diff options
Diffstat (limited to 'target/linux/octeon/files-3.10')
8 files changed, 7608 insertions, 0 deletions
diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Kconfig b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Kconfig new file mode 100644 index 0000000000..018af6db08 --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Kconfig @@ -0,0 +1,10 @@ +config OCTEON_USB + tristate "Cavium Networks Octeon USB support" + depends on CPU_CAVIUM_OCTEON && USB + help + This driver supports USB host controller on some Cavium + Networks' products in the Octeon family. + + To compile this driver as a module, choose M here. The module + will be called octeon-usb. + diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Makefile b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Makefile new file mode 100644 index 0000000000..89df1ad8be --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/Makefile @@ -0,0 +1,3 @@ +obj-${CONFIG_OCTEON_USB} := octeon-usb.o +octeon-usb-y := octeon-hcd.o +octeon-usb-y += cvmx-usb.o diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/TODO b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/TODO new file mode 100644 index 0000000000..cc58a7e88b --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/TODO @@ -0,0 +1,11 @@ +This driver is functional and has been tested on EdgeRouter Lite with +USB mass storage. + +TODO: + - kernel coding style + - checkpatch warnings + - dead code elimination + - device tree bindings + - possibly eliminate the extra "hardware abstraction layer" + +Contact: Aaro Koskinen <aaro.koskinen@iki.fi> diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.c b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.c new file mode 100644 index 0000000000..bf366495fd --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.c @@ -0,0 +1,3229 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This Software, including technical data, may be subject to U.S. export control + * laws, including the U.S. Export Administration Act and its associated + * regulations, and may be subject to export or import regulations in other + * countries. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR + * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO + * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR + * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM + * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, + * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF + * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR + * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR + * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + ***********************license end**************************************/ + + +/** + * @file + * + * "cvmx-usb.c" defines a set of low level USB functions to help + * developers create Octeon USB drivers for various operating + * systems. These functions provide a generic API to the Octeon + * USB blocks, hiding the internal hardware specific + * operations. + * + * <hr>$Revision: 32636 $<hr> + */ +#include <linux/delay.h> +#include <asm/octeon/cvmx.h> +#include <asm/octeon/octeon.h> +#include <asm/octeon/cvmx-sysinfo.h> +#include "cvmx-usbnx-defs.h" +#include "cvmx-usbcx-defs.h" +#include "cvmx-usb.h" +#include <asm/octeon/cvmx-helper.h> +#include <asm/octeon/cvmx-helper-board.h> + +#define CVMX_PREFETCH0(address) CVMX_PREFETCH(address, 0) +#define CVMX_PREFETCH128(address) CVMX_PREFETCH(address, 128) +// a normal prefetch +#define CVMX_PREFETCH(address, offset) CVMX_PREFETCH_PREF0(address, offset) +// normal prefetches that use the pref instruction +#define CVMX_PREFETCH_PREFX(X, address, offset) asm volatile ("pref %[type], %[off](%[rbase])" : : [rbase] "d" (address), [off] "I" (offset), [type] "n" (X)) +#define CVMX_PREFETCH_PREF0(address, offset) CVMX_PREFETCH_PREFX(0, address, offset) +#define CVMX_CLZ(result, input) asm ("clz %[rd],%[rs]" : [rd] "=d" (result) : [rs] "d" (input)) + +#define cvmx_likely likely +#define cvmx_wait_usec udelay +#define cvmx_unlikely unlikely +#define cvmx_le16_to_cpu le16_to_cpu + +#define MAX_RETRIES 3 /* Maximum number of times to retry failed transactions */ +#define MAX_PIPES 32 /* Maximum number of pipes that can be open at once */ +#define MAX_TRANSACTIONS 256 /* Maximum number of outstanding transactions across all pipes */ +#define MAX_CHANNELS 8 /* Maximum number of hardware channels supported by the USB block */ +#define MAX_USB_ADDRESS 127 /* The highest valid USB device address */ +#define MAX_USB_ENDPOINT 15 /* The highest valid USB endpoint number */ +#define MAX_USB_HUB_PORT 15 /* The highest valid port number on a hub */ +#define MAX_TRANSFER_BYTES ((1<<19)-1) /* The low level hardware can transfer a maximum of this number of bytes in each transfer. The field is 19 bits wide */ +#define MAX_TRANSFER_PACKETS ((1<<10)-1) /* The low level hardware can transfer a maximum of this number of packets in each transfer. The field is 10 bits wide */ + +/* These defines disable the normal read and write csr. This is so I can add + extra debug stuff to the usb specific version and I won't use the normal + version by mistake */ +#define cvmx_read_csr use_cvmx_usb_read_csr64_instead_of_cvmx_read_csr +#define cvmx_write_csr use_cvmx_usb_write_csr64_instead_of_cvmx_write_csr + +typedef enum { + __CVMX_USB_TRANSACTION_FLAGS_IN_USE = 1<<16, +} cvmx_usb_transaction_flags_t; + +enum { + USB_CLOCK_TYPE_REF_12, + USB_CLOCK_TYPE_REF_24, + USB_CLOCK_TYPE_REF_48, + USB_CLOCK_TYPE_CRYSTAL_12, +}; + +/** + * Logical transactions may take numerous low level + * transactions, especially when splits are concerned. This + * enum represents all of the possible stages a transaction can + * be in. Note that split completes are always even. This is so + * the NAK handler can backup to the previous low level + * transaction with a simple clearing of bit 0. + */ +typedef enum { + CVMX_USB_STAGE_NON_CONTROL, + CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE, + CVMX_USB_STAGE_SETUP, + CVMX_USB_STAGE_SETUP_SPLIT_COMPLETE, + CVMX_USB_STAGE_DATA, + CVMX_USB_STAGE_DATA_SPLIT_COMPLETE, + CVMX_USB_STAGE_STATUS, + CVMX_USB_STAGE_STATUS_SPLIT_COMPLETE, +} cvmx_usb_stage_t; + +/** + * This structure describes each pending USB transaction + * regardless of type. These are linked together to form a list + * of pending requests for a pipe. + */ +typedef struct cvmx_usb_transaction { + struct cvmx_usb_transaction *prev; /**< Transaction before this one in the pipe */ + struct cvmx_usb_transaction *next; /**< Transaction after this one in the pipe */ + cvmx_usb_transfer_t type; /**< Type of transaction, duplicated of the pipe */ + cvmx_usb_transaction_flags_t flags; /**< State flags for this transaction */ + uint64_t buffer; /**< User's physical buffer address to read/write */ + int buffer_length; /**< Size of the user's buffer in bytes */ + uint64_t control_header; /**< For control transactions, physical address of the 8 byte standard header */ + int iso_start_frame; /**< For ISO transactions, the starting frame number */ + int iso_number_packets; /**< For ISO transactions, the number of packets in the request */ + cvmx_usb_iso_packet_t *iso_packets; /**< For ISO transactions, the sub packets in the request */ + int xfersize; + int pktcnt; + int retries; + int actual_bytes; /**< Actual bytes transfer for this transaction */ + cvmx_usb_stage_t stage; /**< For control transactions, the current stage */ + cvmx_usb_callback_func_t callback; /**< User's callback function when complete */ + void *callback_data; /**< User's data */ +} cvmx_usb_transaction_t; + +/** + * A pipe represents a virtual connection between Octeon and some + * USB device. It contains a list of pending request to the device. + */ +typedef struct cvmx_usb_pipe { + struct cvmx_usb_pipe *prev; /**< Pipe before this one in the list */ + struct cvmx_usb_pipe *next; /**< Pipe after this one in the list */ + cvmx_usb_transaction_t *head; /**< The first pending transaction */ + cvmx_usb_transaction_t *tail; /**< The last pending transaction */ + uint64_t interval; /**< For periodic pipes, the interval between packets in frames */ + uint64_t next_tx_frame; /**< The next frame this pipe is allowed to transmit on */ + cvmx_usb_pipe_flags_t flags; /**< State flags for this pipe */ + cvmx_usb_speed_t device_speed; /**< Speed of device connected to this pipe */ + cvmx_usb_transfer_t transfer_type; /**< Type of transaction supported by this pipe */ + cvmx_usb_direction_t transfer_dir; /**< IN or OUT. Ignored for Control */ + int multi_count; /**< Max packet in a row for the device */ + uint16_t max_packet; /**< The device's maximum packet size in bytes */ + uint8_t device_addr; /**< USB device address at other end of pipe */ + uint8_t endpoint_num; /**< USB endpoint number at other end of pipe */ + uint8_t hub_device_addr; /**< Hub address this device is connected to */ + uint8_t hub_port; /**< Hub port this device is connected to */ + uint8_t pid_toggle; /**< This toggles between 0/1 on every packet send to track the data pid needed */ + uint8_t channel; /**< Hardware DMA channel for this pipe */ + int8_t split_sc_frame; /**< The low order bits of the frame number the split complete should be sent on */ +} cvmx_usb_pipe_t; + +typedef struct { + cvmx_usb_pipe_t *head; /**< Head of the list, or NULL if empty */ + cvmx_usb_pipe_t *tail; /**< Tail if the list, or NULL if empty */ +} cvmx_usb_pipe_list_t; + +typedef struct { + struct { + int channel; + int size; + uint64_t address; + } entry[MAX_CHANNELS+1]; + int head; + int tail; +} cvmx_usb_tx_fifo_t; + +/** + * The state of the USB block is stored in this structure + */ +typedef struct { + int init_flags; /**< Flags passed to initialize */ + int index; /**< Which USB block this is for */ + int idle_hardware_channels; /**< Bit set for every idle hardware channel */ + cvmx_usbcx_hprt_t usbcx_hprt; /**< Stored port status so we don't need to read a CSR to determine splits */ + cvmx_usb_pipe_t *pipe_for_channel[MAX_CHANNELS]; /**< Map channels to pipes */ + cvmx_usb_transaction_t *free_transaction_head; /**< List of free transactions head */ + cvmx_usb_transaction_t *free_transaction_tail; /**< List of free transactions tail */ + cvmx_usb_pipe_t pipe[MAX_PIPES]; /**< Storage for pipes */ + cvmx_usb_transaction_t transaction[MAX_TRANSACTIONS]; /**< Storage for transactions */ + cvmx_usb_callback_func_t callback[__CVMX_USB_CALLBACK_END]; /**< User global callbacks */ + void *callback_data[__CVMX_USB_CALLBACK_END]; /**< User data for each callback */ + int indent; /**< Used by debug output to indent functions */ + cvmx_usb_port_status_t port_status; /**< Last port status used for change notification */ + cvmx_usb_pipe_list_t free_pipes; /**< List of all pipes that are currently closed */ + cvmx_usb_pipe_list_t idle_pipes; /**< List of open pipes that have no transactions */ + cvmx_usb_pipe_list_t active_pipes[4]; /**< Active pipes indexed by transfer type */ + uint64_t frame_number; /**< Increments every SOF interrupt for time keeping */ + cvmx_usb_transaction_t *active_split; /**< Points to the current active split, or NULL */ + cvmx_usb_tx_fifo_t periodic; + cvmx_usb_tx_fifo_t nonperiodic; +} cvmx_usb_internal_state_t; + +/* This macro logs out whenever a function is called if debugging is on */ +#define CVMX_USB_LOG_CALLED() \ + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS)) \ + cvmx_dprintf("%*s%s: called\n", 2*usb->indent++, "", __FUNCTION__); + +/* This macro logs out each function parameter if debugging is on */ +#define CVMX_USB_LOG_PARAM(format, param) \ + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS)) \ + cvmx_dprintf("%*s%s: param %s = " format "\n", 2*usb->indent, "", __FUNCTION__, #param, param); + +/* This macro logs out when a function returns a value */ +#define CVMX_USB_RETURN(v) \ + do { \ + typeof(v) r = v; \ + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS)) \ + cvmx_dprintf("%*s%s: returned %s(%d)\n", 2*--usb->indent, "", __FUNCTION__, #v, r); \ + return r; \ + } while (0); + +/* This macro logs out when a function doesn't return a value */ +#define CVMX_USB_RETURN_NOTHING() \ + do { \ + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS)) \ + cvmx_dprintf("%*s%s: returned\n", 2*--usb->indent, "", __FUNCTION__); \ + return; \ + } while (0); + +/* This macro spins on a field waiting for it to reach a value */ +#define CVMX_WAIT_FOR_FIELD32(address, type, field, op, value, timeout_usec)\ + ({int result; \ + do { \ + uint64_t done = cvmx_get_cycle() + (uint64_t)timeout_usec * \ + octeon_get_clock_rate() / 1000000; \ + type c; \ + while (1) \ + { \ + c.u32 = __cvmx_usb_read_csr32(usb, address); \ + if (c.s.field op (value)) { \ + result = 0; \ + break; \ + } else if (cvmx_get_cycle() > done) { \ + result = -1; \ + break; \ + } else \ + cvmx_wait(100); \ + } \ + } while (0); \ + result;}) + +/* This macro logically sets a single field in a CSR. It does the sequence + read, modify, and write */ +#define USB_SET_FIELD32(address, type, field, value)\ + do { \ + type c; \ + c.u32 = __cvmx_usb_read_csr32(usb, address);\ + c.s.field = value; \ + __cvmx_usb_write_csr32(usb, address, c.u32);\ + } while (0) + +/* Returns the IO address to push/pop stuff data from the FIFOs */ +#define USB_FIFO_ADDRESS(channel, usb_index) (CVMX_USBCX_GOTGCTL(usb_index) + ((channel)+1)*0x1000) + +static int octeon_usb_get_clock_type(void) +{ + switch (cvmx_sysinfo_get()->board_type) { + case CVMX_BOARD_TYPE_BBGW_REF: + case CVMX_BOARD_TYPE_LANAI2_A: + case CVMX_BOARD_TYPE_LANAI2_U: + case CVMX_BOARD_TYPE_LANAI2_G: + return USB_CLOCK_TYPE_CRYSTAL_12; + } + + /* FIXME: This should use CVMX_BOARD_TYPE_UBNT_E100 */ + if (OCTEON_IS_MODEL(OCTEON_CN50XX) && + cvmx_sysinfo_get()->board_type == 20002) + return USB_CLOCK_TYPE_CRYSTAL_12; + + return USB_CLOCK_TYPE_REF_48; +} + +/** + * @INTERNAL + * Read a USB 32bit CSR. It performs the necessary address swizzle + * for 32bit CSRs and logs the value in a readable format if + * debugging is on. + * + * @param usb USB block this access is for + * @param address 64bit address to read + * + * @return Result of the read + */ +static inline uint32_t __cvmx_usb_read_csr32(cvmx_usb_internal_state_t *usb, + uint64_t address) +{ + uint32_t result = cvmx_read64_uint32(address ^ 4); + return result; +} + + +/** + * @INTERNAL + * Write a USB 32bit CSR. It performs the necessary address + * swizzle for 32bit CSRs and logs the value in a readable format + * if debugging is on. + * + * @param usb USB block this access is for + * @param address 64bit address to write + * @param value Value to write + */ +static inline void __cvmx_usb_write_csr32(cvmx_usb_internal_state_t *usb, + uint64_t address, uint32_t value) +{ + cvmx_write64_uint32(address ^ 4, value); + cvmx_read64_uint64(CVMX_USBNX_DMA0_INB_CHN0(usb->index)); +} + + +/** + * @INTERNAL + * Read a USB 64bit CSR. It logs the value in a readable format if + * debugging is on. + * + * @param usb USB block this access is for + * @param address 64bit address to read + * + * @return Result of the read + */ +static inline uint64_t __cvmx_usb_read_csr64(cvmx_usb_internal_state_t *usb, + uint64_t address) +{ + uint64_t result = cvmx_read64_uint64(address); + return result; +} + + +/** + * @INTERNAL + * Write a USB 64bit CSR. It logs the value in a readable format + * if debugging is on. + * + * @param usb USB block this access is for + * @param address 64bit address to write + * @param value Value to write + */ +static inline void __cvmx_usb_write_csr64(cvmx_usb_internal_state_t *usb, + uint64_t address, uint64_t value) +{ + cvmx_write64_uint64(address, value); +} + + +/** + * @INTERNAL + * Utility function to convert complete codes into strings + * + * @param complete_code + * Code to convert + * + * @return Human readable string + */ +static const char *__cvmx_usb_complete_to_string(cvmx_usb_complete_t complete_code) +{ + switch (complete_code) + { + case CVMX_USB_COMPLETE_SUCCESS: return "SUCCESS"; + case CVMX_USB_COMPLETE_SHORT: return "SHORT"; + case CVMX_USB_COMPLETE_CANCEL: return "CANCEL"; + case CVMX_USB_COMPLETE_ERROR: return "ERROR"; + case CVMX_USB_COMPLETE_STALL: return "STALL"; + case CVMX_USB_COMPLETE_XACTERR: return "XACTERR"; + case CVMX_USB_COMPLETE_DATATGLERR: return "DATATGLERR"; + case CVMX_USB_COMPLETE_BABBLEERR: return "BABBLEERR"; + case CVMX_USB_COMPLETE_FRAMEERR: return "FRAMEERR"; + } + return "Update __cvmx_usb_complete_to_string"; +} + + +/** + * @INTERNAL + * Return non zero if this pipe connects to a non HIGH speed + * device through a high speed hub. + * + * @param usb USB block this access is for + * @param pipe Pipe to check + * + * @return Non zero if we need to do split transactions + */ +static inline int __cvmx_usb_pipe_needs_split(cvmx_usb_internal_state_t *usb, cvmx_usb_pipe_t *pipe) +{ + return ((pipe->device_speed != CVMX_USB_SPEED_HIGH) && (usb->usbcx_hprt.s.prtspd == CVMX_USB_SPEED_HIGH)); +} + + +/** + * @INTERNAL + * Trivial utility function to return the correct PID for a pipe + * + * @param pipe pipe to check + * + * @return PID for pipe + */ +static inline int __cvmx_usb_get_data_pid(cvmx_usb_pipe_t *pipe) +{ + if (pipe->pid_toggle) + return 2; /* Data1 */ + else + return 0; /* Data0 */ +} + + +/** + * Return the number of USB ports supported by this Octeon + * chip. If the chip doesn't support USB, or is not supported + * by this API, a zero will be returned. Most Octeon chips + * support one usb port, but some support two ports. + * cvmx_usb_initialize() must be called on independent + * cvmx_usb_state_t structures. + * + * @return Number of port, zero if usb isn't supported + */ +int cvmx_usb_get_num_ports(void) +{ + int arch_ports = 0; + + if (OCTEON_IS_MODEL(OCTEON_CN56XX)) + arch_ports = 1; + else if (OCTEON_IS_MODEL(OCTEON_CN52XX)) + arch_ports = 2; + else if (OCTEON_IS_MODEL(OCTEON_CN50XX)) + arch_ports = 1; + else if (OCTEON_IS_MODEL(OCTEON_CN31XX)) + arch_ports = 1; + else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) + arch_ports = 1; + else + arch_ports = 0; + + return arch_ports; +} + + +/** + * @INTERNAL + * Allocate a usb transaction for use + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * + * @return Transaction or NULL + */ +static inline cvmx_usb_transaction_t *__cvmx_usb_alloc_transaction(cvmx_usb_internal_state_t *usb) +{ + cvmx_usb_transaction_t *t; + t = usb->free_transaction_head; + if (t) { + usb->free_transaction_head = t->next; + if (!usb->free_transaction_head) + usb->free_transaction_tail = NULL; + } + else if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: Failed to allocate a transaction\n", __FUNCTION__); + if (t) { + memset(t, 0, sizeof(*t)); + t->flags = __CVMX_USB_TRANSACTION_FLAGS_IN_USE; + } + return t; +} + + +/** + * @INTERNAL + * Free a usb transaction + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param transaction + * Transaction to free + */ +static inline void __cvmx_usb_free_transaction(cvmx_usb_internal_state_t *usb, + cvmx_usb_transaction_t *transaction) +{ + transaction->flags = 0; + transaction->prev = NULL; + transaction->next = NULL; + if (usb->free_transaction_tail) + usb->free_transaction_tail->next = transaction; + else + usb->free_transaction_head = transaction; + usb->free_transaction_tail = transaction; +} + + +/** + * @INTERNAL + * Add a pipe to the tail of a list + * @param list List to add pipe to + * @param pipe Pipe to add + */ +static inline void __cvmx_usb_append_pipe(cvmx_usb_pipe_list_t *list, cvmx_usb_pipe_t *pipe) +{ + pipe->next = NULL; + pipe->prev = list->tail; + if (list->tail) + list->tail->next = pipe; + else + list->head = pipe; + list->tail = pipe; +} + + +/** + * @INTERNAL + * Remove a pipe from a list + * @param list List to remove pipe from + * @param pipe Pipe to remove + */ +static inline void __cvmx_usb_remove_pipe(cvmx_usb_pipe_list_t *list, cvmx_usb_pipe_t *pipe) +{ + if (list->head == pipe) { + list->head = pipe->next; + pipe->next = NULL; + if (list->head) + list->head->prev = NULL; + else + list->tail = NULL; + } + else if (list->tail == pipe) { + list->tail = pipe->prev; + list->tail->next = NULL; + pipe->prev = NULL; + } + else { + pipe->prev->next = pipe->next; + pipe->next->prev = pipe->prev; + pipe->prev = NULL; + pipe->next = NULL; + } +} + + +/** + * Initialize a USB port for use. This must be called before any + * other access to the Octeon USB port is made. The port starts + * off in the disabled state. + * + * @param state Pointer to an empty cvmx_usb_state_t structure + * that will be populated by the initialize call. + * This structure is then passed to all other USB + * functions. + * @param usb_port_number + * Which Octeon USB port to initialize. + * @param flags Flags to control hardware initialization. See + * cvmx_usb_initialize_flags_t for the flag + * definitions. Some flags are mandatory. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_initialize(cvmx_usb_state_t *state, + int usb_port_number, + cvmx_usb_initialize_flags_t flags) +{ + cvmx_usbnx_clk_ctl_t usbn_clk_ctl; + cvmx_usbnx_usbp_ctl_status_t usbn_usbp_ctl_status; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + usb->init_flags = flags; + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", usb_port_number); + CVMX_USB_LOG_PARAM("0x%x", flags); + + /* Make sure that state is large enough to store the internal state */ + if (sizeof(*state) < sizeof(*usb)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + /* At first allow 0-1 for the usb port number */ + if ((usb_port_number < 0) || (usb_port_number > 1)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + /* For all chips except 52XX there is only one port */ + if (!OCTEON_IS_MODEL(OCTEON_CN52XX) && (usb_port_number > 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + /* Try to determine clock type automatically */ + if ((flags & (CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_XI | + CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_GND)) == 0) { + if (octeon_usb_get_clock_type() == USB_CLOCK_TYPE_CRYSTAL_12) + flags |= CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_XI; /* Only 12 MHZ crystals are supported */ + else + flags |= CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_GND; + } + + if (flags & CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_GND) { + /* Check for auto ref clock frequency */ + if (!(flags & CVMX_USB_INITIALIZE_FLAGS_CLOCK_MHZ_MASK)) + switch (octeon_usb_get_clock_type()) { + case USB_CLOCK_TYPE_REF_12: + flags |= CVMX_USB_INITIALIZE_FLAGS_CLOCK_12MHZ; + break; + case USB_CLOCK_TYPE_REF_24: + flags |= CVMX_USB_INITIALIZE_FLAGS_CLOCK_24MHZ; + break; + case USB_CLOCK_TYPE_REF_48: + flags |= CVMX_USB_INITIALIZE_FLAGS_CLOCK_48MHZ; + break; + default: + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + break; + } + } + + memset(usb, 0, sizeof(usb)); + usb->init_flags = flags; + + /* Initialize the USB state structure */ + { + int i; + usb->index = usb_port_number; + + /* Initialize the transaction double linked list */ + usb->free_transaction_head = NULL; + usb->free_transaction_tail = NULL; + for (i=0; i<MAX_TRANSACTIONS; i++) + __cvmx_usb_free_transaction(usb, usb->transaction + i); + for (i=0; i<MAX_PIPES; i++) + __cvmx_usb_append_pipe(&usb->free_pipes, usb->pipe + i); + } + + /* Power On Reset and PHY Initialization */ + + /* 1. Wait for DCOK to assert (nothing to do) */ + /* 2a. Write USBN0/1_CLK_CTL[POR] = 1 and + USBN0/1_CLK_CTL[HRST,PRST,HCLK_RST] = 0 */ + usbn_clk_ctl.u64 = __cvmx_usb_read_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index)); + usbn_clk_ctl.s.por = 1; + usbn_clk_ctl.s.hrst = 0; + usbn_clk_ctl.s.prst = 0; + usbn_clk_ctl.s.hclk_rst = 0; + usbn_clk_ctl.s.enable = 0; + /* 2b. Select the USB reference clock/crystal parameters by writing + appropriate values to USBN0/1_CLK_CTL[P_C_SEL, P_RTYPE, P_COM_ON] */ + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_GND) { + /* The USB port uses 12/24/48MHz 2.5V board clock + source at USB_XO. USB_XI should be tied to GND. + Most Octeon evaluation boards require this setting */ + if (OCTEON_IS_MODEL(OCTEON_CN3XXX)) { + usbn_clk_ctl.cn31xx.p_rclk = 1; /* From CN31XX,CN30XX manual */ + usbn_clk_ctl.cn31xx.p_xenbn = 0; + } + else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) + usbn_clk_ctl.cn56xx.p_rtype = 2; /* From CN56XX,CN50XX manual */ + else + usbn_clk_ctl.cn52xx.p_rtype = 1; /* From CN52XX manual */ + + switch (flags & CVMX_USB_INITIALIZE_FLAGS_CLOCK_MHZ_MASK) { + case CVMX_USB_INITIALIZE_FLAGS_CLOCK_12MHZ: + usbn_clk_ctl.s.p_c_sel = 0; + break; + case CVMX_USB_INITIALIZE_FLAGS_CLOCK_24MHZ: + usbn_clk_ctl.s.p_c_sel = 1; + break; + case CVMX_USB_INITIALIZE_FLAGS_CLOCK_48MHZ: + usbn_clk_ctl.s.p_c_sel = 2; + break; + } + } + else { + /* The USB port uses a 12MHz crystal as clock source + at USB_XO and USB_XI */ + if (OCTEON_IS_MODEL(OCTEON_CN3XXX)) { + usbn_clk_ctl.cn31xx.p_rclk = 1; /* From CN31XX,CN30XX manual */ + usbn_clk_ctl.cn31xx.p_xenbn = 1; + } + else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) + usbn_clk_ctl.cn56xx.p_rtype = 0; /* From CN56XX,CN50XX manual */ + else + usbn_clk_ctl.cn52xx.p_rtype = 0; /* From CN52XX manual */ + + usbn_clk_ctl.s.p_c_sel = 0; + } + /* 2c. Select the HCLK via writing USBN0/1_CLK_CTL[DIVIDE, DIVIDE2] and + setting USBN0/1_CLK_CTL[ENABLE] = 1. Divide the core clock down such + that USB is as close as possible to 125Mhz */ + { + int divisor = (octeon_get_clock_rate()+125000000-1)/125000000; + if (divisor < 4) /* Lower than 4 doesn't seem to work properly */ + divisor = 4; + usbn_clk_ctl.s.divide = divisor; + usbn_clk_ctl.s.divide2 = 0; + } + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + /* 2d. Write USBN0/1_CLK_CTL[HCLK_RST] = 1 */ + usbn_clk_ctl.s.hclk_rst = 1; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + /* 2e. Wait 64 core-clock cycles for HCLK to stabilize */ + cvmx_wait(64); + /* 3. Program the power-on reset field in the USBN clock-control register: + USBN_CLK_CTL[POR] = 0 */ + usbn_clk_ctl.s.por = 0; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + /* 4. Wait 1 ms for PHY clock to start */ + cvmx_wait_usec(1000); + /* 5. Program the Reset input from automatic test equipment field in the + USBP control and status register: USBN_USBP_CTL_STATUS[ATE_RESET] = 1 */ + usbn_usbp_ctl_status.u64 = __cvmx_usb_read_csr64(usb, CVMX_USBNX_USBP_CTL_STATUS(usb->index)); + usbn_usbp_ctl_status.s.ate_reset = 1; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_USBP_CTL_STATUS(usb->index), + usbn_usbp_ctl_status.u64); + /* 6. Wait 10 cycles */ + cvmx_wait(10); + /* 7. Clear ATE_RESET field in the USBN clock-control register: + USBN_USBP_CTL_STATUS[ATE_RESET] = 0 */ + usbn_usbp_ctl_status.s.ate_reset = 0; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_USBP_CTL_STATUS(usb->index), + usbn_usbp_ctl_status.u64); + /* 8. Program the PHY reset field in the USBN clock-control register: + USBN_CLK_CTL[PRST] = 1 */ + usbn_clk_ctl.s.prst = 1; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + /* 9. Program the USBP control and status register to select host or + device mode. USBN_USBP_CTL_STATUS[HST_MODE] = 0 for host, = 1 for + device */ + usbn_usbp_ctl_status.s.hst_mode = 0; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_USBP_CTL_STATUS(usb->index), + usbn_usbp_ctl_status.u64); + /* 10. Wait 1 us */ + cvmx_wait_usec(1); + /* 11. Program the hreset_n field in the USBN clock-control register: + USBN_CLK_CTL[HRST] = 1 */ + usbn_clk_ctl.s.hrst = 1; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + /* 12. Proceed to USB core initialization */ + usbn_clk_ctl.s.enable = 1; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + cvmx_wait_usec(1); + + /* USB Core Initialization */ + + /* 1. Read USBC_GHWCFG1, USBC_GHWCFG2, USBC_GHWCFG3, USBC_GHWCFG4 to + determine USB core configuration parameters. */ + /* Nothing needed */ + /* 2. Program the following fields in the global AHB configuration + register (USBC_GAHBCFG) + DMA mode, USBC_GAHBCFG[DMAEn]: 1 = DMA mode, 0 = slave mode + Burst length, USBC_GAHBCFG[HBSTLEN] = 0 + Nonperiodic TxFIFO empty level (slave mode only), + USBC_GAHBCFG[NPTXFEMPLVL] + Periodic TxFIFO empty level (slave mode only), + USBC_GAHBCFG[PTXFEMPLVL] + Global interrupt mask, USBC_GAHBCFG[GLBLINTRMSK] = 1 */ + { + cvmx_usbcx_gahbcfg_t usbcx_gahbcfg; + /* Due to an errata, CN31XX doesn't support DMA */ + if (OCTEON_IS_MODEL(OCTEON_CN31XX)) + usb->init_flags |= CVMX_USB_INITIALIZE_FLAGS_NO_DMA; + usbcx_gahbcfg.u32 = 0; + usbcx_gahbcfg.s.dmaen = !(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA); + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) + usb->idle_hardware_channels = 0x1; /* Only use one channel with non DMA */ + else if (OCTEON_IS_MODEL(OCTEON_CN5XXX)) + usb->idle_hardware_channels = 0xf7; /* CN5XXX have an errata with channel 3 */ + else + usb->idle_hardware_channels = 0xff; + usbcx_gahbcfg.s.hbstlen = 0; + usbcx_gahbcfg.s.nptxfemplvl = 1; + usbcx_gahbcfg.s.ptxfemplvl = 1; + usbcx_gahbcfg.s.glblintrmsk = 1; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_GAHBCFG(usb->index), + usbcx_gahbcfg.u32); + } + /* 3. Program the following fields in USBC_GUSBCFG register. + HS/FS timeout calibration, USBC_GUSBCFG[TOUTCAL] = 0 + ULPI DDR select, USBC_GUSBCFG[DDRSEL] = 0 + USB turnaround time, USBC_GUSBCFG[USBTRDTIM] = 0x5 + PHY low-power clock select, USBC_GUSBCFG[PHYLPWRCLKSEL] = 0 */ + { + cvmx_usbcx_gusbcfg_t usbcx_gusbcfg; + usbcx_gusbcfg.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GUSBCFG(usb->index)); + usbcx_gusbcfg.s.toutcal = 0; + usbcx_gusbcfg.s.ddrsel = 0; + usbcx_gusbcfg.s.usbtrdtim = 0x5; + usbcx_gusbcfg.s.phylpwrclksel = 0; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_GUSBCFG(usb->index), + usbcx_gusbcfg.u32); + } + /* 4. The software must unmask the following bits in the USBC_GINTMSK + register. + OTG interrupt mask, USBC_GINTMSK[OTGINTMSK] = 1 + Mode mismatch interrupt mask, USBC_GINTMSK[MODEMISMSK] = 1 */ + { + cvmx_usbcx_gintmsk_t usbcx_gintmsk; + int channel; + + usbcx_gintmsk.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GINTMSK(usb->index)); + usbcx_gintmsk.s.otgintmsk = 1; + usbcx_gintmsk.s.modemismsk = 1; + usbcx_gintmsk.s.hchintmsk = 1; + usbcx_gintmsk.s.sofmsk = 0; + /* We need RX FIFO interrupts if we don't have DMA */ + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) + usbcx_gintmsk.s.rxflvlmsk = 1; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_GINTMSK(usb->index), + usbcx_gintmsk.u32); + + /* Disable all channel interrupts. We'll enable them per channel later */ + for (channel=0; channel<8; channel++) + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCINTMSKX(channel, usb->index), 0); + } + + { + /* Host Port Initialization */ + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: USB%d is in host mode\n", __FUNCTION__, usb->index); + + /* 1. Program the host-port interrupt-mask field to unmask, + USBC_GINTMSK[PRTINT] = 1 */ + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, + prtintmsk, 1); + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, + disconnintmsk, 1); + /* 2. Program the USBC_HCFG register to select full-speed host or + high-speed host. */ + { + cvmx_usbcx_hcfg_t usbcx_hcfg; + usbcx_hcfg.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCFG(usb->index)); + usbcx_hcfg.s.fslssupp = 0; + usbcx_hcfg.s.fslspclksel = 0; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCFG(usb->index), usbcx_hcfg.u32); + } + /* 3. Program the port power bit to drive VBUS on the USB, + USBC_HPRT[PRTPWR] = 1 */ + USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), cvmx_usbcx_hprt_t, prtpwr, 1); + + /* Steps 4-15 from the manual are done later in the port enable */ + } + + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Shutdown a USB port after a call to cvmx_usb_initialize(). + * The port should be disabled with all pipes closed when this + * function is called. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_shutdown(cvmx_usb_state_t *state) +{ + cvmx_usbnx_clk_ctl_t usbn_clk_ctl; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + /* Make sure all pipes are closed */ + if (usb->idle_pipes.head || + usb->active_pipes[CVMX_USB_TRANSFER_ISOCHRONOUS].head || + usb->active_pipes[CVMX_USB_TRANSFER_INTERRUPT].head || + usb->active_pipes[CVMX_USB_TRANSFER_CONTROL].head || + usb->active_pipes[CVMX_USB_TRANSFER_BULK].head) + CVMX_USB_RETURN(CVMX_USB_BUSY); + + /* Disable the clocks and put them in power on reset */ + usbn_clk_ctl.u64 = __cvmx_usb_read_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index)); + usbn_clk_ctl.s.enable = 1; + usbn_clk_ctl.s.por = 1; + usbn_clk_ctl.s.hclk_rst = 1; + usbn_clk_ctl.s.prst = 0; + usbn_clk_ctl.s.hrst = 0; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_CLK_CTL(usb->index), + usbn_clk_ctl.u64); + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Enable a USB port. After this call succeeds, the USB port is + * online and servicing requests. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_enable(cvmx_usb_state_t *state) +{ + cvmx_usbcx_ghwcfg3_t usbcx_ghwcfg3; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + usb->usbcx_hprt.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPRT(usb->index)); + + /* If the port is already enabled the just return. We don't need to do + anything */ + if (usb->usbcx_hprt.s.prtena) + CVMX_USB_RETURN(CVMX_USB_SUCCESS); + + /* If there is nothing plugged into the port then fail immediately */ + if (!usb->usbcx_hprt.s.prtconnsts) { + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: USB%d Nothing plugged into the port\n", __FUNCTION__, usb->index); + CVMX_USB_RETURN(CVMX_USB_TIMEOUT); + } + + /* Program the port reset bit to start the reset process */ + USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), cvmx_usbcx_hprt_t, prtrst, 1); + + /* Wait at least 50ms (high speed), or 10ms (full speed) for the reset + process to complete. */ + cvmx_wait_usec(50000); + + /* Program the port reset bit to 0, USBC_HPRT[PRTRST] = 0 */ + USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), cvmx_usbcx_hprt_t, prtrst, 0); + + /* Wait for the USBC_HPRT[PRTENA]. */ + if (CVMX_WAIT_FOR_FIELD32(CVMX_USBCX_HPRT(usb->index), cvmx_usbcx_hprt_t, + prtena, ==, 1, 100000)) { + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: Timeout waiting for the port to finish reset\n", + __FUNCTION__); + CVMX_USB_RETURN(CVMX_USB_TIMEOUT); + } + + /* Read the port speed field to get the enumerated speed, USBC_HPRT[PRTSPD]. */ + usb->usbcx_hprt.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPRT(usb->index)); + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: USB%d is in %s speed mode\n", __FUNCTION__, usb->index, + (usb->usbcx_hprt.s.prtspd == CVMX_USB_SPEED_HIGH) ? "high" : + (usb->usbcx_hprt.s.prtspd == CVMX_USB_SPEED_FULL) ? "full" : + "low"); + + usbcx_ghwcfg3.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GHWCFG3(usb->index)); + + /* 13. Program the USBC_GRXFSIZ register to select the size of the receive + FIFO (25%). */ + USB_SET_FIELD32(CVMX_USBCX_GRXFSIZ(usb->index), cvmx_usbcx_grxfsiz_t, + rxfdep, usbcx_ghwcfg3.s.dfifodepth / 4); + /* 14. Program the USBC_GNPTXFSIZ register to select the size and the + start address of the non- periodic transmit FIFO for nonperiodic + transactions (50%). */ + { + cvmx_usbcx_gnptxfsiz_t siz; + siz.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GNPTXFSIZ(usb->index)); + siz.s.nptxfdep = usbcx_ghwcfg3.s.dfifodepth / 2; + siz.s.nptxfstaddr = usbcx_ghwcfg3.s.dfifodepth / 4; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_GNPTXFSIZ(usb->index), siz.u32); + } + /* 15. Program the USBC_HPTXFSIZ register to select the size and start + address of the periodic transmit FIFO for periodic transactions (25%). */ + { + cvmx_usbcx_hptxfsiz_t siz; + siz.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPTXFSIZ(usb->index)); + siz.s.ptxfsize = usbcx_ghwcfg3.s.dfifodepth / 4; + siz.s.ptxfstaddr = 3 * usbcx_ghwcfg3.s.dfifodepth / 4; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HPTXFSIZ(usb->index), siz.u32); + } + /* Flush all FIFOs */ + USB_SET_FIELD32(CVMX_USBCX_GRSTCTL(usb->index), cvmx_usbcx_grstctl_t, txfnum, 0x10); + USB_SET_FIELD32(CVMX_USBCX_GRSTCTL(usb->index), cvmx_usbcx_grstctl_t, txfflsh, 1); + CVMX_WAIT_FOR_FIELD32(CVMX_USBCX_GRSTCTL(usb->index), cvmx_usbcx_grstctl_t, + txfflsh, ==, 0, 100); + USB_SET_FIELD32(CVMX_USBCX_GRSTCTL(usb->index), cvmx_usbcx_grstctl_t, rxfflsh, 1); + CVMX_WAIT_FOR_FIELD32(CVMX_USBCX_GRSTCTL(usb->index), cvmx_usbcx_grstctl_t, + rxfflsh, ==, 0, 100); + + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Disable a USB port. After this call the USB port will not + * generate data transfers and will not generate events. + * Transactions in process will fail and call their + * associated callbacks. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_disable(cvmx_usb_state_t *state) +{ + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + /* Disable the port */ + USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index), cvmx_usbcx_hprt_t, prtena, 1); + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Get the current state of the USB port. Use this call to + * determine if the usb port has anything connected, is enabled, + * or has some sort of error condition. The return value of this + * call has "changed" bits to signal of the value of some fields + * have changed between calls. These "changed" fields are based + * on the last call to cvmx_usb_set_status(). In order to clear + * them, you must update the status through cvmx_usb_set_status(). + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return Port status information + */ +cvmx_usb_port_status_t cvmx_usb_get_status(cvmx_usb_state_t *state) +{ + cvmx_usbcx_hprt_t usbc_hprt; + cvmx_usb_port_status_t result; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + memset(&result, 0, sizeof(result)); + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + usbc_hprt.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPRT(usb->index)); + result.port_enabled = usbc_hprt.s.prtena; + result.port_over_current = usbc_hprt.s.prtovrcurract; + result.port_powered = usbc_hprt.s.prtpwr; + result.port_speed = usbc_hprt.s.prtspd; + result.connected = usbc_hprt.s.prtconnsts; + result.connect_change = (result.connected != usb->port_status.connected); + + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS)) + cvmx_dprintf("%*s%s: returned port enabled=%d, over_current=%d, powered=%d, speed=%d, connected=%d, connect_change=%d\n", + 2*(--usb->indent), "", __FUNCTION__, + result.port_enabled, + result.port_over_current, + result.port_powered, + result.port_speed, + result.connected, + result.connect_change); + return result; +} + + +/** + * Set the current state of the USB port. The status is used as + * a reference for the "changed" bits returned by + * cvmx_usb_get_status(). Other than serving as a reference, the + * status passed to this function is not used. No fields can be + * changed through this call. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param port_status + * Port status to set, most like returned by cvmx_usb_get_status() + */ +void cvmx_usb_set_status(cvmx_usb_state_t *state, cvmx_usb_port_status_t port_status) +{ + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + usb->port_status = port_status; + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Convert a USB transaction into a handle + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param transaction + * Transaction to get handle for + * + * @return Handle + */ +static inline int __cvmx_usb_get_submit_handle(cvmx_usb_internal_state_t *usb, + cvmx_usb_transaction_t *transaction) +{ + return ((unsigned long)transaction - (unsigned long)usb->transaction) / + sizeof(*transaction); +} + + +/** + * @INTERNAL + * Convert a USB pipe into a handle + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param pipe Pipe to get handle for + * + * @return Handle + */ +static inline int __cvmx_usb_get_pipe_handle(cvmx_usb_internal_state_t *usb, + cvmx_usb_pipe_t *pipe) +{ + return ((unsigned long)pipe - (unsigned long)usb->pipe) / sizeof(*pipe); +} + + +/** + * Open a virtual pipe between the host and a USB device. A pipe + * must be opened before data can be transferred between a device + * and Octeon. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param flags Optional pipe flags defined in + * cvmx_usb_pipe_flags_t. + * @param device_addr + * USB device address to open the pipe to + * (0-127). + * @param endpoint_num + * USB endpoint number to open the pipe to + * (0-15). + * @param device_speed + * The speed of the device the pipe is going + * to. This must match the device's speed, + * which may be different than the port speed. + * @param max_packet The maximum packet length the device can + * transmit/receive (low speed=0-8, full + * speed=0-1023, high speed=0-1024). This value + * comes from the standard endpoint descriptor + * field wMaxPacketSize bits <10:0>. + * @param transfer_type + * The type of transfer this pipe is for. + * @param transfer_dir + * The direction the pipe is in. This is not + * used for control pipes. + * @param interval For ISOCHRONOUS and INTERRUPT transfers, + * this is how often the transfer is scheduled + * for. All other transfers should specify + * zero. The units are in frames (8000/sec at + * high speed, 1000/sec for full speed). + * @param multi_count + * For high speed devices, this is the maximum + * allowed number of packet per microframe. + * Specify zero for non high speed devices. This + * value comes from the standard endpoint descriptor + * field wMaxPacketSize bits <12:11>. + * @param hub_device_addr + * Hub device address this device is connected + * to. Devices connected directly to Octeon + * use zero. This is only used when the device + * is full/low speed behind a high speed hub. + * The address will be of the high speed hub, + * not and full speed hubs after it. + * @param hub_port Which port on the hub the device is + * connected. Use zero for devices connected + * directly to Octeon. Like hub_device_addr, + * this is only used for full/low speed + * devices behind a high speed hub. + * + * @return A non negative value is a pipe handle. Negative + * values are failure codes from cvmx_usb_status_t. + */ +int cvmx_usb_open_pipe(cvmx_usb_state_t *state, cvmx_usb_pipe_flags_t flags, + int device_addr, int endpoint_num, + cvmx_usb_speed_t device_speed, int max_packet, + cvmx_usb_transfer_t transfer_type, + cvmx_usb_direction_t transfer_dir, int interval, + int multi_count, int hub_device_addr, int hub_port) +{ + cvmx_usb_pipe_t *pipe; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("0x%x", flags); + CVMX_USB_LOG_PARAM("%d", device_addr); + CVMX_USB_LOG_PARAM("%d", endpoint_num); + CVMX_USB_LOG_PARAM("%d", device_speed); + CVMX_USB_LOG_PARAM("%d", max_packet); + CVMX_USB_LOG_PARAM("%d", transfer_type); + CVMX_USB_LOG_PARAM("%d", transfer_dir); + CVMX_USB_LOG_PARAM("%d", interval); + CVMX_USB_LOG_PARAM("%d", multi_count); + CVMX_USB_LOG_PARAM("%d", hub_device_addr); + CVMX_USB_LOG_PARAM("%d", hub_port); + + if (cvmx_unlikely((device_addr < 0) || (device_addr > MAX_USB_ADDRESS))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((endpoint_num < 0) || (endpoint_num > MAX_USB_ENDPOINT))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(device_speed > CVMX_USB_SPEED_LOW)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((max_packet <= 0) || (max_packet > 1024))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(transfer_type > CVMX_USB_TRANSFER_INTERRUPT)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((transfer_dir != CVMX_USB_DIRECTION_OUT) && + (transfer_dir != CVMX_USB_DIRECTION_IN))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(interval < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((transfer_type == CVMX_USB_TRANSFER_CONTROL) && interval)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(multi_count < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((device_speed != CVMX_USB_SPEED_HIGH) && + (multi_count != 0))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((hub_device_addr < 0) || (hub_device_addr > MAX_USB_ADDRESS))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((hub_port < 0) || (hub_port > MAX_USB_HUB_PORT))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Find a free pipe */ + pipe = usb->free_pipes.head; + if (!pipe) + CVMX_USB_RETURN(CVMX_USB_NO_MEMORY); + __cvmx_usb_remove_pipe(&usb->free_pipes, pipe); + pipe->flags = flags | __CVMX_USB_PIPE_FLAGS_OPEN; + if ((device_speed == CVMX_USB_SPEED_HIGH) && + (transfer_dir == CVMX_USB_DIRECTION_OUT) && + (transfer_type == CVMX_USB_TRANSFER_BULK)) + pipe->flags |= __CVMX_USB_PIPE_FLAGS_NEED_PING; + pipe->device_addr = device_addr; + pipe->endpoint_num = endpoint_num; + pipe->device_speed = device_speed; + pipe->max_packet = max_packet; + pipe->transfer_type = transfer_type; + pipe->transfer_dir = transfer_dir; + /* All pipes use interval to rate limit NAK processing. Force an interval + if one wasn't supplied */ + if (!interval) + interval = 1; + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + pipe->interval = interval*8; + /* Force start splits to be schedule on uFrame 0 */ + pipe->next_tx_frame = ((usb->frame_number+7)&~7) + pipe->interval; + } + else { + pipe->interval = interval; + pipe->next_tx_frame = usb->frame_number + pipe->interval; + } + pipe->multi_count = multi_count; + pipe->hub_device_addr = hub_device_addr; + pipe->hub_port = hub_port; + pipe->pid_toggle = 0; + pipe->split_sc_frame = -1; + __cvmx_usb_append_pipe(&usb->idle_pipes, pipe); + + /* We don't need to tell the hardware about this pipe yet since + it doesn't have any submitted requests */ + + CVMX_USB_RETURN(__cvmx_usb_get_pipe_handle(usb, pipe)); +} + + +/** + * @INTERNAL + * Poll the RX FIFOs and remove data as needed. This function is only used + * in non DMA mode. It is very important that this function be called quickly + * enough to prevent FIFO overflow. + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + */ +static void __cvmx_usb_poll_rx_fifo(cvmx_usb_internal_state_t *usb) +{ + cvmx_usbcx_grxstsph_t rx_status; + int channel; + int bytes; + uint64_t address; + uint32_t *ptr; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + + rx_status.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GRXSTSPH(usb->index)); + /* Only read data if IN data is there */ + if (rx_status.s.pktsts != 2) + CVMX_USB_RETURN_NOTHING(); + /* Check if no data is available */ + if (!rx_status.s.bcnt) + CVMX_USB_RETURN_NOTHING(); + + channel = rx_status.s.chnum; + bytes = rx_status.s.bcnt; + if (!bytes) + CVMX_USB_RETURN_NOTHING(); + + /* Get where the DMA engine would have written this data */ + address = __cvmx_usb_read_csr64(usb, CVMX_USBNX_DMA0_INB_CHN0(usb->index) + channel*8); + ptr = cvmx_phys_to_ptr(address); + __cvmx_usb_write_csr64(usb, CVMX_USBNX_DMA0_INB_CHN0(usb->index) + channel*8, address + bytes); + + /* Loop writing the FIFO data for this packet into memory */ + while (bytes > 0) { + *ptr++ = __cvmx_usb_read_csr32(usb, USB_FIFO_ADDRESS(channel, usb->index)); + bytes -= 4; + } + CVMX_SYNCW; + + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * Fill the TX hardware fifo with data out of the software + * fifos + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param fifo Software fifo to use + * @param available Amount of space in the hardware fifo + * + * @return Non zero if the hardware fifo was too small and needs + * to be serviced again. + */ +static int __cvmx_usb_fill_tx_hw(cvmx_usb_internal_state_t *usb, cvmx_usb_tx_fifo_t *fifo, int available) +{ + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%p", fifo); + CVMX_USB_LOG_PARAM("%d", available); + + /* We're done either when there isn't anymore space or the software FIFO + is empty */ + while (available && (fifo->head != fifo->tail)) { + int i = fifo->tail; + const uint32_t *ptr = cvmx_phys_to_ptr(fifo->entry[i].address); + uint64_t csr_address = USB_FIFO_ADDRESS(fifo->entry[i].channel, usb->index) ^ 4; + int words = available; + + /* Limit the amount of data to waht the SW fifo has */ + if (fifo->entry[i].size <= available) { + words = fifo->entry[i].size; + fifo->tail++; + if (fifo->tail > MAX_CHANNELS) + fifo->tail = 0; + } + + /* Update the next locations and counts */ + available -= words; + fifo->entry[i].address += words * 4; + fifo->entry[i].size -= words; + + /* Write the HW fifo data. The read every three writes is due + to an errata on CN3XXX chips */ + while (words > 3) { + cvmx_write64_uint32(csr_address, *ptr++); + cvmx_write64_uint32(csr_address, *ptr++); + cvmx_write64_uint32(csr_address, *ptr++); + cvmx_read64_uint64(CVMX_USBNX_DMA0_INB_CHN0(usb->index)); + words -= 3; + } + cvmx_write64_uint32(csr_address, *ptr++); + if (--words) { + cvmx_write64_uint32(csr_address, *ptr++); + if (--words) + cvmx_write64_uint32(csr_address, *ptr++); + } + cvmx_read64_uint64(CVMX_USBNX_DMA0_INB_CHN0(usb->index)); + } + CVMX_USB_RETURN(fifo->head != fifo->tail); +} + + +/** + * Check the hardware FIFOs and fill them as needed + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + */ +static void __cvmx_usb_poll_tx_fifo(cvmx_usb_internal_state_t *usb) +{ + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + + if (usb->periodic.head != usb->periodic.tail) { + cvmx_usbcx_hptxsts_t tx_status; + tx_status.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPTXSTS(usb->index)); + if (__cvmx_usb_fill_tx_hw(usb, &usb->periodic, tx_status.s.ptxfspcavail)) + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, ptxfempmsk, 1); + else + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, ptxfempmsk, 0); + } + + if (usb->nonperiodic.head != usb->nonperiodic.tail) { + cvmx_usbcx_gnptxsts_t tx_status; + tx_status.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GNPTXSTS(usb->index)); + if (__cvmx_usb_fill_tx_hw(usb, &usb->nonperiodic, tx_status.s.nptxfspcavail)) + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, nptxfempmsk, 1); + else + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, nptxfempmsk, 0); + } + + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Fill the TX FIFO with an outgoing packet + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param channel Channel number to get packet from + */ +static void __cvmx_usb_fill_tx_fifo(cvmx_usb_internal_state_t *usb, int channel) +{ + cvmx_usbcx_hccharx_t hcchar; + cvmx_usbcx_hcspltx_t usbc_hcsplt; + cvmx_usbcx_hctsizx_t usbc_hctsiz; + cvmx_usb_tx_fifo_t *fifo; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%d", channel); + + /* We only need to fill data on outbound channels */ + hcchar.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index)); + if (hcchar.s.epdir != CVMX_USB_DIRECTION_OUT) + CVMX_USB_RETURN_NOTHING(); + + /* OUT Splits only have data on the start and not the complete */ + usbc_hcsplt.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCSPLTX(channel, usb->index)); + if (usbc_hcsplt.s.spltena && usbc_hcsplt.s.compsplt) + CVMX_USB_RETURN_NOTHING(); + + /* Find out how many bytes we need to fill and convert it into 32bit words */ + usbc_hctsiz.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index)); + if (!usbc_hctsiz.s.xfersize) + CVMX_USB_RETURN_NOTHING(); + + if ((hcchar.s.eptype == CVMX_USB_TRANSFER_INTERRUPT) || + (hcchar.s.eptype == CVMX_USB_TRANSFER_ISOCHRONOUS)) + fifo = &usb->periodic; + else + fifo = &usb->nonperiodic; + + fifo->entry[fifo->head].channel = channel; + fifo->entry[fifo->head].address = __cvmx_usb_read_csr64(usb, CVMX_USBNX_DMA0_OUTB_CHN0(usb->index) + channel*8); + fifo->entry[fifo->head].size = (usbc_hctsiz.s.xfersize+3)>>2; + fifo->head++; + if (fifo->head > MAX_CHANNELS) + fifo->head = 0; + + __cvmx_usb_poll_tx_fifo(usb); + + CVMX_USB_RETURN_NOTHING(); +} + +/** + * @INTERNAL + * Perform channel specific setup for Control transactions. All + * the generic stuff will already have been done in + * __cvmx_usb_start_channel() + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param channel Channel to setup + * @param pipe Pipe for control transaction + */ +static void __cvmx_usb_start_channel_control(cvmx_usb_internal_state_t *usb, + int channel, + cvmx_usb_pipe_t *pipe) +{ + cvmx_usb_transaction_t *transaction = pipe->head; + cvmx_usb_control_header_t *header = cvmx_phys_to_ptr(transaction->control_header); + int bytes_to_transfer = transaction->buffer_length - transaction->actual_bytes; + int packets_to_transfer; + cvmx_usbcx_hctsizx_t usbc_hctsiz; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%d", channel); + CVMX_USB_LOG_PARAM("%p", pipe); + + usbc_hctsiz.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index)); + + switch (transaction->stage) { + case CVMX_USB_STAGE_NON_CONTROL: + case CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE: + cvmx_dprintf("%s: ERROR - Non control stage\n", __FUNCTION__); + break; + case CVMX_USB_STAGE_SETUP: + usbc_hctsiz.s.pid = 3; /* Setup */ + bytes_to_transfer = sizeof(*header); + /* All Control operations start with a setup going OUT */ + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), cvmx_usbcx_hccharx_t, epdir, CVMX_USB_DIRECTION_OUT); + /* Setup send the control header instead of the buffer data. The + buffer data will be used in the next stage */ + __cvmx_usb_write_csr64(usb, CVMX_USBNX_DMA0_OUTB_CHN0(usb->index) + channel*8, transaction->control_header); + break; + case CVMX_USB_STAGE_SETUP_SPLIT_COMPLETE: + usbc_hctsiz.s.pid = 3; /* Setup */ + bytes_to_transfer = 0; + /* All Control operations start with a setup going OUT */ + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), cvmx_usbcx_hccharx_t, epdir, CVMX_USB_DIRECTION_OUT); + USB_SET_FIELD32(CVMX_USBCX_HCSPLTX(channel, usb->index), cvmx_usbcx_hcspltx_t, compsplt, 1); + break; + case CVMX_USB_STAGE_DATA: + usbc_hctsiz.s.pid = __cvmx_usb_get_data_pid(pipe); + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + if (header->s.request_type & 0x80) + bytes_to_transfer = 0; + else if (bytes_to_transfer > pipe->max_packet) + bytes_to_transfer = pipe->max_packet; + } + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), + cvmx_usbcx_hccharx_t, epdir, + ((header->s.request_type & 0x80) ? + CVMX_USB_DIRECTION_IN : + CVMX_USB_DIRECTION_OUT)); + break; + case CVMX_USB_STAGE_DATA_SPLIT_COMPLETE: + usbc_hctsiz.s.pid = __cvmx_usb_get_data_pid(pipe); + if (!(header->s.request_type & 0x80)) + bytes_to_transfer = 0; + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), + cvmx_usbcx_hccharx_t, epdir, + ((header->s.request_type & 0x80) ? + CVMX_USB_DIRECTION_IN : + CVMX_USB_DIRECTION_OUT)); + USB_SET_FIELD32(CVMX_USBCX_HCSPLTX(channel, usb->index), cvmx_usbcx_hcspltx_t, compsplt, 1); + break; + case CVMX_USB_STAGE_STATUS: + usbc_hctsiz.s.pid = __cvmx_usb_get_data_pid(pipe); + bytes_to_transfer = 0; + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), cvmx_usbcx_hccharx_t, epdir, + ((header->s.request_type & 0x80) ? + CVMX_USB_DIRECTION_OUT : + CVMX_USB_DIRECTION_IN)); + break; + case CVMX_USB_STAGE_STATUS_SPLIT_COMPLETE: + usbc_hctsiz.s.pid = __cvmx_usb_get_data_pid(pipe); + bytes_to_transfer = 0; + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), cvmx_usbcx_hccharx_t, epdir, + ((header->s.request_type & 0x80) ? + CVMX_USB_DIRECTION_OUT : + CVMX_USB_DIRECTION_IN)); + USB_SET_FIELD32(CVMX_USBCX_HCSPLTX(channel, usb->index), cvmx_usbcx_hcspltx_t, compsplt, 1); + break; + } + + /* Make sure the transfer never exceeds the byte limit of the hardware. + Further bytes will be sent as continued transactions */ + if (bytes_to_transfer > MAX_TRANSFER_BYTES) { + /* Round MAX_TRANSFER_BYTES to a multiple of out packet size */ + bytes_to_transfer = MAX_TRANSFER_BYTES / pipe->max_packet; + bytes_to_transfer *= pipe->max_packet; + } + + /* Calculate the number of packets to transfer. If the length is zero + we still need to transfer one packet */ + packets_to_transfer = (bytes_to_transfer + pipe->max_packet - 1) / pipe->max_packet; + if (packets_to_transfer == 0) + packets_to_transfer = 1; + else if ((packets_to_transfer>1) && (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA)) { + /* Limit to one packet when not using DMA. Channels must be restarted + between every packet for IN transactions, so there is no reason to + do multiple packets in a row */ + packets_to_transfer = 1; + bytes_to_transfer = packets_to_transfer * pipe->max_packet; + } + else if (packets_to_transfer > MAX_TRANSFER_PACKETS) { + /* Limit the number of packet and data transferred to what the + hardware can handle */ + packets_to_transfer = MAX_TRANSFER_PACKETS; + bytes_to_transfer = packets_to_transfer * pipe->max_packet; + } + + usbc_hctsiz.s.xfersize = bytes_to_transfer; + usbc_hctsiz.s.pktcnt = packets_to_transfer; + + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index), usbc_hctsiz.u32); + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Start a channel to perform the pipe's head transaction + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param channel Channel to setup + * @param pipe Pipe to start + */ +static void __cvmx_usb_start_channel(cvmx_usb_internal_state_t *usb, + int channel, + cvmx_usb_pipe_t *pipe) +{ + cvmx_usb_transaction_t *transaction = pipe->head; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%d", channel); + CVMX_USB_LOG_PARAM("%p", pipe); + + if (cvmx_unlikely((usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS) || + (pipe->flags & CVMX_USB_PIPE_FLAGS_DEBUG_TRANSFERS))) + cvmx_dprintf("%s: Channel %d started. Pipe %d transaction %d stage %d\n", + __FUNCTION__, channel, __cvmx_usb_get_pipe_handle(usb, pipe), + __cvmx_usb_get_submit_handle(usb, transaction), + transaction->stage); + + /* Make sure all writes to the DMA region get flushed */ + CVMX_SYNCW; + + /* Attach the channel to the pipe */ + usb->pipe_for_channel[channel] = pipe; + pipe->channel = channel; + pipe->flags |= __CVMX_USB_PIPE_FLAGS_SCHEDULED; + + /* Mark this channel as in use */ + usb->idle_hardware_channels &= ~(1<<channel); + + /* Enable the channel interrupt bits */ + { + cvmx_usbcx_hcintx_t usbc_hcint; + cvmx_usbcx_hcintmskx_t usbc_hcintmsk; + cvmx_usbcx_haintmsk_t usbc_haintmsk; + + /* Clear all channel status bits */ + usbc_hcint.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCINTX(channel, usb->index)); + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCINTX(channel, usb->index), usbc_hcint.u32); + + usbc_hcintmsk.u32 = 0; + usbc_hcintmsk.s.chhltdmsk = 1; + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) { + /* Channels need these extra interrupts when we aren't in DMA mode */ + usbc_hcintmsk.s.datatglerrmsk = 1; + usbc_hcintmsk.s.frmovrunmsk = 1; + usbc_hcintmsk.s.bblerrmsk = 1; + usbc_hcintmsk.s.xacterrmsk = 1; + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + /* Splits don't generate xfercompl, so we need ACK and NYET */ + usbc_hcintmsk.s.nyetmsk = 1; + usbc_hcintmsk.s.ackmsk = 1; + } + usbc_hcintmsk.s.nakmsk = 1; + usbc_hcintmsk.s.stallmsk = 1; + usbc_hcintmsk.s.xfercomplmsk = 1; + } + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCINTMSKX(channel, usb->index), usbc_hcintmsk.u32); + + /* Enable the channel interrupt to propagate */ + usbc_haintmsk.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HAINTMSK(usb->index)); + usbc_haintmsk.s.haintmsk |= 1<<channel; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HAINTMSK(usb->index), usbc_haintmsk.u32); + } + + /* Setup the locations the DMA engines use */ + { + uint64_t dma_address = transaction->buffer + transaction->actual_bytes; + if (transaction->type == CVMX_USB_TRANSFER_ISOCHRONOUS) + dma_address = transaction->buffer + transaction->iso_packets[0].offset + transaction->actual_bytes; + __cvmx_usb_write_csr64(usb, CVMX_USBNX_DMA0_OUTB_CHN0(usb->index) + channel*8, dma_address); + __cvmx_usb_write_csr64(usb, CVMX_USBNX_DMA0_INB_CHN0(usb->index) + channel*8, dma_address); + } + + /* Setup both the size of the transfer and the SPLIT characteristics */ + { + cvmx_usbcx_hcspltx_t usbc_hcsplt = {.u32 = 0}; + cvmx_usbcx_hctsizx_t usbc_hctsiz = {.u32 = 0}; + int packets_to_transfer; + int bytes_to_transfer = transaction->buffer_length - transaction->actual_bytes; + + /* ISOCHRONOUS transactions store each individual transfer size in the + packet structure, not the global buffer_length */ + if (transaction->type == CVMX_USB_TRANSFER_ISOCHRONOUS) + bytes_to_transfer = transaction->iso_packets[0].length - transaction->actual_bytes; + + /* We need to do split transactions when we are talking to non high + speed devices that are behind a high speed hub */ + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + /* On the start split phase (stage is even) record the frame number we + will need to send the split complete. We only store the lower two bits + since the time ahead can only be two frames */ + if ((transaction->stage&1) == 0) { + if (transaction->type == CVMX_USB_TRANSFER_BULK) + pipe->split_sc_frame = (usb->frame_number + 1) & 0x7f; + else + pipe->split_sc_frame = (usb->frame_number + 2) & 0x7f; + } + else + pipe->split_sc_frame = -1; + + usbc_hcsplt.s.spltena = 1; + usbc_hcsplt.s.hubaddr = pipe->hub_device_addr; + usbc_hcsplt.s.prtaddr = pipe->hub_port; + usbc_hcsplt.s.compsplt = (transaction->stage == CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE); + + /* SPLIT transactions can only ever transmit one data packet so + limit the transfer size to the max packet size */ + if (bytes_to_transfer > pipe->max_packet) + bytes_to_transfer = pipe->max_packet; + + /* ISOCHRONOUS OUT splits are unique in that they limit + data transfers to 188 byte chunks representing the + begin/middle/end of the data or all */ + if (!usbc_hcsplt.s.compsplt && + (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT) && + (pipe->transfer_type == CVMX_USB_TRANSFER_ISOCHRONOUS)) { + /* Clear the split complete frame number as there isn't going + to be a split complete */ + pipe->split_sc_frame = -1; + /* See if we've started this transfer and sent data */ + if (transaction->actual_bytes == 0) { + /* Nothing sent yet, this is either a begin or the + entire payload */ + if (bytes_to_transfer <= 188) + usbc_hcsplt.s.xactpos = 3; /* Entire payload in one go */ + else + usbc_hcsplt.s.xactpos = 2; /* First part of payload */ + } + else { + /* Continuing the previous data, we must either be + in the middle or at the end */ + if (bytes_to_transfer <= 188) + usbc_hcsplt.s.xactpos = 1; /* End of payload */ + else + usbc_hcsplt.s.xactpos = 0; /* Middle of payload */ + } + /* Again, the transfer size is limited to 188 bytes */ + if (bytes_to_transfer > 188) + bytes_to_transfer = 188; + } + } + + /* Make sure the transfer never exceeds the byte limit of the hardware. + Further bytes will be sent as continued transactions */ + if (bytes_to_transfer > MAX_TRANSFER_BYTES) { + /* Round MAX_TRANSFER_BYTES to a multiple of out packet size */ + bytes_to_transfer = MAX_TRANSFER_BYTES / pipe->max_packet; + bytes_to_transfer *= pipe->max_packet; + } + + /* Calculate the number of packets to transfer. If the length is zero + we still need to transfer one packet */ + packets_to_transfer = (bytes_to_transfer + pipe->max_packet - 1) / pipe->max_packet; + if (packets_to_transfer == 0) + packets_to_transfer = 1; + else if ((packets_to_transfer>1) && (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA)) { + /* Limit to one packet when not using DMA. Channels must be restarted + between every packet for IN transactions, so there is no reason to + do multiple packets in a row */ + packets_to_transfer = 1; + bytes_to_transfer = packets_to_transfer * pipe->max_packet; + } + else if (packets_to_transfer > MAX_TRANSFER_PACKETS) { + /* Limit the number of packet and data transferred to what the + hardware can handle */ + packets_to_transfer = MAX_TRANSFER_PACKETS; + bytes_to_transfer = packets_to_transfer * pipe->max_packet; + } + + usbc_hctsiz.s.xfersize = bytes_to_transfer; + usbc_hctsiz.s.pktcnt = packets_to_transfer; + + /* Update the DATA0/DATA1 toggle */ + usbc_hctsiz.s.pid = __cvmx_usb_get_data_pid(pipe); + /* High speed pipes may need a hardware ping before they start */ + if (pipe->flags & __CVMX_USB_PIPE_FLAGS_NEED_PING) + usbc_hctsiz.s.dopng = 1; + + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCSPLTX(channel, usb->index), usbc_hcsplt.u32); + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index), usbc_hctsiz.u32); + } + + /* Setup the Host Channel Characteristics Register */ + { + cvmx_usbcx_hccharx_t usbc_hcchar = {.u32 = 0}; + + /* Set the startframe odd/even properly. This is only used for periodic */ + usbc_hcchar.s.oddfrm = usb->frame_number&1; + + /* Set the number of back to back packets allowed by this endpoint. + Split transactions interpret "ec" as the number of immediate + retries of failure. These retries happen too quickly, so we + disable these entirely for splits */ + if (__cvmx_usb_pipe_needs_split(usb, pipe)) + usbc_hcchar.s.ec = 1; + else if (pipe->multi_count < 1) + usbc_hcchar.s.ec = 1; + else if (pipe->multi_count > 3) + usbc_hcchar.s.ec = 3; + else + usbc_hcchar.s.ec = pipe->multi_count; + + /* Set the rest of the endpoint specific settings */ + usbc_hcchar.s.devaddr = pipe->device_addr; + usbc_hcchar.s.eptype = transaction->type; + usbc_hcchar.s.lspddev = (pipe->device_speed == CVMX_USB_SPEED_LOW); + usbc_hcchar.s.epdir = pipe->transfer_dir; + usbc_hcchar.s.epnum = pipe->endpoint_num; + usbc_hcchar.s.mps = pipe->max_packet; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index), usbc_hcchar.u32); + } + + /* Do transaction type specific fixups as needed */ + switch (transaction->type) { + case CVMX_USB_TRANSFER_CONTROL: + __cvmx_usb_start_channel_control(usb, channel, pipe); + break; + case CVMX_USB_TRANSFER_BULK: + case CVMX_USB_TRANSFER_INTERRUPT: + break; + case CVMX_USB_TRANSFER_ISOCHRONOUS: + if (!__cvmx_usb_pipe_needs_split(usb, pipe)) { + /* ISO transactions require different PIDs depending on direction + and how many packets are needed */ + if (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT) { + if (pipe->multi_count < 2) /* Need DATA0 */ + USB_SET_FIELD32(CVMX_USBCX_HCTSIZX(channel, usb->index), cvmx_usbcx_hctsizx_t, pid, 0); + else /* Need MDATA */ + USB_SET_FIELD32(CVMX_USBCX_HCTSIZX(channel, usb->index), cvmx_usbcx_hctsizx_t, pid, 3); + } + } + break; + } + { + cvmx_usbcx_hctsizx_t usbc_hctsiz = {.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index))}; + transaction->xfersize = usbc_hctsiz.s.xfersize; + transaction->pktcnt = usbc_hctsiz.s.pktcnt; + } + /* Remeber when we start a split transaction */ + if (__cvmx_usb_pipe_needs_split(usb, pipe)) + usb->active_split = transaction; + USB_SET_FIELD32(CVMX_USBCX_HCCHARX(channel, usb->index), cvmx_usbcx_hccharx_t, chena, 1); + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) + __cvmx_usb_fill_tx_fifo(usb, channel); + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Find a pipe that is ready to be scheduled to hardware. + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param list Pipe list to search + * @param current_frame + * Frame counter to use as a time reference. + * + * @return Pipe or NULL if none are ready + */ +static cvmx_usb_pipe_t *__cvmx_usb_find_ready_pipe(cvmx_usb_internal_state_t *usb, cvmx_usb_pipe_list_t *list, uint64_t current_frame) +{ + cvmx_usb_pipe_t *pipe = list->head; + while (pipe) { + if (!(pipe->flags & __CVMX_USB_PIPE_FLAGS_SCHEDULED) && pipe->head && + (pipe->next_tx_frame <= current_frame) && + ((pipe->split_sc_frame == -1) || ((((int)current_frame - (int)pipe->split_sc_frame) & 0x7f) < 0x40)) && + (!usb->active_split || (usb->active_split == pipe->head))) { + CVMX_PREFETCH(pipe, 128); + CVMX_PREFETCH(pipe->head, 0); + return pipe; + } + pipe = pipe->next; + } + return NULL; +} + + +/** + * @INTERNAL + * Called whenever a pipe might need to be scheduled to the + * hardware. + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param is_sof True if this schedule was called on a SOF interrupt. + */ +static void __cvmx_usb_schedule(cvmx_usb_internal_state_t *usb, int is_sof) +{ + int channel; + cvmx_usb_pipe_t *pipe; + int need_sof; + cvmx_usb_transfer_t ttype; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) { + /* Without DMA we need to be careful to not schedule something at the end of a frame and cause an overrun */ + cvmx_usbcx_hfnum_t hfnum = {.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HFNUM(usb->index))}; + cvmx_usbcx_hfir_t hfir = {.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HFIR(usb->index))}; + if (hfnum.s.frrem < hfir.s.frint/4) + goto done; + } + + while (usb->idle_hardware_channels) { + /* Find an idle channel */ + CVMX_CLZ(channel, usb->idle_hardware_channels); + channel = 31 - channel; + if (cvmx_unlikely(channel > 7)) { + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO)) + cvmx_dprintf("%s: Idle hardware channels has a channel higher than 7. This is wrong\n", __FUNCTION__); + break; + } + + /* Find a pipe needing service */ + pipe = NULL; + if (is_sof) { + /* Only process periodic pipes on SOF interrupts. This way we are + sure that the periodic data is sent in the beginning of the + frame */ + pipe = __cvmx_usb_find_ready_pipe(usb, usb->active_pipes + CVMX_USB_TRANSFER_ISOCHRONOUS, usb->frame_number); + if (cvmx_likely(!pipe)) + pipe = __cvmx_usb_find_ready_pipe(usb, usb->active_pipes + CVMX_USB_TRANSFER_INTERRUPT, usb->frame_number); + } + if (cvmx_likely(!pipe)) { + pipe = __cvmx_usb_find_ready_pipe(usb, usb->active_pipes + CVMX_USB_TRANSFER_CONTROL, usb->frame_number); + if (cvmx_likely(!pipe)) + pipe = __cvmx_usb_find_ready_pipe(usb, usb->active_pipes + CVMX_USB_TRANSFER_BULK, usb->frame_number); + } + if (!pipe) + break; + + CVMX_USB_LOG_PARAM("%d", channel); + CVMX_USB_LOG_PARAM("%p", pipe); + + if (cvmx_unlikely((usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS) || + (pipe->flags & CVMX_USB_PIPE_FLAGS_DEBUG_TRANSFERS))) { + cvmx_usb_transaction_t *transaction = pipe->head; + const cvmx_usb_control_header_t *header = (transaction->control_header) ? cvmx_phys_to_ptr(transaction->control_header) : NULL; + const char *dir = (pipe->transfer_dir == CVMX_USB_DIRECTION_IN) ? "IN" : "OUT"; + const char *type; + switch (pipe->transfer_type) { + case CVMX_USB_TRANSFER_CONTROL: + type = "SETUP"; + dir = (header->s.request_type & 0x80) ? "IN" : "OUT"; + break; + case CVMX_USB_TRANSFER_ISOCHRONOUS: + type = "ISOCHRONOUS"; + break; + case CVMX_USB_TRANSFER_BULK: + type = "BULK"; + break; + default: /* CVMX_USB_TRANSFER_INTERRUPT */ + type = "INTERRUPT"; + break; + } + cvmx_dprintf("%s: Starting pipe %d, transaction %d on channel %d. %s %s len=%d header=0x%llx\n", + __FUNCTION__, __cvmx_usb_get_pipe_handle(usb, pipe), + __cvmx_usb_get_submit_handle(usb, transaction), + channel, type, dir, + transaction->buffer_length, + (header) ? (unsigned long long)header->u64 : 0ull); + } + __cvmx_usb_start_channel(usb, channel, pipe); + } + +done: + /* Only enable SOF interrupts when we have transactions pending in the + future that might need to be scheduled */ + need_sof = 0; + for (ttype=CVMX_USB_TRANSFER_CONTROL; ttype<=CVMX_USB_TRANSFER_INTERRUPT; ttype++) { + pipe = usb->active_pipes[ttype].head; + while (pipe) { + if (pipe->next_tx_frame > usb->frame_number) { + need_sof = 1; + break; + } + pipe=pipe->next; + } + } + USB_SET_FIELD32(CVMX_USBCX_GINTMSK(usb->index), cvmx_usbcx_gintmsk_t, sofmsk, need_sof); + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Call a user's callback for a specific reason. + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param pipe Pipe the callback is for or NULL + * @param transaction + * Transaction the callback is for or NULL + * @param reason Reason this callback is being called + * @param complete_code + * Completion code for the transaction, if any + */ +static void __cvmx_usb_perform_callback(cvmx_usb_internal_state_t *usb, + cvmx_usb_pipe_t *pipe, + cvmx_usb_transaction_t *transaction, + cvmx_usb_callback_t reason, + cvmx_usb_complete_t complete_code) +{ + cvmx_usb_callback_func_t callback = usb->callback[reason]; + void *user_data = usb->callback_data[reason]; + int submit_handle = -1; + int pipe_handle = -1; + int bytes_transferred = 0; + + if (pipe) + pipe_handle = __cvmx_usb_get_pipe_handle(usb, pipe); + + if (transaction) { + submit_handle = __cvmx_usb_get_submit_handle(usb, transaction); + bytes_transferred = transaction->actual_bytes; + /* Transactions are allowed to override the default callback */ + if ((reason == CVMX_USB_CALLBACK_TRANSFER_COMPLETE) && transaction->callback) { + callback = transaction->callback; + user_data = transaction->callback_data; + } + } + + if (!callback) + return; + + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLBACKS)) + cvmx_dprintf("%*s%s: calling callback %p(usb=%p, complete_code=%s, " + "pipe_handle=%d, submit_handle=%d, bytes_transferred=%d, user_data=%p);\n", + 2*usb->indent, "", __FUNCTION__, callback, usb, + __cvmx_usb_complete_to_string(complete_code), + pipe_handle, submit_handle, bytes_transferred, user_data); + + callback((cvmx_usb_state_t *)usb, reason, complete_code, pipe_handle, submit_handle, + bytes_transferred, user_data); + + if (cvmx_unlikely(usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLBACKS)) + cvmx_dprintf("%*s%s: callback %p complete\n", 2*usb->indent, "", + __FUNCTION__, callback); +} + + +/** + * @INTERNAL + * Signal the completion of a transaction and free it. The + * transaction will be removed from the pipe transaction list. + * + * @param usb USB device state populated by + * cvmx_usb_initialize(). + * @param pipe Pipe the transaction is on + * @param transaction + * Transaction that completed + * @param complete_code + * Completion code + */ +static void __cvmx_usb_perform_complete(cvmx_usb_internal_state_t * usb, + cvmx_usb_pipe_t *pipe, + cvmx_usb_transaction_t *transaction, + cvmx_usb_complete_t complete_code) +{ + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%p", pipe); + CVMX_USB_LOG_PARAM("%p", transaction); + CVMX_USB_LOG_PARAM("%d", complete_code); + + /* If this was a split then clear our split in progress marker */ + if (usb->active_split == transaction) + usb->active_split = NULL; + + /* Isochronous transactions need extra processing as they might not be done + after a single data transfer */ + if (cvmx_unlikely(transaction->type == CVMX_USB_TRANSFER_ISOCHRONOUS)) { + /* Update the number of bytes transferred in this ISO packet */ + transaction->iso_packets[0].length = transaction->actual_bytes; + transaction->iso_packets[0].status = complete_code; + + /* If there are more ISOs pending and we succeeded, schedule the next + one */ + if ((transaction->iso_number_packets > 1) && (complete_code == CVMX_USB_COMPLETE_SUCCESS)) { + transaction->actual_bytes = 0; /* No bytes transferred for this packet as of yet */ + transaction->iso_number_packets--; /* One less ISO waiting to transfer */ + transaction->iso_packets++; /* Increment to the next location in our packet array */ + transaction->stage = CVMX_USB_STAGE_NON_CONTROL; + goto done; + } + } + + /* Remove the transaction from the pipe list */ + if (transaction->next) + transaction->next->prev = transaction->prev; + else + pipe->tail = transaction->prev; + if (transaction->prev) + transaction->prev->next = transaction->next; + else + pipe->head = transaction->next; + if (!pipe->head) { + __cvmx_usb_remove_pipe(usb->active_pipes + pipe->transfer_type, pipe); + __cvmx_usb_append_pipe(&usb->idle_pipes, pipe); + + } + __cvmx_usb_perform_callback(usb, pipe, transaction, + CVMX_USB_CALLBACK_TRANSFER_COMPLETE, + complete_code); + __cvmx_usb_free_transaction(usb, transaction); +done: + CVMX_USB_RETURN_NOTHING(); +} + + +/** + * @INTERNAL + * Submit a usb transaction to a pipe. Called for all types + * of transactions. + * + * @param usb + * @param pipe_handle + * Which pipe to submit to. Will be validated in this function. + * @param type Transaction type + * @param flags Flags for the transaction + * @param buffer User buffer for the transaction + * @param buffer_length + * User buffer's length in bytes + * @param control_header + * For control transactions, the 8 byte standard header + * @param iso_start_frame + * For ISO transactions, the start frame + * @param iso_number_packets + * For ISO, the number of packet in the transaction. + * @param iso_packets + * A description of each ISO packet + * @param callback User callback to call when the transaction completes + * @param user_data User's data for the callback + * + * @return Submit handle or negative on failure. Matches the result + * in the external API. + */ +static int __cvmx_usb_submit_transaction(cvmx_usb_internal_state_t *usb, + int pipe_handle, + cvmx_usb_transfer_t type, + int flags, + uint64_t buffer, + int buffer_length, + uint64_t control_header, + int iso_start_frame, + int iso_number_packets, + cvmx_usb_iso_packet_t *iso_packets, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + int submit_handle; + cvmx_usb_transaction_t *transaction; + cvmx_usb_pipe_t *pipe = usb->pipe + pipe_handle; + + CVMX_USB_LOG_CALLED(); + if (cvmx_unlikely((pipe_handle < 0) || (pipe_handle >= MAX_PIPES))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + /* Fail if the pipe isn't open */ + if (cvmx_unlikely((pipe->flags & __CVMX_USB_PIPE_FLAGS_OPEN) == 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(pipe->transfer_type != type)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + transaction = __cvmx_usb_alloc_transaction(usb); + if (cvmx_unlikely(!transaction)) + CVMX_USB_RETURN(CVMX_USB_NO_MEMORY); + + transaction->type = type; + transaction->flags |= flags; + transaction->buffer = buffer; + transaction->buffer_length = buffer_length; + transaction->control_header = control_header; + transaction->iso_start_frame = iso_start_frame; // FIXME: This is not used, implement it + transaction->iso_number_packets = iso_number_packets; + transaction->iso_packets = iso_packets; + transaction->callback = callback; + transaction->callback_data = user_data; + if (transaction->type == CVMX_USB_TRANSFER_CONTROL) + transaction->stage = CVMX_USB_STAGE_SETUP; + else + transaction->stage = CVMX_USB_STAGE_NON_CONTROL; + + transaction->next = NULL; + if (pipe->tail) { + transaction->prev = pipe->tail; + transaction->prev->next = transaction; + } + else { + if (pipe->next_tx_frame < usb->frame_number) + pipe->next_tx_frame = usb->frame_number + pipe->interval - + (usb->frame_number - pipe->next_tx_frame) % pipe->interval; + transaction->prev = NULL; + pipe->head = transaction; + __cvmx_usb_remove_pipe(&usb->idle_pipes, pipe); + __cvmx_usb_append_pipe(usb->active_pipes + pipe->transfer_type, pipe); + } + pipe->tail = transaction; + + submit_handle = __cvmx_usb_get_submit_handle(usb, transaction); + + /* We may need to schedule the pipe if this was the head of the pipe */ + if (!transaction->prev) + __cvmx_usb_schedule(usb, 0); + + CVMX_USB_RETURN(submit_handle); +} + + +/** + * Call to submit a USB Bulk transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +int cvmx_usb_submit_bulk(cvmx_usb_state_t *state, int pipe_handle, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + int submit_handle; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + CVMX_USB_LOG_PARAM("0x%llx", (unsigned long long)buffer); + CVMX_USB_LOG_PARAM("%d", buffer_length); + + /* Pipe handle checking is done later in a common place */ + if (cvmx_unlikely(!buffer)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(buffer_length < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + submit_handle = __cvmx_usb_submit_transaction(usb, pipe_handle, + CVMX_USB_TRANSFER_BULK, + 0, /* flags */ + buffer, + buffer_length, + 0, /* control_header */ + 0, /* iso_start_frame */ + 0, /* iso_number_packets */ + NULL, /* iso_packets */ + callback, + user_data); + CVMX_USB_RETURN(submit_handle); +} + + +/** + * Call to submit a USB Interrupt transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +int cvmx_usb_submit_interrupt(cvmx_usb_state_t *state, int pipe_handle, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + int submit_handle; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + CVMX_USB_LOG_PARAM("0x%llx", (unsigned long long)buffer); + CVMX_USB_LOG_PARAM("%d", buffer_length); + + /* Pipe handle checking is done later in a common place */ + if (cvmx_unlikely(!buffer)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(buffer_length < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + submit_handle = __cvmx_usb_submit_transaction(usb, pipe_handle, + CVMX_USB_TRANSFER_INTERRUPT, + 0, /* flags */ + buffer, + buffer_length, + 0, /* control_header */ + 0, /* iso_start_frame */ + 0, /* iso_number_packets */ + NULL, /* iso_packets */ + callback, + user_data); + CVMX_USB_RETURN(submit_handle); +} + + +/** + * Call to submit a USB Control transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param control_header + * USB 8 byte control header physical address. + * Note that this is NOT A POINTER, but the + * full 64bit physical address of the buffer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +int cvmx_usb_submit_control(cvmx_usb_state_t *state, int pipe_handle, + uint64_t control_header, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + int submit_handle; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + cvmx_usb_control_header_t *header = cvmx_phys_to_ptr(control_header); + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + CVMX_USB_LOG_PARAM("0x%llx", (unsigned long long)control_header); + CVMX_USB_LOG_PARAM("0x%llx", (unsigned long long)buffer); + CVMX_USB_LOG_PARAM("%d", buffer_length); + + /* Pipe handle checking is done later in a common place */ + if (cvmx_unlikely(!control_header)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + /* Some drivers send a buffer with a zero length. God only knows why */ + if (cvmx_unlikely(buffer && (buffer_length < 0))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(!buffer && (buffer_length != 0))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if ((header->s.request_type & 0x80) == 0) + buffer_length = cvmx_le16_to_cpu(header->s.length); + + submit_handle = __cvmx_usb_submit_transaction(usb, pipe_handle, + CVMX_USB_TRANSFER_CONTROL, + 0, /* flags */ + buffer, + buffer_length, + control_header, + 0, /* iso_start_frame */ + 0, /* iso_number_packets */ + NULL, /* iso_packets */ + callback, + user_data); + CVMX_USB_RETURN(submit_handle); +} + + +/** + * Call to submit a USB Isochronous transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param start_frame + * Number of frames into the future to schedule + * this transaction. + * @param flags Flags to control the transfer. See + * cvmx_usb_isochronous_flags_t for the flag + * definitions. + * @param number_packets + * Number of sequential packets to transfer. + * "packets" is a pointer to an array of this + * many packet structures. + * @param packets Description of each transfer packet as + * defined by cvmx_usb_iso_packet_t. The array + * pointed to here must stay valid until the + * complete callback is called. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +int cvmx_usb_submit_isochronous(cvmx_usb_state_t *state, int pipe_handle, + int start_frame, int flags, + int number_packets, + cvmx_usb_iso_packet_t packets[], + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + int submit_handle; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + CVMX_USB_LOG_PARAM("%d", start_frame); + CVMX_USB_LOG_PARAM("0x%x", flags); + CVMX_USB_LOG_PARAM("%d", number_packets); + CVMX_USB_LOG_PARAM("%p", packets); + CVMX_USB_LOG_PARAM("0x%llx", (unsigned long long)buffer); + CVMX_USB_LOG_PARAM("%d", buffer_length); + + /* Pipe handle checking is done later in a common place */ + if (cvmx_unlikely(start_frame < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(flags & ~(CVMX_USB_ISOCHRONOUS_FLAGS_ALLOW_SHORT | CVMX_USB_ISOCHRONOUS_FLAGS_ASAP))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(number_packets < 1)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(!packets)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(!buffer)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(buffer_length < 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + submit_handle = __cvmx_usb_submit_transaction(usb, pipe_handle, + CVMX_USB_TRANSFER_ISOCHRONOUS, + flags, + buffer, + buffer_length, + 0, /* control_header */ + start_frame, + number_packets, + packets, + callback, + user_data); + CVMX_USB_RETURN(submit_handle); +} + + +/** + * Cancel one outstanding request in a pipe. Canceling a request + * can fail if the transaction has already completed before cancel + * is called. Even after a successful cancel call, it may take + * a frame or two for the cvmx_usb_poll() function to call the + * associated callback. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to cancel requests in. + * @param submit_handle + * Handle to transaction to cancel, returned by the submit function. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_cancel(cvmx_usb_state_t *state, int pipe_handle, + int submit_handle) +{ + cvmx_usb_transaction_t *transaction; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + cvmx_usb_pipe_t *pipe = usb->pipe + pipe_handle; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + CVMX_USB_LOG_PARAM("%d", submit_handle); + + if (cvmx_unlikely((pipe_handle < 0) || (pipe_handle >= MAX_PIPES))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely((submit_handle < 0) || (submit_handle >= MAX_TRANSACTIONS))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Fail if the pipe isn't open */ + if (cvmx_unlikely((pipe->flags & __CVMX_USB_PIPE_FLAGS_OPEN) == 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + transaction = usb->transaction + submit_handle; + + /* Fail if this transaction already completed */ + if (cvmx_unlikely((transaction->flags & __CVMX_USB_TRANSACTION_FLAGS_IN_USE) == 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* If the transaction is the HEAD of the queue and scheduled. We need to + treat it special */ + if ((pipe->head == transaction) && + (pipe->flags & __CVMX_USB_PIPE_FLAGS_SCHEDULED)) { + cvmx_usbcx_hccharx_t usbc_hcchar; + + usb->pipe_for_channel[pipe->channel] = NULL; + pipe->flags &= ~__CVMX_USB_PIPE_FLAGS_SCHEDULED; + + CVMX_SYNCW; + + usbc_hcchar.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCCHARX(pipe->channel, usb->index)); + /* If the channel isn't enabled then the transaction already completed */ + if (usbc_hcchar.s.chena) { + usbc_hcchar.s.chdis = 1; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCCHARX(pipe->channel, usb->index), usbc_hcchar.u32); + } + } + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_CANCEL); + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Cancel all outstanding requests in a pipe. Logically all this + * does is call cvmx_usb_cancel() in a loop. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to cancel requests in. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_cancel_all(cvmx_usb_state_t *state, int pipe_handle) +{ + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + cvmx_usb_pipe_t *pipe = usb->pipe + pipe_handle; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + if (cvmx_unlikely((pipe_handle < 0) || (pipe_handle >= MAX_PIPES))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Fail if the pipe isn't open */ + if (cvmx_unlikely((pipe->flags & __CVMX_USB_PIPE_FLAGS_OPEN) == 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Simply loop through and attempt to cancel each transaction */ + while (pipe->head) { + cvmx_usb_status_t result = cvmx_usb_cancel(state, pipe_handle, + __cvmx_usb_get_submit_handle(usb, pipe->head)); + if (cvmx_unlikely(result != CVMX_USB_SUCCESS)) + CVMX_USB_RETURN(result); + } + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Close a pipe created with cvmx_usb_open_pipe(). + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to close. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. CVMX_USB_BUSY is returned if the + * pipe has outstanding transfers. + */ +cvmx_usb_status_t cvmx_usb_close_pipe(cvmx_usb_state_t *state, int pipe_handle) +{ + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + cvmx_usb_pipe_t *pipe = usb->pipe + pipe_handle; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", pipe_handle); + if (cvmx_unlikely((pipe_handle < 0) || (pipe_handle >= MAX_PIPES))) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Fail if the pipe isn't open */ + if (cvmx_unlikely((pipe->flags & __CVMX_USB_PIPE_FLAGS_OPEN) == 0)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + /* Fail if the pipe has pending transactions */ + if (cvmx_unlikely(pipe->head)) + CVMX_USB_RETURN(CVMX_USB_BUSY); + + pipe->flags = 0; + __cvmx_usb_remove_pipe(&usb->idle_pipes, pipe); + __cvmx_usb_append_pipe(&usb->free_pipes, pipe); + + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Register a function to be called when various USB events occur. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param reason Which event to register for. + * @param callback Function to call when the event occurs. + * @param user_data User data parameter to the function. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_register_callback(cvmx_usb_state_t *state, + cvmx_usb_callback_t reason, + cvmx_usb_callback_func_t callback, + void *user_data) +{ + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + CVMX_USB_LOG_PARAM("%d", reason); + CVMX_USB_LOG_PARAM("%p", callback); + CVMX_USB_LOG_PARAM("%p", user_data); + if (cvmx_unlikely(reason >= __CVMX_USB_CALLBACK_END)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + if (cvmx_unlikely(!callback)) + CVMX_USB_RETURN(CVMX_USB_INVALID_PARAM); + + usb->callback[reason] = callback; + usb->callback_data[reason] = user_data; + + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} + + +/** + * Get the current USB protocol level frame number. The frame + * number is always in the range of 0-0x7ff. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return USB frame number + */ +int cvmx_usb_get_frame_number(cvmx_usb_state_t *state) +{ + int frame_number; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + cvmx_usbcx_hfnum_t usbc_hfnum; + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + usbc_hfnum.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HFNUM(usb->index)); + frame_number = usbc_hfnum.s.frnum; + + CVMX_USB_RETURN(frame_number); +} + + +/** + * @INTERNAL + * Poll a channel for status + * + * @param usb USB device + * @param channel Channel to poll + * + * @return Zero on success + */ +static int __cvmx_usb_poll_channel(cvmx_usb_internal_state_t *usb, int channel) +{ + cvmx_usbcx_hcintx_t usbc_hcint; + cvmx_usbcx_hctsizx_t usbc_hctsiz; + cvmx_usbcx_hccharx_t usbc_hcchar; + cvmx_usb_pipe_t *pipe; + cvmx_usb_transaction_t *transaction; + int bytes_this_transfer; + int bytes_in_last_packet; + int packets_processed; + int buffer_space_left; + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", usb); + CVMX_USB_LOG_PARAM("%d", channel); + + /* Read the interrupt status bits for the channel */ + usbc_hcint.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCINTX(channel, usb->index)); + + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) { + usbc_hcchar.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index)); + + if (usbc_hcchar.s.chena && usbc_hcchar.s.chdis) { + /* There seems to be a bug in CN31XX which can cause interrupt + IN transfers to get stuck until we do a write of HCCHARX + without changing things */ + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index), usbc_hcchar.u32); + CVMX_USB_RETURN(0); + } + + /* In non DMA mode the channels don't halt themselves. We need to + manually disable channels that are left running */ + if (!usbc_hcint.s.chhltd) { + if (usbc_hcchar.s.chena) { + cvmx_usbcx_hcintmskx_t hcintmsk; + /* Disable all interrupts except CHHLTD */ + hcintmsk.u32 = 0; + hcintmsk.s.chhltdmsk = 1; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCINTMSKX(channel, usb->index), hcintmsk.u32); + usbc_hcchar.s.chdis = 1; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index), usbc_hcchar.u32); + CVMX_USB_RETURN(0); + } + else if (usbc_hcint.s.xfercompl) { + /* Successful IN/OUT with transfer complete. Channel halt isn't needed */ + } + else { + cvmx_dprintf("USB%d: Channel %d interrupt without halt\n", usb->index, channel); + CVMX_USB_RETURN(0); + } + } + } + else { + /* There is are no interrupts that we need to process when the channel is + still running */ + if (!usbc_hcint.s.chhltd) + CVMX_USB_RETURN(0); + } + + /* Disable the channel interrupts now that it is done */ + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HCINTMSKX(channel, usb->index), 0); + usb->idle_hardware_channels |= (1<<channel); + + /* Make sure this channel is tied to a valid pipe */ + pipe = usb->pipe_for_channel[channel]; + CVMX_PREFETCH(pipe, 0); + CVMX_PREFETCH(pipe, 128); + if (!pipe) + CVMX_USB_RETURN(0); + transaction = pipe->head; + CVMX_PREFETCH0(transaction); + + /* Disconnect this pipe from the HW channel. Later the schedule function will + figure out which pipe needs to go */ + usb->pipe_for_channel[channel] = NULL; + pipe->flags &= ~__CVMX_USB_PIPE_FLAGS_SCHEDULED; + + /* Read the channel config info so we can figure out how much data + transfered */ + usbc_hcchar.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCCHARX(channel, usb->index)); + usbc_hctsiz.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HCTSIZX(channel, usb->index)); + + /* Calculating the number of bytes successfully transferred is dependent on + the transfer direction */ + packets_processed = transaction->pktcnt - usbc_hctsiz.s.pktcnt; + if (usbc_hcchar.s.epdir) { + /* IN transactions are easy. For every byte received the hardware + decrements xfersize. All we need to do is subtract the current + value of xfersize from its starting value and we know how many + bytes were written to the buffer */ + bytes_this_transfer = transaction->xfersize - usbc_hctsiz.s.xfersize; + } + else { + /* OUT transaction don't decrement xfersize. Instead pktcnt is + decremented on every successful packet send. The hardware does + this when it receives an ACK, or NYET. If it doesn't + receive one of these responses pktcnt doesn't change */ + bytes_this_transfer = packets_processed * usbc_hcchar.s.mps; + /* The last packet may not be a full transfer if we didn't have + enough data */ + if (bytes_this_transfer > transaction->xfersize) + bytes_this_transfer = transaction->xfersize; + } + /* Figure out how many bytes were in the last packet of the transfer */ + if (packets_processed) + bytes_in_last_packet = bytes_this_transfer - (packets_processed-1) * usbc_hcchar.s.mps; + else + bytes_in_last_packet = bytes_this_transfer; + + /* As a special case, setup transactions output the setup header, not + the user's data. For this reason we don't count setup data as bytes + transferred */ + if ((transaction->stage == CVMX_USB_STAGE_SETUP) || + (transaction->stage == CVMX_USB_STAGE_SETUP_SPLIT_COMPLETE)) + bytes_this_transfer = 0; + + /* Optional debug output */ + if (cvmx_unlikely((usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS) || + (pipe->flags & CVMX_USB_PIPE_FLAGS_DEBUG_TRANSFERS))) + cvmx_dprintf("%s: Channel %d halted. Pipe %d transaction %d stage %d bytes=%d\n", + __FUNCTION__, channel, + __cvmx_usb_get_pipe_handle(usb, pipe), + __cvmx_usb_get_submit_handle(usb, transaction), + transaction->stage, bytes_this_transfer); + + /* Add the bytes transferred to the running total. It is important that + bytes_this_transfer doesn't count any data that needs to be + retransmitted */ + transaction->actual_bytes += bytes_this_transfer; + if (transaction->type == CVMX_USB_TRANSFER_ISOCHRONOUS) + buffer_space_left = transaction->iso_packets[0].length - transaction->actual_bytes; + else + buffer_space_left = transaction->buffer_length - transaction->actual_bytes; + + /* We need to remember the PID toggle state for the next transaction. The + hardware already updated it for the next transaction */ + pipe->pid_toggle = !(usbc_hctsiz.s.pid == 0); + + /* For high speed bulk out, assume the next transaction will need to do a + ping before proceeding. If this isn't true the ACK processing below + will clear this flag */ + if ((pipe->device_speed == CVMX_USB_SPEED_HIGH) && + (pipe->transfer_type == CVMX_USB_TRANSFER_BULK) && + (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT)) + pipe->flags |= __CVMX_USB_PIPE_FLAGS_NEED_PING; + + if (usbc_hcint.s.stall) { + /* STALL as a response means this transaction cannot be completed + because the device can't process transactions. Tell the user. Any + data that was transferred will be counted on the actual bytes + transferred */ + pipe->pid_toggle = 0; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_STALL); + } + else if (usbc_hcint.s.xacterr) { + /* We know at least one packet worked if we get a ACK or NAK. Reset the retry counter */ + if (usbc_hcint.s.nak || usbc_hcint.s.ack) + transaction->retries = 0; + transaction->retries++; + if (transaction->retries > MAX_RETRIES) { + /* XactErr as a response means the device signaled something wrong with + the transfer. For example, PID toggle errors cause these */ + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_XACTERR); + } + else { + /* If this was a split then clear our split in progress marker */ + if (usb->active_split == transaction) + usb->active_split = NULL; + /* Rewind to the beginning of the transaction by anding off the + split complete bit */ + transaction->stage &= ~1; + pipe->split_sc_frame = -1; + pipe->next_tx_frame += pipe->interval; + if (pipe->next_tx_frame < usb->frame_number) + pipe->next_tx_frame = usb->frame_number + pipe->interval - + (usb->frame_number - pipe->next_tx_frame) % pipe->interval; + } + } + else if (usbc_hcint.s.bblerr) + { + /* Babble Error (BblErr) */ + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_BABBLEERR); + } + else if (usbc_hcint.s.datatglerr) + { + /* We'll retry the exact same transaction again */ + transaction->retries++; + } + else if (usbc_hcint.s.nyet) { + /* NYET as a response is only allowed in three cases: as a response to + a ping, as a response to a split transaction, and as a response to + a bulk out. The ping case is handled by hardware, so we only have + splits and bulk out */ + if (!__cvmx_usb_pipe_needs_split(usb, pipe)) { + transaction->retries = 0; + /* If there is more data to go then we need to try again. Otherwise + this transaction is complete */ + if ((buffer_space_left == 0) || (bytes_in_last_packet < pipe->max_packet)) + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + else { + /* Split transactions retry the split complete 4 times then rewind + to the start split and do the entire transactions again */ + transaction->retries++; + if ((transaction->retries & 0x3) == 0) { + /* Rewind to the beginning of the transaction by anding off the + split complete bit */ + transaction->stage &= ~1; + pipe->split_sc_frame = -1; + } + } + } + else if (usbc_hcint.s.ack) { + transaction->retries = 0; + /* The ACK bit can only be checked after the other error bits. This is + because a multi packet transfer may succeed in a number of packets + and then get a different response on the last packet. In this case + both ACK and the last response bit will be set. If none of the + other response bits is set, then the last packet must have been an + ACK */ + + /* Since we got an ACK, we know we don't need to do a ping on this + pipe */ + pipe->flags &= ~__CVMX_USB_PIPE_FLAGS_NEED_PING; + + switch (transaction->type) + { + case CVMX_USB_TRANSFER_CONTROL: + switch (transaction->stage) + { + case CVMX_USB_STAGE_NON_CONTROL: + case CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE: + /* This should be impossible */ + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_ERROR); + break; + case CVMX_USB_STAGE_SETUP: + pipe->pid_toggle = 1; + if (__cvmx_usb_pipe_needs_split(usb, pipe)) + transaction->stage = CVMX_USB_STAGE_SETUP_SPLIT_COMPLETE; + else { + cvmx_usb_control_header_t *header = cvmx_phys_to_ptr(transaction->control_header); + if (header->s.length) + transaction->stage = CVMX_USB_STAGE_DATA; + else + transaction->stage = CVMX_USB_STAGE_STATUS; + } + break; + case CVMX_USB_STAGE_SETUP_SPLIT_COMPLETE: + { + cvmx_usb_control_header_t *header = cvmx_phys_to_ptr(transaction->control_header); + if (header->s.length) + transaction->stage = CVMX_USB_STAGE_DATA; + else + transaction->stage = CVMX_USB_STAGE_STATUS; + } + break; + case CVMX_USB_STAGE_DATA: + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + transaction->stage = CVMX_USB_STAGE_DATA_SPLIT_COMPLETE; + /* For setup OUT data that are splits, the hardware + doesn't appear to count transferred data. Here + we manually update the data transferred */ + if (!usbc_hcchar.s.epdir) { + if (buffer_space_left < pipe->max_packet) + transaction->actual_bytes += buffer_space_left; + else + transaction->actual_bytes += pipe->max_packet; + } + } + else if ((buffer_space_left == 0) || (bytes_in_last_packet < pipe->max_packet)) { + pipe->pid_toggle = 1; + transaction->stage = CVMX_USB_STAGE_STATUS; + } + break; + case CVMX_USB_STAGE_DATA_SPLIT_COMPLETE: + if ((buffer_space_left == 0) || (bytes_in_last_packet < pipe->max_packet)) { + pipe->pid_toggle = 1; + transaction->stage = CVMX_USB_STAGE_STATUS; + } + else { + transaction->stage = CVMX_USB_STAGE_DATA; + } + break; + case CVMX_USB_STAGE_STATUS: + if (__cvmx_usb_pipe_needs_split(usb, pipe)) + transaction->stage = CVMX_USB_STAGE_STATUS_SPLIT_COMPLETE; + else + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + break; + case CVMX_USB_STAGE_STATUS_SPLIT_COMPLETE: + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + break; + } + break; + case CVMX_USB_TRANSFER_BULK: + case CVMX_USB_TRANSFER_INTERRUPT: + /* The only time a bulk transfer isn't complete when + it finishes with an ACK is during a split transaction. For + splits we need to continue the transfer if more data is + needed */ + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + if (transaction->stage == CVMX_USB_STAGE_NON_CONTROL) + transaction->stage = CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE; + else { + if (buffer_space_left && (bytes_in_last_packet == pipe->max_packet)) + transaction->stage = CVMX_USB_STAGE_NON_CONTROL; + else { + if (transaction->type == CVMX_USB_TRANSFER_INTERRUPT) + pipe->next_tx_frame += pipe->interval; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + } + } + else { + if ((pipe->device_speed == CVMX_USB_SPEED_HIGH) && + (pipe->transfer_type == CVMX_USB_TRANSFER_BULK) && + (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT) && + (usbc_hcint.s.nak)) + pipe->flags |= __CVMX_USB_PIPE_FLAGS_NEED_PING; + if (!buffer_space_left || (bytes_in_last_packet < pipe->max_packet)) { + if (transaction->type == CVMX_USB_TRANSFER_INTERRUPT) + pipe->next_tx_frame += pipe->interval; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + } + break; + case CVMX_USB_TRANSFER_ISOCHRONOUS: + if (__cvmx_usb_pipe_needs_split(usb, pipe)) { + /* ISOCHRONOUS OUT splits don't require a complete split stage. + Instead they use a sequence of begin OUT splits to transfer + the data 188 bytes at a time. Once the transfer is complete, + the pipe sleeps until the next schedule interval */ + if (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT) { + /* If no space left or this wasn't a max size packet then + this transfer is complete. Otherwise start it again + to send the next 188 bytes */ + if (!buffer_space_left || (bytes_this_transfer < 188)) { + pipe->next_tx_frame += pipe->interval; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + } + else { + if (transaction->stage == CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE) { + /* We are in the incoming data phase. Keep getting + data until we run out of space or get a small + packet */ + if ((buffer_space_left == 0) || (bytes_in_last_packet < pipe->max_packet)) { + pipe->next_tx_frame += pipe->interval; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + } + else + transaction->stage = CVMX_USB_STAGE_NON_CONTROL_SPLIT_COMPLETE; + } + } + else { + pipe->next_tx_frame += pipe->interval; + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_SUCCESS); + } + break; + } + } + else if (usbc_hcint.s.nak) { + /* If this was a split then clear our split in progress marker */ + if (usb->active_split == transaction) + usb->active_split = NULL; + /* NAK as a response means the device couldn't accept the transaction, + but it should be retried in the future. Rewind to the beginning of + the transaction by anding off the split complete bit. Retry in the + next interval */ + transaction->retries = 0; + transaction->stage &= ~1; + pipe->next_tx_frame += pipe->interval; + if (pipe->next_tx_frame < usb->frame_number) + pipe->next_tx_frame = usb->frame_number + pipe->interval - + (usb->frame_number - pipe->next_tx_frame) % pipe->interval; + } + else { + cvmx_usb_port_status_t port; + port = cvmx_usb_get_status((cvmx_usb_state_t *)usb); + if (port.port_enabled) + { + /* We'll retry the exact same transaction again */ + transaction->retries++; + } + else + { + /* We get channel halted interrupts with no result bits sets when the + cable is unplugged */ + __cvmx_usb_perform_complete(usb, pipe, transaction, CVMX_USB_COMPLETE_ERROR); + } + } + CVMX_USB_RETURN(0); +} + + +/** + * Poll the USB block for status and call all needed callback + * handlers. This function is meant to be called in the interrupt + * handler for the USB controller. It can also be called + * periodically in a loop for non-interrupt based operation. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +cvmx_usb_status_t cvmx_usb_poll(cvmx_usb_state_t *state) +{ + cvmx_usbcx_hfnum_t usbc_hfnum; + cvmx_usbcx_gintsts_t usbc_gintsts; + cvmx_usb_internal_state_t *usb = (cvmx_usb_internal_state_t*)state; + + CVMX_PREFETCH(usb, 0); + CVMX_PREFETCH(usb, 1*128); + CVMX_PREFETCH(usb, 2*128); + CVMX_PREFETCH(usb, 3*128); + CVMX_PREFETCH(usb, 4*128); + + CVMX_USB_LOG_CALLED(); + CVMX_USB_LOG_PARAM("%p", state); + + /* Update the frame counter */ + usbc_hfnum.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HFNUM(usb->index)); + if ((usb->frame_number&0x3fff) > usbc_hfnum.s.frnum) + usb->frame_number += 0x4000; + usb->frame_number &= ~0x3fffull; + usb->frame_number |= usbc_hfnum.s.frnum; + + /* Read the pending interrupts */ + usbc_gintsts.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_GINTSTS(usb->index)); + + /* Clear the interrupts now that we know about them */ + __cvmx_usb_write_csr32(usb, CVMX_USBCX_GINTSTS(usb->index), usbc_gintsts.u32); + + if (usbc_gintsts.s.rxflvl) { + /* RxFIFO Non-Empty (RxFLvl) + Indicates that there is at least one packet pending to be read + from the RxFIFO. */ + /* In DMA mode this is handled by hardware */ + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) + __cvmx_usb_poll_rx_fifo(usb); + } + if (usbc_gintsts.s.ptxfemp || usbc_gintsts.s.nptxfemp) { + /* Fill the Tx FIFOs when not in DMA mode */ + if (usb->init_flags & CVMX_USB_INITIALIZE_FLAGS_NO_DMA) + __cvmx_usb_poll_tx_fifo(usb); + } + if (usbc_gintsts.s.disconnint || usbc_gintsts.s.prtint) { + cvmx_usbcx_hprt_t usbc_hprt; + /* Disconnect Detected Interrupt (DisconnInt) + Asserted when a device disconnect is detected. */ + + /* Host Port Interrupt (PrtInt) + The core sets this bit to indicate a change in port status of one + of the O2P USB core ports in Host mode. The application must + read the Host Port Control and Status (HPRT) register to + determine the exact event that caused this interrupt. The + application must clear the appropriate status bit in the Host Port + Control and Status register to clear this bit. */ + + /* Call the user's port callback */ + __cvmx_usb_perform_callback(usb, NULL, NULL, + CVMX_USB_CALLBACK_PORT_CHANGED, + CVMX_USB_COMPLETE_SUCCESS); + /* Clear the port change bits */ + usbc_hprt.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HPRT(usb->index)); + usbc_hprt.s.prtena = 0; + __cvmx_usb_write_csr32(usb, CVMX_USBCX_HPRT(usb->index), usbc_hprt.u32); + } + if (usbc_gintsts.s.hchint) { + /* Host Channels Interrupt (HChInt) + The core sets this bit to indicate that an interrupt is pending on + one of the channels of the core (in Host mode). The application + must read the Host All Channels Interrupt (HAINT) register to + determine the exact number of the channel on which the + interrupt occurred, and then read the corresponding Host + Channel-n Interrupt (HCINTn) register to determine the exact + cause of the interrupt. The application must clear the + appropriate status bit in the HCINTn register to clear this bit. */ + cvmx_usbcx_haint_t usbc_haint; + usbc_haint.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HAINT(usb->index)); + while (usbc_haint.u32) { + int channel; + CVMX_CLZ(channel, usbc_haint.u32); + channel = 31 - channel; + __cvmx_usb_poll_channel(usb, channel); + usbc_haint.u32 ^= 1<<channel; + } + } + + __cvmx_usb_schedule(usb, usbc_gintsts.s.sof); + + CVMX_USB_RETURN(CVMX_USB_SUCCESS); +} diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.h b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.h new file mode 100644 index 0000000000..db9cc05e5d --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usb.h @@ -0,0 +1,1085 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This Software, including technical data, may be subject to U.S. export control + * laws, including the U.S. Export Administration Act and its associated + * regulations, and may be subject to export or import regulations in other + * countries. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR + * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO + * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR + * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM + * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, + * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF + * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR + * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR + * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + ***********************license end**************************************/ + + +/** + * @file + * + * "cvmx-usb.h" defines a set of low level USB functions to help + * developers create Octeon USB drivers for various operating + * systems. These functions provide a generic API to the Octeon + * USB blocks, hiding the internal hardware specific + * operations. + * + * At a high level the device driver needs to: + * + * -# Call cvmx_usb_get_num_ports() to get the number of + * supported ports. + * -# Call cvmx_usb_initialize() for each Octeon USB port. + * -# Enable the port using cvmx_usb_enable(). + * -# Either periodically, or in an interrupt handler, call + * cvmx_usb_poll() to service USB events. + * -# Manage pipes using cvmx_usb_open_pipe() and + * cvmx_usb_close_pipe(). + * -# Manage transfers using cvmx_usb_submit_*() and + * cvmx_usb_cancel*(). + * -# Shutdown USB on unload using cvmx_usb_shutdown(). + * + * To monitor USB status changes, the device driver must use + * cvmx_usb_register_callback() to register for events that it + * is interested in. Below are a few hints on successfully + * implementing a driver on top of this API. + * + * <h2>Initialization</h2> + * + * When a driver is first loaded, it is normally not necessary + * to bring up the USB port completely. Most operating systems + * expect to initialize and enable the port in two independent + * steps. Normally an operating system will probe hardware, + * initialize anything found, and then enable the hardware. + * + * In the probe phase you should: + * -# Use cvmx_usb_get_num_ports() to determine the number of + * USB port to be supported. + * -# Allocate space for a cvmx_usb_state_t structure for each + * port. + * -# Tell the operating system about each port + * + * In the initialization phase you should: + * -# Use cvmx_usb_initialize() on each port. + * -# Do not call cvmx_usb_enable(). This leaves the USB port in + * the disabled state until the operating system is ready. + * + * Finally, in the enable phase you should: + * -# Call cvmx_usb_enable() on the appropriate port. + * -# Note that some operating system use a RESET instead of an + * enable call. To implement RESET, you should call + * cvmx_usb_disable() followed by cvmx_usb_enable(). + * + * <h2>Locking</h2> + * + * All of the functions in the cvmx-usb API assume exclusive + * access to the USB hardware and internal data structures. This + * means that the driver must provide locking as necessary. + * + * In the single CPU state it is normally enough to disable + * interrupts before every call to cvmx_usb*() and enable them + * again after the call is complete. Keep in mind that it is + * very common for the callback handlers to make additional + * calls into cvmx-usb, so the disable/enable must be protected + * against recursion. As an example, the Linux kernel + * local_irq_save() and local_irq_restore() are perfect for this + * in the non SMP case. + * + * In the SMP case, locking is more complicated. For SMP you not + * only need to disable interrupts on the local core, but also + * take a lock to make sure that another core cannot call + * cvmx-usb. + * + * <h2>Port callback</h2> + * + * The port callback prototype needs to look as follows: + * + * void port_callback(cvmx_usb_state_t *usb, + * cvmx_usb_callback_t reason, + * cvmx_usb_complete_t status, + * int pipe_handle, + * int submit_handle, + * int bytes_transferred, + * void *user_data); + * - @b usb is the cvmx_usb_state_t for the port. + * - @b reason will always be + * CVMX_USB_CALLBACK_PORT_CHANGED. + * - @b status will always be CVMX_USB_COMPLETE_SUCCESS. + * - @b pipe_handle will always be -1. + * - @b submit_handle will always be -1. + * - @b bytes_transferred will always be 0. + * - @b user_data is the void pointer originally passed along + * with the callback. Use this for any state information you + * need. + * + * The port callback will be called whenever the user plugs / + * unplugs a device from the port. It will not be called when a + * device is plugged / unplugged from a hub connected to the + * root port. Normally all the callback needs to do is tell the + * operating system to poll the root hub for status. Under + * Linux, this is performed by calling usb_hcd_poll_rh_status(). + * In the Linux driver we use @b user_data. to pass around the + * Linux "hcd" structure. Once the port callback completes, + * Linux automatically calls octeon_usb_hub_status_data() which + * uses cvmx_usb_get_status() to determine the root port status. + * + * <h2>Complete callback</h2> + * + * The completion callback prototype needs to look as follows: + * + * void complete_callback(cvmx_usb_state_t *usb, + * cvmx_usb_callback_t reason, + * cvmx_usb_complete_t status, + * int pipe_handle, + * int submit_handle, + * int bytes_transferred, + * void *user_data); + * - @b usb is the cvmx_usb_state_t for the port. + * - @b reason will always be + * CVMX_USB_CALLBACK_TRANSFER_COMPLETE. + * - @b status will be one of the cvmx_usb_complete_t + * enumerations. + * - @b pipe_handle is the handle to the pipe the transaction + * was originally submitted on. + * - @b submit_handle is the handle returned by the original + * cvmx_usb_submit_* call. + * - @b bytes_transferred is the number of bytes successfully + * transferred in the transaction. This will be zero on most + * error conditions. + * - @b user_data is the void pointer originally passed along + * with the callback. Use this for any state information you + * need. For example, the Linux "urb" is stored in here in the + * Linux driver. + * + * In general your callback handler should use @b status and @b + * bytes_transferred to tell the operating system the how the + * transaction completed. Normally the pipe is not changed in + * this callback. + * + * <h2>Canceling transactions</h2> + * + * When a transaction is cancelled using cvmx_usb_cancel*(), the + * actual length of time until the complete callback is called + * can vary greatly. It may be called before cvmx_usb_cancel*() + * returns, or it may be called a number of usb frames in the + * future once the hardware frees the transaction. In either of + * these cases, the complete handler will receive + * CVMX_USB_COMPLETE_CANCEL. + * + * <h2>Handling pipes</h2> + * + * USB "pipes" is a software construct created by this API to + * enable the ordering of usb transactions to a device endpoint. + * Octeon's underlying hardware doesn't have any concept + * equivalent to "pipes". The hardware instead has eight + * channels that can be used simultaneously to have up to eight + * transaction in process at the same time. In order to maintain + * ordering in a pipe, the transactions for a pipe will only be + * active in one hardware channel at a time. From an API user's + * perspective, this doesn't matter but it can be helpful to + * keep this in mind when you are probing hardware while + * debugging. + * + * Also keep in mind that usb transactions contain state + * information about the previous transaction to the same + * endpoint. Each transaction has a PID toggle that changes 0/1 + * between each sub packet. This is maintained in the pipe data + * structures. For this reason, you generally cannot create and + * destroy a pipe for every transaction. A sequence of + * transaction to the same endpoint must use the same pipe. + * + * <h2>Root Hub</h2> + * + * Some operating systems view the usb root port as a normal usb + * hub. These systems attempt to control the root hub with + * messages similar to the usb 2.0 spec for hub control and + * status. For these systems it may be necessary to write + * function to decode standard usb control messages into + * equivalent cvmx-usb API calls. As an example, the following + * code is used under Linux for some of the basic hub control + * messages. + * + * @code + * static int octeon_usb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) + * { + * cvmx_usb_state_t *usb = (cvmx_usb_state_t *)hcd->hcd_priv; + * cvmx_usb_port_status_t usb_port_status; + * int port_status; + * struct usb_hub_descriptor *desc; + * unsigned long flags; + * + * switch (typeReq) + * { + * case ClearHubFeature: + * DEBUG_ROOT_HUB("OcteonUSB: ClearHubFeature\n"); + * switch (wValue) + * { + * case C_HUB_LOCAL_POWER: + * case C_HUB_OVER_CURRENT: + * // Nothing required here + * break; + * default: + * return -EINVAL; + * } + * break; + * case ClearPortFeature: + * DEBUG_ROOT_HUB("OcteonUSB: ClearPortFeature"); + * if (wIndex != 1) + * { + * DEBUG_ROOT_HUB(" INVALID\n"); + * return -EINVAL; + * } + * + * switch (wValue) + * { + * case USB_PORT_FEAT_ENABLE: + * DEBUG_ROOT_HUB(" ENABLE"); + * local_irq_save(flags); + * cvmx_usb_disable(usb); + * local_irq_restore(flags); + * break; + * case USB_PORT_FEAT_SUSPEND: + * DEBUG_ROOT_HUB(" SUSPEND"); + * // Not supported on Octeon + * break; + * case USB_PORT_FEAT_POWER: + * DEBUG_ROOT_HUB(" POWER"); + * // Not supported on Octeon + * break; + * case USB_PORT_FEAT_INDICATOR: + * DEBUG_ROOT_HUB(" INDICATOR"); + * // Port inidicator not supported + * break; + * case USB_PORT_FEAT_C_CONNECTION: + * DEBUG_ROOT_HUB(" C_CONNECTION"); + * // Clears drivers internal connect status change flag + * cvmx_usb_set_status(usb, cvmx_usb_get_status(usb)); + * break; + * case USB_PORT_FEAT_C_RESET: + * DEBUG_ROOT_HUB(" C_RESET"); + * // Clears the driver's internal Port Reset Change flag + * cvmx_usb_set_status(usb, cvmx_usb_get_status(usb)); + * break; + * case USB_PORT_FEAT_C_ENABLE: + * DEBUG_ROOT_HUB(" C_ENABLE"); + * // Clears the driver's internal Port Enable/Disable Change flag + * cvmx_usb_set_status(usb, cvmx_usb_get_status(usb)); + * break; + * case USB_PORT_FEAT_C_SUSPEND: + * DEBUG_ROOT_HUB(" C_SUSPEND"); + * // Clears the driver's internal Port Suspend Change flag, + * which is set when resume signaling on the host port is + * complete + * break; + * case USB_PORT_FEAT_C_OVER_CURRENT: + * DEBUG_ROOT_HUB(" C_OVER_CURRENT"); + * // Clears the driver's overcurrent Change flag + * cvmx_usb_set_status(usb, cvmx_usb_get_status(usb)); + * break; + * default: + * DEBUG_ROOT_HUB(" UNKNOWN\n"); + * return -EINVAL; + * } + * DEBUG_ROOT_HUB("\n"); + * break; + * case GetHubDescriptor: + * DEBUG_ROOT_HUB("OcteonUSB: GetHubDescriptor\n"); + * desc = (struct usb_hub_descriptor *)buf; + * desc->bDescLength = 9; + * desc->bDescriptorType = 0x29; + * desc->bNbrPorts = 1; + * desc->wHubCharacteristics = 0x08; + * desc->bPwrOn2PwrGood = 1; + * desc->bHubContrCurrent = 0; + * desc->bitmap[0] = 0; + * desc->bitmap[1] = 0xff; + * break; + * case GetHubStatus: + * DEBUG_ROOT_HUB("OcteonUSB: GetHubStatus\n"); + * *(__le32 *)buf = 0; + * break; + * case GetPortStatus: + * DEBUG_ROOT_HUB("OcteonUSB: GetPortStatus"); + * if (wIndex != 1) + * { + * DEBUG_ROOT_HUB(" INVALID\n"); + * return -EINVAL; + * } + * + * usb_port_status = cvmx_usb_get_status(usb); + * port_status = 0; + * + * if (usb_port_status.connect_change) + * { + * port_status |= (1 << USB_PORT_FEAT_C_CONNECTION); + * DEBUG_ROOT_HUB(" C_CONNECTION"); + * } + * + * if (usb_port_status.port_enabled) + * { + * port_status |= (1 << USB_PORT_FEAT_C_ENABLE); + * DEBUG_ROOT_HUB(" C_ENABLE"); + * } + * + * if (usb_port_status.connected) + * { + * port_status |= (1 << USB_PORT_FEAT_CONNECTION); + * DEBUG_ROOT_HUB(" CONNECTION"); + * } + * + * if (usb_port_status.port_enabled) + * { + * port_status |= (1 << USB_PORT_FEAT_ENABLE); + * DEBUG_ROOT_HUB(" ENABLE"); + * } + * + * if (usb_port_status.port_over_current) + * { + * port_status |= (1 << USB_PORT_FEAT_OVER_CURRENT); + * DEBUG_ROOT_HUB(" OVER_CURRENT"); + * } + * + * if (usb_port_status.port_powered) + * { + * port_status |= (1 << USB_PORT_FEAT_POWER); + * DEBUG_ROOT_HUB(" POWER"); + * } + * + * if (usb_port_status.port_speed == CVMX_USB_SPEED_HIGH) + * { + * port_status |= (1 << USB_PORT_FEAT_HIGHSPEED); + * DEBUG_ROOT_HUB(" HIGHSPEED"); + * } + * else if (usb_port_status.port_speed == CVMX_USB_SPEED_LOW) + * { + * port_status |= (1 << USB_PORT_FEAT_LOWSPEED); + * DEBUG_ROOT_HUB(" LOWSPEED"); + * } + * + * *((__le32 *)buf) = cpu_to_le32(port_status); + * DEBUG_ROOT_HUB("\n"); + * break; + * case SetHubFeature: + * DEBUG_ROOT_HUB("OcteonUSB: SetHubFeature\n"); + * // No HUB features supported + * break; + * case SetPortFeature: + * DEBUG_ROOT_HUB("OcteonUSB: SetPortFeature"); + * if (wIndex != 1) + * { + * DEBUG_ROOT_HUB(" INVALID\n"); + * return -EINVAL; + * } + * + * switch (wValue) + * { + * case USB_PORT_FEAT_SUSPEND: + * DEBUG_ROOT_HUB(" SUSPEND\n"); + * return -EINVAL; + * case USB_PORT_FEAT_POWER: + * DEBUG_ROOT_HUB(" POWER\n"); + * return -EINVAL; + * case USB_PORT_FEAT_RESET: + * DEBUG_ROOT_HUB(" RESET\n"); + * local_irq_save(flags); + * cvmx_usb_disable(usb); + * if (cvmx_usb_enable(usb)) + * DEBUG_ERROR("Failed to enable the port\n"); + * local_irq_restore(flags); + * return 0; + * case USB_PORT_FEAT_INDICATOR: + * DEBUG_ROOT_HUB(" INDICATOR\n"); + * // Not supported + * break; + * default: + * DEBUG_ROOT_HUB(" UNKNOWN\n"); + * return -EINVAL; + * } + * break; + * default: + * DEBUG_ROOT_HUB("OcteonUSB: Unknown root hub request\n"); + * return -EINVAL; + * } + * return 0; + * } + * @endcode + * + * <h2>Interrupts</h2> + * + * If you plan on using usb interrupts, cvmx_usb_poll() must be + * called on every usb interrupt. It will read the usb state, + * call any needed callbacks, and schedule transactions as + * needed. Your device driver needs only to hookup an interrupt + * handler and call cvmx_usb_poll(). Octeon's usb port 0 causes + * CIU bit CIU_INT*_SUM0[USB] to be set (bit 56). For port 1, + * CIU bit CIU_INT_SUM1[USB1] is set (bit 17). How these bits + * are turned into interrupt numbers is operating system + * specific. For Linux, there are the convenient defines + * OCTEON_IRQ_USB0 and OCTEON_IRQ_USB1 for the IRQ numbers. + * + * If you aren't using interrupts, simple call cvmx_usb_poll() + * in your main processing loop. + * + * <hr>$Revision: 32636 $<hr> + */ + +#ifndef __CVMX_USB_H__ +#define __CVMX_USB_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * Enumerations representing the status of function calls. + */ +typedef enum +{ + CVMX_USB_SUCCESS = 0, /**< There were no errors */ + CVMX_USB_INVALID_PARAM = -1, /**< A parameter to the function was invalid */ + CVMX_USB_NO_MEMORY = -2, /**< Insufficient resources were available for the request */ + CVMX_USB_BUSY = -3, /**< The resource is busy and cannot service the request */ + CVMX_USB_TIMEOUT = -4, /**< Waiting for an action timed out */ + CVMX_USB_INCORRECT_MODE = -5, /**< The function call doesn't work in the current USB + mode. This happens when host only functions are + called in device mode or vice versa */ +} cvmx_usb_status_t; + +/** + * Enumerations representing the possible USB device speeds + */ +typedef enum +{ + CVMX_USB_SPEED_HIGH = 0, /**< Device is operation at 480Mbps */ + CVMX_USB_SPEED_FULL = 1, /**< Device is operation at 12Mbps */ + CVMX_USB_SPEED_LOW = 2, /**< Device is operation at 1.5Mbps */ +} cvmx_usb_speed_t; + +/** + * Enumeration representing the possible USB transfer types. + */ +typedef enum +{ + CVMX_USB_TRANSFER_CONTROL = 0, /**< USB transfer type control for hub and status transfers */ + CVMX_USB_TRANSFER_ISOCHRONOUS = 1, /**< USB transfer type isochronous for low priority periodic transfers */ + CVMX_USB_TRANSFER_BULK = 2, /**< USB transfer type bulk for large low priority transfers */ + CVMX_USB_TRANSFER_INTERRUPT = 3, /**< USB transfer type interrupt for high priority periodic transfers */ +} cvmx_usb_transfer_t; + +/** + * Enumeration of the transfer directions + */ +typedef enum +{ + CVMX_USB_DIRECTION_OUT, /**< Data is transferring from Octeon to the device/host */ + CVMX_USB_DIRECTION_IN, /**< Data is transferring from the device/host to Octeon */ +} cvmx_usb_direction_t; + +/** + * Enumeration of all possible status codes passed to callback + * functions. + */ +typedef enum +{ + CVMX_USB_COMPLETE_SUCCESS, /**< The transaction / operation finished without any errors */ + CVMX_USB_COMPLETE_SHORT, /**< FIXME: This is currently not implemented */ + CVMX_USB_COMPLETE_CANCEL, /**< The transaction was canceled while in flight by a user call to cvmx_usb_cancel* */ + CVMX_USB_COMPLETE_ERROR, /**< The transaction aborted with an unexpected error status */ + CVMX_USB_COMPLETE_STALL, /**< The transaction received a USB STALL response from the device */ + CVMX_USB_COMPLETE_XACTERR, /**< The transaction failed with an error from the device even after a number of retries */ + CVMX_USB_COMPLETE_DATATGLERR, /**< The transaction failed with a data toggle error even after a number of retries */ + CVMX_USB_COMPLETE_BABBLEERR, /**< The transaction failed with a babble error */ + CVMX_USB_COMPLETE_FRAMEERR, /**< The transaction failed with a frame error even after a number of retries */ +} cvmx_usb_complete_t; + +/** + * Structure returned containing the USB port status information. + */ +typedef struct +{ + uint32_t reserved : 25; + uint32_t port_enabled : 1; /**< 1 = Usb port is enabled, 0 = disabled */ + uint32_t port_over_current : 1; /**< 1 = Over current detected, 0 = Over current not detected. Octeon doesn't support over current detection */ + uint32_t port_powered : 1; /**< 1 = Port power is being supplied to the device, 0 = power is off. Octeon doesn't support turning port power off */ + cvmx_usb_speed_t port_speed : 2; /**< Current port speed */ + uint32_t connected : 1; /**< 1 = A device is connected to the port, 0 = No device is connected */ + uint32_t connect_change : 1; /**< 1 = Device connected state changed since the last set status call */ +} cvmx_usb_port_status_t; + +/** + * This is the structure of a Control packet header + */ +typedef union +{ + uint64_t u64; + struct + { + uint64_t request_type : 8; /**< Bit 7 tells the direction: 1=IN, 0=OUT */ + uint64_t request : 8; /**< The standard usb request to make */ + uint64_t value : 16; /**< Value parameter for the request in little endian format */ + uint64_t index : 16; /**< Index for the request in little endian format */ + uint64_t length : 16; /**< Length of the data associated with this request in little endian format */ + } s; +} cvmx_usb_control_header_t; + +/** + * Descriptor for Isochronous packets + */ +typedef struct +{ + int offset; /**< This is the offset in bytes into the main buffer where this data is stored */ + int length; /**< This is the length in bytes of the data */ + cvmx_usb_complete_t status; /**< This is the status of this individual packet transfer */ +} cvmx_usb_iso_packet_t; + +/** + * Possible callback reasons for the USB API. + */ +typedef enum +{ + CVMX_USB_CALLBACK_TRANSFER_COMPLETE, + /**< A callback of this type is called when a submitted transfer + completes. The completion callback will be called even if the + transfer fails or is canceled. The status parameter will + contain details of why he callback was called. */ + CVMX_USB_CALLBACK_PORT_CHANGED, /**< The status of the port changed. For example, someone may have + plugged a device in. The status parameter contains + CVMX_USB_COMPLETE_SUCCESS. Use cvmx_usb_get_status() to get + the new port status. */ + __CVMX_USB_CALLBACK_END /**< Do not use. Used internally for array bounds */ +} cvmx_usb_callback_t; + +/** + * USB state internal data. The contents of this structure + * may change in future SDKs. No data in it should be referenced + * by user's of this API. + */ +typedef struct +{ + char data[65536]; +} cvmx_usb_state_t; + +/** + * USB callback functions are always of the following type. + * The parameters are as follows: + * - state = USB device state populated by + * cvmx_usb_initialize(). + * - reason = The cvmx_usb_callback_t used to register + * the callback. + * - status = The cvmx_usb_complete_t representing the + * status code of a transaction. + * - pipe_handle = The Pipe that caused this callback, or + * -1 if this callback wasn't associated with a pipe. + * - submit_handle = Transfer submit handle causing this + * callback, or -1 if this callback wasn't associated + * with a transfer. + * - Actual number of bytes transfer. + * - user_data = The user pointer supplied to the + * function cvmx_usb_submit() or + * cvmx_usb_register_callback() */ +typedef void (*cvmx_usb_callback_func_t)(cvmx_usb_state_t *state, + cvmx_usb_callback_t reason, + cvmx_usb_complete_t status, + int pipe_handle, int submit_handle, + int bytes_transferred, void *user_data); + +/** + * Flags to pass the initialization function. + */ +typedef enum +{ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_XI = 1<<0, /**< The USB port uses a 12MHz crystal as clock source + at USB_XO and USB_XI. */ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_XO_GND = 1<<1, /**< The USB port uses 12/24/48MHz 2.5V board clock + source at USB_XO. USB_XI should be tied to GND.*/ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_AUTO = 0, /**< Automatically determine clock type based on function + in cvmx-helper-board.c. */ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_MHZ_MASK = 3<<3, /**< Mask for clock speed field */ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_12MHZ = 1<<3, /**< Speed of reference clock or crystal */ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_24MHZ = 2<<3, /**< Speed of reference clock */ + CVMX_USB_INITIALIZE_FLAGS_CLOCK_48MHZ = 3<<3, /**< Speed of reference clock */ + /* Bits 3-4 used to encode the clock frequency */ + CVMX_USB_INITIALIZE_FLAGS_NO_DMA = 1<<5, /**< Disable DMA and used polled IO for data transfer use for the USB */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS = 1<<16, /**< Enable extra console output for debugging USB transfers */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLBACKS = 1<<17, /**< Enable extra console output for debugging USB callbacks */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_INFO = 1<<18, /**< Enable extra console output for USB informational data */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_CALLS = 1<<19, /**< Enable extra console output for every function call */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_CSRS = 1<<20, /**< Enable extra console output for every CSR access */ + CVMX_USB_INITIALIZE_FLAGS_DEBUG_ALL = ((CVMX_USB_INITIALIZE_FLAGS_DEBUG_CSRS<<1)-1) - (CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS-1), +} cvmx_usb_initialize_flags_t; + +/** + * Flags for passing when a pipe is created. Currently no flags + * need to be passed. + */ +typedef enum +{ + CVMX_USB_PIPE_FLAGS_DEBUG_TRANSFERS = 1<<15,/**< Used to display CVMX_USB_INITIALIZE_FLAGS_DEBUG_TRANSFERS for a specific pipe only */ + __CVMX_USB_PIPE_FLAGS_OPEN = 1<<16, /**< Used internally to determine if a pipe is open. Do not use */ + __CVMX_USB_PIPE_FLAGS_SCHEDULED = 1<<17, /**< Used internally to determine if a pipe is actively using hardware. Do not use */ + __CVMX_USB_PIPE_FLAGS_NEED_PING = 1<<18, /**< Used internally to determine if a high speed pipe is in the ping state. Do not use */ +} cvmx_usb_pipe_flags_t; + +/** + * Return the number of USB ports supported by this Octeon + * chip. If the chip doesn't support USB, or is not supported + * by this API, a zero will be returned. Most Octeon chips + * support one usb port, but some support two ports. + * cvmx_usb_initialize() must be called on independent + * cvmx_usb_state_t structures. + * + * @return Number of port, zero if usb isn't supported + */ +extern int cvmx_usb_get_num_ports(void); + +/** + * Initialize a USB port for use. This must be called before any + * other access to the Octeon USB port is made. The port starts + * off in the disabled state. + * + * @param state Pointer to an empty cvmx_usb_state_t structure + * that will be populated by the initialize call. + * This structure is then passed to all other USB + * functions. + * @param usb_port_number + * Which Octeon USB port to initialize. + * @param flags Flags to control hardware initialization. See + * cvmx_usb_initialize_flags_t for the flag + * definitions. Some flags are mandatory. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_initialize(cvmx_usb_state_t *state, + int usb_port_number, + cvmx_usb_initialize_flags_t flags); + +/** + * Shutdown a USB port after a call to cvmx_usb_initialize(). + * The port should be disabled with all pipes closed when this + * function is called. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_shutdown(cvmx_usb_state_t *state); + +/** + * Enable a USB port. After this call succeeds, the USB port is + * online and servicing requests. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_enable(cvmx_usb_state_t *state); + +/** + * Disable a USB port. After this call the USB port will not + * generate data transfers and will not generate events. + * Transactions in process will fail and call their + * associated callbacks. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_disable(cvmx_usb_state_t *state); + +/** + * Get the current state of the USB port. Use this call to + * determine if the usb port has anything connected, is enabled, + * or has some sort of error condition. The return value of this + * call has "changed" bits to signal of the value of some fields + * have changed between calls. These "changed" fields are based + * on the last call to cvmx_usb_set_status(). In order to clear + * them, you must update the status through cvmx_usb_set_status(). + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return Port status information + */ +extern cvmx_usb_port_status_t cvmx_usb_get_status(cvmx_usb_state_t *state); + +/** + * Set the current state of the USB port. The status is used as + * a reference for the "changed" bits returned by + * cvmx_usb_get_status(). Other than serving as a reference, the + * status passed to this function is not used. No fields can be + * changed through this call. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param port_status + * Port status to set, most like returned by cvmx_usb_get_status() + */ +extern void cvmx_usb_set_status(cvmx_usb_state_t *state, cvmx_usb_port_status_t port_status); + +/** + * Open a virtual pipe between the host and a USB device. A pipe + * must be opened before data can be transferred between a device + * and Octeon. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param flags Optional pipe flags defined in + * cvmx_usb_pipe_flags_t. + * @param device_addr + * USB device address to open the pipe to + * (0-127). + * @param endpoint_num + * USB endpoint number to open the pipe to + * (0-15). + * @param device_speed + * The speed of the device the pipe is going + * to. This must match the device's speed, + * which may be different than the port speed. + * @param max_packet The maximum packet length the device can + * transmit/receive (low speed=0-8, full + * speed=0-1023, high speed=0-1024). This value + * comes from the standard endpoint descriptor + * field wMaxPacketSize bits <10:0>. + * @param transfer_type + * The type of transfer this pipe is for. + * @param transfer_dir + * The direction the pipe is in. This is not + * used for control pipes. + * @param interval For ISOCHRONOUS and INTERRUPT transfers, + * this is how often the transfer is scheduled + * for. All other transfers should specify + * zero. The units are in frames (8000/sec at + * high speed, 1000/sec for full speed). + * @param multi_count + * For high speed devices, this is the maximum + * allowed number of packet per microframe. + * Specify zero for non high speed devices. This + * value comes from the standard endpoint descriptor + * field wMaxPacketSize bits <12:11>. + * @param hub_device_addr + * Hub device address this device is connected + * to. Devices connected directly to Octeon + * use zero. This is only used when the device + * is full/low speed behind a high speed hub. + * The address will be of the high speed hub, + * not and full speed hubs after it. + * @param hub_port Which port on the hub the device is + * connected. Use zero for devices connected + * directly to Octeon. Like hub_device_addr, + * this is only used for full/low speed + * devices behind a high speed hub. + * + * @return A non negative value is a pipe handle. Negative + * values are failure codes from cvmx_usb_status_t. + */ +extern int cvmx_usb_open_pipe(cvmx_usb_state_t *state, + cvmx_usb_pipe_flags_t flags, + int device_addr, int endpoint_num, + cvmx_usb_speed_t device_speed, int max_packet, + cvmx_usb_transfer_t transfer_type, + cvmx_usb_direction_t transfer_dir, int interval, + int multi_count, int hub_device_addr, + int hub_port); + +/** + * Call to submit a USB Bulk transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +extern int cvmx_usb_submit_bulk(cvmx_usb_state_t *state, int pipe_handle, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data); + +/** + * Call to submit a USB Interrupt transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +extern int cvmx_usb_submit_interrupt(cvmx_usb_state_t *state, int pipe_handle, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data); + +/** + * Call to submit a USB Control transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param control_header + * USB 8 byte control header physical address. + * Note that this is NOT A POINTER, but the + * full 64bit physical address of the buffer. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +extern int cvmx_usb_submit_control(cvmx_usb_state_t *state, int pipe_handle, + uint64_t control_header, + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data); + +/** + * Flags to pass the cvmx_usb_submit_isochronous() function. + */ +typedef enum +{ + CVMX_USB_ISOCHRONOUS_FLAGS_ALLOW_SHORT = 1<<0, /**< Do not return an error if a transfer is less than the maximum packet size of the device */ + CVMX_USB_ISOCHRONOUS_FLAGS_ASAP = 1<<1, /**< Schedule the transaction as soon as possible */ +} cvmx_usb_isochronous_flags_t; + +/** + * Call to submit a USB Isochronous transfer to a pipe. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Handle to the pipe for the transfer. + * @param start_frame + * Number of frames into the future to schedule + * this transaction. + * @param flags Flags to control the transfer. See + * cvmx_usb_isochronous_flags_t for the flag + * definitions. + * @param number_packets + * Number of sequential packets to transfer. + * "packets" is a pointer to an array of this + * many packet structures. + * @param packets Description of each transfer packet as + * defined by cvmx_usb_iso_packet_t. The array + * pointed to here must stay valid until the + * complete callback is called. + * @param buffer Physical address of the data buffer in + * memory. Note that this is NOT A POINTER, but + * the full 64bit physical address of the + * buffer. This may be zero if buffer_length is + * zero. + * @param buffer_length + * Length of buffer in bytes. + * @param callback Function to call when this transaction + * completes. If the return value of this + * function isn't an error, then this function + * is guaranteed to be called when the + * transaction completes. If this parameter is + * NULL, then the generic callback registered + * through cvmx_usb_register_callback is + * called. If both are NULL, then there is no + * way to know when a transaction completes. + * @param user_data User supplied data returned when the + * callback is called. This is only used if + * callback in not NULL. + * + * @return A submitted transaction handle or negative on + * failure. Negative values are failure codes from + * cvmx_usb_status_t. + */ +extern int cvmx_usb_submit_isochronous(cvmx_usb_state_t *state, int pipe_handle, + int start_frame, int flags, + int number_packets, + cvmx_usb_iso_packet_t packets[], + uint64_t buffer, int buffer_length, + cvmx_usb_callback_func_t callback, + void *user_data); + +/** + * Cancel one outstanding request in a pipe. Canceling a request + * can fail if the transaction has already completed before cancel + * is called. Even after a successful cancel call, it may take + * a frame or two for the cvmx_usb_poll() function to call the + * associated callback. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to cancel requests in. + * @param submit_handle + * Handle to transaction to cancel, returned by the submit function. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_cancel(cvmx_usb_state_t *state, + int pipe_handle, int submit_handle); + + +/** + * Cancel all outstanding requests in a pipe. Logically all this + * does is call cvmx_usb_cancel() in a loop. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to cancel requests in. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_cancel_all(cvmx_usb_state_t *state, + int pipe_handle); + +/** + * Close a pipe created with cvmx_usb_open_pipe(). + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param pipe_handle + * Pipe handle to close. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. CVMX_USB_BUSY is returned if the + * pipe has outstanding transfers. + */ +extern cvmx_usb_status_t cvmx_usb_close_pipe(cvmx_usb_state_t *state, + int pipe_handle); + +/** + * Register a function to be called when various USB events occur. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * @param reason Which event to register for. + * @param callback Function to call when the event occurs. + * @param user_data User data parameter to the function. + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_register_callback(cvmx_usb_state_t *state, + cvmx_usb_callback_t reason, + cvmx_usb_callback_func_t callback, + void *user_data); + +/** + * Get the current USB protocol level frame number. The frame + * number is always in the range of 0-0x7ff. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return USB frame number + */ +extern int cvmx_usb_get_frame_number(cvmx_usb_state_t *state); + +/** + * Poll the USB block for status and call all needed callback + * handlers. This function is meant to be called in the interrupt + * handler for the USB controller. It can also be called + * periodically in a loop for non-interrupt based operation. + * + * @param state USB device state populated by + * cvmx_usb_initialize(). + * + * @return CVMX_USB_SUCCESS or a negative error code defined in + * cvmx_usb_status_t. + */ +extern cvmx_usb_status_t cvmx_usb_poll(cvmx_usb_state_t *state); + +#ifdef __cplusplus +} +#endif + +#endif /* __CVMX_USB_H__ */ diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbcx-defs.h b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbcx-defs.h new file mode 100644 index 0000000000..394e84662c --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbcx-defs.h @@ -0,0 +1,1551 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This Software, including technical data, may be subject to U.S. export + * control laws, including the U.S. Export Administration Act and its associated + * regulations, and may be subject to export or import regulations in other + * countries. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR + * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO + * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION + * OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM + * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, + * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF + * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR + * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR + * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + ***********************license end**************************************/ + + +/** + * cvmx-usbcx-defs.h + * + * Configuration and status register (CSR) type definitions for + * Octeon usbcx. + * + */ +#ifndef __CVMX_USBCX_TYPEDEFS_H__ +#define __CVMX_USBCX_TYPEDEFS_H__ + +#define CVMX_USBCXBASE 0x00016F0010000000ull +#define CVMX_USBCXREG1(reg, bid) \ + (CVMX_ADD_IO_SEG(CVMX_USBCXBASE | reg) + \ + ((bid) & 1) * 0x100000000000ull) +#define CVMX_USBCXREG2(reg, bid, off) \ + (CVMX_ADD_IO_SEG(CVMX_USBCXBASE | reg) + \ + (((off) & 7) + ((bid) & 1) * 0x8000000000ull) * 32) + +#define CVMX_USBCX_GAHBCFG(bid) CVMX_USBCXREG1(0x008, bid) +#define CVMX_USBCX_GHWCFG3(bid) CVMX_USBCXREG1(0x04c, bid) +#define CVMX_USBCX_GINTMSK(bid) CVMX_USBCXREG1(0x018, bid) +#define CVMX_USBCX_GINTSTS(bid) CVMX_USBCXREG1(0x014, bid) +#define CVMX_USBCX_GNPTXFSIZ(bid) CVMX_USBCXREG1(0x028, bid) +#define CVMX_USBCX_GNPTXSTS(bid) CVMX_USBCXREG1(0x02c, bid) +#define CVMX_USBCX_GOTGCTL(bid) CVMX_USBCXREG1(0x000, bid) +#define CVMX_USBCX_GRSTCTL(bid) CVMX_USBCXREG1(0x010, bid) +#define CVMX_USBCX_GRXFSIZ(bid) CVMX_USBCXREG1(0x024, bid) +#define CVMX_USBCX_GRXSTSPH(bid) CVMX_USBCXREG1(0x020, bid) +#define CVMX_USBCX_GUSBCFG(bid) CVMX_USBCXREG1(0x00c, bid) +#define CVMX_USBCX_HAINT(bid) CVMX_USBCXREG1(0x414, bid) +#define CVMX_USBCX_HAINTMSK(bid) CVMX_USBCXREG1(0x418, bid) +#define CVMX_USBCX_HCCHARX(off, bid) CVMX_USBCXREG2(0x500, bid, off) +#define CVMX_USBCX_HCFG(bid) CVMX_USBCXREG1(0x400, bid) +#define CVMX_USBCX_HCINTMSKX(off, bid) CVMX_USBCXREG2(0x50c, bid, off) +#define CVMX_USBCX_HCINTX(off, bid) CVMX_USBCXREG2(0x508, bid, off) +#define CVMX_USBCX_HCSPLTX(off, bid) CVMX_USBCXREG2(0x504, bid, off) +#define CVMX_USBCX_HCTSIZX(off, bid) CVMX_USBCXREG2(0x510, bid, off) +#define CVMX_USBCX_HFIR(bid) CVMX_USBCXREG1(0x404, bid) +#define CVMX_USBCX_HFNUM(bid) CVMX_USBCXREG1(0x408, bid) +#define CVMX_USBCX_HPRT(bid) CVMX_USBCXREG1(0x440, bid) +#define CVMX_USBCX_HPTXFSIZ(bid) CVMX_USBCXREG1(0x100, bid) +#define CVMX_USBCX_HPTXSTS(bid) CVMX_USBCXREG1(0x410, bid) + +/** + * cvmx_usbc#_gahbcfg + * + * Core AHB Configuration Register (GAHBCFG) + * + * This register can be used to configure the core after power-on or a change in + * mode of operation. This register mainly contains AHB system-related + * configuration parameters. The AHB is the processor interface to the O2P USB + * core. In general, software need not know about this interface except to + * program the values as specified. + * + * The application must program this register as part of the O2P USB core + * initialization. Do not change this register after the initial programming. + */ +union cvmx_usbcx_gahbcfg { + uint32_t u32; + /** + * struct cvmx_usbcx_gahbcfg_s + * @ptxfemplvl: Periodic TxFIFO Empty Level (PTxFEmpLvl) + * Software should set this bit to 0x1. + * Indicates when the Periodic TxFIFO Empty Interrupt bit in the + * Core Interrupt register (GINTSTS.PTxFEmp) is triggered. This + * bit is used only in Slave mode. + * * 1'b0: GINTSTS.PTxFEmp interrupt indicates that the Periodic + * TxFIFO is half empty + * * 1'b1: GINTSTS.PTxFEmp interrupt indicates that the Periodic + * TxFIFO is completely empty + * @nptxfemplvl: Non-Periodic TxFIFO Empty Level (NPTxFEmpLvl) + * Software should set this bit to 0x1. + * Indicates when the Non-Periodic TxFIFO Empty Interrupt bit in + * the Core Interrupt register (GINTSTS.NPTxFEmp) is triggered. + * This bit is used only in Slave mode. + * * 1'b0: GINTSTS.NPTxFEmp interrupt indicates that the Non- + * Periodic TxFIFO is half empty + * * 1'b1: GINTSTS.NPTxFEmp interrupt indicates that the Non- + * Periodic TxFIFO is completely empty + * @dmaen: DMA Enable (DMAEn) + * * 1'b0: Core operates in Slave mode + * * 1'b1: Core operates in a DMA mode + * @hbstlen: Burst Length/Type (HBstLen) + * This field has not effect and should be left as 0x0. + * @glblintrmsk: Global Interrupt Mask (GlblIntrMsk) + * Software should set this field to 0x1. + * The application uses this bit to mask or unmask the interrupt + * line assertion to itself. Irrespective of this bit's setting, + * the interrupt status registers are updated by the core. + * * 1'b0: Mask the interrupt assertion to the application. + * * 1'b1: Unmask the interrupt assertion to the application. + */ + struct cvmx_usbcx_gahbcfg_s { + uint32_t reserved_9_31 : 23; + uint32_t ptxfemplvl : 1; + uint32_t nptxfemplvl : 1; + uint32_t reserved_6_6 : 1; + uint32_t dmaen : 1; + uint32_t hbstlen : 4; + uint32_t glblintrmsk : 1; + } s; +}; +typedef union cvmx_usbcx_gahbcfg cvmx_usbcx_gahbcfg_t; + +/** + * cvmx_usbc#_ghwcfg3 + * + * User HW Config3 Register (GHWCFG3) + * + * This register contains the configuration options of the O2P USB core. + */ +union cvmx_usbcx_ghwcfg3 { + uint32_t u32; + /** + * struct cvmx_usbcx_ghwcfg3_s + * @dfifodepth: DFIFO Depth (DfifoDepth) + * This value is in terms of 32-bit words. + * * Minimum value is 32 + * * Maximum value is 32768 + * @ahbphysync: AHB and PHY Synchronous (AhbPhySync) + * Indicates whether AHB and PHY clocks are synchronous to + * each other. + * * 1'b0: No + * * 1'b1: Yes + * This bit is tied to 1. + * @rsttype: Reset Style for Clocked always Blocks in RTL (RstType) + * * 1'b0: Asynchronous reset is used in the core + * * 1'b1: Synchronous reset is used in the core + * @optfeature: Optional Features Removed (OptFeature) + * Indicates whether the User ID register, GPIO interface ports, + * and SOF toggle and counter ports were removed for gate count + * optimization. + * @vendor_control_interface_support: Vendor Control Interface Support + * * 1'b0: Vendor Control Interface is not available on the core. + * * 1'b1: Vendor Control Interface is available. + * @i2c_selection: I2C Selection + * * 1'b0: I2C Interface is not available on the core. + * * 1'b1: I2C Interface is available on the core. + * @otgen: OTG Function Enabled (OtgEn) + * The application uses this bit to indicate the O2P USB core's + * OTG capabilities. + * * 1'b0: Not OTG capable + * * 1'b1: OTG Capable + * @pktsizewidth: Width of Packet Size Counters (PktSizeWidth) + * * 3'b000: 4 bits + * * 3'b001: 5 bits + * * 3'b010: 6 bits + * * 3'b011: 7 bits + * * 3'b100: 8 bits + * * 3'b101: 9 bits + * * 3'b110: 10 bits + * * Others: Reserved + * @xfersizewidth: Width of Transfer Size Counters (XferSizeWidth) + * * 4'b0000: 11 bits + * * 4'b0001: 12 bits + * - ... + * * 4'b1000: 19 bits + * * Others: Reserved + */ + struct cvmx_usbcx_ghwcfg3_s { + uint32_t dfifodepth : 16; + uint32_t reserved_13_15 : 3; + uint32_t ahbphysync : 1; + uint32_t rsttype : 1; + uint32_t optfeature : 1; + uint32_t vendor_control_interface_support : 1; + uint32_t i2c_selection : 1; + uint32_t otgen : 1; + uint32_t pktsizewidth : 3; + uint32_t xfersizewidth : 4; + } s; +}; +typedef union cvmx_usbcx_ghwcfg3 cvmx_usbcx_ghwcfg3_t; + +/** + * cvmx_usbc#_gintmsk + * + * Core Interrupt Mask Register (GINTMSK) + * + * This register works with the Core Interrupt register to interrupt the + * application. When an interrupt bit is masked, the interrupt associated with + * that bit will not be generated. However, the Core Interrupt (GINTSTS) + * register bit corresponding to that interrupt will still be set. + * Mask interrupt: 1'b0, Unmask interrupt: 1'b1 + */ +union cvmx_usbcx_gintmsk { + uint32_t u32; + /** + * struct cvmx_usbcx_gintmsk_s + * @wkupintmsk: Resume/Remote Wakeup Detected Interrupt Mask + * (WkUpIntMsk) + * @sessreqintmsk: Session Request/New Session Detected Interrupt Mask + * (SessReqIntMsk) + * @disconnintmsk: Disconnect Detected Interrupt Mask (DisconnIntMsk) + * @conidstschngmsk: Connector ID Status Change Mask (ConIDStsChngMsk) + * @ptxfempmsk: Periodic TxFIFO Empty Mask (PTxFEmpMsk) + * @hchintmsk: Host Channels Interrupt Mask (HChIntMsk) + * @prtintmsk: Host Port Interrupt Mask (PrtIntMsk) + * @fetsuspmsk: Data Fetch Suspended Mask (FetSuspMsk) + * @incomplpmsk: Incomplete Periodic Transfer Mask (incomplPMsk) + * Incomplete Isochronous OUT Transfer Mask + * (incompISOOUTMsk) + * @incompisoinmsk: Incomplete Isochronous IN Transfer Mask + * (incompISOINMsk) + * @oepintmsk: OUT Endpoints Interrupt Mask (OEPIntMsk) + * @inepintmsk: IN Endpoints Interrupt Mask (INEPIntMsk) + * @epmismsk: Endpoint Mismatch Interrupt Mask (EPMisMsk) + * @eopfmsk: End of Periodic Frame Interrupt Mask (EOPFMsk) + * @isooutdropmsk: Isochronous OUT Packet Dropped Interrupt Mask + * (ISOOutDropMsk) + * @enumdonemsk: Enumeration Done Mask (EnumDoneMsk) + * @usbrstmsk: USB Reset Mask (USBRstMsk) + * @usbsuspmsk: USB Suspend Mask (USBSuspMsk) + * @erlysuspmsk: Early Suspend Mask (ErlySuspMsk) + * @i2cint: I2C Interrupt Mask (I2CINT) + * @ulpickintmsk: ULPI Carkit Interrupt Mask (ULPICKINTMsk) + * I2C Carkit Interrupt Mask (I2CCKINTMsk) + * @goutnakeffmsk: Global OUT NAK Effective Mask (GOUTNakEffMsk) + * @ginnakeffmsk: Global Non-Periodic IN NAK Effective Mask + * (GINNakEffMsk) + * @nptxfempmsk: Non-Periodic TxFIFO Empty Mask (NPTxFEmpMsk) + * @rxflvlmsk: Receive FIFO Non-Empty Mask (RxFLvlMsk) + * @sofmsk: Start of (micro)Frame Mask (SofMsk) + * @otgintmsk: OTG Interrupt Mask (OTGIntMsk) + * @modemismsk: Mode Mismatch Interrupt Mask (ModeMisMsk) + */ + struct cvmx_usbcx_gintmsk_s { + uint32_t wkupintmsk : 1; + uint32_t sessreqintmsk : 1; + uint32_t disconnintmsk : 1; + uint32_t conidstschngmsk : 1; + uint32_t reserved_27_27 : 1; + uint32_t ptxfempmsk : 1; + uint32_t hchintmsk : 1; + uint32_t prtintmsk : 1; + uint32_t reserved_23_23 : 1; + uint32_t fetsuspmsk : 1; + uint32_t incomplpmsk : 1; + uint32_t incompisoinmsk : 1; + uint32_t oepintmsk : 1; + uint32_t inepintmsk : 1; + uint32_t epmismsk : 1; + uint32_t reserved_16_16 : 1; + uint32_t eopfmsk : 1; + uint32_t isooutdropmsk : 1; + uint32_t enumdonemsk : 1; + uint32_t usbrstmsk : 1; + uint32_t usbsuspmsk : 1; + uint32_t erlysuspmsk : 1; + uint32_t i2cint : 1; + uint32_t ulpickintmsk : 1; + uint32_t goutnakeffmsk : 1; + uint32_t ginnakeffmsk : 1; + uint32_t nptxfempmsk : 1; + uint32_t rxflvlmsk : 1; + uint32_t sofmsk : 1; + uint32_t otgintmsk : 1; + uint32_t modemismsk : 1; + uint32_t reserved_0_0 : 1; + } s; +}; +typedef union cvmx_usbcx_gintmsk cvmx_usbcx_gintmsk_t; + +/** + * cvmx_usbc#_gintsts + * + * Core Interrupt Register (GINTSTS) + * + * This register interrupts the application for system-level events in the + * current mode of operation (Device mode or Host mode). It is shown in + * Interrupt. Some of the bits in this register are valid only in Host mode, + * while others are valid in Device mode only. This register also indicates the + * current mode of operation. In order to clear the interrupt status bits of + * type R_SS_WC, the application must write 1'b1 into the bit. The FIFO status + * interrupts are read only; once software reads from or writes to the FIFO + * while servicing these interrupts, FIFO interrupt conditions are cleared + * automatically. + */ +union cvmx_usbcx_gintsts { + uint32_t u32; + /** + * struct cvmx_usbcx_gintsts_s + * @wkupint: Resume/Remote Wakeup Detected Interrupt (WkUpInt) + * In Device mode, this interrupt is asserted when a resume is + * detected on the USB. In Host mode, this interrupt is asserted + * when a remote wakeup is detected on the USB. + * For more information on how to use this interrupt, see "Partial + * Power-Down and Clock Gating Programming Model" on + * page 353. + * @sessreqint: Session Request/New Session Detected Interrupt + * (SessReqInt) + * In Host mode, this interrupt is asserted when a session request + * is detected from the device. In Device mode, this interrupt is + * asserted when the utmiotg_bvalid signal goes high. + * For more information on how to use this interrupt, see "Partial + * Power-Down and Clock Gating Programming Model" on + * page 353. + * @disconnint: Disconnect Detected Interrupt (DisconnInt) + * Asserted when a device disconnect is detected. + * @conidstschng: Connector ID Status Change (ConIDStsChng) + * The core sets this bit when there is a change in connector ID + * status. + * @ptxfemp: Periodic TxFIFO Empty (PTxFEmp) + * Asserted when the Periodic Transmit FIFO is either half or + * completely empty and there is space for at least one entry to be + * written in the Periodic Request Queue. The half or completely + * empty status is determined by the Periodic TxFIFO Empty Level + * bit in the Core AHB Configuration register + * (GAHBCFG.PTxFEmpLvl). + * @hchint: Host Channels Interrupt (HChInt) + * The core sets this bit to indicate that an interrupt is pending + * on one of the channels of the core (in Host mode). The + * application must read the Host All Channels Interrupt (HAINT) + * register to determine the exact number of the channel on which + * the interrupt occurred, and then read the corresponding Host + * Channel-n Interrupt (HCINTn) register to determine the exact + * cause of the interrupt. The application must clear the + * appropriate status bit in the HCINTn register to clear this bit. + * @prtint: Host Port Interrupt (PrtInt) + * The core sets this bit to indicate a change in port status of + * one of the O2P USB core ports in Host mode. The application must + * read the Host Port Control and Status (HPRT) register to + * determine the exact event that caused this interrupt. The + * application must clear the appropriate status bit in the Host + * Port Control and Status register to clear this bit. + * @fetsusp: Data Fetch Suspended (FetSusp) + * This interrupt is valid only in DMA mode. This interrupt + * indicates that the core has stopped fetching data for IN + * endpoints due to the unavailability of TxFIFO space or Request + * Queue space. This interrupt is used by the application for an + * endpoint mismatch algorithm. + * @incomplp: Incomplete Periodic Transfer (incomplP) + * In Host mode, the core sets this interrupt bit when there are + * incomplete periodic transactions still pending which are + * scheduled for the current microframe. + * Incomplete Isochronous OUT Transfer (incompISOOUT) + * The Device mode, the core sets this interrupt to indicate that + * there is at least one isochronous OUT endpoint on which the + * transfer is not completed in the current microframe. This + * interrupt is asserted along with the End of Periodic Frame + * Interrupt (EOPF) bit in this register. + * @incompisoin: Incomplete Isochronous IN Transfer (incompISOIN) + * The core sets this interrupt to indicate that there is at least + * one isochronous IN endpoint on which the transfer is not + * completed in the current microframe. This interrupt is asserted + * along with the End of Periodic Frame Interrupt (EOPF) bit in + * this register. + * @oepint: OUT Endpoints Interrupt (OEPInt) + * The core sets this bit to indicate that an interrupt is pending + * on one of the OUT endpoints of the core (in Device mode). The + * application must read the Device All Endpoints Interrupt + * (DAINT) register to determine the exact number of the OUT + * endpoint on which the interrupt occurred, and then read the + * corresponding Device OUT Endpoint-n Interrupt (DOEPINTn) + * register to determine the exact cause of the interrupt. The + * application must clear the appropriate status bit in the + * corresponding DOEPINTn register to clear this bit. + * @iepint: IN Endpoints Interrupt (IEPInt) + * The core sets this bit to indicate that an interrupt is pending + * on one of the IN endpoints of the core (in Device mode). The + * application must read the Device All Endpoints Interrupt + * (DAINT) register to determine the exact number of the IN + * endpoint on which the interrupt occurred, and then read the + * corresponding Device IN Endpoint-n Interrupt (DIEPINTn) + * register to determine the exact cause of the interrupt. The + * application must clear the appropriate status bit in the + * corresponding DIEPINTn register to clear this bit. + * @epmis: Endpoint Mismatch Interrupt (EPMis) + * Indicates that an IN token has been received for a non-periodic + * endpoint, but the data for another endpoint is present in the + * top of the Non-Periodic Transmit FIFO and the IN endpoint + * mismatch count programmed by the application has expired. + * @eopf: End of Periodic Frame Interrupt (EOPF) + * Indicates that the period specified in the Periodic Frame + * Interval field of the Device Configuration register + * (DCFG.PerFrInt) has been reached in the current microframe. + * @isooutdrop: Isochronous OUT Packet Dropped Interrupt (ISOOutDrop) + * The core sets this bit when it fails to write an isochronous OUT + * packet into the RxFIFO because the RxFIFO doesn't have + * enough space to accommodate a maximum packet size packet + * for the isochronous OUT endpoint. + * @enumdone: Enumeration Done (EnumDone) + * The core sets this bit to indicate that speed enumeration is + * complete. The application must read the Device Status (DSTS) + * register to obtain the enumerated speed. + * @usbrst: USB Reset (USBRst) + * The core sets this bit to indicate that a reset is detected on + * the USB. + * @usbsusp: USB Suspend (USBSusp) + * The core sets this bit to indicate that a suspend was detected + * on the USB. The core enters the Suspended state when there + * is no activity on the phy_line_state_i signal for an extended + * period of time. + * @erlysusp: Early Suspend (ErlySusp) + * The core sets this bit to indicate that an Idle state has been + * detected on the USB for 3 ms. + * @i2cint: I2C Interrupt (I2CINT) + * This bit is always 0x0. + * @ulpickint: ULPI Carkit Interrupt (ULPICKINT) + * This bit is always 0x0. + * @goutnakeff: Global OUT NAK Effective (GOUTNakEff) + * Indicates that the Set Global OUT NAK bit in the Device Control + * register (DCTL.SGOUTNak), set by the application, has taken + * effect in the core. This bit can be cleared by writing the Clear + * Global OUT NAK bit in the Device Control register + * (DCTL.CGOUTNak). + * @ginnakeff: Global IN Non-Periodic NAK Effective (GINNakEff) + * Indicates that the Set Global Non-Periodic IN NAK bit in the + * Device Control register (DCTL.SGNPInNak), set by the + * application, has taken effect in the core. That is, the core has + * sampled the Global IN NAK bit set by the application. This bit + * can be cleared by clearing the Clear Global Non-Periodic IN + * NAK bit in the Device Control register (DCTL.CGNPInNak). + * This interrupt does not necessarily mean that a NAK handshake + * is sent out on the USB. The STALL bit takes precedence over + * the NAK bit. + * @nptxfemp: Non-Periodic TxFIFO Empty (NPTxFEmp) + * This interrupt is asserted when the Non-Periodic TxFIFO is + * either half or completely empty, and there is space for at least + * one entry to be written to the Non-Periodic Transmit Request + * Queue. The half or completely empty status is determined by + * the Non-Periodic TxFIFO Empty Level bit in the Core AHB + * Configuration register (GAHBCFG.NPTxFEmpLvl). + * @rxflvl: RxFIFO Non-Empty (RxFLvl) + * Indicates that there is at least one packet pending to be read + * from the RxFIFO. + * @sof: Start of (micro)Frame (Sof) + * In Host mode, the core sets this bit to indicate that an SOF + * (FS), micro-SOF (HS), or Keep-Alive (LS) is transmitted on the + * USB. The application must write a 1 to this bit to clear the + * interrupt. + * In Device mode, in the core sets this bit to indicate that an + * SOF token has been received on the USB. The application can read + * the Device Status register to get the current (micro)frame + * number. This interrupt is seen only when the core is operating + * at either HS or FS. + * @otgint: OTG Interrupt (OTGInt) + * The core sets this bit to indicate an OTG protocol event. The + * application must read the OTG Interrupt Status (GOTGINT) + * register to determine the exact event that caused this + * interrupt. The application must clear the appropriate status bit + * in the GOTGINT register to clear this bit. + * @modemis: Mode Mismatch Interrupt (ModeMis) + * The core sets this bit when the application is trying to access: + * * A Host mode register, when the core is operating in Device + * mode + * * A Device mode register, when the core is operating in Host + * mode + * The register access is completed on the AHB with an OKAY + * response, but is ignored by the core internally and doesn't + * affect the operation of the core. + * @curmod: Current Mode of Operation (CurMod) + * Indicates the current mode of operation. + * * 1'b0: Device mode + * * 1'b1: Host mode + */ + struct cvmx_usbcx_gintsts_s { + uint32_t wkupint : 1; + uint32_t sessreqint : 1; + uint32_t disconnint : 1; + uint32_t conidstschng : 1; + uint32_t reserved_27_27 : 1; + uint32_t ptxfemp : 1; + uint32_t hchint : 1; + uint32_t prtint : 1; + uint32_t reserved_23_23 : 1; + uint32_t fetsusp : 1; + uint32_t incomplp : 1; + uint32_t incompisoin : 1; + uint32_t oepint : 1; + uint32_t iepint : 1; + uint32_t epmis : 1; + uint32_t reserved_16_16 : 1; + uint32_t eopf : 1; + uint32_t isooutdrop : 1; + uint32_t enumdone : 1; + uint32_t usbrst : 1; + uint32_t usbsusp : 1; + uint32_t erlysusp : 1; + uint32_t i2cint : 1; + uint32_t ulpickint : 1; + uint32_t goutnakeff : 1; + uint32_t ginnakeff : 1; + uint32_t nptxfemp : 1; + uint32_t rxflvl : 1; + uint32_t sof : 1; + uint32_t otgint : 1; + uint32_t modemis : 1; + uint32_t curmod : 1; + } s; +}; +typedef union cvmx_usbcx_gintsts cvmx_usbcx_gintsts_t; + +/** + * cvmx_usbc#_gnptxfsiz + * + * Non-Periodic Transmit FIFO Size Register (GNPTXFSIZ) + * + * The application can program the RAM size and the memory start address for the + * Non-Periodic TxFIFO. + */ +union cvmx_usbcx_gnptxfsiz { + uint32_t u32; + /** + * struct cvmx_usbcx_gnptxfsiz_s + * @nptxfdep: Non-Periodic TxFIFO Depth (NPTxFDep) + * This value is in terms of 32-bit words. + * Minimum value is 16 + * Maximum value is 32768 + * @nptxfstaddr: Non-Periodic Transmit RAM Start Address (NPTxFStAddr) + * This field contains the memory start address for Non-Periodic + * Transmit FIFO RAM. + */ + struct cvmx_usbcx_gnptxfsiz_s { + uint32_t nptxfdep : 16; + uint32_t nptxfstaddr : 16; + } s; +}; +typedef union cvmx_usbcx_gnptxfsiz cvmx_usbcx_gnptxfsiz_t; + +/** + * cvmx_usbc#_gnptxsts + * + * Non-Periodic Transmit FIFO/Queue Status Register (GNPTXSTS) + * + * This read-only register contains the free space information for the + * Non-Periodic TxFIFO and the Non-Periodic Transmit Request Queue. + */ +union cvmx_usbcx_gnptxsts { + uint32_t u32; + /** + * struct cvmx_usbcx_gnptxsts_s + * @nptxqtop: Top of the Non-Periodic Transmit Request Queue (NPTxQTop) + * Entry in the Non-Periodic Tx Request Queue that is currently + * being processed by the MAC. + * * Bits [30:27]: Channel/endpoint number + * * Bits [26:25]: + * - 2'b00: IN/OUT token + * - 2'b01: Zero-length transmit packet (device IN/host OUT) + * - 2'b10: PING/CSPLIT token + * - 2'b11: Channel halt command + * * Bit [24]: Terminate (last entry for selected channel/endpoint) + * @nptxqspcavail: Non-Periodic Transmit Request Queue Space Available + * (NPTxQSpcAvail) + * Indicates the amount of free space available in the Non- + * Periodic Transmit Request Queue. This queue holds both IN + * and OUT requests in Host mode. Device mode has only IN + * requests. + * * 8'h0: Non-Periodic Transmit Request Queue is full + * * 8'h1: 1 location available + * * 8'h2: 2 locations available + * * n: n locations available (0..8) + * * Others: Reserved + * @nptxfspcavail: Non-Periodic TxFIFO Space Avail (NPTxFSpcAvail) + * Indicates the amount of free space available in the Non- + * Periodic TxFIFO. + * Values are in terms of 32-bit words. + * * 16'h0: Non-Periodic TxFIFO is full + * * 16'h1: 1 word available + * * 16'h2: 2 words available + * * 16'hn: n words available (where 0..32768) + * * 16'h8000: 32768 words available + * * Others: Reserved + */ + struct cvmx_usbcx_gnptxsts_s { + uint32_t reserved_31_31 : 1; + uint32_t nptxqtop : 7; + uint32_t nptxqspcavail : 8; + uint32_t nptxfspcavail : 16; + } s; +}; +typedef union cvmx_usbcx_gnptxsts cvmx_usbcx_gnptxsts_t; + +/** + * cvmx_usbc#_grstctl + * + * Core Reset Register (GRSTCTL) + * + * The application uses this register to reset various hardware features inside + * the core. + */ +union cvmx_usbcx_grstctl { + uint32_t u32; + /** + * struct cvmx_usbcx_grstctl_s + * @ahbidle: AHB Master Idle (AHBIdle) + * Indicates that the AHB Master State Machine is in the IDLE + * condition. + * @dmareq: DMA Request Signal (DMAReq) + * Indicates that the DMA request is in progress. Used for debug. + * @txfnum: TxFIFO Number (TxFNum) + * This is the FIFO number that must be flushed using the TxFIFO + * Flush bit. This field must not be changed until the core clears + * the TxFIFO Flush bit. + * * 5'h0: Non-Periodic TxFIFO flush + * * 5'h1: Periodic TxFIFO 1 flush in Device mode or Periodic + * TxFIFO flush in Host mode + * * 5'h2: Periodic TxFIFO 2 flush in Device mode + * - ... + * * 5'hF: Periodic TxFIFO 15 flush in Device mode + * * 5'h10: Flush all the Periodic and Non-Periodic TxFIFOs in the + * core + * @txfflsh: TxFIFO Flush (TxFFlsh) + * This bit selectively flushes a single or all transmit FIFOs, but + * cannot do so if the core is in the midst of a transaction. + * The application must only write this bit after checking that the + * core is neither writing to the TxFIFO nor reading from the + * TxFIFO. + * The application must wait until the core clears this bit before + * performing any operations. This bit takes 8 clocks (of phy_clk + * or hclk, whichever is slower) to clear. + * @rxfflsh: RxFIFO Flush (RxFFlsh) + * The application can flush the entire RxFIFO using this bit, but + * must first ensure that the core is not in the middle of a + * transaction. + * The application must only write to this bit after checking that + * the core is neither reading from the RxFIFO nor writing to the + * RxFIFO. + * The application must wait until the bit is cleared before + * performing any other operations. This bit will take 8 clocks + * (slowest of PHY or AHB clock) to clear. + * @intknqflsh: IN Token Sequence Learning Queue Flush (INTknQFlsh) + * The application writes this bit to flush the IN Token Sequence + * Learning Queue. + * @frmcntrrst: Host Frame Counter Reset (FrmCntrRst) + * The application writes this bit to reset the (micro)frame number + * counter inside the core. When the (micro)frame counter is reset, + * the subsequent SOF sent out by the core will have a + * (micro)frame number of 0. + * @hsftrst: HClk Soft Reset (HSftRst) + * The application uses this bit to flush the control logic in the + * AHB Clock domain. Only AHB Clock Domain pipelines are reset. + * * FIFOs are not flushed with this bit. + * * All state machines in the AHB clock domain are reset to the + * Idle state after terminating the transactions on the AHB, + * following the protocol. + * * CSR control bits used by the AHB clock domain state + * machines are cleared. + * * To clear this interrupt, status mask bits that control the + * interrupt status and are generated by the AHB clock domain + * state machine are cleared. + * * Because interrupt status bits are not cleared, the application + * can get the status of any core events that occurred after it set + * this bit. + * This is a self-clearing bit that the core clears after all + * necessary logic is reset in the core. This may take several + * clocks, depending on the core's current state. + * @csftrst: Core Soft Reset (CSftRst) + * Resets the hclk and phy_clock domains as follows: + * * Clears the interrupts and all the CSR registers except the + * following register bits: + * - PCGCCTL.RstPdwnModule + * - PCGCCTL.GateHclk + * - PCGCCTL.PwrClmp + * - PCGCCTL.StopPPhyLPwrClkSelclk + * - GUSBCFG.PhyLPwrClkSel + * - GUSBCFG.DDRSel + * - GUSBCFG.PHYSel + * - GUSBCFG.FSIntf + * - GUSBCFG.ULPI_UTMI_Sel + * - GUSBCFG.PHYIf + * - HCFG.FSLSPclkSel + * - DCFG.DevSpd + * * All module state machines (except the AHB Slave Unit) are + * reset to the IDLE state, and all the transmit FIFOs and the + * receive FIFO are flushed. + * * Any transactions on the AHB Master are terminated as soon + * as possible, after gracefully completing the last data phase of + * an AHB transfer. Any transactions on the USB are terminated + * immediately. + * The application can write to this bit any time it wants to reset + * the core. This is a self-clearing bit and the core clears this + * bit after all the necessary logic is reset in the core, which + * may take several clocks, depending on the current state of the + * core. Once this bit is cleared software should wait at least 3 + * PHY clocks before doing any access to the PHY domain + * (synchronization delay). Software should also should check that + * bit 31 of this register is 1 (AHB Master is IDLE) before + * starting any operation. + * Typically software reset is used during software development + * and also when you dynamically change the PHY selection bits + * in the USB configuration registers listed above. When you + * change the PHY, the corresponding clock for the PHY is + * selected and used in the PHY domain. Once a new clock is + * selected, the PHY domain has to be reset for proper operation. + */ + struct cvmx_usbcx_grstctl_s { + uint32_t ahbidle : 1; + uint32_t dmareq : 1; + uint32_t reserved_11_29 : 19; + uint32_t txfnum : 5; + uint32_t txfflsh : 1; + uint32_t rxfflsh : 1; + uint32_t intknqflsh : 1; + uint32_t frmcntrrst : 1; + uint32_t hsftrst : 1; + uint32_t csftrst : 1; + } s; +}; +typedef union cvmx_usbcx_grstctl cvmx_usbcx_grstctl_t; + +/** + * cvmx_usbc#_grxfsiz + * + * Receive FIFO Size Register (GRXFSIZ) + * + * The application can program the RAM size that must be allocated to the + * RxFIFO. + */ +union cvmx_usbcx_grxfsiz { + uint32_t u32; + /** + * struct cvmx_usbcx_grxfsiz_s + * @rxfdep: RxFIFO Depth (RxFDep) + * This value is in terms of 32-bit words. + * * Minimum value is 16 + * * Maximum value is 32768 + */ + struct cvmx_usbcx_grxfsiz_s { + uint32_t reserved_16_31 : 16; + uint32_t rxfdep : 16; + } s; +}; +typedef union cvmx_usbcx_grxfsiz cvmx_usbcx_grxfsiz_t; + +/** + * cvmx_usbc#_grxstsph + * + * Receive Status Read and Pop Register, Host Mode (GRXSTSPH) + * + * A read to the Receive Status Read and Pop register returns and additionally + * pops the top data entry out of the RxFIFO. + * This Description is only valid when the core is in Host Mode. For Device Mode + * use USBC_GRXSTSPD instead. + * NOTE: GRXSTSPH and GRXSTSPD are physically the same register and share the + * same offset in the O2P USB core. The offset difference shown in this + * document is for software clarity and is actually ignored by the + * hardware. + */ +union cvmx_usbcx_grxstsph { + uint32_t u32; + /** + * struct cvmx_usbcx_grxstsph_s + * @pktsts: Packet Status (PktSts) + * Indicates the status of the received packet + * * 4'b0010: IN data packet received + * * 4'b0011: IN transfer completed (triggers an interrupt) + * * 4'b0101: Data toggle error (triggers an interrupt) + * * 4'b0111: Channel halted (triggers an interrupt) + * * Others: Reserved + * @dpid: Data PID (DPID) + * * 2'b00: DATA0 + * * 2'b10: DATA1 + * * 2'b01: DATA2 + * * 2'b11: MDATA + * @bcnt: Byte Count (BCnt) + * Indicates the byte count of the received IN data packet + * @chnum: Channel Number (ChNum) + * Indicates the channel number to which the current received + * packet belongs. + */ + struct cvmx_usbcx_grxstsph_s { + uint32_t reserved_21_31 : 11; + uint32_t pktsts : 4; + uint32_t dpid : 2; + uint32_t bcnt : 11; + uint32_t chnum : 4; + } s; +}; +typedef union cvmx_usbcx_grxstsph cvmx_usbcx_grxstsph_t; + +/** + * cvmx_usbc#_gusbcfg + * + * Core USB Configuration Register (GUSBCFG) + * + * This register can be used to configure the core after power-on or a changing + * to Host mode or Device mode. It contains USB and USB-PHY related + * configuration parameters. The application must program this register before + * starting any transactions on either the AHB or the USB. Do not make changes + * to this register after the initial programming. + */ +union cvmx_usbcx_gusbcfg { + uint32_t u32; + /** + * struct cvmx_usbcx_gusbcfg_s + * @otgi2csel: UTMIFS or I2C Interface Select (OtgI2CSel) + * This bit is always 0x0. + * @phylpwrclksel: PHY Low-Power Clock Select (PhyLPwrClkSel) + * Software should set this bit to 0x0. + * Selects either 480-MHz or 48-MHz (low-power) PHY mode. In + * FS and LS modes, the PHY can usually operate on a 48-MHz + * clock to save power. + * * 1'b0: 480-MHz Internal PLL clock + * * 1'b1: 48-MHz External Clock + * In 480 MHz mode, the UTMI interface operates at either 60 or + * 30-MHz, depending upon whether 8- or 16-bit data width is + * selected. In 48-MHz mode, the UTMI interface operates at 48 + * MHz in FS mode and at either 48 or 6 MHz in LS mode + * (depending on the PHY vendor). + * This bit drives the utmi_fsls_low_power core output signal, and + * is valid only for UTMI+ PHYs. + * @usbtrdtim: USB Turnaround Time (USBTrdTim) + * Sets the turnaround time in PHY clocks. + * Specifies the response time for a MAC request to the Packet + * FIFO Controller (PFC) to fetch data from the DFIFO (SPRAM). + * This must be programmed to 0x5. + * @hnpcap: HNP-Capable (HNPCap) + * This bit is always 0x0. + * @srpcap: SRP-Capable (SRPCap) + * This bit is always 0x0. + * @ddrsel: ULPI DDR Select (DDRSel) + * Software should set this bit to 0x0. + * @physel: USB 2.0 High-Speed PHY or USB 1.1 Full-Speed Serial + * Software should set this bit to 0x0. + * @fsintf: Full-Speed Serial Interface Select (FSIntf) + * Software should set this bit to 0x0. + * @ulpi_utmi_sel: ULPI or UTMI+ Select (ULPI_UTMI_Sel) + * This bit is always 0x0. + * @phyif: PHY Interface (PHYIf) + * This bit is always 0x1. + * @toutcal: HS/FS Timeout Calibration (TOutCal) + * The number of PHY clocks that the application programs in this + * field is added to the high-speed/full-speed interpacket timeout + * duration in the core to account for any additional delays + * introduced by the PHY. This may be required, since the delay + * introduced by the PHY in generating the linestate condition may + * vary from one PHY to another. + * The USB standard timeout value for high-speed operation is + * 736 to 816 (inclusive) bit times. The USB standard timeout + * value for full-speed operation is 16 to 18 (inclusive) bit + * times. The application must program this field based on the + * speed of enumeration. The number of bit times added per PHY + * clock are: + * High-speed operation: + * * One 30-MHz PHY clock = 16 bit times + * * One 60-MHz PHY clock = 8 bit times + * Full-speed operation: + * * One 30-MHz PHY clock = 0.4 bit times + * * One 60-MHz PHY clock = 0.2 bit times + * * One 48-MHz PHY clock = 0.25 bit times + */ + struct cvmx_usbcx_gusbcfg_s { + uint32_t reserved_17_31 : 15; + uint32_t otgi2csel : 1; + uint32_t phylpwrclksel : 1; + uint32_t reserved_14_14 : 1; + uint32_t usbtrdtim : 4; + uint32_t hnpcap : 1; + uint32_t srpcap : 1; + uint32_t ddrsel : 1; + uint32_t physel : 1; + uint32_t fsintf : 1; + uint32_t ulpi_utmi_sel : 1; + uint32_t phyif : 1; + uint32_t toutcal : 3; + } s; +}; +typedef union cvmx_usbcx_gusbcfg cvmx_usbcx_gusbcfg_t; + +/** + * cvmx_usbc#_haint + * + * Host All Channels Interrupt Register (HAINT) + * + * When a significant event occurs on a channel, the Host All Channels Interrupt + * register interrupts the application using the Host Channels Interrupt bit of + * the Core Interrupt register (GINTSTS.HChInt). This is shown in Interrupt. + * There is one interrupt bit per channel, up to a maximum of 16 bits. Bits in + * this register are set and cleared when the application sets and clears bits + * in the corresponding Host Channel-n Interrupt register. + */ +union cvmx_usbcx_haint { + uint32_t u32; + /** + * struct cvmx_usbcx_haint_s + * @haint: Channel Interrupts (HAINT) + * One bit per channel: Bit 0 for Channel 0, bit 15 for Channel 15 + */ + struct cvmx_usbcx_haint_s { + uint32_t reserved_16_31 : 16; + uint32_t haint : 16; + } s; +}; +typedef union cvmx_usbcx_haint cvmx_usbcx_haint_t; + +/** + * cvmx_usbc#_haintmsk + * + * Host All Channels Interrupt Mask Register (HAINTMSK) + * + * The Host All Channel Interrupt Mask register works with the Host All Channel + * Interrupt register to interrupt the application when an event occurs on a + * channel. There is one interrupt mask bit per channel, up to a maximum of 16 + * bits. + * Mask interrupt: 1'b0 Unmask interrupt: 1'b1 + */ +union cvmx_usbcx_haintmsk { + uint32_t u32; + /** + * struct cvmx_usbcx_haintmsk_s + * @haintmsk: Channel Interrupt Mask (HAINTMsk) + * One bit per channel: Bit 0 for channel 0, bit 15 for channel 15 + */ + struct cvmx_usbcx_haintmsk_s { + uint32_t reserved_16_31 : 16; + uint32_t haintmsk : 16; + } s; +}; +typedef union cvmx_usbcx_haintmsk cvmx_usbcx_haintmsk_t; + +/** + * cvmx_usbc#_hcchar# + * + * Host Channel-n Characteristics Register (HCCHAR) + * + */ +union cvmx_usbcx_hccharx { + uint32_t u32; + /** + * struct cvmx_usbcx_hccharx_s + * @chena: Channel Enable (ChEna) + * This field is set by the application and cleared by the OTG + * host. + * * 1'b0: Channel disabled + * * 1'b1: Channel enabled + * @chdis: Channel Disable (ChDis) + * The application sets this bit to stop transmitting/receiving + * data on a channel, even before the transfer for that channel is + * complete. The application must wait for the Channel Disabled + * interrupt before treating the channel as disabled. + * @oddfrm: Odd Frame (OddFrm) + * This field is set (reset) by the application to indicate that + * the OTG host must perform a transfer in an odd (micro)frame. + * This field is applicable for only periodic (isochronous and + * interrupt) transactions. + * * 1'b0: Even (micro)frame + * * 1'b1: Odd (micro)frame + * @devaddr: Device Address (DevAddr) + * This field selects the specific device serving as the data + * source or sink. + * @ec: Multi Count (MC) / Error Count (EC) + * When the Split Enable bit of the Host Channel-n Split Control + * register (HCSPLTn.SpltEna) is reset (1'b0), this field indicates + * to the host the number of transactions that should be executed + * per microframe for this endpoint. + * * 2'b00: Reserved. This field yields undefined results. + * * 2'b01: 1 transaction + * * 2'b10: 2 transactions to be issued for this endpoint per + * microframe + * * 2'b11: 3 transactions to be issued for this endpoint per + * microframe + * When HCSPLTn.SpltEna is set (1'b1), this field indicates the + * number of immediate retries to be performed for a periodic split + * transactions on transaction errors. This field must be set to at + * least 2'b01. + * @eptype: Endpoint Type (EPType) + * Indicates the transfer type selected. + * * 2'b00: Control + * * 2'b01: Isochronous + * * 2'b10: Bulk + * * 2'b11: Interrupt + * @lspddev: Low-Speed Device (LSpdDev) + * This field is set by the application to indicate that this + * channel is communicating to a low-speed device. + * @epdir: Endpoint Direction (EPDir) + * Indicates whether the transaction is IN or OUT. + * * 1'b0: OUT + * * 1'b1: IN + * @epnum: Endpoint Number (EPNum) + * Indicates the endpoint number on the device serving as the + * data source or sink. + * @mps: Maximum Packet Size (MPS) + * Indicates the maximum packet size of the associated endpoint. + */ + struct cvmx_usbcx_hccharx_s { + uint32_t chena : 1; + uint32_t chdis : 1; + uint32_t oddfrm : 1; + uint32_t devaddr : 7; + uint32_t ec : 2; + uint32_t eptype : 2; + uint32_t lspddev : 1; + uint32_t reserved_16_16 : 1; + uint32_t epdir : 1; + uint32_t epnum : 4; + uint32_t mps : 11; + } s; +}; +typedef union cvmx_usbcx_hccharx cvmx_usbcx_hccharx_t; + +/** + * cvmx_usbc#_hcfg + * + * Host Configuration Register (HCFG) + * + * This register configures the core after power-on. Do not make changes to this + * register after initializing the host. + */ +union cvmx_usbcx_hcfg { + uint32_t u32; + /** + * struct cvmx_usbcx_hcfg_s + * @fslssupp: FS- and LS-Only Support (FSLSSupp) + * The application uses this bit to control the core's enumeration + * speed. Using this bit, the application can make the core + * enumerate as a FS host, even if the connected device supports + * HS traffic. Do not make changes to this field after initial + * programming. + * * 1'b0: HS/FS/LS, based on the maximum speed supported by + * the connected device + * * 1'b1: FS/LS-only, even if the connected device can support HS + * @fslspclksel: FS/LS PHY Clock Select (FSLSPclkSel) + * When the core is in FS Host mode + * * 2'b00: PHY clock is running at 30/60 MHz + * * 2'b01: PHY clock is running at 48 MHz + * * Others: Reserved + * When the core is in LS Host mode + * * 2'b00: PHY clock is running at 30/60 MHz. When the + * UTMI+/ULPI PHY Low Power mode is not selected, use + * 30/60 MHz. + * * 2'b01: PHY clock is running at 48 MHz. When the UTMI+ + * PHY Low Power mode is selected, use 48MHz if the PHY + * supplies a 48 MHz clock during LS mode. + * * 2'b10: PHY clock is running at 6 MHz. In USB 1.1 FS mode, + * use 6 MHz when the UTMI+ PHY Low Power mode is + * selected and the PHY supplies a 6 MHz clock during LS + * mode. If you select a 6 MHz clock during LS mode, you must + * do a soft reset. + * * 2'b11: Reserved + */ + struct cvmx_usbcx_hcfg_s { + uint32_t reserved_3_31 : 29; + uint32_t fslssupp : 1; + uint32_t fslspclksel : 2; + } s; +}; +typedef union cvmx_usbcx_hcfg cvmx_usbcx_hcfg_t; + +/** + * cvmx_usbc#_hcint# + * + * Host Channel-n Interrupt Register (HCINT) + * + * This register indicates the status of a channel with respect to USB- and + * AHB-related events. The application must read this register when the Host + * Channels Interrupt bit of the Core Interrupt register (GINTSTS.HChInt) is + * set. Before the application can read this register, it must first read + * the Host All Channels Interrupt (HAINT) register to get the exact channel + * number for the Host Channel-n Interrupt register. The application must clear + * the appropriate bit in this register to clear the corresponding bits in the + * HAINT and GINTSTS registers. + */ +union cvmx_usbcx_hcintx { + uint32_t u32; + /** + * struct cvmx_usbcx_hcintx_s + * @datatglerr: Data Toggle Error (DataTglErr) + * @frmovrun: Frame Overrun (FrmOvrun) + * @bblerr: Babble Error (BblErr) + * @xacterr: Transaction Error (XactErr) + * @nyet: NYET Response Received Interrupt (NYET) + * @ack: ACK Response Received Interrupt (ACK) + * @nak: NAK Response Received Interrupt (NAK) + * @stall: STALL Response Received Interrupt (STALL) + * @ahberr: This bit is always 0x0. + * @chhltd: Channel Halted (ChHltd) + * Indicates the transfer completed abnormally either because of + * any USB transaction error or in response to disable request by + * the application. + * @xfercompl: Transfer Completed (XferCompl) + * Transfer completed normally without any errors. + */ + struct cvmx_usbcx_hcintx_s { + uint32_t reserved_11_31 : 21; + uint32_t datatglerr : 1; + uint32_t frmovrun : 1; + uint32_t bblerr : 1; + uint32_t xacterr : 1; + uint32_t nyet : 1; + uint32_t ack : 1; + uint32_t nak : 1; + uint32_t stall : 1; + uint32_t ahberr : 1; + uint32_t chhltd : 1; + uint32_t xfercompl : 1; + } s; +}; +typedef union cvmx_usbcx_hcintx cvmx_usbcx_hcintx_t; + +/** + * cvmx_usbc#_hcintmsk# + * + * Host Channel-n Interrupt Mask Register (HCINTMSKn) + * + * This register reflects the mask for each channel status described in the + * previous section. + * Mask interrupt: 1'b0 Unmask interrupt: 1'b1 + */ +union cvmx_usbcx_hcintmskx { + uint32_t u32; + /** + * struct cvmx_usbcx_hcintmskx_s + * @datatglerrmsk: Data Toggle Error Mask (DataTglErrMsk) + * @frmovrunmsk: Frame Overrun Mask (FrmOvrunMsk) + * @bblerrmsk: Babble Error Mask (BblErrMsk) + * @xacterrmsk: Transaction Error Mask (XactErrMsk) + * @nyetmsk: NYET Response Received Interrupt Mask (NyetMsk) + * @ackmsk: ACK Response Received Interrupt Mask (AckMsk) + * @nakmsk: NAK Response Received Interrupt Mask (NakMsk) + * @stallmsk: STALL Response Received Interrupt Mask (StallMsk) + * @ahberrmsk: AHB Error Mask (AHBErrMsk) + * @chhltdmsk: Channel Halted Mask (ChHltdMsk) + * @xfercomplmsk: Transfer Completed Mask (XferComplMsk) + */ + struct cvmx_usbcx_hcintmskx_s { + uint32_t reserved_11_31 : 21; + uint32_t datatglerrmsk : 1; + uint32_t frmovrunmsk : 1; + uint32_t bblerrmsk : 1; + uint32_t xacterrmsk : 1; + uint32_t nyetmsk : 1; + uint32_t ackmsk : 1; + uint32_t nakmsk : 1; + uint32_t stallmsk : 1; + uint32_t ahberrmsk : 1; + uint32_t chhltdmsk : 1; + uint32_t xfercomplmsk : 1; + } s; +}; +typedef union cvmx_usbcx_hcintmskx cvmx_usbcx_hcintmskx_t; + +/** + * cvmx_usbc#_hcsplt# + * + * Host Channel-n Split Control Register (HCSPLT) + * + */ +union cvmx_usbcx_hcspltx { + uint32_t u32; + /** + * struct cvmx_usbcx_hcspltx_s + * @spltena: Split Enable (SpltEna) + * The application sets this field to indicate that this channel is + * enabled to perform split transactions. + * @compsplt: Do Complete Split (CompSplt) + * The application sets this field to request the OTG host to + * perform a complete split transaction. + * @xactpos: Transaction Position (XactPos) + * This field is used to determine whether to send all, first, + * middle, or last payloads with each OUT transaction. + * * 2'b11: All. This is the entire data payload is of this + * transaction (which is less than or equal to 188 bytes). + * * 2'b10: Begin. This is the first data payload of this + * transaction (which is larger than 188 bytes). + * * 2'b00: Mid. This is the middle payload of this transaction + * (which is larger than 188 bytes). + * * 2'b01: End. This is the last payload of this transaction + * (which is larger than 188 bytes). + * @hubaddr: Hub Address (HubAddr) + * This field holds the device address of the transaction + * translator's hub. + * @prtaddr: Port Address (PrtAddr) + * This field is the port number of the recipient transaction + * translator. + */ + struct cvmx_usbcx_hcspltx_s { + uint32_t spltena : 1; + uint32_t reserved_17_30 : 14; + uint32_t compsplt : 1; + uint32_t xactpos : 2; + uint32_t hubaddr : 7; + uint32_t prtaddr : 7; + } s; +}; +typedef union cvmx_usbcx_hcspltx cvmx_usbcx_hcspltx_t; + +/** + * cvmx_usbc#_hctsiz# + * + * Host Channel-n Transfer Size Register (HCTSIZ) + * + */ +union cvmx_usbcx_hctsizx { + uint32_t u32; + /** + * struct cvmx_usbcx_hctsizx_s + * @dopng: Do Ping (DoPng) + * Setting this field to 1 directs the host to do PING protocol. + * @pid: PID (Pid) + * The application programs this field with the type of PID to use + * for the initial transaction. The host will maintain this field + * for the rest of the transfer. + * * 2'b00: DATA0 + * * 2'b01: DATA2 + * * 2'b10: DATA1 + * * 2'b11: MDATA (non-control)/SETUP (control) + * @pktcnt: Packet Count (PktCnt) + * This field is programmed by the application with the expected + * number of packets to be transmitted (OUT) or received (IN). + * The host decrements this count on every successful + * transmission or reception of an OUT/IN packet. Once this count + * reaches zero, the application is interrupted to indicate normal + * completion. + * @xfersize: Transfer Size (XferSize) + * For an OUT, this field is the number of data bytes the host will + * send during the transfer. + * For an IN, this field is the buffer size that the application + * has reserved for the transfer. The application is expected to + * program this field as an integer multiple of the maximum packet + * size for IN transactions (periodic and non-periodic). + */ + struct cvmx_usbcx_hctsizx_s { + uint32_t dopng : 1; + uint32_t pid : 2; + uint32_t pktcnt : 10; + uint32_t xfersize : 19; + } s; +}; +typedef union cvmx_usbcx_hctsizx cvmx_usbcx_hctsizx_t; + +/** + * cvmx_usbc#_hfir + * + * Host Frame Interval Register (HFIR) + * + * This register stores the frame interval information for the current speed to + * which the O2P USB core has enumerated. + */ +union cvmx_usbcx_hfir { + uint32_t u32; + /** + * struct cvmx_usbcx_hfir_s + * @frint: Frame Interval (FrInt) + * The value that the application programs to this field specifies + * the interval between two consecutive SOFs (FS) or micro- + * SOFs (HS) or Keep-Alive tokens (HS). This field contains the + * number of PHY clocks that constitute the required frame + * interval. The default value set in this field for a FS operation + * when the PHY clock frequency is 60 MHz. The application can + * write a value to this register only after the Port Enable bit of + * the Host Port Control and Status register (HPRT.PrtEnaPort) + * has been set. If no value is programmed, the core calculates + * the value based on the PHY clock specified in the FS/LS PHY + * Clock Select field of the Host Configuration register + * (HCFG.FSLSPclkSel). Do not change the value of this field + * after the initial configuration. + * * 125 us (PHY clock frequency for HS) + * * 1 ms (PHY clock frequency for FS/LS) + */ + struct cvmx_usbcx_hfir_s { + uint32_t reserved_16_31 : 16; + uint32_t frint : 16; + } s; +}; +typedef union cvmx_usbcx_hfir cvmx_usbcx_hfir_t; + +/** + * cvmx_usbc#_hfnum + * + * Host Frame Number/Frame Time Remaining Register (HFNUM) + * + * This register indicates the current frame number. + * It also indicates the time remaining (in terms of the number of PHY clocks) + * in the current (micro)frame. + */ +union cvmx_usbcx_hfnum { + uint32_t u32; + /** + * struct cvmx_usbcx_hfnum_s + * @frrem: Frame Time Remaining (FrRem) + * Indicates the amount of time remaining in the current + * microframe (HS) or frame (FS/LS), in terms of PHY clocks. + * This field decrements on each PHY clock. When it reaches + * zero, this field is reloaded with the value in the Frame + * Interval register and a new SOF is transmitted on the USB. + * @frnum: Frame Number (FrNum) + * This field increments when a new SOF is transmitted on the + * USB, and is reset to 0 when it reaches 16'h3FFF. + */ + struct cvmx_usbcx_hfnum_s { + uint32_t frrem : 16; + uint32_t frnum : 16; + } s; +}; +typedef union cvmx_usbcx_hfnum cvmx_usbcx_hfnum_t; + +/** + * cvmx_usbc#_hprt + * + * Host Port Control and Status Register (HPRT) + * + * This register is available in both Host and Device modes. + * Currently, the OTG Host supports only one port. + * A single register holds USB port-related information such as USB reset, + * enable, suspend, resume, connect status, and test mode for each port. The + * R_SS_WC bits in this register can trigger an interrupt to the application + * through the Host Port Interrupt bit of the Core Interrupt register + * (GINTSTS.PrtInt). On a Port Interrupt, the application must read this + * register and clear the bit that caused the interrupt. For the R_SS_WC bits, + * the application must write a 1 to the bit to clear the interrupt. + */ +union cvmx_usbcx_hprt { + uint32_t u32; + /** + * struct cvmx_usbcx_hprt_s + * @prtspd: Port Speed (PrtSpd) + * Indicates the speed of the device attached to this port. + * * 2'b00: High speed + * * 2'b01: Full speed + * * 2'b10: Low speed + * * 2'b11: Reserved + * @prttstctl: Port Test Control (PrtTstCtl) + * The application writes a nonzero value to this field to put + * the port into a Test mode, and the corresponding pattern is + * signaled on the port. + * * 4'b0000: Test mode disabled + * * 4'b0001: Test_J mode + * * 4'b0010: Test_K mode + * * 4'b0011: Test_SE0_NAK mode + * * 4'b0100: Test_Packet mode + * * 4'b0101: Test_Force_Enable + * * Others: Reserved + * PrtSpd must be zero (i.e. the interface must be in high-speed + * mode) to use the PrtTstCtl test modes. + * @prtpwr: Port Power (PrtPwr) + * The application uses this field to control power to this port, + * and the core clears this bit on an overcurrent condition. + * * 1'b0: Power off + * * 1'b1: Power on + * @prtlnsts: Port Line Status (PrtLnSts) + * Indicates the current logic level USB data lines + * * Bit [10]: Logic level of D- + * * Bit [11]: Logic level of D+ + * @prtrst: Port Reset (PrtRst) + * When the application sets this bit, a reset sequence is + * started on this port. The application must time the reset + * period and clear this bit after the reset sequence is + * complete. + * * 1'b0: Port not in reset + * * 1'b1: Port in reset + * The application must leave this bit set for at least a + * minimum duration mentioned below to start a reset on the + * port. The application can leave it set for another 10 ms in + * addition to the required minimum duration, before clearing + * the bit, even though there is no maximum limit set by the + * USB standard. + * * High speed: 50 ms + * * Full speed/Low speed: 10 ms + * @prtsusp: Port Suspend (PrtSusp) + * The application sets this bit to put this port in Suspend + * mode. The core only stops sending SOFs when this is set. + * To stop the PHY clock, the application must set the Port + * Clock Stop bit, which will assert the suspend input pin of + * the PHY. + * The read value of this bit reflects the current suspend + * status of the port. This bit is cleared by the core after a + * remote wakeup signal is detected or the application sets + * the Port Reset bit or Port Resume bit in this register or the + * Resume/Remote Wakeup Detected Interrupt bit or + * Disconnect Detected Interrupt bit in the Core Interrupt + * register (GINTSTS.WkUpInt or GINTSTS.DisconnInt, + * respectively). + * * 1'b0: Port not in Suspend mode + * * 1'b1: Port in Suspend mode + * @prtres: Port Resume (PrtRes) + * The application sets this bit to drive resume signaling on + * the port. The core continues to drive the resume signal + * until the application clears this bit. + * If the core detects a USB remote wakeup sequence, as + * indicated by the Port Resume/Remote Wakeup Detected + * Interrupt bit of the Core Interrupt register + * (GINTSTS.WkUpInt), the core starts driving resume + * signaling without application intervention and clears this bit + * when it detects a disconnect condition. The read value of + * this bit indicates whether the core is currently driving + * resume signaling. + * * 1'b0: No resume driven + * * 1'b1: Resume driven + * @prtovrcurrchng: Port Overcurrent Change (PrtOvrCurrChng) + * The core sets this bit when the status of the Port + * Overcurrent Active bit (bit 4) in this register changes. + * @prtovrcurract: Port Overcurrent Active (PrtOvrCurrAct) + * Indicates the overcurrent condition of the port. + * * 1'b0: No overcurrent condition + * * 1'b1: Overcurrent condition + * @prtenchng: Port Enable/Disable Change (PrtEnChng) + * The core sets this bit when the status of the Port Enable bit + * [2] of this register changes. + * @prtena: Port Enable (PrtEna) + * A port is enabled only by the core after a reset sequence, + * and is disabled by an overcurrent condition, a disconnect + * condition, or by the application clearing this bit. The + * application cannot set this bit by a register write. It can only + * clear it to disable the port. This bit does not trigger any + * interrupt to the application. + * * 1'b0: Port disabled + * * 1'b1: Port enabled + * @prtconndet: Port Connect Detected (PrtConnDet) + * The core sets this bit when a device connection is detected + * to trigger an interrupt to the application using the Host Port + * Interrupt bit of the Core Interrupt register (GINTSTS.PrtInt). + * The application must write a 1 to this bit to clear the + * interrupt. + * @prtconnsts: Port Connect Status (PrtConnSts) + * * 0: No device is attached to the port. + * * 1: A device is attached to the port. + */ + struct cvmx_usbcx_hprt_s { + uint32_t reserved_19_31 : 13; + uint32_t prtspd : 2; + uint32_t prttstctl : 4; + uint32_t prtpwr : 1; + uint32_t prtlnsts : 2; + uint32_t reserved_9_9 : 1; + uint32_t prtrst : 1; + uint32_t prtsusp : 1; + uint32_t prtres : 1; + uint32_t prtovrcurrchng : 1; + uint32_t prtovrcurract : 1; + uint32_t prtenchng : 1; + uint32_t prtena : 1; + uint32_t prtconndet : 1; + uint32_t prtconnsts : 1; + } s; +}; +typedef union cvmx_usbcx_hprt cvmx_usbcx_hprt_t; + +/** + * cvmx_usbc#_hptxfsiz + * + * Host Periodic Transmit FIFO Size Register (HPTXFSIZ) + * + * This register holds the size and the memory start address of the Periodic + * TxFIFO, as shown in Figures 310 and 311. + */ +union cvmx_usbcx_hptxfsiz { + uint32_t u32; + /** + * struct cvmx_usbcx_hptxfsiz_s + * @ptxfsize: Host Periodic TxFIFO Depth (PTxFSize) + * This value is in terms of 32-bit words. + * * Minimum value is 16 + * * Maximum value is 32768 + * @ptxfstaddr: Host Periodic TxFIFO Start Address (PTxFStAddr) + */ + struct cvmx_usbcx_hptxfsiz_s { + uint32_t ptxfsize : 16; + uint32_t ptxfstaddr : 16; + } s; +}; +typedef union cvmx_usbcx_hptxfsiz cvmx_usbcx_hptxfsiz_t; + +/** + * cvmx_usbc#_hptxsts + * + * Host Periodic Transmit FIFO/Queue Status Register (HPTXSTS) + * + * This read-only register contains the free space information for the Periodic + * TxFIFO and the Periodic Transmit Request Queue + */ +union cvmx_usbcx_hptxsts { + uint32_t u32; + /** + * struct cvmx_usbcx_hptxsts_s + * @ptxqtop: Top of the Periodic Transmit Request Queue (PTxQTop) + * This indicates the entry in the Periodic Tx Request Queue that + * is currently being processes by the MAC. + * This register is used for debugging. + * * Bit [31]: Odd/Even (micro)frame + * - 1'b0: send in even (micro)frame + * - 1'b1: send in odd (micro)frame + * * Bits [30:27]: Channel/endpoint number + * * Bits [26:25]: Type + * - 2'b00: IN/OUT + * - 2'b01: Zero-length packet + * - 2'b10: CSPLIT + * - 2'b11: Disable channel command + * * Bit [24]: Terminate (last entry for the selected + * channel/endpoint) + * @ptxqspcavail: Periodic Transmit Request Queue Space Available + * (PTxQSpcAvail) + * Indicates the number of free locations available to be written + * in the Periodic Transmit Request Queue. This queue holds both + * IN and OUT requests. + * * 8'h0: Periodic Transmit Request Queue is full + * * 8'h1: 1 location available + * * 8'h2: 2 locations available + * * n: n locations available (0..8) + * * Others: Reserved + * @ptxfspcavail: Periodic Transmit Data FIFO Space Available + * (PTxFSpcAvail) + * Indicates the number of free locations available to be written + * to in the Periodic TxFIFO. + * Values are in terms of 32-bit words + * * 16'h0: Periodic TxFIFO is full + * * 16'h1: 1 word available + * * 16'h2: 2 words available + * * 16'hn: n words available (where 0..32768) + * * 16'h8000: 32768 words available + * * Others: Reserved + */ + struct cvmx_usbcx_hptxsts_s { + uint32_t ptxqtop : 8; + uint32_t ptxqspcavail : 8; + uint32_t ptxfspcavail : 16; + } s; +}; +typedef union cvmx_usbcx_hptxsts cvmx_usbcx_hptxsts_t; + +#endif diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbnx-defs.h b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbnx-defs.h new file mode 100644 index 0000000000..96d706770f --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/cvmx-usbnx-defs.h @@ -0,0 +1,887 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights + * reserved. + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + + * * Neither the name of Cavium Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This Software, including technical data, may be subject to U.S. export + * control laws, including the U.S. Export Administration Act and its associated + * regulations, and may be subject to export or import regulations in other + * countries. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR + * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO + * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION + * OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM + * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, + * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF + * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR + * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR + * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. + ***********************license end**************************************/ + + +/** + * cvmx-usbnx-defs.h + * + * Configuration and status register (CSR) type definitions for + * Octeon usbnx. + * + */ +#ifndef __CVMX_USBNX_TYPEDEFS_H__ +#define __CVMX_USBNX_TYPEDEFS_H__ + +#define CVMX_USBNXBID1(bid) (((bid) & 1) * 0x10000000ull) +#define CVMX_USBNXBID2(bid) (((bid) & 1) * 0x100000000000ull) + +#define CVMX_USBNXREG1(reg, bid) \ + (CVMX_ADD_IO_SEG(0x0001180068000000ull | reg) + CVMX_USBNXBID1(bid)) +#define CVMX_USBNXREG2(reg, bid) \ + (CVMX_ADD_IO_SEG(0x00016F0000000000ull | reg) + CVMX_USBNXBID2(bid)) + +#define CVMX_USBNX_CLK_CTL(bid) CVMX_USBNXREG1(0x10, bid) +#define CVMX_USBNX_DMA0_INB_CHN0(bid) CVMX_USBNXREG2(0x818, bid) +#define CVMX_USBNX_DMA0_OUTB_CHN0(bid) CVMX_USBNXREG2(0x858, bid) +#define CVMX_USBNX_USBP_CTL_STATUS(bid) CVMX_USBNXREG1(0x18, bid) + +/** + * cvmx_usbn#_clk_ctl + * + * USBN_CLK_CTL = USBN's Clock Control + * + * This register is used to control the frequency of the hclk and the + * hreset and phy_rst signals. + */ +union cvmx_usbnx_clk_ctl { + uint64_t u64; + /** + * struct cvmx_usbnx_clk_ctl_s + * @divide2: The 'hclk' used by the USB subsystem is derived + * from the eclk. + * Also see the field DIVIDE. DIVIDE2<1> must currently + * be zero because it is not implemented, so the maximum + * ratio of eclk/hclk is currently 16. + * The actual divide number for hclk is: + * (DIVIDE2 + 1) * (DIVIDE + 1) + * @hclk_rst: When this field is '0' the HCLK-DIVIDER used to + * generate the hclk in the USB Subsystem is held + * in reset. This bit must be set to '0' before + * changing the value os DIVIDE in this register. + * The reset to the HCLK_DIVIDERis also asserted + * when core reset is asserted. + * @p_x_on: Force USB-PHY on during suspend. + * '1' USB-PHY XO block is powered-down during + * suspend. + * '0' USB-PHY XO block is powered-up during + * suspend. + * The value of this field must be set while POR is + * active. + * @p_com_on: '0' Force USB-PHY XO Bias, Bandgap and PLL to + * remain powered in Suspend Mode. + * '1' The USB-PHY XO Bias, Bandgap and PLL are + * powered down in suspend mode. + * The value of this field must be set while POR is + * active. + * @p_c_sel: Phy clock speed select. + * Selects the reference clock / crystal frequency. + * '11': Reserved + * '10': 48 MHz (reserved when a crystal is used) + * '01': 24 MHz (reserved when a crystal is used) + * '00': 12 MHz + * The value of this field must be set while POR is + * active. + * NOTE: if a crystal is used as a reference clock, + * this field must be set to 12 MHz. + * @cdiv_byp: Used to enable the bypass input to the USB_CLK_DIV. + * @sd_mode: Scaledown mode for the USBC. Control timing events + * in the USBC, for normal operation this must be '0'. + * @s_bist: Starts bist on the hclk memories, during the '0' + * to '1' transition. + * @por: Power On Reset for the PHY. + * Resets all the PHYS registers and state machines. + * @enable: When '1' allows the generation of the hclk. When + * '0' the hclk will not be generated. SEE DIVIDE + * field of this register. + * @prst: When this field is '0' the reset associated with + * the phy_clk functionality in the USB Subsystem is + * help in reset. This bit should not be set to '1' + * until the time it takes 6 clocks (hclk or phy_clk, + * whichever is slower) has passed. Under normal + * operation once this bit is set to '1' it should not + * be set to '0'. + * @hrst: When this field is '0' the reset associated with + * the hclk functioanlity in the USB Subsystem is + * held in reset.This bit should not be set to '1' + * until 12ms after phy_clk is stable. Under normal + * operation, once this bit is set to '1' it should + * not be set to '0'. + * @divide: The frequency of 'hclk' used by the USB subsystem + * is the eclk frequency divided by the value of + * (DIVIDE2 + 1) * (DIVIDE + 1), also see the field + * DIVIDE2 of this register. + * The hclk frequency should be less than 125Mhz. + * After writing a value to this field the SW should + * read the field for the value written. + * The ENABLE field of this register should not be set + * until AFTER this field is set and then read. + */ + struct cvmx_usbnx_clk_ctl_s { + uint64_t reserved_20_63 : 44; + uint64_t divide2 : 2; + uint64_t hclk_rst : 1; + uint64_t p_x_on : 1; + uint64_t reserved_14_15 : 2; + uint64_t p_com_on : 1; + uint64_t p_c_sel : 2; + uint64_t cdiv_byp : 1; + uint64_t sd_mode : 2; + uint64_t s_bist : 1; + uint64_t por : 1; + uint64_t enable : 1; + uint64_t prst : 1; + uint64_t hrst : 1; + uint64_t divide : 3; + } s; + /** + * struct cvmx_usbnx_clk_ctl_cn30xx + * @hclk_rst: When this field is '0' the HCLK-DIVIDER used to + * generate the hclk in the USB Subsystem is held + * in reset. This bit must be set to '0' before + * changing the value os DIVIDE in this register. + * The reset to the HCLK_DIVIDERis also asserted + * when core reset is asserted. + * @p_x_on: Force USB-PHY on during suspend. + * '1' USB-PHY XO block is powered-down during + * suspend. + * '0' USB-PHY XO block is powered-up during + * suspend. + * The value of this field must be set while POR is + * active. + * @p_rclk: Phy refrence clock enable. + * '1' The PHY PLL uses the XO block output as a + * reference. + * '0' Reserved. + * @p_xenbn: Phy external clock enable. + * '1' The XO block uses the clock from a crystal. + * '0' The XO block uses an external clock supplied + * on the XO pin. USB_XI should be tied to + * ground for this usage. + * @p_com_on: '0' Force USB-PHY XO Bias, Bandgap and PLL to + * remain powered in Suspend Mode. + * '1' The USB-PHY XO Bias, Bandgap and PLL are + * powered down in suspend mode. + * The value of this field must be set while POR is + * active. + * @p_c_sel: Phy clock speed select. + * Selects the reference clock / crystal frequency. + * '11': Reserved + * '10': 48 MHz + * '01': 24 MHz + * '00': 12 MHz + * The value of this field must be set while POR is + * active. + * @cdiv_byp: Used to enable the bypass input to the USB_CLK_DIV. + * @sd_mode: Scaledown mode for the USBC. Control timing events + * in the USBC, for normal operation this must be '0'. + * @s_bist: Starts bist on the hclk memories, during the '0' + * to '1' transition. + * @por: Power On Reset for the PHY. + * Resets all the PHYS registers and state machines. + * @enable: When '1' allows the generation of the hclk. When + * '0' the hclk will not be generated. + * @prst: When this field is '0' the reset associated with + * the phy_clk functionality in the USB Subsystem is + * help in reset. This bit should not be set to '1' + * until the time it takes 6 clocks (hclk or phy_clk, + * whichever is slower) has passed. Under normal + * operation once this bit is set to '1' it should not + * be set to '0'. + * @hrst: When this field is '0' the reset associated with + * the hclk functioanlity in the USB Subsystem is + * held in reset.This bit should not be set to '1' + * until 12ms after phy_clk is stable. Under normal + * operation, once this bit is set to '1' it should + * not be set to '0'. + * @divide: The 'hclk' used by the USB subsystem is derived + * from the eclk. The eclk will be divided by the + * value of this field +1 to determine the hclk + * frequency. (Also see HRST of this register). + * The hclk frequency must be less than 125 MHz. + */ + struct cvmx_usbnx_clk_ctl_cn30xx { + uint64_t reserved_18_63 : 46; + uint64_t hclk_rst : 1; + uint64_t p_x_on : 1; + uint64_t p_rclk : 1; + uint64_t p_xenbn : 1; + uint64_t p_com_on : 1; + uint64_t p_c_sel : 2; + uint64_t cdiv_byp : 1; + uint64_t sd_mode : 2; + uint64_t s_bist : 1; + uint64_t por : 1; + uint64_t enable : 1; + uint64_t prst : 1; + uint64_t hrst : 1; + uint64_t divide : 3; + } cn30xx; + struct cvmx_usbnx_clk_ctl_cn30xx cn31xx; + /** + * struct cvmx_usbnx_clk_ctl_cn50xx + * @divide2: The 'hclk' used by the USB subsystem is derived + * from the eclk. + * Also see the field DIVIDE. DIVIDE2<1> must currently + * be zero because it is not implemented, so the maximum + * ratio of eclk/hclk is currently 16. + * The actual divide number for hclk is: + * (DIVIDE2 + 1) * (DIVIDE + 1) + * @hclk_rst: When this field is '0' the HCLK-DIVIDER used to + * generate the hclk in the USB Subsystem is held + * in reset. This bit must be set to '0' before + * changing the value os DIVIDE in this register. + * The reset to the HCLK_DIVIDERis also asserted + * when core reset is asserted. + * @p_rtype: PHY reference clock type + * '0' The USB-PHY uses a 12MHz crystal as a clock + * source at the USB_XO and USB_XI pins + * '1' Reserved + * '2' The USB_PHY uses 12/24/48MHz 2.5V board clock + * at the USB_XO pin. USB_XI should be tied to + * ground in this case. + * '3' Reserved + * (bit 14 was P_XENBN on 3xxx) + * (bit 15 was P_RCLK on 3xxx) + * @p_com_on: '0' Force USB-PHY XO Bias, Bandgap and PLL to + * remain powered in Suspend Mode. + * '1' The USB-PHY XO Bias, Bandgap and PLL are + * powered down in suspend mode. + * The value of this field must be set while POR is + * active. + * @p_c_sel: Phy clock speed select. + * Selects the reference clock / crystal frequency. + * '11': Reserved + * '10': 48 MHz (reserved when a crystal is used) + * '01': 24 MHz (reserved when a crystal is used) + * '00': 12 MHz + * The value of this field must be set while POR is + * active. + * NOTE: if a crystal is used as a reference clock, + * this field must be set to 12 MHz. + * @cdiv_byp: Used to enable the bypass input to the USB_CLK_DIV. + * @sd_mode: Scaledown mode for the USBC. Control timing events + * in the USBC, for normal operation this must be '0'. + * @s_bist: Starts bist on the hclk memories, during the '0' + * to '1' transition. + * @por: Power On Reset for the PHY. + * Resets all the PHYS registers and state machines. + * @enable: When '1' allows the generation of the hclk. When + * '0' the hclk will not be generated. SEE DIVIDE + * field of this register. + * @prst: When this field is '0' the reset associated with + * the phy_clk functionality in the USB Subsystem is + * help in reset. This bit should not be set to '1' + * until the time it takes 6 clocks (hclk or phy_clk, + * whichever is slower) has passed. Under normal + * operation once this bit is set to '1' it should not + * be set to '0'. + * @hrst: When this field is '0' the reset associated with + * the hclk functioanlity in the USB Subsystem is + * held in reset.This bit should not be set to '1' + * until 12ms after phy_clk is stable. Under normal + * operation, once this bit is set to '1' it should + * not be set to '0'. + * @divide: The frequency of 'hclk' used by the USB subsystem + * is the eclk frequency divided by the value of + * (DIVIDE2 + 1) * (DIVIDE + 1), also see the field + * DIVIDE2 of this register. + * The hclk frequency should be less than 125Mhz. + * After writing a value to this field the SW should + * read the field for the value written. + * The ENABLE field of this register should not be set + * until AFTER this field is set and then read. + */ + struct cvmx_usbnx_clk_ctl_cn50xx { + uint64_t reserved_20_63 : 44; + uint64_t divide2 : 2; + uint64_t hclk_rst : 1; + uint64_t reserved_16_16 : 1; + uint64_t p_rtype : 2; + uint64_t p_com_on : 1; + uint64_t p_c_sel : 2; + uint64_t cdiv_byp : 1; + uint64_t sd_mode : 2; + uint64_t s_bist : 1; + uint64_t por : 1; + uint64_t enable : 1; + uint64_t prst : 1; + uint64_t hrst : 1; + uint64_t divide : 3; + } cn50xx; + struct cvmx_usbnx_clk_ctl_cn50xx cn52xx; + struct cvmx_usbnx_clk_ctl_cn50xx cn56xx; +}; +typedef union cvmx_usbnx_clk_ctl cvmx_usbnx_clk_ctl_t; + +/** + * cvmx_usbn#_usbp_ctl_status + * + * USBN_USBP_CTL_STATUS = USBP Control And Status Register + * + * Contains general control and status information for the USBN block. + */ +union cvmx_usbnx_usbp_ctl_status { + uint64_t u64; + /** + * struct cvmx_usbnx_usbp_ctl_status_s + * @txrisetune: HS Transmitter Rise/Fall Time Adjustment + * @txvreftune: HS DC Voltage Level Adjustment + * @txfslstune: FS/LS Source Impedence Adjustment + * @txhsxvtune: Transmitter High-Speed Crossover Adjustment + * @sqrxtune: Squelch Threshold Adjustment + * @compdistune: Disconnect Threshold Adjustment + * @otgtune: VBUS Valid Threshold Adjustment + * @otgdisable: OTG Block Disable + * @portreset: Per_Port Reset + * @drvvbus: Drive VBUS + * @lsbist: Low-Speed BIST Enable. + * @fsbist: Full-Speed BIST Enable. + * @hsbist: High-Speed BIST Enable. + * @bist_done: PHY Bist Done. + * Asserted at the end of the PHY BIST sequence. + * @bist_err: PHY Bist Error. + * Indicates an internal error was detected during + * the BIST sequence. + * @tdata_out: PHY Test Data Out. + * Presents either internaly generated signals or + * test register contents, based upon the value of + * test_data_out_sel. + * @siddq: Drives the USBP (USB-PHY) SIDDQ input. + * Normally should be set to zero. + * When customers have no intent to use USB PHY + * interface, they should: + * - still provide 3.3V to USB_VDD33, and + * - tie USB_REXT to 3.3V supply, and + * - set USBN*_USBP_CTL_STATUS[SIDDQ]=1 + * @txpreemphasistune: HS Transmitter Pre-Emphasis Enable + * @dma_bmode: When set to 1 the L2C DMA address will be updated + * with byte-counts between packets. When set to 0 + * the L2C DMA address is incremented to the next + * 4-byte aligned address after adding byte-count. + * @usbc_end: Bigendian input to the USB Core. This should be + * set to '0' for operation. + * @usbp_bist: PHY, This is cleared '0' to run BIST on the USBP. + * @tclk: PHY Test Clock, used to load TDATA_IN to the USBP. + * @dp_pulld: PHY DP_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D+ line. '1' pull down-resistance is connected + * to D+/ '0' pull down resistance is not connected + * to D+. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @dm_pulld: PHY DM_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D- line. '1' pull down-resistance is connected + * to D-. '0' pull down resistance is not connected + * to D-. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @hst_mode: When '0' the USB is acting as HOST, when '1' + * USB is acting as device. This field needs to be + * set while the USB is in reset. + * @tuning: Transmitter Tuning for High-Speed Operation. + * Tunes the current supply and rise/fall output + * times for high-speed operation. + * [20:19] == 11: Current supply increased + * approximately 9% + * [20:19] == 10: Current supply increased + * approximately 4.5% + * [20:19] == 01: Design default. + * [20:19] == 00: Current supply decreased + * approximately 4.5% + * [22:21] == 11: Rise and fall times are increased. + * [22:21] == 10: Design default. + * [22:21] == 01: Rise and fall times are decreased. + * [22:21] == 00: Rise and fall times are decreased + * further as compared to the 01 setting. + * @tx_bs_enh: Transmit Bit Stuffing on [15:8]. + * Enables or disables bit stuffing on data[15:8] + * when bit-stuffing is enabled. + * @tx_bs_en: Transmit Bit Stuffing on [7:0]. + * Enables or disables bit stuffing on data[7:0] + * when bit-stuffing is enabled. + * @loop_enb: PHY Loopback Test Enable. + * '1': During data transmission the receive is + * enabled. + * '0': During data transmission the receive is + * disabled. + * Must be '0' for normal operation. + * @vtest_enb: Analog Test Pin Enable. + * '1' The PHY's analog_test pin is enabled for the + * input and output of applicable analog test signals. + * '0' THe analog_test pin is disabled. + * @bist_enb: Built-In Self Test Enable. + * Used to activate BIST in the PHY. + * @tdata_sel: Test Data Out Select. + * '1' test_data_out[3:0] (PHY) register contents + * are output. '0' internaly generated signals are + * output. + * @taddr_in: Mode Address for Test Interface. + * Specifies the register address for writing to or + * reading from the PHY test interface register. + * @tdata_in: Internal Testing Register Input Data and Select + * This is a test bus. Data is present on [3:0], + * and its corresponding select (enable) is present + * on bits [7:4]. + * @ate_reset: Reset input from automatic test equipment. + * This is a test signal. When the USB Core is + * powered up (not in Susned Mode), an automatic + * tester can use this to disable phy_clock and + * free_clk, then re-eanable them with an aligned + * phase. + * '1': The phy_clk and free_clk outputs are + * disabled. "0": The phy_clock and free_clk outputs + * are available within a specific period after the + * de-assertion. + */ + struct cvmx_usbnx_usbp_ctl_status_s { + uint64_t txrisetune : 1; + uint64_t txvreftune : 4; + uint64_t txfslstune : 4; + uint64_t txhsxvtune : 2; + uint64_t sqrxtune : 3; + uint64_t compdistune : 3; + uint64_t otgtune : 3; + uint64_t otgdisable : 1; + uint64_t portreset : 1; + uint64_t drvvbus : 1; + uint64_t lsbist : 1; + uint64_t fsbist : 1; + uint64_t hsbist : 1; + uint64_t bist_done : 1; + uint64_t bist_err : 1; + uint64_t tdata_out : 4; + uint64_t siddq : 1; + uint64_t txpreemphasistune : 1; + uint64_t dma_bmode : 1; + uint64_t usbc_end : 1; + uint64_t usbp_bist : 1; + uint64_t tclk : 1; + uint64_t dp_pulld : 1; + uint64_t dm_pulld : 1; + uint64_t hst_mode : 1; + uint64_t tuning : 4; + uint64_t tx_bs_enh : 1; + uint64_t tx_bs_en : 1; + uint64_t loop_enb : 1; + uint64_t vtest_enb : 1; + uint64_t bist_enb : 1; + uint64_t tdata_sel : 1; + uint64_t taddr_in : 4; + uint64_t tdata_in : 8; + uint64_t ate_reset : 1; + } s; + /** + * struct cvmx_usbnx_usbp_ctl_status_cn30xx + * @bist_done: PHY Bist Done. + * Asserted at the end of the PHY BIST sequence. + * @bist_err: PHY Bist Error. + * Indicates an internal error was detected during + * the BIST sequence. + * @tdata_out: PHY Test Data Out. + * Presents either internaly generated signals or + * test register contents, based upon the value of + * test_data_out_sel. + * @dma_bmode: When set to 1 the L2C DMA address will be updated + * with byte-counts between packets. When set to 0 + * the L2C DMA address is incremented to the next + * 4-byte aligned address after adding byte-count. + * @usbc_end: Bigendian input to the USB Core. This should be + * set to '0' for operation. + * @usbp_bist: PHY, This is cleared '0' to run BIST on the USBP. + * @tclk: PHY Test Clock, used to load TDATA_IN to the USBP. + * @dp_pulld: PHY DP_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D+ line. '1' pull down-resistance is connected + * to D+/ '0' pull down resistance is not connected + * to D+. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @dm_pulld: PHY DM_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D- line. '1' pull down-resistance is connected + * to D-. '0' pull down resistance is not connected + * to D-. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @hst_mode: When '0' the USB is acting as HOST, when '1' + * USB is acting as device. This field needs to be + * set while the USB is in reset. + * @tuning: Transmitter Tuning for High-Speed Operation. + * Tunes the current supply and rise/fall output + * times for high-speed operation. + * [20:19] == 11: Current supply increased + * approximately 9% + * [20:19] == 10: Current supply increased + * approximately 4.5% + * [20:19] == 01: Design default. + * [20:19] == 00: Current supply decreased + * approximately 4.5% + * [22:21] == 11: Rise and fall times are increased. + * [22:21] == 10: Design default. + * [22:21] == 01: Rise and fall times are decreased. + * [22:21] == 00: Rise and fall times are decreased + * further as compared to the 01 setting. + * @tx_bs_enh: Transmit Bit Stuffing on [15:8]. + * Enables or disables bit stuffing on data[15:8] + * when bit-stuffing is enabled. + * @tx_bs_en: Transmit Bit Stuffing on [7:0]. + * Enables or disables bit stuffing on data[7:0] + * when bit-stuffing is enabled. + * @loop_enb: PHY Loopback Test Enable. + * '1': During data transmission the receive is + * enabled. + * '0': During data transmission the receive is + * disabled. + * Must be '0' for normal operation. + * @vtest_enb: Analog Test Pin Enable. + * '1' The PHY's analog_test pin is enabled for the + * input and output of applicable analog test signals. + * '0' THe analog_test pin is disabled. + * @bist_enb: Built-In Self Test Enable. + * Used to activate BIST in the PHY. + * @tdata_sel: Test Data Out Select. + * '1' test_data_out[3:0] (PHY) register contents + * are output. '0' internaly generated signals are + * output. + * @taddr_in: Mode Address for Test Interface. + * Specifies the register address for writing to or + * reading from the PHY test interface register. + * @tdata_in: Internal Testing Register Input Data and Select + * This is a test bus. Data is present on [3:0], + * and its corresponding select (enable) is present + * on bits [7:4]. + * @ate_reset: Reset input from automatic test equipment. + * This is a test signal. When the USB Core is + * powered up (not in Susned Mode), an automatic + * tester can use this to disable phy_clock and + * free_clk, then re-eanable them with an aligned + * phase. + * '1': The phy_clk and free_clk outputs are + * disabled. "0": The phy_clock and free_clk outputs + * are available within a specific period after the + * de-assertion. + */ + struct cvmx_usbnx_usbp_ctl_status_cn30xx { + uint64_t reserved_38_63 : 26; + uint64_t bist_done : 1; + uint64_t bist_err : 1; + uint64_t tdata_out : 4; + uint64_t reserved_30_31 : 2; + uint64_t dma_bmode : 1; + uint64_t usbc_end : 1; + uint64_t usbp_bist : 1; + uint64_t tclk : 1; + uint64_t dp_pulld : 1; + uint64_t dm_pulld : 1; + uint64_t hst_mode : 1; + uint64_t tuning : 4; + uint64_t tx_bs_enh : 1; + uint64_t tx_bs_en : 1; + uint64_t loop_enb : 1; + uint64_t vtest_enb : 1; + uint64_t bist_enb : 1; + uint64_t tdata_sel : 1; + uint64_t taddr_in : 4; + uint64_t tdata_in : 8; + uint64_t ate_reset : 1; + } cn30xx; + /** + * struct cvmx_usbnx_usbp_ctl_status_cn50xx + * @txrisetune: HS Transmitter Rise/Fall Time Adjustment + * @txvreftune: HS DC Voltage Level Adjustment + * @txfslstune: FS/LS Source Impedence Adjustment + * @txhsxvtune: Transmitter High-Speed Crossover Adjustment + * @sqrxtune: Squelch Threshold Adjustment + * @compdistune: Disconnect Threshold Adjustment + * @otgtune: VBUS Valid Threshold Adjustment + * @otgdisable: OTG Block Disable + * @portreset: Per_Port Reset + * @drvvbus: Drive VBUS + * @lsbist: Low-Speed BIST Enable. + * @fsbist: Full-Speed BIST Enable. + * @hsbist: High-Speed BIST Enable. + * @bist_done: PHY Bist Done. + * Asserted at the end of the PHY BIST sequence. + * @bist_err: PHY Bist Error. + * Indicates an internal error was detected during + * the BIST sequence. + * @tdata_out: PHY Test Data Out. + * Presents either internaly generated signals or + * test register contents, based upon the value of + * test_data_out_sel. + * @txpreemphasistune: HS Transmitter Pre-Emphasis Enable + * @dma_bmode: When set to 1 the L2C DMA address will be updated + * with byte-counts between packets. When set to 0 + * the L2C DMA address is incremented to the next + * 4-byte aligned address after adding byte-count. + * @usbc_end: Bigendian input to the USB Core. This should be + * set to '0' for operation. + * @usbp_bist: PHY, This is cleared '0' to run BIST on the USBP. + * @tclk: PHY Test Clock, used to load TDATA_IN to the USBP. + * @dp_pulld: PHY DP_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D+ line. '1' pull down-resistance is connected + * to D+/ '0' pull down resistance is not connected + * to D+. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @dm_pulld: PHY DM_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D- line. '1' pull down-resistance is connected + * to D-. '0' pull down resistance is not connected + * to D-. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @hst_mode: When '0' the USB is acting as HOST, when '1' + * USB is acting as device. This field needs to be + * set while the USB is in reset. + * @tx_bs_enh: Transmit Bit Stuffing on [15:8]. + * Enables or disables bit stuffing on data[15:8] + * when bit-stuffing is enabled. + * @tx_bs_en: Transmit Bit Stuffing on [7:0]. + * Enables or disables bit stuffing on data[7:0] + * when bit-stuffing is enabled. + * @loop_enb: PHY Loopback Test Enable. + * '1': During data transmission the receive is + * enabled. + * '0': During data transmission the receive is + * disabled. + * Must be '0' for normal operation. + * @vtest_enb: Analog Test Pin Enable. + * '1' The PHY's analog_test pin is enabled for the + * input and output of applicable analog test signals. + * '0' THe analog_test pin is disabled. + * @bist_enb: Built-In Self Test Enable. + * Used to activate BIST in the PHY. + * @tdata_sel: Test Data Out Select. + * '1' test_data_out[3:0] (PHY) register contents + * are output. '0' internaly generated signals are + * output. + * @taddr_in: Mode Address for Test Interface. + * Specifies the register address for writing to or + * reading from the PHY test interface register. + * @tdata_in: Internal Testing Register Input Data and Select + * This is a test bus. Data is present on [3:0], + * and its corresponding select (enable) is present + * on bits [7:4]. + * @ate_reset: Reset input from automatic test equipment. + * This is a test signal. When the USB Core is + * powered up (not in Susned Mode), an automatic + * tester can use this to disable phy_clock and + * free_clk, then re-eanable them with an aligned + * phase. + * '1': The phy_clk and free_clk outputs are + * disabled. "0": The phy_clock and free_clk outputs + * are available within a specific period after the + * de-assertion. + */ + struct cvmx_usbnx_usbp_ctl_status_cn50xx { + uint64_t txrisetune : 1; + uint64_t txvreftune : 4; + uint64_t txfslstune : 4; + uint64_t txhsxvtune : 2; + uint64_t sqrxtune : 3; + uint64_t compdistune : 3; + uint64_t otgtune : 3; + uint64_t otgdisable : 1; + uint64_t portreset : 1; + uint64_t drvvbus : 1; + uint64_t lsbist : 1; + uint64_t fsbist : 1; + uint64_t hsbist : 1; + uint64_t bist_done : 1; + uint64_t bist_err : 1; + uint64_t tdata_out : 4; + uint64_t reserved_31_31 : 1; + uint64_t txpreemphasistune : 1; + uint64_t dma_bmode : 1; + uint64_t usbc_end : 1; + uint64_t usbp_bist : 1; + uint64_t tclk : 1; + uint64_t dp_pulld : 1; + uint64_t dm_pulld : 1; + uint64_t hst_mode : 1; + uint64_t reserved_19_22 : 4; + uint64_t tx_bs_enh : 1; + uint64_t tx_bs_en : 1; + uint64_t loop_enb : 1; + uint64_t vtest_enb : 1; + uint64_t bist_enb : 1; + uint64_t tdata_sel : 1; + uint64_t taddr_in : 4; + uint64_t tdata_in : 8; + uint64_t ate_reset : 1; + } cn50xx; + /** + * struct cvmx_usbnx_usbp_ctl_status_cn52xx + * @txrisetune: HS Transmitter Rise/Fall Time Adjustment + * @txvreftune: HS DC Voltage Level Adjustment + * @txfslstune: FS/LS Source Impedence Adjustment + * @txhsxvtune: Transmitter High-Speed Crossover Adjustment + * @sqrxtune: Squelch Threshold Adjustment + * @compdistune: Disconnect Threshold Adjustment + * @otgtune: VBUS Valid Threshold Adjustment + * @otgdisable: OTG Block Disable + * @portreset: Per_Port Reset + * @drvvbus: Drive VBUS + * @lsbist: Low-Speed BIST Enable. + * @fsbist: Full-Speed BIST Enable. + * @hsbist: High-Speed BIST Enable. + * @bist_done: PHY Bist Done. + * Asserted at the end of the PHY BIST sequence. + * @bist_err: PHY Bist Error. + * Indicates an internal error was detected during + * the BIST sequence. + * @tdata_out: PHY Test Data Out. + * Presents either internaly generated signals or + * test register contents, based upon the value of + * test_data_out_sel. + * @siddq: Drives the USBP (USB-PHY) SIDDQ input. + * Normally should be set to zero. + * When customers have no intent to use USB PHY + * interface, they should: + * - still provide 3.3V to USB_VDD33, and + * - tie USB_REXT to 3.3V supply, and + * - set USBN*_USBP_CTL_STATUS[SIDDQ]=1 + * @txpreemphasistune: HS Transmitter Pre-Emphasis Enable + * @dma_bmode: When set to 1 the L2C DMA address will be updated + * with byte-counts between packets. When set to 0 + * the L2C DMA address is incremented to the next + * 4-byte aligned address after adding byte-count. + * @usbc_end: Bigendian input to the USB Core. This should be + * set to '0' for operation. + * @usbp_bist: PHY, This is cleared '0' to run BIST on the USBP. + * @tclk: PHY Test Clock, used to load TDATA_IN to the USBP. + * @dp_pulld: PHY DP_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D+ line. '1' pull down-resistance is connected + * to D+/ '0' pull down resistance is not connected + * to D+. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @dm_pulld: PHY DM_PULLDOWN input to the USB-PHY. + * This signal enables the pull-down resistance on + * the D- line. '1' pull down-resistance is connected + * to D-. '0' pull down resistance is not connected + * to D-. When an A/B device is acting as a host + * (downstream-facing port), dp_pulldown and + * dm_pulldown are enabled. This must not toggle + * during normal opeartion. + * @hst_mode: When '0' the USB is acting as HOST, when '1' + * USB is acting as device. This field needs to be + * set while the USB is in reset. + * @tx_bs_enh: Transmit Bit Stuffing on [15:8]. + * Enables or disables bit stuffing on data[15:8] + * when bit-stuffing is enabled. + * @tx_bs_en: Transmit Bit Stuffing on [7:0]. + * Enables or disables bit stuffing on data[7:0] + * when bit-stuffing is enabled. + * @loop_enb: PHY Loopback Test Enable. + * '1': During data transmission the receive is + * enabled. + * '0': During data transmission the receive is + * disabled. + * Must be '0' for normal operation. + * @vtest_enb: Analog Test Pin Enable. + * '1' The PHY's analog_test pin is enabled for the + * input and output of applicable analog test signals. + * '0' THe analog_test pin is disabled. + * @bist_enb: Built-In Self Test Enable. + * Used to activate BIST in the PHY. + * @tdata_sel: Test Data Out Select. + * '1' test_data_out[3:0] (PHY) register contents + * are output. '0' internaly generated signals are + * output. + * @taddr_in: Mode Address for Test Interface. + * Specifies the register address for writing to or + * reading from the PHY test interface register. + * @tdata_in: Internal Testing Register Input Data and Select + * This is a test bus. Data is present on [3:0], + * and its corresponding select (enable) is present + * on bits [7:4]. + * @ate_reset: Reset input from automatic test equipment. + * This is a test signal. When the USB Core is + * powered up (not in Susned Mode), an automatic + * tester can use this to disable phy_clock and + * free_clk, then re-eanable them with an aligned + * phase. + * '1': The phy_clk and free_clk outputs are + * disabled. "0": The phy_clock and free_clk outputs + * are available within a specific period after the + * de-assertion. + */ + struct cvmx_usbnx_usbp_ctl_status_cn52xx { + uint64_t txrisetune : 1; + uint64_t txvreftune : 4; + uint64_t txfslstune : 4; + uint64_t txhsxvtune : 2; + uint64_t sqrxtune : 3; + uint64_t compdistune : 3; + uint64_t otgtune : 3; + uint64_t otgdisable : 1; + uint64_t portreset : 1; + uint64_t drvvbus : 1; + uint64_t lsbist : 1; + uint64_t fsbist : 1; + uint64_t hsbist : 1; + uint64_t bist_done : 1; + uint64_t bist_err : 1; + uint64_t tdata_out : 4; + uint64_t siddq : 1; + uint64_t txpreemphasistune : 1; + uint64_t dma_bmode : 1; + uint64_t usbc_end : 1; + uint64_t usbp_bist : 1; + uint64_t tclk : 1; + uint64_t dp_pulld : 1; + uint64_t dm_pulld : 1; + uint64_t hst_mode : 1; + uint64_t reserved_19_22 : 4; + uint64_t tx_bs_enh : 1; + uint64_t tx_bs_en : 1; + uint64_t loop_enb : 1; + uint64_t vtest_enb : 1; + uint64_t bist_enb : 1; + uint64_t tdata_sel : 1; + uint64_t taddr_in : 4; + uint64_t tdata_in : 8; + uint64_t ate_reset : 1; + } cn52xx; +}; +typedef union cvmx_usbnx_usbp_ctl_status cvmx_usbnx_usbp_ctl_status_t; + +#endif diff --git a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c new file mode 100644 index 0000000000..d156b603ae --- /dev/null +++ b/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c @@ -0,0 +1,832 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Cavium Networks + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/usb.h> + +#include <linux/time.h> +#include <linux/delay.h> + +#include <asm/octeon/cvmx.h> +#include "cvmx-usb.h" +#include <asm/octeon/cvmx-iob-defs.h> + +#include <linux/usb/hcd.h> + +#include <linux/err.h> + +struct octeon_hcd { + spinlock_t lock; + cvmx_usb_state_t usb; + struct tasklet_struct dequeue_tasklet; + struct list_head dequeue_list; +}; + +/* convert between an HCD pointer and the corresponding struct octeon_hcd */ +static inline struct octeon_hcd *hcd_to_octeon(struct usb_hcd *hcd) +{ + return (struct octeon_hcd *)(hcd->hcd_priv); +} + +static inline struct usb_hcd *octeon_to_hcd(struct octeon_hcd *p) +{ + return container_of((void *)p, struct usb_hcd, hcd_priv); +} + +static inline struct octeon_hcd *cvmx_usb_to_octeon(cvmx_usb_state_t *p) +{ + return container_of(p, struct octeon_hcd, usb); +} + +static irqreturn_t octeon_usb_irq(struct usb_hcd *hcd) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_poll(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + return IRQ_HANDLED; +} + +static void octeon_usb_port_callback(cvmx_usb_state_t *usb, + cvmx_usb_callback_t reason, + cvmx_usb_complete_t status, + int pipe_handle, + int submit_handle, + int bytes_transferred, + void *user_data) +{ + struct octeon_hcd *priv = cvmx_usb_to_octeon(usb); + + spin_unlock(&priv->lock); + usb_hcd_poll_rh_status(octeon_to_hcd(priv)); + spin_lock(&priv->lock); +} + +static int octeon_usb_start(struct usb_hcd *hcd) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + unsigned long flags; + + hcd->state = HC_STATE_RUNNING; + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_register_callback(&priv->usb, CVMX_USB_CALLBACK_PORT_CHANGED, + octeon_usb_port_callback, NULL); + spin_unlock_irqrestore(&priv->lock, flags); + return 0; +} + +static void octeon_usb_stop(struct usb_hcd *hcd) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_register_callback(&priv->usb, CVMX_USB_CALLBACK_PORT_CHANGED, + NULL, NULL); + spin_unlock_irqrestore(&priv->lock, flags); + hcd->state = HC_STATE_HALT; +} + +static int octeon_usb_get_frame_number(struct usb_hcd *hcd) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + + return cvmx_usb_get_frame_number(&priv->usb); +} + +static void octeon_usb_urb_complete_callback(cvmx_usb_state_t *usb, + cvmx_usb_callback_t reason, + cvmx_usb_complete_t status, + int pipe_handle, + int submit_handle, + int bytes_transferred, + void *user_data) +{ + struct octeon_hcd *priv = cvmx_usb_to_octeon(usb); + struct usb_hcd *hcd = octeon_to_hcd(priv); + struct device *dev = hcd->self.controller; + struct urb *urb = user_data; + + urb->actual_length = bytes_transferred; + urb->hcpriv = NULL; + + if (!list_empty(&urb->urb_list)) { + /* + * It is on the dequeue_list, but we are going to call + * usb_hcd_giveback_urb(), so we must clear it from + * the list. We got to it before the + * octeon_usb_urb_dequeue_work() tasklet did. + */ + list_del(&urb->urb_list); + /* No longer on the dequeue_list. */ + INIT_LIST_HEAD(&urb->urb_list); + } + + /* For Isochronous transactions we need to update the URB packet status + list from data in our private copy */ + if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { + int i; + /* + * The pointer to the private list is stored in the setup_packet + * field. + */ + cvmx_usb_iso_packet_t *iso_packet = (cvmx_usb_iso_packet_t *) urb->setup_packet; + /* Recalculate the transfer size by adding up each packet */ + urb->actual_length = 0; + for (i = 0; i < urb->number_of_packets; i++) { + if (iso_packet[i].status == CVMX_USB_COMPLETE_SUCCESS) { + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = iso_packet[i].length; + urb->actual_length += urb->iso_frame_desc[i].actual_length; + } else { + dev_dbg(dev, "ISOCHRONOUS packet=%d of %d status=%d pipe=%d submit=%d size=%d\n", + i, urb->number_of_packets, + iso_packet[i].status, pipe_handle, + submit_handle, iso_packet[i].length); + urb->iso_frame_desc[i].status = -EREMOTEIO; + } + } + /* Free the private list now that we don't need it anymore */ + kfree(iso_packet); + urb->setup_packet = NULL; + } + + switch (status) { + case CVMX_USB_COMPLETE_SUCCESS: + urb->status = 0; + break; + case CVMX_USB_COMPLETE_CANCEL: + if (urb->status == 0) + urb->status = -ENOENT; + break; + case CVMX_USB_COMPLETE_STALL: + dev_dbg(dev, "status=stall pipe=%d submit=%d size=%d\n", + pipe_handle, submit_handle, bytes_transferred); + urb->status = -EPIPE; + break; + case CVMX_USB_COMPLETE_BABBLEERR: + dev_dbg(dev, "status=babble pipe=%d submit=%d size=%d\n", + pipe_handle, submit_handle, bytes_transferred); + urb->status = -EPIPE; + break; + case CVMX_USB_COMPLETE_SHORT: + dev_dbg(dev, "status=short pipe=%d submit=%d size=%d\n", + pipe_handle, submit_handle, bytes_transferred); + urb->status = -EREMOTEIO; + break; + case CVMX_USB_COMPLETE_ERROR: + case CVMX_USB_COMPLETE_XACTERR: + case CVMX_USB_COMPLETE_DATATGLERR: + case CVMX_USB_COMPLETE_FRAMEERR: + dev_dbg(dev, "status=%d pipe=%d submit=%d size=%d\n", + status, pipe_handle, submit_handle, bytes_transferred); + urb->status = -EPROTO; + break; + } + spin_unlock(&priv->lock); + usb_hcd_giveback_urb(octeon_to_hcd(priv), urb, urb->status); + spin_lock(&priv->lock); +} + +static int octeon_usb_urb_enqueue(struct usb_hcd *hcd, + struct urb *urb, + gfp_t mem_flags) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + struct device *dev = hcd->self.controller; + int submit_handle = -1; + int pipe_handle; + unsigned long flags; + cvmx_usb_iso_packet_t *iso_packet; + struct usb_host_endpoint *ep = urb->ep; + + urb->status = 0; + INIT_LIST_HEAD(&urb->urb_list); /* not enqueued on dequeue_list */ + spin_lock_irqsave(&priv->lock, flags); + + if (!ep->hcpriv) { + cvmx_usb_transfer_t transfer_type; + cvmx_usb_speed_t speed; + int split_device = 0; + int split_port = 0; + switch (usb_pipetype(urb->pipe)) { + case PIPE_ISOCHRONOUS: + transfer_type = CVMX_USB_TRANSFER_ISOCHRONOUS; + break; + case PIPE_INTERRUPT: + transfer_type = CVMX_USB_TRANSFER_INTERRUPT; + break; + case PIPE_CONTROL: + transfer_type = CVMX_USB_TRANSFER_CONTROL; + break; + default: + transfer_type = CVMX_USB_TRANSFER_BULK; + break; + } + switch (urb->dev->speed) { + case USB_SPEED_LOW: + speed = CVMX_USB_SPEED_LOW; + break; + case USB_SPEED_FULL: + speed = CVMX_USB_SPEED_FULL; + break; + default: + speed = CVMX_USB_SPEED_HIGH; + break; + } + /* + * For slow devices on high speed ports we need to find the hub + * that does the speed translation so we know where to send the + * split transactions. + */ + if (speed != CVMX_USB_SPEED_HIGH) { + /* + * Start at this device and work our way up the usb + * tree. + */ + struct usb_device *dev = urb->dev; + while (dev->parent) { + /* + * If our parent is high speed then he'll + * receive the splits. + */ + if (dev->parent->speed == USB_SPEED_HIGH) { + split_device = dev->parent->devnum; + split_port = dev->portnum; + break; + } + /* + * Move up the tree one level. If we make it all + * the way up the tree, then the port must not + * be in high speed mode and we don't need a + * split. + */ + dev = dev->parent; + } + } + pipe_handle = cvmx_usb_open_pipe(&priv->usb, + 0, + usb_pipedevice(urb->pipe), + usb_pipeendpoint(urb->pipe), + speed, + le16_to_cpu(ep->desc.wMaxPacketSize) & 0x7ff, + transfer_type, + usb_pipein(urb->pipe) ? CVMX_USB_DIRECTION_IN : CVMX_USB_DIRECTION_OUT, + urb->interval, + (le16_to_cpu(ep->desc.wMaxPacketSize) >> 11) & 0x3, + split_device, + split_port); + if (pipe_handle < 0) { + spin_unlock_irqrestore(&priv->lock, flags); + dev_dbg(dev, "Failed to create pipe\n"); + return -ENOMEM; + } + ep->hcpriv = (void *)(0x10000L + pipe_handle); + } else { + pipe_handle = 0xffff & (long)ep->hcpriv; + } + + switch (usb_pipetype(urb->pipe)) { + case PIPE_ISOCHRONOUS: + dev_dbg(dev, "Submit isochronous to %d.%d\n", + usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe)); + /* + * Allocate a structure to use for our private list of + * isochronous packets. + */ + iso_packet = kmalloc(urb->number_of_packets * sizeof(cvmx_usb_iso_packet_t), GFP_ATOMIC); + if (iso_packet) { + int i; + /* Fill the list with the data from the URB */ + for (i = 0; i < urb->number_of_packets; i++) { + iso_packet[i].offset = urb->iso_frame_desc[i].offset; + iso_packet[i].length = urb->iso_frame_desc[i].length; + iso_packet[i].status = CVMX_USB_COMPLETE_ERROR; + } + /* + * Store a pointer to the list in the URB setup_packet + * field. We know this currently isn't being used and + * this saves us a bunch of logic. + */ + urb->setup_packet = (char *)iso_packet; + submit_handle = cvmx_usb_submit_isochronous(&priv->usb, pipe_handle, + urb->start_frame, + 0 /* flags */ , + urb->number_of_packets, + iso_packet, + urb->transfer_dma, + urb->transfer_buffer_length, + octeon_usb_urb_complete_callback, + urb); + /* + * If submit failed we need to free our private packet + * list. + */ + if (submit_handle < 0) { + urb->setup_packet = NULL; + kfree(iso_packet); + } + } + break; + case PIPE_INTERRUPT: + dev_dbg(dev, "Submit interrupt to %d.%d\n", + usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe)); + submit_handle = cvmx_usb_submit_interrupt(&priv->usb, pipe_handle, + urb->transfer_dma, + urb->transfer_buffer_length, + octeon_usb_urb_complete_callback, + urb); + break; + case PIPE_CONTROL: + dev_dbg(dev, "Submit control to %d.%d\n", + usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe)); + submit_handle = cvmx_usb_submit_control(&priv->usb, pipe_handle, + urb->setup_dma, + urb->transfer_dma, + urb->transfer_buffer_length, + octeon_usb_urb_complete_callback, + urb); + break; + case PIPE_BULK: + dev_dbg(dev, "Submit bulk to %d.%d\n", + usb_pipedevice(urb->pipe), usb_pipeendpoint(urb->pipe)); + submit_handle = cvmx_usb_submit_bulk(&priv->usb, pipe_handle, + urb->transfer_dma, + urb->transfer_buffer_length, + octeon_usb_urb_complete_callback, + urb); + break; + } + if (submit_handle < 0) { + spin_unlock_irqrestore(&priv->lock, flags); + dev_dbg(dev, "Failed to submit\n"); + return -ENOMEM; + } + urb->hcpriv = (void *)(long)(((submit_handle & 0xffff) << 16) | pipe_handle); + spin_unlock_irqrestore(&priv->lock, flags); + return 0; +} + +static void octeon_usb_urb_dequeue_work(unsigned long arg) +{ + unsigned long flags; + struct octeon_hcd *priv = (struct octeon_hcd *)arg; + + spin_lock_irqsave(&priv->lock, flags); + + while (!list_empty(&priv->dequeue_list)) { + int pipe_handle; + int submit_handle; + struct urb *urb = container_of(priv->dequeue_list.next, struct urb, urb_list); + list_del(&urb->urb_list); + /* not enqueued on dequeue_list */ + INIT_LIST_HEAD(&urb->urb_list); + pipe_handle = 0xffff & (long)urb->hcpriv; + submit_handle = ((long)urb->hcpriv) >> 16; + cvmx_usb_cancel(&priv->usb, pipe_handle, submit_handle); + } + + spin_unlock_irqrestore(&priv->lock, flags); +} + +static int octeon_usb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + unsigned long flags; + + if (!urb->dev) + return -EINVAL; + + spin_lock_irqsave(&priv->lock, flags); + + urb->status = status; + list_add_tail(&urb->urb_list, &priv->dequeue_list); + + spin_unlock_irqrestore(&priv->lock, flags); + + tasklet_schedule(&priv->dequeue_tasklet); + + return 0; +} + +static void octeon_usb_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep) +{ + struct device *dev = hcd->self.controller; + + if (ep->hcpriv) { + struct octeon_hcd *priv = hcd_to_octeon(hcd); + int pipe_handle = 0xffff & (long)ep->hcpriv; + unsigned long flags; + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_cancel_all(&priv->usb, pipe_handle); + if (cvmx_usb_close_pipe(&priv->usb, pipe_handle)) + dev_dbg(dev, "Closing pipe %d failed\n", pipe_handle); + spin_unlock_irqrestore(&priv->lock, flags); + ep->hcpriv = NULL; + } +} + +static int octeon_usb_hub_status_data(struct usb_hcd *hcd, char *buf) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + cvmx_usb_port_status_t port_status; + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + port_status = cvmx_usb_get_status(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + buf[0] = 0; + buf[0] = port_status.connect_change << 1; + + return (buf[0] != 0); +} + +static int octeon_usb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength) +{ + struct octeon_hcd *priv = hcd_to_octeon(hcd); + struct device *dev = hcd->self.controller; + cvmx_usb_port_status_t usb_port_status; + int port_status; + struct usb_hub_descriptor *desc; + unsigned long flags; + + switch (typeReq) { + case ClearHubFeature: + dev_dbg(dev, "ClearHubFeature\n"); + switch (wValue) { + case C_HUB_LOCAL_POWER: + case C_HUB_OVER_CURRENT: + /* Nothing required here */ + break; + default: + return -EINVAL; + } + break; + case ClearPortFeature: + dev_dbg(dev, "ClearPortFeature\n"); + if (wIndex != 1) { + dev_dbg(dev, " INVALID\n"); + return -EINVAL; + } + + switch (wValue) { + case USB_PORT_FEAT_ENABLE: + dev_dbg(dev, " ENABLE\n"); + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_disable(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + break; + case USB_PORT_FEAT_SUSPEND: + dev_dbg(dev, " SUSPEND\n"); + /* Not supported on Octeon */ + break; + case USB_PORT_FEAT_POWER: + dev_dbg(dev, " POWER\n"); + /* Not supported on Octeon */ + break; + case USB_PORT_FEAT_INDICATOR: + dev_dbg(dev, " INDICATOR\n"); + /* Port inidicator not supported */ + break; + case USB_PORT_FEAT_C_CONNECTION: + dev_dbg(dev, " C_CONNECTION\n"); + /* Clears drivers internal connect status change flag */ + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_set_status(&priv->usb, cvmx_usb_get_status(&priv->usb)); + spin_unlock_irqrestore(&priv->lock, flags); + break; + case USB_PORT_FEAT_C_RESET: + dev_dbg(dev, " C_RESET\n"); + /* + * Clears the driver's internal Port Reset Change flag. + */ + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_set_status(&priv->usb, cvmx_usb_get_status(&priv->usb)); + spin_unlock_irqrestore(&priv->lock, flags); + break; + case USB_PORT_FEAT_C_ENABLE: + dev_dbg(dev, " C_ENABLE\n"); + /* + * Clears the driver's internal Port Enable/Disable + * Change flag. + */ + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_set_status(&priv->usb, cvmx_usb_get_status(&priv->usb)); + spin_unlock_irqrestore(&priv->lock, flags); + break; + case USB_PORT_FEAT_C_SUSPEND: + dev_dbg(dev, " C_SUSPEND\n"); + /* + * Clears the driver's internal Port Suspend Change + * flag, which is set when resume signaling on the host + * port is complete. + */ + break; + case USB_PORT_FEAT_C_OVER_CURRENT: + dev_dbg(dev, " C_OVER_CURRENT\n"); + /* Clears the driver's overcurrent Change flag */ + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_set_status(&priv->usb, cvmx_usb_get_status(&priv->usb)); + spin_unlock_irqrestore(&priv->lock, flags); + break; + default: + dev_dbg(dev, " UNKNOWN\n"); + return -EINVAL; + } + break; + case GetHubDescriptor: + dev_dbg(dev, "GetHubDescriptor\n"); + desc = (struct usb_hub_descriptor *)buf; + desc->bDescLength = 9; + desc->bDescriptorType = 0x29; + desc->bNbrPorts = 1; + desc->wHubCharacteristics = 0x08; + desc->bPwrOn2PwrGood = 1; + desc->bHubContrCurrent = 0; + desc->u.hs.DeviceRemovable[0] = 0; + desc->u.hs.DeviceRemovable[1] = 0xff; + break; + case GetHubStatus: + dev_dbg(dev, "GetHubStatus\n"); + *(__le32 *) buf = 0; + break; + case GetPortStatus: + dev_dbg(dev, "GetPortStatus\n"); + if (wIndex != 1) { + dev_dbg(dev, " INVALID\n"); + return -EINVAL; + } + + spin_lock_irqsave(&priv->lock, flags); + usb_port_status = cvmx_usb_get_status(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + port_status = 0; + + if (usb_port_status.connect_change) { + port_status |= (1 << USB_PORT_FEAT_C_CONNECTION); + dev_dbg(dev, " C_CONNECTION\n"); + } + + if (usb_port_status.port_enabled) { + port_status |= (1 << USB_PORT_FEAT_C_ENABLE); + dev_dbg(dev, " C_ENABLE\n"); + } + + if (usb_port_status.connected) { + port_status |= (1 << USB_PORT_FEAT_CONNECTION); + dev_dbg(dev, " CONNECTION\n"); + } + + if (usb_port_status.port_enabled) { + port_status |= (1 << USB_PORT_FEAT_ENABLE); + dev_dbg(dev, " ENABLE\n"); + } + + if (usb_port_status.port_over_current) { + port_status |= (1 << USB_PORT_FEAT_OVER_CURRENT); + dev_dbg(dev, " OVER_CURRENT\n"); + } + + if (usb_port_status.port_powered) { + port_status |= (1 << USB_PORT_FEAT_POWER); + dev_dbg(dev, " POWER\n"); + } + + if (usb_port_status.port_speed == CVMX_USB_SPEED_HIGH) { + port_status |= USB_PORT_STAT_HIGH_SPEED; + dev_dbg(dev, " HIGHSPEED\n"); + } else if (usb_port_status.port_speed == CVMX_USB_SPEED_LOW) { + port_status |= (1 << USB_PORT_FEAT_LOWSPEED); + dev_dbg(dev, " LOWSPEED\n"); + } + + *((__le32 *) buf) = cpu_to_le32(port_status); + break; + case SetHubFeature: + dev_dbg(dev, "SetHubFeature\n"); + /* No HUB features supported */ + break; + case SetPortFeature: + dev_dbg(dev, "SetPortFeature\n"); + if (wIndex != 1) { + dev_dbg(dev, " INVALID\n"); + return -EINVAL; + } + + switch (wValue) { + case USB_PORT_FEAT_SUSPEND: + dev_dbg(dev, " SUSPEND\n"); + return -EINVAL; + case USB_PORT_FEAT_POWER: + dev_dbg(dev, " POWER\n"); + return -EINVAL; + case USB_PORT_FEAT_RESET: + dev_dbg(dev, " RESET\n"); + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_disable(&priv->usb); + if (cvmx_usb_enable(&priv->usb)) + dev_dbg(dev, "Failed to enable the port\n"); + spin_unlock_irqrestore(&priv->lock, flags); + return 0; + case USB_PORT_FEAT_INDICATOR: + dev_dbg(dev, " INDICATOR\n"); + /* Not supported */ + break; + default: + dev_dbg(dev, " UNKNOWN\n"); + return -EINVAL; + } + break; + default: + dev_dbg(dev, "Unknown root hub request\n"); + return -EINVAL; + } + return 0; +} + + +static const struct hc_driver octeon_hc_driver = { + .description = "Octeon USB", + .product_desc = "Octeon Host Controller", + .hcd_priv_size = sizeof(struct octeon_hcd), + .irq = octeon_usb_irq, + .flags = HCD_MEMORY | HCD_USB2, + .start = octeon_usb_start, + .stop = octeon_usb_stop, + .urb_enqueue = octeon_usb_urb_enqueue, + .urb_dequeue = octeon_usb_urb_dequeue, + .endpoint_disable = octeon_usb_endpoint_disable, + .get_frame_number = octeon_usb_get_frame_number, + .hub_status_data = octeon_usb_hub_status_data, + .hub_control = octeon_usb_hub_control, +}; + + +static int octeon_usb_driver_probe(struct device *dev) +{ + int status; + int usb_num = to_platform_device(dev)->id; + int irq = platform_get_irq(to_platform_device(dev), 0); + struct octeon_hcd *priv; + struct usb_hcd *hcd; + unsigned long flags; + + /* + * Set the DMA mask to 64bits so we get buffers already translated for + * DMA. + */ + dev->coherent_dma_mask = ~0; + dev->dma_mask = &dev->coherent_dma_mask; + + hcd = usb_create_hcd(&octeon_hc_driver, dev, dev_name(dev)); + if (!hcd) { + dev_dbg(dev, "Failed to allocate memory for HCD\n"); + return -1; + } + hcd->uses_new_polling = 1; + priv = (struct octeon_hcd *)hcd->hcd_priv; + + spin_lock_init(&priv->lock); + + tasklet_init(&priv->dequeue_tasklet, octeon_usb_urb_dequeue_work, (unsigned long)priv); + INIT_LIST_HEAD(&priv->dequeue_list); + + status = cvmx_usb_initialize(&priv->usb, usb_num, CVMX_USB_INITIALIZE_FLAGS_CLOCK_AUTO); + if (status) { + dev_dbg(dev, "USB initialization failed with %d\n", status); + kfree(hcd); + return -1; + } + + /* This delay is needed for CN3010, but I don't know why... */ + mdelay(10); + + spin_lock_irqsave(&priv->lock, flags); + cvmx_usb_poll(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + + status = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (status) { + dev_dbg(dev, "USB add HCD failed with %d\n", status); + kfree(hcd); + return -1; + } + + dev_dbg(dev, "Registered HCD for port %d on irq %d\n", usb_num, irq); + + return 0; +} + +static int octeon_usb_driver_remove(struct device *dev) +{ + int status; + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct octeon_hcd *priv = hcd_to_octeon(hcd); + unsigned long flags; + + usb_remove_hcd(hcd); + tasklet_kill(&priv->dequeue_tasklet); + spin_lock_irqsave(&priv->lock, flags); + status = cvmx_usb_shutdown(&priv->usb); + spin_unlock_irqrestore(&priv->lock, flags); + if (status) + dev_dbg(dev, "USB shutdown failed with %d\n", status); + + kfree(hcd); + + return 0; +} + +static struct device_driver octeon_usb_driver = { + .name = "OcteonUSB", + .bus = &platform_bus_type, + .probe = octeon_usb_driver_probe, + .remove = octeon_usb_driver_remove, +}; + + +#define MAX_USB_PORTS 10 +static struct platform_device *pdev_glob[MAX_USB_PORTS]; +static int octeon_usb_registered; +static int __init octeon_usb_module_init(void) +{ + int num_devices = cvmx_usb_get_num_ports(); + int device; + + if (usb_disabled() || num_devices == 0) + return -ENODEV; + + if (driver_register(&octeon_usb_driver)) + return -ENOMEM; + + octeon_usb_registered = 1; + + /* + * Only cn52XX and cn56XX have DWC_OTG USB hardware and the + * IOB priority registers. Under heavy network load USB + * hardware can be starved by the IOB causing a crash. Give + * it a priority boost if it has been waiting more than 400 + * cycles to avoid this situation. + * + * Testing indicates that a cnt_val of 8192 is not sufficient, + * but no failures are seen with 4096. We choose a value of + * 400 to give a safety factor of 10. + */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN56XX)) { + union cvmx_iob_n2c_l2c_pri_cnt pri_cnt; + + pri_cnt.u64 = 0; + pri_cnt.s.cnt_enb = 1; + pri_cnt.s.cnt_val = 400; + cvmx_write_csr(CVMX_IOB_N2C_L2C_PRI_CNT, pri_cnt.u64); + } + + for (device = 0; device < num_devices; device++) { + struct resource irq_resource; + struct platform_device *pdev; + memset(&irq_resource, 0, sizeof(irq_resource)); + irq_resource.start = (device == 0) ? OCTEON_IRQ_USB0 : OCTEON_IRQ_USB1; + irq_resource.end = irq_resource.start; + irq_resource.flags = IORESOURCE_IRQ; + pdev = platform_device_register_simple((char *)octeon_usb_driver. name, device, &irq_resource, 1); + if (IS_ERR(pdev)) { + driver_unregister(&octeon_usb_driver); + octeon_usb_registered = 0; + return PTR_ERR(pdev); + } + if (device < MAX_USB_PORTS) + pdev_glob[device] = pdev; + + } + return 0; +} + +static void __exit octeon_usb_module_cleanup(void) +{ + int i; + + for (i = 0; i < MAX_USB_PORTS; i++) + if (pdev_glob[i]) { + platform_device_unregister(pdev_glob[i]); + pdev_glob[i] = NULL; + } + if (octeon_usb_registered) + driver_unregister(&octeon_usb_driver); +} + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>"); +MODULE_DESCRIPTION("Cavium Networks Octeon USB Host driver."); +module_init(octeon_usb_module_init); +module_exit(octeon_usb_module_cleanup); |