diff options
Diffstat (limited to 'target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c')
| -rw-r--r-- | target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c | 832 |
1 files changed, 0 insertions, 832 deletions
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 deleted file mode 100644 index d156b603ae..0000000000 --- a/target/linux/octeon/files-3.10/drivers/staging/octeon-usb/octeon-hcd.c +++ /dev/null @@ -1,832 +0,0 @@ -/* - * 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); |