diff options
Diffstat (limited to 'target/linux/ipq40xx/files/drivers/net/ethernet/qualcomm/essedma/edma.h')
-rw-r--r-- | target/linux/ipq40xx/files/drivers/net/ethernet/qualcomm/essedma/edma.h | 455 |
1 files changed, 455 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/files/drivers/net/ethernet/qualcomm/essedma/edma.h b/target/linux/ipq40xx/files/drivers/net/ethernet/qualcomm/essedma/edma.h new file mode 100644 index 0000000000..015e5f5026 --- /dev/null +++ b/target/linux/ipq40xx/files/drivers/net/ethernet/qualcomm/essedma/edma.h @@ -0,0 +1,455 @@ +/* + * Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved. + * + * Permission to use, copy, modify, and/or distribute this software for + * any purpose with or without fee is hereby granted, provided that the + * above copyright notice and this permission notice appear in all copies. + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _EDMA_H_ +#define _EDMA_H_ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/io.h> +#include <linux/vmalloc.h> +#include <linux/pagemap.h> +#include <linux/smp.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/clk.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/sysctl.h> +#include <linux/phy.h> +#include <linux/of_net.h> +#include <net/checksum.h> +#include <net/ip6_checksum.h> +#include <asm-generic/bug.h> +#include "ess_edma.h" + +#define EDMA_CPU_CORES_SUPPORTED 4 +#define EDMA_MAX_PORTID_SUPPORTED 5 +#define EDMA_MAX_VLAN_SUPPORTED EDMA_MAX_PORTID_SUPPORTED +#define EDMA_MAX_PORTID_BITMAP_INDEX (EDMA_MAX_PORTID_SUPPORTED + 1) +#define EDMA_MAX_PORTID_BITMAP_SUPPORTED 0x1f /* 0001_1111 = 0x1f */ +#define EDMA_MAX_NETDEV_PER_QUEUE 4 /* 3 Netdev per queue, 1 space for indexing */ + +#define EDMA_MAX_RECEIVE_QUEUE 8 +#define EDMA_MAX_TRANSMIT_QUEUE 16 + +/* WAN/LAN adapter number */ +#define EDMA_WAN 0 +#define EDMA_LAN 1 + +/* VLAN tag */ +#define EDMA_LAN_DEFAULT_VLAN 1 +#define EDMA_WAN_DEFAULT_VLAN 2 + +#define EDMA_DEFAULT_GROUP1_VLAN 1 +#define EDMA_DEFAULT_GROUP2_VLAN 2 +#define EDMA_DEFAULT_GROUP3_VLAN 3 +#define EDMA_DEFAULT_GROUP4_VLAN 4 +#define EDMA_DEFAULT_GROUP5_VLAN 5 + +/* Queues exposed to linux kernel */ +#define EDMA_NETDEV_TX_QUEUE 4 +#define EDMA_NETDEV_RX_QUEUE 4 + +/* Number of queues per core */ +#define EDMA_NUM_TXQ_PER_CORE 4 +#define EDMA_NUM_RXQ_PER_CORE 2 + +#define EDMA_TPD_EOP_SHIFT 31 + +#define EDMA_PORT_ID_SHIFT 12 +#define EDMA_PORT_ID_MASK 0x7 + +/* tpd word 3 bit 18-28 */ +#define EDMA_TPD_PORT_BITMAP_SHIFT 18 + +#define EDMA_TPD_FROM_CPU_SHIFT 25 + +#define EDMA_FROM_CPU_MASK 0x80 +#define EDMA_SKB_PRIORITY_MASK 0x38 + +/* TX/RX descriptor ring count */ +/* should be a power of 2 */ +#define EDMA_RX_RING_SIZE 128 +#define EDMA_TX_RING_SIZE 128 + +/* Flags used in paged/non paged mode */ +#define EDMA_RX_HEAD_BUFF_SIZE_JUMBO 256 +#define EDMA_RX_HEAD_BUFF_SIZE 1540 + +/* MAX frame size supported by switch */ +#define EDMA_MAX_JUMBO_FRAME_SIZE 9216 + +/* Configurations */ +#define EDMA_INTR_CLEAR_TYPE 0 +#define EDMA_INTR_SW_IDX_W_TYPE 0 +#define EDMA_FIFO_THRESH_TYPE 0 +#define EDMA_RSS_TYPE 0 +#define EDMA_RX_IMT 0x0020 +#define EDMA_TX_IMT 0x0050 +#define EDMA_TPD_BURST 5 +#define EDMA_TXF_BURST 0x100 +#define EDMA_RFD_BURST 8 +#define EDMA_RFD_THR 16 +#define EDMA_RFD_LTHR 0 + +/* RX/TX per CPU based mask/shift */ +#define EDMA_TX_PER_CPU_MASK 0xF +#define EDMA_RX_PER_CPU_MASK 0x3 +#define EDMA_TX_PER_CPU_MASK_SHIFT 0x2 +#define EDMA_RX_PER_CPU_MASK_SHIFT 0x1 +#define EDMA_TX_CPU_START_SHIFT 0x2 +#define EDMA_RX_CPU_START_SHIFT 0x1 + +/* FLags used in transmit direction */ +#define EDMA_HW_CHECKSUM 0x00000001 +#define EDMA_VLAN_TX_TAG_INSERT_FLAG 0x00000002 +#define EDMA_VLAN_TX_TAG_INSERT_DEFAULT_FLAG 0x00000004 + +#define EDMA_SW_DESC_FLAG_LAST 0x1 +#define EDMA_SW_DESC_FLAG_SKB_HEAD 0x2 +#define EDMA_SW_DESC_FLAG_SKB_FRAG 0x4 +#define EDMA_SW_DESC_FLAG_SKB_FRAGLIST 0x8 +#define EDMA_SW_DESC_FLAG_SKB_NONE 0x10 +#define EDMA_SW_DESC_FLAG_SKB_REUSE 0x20 + + +#define EDMA_MAX_SKB_FRAGS (MAX_SKB_FRAGS + 1) + +/* Ethtool specific list of EDMA supported features */ +#define EDMA_SUPPORTED_FEATURES (SUPPORTED_10baseT_Half \ + | SUPPORTED_10baseT_Full \ + | SUPPORTED_100baseT_Half \ + | SUPPORTED_100baseT_Full \ + | SUPPORTED_1000baseT_Full) + +/* Recevie side atheros Header */ +#define EDMA_RX_ATH_HDR_VERSION 0x2 +#define EDMA_RX_ATH_HDR_VERSION_SHIFT 14 +#define EDMA_RX_ATH_HDR_PRIORITY_SHIFT 11 +#define EDMA_RX_ATH_PORT_TYPE_SHIFT 6 +#define EDMA_RX_ATH_HDR_RSTP_PORT_TYPE 0x4 + +/* Transmit side atheros Header */ +#define EDMA_TX_ATH_HDR_PORT_BITMAP_MASK 0x7F +#define EDMA_TX_ATH_HDR_FROM_CPU_MASK 0x80 +#define EDMA_TX_ATH_HDR_FROM_CPU_SHIFT 7 + +#define EDMA_TXQ_START_CORE0 8 +#define EDMA_TXQ_START_CORE1 12 +#define EDMA_TXQ_START_CORE2 0 +#define EDMA_TXQ_START_CORE3 4 + +#define EDMA_TXQ_IRQ_MASK_CORE0 0x0F00 +#define EDMA_TXQ_IRQ_MASK_CORE1 0xF000 +#define EDMA_TXQ_IRQ_MASK_CORE2 0x000F +#define EDMA_TXQ_IRQ_MASK_CORE3 0x00F0 + +#define EDMA_ETH_HDR_LEN 12 +#define EDMA_ETH_TYPE_MASK 0xFFFF + +#define EDMA_RX_BUFFER_WRITE 16 +#define EDMA_RFD_AVAIL_THR 80 + +#define EDMA_GMAC_NO_MDIO_PHY PHY_MAX_ADDR + +extern int ssdk_rfs_ipct_rule_set(__be32 ip_src, __be32 ip_dst, + __be16 sport, __be16 dport, + uint8_t proto, u16 loadbalance, bool action); +struct edma_ethtool_statistics { + u32 tx_q0_pkt; + u32 tx_q1_pkt; + u32 tx_q2_pkt; + u32 tx_q3_pkt; + u32 tx_q4_pkt; + u32 tx_q5_pkt; + u32 tx_q6_pkt; + u32 tx_q7_pkt; + u32 tx_q8_pkt; + u32 tx_q9_pkt; + u32 tx_q10_pkt; + u32 tx_q11_pkt; + u32 tx_q12_pkt; + u32 tx_q13_pkt; + u32 tx_q14_pkt; + u32 tx_q15_pkt; + u32 tx_q0_byte; + u32 tx_q1_byte; + u32 tx_q2_byte; + u32 tx_q3_byte; + u32 tx_q4_byte; + u32 tx_q5_byte; + u32 tx_q6_byte; + u32 tx_q7_byte; + u32 tx_q8_byte; + u32 tx_q9_byte; + u32 tx_q10_byte; + u32 tx_q11_byte; + u32 tx_q12_byte; + u32 tx_q13_byte; + u32 tx_q14_byte; + u32 tx_q15_byte; + u32 rx_q0_pkt; + u32 rx_q1_pkt; + u32 rx_q2_pkt; + u32 rx_q3_pkt; + u32 rx_q4_pkt; + u32 rx_q5_pkt; + u32 rx_q6_pkt; + u32 rx_q7_pkt; + u32 rx_q0_byte; + u32 rx_q1_byte; + u32 rx_q2_byte; + u32 rx_q3_byte; + u32 rx_q4_byte; + u32 rx_q5_byte; + u32 rx_q6_byte; + u32 rx_q7_byte; + u32 tx_desc_error; + u32 rx_alloc_fail_ctr; +}; + +struct edma_mdio_data { + struct mii_bus *mii_bus; + void __iomem *membase; + int phy_irq[PHY_MAX_ADDR]; +}; + +/* EDMA LINK state */ +enum edma_link_state { + __EDMA_LINKUP, /* Indicate link is UP */ + __EDMA_LINKDOWN /* Indicate link is down */ +}; + +/* EDMA GMAC state */ +enum edma_gmac_state { + __EDMA_UP /* use to indicate GMAC is up */ +}; + +/* edma transmit descriptor */ +struct edma_tx_desc { + __le16 len; /* full packet including CRC */ + __le16 svlan_tag; /* vlan tag */ + __le32 word1; /* byte 4-7 */ + __le32 addr; /* address of buffer */ + __le32 word3; /* byte 12 */ +}; + +/* edma receive return descriptor */ +struct edma_rx_return_desc { + u16 rrd0; + u16 rrd1; + u16 rrd2; + u16 rrd3; + u16 rrd4; + u16 rrd5; + u16 rrd6; + u16 rrd7; +}; + +/* RFD descriptor */ +struct edma_rx_free_desc { + __le32 buffer_addr; /* buffer address */ +}; + +/* edma hw specific data */ +struct edma_hw { + u32 __iomem *hw_addr; /* inner register address */ + struct edma_adapter *adapter; /* netdevice adapter */ + u32 rx_intr_mask; /*rx interrupt mask */ + u32 tx_intr_mask; /* tx interrupt nask */ + u32 misc_intr_mask; /* misc interrupt mask */ + u32 wol_intr_mask; /* wake on lan interrupt mask */ + bool intr_clear_type; /* interrupt clear */ + bool intr_sw_idx_w; /* interrupt software index */ + u32 rx_head_buff_size; /* Rx buffer size */ + u8 rss_type; /* rss protocol type */ +}; + +/* edma_sw_desc stores software descriptor + * SW descriptor has 1:1 map with HW descriptor + */ +struct edma_sw_desc { + struct sk_buff *skb; + dma_addr_t dma; /* dma address */ + u16 length; /* Tx/Rx buffer length */ + u32 flags; +}; + +/* per core related information */ +struct edma_per_cpu_queues_info { + struct napi_struct napi; /* napi associated with the core */ + u32 tx_mask; /* tx interrupt mask */ + u32 rx_mask; /* rx interrupt mask */ + u32 tx_status; /* tx interrupt status */ + u32 rx_status; /* rx interrupt status */ + u32 tx_start; /* tx queue start */ + u32 rx_start; /* rx queue start */ + struct edma_common_info *edma_cinfo; /* edma common info */ +}; + +/* edma specific common info */ +struct edma_common_info { + struct edma_tx_desc_ring *tpd_ring[16]; /* 16 Tx queues */ + struct edma_rfd_desc_ring *rfd_ring[8]; /* 8 Rx queues */ + struct platform_device *pdev; /* device structure */ + struct net_device *netdev[EDMA_MAX_PORTID_SUPPORTED]; + struct net_device *portid_netdev_lookup_tbl[EDMA_MAX_PORTID_BITMAP_INDEX]; + struct ctl_table_header *edma_ctl_table_hdr; + int num_gmac; + struct edma_ethtool_statistics edma_ethstats; /* ethtool stats */ + int num_rx_queues; /* number of rx queue */ + u32 num_tx_queues; /* number of tx queue */ + u32 tx_irq[16]; /* number of tx irq */ + u32 rx_irq[8]; /* number of rx irq */ + u32 from_cpu; /* from CPU TPD field */ + u32 num_rxq_per_core; /* Rx queues per core */ + u32 num_txq_per_core; /* Tx queues per core */ + u16 tx_ring_count; /* Tx ring count */ + u16 rx_ring_count; /* Rx ring*/ + u16 rx_head_buffer_len; /* rx buffer length */ + u16 rx_page_buffer_len; /* rx buffer length */ + u32 page_mode; /* Jumbo frame supported flag */ + u32 fraglist_mode; /* fraglist supported flag */ + struct edma_hw hw; /* edma hw specific structure */ + struct edma_per_cpu_queues_info edma_percpu_info[CONFIG_NR_CPUS]; /* per cpu information */ + spinlock_t stats_lock; /* protect edma stats area for updation */ + struct timer_list edma_stats_timer; + bool is_single_phy; + void __iomem *ess_hw_addr; + struct clk *ess_clk; +}; + +/* transimit packet descriptor (tpd) ring */ +struct edma_tx_desc_ring { + struct netdev_queue *nq[EDMA_MAX_NETDEV_PER_QUEUE]; /* Linux queue index */ + struct net_device *netdev[EDMA_MAX_NETDEV_PER_QUEUE]; + /* Array of netdevs associated with the tpd ring */ + void *hw_desc; /* descriptor ring virtual address */ + struct edma_sw_desc *sw_desc; /* buffer associated with ring */ + int netdev_bmp; /* Bitmap for per-ring netdevs */ + u32 size; /* descriptor ring length in bytes */ + u16 count; /* number of descriptors in the ring */ + dma_addr_t dma; /* descriptor ring physical address */ + u16 sw_next_to_fill; /* next Tx descriptor to fill */ + u16 sw_next_to_clean; /* next Tx descriptor to clean */ +}; + +/* receive free descriptor (rfd) ring */ +struct edma_rfd_desc_ring { + void *hw_desc; /* descriptor ring virtual address */ + struct edma_sw_desc *sw_desc; /* buffer associated with ring */ + u16 size; /* bytes allocated to sw_desc */ + u16 count; /* number of descriptors in the ring */ + dma_addr_t dma; /* descriptor ring physical address */ + u16 sw_next_to_fill; /* next descriptor to fill */ + u16 sw_next_to_clean; /* next descriptor to clean */ + u16 pending_fill; /* fill pending from previous iteration */ +}; + +/* edma_rfs_flter_node - rfs filter node in hash table */ +struct edma_rfs_filter_node { + struct flow_keys keys; + u32 flow_id; /* flow_id of filter provided by kernel */ + u16 filter_id; /* filter id of filter returned by adaptor */ + u16 rq_id; /* desired rq index */ + struct hlist_node node; /* edma rfs list node */ +}; + +/* edma_rfs_flow_tbl - rfs flow table */ +struct edma_rfs_flow_table { + u16 max_num_filter; /* Maximum number of filters edma supports */ + u16 hashtoclean; /* hash table index to clean next */ + int filter_available; /* Number of free filters available */ + struct hlist_head hlist_head[EDMA_RFS_FLOW_ENTRIES]; + spinlock_t rfs_ftab_lock; + struct timer_list expire_rfs; /* timer function for edma_rps_may_expire_flow */ +}; + +/* EDMA net device structure */ +struct edma_adapter { + struct net_device *netdev; /* netdevice */ + struct platform_device *pdev; /* platform device */ + struct edma_common_info *edma_cinfo; /* edma common info */ + struct phy_device *phydev; /* Phy device */ + struct edma_rfs_flow_table rfs; /* edma rfs flow table */ + struct net_device_stats stats; /* netdev statistics */ + set_rfs_filter_callback_t set_rfs_rule; + u32 flags;/* status flags */ + unsigned long state_flags; /* GMAC up/down flags */ + u32 forced_speed; /* link force speed */ + u32 forced_duplex; /* link force duplex */ + u32 link_state; /* phy link state */ + u32 phy_mdio_addr; /* PHY device address on MII interface */ + u32 poll_required; /* check if link polling is required */ + u32 tx_start_offset[CONFIG_NR_CPUS]; /* tx queue start */ + u32 default_vlan_tag; /* vlan tag */ + u32 dp_bitmap; + uint8_t phy_id[MII_BUS_ID_SIZE + 3]; +}; + +int edma_alloc_queues_tx(struct edma_common_info *edma_cinfo); +int edma_alloc_queues_rx(struct edma_common_info *edma_cinfo); +int edma_open(struct net_device *netdev); +int edma_close(struct net_device *netdev); +void edma_free_tx_resources(struct edma_common_info *edma_c_info); +void edma_free_rx_resources(struct edma_common_info *edma_c_info); +int edma_alloc_tx_rings(struct edma_common_info *edma_cinfo); +int edma_alloc_rx_rings(struct edma_common_info *edma_cinfo); +void edma_free_tx_rings(struct edma_common_info *edma_cinfo); +void edma_free_rx_rings(struct edma_common_info *edma_cinfo); +void edma_free_queues(struct edma_common_info *edma_cinfo); +void edma_irq_disable(struct edma_common_info *edma_cinfo); +int edma_reset(struct edma_common_info *edma_cinfo); +int edma_poll(struct napi_struct *napi, int budget); +netdev_tx_t edma_xmit(struct sk_buff *skb, + struct net_device *netdev); +int edma_configure(struct edma_common_info *edma_cinfo); +void edma_irq_enable(struct edma_common_info *edma_cinfo); +void edma_enable_tx_ctrl(struct edma_hw *hw); +void edma_enable_rx_ctrl(struct edma_hw *hw); +void edma_stop_rx_tx(struct edma_hw *hw); +void edma_free_irqs(struct edma_adapter *adapter); +irqreturn_t edma_interrupt(int irq, void *dev); +void edma_write_reg(u16 reg_addr, u32 reg_value); +void edma_read_reg(u16 reg_addr, volatile u32 *reg_value); +struct net_device_stats *edma_get_stats(struct net_device *netdev); +int edma_set_mac_addr(struct net_device *netdev, void *p); +int edma_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb, + u16 rxq, u32 flow_id); +int edma_register_rfs_filter(struct net_device *netdev, + set_rfs_filter_callback_t set_filter); +void edma_flow_may_expire(struct timer_list *t); +void edma_set_ethtool_ops(struct net_device *netdev); +void edma_set_stp_rstp(bool tag); +void edma_assign_ath_hdr_type(int tag); +int edma_get_default_vlan_tag(struct net_device *netdev); +void edma_adjust_link(struct net_device *netdev); +int edma_fill_netdev(struct edma_common_info *edma_cinfo, int qid, int num, int txq_id); +void edma_read_append_stats(struct edma_common_info *edma_cinfo); +void edma_change_tx_coalesce(int usecs); +void edma_change_rx_coalesce(int usecs); +void edma_get_tx_rx_coalesce(u32 *reg_val); +void edma_clear_irq_status(void); +void ess_set_port_status_speed(struct edma_common_info *edma_cinfo, + struct phy_device *phydev, uint8_t port_id); +#endif /* _EDMA_H_ */ |