diff options
Diffstat (limited to 'drivers/net/atl1/atl1.h')
| -rw-r--r-- | drivers/net/atl1/atl1.h | 156 |
1 files changed, 80 insertions, 76 deletions
diff --git a/drivers/net/atl1/atl1.h b/drivers/net/atl1/atl1.h index df4c1a0071aa..ff4765f6c3de 100644 --- a/drivers/net/atl1/atl1.h +++ b/drivers/net/atl1/atl1.h @@ -43,6 +43,7 @@ extern const struct ethtool_ops atl1_ethtool_ops; struct atl1_adapter; #define ATL1_MAX_INTR 3 +#define ATL1_MAX_TX_BUF_LEN 0x3000 /* 12288 bytes */ #define ATL1_DEFAULT_TPD 256 #define ATL1_MAX_TPD 1024 @@ -57,29 +58,45 @@ struct atl1_adapter; #define ATL1_RRD_DESC(R, i) ATL1_GET_DESC(R, i, struct rx_return_desc) /* + * This detached comment is preserved for documentation purposes only. + * It was originally attached to some code that got deleted, but seems + * important enough to keep around... + * + * <begin detached comment> * Some workarounds require millisecond delays and are run during interrupt * context. Most notably, when establishing link, the phy may need tweaking * but cannot process phy register reads/writes faster than millisecond * intervals...and we establish link due to a "link status change" interrupt. + * <end detached comment> + */ + +/* + * atl1_ring_header represents a single, contiguous block of DMA space + * mapped for the three descriptor rings (tpd, rfd, rrd) and the two + * message blocks (cmb, smb) described below */ +struct atl1_ring_header { + void *desc; /* virtual address */ + dma_addr_t dma; /* physical address*/ + unsigned int size; /* length in bytes */ +}; /* - * wrapper around a pointer to a socket buffer, - * so a DMA handle can be stored along with the buffer + * atl1_buffer is wrapper around a pointer to a socket buffer + * so a DMA handle can be stored along with the skb */ struct atl1_buffer { - struct sk_buff *skb; - u16 length; - u16 alloced; + struct sk_buff *skb; /* socket buffer */ + u16 length; /* rx buffer length */ + u16 alloced; /* 1 if skb allocated */ dma_addr_t dma; }; -#define MAX_TX_BUF_LEN 0x3000 /* 12KB */ - +/* transmit packet descriptor (tpd) ring */ struct atl1_tpd_ring { - void *desc; /* pointer to the descriptor ring memory */ - dma_addr_t dma; /* physical adress of the descriptor ring */ - u16 size; /* length of descriptor ring in bytes */ + void *desc; /* descriptor ring virtual address */ + dma_addr_t dma; /* descriptor ring physical address */ + u16 size; /* descriptor ring length in bytes */ u16 count; /* number of descriptors in the ring */ u16 hw_idx; /* hardware index */ atomic_t next_to_clean; @@ -87,36 +104,34 @@ struct atl1_tpd_ring { struct atl1_buffer *buffer_info; }; +/* receive free descriptor (rfd) ring */ struct atl1_rfd_ring { - void *desc; - dma_addr_t dma; - u16 size; - u16 count; + void *desc; /* descriptor ring virtual address */ + dma_addr_t dma; /* descriptor ring physical address */ + u16 size; /* descriptor ring length in bytes */ + u16 count; /* number of descriptors in the ring */ atomic_t next_to_use; u16 next_to_clean; struct atl1_buffer *buffer_info; }; +/* receive return descriptor (rrd) ring */ struct atl1_rrd_ring { - void *desc; - dma_addr_t dma; - unsigned int size; - u16 count; + void *desc; /* descriptor ring virtual address */ + dma_addr_t dma; /* descriptor ring physical address */ + unsigned int size; /* descriptor ring length in bytes */ + u16 count; /* number of descriptors in the ring */ u16 next_to_use; atomic_t next_to_clean; }; -struct atl1_ring_header { - void *desc; /* pointer to the descriptor ring memory */ - dma_addr_t dma; /* physical adress of the descriptor ring */ - unsigned int size; /* length of descriptor ring in bytes */ -}; - +/* coalescing message block (cmb) */ struct atl1_cmb { struct coals_msg_block *cmb; dma_addr_t dma; }; +/* statistics message block (smb) */ struct atl1_smb { struct stats_msg_block *smb; dma_addr_t dma; @@ -141,24 +156,26 @@ struct atl1_sft_stats { u64 tx_aborted_errors; u64 tx_window_errors; u64 tx_carrier_errors; - - u64 tx_pause; /* num Pause packet transmitted. */ - u64 excecol; /* num tx packets aborted due to excessive collisions. */ - u64 deffer; /* num deferred tx packets */ - u64 scc; /* num packets subsequently transmitted successfully w/ single prior collision. */ - u64 mcc; /* num packets subsequently transmitted successfully w/ multiple prior collisions. */ + u64 tx_pause; /* num pause packets transmitted. */ + u64 excecol; /* num tx packets w/ excessive collisions. */ + u64 deffer; /* num tx packets deferred */ + u64 scc; /* num packets subsequently transmitted + * successfully w/ single prior collision. */ + u64 mcc; /* num packets subsequently transmitted + * successfully w/ multiple prior collisions. */ u64 latecol; /* num tx packets w/ late collisions. */ - u64 tx_underun; /* num tx packets aborted due to transmit FIFO underrun, or TRD FIFO underrun */ - u64 tx_trunc; /* num tx packets truncated due to size exceeding MTU, regardless whether truncated by Selene or not. (The name doesn't really reflect the meaning in this case.) */ + u64 tx_underun; /* num tx packets aborted due to transmit + * FIFO underrun, or TRD FIFO underrun */ + u64 tx_trunc; /* num tx packets truncated due to size + * exceeding MTU, regardless whether truncated + * by the chip or not. (The name doesn't really + * reflect the meaning in this case.) */ u64 rx_pause; /* num Pause packets received. */ u64 rx_rrd_ov; u64 rx_trunc; }; -/* board specific private data structure */ -#define ATL1_REGS_LEN 8 - -/* Structure containing variables used by the shared code */ +/* hardware structure */ struct atl1_hw { u8 __iomem *hw_addr; struct atl1_adapter *back; @@ -167,24 +184,35 @@ struct atl1_hw { enum atl1_dma_req_block dmar_block; enum atl1_dma_req_block dmaw_block; u8 preamble_len; - u8 max_retry; /* Retransmission maximum, after which the packet will be discarded */ - u8 jam_ipg; /* IPG to start JAM for collision based flow control in half-duplex mode. In units of 8-bit time */ - u8 ipgt; /* Desired back to back inter-packet gap. The default is 96-bit time */ - u8 min_ifg; /* Minimum number of IFG to enforce in between RX frames. Frame gap below such IFP is dropped */ + u8 max_retry; /* Retransmission maximum, after which the + * packet will be discarded */ + u8 jam_ipg; /* IPG to start JAM for collision based flow + * control in half-duplex mode. In units of + * 8-bit time */ + u8 ipgt; /* Desired back to back inter-packet gap. + * The default is 96-bit time */ + u8 min_ifg; /* Minimum number of IFG to enforce in between + * receive frames. Frame gap below such IFP + * is dropped */ u8 ipgr1; /* 64bit Carrier-Sense window */ u8 ipgr2; /* 96-bit IPG window */ - u8 tpd_burst; /* Number of TPD to prefetch in cache-aligned burst. Each TPD is 16 bytes long */ - u8 rfd_burst; /* Number of RFD to prefetch in cache-aligned burst. Each RFD is 12 bytes long */ + u8 tpd_burst; /* Number of TPD to prefetch in cache-aligned + * burst. Each TPD is 16 bytes long */ + u8 rfd_burst; /* Number of RFD to prefetch in cache-aligned + * burst. Each RFD is 12 bytes long */ u8 rfd_fetch_gap; - u8 rrd_burst; /* Threshold number of RRDs that can be retired in a burst. Each RRD is 16 bytes long */ + u8 rrd_burst; /* Threshold number of RRDs that can be retired + * in a burst. Each RRD is 16 bytes long */ u8 tpd_fetch_th; u8 tpd_fetch_gap; u16 tx_jumbo_task_th; - u16 txf_burst; /* Number of data bytes to read in a cache-aligned burst. Each SRAM entry is - 8 bytes long */ - u16 rx_jumbo_th; /* Jumbo packet size for non-VLAN packet. VLAN packets should add 4 bytes */ + u16 txf_burst; /* Number of data bytes to read in a cache- + * aligned burst. Each SRAM entry is 8 bytes */ + u16 rx_jumbo_th; /* Jumbo packet size for non-VLAN packet. VLAN + * packets should add 4 bytes */ u16 rx_jumbo_lkah; - u16 rrd_ret_timer; /* RRD retirement timer. Decrement by 1 after every 512ns passes. */ + u16 rrd_ret_timer; /* RRD retirement timer. Decrement by 1 after + * every 512ns passes. */ u16 lcol; /* Collision Window */ u16 cmb_tpd; @@ -194,48 +222,35 @@ struct atl1_hw { u32 smb_timer; u16 media_type; u16 autoneg_advertised; - u16 pci_cmd_word; u16 mii_autoneg_adv_reg; u16 mii_1000t_ctrl_reg; - u32 mem_rang; - u32 txcw; u32 max_frame_size; u32 min_frame_size; - u32 mc_filter_type; - u32 num_mc_addrs; - u32 collision_delta; - u32 tx_packet_delta; - u16 phy_spd_default; u16 dev_rev; /* spi flash */ u8 flash_vendor; - u8 dma_fairness; u8 mac_addr[ETH_ALEN]; u8 perm_mac_addr[ETH_ALEN]; - /* bool phy_preamble_sup; */ bool phy_configured; }; struct atl1_adapter { - /* OS defined structs */ struct net_device *netdev; struct pci_dev *pdev; struct net_device_stats net_stats; struct atl1_sft_stats soft_stats; - struct vlan_group *vlgrp; u32 rx_buffer_len; u32 wol; u16 link_speed; u16 link_duplex; spinlock_t lock; - atomic_t irq_sem; struct work_struct tx_timeout_task; struct work_struct link_chg_task; struct work_struct pcie_dma_to_rst_task; @@ -243,9 +258,7 @@ struct atl1_adapter { struct timer_list phy_config_timer; bool phy_timer_pending; - bool mac_disabled; - - /* All descriptor rings' memory */ + /* all descriptor rings' memory */ struct atl1_ring_header ring_header; /* TX */ @@ -258,25 +271,16 @@ struct atl1_adapter { u64 hw_csum_err; u64 hw_csum_good; - u32 gorcl; - u64 gorcl_old; - - /* Interrupt Moderator timer ( 2us resolution) */ - u16 imt; - /* Interrupt Clear timer (2us resolution) */ - u16 ict; - - /* MII interface info */ - struct mii_if_info mii; + u16 imt; /* interrupt moderator timer (2us resolution */ + u16 ict; /* interrupt clear timer (2us resolution */ + struct mii_if_info mii; /* MII interface info */ /* structs defined in atl1_hw.h */ - u32 bd_number; /* board number */ + u32 bd_number; /* board number */ bool pci_using_64; struct atl1_hw hw; struct atl1_smb smb; struct atl1_cmb cmb; - - u32 pci_state[16]; }; #endif /* _ATL1_H_ */ |