drivers/net/atl1/atl1.h

   1 /*
   2  * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
   3  * Copyright(c) 2006 Chris Snook <csnook@redhat.com>
   4  * Copyright(c) 2006 Jay Cliburn <jcliburn@gmail.com>
   5  *
   6  * Derived from Intel e1000 driver
   7  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the Free
  11  * Software Foundation; either version 2 of the License, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program; if not, write to the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  */
  23
  24 #ifndef _ATL1_H_
  25 #define _ATL1_H_
  26
  27 #include <linux/types.h>
  28 #include <linux/if_vlan.h>
  29
  30 #include "atl1_hw.h"
  31
  32 /* function prototypes needed by multiple files */
  33 s32 atl1_up(struct atl1_adapter *adapter);
  34 void atl1_down(struct atl1_adapter *adapter);
  35 int atl1_reset(struct atl1_adapter *adapter);
  36 s32 atl1_setup_ring_resources(struct atl1_adapter *adapter);
  37 void atl1_free_ring_resources(struct atl1_adapter *adapter);
  38
  39 extern char atl1_driver_name[];
  40 extern char atl1_driver_version[];
  41 extern const struct ethtool_ops atl1_ethtool_ops;
  42
  43 struct atl1_adapter;
  44
  45 #define ATL1_MAX_INTR           3
  46
  47 #define ATL1_DEFAULT_TPD        256
  48 #define ATL1_MAX_TPD            1024
  49 #define ATL1_MIN_TPD            64
  50 #define ATL1_DEFAULT_RFD        512
  51 #define ATL1_MIN_RFD            128
  52 #define ATL1_MAX_RFD            2048
  53
  54 #define ATL1_GET_DESC(R, i, type)       (&(((type *)((R)->desc))[i]))
  55 #define ATL1_RFD_DESC(R, i)     ATL1_GET_DESC(R, i, struct rx_free_desc)
  56 #define ATL1_TPD_DESC(R, i)     ATL1_GET_DESC(R, i, struct tx_packet_desc)
  57 #define ATL1_RRD_DESC(R, i)     ATL1_GET_DESC(R, i, struct rx_return_desc)
  58
  59 /*
  60  * Some workarounds require millisecond delays and are run during interrupt
  61  * context.  Most notably, when establishing link, the phy may need tweaking
  62  * but cannot process phy register reads/writes faster than millisecond
  63  * intervals...and we establish link due to a "link status change" interrupt.
  64  */
  65
  66 /*
  67  * wrapper around a pointer to a socket buffer,
  68  * so a DMA handle can be stored along with the buffer
  69  */
  70 struct atl1_buffer {
  71         struct sk_buff *skb;
  72         u16 length;
  73         u16 alloced;
  74         dma_addr_t dma;
  75 };
  76
  77 #define MAX_TX_BUF_LEN          0x3000  /* 12KB */
  78
  79 struct atl1_tpd_ring {
  80         void *desc;             /* pointer to the descriptor ring memory */
  81         dma_addr_t dma;         /* physical adress of the descriptor ring */
  82         u16 size;               /* length of descriptor ring in bytes */
  83         u16 count;              /* number of descriptors in the ring */
  84         u16 hw_idx;             /* hardware index */
  85         atomic_t next_to_clean;
  86         atomic_t next_to_use;
  87         struct atl1_buffer *buffer_info;
  88 };
  89
  90 struct atl1_rfd_ring {
  91         void *desc;
  92         dma_addr_t dma;
  93         u16 size;
  94         u16 count;
  95         atomic_t next_to_use;
  96         u16 next_to_clean;
  97         struct atl1_buffer *buffer_info;
  98 };
  99
 100 struct atl1_rrd_ring {
 101         void *desc;
 102         dma_addr_t dma;
 103         unsigned int size;
 104         u16 count;
 105         u16 next_to_use;
 106         atomic_t next_to_clean;
 107 };
 108
 109 struct atl1_ring_header {
 110         void *desc;             /* pointer to the descriptor ring memory */
 111         dma_addr_t dma;         /* physical adress of the descriptor ring */
 112         unsigned int size;      /* length of descriptor ring in bytes */
 113 };
 114
 115 struct atl1_cmb {
 116         struct coals_msg_block *cmb;
 117         dma_addr_t dma;
 118 };
 119
 120 struct atl1_smb {
 121         struct stats_msg_block *smb;
 122         dma_addr_t dma;
 123 };
 124
 125 /* Statistics counters */
 126 struct atl1_sft_stats {
 127         u64 rx_packets;
 128         u64 tx_packets;
 129         u64 rx_bytes;
 130         u64 tx_bytes;
 131         u64 multicast;
 132         u64 collisions;
 133         u64 rx_errors;
 134         u64 rx_length_errors;
 135         u64 rx_crc_errors;
 136         u64 rx_frame_errors;
 137         u64 rx_fifo_errors;
 138         u64 rx_missed_errors;
 139         u64 tx_errors;
 140         u64 tx_fifo_errors;
 141         u64 tx_aborted_errors;
 142         u64 tx_window_errors;
 143         u64 tx_carrier_errors;
 144
 145         u64 tx_pause;           /* num Pause packet transmitted. */
 146         u64 excecol;            /* num tx packets aborted due to excessive collisions. */
 147         u64 deffer;             /* num deferred tx packets */
 148         u64 scc;                /* num packets subsequently transmitted successfully w/ single prior collision. */
 149         u64 mcc;                /* num packets subsequently transmitted successfully w/ multiple prior collisions. */
 150         u64 latecol;            /* num tx packets  w/ late collisions. */
 151         u64 tx_underun;         /* num tx packets aborted due to transmit FIFO underrun, or TRD FIFO underrun */
 152         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.) */
 153         u64 rx_pause;           /* num Pause packets received. */
 154         u64 rx_rrd_ov;
 155         u64 rx_trunc;
 156 };
 157
 158 /* board specific private data structure */
 159 #define ATL1_REGS_LEN   8
 160
 161 /* Structure containing variables used by the shared code */
 162 struct atl1_hw {
 163         u8 __iomem *hw_addr;
 164         struct atl1_adapter *back;
 165         enum atl1_dma_order dma_ord;
 166         enum atl1_dma_rcb rcb_value;
 167         enum atl1_dma_req_block dmar_block;
 168         enum atl1_dma_req_block dmaw_block;
 169         u8 preamble_len;
 170         u8 max_retry;           /* Retransmission maximum, after which the packet will be discarded */
 171         u8 jam_ipg;             /* IPG to start JAM for collision based flow control in half-duplex mode. In units of 8-bit time */
 172         u8 ipgt;                /* Desired back to back inter-packet gap. The default is 96-bit time */
 173         u8 min_ifg;             /* Minimum number of IFG to enforce in between RX frames. Frame gap below such IFP is dropped */
 174         u8 ipgr1;               /* 64bit Carrier-Sense window */
 175         u8 ipgr2;               /* 96-bit IPG window */
 176         u8 tpd_burst;           /* Number of TPD to prefetch in cache-aligned burst. Each TPD is 16 bytes long */
 177         u8 rfd_burst;           /* Number of RFD to prefetch in cache-aligned burst. Each RFD is 12 bytes long */
 178         u8 rfd_fetch_gap;
 179         u8 rrd_burst;           /* Threshold number of RRDs that can be retired in a burst. Each RRD is 16 bytes long */
 180         u8 tpd_fetch_th;
 181         u8 tpd_fetch_gap;
 182         u16 tx_jumbo_task_th;
 183         u16 txf_burst;          /* Number of data bytes to read in a cache-aligned burst. Each SRAM entry is
 184                                    8 bytes long */
 185         u16 rx_jumbo_th;        /* Jumbo packet size for non-VLAN packet. VLAN packets should add 4 bytes */
 186         u16 rx_jumbo_lkah;
 187         u16 rrd_ret_timer;      /* RRD retirement timer. Decrement by 1 after every 512ns passes. */
 188         u16 lcol;               /* Collision Window */
 189
 190         u16 cmb_tpd;
 191         u16 cmb_rrd;
 192         u16 cmb_rx_timer;
 193         u16 cmb_tx_timer;
 194         u32 smb_timer;
 195         u16 media_type;
 196         u16 autoneg_advertised;
 197         u16 pci_cmd_word;
 198
 199         u16 mii_autoneg_adv_reg;
 200         u16 mii_1000t_ctrl_reg;
 201
 202         u32 mem_rang;
 203         u32 txcw;
 204         u32 max_frame_size;
 205         u32 min_frame_size;
 206         u32 mc_filter_type;
 207         u32 num_mc_addrs;
 208         u32 collision_delta;
 209         u32 tx_packet_delta;
 210         u16 phy_spd_default;
 211
 212         u16 dev_rev;
 213         u8 revision_id;
 214
 215         /* spi flash */
 216         u8 flash_vendor;
 217
 218         u8 dma_fairness;
 219         u8 mac_addr[ETH_ALEN];
 220         u8 perm_mac_addr[ETH_ALEN];
 221
 222         /* bool phy_preamble_sup; */
 223         bool phy_configured;
 224 };
 225
 226 struct atl1_adapter {
 227         /* OS defined structs */
 228         struct net_device *netdev;
 229         struct pci_dev *pdev;
 230         struct net_device_stats net_stats;
 231         struct atl1_sft_stats soft_stats;
 232
 233         struct vlan_group *vlgrp;
 234         u32 rx_buffer_len;
 235         u32 wol;
 236         u16 link_speed;
 237         u16 link_duplex;
 238         spinlock_t lock;
 239         atomic_t irq_sem;
 240         struct work_struct tx_timeout_task;
 241         struct work_struct link_chg_task;
 242         struct work_struct pcie_dma_to_rst_task;
 243         struct timer_list watchdog_timer;
 244         struct timer_list phy_config_timer;
 245         bool phy_timer_pending;
 246
 247         bool mac_disabled;
 248
 249         /* All descriptor rings' memory */
 250         struct atl1_ring_header ring_header;
 251
 252         /* TX */
 253         struct atl1_tpd_ring tpd_ring;
 254         spinlock_t mb_lock;
 255
 256         /* RX */
 257         struct atl1_rfd_ring rfd_ring;
 258         struct atl1_rrd_ring rrd_ring;
 259         u64 hw_csum_err;
 260         u64 hw_csum_good;
 261
 262         u32 gorcl;
 263         u64 gorcl_old;
 264
 265         /* Interrupt Moderator timer ( 2us resolution) */
 266         u16 imt;
 267         /* Interrupt Clear timer (2us resolution) */
 268         u16 ict;
 269
 270         /* MII interface info */
 271         struct mii_if_info mii;
 272
 273         /* structs defined in atl1_hw.h */
 274         u32 bd_number;          /* board number */
 275         bool pci_using_64;
 276         struct atl1_hw hw;
 277         struct atl1_smb smb;
 278         struct atl1_cmb cmb;
 279
 280         u32 pci_state[16];
 281 };
 282
 283 #endif  /* _ATL1_H_ */