linux/drivers/net/pasemi_mac.h
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   1/*
   2 * Copyright (C) 2006 PA Semi, Inc
   3 *
   4 * Driver for the PA6T-1682M onchip 1G/10G Ethernet MACs, soft state and
   5 * hardware register layouts.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 */
  20
  21#ifndef PASEMI_MAC_H
  22#define PASEMI_MAC_H
  23
  24#include <linux/ethtool.h>
  25#include <linux/netdevice.h>
  26#include <linux/spinlock.h>
  27#include <linux/phy.h>
  28
  29/* Must be a power of two */
  30#define RX_RING_SIZE 2048
  31#define TX_RING_SIZE 4096
  32#define CS_RING_SIZE (TX_RING_SIZE*2)
  33
  34
  35#define MAX_LRO_DESCRIPTORS 8
  36#define MAX_CS  2
  37
  38struct pasemi_mac_txring {
  39        struct pasemi_dmachan chan; /* Must be first */
  40        spinlock_t       lock;
  41        unsigned int     size;
  42        unsigned int     next_to_fill;
  43        unsigned int     next_to_clean;
  44        struct pasemi_mac_buffer *ring_info;
  45        struct pasemi_mac *mac; /* Needed in intr handler */
  46        struct timer_list clean_timer;
  47};
  48
  49struct pasemi_mac_rxring {
  50        struct pasemi_dmachan chan; /* Must be first */
  51        spinlock_t       lock;
  52        u64             *buffers;       /* RX interface buffer ring */
  53        dma_addr_t       buf_dma;
  54        unsigned int     size;
  55        unsigned int     next_to_fill;
  56        unsigned int     next_to_clean;
  57        struct pasemi_mac_buffer *ring_info;
  58        struct pasemi_mac *mac; /* Needed in intr handler */
  59};
  60
  61struct pasemi_mac_csring {
  62        struct pasemi_dmachan chan;
  63        unsigned int    size;
  64        unsigned int    next_to_fill;
  65        int             events[2];
  66        int             last_event;
  67        int             fun;
  68};
  69
  70struct pasemi_mac {
  71        struct net_device *netdev;
  72        struct pci_dev *pdev;
  73        struct pci_dev *dma_pdev;
  74        struct pci_dev *iob_pdev;
  75        struct phy_device *phydev;
  76        struct napi_struct napi;
  77
  78        int             bufsz; /* RX ring buffer size */
  79        int             last_cs;
  80        int             num_cs;
  81        u32             dma_if;
  82        u8              type;
  83#define MAC_TYPE_GMAC   1
  84#define MAC_TYPE_XAUI   2
  85
  86        u8              mac_addr[6];
  87
  88        struct net_lro_mgr      lro_mgr;
  89        struct net_lro_desc     lro_desc[MAX_LRO_DESCRIPTORS];
  90        struct timer_list       rxtimer;
  91        unsigned int            lro_max_aggr;
  92
  93        struct pasemi_mac_txring *tx;
  94        struct pasemi_mac_rxring *rx;
  95        struct pasemi_mac_csring *cs[MAX_CS];
  96        char            tx_irq_name[10];                /* "eth%d tx" */
  97        char            rx_irq_name[10];                /* "eth%d rx" */
  98        int     link;
  99        int     speed;
 100        int     duplex;
 101
 102        unsigned int    msg_enable;
 103};
 104
 105/* Software status descriptor (ring_info) */
 106struct pasemi_mac_buffer {
 107        struct sk_buff *skb;
 108        dma_addr_t      dma;
 109};
 110
 111#define TX_DESC(tx, num)        ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
 112#define TX_DESC_INFO(tx, num)   ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
 113#define RX_DESC(rx, num)        ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
 114#define RX_DESC_INFO(rx, num)   ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
 115#define RX_BUFF(rx, num)        ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
 116#define CS_DESC(cs, num)        ((cs)->chan.ring_virt[(num) & (CS_RING_SIZE-1)])
 117
 118#define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \
 119                                & ((ring)->size - 1))
 120#define RING_AVAIL(ring)        ((ring->size) - RING_USED(ring))
 121
 122/* PCI register offsets and formats */
 123
 124
 125/* MAC CFG register offsets */
 126enum {
 127        PAS_MAC_CFG_PCFG = 0x80,
 128        PAS_MAC_CFG_MACCFG = 0x84,
 129        PAS_MAC_CFG_ADR0 = 0x8c,
 130        PAS_MAC_CFG_ADR1 = 0x90,
 131        PAS_MAC_CFG_TXP = 0x98,
 132        PAS_MAC_CFG_RMON = 0x100,
 133        PAS_MAC_IPC_CHNL = 0x208,
 134};
 135
 136/* MAC CFG register fields */
 137#define PAS_MAC_CFG_PCFG_PE             0x80000000
 138#define PAS_MAC_CFG_PCFG_CE             0x40000000
 139#define PAS_MAC_CFG_PCFG_BU             0x20000000
 140#define PAS_MAC_CFG_PCFG_TT             0x10000000
 141#define PAS_MAC_CFG_PCFG_TSR_M          0x0c000000
 142#define PAS_MAC_CFG_PCFG_TSR_10M        0x00000000
 143#define PAS_MAC_CFG_PCFG_TSR_100M       0x04000000
 144#define PAS_MAC_CFG_PCFG_TSR_1G         0x08000000
 145#define PAS_MAC_CFG_PCFG_TSR_10G        0x0c000000
 146#define PAS_MAC_CFG_PCFG_T24            0x02000000
 147#define PAS_MAC_CFG_PCFG_PR             0x01000000
 148#define PAS_MAC_CFG_PCFG_CRO_M          0x00ff0000
 149#define PAS_MAC_CFG_PCFG_CRO_S  16
 150#define PAS_MAC_CFG_PCFG_IPO_M          0x0000ff00
 151#define PAS_MAC_CFG_PCFG_IPO_S  8
 152#define PAS_MAC_CFG_PCFG_S1             0x00000080
 153#define PAS_MAC_CFG_PCFG_IO_M           0x00000060
 154#define PAS_MAC_CFG_PCFG_IO_MAC         0x00000000
 155#define PAS_MAC_CFG_PCFG_IO_OFF         0x00000020
 156#define PAS_MAC_CFG_PCFG_IO_IND_ETH     0x00000040
 157#define PAS_MAC_CFG_PCFG_IO_IND_IP      0x00000060
 158#define PAS_MAC_CFG_PCFG_LP             0x00000010
 159#define PAS_MAC_CFG_PCFG_TS             0x00000008
 160#define PAS_MAC_CFG_PCFG_HD             0x00000004
 161#define PAS_MAC_CFG_PCFG_SPD_M          0x00000003
 162#define PAS_MAC_CFG_PCFG_SPD_10M        0x00000000
 163#define PAS_MAC_CFG_PCFG_SPD_100M       0x00000001
 164#define PAS_MAC_CFG_PCFG_SPD_1G         0x00000002
 165#define PAS_MAC_CFG_PCFG_SPD_10G        0x00000003
 166
 167#define PAS_MAC_CFG_MACCFG_TXT_M        0x70000000
 168#define PAS_MAC_CFG_MACCFG_TXT_S        28
 169#define PAS_MAC_CFG_MACCFG_PRES_M       0x0f000000
 170#define PAS_MAC_CFG_MACCFG_PRES_S       24
 171#define PAS_MAC_CFG_MACCFG_MAXF_M       0x00ffff00
 172#define PAS_MAC_CFG_MACCFG_MAXF_S       8
 173#define PAS_MAC_CFG_MACCFG_MAXF(x)      (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \
 174                                         PAS_MAC_CFG_MACCFG_MAXF_M)
 175#define PAS_MAC_CFG_MACCFG_MINF_M       0x000000ff
 176#define PAS_MAC_CFG_MACCFG_MINF_S       0
 177
 178#define PAS_MAC_CFG_TXP_FCF             0x01000000
 179#define PAS_MAC_CFG_TXP_FCE             0x00800000
 180#define PAS_MAC_CFG_TXP_FC              0x00400000
 181#define PAS_MAC_CFG_TXP_FPC_M           0x00300000
 182#define PAS_MAC_CFG_TXP_FPC_S           20
 183#define PAS_MAC_CFG_TXP_FPC(x)          (((x) << PAS_MAC_CFG_TXP_FPC_S) & \
 184                                         PAS_MAC_CFG_TXP_FPC_M)
 185#define PAS_MAC_CFG_TXP_RT              0x00080000
 186#define PAS_MAC_CFG_TXP_BL              0x00040000
 187#define PAS_MAC_CFG_TXP_SL_M            0x00030000
 188#define PAS_MAC_CFG_TXP_SL_S            16
 189#define PAS_MAC_CFG_TXP_SL(x)           (((x) << PAS_MAC_CFG_TXP_SL_S) & \
 190                                         PAS_MAC_CFG_TXP_SL_M)
 191#define PAS_MAC_CFG_TXP_COB_M           0x0000f000
 192#define PAS_MAC_CFG_TXP_COB_S           12
 193#define PAS_MAC_CFG_TXP_COB(x)          (((x) << PAS_MAC_CFG_TXP_COB_S) & \
 194                                         PAS_MAC_CFG_TXP_COB_M)
 195#define PAS_MAC_CFG_TXP_TIFT_M          0x00000f00
 196#define PAS_MAC_CFG_TXP_TIFT_S          8
 197#define PAS_MAC_CFG_TXP_TIFT(x)         (((x) << PAS_MAC_CFG_TXP_TIFT_S) & \
 198                                         PAS_MAC_CFG_TXP_TIFT_M)
 199#define PAS_MAC_CFG_TXP_TIFG_M          0x000000ff
 200#define PAS_MAC_CFG_TXP_TIFG_S          0
 201#define PAS_MAC_CFG_TXP_TIFG(x)         (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \
 202                                         PAS_MAC_CFG_TXP_TIFG_M)
 203
 204#define PAS_MAC_RMON(r)                 (0x100+(r)*4)
 205
 206#define PAS_MAC_IPC_CHNL_DCHNO_M        0x003f0000
 207#define PAS_MAC_IPC_CHNL_DCHNO_S        16
 208#define PAS_MAC_IPC_CHNL_DCHNO(x)       (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \
 209                                         PAS_MAC_IPC_CHNL_DCHNO_M)
 210#define PAS_MAC_IPC_CHNL_BCH_M          0x0000003f
 211#define PAS_MAC_IPC_CHNL_BCH_S          0
 212#define PAS_MAC_IPC_CHNL_BCH(x)         (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \
 213                                         PAS_MAC_IPC_CHNL_BCH_M)
 214
 215
 216#endif /* PASEMI_MAC_H */
 217