linux/drivers/net/ethernet/pasemi/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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#ifndef PASEMI_MAC_H
  21#define PASEMI_MAC_H
  22
  23#include <linux/ethtool.h>
  24#include <linux/netdevice.h>
  25#include <linux/spinlock.h>
  26#include <linux/phy.h>
  27
  28/* Must be a power of two */
  29#define RX_RING_SIZE 2048
  30#define TX_RING_SIZE 4096
  31#define CS_RING_SIZE (TX_RING_SIZE*2)
  32
  33
  34#define MAX_LRO_DESCRIPTORS 8
  35#define MAX_CS  2
  36
  37struct pasemi_mac_txring {
  38        struct pasemi_dmachan chan; /* Must be first */
  39        spinlock_t       lock;
  40        unsigned int     size;
  41        unsigned int     next_to_fill;
  42        unsigned int     next_to_clean;
  43        struct pasemi_mac_buffer *ring_info;
  44        struct pasemi_mac *mac; /* Needed in intr handler */
  45        struct timer_list clean_timer;
  46};
  47
  48struct pasemi_mac_rxring {
  49        struct pasemi_dmachan chan; /* Must be first */
  50        spinlock_t       lock;
  51        u64             *buffers;       /* RX interface buffer ring */
  52        dma_addr_t       buf_dma;
  53        unsigned int     size;
  54        unsigned int     next_to_fill;
  55        unsigned int     next_to_clean;
  56        struct pasemi_mac_buffer *ring_info;
  57        struct pasemi_mac *mac; /* Needed in intr handler */
  58};
  59
  60struct pasemi_mac_csring {
  61        struct pasemi_dmachan chan;
  62        unsigned int    size;
  63        unsigned int    next_to_fill;
  64        int             events[2];
  65        int             last_event;
  66        int             fun;
  67};
  68
  69struct pasemi_mac {
  70        struct net_device *netdev;
  71        struct pci_dev *pdev;
  72        struct pci_dev *dma_pdev;
  73        struct pci_dev *iob_pdev;
  74        struct phy_device *phydev;
  75        struct napi_struct napi;
  76
  77        int             bufsz; /* RX ring buffer size */
  78        int             last_cs;
  79        int             num_cs;
  80        u32             dma_if;
  81        u8              type;
  82#define MAC_TYPE_GMAC   1
  83#define MAC_TYPE_XAUI   2
  84
  85        u8              mac_addr[ETH_ALEN];
  86
  87        struct net_lro_mgr      lro_mgr;
  88        struct net_lro_desc     lro_desc[MAX_LRO_DESCRIPTORS];
  89        struct timer_list       rxtimer;
  90        unsigned int            lro_max_aggr;
  91
  92        struct pasemi_mac_txring *tx;
  93        struct pasemi_mac_rxring *rx;
  94        struct pasemi_mac_csring *cs[MAX_CS];
  95        char            tx_irq_name[10];                /* "eth%d tx" */
  96        char            rx_irq_name[10];                /* "eth%d rx" */
  97        int     link;
  98        int     speed;
  99        int     duplex;
 100
 101        unsigned int    msg_enable;
 102};
 103
 104/* Software status descriptor (ring_info) */
 105struct pasemi_mac_buffer {
 106        struct sk_buff *skb;
 107        dma_addr_t      dma;
 108};
 109
 110#define TX_DESC(tx, num)        ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
 111#define TX_DESC_INFO(tx, num)   ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
 112#define RX_DESC(rx, num)        ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
 113#define RX_DESC_INFO(rx, num)   ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
 114#define RX_BUFF(rx, num)        ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
 115#define CS_DESC(cs, num)        ((cs)->chan.ring_virt[(num) & (CS_RING_SIZE-1)])
 116
 117#define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \
 118                                & ((ring)->size - 1))
 119#define RING_AVAIL(ring)        ((ring->size) - RING_USED(ring))
 120
 121/* PCI register offsets and formats */
 122
 123
 124/* MAC CFG register offsets */
 125enum {
 126        PAS_MAC_CFG_PCFG = 0x80,
 127        PAS_MAC_CFG_MACCFG = 0x84,
 128        PAS_MAC_CFG_ADR0 = 0x8c,
 129        PAS_MAC_CFG_ADR1 = 0x90,
 130        PAS_MAC_CFG_TXP = 0x98,
 131        PAS_MAC_CFG_RMON = 0x100,
 132        PAS_MAC_IPC_CHNL = 0x208,
 133};
 134
 135/* MAC CFG register fields */
 136#define PAS_MAC_CFG_PCFG_PE             0x80000000
 137#define PAS_MAC_CFG_PCFG_CE             0x40000000
 138#define PAS_MAC_CFG_PCFG_BU             0x20000000
 139#define PAS_MAC_CFG_PCFG_TT             0x10000000
 140#define PAS_MAC_CFG_PCFG_TSR_M          0x0c000000
 141#define PAS_MAC_CFG_PCFG_TSR_10M        0x00000000
 142#define PAS_MAC_CFG_PCFG_TSR_100M       0x04000000
 143#define PAS_MAC_CFG_PCFG_TSR_1G         0x08000000
 144#define PAS_MAC_CFG_PCFG_TSR_10G        0x0c000000
 145#define PAS_MAC_CFG_PCFG_T24            0x02000000
 146#define PAS_MAC_CFG_PCFG_PR             0x01000000
 147#define PAS_MAC_CFG_PCFG_CRO_M          0x00ff0000
 148#define PAS_MAC_CFG_PCFG_CRO_S  16
 149#define PAS_MAC_CFG_PCFG_IPO_M          0x0000ff00
 150#define PAS_MAC_CFG_PCFG_IPO_S  8
 151#define PAS_MAC_CFG_PCFG_S1             0x00000080
 152#define PAS_MAC_CFG_PCFG_IO_M           0x00000060
 153#define PAS_MAC_CFG_PCFG_IO_MAC         0x00000000
 154#define PAS_MAC_CFG_PCFG_IO_OFF         0x00000020
 155#define PAS_MAC_CFG_PCFG_IO_IND_ETH     0x00000040
 156#define PAS_MAC_CFG_PCFG_IO_IND_IP      0x00000060
 157#define PAS_MAC_CFG_PCFG_LP             0x00000010
 158#define PAS_MAC_CFG_PCFG_TS             0x00000008
 159#define PAS_MAC_CFG_PCFG_HD             0x00000004
 160#define PAS_MAC_CFG_PCFG_SPD_M          0x00000003
 161#define PAS_MAC_CFG_PCFG_SPD_10M        0x00000000
 162#define PAS_MAC_CFG_PCFG_SPD_100M       0x00000001
 163#define PAS_MAC_CFG_PCFG_SPD_1G         0x00000002
 164#define PAS_MAC_CFG_PCFG_SPD_10G        0x00000003
 165
 166#define PAS_MAC_CFG_MACCFG_TXT_M        0x70000000
 167#define PAS_MAC_CFG_MACCFG_TXT_S        28
 168#define PAS_MAC_CFG_MACCFG_PRES_M       0x0f000000
 169#define PAS_MAC_CFG_MACCFG_PRES_S       24
 170#define PAS_MAC_CFG_MACCFG_MAXF_M       0x00ffff00
 171#define PAS_MAC_CFG_MACCFG_MAXF_S       8
 172#define PAS_MAC_CFG_MACCFG_MAXF(x)      (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \
 173                                         PAS_MAC_CFG_MACCFG_MAXF_M)
 174#define PAS_MAC_CFG_MACCFG_MINF_M       0x000000ff
 175#define PAS_MAC_CFG_MACCFG_MINF_S       0
 176
 177#define PAS_MAC_CFG_TXP_FCF             0x01000000
 178#define PAS_MAC_CFG_TXP_FCE             0x00800000
 179#define PAS_MAC_CFG_TXP_FC              0x00400000
 180#define PAS_MAC_CFG_TXP_FPC_M           0x00300000
 181#define PAS_MAC_CFG_TXP_FPC_S           20
 182#define PAS_MAC_CFG_TXP_FPC(x)          (((x) << PAS_MAC_CFG_TXP_FPC_S) & \
 183                                         PAS_MAC_CFG_TXP_FPC_M)
 184#define PAS_MAC_CFG_TXP_RT              0x00080000
 185#define PAS_MAC_CFG_TXP_BL              0x00040000
 186#define PAS_MAC_CFG_TXP_SL_M            0x00030000
 187#define PAS_MAC_CFG_TXP_SL_S            16
 188#define PAS_MAC_CFG_TXP_SL(x)           (((x) << PAS_MAC_CFG_TXP_SL_S) & \
 189                                         PAS_MAC_CFG_TXP_SL_M)
 190#define PAS_MAC_CFG_TXP_COB_M           0x0000f000
 191#define PAS_MAC_CFG_TXP_COB_S           12
 192#define PAS_MAC_CFG_TXP_COB(x)          (((x) << PAS_MAC_CFG_TXP_COB_S) & \
 193                                         PAS_MAC_CFG_TXP_COB_M)
 194#define PAS_MAC_CFG_TXP_TIFT_M          0x00000f00
 195#define PAS_MAC_CFG_TXP_TIFT_S          8
 196#define PAS_MAC_CFG_TXP_TIFT(x)         (((x) << PAS_MAC_CFG_TXP_TIFT_S) & \
 197                                         PAS_MAC_CFG_TXP_TIFT_M)
 198#define PAS_MAC_CFG_TXP_TIFG_M          0x000000ff
 199#define PAS_MAC_CFG_TXP_TIFG_S          0
 200#define PAS_MAC_CFG_TXP_TIFG(x)         (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \
 201                                         PAS_MAC_CFG_TXP_TIFG_M)
 202
 203#define PAS_MAC_RMON(r)                 (0x100+(r)*4)
 204
 205#define PAS_MAC_IPC_CHNL_DCHNO_M        0x003f0000
 206#define PAS_MAC_IPC_CHNL_DCHNO_S        16
 207#define PAS_MAC_IPC_CHNL_DCHNO(x)       (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \
 208                                         PAS_MAC_IPC_CHNL_DCHNO_M)
 209#define PAS_MAC_IPC_CHNL_BCH_M          0x0000003f
 210#define PAS_MAC_IPC_CHNL_BCH_S          0
 211#define PAS_MAC_IPC_CHNL_BCH(x)         (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \
 212                                         PAS_MAC_IPC_CHNL_BCH_M)
 213
 214
 215#endif /* PASEMI_MAC_H */
 216