drivers/net/ethernet/pasemi/pasemi_mac.h

   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
  37 struct 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
  48 struct 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
  60 struct 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
  69 struct 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) */
 105 struct 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 */
 125 enum {
 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 */