drivers/net/ethernet/pasemi/pasemi_mac.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2006 PA Semi, Inc
   4  *
   5  * Driver for the PA6T-1682M onchip 1G/10G Ethernet MACs, soft state and
   6  * hardware register layouts.
   7  */
   8
   9 #ifndef PASEMI_MAC_H
  10 #define PASEMI_MAC_H
  11
  12 #include <linux/ethtool.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/spinlock.h>
  15 #include <linux/phy.h>
  16
  17 /* Must be a power of two */
  18 #define RX_RING_SIZE 2048
  19 #define TX_RING_SIZE 4096
  20 #define CS_RING_SIZE (TX_RING_SIZE*2)
  21
  22
  23 #define MAX_CS  2
  24
  25 struct pasemi_mac_txring {
  26         struct pasemi_dmachan chan; /* Must be first */
  27         spinlock_t       lock;
  28         unsigned int     size;
  29         unsigned int     next_to_fill;
  30         unsigned int     next_to_clean;
  31         struct pasemi_mac_buffer *ring_info;
  32         struct pasemi_mac *mac; /* Needed in intr handler */
  33         struct timer_list clean_timer;
  34 };
  35
  36 struct pasemi_mac_rxring {
  37         struct pasemi_dmachan chan; /* Must be first */
  38         spinlock_t       lock;
  39         u64             *buffers;       /* RX interface buffer ring */
  40         dma_addr_t       buf_dma;
  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 };
  47
  48 struct pasemi_mac_csring {
  49         struct pasemi_dmachan chan;
  50         unsigned int    size;
  51         unsigned int    next_to_fill;
  52         int             events[2];
  53         int             last_event;
  54         int             fun;
  55 };
  56
  57 struct pasemi_mac {
  58         struct net_device *netdev;
  59         struct pci_dev *pdev;
  60         struct pci_dev *dma_pdev;
  61         struct pci_dev *iob_pdev;
  62         struct napi_struct napi;
  63
  64         int             bufsz; /* RX ring buffer size */
  65         int             last_cs;
  66         int             num_cs;
  67         u32             dma_if;
  68         u8              type;
  69 #define MAC_TYPE_GMAC   1
  70 #define MAC_TYPE_XAUI   2
  71
  72         u8              mac_addr[ETH_ALEN];
  73
  74         struct timer_list       rxtimer;
  75
  76         struct pasemi_mac_txring *tx;
  77         struct pasemi_mac_rxring *rx;
  78         struct pasemi_mac_csring *cs[MAX_CS];
  79         char            tx_irq_name[10];                /* "eth%d tx" */
  80         char            rx_irq_name[10];                /* "eth%d rx" */
  81         int     link;
  82         int     speed;
  83         int     duplex;
  84
  85         unsigned int    msg_enable;
  86 };
  87
  88 /* Software status descriptor (ring_info) */
  89 struct pasemi_mac_buffer {
  90         struct sk_buff *skb;
  91         dma_addr_t      dma;
  92 };
  93
  94 #define TX_DESC(tx, num)        ((tx)->chan.ring_virt[(num) & (TX_RING_SIZE-1)])
  95 #define TX_DESC_INFO(tx, num)   ((tx)->ring_info[(num) & (TX_RING_SIZE-1)])
  96 #define RX_DESC(rx, num)        ((rx)->chan.ring_virt[(num) & (RX_RING_SIZE-1)])
  97 #define RX_DESC_INFO(rx, num)   ((rx)->ring_info[(num) & (RX_RING_SIZE-1)])
  98 #define RX_BUFF(rx, num)        ((rx)->buffers[(num) & (RX_RING_SIZE-1)])
  99 #define CS_DESC(cs, num)        ((cs)->chan.ring_virt[(num) & (CS_RING_SIZE-1)])
 100
 101 #define RING_USED(ring) (((ring)->next_to_fill - (ring)->next_to_clean) \
 102                                 & ((ring)->size - 1))
 103 #define RING_AVAIL(ring)        ((ring->size) - RING_USED(ring))
 104
 105 /* PCI register offsets and formats */
 106
 107
 108 /* MAC CFG register offsets */
 109 enum {
 110         PAS_MAC_CFG_PCFG = 0x80,
 111         PAS_MAC_CFG_MACCFG = 0x84,
 112         PAS_MAC_CFG_ADR0 = 0x8c,
 113         PAS_MAC_CFG_ADR1 = 0x90,
 114         PAS_MAC_CFG_TXP = 0x98,
 115         PAS_MAC_CFG_RMON = 0x100,
 116         PAS_MAC_IPC_CHNL = 0x208,
 117 };
 118
 119 /* MAC CFG register fields */
 120 #define PAS_MAC_CFG_PCFG_PE             0x80000000
 121 #define PAS_MAC_CFG_PCFG_CE             0x40000000
 122 #define PAS_MAC_CFG_PCFG_BU             0x20000000
 123 #define PAS_MAC_CFG_PCFG_TT             0x10000000
 124 #define PAS_MAC_CFG_PCFG_TSR_M          0x0c000000
 125 #define PAS_MAC_CFG_PCFG_TSR_10M        0x00000000
 126 #define PAS_MAC_CFG_PCFG_TSR_100M       0x04000000
 127 #define PAS_MAC_CFG_PCFG_TSR_1G         0x08000000
 128 #define PAS_MAC_CFG_PCFG_TSR_10G        0x0c000000
 129 #define PAS_MAC_CFG_PCFG_T24            0x02000000
 130 #define PAS_MAC_CFG_PCFG_PR             0x01000000
 131 #define PAS_MAC_CFG_PCFG_CRO_M          0x00ff0000
 132 #define PAS_MAC_CFG_PCFG_CRO_S  16
 133 #define PAS_MAC_CFG_PCFG_IPO_M          0x0000ff00
 134 #define PAS_MAC_CFG_PCFG_IPO_S  8
 135 #define PAS_MAC_CFG_PCFG_S1             0x00000080
 136 #define PAS_MAC_CFG_PCFG_IO_M           0x00000060
 137 #define PAS_MAC_CFG_PCFG_IO_MAC         0x00000000
 138 #define PAS_MAC_CFG_PCFG_IO_OFF         0x00000020
 139 #define PAS_MAC_CFG_PCFG_IO_IND_ETH     0x00000040
 140 #define PAS_MAC_CFG_PCFG_IO_IND_IP      0x00000060
 141 #define PAS_MAC_CFG_PCFG_LP             0x00000010
 142 #define PAS_MAC_CFG_PCFG_TS             0x00000008
 143 #define PAS_MAC_CFG_PCFG_HD             0x00000004
 144 #define PAS_MAC_CFG_PCFG_SPD_M          0x00000003
 145 #define PAS_MAC_CFG_PCFG_SPD_10M        0x00000000
 146 #define PAS_MAC_CFG_PCFG_SPD_100M       0x00000001
 147 #define PAS_MAC_CFG_PCFG_SPD_1G         0x00000002
 148 #define PAS_MAC_CFG_PCFG_SPD_10G        0x00000003
 149
 150 #define PAS_MAC_CFG_MACCFG_TXT_M        0x70000000
 151 #define PAS_MAC_CFG_MACCFG_TXT_S        28
 152 #define PAS_MAC_CFG_MACCFG_PRES_M       0x0f000000
 153 #define PAS_MAC_CFG_MACCFG_PRES_S       24
 154 #define PAS_MAC_CFG_MACCFG_MAXF_M       0x00ffff00
 155 #define PAS_MAC_CFG_MACCFG_MAXF_S       8
 156 #define PAS_MAC_CFG_MACCFG_MAXF(x)      (((x) << PAS_MAC_CFG_MACCFG_MAXF_S) & \
 157                                          PAS_MAC_CFG_MACCFG_MAXF_M)
 158 #define PAS_MAC_CFG_MACCFG_MINF_M       0x000000ff
 159 #define PAS_MAC_CFG_MACCFG_MINF_S       0
 160
 161 #define PAS_MAC_CFG_TXP_FCF             0x01000000
 162 #define PAS_MAC_CFG_TXP_FCE             0x00800000
 163 #define PAS_MAC_CFG_TXP_FC              0x00400000
 164 #define PAS_MAC_CFG_TXP_FPC_M           0x00300000
 165 #define PAS_MAC_CFG_TXP_FPC_S           20
 166 #define PAS_MAC_CFG_TXP_FPC(x)          (((x) << PAS_MAC_CFG_TXP_FPC_S) & \
 167                                          PAS_MAC_CFG_TXP_FPC_M)
 168 #define PAS_MAC_CFG_TXP_RT              0x00080000
 169 #define PAS_MAC_CFG_TXP_BL              0x00040000
 170 #define PAS_MAC_CFG_TXP_SL_M            0x00030000
 171 #define PAS_MAC_CFG_TXP_SL_S            16
 172 #define PAS_MAC_CFG_TXP_SL(x)           (((x) << PAS_MAC_CFG_TXP_SL_S) & \
 173                                          PAS_MAC_CFG_TXP_SL_M)
 174 #define PAS_MAC_CFG_TXP_COB_M           0x0000f000
 175 #define PAS_MAC_CFG_TXP_COB_S           12
 176 #define PAS_MAC_CFG_TXP_COB(x)          (((x) << PAS_MAC_CFG_TXP_COB_S) & \
 177                                          PAS_MAC_CFG_TXP_COB_M)
 178 #define PAS_MAC_CFG_TXP_TIFT_M          0x00000f00
 179 #define PAS_MAC_CFG_TXP_TIFT_S          8
 180 #define PAS_MAC_CFG_TXP_TIFT(x)         (((x) << PAS_MAC_CFG_TXP_TIFT_S) & \
 181                                          PAS_MAC_CFG_TXP_TIFT_M)
 182 #define PAS_MAC_CFG_TXP_TIFG_M          0x000000ff
 183 #define PAS_MAC_CFG_TXP_TIFG_S          0
 184 #define PAS_MAC_CFG_TXP_TIFG(x)         (((x) << PAS_MAC_CFG_TXP_TIFG_S) & \
 185                                          PAS_MAC_CFG_TXP_TIFG_M)
 186
 187 #define PAS_MAC_RMON(r)                 (0x100+(r)*4)
 188
 189 #define PAS_MAC_IPC_CHNL_DCHNO_M        0x003f0000
 190 #define PAS_MAC_IPC_CHNL_DCHNO_S        16
 191 #define PAS_MAC_IPC_CHNL_DCHNO(x)       (((x) << PAS_MAC_IPC_CHNL_DCHNO_S) & \
 192                                          PAS_MAC_IPC_CHNL_DCHNO_M)
 193 #define PAS_MAC_IPC_CHNL_BCH_M          0x0000003f
 194 #define PAS_MAC_IPC_CHNL_BCH_S          0
 195 #define PAS_MAC_IPC_CHNL_BCH(x)         (((x) << PAS_MAC_IPC_CHNL_BCH_S) & \
 196                                          PAS_MAC_IPC_CHNL_BCH_M)
 197
 198
 199 #endif /* PASEMI_MAC_H */