Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* drivers/atm/midway.h - Efficient Networks Midway (SAR) description */ |
| 2 | |
| 3 | /* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */ |
| 4 | |
| 5 | |
| 6 | #ifndef DRIVERS_ATM_MIDWAY_H |
| 7 | #define DRIVERS_ATM_MIDWAY_H |
| 8 | |
| 9 | |
| 10 | #define NR_VCI 1024 /* number of VCIs */ |
| 11 | #define NR_VCI_LD 10 /* log2(NR_VCI) */ |
| 12 | #define NR_DMA_RX 512 /* RX DMA queue entries */ |
| 13 | #define NR_DMA_TX 512 /* TX DMA queue entries */ |
| 14 | #define NR_SERVICE NR_VCI /* service list size */ |
| 15 | #define NR_CHAN 8 /* number of TX channels */ |
| 16 | #define TS_CLOCK 25000000 /* traffic shaper clock (cell/sec) */ |
| 17 | |
| 18 | #define MAP_MAX_SIZE 0x00400000 /* memory window for max config */ |
| 19 | #define EPROM_SIZE 0x00010000 |
| 20 | #define MEM_VALID 0xffc00000 /* mask base address with this */ |
| 21 | #define PHY_BASE 0x00020000 /* offset of PHY register are */ |
| 22 | #define REG_BASE 0x00040000 /* offset of Midway register area */ |
| 23 | #define RAM_BASE 0x00200000 /* offset of RAM area */ |
| 24 | #define RAM_INCREMENT 0x00020000 /* probe for RAM every 128kB */ |
| 25 | |
| 26 | #define MID_VCI_BASE RAM_BASE |
| 27 | #define MID_DMA_RX_BASE (MID_VCI_BASE+NR_VCI*16) |
| 28 | #define MID_DMA_TX_BASE (MID_DMA_RX_BASE+NR_DMA_RX*8) |
| 29 | #define MID_SERVICE_BASE (MID_DMA_TX_BASE+NR_DMA_TX*8) |
| 30 | #define MID_FREE_BASE (MID_SERVICE_BASE+NR_SERVICE*4) |
| 31 | |
| 32 | #define MAC_LEN 6 /* atm.h */ |
| 33 | |
| 34 | #define MID_MIN_BUF_SIZE (1024) /* 1 kB is minimum */ |
| 35 | #define MID_MAX_BUF_SIZE (128*1024) /* 128 kB is maximum */ |
| 36 | |
| 37 | #define RX_DESCR_SIZE 1 /* RX PDU descr is 1 longword */ |
| 38 | #define TX_DESCR_SIZE 2 /* TX PDU descr is 2 longwords */ |
| 39 | #define AAL5_TRAILER (ATM_AAL5_TRAILER/4) /* AAL5 trailer is 2 longwords */ |
| 40 | |
| 41 | #define TX_GAP 8 /* TX buffer gap (words) */ |
| 42 | |
| 43 | /* |
| 44 | * Midway Reset/ID |
| 45 | * |
| 46 | * All values read-only. Writing to this register resets Midway chip. |
| 47 | */ |
| 48 | |
| 49 | #define MID_RES_ID_MCON 0x00 /* Midway Reset/ID */ |
| 50 | |
| 51 | #define MID_ID 0xf0000000 /* Midway version */ |
| 52 | #define MID_SHIFT 24 |
| 53 | #define MID_MOTHER_ID 0x00000700 /* mother board id */ |
| 54 | #define MID_MOTHER_SHIFT 8 |
| 55 | #define MID_CON_TI 0x00000080 /* 0: normal ctrl; 1: SABRE */ |
| 56 | #define MID_CON_SUNI 0x00000040 /* 0: UTOPIA; 1: SUNI */ |
| 57 | #define MID_CON_V6 0x00000020 /* 0: non-pipel UTOPIA (required iff |
| 58 | !CON_SUNI; 1: UTOPIA */ |
| 59 | #define DAUGTHER_ID 0x0000001f /* daugther board id */ |
| 60 | |
| 61 | /* |
| 62 | * Interrupt Status Acknowledge, Interrupt Status & Interrupt Enable |
| 63 | */ |
| 64 | |
| 65 | #define MID_ISA 0x01 /* Interrupt Status Acknowledge */ |
| 66 | #define MID_IS 0x02 /* Interrupt Status */ |
| 67 | #define MID_IE 0x03 /* Interrupt Enable */ |
| 68 | |
| 69 | #define MID_TX_COMPLETE_7 0x00010000 /* channel N completed a PDU */ |
| 70 | #define MID_TX_COMPLETE_6 0x00008000 /* transmission */ |
| 71 | #define MID_TX_COMPLETE_5 0x00004000 |
| 72 | #define MID_TX_COMPLETE_4 0x00002000 |
| 73 | #define MID_TX_COMPLETE_3 0x00001000 |
| 74 | #define MID_TX_COMPLETE_2 0x00000800 |
| 75 | #define MID_TX_COMPLETE_1 0x00000400 |
| 76 | #define MID_TX_COMPLETE_0 0x00000200 |
| 77 | #define MID_TX_COMPLETE 0x0001fe00 /* any TX */ |
| 78 | #define MID_TX_DMA_OVFL 0x00000100 /* DMA to adapter overflow */ |
| 79 | #define MID_TX_IDENT_MISM 0x00000080 /* TX: ident mismatch => halted */ |
| 80 | #define MID_DMA_LERR_ACK 0x00000040 /* LERR - SBus ? */ |
| 81 | #define MID_DMA_ERR_ACK 0x00000020 /* DMA error */ |
| 82 | #define MID_RX_DMA_COMPLETE 0x00000010 /* DMA to host done */ |
| 83 | #define MID_TX_DMA_COMPLETE 0x00000008 /* DMA from host done */ |
| 84 | #define MID_SERVICE 0x00000004 /* something in service list */ |
| 85 | #define MID_SUNI_INT 0x00000002 /* interrupt from SUNI */ |
| 86 | #define MID_STAT_OVFL 0x00000001 /* statistics overflow */ |
| 87 | |
| 88 | /* |
| 89 | * Master Control/Status |
| 90 | */ |
| 91 | |
| 92 | #define MID_MC_S 0x04 |
| 93 | |
| 94 | #define MID_INT_SELECT 0x000001C0 /* Interrupt level (000: off) */ |
| 95 | #define MID_INT_SEL_SHIFT 6 |
| 96 | #define MID_TX_LOCK_MODE 0x00000020 /* 0: streaming; 1: TX ovfl->lock */ |
| 97 | #define MID_DMA_ENABLE 0x00000010 /* R: 0: disable; 1: enable |
| 98 | W: 0: no change; 1: enable */ |
| 99 | #define MID_TX_ENABLE 0x00000008 /* R: 0: TX disabled; 1: enabled |
| 100 | W: 0: no change; 1: enable */ |
| 101 | #define MID_RX_ENABLE 0x00000004 /* like TX */ |
| 102 | #define MID_WAIT_1MS 0x00000002 /* R: 0: timer not running; 1: running |
| 103 | W: 0: no change; 1: no interrupts |
| 104 | for 1 ms */ |
| 105 | #define MID_WAIT_500US 0x00000001 /* like WAIT_1MS, but 0.5 ms */ |
| 106 | |
| 107 | /* |
| 108 | * Statistics |
| 109 | * |
| 110 | * Cleared when reading. |
| 111 | */ |
| 112 | |
| 113 | #define MID_STAT 0x05 |
| 114 | |
| 115 | #define MID_VCI_TRASH 0xFFFF0000 /* trashed cells because of VCI mode */ |
| 116 | #define MID_VCI_TRASH_SHIFT 16 |
| 117 | #define MID_OVFL_TRASH 0x0000FFFF /* trashed cells because of overflow */ |
| 118 | |
| 119 | /* |
| 120 | * Address registers |
| 121 | */ |
| 122 | |
| 123 | #define MID_SERV_WRITE 0x06 /* free pos in service area (R, 10 bits) */ |
| 124 | #define MID_DMA_ADDR 0x07 /* virtual DMA address (R, 32 bits) */ |
| 125 | #define MID_DMA_WR_RX 0x08 /* (RW, 9 bits) */ |
| 126 | #define MID_DMA_RD_RX 0x09 |
| 127 | #define MID_DMA_WR_TX 0x0A |
| 128 | #define MID_DMA_RD_TX 0x0B |
| 129 | |
| 130 | /* |
| 131 | * Transmit Place Registers (0x10+4*channel) |
| 132 | */ |
| 133 | |
| 134 | #define MID_TX_PLACE(c) (0x10+4*(c)) |
| 135 | |
| 136 | #define MID_SIZE 0x00003800 /* size, N*256 x 32 bit */ |
| 137 | #define MID_SIZE_SHIFT 11 |
| 138 | #define MID_LOCATION 0x000007FF /* location in adapter memory (word) */ |
| 139 | |
| 140 | #define MID_LOC_SKIP 8 /* 8 bits of location are always zero |
| 141 | (applies to all uses of location) */ |
| 142 | |
| 143 | /* |
| 144 | * Transmit ReadPtr Registers (0x11+4*channel) |
| 145 | */ |
| 146 | |
| 147 | #define MID_TX_RDPTR(c) (0x11+4*(c)) |
| 148 | |
| 149 | #define MID_READ_PTR 0x00007FFF /* next word for PHY */ |
| 150 | |
| 151 | /* |
| 152 | * Transmit DescrStart Registers (0x12+4*channel) |
| 153 | */ |
| 154 | |
| 155 | #define MID_TX_DESCRSTART(c) (0x12+4*(c)) |
| 156 | |
| 157 | #define MID_DESCR_START 0x00007FFF /* seg buffer being DMAed */ |
| 158 | |
| 159 | #define ENI155_MAGIC 0xa54b872d |
| 160 | |
| 161 | struct midway_eprom { |
| 162 | unsigned char mac[MAC_LEN],inv_mac[MAC_LEN]; |
| 163 | unsigned char pad[36]; |
| 164 | u32 serial,inv_serial; |
| 165 | u32 magic,inv_magic; |
| 166 | }; |
| 167 | |
| 168 | |
| 169 | /* |
| 170 | * VCI table entry |
| 171 | */ |
| 172 | |
| 173 | #define MID_VCI_IN_SERVICE 0x00000001 /* set if VCI is currently in |
| 174 | service list */ |
| 175 | #define MID_VCI_SIZE 0x00038000 /* reassembly buffer size, |
| 176 | 2*<size> kB */ |
| 177 | #define MID_VCI_SIZE_SHIFT 15 |
| 178 | #define MID_VCI_LOCATION 0x1ffc0000 /* buffer location */ |
| 179 | #define MID_VCI_LOCATION_SHIFT 18 |
| 180 | #define MID_VCI_PTI_MODE 0x20000000 /* 0: trash, 1: preserve */ |
| 181 | #define MID_VCI_MODE 0xc0000000 |
| 182 | #define MID_VCI_MODE_SHIFT 30 |
| 183 | #define MID_VCI_READ 0x00007fff |
| 184 | #define MID_VCI_READ_SHIFT 0 |
| 185 | #define MID_VCI_DESCR 0x7fff0000 |
| 186 | #define MID_VCI_DESCR_SHIFT 16 |
| 187 | #define MID_VCI_COUNT 0x000007ff |
| 188 | #define MID_VCI_COUNT_SHIFT 0 |
| 189 | #define MID_VCI_STATE 0x0000c000 |
| 190 | #define MID_VCI_STATE_SHIFT 14 |
| 191 | #define MID_VCI_WRITE 0x7fff0000 |
| 192 | #define MID_VCI_WRITE_SHIFT 16 |
| 193 | |
| 194 | #define MID_MODE_TRASH 0 |
| 195 | #define MID_MODE_RAW 1 |
| 196 | #define MID_MODE_AAL5 2 |
| 197 | |
| 198 | /* |
| 199 | * Reassembly buffer descriptor |
| 200 | */ |
| 201 | |
| 202 | #define MID_RED_COUNT 0x000007ff |
| 203 | #define MID_RED_CRC_ERR 0x00000800 |
| 204 | #define MID_RED_T 0x00001000 |
| 205 | #define MID_RED_CE 0x00010000 |
| 206 | #define MID_RED_CLP 0x01000000 |
| 207 | #define MID_RED_IDEN 0xfe000000 |
| 208 | #define MID_RED_SHIFT 25 |
| 209 | |
| 210 | #define MID_RED_RX_ID 0x1b /* constant identifier */ |
| 211 | |
| 212 | /* |
| 213 | * Segmentation buffer descriptor |
| 214 | */ |
| 215 | |
| 216 | #define MID_SEG_COUNT MID_RED_COUNT |
| 217 | #define MID_SEG_RATE 0x01f80000 |
| 218 | #define MID_SEG_RATE_SHIFT 19 |
| 219 | #define MID_SEG_PR 0x06000000 |
| 220 | #define MID_SEG_PR_SHIFT 25 |
| 221 | #define MID_SEG_AAL5 0x08000000 |
| 222 | #define MID_SEG_ID 0xf0000000 |
| 223 | #define MID_SEG_ID_SHIFT 28 |
| 224 | #define MID_SEG_MAX_RATE 63 |
| 225 | |
| 226 | #define MID_SEG_CLP 0x00000001 |
| 227 | #define MID_SEG_PTI 0x0000000e |
| 228 | #define MID_SEG_PTI_SHIFT 1 |
| 229 | #define MID_SEG_VCI 0x00003ff0 |
| 230 | #define MID_SEG_VCI_SHIFT 4 |
| 231 | |
| 232 | #define MID_SEG_TX_ID 0xb /* constant identifier */ |
| 233 | |
| 234 | /* |
| 235 | * DMA entry |
| 236 | */ |
| 237 | |
| 238 | #define MID_DMA_COUNT 0xffff0000 |
| 239 | #define MID_DMA_COUNT_SHIFT 16 |
| 240 | #define MID_DMA_END 0x00000020 |
| 241 | #define MID_DMA_TYPE 0x0000000f |
| 242 | |
| 243 | #define MID_DT_JK 0x3 |
| 244 | #define MID_DT_WORD 0x0 |
| 245 | #define MID_DT_2W 0x7 |
| 246 | #define MID_DT_4W 0x4 |
| 247 | #define MID_DT_8W 0x5 |
| 248 | #define MID_DT_16W 0x6 |
| 249 | #define MID_DT_2WM 0xf |
| 250 | #define MID_DT_4WM 0xc |
| 251 | #define MID_DT_8WM 0xd |
| 252 | #define MID_DT_16WM 0xe |
| 253 | |
| 254 | /* only for RX*/ |
| 255 | #define MID_DMA_VCI 0x0000ffc0 |
| 256 | #define MID_DMA_VCI_SHIFT 6 |
| 257 | |
| 258 | /* only for TX */ |
| 259 | #define MID_DMA_CHAN 0x000001c0 |
| 260 | #define MID_DMA_CHAN_SHIFT 6 |
| 261 | |
| 262 | #define MID_DT_BYTE 0x1 |
| 263 | #define MID_DT_HWORD 0x2 |
| 264 | |
| 265 | #endif |