1/* SPDX-License-Identifier: GPL-2.0 */ 2/* drivers/atm/midway.h - Efficient Networks Midway (SAR) description */ 3 4/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */ 5 6 7#ifndef DRIVERS_ATM_MIDWAY_H 8#define DRIVERS_ATM_MIDWAY_H 9 10 11#define NR_VCI 1024 /* number of VCIs */ 12#define NR_VCI_LD 10 /* log2(NR_VCI) */ 13#define NR_DMA_RX 512 /* RX DMA queue entries */ 14#define NR_DMA_TX 512 /* TX DMA queue entries */ 15#define NR_SERVICE NR_VCI /* service list size */ 16#define NR_CHAN 8 /* number of TX channels */ 17#define TS_CLOCK 25000000 /* traffic shaper clock (cell/sec) */ 18 19#define MAP_MAX_SIZE 0x00400000 /* memory window for max config */ 20#define EPROM_SIZE 0x00010000 21#define MEM_VALID 0xffc00000 /* mask base address with this */ 22#define PHY_BASE 0x00020000 /* offset of PHY register are */ 23#define REG_BASE 0x00040000 /* offset of Midway register area */ 24#define RAM_BASE 0x00200000 /* offset of RAM area */ 25#define RAM_INCREMENT 0x00020000 /* probe for RAM every 128kB */ 26 27#define MID_VCI_BASE RAM_BASE 28#define MID_DMA_RX_BASE (MID_VCI_BASE+NR_VCI*16) 29#define MID_DMA_TX_BASE (MID_DMA_RX_BASE+NR_DMA_RX*8) 30#define MID_SERVICE_BASE (MID_DMA_TX_BASE+NR_DMA_TX*8) 31#define MID_FREE_BASE (MID_SERVICE_BASE+NR_SERVICE*4) 32 33#define MAC_LEN 6 /* atm.h */ 34 35#define MID_MIN_BUF_SIZE (1024) /* 1 kB is minimum */ 36#define MID_MAX_BUF_SIZE (128*1024) /* 128 kB is maximum */ 37 38#define RX_DESCR_SIZE 1 /* RX PDU descr is 1 longword */ 39#define TX_DESCR_SIZE 2 /* TX PDU descr is 2 longwords */ 40#define AAL5_TRAILER (ATM_AAL5_TRAILER/4) /* AAL5 trailer is 2 longwords */ 41 42#define TX_GAP 8 /* TX buffer gap (words) */ 43 44/* 45 * Midway Reset/ID 46 * 47 * All values read-only. Writing to this register resets Midway chip. 48 */ 49 50#define MID_RES_ID_MCON 0x00 /* Midway Reset/ID */ 51 52#define MID_ID 0xf0000000 /* Midway version */ 53#define MID_SHIFT 24 54#define MID_MOTHER_ID 0x00000700 /* mother board id */ 55#define MID_MOTHER_SHIFT 8 56#define MID_CON_TI 0x00000080 /* 0: normal ctrl; 1: SABRE */ 57#define MID_CON_SUNI 0x00000040 /* 0: UTOPIA; 1: SUNI */ 58#define MID_CON_V6 0x00000020 /* 0: non-pipel UTOPIA (required iff 59 !CON_SUNI; 1: UTOPIA */ 60#define DAUGHTER_ID 0x0000001f /* daughter board id */ 61 62/* 63 * Interrupt Status Acknowledge, Interrupt Status & Interrupt Enable 64 */ 65 66#define MID_ISA 0x01 /* Interrupt Status Acknowledge */ 67#define MID_IS 0x02 /* Interrupt Status */ 68#define MID_IE 0x03 /* Interrupt Enable */ 69 70#define MID_TX_COMPLETE_7 0x00010000 /* channel N completed a PDU */ 71#define MID_TX_COMPLETE_6 0x00008000 /* transmission */ 72#define MID_TX_COMPLETE_5 0x00004000 73#define MID_TX_COMPLETE_4 0x00002000 74#define MID_TX_COMPLETE_3 0x00001000 75#define MID_TX_COMPLETE_2 0x00000800 76#define MID_TX_COMPLETE_1 0x00000400 77#define MID_TX_COMPLETE_0 0x00000200 78#define MID_TX_COMPLETE 0x0001fe00 /* any TX */ 79#define MID_TX_DMA_OVFL 0x00000100 /* DMA to adapter overflow */ 80#define MID_TX_IDENT_MISM 0x00000080 /* TX: ident mismatch => halted */ 81#define MID_DMA_LERR_ACK 0x00000040 /* LERR - SBus ? */ 82#define MID_DMA_ERR_ACK 0x00000020 /* DMA error */ 83#define MID_RX_DMA_COMPLETE 0x00000010 /* DMA to host done */ 84#define MID_TX_DMA_COMPLETE 0x00000008 /* DMA from host done */ 85#define MID_SERVICE 0x00000004 /* something in service list */ 86#define MID_SUNI_INT 0x00000002 /* interrupt from SUNI */ 87#define MID_STAT_OVFL 0x00000001 /* statistics overflow */ 88 89/* 90 * Master Control/Status 91 */ 92 93#define MID_MC_S 0x04 94 95#define MID_INT_SELECT 0x000001C0 /* Interrupt level (000: off) */ 96#define MID_INT_SEL_SHIFT 6 97#define MID_TX_LOCK_MODE 0x00000020 /* 0: streaming; 1: TX ovfl->lock */ 98#define MID_DMA_ENABLE 0x00000010 /* R: 0: disable; 1: enable 99 W: 0: no change; 1: enable */ 100#define MID_TX_ENABLE 0x00000008 /* R: 0: TX disabled; 1: enabled 101 W: 0: no change; 1: enable */ 102#define MID_RX_ENABLE 0x00000004 /* like TX */ 103#define MID_WAIT_1MS 0x00000002 /* R: 0: timer not running; 1: running 104 W: 0: no change; 1: no interrupts 105 for 1 ms */ 106#define MID_WAIT_500US 0x00000001 /* like WAIT_1MS, but 0.5 ms */ 107 108/* 109 * Statistics 110 * 111 * Cleared when reading. 112 */ 113 114#define MID_STAT 0x05 115 116#define MID_VCI_TRASH 0xFFFF0000 /* trashed cells because of VCI mode */ 117#define MID_VCI_TRASH_SHIFT 16 118#define MID_OVFL_TRASH 0x0000FFFF /* trashed cells because of overflow */ 119 120/* 121 * Address registers 122 */ 123 124#define MID_SERV_WRITE 0x06 /* free pos in service area (R, 10 bits) */ 125#define MID_DMA_ADDR 0x07 /* virtual DMA address (R, 32 bits) */ 126#define MID_DMA_WR_RX 0x08 /* (RW, 9 bits) */ 127#define MID_DMA_RD_RX 0x09 128#define MID_DMA_WR_TX 0x0A 129#define MID_DMA_RD_TX 0x0B 130 131/* 132 * Transmit Place Registers (0x10+4*channel) 133 */ 134 135#define MID_TX_PLACE(c) (0x10+4*(c)) 136 137#define MID_SIZE 0x00003800 /* size, N*256 x 32 bit */ 138#define MID_SIZE_SHIFT 11 139#define MID_LOCATION 0x000007FF /* location in adapter memory (word) */ 140 141#define MID_LOC_SKIP 8 /* 8 bits of location are always zero 142 (applies to all uses of location) */ 143 144/* 145 * Transmit ReadPtr Registers (0x11+4*channel) 146 */ 147 148#define MID_TX_RDPTR(c) (0x11+4*(c)) 149 150#define MID_READ_PTR 0x00007FFF /* next word for PHY */ 151 152/* 153 * Transmit DescrStart Registers (0x12+4*channel) 154 */ 155 156#define MID_TX_DESCRSTART(c) (0x12+4*(c)) 157 158#define MID_DESCR_START 0x00007FFF /* seg buffer being DMAed */ 159 160#define ENI155_MAGIC 0xa54b872d 161 162struct midway_eprom { 163 unsigned char mac[MAC_LEN],inv_mac[MAC_LEN]; 164 unsigned char pad[36]; 165 u32 serial,inv_serial; 166 u32 magic,inv_magic; 167}; 168 169 170/* 171 * VCI table entry 172 */ 173 174#define MID_VCI_IN_SERVICE 0x00000001 /* set if VCI is currently in 175 service list */ 176#define MID_VCI_SIZE 0x00038000 /* reassembly buffer size, 177 2*<size> kB */ 178#define MID_VCI_SIZE_SHIFT 15 179#define MID_VCI_LOCATION 0x1ffc0000 /* buffer location */ 180#define MID_VCI_LOCATION_SHIFT 18 181#define MID_VCI_PTI_MODE 0x20000000 /* 0: trash, 1: preserve */ 182#define MID_VCI_MODE 0xc0000000 183#define MID_VCI_MODE_SHIFT 30 184#define MID_VCI_READ 0x00007fff 185#define MID_VCI_READ_SHIFT 0 186#define MID_VCI_DESCR 0x7fff0000 187#define MID_VCI_DESCR_SHIFT 16 188#define MID_VCI_COUNT 0x000007ff 189#define MID_VCI_COUNT_SHIFT 0 190#define MID_VCI_STATE 0x0000c000 191#define MID_VCI_STATE_SHIFT 14 192#define MID_VCI_WRITE 0x7fff0000 193#define MID_VCI_WRITE_SHIFT 16 194 195#define MID_MODE_TRASH 0 196#define MID_MODE_RAW 1 197#define MID_MODE_AAL5 2 198 199/* 200 * Reassembly buffer descriptor 201 */ 202 203#define MID_RED_COUNT 0x000007ff 204#define MID_RED_CRC_ERR 0x00000800 205#define MID_RED_T 0x00001000 206#define MID_RED_CE 0x00010000 207#define MID_RED_CLP 0x01000000 208#define MID_RED_IDEN 0xfe000000 209#define MID_RED_SHIFT 25 210 211#define MID_RED_RX_ID 0x1b /* constant identifier */ 212 213/* 214 * Segmentation buffer descriptor 215 */ 216 217#define MID_SEG_COUNT MID_RED_COUNT 218#define MID_SEG_RATE 0x01f80000 219#define MID_SEG_RATE_SHIFT 19 220#define MID_SEG_PR 0x06000000 221#define MID_SEG_PR_SHIFT 25 222#define MID_SEG_AAL5 0x08000000 223#define MID_SEG_ID 0xf0000000 224#define MID_SEG_ID_SHIFT 28 225#define MID_SEG_MAX_RATE 63 226 227#define MID_SEG_CLP 0x00000001 228#define MID_SEG_PTI 0x0000000e 229#define MID_SEG_PTI_SHIFT 1 230#define MID_SEG_VCI 0x00003ff0 231#define MID_SEG_VCI_SHIFT 4 232 233#define MID_SEG_TX_ID 0xb /* constant identifier */ 234 235/* 236 * DMA entry 237 */ 238 239#define MID_DMA_COUNT 0xffff0000 240#define MID_DMA_COUNT_SHIFT 16 241#define MID_DMA_END 0x00000020 242#define MID_DMA_TYPE 0x0000000f 243 244#define MID_DT_JK 0x3 245#define MID_DT_WORD 0x0 246#define MID_DT_2W 0x7 247#define MID_DT_4W 0x4 248#define MID_DT_8W 0x5 249#define MID_DT_16W 0x6 250#define MID_DT_2WM 0xf 251#define MID_DT_4WM 0xc 252#define MID_DT_8WM 0xd 253#define MID_DT_16WM 0xe 254 255/* only for RX*/ 256#define MID_DMA_VCI 0x0000ffc0 257#define MID_DMA_VCI_SHIFT 6 258 259/* only for TX */ 260#define MID_DMA_CHAN 0x000001c0 261#define MID_DMA_CHAN_SHIFT 6 262 263#define MID_DT_BYTE 0x1 264#define MID_DT_HWORD 0x2 265 266#endif 267