Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 | /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * hpc3.h: Definitions for SGI HPC3 controller * * Copyright (C) 1996 David S. Miller * Copyright (C) 1998 Ralf Baechle */ #ifndef _SGI_HPC3_H #define _SGI_HPC3_H #include <linux/types.h> #include <asm/page.h> /* An HPC DMA descriptor. */ struct hpc_dma_desc { u32 pbuf; /* physical address of data buffer */ u32 cntinfo; /* counter and info bits */ #define HPCDMA_EOX 0x80000000 /* last desc in chain for tx */ #define HPCDMA_EOR 0x80000000 /* last desc in chain for rx */ #define HPCDMA_EOXP 0x40000000 /* end of packet for tx */ #define HPCDMA_EORP 0x40000000 /* end of packet for rx */ #define HPCDMA_XIE 0x20000000 /* irq generated when at end of this desc */ #define HPCDMA_XIU 0x01000000 /* Tx buffer in use by CPU. */ #define HPCDMA_EIPC 0x00ff0000 /* SEEQ ethernet special xternal bytecount */ #define HPCDMA_ETXD 0x00008000 /* set to one by HPC when packet tx'd */ #define HPCDMA_OWN 0x00004000 /* Denotes ring buffer ownership on rx */ #define HPCDMA_BCNT 0x00003fff /* size in bytes of this dma buffer */ u32 pnext; /* paddr of next hpc_dma_desc if any */ }; /* The set of regs for each HPC3 PBUS DMA channel. */ struct hpc3_pbus_dmacregs { volatile u32 pbdma_bptr; /* pbus dma channel buffer ptr */ volatile u32 pbdma_dptr; /* pbus dma channel desc ptr */ u32 _unused0[0x1000/4 - 2]; /* padding */ volatile u32 pbdma_ctrl; /* pbus dma channel control register has * copletely different meaning for read * compared with write */ /* read */ #define HPC3_PDMACTRL_INT 0x00000001 /* interrupt (cleared after read) */ #define HPC3_PDMACTRL_ISACT 0x00000002 /* channel active */ /* write */ #define HPC3_PDMACTRL_SEL 0x00000002 /* little endian transfer */ #define HPC3_PDMACTRL_RCV 0x00000004 /* direction is receive */ #define HPC3_PDMACTRL_FLSH 0x00000008 /* enable flush for receive DMA */ #define HPC3_PDMACTRL_ACT 0x00000010 /* start dma transfer */ #define HPC3_PDMACTRL_LD 0x00000020 /* load enable for ACT */ #define HPC3_PDMACTRL_RT 0x00000040 /* Use realtime GIO bus servicing */ #define HPC3_PDMACTRL_HW 0x0000ff00 /* DMA High-water mark */ #define HPC3_PDMACTRL_FB 0x003f0000 /* Ptr to beginning of fifo */ #define HPC3_PDMACTRL_FE 0x3f000000 /* Ptr to end of fifo */ u32 _unused1[0x1000/4 - 1]; /* padding */ }; /* The HPC3 SCSI registers, this does not include external ones. */ struct hpc3_scsiregs { volatile u32 cbptr; /* current dma buffer ptr, diagnostic use only */ volatile u32 ndptr; /* next dma descriptor ptr */ u32 _unused0[0x1000/4 - 2]; /* padding */ volatile u32 bcd; /* byte count info */ #define HPC3_SBCD_BCNTMSK 0x00003fff /* bytes to transfer from/to memory */ #define HPC3_SBCD_XIE 0x00004000 /* Send IRQ when done with cur buf */ #define HPC3_SBCD_EOX 0x00008000 /* Indicates this is last buf in chain */ volatile u32 ctrl; /* control register */ #define HPC3_SCTRL_IRQ 0x01 /* IRQ asserted, either dma done or parity */ #define HPC3_SCTRL_ENDIAN 0x02 /* DMA endian mode, 0=big 1=little */ #define HPC3_SCTRL_DIR 0x04 /* DMA direction, 1=dev2mem 0=mem2dev */ #define HPC3_SCTRL_FLUSH 0x08 /* Tells HPC3 to flush scsi fifos */ #define HPC3_SCTRL_ACTIVE 0x10 /* SCSI DMA channel is active */ #define HPC3_SCTRL_AMASK 0x20 /* DMA active inhibits PIO */ #define HPC3_SCTRL_CRESET 0x40 /* Resets dma channel and external controller */ #define HPC3_SCTRL_PERR 0x80 /* Bad parity on HPC3 iface to scsi controller */ volatile u32 gfptr; /* current GIO fifo ptr */ volatile u32 dfptr; /* current device fifo ptr */ volatile u32 dconfig; /* DMA configuration register */ #define HPC3_SDCFG_HCLK 0x00001 /* Enable DMA half clock mode */ #define HPC3_SDCFG_D1 0x00006 /* Cycles to spend in D1 state */ #define HPC3_SDCFG_D2 0x00038 /* Cycles to spend in D2 state */ #define HPC3_SDCFG_D3 0x001c0 /* Cycles to spend in D3 state */ #define HPC3_SDCFG_HWAT 0x00e00 /* DMA high water mark */ #define HPC3_SDCFG_HW 0x01000 /* Enable 16-bit halfword DMA accesses to scsi */ #define HPC3_SDCFG_SWAP 0x02000 /* Byte swap all DMA accesses */ #define HPC3_SDCFG_EPAR 0x04000 /* Enable parity checking for DMA */ #define HPC3_SDCFG_POLL 0x08000 /* hd_dreq polarity control */ #define HPC3_SDCFG_ERLY 0x30000 /* hd_dreq behavior control bits */ volatile u32 pconfig; /* PIO configuration register */ #define HPC3_SPCFG_P3 0x0003 /* Cycles to spend in P3 state */ #define HPC3_SPCFG_P2W 0x001c /* Cycles to spend in P2 state for writes */ #define HPC3_SPCFG_P2R 0x01e0 /* Cycles to spend in P2 state for reads */ #define HPC3_SPCFG_P1 0x0e00 /* Cycles to spend in P1 state */ #define HPC3_SPCFG_HW 0x1000 /* Enable 16-bit halfword PIO accesses to scsi */ #define HPC3_SPCFG_SWAP 0x2000 /* Byte swap all PIO accesses */ #define HPC3_SPCFG_EPAR 0x4000 /* Enable parity checking for PIO */ #define HPC3_SPCFG_FUJI 0x8000 /* Fujitsu scsi controller mode for faster dma/pio */ u32 _unused1[0x1000/4 - 6]; /* padding */ }; /* SEEQ ethernet HPC3 registers, only one seeq per HPC3. */ struct hpc3_ethregs { /* Receiver registers. */ volatile u32 rx_cbptr; /* current dma buffer ptr, diagnostic use only */ volatile u32 rx_ndptr; /* next dma descriptor ptr */ u32 _unused0[0x1000/4 - 2]; /* padding */ volatile u32 rx_bcd; /* byte count info */ #define HPC3_ERXBCD_BCNTMSK 0x00003fff /* bytes to be sent to memory */ #define HPC3_ERXBCD_XIE 0x20000000 /* HPC3 interrupts cpu at end of this buf */ #define HPC3_ERXBCD_EOX 0x80000000 /* flags this as end of descriptor chain */ volatile u32 rx_ctrl; /* control register */ #define HPC3_ERXCTRL_STAT50 0x0000003f /* Receive status reg bits of Seeq8003 */ #define HPC3_ERXCTRL_STAT6 0x00000040 /* Rdonly irq status */ #define HPC3_ERXCTRL_STAT7 0x00000080 /* Rdonlt old/new status bit from Seeq */ #define HPC3_ERXCTRL_ENDIAN 0x00000100 /* Endian for dma channel, little=1 big=0 */ #define HPC3_ERXCTRL_ACTIVE 0x00000200 /* Tells if DMA transfer is in progress */ #define HPC3_ERXCTRL_AMASK 0x00000400 /* Tells if ACTIVE inhibits PIO's to hpc3 */ #define HPC3_ERXCTRL_RBO 0x00000800 /* Receive buffer overflow if set to 1 */ volatile u32 rx_gfptr; /* current GIO fifo ptr */ volatile u32 rx_dfptr; /* current device fifo ptr */ u32 _unused1; /* padding */ volatile u32 reset; /* reset register */ #define HPC3_ERST_CRESET 0x1 /* Reset dma channel and external controller */ #define HPC3_ERST_CLRIRQ 0x2 /* Clear channel interrupt */ #define HPC3_ERST_LBACK 0x4 /* Enable diagnostic loopback mode of Seeq8003 */ volatile u32 dconfig; /* DMA configuration register */ #define HPC3_EDCFG_D1 0x0000f /* Cycles to spend in D1 state for PIO */ #define HPC3_EDCFG_D2 0x000f0 /* Cycles to spend in D2 state for PIO */ #define HPC3_EDCFG_D3 0x00f00 /* Cycles to spend in D3 state for PIO */ #define HPC3_EDCFG_WCTRL 0x01000 /* Enable writes of desc into ex ctrl port */ #define HPC3_EDCFG_FRXDC 0x02000 /* Clear eop stat bits upon rxdc, hw seeq fix */ #define HPC3_EDCFG_FEOP 0x04000 /* Bad packet marker timeout enable */ #define HPC3_EDCFG_FIRQ 0x08000 /* Another bad packet timeout enable */ #define HPC3_EDCFG_PTO 0x30000 /* Programmed timeout value for above two */ volatile u32 pconfig; /* PIO configuration register */ #define HPC3_EPCFG_P1 0x000f /* Cycles to spend in P1 state for PIO */ #define HPC3_EPCFG_P2 0x00f0 /* Cycles to spend in P2 state for PIO */ #define HPC3_EPCFG_P3 0x0f00 /* Cycles to spend in P3 state for PIO */ #define HPC3_EPCFG_TST 0x1000 /* Diagnistic ram test feature bit */ u32 _unused2[0x1000/4 - 8]; /* padding */ /* Transmitter registers. */ volatile u32 tx_cbptr; /* current dma buffer ptr, diagnostic use only */ volatile u32 tx_ndptr; /* next dma descriptor ptr */ u32 _unused3[0x1000/4 - 2]; /* padding */ volatile u32 tx_bcd; /* byte count info */ #define HPC3_ETXBCD_BCNTMSK 0x00003fff /* bytes to be read from memory */ #define HPC3_ETXBCD_ESAMP 0x10000000 /* if set, too late to add descriptor */ #define HPC3_ETXBCD_XIE 0x20000000 /* Interrupt cpu at end of cur desc */ #define HPC3_ETXBCD_EOP 0x40000000 /* Last byte of cur buf is end of packet */ #define HPC3_ETXBCD_EOX 0x80000000 /* This buf is the end of desc chain */ volatile u32 tx_ctrl; /* control register */ #define HPC3_ETXCTRL_STAT30 0x0000000f /* Rdonly copy of seeq tx stat reg */ #define HPC3_ETXCTRL_STAT4 0x00000010 /* Indicate late collision occurred */ #define HPC3_ETXCTRL_STAT75 0x000000e0 /* Rdonly irq status from seeq */ #define HPC3_ETXCTRL_ENDIAN 0x00000100 /* DMA channel endian mode, 1=little 0=big */ #define HPC3_ETXCTRL_ACTIVE 0x00000200 /* DMA tx channel is active */ #define HPC3_ETXCTRL_AMASK 0x00000400 /* Indicates ACTIVE inhibits PIO's */ volatile u32 tx_gfptr; /* current GIO fifo ptr */ volatile u32 tx_dfptr; /* current device fifo ptr */ u32 _unused4[0x1000/4 - 4]; /* padding */ }; struct hpc3_regs { /* First regs for the PBUS 8 dma channels. */ struct hpc3_pbus_dmacregs pbdma[8]; /* Now the HPC scsi registers, we get two scsi reg sets. */ struct hpc3_scsiregs scsi_chan0, scsi_chan1; /* The SEEQ hpc3 ethernet dma/control registers. */ struct hpc3_ethregs ethregs; /* Here are where the hpc3 fifo's can be directly accessed * via PIO accesses. Under normal operation we never stick * our grubby paws in here so it's just padding. */ u32 _unused0[0x18000/4]; /* HPC3 irq status regs. Due to a peculiar bug you need to * look at two different register addresses to get at all of * the status bits. The first reg can only reliably report * bits 4:0 of the status, and the second reg can only * reliably report bits 9:5 of the hpc3 irq status. I told * you it was a peculiar bug. ;-) */ volatile u32 istat0; /* Irq status, only bits <4:0> reliable. */ #define HPC3_ISTAT_PBIMASK 0x0ff /* irq bits for pbus devs 0 --> 7 */ #define HPC3_ISTAT_SC0MASK 0x100 /* irq bit for scsi channel 0 */ #define HPC3_ISTAT_SC1MASK 0x200 /* irq bit for scsi channel 1 */ volatile u32 gio_misc; /* GIO misc control bits. */ #define HPC3_GIOMISC_ERTIME 0x1 /* Enable external timer real time. */ #define HPC3_GIOMISC_DENDIAN 0x2 /* dma descriptor endian, 1=lit 0=big */ volatile u32 eeprom; /* EEPROM data reg. */ #define HPC3_EEPROM_EPROT 0x01 /* Protect register enable */ #define HPC3_EEPROM_CSEL 0x02 /* Chip select */ #define HPC3_EEPROM_ECLK 0x04 /* EEPROM clock */ #define HPC3_EEPROM_DATO 0x08 /* Data out */ #define HPC3_EEPROM_DATI 0x10 /* Data in */ volatile u32 istat1; /* Irq status, only bits <9:5> reliable. */ volatile u32 bestat; /* Bus error interrupt status reg. */ #define HPC3_BESTAT_BLMASK 0x000ff /* Bus lane where bad parity occurred */ #define HPC3_BESTAT_CTYPE 0x00100 /* Bus cycle type, 0=PIO 1=DMA */ #define HPC3_BESTAT_PIDSHIFT 9 #define HPC3_BESTAT_PIDMASK 0x3f700 /* DMA channel parity identifier */ u32 _unused1[0x14000/4 - 5]; /* padding */ /* Now direct PIO per-HPC3 peripheral access to external regs. */ volatile u32 scsi0_ext[256]; /* SCSI channel 0 external regs */ u32 _unused2[0x7c00/4]; volatile u32 scsi1_ext[256]; /* SCSI channel 1 external regs */ u32 _unused3[0x7c00/4]; volatile u32 eth_ext[320]; /* Ethernet external registers */ u32 _unused4[0x3b00/4]; /* Per-peripheral device external registers and DMA/PIO control. */ volatile u32 pbus_extregs[16][256]; volatile u32 pbus_dmacfg[8][128]; /* Cycles to spend in D3 for reads */ #define HPC3_DMACFG_D3R_MASK 0x00000001 #define HPC3_DMACFG_D3R_SHIFT 0 /* Cycles to spend in D4 for reads */ #define HPC3_DMACFG_D4R_MASK 0x0000001e #define HPC3_DMACFG_D4R_SHIFT 1 /* Cycles to spend in D5 for reads */ #define HPC3_DMACFG_D5R_MASK 0x000001e0 #define HPC3_DMACFG_D5R_SHIFT 5 /* Cycles to spend in D3 for writes */ #define HPC3_DMACFG_D3W_MASK 0x00000200 #define HPC3_DMACFG_D3W_SHIFT 9 /* Cycles to spend in D4 for writes */ #define HPC3_DMACFG_D4W_MASK 0x00003c00 #define HPC3_DMACFG_D4W_SHIFT 10 /* Cycles to spend in D5 for writes */ #define HPC3_DMACFG_D5W_MASK 0x0003c000 #define HPC3_DMACFG_D5W_SHIFT 14 /* Enable 16-bit DMA access mode */ #define HPC3_DMACFG_DS16 0x00040000 /* Places halfwords on high 16 bits of bus */ #define HPC3_DMACFG_EVENHI 0x00080000 /* Make this device real time */ #define HPC3_DMACFG_RTIME 0x00200000 /* 5 bit burst count for DMA device */ #define HPC3_DMACFG_BURST_MASK 0x07c00000 #define HPC3_DMACFG_BURST_SHIFT 22 /* Use live pbus_dreq unsynchronized signal */ #define HPC3_DMACFG_DRQLIVE 0x08000000 volatile u32 pbus_piocfg[16][64]; /* Cycles to spend in P2 state for reads */ #define HPC3_PIOCFG_P2R_MASK 0x00001 #define HPC3_PIOCFG_P2R_SHIFT 0 /* Cycles to spend in P3 state for reads */ #define HPC3_PIOCFG_P3R_MASK 0x0001e #define HPC3_PIOCFG_P3R_SHIFT 1 /* Cycles to spend in P4 state for reads */ #define HPC3_PIOCFG_P4R_MASK 0x001e0 #define HPC3_PIOCFG_P4R_SHIFT 5 /* Cycles to spend in P2 state for writes */ #define HPC3_PIOCFG_P2W_MASK 0x00200 #define HPC3_PIOCFG_P2W_SHIFT 9 /* Cycles to spend in P3 state for writes */ #define HPC3_PIOCFG_P3W_MASK 0x03c00 #define HPC3_PIOCFG_P3W_SHIFT 10 /* Cycles to spend in P4 state for writes */ #define HPC3_PIOCFG_P4W_MASK 0x3c000 #define HPC3_PIOCFG_P4W_SHIFT 14 /* Enable 16-bit PIO accesses */ #define HPC3_PIOCFG_DS16 0x40000 /* Place even address bits in bits <15:8> */ #define HPC3_PIOCFG_EVENHI 0x80000 /* PBUS PROM control regs. */ volatile u32 pbus_promwe; /* PROM write enable register */ #define HPC3_PROM_WENAB 0x1 /* Enable writes to the PROM */ u32 _unused5[0x0800/4 - 1]; volatile u32 pbus_promswap; /* Chip select swap reg */ #define HPC3_PROM_SWAP 0x1 /* invert GIO addr bit to select prom0 or prom1 */ u32 _unused6[0x0800/4 - 1]; volatile u32 pbus_gout; /* PROM general purpose output reg */ #define HPC3_PROM_STAT 0x1 /* General purpose status bit in gout */ u32 _unused7[0x1000/4 - 1]; volatile u32 rtcregs[14]; /* Dallas clock registers */ u32 _unused8[50]; volatile u32 bbram[8192-50-14]; /* Battery backed ram */ }; /* * It is possible to have two HPC3's within the address space on * one machine, though only having one is more likely on an Indy. */ extern struct hpc3_regs *hpc3c0, *hpc3c1; #define HPC3_CHIP0_BASE 0x1fb80000 /* physical */ #define HPC3_CHIP1_BASE 0x1fb00000 /* physical */ extern void sgihpc_init(void); #endif /* _SGI_HPC3_H */ |