Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sym53c416.c |
| 3 | * Low-level SCSI driver for sym53c416 chip. |
| 4 | * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com) |
| 5 | * |
| 6 | * Changes : |
| 7 | * |
| 8 | * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking |
| 9 | * Alan Cox <alan@redhat.com> : Cleaned up code formatting |
| 10 | * Fixed an irq locking bug |
| 11 | * Added ISAPnP support |
| 12 | * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates |
| 13 | * Added another card with ISAPnP support |
| 14 | * |
| 15 | * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>] |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or modify it |
| 18 | * under the terms of the GNU General Public License as published by the |
| 19 | * Free Software Foundation; either version 2, or (at your option) any |
| 20 | * later version. |
| 21 | * |
| 22 | * This program is distributed in the hope that it will be useful, but |
| 23 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 25 | * General Public License for more details. |
| 26 | * |
| 27 | */ |
| 28 | |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/string.h> |
| 34 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/interrupt.h> |
| 36 | #include <linux/delay.h> |
| 37 | #include <linux/proc_fs.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <asm/dma.h> |
| 40 | #include <asm/system.h> |
| 41 | #include <asm/io.h> |
| 42 | #include <linux/blkdev.h> |
| 43 | #include <linux/isapnp.h> |
| 44 | #include "scsi.h" |
| 45 | #include <scsi/scsi_host.h> |
| 46 | #include "sym53c416.h" |
| 47 | |
| 48 | #define VERSION_STRING "Version 1.0.0-ac" |
| 49 | |
| 50 | #define TC_LOW 0x00 /* Transfer counter low */ |
| 51 | #define TC_MID 0x01 /* Transfer counter mid */ |
| 52 | #define SCSI_FIFO 0x02 /* SCSI FIFO register */ |
| 53 | #define COMMAND_REG 0x03 /* Command Register */ |
| 54 | #define STATUS_REG 0x04 /* Status Register (READ) */ |
| 55 | #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */ |
| 56 | #define INT_REG 0x05 /* Interrupt Register (READ) */ |
| 57 | #define TOM 0x05 /* Time out multiplier (WRITE) */ |
| 58 | #define STP 0x06 /* Synchronous Transfer period */ |
| 59 | #define SYNC_OFFSET 0x07 /* Synchronous Offset */ |
| 60 | #define CONF_REG_1 0x08 /* Configuration register 1 */ |
| 61 | #define CONF_REG_2 0x0B /* Configuration register 2 */ |
| 62 | #define CONF_REG_3 0x0C /* Configuration register 3 */ |
| 63 | #define CONF_REG_4 0x0D /* Configuration register 4 */ |
| 64 | #define TC_HIGH 0x0E /* Transfer counter high */ |
| 65 | #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */ |
| 66 | #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */ |
| 67 | #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */ |
| 68 | #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */ |
| 69 | #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */ |
| 70 | #define PIO_INT_REG 0x15 /* PIO interrupt register */ |
| 71 | #define CONF_REG_5 0x16 /* Configuration register 5 */ |
| 72 | #define FEATURE_EN 0x1D /* Feature Enable register */ |
| 73 | |
| 74 | /* Configuration register 1 entries: */ |
| 75 | /* Bits 2-0: SCSI ID of host adapter */ |
| 76 | #define SCM 0x80 /* Slow Cable Mode */ |
| 77 | #define SRID 0x40 /* SCSI Reset Interrupt Disable */ |
| 78 | #define PTM 0x20 /* Parity Test Mode */ |
| 79 | #define EPC 0x10 /* Enable Parity Checking */ |
| 80 | #define CTME 0x08 /* Special Test Mode */ |
| 81 | |
| 82 | /* Configuration register 2 entries: */ |
| 83 | #define FE 0x40 /* Features Enable */ |
| 84 | #define SCSI2 0x08 /* SCSI 2 Enable */ |
| 85 | #define TBPA 0x04 /* Target Bad Parity Abort */ |
| 86 | |
| 87 | /* Configuration register 3 entries: */ |
| 88 | #define IDMRC 0x80 /* ID Message Reserved Check */ |
| 89 | #define QTE 0x40 /* Queue Tag Enable */ |
| 90 | #define CDB10 0x20 /* Command Descriptor Block 10 */ |
| 91 | #define FSCSI 0x10 /* FastSCSI */ |
| 92 | #define FCLK 0x08 /* FastClock */ |
| 93 | |
| 94 | /* Configuration register 4 entries: */ |
| 95 | #define RBS 0x08 /* Register bank select */ |
| 96 | #define EAN 0x04 /* Enable Active Negotiation */ |
| 97 | |
| 98 | /* Configuration register 5 entries: */ |
| 99 | #define LPSR 0x80 /* Lower Power SCSI Reset */ |
| 100 | #define IE 0x20 /* Interrupt Enable */ |
| 101 | #define LPM 0x02 /* Low Power Mode */ |
| 102 | #define WSE0 0x01 /* 0WS Enable */ |
| 103 | |
| 104 | /* Interrupt register entries: */ |
| 105 | #define SRST 0x80 /* SCSI Reset */ |
| 106 | #define ILCMD 0x40 /* Illegal Command */ |
| 107 | #define DIS 0x20 /* Disconnect */ |
| 108 | #define BS 0x10 /* Bus Service */ |
| 109 | #define FC 0x08 /* Function Complete */ |
| 110 | #define RESEL 0x04 /* Reselected */ |
| 111 | #define SI 0x03 /* Selection Interrupt */ |
| 112 | |
| 113 | /* Status Register Entries: */ |
| 114 | #define SCI 0x80 /* SCSI Core Int */ |
| 115 | #define GE 0x40 /* Gross Error */ |
| 116 | #define PE 0x20 /* Parity Error */ |
| 117 | #define TC 0x10 /* Terminal Count */ |
| 118 | #define VGC 0x08 /* Valid Group Code */ |
| 119 | #define PHBITS 0x07 /* Phase bits */ |
| 120 | |
| 121 | /* PIO Interrupt Register Entries: */ |
| 122 | #define SCI 0x80 /* SCSI Core Int */ |
| 123 | #define PFI 0x40 /* PIO FIFO Interrupt */ |
| 124 | #define FULL 0x20 /* PIO FIFO Full */ |
| 125 | #define EMPTY 0x10 /* PIO FIFO Empty */ |
| 126 | #define CE 0x08 /* Collision Error */ |
| 127 | #define OUE 0x04 /* Overflow / Underflow error */ |
| 128 | #define FIE 0x02 /* Full Interrupt Enable */ |
| 129 | #define EIE 0x01 /* Empty Interrupt Enable */ |
| 130 | |
| 131 | /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */ |
| 132 | #define PHASE_DATA_OUT 0x00 |
| 133 | #define PHASE_DATA_IN 0x01 |
| 134 | #define PHASE_COMMAND 0x02 |
| 135 | #define PHASE_STATUS 0x03 |
| 136 | #define PHASE_RESERVED_1 0x04 |
| 137 | #define PHASE_RESERVED_2 0x05 |
| 138 | #define PHASE_MESSAGE_OUT 0x06 |
| 139 | #define PHASE_MESSAGE_IN 0x07 |
| 140 | |
| 141 | /* SYM53C416 core commands */ |
| 142 | #define NOOP 0x00 |
| 143 | #define FLUSH_FIFO 0x01 |
| 144 | #define RESET_CHIP 0x02 |
| 145 | #define RESET_SCSI_BUS 0x03 |
| 146 | #define DISABLE_SEL_RESEL 0x45 |
| 147 | #define RESEL_SEQ 0x40 |
| 148 | #define SEL_WITHOUT_ATN_SEQ 0x41 |
| 149 | #define SEL_WITH_ATN_SEQ 0x42 |
| 150 | #define SEL_WITH_ATN_AND_STOP_SEQ 0x43 |
| 151 | #define ENABLE_SEL_RESEL 0x44 |
| 152 | #define SEL_WITH_ATN3_SEQ 0x46 |
| 153 | #define RESEL3_SEQ 0x47 |
| 154 | #define SND_MSG 0x20 |
| 155 | #define SND_STAT 0x21 |
| 156 | #define SND_DATA 0x22 |
| 157 | #define DISCONNECT_SEQ 0x23 |
| 158 | #define TERMINATE_SEQ 0x24 |
| 159 | #define TARGET_COMM_COMPLETE_SEQ 0x25 |
| 160 | #define DISCONN 0x27 |
| 161 | #define RECV_MSG_SEQ 0x28 |
| 162 | #define RECV_CMD 0x29 |
| 163 | #define RECV_DATA 0x2A |
| 164 | #define RECV_CMD_SEQ 0x2B |
| 165 | #define TARGET_ABORT_PIO 0x04 |
| 166 | #define TRANSFER_INFORMATION 0x10 |
| 167 | #define INIT_COMM_COMPLETE_SEQ 0x11 |
| 168 | #define MSG_ACCEPTED 0x12 |
| 169 | #define TRANSFER_PAD 0x18 |
| 170 | #define SET_ATN 0x1A |
| 171 | #define RESET_ATN 0x1B |
| 172 | #define ILLEGAL 0xFF |
| 173 | |
| 174 | #define PIO_MODE 0x80 |
| 175 | |
| 176 | #define IO_RANGE 0x20 /* 0x00 - 0x1F */ |
| 177 | #define ID "sym53c416" /* Attention: copied to the sym53c416.h */ |
| 178 | #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */ |
| 179 | |
| 180 | #define READ_TIMEOUT 150 |
| 181 | #define WRITE_TIMEOUT 150 |
| 182 | |
| 183 | #ifdef MODULE |
| 184 | |
| 185 | #define sym53c416_base sym53c416 |
| 186 | #define sym53c416_base_1 sym53c416_1 |
| 187 | #define sym53c416_base_2 sym53c416_2 |
| 188 | #define sym53c416_base_3 sym53c416_3 |
| 189 | |
| 190 | static unsigned int sym53c416_base[2] = {0,0}; |
| 191 | static unsigned int sym53c416_base_1[2] = {0,0}; |
| 192 | static unsigned int sym53c416_base_2[2] = {0,0}; |
| 193 | static unsigned int sym53c416_base_3[2] = {0,0}; |
| 194 | |
| 195 | #endif |
| 196 | |
| 197 | #define MAXHOSTS 4 |
| 198 | |
| 199 | #define SG_ADDRESS(buffer) ((char *) (page_address((buffer)->page)+(buffer)->offset)) |
| 200 | |
| 201 | enum phases |
| 202 | { |
| 203 | idle, |
| 204 | data_out, |
| 205 | data_in, |
| 206 | command_ph, |
| 207 | status_ph, |
| 208 | message_out, |
| 209 | message_in |
| 210 | }; |
| 211 | |
| 212 | typedef struct |
| 213 | { |
| 214 | int base; |
| 215 | int irq; |
| 216 | int scsi_id; |
| 217 | } host; |
| 218 | |
| 219 | static host hosts[MAXHOSTS] = { |
| 220 | {0, 0, SYM53C416_SCSI_ID}, |
| 221 | {0, 0, SYM53C416_SCSI_ID}, |
| 222 | {0, 0, SYM53C416_SCSI_ID}, |
| 223 | {0, 0, SYM53C416_SCSI_ID} |
| 224 | }; |
| 225 | |
| 226 | static int host_index = 0; |
| 227 | static char info[120]; |
| 228 | static Scsi_Cmnd *current_command = NULL; |
| 229 | static int fastpio = 1; |
| 230 | |
| 231 | static int probeaddrs[] = {0x200, 0x220, 0x240, 0}; |
| 232 | |
| 233 | static void sym53c416_set_transfer_counter(int base, unsigned int len) |
| 234 | { |
| 235 | /* Program Transfer Counter */ |
| 236 | outb(len & 0x0000FF, base + TC_LOW); |
| 237 | outb((len & 0x00FF00) >> 8, base + TC_MID); |
| 238 | outb((len & 0xFF0000) >> 16, base + TC_HIGH); |
| 239 | } |
| 240 | |
| 241 | static DEFINE_SPINLOCK(sym53c416_lock); |
| 242 | |
| 243 | /* Returns the number of bytes read */ |
| 244 | static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len) |
| 245 | { |
| 246 | unsigned int orig_len = len; |
| 247 | unsigned long flags = 0; |
| 248 | unsigned int bytes_left; |
| 249 | unsigned long i; |
| 250 | int timeout = READ_TIMEOUT; |
| 251 | |
| 252 | /* Do transfer */ |
| 253 | spin_lock_irqsave(&sym53c416_lock, flags); |
| 254 | while(len && timeout) |
| 255 | { |
| 256 | bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */ |
| 257 | if(fastpio && bytes_left > 3) |
| 258 | { |
| 259 | insl(base + PIO_FIFO_1, buffer, bytes_left >> 2); |
| 260 | buffer += bytes_left & 0xFC; |
| 261 | len -= bytes_left & 0xFC; |
| 262 | } |
| 263 | else if(bytes_left > 0) |
| 264 | { |
| 265 | len -= bytes_left; |
| 266 | for(; bytes_left > 0; bytes_left--) |
| 267 | *(buffer++) = inb(base + PIO_FIFO_1); |
| 268 | } |
| 269 | else |
| 270 | { |
| 271 | i = jiffies + timeout; |
| 272 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 273 | while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout) |
| 274 | if(inb(base + PIO_INT_REG) & SCI) |
| 275 | timeout = 0; |
| 276 | spin_lock_irqsave(&sym53c416_lock, flags); |
| 277 | if(inb(base + PIO_INT_REG) & EMPTY) |
| 278 | timeout = 0; |
| 279 | } |
| 280 | } |
| 281 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 282 | return orig_len - len; |
| 283 | } |
| 284 | |
| 285 | /* Returns the number of bytes written */ |
| 286 | static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len) |
| 287 | { |
| 288 | unsigned int orig_len = len; |
| 289 | unsigned long flags = 0; |
| 290 | unsigned int bufferfree; |
| 291 | unsigned long i; |
| 292 | unsigned int timeout = WRITE_TIMEOUT; |
| 293 | |
| 294 | /* Do transfer */ |
| 295 | spin_lock_irqsave(&sym53c416_lock, flags); |
| 296 | while(len && timeout) |
| 297 | { |
| 298 | bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT); |
| 299 | if(bufferfree > len) |
| 300 | bufferfree = len; |
| 301 | if(fastpio && bufferfree > 3) |
| 302 | { |
| 303 | outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2); |
| 304 | buffer += bufferfree & 0xFC; |
| 305 | len -= bufferfree & 0xFC; |
| 306 | } |
| 307 | else if(bufferfree > 0) |
| 308 | { |
| 309 | len -= bufferfree; |
| 310 | for(; bufferfree > 0; bufferfree--) |
| 311 | outb(*(buffer++), base + PIO_FIFO_1); |
| 312 | } |
| 313 | else |
| 314 | { |
| 315 | i = jiffies + timeout; |
| 316 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 317 | while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout) |
| 318 | ; |
| 319 | spin_lock_irqsave(&sym53c416_lock, flags); |
| 320 | if(inb(base + PIO_INT_REG) & FULL) |
| 321 | timeout = 0; |
| 322 | } |
| 323 | } |
| 324 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 325 | return orig_len - len; |
| 326 | } |
| 327 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 328 | static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | { |
| 330 | struct Scsi_Host *dev = dev_id; |
| 331 | int base = 0; |
| 332 | int i; |
| 333 | unsigned long flags = 0; |
| 334 | unsigned char status_reg, pio_int_reg, int_reg; |
FUJITA Tomonori | 772a5c3 | 2007-05-16 06:44:34 +0900 | [diff] [blame] | 335 | struct scatterlist *sg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | unsigned int tot_trans = 0; |
| 337 | |
| 338 | /* We search the base address of the host adapter which caused the interrupt */ |
| 339 | /* FIXME: should pass dev_id sensibly as hosts[i] */ |
| 340 | for(i = 0; i < host_index && !base; i++) |
| 341 | if(irq == hosts[i].irq) |
| 342 | base = hosts[i].base; |
| 343 | /* If no adapter found, we cannot handle the interrupt. Leave a message */ |
| 344 | /* and continue. This should never happen... */ |
| 345 | if(!base) |
| 346 | { |
| 347 | printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq); |
| 348 | return IRQ_NONE; |
| 349 | } |
| 350 | /* Now we have the base address and we can start handling the interrupt */ |
| 351 | |
| 352 | spin_lock_irqsave(dev->host_lock,flags); |
| 353 | status_reg = inb(base + STATUS_REG); |
| 354 | pio_int_reg = inb(base + PIO_INT_REG); |
| 355 | int_reg = inb(base + INT_REG); |
| 356 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 357 | |
| 358 | /* First, we handle error conditions */ |
| 359 | if(int_reg & SCI) /* SCSI Reset */ |
| 360 | { |
| 361 | printk(KERN_DEBUG "sym53c416: Reset received\n"); |
| 362 | current_command->SCp.phase = idle; |
| 363 | current_command->result = DID_RESET << 16; |
| 364 | spin_lock_irqsave(dev->host_lock, flags); |
| 365 | current_command->scsi_done(current_command); |
| 366 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 367 | goto out; |
| 368 | } |
| 369 | if(int_reg & ILCMD) /* Illegal Command */ |
| 370 | { |
| 371 | printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG)); |
| 372 | current_command->SCp.phase = idle; |
| 373 | current_command->result = DID_ERROR << 16; |
| 374 | spin_lock_irqsave(dev->host_lock, flags); |
| 375 | current_command->scsi_done(current_command); |
| 376 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 377 | goto out; |
| 378 | } |
| 379 | if(status_reg & GE) /* Gross Error */ |
| 380 | { |
| 381 | printk(KERN_WARNING "sym53c416: Controller reports gross error.\n"); |
| 382 | current_command->SCp.phase = idle; |
| 383 | current_command->result = DID_ERROR << 16; |
| 384 | spin_lock_irqsave(dev->host_lock, flags); |
| 385 | current_command->scsi_done(current_command); |
| 386 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 387 | goto out; |
| 388 | } |
| 389 | if(status_reg & PE) /* Parity Error */ |
| 390 | { |
| 391 | printk(KERN_WARNING "sym53c416:SCSI parity error.\n"); |
| 392 | current_command->SCp.phase = idle; |
| 393 | current_command->result = DID_PARITY << 16; |
| 394 | spin_lock_irqsave(dev->host_lock, flags); |
| 395 | current_command->scsi_done(current_command); |
| 396 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 397 | goto out; |
| 398 | } |
| 399 | if(pio_int_reg & (CE | OUE)) |
| 400 | { |
| 401 | printk(KERN_WARNING "sym53c416: PIO interrupt error.\n"); |
| 402 | current_command->SCp.phase = idle; |
| 403 | current_command->result = DID_ERROR << 16; |
| 404 | spin_lock_irqsave(dev->host_lock, flags); |
| 405 | current_command->scsi_done(current_command); |
| 406 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 407 | goto out; |
| 408 | } |
| 409 | if(int_reg & DIS) /* Disconnect */ |
| 410 | { |
| 411 | if(current_command->SCp.phase != message_in) |
| 412 | current_command->result = DID_NO_CONNECT << 16; |
| 413 | else |
| 414 | current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16); |
| 415 | current_command->SCp.phase = idle; |
| 416 | spin_lock_irqsave(dev->host_lock, flags); |
| 417 | current_command->scsi_done(current_command); |
| 418 | spin_unlock_irqrestore(dev->host_lock, flags); |
| 419 | goto out; |
| 420 | } |
| 421 | /* Now we handle SCSI phases */ |
| 422 | |
| 423 | switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */ |
| 424 | { |
| 425 | case PHASE_DATA_OUT: |
| 426 | { |
| 427 | if(int_reg & BS) |
| 428 | { |
| 429 | current_command->SCp.phase = data_out; |
| 430 | outb(FLUSH_FIFO, base + COMMAND_REG); |
FUJITA Tomonori | 772a5c3 | 2007-05-16 06:44:34 +0900 | [diff] [blame] | 431 | sym53c416_set_transfer_counter(base, |
| 432 | scsi_bufflen(current_command)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); |
FUJITA Tomonori | 772a5c3 | 2007-05-16 06:44:34 +0900 | [diff] [blame] | 434 | |
| 435 | scsi_for_each_sg(current_command, |
| 436 | sg, scsi_sg_count(current_command), i) { |
| 437 | tot_trans += sym53c416_write(base, |
| 438 | SG_ADDRESS(sg), |
| 439 | sg->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | } |
| 441 | if(tot_trans < current_command->underflow) |
| 442 | printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); |
| 443 | } |
| 444 | break; |
| 445 | } |
| 446 | |
| 447 | case PHASE_DATA_IN: |
| 448 | { |
| 449 | if(int_reg & BS) |
| 450 | { |
| 451 | current_command->SCp.phase = data_in; |
| 452 | outb(FLUSH_FIFO, base + COMMAND_REG); |
FUJITA Tomonori | 772a5c3 | 2007-05-16 06:44:34 +0900 | [diff] [blame] | 453 | sym53c416_set_transfer_counter(base, |
| 454 | scsi_bufflen(current_command)); |
| 455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); |
FUJITA Tomonori | 772a5c3 | 2007-05-16 06:44:34 +0900 | [diff] [blame] | 457 | |
| 458 | scsi_for_each_sg(current_command, |
| 459 | sg, scsi_sg_count(current_command), i) { |
| 460 | tot_trans += sym53c416_read(base, |
| 461 | SG_ADDRESS(sg), |
| 462 | sg->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
| 464 | if(tot_trans < current_command->underflow) |
| 465 | printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); |
| 466 | } |
| 467 | break; |
| 468 | } |
| 469 | |
| 470 | case PHASE_COMMAND: |
| 471 | { |
| 472 | current_command->SCp.phase = command_ph; |
| 473 | printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n"); |
| 474 | break; |
| 475 | } |
| 476 | |
| 477 | case PHASE_STATUS: |
| 478 | { |
| 479 | current_command->SCp.phase = status_ph; |
| 480 | outb(FLUSH_FIFO, base + COMMAND_REG); |
| 481 | outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG); |
| 482 | break; |
| 483 | } |
| 484 | |
| 485 | case PHASE_RESERVED_1: |
| 486 | case PHASE_RESERVED_2: |
| 487 | { |
| 488 | printk(KERN_ERR "sym53c416: Reserved phase occurred.\n"); |
| 489 | break; |
| 490 | } |
| 491 | |
| 492 | case PHASE_MESSAGE_OUT: |
| 493 | { |
| 494 | current_command->SCp.phase = message_out; |
| 495 | outb(SET_ATN, base + COMMAND_REG); |
| 496 | outb(MSG_ACCEPTED, base + COMMAND_REG); |
| 497 | break; |
| 498 | } |
| 499 | |
| 500 | case PHASE_MESSAGE_IN: |
| 501 | { |
| 502 | current_command->SCp.phase = message_in; |
| 503 | current_command->SCp.Status = inb(base + SCSI_FIFO); |
| 504 | current_command->SCp.Message = inb(base + SCSI_FIFO); |
| 505 | if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT) |
| 506 | outb(SET_ATN, base + COMMAND_REG); |
| 507 | outb(MSG_ACCEPTED, base + COMMAND_REG); |
| 508 | break; |
| 509 | } |
| 510 | } |
| 511 | out: |
| 512 | return IRQ_HANDLED; |
| 513 | } |
| 514 | |
| 515 | static void sym53c416_init(int base, int scsi_id) |
| 516 | { |
| 517 | outb(RESET_CHIP, base + COMMAND_REG); |
| 518 | outb(NOOP, base + COMMAND_REG); |
| 519 | outb(0x99, base + TOM); /* Time out of 250 ms */ |
| 520 | outb(0x05, base + STP); |
| 521 | outb(0x00, base + SYNC_OFFSET); |
| 522 | outb(EPC | scsi_id, base + CONF_REG_1); |
| 523 | outb(FE | SCSI2 | TBPA, base + CONF_REG_2); |
| 524 | outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3); |
| 525 | outb(0x83 | EAN, base + CONF_REG_4); |
| 526 | outb(IE | WSE0, base + CONF_REG_5); |
| 527 | outb(0, base + FEATURE_EN); |
| 528 | } |
| 529 | |
| 530 | static int sym53c416_probeirq(int base, int scsi_id) |
| 531 | { |
| 532 | int irq, irqs; |
| 533 | unsigned long i; |
| 534 | |
| 535 | /* Clear interrupt register */ |
| 536 | inb(base + INT_REG); |
| 537 | /* Start probing for irq's */ |
| 538 | irqs = probe_irq_on(); |
| 539 | /* Reinit chip */ |
| 540 | sym53c416_init(base, scsi_id); |
| 541 | /* Cause interrupt */ |
| 542 | outb(NOOP, base + COMMAND_REG); |
| 543 | outb(ILLEGAL, base + COMMAND_REG); |
| 544 | outb(0x07, base + DEST_BUS_ID); |
| 545 | outb(0x00, base + DEST_BUS_ID); |
| 546 | /* Wait for interrupt to occur */ |
| 547 | i = jiffies + 20; |
| 548 | while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI)) |
| 549 | barrier(); |
| 550 | if(time_before_eq(i, jiffies)) /* timed out */ |
| 551 | return 0; |
| 552 | /* Get occurred irq */ |
| 553 | irq = probe_irq_off(irqs); |
| 554 | sym53c416_init(base, scsi_id); |
| 555 | return irq; |
| 556 | } |
| 557 | |
| 558 | /* Setup: sym53c416=base,irq */ |
| 559 | void sym53c416_setup(char *str, int *ints) |
| 560 | { |
| 561 | int i; |
| 562 | |
| 563 | if(host_index >= MAXHOSTS) |
| 564 | { |
| 565 | printk(KERN_WARNING "sym53c416: Too many hosts defined\n"); |
| 566 | return; |
| 567 | } |
| 568 | if(ints[0] < 1 || ints[0] > 2) |
| 569 | { |
| 570 | printk(KERN_ERR "sym53c416: Wrong number of parameters:\n"); |
| 571 | printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n"); |
| 572 | return; |
| 573 | } |
| 574 | for(i = 0; i < host_index && i >= 0; i++) |
| 575 | if(hosts[i].base == ints[1]) |
| 576 | i = -2; |
| 577 | if(i >= 0) |
| 578 | { |
| 579 | hosts[host_index].base = ints[1]; |
| 580 | hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0; |
| 581 | host_index++; |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | static int sym53c416_test(int base) |
| 586 | { |
| 587 | outb(RESET_CHIP, base + COMMAND_REG); |
| 588 | outb(NOOP, base + COMMAND_REG); |
| 589 | if(inb(base + COMMAND_REG) != NOOP) |
| 590 | return 0; |
| 591 | if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF) |
| 592 | return 0; |
| 593 | if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY) |
| 594 | return 0; |
| 595 | return 1; |
| 596 | } |
| 597 | |
| 598 | |
| 599 | static struct isapnp_device_id id_table[] __devinitdata = { |
| 600 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| 601 | ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 }, |
| 602 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| 603 | ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, |
| 604 | { ISAPNP_DEVICE_SINGLE_END } |
| 605 | }; |
| 606 | |
| 607 | MODULE_DEVICE_TABLE(isapnp, id_table); |
| 608 | |
| 609 | static void sym53c416_probe(void) |
| 610 | { |
| 611 | int *base = probeaddrs; |
| 612 | int ints[2]; |
| 613 | |
| 614 | ints[0] = 1; |
| 615 | for(; *base; base++) { |
| 616 | if (request_region(*base, IO_RANGE, ID)) { |
| 617 | if (sym53c416_test(*base)) { |
| 618 | ints[1] = *base; |
| 619 | sym53c416_setup(NULL, ints); |
| 620 | } |
| 621 | release_region(*base, IO_RANGE); |
| 622 | } |
| 623 | } |
| 624 | } |
| 625 | |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 626 | int __init sym53c416_detect(struct scsi_host_template *tpnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | { |
| 628 | unsigned long flags; |
| 629 | struct Scsi_Host * shpnt = NULL; |
| 630 | int i; |
| 631 | int count; |
| 632 | struct pnp_dev *idev = NULL; |
| 633 | |
| 634 | #ifdef MODULE |
| 635 | int ints[3]; |
| 636 | |
| 637 | ints[0] = 2; |
| 638 | if(sym53c416_base) |
| 639 | { |
| 640 | ints[1] = sym53c416_base[0]; |
| 641 | ints[2] = sym53c416_base[1]; |
| 642 | sym53c416_setup(NULL, ints); |
| 643 | } |
| 644 | if(sym53c416_base_1) |
| 645 | { |
| 646 | ints[1] = sym53c416_base_1[0]; |
| 647 | ints[2] = sym53c416_base_1[1]; |
| 648 | sym53c416_setup(NULL, ints); |
| 649 | } |
| 650 | if(sym53c416_base_2) |
| 651 | { |
| 652 | ints[1] = sym53c416_base_2[0]; |
| 653 | ints[2] = sym53c416_base_2[1]; |
| 654 | sym53c416_setup(NULL, ints); |
| 655 | } |
| 656 | if(sym53c416_base_3) |
| 657 | { |
| 658 | ints[1] = sym53c416_base_3[0]; |
| 659 | ints[2] = sym53c416_base_3[1]; |
| 660 | sym53c416_setup(NULL, ints); |
| 661 | } |
| 662 | #endif |
| 663 | printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING); |
| 664 | |
| 665 | for (i=0; id_table[i].vendor != 0; i++) { |
| 666 | while((idev=pnp_find_dev(NULL, id_table[i].vendor, |
| 667 | id_table[i].function, idev))!=NULL) |
| 668 | { |
| 669 | int i[3]; |
| 670 | |
| 671 | if(pnp_device_attach(idev)<0) |
| 672 | { |
| 673 | printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n"); |
| 674 | continue; |
| 675 | } |
| 676 | if(pnp_activate_dev(idev) < 0) |
| 677 | { |
| 678 | printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n"); |
| 679 | pnp_device_detach(idev); |
| 680 | continue; |
| 681 | |
| 682 | } |
| 683 | |
| 684 | i[0] = 2; |
| 685 | i[1] = pnp_port_start(idev, 0); |
| 686 | i[2] = pnp_irq(idev, 0); |
| 687 | |
| 688 | printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n", |
| 689 | i[1], i[2]); |
| 690 | sym53c416_setup(NULL, i); |
| 691 | } |
| 692 | } |
| 693 | sym53c416_probe(); |
| 694 | |
| 695 | /* Now we register and set up each host adapter found... */ |
| 696 | for(count = 0, i = 0; i < host_index; i++) { |
| 697 | if (!request_region(hosts[i].base, IO_RANGE, ID)) |
| 698 | continue; |
| 699 | if (!sym53c416_test(hosts[i].base)) { |
| 700 | printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); |
| 701 | goto fail_release_region; |
| 702 | } |
| 703 | |
| 704 | /* We don't have an irq yet, so we should probe for one */ |
| 705 | if (!hosts[i].irq) |
| 706 | hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id); |
| 707 | if (!hosts[i].irq) |
| 708 | goto fail_release_region; |
| 709 | |
| 710 | shpnt = scsi_register(tpnt, 0); |
| 711 | if (!shpnt) |
| 712 | goto fail_release_region; |
| 713 | /* Request for specified IRQ */ |
| 714 | if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt)) |
| 715 | goto fail_free_host; |
| 716 | |
| 717 | spin_lock_irqsave(&sym53c416_lock, flags); |
| 718 | shpnt->unique_id = hosts[i].base; |
| 719 | shpnt->io_port = hosts[i].base; |
| 720 | shpnt->n_io_port = IO_RANGE; |
| 721 | shpnt->irq = hosts[i].irq; |
| 722 | shpnt->this_id = hosts[i].scsi_id; |
| 723 | sym53c416_init(hosts[i].base, hosts[i].scsi_id); |
| 724 | count++; |
| 725 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 726 | continue; |
| 727 | |
| 728 | fail_free_host: |
| 729 | scsi_unregister(shpnt); |
| 730 | fail_release_region: |
| 731 | release_region(hosts[i].base, IO_RANGE); |
| 732 | } |
| 733 | return count; |
| 734 | } |
| 735 | |
| 736 | const char *sym53c416_info(struct Scsi_Host *SChost) |
| 737 | { |
| 738 | int i; |
| 739 | int base = SChost->io_port; |
| 740 | int irq = SChost->irq; |
| 741 | int scsi_id = 0; |
| 742 | int rev = inb(base + TC_HIGH); |
| 743 | |
| 744 | for(i = 0; i < host_index; i++) |
| 745 | if(hosts[i].base == base) |
| 746 | scsi_id = hosts[i].scsi_id; |
| 747 | sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow"); |
| 748 | return info; |
| 749 | } |
| 750 | |
| 751 | int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) |
| 752 | { |
| 753 | int base; |
| 754 | unsigned long flags = 0; |
| 755 | int i; |
| 756 | |
| 757 | /* Store base register as we can have more than one controller in the system */ |
| 758 | base = SCpnt->device->host->io_port; |
| 759 | current_command = SCpnt; /* set current command */ |
| 760 | current_command->scsi_done = done; /* set ptr to done function */ |
| 761 | current_command->SCp.phase = command_ph; /* currect phase is the command phase */ |
| 762 | current_command->SCp.Status = 0; |
| 763 | current_command->SCp.Message = 0; |
| 764 | |
| 765 | spin_lock_irqsave(&sym53c416_lock, flags); |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 766 | outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */ |
| 768 | /* Write SCSI command into the SCSI fifo */ |
| 769 | for(i = 0; i < SCpnt->cmd_len; i++) |
| 770 | outb(SCpnt->cmnd[i], base + SCSI_FIFO); |
| 771 | /* Start selection sequence */ |
| 772 | outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG); |
| 773 | /* Now an interrupt will be generated which we will catch in out interrupt routine */ |
| 774 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
| 775 | return 0; |
| 776 | } |
| 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | static int sym53c416_host_reset(Scsi_Cmnd *SCpnt) |
| 779 | { |
| 780 | int base; |
| 781 | int scsi_id = -1; |
| 782 | int i; |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 783 | unsigned long flags; |
| 784 | |
| 785 | spin_lock_irqsave(&sym53c416_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
| 787 | /* printk("sym53c416_reset\n"); */ |
| 788 | base = SCpnt->device->host->io_port; |
| 789 | /* search scsi_id - fixme, we shouldnt need to iterate for this! */ |
Adrian Bunk | b6f0b0d | 2005-05-05 16:16:22 -0700 | [diff] [blame] | 790 | for(i = 0; i < host_index && scsi_id == -1; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | if(hosts[i].base == base) |
| 792 | scsi_id = hosts[i].scsi_id; |
| 793 | outb(RESET_CHIP, base + COMMAND_REG); |
| 794 | outb(NOOP | PIO_MODE, base + COMMAND_REG); |
| 795 | outb(RESET_SCSI_BUS, base + COMMAND_REG); |
| 796 | sym53c416_init(base, scsi_id); |
Jeff Garzik | df0ae24 | 2005-05-28 07:57:14 -0400 | [diff] [blame] | 797 | |
| 798 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | return SUCCESS; |
| 800 | } |
| 801 | |
| 802 | static int sym53c416_release(struct Scsi_Host *shost) |
| 803 | { |
| 804 | if (shost->irq) |
| 805 | free_irq(shost->irq, shost); |
| 806 | if (shost->io_port && shost->n_io_port) |
| 807 | release_region(shost->io_port, shost->n_io_port); |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int sym53c416_bios_param(struct scsi_device *sdev, |
| 812 | struct block_device *dev, |
| 813 | sector_t capacity, int *ip) |
| 814 | { |
| 815 | int size; |
| 816 | |
| 817 | size = capacity; |
| 818 | ip[0] = 64; /* heads */ |
| 819 | ip[1] = 32; /* sectors */ |
| 820 | if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */ |
| 821 | { |
| 822 | ip[0] = 255; /* heads */ |
| 823 | ip[1] = 63; /* sectors */ |
| 824 | ip[2] = size / (255 * 63); /* cylinders */ |
| 825 | } |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | /* Loadable module support */ |
| 830 | #ifdef MODULE |
| 831 | |
| 832 | MODULE_AUTHOR("Lieven Willems"); |
| 833 | MODULE_LICENSE("GPL"); |
| 834 | |
| 835 | module_param_array(sym53c416, uint, NULL, 0); |
| 836 | module_param_array(sym53c416_1, uint, NULL, 0); |
| 837 | module_param_array(sym53c416_2, uint, NULL, 0); |
| 838 | module_param_array(sym53c416_3, uint, NULL, 0); |
| 839 | |
| 840 | #endif |
| 841 | |
Christoph Hellwig | d0be4a7d | 2005-10-31 18:31:40 +0100 | [diff] [blame] | 842 | static struct scsi_host_template driver_template = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | .proc_name = "sym53c416", |
| 844 | .name = "Symbios Logic 53c416", |
| 845 | .detect = sym53c416_detect, |
| 846 | .info = sym53c416_info, |
| 847 | .queuecommand = sym53c416_queuecommand, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | .eh_host_reset_handler =sym53c416_host_reset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | .release = sym53c416_release, |
| 850 | .bios_param = sym53c416_bios_param, |
| 851 | .can_queue = 1, |
| 852 | .this_id = SYM53C416_SCSI_ID, |
| 853 | .sg_tablesize = 32, |
| 854 | .cmd_per_lun = 1, |
| 855 | .unchecked_isa_dma = 1, |
| 856 | .use_clustering = ENABLE_CLUSTERING, |
FUJITA Tomonori | 9cb83c7 | 2007-10-16 11:24:32 +0200 | [diff] [blame] | 857 | .use_sg_chaining = ENABLE_SG_CHAINING, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | }; |
| 859 | #include "scsi_module.c" |