drivers/scsi/pcmcia/sym53c500_cs.c

   1 /*
   2 *  sym53c500_cs.c       Bob Tracy (rct@frus.com)
   3 *
   4 *  A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
   5 *  New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic
   6 *  53c500 controller: intended for use with 2.6 and later kernels.
   7 *  The pcmcia-cs add-on version of this driver is not supported
   8 *  beyond 2.4.  It consisted of three files with history/copyright
   9 *  information as follows:
  10 *
  11 *  SYM53C500.h
  12 *       Bob Tracy (rct@frus.com)
  13 *       Original by Tom Corner (tcorner@via.at).
  14 *       Adapted from NCR53c406a.h which is Copyrighted (C) 1994
  15 *       Normunds Saumanis (normunds@rx.tech.swh.lv)
  16 *
  17 *  SYM53C500.c
  18 *       Bob Tracy (rct@frus.com)
  19 *       Original driver by Tom Corner (tcorner@via.at) was adapted
  20 *       from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996
  21 *       Normunds Saumanis (normunds@fi.ibm.com)
  22 *
  23 *  sym53c500.c
  24 *       Bob Tracy (rct@frus.com)
  25 *       Original by Tom Corner (tcorner@via.at) was adapted from a
  26 *       driver for the Qlogic SCSI card written by
  27 *       David Hinds (dhinds@allegro.stanford.edu).
  28 *
  29 *  This program is free software; you can redistribute it and/or modify it
  30 *  under the terms of the GNU General Public License as published by the
  31 *  Free Software Foundation; either version 2, or (at your option) any
  32 *  later version.
  33 *
  34 *  This program is distributed in the hope that it will be useful, but
  35 *  WITHOUT ANY WARRANTY; without even the implied warranty of
  36 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  37 *  General Public License for more details.
  38 */
  39
  40 #define SYM53C500_DEBUG 0
  41 #define VERBOSE_SYM53C500_DEBUG 0
  42
  43 /*
  44 *  Set this to 0 if you encounter kernel lockups while transferring
  45 *  data in PIO mode.  Note this can be changed via "sysfs".
  46 */
  47 #define USE_FAST_PIO 1
  48
  49 /* =============== End of user configurable parameters ============== */
  50
  51 #include <linux/module.h>
  52 #include <linux/moduleparam.h>
  53 #include <linux/errno.h>
  54 #include <linux/init.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/kernel.h>
  57 #include <linux/sched.h>
  58 #include <linux/slab.h>
  59 #include <linux/string.h>
  60 #include <linux/ioport.h>
  61 #include <linux/blkdev.h>
  62 #include <linux/spinlock.h>
  63 #include <linux/bitops.h>
  64
  65 #include <asm/io.h>
  66 #include <asm/dma.h>
  67 #include <asm/irq.h>
  68
  69 #include <scsi/scsi_ioctl.h>
  70 #include <scsi/scsi_cmnd.h>
  71 #include <scsi/scsi_device.h>
  72 #include <scsi/scsi.h>
  73 #include <scsi/scsi_host.h>
  74
  75 #include <pcmcia/cs_types.h>
  76 #include <pcmcia/cs.h>
  77 #include <pcmcia/cistpl.h>
  78 #include <pcmcia/ds.h>
  79 #include <pcmcia/ciscode.h>
  80
  81 /* ================================================================== */
  82
  83 #ifdef PCMCIA_DEBUG
  84 static int pc_debug = PCMCIA_DEBUG;
  85 module_param(pc_debug, int, 0);
  86 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
  87 static char *version =
  88 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)";
  89 #else
  90 #define DEBUG(n, args...)
  91 #endif
  92
  93 /* ================================================================== */
  94
  95 /* Parameters that can be set with 'insmod' */
  96
  97 /* Bit map of interrupts to choose from */
  98 static unsigned int irq_mask = 0xdeb8;  /* 3-5, 7, 9-12, 14, 15 */
  99 static int irq_list[4] = { -1 };
 100
 101 module_param(irq_mask, int, 0);
 102 MODULE_PARM_DESC(irq_mask, "IRQ mask bits (default: 0xdeb8)");
 103 module_param_array(irq_list, int, NULL, 0);
 104 MODULE_PARM_DESC(irq_list, "Comma-separated list of up to 4 IRQs to try (default: auto select).");
 105
 106 /* ================================================================== */
 107
 108 #define SYNC_MODE 0             /* Synchronous transfer mode */
 109
 110 /* Default configuration */
 111 #define C1_IMG   0x07           /* ID=7 */
 112 #define C2_IMG   0x48           /* FE SCSI2 */
 113 #define C3_IMG   0x20           /* CDB */
 114 #define C4_IMG   0x04           /* ANE */
 115 #define C5_IMG   0xa4           /* ? changed from b6= AA PI SIE POL */
 116 #define C7_IMG   0x80           /* added for SYM53C500 t. corner */
 117
 118 /* Hardware Registers: offsets from io_port (base) */
 119
 120 /* Control Register Set 0 */
 121 #define TC_LSB          0x00            /* transfer counter lsb */
 122 #define TC_MSB          0x01            /* transfer counter msb */
 123 #define SCSI_FIFO       0x02            /* scsi fifo register */
 124 #define CMD_REG         0x03            /* command register */
 125 #define STAT_REG        0x04            /* status register */
 126 #define DEST_ID         0x04            /* selection/reselection bus id */
 127 #define INT_REG         0x05            /* interrupt status register */
 128 #define SRTIMOUT        0x05            /* select/reselect timeout reg */
 129 #define SEQ_REG         0x06            /* sequence step register */
 130 #define SYNCPRD         0x06            /* synchronous transfer period */
 131 #define FIFO_FLAGS      0x07            /* indicates # of bytes in fifo */
 132 #define SYNCOFF         0x07            /* synchronous offset register */
 133 #define CONFIG1         0x08            /* configuration register */
 134 #define CLKCONV         0x09            /* clock conversion register */
 135 /* #define TESTREG      0x0A */         /* test mode register */
 136 #define CONFIG2         0x0B            /* configuration 2 register */
 137 #define CONFIG3         0x0C            /* configuration 3 register */
 138 #define CONFIG4         0x0D            /* configuration 4 register */
 139 #define TC_HIGH         0x0E            /* transfer counter high */
 140 /* #define FIFO_BOTTOM  0x0F */         /* reserve FIFO byte register */
 141
 142 /* Control Register Set 1 */
 143 /* #define JUMPER_SENSE 0x00 */         /* jumper sense port reg (r/w) */
 144 /* #define SRAM_PTR     0x01 */         /* SRAM address pointer reg (r/w) */
 145 /* #define SRAM_DATA    0x02 */         /* SRAM data register (r/w) */
 146 #define PIO_FIFO        0x04            /* PIO FIFO registers (r/w) */
 147 /* #define PIO_FIFO1    0x05 */         /*  */
 148 /* #define PIO_FIFO2    0x06 */         /*  */
 149 /* #define PIO_FIFO3    0x07 */         /*  */
 150 #define PIO_STATUS      0x08            /* PIO status (r/w) */
 151 /* #define ATA_CMD      0x09 */         /* ATA command/status reg (r/w) */
 152 /* #define ATA_ERR      0x0A */         /* ATA features/error reg (r/w) */
 153 #define PIO_FLAG        0x0B            /* PIO flag interrupt enable (r/w) */
 154 #define CONFIG5         0x09            /* configuration 5 register */
 155 /* #define SIGNATURE    0x0E */         /* signature register (r) */
 156 /* #define CONFIG6      0x0F */         /* configuration 6 register (r) */
 157 #define CONFIG7         0x0d
 158
 159 /* select register set 0 */
 160 #define REG0(x)         (outb(C4_IMG, (x) + CONFIG4))
 161 /* select register set 1 */
 162 #define REG1(x)         outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5)
 163
 164 #if SYM53C500_DEBUG
 165 #define DEB(x) x
 166 #else
 167 #define DEB(x)
 168 #endif
 169
 170 #if VERBOSE_SYM53C500_DEBUG
 171 #define VDEB(x) x
 172 #else
 173 #define VDEB(x)
 174 #endif
 175
 176 #define LOAD_DMA_COUNT(x, count) \
 177   outb(count & 0xff, (x) + TC_LSB); \
 178   outb((count >> 8) & 0xff, (x) + TC_MSB); \
 179   outb((count >> 16) & 0xff, (x) + TC_HIGH);
 180
 181 /* Chip commands */
 182 #define DMA_OP               0x80
 183
 184 #define SCSI_NOP             0x00
 185 #define FLUSH_FIFO           0x01
 186 #define CHIP_RESET           0x02
 187 #define SCSI_RESET           0x03
 188 #define RESELECT             0x40
 189 #define SELECT_NO_ATN        0x41
 190 #define SELECT_ATN           0x42
 191 #define SELECT_ATN_STOP      0x43
 192 #define ENABLE_SEL           0x44
 193 #define DISABLE_SEL          0x45
 194 #define SELECT_ATN3          0x46
 195 #define RESELECT3            0x47
 196 #define TRANSFER_INFO        0x10
 197 #define INIT_CMD_COMPLETE    0x11
 198 #define MSG_ACCEPT           0x12
 199 #define TRANSFER_PAD         0x18
 200 #define SET_ATN              0x1a
 201 #define RESET_ATN            0x1b
 202 #define SEND_MSG             0x20
 203 #define SEND_STATUS          0x21
 204 #define SEND_DATA            0x22
 205 #define DISCONN_SEQ          0x23
 206 #define TERMINATE_SEQ        0x24
 207 #define TARG_CMD_COMPLETE    0x25
 208 #define DISCONN              0x27
 209 #define RECV_MSG             0x28
 210 #define RECV_CMD             0x29
 211 #define RECV_DATA            0x2a
 212 #define RECV_CMD_SEQ         0x2b
 213 #define TARGET_ABORT_DMA     0x04
 214
 215 /* ================================================================== */
 216
 217 struct scsi_info_t {
 218         dev_link_t link;
 219         dev_node_t node;
 220         struct Scsi_Host *host;
 221         unsigned short manf_id;
 222 };
 223
 224 /*
 225 *  Repository for per-instance host data.
 226 */
 227 struct sym53c500_data {
 228         struct scsi_cmnd *current_SC;
 229         int fast_pio;
 230 };
 231
 232 enum Phase {
 233     idle,
 234     data_out,
 235     data_in,
 236     command_ph,
 237     status_ph,
 238     message_out,
 239     message_in
 240 };
 241
 242 /* ================================================================== */
 243
 244 /*
 245 *  Global (within this module) variables other than
 246 *  sym53c500_driver_template (the scsi_host_template).
 247 */
 248 static dev_link_t *dev_list;
 249 static dev_info_t dev_info = "sym53c500_cs";
 250
 251 /* ================================================================== */
 252
 253 static void
 254 chip_init(int io_port)
 255 {
 256         REG1(io_port);
 257         outb(0x01, io_port + PIO_STATUS);
 258         outb(0x00, io_port + PIO_FLAG);
 259
 260         outb(C4_IMG, io_port + CONFIG4);        /* REG0(io_port); */
 261         outb(C3_IMG, io_port + CONFIG3);
 262         outb(C2_IMG, io_port + CONFIG2);
 263         outb(C1_IMG, io_port + CONFIG1);
 264
 265         outb(0x05, io_port + CLKCONV);  /* clock conversion factor */
 266         outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */
 267         outb(0x05, io_port + SYNCPRD);  /* Synchronous transfer period */
 268         outb(SYNC_MODE, io_port + SYNCOFF);     /* synchronous mode */
 269 }
 270
 271 static void
 272 SYM53C500_int_host_reset(int io_port)
 273 {
 274         outb(C4_IMG, io_port + CONFIG4);        /* REG0(io_port); */
 275         outb(CHIP_RESET, io_port + CMD_REG);
 276         outb(SCSI_NOP, io_port + CMD_REG);      /* required after reset */
 277         outb(SCSI_RESET, io_port + CMD_REG);
 278         chip_init(io_port);
 279 }
 280
 281 static __inline__ int
 282 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
 283 {
 284         int i;
 285         int len;        /* current scsi fifo size */
 286
 287         REG1(base);
 288         while (reqlen) {
 289                 i = inb(base + PIO_STATUS);
 290                 /* VDEB(printk("pio_status=%x\n", i)); */
 291                 if (i & 0x80)
 292                         return 0;
 293
 294                 switch (i & 0x1e) {
 295                 default:
 296                 case 0x10:      /* fifo empty */
 297                         len = 0;
 298                         break;
 299                 case 0x0:
 300                         len = 1;
 301                         break;
 302                 case 0x8:       /* fifo 1/3 full */
 303                         len = 42;
 304                         break;
 305                 case 0xc:       /* fifo 2/3 full */
 306                         len = 84;
 307                         break;
 308                 case 0xe:       /* fifo full */
 309                         len = 128;
 310                         break;
 311                 }
 312
 313                 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
 314                         return 0;
 315                 }
 316
 317                 if (len) {
 318                         if (len > reqlen)
 319                                 len = reqlen;
 320
 321                         if (fast_pio && len > 3) {
 322                                 insl(base + PIO_FIFO, request, len >> 2);
 323                                 request += len & 0xfc;
 324                                 reqlen -= len & 0xfc;
 325                         } else {
 326                                 while (len--) {
 327                                         *request++ = inb(base + PIO_FIFO);
 328                                         reqlen--;
 329                                 }
 330                         }
 331                 }
 332         }
 333         return 0;
 334 }
 335
 336 static __inline__ int
 337 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen)
 338 {
 339         int i = 0;
 340         int len;        /* current scsi fifo size */
 341
 342         REG1(base);
 343         while (reqlen && !(i & 0x40)) {
 344                 i = inb(base + PIO_STATUS);
 345                 /* VDEB(printk("pio_status=%x\n", i)); */
 346                 if (i & 0x80)   /* error */
 347                         return 0;
 348
 349                 switch (i & 0x1e) {
 350                 case 0x10:
 351                         len = 128;
 352                         break;
 353                 case 0x0:
 354                         len = 84;
 355                         break;
 356                 case 0x8:
 357                         len = 42;
 358                         break;
 359                 case 0xc:
 360                         len = 1;
 361                         break;
 362                 default:
 363                 case 0xe:
 364                         len = 0;
 365                         break;
 366                 }
 367
 368                 if (len) {
 369                         if (len > reqlen)
 370                                 len = reqlen;
 371
 372                         if (fast_pio && len > 3) {
 373                                 outsl(base + PIO_FIFO, request, len >> 2);
 374                                 request += len & 0xfc;
 375                                 reqlen -= len & 0xfc;
 376                         } else {
 377                                 while (len--) {
 378                                         outb(*request++, base + PIO_FIFO);
 379                                         reqlen--;
 380                                 }
 381                         }
 382                 }
 383         }
 384         return 0;
 385 }
 386
 387 static irqreturn_t
 388 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs)
 389 {
 390         unsigned long flags;
 391         struct Scsi_Host *dev = dev_id;
 392         DEB(unsigned char fifo_size;)
 393         DEB(unsigned char seq_reg;)
 394         unsigned char status, int_reg;
 395         unsigned char pio_status;
 396         struct scatterlist *sglist;
 397         unsigned int sgcount;
 398         int port_base = dev->io_port;
 399         struct sym53c500_data *data =
 400             (struct sym53c500_data *)dev->hostdata;
 401         struct scsi_cmnd *curSC = data->current_SC;
 402         int fast_pio = data->fast_pio;
 403
 404         spin_lock_irqsave(dev->host_lock, flags);
 405
 406         VDEB(printk("SYM53C500_intr called\n"));
 407
 408         REG1(port_base);
 409         pio_status = inb(port_base + PIO_STATUS);
 410         REG0(port_base);
 411         status = inb(port_base + STAT_REG);
 412         DEB(seq_reg = inb(port_base + SEQ_REG));
 413         int_reg = inb(port_base + INT_REG);
 414         DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f);
 415
 416 #if SYM53C500_DEBUG
 417         printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
 418             status, seq_reg, int_reg, fifo_size);
 419         printk(", pio=%02x\n", pio_status);
 420 #endif /* SYM53C500_DEBUG */
 421
 422         if (int_reg & 0x80) {   /* SCSI reset intr */
 423                 DEB(printk("SYM53C500: reset intr received\n"));
 424                 curSC->result = DID_RESET << 16;
 425                 goto idle_out;
 426         }
 427
 428         if (pio_status & 0x80) {
 429                 printk("SYM53C500: Warning: PIO error!\n");
 430                 curSC->result = DID_ERROR << 16;
 431                 goto idle_out;
 432         }
 433
 434         if (status & 0x20) {            /* Parity error */
 435                 printk("SYM53C500: Warning: parity error!\n");
 436                 curSC->result = DID_PARITY << 16;
 437                 goto idle_out;
 438         }
 439
 440         if (status & 0x40) {            /* Gross error */
 441                 printk("SYM53C500: Warning: gross error!\n");
 442                 curSC->result = DID_ERROR << 16;
 443                 goto idle_out;
 444         }
 445
 446         if (int_reg & 0x20) {           /* Disconnect */
 447                 DEB(printk("SYM53C500: disconnect intr received\n"));
 448                 if (curSC->SCp.phase != message_in) {   /* Unexpected disconnect */
 449                         curSC->result = DID_NO_CONNECT << 16;
 450                 } else {        /* Command complete, return status and message */
 451                         curSC->result = (curSC->SCp.Status & 0xff)
 452                             | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
 453                 }
 454                 goto idle_out;
 455         }
 456
 457         switch (status & 0x07) {        /* scsi phase */
 458         case 0x00:                      /* DATA-OUT */
 459                 if (int_reg & 0x10) {   /* Target requesting info transfer */
 460                         curSC->SCp.phase = data_out;
 461                         VDEB(printk("SYM53C500: Data-Out phase\n"));
 462                         outb(FLUSH_FIFO, port_base + CMD_REG);
 463                         LOAD_DMA_COUNT(port_base, curSC->request_bufflen);      /* Max transfer size */
 464                         outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
 465                         if (!curSC->use_sg)     /* Don't use scatter-gather */
 466                                 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
 467                         else {  /* use scatter-gather */
 468                                 sgcount = curSC->use_sg;
 469                                 sglist = curSC->request_buffer;
 470                                 while (sgcount--) {
 471                                         SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
 472                                         sglist++;
 473                                 }
 474                         }
 475                         REG0(port_base);
 476                 }
 477                 break;
 478
 479         case 0x01:              /* DATA-IN */
 480                 if (int_reg & 0x10) {   /* Target requesting info transfer */
 481                         curSC->SCp.phase = data_in;
 482                         VDEB(printk("SYM53C500: Data-In phase\n"));
 483                         outb(FLUSH_FIFO, port_base + CMD_REG);
 484                         LOAD_DMA_COUNT(port_base, curSC->request_bufflen);      /* Max transfer size */
 485                         outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
 486                         if (!curSC->use_sg)     /* Don't use scatter-gather */
 487                                 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
 488                         else {  /* Use scatter-gather */
 489                                 sgcount = curSC->use_sg;
 490                                 sglist = curSC->request_buffer;
 491                                 while (sgcount--) {
 492                                         SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
 493                                         sglist++;
 494                                 }
 495                         }
 496                         REG0(port_base);
 497                 }
 498                 break;
 499
 500         case 0x02:              /* COMMAND */
 501                 curSC->SCp.phase = command_ph;
 502                 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n");
 503                 break;
 504
 505         case 0x03:              /* STATUS */
 506                 curSC->SCp.phase = status_ph;
 507                 VDEB(printk("SYM53C500: Status phase\n"));
 508                 outb(FLUSH_FIFO, port_base + CMD_REG);
 509                 outb(INIT_CMD_COMPLETE, port_base + CMD_REG);
 510                 break;
 511
 512         case 0x04:              /* Reserved */
 513         case 0x05:              /* Reserved */
 514                 printk("SYM53C500: WARNING: Reserved phase!!!\n");
 515                 break;
 516
 517         case 0x06:              /* MESSAGE-OUT */
 518                 DEB(printk("SYM53C500: Message-Out phase\n"));
 519                 curSC->SCp.phase = message_out;
 520                 outb(SET_ATN, port_base + CMD_REG);     /* Reject the message */
 521                 outb(MSG_ACCEPT, port_base + CMD_REG);
 522                 break;
 523
 524         case 0x07:              /* MESSAGE-IN */
 525                 VDEB(printk("SYM53C500: Message-In phase\n"));
 526                 curSC->SCp.phase = message_in;
 527
 528                 curSC->SCp.Status = inb(port_base + SCSI_FIFO);
 529                 curSC->SCp.Message = inb(port_base + SCSI_FIFO);
 530
 531                 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f));
 532                 DEB(printk("Status = %02x  Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message));
 533
 534                 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) {
 535                         outb(SET_ATN, port_base + CMD_REG);     /* Reject message */
 536                         DEB(printk("Discarding SAVE_POINTERS message\n"));
 537                 }
 538                 outb(MSG_ACCEPT, port_base + CMD_REG);
 539                 break;
 540         }
 541 out:
 542         spin_unlock_irqrestore(dev->host_lock, flags);
 543         return IRQ_HANDLED;
 544
 545 idle_out:
 546         curSC->SCp.phase = idle;
 547         curSC->scsi_done(curSC);
 548         goto out;
 549 }
 550
 551 static void
 552 SYM53C500_release(dev_link_t *link)
 553 {
 554         struct scsi_info_t *info = link->priv;
 555         struct Scsi_Host *shost = info->host;
 556
 557         DEBUG(0, "SYM53C500_release(0x%p)\n", link);
 558
 559         /*
 560         *  Do this before releasing/freeing resources.
 561         */
 562         scsi_remove_host(shost);
 563
 564         /*
 565         *  Interrupts getting hosed on card removal.  Try
 566         *  the following code, mostly from qlogicfas.c.
 567         */
 568         if (shost->irq)
 569                 free_irq(shost->irq, shost);
 570         if (shost->dma_channel != 0xff)
 571                 free_dma(shost->dma_channel);
 572         if (shost->io_port && shost->n_io_port)
 573                 release_region(shost->io_port, shost->n_io_port);
 574
 575         link->dev = NULL;
 576
 577         pcmcia_release_configuration(link->handle);
 578         pcmcia_release_io(link->handle, &link->io);
 579         pcmcia_release_irq(link->handle, &link->irq);
 580
 581         link->state &= ~DEV_CONFIG;
 582
 583         scsi_host_put(shost);
 584 } /* SYM53C500_release */
 585
 586 static const char*
 587 SYM53C500_info(struct Scsi_Host *SChost)
 588 {
 589         static char info_msg[256];
 590         struct sym53c500_data *data =
 591             (struct sym53c500_data *)SChost->hostdata;
 592
 593         DEB(printk("SYM53C500_info called\n"));
 594         (void)snprintf(info_msg, sizeof(info_msg),
 595             "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",
 596             SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");
 597         return (info_msg);
 598 }
 599
 600 static int
 601 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 602 {
 603         int i;
 604         int port_base = SCpnt->device->host->io_port;
 605         struct sym53c500_data *data =
 606             (struct sym53c500_data *)SCpnt->device->host->hostdata;
 607
 608         VDEB(printk("SYM53C500_queue called\n"));
 609
 610         DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
 611             SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
 612             SCpnt->device->lun,  SCpnt->request_bufflen));
 613
 614         VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
 615             printk("cmd[%d]=%02x  ", i, SCpnt->cmnd[i]));
 616         VDEB(printk("\n"));
 617
 618         data->current_SC = SCpnt;
 619         data->current_SC->scsi_done = done;
 620         data->current_SC->SCp.phase = command_ph;
 621         data->current_SC->SCp.Status = 0;
 622         data->current_SC->SCp.Message = 0;
 623
 624         /* We are locked here already by the mid layer */
 625         REG0(port_base);
 626         outb(SCpnt->device->id, port_base + DEST_ID);   /* set destination */
 627         outb(FLUSH_FIFO, port_base + CMD_REG);  /* reset the fifos */
 628
 629         for (i = 0; i < SCpnt->cmd_len; i++) {
 630                 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);
 631         }
 632         outb(SELECT_NO_ATN, port_base + CMD_REG);
 633
 634         return 0;
 635 }
 636
 637 static int
 638 SYM53C500_host_reset(struct scsi_cmnd *SCpnt)
 639 {
 640         int port_base = SCpnt->device->host->io_port;
 641
 642         DEB(printk("SYM53C500_host_reset called\n"));
 643         SYM53C500_int_host_reset(port_base);
 644
 645         return SUCCESS;
 646 }
 647
 648 static int
 649 SYM53C500_biosparm(struct scsi_device *disk,
 650     struct block_device *dev,
 651     sector_t capacity, int *info_array)
 652 {
 653         int size;
 654
 655         DEB(printk("SYM53C500_biosparm called\n"));
 656
 657         size = capacity;
 658         info_array[0] = 64;             /* heads */
 659         info_array[1] = 32;             /* sectors */
 660         info_array[2] = size >> 11;     /* cylinders */
 661         if (info_array[2] > 1024) {     /* big disk */
 662                 info_array[0] = 255;
 663                 info_array[1] = 63;
 664                 info_array[2] = size / (255 * 63);
 665         }
 666         return 0;
 667 }
 668
 669 static ssize_t
 670 SYM53C500_show_pio(struct class_device *cdev, char *buf)
 671 {
 672         struct Scsi_Host *SHp = class_to_shost(cdev);
 673         struct sym53c500_data *data =
 674             (struct sym53c500_data *)SHp->hostdata;
 675
 676         return snprintf(buf, 4, "%d\n", data->fast_pio);
 677 }
 678
 679 static ssize_t
 680 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count)
 681 {
 682         int pio;
 683         struct Scsi_Host *SHp = class_to_shost(cdev);
 684         struct sym53c500_data *data =
 685             (struct sym53c500_data *)SHp->hostdata;
 686
 687         pio = simple_strtoul(buf, NULL, 0);
 688         if (pio == 0 || pio == 1) {
 689                 data->fast_pio = pio;
 690                 return count;
 691         }
 692         else
 693                 return -EINVAL;
 694 }
 695
 696 /*
 697 *  SCSI HBA device attributes we want to
 698 *  make available via sysfs.
 699 */
 700 static struct class_device_attribute SYM53C500_pio_attr = {
 701         .attr = {
 702                 .name = "fast_pio",
 703                 .mode = (S_IRUGO | S_IWUSR),
 704         },
 705         .show = SYM53C500_show_pio,
 706         .store = SYM53C500_store_pio,
 707 };
 708
 709 static struct class_device_attribute *SYM53C500_shost_attrs[] = {
 710         &SYM53C500_pio_attr,
 711         NULL,
 712 };
 713
 714 /*
 715 *  scsi_host_template initializer
 716 */
 717 static struct scsi_host_template sym53c500_driver_template = {
 718      .module                    = THIS_MODULE,
 719      .name                      = "SYM53C500",
 720      .info                      = SYM53C500_info,
 721      .queuecommand              = SYM53C500_queue,
 722      .eh_host_reset_handler     = SYM53C500_host_reset,
 723      .bios_param                = SYM53C500_biosparm,
 724      .proc_name                 = "SYM53C500",
 725      .can_queue                 = 1,
 726      .this_id                   = 7,
 727      .sg_tablesize              = 32,
 728      .cmd_per_lun               = 1,
 729      .use_clustering            = ENABLE_CLUSTERING,
 730      .shost_attrs               = SYM53C500_shost_attrs
 731 };
 732
 733 #define CS_CHECK(fn, ret) \
 734 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 735
 736 static void
 737 SYM53C500_config(dev_link_t *link)
 738 {
 739         client_handle_t handle = link->handle;
 740         struct scsi_info_t *info = link->priv;
 741         tuple_t tuple;
 742         cisparse_t parse;
 743         int i, last_ret, last_fn;
 744         int irq_level, port_base;
 745         unsigned short tuple_data[32];
 746         struct Scsi_Host *host;
 747         struct scsi_host_template *tpnt = &sym53c500_driver_template;
 748         struct sym53c500_data *data;
 749
 750         DEBUG(0, "SYM53C500_config(0x%p)\n", link);
 751
 752         tuple.TupleData = (cisdata_t *)tuple_data;
 753         tuple.TupleDataMax = 64;
 754         tuple.TupleOffset = 0;
 755         tuple.DesiredTuple = CISTPL_CONFIG;
 756         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 757         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 758         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 759         link->conf.ConfigBase = parse.config.base;
 760
 761         tuple.DesiredTuple = CISTPL_MANFID;
 762         if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
 763             (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS))
 764                 info->manf_id = le16_to_cpu(tuple.TupleData[0]);
 765
 766         /* Configure card */
 767         link->state |= DEV_CONFIG;
 768
 769         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 770         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 771         while (1) {
 772                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 773                     pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 774                         goto next_entry;
 775                 link->conf.ConfigIndex = parse.cftable_entry.index;
 776                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
 777                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
 778
 779                 if (link->io.BasePort1 != 0) {
 780                         i = pcmcia_request_io(handle, &link->io);
 781                         if (i == CS_SUCCESS)
 782                                 break;
 783                 }
 784 next_entry:
 785                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
 786         }
 787
 788         CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq));
 789         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
 790
 791         /*
 792         *  That's the trouble with copying liberally from another driver.
 793         *  Some things probably aren't relevant, and I suspect this entire
 794         *  section dealing with manufacturer IDs can be scrapped.       --rct
 795         */
 796         if ((info->manf_id == MANFID_MACNICA) ||
 797             (info->manf_id == MANFID_PIONEER) ||
 798             (info->manf_id == 0x0098)) {
 799                 /* set ATAcmd */
 800                 outb(0xb4, link->io.BasePort1 + 0xd);
 801                 outb(0x24, link->io.BasePort1 + 0x9);
 802                 outb(0x04, link->io.BasePort1 + 0xd);
 803         }
 804
 805         /*
 806         *  irq_level == 0 implies tpnt->can_queue == 0, which
 807         *  is not supported in 2.6.  Thus, only irq_level > 0
 808         *  will be allowed.
 809         *
 810         *  Possible port_base values are as follows:
 811         *
 812         *       0x130, 0x230, 0x280, 0x290,
 813         *       0x320, 0x330, 0x340, 0x350
 814         */
 815         port_base = link->io.BasePort1;
 816         irq_level = link->irq.AssignedIRQ;
 817
 818         DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n",
 819             port_base, irq_level, USE_FAST_PIO);)
 820
 821         chip_init(port_base);
 822
 823         host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data));
 824         if (!host) {
 825                 printk("SYM53C500: Unable to register host, giving up.\n");
 826                 goto err_release;
 827         }
 828
 829         data = (struct sym53c500_data *)host->hostdata;
 830
 831         if (irq_level > 0) {
 832                 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) {
 833                         printk("SYM53C500: unable to allocate IRQ %d\n", irq_level);
 834                         goto err_free_scsi;
 835                 }
 836                 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level));
 837         } else if (irq_level == 0) {
 838                 DEB(printk("SYM53C500: No interrupts detected\n"));
 839                 goto err_free_scsi;
 840         } else {
 841                 DEB(printk("SYM53C500: Shouldn't get here!\n"));
 842                 goto err_free_scsi;
 843         }
 844
 845         host->unique_id = port_base;
 846         host->irq = irq_level;
 847         host->io_port = port_base;
 848         host->n_io_port = 0x10;
 849         host->dma_channel = -1;
 850
 851         /*
 852         *  Note fast_pio is set to USE_FAST_PIO by
 853         *  default, but can be changed via "sysfs".
 854         */
 855         data->fast_pio = USE_FAST_PIO;
 856
 857         sprintf(info->node.dev_name, "scsi%d", host->host_no);
 858         link->dev = &info->node;
 859         info->host = host;
 860
 861         if (scsi_add_host(host, NULL))
 862                 goto err_free_irq;
 863
 864         scsi_scan_host(host);
 865
 866         goto out;       /* SUCCESS */
 867
 868 err_free_irq:
 869         free_irq(irq_level, host);
 870 err_free_scsi:
 871         scsi_host_put(host);
 872 err_release:
 873         release_region(port_base, 0x10);
 874         printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n");
 875
 876 out:
 877         link->state &= ~DEV_CONFIG_PENDING;
 878         return;
 879
 880 cs_failed:
 881         cs_error(link->handle, last_fn, last_ret);
 882         SYM53C500_release(link);
 883         return;
 884 } /* SYM53C500_config */
 885
 886 static int
 887 SYM53C500_event(event_t event, int priority, event_callback_args_t *args)
 888 {
 889         dev_link_t *link = args->client_data;
 890         struct scsi_info_t *info = link->priv;
 891
 892         DEBUG(1, "SYM53C500_event(0x%06x)\n", event);
 893
 894         switch (event) {
 895         case CS_EVENT_CARD_REMOVAL:
 896                 link->state &= ~DEV_PRESENT;
 897                 if (link->state & DEV_CONFIG)
 898                         SYM53C500_release(link);
 899                 break;
 900         case CS_EVENT_CARD_INSERTION:
 901                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 902                 SYM53C500_config(link);
 903                 break;
 904         case CS_EVENT_PM_SUSPEND:
 905                 link->state |= DEV_SUSPEND;
 906                 /* Fall through... */
 907         case CS_EVENT_RESET_PHYSICAL:
 908                 if (link->state & DEV_CONFIG)
 909                         pcmcia_release_configuration(link->handle);
 910                 break;
 911         case CS_EVENT_PM_RESUME:
 912                 link->state &= ~DEV_SUSPEND;
 913                 /* Fall through... */
 914         case CS_EVENT_CARD_RESET:
 915                 if (link->state & DEV_CONFIG) {
 916                         pcmcia_request_configuration(link->handle, &link->conf);
 917                         /* See earlier comment about manufacturer IDs. */
 918                         if ((info->manf_id == MANFID_MACNICA) ||
 919                             (info->manf_id == MANFID_PIONEER) ||
 920                             (info->manf_id == 0x0098)) {
 921                                 outb(0x80, link->io.BasePort1 + 0xd);
 922                                 outb(0x24, link->io.BasePort1 + 0x9);
 923                                 outb(0x04, link->io.BasePort1 + 0xd);
 924                         }
 925                         /*
 926                         *  If things don't work after a "resume",
 927                         *  this is a good place to start looking.
 928                         */
 929                         SYM53C500_int_host_reset(link->io.BasePort1);
 930                 }
 931                 break;
 932         }
 933         return 0;
 934 } /* SYM53C500_event */
 935
 936 static void
 937 SYM53C500_detach(dev_link_t *link)
 938 {
 939         dev_link_t **linkp;
 940
 941         DEBUG(0, "SYM53C500_detach(0x%p)\n", link);
 942
 943         /* Locate device structure */
 944         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 945                 if (*linkp == link)
 946                         break;
 947         if (*linkp == NULL)
 948                 return;
 949
 950         if (link->state & DEV_CONFIG)
 951                 SYM53C500_release(link);
 952
 953         if (link->handle)
 954                 pcmcia_deregister_client(link->handle);
 955
 956         /* Unlink device structure, free bits. */
 957         *linkp = link->next;
 958         kfree(link->priv);
 959         link->priv = NULL;
 960 } /* SYM53C500_detach */
 961
 962 static dev_link_t *
 963 SYM53C500_attach(void)
 964 {
 965         struct scsi_info_t *info;
 966         client_reg_t client_reg;
 967         dev_link_t *link;
 968         int i, ret;
 969
 970         DEBUG(0, "SYM53C500_attach()\n");
 971
 972         /* Create new SCSI device */
 973         info = kmalloc(sizeof(*info), GFP_KERNEL);
 974         if (!info)
 975                 return NULL;
 976         memset(info, 0, sizeof(*info));
 977         link = &info->link;
 978         link->priv = info;
 979         link->io.NumPorts1 = 16;
 980         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 981         link->io.IOAddrLines = 10;
 982         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
 983         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 984         if (irq_list[0] == -1)
 985                 link->irq.IRQInfo2 = irq_mask;
 986         else
 987                 for (i = 0; i < 4; i++)
 988                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 989         link->conf.Attributes = CONF_ENABLE_IRQ;
 990         link->conf.Vcc = 50;
 991         link->conf.IntType = INT_MEMORY_AND_IO;
 992         link->conf.Present = PRESENT_OPTION;
 993
 994         /* Register with Card Services */
 995         link->next = dev_list;
 996         dev_list = link;
 997         client_reg.dev_info = &dev_info;
 998         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 999         client_reg.event_handler = &SYM53C500_event;
1000         client_reg.EventMask = CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET |
1001             CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
1002             CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
1003         client_reg.Version = 0x0210;
1004         client_reg.event_callback_args.client_data = link;
1005         ret = pcmcia_register_client(&link->handle, &client_reg);
1006         if (ret != 0) {
1007                 cs_error(link->handle, RegisterClient, ret);
1008                 SYM53C500_detach(link);
1009                 return NULL;
1010         }
1011
1012         return link;
1013 } /* SYM53C500_attach */
1014
1015 MODULE_AUTHOR("Bob Tracy <rct@frus.com>");
1016 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver");
1017 MODULE_LICENSE("GPL");
1018
1019 static struct pcmcia_driver sym53c500_cs_driver = {
1020         .owner          = THIS_MODULE,
1021         .drv            = {
1022                 .name   = "sym53c500_cs",
1023         },
1024         .attach         = SYM53C500_attach,
1025         .detach         = SYM53C500_detach,
1026 };
1027
1028 static int __init
1029 init_sym53c500_cs(void)
1030 {
1031         return pcmcia_register_driver(&sym53c500_cs_driver);
1032 }
1033
1034 static void __exit
1035 exit_sym53c500_cs(void)
1036 {
1037         pcmcia_unregister_driver(&sym53c500_cs_driver);
1038 }
1039
1040 module_init(init_sym53c500_cs);
1041 module_exit(exit_sym53c500_cs);