drivers/scsi/arm/cumana_1.c

   1 /*
   2  * Generic Generic NCR5380 driver
   3  *
   4  * Copyright 1995-2002, Russell King
   5  */
   6 #include <linux/module.h>
   7 #include <linux/signal.h>
   8 #include <linux/sched.h>
   9 #include <linux/ioport.h>
  10 #include <linux/delay.h>
  11 #include <linux/blkdev.h>
  12 #include <linux/init.h>
  13
  14 #include <asm/ecard.h>
  15 #include <asm/io.h>
  16 #include <asm/system.h>
  17
  18 #include "../scsi.h"
  19 #include <scsi/scsi_host.h>
  20
  21 #include <scsi/scsicam.h>
  22
  23 #define AUTOSENSE
  24 #define PSEUDO_DMA
  25
  26 #define CUMANASCSI_PUBLIC_RELEASE 1
  27
  28 #define NCR5380_implementation_fields   int port, ctrl
  29 #define NCR5380_local_declare()         struct Scsi_Host *_instance
  30 #define NCR5380_setup(instance)         _instance = instance
  31 #define NCR5380_read(reg)               cumanascsi_read(_instance, reg)
  32 #define NCR5380_write(reg, value)       cumanascsi_write(_instance, reg, value)
  33 #define NCR5380_intr                    cumanascsi_intr
  34 #define NCR5380_queue_command           cumanascsi_queue_command
  35 #define NCR5380_proc_info               cumanascsi_proc_info
  36
  37 #define BOARD_NORMAL    0
  38 #define BOARD_NCR53C400 1
  39
  40 #include "../NCR5380.h"
  41
  42 void cumanascsi_setup(char *str, int *ints)
  43 {
  44 }
  45
  46 const char *cumanascsi_info(struct Scsi_Host *spnt)
  47 {
  48         return "";
  49 }
  50
  51 #ifdef NOT_EFFICIENT
  52 #define CTRL(p,v)     outb(*ctrl = (v), (p) - 577)
  53 #define STAT(p)       inb((p)+1)
  54 #define IN(p)         inb((p))
  55 #define OUT(v,p)      outb((v), (p))
  56 #else
  57 #define CTRL(p,v)       (p[-2308] = (*ctrl = (v)))
  58 #define STAT(p)         (p[4])
  59 #define IN(p)           (*(p))
  60 #define IN2(p)          ((unsigned short)(*(volatile unsigned long *)(p)))
  61 #define OUT(v,p)        (*(p) = (v))
  62 #define OUT2(v,p)       (*((volatile unsigned long *)(p)) = (v))
  63 #endif
  64 #define L(v)            (((v)<<16)|((v) & 0x0000ffff))
  65 #define H(v)            (((v)>>16)|((v) & 0xffff0000))
  66
  67 static inline int
  68 NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len)
  69 {
  70   int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
  71   int oldctrl = *ctrl;
  72   unsigned long *laddr;
  73 #ifdef NOT_EFFICIENT
  74   int iobase = instance->io_port;
  75   int dma_io = iobase & ~(0x3C0000>>2);
  76 #else
  77   volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
  78   volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
  79 #endif
  80
  81   if(!len) return 0;
  82
  83   CTRL(iobase, 0x02);
  84   laddr = (unsigned long *)addr;
  85   while(len >= 32)
  86   {
  87     int status;
  88     unsigned long v;
  89     status = STAT(iobase);
  90     if(status & 0x80)
  91       goto end;
  92     if(!(status & 0x40))
  93       continue;
  94     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
  95     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
  96     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
  97     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
  98     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
  99     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
 100     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
 101     v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
 102     len -= 32;
 103     if(len == 0)
 104       break;
 105   }
 106
 107   addr = (unsigned char *)laddr;
 108   CTRL(iobase, 0x12);
 109   while(len > 0)
 110   {
 111     int status;
 112     status = STAT(iobase);
 113     if(status & 0x80)
 114       goto end;
 115     if(status & 0x40)
 116     {
 117       OUT(*addr++, dma_io);
 118       if(--len == 0)
 119         break;
 120     }
 121
 122     status = STAT(iobase);
 123     if(status & 0x80)
 124       goto end;
 125     if(status & 0x40)
 126     {
 127       OUT(*addr++, dma_io);
 128       if(--len == 0)
 129         break;
 130     }
 131   }
 132 end:
 133   CTRL(iobase, oldctrl|0x40);
 134   return len;
 135 }
 136
 137 static inline int
 138 NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len)
 139 {
 140   int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
 141   int oldctrl = *ctrl;
 142   unsigned long *laddr;
 143 #ifdef NOT_EFFICIENT
 144   int iobase = instance->io_port;
 145   int dma_io = iobase & ~(0x3C0000>>2);
 146 #else
 147   volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
 148   volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
 149 #endif
 150
 151   if(!len) return 0;
 152
 153   CTRL(iobase, 0x00);
 154   laddr = (unsigned long *)addr;
 155   while(len >= 32)
 156   {
 157     int status;
 158     status = STAT(iobase);
 159     if(status & 0x80)
 160       goto end;
 161     if(!(status & 0x40))
 162       continue;
 163     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 164     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 165     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 166     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 167     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 168     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 169     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 170     *laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
 171     len -= 32;
 172     if(len == 0)
 173       break;
 174   }
 175
 176   addr = (unsigned char *)laddr;
 177   CTRL(iobase, 0x10);
 178   while(len > 0)
 179   {
 180     int status;
 181     status = STAT(iobase);
 182     if(status & 0x80)
 183       goto end;
 184     if(status & 0x40)
 185     {
 186       *addr++ = IN(dma_io);
 187       if(--len == 0)
 188         break;
 189     }
 190
 191     status = STAT(iobase);
 192     if(status & 0x80)
 193       goto end;
 194     if(status & 0x40)
 195     {
 196       *addr++ = IN(dma_io);
 197       if(--len == 0)
 198         break;
 199     }
 200   }
 201 end:
 202   CTRL(iobase, oldctrl|0x40);
 203   return len;
 204 }
 205
 206 #undef STAT
 207 #undef CTRL
 208 #undef IN
 209 #undef OUT
 210
 211 #define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
 212
 213 static char cumanascsi_read(struct Scsi_Host *instance, int reg)
 214 {
 215         unsigned int iobase = instance->io_port;
 216         int i;
 217         int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
 218
 219         CTRL(iobase, 0);
 220         i = inb(iobase + 64 + reg);
 221         CTRL(iobase, 0x40);
 222
 223         return i;
 224 }
 225
 226 static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
 227 {
 228         int iobase = instance->io_port;
 229         int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
 230
 231         CTRL(iobase, 0);
 232         outb(value, iobase + 64 + reg);
 233         CTRL(iobase, 0x40);
 234 }
 235
 236 #undef CTRL
 237
 238 #include "../NCR5380.c"
 239
 240 static struct scsi_host_template cumanascsi_template = {
 241         .module                 = THIS_MODULE,
 242         .name                   = "Cumana 16-bit SCSI",
 243         .info                   = cumanascsi_info,
 244         .queuecommand           = cumanascsi_queue_command,
 245         .eh_abort_handler       = NCR5380_abort,
 246         .eh_bus_reset_handler   = NCR5380_bus_reset,
 247         .can_queue              = 16,
 248         .this_id                = 7,
 249         .sg_tablesize           = SG_ALL,
 250         .cmd_per_lun            = 2,
 251         .unchecked_isa_dma      = 0,
 252         .use_clustering         = DISABLE_CLUSTERING,
 253         .proc_name              = "CumanaSCSI-1",
 254 };
 255
 256 static int __devinit
 257 cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
 258 {
 259         struct Scsi_Host *host;
 260         int ret = -ENOMEM;
 261
 262         host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
 263         if (!host)
 264                 goto out;
 265
 266         host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800;
 267         host->irq = ec->irq;
 268
 269         NCR5380_init(host, 0);
 270
 271         host->n_io_port = 255;
 272         if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
 273                 ret = -EBUSY;
 274                 goto out_free;
 275         }
 276
 277         ((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0;
 278         outb(0x00, host->io_port - 577);
 279
 280         ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
 281                           "CumanaSCSI-1", host);
 282         if (ret) {
 283                 printk("scsi%d: IRQ%d not free: %d\n",
 284                     host->host_no, host->irq, ret);
 285                 goto out_release;
 286         }
 287
 288         printk("scsi%d: at port 0x%08lx irq %d",
 289                 host->host_no, host->io_port, host->irq);
 290         printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
 291                 host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
 292         printk("\nscsi%d:", host->host_no);
 293         NCR5380_print_options(host);
 294         printk("\n");
 295
 296         ret = scsi_add_host(host, &ec->dev);
 297         if (ret)
 298                 goto out_free_irq;
 299
 300         scsi_scan_host(host);
 301         goto out;
 302
 303  out_free_irq:
 304         free_irq(host->irq, host);
 305  out_release:
 306         release_region(host->io_port, host->n_io_port);
 307  out_free:
 308         scsi_host_put(host);
 309  out:
 310         return ret;
 311 }
 312
 313 static void __devexit cumanascsi1_remove(struct expansion_card *ec)
 314 {
 315         struct Scsi_Host *host = ecard_get_drvdata(ec);
 316
 317         ecard_set_drvdata(ec, NULL);
 318
 319         scsi_remove_host(host);
 320         free_irq(host->irq, host);
 321         NCR5380_exit(host);
 322         release_region(host->io_port, host->n_io_port);
 323         scsi_host_put(host);
 324 }
 325
 326 static const struct ecard_id cumanascsi1_cids[] = {
 327         { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
 328         { 0xffff, 0xffff }
 329 };
 330
 331 static struct ecard_driver cumanascsi1_driver = {
 332         .probe          = cumanascsi1_probe,
 333         .remove         = __devexit_p(cumanascsi1_remove),
 334         .id_table       = cumanascsi1_cids,
 335         .drv = {
 336                 .name           = "cumanascsi1",
 337         },
 338 };
 339
 340 static int __init cumanascsi_init(void)
 341 {
 342         return ecard_register_driver(&cumanascsi1_driver);
 343 }
 344
 345 static void __exit cumanascsi_exit(void)
 346 {
 347         ecard_remove_driver(&cumanascsi1_driver);
 348 }
 349
 350 module_init(cumanascsi_init);
 351 module_exit(cumanascsi_exit);
 352
 353 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
 354 MODULE_LICENSE("GPL");