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