drivers/scsi/sim710.c

   1 /*
   2  * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
   3  *
   4  *----------------------------------------------------------------------------
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *----------------------------------------------------------------------------
  19  *
  20  * MCA card detection code by Trent McNair.
  21  * Fixes to not explicitly nul bss data from Xavier Bestel.
  22  * Some multiboard fixes from Rolf Eike Beer.
  23  * Auto probing of EISA config space from Trevor Hemsley.
  24  *
  25  * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
  26  *
  27  */
  28
  29 #include <linux/config.h>
  30 #include <linux/module.h>
  31
  32 #include <linux/blkdev.h>
  33 #include <linux/device.h>
  34 #include <linux/init.h>
  35 #include <linux/mca.h>
  36 #include <linux/eisa.h>
  37 #include <linux/interrupt.h>
  38 #include <scsi/scsi_host.h>
  39
  40 #include "53c700.h"
  41
  42
  43 /* Must be enough for both EISA and MCA */
  44 #define MAX_SLOTS 8
  45 static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
  46
  47 char *sim710;           /* command line passed by insmod */
  48
  49 MODULE_AUTHOR("Richard Hirst");
  50 MODULE_DESCRIPTION("Simple NCR53C710 driver");
  51 MODULE_LICENSE("GPL");
  52
  53 MODULE_PARM(sim710, "s");
  54
  55 #ifdef MODULE
  56 #define ARG_SEP ' '
  57 #else
  58 #define ARG_SEP ','
  59 #endif
  60
  61 __init int
  62 param_setup(char *str)
  63 {
  64         char *pos = str, *next;
  65         int slot = -1;
  66
  67         while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
  68                 int val = (int)simple_strtoul(++next, NULL, 0);
  69
  70                 if(!strncmp(pos, "slot:", 5))
  71                         slot = val;
  72                 else if(!strncmp(pos, "id:", 3)) {
  73                         if(slot == -1) {
  74                                 printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
  75                         } else if(slot > MAX_SLOTS) {
  76                                 printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
  77                         } else {
  78                                 id_array[slot] = val;
  79                         }
  80                 }
  81                 if((pos = strchr(pos, ARG_SEP)) != NULL)
  82                         pos++;
  83         }
  84         return 1;
  85 }
  86 __setup("sim710=", param_setup);
  87
  88 static struct scsi_host_template sim710_driver_template = {
  89         .name                   = "LSI (Symbios) 710 MCA/EISA",
  90         .proc_name              = "sim710",
  91         .this_id                = 7,
  92         .module                 = THIS_MODULE,
  93 };
  94
  95 static __devinit int
  96 sim710_probe_common(struct device *dev, unsigned long base_addr,
  97                     int irq, int clock, int differential, int scsi_id)
  98 {
  99         struct Scsi_Host * host = NULL;
 100         struct NCR_700_Host_Parameters *hostdata =
 101                 kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
 102
 103         printk(KERN_NOTICE "sim710: %s\n", dev->bus_id);
 104         printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
 105                irq, clock, base_addr, scsi_id);
 106
 107         if(hostdata == NULL) {
 108                 printk(KERN_ERR "sim710: Failed to allocate host data\n");
 109                 goto out;
 110         }
 111         memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
 112
 113         if(request_region(base_addr, 64, "sim710") == NULL) {
 114                 printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
 115                        base_addr);
 116                 goto out_free;
 117         }
 118
 119         /* Fill in the three required pieces of hostdata */
 120         hostdata->base = base_addr;
 121         hostdata->differential = differential;
 122         hostdata->clock = clock;
 123         hostdata->chip710 = 1;
 124         NCR_700_set_io_mapped(hostdata);
 125
 126         /* and register the chip */
 127         if((host = NCR_700_detect(&sim710_driver_template, hostdata)) == NULL) {
 128                 printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
 129                 goto out_release;
 130         }
 131
 132         host->irq = irq;
 133         host->this_id = scsi_id;
 134
 135         if(request_irq(irq, NCR_700_intr, SA_SHIRQ, "sim710", host)) {
 136                 printk(KERN_ERR "sim710: irq problem with %d, detaching\n",
 137                        irq);
 138                 goto out_unregister;
 139         }
 140
 141         scsi_add_host(host, dev); /* XXX handle failure */
 142         scsi_scan_host(host);
 143         hostdata->dev = dev;
 144
 145         return 0;
 146
 147  out_unregister:
 148         scsi_host_put(host);
 149  out_release:
 150         release_region(host->base, 64);
 151  out_free:
 152         kfree(hostdata);
 153  out:
 154         return -ENODEV;
 155 }
 156
 157 static __devexit int
 158 sim710_device_remove(struct device *dev)
 159 {
 160         struct Scsi_Host *host = dev_to_shost(dev);
 161         struct NCR_700_Host_Parameters *hostdata =
 162                 (struct NCR_700_Host_Parameters *)host->hostdata[0];
 163
 164         scsi_remove_host(host);
 165         NCR_700_release(host);
 166         kfree(hostdata);
 167         free_irq(host->irq, host);
 168         return 0;
 169 }
 170
 171 #ifdef CONFIG_MCA
 172
 173 /* CARD ID 01BB and 01BA use the same pos values */
 174 #define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
 175                             0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
 176                             0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
 177                             0x4000, 0x4400, 0x4800, 0x4C00, 0x5000  }
 178
 179 #define MCA_01BB_IRQS { 3, 5, 11, 14 }
 180
 181 /* CARD ID 004f */
 182 #define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500,  0x0600 }
 183 #define MCA_004F_IRQS { 5, 9, 14 }
 184
 185 static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};
 186
 187 static __init int
 188 sim710_mca_probe(struct device *dev)
 189 {
 190         struct mca_device *mca_dev = to_mca_device(dev);
 191         int slot = mca_dev->slot;
 192         int pos[3];
 193         unsigned int base;
 194         int irq_vector;
 195         short id = sim710_mca_id_table[mca_dev->index];
 196         static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
 197         static int irq_004f_by_pos[] = MCA_004F_IRQS;
 198         static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
 199         static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
 200         char *name;
 201         int clock;
 202
 203         pos[0] = mca_device_read_stored_pos(mca_dev, 2);
 204         pos[1] = mca_device_read_stored_pos(mca_dev, 3);
 205         pos[2] = mca_device_read_stored_pos(mca_dev, 4);
 206
 207         /*
 208          * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
 209          *
 210          *    000000  <disabled>   001010  0x2800
 211          *    000001  <invalid>    001011  0x2C00
 212          *    000010  0x0800       001100  0x3000
 213          *    000011  0x0C00       001101  0x3400
 214          *    000100  0x1000       001110  0x3800
 215          *    000101  0x1400       001111  0x3C00
 216          *    000110  0x1800       010000  0x4000
 217          *    000111  0x1C00       010001  0x4400
 218          *    001000  0x2000       010010  0x4800
 219          *    001001  0x2400       010011  0x4C00
 220          *                         010100  0x5000
 221          *
 222          * 00F4 port base by bits 3,2,1 in pos[0]
 223          *
 224          *    000  <disabled>      001    0x200
 225          *    010  0x300           011    0x400
 226          *    100  0x500           101    0x600
 227          *
 228          * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
 229          *
 230          *    00   3               10   11
 231          *    01   5               11   14
 232          *
 233          * 00F4 IRQ specified by bits 6,5,4 in pos[0]
 234          *
 235          *    100   5              101    9
 236          *    110   14
 237          */
 238
 239         if (id == 0x01bb || id == 0x01ba) {
 240                 base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
 241                 irq_vector =
 242                         irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];
 243
 244                 clock = 50;
 245                 if (id == 0x01bb)
 246                         name = "NCR 3360/3430 SCSI SubSystem";
 247                 else
 248                         name = "NCR Dual SIOP SCSI Host Adapter Board";
 249         } else if ( id == 0x004f ) {
 250                 base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
 251                 irq_vector =
 252                         irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
 253                 clock = 50;
 254                 name = "NCR 53c710 SCSI Host Adapter Board";
 255         } else {
 256                 return -ENODEV;
 257         }
 258         mca_device_set_name(mca_dev, name);
 259         mca_device_set_claim(mca_dev, 1);
 260         base = mca_device_transform_ioport(mca_dev, base);
 261         irq_vector = mca_device_transform_irq(mca_dev, irq_vector);
 262
 263         return sim710_probe_common(dev, base, irq_vector, clock,
 264                                    0, id_array[slot]);
 265 }
 266
 267 static struct mca_driver sim710_mca_driver = {
 268         .id_table               = sim710_mca_id_table,
 269         .driver = {
 270                 .name           = "sim710",
 271                 .bus            = &mca_bus_type,
 272                 .probe          = sim710_mca_probe,
 273                 .remove         = __devexit_p(sim710_device_remove),
 274         },
 275 };
 276
 277 #endif /* CONFIG_MCA */
 278
 279 #ifdef CONFIG_EISA
 280 static struct eisa_device_id sim710_eisa_ids[] = {
 281         { "CPQ4410" },
 282         { "CPQ4411" },
 283         { "HWP0C80" },
 284         { "" }
 285 };
 286
 287 static __init int
 288 sim710_eisa_probe(struct device *dev)
 289 {
 290         struct eisa_device *edev = to_eisa_device(dev);
 291         unsigned long io_addr = edev->base_addr;
 292         char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
 293         char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
 294         char *eisa_irqs;
 295         unsigned char irq_index;
 296         unsigned char irq, differential = 0, scsi_id = 7;
 297
 298         if(strcmp(edev->id.sig, "HWP0C80") == 0) {
 299                 __u8 val;
 300                 eisa_irqs =  eisa_hwp_irqs;
 301                 irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
 302
 303                 val = inb(io_addr + 0x4);
 304                 scsi_id = ffs(val) - 1;
 305
 306                 if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
 307                         printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev->bus_id);
 308                         scsi_id = 7;
 309                 }
 310         } else {
 311                 eisa_irqs = eisa_cpq_irqs;
 312                 irq_index = inb(io_addr + 0xc88) & 0x07;
 313         }
 314
 315         if(irq_index >= strlen(eisa_irqs)) {
 316                 printk("sim710.c: irq nasty\n");
 317                 return -ENODEV;
 318         }
 319
 320         irq = eisa_irqs[irq_index];
 321
 322         return sim710_probe_common(dev, io_addr, irq, 50,
 323                                    differential, scsi_id);
 324 }
 325
 326 struct eisa_driver sim710_eisa_driver = {
 327         .id_table               = sim710_eisa_ids,
 328         .driver = {
 329                 .name           = "sim710",
 330                 .probe          = sim710_eisa_probe,
 331                 .remove         = __devexit_p(sim710_device_remove),
 332         },
 333 };
 334 #endif /* CONFIG_EISA */
 335
 336 static int __init sim710_init(void)
 337 {
 338         int err = -ENODEV;
 339
 340 #ifdef MODULE
 341         if (sim710)
 342                 param_setup(sim710);
 343 #endif
 344
 345 #ifdef CONFIG_MCA
 346         err = mca_register_driver(&sim710_mca_driver);
 347 #endif
 348
 349 #ifdef CONFIG_EISA
 350         err = eisa_driver_register(&sim710_eisa_driver);
 351 #endif
 352         /* FIXME: what we'd really like to return here is -ENODEV if
 353          * no devices have actually been found.  Instead, the err
 354          * above actually only reports problems with kobject_register,
 355          * so for the moment return success */
 356
 357         return 0;
 358 }
 359
 360 static void __exit sim710_exit(void)
 361 {
 362 #ifdef CONFIG_MCA
 363         if (MCA_bus)
 364                 mca_unregister_driver(&sim710_mca_driver);
 365 #endif
 366
 367 #ifdef CONFIG_EISA
 368         eisa_driver_unregister(&sim710_eisa_driver);
 369 #endif
 370 }
 371
 372 module_init(sim710_init);
 373 module_exit(sim710_exit);