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