LXR linux/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/module.h>
  30#include <linux/slab.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
  48static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
  49
  50static char *sim710;            /* command line passed by insmod */
  51
  52MODULE_AUTHOR("Richard Hirst");
  53MODULE_DESCRIPTION("Simple NCR53C710 driver");
  54MODULE_LICENSE("GPL");
  55
  56module_param(sim710, charp, 0);
  57
  58#ifdef MODULE
  59#define ARG_SEP ' '
  60#else
  61#define ARG_SEP ','
  62#endif
  63
  64static __init int
  65param_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
  91static 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
  98static __devinit int
  99sim710_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                kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
 105
 106        printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
 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
 115        if(request_region(base_addr, 64, "sim710") == NULL) {
 116                printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
 117                       base_addr);
 118                goto out_free;
 119        }
 120
 121        /* Fill in the three required pieces of hostdata */
 122        hostdata->base = ioport_map(base_addr, 64);
 123        hostdata->differential = differential;
 124        hostdata->clock = clock;
 125        hostdata->chip710 = 1;
 126        hostdata->burst_length = 8;
 127
 128        /* and register the chip */
 129        if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
 130           == NULL) {
 131                printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
 132                goto out_release;
 133        }
 134        host->this_id = scsi_id;
 135        host->base = base_addr;
 136        host->irq = irq;
 137        if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
 138                printk(KERN_ERR "sim710: request_irq failed\n");
 139                goto out_put_host;
 140        }
 141
 142        dev_set_drvdata(dev, host);
 143        scsi_scan_host(host);
 144
 145        return 0;
 146
 147 out_put_host:
 148        scsi_host_put(host);
 149 out_release:
 150        release_region(base_addr, 64);
 151 out_free:
 152        kfree(hostdata);
 153 out:
 154        return -ENODEV;
 155}
 156
 157static __devexit int
 158sim710_device_remove(struct device *dev)
 159{
 160        struct Scsi_Host *host = dev_get_drvdata(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        release_region(host->base, 64);
 169        return 0;
 170}
 171
 172#ifdef CONFIG_MCA
 173
 174/* CARD ID 01BB and 01BA use the same pos values */
 175#define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
 176                            0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
 177                            0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
 178                            0x4000, 0x4400, 0x4800, 0x4C00, 0x5000  }
 179
 180#define MCA_01BB_IRQS { 3, 5, 11, 14 }
 181
 182/* CARD ID 004f */
 183#define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500,  0x0600 }
 184#define MCA_004F_IRQS { 5, 9, 14 }
 185
 186static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};
 187
 188static __init int
 189sim710_mca_probe(struct device *dev)
 190{
 191        struct mca_device *mca_dev = to_mca_device(dev);
 192        int slot = mca_dev->slot;
 193        int pos[3];
 194        unsigned int base;
 195        int irq_vector;
 196        short id = sim710_mca_id_table[mca_dev->index];
 197        static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
 198        static int irq_004f_by_pos[] = MCA_004F_IRQS;
 199        static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
 200        static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
 201        char *name;
 202        int clock;
 203
 204        pos[0] = mca_device_read_stored_pos(mca_dev, 2);
 205        pos[1] = mca_device_read_stored_pos(mca_dev, 3);
 206        pos[2] = mca_device_read_stored_pos(mca_dev, 4);
 207
 208        /*
 209         * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
 210         *
 211         *    000000  <disabled>   001010  0x2800
 212         *    000001  <invalid>    001011  0x2C00
 213         *    000010  0x0800       001100  0x3000
 214         *    000011  0x0C00       001101  0x3400
 215         *    000100  0x1000       001110  0x3800
 216         *    000101  0x1400       001111  0x3C00
 217         *    000110  0x1800       010000  0x4000
 218         *    000111  0x1C00       010001  0x4400
 219         *    001000  0x2000       010010  0x4800
 220         *    001001  0x2400       010011  0x4C00
 221         *                         010100  0x5000
 222         *
 223         * 00F4 port base by bits 3,2,1 in pos[0]
 224         *
 225         *    000  <disabled>      001    0x200
 226         *    010  0x300           011    0x400
 227         *    100  0x500           101    0x600
 228         *
 229         * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
 230         *
 231         *    00   3               10   11
 232         *    01   5               11   14
 233         *
 234         * 00F4 IRQ specified by bits 6,5,4 in pos[0]
 235         *
 236         *    100   5              101    9
 237         *    110   14
 238         */
 239
 240        if (id == 0x01bb || id == 0x01ba) {
 241                base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
 242                irq_vector =
 243                        irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];
 244
 245                clock = 50;
 246                if (id == 0x01bb)
 247                        name = "NCR 3360/3430 SCSI SubSystem";
 248                else
 249                        name = "NCR Dual SIOP SCSI Host Adapter Board";
 250        } else if ( id == 0x004f ) {
 251                base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
 252                irq_vector =
 253                        irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
 254                clock = 50;
 255                name = "NCR 53c710 SCSI Host Adapter Board";
 256        } else {
 257                return -ENODEV;
 258        }
 259        mca_device_set_name(mca_dev, name);
 260        mca_device_set_claim(mca_dev, 1);
 261        base = mca_device_transform_ioport(mca_dev, base);
 262        irq_vector = mca_device_transform_irq(mca_dev, irq_vector);
 263
 264        return sim710_probe_common(dev, base, irq_vector, clock,
 265                                   0, id_array[slot]);
 266}
 267
 268static struct mca_driver sim710_mca_driver = {
 269        .id_table               = sim710_mca_id_table,
 270        .driver = {
 271                .name           = "sim710",
 272                .bus            = &mca_bus_type,
 273                .probe          = sim710_mca_probe,
 274                .remove         = __devexit_p(sim710_device_remove),
 275        },
 276};
 277
 278#endif /* CONFIG_MCA */
 279
 280#ifdef CONFIG_EISA
 281static struct eisa_device_id sim710_eisa_ids[] = {
 282        { "CPQ4410" },
 283        { "CPQ4411" },
 284        { "HWP0C80" },
 285        { "" }
 286};
 287MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
 288
 289static __init int
 290sim710_eisa_probe(struct device *dev)
 291{
 292        struct eisa_device *edev = to_eisa_device(dev);
 293        unsigned long io_addr = edev->base_addr;
 294        char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
 295        char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
 296        char *eisa_irqs;
 297        unsigned char irq_index;
 298        unsigned char irq, differential = 0, scsi_id = 7;
 299
 300        if(strcmp(edev->id.sig, "HWP0C80") == 0) {
 301                __u8 val;
 302                eisa_irqs =  eisa_hwp_irqs;
 303                irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
 304
 305                val = inb(io_addr + 0x4);
 306                scsi_id = ffs(val) - 1;
 307
 308                if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
 309                        printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
 310                        scsi_id = 7;
 311                }
 312        } else {
 313                eisa_irqs = eisa_cpq_irqs;
 314                irq_index = inb(io_addr + 0xc88) & 0x07;
 315        }
 316
 317        if(irq_index >= strlen(eisa_irqs)) {
 318                printk("sim710.c: irq nasty\n");
 319                return -ENODEV;
 320        }
 321
 322        irq = eisa_irqs[irq_index];
 323                
 324        return sim710_probe_common(dev, io_addr, irq, 50,
 325                                   differential, scsi_id);
 326}
 327
 328static struct eisa_driver sim710_eisa_driver = {
 329        .id_table               = sim710_eisa_ids,
 330        .driver = {
 331                .name           = "sim710",
 332                .probe          = sim710_eisa_probe,
 333                .remove         = __devexit_p(sim710_device_remove),
 334        },
 335};
 336#endif /* CONFIG_EISA */
 337
 338static int __init sim710_init(void)
 339{
 340        int err = -ENODEV;
 341
 342#ifdef MODULE
 343        if (sim710)
 344                param_setup(sim710);
 345#endif
 346
 347#ifdef CONFIG_MCA
 348        err = mca_register_driver(&sim710_mca_driver);
 349#endif
 350
 351#ifdef CONFIG_EISA
 352        err = eisa_driver_register(&sim710_eisa_driver);
 353#endif
 354        /* FIXME: what we'd really like to return here is -ENODEV if
 355         * no devices have actually been found.  Instead, the err
 356         * above actually only reports problems with kobject_register,
 357         * so for the moment return success */
 358
 359        return 0;
 360}
 361
 362static void __exit sim710_exit(void)
 363{
 364#ifdef CONFIG_MCA
 365        if (MCA_bus)
 366                mca_unregister_driver(&sim710_mca_driver);
 367#endif
 368
 369#ifdef CONFIG_EISA
 370        eisa_driver_unregister(&sim710_eisa_driver);
 371#endif
 372}
 373
 374module_init(sim710_init);
 375module_exit(sim710_exit);
 376