drivers/ata/pata_pcmcia.c

   1 /*
   2  *   pata_pcmcia.c - PCMCIA PATA controller driver.
   3  *   Copyright 2005-2006 Red Hat Inc, all rights reserved.
   4  *   PCMCIA ident update Copyright 2006 Marcin Juszkiewicz
   5  *                                              <openembedded@hrw.one.pl>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2, or (at your option)
  10  *  any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; see the file COPYING.  If not, write to
  19  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  *   Heavily based upon ide-cs.c
  22  *   The initial developer of the original code is David A. Hinds
  23  *   <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  24  *   are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/init.h>
  30 #include <linux/blkdev.h>
  31 #include <linux/delay.h>
  32 #include <linux/slab.h>
  33 #include <scsi/scsi_host.h>
  34 #include <linux/ata.h>
  35 #include <linux/libata.h>
  36
  37 #include <pcmcia/cistpl.h>
  38 #include <pcmcia/ds.h>
  39 #include <pcmcia/cisreg.h>
  40 #include <pcmcia/ciscode.h>
  41
  42
  43 #define DRV_NAME "pata_pcmcia"
  44 #define DRV_VERSION "0.3.5"
  45
  46 /**
  47  *      pcmcia_set_mode -       PCMCIA specific mode setup
  48  *      @link: link
  49  *      @r_failed_dev: Return pointer for failed device
  50  *
  51  *      Perform the tuning and setup of the devices and timings, which
  52  *      for PCMCIA is the same as any other controller. We wrap it however
  53  *      as we need to spot hardware with incorrect or missing master/slave
  54  *      decode, which alas is embarrassingly common in the PC world
  55  */
  56
  57 static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
  58 {
  59         struct ata_device *master = &link->device[0];
  60         struct ata_device *slave = &link->device[1];
  61
  62         if (!ata_dev_enabled(master) || !ata_dev_enabled(slave))
  63                 return ata_do_set_mode(link, r_failed_dev);
  64
  65         if (memcmp(master->id + ATA_ID_FW_REV,  slave->id + ATA_ID_FW_REV,
  66                            ATA_ID_FW_REV_LEN + ATA_ID_PROD_LEN) == 0) {
  67                 /* Suspicious match, but could be two cards from
  68                    the same vendor - check serial */
  69                 if (memcmp(master->id + ATA_ID_SERNO, slave->id + ATA_ID_SERNO,
  70                            ATA_ID_SERNO_LEN) == 0 && master->id[ATA_ID_SERNO] >> 8) {
  71                         ata_dev_warn(slave, "is a ghost device, ignoring\n");
  72                         ata_dev_disable(slave);
  73                 }
  74         }
  75         return ata_do_set_mode(link, r_failed_dev);
  76 }
  77
  78 /**
  79  *      pcmcia_set_mode_8bit    -       PCMCIA specific mode setup
  80  *      @link: link
  81  *      @r_failed_dev: Return pointer for failed device
  82  *
  83  *      For the simple emulated 8bit stuff the less we do the better.
  84  */
  85
  86 static int pcmcia_set_mode_8bit(struct ata_link *link,
  87                                 struct ata_device **r_failed_dev)
  88 {
  89         return 0;
  90 }
  91
  92 /**
  93  *      ata_data_xfer_8bit       -      Transfer data by 8bit PIO
  94  *      @dev: device to target
  95  *      @buf: data buffer
  96  *      @buflen: buffer length
  97  *      @rw: read/write
  98  *
  99  *      Transfer data from/to the device data register by 8 bit PIO.
 100  *
 101  *      LOCKING:
 102  *      Inherited from caller.
 103  */
 104
 105 static unsigned int ata_data_xfer_8bit(struct ata_device *dev,
 106                                 unsigned char *buf, unsigned int buflen, int rw)
 107 {
 108         struct ata_port *ap = dev->link->ap;
 109
 110         if (rw == READ)
 111                 ioread8_rep(ap->ioaddr.data_addr, buf, buflen);
 112         else
 113                 iowrite8_rep(ap->ioaddr.data_addr, buf, buflen);
 114
 115         return buflen;
 116 }
 117
 118 /**
 119  *      pcmcia_8bit_drain_fifo - Stock FIFO drain logic for SFF controllers
 120  *      @qc: command
 121  *
 122  *      Drain the FIFO and device of any stuck data following a command
 123  *      failing to complete. In some cases this is necessary before a
 124  *      reset will recover the device.
 125  *
 126  */
 127
 128 static void pcmcia_8bit_drain_fifo(struct ata_queued_cmd *qc)
 129 {
 130         int count;
 131         struct ata_port *ap;
 132
 133         /* We only need to flush incoming data when a command was running */
 134         if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)
 135                 return;
 136
 137         ap = qc->ap;
 138
 139         /* Drain up to 64K of data before we give up this recovery method */
 140         for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
 141                                                         && count++ < 65536;)
 142                 ioread8(ap->ioaddr.data_addr);
 143
 144         if (count)
 145                 ata_port_warn(ap, "drained %d bytes to clear DRQ\n", count);
 146
 147 }
 148
 149 static struct scsi_host_template pcmcia_sht = {
 150         ATA_PIO_SHT(DRV_NAME),
 151 };
 152
 153 static struct ata_port_operations pcmcia_port_ops = {
 154         .inherits       = &ata_sff_port_ops,
 155         .sff_data_xfer  = ata_sff_data_xfer_noirq,
 156         .cable_detect   = ata_cable_40wire,
 157         .set_mode       = pcmcia_set_mode,
 158 };
 159
 160 static struct ata_port_operations pcmcia_8bit_port_ops = {
 161         .inherits       = &ata_sff_port_ops,
 162         .sff_data_xfer  = ata_data_xfer_8bit,
 163         .cable_detect   = ata_cable_40wire,
 164         .set_mode       = pcmcia_set_mode_8bit,
 165         .sff_drain_fifo = pcmcia_8bit_drain_fifo,
 166 };
 167
 168
 169 static int pcmcia_check_one_config(struct pcmcia_device *pdev, void *priv_data)
 170 {
 171         int *is_kme = priv_data;
 172
 173         if ((pdev->resource[0]->flags & IO_DATA_PATH_WIDTH)
 174             != IO_DATA_PATH_WIDTH_8) {
 175                 pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
 176                 pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
 177         }
 178         pdev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
 179         pdev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
 180
 181         if (pdev->resource[1]->end) {
 182                 pdev->resource[0]->end = 8;
 183                 pdev->resource[1]->end = (*is_kme) ? 2 : 1;
 184         } else {
 185                 if (pdev->resource[0]->end < 16)
 186                         return -ENODEV;
 187         }
 188
 189         return pcmcia_request_io(pdev);
 190 }
 191
 192 /**
 193  *      pcmcia_init_one         -       attach a PCMCIA interface
 194  *      @pdev: pcmcia device
 195  *
 196  *      Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
 197  *      shared IRQ.
 198  */
 199
 200 static int pcmcia_init_one(struct pcmcia_device *pdev)
 201 {
 202         struct ata_host *host;
 203         struct ata_port *ap;
 204         int is_kme = 0, ret = -ENOMEM, p;
 205         unsigned long io_base, ctl_base;
 206         void __iomem *io_addr, *ctl_addr;
 207         int n_ports = 1;
 208         struct ata_port_operations *ops = &pcmcia_port_ops;
 209
 210         /* Set up attributes in order to probe card and get resources */
 211         pdev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO |
 212                 CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
 213
 214         /* See if we have a manufacturer identifier. Use it to set is_kme for
 215            vendor quirks */
 216         is_kme = ((pdev->manf_id == MANFID_KME) &&
 217                   ((pdev->card_id == PRODID_KME_KXLC005_A) ||
 218                    (pdev->card_id == PRODID_KME_KXLC005_B)));
 219
 220         if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme)) {
 221                 pdev->config_flags &= ~CONF_AUTO_CHECK_VCC;
 222                 if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme))
 223                         goto failed; /* No suitable config found */
 224         }
 225         io_base = pdev->resource[0]->start;
 226         if (pdev->resource[1]->end)
 227                 ctl_base = pdev->resource[1]->start;
 228         else
 229                 ctl_base = pdev->resource[0]->start + 0x0e;
 230
 231         if (!pdev->irq)
 232                 goto failed;
 233
 234         ret = pcmcia_enable_device(pdev);
 235         if (ret)
 236                 goto failed;
 237
 238         /* iomap */
 239         ret = -ENOMEM;
 240         io_addr = devm_ioport_map(&pdev->dev, io_base, 8);
 241         ctl_addr = devm_ioport_map(&pdev->dev, ctl_base, 1);
 242         if (!io_addr || !ctl_addr)
 243                 goto failed;
 244
 245         /* Success. Disable the IRQ nIEN line, do quirks */
 246         iowrite8(0x02, ctl_addr);
 247         if (is_kme)
 248                 iowrite8(0x81, ctl_addr + 0x01);
 249
 250         /* FIXME: Could be more ports at base + 0x10 but we only deal with
 251            one right now */
 252         if (resource_size(pdev->resource[0]) >= 0x20)
 253                 n_ports = 2;
 254
 255         if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620)
 256                 ops = &pcmcia_8bit_port_ops;
 257         /*
 258          *      Having done the PCMCIA plumbing the ATA side is relatively
 259          *      sane.
 260          */
 261         ret = -ENOMEM;
 262         host = ata_host_alloc(&pdev->dev, n_ports);
 263         if (!host)
 264                 goto failed;
 265
 266         for (p = 0; p < n_ports; p++) {
 267                 ap = host->ports[p];
 268
 269                 ap->ops = ops;
 270                 ap->pio_mask = ATA_PIO0;        /* ISA so PIO 0 cycles */
 271                 ap->flags |= ATA_FLAG_SLAVE_POSS;
 272                 ap->ioaddr.cmd_addr = io_addr + 0x10 * p;
 273                 ap->ioaddr.altstatus_addr = ctl_addr + 0x10 * p;
 274                 ap->ioaddr.ctl_addr = ctl_addr + 0x10 * p;
 275                 ata_sff_std_ports(&ap->ioaddr);
 276
 277                 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base);
 278         }
 279
 280         /* activate */
 281         ret = ata_host_activate(host, pdev->irq, ata_sff_interrupt,
 282                                 IRQF_SHARED, &pcmcia_sht);
 283         if (ret)
 284                 goto failed;
 285
 286         pdev->priv = host;
 287         return 0;
 288
 289 failed:
 290         pcmcia_disable_device(pdev);
 291         return ret;
 292 }
 293
 294 /**
 295  *      pcmcia_remove_one       -       unplug an pcmcia interface
 296  *      @pdev: pcmcia device
 297  *
 298  *      A PCMCIA ATA device has been unplugged. Perform the needed
 299  *      cleanup. Also called on module unload for any active devices.
 300  */
 301
 302 static void pcmcia_remove_one(struct pcmcia_device *pdev)
 303 {
 304         struct ata_host *host = pdev->priv;
 305
 306         if (host)
 307                 ata_host_detach(host);
 308
 309         pcmcia_disable_device(pdev);
 310 }
 311
 312 static const struct pcmcia_device_id pcmcia_devices[] = {
 313         PCMCIA_DEVICE_FUNC_ID(4),
 314         PCMCIA_DEVICE_MANF_CARD(0x0000, 0x0000),        /* Corsair */
 315         PCMCIA_DEVICE_MANF_CARD(0x0007, 0x0000),        /* Hitachi */
 316         PCMCIA_DEVICE_MANF_CARD(0x000a, 0x0000),        /* I-O Data CFA */
 317         PCMCIA_DEVICE_MANF_CARD(0x001c, 0x0001),        /* Mitsubishi CFA */
 318         PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704),
 319         PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904),
 320         PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401),        /* SanDisk CFA */
 321         PCMCIA_DEVICE_MANF_CARD(0x004f, 0x0000),        /* Kingston */
 322         PCMCIA_DEVICE_MANF_CARD(0x0097, 0x1620),        /* TI emulated */
 323         PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000),        /* Toshiba */
 324         PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d),
 325         PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000),        /* Samsung */
 326         PCMCIA_DEVICE_MANF_CARD(0x0319, 0x0000),        /* Hitachi */
 327         PCMCIA_DEVICE_MANF_CARD(0x2080, 0x0001),
 328         PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0100),        /* Viking CFA */
 329         PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0200),        /* Lexar, Viking CFA */
 330         PCMCIA_DEVICE_PROD_ID123("Caravelle", "PSC-IDE ", "PSC000", 0x8c36137c, 0xd0693ab8, 0x2768a9f0),
 331         PCMCIA_DEVICE_PROD_ID123("CDROM", "IDE", "MCD-601p", 0x1b9179ca, 0xede88951, 0x0d902f74),
 332         PCMCIA_DEVICE_PROD_ID123("PCMCIA", "IDE CARD", "F1", 0x281f1c5d, 0x1907960c, 0xf7fde8b9),
 333         PCMCIA_DEVICE_PROD_ID12("ARGOSY", "CD-ROM", 0x78f308dc, 0x66536591),
 334         PCMCIA_DEVICE_PROD_ID12("ARGOSY", "PnPIDE", 0x78f308dc, 0x0c694728),
 335         PCMCIA_DEVICE_PROD_ID12("CNF   ", "CD-ROM", 0x46d7db81, 0x66536591),
 336         PCMCIA_DEVICE_PROD_ID12("CNF CD-M", "CD-ROM", 0x7d93b852, 0x66536591),
 337         PCMCIA_DEVICE_PROD_ID12("Creative Technology Ltd.", "PCMCIA CD-ROM Interface Card", 0xff8c8a45, 0xfe8020c4),
 338         PCMCIA_DEVICE_PROD_ID12("Digital Equipment Corporation.", "Digital Mobile Media CD-ROM", 0x17692a66, 0xef1dcbde),
 339         PCMCIA_DEVICE_PROD_ID12("EXP", "CD+GAME", 0x6f58c983, 0x63c13aaf),
 340         PCMCIA_DEVICE_PROD_ID12("EXP   ", "CD-ROM", 0x0a5c52fd, 0x66536591),
 341         PCMCIA_DEVICE_PROD_ID12("EXP   ", "PnPIDE", 0x0a5c52fd, 0x0c694728),
 342         PCMCIA_DEVICE_PROD_ID12("FREECOM", "PCCARD-IDE", 0x5714cbf7, 0x48e0ab8e),
 343         PCMCIA_DEVICE_PROD_ID12("HITACHI", "FLASH", 0xf4f43949, 0x9eb86aae),
 344         PCMCIA_DEVICE_PROD_ID12("HITACHI", "microdrive", 0xf4f43949, 0xa6d76178),
 345         PCMCIA_DEVICE_PROD_ID12("Hyperstone", "Model1", 0x3d5b9ef5, 0xca6ab420),
 346         PCMCIA_DEVICE_PROD_ID12("IBM", "microdrive", 0xb569a6e5, 0xa6d76178),
 347         PCMCIA_DEVICE_PROD_ID12("IBM", "IBM17JSSFP20", 0xb569a6e5, 0xf2508753),
 348         PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF CARD 1GB", 0x2e6d1829, 0x55d5bffb),
 349         PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF CARD 4GB", 0x2e6d1829, 0x531e7d10),
 350         PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF8GB", 0x2e6d1829, 0xacbe682e),
 351         PCMCIA_DEVICE_PROD_ID12("IO DATA", "CBIDE2      ", 0x547e66dc, 0x8671043b),
 352         PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDE", 0x547e66dc, 0x5c5ab149),
 353         PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDEII", 0x547e66dc, 0xb3662674),
 354         PCMCIA_DEVICE_PROD_ID12("LOOKMEET", "CBIDE2      ", 0xe37be2b5, 0x8671043b),
 355         PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF300", 0x7ed2ad87, 0x7e9e78ee),
 356         PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF500", 0x7ed2ad87, 0x7a13045c),
 357         PCMCIA_DEVICE_PROD_ID2("NinjaATA-", 0xebe0bd79),
 358         PCMCIA_DEVICE_PROD_ID12("PCMCIA", "CD-ROM", 0x281f1c5d, 0x66536591),
 359         PCMCIA_DEVICE_PROD_ID12("PCMCIA", "PnPIDE", 0x281f1c5d, 0x0c694728),
 360         PCMCIA_DEVICE_PROD_ID12("SHUTTLE TECHNOLOGY LTD.", "PCCARD-IDE/ATAPI Adapter", 0x4a3f0ba0, 0x322560e1),
 361         PCMCIA_DEVICE_PROD_ID12("SEAGATE", "ST1", 0x87c1b330, 0xe1f30883),
 362         PCMCIA_DEVICE_PROD_ID12("SAMSUNG", "04/05/06", 0x43d74cb4, 0x6a22777d),
 363         PCMCIA_DEVICE_PROD_ID12("SMI VENDOR", "SMI PRODUCT", 0x30896c92, 0x703cc5f6),
 364         PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "MK2001MPL", 0xb4585a1a, 0x3489e003),
 365         PCMCIA_DEVICE_PROD_ID1("TRANSCEND    512M   ", 0xd0909443),
 366         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF45", 0x709b1bf1, 0xf68b6f32),
 367         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF80", 0x709b1bf1, 0x2a54d4b1),
 368         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS2GCF120", 0x709b1bf1, 0x969aa4f2),
 369         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF120", 0x709b1bf1, 0xf54a91c8),
 370         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF133", 0x709b1bf1, 0x7558f133),
 371         PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS8GCF133", 0x709b1bf1, 0xb2f89b47),
 372         PCMCIA_DEVICE_PROD_ID12("WIT", "IDE16", 0x244e5994, 0x3e232852),
 373         PCMCIA_DEVICE_PROD_ID12("WEIDA", "TWTTI", 0xcc7cf69c, 0x212bb918),
 374         PCMCIA_DEVICE_PROD_ID1("STI Flash", 0xe4a13209),
 375         PCMCIA_DEVICE_PROD_ID12("STI", "Flash 5.0", 0xbf2df18d, 0x8cb57a0e),
 376         PCMCIA_MFC_DEVICE_PROD_ID12(1, "SanDisk", "ConnectPlus", 0x7a954bd9, 0x74be00c6),
 377         PCMCIA_DEVICE_PROD_ID2("Flash Card", 0x5a362506),
 378         PCMCIA_DEVICE_NULL,
 379 };
 380
 381 MODULE_DEVICE_TABLE(pcmcia, pcmcia_devices);
 382
 383 static struct pcmcia_driver pcmcia_driver = {
 384         .owner          = THIS_MODULE,
 385         .name           = DRV_NAME,
 386         .id_table       = pcmcia_devices,
 387         .probe          = pcmcia_init_one,
 388         .remove         = pcmcia_remove_one,
 389 };
 390
 391 static int __init pcmcia_init(void)
 392 {
 393         return pcmcia_register_driver(&pcmcia_driver);
 394 }
 395
 396 static void __exit pcmcia_exit(void)
 397 {
 398         pcmcia_unregister_driver(&pcmcia_driver);
 399 }
 400
 401 MODULE_AUTHOR("Alan Cox");
 402 MODULE_DESCRIPTION("low-level driver for PCMCIA ATA");
 403 MODULE_LICENSE("GPL");
 404 MODULE_VERSION(DRV_VERSION);
 405
 406 module_init(pcmcia_init);
 407 module_exit(pcmcia_exit);