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pata_pcmcia.c

/*
 *   pata_pcmcia.c - PCMCIA PATA controller driver.
 *   Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
 *   PCMCIA ident update Copyright 2006 Marcin Juszkiewicz
 *                                  <openembedded@hrw.one.pl>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *   Heavily based upon ide-cs.c
 *   The initial developer of the original code is David A. Hinds
 *   <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 *   are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ciscode.h>


#define DRV_NAME "pata_pcmcia"
#define DRV_VERSION "0.3.2"

/*
 *    Private data structure to glue stuff together
 */

struct ata_pcmcia_info {
      struct pcmcia_device *pdev;
      int         ndev;
      dev_node_t  node;
};

/**
 *    pcmcia_set_mode   -     PCMCIA specific mode setup
 *    @link: link
 *    @r_failed_dev: Return pointer for failed device
 *
 *    Perform the tuning and setup of the devices and timings, which
 *    for PCMCIA is the same as any other controller. We wrap it however
 *    as we need to spot hardware with incorrect or missing master/slave
 *    decode, which alas is embarrassingly common in the PC world
 */

static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
{
      struct ata_device *master = &link->device[0];
      struct ata_device *slave = &link->device[1];

      if (!ata_dev_enabled(master) || !ata_dev_enabled(slave))
            return ata_do_set_mode(link, r_failed_dev);

      if (memcmp(master->id + ATA_ID_FW_REV,  slave->id + ATA_ID_FW_REV,
                     ATA_ID_FW_REV_LEN + ATA_ID_PROD_LEN) == 0) {
            /* Suspicious match, but could be two cards from
               the same vendor - check serial */
            if (memcmp(master->id + ATA_ID_SERNO, slave->id + ATA_ID_SERNO,
                     ATA_ID_SERNO_LEN) == 0 && master->id[ATA_ID_SERNO] >> 8) {
                  ata_dev_printk(slave, KERN_WARNING, "is a ghost device, ignoring.\n");
                  ata_dev_disable(slave);
            }
      }
      return ata_do_set_mode(link, r_failed_dev);
}

static struct scsi_host_template pcmcia_sht = {
      .module                 = THIS_MODULE,
      .name             = DRV_NAME,
      .ioctl                  = ata_scsi_ioctl,
      .queuecommand           = ata_scsi_queuecmd,
      .can_queue        = ATA_DEF_QUEUE,
      .this_id          = ATA_SHT_THIS_ID,
      .sg_tablesize           = LIBATA_MAX_PRD,
      .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
      .emulated         = ATA_SHT_EMULATED,
      .use_clustering         = ATA_SHT_USE_CLUSTERING,
      .proc_name        = DRV_NAME,
      .dma_boundary           = ATA_DMA_BOUNDARY,
      .slave_configure  = ata_scsi_slave_config,
      .slave_destroy          = ata_scsi_slave_destroy,
      .bios_param       = ata_std_bios_param,
};

static struct ata_port_operations pcmcia_port_ops = {
      .set_mode   = pcmcia_set_mode,
      .tf_load    = ata_tf_load,
      .tf_read    = ata_tf_read,
      .check_status     = ata_check_status,
      .exec_command     = ata_exec_command,
      .dev_select       = ata_std_dev_select,

      .freeze           = ata_bmdma_freeze,
      .thaw       = ata_bmdma_thaw,
      .error_handler    = ata_bmdma_error_handler,
      .post_internal_cmd = ata_bmdma_post_internal_cmd,
      .cable_detect     = ata_cable_40wire,

      .qc_prep    = ata_qc_prep,
      .qc_issue   = ata_qc_issue_prot,

      .data_xfer  = ata_data_xfer_noirq,

      .irq_clear  = ata_bmdma_irq_clear,
      .irq_on           = ata_irq_on,

      .port_start = ata_sff_port_start,
};

#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

/**
 *    pcmcia_init_one         -     attach a PCMCIA interface
 *    @pdev: pcmcia device
 *
 *    Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
 *    shared IRQ.
 */

static int pcmcia_init_one(struct pcmcia_device *pdev)
{
      struct ata_host *host;
      struct ata_port *ap;
      struct ata_pcmcia_info *info;
      tuple_t tuple;
      struct {
            unsigned short buf[128];
            cisparse_t parse;
            config_info_t conf;
            cistpl_cftable_entry_t dflt;
      } *stk = NULL;
      cistpl_cftable_entry_t *cfg;
      int pass, last_ret = 0, last_fn = 0, is_kme = 0, ret = -ENOMEM;
      unsigned long io_base, ctl_base;
      void __iomem *io_addr, *ctl_addr;

      info = kzalloc(sizeof(*info), GFP_KERNEL);
      if (info == NULL)
            return -ENOMEM;

      /* Glue stuff together. FIXME: We may be able to get rid of info with care */
      info->pdev = pdev;
      pdev->priv = info;

      /* Set up attributes in order to probe card and get resources */
      pdev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
      pdev->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
      pdev->io.IOAddrLines = 3;
      pdev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
      pdev->irq.IRQInfo1 = IRQ_LEVEL_ID;
      pdev->conf.Attributes = CONF_ENABLE_IRQ;
      pdev->conf.IntType = INT_MEMORY_AND_IO;

      /* Allocate resoure probing structures */

      stk = kzalloc(sizeof(*stk), GFP_KERNEL);
      if (!stk)
            goto out1;

      cfg = &stk->parse.cftable_entry;

      /* Tuples we are walking */
      tuple.TupleData = (cisdata_t *)&stk->buf;
      tuple.TupleOffset = 0;
      tuple.TupleDataMax = 255;
      tuple.Attributes = 0;

      /* See if we have a manufacturer identifier. Use it to set is_kme for
         vendor quirks */
      is_kme = ((pdev->manf_id == MANFID_KME) &&
              ((pdev->card_id == PRODID_KME_KXLC005_A) ||
               (pdev->card_id == PRODID_KME_KXLC005_B)));

      /* Not sure if this is right... look up the current Vcc */
      CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(pdev, &stk->conf));
/*    link->conf.Vcc = stk->conf.Vcc; */

      pass = io_base = ctl_base = 0;
      tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
      tuple.Attributes = 0;
      CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(pdev, &tuple));

      /* Now munch the resources looking for a suitable set */
      while (1) {
            if (pcmcia_get_tuple_data(pdev, &tuple) != 0)
                  goto next_entry;
            if (pcmcia_parse_tuple(pdev, &tuple, &stk->parse) != 0)
                  goto next_entry;
            /* Check for matching Vcc, unless we're desperate */
            if (!pass) {
                  if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
                        if (stk->conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
                              goto next_entry;
                  } else if (stk->dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
                        if (stk->conf.Vcc != stk->dflt.vcc.param[CISTPL_POWER_VNOM] / 10000)
                              goto next_entry;
                  }
            }

            if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
                  pdev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
            else if (stk->dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
                  pdev->conf.Vpp = stk->dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;

            if ((cfg->io.nwin > 0) || (stk->dflt.io.nwin > 0)) {
                  cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &stk->dflt.io;
                  pdev->conf.ConfigIndex = cfg->index;
                  pdev->io.BasePort1 = io->win[0].base;
                  pdev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
                  if (!(io->flags & CISTPL_IO_16BIT))
                        pdev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
                  if (io->nwin == 2) {
                        pdev->io.NumPorts1 = 8;
                        pdev->io.BasePort2 = io->win[1].base;
                        pdev->io.NumPorts2 = (is_kme) ? 2 : 1;
                        if (pcmcia_request_io(pdev, &pdev->io) != 0)
                              goto next_entry;
                        io_base = pdev->io.BasePort1;
                        ctl_base = pdev->io.BasePort2;
                  } else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
                        pdev->io.NumPorts1 = io->win[0].len;
                        pdev->io.NumPorts2 = 0;
                        if (pcmcia_request_io(pdev, &pdev->io) != 0)
                              goto next_entry;
                        io_base = pdev->io.BasePort1;
                        ctl_base = pdev->io.BasePort1 + 0x0e;
                  } else
                        goto next_entry;
                  /* If we've got this far, we're done */
                  break;
            }
next_entry:
            if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
                  memcpy(&stk->dflt, cfg, sizeof(stk->dflt));
            if (pass) {
                  CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(pdev, &tuple));
            } else if (pcmcia_get_next_tuple(pdev, &tuple) != 0) {
                  CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(pdev, &tuple));
                  memset(&stk->dflt, 0, sizeof(stk->dflt));
                  pass++;
            }
      }

      CS_CHECK(RequestIRQ, pcmcia_request_irq(pdev, &pdev->irq));
      CS_CHECK(RequestConfiguration, pcmcia_request_configuration(pdev, &pdev->conf));

      /* iomap */
      ret = -ENOMEM;
      io_addr = devm_ioport_map(&pdev->dev, io_base, 8);
      ctl_addr = devm_ioport_map(&pdev->dev, ctl_base, 1);
      if (!io_addr || !ctl_addr)
            goto failed;

      /* Success. Disable the IRQ nIEN line, do quirks */
      iowrite8(0x02, ctl_addr);
      if (is_kme)
            iowrite8(0x81, ctl_addr + 0x01);

      /* FIXME: Could be more ports at base + 0x10 but we only deal with
         one right now */
      if (pdev->io.NumPorts1 >= 0x20)
            printk(KERN_WARNING DRV_NAME ": second channel not yet supported.\n");

      /*
       *    Having done the PCMCIA plumbing the ATA side is relatively
       *    sane.
       */
      ret = -ENOMEM;
      host = ata_host_alloc(&pdev->dev, 1);
      if (!host)
            goto failed;
      ap = host->ports[0];

      ap->ops = &pcmcia_port_ops;
      ap->pio_mask = 1;       /* ISA so PIO 0 cycles */
      ap->flags |= ATA_FLAG_SLAVE_POSS;
      ap->ioaddr.cmd_addr = io_addr;
      ap->ioaddr.altstatus_addr = ctl_addr;
      ap->ioaddr.ctl_addr = ctl_addr;
      ata_std_ports(&ap->ioaddr);

      ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base);

      /* activate */
      ret = ata_host_activate(host, pdev->irq.AssignedIRQ, ata_interrupt,
                        IRQF_SHARED, &pcmcia_sht);
      if (ret)
            goto failed;

      info->ndev = 1;
      kfree(stk);
      return 0;

cs_failed:
      cs_error(pdev, last_fn, last_ret);
failed:
      kfree(stk);
      info->ndev = 0;
      pcmcia_disable_device(pdev);
out1:
      kfree(info);
      return ret;
}

/**
 *    pcmcia_remove_one -     unplug an pcmcia interface
 *    @pdev: pcmcia device
 *
 *    A PCMCIA ATA device has been unplugged. Perform the needed
 *    cleanup. Also called on module unload for any active devices.
 */

static void pcmcia_remove_one(struct pcmcia_device *pdev)
{
      struct ata_pcmcia_info *info = pdev->priv;
      struct device *dev = &pdev->dev;

      if (info != NULL) {
            /* If we have attached the device to the ATA layer, detach it */
            if (info->ndev) {
                  struct ata_host *host = dev_get_drvdata(dev);
                  ata_host_detach(host);
            }
            info->ndev = 0;
            pdev->priv = NULL;
      }
      pcmcia_disable_device(pdev);
      kfree(info);
}

static struct pcmcia_device_id pcmcia_devices[] = {
      PCMCIA_DEVICE_FUNC_ID(4),
      PCMCIA_DEVICE_MANF_CARD(0x0000, 0x0000),  /* Corsair */
      PCMCIA_DEVICE_MANF_CARD(0x0007, 0x0000),  /* Hitachi */
      PCMCIA_DEVICE_MANF_CARD(0x000a, 0x0000),  /* I-O Data CFA */
      PCMCIA_DEVICE_MANF_CARD(0x001c, 0x0001),  /* Mitsubishi CFA */
      PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704),
      PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904),
      PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401),  /* SanDisk CFA */
      PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000),  /* Toshiba */
      PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d),
      PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000),  /* Samsung */
      PCMCIA_DEVICE_MANF_CARD(0x0319, 0x0000),  /* Hitachi */
      PCMCIA_DEVICE_MANF_CARD(0x2080, 0x0001),
      PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0100),  /* Viking CFA */
      PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0200),  /* Lexar, Viking CFA */
      PCMCIA_DEVICE_PROD_ID123("Caravelle", "PSC-IDE ", "PSC000", 0x8c36137c, 0xd0693ab8, 0x2768a9f0),
      PCMCIA_DEVICE_PROD_ID123("CDROM", "IDE", "MCD-601p", 0x1b9179ca, 0xede88951, 0x0d902f74),
      PCMCIA_DEVICE_PROD_ID123("PCMCIA", "IDE CARD", "F1", 0x281f1c5d, 0x1907960c, 0xf7fde8b9),
      PCMCIA_DEVICE_PROD_ID12("ARGOSY", "CD-ROM", 0x78f308dc, 0x66536591),
      PCMCIA_DEVICE_PROD_ID12("ARGOSY", "PnPIDE", 0x78f308dc, 0x0c694728),
      PCMCIA_DEVICE_PROD_ID12("CNF CD-M", "CD-ROM", 0x7d93b852, 0x66536591),
      PCMCIA_DEVICE_PROD_ID12("Creative Technology Ltd.", "PCMCIA CD-ROM Interface Card", 0xff8c8a45, 0xfe8020c4),
      PCMCIA_DEVICE_PROD_ID12("Digital Equipment Corporation.", "Digital Mobile Media CD-ROM", 0x17692a66, 0xef1dcbde),
      PCMCIA_DEVICE_PROD_ID12("EXP", "CD+GAME", 0x6f58c983, 0x63c13aaf),
      PCMCIA_DEVICE_PROD_ID12("EXP   ", "CD-ROM", 0x0a5c52fd, 0x66536591),
      PCMCIA_DEVICE_PROD_ID12("EXP   ", "PnPIDE", 0x0a5c52fd, 0x0c694728),
      PCMCIA_DEVICE_PROD_ID12("FREECOM", "PCCARD-IDE", 0x5714cbf7, 0x48e0ab8e),
      PCMCIA_DEVICE_PROD_ID12("Hyperstone", "Model1", 0x3d5b9ef5, 0xca6ab420),
      PCMCIA_DEVICE_PROD_ID12("HITACHI", "FLASH", 0xf4f43949, 0x9eb86aae),
      PCMCIA_DEVICE_PROD_ID12("HITACHI", "microdrive", 0xf4f43949, 0xa6d76178),
      PCMCIA_DEVICE_PROD_ID12("IBM", "microdrive", 0xb569a6e5, 0xa6d76178),
      PCMCIA_DEVICE_PROD_ID12("IBM", "IBM17JSSFP20", 0xb569a6e5, 0xf2508753),
      PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF8GB", 0x2e6d1829, 0xacbe682e),
      PCMCIA_DEVICE_PROD_ID12("IO DATA", "CBIDE2      ", 0x547e66dc, 0x8671043b),
      PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDE", 0x547e66dc, 0x5c5ab149),
      PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDEII", 0x547e66dc, 0xb3662674),
      PCMCIA_DEVICE_PROD_ID12("LOOKMEET", "CBIDE2      ", 0xe37be2b5, 0x8671043b),
      PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF500", 0x7ed2ad87, 0x7a13045c),
      PCMCIA_DEVICE_PROD_ID2("NinjaATA-", 0xebe0bd79),
      PCMCIA_DEVICE_PROD_ID12("PCMCIA", "CD-ROM", 0x281f1c5d, 0x66536591),
      PCMCIA_DEVICE_PROD_ID12("PCMCIA", "PnPIDE", 0x281f1c5d, 0x0c694728),
      PCMCIA_DEVICE_PROD_ID12("SHUTTLE TECHNOLOGY LTD.", "PCCARD-IDE/ATAPI Adapter", 0x4a3f0ba0, 0x322560e1),
      PCMCIA_DEVICE_PROD_ID12("SEAGATE", "ST1", 0x87c1b330, 0xe1f30883),
      PCMCIA_DEVICE_PROD_ID12("SAMSUNG", "04/05/06", 0x43d74cb4, 0x6a22777d),
      PCMCIA_DEVICE_PROD_ID12("SMI VENDOR", "SMI PRODUCT", 0x30896c92, 0x703cc5f6),
      PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "MK2001MPL", 0xb4585a1a, 0x3489e003),
      PCMCIA_DEVICE_PROD_ID1("TRANSCEND    512M   ", 0xd0909443),
      PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF80", 0x709b1bf1, 0x2a54d4b1),
      PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS2GCF120", 0x709b1bf1, 0x969aa4f2),
      PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF120", 0x709b1bf1, 0xf54a91c8),
      PCMCIA_DEVICE_PROD_ID12("WIT", "IDE16", 0x244e5994, 0x3e232852),
      PCMCIA_DEVICE_PROD_ID12("WEIDA", "TWTTI", 0xcc7cf69c, 0x212bb918),
      PCMCIA_DEVICE_PROD_ID1("STI Flash", 0xe4a13209),
      PCMCIA_DEVICE_PROD_ID12("STI", "Flash 5.0", 0xbf2df18d, 0x8cb57a0e),
      PCMCIA_MFC_DEVICE_PROD_ID12(1, "SanDisk", "ConnectPlus", 0x7a954bd9, 0x74be00c6),
      PCMCIA_DEVICE_NULL,
};

MODULE_DEVICE_TABLE(pcmcia, pcmcia_devices);

static struct pcmcia_driver pcmcia_driver = {
      .owner            = THIS_MODULE,
      .drv = {
            .name       = DRV_NAME,
      },
      .id_table   = pcmcia_devices,
      .probe            = pcmcia_init_one,
      .remove           = pcmcia_remove_one,
};

static int __init pcmcia_init(void)
{
      return pcmcia_register_driver(&pcmcia_driver);
}

static void __exit pcmcia_exit(void)
{
      pcmcia_unregister_driver(&pcmcia_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for PCMCIA ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

module_init(pcmcia_init);
module_exit(pcmcia_exit);

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