pata_pcmcia: Add support for dumb 8bit IDE emulations

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 70 insertions, 1 deletions

diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c
index fd36099428a4..bbd4d70b92de 100644
--- a/drivers/ata/pata_pcmcia.c
+++ b/drivers/ata/pata_pcmcia.c
@@ -86,6 +86,44 @@ static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_d
         return ata_do_set_mode(link, r_failed_dev);
 }
 
+/**
+ *      pcmcia_set_mode_8bit    -       PCMCIA specific mode setup
+ *      @link: link
+ *      @r_failed_dev: Return pointer for failed device
+ *
+ *      For the simple emulated 8bit stuff the less we do the better.
+ */
+
+static int pcmcia_set_mode_8bit(struct ata_link *link,
+                                struct ata_device **r_failed_dev)
+{
+        return 0;
+}
+
+/**
+ *      ata_data_xfer_8bit       -      Transfer data by 8bit PIO
+ *      @adev: device to target
+ *      @buf: data buffer
+ *      @buflen: buffer length
+ *      @write_data: read/write
+ *
+ *      Transfer data from/to the device data register by 8 bit PIO.
+ *
+ *      LOCKING:
+ *      Inherited from caller.
+ */
+
+static void ata_data_xfer_8bit(struct ata_device *adev, unsigned char *buf,
+                   unsigned int buflen, int write_data)
+{
+        struct ata_port *ap = adev->link->ap;
+        if (write_data)
+                iowrite8_rep(ap->ioaddr.data_addr, buf, buflen);
+        else
+                ioread8_rep(ap->ioaddr.data_addr, buf, buflen);
+}
+
+
 static struct scsi_host_template pcmcia_sht = {
         .module                 = THIS_MODULE,
         .name                   = DRV_NAME,
@@ -129,12 +167,38 @@ static struct ata_port_operations pcmcia_port_ops = {
         .port_start     = ata_sff_port_start,
 };
 
+static struct ata_port_operations pcmcia_8bit_port_ops = {
+        .set_mode       = pcmcia_set_mode_8bit,
+        .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_8bit,
+
+        .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
+ *      @ops: operations for this device
  *
  *      Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
  *      shared IRQ.
@@ -157,6 +221,8 @@ static int pcmcia_init_one(struct pcmcia_device *pdev)
         unsigned long io_base, ctl_base;
         void __iomem *io_addr, *ctl_addr;
 
+        struct ata_port_operations *ops = &pcmcia_port_ops;
+
         info = kzalloc(sizeof(*info), GFP_KERNEL);
         if (info == NULL)
                 return -ENOMEM;
@@ -284,6 +350,8 @@ next_entry:
         if (pdev->io.NumPorts1 >= 0x20)
                 printk(KERN_WARNING DRV_NAME ": second channel not yet supported.\n");
 
+        if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620)
+                ops = &pcmcia_8bit_port_ops;
         /*
          *      Having done the PCMCIA plumbing the ATA side is relatively
          *      sane.
@@ -294,7 +362,7 @@ next_entry:
                 goto failed;
         ap = host->ports[0];
 
-        ap->ops = &pcmcia_port_ops;
+        ap->ops = ops;
         ap->pio_mask = 1;               /* ISA so PIO 0 cycles */
         ap->flags |= ATA_FLAG_SLAVE_POSS;
         ap->ioaddr.cmd_addr = io_addr;
@@ -360,6 +428,7 @@ static struct pcmcia_device_id pcmcia_devices[] = {
         PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704),
         PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904),
         PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401),        /* SanDisk CFA */
+        PCMCIA_DEVICE_MANF_CARD(0x0097, 0x1620),        /* TI emulated */
         PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000),        /* Toshiba */
         PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d),
         PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000),        /* Samsung */