powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function

[cascardo/linux.git] / drivers / ata / pata_via.c

diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index b08e6e0..45657ca 100644 (file)
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -62,7 +62,7 @@
 #include <linux/dmi.h>
 
 #define DRV_NAME "pata_via"
-#define DRV_VERSION "0.3.3"
+#define DRV_VERSION "0.3.4"
 
 /*
  *     The following comes directly from Vojtech Pavlik's ide/pci/via82cxxx
@@ -136,6 +136,9 @@ static const struct via_isa_bridge {
        { NULL }
 };
 
+struct via_port {
+       u8 cached_device;
+};
 
 /*
  *     Cable special cases
@@ -346,14 +349,70 @@ static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev)
  */
 static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 {
-       struct ata_taskfile tmp_tf;
+       struct ata_ioports *ioaddr = &ap->ioaddr;
+       struct via_port *vp = ap->private_data;
+       unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
+       int newctl = 0;
+
+       if (tf->ctl != ap->last_ctl) {
+               iowrite8(tf->ctl, ioaddr->ctl_addr);
+               ap->last_ctl = tf->ctl;
+               ata_wait_idle(ap);
+               newctl = 1;
+       }
+
+       if (tf->flags & ATA_TFLAG_DEVICE) {
+               iowrite8(tf->device, ioaddr->device_addr);
+               vp->cached_device = tf->device;
+       } else if (newctl)
+               iowrite8(vp->cached_device, ioaddr->device_addr);
+
+       if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
+               WARN_ON_ONCE(!ioaddr->ctl_addr);
+               iowrite8(tf->hob_feature, ioaddr->feature_addr);
+               iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
+               iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
+               iowrite8(tf->hob_lbam, ioaddr->lbam_addr);
+               iowrite8(tf->hob_lbah, ioaddr->lbah_addr);
+               VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
+                       tf->hob_feature,
+                       tf->hob_nsect,
+                       tf->hob_lbal,
+                       tf->hob_lbam,
+                       tf->hob_lbah);
+       }
 
-       if (ap->ctl != ap->last_ctl && !(tf->flags & ATA_TFLAG_DEVICE)) {
-               tmp_tf = *tf;
-               tmp_tf.flags |= ATA_TFLAG_DEVICE;
-               tf = &tmp_tf;
+       if (is_addr) {
+               iowrite8(tf->feature, ioaddr->feature_addr);
+               iowrite8(tf->nsect, ioaddr->nsect_addr);
+               iowrite8(tf->lbal, ioaddr->lbal_addr);
+               iowrite8(tf->lbam, ioaddr->lbam_addr);
+               iowrite8(tf->lbah, ioaddr->lbah_addr);
+               VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
+                       tf->feature,
+                       tf->nsect,
+                       tf->lbal,
+                       tf->lbam,
+                       tf->lbah);
        }
-       ata_sff_tf_load(ap, tf);
+
+       ata_wait_idle(ap);
+}
+
+static int via_port_start(struct ata_port *ap)
+{
+       struct via_port *vp;
+       struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+
+       int ret = ata_sff_port_start(ap);
+       if (ret < 0)
+               return ret;
+
+       vp = devm_kzalloc(&pdev->dev, sizeof(struct via_port), GFP_KERNEL);
+       if (vp == NULL)
+               return -ENOMEM;
+       ap->private_data = vp;
+       return 0;
 }
 
 static struct scsi_host_template via_sht = {
@@ -367,6 +426,7 @@ static struct ata_port_operations via_port_ops = {
        .set_dmamode    = via_set_dmamode,
        .prereset       = via_pre_reset,
        .sff_tf_load    = via_tf_load,
+       .port_start     = via_port_start,
 };
 
 static struct ata_port_operations via_port_ops_noirq = {