*
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/libata.h>
ata_altstatus(ap); /* dummy read */
}
+/**
+ * ata_bmdma_freeze - Freeze BMDMA controller port
+ * @ap: port to freeze
+ *
+ * Freeze BMDMA controller port.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+void ata_bmdma_freeze(struct ata_port *ap)
+{
+ struct ata_ioports *ioaddr = &ap->ioaddr;
+
+ ap->ctl |= ATA_NIEN;
+ ap->last_ctl = ap->ctl;
+
+ if (ap->flags & ATA_FLAG_MMIO)
+ writeb(ap->ctl, (void __iomem *)ioaddr->ctl_addr);
+ else
+ outb(ap->ctl, ioaddr->ctl_addr);
+}
+
+/**
+ * ata_bmdma_thaw - Thaw BMDMA controller port
+ * @ap: port to thaw
+ *
+ * Thaw BMDMA controller port.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+void ata_bmdma_thaw(struct ata_port *ap)
+{
+ /* clear & re-enable interrupts */
+ ata_chk_status(ap);
+ ap->ops->irq_clear(ap);
+ if (ap->ioaddr.ctl_addr) /* FIXME: hack. create a hook instead */
+ ata_irq_on(ap);
+}
+
+/**
+ * ata_bmdma_drive_eh - Perform EH with given methods for BMDMA controller
+ * @ap: port to handle error for
+ * @prereset: prereset method (can be NULL)
+ * @softreset: softreset method (can be NULL)
+ * @hardreset: hardreset method (can be NULL)
+ * @postreset: postreset method (can be NULL)
+ *
+ * Handle error for ATA BMDMA controller. It can handle both
+ * PATA and SATA controllers. Many controllers should be able to
+ * use this EH as-is or with some added handling before and
+ * after.
+ *
+ * This function is intended to be used for constructing
+ * ->error_handler callback by low level drivers.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ */
+void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
+ ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
+ ata_postreset_fn_t postreset)
+{
+ struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_queued_cmd *qc;
+ unsigned long flags;
+ int thaw = 0;
+
+ qc = __ata_qc_from_tag(ap, ap->active_tag);
+ if (qc && !(qc->flags & ATA_QCFLAG_FAILED))
+ qc = NULL;
+
+ /* reset PIO HSM and stop DMA engine */
+ spin_lock_irqsave(ap->lock, flags);
+
+ ap->hsm_task_state = HSM_ST_IDLE;
+
+ if (qc && (qc->tf.protocol == ATA_PROT_DMA ||
+ qc->tf.protocol == ATA_PROT_ATAPI_DMA)) {
+ u8 host_stat;
+
+ host_stat = ata_bmdma_status(ap);
+
+ ata_ehi_push_desc(&ehc->i, "BMDMA stat 0x%x", host_stat);
+
+ /* BMDMA controllers indicate host bus error by
+ * setting DMA_ERR bit and timing out. As it wasn't
+ * really a timeout event, adjust error mask and
+ * cancel frozen state.
+ */
+ if (qc->err_mask == AC_ERR_TIMEOUT && host_stat & ATA_DMA_ERR) {
+ qc->err_mask = AC_ERR_HOST_BUS;
+ thaw = 1;
+ }
+
+ ap->ops->bmdma_stop(qc);
+ }
+
+ ata_altstatus(ap);
+ ata_chk_status(ap);
+ ap->ops->irq_clear(ap);
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ if (thaw)
+ ata_eh_thaw_port(ap);
+
+ /* PIO and DMA engines have been stopped, perform recovery */
+ ata_do_eh(ap, prereset, softreset, hardreset, postreset);
+}
+
+/**
+ * ata_bmdma_error_handler - Stock error handler for BMDMA controller
+ * @ap: port to handle error for
+ *
+ * Stock error handler for BMDMA controller.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ */
+void ata_bmdma_error_handler(struct ata_port *ap)
+{
+ ata_reset_fn_t hardreset;
+
+ hardreset = NULL;
+ if (sata_scr_valid(ap))
+ hardreset = sata_std_hardreset;
+
+ ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, hardreset,
+ ata_std_postreset);
+}
+
+/**
+ * ata_bmdma_post_internal_cmd - Stock post_internal_cmd for
+ * BMDMA controller
+ * @qc: internal command to clean up
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ */
+void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)
+{
+ ata_bmdma_stop(qc);
+}
+
#ifdef CONFIG_PCI
static struct ata_probe_ent *
ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
return NULL;
probe_ent->irq = pdev->irq;
- probe_ent->irq_flags = SA_SHIRQ;
+ probe_ent->irq_flags = IRQF_SHARED;
probe_ent->private_data = port[0]->private_data;
if (ports & ATA_PORT_PRIMARY) {
/* FIXME: check ata_device_add return */
if (legacy_mode) {
- if (legacy_mode & (1 << 0))
+ struct device *dev = &pdev->dev;
+ struct ata_host_set *host_set = NULL;
+
+ if (legacy_mode & (1 << 0)) {
ata_device_add(probe_ent);
- if (legacy_mode & (1 << 1))
+ host_set = dev_get_drvdata(dev);
+ }
+
+ if (legacy_mode & (1 << 1)) {
ata_device_add(probe_ent2);
+ if (host_set) {
+ host_set->next = dev_get_drvdata(dev);
+ dev_set_drvdata(dev, host_set);
+ }
+ }
} else
ata_device_add(probe_ent);
git://git.onelab.eu / linux-2.6.git / blobdiff