const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 };
const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
+const struct ata_port_operations ata_base_port_ops = {
+ .irq_clear = ata_noop_irq_clear,
+ .prereset = ata_std_prereset,
+ .hardreset = sata_std_hardreset,
+ .postreset = ata_std_postreset,
+ .error_handler = ata_std_error_handler,
+};
+
+const struct ata_port_operations sata_port_ops = {
+ .inherits = &ata_base_port_ops,
+
+ .qc_defer = ata_std_qc_defer,
+ .dev_select = ata_noop_dev_select,
+};
+
+const struct ata_port_operations sata_pmp_port_ops = {
+ .inherits = &sata_port_ops,
+
+ .pmp_prereset = sata_pmp_std_prereset,
+ .pmp_hardreset = sata_pmp_std_hardreset,
+ .pmp_postreset = sata_pmp_std_postreset,
+ .error_handler = sata_pmp_error_handler,
+};
+
+const struct ata_port_operations ata_sff_port_ops = {
+ .inherits = &ata_base_port_ops,
+
+ .qc_prep = ata_qc_prep,
+ .qc_issue = ata_qc_issue_prot,
+
+ .freeze = ata_bmdma_freeze,
+ .thaw = ata_bmdma_thaw,
+ .softreset = ata_std_softreset,
+ .error_handler = ata_bmdma_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
+
+ .dev_select = ata_std_dev_select,
+ .check_status = ata_check_status,
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .exec_command = ata_exec_command,
+ .data_xfer = ata_data_xfer,
+ .irq_on = ata_irq_on,
+
+ .port_start = ata_sff_port_start,
+};
+
+const struct ata_port_operations ata_bmdma_port_ops = {
+ .inherits = &ata_sff_port_ops,
+
+ .mode_filter = ata_pci_default_filter,
+
+ .bmdma_setup = ata_bmdma_setup,
+ .bmdma_start = ata_bmdma_start,
+ .bmdma_stop = ata_bmdma_stop,
+ .bmdma_status = ata_bmdma_status,
+ .irq_clear = ata_bmdma_irq_clear,
+};
+
static unsigned int ata_dev_init_params(struct ata_device *dev,
u16 heads, u16 sectors);
static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
if (ata_msg_ctl(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__);
- ata_dev_select(ap, dev->devno, 1, 1); /* select device 0/1 */
retry:
ata_tf_init(dev, &tf);
if (!host->ops && (pi->port_ops != &ata_dummy_port_ops))
host->ops = pi->port_ops;
- if (!host->private_data && pi->private_data)
- host->private_data = pi->private_data;
}
return host;
host->ops->host_stop(host);
}
+/**
+ * ata_finalize_port_ops - finalize ata_port_operations
+ * @ops: ata_port_operations to finalize
+ *
+ * An ata_port_operations can inherit from another ops and that
+ * ops can again inherit from another. This can go on as many
+ * times as necessary as long as there is no loop in the
+ * inheritance chain.
+ *
+ * Ops tables are finalized when the host is started. NULL or
+ * unspecified entries are inherited from the closet ancestor
+ * which has the method and the entry is populated with it.
+ * After finalization, the ops table directly points to all the
+ * methods and ->inherits is no longer necessary and cleared.
+ *
+ * Using ATA_OP_NULL, inheriting ops can force a method to NULL.
+ *
+ * LOCKING:
+ * None.
+ */
+static void ata_finalize_port_ops(struct ata_port_operations *ops)
+{
+ static spinlock_t lock = SPIN_LOCK_UNLOCKED;
+ const struct ata_port_operations *cur;
+ void **begin = (void **)ops;
+ void **end = (void **)&ops->inherits;
+ void **pp;
+
+ if (!ops || !ops->inherits)
+ return;
+
+ spin_lock(&lock);
+
+ for (cur = ops->inherits; cur; cur = cur->inherits) {
+ void **inherit = (void **)cur;
+
+ for (pp = begin; pp < end; pp++, inherit++)
+ if (!*pp)
+ *pp = *inherit;
+ }
+
+ for (pp = begin; pp < end; pp++)
+ if (IS_ERR(*pp))
+ *pp = NULL;
+
+ ops->inherits = NULL;
+
+ spin_unlock(&lock);
+}
+
/**
* ata_host_start - start and freeze ports of an ATA host
* @host: ATA host to start ports for
if (host->flags & ATA_HOST_STARTED)
return 0;
+ ata_finalize_port_ops(host->ops);
+
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
+ ata_finalize_port_ops(ap->ops);
+
if (!host->ops && !ata_port_is_dummy(ap))
host->ops = ap->ops;
*/
/* KILLME - the only user left is ipr */
void ata_host_init(struct ata_host *host, struct device *dev,
- unsigned long flags, const struct ata_port_operations *ops)
+ unsigned long flags, struct ata_port_operations *ops)
{
spin_lock_init(&host->lock);
host->dev = dev;
return AC_ERR_SYSTEM;
}
-const struct ata_port_operations ata_dummy_port_ops = {
+struct ata_port_operations ata_dummy_port_ops = {
.check_status = ata_dummy_check_status,
.check_altstatus = ata_dummy_check_status,
.dev_select = ata_noop_dev_select,
EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
EXPORT_SYMBOL_GPL(sata_deb_timing_long);
+EXPORT_SYMBOL_GPL(ata_base_port_ops);
+EXPORT_SYMBOL_GPL(sata_port_ops);
+EXPORT_SYMBOL_GPL(sata_pmp_port_ops);
+EXPORT_SYMBOL_GPL(ata_sff_port_ops);
+EXPORT_SYMBOL_GPL(ata_bmdma_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_info);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_bmdma_setup);
EXPORT_SYMBOL_GPL(ata_bmdma_start);
EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear);
+EXPORT_SYMBOL_GPL(ata_noop_irq_clear);
EXPORT_SYMBOL_GPL(ata_bmdma_status);
EXPORT_SYMBOL_GPL(ata_bmdma_stop);
EXPORT_SYMBOL_GPL(ata_bmdma_freeze);
EXPORT_SYMBOL_GPL(ata_bmdma_thaw);
-EXPORT_SYMBOL_GPL(ata_bmdma_drive_eh);
EXPORT_SYMBOL_GPL(ata_bmdma_error_handler);
EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
EXPORT_SYMBOL_GPL(ata_port_probe);
EXPORT_SYMBOL_GPL(sata_pmp_std_prereset);
EXPORT_SYMBOL_GPL(sata_pmp_std_hardreset);
EXPORT_SYMBOL_GPL(sata_pmp_std_postreset);
-EXPORT_SYMBOL_GPL(sata_pmp_do_eh);
+EXPORT_SYMBOL_GPL(sata_pmp_error_handler);
EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
EXPORT_SYMBOL_GPL(ata_do_eh);
+EXPORT_SYMBOL_GPL(ata_std_error_handler);
EXPORT_SYMBOL_GPL(ata_irq_on);
EXPORT_SYMBOL_GPL(ata_dev_try_classify);
projects / deliverable / linux.git / blobdiff