#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
-#include <asm/semaphore.h>
#include <asm/byteorder.h>
#include <linux/cdrom.h>
.qc_defer = ata_std_qc_defer,
.hardreset = sata_std_hardreset,
- .sff_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,
};
static unsigned int ata_dev_init_params(struct ata_device *dev,
return 0;
}
-/**
- * ata_noop_dev_select - Select device 0/1 on ATA bus
- * @ap: ATA channel to manipulate
- * @device: ATA device (numbered from zero) to select
- *
- * This function performs no actual function.
- *
- * May be used as the dev_select() entry in ata_port_operations.
- *
- * LOCKING:
- * caller.
- */
-void ata_noop_dev_select(struct ata_port *ap, unsigned int device)
-{
-}
-
/**
* ata_dump_id - IDENTIFY DEVICE info debugging output
* @id: IDENTIFY DEVICE page to dump
* changed notifications and ATAPI ANs.
*/
if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
- (!ap->nr_pmp_links ||
+ (!sata_pmp_attached(ap) ||
sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
unsigned int err_mask;
if (rc)
return rc;
- /* Old CFA may refuse this command, which is just fine */
- if (dev->xfer_shift == ATA_SHIFT_PIO && ata_id_is_cfa(dev->id))
- ign_dev_err = 1;
-
- /* Some very old devices and some bad newer ones fail any kind of
- SET_XFERMODE request but support PIO0-2 timings and no IORDY */
- if (dev->xfer_shift == ATA_SHIFT_PIO && !ata_id_has_iordy(dev->id) &&
- dev->pio_mode <= XFER_PIO_2)
- ign_dev_err = 1;
-
+ if (dev->xfer_shift == ATA_SHIFT_PIO) {
+ /* Old CFA may refuse this command, which is just fine */
+ if (ata_id_is_cfa(dev->id))
+ ign_dev_err = 1;
+ /* Catch several broken garbage emulations plus some pre
+ ATA devices */
+ if (ata_id_major_version(dev->id) == 0 &&
+ dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ /* Some very old devices and some bad newer ones fail
+ any kind of SET_XFERMODE request but support PIO0-2
+ timings and no IORDY */
+ if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ }
/* Early MWDMA devices do DMA but don't allow DMA mode setting.
Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
- u32 scontrol;
+ u32 scontrol, serror;
int rc;
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
*/
msleep(200);
- return sata_link_debounce(link, params, deadline);
+ if ((rc = sata_link_debounce(link, params, deadline)))
+ return rc;
+
+ /* Clear SError. PMP and some host PHYs require this to
+ * operate and clearing should be done before checking PHY
+ * online status to avoid race condition (hotplugging between
+ * link resume and status check).
+ */
+ if (!(rc = sata_scr_read(link, SCR_ERROR, &serror)))
+ rc = sata_scr_write(link, SCR_ERROR, serror);
+ if (rc == 0 || rc == -EINVAL) {
+ unsigned long flags;
+
+ spin_lock_irqsave(link->ap->lock, flags);
+ link->eh_info.serror = 0;
+ spin_unlock_irqrestore(link->ap->lock, flags);
+ rc = 0;
+ }
+ return rc;
}
/**
"link for reset (errno=%d)\n", rc);
}
+ /* no point in trying softreset on offline link */
+ if (ata_link_offline(link))
+ ehc->i.action &= ~ATA_EH_SOFTRESET;
+
return 0;
}
if (online)
*online = true;
- if ((link->ap->flags & ATA_FLAG_PMP) && ata_is_host_link(link)) {
+ if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
/* If PMP is supported, we have to do follow-up SRST.
* Some PMPs don't send D2H Reg FIS after hardreset if
* the first port is empty. Wait only for
/* do hardreset */
rc = sata_link_hardreset(link, timing, deadline, &online, NULL);
- *class = ATA_DEV_NONE;
return online ? -EAGAIN : rc;
}
*/
void ata_std_postreset(struct ata_link *link, unsigned int *classes)
{
- u32 serror;
-
DPRINTK("ENTER\n");
/* print link status */
sata_print_link_status(link);
- /* clear SError */
- if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
- sata_scr_write(link, SCR_ERROR, serror);
- link->eh_info.serror = 0;
-
DPRINTK("EXIT\n");
}
/* If the controller thinks we are 80 wire, we are */
if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
return 0;
+ /* If the system is known to be 40 wire short cable (eg laptop),
+ then we allow 80 wire modes even if the drive isn't sure */
+ if (ap->cbl == ATA_CBL_PATA40_SHORT)
+ return 0;
/* If the controller doesn't know we scan
- Note: We look for all 40 wire detects at this point.
struct ata_port *ap = qc->ap;
qc->result_tf.flags = qc->tf.flags;
- ap->ops->sff_tf_read(ap, &qc->result_tf);
+ ap->ops->qc_fill_rtf(qc);
}
static void ata_verify_xfer(struct ata_queued_cmd *qc)
* ata_qc_complete_multiple - Complete multiple qcs successfully
* @ap: port in question
* @qc_active: new qc_active mask
- * @finish_qc: LLDD callback invoked before completing a qc
*
* Complete in-flight commands. This functions is meant to be
* called from low-level driver's interrupt routine to complete
* RETURNS:
* Number of completed commands on success, -errno otherwise.
*/
-int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
- void (*finish_qc)(struct ata_queued_cmd *))
+int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active)
{
int nr_done = 0;
u32 done_mask;
continue;
if ((qc = ata_qc_from_tag(ap, i))) {
- if (finish_qc)
- finish_qc(qc);
ata_qc_complete(qc);
nr_done++;
}
ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN;
#endif
+#ifdef CONFIG_ATA_SFF
INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#endif
INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
INIT_LIST_HEAD(&ap->eh_done_q);
/*
* Dummy port_ops
*/
-static void ata_dummy_noret(struct ata_port *ap) { }
-static int ata_dummy_ret0(struct ata_port *ap) { return 0; }
-static void ata_dummy_qc_noret(struct ata_queued_cmd *qc) { }
-
-static u8 ata_dummy_check_status(struct ata_port *ap)
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
{
- return ATA_DRDY;
+ return AC_ERR_SYSTEM;
}
-static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+static void ata_dummy_error_handler(struct ata_port *ap)
{
- return AC_ERR_SYSTEM;
+ /* truly dummy */
}
struct ata_port_operations ata_dummy_port_ops = {
- .sff_check_status = ata_dummy_check_status,
- .sff_check_altstatus = ata_dummy_check_status,
- .sff_dev_select = ata_noop_dev_select,
.qc_prep = ata_noop_qc_prep,
.qc_issue = ata_dummy_qc_issue,
- .freeze = ata_dummy_noret,
- .thaw = ata_dummy_noret,
- .error_handler = ata_dummy_noret,
- .post_internal_cmd = ata_dummy_qc_noret,
- .sff_irq_clear = ata_dummy_noret,
- .port_start = ata_dummy_ret0,
- .port_stop = ata_dummy_noret,
+ .error_handler = ata_dummy_error_handler,
};
const struct ata_port_info ata_dummy_port_info = {
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_dummy_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_info);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_sg_init);
EXPORT_SYMBOL_GPL(ata_qc_complete);
EXPORT_SYMBOL_GPL(ata_qc_complete_multiple);
-EXPORT_SYMBOL_GPL(ata_noop_dev_select);
EXPORT_SYMBOL_GPL(sata_print_link_status);
EXPORT_SYMBOL_GPL(atapi_cmd_type);
EXPORT_SYMBOL_GPL(ata_tf_to_fis);
#endif /* CONFIG_PM */
#endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);
-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_error_handler);
-
EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
projects / linux-2.6-omap-h63xx.git / blobdiff