-/**
- * sata_pmp_std_prereset - prepare PMP link for reset
- * @link: link to be reset
- * @deadline: deadline jiffies for the operation
- *
- * @link is about to be reset. Initialize it.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline)
-{
- struct ata_eh_context *ehc = &link->eh_context;
- const unsigned long *timing = sata_ehc_deb_timing(ehc);
- int rc;
-
- /* force HRST? */
- if (link->flags & ATA_LFLAG_NO_SRST)
- ehc->i.action |= ATA_EH_HARDRESET;
-
- /* handle link resume */
- if ((ehc->i.flags & ATA_EHI_RESUME_LINK) &&
- (link->flags & ATA_LFLAG_HRST_TO_RESUME))
- ehc->i.action |= ATA_EH_HARDRESET;
-
- /* if we're about to do hardreset, nothing more to do */
- if (ehc->i.action & ATA_EH_HARDRESET)
- return 0;
-
- /* resume link */
- rc = sata_link_resume(link, timing, deadline);
- if (rc) {
- /* phy resume failed */
- ata_link_printk(link, KERN_WARNING, "failed to resume link "
- "for reset (errno=%d)\n", rc);
- return rc;
- }
-
- /* clear SError bits including .X which blocks the port when set */
- rc = sata_scr_write(link, SCR_ERROR, 0xffffffff);
- if (rc) {
- ata_link_printk(link, KERN_ERR,
- "failed to clear SError (errno=%d)\n", rc);
- return rc;
- }
-
- return 0;
-}
-
-/**
- * sata_pmp_std_hardreset - standard hardreset method for PMP link
- * @link: link to be reset
- * @class: resulting class of attached device
- * @deadline: deadline jiffies for the operation
- *
- * Hardreset PMP port @link. Note that this function doesn't
- * wait for BSY clearance. There simply isn't a generic way to
- * wait the event. Instead, this function return -EAGAIN thus
- * telling libata-EH to followup with softreset.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline)
-{
- const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
- u32 tmp;
- int rc;
-
- DPRINTK("ENTER\n");
-
- /* do hardreset */
- rc = sata_link_hardreset(link, timing, deadline);
- if (rc) {
- ata_link_printk(link, KERN_ERR,
- "COMRESET failed (errno=%d)\n", rc);
- goto out;
- }
-
- /* clear SError bits including .X which blocks the port when set */
- rc = sata_scr_write(link, SCR_ERROR, 0xffffffff);
- if (rc) {
- ata_link_printk(link, KERN_ERR, "failed to clear SError "
- "during hardreset (errno=%d)\n", rc);
- goto out;
- }
-
- /* if device is present, follow up with srst to wait for !BSY */
- if (ata_link_online(link))
- rc = -EAGAIN;
- out:
- /* if SCR isn't accessible, we need to reset the PMP */
- if (rc && rc != -EAGAIN && sata_scr_read(link, SCR_STATUS, &tmp))
- rc = -ERESTART;
-
- DPRINTK("EXIT, rc=%d\n", rc);
- return rc;
-}
-
-/**
- * ata_std_postreset - standard postreset method for PMP link
- * @link: the target ata_link
- * @classes: classes of attached devices
- *
- * This function is invoked after a successful reset. Note that
- * the device might have been reset more than once using
- * different reset methods before postreset is invoked.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- */
-void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class)
-{
- u32 serror;
-
- DPRINTK("ENTER\n");
-
- /* clear SError */
- if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
- sata_scr_write(link, SCR_ERROR, serror);
-
- /* print link status */
- sata_print_link_status(link);
-
- DPRINTK("EXIT\n");
-}
-