X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fata%2Flibata-pmp.c;h=51f0ffb78cbd62af877453cd2bea3a07e999cc46;hb=159a7ff7a13f9a02c75006f40c0561a3a81aefcd;hp=671d171055a3d3bacdf3c4ea1bd3fc0dd5941f04;hpb=3af9a77af9e2b72366363864bfcd3d51465ff98a;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 671d171..51f0ffb 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -11,33 +11,49 @@
 #include <linux/libata.h>
 #include "libata.h"
 
+const struct ata_port_operations sata_pmp_port_ops = {
+	.inherits		= &sata_port_ops,
+	.pmp_prereset		= ata_std_prereset,
+	.pmp_hardreset		= sata_std_hardreset,
+	.pmp_postreset		= ata_std_postreset,
+	.error_handler		= sata_pmp_error_handler,
+};
+
 /**
  *	sata_pmp_read - read PMP register
  *	@link: link to read PMP register for
  *	@reg: register to read
  *	@r_val: resulting value
  *
- *	Wrapper around ap->ops->pmp_read to make it easier to call and
- *	nomarlize error return value.
+ *	Read PMP register.
  *
  *	LOCKING:
  *	Kernel thread context (may sleep).
  *
  *	RETURNS:
- *	0 on success, -errno on failure.
+ *	0 on success, AC_ERR_* mask on failure.
  */
-static int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
+static unsigned int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
 {
 	struct ata_port *ap = link->ap;
 	struct ata_device *pmp_dev = ap->link.device;
-	int rc;
-
-	might_sleep();
-
-	rc = ap->ops->pmp_read(pmp_dev, link->pmp, reg, r_val);
-	if (rc)
-		rc = -EIO;
-	return rc;
+	struct ata_taskfile tf;
+	unsigned int err_mask;
+
+	ata_tf_init(pmp_dev, &tf);
+	tf.command = ATA_CMD_PMP_READ;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
+	tf.feature = reg;
+	tf.device = link->pmp;
+
+	err_mask = ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
+				     SATA_PMP_RW_TIMEOUT);
+	if (err_mask)
+		return err_mask;
+
+	*r_val = tf.nsect | tf.lbal << 8 | tf.lbam << 16 | tf.lbah << 24;
+	return 0;
 }
 
 /**
@@ -46,92 +62,63 @@ static int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
  *	@reg: register to write
  *	@r_val: value to write
  *
- *	Wrapper around ap->ops->pmp_write to make it easier to call
- *	and nomarlize error return value.
+ *	Write PMP register.
  *
  *	LOCKING:
  *	Kernel thread context (may sleep).
  *
  *	RETURNS:
- *	0 on success, -errno on failure.
+ *	0 on success, AC_ERR_* mask on failure.
  */
-static int sata_pmp_write(struct ata_link *link, int reg, u32 val)
+static unsigned int sata_pmp_write(struct ata_link *link, int reg, u32 val)
 {
 	struct ata_port *ap = link->ap;
 	struct ata_device *pmp_dev = ap->link.device;
-	int rc;
-
-	might_sleep();
-
-	rc = ap->ops->pmp_write(pmp_dev, link->pmp, reg, val);
-	if (rc)
-		rc = -EIO;
-	return rc;
+	struct ata_taskfile tf;
+
+	ata_tf_init(pmp_dev, &tf);
+	tf.command = ATA_CMD_PMP_WRITE;
+	tf.protocol = ATA_PROT_NODATA;
+	tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
+	tf.feature = reg;
+	tf.device = link->pmp;
+	tf.nsect = val & 0xff;
+	tf.lbal = (val >> 8) & 0xff;
+	tf.lbam = (val >> 16) & 0xff;
+	tf.lbah = (val >> 24) & 0xff;
+
+	return ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
+				 SATA_PMP_RW_TIMEOUT);
 }
 
 /**
- *	sata_pmp_read_init_tf - initialize TF for PMP read
- *	@tf: taskfile to initialize
- *	@dev: PMP dev
- *	@pmp: port multiplier port number
- *	@reg: register to read
+ *	sata_pmp_qc_defer_cmd_switch - qc_defer for command switching PMP
+ *	@qc: ATA command in question
  *
- *	Initialize @tf for PMP read command.
+ *	A host which has command switching PMP support cannot issue
+ *	commands to multiple links simultaneously.
  *
  *	LOCKING:
- *	None.
- */
-void sata_pmp_read_init_tf(struct ata_taskfile *tf,
-			   struct ata_device *dev, int pmp, int reg)
-{
-	ata_tf_init(dev, tf);
-	tf->command = ATA_CMD_PMP_READ;
-	tf->protocol = ATA_PROT_NODATA;
-	tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
-	tf->feature = reg;
-	tf->device = pmp;
-}
-
-/**
- *	sata_pmp_read_val - extract PMP read result from TF
- *	@tf: target TF
- *
- *	Determine PMP read result from @tf.
+ *	spin_lock_irqsave(host lock)
  *
- *	LOCKING:
- *	None.
+ *	RETURNS:
+ *	ATA_DEFER_* if deferring is needed, 0 otherwise.
  */
-u32 sata_pmp_read_val(const struct ata_taskfile *tf)
+int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc)
 {
-	return tf->nsect | tf->lbal << 8 | tf->lbam << 16 | tf->lbah << 24;
-}
+	struct ata_link *link = qc->dev->link;
+	struct ata_port *ap = link->ap;
 
-/**
- *	sata_pmp_read_init_tf - initialize TF for PMP write
- *	@tf: taskfile to initialize
- *	@dev: PMP dev
- *	@pmp: port multiplier port number
- *	@reg: register to read
- *	@val: value to write
- *
- *	Initialize @tf for PMP write command.
- *
- *	LOCKING:
- *	None.
- */
-void sata_pmp_write_init_tf(struct ata_taskfile *tf,
-			    struct ata_device *dev, int pmp, int reg, u32 val)
-{
-	ata_tf_init(dev, tf);
-	tf->command = ATA_CMD_PMP_WRITE;
-	tf->protocol = ATA_PROT_NODATA;
-	tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
-	tf->feature = reg;
-	tf->device = pmp;
-	tf->nsect = val & 0xff;
-	tf->lbal = (val >> 8) & 0xff;
-	tf->lbam = (val >> 16) & 0xff;
-	tf->lbah = (val >> 24) & 0xff;
+	if (ap->excl_link == NULL || ap->excl_link == link) {
+		if (ap->nr_active_links == 0 || ata_link_active(link)) {
+			qc->flags |= ATA_QCFLAG_CLEAR_EXCL;
+			return ata_std_qc_defer(qc);
+		}
+
+		ap->excl_link = link;
+	}
+
+	return ATA_DEFER_PORT;
 }
 
 /**
@@ -151,10 +138,18 @@ void sata_pmp_write_init_tf(struct ata_taskfile *tf,
  */
 int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *r_val)
 {
+	unsigned int err_mask;
+
 	if (reg > SATA_PMP_PSCR_CONTROL)
 		return -EINVAL;
 
-	return sata_pmp_read(link, reg, r_val);
+	err_mask = sata_pmp_read(link, reg, r_val);
+	if (err_mask) {
+		ata_link_printk(link, KERN_WARNING, "failed to read SCR %d "
+				"(Emask=0x%x)\n", reg, err_mask);
+		return -EIO;
+	}
+	return 0;
 }
 
 /**
@@ -174,147 +169,21 @@ int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *r_val)
  */
 int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
 {
+	unsigned int err_mask;
+
 	if (reg > SATA_PMP_PSCR_CONTROL)
 		return -EINVAL;
 
-	return sata_pmp_write(link, reg, val);
-}
-
-/**
- *	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;
+	err_mask = sata_pmp_write(link, reg, val);
+	if (err_mask) {
+		ata_link_printk(link, KERN_WARNING, "failed to write SCR %d "
+				"(Emask=0x%x)\n", reg, err_mask);
+		return -EIO;
 	}
-
 	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");
-}
-
-/**
  *	sata_pmp_read_gscr - read GSCR block of SATA PMP
  *	@dev: PMP device
  *	@gscr: buffer to read GSCR block into
@@ -331,16 +200,17 @@ void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class)
 static int sata_pmp_read_gscr(struct ata_device *dev, u32 *gscr)
 {
 	static const int gscr_to_read[] = { 0, 1, 2, 32, 33, 64, 96 };
-	int i, rc;
+	int i;
 
 	for (i = 0; i < ARRAY_SIZE(gscr_to_read); i++) {
 		int reg = gscr_to_read[i];
+		unsigned int err_mask;
 
-		rc = sata_pmp_read(dev->link, reg, &gscr[reg]);
-		if (rc) {
-			ata_dev_printk(dev, KERN_ERR, "failed to read "
-				       "PMP GSCR[%d] (errno=%d)\n", reg, rc);
-			return rc;
+		err_mask = sata_pmp_read(dev->link, reg, &gscr[reg]);
+		if (err_mask) {
+			ata_dev_printk(dev, KERN_ERR, "failed to read PMP "
+				"GSCR[%d] (Emask=0x%x)\n", reg, err_mask);
+			return -EIO;
 		}
 	}
 
@@ -351,6 +221,8 @@ static const char *sata_pmp_spec_rev_str(const u32 *gscr)
 {
 	u32 rev = gscr[SATA_PMP_GSCR_REV];
 
+	if (rev & (1 << 3))
+		return "1.2";
 	if (rev & (1 << 2))
 		return "1.1";
 	if (rev & (1 << 1))
@@ -362,6 +234,7 @@ static int sata_pmp_configure(struct ata_device *dev, int print_info)
 {
 	struct ata_port *ap = dev->link->ap;
 	u32 *gscr = dev->gscr;
+	unsigned int err_mask = 0;
 	const char *reason;
 	int nr_ports, rc;
 
@@ -378,24 +251,14 @@ static int sata_pmp_configure(struct ata_device *dev, int print_info)
 		dev->flags |= ATA_DFLAG_AN;
 
 	/* monitor SERR_PHYRDY_CHG on fan-out ports */
-	rc = sata_pmp_write(dev->link, SATA_PMP_GSCR_ERROR_EN, SERR_PHYRDY_CHG);
-	if (rc) {
+	err_mask = sata_pmp_write(dev->link, SATA_PMP_GSCR_ERROR_EN,
+				  SERR_PHYRDY_CHG);
+	if (err_mask) {
+		rc = -EIO;
 		reason = "failed to write GSCR_ERROR_EN";
 		goto fail;
 	}
 
-	/* turn off notification till fan-out ports are reset and configured */
-	if (gscr[SATA_PMP_GSCR_FEAT_EN] & SATA_PMP_FEAT_NOTIFY) {
-		gscr[SATA_PMP_GSCR_FEAT_EN] &= ~SATA_PMP_FEAT_NOTIFY;
-
-		rc = sata_pmp_write(dev->link, SATA_PMP_GSCR_FEAT_EN,
-				    gscr[SATA_PMP_GSCR_FEAT_EN]);
-		if (rc) {
-			reason = "failed to write GSCR_FEAT_EN";
-			goto fail;
-		}
-	}
-
 	if (print_info) {
 		ata_dev_printk(dev, KERN_INFO, "Port Multiplier %s, "
 			       "0x%04x:0x%04x r%d, %d ports, feat 0x%x/0x%x\n",
@@ -417,7 +280,8 @@ static int sata_pmp_configure(struct ata_device *dev, int print_info)
 
  fail:
 	ata_dev_printk(dev, KERN_ERR,
-		       "failed to configure Port Multiplier (%s)\n", reason);
+		       "failed to configure Port Multiplier (%s, Emask=0x%x)\n",
+		       reason, err_mask);
 	return rc;
 }
 
@@ -443,9 +307,8 @@ static int sata_pmp_init_links(struct ata_port *ap, int nr_ports)
 		struct ata_eh_context *ehc = &link->eh_context;
 
 		link->flags = 0;
-		ehc->i.probe_mask |= 1;
-		ehc->i.action |= ATA_EH_SOFTRESET;
-		ehc->i.flags |= ATA_EHI_RESUME_LINK;
+		ehc->i.probe_mask |= ATA_ALL_DEVICES;
+		ehc->i.action |= ATA_EH_RESET;
 	}
 
 	return 0;
@@ -460,13 +323,13 @@ static void sata_pmp_quirks(struct ata_port *ap)
 
 	if (vendor == 0x1095 && devid == 0x3726) {
 		/* sil3726 quirks */
-		ata_port_for_each_link(link, ap) {
-			/* SError.N need a kick in the ass to get working */
-			link->flags |= ATA_LFLAG_HRST_TO_RESUME;
-
-			/* class code report is unreliable */
+		ata_for_each_link(link, ap, EDGE) {
+			/* Class code report is unreliable and SRST
+			 * times out under certain configurations.
+			 */
 			if (link->pmp < 5)
-				link->flags |= ATA_LFLAG_ASSUME_ATA;
+				link->flags |= ATA_LFLAG_NO_SRST |
+					       ATA_LFLAG_ASSUME_ATA;
 
 			/* port 5 is for SEMB device and it doesn't like SRST */
 			if (link->pmp == 5)
@@ -475,10 +338,7 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		}
 	} else if (vendor == 0x1095 && devid == 0x4723) {
 		/* sil4723 quirks */
-		ata_port_for_each_link(link, ap) {
-			/* SError.N need a kick in the ass to get working */
-			link->flags |= ATA_LFLAG_HRST_TO_RESUME;
-
+		ata_for_each_link(link, ap, EDGE) {
 			/* class code report is unreliable */
 			if (link->pmp < 2)
 				link->flags |= ATA_LFLAG_ASSUME_ATA;
@@ -490,18 +350,13 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		}
 	} else if (vendor == 0x1095 && devid == 0x4726) {
 		/* sil4726 quirks */
-		ata_port_for_each_link(link, ap) {
-			/* SError.N need a kick in the ass to get working */
-			link->flags |= ATA_LFLAG_HRST_TO_RESUME;
-
-			/* class code report is unreliable */
-			if (link->pmp < 5)
-				link->flags |= ATA_LFLAG_ASSUME_ATA;
-
-			/* The config device, which can be either at
-			 * port 0 or 5, locks up on SRST.
+		ata_for_each_link(link, ap, EDGE) {
+			/* Class code report is unreliable and SRST
+			 * times out under certain configurations.
+			 * Config device can be at port 0 or 5 and
+			 * locks up on SRST.
 			 */
-			if (link->pmp == 0 || link->pmp == 5)
+			if (link->pmp <= 5)
 				link->flags |= ATA_LFLAG_NO_SRST |
 					       ATA_LFLAG_ASSUME_ATA;
 
@@ -523,13 +378,6 @@ static void sata_pmp_quirks(struct ata_port *ap)
 		 * otherwise.  Don't try hard to recover it.
 		 */
 		ap->pmp_link[ap->nr_pmp_links - 1].flags |= ATA_LFLAG_NO_RETRY;
-	} else if (vendor == 0x11ab && devid == 0x4140) {
-		/* Marvell 88SM4140 quirks.  Fan-out ports require PHY
-		 * reset to work; other than that, it behaves very
-		 * nicely.
-		 */
-		ata_port_for_each_link(link, ap)
-			link->flags |= ATA_LFLAG_HRST_TO_RESUME;
 	}
 }
 
@@ -555,7 +403,7 @@ int sata_pmp_attach(struct ata_device *dev)
 	int rc;
 
 	/* is it hanging off the right place? */
-	if (!(ap->flags & ATA_FLAG_PMP)) {
+	if (!sata_pmp_supported(ap)) {
 		ata_dev_printk(dev, KERN_ERR,
 			       "host does not support Port Multiplier\n");
 		return -EINVAL;
@@ -604,9 +452,11 @@ int sata_pmp_attach(struct ata_device *dev)
 	if (ap->ops->pmp_attach)
 		ap->ops->pmp_attach(ap);
 
-	ata_port_for_each_link(tlink, ap)
+	ata_for_each_link(tlink, ap, EDGE)
 		sata_link_init_spd(tlink);
 
+	ata_acpi_associate_sata_port(ap);
+
 	return 0;
 
  fail:
@@ -639,13 +489,15 @@ static void sata_pmp_detach(struct ata_device *dev)
 	if (ap->ops->pmp_detach)
 		ap->ops->pmp_detach(ap);
 
-	ata_port_for_each_link(tlink, ap)
+	ata_for_each_link(tlink, ap, EDGE)
 		ata_eh_detach_dev(tlink->device);
 
 	spin_lock_irqsave(ap->lock, flags);
 	ap->nr_pmp_links = 0;
 	link->pmp = 0;
 	spin_unlock_irqrestore(ap->lock, flags);
+
+	ata_acpi_associate_sata_port(ap);
 }
 
 /**
@@ -778,13 +630,14 @@ static int sata_pmp_revalidate(struct ata_device *dev, unsigned int new_class)
  */
 static int sata_pmp_revalidate_quick(struct ata_device *dev)
 {
+	unsigned int err_mask;
 	u32 prod_id;
-	int rc;
 
-	rc = sata_pmp_read(dev->link, SATA_PMP_GSCR_PROD_ID, &prod_id);
-	if (rc) {
-		ata_dev_printk(dev, KERN_ERR, "failed to read PMP product ID\n");
-		return rc;
+	err_mask = sata_pmp_read(dev->link, SATA_PMP_GSCR_PROD_ID, &prod_id);
+	if (err_mask) {
+		ata_dev_printk(dev, KERN_ERR, "failed to read PMP product ID "
+			       "(Emask=0x%x)\n", err_mask);
+		return -EIO;
 	}
 
 	if (prod_id != dev->gscr[SATA_PMP_GSCR_PROD_ID]) {
@@ -836,13 +689,10 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
  retry:
 	ehc->classes[0] = ATA_DEV_UNKNOWN;
 
-	if (ehc->i.action & ATA_EH_RESET_MASK) {
+	if (ehc->i.action & ATA_EH_RESET) {
 		struct ata_link *tlink;
 
-		ata_eh_freeze_port(ap);
-
 		/* reset */
-		ehc->i.action = ATA_EH_HARDRESET;
 		rc = ata_eh_reset(link, 0, prereset, softreset, hardreset,
 				  postreset);
 		if (rc) {
@@ -851,11 +701,13 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
 			goto fail;
 		}
 
-		ata_eh_thaw_port(ap);
-
 		/* PMP is reset, SErrors cannot be trusted, scan all */
-		ata_port_for_each_link(tlink, ap)
-			ata_ehi_schedule_probe(&tlink->eh_context.i);
+		ata_for_each_link(tlink, ap, EDGE) {
+			struct ata_eh_context *ehc = &tlink->eh_context;
+
+			ehc->i.probe_mask |= ATA_ALL_DEVICES;
+			ehc->i.action |= ATA_EH_RESET;
+		}
 	}
 
 	/* If revalidation is requested, revalidate and reconfigure;
@@ -870,27 +722,20 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
 		tries--;
 
 		if (rc == -ENODEV) {
-			ehc->i.probe_mask |= 1;
+			ehc->i.probe_mask |= ATA_ALL_DEVICES;
 			detach = 1;
 			/* give it just two more chances */
 			tries = min(tries, 2);
 		}
 
 		if (tries) {
-			int sleep = ehc->i.flags & ATA_EHI_DID_RESET;
-
 			/* consecutive revalidation failures? speed down */
 			if (reval_failed)
-				sata_down_spd_limit(link);
+				sata_down_spd_limit(link, 0);
 			else
 				reval_failed = 1;
 
-			ata_dev_printk(dev, KERN_WARNING,
-				       "retrying hardreset%s\n",
-				       sleep ? " in 5 secs" : "");
-			if (sleep)
-				ssleep(5);
-			ehc->i.action |= ATA_EH_HARDRESET;
+			ehc->i.action |= ATA_EH_RESET;
 			goto retry;
 		} else {
 			ata_dev_printk(dev, KERN_ERR, "failed to recover PMP "
@@ -925,7 +770,7 @@ static int sata_pmp_eh_handle_disabled_links(struct ata_port *ap)
 
 	spin_lock_irqsave(ap->lock, flags);
 
-	ata_port_for_each_link(link, ap) {
+	ata_for_each_link(link, ap, EDGE) {
 		if (!(link->flags & ATA_LFLAG_DISABLED))
 			continue;
 
@@ -934,10 +779,9 @@ static int sata_pmp_eh_handle_disabled_links(struct ata_port *ap)
 		/* Some PMPs require hardreset sequence to get
 		 * SError.N working.
 		 */
-		if ((link->flags & ATA_LFLAG_HRST_TO_RESUME) &&
-		    (link->eh_context.i.flags & ATA_EHI_RESUME_LINK))
-			sata_link_hardreset(link, sata_deb_timing_normal,
-					    jiffies + ATA_TMOUT_INTERNAL_QUICK);
+		sata_link_hardreset(link, sata_deb_timing_normal,
+				ata_deadline(jiffies, ATA_TMOUT_INTERNAL_QUICK),
+				NULL, NULL);
 
 		/* unconditionally clear SError.N */
 		rc = sata_scr_write(link, SCR_ERROR, SERR_PHYRDY_CHG);
@@ -983,14 +827,6 @@ static int sata_pmp_handle_link_fail(struct ata_link *link, int *link_tries)
 /**
  *	sata_pmp_eh_recover - recover PMP-enabled port
  *	@ap: ATA port to recover
- *	@prereset: prereset method (can be NULL)
- *	@softreset: softreset method
- *	@hardreset: hardreset method
- *	@postreset: postreset method (can be NULL)
- *	@pmp_prereset: PMP prereset method (can be NULL)
- *	@pmp_softreset: PMP softreset method (can be NULL)
- *	@pmp_hardreset: PMP hardreset method (can be NULL)
- *	@pmp_postreset: PMP postreset method (can be NULL)
  *
  *	Drive EH recovery operation for PMP enabled port @ap.  This
  *	function recovers host and PMP ports with proper retrials and
@@ -1003,32 +839,31 @@ static int sata_pmp_handle_link_fail(struct ata_link *link, int *link_tries)
  *	RETURNS:
  *	0 on success, -errno on failure.
  */
-static int sata_pmp_eh_recover(struct ata_port *ap,
-		ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
-		ata_reset_fn_t hardreset, ata_postreset_fn_t postreset,
-		ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset,
-		ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset)
+static int sata_pmp_eh_recover(struct ata_port *ap)
 {
+	struct ata_port_operations *ops = ap->ops;
 	int pmp_tries, link_tries[SATA_PMP_MAX_PORTS];
 	struct ata_link *pmp_link = &ap->link;
 	struct ata_device *pmp_dev = pmp_link->device;
 	struct ata_eh_context *pmp_ehc = &pmp_link->eh_context;
+	u32 *gscr = pmp_dev->gscr;
 	struct ata_link *link;
 	struct ata_device *dev;
+	unsigned int err_mask;
 	u32 gscr_error, sntf;
 	int cnt, rc;
 
 	pmp_tries = ATA_EH_PMP_TRIES;
-	ata_port_for_each_link(link, ap)
+	ata_for_each_link(link, ap, EDGE)
 		link_tries[link->pmp] = ATA_EH_PMP_LINK_TRIES;
 
  retry:
 	/* PMP attached? */
-	if (!ap->nr_pmp_links) {
-		rc = ata_eh_recover(ap, prereset, softreset, hardreset,
-				    postreset, NULL);
+	if (!sata_pmp_attached(ap)) {
+		rc = ata_eh_recover(ap, ops->prereset, ops->softreset,
+				    ops->hardreset, ops->postreset, NULL);
 		if (rc) {
-			ata_link_for_each_dev(dev, &ap->link)
+			ata_for_each_dev(dev, &ap->link, ALL)
 				ata_dev_disable(dev);
 			return rc;
 		}
@@ -1037,26 +872,42 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
 			return 0;
 
 		/* new PMP online */
-		ata_port_for_each_link(link, ap)
+		ata_for_each_link(link, ap, EDGE)
 			link_tries[link->pmp] = ATA_EH_PMP_LINK_TRIES;
 
 		/* fall through */
 	}
 
 	/* recover pmp */
-	rc = sata_pmp_eh_recover_pmp(ap, prereset, softreset, hardreset,
-				     postreset);
+	rc = sata_pmp_eh_recover_pmp(ap, ops->prereset, ops->softreset,
+				     ops->hardreset, ops->postreset);
 	if (rc)
 		goto pmp_fail;
 
+	/* PHY event notification can disturb reset and other recovery
+	 * operations.  Turn it off.
+	 */
+	if (gscr[SATA_PMP_GSCR_FEAT_EN] & SATA_PMP_FEAT_NOTIFY) {
+		gscr[SATA_PMP_GSCR_FEAT_EN] &= ~SATA_PMP_FEAT_NOTIFY;
+
+		err_mask = sata_pmp_write(pmp_link, SATA_PMP_GSCR_FEAT_EN,
+					  gscr[SATA_PMP_GSCR_FEAT_EN]);
+		if (err_mask) {
+			ata_link_printk(pmp_link, KERN_WARNING,
+				"failed to disable NOTIFY (err_mask=0x%x)\n",
+				err_mask);
+			goto pmp_fail;
+		}
+	}
+
 	/* handle disabled links */
 	rc = sata_pmp_eh_handle_disabled_links(ap);
 	if (rc)
 		goto pmp_fail;
 
 	/* recover links */
-	rc = ata_eh_recover(ap, pmp_prereset, pmp_softreset, pmp_hardreset,
-			    pmp_postreset, &link);
+	rc = ata_eh_recover(ap, ops->pmp_prereset, ops->pmp_softreset,
+			    ops->pmp_hardreset, ops->pmp_postreset, &link);
 	if (rc)
 		goto link_fail;
 
@@ -1071,27 +922,29 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
 
 	/* enable notification */
 	if (pmp_dev->flags & ATA_DFLAG_AN) {
-		pmp_dev->gscr[SATA_PMP_GSCR_FEAT_EN] |= SATA_PMP_FEAT_NOTIFY;
-
-		rc = sata_pmp_write(pmp_dev->link, SATA_PMP_GSCR_FEAT_EN,
-				    pmp_dev->gscr[SATA_PMP_GSCR_FEAT_EN]);
-		if (rc) {
-			ata_dev_printk(pmp_dev, KERN_ERR,
-				       "failed to write PMP_FEAT_EN\n");
+		gscr[SATA_PMP_GSCR_FEAT_EN] |= SATA_PMP_FEAT_NOTIFY;
+
+		err_mask = sata_pmp_write(pmp_link, SATA_PMP_GSCR_FEAT_EN,
+					  gscr[SATA_PMP_GSCR_FEAT_EN]);
+		if (err_mask) {
+			ata_dev_printk(pmp_dev, KERN_ERR, "failed to write "
+				       "PMP_FEAT_EN (Emask=0x%x)\n", err_mask);
+			rc = -EIO;
 			goto pmp_fail;
 		}
 	}
 
 	/* check GSCR_ERROR */
-	rc = sata_pmp_read(pmp_link, SATA_PMP_GSCR_ERROR, &gscr_error);
-	if (rc) {
-		ata_dev_printk(pmp_dev, KERN_ERR,
-			       "failed to read PMP_GSCR_ERROR\n");
+	err_mask = sata_pmp_read(pmp_link, SATA_PMP_GSCR_ERROR, &gscr_error);
+	if (err_mask) {
+		ata_dev_printk(pmp_dev, KERN_ERR, "failed to read "
+			       "PMP_GSCR_ERROR (Emask=0x%x)\n", err_mask);
+		rc = -EIO;
 		goto pmp_fail;
 	}
 
 	cnt = 0;
-	ata_port_for_each_link(link, ap) {
+	ata_for_each_link(link, ap, EDGE) {
 		if (!(gscr_error & (1 << link->pmp)))
 			continue;
 
@@ -1117,7 +970,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
 
  link_fail:
 	if (sata_pmp_handle_link_fail(link, link_tries)) {
-		pmp_ehc->i.action |= ATA_EH_HARDRESET;
+		pmp_ehc->i.action |= ATA_EH_RESET;
 		goto retry;
 	}
 
@@ -1129,14 +982,11 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
 	if (ap->pflags & ATA_PFLAG_UNLOADING)
 		return rc;
 
-	if (!ap->nr_pmp_links)
+	if (!sata_pmp_attached(ap))
 		goto retry;
 
 	if (--pmp_tries) {
-		ata_port_printk(ap, KERN_WARNING,
-				"failed to recover PMP, retrying in 5 secs\n");
-		pmp_ehc->i.action |= ATA_EH_HARDRESET;
-		ssleep(5);
+		pmp_ehc->i.action |= ATA_EH_RESET;
 		goto retry;
 	}
 
@@ -1150,16 +1000,8 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
 }
 
 /**
- *	sata_pmp_do_eh - do standard error handling for PMP-enabled host
+ *	sata_pmp_error_handler - do standard error handling for PMP-enabled host
  *	@ap: host port to handle error for
- *	@prereset: prereset method (can be NULL)
- *	@softreset: softreset method
- *	@hardreset: hardreset method
- *	@postreset: postreset method (can be NULL)
- *	@pmp_prereset: PMP prereset method (can be NULL)
- *	@pmp_softreset: PMP softreset method (can be NULL)
- *	@pmp_hardreset: PMP hardreset method (can be NULL)
- *	@pmp_postreset: PMP postreset method (can be NULL)
  *
  *	Perform standard error handling sequence for PMP-enabled host
  *	@ap.
@@ -1167,16 +1009,14 @@ static int sata_pmp_eh_recover(struct ata_port *ap,
  *	LOCKING:
  *	Kernel thread context (may sleep).
  */
-void sata_pmp_do_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,
-		ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset,
-		ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset)
+void sata_pmp_error_handler(struct ata_port *ap)
 {
 	ata_eh_autopsy(ap);
 	ata_eh_report(ap);
-	sata_pmp_eh_recover(ap, prereset, softreset, hardreset, postreset,
-			    pmp_prereset, pmp_softreset, pmp_hardreset,
-			    pmp_postreset);
+	sata_pmp_eh_recover(ap);
 	ata_eh_finish(ap);
 }
+
+EXPORT_SYMBOL_GPL(sata_pmp_port_ops);
+EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);
+EXPORT_SYMBOL_GPL(sata_pmp_error_handler);