1 files changed, 112 insertions, 89 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index fecca4223f8e..88c242856dae 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -56,6 +56,7 @@
 #include <linux/workqueue.h>
 #include <linux/scatterlist.h>
 #include <linux/io.h>
+#include <linux/async.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
@@ -1006,6 +1007,7 @@ static const char *sata_spd_string(unsigned int spd)
 	static const char * const spd_str[] = {
 		"1.5 Gbps",
 		"3.0 Gbps",
+		"6.0 Gbps",
 	};
 
 	if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str))
@@ -1999,6 +2001,10 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev)
 	   as the caller should know this */
 	if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
 		return 0;
+	/* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6.  */
+	if (ata_id_is_cfa(adev->id)
+	    && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6))
+		return 0;
 	/* PIO3 and higher it is mandatory */
 	if (adev->pio_mode > XFER_PIO_2)
 		return 1;
@@ -3023,33 +3029,33 @@ int sata_set_spd(struct ata_link *link)
  */
 
 static const struct ata_timing ata_timing[] = {
-/*	{ XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960,   0 }, */
-	{ XFER_PIO_0,     70, 290, 240, 600, 165, 150, 600,   0 },
-	{ XFER_PIO_1,     50, 290,  93, 383, 125, 100, 383,   0 },
-	{ XFER_PIO_2,     30, 290,  40, 330, 100,  90, 240,   0 },
-	{ XFER_PIO_3,     30,  80,  70, 180,  80,  70, 180,   0 },
-	{ XFER_PIO_4,     25,  70,  25, 120,  70,  25, 120,   0 },
-	{ XFER_PIO_5,     15,  65,  25, 100,  65,  25, 100,   0 },
-	{ XFER_PIO_6,     10,  55,  20,  80,  55,  20,  80,   0 },
-
-	{ XFER_SW_DMA_0, 120,   0,   0,   0, 480, 480, 960,   0 },
-	{ XFER_SW_DMA_1,  90,   0,   0,   0, 240, 240, 480,   0 },
-	{ XFER_SW_DMA_2,  60,   0,   0,   0, 120, 120, 240,   0 },
-
-	{ XFER_MW_DMA_0,  60,   0,   0,   0, 215, 215, 480,   0 },
-	{ XFER_MW_DMA_1,  45,   0,   0,   0,  80,  50, 150,   0 },
-	{ XFER_MW_DMA_2,  25,   0,   0,   0,  70,  25, 120,   0 },
-	{ XFER_MW_DMA_3,  25,   0,   0,   0,  65,  25, 100,   0 },
-	{ XFER_MW_DMA_4,  25,   0,   0,   0,  55,  20,  80,   0 },
-
-/*	{ XFER_UDMA_SLOW,  0,   0,   0,   0,   0,   0,   0, 150 }, */
-	{ XFER_UDMA_0,     0,   0,   0,   0,   0,   0,   0, 120 },
-	{ XFER_UDMA_1,     0,   0,   0,   0,   0,   0,   0,  80 },
-	{ XFER_UDMA_2,     0,   0,   0,   0,   0,   0,   0,  60 },
-	{ XFER_UDMA_3,     0,   0,   0,   0,   0,   0,   0,  45 },
-	{ XFER_UDMA_4,     0,   0,   0,   0,   0,   0,   0,  30 },
-	{ XFER_UDMA_5,     0,   0,   0,   0,   0,   0,   0,  20 },
-	{ XFER_UDMA_6,     0,   0,   0,   0,   0,   0,   0,  15 },
+/*	{ XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 0,  960,   0 }, */
+	{ XFER_PIO_0,     70, 290, 240, 600, 165, 150, 0,  600,   0 },
+	{ XFER_PIO_1,     50, 290,  93, 383, 125, 100, 0,  383,   0 },
+	{ XFER_PIO_2,     30, 290,  40, 330, 100,  90, 0,  240,   0 },
+	{ XFER_PIO_3,     30,  80,  70, 180,  80,  70, 0,  180,   0 },
+	{ XFER_PIO_4,     25,  70,  25, 120,  70,  25, 0,  120,   0 },
+	{ XFER_PIO_5,     15,  65,  25, 100,  65,  25, 0,  100,   0 },
+	{ XFER_PIO_6,     10,  55,  20,  80,  55,  20, 0,   80,   0 },
+
+	{ XFER_SW_DMA_0, 120,   0,   0,   0, 480, 480, 50, 960,   0 },
+	{ XFER_SW_DMA_1,  90,   0,   0,   0, 240, 240, 30, 480,   0 },
+	{ XFER_SW_DMA_2,  60,   0,   0,   0, 120, 120, 20, 240,   0 },
+
+	{ XFER_MW_DMA_0,  60,   0,   0,   0, 215, 215, 20, 480,   0 },
+	{ XFER_MW_DMA_1,  45,   0,   0,   0,  80,  50, 5,  150,   0 },
+	{ XFER_MW_DMA_2,  25,   0,   0,   0,  70,  25, 5,  120,   0 },
+	{ XFER_MW_DMA_3,  25,   0,   0,   0,  65,  25, 5,  100,   0 },
+	{ XFER_MW_DMA_4,  25,   0,   0,   0,  55,  20, 5,   80,   0 },
+
+/*	{ XFER_UDMA_SLOW,  0,   0,   0,   0,   0,   0, 0,    0, 150 }, */
+	{ XFER_UDMA_0,     0,   0,   0,   0,   0,   0, 0,    0, 120 },
+	{ XFER_UDMA_1,     0,   0,   0,   0,   0,   0, 0,    0,  80 },
+	{ XFER_UDMA_2,     0,   0,   0,   0,   0,   0, 0,    0,  60 },
+	{ XFER_UDMA_3,     0,   0,   0,   0,   0,   0, 0,    0,  45 },
+	{ XFER_UDMA_4,     0,   0,   0,   0,   0,   0, 0,    0,  30 },
+	{ XFER_UDMA_5,     0,   0,   0,   0,   0,   0, 0,    0,  20 },
+	{ XFER_UDMA_6,     0,   0,   0,   0,   0,   0, 0,    0,  15 },
 
 	{ 0xFF }
 };
@@ -3059,14 +3065,15 @@ static const struct ata_timing ata_timing[] = {
 
 static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT)
 {
-	q->setup   = EZ(t->setup   * 1000,  T);
-	q->act8b   = EZ(t->act8b   * 1000,  T);
-	q->rec8b   = EZ(t->rec8b   * 1000,  T);
-	q->cyc8b   = EZ(t->cyc8b   * 1000,  T);
-	q->active  = EZ(t->active  * 1000,  T);
-	q->recover = EZ(t->recover * 1000,  T);
-	q->cycle   = EZ(t->cycle   * 1000,  T);
-	q->udma    = EZ(t->udma    * 1000, UT);
+	q->setup	= EZ(t->setup      * 1000,  T);
+	q->act8b	= EZ(t->act8b      * 1000,  T);
+	q->rec8b	= EZ(t->rec8b      * 1000,  T);
+	q->cyc8b	= EZ(t->cyc8b      * 1000,  T);
+	q->active	= EZ(t->active     * 1000,  T);
+	q->recover	= EZ(t->recover    * 1000,  T);
+	q->dmack_hold	= EZ(t->dmack_hold * 1000,  T);
+	q->cycle	= EZ(t->cycle      * 1000,  T);
+	q->udma		= EZ(t->udma       * 1000, UT);
 }
 
 void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b,
@@ -3078,6 +3085,7 @@ void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b,
 	if (what & ATA_TIMING_CYC8B  ) m->cyc8b   = max(a->cyc8b,   b->cyc8b);
 	if (what & ATA_TIMING_ACTIVE ) m->active  = max(a->active,  b->active);
 	if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover);
+	if (what & ATA_TIMING_DMACK_HOLD) m->dmack_hold = max(a->dmack_hold, b->dmack_hold);
 	if (what & ATA_TIMING_CYCLE  ) m->cycle   = max(a->cycle,   b->cycle);
 	if (what & ATA_TIMING_UDMA   ) m->udma    = max(a->udma,    b->udma);
 }
@@ -4550,7 +4558,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc)
 	struct scatterlist *sg = qc->sg;
 	int dir = qc->dma_dir;
 
-	WARN_ON(sg == NULL);
+	WARN_ON_ONCE(sg == NULL);
 
 	VPRINTK("unmapping %u sg elements\n", qc->n_elem);
 
@@ -4770,7 +4778,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
 	struct ata_port *ap = qc->ap;
 	unsigned int tag;
 
-	WARN_ON(qc == NULL);	/* ata_qc_from_tag _might_ return NULL */
+	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 
 	qc->flags = 0;
 	tag = qc->tag;
@@ -4785,8 +4793,8 @@ void __ata_qc_complete(struct ata_queued_cmd *qc)
 	struct ata_port *ap = qc->ap;
 	struct ata_link *link = qc->dev->link;
 
-	WARN_ON(qc == NULL);	/* ata_qc_from_tag _might_ return NULL */
-	WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
+	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+	WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
 
 	if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
 		ata_sg_clean(qc);
@@ -4872,7 +4880,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
 		struct ata_device *dev = qc->dev;
 		struct ata_eh_info *ehi = &dev->link->eh_info;
 
-		WARN_ON(ap->pflags & ATA_PFLAG_FROZEN);
+		WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
 
 		if (unlikely(qc->err_mask))
 			qc->flags |= ATA_QCFLAG_FAILED;
@@ -4994,16 +5002,16 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
 	 * check is skipped for old EH because it reuses active qc to
 	 * request ATAPI sense.
 	 */
-	WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
+	WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag));
 
 	if (ata_is_ncq(prot)) {
-		WARN_ON(link->sactive & (1 << qc->tag));
+		WARN_ON_ONCE(link->sactive & (1 << qc->tag));
 
 		if (!link->sactive)
 			ap->nr_active_links++;
 		link->sactive |= 1 << qc->tag;
 	} else {
-		WARN_ON(link->sactive);
+		WARN_ON_ONCE(link->sactive);
 
 		ap->nr_active_links++;
 		link->active_tag = qc->tag;
@@ -5909,6 +5917,65 @@ void ata_host_init(struct ata_host *host, struct device *dev,
 	host->ops = ops;
 }
 
+
+static void async_port_probe(void *data, async_cookie_t cookie)
+{
+	int rc;
+	struct ata_port *ap = data;
+
+	/*
+	 * If we're not allowed to scan this host in parallel,
+	 * we need to wait until all previous scans have completed
+	 * before going further.
+	 * Jeff Garzik says this is only within a controller, so we
+	 * don't need to wait for port 0, only for later ports.
+	 */
+	if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0)
+		async_synchronize_cookie(cookie);
+
+	/* probe */
+	if (ap->ops->error_handler) {
+		struct ata_eh_info *ehi = &ap->link.eh_info;
+		unsigned long flags;
+
+		ata_port_probe(ap);
+
+		/* kick EH for boot probing */
+		spin_lock_irqsave(ap->lock, flags);
+
+		ehi->probe_mask |= ATA_ALL_DEVICES;
+		ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
+		ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+
+		ap->pflags &= ~ATA_PFLAG_INITIALIZING;
+		ap->pflags |= ATA_PFLAG_LOADING;
+		ata_port_schedule_eh(ap);
+
+		spin_unlock_irqrestore(ap->lock, flags);
+
+		/* wait for EH to finish */
+		ata_port_wait_eh(ap);
+	} else {
+		DPRINTK("ata%u: bus probe begin\n", ap->print_id);
+		rc = ata_bus_probe(ap);
+		DPRINTK("ata%u: bus probe end\n", ap->print_id);
+
+		if (rc) {
+			/* FIXME: do something useful here?
+			 * Current libata behavior will
+			 * tear down everything when
+			 * the module is removed
+			 * or the h/w is unplugged.
+			 */
+		}
+	}
+
+	/* in order to keep device order, we need to synchronize at this point */
+	async_synchronize_cookie(cookie);
+
+	ata_scsi_scan_host(ap, 1);
+
+}
 /**
  *	ata_host_register - register initialized ATA host
  *	@host: ATA host to register
@@ -5988,52 +6055,9 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
 	DPRINTK("probe begin\n");
 	for (i = 0; i < host->n_ports; i++) {
 		struct ata_port *ap = host->ports[i];
-
-		/* probe */
-		if (ap->ops->error_handler) {
-			struct ata_eh_info *ehi = &ap->link.eh_info;
-			unsigned long flags;
-
-			ata_port_probe(ap);
-
-			/* kick EH for boot probing */
-			spin_lock_irqsave(ap->lock, flags);
-
-			ehi->probe_mask |= ATA_ALL_DEVICES;
-			ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
-			ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
-
-			ap->pflags &= ~ATA_PFLAG_INITIALIZING;
-			ap->pflags |= ATA_PFLAG_LOADING;
-			ata_port_schedule_eh(ap);
-
-			spin_unlock_irqrestore(ap->lock, flags);
-
-			/* wait for EH to finish */
-			ata_port_wait_eh(ap);
-		} else {
-			DPRINTK("ata%u: bus probe begin\n", ap->print_id);
-			rc = ata_bus_probe(ap);
-			DPRINTK("ata%u: bus probe end\n", ap->print_id);
-
-			if (rc) {
-				/* FIXME: do something useful here?
-				 * Current libata behavior will
-				 * tear down everything when
-				 * the module is removed
-				 * or the h/w is unplugged.
-				 */
-			}
-		}
-	}
-
-	/* probes are done, now scan each port's disk(s) */
-	DPRINTK("host probe begin\n");
-	for (i = 0; i < host->n_ports; i++) {
-		struct ata_port *ap = host->ports[i];
-
-		ata_scsi_scan_host(ap, 1);
+		async_schedule(async_port_probe, ap);
 	}
+	DPRINTK("probe end\n");
 
 	return 0;
 }
@@ -6616,7 +6640,6 @@ EXPORT_SYMBOL_GPL(ata_dev_pair);
 EXPORT_SYMBOL_GPL(ata_port_disable);
 EXPORT_SYMBOL_GPL(ata_ratelimit);
 EXPORT_SYMBOL_GPL(ata_wait_register);
-EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
 EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
 EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
 EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy);