[SATA] libata-dev queue updated

[Jeff Garzik <jgarzik@pobox.com>]

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Several updates to the libata-dev.git repository.  Some of the branches 
have been folded into a new upstream-2.6.13 branch, which holds several 
changes (see attached).  Other branches were updated to the most recent 
kernel, which contained doc updates that caused some minor merge conflicts.

I haven't yet updated 'passthru' and 'chs-support' branches to the 
latest kernel.

Git Repository URL:
rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev.git

List of branches:
adma          chs-support  master    pdc2027x           sleeping-eh
adma-mwi      iomap        ncq       promise-sata-pata  upstream-2.6.13
atapi-enable  iomap-step1  passthru  sil24

The "sleeping-eh" branch will be going upstream via James B and the SCSI 
crew (sounds like a hiphop group, doesn't it?)

	Jeff




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Brad Campbell <brad@wasp.net.au>:
  libata basic detection and errata for PATA->SATA bridges

Jeff Garzik <jgarzik@pobox.com>:
  [libata] ahci: finish ATAPI support (hopefully)
  [libata] ahci: minor PCI MSI cleanup
  [libata] ahci: Update for recent ->host_stop() API change
  [libata ahci] support PCI MSI interrupt vector

Narendra Sankar <nsankar@broadcom.com>:
  sata_svw: Add support for new device IDs

Tobias Lorenz <tobias.lorenz@gmx.net>:
  [libata sata_promise] pdc20619 (PATA) support



 drivers/scsi/ahci.c         |  100 +++++++++++++++++++++++++++++++++-----------
 drivers/scsi/libata-core.c  |   35 ++++++++++++++-
 drivers/scsi/sata_promise.c |   26 +++++++++++
 drivers/scsi/sata_svw.c     |   25 +++++++----
 include/linux/ata.h         |    1 
 include/linux/libata.h      |    1 
 6 files changed, 151 insertions(+), 37 deletions(-)



diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -39,7 +39,7 @@
 #include <asm/io.h>
 
 #define DRV_NAME	"ahci"
-#define DRV_VERSION	"1.00"
+#define DRV_VERSION	"1.01"
 
 
 enum {
@@ -50,6 +50,7 @@ enum {
 	AHCI_CMD_SLOT_SZ	= 32 * 32,
 	AHCI_RX_FIS_SZ		= 256,
 	AHCI_CMD_TBL_HDR	= 0x80,
+	AHCI_CMD_TBL_CDB	= 0x40,
 	AHCI_CMD_TBL_SZ		= AHCI_CMD_TBL_HDR + (AHCI_MAX_SG * 16),
 	AHCI_PORT_PRIV_DMA_SZ	= AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_SZ +
 				  AHCI_RX_FIS_SZ,
@@ -134,6 +135,9 @@ enum {
 	PORT_CMD_ICC_ACTIVE	= (0x1 << 28), /* Put i/f in active state */
 	PORT_CMD_ICC_PARTIAL	= (0x2 << 28), /* Put i/f in partial state */
 	PORT_CMD_ICC_SLUMBER	= (0x6 << 28), /* Put i/f in slumber state */
+
+	/* hpriv->flags bits */
+	AHCI_FLAG_MSI		= (1 << 0),
 };
 
 struct ahci_cmd_hdr {
@@ -183,6 +187,7 @@ static void ahci_qc_prep(struct ata_queu
 static u8 ahci_check_status(struct ata_port *ap);
 static u8 ahci_check_err(struct ata_port *ap);
 static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
+static void ahci_remove_one (struct pci_dev *pdev);
 
 static Scsi_Host_Template ahci_sht = {
 	.module			= THIS_MODULE,
@@ -272,7 +277,7 @@ static struct pci_driver ahci_pci_driver
 	.name			= DRV_NAME,
 	.id_table		= ahci_pci_tbl,
 	.probe			= ahci_init_one,
-	.remove			= ata_pci_remove_one,
+	.remove			= ahci_remove_one,
 };
 
 
@@ -506,7 +511,8 @@ static void ahci_fill_sg(struct ata_queu
 
 static void ahci_qc_prep(struct ata_queued_cmd *qc)
 {
-	struct ahci_port_priv *pp = qc->ap->private_data;
+	struct ata_port *ap = qc->ap;
+	struct ahci_port_priv *pp = ap->private_data;
 	u32 opts;
 	const u32 cmd_fis_len = 5; /* five dwords */
 
@@ -518,18 +524,8 @@ static void ahci_qc_prep(struct ata_queu
 	opts = (qc->n_elem << 16) | cmd_fis_len;
 	if (qc->tf.flags & ATA_TFLAG_WRITE)
 		opts |= AHCI_CMD_WRITE;
-
-	switch (qc->tf.protocol) {
-	case ATA_PROT_ATAPI:
-	case ATA_PROT_ATAPI_NODATA:
-	case ATA_PROT_ATAPI_DMA:
+	if (is_atapi_taskfile(&qc->tf))
 		opts |= AHCI_CMD_ATAPI;
-		break;
-
-	default:
-		/* do nothing */
-		break;
-	}
 
 	pp->cmd_slot[0].opts = cpu_to_le32(opts);
 	pp->cmd_slot[0].status = 0;
@@ -541,6 +537,10 @@ static void ahci_qc_prep(struct ata_queu
 	 * a SATA Register - Host to Device command FIS.
 	 */
 	ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0);
+	if (opts & AHCI_CMD_ATAPI) {
+		memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
+		memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, ap->cdb_len);
+	}
 
 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))
 		return;
@@ -795,8 +795,6 @@ static int ahci_host_init(struct ata_pro
 				return rc;
 			}
 		}
-
-		hpriv->flags |= HOST_CAP_64;
 	} else {
 		rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
 		if (rc) {
@@ -879,15 +877,19 @@ static int ahci_host_init(struct ata_pro
 }
 
 /* move to PCI layer, integrate w/ MSI stuff */
-static void pci_enable_intx(struct pci_dev *pdev)
+static void pci_intx(struct pci_dev *pdev, int enable)
 {
-	u16 pci_command;
+	u16 pci_command, new;
 
 	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
-	if (pci_command & PCI_COMMAND_INTX_DISABLE) {
-		pci_command &= ~PCI_COMMAND_INTX_DISABLE;
+
+	if (enable)
+		new = pci_command & ~PCI_COMMAND_INTX_DISABLE;
+	else
+		new = pci_command | PCI_COMMAND_INTX_DISABLE;
+
+	if (new != pci_command)
 		pci_write_config_word(pdev, PCI_COMMAND, pci_command);
-	}
 }
 
 static void ahci_print_info(struct ata_probe_ent *probe_ent)
@@ -969,7 +971,7 @@ static int ahci_init_one (struct pci_dev
 	unsigned long base;
 	void *mmio_base;
 	unsigned int board_idx = (unsigned int) ent->driver_data;
-	int pci_dev_busy = 0;
+	int have_msi, pci_dev_busy = 0;
 	int rc;
 
 	VPRINTK("ENTER\n");
@@ -987,12 +989,17 @@ static int ahci_init_one (struct pci_dev
 		goto err_out;
 	}
 
-	pci_enable_intx(pdev);
+	if (pci_enable_msi(pdev) == 0)
+		have_msi = 1;
+	else {
+		pci_intx(pdev, 1);
+		have_msi = 0;
+	}
 
 	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
 	if (probe_ent == NULL) {
 		rc = -ENOMEM;
-		goto err_out_regions;
+		goto err_out_msi;
 	}
 
 	memset(probe_ent, 0, sizeof(*probe_ent));
@@ -1025,6 +1032,9 @@ static int ahci_init_one (struct pci_dev
 	probe_ent->mmio_base = mmio_base;
 	probe_ent->private_data = hpriv;
 
+	if (have_msi)
+		hpriv->flags |= AHCI_FLAG_MSI;
+
 	/* initialize adapter */
 	rc = ahci_host_init(probe_ent);
 	if (rc)
@@ -1044,7 +1054,11 @@ err_out_iounmap:
 	iounmap(mmio_base);
 err_out_free_ent:
 	kfree(probe_ent);
-err_out_regions:
+err_out_msi:
+	if (have_msi)
+		pci_disable_msi(pdev);
+	else
+		pci_intx(pdev, 0);
 	pci_release_regions(pdev);
 err_out:
 	if (!pci_dev_busy)
@@ -1052,6 +1066,42 @@ err_out:
 	return rc;
 }
 
+static void ahci_remove_one (struct pci_dev *pdev)
+{
+	struct device *dev = pci_dev_to_dev(pdev);
+	struct ata_host_set *host_set = dev_get_drvdata(dev);
+	struct ahci_host_priv *hpriv = host_set->private_data;
+	struct ata_port *ap;
+	unsigned int i;
+	int have_msi;
+
+	for (i = 0; i < host_set->n_ports; i++) {
+		ap = host_set->ports[i];
+
+		scsi_remove_host(ap->host);
+	}
+
+	have_msi = hpriv->flags & AHCI_FLAG_MSI;
+	free_irq(host_set->irq, host_set);
+
+	for (i = 0; i < host_set->n_ports; i++) {
+		ap = host_set->ports[i];
+
+		ata_scsi_release(ap->host);
+		scsi_host_put(ap->host);
+	}
+
+	host_set->ops->host_stop(host_set);
+	kfree(host_set);
+
+	if (have_msi)
+		pci_disable_msi(pdev);
+	else
+		pci_intx(pdev, 0);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	dev_set_drvdata(dev, NULL);
+}
 
 static int __init ahci_init(void)
 {
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1295,6 +1295,37 @@ err_out:
 	DPRINTK("EXIT, err\n");
 }
 
+
+static inline u8 ata_dev_knobble(struct ata_port *ap)
+{
+	return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(ap->device->id)));
+}
+
+/**
+ * 	ata_dev_config - Run device specific handlers and check for
+ * 			 SATA->PATA bridges
+ * 	@ap: Bus 
+ * 	@i:  Device
+ *
+ * 	LOCKING:
+ */
+ 
+void ata_dev_config(struct ata_port *ap, unsigned int i)
+{
+	/* limit bridge transfers to udma5, 200 sectors */
+	if (ata_dev_knobble(ap)) {
+		printk(KERN_INFO "ata%u(%u): applying bridge limits\n",
+			ap->id, ap->device->devno);
+		ap->udma_mask &= ATA_UDMA5;
+		ap->host->max_sectors = ATA_MAX_SECTORS;
+		ap->host->hostt->max_sectors = ATA_MAX_SECTORS;
+		ap->device->flags |= ATA_DFLAG_LOCK_SECTORS;
+	}
+
+	if (ap->ops->dev_config)
+		ap->ops->dev_config(ap, &ap->device[i]);
+}
+
 /**
  *	ata_bus_probe - Reset and probe ATA bus
  *	@ap: Bus to probe
@@ -1322,8 +1353,7 @@ static int ata_bus_probe(struct ata_port
 		ata_dev_identify(ap, i);
 		if (ata_dev_present(&ap->device[i])) {
 			found = 1;
-			if (ap->ops->dev_config)
-				ap->ops->dev_config(ap, &ap->device[i]);
+			ata_dev_config(ap,i);
 		}
 	}
 
@@ -4408,6 +4438,7 @@ EXPORT_SYMBOL_GPL(ata_scsi_release);
 EXPORT_SYMBOL_GPL(ata_host_intr);
 EXPORT_SYMBOL_GPL(ata_dev_classify);
 EXPORT_SYMBOL_GPL(ata_dev_id_string);
+EXPORT_SYMBOL_GPL(ata_dev_config);
 EXPORT_SYMBOL_GPL(ata_scsi_simulate);
 
 #ifdef CONFIG_PCI
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -59,6 +59,7 @@ enum {
 
 	board_2037x		= 0,	/* FastTrak S150 TX2plus */
 	board_20319		= 1,	/* FastTrak S150 TX4 */
+	board_20619		= 2,	/* FastTrak TX4000 */
 
 	PDC_HAS_PATA		= (1 << 1), /* PDC20375 has PATA */
 
@@ -147,6 +148,17 @@ static struct ata_port_info pdc_port_inf
 		.udma_mask	= 0x7f, /* udma0-6 ; FIXME */
 		.port_ops	= &pdc_ata_ops,
 	},
+
+	/* board_20619 */
+	{
+		.sht		= &pdc_ata_sht,
+		.host_flags	= ATA_FLAG_NO_LEGACY | ATA_FLAG_SRST |
+				  ATA_FLAG_MMIO | ATA_FLAG_SLAVE_POSS,
+		.pio_mask	= 0x1f, /* pio0-4 */
+		.mwdma_mask	= 0x07, /* mwdma0-2 */
+		.udma_mask	= 0x7f, /* udma0-6 ; FIXME */
+		.port_ops	= &pdc_ata_ops,
+	},
 };
 
 static struct pci_device_id pdc_ata_pci_tbl[] = {
@@ -172,6 +184,9 @@ static struct pci_device_id pdc_ata_pci_
 	{ PCI_VENDOR_ID_PROMISE, 0x3d18, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 	  board_20319 },
 
+	{ PCI_VENDOR_ID_PROMISE, 0x6629, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+	  board_20619 },
+
 	{ }	/* terminate list */
 };
 
@@ -636,6 +651,15 @@ static int pdc_ata_init_one (struct pci_
 	case board_2037x:
        		probe_ent->n_ports = 2;
 		break;
+	case board_20619:
+		probe_ent->n_ports = 4;
+
+		pdc_ata_setup_port(&probe_ent->port[2], base + 0x300);
+		pdc_ata_setup_port(&probe_ent->port[3], base + 0x380);
+
+		probe_ent->port[2].scr_addr = base + 0x600;
+		probe_ent->port[3].scr_addr = base + 0x700;
+                break;
 	default:
 		BUG();
 		break;
@@ -676,7 +700,7 @@ static void __exit pdc_ata_exit(void)
 
 
 MODULE_AUTHOR("Jeff Garzik");
-MODULE_DESCRIPTION("Promise SATA TX2/TX4 low-level driver");
+MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
 MODULE_LICENSE("GPL");
 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
 MODULE_VERSION(DRV_VERSION);
diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
--- a/drivers/scsi/sata_svw.c
+++ b/drivers/scsi/sata_svw.c
@@ -344,6 +344,7 @@ static int k2_sata_init_one (struct pci_
 	void *mmio_base;
 	int pci_dev_busy = 0;
 	int rc;
+	int i;
 
 	if (!printed_version++)
 		printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
@@ -421,11 +422,11 @@ static int k2_sata_init_one (struct pci_
 	probe_ent->mwdma_mask = 0x7;
 	probe_ent->udma_mask = 0x7f;
 
-	/* We have 4 ports per PCI function */
-	k2_sata_setup_port(&probe_ent->port[0], base + 0 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[1], base + 1 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[2], base + 2 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[3], base + 3 * K2_SATA_PORT_OFFSET);
+	/* different controllers have different number of ports - currently 4 or 8 */
+	/* All ports are on the same function. Multi-function device is no
+	 * longer available. This should not be seen in any system. */
+	for (i = 0; i < ent->driver_data; i++)
+		k2_sata_setup_port(&probe_ent->port[i], base + i * K2_SATA_PORT_OFFSET);
 
 	pci_set_master(pdev);
 
@@ -445,11 +446,17 @@ err_out:
 	return rc;
 }
 
-
+/* 0x240 is device ID for Apple K2 device
+ * 0x241 is device ID for Serverworks Frodo4
+ * 0x242 is device ID for Serverworks Frodo8
+ * 0x24a is device ID for BCM5785 (aka HT1000) HT southbridge integrated SATA
+ * controller
+ * */
 static struct pci_device_id k2_sata_pci_tbl[] = {
-	{ 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
-	{ 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
-	{ 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
+	{ 0x1166, 0x024a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 	{ }
 };
 
diff --git a/include/linux/ata.h b/include/linux/ata.h
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -224,6 +224,7 @@ struct ata_taskfile {
 };
 
 #define ata_id_is_ata(id)	(((id)[0] & (1 << 15)) == 0)
+#define ata_id_is_sata(id)	((id)[93] == 0)
 #define ata_id_rahead_enabled(id) ((id)[85] & (1 << 6))
 #define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
 #define ata_id_has_flush(id) ((id)[83] & (1 << 12))
diff --git a/include/linux/libata.h b/include/linux/libata.h
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -421,6 +421,7 @@ extern void ata_sg_init(struct ata_queue
 extern unsigned int ata_dev_classify(struct ata_taskfile *tf);
 extern void ata_dev_id_string(u16 *id, unsigned char *s,
 			      unsigned int ofs, unsigned int len);
+extern void ata_dev_config(struct ata_port *ap, unsigned int i);
 extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
 extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 extern void ata_bmdma_stop(struct ata_port *ap);