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authorTejun Heo <htejun@gmail.com>2007-08-06 05:36:22 -0400
committerJeff Garzik <jeff@garzik.org>2007-10-12 14:55:30 -0400
commit9af5c9c97dc9d599281778864c72b385f0c63341 (patch)
tree8359986bd42c4a9a5b1993078aa9ee4c7971ac3d
parent640fdb504941fa2b9f6f274716fc9f97f2bf6bff (diff)
libata-link: introduce ata_link
Introduce ata_link. It abstracts PHY and sits between ata_port and ata_device. This new level of abstraction is necessary to support SATA Port Multiplier, which basically adds a bunch of links (PHYs) to a ATA host port. Fields related to command execution, spd_limit and EH are per-link and thus moved to ata_link. This patch only defines the host link. Multiple link handling will be added later. Also, a lot of ap->link derefences are added but many of them will be removed as each part is converted to deal directly with ata_link instead of ata_port. This patch introduces no behavior change. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat
-rw-r--r--drivers/ata/ahci.c18
-rw-r--r--drivers/ata/ata_generic.c2
-rw-r--r--drivers/ata/libata-acpi.c21
-rw-r--r--drivers/ata/libata-core.c157
-rw-r--r--drivers/ata/libata-eh.c100
-rw-r--r--drivers/ata/libata-scsi.c41
-rw-r--r--drivers/ata/libata-sff.c4
-rw-r--r--drivers/ata/pata_it821x.c4
-rw-r--r--drivers/ata/pata_ixp4xx_cf.c4
-rw-r--r--drivers/ata/pata_legacy.c4
-rw-r--r--drivers/ata/pata_optidma.c4
-rw-r--r--drivers/ata/pata_pcmcia.c4
-rw-r--r--drivers/ata/pata_pdc2027x.c2
-rw-r--r--drivers/ata/pata_platform.c2
-rw-r--r--drivers/ata/pata_qdi.c2
-rw-r--r--drivers/ata/pata_rz1000.c2
-rw-r--r--drivers/ata/pata_scc.c2
-rw-r--r--drivers/ata/pata_sis.c2
-rw-r--r--drivers/ata/pata_winbond.c2
-rw-r--r--drivers/ata/pdc_adma.c9
-rw-r--r--drivers/ata/sata_inic162x.c7
-rw-r--r--drivers/ata/sata_mv.c14
-rw-r--r--drivers/ata/sata_nv.c26
-rw-r--r--drivers/ata/sata_promise.c6
-rw-r--r--drivers/ata/sata_qstor.c4
-rw-r--r--drivers/ata/sata_sil.c14
-rw-r--r--drivers/ata/sata_sil24.c14
-rw-r--r--drivers/ata/sata_sx4.c4
-rw-r--r--drivers/ata/sata_via.c2
-rw-r--r--drivers/ata/sata_vsc.c2
-rw-r--r--drivers/scsi/ipr.c6
-rw-r--r--drivers/scsi/libsas/sas_ata.c10
-rw-r--r--include/linux/libata.h40
33 files changed, 280 insertions, 255 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index c16820325d7b..c72fa468a697 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1064,7 +1064,7 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
1064 ata_port_printk(ap, KERN_WARNING, 1064 ata_port_printk(ap, KERN_WARNING,
1065 "failed to reset engine (errno=%d)", rc); 1065 "failed to reset engine (errno=%d)", rc);
1066 1066
1067 ata_tf_init(ap->device, &tf); 1067 ata_tf_init(ap->link.device, &tf);
1068 1068
1069 /* issue the first D2H Register FIS */ 1069 /* issue the first D2H Register FIS */
1070 msecs = 0; 1070 msecs = 0;
@@ -1132,7 +1132,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
1132 ahci_stop_engine(ap); 1132 ahci_stop_engine(ap);
1133 1133
1134 /* clear D2H reception area to properly wait for D2H FIS */ 1134 /* clear D2H reception area to properly wait for D2H FIS */
1135 ata_tf_init(ap->device, &tf); 1135 ata_tf_init(ap->link.device, &tf);
1136 tf.command = 0x80; 1136 tf.command = 0x80;
1137 ata_tf_to_fis(&tf, 0, 0, d2h_fis); 1137 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1138 1138
@@ -1159,7 +1159,7 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
1159 1159
1160 ahci_stop_engine(ap); 1160 ahci_stop_engine(ap);
1161 1161
1162 rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->eh_context), 1162 rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->link.eh_context),
1163 deadline); 1163 deadline);
1164 1164
1165 /* vt8251 needs SError cleared for the port to operate */ 1165 /* vt8251 needs SError cleared for the port to operate */
@@ -1278,7 +1278,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc)
1278static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) 1278static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1279{ 1279{
1280 struct ahci_port_priv *pp = ap->private_data; 1280 struct ahci_port_priv *pp = ap->private_data;
1281 struct ata_eh_info *ehi = &ap->eh_info; 1281 struct ata_eh_info *ehi = &ap->link.eh_info;
1282 unsigned int err_mask = 0, action = 0; 1282 unsigned int err_mask = 0, action = 0;
1283 struct ata_queued_cmd *qc; 1283 struct ata_queued_cmd *qc;
1284 u32 serror; 1284 u32 serror;
@@ -1332,7 +1332,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1332 ehi->serror |= serror; 1332 ehi->serror |= serror;
1333 ehi->action |= action; 1333 ehi->action |= action;
1334 1334
1335 qc = ata_qc_from_tag(ap, ap->active_tag); 1335 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1336 if (qc) 1336 if (qc)
1337 qc->err_mask |= err_mask; 1337 qc->err_mask |= err_mask;
1338 else 1338 else
@@ -1347,7 +1347,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1347static void ahci_port_intr(struct ata_port *ap) 1347static void ahci_port_intr(struct ata_port *ap)
1348{ 1348{
1349 void __iomem *port_mmio = ap->ioaddr.cmd_addr; 1349 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1350 struct ata_eh_info *ehi = &ap->eh_info; 1350 struct ata_eh_info *ehi = &ap->link.eh_info;
1351 struct ahci_port_priv *pp = ap->private_data; 1351 struct ahci_port_priv *pp = ap->private_data;
1352 u32 status, qc_active; 1352 u32 status, qc_active;
1353 int rc, known_irq = 0; 1353 int rc, known_irq = 0;
@@ -1360,7 +1360,7 @@ static void ahci_port_intr(struct ata_port *ap)
1360 return; 1360 return;
1361 } 1361 }
1362 1362
1363 if (ap->sactive) 1363 if (ap->link.sactive)
1364 qc_active = readl(port_mmio + PORT_SCR_ACT); 1364 qc_active = readl(port_mmio + PORT_SCR_ACT);
1365 else 1365 else
1366 qc_active = readl(port_mmio + PORT_CMD_ISSUE); 1366 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
@@ -1380,7 +1380,7 @@ static void ahci_port_intr(struct ata_port *ap)
1380 /* if !NCQ, ignore. No modern ATA device has broken HSM 1380 /* if !NCQ, ignore. No modern ATA device has broken HSM
1381 * implementation for non-NCQ commands. 1381 * implementation for non-NCQ commands.
1382 */ 1382 */
1383 if (!ap->sactive) 1383 if (!ap->link.sactive)
1384 return; 1384 return;
1385 1385
1386 if (status & PORT_IRQ_D2H_REG_FIS) { 1386 if (status & PORT_IRQ_D2H_REG_FIS) {
@@ -1433,7 +1433,7 @@ static void ahci_port_intr(struct ata_port *ap)
1433 if (!known_irq) 1433 if (!known_irq)
1434 ata_port_printk(ap, KERN_INFO, "spurious interrupt " 1434 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1435 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n", 1435 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1436 status, ap->active_tag, ap->sactive); 1436 status, ap->link.active_tag, ap->link.sactive);
1437} 1437}
1438 1438
1439static void ahci_irq_clear(struct ata_port *ap) 1439static void ahci_irq_clear(struct ata_port *ap)
diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c
index 945466954724..b5e390ff5bd8 100644
--- a/drivers/ata/ata_generic.c
+++ b/drivers/ata/ata_generic.c
@@ -53,7 +53,7 @@ static int generic_set_mode(struct ata_port *ap, struct ata_device **unused)
53 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); 53 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
54 54
55 for (i = 0; i < ATA_MAX_DEVICES; i++) { 55 for (i = 0; i < ATA_MAX_DEVICES; i++) {
56 struct ata_device *dev = &ap->device[i]; 56 struct ata_device *dev = &ap->link.device[i];
57 if (ata_dev_enabled(dev)) { 57 if (ata_dev_enabled(dev)) {
58 /* We don't really care */ 58 /* We don't really care */
59 dev->pio_mode = XFER_PIO_0; 59 dev->pio_mode = XFER_PIO_0;
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index c059f78ad944..0023ac4ff496 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -44,7 +44,8 @@ static void ata_acpi_associate_sata_port(struct ata_port *ap)
44{ 44{
45 acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); 45 acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
46 46
47 ap->device->acpi_handle = acpi_get_child(ap->host->acpi_handle, adr); 47 ap->link.device->acpi_handle =
48 acpi_get_child(ap->host->acpi_handle, adr);
48} 49}
49 50
50static void ata_acpi_associate_ide_port(struct ata_port *ap) 51static void ata_acpi_associate_ide_port(struct ata_port *ap)
@@ -60,7 +61,7 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
60 max_devices++; 61 max_devices++;
61 62
62 for (i = 0; i < max_devices; i++) { 63 for (i = 0; i < max_devices; i++) {
63 struct ata_device *dev = &ap->device[i]; 64 struct ata_device *dev = &ap->link.device[i];
64 65
65 dev->acpi_handle = acpi_get_child(ap->acpi_handle, i); 66 dev->acpi_handle = acpi_get_child(ap->acpi_handle, i);
66 } 67 }
@@ -182,10 +183,10 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
182 /* Buffers for id may need byteswapping ? */ 183 /* Buffers for id may need byteswapping ? */
183 in_params[1].type = ACPI_TYPE_BUFFER; 184 in_params[1].type = ACPI_TYPE_BUFFER;
184 in_params[1].buffer.length = 512; 185 in_params[1].buffer.length = 512;
185 in_params[1].buffer.pointer = (u8 *)ap->device[0].id; 186 in_params[1].buffer.pointer = (u8 *)ap->link.device[0].id;
186 in_params[2].type = ACPI_TYPE_BUFFER; 187 in_params[2].type = ACPI_TYPE_BUFFER;
187 in_params[2].buffer.length = 512; 188 in_params[2].buffer.length = 512;
188 in_params[2].buffer.pointer = (u8 *)ap->device[1].id; 189 in_params[2].buffer.pointer = (u8 *)ap->link.device[1].id;
189 190
190 input.count = 3; 191 input.count = 3;
191 input.pointer = in_params; 192 input.pointer = in_params;
@@ -226,7 +227,7 @@ static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm)
226static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf, 227static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf,
227 void **ptr_to_free) 228 void **ptr_to_free)
228{ 229{
229 struct ata_port *ap = dev->ap; 230 struct ata_port *ap = dev->link->ap;
230 acpi_status status; 231 acpi_status status;
231 struct acpi_buffer output; 232 struct acpi_buffer output;
232 union acpi_object *out_obj; 233 union acpi_object *out_obj;
@@ -320,7 +321,7 @@ static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf,
320static int taskfile_load_raw(struct ata_device *dev, 321static int taskfile_load_raw(struct ata_device *dev,
321 const struct ata_acpi_gtf *gtf) 322 const struct ata_acpi_gtf *gtf)
322{ 323{
323 struct ata_port *ap = dev->ap; 324 struct ata_port *ap = dev->link->ap;
324 struct ata_taskfile tf, rtf; 325 struct ata_taskfile tf, rtf;
325 unsigned int err_mask; 326 unsigned int err_mask;
326 327
@@ -424,7 +425,7 @@ static int ata_acpi_exec_tfs(struct ata_device *dev)
424 */ 425 */
425static int ata_acpi_push_id(struct ata_device *dev) 426static int ata_acpi_push_id(struct ata_device *dev)
426{ 427{
427 struct ata_port *ap = dev->ap; 428 struct ata_port *ap = dev->link->ap;
428 int err; 429 int err;
429 acpi_status status; 430 acpi_status status;
430 struct acpi_object_list input; 431 struct acpi_object_list input;
@@ -519,7 +520,7 @@ void ata_acpi_on_resume(struct ata_port *ap)
519 520
520 /* schedule _GTF */ 521 /* schedule _GTF */
521 for (i = 0; i < ATA_MAX_DEVICES; i++) 522 for (i = 0; i < ATA_MAX_DEVICES; i++)
522 ap->device[i].flags |= ATA_DFLAG_ACPI_PENDING; 523 ap->link.device[i].flags |= ATA_DFLAG_ACPI_PENDING;
523} 524}
524 525
525/** 526/**
@@ -538,8 +539,8 @@ void ata_acpi_on_resume(struct ata_port *ap)
538 */ 539 */
539int ata_acpi_on_devcfg(struct ata_device *dev) 540int ata_acpi_on_devcfg(struct ata_device *dev)
540{ 541{
541 struct ata_port *ap = dev->ap; 542 struct ata_port *ap = dev->link->ap;
542 struct ata_eh_context *ehc = &ap->eh_context; 543 struct ata_eh_context *ehc = &ap->link.eh_context;
543 int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA; 544 int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA;
544 int rc; 545 int rc;
545 546
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 772be09b4689..dd2de485124a 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -235,7 +235,7 @@ static int ata_rwcmd_protocol(struct ata_taskfile *tf, struct ata_device *dev)
235 if (dev->flags & ATA_DFLAG_PIO) { 235 if (dev->flags & ATA_DFLAG_PIO) {
236 tf->protocol = ATA_PROT_PIO; 236 tf->protocol = ATA_PROT_PIO;
237 index = dev->multi_count ? 0 : 8; 237 index = dev->multi_count ? 0 : 8;
238 } else if (lba48 && (dev->ap->flags & ATA_FLAG_PIO_LBA48)) { 238 } else if (lba48 && (dev->link->ap->flags & ATA_FLAG_PIO_LBA48)) {
239 /* Unable to use DMA due to host limitation */ 239 /* Unable to use DMA due to host limitation */
240 tf->protocol = ATA_PROT_PIO; 240 tf->protocol = ATA_PROT_PIO;
241 index = dev->multi_count ? 0 : 8; 241 index = dev->multi_count ? 0 : 8;
@@ -604,7 +604,7 @@ static const char *sata_spd_string(unsigned int spd)
604void ata_dev_disable(struct ata_device *dev) 604void ata_dev_disable(struct ata_device *dev)
605{ 605{
606 if (ata_dev_enabled(dev)) { 606 if (ata_dev_enabled(dev)) {
607 if (ata_msg_drv(dev->ap)) 607 if (ata_msg_drv(dev->link->ap))
608 ata_dev_printk(dev, KERN_WARNING, "disabled\n"); 608 ata_dev_printk(dev, KERN_WARNING, "disabled\n");
609 ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | 609 ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 |
610 ATA_DNXFER_QUIET); 610 ATA_DNXFER_QUIET);
@@ -735,7 +735,7 @@ ata_dev_try_classify(struct ata_port *ap, unsigned int device, u8 *r_err)
735 /* see if device passed diags: if master then continue and warn later */ 735 /* see if device passed diags: if master then continue and warn later */
736 if (err == 0 && device == 0) 736 if (err == 0 && device == 0)
737 /* diagnostic fail : do nothing _YET_ */ 737 /* diagnostic fail : do nothing _YET_ */
738 ap->device[device].horkage |= ATA_HORKAGE_DIAGNOSTIC; 738 ap->link.device[device].horkage |= ATA_HORKAGE_DIAGNOSTIC;
739 else if (err == 1) 739 else if (err == 1)
740 /* do nothing */ ; 740 /* do nothing */ ;
741 else if ((device == 0) && (err == 0x81)) 741 else if ((device == 0) && (err == 0x81))
@@ -1150,7 +1150,7 @@ void ata_dev_select(struct ata_port *ap, unsigned int device,
1150 ap->ops->dev_select(ap, device); 1150 ap->ops->dev_select(ap, device);
1151 1151
1152 if (wait) { 1152 if (wait) {
1153 if (can_sleep && ap->device[device].class == ATA_DEV_ATAPI) 1153 if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI)
1154 msleep(150); 1154 msleep(150);
1155 ata_wait_idle(ap); 1155 ata_wait_idle(ap);
1156 } 1156 }
@@ -1346,7 +1346,8 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,
1346 int dma_dir, struct scatterlist *sg, 1346 int dma_dir, struct scatterlist *sg,
1347 unsigned int n_elem) 1347 unsigned int n_elem)
1348{ 1348{
1349 struct ata_port *ap = dev->ap; 1349 struct ata_link *link = dev->link;
1350 struct ata_port *ap = link->ap;
1350 u8 command = tf->command; 1351 u8 command = tf->command;
1351 struct ata_queued_cmd *qc; 1352 struct ata_queued_cmd *qc;
1352 unsigned int tag, preempted_tag; 1353 unsigned int tag, preempted_tag;
@@ -1386,11 +1387,11 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,
1386 qc->dev = dev; 1387 qc->dev = dev;
1387 ata_qc_reinit(qc); 1388 ata_qc_reinit(qc);
1388 1389
1389 preempted_tag = ap->active_tag; 1390 preempted_tag = link->active_tag;
1390 preempted_sactive = ap->sactive; 1391 preempted_sactive = link->sactive;
1391 preempted_qc_active = ap->qc_active; 1392 preempted_qc_active = ap->qc_active;
1392 ap->active_tag = ATA_TAG_POISON; 1393 link->active_tag = ATA_TAG_POISON;
1393 ap->sactive = 0; 1394 link->sactive = 0;
1394 ap->qc_active = 0; 1395 ap->qc_active = 0;
1395 1396
1396 /* prepare & issue qc */ 1397 /* prepare & issue qc */
@@ -1467,8 +1468,8 @@ unsigned ata_exec_internal_sg(struct ata_device *dev,
1467 err_mask = qc->err_mask; 1468 err_mask = qc->err_mask;
1468 1469
1469 ata_qc_free(qc); 1470 ata_qc_free(qc);
1470 ap->active_tag = preempted_tag; 1471 link->active_tag = preempted_tag;
1471 ap->sactive = preempted_sactive; 1472 link->sactive = preempted_sactive;
1472 ap->qc_active = preempted_qc_active; 1473 ap->qc_active = preempted_qc_active;
1473 1474
1474 /* XXX - Some LLDDs (sata_mv) disable port on command failure. 1475 /* XXX - Some LLDDs (sata_mv) disable port on command failure.
@@ -1566,7 +1567,7 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev)
1566{ 1567{
1567 /* Controller doesn't support IORDY. Probably a pointless check 1568 /* Controller doesn't support IORDY. Probably a pointless check
1568 as the caller should know this */ 1569 as the caller should know this */
1569 if (adev->ap->flags & ATA_FLAG_NO_IORDY) 1570 if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
1570 return 0; 1571 return 0;
1571 /* PIO3 and higher it is mandatory */ 1572 /* PIO3 and higher it is mandatory */
1572 if (adev->pio_mode > XFER_PIO_2) 1573 if (adev->pio_mode > XFER_PIO_2)
@@ -1622,7 +1623,7 @@ static u32 ata_pio_mask_no_iordy(const struct ata_device *adev)
1622int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, 1623int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
1623 unsigned int flags, u16 *id) 1624 unsigned int flags, u16 *id)
1624{ 1625{
1625 struct ata_port *ap = dev->ap; 1626 struct ata_port *ap = dev->link->ap;
1626 unsigned int class = *p_class; 1627 unsigned int class = *p_class;
1627 struct ata_taskfile tf; 1628 struct ata_taskfile tf;
1628 unsigned int err_mask = 0; 1629 unsigned int err_mask = 0;
@@ -1774,13 +1775,14 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
1774 1775
1775static inline u8 ata_dev_knobble(struct ata_device *dev) 1776static inline u8 ata_dev_knobble(struct ata_device *dev)
1776{ 1777{
1777 return ((dev->ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id))); 1778 struct ata_port *ap = dev->link->ap;
1779 return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
1778} 1780}
1779 1781
1780static void ata_dev_config_ncq(struct ata_device *dev, 1782static void ata_dev_config_ncq(struct ata_device *dev,
1781 char *desc, size_t desc_sz) 1783 char *desc, size_t desc_sz)
1782{ 1784{
1783 struct ata_port *ap = dev->ap; 1785 struct ata_port *ap = dev->link->ap;
1784 int hdepth = 0, ddepth = ata_id_queue_depth(dev->id); 1786 int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
1785 1787
1786 if (!ata_id_has_ncq(dev->id)) { 1788 if (!ata_id_has_ncq(dev->id)) {
@@ -1817,8 +1819,8 @@ static void ata_dev_config_ncq(struct ata_device *dev,
1817 */ 1819 */
1818int ata_dev_configure(struct ata_device *dev) 1820int ata_dev_configure(struct ata_device *dev)
1819{ 1821{
1820 struct ata_port *ap = dev->ap; 1822 struct ata_port *ap = dev->link->ap;
1821 struct ata_eh_context *ehc = &ap->eh_context; 1823 struct ata_eh_context *ehc = &dev->link->eh_context;
1822 int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; 1824 int print_info = ehc->i.flags & ATA_EHI_PRINTINFO;
1823 const u16 *id = dev->id; 1825 const u16 *id = dev->id;
1824 unsigned int xfer_mask; 1826 unsigned int xfer_mask;
@@ -2116,7 +2118,7 @@ int ata_bus_probe(struct ata_port *ap)
2116 ap->ops->phy_reset(ap); 2118 ap->ops->phy_reset(ap);
2117 2119
2118 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2120 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2119 dev = &ap->device[i]; 2121 dev = &ap->link.device[i];
2120 2122
2121 if (!(ap->flags & ATA_FLAG_DISABLED) && 2123 if (!(ap->flags & ATA_FLAG_DISABLED) &&
2122 dev->class != ATA_DEV_UNKNOWN) 2124 dev->class != ATA_DEV_UNKNOWN)
@@ -2133,14 +2135,14 @@ int ata_bus_probe(struct ata_port *ap)
2133 state is undefined. Record the mode */ 2135 state is undefined. Record the mode */
2134 2136
2135 for (i = 0; i < ATA_MAX_DEVICES; i++) 2137 for (i = 0; i < ATA_MAX_DEVICES; i++)
2136 ap->device[i].pio_mode = XFER_PIO_0; 2138 ap->link.device[i].pio_mode = XFER_PIO_0;
2137 2139
2138 /* read IDENTIFY page and configure devices. We have to do the identify 2140 /* read IDENTIFY page and configure devices. We have to do the identify
2139 specific sequence bass-ackwards so that PDIAG- is released by 2141 specific sequence bass-ackwards so that PDIAG- is released by
2140 the slave device */ 2142 the slave device */
2141 2143
2142 for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) { 2144 for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) {
2143 dev = &ap->device[i]; 2145 dev = &ap->link.device[i];
2144 2146
2145 if (tries[i]) 2147 if (tries[i])
2146 dev->class = classes[i]; 2148 dev->class = classes[i];
@@ -2162,13 +2164,13 @@ int ata_bus_probe(struct ata_port *ap)
2162 this in the normal order so that the user doesn't get confused */ 2164 this in the normal order so that the user doesn't get confused */
2163 2165
2164 for(i = 0; i < ATA_MAX_DEVICES; i++) { 2166 for(i = 0; i < ATA_MAX_DEVICES; i++) {
2165 dev = &ap->device[i]; 2167 dev = &ap->link.device[i];
2166 if (!ata_dev_enabled(dev)) 2168 if (!ata_dev_enabled(dev))
2167 continue; 2169 continue;
2168 2170
2169 ap->eh_context.i.flags |= ATA_EHI_PRINTINFO; 2171 ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO;
2170 rc = ata_dev_configure(dev); 2172 rc = ata_dev_configure(dev);
2171 ap->eh_context.i.flags &= ~ATA_EHI_PRINTINFO; 2173 ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO;
2172 if (rc) 2174 if (rc)
2173 goto fail; 2175 goto fail;
2174 } 2176 }
@@ -2179,7 +2181,7 @@ int ata_bus_probe(struct ata_port *ap)
2179 goto fail; 2181 goto fail;
2180 2182
2181 for (i = 0; i < ATA_MAX_DEVICES; i++) 2183 for (i = 0; i < ATA_MAX_DEVICES; i++)
2182 if (ata_dev_enabled(&ap->device[i])) 2184 if (ata_dev_enabled(&ap->link.device[i]))
2183 return 0; 2185 return 0;
2184 2186
2185 /* no device present, disable port */ 2187 /* no device present, disable port */
@@ -2344,8 +2346,8 @@ void sata_phy_reset(struct ata_port *ap)
2344 2346
2345struct ata_device *ata_dev_pair(struct ata_device *adev) 2347struct ata_device *ata_dev_pair(struct ata_device *adev)
2346{ 2348{
2347 struct ata_port *ap = adev->ap; 2349 struct ata_link *link = adev->link;
2348 struct ata_device *pair = &ap->device[1 - adev->devno]; 2350 struct ata_device *pair = &link->device[1 - adev->devno];
2349 if (!ata_dev_enabled(pair)) 2351 if (!ata_dev_enabled(pair))
2350 return NULL; 2352 return NULL;
2351 return pair; 2353 return pair;
@@ -2366,8 +2368,8 @@ struct ata_device *ata_dev_pair(struct ata_device *adev)
2366 2368
2367void ata_port_disable(struct ata_port *ap) 2369void ata_port_disable(struct ata_port *ap)
2368{ 2370{
2369 ap->device[0].class = ATA_DEV_NONE; 2371 ap->link.device[0].class = ATA_DEV_NONE;
2370 ap->device[1].class = ATA_DEV_NONE; 2372 ap->link.device[1].class = ATA_DEV_NONE;
2371 ap->flags |= ATA_FLAG_DISABLED; 2373 ap->flags |= ATA_FLAG_DISABLED;
2372} 2374}
2373 2375
@@ -2400,9 +2402,9 @@ int sata_down_spd_limit(struct ata_port *ap)
2400 if (rc == 0) 2402 if (rc == 0)
2401 spd = (sstatus >> 4) & 0xf; 2403 spd = (sstatus >> 4) & 0xf;
2402 else 2404 else
2403 spd = ap->sata_spd; 2405 spd = ap->link.sata_spd;
2404 2406
2405 mask = ap->sata_spd_limit; 2407 mask = ap->link.sata_spd_limit;
2406 if (mask <= 1) 2408 if (mask <= 1)
2407 return -EINVAL; 2409 return -EINVAL;
2408 2410
@@ -2422,7 +2424,7 @@ int sata_down_spd_limit(struct ata_port *ap)
2422 if (!mask) 2424 if (!mask)
2423 return -EINVAL; 2425 return -EINVAL;
2424 2426
2425 ap->sata_spd_limit = mask; 2427 ap->link.sata_spd_limit = mask;
2426 2428
2427 ata_port_printk(ap, KERN_WARNING, "limiting SATA link speed to %s\n", 2429 ata_port_printk(ap, KERN_WARNING, "limiting SATA link speed to %s\n",
2428 sata_spd_string(fls(mask))); 2430 sata_spd_string(fls(mask)));
@@ -2434,10 +2436,10 @@ static int __sata_set_spd_needed(struct ata_port *ap, u32 *scontrol)
2434{ 2436{
2435 u32 spd, limit; 2437 u32 spd, limit;
2436 2438
2437 if (ap->sata_spd_limit == UINT_MAX) 2439 if (ap->link.sata_spd_limit == UINT_MAX)
2438 limit = 0; 2440 limit = 0;
2439 else 2441 else
2440 limit = fls(ap->sata_spd_limit); 2442 limit = fls(ap->link.sata_spd_limit);
2441 2443
2442 spd = (*scontrol >> 4) & 0xf; 2444 spd = (*scontrol >> 4) & 0xf;
2443 *scontrol = (*scontrol & ~0xf0) | ((limit & 0xf) << 4); 2445 *scontrol = (*scontrol & ~0xf0) | ((limit & 0xf) << 4);
@@ -2450,7 +2452,7 @@ static int __sata_set_spd_needed(struct ata_port *ap, u32 *scontrol)
2450 * @ap: Port in question 2452 * @ap: Port in question
2451 * 2453 *
2452 * Test whether the spd limit in SControl matches 2454 * Test whether the spd limit in SControl matches
2453 * @ap->sata_spd_limit. This function is used to determine 2455 * @ap->link.sata_spd_limit. This function is used to determine
2454 * whether hardreset is necessary to apply SATA spd 2456 * whether hardreset is necessary to apply SATA spd
2455 * configuration. 2457 * configuration.
2456 * 2458 *
@@ -2749,7 +2751,7 @@ int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel)
2749 2751
2750static int ata_dev_set_mode(struct ata_device *dev) 2752static int ata_dev_set_mode(struct ata_device *dev)
2751{ 2753{
2752 struct ata_eh_context *ehc = &dev->ap->eh_context; 2754 struct ata_eh_context *ehc = &dev->link->eh_context;
2753 unsigned int err_mask; 2755 unsigned int err_mask;
2754 int rc; 2756 int rc;
2755 2757
@@ -2809,7 +2811,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
2809 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2811 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2810 unsigned int pio_mask, dma_mask; 2812 unsigned int pio_mask, dma_mask;
2811 2813
2812 dev = &ap->device[i]; 2814 dev = &ap->link.device[i];
2813 2815
2814 if (!ata_dev_enabled(dev)) 2816 if (!ata_dev_enabled(dev))
2815 continue; 2817 continue;
@@ -2830,7 +2832,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
2830 2832
2831 /* step 2: always set host PIO timings */ 2833 /* step 2: always set host PIO timings */
2832 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2834 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2833 dev = &ap->device[i]; 2835 dev = &ap->link.device[i];
2834 if (!ata_dev_enabled(dev)) 2836 if (!ata_dev_enabled(dev))
2835 continue; 2837 continue;
2836 2838
@@ -2848,7 +2850,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
2848 2850
2849 /* step 3: set host DMA timings */ 2851 /* step 3: set host DMA timings */
2850 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2852 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2851 dev = &ap->device[i]; 2853 dev = &ap->link.device[i];
2852 2854
2853 if (!ata_dev_enabled(dev) || !dev->dma_mode) 2855 if (!ata_dev_enabled(dev) || !dev->dma_mode)
2854 continue; 2856 continue;
@@ -2861,7 +2863,7 @@ int ata_do_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
2861 2863
2862 /* step 4: update devices' xfer mode */ 2864 /* step 4: update devices' xfer mode */
2863 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2865 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2864 dev = &ap->device[i]; 2866 dev = &ap->link.device[i];
2865 2867
2866 /* don't update suspended devices' xfer mode */ 2868 /* don't update suspended devices' xfer mode */
2867 if (!ata_dev_enabled(dev)) 2869 if (!ata_dev_enabled(dev))
@@ -3142,6 +3144,7 @@ static int ata_bus_softreset(struct ata_port *ap, unsigned int devmask,
3142 3144
3143void ata_bus_reset(struct ata_port *ap) 3145void ata_bus_reset(struct ata_port *ap)
3144{ 3146{
3147 struct ata_device *device = ap->link.device;
3145 struct ata_ioports *ioaddr = &ap->ioaddr; 3148 struct ata_ioports *ioaddr = &ap->ioaddr;
3146 unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS; 3149 unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
3147 u8 err; 3150 u8 err;
@@ -3177,19 +3180,19 @@ void ata_bus_reset(struct ata_port *ap)
3177 /* 3180 /*
3178 * determine by signature whether we have ATA or ATAPI devices 3181 * determine by signature whether we have ATA or ATAPI devices
3179 */ 3182 */
3180 ap->device[0].class = ata_dev_try_classify(ap, 0, &err); 3183 device[0].class = ata_dev_try_classify(ap, 0, &err);
3181 if ((slave_possible) && (err != 0x81)) 3184 if ((slave_possible) && (err != 0x81))
3182 ap->device[1].class = ata_dev_try_classify(ap, 1, &err); 3185 device[1].class = ata_dev_try_classify(ap, 1, &err);
3183 3186
3184 /* is double-select really necessary? */ 3187 /* is double-select really necessary? */
3185 if (ap->device[1].class != ATA_DEV_NONE) 3188 if (device[1].class != ATA_DEV_NONE)
3186 ap->ops->dev_select(ap, 1); 3189 ap->ops->dev_select(ap, 1);
3187 if (ap->device[0].class != ATA_DEV_NONE) 3190 if (device[0].class != ATA_DEV_NONE)
3188 ap->ops->dev_select(ap, 0); 3191 ap->ops->dev_select(ap, 0);
3189 3192
3190 /* if no devices were detected, disable this port */ 3193 /* if no devices were detected, disable this port */
3191 if ((ap->device[0].class == ATA_DEV_NONE) && 3194 if ((device[0].class == ATA_DEV_NONE) &&
3192 (ap->device[1].class == ATA_DEV_NONE)) 3195 (device[1].class == ATA_DEV_NONE))
3193 goto err_out; 3196 goto err_out;
3194 3197
3195 if (ap->flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST)) { 3198 if (ap->flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST)) {
@@ -3331,7 +3334,7 @@ int sata_phy_resume(struct ata_port *ap, const unsigned long *params,
3331 */ 3334 */
3332int ata_std_prereset(struct ata_port *ap, unsigned long deadline) 3335int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
3333{ 3336{
3334 struct ata_eh_context *ehc = &ap->eh_context; 3337 struct ata_eh_context *ehc = &ap->link.eh_context;
3335 const unsigned long *timing = sata_ehc_deb_timing(ehc); 3338 const unsigned long *timing = sata_ehc_deb_timing(ehc);
3336 int rc; 3339 int rc;
3337 3340
@@ -3503,7 +3506,7 @@ int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
3503int sata_std_hardreset(struct ata_port *ap, unsigned int *class, 3506int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
3504 unsigned long deadline) 3507 unsigned long deadline)
3505{ 3508{
3506 const unsigned long *timing = sata_ehc_deb_timing(&ap->eh_context); 3509 const unsigned long *timing = sata_ehc_deb_timing(&ap->link.eh_context);
3507 int rc; 3510 int rc;
3508 3511
3509 DPRINTK("ENTER\n"); 3512 DPRINTK("ENTER\n");
@@ -3652,7 +3655,7 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
3652int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) 3655int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags)
3653{ 3656{
3654 unsigned int class = dev->class; 3657 unsigned int class = dev->class;
3655 u16 *id = (void *)dev->ap->sector_buf; 3658 u16 *id = (void *)dev->link->ap->sector_buf;
3656 int rc; 3659 int rc;
3657 3660
3658 /* read ID data */ 3661 /* read ID data */
@@ -3837,7 +3840,7 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
3837 * DMA blacklist those ATAPI devices with CDB-intr (and use PIO) 3840 * DMA blacklist those ATAPI devices with CDB-intr (and use PIO)
3838 * if the LLDD handles only interrupts in the HSM_ST_LAST state. 3841 * if the LLDD handles only interrupts in the HSM_ST_LAST state.
3839 */ 3842 */
3840 if ((dev->ap->flags & ATA_FLAG_PIO_POLLING) && 3843 if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) &&
3841 (dev->flags & ATA_DFLAG_CDB_INTR)) 3844 (dev->flags & ATA_DFLAG_CDB_INTR))
3842 return 1; 3845 return 1;
3843 return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0; 3846 return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0;
@@ -3857,7 +3860,8 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
3857 */ 3860 */
3858static void ata_dev_xfermask(struct ata_device *dev) 3861static void ata_dev_xfermask(struct ata_device *dev)
3859{ 3862{
3860 struct ata_port *ap = dev->ap; 3863 struct ata_link *link = dev->link;
3864 struct ata_port *ap = link->ap;
3861 struct ata_host *host = ap->host; 3865 struct ata_host *host = ap->host;
3862 unsigned long xfer_mask; 3866 unsigned long xfer_mask;
3863 3867
@@ -4482,7 +4486,7 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words)
4482void ata_data_xfer(struct ata_device *adev, unsigned char *buf, 4486void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
4483 unsigned int buflen, int write_data) 4487 unsigned int buflen, int write_data)
4484{ 4488{
4485 struct ata_port *ap = adev->ap; 4489 struct ata_port *ap = adev->link->ap;
4486 unsigned int words = buflen >> 1; 4490 unsigned int words = buflen >> 1;
4487 4491
4488 /* Transfer multiple of 2 bytes */ 4492 /* Transfer multiple of 2 bytes */
@@ -5188,7 +5192,7 @@ static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
5188 5192
5189struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev) 5193struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev)
5190{ 5194{
5191 struct ata_port *ap = dev->ap; 5195 struct ata_port *ap = dev->link->ap;
5192 struct ata_queued_cmd *qc; 5196 struct ata_queued_cmd *qc;
5193 5197
5194 qc = ata_qc_new(ap); 5198 qc = ata_qc_new(ap);
@@ -5231,6 +5235,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
5231void __ata_qc_complete(struct ata_queued_cmd *qc) 5235void __ata_qc_complete(struct ata_queued_cmd *qc)
5232{ 5236{
5233 struct ata_port *ap = qc->ap; 5237 struct ata_port *ap = qc->ap;
5238 struct ata_link *link = qc->dev->link;
5234 5239
5235 WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */ 5240 WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
5236 WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE)); 5241 WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
@@ -5240,9 +5245,9 @@ void __ata_qc_complete(struct ata_queued_cmd *qc)
5240 5245
5241 /* command should be marked inactive atomically with qc completion */ 5246 /* command should be marked inactive atomically with qc completion */
5242 if (qc->tf.protocol == ATA_PROT_NCQ) 5247 if (qc->tf.protocol == ATA_PROT_NCQ)
5243 ap->sactive &= ~(1 << qc->tag); 5248 link->sactive &= ~(1 << qc->tag);
5244 else 5249 else
5245 ap->active_tag = ATA_TAG_POISON; 5250 link->active_tag = ATA_TAG_POISON;
5246 5251
5247 /* atapi: mark qc as inactive to prevent the interrupt handler 5252 /* atapi: mark qc as inactive to prevent the interrupt handler
5248 * from completing the command twice later, before the error handler 5253 * from completing the command twice later, before the error handler
@@ -5411,19 +5416,20 @@ static inline int ata_should_dma_map(struct ata_queued_cmd *qc)
5411void ata_qc_issue(struct ata_queued_cmd *qc) 5416void ata_qc_issue(struct ata_queued_cmd *qc)
5412{ 5417{
5413 struct ata_port *ap = qc->ap; 5418 struct ata_port *ap = qc->ap;
5419 struct ata_link *link = qc->dev->link;
5414 5420
5415 /* Make sure only one non-NCQ command is outstanding. The 5421 /* Make sure only one non-NCQ command is outstanding. The
5416 * check is skipped for old EH because it reuses active qc to 5422 * check is skipped for old EH because it reuses active qc to
5417 * request ATAPI sense. 5423 * request ATAPI sense.
5418 */ 5424 */
5419 WARN_ON(ap->ops->error_handler && ata_tag_valid(ap->active_tag)); 5425 WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
5420 5426
5421 if (qc->tf.protocol == ATA_PROT_NCQ) { 5427 if (qc->tf.protocol == ATA_PROT_NCQ) {
5422 WARN_ON(ap->sactive & (1 << qc->tag)); 5428 WARN_ON(link->sactive & (1 << qc->tag));
5423 ap->sactive |= 1 << qc->tag; 5429 link->sactive |= 1 << qc->tag;
5424 } else { 5430 } else {
5425 WARN_ON(ap->sactive); 5431 WARN_ON(link->sactive);
5426 ap->active_tag = qc->tag; 5432 link->active_tag = qc->tag;
5427 } 5433 }
5428 5434
5429 qc->flags |= ATA_QCFLAG_ACTIVE; 5435 qc->flags |= ATA_QCFLAG_ACTIVE;
@@ -5606,7 +5612,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc)
5606inline unsigned int ata_host_intr (struct ata_port *ap, 5612inline unsigned int ata_host_intr (struct ata_port *ap,
5607 struct ata_queued_cmd *qc) 5613 struct ata_queued_cmd *qc)
5608{ 5614{
5609 struct ata_eh_info *ehi = &ap->eh_info; 5615 struct ata_eh_info *ehi = &ap->link.eh_info;
5610 u8 status, host_stat = 0; 5616 u8 status, host_stat = 0;
5611 5617
5612 VPRINTK("ata%u: protocol %d task_state %d\n", 5618 VPRINTK("ata%u: protocol %d task_state %d\n",
@@ -5721,7 +5727,7 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance)
5721 !(ap->flags & ATA_FLAG_DISABLED)) { 5727 !(ap->flags & ATA_FLAG_DISABLED)) {
5722 struct ata_queued_cmd *qc; 5728 struct ata_queued_cmd *qc;
5723 5729
5724 qc = ata_qc_from_tag(ap, ap->active_tag); 5730 qc = ata_qc_from_tag(ap, ap->link.active_tag);
5725 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) && 5731 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
5726 (qc->flags & ATA_QCFLAG_ACTIVE)) 5732 (qc->flags & ATA_QCFLAG_ACTIVE))
5727 handled |= ata_host_intr(ap, qc); 5733 handled |= ata_host_intr(ap, qc);
@@ -5921,8 +5927,8 @@ static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg,
5921 } 5927 }
5922 5928
5923 ap->pflags |= ATA_PFLAG_PM_PENDING; 5929 ap->pflags |= ATA_PFLAG_PM_PENDING;
5924 ap->eh_info.action |= action; 5930 ap->link.eh_info.action |= action;
5925 ap->eh_info.flags |= ehi_flags; 5931 ap->link.eh_info.flags |= ehi_flags;
5926 5932
5927 ata_port_schedule_eh(ap); 5933 ata_port_schedule_eh(ap);
5928 5934
@@ -6026,12 +6032,13 @@ int ata_port_start(struct ata_port *ap)
6026 */ 6032 */
6027void ata_dev_init(struct ata_device *dev) 6033void ata_dev_init(struct ata_device *dev)
6028{ 6034{
6029 struct ata_port *ap = dev->ap; 6035 struct ata_link *link = dev->link;
6036 struct ata_port *ap = link->ap;
6030 unsigned long flags; 6037 unsigned long flags;
6031 6038
6032 /* SATA spd limit is bound to the first device */ 6039 /* SATA spd limit is bound to the first device */
6033 ap->sata_spd_limit = ap->hw_sata_spd_limit; 6040 link->sata_spd_limit = link->hw_sata_spd_limit;
6034 ap->sata_spd = 0; 6041 link->sata_spd = 0;
6035 6042
6036 /* High bits of dev->flags are used to record warm plug 6043 /* High bits of dev->flags are used to record warm plug
6037 * requests which occur asynchronously. Synchronize using 6044 * requests which occur asynchronously. Synchronize using
@@ -6080,8 +6087,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
6080 ap->host = host; 6087 ap->host = host;
6081 ap->dev = host->dev; 6088 ap->dev = host->dev;
6082 6089
6083 ap->hw_sata_spd_limit = UINT_MAX; 6090 ap->link.hw_sata_spd_limit = UINT_MAX;
6084 ap->active_tag = ATA_TAG_POISON; 6091 ap->link.active_tag = ATA_TAG_POISON;
6085 ap->last_ctl = 0xFF; 6092 ap->last_ctl = 0xFF;
6086 6093
6087#if defined(ATA_VERBOSE_DEBUG) 6094#if defined(ATA_VERBOSE_DEBUG)
@@ -6104,9 +6111,11 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
6104 6111
6105 ap->cbl = ATA_CBL_NONE; 6112 ap->cbl = ATA_CBL_NONE;
6106 6113
6114 ap->link.ap = ap;
6115
6107 for (i = 0; i < ATA_MAX_DEVICES; i++) { 6116 for (i = 0; i < ATA_MAX_DEVICES; i++) {
6108 struct ata_device *dev = &ap->device[i]; 6117 struct ata_device *dev = &ap->link.device[i];
6109 dev->ap = ap; 6118 dev->link = &ap->link;
6110 dev->devno = i; 6119 dev->devno = i;
6111 ata_dev_init(dev); 6120 ata_dev_init(dev);
6112 } 6121 }
@@ -6402,9 +6411,9 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
6402 if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) { 6411 if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) {
6403 int spd = (scontrol >> 4) & 0xf; 6412 int spd = (scontrol >> 4) & 0xf;
6404 if (spd) 6413 if (spd)
6405 ap->hw_sata_spd_limit &= (1 << spd) - 1; 6414 ap->link.hw_sata_spd_limit &= (1 << spd) - 1;
6406 } 6415 }
6407 ap->sata_spd_limit = ap->hw_sata_spd_limit; 6416 ap->link.sata_spd_limit = ap->link.hw_sata_spd_limit;
6408 6417
6409 /* report the secondary IRQ for second channel legacy */ 6418 /* report the secondary IRQ for second channel legacy */
6410 irq_line = host->irq; 6419 irq_line = host->irq;
@@ -6436,7 +6445,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
6436 6445
6437 /* probe */ 6446 /* probe */
6438 if (ap->ops->error_handler) { 6447 if (ap->ops->error_handler) {
6439 struct ata_eh_info *ehi = &ap->eh_info; 6448 struct ata_eh_info *ehi = &ap->link.eh_info;
6440 unsigned long flags; 6449 unsigned long flags;
6441 6450
6442 ata_port_probe(ap); 6451 ata_port_probe(ap);
@@ -6560,7 +6569,7 @@ void ata_port_detach(struct ata_port *ap)
6560 spin_lock_irqsave(ap->lock, flags); 6569 spin_lock_irqsave(ap->lock, flags);
6561 6570
6562 for (i = 0; i < ATA_MAX_DEVICES; i++) 6571 for (i = 0; i < ATA_MAX_DEVICES; i++)
6563 ata_dev_disable(&ap->device[i]); 6572 ata_dev_disable(&ap->link.device[i]);
6564 6573
6565 spin_unlock_irqrestore(ap->lock, flags); 6574 spin_unlock_irqrestore(ap->lock, flags);
6566 6575
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ac6ceed4bb60..e2681f56ed44 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -195,7 +195,7 @@ static int ata_ering_map(struct ata_ering *ering,
195 195
196static unsigned int ata_eh_dev_action(struct ata_device *dev) 196static unsigned int ata_eh_dev_action(struct ata_device *dev)
197{ 197{
198 struct ata_eh_context *ehc = &dev->ap->eh_context; 198 struct ata_eh_context *ehc = &dev->link->eh_context;
199 199
200 return ehc->i.action | ehc->i.dev_action[dev->devno]; 200 return ehc->i.action | ehc->i.dev_action[dev->devno];
201} 201}
@@ -261,7 +261,7 @@ enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
261 261
262 ret = EH_HANDLED; 262 ret = EH_HANDLED;
263 spin_lock_irqsave(ap->lock, flags); 263 spin_lock_irqsave(ap->lock, flags);
264 qc = ata_qc_from_tag(ap, ap->active_tag); 264 qc = ata_qc_from_tag(ap, ap->link.active_tag);
265 if (qc) { 265 if (qc) {
266 WARN_ON(qc->scsicmd != cmd); 266 WARN_ON(qc->scsicmd != cmd);
267 qc->flags |= ATA_QCFLAG_EH_SCHEDULED; 267 qc->flags |= ATA_QCFLAG_EH_SCHEDULED;
@@ -371,9 +371,9 @@ void ata_scsi_error(struct Scsi_Host *host)
371 /* fetch & clear EH info */ 371 /* fetch & clear EH info */
372 spin_lock_irqsave(ap->lock, flags); 372 spin_lock_irqsave(ap->lock, flags);
373 373
374 memset(&ap->eh_context, 0, sizeof(ap->eh_context)); 374 memset(&ap->link.eh_context, 0, sizeof(ap->link.eh_context));
375 ap->eh_context.i = ap->eh_info; 375 ap->link.eh_context.i = ap->link.eh_info;
376 memset(&ap->eh_info, 0, sizeof(ap->eh_info)); 376 memset(&ap->link.eh_info, 0, sizeof(ap->link.eh_info));
377 377
378 ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS; 378 ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
379 ap->pflags &= ~ATA_PFLAG_EH_PENDING; 379 ap->pflags &= ~ATA_PFLAG_EH_PENDING;
@@ -409,7 +409,7 @@ void ata_scsi_error(struct Scsi_Host *host)
409 } 409 }
410 410
411 /* this run is complete, make sure EH info is clear */ 411 /* this run is complete, make sure EH info is clear */
412 memset(&ap->eh_info, 0, sizeof(ap->eh_info)); 412 memset(&ap->link.eh_info, 0, sizeof(ap->link.eh_info));
413 413
414 /* Clear host_eh_scheduled while holding ap->lock such 414 /* Clear host_eh_scheduled while holding ap->lock such
415 * that if exception occurs after this point but 415 * that if exception occurs after this point but
@@ -420,7 +420,7 @@ void ata_scsi_error(struct Scsi_Host *host)
420 420
421 spin_unlock_irqrestore(ap->lock, flags); 421 spin_unlock_irqrestore(ap->lock, flags);
422 } else { 422 } else {
423 WARN_ON(ata_qc_from_tag(ap, ap->active_tag) == NULL); 423 WARN_ON(ata_qc_from_tag(ap, ap->link.active_tag) == NULL);
424 ap->ops->eng_timeout(ap); 424 ap->ops->eng_timeout(ap);
425 } 425 }
426 426
@@ -575,7 +575,7 @@ void ata_eng_timeout(struct ata_port *ap)
575{ 575{
576 DPRINTK("ENTER\n"); 576 DPRINTK("ENTER\n");
577 577
578 ata_qc_timeout(ata_qc_from_tag(ap, ap->active_tag)); 578 ata_qc_timeout(ata_qc_from_tag(ap, ap->link.active_tag));
579 579
580 DPRINTK("EXIT\n"); 580 DPRINTK("EXIT\n");
581} 581}
@@ -922,7 +922,7 @@ void ata_eh_qc_retry(struct ata_queued_cmd *qc)
922 */ 922 */
923static void ata_eh_detach_dev(struct ata_device *dev) 923static void ata_eh_detach_dev(struct ata_device *dev)
924{ 924{
925 struct ata_port *ap = dev->ap; 925 struct ata_port *ap = dev->link->ap;
926 unsigned long flags; 926 unsigned long flags;
927 927
928 ata_dev_disable(dev); 928 ata_dev_disable(dev);
@@ -937,8 +937,8 @@ static void ata_eh_detach_dev(struct ata_device *dev)
937 } 937 }
938 938
939 /* clear per-dev EH actions */ 939 /* clear per-dev EH actions */
940 ata_eh_clear_action(dev, &ap->eh_info, ATA_EH_PERDEV_MASK); 940 ata_eh_clear_action(dev, &dev->link->eh_info, ATA_EH_PERDEV_MASK);
941 ata_eh_clear_action(dev, &ap->eh_context.i, ATA_EH_PERDEV_MASK); 941 ata_eh_clear_action(dev, &dev->link->eh_context.i, ATA_EH_PERDEV_MASK);
942 942
943 spin_unlock_irqrestore(ap->lock, flags); 943 spin_unlock_irqrestore(ap->lock, flags);
944} 944}
@@ -950,8 +950,8 @@ static void ata_eh_detach_dev(struct ata_device *dev)
950 * @action: action about to be performed 950 * @action: action about to be performed
951 * 951 *
952 * Called just before performing EH actions to clear related bits 952 * Called just before performing EH actions to clear related bits
953 * in @ap->eh_info such that eh actions are not unnecessarily 953 * in @ap->link.eh_info such that eh actions are not
954 * repeated. 954 * unnecessarily repeated.
955 * 955 *
956 * LOCKING: 956 * LOCKING:
957 * None. 957 * None.
@@ -960,8 +960,8 @@ static void ata_eh_about_to_do(struct ata_port *ap, struct ata_device *dev,
960 unsigned int action) 960 unsigned int action)
961{ 961{
962 unsigned long flags; 962 unsigned long flags;
963 struct ata_eh_info *ehi = &ap->eh_info; 963 struct ata_eh_info *ehi = &ap->link.eh_info;
964 struct ata_eh_context *ehc = &ap->eh_context; 964 struct ata_eh_context *ehc = &ap->link.eh_context;
965 965
966 spin_lock_irqsave(ap->lock, flags); 966 spin_lock_irqsave(ap->lock, flags);
967 967
@@ -993,7 +993,7 @@ static void ata_eh_about_to_do(struct ata_port *ap, struct ata_device *dev,
993 * @action: action just completed 993 * @action: action just completed
994 * 994 *
995 * Called right after performing EH actions to clear related bits 995 * Called right after performing EH actions to clear related bits
996 * in @ap->eh_context. 996 * in @ap->link.eh_context.
997 * 997 *
998 * LOCKING: 998 * LOCKING:
999 * None. 999 * None.
@@ -1001,13 +1001,15 @@ static void ata_eh_about_to_do(struct ata_port *ap, struct ata_device *dev,
1001static void ata_eh_done(struct ata_port *ap, struct ata_device *dev, 1001static void ata_eh_done(struct ata_port *ap, struct ata_device *dev,
1002 unsigned int action) 1002 unsigned int action)
1003{ 1003{
1004 struct ata_eh_context *ehc = &ap->link.eh_context;
1005
1004 /* if reset is complete, clear all reset actions & reset modifier */ 1006 /* if reset is complete, clear all reset actions & reset modifier */
1005 if (action & ATA_EH_RESET_MASK) { 1007 if (action & ATA_EH_RESET_MASK) {
1006 action |= ATA_EH_RESET_MASK; 1008 action |= ATA_EH_RESET_MASK;
1007 ap->eh_context.i.flags &= ~ATA_EHI_RESET_MODIFIER_MASK; 1009 ehc->i.flags &= ~ATA_EHI_RESET_MODIFIER_MASK;
1008 } 1010 }
1009 1011
1010 ata_eh_clear_action(dev, &ap->eh_context.i, action); 1012 ata_eh_clear_action(dev, &ehc->i, action);
1011} 1013}
1012 1014
1013/** 1015/**
@@ -1101,7 +1103,7 @@ static unsigned int ata_read_log_page(struct ata_device *dev,
1101static int ata_eh_read_log_10h(struct ata_device *dev, 1103static int ata_eh_read_log_10h(struct ata_device *dev,
1102 int *tag, struct ata_taskfile *tf) 1104 int *tag, struct ata_taskfile *tf)
1103{ 1105{
1104 u8 *buf = dev->ap->sector_buf; 1106 u8 *buf = dev->link->ap->sector_buf;
1105 unsigned int err_mask; 1107 unsigned int err_mask;
1106 u8 csum; 1108 u8 csum;
1107 int i; 1109 int i;
@@ -1155,7 +1157,7 @@ static unsigned int atapi_eh_request_sense(struct ata_queued_cmd *qc)
1155{ 1157{
1156 struct ata_device *dev = qc->dev; 1158 struct ata_device *dev = qc->dev;
1157 unsigned char *sense_buf = qc->scsicmd->sense_buffer; 1159 unsigned char *sense_buf = qc->scsicmd->sense_buffer;
1158 struct ata_port *ap = dev->ap; 1160 struct ata_port *ap = dev->link->ap;
1159 struct ata_taskfile tf; 1161 struct ata_taskfile tf;
1160 u8 cdb[ATAPI_CDB_LEN]; 1162 u8 cdb[ATAPI_CDB_LEN];
1161 1163
@@ -1206,7 +1208,7 @@ static unsigned int atapi_eh_request_sense(struct ata_queued_cmd *qc)
1206 */ 1208 */
1207static void ata_eh_analyze_serror(struct ata_port *ap) 1209static void ata_eh_analyze_serror(struct ata_port *ap)
1208{ 1210{
1209 struct ata_eh_context *ehc = &ap->eh_context; 1211 struct ata_eh_context *ehc = &ap->link.eh_context;
1210 u32 serror = ehc->i.serror; 1212 u32 serror = ehc->i.serror;
1211 unsigned int err_mask = 0, action = 0; 1213 unsigned int err_mask = 0, action = 0;
1212 1214
@@ -1248,8 +1250,8 @@ static void ata_eh_analyze_serror(struct ata_port *ap)
1248 */ 1250 */
1249static void ata_eh_analyze_ncq_error(struct ata_port *ap) 1251static void ata_eh_analyze_ncq_error(struct ata_port *ap)
1250{ 1252{
1251 struct ata_eh_context *ehc = &ap->eh_context; 1253 struct ata_eh_context *ehc = &ap->link.eh_context;
1252 struct ata_device *dev = ap->device; 1254 struct ata_device *dev = ap->link.device;
1253 struct ata_queued_cmd *qc; 1255 struct ata_queued_cmd *qc;
1254 struct ata_taskfile tf; 1256 struct ata_taskfile tf;
1255 int tag, rc; 1257 int tag, rc;
@@ -1259,7 +1261,7 @@ static void ata_eh_analyze_ncq_error(struct ata_port *ap)
1259 return; 1261 return;
1260 1262
1261 /* is it NCQ device error? */ 1263 /* is it NCQ device error? */
1262 if (!ap->sactive || !(ehc->i.err_mask & AC_ERR_DEV)) 1264 if (!ap->link.sactive || !(ehc->i.err_mask & AC_ERR_DEV))
1263 return; 1265 return;
1264 1266
1265 /* has LLDD analyzed already? */ 1267 /* has LLDD analyzed already? */
@@ -1281,7 +1283,7 @@ static void ata_eh_analyze_ncq_error(struct ata_port *ap)
1281 return; 1283 return;
1282 } 1284 }
1283 1285
1284 if (!(ap->sactive & (1 << tag))) { 1286 if (!(ap->link.sactive & (1 << tag))) {
1285 ata_port_printk(ap, KERN_ERR, "log page 10h reported " 1287 ata_port_printk(ap, KERN_ERR, "log page 10h reported "
1286 "inactive tag %d\n", tag); 1288 "inactive tag %d\n", tag);
1287 return; 1289 return;
@@ -1497,7 +1499,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io,
1497 /* speed down? */ 1499 /* speed down? */
1498 if (verdict & ATA_EH_SPDN_SPEED_DOWN) { 1500 if (verdict & ATA_EH_SPDN_SPEED_DOWN) {
1499 /* speed down SATA link speed if possible */ 1501 /* speed down SATA link speed if possible */
1500 if (sata_down_spd_limit(dev->ap) == 0) { 1502 if (sata_down_spd_limit(dev->link->ap) == 0) {
1501 action |= ATA_EH_HARDRESET; 1503 action |= ATA_EH_HARDRESET;
1502 goto done; 1504 goto done;
1503 } 1505 }
@@ -1528,7 +1530,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io,
1528 * SATA. Consider it only for PATA. 1530 * SATA. Consider it only for PATA.
1529 */ 1531 */
1530 if ((verdict & ATA_EH_SPDN_FALLBACK_TO_PIO) && (dev->spdn_cnt >= 2) && 1532 if ((verdict & ATA_EH_SPDN_FALLBACK_TO_PIO) && (dev->spdn_cnt >= 2) &&
1531 (dev->ap->cbl != ATA_CBL_SATA) && 1533 (dev->link->ap->cbl != ATA_CBL_SATA) &&
1532 (dev->xfer_shift != ATA_SHIFT_PIO)) { 1534 (dev->xfer_shift != ATA_SHIFT_PIO)) {
1533 if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) { 1535 if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) {
1534 dev->spdn_cnt = 0; 1536 dev->spdn_cnt = 0;
@@ -1557,7 +1559,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io,
1557 */ 1559 */
1558static void ata_eh_autopsy(struct ata_port *ap) 1560static void ata_eh_autopsy(struct ata_port *ap)
1559{ 1561{
1560 struct ata_eh_context *ehc = &ap->eh_context; 1562 struct ata_eh_context *ehc = &ap->link.eh_context;
1561 unsigned int all_err_mask = 0; 1563 unsigned int all_err_mask = 0;
1562 int tag, is_io = 0; 1564 int tag, is_io = 0;
1563 u32 serror; 1565 u32 serror;
@@ -1656,7 +1658,7 @@ static void ata_eh_autopsy(struct ata_port *ap)
1656 */ 1658 */
1657static void ata_eh_report(struct ata_port *ap) 1659static void ata_eh_report(struct ata_port *ap)
1658{ 1660{
1659 struct ata_eh_context *ehc = &ap->eh_context; 1661 struct ata_eh_context *ehc = &ap->link.eh_context;
1660 const char *frozen, *desc; 1662 const char *frozen, *desc;
1661 int tag, nr_failed = 0; 1663 int tag, nr_failed = 0;
1662 1664
@@ -1685,15 +1687,15 @@ static void ata_eh_report(struct ata_port *ap)
1685 if (ehc->i.dev) { 1687 if (ehc->i.dev) {
1686 ata_dev_printk(ehc->i.dev, KERN_ERR, "exception Emask 0x%x " 1688 ata_dev_printk(ehc->i.dev, KERN_ERR, "exception Emask 0x%x "
1687 "SAct 0x%x SErr 0x%x action 0x%x%s\n", 1689 "SAct 0x%x SErr 0x%x action 0x%x%s\n",
1688 ehc->i.err_mask, ap->sactive, ehc->i.serror, 1690 ehc->i.err_mask, ap->link.sactive,
1689 ehc->i.action, frozen); 1691 ehc->i.serror, ehc->i.action, frozen);
1690 if (desc) 1692 if (desc)
1691 ata_dev_printk(ehc->i.dev, KERN_ERR, "%s\n", desc); 1693 ata_dev_printk(ehc->i.dev, KERN_ERR, "%s\n", desc);
1692 } else { 1694 } else {
1693 ata_port_printk(ap, KERN_ERR, "exception Emask 0x%x " 1695 ata_port_printk(ap, KERN_ERR, "exception Emask 0x%x "
1694 "SAct 0x%x SErr 0x%x action 0x%x%s\n", 1696 "SAct 0x%x SErr 0x%x action 0x%x%s\n",
1695 ehc->i.err_mask, ap->sactive, ehc->i.serror, 1697 ehc->i.err_mask, ap->link.sactive,
1696 ehc->i.action, frozen); 1698 ehc->i.serror, ehc->i.action, frozen);
1697 if (desc) 1699 if (desc)
1698 ata_port_printk(ap, KERN_ERR, "%s\n", desc); 1700 ata_port_printk(ap, KERN_ERR, "%s\n", desc);
1699 } 1701 }
@@ -1775,7 +1777,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
1775 ata_prereset_fn_t prereset, ata_reset_fn_t softreset, 1777 ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
1776 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset) 1778 ata_reset_fn_t hardreset, ata_postreset_fn_t postreset)
1777{ 1779{
1778 struct ata_eh_context *ehc = &ap->eh_context; 1780 struct ata_eh_context *ehc = &ap->link.eh_context;
1779 unsigned int *classes = ehc->classes; 1781 unsigned int *classes = ehc->classes;
1780 int verbose = !(ehc->i.flags & ATA_EHI_QUIET); 1782 int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
1781 int try = 0; 1783 int try = 0;
@@ -1804,7 +1806,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
1804 if (rc == -ENOENT) { 1806 if (rc == -ENOENT) {
1805 ata_port_printk(ap, KERN_DEBUG, 1807 ata_port_printk(ap, KERN_DEBUG,
1806 "port disabled. ignoring.\n"); 1808 "port disabled. ignoring.\n");
1807 ap->eh_context.i.action &= ~ATA_EH_RESET_MASK; 1809 ehc->i.action &= ~ATA_EH_RESET_MASK;
1808 1810
1809 for (i = 0; i < ATA_MAX_DEVICES; i++) 1811 for (i = 0; i < ATA_MAX_DEVICES; i++)
1810 classes[i] = ATA_DEV_NONE; 1812 classes[i] = ATA_DEV_NONE;
@@ -1907,11 +1909,11 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
1907 * controller state is undefined. Record the mode. 1909 * controller state is undefined. Record the mode.
1908 */ 1910 */
1909 for (i = 0; i < ATA_MAX_DEVICES; i++) 1911 for (i = 0; i < ATA_MAX_DEVICES; i++)
1910 ap->device[i].pio_mode = XFER_PIO_0; 1912 ap->link.device[i].pio_mode = XFER_PIO_0;
1911 1913
1912 /* record current link speed */ 1914 /* record current link speed */
1913 if (sata_scr_read(ap, SCR_STATUS, &sstatus) == 0) 1915 if (sata_scr_read(ap, SCR_STATUS, &sstatus) == 0)
1914 ap->sata_spd = (sstatus >> 4) & 0xf; 1916 ap->link.sata_spd = (sstatus >> 4) & 0xf;
1915 1917
1916 if (postreset) 1918 if (postreset)
1917 postreset(ap, classes); 1919 postreset(ap, classes);
@@ -1929,7 +1931,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
1929static int ata_eh_revalidate_and_attach(struct ata_port *ap, 1931static int ata_eh_revalidate_and_attach(struct ata_port *ap,
1930 struct ata_device **r_failed_dev) 1932 struct ata_device **r_failed_dev)
1931{ 1933{
1932 struct ata_eh_context *ehc = &ap->eh_context; 1934 struct ata_eh_context *ehc = &ap->link.eh_context;
1933 struct ata_device *dev; 1935 struct ata_device *dev;
1934 unsigned int new_mask = 0; 1936 unsigned int new_mask = 0;
1935 unsigned long flags; 1937 unsigned long flags;
@@ -1944,7 +1946,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
1944 for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) { 1946 for (i = ATA_MAX_DEVICES - 1; i >= 0; i--) {
1945 unsigned int action, readid_flags = 0; 1947 unsigned int action, readid_flags = 0;
1946 1948
1947 dev = &ap->device[i]; 1949 dev = &ap->link.device[i];
1948 action = ata_eh_dev_action(dev); 1950 action = ata_eh_dev_action(dev);
1949 1951
1950 if (ehc->i.flags & ATA_EHI_DID_RESET) 1952 if (ehc->i.flags & ATA_EHI_DID_RESET)
@@ -2004,7 +2006,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
2004 * device detection messages backwards. 2006 * device detection messages backwards.
2005 */ 2007 */
2006 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2008 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2007 dev = &ap->device[i]; 2009 dev = &ap->link.device[i];
2008 2010
2009 if (!(new_mask & (1 << i))) 2011 if (!(new_mask & (1 << i)))
2010 continue; 2012 continue;
@@ -2036,7 +2038,7 @@ static int ata_port_nr_enabled(struct ata_port *ap)
2036 int i, cnt = 0; 2038 int i, cnt = 0;
2037 2039
2038 for (i = 0; i < ATA_MAX_DEVICES; i++) 2040 for (i = 0; i < ATA_MAX_DEVICES; i++)
2039 if (ata_dev_enabled(&ap->device[i])) 2041 if (ata_dev_enabled(&ap->link.device[i]))
2040 cnt++; 2042 cnt++;
2041 return cnt; 2043 return cnt;
2042} 2044}
@@ -2046,14 +2048,14 @@ static int ata_port_nr_vacant(struct ata_port *ap)
2046 int i, cnt = 0; 2048 int i, cnt = 0;
2047 2049
2048 for (i = 0; i < ATA_MAX_DEVICES; i++) 2050 for (i = 0; i < ATA_MAX_DEVICES; i++)
2049 if (ap->device[i].class == ATA_DEV_UNKNOWN) 2051 if (ap->link.device[i].class == ATA_DEV_UNKNOWN)
2050 cnt++; 2052 cnt++;
2051 return cnt; 2053 return cnt;
2052} 2054}
2053 2055
2054static int ata_eh_skip_recovery(struct ata_port *ap) 2056static int ata_eh_skip_recovery(struct ata_port *ap)
2055{ 2057{
2056 struct ata_eh_context *ehc = &ap->eh_context; 2058 struct ata_eh_context *ehc = &ap->link.eh_context;
2057 int i; 2059 int i;
2058 2060
2059 /* thaw frozen port, resume link and recover failed devices */ 2061 /* thaw frozen port, resume link and recover failed devices */
@@ -2063,7 +2065,7 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
2063 2065
2064 /* skip if class codes for all vacant slots are ATA_DEV_NONE */ 2066 /* skip if class codes for all vacant slots are ATA_DEV_NONE */
2065 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2067 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2066 struct ata_device *dev = &ap->device[i]; 2068 struct ata_device *dev = &ap->link.device[i];
2067 2069
2068 if (dev->class == ATA_DEV_UNKNOWN && 2070 if (dev->class == ATA_DEV_UNKNOWN &&
2069 ehc->classes[dev->devno] != ATA_DEV_NONE) 2071 ehc->classes[dev->devno] != ATA_DEV_NONE)
@@ -2075,8 +2077,8 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
2075 2077
2076static void ata_eh_handle_dev_fail(struct ata_device *dev, int err) 2078static void ata_eh_handle_dev_fail(struct ata_device *dev, int err)
2077{ 2079{
2078 struct ata_port *ap = dev->ap; 2080 struct ata_port *ap = dev->link->ap;
2079 struct ata_eh_context *ehc = &ap->eh_context; 2081 struct ata_eh_context *ehc = &dev->link->eh_context;
2080 2082
2081 ehc->tries[dev->devno]--; 2083 ehc->tries[dev->devno]--;
2082 2084
@@ -2149,7 +2151,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
2149 ata_reset_fn_t softreset, ata_reset_fn_t hardreset, 2151 ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
2150 ata_postreset_fn_t postreset) 2152 ata_postreset_fn_t postreset)
2151{ 2153{
2152 struct ata_eh_context *ehc = &ap->eh_context; 2154 struct ata_eh_context *ehc = &ap->link.eh_context;
2153 struct ata_device *dev; 2155 struct ata_device *dev;
2154 int i, rc; 2156 int i, rc;
2155 2157
@@ -2157,7 +2159,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
2157 2159
2158 /* prep for recovery */ 2160 /* prep for recovery */
2159 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2161 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2160 dev = &ap->device[i]; 2162 dev = &ap->link.device[i];
2161 2163
2162 ehc->tries[dev->devno] = ATA_EH_DEV_TRIES; 2164 ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
2163 2165
@@ -2240,7 +2242,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
2240 out: 2242 out:
2241 if (rc) { 2243 if (rc) {
2242 for (i = 0; i < ATA_MAX_DEVICES; i++) 2244 for (i = 0; i < ATA_MAX_DEVICES; i++)
2243 ata_dev_disable(&ap->device[i]); 2245 ata_dev_disable(&ap->link.device[i]);
2244 } 2246 }
2245 2247
2246 DPRINTK("EXIT, rc=%d\n", rc); 2248 DPRINTK("EXIT, rc=%d\n", rc);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index e83647651b31..ec0e2638200e 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1368,14 +1368,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1368 case ATA_CMD_SET_FEATURES: 1368 case ATA_CMD_SET_FEATURES:
1369 if ((qc->tf.feature == SETFEATURES_WC_ON) || 1369 if ((qc->tf.feature == SETFEATURES_WC_ON) ||
1370 (qc->tf.feature == SETFEATURES_WC_OFF)) { 1370 (qc->tf.feature == SETFEATURES_WC_OFF)) {
1371 ap->eh_info.action |= ATA_EH_REVALIDATE; 1371 ap->link.eh_info.action |= ATA_EH_REVALIDATE;
1372 ata_port_schedule_eh(ap); 1372 ata_port_schedule_eh(ap);
1373 } 1373 }
1374 break; 1374 break;
1375 1375
1376 case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */ 1376 case ATA_CMD_INIT_DEV_PARAMS: /* CHS translation changed */
1377 case ATA_CMD_SET_MULTI: /* multi_count changed */ 1377 case ATA_CMD_SET_MULTI: /* multi_count changed */
1378 ap->eh_info.action |= ATA_EH_REVALIDATE; 1378 ap->link.eh_info.action |= ATA_EH_REVALIDATE;
1379 ata_port_schedule_eh(ap); 1379 ata_port_schedule_eh(ap);
1380 break; 1380 break;
1381 } 1381 }
@@ -1439,14 +1439,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
1439 */ 1439 */
1440static int ata_scmd_need_defer(struct ata_device *dev, int is_io) 1440static int ata_scmd_need_defer(struct ata_device *dev, int is_io)
1441{ 1441{
1442 struct ata_port *ap = dev->ap; 1442 struct ata_link *link = dev->link;
1443 int is_ncq = is_io && ata_ncq_enabled(dev); 1443 int is_ncq = is_io && ata_ncq_enabled(dev);
1444 1444
1445 if (is_ncq) { 1445 if (is_ncq) {
1446 if (!ata_tag_valid(ap->active_tag)) 1446 if (!ata_tag_valid(link->active_tag))
1447 return 0; 1447 return 0;
1448 } else { 1448 } else {
1449 if (!ata_tag_valid(ap->active_tag) && !ap->sactive) 1449 if (!ata_tag_valid(link->active_tag) && !link->sactive)
1450 return 0; 1450 return 0;
1451 } 1451 }
1452 return 1; 1452 return 1;
@@ -2426,7 +2426,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
2426static struct ata_device * ata_find_dev(struct ata_port *ap, int id) 2426static struct ata_device * ata_find_dev(struct ata_port *ap, int id)
2427{ 2427{
2428 if (likely(id < ATA_MAX_DEVICES)) 2428 if (likely(id < ATA_MAX_DEVICES))
2429 return &ap->device[id]; 2429 return &ap->link.device[id];
2430 return NULL; 2430 return NULL;
2431} 2431}
2432 2432
@@ -2458,7 +2458,7 @@ static int ata_scsi_dev_enabled(struct ata_device *dev)
2458 if (unlikely(!ata_dev_enabled(dev))) 2458 if (unlikely(!ata_dev_enabled(dev)))
2459 return 0; 2459 return 0;
2460 2460
2461 if (!atapi_enabled || (dev->ap->flags & ATA_FLAG_NO_ATAPI)) { 2461 if (!atapi_enabled || (dev->link->ap->flags & ATA_FLAG_NO_ATAPI)) {
2462 if (unlikely(dev->class == ATA_DEV_ATAPI)) { 2462 if (unlikely(dev->class == ATA_DEV_ATAPI)) {
2463 ata_dev_printk(dev, KERN_WARNING, 2463 ata_dev_printk(dev, KERN_WARNING,
2464 "WARNING: ATAPI is %s, device ignored.\n", 2464 "WARNING: ATAPI is %s, device ignored.\n",
@@ -2961,7 +2961,7 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
2961 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2961 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2962 struct scsi_device *sdev; 2962 struct scsi_device *sdev;
2963 2963
2964 dev = &ap->device[i]; 2964 dev = &ap->link.device[i];
2965 2965
2966 if (!ata_dev_enabled(dev) || dev->sdev) 2966 if (!ata_dev_enabled(dev) || dev->sdev)
2967 continue; 2967 continue;
@@ -2978,7 +2978,7 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
2978 * whether all devices are attached. 2978 * whether all devices are attached.
2979 */ 2979 */
2980 for (i = 0; i < ATA_MAX_DEVICES; i++) { 2980 for (i = 0; i < ATA_MAX_DEVICES; i++) {
2981 dev = &ap->device[i]; 2981 dev = &ap->link.device[i];
2982 if (ata_dev_enabled(dev) && !dev->sdev) 2982 if (ata_dev_enabled(dev) && !dev->sdev)
2983 break; 2983 break;
2984 } 2984 }
@@ -3049,7 +3049,7 @@ int ata_scsi_offline_dev(struct ata_device *dev)
3049 */ 3049 */
3050static void ata_scsi_remove_dev(struct ata_device *dev) 3050static void ata_scsi_remove_dev(struct ata_device *dev)
3051{ 3051{
3052 struct ata_port *ap = dev->ap; 3052 struct ata_port *ap = dev->link->ap;
3053 struct scsi_device *sdev; 3053 struct scsi_device *sdev;
3054 unsigned long flags; 3054 unsigned long flags;
3055 3055
@@ -3123,7 +3123,7 @@ void ata_scsi_hotplug(struct work_struct *work)
3123 3123
3124 /* unplug detached devices */ 3124 /* unplug detached devices */
3125 for (i = 0; i < ATA_MAX_DEVICES; i++) { 3125 for (i = 0; i < ATA_MAX_DEVICES; i++) {
3126 struct ata_device *dev = &ap->device[i]; 3126 struct ata_device *dev = &ap->link.device[i];
3127 unsigned long flags; 3127 unsigned long flags;
3128 3128
3129 if (!(dev->flags & ATA_DFLAG_DETACHED)) 3129 if (!(dev->flags & ATA_DFLAG_DETACHED))
@@ -3162,6 +3162,7 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
3162 unsigned int id, unsigned int lun) 3162 unsigned int id, unsigned int lun)
3163{ 3163{
3164 struct ata_port *ap = ata_shost_to_port(shost); 3164 struct ata_port *ap = ata_shost_to_port(shost);
3165 struct ata_eh_info *ehi = &ap->link.eh_info;
3165 unsigned long flags; 3166 unsigned long flags;
3166 int rc = 0; 3167 int rc = 0;
3167 3168
@@ -3175,15 +3176,15 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel,
3175 spin_lock_irqsave(ap->lock, flags); 3176 spin_lock_irqsave(ap->lock, flags);
3176 3177
3177 if (id == SCAN_WILD_CARD) { 3178 if (id == SCAN_WILD_CARD) {
3178 ap->eh_info.probe_mask |= (1 << ATA_MAX_DEVICES) - 1; 3179 ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
3179 ap->eh_info.action |= ATA_EH_SOFTRESET; 3180 ehi->action |= ATA_EH_SOFTRESET;
3180 } else { 3181 } else {
3181 struct ata_device *dev = ata_find_dev(ap, id); 3182 struct ata_device *dev = ata_find_dev(ap, id);
3182 3183
3183 if (dev) { 3184 if (dev) {
3184 ap->eh_info.probe_mask |= 1 << dev->devno; 3185 ehi->probe_mask |= 1 << dev->devno;
3185 ap->eh_info.action |= ATA_EH_SOFTRESET; 3186 ehi->action |= ATA_EH_SOFTRESET;
3186 ap->eh_info.flags |= ATA_EHI_RESUME_LINK; 3187 ehi->flags |= ATA_EHI_RESUME_LINK;
3187 } else 3188 } else
3188 rc = -EINVAL; 3189 rc = -EINVAL;
3189 } 3190 }
@@ -3220,7 +3221,7 @@ void ata_scsi_dev_rescan(struct work_struct *work)
3220 spin_lock_irqsave(ap->lock, flags); 3221 spin_lock_irqsave(ap->lock, flags);
3221 3222
3222 for (i = 0; i < ATA_MAX_DEVICES; i++) { 3223 for (i = 0; i < ATA_MAX_DEVICES; i++) {
3223 struct ata_device *dev = &ap->device[i]; 3224 struct ata_device *dev = &ap->link.device[i];
3224 struct scsi_device *sdev = dev->sdev; 3225 struct scsi_device *sdev = dev->sdev;
3225 3226
3226 if (!ata_dev_enabled(dev) || !sdev) 3227 if (!ata_dev_enabled(dev) || !sdev)
@@ -3359,7 +3360,7 @@ EXPORT_SYMBOL_GPL(ata_sas_port_destroy);
3359int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) 3360int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap)
3360{ 3361{
3361 ata_scsi_sdev_config(sdev); 3362 ata_scsi_sdev_config(sdev);
3362 ata_scsi_dev_config(sdev, ap->device); 3363 ata_scsi_dev_config(sdev, ap->link.device);
3363 return 0; 3364 return 0;
3364} 3365}
3365EXPORT_SYMBOL_GPL(ata_sas_slave_configure); 3366EXPORT_SYMBOL_GPL(ata_sas_slave_configure);
@@ -3382,8 +3383,8 @@ int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
3382 3383
3383 ata_scsi_dump_cdb(ap, cmd); 3384 ata_scsi_dump_cdb(ap, cmd);
3384 3385
3385 if (likely(ata_scsi_dev_enabled(ap->device))) 3386 if (likely(ata_scsi_dev_enabled(ap->link.device)))
3386 rc = __ata_scsi_queuecmd(cmd, done, ap->device); 3387 rc = __ata_scsi_queuecmd(cmd, done, ap->link.device);
3387 else { 3388 else {
3388 cmd->result = (DID_BAD_TARGET << 16); 3389 cmd->result = (DID_BAD_TARGET << 16);
3389 done(cmd); 3390 done(cmd);
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 8023167bbbeb..2100cd61ed69 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -445,7 +445,7 @@ void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
445 unsigned long flags; 445 unsigned long flags;
446 int thaw = 0; 446 int thaw = 0;
447 447
448 qc = __ata_qc_from_tag(ap, ap->active_tag); 448 qc = __ata_qc_from_tag(ap, ap->link.active_tag);
449 if (qc && !(qc->flags & ATA_QCFLAG_FAILED)) 449 if (qc && !(qc->flags & ATA_QCFLAG_FAILED))
450 qc = NULL; 450 qc = NULL;
451 451
@@ -909,7 +909,7 @@ unsigned long ata_pci_default_filter(struct ata_device *adev, unsigned long xfer
909 /* Filter out DMA modes if the device has been configured by 909 /* Filter out DMA modes if the device has been configured by
910 the BIOS as PIO only */ 910 the BIOS as PIO only */
911 911
912 if (adev->ap->ioaddr.bmdma_addr == 0) 912 if (adev->link->ap->ioaddr.bmdma_addr == 0)
913 xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); 913 xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
914 return xfer_mask; 914 return xfer_mask;
915} 915}
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index 5d8b91e70ecd..ece1a28f0a4a 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -391,7 +391,7 @@ static void it821x_passthru_dev_select(struct ata_port *ap,
391{ 391{
392 struct it821x_dev *itdev = ap->private_data; 392 struct it821x_dev *itdev = ap->private_data;
393 if (itdev && device != itdev->last_device) { 393 if (itdev && device != itdev->last_device) {
394 struct ata_device *adev = &ap->device[device]; 394 struct ata_device *adev = &ap->link.device[device];
395 it821x_program(ap, adev, itdev->pio[adev->devno]); 395 it821x_program(ap, adev, itdev->pio[adev->devno]);
396 itdev->last_device = device; 396 itdev->last_device = device;
397 } 397 }
@@ -464,7 +464,7 @@ static int it821x_smart_set_mode(struct ata_port *ap, struct ata_device **unused
464 int i; 464 int i;
465 465
466 for (i = 0; i < ATA_MAX_DEVICES; i++) { 466 for (i = 0; i < ATA_MAX_DEVICES; i++) {
467 struct ata_device *dev = &ap->device[i]; 467 struct ata_device *dev = &ap->link.device[i];
468 if (ata_dev_enabled(dev)) { 468 if (ata_dev_enabled(dev)) {
469 /* We don't really care */ 469 /* We don't really care */
470 dev->pio_mode = XFER_PIO_0; 470 dev->pio_mode = XFER_PIO_0;
diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index 5dea3584c6c2..3e2b8ce5fa37 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -31,7 +31,7 @@ static int ixp4xx_set_mode(struct ata_port *ap, struct ata_device **error)
31 int i; 31 int i;
32 32
33 for (i = 0; i < ATA_MAX_DEVICES; i++) { 33 for (i = 0; i < ATA_MAX_DEVICES; i++) {
34 struct ata_device *dev = &ap->device[i]; 34 struct ata_device *dev = &ap->link.device[i];
35 if (ata_dev_enabled(dev)) { 35 if (ata_dev_enabled(dev)) {
36 ata_dev_printk(dev, KERN_INFO, "configured for PIO0\n"); 36 ata_dev_printk(dev, KERN_INFO, "configured for PIO0\n");
37 dev->pio_mode = XFER_PIO_0; 37 dev->pio_mode = XFER_PIO_0;
@@ -49,7 +49,7 @@ static void ixp4xx_mmio_data_xfer(struct ata_device *adev, unsigned char *buf,
49 unsigned int i; 49 unsigned int i;
50 unsigned int words = buflen >> 1; 50 unsigned int words = buflen >> 1;
51 u16 *buf16 = (u16 *) buf; 51 u16 *buf16 = (u16 *) buf;
52 struct ata_port *ap = adev->ap; 52 struct ata_port *ap = adev->link->ap;
53 void __iomem *mmio = ap->ioaddr.data_addr; 53 void __iomem *mmio = ap->ioaddr.data_addr;
54 struct ixp4xx_pata_data *data = ap->host->dev->platform_data; 54 struct ixp4xx_pata_data *data = ap->host->dev->platform_data;
55 55
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index edffc25d2d3f..4bcc0ae8d108 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -112,7 +112,7 @@ static int legacy_set_mode(struct ata_port *ap, struct ata_device **unused)
112 int i; 112 int i;
113 113
114 for (i = 0; i < ATA_MAX_DEVICES; i++) { 114 for (i = 0; i < ATA_MAX_DEVICES; i++) {
115 struct ata_device *dev = &ap->device[i]; 115 struct ata_device *dev = &ap->link.device[i];
116 if (ata_dev_enabled(dev)) { 116 if (ata_dev_enabled(dev)) {
117 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); 117 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
118 dev->pio_mode = XFER_PIO_0; 118 dev->pio_mode = XFER_PIO_0;
@@ -256,7 +256,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
256 256
257static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) 257static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
258{ 258{
259 struct ata_port *ap = adev->ap; 259 struct ata_port *ap = adev->link->ap;
260 int slop = buflen & 3; 260 int slop = buflen & 3;
261 unsigned long flags; 261 unsigned long flags;
262 262
diff --git a/drivers/ata/pata_optidma.c b/drivers/ata/pata_optidma.c
index f89bdfde16d0..f8234d7fd825 100644
--- a/drivers/ata/pata_optidma.c
+++ b/drivers/ata/pata_optidma.c
@@ -340,8 +340,8 @@ static int optidma_set_mode(struct ata_port *ap, struct ata_device **r_failed)
340 pci_read_config_byte(pdev, 0x43, &r); 340 pci_read_config_byte(pdev, 0x43, &r);
341 341
342 r &= (0x0F << nybble); 342 r &= (0x0F << nybble);
343 r |= (optidma_make_bits43(&ap->device[0]) + 343 r |= (optidma_make_bits43(&ap->link.device[0]) +
344 (optidma_make_bits43(&ap->device[0]) << 2)) << nybble; 344 (optidma_make_bits43(&ap->link.device[0]) << 2)) << nybble;
345 pci_write_config_byte(pdev, 0x43, r); 345 pci_write_config_byte(pdev, 0x43, r);
346 } 346 }
347 return rc; 347 return rc;
diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c
index 0f2b027624d6..890f649ddcce 100644
--- a/drivers/ata/pata_pcmcia.c
+++ b/drivers/ata/pata_pcmcia.c
@@ -67,8 +67,8 @@ struct ata_pcmcia_info {
67 67
68static int pcmcia_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev) 68static int pcmcia_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
69{ 69{
70 struct ata_device *master = &ap->device[0]; 70 struct ata_device *master = &ap->link.device[0];
71 struct ata_device *slave = &ap->device[1]; 71 struct ata_device *slave = &ap->link.device[1];
72 72
73 if (!ata_dev_enabled(master) || !ata_dev_enabled(slave)) 73 if (!ata_dev_enabled(master) || !ata_dev_enabled(slave))
74 return ata_do_set_mode(ap, r_failed_dev); 74 return ata_do_set_mode(ap, r_failed_dev);
diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c
index bb64a986e8f5..fa780509a1dc 100644
--- a/drivers/ata/pata_pdc2027x.c
+++ b/drivers/ata/pata_pdc2027x.c
@@ -486,7 +486,7 @@ static int pdc2027x_set_mode(struct ata_port *ap, struct ata_device **r_failed)
486 return i; 486 return i;
487 487
488 for (i = 0; i < ATA_MAX_DEVICES; i++) { 488 for (i = 0; i < ATA_MAX_DEVICES; i++) {
489 struct ata_device *dev = &ap->device[i]; 489 struct ata_device *dev = &ap->link.device[i];
490 490
491 if (ata_dev_enabled(dev)) { 491 if (ata_dev_enabled(dev)) {
492 492
diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index 5086d03f2d7c..e89656bffa84 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -35,7 +35,7 @@ static int pata_platform_set_mode(struct ata_port *ap, struct ata_device **unuse
35 int i; 35 int i;
36 36
37 for (i = 0; i < ATA_MAX_DEVICES; i++) { 37 for (i = 0; i < ATA_MAX_DEVICES; i++) {
38 struct ata_device *dev = &ap->device[i]; 38 struct ata_device *dev = &ap->link.device[i];
39 39
40 if (ata_dev_enabled(dev)) { 40 if (ata_dev_enabled(dev)) {
41 /* We don't really care */ 41 /* We don't really care */
diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c
index 1998c19e8743..ec2206e820ac 100644
--- a/drivers/ata/pata_qdi.c
+++ b/drivers/ata/pata_qdi.c
@@ -126,7 +126,7 @@ static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)
126 126
127static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) 127static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
128{ 128{
129 struct ata_port *ap = adev->ap; 129 struct ata_port *ap = adev->link->ap;
130 int slop = buflen & 3; 130 int slop = buflen & 3;
131 131
132 if (ata_id_has_dword_io(adev->id)) { 132 if (ata_id_has_dword_io(adev->id)) {
diff --git a/drivers/ata/pata_rz1000.c b/drivers/ata/pata_rz1000.c
index 7632fcb070ca..57363c0ce068 100644
--- a/drivers/ata/pata_rz1000.c
+++ b/drivers/ata/pata_rz1000.c
@@ -39,7 +39,7 @@ static int rz1000_set_mode(struct ata_port *ap, struct ata_device **unused)
39 int i; 39 int i;
40 40
41 for (i = 0; i < ATA_MAX_DEVICES; i++) { 41 for (i = 0; i < ATA_MAX_DEVICES; i++) {
42 struct ata_device *dev = &ap->device[i]; 42 struct ata_device *dev = &ap->link.device[i];
43 if (ata_dev_enabled(dev)) { 43 if (ata_dev_enabled(dev)) {
44 /* We don't really care */ 44 /* We don't really care */
45 dev->pio_mode = XFER_PIO_0; 45 dev->pio_mode = XFER_PIO_0;
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index 2d048ef25a5a..aab068fbb7bc 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -785,7 +785,7 @@ static u8 scc_bmdma_status (struct ata_port *ap)
785static void scc_data_xfer (struct ata_device *adev, unsigned char *buf, 785static void scc_data_xfer (struct ata_device *adev, unsigned char *buf,
786 unsigned int buflen, int write_data) 786 unsigned int buflen, int write_data)
787{ 787{
788 struct ata_port *ap = adev->ap; 788 struct ata_port *ap = adev->link->ap;
789 unsigned int words = buflen >> 1; 789 unsigned int words = buflen >> 1;
790 unsigned int i; 790 unsigned int i;
791 u16 *buf16 = (u16 *) buf; 791 u16 *buf16 = (u16 *) buf;
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index cce2834b2b60..9d6f81d52e18 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -84,7 +84,7 @@ static int sis_short_ata40(struct pci_dev *dev)
84 84
85static int sis_old_port_base(struct ata_device *adev) 85static int sis_old_port_base(struct ata_device *adev)
86{ 86{
87 return 0x40 + (4 * adev->ap->port_no) + (2 * adev->devno); 87 return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);
88} 88}
89 89
90/** 90/**
diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
index 83abfeca4057..c37570330073 100644
--- a/drivers/ata/pata_winbond.c
+++ b/drivers/ata/pata_winbond.c
@@ -94,7 +94,7 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
94 94
95static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) 95static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
96{ 96{
97 struct ata_port *ap = adev->ap; 97 struct ata_port *ap = adev->link->ap;
98 int slop = buflen & 3; 98 int slop = buflen & 3;
99 99
100 if (ata_id_has_dword_io(adev->id)) { 100 if (ata_id_has_dword_io(adev->id)) {
diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c
index c95c1bf7df37..064a3b505609 100644
--- a/drivers/ata/pdc_adma.c
+++ b/drivers/ata/pdc_adma.c
@@ -485,7 +485,7 @@ static inline unsigned int adma_intr_pkt(struct ata_host *host)
485 pp = ap->private_data; 485 pp = ap->private_data;
486 if (!pp || pp->state != adma_state_pkt) 486 if (!pp || pp->state != adma_state_pkt)
487 continue; 487 continue;
488 qc = ata_qc_from_tag(ap, ap->active_tag); 488 qc = ata_qc_from_tag(ap, ap->link.active_tag);
489 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 489 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
490 if (status & aPERR) 490 if (status & aPERR)
491 qc->err_mask |= AC_ERR_HOST_BUS; 491 qc->err_mask |= AC_ERR_HOST_BUS;
@@ -500,7 +500,7 @@ static inline unsigned int adma_intr_pkt(struct ata_host *host)
500 if (!qc->err_mask) 500 if (!qc->err_mask)
501 ata_qc_complete(qc); 501 ata_qc_complete(qc);
502 else { 502 else {
503 struct ata_eh_info *ehi = &ap->eh_info; 503 struct ata_eh_info *ehi = &ap->link.eh_info;
504 ata_ehi_clear_desc(ehi); 504 ata_ehi_clear_desc(ehi);
505 ata_ehi_push_desc(ehi, 505 ata_ehi_push_desc(ehi,
506 "ADMA-status 0x%02X", status); 506 "ADMA-status 0x%02X", status);
@@ -529,7 +529,7 @@ static inline unsigned int adma_intr_mmio(struct ata_host *host)
529 struct adma_port_priv *pp = ap->private_data; 529 struct adma_port_priv *pp = ap->private_data;
530 if (!pp || pp->state != adma_state_mmio) 530 if (!pp || pp->state != adma_state_mmio)
531 continue; 531 continue;
532 qc = ata_qc_from_tag(ap, ap->active_tag); 532 qc = ata_qc_from_tag(ap, ap->link.active_tag);
533 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 533 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
534 534
535 /* check main status, clearing INTRQ */ 535 /* check main status, clearing INTRQ */
@@ -545,7 +545,8 @@ static inline unsigned int adma_intr_mmio(struct ata_host *host)
545 if (!qc->err_mask) 545 if (!qc->err_mask)
546 ata_qc_complete(qc); 546 ata_qc_complete(qc);
547 else { 547 else {
548 struct ata_eh_info *ehi = &ap->eh_info; 548 struct ata_eh_info *ehi =
549 &ap->link.eh_info;
549 ata_ehi_clear_desc(ehi); 550 ata_ehi_clear_desc(ehi);
550 ata_ehi_push_desc(ehi, 551 ata_ehi_push_desc(ehi,
551 "status 0x%02X", status); 552 "status 0x%02X", status);
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index fdbed8ecdfc2..3c0ef7a2f2fe 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -285,7 +285,7 @@ static void inic_irq_clear(struct ata_port *ap)
285static void inic_host_intr(struct ata_port *ap) 285static void inic_host_intr(struct ata_port *ap)
286{ 286{
287 void __iomem *port_base = inic_port_base(ap); 287 void __iomem *port_base = inic_port_base(ap);
288 struct ata_eh_info *ehi = &ap->eh_info; 288 struct ata_eh_info *ehi = &ap->link.eh_info;
289 u8 irq_stat; 289 u8 irq_stat;
290 290
291 /* fetch and clear irq */ 291 /* fetch and clear irq */
@@ -293,7 +293,8 @@ static void inic_host_intr(struct ata_port *ap)
293 writeb(irq_stat, port_base + PORT_IRQ_STAT); 293 writeb(irq_stat, port_base + PORT_IRQ_STAT);
294 294
295 if (likely(!(irq_stat & PIRQ_ERR))) { 295 if (likely(!(irq_stat & PIRQ_ERR))) {
296 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag); 296 struct ata_queued_cmd *qc =
297 ata_qc_from_tag(ap, ap->link.active_tag);
297 298
298 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) { 299 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
299 ata_chk_status(ap); /* clear ATA interrupt */ 300 ata_chk_status(ap); /* clear ATA interrupt */
@@ -421,7 +422,7 @@ static int inic_hardreset(struct ata_port *ap, unsigned int *class,
421{ 422{
422 void __iomem *port_base = inic_port_base(ap); 423 void __iomem *port_base = inic_port_base(ap);
423 void __iomem *idma_ctl = port_base + PORT_IDMA_CTL; 424 void __iomem *idma_ctl = port_base + PORT_IDMA_CTL;
424 const unsigned long *timing = sata_ehc_deb_timing(&ap->eh_context); 425 const unsigned long *timing = sata_ehc_deb_timing(&ap->link.eh_context);
425 u16 val; 426 u16 val;
426 int rc; 427 int rc;
427 428
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index d9832e234e44..246e7c5fdce8 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1415,7 +1415,7 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
1415 struct mv_host_priv *hpriv = ap->host->private_data; 1415 struct mv_host_priv *hpriv = ap->host->private_data;
1416 unsigned int edma_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); 1416 unsigned int edma_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
1417 unsigned int action = 0, err_mask = 0; 1417 unsigned int action = 0, err_mask = 0;
1418 struct ata_eh_info *ehi = &ap->eh_info; 1418 struct ata_eh_info *ehi = &ap->link.eh_info;
1419 1419
1420 ata_ehi_clear_desc(ehi); 1420 ata_ehi_clear_desc(ehi);
1421 1421
@@ -1508,7 +1508,7 @@ static void mv_intr_pio(struct ata_port *ap)
1508 return; 1508 return;
1509 1509
1510 /* get active ATA command */ 1510 /* get active ATA command */
1511 qc = ata_qc_from_tag(ap, ap->active_tag); 1511 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1512 if (unlikely(!qc)) /* no active tag */ 1512 if (unlikely(!qc)) /* no active tag */
1513 return; 1513 return;
1514 if (qc->tf.flags & ATA_TFLAG_POLLING) /* polling; we don't own qc */ 1514 if (qc->tf.flags & ATA_TFLAG_POLLING) /* polling; we don't own qc */
@@ -1543,7 +1543,7 @@ static void mv_intr_edma(struct ata_port *ap)
1543 1543
1544 /* 50xx: get active ATA command */ 1544 /* 50xx: get active ATA command */
1545 if (IS_GEN_I(hpriv)) 1545 if (IS_GEN_I(hpriv))
1546 tag = ap->active_tag; 1546 tag = ap->link.active_tag;
1547 1547
1548 /* Gen II/IIE: get active ATA command via tag, to enable 1548 /* Gen II/IIE: get active ATA command via tag, to enable
1549 * support for queueing. this works transparently for 1549 * support for queueing. this works transparently for
@@ -1646,7 +1646,7 @@ static void mv_host_intr(struct ata_host *host, u32 relevant, unsigned int hc)
1646 if (unlikely(have_err_bits)) { 1646 if (unlikely(have_err_bits)) {
1647 struct ata_queued_cmd *qc; 1647 struct ata_queued_cmd *qc;
1648 1648
1649 qc = ata_qc_from_tag(ap, ap->active_tag); 1649 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1650 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) 1650 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
1651 continue; 1651 continue;
1652 1652
@@ -1688,14 +1688,14 @@ static void mv_pci_error(struct ata_host *host, void __iomem *mmio)
1688 for (i = 0; i < host->n_ports; i++) { 1688 for (i = 0; i < host->n_ports; i++) {
1689 ap = host->ports[i]; 1689 ap = host->ports[i];
1690 if (!ata_port_offline(ap)) { 1690 if (!ata_port_offline(ap)) {
1691 ehi = &ap->eh_info; 1691 ehi = &ap->link.eh_info;
1692 ata_ehi_clear_desc(ehi); 1692 ata_ehi_clear_desc(ehi);
1693 if (!printed++) 1693 if (!printed++)
1694 ata_ehi_push_desc(ehi, 1694 ata_ehi_push_desc(ehi,
1695 "PCI err cause 0x%08x", err_cause); 1695 "PCI err cause 0x%08x", err_cause);
1696 err_mask = AC_ERR_HOST_BUS; 1696 err_mask = AC_ERR_HOST_BUS;
1697 ehi->action = ATA_EH_HARDRESET; 1697 ehi->action = ATA_EH_HARDRESET;
1698 qc = ata_qc_from_tag(ap, ap->active_tag); 1698 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1699 if (qc) 1699 if (qc)
1700 qc->err_mask |= err_mask; 1700 qc->err_mask |= err_mask;
1701 else 1701 else
@@ -2269,7 +2269,7 @@ comreset_retry:
2269static int mv_prereset(struct ata_port *ap, unsigned long deadline) 2269static int mv_prereset(struct ata_port *ap, unsigned long deadline)
2270{ 2270{
2271 struct mv_port_priv *pp = ap->private_data; 2271 struct mv_port_priv *pp = ap->private_data;
2272 struct ata_eh_context *ehc = &ap->eh_context; 2272 struct ata_eh_context *ehc = &ap->link.eh_context;
2273 int rc; 2273 int rc;
2274 2274
2275 rc = mv_stop_dma(ap); 2275 rc = mv_stop_dma(ap);
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 40dc73139858..df4d50dcffbc 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -594,7 +594,7 @@ static int nv_adma_slave_config(struct scsi_device *sdev)
594 /* Not a proper libata device, ignore */ 594 /* Not a proper libata device, ignore */
595 return rc; 595 return rc;
596 596
597 if (ap->device[sdev->id].class == ATA_DEV_ATAPI) { 597 if (ap->link.device[sdev->id].class == ATA_DEV_ATAPI) {
598 /* 598 /*
599 * NVIDIA reports that ADMA mode does not support ATAPI commands. 599 * NVIDIA reports that ADMA mode does not support ATAPI commands.
600 * Therefore ATAPI commands are sent through the legacy interface. 600 * Therefore ATAPI commands are sent through the legacy interface.
@@ -711,7 +711,7 @@ static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
711 flags & (NV_CPB_RESP_ATA_ERR | 711 flags & (NV_CPB_RESP_ATA_ERR |
712 NV_CPB_RESP_CMD_ERR | 712 NV_CPB_RESP_CMD_ERR |
713 NV_CPB_RESP_CPB_ERR)))) { 713 NV_CPB_RESP_CPB_ERR)))) {
714 struct ata_eh_info *ehi = &ap->eh_info; 714 struct ata_eh_info *ehi = &ap->link.eh_info;
715 int freeze = 0; 715 int freeze = 0;
716 716
717 ata_ehi_clear_desc(ehi); 717 ata_ehi_clear_desc(ehi);
@@ -747,7 +747,7 @@ static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
747 DPRINTK("Completing qc from tag %d\n",cpb_num); 747 DPRINTK("Completing qc from tag %d\n",cpb_num);
748 ata_qc_complete(qc); 748 ata_qc_complete(qc);
749 } else { 749 } else {
750 struct ata_eh_info *ehi = &ap->eh_info; 750 struct ata_eh_info *ehi = &ap->link.eh_info;
751 /* Notifier bits set without a command may indicate the drive 751 /* Notifier bits set without a command may indicate the drive
752 is misbehaving. Raise host state machine violation on this 752 is misbehaving. Raise host state machine violation on this
753 condition. */ 753 condition. */
@@ -764,7 +764,7 @@ static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
764 764
765static int nv_host_intr(struct ata_port *ap, u8 irq_stat) 765static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
766{ 766{
767 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag); 767 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
768 768
769 /* freeze if hotplugged */ 769 /* freeze if hotplugged */
770 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) { 770 if (unlikely(irq_stat & (NV_INT_ADDED | NV_INT_REMOVED))) {
@@ -817,7 +817,7 @@ static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
817 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) { 817 if (pp->flags & NV_ADMA_PORT_REGISTER_MODE) {
818 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804) 818 u8 irq_stat = readb(host->iomap[NV_MMIO_BAR] + NV_INT_STATUS_CK804)
819 >> (NV_INT_PORT_SHIFT * i); 819 >> (NV_INT_PORT_SHIFT * i);
820 if(ata_tag_valid(ap->active_tag)) 820 if(ata_tag_valid(ap->link.active_tag))
821 /** NV_INT_DEV indication seems unreliable at times 821 /** NV_INT_DEV indication seems unreliable at times
822 at least in ADMA mode. Force it on always when a 822 at least in ADMA mode. Force it on always when a
823 command is active, to prevent losing interrupts. */ 823 command is active, to prevent losing interrupts. */
@@ -852,7 +852,7 @@ static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
852 NV_ADMA_STAT_HOTUNPLUG | 852 NV_ADMA_STAT_HOTUNPLUG |
853 NV_ADMA_STAT_TIMEOUT | 853 NV_ADMA_STAT_TIMEOUT |
854 NV_ADMA_STAT_SERROR))) { 854 NV_ADMA_STAT_SERROR))) {
855 struct ata_eh_info *ehi = &ap->eh_info; 855 struct ata_eh_info *ehi = &ap->link.eh_info;
856 856
857 ata_ehi_clear_desc(ehi); 857 ata_ehi_clear_desc(ehi);
858 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status ); 858 __ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status );
@@ -879,10 +879,10 @@ static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
879 u32 check_commands; 879 u32 check_commands;
880 int pos, error = 0; 880 int pos, error = 0;
881 881
882 if(ata_tag_valid(ap->active_tag)) 882 if(ata_tag_valid(ap->link.active_tag))
883 check_commands = 1 << ap->active_tag; 883 check_commands = 1 << ap->link.active_tag;
884 else 884 else
885 check_commands = ap->sactive; 885 check_commands = ap->link.sactive;
886 886
887 /** Check CPBs for completed commands */ 887 /** Check CPBs for completed commands */
888 while ((pos = ffs(check_commands)) && !error) { 888 while ((pos = ffs(check_commands)) && !error) {
@@ -1333,7 +1333,7 @@ static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance)
1333 !(ap->flags & ATA_FLAG_DISABLED)) { 1333 !(ap->flags & ATA_FLAG_DISABLED)) {
1334 struct ata_queued_cmd *qc; 1334 struct ata_queued_cmd *qc;
1335 1335
1336 qc = ata_qc_from_tag(ap, ap->active_tag); 1336 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1337 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) 1337 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
1338 handled += ata_host_intr(ap, qc); 1338 handled += ata_host_intr(ap, qc);
1339 else 1339 else
@@ -1485,7 +1485,7 @@ static void nv_adma_error_handler(struct ata_port *ap)
1485 int i; 1485 int i;
1486 u16 tmp; 1486 u16 tmp;
1487 1487
1488 if(ata_tag_valid(ap->active_tag) || ap->sactive) { 1488 if(ata_tag_valid(ap->link.active_tag) || ap->link.sactive) {
1489 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER); 1489 u32 notifier = readl(mmio + NV_ADMA_NOTIFIER);
1490 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR); 1490 u32 notifier_error = readl(mmio + NV_ADMA_NOTIFIER_ERROR);
1491 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL); 1491 u32 gen_ctl = readl(pp->gen_block + NV_ADMA_GEN_CTL);
@@ -1501,8 +1501,8 @@ static void nv_adma_error_handler(struct ata_port *ap)
1501 1501
1502 for( i=0;i<NV_ADMA_MAX_CPBS;i++) { 1502 for( i=0;i<NV_ADMA_MAX_CPBS;i++) {
1503 struct nv_adma_cpb *cpb = &pp->cpb[i]; 1503 struct nv_adma_cpb *cpb = &pp->cpb[i];
1504 if( (ata_tag_valid(ap->active_tag) && i == ap->active_tag) || 1504 if( (ata_tag_valid(ap->link.active_tag) && i == ap->link.active_tag) ||
1505 ap->sactive & (1 << i) ) 1505 ap->link.sactive & (1 << i) )
1506 ata_port_printk(ap, KERN_ERR, 1506 ata_port_printk(ap, KERN_ERR,
1507 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n", 1507 "CPB %d: ctl_flags 0x%x, resp_flags 0x%x\n",
1508 i, cpb->ctl_flags, cpb->resp_flags); 1508 i, cpb->ctl_flags, cpb->resp_flags);
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 25698cf0dce0..620d0675d18a 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -626,7 +626,7 @@ static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
626static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc, 626static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
627 u32 port_status, u32 err_mask) 627 u32 port_status, u32 err_mask)
628{ 628{
629 struct ata_eh_info *ehi = &ap->eh_info; 629 struct ata_eh_info *ehi = &ap->link.eh_info;
630 unsigned int ac_err_mask = 0; 630 unsigned int ac_err_mask = 0;
631 631
632 ata_ehi_clear_desc(ehi); 632 ata_ehi_clear_desc(ehi);
@@ -773,7 +773,7 @@ static irqreturn_t pdc_interrupt (int irq, void *dev_instance)
773 tmp = hotplug_status & (0x11 << ata_no); 773 tmp = hotplug_status & (0x11 << ata_no);
774 if (tmp && ap && 774 if (tmp && ap &&
775 !(ap->flags & ATA_FLAG_DISABLED)) { 775 !(ap->flags & ATA_FLAG_DISABLED)) {
776 struct ata_eh_info *ehi = &ap->eh_info; 776 struct ata_eh_info *ehi = &ap->link.eh_info;
777 ata_ehi_clear_desc(ehi); 777 ata_ehi_clear_desc(ehi);
778 ata_ehi_hotplugged(ehi); 778 ata_ehi_hotplugged(ehi);
779 ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp); 779 ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp);
@@ -788,7 +788,7 @@ static irqreturn_t pdc_interrupt (int irq, void *dev_instance)
788 !(ap->flags & ATA_FLAG_DISABLED)) { 788 !(ap->flags & ATA_FLAG_DISABLED)) {
789 struct ata_queued_cmd *qc; 789 struct ata_queued_cmd *qc;
790 790
791 qc = ata_qc_from_tag(ap, ap->active_tag); 791 qc = ata_qc_from_tag(ap, ap->link.active_tag);
792 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) 792 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
793 handled += pdc_host_intr(ap, qc); 793 handled += pdc_host_intr(ap, qc);
794 } 794 }
diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c
index 5e1dfdda698f..ef1ad69c26ed 100644
--- a/drivers/ata/sata_qstor.c
+++ b/drivers/ata/sata_qstor.c
@@ -404,7 +404,7 @@ static inline unsigned int qs_intr_pkt(struct ata_host *host)
404 struct qs_port_priv *pp = ap->private_data; 404 struct qs_port_priv *pp = ap->private_data;
405 if (!pp || pp->state != qs_state_pkt) 405 if (!pp || pp->state != qs_state_pkt)
406 continue; 406 continue;
407 qc = ata_qc_from_tag(ap, ap->active_tag); 407 qc = ata_qc_from_tag(ap, ap->link.active_tag);
408 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 408 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
409 switch (sHST) { 409 switch (sHST) {
410 case 0: /* successful CPB */ 410 case 0: /* successful CPB */
@@ -437,7 +437,7 @@ static inline unsigned int qs_intr_mmio(struct ata_host *host)
437 struct qs_port_priv *pp = ap->private_data; 437 struct qs_port_priv *pp = ap->private_data;
438 if (!pp || pp->state != qs_state_mmio) 438 if (!pp || pp->state != qs_state_mmio)
439 continue; 439 continue;
440 qc = ata_qc_from_tag(ap, ap->active_tag); 440 qc = ata_qc_from_tag(ap, ap->link.active_tag);
441 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) { 441 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
442 442
443 /* check main status, clearing INTRQ */ 443 /* check main status, clearing INTRQ */
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index 8c72e714b456..2ddbe4cc71e4 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -312,7 +312,7 @@ static int sil_set_mode (struct ata_port *ap, struct ata_device **r_failed)
312 return rc; 312 return rc;
313 313
314 for (i = 0; i < 2; i++) { 314 for (i = 0; i < 2; i++) {
315 dev = &ap->device[i]; 315 dev = &ap->link.device[i];
316 if (!ata_dev_enabled(dev)) 316 if (!ata_dev_enabled(dev))
317 dev_mode[i] = 0; /* PIO0/1/2 */ 317 dev_mode[i] = 0; /* PIO0/1/2 */
318 else if (dev->flags & ATA_DFLAG_PIO) 318 else if (dev->flags & ATA_DFLAG_PIO)
@@ -374,8 +374,8 @@ static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
374 374
375static void sil_host_intr(struct ata_port *ap, u32 bmdma2) 375static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
376{ 376{
377 struct ata_eh_info *ehi = &ap->eh_info; 377 struct ata_eh_info *ehi = &ap->link.eh_info;
378 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag); 378 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
379 u8 status; 379 u8 status;
380 380
381 if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) { 381 if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
@@ -394,8 +394,8 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
394 * repeat probing needlessly. 394 * repeat probing needlessly.
395 */ 395 */
396 if (!(ap->pflags & ATA_PFLAG_FROZEN)) { 396 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
397 ata_ehi_hotplugged(&ap->eh_info); 397 ata_ehi_hotplugged(&ap->link.eh_info);
398 ap->eh_info.serror |= serror; 398 ap->link.eh_info.serror |= serror;
399 } 399 }
400 400
401 goto freeze; 401 goto freeze;
@@ -562,8 +562,8 @@ static void sil_thaw(struct ata_port *ap)
562 */ 562 */
563static void sil_dev_config(struct ata_device *dev) 563static void sil_dev_config(struct ata_device *dev)
564{ 564{
565 struct ata_port *ap = dev->ap; 565 struct ata_port *ap = dev->link->ap;
566 int print_info = ap->eh_context.i.flags & ATA_EHI_PRINTINFO; 566 int print_info = ap->link.eh_context.i.flags & ATA_EHI_PRINTINFO;
567 unsigned int n, quirks = 0; 567 unsigned int n, quirks = 0;
568 unsigned char model_num[ATA_ID_PROD_LEN + 1]; 568 unsigned char model_num[ATA_ID_PROD_LEN + 1];
569 569
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 233e88693395..2d8334e7921d 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -456,7 +456,7 @@ static int sil24_tag(int tag)
456 456
457static void sil24_dev_config(struct ata_device *dev) 457static void sil24_dev_config(struct ata_device *dev)
458{ 458{
459 void __iomem *port = dev->ap->ioaddr.cmd_addr; 459 void __iomem *port = dev->link->ap->ioaddr.cmd_addr;
460 460
461 if (dev->cdb_len == 16) 461 if (dev->cdb_len == 16)
462 writel(PORT_CS_CDB16, port + PORT_CTRL_STAT); 462 writel(PORT_CS_CDB16, port + PORT_CTRL_STAT);
@@ -609,7 +609,7 @@ static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
609 if (time_after(deadline, jiffies)) 609 if (time_after(deadline, jiffies))
610 timeout_msec = jiffies_to_msecs(deadline - jiffies); 610 timeout_msec = jiffies_to_msecs(deadline - jiffies);
611 611
612 ata_tf_init(ap->device, &tf); /* doesn't really matter */ 612 ata_tf_init(ap->link.device, &tf); /* doesn't really matter */
613 rc = sil24_exec_polled_cmd(ap, pmp, &tf, 0, PRB_CTRL_SRST, 613 rc = sil24_exec_polled_cmd(ap, pmp, &tf, 0, PRB_CTRL_SRST,
614 timeout_msec); 614 timeout_msec);
615 if (rc == -EBUSY) { 615 if (rc == -EBUSY) {
@@ -804,7 +804,7 @@ static void sil24_error_intr(struct ata_port *ap)
804{ 804{
805 void __iomem *port = ap->ioaddr.cmd_addr; 805 void __iomem *port = ap->ioaddr.cmd_addr;
806 struct sil24_port_priv *pp = ap->private_data; 806 struct sil24_port_priv *pp = ap->private_data;
807 struct ata_eh_info *ehi = &ap->eh_info; 807 struct ata_eh_info *ehi = &ap->link.eh_info;
808 int freeze = 0; 808 int freeze = 0;
809 u32 irq_stat; 809 u32 irq_stat;
810 810
@@ -856,7 +856,7 @@ static void sil24_error_intr(struct ata_port *ap)
856 } 856 }
857 857
858 /* record error info */ 858 /* record error info */
859 qc = ata_qc_from_tag(ap, ap->active_tag); 859 qc = ata_qc_from_tag(ap, ap->link.active_tag);
860 if (qc) { 860 if (qc) {
861 sil24_read_tf(ap, qc->tag, &pp->tf); 861 sil24_read_tf(ap, qc->tag, &pp->tf);
862 qc->err_mask |= err_mask; 862 qc->err_mask |= err_mask;
@@ -910,7 +910,7 @@ static inline void sil24_host_intr(struct ata_port *ap)
910 if (rc > 0) 910 if (rc > 0)
911 return; 911 return;
912 if (rc < 0) { 912 if (rc < 0) {
913 struct ata_eh_info *ehi = &ap->eh_info; 913 struct ata_eh_info *ehi = &ap->link.eh_info;
914 ehi->err_mask |= AC_ERR_HSM; 914 ehi->err_mask |= AC_ERR_HSM;
915 ehi->action |= ATA_EH_SOFTRESET; 915 ehi->action |= ATA_EH_SOFTRESET;
916 ata_port_freeze(ap); 916 ata_port_freeze(ap);
@@ -921,7 +921,7 @@ static inline void sil24_host_intr(struct ata_port *ap)
921 if (!(ap->flags & SIL24_FLAG_PCIX_IRQ_WOC) && ata_ratelimit()) 921 if (!(ap->flags & SIL24_FLAG_PCIX_IRQ_WOC) && ata_ratelimit())
922 ata_port_printk(ap, KERN_INFO, "spurious interrupt " 922 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
923 "(slot_stat 0x%x active_tag %d sactive 0x%x)\n", 923 "(slot_stat 0x%x active_tag %d sactive 0x%x)\n",
924 slot_stat, ap->active_tag, ap->sactive); 924 slot_stat, ap->link.active_tag, ap->link.sactive);
925} 925}
926 926
927static irqreturn_t sil24_interrupt(int irq, void *dev_instance) 927static irqreturn_t sil24_interrupt(int irq, void *dev_instance)
@@ -963,7 +963,7 @@ static irqreturn_t sil24_interrupt(int irq, void *dev_instance)
963 963
964static void sil24_error_handler(struct ata_port *ap) 964static void sil24_error_handler(struct ata_port *ap)
965{ 965{
966 struct ata_eh_context *ehc = &ap->eh_context; 966 struct ata_eh_context *ehc = &ap->link.eh_context;
967 967
968 if (sil24_init_port(ap)) { 968 if (sil24_init_port(ap)) {
969 ata_eh_freeze_port(ap); 969 ata_eh_freeze_port(ap);
diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c
index 97aefdd87be4..12691f091933 100644
--- a/drivers/ata/sata_sx4.c
+++ b/drivers/ata/sata_sx4.c
@@ -854,7 +854,7 @@ static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance)
854 !(ap->flags & ATA_FLAG_DISABLED)) { 854 !(ap->flags & ATA_FLAG_DISABLED)) {
855 struct ata_queued_cmd *qc; 855 struct ata_queued_cmd *qc;
856 856
857 qc = ata_qc_from_tag(ap, ap->active_tag); 857 qc = ata_qc_from_tag(ap, ap->link.active_tag);
858 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) 858 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
859 handled += pdc20621_host_intr(ap, qc, (i > 4), 859 handled += pdc20621_host_intr(ap, qc, (i > 4),
860 mmio_base); 860 mmio_base);
@@ -881,7 +881,7 @@ static void pdc_eng_timeout(struct ata_port *ap)
881 881
882 spin_lock_irqsave(&host->lock, flags); 882 spin_lock_irqsave(&host->lock, flags);
883 883
884 qc = ata_qc_from_tag(ap, ap->active_tag); 884 qc = ata_qc_from_tag(ap, ap->link.active_tag);
885 885
886 switch (qc->tf.protocol) { 886 switch (qc->tf.protocol) {
887 case ATA_PROT_DMA: 887 case ATA_PROT_DMA:
diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index 57fd30de8f0d..78a6833af713 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -296,7 +296,7 @@ static void svia_noop_freeze(struct ata_port *ap)
296 */ 296 */
297static int vt6420_prereset(struct ata_port *ap, unsigned long deadline) 297static int vt6420_prereset(struct ata_port *ap, unsigned long deadline)
298{ 298{
299 struct ata_eh_context *ehc = &ap->eh_context; 299 struct ata_eh_context *ehc = &ap->link.eh_context;
300 unsigned long timeout = jiffies + (HZ * 5); 300 unsigned long timeout = jiffies + (HZ * 5);
301 u32 sstatus, scontrol; 301 u32 sstatus, scontrol;
302 int online; 302 int online;
diff --git a/drivers/ata/sata_vsc.c b/drivers/ata/sata_vsc.c
index 1920915dfa2c..9586b8b51cea 100644
--- a/drivers/ata/sata_vsc.c
+++ b/drivers/ata/sata_vsc.c
@@ -240,7 +240,7 @@ static void vsc_port_intr(u8 port_status, struct ata_port *ap)
240 return; 240 return;
241 } 241 }
242 242
243 qc = ata_qc_from_tag(ap, ap->active_tag); 243 qc = ata_qc_from_tag(ap, ap->link.active_tag);
244 if (qc && likely(!(qc->tf.flags & ATA_TFLAG_POLLING))) 244 if (qc && likely(!(qc->tf.flags & ATA_TFLAG_POLLING)))
245 handled = ata_host_intr(ap, qc); 245 handled = ata_host_intr(ap, qc);
246 246
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index f142eafb6fc7..affd77aafb23 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4988,14 +4988,14 @@ static void ipr_ata_phy_reset(struct ata_port *ap)
4988 switch(res->cfgte.proto) { 4988 switch(res->cfgte.proto) {
4989 case IPR_PROTO_SATA: 4989 case IPR_PROTO_SATA:
4990 case IPR_PROTO_SAS_STP: 4990 case IPR_PROTO_SAS_STP:
4991 ap->device[0].class = ATA_DEV_ATA; 4991 ap->link.device[0].class = ATA_DEV_ATA;
4992 break; 4992 break;
4993 case IPR_PROTO_SATA_ATAPI: 4993 case IPR_PROTO_SATA_ATAPI:
4994 case IPR_PROTO_SAS_STP_ATAPI: 4994 case IPR_PROTO_SAS_STP_ATAPI:
4995 ap->device[0].class = ATA_DEV_ATAPI; 4995 ap->link.device[0].class = ATA_DEV_ATAPI;
4996 break; 4996 break;
4997 default: 4997 default:
4998 ap->device[0].class = ATA_DEV_UNKNOWN; 4998 ap->link.device[0].class = ATA_DEV_UNKNOWN;
4999 ap->ops->port_disable(ap); 4999 ap->ops->port_disable(ap);
5000 break; 5000 break;
5001 }; 5001 };
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 5e573efcf0a7..1d6503d85f02 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -249,17 +249,17 @@ static void sas_ata_phy_reset(struct ata_port *ap)
249 switch (dev->sata_dev.command_set) { 249 switch (dev->sata_dev.command_set) {
250 case ATA_COMMAND_SET: 250 case ATA_COMMAND_SET:
251 SAS_DPRINTK("%s: Found ATA device.\n", __FUNCTION__); 251 SAS_DPRINTK("%s: Found ATA device.\n", __FUNCTION__);
252 ap->device[0].class = ATA_DEV_ATA; 252 ap->link.device[0].class = ATA_DEV_ATA;
253 break; 253 break;
254 case ATAPI_COMMAND_SET: 254 case ATAPI_COMMAND_SET:
255 SAS_DPRINTK("%s: Found ATAPI device.\n", __FUNCTION__); 255 SAS_DPRINTK("%s: Found ATAPI device.\n", __FUNCTION__);
256 ap->device[0].class = ATA_DEV_ATAPI; 256 ap->link.device[0].class = ATA_DEV_ATAPI;
257 break; 257 break;
258 default: 258 default:
259 SAS_DPRINTK("%s: Unknown SATA command set: %d.\n", 259 SAS_DPRINTK("%s: Unknown SATA command set: %d.\n",
260 __FUNCTION__, 260 __FUNCTION__,
261 dev->sata_dev.command_set); 261 dev->sata_dev.command_set);
262 ap->device[0].class = ATA_DEV_UNKNOWN; 262 ap->link.device[0].class = ATA_DEV_UNKNOWN;
263 break; 263 break;
264 } 264 }
265 265
@@ -317,7 +317,7 @@ static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
317 dev->sata_dev.serror = val; 317 dev->sata_dev.serror = val;
318 break; 318 break;
319 case SCR_ACTIVE: 319 case SCR_ACTIVE:
320 dev->sata_dev.ap->sactive = val; 320 dev->sata_dev.ap->link.sactive = val;
321 break; 321 break;
322 default: 322 default:
323 return -EINVAL; 323 return -EINVAL;
@@ -342,7 +342,7 @@ static int sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
342 *val = dev->sata_dev.serror; 342 *val = dev->sata_dev.serror;
343 return 0; 343 return 0;
344 case SCR_ACTIVE: 344 case SCR_ACTIVE:
345 *val = dev->sata_dev.ap->sactive; 345 *val = dev->sata_dev.ap->link.sactive;
346 return 0; 346 return 0;
347 default: 347 default:
348 return -EINVAL; 348 return -EINVAL;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index a67bb9075e9b..ca4493125fa0 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -436,7 +436,7 @@ struct ata_ering {
436}; 436};
437 437
438struct ata_device { 438struct ata_device {
439 struct ata_port *ap; 439 struct ata_link *link;
440 unsigned int devno; /* 0 or 1 */ 440 unsigned int devno; /* 0 or 1 */
441 unsigned long flags; /* ATA_DFLAG_xxx */ 441 unsigned long flags; /* ATA_DFLAG_xxx */
442 unsigned int horkage; /* List of broken features */ 442 unsigned int horkage; /* List of broken features */
@@ -510,6 +510,24 @@ struct ata_acpi_gtm {
510 u32 flags; 510 u32 flags;
511} __packed; 511} __packed;
512 512
513struct ata_link {
514 struct ata_port *ap;
515
516 unsigned int active_tag; /* active tag on this link */
517 u32 sactive; /* active NCQ commands */
518
519 unsigned int hw_sata_spd_limit;
520 unsigned int sata_spd_limit;
521 unsigned int sata_spd; /* current SATA PHY speed */
522
523 /* record runtime error info, protected by host_set lock */
524 struct ata_eh_info eh_info;
525 /* EH context */
526 struct ata_eh_context eh_context;
527
528 struct ata_device device[ATA_MAX_DEVICES];
529};
530
513struct ata_port { 531struct ata_port {
514 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ 532 struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
515 const struct ata_port_operations *ops; 533 const struct ata_port_operations *ops;
@@ -533,23 +551,12 @@ struct ata_port {
533 unsigned int mwdma_mask; 551 unsigned int mwdma_mask;
534 unsigned int udma_mask; 552 unsigned int udma_mask;
535 unsigned int cbl; /* cable type; ATA_CBL_xxx */ 553 unsigned int cbl; /* cable type; ATA_CBL_xxx */
536 unsigned int hw_sata_spd_limit;
537 unsigned int sata_spd_limit; /* SATA PHY speed limit */
538 unsigned int sata_spd; /* current SATA PHY speed */
539
540 /* record runtime error info, protected by host lock */
541 struct ata_eh_info eh_info;
542 /* EH context owned by EH */
543 struct ata_eh_context eh_context;
544
545 struct ata_device device[ATA_MAX_DEVICES];
546 554
547 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; 555 struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
548 unsigned long qc_allocated; 556 unsigned long qc_allocated;
549 unsigned int qc_active; 557 unsigned int qc_active;
550 558
551 unsigned int active_tag; 559 struct ata_link link; /* host default link */
552 u32 sactive;
553 560
554 struct ata_port_stats stats; 561 struct ata_port_stats stats;
555 struct ata_host *host; 562 struct ata_host *host;
@@ -912,8 +919,11 @@ extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
912#define ata_port_printk(ap, lv, fmt, args...) \ 919#define ata_port_printk(ap, lv, fmt, args...) \
913 printk(lv"ata%u: "fmt, (ap)->print_id , ##args) 920 printk(lv"ata%u: "fmt, (ap)->print_id , ##args)
914 921
922#define ata_link_printk(link, lv, fmt, args...) \
923 printk(lv"ata%u: "fmt, (link)->ap->print_id , ##args)
924
915#define ata_dev_printk(dev, lv, fmt, args...) \ 925#define ata_dev_printk(dev, lv, fmt, args...) \
916 printk(lv"ata%u.%02u: "fmt, (dev)->ap->print_id, (dev)->devno , ##args) 926 printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->print_id, (dev)->devno , ##args)
917 927
918/* 928/*
919 * ata_eh_info helpers 929 * ata_eh_info helpers
@@ -1149,7 +1159,7 @@ static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
1149{ 1159{
1150 memset(tf, 0, sizeof(*tf)); 1160 memset(tf, 0, sizeof(*tf));
1151 1161
1152 tf->ctl = dev->ap->ctl; 1162 tf->ctl = dev->link->ap->ctl;
1153 if (dev->devno == 0) 1163 if (dev->devno == 0)
1154 tf->device = ATA_DEVICE_OBS; 1164 tf->device = ATA_DEVICE_OBS;
1155 else 1165 else
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 01:28:27 -0500