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author <jgarzik@pretzel.yyz.us>2005-06-03 23:54:56 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-06-03 23:54:56 -0400
commit73561695b2e77473e353a5ae63bab81ed5098d8e (patch)
treed039affaa54d38985e41566e4d62e0aa6a170287 /drivers/scsi
parent6f2f38128170814e151cfedf79532e19cd179567 (diff)
parent8be3de3fd8469154a2b3e18a4712032dac5b4a53 (diff)
Automatic merge of /spare/repo/linux-2.6/.git branch HEAD
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ahci.c3
-rw-r--r--drivers/scsi/aic7xxx/aic7770_osm.c52
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm.c2
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c1403
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.h169
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm_pci.c11
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_proc.c13
-rw-r--r--drivers/scsi/aic7xxx/aiclib.c1
-rw-r--r--drivers/scsi/ata_piix.c18
-rw-r--r--drivers/scsi/ide-scsi.c86
-rw-r--r--drivers/scsi/libata-core.c510
-rw-r--r--drivers/scsi/libata-scsi.c7
-rw-r--r--drivers/scsi/libata.h2
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c24
-rw-r--r--drivers/scsi/sata_nv.c2
-rw-r--r--drivers/scsi/sata_promise.c3
-rw-r--r--drivers/scsi/sata_qstor.c2
-rw-r--r--drivers/scsi/sata_sil.c2
-rw-r--r--drivers/scsi/sata_sis.c1
-rw-r--r--drivers/scsi/sata_svw.c3
-rw-r--r--drivers/scsi/sata_sx4.c2
-rw-r--r--drivers/scsi/sata_uli.c1
-rw-r--r--drivers/scsi/sata_via.c1
-rw-r--r--drivers/scsi/sata_vsc.c2
-rw-r--r--drivers/scsi/scsi_scan.c1
-rw-r--r--drivers/scsi/scsi_transport_spi.c188
26 files changed, 1073 insertions, 1436 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index da5bd33d982d..fc5263c6b102 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -32,6 +32,7 @@
32#include <linux/delay.h> 32#include <linux/delay.h>
33#include <linux/interrupt.h> 33#include <linux/interrupt.h>
34#include <linux/sched.h> 34#include <linux/sched.h>
35#include <linux/dma-mapping.h>
35#include "scsi.h" 36#include "scsi.h"
36#include <scsi/scsi_host.h> 37#include <scsi/scsi_host.h>
37#include <linux/libata.h> 38#include <linux/libata.h>
@@ -289,6 +290,8 @@ static void ahci_host_stop(struct ata_host_set *host_set)
289{ 290{
290 struct ahci_host_priv *hpriv = host_set->private_data; 291 struct ahci_host_priv *hpriv = host_set->private_data;
291 kfree(hpriv); 292 kfree(hpriv);
293
294 ata_host_stop(host_set);
292} 295}
293 296
294static int ahci_port_start(struct ata_port *ap) 297static int ahci_port_start(struct ata_port *ap)
diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index c2b47f2bdffd..682ca0b32b44 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -41,7 +41,6 @@
41 41
42#include "aic7xxx_osm.h" 42#include "aic7xxx_osm.h"
43 43
44#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
45#include <linux/device.h> 44#include <linux/device.h>
46#include <linux/eisa.h> 45#include <linux/eisa.h>
47 46
@@ -62,13 +61,6 @@ static struct eisa_driver aic7770_driver = {
62}; 61};
63 62
64typedef struct device *aic7770_dev_t; 63typedef struct device *aic7770_dev_t;
65#else
66#define MINSLOT 1
67#define NUMSLOTS 16
68#define IDOFFSET 0x80
69
70typedef void *aic7770_dev_t;
71#endif
72 64
73static int aic7770_linux_config(struct aic7770_identity *entry, 65static int aic7770_linux_config(struct aic7770_identity *entry,
74 aic7770_dev_t dev, u_int eisaBase); 66 aic7770_dev_t dev, u_int eisaBase);
@@ -76,7 +68,6 @@ static int aic7770_linux_config(struct aic7770_identity *entry,
76int 68int
77ahc_linux_eisa_init(void) 69ahc_linux_eisa_init(void)
78{ 70{
79#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
80 struct eisa_device_id *eid; 71 struct eisa_device_id *eid;
81 struct aic7770_identity *id; 72 struct aic7770_identity *id;
82 int i; 73 int i;
@@ -110,44 +101,6 @@ ahc_linux_eisa_init(void)
110 eid->sig[0] = 0; 101 eid->sig[0] = 0;
111 102
112 return eisa_driver_register(&aic7770_driver); 103 return eisa_driver_register(&aic7770_driver);
113#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
114 struct aic7770_identity *entry;
115 u_int slot;
116 u_int eisaBase;
117 u_int i;
118 int ret = -ENODEV;
119
120 if (aic7xxx_probe_eisa_vl == 0)
121 return ret;
122
123 eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
124 for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
125 uint32_t eisa_id;
126 size_t id_size;
127
128 if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
129 continue;
130
131 eisa_id = 0;
132 id_size = sizeof(eisa_id);
133 for (i = 0; i < 4; i++) {
134 /* VLcards require priming*/
135 outb(0x80 + i, eisaBase + IDOFFSET);
136 eisa_id |= inb(eisaBase + IDOFFSET + i)
137 << ((id_size-i-1) * 8);
138 }
139 release_region(eisaBase, AHC_EISA_IOSIZE);
140 if (eisa_id & 0x80000000)
141 continue; /* no EISA card in slot */
142
143 entry = aic7770_find_device(eisa_id);
144 if (entry != NULL) {
145 aic7770_linux_config(entry, NULL, eisaBase);
146 ret = 0;
147 }
148 }
149 return ret;
150#endif
151} 104}
152 105
153void 106void
@@ -187,11 +140,10 @@ aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
187 ahc_free(ahc); 140 ahc_free(ahc);
188 return (error); 141 return (error);
189 } 142 }
190#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) 143
191 dev->driver_data = (void *)ahc; 144 dev->driver_data = (void *)ahc;
192 if (aic7xxx_detect_complete) 145 if (aic7xxx_detect_complete)
193 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template); 146 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
194#endif
195 return (error); 147 return (error);
196} 148}
197 149
@@ -225,7 +177,6 @@ aic7770_map_int(struct ahc_softc *ahc, u_int irq)
225 return (-error); 177 return (-error);
226} 178}
227 179
228#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
229static int 180static int
230aic7770_eisa_dev_probe(struct device *dev) 181aic7770_eisa_dev_probe(struct device *dev)
231{ 182{
@@ -261,4 +212,3 @@ aic7770_eisa_dev_remove(struct device *dev)
261 212
262 return (0); 213 return (0);
263} 214}
264#endif
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 550c9921691a..7c02b7dc7098 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -2488,7 +2488,7 @@ ahd_linux_dv_thread(void *data)
2488 sprintf(current->comm, "ahd_dv_%d", ahd->unit); 2488 sprintf(current->comm, "ahd_dv_%d", ahd->unit);
2489#else 2489#else
2490 daemonize("ahd_dv_%d", ahd->unit); 2490 daemonize("ahd_dv_%d", ahd->unit);
2491 current->flags |= PF_FREEZE; 2491 current->flags |= PF_NOFREEZE;
2492#endif 2492#endif
2493 unlock_kernel(); 2493 unlock_kernel();
2494 2494
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d978e4a3e973..c13e56320010 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -134,11 +134,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
134#include "aiclib.c" 134#include "aiclib.c"
135 135
136#include <linux/init.h> /* __setup */ 136#include <linux/init.h> /* __setup */
137
138#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
139#include "sd.h" /* For geometry detection */
140#endif
141
142#include <linux/mm.h> /* For fetching system memory size */ 137#include <linux/mm.h> /* For fetching system memory size */
143#include <linux/blkdev.h> /* For block_size() */ 138#include <linux/blkdev.h> /* For block_size() */
144#include <linux/delay.h> /* For ssleep/msleep */ 139#include <linux/delay.h> /* For ssleep/msleep */
@@ -148,11 +143,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
148 */ 143 */
149spinlock_t ahc_list_spinlock; 144spinlock_t ahc_list_spinlock;
150 145
151#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
152/* For dynamic sglist size calculation. */
153u_int ahc_linux_nseg;
154#endif
155
156/* 146/*
157 * Set this to the delay in seconds after SCSI bus reset. 147 * Set this to the delay in seconds after SCSI bus reset.
158 * Note, we honor this only for the initial bus reset. 148 * Note, we honor this only for the initial bus reset.
@@ -436,15 +426,12 @@ static void ahc_linux_handle_scsi_status(struct ahc_softc *,
436 struct ahc_linux_device *, 426 struct ahc_linux_device *,
437 struct scb *); 427 struct scb *);
438static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, 428static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
439 Scsi_Cmnd *cmd); 429 struct scsi_cmnd *cmd);
440static void ahc_linux_sem_timeout(u_long arg); 430static void ahc_linux_sem_timeout(u_long arg);
441static void ahc_linux_freeze_simq(struct ahc_softc *ahc); 431static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
442static void ahc_linux_release_simq(u_long arg); 432static void ahc_linux_release_simq(u_long arg);
443static void ahc_linux_dev_timed_unfreeze(u_long arg); 433static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
444static int ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag);
445static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc); 434static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
446static void ahc_linux_size_nseg(void);
447static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
448static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc, 435static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
449 struct ahc_devinfo *devinfo); 436 struct ahc_devinfo *devinfo);
450static void ahc_linux_device_queue_depth(struct ahc_softc *ahc, 437static void ahc_linux_device_queue_depth(struct ahc_softc *ahc,
@@ -458,54 +445,27 @@ static struct ahc_linux_device* ahc_linux_alloc_device(struct ahc_softc*,
458 u_int); 445 u_int);
459static void ahc_linux_free_device(struct ahc_softc*, 446static void ahc_linux_free_device(struct ahc_softc*,
460 struct ahc_linux_device*); 447 struct ahc_linux_device*);
461static void ahc_linux_run_device_queue(struct ahc_softc*, 448static int ahc_linux_run_command(struct ahc_softc*,
462 struct ahc_linux_device*); 449 struct ahc_linux_device *,
450 struct scsi_cmnd *);
463static void ahc_linux_setup_tag_info_global(char *p); 451static void ahc_linux_setup_tag_info_global(char *p);
464static aic_option_callback_t ahc_linux_setup_tag_info; 452static aic_option_callback_t ahc_linux_setup_tag_info;
465static int aic7xxx_setup(char *s); 453static int aic7xxx_setup(char *s);
466static int ahc_linux_next_unit(void); 454static int ahc_linux_next_unit(void);
467static void ahc_runq_tasklet(unsigned long data);
468static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
469 455
470/********************************* Inlines ************************************/ 456/********************************* Inlines ************************************/
471static __inline void ahc_schedule_runq(struct ahc_softc *ahc);
472static __inline struct ahc_linux_device* 457static __inline struct ahc_linux_device*
473 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, 458 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
474 u_int target, u_int lun, int alloc); 459 u_int target, u_int lun);
475static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
476static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc,
477 struct ahc_linux_device *dev);
478static __inline struct ahc_linux_device *
479 ahc_linux_next_device_to_run(struct ahc_softc *ahc);
480static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc);
481static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*); 460static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
482 461
483static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb, 462static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
484 struct ahc_dma_seg *sg, 463 struct ahc_dma_seg *sg,
485 dma_addr_t addr, bus_size_t len); 464 dma_addr_t addr, bus_size_t len);
486 465
487static __inline void
488ahc_schedule_completeq(struct ahc_softc *ahc)
489{
490 if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
491 ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
492 ahc->platform_data->completeq_timer.expires = jiffies;
493 add_timer(&ahc->platform_data->completeq_timer);
494 }
495}
496
497/*
498 * Must be called with our lock held.
499 */
500static __inline void
501ahc_schedule_runq(struct ahc_softc *ahc)
502{
503 tasklet_schedule(&ahc->platform_data->runq_tasklet);
504}
505
506static __inline struct ahc_linux_device* 466static __inline struct ahc_linux_device*
507ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target, 467ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
508 u_int lun, int alloc) 468 u_int lun)
509{ 469{
510 struct ahc_linux_target *targ; 470 struct ahc_linux_target *targ;
511 struct ahc_linux_device *dev; 471 struct ahc_linux_device *dev;
@@ -515,102 +475,15 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
515 if (channel != 0) 475 if (channel != 0)
516 target_offset += 8; 476 target_offset += 8;
517 targ = ahc->platform_data->targets[target_offset]; 477 targ = ahc->platform_data->targets[target_offset];
518 if (targ == NULL) { 478 BUG_ON(targ == NULL);
519 if (alloc != 0) {
520 targ = ahc_linux_alloc_target(ahc, channel, target);
521 if (targ == NULL)
522 return (NULL);
523 } else
524 return (NULL);
525 }
526 dev = targ->devices[lun]; 479 dev = targ->devices[lun];
527 if (dev == NULL && alloc != 0) 480 return dev;
528 dev = ahc_linux_alloc_device(ahc, targ, lun);
529 return (dev);
530}
531
532#define AHC_LINUX_MAX_RETURNED_ERRORS 4
533static struct ahc_cmd *
534ahc_linux_run_complete_queue(struct ahc_softc *ahc)
535{
536 struct ahc_cmd *acmd;
537 u_long done_flags;
538 int with_errors;
539
540 with_errors = 0;
541 ahc_done_lock(ahc, &done_flags);
542 while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
543 Scsi_Cmnd *cmd;
544
545 if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
546 /*
547 * Linux uses stack recursion to requeue
548 * commands that need to be retried. Avoid
549 * blowing out the stack by "spoon feeding"
550 * commands that completed with error back
551 * the operating system in case they are going
552 * to be retried. "ick"
553 */
554 ahc_schedule_completeq(ahc);
555 break;
556 }
557 TAILQ_REMOVE(&ahc->platform_data->completeq,
558 acmd, acmd_links.tqe);
559 cmd = &acmd_scsi_cmd(acmd);
560 cmd->host_scribble = NULL;
561 if (ahc_cmd_get_transaction_status(cmd) != DID_OK
562 || (cmd->result & 0xFF) != SCSI_STATUS_OK)
563 with_errors++;
564
565 cmd->scsi_done(cmd);
566 }
567 ahc_done_unlock(ahc, &done_flags);
568 return (acmd);
569}
570
571static __inline void
572ahc_linux_check_device_queue(struct ahc_softc *ahc,
573 struct ahc_linux_device *dev)
574{
575 if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0
576 && dev->active == 0) {
577 dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY;
578 dev->qfrozen--;
579 }
580
581 if (TAILQ_FIRST(&dev->busyq) == NULL
582 || dev->openings == 0 || dev->qfrozen != 0)
583 return;
584
585 ahc_linux_run_device_queue(ahc, dev);
586}
587
588static __inline struct ahc_linux_device *
589ahc_linux_next_device_to_run(struct ahc_softc *ahc)
590{
591
592 if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
593 || (ahc->platform_data->qfrozen != 0))
594 return (NULL);
595 return (TAILQ_FIRST(&ahc->platform_data->device_runq));
596}
597
598static __inline void
599ahc_linux_run_device_queues(struct ahc_softc *ahc)
600{
601 struct ahc_linux_device *dev;
602
603 while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
604 TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
605 dev->flags &= ~AHC_DEV_ON_RUN_LIST;
606 ahc_linux_check_device_queue(ahc, dev);
607 }
608} 481}
609 482
610static __inline void 483static __inline void
611ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb) 484ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
612{ 485{
613 Scsi_Cmnd *cmd; 486 struct scsi_cmnd *cmd;
614 487
615 cmd = scb->io_ctx; 488 cmd = scb->io_ctx;
616 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE); 489 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
@@ -650,109 +523,15 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
650 return (consumed); 523 return (consumed);
651} 524}
652 525
653/************************ Host template entry points *************************/
654static int ahc_linux_detect(Scsi_Host_Template *);
655static int ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
656static const char *ahc_linux_info(struct Scsi_Host *);
657#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
658static int ahc_linux_slave_alloc(Scsi_Device *);
659static int ahc_linux_slave_configure(Scsi_Device *);
660static void ahc_linux_slave_destroy(Scsi_Device *);
661#if defined(__i386__)
662static int ahc_linux_biosparam(struct scsi_device*,
663 struct block_device*,
664 sector_t, int[]);
665#endif
666#else
667static int ahc_linux_release(struct Scsi_Host *);
668static void ahc_linux_select_queue_depth(struct Scsi_Host *host,
669 Scsi_Device *scsi_devs);
670#if defined(__i386__)
671static int ahc_linux_biosparam(Disk *, kdev_t, int[]);
672#endif
673#endif
674static int ahc_linux_bus_reset(Scsi_Cmnd *);
675static int ahc_linux_dev_reset(Scsi_Cmnd *);
676static int ahc_linux_abort(Scsi_Cmnd *);
677
678/*
679 * Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg).
680 *
681 * In pre-2.5.X...
682 * The midlayer allocates an S/G array dynamically when a command is issued
683 * using SCSI malloc. This array, which is in an OS dependent format that
684 * must later be copied to our private S/G list, is sized to house just the
685 * number of segments needed for the current transfer. Since the code that
686 * sizes the SCSI malloc pool does not take into consideration fragmentation
687 * of the pool, executing transactions numbering just a fraction of our
688 * concurrent transaction limit with list lengths aproaching AHC_NSEG will
689 * quickly depleat the SCSI malloc pool of usable space. Unfortunately, the
690 * mid-layer does not properly handle this scsi malloc failures for the S/G
691 * array and the result can be a lockup of the I/O subsystem. We try to size
692 * our S/G list so that it satisfies our drivers allocation requirements in
693 * addition to avoiding fragmentation of the SCSI malloc pool.
694 */
695static void
696ahc_linux_size_nseg(void)
697{
698#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
699 u_int cur_size;
700 u_int best_size;
701
702 /*
703 * The SCSI allocator rounds to the nearest 512 bytes
704 * an cannot allocate across a page boundary. Our algorithm
705 * is to start at 1K of scsi malloc space per-command and
706 * loop through all factors of the PAGE_SIZE and pick the best.
707 */
708 best_size = 0;
709 for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) {
710 u_int nseg;
711
712 nseg = cur_size / sizeof(struct scatterlist);
713 if (nseg < AHC_LINUX_MIN_NSEG)
714 continue;
715
716 if (best_size == 0) {
717 best_size = cur_size;
718 ahc_linux_nseg = nseg;
719 } else {
720 u_int best_rem;
721 u_int cur_rem;
722
723 /*
724 * Compare the traits of the current "best_size"
725 * with the current size to determine if the
726 * current size is a better size.
727 */
728 best_rem = best_size % sizeof(struct scatterlist);
729 cur_rem = cur_size % sizeof(struct scatterlist);
730 if (cur_rem < best_rem) {
731 best_size = cur_size;
732 ahc_linux_nseg = nseg;
733 }
734 }
735 }
736#endif
737}
738
739/* 526/*
740 * Try to detect an Adaptec 7XXX controller. 527 * Try to detect an Adaptec 7XXX controller.
741 */ 528 */
742static int 529static int
743ahc_linux_detect(Scsi_Host_Template *template) 530ahc_linux_detect(struct scsi_host_template *template)
744{ 531{
745 struct ahc_softc *ahc; 532 struct ahc_softc *ahc;
746 int found = 0; 533 int found = 0;
747 534
748#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
749 /*
750 * It is a bug that the upper layer takes
751 * this lock just prior to calling us.
752 */
753 spin_unlock_irq(&io_request_lock);
754#endif
755
756 /* 535 /*
757 * Sanity checking of Linux SCSI data structures so 536 * Sanity checking of Linux SCSI data structures so
758 * that some of our hacks^H^H^H^H^Hassumptions aren't 537 * that some of our hacks^H^H^H^H^Hassumptions aren't
@@ -764,7 +543,6 @@ ahc_linux_detect(Scsi_Host_Template *template)
764 printf("ahc_linux_detect: Unable to attach\n"); 543 printf("ahc_linux_detect: Unable to attach\n");
765 return (0); 544 return (0);
766 } 545 }
767 ahc_linux_size_nseg();
768 /* 546 /*
769 * If we've been passed any parameters, process them now. 547 * If we've been passed any parameters, process them now.
770 */ 548 */
@@ -793,48 +571,11 @@ ahc_linux_detect(Scsi_Host_Template *template)
793 found++; 571 found++;
794 } 572 }
795 573
796#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
797 spin_lock_irq(&io_request_lock);
798#endif
799 aic7xxx_detect_complete++; 574 aic7xxx_detect_complete++;
800 575
801 return (found); 576 return (found);
802} 577}
803 578
804#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
805/*
806 * Free the passed in Scsi_Host memory structures prior to unloading the
807 * module.
808 */
809int
810ahc_linux_release(struct Scsi_Host * host)
811{
812 struct ahc_softc *ahc;
813 u_long l;
814
815 ahc_list_lock(&l);
816 if (host != NULL) {
817
818 /*
819 * We should be able to just perform
820 * the free directly, but check our
821 * list for extra sanity.
822 */
823 ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata);
824 if (ahc != NULL) {
825 u_long s;
826
827 ahc_lock(ahc, &s);
828 ahc_intr_enable(ahc, FALSE);
829 ahc_unlock(ahc, &s);
830 ahc_free(ahc);
831 }
832 }
833 ahc_list_unlock(&l);
834 return (0);
835}
836#endif
837
838/* 579/*
839 * Return a string describing the driver. 580 * Return a string describing the driver.
840 */ 581 */
@@ -867,11 +608,10 @@ ahc_linux_info(struct Scsi_Host *host)
867 * Queue an SCB to the controller. 608 * Queue an SCB to the controller.
868 */ 609 */
869static int 610static int
870ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *)) 611ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
871{ 612{
872 struct ahc_softc *ahc; 613 struct ahc_softc *ahc;
873 struct ahc_linux_device *dev; 614 struct ahc_linux_device *dev;
874 u_long flags;
875 615
876 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 616 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
877 617
@@ -880,205 +620,152 @@ ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
880 */ 620 */
881 cmd->scsi_done = scsi_done; 621 cmd->scsi_done = scsi_done;
882 622
883 ahc_midlayer_entrypoint_lock(ahc, &flags);
884
885 /* 623 /*
886 * Close the race of a command that was in the process of 624 * Close the race of a command that was in the process of
887 * being queued to us just as our simq was frozen. Let 625 * being queued to us just as our simq was frozen. Let
888 * DV commands through so long as we are only frozen to 626 * DV commands through so long as we are only frozen to
889 * perform DV. 627 * perform DV.
890 */ 628 */
891 if (ahc->platform_data->qfrozen != 0) { 629 if (ahc->platform_data->qfrozen != 0)
630 return SCSI_MLQUEUE_HOST_BUSY;
892 631
893 ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
894 ahc_linux_queue_cmd_complete(ahc, cmd);
895 ahc_schedule_completeq(ahc);
896 ahc_midlayer_entrypoint_unlock(ahc, &flags);
897 return (0);
898 }
899 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, 632 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
900 cmd->device->lun, /*alloc*/TRUE); 633 cmd->device->lun);
901 if (dev == NULL) { 634 BUG_ON(dev == NULL);
902 ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL); 635
903 ahc_linux_queue_cmd_complete(ahc, cmd);
904 ahc_schedule_completeq(ahc);
905 ahc_midlayer_entrypoint_unlock(ahc, &flags);
906 printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n",
907 ahc_name(ahc));
908 return (0);
909 }
910 cmd->result = CAM_REQ_INPROG << 16; 636 cmd->result = CAM_REQ_INPROG << 16;
911 TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe); 637
912 if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) { 638 return ahc_linux_run_command(ahc, dev, cmd);
913 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
914 dev->flags |= AHC_DEV_ON_RUN_LIST;
915 ahc_linux_run_device_queues(ahc);
916 }
917 ahc_midlayer_entrypoint_unlock(ahc, &flags);
918 return (0);
919} 639}
920 640
921#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
922static int 641static int
923ahc_linux_slave_alloc(Scsi_Device *device) 642ahc_linux_slave_alloc(struct scsi_device *device)
924{ 643{
925 struct ahc_softc *ahc; 644 struct ahc_softc *ahc;
645 struct ahc_linux_target *targ;
646 struct scsi_target *starget = device->sdev_target;
647 struct ahc_linux_device *dev;
648 unsigned int target_offset;
649 unsigned long flags;
650 int retval = -ENOMEM;
651
652 target_offset = starget->id;
653 if (starget->channel != 0)
654 target_offset += 8;
926 655
927 ahc = *((struct ahc_softc **)device->host->hostdata); 656 ahc = *((struct ahc_softc **)device->host->hostdata);
928 if (bootverbose) 657 if (bootverbose)
929 printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id); 658 printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
930 return (0); 659 ahc_lock(ahc, &flags);
660 targ = ahc->platform_data->targets[target_offset];
661 if (targ == NULL) {
662 struct seeprom_config *sc;
663
664 targ = ahc_linux_alloc_target(ahc, starget->channel,
665 starget->id);
666 sc = ahc->seep_config;
667 if (targ == NULL)
668 goto out;
669
670 if (sc) {
671 unsigned short scsirate;
672 struct ahc_devinfo devinfo;
673 struct ahc_initiator_tinfo *tinfo;
674 struct ahc_tmode_tstate *tstate;
675 char channel = starget->channel + 'A';
676 unsigned int our_id = ahc->our_id;
677
678 if (starget->channel)
679 our_id = ahc->our_id_b;
680
681 if ((ahc->features & AHC_ULTRA2) != 0) {
682 scsirate = sc->device_flags[target_offset] & CFXFER;
683 } else {
684 scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
685 if (sc->device_flags[target_offset] & CFSYNCH)
686 scsirate |= SOFS;
687 }
688 if (sc->device_flags[target_offset] & CFWIDEB) {
689 scsirate |= WIDEXFER;
690 spi_max_width(starget) = 1;
691 } else
692 spi_max_width(starget) = 0;
693 spi_min_period(starget) =
694 ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
695 tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
696 targ->target, &tstate);
697 ahc_compile_devinfo(&devinfo, our_id, targ->target,
698 CAM_LUN_WILDCARD, channel,
699 ROLE_INITIATOR);
700 ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
701 AHC_TRANS_GOAL, /*paused*/FALSE);
702 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
703 AHC_TRANS_GOAL, /*paused*/FALSE);
704 }
705
706 }
707 dev = targ->devices[device->lun];
708 if (dev == NULL) {
709 dev = ahc_linux_alloc_device(ahc, targ, device->lun);
710 if (dev == NULL)
711 goto out;
712 }
713 retval = 0;
714
715 out:
716 ahc_unlock(ahc, &flags);
717 return retval;
931} 718}
932 719
933static int 720static int
934ahc_linux_slave_configure(Scsi_Device *device) 721ahc_linux_slave_configure(struct scsi_device *device)
935{ 722{
936 struct ahc_softc *ahc; 723 struct ahc_softc *ahc;
937 struct ahc_linux_device *dev; 724 struct ahc_linux_device *dev;
938 u_long flags;
939 725
940 ahc = *((struct ahc_softc **)device->host->hostdata); 726 ahc = *((struct ahc_softc **)device->host->hostdata);
727
941 if (bootverbose) 728 if (bootverbose)
942 printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id); 729 printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
943 ahc_midlayer_entrypoint_lock(ahc, &flags); 730
944 /* 731 dev = ahc_linux_get_device(ahc, device->channel, device->id,
945 * Since Linux has attached to the device, configure 732 device->lun);
946 * it so we don't free and allocate the device 733 dev->scsi_device = device;
947 * structure on every command. 734 ahc_linux_device_queue_depth(ahc, dev);
948 */
949 dev = ahc_linux_get_device(ahc, device->channel,
950 device->id, device->lun,
951 /*alloc*/TRUE);
952 if (dev != NULL) {
953 dev->flags &= ~AHC_DEV_UNCONFIGURED;
954 dev->scsi_device = device;
955 ahc_linux_device_queue_depth(ahc, dev);
956 }
957 ahc_midlayer_entrypoint_unlock(ahc, &flags);
958 735
959 /* Initial Domain Validation */ 736 /* Initial Domain Validation */
960 if (!spi_initial_dv(device->sdev_target)) 737 if (!spi_initial_dv(device->sdev_target))
961 spi_dv_device(device); 738 spi_dv_device(device);
962 739
963 return (0); 740 return 0;
964} 741}
965 742
966static void 743static void
967ahc_linux_slave_destroy(Scsi_Device *device) 744ahc_linux_slave_destroy(struct scsi_device *device)
968{ 745{
969 struct ahc_softc *ahc; 746 struct ahc_softc *ahc;
970 struct ahc_linux_device *dev; 747 struct ahc_linux_device *dev;
971 u_long flags;
972 748
973 ahc = *((struct ahc_softc **)device->host->hostdata); 749 ahc = *((struct ahc_softc **)device->host->hostdata);
974 if (bootverbose) 750 if (bootverbose)
975 printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id); 751 printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
976 ahc_midlayer_entrypoint_lock(ahc, &flags);
977 dev = ahc_linux_get_device(ahc, device->channel, 752 dev = ahc_linux_get_device(ahc, device->channel,
978 device->id, device->lun, 753 device->id, device->lun);
979 /*alloc*/FALSE);
980 /*
981 * Filter out "silly" deletions of real devices by only
982 * deleting devices that have had slave_configure()
983 * called on them. All other devices that have not
984 * been configured will automatically be deleted by
985 * the refcounting process.
986 */
987 if (dev != NULL
988 && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
989 dev->flags |= AHC_DEV_UNCONFIGURED;
990 if (TAILQ_EMPTY(&dev->busyq)
991 && dev->active == 0
992 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
993 ahc_linux_free_device(ahc, dev);
994 }
995 ahc_midlayer_entrypoint_unlock(ahc, &flags);
996}
997#else
998/*
999 * Sets the queue depth for each SCSI device hanging
1000 * off the input host adapter.
1001 */
1002static void
1003ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
1004{
1005 Scsi_Device *device;
1006 Scsi_Device *ldev;
1007 struct ahc_softc *ahc;
1008 u_long flags;
1009 754
1010 ahc = *((struct ahc_softc **)host->hostdata); 755 BUG_ON(dev->active);
1011 ahc_lock(ahc, &flags);
1012 for (device = scsi_devs; device != NULL; device = device->next) {
1013 756
1014 /* 757 ahc_linux_free_device(ahc, dev);
1015 * Watch out for duplicate devices. This works around
1016 * some quirks in how the SCSI scanning code does its
1017 * device management.
1018 */
1019 for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
1020 if (ldev->host == device->host
1021 && ldev->channel == device->channel
1022 && ldev->id == device->id
1023 && ldev->lun == device->lun)
1024 break;
1025 }
1026 /* Skip duplicate. */
1027 if (ldev != device)
1028 continue;
1029
1030 if (device->host == host) {
1031 struct ahc_linux_device *dev;
1032
1033 /*
1034 * Since Linux has attached to the device, configure
1035 * it so we don't free and allocate the device
1036 * structure on every command.
1037 */
1038 dev = ahc_linux_get_device(ahc, device->channel,
1039 device->id, device->lun,
1040 /*alloc*/TRUE);
1041 if (dev != NULL) {
1042 dev->flags &= ~AHC_DEV_UNCONFIGURED;
1043 dev->scsi_device = device;
1044 ahc_linux_device_queue_depth(ahc, dev);
1045 device->queue_depth = dev->openings
1046 + dev->active;
1047 if ((dev->flags & (AHC_DEV_Q_BASIC
1048 | AHC_DEV_Q_TAGGED)) == 0) {
1049 /*
1050 * We allow the OS to queue 2 untagged
1051 * transactions to us at any time even
1052 * though we can only execute them
1053 * serially on the controller/device.
1054 * This should remove some latency.
1055 */
1056 device->queue_depth = 2;
1057 }
1058 }
1059 }
1060 }
1061 ahc_unlock(ahc, &flags);
1062} 758}
1063#endif
1064 759
1065#if defined(__i386__) 760#if defined(__i386__)
1066/* 761/*
1067 * Return the disk geometry for the given SCSI device. 762 * Return the disk geometry for the given SCSI device.
1068 */ 763 */
1069static int 764static int
1070#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1071ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, 765ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1072 sector_t capacity, int geom[]) 766 sector_t capacity, int geom[])
1073{ 767{
1074 uint8_t *bh; 768 uint8_t *bh;
1075#else
1076ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1077{
1078 struct scsi_device *sdev = disk->device;
1079 u_long capacity = disk->capacity;
1080 struct buffer_head *bh;
1081#endif
1082 int heads; 769 int heads;
1083 int sectors; 770 int sectors;
1084 int cylinders; 771 int cylinders;
@@ -1090,22 +777,11 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1090 ahc = *((struct ahc_softc **)sdev->host->hostdata); 777 ahc = *((struct ahc_softc **)sdev->host->hostdata);
1091 channel = sdev->channel; 778 channel = sdev->channel;
1092 779
1093#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1094 bh = scsi_bios_ptable(bdev); 780 bh = scsi_bios_ptable(bdev);
1095#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
1096 bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
1097#else
1098 bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
1099#endif
1100
1101 if (bh) { 781 if (bh) {
1102 ret = scsi_partsize(bh, capacity, 782 ret = scsi_partsize(bh, capacity,
1103 &geom[2], &geom[0], &geom[1]); 783 &geom[2], &geom[0], &geom[1]);
1104#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1105 kfree(bh); 784 kfree(bh);
1106#else
1107 brelse(bh);
1108#endif
1109 if (ret != -1) 785 if (ret != -1)
1110 return (ret); 786 return (ret);
1111 } 787 }
@@ -1135,7 +811,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1135 * Abort the current SCSI command(s). 811 * Abort the current SCSI command(s).
1136 */ 812 */
1137static int 813static int
1138ahc_linux_abort(Scsi_Cmnd *cmd) 814ahc_linux_abort(struct scsi_cmnd *cmd)
1139{ 815{
1140 int error; 816 int error;
1141 817
@@ -1149,7 +825,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd)
1149 * Attempt to send a target reset message to the device that timed out. 825 * Attempt to send a target reset message to the device that timed out.
1150 */ 826 */
1151static int 827static int
1152ahc_linux_dev_reset(Scsi_Cmnd *cmd) 828ahc_linux_dev_reset(struct scsi_cmnd *cmd)
1153{ 829{
1154 int error; 830 int error;
1155 831
@@ -1163,18 +839,14 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd)
1163 * Reset the SCSI bus. 839 * Reset the SCSI bus.
1164 */ 840 */
1165static int 841static int
1166ahc_linux_bus_reset(Scsi_Cmnd *cmd) 842ahc_linux_bus_reset(struct scsi_cmnd *cmd)
1167{ 843{
1168 struct ahc_softc *ahc; 844 struct ahc_softc *ahc;
1169 u_long s;
1170 int found; 845 int found;
1171 846
1172 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 847 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
1173 ahc_midlayer_entrypoint_lock(ahc, &s);
1174 found = ahc_reset_channel(ahc, cmd->device->channel + 'A', 848 found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
1175 /*initiate reset*/TRUE); 849 /*initiate reset*/TRUE);
1176 ahc_linux_run_complete_queue(ahc);
1177 ahc_midlayer_entrypoint_unlock(ahc, &s);
1178 850
1179 if (bootverbose) 851 if (bootverbose)
1180 printf("%s: SCSI bus reset delivered. " 852 printf("%s: SCSI bus reset delivered. "
@@ -1183,7 +855,7 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd)
1183 return SUCCESS; 855 return SUCCESS;
1184} 856}
1185 857
1186Scsi_Host_Template aic7xxx_driver_template = { 858struct scsi_host_template aic7xxx_driver_template = {
1187 .module = THIS_MODULE, 859 .module = THIS_MODULE,
1188 .name = "aic7xxx", 860 .name = "aic7xxx",
1189 .proc_info = ahc_linux_proc_info, 861 .proc_info = ahc_linux_proc_info,
@@ -1206,33 +878,6 @@ Scsi_Host_Template aic7xxx_driver_template = {
1206 878
1207/**************************** Tasklet Handler *********************************/ 879/**************************** Tasklet Handler *********************************/
1208 880
1209/*
1210 * In 2.4.X and above, this routine is called from a tasklet,
1211 * so we must re-acquire our lock prior to executing this code.
1212 * In all prior kernels, ahc_schedule_runq() calls this routine
1213 * directly and ahc_schedule_runq() is called with our lock held.
1214 */
1215static void
1216ahc_runq_tasklet(unsigned long data)
1217{
1218 struct ahc_softc* ahc;
1219 struct ahc_linux_device *dev;
1220 u_long flags;
1221
1222 ahc = (struct ahc_softc *)data;
1223 ahc_lock(ahc, &flags);
1224 while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
1225
1226 TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
1227 dev->flags &= ~AHC_DEV_ON_RUN_LIST;
1228 ahc_linux_check_device_queue(ahc, dev);
1229 /* Yeild to our interrupt handler */
1230 ahc_unlock(ahc, &flags);
1231 ahc_lock(ahc, &flags);
1232 }
1233 ahc_unlock(ahc, &flags);
1234}
1235
1236/******************************** Macros **************************************/ 881/******************************** Macros **************************************/
1237#define BUILD_SCSIID(ahc, cmd) \ 882#define BUILD_SCSIID(ahc, cmd) \
1238 ((((cmd)->device->id << TID_SHIFT) & TID) \ 883 ((((cmd)->device->id << TID_SHIFT) & TID) \
@@ -1278,37 +923,11 @@ int
1278ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr, 923ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
1279 int flags, bus_dmamap_t *mapp) 924 int flags, bus_dmamap_t *mapp)
1280{ 925{
1281 bus_dmamap_t map;
1282
1283 map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
1284 if (map == NULL)
1285 return (ENOMEM);
1286 /*
1287 * Although we can dma data above 4GB, our
1288 * "consistent" memory is below 4GB for
1289 * space efficiency reasons (only need a 4byte
1290 * address). For this reason, we have to reset
1291 * our dma mask when doing allocations.
1292 */
1293 if (ahc->dev_softc != NULL)
1294 if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
1295 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
1296 kfree(map);
1297 return (ENODEV);
1298 }
1299 *vaddr = pci_alloc_consistent(ahc->dev_softc, 926 *vaddr = pci_alloc_consistent(ahc->dev_softc,
1300 dmat->maxsize, &map->bus_addr); 927 dmat->maxsize, mapp);
1301 if (ahc->dev_softc != NULL)
1302 if (pci_set_dma_mask(ahc->dev_softc,
1303 ahc->platform_data->hw_dma_mask)) {
1304 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
1305 kfree(map);
1306 return (ENODEV);
1307 }
1308 if (*vaddr == NULL) 928 if (*vaddr == NULL)
1309 return (ENOMEM); 929 return ENOMEM;
1310 *mapp = map; 930 return 0;
1311 return(0);
1312} 931}
1313 932
1314void 933void
@@ -1316,7 +935,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
1316 void* vaddr, bus_dmamap_t map) 935 void* vaddr, bus_dmamap_t map)
1317{ 936{
1318 pci_free_consistent(ahc->dev_softc, dmat->maxsize, 937 pci_free_consistent(ahc->dev_softc, dmat->maxsize,
1319 vaddr, map->bus_addr); 938 vaddr, map);
1320} 939}
1321 940
1322int 941int
@@ -1330,7 +949,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
1330 */ 949 */
1331 bus_dma_segment_t stack_sg; 950 bus_dma_segment_t stack_sg;
1332 951
1333 stack_sg.ds_addr = map->bus_addr; 952 stack_sg.ds_addr = map;
1334 stack_sg.ds_len = dmat->maxsize; 953 stack_sg.ds_len = dmat->maxsize;
1335 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); 954 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
1336 return (0); 955 return (0);
@@ -1339,12 +958,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
1339void 958void
1340ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map) 959ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
1341{ 960{
1342 /*
1343 * The map may is NULL in our < 2.3.X implementation.
1344 * Now it's 2.6.5, but just in case...
1345 */
1346 BUG_ON(map == NULL);
1347 free(map, M_DEVBUF);
1348} 961}
1349 962
1350int 963int
@@ -1550,7 +1163,7 @@ __setup("aic7xxx=", aic7xxx_setup);
1550uint32_t aic7xxx_verbose; 1163uint32_t aic7xxx_verbose;
1551 1164
1552int 1165int
1553ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) 1166ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
1554{ 1167{
1555 char buf[80]; 1168 char buf[80];
1556 struct Scsi_Host *host; 1169 struct Scsi_Host *host;
@@ -1564,11 +1177,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
1564 1177
1565 *((struct ahc_softc **)host->hostdata) = ahc; 1178 *((struct ahc_softc **)host->hostdata) = ahc;
1566 ahc_lock(ahc, &s); 1179 ahc_lock(ahc, &s);
1567#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1568 scsi_assign_lock(host, &ahc->platform_data->spin_lock); 1180 scsi_assign_lock(host, &ahc->platform_data->spin_lock);
1569#elif AHC_SCSI_HAS_HOST_LOCK != 0
1570 host->lock = &ahc->platform_data->spin_lock;
1571#endif
1572 ahc->platform_data->host = host; 1181 ahc->platform_data->host = host;
1573 host->can_queue = AHC_MAX_QUEUE; 1182 host->can_queue = AHC_MAX_QUEUE;
1574 host->cmd_per_lun = 2; 1183 host->cmd_per_lun = 2;
@@ -1587,19 +1196,14 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
1587 ahc_set_name(ahc, new_name); 1196 ahc_set_name(ahc, new_name);
1588 } 1197 }
1589 host->unique_id = ahc->unit; 1198 host->unique_id = ahc->unit;
1590#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1591 scsi_set_pci_device(host, ahc->dev_softc);
1592#endif
1593 ahc_linux_initialize_scsi_bus(ahc); 1199 ahc_linux_initialize_scsi_bus(ahc);
1594 ahc_intr_enable(ahc, TRUE); 1200 ahc_intr_enable(ahc, TRUE);
1595 ahc_unlock(ahc, &s); 1201 ahc_unlock(ahc, &s);
1596 1202
1597 host->transportt = ahc_linux_transport_template; 1203 host->transportt = ahc_linux_transport_template;
1598 1204
1599#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1600 scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */ 1205 scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */
1601 scsi_scan_host(host); 1206 scsi_scan_host(host);
1602#endif
1603 return (0); 1207 return (0);
1604} 1208}
1605 1209
@@ -1717,19 +1321,9 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1717 if (ahc->platform_data == NULL) 1321 if (ahc->platform_data == NULL)
1718 return (ENOMEM); 1322 return (ENOMEM);
1719 memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data)); 1323 memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
1720 TAILQ_INIT(&ahc->platform_data->completeq);
1721 TAILQ_INIT(&ahc->platform_data->device_runq);
1722 ahc->platform_data->irq = AHC_LINUX_NOIRQ; 1324 ahc->platform_data->irq = AHC_LINUX_NOIRQ;
1723 ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
1724 ahc_lockinit(ahc); 1325 ahc_lockinit(ahc);
1725 ahc_done_lockinit(ahc);
1726 init_timer(&ahc->platform_data->completeq_timer);
1727 ahc->platform_data->completeq_timer.data = (u_long)ahc;
1728 ahc->platform_data->completeq_timer.function =
1729 (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
1730 init_MUTEX_LOCKED(&ahc->platform_data->eh_sem); 1326 init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
1731 tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
1732 (unsigned long)ahc);
1733 ahc->seltime = (aic7xxx_seltime & 0x3) << 4; 1327 ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
1734 ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4; 1328 ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
1735 if (aic7xxx_pci_parity == 0) 1329 if (aic7xxx_pci_parity == 0)
@@ -1746,12 +1340,8 @@ ahc_platform_free(struct ahc_softc *ahc)
1746 int i, j; 1340 int i, j;
1747 1341
1748 if (ahc->platform_data != NULL) { 1342 if (ahc->platform_data != NULL) {
1749 del_timer_sync(&ahc->platform_data->completeq_timer);
1750 tasklet_kill(&ahc->platform_data->runq_tasklet);
1751 if (ahc->platform_data->host != NULL) { 1343 if (ahc->platform_data->host != NULL) {
1752#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1753 scsi_remove_host(ahc->platform_data->host); 1344 scsi_remove_host(ahc->platform_data->host);
1754#endif
1755 scsi_host_put(ahc->platform_data->host); 1345 scsi_host_put(ahc->platform_data->host);
1756 } 1346 }
1757 1347
@@ -1787,16 +1377,7 @@ ahc_platform_free(struct ahc_softc *ahc)
1787 release_mem_region(ahc->platform_data->mem_busaddr, 1377 release_mem_region(ahc->platform_data->mem_busaddr,
1788 0x1000); 1378 0x1000);
1789 } 1379 }
1790#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) 1380
1791 /*
1792 * In 2.4 we detach from the scsi midlayer before the PCI
1793 * layer invokes our remove callback. No per-instance
1794 * detach is provided, so we must reach inside the PCI
1795 * subsystem's internals and detach our driver manually.
1796 */
1797 if (ahc->dev_softc != NULL)
1798 ahc->dev_softc->driver = NULL;
1799#endif
1800 free(ahc->platform_data, M_DEVBUF); 1381 free(ahc->platform_data, M_DEVBUF);
1801 } 1382 }
1802} 1383}
@@ -1820,7 +1401,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1820 1401
1821 dev = ahc_linux_get_device(ahc, devinfo->channel - 'A', 1402 dev = ahc_linux_get_device(ahc, devinfo->channel - 'A',
1822 devinfo->target, 1403 devinfo->target,
1823 devinfo->lun, /*alloc*/FALSE); 1404 devinfo->lun);
1824 if (dev == NULL) 1405 if (dev == NULL)
1825 return; 1406 return;
1826 was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED); 1407 was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
@@ -1873,7 +1454,6 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1873 dev->maxtags = 0; 1454 dev->maxtags = 0;
1874 dev->openings = 1 - dev->active; 1455 dev->openings = 1 - dev->active;
1875 } 1456 }
1876#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1877 if (dev->scsi_device != NULL) { 1457 if (dev->scsi_device != NULL) {
1878 switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) { 1458 switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
1879 case AHC_DEV_Q_BASIC: 1459 case AHC_DEV_Q_BASIC:
@@ -1899,90 +1479,13 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1899 break; 1479 break;
1900 } 1480 }
1901 } 1481 }
1902#endif
1903} 1482}
1904 1483
1905int 1484int
1906ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel, 1485ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
1907 int lun, u_int tag, role_t role, uint32_t status) 1486 int lun, u_int tag, role_t role, uint32_t status)
1908{ 1487{
1909 int chan; 1488 return 0;
1910 int maxchan;
1911 int targ;
1912 int maxtarg;
1913 int clun;
1914 int maxlun;
1915 int count;
1916
1917 if (tag != SCB_LIST_NULL)
1918 return (0);
1919
1920 chan = 0;
1921 if (channel != ALL_CHANNELS) {
1922 chan = channel - 'A';
1923 maxchan = chan + 1;
1924 } else {
1925 maxchan = (ahc->features & AHC_TWIN) ? 2 : 1;
1926 }
1927 targ = 0;
1928 if (target != CAM_TARGET_WILDCARD) {
1929 targ = target;
1930 maxtarg = targ + 1;
1931 } else {
1932 maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
1933 }
1934 clun = 0;
1935 if (lun != CAM_LUN_WILDCARD) {
1936 clun = lun;
1937 maxlun = clun + 1;
1938 } else {
1939 maxlun = AHC_NUM_LUNS;
1940 }
1941
1942 count = 0;
1943 for (; chan < maxchan; chan++) {
1944
1945 for (; targ < maxtarg; targ++) {
1946
1947 for (; clun < maxlun; clun++) {
1948 struct ahc_linux_device *dev;
1949 struct ahc_busyq *busyq;
1950 struct ahc_cmd *acmd;
1951
1952 dev = ahc_linux_get_device(ahc, chan,
1953 targ, clun,
1954 /*alloc*/FALSE);
1955 if (dev == NULL)
1956 continue;
1957
1958 busyq = &dev->busyq;
1959 while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
1960 Scsi_Cmnd *cmd;
1961
1962 cmd = &acmd_scsi_cmd(acmd);
1963 TAILQ_REMOVE(busyq, acmd,
1964 acmd_links.tqe);
1965 count++;
1966 cmd->result = status << 16;
1967 ahc_linux_queue_cmd_complete(ahc, cmd);
1968 }
1969 }
1970 }
1971 }
1972
1973 return (count);
1974}
1975
1976static void
1977ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
1978{
1979 u_long flags;
1980
1981 ahc_lock(ahc, &flags);
1982 del_timer(&ahc->platform_data->completeq_timer);
1983 ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
1984 ahc_linux_run_complete_queue(ahc);
1985 ahc_unlock(ahc, &flags);
1986} 1489}
1987 1490
1988static u_int 1491static u_int
@@ -2045,213 +1548,200 @@ ahc_linux_device_queue_depth(struct ahc_softc *ahc,
2045 } 1548 }
2046} 1549}
2047 1550
2048static void 1551static int
2049ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev) 1552ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
1553 struct scsi_cmnd *cmd)
2050{ 1554{
2051 struct ahc_cmd *acmd;
2052 struct scsi_cmnd *cmd;
2053 struct scb *scb; 1555 struct scb *scb;
2054 struct hardware_scb *hscb; 1556 struct hardware_scb *hscb;
2055 struct ahc_initiator_tinfo *tinfo; 1557 struct ahc_initiator_tinfo *tinfo;
2056 struct ahc_tmode_tstate *tstate; 1558 struct ahc_tmode_tstate *tstate;
2057 uint16_t mask; 1559 uint16_t mask;
1560 struct scb_tailq *untagged_q = NULL;
2058 1561
2059 if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0) 1562 /*
2060 panic("running device on run list"); 1563 * Schedule us to run later. The only reason we are not
1564 * running is because the whole controller Q is frozen.
1565 */
1566 if (ahc->platform_data->qfrozen != 0)
1567 return SCSI_MLQUEUE_HOST_BUSY;
2061 1568
2062 while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL 1569 /*
2063 && dev->openings > 0 && dev->qfrozen == 0) { 1570 * We only allow one untagged transaction
1571 * per target in the initiator role unless
1572 * we are storing a full busy target *lun*
1573 * table in SCB space.
1574 */
1575 if (!blk_rq_tagged(cmd->request)
1576 && (ahc->features & AHC_SCB_BTT) == 0) {
1577 int target_offset;
2064 1578
2065 /* 1579 target_offset = cmd->device->id + cmd->device->channel * 8;
2066 * Schedule us to run later. The only reason we are not 1580 untagged_q = &(ahc->untagged_queues[target_offset]);
2067 * running is because the whole controller Q is frozen. 1581 if (!TAILQ_EMPTY(untagged_q))
2068 */ 1582 /* if we're already executing an untagged command
2069 if (ahc->platform_data->qfrozen != 0) { 1583 * we're busy to another */
2070 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, 1584 return SCSI_MLQUEUE_DEVICE_BUSY;
2071 dev, links); 1585 }
2072 dev->flags |= AHC_DEV_ON_RUN_LIST;
2073 return;
2074 }
2075 /*
2076 * Get an scb to use.
2077 */
2078 if ((scb = ahc_get_scb(ahc)) == NULL) {
2079 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
2080 dev, links);
2081 dev->flags |= AHC_DEV_ON_RUN_LIST;
2082 ahc->flags |= AHC_RESOURCE_SHORTAGE;
2083 return;
2084 }
2085 TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
2086 cmd = &acmd_scsi_cmd(acmd);
2087 scb->io_ctx = cmd;
2088 scb->platform_data->dev = dev;
2089 hscb = scb->hscb;
2090 cmd->host_scribble = (char *)scb;
2091 1586
2092 /* 1587 /*
2093 * Fill out basics of the HSCB. 1588 * Get an scb to use.
2094 */ 1589 */
2095 hscb->control = 0; 1590 if ((scb = ahc_get_scb(ahc)) == NULL) {
2096 hscb->scsiid = BUILD_SCSIID(ahc, cmd); 1591 ahc->flags |= AHC_RESOURCE_SHORTAGE;
2097 hscb->lun = cmd->device->lun; 1592 return SCSI_MLQUEUE_HOST_BUSY;
2098 mask = SCB_GET_TARGET_MASK(ahc, scb); 1593 }
2099 tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
2100 SCB_GET_OUR_ID(scb),
2101 SCB_GET_TARGET(ahc, scb), &tstate);
2102 hscb->scsirate = tinfo->scsirate;
2103 hscb->scsioffset = tinfo->curr.offset;
2104 if ((tstate->ultraenb & mask) != 0)
2105 hscb->control |= ULTRAENB;
2106
2107 if ((ahc->user_discenable & mask) != 0)
2108 hscb->control |= DISCENB;
2109
2110 if ((tstate->auto_negotiate & mask) != 0) {
2111 scb->flags |= SCB_AUTO_NEGOTIATE;
2112 scb->hscb->control |= MK_MESSAGE;
2113 }
2114 1594
2115 if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) { 1595 scb->io_ctx = cmd;
2116#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) 1596 scb->platform_data->dev = dev;
2117 int msg_bytes; 1597 hscb = scb->hscb;
2118 uint8_t tag_msgs[2]; 1598 cmd->host_scribble = (char *)scb;
2119 1599
2120 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); 1600 /*
2121 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { 1601 * Fill out basics of the HSCB.
2122 hscb->control |= tag_msgs[0]; 1602 */
2123 if (tag_msgs[0] == MSG_ORDERED_TASK) 1603 hscb->control = 0;
2124 dev->commands_since_idle_or_otag = 0; 1604 hscb->scsiid = BUILD_SCSIID(ahc, cmd);
2125 } else 1605 hscb->lun = cmd->device->lun;
2126#endif 1606 mask = SCB_GET_TARGET_MASK(ahc, scb);
2127 if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH 1607 tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
2128 && (dev->flags & AHC_DEV_Q_TAGGED) != 0) { 1608 SCB_GET_OUR_ID(scb),
2129 hscb->control |= MSG_ORDERED_TASK; 1609 SCB_GET_TARGET(ahc, scb), &tstate);
1610 hscb->scsirate = tinfo->scsirate;
1611 hscb->scsioffset = tinfo->curr.offset;
1612 if ((tstate->ultraenb & mask) != 0)
1613 hscb->control |= ULTRAENB;
1614
1615 if ((ahc->user_discenable & mask) != 0)
1616 hscb->control |= DISCENB;
1617
1618 if ((tstate->auto_negotiate & mask) != 0) {
1619 scb->flags |= SCB_AUTO_NEGOTIATE;
1620 scb->hscb->control |= MK_MESSAGE;
1621 }
1622
1623 if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
1624 int msg_bytes;
1625 uint8_t tag_msgs[2];
1626
1627 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1628 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1629 hscb->control |= tag_msgs[0];
1630 if (tag_msgs[0] == MSG_ORDERED_TASK)
2130 dev->commands_since_idle_or_otag = 0; 1631 dev->commands_since_idle_or_otag = 0;
2131 } else { 1632 } else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
2132 hscb->control |= MSG_SIMPLE_TASK; 1633 && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
2133 } 1634 hscb->control |= MSG_ORDERED_TASK;
2134 } 1635 dev->commands_since_idle_or_otag = 0;
2135
2136 hscb->cdb_len = cmd->cmd_len;
2137 if (hscb->cdb_len <= 12) {
2138 memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
2139 } else { 1636 } else {
2140 memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len); 1637 hscb->control |= MSG_SIMPLE_TASK;
2141 scb->flags |= SCB_CDB32_PTR;
2142 } 1638 }
1639 }
2143 1640
2144 scb->platform_data->xfer_len = 0; 1641 hscb->cdb_len = cmd->cmd_len;
2145 ahc_set_residual(scb, 0); 1642 if (hscb->cdb_len <= 12) {
2146 ahc_set_sense_residual(scb, 0); 1643 memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
2147 scb->sg_count = 0; 1644 } else {
2148 if (cmd->use_sg != 0) { 1645 memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
2149 struct ahc_dma_seg *sg; 1646 scb->flags |= SCB_CDB32_PTR;
2150 struct scatterlist *cur_seg; 1647 }
2151 struct scatterlist *end_seg;
2152 int nseg;
2153
2154 cur_seg = (struct scatterlist *)cmd->request_buffer;
2155 nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
2156 cmd->sc_data_direction);
2157 end_seg = cur_seg + nseg;
2158 /* Copy the segments into the SG list. */
2159 sg = scb->sg_list;
2160 /*
2161 * The sg_count may be larger than nseg if
2162 * a transfer crosses a 32bit page.
2163 */
2164 while (cur_seg < end_seg) {
2165 dma_addr_t addr;
2166 bus_size_t len;
2167 int consumed;
2168
2169 addr = sg_dma_address(cur_seg);
2170 len = sg_dma_len(cur_seg);
2171 consumed = ahc_linux_map_seg(ahc, scb,
2172 sg, addr, len);
2173 sg += consumed;
2174 scb->sg_count += consumed;
2175 cur_seg++;
2176 }
2177 sg--;
2178 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2179
2180 /*
2181 * Reset the sg list pointer.
2182 */
2183 scb->hscb->sgptr =
2184 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2185 1648
2186 /* 1649 scb->platform_data->xfer_len = 0;
2187 * Copy the first SG into the "current" 1650 ahc_set_residual(scb, 0);
2188 * data pointer area. 1651 ahc_set_sense_residual(scb, 0);
2189 */ 1652 scb->sg_count = 0;
2190 scb->hscb->dataptr = scb->sg_list->addr; 1653 if (cmd->use_sg != 0) {
2191 scb->hscb->datacnt = scb->sg_list->len; 1654 struct ahc_dma_seg *sg;
2192 } else if (cmd->request_bufflen != 0) { 1655 struct scatterlist *cur_seg;
2193 struct ahc_dma_seg *sg; 1656 struct scatterlist *end_seg;
1657 int nseg;
1658
1659 cur_seg = (struct scatterlist *)cmd->request_buffer;
1660 nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
1661 cmd->sc_data_direction);
1662 end_seg = cur_seg + nseg;
1663 /* Copy the segments into the SG list. */
1664 sg = scb->sg_list;
1665 /*
1666 * The sg_count may be larger than nseg if
1667 * a transfer crosses a 32bit page.
1668 */
1669 while (cur_seg < end_seg) {
2194 dma_addr_t addr; 1670 dma_addr_t addr;
2195 1671 bus_size_t len;
2196 sg = scb->sg_list; 1672 int consumed;
2197 addr = pci_map_single(ahc->dev_softc, 1673
2198 cmd->request_buffer, 1674 addr = sg_dma_address(cur_seg);
2199 cmd->request_bufflen, 1675 len = sg_dma_len(cur_seg);
2200 cmd->sc_data_direction); 1676 consumed = ahc_linux_map_seg(ahc, scb,
2201 scb->platform_data->buf_busaddr = addr; 1677 sg, addr, len);
2202 scb->sg_count = ahc_linux_map_seg(ahc, scb, 1678 sg += consumed;
2203 sg, addr, 1679 scb->sg_count += consumed;
2204 cmd->request_bufflen); 1680 cur_seg++;
2205 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2206
2207 /*
2208 * Reset the sg list pointer.
2209 */
2210 scb->hscb->sgptr =
2211 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2212
2213 /*
2214 * Copy the first SG into the "current"
2215 * data pointer area.
2216 */
2217 scb->hscb->dataptr = sg->addr;
2218 scb->hscb->datacnt = sg->len;
2219 } else {
2220 scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
2221 scb->hscb->dataptr = 0;
2222 scb->hscb->datacnt = 0;
2223 scb->sg_count = 0;
2224 } 1681 }
1682 sg--;
1683 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2225 1684
2226 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE); 1685 /*
2227 LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); 1686 * Reset the sg list pointer.
2228 dev->openings--; 1687 */
2229 dev->active++; 1688 scb->hscb->sgptr =
2230 dev->commands_issued++; 1689 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2231 if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0) 1690
2232 dev->commands_since_idle_or_otag++; 1691 /*
1692 * Copy the first SG into the "current"
1693 * data pointer area.
1694 */
1695 scb->hscb->dataptr = scb->sg_list->addr;
1696 scb->hscb->datacnt = scb->sg_list->len;
1697 } else if (cmd->request_bufflen != 0) {
1698 struct ahc_dma_seg *sg;
1699 dma_addr_t addr;
1700
1701 sg = scb->sg_list;
1702 addr = pci_map_single(ahc->dev_softc,
1703 cmd->request_buffer,
1704 cmd->request_bufflen,
1705 cmd->sc_data_direction);
1706 scb->platform_data->buf_busaddr = addr;
1707 scb->sg_count = ahc_linux_map_seg(ahc, scb,
1708 sg, addr,
1709 cmd->request_bufflen);
1710 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2233 1711
2234 /* 1712 /*
2235 * We only allow one untagged transaction 1713 * Reset the sg list pointer.
2236 * per target in the initiator role unless
2237 * we are storing a full busy target *lun*
2238 * table in SCB space.
2239 */ 1714 */
2240 if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 1715 scb->hscb->sgptr =
2241 && (ahc->features & AHC_SCB_BTT) == 0) { 1716 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2242 struct scb_tailq *untagged_q; 1717
2243 int target_offset; 1718 /*
2244 1719 * Copy the first SG into the "current"
2245 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); 1720 * data pointer area.
2246 untagged_q = &(ahc->untagged_queues[target_offset]); 1721 */
2247 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); 1722 scb->hscb->dataptr = sg->addr;
2248 scb->flags |= SCB_UNTAGGEDQ; 1723 scb->hscb->datacnt = sg->len;
2249 if (TAILQ_FIRST(untagged_q) != scb) 1724 } else {
2250 continue; 1725 scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
2251 } 1726 scb->hscb->dataptr = 0;
2252 scb->flags |= SCB_ACTIVE; 1727 scb->hscb->datacnt = 0;
2253 ahc_queue_scb(ahc, scb); 1728 scb->sg_count = 0;
2254 } 1729 }
1730
1731 LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1732 dev->openings--;
1733 dev->active++;
1734 dev->commands_issued++;
1735 if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
1736 dev->commands_since_idle_or_otag++;
1737
1738 scb->flags |= SCB_ACTIVE;
1739 if (untagged_q) {
1740 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1741 scb->flags |= SCB_UNTAGGEDQ;
1742 }
1743 ahc_queue_scb(ahc, scb);
1744 return 0;
2255} 1745}
2256 1746
2257/* 1747/*
@@ -2267,9 +1757,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
2267 ahc = (struct ahc_softc *) dev_id; 1757 ahc = (struct ahc_softc *) dev_id;
2268 ahc_lock(ahc, &flags); 1758 ahc_lock(ahc, &flags);
2269 ours = ahc_intr(ahc); 1759 ours = ahc_intr(ahc);
2270 if (ahc_linux_next_device_to_run(ahc) != NULL)
2271 ahc_schedule_runq(ahc);
2272 ahc_linux_run_complete_queue(ahc);
2273 ahc_unlock(ahc, &flags); 1760 ahc_unlock(ahc, &flags);
2274 return IRQ_RETVAL(ours); 1761 return IRQ_RETVAL(ours);
2275} 1762}
@@ -2278,8 +1765,6 @@ void
2278ahc_platform_flushwork(struct ahc_softc *ahc) 1765ahc_platform_flushwork(struct ahc_softc *ahc)
2279{ 1766{
2280 1767
2281 while (ahc_linux_run_complete_queue(ahc) != NULL)
2282 ;
2283} 1768}
2284 1769
2285static struct ahc_linux_target* 1770static struct ahc_linux_target*
@@ -2348,9 +1833,6 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
2348 if (dev == NULL) 1833 if (dev == NULL)
2349 return (NULL); 1834 return (NULL);
2350 memset(dev, 0, sizeof(*dev)); 1835 memset(dev, 0, sizeof(*dev));
2351 init_timer(&dev->timer);
2352 TAILQ_INIT(&dev->busyq);
2353 dev->flags = AHC_DEV_UNCONFIGURED;
2354 dev->lun = lun; 1836 dev->lun = lun;
2355 dev->target = targ; 1837 dev->target = targ;
2356 1838
@@ -2373,7 +1855,7 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
2373} 1855}
2374 1856
2375static void 1857static void
2376__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev) 1858ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2377{ 1859{
2378 struct ahc_linux_target *targ; 1860 struct ahc_linux_target *targ;
2379 1861
@@ -2385,13 +1867,6 @@ __ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2385 ahc_linux_free_target(ahc, targ); 1867 ahc_linux_free_target(ahc, targ);
2386} 1868}
2387 1869
2388static void
2389ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2390{
2391 del_timer_sync(&dev->timer);
2392 __ahc_linux_free_device(ahc, dev);
2393}
2394
2395void 1870void
2396ahc_send_async(struct ahc_softc *ahc, char channel, 1871ahc_send_async(struct ahc_softc *ahc, char channel,
2397 u_int target, u_int lun, ac_code code, void *arg) 1872 u_int target, u_int lun, ac_code code, void *arg)
@@ -2463,28 +1938,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
2463 } 1938 }
2464 case AC_SENT_BDR: 1939 case AC_SENT_BDR:
2465 { 1940 {
2466#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
2467 WARN_ON(lun != CAM_LUN_WILDCARD); 1941 WARN_ON(lun != CAM_LUN_WILDCARD);
2468 scsi_report_device_reset(ahc->platform_data->host, 1942 scsi_report_device_reset(ahc->platform_data->host,
2469 channel - 'A', target); 1943 channel - 'A', target);
2470#else
2471 Scsi_Device *scsi_dev;
2472
2473 /*
2474 * Find the SCSI device associated with this
2475 * request and indicate that a UA is expected.
2476 */
2477 for (scsi_dev = ahc->platform_data->host->host_queue;
2478 scsi_dev != NULL; scsi_dev = scsi_dev->next) {
2479 if (channel - 'A' == scsi_dev->channel
2480 && target == scsi_dev->id
2481 && (lun == CAM_LUN_WILDCARD
2482 || lun == scsi_dev->lun)) {
2483 scsi_dev->was_reset = 1;
2484 scsi_dev->expecting_cc_ua = 1;
2485 }
2486 }
2487#endif
2488 break; 1944 break;
2489 } 1945 }
2490 case AC_BUS_RESET: 1946 case AC_BUS_RESET:
@@ -2504,7 +1960,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
2504void 1960void
2505ahc_done(struct ahc_softc *ahc, struct scb *scb) 1961ahc_done(struct ahc_softc *ahc, struct scb *scb)
2506{ 1962{
2507 Scsi_Cmnd *cmd; 1963 struct scsi_cmnd *cmd;
2508 struct ahc_linux_device *dev; 1964 struct ahc_linux_device *dev;
2509 1965
2510 LIST_REMOVE(scb, pending_links); 1966 LIST_REMOVE(scb, pending_links);
@@ -2515,7 +1971,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2515 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); 1971 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
2516 untagged_q = &(ahc->untagged_queues[target_offset]); 1972 untagged_q = &(ahc->untagged_queues[target_offset]);
2517 TAILQ_REMOVE(untagged_q, scb, links.tqe); 1973 TAILQ_REMOVE(untagged_q, scb, links.tqe);
2518 ahc_run_untagged_queue(ahc, untagged_q); 1974 BUG_ON(!TAILQ_EMPTY(untagged_q));
2519 } 1975 }
2520 1976
2521 if ((scb->flags & SCB_ACTIVE) == 0) { 1977 if ((scb->flags & SCB_ACTIVE) == 0) {
@@ -2583,8 +2039,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2583 } 2039 }
2584 } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { 2040 } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
2585 ahc_linux_handle_scsi_status(ahc, dev, scb); 2041 ahc_linux_handle_scsi_status(ahc, dev, scb);
2586 } else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
2587 dev->flags |= AHC_DEV_UNCONFIGURED;
2588 } 2042 }
2589 2043
2590 if (dev->openings == 1 2044 if (dev->openings == 1
@@ -2606,16 +2060,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2606 if (dev->active == 0) 2060 if (dev->active == 0)
2607 dev->commands_since_idle_or_otag = 0; 2061 dev->commands_since_idle_or_otag = 0;
2608 2062
2609 if (TAILQ_EMPTY(&dev->busyq)) {
2610 if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0
2611 && dev->active == 0
2612 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
2613 ahc_linux_free_device(ahc, dev);
2614 } else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
2615 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
2616 dev->flags |= AHC_DEV_ON_RUN_LIST;
2617 }
2618
2619 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 2063 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
2620 printf("Recovery SCB completes\n"); 2064 printf("Recovery SCB completes\n");
2621 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT 2065 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
@@ -2659,7 +2103,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
2659 case SCSI_STATUS_CHECK_COND: 2103 case SCSI_STATUS_CHECK_COND:
2660 case SCSI_STATUS_CMD_TERMINATED: 2104 case SCSI_STATUS_CMD_TERMINATED:
2661 { 2105 {
2662 Scsi_Cmnd *cmd; 2106 struct scsi_cmnd *cmd;
2663 2107
2664 /* 2108 /*
2665 * Copy sense information to the OS's cmd 2109 * Copy sense information to the OS's cmd
@@ -2754,52 +2198,15 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
2754 ahc_platform_set_tags(ahc, &devinfo, 2198 ahc_platform_set_tags(ahc, &devinfo,
2755 (dev->flags & AHC_DEV_Q_BASIC) 2199 (dev->flags & AHC_DEV_Q_BASIC)
2756 ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED); 2200 ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
2757 /* FALLTHROUGH */
2758 }
2759 case SCSI_STATUS_BUSY:
2760 {
2761 /*
2762 * Set a short timer to defer sending commands for
2763 * a bit since Linux will not delay in this case.
2764 */
2765 if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) {
2766 printf("%s:%c:%d: Device Timer still active during "
2767 "busy processing\n", ahc_name(ahc),
2768 dev->target->channel, dev->target->target);
2769 break;
2770 }
2771 dev->flags |= AHC_DEV_TIMER_ACTIVE;
2772 dev->qfrozen++;
2773 init_timer(&dev->timer);
2774 dev->timer.data = (u_long)dev;
2775 dev->timer.expires = jiffies + (HZ/2);
2776 dev->timer.function = ahc_linux_dev_timed_unfreeze;
2777 add_timer(&dev->timer);
2778 break; 2201 break;
2779 } 2202 }
2780 } 2203 }
2781} 2204}
2782 2205
2783static void 2206static void
2784ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd) 2207ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
2785{ 2208{
2786 /* 2209 /*
2787 * Typically, the complete queue has very few entries
2788 * queued to it before the queue is emptied by
2789 * ahc_linux_run_complete_queue, so sorting the entries
2790 * by generation number should be inexpensive.
2791 * We perform the sort so that commands that complete
2792 * with an error are retuned in the order origionally
2793 * queued to the controller so that any subsequent retries
2794 * are performed in order. The underlying ahc routines do
2795 * not guarantee the order that aborted commands will be
2796 * returned to us.
2797 */
2798 struct ahc_completeq *completeq;
2799 struct ahc_cmd *list_cmd;
2800 struct ahc_cmd *acmd;
2801
2802 /*
2803 * Map CAM error codes into Linux Error codes. We 2210 * Map CAM error codes into Linux Error codes. We
2804 * avoid the conversion so that the DV code has the 2211 * avoid the conversion so that the DV code has the
2805 * full error information available when making 2212 * full error information available when making
@@ -2852,26 +2259,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
2852 new_status = DID_ERROR; 2259 new_status = DID_ERROR;
2853 break; 2260 break;
2854 case CAM_REQUEUE_REQ: 2261 case CAM_REQUEUE_REQ:
2855 /* 2262 new_status = DID_REQUEUE;
2856 * If we want the request requeued, make sure there
2857 * are sufficent retries. In the old scsi error code,
2858 * we used to be able to specify a result code that
2859 * bypassed the retry count. Now we must use this
2860 * hack. We also "fake" a check condition with
2861 * a sense code of ABORTED COMMAND. This seems to
2862 * evoke a retry even if this command is being sent
2863 * via the eh thread. Ick! Ick! Ick!
2864 */
2865 if (cmd->retries > 0)
2866 cmd->retries--;
2867 new_status = DID_OK;
2868 ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
2869 cmd->result |= (DRIVER_SENSE << 24);
2870 memset(cmd->sense_buffer, 0,
2871 sizeof(cmd->sense_buffer));
2872 cmd->sense_buffer[0] = SSD_ERRCODE_VALID
2873 | SSD_CURRENT_ERROR;
2874 cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
2875 break; 2263 break;
2876 default: 2264 default:
2877 /* We should never get here */ 2265 /* We should never get here */
@@ -2882,17 +2270,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
2882 ahc_cmd_set_transaction_status(cmd, new_status); 2270 ahc_cmd_set_transaction_status(cmd, new_status);
2883 } 2271 }
2884 2272
2885 completeq = &ahc->platform_data->completeq; 2273 cmd->scsi_done(cmd);
2886 list_cmd = TAILQ_FIRST(completeq);
2887 acmd = (struct ahc_cmd *)cmd;
2888 while (list_cmd != NULL
2889 && acmd_scsi_cmd(list_cmd).serial_number
2890 < acmd_scsi_cmd(acmd).serial_number)
2891 list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
2892 if (list_cmd != NULL)
2893 TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
2894 else
2895 TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
2896} 2274}
2897 2275
2898static void 2276static void
@@ -2940,7 +2318,6 @@ ahc_linux_release_simq(u_long arg)
2940 ahc->platform_data->qfrozen--; 2318 ahc->platform_data->qfrozen--;
2941 if (ahc->platform_data->qfrozen == 0) 2319 if (ahc->platform_data->qfrozen == 0)
2942 unblock_reqs = 1; 2320 unblock_reqs = 1;
2943 ahc_schedule_runq(ahc);
2944 ahc_unlock(ahc, &s); 2321 ahc_unlock(ahc, &s);
2945 /* 2322 /*
2946 * There is still a race here. The mid-layer 2323 * There is still a race here. The mid-layer
@@ -2952,37 +2329,12 @@ ahc_linux_release_simq(u_long arg)
2952 scsi_unblock_requests(ahc->platform_data->host); 2329 scsi_unblock_requests(ahc->platform_data->host);
2953} 2330}
2954 2331
2955static void
2956ahc_linux_dev_timed_unfreeze(u_long arg)
2957{
2958 struct ahc_linux_device *dev;
2959 struct ahc_softc *ahc;
2960 u_long s;
2961
2962 dev = (struct ahc_linux_device *)arg;
2963 ahc = dev->target->ahc;
2964 ahc_lock(ahc, &s);
2965 dev->flags &= ~AHC_DEV_TIMER_ACTIVE;
2966 if (dev->qfrozen > 0)
2967 dev->qfrozen--;
2968 if (dev->qfrozen == 0
2969 && (dev->flags & AHC_DEV_ON_RUN_LIST) == 0)
2970 ahc_linux_run_device_queue(ahc, dev);
2971 if (TAILQ_EMPTY(&dev->busyq)
2972 && dev->active == 0)
2973 __ahc_linux_free_device(ahc, dev);
2974 ahc_unlock(ahc, &s);
2975}
2976
2977static int 2332static int
2978ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) 2333ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
2979{ 2334{
2980 struct ahc_softc *ahc; 2335 struct ahc_softc *ahc;
2981 struct ahc_cmd *acmd;
2982 struct ahc_cmd *list_acmd;
2983 struct ahc_linux_device *dev; 2336 struct ahc_linux_device *dev;
2984 struct scb *pending_scb; 2337 struct scb *pending_scb;
2985 u_long s;
2986 u_int saved_scbptr; 2338 u_int saved_scbptr;
2987 u_int active_scb_index; 2339 u_int active_scb_index;
2988 u_int last_phase; 2340 u_int last_phase;
@@ -2998,7 +2350,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
2998 paused = FALSE; 2350 paused = FALSE;
2999 wait = FALSE; 2351 wait = FALSE;
3000 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 2352 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
3001 acmd = (struct ahc_cmd *)cmd;
3002 2353
3003 printf("%s:%d:%d:%d: Attempting to queue a%s message\n", 2354 printf("%s:%d:%d:%d: Attempting to queue a%s message\n",
3004 ahc_name(ahc), cmd->device->channel, 2355 ahc_name(ahc), cmd->device->channel,
@@ -3011,22 +2362,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3011 printf("\n"); 2362 printf("\n");
3012 2363
3013 /* 2364 /*
3014 * In all versions of Linux, we have to work around
3015 * a major flaw in how the mid-layer is locked down
3016 * if we are to sleep successfully in our error handler
3017 * while allowing our interrupt handler to run. Since
3018 * the midlayer acquires either the io_request_lock or
3019 * our lock prior to calling us, we must use the
3020 * spin_unlock_irq() method for unlocking our lock.
3021 * This will force interrupts to be enabled on the
3022 * current CPU. Since the EH thread should not have
3023 * been running with CPU interrupts disabled other than
3024 * by acquiring either the io_request_lock or our own
3025 * lock, this *should* be safe.
3026 */
3027 ahc_midlayer_entrypoint_lock(ahc, &s);
3028
3029 /*
3030 * First determine if we currently own this command. 2365 * First determine if we currently own this command.
3031 * Start by searching the device queue. If not found 2366 * Start by searching the device queue. If not found
3032 * there, check the pending_scb list. If not found 2367 * there, check the pending_scb list. If not found
@@ -3034,7 +2369,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3034 * command, return success. 2369 * command, return success.
3035 */ 2370 */
3036 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, 2371 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
3037 cmd->device->lun, /*alloc*/FALSE); 2372 cmd->device->lun);
3038 2373
3039 if (dev == NULL) { 2374 if (dev == NULL) {
3040 /* 2375 /*
@@ -3048,24 +2383,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3048 goto no_cmd; 2383 goto no_cmd;
3049 } 2384 }
3050 2385
3051 TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
3052 if (list_acmd == acmd)
3053 break;
3054 }
3055
3056 if (list_acmd != NULL) {
3057 printf("%s:%d:%d:%d: Command found on device queue\n",
3058 ahc_name(ahc), cmd->device->channel, cmd->device->id,
3059 cmd->device->lun);
3060 if (flag == SCB_ABORT) {
3061 TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
3062 cmd->result = DID_ABORT << 16;
3063 ahc_linux_queue_cmd_complete(ahc, cmd);
3064 retval = SUCCESS;
3065 goto done;
3066 }
3067 }
3068
3069 if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0 2386 if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
3070 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id, 2387 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
3071 cmd->device->channel + 'A', 2388 cmd->device->channel + 'A',
@@ -3299,53 +2616,42 @@ done:
3299 } 2616 }
3300 spin_lock_irq(&ahc->platform_data->spin_lock); 2617 spin_lock_irq(&ahc->platform_data->spin_lock);
3301 } 2618 }
3302 ahc_schedule_runq(ahc);
3303 ahc_linux_run_complete_queue(ahc);
3304 ahc_midlayer_entrypoint_unlock(ahc, &s);
3305 return (retval); 2619 return (retval);
3306} 2620}
3307 2621
3308void 2622void
3309ahc_platform_dump_card_state(struct ahc_softc *ahc) 2623ahc_platform_dump_card_state(struct ahc_softc *ahc)
3310{ 2624{
3311 struct ahc_linux_device *dev; 2625}
3312 int channel;
3313 int maxchannel;
3314 int target;
3315 int maxtarget;
3316 int lun;
3317 int i;
3318
3319 maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0;
3320 maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7;
3321 for (channel = 0; channel <= maxchannel; channel++) {
3322 2626
3323 for (target = 0; target <=maxtarget; target++) { 2627static void ahc_linux_exit(void);
3324 2628
3325 for (lun = 0; lun < AHC_NUM_LUNS; lun++) { 2629static void ahc_linux_get_width(struct scsi_target *starget)
3326 struct ahc_cmd *acmd; 2630{
2631 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2632 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
2633 struct ahc_tmode_tstate *tstate;
2634 struct ahc_initiator_tinfo *tinfo
2635 = ahc_fetch_transinfo(ahc,
2636 starget->channel + 'A',
2637 shost->this_id, starget->id, &tstate);
2638 spi_width(starget) = tinfo->curr.width;
2639}
3327 2640
3328 dev = ahc_linux_get_device(ahc, channel, target, 2641static void ahc_linux_set_width(struct scsi_target *starget, int width)
3329 lun, /*alloc*/FALSE); 2642{
3330 if (dev == NULL) 2643 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3331 continue; 2644 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
2645 struct ahc_devinfo devinfo;
2646 unsigned long flags;
3332 2647
3333 printf("DevQ(%d:%d:%d): ", 2648 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3334 channel, target, lun); 2649 starget->channel + 'A', ROLE_INITIATOR);
3335 i = 0; 2650 ahc_lock(ahc, &flags);
3336 TAILQ_FOREACH(acmd, &dev->busyq, 2651 ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
3337 acmd_links.tqe) { 2652 ahc_unlock(ahc, &flags);
3338 if (i++ > AHC_SCB_MAX)
3339 break;
3340 }
3341 printf("%d waiting\n", i);
3342 }
3343 }
3344 }
3345} 2653}
3346 2654
3347static void ahc_linux_exit(void);
3348
3349static void ahc_linux_get_period(struct scsi_target *starget) 2655static void ahc_linux_get_period(struct scsi_target *starget)
3350{ 2656{
3351 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2657 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3376,8 +2682,21 @@ static void ahc_linux_set_period(struct scsi_target *starget, int period)
3376 if (offset == 0) 2682 if (offset == 0)
3377 offset = MAX_OFFSET; 2683 offset = MAX_OFFSET;
3378 2684
2685 if (period < 9)
2686 period = 9; /* 12.5ns is our minimum */
2687 if (period == 9)
2688 ppr_options |= MSG_EXT_PPR_DT_REQ;
2689
3379 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2690 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3380 starget->channel + 'A', ROLE_INITIATOR); 2691 starget->channel + 'A', ROLE_INITIATOR);
2692
2693 /* all PPR requests apart from QAS require wide transfers */
2694 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2695 ahc_linux_get_width(starget);
2696 if (spi_width(starget) == 0)
2697 ppr_options &= MSG_EXT_PPR_QAS_REQ;
2698 }
2699
3381 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); 2700 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3382 ahc_lock(ahc, &flags); 2701 ahc_lock(ahc, &flags);
3383 ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, 2702 ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
@@ -3425,32 +2744,6 @@ static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
3425 ahc_unlock(ahc, &flags); 2744 ahc_unlock(ahc, &flags);
3426} 2745}
3427 2746
3428static void ahc_linux_get_width(struct scsi_target *starget)
3429{
3430 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3431 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
3432 struct ahc_tmode_tstate *tstate;
3433 struct ahc_initiator_tinfo *tinfo
3434 = ahc_fetch_transinfo(ahc,
3435 starget->channel + 'A',
3436 shost->this_id, starget->id, &tstate);
3437 spi_width(starget) = tinfo->curr.width;
3438}
3439
3440static void ahc_linux_set_width(struct scsi_target *starget, int width)
3441{
3442 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3443 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
3444 struct ahc_devinfo devinfo;
3445 unsigned long flags;
3446
3447 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3448 starget->channel + 'A', ROLE_INITIATOR);
3449 ahc_lock(ahc, &flags);
3450 ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
3451 ahc_unlock(ahc, &flags);
3452}
3453
3454static void ahc_linux_get_dt(struct scsi_target *starget) 2747static void ahc_linux_get_dt(struct scsi_target *starget)
3455{ 2748{
3456 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2749 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3479,10 +2772,15 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
3479 unsigned long flags; 2772 unsigned long flags;
3480 struct ahc_syncrate *syncrate; 2773 struct ahc_syncrate *syncrate;
3481 2774
2775 if (dt) {
2776 period = 9; /* 12.5ns is the only period valid for DT */
2777 ppr_options |= MSG_EXT_PPR_DT_REQ;
2778 } else if (period == 9)
2779 period = 10; /* if resetting DT, period must be >= 25ns */
2780
3482 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2781 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3483 starget->channel + 'A', ROLE_INITIATOR); 2782 starget->channel + 'A', ROLE_INITIATOR);
3484 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2783 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
3485 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3486 ahc_lock(ahc, &flags); 2784 ahc_lock(ahc, &flags);
3487 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2785 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3488 ppr_options, AHC_TRANS_GOAL, FALSE); 2786 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3514,7 +2812,6 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
3514 unsigned int ppr_options = tinfo->curr.ppr_options 2812 unsigned int ppr_options = tinfo->curr.ppr_options
3515 & ~MSG_EXT_PPR_QAS_REQ; 2813 & ~MSG_EXT_PPR_QAS_REQ;
3516 unsigned int period = tinfo->curr.period; 2814 unsigned int period = tinfo->curr.period;
3517 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
3518 unsigned long flags; 2815 unsigned long flags;
3519 struct ahc_syncrate *syncrate; 2816 struct ahc_syncrate *syncrate;
3520 2817
@@ -3523,8 +2820,7 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
3523 2820
3524 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2821 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3525 starget->channel + 'A', ROLE_INITIATOR); 2822 starget->channel + 'A', ROLE_INITIATOR);
3526 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2823 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3527 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3528 ahc_lock(ahc, &flags); 2824 ahc_lock(ahc, &flags);
3529 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2825 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3530 ppr_options, AHC_TRANS_GOAL, FALSE); 2826 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3556,7 +2852,6 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
3556 unsigned int ppr_options = tinfo->curr.ppr_options 2852 unsigned int ppr_options = tinfo->curr.ppr_options
3557 & ~MSG_EXT_PPR_IU_REQ; 2853 & ~MSG_EXT_PPR_IU_REQ;
3558 unsigned int period = tinfo->curr.period; 2854 unsigned int period = tinfo->curr.period;
3559 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
3560 unsigned long flags; 2855 unsigned long flags;
3561 struct ahc_syncrate *syncrate; 2856 struct ahc_syncrate *syncrate;
3562 2857
@@ -3565,8 +2860,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
3565 2860
3566 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2861 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3567 starget->channel + 'A', ROLE_INITIATOR); 2862 starget->channel + 'A', ROLE_INITIATOR);
3568 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2863 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3569 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3570 ahc_lock(ahc, &flags); 2864 ahc_lock(ahc, &flags);
3571 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2865 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3572 ppr_options, AHC_TRANS_GOAL, FALSE); 2866 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3599,7 +2893,6 @@ static struct spi_function_template ahc_linux_transport_functions = {
3599static int __init 2893static int __init
3600ahc_linux_init(void) 2894ahc_linux_init(void)
3601{ 2895{
3602#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
3603 ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions); 2896 ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions);
3604 if (!ahc_linux_transport_template) 2897 if (!ahc_linux_transport_template)
3605 return -ENODEV; 2898 return -ENODEV;
@@ -3608,29 +2901,11 @@ ahc_linux_init(void)
3608 spi_release_transport(ahc_linux_transport_template); 2901 spi_release_transport(ahc_linux_transport_template);
3609 ahc_linux_exit(); 2902 ahc_linux_exit();
3610 return -ENODEV; 2903 return -ENODEV;
3611#else
3612 scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
3613 if (aic7xxx_driver_template.present == 0) {
3614 scsi_unregister_module(MODULE_SCSI_HA,
3615 &aic7xxx_driver_template);
3616 return (-ENODEV);
3617 }
3618
3619 return (0);
3620#endif
3621} 2904}
3622 2905
3623static void 2906static void
3624ahc_linux_exit(void) 2907ahc_linux_exit(void)
3625{ 2908{
3626#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
3627 /*
3628 * In 2.4 we have to unregister from the PCI core _after_
3629 * unregistering from the scsi midlayer to avoid dangling
3630 * references.
3631 */
3632 scsi_unregister_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
3633#endif
3634 ahc_linux_pci_exit(); 2909 ahc_linux_pci_exit();
3635 ahc_linux_eisa_exit(); 2910 ahc_linux_eisa_exit();
3636 spi_release_transport(ahc_linux_transport_template); 2911 spi_release_transport(ahc_linux_transport_template);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.h b/drivers/scsi/aic7xxx/aic7xxx_osm.h
index ed9027bd8a40..30c200d5bcd5 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.h
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.h
@@ -59,6 +59,7 @@
59#ifndef _AIC7XXX_LINUX_H_ 59#ifndef _AIC7XXX_LINUX_H_
60#define _AIC7XXX_LINUX_H_ 60#define _AIC7XXX_LINUX_H_
61 61
62#include <linux/config.h>
62#include <linux/types.h> 63#include <linux/types.h>
63#include <linux/blkdev.h> 64#include <linux/blkdev.h>
64#include <linux/delay.h> 65#include <linux/delay.h>
@@ -66,18 +67,21 @@
66#include <linux/pci.h> 67#include <linux/pci.h>
67#include <linux/smp_lock.h> 68#include <linux/smp_lock.h>
68#include <linux/version.h> 69#include <linux/version.h>
70#include <linux/interrupt.h>
69#include <linux/module.h> 71#include <linux/module.h>
72#include <linux/slab.h>
70#include <asm/byteorder.h> 73#include <asm/byteorder.h>
71#include <asm/io.h> 74#include <asm/io.h>
72 75
73#include <linux/interrupt.h> /* For tasklet support. */ 76#include <scsi/scsi.h>
74#include <linux/config.h> 77#include <scsi/scsi_cmnd.h>
75#include <linux/slab.h> 78#include <scsi/scsi_eh.h>
79#include <scsi/scsi_device.h>
80#include <scsi/scsi_host.h>
81#include <scsi/scsi_tcq.h>
76 82
77/* Core SCSI definitions */ 83/* Core SCSI definitions */
78#define AIC_LIB_PREFIX ahc 84#define AIC_LIB_PREFIX ahc
79#include "scsi.h"
80#include <scsi/scsi_host.h>
81 85
82/* Name space conflict with BSD queue macros */ 86/* Name space conflict with BSD queue macros */
83#ifdef LIST_HEAD 87#ifdef LIST_HEAD
@@ -106,7 +110,7 @@
106/************************* Forward Declarations *******************************/ 110/************************* Forward Declarations *******************************/
107struct ahc_softc; 111struct ahc_softc;
108typedef struct pci_dev *ahc_dev_softc_t; 112typedef struct pci_dev *ahc_dev_softc_t;
109typedef Scsi_Cmnd *ahc_io_ctx_t; 113typedef struct scsi_cmnd *ahc_io_ctx_t;
110 114
111/******************************* Byte Order ***********************************/ 115/******************************* Byte Order ***********************************/
112#define ahc_htobe16(x) cpu_to_be16(x) 116#define ahc_htobe16(x) cpu_to_be16(x)
@@ -144,7 +148,7 @@ typedef Scsi_Cmnd *ahc_io_ctx_t;
144extern u_int aic7xxx_no_probe; 148extern u_int aic7xxx_no_probe;
145extern u_int aic7xxx_allow_memio; 149extern u_int aic7xxx_allow_memio;
146extern int aic7xxx_detect_complete; 150extern int aic7xxx_detect_complete;
147extern Scsi_Host_Template aic7xxx_driver_template; 151extern struct scsi_host_template aic7xxx_driver_template;
148 152
149/***************************** Bus Space/DMA **********************************/ 153/***************************** Bus Space/DMA **********************************/
150 154
@@ -174,11 +178,7 @@ struct ahc_linux_dma_tag
174}; 178};
175typedef struct ahc_linux_dma_tag* bus_dma_tag_t; 179typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
176 180
177struct ahc_linux_dmamap 181typedef dma_addr_t bus_dmamap_t;
178{
179 dma_addr_t bus_addr;
180};
181typedef struct ahc_linux_dmamap* bus_dmamap_t;
182 182
183typedef int bus_dma_filter_t(void*, dma_addr_t); 183typedef int bus_dma_filter_t(void*, dma_addr_t);
184typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int); 184typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
@@ -281,12 +281,6 @@ ahc_scb_timer_reset(struct scb *scb, u_int usec)
281/***************************** SMP support ************************************/ 281/***************************** SMP support ************************************/
282#include <linux/spinlock.h> 282#include <linux/spinlock.h>
283 283
284#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
285#define AHC_SCSI_HAS_HOST_LOCK 1
286#else
287#define AHC_SCSI_HAS_HOST_LOCK 0
288#endif
289
290#define AIC7XXX_DRIVER_VERSION "6.2.36" 284#define AIC7XXX_DRIVER_VERSION "6.2.36"
291 285
292/**************************** Front End Queues ********************************/ 286/**************************** Front End Queues ********************************/
@@ -328,20 +322,15 @@ struct ahc_cmd {
328 */ 322 */
329TAILQ_HEAD(ahc_busyq, ahc_cmd); 323TAILQ_HEAD(ahc_busyq, ahc_cmd);
330typedef enum { 324typedef enum {
331 AHC_DEV_UNCONFIGURED = 0x01,
332 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */ 325 AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
333 AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
334 AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
335 AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */ 326 AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
336 AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */ 327 AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
337 AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */ 328 AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
338 AHC_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */
339} ahc_linux_dev_flags; 329} ahc_linux_dev_flags;
340 330
341struct ahc_linux_target; 331struct ahc_linux_target;
342struct ahc_linux_device { 332struct ahc_linux_device {
343 TAILQ_ENTRY(ahc_linux_device) links; 333 TAILQ_ENTRY(ahc_linux_device) links;
344 struct ahc_busyq busyq;
345 334
346 /* 335 /*
347 * The number of transactions currently 336 * The number of transactions currently
@@ -382,11 +371,6 @@ struct ahc_linux_device {
382 ahc_linux_dev_flags flags; 371 ahc_linux_dev_flags flags;
383 372
384 /* 373 /*
385 * Per device timer.
386 */
387 struct timer_list timer;
388
389 /*
390 * The high limit for the tags variable. 374 * The high limit for the tags variable.
391 */ 375 */
392 u_int maxtags; 376 u_int maxtags;
@@ -419,7 +403,7 @@ struct ahc_linux_device {
419#define AHC_OTAG_THRESH 500 403#define AHC_OTAG_THRESH 500
420 404
421 int lun; 405 int lun;
422 Scsi_Device *scsi_device; 406 struct scsi_device *scsi_device;
423 struct ahc_linux_target *target; 407 struct ahc_linux_target *target;
424}; 408};
425 409
@@ -439,32 +423,16 @@ struct ahc_linux_target {
439 * manner and are allocated below 4GB, the number of S/G segments is 423 * manner and are allocated below 4GB, the number of S/G segments is
440 * unrestricted. 424 * unrestricted.
441 */ 425 */
442#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
443/*
444 * We dynamically adjust the number of segments in pre-2.5 kernels to
445 * avoid fragmentation issues in the SCSI mid-layer's private memory
446 * allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details.
447 */
448extern u_int ahc_linux_nseg;
449#define AHC_NSEG ahc_linux_nseg
450#define AHC_LINUX_MIN_NSEG 64
451#else
452#define AHC_NSEG 128 426#define AHC_NSEG 128
453#endif
454 427
455/* 428/*
456 * Per-SCB OSM storage. 429 * Per-SCB OSM storage.
457 */ 430 */
458typedef enum {
459 AHC_UP_EH_SEMAPHORE = 0x1
460} ahc_linux_scb_flags;
461
462struct scb_platform_data { 431struct scb_platform_data {
463 struct ahc_linux_device *dev; 432 struct ahc_linux_device *dev;
464 dma_addr_t buf_busaddr; 433 dma_addr_t buf_busaddr;
465 uint32_t xfer_len; 434 uint32_t xfer_len;
466 uint32_t sense_resid; /* Auto-Sense residual */ 435 uint32_t sense_resid; /* Auto-Sense residual */
467 ahc_linux_scb_flags flags;
468}; 436};
469 437
470/* 438/*
@@ -473,39 +441,24 @@ struct scb_platform_data {
473 * alignment restrictions of the various platforms supported by 441 * alignment restrictions of the various platforms supported by
474 * this driver. 442 * this driver.
475 */ 443 */
476typedef enum {
477 AHC_RUN_CMPLT_Q_TIMER = 0x10
478} ahc_linux_softc_flags;
479
480TAILQ_HEAD(ahc_completeq, ahc_cmd);
481
482struct ahc_platform_data { 444struct ahc_platform_data {
483 /* 445 /*
484 * Fields accessed from interrupt context. 446 * Fields accessed from interrupt context.
485 */ 447 */
486 struct ahc_linux_target *targets[AHC_NUM_TARGETS]; 448 struct ahc_linux_target *targets[AHC_NUM_TARGETS];
487 TAILQ_HEAD(, ahc_linux_device) device_runq;
488 struct ahc_completeq completeq;
489 449
490 spinlock_t spin_lock; 450 spinlock_t spin_lock;
491 struct tasklet_struct runq_tasklet;
492 u_int qfrozen; 451 u_int qfrozen;
493 pid_t dv_pid;
494 struct timer_list completeq_timer;
495 struct timer_list reset_timer; 452 struct timer_list reset_timer;
496 struct semaphore eh_sem; 453 struct semaphore eh_sem;
497 struct semaphore dv_sem;
498 struct semaphore dv_cmd_sem; /* XXX This needs to be in
499 * the target struct
500 */
501 struct scsi_device *dv_scsi_dev;
502 struct Scsi_Host *host; /* pointer to scsi host */ 454 struct Scsi_Host *host; /* pointer to scsi host */
503#define AHC_LINUX_NOIRQ ((uint32_t)~0) 455#define AHC_LINUX_NOIRQ ((uint32_t)~0)
504 uint32_t irq; /* IRQ for this adapter */ 456 uint32_t irq; /* IRQ for this adapter */
505 uint32_t bios_address; 457 uint32_t bios_address;
506 uint32_t mem_busaddr; /* Mem Base Addr */ 458 uint32_t mem_busaddr; /* Mem Base Addr */
507 uint64_t hw_dma_mask; 459
508 ahc_linux_softc_flags flags; 460#define AHC_UP_EH_SEMAPHORE 0x1
461 uint32_t flags;
509}; 462};
510 463
511/************************** OS Utility Wrappers *******************************/ 464/************************** OS Utility Wrappers *******************************/
@@ -594,7 +547,7 @@ ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
594 547
595/**************************** Initialization **********************************/ 548/**************************** Initialization **********************************/
596int ahc_linux_register_host(struct ahc_softc *, 549int ahc_linux_register_host(struct ahc_softc *,
597 Scsi_Host_Template *); 550 struct scsi_host_template *);
598 551
599uint64_t ahc_linux_get_memsize(void); 552uint64_t ahc_linux_get_memsize(void);
600 553
@@ -615,17 +568,6 @@ static __inline void ahc_lockinit(struct ahc_softc *);
615static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags); 568static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
616static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags); 569static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
617 570
618/* Lock acquisition and release of the above lock in midlayer entry points. */
619static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *,
620 unsigned long *flags);
621static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *,
622 unsigned long *flags);
623
624/* Lock held during command compeletion to the upper layer */
625static __inline void ahc_done_lockinit(struct ahc_softc *);
626static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
627static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
628
629/* Lock held during ahc_list manipulation and ahc softc frees */ 571/* Lock held during ahc_list manipulation and ahc softc frees */
630extern spinlock_t ahc_list_spinlock; 572extern spinlock_t ahc_list_spinlock;
631static __inline void ahc_list_lockinit(void); 573static __inline void ahc_list_lockinit(void);
@@ -651,57 +593,6 @@ ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
651} 593}
652 594
653static __inline void 595static __inline void
654ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags)
655{
656 /*
657 * In 2.5.X and some 2.4.X versions, the midlayer takes our
658 * lock just before calling us, so we avoid locking again.
659 * For other kernel versions, the io_request_lock is taken
660 * just before our entry point is called. In this case, we
661 * trade the io_request_lock for our per-softc lock.
662 */
663#if AHC_SCSI_HAS_HOST_LOCK == 0
664 spin_unlock(&io_request_lock);
665 spin_lock(&ahc->platform_data->spin_lock);
666#endif
667}
668
669static __inline void
670ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags)
671{
672#if AHC_SCSI_HAS_HOST_LOCK == 0
673 spin_unlock(&ahc->platform_data->spin_lock);
674 spin_lock(&io_request_lock);
675#endif
676}
677
678static __inline void
679ahc_done_lockinit(struct ahc_softc *ahc)
680{
681 /*
682 * In 2.5.X, our own lock is held during completions.
683 * In previous versions, the io_request_lock is used.
684 * In either case, we can't initialize this lock again.
685 */
686}
687
688static __inline void
689ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
690{
691#if AHC_SCSI_HAS_HOST_LOCK == 0
692 spin_lock_irqsave(&io_request_lock, *flags);
693#endif
694}
695
696static __inline void
697ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
698{
699#if AHC_SCSI_HAS_HOST_LOCK == 0
700 spin_unlock_irqrestore(&io_request_lock, *flags);
701#endif
702}
703
704static __inline void
705ahc_list_lockinit(void) 596ahc_list_lockinit(void)
706{ 597{
707 spin_lock_init(&ahc_list_spinlock); 598 spin_lock_init(&ahc_list_spinlock);
@@ -767,12 +658,6 @@ typedef enum
767} ahc_power_state; 658} ahc_power_state;
768 659
769/**************************** VL/EISA Routines ********************************/ 660/**************************** VL/EISA Routines ********************************/
770#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
771 && (defined(__i386__) || defined(__alpha__)) \
772 && (!defined(CONFIG_EISA)))
773#define CONFIG_EISA
774#endif
775
776#ifdef CONFIG_EISA 661#ifdef CONFIG_EISA
777extern uint32_t aic7xxx_probe_eisa_vl; 662extern uint32_t aic7xxx_probe_eisa_vl;
778int ahc_linux_eisa_init(void); 663int ahc_linux_eisa_init(void);
@@ -888,22 +773,18 @@ ahc_flush_device_writes(struct ahc_softc *ahc)
888} 773}
889 774
890/**************************** Proc FS Support *********************************/ 775/**************************** Proc FS Support *********************************/
891#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
892int ahc_linux_proc_info(char *, char **, off_t, int, int, int);
893#else
894int ahc_linux_proc_info(struct Scsi_Host *, char *, char **, 776int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
895 off_t, int, int); 777 off_t, int, int);
896#endif
897 778
898/*************************** Domain Validation ********************************/ 779/*************************** Domain Validation ********************************/
899/*********************** Transaction Access Wrappers *************************/ 780/*********************** Transaction Access Wrappers *************************/
900static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t); 781static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
901static __inline void ahc_set_transaction_status(struct scb *, uint32_t); 782static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
902static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t); 783static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
903static __inline void ahc_set_scsi_status(struct scb *, uint32_t); 784static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
904static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd); 785static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
905static __inline uint32_t ahc_get_transaction_status(struct scb *); 786static __inline uint32_t ahc_get_transaction_status(struct scb *);
906static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd); 787static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
907static __inline uint32_t ahc_get_scsi_status(struct scb *); 788static __inline uint32_t ahc_get_scsi_status(struct scb *);
908static __inline void ahc_set_transaction_tag(struct scb *, int, u_int); 789static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
909static __inline u_long ahc_get_transfer_length(struct scb *); 790static __inline u_long ahc_get_transfer_length(struct scb *);
@@ -922,7 +803,7 @@ static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
922static __inline void ahc_freeze_scb(struct scb *scb); 803static __inline void ahc_freeze_scb(struct scb *scb);
923 804
924static __inline 805static __inline
925void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status) 806void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
926{ 807{
927 cmd->result &= ~(CAM_STATUS_MASK << 16); 808 cmd->result &= ~(CAM_STATUS_MASK << 16);
928 cmd->result |= status << 16; 809 cmd->result |= status << 16;
@@ -935,7 +816,7 @@ void ahc_set_transaction_status(struct scb *scb, uint32_t status)
935} 816}
936 817
937static __inline 818static __inline
938void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status) 819void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
939{ 820{
940 cmd->result &= ~0xFFFF; 821 cmd->result &= ~0xFFFF;
941 cmd->result |= status; 822 cmd->result |= status;
@@ -948,7 +829,7 @@ void ahc_set_scsi_status(struct scb *scb, uint32_t status)
948} 829}
949 830
950static __inline 831static __inline
951uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd) 832uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
952{ 833{
953 return ((cmd->result >> 16) & CAM_STATUS_MASK); 834 return ((cmd->result >> 16) & CAM_STATUS_MASK);
954} 835}
@@ -960,7 +841,7 @@ uint32_t ahc_get_transaction_status(struct scb *scb)
960} 841}
961 842
962static __inline 843static __inline
963uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd) 844uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
964{ 845{
965 return (cmd->result & 0xFFFF); 846 return (cmd->result & 0xFFFF);
966} 847}
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 6f6674aa31ef..2a0ebce83e7a 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -221,13 +221,11 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
221 && ahc_linux_get_memsize() > 0x80000000 221 && ahc_linux_get_memsize() > 0x80000000
222 && pci_set_dma_mask(pdev, mask_39bit) == 0) { 222 && pci_set_dma_mask(pdev, mask_39bit) == 0) {
223 ahc->flags |= AHC_39BIT_ADDRESSING; 223 ahc->flags |= AHC_39BIT_ADDRESSING;
224 ahc->platform_data->hw_dma_mask = mask_39bit;
225 } else { 224 } else {
226 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { 225 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
227 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n"); 226 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
228 return (-ENODEV); 227 return (-ENODEV);
229 } 228 }
230 ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
231 } 229 }
232 ahc->dev_softc = pci; 230 ahc->dev_softc = pci;
233 error = ahc_pci_config(ahc, entry); 231 error = ahc_pci_config(ahc, entry);
@@ -236,15 +234,8 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
236 return (-error); 234 return (-error);
237 } 235 }
238 pci_set_drvdata(pdev, ahc); 236 pci_set_drvdata(pdev, ahc);
239 if (aic7xxx_detect_complete) { 237 if (aic7xxx_detect_complete)
240#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
241 ahc_linux_register_host(ahc, &aic7xxx_driver_template); 238 ahc_linux_register_host(ahc, &aic7xxx_driver_template);
242#else
243 printf("aic7xxx: ignoring PCI device found after "
244 "initialization\n");
245 return (-ENODEV);
246#endif
247 }
248 return (0); 239 return (0);
249} 240}
250 241
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 85e80eecc9d0..5fece859fbd9 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -289,13 +289,8 @@ done:
289 * Return information to handle /proc support for the driver. 289 * Return information to handle /proc support for the driver.
290 */ 290 */
291int 291int
292#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
293ahc_linux_proc_info(char *buffer, char **start, off_t offset,
294 int length, int hostno, int inout)
295#else
296ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start, 292ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
297 off_t offset, int length, int inout) 293 off_t offset, int length, int inout)
298#endif
299{ 294{
300 struct ahc_softc *ahc; 295 struct ahc_softc *ahc;
301 struct info_str info; 296 struct info_str info;
@@ -307,15 +302,7 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
307 302
308 retval = -EINVAL; 303 retval = -EINVAL;
309 ahc_list_lock(&s); 304 ahc_list_lock(&s);
310#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
311 TAILQ_FOREACH(ahc, &ahc_tailq, links) {
312 if (ahc->platform_data->host->host_no == hostno)
313 break;
314 }
315#else
316 ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata); 305 ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
317#endif
318
319 if (ahc == NULL) 306 if (ahc == NULL)
320 goto done; 307 goto done;
321 308
diff --git a/drivers/scsi/aic7xxx/aiclib.c b/drivers/scsi/aic7xxx/aiclib.c
index 79bfd9efd8ed..7c5a6db0e672 100644
--- a/drivers/scsi/aic7xxx/aiclib.c
+++ b/drivers/scsi/aic7xxx/aiclib.c
@@ -35,7 +35,6 @@
35#include <linux/version.h> 35#include <linux/version.h>
36 36
37/* Core SCSI definitions */ 37/* Core SCSI definitions */
38#include "scsi.h"
39#include <scsi/scsi_host.h> 38#include <scsi/scsi_host.h>
40#include "aiclib.h" 39#include "aiclib.h"
41#include "cam.h" 40#include "cam.h"
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 3867f91ef8c7..3be546439252 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -153,6 +153,7 @@ static struct ata_port_operations piix_pata_ops = {
153 153
154 .port_start = ata_port_start, 154 .port_start = ata_port_start,
155 .port_stop = ata_port_stop, 155 .port_stop = ata_port_stop,
156 .host_stop = ata_host_stop,
156}; 157};
157 158
158static struct ata_port_operations piix_sata_ops = { 159static struct ata_port_operations piix_sata_ops = {
@@ -180,6 +181,7 @@ static struct ata_port_operations piix_sata_ops = {
180 181
181 .port_start = ata_port_start, 182 .port_start = ata_port_start,
182 .port_stop = ata_port_stop, 183 .port_stop = ata_port_stop,
184 .host_stop = ata_host_stop,
183}; 185};
184 186
185static struct ata_port_info piix_port_info[] = { 187static struct ata_port_info piix_port_info[] = {
@@ -663,15 +665,6 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
663 return ata_pci_init_one(pdev, port_info, n_ports); 665 return ata_pci_init_one(pdev, port_info, n_ports);
664} 666}
665 667
666/**
667 * piix_init -
668 *
669 * LOCKING:
670 *
671 * RETURNS:
672 *
673 */
674
675static int __init piix_init(void) 668static int __init piix_init(void)
676{ 669{
677 int rc; 670 int rc;
@@ -687,13 +680,6 @@ static int __init piix_init(void)
687 return 0; 680 return 0;
688} 681}
689 682
690/**
691 * piix_exit -
692 *
693 * LOCKING:
694 *
695 */
696
697static void __exit piix_exit(void) 683static void __exit piix_exit(void)
698{ 684{
699 pci_unregister_driver(&piix_pci_driver); 685 pci_unregister_driver(&piix_pci_driver);
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 2e2486b035dd..83f062ed9082 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -179,8 +179,18 @@ static void idescsi_input_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsigne
179 return; 179 return;
180 } 180 }
181 count = min(pc->sg->length - pc->b_count, bcount); 181 count = min(pc->sg->length - pc->b_count, bcount);
182 buf = page_address(pc->sg->page) + pc->sg->offset; 182 if (PageHighMem(pc->sg->page)) {
183 drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count); 183 unsigned long flags;
184
185 local_irq_save(flags);
186 buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
187 drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
188 kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
189 local_irq_restore(flags);
190 } else {
191 buf = page_address(pc->sg->page) + pc->sg->offset;
192 drive->hwif->atapi_input_bytes(drive, buf + pc->b_count, count);
193 }
184 bcount -= count; pc->b_count += count; 194 bcount -= count; pc->b_count += count;
185 if (pc->b_count == pc->sg->length) { 195 if (pc->b_count == pc->sg->length) {
186 pc->sg++; 196 pc->sg++;
@@ -201,8 +211,18 @@ static void idescsi_output_buffers (ide_drive_t *drive, idescsi_pc_t *pc, unsign
201 return; 211 return;
202 } 212 }
203 count = min(pc->sg->length - pc->b_count, bcount); 213 count = min(pc->sg->length - pc->b_count, bcount);
204 buf = page_address(pc->sg->page) + pc->sg->offset; 214 if (PageHighMem(pc->sg->page)) {
205 drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count); 215 unsigned long flags;
216
217 local_irq_save(flags);
218 buf = kmap_atomic(pc->sg->page, KM_IRQ0) + pc->sg->offset;
219 drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
220 kunmap_atomic(buf - pc->sg->offset, KM_IRQ0);
221 local_irq_restore(flags);
222 } else {
223 buf = page_address(pc->sg->page) + pc->sg->offset;
224 drive->hwif->atapi_output_bytes(drive, buf + pc->b_count, count);
225 }
206 bcount -= count; pc->b_count += count; 226 bcount -= count; pc->b_count += count;
207 if (pc->b_count == pc->sg->length) { 227 if (pc->b_count == pc->sg->length) {
208 pc->sg++; 228 pc->sg++;
@@ -713,7 +733,6 @@ static void idescsi_add_settings(ide_drive_t *drive)
713 */ 733 */
714static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi) 734static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
715{ 735{
716 DRIVER(drive)->busy++;
717 if (drive->id && (drive->id->config & 0x0060) == 0x20) 736 if (drive->id && (drive->id->config & 0x0060) == 0x20)
718 set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags); 737 set_bit (IDESCSI_DRQ_INTERRUPT, &scsi->flags);
719 set_bit(IDESCSI_TRANSFORM, &scsi->transform); 738 set_bit(IDESCSI_TRANSFORM, &scsi->transform);
@@ -722,17 +741,16 @@ static void idescsi_setup (ide_drive_t *drive, idescsi_scsi_t *scsi)
722 set_bit(IDESCSI_LOG_CMD, &scsi->log); 741 set_bit(IDESCSI_LOG_CMD, &scsi->log);
723#endif /* IDESCSI_DEBUG_LOG */ 742#endif /* IDESCSI_DEBUG_LOG */
724 idescsi_add_settings(drive); 743 idescsi_add_settings(drive);
725 DRIVER(drive)->busy--;
726} 744}
727 745
728static int idescsi_cleanup (ide_drive_t *drive) 746static int ide_scsi_remove(struct device *dev)
729{ 747{
748 ide_drive_t *drive = to_ide_device(dev);
730 struct Scsi_Host *scsihost = drive->driver_data; 749 struct Scsi_Host *scsihost = drive->driver_data;
731 struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost); 750 struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost);
732 struct gendisk *g = scsi->disk; 751 struct gendisk *g = scsi->disk;
733 752
734 if (ide_unregister_subdriver(drive)) 753 ide_unregister_subdriver(drive, scsi->driver);
735 return 1;
736 754
737 ide_unregister_region(g); 755 ide_unregister_region(g);
738 756
@@ -746,7 +764,7 @@ static int idescsi_cleanup (ide_drive_t *drive)
746 return 0; 764 return 0;
747} 765}
748 766
749static int idescsi_attach(ide_drive_t *drive); 767static int ide_scsi_probe(struct device *);
750 768
751#ifdef CONFIG_PROC_FS 769#ifdef CONFIG_PROC_FS
752static ide_proc_entry_t idescsi_proc[] = { 770static ide_proc_entry_t idescsi_proc[] = {
@@ -757,24 +775,22 @@ static ide_proc_entry_t idescsi_proc[] = {
757# define idescsi_proc NULL 775# define idescsi_proc NULL
758#endif 776#endif
759 777
760/*
761 * IDE subdriver functions, registered with ide.c
762 */
763static ide_driver_t idescsi_driver = { 778static ide_driver_t idescsi_driver = {
764 .owner = THIS_MODULE, 779 .owner = THIS_MODULE,
765 .name = "ide-scsi", 780 .gen_driver = {
781 .name = "ide-scsi",
782 .bus = &ide_bus_type,
783 .probe = ide_scsi_probe,
784 .remove = ide_scsi_remove,
785 },
766 .version = IDESCSI_VERSION, 786 .version = IDESCSI_VERSION,
767 .media = ide_scsi, 787 .media = ide_scsi,
768 .busy = 0,
769 .supports_dsc_overlap = 0, 788 .supports_dsc_overlap = 0,
770 .proc = idescsi_proc, 789 .proc = idescsi_proc,
771 .attach = idescsi_attach,
772 .cleanup = idescsi_cleanup,
773 .do_request = idescsi_do_request, 790 .do_request = idescsi_do_request,
774 .end_request = idescsi_end_request, 791 .end_request = idescsi_end_request,
775 .error = idescsi_atapi_error, 792 .error = idescsi_atapi_error,
776 .abort = idescsi_atapi_abort, 793 .abort = idescsi_atapi_abort,
777 .drives = LIST_HEAD_INIT(idescsi_driver.drives),
778}; 794};
779 795
780static int idescsi_ide_open(struct inode *inode, struct file *filp) 796static int idescsi_ide_open(struct inode *inode, struct file *filp)
@@ -821,8 +837,6 @@ static struct block_device_operations idescsi_ops = {
821 .ioctl = idescsi_ide_ioctl, 837 .ioctl = idescsi_ide_ioctl,
822}; 838};
823 839
824static int idescsi_attach(ide_drive_t *drive);
825
826static int idescsi_slave_configure(struct scsi_device * sdp) 840static int idescsi_slave_configure(struct scsi_device * sdp)
827{ 841{
828 /* Configure detected device */ 842 /* Configure detected device */
@@ -1095,8 +1109,9 @@ static struct scsi_host_template idescsi_template = {
1095 .proc_name = "ide-scsi", 1109 .proc_name = "ide-scsi",
1096}; 1110};
1097 1111
1098static int idescsi_attach(ide_drive_t *drive) 1112static int ide_scsi_probe(struct device *dev)
1099{ 1113{
1114 ide_drive_t *drive = to_ide_device(dev);
1100 idescsi_scsi_t *idescsi; 1115 idescsi_scsi_t *idescsi;
1101 struct Scsi_Host *host; 1116 struct Scsi_Host *host;
1102 struct gendisk *g; 1117 struct gendisk *g;
@@ -1112,7 +1127,7 @@ static int idescsi_attach(ide_drive_t *drive)
1112 !drive->present || 1127 !drive->present ||
1113 drive->media == ide_disk || 1128 drive->media == ide_disk ||
1114 !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t)))) 1129 !(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
1115 return 1; 1130 return -ENODEV;
1116 1131
1117 g = alloc_disk(1 << PARTN_BITS); 1132 g = alloc_disk(1 << PARTN_BITS);
1118 if (!g) 1133 if (!g)
@@ -1138,20 +1153,19 @@ static int idescsi_attach(ide_drive_t *drive)
1138 idescsi->host = host; 1153 idescsi->host = host;
1139 idescsi->disk = g; 1154 idescsi->disk = g;
1140 g->private_data = &idescsi->driver; 1155 g->private_data = &idescsi->driver;
1141 err = ide_register_subdriver(drive, &idescsi_driver); 1156 ide_register_subdriver(drive, &idescsi_driver);
1157 err = 0;
1158 idescsi_setup(drive, idescsi);
1159 g->fops = &idescsi_ops;
1160 ide_register_region(g);
1161 err = scsi_add_host(host, &drive->gendev);
1142 if (!err) { 1162 if (!err) {
1143 idescsi_setup (drive, idescsi); 1163 scsi_scan_host(host);
1144 g->fops = &idescsi_ops; 1164 return 0;
1145 ide_register_region(g);
1146 err = scsi_add_host(host, &drive->gendev);
1147 if (!err) {
1148 scsi_scan_host(host);
1149 return 0;
1150 }
1151 /* fall through on error */
1152 ide_unregister_region(g);
1153 ide_unregister_subdriver(drive);
1154 } 1165 }
1166 /* fall through on error */
1167 ide_unregister_region(g);
1168 ide_unregister_subdriver(drive, &idescsi_driver);
1155 1169
1156 put_disk(g); 1170 put_disk(g);
1157out_host_put: 1171out_host_put:
@@ -1161,12 +1175,12 @@ out_host_put:
1161 1175
1162static int __init init_idescsi_module(void) 1176static int __init init_idescsi_module(void)
1163{ 1177{
1164 return ide_register_driver(&idescsi_driver); 1178 return driver_register(&idescsi_driver.gen_driver);
1165} 1179}
1166 1180
1167static void __exit exit_idescsi_module(void) 1181static void __exit exit_idescsi_module(void)
1168{ 1182{
1169 ide_unregister_driver(&idescsi_driver); 1183 driver_unregister(&idescsi_driver.gen_driver);
1170} 1184}
1171 1185
1172module_init(init_idescsi_module); 1186module_init(init_idescsi_module);
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 8b5a3f00083d..84c4770e5bb4 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -186,6 +186,28 @@ static void ata_tf_load_mmio(struct ata_port *ap, struct ata_taskfile *tf)
186 ata_wait_idle(ap); 186 ata_wait_idle(ap);
187} 187}
188 188
189
190/**
191 * ata_tf_load - send taskfile registers to host controller
192 * @ap: Port to which output is sent
193 * @tf: ATA taskfile register set
194 *
195 * Outputs ATA taskfile to standard ATA host controller using MMIO
196 * or PIO as indicated by the ATA_FLAG_MMIO flag.
197 * Writes the control, feature, nsect, lbal, lbam, and lbah registers.
198 * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
199 * hob_lbal, hob_lbam, and hob_lbah.
200 *
201 * This function waits for idle (!BUSY and !DRQ) after writing
202 * registers. If the control register has a new value, this
203 * function also waits for idle after writing control and before
204 * writing the remaining registers.
205 *
206 * May be used as the tf_load() entry in ata_port_operations.
207 *
208 * LOCKING:
209 * Inherited from caller.
210 */
189void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf) 211void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf)
190{ 212{
191 if (ap->flags & ATA_FLAG_MMIO) 213 if (ap->flags & ATA_FLAG_MMIO)
@@ -195,11 +217,11 @@ void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf)
195} 217}
196 218
197/** 219/**
198 * ata_exec_command - issue ATA command to host controller 220 * ata_exec_command_pio - issue ATA command to host controller
199 * @ap: port to which command is being issued 221 * @ap: port to which command is being issued
200 * @tf: ATA taskfile register set 222 * @tf: ATA taskfile register set
201 * 223 *
202 * Issues PIO/MMIO write to ATA command register, with proper 224 * Issues PIO write to ATA command register, with proper
203 * synchronization with interrupt handler / other threads. 225 * synchronization with interrupt handler / other threads.
204 * 226 *
205 * LOCKING: 227 * LOCKING:
@@ -235,6 +257,18 @@ static void ata_exec_command_mmio(struct ata_port *ap, struct ata_taskfile *tf)
235 ata_pause(ap); 257 ata_pause(ap);
236} 258}
237 259
260
261/**
262 * ata_exec_command - issue ATA command to host controller
263 * @ap: port to which command is being issued
264 * @tf: ATA taskfile register set
265 *
266 * Issues PIO/MMIO write to ATA command register, with proper
267 * synchronization with interrupt handler / other threads.
268 *
269 * LOCKING:
270 * spin_lock_irqsave(host_set lock)
271 */
238void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf) 272void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf)
239{ 273{
240 if (ap->flags & ATA_FLAG_MMIO) 274 if (ap->flags & ATA_FLAG_MMIO)
@@ -305,7 +339,7 @@ void ata_tf_to_host_nolock(struct ata_port *ap, struct ata_taskfile *tf)
305} 339}
306 340
307/** 341/**
308 * ata_tf_read - input device's ATA taskfile shadow registers 342 * ata_tf_read_pio - input device's ATA taskfile shadow registers
309 * @ap: Port from which input is read 343 * @ap: Port from which input is read
310 * @tf: ATA taskfile register set for storing input 344 * @tf: ATA taskfile register set for storing input
311 * 345 *
@@ -368,6 +402,23 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
368 } 402 }
369} 403}
370 404
405
406/**
407 * ata_tf_read - input device's ATA taskfile shadow registers
408 * @ap: Port from which input is read
409 * @tf: ATA taskfile register set for storing input
410 *
411 * Reads ATA taskfile registers for currently-selected device
412 * into @tf.
413 *
414 * Reads nsect, lbal, lbam, lbah, and device. If ATA_TFLAG_LBA48
415 * is set, also reads the hob registers.
416 *
417 * May be used as the tf_read() entry in ata_port_operations.
418 *
419 * LOCKING:
420 * Inherited from caller.
421 */
371void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) 422void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
372{ 423{
373 if (ap->flags & ATA_FLAG_MMIO) 424 if (ap->flags & ATA_FLAG_MMIO)
@@ -381,7 +432,7 @@ void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
381 * @ap: port where the device is 432 * @ap: port where the device is
382 * 433 *
383 * Reads ATA taskfile status register for currently-selected device 434 * Reads ATA taskfile status register for currently-selected device
384 * and return it's value. This also clears pending interrupts 435 * and return its value. This also clears pending interrupts
385 * from this device 436 * from this device
386 * 437 *
387 * LOCKING: 438 * LOCKING:
@@ -397,7 +448,7 @@ static u8 ata_check_status_pio(struct ata_port *ap)
397 * @ap: port where the device is 448 * @ap: port where the device is
398 * 449 *
399 * Reads ATA taskfile status register for currently-selected device 450 * Reads ATA taskfile status register for currently-selected device
400 * via MMIO and return it's value. This also clears pending interrupts 451 * via MMIO and return its value. This also clears pending interrupts
401 * from this device 452 * from this device
402 * 453 *
403 * LOCKING: 454 * LOCKING:
@@ -408,6 +459,20 @@ static u8 ata_check_status_mmio(struct ata_port *ap)
408 return readb((void __iomem *) ap->ioaddr.status_addr); 459 return readb((void __iomem *) ap->ioaddr.status_addr);
409} 460}
410 461
462
463/**
464 * ata_check_status - Read device status reg & clear interrupt
465 * @ap: port where the device is
466 *
467 * Reads ATA taskfile status register for currently-selected device
468 * and return its value. This also clears pending interrupts
469 * from this device
470 *
471 * May be used as the check_status() entry in ata_port_operations.
472 *
473 * LOCKING:
474 * Inherited from caller.
475 */
411u8 ata_check_status(struct ata_port *ap) 476u8 ata_check_status(struct ata_port *ap)
412{ 477{
413 if (ap->flags & ATA_FLAG_MMIO) 478 if (ap->flags & ATA_FLAG_MMIO)
@@ -415,6 +480,20 @@ u8 ata_check_status(struct ata_port *ap)
415 return ata_check_status_pio(ap); 480 return ata_check_status_pio(ap);
416} 481}
417 482
483
484/**
485 * ata_altstatus - Read device alternate status reg
486 * @ap: port where the device is
487 *
488 * Reads ATA taskfile alternate status register for
489 * currently-selected device and return its value.
490 *
491 * Note: may NOT be used as the check_altstatus() entry in
492 * ata_port_operations.
493 *
494 * LOCKING:
495 * Inherited from caller.
496 */
418u8 ata_altstatus(struct ata_port *ap) 497u8 ata_altstatus(struct ata_port *ap)
419{ 498{
420 if (ap->ops->check_altstatus) 499 if (ap->ops->check_altstatus)
@@ -425,6 +504,20 @@ u8 ata_altstatus(struct ata_port *ap)
425 return inb(ap->ioaddr.altstatus_addr); 504 return inb(ap->ioaddr.altstatus_addr);
426} 505}
427 506
507
508/**
509 * ata_chk_err - Read device error reg
510 * @ap: port where the device is
511 *
512 * Reads ATA taskfile error register for
513 * currently-selected device and return its value.
514 *
515 * Note: may NOT be used as the check_err() entry in
516 * ata_port_operations.
517 *
518 * LOCKING:
519 * Inherited from caller.
520 */
428u8 ata_chk_err(struct ata_port *ap) 521u8 ata_chk_err(struct ata_port *ap)
429{ 522{
430 if (ap->ops->check_err) 523 if (ap->ops->check_err)
@@ -873,10 +966,24 @@ void ata_dev_id_string(u16 *id, unsigned char *s,
873 } 966 }
874} 967}
875 968
969
970/**
971 * ata_noop_dev_select - Select device 0/1 on ATA bus
972 * @ap: ATA channel to manipulate
973 * @device: ATA device (numbered from zero) to select
974 *
975 * This function performs no actual function.
976 *
977 * May be used as the dev_select() entry in ata_port_operations.
978 *
979 * LOCKING:
980 * caller.
981 */
876void ata_noop_dev_select (struct ata_port *ap, unsigned int device) 982void ata_noop_dev_select (struct ata_port *ap, unsigned int device)
877{ 983{
878} 984}
879 985
986
880/** 987/**
881 * ata_std_dev_select - Select device 0/1 on ATA bus 988 * ata_std_dev_select - Select device 0/1 on ATA bus
882 * @ap: ATA channel to manipulate 989 * @ap: ATA channel to manipulate
@@ -884,7 +991,9 @@ void ata_noop_dev_select (struct ata_port *ap, unsigned int device)
884 * 991 *
885 * Use the method defined in the ATA specification to 992 * Use the method defined in the ATA specification to
886 * make either device 0, or device 1, active on the 993 * make either device 0, or device 1, active on the
887 * ATA channel. 994 * ATA channel. Works with both PIO and MMIO.
995 *
996 * May be used as the dev_select() entry in ata_port_operations.
888 * 997 *
889 * LOCKING: 998 * LOCKING:
890 * caller. 999 * caller.
@@ -1221,7 +1330,12 @@ void ata_dev_config(struct ata_port *ap, unsigned int i)
1221 * ata_bus_probe - Reset and probe ATA bus 1330 * ata_bus_probe - Reset and probe ATA bus
1222 * @ap: Bus to probe 1331 * @ap: Bus to probe
1223 * 1332 *
1333 * Master ATA bus probing function. Initiates a hardware-dependent
1334 * bus reset, then attempts to identify any devices found on
1335 * the bus.
1336 *
1224 * LOCKING: 1337 * LOCKING:
1338 * PCI/etc. bus probe sem.
1225 * 1339 *
1226 * RETURNS: 1340 * RETURNS:
1227 * Zero on success, non-zero on error. 1341 * Zero on success, non-zero on error.
@@ -1259,10 +1373,14 @@ err_out:
1259} 1373}
1260 1374
1261/** 1375/**
1262 * ata_port_probe - 1376 * ata_port_probe - Mark port as enabled
1263 * @ap: 1377 * @ap: Port for which we indicate enablement
1264 * 1378 *
1265 * LOCKING: 1379 * Modify @ap data structure such that the system
1380 * thinks that the entire port is enabled.
1381 *
1382 * LOCKING: host_set lock, or some other form of
1383 * serialization.
1266 */ 1384 */
1267 1385
1268void ata_port_probe(struct ata_port *ap) 1386void ata_port_probe(struct ata_port *ap)
@@ -1271,10 +1389,15 @@ void ata_port_probe(struct ata_port *ap)
1271} 1389}
1272 1390
1273/** 1391/**
1274 * __sata_phy_reset - 1392 * __sata_phy_reset - Wake/reset a low-level SATA PHY
1275 * @ap: 1393 * @ap: SATA port associated with target SATA PHY.
1394 *
1395 * This function issues commands to standard SATA Sxxx
1396 * PHY registers, to wake up the phy (and device), and
1397 * clear any reset condition.
1276 * 1398 *
1277 * LOCKING: 1399 * LOCKING:
1400 * PCI/etc. bus probe sem.
1278 * 1401 *
1279 */ 1402 */
1280void __sata_phy_reset(struct ata_port *ap) 1403void __sata_phy_reset(struct ata_port *ap)
@@ -1283,11 +1406,11 @@ void __sata_phy_reset(struct ata_port *ap)
1283 unsigned long timeout = jiffies + (HZ * 5); 1406 unsigned long timeout = jiffies + (HZ * 5);
1284 1407
1285 if (ap->flags & ATA_FLAG_SATA_RESET) { 1408 if (ap->flags & ATA_FLAG_SATA_RESET) {
1286 scr_write(ap, SCR_CONTROL, 0x301); /* issue phy wake/reset */ 1409 /* issue phy wake/reset */
1287 scr_read(ap, SCR_STATUS); /* dummy read; flush */ 1410 scr_write_flush(ap, SCR_CONTROL, 0x301);
1288 udelay(400); /* FIXME: a guess */ 1411 udelay(400); /* FIXME: a guess */
1289 } 1412 }
1290 scr_write(ap, SCR_CONTROL, 0x300); /* issue phy wake/clear reset */ 1413 scr_write_flush(ap, SCR_CONTROL, 0x300); /* phy wake/clear reset */
1291 1414
1292 /* wait for phy to become ready, if necessary */ 1415 /* wait for phy to become ready, if necessary */
1293 do { 1416 do {
@@ -1319,10 +1442,14 @@ void __sata_phy_reset(struct ata_port *ap)
1319} 1442}
1320 1443
1321/** 1444/**
1322 * __sata_phy_reset - 1445 * sata_phy_reset - Reset SATA bus.
1323 * @ap: 1446 * @ap: SATA port associated with target SATA PHY.
1447 *
1448 * This function resets the SATA bus, and then probes
1449 * the bus for devices.
1324 * 1450 *
1325 * LOCKING: 1451 * LOCKING:
1452 * PCI/etc. bus probe sem.
1326 * 1453 *
1327 */ 1454 */
1328void sata_phy_reset(struct ata_port *ap) 1455void sata_phy_reset(struct ata_port *ap)
@@ -1334,10 +1461,16 @@ void sata_phy_reset(struct ata_port *ap)
1334} 1461}
1335 1462
1336/** 1463/**
1337 * ata_port_disable - 1464 * ata_port_disable - Disable port.
1338 * @ap: 1465 * @ap: Port to be disabled.
1339 * 1466 *
1340 * LOCKING: 1467 * Modify @ap data structure such that the system
1468 * thinks that the entire port is disabled, and should
1469 * never attempt to probe or communicate with devices
1470 * on this port.
1471 *
1472 * LOCKING: host_set lock, or some other form of
1473 * serialization.
1341 */ 1474 */
1342 1475
1343void ata_port_disable(struct ata_port *ap) 1476void ata_port_disable(struct ata_port *ap)
@@ -1446,7 +1579,10 @@ static void ata_host_set_dma(struct ata_port *ap, u8 xfer_mode,
1446 * ata_set_mode - Program timings and issue SET FEATURES - XFER 1579 * ata_set_mode - Program timings and issue SET FEATURES - XFER
1447 * @ap: port on which timings will be programmed 1580 * @ap: port on which timings will be programmed
1448 * 1581 *
1582 * Set ATA device disk transfer mode (PIO3, UDMA6, etc.).
1583 *
1449 * LOCKING: 1584 * LOCKING:
1585 * PCI/etc. bus probe sem.
1450 * 1586 *
1451 */ 1587 */
1452static void ata_set_mode(struct ata_port *ap) 1588static void ata_set_mode(struct ata_port *ap)
@@ -1497,7 +1633,10 @@ err_out:
1497 * @tmout_pat: impatience timeout 1633 * @tmout_pat: impatience timeout
1498 * @tmout: overall timeout 1634 * @tmout: overall timeout
1499 * 1635 *
1500 * LOCKING: 1636 * Sleep until ATA Status register bit BSY clears,
1637 * or a timeout occurs.
1638 *
1639 * LOCKING: None.
1501 * 1640 *
1502 */ 1641 */
1503 1642
@@ -1583,10 +1722,14 @@ static void ata_bus_post_reset(struct ata_port *ap, unsigned int devmask)
1583} 1722}
1584 1723
1585/** 1724/**
1586 * ata_bus_edd - 1725 * ata_bus_edd - Issue EXECUTE DEVICE DIAGNOSTIC command.
1587 * @ap: 1726 * @ap: Port to reset and probe
1727 *
1728 * Use the EXECUTE DEVICE DIAGNOSTIC command to reset and
1729 * probe the bus. Not often used these days.
1588 * 1730 *
1589 * LOCKING: 1731 * LOCKING:
1732 * PCI/etc. bus probe sem.
1590 * 1733 *
1591 */ 1734 */
1592 1735
@@ -1663,8 +1806,8 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
1663 * the device is ATA or ATAPI. 1806 * the device is ATA or ATAPI.
1664 * 1807 *
1665 * LOCKING: 1808 * LOCKING:
1666 * Inherited from caller. Some functions called by this function 1809 * PCI/etc. bus probe sem.
1667 * obtain the host_set lock. 1810 * Obtains host_set lock.
1668 * 1811 *
1669 * SIDE EFFECTS: 1812 * SIDE EFFECTS:
1670 * Sets ATA_FLAG_PORT_DISABLED if bus reset fails. 1813 * Sets ATA_FLAG_PORT_DISABLED if bus reset fails.
@@ -1906,7 +2049,11 @@ static int fgb(u32 bitmap)
1906 * @xfer_mode_out: (output) SET FEATURES - XFER MODE code 2049 * @xfer_mode_out: (output) SET FEATURES - XFER MODE code
1907 * @xfer_shift_out: (output) bit shift that selects this mode 2050 * @xfer_shift_out: (output) bit shift that selects this mode
1908 * 2051 *
2052 * Based on host and device capabilities, determine the
2053 * maximum transfer mode that is amenable to all.
2054 *
1909 * LOCKING: 2055 * LOCKING:
2056 * PCI/etc. bus probe sem.
1910 * 2057 *
1911 * RETURNS: 2058 * RETURNS:
1912 * Zero on success, negative on error. 2059 * Zero on success, negative on error.
@@ -1939,7 +2086,11 @@ static int ata_choose_xfer_mode(struct ata_port *ap,
1939 * @ap: Port associated with device @dev 2086 * @ap: Port associated with device @dev
1940 * @dev: Device to which command will be sent 2087 * @dev: Device to which command will be sent
1941 * 2088 *
2089 * Issue SET FEATURES - XFER MODE command to device @dev
2090 * on port @ap.
2091 *
1942 * LOCKING: 2092 * LOCKING:
2093 * PCI/etc. bus probe sem.
1943 */ 2094 */
1944 2095
1945static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev) 2096static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
@@ -1977,10 +2128,13 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
1977} 2128}
1978 2129
1979/** 2130/**
1980 * ata_sg_clean - 2131 * ata_sg_clean - Unmap DMA memory associated with command
1981 * @qc: 2132 * @qc: Command containing DMA memory to be released
2133 *
2134 * Unmap all mapped DMA memory associated with this command.
1982 * 2135 *
1983 * LOCKING: 2136 * LOCKING:
2137 * spin_lock_irqsave(host_set lock)
1984 */ 2138 */
1985 2139
1986static void ata_sg_clean(struct ata_queued_cmd *qc) 2140static void ata_sg_clean(struct ata_queued_cmd *qc)
@@ -2011,7 +2165,11 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
2011 * ata_fill_sg - Fill PCI IDE PRD table 2165 * ata_fill_sg - Fill PCI IDE PRD table
2012 * @qc: Metadata associated with taskfile to be transferred 2166 * @qc: Metadata associated with taskfile to be transferred
2013 * 2167 *
2168 * Fill PCI IDE PRD (scatter-gather) table with segments
2169 * associated with the current disk command.
2170 *
2014 * LOCKING: 2171 * LOCKING:
2172 * spin_lock_irqsave(host_set lock)
2015 * 2173 *
2016 */ 2174 */
2017static void ata_fill_sg(struct ata_queued_cmd *qc) 2175static void ata_fill_sg(struct ata_queued_cmd *qc)
@@ -2058,7 +2216,13 @@ static void ata_fill_sg(struct ata_queued_cmd *qc)
2058 * ata_check_atapi_dma - Check whether ATAPI DMA can be supported 2216 * ata_check_atapi_dma - Check whether ATAPI DMA can be supported
2059 * @qc: Metadata associated with taskfile to check 2217 * @qc: Metadata associated with taskfile to check
2060 * 2218 *
2219 * Allow low-level driver to filter ATA PACKET commands, returning
2220 * a status indicating whether or not it is OK to use DMA for the
2221 * supplied PACKET command.
2222 *
2061 * LOCKING: 2223 * LOCKING:
2224 * spin_lock_irqsave(host_set lock)
2225 *
2062 * RETURNS: 0 when ATAPI DMA can be used 2226 * RETURNS: 0 when ATAPI DMA can be used
2063 * nonzero otherwise 2227 * nonzero otherwise
2064 */ 2228 */
@@ -2076,6 +2240,8 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc)
2076 * ata_qc_prep - Prepare taskfile for submission 2240 * ata_qc_prep - Prepare taskfile for submission
2077 * @qc: Metadata associated with taskfile to be prepared 2241 * @qc: Metadata associated with taskfile to be prepared
2078 * 2242 *
2243 * Prepare ATA taskfile for submission.
2244 *
2079 * LOCKING: 2245 * LOCKING:
2080 * spin_lock_irqsave(host_set lock) 2246 * spin_lock_irqsave(host_set lock)
2081 */ 2247 */
@@ -2087,6 +2253,32 @@ void ata_qc_prep(struct ata_queued_cmd *qc)
2087 ata_fill_sg(qc); 2253 ata_fill_sg(qc);
2088} 2254}
2089 2255
2256/**
2257 * ata_sg_init_one - Associate command with memory buffer
2258 * @qc: Command to be associated
2259 * @buf: Memory buffer
2260 * @buflen: Length of memory buffer, in bytes.
2261 *
2262 * Initialize the data-related elements of queued_cmd @qc
2263 * to point to a single memory buffer, @buf of byte length @buflen.
2264 *
2265 * LOCKING:
2266 * spin_lock_irqsave(host_set lock)
2267 */
2268
2269
2270
2271/**
2272 * ata_sg_init_one - Prepare a one-entry scatter-gather list.
2273 * @qc: Queued command
2274 * @buf: transfer buffer
2275 * @buflen: length of buf
2276 *
2277 * Builds a single-entry scatter-gather list to initiate a
2278 * transfer utilizing the specified buffer.
2279 *
2280 * LOCKING:
2281 */
2090void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen) 2282void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
2091{ 2283{
2092 struct scatterlist *sg; 2284 struct scatterlist *sg;
@@ -2101,9 +2293,35 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
2101 sg = qc->sg; 2293 sg = qc->sg;
2102 sg->page = virt_to_page(buf); 2294 sg->page = virt_to_page(buf);
2103 sg->offset = (unsigned long) buf & ~PAGE_MASK; 2295 sg->offset = (unsigned long) buf & ~PAGE_MASK;
2104 sg_dma_len(sg) = buflen; 2296 sg->length = buflen;
2105} 2297}
2106 2298
2299/**
2300 * ata_sg_init - Associate command with scatter-gather table.
2301 * @qc: Command to be associated
2302 * @sg: Scatter-gather table.
2303 * @n_elem: Number of elements in s/g table.
2304 *
2305 * Initialize the data-related elements of queued_cmd @qc
2306 * to point to a scatter-gather table @sg, containing @n_elem
2307 * elements.
2308 *
2309 * LOCKING:
2310 * spin_lock_irqsave(host_set lock)
2311 */
2312
2313
2314/**
2315 * ata_sg_init - Assign a scatter gather list to a queued command
2316 * @qc: Queued command
2317 * @sg: Scatter-gather list
2318 * @n_elem: length of sg list
2319 *
2320 * Attaches a scatter-gather list to a queued command.
2321 *
2322 * LOCKING:
2323 */
2324
2107void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, 2325void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
2108 unsigned int n_elem) 2326 unsigned int n_elem)
2109{ 2327{
@@ -2113,14 +2331,16 @@ void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
2113} 2331}
2114 2332
2115/** 2333/**
2116 * ata_sg_setup_one - 2334 * ata_sg_setup_one - DMA-map the memory buffer associated with a command.
2117 * @qc: 2335 * @qc: Command with memory buffer to be mapped.
2336 *
2337 * DMA-map the memory buffer associated with queued_cmd @qc.
2118 * 2338 *
2119 * LOCKING: 2339 * LOCKING:
2120 * spin_lock_irqsave(host_set lock) 2340 * spin_lock_irqsave(host_set lock)
2121 * 2341 *
2122 * RETURNS: 2342 * RETURNS:
2123 * 2343 * Zero on success, negative on error.
2124 */ 2344 */
2125 2345
2126static int ata_sg_setup_one(struct ata_queued_cmd *qc) 2346static int ata_sg_setup_one(struct ata_queued_cmd *qc)
@@ -2131,11 +2351,12 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
2131 dma_addr_t dma_address; 2351 dma_addr_t dma_address;
2132 2352
2133 dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt, 2353 dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt,
2134 sg_dma_len(sg), dir); 2354 sg->length, dir);
2135 if (dma_mapping_error(dma_address)) 2355 if (dma_mapping_error(dma_address))
2136 return -1; 2356 return -1;
2137 2357
2138 sg_dma_address(sg) = dma_address; 2358 sg_dma_address(sg) = dma_address;
2359 sg_dma_len(sg) = sg->length;
2139 2360
2140 DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg), 2361 DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg),
2141 qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read"); 2362 qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
@@ -2144,13 +2365,16 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc)
2144} 2365}
2145 2366
2146/** 2367/**
2147 * ata_sg_setup - 2368 * ata_sg_setup - DMA-map the scatter-gather table associated with a command.
2148 * @qc: 2369 * @qc: Command with scatter-gather table to be mapped.
2370 *
2371 * DMA-map the scatter-gather table associated with queued_cmd @qc.
2149 * 2372 *
2150 * LOCKING: 2373 * LOCKING:
2151 * spin_lock_irqsave(host_set lock) 2374 * spin_lock_irqsave(host_set lock)
2152 * 2375 *
2153 * RETURNS: 2376 * RETURNS:
2377 * Zero on success, negative on error.
2154 * 2378 *
2155 */ 2379 */
2156 2380
@@ -2180,6 +2404,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
2180 * @ap: 2404 * @ap:
2181 * 2405 *
2182 * LOCKING: 2406 * LOCKING:
2407 * None. (executing in kernel thread context)
2183 * 2408 *
2184 * RETURNS: 2409 * RETURNS:
2185 * 2410 *
@@ -2227,6 +2452,7 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
2227 * @ap: 2452 * @ap:
2228 * 2453 *
2229 * LOCKING: 2454 * LOCKING:
2455 * None. (executing in kernel thread context)
2230 */ 2456 */
2231 2457
2232static void ata_pio_complete (struct ata_port *ap) 2458static void ata_pio_complete (struct ata_port *ap)
@@ -2269,6 +2495,18 @@ static void ata_pio_complete (struct ata_port *ap)
2269 ata_qc_complete(qc, drv_stat); 2495 ata_qc_complete(qc, drv_stat);
2270} 2496}
2271 2497
2498
2499/**
2500 * swap_buf_le16 -
2501 * @buf: Buffer to swap
2502 * @buf_words: Number of 16-bit words in buffer.
2503 *
2504 * Swap halves of 16-bit words if needed to convert from
2505 * little-endian byte order to native cpu byte order, or
2506 * vice-versa.
2507 *
2508 * LOCKING:
2509 */
2272void swap_buf_le16(u16 *buf, unsigned int buf_words) 2510void swap_buf_le16(u16 *buf, unsigned int buf_words)
2273{ 2511{
2274#ifdef __BIG_ENDIAN 2512#ifdef __BIG_ENDIAN
@@ -2340,7 +2578,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
2340 qc->cursect++; 2578 qc->cursect++;
2341 qc->cursg_ofs++; 2579 qc->cursg_ofs++;
2342 2580
2343 if ((qc->cursg_ofs * ATA_SECT_SIZE) == sg_dma_len(&sg[qc->cursg])) { 2581 if ((qc->cursg_ofs * ATA_SECT_SIZE) == (&sg[qc->cursg])->length) {
2344 qc->cursg++; 2582 qc->cursg++;
2345 qc->cursg_ofs = 0; 2583 qc->cursg_ofs = 0;
2346 } 2584 }
@@ -2377,7 +2615,7 @@ next_page:
2377 page = nth_page(page, (offset >> PAGE_SHIFT)); 2615 page = nth_page(page, (offset >> PAGE_SHIFT));
2378 offset %= PAGE_SIZE; 2616 offset %= PAGE_SIZE;
2379 2617
2380 count = min(sg_dma_len(sg) - qc->cursg_ofs, bytes); 2618 count = min(sg->length - qc->cursg_ofs, bytes);
2381 2619
2382 /* don't cross page boundaries */ 2620 /* don't cross page boundaries */
2383 count = min(count, (unsigned int)PAGE_SIZE - offset); 2621 count = min(count, (unsigned int)PAGE_SIZE - offset);
@@ -2388,7 +2626,7 @@ next_page:
2388 qc->curbytes += count; 2626 qc->curbytes += count;
2389 qc->cursg_ofs += count; 2627 qc->cursg_ofs += count;
2390 2628
2391 if (qc->cursg_ofs == sg_dma_len(sg)) { 2629 if (qc->cursg_ofs == sg->length) {
2392 qc->cursg++; 2630 qc->cursg++;
2393 qc->cursg_ofs = 0; 2631 qc->cursg_ofs = 0;
2394 } 2632 }
@@ -2401,7 +2639,7 @@ next_page:
2401 kunmap(page); 2639 kunmap(page);
2402 2640
2403 if (bytes) { 2641 if (bytes) {
2404 if (qc->cursg_ofs < sg_dma_len(sg)) 2642 if (qc->cursg_ofs < sg->length)
2405 goto next_page; 2643 goto next_page;
2406 goto next_sg; 2644 goto next_sg;
2407 } 2645 }
@@ -2444,6 +2682,7 @@ err_out:
2444 * @ap: 2682 * @ap:
2445 * 2683 *
2446 * LOCKING: 2684 * LOCKING:
2685 * None. (executing in kernel thread context)
2447 */ 2686 */
2448 2687
2449static void ata_pio_block(struct ata_port *ap) 2688static void ata_pio_block(struct ata_port *ap)
@@ -2569,7 +2808,7 @@ static void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
2569 ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer)); 2808 ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
2570 qc->dma_dir = DMA_FROM_DEVICE; 2809 qc->dma_dir = DMA_FROM_DEVICE;
2571 2810
2572 memset(&qc->cdb, 0, sizeof(ap->cdb_len)); 2811 memset(&qc->cdb, 0, ap->cdb_len);
2573 qc->cdb[0] = REQUEST_SENSE; 2812 qc->cdb[0] = REQUEST_SENSE;
2574 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; 2813 qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2575 2814
@@ -2612,6 +2851,7 @@ static void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
2612 * transaction completed successfully. 2851 * transaction completed successfully.
2613 * 2852 *
2614 * LOCKING: 2853 * LOCKING:
2854 * Inherited from SCSI layer (none, can sleep)
2615 */ 2855 */
2616 2856
2617static void ata_qc_timeout(struct ata_queued_cmd *qc) 2857static void ata_qc_timeout(struct ata_queued_cmd *qc)
@@ -2721,6 +2961,7 @@ out:
2721 * @dev: Device from whom we request an available command structure 2961 * @dev: Device from whom we request an available command structure
2722 * 2962 *
2723 * LOCKING: 2963 * LOCKING:
2964 * None.
2724 */ 2965 */
2725 2966
2726static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) 2967static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
@@ -2746,6 +2987,7 @@ static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
2746 * @dev: Device from whom we request an available command structure 2987 * @dev: Device from whom we request an available command structure
2747 * 2988 *
2748 * LOCKING: 2989 * LOCKING:
2990 * None.
2749 */ 2991 */
2750 2992
2751struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap, 2993struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
@@ -2810,6 +3052,7 @@ static void __ata_qc_complete(struct ata_queued_cmd *qc)
2810 * in case something prevents using it. 3052 * in case something prevents using it.
2811 * 3053 *
2812 * LOCKING: 3054 * LOCKING:
3055 * spin_lock_irqsave(host_set lock)
2813 * 3056 *
2814 */ 3057 */
2815void ata_qc_free(struct ata_queued_cmd *qc) 3058void ata_qc_free(struct ata_queued_cmd *qc)
@@ -2823,9 +3066,13 @@ void ata_qc_free(struct ata_queued_cmd *qc)
2823/** 3066/**
2824 * ata_qc_complete - Complete an active ATA command 3067 * ata_qc_complete - Complete an active ATA command
2825 * @qc: Command to complete 3068 * @qc: Command to complete
2826 * @drv_stat: ATA status register contents 3069 * @drv_stat: ATA Status register contents
3070 *
3071 * Indicate to the mid and upper layers that an ATA
3072 * command has completed, with either an ok or not-ok status.
2827 * 3073 *
2828 * LOCKING: 3074 * LOCKING:
3075 * spin_lock_irqsave(host_set lock)
2829 * 3076 *
2830 */ 3077 */
2831 3078
@@ -2841,6 +3088,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
2841 3088
2842 /* call completion callback */ 3089 /* call completion callback */
2843 rc = qc->complete_fn(qc, drv_stat); 3090 rc = qc->complete_fn(qc, drv_stat);
3091 qc->flags &= ~ATA_QCFLAG_ACTIVE;
2844 3092
2845 /* if callback indicates not to complete command (non-zero), 3093 /* if callback indicates not to complete command (non-zero),
2846 * return immediately 3094 * return immediately
@@ -2920,6 +3168,7 @@ err_out:
2920 return -1; 3168 return -1;
2921} 3169}
2922 3170
3171
2923/** 3172/**
2924 * ata_qc_issue_prot - issue taskfile to device in proto-dependent manner 3173 * ata_qc_issue_prot - issue taskfile to device in proto-dependent manner
2925 * @qc: command to issue to device 3174 * @qc: command to issue to device
@@ -2929,6 +3178,8 @@ err_out:
2929 * classes called "protocols", and issuing each type of protocol 3178 * classes called "protocols", and issuing each type of protocol
2930 * is slightly different. 3179 * is slightly different.
2931 * 3180 *
3181 * May be used as the qc_issue() entry in ata_port_operations.
3182 *
2932 * LOCKING: 3183 * LOCKING:
2933 * spin_lock_irqsave(host_set lock) 3184 * spin_lock_irqsave(host_set lock)
2934 * 3185 *
@@ -2986,7 +3237,7 @@ int ata_qc_issue_prot(struct ata_queued_cmd *qc)
2986} 3237}
2987 3238
2988/** 3239/**
2989 * ata_bmdma_setup - Set up PCI IDE BMDMA transaction 3240 * ata_bmdma_setup_mmio - Set up PCI IDE BMDMA transaction
2990 * @qc: Info associated with this ATA transaction. 3241 * @qc: Info associated with this ATA transaction.
2991 * 3242 *
2992 * LOCKING: 3243 * LOCKING:
@@ -3093,6 +3344,18 @@ static void ata_bmdma_start_pio (struct ata_queued_cmd *qc)
3093 ap->ioaddr.bmdma_addr + ATA_DMA_CMD); 3344 ap->ioaddr.bmdma_addr + ATA_DMA_CMD);
3094} 3345}
3095 3346
3347
3348/**
3349 * ata_bmdma_start - Start a PCI IDE BMDMA transaction
3350 * @qc: Info associated with this ATA transaction.
3351 *
3352 * Writes the ATA_DMA_START flag to the DMA command register.
3353 *
3354 * May be used as the bmdma_start() entry in ata_port_operations.
3355 *
3356 * LOCKING:
3357 * spin_lock_irqsave(host_set lock)
3358 */
3096void ata_bmdma_start(struct ata_queued_cmd *qc) 3359void ata_bmdma_start(struct ata_queued_cmd *qc)
3097{ 3360{
3098 if (qc->ap->flags & ATA_FLAG_MMIO) 3361 if (qc->ap->flags & ATA_FLAG_MMIO)
@@ -3101,6 +3364,20 @@ void ata_bmdma_start(struct ata_queued_cmd *qc)
3101 ata_bmdma_start_pio(qc); 3364 ata_bmdma_start_pio(qc);
3102} 3365}
3103 3366
3367
3368/**
3369 * ata_bmdma_setup - Set up PCI IDE BMDMA transaction
3370 * @qc: Info associated with this ATA transaction.
3371 *
3372 * Writes address of PRD table to device's PRD Table Address
3373 * register, sets the DMA control register, and calls
3374 * ops->exec_command() to start the transfer.
3375 *
3376 * May be used as the bmdma_setup() entry in ata_port_operations.
3377 *
3378 * LOCKING:
3379 * spin_lock_irqsave(host_set lock)
3380 */
3104void ata_bmdma_setup(struct ata_queued_cmd *qc) 3381void ata_bmdma_setup(struct ata_queued_cmd *qc)
3105{ 3382{
3106 if (qc->ap->flags & ATA_FLAG_MMIO) 3383 if (qc->ap->flags & ATA_FLAG_MMIO)
@@ -3109,6 +3386,19 @@ void ata_bmdma_setup(struct ata_queued_cmd *qc)
3109 ata_bmdma_setup_pio(qc); 3386 ata_bmdma_setup_pio(qc);
3110} 3387}
3111 3388
3389
3390/**
3391 * ata_bmdma_irq_clear - Clear PCI IDE BMDMA interrupt.
3392 * @ap: Port associated with this ATA transaction.
3393 *
3394 * Clear interrupt and error flags in DMA status register.
3395 *
3396 * May be used as the irq_clear() entry in ata_port_operations.
3397 *
3398 * LOCKING:
3399 * spin_lock_irqsave(host_set lock)
3400 */
3401
3112void ata_bmdma_irq_clear(struct ata_port *ap) 3402void ata_bmdma_irq_clear(struct ata_port *ap)
3113{ 3403{
3114 if (ap->flags & ATA_FLAG_MMIO) { 3404 if (ap->flags & ATA_FLAG_MMIO) {
@@ -3121,6 +3411,19 @@ void ata_bmdma_irq_clear(struct ata_port *ap)
3121 3411
3122} 3412}
3123 3413
3414
3415/**
3416 * ata_bmdma_status - Read PCI IDE BMDMA status
3417 * @ap: Port associated with this ATA transaction.
3418 *
3419 * Read and return BMDMA status register.
3420 *
3421 * May be used as the bmdma_status() entry in ata_port_operations.
3422 *
3423 * LOCKING:
3424 * spin_lock_irqsave(host_set lock)
3425 */
3426
3124u8 ata_bmdma_status(struct ata_port *ap) 3427u8 ata_bmdma_status(struct ata_port *ap)
3125{ 3428{
3126 u8 host_stat; 3429 u8 host_stat;
@@ -3132,6 +3435,19 @@ u8 ata_bmdma_status(struct ata_port *ap)
3132 return host_stat; 3435 return host_stat;
3133} 3436}
3134 3437
3438
3439/**
3440 * ata_bmdma_stop - Stop PCI IDE BMDMA transfer
3441 * @ap: Port associated with this ATA transaction.
3442 *
3443 * Clears the ATA_DMA_START flag in the dma control register
3444 *
3445 * May be used as the bmdma_stop() entry in ata_port_operations.
3446 *
3447 * LOCKING:
3448 * spin_lock_irqsave(host_set lock)
3449 */
3450
3135void ata_bmdma_stop(struct ata_port *ap) 3451void ata_bmdma_stop(struct ata_port *ap)
3136{ 3452{
3137 if (ap->flags & ATA_FLAG_MMIO) { 3453 if (ap->flags & ATA_FLAG_MMIO) {
@@ -3231,13 +3547,18 @@ idle_irq:
3231 3547
3232/** 3548/**
3233 * ata_interrupt - Default ATA host interrupt handler 3549 * ata_interrupt - Default ATA host interrupt handler
3234 * @irq: irq line 3550 * @irq: irq line (unused)
3235 * @dev_instance: pointer to our host information structure 3551 * @dev_instance: pointer to our ata_host_set information structure
3236 * @regs: unused 3552 * @regs: unused
3237 * 3553 *
3554 * Default interrupt handler for PCI IDE devices. Calls
3555 * ata_host_intr() for each port that is not disabled.
3556 *
3238 * LOCKING: 3557 * LOCKING:
3558 * Obtains host_set lock during operation.
3239 * 3559 *
3240 * RETURNS: 3560 * RETURNS:
3561 * IRQ_NONE or IRQ_HANDLED.
3241 * 3562 *
3242 */ 3563 */
3243 3564
@@ -3259,7 +3580,8 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
3259 struct ata_queued_cmd *qc; 3580 struct ata_queued_cmd *qc;
3260 3581
3261 qc = ata_qc_from_tag(ap, ap->active_tag); 3582 qc = ata_qc_from_tag(ap, ap->active_tag);
3262 if (qc && (!(qc->tf.ctl & ATA_NIEN))) 3583 if (qc && (!(qc->tf.ctl & ATA_NIEN)) &&
3584 (qc->flags & ATA_QCFLAG_ACTIVE))
3263 handled |= ata_host_intr(ap, qc); 3585 handled |= ata_host_intr(ap, qc);
3264 } 3586 }
3265 } 3587 }
@@ -3329,6 +3651,19 @@ err_out:
3329 ata_qc_complete(qc, ATA_ERR); 3651 ata_qc_complete(qc, ATA_ERR);
3330} 3652}
3331 3653
3654
3655/**
3656 * ata_port_start - Set port up for dma.
3657 * @ap: Port to initialize
3658 *
3659 * Called just after data structures for each port are
3660 * initialized. Allocates space for PRD table.
3661 *
3662 * May be used as the port_start() entry in ata_port_operations.
3663 *
3664 * LOCKING:
3665 */
3666
3332int ata_port_start (struct ata_port *ap) 3667int ata_port_start (struct ata_port *ap)
3333{ 3668{
3334 struct device *dev = ap->host_set->dev; 3669 struct device *dev = ap->host_set->dev;
@@ -3342,6 +3677,18 @@ int ata_port_start (struct ata_port *ap)
3342 return 0; 3677 return 0;
3343} 3678}
3344 3679
3680
3681/**
3682 * ata_port_stop - Undo ata_port_start()
3683 * @ap: Port to shut down
3684 *
3685 * Frees the PRD table.
3686 *
3687 * May be used as the port_stop() entry in ata_port_operations.
3688 *
3689 * LOCKING:
3690 */
3691
3345void ata_port_stop (struct ata_port *ap) 3692void ata_port_stop (struct ata_port *ap)
3346{ 3693{
3347 struct device *dev = ap->host_set->dev; 3694 struct device *dev = ap->host_set->dev;
@@ -3349,6 +3696,13 @@ void ata_port_stop (struct ata_port *ap)
3349 dma_free_coherent(dev, ATA_PRD_TBL_SZ, ap->prd, ap->prd_dma); 3696 dma_free_coherent(dev, ATA_PRD_TBL_SZ, ap->prd, ap->prd_dma);
3350} 3697}
3351 3698
3699void ata_host_stop (struct ata_host_set *host_set)
3700{
3701 if (host_set->mmio_base)
3702 iounmap(host_set->mmio_base);
3703}
3704
3705
3352/** 3706/**
3353 * ata_host_remove - Unregister SCSI host structure with upper layers 3707 * ata_host_remove - Unregister SCSI host structure with upper layers
3354 * @ap: Port to unregister 3708 * @ap: Port to unregister
@@ -3377,7 +3731,11 @@ static void ata_host_remove(struct ata_port *ap, unsigned int do_unregister)
3377 * @ent: Probe information provided by low-level driver 3731 * @ent: Probe information provided by low-level driver
3378 * @port_no: Port number associated with this ata_port 3732 * @port_no: Port number associated with this ata_port
3379 * 3733 *
3734 * Initialize a new ata_port structure, and its associated
3735 * scsi_host.
3736 *
3380 * LOCKING: 3737 * LOCKING:
3738 * Inherited from caller.
3381 * 3739 *
3382 */ 3740 */
3383 3741
@@ -3432,9 +3790,13 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
3432 * @host_set: Collections of ports to which we add 3790 * @host_set: Collections of ports to which we add
3433 * @port_no: Port number associated with this host 3791 * @port_no: Port number associated with this host
3434 * 3792 *
3793 * Attach low-level ATA driver to system.
3794 *
3435 * LOCKING: 3795 * LOCKING:
3796 * PCI/etc. bus probe sem.
3436 * 3797 *
3437 * RETURNS: 3798 * RETURNS:
3799 * New ata_port on success, for NULL on error.
3438 * 3800 *
3439 */ 3801 */
3440 3802
@@ -3467,12 +3829,22 @@ err_out:
3467} 3829}
3468 3830
3469/** 3831/**
3470 * ata_device_add - 3832 * ata_device_add - Register hardware device with ATA and SCSI layers
3471 * @ent: 3833 * @ent: Probe information describing hardware device to be registered
3834 *
3835 * This function processes the information provided in the probe
3836 * information struct @ent, allocates the necessary ATA and SCSI
3837 * host information structures, initializes them, and registers
3838 * everything with requisite kernel subsystems.
3839 *
3840 * This function requests irqs, probes the ATA bus, and probes
3841 * the SCSI bus.
3472 * 3842 *
3473 * LOCKING: 3843 * LOCKING:
3844 * PCI/etc. bus probe sem.
3474 * 3845 *
3475 * RETURNS: 3846 * RETURNS:
3847 * Number of ports registered. Zero on error (no ports registered).
3476 * 3848 *
3477 */ 3849 */
3478 3850
@@ -3624,7 +3996,15 @@ int ata_scsi_release(struct Scsi_Host *host)
3624/** 3996/**
3625 * ata_std_ports - initialize ioaddr with standard port offsets. 3997 * ata_std_ports - initialize ioaddr with standard port offsets.
3626 * @ioaddr: IO address structure to be initialized 3998 * @ioaddr: IO address structure to be initialized
3999 *
4000 * Utility function which initializes data_addr, error_addr,
4001 * feature_addr, nsect_addr, lbal_addr, lbam_addr, lbah_addr,
4002 * device_addr, status_addr, and command_addr to standard offsets
4003 * relative to cmd_addr.
4004 *
4005 * Does not set ctl_addr, altstatus_addr, bmdma_addr, or scr_addr.
3627 */ 4006 */
4007
3628void ata_std_ports(struct ata_ioports *ioaddr) 4008void ata_std_ports(struct ata_ioports *ioaddr)
3629{ 4009{
3630 ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA; 4010 ioaddr->data_addr = ioaddr->cmd_addr + ATA_REG_DATA;
@@ -3666,6 +4046,20 @@ ata_probe_ent_alloc(struct device *dev, struct ata_port_info *port)
3666 return probe_ent; 4046 return probe_ent;
3667} 4047}
3668 4048
4049
4050
4051/**
4052 * ata_pci_init_native_mode - Initialize native-mode driver
4053 * @pdev: pci device to be initialized
4054 * @port: array[2] of pointers to port info structures.
4055 *
4056 * Utility function which allocates and initializes an
4057 * ata_probe_ent structure for a standard dual-port
4058 * PIO-based IDE controller. The returned ata_probe_ent
4059 * structure can be passed to ata_device_add(). The returned
4060 * ata_probe_ent structure should then be freed with kfree().
4061 */
4062
3669#ifdef CONFIG_PCI 4063#ifdef CONFIG_PCI
3670struct ata_probe_ent * 4064struct ata_probe_ent *
3671ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port) 4065ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port)
@@ -3747,10 +4141,19 @@ ata_pci_init_legacy_mode(struct pci_dev *pdev, struct ata_port_info **port,
3747 * @port_info: Information from low-level host driver 4141 * @port_info: Information from low-level host driver
3748 * @n_ports: Number of ports attached to host controller 4142 * @n_ports: Number of ports attached to host controller
3749 * 4143 *
4144 * This is a helper function which can be called from a driver's
4145 * xxx_init_one() probe function if the hardware uses traditional
4146 * IDE taskfile registers.
4147 *
4148 * This function calls pci_enable_device(), reserves its register
4149 * regions, sets the dma mask, enables bus master mode, and calls
4150 * ata_device_add()
4151 *
3750 * LOCKING: 4152 * LOCKING:
3751 * Inherited from PCI layer (may sleep). 4153 * Inherited from PCI layer (may sleep).
3752 * 4154 *
3753 * RETURNS: 4155 * RETURNS:
4156 * Zero on success, negative on errno-based value on error.
3754 * 4157 *
3755 */ 4158 */
3756 4159
@@ -3905,10 +4308,6 @@ void ata_pci_remove_one (struct pci_dev *pdev)
3905 } 4308 }
3906 4309
3907 free_irq(host_set->irq, host_set); 4310 free_irq(host_set->irq, host_set);
3908 if (host_set->ops->host_stop)
3909 host_set->ops->host_stop(host_set);
3910 if (host_set->mmio_base)
3911 iounmap(host_set->mmio_base);
3912 4311
3913 for (i = 0; i < host_set->n_ports; i++) { 4312 for (i = 0; i < host_set->n_ports; i++) {
3914 ap = host_set->ports[i]; 4313 ap = host_set->ports[i];
@@ -3927,6 +4326,9 @@ void ata_pci_remove_one (struct pci_dev *pdev)
3927 scsi_host_put(ap->host); 4326 scsi_host_put(ap->host);
3928 } 4327 }
3929 4328
4329 if (host_set->ops->host_stop)
4330 host_set->ops->host_stop(host_set);
4331
3930 kfree(host_set); 4332 kfree(host_set);
3931 4333
3932 pci_release_regions(pdev); 4334 pci_release_regions(pdev);
@@ -3970,15 +4372,6 @@ int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits)
3970#endif /* CONFIG_PCI */ 4372#endif /* CONFIG_PCI */
3971 4373
3972 4374
3973/**
3974 * ata_init -
3975 *
3976 * LOCKING:
3977 *
3978 * RETURNS:
3979 *
3980 */
3981
3982static int __init ata_init(void) 4375static int __init ata_init(void)
3983{ 4376{
3984 ata_wq = create_workqueue("ata"); 4377 ata_wq = create_workqueue("ata");
@@ -4024,6 +4417,7 @@ EXPORT_SYMBOL_GPL(ata_chk_err);
4024EXPORT_SYMBOL_GPL(ata_exec_command); 4417EXPORT_SYMBOL_GPL(ata_exec_command);
4025EXPORT_SYMBOL_GPL(ata_port_start); 4418EXPORT_SYMBOL_GPL(ata_port_start);
4026EXPORT_SYMBOL_GPL(ata_port_stop); 4419EXPORT_SYMBOL_GPL(ata_port_stop);
4420EXPORT_SYMBOL_GPL(ata_host_stop);
4027EXPORT_SYMBOL_GPL(ata_interrupt); 4421EXPORT_SYMBOL_GPL(ata_interrupt);
4028EXPORT_SYMBOL_GPL(ata_qc_prep); 4422EXPORT_SYMBOL_GPL(ata_qc_prep);
4029EXPORT_SYMBOL_GPL(ata_bmdma_setup); 4423EXPORT_SYMBOL_GPL(ata_bmdma_setup);
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 4c96df060c3b..7a4adc4c8f09 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -347,7 +347,10 @@ int ata_scsi_slave_config(struct scsi_device *sdev)
347 */ 347 */
348 if ((dev->flags & ATA_DFLAG_LBA48) && 348 if ((dev->flags & ATA_DFLAG_LBA48) &&
349 ((dev->flags & ATA_DFLAG_LOCK_SECTORS) == 0)) { 349 ((dev->flags & ATA_DFLAG_LOCK_SECTORS) == 0)) {
350 sdev->host->max_sectors = 2048; 350 /*
351 * do not overwrite sdev->host->max_sectors, since
352 * other drives on this host may not support LBA48
353 */
351 blk_queue_max_sectors(sdev->request_queue, 2048); 354 blk_queue_max_sectors(sdev->request_queue, 2048);
352 } 355 }
353 } 356 }
@@ -944,7 +947,7 @@ unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
944} 947}
945 948
946/** 949/**
947 * ata_scsiop_noop - 950 * ata_scsiop_noop - Command handler that simply returns success.
948 * @args: device IDENTIFY data / SCSI command of interest. 951 * @args: device IDENTIFY data / SCSI command of interest.
949 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. 952 * @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
950 * @buflen: Response buffer length. 953 * @buflen: Response buffer length.
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index 6518226b8f87..d90430bbb0de 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -26,7 +26,7 @@
26#define __LIBATA_H__ 26#define __LIBATA_H__
27 27
28#define DRV_NAME "libata" 28#define DRV_NAME "libata"
29#define DRV_VERSION "1.10" /* must be exactly four chars */ 29#define DRV_VERSION "1.11" /* must be exactly four chars */
30 30
31struct ata_scsi_args { 31struct ata_scsi_args {
32 u16 *id; 32 u16 *id;
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 579448222d69..3c97aa45772d 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -507,6 +507,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
507 int ret, i; 507 int ret, i;
508 unsigned int id, lun; 508 unsigned int id, lun;
509 unsigned long serial; 509 unsigned long serial;
510 unsigned long flags;
510 511
511 if (!CMD_SP(cmd)) 512 if (!CMD_SP(cmd))
512 return FAILED; 513 return FAILED;
@@ -519,7 +520,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
519 520
520 /* Check active list for command command. */ 521 /* Check active list for command command. */
521 spin_unlock_irq(ha->host->host_lock); 522 spin_unlock_irq(ha->host->host_lock);
522 spin_lock(&ha->hardware_lock); 523 spin_lock_irqsave(&ha->hardware_lock, flags);
523 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) { 524 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
524 sp = ha->outstanding_cmds[i]; 525 sp = ha->outstanding_cmds[i];
525 526
@@ -534,7 +535,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
534 sp->state)); 535 sp->state));
535 DEBUG3(qla2x00_print_scsi_cmd(cmd);) 536 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
536 537
537 spin_unlock(&ha->hardware_lock); 538 spin_unlock_irqrestore(&ha->hardware_lock, flags);
538 if (qla2x00_abort_command(ha, sp)) { 539 if (qla2x00_abort_command(ha, sp)) {
539 DEBUG2(printk("%s(%ld): abort_command " 540 DEBUG2(printk("%s(%ld): abort_command "
540 "mbx failed.\n", __func__, ha->host_no)); 541 "mbx failed.\n", __func__, ha->host_no));
@@ -543,20 +544,19 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
543 "mbx success.\n", __func__, ha->host_no)); 544 "mbx success.\n", __func__, ha->host_no));
544 ret = SUCCESS; 545 ret = SUCCESS;
545 } 546 }
546 spin_lock(&ha->hardware_lock); 547 spin_lock_irqsave(&ha->hardware_lock, flags);
547 548
548 break; 549 break;
549 } 550 }
551 spin_unlock_irqrestore(&ha->hardware_lock, flags);
550 552
551 /* Wait for the command to be returned. */ 553 /* Wait for the command to be returned. */
552 if (ret == SUCCESS) { 554 if (ret == SUCCESS) {
553 spin_unlock(&ha->hardware_lock);
554 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) { 555 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
555 qla_printk(KERN_ERR, ha, 556 qla_printk(KERN_ERR, ha,
556 "scsi(%ld:%d:%d): Abort handler timed out -- %lx " 557 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
557 "%x.\n", ha->host_no, id, lun, serial, ret); 558 "%x.\n", ha->host_no, id, lun, serial, ret);
558 } 559 }
559 spin_lock(&ha->hardware_lock);
560 } 560 }
561 spin_lock_irq(ha->host->host_lock); 561 spin_lock_irq(ha->host->host_lock);
562 562
@@ -588,6 +588,7 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
588 int status; 588 int status;
589 srb_t *sp; 589 srb_t *sp;
590 struct scsi_cmnd *cmd; 590 struct scsi_cmnd *cmd;
591 unsigned long flags;
591 592
592 status = 0; 593 status = 0;
593 594
@@ -596,11 +597,11 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
596 * array 597 * array
597 */ 598 */
598 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { 599 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
599 spin_lock(&ha->hardware_lock); 600 spin_lock_irqsave(&ha->hardware_lock, flags);
600 sp = ha->outstanding_cmds[cnt]; 601 sp = ha->outstanding_cmds[cnt];
601 if (sp) { 602 if (sp) {
602 cmd = sp->cmd; 603 cmd = sp->cmd;
603 spin_unlock(&ha->hardware_lock); 604 spin_unlock_irqrestore(&ha->hardware_lock, flags);
604 if (cmd->device->id == t) { 605 if (cmd->device->id == t) {
605 if (!qla2x00_eh_wait_on_command(ha, cmd)) { 606 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
606 status = 1; 607 status = 1;
@@ -608,7 +609,7 @@ qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
608 } 609 }
609 } 610 }
610 } else { 611 } else {
611 spin_unlock(&ha->hardware_lock); 612 spin_unlock_irqrestore(&ha->hardware_lock, flags);
612 } 613 }
613 } 614 }
614 return (status); 615 return (status);
@@ -740,6 +741,7 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
740 int status; 741 int status;
741 srb_t *sp; 742 srb_t *sp;
742 struct scsi_cmnd *cmd; 743 struct scsi_cmnd *cmd;
744 unsigned long flags;
743 745
744 status = 1; 746 status = 1;
745 747
@@ -748,17 +750,17 @@ qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
748 * array 750 * array
749 */ 751 */
750 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) { 752 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
751 spin_lock(&ha->hardware_lock); 753 spin_lock_irqsave(&ha->hardware_lock, flags);
752 sp = ha->outstanding_cmds[cnt]; 754 sp = ha->outstanding_cmds[cnt];
753 if (sp) { 755 if (sp) {
754 cmd = sp->cmd; 756 cmd = sp->cmd;
755 spin_unlock(&ha->hardware_lock); 757 spin_unlock_irqrestore(&ha->hardware_lock, flags);
756 status = qla2x00_eh_wait_on_command(ha, cmd); 758 status = qla2x00_eh_wait_on_command(ha, cmd);
757 if (status == 0) 759 if (status == 0)
758 break; 760 break;
759 } 761 }
760 else { 762 else {
761 spin_unlock(&ha->hardware_lock); 763 spin_unlock_irqrestore(&ha->hardware_lock, flags);
762 } 764 }
763 } 765 }
764 return (status); 766 return (status);
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 69009f853a49..b0403ccd8a25 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -329,6 +329,8 @@ static void nv_host_stop (struct ata_host_set *host_set)
329 host->host_desc->disable_hotplug(host_set); 329 host->host_desc->disable_hotplug(host_set);
330 330
331 kfree(host); 331 kfree(host);
332
333 ata_host_stop(host_set);
332} 334}
333 335
334static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 336static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index 19a13e3590f4..b18c90582e67 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -122,6 +122,7 @@ static struct ata_port_operations pdc_ata_ops = {
122 .scr_write = pdc_sata_scr_write, 122 .scr_write = pdc_sata_scr_write,
123 .port_start = pdc_port_start, 123 .port_start = pdc_port_start,
124 .port_stop = pdc_port_stop, 124 .port_stop = pdc_port_stop,
125 .host_stop = ata_host_stop,
125}; 126};
126 127
127static struct ata_port_info pdc_port_info[] = { 128static struct ata_port_info pdc_port_info[] = {
@@ -151,6 +152,8 @@ static struct ata_port_info pdc_port_info[] = {
151static struct pci_device_id pdc_ata_pci_tbl[] = { 152static struct pci_device_id pdc_ata_pci_tbl[] = {
152 { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 153 { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
153 board_2037x }, 154 board_2037x },
155 { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
156 board_2037x },
154 { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 157 { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
155 board_2037x }, 158 board_2037x },
156 { PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 159 { PCI_VENDOR_ID_PROMISE, 0x3375, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index dfd362104717..1383e8a28d72 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -536,6 +536,8 @@ static void qs_host_stop(struct ata_host_set *host_set)
536 536
537 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */ 537 writeb(0, mmio_base + QS_HCT_CTRL); /* disable host interrupts */
538 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */ 538 writeb(QS_CNFG3_GSRST, mmio_base + QS_HCF_CNFG3); /* global reset */
539
540 ata_host_stop(host_set);
539} 541}
540 542
541static void qs_host_init(unsigned int chip_id, struct ata_probe_ent *pe) 543static void qs_host_init(unsigned int chip_id, struct ata_probe_ent *pe)
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index f0489dc302a0..238580d244e6 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -82,6 +82,7 @@ static struct pci_device_id sil_pci_tbl[] = {
82 { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 }, 82 { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
83 { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 }, 83 { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
84 { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 }, 84 { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
85 { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112 },
85 { } /* terminate list */ 86 { } /* terminate list */
86}; 87};
87 88
@@ -160,6 +161,7 @@ static struct ata_port_operations sil_ops = {
160 .scr_write = sil_scr_write, 161 .scr_write = sil_scr_write,
161 .port_start = ata_port_start, 162 .port_start = ata_port_start,
162 .port_stop = ata_port_stop, 163 .port_stop = ata_port_stop,
164 .host_stop = ata_host_stop,
163}; 165};
164 166
165static struct ata_port_info sil_port_info[] = { 167static struct ata_port_info sil_port_info[] = {
diff --git a/drivers/scsi/sata_sis.c b/drivers/scsi/sata_sis.c
index 5105ddd08447..e418b89c6b9d 100644
--- a/drivers/scsi/sata_sis.c
+++ b/drivers/scsi/sata_sis.c
@@ -114,6 +114,7 @@ static struct ata_port_operations sis_ops = {
114 .scr_write = sis_scr_write, 114 .scr_write = sis_scr_write,
115 .port_start = ata_port_start, 115 .port_start = ata_port_start,
116 .port_stop = ata_port_stop, 116 .port_stop = ata_port_stop,
117 .host_stop = ata_host_stop,
117}; 118};
118 119
119static struct ata_port_info sis_port_info = { 120static struct ata_port_info sis_port_info = {
diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
index 8d1a5d25c053..edef1fa969fc 100644
--- a/drivers/scsi/sata_svw.c
+++ b/drivers/scsi/sata_svw.c
@@ -313,6 +313,7 @@ static struct ata_port_operations k2_sata_ops = {
313 .scr_write = k2_sata_scr_write, 313 .scr_write = k2_sata_scr_write,
314 .port_start = ata_port_start, 314 .port_start = ata_port_start,
315 .port_stop = ata_port_stop, 315 .port_stop = ata_port_stop,
316 .host_stop = ata_host_stop,
316}; 317};
317 318
318static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base) 319static void k2_sata_setup_port(struct ata_ioports *port, unsigned long base)
@@ -395,7 +396,7 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
395 396
396 /* Clear a magic bit in SCR1 according to Darwin, those help 397 /* Clear a magic bit in SCR1 according to Darwin, those help
397 * some funky seagate drives (though so far, those were already 398 * some funky seagate drives (though so far, those were already
398 * set by the firmware on the machines I had access to 399 * set by the firmware on the machines I had access to)
399 */ 400 */
400 writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000, 401 writel(readl(mmio_base + K2_SATA_SICR1_OFFSET) & ~0x00040000,
401 mmio_base + K2_SATA_SICR1_OFFSET); 402 mmio_base + K2_SATA_SICR1_OFFSET);
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index 70118650c461..140cea05de3f 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -245,6 +245,8 @@ static void pdc20621_host_stop(struct ata_host_set *host_set)
245 245
246 iounmap(dimm_mmio); 246 iounmap(dimm_mmio);
247 kfree(hpriv); 247 kfree(hpriv);
248
249 ata_host_stop(host_set);
248} 250}
249 251
250static int pdc_port_start(struct ata_port *ap) 252static int pdc_port_start(struct ata_port *ap)
diff --git a/drivers/scsi/sata_uli.c b/drivers/scsi/sata_uli.c
index 0bff4f475f26..a71fb54eebd3 100644
--- a/drivers/scsi/sata_uli.c
+++ b/drivers/scsi/sata_uli.c
@@ -113,6 +113,7 @@ static struct ata_port_operations uli_ops = {
113 113
114 .port_start = ata_port_start, 114 .port_start = ata_port_start,
115 .port_stop = ata_port_stop, 115 .port_stop = ata_port_stop,
116 .host_stop = ata_host_stop,
116}; 117};
117 118
118static struct ata_port_info uli_port_info = { 119static struct ata_port_info uli_port_info = {
diff --git a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c
index 3a7830667277..f43183c19a12 100644
--- a/drivers/scsi/sata_via.c
+++ b/drivers/scsi/sata_via.c
@@ -134,6 +134,7 @@ static struct ata_port_operations svia_sata_ops = {
134 134
135 .port_start = ata_port_start, 135 .port_start = ata_port_start,
136 .port_stop = ata_port_stop, 136 .port_stop = ata_port_stop,
137 .host_stop = ata_host_stop,
137}; 138};
138 139
139static struct ata_port_info svia_port_info = { 140static struct ata_port_info svia_port_info = {
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index 2c28f0ad73c2..c5e09dc6f3de 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -21,6 +21,7 @@
21#include <linux/blkdev.h> 21#include <linux/blkdev.h>
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/interrupt.h> 23#include <linux/interrupt.h>
24#include <linux/dma-mapping.h>
24#include "scsi.h" 25#include "scsi.h"
25#include <scsi/scsi_host.h> 26#include <scsi/scsi_host.h>
26#include <linux/libata.h> 27#include <linux/libata.h>
@@ -230,6 +231,7 @@ static struct ata_port_operations vsc_sata_ops = {
230 .scr_write = vsc_sata_scr_write, 231 .scr_write = vsc_sata_scr_write,
231 .port_start = ata_port_start, 232 .port_start = ata_port_start,
232 .port_stop = ata_port_stop, 233 .port_stop = ata_port_stop,
234 .host_stop = ata_host_stop,
233}; 235};
234 236
235static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base) 237static void __devinit vsc_sata_setup_port(struct ata_ioports *port, unsigned long base)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index cca772624ae7..8d0d302844a1 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1197,6 +1197,7 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
1197 if (!starget) 1197 if (!starget)
1198 return ERR_PTR(-ENOMEM); 1198 return ERR_PTR(-ENOMEM);
1199 1199
1200 get_device(&starget->dev);
1200 down(&shost->scan_mutex); 1201 down(&shost->scan_mutex);
1201 res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata); 1202 res = scsi_probe_and_add_lun(starget, lun, NULL, &sdev, 1, hostdata);
1202 if (res != SCSI_SCAN_LUN_PRESENT) 1203 if (res != SCSI_SCAN_LUN_PRESENT)
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 28966d05435c..67c6cc40ce16 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -35,7 +35,7 @@
35 35
36#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a) 36#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
37 37
38#define SPI_NUM_ATTRS 10 /* increase this if you add attributes */ 38#define SPI_NUM_ATTRS 13 /* increase this if you add attributes */
39#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always 39#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
40 * on" attributes */ 40 * on" attributes */
41#define SPI_HOST_ATTRS 1 41#define SPI_HOST_ATTRS 1
@@ -219,8 +219,11 @@ static int spi_setup_transport_attrs(struct device *dev)
219 struct scsi_target *starget = to_scsi_target(dev); 219 struct scsi_target *starget = to_scsi_target(dev);
220 220
221 spi_period(starget) = -1; /* illegal value */ 221 spi_period(starget) = -1; /* illegal value */
222 spi_min_period(starget) = 0;
222 spi_offset(starget) = 0; /* async */ 223 spi_offset(starget) = 0; /* async */
224 spi_max_offset(starget) = 255;
223 spi_width(starget) = 0; /* narrow */ 225 spi_width(starget) = 0; /* narrow */
226 spi_max_width(starget) = 1;
224 spi_iu(starget) = 0; /* no IU */ 227 spi_iu(starget) = 0; /* no IU */
225 spi_dt(starget) = 0; /* ST */ 228 spi_dt(starget) = 0; /* ST */
226 spi_qas(starget) = 0; 229 spi_qas(starget) = 0;
@@ -235,6 +238,34 @@ static int spi_setup_transport_attrs(struct device *dev)
235 return 0; 238 return 0;
236} 239}
237 240
241#define spi_transport_show_simple(field, format_string) \
242 \
243static ssize_t \
244show_spi_transport_##field(struct class_device *cdev, char *buf) \
245{ \
246 struct scsi_target *starget = transport_class_to_starget(cdev); \
247 struct spi_transport_attrs *tp; \
248 \
249 tp = (struct spi_transport_attrs *)&starget->starget_data; \
250 return snprintf(buf, 20, format_string, tp->field); \
251}
252
253#define spi_transport_store_simple(field, format_string) \
254 \
255static ssize_t \
256store_spi_transport_##field(struct class_device *cdev, const char *buf, \
257 size_t count) \
258{ \
259 int val; \
260 struct scsi_target *starget = transport_class_to_starget(cdev); \
261 struct spi_transport_attrs *tp; \
262 \
263 tp = (struct spi_transport_attrs *)&starget->starget_data; \
264 val = simple_strtoul(buf, NULL, 0); \
265 tp->field = val; \
266 return count; \
267}
268
238#define spi_transport_show_function(field, format_string) \ 269#define spi_transport_show_function(field, format_string) \
239 \ 270 \
240static ssize_t \ 271static ssize_t \
@@ -261,6 +292,25 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
261 struct spi_internal *i = to_spi_internal(shost->transportt); \ 292 struct spi_internal *i = to_spi_internal(shost->transportt); \
262 \ 293 \
263 val = simple_strtoul(buf, NULL, 0); \ 294 val = simple_strtoul(buf, NULL, 0); \
295 i->f->set_##field(starget, val); \
296 return count; \
297}
298
299#define spi_transport_store_max(field, format_string) \
300static ssize_t \
301store_spi_transport_##field(struct class_device *cdev, const char *buf, \
302 size_t count) \
303{ \
304 int val; \
305 struct scsi_target *starget = transport_class_to_starget(cdev); \
306 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
307 struct spi_internal *i = to_spi_internal(shost->transportt); \
308 struct spi_transport_attrs *tp \
309 = (struct spi_transport_attrs *)&starget->starget_data; \
310 \
311 val = simple_strtoul(buf, NULL, 0); \
312 if (val > tp->max_##field) \
313 val = tp->max_##field; \
264 i->f->set_##field(starget, val); \ 314 i->f->set_##field(starget, val); \
265 return count; \ 315 return count; \
266} 316}
@@ -272,9 +322,24 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
272 show_spi_transport_##field, \ 322 show_spi_transport_##field, \
273 store_spi_transport_##field); 323 store_spi_transport_##field);
274 324
325#define spi_transport_simple_attr(field, format_string) \
326 spi_transport_show_simple(field, format_string) \
327 spi_transport_store_simple(field, format_string) \
328static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
329 show_spi_transport_##field, \
330 store_spi_transport_##field);
331
332#define spi_transport_max_attr(field, format_string) \
333 spi_transport_show_function(field, format_string) \
334 spi_transport_store_max(field, format_string) \
335 spi_transport_simple_attr(max_##field, format_string) \
336static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
337 show_spi_transport_##field, \
338 store_spi_transport_##field);
339
275/* The Parallel SCSI Tranport Attributes: */ 340/* The Parallel SCSI Tranport Attributes: */
276spi_transport_rd_attr(offset, "%d\n"); 341spi_transport_max_attr(offset, "%d\n");
277spi_transport_rd_attr(width, "%d\n"); 342spi_transport_max_attr(width, "%d\n");
278spi_transport_rd_attr(iu, "%d\n"); 343spi_transport_rd_attr(iu, "%d\n");
279spi_transport_rd_attr(dt, "%d\n"); 344spi_transport_rd_attr(dt, "%d\n");
280spi_transport_rd_attr(qas, "%d\n"); 345spi_transport_rd_attr(qas, "%d\n");
@@ -300,26 +365,18 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
300 365
301/* Translate the period into ns according to the current spec 366/* Translate the period into ns according to the current spec
302 * for SDTR/PPR messages */ 367 * for SDTR/PPR messages */
303static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf) 368static ssize_t
304 369show_spi_transport_period_helper(struct class_device *cdev, char *buf,
370 int period)
305{ 371{
306 struct scsi_target *starget = transport_class_to_starget(cdev);
307 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
308 struct spi_transport_attrs *tp;
309 int len, picosec; 372 int len, picosec;
310 struct spi_internal *i = to_spi_internal(shost->transportt);
311
312 tp = (struct spi_transport_attrs *)&starget->starget_data;
313
314 if (i->f->get_period)
315 i->f->get_period(starget);
316 373
317 if (tp->period < 0 || tp->period > 0xff) { 374 if (period < 0 || period > 0xff) {
318 picosec = -1; 375 picosec = -1;
319 } else if (tp->period <= SPI_STATIC_PPR) { 376 } else if (period <= SPI_STATIC_PPR) {
320 picosec = ppr_to_ps[tp->period]; 377 picosec = ppr_to_ps[period];
321 } else { 378 } else {
322 picosec = tp->period * 4000; 379 picosec = period * 4000;
323 } 380 }
324 381
325 if (picosec == -1) { 382 if (picosec == -1) {
@@ -334,12 +391,9 @@ static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
334} 391}
335 392
336static ssize_t 393static ssize_t
337store_spi_transport_period(struct class_device *cdev, const char *buf, 394store_spi_transport_period_helper(struct class_device *cdev, const char *buf,
338 size_t count) 395 size_t count, int *periodp)
339{ 396{
340 struct scsi_target *starget = transport_class_to_starget(cdev);
341 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
342 struct spi_internal *i = to_spi_internal(shost->transportt);
343 int j, picosec, period = -1; 397 int j, picosec, period = -1;
344 char *endp; 398 char *endp;
345 399
@@ -368,15 +422,79 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
368 if (period > 0xff) 422 if (period > 0xff)
369 period = 0xff; 423 period = 0xff;
370 424
371 i->f->set_period(starget, period); 425 *periodp = period;
372 426
373 return count; 427 return count;
374} 428}
375 429
430static ssize_t
431show_spi_transport_period(struct class_device *cdev, char *buf)
432{
433 struct scsi_target *starget = transport_class_to_starget(cdev);
434 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
435 struct spi_internal *i = to_spi_internal(shost->transportt);
436 struct spi_transport_attrs *tp =
437 (struct spi_transport_attrs *)&starget->starget_data;
438
439 if (i->f->get_period)
440 i->f->get_period(starget);
441
442 return show_spi_transport_period_helper(cdev, buf, tp->period);
443}
444
445static ssize_t
446store_spi_transport_period(struct class_device *cdev, const char *buf,
447 size_t count)
448{
449 struct scsi_target *starget = transport_class_to_starget(cdev);
450 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
451 struct spi_internal *i = to_spi_internal(shost->transportt);
452 struct spi_transport_attrs *tp =
453 (struct spi_transport_attrs *)&starget->starget_data;
454 int period, retval;
455
456 retval = store_spi_transport_period_helper(cdev, buf, count, &period);
457
458 if (period < tp->min_period)
459 period = tp->min_period;
460
461 i->f->set_period(starget, period);
462
463 return retval;
464}
465
376static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR, 466static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR,
377 show_spi_transport_period, 467 show_spi_transport_period,
378 store_spi_transport_period); 468 store_spi_transport_period);
379 469
470static ssize_t
471show_spi_transport_min_period(struct class_device *cdev, char *buf)
472{
473 struct scsi_target *starget = transport_class_to_starget(cdev);
474 struct spi_transport_attrs *tp =
475 (struct spi_transport_attrs *)&starget->starget_data;
476
477 return show_spi_transport_period_helper(cdev, buf, tp->min_period);
478}
479
480static ssize_t
481store_spi_transport_min_period(struct class_device *cdev, const char *buf,
482 size_t count)
483{
484 struct scsi_target *starget = transport_class_to_starget(cdev);
485 struct spi_transport_attrs *tp =
486 (struct spi_transport_attrs *)&starget->starget_data;
487
488 return store_spi_transport_period_helper(cdev, buf, count,
489 &tp->min_period);
490}
491
492
493static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR,
494 show_spi_transport_min_period,
495 store_spi_transport_min_period);
496
497
380static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf) 498static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf)
381{ 499{
382 struct Scsi_Host *shost = transport_class_to_shost(cdev); 500 struct Scsi_Host *shost = transport_class_to_shost(cdev);
@@ -642,6 +760,7 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
642{ 760{
643 struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt); 761 struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
644 struct scsi_device *sdev = sreq->sr_device; 762 struct scsi_device *sdev = sreq->sr_device;
763 struct scsi_target *starget = sdev->sdev_target;
645 int len = sdev->inquiry_len; 764 int len = sdev->inquiry_len;
646 /* first set us up for narrow async */ 765 /* first set us up for narrow async */
647 DV_SET(offset, 0); 766 DV_SET(offset, 0);
@@ -655,9 +774,11 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
655 } 774 }
656 775
657 /* test width */ 776 /* test width */
658 if (i->f->set_width && sdev->wdtr) { 777 if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
659 i->f->set_width(sdev->sdev_target, 1); 778 i->f->set_width(sdev->sdev_target, 1);
660 779
780 printk("WIDTH IS %d\n", spi_max_width(starget));
781
661 if (spi_dv_device_compare_inquiry(sreq, buffer, 782 if (spi_dv_device_compare_inquiry(sreq, buffer,
662 buffer + len, 783 buffer + len,
663 DV_LOOPS) 784 DV_LOOPS)
@@ -684,8 +805,8 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
684 retry: 805 retry:
685 806
686 /* now set up to the maximum */ 807 /* now set up to the maximum */
687 DV_SET(offset, 255); 808 DV_SET(offset, spi_max_offset(starget));
688 DV_SET(period, 1); 809 DV_SET(period, spi_min_period(starget));
689 810
690 if (len == 0) { 811 if (len == 0) {
691 SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n"); 812 SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
@@ -892,6 +1013,16 @@ EXPORT_SYMBOL(spi_display_xfer_agreement);
892 if (i->f->show_##field) \ 1013 if (i->f->show_##field) \
893 count++ 1014 count++
894 1015
1016#define SETUP_RELATED_ATTRIBUTE(field, rel_field) \
1017 i->private_attrs[count] = class_device_attr_##field; \
1018 if (!i->f->set_##rel_field) { \
1019 i->private_attrs[count].attr.mode = S_IRUGO; \
1020 i->private_attrs[count].store = NULL; \
1021 } \
1022 i->attrs[count] = &i->private_attrs[count]; \
1023 if (i->f->show_##rel_field) \
1024 count++
1025
895#define SETUP_HOST_ATTRIBUTE(field) \ 1026#define SETUP_HOST_ATTRIBUTE(field) \
896 i->private_host_attrs[count] = class_device_attr_##field; \ 1027 i->private_host_attrs[count] = class_device_attr_##field; \
897 if (!i->f->set_##field) { \ 1028 if (!i->f->set_##field) { \
@@ -975,8 +1106,11 @@ spi_attach_transport(struct spi_function_template *ft)
975 i->f = ft; 1106 i->f = ft;
976 1107
977 SETUP_ATTRIBUTE(period); 1108 SETUP_ATTRIBUTE(period);
1109 SETUP_RELATED_ATTRIBUTE(min_period, period);
978 SETUP_ATTRIBUTE(offset); 1110 SETUP_ATTRIBUTE(offset);
1111 SETUP_RELATED_ATTRIBUTE(max_offset, offset);
979 SETUP_ATTRIBUTE(width); 1112 SETUP_ATTRIBUTE(width);
1113 SETUP_RELATED_ATTRIBUTE(max_width, width);
980 SETUP_ATTRIBUTE(iu); 1114 SETUP_ATTRIBUTE(iu);
981 SETUP_ATTRIBUTE(dt); 1115 SETUP_ATTRIBUTE(dt);
982 SETUP_ATTRIBUTE(qas); 1116 SETUP_ATTRIBUTE(qas);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 17:35:55 -0500