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linux-davinci
Commit 9636273d authored by Linus Torvalds's avatar Linus Torvalds
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Automatic merge of rsync://www.parisc-linux.org/~jejb/git/scsi-for-linus-2.6.git

parents 2df9fa36 2bf2c568
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Showing with 530 additions and 1310 deletions
drivers/scsi/aic7xxx/aic7770_osm.c
View file @ 9636273d
......@@ -41,7 +41,6 @@
#include "aic7xxx_osm.h"
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
#include <linux/device.h>
#include <linux/eisa.h>
......@@ -62,13 +61,6 @@ static struct eisa_driver aic7770_driver = {
};
typedef struct device *aic7770_dev_t;
#else
#define MINSLOT 1
#define NUMSLOTS 16
#define IDOFFSET 0x80
typedef void *aic7770_dev_t;
#endif
static int aic7770_linux_config(struct aic7770_identity *entry,
aic7770_dev_t dev, u_int eisaBase);
......@@ -76,7 +68,6 @@ static int aic7770_linux_config(struct aic7770_identity *entry,
int
ahc_linux_eisa_init(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
struct eisa_device_id *eid;
struct aic7770_identity *id;
int i;
......@@ -110,44 +101,6 @@ ahc_linux_eisa_init(void)
eid->sig[0] = 0;
return eisa_driver_register(&aic7770_driver);
#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
struct aic7770_identity *entry;
u_int slot;
u_int eisaBase;
u_int i;
int ret = -ENODEV;
if (aic7xxx_probe_eisa_vl == 0)
return ret;
eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
uint32_t eisa_id;
size_t id_size;
if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
continue;
eisa_id = 0;
id_size = sizeof(eisa_id);
for (i = 0; i < 4; i++) {
/* VLcards require priming*/
outb(0x80 + i, eisaBase + IDOFFSET);
eisa_id |= inb(eisaBase + IDOFFSET + i)
<< ((id_size-i-1) * 8);
}
release_region(eisaBase, AHC_EISA_IOSIZE);
if (eisa_id & 0x80000000)
continue; /* no EISA card in slot */
entry = aic7770_find_device(eisa_id);
if (entry != NULL) {
aic7770_linux_config(entry, NULL, eisaBase);
ret = 0;
}
}
return ret;
#endif
}
void
......@@ -187,11 +140,10 @@ aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
ahc_free(ahc);
return (error);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
dev->driver_data = (void *)ahc;
if (aic7xxx_detect_complete)
error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
#endif
return (error);
}
......@@ -225,7 +177,6 @@ aic7770_map_int(struct ahc_softc *ahc, u_int irq)
return (-error);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
aic7770_eisa_dev_probe(struct device *dev)
{
......@@ -261,4 +212,3 @@ aic7770_eisa_dev_remove(struct device *dev)
return (0);
}
#endif
drivers/scsi/aic7xxx/aic7xxx_osm.c
View file @ 9636273d
......@@ -134,11 +134,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
#include "aiclib.c"
#include <linux/init.h> /* __setup */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
#include "sd.h" /* For geometry detection */
#endif
#include <linux/mm.h> /* For fetching system memory size */
#include <linux/blkdev.h> /* For block_size() */
#include <linux/delay.h> /* For ssleep/msleep */
......@@ -148,11 +143,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
*/
spinlock_t ahc_list_spinlock;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/* For dynamic sglist size calculation. */
u_int ahc_linux_nseg;
#endif
/*
* Set this to the delay in seconds after SCSI bus reset.
* Note, we honor this only for the initial bus reset.
......@@ -436,15 +426,12 @@ static void ahc_linux_handle_scsi_status(struct ahc_softc *,
struct ahc_linux_device *,
struct scb *);
static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
Scsi_Cmnd *cmd);
struct scsi_cmnd *cmd);
static void ahc_linux_sem_timeout(u_long arg);
static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
static void ahc_linux_release_simq(u_long arg);
static void ahc_linux_dev_timed_unfreeze(u_long arg);
static int ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag);
static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
static void ahc_linux_size_nseg(void);
static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
struct ahc_devinfo *devinfo);
static 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*,
u_int);
static void ahc_linux_free_device(struct ahc_softc*,
struct ahc_linux_device*);
static void ahc_linux_run_device_queue(struct ahc_softc*,
struct ahc_linux_device*);
static int ahc_linux_run_command(struct ahc_softc*,
struct ahc_linux_device *,
struct scsi_cmnd *);
static void ahc_linux_setup_tag_info_global(char *p);
static aic_option_callback_t ahc_linux_setup_tag_info;
static int aic7xxx_setup(char *s);
static int ahc_linux_next_unit(void);
static void ahc_runq_tasklet(unsigned long data);
static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
/********************************* Inlines ************************************/
static __inline void ahc_schedule_runq(struct ahc_softc *ahc);
static __inline struct ahc_linux_device*
ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
u_int target, u_int lun, int alloc);
static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc,
struct ahc_linux_device *dev);
static __inline struct ahc_linux_device *
ahc_linux_next_device_to_run(struct ahc_softc *ahc);
static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc);
u_int target, u_int lun);
static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
struct ahc_dma_seg *sg,
dma_addr_t addr, bus_size_t len);
static __inline void
ahc_schedule_completeq(struct ahc_softc *ahc)
{
if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
ahc->platform_data->completeq_timer.expires = jiffies;
add_timer(&ahc->platform_data->completeq_timer);
}
}
/*
* Must be called with our lock held.
*/
static __inline void
ahc_schedule_runq(struct ahc_softc *ahc)
{
tasklet_schedule(&ahc->platform_data->runq_tasklet);
}
static __inline struct ahc_linux_device*
ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
u_int lun, int alloc)
u_int lun)
{
struct ahc_linux_target *targ;
struct ahc_linux_device *dev;
......@@ -515,102 +475,15 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
if (channel != 0)
target_offset += 8;
targ = ahc->platform_data->targets[target_offset];
if (targ == NULL) {
if (alloc != 0) {
targ = ahc_linux_alloc_target(ahc, channel, target);
if (targ == NULL)
return (NULL);
} else
return (NULL);
}
BUG_ON(targ == NULL);
dev = targ->devices[lun];
if (dev == NULL && alloc != 0)
dev = ahc_linux_alloc_device(ahc, targ, lun);
return (dev);
}
#define AHC_LINUX_MAX_RETURNED_ERRORS 4
static struct ahc_cmd *
ahc_linux_run_complete_queue(struct ahc_softc *ahc)
{
struct ahc_cmd *acmd;
u_long done_flags;
int with_errors;
with_errors = 0;
ahc_done_lock(ahc, &done_flags);
while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
Scsi_Cmnd *cmd;
if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
/*
* Linux uses stack recursion to requeue
* commands that need to be retried. Avoid
* blowing out the stack by "spoon feeding"
* commands that completed with error back
* the operating system in case they are going
* to be retried. "ick"
*/
ahc_schedule_completeq(ahc);
break;
}
TAILQ_REMOVE(&ahc->platform_data->completeq,
acmd, acmd_links.tqe);
cmd = &acmd_scsi_cmd(acmd);
cmd->host_scribble = NULL;
if (ahc_cmd_get_transaction_status(cmd) != DID_OK
|| (cmd->result & 0xFF) != SCSI_STATUS_OK)
with_errors++;
cmd->scsi_done(cmd);
}
ahc_done_unlock(ahc, &done_flags);
return (acmd);
}
static __inline void
ahc_linux_check_device_queue(struct ahc_softc *ahc,
struct ahc_linux_device *dev)
{
if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0
&& dev->active == 0) {
dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY;
dev->qfrozen--;
}
if (TAILQ_FIRST(&dev->busyq) == NULL
|| dev->openings == 0 || dev->qfrozen != 0)
return;
ahc_linux_run_device_queue(ahc, dev);
}
static __inline struct ahc_linux_device *
ahc_linux_next_device_to_run(struct ahc_softc *ahc)
{
if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
|| (ahc->platform_data->qfrozen != 0))
return (NULL);
return (TAILQ_FIRST(&ahc->platform_data->device_runq));
}
static __inline void
ahc_linux_run_device_queues(struct ahc_softc *ahc)
{
struct ahc_linux_device *dev;
while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
dev->flags &= ~AHC_DEV_ON_RUN_LIST;
ahc_linux_check_device_queue(ahc, dev);
}
return dev;
}
static __inline void
ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
{
Scsi_Cmnd *cmd;
struct scsi_cmnd *cmd;
cmd = scb->io_ctx;
ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
......@@ -650,109 +523,15 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
return (consumed);
}
/************************ Host template entry points *************************/
static int ahc_linux_detect(Scsi_Host_Template *);
static int ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
static const char *ahc_linux_info(struct Scsi_Host *);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int ahc_linux_slave_alloc(Scsi_Device *);
static int ahc_linux_slave_configure(Scsi_Device *);
static void ahc_linux_slave_destroy(Scsi_Device *);
#if defined(__i386__)
static int ahc_linux_biosparam(struct scsi_device*,
struct block_device*,
sector_t, int[]);
#endif
#else
static int ahc_linux_release(struct Scsi_Host *);
static void ahc_linux_select_queue_depth(struct Scsi_Host *host,
Scsi_Device *scsi_devs);
#if defined(__i386__)
static int ahc_linux_biosparam(Disk *, kdev_t, int[]);
#endif
#endif
static int ahc_linux_bus_reset(Scsi_Cmnd *);
static int ahc_linux_dev_reset(Scsi_Cmnd *);
static int ahc_linux_abort(Scsi_Cmnd *);
/*
* Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg).
*
* In pre-2.5.X...
* The midlayer allocates an S/G array dynamically when a command is issued
* using SCSI malloc. This array, which is in an OS dependent format that
* must later be copied to our private S/G list, is sized to house just the
* number of segments needed for the current transfer. Since the code that
* sizes the SCSI malloc pool does not take into consideration fragmentation
* of the pool, executing transactions numbering just a fraction of our
* concurrent transaction limit with list lengths aproaching AHC_NSEG will
* quickly depleat the SCSI malloc pool of usable space. Unfortunately, the
* mid-layer does not properly handle this scsi malloc failures for the S/G
* array and the result can be a lockup of the I/O subsystem. We try to size
* our S/G list so that it satisfies our drivers allocation requirements in
* addition to avoiding fragmentation of the SCSI malloc pool.
*/
static void
ahc_linux_size_nseg(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
u_int cur_size;
u_int best_size;
/*
* The SCSI allocator rounds to the nearest 512 bytes
* an cannot allocate across a page boundary. Our algorithm
* is to start at 1K of scsi malloc space per-command and
* loop through all factors of the PAGE_SIZE and pick the best.
*/
best_size = 0;
for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) {
u_int nseg;
nseg = cur_size / sizeof(struct scatterlist);
if (nseg < AHC_LINUX_MIN_NSEG)
continue;
if (best_size == 0) {
best_size = cur_size;
ahc_linux_nseg = nseg;
} else {
u_int best_rem;
u_int cur_rem;
/*
* Compare the traits of the current "best_size"
* with the current size to determine if the
* current size is a better size.
*/
best_rem = best_size % sizeof(struct scatterlist);
cur_rem = cur_size % sizeof(struct scatterlist);
if (cur_rem < best_rem) {
best_size = cur_size;
ahc_linux_nseg = nseg;
}
}
}
#endif
}
/*
* Try to detect an Adaptec 7XXX controller.
*/
static int
ahc_linux_detect(Scsi_Host_Template *template)
ahc_linux_detect(struct scsi_host_template *template)
{
struct ahc_softc *ahc;
int found = 0;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* It is a bug that the upper layer takes
* this lock just prior to calling us.
*/
spin_unlock_irq(&io_request_lock);
#endif
/*
* Sanity checking of Linux SCSI data structures so
* that some of our hacks^H^H^H^H^Hassumptions aren't
......@@ -764,7 +543,6 @@ ahc_linux_detect(Scsi_Host_Template *template)
printf("ahc_linux_detect: Unable to attach\n");
return (0);
}
ahc_linux_size_nseg();
/*
* If we've been passed any parameters, process them now.
*/
......@@ -793,48 +571,11 @@ ahc_linux_detect(Scsi_Host_Template *template)
found++;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
spin_lock_irq(&io_request_lock);
#endif
aic7xxx_detect_complete++;
return (found);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* Free the passed in Scsi_Host memory structures prior to unloading the
* module.
*/
int
ahc_linux_release(struct Scsi_Host * host)
{
struct ahc_softc *ahc;
u_long l;
ahc_list_lock(&l);
if (host != NULL) {
/*
* We should be able to just perform
* the free directly, but check our
* list for extra sanity.
*/
ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata);
if (ahc != NULL) {
u_long s;
ahc_lock(ahc, &s);
ahc_intr_enable(ahc, FALSE);
ahc_unlock(ahc, &s);
ahc_free(ahc);
}
}
ahc_list_unlock(&l);
return (0);
}
#endif
/*
* Return a string describing the driver.
*/
......@@ -867,11 +608,10 @@ ahc_linux_info(struct Scsi_Host *host)
* Queue an SCB to the controller.
*/
static int
ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
u_long flags;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
......@@ -880,205 +620,149 @@ ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
*/
cmd->scsi_done = scsi_done;
ahc_midlayer_entrypoint_lock(ahc, &flags);
/*
* Close the race of a command that was in the process of
* being queued to us just as our simq was frozen. Let
* DV commands through so long as we are only frozen to
* perform DV.
*/
if (ahc->platform_data->qfrozen != 0) {
if (ahc->platform_data->qfrozen != 0)
return SCSI_MLQUEUE_HOST_BUSY;
ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
ahc_linux_queue_cmd_complete(ahc, cmd);
ahc_schedule_completeq(ahc);
ahc_midlayer_entrypoint_unlock(ahc, &flags);
return (0);
}
dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
cmd->device->lun, /*alloc*/TRUE);
if (dev == NULL) {
ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL);
ahc_linux_queue_cmd_complete(ahc, cmd);
ahc_schedule_completeq(ahc);
ahc_midlayer_entrypoint_unlock(ahc, &flags);
printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n",
ahc_name(ahc));
return (0);
}
cmd->device->lun);
BUG_ON(dev == NULL);
cmd->result = CAM_REQ_INPROG << 16;
TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe);
if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
dev->flags |= AHC_DEV_ON_RUN_LIST;
ahc_linux_run_device_queues(ahc);
}
ahc_midlayer_entrypoint_unlock(ahc, &flags);
return (0);
return ahc_linux_run_command(ahc, dev, cmd);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
ahc_linux_slave_alloc(Scsi_Device *device)
ahc_linux_slave_alloc(struct scsi_device *device)
{
struct ahc_softc *ahc;
struct ahc_linux_target *targ;
struct scsi_target *starget = device->sdev_target;
struct ahc_linux_device *dev;
unsigned int target_offset;
unsigned long flags;
int retval = -ENOMEM;
target_offset = starget->id;
if (starget->channel != 0)
target_offset += 8;
ahc = *((struct ahc_softc **)device->host->hostdata);
if (bootverbose)
printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
return (0);
ahc_lock(ahc, &flags);
targ = ahc->platform_data->targets[target_offset];
if (targ == NULL) {
targ = ahc_linux_alloc_target(ahc, starget->channel, starget->id);
struct seeprom_config *sc = ahc->seep_config;
if (targ == NULL)
goto out;
if (sc) {
unsigned short scsirate;
struct ahc_devinfo devinfo;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
char channel = starget->channel + 'A';
unsigned int our_id = ahc->our_id;
if (starget->channel)
our_id = ahc->our_id_b;
if ((ahc->features & AHC_ULTRA2) != 0) {
scsirate = sc->device_flags[target_offset] & CFXFER;
} else {
scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
if (sc->device_flags[target_offset] & CFSYNCH)
scsirate |= SOFS;
}
if (sc->device_flags[target_offset] & CFWIDEB) {
scsirate |= WIDEXFER;
spi_max_width(starget) = 1;
} else
spi_max_width(starget) = 0;
spi_min_period(starget) =
ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
targ->target, &tstate);
ahc_compile_devinfo(&devinfo, our_id, targ->target,
CAM_LUN_WILDCARD, channel,
ROLE_INITIATOR);
ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
AHC_TRANS_GOAL, /*paused*/FALSE);
ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
AHC_TRANS_GOAL, /*paused*/FALSE);
}
}
dev = targ->devices[device->lun];
if (dev == NULL) {
dev = ahc_linux_alloc_device(ahc, targ, device->lun);
if (dev == NULL)
goto out;
}
retval = 0;
out:
ahc_unlock(ahc, &flags);
return retval;
}
static int
ahc_linux_slave_configure(Scsi_Device *device)
ahc_linux_slave_configure(struct scsi_device *device)
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
u_long flags;
ahc = *((struct ahc_softc **)device->host->hostdata);
if (bootverbose)
printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
ahc_midlayer_entrypoint_lock(ahc, &flags);
/*
* Since Linux has attached to the device, configure
* it so we don't free and allocate the device
* structure on every command.
*/
dev = ahc_linux_get_device(ahc, device->channel,
device->id, device->lun,
/*alloc*/TRUE);
if (dev != NULL) {
dev->flags &= ~AHC_DEV_UNCONFIGURED;
dev->scsi_device = device;
ahc_linux_device_queue_depth(ahc, dev);
}
ahc_midlayer_entrypoint_unlock(ahc, &flags);
dev = ahc_linux_get_device(ahc, device->channel, device->id,
device->lun);
dev->scsi_device = device;
ahc_linux_device_queue_depth(ahc, dev);
/* Initial Domain Validation */
if (!spi_initial_dv(device->sdev_target))
spi_dv_device(device);
return (0);
return 0;
}
static void
ahc_linux_slave_destroy(Scsi_Device *device)
ahc_linux_slave_destroy(struct scsi_device *device)
{
struct ahc_softc *ahc;
struct ahc_linux_device *dev;
u_long flags;
ahc = *((struct ahc_softc **)device->host->hostdata);
if (bootverbose)
printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
ahc_midlayer_entrypoint_lock(ahc, &flags);
dev = ahc_linux_get_device(ahc, device->channel,
device->id, device->lun,
/*alloc*/FALSE);
/*
* Filter out "silly" deletions of real devices by only
* deleting devices that have had slave_configure()
* called on them. All other devices that have not
* been configured will automatically be deleted by
* the refcounting process.
*/
if (dev != NULL
&& (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
dev->flags |= AHC_DEV_UNCONFIGURED;
if (TAILQ_EMPTY(&dev->busyq)
&& dev->active == 0
&& (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
ahc_linux_free_device(ahc, dev);
}
ahc_midlayer_entrypoint_unlock(ahc, &flags);
}
#else
/*
* Sets the queue depth for each SCSI device hanging
* off the input host adapter.
*/
static void
ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
{
Scsi_Device *device;
Scsi_Device *ldev;
struct ahc_softc *ahc;
u_long flags;
device->id, device->lun);
ahc = *((struct ahc_softc **)host->hostdata);
ahc_lock(ahc, &flags);
for (device = scsi_devs; device != NULL; device = device->next) {
BUG_ON(dev->active);
/*
* Watch out for duplicate devices. This works around
* some quirks in how the SCSI scanning code does its
* device management.
*/
for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
if (ldev->host == device->host
&& ldev->channel == device->channel
&& ldev->id == device->id
&& ldev->lun == device->lun)
break;
}
/* Skip duplicate. */
if (ldev != device)
continue;
if (device->host == host) {
struct ahc_linux_device *dev;
/*
* Since Linux has attached to the device, configure
* it so we don't free and allocate the device
* structure on every command.
*/
dev = ahc_linux_get_device(ahc, device->channel,
device->id, device->lun,
/*alloc*/TRUE);
if (dev != NULL) {
dev->flags &= ~AHC_DEV_UNCONFIGURED;
dev->scsi_device = device;
ahc_linux_device_queue_depth(ahc, dev);
device->queue_depth = dev->openings
+ dev->active;
if ((dev->flags & (AHC_DEV_Q_BASIC
| AHC_DEV_Q_TAGGED)) == 0) {
/*
* We allow the OS to queue 2 untagged
* transactions to us at any time even
* though we can only execute them
* serially on the controller/device.
* This should remove some latency.
*/
device->queue_depth = 2;
}
}
}
}
ahc_unlock(ahc, &flags);
ahc_linux_free_device(ahc, dev);
}
#endif
#if defined(__i386__)
/*
* Return the disk geometry for the given SCSI device.
*/
static int
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
uint8_t *bh;
#else
ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
{
struct scsi_device *sdev = disk->device;
u_long capacity = disk->capacity;
struct buffer_head *bh;
#endif
int heads;
int sectors;
int cylinders;
......@@ -1090,22 +774,11 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
ahc = *((struct ahc_softc **)sdev->host->hostdata);
channel = sdev->channel;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
bh = scsi_bios_ptable(bdev);
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
#else
bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
#endif
if (bh) {
ret = scsi_partsize(bh, capacity,
&geom[2], &geom[0], &geom[1]);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
kfree(bh);
#else
brelse(bh);
#endif
if (ret != -1)
return (ret);
}
......@@ -1135,7 +808,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
* Abort the current SCSI command(s).
*/
static int
ahc_linux_abort(Scsi_Cmnd *cmd)
ahc_linux_abort(struct scsi_cmnd *cmd)
{
int error;
......@@ -1149,7 +822,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd)
* Attempt to send a target reset message to the device that timed out.
*/
static int
ahc_linux_dev_reset(Scsi_Cmnd *cmd)
ahc_linux_dev_reset(struct scsi_cmnd *cmd)
{
int error;
......@@ -1163,18 +836,14 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd)
* Reset the SCSI bus.
*/
static int
ahc_linux_bus_reset(Scsi_Cmnd *cmd)
ahc_linux_bus_reset(struct scsi_cmnd *cmd)
{
struct ahc_softc *ahc;
u_long s;
int found;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
ahc_midlayer_entrypoint_lock(ahc, &s);
found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
/*initiate reset*/TRUE);
ahc_linux_run_complete_queue(ahc);
ahc_midlayer_entrypoint_unlock(ahc, &s);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "
......@@ -1183,7 +852,7 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd)
return SUCCESS;
}
Scsi_Host_Template aic7xxx_driver_template = {
struct scsi_host_template aic7xxx_driver_template = {
.module = THIS_MODULE,
.name = "aic7xxx",
.proc_info = ahc_linux_proc_info,
......@@ -1206,33 +875,6 @@ Scsi_Host_Template aic7xxx_driver_template = {
/**************************** Tasklet Handler *********************************/
/*
* In 2.4.X and above, this routine is called from a tasklet,
* so we must re-acquire our lock prior to executing this code.
* In all prior kernels, ahc_schedule_runq() calls this routine
* directly and ahc_schedule_runq() is called with our lock held.
*/
static void
ahc_runq_tasklet(unsigned long data)
{
struct ahc_softc* ahc;
struct ahc_linux_device *dev;
u_long flags;
ahc = (struct ahc_softc *)data;
ahc_lock(ahc, &flags);
while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
dev->flags &= ~AHC_DEV_ON_RUN_LIST;
ahc_linux_check_device_queue(ahc, dev);
/* Yeild to our interrupt handler */
ahc_unlock(ahc, &flags);
ahc_lock(ahc, &flags);
}
ahc_unlock(ahc, &flags);
}
/******************************** Macros **************************************/
#define BUILD_SCSIID(ahc, cmd) \
((((cmd)->device->id << TID_SHIFT) & TID) \
......@@ -1278,37 +920,11 @@ int
ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
int flags, bus_dmamap_t *mapp)
{
bus_dmamap_t map;
map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
if (map == NULL)
return (ENOMEM);
/*
* Although we can dma data above 4GB, our
* "consistent" memory is below 4GB for
* space efficiency reasons (only need a 4byte
* address). For this reason, we have to reset
* our dma mask when doing allocations.
*/
if (ahc->dev_softc != NULL)
if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
kfree(map);
return (ENODEV);
}
*vaddr = pci_alloc_consistent(ahc->dev_softc,
dmat->maxsize, &map->bus_addr);
if (ahc->dev_softc != NULL)
if (pci_set_dma_mask(ahc->dev_softc,
ahc->platform_data->hw_dma_mask)) {
printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
kfree(map);
return (ENODEV);
}
dmat->maxsize, mapp);
if (*vaddr == NULL)
return (ENOMEM);
*mapp = map;
return(0);
return ENOMEM;
return 0;
}
void
......@@ -1316,7 +932,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
void* vaddr, bus_dmamap_t map)
{
pci_free_consistent(ahc->dev_softc, dmat->maxsize,
vaddr, map->bus_addr);
vaddr, map);
}
int
......@@ -1330,7 +946,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
*/
bus_dma_segment_t stack_sg;
stack_sg.ds_addr = map->bus_addr;
stack_sg.ds_addr = map;
stack_sg.ds_len = dmat->maxsize;
cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
return (0);
......@@ -1339,12 +955,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
void
ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
{
/*
* The map may is NULL in our < 2.3.X implementation.
* Now it's 2.6.5, but just in case...
*/
BUG_ON(map == NULL);
free(map, M_DEVBUF);
}
int
......@@ -1550,7 +1160,7 @@ __setup("aic7xxx=", aic7xxx_setup);
uint32_t aic7xxx_verbose;
int
ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
{
char buf[80];
struct Scsi_Host *host;
......@@ -1564,11 +1174,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
*((struct ahc_softc **)host->hostdata) = ahc;
ahc_lock(ahc, &s);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_assign_lock(host, &ahc->platform_data->spin_lock);
#elif AHC_SCSI_HAS_HOST_LOCK != 0
host->lock = &ahc->platform_data->spin_lock;
#endif
ahc->platform_data->host = host;
host->can_queue = AHC_MAX_QUEUE;
host->cmd_per_lun = 2;
......@@ -1587,19 +1193,14 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
ahc_set_name(ahc, new_name);
}
host->unique_id = ahc->unit;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
scsi_set_pci_device(host, ahc->dev_softc);
#endif
ahc_linux_initialize_scsi_bus(ahc);
ahc_intr_enable(ahc, TRUE);
ahc_unlock(ahc, &s);
host->transportt = ahc_linux_transport_template;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */
scsi_scan_host(host);
#endif
return (0);
}
......@@ -1717,19 +1318,9 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
if (ahc->platform_data == NULL)
return (ENOMEM);
memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
TAILQ_INIT(&ahc->platform_data->completeq);
TAILQ_INIT(&ahc->platform_data->device_runq);
ahc->platform_data->irq = AHC_LINUX_NOIRQ;
ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
ahc_lockinit(ahc);
ahc_done_lockinit(ahc);
init_timer(&ahc->platform_data->completeq_timer);
ahc->platform_data->completeq_timer.data = (u_long)ahc;
ahc->platform_data->completeq_timer.function =
(ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
(unsigned long)ahc);
ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
if (aic7xxx_pci_parity == 0)
......@@ -1746,12 +1337,8 @@ ahc_platform_free(struct ahc_softc *ahc)
int i, j;
if (ahc->platform_data != NULL) {
del_timer_sync(&ahc->platform_data->completeq_timer);
tasklet_kill(&ahc->platform_data->runq_tasklet);
if (ahc->platform_data->host != NULL) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_remove_host(ahc->platform_data->host);
#endif
scsi_host_put(ahc->platform_data->host);
}
......@@ -1787,16 +1374,7 @@ ahc_platform_free(struct ahc_softc *ahc)
release_mem_region(ahc->platform_data->mem_busaddr,
0x1000);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* In 2.4 we detach from the scsi midlayer before the PCI
* layer invokes our remove callback. No per-instance
* detach is provided, so we must reach inside the PCI
* subsystem's internals and detach our driver manually.
*/
if (ahc->dev_softc != NULL)
ahc->dev_softc->driver = NULL;
#endif
free(ahc->platform_data, M_DEVBUF);
}
}
......@@ -1820,7 +1398,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
dev = ahc_linux_get_device(ahc, devinfo->channel - 'A',
devinfo->target,
devinfo->lun, /*alloc*/FALSE);
devinfo->lun);
if (dev == NULL)
return;
was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
......@@ -1873,7 +1451,6 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
dev->maxtags = 0;
dev->openings = 1 - dev->active;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
if (dev->scsi_device != NULL) {
switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
case AHC_DEV_Q_BASIC:
......@@ -1899,90 +1476,13 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
break;
}
}
#endif
}
int
ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
int lun, u_int tag, role_t role, uint32_t status)
{
int chan;
int maxchan;
int targ;
int maxtarg;
int clun;
int maxlun;
int count;
if (tag != SCB_LIST_NULL)
return (0);
chan = 0;
if (channel != ALL_CHANNELS) {
chan = channel - 'A';
maxchan = chan + 1;
} else {
maxchan = (ahc->features & AHC_TWIN) ? 2 : 1;
}
targ = 0;
if (target != CAM_TARGET_WILDCARD) {
targ = target;
maxtarg = targ + 1;
} else {
maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
}
clun = 0;
if (lun != CAM_LUN_WILDCARD) {
clun = lun;
maxlun = clun + 1;
} else {
maxlun = AHC_NUM_LUNS;
}
count = 0;
for (; chan < maxchan; chan++) {
for (; targ < maxtarg; targ++) {
for (; clun < maxlun; clun++) {
struct ahc_linux_device *dev;
struct ahc_busyq *busyq;
struct ahc_cmd *acmd;
dev = ahc_linux_get_device(ahc, chan,
targ, clun,
/*alloc*/FALSE);
if (dev == NULL)
continue;
busyq = &dev->busyq;
while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
Scsi_Cmnd *cmd;
cmd = &acmd_scsi_cmd(acmd);
TAILQ_REMOVE(busyq, acmd,
acmd_links.tqe);
count++;
cmd->result = status << 16;
ahc_linux_queue_cmd_complete(ahc, cmd);
}
}
}
}
return (count);
}
static void
ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
{
u_long flags;
ahc_lock(ahc, &flags);
del_timer(&ahc->platform_data->completeq_timer);
ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
ahc_linux_run_complete_queue(ahc);
ahc_unlock(ahc, &flags);
return 0;
}
static u_int
......@@ -2045,213 +1545,200 @@ ahc_linux_device_queue_depth(struct ahc_softc *ahc,
}
}
static void
ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev)
static int
ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
struct scsi_cmnd *cmd)
{
struct ahc_cmd *acmd;
struct scsi_cmnd *cmd;
struct scb *scb;
struct hardware_scb *hscb;
struct ahc_initiator_tinfo *tinfo;
struct ahc_tmode_tstate *tstate;
uint16_t mask;
struct scb_tailq *untagged_q = NULL;
if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0)
panic("running device on run list");
/*
* Schedule us to run later. The only reason we are not
* running is because the whole controller Q is frozen.
*/
if (ahc->platform_data->qfrozen != 0)
return SCSI_MLQUEUE_HOST_BUSY;
while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
&& dev->openings > 0 && dev->qfrozen == 0) {
/*
* We only allow one untagged transaction
* per target in the initiator role unless
* we are storing a full busy target *lun*
* table in SCB space.
*/
if (!blk_rq_tagged(cmd->request)
&& (ahc->features & AHC_SCB_BTT) == 0) {
int target_offset;
/*
* Schedule us to run later. The only reason we are not
* running is because the whole controller Q is frozen.
*/
if (ahc->platform_data->qfrozen != 0) {
TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
dev, links);
dev->flags |= AHC_DEV_ON_RUN_LIST;
return;
}
/*
* Get an scb to use.
*/
if ((scb = ahc_get_scb(ahc)) == NULL) {
TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
dev, links);
dev->flags |= AHC_DEV_ON_RUN_LIST;
ahc->flags |= AHC_RESOURCE_SHORTAGE;
return;
}
TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
cmd = &acmd_scsi_cmd(acmd);
scb->io_ctx = cmd;
scb->platform_data->dev = dev;
hscb = scb->hscb;
cmd->host_scribble = (char *)scb;
target_offset = cmd->device->id + cmd->device->channel * 8;
untagged_q = &(ahc->untagged_queues[target_offset]);
if (!TAILQ_EMPTY(untagged_q))
/* if we're already executing an untagged command
* we're busy to another */
return SCSI_MLQUEUE_DEVICE_BUSY;
}
/*
* Fill out basics of the HSCB.
*/
hscb->control = 0;
hscb->scsiid = BUILD_SCSIID(ahc, cmd);
hscb->lun = cmd->device->lun;
mask = SCB_GET_TARGET_MASK(ahc, scb);
tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
SCB_GET_OUR_ID(scb),
SCB_GET_TARGET(ahc, scb), &tstate);
hscb->scsirate = tinfo->scsirate;
hscb->scsioffset = tinfo->curr.offset;
if ((tstate->ultraenb & mask) != 0)
hscb->control |= ULTRAENB;
if ((ahc->user_discenable & mask) != 0)
hscb->control |= DISCENB;
if ((tstate->auto_negotiate & mask) != 0) {
scb->flags |= SCB_AUTO_NEGOTIATE;
scb->hscb->control |= MK_MESSAGE;
}
/*
* Get an scb to use.
*/
if ((scb = ahc_get_scb(ahc)) == NULL) {
ahc->flags |= AHC_RESOURCE_SHORTAGE;
return SCSI_MLQUEUE_HOST_BUSY;
}
if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
int msg_bytes;
uint8_t tag_msgs[2];
scb->io_ctx = cmd;
scb->platform_data->dev = dev;
hscb = scb->hscb;
cmd->host_scribble = (char *)scb;
msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
hscb->control |= tag_msgs[0];
if (tag_msgs[0] == MSG_ORDERED_TASK)
dev->commands_since_idle_or_otag = 0;
} else
#endif
if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
&& (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
hscb->control |= MSG_ORDERED_TASK;
/*
* Fill out basics of the HSCB.
*/
hscb->control = 0;
hscb->scsiid = BUILD_SCSIID(ahc, cmd);
hscb->lun = cmd->device->lun;
mask = SCB_GET_TARGET_MASK(ahc, scb);
tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
SCB_GET_OUR_ID(scb),
SCB_GET_TARGET(ahc, scb), &tstate);
hscb->scsirate = tinfo->scsirate;
hscb->scsioffset = tinfo->curr.offset;
if ((tstate->ultraenb & mask) != 0)
hscb->control |= ULTRAENB;
if ((ahc->user_discenable & mask) != 0)
hscb->control |= DISCENB;
if ((tstate->auto_negotiate & mask) != 0) {
scb->flags |= SCB_AUTO_NEGOTIATE;
scb->hscb->control |= MK_MESSAGE;
}
if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
int msg_bytes;
uint8_t tag_msgs[2];
msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
hscb->control |= tag_msgs[0];
if (tag_msgs[0] == MSG_ORDERED_TASK)
dev->commands_since_idle_or_otag = 0;
} else {
hscb->control |= MSG_SIMPLE_TASK;
}
}
hscb->cdb_len = cmd->cmd_len;
if (hscb->cdb_len <= 12) {
memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
} else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
&& (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
hscb->control |= MSG_ORDERED_TASK;
dev->commands_since_idle_or_otag = 0;
} else {
memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
scb->flags |= SCB_CDB32_PTR;
hscb->control |= MSG_SIMPLE_TASK;
}
}
scb->platform_data->xfer_len = 0;
ahc_set_residual(scb, 0);
ahc_set_sense_residual(scb, 0);
scb->sg_count = 0;
if (cmd->use_sg != 0) {
struct ahc_dma_seg *sg;
struct scatterlist *cur_seg;
struct scatterlist *end_seg;
int nseg;
cur_seg = (struct scatterlist *)cmd->request_buffer;
nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
cmd->sc_data_direction);
end_seg = cur_seg + nseg;
/* Copy the segments into the SG list. */
sg = scb->sg_list;
/*
* The sg_count may be larger than nseg if
* a transfer crosses a 32bit page.
*/
while (cur_seg < end_seg) {
dma_addr_t addr;
bus_size_t len;
int consumed;
addr = sg_dma_address(cur_seg);
len = sg_dma_len(cur_seg);
consumed = ahc_linux_map_seg(ahc, scb,
sg, addr, len);
sg += consumed;
scb->sg_count += consumed;
cur_seg++;
}
sg--;
sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
/*
* Reset the sg list pointer.
*/
scb->hscb->sgptr =
ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
hscb->cdb_len = cmd->cmd_len;
if (hscb->cdb_len <= 12) {
memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
} else {
memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
scb->flags |= SCB_CDB32_PTR;
}
/*
* Copy the first SG into the "current"
* data pointer area.
*/
scb->hscb->dataptr = scb->sg_list->addr;
scb->hscb->datacnt = scb->sg_list->len;
} else if (cmd->request_bufflen != 0) {
struct ahc_dma_seg *sg;
scb->platform_data->xfer_len = 0;
ahc_set_residual(scb, 0);
ahc_set_sense_residual(scb, 0);
scb->sg_count = 0;
if (cmd->use_sg != 0) {
struct ahc_dma_seg *sg;
struct scatterlist *cur_seg;
struct scatterlist *end_seg;
int nseg;
cur_seg = (struct scatterlist *)cmd->request_buffer;
nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
cmd->sc_data_direction);
end_seg = cur_seg + nseg;
/* Copy the segments into the SG list. */
sg = scb->sg_list;
/*
* The sg_count may be larger than nseg if
* a transfer crosses a 32bit page.
*/
while (cur_seg < end_seg) {
dma_addr_t addr;
sg = scb->sg_list;
addr = pci_map_single(ahc->dev_softc,
cmd->request_buffer,
cmd->request_bufflen,
cmd->sc_data_direction);
scb->platform_data->buf_busaddr = addr;
scb->sg_count = ahc_linux_map_seg(ahc, scb,
sg, addr,
cmd->request_bufflen);
sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
/*
* Reset the sg list pointer.
*/
scb->hscb->sgptr =
ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
/*
* Copy the first SG into the "current"
* data pointer area.
*/
scb->hscb->dataptr = sg->addr;
scb->hscb->datacnt = sg->len;
} else {
scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
scb->hscb->dataptr = 0;
scb->hscb->datacnt = 0;
scb->sg_count = 0;
bus_size_t len;
int consumed;
addr = sg_dma_address(cur_seg);
len = sg_dma_len(cur_seg);
consumed = ahc_linux_map_seg(ahc, scb,
sg, addr, len);
sg += consumed;
scb->sg_count += consumed;
cur_seg++;
}
sg--;
sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE);
LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
dev->openings--;
dev->active++;
dev->commands_issued++;
if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
dev->commands_since_idle_or_otag++;
/*
* Reset the sg list pointer.
*/
scb->hscb->sgptr =
ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
/*
* Copy the first SG into the "current"
* data pointer area.
*/
scb->hscb->dataptr = scb->sg_list->addr;
scb->hscb->datacnt = scb->sg_list->len;
} else if (cmd->request_bufflen != 0) {
struct ahc_dma_seg *sg;
dma_addr_t addr;
sg = scb->sg_list;
addr = pci_map_single(ahc->dev_softc,
cmd->request_buffer,
cmd->request_bufflen,
cmd->sc_data_direction);
scb->platform_data->buf_busaddr = addr;
scb->sg_count = ahc_linux_map_seg(ahc, scb,
sg, addr,
cmd->request_bufflen);
sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
/*
* We only allow one untagged transaction
* per target in the initiator role unless
* we are storing a full busy target *lun*
* table in SCB space.
* Reset the sg list pointer.
*/
if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
&& (ahc->features & AHC_SCB_BTT) == 0) {
struct scb_tailq *untagged_q;
int target_offset;
target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
untagged_q = &(ahc->untagged_queues[target_offset]);
TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
scb->flags |= SCB_UNTAGGEDQ;
if (TAILQ_FIRST(untagged_q) != scb)
continue;
}
scb->flags |= SCB_ACTIVE;
ahc_queue_scb(ahc, scb);
scb->hscb->sgptr =
ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
/*
* Copy the first SG into the "current"
* data pointer area.
*/
scb->hscb->dataptr = sg->addr;
scb->hscb->datacnt = sg->len;
} else {
scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
scb->hscb->dataptr = 0;
scb->hscb->datacnt = 0;
scb->sg_count = 0;
}
LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
dev->openings--;
dev->active++;
dev->commands_issued++;
if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
dev->commands_since_idle_or_otag++;
scb->flags |= SCB_ACTIVE;
if (untagged_q) {
TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
scb->flags |= SCB_UNTAGGEDQ;
}
ahc_queue_scb(ahc, scb);
return 0;
}
/*
......@@ -2267,9 +1754,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
ahc = (struct ahc_softc *) dev_id;
ahc_lock(ahc, &flags);
ours = ahc_intr(ahc);
if (ahc_linux_next_device_to_run(ahc) != NULL)
ahc_schedule_runq(ahc);
ahc_linux_run_complete_queue(ahc);
ahc_unlock(ahc, &flags);
return IRQ_RETVAL(ours);
}
......@@ -2278,8 +1762,6 @@ void
ahc_platform_flushwork(struct ahc_softc *ahc)
{
while (ahc_linux_run_complete_queue(ahc) != NULL)
;
}
static struct ahc_linux_target*
......@@ -2348,9 +1830,6 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
if (dev == NULL)
return (NULL);
memset(dev, 0, sizeof(*dev));
init_timer(&dev->timer);
TAILQ_INIT(&dev->busyq);
dev->flags = AHC_DEV_UNCONFIGURED;
dev->lun = lun;
dev->target = targ;
......@@ -2373,7 +1852,7 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
}
static void
__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
{
struct ahc_linux_target *targ;
......@@ -2385,13 +1864,6 @@ __ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
ahc_linux_free_target(ahc, targ);
}
static void
ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
{
del_timer_sync(&dev->timer);
__ahc_linux_free_device(ahc, dev);
}
void
ahc_send_async(struct ahc_softc *ahc, char channel,
u_int target, u_int lun, ac_code code, void *arg)
......@@ -2463,28 +1935,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
}
case AC_SENT_BDR:
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
WARN_ON(lun != CAM_LUN_WILDCARD);
scsi_report_device_reset(ahc->platform_data->host,
channel - 'A', target);
#else
Scsi_Device *scsi_dev;
/*
* Find the SCSI device associated with this
* request and indicate that a UA is expected.
*/
for (scsi_dev = ahc->platform_data->host->host_queue;
scsi_dev != NULL; scsi_dev = scsi_dev->next) {
if (channel - 'A' == scsi_dev->channel
&& target == scsi_dev->id
&& (lun == CAM_LUN_WILDCARD
|| lun == scsi_dev->lun)) {
scsi_dev->was_reset = 1;
scsi_dev->expecting_cc_ua = 1;
}
}
#endif
break;
}
case AC_BUS_RESET:
......@@ -2504,7 +1957,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
void
ahc_done(struct ahc_softc *ahc, struct scb *scb)
{
Scsi_Cmnd *cmd;
struct scsi_cmnd *cmd;
struct ahc_linux_device *dev;
LIST_REMOVE(scb, pending_links);
......@@ -2515,7 +1968,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
untagged_q = &(ahc->untagged_queues[target_offset]);
TAILQ_REMOVE(untagged_q, scb, links.tqe);
ahc_run_untagged_queue(ahc, untagged_q);
BUG_ON(!TAILQ_EMPTY(untagged_q));
}
if ((scb->flags & SCB_ACTIVE) == 0) {
......@@ -2583,8 +2036,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
}
} else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
ahc_linux_handle_scsi_status(ahc, dev, scb);
} else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
dev->flags |= AHC_DEV_UNCONFIGURED;
}
if (dev->openings == 1
......@@ -2606,16 +2057,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
if (dev->active == 0)
dev->commands_since_idle_or_otag = 0;
if (TAILQ_EMPTY(&dev->busyq)) {
if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0
&& dev->active == 0
&& (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
ahc_linux_free_device(ahc, dev);
} else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
dev->flags |= AHC_DEV_ON_RUN_LIST;
}
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
printf("Recovery SCB completes\n");
if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
......@@ -2659,7 +2100,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
case SCSI_STATUS_CHECK_COND:
case SCSI_STATUS_CMD_TERMINATED:
{
Scsi_Cmnd *cmd;
struct scsi_cmnd *cmd;
/*
* Copy sense information to the OS's cmd
......@@ -2754,51 +2195,14 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
ahc_platform_set_tags(ahc, &devinfo,
(dev->flags & AHC_DEV_Q_BASIC)
? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
/* FALLTHROUGH */
}
case SCSI_STATUS_BUSY:
{
/*
* Set a short timer to defer sending commands for
* a bit since Linux will not delay in this case.
*/
if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) {
printf("%s:%c:%d: Device Timer still active during "
"busy processing\n", ahc_name(ahc),
dev->target->channel, dev->target->target);
break;
}
dev->flags |= AHC_DEV_TIMER_ACTIVE;
dev->qfrozen++;
init_timer(&dev->timer);
dev->timer.data = (u_long)dev;
dev->timer.expires = jiffies + (HZ/2);
dev->timer.function = ahc_linux_dev_timed_unfreeze;
add_timer(&dev->timer);
break;
}
}
}
static void
ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
{
/*
* Typically, the complete queue has very few entries
* queued to it before the queue is emptied by
* ahc_linux_run_complete_queue, so sorting the entries
* by generation number should be inexpensive.
* We perform the sort so that commands that complete
* with an error are retuned in the order origionally
* queued to the controller so that any subsequent retries
* are performed in order. The underlying ahc routines do
* not guarantee the order that aborted commands will be
* returned to us.
*/
struct ahc_completeq *completeq;
struct ahc_cmd *list_cmd;
struct ahc_cmd *acmd;
/*
* Map CAM error codes into Linux Error codes. We
* avoid the conversion so that the DV code has the
......@@ -2852,26 +2256,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
new_status = DID_ERROR;
break;
case CAM_REQUEUE_REQ:
/*
* If we want the request requeued, make sure there
* are sufficent retries. In the old scsi error code,
* we used to be able to specify a result code that
* bypassed the retry count. Now we must use this
* hack. We also "fake" a check condition with
* a sense code of ABORTED COMMAND. This seems to
* evoke a retry even if this command is being sent
* via the eh thread. Ick! Ick! Ick!
*/
if (cmd->retries > 0)
cmd->retries--;
new_status = DID_OK;
ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
cmd->result |= (DRIVER_SENSE << 24);
memset(cmd->sense_buffer, 0,
sizeof(cmd->sense_buffer));
cmd->sense_buffer[0] = SSD_ERRCODE_VALID
| SSD_CURRENT_ERROR;
cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
new_status = DID_REQUEUE;
break;
default:
/* We should never get here */
......@@ -2882,17 +2267,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
ahc_cmd_set_transaction_status(cmd, new_status);
}
completeq = &ahc->platform_data->completeq;
list_cmd = TAILQ_FIRST(completeq);
acmd = (struct ahc_cmd *)cmd;
while (list_cmd != NULL
&& acmd_scsi_cmd(list_cmd).serial_number
< acmd_scsi_cmd(acmd).serial_number)
list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
if (list_cmd != NULL)
TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
else
TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
cmd->scsi_done(cmd);
}
static void
......@@ -2940,7 +2315,6 @@ ahc_linux_release_simq(u_long arg)
ahc->platform_data->qfrozen--;
if (ahc->platform_data->qfrozen == 0)
unblock_reqs = 1;
ahc_schedule_runq(ahc);
ahc_unlock(ahc, &s);
/*
* There is still a race here. The mid-layer
......@@ -2952,37 +2326,12 @@ ahc_linux_release_simq(u_long arg)
scsi_unblock_requests(ahc->platform_data->host);
}
static void
ahc_linux_dev_timed_unfreeze(u_long arg)
{
struct ahc_linux_device *dev;
struct ahc_softc *ahc;
u_long s;
dev = (struct ahc_linux_device *)arg;
ahc = dev->target->ahc;
ahc_lock(ahc, &s);
dev->flags &= ~AHC_DEV_TIMER_ACTIVE;
if (dev->qfrozen > 0)
dev->qfrozen--;
if (dev->qfrozen == 0
&& (dev->flags & AHC_DEV_ON_RUN_LIST) == 0)
ahc_linux_run_device_queue(ahc, dev);
if (TAILQ_EMPTY(&dev->busyq)
&& dev->active == 0)
__ahc_linux_free_device(ahc, dev);
ahc_unlock(ahc, &s);
}
static int
ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
{
struct ahc_softc *ahc;
struct ahc_cmd *acmd;
struct ahc_cmd *list_acmd;
struct ahc_linux_device *dev;
struct scb *pending_scb;
u_long s;
u_int saved_scbptr;
u_int active_scb_index;
u_int last_phase;
......@@ -2998,7 +2347,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
paused = FALSE;
wait = FALSE;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
acmd = (struct ahc_cmd *)cmd;
printf("%s:%d:%d:%d: Attempting to queue a%s message\n",
ahc_name(ahc), cmd->device->channel,
......@@ -3010,22 +2358,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
printf(" 0x%x", cmd->cmnd[cdb_byte]);
printf("\n");
/*
* In all versions of Linux, we have to work around
* a major flaw in how the mid-layer is locked down
* if we are to sleep successfully in our error handler
* while allowing our interrupt handler to run. Since
* the midlayer acquires either the io_request_lock or
* our lock prior to calling us, we must use the
* spin_unlock_irq() method for unlocking our lock.
* This will force interrupts to be enabled on the
* current CPU. Since the EH thread should not have
* been running with CPU interrupts disabled other than
* by acquiring either the io_request_lock or our own
* lock, this *should* be safe.
*/
ahc_midlayer_entrypoint_lock(ahc, &s);
/*
* First determine if we currently own this command.
* Start by searching the device queue. If not found
......@@ -3034,7 +2366,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
* command, return success.
*/
dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
cmd->device->lun, /*alloc*/FALSE);
cmd->device->lun);
if (dev == NULL) {
/*
......@@ -3048,24 +2380,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
goto no_cmd;
}
TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
if (list_acmd == acmd)
break;
}
if (list_acmd != NULL) {
printf("%s:%d:%d:%d: Command found on device queue\n",
ahc_name(ahc), cmd->device->channel, cmd->device->id,
cmd->device->lun);
if (flag == SCB_ABORT) {
TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
cmd->result = DID_ABORT << 16;
ahc_linux_queue_cmd_complete(ahc, cmd);
retval = SUCCESS;
goto done;
}
}
if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
&& ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
cmd->device->channel + 'A',
......@@ -3299,53 +2613,42 @@ done:
}
spin_lock_irq(&ahc->platform_data->spin_lock);
}
ahc_schedule_runq(ahc);
ahc_linux_run_complete_queue(ahc);
ahc_midlayer_entrypoint_unlock(ahc, &s);
return (retval);
}
void
ahc_platform_dump_card_state(struct ahc_softc *ahc)
{
struct ahc_linux_device *dev;
int channel;
int maxchannel;
int target;
int maxtarget;
int lun;
int i;
maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0;
maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7;
for (channel = 0; channel <= maxchannel; channel++) {
}
for (target = 0; target <=maxtarget; target++) {
static void ahc_linux_exit(void);
for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
struct ahc_cmd *acmd;
static void ahc_linux_get_width(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
struct ahc_tmode_tstate *tstate;
struct ahc_initiator_tinfo *tinfo
= ahc_fetch_transinfo(ahc,
starget->channel + 'A',
shost->this_id, starget->id, &tstate);
spi_width(starget) = tinfo->curr.width;
}
dev = ahc_linux_get_device(ahc, channel, target,
lun, /*alloc*/FALSE);
if (dev == NULL)
continue;
static void ahc_linux_set_width(struct scsi_target *starget, int width)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
struct ahc_devinfo devinfo;
unsigned long flags;
printf("DevQ(%d:%d:%d): ",
channel, target, lun);
i = 0;
TAILQ_FOREACH(acmd, &dev->busyq,
acmd_links.tqe) {
if (i++ > AHC_SCB_MAX)
break;
}
printf("%d waiting\n", i);
}
}
}
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
ahc_lock(ahc, &flags);
ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
ahc_unlock(ahc, &flags);
}
static void ahc_linux_exit(void);
static void ahc_linux_get_period(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
......@@ -3376,8 +2679,21 @@ static void ahc_linux_set_period(struct scsi_target *starget, int period)
if (offset == 0)
offset = MAX_OFFSET;
if (period < 9)
period = 9; /* 12.5ns is our minimum */
if (period == 9)
ppr_options |= MSG_EXT_PPR_DT_REQ;
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
/* all PPR requests apart from QAS require wide transfers */
if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
ahc_linux_get_width(starget);
if (spi_width(starget) == 0)
ppr_options &= MSG_EXT_PPR_QAS_REQ;
}
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
......@@ -3425,32 +2741,6 @@ static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
ahc_unlock(ahc, &flags);
}
static void ahc_linux_get_width(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
struct ahc_tmode_tstate *tstate;
struct ahc_initiator_tinfo *tinfo
= ahc_fetch_transinfo(ahc,
starget->channel + 'A',
shost->this_id, starget->id, &tstate);
spi_width(starget) = tinfo->curr.width;
}
static void ahc_linux_set_width(struct scsi_target *starget, int width)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
struct ahc_devinfo devinfo;
unsigned long flags;
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
ahc_lock(ahc, &flags);
ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
ahc_unlock(ahc, &flags);
}
static void ahc_linux_get_dt(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
......@@ -3479,10 +2769,15 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
unsigned long flags;
struct ahc_syncrate *syncrate;
if (dt) {
period = 9; /* 12.5ns is the only period valid for DT */
ppr_options |= MSG_EXT_PPR_DT_REQ;
} else if (period == 9)
period = 10; /* if resetting DT, period must be >= 25ns */
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
......@@ -3514,7 +2809,6 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
unsigned int ppr_options = tinfo->curr.ppr_options
& ~MSG_EXT_PPR_QAS_REQ;
unsigned int period = tinfo->curr.period;
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
unsigned long flags;
struct ahc_syncrate *syncrate;
......@@ -3523,8 +2817,7 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
......@@ -3556,7 +2849,6 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
unsigned int ppr_options = tinfo->curr.ppr_options
& ~MSG_EXT_PPR_IU_REQ;
unsigned int period = tinfo->curr.period;
unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
unsigned long flags;
struct ahc_syncrate *syncrate;
......@@ -3565,8 +2857,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
starget->channel + 'A', ROLE_INITIATOR);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,
dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
ahc_lock(ahc, &flags);
ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
ppr_options, AHC_TRANS_GOAL, FALSE);
......@@ -3599,7 +2890,6 @@ static struct spi_function_template ahc_linux_transport_functions = {
static int __init
ahc_linux_init(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions);
if (!ahc_linux_transport_template)
return -ENODEV;
......@@ -3608,29 +2898,11 @@ ahc_linux_init(void)
spi_release_transport(ahc_linux_transport_template);
ahc_linux_exit();
return -ENODEV;
#else
scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
if (aic7xxx_driver_template.present == 0) {
scsi_unregister_module(MODULE_SCSI_HA,
&aic7xxx_driver_template);
return (-ENODEV);
}
return (0);
#endif
}
static void
ahc_linux_exit(void)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* In 2.4 we have to unregister from the PCI core _after_
* unregistering from the scsi midlayer to avoid dangling
* references.
*/
scsi_unregister_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
#endif
ahc_linux_pci_exit();
ahc_linux_eisa_exit();
spi_release_transport(ahc_linux_transport_template);
......
drivers/scsi/aic7xxx/aic7xxx_osm.h
View file @ 9636273d
......@@ -59,6 +59,7 @@
#ifndef _AIC7XXX_LINUX_H_
#define _AIC7XXX_LINUX_H_
#include <linux/config.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
......@@ -66,18 +67,21 @@
#include <linux/pci.h>
#include <linux/smp_lock.h>
#include <linux/version.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <linux/interrupt.h> /* For tasklet support. */
#include <linux/config.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahc
#include "scsi.h"
#include <scsi/scsi_host.h>
/* Name space conflict with BSD queue macros */
#ifdef LIST_HEAD
......@@ -106,7 +110,7 @@
/************************* Forward Declarations *******************************/
struct ahc_softc;
typedef struct pci_dev *ahc_dev_softc_t;
typedef Scsi_Cmnd *ahc_io_ctx_t;
typedef struct scsi_cmnd *ahc_io_ctx_t;
/******************************* Byte Order ***********************************/
#define ahc_htobe16(x) cpu_to_be16(x)
......@@ -144,7 +148,7 @@ typedef Scsi_Cmnd *ahc_io_ctx_t;
extern u_int aic7xxx_no_probe;
extern u_int aic7xxx_allow_memio;
extern int aic7xxx_detect_complete;
extern Scsi_Host_Template aic7xxx_driver_template;
extern struct scsi_host_template aic7xxx_driver_template;
/***************************** Bus Space/DMA **********************************/
......@@ -174,11 +178,7 @@ struct ahc_linux_dma_tag
};
typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
struct ahc_linux_dmamap
{
dma_addr_t bus_addr;
};
typedef struct ahc_linux_dmamap* bus_dmamap_t;
typedef dma_addr_t bus_dmamap_t;
typedef int bus_dma_filter_t(void*, dma_addr_t);
typedef 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)
/***************************** SMP support ************************************/
#include <linux/spinlock.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
#define AHC_SCSI_HAS_HOST_LOCK 1
#else
#define AHC_SCSI_HAS_HOST_LOCK 0
#endif
#define AIC7XXX_DRIVER_VERSION "6.2.36"
/**************************** Front End Queues ********************************/
......@@ -328,20 +322,15 @@ struct ahc_cmd {
*/
TAILQ_HEAD(ahc_busyq, ahc_cmd);
typedef enum {
AHC_DEV_UNCONFIGURED = 0x01,
AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
AHC_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */
} ahc_linux_dev_flags;
struct ahc_linux_target;
struct ahc_linux_device {
TAILQ_ENTRY(ahc_linux_device) links;
struct ahc_busyq busyq;
/*
* The number of transactions currently
......@@ -381,11 +370,6 @@ struct ahc_linux_device {
ahc_linux_dev_flags flags;
/*
* Per device timer.
*/
struct timer_list timer;
/*
* The high limit for the tags variable.
*/
......@@ -419,7 +403,7 @@ struct ahc_linux_device {
#define AHC_OTAG_THRESH 500
int lun;
Scsi_Device *scsi_device;
struct scsi_device *scsi_device;
struct ahc_linux_target *target;
};
......@@ -439,32 +423,16 @@ struct ahc_linux_target {
* manner and are allocated below 4GB, the number of S/G segments is
* unrestricted.
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* We dynamically adjust the number of segments in pre-2.5 kernels to
* avoid fragmentation issues in the SCSI mid-layer's private memory
* allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details.
*/
extern u_int ahc_linux_nseg;
#define AHC_NSEG ahc_linux_nseg
#define AHC_LINUX_MIN_NSEG 64
#else
#define AHC_NSEG 128
#endif
/*
* Per-SCB OSM storage.
*/
typedef enum {
AHC_UP_EH_SEMAPHORE = 0x1
} ahc_linux_scb_flags;
struct scb_platform_data {
struct ahc_linux_device *dev;
dma_addr_t buf_busaddr;
uint32_t xfer_len;
uint32_t sense_resid; /* Auto-Sense residual */
ahc_linux_scb_flags flags;
};
/*
......@@ -473,39 +441,24 @@ struct scb_platform_data {
* alignment restrictions of the various platforms supported by
* this driver.
*/
typedef enum {
AHC_RUN_CMPLT_Q_TIMER = 0x10
} ahc_linux_softc_flags;
TAILQ_HEAD(ahc_completeq, ahc_cmd);
struct ahc_platform_data {
/*
* Fields accessed from interrupt context.
*/
struct ahc_linux_target *targets[AHC_NUM_TARGETS];
TAILQ_HEAD(, ahc_linux_device) device_runq;
struct ahc_completeq completeq;
spinlock_t spin_lock;
struct tasklet_struct runq_tasklet;
u_int qfrozen;
pid_t dv_pid;
struct timer_list completeq_timer;
struct timer_list reset_timer;
struct semaphore eh_sem;
struct semaphore dv_sem;
struct semaphore dv_cmd_sem; /* XXX This needs to be in
* the target struct
*/
struct scsi_device *dv_scsi_dev;
struct Scsi_Host *host; /* pointer to scsi host */
#define AHC_LINUX_NOIRQ ((uint32_t)~0)
uint32_t irq; /* IRQ for this adapter */
uint32_t bios_address;
uint32_t mem_busaddr; /* Mem Base Addr */
uint64_t hw_dma_mask;
ahc_linux_softc_flags flags;
#define AHC_UP_EH_SEMAPHORE 0x1
uint32_t flags;
};
/************************** OS Utility Wrappers *******************************/
......@@ -594,7 +547,7 @@ ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
/**************************** Initialization **********************************/
int ahc_linux_register_host(struct ahc_softc *,
Scsi_Host_Template *);
struct scsi_host_template *);
uint64_t ahc_linux_get_memsize(void);
......@@ -615,17 +568,6 @@ static __inline void ahc_lockinit(struct ahc_softc *);
static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
/* Lock acquisition and release of the above lock in midlayer entry points. */
static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *,
unsigned long *flags);
static __inline void ahc_midlayer_entrypoint_unlock(struct ahc_softc *,
unsigned long *flags);
/* Lock held during command compeletion to the upper layer */
static __inline void ahc_done_lockinit(struct ahc_softc *);
static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
/* Lock held during ahc_list manipulation and ahc softc frees */
extern spinlock_t ahc_list_spinlock;
static __inline void ahc_list_lockinit(void);
......@@ -650,57 +592,6 @@ ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
}
static __inline void
ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags)
{
/*
* In 2.5.X and some 2.4.X versions, the midlayer takes our
* lock just before calling us, so we avoid locking again.
* For other kernel versions, the io_request_lock is taken
* just before our entry point is called. In this case, we
* trade the io_request_lock for our per-softc lock.
*/
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock(&io_request_lock);
spin_lock(&ahc->platform_data->spin_lock);
#endif
}
static __inline void
ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock(&ahc->platform_data->spin_lock);
spin_lock(&io_request_lock);
#endif
}
static __inline void
ahc_done_lockinit(struct ahc_softc *ahc)
{
/*
* In 2.5.X, our own lock is held during completions.
* In previous versions, the io_request_lock is used.
* In either case, we can't initialize this lock again.
*/
}
static __inline void
ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_lock_irqsave(&io_request_lock, *flags);
#endif
}
static __inline void
ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock_irqrestore(&io_request_lock, *flags);
#endif
}
static __inline void
ahc_list_lockinit(void)
{
......@@ -767,12 +658,6 @@ typedef enum
} ahc_power_state;
/**************************** VL/EISA Routines ********************************/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
&& (defined(__i386__) || defined(__alpha__)) \
&& (!defined(CONFIG_EISA)))
#define CONFIG_EISA
#endif
#ifdef CONFIG_EISA
extern uint32_t aic7xxx_probe_eisa_vl;
int ahc_linux_eisa_init(void);
......@@ -888,22 +773,18 @@ ahc_flush_device_writes(struct ahc_softc *ahc)
}
/**************************** Proc FS Support *********************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
int ahc_linux_proc_info(char *, char **, off_t, int, int, int);
#else
int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
off_t, int, int);
#endif
/*************************** Domain Validation ********************************/
/*********************** Transaction Access Wrappers *************************/
static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahc_get_transaction_status(struct scb *);
static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahc_get_scsi_status(struct scb *);
static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahc_get_transfer_length(struct scb *);
......@@ -922,7 +803,7 @@ static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
static __inline void ahc_freeze_scb(struct scb *scb);
static __inline
void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~(CAM_STATUS_MASK << 16);
cmd->result |= status << 16;
......@@ -935,7 +816,7 @@ void ahc_set_transaction_status(struct scb *scb, uint32_t status)
}
static __inline
void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~0xFFFF;
cmd->result |= status;
......@@ -948,7 +829,7 @@ void ahc_set_scsi_status(struct scb *scb, uint32_t status)
}
static __inline
uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd)
uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
{
return ((cmd->result >> 16) & CAM_STATUS_MASK);
}
......@@ -960,7 +841,7 @@ uint32_t ahc_get_transaction_status(struct scb *scb)
}
static __inline
uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd)
uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
{
return (cmd->result & 0xFFFF);
}
......
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
View file @ 9636273d
......@@ -221,13 +221,11 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
&& ahc_linux_get_memsize() > 0x80000000
&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
ahc->flags |= AHC_39BIT_ADDRESSING;
ahc->platform_data->hw_dma_mask = mask_39bit;
} else {
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
return (-ENODEV);
}
ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
}
ahc->dev_softc = pci;
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)
return (-error);
}
pci_set_drvdata(pdev, ahc);
if (aic7xxx_detect_complete) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
if (aic7xxx_detect_complete)
ahc_linux_register_host(ahc, &aic7xxx_driver_template);
#else
printf("aic7xxx: ignoring PCI device found after "
"initialization\n");
return (-ENODEV);
#endif
}
return (0);
}
......
drivers/scsi/aic7xxx/aic7xxx_proc.c
View file @ 9636273d
......@@ -289,13 +289,8 @@ done:
* Return information to handle /proc support for the driver.
*/
int
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
ahc_linux_proc_info(char *buffer, char **start, off_t offset,
int length, int hostno, int inout)
#else
ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
off_t offset, int length, int inout)
#endif
{
struct ahc_softc *ahc;
struct info_str info;
......@@ -307,15 +302,7 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
retval = -EINVAL;
ahc_list_lock(&s);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
TAILQ_FOREACH(ahc, &ahc_tailq, links) {
if (ahc->platform_data->host->host_no == hostno)
break;
}
#else
ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
#endif
if (ahc == NULL)
goto done;
......
drivers/scsi/aic7xxx/aiclib.c
View file @ 9636273d
......@@ -35,7 +35,6 @@
#include <linux/version.h>
/* Core SCSI definitions */
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aiclib.h"
#include "cam.h"
......
drivers/scsi/scsi_transport_spi.c
View file @ 9636273d
......@@ -35,7 +35,7 @@
#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
#define SPI_NUM_ATTRS 10 /* increase this if you add attributes */
#define SPI_NUM_ATTRS 13 /* increase this if you add attributes */
#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
* on" attributes */
#define SPI_HOST_ATTRS 1
......@@ -219,8 +219,11 @@ static int spi_setup_transport_attrs(struct device *dev)
struct scsi_target *starget = to_scsi_target(dev);
spi_period(starget) = -1; /* illegal value */
spi_min_period(starget) = 0;
spi_offset(starget) = 0; /* async */
spi_max_offset(starget) = 255;
spi_width(starget) = 0; /* narrow */
spi_max_width(starget) = 1;
spi_iu(starget) = 0; /* no IU */
spi_dt(starget) = 0; /* ST */
spi_qas(starget) = 0;
......@@ -235,6 +238,34 @@ static int spi_setup_transport_attrs(struct device *dev)
return 0;
}
#define spi_transport_show_simple(field, format_string) \
\
static ssize_t \
show_spi_transport_##field(struct class_device *cdev, char *buf) \
{ \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct spi_transport_attrs *tp; \
\
tp = (struct spi_transport_attrs *)&starget->starget_data; \
return snprintf(buf, 20, format_string, tp->field); \
}
#define spi_transport_store_simple(field, format_string) \
\
static ssize_t \
store_spi_transport_##field(struct class_device *cdev, const char *buf, \
size_t count) \
{ \
int val; \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct spi_transport_attrs *tp; \
\
tp = (struct spi_transport_attrs *)&starget->starget_data; \
val = simple_strtoul(buf, NULL, 0); \
tp->field = val; \
return count; \
}
#define spi_transport_show_function(field, format_string) \
\
static ssize_t \
......@@ -261,6 +292,25 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
struct spi_internal *i = to_spi_internal(shost->transportt); \
\
val = simple_strtoul(buf, NULL, 0); \
i->f->set_##field(starget, val); \
return count; \
}
#define spi_transport_store_max(field, format_string) \
static ssize_t \
store_spi_transport_##field(struct class_device *cdev, const char *buf, \
size_t count) \
{ \
int val; \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
struct spi_internal *i = to_spi_internal(shost->transportt); \
struct spi_transport_attrs *tp \
= (struct spi_transport_attrs *)&starget->starget_data; \
\
val = simple_strtoul(buf, NULL, 0); \
if (val > tp->max_##field) \
val = tp->max_##field; \
i->f->set_##field(starget, val); \
return count; \
}
......@@ -272,9 +322,24 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
#define spi_transport_simple_attr(field, format_string) \
spi_transport_show_simple(field, format_string) \
spi_transport_store_simple(field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
#define spi_transport_max_attr(field, format_string) \
spi_transport_show_function(field, format_string) \
spi_transport_store_max(field, format_string) \
spi_transport_simple_attr(max_##field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
/* The Parallel SCSI Tranport Attributes: */
spi_transport_rd_attr(offset, "%d\n");
spi_transport_rd_attr(width, "%d\n");
spi_transport_max_attr(offset, "%d\n");
spi_transport_max_attr(width, "%d\n");
spi_transport_rd_attr(iu, "%d\n");
spi_transport_rd_attr(dt, "%d\n");
spi_transport_rd_attr(qas, "%d\n");
......@@ -300,26 +365,18 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
/* Translate the period into ns according to the current spec
* for SDTR/PPR messages */
static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
static ssize_t
show_spi_transport_period_helper(struct class_device *cdev, char *buf,
int period)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_transport_attrs *tp;
int len, picosec;
struct spi_internal *i = to_spi_internal(shost->transportt);
tp = (struct spi_transport_attrs *)&starget->starget_data;
if (i->f->get_period)
i->f->get_period(starget);
if (tp->period < 0 || tp->period > 0xff) {
if (period < 0 || period > 0xff) {
picosec = -1;
} else if (tp->period <= SPI_STATIC_PPR) {
picosec = ppr_to_ps[tp->period];
} else if (period <= SPI_STATIC_PPR) {
picosec = ppr_to_ps[period];
} else {
picosec = tp->period * 4000;
picosec = period * 4000;
}
if (picosec == -1) {
......@@ -334,12 +391,9 @@ static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
}
static ssize_t
store_spi_transport_period(struct class_device *cdev, const char *buf,
size_t count)
store_spi_transport_period_helper(struct class_device *cdev, const char *buf,
size_t count, int *periodp)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
int j, picosec, period = -1;
char *endp;
......@@ -368,15 +422,79 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
if (period > 0xff)
period = 0xff;
i->f->set_period(starget, period);
*periodp = period;
return count;
}
static ssize_t
show_spi_transport_period(struct class_device *cdev, char *buf)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
if (i->f->get_period)
i->f->get_period(starget);
return show_spi_transport_period_helper(cdev, buf, tp->period);
}
static ssize_t
store_spi_transport_period(struct class_device *cdev, const char *buf,
size_t count)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
int period, retval;
retval = store_spi_transport_period_helper(cdev, buf, count, &period);
if (period < tp->min_period)
period = tp->min_period;
i->f->set_period(starget, period);
return retval;
}
static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR,
show_spi_transport_period,
store_spi_transport_period);
static ssize_t
show_spi_transport_min_period(struct class_device *cdev, char *buf)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
return show_spi_transport_period_helper(cdev, buf, tp->min_period);
}
static ssize_t
store_spi_transport_min_period(struct class_device *cdev, const char *buf,
size_t count)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
return store_spi_transport_period_helper(cdev, buf, count,
&tp->min_period);
}
static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR,
show_spi_transport_min_period,
store_spi_transport_min_period);
static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf)
{
struct Scsi_Host *shost = transport_class_to_shost(cdev);
......@@ -642,6 +760,7 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
{
struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
struct scsi_device *sdev = sreq->sr_device;
struct scsi_target *starget = sdev->sdev_target;
int len = sdev->inquiry_len;
/* first set us up for narrow async */
DV_SET(offset, 0);
......@@ -655,9 +774,11 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
}
/* test width */
if (i->f->set_width && sdev->wdtr) {
if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
i->f->set_width(sdev->sdev_target, 1);
printk("WIDTH IS %d\n", spi_max_width(starget));
if (spi_dv_device_compare_inquiry(sreq, buffer,
buffer + len,
DV_LOOPS)
......@@ -684,8 +805,8 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
retry:
/* now set up to the maximum */
DV_SET(offset, 255);
DV_SET(period, 1);
DV_SET(offset, spi_max_offset(starget));
DV_SET(period, spi_min_period(starget));
if (len == 0) {
SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
......@@ -892,6 +1013,16 @@ EXPORT_SYMBOL(spi_display_xfer_agreement);
if (i->f->show_##field) \
count++
#define SETUP_RELATED_ATTRIBUTE(field, rel_field) \
i->private_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##rel_field) { \
i->private_attrs[count].attr.mode = S_IRUGO; \
i->private_attrs[count].store = NULL; \
} \
i->attrs[count] = &i->private_attrs[count]; \
if (i->f->show_##rel_field) \
count++
#define SETUP_HOST_ATTRIBUTE(field) \
i->private_host_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##field) { \
......@@ -975,8 +1106,11 @@ spi_attach_transport(struct spi_function_template *ft)
i->f = ft;
SETUP_ATTRIBUTE(period);
SETUP_RELATED_ATTRIBUTE(min_period, period);
SETUP_ATTRIBUTE(offset);
SETUP_RELATED_ATTRIBUTE(max_offset, offset);
SETUP_ATTRIBUTE(width);
SETUP_RELATED_ATTRIBUTE(max_width, width);
SETUP_ATTRIBUTE(iu);
SETUP_ATTRIBUTE(dt);
SETUP_ATTRIBUTE(qas);
......
include/scsi/scsi_transport_spi.h
View file @ 9636273d
......@@ -27,8 +27,11 @@ struct scsi_transport_template;
struct spi_transport_attrs {
int period; /* value in the PPR/SDTR command */
int min_period;
int offset;
int max_offset;
unsigned int width:1; /* 0 - narrow, 1 - wide */
unsigned int max_width:1;
unsigned int iu:1; /* Information Units enabled */
unsigned int dt:1; /* DT clocking enabled */
unsigned int qas:1; /* Quick Arbitration and Selection enabled */
......@@ -63,8 +66,11 @@ struct spi_host_attrs {
/* accessor functions */
#define spi_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->period)
#define spi_min_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->min_period)
#define spi_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->offset)
#define spi_max_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_offset)
#define spi_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->width)
#define spi_max_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_width)
#define spi_iu(x) (((struct spi_transport_attrs *)&(x)->starget_data)->iu)
#define spi_dt(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dt)
#define spi_qas(x) (((struct spi_transport_attrs *)&(x)->starget_data)->qas)
......
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