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_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,
static aic_option_callback_t ahc_linux_setup_tag_info;
static int aic7xxx_setup(char *s);
static int ahc_linux_next_unit(void);
-static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
/********************************* Inlines ************************************/
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);
+ 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);
- }
-}
-
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;
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;
- int with_errors;
-
- with_errors = 0;
- 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);
- }
- return (acmd);
+ 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);
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 *);
-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
-static int ahc_linux_bus_reset(Scsi_Cmnd *);
-static int ahc_linux_dev_reset(Scsi_Cmnd *);
-static int ahc_linux_abort(Scsi_Cmnd *);
-
/*
* 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;
* 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;
return SCSI_MLQUEUE_HOST_BUSY;
dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
- cmd->device->lun, /*alloc*/TRUE);
+ cmd->device->lun);
BUG_ON(dev == NULL);
cmd->result = CAM_REQ_INPROG << 16;
}
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;
ahc = *((struct ahc_softc **)device->host->hostdata);
+
if (bootverbose)
printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
- /*
- * 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);
- }
+
+ 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;
if (bootverbose)
printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
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 (dev->active == 0
- && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
- ahc_linux_free_device(ahc, dev);
- }
+ device->id, device->lun);
+
+ BUG_ON(dev->active);
+
+ ahc_linux_free_device(ahc, dev);
}
#if defined(__i386__)
* Abort the current SCSI command(s).
*/
static int
-ahc_linux_abort(Scsi_Cmnd *cmd)
+ahc_linux_abort(struct scsi_cmnd *cmd)
{
int error;
* 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;
* 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;
int found;
ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
/*initiate reset*/TRUE);
- ahc_linux_run_complete_queue(ahc);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "
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,
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;
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_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);
ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
int i, j;
if (ahc->platform_data != NULL) {
- del_timer_sync(&ahc->platform_data->completeq_timer);
if (ahc->platform_data->host != NULL) {
scsi_remove_host(ahc->platform_data->host);
scsi_host_put(ahc->platform_data->host);
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);
return 0;
}
-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);
-}
-
static u_int
ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
{
ahc = (struct ahc_softc *) dev_id;
ahc_lock(ahc, &flags);
ours = ahc_intr(ahc);
- ahc_linux_run_complete_queue(ahc);
ahc_unlock(ahc, &flags);
return IRQ_RETVAL(ours);
}
ahc_platform_flushwork(struct ahc_softc *ahc)
{
- while (ahc_linux_run_complete_queue(ahc) != NULL)
- ;
}
static struct ahc_linux_target*
if (dev == NULL)
return (NULL);
memset(dev, 0, sizeof(*dev));
- init_timer(&dev->timer);
- dev->flags = AHC_DEV_UNCONFIGURED;
dev->lun = lun;
dev->target = targ;
}
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;
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)
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);
}
} 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
if (dev->active == 0)
dev->commands_since_idle_or_otag = 0;
- 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
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
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
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 */
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
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->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_linux_device *dev;
* 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) {
/*
}
spin_lock_irq(&ahc->platform_data->spin_lock);
}
- ahc_linux_run_complete_queue(ahc);
return (retval);
}
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);
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,AHC_SYNCRATE_DT);
projects / linux-2.6 / blobdiff