Hi James,
you asked for it :-)
This patch updates aic79xx to use the spi transport class.
Wasn't even too hard.
Patch is relative to 2.6.12-rc6 + scsi-misc fixes.
Comments etc. welcome.
Otherwise please apply.
Cheers,
Hannes
--
Dr. Hannes Reinecke hare@xxxxxxx
SuSE Linux AG S390 & zSeries
Maxfeldstraße 5 +49 911 74053 688
90409 Nürnberg http://www.suse.de
--- linux-2.6.11.orig/drivers/scsi/aic7xxx/aic79xx_osm.c 2005-03-02 08:37:48.000000000 +0100
+++ linux-2.6.12-rc4/drivers/scsi/aic7xxx/aic79xx_osm.c 2005-05-07 07:20:31.000000000 +0200
@@ -122,6 +122,10 @@
#include "aic79xx_osm.h"
#include "aic79xx_inline.h"
#include <scsi/scsicam.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_spi.h>
+
+static struct scsi_transport_template *ahd_linux_transport_template = NULL;
/*
* Include aiclib.c as part of our
@@ -271,39 +275,6 @@ static adapter_tag_info_t aic79xx_tag_in
};
/*
- * DV option:
- *
- * positive value = DV Enabled
- * zero = DV Disabled
- * negative value = DV Default for adapter type/seeprom
- */
-#ifdef CONFIG_AIC79XX_DV_SETTING
-#define AIC79XX_CONFIGED_DV CONFIG_AIC79XX_DV_SETTING
-#else
-#define AIC79XX_CONFIGED_DV -1
-#endif
-
-static int8_t aic79xx_dv_settings[] =
-{
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV
-};
-
-/*
* The I/O cell on the chip is very configurable in respect to its analog
* characteristics. Set the defaults here; they can be overriden with
* the proper insmod parameters.
@@ -450,7 +421,6 @@ MODULE_PARM_DESC(aic79xx,
" global_tag_depth:<int> Global tag depth for every target\n"
" on every bus\n"
" rd_strm:<rd_strm_masks> Set per-target read streaming setting.\n"
-" dv:<dv_settings> Set per-controller Domain Validation Setting.\n"
" slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
" precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
" amplitude:<int> Set the signal amplitude (0-7).\n"
@@ -467,8 +437,6 @@ static void ahd_linux_handle_scsi_status
struct scb *);
static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
Scsi_Cmnd *cmd);
-static void ahd_linux_filter_inquiry(struct ahd_softc*,
- struct ahd_devinfo*);
static void ahd_linux_sem_timeout(u_long arg);
static void ahd_linux_freeze_simq(struct ahd_softc *ahd);
static void ahd_linux_release_simq(u_long arg);
@@ -476,49 +445,8 @@ static int ahd_linux_queue_recovery_cmd
static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
static void ahd_linux_size_nseg(void);
static void ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd);
-static void ahd_linux_start_dv(struct ahd_softc *ahd);
-static void ahd_linux_dv_timeout(struct scsi_cmnd *cmd);
-static int ahd_linux_dv_thread(void *data);
-static void ahd_linux_kill_dv_thread(struct ahd_softc *ahd);
-static void ahd_linux_dv_target(struct ahd_softc *ahd, u_int target);
-static void ahd_linux_dv_transition(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_fill_cmd(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_inq(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ,
- u_int request_length);
-static void ahd_linux_dv_tur(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_rebd(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_web(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_reb(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_su(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static __inline int ahd_linux_fallback(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_complete(Scsi_Cmnd *cmd);
-static void ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ);
static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo);
-static u_int ahd_linux_user_dv_setting(struct ahd_softc *ahd);
static void ahd_linux_device_queue_depth(struct ahd_softc *ahd,
struct ahd_linux_device *dev);
static struct ahd_linux_target* ahd_linux_alloc_target(struct ahd_softc*,
@@ -534,7 +462,6 @@ static void ahd_linux_run_device_queue(s
struct ahd_linux_device*);
static void ahd_linux_setup_tag_info_global(char *p);
static aic_option_callback_t ahd_linux_setup_tag_info;
-static aic_option_callback_t ahd_linux_setup_dv;
static int aic7xxx_setup(char *s);
static int ahd_linux_next_unit(void);
static void ahd_runq_tasklet(unsigned long data);
@@ -663,8 +590,7 @@ ahd_linux_next_device_to_run(struct ahd_
{
if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0
- || (ahd->platform_data->qfrozen != 0
- && AHD_DV_SIMQ_FROZEN(ahd) == 0))
+ || (ahd->platform_data->qfrozen != 0))
return (NULL);
return (TAILQ_FIRST(&ahd->platform_data->device_runq));
}
@@ -962,8 +888,7 @@ ahd_linux_queue(Scsi_Cmnd * cmd, void (*
* DV commands through so long as we are only frozen to
* perform DV.
*/
- if (ahd->platform_data->qfrozen != 0
- && AHD_DV_CMD(cmd) == 0) {
+ if (ahd->platform_data->qfrozen != 0) {
ahd_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
ahd_linux_queue_cmd_complete(ahd, cmd);
@@ -1030,6 +955,11 @@ ahd_linux_slave_configure(Scsi_Device *d
ahd_linux_device_queue_depth(ahd, dev);
}
ahd_midlayer_entrypoint_unlock(ahd, &flags);
+
+ /* Initial Domain Validation */
+ if (!spi_initial_dv(device->sdev_target))
+ spi_dv_device(device);
+
return (0);
}
@@ -1846,18 +1475,6 @@ ahd_linux_setup_tag_info(u_long arg, int
}
}
-static void
-ahd_linux_setup_dv(u_long arg, int instance, int targ, int32_t value)
-{
-
- if ((instance >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_dv_settings))) {
- aic79xx_dv_settings[instance] = value;
- if (bootverbose)
- printf("dv[%d] = %d\n", instance, value);
- }
-}
-
static void
ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
{
@@ -1616,9 +1534,6 @@ aic79xx_setup(char *s)
} else if (strncmp(p, "rd_strm", n) == 0) {
s = aic_parse_brace_option("rd_strm", p + n, end,
1, ahd_linux_setup_rd_strm_info, 0);
- } else if (strncmp(p, "dv", n) == 0) {
- s = aic_parse_brace_option("dv", p + n, end, 1,
- ahd_linux_setup_dv, 0);
} else if (strncmp(p, "slewrate", n) == 0) {
s = aic_parse_brace_option("slewrate",
p + n, end, 1, ahd_linux_setup_iocell_info,
@@ -1641,7 +1556,6 @@ ahd_linux_register_host(struct ahd_softc
struct Scsi_Host *host;
char *new_name;
u_long s;
- u_long targ_offset;
template->name = ahd->description;
host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
@@ -1677,45 +1591,11 @@ ahd_linux_register_host(struct ahd_softc
#endif
ahd_linux_setup_user_rd_strm_settings(ahd);
ahd_linux_initialize_scsi_bus(ahd);
- ahd_unlock(ahd, &s);
- ahd->platform_data->dv_pid = kernel_thread(ahd_linux_dv_thread, ahd, 0);
- ahd_lock(ahd, &s);
- if (ahd->platform_data->dv_pid < 0) {
- printf("%s: Failed to create DV thread, error= %d\n",
- ahd_name(ahd), ahd->platform_data->dv_pid);
- return (-ahd->platform_data->dv_pid);
- }
- /*
- * Initially allocate *all* of our linux target objects
- * so that the DV thread will scan them all in parallel
- * just after driver initialization. Any device that
- * does not exist will have its target object destroyed
- * by the selection timeout handler. In the case of a
- * device that appears after the initial DV scan, async
- * negotiation will occur for the first command, and DV
- * will comence should that first command be successful.
- */
- for (target = 0; target < host->max_id; target++) {
-
- /*
- * Skip our own ID. Some Compaq/HP storage devices
- * have enclosure management devices that respond to
- * single bit selection (i.e. selecting ourselves).
- * It is expected that either an external application
- * or a modified kernel will be used to probe this
- * ID if it is appropriate. To accommodate these
- * installations, ahd_linux_alloc_target() will allocate
- * for our ID if asked to do so.
- */
- if (target == ahd->our_id)
- continue;
-
- ahd_linux_alloc_target(ahd, channel, target);
- }
ahd_intr_enable(ahd, TRUE);
- ahd_linux_start_dv(ahd);
ahd_unlock(ahd, &s);
+ host->transportt = ahd_linux_transport_template;
+
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
scsi_add_host(host, &ahd->dev_softc->dev); /* XXX handle failure */
scsi_scan_host(host);
@@ -1860,8 +1728,6 @@ ahd_platform_alloc(struct ahd_softc *ahd
ahd->platform_data->completeq_timer.function =
(ahd_linux_callback_t *)ahd_linux_thread_run_complete_queue;
init_MUTEX_LOCKED(&ahd->platform_data->eh_sem);
- init_MUTEX_LOCKED(&ahd->platform_data->dv_sem);
- init_MUTEX_LOCKED(&ahd->platform_data->dv_cmd_sem);
ahd_setup_runq_tasklet(ahd);
ahd->seltime = (aic79xx_seltime & 0x3) << 4;
return (0);
@@ -1881,7 +1747,6 @@ ahd_platform_free(struct ahd_softc *ahd)
if (ahd->platform_data != NULL) {
del_timer_sync(&ahd->platform_data->completeq_timer);
- ahd_linux_kill_dv_thread(ahd);
ahd_teardown_runq_tasklet(ahd);
if (ahd->platform_data->host != NULL) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
@@ -2120,1571 +1985,200 @@ ahd_linux_thread_run_complete_queue(stru
ahd_unlock(ahd, &flags);
}
-static void
-ahd_linux_start_dv(struct ahd_softc *ahd)
+static u_int
+ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
{
+ static int warned_user;
+ u_int tags;
- /*
- * Freeze the simq and signal ahd_linux_queue to not let any
- * more commands through.
- */
- if ((ahd->platform_data->flags & AHD_DV_ACTIVE) == 0) {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s: Waking DV thread\n", ahd_name(ahd));
-#endif
+ tags = 0;
+ if ((ahd->user_discenable & devinfo->target_mask) != 0) {
+ if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
+ if (warned_user == 0) {
- ahd->platform_data->flags |= AHD_DV_ACTIVE;
- ahd_linux_freeze_simq(ahd);
+ printf(KERN_WARNING
+"aic79xx: WARNING: Insufficient tag_info instances\n"
+"aic79xx: for installed controllers. Using defaults\n"
+"aic79xx: Please update the aic79xx_tag_info array in\n"
+"aic79xx: the aic79xx_osm..c source file.\n");
+ warned_user++;
+ }
+ tags = AHD_MAX_QUEUE;
+ } else {
+ adapter_tag_info_t *tag_info;
- /* Wake up the DV kthread */
- up(&ahd->platform_data->dv_sem);
+ tag_info = &aic79xx_tag_info[ahd->unit];
+ tags = tag_info->tag_commands[devinfo->target_offset];
+ if (tags > AHD_MAX_QUEUE)
+ tags = AHD_MAX_QUEUE;
+ }
}
+ return (tags);
}
+/*
+ * Determines the queue depth for a given device.
+ */
static void
-ahd_linux_kill_dv_thread(struct ahd_softc *ahd)
+ahd_linux_device_queue_depth(struct ahd_softc *ahd,
+ struct ahd_linux_device *dev)
{
- u_long s;
-
- ahd_lock(ahd, &s);
- if (ahd->platform_data->dv_pid != 0) {
- ahd->platform_data->flags |= AHD_DV_SHUTDOWN;
- ahd_unlock(ahd, &s);
- up(&ahd->platform_data->dv_sem);
+ struct ahd_devinfo devinfo;
+ u_int tags;
- /*
- * Use the eh_sem as an indicator that the
- * dv thread is exiting. Note that the dv
- * thread must still return after performing
- * the up on our semaphore before it has
- * completely exited this module. Unfortunately,
- * there seems to be no easy way to wait for the
- * exit of a thread for which you are not the
- * parent (dv threads are parented by init).
- * Cross your fingers...
- */
- down(&ahd->platform_data->eh_sem);
+ ahd_compile_devinfo(&devinfo,
+ dev->target->channel == 0
+ ? ahd->our_id : ahd->our_id_b,
+ dev->target->target, dev->lun,
+ dev->target->channel == 0 ? 'A' : 'B',
+ ROLE_INITIATOR);
+ tags = ahd_linux_user_tagdepth(ahd, &devinfo);
+ if (tags != 0
+ && dev->scsi_device != NULL
+ && dev->scsi_device->tagged_supported != 0) {
- /*
- * Mark the dv thread as already dead. This
- * avoids attempting to kill it a second time.
- * This is necessary because we must kill the
- * DV thread before calling ahd_free() in the
- * module shutdown case to avoid bogus locking
- * in the SCSI mid-layer, but we ahd_free() is
- * called without killing the DV thread in the
- * instance detach case, so ahd_platform_free()
- * calls us again to verify that the DV thread
- * is dead.
- */
- ahd->platform_data->dv_pid = 0;
+ ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
+ ahd_print_devinfo(ahd, &devinfo);
+ printf("Tagged Queuing enabled. Depth %d\n", tags);
} else {
- ahd_unlock(ahd, &s);
+ ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
}
}
-static int
-ahd_linux_dv_thread(void *data)
+static void
+ahd_linux_run_device_queue(struct ahd_softc *ahd, struct ahd_linux_device *dev)
{
- struct ahd_softc *ahd;
- int target;
- u_long s;
-
- ahd = (struct ahd_softc *)data;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("Launching DV Thread\n");
-#endif
-
- /*
- * Complete thread creation.
- */
- lock_kernel();
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * Don't care about any signals.
- */
- siginitsetinv(¤t->blocked, 0);
-
- daemonize();
- sprintf(current->comm, "ahd_dv_%d", ahd->unit);
-#else
- daemonize("ahd_dv_%d", ahd->unit);
- current->flags |= PF_FREEZE;
-#endif
- unlock_kernel();
-
- while (1) {
- /*
- * Use down_interruptible() rather than down() to
- * avoid inclusion in the load average.
- */
- down_interruptible(&ahd->platform_data->dv_sem);
+ struct ahd_cmd *acmd;
+ struct scsi_cmnd *cmd;
+ struct scb *scb;
+ struct hardware_scb *hscb;
+ struct ahd_initiator_tinfo *tinfo;
+ struct ahd_tmode_tstate *tstate;
+ uint16_t mask;
- /* Check to see if we've been signaled to exit */
- ahd_lock(ahd, &s);
- if ((ahd->platform_data->flags & AHD_DV_SHUTDOWN) != 0) {
- ahd_unlock(ahd, &s);
- break;
- }
- ahd_unlock(ahd, &s);
+ if ((dev->flags & AHD_DEV_ON_RUN_LIST) != 0)
+ panic("running device on run list");
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s: Beginning Domain Validation\n",
- ahd_name(ahd));
-#endif
+ while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
+ && dev->openings > 0 && dev->qfrozen == 0) {
/*
- * Wait for any pending commands to drain before proceeding.
+ * Schedule us to run later. The only reason we are not
+ * running is because the whole controller Q is frozen.
*/
- ahd_lock(ahd, &s);
- while (LIST_FIRST(&ahd->pending_scbs) != NULL) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_EMPTY;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
+ if (ahd->platform_data->qfrozen != 0) {
+ TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
+ dev, links);
+ dev->flags |= AHD_DEV_ON_RUN_LIST;
+ return;
}
-
/*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
+ * Get an scb to use.
*/
- while (AHD_DV_SIMQ_FROZEN(ahd) == 0) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
+ if ((scb = ahd_get_scb(ahd)) == NULL) {
+ TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
+ dev, links);
+ dev->flags |= AHD_DEV_ON_RUN_LIST;
+ ahd->flags |= AHD_RESOURCE_SHORTAGE;
+ return;
}
- ahd_unlock(ahd, &s);
-
- for (target = 0; target < AHD_NUM_TARGETS; target++)
- ahd_linux_dv_target(ahd, target);
-
- ahd_lock(ahd, &s);
- ahd->platform_data->flags &= ~AHD_DV_ACTIVE;
- ahd_unlock(ahd, &s);
+ 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;
/*
- * Release the SIMQ so that normal commands are
- * allowed to continue on the bus.
+ * Fill out basics of the HSCB.
*/
- ahd_linux_release_simq((u_long)ahd);
- }
- up(&ahd->platform_data->eh_sem);
- return (0);
-}
+ hscb->control = 0;
+ hscb->scsiid = BUILD_SCSIID(ahd, cmd);
+ hscb->lun = cmd->device->lun;
+ mask = SCB_GET_TARGET_MASK(ahd, scb);
+ tinfo = ahd_fetch_transinfo(ahd, SCB_GET_CHANNEL(ahd, scb),
+ SCB_GET_OUR_ID(scb),
+ SCB_GET_TARGET(ahd, scb), &tstate);
+ hscb->scsirate = tinfo->scsirate;
+ hscb->scsioffset = tinfo->curr.offset;
+ if ((tstate->ultraenb & mask) != 0)
+ hscb->control |= ULTRAENB;
-#define AHD_LINUX_DV_INQ_SHORT_LEN 36
-#define AHD_LINUX_DV_INQ_LEN 256
-#define AHD_LINUX_DV_TIMEOUT (HZ / 4)
+ if ((ahd->user_discenable & mask) != 0)
+ hscb->control |= DISCENB;
-#define AHD_SET_DV_STATE(ahd, targ, newstate) \
- ahd_set_dv_state(ahd, targ, newstate, __LINE__)
+ if ((tstate->auto_negotiate & mask) != 0) {
+ scb->flags |= SCB_AUTO_NEGOTIATE;
+ scb->hscb->control |= MK_MESSAGE;
+ }
-static __inline void
-ahd_set_dv_state(struct ahd_softc *ahd, struct ahd_linux_target *targ,
- ahd_dv_state newstate, u_int line)
-{
- ahd_dv_state oldstate;
+ if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+ int msg_bytes;
+ uint8_t tag_msgs[2];
- oldstate = targ->dv_state;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s:%d: Going from state %d to state %d\n",
- ahd_name(ahd), line, oldstate, newstate);
+ 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 == AHD_OTAG_THRESH
+ && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
+ hscb->control |= MSG_ORDERED_TASK;
+ dev->commands_since_idle_or_otag = 0;
+ } else {
+ hscb->control |= MSG_SIMPLE_TASK;
+ }
+ }
- if (oldstate == newstate)
- targ->dv_state_retry++;
- else
- targ->dv_state_retry = 0;
- targ->dv_state = newstate;
-}
+ 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;
+ }
-static void
-ahd_linux_dv_target(struct ahd_softc *ahd, u_int target_offset)
-{
- struct ahd_devinfo devinfo;
- struct ahd_linux_target *targ;
- struct scsi_cmnd *cmd;
- struct scsi_device *scsi_dev;
- struct scsi_sense_data *sense;
- uint8_t *buffer;
- u_long s;
- u_int timeout;
- int echo_size;
+ scb->platform_data->xfer_len = 0;
+ ahd_set_residual(scb, 0);
+ ahd_set_sense_residual(scb, 0);
+ scb->sg_count = 0;
+ if (cmd->use_sg != 0) {
+ struct ahd_dma_seg *sg;
+ struct scatterlist *cur_seg;
+ struct scatterlist *end_seg;
+ int nseg;
- sense = NULL;
- buffer = NULL;
- echo_size = 0;
- ahd_lock(ahd, &s);
- targ = ahd->platform_data->targets[target_offset];
- if (targ == NULL || (targ->flags & AHD_DV_REQUIRED) == 0) {
- ahd_unlock(ahd, &s);
- return;
- }
- ahd_compile_devinfo(&devinfo,
- targ->channel == 0 ? ahd->our_id : ahd->our_id_b,
- targ->target, /*lun*/0, targ->channel + 'A',
- ROLE_INITIATOR);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("Performing DV\n");
- }
-#endif
+ cur_seg = (struct scatterlist *)cmd->request_buffer;
+ nseg = pci_map_sg(ahd->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;
- ahd_unlock(ahd, &s);
+ addr = sg_dma_address(cur_seg);
+ len = sg_dma_len(cur_seg);
+ consumed = ahd_linux_map_seg(ahd, scb,
+ sg, addr, len);
+ sg += consumed;
+ scb->sg_count += consumed;
+ cur_seg++;
+ }
+ sg--;
+ sg->len |= ahd_htole32(AHD_DMA_LAST_SEG);
- cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK);
- scsi_dev = malloc(sizeof(struct scsi_device), M_DEVBUF, M_WAITOK);
- scsi_dev->host = ahd->platform_data->host;
- scsi_dev->id = devinfo.target;
- scsi_dev->lun = devinfo.lun;
- scsi_dev->channel = devinfo.channel - 'A';
- ahd->platform_data->dv_scsi_dev = scsi_dev;
-
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_SHORT_ASYNC);
-
- while (targ->dv_state != AHD_DV_STATE_EXIT) {
- timeout = AHD_LINUX_DV_TIMEOUT;
- switch (targ->dv_state) {
- case AHD_DV_STATE_INQ_SHORT_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC_VERIFY:
/*
- * Set things to async narrow to reduce the
- * chance that the INQ will fail.
- */
- ahd_lock(ahd, &s);
- ahd_set_syncrate(ahd, &devinfo, NULL, 0, 0, 0,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_unlock(ahd, &s);
- timeout = 10 * HZ;
- targ->flags &= ~AHD_INQ_VALID;
- /* FALLTHROUGH */
- case AHD_DV_STATE_INQ_VERIFY:
- {
- u_int inq_len;
-
- if (targ->dv_state == AHD_DV_STATE_INQ_SHORT_ASYNC)
- inq_len = AHD_LINUX_DV_INQ_SHORT_LEN;
- else
- inq_len = targ->inq_data->additional_length + 5;
- ahd_linux_dv_inq(ahd, cmd, &devinfo, targ, inq_len);
- break;
- }
- case AHD_DV_STATE_TUR:
- case AHD_DV_STATE_BUSY:
- timeout = 5 * HZ;
- ahd_linux_dv_tur(ahd, cmd, &devinfo);
- break;
- case AHD_DV_STATE_REBD:
- ahd_linux_dv_rebd(ahd, cmd, &devinfo, targ);
- break;
- case AHD_DV_STATE_WEB:
- ahd_linux_dv_web(ahd, cmd, &devinfo, targ);
- break;
-
- case AHD_DV_STATE_REB:
- ahd_linux_dv_reb(ahd, cmd, &devinfo, targ);
- break;
-
- case AHD_DV_STATE_SU:
- ahd_linux_dv_su(ahd, cmd, &devinfo, targ);
- timeout = 50 * HZ;
- break;
-
- default:
- ahd_print_devinfo(ahd, &devinfo);
- printf("Unknown DV state %d\n", targ->dv_state);
- goto out;
- }
-
- /* Queue the command and wait for it to complete */
- /* Abuse eh_timeout in the scsi_cmnd struct for our purposes */
- init_timer(&cmd->eh_timeout);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- /*
- * All of the printfs during negotiation
- * really slow down the negotiation.
- * Add a bit of time just to be safe.
- */
- timeout += HZ;
-#endif
- scsi_add_timer(cmd, timeout, ahd_linux_dv_timeout);
- /*
- * In 2.5.X, it is assumed that all calls from the
- * "midlayer" (which we are emulating) will have the
- * ahd host lock held. For other kernels, the
- * io_request_lock must be held.
- */
-#if AHD_SCSI_HAS_HOST_LOCK != 0
- ahd_lock(ahd, &s);
-#else
- spin_lock_irqsave(&io_request_lock, s);
-#endif
- ahd_linux_queue(cmd, ahd_linux_dv_complete);
-#if AHD_SCSI_HAS_HOST_LOCK != 0
- ahd_unlock(ahd, &s);
-#else
- spin_unlock_irqrestore(&io_request_lock, s);
-#endif
- down_interruptible(&ahd->platform_data->dv_cmd_sem);
- /*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
- */
- ahd_lock(ahd, &s);
- while (AHD_DV_SIMQ_FROZEN(ahd) == 0) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
- }
- ahd_unlock(ahd, &s);
-
- ahd_linux_dv_transition(ahd, cmd, &devinfo, targ);
- }
-
-out:
- if ((targ->flags & AHD_INQ_VALID) != 0
- && ahd_linux_get_device(ahd, devinfo.channel - 'A',
- devinfo.target, devinfo.lun,
- /*alloc*/FALSE) == NULL) {
- /*
- * The DV state machine failed to configure this device.
- * This is normal if DV is disabled. Since we have inquiry
- * data, filter it and use the "optimistic" negotiation
- * parameters found in the inquiry string.
- */
- ahd_linux_filter_inquiry(ahd, &devinfo);
- if ((targ->flags & (AHD_BASIC_DV|AHD_ENHANCED_DV)) != 0) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("DV failed to configure device. "
- "Please file a bug report against "
- "this driver.\n");
- }
- }
-
- if (cmd != NULL)
- free(cmd, M_DEVBUF);
-
- if (ahd->platform_data->dv_scsi_dev != NULL) {
- free(ahd->platform_data->dv_scsi_dev, M_DEVBUF);
- ahd->platform_data->dv_scsi_dev = NULL;
- }
-
- ahd_lock(ahd, &s);
- if (targ->dv_buffer != NULL) {
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = NULL;
- }
- if (targ->dv_buffer1 != NULL) {
- free(targ->dv_buffer1, M_DEVBUF);
- targ->dv_buffer1 = NULL;
- }
- targ->flags &= ~AHD_DV_REQUIRED;
- if (targ->refcount == 0)
- ahd_linux_free_target(ahd, targ);
- ahd_unlock(ahd, &s);
-}
-
-static void
-ahd_linux_dv_transition(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ)
-{
- u_int32_t status;
-
- status = aic_error_action(cmd, targ->inq_data,
- ahd_cmd_get_transaction_status(cmd),
- ahd_cmd_get_scsi_status(cmd));
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Entering ahd_linux_dv_transition, state= %d, "
- "status= 0x%x, cmd->result= 0x%x\n", targ->dv_state,
- status, cmd->result);
- }
-#endif
-
- switch (targ->dv_state) {
- case AHD_DV_STATE_INQ_SHORT_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
- if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
- case AHD_DV_STATE_INQ_ASYNC_VERIFY:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- u_int xportflags;
- u_int spi3data;
-
- if (memcmp(targ->inq_data, targ->dv_buffer,
- AHD_LINUX_DV_INQ_LEN) != 0) {
- /*
- * Inquiry data must have changed.
- * Try from the top again.
- */
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- }
-
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1);
- targ->flags |= AHD_INQ_VALID;
- if (ahd_linux_user_dv_setting(ahd) == 0)
- break;
-
- xportflags = targ->inq_data->flags;
- if ((xportflags & (SID_Sync|SID_WBus16)) == 0)
- break;
-
- spi3data = targ->inq_data->spi3data;
- switch (spi3data & SID_SPI_CLOCK_DT_ST) {
- default:
- case SID_SPI_CLOCK_ST:
- /* Assume only basic DV is supported. */
- targ->flags |= AHD_BASIC_DV;
- break;
- case SID_SPI_CLOCK_DT:
- case SID_SPI_CLOCK_DT_ST:
- targ->flags |= AHD_ENHANCED_DV;
- break;
- }
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
-
- if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
- case AHD_DV_STATE_INQ_VERIFY:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
-
- if (memcmp(targ->inq_data, targ->dv_buffer,
- AHD_LINUX_DV_INQ_LEN) == 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- int i;
-
- ahd_print_devinfo(ahd, devinfo);
- printf("Inquiry buffer mismatch:");
- for (i = 0; i < AHD_LINUX_DV_INQ_LEN; i++) {
- if ((i & 0xF) == 0)
- printf("\n ");
- printf("0x%x:0x0%x ",
- ((uint8_t *)targ->inq_data)[i],
- targ->dv_buffer[i]);
- }
- printf("\n");
- }
-#endif
-
- if (ahd_linux_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- } else if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
-
- case AHD_DV_STATE_TUR:
- switch (status & SS_MASK) {
- case SS_NOP:
- if ((targ->flags & AHD_BASIC_DV) != 0) {
- ahd_linux_filter_inquiry(ahd, devinfo);
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_VERIFY);
- } else if ((targ->flags & AHD_ENHANCED_DV) != 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REBD);
- } else {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- }
- break;
- case SS_RETRY:
- case SS_TUR:
- if ((status & SS_ERRMASK) == EBUSY) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- break;
- }
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- }
- if (targ->dv_state_retry >= 10) {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV TUR reties exhausted\n");
- }
-#endif
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- if (status & SSQ_DELAY)
- ssleep(1);
-
- break;
- case SS_START:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_SU);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_REBD:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- uint32_t echo_size;
-
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB);
- echo_size = scsi_3btoul(&targ->dv_buffer[1]);
- echo_size &= 0x1FFF;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Echo buffer size= %d\n", echo_size);
- }
-#endif
- if (echo_size == 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-
- /* Generate the buffer pattern */
- targ->dv_echo_size = echo_size;
- ahd_linux_generate_dv_pattern(targ);
- /*
- * Setup initial negotiation values.
- */
- ahd_linux_filter_inquiry(ahd, devinfo);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
- if (targ->dv_state_retry <= 10)
- break;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV REBD reties exhausted\n");
- }
-#endif
- /* FALLTHROUGH */
- case SS_FATAL:
- default:
- /*
- * Setup initial negotiation values
- * and try level 1 DV.
- */
- ahd_linux_filter_inquiry(ahd, devinfo);
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_VERIFY);
- targ->dv_echo_size = 0;
- break;
- }
- break;
-
- case AHD_DV_STATE_WEB:
- switch (status & SS_MASK) {
- case SS_NOP:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REB);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- }
- if (targ->dv_state_retry <= 10)
- break;
- /* FALLTHROUGH */
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV WEB reties exhausted\n");
- }
-#endif
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_REB:
- switch (status & SS_MASK) {
- case SS_NOP:
- if (memcmp(targ->dv_buffer, targ->dv_buffer1,
- targ->dv_echo_size) != 0) {
- if (ahd_linux_fallback(ahd, devinfo) != 0)
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- else
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_WEB);
- break;
- }
-
- if (targ->dv_buffer != NULL) {
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = NULL;
- }
- if (targ->dv_buffer1 != NULL) {
- free(targ->dv_buffer1, M_DEVBUF);
- targ->dv_buffer1 = NULL;
- }
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB);
- }
- if (targ->dv_state_retry <= 10) {
- if ((status & (SSQ_DELAY_RANDOM|SSQ_DELAY))!= 0)
- msleep(ahd->our_id*1000/10);
- break;
- }
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV REB reties exhausted\n");
- }
-#endif
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_SU:
- switch (status & SS_MASK) {
- case SS_NOP:
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_BUSY:
- switch (status & SS_MASK) {
- case SS_NOP:
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if (targ->dv_state_retry < 60) {
- if ((status & SSQ_DELAY) != 0)
- ssleep(1);
- } else {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV BUSY reties exhausted\n");
- }
-#endif
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- }
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- default:
- printf("%s: Invalid DV completion state %d\n", ahd_name(ahd),
- targ->dv_state);
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-}
-
-static void
-ahd_linux_dv_fill_cmd(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo)
-{
- memset(cmd, 0, sizeof(struct scsi_cmnd));
- cmd->device = ahd->platform_data->dv_scsi_dev;
- cmd->scsi_done = ahd_linux_dv_complete;
-}
-
-/*
- * Synthesize an inquiry command. On the return trip, it'll be
- * sniffed and the device transfer settings set for us.
- */
-static void
-ahd_linux_dv_inq(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ,
- u_int request_length)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending INQ\n");
- }
-#endif
- if (targ->inq_data == NULL)
- targ->inq_data = malloc(AHD_LINUX_DV_INQ_LEN,
- M_DEVBUF, M_WAITOK);
- if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC) {
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(AHD_LINUX_DV_INQ_LEN,
- M_DEVBUF, M_WAITOK);
- }
-
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = INQUIRY;
- cmd->cmnd[4] = request_length;
- cmd->request_bufflen = request_length;
- if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC)
- cmd->request_buffer = targ->dv_buffer;
- else
- cmd->request_buffer = targ->inq_data;
- memset(cmd->request_buffer, 0, AHD_LINUX_DV_INQ_LEN);
-}
-
-static void
-ahd_linux_dv_tur(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending TUR\n");
- }
-#endif
- /* Do a TUR to clear out any non-fatal transitional state */
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_NONE;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = TEST_UNIT_READY;
-}
-
-#define AHD_REBD_LEN 4
-
-static void
-ahd_linux_dv_rebd(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending REBD\n");
- }
-#endif
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(AHD_REBD_LEN, M_DEVBUF, M_WAITOK);
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = READ_BUFFER;
- cmd->cmnd[1] = 0x0b;
- scsi_ulto3b(AHD_REBD_LEN, &cmd->cmnd[6]);
- cmd->request_bufflen = AHD_REBD_LEN;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer;
-}
-
-static void
-ahd_linux_dv_web(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending WEB\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_WRITE;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = WRITE_BUFFER;
- cmd->cmnd[1] = 0x0a;
- scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]);
- cmd->request_bufflen = targ->dv_echo_size;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer;
-}
-
-static void
-ahd_linux_dv_reb(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending REB\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = READ_BUFFER;
- cmd->cmnd[1] = 0x0a;
- scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]);
- cmd->request_bufflen = targ->dv_echo_size;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer1;
-}
-
-static void
-ahd_linux_dv_su(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ)
-{
- u_int le;
-
- le = SID_IS_REMOVABLE(targ->inq_data) ? SSS_LOEJ : 0;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending SU\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_NONE;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = START_STOP_UNIT;
- cmd->cmnd[4] = le | SSS_START;
-}
-
-static int
-ahd_linux_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct ahd_linux_target *targ;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_transinfo *goal;
- struct ahd_tmode_tstate *tstate;
- struct ahd_syncrate *syncrate;
- u_long s;
- u_int width;
- u_int period;
- u_int offset;
- u_int ppr_options;
- u_int cur_speed;
- u_int wide_speed;
- u_int narrow_speed;
- u_int fallback_speed;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Trying to fallback\n");
- }
-#endif
- ahd_lock(ahd, &s);
- targ = ahd->platform_data->targets[devinfo->target_offset];
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target, &tstate);
- goal = &tinfo->goal;
- width = goal->width;
- period = goal->period;
- offset = goal->offset;
- ppr_options = goal->ppr_options;
- if (offset == 0)
- period = AHD_ASYNC_XFER_PERIOD;
- if (targ->dv_next_narrow_period == 0)
- targ->dv_next_narrow_period = MAX(period, AHD_SYNCRATE_ULTRA2);
- if (targ->dv_next_wide_period == 0)
- targ->dv_next_wide_period = period;
- if (targ->dv_max_width == 0)
- targ->dv_max_width = width;
- if (targ->dv_max_ppr_options == 0)
- targ->dv_max_ppr_options = ppr_options;
- if (targ->dv_last_ppr_options == 0)
- targ->dv_last_ppr_options = ppr_options;
-
- cur_speed = aic_calc_speed(width, period, offset, AHD_SYNCRATE_MIN);
- wide_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_16_BIT,
- targ->dv_next_wide_period,
- MAX_OFFSET,
- AHD_SYNCRATE_MIN);
- narrow_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_8_BIT,
- targ->dv_next_narrow_period,
- MAX_OFFSET,
- AHD_SYNCRATE_MIN);
- fallback_speed = aic_calc_speed(width, period+1, offset,
- AHD_SYNCRATE_MIN);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- printf("cur_speed= %d, wide_speed= %d, narrow_speed= %d, "
- "fallback_speed= %d\n", cur_speed, wide_speed,
- narrow_speed, fallback_speed);
- }
-#endif
-
- if (cur_speed > 160000) {
- /*
- * Paced/DT/IU_REQ only transfer speeds. All we
- * can do is fallback in terms of syncrate.
- */
- period++;
- } else if (cur_speed > 80000) {
- if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- /*
- * Try without IU_REQ as it may be confusing
- * an expander.
- */
- ppr_options &= ~MSG_EXT_PPR_IU_REQ;
- } else {
- /*
- * Paced/DT only transfer speeds. All we
- * can do is fallback in terms of syncrate.
- */
- period++;
- ppr_options = targ->dv_max_ppr_options;
- }
- } else if (cur_speed > 3300) {
-
- /*
- * In this range we the following
- * options ordered from highest to
- * lowest desireability:
- *
- * o Wide/DT
- * o Wide/non-DT
- * o Narrow at a potentally higher sync rate.
- *
- * All modes are tested with and without IU_REQ
- * set since using IUs may confuse an expander.
- */
- if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
-
- ppr_options &= ~MSG_EXT_PPR_IU_REQ;
- } else if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
- /*
- * Try going non-DT.
- */
- ppr_options = targ->dv_max_ppr_options;
- ppr_options &= ~MSG_EXT_PPR_DT_REQ;
- } else if (targ->dv_last_ppr_options != 0) {
- /*
- * Try without QAS or any other PPR options.
- * We may need a non-PPR message to work with
- * an expander. We look at the "last PPR options"
- * so we will perform this fallback even if the
- * target responded to our PPR negotiation with
- * no option bits set.
- */
- ppr_options = 0;
- } else if (width == MSG_EXT_WDTR_BUS_16_BIT) {
- /*
- * If the next narrow speed is greater than
- * the next wide speed, fallback to narrow.
- * Otherwise fallback to the next DT/Wide setting.
- * The narrow async speed will always be smaller
- * than the wide async speed, so handle this case
- * specifically.
- */
- ppr_options = targ->dv_max_ppr_options;
- if (narrow_speed > fallback_speed
- || period >= AHD_ASYNC_XFER_PERIOD) {
- targ->dv_next_wide_period = period+1;
- width = MSG_EXT_WDTR_BUS_8_BIT;
- period = targ->dv_next_narrow_period;
- } else {
- period++;
- }
- } else if ((ahd->features & AHD_WIDE) != 0
- && targ->dv_max_width != 0
- && wide_speed >= fallback_speed
- && (targ->dv_next_wide_period <= AHD_ASYNC_XFER_PERIOD
- || period >= AHD_ASYNC_XFER_PERIOD)) {
-
- /*
- * We are narrow. Try falling back
- * to the next wide speed with
- * all supported ppr options set.
- */
- targ->dv_next_narrow_period = period+1;
- width = MSG_EXT_WDTR_BUS_16_BIT;
- period = targ->dv_next_wide_period;
- ppr_options = targ->dv_max_ppr_options;
- } else {
- /* Only narrow fallback is allowed. */
- period++;
- ppr_options = targ->dv_max_ppr_options;
- }
- } else {
- ahd_unlock(ahd, &s);
- return (-1);
- }
- offset = MAX_OFFSET;
- syncrate = ahd_find_syncrate(ahd, &period, &ppr_options,
- AHD_SYNCRATE_DT);
- ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, FALSE);
- if (period == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- if (width == MSG_EXT_WDTR_BUS_8_BIT)
- targ->dv_next_narrow_period = AHD_ASYNC_XFER_PERIOD;
- else
- targ->dv_next_wide_period = AHD_ASYNC_XFER_PERIOD;
- }
- ahd_set_syncrate(ahd, devinfo, syncrate, period, offset,
- ppr_options, AHD_TRANS_GOAL, FALSE);
- targ->dv_last_ppr_options = ppr_options;
- ahd_unlock(ahd, &s);
- return (0);
-}
-
-static void
-ahd_linux_dv_timeout(struct scsi_cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct scb *scb;
- u_long flags;
-
- ahd = *((struct ahd_softc **)cmd->device->host->hostdata);
- ahd_lock(ahd, &flags);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- printf("%s: Timeout while doing DV command %x.\n",
- ahd_name(ahd), cmd->cmnd[0]);
- ahd_dump_card_state(ahd);
- }
-#endif
-
- /*
- * Guard against "done race". No action is
- * required if we just completed.
- */
- if ((scb = (struct scb *)cmd->host_scribble) == NULL) {
- ahd_unlock(ahd, &flags);
- return;
- }
-
- /*
- * Command has not completed. Mark this
- * SCB as having failing status prior to
- * resetting the bus, so we get the correct
- * error code.
- */
- if ((scb->flags & SCB_SENSE) != 0)
- ahd_set_transaction_status(scb, CAM_AUTOSENSE_FAIL);
- else
- ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
- ahd_reset_channel(ahd, cmd->device->channel + 'A', /*initiate*/TRUE);
-
- /*
- * Add a minimal bus settle delay for devices that are slow to
- * respond after bus resets.
- */
- ahd_linux_freeze_simq(ahd);
- init_timer(&ahd->platform_data->reset_timer);
- ahd->platform_data->reset_timer.data = (u_long)ahd;
- ahd->platform_data->reset_timer.expires = jiffies + HZ / 2;
- ahd->platform_data->reset_timer.function =
- (ahd_linux_callback_t *)ahd_linux_release_simq;
- add_timer(&ahd->platform_data->reset_timer);
- if (ahd_linux_next_device_to_run(ahd) != NULL)
- ahd_schedule_runq(ahd);
- ahd_linux_run_complete_queue(ahd);
- ahd_unlock(ahd, &flags);
-}
-
-static void
-ahd_linux_dv_complete(struct scsi_cmnd *cmd)
-{
- struct ahd_softc *ahd;
-
- ahd = *((struct ahd_softc **)cmd->device->host->hostdata);
-
- /* Delete the DV timer before it goes off! */
- scsi_delete_timer(cmd);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s:%d:%d: Command completed, status= 0x%x\n",
- ahd_name(ahd), cmd->device->channel,
- cmd->device->id, cmd->result);
-#endif
-
- /* Wake up the state machine */
- up(&ahd->platform_data->dv_cmd_sem);
-}
-
-static void
-ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ)
-{
- uint16_t b;
- u_int i;
- u_int j;
-
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK);
- if (targ->dv_buffer1 != NULL)
- free(targ->dv_buffer1, M_DEVBUF);
- targ->dv_buffer1 = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK);
-
- i = 0;
- b = 0x0001;
- for (j = 0 ; i < targ->dv_echo_size; j++) {
- if (j < 32) {
- /*
- * 32bytes of sequential numbers.
- */
- targ->dv_buffer[i++] = j & 0xff;
- } else if (j < 48) {
- /*
- * 32bytes of repeating 0x0000, 0xffff.
- */
- targ->dv_buffer[i++] = (j & 0x02) ? 0xff : 0x00;
- } else if (j < 64) {
- /*
- * 32bytes of repeating 0x5555, 0xaaaa.
- */
- targ->dv_buffer[i++] = (j & 0x02) ? 0xaa : 0x55;
- } else {
- /*
- * Remaining buffer is filled with a repeating
- * patter of:
- *
- * 0xffff
- * ~0x0001 << shifted once in each loop.
- */
- if (j & 0x02) {
- if (j & 0x01) {
- targ->dv_buffer[i++] = ~(b >> 8) & 0xff;
- b <<= 1;
- if (b == 0x0000)
- b = 0x0001;
- } else {
- targ->dv_buffer[i++] = (~b & 0xff);
- }
- } else {
- targ->dv_buffer[i++] = 0xff;
- }
- }
- }
-}
-
-static u_int
-ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- static int warned_user;
- u_int tags;
-
- tags = 0;
- if ((ahd->user_discenable & devinfo->target_mask) != 0) {
- if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
- if (warned_user == 0) {
-
- printf(KERN_WARNING
-"aic79xx: WARNING: Insufficient tag_info instances\n"
-"aic79xx: for installed controllers. Using defaults\n"
-"aic79xx: Please update the aic79xx_tag_info array in\n"
-"aic79xx: the aic79xx_osm..c source file.\n");
- warned_user++;
- }
- tags = AHD_MAX_QUEUE;
- } else {
- adapter_tag_info_t *tag_info;
-
- tag_info = &aic79xx_tag_info[ahd->unit];
- tags = tag_info->tag_commands[devinfo->target_offset];
- if (tags > AHD_MAX_QUEUE)
- tags = AHD_MAX_QUEUE;
- }
- }
- return (tags);
-}
-
-static u_int
-ahd_linux_user_dv_setting(struct ahd_softc *ahd)
-{
- static int warned_user;
- int dv;
-
- if (ahd->unit >= NUM_ELEMENTS(aic79xx_dv_settings)) {
- if (warned_user == 0) {
-
- printf(KERN_WARNING
-"aic79xx: WARNING: Insufficient dv settings instances\n"
-"aic79xx: for installed controllers. Using defaults\n"
-"aic79xx: Please update the aic79xx_dv_settings array\n"
-"aic79xx: in the aic79xx_osm.c source file.\n");
- warned_user++;
- }
- dv = -1;
- } else {
-
- dv = aic79xx_dv_settings[ahd->unit];
- }
-
- if (dv < 0) {
- u_long s;
-
- /*
- * Apply the default.
- */
- /*
- * XXX - Enable DV on non-U160 controllers once it
- * has been tested there.
- */
- ahd_lock(ahd, &s);
- dv = (ahd->features & AHD_DT);
- if (ahd->seep_config != 0
- && ahd->seep_config->signature >= CFSIGNATURE2)
- dv = (ahd->seep_config->adapter_control & CFENABLEDV);
- ahd_unlock(ahd, &s);
- }
- return (dv);
-}
-
-/*
- * Determines the queue depth for a given device.
- */
-static void
-ahd_linux_device_queue_depth(struct ahd_softc *ahd,
- struct ahd_linux_device *dev)
-{
- struct ahd_devinfo devinfo;
- u_int tags;
-
- ahd_compile_devinfo(&devinfo,
- dev->target->channel == 0
- ? ahd->our_id : ahd->our_id_b,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A' : 'B',
- ROLE_INITIATOR);
- tags = ahd_linux_user_tagdepth(ahd, &devinfo);
- if (tags != 0
- && dev->scsi_device != NULL
- && dev->scsi_device->tagged_supported != 0) {
-
- ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
- ahd_print_devinfo(ahd, &devinfo);
- printf("Tagged Queuing enabled. Depth %d\n", tags);
- } else {
- ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
- }
-}
-
-static void
-ahd_linux_run_device_queue(struct ahd_softc *ahd, struct ahd_linux_device *dev)
-{
- struct ahd_cmd *acmd;
- struct scsi_cmnd *cmd;
- struct scb *scb;
- struct hardware_scb *hscb;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- uint16_t mask;
-
- if ((dev->flags & AHD_DEV_ON_RUN_LIST) != 0)
- panic("running device on run list");
-
- while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
- && dev->openings > 0 && dev->qfrozen == 0) {
-
- /*
- * Schedule us to run later. The only reason we are not
- * running is because the whole controller Q is frozen.
- */
- if (ahd->platform_data->qfrozen != 0
- && AHD_DV_SIMQ_FROZEN(ahd) == 0) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
- dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- return;
- }
- /*
- * Get an scb to use.
- */
- if ((scb = ahd_get_scb(ahd)) == NULL) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
- dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- ahd->flags |= AHD_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;
-
- /*
- * Fill out basics of the HSCB.
- */
- hscb->control = 0;
- hscb->scsiid = BUILD_SCSIID(ahd, cmd);
- hscb->lun = cmd->device->lun;
- mask = SCB_GET_TARGET_MASK(ahd, scb);
- tinfo = ahd_fetch_transinfo(ahd, SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_OUR_ID(scb),
- SCB_GET_TARGET(ahd, scb), &tstate);
- hscb->scsirate = tinfo->scsirate;
- hscb->scsioffset = tinfo->curr.offset;
- if ((tstate->ultraenb & mask) != 0)
- hscb->control |= ULTRAENB;
-
- if ((ahd->user_discenable & mask) != 0)
- hscb->control |= DISCENB;
-
- if (AHD_DV_CMD(cmd) != 0)
- scb->flags |= SCB_SILENT;
-
- if ((tstate->auto_negotiate & mask) != 0) {
- scb->flags |= SCB_AUTO_NEGOTIATE;
- scb->hscb->control |= MK_MESSAGE;
- }
-
- if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- 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
-#endif
- if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
- && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
- hscb->control |= 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 {
- memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
- scb->flags |= SCB_CDB32_PTR;
- }
-
- scb->platform_data->xfer_len = 0;
- ahd_set_residual(scb, 0);
- ahd_set_sense_residual(scb, 0);
- scb->sg_count = 0;
- if (cmd->use_sg != 0) {
- struct ahd_dma_seg *sg;
- struct scatterlist *cur_seg;
- struct scatterlist *end_seg;
- int nseg;
-
- cur_seg = (struct scatterlist *)cmd->request_buffer;
- nseg = pci_map_sg(ahd->dev_softc, cur_seg, cmd->use_sg,
- scsi_to_pci_dma_dir(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 = ahd_linux_map_seg(ahd, scb,
- sg, addr, len);
- sg += consumed;
- scb->sg_count += consumed;
- cur_seg++;
- }
- sg--;
- sg->len |= ahd_htole32(AHD_DMA_LAST_SEG);
-
- /*
- * Reset the sg list pointer.
+ * Reset the sg list pointer.
*/
scb->hscb->sgptr =
ahd_htole32(scb->sg_list_phys | SG_FULL_RESID);
@@ -3805,7 +2299,6 @@ ahd_linux_alloc_target(struct ahd_softc
targ->channel = channel;
targ->target = target;
targ->ahd = ahd;
- targ->flags = AHD_DV_REQUIRED;
ahd->platform_data->targets[target_offset] = targ;
return (targ);
}
@@ -3842,12 +2335,6 @@ ahd_linux_free_target(struct ahd_softc *
AHD_TRANS_GOAL, /*paused*/FALSE);
ahd_update_neg_request(ahd, &devinfo, tstate, tinfo, AHD_NEG_ALWAYS);
ahd->platform_data->targets[target_offset] = NULL;
- if (targ->inq_data != NULL)
- free(targ->inq_data, M_DEVBUF);
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- if (targ->dv_buffer1 != NULL)
- free(targ->dv_buffer1, M_DEVBUF);
free(targ, M_DEVBUF);
}
@@ -3894,8 +2381,7 @@ __ahd_linux_free_device(struct ahd_softc
targ->devices[dev->lun] = NULL;
free(dev, M_DEVBUF);
targ->refcount--;
- if (targ->refcount == 0
- && (targ->flags & AHD_DV_REQUIRED) == 0)
+ if (targ->refcount == 0)
ahd_linux_free_target(ahd, targ);
}
@@ -4099,16 +2585,7 @@ ahd_done(struct ahd_softc *ahd, struct s
ahd_linux_handle_scsi_status(ahd, dev, scb);
} else if (ahd_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
dev->flags |= AHD_DEV_UNCONFIGURED;
- if (AHD_DV_CMD(cmd) == FALSE)
- dev->target->flags &= ~AHD_DV_REQUIRED;
}
- /*
- * Start DV for devices that require it assuming the first command
- * sent does not result in a selection timeout.
- */
- if (ahd_get_transaction_status(scb) != CAM_SEL_TIMEOUT
- && (dev->target->flags & AHD_DV_REQUIRED) != 0)
- ahd_linux_start_dv(ahd);
if (dev->openings == 1
&& ahd_get_transaction_status(scb) == CAM_REQ_CMP
@@ -4152,13 +2629,6 @@ ahd_done(struct ahd_softc *ahd, struct s
ahd_free_scb(ahd, scb);
ahd_linux_queue_cmd_complete(ahd, cmd);
-
- if ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_EMPTY) != 0
- && LIST_FIRST(&ahd->pending_scbs) == NULL) {
- ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_EMPTY;
- up(&ahd->platform_data->dv_sem);
- }
-
}
static void
@@ -4335,7 +2805,7 @@ ahd_linux_queue_cmd_complete(struct ahd_
* full error information available when making
* state change decisions.
*/
- if (AHD_DV_CMD(cmd) == FALSE) {
+ {
uint32_t status;
u_int new_status;
@@ -4426,106 +2896,6 @@ ahd_linux_queue_cmd_complete(struct ahd_
}
static void
-ahd_linux_filter_inquiry(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct scsi_inquiry_data *sid;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_transinfo *user;
- struct ahd_transinfo *goal;
- struct ahd_transinfo *curr;
- struct ahd_tmode_tstate *tstate;
- struct ahd_syncrate *syncrate;
- struct ahd_linux_device *dev;
- u_int width;
- u_int period;
- u_int offset;
- u_int ppr_options;
- u_int trans_version;
- u_int prot_version;
-
- /*
- * Determine if this lun actually exists. If so,
- * hold on to its corresponding device structure.
- * If not, make sure we release the device and
- * don't bother processing the rest of this inquiry
- * command.
- */
- dev = ahd_linux_get_device(ahd, devinfo->channel - 'A',
- devinfo->target, devinfo->lun,
- /*alloc*/TRUE);
-
- sid = (struct scsi_inquiry_data *)dev->target->inq_data;
- if (SID_QUAL(sid) == SID_QUAL_LU_CONNECTED) {
-
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- } else {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- return;
- }
-
- /*
- * Update our notion of this device's transfer
- * negotiation capabilities.
- */
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target, &tstate);
- user = &tinfo->user;
- goal = &tinfo->goal;
- curr = &tinfo->curr;
- width = user->width;
- period = user->period;
- offset = user->offset;
- ppr_options = user->ppr_options;
- trans_version = user->transport_version;
- prot_version = MIN(user->protocol_version, SID_ANSI_REV(sid));
-
- /*
- * Only attempt SPI3/4 once we've verified that
- * the device claims to support SPI3/4 features.
- */
- if (prot_version < SCSI_REV_2)
- trans_version = SID_ANSI_REV(sid);
- else
- trans_version = SCSI_REV_2;
-
- if ((sid->flags & SID_WBus16) == 0)
- width = MSG_EXT_WDTR_BUS_8_BIT;
- if ((sid->flags & SID_Sync) == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- }
- if ((sid->spi3data & SID_SPI_QAS) == 0)
- ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
- if ((sid->spi3data & SID_SPI_CLOCK_DT) == 0)
- ppr_options &= MSG_EXT_PPR_QAS_REQ;
- if ((sid->spi3data & SID_SPI_IUS) == 0)
- ppr_options &= (MSG_EXT_PPR_DT_REQ
- | MSG_EXT_PPR_QAS_REQ);
-
- if (prot_version > SCSI_REV_2
- && ppr_options != 0)
- trans_version = user->transport_version;
-
- ahd_validate_width(ahd, /*tinfo limit*/NULL, &width, ROLE_UNKNOWN);
- syncrate = ahd_find_syncrate(ahd, &period, &ppr_options, maxsync);
- ahd_validate_offset(ahd, /*tinfo limit*/NULL, syncrate,
- &offset, width, ROLE_UNKNOWN);
- if (offset == 0 || period == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- }
- /* Apply our filtered user settings. */
- curr->transport_version = trans_version;
- curr->protocol_version = prot_version;
- ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_set_syncrate(ahd, devinfo, syncrate, period, offset, ppr_options,
- AHD_TRANS_GOAL, /*paused*/FALSE);
-}
-
-static void
ahd_freeze_simq(struct ahd_softc *ahd)
{
ahd->platform_data->qfrozen++;
@@ -4579,11 +2940,6 @@ ahd_linux_release_simq(u_long arg)
ahd->platform_data->qfrozen--;
if (ahd->platform_data->qfrozen == 0)
unblock_reqs = 1;
- if (AHD_DV_SIMQ_FROZEN(ahd)
- && ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_RELEASE) != 0)) {
- ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_RELEASE;
- up(&ahd->platform_data->dv_sem);
- }
ahd_schedule_runq(ahd);
ahd_unlock(ahd, &s);
/*
@@ -4990,11 +3346,266 @@ ahd_platform_dump_card_state(struct ahd_
}
}
+static void ahd_linux_get_period(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_period(starget) = tinfo->curr.period;
+}
+
+static void ahd_linux_set_period(struct scsi_target *starget, int period)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ struct ahd_devinfo devinfo;
+ unsigned int ppr_options = tinfo->curr.ppr_options;
+ unsigned long flags;
+ unsigned long offset = tinfo->curr.offset;
+ struct ahd_syncrate *syncrate;
+
+ if (offset == 0)
+ offset = MAX_OFFSET;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ syncrate = ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_DT);
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, syncrate, period, offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_get_offset(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_offset(starget) = tinfo->curr.offset;
+}
+
+static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ struct ahd_devinfo devinfo;
+ unsigned int ppr_options = 0;
+ unsigned int period = 0;
+ unsigned long flags;
+ struct ahd_syncrate *syncrate = NULL;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ if (offset != 0) {
+ syncrate = ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_DT);
+ period = tinfo->curr.period;
+ ppr_options = tinfo->curr.ppr_options;
+ }
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, syncrate, period, offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_get_width(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_width(starget) = tinfo->curr.width;
+}
+
+static void ahd_linux_set_width(struct scsi_target *starget, int width)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_devinfo devinfo;
+ unsigned long flags;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_lock(ahd, &flags);
+ ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_get_dt(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ;
+}
+
+static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ struct ahd_devinfo devinfo;
+ unsigned int ppr_options = tinfo->curr.ppr_options
+ & ~MSG_EXT_PPR_DT_REQ;
+ unsigned int period = tinfo->curr.period;
+ unsigned long flags;
+ struct ahd_syncrate *syncrate;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ syncrate = ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_DT : AHD_SYNCRATE_ULTRA2);
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, syncrate, period, tinfo->curr.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_get_qas(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ;
+}
+
+static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ struct ahd_devinfo devinfo;
+ 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 ahd_syncrate *syncrate;
+
+ if (qas)
+ ppr_options |= MSG_EXT_PPR_QAS_REQ;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ syncrate = ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_DT : AHD_SYNCRATE_ULTRA2);
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, syncrate, period, tinfo->curr.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_get_iu(struct scsi_target *starget)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ;
+}
+
+static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
+{
+ struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+ struct ahd_tmode_tstate *tstate;
+ struct ahd_initiator_tinfo *tinfo
+ = ahd_fetch_transinfo(ahd,
+ starget->channel + 'A',
+ shost->this_id, starget->id, &tstate);
+ struct ahd_devinfo devinfo;
+ 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 ahd_syncrate *syncrate;
+
+ if (iu)
+ ppr_options |= MSG_EXT_PPR_IU_REQ;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ syncrate = ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_DT : AHD_SYNCRATE_ULTRA2);
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, syncrate, period, tinfo->curr.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static struct spi_function_template ahd_linux_transport_functions = {
+ .get_offset = ahd_linux_get_offset,
+ .set_offset = ahd_linux_set_offset,
+ .show_offset = 1,
+ .get_period = ahd_linux_get_period,
+ .set_period = ahd_linux_set_period,
+ .show_period = 1,
+ .get_width = ahd_linux_get_width,
+ .set_width = ahd_linux_set_width,
+ .show_width = 1,
+ .get_dt = ahd_linux_get_dt,
+ .set_dt = ahd_linux_set_dt,
+ .show_dt = 1,
+ .get_iu = ahd_linux_get_iu,
+ .set_iu = ahd_linux_set_iu,
+ .show_iu = 1,
+ .get_qas = ahd_linux_get_qas,
+ .set_qas = ahd_linux_set_qas,
+ .show_qas = 1,
+};
+
+
+
static int __init
ahd_linux_init(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- return ahd_linux_detect(&aic79xx_driver_template);
+ ahd_linux_transport_template = spi_attach_transport(&ahd_linux_transport_functions);
+ if (!ahd_linux_transport_template)
+ return -ENODEV;
+ if (ahd_linux_detect(&aic79xx_driver_template))
+ return 0;
+ spi_release_transport(ahd_linux_transport_template);
#else
scsi_register_module(MODULE_SCSI_HA, &aic79xx_driver_template);
if (aic79xx_driver_template.present == 0) {
@@ -5014,19 +3623,6 @@ ahd_linux_init(void)
static void
ahd_linux_exit(void)
{
- struct ahd_softc *ahd;
-
- /*
- * Shutdown DV threads before going into the SCSI mid-layer.
- * This avoids situations where the mid-layer locks the entire
- * kernel so that waiting for our DV threads to exit leads
- * to deadlock.
- */
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
-
- ahd_linux_kill_dv_thread(ahd);
- }
-
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* In 2.4 we have to unregister from the PCI core _after_
@@ -5037,6 +3633,7 @@ ahd_linux_exit(void)
scsi_unregister_module(MODULE_SCSI_HA, &aic79xx_driver_template);
#endif
ahd_linux_pci_exit();
+ spi_release_transport(ahd_linux_transport_template);
}
module_init(ahd_linux_init);
