#include "aic79xx_inline.h"
#include <scsi/scsicam.h>
-/*
- * Include aiclib.c as part of our
- * "module dependencies are hard" work around.
- */
-#include "aiclib.c"
+static struct scsi_transport_template *ahd_linux_transport_template = NULL;
#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 */
-
-/*
- * Lock protecting manipulation of the ahd softc list.
- */
-spinlock_t ahd_list_spinlock;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/* For dynamic sglist size calculation. */
-u_int ahd_linux_nseg;
-#endif
+#include <linux/device.h>
/*
* Bucket size for counting good commands in between bad ones.
{AIC79XX_CONFIGED_TAG_COMMANDS}
};
-/*
- * By default, read streaming is disabled. In theory,
- * read streaming should enhance performance, but early
- * U320 drive firmware actually performs slower with
- * read streaming enabled.
- */
-#ifdef CONFIG_AIC79XX_ENABLE_RD_STRM
-#define AIC79XX_CONFIGED_RD_STRM 0xFFFF
-#else
-#define AIC79XX_CONFIGED_RD_STRM 0
-#endif
-
-static uint16_t aic79xx_rd_strm_info[] =
-{
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM
-};
-
-/*
- * 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
*/
uint32_t aic79xx_allow_memio = ~0;
-/*
- * aic79xx_detect() has been run, so register all device arrivals
- * immediately with the system rather than deferring to the sorted
- * attachment performed by aic79xx_detect().
- */
-int aic79xx_detect_complete;
-
/*
* So that we can set how long each device is given as a selection timeout.
* The table of values goes like this:
*/
uint32_t aic79xx_periodic_otag;
+/* Some storage boxes are using an LSI chip which has a bug making it
+ * impossible to use aic79xx Rev B chip in 320 speeds. The following
+ * storage boxes have been reported to be buggy:
+ * EonStor 3U 16-Bay: U16U-G3A3
+ * EonStor 2U 12-Bay: U12U-G3A3
+ * SentinelRAID: 2500F R5 / R6
+ * SentinelRAID: 2500F R1
+ * SentinelRAID: 2500F/1500F
+ * SentinelRAID: 150F
+ *
+ * To get around this LSI bug, you can set your board to 160 mode
+ * or you can enable the SLOWCRC bit.
+ */
+uint32_t aic79xx_slowcrc;
+
/*
* Module information and settable options.
*/
MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(AIC79XX_DRIVER_VERSION);
-module_param(aic79xx, charp, 0);
+module_param(aic79xx, charp, 0444);
MODULE_PARM_DESC(aic79xx,
"period delimited, options string.\n"
" verbose Enable verbose/diagnostic logging\n"
" reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
" tag_info:<tag_str> Set per-target tag depth\n"
" global_tag_depth:<int> Global tag depth for all targets on all buses\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"
" seltime:<int> Selection Timeout:\n"
" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
+" slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
"\n"
" Sample /etc/modprobe.conf line:\n"
" Enable verbose logging\n"
" Shorten the selection timeout to 128ms\n"
"\n"
" options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
-"\n"
-" Sample /etc/modprobe.conf line:\n"
-" Change Read Streaming for Controller's 2 and 3\n"
-"\n"
-" options aic79xx 'aic79xx=rd_strm:{..0xFFF0.0xC0F0}'");
+"\n");
static void ahd_linux_handle_scsi_status(struct ahd_softc *,
- struct ahd_linux_device *,
+ struct scsi_device *,
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 *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dev_timed_unfreeze(u_long arg);
-static void ahd_linux_sem_timeout(u_long arg);
+ struct scsi_cmnd *cmd);
+static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *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 int ahd_linux_fallback(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static __inline int ahd_linux_dv_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_setup_user_rd_strm_settings(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*,
- u_int, u_int);
-static void ahd_linux_free_target(struct ahd_softc*,
- struct ahd_linux_target*);
-static struct ahd_linux_device* ahd_linux_alloc_device(struct ahd_softc*,
- struct ahd_linux_target*,
- u_int);
-static void ahd_linux_free_device(struct ahd_softc*,
- struct ahd_linux_device*);
-static void ahd_linux_run_device_queue(struct ahd_softc*,
- struct ahd_linux_device*);
+static void ahd_linux_device_queue_depth(struct scsi_device *);
+static int ahd_linux_run_command(struct ahd_softc*,
+ struct ahd_linux_device *,
+ struct scsi_cmnd *);
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_rd_strm_info;
-static aic_option_callback_t ahd_linux_setup_dv;
-static aic_option_callback_t ahd_linux_setup_iocell_info;
-static int ahd_linux_next_unit(void);
-static void ahd_runq_tasklet(unsigned long data);
-static int aic79xx_setup(char *c);
-
-/****************************** Inlines ***************************************/
-static __inline void ahd_schedule_completeq(struct ahd_softc *ahd);
-static __inline void ahd_schedule_runq(struct ahd_softc *ahd);
-static __inline void ahd_setup_runq_tasklet(struct ahd_softc *ahd);
-static __inline void ahd_teardown_runq_tasklet(struct ahd_softc *ahd);
-static __inline struct ahd_linux_device*
- ahd_linux_get_device(struct ahd_softc *ahd, u_int channel,
- u_int target, u_int lun, int alloc);
-static struct ahd_cmd *ahd_linux_run_complete_queue(struct ahd_softc *ahd);
-static __inline void ahd_linux_check_device_queue(struct ahd_softc *ahd,
- struct ahd_linux_device *dev);
-static __inline struct ahd_linux_device *
- ahd_linux_next_device_to_run(struct ahd_softc *ahd);
-static __inline void ahd_linux_run_device_queues(struct ahd_softc *ahd);
-static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
-
-static __inline void
-ahd_schedule_completeq(struct ahd_softc *ahd)
-{
- if ((ahd->platform_data->flags & AHD_RUN_CMPLT_Q_TIMER) == 0) {
- ahd->platform_data->flags |= AHD_RUN_CMPLT_Q_TIMER;
- ahd->platform_data->completeq_timer.expires = jiffies;
- add_timer(&ahd->platform_data->completeq_timer);
- }
-}
-
-/*
- * Must be called with our lock held.
- */
-static __inline void
-ahd_schedule_runq(struct ahd_softc *ahd)
-{
- tasklet_schedule(&ahd->platform_data->runq_tasklet);
-}
-
-static __inline
-void ahd_setup_runq_tasklet(struct ahd_softc *ahd)
-{
- tasklet_init(&ahd->platform_data->runq_tasklet, ahd_runq_tasklet,
- (unsigned long)ahd);
-}
-
-static __inline void
-ahd_teardown_runq_tasklet(struct ahd_softc *ahd)
-{
- tasklet_kill(&ahd->platform_data->runq_tasklet);
-}
-
-static __inline struct ahd_linux_device*
-ahd_linux_get_device(struct ahd_softc *ahd, u_int channel, u_int target,
- u_int lun, int alloc)
-{
- struct ahd_linux_target *targ;
- struct ahd_linux_device *dev;
- u_int target_offset;
-
- target_offset = target;
- if (channel != 0)
- target_offset += 8;
- targ = ahd->platform_data->targets[target_offset];
- if (targ == NULL) {
- if (alloc != 0) {
- targ = ahd_linux_alloc_target(ahd, channel, target);
- if (targ == NULL)
- return (NULL);
- } else
- return (NULL);
- }
- dev = targ->devices[lun];
- if (dev == NULL && alloc != 0)
- dev = ahd_linux_alloc_device(ahd, targ, lun);
- return (dev);
-}
-
-#define AHD_LINUX_MAX_RETURNED_ERRORS 4
-static struct ahd_cmd *
-ahd_linux_run_complete_queue(struct ahd_softc *ahd)
-{
- struct ahd_cmd *acmd;
- u_long done_flags;
- int with_errors;
-
- with_errors = 0;
- ahd_done_lock(ahd, &done_flags);
- while ((acmd = TAILQ_FIRST(&ahd->platform_data->completeq)) != NULL) {
- Scsi_Cmnd *cmd;
-
- if (with_errors > AHD_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"
- */
- ahd_schedule_completeq(ahd);
- break;
- }
- TAILQ_REMOVE(&ahd->platform_data->completeq,
- acmd, acmd_links.tqe);
- cmd = &acmd_scsi_cmd(acmd);
- cmd->host_scribble = NULL;
- if (ahd_cmd_get_transaction_status(cmd) != DID_OK
- || (cmd->result & 0xFF) != SCSI_STATUS_OK)
- with_errors++;
-
- cmd->scsi_done(cmd);
- }
- ahd_done_unlock(ahd, &done_flags);
- return (acmd);
-}
-
-static __inline void
-ahd_linux_check_device_queue(struct ahd_softc *ahd,
- struct ahd_linux_device *dev)
-{
- if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) != 0
- && dev->active == 0) {
- dev->flags &= ~AHD_DEV_FREEZE_TIL_EMPTY;
- dev->qfrozen--;
- }
+static int aic79xx_setup(char *c);
- if (TAILQ_FIRST(&dev->busyq) == NULL
- || dev->openings == 0 || dev->qfrozen != 0)
- return;
-
- ahd_linux_run_device_queue(ahd, dev);
-}
-
-static __inline struct ahd_linux_device *
-ahd_linux_next_device_to_run(struct ahd_softc *ahd)
-{
-
- if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0
- || (ahd->platform_data->qfrozen != 0
- && AHD_DV_SIMQ_FROZEN(ahd) == 0))
- return (NULL);
- return (TAILQ_FIRST(&ahd->platform_data->device_runq));
-}
+static int ahd_linux_unit;
-static __inline void
-ahd_linux_run_device_queues(struct ahd_softc *ahd)
-{
- struct ahd_linux_device *dev;
- while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) {
- TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links);
- dev->flags &= ~AHD_DEV_ON_RUN_LIST;
- ahd_linux_check_device_queue(ahd, dev);
- }
-}
+/****************************** Inlines ***************************************/
+static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
static __inline void
ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
int direction;
cmd = scb->io_ctx;
/******************************** Macros **************************************/
#define BUILD_SCSIID(ahd, cmd) \
- ((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
-
-/************************ Host template entry points *************************/
-static int ahd_linux_detect(Scsi_Host_Template *);
-static const char *ahd_linux_info(struct Scsi_Host *);
-static int ahd_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-static int ahd_linux_slave_alloc(Scsi_Device *);
-static int ahd_linux_slave_configure(Scsi_Device *);
-static void ahd_linux_slave_destroy(Scsi_Device *);
-#if defined(__i386__)
-static int ahd_linux_biosparam(struct scsi_device*,
- struct block_device*, sector_t, int[]);
-#endif
-#else
-static int ahd_linux_release(struct Scsi_Host *);
-static void ahd_linux_select_queue_depth(struct Scsi_Host *host,
- Scsi_Device *scsi_devs);
-#if defined(__i386__)
-static int ahd_linux_biosparam(Disk *, kdev_t, int[]);
-#endif
-#endif
-static int ahd_linux_bus_reset(Scsi_Cmnd *);
-static int ahd_linux_dev_reset(Scsi_Cmnd *);
-static int ahd_linux_abort(Scsi_Cmnd *);
-
-/*
- * Calculate a safe value for AHD_NSEG (as expressed through ahd_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 SG 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
-ahd_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 < AHD_LINUX_MIN_NSEG)
- continue;
-
- if (best_size == 0) {
- best_size = cur_size;
- ahd_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;
- ahd_linux_nseg = nseg;
- }
- }
- }
-#endif
-}
-
-/*
- * Try to detect an Adaptec 79XX controller.
- */
-static int
-ahd_linux_detect(Scsi_Host_Template *template)
-{
- struct ahd_softc *ahd;
- int found;
- int error = 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
- * violated.
- */
- if (offsetof(struct ahd_cmd_internal, end)
- > offsetof(struct scsi_cmnd, host_scribble)) {
- printf("ahd_linux_detect: SCSI data structures changed.\n");
- printf("ahd_linux_detect: Unable to attach\n");
- return (0);
- }
- /*
- * Determine an appropriate size for our Scatter Gatther lists.
- */
- ahd_linux_size_nseg();
-#ifdef MODULE
- /*
- * If we've been passed any parameters, process them now.
- */
- if (aic79xx)
- aic79xx_setup(aic79xx);
-#endif
-
- template->proc_name = "aic79xx";
-
- /*
- * Initialize our softc list lock prior to
- * probing for any adapters.
- */
- ahd_list_lockinit();
-
-#ifdef CONFIG_PCI
- error = ahd_linux_pci_init();
- if (error)
- return error;
-#endif
-
- /*
- * Register with the SCSI layer all
- * controllers we've found.
- */
- found = 0;
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
-
- if (ahd_linux_register_host(ahd, template) == 0)
- found++;
- }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
- aic79xx_detect_complete++;
- return 0;
-}
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-/*
- * Free the passed in Scsi_Host memory structures prior to unloading the
- * module.
- */
-static int
-ahd_linux_release(struct Scsi_Host * host)
-{
- struct ahd_softc *ahd;
- u_long l;
-
- ahd_list_lock(&l);
- if (host != NULL) {
-
- /*
- * We should be able to just perform
- * the free directly, but check our
- * list for extra sanity.
- */
- ahd = ahd_find_softc(*(struct ahd_softc **)host->hostdata);
- if (ahd != NULL) {
- u_long s;
-
- ahd_lock(ahd, &s);
- ahd_intr_enable(ahd, FALSE);
- ahd_unlock(ahd, &s);
- ahd_free(ahd);
- }
- }
- ahd_list_unlock(&l);
- return (0);
-}
-#endif
+ (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
/*
* Return a string describing the driver.
* Queue an SCB to the controller.
*/
static int
-ahd_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
+ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
{
struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
+ struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
+ int rtn = SCSI_MLQUEUE_HOST_BUSY;
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
- /*
- * Save the callback on completion function.
- */
cmd->scsi_done = scsi_done;
+ cmd->result = CAM_REQ_INPROG << 16;
+ rtn = ahd_linux_run_command(ahd, dev, cmd);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
+ return rtn;
+}
- /*
- * 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 (ahd->platform_data->qfrozen != 0
- && AHD_DV_CMD(cmd) == 0) {
-
- ahd_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
- ahd_linux_queue_cmd_complete(ahd, cmd);
- ahd_schedule_completeq(ahd);
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- return (0);
- }
- dev = ahd_linux_get_device(ahd, cmd->device->channel,
- cmd->device->id, cmd->device->lun,
- /*alloc*/TRUE);
- if (dev == NULL) {
- ahd_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL);
- ahd_linux_queue_cmd_complete(ahd, cmd);
- ahd_schedule_completeq(ahd);
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- printf("%s: aic79xx_linux_queue - Unable to allocate device!\n",
- ahd_name(ahd));
- return (0);
- }
- if (cmd->cmd_len > MAX_CDB_LEN)
- return (-EINVAL);
- cmd->result = CAM_REQ_INPROG << 16;
- TAILQ_INSERT_TAIL(&dev->busyq, (struct ahd_cmd *)cmd, acmd_links.tqe);
- if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- ahd_linux_run_device_queues(ahd);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- return (0);
+static inline struct scsi_target **
+ahd_linux_target_in_softc(struct scsi_target *starget)
+{
+ struct ahd_softc *ahd =
+ *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
+ unsigned int target_offset;
+
+ target_offset = starget->id;
+ if (starget->channel != 0)
+ target_offset += 8;
+
+ return &ahd->platform_data->starget[target_offset];
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
-ahd_linux_slave_alloc(Scsi_Device *device)
+ahd_linux_target_alloc(struct scsi_target *starget)
+{
+ struct ahd_softc *ahd =
+ *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
+ struct seeprom_config *sc = ahd->seep_config;
+ unsigned long flags;
+ struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
+ struct ahd_linux_target *targ = scsi_transport_target_data(starget);
+ struct ahd_devinfo devinfo;
+ struct ahd_initiator_tinfo *tinfo;
+ struct ahd_tmode_tstate *tstate;
+ char channel = starget->channel + 'A';
+
+ ahd_lock(ahd, &flags);
+
+ BUG_ON(*ahd_targp != NULL);
+
+ *ahd_targp = starget;
+ memset(targ, 0, sizeof(*targ));
+
+ if (sc) {
+ int flags = sc->device_flags[starget->id];
+
+ tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
+ starget->id, &tstate);
+
+ if ((flags & CFPACKETIZED) == 0) {
+ /* Do not negotiate packetized transfers */
+ spi_rd_strm(starget) = 0;
+ spi_pcomp_en(starget) = 0;
+ spi_rti(starget) = 0;
+ spi_wr_flow(starget) = 0;
+ spi_hold_mcs(starget) = 0;
+ } else {
+ if ((ahd->features & AHD_RTI) == 0)
+ spi_rti(starget) = 0;
+ }
+
+ if ((flags & CFQAS) == 0)
+ spi_qas(starget) = 0;
+
+ /* Transinfo values have been set to BIOS settings */
+ spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
+ spi_min_period(starget) = tinfo->user.period;
+ spi_max_offset(starget) = tinfo->user.offset;
+ }
+
+ tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
+ starget->id, &tstate);
+ ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
+ CAM_LUN_WILDCARD, channel,
+ ROLE_INITIATOR);
+ ahd_set_syncrate(ahd, &devinfo, 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, &flags);
+
+ return 0;
+}
+
+static void
+ahd_linux_target_destroy(struct scsi_target *starget)
{
- struct ahd_softc *ahd;
+ struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
- ahd = *((struct ahd_softc **)device->host->hostdata);
- if (bootverbose)
- printf("%s: Slave Alloc %d\n", ahd_name(ahd), device->id);
- return (0);
+ *ahd_targp = NULL;
}
static int
-ahd_linux_slave_configure(Scsi_Device *device)
+ahd_linux_slave_alloc(struct scsi_device *sdev)
{
- struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
+ struct ahd_softc *ahd =
+ *((struct ahd_softc **)sdev->host->hostdata);
+ struct scsi_target *starget = sdev->sdev_target;
+ struct ahd_linux_target *targ = scsi_transport_target_data(starget);
+ struct ahd_linux_device *dev;
- ahd = *((struct ahd_softc **)device->host->hostdata);
if (bootverbose)
- printf("%s: Slave Configure %d\n", ahd_name(ahd), device->id);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
+ printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
+
+ BUG_ON(targ->sdev[sdev->lun] != NULL);
+
+ dev = scsi_transport_device_data(sdev);
+ memset(dev, 0, sizeof(*dev));
+
/*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
+ * We start out life using untagged
+ * transactions of which we allow one.
*/
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- dev->flags |= AHD_DEV_SLAVE_CONFIGURED;
- dev->scsi_device = device;
- ahd_linux_device_queue_depth(ahd, dev);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
+ dev->openings = 1;
+
+ /*
+ * Set maxtags to 0. This will be changed if we
+ * later determine that we are dealing with
+ * a tagged queuing capable device.
+ */
+ dev->maxtags = 0;
+
+ targ->sdev[sdev->lun] = sdev;
+
return (0);
}
-static void
-ahd_linux_slave_destroy(Scsi_Device *device)
+static int
+ahd_linux_slave_configure(struct scsi_device *sdev)
{
struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
- ahd = *((struct ahd_softc **)device->host->hostdata);
+ ahd = *((struct ahd_softc **)sdev->host->hostdata);
if (bootverbose)
- printf("%s: Slave Destroy %d\n", ahd_name(ahd), device->id);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/FALSE);
+ sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
- /*
- * 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 & AHD_DEV_SLAVE_CONFIGURED) != 0) {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- if (TAILQ_EMPTY(&dev->busyq)
- && dev->active == 0
- && (dev->flags & AHD_DEV_TIMER_ACTIVE) == 0)
- ahd_linux_free_device(ahd, dev);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
+ ahd_linux_device_queue_depth(sdev);
+
+ /* Initial Domain Validation */
+ if (!spi_initial_dv(sdev->sdev_target))
+ spi_dv_device(sdev);
+
+ return 0;
}
-#else
-/*
- * Sets the queue depth for each SCSI device hanging
- * off the input host adapter.
- */
+
static void
-ahd_linux_select_queue_depth(struct Scsi_Host * host,
- Scsi_Device * scsi_devs)
+ahd_linux_slave_destroy(struct scsi_device *sdev)
{
- Scsi_Device *device;
- Scsi_Device *ldev;
struct ahd_softc *ahd;
- u_long flags;
+ struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
+ struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target);
- ahd = *((struct ahd_softc **)host->hostdata);
- ahd_lock(ahd, &flags);
- for (device = scsi_devs; device != NULL; device = device->next) {
+ ahd = *((struct ahd_softc **)sdev->host->hostdata);
+ if (bootverbose)
+ printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id);
- /*
- * 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;
+ BUG_ON(dev->active);
- if (device->host == host) {
- struct ahd_linux_device *dev;
+ targ->sdev[sdev->lun] = NULL;
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahd_linux_device_queue_depth(ahd, dev);
- device->queue_depth = dev->openings
- + dev->active;
- if ((dev->flags & (AHD_DEV_Q_BASIC
- | AHD_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;
- }
- }
- }
- }
- ahd_unlock(ahd, &flags);
}
-#endif
#if defined(__i386__)
/*
* Return the disk geometry for the given SCSI device.
*/
static int
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
uint8_t *bh;
-#else
-ahd_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;
ahd = *((struct ahd_softc **)sdev->host->hostdata);
-#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);
}
* Abort the current SCSI command(s).
*/
static int
-ahd_linux_abort(Scsi_Cmnd *cmd)
+ahd_linux_abort(struct scsi_cmnd *cmd)
+{
+ int error;
+
+ error = ahd_linux_queue_abort_cmd(cmd);
+
+ return error;
+}
+
+/*
+ * Attempt to send a target reset message to the device that timed out.
+ */
+static int
+ahd_linux_dev_reset(struct scsi_cmnd *cmd)
{
struct ahd_softc *ahd;
- struct ahd_cmd *acmd;
- struct ahd_cmd *list_acmd;
struct ahd_linux_device *dev;
- struct scb *pending_scb;
- u_long s;
- u_int saved_scbptr;
- u_int active_scbptr;
- u_int last_phase;
+ struct scb *reset_scb;
u_int cdb_byte;
- int retval;
- int was_paused;
+ int retval = SUCCESS;
int paused;
int wait;
- int disconnected;
- ahd_mode_state saved_modes;
+ struct ahd_initiator_tinfo *tinfo;
+ struct ahd_tmode_tstate *tstate;
+ unsigned long flags;
+ DECLARE_COMPLETION(done);
- pending_scb = NULL;
+ reset_scb = NULL;
paused = FALSE;
wait = FALSE;
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
- acmd = (struct ahd_cmd *)cmd;
- printf("%s:%d:%d:%d: Attempting to abort cmd %p:",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun, cmd);
+ scmd_printk(KERN_INFO, cmd,
+ "Attempting to queue a TARGET RESET message:");
+
+ printf("CDB:");
for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
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.
- */
- ahd_midlayer_entrypoint_lock(ahd, &s);
-
- /*
- * First determine if we currently own this command.
- * Start by searching the device queue. If not found
- * there, check the pending_scb list. If not found
- * at all, and the system wanted us to just abort the
- * command, return success.
+ * Determine if we currently own this command.
*/
- dev = ahd_linux_get_device(ahd, cmd->device->channel,
- cmd->device->id, cmd->device->lun,
- /*alloc*/FALSE);
+ dev = scsi_transport_device_data(cmd->device);
if (dev == NULL) {
/*
* No target device for this command exists,
* so we must not still own the command.
*/
- printf("%s:%d:%d:%d: Is not an active device\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- retval = SUCCESS;
- 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",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
- cmd->result = DID_ABORT << 16;
- ahd_linux_queue_cmd_complete(ahd, cmd);
- retval = SUCCESS;
- goto done;
- }
-
- /*
- * See if we can find a matching cmd in the pending list.
- */
- LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
- if (pending_scb->io_ctx == cmd)
- break;
- }
-
- if (pending_scb == NULL) {
- printf("%s:%d:%d:%d: Command not found\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- goto no_cmd;
- }
-
- if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
- /*
- * We can't queue two recovery actions using the same SCB
- */
- retval = FAILED;
- goto done;
+ scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
+ return SUCCESS;
}
/*
- * Ensure that the card doesn't do anything
- * behind our back. Also make sure that we
- * didn't "just" miss an interrupt that would
- * affect this cmd.
+ * Generate us a new SCB
*/
- was_paused = ahd_is_paused(ahd);
- ahd_pause_and_flushwork(ahd);
- paused = TRUE;
-
- if ((pending_scb->flags & SCB_ACTIVE) == 0) {
- printf("%s:%d:%d:%d: Command already completed\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- goto no_cmd;
- }
-
- printf("%s: At time of recovery, card was %spaused\n",
- ahd_name(ahd), was_paused ? "" : "not ");
- ahd_dump_card_state(ahd);
-
- disconnected = TRUE;
- if (ahd_search_qinfifo(ahd, cmd->device->id, cmd->device->channel + 'A',
- cmd->device->lun, SCB_GET_TAG(pending_scb),
- ROLE_INITIATOR, CAM_REQ_ABORTED,
- SEARCH_COMPLETE) > 0) {
- printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- retval = SUCCESS;
- goto done;
+ reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
+ if (!reset_scb) {
+ scmd_printk(KERN_INFO, cmd, "No SCB available\n");
+ return FAILED;
}
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- last_phase = ahd_inb(ahd, LASTPHASE);
- saved_scbptr = ahd_get_scbptr(ahd);
- active_scbptr = saved_scbptr;
- if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
- struct scb *bus_scb;
-
- bus_scb = ahd_lookup_scb(ahd, active_scbptr);
- if (bus_scb == pending_scb)
- disconnected = FALSE;
+ tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
+ cmd->device->id, &tstate);
+ reset_scb->io_ctx = cmd;
+ reset_scb->platform_data->dev = dev;
+ reset_scb->sg_count = 0;
+ ahd_set_residual(reset_scb, 0);
+ ahd_set_sense_residual(reset_scb, 0);
+ reset_scb->platform_data->xfer_len = 0;
+ reset_scb->hscb->control = 0;
+ reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
+ reset_scb->hscb->lun = cmd->device->lun;
+ reset_scb->hscb->cdb_len = 0;
+ reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
+ reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
+ if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
+ reset_scb->flags |= SCB_PACKETIZED;
+ } else {
+ reset_scb->hscb->control |= MK_MESSAGE;
}
+ dev->openings--;
+ dev->active++;
+ dev->commands_issued++;
- /*
- * At this point, pending_scb is the scb associated with the
- * passed in command. That command is currently active on the
- * bus or is in the disconnected state.
- */
- if (last_phase != P_BUSFREE
- && SCB_GET_TAG(pending_scb) == active_scbptr) {
-
- /*
- * We're active on the bus, so assert ATN
- * and hope that the target responds.
- */
- pending_scb = ahd_lookup_scb(ahd, active_scbptr);
- pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
- printf("%s:%d:%d:%d: Device is active, asserting ATN\n",
- ahd_name(ahd), cmd->device->channel,
- cmd->device->id, cmd->device->lun);
- wait = TRUE;
- } else if (disconnected) {
-
- /*
- * Actually re-queue this SCB in an attempt
- * to select the device before it reconnects.
- */
- pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
- ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
- pending_scb->hscb->cdb_len = 0;
- pending_scb->hscb->task_attribute = 0;
- pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
+ ahd_lock(ahd, &flags);
- if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
- /*
- * Mark the SCB has having an outstanding
- * task management function. Should the command
- * complete normally before the task management
- * function can be sent, the host will be notified
- * to abort our requeued SCB.
- */
- ahd_outb(ahd, SCB_TASK_MANAGEMENT,
- pending_scb->hscb->task_management);
- } else {
- /*
- * If non-packetized, set the MK_MESSAGE control
- * bit indicating that we desire to send a message.
- * We also set the disconnected flag since there is
- * no guarantee that our SCB control byte matches
- * the version on the card. We don't want the
- * sequencer to abort the command thinking an
- * unsolicited reselection occurred.
- */
- pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
+ LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
+ ahd_queue_scb(ahd, reset_scb);
- /*
- * The sequencer will never re-reference the
- * in-core SCB. To make sure we are notified
- * during reslection, set the MK_MESSAGE flag in
- * the card's copy of the SCB.
- */
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
- }
+ ahd->platform_data->eh_done = &done;
+ ahd_unlock(ahd, &flags);
- /*
- * Clear out any entries in the QINFIFO first
- * so we are the next SCB for this target
- * to run.
- */
- ahd_search_qinfifo(ahd, cmd->device->id,
- cmd->device->channel + 'A', cmd->device->lun,
- SCB_LIST_NULL, ROLE_INITIATOR,
- CAM_REQUEUE_REQ, SEARCH_COMPLETE);
- ahd_qinfifo_requeue_tail(ahd, pending_scb);
- ahd_set_scbptr(ahd, saved_scbptr);
- ahd_print_path(ahd, pending_scb);
- printf("Device is disconnected, re-queuing SCB\n");
- wait = TRUE;
- } else {
- printf("%s:%d:%d:%d: Unable to deliver message\n",
- ahd_name(ahd), cmd->device->channel,
- cmd->device->id, cmd->device->lun);
+ printf("%s: Device reset code sleeping\n", ahd_name(ahd));
+ if (!wait_for_completion_timeout(&done, 5 * HZ)) {
+ ahd_lock(ahd, &flags);
+ ahd->platform_data->eh_done = NULL;
+ ahd_unlock(ahd, &flags);
+ printf("%s: Device reset timer expired (active %d)\n",
+ ahd_name(ahd), dev->active);
retval = FAILED;
- goto done;
}
+ printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
-no_cmd:
- /*
- * Our assumption is that if we don't have the command, no
- * recovery action was required, so we return success. Again,
- * the semantics of the mid-layer recovery engine are not
- * well defined, so this may change in time.
- */
- retval = SUCCESS;
-done:
- if (paused)
- ahd_unpause(ahd);
- if (wait) {
- struct timer_list timer;
- int ret;
-
- pending_scb->platform_data->flags |= AHD_SCB_UP_EH_SEM;
- spin_unlock_irq(&ahd->platform_data->spin_lock);
- init_timer(&timer);
- timer.data = (u_long)pending_scb;
- timer.expires = jiffies + (5 * HZ);
- timer.function = ahd_linux_sem_timeout;
- add_timer(&timer);
- printf("Recovery code sleeping\n");
- down(&ahd->platform_data->eh_sem);
- printf("Recovery code awake\n");
- ret = del_timer_sync(&timer);
- if (ret == 0) {
- printf("Timer Expired\n");
- retval = FAILED;
- }
- spin_lock_irq(&ahd->platform_data->spin_lock);
- }
- ahd_schedule_runq(ahd);
- ahd_linux_run_complete_queue(ahd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
return (retval);
}
-
-static void
-ahd_linux_dev_reset_complete(Scsi_Cmnd *cmd)
-{
- free(cmd, M_DEVBUF);
-}
-
/*
- * Attempt to send a target reset message to the device that timed out.
+ * Reset the SCSI bus.
*/
static int
-ahd_linux_dev_reset(Scsi_Cmnd *cmd)
+ahd_linux_bus_reset(struct scsi_cmnd *cmd)
{
- struct ahd_softc *ahd;
- struct scsi_cmnd *recovery_cmd;
- struct ahd_linux_device *dev;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- struct scb *scb;
- struct hardware_scb *hscb;
- u_long s;
- struct timer_list timer;
- int retval;
+ struct ahd_softc *ahd;
+ int found;
+ unsigned long flags;
ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
- recovery_cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK);
- if (!recovery_cmd)
- return (FAILED);
- memset(recovery_cmd, 0, sizeof(struct scsi_cmnd));
- recovery_cmd->device = cmd->device;
- recovery_cmd->scsi_done = ahd_linux_dev_reset_complete;
-#if AHD_DEBUG
+#ifdef AHD_DEBUG
if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s:%d:%d:%d: Device reset called for cmd %p\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun, cmd);
+ printf("%s: Bus reset called for cmd %p\n",
+ ahd_name(ahd), cmd);
#endif
- ahd_midlayer_entrypoint_lock(ahd, &s);
+ ahd_lock(ahd, &flags);
- dev = ahd_linux_get_device(ahd, cmd->device->channel, cmd->device->id,
- cmd->device->lun, /*alloc*/FALSE);
- if (dev == NULL) {
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- kfree(recovery_cmd);
- return (FAILED);
- }
- if ((scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX)) == NULL) {
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- kfree(recovery_cmd);
- return (FAILED);
- }
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- cmd->device->id, &tstate);
- recovery_cmd->result = CAM_REQ_INPROG << 16;
- recovery_cmd->host_scribble = (char *)scb;
- scb->io_ctx = recovery_cmd;
- scb->platform_data->dev = dev;
- scb->sg_count = 0;
- ahd_set_residual(scb, 0);
- ahd_set_sense_residual(scb, 0);
- hscb = scb->hscb;
- hscb->control = 0;
- hscb->scsiid = BUILD_SCSIID(ahd, cmd);
- hscb->lun = cmd->device->lun;
- hscb->cdb_len = 0;
- hscb->task_management = SIU_TASKMGMT_LUN_RESET;
- scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
- if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- scb->flags |= SCB_PACKETIZED;
- } else {
- hscb->control |= MK_MESSAGE;
- }
- dev->openings--;
- dev->active++;
- dev->commands_issued++;
- LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
- ahd_queue_scb(ahd, scb);
-
- scb->platform_data->flags |= AHD_SCB_UP_EH_SEM;
- spin_unlock_irq(&ahd->platform_data->spin_lock);
- init_timer(&timer);
- timer.data = (u_long)scb;
- timer.expires = jiffies + (5 * HZ);
- timer.function = ahd_linux_sem_timeout;
- add_timer(&timer);
- printf("Recovery code sleeping\n");
- down(&ahd->platform_data->eh_sem);
- printf("Recovery code awake\n");
- retval = SUCCESS;
- if (del_timer_sync(&timer) == 0) {
- printf("Timer Expired\n");
- retval = FAILED;
- }
- spin_lock_irq(&ahd->platform_data->spin_lock);
- ahd_schedule_runq(ahd);
- ahd_linux_run_complete_queue(ahd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
- return (retval);
-}
-
-/*
- * Reset the SCSI bus.
- */
-static int
-ahd_linux_bus_reset(Scsi_Cmnd *cmd)
-{
- struct ahd_softc *ahd;
- u_long s;
- int found;
-
- ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s: Bus reset called for cmd %p\n",
- ahd_name(ahd), cmd);
-#endif
- ahd_midlayer_entrypoint_lock(ahd, &s);
- found = ahd_reset_channel(ahd, cmd->device->channel + 'A',
+ found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
/*initiate reset*/TRUE);
- ahd_linux_run_complete_queue(ahd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
+ ahd_unlock(ahd, &flags);
if (bootverbose)
printf("%s: SCSI bus reset delivered. "
return (SUCCESS);
}
-Scsi_Host_Template aic79xx_driver_template = {
+struct scsi_host_template aic79xx_driver_template = {
.module = THIS_MODULE,
.name = "aic79xx",
+ .proc_name = "aic79xx",
.proc_info = ahd_linux_proc_info,
.info = ahd_linux_info,
.queuecommand = ahd_linux_queue,
.slave_alloc = ahd_linux_slave_alloc,
.slave_configure = ahd_linux_slave_configure,
.slave_destroy = ahd_linux_slave_destroy,
+ .target_alloc = ahd_linux_target_alloc,
+ .target_destroy = ahd_linux_target_destroy,
};
-/**************************** 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, ahd_schedule_runq() calls this routine
- * directly and ahd_schedule_runq() is called with our lock held.
- */
-static void
-ahd_runq_tasklet(unsigned long data)
-{
- struct ahd_softc* ahd;
- struct ahd_linux_device *dev;
- u_long flags;
-
- ahd = (struct ahd_softc *)data;
- ahd_lock(ahd, &flags);
- while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) {
-
- TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links);
- dev->flags &= ~AHD_DEV_ON_RUN_LIST;
- ahd_linux_check_device_queue(ahd, dev);
- /* Yeild to our interrupt handler */
- ahd_unlock(ahd, &flags);
- ahd_lock(ahd, &flags);
- }
- ahd_unlock(ahd, &flags);
-}
-
/******************************** Bus DMA *************************************/
int
ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
ahd_dmamem_alloc(struct ahd_softc *ahd, 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 (ahd->dev_softc != NULL)
- if (pci_set_dma_mask(ahd->dev_softc, 0xFFFFFFFF)) {
- printk(KERN_WARNING "aic79xx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
*vaddr = pci_alloc_consistent(ahd->dev_softc,
- dmat->maxsize, &map->bus_addr);
- if (ahd->dev_softc != NULL)
- if (pci_set_dma_mask(ahd->dev_softc,
- ahd->platform_data->hw_dma_mask)) {
- printk(KERN_WARNING "aic79xx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
+ dmat->maxsize, mapp);
if (*vaddr == NULL)
return (ENOMEM);
- *mapp = map;
return(0);
}
void* vaddr, bus_dmamap_t map)
{
pci_free_consistent(ahd->dev_softc, dmat->maxsize,
- vaddr, map->bus_addr);
+ vaddr, map);
}
int
*/
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);
void
ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
{
- /*
- * The map may is NULL in our < 2.3.X implementation.
- */
- if (map != NULL)
- free(map, M_DEVBUF);
}
int
}
/********************* Platform Dependent Functions ***************************/
-/*
- * Compare "left hand" softc with "right hand" softc, returning:
- * < 0 - lahd has a lower priority than rahd
- * 0 - Softcs are equal
- * > 0 - lahd has a higher priority than rahd
- */
-int
-ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
-{
- int value;
-
- /*
- * Under Linux, cards are ordered as follows:
- * 1) PCI devices that are marked as the boot controller.
- * 2) PCI devices with BIOS enabled sorted by bus/slot/func.
- * 3) All remaining PCI devices sorted by bus/slot/func.
- */
-#if 0
- value = (lahd->flags & AHD_BOOT_CHANNEL)
- - (rahd->flags & AHD_BOOT_CHANNEL);
- if (value != 0)
- /* Controllers set for boot have a *higher* priority */
- return (value);
-#endif
-
- value = (lahd->flags & AHD_BIOS_ENABLED)
- - (rahd->flags & AHD_BIOS_ENABLED);
- if (value != 0)
- /* Controllers with BIOS enabled have a *higher* priority */
- return (value);
-
- /* Still equal. Sort by bus/slot/func. */
- if (aic79xx_reverse_scan != 0)
- value = ahd_get_pci_bus(lahd->dev_softc)
- - ahd_get_pci_bus(rahd->dev_softc);
- else
- value = ahd_get_pci_bus(rahd->dev_softc)
- - ahd_get_pci_bus(lahd->dev_softc);
- if (value != 0)
- return (value);
- if (aic79xx_reverse_scan != 0)
- value = ahd_get_pci_slot(lahd->dev_softc)
- - ahd_get_pci_slot(rahd->dev_softc);
- else
- value = ahd_get_pci_slot(rahd->dev_softc)
- - ahd_get_pci_slot(lahd->dev_softc);
- if (value != 0)
- return (value);
-
- value = rahd->channel - lahd->channel;
- return (value);
-}
-
-static void
-ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
-{
-
- if ((instance >= 0) && (targ >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_tag_info))
- && (targ < AHD_NUM_TARGETS)) {
- aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
- if (bootverbose)
- printf("tag_info[%d:%d] = %d\n", instance, targ, value);
- }
-}
-
-static void
-ahd_linux_setup_rd_strm_info(u_long arg, int instance, int targ, int32_t value)
-{
- if ((instance >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_rd_strm_info))) {
- aic79xx_rd_strm_info[instance] = value & 0xFFFF;
- if (bootverbose)
- printf("rd_strm[%d] = 0x%x\n", instance, value);
- }
-}
-
-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)
{
}
}
+static void
+ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
+{
+
+ if ((instance >= 0) && (targ >= 0)
+ && (instance < NUM_ELEMENTS(aic79xx_tag_info))
+ && (targ < AHD_NUM_TARGETS)) {
+ aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
+ if (bootverbose)
+ printf("tag_info[%d:%d] = %d\n", instance, targ, value);
+ }
+}
+
+static char *
+ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
+ void (*callback)(u_long, int, int, int32_t),
+ u_long callback_arg)
+{
+ char *tok_end;
+ char *tok_end2;
+ int i;
+ int instance;
+ int targ;
+ int done;
+ char tok_list[] = {'.', ',', '{', '}', '\0'};
+
+ /* All options use a ':' name/arg separator */
+ if (*opt_arg != ':')
+ return (opt_arg);
+ opt_arg++;
+ instance = -1;
+ targ = -1;
+ done = FALSE;
+ /*
+ * Restore separator that may be in
+ * the middle of our option argument.
+ */
+ tok_end = strchr(opt_arg, '\0');
+ if (tok_end < end)
+ *tok_end = ',';
+ while (!done) {
+ switch (*opt_arg) {
+ case '{':
+ if (instance == -1) {
+ instance = 0;
+ } else {
+ if (depth > 1) {
+ if (targ == -1)
+ targ = 0;
+ } else {
+ printf("Malformed Option %s\n",
+ opt_name);
+ done = TRUE;
+ }
+ }
+ opt_arg++;
+ break;
+ case '}':
+ if (targ != -1)
+ targ = -1;
+ else if (instance != -1)
+ instance = -1;
+ opt_arg++;
+ break;
+ case ',':
+ case '.':
+ if (instance == -1)
+ done = TRUE;
+ else if (targ >= 0)
+ targ++;
+ else if (instance >= 0)
+ instance++;
+ opt_arg++;
+ break;
+ case '\0':
+ done = TRUE;
+ break;
+ default:
+ tok_end = end;
+ for (i = 0; tok_list[i]; i++) {
+ tok_end2 = strchr(opt_arg, tok_list[i]);
+ if ((tok_end2) && (tok_end2 < tok_end))
+ tok_end = tok_end2;
+ }
+ callback(callback_arg, instance, targ,
+ simple_strtol(opt_arg, NULL, 0));
+ opt_arg = tok_end;
+ break;
+ }
+ }
+ return (opt_arg);
+}
+
/*
* Handle Linux boot parameters. This routine allows for assigning a value
* to a parameter with a ':' between the parameter and the value.
{ "seltime", &aic79xx_seltime },
{ "tag_info", NULL },
{ "global_tag_depth", NULL},
- { "rd_strm", NULL },
- { "dv", NULL },
{ "slewrate", NULL },
{ "precomp", NULL },
{ "amplitude", NULL },
+ { "slowcrc", &aic79xx_slowcrc },
};
end = strchr(s, '\0');
if (strncmp(p, "global_tag_depth", n) == 0) {
ahd_linux_setup_tag_info_global(p + n);
} else if (strncmp(p, "tag_info", n) == 0) {
- s = aic_parse_brace_option("tag_info", p + n, end,
+ s = ahd_parse_brace_option("tag_info", p + n, end,
2, ahd_linux_setup_tag_info, 0);
- } 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",
+ s = ahd_parse_brace_option("slewrate",
p + n, end, 1, ahd_linux_setup_iocell_info,
AIC79XX_SLEWRATE_INDEX);
} else if (strncmp(p, "precomp", n) == 0) {
- s = aic_parse_brace_option("precomp",
+ s = ahd_parse_brace_option("precomp",
p + n, end, 1, ahd_linux_setup_iocell_info,
AIC79XX_PRECOMP_INDEX);
} else if (strncmp(p, "amplitude", n) == 0) {
- s = aic_parse_brace_option("amplitude",
+ s = ahd_parse_brace_option("amplitude",
p + n, end, 1, ahd_linux_setup_iocell_info,
AIC79XX_AMPLITUDE_INDEX);
} else if (p[n] == ':') {
uint32_t aic79xx_verbose;
int
-ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template)
+ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
{
char buf[80];
struct Scsi_Host *host;
char *new_name;
u_long s;
- u_long target;
+ int retval;
template->name = ahd->description;
host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
return (ENOMEM);
*((struct ahd_softc **)host->hostdata) = ahd;
- ahd_lock(ahd, &s);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- scsi_assign_lock(host, &ahd->platform_data->spin_lock);
-#elif AHD_SCSI_HAS_HOST_LOCK != 0
- host->lock = &ahd->platform_data->spin_lock;
-#endif
ahd->platform_data->host = host;
host->can_queue = AHD_MAX_QUEUE;
host->cmd_per_lun = 2;
host->max_lun = AHD_NUM_LUNS;
host->max_channel = 0;
host->sg_tablesize = AHD_NSEG;
- ahd_set_unit(ahd, ahd_linux_next_unit());
+ ahd_lock(ahd, &s);
+ ahd_set_unit(ahd, ahd_linux_unit++);
+ ahd_unlock(ahd, &s);
sprintf(buf, "scsi%d", host->host_no);
new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
if (new_name != NULL) {
ahd_set_name(ahd, new_name);
}
host->unique_id = ahd->unit;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- scsi_set_pci_device(host, ahd->dev_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++) {
+ ahd_intr_enable(ahd, TRUE);
- /*
- * 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, ahc_linux_alloc_target() will allocate
- * for our ID if asked to do so.
- */
- if (target == ahd->our_id)
- continue;
+ host->transportt = ahd_linux_transport_template;
- ahd_linux_alloc_target(ahd, 0, target);
+ retval = scsi_add_host(host, &ahd->dev_softc->dev);
+ if (retval) {
+ printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
+ scsi_host_put(host);
+ return retval;
}
- ahd_intr_enable(ahd, TRUE);
- ahd_linux_start_dv(ahd);
- ahd_unlock(ahd, &s);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- scsi_add_host(host, &ahd->dev_softc->dev); /* XXX handle failure */
scsi_scan_host(host);
-#endif
- return (0);
+ return 0;
}
uint64_t
return ((uint64_t)si.totalram << PAGE_SHIFT);
}
-/*
- * Find the smallest available unit number to use
- * for a new device. We don't just use a static
- * count to handle the "repeated hot-(un)plug"
- * scenario.
- */
-static int
-ahd_linux_next_unit(void)
-{
- struct ahd_softc *ahd;
- int unit;
-
- unit = 0;
-retry:
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
- if (ahd->unit == unit) {
- unit++;
- goto retry;
- }
- }
- return (unit);
-}
-
/*
* Place the SCSI bus into a known state by either resetting it,
* or forcing transfer negotiations on the next command to any
{
u_int target_id;
u_int numtarg;
+ unsigned long s;
target_id = 0;
numtarg = 0;
else
numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
+ ahd_lock(ahd, &s);
+
/*
* Force negotiation to async for all targets that
* will not see an initial bus reset.
ahd_update_neg_request(ahd, &devinfo, tstate,
tinfo, AHD_NEG_ALWAYS);
}
+ ahd_unlock(ahd, &s);
/* Give the bus some time to recover */
if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
ahd_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 + (AIC79XX_RESET_DELAY * HZ)/1000;
- ahd->platform_data->reset_timer.function =
- (ahd_linux_callback_t *)ahd_release_simq;
- add_timer(&ahd->platform_data->reset_timer);
+ msleep(AIC79XX_RESET_DELAY);
+ ahd_release_simq(ahd);
}
}
if (ahd->platform_data == NULL)
return (ENOMEM);
memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
- TAILQ_INIT(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->device_runq);
ahd->platform_data->irq = AHD_LINUX_NOIRQ;
- ahd->platform_data->hw_dma_mask = 0xFFFFFFFF;
ahd_lockinit(ahd);
- ahd_done_lockinit(ahd);
- init_timer(&ahd->platform_data->completeq_timer);
- ahd->platform_data->completeq_timer.data = (u_long)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);
}
void
ahd_platform_free(struct ahd_softc *ahd)
{
- struct ahd_linux_target *targ;
- struct ahd_linux_device *dev;
+ struct scsi_target *starget;
int i, j;
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)
- scsi_remove_host(ahd->platform_data->host);
-#endif
- scsi_host_put(ahd->platform_data->host);
- }
-
/* destroy all of the device and target objects */
for (i = 0; i < AHD_NUM_TARGETS; i++) {
- targ = ahd->platform_data->targets[i];
- if (targ != NULL) {
- /* Keep target around through the loop. */
- targ->refcount++;
+ starget = ahd->platform_data->starget[i];
+ if (starget != NULL) {
for (j = 0; j < AHD_NUM_LUNS; j++) {
-
- if (targ->devices[j] == NULL)
+ struct ahd_linux_target *targ =
+ scsi_transport_target_data(starget);
+ if (targ->sdev[j] == NULL)
continue;
- dev = targ->devices[j];
- ahd_linux_free_device(ahd, dev);
+ targ->sdev[j] = NULL;
}
- /*
- * Forcibly free the target now that
- * all devices are gone.
- */
- ahd_linux_free_target(ahd, targ);
+ ahd->platform_data->starget[i] = NULL;
}
}
release_mem_region(ahd->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 (ahd->dev_softc != NULL)
- ahd->dev_softc->driver = NULL;
-#endif
+ if (ahd->platform_data->host)
+ scsi_host_put(ahd->platform_data->host);
+
free(ahd->platform_data, M_DEVBUF);
}
}
ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
ahd_queue_alg alg)
{
+ struct scsi_target *starget;
+ struct ahd_linux_target *targ;
struct ahd_linux_device *dev;
+ struct scsi_device *sdev;
int was_queuing;
int now_queuing;
- dev = ahd_linux_get_device(ahd, devinfo->channel - 'A',
- devinfo->target,
- devinfo->lun, /*alloc*/FALSE);
+ starget = ahd->platform_data->starget[devinfo->target];
+ targ = scsi_transport_target_data(starget);
+ BUG_ON(targ == NULL);
+ sdev = targ->sdev[devinfo->lun];
+ if (sdev == NULL)
+ return;
+
+ dev = scsi_transport_device_data(sdev);
+
if (dev == NULL)
return;
was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
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 & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
- case AHD_DEV_Q_BASIC:
- scsi_adjust_queue_depth(dev->scsi_device,
- MSG_SIMPLE_TASK,
- dev->openings + dev->active);
- break;
- case AHD_DEV_Q_TAGGED:
- scsi_adjust_queue_depth(dev->scsi_device,
- MSG_ORDERED_TASK,
- dev->openings + dev->active);
- break;
- default:
- /*
- * 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.
- */
- scsi_adjust_queue_depth(dev->scsi_device,
- /*NON-TAGGED*/0,
- /*queue depth*/2);
- break;
- }
+
+ switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
+ case AHD_DEV_Q_BASIC:
+ scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
+ scsi_activate_tcq(sdev, dev->openings + dev->active);
+ break;
+ case AHD_DEV_Q_TAGGED:
+ scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
+ scsi_activate_tcq(sdev, dev->openings + dev->active);
+ break;
+ default:
+ /*
+ * 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.
+ */
+ scsi_deactivate_tcq(sdev, 1);
+ break;
}
-#endif
}
int
ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
int lun, u_int tag, role_t role, uint32_t status)
{
- int targ;
- int maxtarg;
- int maxlun;
- int clun;
- int count;
-
- if (tag != SCB_LIST_NULL)
- return (0);
-
- targ = 0;
- if (target != CAM_TARGET_WILDCARD) {
- targ = target;
- maxtarg = targ + 1;
- } else {
- maxtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
- }
- clun = 0;
- if (lun != CAM_LUN_WILDCARD) {
- clun = lun;
- maxlun = clun + 1;
- } else {
- maxlun = AHD_NUM_LUNS;
- }
-
- count = 0;
- for (; targ < maxtarg; targ++) {
-
- for (; clun < maxlun; clun++) {
- struct ahd_linux_device *dev;
- struct ahd_busyq *busyq;
- struct ahd_cmd *acmd;
-
- dev = ahd_linux_get_device(ahd, /*chan*/0, 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;
- ahd_linux_queue_cmd_complete(ahd, cmd);
- }
- }
- }
-
- return (count);
+ return 0;
}
-static void
-ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd)
+static u_int
+ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
{
- u_long flags;
+ static int warned_user;
+ u_int tags;
- ahd_lock(ahd, &flags);
- del_timer(&ahd->platform_data->completeq_timer);
- ahd->platform_data->flags &= ~AHD_RUN_CMPLT_Q_TIMER;
- ahd_linux_run_complete_queue(ahd);
- ahd_unlock(ahd, &flags);
+ 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);
}
+/*
+ * Determines the queue depth for a given device.
+ */
static void
-ahd_linux_start_dv(struct ahd_softc *ahd)
+ahd_linux_device_queue_depth(struct scsi_device *sdev)
{
+ struct ahd_devinfo devinfo;
+ u_int tags;
+ struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
- /*
- * 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: Starting DV\n", ahd_name(ahd));
-#endif
-
- ahd->platform_data->flags |= AHD_DV_ACTIVE;
- ahd_freeze_simq(ahd);
+ ahd_compile_devinfo(&devinfo,
+ ahd->our_id,
+ sdev->sdev_target->id, sdev->lun,
+ sdev->sdev_target->channel == 0 ? 'A' : 'B',
+ ROLE_INITIATOR);
+ tags = ahd_linux_user_tagdepth(ahd, &devinfo);
+ if (tags != 0 && sdev->tagged_supported != 0) {
- /* Wake up the DV kthread */
- up(&ahd->platform_data->dv_sem);
+ 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 int
-ahd_linux_dv_thread(void *data)
+ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
+ struct scsi_cmnd *cmd)
{
- struct ahd_softc *ahd;
- int target;
- u_long s;
-
- ahd = (struct ahd_softc *)data;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("In DV Thread\n");
-#endif
-
- /*
- * Complete thread creation.
- */
- lock_kernel();
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,60)
- /*
- * 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_NOFREEZE;
-#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);
-
- /* 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);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s: Beginning Domain Validation\n",
- ahd_name(ahd));
-#endif
-
- /*
- * Wait for any pending commands to drain before proceeding.
- */
- 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);
- }
-
- /*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
- */
- 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);
-
- 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);
-
- /*
- * Release the SIMQ so that normal commands are
- * allowed to continue on the bus.
- */
- ahd_release_simq(ahd);
- }
- up(&ahd->platform_data->eh_sem);
- return (0);
-}
-
-static void
-ahd_linux_kill_dv_thread(struct ahd_softc *ahd)
-{
- 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);
-
- /*
- * 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);
-
- /*
- * 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;
- } else {
- ahd_unlock(ahd, &s);
- }
-}
-
-#define AHD_LINUX_DV_INQ_SHORT_LEN 36
-#define AHD_LINUX_DV_INQ_LEN 256
-#define AHD_LINUX_DV_TIMEOUT (HZ / 4)
-
-#define AHD_SET_DV_STATE(ahd, targ, newstate) \
- ahd_set_dv_state(ahd, targ, newstate, __LINE__)
-
-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;
-
- 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);
-#endif
-
- if (oldstate == newstate)
- targ->dv_state_retry++;
- else
- targ->dv_state_retry = 0;
- targ->dv_state = newstate;
-}
-
-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;
-
- 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, ahd->our_id, 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
-
- ahd_unlock(ahd, &s);
-
- 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, 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 __inline int
-ahd_linux_dv_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- u_long s;
- int retval;
-
- ahd_lock(ahd, &s);
- retval = ahd_linux_fallback(ahd, devinfo);
- ahd_unlock(ahd, &s);
-
- return (retval);
-}
-
-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_dv_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_dv_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_dv_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_dv_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_dv_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_dv_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 = DMA_FROM_DEVICE;
- 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 = DMA_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 = DMA_FROM_DEVICE;
- 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 = DMA_TO_DEVICE;
- 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 = DMA_FROM_DEVICE;
- 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 = DMA_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;
- 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
- 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 {
- return (-1);
- }
- offset = MAX_OFFSET;
- ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_PACED);
- 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, period, offset,
- ppr_options, AHD_TRANS_GOAL, FALSE);
- targ->dv_last_ppr_options = ppr_options;
- return (0);
-}
-
-static void
-ahd_linux_dv_timeout(struct scsi_cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct scb *scb;
- u_long flags;
+ struct scb *scb;
+ struct hardware_scb *hscb;
+ struct ahd_initiator_tinfo *tinfo;
+ struct ahd_tmode_tstate *tstate;
+ u_int col_idx;
+ uint16_t mask;
+ unsigned 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.
+ * Get an scb to use.
*/
- ahd_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_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:%c:%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 in"
-"aic79xx: the aic79xx_osm.c source file.\n");
- warned_user++;
- }
- dv = -1;
+ tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
+ cmd->device->id, &tstate);
+ if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
+ || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
+ col_idx = AHD_NEVER_COL_IDX;
} else {
-
- dv = aic79xx_dv_settings[ahd->unit];
+ col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
+ cmd->device->lun);
}
-
- if (dv < 0) {
- /*
- * Apply the default.
- */
- dv = 1;
- if (ahd->seep_config != 0)
- dv = (ahd->seep_config->bios_control & CFENABLEDV);
+ if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
+ ahd->flags |= AHD_RESOURCE_SHORTAGE;
+ ahd_unlock(ahd, &flags);
+ return SCSI_MLQUEUE_HOST_BUSY;
}
- return (dv);
-}
-static void
-ahd_linux_setup_user_rd_strm_settings(struct ahd_softc *ahd)
-{
- static int warned_user;
- u_int rd_strm_mask;
- u_int target_id;
+ scb->io_ctx = cmd;
+ scb->platform_data->dev = dev;
+ hscb = scb->hscb;
+ cmd->host_scribble = (char *)scb;
/*
- * If we have specific read streaming info for this controller,
- * apply it. Otherwise use the defaults.
+ * Fill out basics of the HSCB.
*/
- if (ahd->unit >= NUM_ELEMENTS(aic79xx_rd_strm_info)) {
-
- if (warned_user == 0) {
-
- printf(KERN_WARNING
-"aic79xx: WARNING: Insufficient rd_strm instances\n"
-"aic79xx: for installed controllers. Using defaults\n"
-"aic79xx: Please update the aic79xx_rd_strm_info array\n"
-"aic79xx: in the aic79xx_osm.c source file.\n");
- warned_user++;
- }
- rd_strm_mask = AIC79XX_CONFIGED_RD_STRM;
- } else {
-
- rd_strm_mask = aic79xx_rd_strm_info[ahd->unit];
- }
- for (target_id = 0; target_id < 16; target_id++) {
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- target_id, &tstate);
- ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
- CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
- tinfo->user.ppr_options &= ~MSG_EXT_PPR_RD_STRM;
- if ((rd_strm_mask & devinfo.target_mask) != 0)
- tinfo->user.ppr_options |= MSG_EXT_PPR_RD_STRM;
- }
-}
+ hscb->control = 0;
+ hscb->scsiid = BUILD_SCSIID(ahd, cmd);
+ hscb->lun = cmd->device->lun;
+ scb->hscb->task_management = 0;
+ mask = SCB_GET_TARGET_MASK(ahd, scb);
-/*
- * 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;
+ if ((ahd->user_discenable & mask) != 0)
+ hscb->control |= DISCENB;
- ahd_compile_devinfo(&devinfo,
- ahd->our_id,
- 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) {
+ if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
+ scb->flags |= SCB_PACKETIZED;
- 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);
+ if ((tstate->auto_negotiate & mask) != 0) {
+ scb->flags |= SCB_AUTO_NEGOTIATE;
+ scb->hscb->control |= MK_MESSAGE;
}
-}
-
-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;
- u_int col_idx;
- 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;
- }
-
- cmd = &acmd_scsi_cmd(acmd);
+ if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
+ int msg_bytes;
+ uint8_t tag_msgs[2];
- /*
- * Get an scb to use.
- */
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- cmd->device->id, &tstate);
- if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
- || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- col_idx = AHD_NEVER_COL_IDX;
+ 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
+ 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 {
- col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
- cmd->device->lun);
- }
- if ((scb = ahd_get_scb(ahd, col_idx)) == 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);
- 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;
- scb->hscb->task_management = 0;
- mask = SCB_GET_TARGET_MASK(ahd, scb);
-
- if ((ahd->user_discenable & mask) != 0)
- hscb->control |= DISCENB;
-
- if (AHD_DV_CMD(cmd) != 0)
- scb->flags |= SCB_SILENT;
-
- if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
- scb->flags |= SCB_PACKETIZED;
-
- if ((tstate->auto_negotiate & mask) != 0) {
- scb->flags |= SCB_AUTO_NEGOTIATE;
- scb->hscb->control |= MK_MESSAGE;
+ hscb->control |= MSG_SIMPLE_TASK;
}
+ }
- 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;
+ memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
- hscb->cdb_len = cmd->cmd_len;
- memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
-
- scb->sg_count = 0;
- ahd_set_residual(scb, 0);
- ahd_set_sense_residual(scb, 0);
- if (cmd->use_sg != 0) {
- void *sg;
- struct scatterlist *cur_seg;
- u_int nseg;
- int dir;
-
- cur_seg = (struct scatterlist *)cmd->request_buffer;
- dir = cmd->sc_data_direction;
- nseg = pci_map_sg(ahd->dev_softc, cur_seg,
- cmd->use_sg, dir);
- scb->platform_data->xfer_len = 0;
- for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
- dma_addr_t addr;
- bus_size_t len;
-
- addr = sg_dma_address(cur_seg);
- len = sg_dma_len(cur_seg);
- scb->platform_data->xfer_len += len;
- sg = ahd_sg_setup(ahd, scb, sg, addr, len,
- /*last*/nseg == 1);
- }
- } else if (cmd->request_bufflen != 0) {
- void *sg;
+ 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) {
+ void *sg;
+ struct scatterlist *cur_seg;
+ u_int nseg;
+ int dir;
+
+ cur_seg = (struct scatterlist *)cmd->request_buffer;
+ dir = cmd->sc_data_direction;
+ nseg = pci_map_sg(ahd->dev_softc, cur_seg,
+ cmd->use_sg, dir);
+ scb->platform_data->xfer_len = 0;
+ for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
dma_addr_t addr;
- int dir;
-
- sg = scb->sg_list;
- dir = cmd->sc_data_direction;
- addr = pci_map_single(ahd->dev_softc,
- cmd->request_buffer,
- cmd->request_bufflen, dir);
- scb->platform_data->xfer_len = cmd->request_bufflen;
- scb->platform_data->buf_busaddr = addr;
- sg = ahd_sg_setup(ahd, scb, sg, addr,
- cmd->request_bufflen, /*last*/TRUE);
- }
+ bus_size_t len;
- LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
- dev->openings--;
- dev->active++;
- dev->commands_issued++;
-
- /* Update the error counting bucket and dump if needed */
- if (dev->target->cmds_since_error) {
- dev->target->cmds_since_error++;
- if (dev->target->cmds_since_error >
- AHD_LINUX_ERR_THRESH)
- dev->target->cmds_since_error = 0;
+ addr = sg_dma_address(cur_seg);
+ len = sg_dma_len(cur_seg);
+ scb->platform_data->xfer_len += len;
+ sg = ahd_sg_setup(ahd, scb, sg, addr, len,
+ /*last*/nseg == 1);
}
+ } else if (cmd->request_bufflen != 0) {
+ void *sg;
+ dma_addr_t addr;
+ int dir;
- if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
- dev->commands_since_idle_or_otag++;
- scb->flags |= SCB_ACTIVE;
- ahd_queue_scb(ahd, scb);
+ sg = scb->sg_list;
+ dir = cmd->sc_data_direction;
+ addr = pci_map_single(ahd->dev_softc,
+ cmd->request_buffer,
+ cmd->request_bufflen, dir);
+ scb->platform_data->xfer_len = cmd->request_bufflen;
+ scb->platform_data->buf_busaddr = addr;
+ sg = ahd_sg_setup(ahd, scb, sg, addr,
+ cmd->request_bufflen, /*last*/TRUE);
}
-}
-
-/*
- * SCSI controller interrupt handler.
- */
-irqreturn_t
-ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
-{
- struct ahd_softc *ahd;
- u_long flags;
- int ours;
-
- ahd = (struct ahd_softc *) dev_id;
- ahd_lock(ahd, &flags);
- ours = ahd_intr(ahd);
- if (ahd_linux_next_device_to_run(ahd) != NULL)
- ahd_schedule_runq(ahd);
- ahd_linux_run_complete_queue(ahd);
- ahd_unlock(ahd, &flags);
- return IRQ_RETVAL(ours);
-}
-
-void
-ahd_platform_flushwork(struct ahd_softc *ahd)
-{
-
- while (ahd_linux_run_complete_queue(ahd) != NULL)
- ;
-}
-
-static struct ahd_linux_target*
-ahd_linux_alloc_target(struct ahd_softc *ahd, u_int channel, u_int target)
-{
- struct ahd_linux_target *targ;
-
- targ = malloc(sizeof(*targ), M_DEVBUF, M_NOWAIT);
- if (targ == NULL)
- return (NULL);
- memset(targ, 0, sizeof(*targ));
- targ->channel = channel;
- targ->target = target;
- targ->ahd = ahd;
- targ->flags = AHD_DV_REQUIRED;
- ahd->platform_data->targets[target] = targ;
- return (targ);
-}
-
-static void
-ahd_linux_free_target(struct ahd_softc *ahd, struct ahd_linux_target *targ)
-{
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int our_id;
- u_int target_offset;
- char channel;
- /*
- * Force a negotiation to async/narrow on any
- * future command to this device unless a bus
- * reset occurs between now and that command.
- */
- channel = 'A' + targ->channel;
- our_id = ahd->our_id;
- target_offset = targ->target;
- tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
- targ->target, &tstate);
- ahd_compile_devinfo(&devinfo, our_id, targ->target, CAM_LUN_WILDCARD,
- channel, ROLE_INITIATOR);
- ahd_set_syncrate(ahd, &devinfo, 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_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);
-}
-
-static struct ahd_linux_device*
-ahd_linux_alloc_device(struct ahd_softc *ahd,
- struct ahd_linux_target *targ, u_int lun)
-{
- struct ahd_linux_device *dev;
+ LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
+ dev->openings--;
+ dev->active++;
+ dev->commands_issued++;
- dev = malloc(sizeof(*dev), M_DEVBUG, M_NOWAIT);
- if (dev == NULL)
- return (NULL);
- memset(dev, 0, sizeof(*dev));
- init_timer(&dev->timer);
- TAILQ_INIT(&dev->busyq);
- dev->flags = AHD_DEV_UNCONFIGURED;
- dev->lun = lun;
- dev->target = targ;
+ if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
+ dev->commands_since_idle_or_otag++;
+ scb->flags |= SCB_ACTIVE;
+ ahd_queue_scb(ahd, scb);
- /*
- * We start out life using untagged
- * transactions of which we allow one.
- */
- dev->openings = 1;
+ ahd_unlock(ahd, &flags);
- /*
- * Set maxtags to 0. This will be changed if we
- * later determine that we are dealing with
- * a tagged queuing capable device.
- */
- dev->maxtags = 0;
-
- targ->refcount++;
- targ->devices[lun] = dev;
- return (dev);
+ return 0;
}
-static void
-ahd_linux_free_device(struct ahd_softc *ahd, struct ahd_linux_device *dev)
+/*
+ * SCSI controller interrupt handler.
+ */
+irqreturn_t
+ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
{
- struct ahd_linux_target *targ;
+ struct ahd_softc *ahd;
+ u_long flags;
+ int ours;
- del_timer(&dev->timer);
- targ = dev->target;
- targ->devices[dev->lun] = NULL;
- free(dev, M_DEVBUF);
- targ->refcount--;
- if (targ->refcount == 0
- && (targ->flags & AHD_DV_REQUIRED) == 0)
- ahd_linux_free_target(ahd, targ);
+ ahd = (struct ahd_softc *) dev_id;
+ ahd_lock(ahd, &flags);
+ ours = ahd_intr(ahd);
+ ahd_unlock(ahd, &flags);
+ return IRQ_RETVAL(ours);
}
void
case AC_TRANSFER_NEG:
{
char buf[80];
- struct ahd_linux_target *targ;
+ struct scsi_target *starget;
struct info_str info;
struct ahd_initiator_tinfo *tinfo;
struct ahd_tmode_tstate *tstate;
+ unsigned int target_ppr_options;
+
+ BUG_ON(target == CAM_TARGET_WILDCARD);
info.buffer = buf;
info.length = sizeof(buf);
* Don't bother reporting results that
* are identical to those last reported.
*/
- targ = ahd->platform_data->targets[target];
- if (targ == NULL)
+ starget = ahd->platform_data->starget[target];
+ if (starget == NULL)
break;
- if (tinfo->curr.period == targ->last_tinfo.period
- && tinfo->curr.width == targ->last_tinfo.width
- && tinfo->curr.offset == targ->last_tinfo.offset
- && tinfo->curr.ppr_options == targ->last_tinfo.ppr_options)
+
+ target_ppr_options =
+ (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
+ + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
+ + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
+ + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
+ + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
+ + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
+ + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
+ + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
+
+ if (tinfo->curr.period == spi_period(starget)
+ && tinfo->curr.width == spi_width(starget)
+ && tinfo->curr.offset == spi_offset(starget)
+ && tinfo->curr.ppr_options == target_ppr_options)
if (bootverbose == 0)
break;
- targ->last_tinfo.period = tinfo->curr.period;
- targ->last_tinfo.width = tinfo->curr.width;
- targ->last_tinfo.offset = tinfo->curr.offset;
- targ->last_tinfo.ppr_options = tinfo->curr.ppr_options;
-
- printf("(%s:%c:", ahd_name(ahd), channel);
- if (target == CAM_TARGET_WILDCARD)
- printf("*): ");
- else
- printf("%d): ", target);
- ahd_format_transinfo(&info, &tinfo->curr);
- if (info.pos < info.length)
- *info.buffer = '\0';
- else
- buf[info.length - 1] = '\0';
- printf("%s", buf);
+ spi_period(starget) = tinfo->curr.period;
+ spi_width(starget) = tinfo->curr.width;
+ spi_offset(starget) = tinfo->curr.offset;
+ spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
+ spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
+ spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
+ spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
+ spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
+ spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
+ spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
+ spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
+ spi_display_xfer_agreement(starget);
break;
}
case AC_SENT_BDR:
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
WARN_ON(lun != CAM_LUN_WILDCARD);
scsi_report_device_reset(ahd->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 = ahd->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:
void
ahd_done(struct ahd_softc *ahd, struct scb *scb)
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
struct ahd_linux_device *dev;
if ((scb->flags & SCB_ACTIVE) == 0) {
ahd_set_transaction_status(scb, CAM_REQ_CMP);
}
} else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
- 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;
+ ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
}
- /*
- * 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
if (dev->active == 0)
dev->commands_since_idle_or_otag = 0;
- if (TAILQ_EMPTY(&dev->busyq)) {
- if ((dev->flags & AHD_DEV_UNCONFIGURED) != 0
- && dev->active == 0
- && (dev->flags & AHD_DEV_TIMER_ACTIVE) == 0)
- ahd_linux_free_device(ahd, dev);
- } else if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- }
-
if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
printf("Recovery SCB completes\n");
if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
|| ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
- if ((scb->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) {
- scb->platform_data->flags &= ~AHD_SCB_UP_EH_SEM;
- up(&ahd->platform_data->eh_sem);
- }
+
+ if (ahd->platform_data->eh_done)
+ complete(ahd->platform_data->eh_done);
}
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
ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
- struct ahd_linux_device *dev, struct scb *scb)
+ struct scsi_device *sdev, struct scb *scb)
{
struct ahd_devinfo devinfo;
+ struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
ahd_compile_devinfo(&devinfo,
ahd->our_id,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A' : 'B',
+ sdev->sdev_target->id, sdev->lun,
+ sdev->sdev_target->channel == 0 ? 'A' : 'B',
ROLE_INITIATOR);
/*
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
break;
}
case SCSI_STATUS_QUEUE_FULL:
- {
/*
* By the time the core driver has returned this
* command, all other commands that were queued
(dev->flags & AHD_DEV_Q_BASIC)
? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
- /* FALLTHROUGH */
}
- case SCSI_STATUS_BUSY:
+}
+
+static void
+ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
+{
+ int status;
+ int new_status = DID_OK;
+ int do_fallback = 0;
+ int scsi_status;
+
+ /*
+ * Map CAM error codes into Linux Error codes. We
+ * avoid the conversion so that the DV code has the
+ * full error information available when making
+ * state change decisions.
+ */
+
+ status = ahd_cmd_get_transaction_status(cmd);
+ switch (status) {
+ case CAM_REQ_INPROG:
+ case CAM_REQ_CMP:
+ new_status = DID_OK;
+ break;
+ case CAM_AUTOSENSE_FAIL:
+ new_status = DID_ERROR;
+ /* Fallthrough */
+ case CAM_SCSI_STATUS_ERROR:
+ scsi_status = ahd_cmd_get_scsi_status(cmd);
+
+ switch(scsi_status) {
+ case SCSI_STATUS_CMD_TERMINATED:
+ case SCSI_STATUS_CHECK_COND:
+ if ((cmd->result >> 24) != DRIVER_SENSE) {
+ do_fallback = 1;
+ } else {
+ struct scsi_sense_data *sense;
+
+ sense = (struct scsi_sense_data *)
+ &cmd->sense_buffer;
+ if (sense->extra_len >= 5 &&
+ (sense->add_sense_code == 0x47
+ || sense->add_sense_code == 0x48))
+ do_fallback = 1;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ case CAM_REQ_ABORTED:
+ new_status = DID_ABORT;
+ break;
+ case CAM_BUSY:
+ new_status = DID_BUS_BUSY;
+ break;
+ case CAM_REQ_INVALID:
+ case CAM_PATH_INVALID:
+ new_status = DID_BAD_TARGET;
+ break;
+ case CAM_SEL_TIMEOUT:
+ new_status = DID_NO_CONNECT;
+ break;
+ case CAM_SCSI_BUS_RESET:
+ case CAM_BDR_SENT:
+ new_status = DID_RESET;
+ break;
+ case CAM_UNCOR_PARITY:
+ new_status = DID_PARITY;
+ do_fallback = 1;
+ break;
+ case CAM_CMD_TIMEOUT:
+ new_status = DID_TIME_OUT;
+ do_fallback = 1;
+ break;
+ case CAM_REQ_CMP_ERR:
+ case CAM_UNEXP_BUSFREE:
+ case CAM_DATA_RUN_ERR:
+ new_status = DID_ERROR;
+ do_fallback = 1;
+ break;
+ case CAM_UA_ABORT:
+ case CAM_NO_HBA:
+ case CAM_SEQUENCE_FAIL:
+ case CAM_CCB_LEN_ERR:
+ case CAM_PROVIDE_FAIL:
+ case CAM_REQ_TERMIO:
+ case CAM_UNREC_HBA_ERROR:
+ case CAM_REQ_TOO_BIG:
+ new_status = DID_ERROR;
+ break;
+ case CAM_REQUEUE_REQ:
+ new_status = DID_REQUEUE;
+ break;
+ default:
+ /* We should never get here */
+ new_status = DID_ERROR;
+ break;
+ }
+
+ if (do_fallback) {
+ printf("%s: device overrun (status %x) on %d:%d:%d\n",
+ ahd_name(ahd), status, cmd->device->channel,
+ cmd->device->id, cmd->device->lun);
+ }
+
+ ahd_cmd_set_transaction_status(cmd, new_status);
+
+ cmd->scsi_done(cmd);
+}
+
+void
+ahd_freeze_simq(struct ahd_softc *ahd)
+{
+ scsi_block_requests(ahd->platform_data->host);
+}
+
+void
+ahd_release_simq(struct ahd_softc *ahd)
+{
+ scsi_unblock_requests(ahd->platform_data->host);
+}
+
+static int
+ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
+{
+ struct ahd_softc *ahd;
+ struct ahd_linux_device *dev;
+ struct scb *pending_scb;
+ u_int saved_scbptr;
+ u_int active_scbptr;
+ u_int last_phase;
+ u_int saved_scsiid;
+ u_int cdb_byte;
+ int retval;
+ int was_paused;
+ int paused;
+ int wait;
+ int disconnected;
+ ahd_mode_state saved_modes;
+ unsigned long flags;
+
+ pending_scb = NULL;
+ paused = FALSE;
+ wait = FALSE;
+ ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
+
+ scmd_printk(KERN_INFO, cmd,
+ "Attempting to queue an ABORT message:");
+
+ printf("CDB:");
+ for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
+ printf(" 0x%x", cmd->cmnd[cdb_byte]);
+ printf("\n");
+
+ ahd_lock(ahd, &flags);
+
+ /*
+ * First determine if we currently own this command.
+ * Start by searching the device queue. If not found
+ * there, check the pending_scb list. If not found
+ * at all, and the system wanted us to just abort the
+ * command, return success.
+ */
+ dev = scsi_transport_device_data(cmd->device);
+
+ if (dev == NULL) {
+ /*
+ * No target device for this command exists,
+ * so we must not still own the command.
+ */
+ scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
+ retval = SUCCESS;
+ goto no_cmd;
+ }
+
+ /*
+ * See if we can find a matching cmd in the pending list.
+ */
+ LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
+ if (pending_scb->io_ctx == cmd)
+ break;
+ }
+
+ if (pending_scb == NULL) {
+ scmd_printk(KERN_INFO, cmd, "Command not found\n");
+ goto no_cmd;
+ }
+
+ if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
+ /*
+ * We can't queue two recovery actions using the same SCB
+ */
+ retval = FAILED;
+ goto done;
+ }
+
+ /*
+ * Ensure that the card doesn't do anything
+ * behind our back. Also make sure that we
+ * didn't "just" miss an interrupt that would
+ * affect this cmd.
+ */
+ was_paused = ahd_is_paused(ahd);
+ ahd_pause_and_flushwork(ahd);
+ paused = TRUE;
+
+ if ((pending_scb->flags & SCB_ACTIVE) == 0) {
+ scmd_printk(KERN_INFO, cmd, "Command already completed\n");
+ goto no_cmd;
+ }
+
+ printf("%s: At time of recovery, card was %spaused\n",
+ ahd_name(ahd), was_paused ? "" : "not ");
+ ahd_dump_card_state(ahd);
+
+ disconnected = TRUE;
+ if (ahd_search_qinfifo(ahd, cmd->device->id,
+ cmd->device->channel + 'A',
+ cmd->device->lun,
+ pending_scb->hscb->tag,
+ ROLE_INITIATOR, CAM_REQ_ABORTED,
+ SEARCH_COMPLETE) > 0) {
+ printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
+ ahd_name(ahd), cmd->device->channel,
+ cmd->device->id, cmd->device->lun);
+ retval = SUCCESS;
+ goto done;
+ }
+
+ saved_modes = ahd_save_modes(ahd);
+ ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
+ last_phase = ahd_inb(ahd, LASTPHASE);
+ saved_scbptr = ahd_get_scbptr(ahd);
+ active_scbptr = saved_scbptr;
+ if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
+ struct scb *bus_scb;
+
+ bus_scb = ahd_lookup_scb(ahd, active_scbptr);
+ if (bus_scb == pending_scb)
+ disconnected = FALSE;
+ }
+
+ /*
+ * At this point, pending_scb is the scb associated with the
+ * passed in command. That command is currently active on the
+ * bus or is in the disconnected state.
+ */
+ saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
+ if (last_phase != P_BUSFREE
+ && SCB_GET_TAG(pending_scb) == active_scbptr) {
+
+ /*
+ * We're active on the bus, so assert ATN
+ * and hope that the target responds.
+ */
+ pending_scb = ahd_lookup_scb(ahd, active_scbptr);
+ pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
+ ahd_outb(ahd, MSG_OUT, HOST_MSG);
+ ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
+ scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
+ wait = TRUE;
+ } else if (disconnected) {
+
+ /*
+ * Actually re-queue this SCB in an attempt
+ * to select the device before it reconnects.
+ */
+ pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
+ ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
+ pending_scb->hscb->cdb_len = 0;
+ pending_scb->hscb->task_attribute = 0;
+ pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
+
+ if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
+ /*
+ * Mark the SCB has having an outstanding
+ * task management function. Should the command
+ * complete normally before the task management
+ * function can be sent, the host will be notified
+ * to abort our requeued SCB.
+ */
+ ahd_outb(ahd, SCB_TASK_MANAGEMENT,
+ pending_scb->hscb->task_management);
+ } else {
+ /*
+ * If non-packetized, set the MK_MESSAGE control
+ * bit indicating that we desire to send a message.
+ * We also set the disconnected flag since there is
+ * no guarantee that our SCB control byte matches
+ * the version on the card. We don't want the
+ * sequencer to abort the command thinking an
+ * unsolicited reselection occurred.
+ */
+ pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
+
+ /*
+ * The sequencer will never re-reference the
+ * in-core SCB. To make sure we are notified
+ * during reslection, set the MK_MESSAGE flag in
+ * the card's copy of the SCB.
+ */
+ ahd_outb(ahd, SCB_CONTROL,
+ ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
+ }
+
/*
- * Set a short timer to defer sending commands for
- * a bit since Linux will not delay in this case.
+ * Clear out any entries in the QINFIFO first
+ * so we are the next SCB for this target
+ * to run.
*/
- if ((dev->flags & AHD_DEV_TIMER_ACTIVE) != 0) {
- printf("%s:%c:%d: Device Timer still active during "
- "busy processing\n", ahd_name(ahd),
- dev->target->channel, dev->target->target);
- break;
- }
- dev->flags |= AHD_DEV_TIMER_ACTIVE;
- dev->qfrozen++;
- init_timer(&dev->timer);
- dev->timer.data = (u_long)dev;
- dev->timer.expires = jiffies + (HZ/2);
- dev->timer.function = ahd_linux_dev_timed_unfreeze;
- add_timer(&dev->timer);
- break;
+ ahd_search_qinfifo(ahd, cmd->device->id,
+ cmd->device->channel + 'A', cmd->device->lun,
+ SCB_LIST_NULL, ROLE_INITIATOR,
+ CAM_REQUEUE_REQ, SEARCH_COMPLETE);
+ ahd_qinfifo_requeue_tail(ahd, pending_scb);
+ ahd_set_scbptr(ahd, saved_scbptr);
+ ahd_print_path(ahd, pending_scb);
+ printf("Device is disconnected, re-queuing SCB\n");
+ wait = TRUE;
+ } else {
+ scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
+ retval = FAILED;
+ goto done;
}
-}
-static void
-ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, Scsi_Cmnd *cmd)
-{
+no_cmd:
/*
- * Typically, the complete queue has very few entries
- * queued to it before the queue is emptied by
- * ahd_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 ahd routines do
- * not guarantee the order that aborted commands will be
- * returned to us.
+ * Our assumption is that if we don't have the command, no
+ * recovery action was required, so we return success. Again,
+ * the semantics of the mid-layer recovery engine are not
+ * well defined, so this may change in time.
*/
- struct ahd_completeq *completeq;
- struct ahd_cmd *list_cmd;
- struct ahd_cmd *acmd;
+ retval = SUCCESS;
+done:
+ if (paused)
+ ahd_unpause(ahd);
+ if (wait) {
+ DECLARE_COMPLETION(done);
- /*
- * Map CAM error codes into Linux Error codes. We
- * avoid the conversion so that the DV code has the
- * full error information available when making
- * state change decisions.
- */
- if (AHD_DV_CMD(cmd) == FALSE) {
- uint32_t status;
- u_int new_status;
-
- status = ahd_cmd_get_transaction_status(cmd);
- if (status != CAM_REQ_CMP) {
- struct ahd_linux_device *dev;
- struct ahd_devinfo devinfo;
- cam_status cam_status;
- uint32_t action;
- u_int scsi_status;
-
- dev = ahd_linux_get_device(ahd, cmd->device->channel,
- cmd->device->id,
- cmd->device->lun,
- /*alloc*/FALSE);
-
- if (dev == NULL)
- goto no_fallback;
-
- ahd_compile_devinfo(&devinfo,
- ahd->our_id,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A':'B',
- ROLE_INITIATOR);
-
- scsi_status = ahd_cmd_get_scsi_status(cmd);
- cam_status = ahd_cmd_get_transaction_status(cmd);
- action = aic_error_action(cmd, dev->target->inq_data,
- cam_status, scsi_status);
- if ((action & SSQ_FALLBACK) != 0) {
-
- /* Update stats */
- dev->target->errors_detected++;
- if (dev->target->cmds_since_error == 0)
- dev->target->cmds_since_error++;
- else {
- dev->target->cmds_since_error = 0;
- ahd_linux_fallback(ahd, &devinfo);
- }
- }
- }
-no_fallback:
- switch (status) {
- case CAM_REQ_INPROG:
- case CAM_REQ_CMP:
- case CAM_SCSI_STATUS_ERROR:
- new_status = DID_OK;
- break;
- case CAM_REQ_ABORTED:
- new_status = DID_ABORT;
- break;
- case CAM_BUSY:
- new_status = DID_BUS_BUSY;
- break;
- case CAM_REQ_INVALID:
- case CAM_PATH_INVALID:
- new_status = DID_BAD_TARGET;
- break;
- case CAM_SEL_TIMEOUT:
- new_status = DID_NO_CONNECT;
- break;
- case CAM_SCSI_BUS_RESET:
- case CAM_BDR_SENT:
- new_status = DID_RESET;
- break;
- case CAM_UNCOR_PARITY:
- new_status = DID_PARITY;
- break;
- case CAM_CMD_TIMEOUT:
- new_status = DID_TIME_OUT;
- break;
- case CAM_UA_ABORT:
- case CAM_REQ_CMP_ERR:
- case CAM_AUTOSENSE_FAIL:
- case CAM_NO_HBA:
- case CAM_DATA_RUN_ERR:
- case CAM_UNEXP_BUSFREE:
- case CAM_SEQUENCE_FAIL:
- case CAM_CCB_LEN_ERR:
- case CAM_PROVIDE_FAIL:
- case CAM_REQ_TERMIO:
- case CAM_UNREC_HBA_ERROR:
- case CAM_REQ_TOO_BIG:
- 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;
- ahd_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;
- break;
- default:
- /* We should never get here */
- new_status = DID_ERROR;
- break;
+ ahd->platform_data->eh_done = &done;
+ ahd_unlock(ahd, &flags);
+
+ printf("%s: Recovery code sleeping\n", ahd_name(ahd));
+ if (!wait_for_completion_timeout(&done, 5 * HZ)) {
+ ahd_lock(ahd, &flags);
+ ahd->platform_data->eh_done = NULL;
+ ahd_unlock(ahd, &flags);
+ printf("%s: Timer Expired (active %d)\n",
+ ahd_name(ahd), dev->active);
+ retval = FAILED;
}
+ printf("Recovery code awake\n");
+ } else
+ ahd_unlock(ahd, &flags);
- ahd_cmd_set_transaction_status(cmd, new_status);
- }
+ if (retval != SUCCESS)
+ printf("%s: Command abort returning 0x%x\n",
+ ahd_name(ahd), retval);
- completeq = &ahd->platform_data->completeq;
- list_cmd = TAILQ_FIRST(completeq);
- acmd = (struct ahd_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);
+ return retval;
}
-static void
-ahd_linux_filter_inquiry(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
+static void ahd_linux_set_width(struct scsi_target *starget, int width)
{
- 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_linux_device *dev;
- u_int width;
- u_int period;
- u_int offset;
- u_int ppr_options;
- u_int trans_version;
- u_int prot_version;
+ 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;
- /*
- * 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);
+ 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_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->goal.ppr_options;
+ unsigned int dt;
+ unsigned long flags;
+ unsigned long offset = tinfo->goal.offset;
- sid = (struct scsi_inquiry_data *)dev->target->inq_data;
- if (SID_QUAL(sid) == SID_QUAL_LU_CONNECTED) {
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: set period to %d\n", ahd_name(ahd), period);
+#endif
+ if (offset == 0)
+ offset = MAX_OFFSET;
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- } else {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- return;
+ if (period < 8)
+ period = 8;
+ if (period < 10) {
+ ppr_options |= MSG_EXT_PPR_DT_REQ;
+ if (period == 8)
+ ppr_options |= MSG_EXT_PPR_IU_REQ;
}
- /*
- * 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));
+ dt = ppr_options & MSG_EXT_PPR_DT_REQ;
- /*
- * 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);
- ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX);
- ahd_validate_offset(ahd, /*tinfo limit*/NULL, period,
- &offset, width, ROLE_UNKNOWN);
- if (offset == 0 || period == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
+ ahd_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) {
+ if (spi_width(starget) == 0)
+ ppr_options &= MSG_EXT_PPR_QAS_REQ;
}
- /* 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, period, offset, ppr_options,
- AHD_TRANS_GOAL, /*paused*/FALSE);
+
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-void
-ahd_freeze_simq(struct ahd_softc *ahd)
+static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
{
- ahd->platform_data->qfrozen++;
- if (ahd->platform_data->qfrozen == 1) {
- scsi_block_requests(ahd->platform_data->host);
- ahd_platform_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS,
- CAM_LUN_WILDCARD, SCB_LIST_NULL,
- ROLE_INITIATOR, CAM_REQUEUE_REQ);
+ 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 int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
+
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: set offset to %d\n", ahd_name(ahd), offset);
+#endif
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ if (offset != 0) {
+ period = tinfo->goal.period;
+ ppr_options = tinfo->goal.ppr_options;
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
}
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
+ AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-void
-ahd_release_simq(struct ahd_softc *ahd)
+static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
{
- u_long s;
- int unblock_reqs;
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_DT_REQ;
+ unsigned int period = tinfo->goal.period;
+ unsigned int width = tinfo->goal.width;
+ unsigned long flags;
- unblock_reqs = 0;
- ahd_lock(ahd, &s);
- if (ahd->platform_data->qfrozen > 0)
- ahd->platform_data->qfrozen--;
- if (ahd->platform_data->qfrozen == 0) {
- unblock_reqs = 1;
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s DT\n", ahd_name(ahd),
+ dt ? "enabling" : "disabling");
+#endif
+ if (dt) {
+ ppr_options |= MSG_EXT_PPR_DT_REQ;
+ if (!width)
+ ahd_linux_set_width(starget, 1);
+ } else {
+ if (period <= 9)
+ period = 10; /* If resetting DT, period must be >= 25ns */
+ /* IU is invalid without DT set */
+ ppr_options &= ~MSG_EXT_PPR_IU_REQ;
}
- 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_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+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->goal.ppr_options
+ & ~MSG_EXT_PPR_QAS_REQ;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt;
+ unsigned long flags;
+
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s QAS\n", ahd_name(ahd),
+ qas ? "enabling" : "disabling");
+#endif
+
+ if (qas) {
+ ppr_options |= MSG_EXT_PPR_QAS_REQ;
}
- ahd_schedule_runq(ahd);
- ahd_unlock(ahd, &s);
- /*
- * There is still a race here. The mid-layer
- * should keep its own freeze count and use
- * a bottom half handler to run the queues
- * so we can unblock with our own lock held.
- */
- if (unblock_reqs)
- scsi_unblock_requests(ahd->platform_data->host);
+
+ dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-static void
-ahd_linux_sem_timeout(u_long arg)
+static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
{
- struct scb *scb;
- struct ahd_softc *ahd;
- u_long s;
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_IU_REQ;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt;
+ unsigned long flags;
- scb = (struct scb *)arg;
- ahd = scb->ahd_softc;
- ahd_lock(ahd, &s);
- if ((scb->platform_data->flags & AHD_SCB_UP_EH_SEM) != 0) {
- scb->platform_data->flags &= ~AHD_SCB_UP_EH_SEM;
- up(&ahd->platform_data->eh_sem);
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s IU\n", ahd_name(ahd),
+ iu ? "enabling" : "disabling");
+#endif
+
+ if (iu) {
+ ppr_options |= MSG_EXT_PPR_IU_REQ;
+ ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
}
- ahd_unlock(ahd, &s);
+
+ dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-static void
-ahd_linux_dev_timed_unfreeze(u_long arg)
+static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
{
- struct ahd_linux_device *dev;
- struct ahd_softc *ahd;
- u_long s;
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_RD_STRM;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
- dev = (struct ahd_linux_device *)arg;
- ahd = dev->target->ahd;
- ahd_lock(ahd, &s);
- dev->flags &= ~AHD_DEV_TIMER_ACTIVE;
- if (dev->qfrozen > 0)
- dev->qfrozen--;
- if (dev->qfrozen == 0
- && (dev->flags & AHD_DEV_ON_RUN_LIST) == 0)
- ahd_linux_run_device_queue(ahd, dev);
- if ((dev->flags & AHD_DEV_UNCONFIGURED) != 0
- && dev->active == 0)
- ahd_linux_free_device(ahd, dev);
- ahd_unlock(ahd, &s);
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s Read Streaming\n", ahd_name(ahd),
+ rdstrm ? "enabling" : "disabling");
+#endif
+
+ if (rdstrm)
+ ppr_options |= MSG_EXT_PPR_RD_STRM;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-void
-ahd_platform_dump_card_state(struct ahd_softc *ahd)
+static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
{
- struct ahd_linux_device *dev;
- int target;
- int maxtarget;
- int lun;
- int i;
-
- maxtarget = (ahd->features & AHD_WIDE) ? 15 : 7;
- for (target = 0; target <=maxtarget; target++) {
-
- for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
- struct ahd_cmd *acmd;
-
- dev = ahd_linux_get_device(ahd, 0, target,
- lun, /*alloc*/FALSE);
- if (dev == NULL)
- continue;
-
- printf("DevQ(%d:%d:%d): ", 0, target, lun);
- i = 0;
- TAILQ_FOREACH(acmd, &dev->busyq, acmd_links.tqe) {
- if (i++ > AHD_SCB_MAX)
- break;
- }
- printf("%d waiting\n", i);
- }
- }
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_WR_FLOW;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
+
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s Write Flow Control\n", ahd_name(ahd),
+ wrflow ? "enabling" : "disabling");
+#endif
+
+ if (wrflow)
+ ppr_options |= MSG_EXT_PPR_WR_FLOW;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-static int __init
-ahd_linux_init(void)
+static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- return ahd_linux_detect(&aic79xx_driver_template);
-#else
- scsi_register_module(MODULE_SCSI_HA, &aic79xx_driver_template);
- if (aic79xx_driver_template.present == 0) {
- scsi_unregister_module(MODULE_SCSI_HA,
- &aic79xx_driver_template);
- return (-ENODEV);
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_RTI;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
+
+ if ((ahd->features & AHD_RTI) == 0) {
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: RTI not available\n", ahd_name(ahd));
+#endif
+ return;
}
- return (0);
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s RTI\n", ahd_name(ahd),
+ rti ? "enabling" : "disabling");
#endif
+
+ if (rti)
+ ppr_options |= MSG_EXT_PPR_RTI;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
}
-static void __exit
-ahd_linux_exit(void)
+static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
{
- struct ahd_softc *ahd;
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_PCOMP_EN;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
- /*
- * 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) {
+#ifdef AHD_DEBUG
+ if ((ahd_debug & AHD_SHOW_DV) != 0)
+ printf("%s: %s Precompensation\n", ahd_name(ahd),
+ pcomp ? "Enable" : "Disable");
+#endif
- ahd_linux_kill_dv_thread(ahd);
- }
+ if (pcomp)
+ ppr_options |= MSG_EXT_PPR_PCOMP_EN;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
+{
+ 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->goal.ppr_options
+ & ~MSG_EXT_PPR_HOLD_MCS;
+ unsigned int period = tinfo->goal.period;
+ unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+ unsigned long flags;
+
+ if (hold)
+ ppr_options |= MSG_EXT_PPR_HOLD_MCS;
+
+ ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+ starget->channel + 'A', ROLE_INITIATOR);
+ ahd_find_syncrate(ahd, &period, &ppr_options,
+ dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+ ahd_lock(ahd, &flags);
+ ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+ ppr_options, AHD_TRANS_GOAL, FALSE);
+ ahd_unlock(ahd, &flags);
+}
+
+
+
+static struct spi_function_template ahd_linux_transport_functions = {
+ .set_offset = ahd_linux_set_offset,
+ .show_offset = 1,
+ .set_period = ahd_linux_set_period,
+ .show_period = 1,
+ .set_width = ahd_linux_set_width,
+ .show_width = 1,
+ .set_dt = ahd_linux_set_dt,
+ .show_dt = 1,
+ .set_iu = ahd_linux_set_iu,
+ .show_iu = 1,
+ .set_qas = ahd_linux_set_qas,
+ .show_qas = 1,
+ .set_rd_strm = ahd_linux_set_rd_strm,
+ .show_rd_strm = 1,
+ .set_wr_flow = ahd_linux_set_wr_flow,
+ .show_wr_flow = 1,
+ .set_rti = ahd_linux_set_rti,
+ .show_rti = 1,
+ .set_pcomp_en = ahd_linux_set_pcomp_en,
+ .show_pcomp_en = 1,
+ .set_hold_mcs = ahd_linux_set_hold_mcs,
+ .show_hold_mcs = 1,
+};
+
+static int __init
+ahd_linux_init(void)
+{
+ int error = 0;
-#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.
+ * If we've been passed any parameters, process them now.
*/
- scsi_unregister_module(MODULE_SCSI_HA, &aic79xx_driver_template);
-#endif
+ if (aic79xx)
+ aic79xx_setup(aic79xx);
+
+ ahd_linux_transport_template =
+ spi_attach_transport(&ahd_linux_transport_functions);
+ if (!ahd_linux_transport_template)
+ return -ENODEV;
+
+ scsi_transport_reserve_target(ahd_linux_transport_template,
+ sizeof(struct ahd_linux_target));
+ scsi_transport_reserve_device(ahd_linux_transport_template,
+ sizeof(struct ahd_linux_device));
+
+ error = ahd_linux_pci_init();
+ if (error)
+ spi_release_transport(ahd_linux_transport_template);
+ return error;
+}
+
+static void __exit
+ahd_linux_exit(void)
+{
ahd_linux_pci_exit();
+ spi_release_transport(ahd_linux_transport_template);
}
module_init(ahd_linux_init);
git://git.onelab.eu / linux-2.6.git / blobdiff