X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fscsi%2Faic7xxx%2Faic7xxx_osm.c;h=660f26e23a38387e4c34120c118ddb709dca9ea4;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=031c6aaa5ca571456d1d4f8f3e0eabad56ef725e;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index 031c6aaa5..660f26e23 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -123,31 +123,13 @@ #include "aic7xxx_inline.h" #include -/* - * Include aiclib.c as part of our - * "module dependencies are hard" work around. - */ -#include "aiclib.c" +static struct scsi_transport_template *ahc_linux_transport_template = NULL; #include /* __setup */ - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -#include "sd.h" /* For geometry detection */ -#endif - #include /* For fetching system memory size */ #include /* For block_size() */ #include /* For ssleep/msleep */ -/* - * Lock protecting manipulation of the ahc softc list. - */ -spinlock_t ahc_list_spinlock; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -/* For dynamic sglist size calculation. */ -u_int ahc_linux_nseg; -#endif /* * Set this to the delay in seconds after SCSI bus reset. @@ -270,39 +252,6 @@ static adapter_tag_info_t aic7xxx_tag_info[] = {AIC7XXX_CONFIGED_TAG_COMMANDS} }; -/* - * DV option: - * - * positive value = DV Enabled - * zero = DV Disabled - * negative value = DV Default for adapter type/seeprom - */ -#ifdef CONFIG_AIC7XXX_DV_SETTING -#define AIC7XXX_CONFIGED_DV CONFIG_AIC7XXX_DV_SETTING -#else -#define AIC7XXX_CONFIGED_DV -1 -#endif - -static int8_t aic7xxx_dv_settings[] = -{ - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV, - AIC7XXX_CONFIGED_DV -}; - /* * There should be a specific return value for this in scsi.h, but * it seems that most drivers ignore it. @@ -332,25 +281,6 @@ ahc_print_path(struct ahc_softc *ahc, struct scb *scb) */ static uint32_t aic7xxx_no_reset; -/* - * Certain PCI motherboards will scan PCI devices from highest to lowest, - * others scan from lowest to highest, and they tend to do all kinds of - * strange things when they come into contact with PCI bridge chips. The - * net result of all this is that the PCI card that is actually used to boot - * the machine is very hard to detect. Most motherboards go from lowest - * PCI slot number to highest, and the first SCSI controller found is the - * one you boot from. The only exceptions to this are when a controller - * has its BIOS disabled. So, we by default sort all of our SCSI controllers - * from lowest PCI slot number to highest PCI slot number. We also force - * all controllers with their BIOS disabled to the end of the list. This - * works on *almost* all computers. Where it doesn't work, we have this - * option. Setting this option to non-0 will reverse the order of the sort - * to highest first, then lowest, but will still leave cards with their BIOS - * disabled at the very end. That should fix everyone up unless there are - * really strange cirumstances. - */ -static uint32_t aic7xxx_reverse_scan; - /* * Should we force EXTENDED translation on a controller. * 0 == Use whatever is in the SEEPROM or default to off @@ -370,22 +300,6 @@ static uint32_t aic7xxx_extended; */ static uint32_t aic7xxx_pci_parity = ~0; -/* - * Certain newer motherboards have put new PCI based devices into the - * IO spaces that used to typically be occupied by VLB or EISA cards. - * This overlap can cause these newer motherboards to lock up when scanned - * for older EISA and VLB devices. Setting this option to non-0 will - * cause the driver to skip scanning for any VLB or EISA controllers and - * only support the PCI controllers. NOTE: this means that if the kernel - * os compiled with PCI support disabled, then setting this to non-0 - * would result in never finding any devices :) - */ -#ifndef CONFIG_AIC7XXX_PROBE_EISA_VL -uint32_t aic7xxx_probe_eisa_vl; -#else -uint32_t aic7xxx_probe_eisa_vl = ~0; -#endif - /* * There are lots of broken chipsets in the world. Some of them will * violate the PCI spec when we issue byte sized memory writes to our @@ -394,13 +308,6 @@ uint32_t aic7xxx_probe_eisa_vl = ~0; */ uint32_t aic7xxx_allow_memio = ~0; -/* - * aic7xxx_detect() has been run, so register all device arrivals - * immediately with the system rather than deferring to the sorted - * attachment performed by aic7xxx_detect(). - */ -int aic7xxx_detect_complete; - /* * So that we can set how long each device is given as a selection timeout. * The table of values goes like this: @@ -421,7 +328,7 @@ static uint32_t aic7xxx_seltime; * force all outstanding transactions to be serviced prior to a new * transaction. */ -uint32_t aic7xxx_periodic_otag; +static uint32_t aic7xxx_periodic_otag; /* * Module information and settable options. @@ -434,7 +341,7 @@ MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(AIC7XXX_DRIVER_VERSION); module_param(aic7xxx, charp, 0444); MODULE_PARM_DESC(aic7xxx, -"period delimited, options string.\n" +"period-delimited options string:\n" " verbose Enable verbose/diagnostic logging\n" " allow_memio Allow device registers to be memory mapped\n" " debug Bitmask of debug values to enable\n" @@ -446,11 +353,9 @@ MODULE_PARM_DESC(aic7xxx, " periodically to prevent tag starvation.\n" " This may be required by some older disk\n" " drives or RAID arrays.\n" -" reverse_scan Sort PCI devices highest Bus/Slot to lowest\n" " tag_info: Set per-target tag depth\n" " global_tag_depth: Global tag depth for every target\n" " on every bus\n" -" dv: Set per-controller Domain Validation Setting.\n" " seltime: Selection Timeout\n" " (0/256ms,1/128ms,2/64ms,3/32ms)\n" "\n" @@ -463,228 +368,37 @@ MODULE_PARM_DESC(aic7xxx, ); static void ahc_linux_handle_scsi_status(struct ahc_softc *, - struct ahc_linux_device *, + struct scsi_device *, struct scb *); static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, - Scsi_Cmnd *cmd); -static void ahc_linux_filter_inquiry(struct ahc_softc*, struct ahc_devinfo*); -static void ahc_linux_sem_timeout(u_long arg); + struct scsi_cmnd *cmd); static void ahc_linux_freeze_simq(struct ahc_softc *ahc); -static void ahc_linux_release_simq(u_long arg); -static void ahc_linux_dev_timed_unfreeze(u_long arg); -static int ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag); +static void ahc_linux_release_simq(struct ahc_softc *ahc); +static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag); static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc); -static void ahc_linux_size_nseg(void); -static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc); -static void ahc_linux_start_dv(struct ahc_softc *ahc); -static void ahc_linux_dv_timeout(struct scsi_cmnd *cmd); -static int ahc_linux_dv_thread(void *data); -static void ahc_linux_kill_dv_thread(struct ahc_softc *ahc); -static void ahc_linux_dv_target(struct ahc_softc *ahc, u_int target); -static void ahc_linux_dv_transition(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ); -static void ahc_linux_dv_fill_cmd(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo); -static void ahc_linux_dv_inq(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ, - u_int request_length); -static void ahc_linux_dv_tur(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo); -static void ahc_linux_dv_rebd(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ); -static void ahc_linux_dv_web(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ); -static void ahc_linux_dv_reb(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ); -static void ahc_linux_dv_su(struct ahc_softc *ahc, - struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ); -static int ahc_linux_fallback(struct ahc_softc *ahc, - struct ahc_devinfo *devinfo); -static void ahc_linux_dv_complete(Scsi_Cmnd *cmd); -static void ahc_linux_generate_dv_pattern(struct ahc_linux_target *targ); static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo); -static u_int ahc_linux_user_dv_setting(struct ahc_softc *ahc); -static void ahc_linux_device_queue_depth(struct ahc_softc *ahc, - struct ahc_linux_device *dev); -static struct ahc_linux_target* ahc_linux_alloc_target(struct ahc_softc*, - u_int, u_int); -static void ahc_linux_free_target(struct ahc_softc*, - struct ahc_linux_target*); -static struct ahc_linux_device* ahc_linux_alloc_device(struct ahc_softc*, - struct ahc_linux_target*, - u_int); -static void ahc_linux_free_device(struct ahc_softc*, - struct ahc_linux_device*); -static void ahc_linux_run_device_queue(struct ahc_softc*, - struct ahc_linux_device*); +static void ahc_linux_device_queue_depth(struct scsi_device *); +static int ahc_linux_run_command(struct ahc_softc*, + struct ahc_linux_device *, + struct scsi_cmnd *); static void ahc_linux_setup_tag_info_global(char *p); -static aic_option_callback_t ahc_linux_setup_tag_info; -static aic_option_callback_t ahc_linux_setup_dv; static int aic7xxx_setup(char *s); -static int ahc_linux_next_unit(void); -static void ahc_runq_tasklet(unsigned long data); -static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc); + +static int ahc_linux_unit; + /********************************* Inlines ************************************/ -static __inline void ahc_schedule_runq(struct ahc_softc *ahc); -static __inline struct ahc_linux_device* - ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, - u_int target, u_int lun, int alloc); -static __inline void ahc_schedule_completeq(struct ahc_softc *ahc); -static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc, - struct ahc_linux_device *dev); -static __inline struct ahc_linux_device * - ahc_linux_next_device_to_run(struct ahc_softc *ahc); -static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc); static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*); static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb, struct ahc_dma_seg *sg, dma_addr_t addr, bus_size_t len); -static __inline void -ahc_schedule_completeq(struct ahc_softc *ahc) -{ - if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) { - ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER; - ahc->platform_data->completeq_timer.expires = jiffies; - add_timer(&ahc->platform_data->completeq_timer); - } -} - -/* - * Must be called with our lock held. - */ -static __inline void -ahc_schedule_runq(struct ahc_softc *ahc) -{ - tasklet_schedule(&ahc->platform_data->runq_tasklet); -} - -static __inline struct ahc_linux_device* -ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target, - u_int lun, int alloc) -{ - struct ahc_linux_target *targ; - struct ahc_linux_device *dev; - u_int target_offset; - - target_offset = target; - if (channel != 0) - target_offset += 8; - targ = ahc->platform_data->targets[target_offset]; - if (targ == NULL) { - if (alloc != 0) { - targ = ahc_linux_alloc_target(ahc, channel, target); - if (targ == NULL) - return (NULL); - } else - return (NULL); - } - dev = targ->devices[lun]; - if (dev == NULL && alloc != 0) - dev = ahc_linux_alloc_device(ahc, targ, lun); - return (dev); -} - -#define AHC_LINUX_MAX_RETURNED_ERRORS 4 -static struct ahc_cmd * -ahc_linux_run_complete_queue(struct ahc_softc *ahc) -{ - struct ahc_cmd *acmd; - u_long done_flags; - int with_errors; - - with_errors = 0; - ahc_done_lock(ahc, &done_flags); - while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) { - Scsi_Cmnd *cmd; - - if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) { - /* - * Linux uses stack recursion to requeue - * commands that need to be retried. Avoid - * blowing out the stack by "spoon feeding" - * commands that completed with error back - * the operating system in case they are going - * to be retried. "ick" - */ - ahc_schedule_completeq(ahc); - break; - } - TAILQ_REMOVE(&ahc->platform_data->completeq, - acmd, acmd_links.tqe); - cmd = &acmd_scsi_cmd(acmd); - cmd->host_scribble = NULL; - if (ahc_cmd_get_transaction_status(cmd) != DID_OK - || (cmd->result & 0xFF) != SCSI_STATUS_OK) - with_errors++; - - cmd->scsi_done(cmd); - } - ahc_done_unlock(ahc, &done_flags); - return (acmd); -} - -static __inline void -ahc_linux_check_device_queue(struct ahc_softc *ahc, - struct ahc_linux_device *dev) -{ - if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0 - && dev->active == 0) { - dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY; - dev->qfrozen--; - } - - if (TAILQ_FIRST(&dev->busyq) == NULL - || dev->openings == 0 || dev->qfrozen != 0) - return; - - ahc_linux_run_device_queue(ahc, dev); -} - -static __inline struct ahc_linux_device * -ahc_linux_next_device_to_run(struct ahc_softc *ahc) -{ - - if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0 - || (ahc->platform_data->qfrozen != 0 - && AHC_DV_SIMQ_FROZEN(ahc) == 0)) - return (NULL); - return (TAILQ_FIRST(&ahc->platform_data->device_runq)); -} - -static __inline void -ahc_linux_run_device_queues(struct ahc_softc *ahc) -{ - struct ahc_linux_device *dev; - - while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) { - TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links); - dev->flags &= ~AHC_DEV_ON_RUN_LIST; - ahc_linux_check_device_queue(ahc, dev); - } -} - static __inline void ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb) { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; cmd = scb->io_ctx; ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE); @@ -693,12 +407,12 @@ ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb) sg = (struct scatterlist *)cmd->request_buffer; pci_unmap_sg(ahc->dev_softc, sg, cmd->use_sg, - scsi_to_pci_dma_dir(cmd->sc_data_direction)); + cmd->sc_data_direction); } else if (cmd->request_bufflen != 0) { pci_unmap_single(ahc->dev_softc, scb->platform_data->buf_busaddr, cmd->request_bufflen, - scsi_to_pci_dma_dir(cmd->sc_data_direction)); + cmd->sc_data_direction); } } @@ -724,191 +438,6 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb, return (consumed); } -/************************ Host template entry points *************************/ -static int ahc_linux_detect(Scsi_Host_Template *); -static int ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *)); -static const char *ahc_linux_info(struct Scsi_Host *); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) -static int ahc_linux_slave_alloc(Scsi_Device *); -static int ahc_linux_slave_configure(Scsi_Device *); -static void ahc_linux_slave_destroy(Scsi_Device *); -#if defined(__i386__) -static int ahc_linux_biosparam(struct scsi_device*, - struct block_device*, - sector_t, int[]); -#endif -#else -static int ahc_linux_release(struct Scsi_Host *); -static void ahc_linux_select_queue_depth(struct Scsi_Host *host, - Scsi_Device *scsi_devs); -#if defined(__i386__) -static int ahc_linux_biosparam(Disk *, kdev_t, int[]); -#endif -#endif -static int ahc_linux_bus_reset(Scsi_Cmnd *); -static int ahc_linux_dev_reset(Scsi_Cmnd *); -static int ahc_linux_abort(Scsi_Cmnd *); - -/* - * Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg). - * - * In pre-2.5.X... - * The midlayer allocates an S/G array dynamically when a command is issued - * using SCSI malloc. This array, which is in an OS dependent format that - * must later be copied to our private S/G list, is sized to house just the - * number of segments needed for the current transfer. Since the code that - * sizes the SCSI malloc pool does not take into consideration fragmentation - * of the pool, executing transactions numbering just a fraction of our - * concurrent transaction limit with list lengths aproaching AHC_NSEG will - * quickly depleat the SCSI malloc pool of usable space. Unfortunately, the - * mid-layer does not properly handle this scsi malloc failures for the S/G - * array and the result can be a lockup of the I/O subsystem. We try to size - * our S/G list so that it satisfies our drivers allocation requirements in - * addition to avoiding fragmentation of the SCSI malloc pool. - */ -static void -ahc_linux_size_nseg(void) -{ -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - u_int cur_size; - u_int best_size; - - /* - * The SCSI allocator rounds to the nearest 512 bytes - * an cannot allocate across a page boundary. Our algorithm - * is to start at 1K of scsi malloc space per-command and - * loop through all factors of the PAGE_SIZE and pick the best. - */ - best_size = 0; - for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) { - u_int nseg; - - nseg = cur_size / sizeof(struct scatterlist); - if (nseg < AHC_LINUX_MIN_NSEG) - continue; - - if (best_size == 0) { - best_size = cur_size; - ahc_linux_nseg = nseg; - } else { - u_int best_rem; - u_int cur_rem; - - /* - * Compare the traits of the current "best_size" - * with the current size to determine if the - * current size is a better size. - */ - best_rem = best_size % sizeof(struct scatterlist); - cur_rem = cur_size % sizeof(struct scatterlist); - if (cur_rem < best_rem) { - best_size = cur_size; - ahc_linux_nseg = nseg; - } - } - } -#endif -} - -/* - * Try to detect an Adaptec 7XXX controller. - */ -static int -ahc_linux_detect(Scsi_Host_Template *template) -{ - struct ahc_softc *ahc; - int found = 0; - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - /* - * It is a bug that the upper layer takes - * this lock just prior to calling us. - */ - spin_unlock_irq(&io_request_lock); -#endif - - /* - * Sanity checking of Linux SCSI data structures so - * that some of our hacks^H^H^H^H^Hassumptions aren't - * violated. - */ - if (offsetof(struct ahc_cmd_internal, end) - > offsetof(struct scsi_cmnd, host_scribble)) { - printf("ahc_linux_detect: SCSI data structures changed.\n"); - printf("ahc_linux_detect: Unable to attach\n"); - return (0); - } - ahc_linux_size_nseg(); - /* - * If we've been passed any parameters, process them now. - */ - if (aic7xxx) - aic7xxx_setup(aic7xxx); - - template->proc_name = "aic7xxx"; - - /* - * Initialize our softc list lock prior to - * probing for any adapters. - */ - ahc_list_lockinit(); - - found = ahc_linux_pci_init(); - if (!ahc_linux_eisa_init()) - found++; - - /* - * Register with the SCSI layer all - * controllers we've found. - */ - TAILQ_FOREACH(ahc, &ahc_tailq, links) { - - if (ahc_linux_register_host(ahc, template) == 0) - found++; - } - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - spin_lock_irq(&io_request_lock); -#endif - aic7xxx_detect_complete++; - - return (found); -} - -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) -/* - * Free the passed in Scsi_Host memory structures prior to unloading the - * module. - */ -int -ahc_linux_release(struct Scsi_Host * host) -{ - struct ahc_softc *ahc; - u_long l; - - ahc_list_lock(&l); - if (host != NULL) { - - /* - * We should be able to just perform - * the free directly, but check our - * list for extra sanity. - */ - ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata); - if (ahc != NULL) { - u_long s; - - ahc_lock(ahc, &s); - ahc_intr_enable(ahc, FALSE); - ahc_unlock(ahc, &s); - ahc_free(ahc); - } - } - ahc_list_unlock(&l); - return (0); -} -#endif - /* * Return a string describing the driver. */ @@ -941,214 +470,182 @@ ahc_linux_info(struct Scsi_Host *host) * Queue an SCB to the controller. */ static int -ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *)) +ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) { struct ahc_softc *ahc; - struct ahc_linux_device *dev; - u_long flags; + struct ahc_linux_device *dev = scsi_transport_device_data(cmd->device); + int rtn = SCSI_MLQUEUE_HOST_BUSY; + unsigned long flags; ahc = *(struct ahc_softc **)cmd->device->host->hostdata; - /* - * Save the callback on completion function. - */ - cmd->scsi_done = scsi_done; - - ahc_midlayer_entrypoint_lock(ahc, &flags); - - /* - * Close the race of a command that was in the process of - * being queued to us just as our simq was frozen. Let - * DV commands through so long as we are only frozen to - * perform DV. - */ - if (ahc->platform_data->qfrozen != 0 - && AHC_DV_CMD(cmd) == 0) { - - ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ); - ahc_linux_queue_cmd_complete(ahc, cmd); - ahc_schedule_completeq(ahc); - ahc_midlayer_entrypoint_unlock(ahc, &flags); - return (0); - } - dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, - cmd->device->lun, /*alloc*/TRUE); - if (dev == NULL) { - ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL); - ahc_linux_queue_cmd_complete(ahc, cmd); - ahc_schedule_completeq(ahc); - ahc_midlayer_entrypoint_unlock(ahc, &flags); - printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n", - ahc_name(ahc)); - return (0); - } - cmd->result = CAM_REQ_INPROG << 16; - TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe); - if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) { - TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links); - dev->flags |= AHC_DEV_ON_RUN_LIST; - ahc_linux_run_device_queues(ahc); + ahc_lock(ahc, &flags); + if (ahc->platform_data->qfrozen == 0) { + cmd->scsi_done = scsi_done; + cmd->result = CAM_REQ_INPROG << 16; + rtn = ahc_linux_run_command(ahc, dev, cmd); } - ahc_midlayer_entrypoint_unlock(ahc, &flags); - return (0); + ahc_unlock(ahc, &flags); + + return rtn; } -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) -static int -ahc_linux_slave_alloc(Scsi_Device *device) +static inline struct scsi_target ** +ahc_linux_target_in_softc(struct scsi_target *starget) { - struct ahc_softc *ahc; + struct ahc_softc *ahc = + *((struct ahc_softc **)dev_to_shost(&starget->dev)->hostdata); + unsigned int target_offset; - ahc = *((struct ahc_softc **)device->host->hostdata); - if (bootverbose) - printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id); - return (0); + target_offset = starget->id; + if (starget->channel != 0) + target_offset += 8; + + return &ahc->platform_data->starget[target_offset]; } static int -ahc_linux_slave_configure(Scsi_Device *device) -{ - struct ahc_softc *ahc; - struct ahc_linux_device *dev; - u_long flags; +ahc_linux_target_alloc(struct scsi_target *starget) +{ + struct ahc_softc *ahc = + *((struct ahc_softc **)dev_to_shost(&starget->dev)->hostdata); + struct seeprom_config *sc = ahc->seep_config; + unsigned long flags; + struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget); + unsigned short scsirate; + struct ahc_devinfo devinfo; + struct ahc_initiator_tinfo *tinfo; + struct ahc_tmode_tstate *tstate; + char channel = starget->channel + 'A'; + unsigned int our_id = ahc->our_id; + unsigned int target_offset; - ahc = *((struct ahc_softc **)device->host->hostdata); - if (bootverbose) - printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id); - ahc_midlayer_entrypoint_lock(ahc, &flags); - /* - * Since Linux has attached to the device, configure - * it so we don't free and allocate the device - * structure on every command. - */ - dev = ahc_linux_get_device(ahc, device->channel, - device->id, device->lun, - /*alloc*/TRUE); - if (dev != NULL) { - dev->flags &= ~AHC_DEV_UNCONFIGURED; - dev->scsi_device = device; - ahc_linux_device_queue_depth(ahc, dev); + target_offset = starget->id; + if (starget->channel != 0) + target_offset += 8; + + if (starget->channel) + our_id = ahc->our_id_b; + + ahc_lock(ahc, &flags); + + BUG_ON(*ahc_targp != NULL); + + *ahc_targp = starget; + + if (sc) { + int maxsync = AHC_SYNCRATE_DT; + int ultra = 0; + int flags = sc->device_flags[target_offset]; + + if (ahc->flags & AHC_NEWEEPROM_FMT) { + if (flags & CFSYNCHISULTRA) + ultra = 1; + } else if (flags & CFULTRAEN) + ultra = 1; + /* AIC nutcase; 10MHz appears as ultra = 1, CFXFER = 0x04 + * change it to ultra=0, CFXFER = 0 */ + if(ultra && (flags & CFXFER) == 0x04) { + ultra = 0; + flags &= ~CFXFER; + } + + if ((ahc->features & AHC_ULTRA2) != 0) { + scsirate = (flags & CFXFER) | (ultra ? 0x8 : 0); + } else { + scsirate = (flags & CFXFER) << 4; + maxsync = ultra ? AHC_SYNCRATE_ULTRA : + AHC_SYNCRATE_FAST; + } + spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; + if (!(flags & CFSYNCH)) + spi_max_offset(starget) = 0; + spi_min_period(starget) = + ahc_find_period(ahc, scsirate, maxsync); + + tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id, + starget->id, &tstate); } - ahc_midlayer_entrypoint_unlock(ahc, &flags); - return (0); + ahc_compile_devinfo(&devinfo, our_id, starget->id, + CAM_LUN_WILDCARD, channel, + ROLE_INITIATOR); + ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0, + AHC_TRANS_GOAL, /*paused*/FALSE); + ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, + AHC_TRANS_GOAL, /*paused*/FALSE); + ahc_unlock(ahc, &flags); + + return 0; } static void -ahc_linux_slave_destroy(Scsi_Device *device) +ahc_linux_target_destroy(struct scsi_target *starget) { - struct ahc_softc *ahc; - struct ahc_linux_device *dev; - u_long flags; + struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget); + + *ahc_targp = NULL; +} + +static int +ahc_linux_slave_alloc(struct scsi_device *sdev) +{ + struct ahc_softc *ahc = + *((struct ahc_softc **)sdev->host->hostdata); + struct scsi_target *starget = sdev->sdev_target; + struct ahc_linux_device *dev; - ahc = *((struct ahc_softc **)device->host->hostdata); if (bootverbose) - printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id); - ahc_midlayer_entrypoint_lock(ahc, &flags); - dev = ahc_linux_get_device(ahc, device->channel, - device->id, device->lun, - /*alloc*/FALSE); + printf("%s: Slave Alloc %d\n", ahc_name(ahc), sdev->id); + + dev = scsi_transport_device_data(sdev); + memset(dev, 0, sizeof(*dev)); + /* - * 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. + * We start out life using untagged + * transactions of which we allow one. */ - if (dev != NULL - && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) { - dev->flags |= AHC_DEV_UNCONFIGURED; - if (TAILQ_EMPTY(&dev->busyq) - && dev->active == 0 - && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0) - ahc_linux_free_device(ahc, dev); - } - ahc_midlayer_entrypoint_unlock(ahc, &flags); + 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; + + spi_period(starget) = 0; + + return 0; } -#else -/* - * Sets the queue depth for each SCSI device hanging - * off the input host adapter. - */ -static void -ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs) + +static int +ahc_linux_slave_configure(struct scsi_device *sdev) { - Scsi_Device *device; - Scsi_Device *ldev; struct ahc_softc *ahc; - u_long flags; - ahc = *((struct ahc_softc **)host->hostdata); - ahc_lock(ahc, &flags); - for (device = scsi_devs; device != NULL; device = device->next) { + ahc = *((struct ahc_softc **)sdev->host->hostdata); - /* - * Watch out for duplicate devices. This works around - * some quirks in how the SCSI scanning code does its - * device management. - */ - for (ldev = scsi_devs; ldev != device; ldev = ldev->next) { - if (ldev->host == device->host - && ldev->channel == device->channel - && ldev->id == device->id - && ldev->lun == device->lun) - break; - } - /* Skip duplicate. */ - if (ldev != device) - continue; + if (bootverbose) + sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); - if (device->host == host) { - struct ahc_linux_device *dev; + ahc_linux_device_queue_depth(sdev); - /* - * Since Linux has attached to the device, configure - * it so we don't free and allocate the device - * structure on every command. - */ - dev = ahc_linux_get_device(ahc, device->channel, - device->id, device->lun, - /*alloc*/TRUE); - if (dev != NULL) { - dev->flags &= ~AHC_DEV_UNCONFIGURED; - dev->scsi_device = device; - ahc_linux_device_queue_depth(ahc, dev); - device->queue_depth = dev->openings - + dev->active; - if ((dev->flags & (AHC_DEV_Q_BASIC - | AHC_DEV_Q_TAGGED)) == 0) { - /* - * We allow the OS to queue 2 untagged - * transactions to us at any time even - * though we can only execute them - * serially on the controller/device. - * This should remove some latency. - */ - device->queue_depth = 2; - } - } - } - } - ahc_unlock(ahc, &flags); + /* Initial Domain Validation */ + if (!spi_initial_dv(sdev->sdev_target)) + spi_dv_device(sdev); + + return 0; } -#endif #if defined(__i386__) /* * Return the disk geometry for the given SCSI device. */ static int -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) { uint8_t *bh; -#else -ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) -{ - struct scsi_device *sdev = disk->device; - u_long capacity = disk->capacity; - struct buffer_head *bh; -#endif int heads; int sectors; int cylinders; @@ -1158,24 +655,13 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) u_int channel; ahc = *((struct ahc_softc **)sdev->host->hostdata); - channel = sdev->channel; + channel = sdev_channel(sdev); -#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); } @@ -1205,7 +691,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[]) * Abort the current SCSI command(s). */ static int -ahc_linux_abort(Scsi_Cmnd *cmd) +ahc_linux_abort(struct scsi_cmnd *cmd) { int error; @@ -1219,7 +705,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd) * Attempt to send a target reset message to the device that timed out. */ static int -ahc_linux_dev_reset(Scsi_Cmnd *cmd) +ahc_linux_dev_reset(struct scsi_cmnd *cmd) { int error; @@ -1233,18 +719,18 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd) * Reset the SCSI bus. */ static int -ahc_linux_bus_reset(Scsi_Cmnd *cmd) +ahc_linux_bus_reset(struct scsi_cmnd *cmd) { struct ahc_softc *ahc; - u_long s; int found; + unsigned long flags; ahc = *(struct ahc_softc **)cmd->device->host->hostdata; - ahc_midlayer_entrypoint_lock(ahc, &s); - found = ahc_reset_channel(ahc, cmd->device->channel + 'A', + + ahc_lock(ahc, &flags); + found = ahc_reset_channel(ahc, scmd_channel(cmd) + 'A', /*initiate reset*/TRUE); - ahc_linux_run_complete_queue(ahc); - ahc_midlayer_entrypoint_unlock(ahc, &s); + ahc_unlock(ahc, &flags); if (bootverbose) printf("%s: SCSI bus reset delivered. " @@ -1253,9 +739,10 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd) return SUCCESS; } -Scsi_Host_Template aic7xxx_driver_template = { +struct scsi_host_template aic7xxx_driver_template = { .module = THIS_MODULE, .name = "aic7xxx", + .proc_name = "aic7xxx", .proc_info = ahc_linux_proc_info, .info = ahc_linux_info, .queuecommand = ahc_linux_queue, @@ -1267,42 +754,17 @@ Scsi_Host_Template aic7xxx_driver_template = { #endif .can_queue = AHC_MAX_QUEUE, .this_id = -1, + .max_sectors = 8192, .cmd_per_lun = 2, .use_clustering = ENABLE_CLUSTERING, .slave_alloc = ahc_linux_slave_alloc, .slave_configure = ahc_linux_slave_configure, - .slave_destroy = ahc_linux_slave_destroy, + .target_alloc = ahc_linux_target_alloc, + .target_destroy = ahc_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, ahc_schedule_runq() calls this routine - * directly and ahc_schedule_runq() is called with our lock held. - */ -static void -ahc_runq_tasklet(unsigned long data) -{ - struct ahc_softc* ahc; - struct ahc_linux_device *dev; - u_long flags; - - ahc = (struct ahc_softc *)data; - ahc_lock(ahc, &flags); - while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) { - - TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links); - dev->flags &= ~AHC_DEV_ON_RUN_LIST; - ahc_linux_check_device_queue(ahc, dev); - /* Yeild to our interrupt handler */ - ahc_unlock(ahc, &flags); - ahc_lock(ahc, &flags); - } - ahc_unlock(ahc, &flags); -} - /******************************** Macros **************************************/ #define BUILD_SCSIID(ahc, cmd) \ ((((cmd)->device->id << TID_SHIFT) & TID) \ @@ -1348,37 +810,11 @@ int ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr, int flags, bus_dmamap_t *mapp) { - bus_dmamap_t map; - - map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT); - if (map == NULL) - return (ENOMEM); - /* - * Although we can dma data above 4GB, our - * "consistent" memory is below 4GB for - * space efficiency reasons (only need a 4byte - * address). For this reason, we have to reset - * our dma mask when doing allocations. - */ - if (ahc->dev_softc != NULL) - if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) { - printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n"); - kfree(map); - return (ENODEV); - } *vaddr = pci_alloc_consistent(ahc->dev_softc, - dmat->maxsize, &map->bus_addr); - if (ahc->dev_softc != NULL) - if (pci_set_dma_mask(ahc->dev_softc, - ahc->platform_data->hw_dma_mask)) { - printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n"); - kfree(map); - return (ENODEV); - } + dmat->maxsize, mapp); if (*vaddr == NULL) - return (ENOMEM); - *mapp = map; - return(0); + return ENOMEM; + return 0; } void @@ -1386,7 +822,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat, void* vaddr, bus_dmamap_t map) { pci_free_consistent(ahc->dev_softc, dmat->maxsize, - vaddr, map->bus_addr); + vaddr, map); } int @@ -1400,7 +836,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map, */ bus_dma_segment_t stack_sg; - stack_sg.ds_addr = map->bus_addr; + stack_sg.ds_addr = map; stack_sg.ds_len = dmat->maxsize; cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); return (0); @@ -1409,12 +845,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map, void ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map) { - /* - * The map may is NULL in our < 2.3.X implementation. - * Now it's 2.6.5, but just in case... - */ - BUG_ON(map == NULL); - free(map, M_DEVBUF); } int @@ -1424,99 +854,6 @@ ahc_dmamap_unload(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map) return (0); } -/********************* Platform Dependent Functions ***************************/ -/* - * Compare "left hand" softc with "right hand" softc, returning: - * < 0 - lahc has a lower priority than rahc - * 0 - Softcs are equal - * > 0 - lahc has a higher priority than rahc - */ -int -ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc) -{ - int value; - int rvalue; - int lvalue; - - /* - * Under Linux, cards are ordered as follows: - * 1) VLB/EISA BIOS enabled devices sorted by BIOS address. - * 2) PCI devices with BIOS enabled sorted by bus/slot/func. - * 3) All remaining VLB/EISA devices sorted by ioport. - * 4) All remaining PCI devices sorted by bus/slot/func. - */ - value = (lahc->flags & AHC_BIOS_ENABLED) - - (rahc->flags & AHC_BIOS_ENABLED); - if (value != 0) - /* Controllers with BIOS enabled have a *higher* priority */ - return (value); - - /* - * Same BIOS setting, now sort based on bus type. - * EISA and VL controllers sort together. EISA/VL - * have higher priority than PCI. - */ - rvalue = (rahc->chip & AHC_BUS_MASK); - if (rvalue == AHC_VL) - rvalue = AHC_EISA; - lvalue = (lahc->chip & AHC_BUS_MASK); - if (lvalue == AHC_VL) - lvalue = AHC_EISA; - value = rvalue - lvalue; - if (value != 0) - return (value); - - /* Still equal. Sort by BIOS address, ioport, or bus/slot/func. */ - switch (rvalue) { -#ifdef CONFIG_PCI - case AHC_PCI: - { - char primary_channel; - - if (aic7xxx_reverse_scan != 0) - value = ahc_get_pci_bus(lahc->dev_softc) - - ahc_get_pci_bus(rahc->dev_softc); - else - value = ahc_get_pci_bus(rahc->dev_softc) - - ahc_get_pci_bus(lahc->dev_softc); - if (value != 0) - break; - if (aic7xxx_reverse_scan != 0) - value = ahc_get_pci_slot(lahc->dev_softc) - - ahc_get_pci_slot(rahc->dev_softc); - else - value = ahc_get_pci_slot(rahc->dev_softc) - - ahc_get_pci_slot(lahc->dev_softc); - if (value != 0) - break; - /* - * On multi-function devices, the user can choose - * to have function 1 probed before function 0. - * Give whichever channel is the primary channel - * the highest priority. - */ - primary_channel = (lahc->flags & AHC_PRIMARY_CHANNEL) + 'A'; - value = -1; - if (lahc->channel == primary_channel) - value = 1; - break; - } -#endif - case AHC_EISA: - if ((rahc->flags & AHC_BIOS_ENABLED) != 0) { - value = rahc->platform_data->bios_address - - lahc->platform_data->bios_address; - } else { - value = rahc->bsh.ioport - - lahc->bsh.ioport; - } - break; - default: - panic("ahc_softc_sort: invalid bus type"); - } - return (value); -} - static void ahc_linux_setup_tag_info_global(char *p) { @@ -1525,7 +862,7 @@ ahc_linux_setup_tag_info_global(char *p) tags = simple_strtoul(p + 1, NULL, 0) & 0xff; printf("Setting Global Tags= %d\n", tags); - for (i = 0; i < NUM_ELEMENTS(aic7xxx_tag_info); i++) { + for (i = 0; i < ARRAY_SIZE(aic7xxx_tag_info); i++) { for (j = 0; j < AHC_NUM_TARGETS; j++) { aic7xxx_tag_info[i].tag_commands[j] = tags; } @@ -1537,7 +874,7 @@ ahc_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) { if ((instance >= 0) && (targ >= 0) - && (instance < NUM_ELEMENTS(aic7xxx_tag_info)) + && (instance < ARRAY_SIZE(aic7xxx_tag_info)) && (targ < AHC_NUM_TARGETS)) { aic7xxx_tag_info[instance].tag_commands[targ] = value & 0xff; if (bootverbose) @@ -1545,16 +882,84 @@ ahc_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) } } -static void -ahc_linux_setup_dv(u_long arg, int instance, int targ, int32_t value) +static char * +ahc_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'}; - if ((instance >= 0) - && (instance < NUM_ELEMENTS(aic7xxx_dv_settings))) { - aic7xxx_dv_settings[instance] = value; - if (bootverbose) - printf("dv[%d] = %d\n", instance, value); + /* 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); } /* @@ -1580,9 +985,6 @@ aic7xxx_setup(char *s) #ifdef AHC_DEBUG { "debug", &ahc_debug }, #endif - { "reverse_scan", &aic7xxx_reverse_scan }, - { "no_probe", &aic7xxx_probe_eisa_vl }, - { "probe_eisa_vl", &aic7xxx_probe_eisa_vl }, { "periodic_otag", &aic7xxx_periodic_otag }, { "pci_parity", &aic7xxx_pci_parity }, { "seltime", &aic7xxx_seltime }, @@ -1594,7 +996,7 @@ aic7xxx_setup(char *s) end = strchr(s, '\0'); /* - * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS + * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE * will never be 0 in this case. */ n = 0; @@ -1602,23 +1004,20 @@ aic7xxx_setup(char *s) while ((p = strsep(&s, ",.")) != NULL) { if (*p == '\0') continue; - for (i = 0; i < NUM_ELEMENTS(options); i++) { + for (i = 0; i < ARRAY_SIZE(options); i++) { n = strlen(options[i].name); if (strncmp(options[i].name, p, n) == 0) break; } - if (i == NUM_ELEMENTS(options)) + if (i == ARRAY_SIZE(options)) continue; if (strncmp(p, "global_tag_depth", n) == 0) { ahc_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 = ahc_parse_brace_option("tag_info", p + n, end, 2, ahc_linux_setup_tag_info, 0); - } else if (strncmp(p, "dv", n) == 0) { - s = aic_parse_brace_option("dv", p + n, end, 1, - ahc_linux_setup_dv, 0); } else if (p[n] == ':') { *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); } else if (strncmp(p, "verbose", n) == 0) { @@ -1635,13 +1034,13 @@ __setup("aic7xxx=", aic7xxx_setup); uint32_t aic7xxx_verbose; int -ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) +ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template) { - char buf[80]; - struct Scsi_Host *host; + char buf[80]; + struct Scsi_Host *host; char *new_name; - u_long s; - u_int targ_offset; + u_long s; + int retval; template->name = ahc->description; host = scsi_host_alloc(template, sizeof(struct ahc_softc *)); @@ -1649,12 +1048,6 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) return (ENOMEM); *((struct ahc_softc **)host->hostdata) = ahc; - ahc_lock(ahc, &s); -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - scsi_assign_lock(host, &ahc->platform_data->spin_lock); -#elif AHC_SCSI_HAS_HOST_LOCK != 0 - host->lock = &ahc->platform_data->spin_lock; -#endif ahc->platform_data->host = host; host->can_queue = AHC_MAX_QUEUE; host->cmd_per_lun = 2; @@ -1665,7 +1058,9 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) host->max_lun = AHC_NUM_LUNS; host->max_channel = (ahc->features & AHC_TWIN) ? 1 : 0; host->sg_tablesize = AHC_NSEG; - ahc_set_unit(ahc, ahc_linux_next_unit()); + ahc_lock(ahc, &s); + ahc_set_unit(ahc, ahc_linux_unit++); + ahc_unlock(ahc, &s); sprintf(buf, "scsi%d", host->host_no); new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); if (new_name != NULL) { @@ -1673,98 +1068,21 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) ahc_set_name(ahc, new_name); } host->unique_id = ahc->unit; -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - scsi_set_pci_device(host, ahc->dev_softc); -#endif ahc_linux_initialize_scsi_bus(ahc); - ahc_unlock(ahc, &s); - ahc->platform_data->dv_pid = kernel_thread(ahc_linux_dv_thread, ahc, 0); - ahc_lock(ahc, &s); - if (ahc->platform_data->dv_pid < 0) { - printf("%s: Failed to create DV thread, error= %d\n", - ahc_name(ahc), ahc->platform_data->dv_pid); - return (-ahc->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 (targ_offset = 0; - targ_offset < host->max_id * (host->max_channel + 1); - targ_offset++) { - u_int channel; - u_int target; - - channel = 0; - target = targ_offset; - if (target > 7 - && (ahc->features & AHC_TWIN) != 0) { - channel = 1; - target &= 0x7; - } - /* - * 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 ((channel == 0 && target == ahc->our_id) - || (channel == 1 && target == ahc->our_id_b)) - continue; - - ahc_linux_alloc_target(ahc, channel, target); - } ahc_intr_enable(ahc, TRUE); - ahc_linux_start_dv(ahc); - ahc_unlock(ahc, &s); - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */ - scsi_scan_host(host); -#endif - return (0); -} - -uint64_t -ahc_linux_get_memsize(void) -{ - struct sysinfo si; - si_meminfo(&si); - return ((uint64_t)si.totalram << PAGE_SHIFT); -} + host->transportt = ahc_linux_transport_template; -/* - * 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 -ahc_linux_next_unit(void) -{ - struct ahc_softc *ahc; - int unit; - - unit = 0; -retry: - TAILQ_FOREACH(ahc, &ahc_tailq, links) { - if (ahc->unit == unit) { - unit++; - goto retry; - } + retval = scsi_add_host(host, + (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); + if (retval) { + printk(KERN_WARNING "aic7xxx: scsi_add_host failed\n"); + scsi_host_put(host); + return retval; } - return (unit); + + scsi_scan_host(host); + return 0; } /* @@ -1777,10 +1095,13 @@ ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc) { int i; int numtarg; + unsigned long s; i = 0; numtarg = 0; + ahc_lock(ahc, &s); + if (aic7xxx_no_reset != 0) ahc->flags &= ~(AHC_RESET_BUS_A|AHC_RESET_BUS_B); @@ -1827,16 +1148,12 @@ ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc) ahc_update_neg_request(ahc, &devinfo, tstate, tinfo, AHC_NEG_ALWAYS); } + ahc_unlock(ahc, &s); /* Give the bus some time to recover */ if ((ahc->flags & (AHC_RESET_BUS_A|AHC_RESET_BUS_B)) != 0) { ahc_linux_freeze_simq(ahc); - init_timer(&ahc->platform_data->reset_timer); - ahc->platform_data->reset_timer.data = (u_long)ahc; - ahc->platform_data->reset_timer.expires = - jiffies + (AIC7XXX_RESET_DELAY * HZ)/1000; - ahc->platform_data->reset_timer.function = - ahc_linux_release_simq; - add_timer(&ahc->platform_data->reset_timer); + msleep(AIC7XXX_RESET_DELAY); + ahc_linux_release_simq(ahc); } } @@ -1849,21 +1166,8 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg) if (ahc->platform_data == NULL) return (ENOMEM); memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data)); - TAILQ_INIT(&ahc->platform_data->completeq); - TAILQ_INIT(&ahc->platform_data->device_runq); ahc->platform_data->irq = AHC_LINUX_NOIRQ; - ahc->platform_data->hw_dma_mask = 0xFFFFFFFF; ahc_lockinit(ahc); - ahc_done_lockinit(ahc); - init_timer(&ahc->platform_data->completeq_timer); - ahc->platform_data->completeq_timer.data = (u_long)ahc; - ahc->platform_data->completeq_timer.function = - (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue; - init_MUTEX_LOCKED(&ahc->platform_data->eh_sem); - init_MUTEX_LOCKED(&ahc->platform_data->dv_sem); - init_MUTEX_LOCKED(&ahc->platform_data->dv_cmd_sem); - tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet, - (unsigned long)ahc); ahc->seltime = (aic7xxx_seltime & 0x3) << 4; ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4; if (aic7xxx_pci_parity == 0) @@ -1875,39 +1179,15 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg) void ahc_platform_free(struct ahc_softc *ahc) { - struct ahc_linux_target *targ; - struct ahc_linux_device *dev; - int i, j; + struct scsi_target *starget; + int i; if (ahc->platform_data != NULL) { - del_timer_sync(&ahc->platform_data->completeq_timer); - ahc_linux_kill_dv_thread(ahc); - tasklet_kill(&ahc->platform_data->runq_tasklet); - if (ahc->platform_data->host != NULL) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - scsi_remove_host(ahc->platform_data->host); -#endif - scsi_host_put(ahc->platform_data->host); - } - /* destroy all of the device and target objects */ for (i = 0; i < AHC_NUM_TARGETS; i++) { - targ = ahc->platform_data->targets[i]; - if (targ != NULL) { - /* Keep target around through the loop. */ - targ->refcount++; - for (j = 0; j < AHC_NUM_LUNS; j++) { - - if (targ->devices[j] == NULL) - continue; - dev = targ->devices[j]; - ahc_linux_free_device(ahc, dev); - } - /* - * Forcibly free the target now that - * all devices are gone. - */ - ahc_linux_free_target(ahc, targ); + starget = ahc->platform_data->starget[i]; + if (starget != NULL) { + ahc->platform_data->starget[i] = NULL; } } @@ -1922,16 +1202,10 @@ ahc_platform_free(struct ahc_softc *ahc) release_mem_region(ahc->platform_data->mem_busaddr, 0x1000); } -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) - /* - * In 2.4 we detach from the scsi midlayer before the PCI - * layer invokes our remove callback. No per-instance - * detach is provided, so we must reach inside the PCI - * subsystem's internals and detach our driver manually. - */ - if (ahc->dev_softc != NULL) - ahc->dev_softc->driver = NULL; -#endif + + if (ahc->platform_data->host) + scsi_host_put(ahc->platform_data->host); + free(ahc->platform_data, M_DEVBUF); } } @@ -1946,18 +1220,17 @@ ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb) } void -ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, - ahc_queue_alg alg) +ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev, + struct ahc_devinfo *devinfo, ahc_queue_alg alg) { struct ahc_linux_device *dev; int was_queuing; int now_queuing; - dev = ahc_linux_get_device(ahc, devinfo->channel - 'A', - devinfo->target, - devinfo->lun, /*alloc*/FALSE); - if (dev == NULL) + if (sdev == NULL) return; + dev = scsi_transport_device_data(sdev); + was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED); switch (alg) { default: @@ -2008,1763 +1281,296 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, dev->maxtags = 0; dev->openings = 1 - dev->active; } -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - if (dev->scsi_device != NULL) { - switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) { - case AHC_DEV_Q_BASIC: - scsi_adjust_queue_depth(dev->scsi_device, - MSG_SIMPLE_TASK, - dev->openings + dev->active); - break; - case AHC_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 & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) { + case AHC_DEV_Q_BASIC: + scsi_set_tag_type(sdev, MSG_SIMPLE_TAG); + scsi_activate_tcq(sdev, dev->openings + dev->active); + break; + case AHC_DEV_Q_TAGGED: + scsi_set_tag_type(sdev, MSG_ORDERED_TAG); + 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, 2); + break; } -#endif } int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel, int lun, u_int tag, role_t role, uint32_t status) { - int chan; - int maxchan; - int targ; - int maxtarg; - int clun; - int maxlun; - int count; - - if (tag != SCB_LIST_NULL) - return (0); - - chan = 0; - if (channel != ALL_CHANNELS) { - chan = channel - 'A'; - maxchan = chan + 1; - } else { - maxchan = (ahc->features & AHC_TWIN) ? 2 : 1; - } - targ = 0; - if (target != CAM_TARGET_WILDCARD) { - targ = target; - maxtarg = targ + 1; - } else { - maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8; - } - clun = 0; - if (lun != CAM_LUN_WILDCARD) { - clun = lun; - maxlun = clun + 1; - } else { - maxlun = AHC_NUM_LUNS; - } - - count = 0; - for (; chan < maxchan; chan++) { - - for (; targ < maxtarg; targ++) { - - for (; clun < maxlun; clun++) { - struct ahc_linux_device *dev; - struct ahc_busyq *busyq; - struct ahc_cmd *acmd; - - dev = ahc_linux_get_device(ahc, chan, - targ, clun, - /*alloc*/FALSE); - if (dev == NULL) - continue; - - busyq = &dev->busyq; - while ((acmd = TAILQ_FIRST(busyq)) != NULL) { - Scsi_Cmnd *cmd; - - cmd = &acmd_scsi_cmd(acmd); - TAILQ_REMOVE(busyq, acmd, - acmd_links.tqe); - count++; - cmd->result = status << 16; - ahc_linux_queue_cmd_complete(ahc, cmd); - } - } - } - } - - return (count); -} - -static void -ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc) -{ - u_long flags; - - ahc_lock(ahc, &flags); - del_timer(&ahc->platform_data->completeq_timer); - ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER; - ahc_linux_run_complete_queue(ahc); - ahc_unlock(ahc, &flags); + return 0; } -static void -ahc_linux_start_dv(struct ahc_softc *ahc) +static u_int +ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) { + static int warned_user; + u_int tags; - /* - * Freeze the simq and signal ahc_linux_queue to not let any - * more commands through. - */ - if ((ahc->platform_data->flags & AHC_DV_ACTIVE) == 0) { -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) - printf("%s: Waking DV thread\n", ahc_name(ahc)); -#endif + tags = 0; + if ((ahc->user_discenable & devinfo->target_mask) != 0) { + if (ahc->unit >= ARRAY_SIZE(aic7xxx_tag_info)) { + if (warned_user == 0) { - ahc->platform_data->flags |= AHC_DV_ACTIVE; - ahc_linux_freeze_simq(ahc); + printf(KERN_WARNING +"aic7xxx: WARNING: Insufficient tag_info instances\n" +"aic7xxx: for installed controllers. Using defaults\n" +"aic7xxx: Please update the aic7xxx_tag_info array in\n" +"aic7xxx: the aic7xxx_osm..c source file.\n"); + warned_user++; + } + tags = AHC_MAX_QUEUE; + } else { + adapter_tag_info_t *tag_info; - /* Wake up the DV kthread */ - up(&ahc->platform_data->dv_sem); + tag_info = &aic7xxx_tag_info[ahc->unit]; + tags = tag_info->tag_commands[devinfo->target_offset]; + if (tags > AHC_MAX_QUEUE) + tags = AHC_MAX_QUEUE; + } } + return (tags); } +/* + * Determines the queue depth for a given device. + */ static void -ahc_linux_kill_dv_thread(struct ahc_softc *ahc) +ahc_linux_device_queue_depth(struct scsi_device *sdev) { - u_long s; - - ahc_lock(ahc, &s); - if (ahc->platform_data->dv_pid != 0) { - ahc->platform_data->flags |= AHC_DV_SHUTDOWN; - ahc_unlock(ahc, &s); - up(&ahc->platform_data->dv_sem); + struct ahc_devinfo devinfo; + u_int tags; + struct ahc_softc *ahc = *((struct ahc_softc **)sdev->host->hostdata); - /* - * 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(&ahc->platform_data->eh_sem); + ahc_compile_devinfo(&devinfo, + sdev->sdev_target->channel == 0 + ? ahc->our_id : ahc->our_id_b, + sdev->sdev_target->id, sdev->lun, + sdev->sdev_target->channel == 0 ? 'A' : 'B', + ROLE_INITIATOR); + tags = ahc_linux_user_tagdepth(ahc, &devinfo); + if (tags != 0 && sdev->tagged_supported != 0) { - /* - * Mark the dv thread as already dead. This - * avoids attempting to kill it a second time. - * This is necessary because we must kill the - * DV thread before calling ahc_free() in the - * module shutdown case to avoid bogus locking - * in the SCSI mid-layer, but we ahc_free() is - * called without killing the DV thread in the - * instance detach case, so ahc_platform_free() - * calls us again to verify that the DV thread - * is dead. - */ - ahc->platform_data->dv_pid = 0; + ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_TAGGED); + ahc_send_async(ahc, devinfo.channel, devinfo.target, + devinfo.lun, AC_TRANSFER_NEG); + ahc_print_devinfo(ahc, &devinfo); + printf("Tagged Queuing enabled. Depth %d\n", tags); } else { - ahc_unlock(ahc, &s); + ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_NONE); + ahc_send_async(ahc, devinfo.channel, devinfo.target, + devinfo.lun, AC_TRANSFER_NEG); } } static int -ahc_linux_dv_thread(void *data) +ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev, + struct scsi_cmnd *cmd) { - struct ahc_softc *ahc; - int target; - u_long s; - - ahc = (struct ahc_softc *)data; + struct scb *scb; + struct hardware_scb *hscb; + struct ahc_initiator_tinfo *tinfo; + struct ahc_tmode_tstate *tstate; + uint16_t mask; + struct scb_tailq *untagged_q = NULL; -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) - printf("Launching DV Thread\n"); -#endif + /* + * Schedule us to run later. The only reason we are not + * running is because the whole controller Q is frozen. + */ + if (ahc->platform_data->qfrozen != 0) + return SCSI_MLQUEUE_HOST_BUSY; /* - * Complete thread creation. + * We only allow one untagged transaction + * per target in the initiator role unless + * we are storing a full busy target *lun* + * table in SCB space. */ - lock_kernel(); -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) + if (!blk_rq_tagged(cmd->request) + && (ahc->features & AHC_SCB_BTT) == 0) { + int target_offset; + + target_offset = cmd->device->id + cmd->device->channel * 8; + untagged_q = &(ahc->untagged_queues[target_offset]); + if (!TAILQ_EMPTY(untagged_q)) + /* if we're already executing an untagged command + * we're busy to another */ + return SCSI_MLQUEUE_DEVICE_BUSY; + } + /* - * Don't care about any signals. + * Get an scb to use. */ - siginitsetinv(¤t->blocked, 0); + scb = ahc_get_scb(ahc); + if (!scb) + return SCSI_MLQUEUE_HOST_BUSY; - daemonize(); - sprintf(current->comm, "ahc_dv_%d", ahc->unit); -#else - daemonize("ahc_dv_%d", ahc->unit); - current->flags |= PF_FREEZE; -#endif - unlock_kernel(); + scb->io_ctx = cmd; + scb->platform_data->dev = dev; + hscb = scb->hscb; + cmd->host_scribble = (char *)scb; - while (1) { - /* - * Use down_interruptible() rather than down() to - * avoid inclusion in the load average. - */ - down_interruptible(&ahc->platform_data->dv_sem); + /* + * Fill out basics of the HSCB. + */ + hscb->control = 0; + hscb->scsiid = BUILD_SCSIID(ahc, cmd); + hscb->lun = cmd->device->lun; + mask = SCB_GET_TARGET_MASK(ahc, scb); + tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb), + SCB_GET_OUR_ID(scb), + SCB_GET_TARGET(ahc, scb), &tstate); + hscb->scsirate = tinfo->scsirate; + hscb->scsioffset = tinfo->curr.offset; + if ((tstate->ultraenb & mask) != 0) + hscb->control |= ULTRAENB; + + if ((ahc->user_discenable & mask) != 0) + hscb->control |= DISCENB; + + if ((tstate->auto_negotiate & mask) != 0) { + scb->flags |= SCB_AUTO_NEGOTIATE; + scb->hscb->control |= MK_MESSAGE; + } - /* Check to see if we've been signaled to exit */ - ahc_lock(ahc, &s); - if ((ahc->platform_data->flags & AHC_DV_SHUTDOWN) != 0) { - ahc_unlock(ahc, &s); - break; + if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) { + int msg_bytes; + uint8_t tag_msgs[2]; + + msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); + if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { + hscb->control |= tag_msgs[0]; + if (tag_msgs[0] == MSG_ORDERED_TASK) + dev->commands_since_idle_or_otag = 0; + } else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH + && (dev->flags & AHC_DEV_Q_TAGGED) != 0) { + hscb->control |= MSG_ORDERED_TASK; + dev->commands_since_idle_or_otag = 0; + } else { + hscb->control |= MSG_SIMPLE_TASK; } - ahc_unlock(ahc, &s); + } -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) - printf("%s: Beginning Domain Validation\n", - ahc_name(ahc)); -#endif + hscb->cdb_len = cmd->cmd_len; + if (hscb->cdb_len <= 12) { + memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len); + } else { + memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len); + scb->flags |= SCB_CDB32_PTR; + } + scb->platform_data->xfer_len = 0; + ahc_set_residual(scb, 0); + ahc_set_sense_residual(scb, 0); + scb->sg_count = 0; + if (cmd->use_sg != 0) { + struct ahc_dma_seg *sg; + struct scatterlist *cur_seg; + struct scatterlist *end_seg; + int nseg; + + cur_seg = (struct scatterlist *)cmd->request_buffer; + nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg, + cmd->sc_data_direction); + end_seg = cur_seg + nseg; + /* Copy the segments into the SG list. */ + sg = scb->sg_list; /* - * Wait for any pending commands to drain before proceeding. - */ - ahc_lock(ahc, &s); - while (LIST_FIRST(&ahc->pending_scbs) != NULL) { - ahc->platform_data->flags |= AHC_DV_WAIT_SIMQ_EMPTY; - ahc_unlock(ahc, &s); - down_interruptible(&ahc->platform_data->dv_sem); - ahc_lock(ahc, &s); + * The sg_count may be larger than nseg if + * a transfer crosses a 32bit page. + */ + while (cur_seg < end_seg) { + dma_addr_t addr; + bus_size_t len; + int consumed; + + addr = sg_dma_address(cur_seg); + len = sg_dma_len(cur_seg); + consumed = ahc_linux_map_seg(ahc, scb, + sg, addr, len); + sg += consumed; + scb->sg_count += consumed; + cur_seg++; } + sg--; + sg->len |= ahc_htole32(AHC_DMA_LAST_SEG); /* - * Wait for the SIMQ to be released so that DV is the - * only reason the queue is frozen. + * Reset the sg list pointer. */ - while (AHC_DV_SIMQ_FROZEN(ahc) == 0) { - ahc->platform_data->flags |= AHC_DV_WAIT_SIMQ_RELEASE; - ahc_unlock(ahc, &s); - down_interruptible(&ahc->platform_data->dv_sem); - ahc_lock(ahc, &s); - } - ahc_unlock(ahc, &s); - - for (target = 0; target < AHC_NUM_TARGETS; target++) - ahc_linux_dv_target(ahc, target); - - ahc_lock(ahc, &s); - ahc->platform_data->flags &= ~AHC_DV_ACTIVE; - ahc_unlock(ahc, &s); - + scb->hscb->sgptr = + ahc_htole32(scb->sg_list_phys | SG_FULL_RESID); + /* - * Release the SIMQ so that normal commands are - * allowed to continue on the bus. + * Copy the first SG into the "current" + * data pointer area. */ - ahc_linux_release_simq((u_long)ahc); - } - up(&ahc->platform_data->eh_sem); - return (0); -} - -#define AHC_LINUX_DV_INQ_SHORT_LEN 36 -#define AHC_LINUX_DV_INQ_LEN 256 -#define AHC_LINUX_DV_TIMEOUT (HZ / 4) - -#define AHC_SET_DV_STATE(ahc, targ, newstate) \ - ahc_set_dv_state(ahc, targ, newstate, __LINE__) - -static __inline void -ahc_set_dv_state(struct ahc_softc *ahc, struct ahc_linux_target *targ, - ahc_dv_state newstate, u_int line) -{ - ahc_dv_state oldstate; - - oldstate = targ->dv_state; -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) - printf("%s:%d: Going from state %d to state %d\n", - ahc_name(ahc), line, oldstate, newstate); -#endif - - if (oldstate == newstate) - targ->dv_state_retry++; - else - targ->dv_state_retry = 0; - targ->dv_state = newstate; -} - -static void -ahc_linux_dv_target(struct ahc_softc *ahc, u_int target_offset) -{ - struct ahc_devinfo devinfo; - struct ahc_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; - ahc_lock(ahc, &s); - targ = ahc->platform_data->targets[target_offset]; - if (targ == NULL || (targ->flags & AHC_DV_REQUIRED) == 0) { - ahc_unlock(ahc, &s); - return; - } - ahc_compile_devinfo(&devinfo, - targ->channel == 0 ? ahc->our_id : ahc->our_id_b, - targ->target, /*lun*/0, targ->channel + 'A', - ROLE_INITIATOR); -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, &devinfo); - printf("Performing DV\n"); - } -#endif - - ahc_unlock(ahc, &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 = ahc->platform_data->host; - scsi_dev->id = devinfo.target; - scsi_dev->lun = devinfo.lun; - scsi_dev->channel = devinfo.channel - 'A'; - ahc->platform_data->dv_scsi_dev = scsi_dev; - - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_INQ_SHORT_ASYNC); - - while (targ->dv_state != AHC_DV_STATE_EXIT) { - timeout = AHC_LINUX_DV_TIMEOUT; - switch (targ->dv_state) { - case AHC_DV_STATE_INQ_SHORT_ASYNC: - case AHC_DV_STATE_INQ_ASYNC: - case AHC_DV_STATE_INQ_ASYNC_VERIFY: - /* - * Set things to async narrow to reduce the - * chance that the INQ will fail. - */ - ahc_lock(ahc, &s); - ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0, - AHC_TRANS_GOAL, /*paused*/FALSE); - ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, - AHC_TRANS_GOAL, /*paused*/FALSE); - ahc_unlock(ahc, &s); - timeout = 10 * HZ; - targ->flags &= ~AHC_INQ_VALID; - /* FALLTHROUGH */ - case AHC_DV_STATE_INQ_VERIFY: - { - u_int inq_len; - - if (targ->dv_state == AHC_DV_STATE_INQ_SHORT_ASYNC) - inq_len = AHC_LINUX_DV_INQ_SHORT_LEN; - else - inq_len = targ->inq_data->additional_length + 5; - ahc_linux_dv_inq(ahc, cmd, &devinfo, targ, inq_len); - break; - } - case AHC_DV_STATE_TUR: - case AHC_DV_STATE_BUSY: - timeout = 5 * HZ; - ahc_linux_dv_tur(ahc, cmd, &devinfo); - break; - case AHC_DV_STATE_REBD: - ahc_linux_dv_rebd(ahc, cmd, &devinfo, targ); - break; - case AHC_DV_STATE_WEB: - ahc_linux_dv_web(ahc, cmd, &devinfo, targ); - break; - - case AHC_DV_STATE_REB: - ahc_linux_dv_reb(ahc, cmd, &devinfo, targ); - break; - - case AHC_DV_STATE_SU: - ahc_linux_dv_su(ahc, cmd, &devinfo, targ); - timeout = 50 * HZ; - break; - - default: - ahc_print_devinfo(ahc, &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 AHC_DEBUG - if ((ahc_debug & AHC_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, ahc_linux_dv_timeout); - /* - * In 2.5.X, it is assumed that all calls from the - * "midlayer" (which we are emulating) will have the - * ahc host lock held. For other kernels, the - * io_request_lock must be held. - */ -#if AHC_SCSI_HAS_HOST_LOCK != 0 - ahc_lock(ahc, &s); -#else - spin_lock_irqsave(&io_request_lock, s); -#endif - ahc_linux_queue(cmd, ahc_linux_dv_complete); -#if AHC_SCSI_HAS_HOST_LOCK != 0 - ahc_unlock(ahc, &s); -#else - spin_unlock_irqrestore(&io_request_lock, s); -#endif - down_interruptible(&ahc->platform_data->dv_cmd_sem); - /* - * Wait for the SIMQ to be released so that DV is the - * only reason the queue is frozen. - */ - ahc_lock(ahc, &s); - while (AHC_DV_SIMQ_FROZEN(ahc) == 0) { - ahc->platform_data->flags |= AHC_DV_WAIT_SIMQ_RELEASE; - ahc_unlock(ahc, &s); - down_interruptible(&ahc->platform_data->dv_sem); - ahc_lock(ahc, &s); - } - ahc_unlock(ahc, &s); - - ahc_linux_dv_transition(ahc, cmd, &devinfo, targ); - } - -out: - if ((targ->flags & AHC_INQ_VALID) != 0 - && ahc_linux_get_device(ahc, 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. - */ - ahc_linux_filter_inquiry(ahc, &devinfo); - if ((targ->flags & (AHC_BASIC_DV|AHC_ENHANCED_DV)) != 0) { - ahc_print_devinfo(ahc, &devinfo); - printf("DV failed to configure device. " - "Please file a bug report against " - "this driver.\n"); - } - } - - if (cmd != NULL) - free(cmd, M_DEVBUF); - - if (ahc->platform_data->dv_scsi_dev != NULL) { - free(ahc->platform_data->dv_scsi_dev, M_DEVBUF); - ahc->platform_data->dv_scsi_dev = NULL; - } - - ahc_lock(ahc, &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 &= ~AHC_DV_REQUIRED; - if (targ->refcount == 0) - ahc_linux_free_target(ahc, targ); - ahc_unlock(ahc, &s); -} - -static void -ahc_linux_dv_transition(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ) -{ - u_int32_t status; - - status = aic_error_action(cmd, targ->inq_data, - ahc_cmd_get_transaction_status(cmd), - ahc_cmd_get_scsi_status(cmd)); - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Entering ahc_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 AHC_DV_STATE_INQ_SHORT_ASYNC: - case AHC_DV_STATE_INQ_ASYNC: - switch (status & SS_MASK) { - case SS_NOP: - { - AHC_SET_DV_STATE(ahc, targ, targ->dv_state+1); - break; - } - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - if ((status & SS_ERRMASK) == EBUSY) - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } - break; - case AHC_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, - AHC_LINUX_DV_INQ_LEN) != 0) { - /* - * Inquiry data must have changed. - * Try from the top again. - */ - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - } - - AHC_SET_DV_STATE(ahc, targ, targ->dv_state+1); - targ->flags |= AHC_INQ_VALID; - if (ahc_linux_user_dv_setting(ahc) == 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 |= AHC_BASIC_DV; - break; - case SID_SPI_CLOCK_DT: - case SID_SPI_CLOCK_DT_ST: - targ->flags |= AHC_ENHANCED_DV; - break; - } - break; - } - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - - if ((status & SS_ERRMASK) == EBUSY) - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } - break; - case AHC_DV_STATE_INQ_VERIFY: - switch (status & SS_MASK) { - case SS_NOP: - { - - if (memcmp(targ->inq_data, targ->dv_buffer, - AHC_LINUX_DV_INQ_LEN) == 0) { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - int i; - - ahc_print_devinfo(ahc, devinfo); - printf("Inquiry buffer mismatch:"); - for (i = 0; i < AHC_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 (ahc_linux_fallback(ahc, devinfo) != 0) { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - break; - } - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahc_linux_fallback(ahc, devinfo) != 0) { - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - } else if ((status & SS_ERRMASK) == EBUSY) - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_BUSY); - if (targ->dv_state_retry < 10) - break; - /* FALLTHROUGH */ - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Failed DV inquiry, skipping\n"); - } -#endif - break; - } - break; - - case AHC_DV_STATE_TUR: - switch (status & SS_MASK) { - case SS_NOP: - if ((targ->flags & AHC_BASIC_DV) != 0) { - ahc_linux_filter_inquiry(ahc, devinfo); - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_VERIFY); - } else if ((targ->flags & AHC_ENHANCED_DV) != 0) { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_REBD); - } else { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - } - break; - case SS_RETRY: - case SS_TUR: - if ((status & SS_ERRMASK) == EBUSY) { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_BUSY); - break; - } - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahc_linux_fallback(ahc, devinfo) != 0) { - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_EXIT); - break; - } - /* - * Do not count "falling back" - * against our retries. - */ - targ->dv_state_retry = 0; - } - if (targ->dv_state_retry >= 10) { -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("DV TUR reties exhausted\n"); - } -#endif - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - if (status & SSQ_DELAY) - ssleep(1); - - break; - case SS_START: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_SU); - break; - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - break; - - case AHC_DV_STATE_REBD: - switch (status & SS_MASK) { - case SS_NOP: - { - uint32_t echo_size; - - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_WEB); - echo_size = scsi_3btoul(&targ->dv_buffer[1]); - echo_size &= 0x1FFF; -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Echo buffer size= %d\n", echo_size); - } -#endif - if (echo_size == 0) { - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - - /* Generate the buffer pattern */ - targ->dv_echo_size = echo_size; - ahc_linux_generate_dv_pattern(targ); - /* - * Setup initial negotiation values. - */ - ahc_linux_filter_inquiry(ahc, devinfo); - break; - } - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) - targ->dv_state_retry--; - if (targ->dv_state_retry <= 10) - break; -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("DV REBD reties exhausted\n"); - } -#endif - /* FALLTHROUGH */ - case SS_FATAL: - default: - /* - * Setup initial negotiation values - * and try level 1 DV. - */ - ahc_linux_filter_inquiry(ahc, devinfo); - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_INQ_VERIFY); - targ->dv_echo_size = 0; - break; - } - break; - - case AHC_DV_STATE_WEB: - switch (status & SS_MASK) { - case SS_NOP: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_REB); - break; - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahc_linux_fallback(ahc, devinfo) != 0) { - AHC_SET_DV_STATE(ahc, targ, - AHC_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 AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("DV WEB reties exhausted\n"); - } -#endif - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - break; - - case AHC_DV_STATE_REB: - switch (status & SS_MASK) { - case SS_NOP: - if (memcmp(targ->dv_buffer, targ->dv_buffer1, - targ->dv_echo_size) != 0) { - if (ahc_linux_fallback(ahc, devinfo) != 0) - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_EXIT); - else - AHC_SET_DV_STATE(ahc, targ, - AHC_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; - } - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_cmd_get_transaction_status(cmd) - == CAM_REQUEUE_REQ) { - targ->dv_state_retry--; - } else if ((status & SSQ_FALLBACK) != 0) { - if (ahc_linux_fallback(ahc, devinfo) != 0) { - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_EXIT); - break; - } - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_WEB); - } - if (targ->dv_state_retry <= 10) { - if ((status & (SSQ_DELAY_RANDOM|SSQ_DELAY))!= 0) - msleep(ahc->our_id*1000/10); - break; - } -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("DV REB reties exhausted\n"); - } -#endif - /* FALLTHROUGH */ - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - break; - - case AHC_DV_STATE_SU: - switch (status & SS_MASK) { - case SS_NOP: - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - break; - - case AHC_DV_STATE_BUSY: - switch (status & SS_MASK) { - case SS_NOP: - case SS_INQ_REFRESH: - AHC_SET_DV_STATE(ahc, targ, - AHC_DV_STATE_INQ_SHORT_ASYNC); - break; - case SS_TUR: - case SS_RETRY: - AHC_SET_DV_STATE(ahc, targ, targ->dv_state); - if (ahc_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 AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("DV BUSY reties exhausted\n"); - } -#endif - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - } - break; - default: - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } - break; - - default: - printf("%s: Invalid DV completion state %d\n", ahc_name(ahc), - targ->dv_state); - AHC_SET_DV_STATE(ahc, targ, AHC_DV_STATE_EXIT); - break; - } -} - -static void -ahc_linux_dv_fill_cmd(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo) -{ - memset(cmd, 0, sizeof(struct scsi_cmnd)); - cmd->device = ahc->platform_data->dv_scsi_dev; - cmd->scsi_done = ahc_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 -ahc_linux_dv_inq(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, struct ahc_linux_target *targ, - u_int request_length) -{ - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending INQ\n"); - } -#endif - if (targ->inq_data == NULL) - targ->inq_data = malloc(AHC_LINUX_DV_INQ_LEN, - M_DEVBUF, M_WAITOK); - if (targ->dv_state > AHC_DV_STATE_INQ_ASYNC) { - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = malloc(AHC_LINUX_DV_INQ_LEN, - M_DEVBUF, M_WAITOK); - } - - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_READ; - cmd->cmd_len = 6; - cmd->cmnd[0] = INQUIRY; - cmd->cmnd[4] = request_length; - cmd->request_bufflen = request_length; - if (targ->dv_state > AHC_DV_STATE_INQ_ASYNC) - cmd->request_buffer = targ->dv_buffer; - else - cmd->request_buffer = targ->inq_data; - memset(cmd->request_buffer, 0, AHC_LINUX_DV_INQ_LEN); -} - -static void -ahc_linux_dv_tur(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo) -{ - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending TUR\n"); - } -#endif - /* Do a TUR to clear out any non-fatal transitional state */ - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_NONE; - cmd->cmd_len = 6; - cmd->cmnd[0] = TEST_UNIT_READY; -} - -#define AHC_REBD_LEN 4 - -static void -ahc_linux_dv_rebd(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, struct ahc_linux_target *targ) -{ - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending REBD\n"); - } -#endif - if (targ->dv_buffer != NULL) - free(targ->dv_buffer, M_DEVBUF); - targ->dv_buffer = malloc(AHC_REBD_LEN, M_DEVBUF, M_WAITOK); - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_READ; - cmd->cmd_len = 10; - cmd->cmnd[0] = READ_BUFFER; - cmd->cmnd[1] = 0x0b; - scsi_ulto3b(AHC_REBD_LEN, &cmd->cmnd[6]); - cmd->request_bufflen = AHC_REBD_LEN; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer; -} - -static void -ahc_linux_dv_web(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, struct ahc_linux_target *targ) -{ - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending WEB\n"); - } -#endif - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_WRITE; - cmd->cmd_len = 10; - cmd->cmnd[0] = WRITE_BUFFER; - cmd->cmnd[1] = 0x0a; - scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]); - cmd->request_bufflen = targ->dv_echo_size; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer; -} - -static void -ahc_linux_dv_reb(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, struct ahc_linux_target *targ) -{ - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending REB\n"); - } -#endif - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_READ; - cmd->cmd_len = 10; - cmd->cmnd[0] = READ_BUFFER; - cmd->cmnd[1] = 0x0a; - scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]); - cmd->request_bufflen = targ->dv_echo_size; - cmd->underflow = cmd->request_bufflen; - cmd->request_buffer = targ->dv_buffer1; -} - -static void -ahc_linux_dv_su(struct ahc_softc *ahc, struct scsi_cmnd *cmd, - struct ahc_devinfo *devinfo, - struct ahc_linux_target *targ) -{ - u_int le; - - le = SID_IS_REMOVABLE(targ->inq_data) ? SSS_LOEJ : 0; - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Sending SU\n"); - } -#endif - ahc_linux_dv_fill_cmd(ahc, cmd, devinfo); - cmd->sc_data_direction = SCSI_DATA_NONE; - cmd->cmd_len = 6; - cmd->cmnd[0] = START_STOP_UNIT; - cmd->cmnd[4] = le | SSS_START; -} - -static int -ahc_linux_fallback(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) -{ - struct ahc_linux_target *targ; - struct ahc_initiator_tinfo *tinfo; - struct ahc_transinfo *goal; - struct ahc_tmode_tstate *tstate; - struct ahc_syncrate *syncrate; - u_long s; - u_int width; - u_int period; - u_int offset; - u_int ppr_options; - u_int cur_speed; - u_int wide_speed; - u_int narrow_speed; - u_int fallback_speed; - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - ahc_print_devinfo(ahc, devinfo); - printf("Trying to fallback\n"); - } -#endif - ahc_lock(ahc, &s); - targ = ahc->platform_data->targets[devinfo->target_offset]; - tinfo = ahc_fetch_transinfo(ahc, 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 = AHC_ASYNC_XFER_PERIOD; - if (targ->dv_next_narrow_period == 0) - targ->dv_next_narrow_period = MAX(period, AHC_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, AHC_SYNCRATE_MIN); - wide_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_16_BIT, - targ->dv_next_wide_period, - MAX_OFFSET, - AHC_SYNCRATE_MIN); - narrow_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_8_BIT, - targ->dv_next_narrow_period, - MAX_OFFSET, - AHC_SYNCRATE_MIN); - fallback_speed = aic_calc_speed(width, period+1, offset, - AHC_SYNCRATE_MIN); -#ifdef AHC_DEBUG - if (ahc_debug & AHC_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 >= AHC_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 ((ahc->features & AHC_WIDE) != 0 - && targ->dv_max_width != 0 - && wide_speed >= fallback_speed - && (targ->dv_next_wide_period <= AHC_ASYNC_XFER_PERIOD - || period >= AHC_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 { - ahc_unlock(ahc, &s); - return (-1); - } - offset = MAX_OFFSET; - syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, - AHC_SYNCRATE_DT); - ahc_set_width(ahc, devinfo, width, AHC_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 = AHC_ASYNC_XFER_PERIOD; - else - targ->dv_next_wide_period = AHC_ASYNC_XFER_PERIOD; - } - ahc_set_syncrate(ahc, devinfo, syncrate, period, offset, - ppr_options, AHC_TRANS_GOAL, FALSE); - targ->dv_last_ppr_options = ppr_options; - ahc_unlock(ahc, &s); - return (0); -} - -static void -ahc_linux_dv_timeout(struct scsi_cmnd *cmd) -{ - struct ahc_softc *ahc; - struct scb *scb; - u_long flags; - - ahc = *((struct ahc_softc **)cmd->device->host->hostdata); - ahc_lock(ahc, &flags); - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) { - printf("%s: Timeout while doing DV command %x.\n", - ahc_name(ahc), cmd->cmnd[0]); - ahc_dump_card_state(ahc); - } -#endif - - /* - * Guard against "done race". No action is - * required if we just completed. - */ - if ((scb = (struct scb *)cmd->host_scribble) == NULL) { - ahc_unlock(ahc, &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) - ahc_set_transaction_status(scb, CAM_AUTOSENSE_FAIL); - else - ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); - ahc_reset_channel(ahc, cmd->device->channel + 'A', /*initiate*/TRUE); - - /* - * Add a minimal bus settle delay for devices that are slow to - * respond after bus resets. - */ - ahc_linux_freeze_simq(ahc); - init_timer(&ahc->platform_data->reset_timer); - ahc->platform_data->reset_timer.data = (u_long)ahc; - ahc->platform_data->reset_timer.expires = jiffies + HZ / 2; - ahc->platform_data->reset_timer.function = - (ahc_linux_callback_t *)ahc_linux_release_simq; - add_timer(&ahc->platform_data->reset_timer); - if (ahc_linux_next_device_to_run(ahc) != NULL) - ahc_schedule_runq(ahc); - ahc_linux_run_complete_queue(ahc); - ahc_unlock(ahc, &flags); -} - -static void -ahc_linux_dv_complete(struct scsi_cmnd *cmd) -{ - struct ahc_softc *ahc; - - ahc = *((struct ahc_softc **)cmd->device->host->hostdata); - - /* Delete the DV timer before it goes off! */ - scsi_delete_timer(cmd); - -#ifdef AHC_DEBUG - if (ahc_debug & AHC_SHOW_DV) - printf("%s:%d:%d: Command completed, status= 0x%x\n", - ahc_name(ahc), cmd->device->channel, - cmd->device->id, cmd->result); -#endif - - /* Wake up the state machine */ - up(&ahc->platform_data->dv_cmd_sem); -} - -static void -ahc_linux_generate_dv_pattern(struct ahc_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 -ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) -{ - static int warned_user; - u_int tags; - - tags = 0; - if ((ahc->user_discenable & devinfo->target_mask) != 0) { - if (ahc->unit >= NUM_ELEMENTS(aic7xxx_tag_info)) { - if (warned_user == 0) { - - printf(KERN_WARNING -"aic7xxx: WARNING: Insufficient tag_info instances\n" -"aic7xxx: for installed controllers. Using defaults\n" -"aic7xxx: Please update the aic7xxx_tag_info array in\n" -"aic7xxx: the aic7xxx_osm..c source file.\n"); - warned_user++; - } - tags = AHC_MAX_QUEUE; - } else { - adapter_tag_info_t *tag_info; - - tag_info = &aic7xxx_tag_info[ahc->unit]; - tags = tag_info->tag_commands[devinfo->target_offset]; - if (tags > AHC_MAX_QUEUE) - tags = AHC_MAX_QUEUE; - } - } - return (tags); -} - -static u_int -ahc_linux_user_dv_setting(struct ahc_softc *ahc) -{ - static int warned_user; - int dv; - - if (ahc->unit >= NUM_ELEMENTS(aic7xxx_dv_settings)) { - if (warned_user == 0) { - - printf(KERN_WARNING -"aic7xxx: WARNING: Insufficient dv settings instances\n" -"aic7xxx: for installed controllers. Using defaults\n" -"aic7xxx: Please update the aic7xxx_dv_settings array\n" -"aic7xxx: in the aic7xxx_osm.c source file.\n"); - warned_user++; - } - dv = -1; - } else { - - dv = aic7xxx_dv_settings[ahc->unit]; - } - - if (dv < 0) { - u_long s; - - /* - * Apply the default. - */ - /* - * XXX - Enable DV on non-U160 controllers once it - * has been tested there. - */ - ahc_lock(ahc, &s); - dv = (ahc->features & AHC_DT); - if (ahc->seep_config != 0 - && ahc->seep_config->signature >= CFSIGNATURE2) - dv = (ahc->seep_config->adapter_control & CFENABLEDV); - ahc_unlock(ahc, &s); - } - return (dv); -} - -/* - * Determines the queue depth for a given device. - */ -static void -ahc_linux_device_queue_depth(struct ahc_softc *ahc, - struct ahc_linux_device *dev) -{ - struct ahc_devinfo devinfo; - u_int tags; - - ahc_compile_devinfo(&devinfo, - dev->target->channel == 0 - ? ahc->our_id : ahc->our_id_b, - dev->target->target, dev->lun, - dev->target->channel == 0 ? 'A' : 'B', - ROLE_INITIATOR); - tags = ahc_linux_user_tagdepth(ahc, &devinfo); - if (tags != 0 - && dev->scsi_device != NULL - && dev->scsi_device->tagged_supported != 0) { - - ahc_set_tags(ahc, &devinfo, AHC_QUEUE_TAGGED); - ahc_print_devinfo(ahc, &devinfo); - printf("Tagged Queuing enabled. Depth %d\n", tags); - } else { - ahc_set_tags(ahc, &devinfo, AHC_QUEUE_NONE); - } -} - -static void -ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev) -{ - struct ahc_cmd *acmd; - struct scsi_cmnd *cmd; - struct scb *scb; - struct hardware_scb *hscb; - struct ahc_initiator_tinfo *tinfo; - struct ahc_tmode_tstate *tstate; - uint16_t mask; - - if ((dev->flags & AHC_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 (ahc->platform_data->qfrozen != 0 - && AHC_DV_SIMQ_FROZEN(ahc) == 0) { - TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, - dev, links); - dev->flags |= AHC_DEV_ON_RUN_LIST; - return; - } - /* - * Get an scb to use. - */ - if ((scb = ahc_get_scb(ahc)) == NULL) { - TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, - dev, links); - dev->flags |= AHC_DEV_ON_RUN_LIST; - ahc->flags |= AHC_RESOURCE_SHORTAGE; - return; - } - TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe); - cmd = &acmd_scsi_cmd(acmd); - scb->io_ctx = cmd; - scb->platform_data->dev = dev; - hscb = scb->hscb; - cmd->host_scribble = (char *)scb; - - /* - * Fill out basics of the HSCB. - */ - hscb->control = 0; - hscb->scsiid = BUILD_SCSIID(ahc, cmd); - hscb->lun = cmd->device->lun; - mask = SCB_GET_TARGET_MASK(ahc, scb); - tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb), - SCB_GET_OUR_ID(scb), - SCB_GET_TARGET(ahc, scb), &tstate); - hscb->scsirate = tinfo->scsirate; - hscb->scsioffset = tinfo->curr.offset; - if ((tstate->ultraenb & mask) != 0) - hscb->control |= ULTRAENB; - - if ((ahc->user_discenable & mask) != 0) - hscb->control |= DISCENB; - - if (AHC_DV_CMD(cmd) != 0) - scb->flags |= SCB_SILENT; - - if ((tstate->auto_negotiate & mask) != 0) { - scb->flags |= SCB_AUTO_NEGOTIATE; - scb->hscb->control |= MK_MESSAGE; - } - - if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - int msg_bytes; - uint8_t tag_msgs[2]; - - msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); - if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { - hscb->control |= tag_msgs[0]; - if (tag_msgs[0] == MSG_ORDERED_TASK) - dev->commands_since_idle_or_otag = 0; - } else -#endif - if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH - && (dev->flags & AHC_DEV_Q_TAGGED) != 0) { - hscb->control |= MSG_ORDERED_TASK; - dev->commands_since_idle_or_otag = 0; - } else { - hscb->control |= MSG_SIMPLE_TASK; - } - } - - hscb->cdb_len = cmd->cmd_len; - if (hscb->cdb_len <= 12) { - memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len); - } else { - memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len); - scb->flags |= SCB_CDB32_PTR; - } - - scb->platform_data->xfer_len = 0; - ahc_set_residual(scb, 0); - ahc_set_sense_residual(scb, 0); - scb->sg_count = 0; - if (cmd->use_sg != 0) { - struct ahc_dma_seg *sg; - struct scatterlist *cur_seg; - struct scatterlist *end_seg; - int nseg; - - cur_seg = (struct scatterlist *)cmd->request_buffer; - nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg, - scsi_to_pci_dma_dir(cmd->sc_data_direction)); - end_seg = cur_seg + nseg; - /* Copy the segments into the SG list. */ - sg = scb->sg_list; - /* - * The sg_count may be larger than nseg if - * a transfer crosses a 32bit page. - */ - while (cur_seg < end_seg) { - dma_addr_t addr; - bus_size_t len; - int consumed; - - addr = sg_dma_address(cur_seg); - len = sg_dma_len(cur_seg); - consumed = ahc_linux_map_seg(ahc, scb, - sg, addr, len); - sg += consumed; - scb->sg_count += consumed; - cur_seg++; - } - sg--; - sg->len |= ahc_htole32(AHC_DMA_LAST_SEG); - - /* - * Reset the sg list pointer. - */ - scb->hscb->sgptr = - ahc_htole32(scb->sg_list_phys | SG_FULL_RESID); - - /* - * Copy the first SG into the "current" - * data pointer area. - */ - scb->hscb->dataptr = scb->sg_list->addr; - scb->hscb->datacnt = scb->sg_list->len; - } else if (cmd->request_bufflen != 0) { - struct ahc_dma_seg *sg; - dma_addr_t addr; - - sg = scb->sg_list; - addr = pci_map_single(ahc->dev_softc, - cmd->request_buffer, - cmd->request_bufflen, - scsi_to_pci_dma_dir(cmd->sc_data_direction)); - scb->platform_data->buf_busaddr = addr; - scb->sg_count = ahc_linux_map_seg(ahc, scb, - sg, addr, - cmd->request_bufflen); - sg->len |= ahc_htole32(AHC_DMA_LAST_SEG); - - /* - * Reset the sg list pointer. - */ - scb->hscb->sgptr = - ahc_htole32(scb->sg_list_phys | SG_FULL_RESID); - - /* - * Copy the first SG into the "current" - * data pointer area. - */ - scb->hscb->dataptr = sg->addr; - scb->hscb->datacnt = sg->len; - } else { - scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL); - scb->hscb->dataptr = 0; - scb->hscb->datacnt = 0; - scb->sg_count = 0; - } + scb->hscb->dataptr = scb->sg_list->addr; + scb->hscb->datacnt = scb->sg_list->len; + } else if (cmd->request_bufflen != 0) { + struct ahc_dma_seg *sg; + dma_addr_t addr; + + sg = scb->sg_list; + addr = pci_map_single(ahc->dev_softc, + cmd->request_buffer, + cmd->request_bufflen, + cmd->sc_data_direction); + scb->platform_data->buf_busaddr = addr; + scb->sg_count = ahc_linux_map_seg(ahc, scb, + sg, addr, + cmd->request_bufflen); + sg->len |= ahc_htole32(AHC_DMA_LAST_SEG); - ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE); - LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); - dev->openings--; - dev->active++; - dev->commands_issued++; - if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0) - dev->commands_since_idle_or_otag++; + /* + * Reset the sg list pointer. + */ + scb->hscb->sgptr = + ahc_htole32(scb->sg_list_phys | SG_FULL_RESID); /* - * We only allow one untagged transaction - * per target in the initiator role unless - * we are storing a full busy target *lun* - * table in SCB space. + * Copy the first SG into the "current" + * data pointer area. */ - if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 - && (ahc->features & AHC_SCB_BTT) == 0) { - struct scb_tailq *untagged_q; - int target_offset; - - target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); - untagged_q = &(ahc->untagged_queues[target_offset]); - TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); - scb->flags |= SCB_UNTAGGEDQ; - if (TAILQ_FIRST(untagged_q) != scb) - continue; - } - scb->flags |= SCB_ACTIVE; - ahc_queue_scb(ahc, scb); + scb->hscb->dataptr = sg->addr; + scb->hscb->datacnt = sg->len; + } else { + scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL); + scb->hscb->dataptr = 0; + scb->hscb->datacnt = 0; + scb->sg_count = 0; + } + + LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); + dev->openings--; + dev->active++; + dev->commands_issued++; + if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0) + dev->commands_since_idle_or_otag++; + + scb->flags |= SCB_ACTIVE; + if (untagged_q) { + TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); + scb->flags |= SCB_UNTAGGEDQ; } + ahc_queue_scb(ahc, scb); + return 0; } /* * SCSI controller interrupt handler. */ irqreturn_t -ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs) +ahc_linux_isr(int irq, void *dev_id) { struct ahc_softc *ahc; u_long flags; @@ -3773,9 +1579,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs) ahc = (struct ahc_softc *) dev_id; ahc_lock(ahc, &flags); ours = ahc_intr(ahc); - if (ahc_linux_next_device_to_run(ahc) != NULL) - ahc_schedule_runq(ahc); - ahc_linux_run_complete_queue(ahc); ahc_unlock(ahc, &flags); return IRQ_RETVAL(ours); } @@ -3784,141 +1587,25 @@ void ahc_platform_flushwork(struct ahc_softc *ahc) { - while (ahc_linux_run_complete_queue(ahc) != NULL) - ; -} - -static struct ahc_linux_target* -ahc_linux_alloc_target(struct ahc_softc *ahc, u_int channel, u_int target) -{ - struct ahc_linux_target *targ; - u_int target_offset; - - target_offset = target; - if (channel != 0) - target_offset += 8; - - targ = malloc(sizeof(*targ), M_DEVBUG, M_NOWAIT); - if (targ == NULL) - return (NULL); - memset(targ, 0, sizeof(*targ)); - targ->channel = channel; - targ->target = target; - targ->ahc = ahc; - targ->flags = AHC_DV_REQUIRED; - ahc->platform_data->targets[target_offset] = targ; - return (targ); -} - -static void -ahc_linux_free_target(struct ahc_softc *ahc, struct ahc_linux_target *targ) -{ - struct ahc_devinfo devinfo; - struct ahc_initiator_tinfo *tinfo; - struct ahc_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 = ahc->our_id; - target_offset = targ->target; - if (targ->channel != 0) { - target_offset += 8; - our_id = ahc->our_id_b; - } - tinfo = ahc_fetch_transinfo(ahc, channel, our_id, - targ->target, &tstate); - ahc_compile_devinfo(&devinfo, our_id, targ->target, CAM_LUN_WILDCARD, - channel, ROLE_INITIATOR); - ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0, - AHC_TRANS_GOAL, /*paused*/FALSE); - ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, - AHC_TRANS_GOAL, /*paused*/FALSE); - ahc_update_neg_request(ahc, &devinfo, tstate, tinfo, AHC_NEG_ALWAYS); - ahc->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 ahc_linux_device* -ahc_linux_alloc_device(struct ahc_softc *ahc, - struct ahc_linux_target *targ, u_int lun) -{ - struct ahc_linux_device *dev; - - 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 = AHC_DEV_UNCONFIGURED; - dev->lun = lun; - dev->target = targ; - - /* - * We start out life using untagged - * transactions of which we allow one. - */ - 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->refcount++; - targ->devices[lun] = dev; - return (dev); -} - -static void -__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev) -{ - struct ahc_linux_target *targ; - - targ = dev->target; - targ->devices[dev->lun] = NULL; - free(dev, M_DEVBUF); - targ->refcount--; - if (targ->refcount == 0 - && (targ->flags & AHC_DV_REQUIRED) == 0) - ahc_linux_free_target(ahc, targ); -} - -static void -ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev) -{ - del_timer_sync(&dev->timer); - __ahc_linux_free_device(ahc, dev); } void ahc_send_async(struct ahc_softc *ahc, char channel, - u_int target, u_int lun, ac_code code, void *arg) + u_int target, u_int lun, ac_code code) { switch (code) { case AC_TRANSFER_NEG: { char buf[80]; + struct scsi_target *starget; struct ahc_linux_target *targ; struct info_str info; struct ahc_initiator_tinfo *tinfo; struct ahc_tmode_tstate *tstate; int target_offset; + unsigned int target_ppr_options; + + BUG_ON(target == CAM_TARGET_WILDCARD); info.buffer = buf; info.length = sizeof(buf); @@ -3947,58 +1634,37 @@ ahc_send_async(struct ahc_softc *ahc, char channel, target_offset = target; if (channel == 'B') target_offset += 8; - targ = ahc->platform_data->targets[target_offset]; - if (targ == NULL) + starget = ahc->platform_data->starget[target_offset]; + 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) + targ = scsi_transport_target_data(starget); + + 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); + + 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:", ahc_name(ahc), channel); - if (target == CAM_TARGET_WILDCARD) - printf("*): "); - else - printf("%d): ", target); - ahc_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_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(ahc->platform_data->host, channel - 'A', target); -#else - Scsi_Device *scsi_dev; - - /* - * Find the SCSI device associated with this - * request and indicate that a UA is expected. - */ - for (scsi_dev = ahc->platform_data->host->host_queue; - scsi_dev != NULL; scsi_dev = scsi_dev->next) { - if (channel - 'A' == scsi_dev->channel - && target == scsi_dev->id - && (lun == CAM_LUN_WILDCARD - || lun == scsi_dev->lun)) { - scsi_dev->was_reset = 1; - scsi_dev->expecting_cc_ua = 1; - } - } -#endif break; } case AC_BUS_RESET: @@ -4018,7 +1684,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel, void ahc_done(struct ahc_softc *ahc, struct scb *scb) { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; struct ahc_linux_device *dev; LIST_REMOVE(scb, pending_links); @@ -4029,7 +1695,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb) target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); untagged_q = &(ahc->untagged_queues[target_offset]); TAILQ_REMOVE(untagged_q, scb, links.tqe); - ahc_run_untagged_queue(ahc, untagged_q); + BUG_ON(!TAILQ_EMPTY(untagged_q)); } if ((scb->flags & SCB_ACTIVE) == 0) { @@ -4096,19 +1762,8 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb) ahc_set_transaction_status(scb, CAM_REQ_CMP); } } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { - ahc_linux_handle_scsi_status(ahc, dev, scb); - } else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) { - dev->flags |= AHC_DEV_UNCONFIGURED; - if (AHC_DV_CMD(cmd) == FALSE) - dev->target->flags &= ~AHC_DV_REQUIRED; + ahc_linux_handle_scsi_status(ahc, cmd->device, scb); } - /* - * Start DV for devices that require it assuming the first command - * sent does not result in a selection timeout. - */ - if (ahc_get_transaction_status(scb) != CAM_SEL_TIMEOUT - && (dev->target->flags & AHC_DV_REQUIRED) != 0) - ahc_linux_start_dv(ahc); if (dev->openings == 1 && ahc_get_transaction_status(scb) == CAM_REQ_CMP @@ -4129,48 +1784,31 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb) if (dev->active == 0) dev->commands_since_idle_or_otag = 0; - if (TAILQ_EMPTY(&dev->busyq)) { - if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0 - && dev->active == 0 - && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0) - ahc_linux_free_device(ahc, dev); - } else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) { - TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links); - dev->flags |= AHC_DEV_ON_RUN_LIST; - } - if ((scb->flags & SCB_RECOVERY_SCB) != 0) { printf("Recovery SCB completes\n"); if (ahc_get_transaction_status(scb) == CAM_BDR_SENT || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED) ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT); - if ((ahc->platform_data->flags & AHC_UP_EH_SEMAPHORE) != 0) { - ahc->platform_data->flags &= ~AHC_UP_EH_SEMAPHORE; - up(&ahc->platform_data->eh_sem); - } + + if (ahc->platform_data->eh_done) + complete(ahc->platform_data->eh_done); } ahc_free_scb(ahc, scb); ahc_linux_queue_cmd_complete(ahc, cmd); - - if ((ahc->platform_data->flags & AHC_DV_WAIT_SIMQ_EMPTY) != 0 - && LIST_FIRST(&ahc->pending_scbs) == NULL) { - ahc->platform_data->flags &= ~AHC_DV_WAIT_SIMQ_EMPTY; - up(&ahc->platform_data->dv_sem); - } - } static void ahc_linux_handle_scsi_status(struct ahc_softc *ahc, - struct ahc_linux_device *dev, struct scb *scb) + struct scsi_device *sdev, struct scb *scb) { struct ahc_devinfo devinfo; + struct ahc_linux_device *dev = scsi_transport_device_data(sdev); ahc_compile_devinfo(&devinfo, ahc->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); /* @@ -4189,7 +1827,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc, case SCSI_STATUS_CHECK_COND: case SCSI_STATUS_CMD_TERMINATED: { - Scsi_Cmnd *cmd; + struct scsi_cmnd *cmd; /* * Copy sense information to the OS's cmd @@ -4199,9 +1837,9 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc, if (scb->flags & SCB_SENSE) { u_int sense_size; - sense_size = MIN(sizeof(struct scsi_sense_data) + sense_size = min(sizeof(struct scsi_sense_data) - ahc_get_sense_residual(scb), - sizeof(cmd->sense_buffer)); + (u_long)sizeof(cmd->sense_buffer)); memcpy(cmd->sense_buffer, ahc_get_sense_buf(ahc, scb), sense_size); if (sense_size < sizeof(cmd->sense_buffer)) @@ -4270,7 +1908,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc, } ahc_set_transaction_status(scb, CAM_REQUEUE_REQ); ahc_set_scsi_status(scb, SCSI_STATUS_OK); - ahc_platform_set_tags(ahc, &devinfo, + ahc_platform_set_tags(ahc, sdev, &devinfo, (dev->flags & AHC_DEV_Q_BASIC) ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED); break; @@ -4281,61 +1919,24 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc, */ dev->openings = 1; ahc_set_scsi_status(scb, SCSI_STATUS_BUSY); - ahc_platform_set_tags(ahc, &devinfo, + ahc_platform_set_tags(ahc, sdev, &devinfo, (dev->flags & AHC_DEV_Q_BASIC) ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED); - /* FALLTHROUGH */ - } - case SCSI_STATUS_BUSY: - { - /* - * Set a short timer to defer sending commands for - * a bit since Linux will not delay in this case. - */ - if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) { - printf("%s:%c:%d: Device Timer still active during " - "busy processing\n", ahc_name(ahc), - dev->target->channel, dev->target->target); - break; - } - dev->flags |= AHC_DEV_TIMER_ACTIVE; - dev->qfrozen++; - init_timer(&dev->timer); - dev->timer.data = (u_long)dev; - dev->timer.expires = jiffies + (HZ/2); - dev->timer.function = ahc_linux_dev_timed_unfreeze; - add_timer(&dev->timer); break; } } } static void -ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd) +ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd) { - /* - * Typically, the complete queue has very few entries - * queued to it before the queue is emptied by - * ahc_linux_run_complete_queue, so sorting the entries - * by generation number should be inexpensive. - * We perform the sort so that commands that complete - * with an error are retuned in the order origionally - * queued to the controller so that any subsequent retries - * are performed in order. The underlying ahc routines do - * not guarantee the order that aborted commands will be - * returned to us. - */ - struct ahc_completeq *completeq; - struct ahc_cmd *list_cmd; - struct ahc_cmd *acmd; - /* * Map CAM error codes into Linux Error codes. We * avoid the conversion so that the DV code has the * full error information available when making * state change decisions. */ - if (AHC_DV_CMD(cmd) == FALSE) { + { u_int new_status; switch (ahc_cmd_get_transaction_status(cmd)) { @@ -4382,26 +1983,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd) new_status = DID_ERROR; break; case CAM_REQUEUE_REQ: - /* - * If we want the request requeued, make sure there - * are sufficent retries. In the old scsi error code, - * we used to be able to specify a result code that - * bypassed the retry count. Now we must use this - * hack. We also "fake" a check condition with - * a sense code of ABORTED COMMAND. This seems to - * evoke a retry even if this command is being sent - * via the eh thread. Ick! Ick! Ick! - */ - if (cmd->retries > 0) - cmd->retries--; - new_status = DID_OK; - ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND); - cmd->result |= (DRIVER_SENSE << 24); - memset(cmd->sense_buffer, 0, - sizeof(cmd->sense_buffer)); - cmd->sense_buffer[0] = SSD_ERRCODE_VALID - | SSD_CURRENT_ERROR; - cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND; + new_status = DID_REQUEUE; break; default: /* We should never get here */ @@ -4412,147 +1994,15 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd) ahc_cmd_set_transaction_status(cmd, new_status); } - completeq = &ahc->platform_data->completeq; - list_cmd = TAILQ_FIRST(completeq); - acmd = (struct ahc_cmd *)cmd; - while (list_cmd != NULL - && acmd_scsi_cmd(list_cmd).serial_number - < acmd_scsi_cmd(acmd).serial_number) - list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe); - if (list_cmd != NULL) - TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe); - else - TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe); -} - -static void -ahc_linux_filter_inquiry(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) -{ - struct scsi_inquiry_data *sid; - struct ahc_initiator_tinfo *tinfo; - struct ahc_transinfo *user; - struct ahc_transinfo *goal; - struct ahc_transinfo *curr; - struct ahc_tmode_tstate *tstate; - struct ahc_syncrate *syncrate; - struct ahc_linux_device *dev; - u_int maxsync; - u_int width; - u_int period; - u_int offset; - u_int ppr_options; - u_int trans_version; - u_int prot_version; - - /* - * Determine if this lun actually exists. If so, - * hold on to its corresponding device structure. - * If not, make sure we release the device and - * don't bother processing the rest of this inquiry - * command. - */ - dev = ahc_linux_get_device(ahc, devinfo->channel - 'A', - devinfo->target, devinfo->lun, - /*alloc*/TRUE); - - sid = (struct scsi_inquiry_data *)dev->target->inq_data; - if (SID_QUAL(sid) == SID_QUAL_LU_CONNECTED) { - - dev->flags &= ~AHC_DEV_UNCONFIGURED; - } else { - dev->flags |= AHC_DEV_UNCONFIGURED; - return; - } - - /* - * Update our notion of this device's transfer - * negotiation capabilities. - */ - tinfo = ahc_fetch_transinfo(ahc, devinfo->channel, - devinfo->our_scsiid, - devinfo->target, &tstate); - user = &tinfo->user; - goal = &tinfo->goal; - curr = &tinfo->curr; - width = user->width; - period = user->period; - offset = user->offset; - ppr_options = user->ppr_options; - trans_version = user->transport_version; - prot_version = MIN(user->protocol_version, SID_ANSI_REV(sid)); - - /* - * Only attempt SPI3/4 once we've verified that - * the device claims to support SPI3/4 features. - */ - if (prot_version < SCSI_REV_2) - trans_version = SID_ANSI_REV(sid); - else - trans_version = SCSI_REV_2; - - if ((sid->flags & SID_WBus16) == 0) - width = MSG_EXT_WDTR_BUS_8_BIT; - if ((sid->flags & SID_Sync) == 0) { - period = 0; - offset = 0; - ppr_options = 0; - } - if ((sid->spi3data & SID_SPI_QAS) == 0) - ppr_options &= ~MSG_EXT_PPR_QAS_REQ; - if ((sid->spi3data & SID_SPI_CLOCK_DT) == 0) - ppr_options &= MSG_EXT_PPR_QAS_REQ; - if ((sid->spi3data & SID_SPI_IUS) == 0) - ppr_options &= (MSG_EXT_PPR_DT_REQ - | MSG_EXT_PPR_QAS_REQ); - - if (prot_version > SCSI_REV_2 - && ppr_options != 0) - trans_version = user->transport_version; - - ahc_validate_width(ahc, /*tinfo limit*/NULL, &width, ROLE_UNKNOWN); - if ((ahc->features & AHC_ULTRA2) != 0) - maxsync = AHC_SYNCRATE_DT; - else if ((ahc->features & AHC_ULTRA) != 0) - maxsync = AHC_SYNCRATE_ULTRA; - else - maxsync = AHC_SYNCRATE_FAST; - - syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, maxsync); - ahc_validate_offset(ahc, /*tinfo limit*/NULL, syncrate, - &offset, width, ROLE_UNKNOWN); - if (offset == 0 || period == 0) { - period = 0; - offset = 0; - ppr_options = 0; - } - /* Apply our filtered user settings. */ - curr->transport_version = trans_version; - curr->protocol_version = prot_version; - ahc_set_width(ahc, devinfo, width, AHC_TRANS_GOAL, /*paused*/FALSE); - ahc_set_syncrate(ahc, devinfo, syncrate, period, - offset, ppr_options, AHC_TRANS_GOAL, - /*paused*/FALSE); + cmd->scsi_done(cmd); } static void -ahc_linux_sem_timeout(u_long arg) +ahc_linux_freeze_simq(struct ahc_softc *ahc) { - struct ahc_softc *ahc; - u_long s; - - ahc = (struct ahc_softc *)arg; + unsigned long s; ahc_lock(ahc, &s); - if ((ahc->platform_data->flags & AHC_UP_EH_SEMAPHORE) != 0) { - ahc->platform_data->flags &= ~AHC_UP_EH_SEMAPHORE; - up(&ahc->platform_data->eh_sem); - } - ahc_unlock(ahc, &s); -} - -static void -ahc_linux_freeze_simq(struct ahc_softc *ahc) -{ ahc->platform_data->qfrozen++; if (ahc->platform_data->qfrozen == 1) { scsi_block_requests(ahc->platform_data->host); @@ -4562,29 +2012,21 @@ ahc_linux_freeze_simq(struct ahc_softc *ahc) CAM_LUN_WILDCARD, SCB_LIST_NULL, ROLE_INITIATOR, CAM_REQUEUE_REQ); } + ahc_unlock(ahc, &s); } static void -ahc_linux_release_simq(u_long arg) +ahc_linux_release_simq(struct ahc_softc *ahc) { - struct ahc_softc *ahc; u_long s; int unblock_reqs; - ahc = (struct ahc_softc *)arg; - unblock_reqs = 0; ahc_lock(ahc, &s); if (ahc->platform_data->qfrozen > 0) ahc->platform_data->qfrozen--; if (ahc->platform_data->qfrozen == 0) unblock_reqs = 1; - if (AHC_DV_SIMQ_FROZEN(ahc) - && ((ahc->platform_data->flags & AHC_DV_WAIT_SIMQ_RELEASE) != 0)) { - ahc->platform_data->flags &= ~AHC_DV_WAIT_SIMQ_RELEASE; - up(&ahc->platform_data->dv_sem); - } - ahc_schedule_runq(ahc); ahc_unlock(ahc, &s); /* * There is still a race here. The mid-layer @@ -4596,37 +2038,12 @@ ahc_linux_release_simq(u_long arg) scsi_unblock_requests(ahc->platform_data->host); } -static void -ahc_linux_dev_timed_unfreeze(u_long arg) -{ - struct ahc_linux_device *dev; - struct ahc_softc *ahc; - u_long s; - - dev = (struct ahc_linux_device *)arg; - ahc = dev->target->ahc; - ahc_lock(ahc, &s); - dev->flags &= ~AHC_DEV_TIMER_ACTIVE; - if (dev->qfrozen > 0) - dev->qfrozen--; - if (dev->qfrozen == 0 - && (dev->flags & AHC_DEV_ON_RUN_LIST) == 0) - ahc_linux_run_device_queue(ahc, dev); - if (TAILQ_EMPTY(&dev->busyq) - && dev->active == 0) - __ahc_linux_free_device(ahc, dev); - ahc_unlock(ahc, &s); -} - static int -ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) +ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag) { struct ahc_softc *ahc; - struct ahc_cmd *acmd; - struct ahc_cmd *list_acmd; struct ahc_linux_device *dev; struct scb *pending_scb; - u_long s; u_int saved_scbptr; u_int active_scb_index; u_int last_phase; @@ -4637,16 +2054,14 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) int paused; int wait; int disconnected; + unsigned long flags; pending_scb = NULL; paused = FALSE; wait = FALSE; ahc = *(struct ahc_softc **)cmd->device->host->hostdata; - acmd = (struct ahc_cmd *)cmd; - printf("%s:%d:%d:%d: Attempting to queue a%s message\n", - ahc_name(ahc), cmd->device->channel, - cmd->device->id, cmd->device->lun, + scmd_printk(KERN_INFO, cmd, "Attempting to queue a%s message\n", flag == SCB_ABORT ? "n ABORT" : " TARGET RESET"); printf("CDB:"); @@ -4654,21 +2069,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) printf(" 0x%x", cmd->cmnd[cdb_byte]); printf("\n"); - /* - * In all versions of Linux, we have to work around - * a major flaw in how the mid-layer is locked down - * if we are to sleep successfully in our error handler - * while allowing our interrupt handler to run. Since - * the midlayer acquires either the io_request_lock or - * our lock prior to calling us, we must use the - * spin_unlock_irq() method for unlocking our lock. - * This will force interrupts to be enabled on the - * current CPU. Since the EH thread should not have - * been running with CPU interrupts disabled other than - * by acquiring either the io_request_lock or our own - * lock, this *should* be safe. - */ - ahc_midlayer_entrypoint_lock(ahc, &s); + ahc_lock(ahc, &flags); /* * First determine if we currently own this command. @@ -4677,8 +2078,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) * at all, and the system wanted us to just abort the * command, return success. */ - dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, - cmd->device->lun, /*alloc*/FALSE); + dev = scsi_transport_device_data(cmd->device); if (dev == NULL) { /* @@ -4692,24 +2092,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) goto no_cmd; } - TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) { - if (list_acmd == acmd) - break; - } - - if (list_acmd != NULL) { - printf("%s:%d:%d:%d: Command found on device queue\n", - ahc_name(ahc), cmd->device->channel, cmd->device->id, - cmd->device->lun); - if (flag == SCB_ABORT) { - TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe); - cmd->result = DID_ABORT << 16; - ahc_linux_queue_cmd_complete(ahc, cmd); - retval = SUCCESS; - goto done; - } - } - if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id, cmd->device->channel + 'A', @@ -4734,18 +2116,16 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) /* Any SCB for this device will do for a target reset */ LIST_FOREACH(pending_scb, &ahc->pending_scbs, pending_links) { - if (ahc_match_scb(ahc, pending_scb, cmd->device->id, - cmd->device->channel + 'A', + if (ahc_match_scb(ahc, pending_scb, scmd_id(cmd), + scmd_channel(cmd) + 'A', CAM_LUN_WILDCARD, - SCB_LIST_NULL, ROLE_INITIATOR) == 0) + SCB_LIST_NULL, ROLE_INITIATOR)) break; } } if (pending_scb == NULL) { - printf("%s:%d:%d:%d: Command not found\n", - ahc_name(ahc), cmd->device->channel, cmd->device->id, - cmd->device->lun); + scmd_printk(KERN_INFO, cmd, "Command not found\n"); goto no_cmd; } @@ -4767,9 +2147,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) paused = TRUE; if ((pending_scb->flags & SCB_ACTIVE) == 0) { - printf("%s:%d:%d:%d: Command already completed\n", - ahc_name(ahc), cmd->device->channel, cmd->device->id, - cmd->device->lun); + scmd_printk(KERN_INFO, cmd, "Command already completed\n"); goto no_cmd; } @@ -4826,7 +2204,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) if (last_phase != P_BUSFREE && (pending_scb->hscb->tag == active_scb_index || (flag == SCB_DEVICE_RESET - && SCSIID_TARGET(ahc, saved_scsiid) == cmd->device->id))) { + && SCSIID_TARGET(ahc, saved_scsiid) == scmd_id(cmd)))) { /* * We're active on the bus, so assert ATN @@ -4836,9 +2214,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) pending_scb->flags |= SCB_RECOVERY_SCB|flag; ahc_outb(ahc, MSG_OUT, HOST_MSG); ahc_outb(ahc, SCSISIGO, last_phase|ATNO); - printf("%s:%d:%d:%d: Device is active, asserting ATN\n", - ahc_name(ahc), cmd->device->channel, cmd->device->id, - cmd->device->lun); + scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); wait = TRUE; } else if (disconnected) { @@ -4904,9 +2280,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) printf("Device is disconnected, re-queuing SCB\n"); wait = TRUE; } else { - printf("%s:%d:%d:%d: Unable to deliver message\n", - ahc_name(ahc), cmd->device->channel, cmd->device->id, - cmd->device->lun); + scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); retval = FAILED; goto done; } @@ -4923,120 +2297,284 @@ done: if (paused) ahc_unpause(ahc); if (wait) { - struct timer_list timer; - int ret; - - ahc->platform_data->flags |= AHC_UP_EH_SEMAPHORE; - spin_unlock_irq(&ahc->platform_data->spin_lock); - init_timer(&timer); - timer.data = (u_long)ahc; - timer.expires = jiffies + (5 * HZ); - timer.function = ahc_linux_sem_timeout; - add_timer(&timer); + DECLARE_COMPLETION_ONSTACK(done); + + ahc->platform_data->eh_done = &done; + ahc_unlock(ahc, &flags); + printf("Recovery code sleeping\n"); - down(&ahc->platform_data->eh_sem); - printf("Recovery code awake\n"); - ret = del_timer_sync(&timer); - if (ret == 0) { + if (!wait_for_completion_timeout(&done, 5 * HZ)) { + ahc_lock(ahc, &flags); + ahc->platform_data->eh_done = NULL; + ahc_unlock(ahc, &flags); + printf("Timer Expired\n"); retval = FAILED; } - spin_lock_irq(&ahc->platform_data->spin_lock); - } - ahc_schedule_runq(ahc); - ahc_linux_run_complete_queue(ahc); - ahc_midlayer_entrypoint_unlock(ahc, &s); + printf("Recovery code awake\n"); + } else + ahc_unlock(ahc, &flags); return (retval); } void ahc_platform_dump_card_state(struct ahc_softc *ahc) { - struct ahc_linux_device *dev; - int channel; - int maxchannel; - int target; - int maxtarget; - int lun; - int i; +} + +static void ahc_linux_set_width(struct scsi_target *starget, int width) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_devinfo devinfo; + unsigned long flags; + + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + ahc_lock(ahc, &flags); + ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &flags); +} - maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0; - maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7; - for (channel = 0; channel <= maxchannel; channel++) { +static void ahc_linux_set_period(struct scsi_target *starget, int period) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_tmode_tstate *tstate; + struct ahc_initiator_tinfo *tinfo + = ahc_fetch_transinfo(ahc, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahc_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options; + unsigned long flags; + unsigned long offset = tinfo->goal.offset; + struct ahc_syncrate *syncrate; - for (target = 0; target <=maxtarget; target++) { + if (offset == 0) + offset = MAX_OFFSET; - for (lun = 0; lun < AHC_NUM_LUNS; lun++) { - struct ahc_cmd *acmd; + if (period < 9) + period = 9; /* 12.5ns is our minimum */ + if (period == 9) + ppr_options |= MSG_EXT_PPR_DT_REQ; - dev = ahc_linux_get_device(ahc, channel, target, - lun, /*alloc*/FALSE); - if (dev == NULL) - continue; + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); - printf("DevQ(%d:%d:%d): ", - channel, target, lun); - i = 0; - TAILQ_FOREACH(acmd, &dev->busyq, - acmd_links.tqe) { - if (i++ > AHC_SCB_MAX) - break; - } - printf("%d waiting\n", i); - } - } + /* 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; } -} -static void ahc_linux_exit(void); + syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); + ahc_lock(ahc, &flags); + ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, + ppr_options, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &flags); +} -static int __init -ahc_linux_init(void) +static void ahc_linux_set_offset(struct scsi_target *starget, int offset) { -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) - int rc = ahc_linux_detect(&aic7xxx_driver_template); - if (rc) - return rc; - ahc_linux_exit(); - return -ENODEV; -#else - scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template); - if (aic7xxx_driver_template.present == 0) { - scsi_unregister_module(MODULE_SCSI_HA, - &aic7xxx_driver_template); - return (-ENODEV); + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_tmode_tstate *tstate; + struct ahc_initiator_tinfo *tinfo + = ahc_fetch_transinfo(ahc, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahc_devinfo devinfo; + unsigned int ppr_options = 0; + unsigned int period = 0; + unsigned long flags; + struct ahc_syncrate *syncrate = NULL; + + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + if (offset != 0) { + syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); + period = tinfo->goal.period; + ppr_options = tinfo->goal.ppr_options; } + ahc_lock(ahc, &flags); + ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, + ppr_options, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &flags); +} - return (0); -#endif +static void ahc_linux_set_dt(struct scsi_target *starget, int dt) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_tmode_tstate *tstate; + struct ahc_initiator_tinfo *tinfo + = ahc_fetch_transinfo(ahc, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahc_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; + struct ahc_syncrate *syncrate; + + if (dt) { + ppr_options |= MSG_EXT_PPR_DT_REQ; + if (!width) + ahc_linux_set_width(starget, 1); + } else if (period == 9) + period = 10; /* if resetting DT, period must be >= 25ns */ + + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT); + ahc_lock(ahc, &flags); + ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset, + ppr_options, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &flags); } -static void -ahc_linux_exit(void) +#if 0 +/* FIXME: This code claims to support IU and QAS. However, the actual + * sequencer code and aic7xxx_core have no support for these parameters and + * will get into a bad state if they're negotiated. Do not enable this + * unless you know what you're doing */ +static void ahc_linux_set_qas(struct scsi_target *starget, int qas) { - struct ahc_softc *ahc; + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_tmode_tstate *tstate; + struct ahc_initiator_tinfo *tinfo + = ahc_fetch_transinfo(ahc, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahc_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_QAS_REQ; + unsigned int period = tinfo->goal.period; + unsigned long flags; + struct ahc_syncrate *syncrate; + + if (qas) + ppr_options |= MSG_EXT_PPR_QAS_REQ; + + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); + ahc_lock(ahc, &flags); + ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset, + ppr_options, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &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(ahc, &ahc_tailq, links) { +static void ahc_linux_set_iu(struct scsi_target *starget, int iu) +{ + struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); + struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata); + struct ahc_tmode_tstate *tstate; + struct ahc_initiator_tinfo *tinfo + = ahc_fetch_transinfo(ahc, + starget->channel + 'A', + shost->this_id, starget->id, &tstate); + struct ahc_devinfo devinfo; + unsigned int ppr_options = tinfo->goal.ppr_options + & ~MSG_EXT_PPR_IU_REQ; + unsigned int period = tinfo->goal.period; + unsigned long flags; + struct ahc_syncrate *syncrate; + + if (iu) + ppr_options |= MSG_EXT_PPR_IU_REQ; + + ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, + starget->channel + 'A', ROLE_INITIATOR); + syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); + ahc_lock(ahc, &flags); + ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->goal.offset, + ppr_options, AHC_TRANS_GOAL, FALSE); + ahc_unlock(ahc, &flags); +} +#endif + +static void ahc_linux_get_signalling(struct Scsi_Host *shost) +{ + struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata; + unsigned long flags; + u8 mode; - ahc_linux_kill_dv_thread(ahc); + if (!(ahc->features & AHC_ULTRA2)) { + /* non-LVD chipset, may not have SBLKCTL reg */ + spi_signalling(shost) = + ahc->features & AHC_HVD ? + SPI_SIGNAL_HVD : + SPI_SIGNAL_SE; + return; } -#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) + ahc_lock(ahc, &flags); + ahc_pause(ahc); + mode = ahc_inb(ahc, SBLKCTL); + ahc_unpause(ahc); + ahc_unlock(ahc, &flags); + + if (mode & ENAB40) + spi_signalling(shost) = SPI_SIGNAL_LVD; + else if (mode & ENAB20) + spi_signalling(shost) = SPI_SIGNAL_SE; + else + spi_signalling(shost) = SPI_SIGNAL_UNKNOWN; +} + +static struct spi_function_template ahc_linux_transport_functions = { + .set_offset = ahc_linux_set_offset, + .show_offset = 1, + .set_period = ahc_linux_set_period, + .show_period = 1, + .set_width = ahc_linux_set_width, + .show_width = 1, + .set_dt = ahc_linux_set_dt, + .show_dt = 1, +#if 0 + .set_iu = ahc_linux_set_iu, + .show_iu = 1, + .set_qas = ahc_linux_set_qas, + .show_qas = 1, +#endif + .get_signalling = ahc_linux_get_signalling, +}; + + + +static int __init +ahc_linux_init(void) +{ /* - * 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, &aic7xxx_driver_template); -#endif + if (aic7xxx) + aic7xxx_setup(aic7xxx); + + ahc_linux_transport_template = + spi_attach_transport(&ahc_linux_transport_functions); + if (!ahc_linux_transport_template) + return -ENODEV; + + scsi_transport_reserve_device(ahc_linux_transport_template, + sizeof(struct ahc_linux_device)); + + ahc_linux_pci_init(); + ahc_linux_eisa_init(); + return 0; +} + +static void +ahc_linux_exit(void) +{ ahc_linux_pci_exit(); ahc_linux_eisa_exit(); + spi_release_transport(ahc_linux_transport_template); } module_init(ahc_linux_init);