#include "aic7xxx_inline.h"
#include <scsi/scsicam.h>
-/*
- * Include aiclib.c as part of our
- * "module dependencies are hard" work around.
- */
-#include "aiclib.c"
+static struct scsi_transport_template *ahc_linux_transport_template = NULL;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
#include <linux/init.h> /* __setup */
-#endif
-
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-#include "sd.h" /* For geometry detection */
-#endif
-
#include <linux/mm.h> /* For fetching system memory size */
#include <linux/blkdev.h> /* For block_size() */
+#include <linux/delay.h> /* For ssleep/msleep */
-/*
- * Lock protecting manipulation of the 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
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
-struct proc_dir_entry proc_scsi_aic7xxx = {
- PROC_SCSI_AIC7XXX, 7, "aic7xxx",
- S_IFDIR | S_IRUGO | S_IXUGO, 2,
- 0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-#endif
/*
* Set this to the delay in seconds after SCSI bus reset.
{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.
*/
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
*/
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
*/
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:
* 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.
*/
-#ifdef MODULE
static char *aic7xxx = NULL;
-/*
- * Just in case someone uses commas to separate items on the insmod
- * command line, we define a dummy buffer here to avoid having insmod
- * write wild stuff into our code segment
- */
-static char dummy_buffer[60] = "Please don't trounce on me insmod!!\n";
MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
MODULE_DESCRIPTION("Adaptec Aic77XX/78XX SCSI Host Bus Adapter driver");
-#ifdef MODULE_LICENSE
MODULE_LICENSE("Dual BSD/GPL");
-#endif
-MODULE_PARM(aic7xxx, "s");
+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"
" 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:<tag_str> Set per-target tag depth\n"
" global_tag_depth:<int> Global tag depth for every target\n"
" on every bus\n"
-" dv:<dv_settings> Set per-controller Domain Validation Setting.\n"
" seltime:<int> Selection Timeout\n"
" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
"\n"
"\n"
" options aic7xxx 'aic7xxx=probe_eisa_vl.tag_info:{{}.{.10}}.seltime:1'\n"
);
-#endif
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,
- bus_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)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_schedule(&ahc->platform_data->runq_tasklet);
-#else
- /*
- * Tasklets are not available, so run inline.
- */
- ahc_runq_tasklet((unsigned long)ahc);
-#endif
-}
-
-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);
- }
-}
+ dma_addr_t addr, bus_size_t len);
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);
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);
}
}
static __inline int
ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
- struct ahc_dma_seg *sg, bus_addr_t addr, bus_size_t len)
+ struct ahc_dma_seg *sg, dma_addr_t addr, bus_size_t len)
{
int consumed;
sg->addr = ahc_htole32(addr & 0xFFFFFFFF);
scb->platform_data->xfer_len += len;
- if (sizeof(bus_addr_t) > 4
+ if (sizeof(dma_addr_t) > 4
&& (ahc->flags & AHC_39BIT_ADDRESSING) != 0)
len |= (addr >> 8) & AHC_SG_HIGH_ADDR_MASK;
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;
- int eisa_err, pci_err;
-
-#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();
-#ifdef MODULE
- /*
- * If we've been passed any parameters, process them now.
- */
- if (aic7xxx)
- aic7xxx_setup(aic7xxx);
- if (dummy_buffer[0] != 'P')
- printk(KERN_WARNING
-"aic7xxx: Please read the file /usr/src/linux/drivers/scsi/README.aic7xxx\n"
-"aic7xxx: to see the proper way to specify options to the aic7xxx module\n"
-"aic7xxx: Specifically, don't use any commas when passing arguments to\n"
-"aic7xxx: insmod or else it might trash certain memory areas.\n");
-#endif
-
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0)
- template->proc_name = "aic7xxx";
-#else
- template->proc_dir = &proc_scsi_aic7xxx;
-#endif
-
- /*
- * Initialize our softc list lock prior to
- * probing for any adapters.
- */
- ahc_list_lockinit();
-
- pci_err = ahc_linux_pci_init();
- eisa_err = ahc_linux_eisa_init();
-
- if(pci_err && eisa_err)
- goto out;
-
-
- /*
- * 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++;
- }
-out:
-
-#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.
*/
* 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_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_unlock(ahc, &flags);
- ahc_midlayer_entrypoint_lock(ahc, &flags);
+ return rtn;
+}
- /*
- * Close the race of a command that was in the process of
- * being queued to us just as our simq was frozen. Let
- * DV commands through so long as we are only frozen to
- * perform DV.
- */
- if (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_midlayer_entrypoint_unlock(ahc, &flags);
- return (0);
+static inline struct scsi_target **
+ahc_linux_target_in_softc(struct scsi_target *starget)
+{
+ struct ahc_softc *ahc =
+ *((struct ahc_softc **)dev_to_shost(&starget->dev)->hostdata);
+ unsigned int target_offset;
+
+ target_offset = starget->id;
+ if (starget->channel != 0)
+ target_offset += 8;
+
+ return &ahc->platform_data->starget[target_offset];
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
-ahc_linux_slave_alloc(Scsi_Device *device)
+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;
+
+ 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_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_target_destroy(struct scsi_target *starget)
{
- struct ahc_softc *ahc;
+ struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget);
- ahc = *((struct ahc_softc **)device->host->hostdata);
- if (bootverbose)
- printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
- return (0);
+ *ahc_targp = NULL;
}
static int
-ahc_linux_slave_configure(Scsi_Device *device)
+ahc_linux_slave_alloc(struct scsi_device *sdev)
{
- struct ahc_softc *ahc;
- struct ahc_linux_device *dev;
- u_long flags;
+ 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 Configure %d\n", ahc_name(ahc), device->id);
- ahc_midlayer_entrypoint_lock(ahc, &flags);
+ printf("%s: Slave Alloc %d\n", ahc_name(ahc), sdev->id);
+
+ dev = scsi_transport_device_data(sdev);
+ memset(dev, 0, sizeof(*dev));
+
+ /*
+ * We start out life using untagged
+ * transactions of which we allow one.
+ */
+ dev->openings = 1;
+
/*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
+ * Set maxtags to 0. This will be changed if we
+ * later determine that we are dealing with
+ * a tagged queuing capable device.
*/
- dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHC_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahc_linux_device_queue_depth(ahc, dev);
- }
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
- return (0);
+ dev->maxtags = 0;
+
+ spi_period(starget) = 0;
+
+ return 0;
}
-static void
-ahc_linux_slave_destroy(Scsi_Device *device)
+static int
+ahc_linux_slave_configure(struct scsi_device *sdev)
{
struct ahc_softc *ahc;
- struct ahc_linux_device *dev;
- u_long flags;
- ahc = *((struct ahc_softc **)device->host->hostdata);
+ ahc = *((struct ahc_softc **)sdev->host->hostdata);
+
if (bootverbose)
- printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
- ahc_midlayer_entrypoint_lock(ahc, &flags);
- dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/FALSE);
- /*
- * Filter out "silly" deletions of real devices by only
- * deleting devices that have had slave_configure()
- * called on them. All other devices that have not
- * been configured will automatically be deleted by
- * the refcounting process.
- */
- if (dev != NULL
- && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
- dev->flags |= AHC_DEV_UNCONFIGURED;
- if (TAILQ_EMPTY(&dev->busyq)
- && dev->active == 0
- && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
- ahc_linux_free_device(ahc, dev);
- }
- ahc_midlayer_entrypoint_unlock(ahc, &flags);
+ sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
+
+ ahc_linux_device_queue_depth(sdev);
+
+ /* Initial Domain Validation */
+ if (!spi_initial_dv(sdev->sdev_target))
+ spi_dv_device(sdev);
+
+ return 0;
}
-#else
+
+#if defined(__i386__)
/*
- * Sets the queue depth for each SCSI device hanging
- * off the input host adapter.
+ * Return the disk geometry for the given SCSI device.
*/
-static void
-ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
-{
- Scsi_Device *device;
- Scsi_Device *ldev;
- struct ahc_softc *ahc;
- u_long flags;
-
- ahc = *((struct ahc_softc **)host->hostdata);
- ahc_lock(ahc, &flags);
- for (device = scsi_devs; device != NULL; device = device->next) {
-
- /*
- * Watch out for duplicate devices. This works around
- * some quirks in how the SCSI scanning code does its
- * device management.
- */
- for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
- if (ldev->host == device->host
- && ldev->channel == device->channel
- && ldev->id == device->id
- && ldev->lun == device->lun)
- break;
- }
- /* Skip duplicate. */
- if (ldev != device)
- continue;
-
- if (device->host == host) {
- struct ahc_linux_device *dev;
-
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahc_linux_get_device(ahc, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHC_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahc_linux_device_queue_depth(ahc, dev);
- device->queue_depth = dev->openings
- + dev->active;
- if ((dev->flags & (AHC_DEV_Q_BASIC
- | AHC_DEV_Q_TAGGED)) == 0) {
- /*
- * We allow the OS to queue 2 untagged
- * transactions to us at any time even
- * though we can only execute them
- * serially on the controller/device.
- * This should remove some latency.
- */
- device->queue_depth = 2;
- }
- }
- }
- }
- ahc_unlock(ahc, &flags);
-}
-#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[])
+static int
+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;
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);
}
* Abort the current SCSI command(s).
*/
static int
-ahc_linux_abort(Scsi_Cmnd *cmd)
+ahc_linux_abort(struct scsi_cmnd *cmd)
{
int error;
* Attempt to send a target reset message to the device that timed out.
*/
static int
-ahc_linux_dev_reset(Scsi_Cmnd *cmd)
+ahc_linux_dev_reset(struct scsi_cmnd *cmd)
{
int error;
* Reset the SCSI bus.
*/
static int
-ahc_linux_bus_reset(Scsi_Cmnd *cmd)
+ahc_linux_bus_reset(struct scsi_cmnd *cmd)
{
struct ahc_softc *ahc;
- 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. "
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,
#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;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- u_long flags;
-#endif
-
- ahc = (struct ahc_softc *)data;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- ahc_lock(ahc, &flags);
-#endif
- 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);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- /* Yeild to our interrupt handler */
- ahc_unlock(ahc, &flags);
- ahc_lock(ahc, &flags);
-#endif
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- ahc_unlock(ahc, &flags);
-#endif
-}
-
/******************************** Macros **************************************/
#define BUILD_SCSIID(ahc, cmd) \
((((cmd)->device->id << TID_SHIFT) & TID) \
int
ahc_dma_tag_create(struct ahc_softc *ahc, bus_dma_tag_t parent,
bus_size_t alignment, bus_size_t boundary,
- bus_addr_t lowaddr, bus_addr_t highaddr,
+ dma_addr_t lowaddr, dma_addr_t highaddr,
bus_dma_filter_t *filter, void *filterarg,
bus_size_t maxsize, int nsegments,
bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
int flags, bus_dmamap_t *mapp)
{
- bus_dmamap_t map;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- 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 (ahc_pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- return (ENODEV);
- }
*vaddr = pci_alloc_consistent(ahc->dev_softc,
- dmat->maxsize, &map->bus_addr);
- if (ahc->dev_softc != NULL)
- if (ahc_pci_set_dma_mask(ahc->dev_softc,
- ahc->platform_data->hw_dma_mask)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- return (ENODEV);
- }
-#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) */
- /*
- * At least in 2.2.14, malloc is a slab allocator so all
- * allocations are aligned. We assume for these kernel versions
- * that all allocations will be bellow 4Gig, physically contiguous,
- * and accessible via DMA by the controller.
- */
- map = NULL; /* No additional information to store */
- *vaddr = malloc(dmat->maxsize, M_DEVBUF, M_NOWAIT);
-#endif
+ dmat->maxsize, mapp);
if (*vaddr == NULL)
- return (ENOMEM);
- *mapp = map;
- return(0);
+ return ENOMEM;
+ return 0;
}
void
ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
void* vaddr, bus_dmamap_t map)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
pci_free_consistent(ahc->dev_softc, dmat->maxsize,
- vaddr, map->bus_addr);
-#else
- free(vaddr, M_DEVBUF);
-#endif
+ vaddr, map);
}
int
*/
bus_dma_segment_t stack_sg;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- stack_sg.ds_addr = map->bus_addr;
-#else
-#define VIRT_TO_BUS(a) (uint32_t)virt_to_bus((void *)(a))
- stack_sg.ds_addr = VIRT_TO_BUS(buf);
-#endif
+ stack_sg.ds_addr = map;
stack_sg.ds_len = dmat->maxsize;
cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
return (0);
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.
- */
- if (map != NULL)
- free(map, M_DEVBUF);
}
int
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)
{
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;
}
{
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)
}
}
-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);
}
/*
#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 },
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;
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) {
return 1;
}
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0)
__setup("aic7xxx=", aic7xxx_setup);
-#endif
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 *));
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;
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) {
ahc_set_name(ahc, new_name);
}
host->unique_id = ahc->unit;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4) && \
- 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;
}
/*
{
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);
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);
}
}
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;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- 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);
-#else
- ahc->platform_data->eh_sem = MUTEX_LOCKED;
- ahc->platform_data->dv_sem = MUTEX_LOCKED;
- ahc->platform_data->dv_cmd_sem = MUTEX_LOCKED;
-#endif
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
- (unsigned long)ahc);
-#endif
ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
if (aic7xxx_pci_parity == 0)
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);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_kill(&ahc->platform_data->runq_tasklet);
-#endif
- 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;
}
}
release_region(ahc->bsh.ioport, 256);
if (ahc->tag == BUS_SPACE_MEMIO
&& ahc->bsh.maddr != NULL) {
- u_long base_addr;
-
- base_addr = (u_long)ahc->bsh.maddr;
- base_addr &= PAGE_MASK;
- iounmap((void *)base_addr);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+ iounmap(ahc->bsh.maddr);
release_mem_region(ahc->platform_data->mem_busaddr,
0x1000);
-#endif
}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) && \
- 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);
}
}
}
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:
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;
+ return 0;
+}
- dev = ahc_linux_get_device(ahc, chan,
- targ, clun,
- /*alloc*/FALSE);
- if (dev == NULL)
- continue;
+static u_int
+ahc_linux_user_tagdepth(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
+{
+ static int warned_user;
+ u_int tags;
- busyq = &dev->busyq;
- while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
- Scsi_Cmnd *cmd;
+ tags = 0;
+ if ((ahc->user_discenable & devinfo->target_mask) != 0) {
+ if (ahc->unit >= ARRAY_SIZE(aic7xxx_tag_info)) {
+ if (warned_user == 0) {
- cmd = &acmd_scsi_cmd(acmd);
- TAILQ_REMOVE(busyq, acmd,
- acmd_links.tqe);
- count++;
- cmd->result = status << 16;
- ahc_linux_queue_cmd_complete(ahc, cmd);
- }
+ 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 (count);
+ return (tags);
}
+/*
+ * Determines the queue depth for a given device.
+ */
static void
-ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
+ahc_linux_device_queue_depth(struct scsi_device *sdev)
{
- u_long flags;
+ struct ahc_devinfo devinfo;
+ u_int tags;
+ struct ahc_softc *ahc = *((struct ahc_softc **)sdev->host->hostdata);
- 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);
+ 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) {
+
+ 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_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_NONE);
+ ahc_send_async(ahc, devinfo.channel, devinfo.target,
+ devinfo.lun, AC_TRANSFER_NEG);
+ }
}
-static void
-ahc_linux_start_dv(struct ahc_softc *ahc)
+static int
+ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
+ struct scsi_cmnd *cmd)
{
+ struct scb *scb;
+ struct hardware_scb *hscb;
+ struct ahc_initiator_tinfo *tinfo;
+ struct ahc_tmode_tstate *tstate;
+ uint16_t mask;
+ struct scb_tailq *untagged_q = NULL;
/*
- * Freeze the simq and signal ahc_linux_queue to not let any
- * more commands through.
+ * Schedule us to run later. The only reason we are not
+ * running is because the whole controller Q is frozen.
*/
- 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
+ if (ahc->platform_data->qfrozen != 0)
+ return SCSI_MLQUEUE_HOST_BUSY;
- ahc->platform_data->flags |= AHC_DV_ACTIVE;
- ahc_linux_freeze_simq(ahc);
+ /*
+ * We only allow one untagged transaction
+ * per target in the initiator role unless
+ * we are storing a full busy target *lun*
+ * table in SCB space.
+ */
+ if (!blk_rq_tagged(cmd->request)
+ && (ahc->features & AHC_SCB_BTT) == 0) {
+ int target_offset;
- /* Wake up the DV kthread */
- up(&ahc->platform_data->dv_sem);
+ 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;
}
-}
-
-static void
-ahc_linux_kill_dv_thread(struct ahc_softc *ahc)
-{
- 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);
-
- /*
- * 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);
-
- /*
- * 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;
- } else {
- ahc_unlock(ahc, &s);
- }
-}
-
-static int
-ahc_linux_dv_thread(void *data)
-{
- struct ahc_softc *ahc;
- int target;
- u_long s;
-
- ahc = (struct ahc_softc *)data;
-
-#ifdef AHC_DEBUG
- if (ahc_debug & AHC_SHOW_DV)
- printf("Launching DV Thread\n");
-#endif
-
- /*
- * Complete thread creation.
- */
- lock_kernel();
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * Don't care about any signals.
- */
- siginitsetinv(¤t->blocked, 0);
-
- daemonize();
- sprintf(current->comm, "ahc_dv_%d", ahc->unit);
-#else
- daemonize("ahc_dv_%d", ahc->unit);
- current->flags |= PF_FREEZE;
-#endif
- unlock_kernel();
-
- while (1) {
- /*
- * Use down_interruptible() rather than down() to
- * avoid inclusion in the load average.
- */
- down_interruptible(&ahc->platform_data->dv_sem);
-
- /* 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;
- }
- ahc_unlock(ahc, &s);
-
-#ifdef AHC_DEBUG
- if (ahc_debug & AHC_SHOW_DV)
- printf("%s: Beginning Domain Validation\n",
- ahc_name(ahc));
-#endif
-
- /*
- * 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);
- }
-
- /*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
- */
- 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);
-
- /*
- * Release the SIMQ so that normal commands are
- * allowed to continue on the bus.
- */
- 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)
- scsi_sleep(1 * HZ);
-
- 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)
- scsi_sleep(ahc->our_id*HZ/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)
- scsi_sleep(1 * HZ);
- } 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.
+ * Get an scb to use.
*/
- if ((scb = (struct scb *)cmd->host_scribble) == NULL) {
- ahc_unlock(ahc, &flags);
- return;
- }
+ scb = ahc_get_scb(ahc);
+ if (!scb)
+ return SCSI_MLQUEUE_HOST_BUSY;
- /*
- * 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);
+ scb->io_ctx = cmd;
+ scb->platform_data->dev = dev;
+ hscb = scb->hscb;
+ cmd->host_scribble = (char *)scb;
/*
- * Add a minimal bus settle delay for devices that are slow to
- * respond after bus resets.
+ * Fill out basics of the HSCB.
*/
- 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;
- }
- }
+ 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;
}
-}
-
-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;
+ 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 {
- 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;
+ hscb->control |= MSG_SIMPLE_TASK;
}
}
- 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;
+ hscb->cdb_len = cmd->cmd_len;
+ if (hscb->cdb_len <= 12) {
+ memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
} else {
-
- dv = aic7xxx_dv_settings[ahc->unit];
+ memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
+ scb->flags |= SCB_CDB32_PTR;
}
- if (dv < 0) {
- u_long s;
-
- /*
- * Apply the default.
- */
+ 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;
/*
- * 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);
-}
+ * 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);
-/*
- * 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.
+ * Reset the sg list pointer.
*/
- 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;
-
+ scb->hscb->sgptr =
+ ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
+
/*
- * Fill out basics of the HSCB.
+ * Copy the first SG into the "current"
+ * data pointer area.
*/
- 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) {
- bus_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;
- bus_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;
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);
}
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);
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);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- 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:
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
if (ahc->platform_data->host != NULL) {
scsi_report_bus_reset(ahc->platform_data->host,
channel - 'A');
}
-#endif
break;
default:
panic("ahc_send_async: Unexpected async event");
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);
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) {
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
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);
/*
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
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))
}
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;
*/
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)) {
new_status = DID_ERROR;
break;
case CAM_REQUEUE_REQ:
- /*
- * If we want the request requeued, make sure there
- * are sufficent retries. In the old scsi error code,
- * we used to be able to specify a result code that
- * bypassed the retry count. Now we must use this
- * hack. We also "fake" a check condition with
- * a sense code of ABORTED COMMAND. This seems to
- * evoke a retry even if this command is being sent
- * via the eh thread. Ick! Ick! Ick!
- */
- if (cmd->retries > 0)
- cmd->retries--;
- new_status = DID_OK;
- ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
- cmd->result |= (DRIVER_SENSE << 24);
- memset(cmd->sense_buffer, 0,
- sizeof(cmd->sense_buffer));
- cmd->sense_buffer[0] = SSD_ERRCODE_VALID
- | SSD_CURRENT_ERROR;
- cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
+ new_status = DID_REQUEUE;
break;
default:
/* We should never get here */
ahc_cmd_set_transaction_status(cmd, new_status);
}
- completeq = &ahc->platform_data->completeq;
- list_cmd = TAILQ_FIRST(completeq);
- acmd = (struct ahc_cmd *)cmd;
- while (list_cmd != NULL
- && acmd_scsi_cmd(list_cmd).serial_number
- < acmd_scsi_cmd(acmd).serial_number)
- list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
- if (list_cmd != NULL)
- TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
- else
- TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
-}
-
-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);
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
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;
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:");
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.
* 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) {
/*
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',
/* 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;
}
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;
}
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
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) {
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;
}
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;
- u_long l;
+ 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.
- */
- ahc_list_lock(&l);
- 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;
}
- ahc_list_unlock(&l);
-#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);
git://git.onelab.eu / linux-2.6.git / blobdiff