forked from luck/tmp_suning_uos_patched
[SCSI] aic79xx: sane pci probing
remove ahd_tailq and do sane pci probing. ported over from aic7xxx. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig
James Bottomley
parent
d46b1d549e
commit
85a46523ff
@ -1247,9 +1247,6 @@ struct ahd_softc {
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uint16_t user_tagenable;/* Tagged Queuing allowed */
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};
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TAILQ_HEAD(ahd_softc_tailq, ahd_softc);
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extern struct ahd_softc_tailq ahd_tailq;
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/*************************** IO Cell Configuration ****************************/
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#define AHD_PRECOMP_SLEW_INDEX \
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(AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0)
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@ -1374,8 +1371,6 @@ void ahd_enable_coalescing(struct ahd_softc *ahd,
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void ahd_pause_and_flushwork(struct ahd_softc *ahd);
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int ahd_suspend(struct ahd_softc *ahd);
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int ahd_resume(struct ahd_softc *ahd);
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void ahd_softc_insert(struct ahd_softc *);
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struct ahd_softc *ahd_find_softc(struct ahd_softc *ahd);
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void ahd_set_unit(struct ahd_softc *, int);
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void ahd_set_name(struct ahd_softc *, char *);
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struct scb *ahd_get_scb(struct ahd_softc *ahd, u_int col_idx);
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@ -1524,7 +1519,6 @@ void ahd_print_scb(struct scb *scb);
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void ahd_print_devinfo(struct ahd_softc *ahd,
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struct ahd_devinfo *devinfo);
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void ahd_dump_sglist(struct scb *scb);
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void ahd_dump_all_cards_state(void);
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void ahd_dump_card_state(struct ahd_softc *ahd);
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int ahd_print_register(ahd_reg_parse_entry_t *table,
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u_int num_entries,
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@ -52,8 +52,6 @@
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#include <dev/aic7xxx/aicasm/aicasm_insformat.h>
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#endif
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/******************************** Globals *************************************/
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struct ahd_softc_tailq ahd_tailq = TAILQ_HEAD_INITIALIZER(ahd_tailq);
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/***************************** Lookup Tables **********************************/
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char *ahd_chip_names[] =
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@ -5179,74 +5177,6 @@ ahd_softc_init(struct ahd_softc *ahd)
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return (0);
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}
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void
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ahd_softc_insert(struct ahd_softc *ahd)
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{
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struct ahd_softc *list_ahd;
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#if AHD_PCI_CONFIG > 0
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/*
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* Second Function PCI devices need to inherit some
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* settings from function 0.
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*/
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if ((ahd->features & AHD_MULTI_FUNC) != 0) {
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TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
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ahd_dev_softc_t list_pci;
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ahd_dev_softc_t pci;
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list_pci = list_ahd->dev_softc;
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pci = ahd->dev_softc;
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if (ahd_get_pci_slot(list_pci) == ahd_get_pci_slot(pci)
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&& ahd_get_pci_bus(list_pci) == ahd_get_pci_bus(pci)) {
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struct ahd_softc *master;
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struct ahd_softc *slave;
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if (ahd_get_pci_function(list_pci) == 0) {
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master = list_ahd;
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slave = ahd;
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} else {
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master = ahd;
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slave = list_ahd;
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}
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slave->flags &= ~AHD_BIOS_ENABLED;
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slave->flags |=
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master->flags & AHD_BIOS_ENABLED;
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break;
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}
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}
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}
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#endif
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/*
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* Insertion sort into our list of softcs.
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*/
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list_ahd = TAILQ_FIRST(&ahd_tailq);
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while (list_ahd != NULL
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&& ahd_softc_comp(ahd, list_ahd) <= 0)
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list_ahd = TAILQ_NEXT(list_ahd, links);
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if (list_ahd != NULL)
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TAILQ_INSERT_BEFORE(list_ahd, ahd, links);
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else
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TAILQ_INSERT_TAIL(&ahd_tailq, ahd, links);
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ahd->init_level++;
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}
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/*
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* Verify that the passed in softc pointer is for a
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* controller that is still configured.
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*/
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struct ahd_softc *
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ahd_find_softc(struct ahd_softc *ahd)
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{
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struct ahd_softc *list_ahd;
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TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
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if (list_ahd == ahd)
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return (ahd);
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}
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return (NULL);
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}
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void
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ahd_set_unit(struct ahd_softc *ahd, int unit)
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{
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@ -7902,18 +7832,10 @@ ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset)
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static void
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ahd_reset_poll(void *arg)
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{
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struct ahd_softc *ahd;
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struct ahd_softc *ahd = arg;
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u_int scsiseq1;
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u_long l;
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u_long s;
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ahd_list_lock(&l);
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ahd = ahd_find_softc((struct ahd_softc *)arg);
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if (ahd == NULL) {
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printf("ahd_reset_poll: Instance %p no longer exists\n", arg);
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ahd_list_unlock(&l);
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return;
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}
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ahd_lock(ahd, &s);
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ahd_pause(ahd);
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ahd_update_modes(ahd);
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@ -7924,7 +7846,6 @@ ahd_reset_poll(void *arg)
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ahd_reset_poll, ahd);
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ahd_unpause(ahd);
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ahd_unlock(ahd, &s);
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ahd_list_unlock(&l);
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return;
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}
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@ -7936,25 +7857,16 @@ ahd_reset_poll(void *arg)
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ahd->flags &= ~AHD_RESET_POLL_ACTIVE;
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ahd_unlock(ahd, &s);
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ahd_release_simq(ahd);
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ahd_list_unlock(&l);
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}
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/**************************** Statistics Processing ***************************/
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static void
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ahd_stat_timer(void *arg)
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{
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struct ahd_softc *ahd;
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u_long l;
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struct ahd_softc *ahd = arg;
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u_long s;
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int enint_coal;
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ahd_list_lock(&l);
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ahd = ahd_find_softc((struct ahd_softc *)arg);
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if (ahd == NULL) {
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printf("ahd_stat_timer: Instance %p no longer exists\n", arg);
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ahd_list_unlock(&l);
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return;
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}
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ahd_lock(ahd, &s);
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enint_coal = ahd->hs_mailbox & ENINT_COALESCE;
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@ -7981,7 +7893,6 @@ ahd_stat_timer(void *arg)
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ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US,
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ahd_stat_timer, ahd);
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ahd_unlock(ahd, &s);
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ahd_list_unlock(&l);
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}
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/****************************** Status Processing *****************************/
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@ -8745,16 +8656,6 @@ ahd_probe_stack_size(struct ahd_softc *ahd)
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return (last_probe);
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}
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void
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ahd_dump_all_cards_state(void)
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{
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struct ahd_softc *list_ahd;
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TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
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ahd_dump_card_state(list_ahd);
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}
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}
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int
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ahd_print_register(ahd_reg_parse_entry_t *table, u_int num_entries,
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const char *name, u_int address, u_int value,
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@ -59,11 +59,6 @@ static struct scsi_transport_template *ahd_linux_transport_template = NULL;
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#include <linux/blkdev.h> /* For block_size() */
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#include <linux/delay.h> /* For ssleep/msleep */
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/*
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* Lock protecting manipulation of the ahd softc list.
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*/
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spinlock_t ahd_list_spinlock;
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/*
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* Bucket size for counting good commands in between bad ones.
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*/
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@ -302,13 +297,6 @@ static uint32_t aic79xx_pci_parity = ~0;
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*/
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uint32_t aic79xx_allow_memio = ~0;
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/*
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* aic79xx_detect() has been run, so register all device arrivals
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* immediately with the system rather than deferring to the sorted
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* attachment performed by aic79xx_detect().
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*/
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int aic79xx_detect_complete;
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/*
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* So that we can set how long each device is given as a selection timeout.
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* The table of values goes like this:
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@ -387,7 +375,9 @@ static void ahd_linux_setup_tag_info_global(char *p);
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static aic_option_callback_t ahd_linux_setup_tag_info;
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static aic_option_callback_t ahd_linux_setup_iocell_info;
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static int aic79xx_setup(char *c);
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static int ahd_linux_next_unit(void);
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static int ahd_linux_unit;
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/****************************** Inlines ***************************************/
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static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
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@ -417,50 +407,6 @@ ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
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#define BUILD_SCSIID(ahd, cmd) \
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((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
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/*
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* Try to detect an Adaptec 79XX controller.
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*/
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static int
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ahd_linux_detect(struct scsi_host_template *template)
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{
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struct ahd_softc *ahd;
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int found;
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int error = 0;
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/*
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* If we've been passed any parameters, process them now.
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*/
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if (aic79xx)
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aic79xx_setup(aic79xx);
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template->proc_name = "aic79xx";
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/*
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* Initialize our softc list lock prior to
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* probing for any adapters.
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*/
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ahd_list_lockinit();
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#ifdef CONFIG_PCI
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error = ahd_linux_pci_init();
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if (error)
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return error;
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#endif
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/*
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* Register with the SCSI layer all
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* controllers we've found.
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*/
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found = 0;
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TAILQ_FOREACH(ahd, &ahd_tailq, links) {
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if (ahd_linux_register_host(ahd, template) == 0)
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found++;
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}
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aic79xx_detect_complete++;
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return found;
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}
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/*
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* Return a string describing the driver.
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*/
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@ -760,6 +706,7 @@ ahd_linux_bus_reset(struct scsi_cmnd *cmd)
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struct scsi_host_template aic79xx_driver_template = {
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.module = THIS_MODULE,
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.name = "aic79xx",
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.proc_name = "aic79xx",
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.proc_info = ahd_linux_proc_info,
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.info = ahd_linux_info,
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.queuecommand = ahd_linux_queue,
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@ -1072,7 +1019,7 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
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host->max_lun = AHD_NUM_LUNS;
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host->max_channel = 0;
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host->sg_tablesize = AHD_NSEG;
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ahd_set_unit(ahd, ahd_linux_next_unit());
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ahd_set_unit(ahd, ahd_linux_unit++);
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sprintf(buf, "scsi%d", host->host_no);
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new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
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if (new_name != NULL) {
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@ -1100,29 +1047,6 @@ ahd_linux_get_memsize(void)
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return ((uint64_t)si.totalram << PAGE_SHIFT);
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}
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/*
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* Find the smallest available unit number to use
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* for a new device. We don't just use a static
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* count to handle the "repeated hot-(un)plug"
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* scenario.
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*/
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static int
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ahd_linux_next_unit(void)
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{
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struct ahd_softc *ahd;
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int unit;
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unit = 0;
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retry:
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TAILQ_FOREACH(ahd, &ahd_tailq, links) {
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if (ahd->unit == unit) {
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unit++;
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goto retry;
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}
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}
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return (unit);
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}
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/*
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* Place the SCSI bus into a known state by either resetting it,
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* or forcing transfer negotiations on the next command to any
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@ -2755,23 +2679,31 @@ static struct spi_function_template ahd_linux_transport_functions = {
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.show_hold_mcs = 1,
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};
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static int __init
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ahd_linux_init(void)
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{
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ahd_linux_transport_template = spi_attach_transport(&ahd_linux_transport_functions);
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int error = 0;
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/*
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* If we've been passed any parameters, process them now.
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*/
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if (aic79xx)
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aic79xx_setup(aic79xx);
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ahd_linux_transport_template =
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spi_attach_transport(&ahd_linux_transport_functions);
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if (!ahd_linux_transport_template)
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return -ENODEV;
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scsi_transport_reserve_target(ahd_linux_transport_template,
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sizeof(struct ahd_linux_target));
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scsi_transport_reserve_device(ahd_linux_transport_template,
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sizeof(struct ahd_linux_device));
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if (ahd_linux_detect(&aic79xx_driver_template) > 0)
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return 0;
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spi_release_transport(ahd_linux_transport_template);
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return -ENODEV;
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error = ahd_linux_pci_init();
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if (error)
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spi_release_transport(ahd_linux_transport_template);
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return error;
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}
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static void __exit
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@ -120,7 +120,6 @@ typedef struct scsi_cmnd *ahd_io_ctx_t;
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/************************* Configuration Data *********************************/
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extern uint32_t aic79xx_allow_memio;
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extern int aic79xx_detect_complete;
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extern struct scsi_host_template aic79xx_driver_template;
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/***************************** Bus Space/DMA **********************************/
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@ -532,17 +531,6 @@ void ahd_format_transinfo(struct info_str *info,
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struct ahd_transinfo *tinfo);
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/******************************** Locking *************************************/
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/* Lock protecting internal data structures */
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static __inline void ahd_lockinit(struct ahd_softc *);
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static __inline void ahd_lock(struct ahd_softc *, unsigned long *flags);
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static __inline void ahd_unlock(struct ahd_softc *, unsigned long *flags);
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/* Lock held during ahd_list manipulation and ahd softc frees */
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extern spinlock_t ahd_list_spinlock;
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static __inline void ahd_list_lockinit(void);
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static __inline void ahd_list_lock(unsigned long *flags);
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static __inline void ahd_list_unlock(unsigned long *flags);
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static __inline void
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ahd_lockinit(struct ahd_softc *ahd)
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{
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@ -561,24 +549,6 @@ ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
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spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
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}
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static __inline void
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ahd_list_lockinit(void)
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{
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spin_lock_init(&ahd_list_spinlock);
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}
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static __inline void
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ahd_list_lock(unsigned long *flags)
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{
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spin_lock_irqsave(&ahd_list_spinlock, *flags);
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}
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static __inline void
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ahd_list_unlock(unsigned long *flags)
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{
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spin_unlock_irqrestore(&ahd_list_spinlock, *flags);
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}
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/******************************* PCI Definitions ******************************/
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/*
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* PCIM_xxx: mask to locate subfield in register
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@ -92,27 +92,31 @@ struct pci_driver aic79xx_pci_driver = {
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static void
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ahd_linux_pci_dev_remove(struct pci_dev *pdev)
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{
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struct ahd_softc *ahd;
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u_long l;
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/*
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* We should be able to just perform
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* the free directly, but check our
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* list for extra sanity.
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*/
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ahd_list_lock(&l);
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ahd = ahd_find_softc((struct ahd_softc *)pci_get_drvdata(pdev));
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if (ahd != NULL) {
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struct ahd_softc *ahd = pci_get_drvdata(pdev);
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u_long s;
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TAILQ_REMOVE(&ahd_tailq, ahd, links);
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ahd_list_unlock(&l);
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ahd_lock(ahd, &s);
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ahd_intr_enable(ahd, FALSE);
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ahd_unlock(ahd, &s);
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ahd_free(ahd);
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}
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static void
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ahd_linux_pci_inherit_flags(struct ahd_softc *ahd)
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{
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struct pci_dev *pdev = ahd->dev_softc, *master_pdev;
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unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0);
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master_pdev = pci_get_slot(pdev->bus, master_devfn);
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||||
if (master_pdev) {
|
||||
struct ahd_softc *master = pci_get_drvdata(master_pdev);
|
||||
if (master) {
|
||||
ahd->flags &= ~AHD_BIOS_ENABLED;
|
||||
ahd->flags |= master->flags & AHD_BIOS_ENABLED;
|
||||
} else
|
||||
ahd_list_unlock(&l);
|
||||
printk(KERN_ERR "aic79xx: no multichannel peer found!\n");
|
||||
pci_dev_put(master_pdev);
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
@ -125,22 +129,6 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
||||
char *name;
|
||||
int error;
|
||||
|
||||
/*
|
||||
* Some BIOSen report the same device multiple times.
|
||||
*/
|
||||
TAILQ_FOREACH(ahd, &ahd_tailq, links) {
|
||||
struct pci_dev *probed_pdev;
|
||||
|
||||
probed_pdev = ahd->dev_softc;
|
||||
if (probed_pdev->bus->number == pdev->bus->number
|
||||
&& probed_pdev->devfn == pdev->devfn)
|
||||
break;
|
||||
}
|
||||
if (ahd != NULL) {
|
||||
/* Skip duplicate. */
|
||||
return (-ENODEV);
|
||||
}
|
||||
|
||||
pci = pdev;
|
||||
entry = ahd_find_pci_device(pci);
|
||||
if (entry == NULL)
|
||||
@ -190,16 +178,17 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
||||
ahd_free(ahd);
|
||||
return (-error);
|
||||
}
|
||||
|
||||
/*
|
||||
* Second Function PCI devices need to inherit some
|
||||
* * settings from function 0.
|
||||
*/
|
||||
if ((ahd->features & AHD_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0)
|
||||
ahd_linux_pci_inherit_flags(ahd);
|
||||
|
||||
pci_set_drvdata(pdev, ahd);
|
||||
if (aic79xx_detect_complete) {
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
|
||||
|
||||
ahd_linux_register_host(ahd, &aic79xx_driver_template);
|
||||
#else
|
||||
printf("aic79xx: ignoring PCI device found after "
|
||||
"initialization\n");
|
||||
return (-ENODEV);
|
||||
#endif
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
@ -283,7 +283,6 @@ int
|
||||
ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
|
||||
{
|
||||
struct scb_data *shared_scb_data;
|
||||
u_long l;
|
||||
u_int command;
|
||||
uint32_t devconfig;
|
||||
uint16_t subvendor;
|
||||
@ -373,16 +372,9 @@ ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
|
||||
* Allow interrupts now that we are completely setup.
|
||||
*/
|
||||
error = ahd_pci_map_int(ahd);
|
||||
if (error != 0)
|
||||
return (error);
|
||||
|
||||
ahd_list_lock(&l);
|
||||
/*
|
||||
* Link this softc in with all other ahd instances.
|
||||
*/
|
||||
ahd_softc_insert(ahd);
|
||||
ahd_list_unlock(&l);
|
||||
return (0);
|
||||
if (!error)
|
||||
ahd->init_level++;
|
||||
return error;
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@ -285,21 +285,13 @@ int
|
||||
ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
|
||||
off_t offset, int length, int inout)
|
||||
{
|
||||
struct ahd_softc *ahd;
|
||||
struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
|
||||
struct info_str info;
|
||||
char ahd_info[256];
|
||||
u_long l;
|
||||
u_int max_targ;
|
||||
u_int i;
|
||||
int retval;
|
||||
|
||||
retval = -EINVAL;
|
||||
ahd_list_lock(&l);
|
||||
ahd = ahd_find_softc(*(struct ahd_softc **)shost->hostdata);
|
||||
|
||||
if (ahd == NULL)
|
||||
goto done;
|
||||
|
||||
/* Has data been written to the file? */
|
||||
if (inout == TRUE) {
|
||||
retval = ahd_proc_write_seeprom(ahd, buffer, length);
|
||||
@ -349,6 +341,5 @@ ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
|
||||
}
|
||||
retval = info.pos > info.offset ? info.pos - info.offset : 0;
|
||||
done:
|
||||
ahd_list_unlock(&l);
|
||||
return (retval);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user