diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aic7xxx_osm.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic7xxx_osm.c | 152 |
1 files changed, 4 insertions, 148 deletions
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index f94a67be0be..116d0f51ca2 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -136,10 +136,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL; #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; /* * Set this to the delay in seconds after SCSI bus reset. @@ -292,25 +288,6 @@ ahc_print_path(struct ahc_softc *ahc, struct scb *scb) static uint32_t aic7xxx_no_reset; /* - * Certain PCI motherboards will scan PCI devices from highest to lowest, - * others scan from lowest to highest, and they tend to do all kinds of - * strange things when they come into contact with PCI bridge chips. The - * net result of all this is that the PCI card that is actually used to boot - * the machine is very hard to detect. Most motherboards go from lowest - * PCI slot number to highest, and the first SCSI controller found is the - * one you boot from. The only exceptions to this are when a controller - * has its BIOS disabled. So, we by default sort all of our SCSI controllers - * from lowest PCI slot number to highest PCI slot number. We also force - * all controllers with their BIOS disabled to the end of the list. This - * works on *almost* all computers. Where it doesn't work, we have this - * option. Setting this option to non-0 will reverse the order of the sort - * to highest first, then lowest, but will still leave cards with their BIOS - * disabled at the very end. That should fix everyone up unless there are - * really strange cirumstances. - */ -static uint32_t aic7xxx_reverse_scan; - -/* * Should we force EXTENDED translation on a controller. * 0 == Use whatever is in the SEEPROM or default to off * 1 == Use whatever is in the SEEPROM or default to on @@ -416,7 +393,9 @@ static int ahc_linux_run_command(struct ahc_softc*, static void ahc_linux_setup_tag_info_global(char *p); static aic_option_callback_t ahc_linux_setup_tag_info; static int aic7xxx_setup(char *s); -static int ahc_linux_next_unit(void); + +static int ahc_linux_unit; + /********************************* Inlines ************************************/ static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*); @@ -911,99 +890,6 @@ ahc_dmamap_unload(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map) return (0); } -/********************* Platform Dependent Functions ***************************/ -/* - * Compare "left hand" softc with "right hand" softc, returning: - * < 0 - lahc has a lower priority than rahc - * 0 - Softcs are equal - * > 0 - lahc has a higher priority than rahc - */ -int -ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc) -{ - int value; - int rvalue; - int lvalue; - - /* - * Under Linux, cards are ordered as follows: - * 1) VLB/EISA BIOS enabled devices sorted by BIOS address. - * 2) PCI devices with BIOS enabled sorted by bus/slot/func. - * 3) All remaining VLB/EISA devices sorted by ioport. - * 4) All remaining PCI devices sorted by bus/slot/func. - */ - value = (lahc->flags & AHC_BIOS_ENABLED) - - (rahc->flags & AHC_BIOS_ENABLED); - if (value != 0) - /* Controllers with BIOS enabled have a *higher* priority */ - return (value); - - /* - * Same BIOS setting, now sort based on bus type. - * EISA and VL controllers sort together. EISA/VL - * have higher priority than PCI. - */ - rvalue = (rahc->chip & AHC_BUS_MASK); - if (rvalue == AHC_VL) - rvalue = AHC_EISA; - lvalue = (lahc->chip & AHC_BUS_MASK); - if (lvalue == AHC_VL) - lvalue = AHC_EISA; - value = rvalue - lvalue; - if (value != 0) - return (value); - - /* Still equal. Sort by BIOS address, ioport, or bus/slot/func. */ - switch (rvalue) { -#ifdef CONFIG_PCI - case AHC_PCI: - { - char primary_channel; - - if (aic7xxx_reverse_scan != 0) - value = ahc_get_pci_bus(lahc->dev_softc) - - ahc_get_pci_bus(rahc->dev_softc); - else - value = ahc_get_pci_bus(rahc->dev_softc) - - ahc_get_pci_bus(lahc->dev_softc); - if (value != 0) - break; - if (aic7xxx_reverse_scan != 0) - value = ahc_get_pci_slot(lahc->dev_softc) - - ahc_get_pci_slot(rahc->dev_softc); - else - value = ahc_get_pci_slot(rahc->dev_softc) - - ahc_get_pci_slot(lahc->dev_softc); - if (value != 0) - break; - /* - * On multi-function devices, the user can choose - * to have function 1 probed before function 0. - * Give whichever channel is the primary channel - * the highest priority. - */ - primary_channel = (lahc->flags & AHC_PRIMARY_CHANNEL) + 'A'; - value = -1; - if (lahc->channel == primary_channel) - value = 1; - break; - } -#endif - case AHC_EISA: - if ((rahc->flags & AHC_BIOS_ENABLED) != 0) { - value = rahc->platform_data->bios_address - - lahc->platform_data->bios_address; - } else { - value = rahc->bsh.ioport - - lahc->bsh.ioport; - } - break; - default: - panic("ahc_softc_sort: invalid bus type"); - } - return (value); -} - static void ahc_linux_setup_tag_info_global(char *p) { @@ -1055,7 +941,6 @@ aic7xxx_setup(char *s) #ifdef AHC_DEBUG { "debug", &ahc_debug }, #endif - { "reverse_scan", &aic7xxx_reverse_scan }, { "periodic_otag", &aic7xxx_periodic_otag }, { "pci_parity", &aic7xxx_pci_parity }, { "seltime", &aic7xxx_seltime }, @@ -1130,7 +1015,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *templa 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_set_unit(ahc, ahc_linux_unit++); sprintf(buf, "scsi%d", host->host_no); new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); if (new_name != NULL) { @@ -1159,29 +1044,6 @@ ahc_linux_get_memsize(void) } /* - * 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; - } - } - return (unit); -} - -/* * Place the SCSI bus into a known state by either resetting it, * or forcing transfer negotiations on the next command to any * target. @@ -2685,12 +2547,6 @@ ahc_linux_init(void) scsi_transport_reserve_device(ahc_linux_transport_template, sizeof(struct ahc_linux_device)); - /* - * Initialize our softc list lock prior to - * probing for any adapters. - */ - ahc_list_lockinit(); - ahc_linux_pci_init(); ahc_linux_eisa_init(); return 0; |