Incremental to "probe legacy chipsets in ide_init()" patch.
-- BartlomiejIDE: save ide boot parameters in __initdata structs.
Instead of applying boot parameters directly to hwifs/drives in ide_setup() save them in temporary buffers and apply them later to real hwifs/drives in ide_init(). I think I've covered all corner cases and there is no change in functionality.
This change allows dynamic hwifs/drives allocation and killing init_ide_data().
drivers/ide/ide.c | 230 +++++++++++++++++++++++++++++++++++++++--------------- 1 files changed, 168 insertions(+), 62 deletions(-)
diff -puN drivers/ide/ide.c~ide_setup_params drivers/ide/ide.c --- linux-2.5.69-bk17/drivers/ide/ide.c~ide_setup_params Mon May 26 13:38:12 2003 +++ linux-2.5.69-bk17-root/drivers/ide/ide.c Mon May 26 15:59:38 2003 @@ -1722,6 +1722,111 @@ extern void init_qd65xx(void); static int __initdata is_chipset_set[MAX_HWIFS]; +typedef struct drive_params_s { + unsigned nobios : 1; + unsigned noprobe : 1; + unsigned present : 1; + unsigned slow : 1; + unsigned bswap : 1; + unsigned nowerr : 1; + unsigned remap_0_to_1 : 2; + unsigned forced_geom : 1; + unsigned forced_lun : 1; + unsigned scsi : 1; + unsigned ata_flash : 1; + unsigned autotune : 3; + u8 media; + char driver_req[10]; + int last_lun; + int head, sect, cyl; /* valid iff forced_geom=1 */ +} drive_params_t; + +typedef struct hwif_params_s { + unsigned noprobe : 1; + unsigned noprobe_valid : 1; + unsigned four : 1; + unsigned generic : 1; + unsigned serialize : 1; + unsigned reset : 1; + unsigned autodma : 1; + unsigned udma_four : 1; + int base, ctl, irq; /* valid iff generic=1 */ + drive_params_t dp[MAX_DRIVES]; +} hwif_params_t; + +static __initdata hwif_params_t hwifs_params[MAX_HWIFS]; + +static void __init drive_apply_params(ide_drive_t *drive, drive_params_t *dp) +{ + if (dp->nobios) + drive->nobios = 1; + if (dp->noprobe) + drive->noprobe = 1; + if (dp->present) { + drive->present = 1; + drive->media = dp->media; + } + if (dp->slow) + drive->slow = 1; + if (dp->bswap) + drive->bswap = 1; + if (dp->nowerr) + drive->bad_wstat = BAD_R_STAT; + if (dp->remap_0_to_1) + drive->remap_0_to_1 = dp->remap_0_to_1; + if (dp->forced_geom) { + drive->cyl = drive->bios_cyl = dp->cyl; + drive->head = drive->bios_head = dp->head; + drive->sect = drive->bios_sect = dp->sect; + } + if (dp->forced_lun) + drive->last_lun = dp->last_lun; + if (dp->scsi) + drive->scsi = 1; + if (dp->ata_flash) + drive->ata_flash = 1; + drive->autotune = dp->autotune; + if (dp->driver_req[0]) + strncpy(drive->driver_req, dp->driver_req, 9); +} + +static void __init hwif_apply_params(ide_hwif_t *hwif, hwif_params_t *hp) +{ + ide_hwif_t *mate = &ide_hwifs[hwif->index^1]; + unsigned int i = 0; + + if (hp->noprobe_valid) + hwif->noprobe = hp->noprobe; + if (hp->four) { + mate->drives[0].select.all ^= 0x20; + mate->drives[1].select.all ^= 0x20; + hwif->chipset = mate->chipset = ide_4drives; + mate->irq = hwif->irq; + memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); + } else if (hp->generic) { + hwif->hw.irq = hp->irq; + ide_init_hwif_ports(&hwif->hw, (unsigned long) hp->base, + (unsigned long) hp->ctl, &hwif->irq); + memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); + hwif->irq = hp->irq; + hwif->chipset = ide_generic; + } + if (hp->serialize) { + hwif->mate = mate; + mate->mate = hwif; + hwif->serialized = hwif->mate->serialized = 1; + } + if (hp->reset) + hwif->reset = 1; + if (hp->autodma) + hwif->autodma = 1; + if (hp->udma_four) + hwif->udma_four = 1; + + for (i = 0; i < MAX_DRIVES; i++) + drive_apply_params(&hwif->drives[i], &hp->dp[i]); +} + /* * ide_setup() gets called VERY EARLY during initialization, * to handle kernel "command line" strings beginning with "hdx=" @@ -1808,8 +1913,8 @@ static int __initdata is_chipset_set[MAX int __init ide_setup (char *s) { int i, vals[3]; - ide_hwif_t *hwif; - ide_drive_t *drive; + hwif_params_t *hp; + drive_params_t *dp; unsigned int hw, unit; const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); const char max_hwif = '0' + (MAX_HWIFS - 1); @@ -1862,10 +1967,10 @@ int __init ide_setup (char *s) unit = s[2] - 'a'; hw = unit / MAX_DRIVES; unit = unit % MAX_DRIVES; - hwif = &ide_hwifs[hw]; - drive = &hwif->drives[unit]; + hp = &hwifs_params[hw]; + dp = &hp->dp[unit]; if (strncmp(s + 4, "ide-", 4) == 0) { - strncpy(drive->driver_req, s + 4, 9); + strncpy(dp->driver_req, s+4, 9); goto done; } /* @@ -1875,71 +1980,75 @@ int __init ide_setup (char *s) if (match_parm(&s[6], NULL, vals, 1) != 1) goto bad_option; if (vals[0] >= 0 && vals[0] <= 7) { - drive->last_lun = vals[0]; - drive->forced_lun = 1; + dp->last_lun = vals[0]; + dp->forced_lun = 1; } else printk(" -- BAD LAST LUN! Expected value from 0 to 7"); goto done; } switch (match_parm(&s[3], hd_words, vals, 3)) { case -1: /* "none" */ - drive->nobios = 1; /* drop into "noprobe" */ + dp->nobios = 1; /* drop into "noprobe" */ case -2: /* "noprobe" */ - drive->noprobe = 1; + dp->noprobe = 1; goto done; case -3: /* "nowerr" */ - drive->bad_wstat = BAD_R_STAT; - hwif->noprobe = 0; + dp->nowerr = 1; + hp->noprobe = 0; + hp->noprobe_valid = 1; goto done; case -4: /* "cdrom" */ - drive->present = 1; - drive->media = ide_cdrom; - hwif->noprobe = 0; + dp->present = 1; + dp->media = ide_cdrom; + hp->noprobe = 0; + hp->noprobe_valid = 1; goto done; case -5: /* "serialize" */ printk(" -- USE \"ide%d=serialize\" INSTEAD", hw); - goto do_serialize; + hp->serialize = 1; + goto done; case -6: /* "autotune" */ - drive->autotune = IDE_TUNE_AUTO; + dp->autotune = IDE_TUNE_AUTO; goto done; case -7: /* "noautotune" */ - drive->autotune = IDE_TUNE_NOAUTO; + dp->autotune = IDE_TUNE_NOAUTO; goto done; case -8: /* "slow" */ - drive->slow = 1; + dp->slow = 1; goto done; case -9: /* "swapdata" or "bswap" */ case -10: - drive->bswap = 1; + dp->bswap = 1; goto done; case -11: /* "flash" */ - drive->ata_flash = 1; + dp->ata_flash = 1; goto done; case -12: /* "remap" */ - drive->remap_0_to_1 = 1; + dp->remap_0_to_1 = 1; goto done; case -13: /* "noremap" */ - drive->remap_0_to_1 = 2; + dp->remap_0_to_1 = 2; goto done; case -14: /* "scsi" */ #if defined(CONFIG_BLK_DEV_IDESCSI) && defined(CONFIG_SCSI) - drive->scsi = 1; + dp->scsi = 1; goto done; #else - drive->scsi = 0; + dp->scsi = 0; goto bad_option; #endif /* defined(CONFIG_BLK_DEV_IDESCSI) && defined(CONFIG_SCSI) */ case -15: /* "biostimings" */ - drive->autotune = IDE_TUNE_BIOS; + dp->autotune = IDE_TUNE_BIOS; goto done; case 3: /* cyl,head,sect */ - drive->media = ide_disk; - drive->cyl = drive->bios_cyl = vals[0]; - drive->head = drive->bios_head = vals[1]; - drive->sect = drive->bios_sect = vals[2]; - drive->present = 1; - drive->forced_geom = 1; - hwif->noprobe = 0; + dp->present = 1; + dp->media = ide_disk; + dp->forced_geom = 1; + dp->cyl = vals[0]; + dp->head = vals[1]; + dp->sect = vals[2]; + hp->noprobe = 0; + hp->noprobe_valid = 1; goto done; default: goto bad_option; @@ -1974,7 +2083,7 @@ int __init ide_setup (char *s) "minus10", "four", "qd65xx", "ht6560b", "cmd640_vlb", "dtc2278", "umc8672", "ali14xx", "dc4030", NULL }; hw = s[3] - '0'; - hwif = &ide_hwifs[hw]; + hp = &hwifs_params[hw]; i = match_parm(&s[4], ide_words, vals, 3); /* @@ -2039,53 +2148,46 @@ int __init ide_setup (char *s) #ifdef CONFIG_BLK_DEV_4DRIVES case -11: /* "four" drives on one set of ports */ { - ide_hwif_t *mate = &ide_hwifs[hw^1]; - mate->drives[0].select.all ^= 0x20; - mate->drives[1].select.all ^= 0x20; - hwif->chipset = mate->chipset = ide_4drives; - mate->irq = hwif->irq; - memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); - goto do_serialize; + hp->four; + hp->serialize; + goto done; } #endif /* CONFIG_BLK_DEV_4DRIVES */ case -10: /* minus10 */ case -9: /* minus9 */ goto bad_option; case -8: /* "biostimings" */ - hwif->drives[0].autotune = IDE_TUNE_BIOS; - hwif->drives[1].autotune = IDE_TUNE_BIOS; + hp->dp[0].autotune = IDE_TUNE_BIOS; + hp->dp[1].autotune = IDE_TUNE_BIOS; goto done; case -7: /* ata66 */ #ifdef CONFIG_BLK_DEV_IDEPCI - hwif->udma_four = 1; + hp->udma_four = 1; goto done; #else /* !CONFIG_BLK_DEV_IDEPCI */ - hwif->udma_four = 0; + hp->udma_four = 0; goto bad_hwif; #endif /* CONFIG_BLK_DEV_IDEPCI */ case -6: /* dma */ - hwif->autodma = 1; + hp->autodma = 1; goto done; case -5: /* "reset" */ - hwif->reset = 1; + hp->reset = 1; goto done; case -4: /* "noautotune" */ - hwif->drives[0].autotune = IDE_TUNE_NOAUTO; - hwif->drives[1].autotune = IDE_TUNE_NOAUTO; + hp->dp[0].autotune = IDE_TUNE_NOAUTO; + hp->dp[1].autotune = IDE_TUNE_NOAUTO; goto done; case -3: /* "autotune" */ - hwif->drives[0].autotune = IDE_TUNE_AUTO; - hwif->drives[1].autotune = IDE_TUNE_AUTO; + hp->dp[0].autotune = IDE_TUNE_AUTO; + hp->dp[1].autotune = IDE_TUNE_AUTO; goto done; case -2: /* "serialize" */ - do_serialize: - hwif->mate = &ide_hwifs[hw^1]; - hwif->mate->mate = hwif; - hwif->serialized = hwif->mate->serialized = 1; + hp->serialize = 1; goto done; - case -1: /* "noprobe" */ - hwif->noprobe = 1; + hp->noprobe = 1; + hp->noprobe_valid = 1; goto done; case 1: /* base */ @@ -2093,12 +2195,12 @@ int __init ide_setup (char *s) case 2: /* base,ctl */ vals[2] = 0; /* default irq = probe for it */ case 3: /* base,ctl,irq */ - hwif->hw.irq = vals[2]; - ide_init_hwif_ports(&hwif->hw, (unsigned long) vals[0], (unsigned long) vals[1], &hwif->irq); - memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports)); - hwif->irq = vals[2]; - hwif->noprobe = 0; - hwif->chipset = ide_generic; + hp->base = vals[0]; + hp->ctl = vals[1]; + hp->irq = vals[2]; + hp->noprobe = 0; + hp->noprobe_valid = 1; + hp->generic = 1; goto done; case 0: goto bad_option; @@ -2481,6 +2583,7 @@ struct bus_type ide_bus_type = { */ int __init ide_init (void) { + unsigned int i; static char banner_printed; if (!banner_printed) { printk(KERN_INFO "Uniform Multi-Platform E-IDE driver " REVISION "\n"); @@ -2493,6 +2596,9 @@ int __init ide_init (void) init_ide_data(); + for (i = 0; i < MAX_HWIFS; i++) + hwif_apply_params(&ide_hwifs[i], &hwifs_params[i]); + #ifdef CONFIG_BLK_DEV_PDC4030 if (probe_pdc4030) init_pdc4030();
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