From 4706a7e03a03d6d206a93a49a0c723dd612cf8e9 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Sun, 27 Apr 2008 15:38:30 +0200 Subject: ide: add "cdrom=" and "chs=" parameters * Add "cdrom=" and "chs=" parameters. * Obsolete "hdx=cdrom" and "hdx=cyls,heads,sects" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 66 insertions(+), 5 deletions(-) (limited to 'drivers/ide') diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index d8f40ee74ce..a4bceeecde7 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -924,7 +924,7 @@ static int __init ide_setup(char *s) drive->media = ide_cdrom; /* an ATAPI device ignores DRDY */ drive->ready_stat = 0; - goto done; + goto obsolete_option; case -5: /* nodma */ drive->nodma = 1; goto obsolete_option; @@ -948,7 +948,7 @@ static int __init ide_setup(char *s) drive->sect = drive->bios_sect = vals[2]; drive->present = 1; drive->forced_geom = 1; - goto done; + goto obsolete_option; default: goto bad_option; } @@ -975,9 +975,6 @@ bad_option: obsolete_option: printk(" -- OBSOLETE OPTION, WILL BE REMOVED SOON!\n"); return 1; -done: - printk("\n"); - return 1; } EXPORT_SYMBOL(ide_lock); @@ -1167,6 +1164,51 @@ static unsigned int ide_nowerr; module_param_call(nowerr, ide_set_dev_param_mask, NULL, &ide_nowerr, 0); MODULE_PARM_DESC(nowerr, "ignore the WRERR_STAT bit for a device"); +static unsigned int ide_cdroms; + +module_param_call(cdrom, ide_set_dev_param_mask, NULL, &ide_cdroms, 0); +MODULE_PARM_DESC(cdrom, "force device as a CD-ROM"); + +struct chs_geom { + unsigned int cyl; + u8 head; + u8 sect; +}; + +static unsigned int ide_disks; +static struct chs_geom ide_disks_chs[MAX_HWIFS * MAX_DRIVES]; + +static int ide_set_disk_chs(const char *str, struct kernel_param *kp) +{ + int a, b, c = 0, h = 0, s = 0, i, j = 1; + + if (sscanf(str, "%d.%d:%d,%d,%d", &a, &b, &c, &h, &s) != 5 && + sscanf(str, "%d.%d:%d", &a, &b, &j) != 3) + return -EINVAL; + + i = a * MAX_DRIVES + b; + + if (i >= MAX_HWIFS * MAX_DRIVES || j < 0 || j > 1) + return -EINVAL; + + if (c > INT_MAX || h > 255 || s > 255) + return -EINVAL; + + if (j) + ide_disks |= (1 << i); + else + ide_disks &= (1 << i); + + ide_disks_chs[i].cyl = c; + ide_disks_chs[i].head = h; + ide_disks_chs[i].sect = s; + + return 0; +} + +module_param_call(chs, ide_set_disk_chs, NULL, NULL, 0); +MODULE_PARM_DESC(chs, "force device as a disk (using CHS)"); + static void ide_dev_apply_params(ide_drive_t *drive) { int i = drive->hwif->index * MAX_DRIVES + drive->select.b.unit; @@ -1189,6 +1231,25 @@ static void ide_dev_apply_params(ide_drive_t *drive) drive->name); drive->bad_wstat = BAD_R_STAT; } + if (ide_cdroms & (1 << i)) { + printk(KERN_INFO "ide: forcing %s as a CD-ROM\n", drive->name); + drive->present = 1; + drive->media = ide_cdrom; + /* an ATAPI device ignores DRDY */ + drive->ready_stat = 0; + } + if (ide_disks & (1 << i)) { + drive->cyl = drive->bios_cyl = ide_disks_chs[i].cyl; + drive->head = drive->bios_head = ide_disks_chs[i].head; + drive->sect = drive->bios_sect = ide_disks_chs[i].sect; + drive->forced_geom = 1; + printk(KERN_INFO "ide: forcing %s as a disk (%d/%d/%d)\n", + drive->name, + drive->cyl, drive->head, drive->sect); + drive->present = 1; + drive->media = ide_disk; + drive->ready_stat = READY_STAT; + } } static unsigned int ide_ignore_cable; -- cgit v1.2.3