diff options
Diffstat (limited to 'linux/src/drivers/block/ide.c')
| -rw-r--r-- | linux/src/drivers/block/ide.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/linux/src/drivers/block/ide.c b/linux/src/drivers/block/ide.c index 7ab790d4..41a26017 100644 --- a/linux/src/drivers/block/ide.c +++ b/linux/src/drivers/block/ide.c @@ -302,6 +302,8 @@ #include <linux/genhd.h> #include <linux/malloc.h> +#include <ahci.h> + #include <asm/byteorder.h> #include <asm/irq.h> #include <asm/segment.h> @@ -1925,6 +1927,7 @@ void ide_init_drive_cmd (struct request *rq) rq->rq_status = RQ_ACTIVE; rq->rq_dev = ????; #endif + rq->quiet = 0; } /* @@ -2523,7 +2526,7 @@ static inline void do_identify (ide_drive_t *drive, byte cmd) drive->media = ide_tape; drive->present = 1; drive->removable = 1; - if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) { + if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL && !drive->nodma) { if (!HWIF(drive)->dmaproc(ide_dma_check, drive)) printk(", DMA"); } @@ -2650,7 +2653,7 @@ static inline void do_identify (ide_drive_t *drive, byte cmd) if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect)) drive->special.b.set_multmode = 1; } - if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) { + if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL && !drive->nodma) { if (!(HWIF(drive)->dmaproc(ide_dma_check, drive))) { if ((id->field_valid & 4) && (id->dma_ultra & (id->dma_ultra >> 8) & 7)) printk(", UDMA"); @@ -3105,6 +3108,7 @@ static int match_parm (char *s, const char *keywords[], int vals[], int max_vals * Not fully supported by all chipset types, * and quite likely to cause trouble with * older/odd IDE drives. + * "hdx=nodma" : disallow DMA for the drive * * "idebus=xx" : inform IDE driver of VESA/PCI bus speed in Mhz, * where "xx" is between 20 and 66 inclusive, @@ -3149,7 +3153,11 @@ void ide_setup (char *s) ide_hwif_t *hwif; ide_drive_t *drive; unsigned int hw, unit; +#ifdef MACH + const char max_drive = '0' + ((MAX_HWIFS * MAX_DRIVES) - 1); +#else const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1); +#endif const char max_hwif = '0' + (MAX_HWIFS - 1); printk("ide_setup: %s", s); @@ -3158,11 +3166,19 @@ void ide_setup (char *s) /* * Look for drive options: "hdx=" */ +#ifdef MACH + if (s[0] == 'h' && s[1] == 'd' && s[2] >= '0' && s[2] <= max_drive) { +#else if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) { +#endif const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom", "serialize", "autotune", "noautotune", - "slow", "ide-scsi", NULL}; + "slow", "ide-scsi", "nodma", NULL}; +#ifdef MACH + unit = s[2] - '0'; +#else unit = s[2] - 'a'; +#endif hw = unit / MAX_DRIVES; unit = unit % MAX_DRIVES; hwif = &ide_hwifs[hw]; @@ -3197,6 +3213,9 @@ void ide_setup (char *s) case -9: /* "ide-scsi" */ drive->ide_scsi = 1; goto done; + case -10: /* "nodma" */ + drive->nodma = 1; + goto done; case 3: /* cyl,head,sect */ drive->media = ide_disk; drive->cyl = drive->bios_cyl = vals[0]; @@ -3682,6 +3701,7 @@ static void probe_for_hwifs (void) #ifdef CONFIG_BLK_DEV_PROMISE init_dc4030(); #endif + ahci_probe_pci(); } static int hwif_init (int h) |