{ "_NEC DV5800A", NULL },
{ "SAMSUNG CD-ROM SN-124", "N001" },
{ "Seagate STT20000A", NULL },
+ { "CD-ROM CDR_U200", "1.09" },
{ NULL , NULL }
};
if (!dma_stat) {
struct request *rq = HWGROUP(drive)->rq;
- if (rq->rq_disk) {
- ide_driver_t *drv;
-
- drv = *(ide_driver_t **)rq->rq_disk->private_data;
- drv->end_request(drive, 1, rq->nr_sectors);
- } else
- ide_end_request(drive, 1, rq->nr_sectors);
+ task_end_request(drive, rq, stat);
return ide_stopped;
}
printk(KERN_ERR "%s: dma_intr: bad DMA status (dma_stat=%x)\n",
ide_hwif_t *hwif = drive->hwif;
struct hd_driveid *id = drive->id;
- /* consult the list of known "bad" drives */
- if (__ide_dma_bad_drive(drive))
- return -1;
+ if (drive->media != ide_disk) {
+ if (hwif->host_flags & IDE_HFLAG_NO_ATAPI_DMA)
+ return 0;
+ }
- if (drive->media != ide_disk && hwif->atapi_dma == 0)
- return -1;
+ /*
+ * Enable DMA on any drive that has
+ * UltraDMA (mode 0/1/2/3/4/5/6) enabled
+ */
+ if ((id->field_valid & 4) && ((id->dma_ultra >> 8) & 0x7f))
+ return 1;
- if ((id->capability & 1) && drive->autodma) {
- /*
- * Enable DMA on any drive that has
- * UltraDMA (mode 0/1/2/3/4/5/6) enabled
- */
- if ((id->field_valid & 4) && ((id->dma_ultra >> 8) & 0x7f))
- return 0;
- /*
- * Enable DMA on any drive that has mode2 DMA
- * (multi or single) enabled
- */
- if (id->field_valid & 2) /* regular DMA */
- if ((id->dma_mword & 0x404) == 0x404 ||
- (id->dma_1word & 0x404) == 0x404)
- return 0;
+ /*
+ * Enable DMA on any drive that has mode2 DMA
+ * (multi or single) enabled
+ */
+ if (id->field_valid & 2) /* regular DMA */
+ if ((id->dma_mword & 0x404) == 0x404 ||
+ (id->dma_1word & 0x404) == 0x404)
+ return 1;
- /* Consult the list of known "good" drives */
- if (ide_dma_good_drive(drive))
- return 0;
- }
+ /* Consult the list of known "good" drives */
+ if (ide_dma_good_drive(drive))
+ return 1;
- return -1;
+ return 0;
}
/**
}
/**
- * ide_dma_host_off - Generic DMA kill
+ * ide_dma_host_set - Enable/disable DMA on a host
* @drive: drive to control
*
- * Perform the generic IDE controller DMA off operation. This
- * works for most IDE bus mastering controllers
+ * Enable/disable DMA on an IDE controller following generic
+ * bus-mastering IDE controller behaviour.
*/
-void ide_dma_host_off(ide_drive_t *drive)
+void ide_dma_host_set(ide_drive_t *drive, int on)
{
ide_hwif_t *hwif = HWIF(drive);
u8 unit = (drive->select.b.unit & 0x01);
u8 dma_stat = hwif->INB(hwif->dma_status);
- hwif->OUTB((dma_stat & ~(1<<(5+unit))), hwif->dma_status);
+ if (on)
+ dma_stat |= (1 << (5 + unit));
+ else
+ dma_stat &= ~(1 << (5 + unit));
+
+ hwif->OUTB(dma_stat, hwif->dma_status);
}
-EXPORT_SYMBOL(ide_dma_host_off);
+EXPORT_SYMBOL_GPL(ide_dma_host_set);
+#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
/**
* ide_dma_off_quietly - Generic DMA kill
drive->using_dma = 0;
ide_toggle_bounce(drive, 0);
- drive->hwif->dma_host_off(drive);
+ drive->hwif->dma_host_set(drive, 0);
}
EXPORT_SYMBOL(ide_dma_off_quietly);
-#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
/**
* ide_dma_off - disable DMA on a device
void ide_dma_off(ide_drive_t *drive)
{
printk(KERN_INFO "%s: DMA disabled\n", drive->name);
- drive->hwif->dma_off_quietly(drive);
+ ide_dma_off_quietly(drive);
}
EXPORT_SYMBOL(ide_dma_off);
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
- * ide_dma_host_on - Enable DMA on a host
- * @drive: drive to enable for DMA
- *
- * Enable DMA on an IDE controller following generic bus mastering
- * IDE controller behaviour
- */
-
-void ide_dma_host_on(ide_drive_t *drive)
-{
- if (drive->using_dma) {
- ide_hwif_t *hwif = HWIF(drive);
- u8 unit = (drive->select.b.unit & 0x01);
- u8 dma_stat = hwif->INB(hwif->dma_status);
-
- hwif->OUTB((dma_stat|(1<<(5+unit))), hwif->dma_status);
- }
-}
-
-EXPORT_SYMBOL(ide_dma_host_on);
-
-/**
- * __ide_dma_on - Enable DMA on a device
+ * ide_dma_on - Enable DMA on a device
* @drive: drive to enable DMA on
*
* Enable IDE DMA for a device on this IDE controller.
*/
-
-int __ide_dma_on (ide_drive_t *drive)
-{
- /* consult the list of known "bad" drives */
- if (__ide_dma_bad_drive(drive))
- return 1;
+void ide_dma_on(ide_drive_t *drive)
+{
drive->using_dma = 1;
ide_toggle_bounce(drive, 1);
- drive->hwif->dma_host_on(drive);
-
- return 0;
+ drive->hwif->dma_host_set(drive, 1);
}
-EXPORT_SYMBOL(__ide_dma_on);
+EXPORT_SYMBOL(ide_dma_on);
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_dma_setup - begin a DMA phase
* @drive: target device
ide_hwif_t *hwif = HWIF(drive);
u8 dma_stat = hwif->INB(hwif->dma_status);
-#if 0 /* do not set unless you know what you are doing */
- if (dma_stat & 4) {
- u8 stat = hwif->INB(IDE_STATUS_REG);
- hwif->OUTB(hwif->dma_status, dma_stat & 0xE4);
- }
-#endif
/* return 1 if INTR asserted */
if ((dma_stat & 4) == 4)
return 1;
drive->name, __FUNCTION__);
return 0;
}
+#else
+static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
int __ide_dma_bad_drive (ide_drive_t *drive)
int x, i;
u8 mode = 0;
- if (drive->media != ide_disk && hwif->atapi_dma == 0)
- return 0;
+ if (drive->media != ide_disk) {
+ if (hwif->host_flags & IDE_HFLAG_NO_ATAPI_DMA)
+ return 0;
+ }
for (i = 0; i < ARRAY_SIZE(xfer_mode_bases); i++) {
if (req_mode < xfer_mode_bases[i])
mode = XFER_MW_DMA_1;
}
- printk(KERN_DEBUG "%s: selected mode 0x%x\n", drive->name, mode);
+ mode = min(mode, req_mode);
+
+ printk(KERN_INFO "%s: %s mode selected\n", drive->name,
+ mode ? ide_xfer_verbose(mode) : "no DMA");
- return min(mode, req_mode);
+ return mode;
}
EXPORT_SYMBOL_GPL(ide_find_dma_mode);
-int ide_tune_dma(ide_drive_t *drive)
+static int ide_tune_dma(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
u8 speed;
- if ((drive->id->capability & 1) == 0 || drive->autodma == 0)
+ if (noautodma || drive->nodma || (drive->id->capability & 1) == 0)
return 0;
/* consult the list of known "bad" drives */
if (__ide_dma_bad_drive(drive))
return 0;
+ if (ide_id_dma_bug(drive))
+ return 0;
+
+ if (hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
+ return config_drive_for_dma(drive);
+
speed = ide_max_dma_mode(drive);
- if (!speed)
- return 0;
+ if (!speed) {
+ /* is this really correct/needed? */
+ if ((hwif->host_flags & IDE_HFLAG_CY82C693) &&
+ ide_dma_good_drive(drive))
+ return 1;
+ else
+ return 0;
+ }
- if (drive->hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
+ if (hwif->host_flags & IDE_HFLAG_NO_SET_MODE)
return 0;
if (ide_set_dma_mode(drive, speed))
return 1;
}
-EXPORT_SYMBOL_GPL(ide_tune_dma);
+static int ide_dma_check(ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ int vdma = (hwif->host_flags & IDE_HFLAG_VDMA)? 1 : 0;
+
+ if (!vdma && ide_tune_dma(drive))
+ return 0;
+
+ /* TODO: always do PIO fallback */
+ if (hwif->host_flags & IDE_HFLAG_TRUST_BIOS_FOR_DMA)
+ return -1;
-void ide_dma_verbose(ide_drive_t *drive)
+ ide_set_max_pio(drive);
+
+ return vdma ? 0 : -1;
+}
+
+int ide_id_dma_bug(ide_drive_t *drive)
{
- struct hd_driveid *id = drive->id;
- ide_hwif_t *hwif = HWIF(drive);
+ struct hd_driveid *id = drive->id;
if (id->field_valid & 4) {
if ((id->dma_ultra >> 8) && (id->dma_mword >> 8))
- goto bug_dma_off;
- if (id->dma_ultra & ((id->dma_ultra >> 8) & hwif->ultra_mask)) {
- if (((id->dma_ultra >> 11) & 0x1F) &&
- eighty_ninty_three(drive)) {
- if ((id->dma_ultra >> 15) & 1) {
- printk(", UDMA(mode 7)");
- } else if ((id->dma_ultra >> 14) & 1) {
- printk(", UDMA(133)");
- } else if ((id->dma_ultra >> 13) & 1) {
- printk(", UDMA(100)");
- } else if ((id->dma_ultra >> 12) & 1) {
- printk(", UDMA(66)");
- } else if ((id->dma_ultra >> 11) & 1) {
- printk(", UDMA(44)");
- } else
- goto mode_two;
- } else {
- mode_two:
- if ((id->dma_ultra >> 10) & 1) {
- printk(", UDMA(33)");
- } else if ((id->dma_ultra >> 9) & 1) {
- printk(", UDMA(25)");
- } else if ((id->dma_ultra >> 8) & 1) {
- printk(", UDMA(16)");
- }
- }
- } else {
- printk(", (U)DMA"); /* Can be BIOS-enabled! */
- }
+ goto err_out;
} else if (id->field_valid & 2) {
if ((id->dma_mword >> 8) && (id->dma_1word >> 8))
- goto bug_dma_off;
- printk(", DMA");
- } else if (id->field_valid & 1) {
- goto bug_dma_off;
+ goto err_out;
}
- return;
-bug_dma_off:
- printk(", BUG DMA OFF");
- hwif->dma_off_quietly(drive);
- return;
+ return 0;
+err_out:
+ printk(KERN_ERR "%s: bad DMA info in identify block\n", drive->name);
+ return 1;
}
-EXPORT_SYMBOL(ide_dma_verbose);
-
int ide_set_dma(ide_drive_t *drive)
{
- ide_hwif_t *hwif = drive->hwif;
int rc;
- rc = hwif->ide_dma_check(drive);
+ /*
+ * Force DMAing for the beginning of the check.
+ * Some chipsets appear to do interesting
+ * things, if not checked and cleared.
+ * PARANOIA!!!
+ */
+ ide_dma_off_quietly(drive);
- switch(rc) {
- case -1: /* DMA needs to be disabled */
- hwif->dma_off_quietly(drive);
- return -1;
- case 0: /* DMA needs to be enabled */
- return hwif->ide_dma_on(drive);
- case 1: /* DMA setting cannot be changed */
- break;
- default:
- BUG();
- break;
- }
+ rc = ide_dma_check(drive);
+ if (rc)
+ return rc;
+
+ ide_dma_on(drive);
- return rc;
+ return 0;
}
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
EXPORT_SYMBOL(ide_dma_timeout);
-/*
- * Needed for allowing full modular support of ide-driver
- */
-static int ide_release_dma_engine(ide_hwif_t *hwif)
+static void ide_release_dma_engine(ide_hwif_t *hwif)
{
if (hwif->dmatable_cpu) {
pci_free_consistent(hwif->pci_dev,
hwif->dmatable_dma);
hwif->dmatable_cpu = NULL;
}
- return 1;
}
static int ide_release_iomio_dma(ide_hwif_t *hwif)
{
printk(KERN_INFO " %s: MMIO-DMA ", hwif->name);
- hwif->dma_base = base;
-
- if(hwif->mate)
- hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base;
- else
- hwif->dma_master = base;
return 0;
}
return 1;
}
- hwif->dma_base = base;
-
if (hwif->cds->extra) {
hwif->extra_base = base + (hwif->channel ? 8 : 16);
}
}
- if(hwif->mate)
- hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base:base;
- else
- hwif->dma_master = base;
return 0;
}
return ide_iomio_dma(hwif, base, ports);
}
-/*
- * This can be called for a dynamically installed interface. Don't __init it
- */
-void ide_setup_dma (ide_hwif_t *hwif, unsigned long dma_base, unsigned int num_ports)
+void ide_setup_dma(ide_hwif_t *hwif, unsigned long base, unsigned num_ports)
{
- if (ide_dma_iobase(hwif, dma_base, num_ports))
+ if (ide_dma_iobase(hwif, base, num_ports))
return;
if (ide_allocate_dma_engine(hwif)) {
return;
}
+ hwif->dma_base = base;
+
if (!(hwif->dma_command))
hwif->dma_command = hwif->dma_base;
if (!(hwif->dma_vendor1))
if (!(hwif->dma_prdtable))
hwif->dma_prdtable = (hwif->dma_base + 4);
- if (!hwif->dma_off_quietly)
- hwif->dma_off_quietly = &ide_dma_off_quietly;
- if (!hwif->dma_host_off)
- hwif->dma_host_off = &ide_dma_host_off;
- if (!hwif->ide_dma_on)
- hwif->ide_dma_on = &__ide_dma_on;
- if (!hwif->dma_host_on)
- hwif->dma_host_on = &ide_dma_host_on;
- if (!hwif->ide_dma_check)
- hwif->ide_dma_check = &config_drive_for_dma;
+ if (!hwif->dma_host_set)
+ hwif->dma_host_set = &ide_dma_host_set;
if (!hwif->dma_setup)
hwif->dma_setup = &ide_dma_setup;
if (!hwif->dma_exec_cmd)
hwif->drives[1].name, (dma_stat & 0x40) ? "DMA" : "pio");
}
printk("\n");
-
- BUG_ON(!hwif->dma_master);
}
EXPORT_SYMBOL_GPL(ide_setup_dma);
git.openpandora.org / pandora-kernel.git / blobdiff