diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 43 | ||||
| -rw-r--r-- | include/linux/libata.h | 5 |
2 files changed, 30 insertions, 18 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 1514cb5e35f7..a87748ba579c 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -65,8 +65,7 @@ static unsigned int ata_dev_init_params(struct ata_port *ap, struct ata_device *dev); static void ata_set_mode(struct ata_port *ap); static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev); -static unsigned int ata_dev_xfermask(struct ata_port *ap, - struct ata_device *dev); +static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev); static unsigned int ata_unique_id = 1; static struct workqueue_struct *ata_wq; @@ -1801,16 +1800,19 @@ static void ata_set_mode(struct ata_port *ap) /* step 1: calculate xfer_mask */ for (i = 0; i < ATA_MAX_DEVICES; i++) { struct ata_device *dev = &ap->device[i]; - unsigned int xfer_mask; + unsigned int pio_mask, dma_mask; if (!ata_dev_present(dev)) continue; - xfer_mask = ata_dev_xfermask(ap, dev); + ata_dev_xfermask(ap, dev); - dev->pio_mode = ata_xfer_mask2mode(xfer_mask & ATA_MASK_PIO); - dev->dma_mode = ata_xfer_mask2mode(xfer_mask & (ATA_MASK_MWDMA | - ATA_MASK_UDMA)); + /* TODO: let LLDD filter dev->*_mask here */ + + pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0); + dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask); + dev->pio_mode = ata_xfer_mask2mode(pio_mask); + dev->dma_mode = ata_xfer_mask2mode(dma_mask); } /* step 2: always set host PIO timings */ @@ -2653,18 +2655,15 @@ static int ata_dma_blacklisted(const struct ata_device *dev) * @ap: Port on which the device to compute xfermask for resides * @dev: Device to compute xfermask for * - * Compute supported xfermask of @dev. This function is - * responsible for applying all known limits including host - * controller limits, device blacklist, etc... + * Compute supported xfermask of @dev and store it in + * dev->*_mask. This function is responsible for applying all + * known limits including host controller limits, device + * blacklist, etc... * * LOCKING: * None. - * - * RETURNS: - * Computed xfermask. */ -static unsigned int ata_dev_xfermask(struct ata_port *ap, - struct ata_device *dev) +static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev) { unsigned long xfer_mask; int i; @@ -2677,6 +2676,8 @@ static unsigned int ata_dev_xfermask(struct ata_port *ap, struct ata_device *d = &ap->device[i]; if (!ata_dev_present(d)) continue; + xfer_mask &= ata_pack_xfermask(d->pio_mask, d->mwdma_mask, + d->udma_mask); xfer_mask &= ata_id_xfermask(d->id); if (ata_dma_blacklisted(d)) xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); @@ -2686,7 +2687,8 @@ static unsigned int ata_dev_xfermask(struct ata_port *ap, printk(KERN_WARNING "ata%u: dev %u is on DMA blacklist, " "disabling DMA\n", ap->id, dev->devno); - return xfer_mask; + ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask, + &dev->udma_mask); } /** @@ -4436,8 +4438,13 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host, INIT_WORK(&ap->port_task, NULL, NULL); INIT_LIST_HEAD(&ap->eh_done_q); - for (i = 0; i < ATA_MAX_DEVICES; i++) - ap->device[i].devno = i; + for (i = 0; i < ATA_MAX_DEVICES; i++) { + struct ata_device *dev = &ap->device[i]; + dev->devno = i; + dev->pio_mask = UINT_MAX; + dev->mwdma_mask = UINT_MAX; + dev->udma_mask = UINT_MAX; + } #ifdef ATA_IRQ_TRAP ap->stats.unhandled_irq = 1; diff --git a/include/linux/libata.h b/include/linux/libata.h index 7a54244d30aa..fbe8ba212598 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -358,6 +358,11 @@ struct ata_device { unsigned int max_sectors; /* per-device max sectors */ unsigned int cdb_len; + /* per-dev xfer mask */ + unsigned int pio_mask; + unsigned int mwdma_mask; + unsigned int udma_mask; + /* for CHS addressing */ u16 cylinders; /* Number of cylinders */ u16 heads; /* Number of heads */ |