diff options
Diffstat (limited to 'drivers/ide/ide-xfer-mode.c')
| -rw-r--r-- | drivers/ide/ide-xfer-mode.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/ide/ide-xfer-mode.c b/drivers/ide/ide-xfer-mode.c index af44be9d546..eb421883c16 100644 --- a/drivers/ide/ide-xfer-mode.c +++ b/drivers/ide/ide-xfer-mode.c @@ -1,6 +1,7 @@ #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> +#include <linux/export.h> #include <linux/interrupt.h> #include <linux/ide.h> #include <linux/bitops.h> @@ -58,7 +59,7 @@ EXPORT_SYMBOL(ide_xfer_verbose); * This is used by most chipset support modules when "auto-tuning". */ -u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode) +static u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode) { u16 *id = drive->id; int pio_mode = -1, overridden = 0; @@ -105,7 +106,18 @@ u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode) return pio_mode; } -EXPORT_SYMBOL_GPL(ide_get_best_pio_mode); + +int ide_pio_need_iordy(ide_drive_t *drive, const u8 pio) +{ + /* + * IORDY may lead to controller lock up on certain controllers + * if the port is not occupied. + */ + if (pio == 0 && (drive->hwif->port_flags & IDE_PFLAG_PROBING)) + return 0; + return ata_id_pio_need_iordy(drive->id, pio); +} +EXPORT_SYMBOL_GPL(ide_pio_need_iordy); int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) { @@ -123,17 +135,20 @@ int ide_set_pio_mode(ide_drive_t *drive, const u8 mode) * set transfer mode on the device in ->set_pio_mode method... */ if (port_ops->set_dma_mode == NULL) { - port_ops->set_pio_mode(drive, mode - XFER_PIO_0); + drive->pio_mode = mode; + port_ops->set_pio_mode(hwif, drive); return 0; } if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { if (ide_config_drive_speed(drive, mode)) return -1; - port_ops->set_pio_mode(drive, mode - XFER_PIO_0); + drive->pio_mode = mode; + port_ops->set_pio_mode(hwif, drive); return 0; } else { - port_ops->set_pio_mode(drive, mode - XFER_PIO_0); + drive->pio_mode = mode; + port_ops->set_pio_mode(hwif, drive); return ide_config_drive_speed(drive, mode); } } @@ -152,10 +167,12 @@ int ide_set_dma_mode(ide_drive_t *drive, const u8 mode) if (hwif->host_flags & IDE_HFLAG_POST_SET_MODE) { if (ide_config_drive_speed(drive, mode)) return -1; - port_ops->set_dma_mode(drive, mode); + drive->dma_mode = mode; + port_ops->set_dma_mode(hwif, drive); return 0; } else { - port_ops->set_dma_mode(drive, mode); + drive->dma_mode = mode; + port_ops->set_dma_mode(hwif, drive); return ide_config_drive_speed(drive, mode); } } |