diff options
Diffstat (limited to 'drivers/ata/ide-sff.c')
| -rw-r--r-- | drivers/ata/ide-sff.c | 54 |
1 files changed, 43 insertions, 11 deletions
diff --git a/drivers/ata/ide-sff.c b/drivers/ata/ide-sff.c index 6dc89d79a5..b7c8847266 100644 --- a/drivers/ata/ide-sff.c +++ b/drivers/ata/ide-sff.c @@ -136,17 +136,33 @@ static int ata_wait_ready(struct ide_port *ide, unsigned timeout) * @param io Register file * @param drive 0 master drive, 1 slave drive * @param num Sector number - * - * @todo LBA48 support */ -static int ata_set_lba_sector(struct ide_port *ide, unsigned drive, uint64_t num) +static int ata_set_lba_sector(struct ata_port *port, unsigned drive, + uint64_t num) { - if (num > 0x0FFFFFFF || drive > 1) + struct ide_port *ide = to_ata_drive_access(port); + + if (drive > 1) return -EINVAL; - ata_wr_byte(ide, 0xA0 | LBA_FLAG | drive << 4 | num >> 24, - ide->io.device_addr); - ata_wr_byte(ide, 0x00, ide->io.error_addr); + if (port->lba48) { + if (num > (1ULL << 48) - 1) + return -EINVAL; + + ata_wr_byte(ide, LBA_FLAG | drive << 4, ide->io.device_addr); + + ata_wr_byte(ide, 0x00, ide->io.nsect_addr); + ata_wr_byte(ide, num >> 24, ide->io.lbal_addr); + ata_wr_byte(ide, num >> 32, ide->io.lbam_addr); + ata_wr_byte(ide, num >> 40, ide->io.lbah_addr); + } else { + if (num > (1ULL << 28) - 1) + return -EINVAL; + + ata_wr_byte(ide, 0xA0 | LBA_FLAG | drive << 4 | num >> 24, + ide->io.device_addr); + } + ata_wr_byte(ide, 0x01, ide->io.nsect_addr); ata_wr_byte(ide, num, ide->io.lbal_addr); /* 0 ... 7 */ ata_wr_byte(ide, num >> 8, ide->io.lbam_addr); /* 8 ... 15 */ @@ -316,10 +332,18 @@ static int ide_read(struct ata_port *port, void *buffer, unsigned int block, struct ide_port *ide = to_ata_drive_access(port); while (num_blocks) { - rc = ata_set_lba_sector(ide, DISK_MASTER, sector); + uint8_t cmd; + + rc = ata_set_lba_sector(port, DISK_MASTER, sector); if (rc != 0) return rc; - rc = ata_wr_cmd(ide, ATA_CMD_READ); + + if (port->lba48) + cmd = ATA_CMD_PIO_READ_EXT; + else + cmd = ATA_CMD_READ; + + rc = ata_wr_cmd(ide, cmd); if (rc != 0) return rc; rc = ata_wait_ready(ide, MAX_TIMEOUT); @@ -355,10 +379,18 @@ static int __maybe_unused ide_write(struct ata_port *port, struct ide_port *ide = to_ata_drive_access(port); while (num_blocks) { - rc = ata_set_lba_sector(ide, DISK_MASTER, sector); + uint8_t cmd; + + rc = ata_set_lba_sector(port, DISK_MASTER, sector); if (rc != 0) return rc; - rc = ata_wr_cmd(ide, ATA_CMD_WRITE); + + if (port->lba48) + cmd = ATA_CMD_PIO_WRITE_EXT; + else + cmd = ATA_CMD_WRITE; + + rc = ata_wr_cmd(ide, cmd); if (rc != 0) return rc; rc = ata_wait_ready(ide, MAX_TIMEOUT); |