diff options
Diffstat (limited to 'drivers/scsi/mpi3mr')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_os.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 21e2ac40e6d6..8d895e4a219f 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -2051,6 +2051,46 @@ static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc, } /** + * mpi3mr_bios_param - BIOS param callback + * @sdev: SCSI device reference + * @bdev: Block device reference + * @capacity: Capacity in logical sectors + * @params: Parameter array + * + * Just the parameters with heads/secots/cylinders. + * + * Return: 0 always + */ +static int mpi3mr_bios_param(struct scsi_device *sdev, + struct block_device *bdev, sector_t capacity, int params[]) +{ + int heads; + int sectors; + sector_t cylinders; + ulong dummy; + + heads = 64; + sectors = 32; + + dummy = heads * sectors; + cylinders = capacity; + sector_div(cylinders, dummy); + + if ((ulong)capacity >= 0x200000) { + heads = 255; + sectors = 63; + dummy = heads * sectors; + cylinders = capacity; + sector_div(cylinders, dummy); + } + + params[0] = heads; + params[1] = sectors; + params[2] = cylinders; + return 0; +} + +/** * mpi3mr_map_queues - Map queues callback handler * @shost: SCSI host reference * @@ -2493,6 +2533,7 @@ static struct scsi_host_template mpi3mr_driver_template = { .slave_destroy = mpi3mr_slave_destroy, .scan_finished = mpi3mr_scan_finished, .scan_start = mpi3mr_scan_start, + .bios_param = mpi3mr_bios_param, .map_queues = mpi3mr_map_queues, .no_write_same = 1, .can_queue = 1, |