diff options
Diffstat (limited to 'drivers/ide/ide-tape.c')
| -rw-r--r-- | drivers/ide/ide-tape.c | 50 |
1 files changed, 18 insertions, 32 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 64d46fef2602..3c516ff1adf0 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -571,24 +571,6 @@ struct idetape_id_gcw { unsigned protocol :2; /* Protocol type */ }; -/* - * READ POSITION packet command - Data Format (From Table 6-57) - */ -typedef struct { - unsigned reserved0_10 :2; /* Reserved */ - unsigned bpu :1; /* Block Position Unknown */ - unsigned reserved0_543 :3; /* Reserved */ - unsigned eop :1; /* End Of Partition */ - unsigned bop :1; /* Beginning Of Partition */ - u8 partition; /* Partition Number */ - u8 reserved2, reserved3; /* Reserved */ - u32 first_block; /* First Block Location */ - u32 last_block; /* Last Block Location (Optional) */ - u8 reserved12; /* Reserved */ - u8 blocks_in_buffer[3]; /* Blocks In Buffer - (Optional) */ - u32 bytes_in_buffer; /* Bytes In Buffer (Optional) */ -} idetape_read_position_result_t; - /* Structures related to the SELECT SENSE / MODE SENSE packet commands. */ #define IDETAPE_BLOCK_DESCRIPTOR 0 #define IDETAPE_CAPABILITIES_PAGE 0x2a @@ -2000,30 +1982,34 @@ static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq) spin_lock_irq(&tape->spinlock); } -static ide_startstop_t idetape_read_position_callback (ide_drive_t *drive) +static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; - idetape_read_position_result_t *result; + u8 *readpos = tape->pc->buffer; debug_log(DBG_PROCS, "Enter %s\n", __func__); if (!tape->pc->error) { - result = (idetape_read_position_result_t *) tape->pc->buffer; - debug_log(DBG_SENSE, "BOP - %s\n", result->bop ? "Yes" : "No"); - debug_log(DBG_SENSE, "EOP - %s\n", result->eop ? "Yes" : "No"); - - if (result->bpu) { - printk(KERN_INFO "ide-tape: Block location is unknown to the tape\n"); + debug_log(DBG_SENSE, "BOP - %s\n", + (readpos[0] & 0x80) ? "Yes" : "No"); + debug_log(DBG_SENSE, "EOP - %s\n", + (readpos[0] & 0x40) ? "Yes" : "No"); + + if (readpos[0] & 0x4) { + printk(KERN_INFO "ide-tape: Block location is unknown" + "to the tape\n"); clear_bit(IDETAPE_ADDRESS_VALID, &tape->flags); idetape_end_request(drive, 0, 0); } else { debug_log(DBG_SENSE, "Block Location - %u\n", - ntohl(result->first_block)); - - tape->partition = result->partition; - tape->first_frame_position = ntohl(result->first_block); - tape->last_frame_position = ntohl(result->last_block); - tape->blocks_in_buffer = result->blocks_in_buffer[2]; + be32_to_cpu(*(u32 *)&readpos[4])); + + tape->partition = readpos[1]; + tape->first_frame_position = + be32_to_cpu(*(u32 *)&readpos[4]); + tape->last_frame_position = + be32_to_cpu(*(u32 *)&readpos[8]); + tape->blocks_in_buffer = readpos[15]; set_bit(IDETAPE_ADDRESS_VALID, &tape->flags); idetape_end_request(drive, 1, 0); } |