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ide-tape: merge callbacks
The appropriate functionality of the callback is established through querying the ATAPI packet command in pc->c[0]. While at it: - add uptodate variable + leave just one idetape_end_request() call - don't use HWGROUP() macro Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
parent
258ec41130
commit
5985e6abbd
@ -503,18 +503,6 @@ static struct request *idetape_next_rq_storage(ide_drive_t *drive)
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return (&tape->rq_stack[tape->rq_stack_index++]);
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}
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static void idetape_init_pc(struct ide_atapi_pc *pc)
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{
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memset(pc->c, 0, 12);
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pc->retries = 0;
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pc->flags = 0;
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pc->req_xfer = 0;
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pc->buf = pc->pc_buf;
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pc->buf_size = IDETAPE_PC_BUFFER_SIZE;
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pc->bh = NULL;
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pc->b_data = NULL;
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}
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/*
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* called on each failed packet command retry to analyze the request sense. We
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* currently do not utilize this information.
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@ -631,30 +619,85 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
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return 0;
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}
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static ide_startstop_t idetape_request_sense_callback(ide_drive_t *drive)
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static ide_startstop_t ide_tape_callback(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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struct ide_atapi_pc *pc = tape->pc;
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int uptodate = pc->error ? 0 : 1;
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debug_log(DBG_PROCS, "Enter %s\n", __func__);
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if (!tape->pc->error) {
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idetape_analyze_error(drive, tape->pc->buf);
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idetape_end_request(drive, 1, 0);
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} else {
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printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - "
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"Aborting request!\n");
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idetape_end_request(drive, 0, 0);
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if (pc->c[0] == REQUEST_SENSE) {
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if (uptodate)
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idetape_analyze_error(drive, pc->buf);
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else
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printk(KERN_ERR "ide-tape: Error in REQUEST SENSE "
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"itself - Aborting request!\n");
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} else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {
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struct request *rq = drive->hwif->hwgroup->rq;
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int blocks = pc->xferred / tape->blk_size;
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tape->avg_size += blocks * tape->blk_size;
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if (time_after_eq(jiffies, tape->avg_time + HZ)) {
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tape->avg_speed = tape->avg_size * HZ /
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(jiffies - tape->avg_time) / 1024;
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tape->avg_size = 0;
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tape->avg_time = jiffies;
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}
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tape->first_frame += blocks;
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rq->current_nr_sectors -= blocks;
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if (pc->error)
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uptodate = pc->error;
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} else if (pc->c[0] == READ_POSITION && uptodate) {
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u8 *readpos = tape->pc->buf;
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debug_log(DBG_SENSE, "BOP - %s\n",
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(readpos[0] & 0x80) ? "Yes" : "No");
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debug_log(DBG_SENSE, "EOP - %s\n",
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(readpos[0] & 0x40) ? "Yes" : "No");
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if (readpos[0] & 0x4) {
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printk(KERN_INFO "ide-tape: Block location is unknown"
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"to the tape\n");
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clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
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uptodate = 0;
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} else {
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debug_log(DBG_SENSE, "Block Location - %u\n",
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be32_to_cpu(*(u32 *)&readpos[4]));
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tape->partition = readpos[1];
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tape->first_frame = be32_to_cpu(*(u32 *)&readpos[4]);
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set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
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}
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}
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idetape_end_request(drive, uptodate, 0);
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return ide_stopped;
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}
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static void idetape_init_pc(struct ide_atapi_pc *pc)
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{
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memset(pc->c, 0, 12);
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pc->retries = 0;
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pc->flags = 0;
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pc->req_xfer = 0;
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pc->buf = pc->pc_buf;
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pc->buf_size = IDETAPE_PC_BUFFER_SIZE;
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pc->bh = NULL;
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pc->b_data = NULL;
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pc->idetape_callback = ide_tape_callback;
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}
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static void idetape_create_request_sense_cmd(struct ide_atapi_pc *pc)
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{
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idetape_init_pc(pc);
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pc->c[0] = REQUEST_SENSE;
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pc->c[4] = 20;
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pc->req_xfer = 20;
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pc->idetape_callback = &idetape_request_sense_callback;
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}
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static void idetape_init_rq(struct request *rq, u8 cmd)
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@ -1025,16 +1068,6 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
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}
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}
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static ide_startstop_t idetape_pc_callback(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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debug_log(DBG_PROCS, "Enter %s\n", __func__);
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idetape_end_request(drive, tape->pc->error ? 0 : 1, 0);
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return ide_stopped;
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}
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/* A mode sense command is used to "sense" tape parameters. */
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static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
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{
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@ -1060,7 +1093,6 @@ static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
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pc->req_xfer = 24;
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else
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pc->req_xfer = 50;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
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@ -1091,32 +1123,6 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
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return pc->idetape_callback(drive);
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}
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static ide_startstop_t idetape_rw_callback(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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struct request *rq = HWGROUP(drive)->rq;
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int blocks = tape->pc->xferred / tape->blk_size;
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tape->avg_size += blocks * tape->blk_size;
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if (time_after_eq(jiffies, tape->avg_time + HZ)) {
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tape->avg_speed = tape->avg_size * HZ /
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(jiffies - tape->avg_time) / 1024;
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tape->avg_size = 0;
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tape->avg_time = jiffies;
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}
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debug_log(DBG_PROCS, "Enter %s\n", __func__);
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tape->first_frame += blocks;
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rq->current_nr_sectors -= blocks;
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if (!tape->pc->error)
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idetape_end_request(drive, 1, 0);
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else
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idetape_end_request(drive, tape->pc->error, 0);
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return ide_stopped;
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}
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static void idetape_create_read_cmd(idetape_tape_t *tape,
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struct ide_atapi_pc *pc,
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unsigned int length, struct idetape_bh *bh)
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@ -1125,7 +1131,6 @@ static void idetape_create_read_cmd(idetape_tape_t *tape,
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pc->c[0] = READ_6;
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put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
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pc->c[1] = 1;
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pc->idetape_callback = &idetape_rw_callback;
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pc->bh = bh;
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atomic_set(&bh->b_count, 0);
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pc->buf = NULL;
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@ -1143,7 +1148,6 @@ static void idetape_create_write_cmd(idetape_tape_t *tape,
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pc->c[0] = WRITE_6;
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put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
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pc->c[1] = 1;
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pc->idetape_callback = &idetape_rw_callback;
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pc->flags |= PC_FLAG_WRITING;
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pc->bh = bh;
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pc->b_data = bh->b_data;
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@ -1412,40 +1416,6 @@ static void idetape_init_merge_buffer(idetape_tape_t *tape)
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}
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}
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static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
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{
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idetape_tape_t *tape = drive->driver_data;
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u8 *readpos = tape->pc->buf;
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debug_log(DBG_PROCS, "Enter %s\n", __func__);
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if (!tape->pc->error) {
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debug_log(DBG_SENSE, "BOP - %s\n",
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(readpos[0] & 0x80) ? "Yes" : "No");
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debug_log(DBG_SENSE, "EOP - %s\n",
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(readpos[0] & 0x40) ? "Yes" : "No");
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if (readpos[0] & 0x4) {
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printk(KERN_INFO "ide-tape: Block location is unknown"
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"to the tape\n");
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clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
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idetape_end_request(drive, 0, 0);
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} else {
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debug_log(DBG_SENSE, "Block Location - %u\n",
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be32_to_cpu(*(u32 *)&readpos[4]));
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tape->partition = readpos[1];
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tape->first_frame =
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be32_to_cpu(*(u32 *)&readpos[4]);
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set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
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idetape_end_request(drive, 1, 0);
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}
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} else {
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idetape_end_request(drive, 0, 0);
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}
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return ide_stopped;
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}
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/*
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* Write a filemark if write_filemark=1. Flush the device buffers without
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* writing a filemark otherwise.
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@ -1457,14 +1427,12 @@ static void idetape_create_write_filemark_cmd(ide_drive_t *drive,
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pc->c[0] = WRITE_FILEMARKS;
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pc->c[4] = write_filemark;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static void idetape_create_test_unit_ready_cmd(struct ide_atapi_pc *pc)
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{
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idetape_init_pc(pc);
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pc->c[0] = TEST_UNIT_READY;
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pc->idetape_callback = &idetape_pc_callback;
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}
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/*
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@ -1502,7 +1470,6 @@ static void idetape_create_load_unload_cmd(ide_drive_t *drive,
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pc->c[0] = START_STOP;
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pc->c[4] = cmd;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout)
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@ -1554,7 +1521,6 @@ static void idetape_create_read_position_cmd(struct ide_atapi_pc *pc)
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idetape_init_pc(pc);
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pc->c[0] = READ_POSITION;
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pc->req_xfer = 20;
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pc->idetape_callback = &idetape_read_position_callback;
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}
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static int idetape_read_position(ide_drive_t *drive)
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@ -1582,7 +1548,6 @@ static void idetape_create_locate_cmd(ide_drive_t *drive,
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put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]);
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pc->c[8] = partition;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static int idetape_create_prevent_cmd(ide_drive_t *drive,
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@ -1597,7 +1562,6 @@ static int idetape_create_prevent_cmd(ide_drive_t *drive,
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idetape_init_pc(pc);
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pc->c[0] = ALLOW_MEDIUM_REMOVAL;
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pc->c[4] = prevent;
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pc->idetape_callback = &idetape_pc_callback;
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return 1;
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}
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@ -1704,7 +1668,6 @@ static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc)
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pc->c[0] = INQUIRY;
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pc->c[4] = 254;
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pc->req_xfer = 254;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static void idetape_create_rewind_cmd(ide_drive_t *drive,
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@ -1713,7 +1676,6 @@ static void idetape_create_rewind_cmd(ide_drive_t *drive,
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idetape_init_pc(pc);
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pc->c[0] = REZERO_UNIT;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static void idetape_create_erase_cmd(struct ide_atapi_pc *pc)
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@ -1722,7 +1684,6 @@ static void idetape_create_erase_cmd(struct ide_atapi_pc *pc)
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pc->c[0] = ERASE;
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pc->c[1] = 1;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd)
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@ -1732,7 +1693,6 @@ static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd)
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put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]);
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pc->c[1] = cmd;
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pc->flags |= PC_FLAG_WAIT_FOR_DSC;
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pc->idetape_callback = &idetape_pc_callback;
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}
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/* Queue up a character device originated write request. */
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