diff options
Diffstat (limited to 'drivers/ide/ide-tape.c')
| -rw-r--r-- | drivers/ide/ide-tape.c | 1196 |
1 files changed, 340 insertions, 856 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 1e1f26331a2..25ac60f5327 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -15,6 +15,8 @@ * Documentation/ide/ChangeLog.ide-tape.1995-2002 */ +#define DRV_NAME "ide-tape" + #define IDETAPE_VERSION "1.20" #include <linux/module.h> @@ -54,8 +56,6 @@ enum { DBG_CHRDEV = (1 << 2), /* all remaining procedures */ DBG_PROCS = (1 << 3), - /* buffer alloc info (pc_stack & rq_stack) */ - DBG_PCRQ_STACK = (1 << 4), }; /* define to see debug info */ @@ -81,26 +81,6 @@ enum { #define IDETAPE_MAX_PC_RETRIES 3 /* - * With each packet command, we allocate a buffer of IDETAPE_PC_BUFFER_SIZE - * bytes. This is used for several packet commands (Not for READ/WRITE commands) - */ -#define IDETAPE_PC_BUFFER_SIZE 256 - -/* - * In various places in the driver, we need to allocate storage - * for packet commands and requests, which will remain valid while - * we leave the driver to wait for an interrupt or a timeout event. - */ -#define IDETAPE_PC_STACK (10 + IDETAPE_MAX_PC_RETRIES) - -/* - * Some drives (for example, Seagate STT3401A Travan) require a very long - * timeout, because they don't return an interrupt or clear their busy bit - * until after the command completes (even retension commands). - */ -#define IDETAPE_WAIT_CMD (900*HZ) - -/* * The following parameter is used to select the point in the internal tape fifo * in which we will start to refill the buffer. Decreasing the following * parameter will improve the system's latency and interactive response, while @@ -144,9 +124,6 @@ enum { /*************************** End of tunable parameters ***********************/ -/* Read/Write error simulation */ -#define SIMULATE_ERRORS 0 - /* tape directions */ enum { IDETAPE_DIR_NONE = (1 << 0), @@ -175,20 +152,6 @@ struct idetape_bh { #define IDETAPE_LU_RETENSION_MASK 2 #define IDETAPE_LU_EOT_MASK 4 -/* - * Special requests for our block device strategy routine. - * - * In order to service a character device command, we add special requests to - * the tail of our block device request queue and wait for their completion. - */ - -enum { - REQ_IDETAPE_PC1 = (1 << 0), /* packet command (first stage) */ - REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */ - REQ_IDETAPE_READ = (1 << 2), - REQ_IDETAPE_WRITE = (1 << 3), -}; - /* Error codes returned in rq->errors to the higher part of the driver. */ #define IDETAPE_ERROR_GENERAL 101 #define IDETAPE_ERROR_FILEMARK 102 @@ -198,23 +161,6 @@ enum { #define IDETAPE_BLOCK_DESCRIPTOR 0 #define IDETAPE_CAPABILITIES_PAGE 0x2a -/* Tape flag bits values. */ -enum { - IDETAPE_FLAG_IGNORE_DSC = (1 << 0), - /* 0 When the tape position is unknown */ - IDETAPE_FLAG_ADDRESS_VALID = (1 << 1), - /* Device already opened */ - IDETAPE_FLAG_BUSY = (1 << 2), - /* Attempt to auto-detect the current user block size */ - IDETAPE_FLAG_DETECT_BS = (1 << 3), - /* Currently on a filemark */ - IDETAPE_FLAG_FILEMARK = (1 << 4), - /* DRQ interrupt device */ - IDETAPE_FLAG_DRQ_INTERRUPT = (1 << 5), - /* 0 = no tape is loaded, so we don't rewind after ejecting */ - IDETAPE_FLAG_MEDIUM_PRESENT = (1 << 6), -}; - /* * Most of our global data which we need to save even as we leave the driver due * to an interrupt or a timer event is stored in the struct defined below. @@ -226,31 +172,15 @@ typedef struct ide_tape_obj { struct kref kref; /* - * Since a typical character device operation requires more - * than one packet command, we provide here enough memory - * for the maximum of interconnected packet commands. - * The packet commands are stored in the circular array pc_stack. - * pc_stack_index points to the last used entry, and warps around - * to the start when we get to the last array entry. - * - * pc points to the current processed packet command. - * * failed_pc points to the last failed packet command, or contains * NULL if we do not need to retry any packet command. This is * required since an additional packet command is needed before the * retry, to get detailed information on what went wrong. */ - /* Current packet command */ - struct ide_atapi_pc *pc; /* Last failed packet command */ struct ide_atapi_pc *failed_pc; - /* Packet command stack */ - struct ide_atapi_pc pc_stack[IDETAPE_PC_STACK]; - /* Next free packet command storage space */ - int pc_stack_index; - struct request rq_stack[IDETAPE_PC_STACK]; - /* We implement a circular array */ - int rq_stack_index; + /* used by REQ_IDETAPE_{READ,WRITE} requests */ + struct ide_atapi_pc queued_pc; /* * DSC polling variables. @@ -315,8 +245,6 @@ typedef struct ide_tape_obj { /* Wasted space in each stage */ int excess_bh_size; - /* Status/Action flags: long for set_bit */ - unsigned long flags; /* protects the ide-tape queue */ spinlock_t lock; @@ -339,29 +267,31 @@ static DEFINE_MUTEX(idetape_ref_mutex); static struct class *idetape_sysfs_class; -#define to_ide_tape(obj) container_of(obj, struct ide_tape_obj, kref) - -#define ide_tape_g(disk) \ - container_of((disk)->private_data, struct ide_tape_obj, driver) +static void ide_tape_release(struct kref *); static struct ide_tape_obj *ide_tape_get(struct gendisk *disk) { struct ide_tape_obj *tape = NULL; mutex_lock(&idetape_ref_mutex); - tape = ide_tape_g(disk); - if (tape) - kref_get(&tape->kref); + tape = ide_drv_g(disk, ide_tape_obj); + if (tape) { + if (ide_device_get(tape->drive)) + tape = NULL; + else + kref_get(&tape->kref); + } mutex_unlock(&idetape_ref_mutex); return tape; } -static void ide_tape_release(struct kref *); - static void ide_tape_put(struct ide_tape_obj *tape) { + ide_drive_t *drive = tape->drive; + mutex_lock(&idetape_ref_mutex); kref_put(&tape->kref, ide_tape_release); + ide_device_put(drive); mutex_unlock(&idetape_ref_mutex); } @@ -371,8 +301,6 @@ static void ide_tape_put(struct ide_tape_obj *tape) */ static struct ide_tape_obj *idetape_devs[MAX_HWIFS * MAX_DRIVES]; -#define ide_tape_f(file) ((file)->private_data) - static struct ide_tape_obj *ide_tape_chrdev_get(unsigned int i) { struct ide_tape_obj *tape = NULL; @@ -401,7 +329,7 @@ static void idetape_input_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, count = min( (unsigned int)(bh->b_size - atomic_read(&bh->b_count)), bcount); - drive->hwif->input_data(drive, NULL, bh->b_data + + drive->hwif->tp_ops->input_data(drive, NULL, bh->b_data + atomic_read(&bh->b_count), count); bcount -= count; atomic_add(count, &bh->b_count); @@ -427,7 +355,7 @@ static void idetape_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, return; } count = min((unsigned int)pc->b_count, (unsigned int)bcount); - drive->hwif->output_data(drive, NULL, pc->b_data, count); + drive->hwif->tp_ops->output_data(drive, NULL, pc->b_data, count); bcount -= count; pc->b_data += count; pc->b_count -= count; @@ -442,7 +370,7 @@ static void idetape_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, } } -static void idetape_update_buffers(struct ide_atapi_pc *pc) +static void idetape_update_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc) { struct idetape_bh *bh = pc->bh; int count; @@ -466,59 +394,6 @@ static void idetape_update_buffers(struct ide_atapi_pc *pc) } /* - * idetape_next_pc_storage returns a pointer to a place in which we can - * safely store a packet command, even though we intend to leave the - * driver. A storage space for a maximum of IDETAPE_PC_STACK packet - * commands is allocated at initialization time. - */ -static struct ide_atapi_pc *idetape_next_pc_storage(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - - debug_log(DBG_PCRQ_STACK, "pc_stack_index=%d\n", tape->pc_stack_index); - - if (tape->pc_stack_index == IDETAPE_PC_STACK) - tape->pc_stack_index = 0; - return (&tape->pc_stack[tape->pc_stack_index++]); -} - -/* - * idetape_next_rq_storage is used along with idetape_next_pc_storage. - * Since we queue packet commands in the request queue, we need to - * allocate a request, along with the allocation of a packet command. - */ - -/************************************************************** - * * - * This should get fixed to use kmalloc(.., GFP_ATOMIC) * - * followed later on by kfree(). -ml * - * * - **************************************************************/ - -static struct request *idetape_next_rq_storage(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - - debug_log(DBG_PCRQ_STACK, "rq_stack_index=%d\n", tape->rq_stack_index); - - if (tape->rq_stack_index == IDETAPE_PC_STACK) - tape->rq_stack_index = 0; - return (&tape->rq_stack[tape->rq_stack_index++]); -} - -static void idetape_init_pc(struct ide_atapi_pc *pc) -{ - memset(pc->c, 0, 12); - pc->retries = 0; - pc->flags = 0; - pc->req_xfer = 0; - pc->buf = pc->pc_buf; - pc->buf_size = IDETAPE_PC_BUFFER_SIZE; - pc->bh = NULL; - pc->b_data = NULL; -} - -/* * called on each failed packet command retry to analyze the request sense. We * currently do not utilize this information. */ @@ -538,8 +413,8 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense) if (pc->flags & PC_FLAG_DMA_ERROR) { pc->xferred = pc->req_xfer - tape->blk_size * - be32_to_cpu(get_unaligned((u32 *)&sense[3])); - idetape_update_buffers(pc); + get_unaligned_be32(&sense[3]); + idetape_update_buffers(drive, pc); } /* @@ -600,7 +475,6 @@ static void ide_tape_kfree_buffer(idetape_tape_t *tape) bh = bh->b_reqnext; kfree(prev_bh); } - kfree(tape->merge_bh); } static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects) @@ -634,83 +508,70 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects) return 0; } -static ide_startstop_t idetape_request_sense_callback(ide_drive_t *drive) +static void ide_tape_handle_dsc(ide_drive_t *); + +static void ide_tape_callback(ide_drive_t *drive, int dsc) { idetape_tape_t *tape = drive->driver_data; + struct ide_atapi_pc *pc = drive->pc; + int uptodate = pc->error ? 0 : 1; debug_log(DBG_PROCS, "Enter %s\n", __func__); - if (!tape->pc->error) { - idetape_analyze_error(drive, tape->pc->buf); - idetape_end_request(drive, 1, 0); - } else { - printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - " - "Aborting request!\n"); - idetape_end_request(drive, 0, 0); - } - return ide_stopped; -} + if (dsc) + ide_tape_handle_dsc(drive); -static void idetape_create_request_sense_cmd(struct ide_atapi_pc *pc) -{ - idetape_init_pc(pc); - pc->c[0] = REQUEST_SENSE; - pc->c[4] = 20; - pc->req_xfer = 20; - pc->idetape_callback = &idetape_request_sense_callback; -} + if (tape->failed_pc == pc) + tape->failed_pc = NULL; -static void idetape_init_rq(struct request *rq, u8 cmd) -{ - blk_rq_init(NULL, rq); - rq->cmd_type = REQ_TYPE_SPECIAL; - rq->cmd[0] = cmd; -} + if (pc->c[0] == REQUEST_SENSE) { + if (uptodate) + idetape_analyze_error(drive, pc->buf); + else + printk(KERN_ERR "ide-tape: Error in REQUEST SENSE " + "itself - Aborting request!\n"); + } else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) { + struct request *rq = drive->hwif->hwgroup->rq; + int blocks = pc->xferred / tape->blk_size; -/* - * Generate a new packet command request in front of the request queue, before - * the current request, so that it will be processed immediately, on the next - * pass through the driver. The function below is called from the request - * handling part of the driver (the "bottom" part). Safe storage for the request - * should be allocated with ide_tape_next_{pc,rq}_storage() prior to that. - * - * Memory for those requests is pre-allocated at initialization time, and is - * limited to IDETAPE_PC_STACK requests. We assume that we have enough space for - * the maximum possible number of inter-dependent packet commands. - * - * The higher level of the driver - The ioctl handler and the character device - * handling functions should queue request to the lower level part and wait for - * their completion using idetape_queue_pc_tail or idetape_queue_rw_tail. - */ -static void idetape_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc, - struct request *rq) -{ - struct ide_tape_obj *tape = drive->driver_data; + tape->avg_size += blocks * tape->blk_size; - idetape_init_rq(rq, REQ_IDETAPE_PC1); - rq->buffer = (char *) pc; - rq->rq_disk = tape->disk; - (void) ide_do_drive_cmd(drive, rq, ide_preempt); -} + if (time_after_eq(jiffies, tape->avg_time + HZ)) { + tape->avg_speed = tape->avg_size * HZ / + (jiffies - tape->avg_time) / 1024; + tape->avg_size = 0; + tape->avg_time = jiffies; + } -/* - * idetape_retry_pc is called when an error was detected during the - * last packet command. We queue a request sense packet command in - * the head of the request list. - */ -static ide_startstop_t idetape_retry_pc (ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc; - struct request *rq; + tape->first_frame += blocks; + rq->current_nr_sectors -= blocks; - (void)ide_read_error(drive); - pc = idetape_next_pc_storage(drive); - rq = idetape_next_rq_storage(drive); - idetape_create_request_sense_cmd(pc); - set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags); - idetape_queue_pc_head(drive, pc, rq); - return ide_stopped; + if (pc->error) + uptodate = pc->error; + } else if (pc->c[0] == READ_POSITION && uptodate) { + u8 *readpos = pc->buf; + + 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(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags); + uptodate = 0; + } else { + debug_log(DBG_SENSE, "Block Location - %u\n", + be32_to_cpup((__be32 *)&readpos[4])); + + tape->partition = readpos[1]; + tape->first_frame = be32_to_cpup((__be32 *)&readpos[4]); + set_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags); + } + } + + idetape_end_request(drive, uptodate, 0); } /* @@ -727,195 +588,42 @@ static void idetape_postpone_request(ide_drive_t *drive) ide_stall_queue(drive, tape->dsc_poll_freq); } -typedef void idetape_io_buf(ide_drive_t *, struct ide_atapi_pc *, unsigned int); - -/* - * This is the usual interrupt handler which will be called during a packet - * command. We will transfer some of the data (as requested by the drive) and - * will re-point interrupt handler to us. When data transfer is finished, we - * will act according to the algorithm described before - * idetape_issue_pc. - */ -static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) +static void ide_tape_handle_dsc(ide_drive_t *drive) { - ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; - xfer_func_t *xferfunc; - idetape_io_buf *iobuf; - unsigned int temp; -#if SIMULATE_ERRORS - static int error_sim_count; -#endif - u16 bcount; - u8 stat, ireason; - - debug_log(DBG_PROCS, "Enter %s - interrupt handler\n", __func__); - - /* Clear the interrupt */ - stat = ide_read_status(drive); - - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - if (hwif->dma_ops->dma_end(drive) || (stat & ERR_STAT)) { - /* - * A DMA error is sometimes expected. For example, - * if the tape is crossing a filemark during a - * READ command, it will issue an irq and position - * itself before the filemark, so that only a partial - * data transfer will occur (which causes the DMA - * error). In that case, we will later ask the tape - * how much bytes of the original request were - * actually transferred (we can't receive that - * information from the DMA engine on most chipsets). - */ - - /* - * On the contrary, a DMA error is never expected; - * it usually indicates a hardware error or abort. - * If the tape crosses a filemark during a READ - * command, it will issue an irq and position itself - * after the filemark (not before). Only a partial - * data transfer will occur, but no DMA error. - * (AS, 19 Apr 2001) - */ - pc->flags |= PC_FLAG_DMA_ERROR; - } else { - pc->xferred = pc->req_xfer; - idetape_update_buffers(pc); - } - debug_log(DBG_PROCS, "DMA finished\n"); - } - - /* No more interrupts */ - if ((stat & DRQ_STAT) == 0) { - debug_log(DBG_SENSE, "Packet command completed, %d bytes" - " transferred\n", pc->xferred); - - pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - local_irq_enable(); - -#if SIMULATE_ERRORS - if ((pc->c[0] == WRITE_6 || pc->c[0] == READ_6) && - (++error_sim_count % 100) == 0) { - printk(KERN_INFO "ide-tape: %s: simulating error\n", - tape->name); - stat |= ERR_STAT; - } -#endif - if ((stat & ERR_STAT) && pc->c[0] == REQUEST_SENSE) - stat &= ~ERR_STAT; - if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) { - /* Error detected */ - debug_log(DBG_ERR, "%s: I/O error\n", tape->name); - - if (pc->c[0] == REQUEST_SENSE) { - printk(KERN_ERR "ide-tape: I/O error in request" - " sense command\n"); - return ide_do_reset(drive); - } - debug_log(DBG_ERR, "[cmd %x]: check condition\n", - pc->c[0]); - - /* Retry operation */ - return idetape_retry_pc(drive); - } - pc->error = 0; - if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) && - (stat & SEEK_STAT) == 0) { - /* Media access command */ - tape->dsc_polling_start = jiffies; - tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST; - tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT; - /* Allow ide.c to handle other requests */ - idetape_postpone_request(drive); - return ide_stopped; - } - if (tape->failed_pc == pc) - tape->failed_pc = NULL; - /* Command finished - Call the callback function */ - return pc->idetape_callback(drive); - } - - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) { - pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS; - printk(KERN_ERR "ide-tape: The tape wants to issue more " - "interrupts in DMA mode\n"); - printk(KERN_ERR "ide-tape: DMA disabled, reverting to PIO\n"); - ide_dma_off(drive); - return ide_do_reset(drive); - } - /* Get the number of bytes to transfer on this interrupt. */ - bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) | - hwif->INB(hwif->io_ports.lbam_addr); - - ireason = hwif->INB(hwif->io_ports.nsect_addr); - - if (ireason & CD) { - printk(KERN_ERR "ide-tape: CoD != 0 in %s\n", __func__); - return ide_do_reset(drive); - } - if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) { - /* Hopefully, we will never get here */ - printk(KERN_ERR "ide-tape: We wanted to %s, ", - (ireason & IO) ? "Write" : "Read"); - printk(KERN_ERR "ide-tape: but the tape wants us to %s !\n", - (ireason & IO) ? "Read" : "Write"); - return ide_do_reset(drive); - } - if (!(pc->flags & PC_FLAG_WRITING)) { - /* Reading - Check that we have enough space */ - temp = pc->xferred + bcount; - if (temp > pc->req_xfer) { - if (temp > pc->buf_size) { - printk(KERN_ERR "ide-tape: The tape wants to " - "send us more data than expected " - "- discarding data\n"); - ide_pad_transfer(drive, 0, bcount); - ide_set_handler(drive, &idetape_pc_intr, - IDETAPE_WAIT_CMD, NULL); - return ide_started; - } - debug_log(DBG_SENSE, "The tape wants to send us more " - "data than expected - allowing transfer\n"); - } - iobuf = &idetape_input_buffers; - xferfunc = hwif->input_data; - } else { - iobuf = &idetape_output_buffers; - xferfunc = hwif->output_data; - } + /* Media access command */ + tape->dsc_polling_start = jiffies; + tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST; + tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT; + /* Allow ide.c to handle other requests */ + idetape_postpone_request(drive); +} - if (pc->bh) - iobuf(drive, pc, bcount); +static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, + unsigned int bcount, int write) +{ + if (write) + idetape_output_buffers(drive, pc, bcount); else - xferfunc(drive, NULL, pc->cur_pos, bcount); + idetape_input_buffers(drive, pc, bcount); - /* Update the current position */ - pc->xferred += bcount; - pc->cur_pos += bcount; - - debug_log(DBG_SENSE, "[cmd %x] transferred %d bytes on that intr.\n", - pc->c[0], bcount); - - /* And set the interrupt handler again */ - ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); - return ide_started; + return bcount; } /* * Packet Command Interface * - * The current Packet Command is available in tape->pc, and will not change + * The current Packet Command is available in drive->pc, and will not change * until we finish handling it. Each packet command is associated with a * callback function that will be called when the command is finished. * * The handling will be done in three stages: * * 1. idetape_issue_pc will send the packet command to the drive, and will set - * the interrupt handler to idetape_pc_intr. + * the interrupt handler to ide_pc_intr. * - * 2. On each interrupt, idetape_pc_intr will be called. This step will be + * 2. On each interrupt, ide_pc_intr will be called. This step will be * repeated until the device signals us that no more interrupts will be issued. * * 3. ATAPI Tape media access commands have immediate status with a delayed @@ -939,60 +647,13 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) * again, the callback function will be called and then we will handle the next * request. */ -static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive) -{ - ide_hwif_t *hwif = drive->hwif; - idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; - int retries = 100; - ide_startstop_t startstop; - u8 ireason; - - if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { - printk(KERN_ERR "ide-tape: Strange, packet command initiated " - "yet DRQ isn't asserted\n"); - return startstop; - } - ireason = hwif->INB(hwif->io_ports.nsect_addr); - while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) { - printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while issuing " - "a packet command, retrying\n"); - udelay(100); - ireason = hwif->INB(hwif->io_ports.nsect_addr); - if (retries == 0) { - printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while " - "issuing a packet command, ignoring\n"); - ireason |= CD; - ireason &= ~IO; - } - } - if ((ireason & CD) == 0 || (ireason & IO)) { - printk(KERN_ERR "ide-tape: (IO,CoD) != (0,1) while issuing " - "a packet command\n"); - return ide_do_reset(drive); - } - /* Set the interrupt routine */ - ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); -#ifdef CONFIG_BLK_DEV_IDEDMA - /* Begin DMA, if necessary */ - if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) - hwif->dma_ops->dma_start(drive); -#endif - /* Send the actual packet */ - hwif->output_data(drive, NULL, pc->c, 12); - - return ide_started; -} static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc) { - ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - int dma_ok = 0; - u16 bcount; - if (tape->pc->c[0] == REQUEST_SENSE && + if (drive->pc->c[0] == REQUEST_SENSE && pc->c[0] == REQUEST_SENSE) { printk(KERN_ERR "ide-tape: possible ide-tape.c bug - " "Two request sense in serial were issued\n"); @@ -1000,8 +661,9 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, if (tape->failed_pc == NULL && pc->c[0] != REQUEST_SENSE) tape->failed_pc = pc; + /* Set the current packet command */ - tape->pc = pc; + drive->pc = pc; if (pc->retries > IDETAPE_MAX_PC_RETRIES || (pc->flags & PC_FLAG_ABORT)) { @@ -1025,56 +687,20 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, pc->error = IDETAPE_ERROR_GENERAL; } tape->failed_pc = NULL; - return pc->idetape_callback(drive); + drive->pc_callback(drive, 0); + return ide_stopped; } debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]); pc->retries++; - /* We haven't transferred any data yet */ - pc->xferred = 0; - pc->cur_pos = pc->buf; - /* Request to transfer the entire buffer at once */ - bcount = pc->req_xfer; - - if (pc->flags & PC_FLAG_DMA_ERROR) { - pc->flags &= ~PC_FLAG_DMA_ERROR; - printk(KERN_WARNING "ide-tape: DMA disabled, " - "reverting to PIO\n"); - ide_dma_off(drive); - } - if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma) - dma_ok = !hwif->dma_ops->dma_setup(drive); - - ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK | - IDE_TFLAG_OUT_DEVICE, bcount, dma_ok); - - if (dma_ok) - /* Will begin DMA later */ - pc->flags |= PC_FLAG_DMA_IN_PROGRESS; - if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags)) { - ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc, - IDETAPE_WAIT_CMD, NULL); - return ide_started; - } else { - ide_execute_pkt_cmd(drive); - return idetape_transfer_pc(drive); - } -} - -static ide_startstop_t idetape_pc_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - idetape_end_request(drive, tape->pc->error ? 0 : 1, 0); - return ide_stopped; + return ide_issue_pc(drive, WAIT_TAPE_CMD, NULL); } /* A mode sense command is used to "sense" tape parameters. */ static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = MODE_SENSE; if (page_code != IDETAPE_BLOCK_DESCRIPTOR) /* DBD = 1 - Don't return block descriptors */ @@ -1096,111 +722,79 @@ static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) pc->req_xfer = 24; else pc->req_xfer = 50; - pc->idetape_callback = &idetape_pc_callback; } static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) { + ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc *pc = tape->pc; + struct ide_atapi_pc *pc = drive->pc; u8 stat; - stat = ide_read_status(drive); + stat = hwif->tp_ops->read_status(hwif); - if (stat & SEEK_STAT) { - if (stat & ERR_STAT) { + if (stat & ATA_DSC) { + if (stat & ATA_ERR) { /* Error detected */ if (pc->c[0] != TEST_UNIT_READY) printk(KERN_ERR "ide-tape: %s: I/O error, ", tape->name); /* Retry operation */ - return idetape_retry_pc(drive); + ide_retry_pc(drive, tape->disk); + return ide_stopped; } pc->error = 0; - if (tape->failed_pc == pc) - tape->failed_pc = NULL; } else { pc->error = IDETAPE_ERROR_GENERAL; tape->failed_pc = NULL; } - return pc->idetape_callback(drive); -} - -static ide_startstop_t idetape_rw_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; - int blocks = tape->pc->xferred / tape->blk_size; - - tape->avg_size += blocks * tape->blk_size; - - if (time_after_eq(jiffies, tape->avg_time + HZ)) { - tape->avg_speed = tape->avg_size * HZ / - (jiffies - tape->avg_time) / 1024; - tape->avg_size = 0; - tape->avg_time = jiffies; - } - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - tape->first_frame += blocks; - rq->current_nr_sectors -= blocks; - - if (!tape->pc->error) - idetape_end_request(drive, 1, 0); - else - idetape_end_request(drive, tape->pc->error, 0); + drive->pc_callback(drive, 0); return ide_stopped; } -static void idetape_create_read_cmd(idetape_tape_t *tape, - struct ide_atapi_pc *pc, - unsigned int length, struct idetape_bh *bh) +static void ide_tape_create_rw_cmd(idetape_tape_t *tape, + struct ide_atapi_pc *pc, struct request *rq, + u8 opcode) { - idetape_init_pc(pc); - pc->c[0] = READ_6; - put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); - pc->c[1] = 1; - pc->idetape_callback = &idetape_rw_callback; - pc->bh = bh; - atomic_set(&bh->b_count, 0); - pc->buf = NULL; - pc->buf_size = length * tape->blk_size; - pc->req_xfer = pc->buf_size; - if (pc->req_xfer == tape->buffer_size) - pc->flags |= PC_FLAG_DMA_RECOMMENDED; -} + struct idetape_bh *bh = (struct idetape_bh *)rq->special; + unsigned int length = rq->current_nr_sectors; -static void idetape_create_write_cmd(idetape_tape_t *tape, - struct ide_atapi_pc *pc, - unsigned int length, struct idetape_bh *bh) -{ - idetape_init_pc(pc); - pc->c[0] = WRITE_6; + ide_init_pc(pc); put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); pc->c[1] = 1; - pc->idetape_callback = &idetape_rw_callback; - pc->flags |= PC_FLAG_WRITING; pc->bh = bh; - pc->b_data = bh->b_data; - pc->b_count = atomic_read(&bh->b_count); pc->buf = NULL; pc->buf_size = length * tape->blk_size; pc->req_xfer = pc->buf_size; if (pc->req_xfer == tape->buffer_size) - pc->flags |= PC_FLAG_DMA_RECOMMENDED; + pc->flags |= PC_FLAG_DMA_OK; + + if (opcode == READ_6) { + pc->c[0] = READ_6; + atomic_set(&bh->b_count, 0); + } else if (opcode == WRITE_6) { + pc->c[0] = WRITE_6; + pc->flags |= PC_FLAG_WRITING; + pc->b_data = bh->b_data; + pc->b_count = atomic_read(&bh->b_count); + } + + memcpy(rq->cmd, pc->c, 12); } static ide_startstop_t idetape_do_request(ide_drive_t *drive, struct request *rq, sector_t block) { + ide_hwif_t *hwif = drive->hwif; idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc *pc = NULL; struct request *postponed_rq = tape->postponed_rq; u8 stat; - debug_log(DBG_SENSE, "sector: %ld, nr_sectors: %ld," - " current_nr_sectors: %d\n", - rq->sector, rq->nr_sectors, rq->current_nr_sectors); + debug_log(DBG_SENSE, "sector: %llu, nr_sectors: %lu," + " current_nr_sectors: %u\n", + (unsigned long long)rq->sector, rq->nr_sectors, + rq->current_nr_sectors); if (!blk_special_request(rq)) { /* We do not support buffer cache originated requests. */ @@ -1211,8 +805,10 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } /* Retry a failed packet command */ - if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE) - return idetape_issue_pc(drive, tape->failed_pc); + if (tape->failed_pc && drive->pc->c[0] == REQUEST_SENSE) { + pc = tape->failed_pc; + goto out; + } if (postponed_rq != NULL) if (rq != postponed_rq) { @@ -1228,18 +824,19 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, * If the tape is still busy, postpone our request and service * the other device meanwhile. */ - stat = ide_read_status(drive); + stat = hwif->tp_ops->read_status(hwif); - if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2)) - set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags); + if ((drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) == 0 && + (rq->cmd[13] & REQ_IDETAPE_PC2) == 0) + set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags); - if (drive->post_reset == 1) { - set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags); - drive->post_reset = 0; + if (drive->dev_flags & IDE_DFLAG_POST_RESET) { + set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags); + drive->dev_flags &= ~IDE_DFLAG_POST_RESET; } - if (!test_and_clear_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags) && - (stat & SEEK_STAT) == 0) { + if (!test_and_clear_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags) && + (stat & ATA_DSC) == 0) { if (postponed_rq == NULL) { tape->dsc_polling_start = jiffies; tape->dsc_poll_freq = tape->best_dsc_rw_freq; @@ -1247,7 +844,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } else if (time_after(jiffies, tape->dsc_timeout)) { printk(KERN_ERR "ide-tape: %s: DSC timeout\n", tape->name); - if (rq->cmd[0] & REQ_IDETAPE_PC2) { + if (rq->cmd[13] & REQ_IDETAPE_PC2) { idetape_media_access_finished(drive); return ide_stopped; } else { @@ -1260,29 +857,28 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, idetape_postpone_request(drive); return ide_stopped; } - if (rq->cmd[0] & REQ_IDETAPE_READ) { - pc = idetape_next_pc_storage(drive); - idetape_create_read_cmd(tape, pc, rq->current_nr_sectors, - (struct idetape_bh *)rq->special); + if (rq->cmd[13] & REQ_IDETAPE_READ) { + pc = &tape->queued_pc; + ide_tape_create_rw_cmd(tape, pc, rq, READ_6); goto out; } - if (rq->cmd[0] & REQ_IDETAPE_WRITE) { - pc = idetape_next_pc_storage(drive); - idetape_create_write_cmd(tape, pc, rq->current_nr_sectors, - (struct idetape_bh *)rq->special); + if (rq->cmd[13] & REQ_IDETAPE_WRITE) { + pc = &tape->queued_pc; + ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6); goto out; } - if (rq->cmd[0] & REQ_IDETAPE_PC1) { + if (rq->cmd[13] & REQ_IDETAPE_PC1) { pc = (struct ide_atapi_pc *) rq->buffer; - rq->cmd[0] &= ~(REQ_IDETAPE_PC1); - rq->cmd[0] |= REQ_IDETAPE_PC2; + rq->cmd[13] &= ~(REQ_IDETAPE_PC1); + rq->cmd[13] |= REQ_IDETAPE_PC2; goto out; } - if (rq->cmd[0] & REQ_IDETAPE_PC2) { + if (rq->cmd[13] & REQ_IDETAPE_PC2) { idetape_media_access_finished(drive); return ide_stopped; } BUG(); + out: return idetape_issue_pc(drive, pc); } @@ -1447,40 +1043,6 @@ static void idetape_init_merge_buffer(idetape_tape_t *tape) } } -static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - u8 *readpos = tape->pc->buf; - - debug_log(DBG_PROCS, "Enter %s\n", __func__); - - if (!tape->pc->error) { - 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_FLAG_ADDRESS_VALID, &tape->flags); - idetape_end_request(drive, 0, 0); - } else { - debug_log(DBG_SENSE, "Block Location - %u\n", - be32_to_cpu(*(u32 *)&readpos[4])); - - tape->partition = readpos[1]; - tape->first_frame = - be32_to_cpu(*(u32 *)&readpos[4]); - set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags); - idetape_end_request(drive, 1, 0); - } - } else { - idetape_end_request(drive, 0, 0); - } - return ide_stopped; -} - /* * Write a filemark if write_filemark=1. Flush the device buffers without * writing a filemark otherwise. @@ -1488,75 +1050,30 @@ static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive) static void idetape_create_write_filemark_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc, int write_filemark) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = WRITE_FILEMARKS; pc->c[4] = write_filemark; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; -} - -static void idetape_create_test_unit_ready_cmd(struct ide_atapi_pc *pc) -{ - idetape_init_pc(pc); - pc->c[0] = TEST_UNIT_READY; - pc->idetape_callback = &idetape_pc_callback; -} - -/* - * We add a special packet command request to the tail of the request queue, and - * wait for it to be serviced. This is not to be called from within the request - * handling part of the driver! We allocate here data on the stack and it is - * valid until the request is finished. This is not the case for the bottom part - * of the driver, where we are always leaving the functions to wait for an - * interrupt or a timer event. - * - * From the bottom part of the driver, we should allocate safe memory using - * idetape_next_pc_storage() and ide_tape_next_rq_storage(), and add the request - * to the request list without waiting for it to be serviced! In that case, we - * usually use idetape_queue_pc_head(). - */ -static int idetape_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc) -{ - struct ide_tape_obj *tape = drive->driver_data; - struct request rq; - - idetape_init_rq(&rq, REQ_IDETAPE_PC1); - rq.buffer = (char *) pc; - rq.rq_disk = tape->disk; - return ide_do_drive_cmd(drive, &rq, ide_wait); -} - -static void idetape_create_load_unload_cmd(ide_drive_t *drive, - struct ide_atapi_pc *pc, int cmd) -{ - idetape_init_pc(pc); - pc->c[0] = START_STOP; - pc->c[4] = cmd; - pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout) { idetape_tape_t *tape = drive->driver_data; - struct ide_atapi_pc pc; + struct gendisk *disk = tape->disk; int load_attempted = 0; /* Wait for the tape to become ready */ - set_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags); + set_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags); timeout += jiffies; while (time_before(jiffies, timeout)) { - idetape_create_test_unit_ready_cmd(&pc); - if (!idetape_queue_pc_tail(drive, &pc)) + if (ide_do_test_unit_ready(drive, disk) == 0) return 0; if ((tape->sense_key == 2 && tape->asc == 4 && tape->ascq == 2) || (tape->asc == 0x3A)) { /* no media */ if (load_attempted) return -ENOMEDIUM; - idetape_create_load_unload_cmd(drive, &pc, - IDETAPE_LU_LOAD_MASK); - idetape_queue_pc_tail(drive, &pc); + ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); load_attempted = 1; /* not about to be ready */ } else if (!(tape->sense_key == 2 && tape->asc == 4 && @@ -1569,11 +1086,12 @@ static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout) static int idetape_flush_tape_buffers(ide_drive_t *drive) { + struct ide_tape_obj *tape = drive->driver_data; struct ide_atapi_pc pc; int rc; idetape_create_write_filemark_cmd(drive, &pc, 0); - rc = idetape_queue_pc_tail(drive, &pc); + rc = ide_queue_pc_tail(drive, tape->disk, &pc); if (rc) return rc; idetape_wait_ready(drive, 60 * 5 * HZ); @@ -1582,10 +1100,9 @@ static int idetape_flush_tape_buffers(ide_drive_t *drive) static void idetape_create_read_position_cmd(struct ide_atapi_pc *pc) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = READ_POSITION; pc->req_xfer = 20; - pc->idetape_callback = &idetape_read_position_callback; } static int idetape_read_position(ide_drive_t *drive) @@ -1597,7 +1114,7 @@ static int idetape_read_position(ide_drive_t *drive) debug_log(DBG_PROCS, "Enter %s\n", __func__); idetape_create_read_position_cmd(&pc); - if (idetape_queue_pc_tail(drive, &pc)) + if (ide_queue_pc_tail(drive, tape->disk, &pc)) return -1; position = tape->first_frame; return position; @@ -1607,29 +1124,12 @@ static void idetape_create_locate_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc, unsigned int block, u8 partition, int skip) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = POSITION_TO_ELEMENT; pc->c[1] = 2; put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]); pc->c[8] = partition; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; -} - -static int idetape_create_prevent_cmd(ide_drive_t *drive, - struct ide_atapi_pc *pc, int prevent) -{ - idetape_tape_t *tape = drive->driver_data; - - /* device supports locking according to capabilities page */ - if (!(tape->caps[6] & 0x01)) - return 0; - - idetape_init_pc(pc); - pc->c[0] = ALLOW_MEDIUM_REMOVAL; - pc->c[4] = prevent; - pc->idetape_callback = &idetape_pc_callback; - return 1; } static void __ide_tape_discard_merge_buffer(ide_drive_t *drive) @@ -1639,7 +1139,7 @@ static void __ide_tape_discard_merge_buffer(ide_drive_t *drive) if (tape->chrdev_dir != IDETAPE_DIR_READ) return; - clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags); + clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags); tape->merge_bh_size = 0; if (tape->merge_bh != NULL) { ide_tape_kfree_buffer(tape); @@ -1659,6 +1159,7 @@ static int idetape_position_tape(ide_drive_t *drive, unsigned int block, u8 partition, int skip) { idetape_tape_t *tape = drive->driver_data; + struct gendisk *disk = tape->disk; int retval; struct ide_atapi_pc pc; @@ -1666,12 +1167,12 @@ static int idetape_position_tape(ide_drive_t *drive, unsigned int block, __ide_tape_discard_merge_buffer(drive); idetape_wait_ready(drive, 60 * 5 * HZ); idetape_create_locate_cmd(drive, &pc, block, partition, skip); - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_queue_pc_tail(drive, disk, &pc); if (retval) return (retval); idetape_create_read_position_cmd(&pc); - return (idetape_queue_pc_tail(drive, &pc)); + return ide_queue_pc_tail(drive, disk, &pc); } static void ide_tape_discard_merge_buffer(ide_drive_t *drive, @@ -1700,63 +1201,66 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct idetape_bh *bh) { idetape_tape_t *tape = drive->driver_data; - struct request rq; + struct request *rq; + int ret, errors; debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd); - idetape_init_rq(&rq, cmd); - rq.rq_disk = tape->disk; - rq.special = (void *)bh; - rq.sector = tape->first_frame; - rq.nr_sectors = blocks; - rq.current_nr_sectors = blocks; - (void) ide_do_drive_cmd(drive, &rq, ide_wait); + rq = blk_get_request(drive->queue, READ, __GFP_WAIT); + rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd[13] = cmd; + rq->rq_disk = tape->disk; + rq->special = (void *)bh; + rq->sector = tape->first_frame; + rq->nr_sectors = blocks; + rq->current_nr_sectors = blocks; + blk_execute_rq(drive->queue, tape->disk, rq, 0); + + errors = rq->errors; + ret = tape->blk_size * (blocks - rq->current_nr_sectors); + blk_put_request(rq); if ((cmd & (REQ_IDETAPE_READ | REQ_IDETAPE_WRITE)) == 0) return 0; if (tape->merge_bh) idetape_init_merge_buffer(tape); - if (rq.errors == IDETAPE_ERROR_GENERAL) + if (errors == IDETAPE_ERROR_GENERAL) return -EIO; - return (tape->blk_size * (blocks-rq.current_nr_sectors)); + return ret; } static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = INQUIRY; pc->c[4] = 254; pc->req_xfer = 254; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_rewind_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = REZERO_UNIT; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_erase_cmd(struct ide_atapi_pc *pc) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = ERASE; pc->c[1] = 1; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd) { - idetape_init_pc(pc); + ide_init_pc(pc); pc->c[0] = SPACE; put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]); pc->c[1] = cmd; pc->flags |= PC_FLAG_WAIT_FOR_DSC; - pc->idetape_callback = &idetape_pc_callback; } /* Queue up a character device originated write request. */ @@ -1851,7 +1355,7 @@ static int idetape_init_read(ide_drive_t *drive) * No point in issuing this if DSC overlap isn't supported, some * drives (Seagate STT3401A) will return an error. */ - if (drive->dsc_overlap) { + if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) { bytes_read = idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, 0, tape->merge_bh); @@ -1875,7 +1379,7 @@ static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks) debug_log(DBG_PROCS, "Enter %s, %d blocks\n", __func__, blocks); /* If we are at a filemark, return a read length of 0 */ - if (test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags)) + if (test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags)) return 0; idetape_init_read(drive); @@ -1915,20 +1419,20 @@ static void idetape_pad_zeros(ide_drive_t *drive, int bcount) */ static int idetape_rewind_tape(ide_drive_t *drive) { + struct ide_tape_obj *tape = drive->driver_data; + struct gendisk *disk = tape->disk; int retval; struct ide_atapi_pc pc; - idetape_tape_t *tape; - tape = drive->driver_data; debug_log(DBG_SENSE, "Enter %s\n", __func__); idetape_create_rewind_cmd(drive, &pc); - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_queue_pc_tail(drive, disk, &pc); if (retval) return retval; idetape_create_read_position_cmd(&pc); - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_queue_pc_tail(drive, disk, &pc); if (retval) return retval; return 0; @@ -1971,6 +1475,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, int mt_count) { idetape_tape_t *tape = drive->driver_data; + struct gendisk *disk = tape->disk; struct ide_atapi_pc pc; int retval, count = 0; int sprev = !!(tape->caps[4] & 0x20); @@ -1985,7 +1490,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, if (tape->chrdev_dir == IDETAPE_DIR_READ) { tape->merge_bh_size = 0; - if (test_and_clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags)) + if (test_and_clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags)) ++count; ide_tape_discard_merge_buffer(drive, 0); } @@ -1995,7 +1500,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, case MTBSF: idetape_create_space_cmd(&pc, mt_count - count, IDETAPE_SPACE_OVER_FILEMARK); - return idetape_queue_pc_tail(drive, &pc); + return ide_queue_pc_tail(drive, disk, &pc); case MTFSFM: case MTBSFM: if (!sprev) @@ -2031,7 +1536,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, static ssize_t idetape_chrdev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { - struct ide_tape_obj *tape = ide_tape_f(file); + struct ide_tape_obj *tape = file->private_data; ide_drive_t *drive = tape->drive; ssize_t bytes_read, temp, actually_read = 0, rc; ssize_t ret = 0; @@ -2040,7 +1545,7 @@ static ssize_t idetape_chrdev_read(struct file *file, char __user *buf, debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count); if (tape->chrdev_dir != IDETAPE_DIR_READ) { - if (test_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags)) + if (test_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags)) if (count > tape->blk_size && (count % tape->blk_size) == 0) tape->user_bs_factor = count / tape->blk_size; @@ -2080,7 +1585,7 @@ static ssize_t idetape_chrdev_read(struct file *file, char __user *buf, tape->merge_bh_size = bytes_read-temp; } finish: - if (!actually_read && test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags)) { + if (!actually_read && test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags)) { debug_log(DBG_SENSE, "%s: spacing over filemark\n", tape->name); idetape_space_over_filemarks(drive, MTFSF, 1); @@ -2093,7 +1598,7 @@ finish: static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - struct ide_tape_obj *tape = ide_tape_f(file); + struct ide_tape_obj *tape = file->private_data; ide_drive_t *drive = tape->drive; ssize_t actually_written = 0; ssize_t ret = 0; @@ -2126,7 +1631,7 @@ static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf, * point in issuing this if DSC overlap isn't supported, some * drives (Seagate STT3401A) will return an error. */ - if (drive->dsc_overlap) { + if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) { ssize_t retval = idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, 0, tape->merge_bh); @@ -2184,11 +1689,12 @@ static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf, static int idetape_write_filemark(ide_drive_t *drive) { + struct ide_tape_obj *tape = drive->driver_data; struct ide_atapi_pc pc; /* Write a filemark */ idetape_create_write_filemark_cmd(drive, &pc, 1); - if (idetape_queue_pc_tail(drive, &pc)) { + if (ide_queue_pc_tail(drive, tape->disk, &pc)) { printk(KERN_ERR "ide-tape: Couldn't write a filemark\n"); return -EIO; } @@ -2211,6 +1717,7 @@ static int idetape_write_filemark(ide_drive_t *drive) static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) { idetape_tape_t *tape = drive->driver_data; + struct gendisk *disk = tape->disk; struct ide_atapi_pc pc; int i, retval; @@ -2247,9 +1754,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) return 0; case MTLOAD: ide_tape_discard_merge_buffer(drive, 0); - idetape_create_load_unload_cmd(drive, &pc, - IDETAPE_LU_LOAD_MASK); - return idetape_queue_pc_tail(drive, &pc); + return ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); case MTUNLOAD: case MTOFFL: /* @@ -2257,41 +1762,37 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) * attempting to eject. */ if (tape->door_locked) { - if (idetape_create_prevent_cmd(drive, &pc, 0)) - if (!idetape_queue_pc_tail(drive, &pc)) - tape->door_locked = DOOR_UNLOCKED; + if (!ide_set_media_lock(drive, disk, 0)) + tape->door_locked = DOOR_UNLOCKED; } ide_tape_discard_merge_buffer(drive, 0); - idetape_create_load_unload_cmd(drive, &pc, - !IDETAPE_LU_LOAD_MASK); - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_do_start_stop(drive, disk, !IDETAPE_LU_LOAD_MASK); if (!retval) - clear_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags); + clear_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags); return retval; case MTNOP: ide_tape_discard_merge_buffer(drive, 0); return idetape_flush_tape_buffers(drive); case MTRETEN: ide_tape_discard_merge_buffer(drive, 0); - idetape_create_load_unload_cmd(drive, &pc, + return ide_do_start_stop(drive, disk, IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK); - return idetape_queue_pc_tail(drive, &pc); case MTEOM: idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD); - return idetape_queue_pc_tail(drive, &pc); + return ide_queue_pc_tail(drive, disk, &pc); case MTERASE: (void)idetape_rewind_tape(drive); idetape_create_erase_cmd(&pc); - return idetape_queue_pc_tail(drive, &pc); + return ide_queue_pc_tail(drive, disk, &pc); case MTSETBLK: if (mt_count) { if (mt_count < tape->blk_size || mt_count % tape->blk_size) return -EIO; tape->user_bs_factor = mt_count / tape->blk_size; - clear_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags); + clear_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags); } else - set_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags); + set_bit(IDE_AFLAG_DETECT_BS, &drive->atapi_flags); return 0; case MTSEEK: ide_tape_discard_merge_buffer(drive, 0); @@ -2303,17 +1804,13 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) case MTFSR: case MTBSR: case MTLOCK: - if (!idetape_create_prevent_cmd(drive, &pc, 1)) - return 0; - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_set_media_lock(drive, disk, 1); if (retval) return retval; tape->door_locked = DOOR_EXPLICITLY_LOCKED; return 0; case MTUNLOCK: - if (!idetape_create_prevent_cmd(drive, &pc, 0)) - return 0; - retval = idetape_queue_pc_tail(drive, &pc); + retval = ide_set_media_lock(drive, disk, 0); if (retval) return retval; tape->door_locked = DOOR_UNLOCKED; @@ -2333,7 +1830,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) static int idetape_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - struct ide_tape_obj *tape = ide_tape_f(file); + struct ide_tape_obj *tape = file->private_data; ide_drive_t *drive = tape->drive; struct mtop mtop; struct mtget mtget; @@ -2395,7 +1892,7 @@ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive) struct ide_atapi_pc pc; idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR); - if (idetape_queue_pc_tail(drive, &pc)) { + if (ide_queue_pc_tail(drive, tape->disk, &pc)) { printk(KERN_ERR "ide-tape: Can't get block descriptor\n"); if (tape->blk_size == 0) { printk(KERN_WARNING "ide-tape: Cannot deal with zero " @@ -2415,15 +1912,17 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) unsigned int minor = iminor(inode), i = minor & ~0xc0; ide_drive_t *drive; idetape_tape_t *tape; - struct ide_atapi_pc pc; int retval; if (i >= MAX_HWIFS * MAX_DRIVES) return -ENXIO; + lock_kernel(); tape = ide_tape_chrdev_get(i); - if (!tape) + if (!tape) { + unlock_kernel(); return -ENXIO; + } debug_log(DBG_CHRDEV, "Enter %s\n", __func__); @@ -2438,20 +1937,20 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) filp->private_data = tape; - if (test_and_set_bit(IDETAPE_FLAG_BUSY, &tape->flags)) { + if (test_and_set_bit(IDE_AFLAG_BUSY, &drive->atapi_flags)) { retval = -EBUSY; goto out_put_tape; } retval = idetape_wait_ready(drive, 60 * HZ); if (retval) { - clear_bit(IDETAPE_FLAG_BUSY, &tape->flags); + clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags); printk(KERN_ERR "ide-tape: %s: drive not ready\n", tape->name); goto out_put_tape; } idetape_read_position(drive); - if (!test_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags)) + if (!test_bit(IDE_AFLAG_ADDRESS_VALID, &drive->atapi_flags)) (void)idetape_rewind_tape(drive); /* Read block size and write protect status from drive. */ @@ -2467,7 +1966,7 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) if (tape->write_prot) { if ((filp->f_flags & O_ACCMODE) == O_WRONLY || (filp->f_flags & O_ACCMODE) == O_RDWR) { - clear_bit(IDETAPE_FLAG_BUSY, &tape->flags); + clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags); retval = -EROFS; goto out_put_tape; } @@ -2475,17 +1974,17 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp) /* Lock the tape drive door so user can't eject. */ if (tape->chrdev_dir == IDETAPE_DIR_NONE) { - if (idetape_create_prevent_cmd(drive, &pc, 1)) { - if (!idetape_queue_pc_tail(drive, &pc)) { - if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) - tape->door_locked = DOOR_LOCKED; - } + if (!ide_set_media_lock(drive, tape->disk, 1)) { + if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) + tape->door_locked = DOOR_LOCKED; } } + unlock_kernel(); return 0; out_put_tape: ide_tape_put(tape); + unlock_kernel(); return retval; } @@ -2508,9 +2007,8 @@ static void idetape_write_release(ide_drive_t *drive, unsigned int minor) static int idetape_chrdev_release(struct inode *inode, struct file *filp) { - struct ide_tape_obj *tape = ide_tape_f(filp); + struct ide_tape_obj *tape = filp->private_data; ide_drive_t *drive = tape->drive; - struct ide_atapi_pc pc; unsigned int minor = iminor(inode); lock_kernel(); @@ -2525,69 +2023,28 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp) ide_tape_discard_merge_buffer(drive, 1); } - if (minor < 128 && test_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags)) + if (minor < 128 && test_bit(IDE_AFLAG_MEDIUM_PRESENT, &drive->atapi_flags)) (void) idetape_rewind_tape(drive); if (tape->chrdev_dir == IDETAPE_DIR_NONE) { if (tape->door_locked == DOOR_LOCKED) { - if (idetape_create_prevent_cmd(drive, &pc, 0)) { - if (!idetape_queue_pc_tail(drive, &pc)) - tape->door_locked = DOOR_UNLOCKED; - } + if (!ide_set_media_lock(drive, tape->disk, 0)) + tape->door_locked = DOOR_UNLOCKED; } } - clear_bit(IDETAPE_FLAG_BUSY, &tape->flags); + clear_bit(IDE_AFLAG_BUSY, &drive->atapi_flags); ide_tape_put(tape); unlock_kernel(); return 0; } -/* - * check the contents of the ATAPI IDENTIFY command results. We return: - * - * 1 - If the tape can be supported by us, based on the information we have so - * far. - * - * 0 - If this tape driver is not currently supported by us. - */ -static int idetape_identify_device(ide_drive_t *drive) -{ - u8 gcw[2], protocol, device_type, removable, packet_size; - - if (drive->id_read == 0) - return 1; - - *((unsigned short *) &gcw) = drive->id->config; - - protocol = (gcw[1] & 0xC0) >> 6; - device_type = gcw[1] & 0x1F; - removable = !!(gcw[0] & 0x80); - packet_size = gcw[0] & 0x3; - - /* Check that we can support this device */ - if (protocol != 2) - printk(KERN_ERR "ide-tape: Protocol (0x%02x) is not ATAPI\n", - protocol); - else if (device_type != 1) - printk(KERN_ERR "ide-tape: Device type (0x%02x) is not set " - "to tape\n", device_type); - else if (!removable) - printk(KERN_ERR "ide-tape: The removable flag is not set\n"); - else if (packet_size != 0) { - printk(KERN_ERR "ide-tape: Packet size (0x%02x) is not 12" - " bytes\n", packet_size); - } else - return 1; - return 0; -} - static void idetape_get_inquiry_results(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; struct ide_atapi_pc pc; - char fw_rev[6], vendor_id[10], product_id[18]; + char fw_rev[4], vendor_id[8], product_id[16]; idetape_create_inquiry_cmd(&pc); - if (idetape_queue_pc_tail(drive, &pc)) { + if (ide_queue_pc_tail(drive, tape->disk, &pc)) { printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results\n", tape->name); return; @@ -2596,11 +2053,11 @@ static void idetape_get_inquiry_results(ide_drive_t *drive) memcpy(product_id, &pc.buf[16], 16); memcpy(fw_rev, &pc.buf[32], 4); - ide_fixstring(vendor_id, 10, 0); - ide_fixstring(product_id, 18, 0); - ide_fixstring(fw_rev, 6, 0); + ide_fixstring(vendor_id, 8, 0); + ide_fixstring(product_id, 16, 0); + ide_fixstring(fw_rev, 4, 0); - printk(KERN_INFO "ide-tape: %s <-> %s: %s %s rev %s\n", + printk(KERN_INFO "ide-tape: %s <-> %s: %.8s %.16s rev %.4s\n", drive->name, tape->name, vendor_id, product_id, fw_rev); } @@ -2616,7 +2073,7 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive) u8 speed, max_speed; idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE); - if (idetape_queue_pc_tail(drive, &pc)) { + if (ide_queue_pc_tail(drive, tape->disk, &pc)) { printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming" " some default values\n"); tape->blk_size = 512; @@ -2628,26 +2085,31 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive) caps = pc.buf + 4 + pc.buf[3]; /* convert to host order and save for later use */ - speed = be16_to_cpu(*(u16 *)&caps[14]); - max_speed = be16_to_cpu(*(u16 *)&caps[8]); + speed = be16_to_cpup((__be16 *)&caps[14]); + max_speed = be16_to_cpup((__be16 *)&caps[8]); - put_unaligned(max_speed, (u16 *)&caps[8]); - put_unaligned(be16_to_cpu(*(u16 *)&caps[12]), (u16 *)&caps[12]); - put_unaligned(speed, (u16 *)&caps[14]); - put_unaligned(be16_to_cpu(*(u16 *)&caps[16]), (u16 *)&caps[16]); + *(u16 *)&caps[8] = max_speed; + *(u16 *)&caps[12] = be16_to_cpup((__be16 *)&caps[12]); + *(u16 *)&caps[14] = speed; + *(u16 *)&caps[16] = be16_to_cpup((__be16 *)&caps[16]); if (!speed) { printk(KERN_INFO "ide-tape: %s: invalid tape speed " "(assuming 650KB/sec)\n", drive->name); - put_unaligned(650, (u16 *)&caps[14]); + *(u16 *)&caps[14] = 650; } if (!max_speed) { printk(KERN_INFO "ide-tape: %s: invalid max_speed " "(assuming 650KB/sec)\n", drive->name); - put_unaligned(650, (u16 *)&caps[8]); + *(u16 *)&caps[8] = 650; } memcpy(&tape->caps, caps, 20); + + /* device lacks locking support according to capabilities page */ + if ((caps[6] & 1) == 0) + drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK; + if (caps[7] & 0x02) tape->blk_size = 512; else if (caps[7] & 0x04) @@ -2655,28 +2117,56 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive) } #ifdef CONFIG_IDE_PROC_FS -static void idetape_add_settings(ide_drive_t *drive) -{ - idetape_tape_t *tape = drive->driver_data; - - ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff, - 1, 2, (u16 *)&tape->caps[16], NULL); - ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff, - 1, 1, (u16 *)&tape->caps[14], NULL); - ide_add_setting(drive, "buffer_size", SETTING_READ, TYPE_INT, 0, 0xffff, - 1, 1024, &tape->buffer_size, NULL); - ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN, - IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_freq, - NULL); - ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, - 1, &drive->dsc_overlap, NULL); - ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff, - 1, 1, &tape->avg_speed, NULL); - ide_add_setting(drive, "debug_mask", SETTING_RW, TYPE_INT, 0, 0xffff, 1, - 1, &tape->debug_mask, NULL); -} -#else -static inline void idetape_add_settings(ide_drive_t *drive) { ; } +#define ide_tape_devset_get(name, field) \ +static int get_##name(ide_drive_t *drive) \ +{ \ + idetape_tape_t *tape = drive->driver_data; \ + return tape->field; \ +} + +#define ide_tape_devset_set(name, field) \ +static int set_##name(ide_drive_t *drive, int arg) \ +{ \ + idetape_tape_t *tape = drive->driver_data; \ + tape->field = arg; \ + return 0; \ +} + +#define ide_tape_devset_rw_field(_name, _field) \ +ide_tape_devset_get(_name, _field) \ +ide_tape_devset_set(_name, _field) \ +IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) + +#define ide_tape_devset_r_field(_name, _field) \ +ide_tape_devset_get(_name, _field) \ +IDE_DEVSET(_name, 0, get_##_name, NULL) + +static int mulf_tdsc(ide_drive_t *drive) { return 1000; } +static int divf_tdsc(ide_drive_t *drive) { return HZ; } +static int divf_buffer(ide_drive_t *drive) { return 2; } +static int divf_buffer_size(ide_drive_t *drive) { return 1024; } + +ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP); + +ide_tape_devset_rw_field(debug_mask, debug_mask); +ide_tape_devset_rw_field(tdsc, best_dsc_rw_freq); + +ide_tape_devset_r_field(avg_speed, avg_speed); +ide_tape_devset_r_field(speed, caps[14]); +ide_tape_devset_r_field(buffer, caps[16]); +ide_tape_devset_r_field(buffer_size, buffer_size); + +static const struct ide_proc_devset idetape_settings[] = { + __IDE_PROC_DEVSET(avg_speed, 0, 0xffff, NULL, NULL), + __IDE_PROC_DEVSET(buffer, 0, 0xffff, NULL, divf_buffer), + __IDE_PROC_DEVSET(buffer_size, 0, 0xffff, NULL, divf_buffer_size), + __IDE_PROC_DEVSET(debug_mask, 0, 0xffff, NULL, NULL), + __IDE_PROC_DEVSET(dsc_overlap, 0, 1, NULL, NULL), + __IDE_PROC_DEVSET(speed, 0, 0xffff, NULL, NULL), + __IDE_PROC_DEVSET(tdsc, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, + mulf_tdsc, divf_tdsc), + { 0 }, +}; #endif /* @@ -2695,30 +2185,31 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor) unsigned long t; int speed; int buffer_size; - u8 gcw[2]; u16 *ctl = (u16 *)&tape->caps[12]; + drive->pc_callback = ide_tape_callback; + drive->pc_update_buffers = idetape_update_buffers; + drive->pc_io_buffers = ide_tape_io_buffers; + spin_lock_init(&tape->lock); - drive->dsc_overlap = 1; + + drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP; + if (drive->hwif->host_flags & IDE_HFLAG_NO_DSC) { printk(KERN_INFO "ide-tape: %s: disabling DSC overlap\n", tape->name); - drive->dsc_overlap = 0; + drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; } + /* Seagate Travan drives do not support DSC overlap. */ - if (strstr(drive->id->model, "Seagate STT3401")) - drive->dsc_overlap = 0; + if (strstr((char *)&drive->id[ATA_ID_PROD], "Seagate STT3401")) + drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; + tape->minor = minor; tape->name[0] = 'h'; tape->name[1] = 't'; tape->name[2] = '0' + minor; tape->chrdev_dir = IDETAPE_DIR_NONE; - tape->pc = tape->pc_stack; - *((unsigned short *) &gcw) = drive->id->config; - - /* Command packet DRQ type */ - if (((gcw[0] & 0x60) >> 5) == 1) - set_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags); idetape_get_inquiry_results(drive); idetape_get_mode_sense_results(drive); @@ -2746,18 +2237,17 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor) * Ensure that the number we got makes sense; limit it within * IDETAPE_DSC_RW_MIN and IDETAPE_DSC_RW_MAX. */ - tape->best_dsc_rw_freq = max_t(unsigned long, - min_t(unsigned long, t, IDETAPE_DSC_RW_MAX), - IDETAPE_DSC_RW_MIN); + tape->best_dsc_rw_freq = clamp_t(unsigned long, t, IDETAPE_DSC_RW_MIN, + IDETAPE_DSC_RW_MAX); printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, " "%lums tDSC%s\n", drive->name, tape->name, *(u16 *)&tape->caps[14], (*(u16 *)&tape->caps[16] * 512) / tape->buffer_size, tape->buffer_size / 1024, tape->best_dsc_rw_freq * 1000 / HZ, - drive->using_dma ? ", DMA":""); + (drive->dev_flags & IDE_DFLAG_USING_DMA) ? ", DMA" : ""); - idetape_add_settings(drive); + ide_proc_register_driver(drive, tape->driver); } static void ide_tape_remove(ide_drive_t *drive) @@ -2773,13 +2263,13 @@ static void ide_tape_remove(ide_drive_t *drive) static void ide_tape_release(struct kref *kref) { - struct ide_tape_obj *tape = to_ide_tape(kref); + struct ide_tape_obj *tape = to_ide_drv(kref, ide_tape_obj); ide_drive_t *drive = tape->drive; struct gendisk *g = tape->disk; BUG_ON(tape->merge_bh_size); - drive->dsc_overlap = 0; + drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; drive->driver_data = NULL; device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor)); device_destroy(idetape_sysfs_class, @@ -2821,14 +2311,12 @@ static ide_driver_t idetape_driver = { .probe = ide_tape_probe, .remove = ide_tape_remove, .version = IDETAPE_VERSION, - .media = ide_tape, - .supports_dsc_overlap = 1, .do_request = idetape_do_request, .end_request = idetape_end_request, .error = __ide_error, - .abort = __ide_abort, #ifdef CONFIG_IDE_PROC_FS .proc = idetape_proc, + .settings = idetape_settings, #endif }; @@ -2857,7 +2345,7 @@ static int idetape_open(struct inode *inode, struct file *filp) static int idetape_release(struct inode *inode, struct file *filp) { struct gendisk *disk = inode->i_bdev->bd_disk; - struct ide_tape_obj *tape = ide_tape_g(disk); + struct ide_tape_obj *tape = ide_drv_g(disk, ide_tape_obj); ide_tape_put(tape); @@ -2868,7 +2356,7 @@ static int idetape_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct block_device *bdev = inode->i_bdev; - struct ide_tape_obj *tape = ide_tape_g(bdev->bd_disk); + struct ide_tape_obj *tape = ide_drv_g(bdev->bd_disk, ide_tape_obj); ide_drive_t *drive = tape->drive; int err = generic_ide_ioctl(drive, file, bdev, cmd, arg); if (err == -EINVAL) @@ -2891,20 +2379,16 @@ static int ide_tape_probe(ide_drive_t *drive) if (!strstr("ide-tape", drive->driver_req)) goto failed; - if (!drive->present) - goto failed; + if (drive->media != ide_tape) goto failed; - if (!idetape_identify_device(drive)) { + + if ((drive->dev_flags & IDE_DFLAG_ID_READ) && + ide_check_atapi_device(drive, DRV_NAME) == 0) { printk(KERN_ERR "ide-tape: %s: not supported by this version of" " the driver\n", drive->name); goto failed; } - if (drive->scsi) { - printk(KERN_INFO "ide-tape: passing drive %s to ide-scsi" - " emulation.\n", drive->name); - goto failed; - } tape = kzalloc(sizeof(idetape_tape_t), GFP_KERNEL); if (tape == NULL) { printk(KERN_ERR "ide-tape: %s: Can't allocate a tape struct\n", @@ -2918,8 +2402,6 @@ static int ide_tape_probe(ide_drive_t *drive) ide_init_disk(g, drive); - ide_proc_register_driver(drive, &idetape_driver); - kref_init(&tape->kref); tape->drive = drive; @@ -2938,10 +2420,12 @@ static int ide_tape_probe(ide_drive_t *drive) idetape_setup(drive, tape, minor); - device_create(idetape_sysfs_class, &drive->gendev, - MKDEV(IDETAPE_MAJOR, minor), "%s", tape->name); - device_create(idetape_sysfs_class, &drive->gendev, - MKDEV(IDETAPE_MAJOR, minor + 128), "n%s", tape->name); + device_create_drvdata(idetape_sysfs_class, &drive->gendev, + MKDEV(IDETAPE_MAJOR, minor), NULL, + "%s", tape->name); + device_create_drvdata(idetape_sysfs_class, &drive->gendev, + MKDEV(IDETAPE_MAJOR, minor + 128), NULL, + "n%s", tape->name); g->fops = &idetape_block_ops; ide_register_region(g); |