trace_block_rq_complete(req->q, req);
/*
- * for a REQ_TYPE_BLOCK_PC request, we want to carry any eventual
- * sense key with us all the way through
+ * For fs requests, rq is just carrier of independent bio's
+ * and each partial completion should be handled separately.
+ * Reset per-request error on each partial completion.
+ *
+ * TODO: tj: This is too subtle. It would be better to let
+ * low level drivers do what they see fit.
*/
- if (!blk_pc_request(req))
+ if (blk_fs_request(req))
req->errors = 0;
if (error && (blk_fs_request(req) && !(req->cmd_flags & REQ_QUIET))) {
return cbl;
}
-#if !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC)
+#ifndef CONFIG_SPARC64
/**
* init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
* @hwif: interface to configure
*
* Obtain the IRQ tables for an ALi based IDE solution on the PC
* class platforms. This part of the code isn't applicable to the
- * Sparc and PowerPC systems.
+ * Sparc systems.
*/
static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
u8 ideic, inmir;
s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
1, 11, 0, 12, 0, 14, 0, 15 };
int irq = -1;
- if (dev->device == PCI_DEVICE_ID_AL_M5229)
- hwif->irq = hwif->channel ? 15 : 14;
-
if (isa_dev) {
/*
* read IDE interface control
}
#else
#define init_hwif_ali15x3 NULL
-#endif /* !defined(CONFIG_SPARC64) && !defined(CONFIG_PPC) */
+#endif /* CONFIG_SPARC64 */
/**
* init_dma_ali15x3 - set up DMA on ALi15x3
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA | IDE_HFLAG_SINGLE |
IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_UNMASK_IRQS,
.pio_mask = ATA_PIO6,
+ .chipset = ide_generic,
};
/*
static int __init at91_ide_probe(struct platform_device *pdev)
{
int ret;
- hw_regs_t hw;
- hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
struct ide_host *host;
struct resource *res;
unsigned long tf_base = 0, ctl_base = 0;
ide_std_init_ports(&hw, tf_base, ctl_base + 6);
hw.irq = board->irq_pin;
- hw.chipset = ide_generic;
hw.dev = &pdev->dev;
- host = ide_host_alloc(&at91_ide_port_info, hws);
+ host = ide_host_alloc(&at91_ide_port_info, hws, 1);
if (!host) {
perr("failed to allocate ide host\n");
return -ENOMEM;
}
#endif
-static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif)
+static void auide_setup_ports(struct ide_hw *hw, _auide_hwif *ahwif)
{
int i;
unsigned long *ata_regs = hw->io_ports_array;
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
.mwdma_mask = ATA_MWDMA2,
#endif
+ .chipset = ide_au1xxx,
};
static int au_ide_probe(struct platform_device *dev)
struct resource *res;
struct ide_host *host;
int ret = 0;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
char *mode = "MWDMA2";
auide_setup_ports(&hw, ahwif);
hw.irq = ahwif->irq;
hw.dev = &dev->dev;
- hw.chipset = ide_au1xxx;
- ret = ide_host_add(&au1xxx_port_info, hws, &host);
+ ret = ide_host_add(&au1xxx_port_info, hws, 1, &host);
if (ret)
goto out;
return 1;
}
-static void __init buddha_setup_ports(hw_regs_t *hw, unsigned long base,
+static void __init buddha_setup_ports(struct ide_hw *hw, unsigned long base,
unsigned long ctl, unsigned long irq_port,
ide_ack_intr_t *ack_intr)
{
hw->irq = IRQ_AMIGA_PORTS;
hw->ack_intr = ack_intr;
-
- hw->chipset = ide_generic;
}
static const struct ide_port_info buddha_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_generic,
};
/*
while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
unsigned long board;
- hw_regs_t hw[MAX_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[MAX_NUM_HWIFS], *hws[MAX_NUM_HWIFS];
if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
buddha_num_hwifs = BUDDHA_NUM_HWIFS;
hws[i] = &hw[i];
}
- ide_host_add(&buddha_port_info, hws, NULL);
+ ide_host_add(&buddha_port_info, hws, i, NULL);
}
return 0;
int second_port_cmd640 = 0, rc;
const char *bus_type, *port2;
u8 b, cfr;
- hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[2], *hws[2];
if (cmd640_vlb && probe_for_cmd640_vlb()) {
bus_type = "VLB";
ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
hw[0].irq = 14;
- hw[0].chipset = ide_cmd640;
ide_std_init_ports(&hw[1], 0x170, 0x376);
hw[1].irq = 15;
- hw[1].chipset = ide_cmd640;
printk(KERN_INFO "cmd640: buggy cmd640%c interface on %s, config=0x%02x"
"\n", 'a' + cmd640_chip_version - 1, bus_type, cfr);
cmd640_dump_regs();
#endif
- return ide_host_add(&cmd640_port_info, hws, NULL);
+ return ide_host_add(&cmd640_port_info, hws, second_port_cmd640 ? 2 : 1,
+ NULL);
}
module_param_named(probe_vlb, cmd640_vlb, bool, 0);
static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
const struct ide_port_info *d = &cyrix_chipset;
- hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[2], *hws[] = { NULL, NULL };
ide_setup_pci_noise(dev, d);
ide_pci_setup_ports(dev, d, &hw[0], &hws[0]);
hw[0].irq = 14;
- return ide_host_add(d, hws, NULL);
+ return ide_host_add(d, hws, 2, NULL);
}
static const struct pci_device_id cs5520_pci_tbl[] = {
IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
.init_chipset = delkin_cb_init_chipset,
+ .chipset = ide_pci,
};
static int __devinit
struct ide_host *host;
unsigned long base;
int rc;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
rc = pci_enable_device(dev);
if (rc) {
ide_std_init_ports(&hw, base + 0x10, base + 0x1e);
hw.irq = dev->irq;
hw.dev = &dev->dev;
- hw.chipset = ide_pci; /* this enables IRQ sharing */
- rc = ide_host_add(&delkin_cb_port_info, hws, &host);
+ rc = ide_host_add(&delkin_cb_port_info, hws, 1, &host);
if (rc)
goto out_disable;
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_generic,
};
-static void __init falconide_setup_ports(hw_regs_t *hw)
+static void __init falconide_setup_ports(struct ide_hw *hw)
{
int i;
hw->irq = IRQ_MFP_IDE;
hw->ack_intr = NULL;
-
- hw->chipset = ide_generic;
}
/*
static int __init falconide_init(void)
{
struct ide_host *host;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
int rc;
if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
falconide_setup_ports(&hw);
- host = ide_host_alloc(&falconide_port_info, hws);
+ host = ide_host_alloc(&falconide_port_info, hws, 1);
if (host == NULL) {
rc = -ENOMEM;
goto err;
return 1;
}
-static void __init gayle_setup_ports(hw_regs_t *hw, unsigned long base,
+static void __init gayle_setup_ports(struct ide_hw *hw, unsigned long base,
unsigned long ctl, unsigned long irq_port,
ide_ack_intr_t *ack_intr)
{
hw->irq = IRQ_AMIGA_PORTS;
hw->ack_intr = ack_intr;
-
- hw->chipset = ide_generic;
}
static const struct ide_port_info gayle_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_SERIALIZE |
IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_generic,
};
/*
unsigned long base, ctrlport, irqport;
ide_ack_intr_t *ack_intr;
int a4000, i, rc;
- hw_regs_t hw[GAYLE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[GAYLE_NUM_HWIFS], *hws[GAYLE_NUM_HWIFS];
if (!MACH_IS_AMIGA)
return -ENODEV;
hws[i] = &hw[i];
}
- rc = ide_host_add(&gayle_port_info, hws, NULL);
+ rc = ide_host_add(&gayle_port_info, hws, i, NULL);
if (rc)
release_mem_region(res_start, res_n);
return -EOPNOTSUPP;
}
-static void icside_setup_ports(hw_regs_t *hw, void __iomem *base,
+static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
struct cardinfo *info, struct expansion_card *ec)
{
unsigned long port = (unsigned long)base + info->dataoffset;
hw->irq = ec->irq;
hw->dev = &ec->dev;
- hw->chipset = ide_acorn;
}
static const struct ide_port_info icside_v5_port_info = {
.host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_acorn,
};
static int __devinit
{
void __iomem *base;
struct ide_host *host;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
int ret;
base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
- host = ide_host_alloc(&icside_v5_port_info, hws);
+ host = ide_host_alloc(&icside_v5_port_info, hws, 1);
if (host == NULL)
return -ENODEV;
.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
.mwdma_mask = ATA_MWDMA2,
.swdma_mask = ATA_SWDMA2,
+ .chipset = ide_acorn,
};
static int __devinit
struct ide_host *host;
unsigned int sel = 0;
int ret;
- hw_regs_t hw[2], *hws[] = { &hw[0], &hw[1], NULL, NULL };
+ struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
struct ide_port_info d = icside_v6_port_info;
ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
- host = ide_host_alloc(&d, hws);
+ host = ide_host_alloc(&d, hws, 2);
if (host == NULL)
return -ENODEV;
.port_ops = &ide_4drives_port_ops,
.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA |
IDE_HFLAG_4DRIVES,
+ .chipset = ide_4drives,
};
static int __init ide_4drives_init(void)
{
unsigned long base = 0x1f0, ctl = 0x3f6;
- hw_regs_t hw, *hws[] = { &hw, &hw, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw, &hw };
if (probe_4drives == 0)
return -ENODEV;
ide_std_init_ports(&hw, base, ctl);
hw.irq = 14;
- hw.chipset = ide_4drives;
- return ide_host_add(&ide_4drives_port_info, hws, NULL);
+ return ide_host_add(&ide_4drives_port_info, hws, 2, NULL);
}
module_init(ide_4drives_init);
EXPORT_SYMBOL_GPL(ide_init_pc);
/*
- * 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.
- */
-static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk,
- struct ide_atapi_pc *pc, struct request *rq)
-{
- blk_rq_init(NULL, rq);
- rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd_flags |= REQ_PREEMPT;
- rq->buffer = (char *)pc;
- rq->rq_disk = disk;
-
- if (pc->req_xfer) {
- rq->data = pc->buf;
- rq->data_len = pc->req_xfer;
- }
-
- memcpy(rq->cmd, pc->c, 12);
- if (drive->media == ide_tape)
- rq->cmd[13] = REQ_IDETAPE_PC1;
-
- drive->hwif->rq = NULL;
-
- elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
-}
-
-/*
* Add a special packet command request to the tail of the request queue,
* and wait for it to be serviced.
*/
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->buffer = (char *)pc;
+ rq->special = (char *)pc;
if (pc->req_xfer) {
- rq->data = pc->buf;
- rq->data_len = pc->req_xfer;
+ error = blk_rq_map_kern(drive->queue, rq, pc->buf, pc->req_xfer,
+ GFP_NOIO);
+ if (error)
+ goto put_req;
}
memcpy(rq->cmd, pc->c, 12);
if (drive->media == ide_tape)
rq->cmd[13] = REQ_IDETAPE_PC1;
error = blk_execute_rq(drive->queue, disk, rq, 0);
+put_req:
blk_put_request(rq);
-
return error;
}
EXPORT_SYMBOL_GPL(ide_queue_pc_tail);
}
EXPORT_SYMBOL_GPL(ide_create_request_sense_cmd);
+void ide_prep_sense(ide_drive_t *drive, struct request *rq)
+{
+ struct request_sense *sense = &drive->sense_data;
+ struct request *sense_rq = &drive->sense_rq;
+ unsigned int cmd_len, sense_len;
+ int err;
+
+ debug_log("%s: enter\n", __func__);
+
+ switch (drive->media) {
+ case ide_floppy:
+ cmd_len = 255;
+ sense_len = 18;
+ break;
+ case ide_tape:
+ cmd_len = 20;
+ sense_len = 20;
+ break;
+ default:
+ cmd_len = 18;
+ sense_len = 18;
+ }
+
+ BUG_ON(sense_len > sizeof(*sense));
+
+ if (blk_sense_request(rq) || drive->sense_rq_armed)
+ return;
+
+ memset(sense, 0, sizeof(*sense));
+
+ blk_rq_init(rq->q, sense_rq);
+
+ err = blk_rq_map_kern(drive->queue, sense_rq, sense, sense_len,
+ GFP_NOIO);
+ if (unlikely(err)) {
+ if (printk_ratelimit())
+ printk(KERN_WARNING "%s: failed to map sense buffer\n",
+ drive->name);
+ return;
+ }
+
+ sense_rq->rq_disk = rq->rq_disk;
+ sense_rq->cmd[0] = GPCMD_REQUEST_SENSE;
+ sense_rq->cmd[4] = cmd_len;
+ sense_rq->cmd_type = REQ_TYPE_SENSE;
+ sense_rq->cmd_flags |= REQ_PREEMPT;
+
+ if (drive->media == ide_tape)
+ sense_rq->cmd[13] = REQ_IDETAPE_PC1;
+
+ drive->sense_rq_armed = true;
+}
+EXPORT_SYMBOL_GPL(ide_prep_sense);
+
+int ide_queue_sense_rq(ide_drive_t *drive, void *special)
+{
+ /* deferred failure from ide_prep_sense() */
+ if (!drive->sense_rq_armed) {
+ printk(KERN_WARNING "%s: failed queue sense request\n",
+ drive->name);
+ return -ENOMEM;
+ }
+
+ drive->sense_rq.special = special;
+ drive->sense_rq_armed = false;
+
+ drive->hwif->rq = NULL;
+
+ elv_add_request(drive->queue, &drive->sense_rq,
+ ELEVATOR_INSERT_FRONT, 0);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ide_queue_sense_rq);
+
/*
* 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.
+ * We queue a request sense packet command at the head of the request
+ * queue.
*/
-void ide_retry_pc(ide_drive_t *drive, struct gendisk *disk)
+void ide_retry_pc(ide_drive_t *drive)
{
- struct request *rq = &drive->request_sense_rq;
+ struct request *sense_rq = &drive->sense_rq;
struct ide_atapi_pc *pc = &drive->request_sense_pc;
(void)ide_read_error(drive);
- ide_create_request_sense_cmd(drive, pc);
+
+ /* init pc from sense_rq */
+ ide_init_pc(pc);
+ memcpy(pc->c, sense_rq->cmd, 12);
+ pc->buf = bio_data(sense_rq->bio); /* pointer to mapped address */
+ pc->req_xfer = sense_rq->data_len;
+
if (drive->media == ide_tape)
set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
- ide_queue_pc_head(drive, disk, pc, rq);
+
+ if (ide_queue_sense_rq(drive, pc))
+ ide_complete_rq(drive, -EIO, blk_rq_bytes(drive->hwif->rq));
}
EXPORT_SYMBOL_GPL(ide_retry_pc);
struct ide_cmd *cmd = &hwif->cmd;
struct request *rq = hwif->rq;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- xfer_func_t *xferfunc;
unsigned int timeout, done;
u16 bcount;
u8 stat, ireason, dsc = 0;
drive->name, rq_data_dir(pc->rq)
? "write" : "read");
pc->flags |= PC_FLAG_DMA_ERROR;
- } else {
+ } else
pc->xferred = pc->req_xfer;
- if (drive->pc_update_buffers)
- drive->pc_update_buffers(drive, pc);
- }
debug_log("%s: DMA finished\n", drive->name);
}
debug_log("[cmd %x]: check condition\n", rq->cmd[0]);
/* Retry operation */
- ide_retry_pc(drive, rq->rq_disk);
+ ide_retry_pc(drive);
/* queued, but not started */
return ide_stopped;
if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) && (stat & ATA_DSC) == 0)
dsc = 1;
+ /*
+ * ->pc_callback() might change rq->data_len for
+ * residual count, cache total length.
+ */
+ done = blk_rq_bytes(rq);
+
/* Command finished - Call the callback function */
uptodate = drive->pc_callback(drive, dsc);
if (blk_special_request(rq)) {
rq->errors = 0;
- done = blk_rq_bytes(rq);
error = 0;
} else {
rq->errors = -EIO;
}
- if (drive->media == ide_tape)
- done = ide_rq_bytes(rq); /* FIXME */
- else
- done = blk_rq_bytes(rq);
-
error = uptodate ? 0 : -EIO;
}
return ide_do_reset(drive);
}
- xferfunc = write ? tp_ops->output_data : tp_ops->input_data;
-
- if (drive->media == ide_floppy && pc->buf == NULL) {
- done = min_t(unsigned int, bcount, cmd->nleft);
- ide_pio_bytes(drive, cmd, write, done);
- } else if (drive->media == ide_tape && pc->bh) {
- done = drive->pc_io_buffers(drive, pc, bcount, write);
- } else {
- done = min_t(unsigned int, bcount, pc->req_xfer - pc->xferred);
- xferfunc(drive, NULL, pc->cur_pos, done);
- }
+ done = min_t(unsigned int, bcount, cmd->nleft);
+ ide_pio_bytes(drive, cmd, write, done);
- /* Update the current position */
+ /* Update transferred byte count */
pc->xferred += done;
- pc->cur_pos += done;
bcount -= done;
/* We haven't transferred any data yet */
pc->xferred = 0;
- pc->cur_pos = pc->buf;
valid_tf = IDE_VALID_DEVICE;
bcount = ((drive->media == ide_tape) ?
ide_cd_log_error(drive->name, failed_command, sense);
}
-static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
- struct request *failed_command)
-{
- struct cdrom_info *info = drive->driver_data;
- struct request *rq = &drive->request_sense_rq;
-
- ide_debug_log(IDE_DBG_SENSE, "enter");
-
- if (sense == NULL)
- sense = &info->sense_data;
-
- /* stuff the sense request in front of our current request */
- blk_rq_init(NULL, rq);
- rq->cmd_type = REQ_TYPE_ATA_PC;
- rq->rq_disk = info->disk;
-
- rq->data = sense;
- rq->cmd[0] = GPCMD_REQUEST_SENSE;
- rq->cmd[4] = 18;
- rq->data_len = 18;
-
- rq->cmd_type = REQ_TYPE_SENSE;
- rq->cmd_flags |= REQ_PREEMPT;
-
- /* NOTE! Save the failed command in "rq->buffer" */
- rq->buffer = (void *) failed_command;
-
- if (failed_command)
- ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x",
- failed_command->cmd[0]);
-
- drive->hwif->rq = NULL;
-
- elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
-}
-
static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
{
/*
- * For REQ_TYPE_SENSE, "rq->buffer" points to the original
- * failed request
+ * For REQ_TYPE_SENSE, "rq->special" points to the original
+ * failed request. Also, the sense data should be read
+ * directly from rq which might be different from the original
+ * sense buffer if it got copied during mapping.
*/
- struct request *failed = (struct request *)rq->buffer;
- struct cdrom_info *info = drive->driver_data;
- void *sense = &info->sense_data;
+ struct request *failed = (struct request *)rq->special;
+ void *sense = bio_data(rq->bio);
if (failed) {
if (failed->sense) {
+ /*
+ * Sense is always read into drive->sense_data.
+ * Copy back if the failed request has its
+ * sense pointer set.
+ */
+ memcpy(failed->sense, sense, 18);
sense = failed->sense;
failed->sense_len = rq->sense_len;
}
/* if we got a CHECK_CONDITION status, queue a request sense command */
if (stat & ATA_ERR)
- cdrom_queue_request_sense(drive, NULL, NULL);
+ return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
return 1;
end_request:
hwif->rq = NULL;
- cdrom_queue_request_sense(drive, rq->sense, rq);
- return 1;
+ return ide_queue_sense_rq(drive, rq) ? 2 : 1;
} else
return 2;
}
* and some drives don't send them. Sigh.
*/
if (rq->cmd[0] == GPCMD_REQUEST_SENSE &&
- cmd->nleft > 0 && cmd->nleft <= 5) {
- unsigned int ofs = cmd->nbytes - cmd->nleft;
-
- while (cmd->nleft > 0) {
- *((u8 *)rq->data + ofs++) = 0;
- cmd->nleft--;
- }
- }
+ cmd->nleft > 0 && cmd->nleft <= 5)
+ cmd->nleft = 0;
}
int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
rq->cmd_flags |= cmd_flags;
rq->timeout = timeout;
if (buffer) {
- rq->data = buffer;
- rq->data_len = *bufflen;
+ error = blk_rq_map_kern(drive->queue, rq, buffer,
+ *bufflen, GFP_NOIO);
+ if (error) {
+ blk_put_request(rq);
+ return error;
+ }
}
error = blk_execute_rq(drive->queue, info->disk, rq, 0);
drive->dma = 0;
/* sg request */
- if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
+ if (rq->bio) {
struct request_queue *q = drive->queue;
+ char *buf = bio_data(rq->bio);
unsigned int alignment;
- char *buf;
-
- if (rq->bio)
- buf = bio_data(rq->bio);
- else
- buf = rq->data;
drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
goto out_end;
}
+ /* prepare sense request for this command */
+ ide_prep_sense(drive, rq);
+
memset(&cmd, 0, sizeof(cmd));
if (rq_data_dir(rq))
struct atapi_toc *toc;
- /* The result of the last successful request sense command
- on this device. */
- struct request_sense sense_data;
-
u8 max_speed; /* Max speed of the drive. */
u8 current_speed; /* Current speed of the drive. */
.port_ops = &idecs_port_ops,
.host_flags = IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_pci,
};
static struct ide_host *idecs_register(unsigned long io, unsigned long ctl,
struct ide_host *host;
ide_hwif_t *hwif;
int i, rc;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
if (!request_region(io, 8, DRV_NAME)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, io, ctl);
hw.irq = irq;
- hw.chipset = ide_pci;
hw.dev = &handle->dev;
- rc = ide_host_add(&idecs_port_info, hws, &host);
+ rc = ide_host_add(&idecs_port_info, hws, 1, &host);
if (rc)
goto out_release;
cmd->protocol = ATA_PROT_NODATA;
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
- rq->cmd_flags |= REQ_SOFTBARRIER;
rq->special = cmd;
}
if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
return -EINVAL;
- if (drive->special.b.set_multmode)
+ if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
return -EBUSY;
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
drive->mult_req = arg;
- drive->special.b.set_multmode = 1;
+ drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
error = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
/*
* un-busy drive etc and make sure request is sane
*/
-
rq = hwif->rq;
- if (!rq)
- goto out;
-
- hwif->rq = NULL;
-
- rq->errors = 0;
-
- if (!rq->bio)
- goto out;
-
- rq->sector = rq->bio->bi_sector;
- rq->current_nr_sectors = bio_iovec(rq->bio)->bv_len >> 9;
- rq->hard_cur_sectors = rq->current_nr_sectors;
- rq->buffer = bio_data(rq->bio);
-out:
+ if (rq) {
+ hwif->rq = NULL;
+ rq->errors = 0;
+ }
return ret;
}
}
if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
- drive->special.b.recalibrate = 1;
+ drive->special_flags |= IDE_SFLAG_RECALIBRATE;
++rq->errors;
{
int legacy = (drive->id[ATA_ID_CFS_ENABLE_2] & 0x0400) ? 0 : 1;
- drive->special.all = 0;
- drive->special.b.set_geometry = legacy;
- drive->special.b.recalibrate = legacy;
+ drive->special_flags =
+ legacy ? (IDE_SFLAG_SET_GEOMETRY | IDE_SFLAG_RECALIBRATE) : 0;
drive->mult_count = 0;
drive->dev_flags &= ~IDE_DFLAG_PARKED;
drive->mult_req = 0;
if (drive->mult_req != drive->mult_count)
- drive->special.b.set_multmode = 1;
+ drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
}
static void pre_reset(ide_drive_t *drive)
drive->pc = pc;
if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
+ unsigned int done = blk_rq_bytes(drive->hwif->rq);
+
if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
ide_floppy_report_error(floppy, pc);
+
/* Giving up */
pc->error = IDE_DRV_ERROR_GENERAL;
drive->failed_pc = NULL;
drive->pc_callback(drive, 0);
+ ide_complete_rq(drive, -EIO, done);
return ide_stopped;
}
ide_init_pc(pc);
memcpy(pc->c, rq->cmd, sizeof(pc->c));
pc->rq = rq;
- if (rq->data_len && rq_data_dir(rq) == WRITE)
- pc->flags |= PC_FLAG_WRITING;
- pc->buf = rq->data;
- if (rq->bio)
+ if (rq->data_len) {
pc->flags |= PC_FLAG_DMA_OK;
- /*
- * possibly problematic, doesn't look like ide-floppy correctly
- * handled scattered requests if dma fails...
- */
+ if (rq_data_dir(rq) == WRITE)
+ pc->flags |= PC_FLAG_WRITING;
+ }
+ /* pio will be performed by ide_pio_bytes() which handles sg fine */
+ pc->buf = NULL;
pc->req_xfer = pc->buf_size = rq->data_len;
}
}
pc = &floppy->queued_pc;
idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block);
- } else if (blk_special_request(rq)) {
- pc = (struct ide_atapi_pc *) rq->buffer;
+ } else if (blk_special_request(rq) || blk_sense_request(rq)) {
+ pc = (struct ide_atapi_pc *)rq->special;
} else if (blk_pc_request(rq)) {
pc = &floppy->queued_pc;
idefloppy_blockpc_cmd(floppy, pc, rq);
goto out_end;
}
+ ide_prep_sense(drive, rq);
+
memset(&cmd, 0, sizeof(cmd));
if (rq_data_dir(rq))
static const struct ide_port_info ide_generic_port_info = {
.host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
#ifdef CONFIG_ARM
static int __init ide_generic_init(void)
{
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
unsigned long io_addr;
int i, rc = 0, primary = 0, secondary = 0;
#else
hw.irq = legacy_irqs[i];
#endif
- hw.chipset = ide_generic;
-
- rc = ide_host_add(&ide_generic_port_info, hws, NULL);
+ rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL);
if (rc) {
release_region(io_addr + 0x206, 1);
release_region(io_addr, 8);
#define H8300_IDE_GAP (2)
-static inline void hw_setup(hw_regs_t *hw)
+static inline void hw_setup(struct ide_hw *hw)
{
int i;
- memset(hw, 0, sizeof(hw_regs_t));
+ memset(hw, 0, sizeof(*hw));
for (i = 0; i <= 7; i++)
hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
- hw->chipset = ide_generic;
}
static const struct ide_port_info h8300_port_info = {
.tp_ops = &h8300_tp_ops,
.host_flags = IDE_HFLAG_NO_IO_32BIT | IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
static int __init h8300_ide_init(void)
{
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
hw_setup(&hw);
- return ide_host_add(&h8300_port_info, hws, NULL);
+ return ide_host_add(&h8300_port_info, hws, 1, NULL);
out_busy:
printk(KERN_ERR "ide-h8300: IDE I/F resource already used.\n");
tf->command = ATA_CMD_SET_MULTI;
}
-static ide_startstop_t ide_disk_special(ide_drive_t *drive)
+/**
+ * do_special - issue some special commands
+ * @drive: drive the command is for
+ *
+ * do_special() is used to issue ATA_CMD_INIT_DEV_PARAMS,
+ * ATA_CMD_RESTORE and ATA_CMD_SET_MULTI commands to a drive.
+ */
+
+static ide_startstop_t do_special(ide_drive_t *drive)
{
- special_t *s = &drive->special;
struct ide_cmd cmd;
+#ifdef DEBUG
+ printk(KERN_DEBUG "%s: %s: 0x%02x\n", drive->name, __func__,
+ drive->special_flags);
+#endif
+ if (drive->media != ide_disk) {
+ drive->special_flags = 0;
+ drive->mult_req = 0;
+ return ide_stopped;
+ }
+
memset(&cmd, 0, sizeof(cmd));
cmd.protocol = ATA_PROT_NODATA;
- if (s->b.set_geometry) {
- s->b.set_geometry = 0;
+ if (drive->special_flags & IDE_SFLAG_SET_GEOMETRY) {
+ drive->special_flags &= ~IDE_SFLAG_SET_GEOMETRY;
ide_tf_set_specify_cmd(drive, &cmd.tf);
- } else if (s->b.recalibrate) {
- s->b.recalibrate = 0;
+ } else if (drive->special_flags & IDE_SFLAG_RECALIBRATE) {
+ drive->special_flags &= ~IDE_SFLAG_RECALIBRATE;
ide_tf_set_restore_cmd(drive, &cmd.tf);
- } else if (s->b.set_multmode) {
- s->b.set_multmode = 0;
+ } else if (drive->special_flags & IDE_SFLAG_SET_MULTMODE) {
+ drive->special_flags &= ~IDE_SFLAG_SET_MULTMODE;
ide_tf_set_setmult_cmd(drive, &cmd.tf);
- } else if (s->all) {
- int special = s->all;
- s->all = 0;
- printk(KERN_ERR "%s: bad special flag: 0x%02x\n", drive->name, special);
- return ide_stopped;
- }
+ } else
+ BUG();
cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
return ide_started;
}
-/**
- * do_special - issue some special commands
- * @drive: drive the command is for
- *
- * do_special() is used to issue ATA_CMD_INIT_DEV_PARAMS,
- * ATA_CMD_RESTORE and ATA_CMD_SET_MULTI commands to a drive.
- *
- * It used to do much more, but has been scaled back.
- */
-
-static ide_startstop_t do_special (ide_drive_t *drive)
-{
- special_t *s = &drive->special;
-
-#ifdef DEBUG
- printk("%s: do_special: 0x%02x\n", drive->name, s->all);
-#endif
- if (drive->media == ide_disk)
- return ide_disk_special(drive);
-
- s->all = 0;
- drive->mult_req = 0;
- return ide_stopped;
-}
-
void ide_map_sg(ide_drive_t *drive, struct ide_cmd *cmd)
{
ide_hwif_t *hwif = drive->hwif;
struct scatterlist *sg = hwif->sg_table;
struct request *rq = cmd->rq;
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- sg_init_one(sg, rq->buffer, rq->nr_sectors * SECTOR_SIZE);
- cmd->sg_nents = 1;
- } else if (!rq->bio) {
- sg_init_one(sg, rq->data, rq->data_len);
- cmd->sg_nents = 1;
- } else
- cmd->sg_nents = blk_rq_map_sg(drive->queue, rq, sg);
+ cmd->sg_nents = blk_rq_map_sg(drive->queue, rq, sg);
}
EXPORT_SYMBOL_GPL(ide_map_sg);
printk(KERN_ERR "%s: drive not ready for command\n", drive->name);
return startstop;
}
- if (!drive->special.all) {
+
+ if (drive->special_flags == 0) {
struct ide_driver *drv;
/*
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
return execute_drive_cmd(drive, rq);
else if (blk_pm_request(rq)) {
- struct request_pm_state *pm = rq->data;
+ struct request_pm_state *pm = rq->special;
#ifdef DEBUG_PM
printk("%s: start_power_step(step: %d)\n",
drive->name, pm->pm_step);
spin_unlock_irq(q->queue_lock);
+ /* HLD do_request() callback might sleep, make sure it's okay */
+ might_sleep();
+
if (ide_lock_host(host, hwif))
goto plug_device_2;
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->cmd_len = 1;
rq->cmd[0] = REQ_DRIVE_RESET;
- rq->cmd_flags |= REQ_SOFTBARRIER;
if (blk_execute_rq(drive->queue, NULL, rq, 1))
ret = rq->errors;
blk_put_request(rq);
#include <linux/kernel.h>
#include <linux/ide.h>
-static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
+static void ide_legacy_init_one(struct ide_hw **hws, struct ide_hw *hw,
u8 port_no, const struct ide_port_info *d,
unsigned long config)
{
ide_std_init_ports(hw, base, ctl);
hw->irq = irq;
- hw->chipset = d->chipset;
hw->config = config;
hws[port_no] = hw;
int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
{
- hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[2], *hws[] = { NULL, NULL };
memset(&hw, 0, sizeof(hw));
(d->host_flags & IDE_HFLAG_SINGLE))
return -ENOENT;
- return ide_host_add(d, hws, NULL);
+ return ide_host_add(d, hws, 2, NULL);
}
EXPORT_SYMBOL_GPL(ide_legacy_device_add);
start_queue = 1;
spin_unlock_irq(&hwif->lock);
- if (start_queue) {
- spin_lock_irq(q->queue_lock);
- blk_start_queueing(q);
- spin_unlock_irq(q->queue_lock);
- }
+ if (start_queue)
+ blk_run_queue(q);
return;
}
spin_unlock_irq(&hwif->lock);
ide_hwif_t *hwif = drive->hwif;
struct request *rq;
struct request_pm_state rqpm;
- struct ide_cmd cmd;
int ret;
/* call ACPI _GTM only once */
ide_acpi_get_timing(hwif);
memset(&rqpm, 0, sizeof(rqpm));
- memset(&cmd, 0, sizeof(cmd));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_SUSPEND;
- rq->special = &cmd;
- rq->data = &rqpm;
+ rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
ide_hwif_t *hwif = drive->hwif;
struct request *rq;
struct request_pm_state rqpm;
- struct ide_cmd cmd;
int err;
/* call ACPI _PS0 / _STM only once */
ide_acpi_exec_tfs(drive);
memset(&rqpm, 0, sizeof(rqpm));
- memset(&cmd, 0, sizeof(cmd));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_RESUME;
rq->cmd_flags |= REQ_PREEMPT;
- rq->special = &cmd;
- rq->data = &rqpm;
+ rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
{
- struct request_pm_state *pm = rq->data;
+ struct request_pm_state *pm = rq->special;
#ifdef DEBUG_PM
printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
- struct request_pm_state *pm = rq->data;
- struct ide_cmd *cmd = rq->special;
-
- memset(cmd, 0, sizeof(*cmd));
+ struct request_pm_state *pm = rq->special;
+ struct ide_cmd cmd = { };
switch (pm->pm_step) {
case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
return ide_stopped;
}
if (ata_id_flush_ext_enabled(drive->id))
- cmd->tf.command = ATA_CMD_FLUSH_EXT;
+ cmd.tf.command = ATA_CMD_FLUSH_EXT;
else
- cmd->tf.command = ATA_CMD_FLUSH;
+ cmd.tf.command = ATA_CMD_FLUSH;
goto out_do_tf;
case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
- cmd->tf.command = ATA_CMD_STANDBYNOW1;
+ cmd.tf.command = ATA_CMD_STANDBYNOW1;
goto out_do_tf;
case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
ide_set_max_pio(drive);
ide_complete_power_step(drive, rq);
return ide_stopped;
case IDE_PM_IDLE: /* Resume step 2 (idle) */
- cmd->tf.command = ATA_CMD_IDLEIMMEDIATE;
+ cmd.tf.command = ATA_CMD_IDLEIMMEDIATE;
goto out_do_tf;
case IDE_PM_RESTORE_DMA: /* Resume step 3 (restore DMA) */
/*
return ide_stopped;
out_do_tf:
- cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd->valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
- cmd->protocol = ATA_PROT_NODATA;
+ cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+ cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
+ cmd.protocol = ATA_PROT_NODATA;
- return do_rw_taskfile(drive, cmd);
+ return do_rw_taskfile(drive, &cmd);
}
/**
void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
- struct request_pm_state *pm = rq->data;
+ struct request_pm_state *pm = rq->special;
unsigned long flags;
ide_complete_power_step(drive, rq);
void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
- struct request_pm_state *pm = rq->data;
+ struct request_pm_state *pm = rq->special;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == IDE_PM_START_SUSPEND)
static const struct ide_port_info ide_pnp_port_info = {
.host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
struct ide_host *host;
unsigned long base, ctl;
int rc;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
memset(&hw, 0, sizeof(hw));
ide_std_init_ports(&hw, base, ctl);
hw.irq = pnp_irq(dev, 0);
- hw.chipset = ide_generic;
- rc = ide_host_add(&ide_pnp_port_info, hws, &host);
+ rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
if (rc)
goto out;
drive->mult_req = id[ATA_ID_MULTSECT] & 0xff;
if (drive->mult_req)
- drive->special.b.set_multmode = 1;
+ drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
}
}
if (port_ops && port_ops->init_dev)
port_ops->init_dev(drive);
}
+
+ ide_port_for_each_dev(i, drive, hwif) {
+ /*
+ * default to PIO Mode 0 before we figure out
+ * the most suited mode for the attached device
+ */
+ if (port_ops && port_ops->set_pio_mode)
+ port_ops->set_pio_mode(drive, 0);
+ }
}
static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
{
hwif->channel = port;
- if (d->chipset)
- hwif->chipset = d->chipset;
+ hwif->chipset = d->chipset ? d->chipset : ide_pci;
if (d->init_iops)
d->init_iops(hwif);
drive->hwif = hwif;
drive->ready_stat = ATA_DRDY;
drive->bad_wstat = BAD_W_STAT;
- drive->special.b.recalibrate = 1;
- drive->special.b.set_geometry = 1;
+ drive->special_flags = IDE_SFLAG_RECALIBRATE |
+ IDE_SFLAG_SET_GEOMETRY;
drive->name[0] = 'h';
drive->name[1] = 'd';
drive->name[2] = 'a' + j;
ide_port_init_devices_data(hwif);
}
-static void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
+static void ide_init_port_hw(ide_hwif_t *hwif, struct ide_hw *hw)
{
memcpy(&hwif->io_ports, &hw->io_ports, sizeof(hwif->io_ports));
hwif->irq = hw->irq;
- hwif->chipset = hw->chipset;
hwif->dev = hw->dev;
hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
hwif->ack_intr = hw->ack_intr;
return -ENOMEM;
}
-struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws)
+struct ide_host *ide_host_alloc(const struct ide_port_info *d,
+ struct ide_hw **hws, unsigned int n_ports)
{
struct ide_host *host;
struct device *dev = hws[0] ? hws[0]->dev : NULL;
if (host == NULL)
return NULL;
- for (i = 0; i < MAX_HOST_PORTS; i++) {
+ for (i = 0; i < n_ports; i++) {
ide_hwif_t *hwif;
int idx;
}
int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
- hw_regs_t **hws)
+ struct ide_hw **hws)
{
ide_hwif_t *hwif, *mate = NULL;
int i, j = 0;
}
EXPORT_SYMBOL_GPL(ide_host_register);
-int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws,
- struct ide_host **hostp)
+int ide_host_add(const struct ide_port_info *d, struct ide_hw **hws,
+ unsigned int n_ports, struct ide_host **hostp)
{
struct ide_host *host;
int rc;
- host = ide_host_alloc(d, hws);
+ host = ide_host_alloc(d, hws, n_ports);
if (host == NULL)
return -ENOMEM;
IDETAPE_DIR_WRITE = (1 << 2),
};
-struct idetape_bh {
- u32 b_size;
- atomic_t b_count;
- struct idetape_bh *b_reqnext;
- char *b_data;
-};
-
/* Tape door status */
#define DOOR_UNLOCKED 0
#define DOOR_LOCKED 1
/* Data buffer size chosen based on the tape's recommendation */
int buffer_size;
- /* merge buffer */
- struct idetape_bh *merge_bh;
- /* size of the merge buffer */
- int merge_bh_size;
- /* pointer to current buffer head within the merge buffer */
- struct idetape_bh *bh;
- char *b_data;
- int b_count;
-
- int pages_per_buffer;
- /* Wasted space in each stage */
- int excess_bh_size;
+ /* Staging buffer of buffer_size bytes */
+ void *buf;
+ /* The read/write cursor */
+ void *cur;
+ /* The number of valid bytes in buf */
+ size_t valid;
/* Measures average tape speed */
unsigned long avg_time;
return tape;
}
-static int idetape_input_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount)
-{
- struct idetape_bh *bh = pc->bh;
- int count;
-
- while (bcount) {
- if (bh == NULL)
- break;
- count = min(
- (unsigned int)(bh->b_size - atomic_read(&bh->b_count)),
- bcount);
- 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);
- if (atomic_read(&bh->b_count) == bh->b_size) {
- bh = bh->b_reqnext;
- if (bh)
- atomic_set(&bh->b_count, 0);
- }
- }
-
- pc->bh = bh;
-
- return bcount;
-}
-
-static int idetape_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount)
-{
- struct idetape_bh *bh = pc->bh;
- int count;
-
- while (bcount) {
- if (bh == NULL)
- break;
- count = min((unsigned int)pc->b_count, (unsigned int)bcount);
- drive->hwif->tp_ops->output_data(drive, NULL, pc->b_data, count);
- bcount -= count;
- pc->b_data += count;
- pc->b_count -= count;
- if (!pc->b_count) {
- bh = bh->b_reqnext;
- pc->bh = bh;
- if (bh) {
- pc->b_data = bh->b_data;
- pc->b_count = atomic_read(&bh->b_count);
- }
- }
- }
-
- return bcount;
-}
-
-static void idetape_update_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc)
-{
- struct idetape_bh *bh = pc->bh;
- int count;
- unsigned int bcount = pc->xferred;
-
- if (pc->flags & PC_FLAG_WRITING)
- return;
- while (bcount) {
- if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
- __func__);
- return;
- }
- count = min((unsigned int)bh->b_size, (unsigned int)bcount);
- atomic_set(&bh->b_count, count);
- if (atomic_read(&bh->b_count) == bh->b_size)
- bh = bh->b_reqnext;
- bcount -= count;
- }
- pc->bh = bh;
-}
-
/*
* called on each failed packet command retry to analyze the request sense. We
* currently do not utilize this information.
pc->c[0], tape->sense_key, tape->asc, tape->ascq);
/* Correct pc->xferred by asking the tape. */
- if (pc->flags & PC_FLAG_DMA_ERROR) {
+ if (pc->flags & PC_FLAG_DMA_ERROR)
pc->xferred = pc->req_xfer -
tape->blk_size *
get_unaligned_be32(&sense[3]);
- idetape_update_buffers(drive, pc);
- }
/*
* If error was the result of a zero-length read or write command,
}
}
-/* Free data buffers completely. */
-static void ide_tape_kfree_buffer(idetape_tape_t *tape)
-{
- struct idetape_bh *prev_bh, *bh = tape->merge_bh;
-
- while (bh) {
- u32 size = bh->b_size;
-
- while (size) {
- unsigned int order = fls(size >> PAGE_SHIFT)-1;
-
- if (bh->b_data)
- free_pages((unsigned long)bh->b_data, order);
-
- size &= (order-1);
- bh->b_data += (1 << order) * PAGE_SIZE;
- }
- prev_bh = bh;
- bh = bh->b_reqnext;
- kfree(prev_bh);
- }
-}
-
static void ide_tape_handle_dsc(ide_drive_t *);
static int ide_tape_callback(ide_drive_t *drive, int dsc)
}
tape->first_frame += blocks;
- rq->current_nr_sectors -= blocks;
+ rq->data_len -= blocks * tape->blk_size;
if (pc->error) {
uptodate = 0;
idetape_postpone_request(drive);
}
-static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount, int write)
-{
- unsigned int bleft;
-
- if (write)
- bleft = idetape_output_buffers(drive, pc, bcount);
- else
- bleft = idetape_input_buffers(drive, pc, bcount);
-
- return bcount - bleft;
-}
-
/*
* Packet Command Interface
*
if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
(pc->flags & PC_FLAG_ABORT)) {
+ unsigned int done = blk_rq_bytes(drive->hwif->rq);
+
/*
* We will "abort" retrying a packet command in case legitimate
* error code was received (crossing a filemark, or end of the
/* Giving up */
pc->error = IDE_DRV_ERROR_GENERAL;
}
+
drive->failed_pc = NULL;
drive->pc_callback(drive, 0);
+ ide_complete_rq(drive, -EIO, done);
return ide_stopped;
}
debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]);
printk(KERN_ERR "ide-tape: %s: I/O error, ",
tape->name);
/* Retry operation */
- ide_retry_pc(drive, tape->disk);
+ ide_retry_pc(drive);
return ide_stopped;
}
pc->error = 0;
struct ide_atapi_pc *pc, struct request *rq,
u8 opcode)
{
- struct idetape_bh *bh = (struct idetape_bh *)rq->special;
- unsigned int length = rq->current_nr_sectors;
+ unsigned int length = rq->nr_sectors;
ide_init_pc(pc);
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
- pc->bh = bh;
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_OK;
- if (opcode == READ_6) {
+ if (opcode == READ_6)
pc->c[0] = READ_6;
- atomic_set(&bh->b_count, 0);
- } else if (opcode == WRITE_6) {
+ 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);
struct ide_cmd cmd;
u8 stat;
- 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);
+ debug_log(DBG_SENSE, "sector: %llu, nr_sectors: %lu\n",
+ (unsigned long long)rq->sector, rq->nr_sectors);
- if (!blk_special_request(rq)) {
+ if (!(blk_special_request(rq) || blk_sense_request(rq))) {
/* We do not support buffer cache originated requests. */
printk(KERN_NOTICE "ide-tape: %s: Unsupported request in "
"request queue (%d)\n", drive->name, rq->cmd_type);
goto out;
}
if (rq->cmd[13] & REQ_IDETAPE_PC1) {
- pc = (struct ide_atapi_pc *) rq->buffer;
+ pc = (struct ide_atapi_pc *)rq->special;
rq->cmd[13] &= ~(REQ_IDETAPE_PC1);
rq->cmd[13] |= REQ_IDETAPE_PC2;
goto out;
BUG();
out:
+ /* prepare sense request for this command */
+ ide_prep_sense(drive, rq);
+
memset(&cmd, 0, sizeof(cmd));
if (rq_data_dir(rq))
cmd.rq = rq;
- return ide_tape_issue_pc(drive, &cmd, pc);
-}
-
-/*
- * The function below uses __get_free_pages to allocate a data buffer of size
- * tape->buffer_size (or a bit more). We attempt to combine sequential pages as
- * much as possible.
- *
- * It returns a pointer to the newly allocated buffer, or NULL in case of
- * failure.
- */
-static struct idetape_bh *ide_tape_kmalloc_buffer(idetape_tape_t *tape,
- int full, int clear)
-{
- struct idetape_bh *prev_bh, *bh, *merge_bh;
- int pages = tape->pages_per_buffer;
- unsigned int order, b_allocd;
- char *b_data = NULL;
-
- merge_bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL);
- bh = merge_bh;
- if (bh == NULL)
- goto abort;
-
- order = fls(pages) - 1;
- bh->b_data = (char *) __get_free_pages(GFP_KERNEL, order);
- if (!bh->b_data)
- goto abort;
- b_allocd = (1 << order) * PAGE_SIZE;
- pages &= (order-1);
-
- if (clear)
- memset(bh->b_data, 0, b_allocd);
- bh->b_reqnext = NULL;
- bh->b_size = b_allocd;
- atomic_set(&bh->b_count, full ? bh->b_size : 0);
-
- while (pages) {
- order = fls(pages) - 1;
- b_data = (char *) __get_free_pages(GFP_KERNEL, order);
- if (!b_data)
- goto abort;
- b_allocd = (1 << order) * PAGE_SIZE;
-
- if (clear)
- memset(b_data, 0, b_allocd);
-
- /* newly allocated page frames below buffer header or ...*/
- if (bh->b_data == b_data + b_allocd) {
- bh->b_size += b_allocd;
- bh->b_data -= b_allocd;
- if (full)
- atomic_add(b_allocd, &bh->b_count);
- continue;
- }
- /* they are above the header */
- if (b_data == bh->b_data + bh->b_size) {
- bh->b_size += b_allocd;
- if (full)
- atomic_add(b_allocd, &bh->b_count);
- continue;
- }
- prev_bh = bh;
- bh = kmalloc(sizeof(struct idetape_bh), GFP_KERNEL);
- if (!bh) {
- free_pages((unsigned long) b_data, order);
- goto abort;
- }
- bh->b_reqnext = NULL;
- bh->b_data = b_data;
- bh->b_size = b_allocd;
- atomic_set(&bh->b_count, full ? bh->b_size : 0);
- prev_bh->b_reqnext = bh;
-
- pages &= (order-1);
- }
-
- bh->b_size -= tape->excess_bh_size;
- if (full)
- atomic_sub(tape->excess_bh_size, &bh->b_count);
- return merge_bh;
-abort:
- ide_tape_kfree_buffer(tape);
- return NULL;
-}
+ ide_init_sg_cmd(&cmd, pc->req_xfer);
+ ide_map_sg(drive, &cmd);
-static int idetape_copy_stage_from_user(idetape_tape_t *tape,
- const char __user *buf, int n)
-{
- struct idetape_bh *bh = tape->bh;
- int count;
- int ret = 0;
-
- while (n) {
- if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
- __func__);
- return 1;
- }
- count = min((unsigned int)
- (bh->b_size - atomic_read(&bh->b_count)),
- (unsigned int)n);
- if (copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf,
- count))
- ret = 1;
- n -= count;
- atomic_add(count, &bh->b_count);
- buf += count;
- if (atomic_read(&bh->b_count) == bh->b_size) {
- bh = bh->b_reqnext;
- if (bh)
- atomic_set(&bh->b_count, 0);
- }
- }
- tape->bh = bh;
- return ret;
-}
-
-static int idetape_copy_stage_to_user(idetape_tape_t *tape, char __user *buf,
- int n)
-{
- struct idetape_bh *bh = tape->bh;
- int count;
- int ret = 0;
-
- while (n) {
- if (bh == NULL) {
- printk(KERN_ERR "ide-tape: bh == NULL in %s\n",
- __func__);
- return 1;
- }
- count = min(tape->b_count, n);
- if (copy_to_user(buf, tape->b_data, count))
- ret = 1;
- n -= count;
- tape->b_data += count;
- tape->b_count -= count;
- buf += count;
- if (!tape->b_count) {
- bh = bh->b_reqnext;
- tape->bh = bh;
- if (bh) {
- tape->b_data = bh->b_data;
- tape->b_count = atomic_read(&bh->b_count);
- }
- }
- }
- return ret;
-}
-
-static void idetape_init_merge_buffer(idetape_tape_t *tape)
-{
- struct idetape_bh *bh = tape->merge_bh;
- tape->bh = tape->merge_bh;
-
- if (tape->chrdev_dir == IDETAPE_DIR_WRITE)
- atomic_set(&bh->b_count, 0);
- else {
- tape->b_data = bh->b_data;
- tape->b_count = atomic_read(&bh->b_count);
- }
+ return ide_tape_issue_pc(drive, &cmd, pc);
}
/*
return;
clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags);
- tape->merge_bh_size = 0;
- if (tape->merge_bh != NULL) {
- ide_tape_kfree_buffer(tape);
- tape->merge_bh = NULL;
+ tape->valid = 0;
+ if (tape->buf != NULL) {
+ kfree(tape->buf);
+ tape->buf = NULL;
}
tape->chrdev_dir = IDETAPE_DIR_NONE;
* Generate a read/write request for the block device interface and wait for it
* to be serviced.
*/
-static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
- struct idetape_bh *bh)
+static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
{
idetape_tape_t *tape = drive->driver_data;
struct request *rq;
- int ret, errors;
+ int ret;
debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd);
+ BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE);
+ BUG_ON(size < 0 || size % tape->blk_size);
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 (size) {
+ ret = blk_rq_map_kern(drive->queue, rq, tape->buf, size,
+ __GFP_WAIT);
+ if (ret)
+ goto out_put;
+ }
- if ((cmd & (REQ_IDETAPE_READ | REQ_IDETAPE_WRITE)) == 0)
- return 0;
+ blk_execute_rq(drive->queue, tape->disk, rq, 0);
- if (tape->merge_bh)
- idetape_init_merge_buffer(tape);
- if (errors == IDE_DRV_ERROR_GENERAL)
- return -EIO;
+ /* calculate the number of transferred bytes and update buffer state */
+ size -= rq->data_len;
+ tape->cur = tape->buf;
+ if (cmd == REQ_IDETAPE_READ)
+ tape->valid = size;
+ else
+ tape->valid = 0;
+
+ ret = size;
+ if (rq->errors == IDE_DRV_ERROR_GENERAL)
+ ret = -EIO;
+out_put:
+ blk_put_request(rq);
return ret;
}
pc->flags |= PC_FLAG_WAIT_FOR_DSC;
}
-/* Queue up a character device originated write request. */
-static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
-{
- idetape_tape_t *tape = drive->driver_data;
-
- debug_log(DBG_CHRDEV, "Enter %s\n", __func__);
-
- return idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE,
- blocks, tape->merge_bh);
-}
-
static void ide_tape_flush_merge_buffer(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
- int blocks, min;
- struct idetape_bh *bh;
if (tape->chrdev_dir != IDETAPE_DIR_WRITE) {
printk(KERN_ERR "ide-tape: bug: Trying to empty merge buffer"
" but we are not writing.\n");
return;
}
- if (tape->merge_bh_size > tape->buffer_size) {
- printk(KERN_ERR "ide-tape: bug: merge_buffer too big\n");
- tape->merge_bh_size = tape->buffer_size;
- }
- if (tape->merge_bh_size) {
- blocks = tape->merge_bh_size / tape->blk_size;
- if (tape->merge_bh_size % tape->blk_size) {
- unsigned int i;
-
- blocks++;
- i = tape->blk_size - tape->merge_bh_size %
- tape->blk_size;
- bh = tape->bh->b_reqnext;
- while (bh) {
- atomic_set(&bh->b_count, 0);
- bh = bh->b_reqnext;
- }
- bh = tape->bh;
- while (i) {
- if (bh == NULL) {
- printk(KERN_INFO "ide-tape: bug,"
- " bh NULL\n");
- break;
- }
- min = min(i, (unsigned int)(bh->b_size -
- atomic_read(&bh->b_count)));
- memset(bh->b_data + atomic_read(&bh->b_count),
- 0, min);
- atomic_add(min, &bh->b_count);
- i -= min;
- bh = bh->b_reqnext;
- }
- }
- (void) idetape_add_chrdev_write_request(drive, blocks);
- tape->merge_bh_size = 0;
- }
- if (tape->merge_bh != NULL) {
- ide_tape_kfree_buffer(tape);
- tape->merge_bh = NULL;
+ if (tape->buf) {
+ size_t aligned = roundup(tape->valid, tape->blk_size);
+
+ memset(tape->cur, 0, aligned - tape->valid);
+ idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, aligned);
+ kfree(tape->buf);
+ tape->buf = NULL;
}
tape->chrdev_dir = IDETAPE_DIR_NONE;
}
-static int idetape_init_read(ide_drive_t *drive)
+static int idetape_init_rw(ide_drive_t *drive, int dir)
{
idetape_tape_t *tape = drive->driver_data;
- int bytes_read;
+ int rc;
- /* Initialize read operation */
- if (tape->chrdev_dir != IDETAPE_DIR_READ) {
- if (tape->chrdev_dir == IDETAPE_DIR_WRITE) {
- ide_tape_flush_merge_buffer(drive);
- idetape_flush_tape_buffers(drive);
- }
- if (tape->merge_bh || tape->merge_bh_size) {
- printk(KERN_ERR "ide-tape: merge_bh_size should be"
- " 0 now\n");
- tape->merge_bh_size = 0;
- }
- tape->merge_bh = ide_tape_kmalloc_buffer(tape, 0, 0);
- if (!tape->merge_bh)
- return -ENOMEM;
- tape->chrdev_dir = IDETAPE_DIR_READ;
+ BUG_ON(dir != IDETAPE_DIR_READ && dir != IDETAPE_DIR_WRITE);
- /*
- * Issue a read 0 command to ensure that DSC handshake is
- * switched from completion mode to buffer available mode.
- * No point in issuing this if DSC overlap isn't supported, some
- * drives (Seagate STT3401A) will return an error.
- */
- if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) {
- bytes_read = idetape_queue_rw_tail(drive,
- REQ_IDETAPE_READ, 0,
- tape->merge_bh);
- if (bytes_read < 0) {
- ide_tape_kfree_buffer(tape);
- tape->merge_bh = NULL;
- tape->chrdev_dir = IDETAPE_DIR_NONE;
- return bytes_read;
- }
- }
- }
+ if (tape->chrdev_dir == dir)
+ return 0;
- return 0;
-}
+ if (tape->chrdev_dir == IDETAPE_DIR_READ)
+ ide_tape_discard_merge_buffer(drive, 1);
+ else if (tape->chrdev_dir == IDETAPE_DIR_WRITE) {
+ ide_tape_flush_merge_buffer(drive);
+ idetape_flush_tape_buffers(drive);
+ }
-/* called from idetape_chrdev_read() to service a chrdev read request. */
-static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
-{
- idetape_tape_t *tape = drive->driver_data;
+ if (tape->buf || tape->valid) {
+ printk(KERN_ERR "ide-tape: valid should be 0 now\n");
+ tape->valid = 0;
+ }
- debug_log(DBG_PROCS, "Enter %s, %d blocks\n", __func__, blocks);
+ tape->buf = kmalloc(tape->buffer_size, GFP_KERNEL);
+ if (!tape->buf)
+ return -ENOMEM;
+ tape->chrdev_dir = dir;
+ tape->cur = tape->buf;
- /* If we are at a filemark, return a read length of 0 */
- if (test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags))
- return 0;
-
- idetape_init_read(drive);
+ /*
+ * Issue a 0 rw command to ensure that DSC handshake is
+ * switched from completion mode to buffer available mode. No
+ * point in issuing this if DSC overlap isn't supported, some
+ * drives (Seagate STT3401A) will return an error.
+ */
+ if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) {
+ int cmd = dir == IDETAPE_DIR_READ ? REQ_IDETAPE_READ
+ : REQ_IDETAPE_WRITE;
+
+ rc = idetape_queue_rw_tail(drive, cmd, 0);
+ if (rc < 0) {
+ kfree(tape->buf);
+ tape->buf = NULL;
+ tape->chrdev_dir = IDETAPE_DIR_NONE;
+ return rc;
+ }
+ }
- return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks,
- tape->merge_bh);
+ return 0;
}
static void idetape_pad_zeros(ide_drive_t *drive, int bcount)
{
idetape_tape_t *tape = drive->driver_data;
- struct idetape_bh *bh;
- int blocks;
+
+ memset(tape->buf, 0, tape->buffer_size);
while (bcount) {
- unsigned int count;
+ unsigned int count = min(tape->buffer_size, bcount);
- bh = tape->merge_bh;
- count = min(tape->buffer_size, bcount);
+ idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, count);
bcount -= count;
- blocks = count / tape->blk_size;
- while (count) {
- atomic_set(&bh->b_count,
- min(count, (unsigned int)bh->b_size));
- memset(bh->b_data, 0, atomic_read(&bh->b_count));
- count -= atomic_read(&bh->b_count);
- bh = bh->b_reqnext;
- }
- idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, blocks,
- tape->merge_bh);
}
}
}
if (tape->chrdev_dir == IDETAPE_DIR_READ) {
- tape->merge_bh_size = 0;
+ tape->valid = 0;
if (test_and_clear_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags))
++count;
ide_tape_discard_merge_buffer(drive, 0);
{
struct ide_tape_obj *tape = file->private_data;
ide_drive_t *drive = tape->drive;
- ssize_t bytes_read, temp, actually_read = 0, rc;
+ size_t done = 0;
ssize_t ret = 0;
- u16 ctl = *(u16 *)&tape->caps[12];
+ int rc;
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
(count % tape->blk_size) == 0)
tape->user_bs_factor = count / tape->blk_size;
}
- rc = idetape_init_read(drive);
+
+ rc = idetape_init_rw(drive, IDETAPE_DIR_READ);
if (rc < 0)
return rc;
- if (count == 0)
- return (0);
- if (tape->merge_bh_size) {
- actually_read = min((unsigned int)(tape->merge_bh_size),
- (unsigned int)count);
- if (idetape_copy_stage_to_user(tape, buf, actually_read))
- ret = -EFAULT;
- buf += actually_read;
- tape->merge_bh_size -= actually_read;
- count -= actually_read;
- }
- while (count >= tape->buffer_size) {
- bytes_read = idetape_add_chrdev_read_request(drive, ctl);
- if (bytes_read <= 0)
- goto finish;
- if (idetape_copy_stage_to_user(tape, buf, bytes_read))
- ret = -EFAULT;
- buf += bytes_read;
- count -= bytes_read;
- actually_read += bytes_read;
- }
- if (count) {
- bytes_read = idetape_add_chrdev_read_request(drive, ctl);
- if (bytes_read <= 0)
- goto finish;
- temp = min((unsigned long)count, (unsigned long)bytes_read);
- if (idetape_copy_stage_to_user(tape, buf, temp))
+
+ while (done < count) {
+ size_t todo;
+
+ /* refill if staging buffer is empty */
+ if (!tape->valid) {
+ /* If we are at a filemark, nothing more to read */
+ if (test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags))
+ break;
+ /* read */
+ if (idetape_queue_rw_tail(drive, REQ_IDETAPE_READ,
+ tape->buffer_size) <= 0)
+ break;
+ }
+
+ /* copy out */
+ todo = min_t(size_t, count - done, tape->valid);
+ if (copy_to_user(buf + done, tape->cur, todo))
ret = -EFAULT;
- actually_read += temp;
- tape->merge_bh_size = bytes_read-temp;
+
+ tape->cur += todo;
+ tape->valid -= todo;
+ done += todo;
}
-finish:
- if (!actually_read && test_bit(IDE_AFLAG_FILEMARK, &drive->atapi_flags)) {
+
+ if (!done && 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);
return 0;
}
- return ret ? ret : actually_read;
+ return ret ? ret : done;
}
static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf,
{
struct ide_tape_obj *tape = file->private_data;
ide_drive_t *drive = tape->drive;
- ssize_t actually_written = 0;
+ size_t done = 0;
ssize_t ret = 0;
- u16 ctl = *(u16 *)&tape->caps[12];
+ int rc;
/* The drive is write protected. */
if (tape->write_prot)
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
/* Initialize write operation */
- if (tape->chrdev_dir != IDETAPE_DIR_WRITE) {
- if (tape->chrdev_dir == IDETAPE_DIR_READ)
- ide_tape_discard_merge_buffer(drive, 1);
- if (tape->merge_bh || tape->merge_bh_size) {
- printk(KERN_ERR "ide-tape: merge_bh_size "
- "should be 0 now\n");
- tape->merge_bh_size = 0;
- }
- tape->merge_bh = ide_tape_kmalloc_buffer(tape, 0, 0);
- if (!tape->merge_bh)
- return -ENOMEM;
- tape->chrdev_dir = IDETAPE_DIR_WRITE;
- idetape_init_merge_buffer(tape);
+ rc = idetape_init_rw(drive, IDETAPE_DIR_WRITE);
+ if (rc < 0)
+ return rc;
- /*
- * Issue a write 0 command to ensure that DSC handshake is
- * switched from completion mode to buffer available mode. No
- * point in issuing this if DSC overlap isn't supported, some
- * drives (Seagate STT3401A) will return an error.
- */
- if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) {
- ssize_t retval = idetape_queue_rw_tail(drive,
- REQ_IDETAPE_WRITE, 0,
- tape->merge_bh);
- if (retval < 0) {
- ide_tape_kfree_buffer(tape);
- tape->merge_bh = NULL;
- tape->chrdev_dir = IDETAPE_DIR_NONE;
- return retval;
- }
- }
- }
- if (count == 0)
- return (0);
- if (tape->merge_bh_size) {
- if (tape->merge_bh_size >= tape->buffer_size) {
- printk(KERN_ERR "ide-tape: bug: merge buf too big\n");
- tape->merge_bh_size = 0;
- }
- actually_written = min((unsigned int)
- (tape->buffer_size - tape->merge_bh_size),
- (unsigned int)count);
- if (idetape_copy_stage_from_user(tape, buf, actually_written))
- ret = -EFAULT;
- buf += actually_written;
- tape->merge_bh_size += actually_written;
- count -= actually_written;
-
- if (tape->merge_bh_size == tape->buffer_size) {
- ssize_t retval;
- tape->merge_bh_size = 0;
- retval = idetape_add_chrdev_write_request(drive, ctl);
- if (retval <= 0)
- return (retval);
- }
- }
- while (count >= tape->buffer_size) {
- ssize_t retval;
- if (idetape_copy_stage_from_user(tape, buf, tape->buffer_size))
- ret = -EFAULT;
- buf += tape->buffer_size;
- count -= tape->buffer_size;
- retval = idetape_add_chrdev_write_request(drive, ctl);
- actually_written += tape->buffer_size;
- if (retval <= 0)
- return (retval);
- }
- if (count) {
- actually_written += count;
- if (idetape_copy_stage_from_user(tape, buf, count))
+ while (done < count) {
+ size_t todo;
+
+ /* flush if staging buffer is full */
+ if (tape->valid == tape->buffer_size &&
+ idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE,
+ tape->buffer_size) <= 0)
+ return rc;
+
+ /* copy in */
+ todo = min_t(size_t, count - done,
+ tape->buffer_size - tape->valid);
+ if (copy_from_user(tape->cur, buf + done, todo))
ret = -EFAULT;
- tape->merge_bh_size += count;
+
+ tape->cur += todo;
+ tape->valid += todo;
+ done += todo;
}
- return ret ? ret : actually_written;
+
+ return ret ? ret : done;
}
static int idetape_write_filemark(ide_drive_t *drive)
idetape_flush_tape_buffers(drive);
}
if (cmd == MTIOCGET || cmd == MTIOCPOS) {
- block_offset = tape->merge_bh_size /
+ block_offset = tape->valid /
(tape->blk_size * tape->user_bs_factor);
position = idetape_read_position(drive);
if (position < 0)
idetape_tape_t *tape = drive->driver_data;
ide_tape_flush_merge_buffer(drive);
- tape->merge_bh = ide_tape_kmalloc_buffer(tape, 1, 0);
- if (tape->merge_bh != NULL) {
+ tape->buf = kmalloc(tape->buffer_size, GFP_KERNEL);
+ if (tape->buf != NULL) {
idetape_pad_zeros(drive, tape->blk_size *
(tape->user_bs_factor - 1));
- ide_tape_kfree_buffer(tape);
- tape->merge_bh = NULL;
+ kfree(tape->buf);
+ tape->buf = NULL;
}
idetape_write_filemark(drive);
idetape_flush_tape_buffers(drive);
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;
drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
tape->buffer_size = *ctl * tape->blk_size;
}
buffer_size = tape->buffer_size;
- tape->pages_per_buffer = buffer_size / PAGE_SIZE;
- if (buffer_size % PAGE_SIZE) {
- tape->pages_per_buffer++;
- tape->excess_bh_size = PAGE_SIZE - buffer_size % PAGE_SIZE;
- }
/* select the "best" DSC read/write polling freq */
speed = max(*(u16 *)&tape->caps[14], *(u16 *)&tape->caps[8]);
ide_drive_t *drive = tape->drive;
struct gendisk *g = tape->disk;
- BUG_ON(tape->merge_bh_size);
+ BUG_ON(tape->valid);
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
drive->driver_data = NULL;
if (!OK_STAT(stat, ATA_DRDY, BAD_STAT)) {
if (custom && tf->command == ATA_CMD_SET_MULTI) {
drive->mult_req = drive->mult_count = 0;
- drive->special.b.recalibrate = 1;
+ drive->special_flags |= IDE_SFLAG_RECALIBRATE;
(void)ide_dump_status(drive, __func__, stat);
return ide_stopped;
} else if (custom && tf->command == ATA_CMD_INIT_DEV_PARAMS) {
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
- rq->buffer = buf;
+
+ if (cmd->tf_flags & IDE_TFLAG_WRITE)
+ rq->cmd_flags |= REQ_RW;
/*
* (ks) We transfer currently only whole sectors.
* if we would find a solution to transfer any size.
* To support special commands like READ LONG.
*/
- rq->hard_nr_sectors = rq->nr_sectors = nsect;
- rq->hard_cur_sectors = rq->current_nr_sectors = nsect;
-
- if (cmd->tf_flags & IDE_TFLAG_WRITE)
- rq->cmd_flags |= REQ_RW;
+ if (nsect) {
+ error = blk_rq_map_kern(drive->queue, rq, buf,
+ nsect * SECTOR_SIZE, __GFP_WAIT);
+ if (error)
+ goto put_req;
+ }
rq->special = cmd;
cmd->rq = rq;
error = blk_execute_rq(drive->queue, NULL, rq, 0);
- blk_put_request(rq);
+put_req:
+ blk_put_request(rq);
return error;
}
#include <linux/platform_device.h>
#include <linux/io.h>
-static void __devinit plat_ide_setup_ports(hw_regs_t *hw,
+static void __devinit plat_ide_setup_ports(struct ide_hw *hw,
void __iomem *base,
void __iomem *ctrl,
struct pata_platform_info *pdata,
hw->io_ports.ctl_addr = (unsigned long)ctrl;
hw->irq = irq;
-
- hw->chipset = ide_generic;
}
static const struct ide_port_info platform_ide_port_info = {
.host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
static int __devinit plat_ide_probe(struct platform_device *pdev)
struct pata_platform_info *pdata;
struct ide_host *host;
int ret = 0, mmio = 0;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
struct ide_port_info d = platform_ide_port_info;
pdata = pdev->dev.platform_data;
if (mmio)
d.host_flags |= IDE_HFLAG_MMIO;
- ret = ide_host_add(&d, hws, &host);
+ ret = ide_host_add(&d, hws, 1, &host);
if (ret)
goto out;
return 0;
}
-static void __init macide_setup_ports(hw_regs_t *hw, unsigned long base,
+static void __init macide_setup_ports(struct ide_hw *hw, unsigned long base,
int irq, ide_ack_intr_t *ack_intr)
{
int i;
hw->irq = irq;
hw->ack_intr = ack_intr;
-
- hw->chipset = ide_generic;
}
static const struct ide_port_info macide_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_generic,
};
static const char *mac_ide_name[] =
ide_ack_intr_t *ack_intr;
unsigned long base;
int irq;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
if (!MACH_IS_MAC)
return -ENODEV;
macide_setup_ports(&hw, base, irq, ack_intr);
- return ide_host_add(&macide_port_info, hws, NULL);
+ return ide_host_add(&macide_port_info, hws, 1, NULL);
}
module_init(macide_init);
.host_flags = IDE_HFLAG_MMIO,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
+ .chipset = ide_palm3710,
};
static int __init palm_bk3710_probe(struct platform_device *pdev)
void __iomem *base;
unsigned long rate, mem_size;
int i, rc;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
clk = clk_get(&pdev->dev, "IDECLK");
if (IS_ERR(clk))
(base + IDE_PALM_ATA_PRI_CTL_OFFSET);
hw.irq = irq->start;
hw.dev = &pdev->dev;
- hw.chipset = ide_palm3710;
palm_bk3710_port_info.udma_mask = rate < 100000000 ? ATA_UDMA4 :
ATA_UDMA5;
/* Register the IDE interface with Linux */
- rc = ide_host_add(&palm_bk3710_port_info, hws, NULL);
+ rc = ide_host_add(&palm_bk3710_port_info, hws, 1, NULL);
if (rc)
goto out;
* Setup, register & probe an IDE channel driven by this driver, this is
* called by one of the 2 probe functions (macio or PCI).
*/
-static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif, hw_regs_t *hw)
+static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif,
+ struct ide_hw *hw)
{
struct device_node *np = pmif->node;
const int *bidp;
struct ide_host *host;
ide_hwif_t *hwif;
- hw_regs_t *hws[] = { hw, NULL, NULL, NULL };
+ struct ide_hw *hws[] = { hw };
struct ide_port_info d = pmac_port_info;
int rc;
/* Make sure we have sane timings */
sanitize_timings(pmif);
- host = ide_host_alloc(&d, hws);
+ host = ide_host_alloc(&d, hws, 1);
if (host == NULL)
return -ENOMEM;
hwif = host->ports[0];
return 0;
}
-static void __devinit pmac_ide_init_ports(hw_regs_t *hw, unsigned long base)
+static void __devinit pmac_ide_init_ports(struct ide_hw *hw, unsigned long base)
{
int i;
unsigned long regbase;
pmac_ide_hwif_t *pmif;
int irq, rc;
- hw_regs_t hw;
+ struct ide_hw hw;
pmif = kzalloc(sizeof(*pmif), GFP_KERNEL);
if (pmif == NULL)
void __iomem *base;
unsigned long rbase, rlen;
int rc;
- hw_regs_t hw;
+ struct ide_hw hw;
np = pci_device_to_OF_node(pdev);
if (np == NULL) {
/*
* Addresses are pretranslated for Q40 ISA access.
*/
-static void q40_ide_setup_ports(hw_regs_t *hw, unsigned long base,
+static void q40_ide_setup_ports(struct ide_hw *hw, unsigned long base,
ide_ack_intr_t *ack_intr,
int irq)
{
- memset(hw, 0, sizeof(hw_regs_t));
+ memset(hw, 0, sizeof(*hw));
/* BIG FAT WARNING:
assumption: only DATA port is ever used in 16 bit mode */
hw->io_ports.data_addr = Q40_ISA_IO_W(base);
hw->irq = irq;
hw->ack_intr = ack_intr;
-
- hw->chipset = ide_generic;
}
static void q40ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
.tp_ops = &q40ide_tp_ops,
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
.irq_flags = IRQF_SHARED,
+ .chipset = ide_generic,
};
/*
static int __init q40ide_init(void)
{
int i;
- hw_regs_t hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL };
if (!MACH_IS_Q40)
return -ENODEV;
hws[i] = &hw[i];
}
- return ide_host_add(&q40ide_port_info, hws, NULL);
+ return ide_host_add(&q40ide_port_info, hws, Q40IDE_NUM_HWIFS, NULL);
}
module_init(q40ide_init);
static const struct ide_port_info rapide_port_info = {
.host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
};
-static void rapide_setup_ports(hw_regs_t *hw, void __iomem *base,
+static void rapide_setup_ports(struct ide_hw *hw, void __iomem *base,
void __iomem *ctrl, unsigned int sz, int irq)
{
unsigned long port = (unsigned long)base;
void __iomem *base;
struct ide_host *host;
int ret;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
ret = ecard_request_resources(ec);
if (ret)
memset(&hw, 0, sizeof(hw));
rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
- hw.chipset = ide_generic;
hw.dev = &ec->dev;
- ret = ide_host_add(&rapide_port_info, hws, &host);
+ ret = ide_host_add(&rapide_port_info, hws, 1, &host);
if (ret)
goto release;
{
struct scc_ports *ports = pci_get_drvdata(dev);
struct ide_host *host;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
int i, rc;
memset(&hw, 0, sizeof(hw));
hw.io_ports_array[i] = ports->dma + 0x20 + i * 4;
hw.irq = dev->irq;
hw.dev = &dev->dev;
- hw.chipset = ide_pci;
- rc = ide_host_add(d, hws, &host);
+ rc = ide_host_add(d, hws, 1, &host);
if (rc)
return rc;
.host_flags = IDE_HFLAG_SINGLE,
.irq_flags = IRQF_SHARED,
.pio_mask = ATA_PIO4,
+ .chipset = ide_pci,
};
/**
}
/**
- * ide_hw_configure - configure a hw_regs_t instance
+ * ide_hw_configure - configure a struct ide_hw instance
* @dev: PCI device holding interface
* @d: IDE port info
* @port: port number
- * @hw: hw_regs_t instance corresponding to this port
+ * @hw: struct ide_hw instance corresponding to this port
*
* Perform the initial set up for the hardware interface structure. This
* is done per interface port rather than per PCI device. There may be
*/
static int ide_hw_configure(struct pci_dev *dev, const struct ide_port_info *d,
- unsigned int port, hw_regs_t *hw)
+ unsigned int port, struct ide_hw *hw)
{
unsigned long ctl = 0, base = 0;
memset(hw, 0, sizeof(*hw));
hw->dev = &dev->dev;
- hw->chipset = d->chipset ? d->chipset : ide_pci;
ide_std_init_ports(hw, base, ctl | 2);
return 0;
* ide_pci_setup_ports - configure ports/devices on PCI IDE
* @dev: PCI device
* @d: IDE port info
- * @hw: hw_regs_t instances corresponding to this PCI IDE device
- * @hws: hw_regs_t pointers table to update
+ * @hw: struct ide_hw instances corresponding to this PCI IDE device
+ * @hws: struct ide_hw pointers table to update
*
* Scan the interfaces attached to this device and do any
* necessary per port setup. Attach the devices and ask the
*/
void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d,
- hw_regs_t *hw, hw_regs_t **hws)
+ struct ide_hw *hw, struct ide_hw **hws)
{
int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
u8 tmp;
void *priv)
{
struct ide_host *host;
- hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[2], *hws[] = { NULL, NULL };
int ret;
ret = ide_setup_pci_controller(dev, d, 1);
ide_pci_setup_ports(dev, d, &hw[0], &hws[0]);
- host = ide_host_alloc(d, hws);
+ host = ide_host_alloc(d, hws, 2);
if (host == NULL) {
ret = -ENOMEM;
goto out;
struct pci_dev *pdev[] = { dev1, dev2 };
struct ide_host *host;
int ret, i;
- hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
+ struct ide_hw hw[4], *hws[] = { NULL, NULL, NULL, NULL };
for (i = 0; i < 2; i++) {
ret = ide_setup_pci_controller(pdev[i], d, !i);
ide_pci_setup_ports(pdev[i], d, &hw[i*2], &hws[i*2]);
}
- host = ide_host_alloc(d, hws);
+ host = ide_host_alloc(d, hws, 4);
if (host == NULL) {
ret = -ENOMEM;
goto out;
static void
-sgiioc4_init_hwif_ports(hw_regs_t * hw, unsigned long data_port,
+sgiioc4_init_hwif_ports(struct ide_hw *hw, unsigned long data_port,
unsigned long ctrl_port, unsigned long irq_port)
{
unsigned long reg = data_port;
unsigned long cmd_base, irqport;
unsigned long bar0, cmd_phys_base, ctl;
void __iomem *virt_base;
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
int rc;
/* Get the CmdBlk and CtrlBlk Base Registers */
memset(&hw, 0, sizeof(hw));
sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
hw.irq = dev->irq;
- hw.chipset = ide_pci;
hw.dev = &dev->dev;
/* Initializing chipset IRQ Registers */
writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));
- rc = ide_host_add(&sgiioc4_port_info, hws, NULL);
+ rc = ide_host_add(&sgiioc4_port_info, hws, 1, NULL);
if (!rc)
return 0;
static void sil_sata_pre_reset(ide_drive_t *drive)
{
if (drive->media == ide_disk) {
- drive->special.b.set_geometry = 0;
- drive->special.b.recalibrate = 0;
+ drive->special_flags &=
+ ~(IDE_SFLAG_SET_GEOMETRY | IDE_SFLAG_RECALIBRATE);
}
}
static int __init tx4938ide_probe(struct platform_device *pdev)
{
- hw_regs_t hw;
- hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
struct ide_host *host;
struct resource *res;
struct tx4938ide_platform_info *pdata = pdev->dev.platform_data;
tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);
else
d.port_ops = NULL;
- ret = ide_host_add(&d, hws, &host);
+ ret = ide_host_add(&d, hws, 1, &host);
if (!ret)
platform_set_drvdata(pdev, host);
return ret;
static int __init tx4939ide_probe(struct platform_device *pdev)
{
- hw_regs_t hw;
- hw_regs_t *hws[] = { &hw, NULL, NULL, NULL };
+ struct ide_hw hw, *hws[] = { &hw };
struct ide_host *host;
struct resource *res;
int irq, ret;
hw.dev = &pdev->dev;
pr_info("TX4939 IDE interface (base %#lx, irq %d)\n", mapbase, irq);
- host = ide_host_alloc(&tx4939ide_port_info, hws);
+ host = ide_host_alloc(&tx4939ide_port_info, hws, 1);
if (!host)
return -ENOMEM;
/* use extra_base for base address of the all registers */
#include <asm/io.h>
#include <asm/mutex.h>
+/* for request_sense */
+#include <linux/cdrom.h>
+
#if defined(CONFIG_CRIS) || defined(CONFIG_FRV) || defined(CONFIG_MN10300)
# define SUPPORT_VLB_SYNC 0
#else
/*
* Structure to hold all information about the location of this port
*/
-typedef struct hw_regs_s {
+struct ide_hw {
union {
struct ide_io_ports io_ports;
unsigned long io_ports_array[IDE_NR_PORTS];
int irq; /* our irq number */
ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
- hwif_chipset_t chipset;
struct device *dev, *parent;
unsigned long config;
-} hw_regs_t;
+};
-static inline void ide_std_init_ports(hw_regs_t *hw,
+static inline void ide_std_init_ports(struct ide_hw *hw,
unsigned long io_addr,
unsigned long ctl_addr)
{
/*
* Special Driver Flags
- *
- * set_geometry : respecify drive geometry
- * recalibrate : seek to cyl 0
- * set_multmode : set multmode count
- * reserved : unused
*/
-typedef union {
- unsigned all : 8;
- struct {
- unsigned set_geometry : 1;
- unsigned recalibrate : 1;
- unsigned set_multmode : 1;
- unsigned reserved : 5;
- } b;
-} special_t;
+enum {
+ IDE_SFLAG_SET_GEOMETRY = (1 << 0),
+ IDE_SFLAG_RECALIBRATE = (1 << 1),
+ IDE_SFLAG_SET_MULTMODE = (1 << 2),
+};
/*
* Status returned from various ide_ functions
unsigned int cursg_ofs;
struct request *rq; /* copy of request */
- void *special; /* valid_t generally */
};
/* ATAPI packet command flags */
/* data buffer */
u8 *buf;
- /* current buffer position */
- u8 *cur_pos;
int buf_size;
- /* missing/available data on the current buffer */
- int b_count;
/* the corresponding request */
struct request *rq;
*/
u8 pc_buf[IDE_PC_BUFFER_SIZE];
- /* idetape only */
- struct idetape_bh *bh;
- char *b_data;
-
unsigned long timeout;
};
unsigned long sleep; /* sleep until this time */
unsigned long timeout; /* max time to wait for irq */
- special_t special; /* special action flags */
+ u8 special_flags; /* special action flags */
u8 select; /* basic drive/head select reg value */
u8 retry_pio; /* retrying dma capable host in pio */
/* callback for packet commands */
int (*pc_callback)(struct ide_drive_s *, int);
- void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
- int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
- unsigned int, int);
-
ide_startstop_t (*irq_handler)(struct ide_drive_s *);
unsigned long atapi_flags;
struct ide_atapi_pc request_sense_pc;
- struct request request_sense_rq;
+
+ /* current sense rq and buffer */
+ bool sense_rq_armed;
+ struct request sense_rq;
+ struct request_sense sense_data;
};
typedef struct ide_drive_s ide_drive_t;
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
-void ide_retry_pc(ide_drive_t *, struct gendisk *);
+void ide_retry_pc(ide_drive_t *drive);
+
+void ide_prep_sense(ide_drive_t *drive, struct request *rq);
+int ide_queue_sense_rq(ide_drive_t *drive, void *special);
int ide_cd_expiry(ide_drive_t *);
}
void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
- hw_regs_t *, hw_regs_t **);
+ struct ide_hw *, struct ide_hw **);
void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
void ide_port_apply_params(ide_hwif_t *);
int ide_sysfs_register_port(ide_hwif_t *);
-struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
+struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
+ unsigned int);
void ide_host_free(struct ide_host *);
int ide_host_register(struct ide_host *, const struct ide_port_info *,
- hw_regs_t **);
-int ide_host_add(const struct ide_port_info *, hw_regs_t **,
+ struct ide_hw **);
+int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
struct ide_host **);
void ide_host_remove(struct ide_host *);
int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff