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;
}
}
+static void ide_classify_ata_dev(ide_drive_t *drive)
+{
+ u16 *id = drive->id;
+ char *m = (char *)&id[ATA_ID_PROD];
+ int is_cfa = ata_id_is_cfa(id);
+
+ /* CF devices are *not* removable in Linux definition of the term */
+ if (is_cfa == 0 && (id[ATA_ID_CONFIG] & (1 << 7)))
+ drive->dev_flags |= IDE_DFLAG_REMOVABLE;
+
+ drive->media = ide_disk;
+
+ if (!ata_id_has_unload(drive->id))
+ drive->dev_flags |= IDE_DFLAG_NO_UNLOAD;
+
+ printk(KERN_INFO "%s: %s, %s DISK drive\n", drive->name, m,
+ is_cfa ? "CFA" : "ATA");
+}
+
+static void ide_classify_atapi_dev(ide_drive_t *drive)
+{
+ u16 *id = drive->id;
+ char *m = (char *)&id[ATA_ID_PROD];
+ u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f;
+
+ printk(KERN_INFO "%s: %s, ATAPI ", drive->name, m);
+ switch (type) {
+ case ide_floppy:
+ if (!strstr(m, "CD-ROM")) {
+ if (!strstr(m, "oppy") &&
+ !strstr(m, "poyp") &&
+ !strstr(m, "ZIP"))
+ printk(KERN_CONT "cdrom or floppy?, assuming ");
+ if (drive->media != ide_cdrom) {
+ printk(KERN_CONT "FLOPPY");
+ drive->dev_flags |= IDE_DFLAG_REMOVABLE;
+ break;
+ }
+ }
+ /* Early cdrom models used zero */
+ type = ide_cdrom;
+ case ide_cdrom:
+ drive->dev_flags |= IDE_DFLAG_REMOVABLE;
+#ifdef CONFIG_PPC
+ /* kludge for Apple PowerBook internal zip */
+ if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) {
+ printk(KERN_CONT "FLOPPY");
+ type = ide_floppy;
+ break;
+ }
+#endif
+ printk(KERN_CONT "CD/DVD-ROM");
+ break;
+ case ide_tape:
+ printk(KERN_CONT "TAPE");
+ break;
+ case ide_optical:
+ printk(KERN_CONT "OPTICAL");
+ drive->dev_flags |= IDE_DFLAG_REMOVABLE;
+ break;
+ default:
+ printk(KERN_CONT "UNKNOWN (type %d)", type);
+ break;
+ }
+
+ printk(KERN_CONT " drive\n");
+ drive->media = type;
+ /* an ATAPI device ignores DRDY */
+ drive->ready_stat = 0;
+ if (ata_id_cdb_intr(id))
+ drive->atapi_flags |= IDE_AFLAG_DRQ_INTERRUPT;
+ drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
+ /* we don't do head unloading on ATAPI devices */
+ drive->dev_flags |= IDE_DFLAG_NO_UNLOAD;
+}
+
/**
* do_identify - identify a drive
* @drive: drive to identify
* @cmd: command used
+ * @id: buffer for IDENTIFY data
*
* Called when we have issued a drive identify command to
* read and parse the results. This function is run with
* interrupts disabled.
*/
-
-static inline void do_identify (ide_drive_t *drive, u8 cmd)
+
+static void do_identify(ide_drive_t *drive, u8 cmd, u16 *id)
{
- ide_hwif_t *hwif = HWIF(drive);
- u16 *id = drive->id;
+ ide_hwif_t *hwif = drive->hwif;
char *m = (char *)&id[ATA_ID_PROD];
- int bswap = 1, is_cfa;
+ unsigned long flags;
+ int bswap = 1;
+ /* local CPU only; some systems need this */
+ local_irq_save(flags);
/* read 512 bytes of id info */
hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE);
+ local_irq_restore(flags);
drive->dev_flags |= IDE_DFLAG_ID_READ;
-
- local_irq_enable();
#ifdef DEBUG
printk(KERN_INFO "%s: dumping identify data\n", drive->name);
ide_dump_identify((u8 *)id);
m[ATA_ID_PROD_LEN - 1] = '\0';
if (strstr(m, "E X A B Y T E N E S T"))
- goto err_misc;
-
- printk(KERN_INFO "%s: %s, ", drive->name, m);
-
- drive->dev_flags |= IDE_DFLAG_PRESENT;
- drive->dev_flags &= ~IDE_DFLAG_DEAD;
-
- /*
- * Check for an ATAPI device
- */
- if (cmd == ATA_CMD_ID_ATAPI) {
- u8 type = (id[ATA_ID_CONFIG] >> 8) & 0x1f;
-
- printk(KERN_CONT "ATAPI ");
- switch (type) {
- case ide_floppy:
- if (!strstr(m, "CD-ROM")) {
- if (!strstr(m, "oppy") &&
- !strstr(m, "poyp") &&
- !strstr(m, "ZIP"))
- printk(KERN_CONT "cdrom or floppy?, assuming ");
- if (drive->media != ide_cdrom) {
- printk(KERN_CONT "FLOPPY");
- drive->dev_flags |= IDE_DFLAG_REMOVABLE;
- break;
- }
- }
- /* Early cdrom models used zero */
- type = ide_cdrom;
- case ide_cdrom:
- drive->dev_flags |= IDE_DFLAG_REMOVABLE;
-#ifdef CONFIG_PPC
- /* kludge for Apple PowerBook internal zip */
- if (!strstr(m, "CD-ROM") && strstr(m, "ZIP")) {
- printk(KERN_CONT "FLOPPY");
- type = ide_floppy;
- break;
- }
-#endif
- printk(KERN_CONT "CD/DVD-ROM");
- break;
- case ide_tape:
- printk(KERN_CONT "TAPE");
- break;
- case ide_optical:
- printk(KERN_CONT "OPTICAL");
- drive->dev_flags |= IDE_DFLAG_REMOVABLE;
- break;
- default:
- printk(KERN_CONT "UNKNOWN (type %d)", type);
- break;
- }
- printk(KERN_CONT " drive\n");
- drive->media = type;
- /* an ATAPI device ignores DRDY */
- drive->ready_stat = 0;
- return;
- }
-
- /*
- * Not an ATAPI device: looks like a "regular" hard disk
- */
-
- is_cfa = ata_id_is_cfa(id);
-
- /* CF devices are *not* removable in Linux definition of the term */
- if (is_cfa == 0 && (id[ATA_ID_CONFIG] & (1 << 7)))
- drive->dev_flags |= IDE_DFLAG_REMOVABLE;
-
- drive->media = ide_disk;
-
- printk(KERN_CONT "%s DISK drive\n", is_cfa ? "CFA" : "ATA");
-
- return;
-
-err_misc:
- kfree(id);
- drive->dev_flags &= ~IDE_DFLAG_PRESENT;
- return;
+ drive->dev_flags &= ~IDE_DFLAG_PRESENT;
+ else
+ drive->dev_flags |= IDE_DFLAG_PRESENT;
}
/**
- * actual_try_to_identify - send ata/atapi identify
+ * ide_dev_read_id - send ATA/ATAPI IDENTIFY command
* @drive: drive to identify
* @cmd: command to use
+ * @id: buffer for IDENTIFY data
+ * @irq_ctx: flag set when called from the IRQ context
*
- * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
- * and waits for a response. It also monitors irqs while this is
- * happening, in hope of automatically determining which one is
- * being used by the interface.
+ * Sends an ATA(PI) IDENTIFY request to a drive and waits for a response.
*
* Returns: 0 device was identified
* 1 device timed-out (no response to identify request)
* 2 device aborted the command (refused to identify itself)
*/
-static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
+int ide_dev_read_id(ide_drive_t *drive, u8 cmd, u16 *id, int irq_ctx)
{
- ide_hwif_t *hwif = HWIF(drive);
+ ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
int use_altstatus = 0, rc;
unsigned long timeout;
u8 s = 0, a = 0;
+ /*
+ * Disable device IRQ. Otherwise we'll get spurious interrupts
+ * during the identify phase that the IRQ handler isn't expecting.
+ */
+ if (io_ports->ctl_addr)
+ tp_ops->write_devctl(hwif, ATA_NIEN | ATA_DEVCTL_OBS);
+
/* take a deep breath */
- msleep(50);
+ if (irq_ctx)
+ mdelay(50);
+ else
+ msleep(50);
- if (io_ports->ctl_addr) {
+ if (io_ports->ctl_addr &&
+ (hwif->host_flags & IDE_HFLAG_BROKEN_ALTSTATUS) == 0) {
a = tp_ops->read_altstatus(hwif);
s = tp_ops->read_status(hwif);
if ((a ^ s) & ~ATA_IDX)
* identify command to be sure of reply
*/
if (cmd == ATA_CMD_ID_ATAPI) {
- ide_task_t task;
+ struct ide_taskfile tf;
- memset(&task, 0, sizeof(task));
+ memset(&tf, 0, sizeof(tf));
/* disable DMA & overlap */
- task.tf_flags = IDE_TFLAG_OUT_FEATURE;
-
- tp_ops->tf_load(drive, &task);
+ tp_ops->tf_load(drive, &tf, IDE_VALID_FEATURE);
}
/* ask drive for ID */
timeout = ((cmd == ATA_CMD_ID_ATA) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
- if (ide_busy_sleep(hwif, timeout, use_altstatus))
- return 1;
-
/* wait for IRQ and ATA_DRQ */
- msleep(50);
- s = tp_ops->read_status(hwif);
+ if (irq_ctx) {
+ rc = __ide_wait_stat(drive, ATA_DRQ, BAD_R_STAT, timeout, &s);
+ if (rc)
+ return 1;
+ } else {
+ rc = ide_busy_sleep(drive, timeout, use_altstatus);
+ if (rc)
+ return 1;
- if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) {
- unsigned long flags;
+ msleep(50);
+ s = tp_ops->read_status(hwif);
+ }
- /* local CPU only; some systems need this */
- local_irq_save(flags);
+ if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) {
/* drive returned ID */
- do_identify(drive, cmd);
+ do_identify(drive, cmd, id);
/* drive responded with ID */
rc = 0;
/* clear drive IRQ */
(void)tp_ops->read_status(hwif);
- local_irq_restore(flags);
} else {
/* drive refused ID */
rc = 2;
return rc;
}
-/**
- * try_to_identify - try to identify a drive
- * @drive: drive to probe
- * @cmd: command to use
- *
- * Issue the identify command and then do IRQ probing to
- * complete the identification when needed by finding the
- * IRQ the drive is attached to
- */
-
-static int try_to_identify (ide_drive_t *drive, u8 cmd)
-{
- ide_hwif_t *hwif = HWIF(drive);
- const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- int retval;
- int autoprobe = 0;
- unsigned long cookie = 0;
-
- /*
- * Disable device irq unless we need to
- * probe for it. Otherwise we'll get spurious
- * interrupts during the identify-phase that
- * the irq handler isn't expecting.
- */
- if (hwif->io_ports.ctl_addr) {
- if (!hwif->irq) {
- autoprobe = 1;
- cookie = probe_irq_on();
- }
- tp_ops->set_irq(hwif, autoprobe);
- }
-
- retval = actual_try_to_identify(drive, cmd);
-
- if (autoprobe) {
- int irq;
-
- tp_ops->set_irq(hwif, 0);
- /* clear drive IRQ */
- (void)tp_ops->read_status(hwif);
- udelay(5);
- irq = probe_irq_off(cookie);
- if (!hwif->irq) {
- if (irq > 0) {
- hwif->irq = irq;
- } else {
- /* Mmmm.. multiple IRQs..
- * don't know which was ours
- */
- printk(KERN_ERR "%s: IRQ probe failed (0x%lx)\n",
- drive->name, cookie);
- }
- }
- }
- return retval;
-}
-
-int ide_busy_sleep(ide_hwif_t *hwif, unsigned long timeout, int altstatus)
+int ide_busy_sleep(ide_drive_t *drive, unsigned long timeout, int altstatus)
{
+ ide_hwif_t *hwif = drive->hwif;
u8 stat;
timeout += jiffies;
return 0;
} while (time_before(jiffies, timeout));
+ printk(KERN_ERR "%s: timeout in %s\n", drive->name, __func__);
+
return 1; /* drive timed-out */
}
static u8 ide_read_device(ide_drive_t *drive)
{
- ide_task_t task;
-
- memset(&task, 0, sizeof(task));
- task.tf_flags = IDE_TFLAG_IN_DEVICE;
+ struct ide_taskfile tf;
- drive->hwif->tp_ops->tf_read(drive, &task);
+ drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_DEVICE);
- return task.tf.device;
+ return tf.device;
}
/**
static int do_probe (ide_drive_t *drive, u8 cmd)
{
- ide_hwif_t *hwif = HWIF(drive);
+ ide_hwif_t *hwif = drive->hwif;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
+ u16 *id = drive->id;
int rc;
u8 present = !!(drive->dev_flags & IDE_DFLAG_PRESENT), stat;
* (e.g. crw9624 as drive0 with disk as slave)
*/
msleep(50);
- SELECT_DRIVE(drive);
+ tp_ops->dev_select(drive);
msleep(50);
if (ide_read_device(drive) != drive->select && present == 0) {
if (drive->dn & 1) {
/* exit with drive0 selected */
- SELECT_DRIVE(&hwif->drives[0]);
+ tp_ops->dev_select(hwif->devices[0]);
/* allow ATA_BUSY to assert & clear */
msleep(50);
}
if (OK_STAT(stat, ATA_DRDY, ATA_BUSY) ||
present || cmd == ATA_CMD_ID_ATAPI) {
- /* send cmd and wait */
- if ((rc = try_to_identify(drive, cmd))) {
+ rc = ide_dev_read_id(drive, cmd, id, 0);
+ if (rc)
/* failed: try again */
- rc = try_to_identify(drive,cmd);
- }
+ rc = ide_dev_read_id(drive, cmd, id, 0);
stat = tp_ops->read_status(hwif);
printk(KERN_ERR "%s: no response (status = 0x%02x), "
"resetting drive\n", drive->name, stat);
msleep(50);
- SELECT_DRIVE(drive);
+ tp_ops->dev_select(drive);
msleep(50);
tp_ops->exec_command(hwif, ATA_CMD_DEV_RESET);
- (void)ide_busy_sleep(hwif, WAIT_WORSTCASE, 0);
- rc = try_to_identify(drive, cmd);
+ (void)ide_busy_sleep(drive, WAIT_WORSTCASE, 0);
+ rc = ide_dev_read_id(drive, cmd, id, 0);
}
/* ensure drive IRQ is clear */
}
if (drive->dn & 1) {
/* exit with drive0 selected */
- SELECT_DRIVE(&hwif->drives[0]);
+ tp_ops->dev_select(hwif->devices[0]);
msleep(50);
/* ensure drive irq is clear */
(void)tp_ops->read_status(hwif);
return rc;
}
-/*
- *
- */
-static void enable_nest (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- u8 stat;
-
- printk(KERN_INFO "%s: enabling %s -- ",
- hwif->name, (char *)&drive->id[ATA_ID_PROD]);
-
- SELECT_DRIVE(drive);
- msleep(50);
- tp_ops->exec_command(hwif, ATA_EXABYTE_ENABLE_NEST);
-
- if (ide_busy_sleep(hwif, WAIT_WORSTCASE, 0)) {
- printk(KERN_CONT "failed (timeout)\n");
- return;
- }
-
- msleep(50);
-
- stat = tp_ops->read_status(hwif);
-
- if (!OK_STAT(stat, 0, BAD_STAT))
- printk(KERN_CONT "failed (status = 0x%02x)\n", stat);
- else
- printk(KERN_CONT "success\n");
-}
-
/**
* probe_for_drives - upper level drive probe
* @drive: drive to probe for
* 1 device was found
* (note: IDE_DFLAG_PRESENT might still be not set)
*/
-
-static inline u8 probe_for_drive (ide_drive_t *drive)
+
+static u8 probe_for_drive(ide_drive_t *drive)
{
char *m;
+ int rc;
+ u8 cmd;
- /*
- * In order to keep things simple we have an id
- * block for all drives at all times. If the device
- * is pre ATA or refuses ATA/ATAPI identify we
- * will add faked data to this.
- *
- * Also note that 0 everywhere means "can't do X"
- */
-
drive->dev_flags &= ~IDE_DFLAG_ID_READ;
- drive->id = kzalloc(SECTOR_SIZE, GFP_KERNEL);
- if (drive->id == NULL) {
- printk(KERN_ERR "ide: out of memory for id data.\n");
- return 0;
- }
-
m = (char *)&drive->id[ATA_ID_PROD];
strcpy(m, "UNKNOWN");
/* skip probing? */
if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0) {
-retry:
/* if !(success||timed-out) */
- if (do_probe(drive, ATA_CMD_ID_ATA) >= 2)
+ cmd = ATA_CMD_ID_ATA;
+ rc = do_probe(drive, cmd);
+ if (rc >= 2) {
/* look for ATAPI device */
- (void)do_probe(drive, ATA_CMD_ID_ATAPI);
+ cmd = ATA_CMD_ID_ATAPI;
+ rc = do_probe(drive, cmd);
+ }
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- /* drive not found */
return 0;
- if (strstr(m, "E X A B Y T E N E S T")) {
- enable_nest(drive);
- goto retry;
- }
-
/* identification failed? */
if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) {
if (drive->media == ide_disk) {
printk(KERN_WARNING "%s: Unknown device on bus refused identification. Ignoring.\n", drive->name);
drive->dev_flags &= ~IDE_DFLAG_PRESENT;
}
+ } else {
+ if (cmd == ATA_CMD_ID_ATAPI)
+ ide_classify_atapi_dev(drive);
+ else
+ ide_classify_ata_dev(drive);
}
- /* drive was found */
}
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
ide_disk_init_mult_count(drive);
}
- return !!(drive->dev_flags & IDE_DFLAG_PRESENT);
+ return 1;
}
static void hwif_release_dev(struct device *dev)
int ret;
/* register with global device tree */
- strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
- hwif->gendev.driver_data = hwif;
- if (hwif->gendev.parent == NULL) {
- if (hwif->dev)
- hwif->gendev.parent = hwif->dev;
- else
- /* Would like to do = &device_legacy */
- hwif->gendev.parent = NULL;
- }
+ dev_set_name(&hwif->gendev, hwif->name);
+ dev_set_drvdata(&hwif->gendev, hwif);
+ if (hwif->gendev.parent == NULL)
+ hwif->gendev.parent = hwif->dev;
hwif->gendev.release = hwif_release_dev;
+
ret = device_register(&hwif->gendev);
if (ret < 0) {
printk(KERN_WARNING "IDE: %s: device_register error: %d\n",
goto out;
}
- hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev,
- MKDEV(0, 0), hwif, hwif->name);
+ hwif->portdev = device_create(ide_port_class, &hwif->gendev,
+ MKDEV(0, 0), hwif, hwif->name);
if (IS_ERR(hwif->portdev)) {
ret = PTR_ERR(hwif->portdev);
device_unregister(&hwif->gendev);
static int ide_port_wait_ready(ide_hwif_t *hwif)
{
- int unit, rc;
+ const struct ide_tp_ops *tp_ops = hwif->tp_ops;
+ ide_drive_t *drive;
+ int i, rc;
printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name);
return rc;
/* Now make sure both master & slave are ready */
- for (unit = 0; unit < MAX_DRIVES; unit++) {
- ide_drive_t *drive = &hwif->drives[unit];
-
+ ide_port_for_each_dev(i, drive, hwif) {
/* Ignore disks that we will not probe for later. */
if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 ||
(drive->dev_flags & IDE_DFLAG_PRESENT)) {
- SELECT_DRIVE(drive);
- hwif->tp_ops->set_irq(hwif, 1);
+ tp_ops->dev_select(drive);
+ tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
mdelay(2);
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
}
out:
/* Exit function with master reselected (let's be sane) */
- if (unit)
- SELECT_DRIVE(&hwif->drives[0]);
+ if (i)
+ tp_ops->dev_select(hwif->devices[0]);
return rc;
}
void ide_undecoded_slave(ide_drive_t *dev1)
{
- ide_drive_t *dev0 = &dev1->hwif->drives[0];
+ ide_drive_t *dev0 = dev1->hwif->devices[0];
if ((dev1->dn & 1) == 0 || (dev0->dev_flags & IDE_DFLAG_PRESENT) == 0)
return;
static int ide_probe_port(ide_hwif_t *hwif)
{
- unsigned long flags;
+ ide_drive_t *drive;
unsigned int irqd;
- int unit, rc = -ENODEV;
+ int i, rc = -ENODEV;
BUG_ON(hwif->present);
- if ((hwif->drives[0].dev_flags & IDE_DFLAG_NOPROBE) &&
- (hwif->drives[1].dev_flags & IDE_DFLAG_NOPROBE))
+ if ((hwif->devices[0]->dev_flags & IDE_DFLAG_NOPROBE) &&
+ (hwif->devices[1]->dev_flags & IDE_DFLAG_NOPROBE))
return -EACCES;
/*
if (irqd)
disable_irq(hwif->irq);
- local_irq_set(flags);
-
if (ide_port_wait_ready(hwif) == -EBUSY)
printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name);
* Second drive should only exist if first drive was found,
* but a lot of cdrom drives are configured as single slaves.
*/
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
-
+ ide_port_for_each_dev(i, drive, hwif) {
(void) probe_for_drive(drive);
if (drive->dev_flags & IDE_DFLAG_PRESENT)
rc = 0;
}
- local_irq_restore(flags);
-
/*
* Use cached IRQ number. It might be (and is...) changed by probe
* code above
static void ide_port_tune_devices(ide_hwif_t *hwif)
{
const struct ide_port_ops *port_ops = hwif->port_ops;
- int unit;
+ ide_drive_t *drive;
+ int i;
- for (unit = 0; unit < MAX_DRIVES; unit++) {
- ide_drive_t *drive = &hwif->drives[unit];
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ ide_check_nien_quirk_list(drive);
- if (drive->dev_flags & IDE_DFLAG_PRESENT) {
- if (port_ops && port_ops->quirkproc)
- port_ops->quirkproc(drive);
- }
+ if (port_ops && port_ops->quirkproc)
+ port_ops->quirkproc(drive);
}
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
-
- if (drive->dev_flags & IDE_DFLAG_PRESENT) {
- ide_set_max_pio(drive);
-
- drive->dev_flags |= IDE_DFLAG_NICE1;
-
- if (hwif->dma_ops)
- ide_set_dma(drive);
- }
- }
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ ide_set_max_pio(drive);
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
+ drive->dev_flags |= IDE_DFLAG_NICE1;
- if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) ||
- drive->id[ATA_ID_DWORD_IO])
- drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT;
- else
- drive->dev_flags &= ~IDE_DFLAG_NO_IO_32BIT;
+ if (hwif->dma_ops)
+ ide_set_dma(drive);
}
}
/*
- * save_match() is used to simplify logic in init_irq() below.
- *
- * A loophole here is that we may not know about a particular
- * hwif's irq until after that hwif is actually probed/initialized..
- * This could be a problem for the case where an hwif is on a
- * dual interface that requires serialization (eg. cmd640) and another
- * hwif using one of the same irqs is initialized beforehand.
- *
- * This routine detects and reports such situations, but does not fix them.
- */
-static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
-{
- ide_hwif_t *m = *match;
-
- if (m && m->hwgroup && m->hwgroup != new->hwgroup) {
- if (!new->hwgroup)
- return;
- printk(KERN_WARNING "%s: potential IRQ problem with %s and %s\n",
- hwif->name, new->name, m->name);
- }
- if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */
- *match = new;
-}
-
-/*
* init request queue
*/
static int ide_init_queue(ide_drive_t *drive)
{
struct request_queue *q;
- ide_hwif_t *hwif = HWIF(drive);
+ ide_hwif_t *hwif = drive->hwif;
int max_sectors = 256;
int max_sg_entries = PRD_ENTRIES;
* do not.
*/
- q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif));
+ q = blk_init_queue_node(do_ide_request, NULL, hwif_to_node(hwif));
if (!q)
return 1;
if (hwif->rqsize < max_sectors)
max_sectors = hwif->rqsize;
- blk_queue_max_sectors(q, max_sectors);
+ blk_queue_max_hw_sectors(q, max_sectors);
#ifdef CONFIG_PCI
/* When we have an IOMMU, we may have a problem where pci_map_sg()
max_sg_entries >>= 1;
#endif /* CONFIG_PCI */
- blk_queue_max_hw_segments(q, max_sg_entries);
- blk_queue_max_phys_segments(q, max_sg_entries);
+ blk_queue_max_segments(q, max_sg_entries);
/* assign drive queue */
drive->queue = q;
return 0;
}
-static void ide_add_drive_to_hwgroup(ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
-
- spin_lock_irq(&ide_lock);
- if (!hwgroup->drive) {
- /* first drive for hwgroup. */
- drive->next = drive;
- hwgroup->drive = drive;
- hwgroup->hwif = HWIF(hwgroup->drive);
- } else {
- drive->next = hwgroup->drive->next;
- hwgroup->drive->next = drive;
- }
- spin_unlock_irq(&ide_lock);
-}
+static DEFINE_MUTEX(ide_cfg_mtx);
/*
* For any present drive:
* - allocate the block device queue
- * - link drive into the hwgroup
*/
-static void ide_port_setup_devices(ide_hwif_t *hwif)
+static int ide_port_setup_devices(ide_hwif_t *hwif)
{
- int i;
+ ide_drive_t *drive;
+ int i, j = 0;
mutex_lock(&ide_cfg_mtx);
- for (i = 0; i < MAX_DRIVES; i++) {
- ide_drive_t *drive = &hwif->drives[i];
-
- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
+ ide_port_for_each_present_dev(i, drive, hwif) {
if (ide_init_queue(drive)) {
printk(KERN_ERR "ide: failed to init %s\n",
drive->name);
+ drive->dev_flags &= ~IDE_DFLAG_PRESENT;
continue;
}
- ide_add_drive_to_hwgroup(drive);
+ j++;
}
mutex_unlock(&ide_cfg_mtx);
-}
-static ide_hwif_t *ide_ports[MAX_HWIFS];
+ return j;
+}
-void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
+static void ide_host_enable_irqs(struct ide_host *host)
{
- ide_hwgroup_t *hwgroup = hwif->hwgroup;
+ ide_hwif_t *hwif;
+ int i;
- ide_ports[hwif->index] = NULL;
+ ide_host_for_each_port(i, hwif, host) {
+ if (hwif == NULL)
+ continue;
- spin_lock_irq(&ide_lock);
- /*
- * Remove us from the hwgroup, and free
- * the hwgroup if we were the only member
- */
- if (hwif->next == hwif) {
- BUG_ON(hwgroup->hwif != hwif);
- kfree(hwgroup);
- } else {
- /* There is another interface in hwgroup.
- * Unlink us, and set hwgroup->drive and ->hwif to
- * something sane.
- */
- ide_hwif_t *g = hwgroup->hwif;
-
- while (g->next != hwif)
- g = g->next;
- g->next = hwif->next;
- if (hwgroup->hwif == hwif) {
- /* Chose a random hwif for hwgroup->hwif.
- * It's guaranteed that there are no drives
- * left in the hwgroup.
- */
- BUG_ON(hwgroup->drive != NULL);
- hwgroup->hwif = g;
- }
- BUG_ON(hwgroup->hwif == hwif);
+ /* clear any pending IRQs */
+ hwif->tp_ops->read_status(hwif);
+
+ /* unmask IRQs */
+ if (hwif->io_ports.ctl_addr)
+ hwif->tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
}
- spin_unlock_irq(&ide_lock);
}
/*
- * This routine sets up the irq for an ide interface, and creates a new
- * hwgroup for the irq/hwif if none was previously assigned.
- *
- * Much of the code is for correctly detecting/handling irq sharing
- * and irq serialization situations. This is somewhat complex because
- * it handles static as well as dynamic (PCMCIA) IDE interfaces.
+ * This routine sets up the IRQ for an IDE interface.
*/
static int init_irq (ide_hwif_t *hwif)
{
struct ide_io_ports *io_ports = &hwif->io_ports;
- unsigned int index;
- ide_hwgroup_t *hwgroup;
- ide_hwif_t *match = NULL;
+ struct ide_host *host = hwif->host;
+ irq_handler_t irq_handler = host->irq_handler;
+ int sa = host->irq_flags;
- mutex_lock(&ide_cfg_mtx);
- hwif->hwgroup = NULL;
+ if (irq_handler == NULL)
+ irq_handler = ide_intr;
- /*
- * Group up with any other hwifs that share our irq(s).
- */
- for (index = 0; index < MAX_HWIFS; index++) {
- ide_hwif_t *h = ide_ports[index];
-
- if (h && h->hwgroup) { /* scan only initialized ports */
- if (hwif->irq == h->irq) {
- hwif->sharing_irq = h->sharing_irq = 1;
- if (hwif->chipset != ide_pci ||
- h->chipset != ide_pci) {
- save_match(hwif, h, &match);
- }
- }
- if (hwif->serialized) {
- if (hwif->mate && hwif->mate->irq == h->irq)
- save_match(hwif, h, &match);
- }
- if (h->serialized) {
- if (h->mate && hwif->irq == h->mate->irq)
- save_match(hwif, h, &match);
- }
- }
- }
-
- /*
- * If we are still without a hwgroup, then form a new one
- */
- if (match) {
- hwgroup = match->hwgroup;
- hwif->hwgroup = hwgroup;
- /*
- * Link us into the hwgroup.
- * This must be done early, do ensure that unexpected_intr
- * can find the hwif and prevent irq storms.
- * No drives are attached to the new hwif, choose_drive
- * can't do anything stupid (yet).
- * Add ourself as the 2nd entry to the hwgroup->hwif
- * linked list, the first entry is the hwif that owns
- * hwgroup->handler - do not change that.
- */
- spin_lock_irq(&ide_lock);
- hwif->next = hwgroup->hwif->next;
- hwgroup->hwif->next = hwif;
- BUG_ON(hwif->next == hwif);
- spin_unlock_irq(&ide_lock);
- } else {
- hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO,
- hwif_to_node(hwif));
- if (hwgroup == NULL)
- goto out_up;
-
- hwif->hwgroup = hwgroup;
- hwgroup->hwif = hwif->next = hwif;
-
- init_timer(&hwgroup->timer);
- hwgroup->timer.function = &ide_timer_expiry;
- hwgroup->timer.data = (unsigned long) hwgroup;
- }
-
- ide_ports[hwif->index] = hwif;
-
- /*
- * Allocate the irq, if not already obtained for another hwif
- */
- if (!match || match->irq != hwif->irq) {
- int sa = 0;
-#if defined(__mc68000__)
- sa = IRQF_SHARED;
-#endif /* __mc68000__ */
-
- if (hwif->chipset == ide_pci || hwif->chipset == ide_cmd646 ||
- hwif->chipset == ide_ali14xx)
- sa = IRQF_SHARED;
-
- if (io_ports->ctl_addr)
- hwif->tp_ops->set_irq(hwif, 1);
-
- if (request_irq(hwif->irq,&ide_intr,sa,hwif->name,hwgroup))
- goto out_unlink;
- }
-
- if (!hwif->rqsize) {
- if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
- (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA))
- hwif->rqsize = 256;
- else
- hwif->rqsize = 65536;
- }
+ if (request_irq(hwif->irq, irq_handler, sa, hwif->name, hwif))
+ goto out_up;
#if !defined(__mc68000__)
printk(KERN_INFO "%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name,
printk(KERN_INFO "%s at 0x%08lx on irq %d", hwif->name,
io_ports->data_addr, hwif->irq);
#endif /* __mc68000__ */
- if (match)
- printk(KERN_CONT " (%sed with %s)",
- hwif->sharing_irq ? "shar" : "serializ", match->name);
+ if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE)
+ printk(KERN_CONT " (serialized)");
printk(KERN_CONT "\n");
- mutex_unlock(&ide_cfg_mtx);
return 0;
-out_unlink:
- ide_remove_port_from_hwgroup(hwif);
out_up:
- mutex_unlock(&ide_cfg_mtx);
return 1;
}
{
ide_hwif_t *hwif = data;
int unit = *part >> PARTN_BITS;
- ide_drive_t *drive = &hwif->drives[unit];
+ ide_drive_t *drive = hwif->devices[unit];
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
return NULL;
if (drive->media == ide_disk)
request_module("ide-disk");
- if (drive->dev_flags & IDE_DFLAG_SCSI)
- request_module("ide-scsi");
if (drive->media == ide_cdrom || drive->media == ide_optical)
request_module("ide-cd");
if (drive->media == ide_tape)
EXPORT_SYMBOL_GPL(ide_init_disk);
-static void ide_remove_drive_from_hwgroup(ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
-
- if (drive == drive->next) {
- /* special case: last drive from hwgroup. */
- BUG_ON(hwgroup->drive != drive);
- hwgroup->drive = NULL;
- } else {
- ide_drive_t *walk;
-
- walk = hwgroup->drive;
- while (walk->next != drive)
- walk = walk->next;
- walk->next = drive->next;
- if (hwgroup->drive == drive) {
- hwgroup->drive = drive->next;
- hwgroup->hwif = hwgroup->drive->hwif;
- }
- }
- BUG_ON(hwgroup->drive == drive);
-}
-
static void drive_release_dev (struct device *dev)
{
ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
ide_proc_unregister_device(drive);
- spin_lock_irq(&ide_lock);
- ide_remove_drive_from_hwgroup(drive);
- kfree(drive->id);
- drive->id = NULL;
- drive->dev_flags &= ~IDE_DFLAG_PRESENT;
- /* Messed up locking ... */
- spin_unlock_irq(&ide_lock);
blk_cleanup_queue(drive->queue);
- spin_lock_irq(&ide_lock);
drive->queue = NULL;
- spin_unlock_irq(&ide_lock);
+
+ drive->dev_flags &= ~IDE_DFLAG_PRESENT;
complete(&drive->gendev_rel_comp);
}
static int hwif_init(ide_hwif_t *hwif)
{
- int old_irq;
-
if (!hwif->irq) {
- hwif->irq = __ide_default_irq(hwif->io_ports.data_addr);
- if (!hwif->irq) {
- printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name);
- return 0;
- }
+ printk(KERN_ERR "%s: disabled, no IRQ\n", hwif->name);
+ return 0;
}
if (register_blkdev(hwif->major, hwif->name))
sg_init_table(hwif->sg_table, hwif->sg_max_nents);
- if (init_irq(hwif) == 0)
- goto done;
-
- old_irq = hwif->irq;
- /*
- * It failed to initialise. Find the default IRQ for
- * this port and try that.
- */
- hwif->irq = __ide_default_irq(hwif->io_ports.data_addr);
- if (!hwif->irq) {
- printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n",
- hwif->name, old_irq);
- goto out;
- }
if (init_irq(hwif)) {
- printk(KERN_ERR "%s: probed IRQ %d and default IRQ %d failed\n",
- hwif->name, old_irq, hwif->irq);
+ printk(KERN_ERR "%s: disabled, unable to get IRQ %d\n",
+ hwif->name, hwif->irq);
goto out;
}
- printk(KERN_WARNING "%s: probed IRQ %d failed, using default\n",
- hwif->name, hwif->irq);
-done:
blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS,
THIS_MODULE, ata_probe, ata_lock, hwif);
return 1;
static void hwif_register_devices(ide_hwif_t *hwif)
{
+ ide_drive_t *drive;
unsigned int i;
- for (i = 0; i < MAX_DRIVES; i++) {
- ide_drive_t *drive = &hwif->drives[i];
+ ide_port_for_each_present_dev(i, drive, hwif) {
struct device *dev = &drive->gendev;
int ret;
- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
- snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i);
+ dev_set_name(dev, "%u.%u", hwif->index, i);
+ dev_set_drvdata(dev, drive);
dev->parent = &hwif->gendev;
dev->bus = &ide_bus_type;
- dev->driver_data = drive;
dev->release = drive_release_dev;
ret = device_register(dev);
static void ide_port_init_devices(ide_hwif_t *hwif)
{
const struct ide_port_ops *port_ops = hwif->port_ops;
+ ide_drive_t *drive;
int i;
- for (i = 0; i < MAX_DRIVES; i++) {
- ide_drive_t *drive = &hwif->drives[i];
-
+ ide_port_for_each_dev(i, drive, hwif) {
drive->dn = i + hwif->channel * 2;
if (hwif->host_flags & IDE_HFLAG_IO_32BIT)
drive->io_32bit = 1;
+ if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT)
+ drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT;
if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS)
drive->dev_flags |= IDE_DFLAG_UNMASK;
if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS)
drive->dev_flags |= IDE_DFLAG_NO_UNMASK;
+ drive->pio_mode = XFER_PIO_0;
+
if (port_ops && port_ops->init_dev)
port_ops->init_dev(drive);
}
{
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);
- if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) ||
- (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS))
- hwif->irq = port ? 15 : 14;
-
/* ->host_flags may be set by ->init_iops (or even earlier...) */
hwif->host_flags |= d->host_flags;
hwif->pio_mask = d->pio_mask;
hwif->tp_ops = d->tp_ops;
/* ->set_pio_mode for DTC2278 is currently limited to port 0 */
- if (hwif->chipset != ide_dtc2278 || hwif->channel == 0)
+ if ((hwif->host_flags & IDE_HFLAG_DTC2278) == 0 || hwif->channel == 0)
hwif->port_ops = d->port_ops;
hwif->swdma_mask = d->swdma_mask;
if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) {
int rc;
+ hwif->dma_ops = d->dma_ops;
+
if (d->init_dma)
rc = d->init_dma(hwif, d);
else
if (rc < 0) {
printk(KERN_INFO "%s: DMA disabled\n", hwif->name);
+
+ hwif->dma_ops = NULL;
hwif->dma_base = 0;
hwif->swdma_mask = 0;
hwif->mwdma_mask = 0;
hwif->ultra_mask = 0;
- } else if (d->dma_ops)
- hwif->dma_ops = d->dma_ops;
+ }
}
if ((d->host_flags & IDE_HFLAG_SERIALIZE) ||
- ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) {
- if (hwif->mate)
- hwif->mate->serialized = hwif->serialized = 1;
- }
+ ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base))
+ hwif->host->host_flags |= IDE_HFLAG_SERIALIZE;
- if (d->host_flags & IDE_HFLAG_RQSIZE_256)
- hwif->rqsize = 256;
+ if (d->max_sectors)
+ hwif->rqsize = d->max_sectors;
+ else {
+ if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+ (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA))
+ hwif->rqsize = 256;
+ else
+ hwif->rqsize = 65536;
+ }
/* call chipset specific routine for each enabled port */
if (d->init_hwif)
}
}
-static ssize_t store_delete_devices(struct device *portdev,
- struct device_attribute *attr,
- const char *buf, size_t n)
-{
- ide_hwif_t *hwif = dev_get_drvdata(portdev);
-
- if (strncmp(buf, "1", n))
- return -EINVAL;
+static const u8 ide_hwif_to_major[] =
+ { IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR, IDE4_MAJOR,
+ IDE5_MAJOR, IDE6_MAJOR, IDE7_MAJOR, IDE8_MAJOR, IDE9_MAJOR };
- ide_port_unregister_devices(hwif);
-
- return n;
-};
+static void ide_port_init_devices_data(ide_hwif_t *hwif)
+{
+ ide_drive_t *drive;
+ int i;
-static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices);
+ ide_port_for_each_dev(i, drive, hwif) {
+ u8 j = (hwif->index * MAX_DRIVES) + i;
+ u16 *saved_id = drive->id;
+
+ memset(drive, 0, sizeof(*drive));
+ memset(saved_id, 0, SECTOR_SIZE);
+ drive->id = saved_id;
+
+ drive->media = ide_disk;
+ drive->select = (i << 4) | ATA_DEVICE_OBS;
+ drive->hwif = hwif;
+ drive->ready_stat = ATA_DRDY;
+ drive->bad_wstat = BAD_W_STAT;
+ drive->special_flags = IDE_SFLAG_RECALIBRATE |
+ IDE_SFLAG_SET_GEOMETRY;
+ drive->name[0] = 'h';
+ drive->name[1] = 'd';
+ drive->name[2] = 'a' + j;
+ drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
+
+ INIT_LIST_HEAD(&drive->list);
+ init_completion(&drive->gendev_rel_comp);
+ }
+}
-static ssize_t store_scan(struct device *portdev,
- struct device_attribute *attr,
- const char *buf, size_t n)
+static void ide_init_port_data(ide_hwif_t *hwif, unsigned int index)
{
- ide_hwif_t *hwif = dev_get_drvdata(portdev);
+ /* fill in any non-zero initial values */
+ hwif->index = index;
+ hwif->major = ide_hwif_to_major[index];
- if (strncmp(buf, "1", n))
- return -EINVAL;
+ hwif->name[0] = 'i';
+ hwif->name[1] = 'd';
+ hwif->name[2] = 'e';
+ hwif->name[3] = '0' + index;
- ide_port_unregister_devices(hwif);
- ide_port_scan(hwif);
+ spin_lock_init(&hwif->lock);
- return n;
-};
+ init_timer(&hwif->timer);
+ hwif->timer.function = &ide_timer_expiry;
+ hwif->timer.data = (unsigned long)hwif;
-static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
+ init_completion(&hwif->gendev_rel_comp);
-static struct device_attribute *ide_port_attrs[] = {
- &dev_attr_delete_devices,
- &dev_attr_scan,
- NULL
-};
+ hwif->tp_ops = &default_tp_ops;
-static int ide_sysfs_register_port(ide_hwif_t *hwif)
-{
- int i, uninitialized_var(rc);
-
- for (i = 0; ide_port_attrs[i]; i++) {
- rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
- if (rc)
- break;
- }
+ ide_port_init_devices_data(hwif);
+}
- return rc;
+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->dev = hw->dev;
+ hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
+ hwif->config_data = hw->config;
}
static unsigned int ide_indexes;
{
int idx = -ENOENT;
u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1;
- u8 i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0;;
+ u8 i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0;
/*
* Claim an unassigned slot.
mutex_unlock(&ide_cfg_mtx);
}
-struct ide_host *ide_host_alloc(const struct ide_port_info *d, hw_regs_t **hws)
+static void ide_port_free_devices(ide_hwif_t *hwif)
+{
+ ide_drive_t *drive;
+ int i;
+
+ ide_port_for_each_dev(i, drive, hwif) {
+ kfree(drive->id);
+ kfree(drive);
+ }
+}
+
+static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
+{
+ int i;
+
+ for (i = 0; i < MAX_DRIVES; i++) {
+ ide_drive_t *drive;
+
+ drive = kzalloc_node(sizeof(*drive), GFP_KERNEL, node);
+ if (drive == NULL)
+ goto out_nomem;
+
+ /*
+ * In order to keep things simple we have an id
+ * block for all drives at all times. If the device
+ * is pre ATA or refuses ATA/ATAPI identify we
+ * will add faked data to this.
+ *
+ * Also note that 0 everywhere means "can't do X"
+ */
+ drive->id = kzalloc_node(SECTOR_SIZE, GFP_KERNEL, node);
+ if (drive->id == NULL)
+ goto out_nomem;
+
+ hwif->devices[i] = drive;
+ }
+ return 0;
+
+out_nomem:
+ ide_port_free_devices(hwif);
+ return -ENOMEM;
+}
+
+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;
+ int node = dev ? dev_to_node(dev) : -1;
int i;
- host = kzalloc(sizeof(*host), GFP_KERNEL);
+ host = kzalloc_node(sizeof(*host), GFP_KERNEL, node);
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;
if (hws[i] == NULL)
continue;
- hwif = kzalloc(sizeof(*hwif), GFP_KERNEL);
+ hwif = kzalloc_node(sizeof(*hwif), GFP_KERNEL, node);
if (hwif == NULL)
continue;
+ if (ide_port_alloc_devices(hwif, node) < 0) {
+ kfree(hwif);
+ continue;
+ }
+
idx = ide_find_port_slot(d);
if (idx < 0) {
printk(KERN_ERR "%s: no free slot for interface\n",
d ? d->name : "ide");
+ ide_port_free_devices(hwif);
kfree(hwif);
continue;
}
return NULL;
}
- if (hws[0])
- host->dev[0] = hws[0]->dev;
+ host->dev[0] = dev;
if (d) {
host->init_chipset = d->init_chipset;
+ host->get_lock = d->get_lock;
+ host->release_lock = d->release_lock;
host->host_flags = d->host_flags;
+ host->irq_flags = d->irq_flags;
}
return host;
}
EXPORT_SYMBOL_GPL(ide_host_alloc);
+static void ide_port_free(ide_hwif_t *hwif)
+{
+ ide_port_free_devices(hwif);
+ ide_free_port_slot(hwif->index);
+ kfree(hwif);
+}
+
+static void ide_disable_port(ide_hwif_t *hwif)
+{
+ struct ide_host *host = hwif->host;
+ int i;
+
+ printk(KERN_INFO "%s: disabling port\n", hwif->name);
+
+ for (i = 0; i < MAX_HOST_PORTS; i++) {
+ if (host->ports[i] == hwif) {
+ host->ports[i] = NULL;
+ host->n_ports--;
+ }
+ }
+
+ ide_port_free(hwif);
+}
+
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;
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
-
+ ide_host_for_each_port(i, hwif, host) {
if (hwif == NULL) {
mate = NULL;
continue;
ide_init_port_hw(hwif, hws[i]);
ide_port_apply_params(hwif);
- if (d == NULL) {
- mate = NULL;
- } else {
- if ((i & 1) && mate) {
- hwif->mate = mate;
- mate->mate = hwif;
- }
+ if ((i & 1) && mate) {
+ hwif->mate = mate;
+ mate->mate = hwif;
+ }
- mate = (i & 1) ? NULL : hwif;
+ mate = (i & 1) ? NULL : hwif;
- ide_init_port(hwif, i & 1, d);
- ide_port_cable_detect(hwif);
- }
+ ide_init_port(hwif, i & 1, d);
+ ide_port_cable_detect(hwif);
+
+ hwif->port_flags |= IDE_PFLAG_PROBING;
ide_port_init_devices(hwif);
}
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
-
+ ide_host_for_each_port(i, hwif, host) {
if (hwif == NULL)
continue;
if (ide_probe_port(hwif) == 0)
hwif->present = 1;
- if (hwif->chipset != ide_4drives || !hwif->mate ||
- !hwif->mate->present)
- ide_register_port(hwif);
+ hwif->port_flags &= ~IDE_PFLAG_PROBING;
+
+ if ((hwif->host_flags & IDE_HFLAG_4DRIVES) == 0 ||
+ hwif->mate == NULL || hwif->mate->present == 0) {
+ if (ide_register_port(hwif)) {
+ ide_disable_port(hwif);
+ continue;
+ }
+ }
if (hwif->present)
ide_port_tune_devices(hwif);
}
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
+ ide_host_enable_irqs(host);
+ ide_host_for_each_port(i, hwif, host) {
if (hwif == NULL)
continue;
if (hwif_init(hwif) == 0) {
printk(KERN_INFO "%s: failed to initialize IDE "
"interface\n", hwif->name);
- hwif->present = 0;
+ device_unregister(&hwif->gendev);
+ ide_disable_port(hwif);
continue;
}
- j++;
-
if (hwif->present)
- ide_port_setup_devices(hwif);
+ if (ide_port_setup_devices(hwif) == 0) {
+ hwif->present = 0;
+ continue;
+ }
- ide_acpi_init(hwif);
+ j++;
+
+ ide_acpi_init_port(hwif);
if (hwif->present)
ide_acpi_port_init_devices(hwif);
}
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
-
+ ide_host_for_each_port(i, hwif, host) {
if (hwif == NULL)
continue;
- if (hwif->chipset == ide_unknown)
- hwif->chipset = ide_generic;
-
if (hwif->present)
hwif_register_devices(hwif);
}
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
-
+ ide_host_for_each_port(i, hwif, host) {
if (hwif == NULL)
continue;
}
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;
}
EXPORT_SYMBOL_GPL(ide_host_add);
-void ide_host_free(struct ide_host *host)
+static void __ide_port_unregister_devices(ide_hwif_t *hwif)
{
- ide_hwif_t *hwif;
+ ide_drive_t *drive;
int i;
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- hwif = host->ports[i];
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ device_unregister(&drive->gendev);
+ wait_for_completion(&drive->gendev_rel_comp);
+ }
+}
- if (hwif == NULL)
- continue;
+void ide_port_unregister_devices(ide_hwif_t *hwif)
+{
+ mutex_lock(&ide_cfg_mtx);
+ __ide_port_unregister_devices(hwif);
+ hwif->present = 0;
+ ide_port_init_devices_data(hwif);
+ mutex_unlock(&ide_cfg_mtx);
+}
+EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
+
+/**
+ * ide_unregister - free an IDE interface
+ * @hwif: IDE interface
+ *
+ * Perform the final unregister of an IDE interface.
+ *
+ * Locking:
+ * The caller must not hold the IDE locks.
+ *
+ * It is up to the caller to be sure there is no pending I/O here,
+ * and that the interface will not be reopened (present/vanishing
+ * locking isn't yet done BTW).
+ */
- ide_free_port_slot(hwif->index);
- kfree(hwif);
+static void ide_unregister(ide_hwif_t *hwif)
+{
+ BUG_ON(in_interrupt());
+ BUG_ON(irqs_disabled());
+
+ mutex_lock(&ide_cfg_mtx);
+
+ if (hwif->present) {
+ __ide_port_unregister_devices(hwif);
+ hwif->present = 0;
+ }
+
+ ide_proc_unregister_port(hwif);
+
+ free_irq(hwif->irq, hwif);
+
+ device_unregister(hwif->portdev);
+ device_unregister(&hwif->gendev);
+ wait_for_completion(&hwif->gendev_rel_comp);
+
+ /*
+ * Remove us from the kernel's knowledge
+ */
+ blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
+ kfree(hwif->sg_table);
+ unregister_blkdev(hwif->major, hwif->name);
+
+ ide_release_dma_engine(hwif);
+
+ mutex_unlock(&ide_cfg_mtx);
+}
+
+void ide_host_free(struct ide_host *host)
+{
+ ide_hwif_t *hwif;
+ int i;
+
+ ide_host_for_each_port(i, hwif, host) {
+ if (hwif)
+ ide_port_free(hwif);
}
kfree(host);
void ide_host_remove(struct ide_host *host)
{
+ ide_hwif_t *hwif;
int i;
- for (i = 0; i < MAX_HOST_PORTS; i++) {
- if (host->ports[i])
- ide_unregister(host->ports[i]);
+ ide_host_for_each_port(i, hwif, host) {
+ if (hwif)
+ ide_unregister(hwif);
}
ide_host_free(host);
void ide_port_scan(ide_hwif_t *hwif)
{
+ int rc;
+
ide_port_apply_params(hwif);
ide_port_cable_detect(hwif);
+
+ hwif->port_flags |= IDE_PFLAG_PROBING;
+
ide_port_init_devices(hwif);
- if (ide_probe_port(hwif) < 0)
+ rc = ide_probe_port(hwif);
+
+ hwif->port_flags &= ~IDE_PFLAG_PROBING;
+
+ if (rc < 0)
return;
hwif->present = 1;
ide_port_tune_devices(hwif);
- ide_acpi_port_init_devices(hwif);
ide_port_setup_devices(hwif);
+ ide_acpi_port_init_devices(hwif);
hwif_register_devices(hwif);
ide_proc_port_register_devices(hwif);
}
EXPORT_SYMBOL_GPL(ide_port_scan);
-
-static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
- u8 port_no, const struct ide_port_info *d,
- unsigned long config)
-{
- unsigned long base, ctl;
- int irq;
-
- if (port_no == 0) {
- base = 0x1f0;
- ctl = 0x3f6;
- irq = 14;
- } else {
- base = 0x170;
- ctl = 0x376;
- irq = 15;
- }
-
- if (!request_region(base, 8, d->name)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
- d->name, base, base + 7);
- return;
- }
-
- if (!request_region(ctl, 1, d->name)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
- d->name, ctl);
- release_region(base, 8);
- return;
- }
-
- 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 };
-
- memset(&hw, 0, sizeof(hw));
-
- if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
- ide_legacy_init_one(hws, &hw[0], 0, d, config);
- ide_legacy_init_one(hws, &hw[1], 1, d, config);
-
- if (hws[0] == NULL && hws[1] == NULL &&
- (d->host_flags & IDE_HFLAG_SINGLE))
- return -ENOENT;
-
- return ide_host_add(d, hws, NULL);
-}
-EXPORT_SYMBOL_GPL(ide_legacy_device_add);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff