/* --------------------------------------------------------------------
* SystemACE device setup/teardown code
*/
static int __devinit ace_setup(struct ace_device *ace)
{
u16 version;
u16 val;
int rc;
dev_dbg(ace->dev, "ace_setup(ace=0x%p)\n", ace);
dev_dbg(ace->dev, "physaddr=0x%llx irq=%i\n",
(unsigned long long)ace->physaddr, ace->irq);
spin_lock_init(&ace->lock);
init_completion(&ace->id_completion);
/*
* Map the device
*/
ace->baseaddr = ioremap(ace->physaddr, 0x80);
if (!ace->baseaddr)
goto err_ioremap;
/*
* Initialize the state machine tasklet and stall timer
*/
tasklet_init(&ace->fsm_tasklet, ace_fsm_tasklet, (unsigned long)ace);
setup_timer(&ace->stall_timer, ace_stall_timer, (unsigned long)ace);
/*
* Initialize the request queue
*/
ace->queue = blk_init_queue(ace_request, &ace->lock);
if (ace->queue == NULL)
goto err_blk_initq;
blk_queue_hardsect_size(ace->queue, 512);
/*
* Allocate and initialize GD structure
*/
ace->gd = alloc_disk(ACE_NUM_MINORS);
if (!ace->gd)
goto err_alloc_disk;
ace->gd->major = ace_major;
ace->gd->first_minor = ace->id * ACE_NUM_MINORS;
ace->gd->fops = &ace_fops;
ace->gd->queue = ace->queue;
ace->gd->private_data = ace;
snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');
/* set bus width */
if (ace->bus_width == ACE_BUS_WIDTH_16) {
/* 0x0101 should work regardless of endianess */
ace_out_le16(ace, ACE_BUSMODE, 0x0101);
/* read it back to determine endianess */
if (ace_in_le16(ace, ACE_BUSMODE) == 0x0001)
ace->reg_ops = &ace_reg_le16_ops;
else
ace->reg_ops = &ace_reg_be16_ops;
} else {
ace_out_8(ace, ACE_BUSMODE, 0x00);
ace->reg_ops = &ace_reg_8_ops;
}
/* Make sure version register is sane */
version = ace_in(ace, ACE_VERSION);
if ((version == 0) || (version == 0xFFFF))
goto err_read;
/* Put sysace in a sane state by clearing most control reg bits */
ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE |
ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ);
/* Now we can hook up the irq handler */
if (ace->irq != NO_IRQ) {
rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
if (rc) {
/* Failure - fall back to polled mode */
dev_err(ace->dev, "request_irq failed\n");
ace->irq = NO_IRQ;
}
}
/* Enable interrupts */
val = ace_in(ace, ACE_CTRL);
val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ;
ace_out(ace, ACE_CTRL, val);
/* Print the identification */
dev_info(ace->dev, "Xilinx SystemACE revision %i.%i.%i\n",
(version >> 12) & 0xf, (version >> 8) & 0x0f, version & 0xff);
dev_dbg(ace->dev, "physaddr 0x%llx, mapped to 0x%p, irq=%i\n",
(unsigned long long) ace->physaddr, ace->baseaddr, ace->irq);
ace->media_change = 1;
ace_revalidate_disk(ace->gd);
/* Make the sysace device 'live' */
add_disk(ace->gd);
return 0;
err_read:
put_disk(ace->gd);
err_alloc_disk:
blk_cleanup_queue(ace->queue);
err_blk_initq:
iounmap(ace->baseaddr);
err_ioremap:
dev_info(ace->dev, "xsysace: error initializing device at 0x%llx\n",
(unsigned long long) ace->physaddr);
return -ENOMEM;
}
static void __exit simp_blkdev_exit(void)
{
del_gendisk(simp_blkdev_disk);
put_disk(simp_blkdev_disk);
blk_cleanup_queue(simp_blkdev_queue);
}
/* pdev is NULL for eisa */
static int __init cpqarray_register_ctlr( int i, struct pci_dev *pdev)
{
struct request_queue *q;
int j;
/*
* register block devices
* Find disks and fill in structs
* Get an interrupt, set the Q depth and get into /proc
*/
/* If this successful it should insure that we are the only */
/* instance of the driver */
if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
goto Enomem4;
}
hba[i]->access.set_intr_mask(hba[i], 0);
if (request_irq(hba[i]->intr, do_ida_intr,
IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i]))
{
printk(KERN_ERR "cpqarray: Unable to get irq %d for %s\n",
hba[i]->intr, hba[i]->devname);
goto Enomem3;
}
for (j=0; j<NWD; j++) {
ida_gendisk[i][j] = alloc_disk(1 << NWD_SHIFT);
if (!ida_gendisk[i][j])
goto Enomem2;
}
hba[i]->cmd_pool = pci_alloc_consistent(
hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t),
&(hba[i]->cmd_pool_dhandle));
hba[i]->cmd_pool_bits = kcalloc(
DIV_ROUND_UP(NR_CMDS, BITS_PER_LONG), sizeof(unsigned long),
GFP_KERNEL);
if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool)
goto Enomem1;
memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t));
printk(KERN_INFO "cpqarray: Finding drives on %s",
hba[i]->devname);
spin_lock_init(&hba[i]->lock);
q = blk_init_queue(do_ida_request, &hba[i]->lock);
if (!q)
goto Enomem1;
hba[i]->queue = q;
q->queuedata = hba[i];
getgeometry(i);
start_fwbk(i);
ida_procinit(i);
if (pdev)
blk_queue_bounce_limit(q, hba[i]->pci_dev->dma_mask);
/* This is a hardware imposed limit. */
blk_queue_max_hw_segments(q, SG_MAX);
/* This is a driver limit and could be eliminated. */
blk_queue_max_phys_segments(q, SG_MAX);
init_timer(&hba[i]->timer);
hba[i]->timer.expires = jiffies + IDA_TIMER;
hba[i]->timer.data = (unsigned long)hba[i];
hba[i]->timer.function = ida_timer;
add_timer(&hba[i]->timer);
/* Enable IRQ now that spinlock and rate limit timer are set up */
hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
for(j=0; j<NWD; j++) {
struct gendisk *disk = ida_gendisk[i][j];
drv_info_t *drv = &hba[i]->drv[j];
sprintf(disk->disk_name, "ida/c%dd%d", i, j);
disk->major = COMPAQ_SMART2_MAJOR + i;
disk->first_minor = j<<NWD_SHIFT;
disk->fops = &ida_fops;
if (j && !drv->nr_blks)
continue;
blk_queue_logical_block_size(hba[i]->queue, drv->blk_size);
set_capacity(disk, drv->nr_blks);
disk->queue = hba[i]->queue;
disk->private_data = drv;
add_disk(disk);
}
/* done ! */
return(i);
Enomem1:
nr_ctlr = i;
kfree(hba[i]->cmd_pool_bits);
if (hba[i]->cmd_pool)
pci_free_consistent(hba[i]->pci_dev, NR_CMDS*sizeof(cmdlist_t),
hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle);
Enomem2:
while (j--) {
put_disk(ida_gendisk[i][j]);
ida_gendisk[i][j] = NULL;
}
free_irq(hba[i]->intr, hba[i]);
Enomem3:
unregister_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname);
Enomem4:
if (pdev)
pci_set_drvdata(pdev, NULL);
release_io_mem(hba[i]);
free_hba(i);
printk( KERN_ERR "cpqarray: out of memory");
return -1;
}
static int htifblk_probe(struct device *dev)
{
static unsigned int index = 0;
static const char prefix[] = " size=";
struct htif_device *htif_dev;
struct htifblk_device *htifblk_dev;
struct gendisk *disk;
struct request_queue *queue;
const char *str;
u64 size;
int ret;
dev_info(dev, "detected disk\n");
htif_dev = to_htif_dev(dev);
str = strstr(htif_dev->id, prefix);
if (unlikely(str == NULL
|| kstrtou64(str + sizeof(prefix) - 1, 10, &size))) {
dev_err(dev, "error determining size of disk\n");
return -ENODEV;
}
if (unlikely(size & (SECTOR_SIZE - 1))) {
dev_warn(dev, "disk size not a multiple of sector size:"
" %llu\n", size);
}
ret = -ENOMEM;
htifblk_dev = devm_kzalloc(dev, sizeof(struct htifblk_device), GFP_KERNEL);
if (unlikely(htifblk_dev == NULL))
goto out;
htifblk_dev->size = size;
htifblk_dev->dev = htif_dev;
htifblk_dev->tag = index;
spin_lock_init(&htifblk_dev->lock);
disk = alloc_disk(1);
if (unlikely(disk == NULL))
goto out;
queue = blk_init_queue(htifblk_request, &htifblk_dev->lock);
if (unlikely(queue == NULL))
goto out_put_disk;
queue->queuedata = htifblk_dev;
blk_queue_max_segments(queue, 1);
blk_queue_dma_alignment(queue, HTIF_ALIGN - 1);
disk->queue = queue;
disk->major = major;
disk->minors = 1;
disk->first_minor = 0;
disk->fops = &htifblk_fops;
set_capacity(disk, size >> SECTOR_SIZE_SHIFT);
snprintf(disk->disk_name, DISK_NAME_LEN - 1, "htifblk%u", index++);
htifblk_dev->disk = disk;
add_disk(disk);
dev_info(dev, "added %s\n", disk->disk_name);
ret = htif_request_irq(htif_dev, htifblk_isr);
if (unlikely(ret))
goto out_del_disk;
dev_set_drvdata(dev, htifblk_dev);
return 0;
out_del_disk:
del_gendisk(disk);
blk_cleanup_queue(disk->queue);
out_put_disk:
put_disk(disk);
out:
return ret;
}
static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
{
struct mmc_blk_data *md;
int devidx, ret;
devidx = find_first_zero_bit(dev_use, MMC_NUM_MINORS);
if (devidx >= MMC_NUM_MINORS)
return ERR_PTR(-ENOSPC);
__set_bit(devidx, dev_use);
md = kmalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
if (!md) {
ret = -ENOMEM;
goto out;
}
memset(md, 0, sizeof(struct mmc_blk_data));
/*
* Set the read-only status based on the supported commands
* and the write protect switch.
*/
md->read_only = mmc_blk_readonly(card);
/*
* Both SD and MMC specifications state (although a bit
* unclearly in the MMC case) that a block size of 512
* bytes must always be supported by the card.
*/
md->block_bits = 9;
md->disk = alloc_disk(1 << MMC_SHIFT);
if (md->disk == NULL) {
ret = -ENOMEM;
goto err_kfree;
}
spin_lock_init(&md->lock);
md->usage = 1;
ret = mmc_init_queue(&md->queue, card, &md->lock);
if (ret)
goto err_putdisk;
md->queue.prep_fn = mmc_blk_prep_rq;
md->queue.issue_fn = mmc_blk_issue_rq;
md->queue.data = md;
md->disk->major = major;
md->disk->first_minor = devidx << MMC_SHIFT;
md->disk->fops = &mmc_bdops;
md->disk->private_data = md;
md->disk->queue = md->queue.queue;
md->disk->driverfs_dev = &card->dev;
/*
* As discussed on lkml, GENHD_FL_REMOVABLE should:
*
* - be set for removable media with permanent block devices
* - be unset for removable block devices with permanent media
*
* Since MMC block devices clearly fall under the second
* case, we do not set GENHD_FL_REMOVABLE. Userspace
* should use the block device creation/destruction hotplug
* messages to tell when the card is present.
*/
sprintf(md->disk->disk_name, "mmcblk%d", devidx);
blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits);
/*
* The CSD capacity field is in units of read_blkbits.
* set_capacity takes units of 512 bytes.
*/
set_capacity(md->disk, card->csd.capacity << (card->csd.read_blkbits - 9));
return md;
err_putdisk:
put_disk(md->disk);
err_kfree:
kfree(md);
out:
return ERR_PTR(ret);
}
static int __devinit ace_setup(struct ace_device *ace)
{
u16 version;
u16 val;
int rc;
dev_dbg(ace->dev, "ace_setup(ace=0x%p)\n", ace);
dev_dbg(ace->dev, "physaddr=0x%llx irq=%i\n",
(unsigned long long)ace->physaddr, ace->irq);
spin_lock_init(&ace->lock);
init_completion(&ace->id_completion);
ace->baseaddr = ioremap(ace->physaddr, 0x80);
if (!ace->baseaddr)
goto err_ioremap;
tasklet_init(&ace->fsm_tasklet, ace_fsm_tasklet, (unsigned long)ace);
setup_timer(&ace->stall_timer, ace_stall_timer, (unsigned long)ace);
ace->queue = blk_init_queue(ace_request, &ace->lock);
if (ace->queue == NULL)
goto err_blk_initq;
blk_queue_logical_block_size(ace->queue, 512);
ace->gd = alloc_disk(ACE_NUM_MINORS);
if (!ace->gd)
goto err_alloc_disk;
ace->gd->major = ace_major;
ace->gd->first_minor = ace->id * ACE_NUM_MINORS;
ace->gd->fops = &ace_fops;
ace->gd->queue = ace->queue;
ace->gd->private_data = ace;
snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');
if (ace->bus_width == ACE_BUS_WIDTH_16) {
ace_out_le16(ace, ACE_BUSMODE, 0x0101);
if (ace_in_le16(ace, ACE_BUSMODE) == 0x0001)
ace->reg_ops = &ace_reg_le16_ops;
else
ace->reg_ops = &ace_reg_be16_ops;
} else {
ace_out_8(ace, ACE_BUSMODE, 0x00);
ace->reg_ops = &ace_reg_8_ops;
}
version = ace_in(ace, ACE_VERSION);
if ((version == 0) || (version == 0xFFFF))
goto err_read;
ace_out(ace, ACE_CTRL, ACE_CTRL_FORCECFGMODE |
ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ);
if (ace->irq != NO_IRQ) {
rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
if (rc) {
dev_err(ace->dev, "request_irq failed\n");
ace->irq = NO_IRQ;
}
}
val = ace_in(ace, ACE_CTRL);
val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ;
ace_out(ace, ACE_CTRL, val);
dev_info(ace->dev, "Xilinx SystemACE revision %i.%i.%i\n",
(version >> 12) & 0xf, (version >> 8) & 0x0f, version & 0xff);
dev_dbg(ace->dev, "physaddr 0x%llx, mapped to 0x%p, irq=%i\n",
(unsigned long long) ace->physaddr, ace->baseaddr, ace->irq);
ace->media_change = 1;
ace_revalidate_disk(ace->gd);
add_disk(ace->gd);
return 0;
err_read:
put_disk(ace->gd);
err_alloc_disk:
blk_cleanup_queue(ace->queue);
err_blk_initq:
iounmap(ace->baseaddr);
err_ioremap:
dev_info(ace->dev, "xsysace: error initializing device at 0x%llx\n",
(unsigned long long) ace->physaddr);
return -ENOMEM;
}
/* Create disk on demand. So we won't create lots of disk for un-used devices. */
static struct kobject *tzmem_blk_probe(dev_t dev, int *part, void *data)
{
uint32_t len;
struct gendisk *disk;
struct kobject *kobj;
struct request_queue *queue;
struct tzmem_diskinfo_s *diskInfo;
int ret;
KREE_SESSION_HANDLE session;
#ifdef MTEE_TZMEM_DBG
pr_warn("====> tzmem_blk_probe\n");
#endif
mutex_lock(&tzmem_probe_mutex);
diskInfo = (struct tzmem_diskinfo_s *) &_tzmem_diskInfo[tzmem_poolIndex];
if (diskInfo->disk == NULL) {
disk = alloc_disk(1);
if (!disk)
goto out_info;
queue = blk_init_queue(do_tzmem_blk_request, &tzmem_blk_lock);
if (!queue)
goto out_queue;
blk_queue_max_hw_sectors(queue, 1024);
blk_queue_bounce_limit(queue, BLK_BOUNCE_ANY);
if (_tzmem_get_poolsize(&len))
goto out_init;
disk->major = IO_NODE_MAJOR_TZMEM;
disk->first_minor = MINOR(dev);
disk->fops = &tzmem_blk_fops;
disk->private_data = &_tzmem_diskInfo;
snprintf(disk->disk_name, sizeof(disk->disk_name), "tzmem%d", MINOR(dev));
disk->queue = queue;
set_capacity(disk, len / 512);
add_disk(disk);
ret = KREE_CreateSession(TZ_TA_MEM_UUID, &session);
if (ret != TZ_RESULT_SUCCESS) {
pr_debug(MTEE_TZMEM_TAG
"[%s] _tzmem_get_poolsize: KREE_CreateSession Error = 0x%x\n",
MODULE_NAME, ret);
goto out_init;
}
diskInfo->session = session;
diskInfo->pool_size = len;
diskInfo->disk = disk;
diskInfo->size = len;
}
*part = 0;
kobj = diskInfo ? get_disk(diskInfo->disk) : ERR_PTR(-ENOMEM);
mutex_unlock(&tzmem_probe_mutex);
return kobj;
out_init:
blk_cleanup_queue(queue);
out_queue:
put_disk(disk);
out_info:
mutex_unlock(&tzmem_probe_mutex);
return ERR_PTR(-ENOMEM);
}
/* alloc_disk and add_disk can sleep */
void
aoeblk_gdalloc(void *vp)
{
struct aoedev *d = vp;
struct gendisk *gd;
ulong flags;
gd = alloc_disk(AOE_PARTITIONS);
if (gd == NULL) {
printk(KERN_ERR
"aoe: cannot allocate disk structure for %ld.%d\n",
d->aoemajor, d->aoeminor);
goto err;
}
d->bufpool = mempool_create_slab_pool(MIN_BUFS, buf_pool_cache);
if (d->bufpool == NULL) {
printk(KERN_ERR "aoe: cannot allocate bufpool for %ld.%d\n",
d->aoemajor, d->aoeminor);
goto err_disk;
}
d->blkq = blk_alloc_queue(GFP_KERNEL);
if (!d->blkq)
goto err_mempool;
blk_queue_make_request(d->blkq, aoeblk_make_request);
d->blkq->backing_dev_info.name = "aoe";
if (bdi_init(&d->blkq->backing_dev_info))
goto err_blkq;
spin_lock_irqsave(&d->lock, flags);
gd->major = AOE_MAJOR;
gd->first_minor = d->sysminor * AOE_PARTITIONS;
gd->fops = &aoe_bdops;
gd->private_data = d;
set_capacity(gd, d->ssize);
snprintf(gd->disk_name, sizeof gd->disk_name, "etherd/e%ld.%d",
d->aoemajor, d->aoeminor);
gd->queue = d->blkq;
d->gd = gd;
d->flags &= ~DEVFL_GDALLOC;
d->flags |= DEVFL_UP;
spin_unlock_irqrestore(&d->lock, flags);
add_disk(gd);
aoedisk_add_sysfs(d);
return;
err_blkq:
blk_cleanup_queue(d->blkq);
d->blkq = NULL;
err_mempool:
mempool_destroy(d->bufpool);
err_disk:
put_disk(gd);
err:
spin_lock_irqsave(&d->lock, flags);
d->flags &= ~DEVFL_GDALLOC;
spin_unlock_irqrestore(&d->lock, flags);
}
static int ide_gd_probe(ide_drive_t *drive)
{
const struct ide_disk_ops *disk_ops = NULL;
struct ide_disk_obj *idkp;
struct gendisk *g;
/* strstr("foo", "") is non-NULL */
if (!strstr("ide-gd", drive->driver_req))
goto failed;
#ifdef CONFIG_IDE_GD_ATA
if (drive->media == ide_disk)
disk_ops = &ide_ata_disk_ops;
#endif
#ifdef CONFIG_IDE_GD_ATAPI
if (drive->media == ide_floppy)
disk_ops = &ide_atapi_disk_ops;
#endif
if (disk_ops == NULL)
goto failed;
if (disk_ops->check(drive, DRV_NAME) == 0) {
printk(KERN_ERR PFX "%s: not supported by this driver\n",
drive->name);
goto failed;
}
idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
if (!idkp) {
printk(KERN_ERR PFX "%s: can't allocate a disk structure\n",
drive->name);
goto failed;
}
g = alloc_disk_node(IDE_DISK_MINORS, hwif_to_node(drive->hwif));
if (!g)
goto out_free_idkp;
ide_init_disk(g, drive);
idkp->dev.parent = &drive->gendev;
idkp->dev.release = ide_disk_release;
dev_set_name(&idkp->dev, dev_name(&drive->gendev));
if (device_register(&idkp->dev))
goto out_free_disk;
idkp->drive = drive;
idkp->driver = &ide_gd_driver;
idkp->disk = g;
g->private_data = &idkp->driver;
drive->driver_data = idkp;
drive->debug_mask = debug_mask;
drive->disk_ops = disk_ops;
disk_ops->setup(drive);
set_capacity(g, ide_gd_capacity(drive));
g->minors = IDE_DISK_MINORS;
g->driverfs_dev = &drive->gendev;
g->flags |= GENHD_FL_EXT_DEVT;
if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
g->flags = GENHD_FL_REMOVABLE;
g->fops = &ide_gd_ops;
add_disk(g);
return 0;
out_free_disk:
put_disk(g);
out_free_idkp:
kfree(idkp);
failed:
return -ENODEV;
}
static int ide_scsi_probe(ide_drive_t *drive)
{
idescsi_scsi_t *idescsi;
struct Scsi_Host *host;
struct gendisk *g;
static int warned;
int err = -ENOMEM;
if (!warned && drive->media == ide_cdrom) {
printk(KERN_WARNING "ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device\n");
warned = 1;
}
if (idescsi_nocd && drive->media == ide_cdrom)
return -ENODEV;
if (!strstr("ide-scsi", drive->driver_req) ||
!drive->present ||
drive->media == ide_disk ||
!(host = scsi_host_alloc(&idescsi_template,sizeof(idescsi_scsi_t))))
return -ENODEV;
drive->scsi = 1;
g = alloc_disk(1 << PARTN_BITS);
if (!g)
goto out_host_put;
ide_init_disk(g, drive);
host->max_id = 1;
if (drive->id->last_lun)
debug_log("%s: id->last_lun=%u\n", drive->name,
drive->id->last_lun);
if ((drive->id->last_lun & 0x7) != 7)
host->max_lun = (drive->id->last_lun & 0x7) + 1;
else
host->max_lun = 1;
drive->driver_data = host;
idescsi = scsihost_to_idescsi(host);
idescsi->drive = drive;
idescsi->driver = &idescsi_driver;
idescsi->host = host;
idescsi->disk = g;
g->private_data = &idescsi->driver;
ide_proc_register_driver(drive, &idescsi_driver);
err = 0;
idescsi_setup(drive, idescsi);
g->fops = &idescsi_ops;
ide_register_region(g);
err = scsi_add_host(host, &drive->gendev);
if (!err) {
scsi_scan_host(host);
return 0;
}
/* fall through on error */
ide_unregister_region(g);
ide_proc_unregister_driver(drive, &idescsi_driver);
put_disk(g);
out_host_put:
drive->scsi = 0;
scsi_host_put(host);
return err;
}
/*
* Exits the block layer interfaces.
*/
static void sd_exit_blk_dev(struct sd_host *host)
{
blk_cleanup_queue(host->queue);
put_disk(host->disk);
}
static void cyasblkdev_blk_put(
struct cyasblkdev_blk_data *bd
)
{
DBGPRN_FUNC_NAME;
down(&open_lock);
if (bd) {
bd->usage--;
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
" cyasblkdev_blk_put , bd->usage= %d\n", bd->usage);
#endif
} else {
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
"cyasblkdev: blk_put(bd) on bd = NULL!: usage = %d\n",
bd->usage);
#endif
up(&open_lock);
return;
}
if (bd->usage == 0) {
put_disk(bd->user_disk_0);
put_disk(bd->user_disk_1);
put_disk(bd->system_disk);
cyasblkdev_cleanup_queue(&bd->queue);
if (CY_AS_ERROR_SUCCESS !=
cy_as_storage_release(bd->dev_handle, 0, 0, 0, 0)) {
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
"cyasblkdev: cannot release bus 0\n");
#endif
}
if (CY_AS_ERROR_SUCCESS !=
cy_as_storage_release(bd->dev_handle, 1, 0, 0, 0)) {
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
"cyasblkdev: cannot release bus 1\n");
#endif
}
if (CY_AS_ERROR_SUCCESS !=
cy_as_storage_stop(bd->dev_handle, 0, 0)) {
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
"cyasblkdev: cannot stop storage stack\n");
#endif
}
#ifdef __CY_ASTORIA_SCM_KERNEL_HAL__
/* If the SCM Kernel HAL is being used, disable the use
* of scatter/gather lists at the end of block driver usage.
*/
cy_as_hal_disable_scatter_list(cyasdevice_gethaltag());
#endif
/*ptr to global struct cyasblkdev_blk_data */
gl_bd = NULL;
kfree(bd);
}
#ifndef WESTBRIDGE_NDEBUG
cy_as_hal_print_message(
"cyasblkdev (blk_put): usage = %d\n",
bd->usage);
#endif
up(&open_lock);
}
static void __exit simp_blkdev_exit(void) {
put_disk(simp_blkdev_disk);
del_gendisk(simp_blkdev_disk);
blk_cleanup_queue(simp_blkdev_queue);
vfree(simp_blkdev_data);
}
int __init mcd_init(void)
{
struct gendisk *disk = alloc_disk(1);
int count;
unsigned char result[3];
char msg[80];
if (!disk) {
printk(KERN_INFO "mcd: can't allocated disk.\n");
return -ENOMEM;
}
if (mcd_port <= 0 || mcd_irq <= 0) {
printk(KERN_INFO "mcd: not probing.\n");
put_disk(disk);
return -EIO;
}
if (register_blkdev(MAJOR_NR, "mcd")) {
put_disk(disk);
return -EIO;
}
if (!request_region(mcd_port, 4, "mcd")) {
printk(KERN_ERR "mcd: Initialization failed, I/O port (%X) already in use\n", mcd_port);
goto out_region;
}
mcd_queue = blk_init_queue(do_mcd_request, &mcd_spinlock);
if (!mcd_queue)
goto out_queue;
/* check for card */
outb(0, MCDPORT(1)); /* send reset */
for (count = 0; count < 2000000; count++)
(void) inb(MCDPORT(1)); /* delay a bit */
outb(0x40, MCDPORT(0)); /* send get-stat cmd */
for (count = 0; count < 2000000; count++)
if (!(inb(MCDPORT(1)) & MFL_STATUS))
break;
if (count >= 2000000) {
printk(KERN_INFO "mcd: initialisation failed - No mcd device at 0x%x irq %d\n",
mcd_port, mcd_irq);
goto out_probe;
}
count = inb(MCDPORT(0)); /* pick up the status */
outb(MCMD_GET_VERSION, MCDPORT(0));
for (count = 0; count < 3; count++)
if (getValue(result + count)) {
printk(KERN_ERR "mcd: mitsumi get version failed at 0x%x\n",
mcd_port);
goto out_probe;
}
if (result[0] == result[1] && result[1] == result[2])
goto out_probe;
mcdVersion = result[2];
if (mcdVersion >= 4)
outb(4, MCDPORT(2)); /* magic happens */
/* don't get the IRQ until we know for sure the drive is there */
if (request_irq(mcd_irq, mcd_interrupt, SA_INTERRUPT, "Mitsumi CD", NULL)) {
printk(KERN_ERR "mcd: Unable to get IRQ%d for Mitsumi CD-ROM\n", mcd_irq);
goto out_probe;
}
if (result[1] == 'D') {
MCMD_DATA_READ = MCMD_2X_READ;
/* Added flag to drop to 1x speed if too many errors */
mcdDouble = 1;
} else
mcd_info.speed = 1;
sprintf(msg, " mcd: Mitsumi %s Speed CD-ROM at port=0x%x,"
" irq=%d\n", mcd_info.speed == 1 ? "Single" : "Double",
mcd_port, mcd_irq);
outb(MCMD_CONFIG_DRIVE, MCDPORT(0));
outb(0x02, MCDPORT(0));
outb(0x00, MCDPORT(0));
getValue(result);
outb(MCMD_CONFIG_DRIVE, MCDPORT(0));
outb(0x10, MCDPORT(0));
outb(0x04, MCDPORT(0));
getValue(result);
mcd_invalidate_buffers();
mcdPresent = 1;
disk->major = MAJOR_NR;
disk->first_minor = 0;
sprintf(disk->disk_name, "mcd");
disk->fops = &mcd_bdops;
disk->flags = GENHD_FL_CD;
mcd_gendisk = disk;
if (register_cdrom(&mcd_info) != 0) {
printk(KERN_ERR "mcd: Unable to register Mitsumi CD-ROM.\n");
goto out_cdrom;
}
disk->queue = mcd_queue;
add_disk(disk);
printk(msg);
return 0;
out_cdrom:
free_irq(mcd_irq, NULL);
out_queue:
release_region(mcd_port, 4);
out_probe:
blk_cleanup_queue(mcd_queue);
out_region:
unregister_blkdev(MAJOR_NR, "mcd");
put_disk(disk);
return -EIO;
}
int td_linux_block_register(struct td_osdev *dev, int major)
{
int rc;
int first_minor;
struct gendisk *disk;
td_os_info(dev, "LINUX_BLOCK_REGISTER\n");
/* WARN_TD_DEVICE_UNLOCKED(dev); */
WARN_ON(!dev->queue);
if (!dev->block_params.capacity) {
td_os_err(dev, "Cannot create a block device until "
"capacity is known\n");
rc = -EINVAL;
goto error_capacity;
}
/* generate a disk */
disk = dev->disk = alloc_disk(TD_DEVICE_PARTITIONS_MAX);
if (!disk) {
td_os_err(dev, "Error allocating disk structure\n");
rc = -ENOMEM;
goto error_alloc_disk;
}
/* figure out where the first minor number will be */
first_minor = dev->unique_id * TD_DEVICE_PARTITIONS_MAX;
disk->major = major;
disk->first_minor = first_minor;
disk->minors = TD_DEVICE_PARTITIONS_MAX;
disk->fops = &td_device_block_fops;
disk->private_data = dev;
disk->queue = dev->queue;
strncpy(disk->disk_name, dev->name, sizeof(disk->disk_name)-1);
/* set the disk capacity */
td_os_info(dev, "Setting disk capacity to %llu bytes (%llu sectors)\n",
dev->block_params.capacity, dev->block_params.capacity>>SECTOR_SHIFT);
set_capacity(disk, dev->block_params.capacity >> SECTOR_SHIFT);
add_disk(disk);
#ifdef CONFIG_PM
rc = td_osdev_os_register_platform_device(dev);
if (rc) {
pr_err("Failed to platform device err=%d.\n", rc);
goto error_plat_dev;
}
#endif
return 0;
#ifdef CONFIG_PM
error_plat_dev:
#endif
dev->disk = NULL;
del_gendisk(disk);
put_disk(disk);
error_alloc_disk:
error_capacity:
return rc;
}
static int __init hd_init(void)
{
int drive;
if (register_blkdev(MAJOR_NR, "hd"))
return -1;
hd_queue = blk_init_queue(do_hd_request, &hd_lock);
if (!hd_queue) {
unregister_blkdev(MAJOR_NR, "hd");
return -ENOMEM;
}
blk_queue_max_sectors(hd_queue, 255);
init_timer(&device_timer);
device_timer.function = hd_times_out;
blk_queue_hardsect_size(hd_queue, 512);
if (!NR_HD) {
/*
* We don't know anything about the drive. This means
* that you *MUST* specify the drive parameters to the
* kernel yourself.
*
* If we were on an i386, we used to read this info from
* the BIOS or CMOS. This doesn't work all that well,
* since this assumes that this is a primary or secondary
* drive, and if we're using this legacy driver, it's
* probably an auxilliary controller added to recover
* legacy data off an ST-506 drive. Either way, it's
* definitely safest to have the user explicitly specify
* the information.
*/
printk("hd: no drives specified - use hd=cyl,head,sectors"
" on kernel command line\n");
goto out;
}
for (drive = 0 ; drive < NR_HD ; drive++) {
struct gendisk *disk = alloc_disk(64);
struct hd_i_struct *p = &hd_info[drive];
if (!disk)
goto Enomem;
disk->major = MAJOR_NR;
disk->first_minor = drive << 6;
disk->fops = &hd_fops;
sprintf(disk->disk_name, "hd%c", 'a'+drive);
disk->private_data = p;
set_capacity(disk, p->head * p->sect * p->cyl);
disk->queue = hd_queue;
p->unit = drive;
hd_gendisk[drive] = disk;
printk("%s: %luMB, CHS=%d/%d/%d\n",
disk->disk_name, (unsigned long)get_capacity(disk)/2048,
p->cyl, p->head, p->sect);
}
if (request_irq(HD_IRQ, hd_interrupt, IRQF_DISABLED, "hd", NULL)) {
printk("hd: unable to get IRQ%d for the hard disk driver\n",
HD_IRQ);
goto out1;
}
if (!request_region(HD_DATA, 8, "hd")) {
printk(KERN_WARNING "hd: port 0x%x busy\n", HD_DATA);
goto out2;
}
if (!request_region(HD_CMD, 1, "hd(cmd)")) {
printk(KERN_WARNING "hd: port 0x%x busy\n", HD_CMD);
goto out3;
}
/* Let them fly */
for (drive = 0; drive < NR_HD; drive++)
add_disk(hd_gendisk[drive]);
return 0;
out3:
release_region(HD_DATA, 8);
out2:
free_irq(HD_IRQ, NULL);
out1:
for (drive = 0; drive < NR_HD; drive++)
put_disk(hd_gendisk[drive]);
NR_HD = 0;
out:
del_timer(&device_timer);
unregister_blkdev(MAJOR_NR, "hd");
blk_cleanup_queue(hd_queue);
return -1;
Enomem:
while (drive--)
put_disk(hd_gendisk[drive]);
goto out;
}