static int floppy_locked_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long param)
{
struct floppy_state *fs = bdev->bd_disk->private_data;
int err;
if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN))
return -EPERM;
if (fs->mdev->media_bay &&
check_media_bay(fs->mdev->media_bay) != MB_FD)
return -ENXIO;
switch (cmd) {
case FDEJECT:
if (fs->ref_count != 1)
return -EBUSY;
err = fd_eject(fs);
return err;
case FDGETPRM:
if (copy_to_user((void __user *) param, &floppy_type,
sizeof(struct floppy_struct)))
return -EFAULT;
return 0;
}
return -ENOTTY;
}
static void do_fd_request(struct request_queue * q)
{
int i;
for(i=0; i<floppy_count; i++) {
struct floppy_state *fs = &floppy_states[i];
if (fs->mdev->media_bay &&
check_media_bay(fs->mdev->media_bay) != MB_FD)
continue;
start_request(fs);
}
}
static void do_fd_request(request_queue_t * q)
{
int i;
for(i=0;i<floppy_count;i++)
{
if (floppy_states[i].media_bay &&
check_media_bay(floppy_states[i].media_bay, MB_FD))
continue;
start_request(&floppy_states[i]);
}
sti();
}
static void do_fd_request(request_queue_t * q)
{
int i;
for(i=0;i<floppy_count;i++)
{
#ifdef CONFIG_PMAC_MEDIABAY
if (floppy_states[i].media_bay &&
check_media_bay(floppy_states[i].media_bay, MB_FD))
continue;
#endif /* CONFIG_PMAC_MEDIABAY */
start_request(&floppy_states[i]);
}
}
static void pmac_ide_init_dev(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
pmac_ide_hwif_t *pmif = dev_get_drvdata(hwif->gendev.parent);
if (on_media_bay(pmif)) {
if (check_media_bay(pmif->mdev->media_bay) == MB_CD) {
drive->dev_flags &= ~IDE_DFLAG_NOPROBE;
return;
}
drive->dev_flags |= IDE_DFLAG_NOPROBE;
}
}
static int floppy_revalidate(struct gendisk *disk)
{
struct floppy_state *fs = disk->private_data;
struct swim3 __iomem *sw;
int ret, n;
if (fs->mdev->media_bay &&
check_media_bay(fs->mdev->media_bay) != MB_FD)
return -ENXIO;
sw = fs->swim3;
grab_drive(fs, revalidating, 0);
out_8(&sw->intr_enable, 0);
out_8(&sw->control_bis, DRIVE_ENABLE);
swim3_action(fs, MOTOR_ON); /* necessary? */
fs->write_prot = -1;
fs->cur_cyl = -1;
mdelay(1);
for (n = HZ; n > 0; --n) {
if (swim3_readbit(fs, SEEK_COMPLETE))
break;
if (signal_pending(current))
break;
swim3_select(fs, RELAX);
schedule_timeout_interruptible(1);
}
ret = swim3_readbit(fs, SEEK_COMPLETE) == 0
|| swim3_readbit(fs, DISK_IN) == 0;
if (ret)
swim3_action(fs, MOTOR_OFF);
else {
fs->ejected = 0;
swim3_action(fs, SETMFM);
}
swim3_select(fs, RELAX);
release_drive(fs);
return ret;
}
static int floppy_open(struct block_device *bdev, fmode_t mode)
{
struct floppy_state *fs = bdev->bd_disk->private_data;
struct swim3 __iomem *sw = fs->swim3;
int n, err = 0;
if (fs->ref_count == 0) {
if (fs->mdev->media_bay &&
check_media_bay(fs->mdev->media_bay) != MB_FD)
return -ENXIO;
out_8(&sw->setup, S_IBM_DRIVE | S_FCLK_DIV2);
out_8(&sw->control_bic, 0xff);
out_8(&sw->mode, 0x95);
udelay(10);
out_8(&sw->intr_enable, 0);
out_8(&sw->control_bis, DRIVE_ENABLE | INTR_ENABLE);
swim3_action(fs, MOTOR_ON);
fs->write_prot = -1;
fs->cur_cyl = -1;
for (n = 0; n < 2 * HZ; ++n) {
if (n >= HZ/30 && swim3_readbit(fs, SEEK_COMPLETE))
break;
if (signal_pending(current)) {
err = -EINTR;
break;
}
swim3_select(fs, RELAX);
schedule_timeout_interruptible(1);
}
if (err == 0 && (swim3_readbit(fs, SEEK_COMPLETE) == 0
|| swim3_readbit(fs, DISK_IN) == 0))
err = -ENXIO;
swim3_action(fs, SETMFM);
swim3_select(fs, RELAX);
} else if (fs->ref_count == -1 || mode & FMODE_EXCL)
return -EBUSY;
if (err == 0 && (mode & FMODE_NDELAY) == 0
&& (mode & (FMODE_READ|FMODE_WRITE))) {
check_disk_change(bdev);
if (fs->ejected)
err = -ENXIO;
}
if (err == 0 && (mode & FMODE_WRITE)) {
if (fs->write_prot < 0)
fs->write_prot = swim3_readbit(fs, WRITE_PROT);
if (fs->write_prot)
err = -EROFS;
}
if (err) {
if (fs->ref_count == 0) {
swim3_action(fs, MOTOR_OFF);
out_8(&sw->control_bic, DRIVE_ENABLE | INTR_ENABLE);
swim3_select(fs, RELAX);
}
return err;
}
if (mode & FMODE_EXCL)
fs->ref_count = -1;
else
++fs->ref_count;
return 0;
}
static void start_request(struct floppy_state *fs)
{
struct request *req;
unsigned long x;
swim3_dbg("start request, initial state=%d\n", fs->state);
if (fs->state == idle && fs->wanted) {
fs->state = available;
wake_up(&fs->wait);
return;
}
while (fs->state == idle) {
swim3_dbg("start request, idle loop, cur_req=%p\n", fs->cur_req);
if (!fs->cur_req) {
fs->cur_req = blk_fetch_request(disks[fs->index]->queue);
swim3_dbg(" fetched request %p\n", fs->cur_req);
if (!fs->cur_req)
break;
}
req = fs->cur_req;
if (fs->mdev->media_bay &&
check_media_bay(fs->mdev->media_bay) != MB_FD) {
swim3_dbg("%s", " media bay absent, dropping req\n");
swim3_end_request(fs, BLK_STS_IOERR, 0);
continue;
}
#if 0 /* This is really too verbose */
swim3_dbg("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%u buf=%p\n",
req->rq_disk->disk_name, req->cmd,
(long)blk_rq_pos(req), blk_rq_sectors(req),
bio_data(req->bio));
swim3_dbg(" current_nr_sectors=%u\n",
blk_rq_cur_sectors(req));
#endif
if (blk_rq_pos(req) >= fs->total_secs) {
swim3_dbg(" pos out of bounds (%ld, max is %ld)\n",
(long)blk_rq_pos(req), (long)fs->total_secs);
swim3_end_request(fs, BLK_STS_IOERR, 0);
continue;
}
if (fs->ejected) {
swim3_dbg("%s", " disk ejected\n");
swim3_end_request(fs, BLK_STS_IOERR, 0);
continue;
}
if (rq_data_dir(req) == WRITE) {
if (fs->write_prot < 0)
fs->write_prot = swim3_readbit(fs, WRITE_PROT);
if (fs->write_prot) {
swim3_dbg("%s", " try to write, disk write protected\n");
swim3_end_request(fs, BLK_STS_IOERR, 0);
continue;
}
}
/* Do not remove the cast. blk_rq_pos(req) is now a
* sector_t and can be 64 bits, but it will never go
* past 32 bits for this driver anyway, so we can
* safely cast it down and not have to do a 64/32
* division
*/
fs->req_cyl = ((long)blk_rq_pos(req)) / fs->secpercyl;
x = ((long)blk_rq_pos(req)) % fs->secpercyl;
fs->head = x / fs->secpertrack;
fs->req_sector = x % fs->secpertrack + 1;
fs->state = do_transfer;
fs->retries = 0;
act(fs);
}
}
static int swim3_add_device(struct macio_dev *mdev, int index)
{
struct device_node *swim = mdev->ofdev.dev.of_node;
struct floppy_state *fs = &floppy_states[index];
int rc = -EBUSY;
/* Do this first for message macros */
memset(fs, 0, sizeof(*fs));
fs->mdev = mdev;
fs->index = index;
/* Check & Request resources */
if (macio_resource_count(mdev) < 2) {
swim3_err("%s", "No address in device-tree\n");
return -ENXIO;
}
if (macio_irq_count(mdev) < 1) {
swim3_err("%s", "No interrupt in device-tree\n");
return -ENXIO;
}
if (macio_request_resource(mdev, 0, "swim3 (mmio)")) {
swim3_err("%s", "Can't request mmio resource\n");
return -EBUSY;
}
if (macio_request_resource(mdev, 1, "swim3 (dma)")) {
swim3_err("%s", "Can't request dma resource\n");
macio_release_resource(mdev, 0);
return -EBUSY;
}
dev_set_drvdata(&mdev->ofdev.dev, fs);
if (mdev->media_bay == NULL)
pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 1);
fs->state = idle;
fs->swim3 = (struct swim3 __iomem *)
ioremap(macio_resource_start(mdev, 0), 0x200);
if (fs->swim3 == NULL) {
swim3_err("%s", "Couldn't map mmio registers\n");
rc = -ENOMEM;
goto out_release;
}
fs->dma = (struct dbdma_regs __iomem *)
ioremap(macio_resource_start(mdev, 1), 0x200);
if (fs->dma == NULL) {
swim3_err("%s", "Couldn't map dma registers\n");
iounmap(fs->swim3);
rc = -ENOMEM;
goto out_release;
}
fs->swim3_intr = macio_irq(mdev, 0);
fs->dma_intr = macio_irq(mdev, 1);
fs->cur_cyl = -1;
fs->cur_sector = -1;
fs->secpercyl = 36;
fs->secpertrack = 18;
fs->total_secs = 2880;
init_waitqueue_head(&fs->wait);
fs->dma_cmd = (struct dbdma_cmd *) DBDMA_ALIGN(fs->dbdma_cmd_space);
memset(fs->dma_cmd, 0, 2 * sizeof(struct dbdma_cmd));
fs->dma_cmd[1].command = cpu_to_le16(DBDMA_STOP);
if (mdev->media_bay == NULL || check_media_bay(mdev->media_bay) == MB_FD)
swim3_mb_event(mdev, MB_FD);
if (request_irq(fs->swim3_intr, swim3_interrupt, 0, "SWIM3", fs)) {
swim3_err("%s", "Couldn't request interrupt\n");
pmac_call_feature(PMAC_FTR_SWIM3_ENABLE, swim, 0, 0);
goto out_unmap;
return -EBUSY;
}
timer_setup(&fs->timeout, NULL, 0);
swim3_info("SWIM3 floppy controller %s\n",
mdev->media_bay ? "in media bay" : "");
return 0;
out_unmap:
iounmap(fs->dma);
iounmap(fs->swim3);
out_release:
macio_release_resource(mdev, 0);
macio_release_resource(mdev, 1);
return rc;
}