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path: root/drivers/block/swim3.c
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Diffstat (limited to 'drivers/block/swim3.c')
-rw-r--r--drivers/block/swim3.c107
1 files changed, 54 insertions, 53 deletions
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 612965307ba..80df93e3cdd 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -251,6 +251,20 @@ static int floppy_release(struct gendisk *disk, fmode_t mode);
static int floppy_check_change(struct gendisk *disk);
static int floppy_revalidate(struct gendisk *disk);
+static bool swim3_end_request(int err, unsigned int nr_bytes)
+{
+ if (__blk_end_request(fd_req, err, nr_bytes))
+ return true;
+
+ fd_req = NULL;
+ return false;
+}
+
+static bool swim3_end_request_cur(int err)
+{
+ return swim3_end_request(err, blk_rq_cur_bytes(fd_req));
+}
+
static void swim3_select(struct floppy_state *fs, int sel)
{
struct swim3 __iomem *sw = fs->swim3;
@@ -310,25 +324,27 @@ static void start_request(struct floppy_state *fs)
wake_up(&fs->wait);
return;
}
- while (fs->state == idle && (req = elv_next_request(swim3_queue))) {
+ while (fs->state == idle) {
+ if (!fd_req) {
+ fd_req = blk_fetch_request(swim3_queue);
+ if (!fd_req)
+ break;
+ }
+ req = fd_req;
#if 0
- printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n",
+ printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%u buf=%p\n",
req->rq_disk->disk_name, req->cmd,
- (long)req->sector, req->nr_sectors, req->buffer);
- printk(" errors=%d current_nr_sectors=%ld\n",
- req->errors, req->current_nr_sectors);
+ (long)blk_rq_pos(req), blk_rq_sectors(req), req->buffer);
+ printk(" errors=%d current_nr_sectors=%u\n",
+ req->errors, blk_rq_cur_sectors(req));
#endif
- if (req->sector < 0 || req->sector >= fs->total_secs) {
- end_request(req, 0);
- continue;
- }
- if (req->current_nr_sectors == 0) {
- end_request(req, 1);
+ if (blk_rq_pos(req) >= fs->total_secs) {
+ swim3_end_request_cur(-EIO);
continue;
}
if (fs->ejected) {
- end_request(req, 0);
+ swim3_end_request_cur(-EIO);
continue;
}
@@ -336,18 +352,19 @@ static void start_request(struct floppy_state *fs)
if (fs->write_prot < 0)
fs->write_prot = swim3_readbit(fs, WRITE_PROT);
if (fs->write_prot) {
- end_request(req, 0);
+ swim3_end_request_cur(-EIO);
continue;
}
}
- /* Do not remove the cast. req->sector 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
+ /* 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)req->sector) / fs->secpercyl;
- x = ((long)req->sector) % fs->secpercyl;
+ 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;
fd_req = req;
@@ -424,7 +441,7 @@ static inline void setup_transfer(struct floppy_state *fs)
struct dbdma_cmd *cp = fs->dma_cmd;
struct dbdma_regs __iomem *dr = fs->dma;
- if (fd_req->current_nr_sectors <= 0) {
+ if (blk_rq_cur_sectors(fd_req) <= 0) {
printk(KERN_ERR "swim3: transfer 0 sectors?\n");
return;
}
@@ -432,8 +449,8 @@ static inline void setup_transfer(struct floppy_state *fs)
n = 1;
else {
n = fs->secpertrack - fs->req_sector + 1;
- if (n > fd_req->current_nr_sectors)
- n = fd_req->current_nr_sectors;
+ if (n > blk_rq_cur_sectors(fd_req))
+ n = blk_rq_cur_sectors(fd_req);
}
fs->scount = n;
swim3_select(fs, fs->head? READ_DATA_1: READ_DATA_0);
@@ -508,7 +525,7 @@ static void act(struct floppy_state *fs)
case do_transfer:
if (fs->cur_cyl != fs->req_cyl) {
if (fs->retries > 5) {
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
return;
}
@@ -540,7 +557,7 @@ static void scan_timeout(unsigned long data)
out_8(&sw->intr_enable, 0);
fs->cur_cyl = -1;
if (fs->retries > 5) {
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
} else {
@@ -559,7 +576,7 @@ static void seek_timeout(unsigned long data)
out_8(&sw->select, RELAX);
out_8(&sw->intr_enable, 0);
printk(KERN_ERR "swim3: seek timeout\n");
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
}
@@ -583,7 +600,7 @@ static void settle_timeout(unsigned long data)
return;
}
printk(KERN_ERR "swim3: seek settle timeout\n");
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
}
@@ -593,8 +610,6 @@ static void xfer_timeout(unsigned long data)
struct floppy_state *fs = (struct floppy_state *) data;
struct swim3 __iomem *sw = fs->swim3;
struct dbdma_regs __iomem *dr = fs->dma;
- struct dbdma_cmd *cp = fs->dma_cmd;
- unsigned long s;
int n;
fs->timeout_pending = 0;
@@ -605,17 +620,10 @@ static void xfer_timeout(unsigned long data)
out_8(&sw->intr_enable, 0);
out_8(&sw->control_bic, WRITE_SECTORS | DO_ACTION);
out_8(&sw->select, RELAX);
- if (rq_data_dir(fd_req) == WRITE)
- ++cp;
- if (ld_le16(&cp->xfer_status) != 0)
- s = fs->scount - ((ld_le16(&cp->res_count) + 511) >> 9);
- else
- s = 0;
- fd_req->sector += s;
- fd_req->current_nr_sectors -= s;
printk(KERN_ERR "swim3: timeout %sing sector %ld\n",
- (rq_data_dir(fd_req)==WRITE? "writ": "read"), (long)fd_req->sector);
- end_request(fd_req, 0);
+ (rq_data_dir(fd_req)==WRITE? "writ": "read"),
+ (long)blk_rq_pos(fd_req));
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
}
@@ -646,7 +654,7 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
printk(KERN_ERR "swim3: seen sector but cyl=ff?\n");
fs->cur_cyl = -1;
if (fs->retries > 5) {
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
} else {
@@ -719,9 +727,7 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
if (intr & ERROR_INTR) {
n = fs->scount - 1 - resid / 512;
if (n > 0) {
- fd_req->sector += n;
- fd_req->current_nr_sectors -= n;
- fd_req->buffer += n * 512;
+ blk_update_request(fd_req, 0, n << 9);
fs->req_sector += n;
}
if (fs->retries < 5) {
@@ -730,8 +736,8 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
} else {
printk("swim3: error %sing block %ld (err=%x)\n",
rq_data_dir(fd_req) == WRITE? "writ": "read",
- (long)fd_req->sector, err);
- end_request(fd_req, 0);
+ (long)blk_rq_pos(fd_req), err);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
}
} else {
@@ -740,18 +746,12 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
printk(KERN_ERR "swim3: fd dma: stat=%x resid=%d\n", stat, resid);
printk(KERN_ERR " state=%d, dir=%x, intr=%x, err=%x\n",
fs->state, rq_data_dir(fd_req), intr, err);
- end_request(fd_req, 0);
+ swim3_end_request_cur(-EIO);
fs->state = idle;
start_request(fs);
break;
}
- fd_req->sector += fs->scount;
- fd_req->current_nr_sectors -= fs->scount;
- fd_req->buffer += fs->scount * 512;
- if (fd_req->current_nr_sectors <= 0) {
- end_request(fd_req, 1);
- fs->state = idle;
- } else {
+ if (swim3_end_request(0, fs->scount << 9)) {
fs->req_sector += fs->scount;
if (fs->req_sector > fs->secpertrack) {
fs->req_sector -= fs->secpertrack;
@@ -761,7 +761,8 @@ static irqreturn_t swim3_interrupt(int irq, void *dev_id)
}
}
act(fs);
- }
+ } else
+ fs->state = idle;
}
if (fs->state == idle)
start_request(fs);
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 19:42:33 +0000