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path: root/drivers/s390/block/dasd_diag.c
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Diffstat (limited to 'drivers/s390/block/dasd_diag.c')
-rw-r--r--drivers/s390/block/dasd_diag.c107
1 files changed, 60 insertions, 47 deletions
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 571320ab9e1a..d91df38ee4f7 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -142,7 +142,7 @@ dasd_diag_erp(struct dasd_device *device)
int rc;
mdsk_term_io(device);
- rc = mdsk_init_io(device, device->bp_block, 0, NULL);
+ rc = mdsk_init_io(device, device->block->bp_block, 0, NULL);
if (rc)
DEV_MESSAGE(KERN_WARNING, device, "DIAG ERP unsuccessful, "
"rc=%d", rc);
@@ -158,11 +158,11 @@ dasd_start_diag(struct dasd_ccw_req * cqr)
struct dasd_diag_req *dreq;
int rc;
- device = cqr->device;
+ device = cqr->startdev;
if (cqr->retries < 0) {
DEV_MESSAGE(KERN_WARNING, device, "DIAG start_IO: request %p "
"- no retry left)", cqr);
- cqr->status = DASD_CQR_FAILED;
+ cqr->status = DASD_CQR_ERROR;
return -EIO;
}
private = (struct dasd_diag_private *) device->private;
@@ -184,7 +184,7 @@ dasd_start_diag(struct dasd_ccw_req * cqr)
switch (rc) {
case 0: /* Synchronous I/O finished successfully */
cqr->stopclk = get_clock();
- cqr->status = DASD_CQR_DONE;
+ cqr->status = DASD_CQR_SUCCESS;
/* Indicate to calling function that only a dasd_schedule_bh()
and no timer is needed */
rc = -EACCES;
@@ -209,12 +209,12 @@ dasd_diag_term_IO(struct dasd_ccw_req * cqr)
{
struct dasd_device *device;
- device = cqr->device;
+ device = cqr->startdev;
mdsk_term_io(device);
- mdsk_init_io(device, device->bp_block, 0, NULL);
- cqr->status = DASD_CQR_CLEAR;
+ mdsk_init_io(device, device->block->bp_block, 0, NULL);
+ cqr->status = DASD_CQR_CLEAR_PENDING;
cqr->stopclk = get_clock();
- dasd_schedule_bh(device);
+ dasd_schedule_device_bh(device);
return 0;
}
@@ -247,7 +247,7 @@ dasd_ext_handler(__u16 code)
return;
}
cqr = (struct dasd_ccw_req *) ip;
- device = (struct dasd_device *) cqr->device;
+ device = (struct dasd_device *) cqr->startdev;
if (strncmp(device->discipline->ebcname, (char *) &cqr->magic, 4)) {
DEV_MESSAGE(KERN_WARNING, device,
" magic number of dasd_ccw_req 0x%08X doesn't"
@@ -260,10 +260,10 @@ dasd_ext_handler(__u16 code)
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
/* Check for a pending clear operation */
- if (cqr->status == DASD_CQR_CLEAR) {
- cqr->status = DASD_CQR_QUEUED;
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ if (cqr->status == DASD_CQR_CLEAR_PENDING) {
+ cqr->status = DASD_CQR_CLEARED;
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
return;
}
@@ -272,11 +272,11 @@ dasd_ext_handler(__u16 code)
expires = 0;
if (status == 0) {
- cqr->status = DASD_CQR_DONE;
+ cqr->status = DASD_CQR_SUCCESS;
/* Start first request on queue if possible -> fast_io. */
if (!list_empty(&device->ccw_queue)) {
next = list_entry(device->ccw_queue.next,
- struct dasd_ccw_req, list);
+ struct dasd_ccw_req, devlist);
if (next->status == DASD_CQR_QUEUED) {
rc = dasd_start_diag(next);
if (rc == 0)
@@ -296,10 +296,10 @@ dasd_ext_handler(__u16 code)
}
if (expires != 0)
- dasd_set_timer(device, expires);
+ dasd_device_set_timer(device, expires);
else
- dasd_clear_timer(device);
- dasd_schedule_bh(device);
+ dasd_device_clear_timer(device);
+ dasd_schedule_device_bh(device);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
@@ -309,6 +309,7 @@ dasd_ext_handler(__u16 code)
static int
dasd_diag_check_device(struct dasd_device *device)
{
+ struct dasd_block *block;
struct dasd_diag_private *private;
struct dasd_diag_characteristics *rdc_data;
struct dasd_diag_bio bio;
@@ -328,6 +329,16 @@ dasd_diag_check_device(struct dasd_device *device)
ccw_device_get_id(device->cdev, &private->dev_id);
device->private = (void *) private;
}
+ block = dasd_alloc_block();
+ if (IS_ERR(block)) {
+ DEV_MESSAGE(KERN_WARNING, device, "%s",
+ "could not allocate dasd block structure");
+ kfree(device->private);
+ return PTR_ERR(block);
+ }
+ device->block = block;
+ block->base = device;
+
/* Read Device Characteristics */
rdc_data = (void *) &(private->rdc_data);
rdc_data->dev_nr = private->dev_id.devno;
@@ -409,14 +420,14 @@ dasd_diag_check_device(struct dasd_device *device)
sizeof(DASD_DIAG_CMS1)) == 0) {
/* get formatted blocksize from label block */
bsize = (unsigned int) label->block_size;
- device->blocks = (unsigned long) label->block_count;
+ block->blocks = (unsigned long) label->block_count;
} else
- device->blocks = end_block;
- device->bp_block = bsize;
- device->s2b_shift = 0; /* bits to shift 512 to get a block */
+ block->blocks = end_block;
+ block->bp_block = bsize;
+ block->s2b_shift = 0; /* bits to shift 512 to get a block */
for (sb = 512; sb < bsize; sb = sb << 1)
- device->s2b_shift++;
- rc = mdsk_init_io(device, device->bp_block, 0, NULL);
+ block->s2b_shift++;
+ rc = mdsk_init_io(device, block->bp_block, 0, NULL);
if (rc) {
DEV_MESSAGE(KERN_WARNING, device, "DIAG initialization "
"failed (rc=%d)", rc);
@@ -424,9 +435,9 @@ dasd_diag_check_device(struct dasd_device *device)
} else {
DEV_MESSAGE(KERN_INFO, device,
"(%ld B/blk): %ldkB",
- (unsigned long) device->bp_block,
- (unsigned long) (device->blocks <<
- device->s2b_shift) >> 1);
+ (unsigned long) block->bp_block,
+ (unsigned long) (block->blocks <<
+ block->s2b_shift) >> 1);
}
out:
free_page((long) label);
@@ -436,22 +447,16 @@ out:
/* Fill in virtual disk geometry for device. Return zero on success, non-zero
* otherwise. */
static int
-dasd_diag_fill_geometry(struct dasd_device *device, struct hd_geometry *geo)
+dasd_diag_fill_geometry(struct dasd_block *block, struct hd_geometry *geo)
{
- if (dasd_check_blocksize(device->bp_block) != 0)
+ if (dasd_check_blocksize(block->bp_block) != 0)
return -EINVAL;
- geo->cylinders = (device->blocks << device->s2b_shift) >> 10;
+ geo->cylinders = (block->blocks << block->s2b_shift) >> 10;
geo->heads = 16;
- geo->sectors = 128 >> device->s2b_shift;
+ geo->sectors = 128 >> block->s2b_shift;
return 0;
}
-static dasd_era_t
-dasd_diag_examine_error(struct dasd_ccw_req * cqr, struct irb * stat)
-{
- return dasd_era_fatal;
-}
-
static dasd_erp_fn_t
dasd_diag_erp_action(struct dasd_ccw_req * cqr)
{
@@ -466,8 +471,9 @@ dasd_diag_erp_postaction(struct dasd_ccw_req * cqr)
/* Create DASD request from block device request. Return pointer to new
* request on success, ERR_PTR otherwise. */
-static struct dasd_ccw_req *
-dasd_diag_build_cp(struct dasd_device * device, struct request *req)
+static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
+ struct dasd_block *block,
+ struct request *req)
{
struct dasd_ccw_req *cqr;
struct dasd_diag_req *dreq;
@@ -486,17 +492,17 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
rw_cmd = MDSK_WRITE_REQ;
else
return ERR_PTR(-EINVAL);
- blksize = device->bp_block;
+ blksize = block->bp_block;
/* Calculate record id of first and last block. */
- first_rec = req->sector >> device->s2b_shift;
- last_rec = (req->sector + req->nr_sectors - 1) >> device->s2b_shift;
+ first_rec = req->sector >> block->s2b_shift;
+ last_rec = (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
/* Check struct bio and count the number of blocks for the request. */
count = 0;
rq_for_each_segment(bv, req, iter) {
if (bv->bv_len & (blksize - 1))
/* Fba can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (device->s2b_shift + 9);
+ count += bv->bv_len >> (block->s2b_shift + 9);
}
/* Paranoia. */
if (count != last_rec - first_rec + 1)
@@ -505,7 +511,7 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
datasize = sizeof(struct dasd_diag_req) +
count*sizeof(struct dasd_diag_bio);
cqr = dasd_smalloc_request(dasd_diag_discipline.name, 0,
- datasize, device);
+ datasize, memdev);
if (IS_ERR(cqr))
return cqr;
@@ -529,7 +535,9 @@ dasd_diag_build_cp(struct dasd_device * device, struct request *req)
cqr->buildclk = get_clock();
if (req->cmd_flags & REQ_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
- cqr->device = device;
+ cqr->startdev = memdev;
+ cqr->memdev = memdev;
+ cqr->block = block;
cqr->expires = DIAG_TIMEOUT;
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -543,10 +551,15 @@ dasd_diag_free_cp(struct dasd_ccw_req *cqr, struct request *req)
int status;
status = cqr->status == DASD_CQR_DONE;
- dasd_sfree_request(cqr, cqr->device);
+ dasd_sfree_request(cqr, cqr->memdev);
return status;
}
+static void dasd_diag_handle_terminated_request(struct dasd_ccw_req *cqr)
+{
+ cqr->status = DASD_CQR_FILLED;
+};
+
/* Fill in IOCTL data for device. */
static int
dasd_diag_fill_info(struct dasd_device * device,
@@ -583,7 +596,7 @@ static struct dasd_discipline dasd_diag_discipline = {
.fill_geometry = dasd_diag_fill_geometry,
.start_IO = dasd_start_diag,
.term_IO = dasd_diag_term_IO,
- .examine_error = dasd_diag_examine_error,
+ .handle_terminated_request = dasd_diag_handle_terminated_request,
.erp_action = dasd_diag_erp_action,
.erp_postaction = dasd_diag_erp_postaction,
.build_cp = dasd_diag_build_cp,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.