* and is not licensed separately. See file COPYING for details.
*
* TODO (sorted by decreasing priority)
- * -- Kill first_open (Al Viro fixed the block layer now)
+ * -- Return sense now that rq allows it (we always auto-sense anyway).
* -- set readonly flag for CDs, set removable flag for CF readers
* -- do inquiry and verify we got a disk and not a tape (for LUN mismatch)
- * -- special case some senses, e.g. 3a/0 -> no media present, reduce retries
* -- verify the 13 conditions and do bulk resets
- * -- kill last_pipe and simply do two-state clearing on both pipes
- * -- verify protocol (bulk) from USB descriptors (maybe...)
* -- highmem
* -- move top_sense and work_bcs into separate allocations (if they survive)
* for cache purists and esoteric architectures.
* -- Allocate structure for LUN 0 before the first ub_sync_tur, avoid NULL. ?
* -- prune comments, they are too volumnous
- * -- Exterminate P3 printks
* -- Resove XXX's
- * -- Redo "benh's retries", perhaps have spin-up code to handle them. V:D=?
* -- CLEAR, CLR2STS, CLRRS seem to be ripe for refactoring.
*/
#include <linux/kernel.h>
#include <linux/usb.h>
#include <linux/usb_usual.h>
#include <linux/blkdev.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/timer.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
#include <scsi/scsi.h>
#define DRV_NAME "ub"
-#define DEVFS_NAME DRV_NAME
#define UB_MAJOR 180
UB_CMDST_DONE /* Final state */
};
-static char *ub_scsi_cmd_stname[] = {
- ". ",
- "Cmd",
- "dat",
- "c2s",
- "sts",
- "clr",
- "crs",
- "Sen",
- "fin"
-};
-
struct ub_scsi_cmd {
unsigned char cdb[UB_MAX_CDB_SIZE];
unsigned char cdb_len;
unsigned char dir; /* 0 - none, 1 - read, 3 - write. */
- unsigned char trace_index;
enum ub_scsi_cmd_state state;
unsigned int tag;
struct ub_scsi_cmd *next;
unsigned char key, asc, ascq; /* May be valid if error==-EIO */
int stat_count; /* Retries getting status. */
+ unsigned int timeo; /* jiffies until rq->timeout changes */
unsigned int len; /* Requested length */
unsigned int current_sg;
};
/*
- * The SCSI command tracing structure.
- */
-
-#define SCMD_ST_HIST_SZ 8
-#define SCMD_TRACE_SZ 63 /* Less than 4KB of 61-byte lines */
-
-struct ub_scsi_cmd_trace {
- int hcur;
- unsigned int tag;
- unsigned int req_size, act_size;
- unsigned char op;
- unsigned char dir;
- unsigned char key, asc, ascq;
- char st_hst[SCMD_ST_HIST_SZ];
-};
-
-struct ub_scsi_trace {
- int cur;
- struct ub_scsi_cmd_trace vec[SCMD_TRACE_SZ];
-};
-
-/*
* This is a direct take-off from linux/include/completion.h
* The difference is that I do not wait on this thing, just poll.
* When I want to wait (ub_probe), I just use the stock completion.
int changed; /* Media was changed */
int removable;
int readonly;
- int first_open; /* Kludge. See ub_bd_open. */
struct ub_request urq;
int openc; /* protected by ub_lock! */
/* kref is too implicit for our taste */
int reset; /* Reset is running */
+ int bad_resid;
unsigned int tagcnt;
char name[12];
struct usb_device *dev;
struct work_struct reset_work;
wait_queue_head_t reset_wait;
-
- int sg_stat[6];
- struct ub_scsi_trace tr;
};
/*
static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun,
struct ub_scsi_cmd *cmd, struct ub_request *urq);
static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_end_rq(struct request *rq, int uptodate);
+static void ub_end_rq(struct request *rq, unsigned int status);
static int ub_rw_cmd_retry(struct ub_dev *sc, struct ub_lun *lun,
struct ub_request *urq, struct ub_scsi_cmd *cmd);
static int ub_submit_scsi(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
-static void ub_urb_complete(struct urb *urb, struct pt_regs *pt);
+static void ub_urb_complete(struct urb *urb);
static void ub_scsi_action(unsigned long _dev);
static void ub_scsi_dispatch(struct ub_dev *sc);
static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd);
static int ub_submit_clear_stall(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
int stalled_pipe);
static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd);
-static void ub_reset_enter(struct ub_dev *sc);
-static void ub_reset_task(void *arg);
+static void ub_reset_enter(struct ub_dev *sc, int try);
+static void ub_reset_task(struct work_struct *work);
static int ub_sync_tur(struct ub_dev *sc, struct ub_lun *lun);
static int ub_sync_read_cap(struct ub_dev *sc, struct ub_lun *lun,
struct ub_capacity *ret);
+static int ub_sync_reset(struct ub_dev *sc);
+static int ub_probe_clear_stall(struct ub_dev *sc, int stalled_pipe);
static int ub_probe_lun(struct ub_dev *sc, int lnum);
/*
*/
#ifdef CONFIG_USB_LIBUSUAL
-#define ub_usb_ids storage_usb_ids
+#define ub_usb_ids usb_storage_usb_ids
#else
-static struct usb_device_id ub_usb_ids[] = {
+static const struct usb_device_id ub_usb_ids[] = {
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_SCSI, US_PR_BULK) },
{ }
};
static DEFINE_SPINLOCK(ub_lock); /* Locks globals and ->openc */
/*
- * The SCSI command tracing procedures.
- */
-
-static void ub_cmdtr_new(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- int n;
- struct ub_scsi_cmd_trace *t;
-
- if ((n = sc->tr.cur + 1) == SCMD_TRACE_SZ) n = 0;
- t = &sc->tr.vec[n];
-
- memset(t, 0, sizeof(struct ub_scsi_cmd_trace));
- t->tag = cmd->tag;
- t->op = cmd->cdb[0];
- t->dir = cmd->dir;
- t->req_size = cmd->len;
- t->st_hst[0] = cmd->state;
-
- sc->tr.cur = n;
- cmd->trace_index = n;
-}
-
-static void ub_cmdtr_state(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- int n;
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag) {
- if ((n = t->hcur + 1) == SCMD_ST_HIST_SZ) n = 0;
- t->st_hst[n] = cmd->state;
- t->hcur = n;
- }
-}
-
-static void ub_cmdtr_act_len(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag)
- t->act_size = cmd->act_len;
-}
-
-static void ub_cmdtr_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- unsigned char *sense)
-{
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag) {
- t->key = sense[2] & 0x0F;
- t->asc = sense[12];
- t->ascq = sense[13];
- }
-}
-
-static ssize_t ub_diag_show(struct device *dev, struct device_attribute *attr,
- char *page)
-{
- struct usb_interface *intf;
- struct ub_dev *sc;
- struct list_head *p;
- struct ub_lun *lun;
- int cnt;
- unsigned long flags;
- int nc, nh;
- int i, j;
- struct ub_scsi_cmd_trace *t;
-
- intf = to_usb_interface(dev);
- sc = usb_get_intfdata(intf);
- if (sc == NULL)
- return 0;
-
- cnt = 0;
- spin_lock_irqsave(sc->lock, flags);
-
- cnt += sprintf(page + cnt,
- "poison %d reset %d\n",
- atomic_read(&sc->poison), sc->reset);
- cnt += sprintf(page + cnt,
- "qlen %d qmax %d\n",
- sc->cmd_queue.qlen, sc->cmd_queue.qmax);
- cnt += sprintf(page + cnt,
- "sg %d %d %d %d %d .. %d\n",
- sc->sg_stat[0],
- sc->sg_stat[1],
- sc->sg_stat[2],
- sc->sg_stat[3],
- sc->sg_stat[4],
- sc->sg_stat[5]);
-
- list_for_each (p, &sc->luns) {
- lun = list_entry(p, struct ub_lun, link);
- cnt += sprintf(page + cnt,
- "lun %u changed %d removable %d readonly %d\n",
- lun->num, lun->changed, lun->removable, lun->readonly);
- }
-
- if ((nc = sc->tr.cur + 1) == SCMD_TRACE_SZ) nc = 0;
- for (j = 0; j < SCMD_TRACE_SZ; j++) {
- t = &sc->tr.vec[nc];
-
- cnt += sprintf(page + cnt, "%08x %02x", t->tag, t->op);
- if (t->op == REQUEST_SENSE) {
- cnt += sprintf(page + cnt, " [sense %x %02x %02x]",
- t->key, t->asc, t->ascq);
- } else {
- cnt += sprintf(page + cnt, " %c", UB_DIR_CHAR(t->dir));
- cnt += sprintf(page + cnt, " [%5d %5d]",
- t->req_size, t->act_size);
- }
- if ((nh = t->hcur + 1) == SCMD_ST_HIST_SZ) nh = 0;
- for (i = 0; i < SCMD_ST_HIST_SZ; i++) {
- cnt += sprintf(page + cnt, " %s",
- ub_scsi_cmd_stname[(int)t->st_hst[nh]]);
- if (++nh == SCMD_ST_HIST_SZ) nh = 0;
- }
- cnt += sprintf(page + cnt, "\n");
-
- if (++nc == SCMD_TRACE_SZ) nc = 0;
- }
-
- spin_unlock_irqrestore(sc->lock, flags);
- return cnt;
-}
-
-static DEVICE_ATTR(diag, S_IRUGO, ub_diag_show, NULL); /* N.B. World readable */
-
-/*
* The id allocator.
*
* This also stores the host for indexing by minor, which is somewhat dirty.
{
struct list_head *p;
struct ub_lun *lun;
- request_queue_t *q;
+ struct request_queue *q;
while (!list_empty(&sc->luns)) {
p = sc->luns.next;
kfree(lun);
}
+ usb_set_intfdata(sc->intf, NULL);
+ usb_put_intf(sc->intf);
+ usb_put_dev(sc->dev);
kfree(sc);
}
* The request function is our main entry point
*/
-static void ub_request_fn(request_queue_t *q)
+static void ub_request_fn(struct request_queue *q)
{
struct ub_lun *lun = q->queuedata;
struct request *rq;
- while ((rq = elv_next_request(q)) != NULL) {
+ while ((rq = blk_peek_request(q)) != NULL) {
if (ub_request_fn_1(lun, rq) != 0) {
blk_stop_queue(q);
break;
struct ub_request *urq;
int n_elem;
- if (atomic_read(&sc->poison) || lun->changed) {
- blkdev_dequeue_request(rq);
- ub_end_rq(rq, 0);
+ if (atomic_read(&sc->poison)) {
+ blk_start_request(rq);
+ ub_end_rq(rq, DID_NO_CONNECT << 16);
+ return 0;
+ }
+
+ if (lun->changed && !blk_pc_request(rq)) {
+ blk_start_request(rq);
+ ub_end_rq(rq, SAM_STAT_CHECK_CONDITION);
return 0;
}
return -1;
memset(cmd, 0, sizeof(struct ub_scsi_cmd));
- blkdev_dequeue_request(rq);
+ blk_start_request(rq);
urq = &lun->urq;
memset(urq, 0, sizeof(struct ub_request));
/*
* get scatterlist from block layer
*/
+ sg_init_table(&urq->sgv[0], UB_MAX_REQ_SG);
n_elem = blk_rq_map_sg(lun->disk->queue, rq, &urq->sgv[0]);
if (n_elem < 0) {
+ /* Impossible, because blk_rq_map_sg should not hit ENOMEM. */
printk(KERN_INFO "%s: failed request map (%d)\n",
- lun->name, n_elem); /* P3 */
+ lun->name, n_elem);
goto drop;
}
if (n_elem > UB_MAX_REQ_SG) { /* Paranoia */
goto drop;
}
urq->nsg = n_elem;
- sc->sg_stat[n_elem < 5 ? n_elem : 5]++;
if (blk_pc_request(rq)) {
ub_cmd_build_packet(sc, lun, cmd, urq);
drop:
ub_put_cmd(lun, cmd);
- ub_end_rq(rq, 0);
+ ub_end_rq(rq, DID_ERROR << 16);
return 0;
}
/*
* build the command
*
- * The call to blk_queue_hardsect_size() guarantees that request
+ * The call to blk_queue_logical_block_size() guarantees that request
* is aligned, but it is given in terms of 512 byte units, always.
*/
- block = rq->sector >> lun->capacity.bshift;
- nblks = rq->nr_sectors >> lun->capacity.bshift;
+ block = blk_rq_pos(rq) >> lun->capacity.bshift;
+ nblks = blk_rq_sectors(rq) >> lun->capacity.bshift;
cmd->cdb[0] = (cmd->dir == UB_DIR_READ)? READ_10: WRITE_10;
/* 10-byte uses 4 bytes of LBA: 2147483648KB, 2097152MB, 2048GB */
cmd->cdb[8] = nblks;
cmd->cdb_len = 10;
- cmd->len = rq->nr_sectors * 512;
+ cmd->len = blk_rq_bytes(rq);
}
static void ub_cmd_build_packet(struct ub_dev *sc, struct ub_lun *lun,
{
struct request *rq = urq->rq;
- if (rq->data_len == 0) {
+ if (blk_rq_bytes(rq) == 0) {
cmd->dir = UB_DIR_NONE;
} else {
if (rq_data_dir(rq) == WRITE)
memcpy(&cmd->cdb, rq->cmd, rq->cmd_len);
cmd->cdb_len = rq->cmd_len;
- cmd->len = rq->data_len;
+ cmd->len = blk_rq_bytes(rq);
+
+ /*
+ * To reapply this to every URB is not as incorrect as it looks.
+ * In return, we avoid any complicated tracking calculations.
+ */
+ cmd->timeo = rq->timeout;
}
static void ub_rw_cmd_done(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
struct ub_lun *lun = cmd->lun;
struct ub_request *urq = cmd->back;
struct request *rq;
- int uptodate;
+ unsigned int scsi_status;
rq = urq->rq;
if (cmd->error == 0) {
- uptodate = 1;
-
if (blk_pc_request(rq)) {
- if (cmd->act_len >= rq->data_len)
- rq->data_len = 0;
+ if (cmd->act_len >= rq->resid_len)
+ rq->resid_len = 0;
else
- rq->data_len -= cmd->act_len;
+ rq->resid_len -= cmd->act_len;
+ scsi_status = 0;
+ } else {
+ if (cmd->act_len != cmd->len) {
+ scsi_status = SAM_STAT_CHECK_CONDITION;
+ } else {
+ scsi_status = 0;
+ }
}
} else {
- uptodate = 0;
-
if (blk_pc_request(rq)) {
/* UB_SENSE_SIZE is smaller than SCSI_SENSE_BUFFERSIZE */
memcpy(rq->sense, sc->top_sense, UB_SENSE_SIZE);
rq->sense_len = UB_SENSE_SIZE;
if (sc->top_sense[0] != 0)
- rq->errors = SAM_STAT_CHECK_CONDITION;
+ scsi_status = SAM_STAT_CHECK_CONDITION;
else
- rq->errors = DID_ERROR << 16;
+ scsi_status = DID_ERROR << 16;
} else {
- if (cmd->error == -EIO) {
+ if (cmd->error == -EIO &&
+ (cmd->key == 0 ||
+ cmd->key == MEDIUM_ERROR ||
+ cmd->key == UNIT_ATTENTION)) {
if (ub_rw_cmd_retry(sc, lun, urq, cmd) == 0)
return;
}
+ scsi_status = SAM_STAT_CHECK_CONDITION;
}
}
urq->rq = NULL;
ub_put_cmd(lun, cmd);
- ub_end_rq(rq, uptodate);
+ ub_end_rq(rq, scsi_status);
blk_start_queue(lun->disk->queue);
}
-static void ub_end_rq(struct request *rq, int uptodate)
+static void ub_end_rq(struct request *rq, unsigned int scsi_status)
{
- end_that_request_first(rq, uptodate, rq->hard_nr_sectors);
- end_that_request_last(rq, uptodate);
+ int error;
+
+ if (scsi_status == 0) {
+ error = 0;
+ } else {
+ error = -EIO;
+ rq->errors = scsi_status;
+ }
+ __blk_end_request_all(rq, error);
}
static int ub_rw_cmd_retry(struct ub_dev *sc, struct ub_lun *lun,
if (atomic_read(&sc->poison))
return -ENXIO;
- ub_reset_enter(sc);
+ ub_reset_enter(sc, urq->current_try);
if (urq->current_try >= 3)
return -EIO;
urq->current_try++;
- /* P3 */ printk("%s: dir %c len/act %d/%d "
+
+ /* Remove this if anyone complains of flooding. */
+ printk(KERN_DEBUG "%s: dir %c len/act %d/%d "
"[sense %x %02x %02x] retry %d\n",
sc->name, UB_DIR_CHAR(cmd->dir), cmd->len, cmd->act_len,
cmd->key, cmd->asc, cmd->ascq, urq->current_try);
* No exceptions.
*
* Host is assumed locked.
- *
- * XXX We only support Bulk for the moment.
*/
static int ub_submit_scsi(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
{
usb_fill_bulk_urb(&sc->work_urb, sc->dev, sc->send_bulk_pipe,
bcb, US_BULK_CB_WRAP_LEN, ub_urb_complete, sc);
- /* Fill what we shouldn't be filling, because usb-storage did so. */
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
-
if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
/* XXX Clear stalls */
ub_complete(&sc->work_done);
add_timer(&sc->work_timer);
cmd->state = UB_CMDST_CMD;
- ub_cmdtr_state(sc, cmd);
return 0;
}
* the sc->lock taken) and from an interrupt (while we do NOT have
* the sc->lock taken). Therefore, bounce this off to a tasklet.
*/
-static void ub_urb_complete(struct urb *urb, struct pt_regs *pt)
+static void ub_urb_complete(struct urb *urb)
{
struct ub_dev *sc = urb->context;
ub_cmdq_pop(sc);
(*cmd->done)(sc, cmd);
} else if (cmd->state == UB_CMDST_INIT) {
- ub_cmdtr_new(sc, cmd);
if ((rc = ub_scsi_cmd_start(sc, cmd)) == 0)
break;
cmd->error = rc;
cmd->state = UB_CMDST_DONE;
- ub_cmdtr_state(sc, cmd);
} else {
if (!ub_is_completed(&sc->work_done))
break;
{
struct urb *urb = &sc->work_urb;
struct bulk_cs_wrap *bcs;
+ int endp;
int len;
int rc;
return;
}
+ endp = usb_pipeendpoint(sc->last_pipe);
+ if (usb_pipein(sc->last_pipe))
+ endp |= USB_DIR_IN;
+
if (cmd->state == UB_CMDST_CLEAR) {
if (urb->status == -EPIPE) {
/*
* We ignore the result for the halt clear.
*/
- /* reset the endpoint toggle */
- usb_settoggle(sc->dev, usb_pipeendpoint(sc->last_pipe),
- usb_pipeout(sc->last_pipe), 0);
+ usb_reset_endpoint(sc->dev, endp);
ub_state_sense(sc, cmd);
* We ignore the result for the halt clear.
*/
- /* reset the endpoint toggle */
- usb_settoggle(sc->dev, usb_pipeendpoint(sc->last_pipe),
- usb_pipeout(sc->last_pipe), 0);
+ usb_reset_endpoint(sc->dev, endp);
ub_state_stat(sc, cmd);
* We ignore the result for the halt clear.
*/
- /* reset the endpoint toggle */
- usb_settoggle(sc->dev, usb_pipeendpoint(sc->last_pipe),
- usb_pipeout(sc->last_pipe), 0);
+ usb_reset_endpoint(sc->dev, endp);
ub_state_stat_counted(sc, cmd);
return;
}
cmd->state = UB_CMDST_CLEAR;
- ub_cmdtr_state(sc, cmd);
return;
case -ESHUTDOWN: /* unplug */
case -EILSEQ: /* unplug timeout on uhci */
return;
}
cmd->state = UB_CMDST_CLR2STS;
- ub_cmdtr_state(sc, cmd);
return;
}
if (urb->status == -EOVERFLOW) {
if (urb->status != 0 ||
len != cmd->sgv[cmd->current_sg].length) {
cmd->act_len += len;
- ub_cmdtr_act_len(sc, cmd);
cmd->error = -EIO;
ub_state_stat(sc, cmd);
}
cmd->act_len += urb->actual_length;
- ub_cmdtr_act_len(sc, cmd);
if (++cmd->current_sg < cmd->nsg) {
ub_data_start(sc, cmd);
cmd->error = -EIO; /* A cheap trick... */
cmd->state = UB_CMDST_CLRRS;
- ub_cmdtr_state(sc, cmd);
return;
}
return;
}
- len = le32_to_cpu(bcs->Residue);
- if (len != cmd->len - cmd->act_len) {
- /*
- * It is all right to transfer less, the caller has
- * to check. But it's not all right if the device
- * counts disagree with our counts.
- */
- /* P3 */ printk("%s: resid %d len %d act %d\n",
- sc->name, len, cmd->len, cmd->act_len);
- goto Bad_End;
+ if (!sc->bad_resid) {
+ len = le32_to_cpu(bcs->Residue);
+ if (len != cmd->len - cmd->act_len) {
+ /*
+ * Only start ignoring if this cmd ended well.
+ */
+ if (cmd->len == cmd->act_len) {
+ printk(KERN_NOTICE "%s: "
+ "bad residual %d of %d, ignoring\n",
+ sc->name, len, cmd->len);
+ sc->bad_resid = 1;
+ }
+ }
}
switch (bcs->Status) {
ub_state_sense(sc, cmd);
return;
case US_BULK_STAT_PHASE:
- /* P3 */ printk("%s: status PHASE\n", sc->name);
goto Bad_End;
default:
printk(KERN_INFO "%s: unknown CSW status 0x%x\n",
return;
}
cmd->state = UB_CMDST_DONE;
- ub_cmdtr_state(sc, cmd);
ub_cmdq_pop(sc);
(*cmd->done)(sc, cmd);
ub_state_done(sc, cmd, -EIO);
} else {
- printk(KERN_WARNING "%s: "
- "wrong command state %d\n",
+ printk(KERN_WARNING "%s: wrong command state %d\n",
sc->name, cmd->state);
ub_state_done(sc, cmd, -EINVAL);
return;
else
pipe = sc->send_bulk_pipe;
sc->last_pipe = pipe;
- usb_fill_bulk_urb(&sc->work_urb, sc->dev, pipe,
- page_address(sg->page) + sg->offset, sg->length,
- ub_urb_complete, sc);
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
+ usb_fill_bulk_urb(&sc->work_urb, sc->dev, pipe, sg_virt(sg),
+ sg->length, ub_urb_complete, sc);
if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
/* XXX Clear stalls */
return;
}
- sc->work_timer.expires = jiffies + UB_DATA_TIMEOUT;
+ if (cmd->timeo)
+ sc->work_timer.expires = jiffies + cmd->timeo;
+ else
+ sc->work_timer.expires = jiffies + UB_DATA_TIMEOUT;
add_timer(&sc->work_timer);
cmd->state = UB_CMDST_DATA;
- ub_cmdtr_state(sc, cmd);
}
/*
cmd->error = rc;
cmd->state = UB_CMDST_DONE;
- ub_cmdtr_state(sc, cmd);
ub_cmdq_pop(sc);
(*cmd->done)(sc, cmd);
}
sc->last_pipe = sc->recv_bulk_pipe;
usb_fill_bulk_urb(&sc->work_urb, sc->dev, sc->recv_bulk_pipe,
&sc->work_bcs, US_BULK_CS_WRAP_LEN, ub_urb_complete, sc);
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
/* XXX Clear stalls */
return -1;
}
- sc->work_timer.expires = jiffies + UB_STAT_TIMEOUT;
+ if (cmd->timeo)
+ sc->work_timer.expires = jiffies + cmd->timeo;
+ else
+ sc->work_timer.expires = jiffies + UB_STAT_TIMEOUT;
add_timer(&sc->work_timer);
return 0;
}
cmd->stat_count = 0;
cmd->state = UB_CMDST_STAT;
- ub_cmdtr_state(sc, cmd);
}
/*
return;
cmd->state = UB_CMDST_STAT;
- ub_cmdtr_state(sc, cmd);
}
/*
scmd->state = UB_CMDST_INIT;
scmd->nsg = 1;
sg = &scmd->sgv[0];
- sg->page = virt_to_page(sc->top_sense);
- sg->offset = (unsigned long)sc->top_sense & (PAGE_SIZE-1);
- sg->length = UB_SENSE_SIZE;
+ sg_init_table(sg, UB_MAX_REQ_SG);
+ sg_set_page(sg, virt_to_page(sc->top_sense), UB_SENSE_SIZE,
+ (unsigned long)sc->top_sense & (PAGE_SIZE-1));
scmd->len = UB_SENSE_SIZE;
scmd->lun = cmd->lun;
scmd->done = ub_top_sense_done;
scmd->tag = sc->tagcnt++;
cmd->state = UB_CMDST_SENSE;
- ub_cmdtr_state(sc, cmd);
ub_cmdq_insert(sc, scmd);
return;
usb_fill_control_urb(&sc->work_urb, sc->dev, sc->send_ctrl_pipe,
(unsigned char*) cr, NULL, 0, ub_urb_complete, sc);
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
if ((rc = usb_submit_urb(&sc->work_urb, GFP_ATOMIC)) != 0) {
ub_complete(&sc->work_done);
struct ub_scsi_cmd *cmd;
/*
- * Ignoring scmd->act_len, because the buffer was pre-zeroed.
- */
- ub_cmdtr_sense(sc, scmd, sense);
-
- /*
* Find the command which triggered the unit attention or a check,
* save the sense into it, and advance its state machine.
*/
return;
}
if (cmd->state != UB_CMDST_SENSE) {
- printk(KERN_WARNING "%s: "
- "sense done with bad cmd state %d\n",
+ printk(KERN_WARNING "%s: sense done with bad cmd state %d\n",
sc->name, cmd->state);
return;
}
+ /*
+ * Ignoring scmd->act_len, because the buffer was pre-zeroed.
+ */
cmd->key = sense[2] & 0x0F;
cmd->asc = sense[12];
cmd->ascq = sense[13];
* Reset management
*/
-static void ub_reset_enter(struct ub_dev *sc)
+static void ub_reset_enter(struct ub_dev *sc, int try)
{
if (sc->reset) {
/* This happens often on multi-LUN devices. */
return;
}
- sc->reset = 1;
+ sc->reset = try + 1;
#if 0 /* Not needed because the disconnect waits for us. */
unsigned long flags;
#endif
#if 0 /* We let them stop themselves. */
- struct list_head *p;
struct ub_lun *lun;
- list_for_each(p, &sc->luns) {
- lun = list_entry(p, struct ub_lun, link);
+ list_for_each_entry(lun, &sc->luns, link) {
blk_stop_queue(lun->disk->queue);
}
#endif
schedule_work(&sc->reset_work);
}
-static void ub_reset_task(void *arg)
+static void ub_reset_task(struct work_struct *work)
{
- struct ub_dev *sc = arg;
+ struct ub_dev *sc = container_of(work, struct ub_dev, reset_work);
unsigned long flags;
- struct list_head *p;
struct ub_lun *lun;
- int lkr, rc;
+ int rc;
if (!sc->reset) {
printk(KERN_WARNING "%s: Running reset unrequested\n",
}
if (atomic_read(&sc->poison)) {
- printk(KERN_NOTICE "%s: Not resetting disconnected device\n",
- sc->name); /* P3 This floods. Remove soon. XXX */
+ ;
+ } else if ((sc->reset & 1) == 0) {
+ ub_sync_reset(sc);
+ msleep(700); /* usb-storage sleeps 6s (!) */
+ ub_probe_clear_stall(sc, sc->recv_bulk_pipe);
+ ub_probe_clear_stall(sc, sc->send_bulk_pipe);
} else if (sc->dev->actconfig->desc.bNumInterfaces != 1) {
- printk(KERN_NOTICE "%s: Not resetting multi-interface device\n",
- sc->name); /* P3 This floods. Remove soon. XXX */
+ ;
} else {
- if ((lkr = usb_lock_device_for_reset(sc->dev, sc->intf)) < 0) {
+ rc = usb_lock_device_for_reset(sc->dev, sc->intf);
+ if (rc < 0) {
printk(KERN_NOTICE
"%s: usb_lock_device_for_reset failed (%d)\n",
- sc->name, lkr);
+ sc->name, rc);
} else {
rc = usb_reset_device(sc->dev);
if (rc < 0) {
"usb_lock_device_for_reset failed (%d)\n",
sc->name, rc);
}
-
- if (lkr)
- usb_unlock_device(sc->dev);
+ usb_unlock_device(sc->dev);
}
}
spin_lock_irqsave(sc->lock, flags);
sc->reset = 0;
tasklet_schedule(&sc->tasklet);
- list_for_each(p, &sc->luns) {
- lun = list_entry(p, struct ub_lun, link);
+ list_for_each_entry(lun, &sc->luns, link) {
blk_start_queue(lun->disk->queue);
}
wake_up(&sc->reset_wait);
}
/*
+ * XXX Reset brackets are too much hassle to implement, so just stub them
+ * in order to prevent forced unbinding (which deadlocks solid when our
+ * ->disconnect method waits for the reset to complete and this kills keventd).
+ *
+ * XXX Tell Alan to move usb_unlock_device inside of usb_reset_device,
+ * or else the post_reset is invoked, and restats I/O on a locked device.
+ */
+static int ub_pre_reset(struct usb_interface *iface) {
+ return 0;
+}
+
+static int ub_post_reset(struct usb_interface *iface) {
+ return 0;
+}
+
+/*
* This is called from a process context.
*/
static void ub_revalidate(struct ub_dev *sc, struct ub_lun *lun)
* This is mostly needed to keep refcounting, but also to support
* media checks on removable media drives.
*/
-static int ub_bd_open(struct inode *inode, struct file *filp)
+static int ub_bd_open(struct block_device *bdev, fmode_t mode)
{
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ub_lun *lun;
- struct ub_dev *sc;
+ struct ub_lun *lun = bdev->bd_disk->private_data;
+ struct ub_dev *sc = lun->udev;
unsigned long flags;
int rc;
- if ((lun = disk->private_data) == NULL)
- return -ENXIO;
- sc = lun->udev;
-
spin_lock_irqsave(&ub_lock, flags);
if (atomic_read(&sc->poison)) {
spin_unlock_irqrestore(&ub_lock, flags);
sc->openc++;
spin_unlock_irqrestore(&ub_lock, flags);
- /*
- * This is a workaround for a specific problem in our block layer.
- * In 2.6.9, register_disk duplicates the code from rescan_partitions.
- * However, if we do add_disk with a device which persistently reports
- * a changed media, add_disk calls register_disk, which does do_open,
- * which will call rescan_paritions for changed media. After that,
- * register_disk attempts to do it all again and causes double kobject
- * registration and a eventually an oops on module removal.
- *
- * The bottom line is, Al Viro says that we should not allow
- * bdev->bd_invalidated to be set when doing add_disk no matter what.
- */
- if (lun->first_open) {
- lun->first_open = 0;
- if (lun->changed) {
- rc = -ENOMEDIUM;
- goto err_open;
- }
- }
-
if (lun->removable || lun->readonly)
- check_disk_change(inode->i_bdev);
+ check_disk_change(bdev);
/*
* The sd.c considers ->media_present and ->changed not equivalent,
* under some pretty murky conditions (a failure of READ CAPACITY).
* We may need it one day.
*/
- if (lun->removable && lun->changed && !(filp->f_flags & O_NDELAY)) {
+ if (lun->removable && lun->changed && !(mode & FMODE_NDELAY)) {
rc = -ENOMEDIUM;
goto err_open;
}
- if (lun->readonly && (filp->f_mode & FMODE_WRITE)) {
+ if (lun->readonly && (mode & FMODE_WRITE)) {
rc = -EROFS;
goto err_open;
}
/*
*/
-static int ub_bd_release(struct inode *inode, struct file *filp)
+static int ub_bd_release(struct gendisk *disk, fmode_t mode)
{
- struct gendisk *disk = inode->i_bdev->bd_disk;
struct ub_lun *lun = disk->private_data;
struct ub_dev *sc = lun->udev;
/*
* The ioctl interface.
*/
-static int ub_bd_ioctl(struct inode *inode, struct file *filp,
+static int ub_bd_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg)
{
- struct gendisk *disk = inode->i_bdev->bd_disk;
+ struct gendisk *disk = bdev->bd_disk;
void __user *usermem = (void __user *) arg;
- return scsi_cmd_ioctl(filp, disk, cmd, usermem);
+ return scsi_cmd_ioctl(disk->queue, disk, mode, cmd, usermem);
}
/*
- * This is called once a new disk was seen by the block layer or by ub_probe().
+ * This is called by check_disk_change if we reported a media change.
* The main onjective here is to discover the features of the media such as
* the capacity, read-only status, etc. USB storage generally does not
* need to be spun up, but if we needed it, this would be the place.
ub_revalidate(lun->udev, lun);
/* XXX Support sector size switching like in sr.c */
- blk_queue_hardsect_size(disk->queue, lun->capacity.bsize);
+ blk_queue_logical_block_size(disk->queue, lun->capacity.bsize);
set_capacity(disk, lun->capacity.nsec);
// set_disk_ro(sdkp->disk, lun->readonly);
return lun->changed;
}
-static struct block_device_operations ub_bd_fops = {
+static const struct block_device_operations ub_bd_fops = {
.owner = THIS_MODULE,
.open = ub_bd_open,
.release = ub_bd_release,
- .ioctl = ub_bd_ioctl,
+ .locked_ioctl = ub_bd_ioctl,
.media_changed = ub_bd_media_changed,
.revalidate_disk = ub_bd_revalidate,
};
init_completion(&compl);
rc = -ENOMEM;
- if ((cmd = kmalloc(ALLOC_SIZE, GFP_KERNEL)) == NULL)
+ if ((cmd = kzalloc(ALLOC_SIZE, GFP_KERNEL)) == NULL)
goto err_alloc;
- memset(cmd, 0, ALLOC_SIZE);
cmd->cdb[0] = TEST_UNIT_READY;
cmd->cdb_len = 6;
rc = ub_submit_scsi(sc, cmd);
spin_unlock_irqrestore(sc->lock, flags);
- if (rc != 0) {
- printk("ub: testing ready: submit error (%d)\n", rc); /* P3 */
+ if (rc != 0)
goto err_submit;
- }
wait_for_completion(&compl);
init_completion(&compl);
rc = -ENOMEM;
- if ((cmd = kmalloc(ALLOC_SIZE, GFP_KERNEL)) == NULL)
+ if ((cmd = kzalloc(ALLOC_SIZE, GFP_KERNEL)) == NULL)
goto err_alloc;
- memset(cmd, 0, ALLOC_SIZE);
p = (char *)cmd + sizeof(struct ub_scsi_cmd);
cmd->cdb[0] = 0x25;
cmd->state = UB_CMDST_INIT;
cmd->nsg = 1;
sg = &cmd->sgv[0];
- sg->page = virt_to_page(p);
- sg->offset = (unsigned long)p & (PAGE_SIZE-1);
- sg->length = 8;
+ sg_init_table(sg, UB_MAX_REQ_SG);
+ sg_set_page(sg, virt_to_page(p), 8, (unsigned long)p & (PAGE_SIZE-1));
cmd->len = 8;
cmd->lun = lun;
cmd->done = ub_probe_done;
rc = ub_submit_scsi(sc, cmd);
spin_unlock_irqrestore(sc->lock, flags);
- if (rc != 0) {
- printk("ub: reading capacity: submit error (%d)\n", rc); /* P3 */
+ if (rc != 0)
goto err_submit;
- }
wait_for_completion(&compl);
if (cmd->error != 0) {
- printk("ub: reading capacity: error %d\n", cmd->error); /* P3 */
rc = -EIO;
goto err_read;
}
if (cmd->act_len != 8) {
- printk("ub: reading capacity: size %d\n", cmd->act_len); /* P3 */
rc = -EIO;
goto err_read;
}
case 2048: shift = 2; break;
case 4096: shift = 3; break;
default:
- printk("ub: Bad sector size %u\n", bsize); /* P3 */
rc = -EDOM;
goto err_inv_bsize;
}
/*
*/
-static void ub_probe_urb_complete(struct urb *urb, struct pt_regs *pt)
+static void ub_probe_urb_complete(struct urb *urb)
{
struct completion *cop = urb->context;
complete(cop);
}
/*
+ * Reset with a Bulk reset.
+ */
+static int ub_sync_reset(struct ub_dev *sc)
+{
+ int ifnum = sc->intf->cur_altsetting->desc.bInterfaceNumber;
+ struct usb_ctrlrequest *cr;
+ struct completion compl;
+ struct timer_list timer;
+ int rc;
+
+ init_completion(&compl);
+
+ cr = &sc->work_cr;
+ cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+ cr->bRequest = US_BULK_RESET_REQUEST;
+ cr->wValue = cpu_to_le16(0);
+ cr->wIndex = cpu_to_le16(ifnum);
+ cr->wLength = cpu_to_le16(0);
+
+ usb_fill_control_urb(&sc->work_urb, sc->dev, sc->send_ctrl_pipe,
+ (unsigned char*) cr, NULL, 0, ub_probe_urb_complete, &compl);
+
+ if ((rc = usb_submit_urb(&sc->work_urb, GFP_KERNEL)) != 0) {
+ printk(KERN_WARNING
+ "%s: Unable to submit a bulk reset (%d)\n", sc->name, rc);
+ return rc;
+ }
+
+ init_timer(&timer);
+ timer.function = ub_probe_timeout;
+ timer.data = (unsigned long) &compl;
+ timer.expires = jiffies + UB_CTRL_TIMEOUT;
+ add_timer(&timer);
+
+ wait_for_completion(&compl);
+
+ del_timer_sync(&timer);
+ usb_kill_urb(&sc->work_urb);
+
+ return sc->work_urb.status;
+}
+
+/*
* Get number of LUNs by the way of Bulk GetMaxLUN command.
*/
static int ub_sync_getmaxlun(struct ub_dev *sc)
usb_fill_control_urb(&sc->work_urb, sc->dev, sc->recv_ctrl_pipe,
(unsigned char*) cr, p, 1, ub_probe_urb_complete, &compl);
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
- if ((rc = usb_submit_urb(&sc->work_urb, GFP_KERNEL)) != 0) {
- if (rc == -EPIPE) {
- printk("%s: Stall submitting GetMaxLUN, using 1 LUN\n",
- sc->name); /* P3 */
- } else {
- printk(KERN_NOTICE
- "%s: Unable to submit GetMaxLUN (%d)\n",
- sc->name, rc);
- }
+ if ((rc = usb_submit_urb(&sc->work_urb, GFP_KERNEL)) != 0)
goto err_submit;
- }
init_timer(&timer);
timer.function = ub_probe_timeout;
del_timer_sync(&timer);
usb_kill_urb(&sc->work_urb);
- if ((rc = sc->work_urb.status) < 0) {
- if (rc == -EPIPE) {
- printk("%s: Stall at GetMaxLUN, using 1 LUN\n",
- sc->name); /* P3 */
- } else {
- printk(KERN_NOTICE
- "%s: Error at GetMaxLUN (%d)\n",
- sc->name, rc);
- }
+ if ((rc = sc->work_urb.status) < 0)
goto err_io;
- }
if (sc->work_urb.actual_length != 1) {
- printk("%s: GetMaxLUN returned %d bytes\n", sc->name,
- sc->work_urb.actual_length); /* P3 */
nluns = 0;
} else {
if ((nluns = *p) == 55) {
if (nluns > UB_MAX_LUNS)
nluns = UB_MAX_LUNS;
}
- printk("%s: GetMaxLUN returned %d, using %d LUNs\n", sc->name,
- *p, nluns); /* P3 */
}
kfree(p);
usb_fill_control_urb(&sc->work_urb, sc->dev, sc->send_ctrl_pipe,
(unsigned char*) cr, NULL, 0, ub_probe_urb_complete, &compl);
- sc->work_urb.actual_length = 0;
- sc->work_urb.error_count = 0;
- sc->work_urb.status = 0;
if ((rc = usb_submit_urb(&sc->work_urb, GFP_KERNEL)) != 0) {
printk(KERN_WARNING
del_timer_sync(&timer);
usb_kill_urb(&sc->work_urb);
- /* reset the endpoint toggle */
- usb_settoggle(sc->dev, endp, usb_pipeout(sc->last_pipe), 0);
+ usb_reset_endpoint(sc->dev, endp);
return 0;
}
ep = &altsetting->endpoint[i].desc;
/* Is it a BULK endpoint? */
- if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_BULK) {
+ if (usb_endpoint_xfer_bulk(ep)) {
/* BULK in or out? */
- if (ep->bEndpointAddress & USB_DIR_IN)
- ep_in = ep;
- else
- ep_out = ep;
+ if (usb_endpoint_dir_in(ep)) {
+ if (ep_in == NULL)
+ ep_in = ep;
+ } else {
+ if (ep_out == NULL)
+ ep_out = ep;
+ }
}
}
if (ep_in == NULL || ep_out == NULL) {
- printk(KERN_NOTICE "%s: failed endpoint check\n",
- sc->name);
+ printk(KERN_NOTICE "%s: failed endpoint check\n", sc->name);
return -ENODEV;
}
sc->send_ctrl_pipe = usb_sndctrlpipe(dev, 0);
sc->recv_ctrl_pipe = usb_rcvctrlpipe(dev, 0);
sc->send_bulk_pipe = usb_sndbulkpipe(dev,
- ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ usb_endpoint_num(ep_out));
sc->recv_bulk_pipe = usb_rcvbulkpipe(dev,
- ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ usb_endpoint_num(ep_in));
return 0;
}
return -ENXIO;
rc = -ENOMEM;
- if ((sc = kmalloc(sizeof(struct ub_dev), GFP_KERNEL)) == NULL)
+ if ((sc = kzalloc(sizeof(struct ub_dev), GFP_KERNEL)) == NULL)
goto err_core;
- memset(sc, 0, sizeof(struct ub_dev));
sc->lock = ub_next_lock();
INIT_LIST_HEAD(&sc->luns);
usb_init_urb(&sc->work_urb);
tasklet_init(&sc->tasklet, ub_scsi_action, (unsigned long)sc);
atomic_set(&sc->poison, 0);
- INIT_WORK(&sc->reset_work, ub_reset_task, sc);
+ INIT_WORK(&sc->reset_work, ub_reset_task);
init_waitqueue_head(&sc->reset_wait);
init_timer(&sc->work_timer);
// sc->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
usb_set_intfdata(intf, sc);
usb_get_dev(sc->dev);
- // usb_get_intf(sc->intf); /* Do we need this? */
+ /*
+ * Since we give the interface struct to the block level through
+ * disk->driverfs_dev, we have to pin it. Otherwise, block_uevent
+ * oopses on close after a disconnect (kernels 2.6.16 and up).
+ */
+ usb_get_intf(sc->intf);
snprintf(sc->name, 12, DRV_NAME "(%d.%d)",
sc->dev->bus->busnum, sc->dev->devnum);
if (ub_get_pipes(sc, sc->dev, intf) != 0)
goto err_dev_desc;
- if (device_create_file(&sc->intf->dev, &dev_attr_diag) != 0)
- goto err_diag;
-
/*
* At this point, all USB initialization is done, do upper layer.
* We really hate halfway initialized structures, so from the
* has to succeed, so we clear checks with an additional one here.
* In any case it's not our business how revaliadation is implemented.
*/
- for (i = 0; i < 3; i++) { /* Retries for benh's key */
+ for (i = 0; i < 3; i++) { /* Retries for the schwag key from KS'04 */
if ((rc = ub_sync_tur(sc, NULL)) <= 0) break;
if (rc != 0x6) break;
msleep(10);
nluns = 1;
for (i = 0; i < 3; i++) {
- if ((rc = ub_sync_getmaxlun(sc)) < 0) {
- /*
- * This segment is taken from usb-storage. They say
- * that ZIP-100 needs this, but my own ZIP-100 works
- * fine without this.
- * Still, it does not seem to hurt anything.
- */
- if (rc == -EPIPE) {
- ub_probe_clear_stall(sc, sc->recv_bulk_pipe);
- ub_probe_clear_stall(sc, sc->send_bulk_pipe);
- }
+ if ((rc = ub_sync_getmaxlun(sc)) < 0)
break;
- }
if (rc != 0) {
nluns = rc;
break;
}
return 0;
- /* device_remove_file(&sc->intf->dev, &dev_attr_diag); */
-err_diag:
err_dev_desc:
usb_set_intfdata(intf, NULL);
- // usb_put_intf(sc->intf);
+ usb_put_intf(sc->intf);
usb_put_dev(sc->dev);
kfree(sc);
err_core:
static int ub_probe_lun(struct ub_dev *sc, int lnum)
{
struct ub_lun *lun;
- request_queue_t *q;
+ struct request_queue *q;
struct gendisk *disk;
int rc;
rc = -ENOMEM;
- if ((lun = kmalloc(sizeof(struct ub_lun), GFP_KERNEL)) == NULL)
+ if ((lun = kzalloc(sizeof(struct ub_lun), GFP_KERNEL)) == NULL)
goto err_alloc;
- memset(lun, 0, sizeof(struct ub_lun));
lun->num = lnum;
rc = -ENOSR;
goto err_id;
lun->udev = sc;
- list_add(&lun->link, &sc->luns);
snprintf(lun->name, 16, DRV_NAME "%c(%d.%d.%d)",
lun->id + 'a', sc->dev->bus->busnum, sc->dev->devnum, lun->num);
lun->removable = 1; /* XXX Query this from the device */
lun->changed = 1; /* ub_revalidate clears only */
- lun->first_open = 1;
ub_revalidate(sc, lun);
rc = -ENOMEM;
if ((disk = alloc_disk(UB_PARTS_PER_LUN)) == NULL)
goto err_diskalloc;
- lun->disk = disk;
sprintf(disk->disk_name, DRV_NAME "%c", lun->id + 'a');
- sprintf(disk->devfs_name, DEVFS_NAME "/%c", lun->id + 'a');
disk->major = UB_MAJOR;
disk->first_minor = lun->id * UB_PARTS_PER_LUN;
disk->fops = &ub_bd_fops;
disk->queue = q;
blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
- blk_queue_max_hw_segments(q, UB_MAX_REQ_SG);
- blk_queue_max_phys_segments(q, UB_MAX_REQ_SG);
+ blk_queue_max_segments(q, UB_MAX_REQ_SG);
blk_queue_segment_boundary(q, 0xffffffff); /* Dubious. */
- blk_queue_max_sectors(q, UB_MAX_SECTORS);
- blk_queue_hardsect_size(q, lun->capacity.bsize);
+ blk_queue_max_hw_sectors(q, UB_MAX_SECTORS);
+ blk_queue_logical_block_size(q, lun->capacity.bsize);
+ lun->disk = disk;
q->queuedata = lun;
+ list_add(&lun->link, &sc->luns);
set_capacity(disk, lun->capacity.nsec);
if (lun->removable)
err_blkqinit:
put_disk(disk);
err_diskalloc:
- list_del(&lun->link);
ub_id_put(lun->id);
err_id:
kfree(lun);
static void ub_disconnect(struct usb_interface *intf)
{
struct ub_dev *sc = usb_get_intfdata(intf);
- struct list_head *p;
struct ub_lun *lun;
- struct gendisk *disk;
unsigned long flags;
/*
spin_unlock_irqrestore(&ub_lock, flags);
/*
- * Fence stall clearnings, operations triggered by unlinkings and so on.
+ * Fence stall clearings, operations triggered by unlinkings and so on.
* We do not attempt to unlink any URBs, because we do not trust the
* unlink paths in HC drivers. Also, we get -84 upon disconnect anyway.
*/
while ((cmd = ub_cmdq_peek(sc)) != NULL) {
cmd->error = -ENOTCONN;
cmd->state = UB_CMDST_DONE;
- ub_cmdtr_state(sc, cmd);
ub_cmdq_pop(sc);
(*cmd->done)(sc, cmd);
cnt++;
/*
* Unregister the upper layer.
*/
- list_for_each (p, &sc->luns) {
- lun = list_entry(p, struct ub_lun, link);
- disk = lun->disk;
- if (disk->flags & GENHD_FL_UP)
- del_gendisk(disk);
+ list_for_each_entry(lun, &sc->luns, link) {
+ del_gendisk(lun->disk);
/*
* I wish I could do:
- * set_bit(QUEUE_FLAG_DEAD, &q->queue_flags);
+ * queue_flag_set(QUEUE_FLAG_DEAD, q);
* As it is, we rely on our internal poisoning and let
* the upper levels to spin furiously failing all the I/O.
*/
spin_unlock_irqrestore(sc->lock, flags);
/*
- * There is virtually no chance that other CPU runs times so long
+ * There is virtually no chance that other CPU runs a timeout so long
* after ub_urb_complete should have called del_timer, but only if HCD
* didn't forget to deliver a callback on unlink.
*/
* and no URBs left in transit.
*/
- device_remove_file(&sc->intf->dev, &dev_attr_diag);
- usb_set_intfdata(intf, NULL);
- // usb_put_intf(sc->intf);
- sc->intf = NULL;
- usb_put_dev(sc->dev);
- sc->dev = NULL;
-
ub_put(sc);
}
.probe = ub_probe,
.disconnect = ub_disconnect,
.id_table = ub_usb_ids,
+ .pre_reset = ub_pre_reset,
+ .post_reset = ub_post_reset,
};
static int __init ub_init(void)
if ((rc = register_blkdev(UB_MAJOR, DRV_NAME)) != 0)
goto err_regblkdev;
- devfs_mk_dir(DEVFS_NAME);
if ((rc = usb_register(&ub_driver)) != 0)
goto err_register;
return 0;
err_register:
- devfs_remove(DEVFS_NAME);
unregister_blkdev(UB_MAJOR, DRV_NAME);
err_regblkdev:
return rc;
{
usb_deregister(&ub_driver);
- devfs_remove(DEVFS_NAME);
unregister_blkdev(UB_MAJOR, DRV_NAME);
usb_usual_clear_present(USB_US_TYPE_UB);
}