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path: root/drivers/scsi/ch.c
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Diffstat (limited to 'drivers/scsi/ch.c')
-rw-r--r--drivers/scsi/ch.c92
1 files changed, 50 insertions, 42 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c
index 7ab29eaec6f3..fa07a6f54003 100644
--- a/drivers/scsi/ch.c
+++ b/drivers/scsi/ch.c
@@ -102,7 +102,9 @@ do { \
#define MAX_RETRIES 1
-static struct class * ch_sysfs_class;
+static const struct class ch_sysfs_class = {
+ .name = "scsi_changer",
+};
typedef struct {
struct kref ref;
@@ -113,7 +115,6 @@ typedef struct {
struct scsi_device **dt; /* ptrs to data transfer elements */
u_int firsts[CH_TYPES];
u_int counts[CH_TYPES];
- u_int unit_attention;
u_int voltags;
struct mutex lock;
} scsi_changer;
@@ -184,34 +185,39 @@ static int ch_find_errno(struct scsi_sense_hdr *sshdr)
static int
ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len,
- void *buffer, unsigned buflength,
- enum dma_data_direction direction)
+ void *buffer, unsigned int buflength, enum req_op op)
{
- int errno, retries = 0, timeout, result;
+ int errno = 0, timeout, result;
struct scsi_sense_hdr sshdr;
+ struct scsi_failure failure_defs[] = {
+ {
+ .sense = UNIT_ATTENTION,
+ .asc = SCMD_FAILURE_ASC_ANY,
+ .ascq = SCMD_FAILURE_ASCQ_ANY,
+ .allowed = 3,
+ .result = SAM_STAT_CHECK_CONDITION,
+ },
+ {}
+ };
+ struct scsi_failures failures = {
+ .failure_definitions = failure_defs,
+ };
+ const struct scsi_exec_args exec_args = {
+ .sshdr = &sshdr,
+ .failures = &failures,
+ };
timeout = (cmd[0] == INITIALIZE_ELEMENT_STATUS)
? timeout_init : timeout_move;
- retry:
- errno = 0;
- result = scsi_execute_req(ch->device, cmd, direction, buffer,
- buflength, &sshdr, timeout * HZ,
- MAX_RETRIES, NULL);
+ result = scsi_execute_cmd(ch->device, cmd, op, buffer, buflength,
+ timeout * HZ, MAX_RETRIES, &exec_args);
if (result < 0)
return result;
if (scsi_sense_valid(&sshdr)) {
if (debug)
scsi_print_sense_hdr(ch->device, ch->name, &sshdr);
errno = ch_find_errno(&sshdr);
-
- switch(sshdr.sense_key) {
- case UNIT_ATTENTION:
- ch->unit_attention = 1;
- if (retries++ < 3)
- goto retry;
- break;
- }
}
return errno;
}
@@ -254,7 +260,7 @@ ch_read_element_status(scsi_changer *ch, u_int elem, char *data)
cmd[5] = 1;
cmd[9] = 255;
if (0 == (result = ch_do_scsi(ch, cmd, 12,
- buffer, 256, DMA_FROM_DEVICE))) {
+ buffer, 256, REQ_OP_DRV_IN))) {
if (((buffer[16] << 8) | buffer[17]) != elem) {
DPRINTK("asked for element 0x%02x, got 0x%02x\n",
elem,(buffer[16] << 8) | buffer[17]);
@@ -284,7 +290,7 @@ ch_init_elem(scsi_changer *ch)
memset(cmd,0,sizeof(cmd));
cmd[0] = INITIALIZE_ELEMENT_STATUS;
cmd[1] = (ch->device->lun & 0x7) << 5;
- err = ch_do_scsi(ch, cmd, 6, NULL, 0, DMA_NONE);
+ err = ch_do_scsi(ch, cmd, 6, NULL, 0, REQ_OP_DRV_IN);
VPRINTK(KERN_INFO, "... finished\n");
return err;
}
@@ -306,10 +312,10 @@ ch_readconfig(scsi_changer *ch)
cmd[1] = (ch->device->lun & 0x7) << 5;
cmd[2] = 0x1d;
cmd[4] = 255;
- result = ch_do_scsi(ch, cmd, 10, buffer, 255, DMA_FROM_DEVICE);
+ result = ch_do_scsi(ch, cmd, 10, buffer, 255, REQ_OP_DRV_IN);
if (0 != result) {
cmd[1] |= (1<<3);
- result = ch_do_scsi(ch, cmd, 10, buffer, 255, DMA_FROM_DEVICE);
+ result = ch_do_scsi(ch, cmd, 10, buffer, 255, REQ_OP_DRV_IN);
}
if (0 == result) {
ch->firsts[CHET_MT] =
@@ -434,7 +440,7 @@ ch_position(scsi_changer *ch, u_int trans, u_int elem, int rotate)
cmd[4] = (elem >> 8) & 0xff;
cmd[5] = elem & 0xff;
cmd[8] = rotate ? 1 : 0;
- return ch_do_scsi(ch, cmd, 10, NULL, 0, DMA_NONE);
+ return ch_do_scsi(ch, cmd, 10, NULL, 0, REQ_OP_DRV_IN);
}
static int
@@ -455,7 +461,7 @@ ch_move(scsi_changer *ch, u_int trans, u_int src, u_int dest, int rotate)
cmd[6] = (dest >> 8) & 0xff;
cmd[7] = dest & 0xff;
cmd[10] = rotate ? 1 : 0;
- return ch_do_scsi(ch, cmd, 12, NULL,0, DMA_NONE);
+ return ch_do_scsi(ch, cmd, 12, NULL, 0, REQ_OP_DRV_IN);
}
static int
@@ -481,7 +487,7 @@ ch_exchange(scsi_changer *ch, u_int trans, u_int src,
cmd[9] = dest2 & 0xff;
cmd[10] = (rotate1 ? 1 : 0) | (rotate2 ? 2 : 0);
- return ch_do_scsi(ch, cmd, 12, NULL, 0, DMA_NONE);
+ return ch_do_scsi(ch, cmd, 12, NULL, 0, REQ_OP_DRV_IN);
}
static void
@@ -531,7 +537,7 @@ ch_set_voltag(scsi_changer *ch, u_int elem,
memcpy(buffer,tag,32);
ch_check_voltag(buffer);
- result = ch_do_scsi(ch, cmd, 12, buffer, 256, DMA_TO_DEVICE);
+ result = ch_do_scsi(ch, cmd, 12, buffer, 256, REQ_OP_DRV_OUT);
kfree(buffer);
return result;
}
@@ -658,19 +664,23 @@ static long ch_ioctl(struct file *file,
memset(&vparams,0,sizeof(vparams));
if (ch->counts[CHET_V1]) {
vparams.cvp_n1 = ch->counts[CHET_V1];
- strncpy(vparams.cvp_label1,vendor_labels[0],16);
+ strscpy(vparams.cvp_label1, vendor_labels[0],
+ sizeof(vparams.cvp_label1));
}
if (ch->counts[CHET_V2]) {
vparams.cvp_n2 = ch->counts[CHET_V2];
- strncpy(vparams.cvp_label2,vendor_labels[1],16);
+ strscpy(vparams.cvp_label2, vendor_labels[1],
+ sizeof(vparams.cvp_label2));
}
if (ch->counts[CHET_V3]) {
vparams.cvp_n3 = ch->counts[CHET_V3];
- strncpy(vparams.cvp_label3,vendor_labels[2],16);
+ strscpy(vparams.cvp_label3, vendor_labels[2],
+ sizeof(vparams.cvp_label3));
}
if (ch->counts[CHET_V4]) {
vparams.cvp_n4 = ch->counts[CHET_V4];
- strncpy(vparams.cvp_label4,vendor_labels[3],16);
+ strscpy(vparams.cvp_label4, vendor_labels[3],
+ sizeof(vparams.cvp_label4));
}
if (copy_to_user(argp, &vparams, sizeof(vparams)))
return -EFAULT;
@@ -799,8 +809,7 @@ static long ch_ioctl(struct file *file,
ch_cmd[5] = 1;
ch_cmd[9] = 255;
- result = ch_do_scsi(ch, ch_cmd, 12,
- buffer, 256, DMA_FROM_DEVICE);
+ result = ch_do_scsi(ch, ch_cmd, 12, buffer, 256, REQ_OP_DRV_IN);
if (!result) {
cge.cge_status = buffer[18];
cge.cge_flags = 0;
@@ -877,7 +886,8 @@ static long ch_ioctl(struct file *file,
}
default:
- return scsi_ioctl(ch->device, file->f_mode, cmd, argp);
+ return scsi_ioctl(ch->device, file->f_mode & FMODE_WRITE, cmd,
+ argp);
}
}
@@ -922,7 +932,7 @@ static int ch_probe(struct device *dev)
mutex_init(&ch->lock);
kref_init(&ch->ref);
ch->device = sd;
- class_dev = device_create(ch_sysfs_class, dev,
+ class_dev = device_create(&ch_sysfs_class, dev,
MKDEV(SCSI_CHANGER_MAJOR, ch->minor), ch,
"s%s", ch->name);
if (IS_ERR(class_dev)) {
@@ -947,7 +957,7 @@ static int ch_probe(struct device *dev)
return 0;
destroy_dev:
- device_destroy(ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
+ device_destroy(&ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
put_device:
scsi_device_put(sd);
remove_idr:
@@ -966,7 +976,7 @@ static int ch_remove(struct device *dev)
dev_set_drvdata(dev, NULL);
spin_unlock(&ch_index_lock);
- device_destroy(ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR,ch->minor));
+ device_destroy(&ch_sysfs_class, MKDEV(SCSI_CHANGER_MAJOR, ch->minor));
scsi_device_put(ch->device);
kref_put(&ch->ref, ch_destroy);
return 0;
@@ -995,11 +1005,9 @@ static int __init init_ch_module(void)
int rc;
printk(KERN_INFO "SCSI Media Changer driver v" VERSION " \n");
- ch_sysfs_class = class_create(THIS_MODULE, "scsi_changer");
- if (IS_ERR(ch_sysfs_class)) {
- rc = PTR_ERR(ch_sysfs_class);
+ rc = class_register(&ch_sysfs_class);
+ if (rc)
return rc;
- }
rc = register_chrdev(SCSI_CHANGER_MAJOR,"ch",&changer_fops);
if (rc < 0) {
printk("Unable to get major %d for SCSI-Changer\n",
@@ -1014,7 +1022,7 @@ static int __init init_ch_module(void)
fail2:
unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
fail1:
- class_destroy(ch_sysfs_class);
+ class_unregister(&ch_sysfs_class);
return rc;
}
@@ -1022,7 +1030,7 @@ static void __exit exit_ch_module(void)
{
scsi_unregister_driver(&ch_template.gendrv);
unregister_chrdev(SCSI_CHANGER_MAJOR, "ch");
- class_destroy(ch_sysfs_class);
+ class_unregister(&ch_sysfs_class);
idr_destroy(&ch_index_idr);
}
generated by cgit (git 2.34.1) at 2025-12-21 19:31:49 +0000