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path: root/drivers/scsi/scsi_transport_spi.c
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Diffstat (limited to 'drivers/scsi/scsi_transport_spi.c')
-rw-r--r--drivers/scsi/scsi_transport_spi.c103
1 files changed, 90 insertions, 13 deletions
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index b29360ed0bd..cf08071a9b6 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -25,6 +25,7 @@
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
+#include <linux/slab.h>
#include <scsi/scsi.h>
#include "scsi_priv.h"
#include <scsi/scsi_device.h>
@@ -46,6 +47,22 @@
#define DV_RETRIES 3 /* should only need at most
* two cc/ua clears */
+/* Our blacklist flags */
+enum {
+ SPI_BLIST_NOIUS = 0x1,
+};
+
+/* blacklist table, modelled on scsi_devinfo.c */
+static struct {
+ char *vendor;
+ char *model;
+ unsigned flags;
+} spi_static_device_list[] __initdata = {
+ {"HP", "Ultrium 3-SCSI", SPI_BLIST_NOIUS },
+ {"IBM", "ULTRIUM-TD3", SPI_BLIST_NOIUS },
+ {NULL, NULL, 0}
+};
+
/* Private data accessors (keep these out of the header file) */
#define spi_dv_in_progress(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_in_progress)
#define spi_dv_mutex(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_mutex)
@@ -109,8 +126,11 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd,
for(i = 0; i < DV_RETRIES; i++) {
result = scsi_execute(sdev, cmd, dir, buffer, bufflen,
sense, DV_TIMEOUT, /* retries */ 1,
- REQ_FAILFAST);
- if (result & DRIVER_SENSE) {
+ REQ_FAILFAST_DEV |
+ REQ_FAILFAST_TRANSPORT |
+ REQ_FAILFAST_DRIVER,
+ NULL);
+ if (driver_byte(result) & DRIVER_SENSE) {
struct scsi_sense_hdr sshdr_tmp;
if (!sshdr)
sshdr = &sshdr_tmp;
@@ -204,6 +224,9 @@ static int spi_device_configure(struct transport_container *tc,
{
struct scsi_device *sdev = to_scsi_device(dev);
struct scsi_target *starget = sdev->sdev_target;
+ unsigned bflags = scsi_get_device_flags_keyed(sdev, &sdev->inquiry[8],
+ &sdev->inquiry[16],
+ SCSI_DEVINFO_SPI);
/* Populate the target capability fields with the values
* gleaned from the device inquiry */
@@ -213,6 +236,10 @@ static int spi_device_configure(struct transport_container *tc,
spi_support_dt(starget) = scsi_device_dt(sdev);
spi_support_dt_only(starget) = scsi_device_dt_only(sdev);
spi_support_ius(starget) = scsi_device_ius(sdev);
+ if (bflags & SPI_BLIST_NOIUS) {
+ dev_info(dev, "Information Units disabled by blacklist\n");
+ spi_support_ius(starget) = 0;
+ }
spi_support_qas(starget) = scsi_device_qas(sdev);
return 0;
@@ -231,8 +258,10 @@ static int spi_setup_transport_attrs(struct transport_container *tc,
spi_width(starget) = 0; /* narrow */
spi_max_width(starget) = 1;
spi_iu(starget) = 0; /* no IU */
+ spi_max_iu(starget) = 1;
spi_dt(starget) = 0; /* ST */
spi_qas(starget) = 0;
+ spi_max_qas(starget) = 1;
spi_wr_flow(starget) = 0;
spi_rd_strm(starget) = 0;
spi_rti(starget) = 0;
@@ -357,9 +386,9 @@ static DEVICE_ATTR(field, S_IRUGO, \
/* The Parallel SCSI Tranport Attributes: */
spi_transport_max_attr(offset, "%d\n");
spi_transport_max_attr(width, "%d\n");
-spi_transport_rd_attr(iu, "%d\n");
+spi_transport_max_attr(iu, "%d\n");
spi_transport_rd_attr(dt, "%d\n");
-spi_transport_rd_attr(qas, "%d\n");
+spi_transport_max_attr(qas, "%d\n");
spi_transport_rd_attr(wr_flow, "%d\n");
spi_transport_rd_attr(rd_strm, "%d\n");
spi_transport_rd_attr(rti, "%d\n");
@@ -568,6 +597,28 @@ static DEVICE_ATTR(signalling, S_IRUGO,
show_spi_host_signalling,
store_spi_host_signalling);
+static ssize_t show_spi_host_width(struct device *cdev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = transport_class_to_shost(cdev);
+
+ return sprintf(buf, "%s\n", shost->max_id == 16 ? "wide" : "narrow");
+}
+static DEVICE_ATTR(host_width, S_IRUGO,
+ show_spi_host_width, NULL);
+
+static ssize_t show_spi_host_hba_id(struct device *cdev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = transport_class_to_shost(cdev);
+
+ return sprintf(buf, "%d\n", shost->this_id);
+}
+static DEVICE_ATTR(hba_id, S_IRUGO,
+ show_spi_host_hba_id, NULL);
+
#define DV_SET(x, y) \
if(i->f->set_##x) \
i->f->set_##x(sdev->sdev_target, y)
@@ -828,7 +879,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
return;
}
- if (!scsi_device_wide(sdev)) {
+ if (!spi_support_wide(starget)) {
spi_max_width(starget) = 0;
max_width = 0;
}
@@ -855,7 +906,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
return;
/* device can't handle synchronous */
- if (!scsi_device_sync(sdev) && !scsi_device_dt(sdev))
+ if (!spi_support_sync(starget) && !spi_support_dt(starget))
return;
/* len == -1 is the signal that we need to ascertain the
@@ -871,13 +922,14 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
/* try QAS requests; this should be harmless to set if the
* target supports it */
- if (scsi_device_qas(sdev)) {
+ if (spi_support_qas(starget) && spi_max_qas(starget)) {
DV_SET(qas, 1);
} else {
DV_SET(qas, 0);
}
- if (scsi_device_ius(sdev) && min_period < 9) {
+ if (spi_support_ius(starget) && spi_max_iu(starget) &&
+ min_period < 9) {
/* This u320 (or u640). Set IU transfers */
DV_SET(iu, 1);
/* Then set the optional parameters */
@@ -897,7 +949,7 @@ spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
i->f->get_signalling(shost);
if (spi_signalling(shost) == SPI_SIGNAL_SE ||
spi_signalling(shost) == SPI_SIGNAL_HVD ||
- !scsi_device_dt(sdev)) {
+ !spi_support_dt(starget)) {
DV_SET(dt, 0);
} else {
DV_SET(dt, 1);
@@ -958,10 +1010,10 @@ spi_dv_device(struct scsi_device *sdev)
u8 *buffer;
const int len = SPI_MAX_ECHO_BUFFER_SIZE*2;
- if (unlikely(scsi_device_get(sdev)))
+ if (unlikely(spi_dv_in_progress(starget)))
return;
- if (unlikely(spi_dv_in_progress(starget)))
+ if (unlikely(scsi_device_get(sdev)))
return;
spi_dv_in_progress(starget) = 1;
@@ -1350,6 +1402,8 @@ static DECLARE_ANON_TRANSPORT_CLASS(spi_device_class,
static struct attribute *host_attributes[] = {
&dev_attr_signalling.attr,
+ &dev_attr_host_width.attr,
+ &dev_attr_hba_id.attr,
NULL
};
@@ -1380,7 +1434,7 @@ static int spi_host_configure(struct transport_container *tc,
(si->f->show_##name ? S_IRUGO : 0) | \
(si->f->set_##name ? S_IWUSR : 0)
-static mode_t target_attribute_is_visible(struct kobject *kobj,
+static umode_t target_attribute_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct device *cdev = container_of(kobj, struct device, kobj);
@@ -1409,12 +1463,18 @@ static mode_t target_attribute_is_visible(struct kobject *kobj,
else if (attr == &dev_attr_iu.attr &&
spi_support_ius(starget))
return TARGET_ATTRIBUTE_HELPER(iu);
+ else if (attr == &dev_attr_max_iu.attr &&
+ spi_support_ius(starget))
+ return TARGET_ATTRIBUTE_HELPER(iu);
else if (attr == &dev_attr_dt.attr &&
spi_support_dt(starget))
return TARGET_ATTRIBUTE_HELPER(dt);
else if (attr == &dev_attr_qas.attr &&
spi_support_qas(starget))
return TARGET_ATTRIBUTE_HELPER(qas);
+ else if (attr == &dev_attr_max_qas.attr &&
+ spi_support_qas(starget))
+ return TARGET_ATTRIBUTE_HELPER(qas);
else if (attr == &dev_attr_wr_flow.attr &&
spi_support_ius(starget))
return TARGET_ATTRIBUTE_HELPER(wr_flow);
@@ -1444,8 +1504,10 @@ static struct attribute *target_attributes[] = {
&dev_attr_width.attr,
&dev_attr_max_width.attr,
&dev_attr_iu.attr,
+ &dev_attr_max_iu.attr,
&dev_attr_dt.attr,
&dev_attr_qas.attr,
+ &dev_attr_max_qas.attr,
&dev_attr_wr_flow.attr,
&dev_attr_rd_strm.attr,
&dev_attr_rti.attr,
@@ -1510,7 +1572,21 @@ EXPORT_SYMBOL(spi_release_transport);
static __init int spi_transport_init(void)
{
- int error = transport_class_register(&spi_transport_class);
+ int error = scsi_dev_info_add_list(SCSI_DEVINFO_SPI,
+ "SCSI Parallel Transport Class");
+ if (!error) {
+ int i;
+
+ for (i = 0; spi_static_device_list[i].vendor; i++)
+ scsi_dev_info_list_add_keyed(1, /* compatible */
+ spi_static_device_list[i].vendor,
+ spi_static_device_list[i].model,
+ NULL,
+ spi_static_device_list[i].flags,
+ SCSI_DEVINFO_SPI);
+ }
+
+ error = transport_class_register(&spi_transport_class);
if (error)
return error;
error = anon_transport_class_register(&spi_device_class);
@@ -1522,6 +1598,7 @@ static void __exit spi_transport_exit(void)
transport_class_unregister(&spi_transport_class);
anon_transport_class_unregister(&spi_device_class);
transport_class_unregister(&spi_host_class);
+ scsi_dev_info_remove_list(SCSI_DEVINFO_SPI);
}
MODULE_AUTHOR("Martin Hicks");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 21:05:32 +0000