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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.c136
1 files changed, 132 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index 38a53b5f9e9a..46da6fe10ad5 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -18,6 +18,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#include <linux/config.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -378,9 +379,7 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
/* Translate the period into ns according to the current spec
* for SDTR/PPR messages */
-static ssize_t
-show_spi_transport_period_helper(struct class_device *cdev, char *buf,
- int period)
+static int period_to_str(char *buf, int period)
{
int len, picosec;
@@ -398,6 +397,14 @@ show_spi_transport_period_helper(struct class_device *cdev, char *buf,
len = sprint_frac(buf, picosec, 1000);
}
+ return len;
+}
+
+static ssize_t
+show_spi_transport_period_helper(struct class_device *cdev, char *buf,
+ int period)
+{
+ int len = period_to_str(buf, period);
buf[len++] = '\n';
buf[len] = '\0';
return len;
@@ -1041,12 +1048,133 @@ void spi_display_xfer_agreement(struct scsi_target *starget)
tp->hold_mcs ? " HMCS" : "",
tmp, tp->offset);
} else {
- dev_info(&starget->dev, "%sasynchronous.\n",
+ dev_info(&starget->dev, "%sasynchronous\n",
tp->width ? "wide " : "");
}
}
EXPORT_SYMBOL(spi_display_xfer_agreement);
+#ifdef CONFIG_SCSI_CONSTANTS
+static const char * const one_byte_msgs[] = {
+/* 0x00 */ "Command Complete", NULL, "Save Pointers",
+/* 0x03 */ "Restore Pointers", "Disconnect", "Initiator Error",
+/* 0x06 */ "Abort", "Message Reject", "Nop", "Message Parity Error",
+/* 0x0a */ "Linked Command Complete", "Linked Command Complete w/flag",
+/* 0x0c */ "Bus device reset", "Abort Tag", "Clear Queue",
+/* 0x0f */ "Initiate Recovery", "Release Recovery"
+};
+
+static const char * const two_byte_msgs[] = {
+/* 0x20 */ "Simple Queue Tag", "Head of Queue Tag", "Ordered Queue Tag",
+/* 0x23 */ "Ignore Wide Residue"
+};
+
+static const char * const extended_msgs[] = {
+/* 0x00 */ "Modify Data Pointer", "Synchronous Data Transfer Request",
+/* 0x02 */ "SCSI-I Extended Identify", "Wide Data Transfer Request",
+/* 0x04 */ "Parallel Protocol Request"
+};
+
+void print_nego(const unsigned char *msg, int per, int off, int width)
+{
+ if (per) {
+ char buf[20];
+ period_to_str(buf, msg[per]);
+ printk("period = %s ns ", buf);
+ }
+
+ if (off)
+ printk("offset = %d ", msg[off]);
+ if (width)
+ printk("width = %d ", 8 << msg[width]);
+}
+
+int spi_print_msg(const unsigned char *msg)
+{
+ int len = 0, i;
+ if (msg[0] == EXTENDED_MESSAGE) {
+ len = 3 + msg[1];
+ if (msg[2] < ARRAY_SIZE(extended_msgs))
+ printk ("%s ", extended_msgs[msg[2]]);
+ else
+ printk ("Extended Message, reserved code (0x%02x) ",
+ (int) msg[2]);
+ switch (msg[2]) {
+ case EXTENDED_MODIFY_DATA_POINTER:
+ printk("pointer = %d", (int) (msg[3] << 24) |
+ (msg[4] << 16) | (msg[5] << 8) | msg[6]);
+ break;
+ case EXTENDED_SDTR:
+ print_nego(msg, 3, 4, 0);
+ break;
+ case EXTENDED_WDTR:
+ print_nego(msg, 0, 0, 3);
+ break;
+ case EXTENDED_PPR:
+ print_nego(msg, 3, 5, 6);
+ break;
+ default:
+ for (i = 2; i < len; ++i)
+ printk("%02x ", msg[i]);
+ }
+ /* Identify */
+ } else if (msg[0] & 0x80) {
+ printk("Identify disconnect %sallowed %s %d ",
+ (msg[0] & 0x40) ? "" : "not ",
+ (msg[0] & 0x20) ? "target routine" : "lun",
+ msg[0] & 0x7);
+ len = 1;
+ /* Normal One byte */
+ } else if (msg[0] < 0x1f) {
+ if (msg[0] < ARRAY_SIZE(one_byte_msgs))
+ printk(one_byte_msgs[msg[0]]);
+ else
+ printk("reserved (%02x) ", msg[0]);
+ len = 1;
+ /* Two byte */
+ } else if (msg[0] <= 0x2f) {
+ if ((msg[0] - 0x20) < ARRAY_SIZE(two_byte_msgs))
+ printk("%s %02x ", two_byte_msgs[msg[0] - 0x20],
+ msg[1]);
+ else
+ printk("reserved two byte (%02x %02x) ",
+ msg[0], msg[1]);
+ len = 2;
+ } else
+ printk("reserved");
+ return len;
+}
+EXPORT_SYMBOL(spi_print_msg);
+
+#else /* ifndef CONFIG_SCSI_CONSTANTS */
+
+int spi_print_msg(const unsigned char *msg)
+{
+ int len = 0, i;
+
+ if (msg[0] == EXTENDED_MESSAGE) {
+ len = 3 + msg[1];
+ for (i = 0; i < len; ++i)
+ printk("%02x ", msg[i]);
+ /* Identify */
+ } else if (msg[0] & 0x80) {
+ printk("%02x ", msg[0]);
+ len = 1;
+ /* Normal One byte */
+ } else if (msg[0] < 0x1f) {
+ printk("%02x ", msg[0]);
+ len = 1;
+ /* Two byte */
+ } else if (msg[0] <= 0x2f) {
+ printk("%02x %02x", msg[0], msg[1]);
+ len = 2;
+ } else
+ printk("%02x ", msg[0]);
+ return len;
+}
+EXPORT_SYMBOL(spi_print_msg);
+#endif /* ! CONFIG_SCSI_CONSTANTS */
+
#define SETUP_ATTRIBUTE(field) \
i->private_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##field) { \