* 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>
#include <linux/workqueue.h>
#include <linux/blkdev.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
#include <scsi/scsi.h>
#include "scsi_priv.h"
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
-#include <scsi/scsi_request.h>
+#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>
-#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
-
-#define SPI_NUM_ATTRS 13 /* increase this if you add attributes */
+#define SPI_NUM_ATTRS 14 /* increase this if you add attributes */
#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
* on" attributes */
#define SPI_HOST_ATTRS 1
/* Private data accessors (keep these out of the header file) */
#define spi_dv_pending(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_pending)
-#define spi_dv_sem(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_sem)
+#define spi_dv_mutex(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dv_mutex)
struct spi_internal {
struct scsi_transport_template t;
return result;
}
-/* Modification of scsi_wait_req that will clear UNIT ATTENTION conditions
- * resulting from (likely) bus and device resets */
-static void spi_wait_req(struct scsi_request *sreq, const void *cmd,
- void *buffer, unsigned bufflen)
+static int spi_execute(struct scsi_device *sdev, const void *cmd,
+ enum dma_data_direction dir,
+ void *buffer, unsigned bufflen,
+ struct scsi_sense_hdr *sshdr)
{
- int i;
+ int i, result;
+ unsigned char sense[SCSI_SENSE_BUFFERSIZE];
for(i = 0; i < DV_RETRIES; i++) {
- sreq->sr_request->flags |= REQ_FAILFAST;
-
- scsi_wait_req(sreq, cmd, buffer, bufflen,
- DV_TIMEOUT, /* retries */ 1);
- if (sreq->sr_result & DRIVER_SENSE) {
- struct scsi_sense_hdr sshdr;
-
- if (scsi_request_normalize_sense(sreq, &sshdr)
- && sshdr.sense_key == UNIT_ATTENTION)
+ result = scsi_execute(sdev, cmd, dir, buffer, bufflen,
+ sense, DV_TIMEOUT, /* retries */ 1,
+ REQ_FAILFAST);
+ if (result & DRIVER_SENSE) {
+ struct scsi_sense_hdr sshdr_tmp;
+ if (!sshdr)
+ sshdr = &sshdr_tmp;
+
+ if (scsi_normalize_sense(sense, sizeof(*sense),
+ sshdr)
+ && sshdr->sense_key == UNIT_ATTENTION)
continue;
}
break;
}
+ return result;
}
static struct {
return SPI_SIGNAL_UNKNOWN;
}
-static int spi_host_setup(struct device *dev)
+static int spi_host_setup(struct transport_container *tc, struct device *dev,
+ struct class_device *cdev)
{
struct Scsi_Host *shost = dev_to_shost(dev);
return &i->t.host_attrs.ac == cont;
}
-static int spi_device_configure(struct device *dev)
+static int spi_device_configure(struct transport_container *tc,
+ struct device *dev,
+ struct class_device *cdev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct scsi_target *starget = sdev->sdev_target;
return 0;
}
-static int spi_setup_transport_attrs(struct device *dev)
+static int spi_setup_transport_attrs(struct transport_container *tc,
+ struct device *dev,
+ struct class_device *cdev)
{
struct scsi_target *starget = to_scsi_target(dev);
spi_rd_strm(starget) = 0;
spi_rti(starget) = 0;
spi_pcomp_en(starget) = 0;
+ spi_hold_mcs(starget) = 0;
spi_dv_pending(starget) = 0;
spi_initial_dv(starget) = 0;
- init_MUTEX(&spi_dv_sem(starget));
+ mutex_init(&spi_dv_mutex(starget));
return 0;
}
spi_transport_rd_attr(rd_strm, "%d\n");
spi_transport_rd_attr(rti, "%d\n");
spi_transport_rd_attr(pcomp_en, "%d\n");
+spi_transport_rd_attr(hold_mcs, "%d\n");
+
+/* we only care about the first child device so we return 1 */
+static int child_iter(struct device *dev, void *data)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ spi_dv_device(sdev);
+ return 1;
+}
static ssize_t
store_spi_revalidate(struct class_device *cdev, const char *buf, size_t count)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
- /* FIXME: we're relying on an awful lot of device internals
- * here. We really need a function to get the first available
- * child */
- struct device *dev = container_of(starget->dev.children.next, struct device, node);
- struct scsi_device *sdev = to_scsi_device(dev);
- spi_dv_device(sdev);
+ device_for_each_child(&starget->dev, NULL, child_iter);
return count;
}
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;
len = sprint_frac(buf, picosec, 1000);
}
+ return len;
+}
+
+static ssize_t
+show_spi_transport_period_helper(char *buf, int period)
+{
+ int len = period_to_str(buf, period);
buf[len++] = '\n';
buf[len] = '\0';
return len;
if (i->f->get_period)
i->f->get_period(starget);
- return show_spi_transport_period_helper(cdev, buf, tp->period);
+ return show_spi_transport_period_helper(buf, tp->period);
}
static ssize_t
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
- return show_spi_transport_period_helper(cdev, buf, tp->min_period);
+ return show_spi_transport_period_helper(buf, tp->min_period);
}
static ssize_t
/* This is for read/write Domain Validation: If the device supports
* an echo buffer, we do read/write tests to it */
static enum spi_compare_returns
-spi_dv_device_echo_buffer(struct scsi_request *sreq, u8 *buffer,
+spi_dv_device_echo_buffer(struct scsi_device *sdev, u8 *buffer,
u8 *ptr, const int retries)
{
- struct scsi_device *sdev = sreq->sr_device;
int len = ptr - buffer;
- int j, k, r;
+ int j, k, r, result;
unsigned int pattern = 0x0000ffff;
+ struct scsi_sense_hdr sshdr;
const char spi_write_buffer[] = {
WRITE_BUFFER, 0x0a, 0, 0, 0, 0, 0, len >> 8, len & 0xff, 0
}
for (r = 0; r < retries; r++) {
- sreq->sr_cmd_len = 0; /* wait_req to fill in */
- sreq->sr_data_direction = DMA_TO_DEVICE;
- spi_wait_req(sreq, spi_write_buffer, buffer, len);
- if(sreq->sr_result || !scsi_device_online(sdev)) {
- struct scsi_sense_hdr sshdr;
+ result = spi_execute(sdev, spi_write_buffer, DMA_TO_DEVICE,
+ buffer, len, &sshdr);
+ if(result || !scsi_device_online(sdev)) {
scsi_device_set_state(sdev, SDEV_QUIESCE);
- if (scsi_request_normalize_sense(sreq, &sshdr)
+ if (scsi_sense_valid(&sshdr)
&& sshdr.sense_key == ILLEGAL_REQUEST
/* INVALID FIELD IN CDB */
&& sshdr.asc == 0x24 && sshdr.ascq == 0x00)
return SPI_COMPARE_SKIP_TEST;
- SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Write Buffer failure %x\n", sreq->sr_result);
+ sdev_printk(KERN_ERR, sdev, "Write Buffer failure %x\n", result);
return SPI_COMPARE_FAILURE;
}
memset(ptr, 0, len);
- sreq->sr_cmd_len = 0; /* wait_req to fill in */
- sreq->sr_data_direction = DMA_FROM_DEVICE;
- spi_wait_req(sreq, spi_read_buffer, ptr, len);
+ spi_execute(sdev, spi_read_buffer, DMA_FROM_DEVICE,
+ ptr, len, NULL);
scsi_device_set_state(sdev, SDEV_QUIESCE);
if (memcmp(buffer, ptr, len) != 0)
/* This is for the simplest form of Domain Validation: a read test
* on the inquiry data from the device */
static enum spi_compare_returns
-spi_dv_device_compare_inquiry(struct scsi_request *sreq, u8 *buffer,
+spi_dv_device_compare_inquiry(struct scsi_device *sdev, u8 *buffer,
u8 *ptr, const int retries)
{
- int r;
- const int len = sreq->sr_device->inquiry_len;
- struct scsi_device *sdev = sreq->sr_device;
+ int r, result;
+ const int len = sdev->inquiry_len;
const char spi_inquiry[] = {
INQUIRY, 0, 0, 0, len, 0
};
for (r = 0; r < retries; r++) {
- sreq->sr_cmd_len = 0; /* wait_req to fill in */
- sreq->sr_data_direction = DMA_FROM_DEVICE;
-
memset(ptr, 0, len);
- spi_wait_req(sreq, spi_inquiry, ptr, len);
+ result = spi_execute(sdev, spi_inquiry, DMA_FROM_DEVICE,
+ ptr, len, NULL);
- if(sreq->sr_result || !scsi_device_online(sdev)) {
+ if(result || !scsi_device_online(sdev)) {
scsi_device_set_state(sdev, SDEV_QUIESCE);
return SPI_COMPARE_FAILURE;
}
}
static enum spi_compare_returns
-spi_dv_retrain(struct scsi_request *sreq, u8 *buffer, u8 *ptr,
+spi_dv_retrain(struct scsi_device *sdev, u8 *buffer, u8 *ptr,
enum spi_compare_returns
- (*compare_fn)(struct scsi_request *, u8 *, u8 *, int))
+ (*compare_fn)(struct scsi_device *, u8 *, u8 *, int))
{
- struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
- struct scsi_device *sdev = sreq->sr_device;
+ struct spi_internal *i = to_spi_internal(sdev->host->transportt);
+ struct scsi_target *starget = sdev->sdev_target;
int period = 0, prevperiod = 0;
enum spi_compare_returns retval;
for (;;) {
int newperiod;
- retval = compare_fn(sreq, buffer, ptr, DV_LOOPS);
+ retval = compare_fn(sdev, buffer, ptr, DV_LOOPS);
if (retval == SPI_COMPARE_SUCCESS
|| retval == SPI_COMPARE_SKIP_TEST)
break;
/* OK, retrain, fallback */
+ if (i->f->get_iu)
+ i->f->get_iu(starget);
+ if (i->f->get_qas)
+ i->f->get_qas(starget);
if (i->f->get_period)
i->f->get_period(sdev->sdev_target);
- newperiod = spi_period(sdev->sdev_target);
- period = newperiod > period ? newperiod : period;
- if (period < 0x0d)
- period++;
- else
- period += period >> 1;
- if (unlikely(period > 0xff || period == prevperiod)) {
- /* Total failure; set to async and return */
- SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Domain Validation Failure, dropping back to Asynchronous\n");
- DV_SET(offset, 0);
- return SPI_COMPARE_FAILURE;
+ /* Here's the fallback sequence; first try turning off
+ * IU, then QAS (if we can control them), then finally
+ * fall down the periods */
+ if (i->f->set_iu && spi_iu(starget)) {
+ starget_printk(KERN_ERR, starget, "Domain Validation Disabing Information Units\n");
+ DV_SET(iu, 0);
+ } else if (i->f->set_qas && spi_qas(starget)) {
+ starget_printk(KERN_ERR, starget, "Domain Validation Disabing Quick Arbitration and Selection\n");
+ DV_SET(qas, 0);
+ } else {
+ newperiod = spi_period(starget);
+ period = newperiod > period ? newperiod : period;
+ if (period < 0x0d)
+ period++;
+ else
+ period += period >> 1;
+
+ if (unlikely(period > 0xff || period == prevperiod)) {
+ /* Total failure; set to async and return */
+ starget_printk(KERN_ERR, starget, "Domain Validation Failure, dropping back to Asynchronous\n");
+ DV_SET(offset, 0);
+ return SPI_COMPARE_FAILURE;
+ }
+ starget_printk(KERN_ERR, starget, "Domain Validation detected failure, dropping back\n");
+ DV_SET(period, period);
+ prevperiod = period;
}
- SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Domain Validation detected failure, dropping back\n");
- DV_SET(period, period);
- prevperiod = period;
}
return retval;
}
static int
-spi_dv_device_get_echo_buffer(struct scsi_request *sreq, u8 *buffer)
+spi_dv_device_get_echo_buffer(struct scsi_device *sdev, u8 *buffer)
{
- int l;
+ int l, result;
/* first off do a test unit ready. This can error out
* because of reservations or some other reason. If it
};
- sreq->sr_cmd_len = 0;
- sreq->sr_data_direction = DMA_NONE;
-
/* We send a set of three TURs to clear any outstanding
* unit attention conditions if they exist (Otherwise the
* buffer tests won't be happy). If the TUR still fails
* (reservation conflict, device not ready, etc) just
* skip the write tests */
for (l = 0; ; l++) {
- spi_wait_req(sreq, spi_test_unit_ready, NULL, 0);
+ result = spi_execute(sdev, spi_test_unit_ready, DMA_NONE,
+ NULL, 0, NULL);
- if(sreq->sr_result) {
+ if(result) {
if(l >= 3)
return 0;
} else {
}
}
- sreq->sr_cmd_len = 0;
- sreq->sr_data_direction = DMA_FROM_DEVICE;
-
- spi_wait_req(sreq, spi_read_buffer_descriptor, buffer, 4);
+ result = spi_execute(sdev, spi_read_buffer_descriptor,
+ DMA_FROM_DEVICE, buffer, 4, NULL);
- if (sreq->sr_result)
+ if (result)
/* Device has no echo buffer */
return 0;
}
static void
-spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
+spi_dv_device_internal(struct scsi_device *sdev, u8 *buffer)
{
- struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
- struct scsi_device *sdev = sreq->sr_device;
+ struct spi_internal *i = to_spi_internal(sdev->host->transportt);
struct scsi_target *starget = sdev->sdev_target;
int len = sdev->inquiry_len;
/* first set us up for narrow async */
DV_SET(offset, 0);
DV_SET(width, 0);
- if (spi_dv_device_compare_inquiry(sreq, buffer, buffer, DV_LOOPS)
+ if (spi_dv_device_compare_inquiry(sdev, buffer, buffer, DV_LOOPS)
!= SPI_COMPARE_SUCCESS) {
- SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Domain Validation Initial Inquiry Failed\n");
+ starget_printk(KERN_ERR, starget, "Domain Validation Initial Inquiry Failed\n");
/* FIXME: should probably offline the device here? */
return;
}
/* test width */
- if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
- i->f->set_width(sdev->sdev_target, 1);
-
- printk("WIDTH IS %d\n", spi_max_width(starget));
+ if (i->f->set_width && spi_max_width(starget) &&
+ scsi_device_wide(sdev)) {
+ i->f->set_width(starget, 1);
- if (spi_dv_device_compare_inquiry(sreq, buffer,
+ if (spi_dv_device_compare_inquiry(sdev, buffer,
buffer + len,
DV_LOOPS)
!= SPI_COMPARE_SUCCESS) {
- SPI_PRINTK(sdev->sdev_target, KERN_ERR, "Wide Transfers Fail\n");
- i->f->set_width(sdev->sdev_target, 0);
+ starget_printk(KERN_ERR, starget, "Wide Transfers Fail\n");
+ i->f->set_width(starget, 0);
}
}
return;
/* device can't handle synchronous */
- if(!sdev->ppr && !sdev->sdtr)
+ if (!scsi_device_sync(sdev) && !scsi_device_dt(sdev))
return;
- /* see if the device has an echo buffer. If it does we can
- * do the SPI pattern write tests */
-
- len = 0;
- if (sdev->ppr)
- len = spi_dv_device_get_echo_buffer(sreq, buffer);
+ /* len == -1 is the signal that we need to ascertain the
+ * presence of an echo buffer before trying to use it. len ==
+ * 0 means we don't have an echo buffer */
+ len = -1;
retry:
/* now set up to the maximum */
DV_SET(offset, spi_max_offset(starget));
DV_SET(period, spi_min_period(starget));
-
- if (len == 0) {
- SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
- spi_dv_retrain(sreq, buffer, buffer + len,
- spi_dv_device_compare_inquiry);
+ /* try QAS requests; this should be harmless to set if the
+ * target supports it */
+ if (scsi_device_qas(sdev))
+ DV_SET(qas, 1);
+ /* Also try IU transfers */
+ if (scsi_device_ius(sdev))
+ DV_SET(iu, 1);
+ if (spi_min_period(starget) < 9) {
+ /* This u320 (or u640). Ignore the coupled parameters
+ * like DT and IU, but set the optional ones */
+ DV_SET(rd_strm, 1);
+ DV_SET(wr_flow, 1);
+ DV_SET(rti, 1);
+ if (spi_min_period(starget) == 8)
+ DV_SET(pcomp_en, 1);
+ }
+ /* Do the read only INQUIRY tests */
+ spi_dv_retrain(sdev, buffer, buffer + sdev->inquiry_len,
+ spi_dv_device_compare_inquiry);
+ /* See if we actually managed to negotiate and sustain DT */
+ if (i->f->get_dt)
+ i->f->get_dt(starget);
+
+ /* see if the device has an echo buffer. If it does we can do
+ * the SPI pattern write tests. Because of some broken
+ * devices, we *only* try this on a device that has actually
+ * negotiated DT */
+
+ if (len == -1 && spi_dt(starget))
+ len = spi_dv_device_get_echo_buffer(sdev, buffer);
+
+ if (len <= 0) {
+ starget_printk(KERN_INFO, starget, "Domain Validation skipping write tests\n");
return;
}
if (len > SPI_MAX_ECHO_BUFFER_SIZE) {
- SPI_PRINTK(sdev->sdev_target, KERN_WARNING, "Echo buffer size %d is too big, trimming to %d\n", len, SPI_MAX_ECHO_BUFFER_SIZE);
+ starget_printk(KERN_WARNING, starget, "Echo buffer size %d is too big, trimming to %d\n", len, SPI_MAX_ECHO_BUFFER_SIZE);
len = SPI_MAX_ECHO_BUFFER_SIZE;
}
- if (spi_dv_retrain(sreq, buffer, buffer + len,
+ if (spi_dv_retrain(sdev, buffer, buffer + len,
spi_dv_device_echo_buffer)
== SPI_COMPARE_SKIP_TEST) {
/* OK, the stupid drive can't do a write echo buffer
void
spi_dv_device(struct scsi_device *sdev)
{
- struct scsi_request *sreq = scsi_allocate_request(sdev, GFP_KERNEL);
struct scsi_target *starget = sdev->sdev_target;
u8 *buffer;
const int len = SPI_MAX_ECHO_BUFFER_SIZE*2;
- if (unlikely(!sreq))
- return;
-
if (unlikely(scsi_device_get(sdev)))
- goto out_free_req;
+ return;
- buffer = kmalloc(len, GFP_KERNEL);
+ buffer = kzalloc(len, GFP_KERNEL);
if (unlikely(!buffer))
goto out_put;
- memset(buffer, 0, len);
-
/* We need to verify that the actual device will quiesce; the
* later target quiesce is just a nice to have */
if (unlikely(scsi_device_quiesce(sdev)))
scsi_target_quiesce(starget);
spi_dv_pending(starget) = 1;
- down(&spi_dv_sem(starget));
+ mutex_lock(&spi_dv_mutex(starget));
- SPI_PRINTK(starget, KERN_INFO, "Beginning Domain Validation\n");
+ starget_printk(KERN_INFO, starget, "Beginning Domain Validation\n");
- spi_dv_device_internal(sreq, buffer);
+ spi_dv_device_internal(sdev, buffer);
- SPI_PRINTK(starget, KERN_INFO, "Ending Domain Validation\n");
+ starget_printk(KERN_INFO, starget, "Ending Domain Validation\n");
- up(&spi_dv_sem(starget));
+ mutex_unlock(&spi_dv_mutex(starget));
spi_dv_pending(starget) = 0;
scsi_target_resume(starget);
kfree(buffer);
out_put:
scsi_device_put(sdev);
- out_free_req:
- scsi_release_request(sreq);
}
EXPORT_SYMBOL(spi_dv_device);
sprint_frac(tmp, picosec, 1000);
dev_info(&starget->dev,
- "%s %sSCSI %d.%d MB/s %s%s%s (%s ns, offset %d)\n",
- scsi, tp->width ? "WIDE " : "", kb100/10, kb100 % 10,
- tp->dt ? "DT" : "ST", tp->iu ? " IU" : "",
- tp->qas ? " QAS" : "", tmp, tp->offset);
+ "%s %sSCSI %d.%d MB/s %s%s%s%s%s%s%s%s (%s ns, offset %d)\n",
+ scsi, tp->width ? "WIDE " : "", kb100/10, kb100 % 10,
+ tp->dt ? "DT" : "ST",
+ tp->iu ? " IU" : "",
+ tp->qas ? " QAS" : "",
+ tp->rd_strm ? " RDSTRM" : "",
+ tp->rti ? " RTI" : "",
+ tp->wr_flow ? " WRFLOW" : "",
+ tp->pcomp_en ? " PCOMP" : "",
+ 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);
+int spi_populate_width_msg(unsigned char *msg, int width)
+{
+ msg[0] = EXTENDED_MESSAGE;
+ msg[1] = 2;
+ msg[2] = EXTENDED_WDTR;
+ msg[3] = width;
+ return 4;
+}
+EXPORT_SYMBOL_GPL(spi_populate_width_msg);
+
+int spi_populate_sync_msg(unsigned char *msg, int period, int offset)
+{
+ msg[0] = EXTENDED_MESSAGE;
+ msg[1] = 3;
+ msg[2] = EXTENDED_SDTR;
+ msg[3] = period;
+ msg[4] = offset;
+ return 5;
+}
+EXPORT_SYMBOL_GPL(spi_populate_sync_msg);
+
+int spi_populate_ppr_msg(unsigned char *msg, int period, int offset,
+ int width, int options)
+{
+ msg[0] = EXTENDED_MESSAGE;
+ msg[1] = 6;
+ msg[2] = EXTENDED_PPR;
+ msg[3] = period;
+ msg[4] = 0;
+ msg[5] = offset;
+ msg[6] = width;
+ msg[7] = options;
+ return 8;
+}
+EXPORT_SYMBOL_GPL(spi_populate_ppr_msg);
+
+#ifdef CONFIG_SCSI_CONSTANTS
+static const char * const one_byte_msgs[] = {
+/* 0x00 */ "Task Complete", NULL /* Extended Message */, "Save Pointers",
+/* 0x03 */ "Restore Pointers", "Disconnect", "Initiator Error",
+/* 0x06 */ "Abort Task Set", "Message Reject", "Nop", "Message Parity Error",
+/* 0x0a */ "Linked Command Complete", "Linked Command Complete w/flag",
+/* 0x0c */ "Target Reset", "Abort Task", "Clear Task Set",
+/* 0x0f */ "Initiate Recovery", "Release Recovery",
+/* 0x11 */ "Terminate Process", "Continue Task", "Target Transfer Disable",
+/* 0x14 */ NULL, NULL, "Clear ACA", "LUN Reset"
+};
+
+static const char * const two_byte_msgs[] = {
+/* 0x20 */ "Simple Queue Tag", "Head of Queue Tag", "Ordered Queue Tag",
+/* 0x23 */ "Ignore Wide Residue", "ACA"
+};
+
+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", "Modify Bidirectional Data Pointer"
+};
+
+static 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]);
+}
+
+static void print_ptr(const unsigned char *msg, int msb, const char *desc)
+{
+ int ptr = (msg[msb] << 24) | (msg[msb+1] << 16) | (msg[msb+2] << 8) |
+ msg[msb+3];
+ printk("%s = %d ", desc, ptr);
+}
+
+int spi_print_msg(const unsigned char *msg)
+{
+ int len = 1, i;
+ if (msg[0] == EXTENDED_MESSAGE) {
+ len = 2 + msg[1];
+ if (len == 2)
+ len += 256;
+ 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:
+ print_ptr(msg, 3, "pointer");
+ 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;
+ case EXTENDED_MODIFY_BIDI_DATA_PTR:
+ print_ptr(msg, 3, "out");
+ print_ptr(msg, 7, "in");
+ 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);
+ /* Normal One byte */
+ } else if (msg[0] < 0x1f) {
+ if (msg[0] < ARRAY_SIZE(one_byte_msgs) && one_byte_msgs[msg[0]])
+ printk("%s ", one_byte_msgs[msg[0]]);
+ else
+ printk("reserved (%02x) ", msg[0]);
+ } else if (msg[0] == 0x55) {
+ printk("QAS Request ");
+ /* 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 = 1, i;
+
+ if (msg[0] == EXTENDED_MESSAGE) {
+ len = 2 + msg[1];
+ if (len == 2)
+ len += 256;
+ for (i = 0; i < len; ++i)
+ printk("%02x ", msg[i]);
+ /* Identify */
+ } else if (msg[0] & 0x80) {
+ printk("%02x ", msg[0]);
+ /* Normal One byte */
+ } else if ((msg[0] < 0x1f) || (msg[0] == 0x55)) {
+ printk("%02x ", msg[0]);
+ /* 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) { \
{
struct scsi_device *sdev;
struct Scsi_Host *shost;
+ struct spi_internal *i;
if (!scsi_is_sdev_device(dev))
return 0;
/* Note: this class has no device attributes, so it has
* no per-HBA allocation and thus we don't need to distinguish
* the attribute containers for the device */
+ i = to_spi_internal(shost->transportt);
+ if (i->f->deny_binding && i->f->deny_binding(sdev->sdev_target))
+ return 0;
return 1;
}
struct device *dev)
{
struct Scsi_Host *shost;
+ struct scsi_target *starget;
struct spi_internal *i;
if (!scsi_is_target_device(dev))
return 0;
i = to_spi_internal(shost->transportt);
-
+ starget = to_scsi_target(dev);
+
+ if (i->f->deny_binding && i->f->deny_binding(starget))
+ return 0;
+
return &i->t.target_attrs.ac == cont;
}
struct scsi_transport_template *
spi_attach_transport(struct spi_function_template *ft)
{
- struct spi_internal *i = kmalloc(sizeof(struct spi_internal),
- GFP_KERNEL);
int count = 0;
+ struct spi_internal *i = kzalloc(sizeof(struct spi_internal),
+ GFP_KERNEL);
+
if (unlikely(!i))
return NULL;
- memset(i, 0, sizeof(struct spi_internal));
-
-
i->t.target_attrs.ac.class = &spi_transport_class.class;
i->t.target_attrs.ac.attrs = &i->attrs[0];
i->t.target_attrs.ac.match = spi_target_match;
SETUP_ATTRIBUTE(rd_strm);
SETUP_ATTRIBUTE(rti);
SETUP_ATTRIBUTE(pcomp_en);
+ SETUP_ATTRIBUTE(hold_mcs);
/* if you add an attribute but forget to increase SPI_NUM_ATTRS
* this bug will trigger */
git://git.onelab.eu / linux-2.6.git / blobdiff