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[SCSI] libsas: abstract STP task status into a function

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Break out the frame processor for STP tasks from aic94xx so they can
be shared by other SAS HBA's

Original patch from Jeff Garzik <jeff@garzik.org>

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
James Bottomley 2008-01-18 10:47:01 -06:00
parent 1292500b15
commit 366ca51f30
4 changed files with 44 additions and 19 deletions
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20
drivers/scsi/aic94xx/aic94xx_task.c
View File

@ -192,24 +192,8 @@ static void asd_get_response_tasklet(struct asd_ascb *ascb,
r + 16 + sizeof(struct ssp_frame_hdr);
ts->residual = le32_to_cpu(*(__le32 *)r);
ts->resp = SAS_TASK_COMPLETE;
if (iu->datapres == 0)
ts->stat = iu->status;
else if (iu->datapres == 1)
ts->stat = iu->resp_data[3];
else if (iu->datapres == 2) {
ts->stat = SAM_CHECK_COND;
ts->buf_valid_size = min((u32) SAS_STATUS_BUF_SIZE,
be32_to_cpu(iu->sense_data_len));
memcpy(ts->buf, iu->sense_data, ts->buf_valid_size);
if (iu->status != SAM_CHECK_COND) {
ASD_DPRINTK("device %llx sent sense data, but "
"stat(0x%x) is not CHECK_CONDITION"
"\n",
SAS_ADDR(task->dev->sas_addr),
iu->status);
}
}
sas_ssp_task_response(&asd_ha->pcidev->dev, task, iu);
} else {
struct ata_task_resp *resp = (void *) &ts->buf[0];

3
drivers/scsi/libsas/Makefile
View File

@ -33,6 +33,7 @@ libsas-y += sas_init.o \
sas_dump.o \
sas_discover.o \
sas_expander.o \
sas_scsi_host.o
sas_scsi_host.o \
sas_task.o
libsas-$(CONFIG_SCSI_SAS_ATA) += sas_ata.o
libsas-$(CONFIG_SCSI_SAS_HOST_SMP) += sas_host_smp.o

36
drivers/scsi/libsas/sas_task.c Normal file
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@ -0,0 +1,36 @@
#include <linux/kernel.h>
#include <scsi/sas.h>
#include <scsi/libsas.h>
/* fill task_status_struct based on SSP response frame */
void sas_ssp_task_response(struct device *dev, struct sas_task *task,
struct ssp_response_iu *iu)
{
struct task_status_struct *tstat = &task->task_status;
tstat->resp = SAS_TASK_COMPLETE;
if (iu->datapres == 0)
tstat->stat = iu->status;
else if (iu->datapres == 1)
tstat->stat = iu->resp_data[3];
else if (iu->datapres == 2) {
tstat->stat = SAM_CHECK_COND;
tstat->buf_valid_size =
min_t(int, SAS_STATUS_BUF_SIZE,
be32_to_cpu(iu->sense_data_len));
memcpy(tstat->buf, iu->sense_data, tstat->buf_valid_size);
if (iu->status != SAM_CHECK_COND)
dev_printk(KERN_WARNING, dev,
"dev %llx sent sense data, but "
"stat(%x) is not CHECK CONDITION\n",
SAS_ADDR(task->dev->sas_addr),
iu->status);
}
else
/* when datapres contains corrupt/unknown value... */
tstat->stat = SAM_CHECK_COND;
}
EXPORT_SYMBOL_GPL(sas_ssp_task_response);

4
include/scsi/libsas.h
View File

@ -672,4 +672,8 @@ extern int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg);
extern int sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct request *req);
extern void sas_ssp_task_response(struct device *dev, struct sas_task *task,
struct ssp_response_iu *iu);
#endif /* _SASLIB_H_ */