@@ -19165,7 +19165,7 @@ S: Maintained
F: drivers/infiniband/hw/vmw_pvrdma/
VMware PVSCSI driver
-M: Jim Gill <jgill@vmware.com>
+M: Vishal Bhakta <vbhakta@vmware.com>
M: VMware PV-Drivers <pv-drivers@vmware.com>
L: linux-scsi@vger.kernel.org
S: Maintained
@@ -21,6 +21,7 @@
#include <linux/bsg-lib.h>
#include <asm/firmware.h>
#include <asm/irq.h>
+#include <asm/rtas.h>
#include <asm/vio.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@@ -158,6 +159,9 @@ static void ibmvfc_npiv_logout(struct ibmvfc_host *);
static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *);
static void ibmvfc_tgt_move_login(struct ibmvfc_target *);
+static void ibmvfc_release_sub_crqs(struct ibmvfc_host *);
+static void ibmvfc_init_sub_crqs(struct ibmvfc_host *);
+
static const char *unknown_error = "unknown error";
static long h_reg_sub_crq(unsigned long unit_address, unsigned long ioba,
@@ -899,6 +903,9 @@ static int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost)
{
int rc = 0;
struct vio_dev *vdev = to_vio_dev(vhost->dev);
+ unsigned long flags;
+
+ ibmvfc_release_sub_crqs(vhost);
/* Re-enable the CRQ */
do {
@@ -910,6 +917,15 @@ static int ibmvfc_reenable_crq_queue(struct ibmvfc_host *vhost)
if (rc)
dev_err(vhost->dev, "Error enabling adapter (rc=%d)\n", rc);
+ spin_lock_irqsave(vhost->host->host_lock, flags);
+ spin_lock(vhost->crq.q_lock);
+ vhost->do_enquiry = 1;
+ vhost->using_channels = 0;
+ spin_unlock(vhost->crq.q_lock);
+ spin_unlock_irqrestore(vhost->host->host_lock, flags);
+
+ ibmvfc_init_sub_crqs(vhost);
+
return rc;
}
@@ -926,8 +942,8 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
unsigned long flags;
struct vio_dev *vdev = to_vio_dev(vhost->dev);
struct ibmvfc_queue *crq = &vhost->crq;
- struct ibmvfc_queue *scrq;
- int i;
+
+ ibmvfc_release_sub_crqs(vhost);
/* Close the CRQ */
do {
@@ -947,16 +963,6 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
memset(crq->msgs.crq, 0, PAGE_SIZE);
crq->cur = 0;
- if (vhost->scsi_scrqs.scrqs) {
- for (i = 0; i < nr_scsi_hw_queues; i++) {
- scrq = &vhost->scsi_scrqs.scrqs[i];
- spin_lock(scrq->q_lock);
- memset(scrq->msgs.scrq, 0, PAGE_SIZE);
- scrq->cur = 0;
- spin_unlock(scrq->q_lock);
- }
- }
-
/* And re-open it again */
rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
crq->msg_token, PAGE_SIZE);
@@ -966,9 +972,12 @@ static int ibmvfc_reset_crq(struct ibmvfc_host *vhost)
dev_warn(vhost->dev, "Partner adapter not ready\n");
else if (rc != 0)
dev_warn(vhost->dev, "Couldn't register crq (rc=%d)\n", rc);
+
spin_unlock(vhost->crq.q_lock);
spin_unlock_irqrestore(vhost->host->host_lock, flags);
+ ibmvfc_init_sub_crqs(vhost);
+
return rc;
}
@@ -5642,7 +5651,8 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
rc = h_reg_sub_crq(vdev->unit_address, scrq->msg_token, PAGE_SIZE,
&scrq->cookie, &scrq->hw_irq);
- if (rc) {
+ /* H_CLOSED indicates successful register, but no CRQ partner */
+ if (rc && rc != H_CLOSED) {
dev_warn(dev, "Error registering sub-crq: %d\n", rc);
if (rc == H_PARAMETER)
dev_warn_once(dev, "Firmware may not support MQ\n");
@@ -5675,8 +5685,8 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
irq_failed:
do {
- plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
- } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
+ rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
+ } while (rtas_busy_delay(rc));
reg_failed:
ibmvfc_free_queue(vhost, scrq);
LEAVE;
@@ -5694,6 +5704,7 @@ static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
free_irq(scrq->irq, scrq);
irq_dispose_mapping(scrq->irq);
+ scrq->irq = 0;
do {
rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address,
@@ -5707,17 +5718,21 @@ static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
LEAVE;
}
-static int ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
+static void ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
{
int i, j;
ENTER;
+ if (!vhost->mq_enabled)
+ return;
vhost->scsi_scrqs.scrqs = kcalloc(nr_scsi_hw_queues,
sizeof(*vhost->scsi_scrqs.scrqs),
GFP_KERNEL);
- if (!vhost->scsi_scrqs.scrqs)
- return -1;
+ if (!vhost->scsi_scrqs.scrqs) {
+ vhost->do_enquiry = 0;
+ return;
+ }
for (i = 0; i < nr_scsi_hw_queues; i++) {
if (ibmvfc_register_scsi_channel(vhost, i)) {
@@ -5726,13 +5741,12 @@ static int ibmvfc_init_sub_crqs(struct ibmvfc_host *vhost)
kfree(vhost->scsi_scrqs.scrqs);
vhost->scsi_scrqs.scrqs = NULL;
vhost->scsi_scrqs.active_queues = 0;
- LEAVE;
- return -1;
+ vhost->do_enquiry = 0;
+ break;
}
}
LEAVE;
- return 0;
}
static void ibmvfc_release_sub_crqs(struct ibmvfc_host *vhost)
@@ -5999,11 +6013,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
goto remove_shost;
}
- if (vhost->mq_enabled) {
- rc = ibmvfc_init_sub_crqs(vhost);
- if (rc)
- dev_warn(dev, "Failed to allocate Sub-CRQs. rc=%d\n", rc);
- }
+ ibmvfc_init_sub_crqs(vhost);
if (shost_to_fc_host(shost)->rqst_q)
blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1);
@@ -253,12 +253,17 @@ static int ufs_qcom_host_reset(struct ufs_hba *hba)
{
int ret = 0;
struct ufs_qcom_host *host = ufshcd_get_variant(hba);
+ bool reenable_intr = false;
if (!host->core_reset) {
dev_warn(hba->dev, "%s: reset control not set\n", __func__);
goto out;
}
+ reenable_intr = hba->is_irq_enabled;
+ disable_irq(hba->irq);
+ hba->is_irq_enabled = false;
+
ret = reset_control_assert(host->core_reset);
if (ret) {
dev_err(hba->dev, "%s: core_reset assert failed, err = %d\n",
@@ -280,6 +285,11 @@ static int ufs_qcom_host_reset(struct ufs_hba *hba)
usleep_range(1000, 1100);
+ if (reenable_intr) {
+ enable_irq(hba->irq);
+ hba->is_irq_enabled = true;
+ }
+
out:
return ret;
}
@@ -95,8 +95,6 @@
16, 4, buf, __len, false); \
} while (0)
-static bool early_suspend;
-
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
const char *prefix)
{
@@ -1535,7 +1533,7 @@ static ssize_t ufshcd_clkscale_enable_show(struct device *dev,
{
struct ufs_hba *hba = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%d\n", hba->clk_scaling.is_enabled);
+ return sysfs_emit(buf, "%d\n", hba->clk_scaling.is_enabled);
}
static ssize_t ufshcd_clkscale_enable_store(struct device *dev,
@@ -4987,6 +4985,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
* UFS device needs urgent BKOPs.
*/
if (!hba->pm_op_in_progress &&
+ !ufshcd_eh_in_progress(hba) &&
ufshcd_is_exception_event(lrbp->ucd_rsp_ptr) &&
schedule_work(&hba->eeh_work)) {
/*
@@ -5784,13 +5783,20 @@ static void ufshcd_err_handling_prepare(struct ufs_hba *hba)
ufshcd_suspend_clkscaling(hba);
ufshcd_clk_scaling_allow(hba, false);
}
+ ufshcd_scsi_block_requests(hba);
+ /* Drain ufshcd_queuecommand() */
+ down_write(&hba->clk_scaling_lock);
+ up_write(&hba->clk_scaling_lock);
+ cancel_work_sync(&hba->eeh_work);
}
static void ufshcd_err_handling_unprepare(struct ufs_hba *hba)
{
+ ufshcd_scsi_unblock_requests(hba);
ufshcd_release(hba);
if (ufshcd_is_clkscaling_supported(hba))
ufshcd_clk_scaling_suspend(hba, false);
+ ufshcd_clear_ua_wluns(hba);
pm_runtime_put(hba->dev);
}
@@ -5882,8 +5888,8 @@ static void ufshcd_err_handler(struct work_struct *work)
spin_unlock_irqrestore(hba->host->host_lock, flags);
ufshcd_err_handling_prepare(hba);
spin_lock_irqsave(hba->host->host_lock, flags);
- ufshcd_scsi_block_requests(hba);
- hba->ufshcd_state = UFSHCD_STATE_RESET;
+ if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
+ hba->ufshcd_state = UFSHCD_STATE_RESET;
/* Complete requests that have door-bell cleared by h/w */
ufshcd_complete_requests(hba);
@@ -6042,12 +6048,8 @@ static void ufshcd_err_handler(struct work_struct *work)
}
ufshcd_clear_eh_in_progress(hba);
spin_unlock_irqrestore(hba->host->host_lock, flags);
- ufshcd_scsi_unblock_requests(hba);
ufshcd_err_handling_unprepare(hba);
up(&hba->host_sem);
-
- if (!err && needs_reset)
- ufshcd_clear_ua_wluns(hba);
}
/**
@@ -7858,6 +7860,8 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
unsigned long flags;
ktime_t start = ktime_get();
+ hba->ufshcd_state = UFSHCD_STATE_RESET;
+
ret = ufshcd_link_startup(hba);
if (ret)
goto out;
@@ -8972,11 +8976,6 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
- if (!hba) {
- early_suspend = true;
- return 0;
- }
-
down(&hba->host_sem);
if (!hba->is_powered)
@@ -9028,14 +9027,6 @@ int ufshcd_system_resume(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
- if (!hba)
- return -EINVAL;
-
- if (unlikely(early_suspend)) {
- early_suspend = false;
- down(&hba->host_sem);
- }
-
if (!hba->is_powered || pm_runtime_suspended(hba->dev))
/*
* Let the runtime resume take care of resuming
@@ -9068,9 +9059,6 @@ int ufshcd_runtime_suspend(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
- if (!hba)
- return -EINVAL;
-
if (!hba->is_powered)
goto out;
else
@@ -9109,9 +9097,6 @@ int ufshcd_runtime_resume(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
- if (!hba)
- return -EINVAL;
-
if (!hba->is_powered)
goto out;
else
@@ -17,8 +17,6 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
- * Maintained by: Jim Gill <jgill@vmware.com>
- *
*/
#include <linux/kernel.h>
@@ -17,8 +17,6 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
- * Maintained by: Jim Gill <jgill@vmware.com>
- *
*/
#ifndef _VMW_PVSCSI_H_
10 updates, a non code maintainer update for vmw_pvscsi, five code updates for ibmvfc and four for UFS. All updates are either trivial patches or bug fixes. The patch is available here: git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes The short changelog is: Can Guo (2): scsi: ufs: Remove redundant checks of !hba in suspend/resume callbacks scsi: ufs: Minor adjustments to error handling Jiapeng Chong (1): scsi: ufs: Convert sysfs sprintf/snprintf family to sysfs_emit Nitin Rawat (1): scsi: ufs: ufs-qcom: Disable interrupt in reset path Tyrel Datwyler (5): scsi: ibmvfc: Reinitialize sub-CRQs and perform channel enquiry after LPM scsi: ibmvfc: Store return code of H_FREE_SUB_CRQ during cleanup scsi: ibmvfc: Treat H_CLOSED as success during sub-CRQ registration scsi: ibmvfc: Fix invalid sub-CRQ handles after hard reset scsi: ibmvfc: Simplify handling of sub-CRQ initialization Vishal Bhakta (1): scsi: vmw_pvscsi: MAINTAINERS: Update maintainer And the diffstat: MAINTAINERS | 2 +- drivers/scsi/ibmvscsi/ibmvfc.c | 62 ++++++++++++++++++++++++------------------ drivers/scsi/ufs/ufs-qcom.c | 10 +++++++ drivers/scsi/ufs/ufshcd.c | 41 +++++++++------------------- drivers/scsi/vmw_pvscsi.c | 2 -- drivers/scsi/vmw_pvscsi.h | 2 -- 6 files changed, 60 insertions(+), 59 deletions(-) With full diff below. James ---