From: Sagi Grimberg <sagi@grimberg.me>
Date: Mon, 22 Jul 2019 17:06:53 -0700
Subject: [PATCH] nvme: move sqsize setting to the core
References: bsc#1156419,jsc#SLE-8281
Git-commit: c0f2f45be2976abe973c8cd544f38e2d928771b0
Patch-mainline: v5.4-rc1
nvme_enable_ctrl reads the cap register right after, so
no need to do that locally in the transport driver. Have
sqsize setting in nvme_init_identify.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/nvme/host/core.c | 20 +++++++++++---------
drivers/nvme/host/fc.c | 12 +-----------
drivers/nvme/host/nvme.h | 2 +-
drivers/nvme/host/pci.c | 2 +-
drivers/nvme/host/rdma.c | 13 +------------
drivers/nvme/host/tcp.c | 11 +----------
drivers/nvme/target/loop.c | 12 +-----------
7 files changed, 17 insertions(+), 55 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8a4d949dce87..fce2f4e9052c 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2051,16 +2051,23 @@ int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap)
}
EXPORT_SYMBOL_GPL(nvme_disable_ctrl);
-int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap)
+int nvme_enable_ctrl(struct nvme_ctrl *ctrl)
{
/*
* Default to a 4K page size, with the intention to update this
* path in the future to accomodate architectures with differing
* kernel and IO page sizes.
*/
- unsigned dev_page_min = NVME_CAP_MPSMIN(cap) + 12, page_shift = 12;
+ unsigned dev_page_min, page_shift = 12;
int ret;
+ ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);
+ if (ret) {
+ dev_err(ctrl->device, "Reading CAP failed (%d)\n", ret);
+ return ret;
+ }
+ dev_page_min = NVME_CAP_MPSMIN(ctrl->cap) + 12;
+
if (page_shift < dev_page_min) {
dev_err(ctrl->device,
"Minimum device page size %u too large for host (%u)\n",
@@ -2079,7 +2086,7 @@ int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap)
ret = ctrl->ops->reg_write32(ctrl, NVME_REG_CC, ctrl->ctrl_config);
if (ret)
return ret;
- return nvme_wait_ready(ctrl, cap, true);
+ return nvme_wait_ready(ctrl, ctrl->cap, true);
}
EXPORT_SYMBOL_GPL(nvme_enable_ctrl);
@@ -2675,13 +2682,8 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
dev_err(ctrl->device, "Reading VS failed (%d)\n", ret);
return ret;
}
-
- ret = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);
- if (ret) {
- dev_err(ctrl->device, "Reading CAP failed (%d)\n", ret);
- return ret;
- }
page_shift = NVME_CAP_MPSMIN(ctrl->cap) + 12;
+ ctrl->sqsize = min_t(int, NVME_CAP_MQES(ctrl->cap), ctrl->sqsize);
if (ctrl->vs >= NVME_VS(1, 1, 0))
ctrl->subsystem = NVME_CAP_NSSRC(ctrl->cap);
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index f39ed8cc23a2..ec264b2e54c3 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2648,17 +2648,7 @@ nvme_fc_create_association(struct nvme_fc_ctrl *ctrl)
* prior connection values
*/
- ret = nvmf_reg_read64(&ctrl->ctrl, NVME_REG_CAP, &ctrl->ctrl.cap);
- if (ret) {
- dev_err(ctrl->ctrl.device,
- "prop_get NVME_REG_CAP failed\n");
- goto out_disconnect_admin_queue;
- }
-
- ctrl->ctrl.sqsize =
- min_t(int, NVME_CAP_MQES(ctrl->ctrl.cap), ctrl->ctrl.sqsize);
-
- ret = nvme_enable_ctrl(&ctrl->ctrl, ctrl->ctrl.cap);
+ ret = nvme_enable_ctrl(&ctrl->ctrl);
if (ret)
goto out_disconnect_admin_queue;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 2d678fb968c7..1849412db65f 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -432,7 +432,7 @@ bool nvme_cancel_request(struct request *req, void *data, bool reserved);
bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
enum nvme_ctrl_state new_state);
int nvme_disable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
-int nvme_enable_ctrl(struct nvme_ctrl *ctrl, u64 cap);
+int nvme_enable_ctrl(struct nvme_ctrl *ctrl);
int nvme_shutdown_ctrl(struct nvme_ctrl *ctrl);
int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
const struct nvme_ctrl_ops *ops, unsigned long quirks);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index c0e34d6614b8..070d27ad7ad2 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1698,7 +1698,7 @@ static int nvme_pci_configure_admin_queue(struct nvme_dev *dev)
lo_hi_writeq(nvmeq->sq_dma_addr, dev->bar + NVME_REG_ASQ);
lo_hi_writeq(nvmeq->cq_dma_addr, dev->bar + NVME_REG_ACQ);
- result = nvme_enable_ctrl(&dev->ctrl, dev->ctrl.cap);
+ result = nvme_enable_ctrl(&dev->ctrl);
if (result)
return result;
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index e96c4b552c7f..2a63a0bc539b 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -816,18 +816,7 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl,
if (error)
goto out_cleanup_queue;
- error = ctrl->ctrl.ops->reg_read64(&ctrl->ctrl, NVME_REG_CAP,
- &ctrl->ctrl.cap);
- if (error) {
- dev_err(ctrl->ctrl.device,
- "prop_get NVME_REG_CAP failed\n");
- goto out_stop_queue;
- }
-
- ctrl->ctrl.sqsize =
- min_t(int, NVME_CAP_MQES(ctrl->ctrl.cap), ctrl->ctrl.sqsize);
-
- error = nvme_enable_ctrl(&ctrl->ctrl, ctrl->ctrl.cap);
+ error = nvme_enable_ctrl(&ctrl->ctrl);
if (error)
goto out_stop_queue;
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 2744652171fe..678483d8ffb1 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1707,16 +1707,7 @@ static int nvme_tcp_configure_admin_queue(struct nvme_ctrl *ctrl, bool new)
if (error)
goto out_cleanup_queue;
- error = ctrl->ops->reg_read64(ctrl, NVME_REG_CAP, &ctrl->cap);
- if (error) {
- dev_err(ctrl->device,
- "prop_get NVME_REG_CAP failed\n");
- goto out_stop_queue;
- }
-
- ctrl->sqsize = min_t(int, NVME_CAP_MQES(ctrl->cap), ctrl->sqsize);
-
- error = nvme_enable_ctrl(ctrl, ctrl->cap);
+ error = nvme_enable_ctrl(ctrl);
if (error)
goto out_stop_queue;
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index ea7843dafd26..e70904a8b784 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -369,17 +369,7 @@ static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl)
set_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[0].flags);
- error = nvmf_reg_read64(&ctrl->ctrl, NVME_REG_CAP, &ctrl->ctrl.cap);
- if (error) {
- dev_err(ctrl->ctrl.device,
- "prop_get NVME_REG_CAP failed\n");
- goto out_cleanup_queue;
- }
-
- ctrl->ctrl.sqsize =
- min_t(int, NVME_CAP_MQES(ctrl->ctrl.cap), ctrl->ctrl.sqsize);
-
- error = nvme_enable_ctrl(&ctrl->ctrl, ctrl->ctrl.cap);
+ error = nvme_enable_ctrl(&ctrl->ctrl);
if (error)
goto out_cleanup_queue;
--
2.16.4