* [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ
@ 2021-05-20 3:54 Weihang Li
2021-05-20 3:54 ` [PATCH v2 for-next 1/3] RDMA/hns: Rename CMDQ head/tail pointer to PI/CI Weihang Li
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Weihang Li @ 2021-05-20 3:54 UTC (permalink / raw)
To: dledford, jgg; +Cc: leon, linux-rdma, linuxarm, Weihang Li
This series first rename the CMDQ pointers to make it better
understandable, then remove some dead code.
Changes since v1:
* Remove the print in hns_roce_alloc_cmq_desc() in #2 because the caller
already has a print.
* Link: https://patchwork.kernel.org/project/linux-rdma/cover/1620904578-29829-1-git-send-email-liweihang@huawei.com/
Lang Cheng (3):
RDMA/hns: Rename CMDQ head/tail pointer to PI/CI
RDMA/hns: Remove Receive Queue of CMDQ
RDMA/hns: Remove unused CMDQ member
drivers/infiniband/hw/hns/hns_roce_common.h | 4 +-
drivers/infiniband/hw/hns/hns_roce_device.h | 1 -
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 103 ++++++++--------------------
drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 1 -
4 files changed, 30 insertions(+), 79 deletions(-)
--
2.7.4
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2 for-next 1/3] RDMA/hns: Rename CMDQ head/tail pointer to PI/CI
2021-05-20 3:54 [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Weihang Li
@ 2021-05-20 3:54 ` Weihang Li
2021-05-20 3:54 ` [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ Weihang Li
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Weihang Li @ 2021-05-20 3:54 UTC (permalink / raw)
To: dledford, jgg; +Cc: leon, linux-rdma, linuxarm, Lang Cheng, Weihang Li
From: Lang Cheng <chenglang@huawei.com>
the same name represents opposite meanings in new/old driver, it
is hard to maintain, so rename them to PI/CI.
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/hw/hns/hns_roce_common.h | 4 ++--
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 10 +++++-----
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_common.h b/drivers/infiniband/hw/hns/hns_roce_common.h
index d5fe56c..3a5658f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_common.h
+++ b/drivers/infiniband/hw/hns/hns_roce_common.h
@@ -373,8 +373,8 @@
#define ROCEE_TX_CMQ_BASEADDR_L_REG 0x07000
#define ROCEE_TX_CMQ_BASEADDR_H_REG 0x07004
#define ROCEE_TX_CMQ_DEPTH_REG 0x07008
-#define ROCEE_TX_CMQ_HEAD_REG 0x07010
-#define ROCEE_TX_CMQ_TAIL_REG 0x07014
+#define ROCEE_TX_CMQ_PI_REG 0x07010
+#define ROCEE_TX_CMQ_CI_REG 0x07014
#define ROCEE_RX_CMQ_BASEADDR_L_REG 0x07018
#define ROCEE_RX_CMQ_BASEADDR_H_REG 0x0701c
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 49bb4f5..b58d65f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -1255,8 +1255,8 @@ static void hns_roce_cmq_init_regs(struct hns_roce_dev *hr_dev, bool ring_type)
(u32)ring->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
/* Make sure to write tail first and then head */
- roce_write(hr_dev, ROCEE_TX_CMQ_TAIL_REG, 0);
- roce_write(hr_dev, ROCEE_TX_CMQ_HEAD_REG, 0);
+ roce_write(hr_dev, ROCEE_TX_CMQ_CI_REG, 0);
+ roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, 0);
} else {
roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_L_REG, (u32)dma);
roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_H_REG,
@@ -1338,7 +1338,7 @@ static void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
static int hns_roce_cmq_csq_done(struct hns_roce_dev *hr_dev)
{
- u32 tail = roce_read(hr_dev, ROCEE_TX_CMQ_TAIL_REG);
+ u32 tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
struct hns_roce_v2_priv *priv = hr_dev->priv;
return tail == priv->cmq.csq.head;
@@ -1366,7 +1366,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
}
/* Write to hardware */
- roce_write(hr_dev, ROCEE_TX_CMQ_HEAD_REG, csq->head);
+ roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, csq->head);
/* If the command is sync, wait for the firmware to write back,
* if multi descriptors to be sent, use the first one to check
@@ -1397,7 +1397,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
}
} else {
/* FW/HW reset or incorrect number of desc */
- tail = roce_read(hr_dev, ROCEE_TX_CMQ_TAIL_REG);
+ tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
dev_warn(hr_dev->dev, "CMDQ move tail from %d to %d\n",
csq->head, tail);
csq->head = tail;
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ
2021-05-20 3:54 [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Weihang Li
2021-05-20 3:54 ` [PATCH v2 for-next 1/3] RDMA/hns: Rename CMDQ head/tail pointer to PI/CI Weihang Li
@ 2021-05-20 3:54 ` Weihang Li
2021-05-20 8:52 ` Leon Romanovsky
2021-05-20 3:54 ` [PATCH v2 for-next 3/3] RDMA/hns: Remove unused CMDQ member Weihang Li
2021-05-20 15:41 ` [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Jason Gunthorpe
3 siblings, 1 reply; 6+ messages in thread
From: Weihang Li @ 2021-05-20 3:54 UTC (permalink / raw)
To: dledford, jgg; +Cc: leon, linux-rdma, linuxarm, Lang Cheng, Weihang Li
From: Lang Cheng <chenglang@huawei.com>
The CRQ of CMDQ is unused, so remove code about it.
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 97 ++++++++----------------------
drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 1 -
2 files changed, 25 insertions(+), 73 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index b58d65f..bffbac3 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -1209,8 +1209,6 @@ static int hns_roce_alloc_cmq_desc(struct hns_roce_dev *hr_dev,
kfree(ring->desc);
ring->desc = NULL;
- dev_err_ratelimited(hr_dev->dev,
- "failed to map cmq desc addr.\n");
return -ENOMEM;
}
@@ -1228,44 +1226,32 @@ static void hns_roce_free_cmq_desc(struct hns_roce_dev *hr_dev,
kfree(ring->desc);
}
-static int hns_roce_init_cmq_ring(struct hns_roce_dev *hr_dev, bool ring_type)
+static int init_csq(struct hns_roce_dev *hr_dev,
+ struct hns_roce_v2_cmq_ring *csq)
{
- struct hns_roce_v2_priv *priv = hr_dev->priv;
- struct hns_roce_v2_cmq_ring *ring = (ring_type == TYPE_CSQ) ?
- &priv->cmq.csq : &priv->cmq.crq;
+ dma_addr_t dma;
+ int ret;
- ring->flag = ring_type;
- ring->head = 0;
+ csq->desc_num = CMD_CSQ_DESC_NUM;
+ spin_lock_init(&csq->lock);
+ csq->flag = TYPE_CSQ;
+ csq->head = 0;
- return hns_roce_alloc_cmq_desc(hr_dev, ring);
-}
+ ret = hns_roce_alloc_cmq_desc(hr_dev, csq);
+ if (ret)
+ return ret;
-static void hns_roce_cmq_init_regs(struct hns_roce_dev *hr_dev, bool ring_type)
-{
- struct hns_roce_v2_priv *priv = hr_dev->priv;
- struct hns_roce_v2_cmq_ring *ring = (ring_type == TYPE_CSQ) ?
- &priv->cmq.csq : &priv->cmq.crq;
- dma_addr_t dma = ring->desc_dma_addr;
-
- if (ring_type == TYPE_CSQ) {
- roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_L_REG, (u32)dma);
- roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_H_REG,
- upper_32_bits(dma));
- roce_write(hr_dev, ROCEE_TX_CMQ_DEPTH_REG,
- (u32)ring->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
-
- /* Make sure to write tail first and then head */
- roce_write(hr_dev, ROCEE_TX_CMQ_CI_REG, 0);
- roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, 0);
- } else {
- roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_L_REG, (u32)dma);
- roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_H_REG,
- upper_32_bits(dma));
- roce_write(hr_dev, ROCEE_RX_CMQ_DEPTH_REG,
- (u32)ring->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
- roce_write(hr_dev, ROCEE_RX_CMQ_HEAD_REG, 0);
- roce_write(hr_dev, ROCEE_RX_CMQ_TAIL_REG, 0);
- }
+ dma = csq->desc_dma_addr;
+ roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_L_REG, lower_32_bits(dma));
+ roce_write(hr_dev, ROCEE_TX_CMQ_BASEADDR_H_REG, upper_32_bits(dma));
+ roce_write(hr_dev, ROCEE_TX_CMQ_DEPTH_REG,
+ (u32)csq->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
+
+ /* Make sure to write CI first and then PI */
+ roce_write(hr_dev, ROCEE_TX_CMQ_CI_REG, 0);
+ roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, 0);
+
+ return 0;
}
static int hns_roce_v2_cmq_init(struct hns_roce_dev *hr_dev)
@@ -1273,43 +1259,11 @@ static int hns_roce_v2_cmq_init(struct hns_roce_dev *hr_dev)
struct hns_roce_v2_priv *priv = hr_dev->priv;
int ret;
- /* Setup the queue entries for command queue */
- priv->cmq.csq.desc_num = CMD_CSQ_DESC_NUM;
- priv->cmq.crq.desc_num = CMD_CRQ_DESC_NUM;
-
- /* Setup the lock for command queue */
- spin_lock_init(&priv->cmq.csq.lock);
- spin_lock_init(&priv->cmq.crq.lock);
-
- /* Setup Tx write back timeout */
priv->cmq.tx_timeout = HNS_ROCE_CMQ_TX_TIMEOUT;
- /* Init CSQ */
- ret = hns_roce_init_cmq_ring(hr_dev, TYPE_CSQ);
- if (ret) {
- dev_err_ratelimited(hr_dev->dev,
- "failed to init CSQ, ret = %d.\n", ret);
- return ret;
- }
-
- /* Init CRQ */
- ret = hns_roce_init_cmq_ring(hr_dev, TYPE_CRQ);
- if (ret) {
- dev_err_ratelimited(hr_dev->dev,
- "failed to init CRQ, ret = %d.\n", ret);
- goto err_crq;
- }
-
- /* Init CSQ REG */
- hns_roce_cmq_init_regs(hr_dev, TYPE_CSQ);
-
- /* Init CRQ REG */
- hns_roce_cmq_init_regs(hr_dev, TYPE_CRQ);
-
- return 0;
-
-err_crq:
- hns_roce_free_cmq_desc(hr_dev, &priv->cmq.csq);
+ ret = init_csq(hr_dev, &priv->cmq.csq);
+ if (ret)
+ dev_err(hr_dev->dev, "failed to init CSQ, ret = %d.\n", ret);
return ret;
}
@@ -1319,7 +1273,6 @@ static void hns_roce_v2_cmq_exit(struct hns_roce_dev *hr_dev)
struct hns_roce_v2_priv *priv = hr_dev->priv;
hns_roce_free_cmq_desc(hr_dev, &priv->cmq.csq);
- hns_roce_free_cmq_desc(hr_dev, &priv->cmq.crq);
}
static void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index a2100a6..d168314 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -1731,7 +1731,6 @@ struct hns_roce_v2_cmq_ring {
struct hns_roce_v2_cmq {
struct hns_roce_v2_cmq_ring csq;
- struct hns_roce_v2_cmq_ring crq;
u16 tx_timeout;
};
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v2 for-next 3/3] RDMA/hns: Remove unused CMDQ member
2021-05-20 3:54 [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Weihang Li
2021-05-20 3:54 ` [PATCH v2 for-next 1/3] RDMA/hns: Rename CMDQ head/tail pointer to PI/CI Weihang Li
2021-05-20 3:54 ` [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ Weihang Li
@ 2021-05-20 3:54 ` Weihang Li
2021-05-20 15:41 ` [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Jason Gunthorpe
3 siblings, 0 replies; 6+ messages in thread
From: Weihang Li @ 2021-05-20 3:54 UTC (permalink / raw)
To: dledford, jgg; +Cc: leon, linux-rdma, linuxarm, Lang Cheng, Weihang Li
From: Lang Cheng <chenglang@huawei.com>
The hcr_mutex was used to serialize mailbox post. Now that mailbox supports
concurrency, this variable is no longer useful.
Fixes: a389d016c030 ("RDMA/hns: Enable all CMDQ context")
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/hw/hns/hns_roce_device.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index 97800d2..90135dd 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -555,7 +555,6 @@ struct hns_roce_cmd_context {
struct hns_roce_cmdq {
struct dma_pool *pool;
- struct mutex hcr_mutex;
struct semaphore poll_sem;
/*
* Event mode: cmd register mutex protection,
--
2.7.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ
2021-05-20 3:54 ` [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ Weihang Li
@ 2021-05-20 8:52 ` Leon Romanovsky
0 siblings, 0 replies; 6+ messages in thread
From: Leon Romanovsky @ 2021-05-20 8:52 UTC (permalink / raw)
To: Weihang Li; +Cc: dledford, jgg, linux-rdma, linuxarm, Lang Cheng
On Thu, May 20, 2021 at 11:54:35AM +0800, Weihang Li wrote:
> From: Lang Cheng <chenglang@huawei.com>
>
> The CRQ of CMDQ is unused, so remove code about it.
>
> Signed-off-by: Lang Cheng <chenglang@huawei.com>
> Signed-off-by: Weihang Li <liweihang@huawei.com>
> ---
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 97 ++++++++----------------------
> drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 1 -
> 2 files changed, 25 insertions(+), 73 deletions(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ
2021-05-20 3:54 [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Weihang Li
` (2 preceding siblings ...)
2021-05-20 3:54 ` [PATCH v2 for-next 3/3] RDMA/hns: Remove unused CMDQ member Weihang Li
@ 2021-05-20 15:41 ` Jason Gunthorpe
3 siblings, 0 replies; 6+ messages in thread
From: Jason Gunthorpe @ 2021-05-20 15:41 UTC (permalink / raw)
To: Weihang Li; +Cc: dledford, leon, linux-rdma, linuxarm
On Thu, May 20, 2021 at 11:54:33AM +0800, Weihang Li wrote:
> This series first rename the CMDQ pointers to make it better
> understandable, then remove some dead code.
>
> Changes since v1:
> * Remove the print in hns_roce_alloc_cmq_desc() in #2 because the caller
> already has a print.
> * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1620904578-29829-1-git-send-email-liweihang@huawei.com/
>
> Lang Cheng (3):
> RDMA/hns: Rename CMDQ head/tail pointer to PI/CI
> RDMA/hns: Remove Receive Queue of CMDQ
> RDMA/hns: Remove unused CMDQ member
Applied to for-next, thanks
Jason
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-05-20 15:42 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2021-05-20 3:54 [PATCH v2 for-next 0/3] RDMA/hns: Cleanups on CMDQ Weihang Li
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2021-05-20 3:54 ` [PATCH v2 for-next 2/3] RDMA/hns: Remove Receive Queue of CMDQ Weihang Li
2021-05-20 8:52 ` Leon Romanovsky
2021-05-20 3:54 ` [PATCH v2 for-next 3/3] RDMA/hns: Remove unused CMDQ member Weihang Li
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