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RDMA/erdma: Use fixed hardware page size

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Hardware's page size is 4096, but the kernel's page size may vary. Driver
should use hardware's page size when communicating with hardware.

Fixes: 1550557717 ("RDMA/erdma: Add verbs implementation")
Link: https://lore.kernel.org/r/20230307102924.70577-2-chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Cheng Xu 2023-03-07 18:29:23 +08:00 committed by Jason Gunthorpe
parent d946716325
commit d649c638dc
2 changed files with 13 additions and 8 deletions
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4
drivers/infiniband/hw/erdma/erdma_hw.h
View file

@ -112,6 +112,10 @@
#define ERDMA_PAGE_SIZE_SUPPORT 0x7FFFF000
/* Hardware page size definition */
#define ERDMA_HW_PAGE_SHIFT 12
#define ERDMA_HW_PAGE_SIZE 4096
/* WQE related. */
#define EQE_SIZE 16
#define EQE_SHIFT 4

17
drivers/infiniband/hw/erdma/erdma_verbs.c
View file

@ -38,7 +38,7 @@ static int create_qp_cmd(struct erdma_dev *dev, struct erdma_qp *qp)
FIELD_PREP(ERDMA_CMD_CREATE_QP_PD_MASK, pd->pdn);
if (rdma_is_kernel_res(&qp->ibqp.res)) {
u32 pgsz_range = ilog2(SZ_1M) - PAGE_SHIFT;
u32 pgsz_range = ilog2(SZ_1M) - ERDMA_HW_PAGE_SHIFT;
req.sq_cqn_mtt_cfg =
FIELD_PREP(ERDMA_CMD_CREATE_QP_PAGE_SIZE_MASK,
@ -66,13 +66,13 @@ static int create_qp_cmd(struct erdma_dev *dev, struct erdma_qp *qp)
user_qp = &qp->user_qp;
req.sq_cqn_mtt_cfg = FIELD_PREP(
ERDMA_CMD_CREATE_QP_PAGE_SIZE_MASK,
ilog2(user_qp->sq_mtt.page_size) - PAGE_SHIFT);
ilog2(user_qp->sq_mtt.page_size) - ERDMA_HW_PAGE_SHIFT);
req.sq_cqn_mtt_cfg |=
FIELD_PREP(ERDMA_CMD_CREATE_QP_CQN_MASK, qp->scq->cqn);
req.rq_cqn_mtt_cfg = FIELD_PREP(
ERDMA_CMD_CREATE_QP_PAGE_SIZE_MASK,
ilog2(user_qp->rq_mtt.page_size) - PAGE_SHIFT);
ilog2(user_qp->rq_mtt.page_size) - ERDMA_HW_PAGE_SHIFT);
req.rq_cqn_mtt_cfg |=
FIELD_PREP(ERDMA_CMD_CREATE_QP_CQN_MASK, qp->rcq->cqn);
@ -162,7 +162,7 @@ static int create_cq_cmd(struct erdma_dev *dev, struct erdma_cq *cq)
if (rdma_is_kernel_res(&cq->ibcq.res)) {
page_size = SZ_32M;
req.cfg0 |= FIELD_PREP(ERDMA_CMD_CREATE_CQ_PAGESIZE_MASK,
ilog2(page_size) - PAGE_SHIFT);
ilog2(page_size) - ERDMA_HW_PAGE_SHIFT);
req.qbuf_addr_l = lower_32_bits(cq->kern_cq.qbuf_dma_addr);
req.qbuf_addr_h = upper_32_bits(cq->kern_cq.qbuf_dma_addr);
@ -175,8 +175,9 @@ static int create_cq_cmd(struct erdma_dev *dev, struct erdma_cq *cq)
cq->kern_cq.qbuf_dma_addr + (cq->depth << CQE_SHIFT);
} else {
mtt = &cq->user_cq.qbuf_mtt;
req.cfg0 |= FIELD_PREP(ERDMA_CMD_CREATE_CQ_PAGESIZE_MASK,
ilog2(mtt->page_size) - PAGE_SHIFT);
req.cfg0 |=
FIELD_PREP(ERDMA_CMD_CREATE_CQ_PAGESIZE_MASK,
ilog2(mtt->page_size) - ERDMA_HW_PAGE_SHIFT);
if (mtt->mtt_nents == 1) {
req.qbuf_addr_l = lower_32_bits(*(u64 *)mtt->mtt_buf);
req.qbuf_addr_h = upper_32_bits(*(u64 *)mtt->mtt_buf);
@ -636,7 +637,7 @@ static int init_user_qp(struct erdma_qp *qp, struct erdma_ucontext *uctx,
u32 rq_offset;
int ret;
if (len < (PAGE_ALIGN(qp->attrs.sq_size * SQEBB_SIZE) +
if (len < (ALIGN(qp->attrs.sq_size * SQEBB_SIZE, ERDMA_HW_PAGE_SIZE) +
qp->attrs.rq_size * RQE_SIZE))
return -EINVAL;
@ -646,7 +647,7 @@ static int init_user_qp(struct erdma_qp *qp, struct erdma_ucontext *uctx,
if (ret)
return ret;
rq_offset = PAGE_ALIGN(qp->attrs.sq_size << SQEBB_SHIFT);
rq_offset = ALIGN(qp->attrs.sq_size << SQEBB_SHIFT, ERDMA_HW_PAGE_SIZE);
qp->user_qp.rq_offset = rq_offset;
ret = get_mtt_entries(qp->dev, &qp->user_qp.rq_mtt, va + rq_offset,