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RDMA/erdma: Report atomic capacity when hardware supports atomic feature 

Introduce "capacity flags" field at where hardware put all zeros originally
in "query device" response. Using this field, hardware can report atomic
feature if supports.

Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221107021845.44598-3-chengyou@linux.alibaba.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Cheng Xu 2022-11-07 10:18:44 +08:00 committed by Leon Romanovsky
parent ece43fad22
commit 71c6925f28
4 changed files with 11 additions and 0 deletions
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1
drivers/infiniband/hw/erdma/erdma.h
View File

@ -124,6 +124,7 @@ struct erdma_devattr {
u32 fw_version;
unsigned char peer_addr[ETH_ALEN];
unsigned long cap_flags;
int numa_node;
enum erdma_cc_alg cc;

5
drivers/infiniband/hw/erdma/erdma_hw.h
View File

@ -303,6 +303,7 @@ struct erdma_cmdq_destroy_qp_req {
/* cap qword 0 definition */
#define ERDMA_CMD_DEV_CAP_MAX_CQE_MASK GENMASK_ULL(47, 40)
#define ERDMA_CMD_DEV_CAP_FLAGS_MASK GENMASK_ULL(31, 24)
#define ERDMA_CMD_DEV_CAP_MAX_RECV_WR_MASK GENMASK_ULL(23, 16)
#define ERDMA_CMD_DEV_CAP_MAX_MR_SIZE_MASK GENMASK_ULL(7, 0)
@ -314,6 +315,10 @@ struct erdma_cmdq_destroy_qp_req {
#define ERDMA_NQP_PER_QBLOCK 1024
enum {
ERDMA_DEV_CAP_FLAGS_ATOMIC = 1 << 7,
};
#define ERDMA_CMD_INFO0_FW_VER_MASK GENMASK_ULL(31, 0)
/* CQE hdr */

1
drivers/infiniband/hw/erdma/erdma_main.c
View File

@ -374,6 +374,7 @@ static int erdma_dev_attrs_init(struct erdma_dev *dev)
dev->attrs.max_qp = ERDMA_NQP_PER_QBLOCK * ERDMA_GET_CAP(QBLOCK, cap1);
dev->attrs.max_mr = dev->attrs.max_qp << 1;
dev->attrs.max_cq = dev->attrs.max_qp << 1;
dev->attrs.cap_flags = ERDMA_GET_CAP(FLAGS, cap0);
dev->attrs.max_send_wr = ERDMA_MAX_SEND_WR;
dev->attrs.max_ord = ERDMA_MAX_ORD;

4
drivers/infiniband/hw/erdma/erdma_verbs.c
View File

@ -288,6 +288,10 @@ int erdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr,
attr->max_mw = dev->attrs.max_mw;
attr->max_fast_reg_page_list_len = ERDMA_MAX_FRMR_PA;
attr->page_size_cap = ERDMA_PAGE_SIZE_SUPPORT;
if (dev->attrs.cap_flags & ERDMA_DEV_CAP_FLAGS_ATOMIC)
attr->atomic_cap = IB_ATOMIC_GLOB;
attr->fw_ver = dev->attrs.fw_version;
if (dev->netdev)