[PATCH 5.15 031/201] RDMA/irdma: Do not advertise 1GB page size for x722

Greg Kroah-Hartman
2022-07-27T17:02:34Z

From: Mustafa Ismail <mustafa.ismail@intel.com>

[ Upstream commit 5e8afb8792f3b6ae7ccf700f8c19225382636401 ]

x722 does not support 1GB page size but the irdma driver incorrectly
advertises 1GB page size support for x722 device to ib_core to compute the
best page size to use on this MR. This could lead to incorrect start
offsets computed by hardware on the MR.

Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/hw/irdma/i40iw_hw.c | 1 +
drivers/infiniband/hw/irdma/icrdma_hw.c | 1 +
drivers/infiniband/hw/irdma/irdma.h | 1 +
drivers/infiniband/hw/irdma/verbs.c | 4 ++--
4 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/irdma/i40iw_hw.c b/drivers/infiniband/hw/irdma/i40iw_hw.c
index 64148ad8a604..040d4e2b9767 100644
--- a/drivers/infiniband/hw/irdma/i40iw_hw.c
+++ b/drivers/infiniband/hw/irdma/i40iw_hw.c
@@ -202,6 +202,7 @@ void i40iw_init_hw(struct irdma_sc_dev *dev)
dev->hw_attrs.uk_attrs.max_hw_read_sges = I40IW_MAX_SGE_RD;
dev->hw_attrs.max_hw_device_pages = I40IW_MAX_PUSH_PAGE_COUNT;
dev->hw_attrs.uk_attrs.max_hw_inline = I40IW_MAX_INLINE_DATA_SIZE;
+ dev->hw_attrs.page_size_cap = SZ_4K | SZ_2M;
dev->hw_attrs.max_hw_ird = I40IW_MAX_IRD_SIZE;
dev->hw_attrs.max_hw_ord = I40IW_MAX_ORD_SIZE;
dev->hw_attrs.max_hw_wqes = I40IW_MAX_WQ_ENTRIES;
diff --git a/drivers/infiniband/hw/irdma/icrdma_hw.c b/drivers/infiniband/hw/irdma/icrdma_hw.c
index cf53b17510cd..5986fd906308 100644
--- a/drivers/infiniband/hw/irdma/icrdma_hw.c
+++ b/drivers/infiniband/hw/irdma/icrdma_hw.c
@@ -139,6 +139,7 @@ void icrdma_init_hw(struct irdma_sc_dev *dev)
dev->cqp_db = dev->hw_regs[IRDMA_CQPDB];
dev->cq_ack_db = dev->hw_regs[IRDMA_CQACK];
dev->irq_ops = &icrdma_irq_ops;
+ dev->hw_attrs.page_size_cap = SZ_4K | SZ_2M | SZ_1G;
dev->hw_attrs.max_hw_ird = ICRDMA_MAX_IRD_SIZE;
dev->hw_attrs.max_hw_ord = ICRDMA_MAX_ORD_SIZE;
dev->hw_attrs.max_stat_inst = ICRDMA_MAX_STATS_COUNT;
diff --git a/drivers/infiniband/hw/irdma/irdma.h b/drivers/infiniband/hw/irdma/irdma.h
index 46c12334c735..4789e85d717b 100644
--- a/drivers/infiniband/hw/irdma/irdma.h
+++ b/drivers/infiniband/hw/irdma/irdma.h
@@ -127,6 +127,7 @@ struct irdma_hw_attrs {
u64 max_hw_outbound_msg_size;
u64 max_hw_inbound_msg_size;
u64 max_mr_size;
+ u64 page_size_cap;
u32 min_hw_qp_id;
u32 min_hw_aeq_size;
u32 max_hw_aeq_size;
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 8a3ac4257e86..0eef46428691 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -29,7 +29,7 @@ static int irdma_query_device(struct ib_device *ibdev,
props->vendor_part_id = pcidev->device;

props->hw_ver = rf->pcidev->revision;
- props->page_size_cap = SZ_4K | SZ_2M | SZ_1G;
+ props->page_size_cap = hw_attrs->page_size_cap;
props->max_mr_size = hw_attrs->max_mr_size;
props->max_qp = rf->max_qp - rf->used_qps;
props->max_qp_wr = hw_attrs->max_qp_wr;
@@ -2776,7 +2776,7 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len,

if (req.reg_type == IRDMA_MEMREG_TYPE_MEM) {
iwmr->page_size = ib_umem_find_best_pgsz(region,
- SZ_4K | SZ_2M | SZ_1G,
+ iwdev->rf->sc_dev.hw_attrs.page_size_cap,
virt);
if (unlikely(!iwmr->page_size)) {
kfree(iwmr);
--
2.35.1