Subject: [PATCH mlx5-next 02/12] net/mlx5: Use event mask based on device capabilities

From: Leon Romanovsky <[email-masked]>
Date: Thu, 13 Jun 2019 09:26:30 +0300

From: Yishai Hadas <[email-masked]>

Use the reported device capabilities for the supported user events (i.e.
affiliated and un-affiliated) to set the EQ mask.

As the event mask can be up to 256 defined by 4 entries of u64 change
the applicable code to work accordingly.

Signed-off-by: Yishai Hadas <[email-masked]>
Reviewed-by: Saeed Mahameed <[email-masked]>
Signed-off-by: Leon Romanovsky <[email-masked]>
---
 drivers/infiniband/hw/mlx5/odp.c             |  3 +-
 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 43 ++++++++++++++++----
 drivers/net/ethernet/mellanox/mlx5/core/fw.c |  6 +++
 include/linux/mlx5/device.h                  |  6 ++-
 include/linux/mlx5/eq.h                      |  2 +-
 include/linux/mlx5/mlx5_ifc.h                | 13 ++++--
 6 files changed, 59 insertions(+), 14 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index 1bf7881aed59..caa10a338668 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -1556,11 +1556,12 @@ mlx5_ib_create_pf_eq(struct mlx5_ib_dev *dev, struct mlx5_ib_pf_eq *eq)
 
 	param = (struct mlx5_eq_param) {
 		.index = MLX5_EQ_PFAULT_IDX,
-		.mask = 1 << MLX5_EVENT_TYPE_PAGE_FAULT,
 		.nent = MLX5_IB_NUM_PF_EQE,
 		.context = eq,
 		.handler = mlx5_ib_eq_pf_int
 	};
+
+	param.mask[0] = 1ull << MLX5_EVENT_TYPE_PAGE_FAULT;
 	eq->core = mlx5_eq_create_generic(dev->mdev, "mlx5_ib_page_fault_eq", &param);
 	if (IS_ERR(eq->core)) {
 		err = PTR_ERR(eq->core);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index 7c4213147541..696a0fdd075a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -261,6 +261,7 @@ create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, const char *name,
 	int inlen;
 	u32 *in;
 	int err;
+	int i;
 
 	if (eq_table->irq_info[vecidx].context)
 		return -EEXIST;
@@ -291,10 +292,12 @@ create_map_eq(struct mlx5_core_dev *dev, struct mlx5_eq *eq, const char *name,
 	mlx5_fill_page_array(&eq->buf, pas);
 
 	MLX5_SET(create_eq_in, in, opcode, MLX5_CMD_OP_CREATE_EQ);
-	if (!param->mask && MLX5_CAP_GEN(dev, log_max_uctx))
+	if (!param->mask[0] && MLX5_CAP_GEN(dev, log_max_uctx))
 		MLX5_SET(create_eq_in, in, uid, MLX5_SHARED_RESOURCE_UID);
 
-	MLX5_SET64(create_eq_in, in, event_bitmask, param->mask);
+	for (i = 0; i < 4; i++)
+		MLX5_ARRAY_SET64(create_eq_in, in, event_bitmask, i,
+				 param->mask[i]);
 
 	eqc = MLX5_ADDR_OF(create_eq_in, in, eq_context_entry);
 	MLX5_SET(eqc, eqc, log_eq_size, ilog2(eq->nent));
@@ -498,10 +501,32 @@ static int cq_err_event_notifier(struct notifier_block *nb,
 	return NOTIFY_OK;
 }
 
-static u64 gather_async_events_mask(struct mlx5_core_dev *dev)
+static void gather_async_events_from_cap(struct mlx5_core_dev *dev,
+					 u64 mask[4])
+{
+	__be64 *user_unaffiliated_events;
+	__be64 *user_affiliated_events;
+	int i;
+
+	user_affiliated_events =
+		MLX5_CAP_DEV_EVENT(dev, user_affiliated_events);
+	user_unaffiliated_events =
+		MLX5_CAP_DEV_EVENT(dev, user_unaffiliated_events);
+
+	for (i = 0; i < 4; i++)
+		mask[i] = be64_to_cpu(user_affiliated_events[i] |
+				      user_unaffiliated_events[i]);
+}
+
+static void gather_async_events_mask(struct mlx5_core_dev *dev, u64 mask[4])
 {
 	u64 async_event_mask = MLX5_ASYNC_EVENT_MASK;
 
+	if (MLX5_CAP_GEN(dev, event_cap)) {
+		gather_async_events_from_cap(dev, mask);
+		return;
+	}
+
 	if (MLX5_VPORT_MANAGER(dev))
 		async_event_mask |= (1ull << MLX5_EVENT_TYPE_NIC_VPORT_CHANGE);
 
@@ -534,7 +559,7 @@ static u64 gather_async_events_mask(struct mlx5_core_dev *dev)
 	if (mlx5_core_is_ecpf_esw_manager(dev))
 		async_event_mask |= (1ull << MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE);
 
-	return async_event_mask;
+	mask[0] = async_event_mask;
 }
 
 static int create_async_eqs(struct mlx5_core_dev *dev)
@@ -548,11 +573,12 @@ static int create_async_eqs(struct mlx5_core_dev *dev)
 
 	param = (struct mlx5_eq_param) {
 		.index = MLX5_EQ_CMD_IDX,
-		.mask = 1ull << MLX5_EVENT_TYPE_CMD,
 		.nent = MLX5_NUM_CMD_EQE,
 		.context = &table->cmd_eq,
 		.handler = mlx5_eq_async_int,
 	};
+
+	param.mask[0] = 1ull << MLX5_EVENT_TYPE_CMD;
 	err = create_async_eq(dev, "mlx5_cmd_eq", &table->cmd_eq, &param);
 	if (err) {
 		mlx5_core_warn(dev, "failed to create cmd EQ %d\n", err);
@@ -563,11 +589,12 @@ static int create_async_eqs(struct mlx5_core_dev *dev)
 
 	param = (struct mlx5_eq_param) {
 		.index = MLX5_EQ_ASYNC_IDX,
-		.mask = gather_async_events_mask(dev),
 		.nent = MLX5_NUM_ASYNC_EQE,
 		.context = &table->async_eq,
 		.handler = mlx5_eq_async_int,
 	};
+
+	gather_async_events_mask(dev, param.mask);
 	err = create_async_eq(dev, "mlx5_async_eq", &table->async_eq, &param);
 	if (err) {
 		mlx5_core_warn(dev, "failed to create async EQ %d\n", err);
@@ -576,11 +603,12 @@ static int create_async_eqs(struct mlx5_core_dev *dev)
 
 	param = (struct mlx5_eq_param) {
 		.index = MLX5_EQ_PAGEREQ_IDX,
-		.mask =  1 << MLX5_EVENT_TYPE_PAGE_REQUEST,
 		.nent = /* TODO: sriov max_vf + */ 1,
 		.context = &table->pages_eq,
 		.handler = mlx5_eq_async_int,
 	};
+
+	param.mask[0] = 1ull << MLX5_EVENT_TYPE_PAGE_REQUEST;
 	err = create_async_eq(dev, "mlx5_pages_eq", &table->pages_eq, &param);
 	if (err) {
 		mlx5_core_warn(dev, "failed to create pages EQ %d\n", err);
@@ -837,7 +865,6 @@ static int create_comp_eqs(struct mlx5_core_dev *dev)
 		snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i);
 		param = (struct mlx5_eq_param) {
 			.index = vecidx,
-			.mask = 0,
 			.nent = nent,
 			.context = &eq->core,
 			.handler = mlx5_eq_comp_int
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
index 1ab6f7e3bec6..05367f15c3a7 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -202,6 +202,12 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 			return err;
 	}
 
+	if (MLX5_CAP_GEN(dev, event_cap)) {
+		err = mlx5_core_get_caps(dev, MLX5_CAP_DEV_EVENT);
+		if (err)
+			return err;
+	}
+
 	return 0;
 }
 
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index fc2b6e807f06..373a1b650a01 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -351,7 +351,7 @@ enum mlx5_event {
 
 	MLX5_EVENT_TYPE_DEVICE_TRACER      = 0x26,
 
-	MLX5_EVENT_TYPE_MAX                = MLX5_EVENT_TYPE_DEVICE_TRACER + 1,
+	MLX5_EVENT_TYPE_MAX                = 0x100,
 };
 
 enum {
@@ -1077,6 +1077,7 @@ enum mlx5_cap_type {
 	MLX5_CAP_DEBUG,
 	MLX5_CAP_RESERVED_14,
 	MLX5_CAP_DEV_MEM,
+	MLX5_CAP_DEV_EVENT = 0x14,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1255,6 +1256,9 @@ enum mlx5_qcam_feature_groups {
 #define MLX5_CAP64_DEV_MEM(mdev, cap)\
 	MLX5_GET64(device_mem_cap, mdev->caps.hca_cur[MLX5_CAP_DEV_MEM], cap)
 
+#define MLX5_CAP_DEV_EVENT(mdev, cap)\
+	MLX5_ADDR_OF(device_event_cap, (mdev)->caps.hca_cur[MLX5_CAP_DEV_EVENT], cap)
+
 enum {
 	MLX5_CMD_STAT_OK			= 0x0,
 	MLX5_CMD_STAT_INT_ERR			= 0x1,
diff --git a/include/linux/mlx5/eq.h b/include/linux/mlx5/eq.h
index 00045cc4ea11..98152f799ecd 100644
--- a/include/linux/mlx5/eq.h
+++ b/include/linux/mlx5/eq.h
@@ -25,7 +25,7 @@ struct mlx5_core_dev;
 struct mlx5_eq_param {
 	u8             index;
 	int            nent;
-	u64            mask;
+	u64            mask[4];
 	void          *context;
 	irq_handler_t  handler;
 };
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 9c9979cf0fd5..24a814b445bb 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -818,6 +818,12 @@ struct mlx5_ifc_device_mem_cap_bits {
 	u8         reserved_at_180[0x680];
 };
 
+struct mlx5_ifc_device_event_cap_bits {
+	u8         user_affiliated_events[4][0x40];
+
+	u8         user_unaffiliated_events[4][0x40];
+};
+
 enum {
 	MLX5_ATOMIC_CAPS_ATOMIC_SIZE_QP_1_BYTE     = 0x0,
 	MLX5_ATOMIC_CAPS_ATOMIC_SIZE_QP_2_BYTES    = 0x2,
@@ -975,7 +981,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 
 	u8         log_max_srq_sz[0x8];
 	u8         log_max_qp_sz[0x8];
-	u8         reserved_at_90[0x8];
+	u8         event_cap[0x1];
+	u8         reserved_at_91[0x7];
 	u8         prio_tag_required[0x1];
 	u8         reserved_at_99[0x2];
 	u8         log_max_qp[0x5];
@@ -7357,9 +7364,9 @@ struct mlx5_ifc_create_eq_in_bits {
 
 	u8         reserved_at_280[0x40];
 
-	u8         event_bitmask[0x40];
+	u8         event_bitmask[4][0x40];
 
-	u8         reserved_at_300[0x580];
+	u8         reserved_at_3c0[0x4c0];
 
 	u8         pas[0][0x40];
 };
-- 
2.20.1