[ofa-general] [PATCH 15/16 v4] IB/mlx4: Add support for modifying CQ parameters
Eli Cohen
eli at mellanox.co.il
Wed Jan 30 08:31:53 PST 2008
IB/mlx4: Add support for modifying CQ parameters
Signed-off-by: Eli Cohen <eli at mellnaox.co.il>
---
drivers/infiniband/hw/mlx4/cq.c | 19 +++++++++++++
drivers/infiniband/hw/mlx4/main.c | 1 +
drivers/infiniband/hw/mlx4/mlx4_ib.h | 1 +
drivers/net/mlx4/cq.c | 49 ++++++++++++++++++----------------
include/linux/mlx4/cmd.h | 2 +-
include/linux/mlx4/cq.h | 25 +++++++++++++++++
6 files changed, 73 insertions(+), 24 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 75fc2b3..66c0d6c 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -91,6 +91,25 @@ static struct mlx4_cqe *next_cqe_sw(struct mlx4_ib_cq *cq)
return get_sw_cqe(cq, cq->mcq.cons_index);
}
+int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
+{
+ struct mlx4_ib_cq *mcq = to_mcq(cq);
+ struct mlx4_ib_dev *dev = to_mdev(cq->device);
+ struct mlx4_cq_context *context;
+ int err;
+
+ context = kzalloc(sizeof *context, GFP_KERNEL);
+ if (!context)
+ return -ENOMEM;
+
+ context->cq_period = cpu_to_be16(cq_period);
+ context->cq_max_count = cpu_to_be16(cq_count);
+ err = mlx4_cq_modify(dev->dev, &mcq->mcq, context, 1);
+
+ kfree(context);
+ return err;
+}
+
struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
struct ib_ucontext *context,
struct ib_udata *udata)
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 2dd0de3..6b00a81 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -601,6 +601,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.post_send = mlx4_ib_post_send;
ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
+ ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 39bc060..211eb56 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -252,6 +252,7 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
struct ib_udata *udata);
int mlx4_ib_dereg_mr(struct ib_mr *mr);
+int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
struct ib_ucontext *context,
struct ib_udata *udata);
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c
index d4441fe..39004c5 100644
--- a/drivers/net/mlx4/cq.c
+++ b/drivers/net/mlx4/cq.c
@@ -38,33 +38,11 @@
#include <linux/hardirq.h>
#include <linux/mlx4/cmd.h>
+#include <linux/mlx4/cq.h>
#include "mlx4.h"
#include "icm.h"
-struct mlx4_cq_context {
- __be32 flags;
- u16 reserved1[3];
- __be16 page_offset;
- __be32 logsize_usrpage;
- u8 reserved2;
- u8 cq_period;
- u8 reserved3;
- u8 cq_max_count;
- u8 reserved4[3];
- u8 comp_eqn;
- u8 log_page_size;
- u8 reserved5[2];
- u8 mtt_base_addr_h;
- __be32 mtt_base_addr_l;
- __be32 last_notified_index;
- __be32 solicit_producer_index;
- __be32 consumer_index;
- __be32 producer_index;
- u32 reserved6[2];
- __be64 db_rec_addr;
-};
-
#define MLX4_CQ_STATUS_OK ( 0 << 28)
#define MLX4_CQ_STATUS_OVERFLOW ( 9 << 28)
#define MLX4_CQ_STATUS_WRITE_FAIL (10 << 28)
@@ -121,6 +99,13 @@ static int mlx4_SW2HW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
MLX4_CMD_TIME_CLASS_A);
}
+static int mlx4_MODIFY_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
+ int cq_num, u32 opmod)
+{
+ return mlx4_cmd(dev, mailbox->dma, cq_num, opmod, MLX4_CMD_MODIFY_CQ,
+ MLX4_CMD_TIME_CLASS_A);
+}
+
static int mlx4_HW2SW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
int cq_num)
{
@@ -206,6 +191,24 @@ err_out:
}
EXPORT_SYMBOL_GPL(mlx4_cq_alloc);
+int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
+ struct mlx4_cq_context *context, int modify)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ memcpy(mailbox->buf, context, sizeof *context);
+ err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, modify);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_cq_modify);
+
void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq)
{
struct mlx4_priv *priv = mlx4_priv(dev);
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 7d1eaa9..77323a7 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -81,7 +81,7 @@ enum {
MLX4_CMD_SW2HW_CQ = 0x16,
MLX4_CMD_HW2SW_CQ = 0x17,
MLX4_CMD_QUERY_CQ = 0x18,
- MLX4_CMD_RESIZE_CQ = 0x2c,
+ MLX4_CMD_MODIFY_CQ = 0x2c,
/* SRQ commands */
MLX4_CMD_SW2HW_SRQ = 0x35,
diff --git a/include/linux/mlx4/cq.h b/include/linux/mlx4/cq.h
index 5fdc859..5d8625e 100644
--- a/include/linux/mlx4/cq.h
+++ b/include/linux/mlx4/cq.h
@@ -38,6 +38,27 @@
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
+struct mlx4_cq_context {
+ __be32 flags;
+ u16 reserved1[3];
+ __be16 page_offset;
+ __be32 logsize_usrpage;
+ u16 cq_period;
+ u16 cq_max_count;
+ u8 reserved4[3];
+ u8 comp_eqn;
+ u8 log_page_size;
+ u8 reserved5[2];
+ u8 mtt_base_addr_h;
+ __be32 mtt_base_addr_l;
+ __be32 last_notified_index;
+ __be32 solicit_producer_index;
+ __be32 consumer_index;
+ __be32 producer_index;
+ u32 reserved6[2];
+ __be64 db_rec_addr;
+};
+
struct mlx4_cqe {
__be32 my_qpn;
__be32 immed_rss_invalid;
@@ -120,4 +141,8 @@ enum {
MLX4_CQ_DB_REQ_NOT = 2 << 24
};
+
+int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
+ struct mlx4_cq_context *context, int resize);
+
#endif /* MLX4_CQ_H */
--
1.5.3.8
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