diff options
Diffstat (limited to 'drivers/net/mlx4/cq.c')
| -rw-r--r-- | drivers/net/mlx4/cq.c | 72 |
1 files changed, 65 insertions, 7 deletions
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c index d4441fee3d8..6fda0af9d0a 100644 --- a/drivers/net/mlx4/cq.c +++ b/drivers/net/mlx4/cq.c @@ -38,6 +38,7 @@ #include <linux/hardirq.h> #include <linux/mlx4/cmd.h> +#include <linux/mlx4/cq.h> #include "mlx4.h" #include "icm.h" @@ -47,21 +48,19 @@ struct mlx4_cq_context { u16 reserved1[3]; __be16 page_offset; __be32 logsize_usrpage; - u8 reserved2; - u8 cq_period; - u8 reserved3; - u8 cq_max_count; - u8 reserved4[3]; + __be16 cq_period; + __be16 cq_max_count; + u8 reserved2[3]; u8 comp_eqn; u8 log_page_size; - u8 reserved5[2]; + u8 reserved3[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]; + u32 reserved4[2]; __be64 db_rec_addr; }; @@ -121,6 +120,13 @@ 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) { @@ -129,6 +135,58 @@ static int mlx4_HW2SW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, MLX4_CMD_TIME_CLASS_A); } +int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq, + u16 count, u16 period) +{ + struct mlx4_cmd_mailbox *mailbox; + struct mlx4_cq_context *cq_context; + int err; + + mailbox = mlx4_alloc_cmd_mailbox(dev); + if (IS_ERR(mailbox)) + return PTR_ERR(mailbox); + + cq_context = mailbox->buf; + memset(cq_context, 0, sizeof *cq_context); + + cq_context->cq_max_count = cpu_to_be16(count); + cq_context->cq_period = cpu_to_be16(period); + + err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 1); + + mlx4_free_cmd_mailbox(dev, mailbox); + return err; +} +EXPORT_SYMBOL_GPL(mlx4_cq_modify); + +int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, + int entries, struct mlx4_mtt *mtt) +{ + struct mlx4_cmd_mailbox *mailbox; + struct mlx4_cq_context *cq_context; + u64 mtt_addr; + int err; + + mailbox = mlx4_alloc_cmd_mailbox(dev); + if (IS_ERR(mailbox)) + return PTR_ERR(mailbox); + + cq_context = mailbox->buf; + memset(cq_context, 0, sizeof *cq_context); + + cq_context->logsize_usrpage = cpu_to_be32(ilog2(entries) << 24); + cq_context->log_page_size = mtt->page_shift - 12; + mtt_addr = mlx4_mtt_addr(dev, mtt); + cq_context->mtt_base_addr_h = mtt_addr >> 32; + cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); + + err = mlx4_MODIFY_CQ(dev, mailbox, cq->cqn, 0); + + mlx4_free_cmd_mailbox(dev, mailbox); + return err; +} +EXPORT_SYMBOL_GPL(mlx4_cq_resize); + int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt, struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq) { |