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net/mlx4_core: Fixes for VF / Guest startup flow

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- pass the following parameters:
  - firmware version (added QUERY_FW paravirtualization for that)

  - disable Blueflame on slaves. KVM disables write combining on guests,
    and we get better performance without BF in this case. (This requires
    QUERY_DEV_CAP paravirtualization, also in this commit)

  - max qp rdma as destination

- get rid of a chunk of "if (0)" dead code

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jack Morgenstein 2012-05-30 09:14:53 +00:00 committed by David S. Miller
parent 13bf58b760
commit b91cb3ebcd
4 changed files with 63 additions and 14 deletions
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4
drivers/net/ethernet/mellanox/mlx4/cmd.c
View File

@ -617,7 +617,7 @@ static struct mlx4_cmd_info cmd_info[] = {
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
.wrapper = mlx4_QUERY_FW_wrapper
},
{
.opcode = MLX4_CMD_QUERY_HCA,
@ -635,7 +635,7 @@ static struct mlx4_cmd_info cmd_info[] = {
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = NULL
.wrapper = mlx4_QUERY_DEV_CAP_wrapper
},
{
.opcode = MLX4_CMD_QUERY_FUNC_CAP,

46
drivers/net/ethernet/mellanox/mlx4/fw.c
View File

@ -669,6 +669,28 @@ out:
return err;
}
int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
int err = 0;
u8 field;
err = mlx4_cmd_box(dev, 0, outbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
if (err)
return err;
/* For guests, report Blueflame disabled */
MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_BF_OFFSET);
field &= 0x7f;
MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_BF_OFFSET);
return 0;
}
int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
@ -860,6 +882,9 @@ int mlx4_QUERY_FW(struct mlx4_dev *dev)
((fw_ver & 0xffff0000ull) >> 16) |
((fw_ver & 0x0000ffffull) << 16);
if (mlx4_is_slave(dev))
goto out;
MLX4_GET(lg, outbox, QUERY_FW_PPF_ID);
dev->caps.function = lg;
@ -927,6 +952,27 @@ out:
return err;
}
int mlx4_QUERY_FW_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd)
{
u8 *outbuf;
int err;
outbuf = outbox->buf;
err = mlx4_cmd_box(dev, 0, outbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
if (err)
return err;
/* for slaves, zero out everything except FW version */
outbuf[0] = outbuf[1] = 0;
memset(&outbuf[8], 0, QUERY_FW_OUT_SIZE - 8);
return 0;
}
static void get_board_id(void *vsd, char *board_id)
{
int i;

17
drivers/net/ethernet/mellanox/mlx4/main.c
View File

@ -430,12 +430,17 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
memset(&dev_cap, 0, sizeof(dev_cap));
dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
err = mlx4_dev_cap(dev, &dev_cap);
if (err) {
mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
return err;
}
err = mlx4_QUERY_FW(dev);
if (err)
mlx4_err(dev, "QUERY_FW command failed: could not get FW version.\n");
page_size = ~dev->caps.page_size_cap + 1;
mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
if (page_size > PAGE_SIZE) {
@ -499,18 +504,6 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
return -ENODEV;
}
#if 0
mlx4_warn(dev, "sqp_demux:%d\n", dev->caps.sqp_demux);
mlx4_warn(dev, "num_uars:%d reserved_uars:%d uar region:0x%x bar2:0x%llx\n",
dev->caps.num_uars, dev->caps.reserved_uars,
dev->caps.uar_page_size * dev->caps.num_uars,
pci_resource_len(dev->pdev, 2));
mlx4_warn(dev, "num_eqs:%d reserved_eqs:%d\n", dev->caps.num_eqs,
dev->caps.reserved_eqs);
mlx4_warn(dev, "num_pds:%d reserved_pds:%d slave_pd_shift:%d pd_base:%d\n",
dev->caps.num_pds, dev->caps.reserved_pds,
dev->caps.slave_pd_shift, dev->caps.pd_base);
#endif
return 0;
}

10
drivers/net/ethernet/mellanox/mlx4/mlx4.h
View File

@ -1039,6 +1039,11 @@ int mlx4_init_resource_tracker(struct mlx4_dev *dev);
void mlx4_free_resource_tracker(struct mlx4_dev *dev,
enum mlx4_res_tracker_free_type type);
int mlx4_QUERY_FW_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
@ -1054,6 +1059,11 @@ int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,
struct mlx4_cmd_mailbox *outbox,
struct mlx4_cmd_info *cmd);
int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave,
struct mlx4_vhcr *vhcr,
struct mlx4_cmd_mailbox *inbox,