diff options
| author | David Awogbemila <awogbemila@google.com> | 2020-09-11 10:38:51 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-11 14:31:54 -0700 |
| commit | 7e074d5a76caffac4da8acdd65e0d1144a347e45 (patch) | |
| tree | 6d0e593a6395c2067631528fc0df729787584695 /drivers/net/ethernet/google/gve/gve_adminq.c | |
| parent | 3b7cc73628ff7a545c3ae0762706d2039a1a6446 (diff) | |
gve: Enable Link Speed Reporting in the driver.
This change allows the driver to report the device link speed
when the ethtool command:
ethtool <nic name>
is run.
Getting the link speed is done via a new admin queue command:
ReportLinkSpeed.
Reviewed-by: Yangchun Fu <yangchun@google.com>
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_adminq.c')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_adminq.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c index 6f5ccd591c3d..24ae6a28a806 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.c +++ b/drivers/net/ethernet/google/gve/gve_adminq.c @@ -36,6 +36,7 @@ int gve_adminq_alloc(struct device *dev, struct gve_priv *priv) priv->adminq_dcfg_device_resources_cnt = 0; priv->adminq_set_driver_parameter_cnt = 0; priv->adminq_report_stats_cnt = 0; + priv->adminq_report_link_speed_cnt = 0; /* Setup Admin queue with the device */ iowrite32be(priv->adminq_bus_addr / PAGE_SIZE, @@ -238,6 +239,9 @@ static int gve_adminq_issue_cmd(struct gve_priv *priv, case GVE_ADMINQ_REPORT_STATS: priv->adminq_report_stats_cnt++; break; + case GVE_ADMINQ_REPORT_LINK_SPEED: + priv->adminq_report_link_speed_cnt++; + break; default: dev_err(&priv->pdev->dev, "unknown AQ command opcode %d\n", opcode); } @@ -595,3 +599,30 @@ int gve_adminq_report_stats(struct gve_priv *priv, u64 stats_report_len, return gve_adminq_execute_cmd(priv, &cmd); } + +int gve_adminq_report_link_speed(struct gve_priv *priv) +{ + union gve_adminq_command gvnic_cmd; + dma_addr_t link_speed_region_bus; + __be64 *link_speed_region; + int err; + + link_speed_region = + dma_alloc_coherent(&priv->pdev->dev, sizeof(*link_speed_region), + &link_speed_region_bus, GFP_KERNEL); + + if (!link_speed_region) + return -ENOMEM; + + memset(&gvnic_cmd, 0, sizeof(gvnic_cmd)); + gvnic_cmd.opcode = cpu_to_be32(GVE_ADMINQ_REPORT_LINK_SPEED); + gvnic_cmd.report_link_speed.link_speed_address = + cpu_to_be64(link_speed_region_bus); + + err = gve_adminq_execute_cmd(priv, &gvnic_cmd); + + priv->link_speed = be64_to_cpu(*link_speed_region); + dma_free_coherent(&priv->pdev->dev, sizeof(*link_speed_region), link_speed_region, + link_speed_region_bus); + return err; +} |