From 62c1bff593b7e30041d0273b835af9fd6f5ee737 Mon Sep 17 00:00:00 2001 From: Souradeep Chakrabarti Date: Wed, 2 Aug 2023 04:07:40 -0700 Subject: net: mana: Configure hwc timeout from hardware At present hwc timeout value is a fixed value. This patch sets the hwc timeout from the hardware. It now uses a new hardware capability GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG to query and set the value in hwc_timeout. Signed-off-by: Souradeep Chakrabarti Reviewed-by: Jesse Brandeburg Signed-off-by: David S. Miller --- drivers/net/ethernet/microsoft/mana/gdma_main.c | 30 ++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) (limited to 'drivers/net/ethernet/microsoft/mana/gdma_main.c') diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 3765d3389a9a..6367de0c2c2e 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -106,6 +106,25 @@ static int mana_gd_query_max_resources(struct pci_dev *pdev) return 0; } +static int mana_gd_query_hwc_timeout(struct pci_dev *pdev, u32 *timeout_val) +{ + struct gdma_context *gc = pci_get_drvdata(pdev); + struct gdma_query_hwc_timeout_resp resp = {}; + struct gdma_query_hwc_timeout_req req = {}; + int err; + + mana_gd_init_req_hdr(&req.hdr, GDMA_QUERY_HWC_TIMEOUT, + sizeof(req), sizeof(resp)); + req.timeout_ms = *timeout_val; + err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp); + if (err || resp.hdr.status) + return err ? err : -EPROTO; + + *timeout_val = resp.timeout_ms; + + return 0; +} + static int mana_gd_detect_devices(struct pci_dev *pdev) { struct gdma_context *gc = pci_get_drvdata(pdev); @@ -882,8 +901,10 @@ int mana_gd_verify_vf_version(struct pci_dev *pdev) struct gdma_context *gc = pci_get_drvdata(pdev); struct gdma_verify_ver_resp resp = {}; struct gdma_verify_ver_req req = {}; + struct hw_channel_context *hwc; int err; + hwc = gc->hwc.driver_data; mana_gd_init_req_hdr(&req.hdr, GDMA_VERIFY_VF_DRIVER_VERSION, sizeof(req), sizeof(resp)); @@ -910,7 +931,14 @@ int mana_gd_verify_vf_version(struct pci_dev *pdev) err, resp.hdr.status); return err ? err : -EPROTO; } - + if (resp.pf_cap_flags1 & GDMA_DRV_CAP_FLAG_1_HWC_TIMEOUT_RECONFIG) { + err = mana_gd_query_hwc_timeout(pdev, &hwc->hwc_timeout); + if (err) { + dev_err(gc->dev, "Failed to set the hwc timeout %d\n", err); + return err; + } + dev_dbg(gc->dev, "set the hwc timeout to %u\n", hwc->hwc_timeout); + } return 0; } -- cgit v1.2.3-70-g09d2