From 5cef84939723f96352d7087b0ea596a65fb972c6 Mon Sep 17 00:00:00 2001 From: Michal Wajdeczko Date: Thu, 23 May 2024 21:22:40 +0200 Subject: [PATCH] drm/xe/vf: Treat GMDID as another runtime register While the GMDID registers are not part of the runtime register list shared by the PF driver, we may still return cached values from our VF specific read32() helper function. Signed-off-by: Michal Wajdeczko Reviewed-by: Matt Roper Link: https://patchwork.freedesktop.org/patch/msgid/20240523192240.844-7-michal.wajdeczko@intel.com --- drivers/gpu/drm/xe/xe_gt_sriov_vf.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c index 347ab7060588..66069eb8c5be 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c @@ -13,6 +13,7 @@ #include "abi/guc_communication_mmio_abi.h" #include "abi/guc_klvs_abi.h" #include "abi/guc_relay_actions_abi.h" +#include "regs/xe_gt_regs.h" #include "xe_assert.h" #include "xe_device.h" @@ -764,6 +765,12 @@ u32 xe_gt_sriov_vf_read32(struct xe_gt *gt, struct xe_reg reg) xe_gt_assert(gt, gt->sriov.vf.pf_version.major); xe_gt_assert(gt, !reg.vf); + if (reg.addr == GMD_ID.addr) { + xe_gt_sriov_dbg_verbose(gt, "gmdid(%#x) = %#x\n", + addr, gt->sriov.vf.runtime.gmdid); + return gt->sriov.vf.runtime.gmdid; + } + rr = vf_lookup_reg(gt, addr); if (!rr) { xe_gt_WARN(gt, IS_ENABLED(CONFIG_DRM_XE_DEBUG),