From 513ea833c20109d475b4ace9e6a18f6c0c25de4c Mon Sep 17 00:00:00 2001 From: Michal Wajdeczko Date: Tue, 11 Jun 2024 18:35:37 +0200 Subject: [PATCH] drm/xe/vf: Ignore force-wake requests if VF The control and ack force-wake registers are not accessible for the VF drivers. To avoid changing existing code logic that tracks woken domains, simply ignore all attempts to access control or ack registers if we are running as a VF driver. Signed-off-by: Michal Wajdeczko Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20240611163537.1944-6-michal.wajdeczko@intel.com --- drivers/gpu/drm/xe/xe_force_wake.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_force_wake.c b/drivers/gpu/drm/xe/xe_force_wake.c index 468aabd72d6b..5db6926120c3 100644 --- a/drivers/gpu/drm/xe/xe_force_wake.c +++ b/drivers/gpu/drm/xe/xe_force_wake.c @@ -12,6 +12,7 @@ #include "xe_gt.h" #include "xe_gt_printk.h" #include "xe_mmio.h" +#include "xe_sriov.h" #define XE_FORCE_WAKE_ACK_TIMEOUT_MS 50 @@ -96,6 +97,9 @@ void xe_force_wake_init_engines(struct xe_gt *gt, struct xe_force_wake *fw) static void __domain_ctl(struct xe_gt *gt, struct xe_force_wake_domain *domain, bool wake) { + if (IS_SRIOV(gt_to_xe(gt))) + return; + xe_mmio_write32(gt, domain->reg_ctl, domain->mask | (wake ? domain->val : 0)); } @@ -104,6 +108,9 @@ static int __domain_wait(struct xe_gt *gt, struct xe_force_wake_domain *domain, u32 value; int ret; + if (IS_SRIOV(gt_to_xe(gt))) + return 0; + ret = xe_mmio_wait32(gt, domain->reg_ack, domain->val, wake ? domain->val : 0, XE_FORCE_WAKE_ACK_TIMEOUT_MS * USEC_PER_MSEC, &value, true);