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drm/xe/vf: Don't support gtidle if VF

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VF drivers can't access any of gtidle control registers as this
functionality is owned by the PF driver.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240619214557.905-7-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2024-06-19 23:45:54 +02:00
parent 5aa326f528
commit ecab82af27
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/xe/xe_gt_idle.c
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@ -15,6 +15,7 @@
#include "xe_macros.h"
#include "xe_mmio.h"
#include "xe_pm.h"
#include "xe_sriov.h"
/**
* DOC: Xe GT Idle
@ -100,6 +101,9 @@ void xe_gt_idle_enable_pg(struct xe_gt *gt)
u32 pg_enable;
int i, j;
if (IS_SRIOV_VF(xe))
return;
/* Disable CPG for PVC */
if (xe->info.platform == XE_PVC)
return;
@ -130,6 +134,9 @@ void xe_gt_idle_enable_pg(struct xe_gt *gt)
void xe_gt_idle_disable_pg(struct xe_gt *gt)
{
if (IS_SRIOV_VF(gt_to_xe(gt)))
return;
xe_device_assert_mem_access(gt_to_xe(gt));
XE_WARN_ON(xe_force_wake_get(gt_to_fw(gt), XE_FW_GT));
@ -214,6 +221,9 @@ int xe_gt_idle_init(struct xe_gt_idle *gtidle)
struct kobject *kobj;
int err;
if (IS_SRIOV_VF(xe))
return 0;
kobj = kobject_create_and_add("gtidle", gt->sysfs);
if (!kobj)
return -ENOMEM;
@ -246,6 +256,9 @@ void xe_gt_idle_enable_c6(struct xe_gt *gt)
xe_device_assert_mem_access(gt_to_xe(gt));
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
if (IS_SRIOV_VF(gt_to_xe(gt)))
return;
/* Units of 1280 ns for a total of 5s */
xe_mmio_write32(gt, RC_IDLE_HYSTERSIS, 0x3B9ACA);
/* Enable RC6 */
@ -258,6 +271,9 @@ void xe_gt_idle_disable_c6(struct xe_gt *gt)
xe_device_assert_mem_access(gt_to_xe(gt));
xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GT);
if (IS_SRIOV_VF(gt_to_xe(gt)))
return;
xe_mmio_write32(gt, RC_CONTROL, 0);
xe_mmio_write32(gt, RC_STATE, 0);
}