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drm/xe/gsc: Update handling of xe_force_wake_get return

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xe_force_wake_get() now returns the reference count-incremented domain
mask. If it fails for individual domains, the return value will always
be 0. However, for XE_FORCEWAKE_ALL, it may return a non-zero value even
in the event of failure. Update the return handling of xe_force_wake_get()
to reflect this behavior, and ensure that the return value is passed as
input to xe_force_wake_put().

v3
- return xe_wakeref_t instead of int in xe_force_wake_get()

v5
- return unsigned int for xe_force_wake_get()
- No need to WARN from caller in case of forcewake get failure.

v7
- Fix commit message

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241014075601.2324382-9-himal.prasad.ghimiray@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Himal Prasad Ghimiray 2024-10-14 13:25:43 +05:30 committed by Rodrigo Vivi
parent 82d9de63ca
commit 21eb4f178d
No known key found for this signature in database
GPG Key ID: FA625F640EEB13CA
2 changed files with 15 additions and 17 deletions
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23
drivers/gpu/drm/xe/xe_gsc.c
View File

@ -261,19 +261,17 @@ static int gsc_upload_and_init(struct xe_gsc *gsc)
{
struct xe_gt *gt = gsc_to_gt(gsc);
struct xe_tile *tile = gt_to_tile(gt);
unsigned int fw_ref;
int ret;
if (XE_WA(tile->primary_gt, 14018094691)) {
ret = xe_force_wake_get(gt_to_fw(tile->primary_gt), XE_FORCEWAKE_ALL);
fw_ref = xe_force_wake_get(gt_to_fw(tile->primary_gt), XE_FORCEWAKE_ALL);
/*
* If the forcewake fails we want to keep going, because the worst
* case outcome in failing to apply the WA is that PXP won't work,
* which is not fatal. We still throw a warning so the issue is
* seen if it happens.
* which is not fatal. Forcewake get warns implicitly in case of failure
*/
xe_gt_WARN_ON(tile->primary_gt, ret);
xe_gt_mcr_multicast_write(tile->primary_gt,
EU_SYSTOLIC_LIC_THROTTLE_CTL_WITH_LOCK,
EU_SYSTOLIC_LIC_THROTTLE_CTL_LOCK_BIT);
@ -282,7 +280,7 @@ static int gsc_upload_and_init(struct xe_gsc *gsc)
ret = gsc_upload(gsc);
if (XE_WA(tile->primary_gt, 14018094691))
xe_force_wake_put(gt_to_fw(tile->primary_gt), XE_FORCEWAKE_ALL);
xe_force_wake_put(gt_to_fw(tile->primary_gt), fw_ref);
if (ret)
return ret;
@ -352,6 +350,7 @@ static void gsc_work(struct work_struct *work)
struct xe_gsc *gsc = container_of(work, typeof(*gsc), work);
struct xe_gt *gt = gsc_to_gt(gsc);
struct xe_device *xe = gt_to_xe(gt);
unsigned int fw_ref;
u32 actions;
int ret;
@ -361,7 +360,7 @@ static void gsc_work(struct work_struct *work)
spin_unlock_irq(&gsc->lock);
xe_pm_runtime_get(xe);
xe_gt_WARN_ON(gt, xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC));
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC);
if (actions & GSC_ACTION_ER_COMPLETE) {
ret = gsc_er_complete(gt);
@ -381,7 +380,7 @@ static void gsc_work(struct work_struct *work)
xe_gsc_proxy_request_handler(gsc);
out:
xe_force_wake_put(gt_to_fw(gt), XE_FW_GSC);
xe_force_wake_put(gt_to_fw(gt), fw_ref);
xe_pm_runtime_put(xe);
}
@ -601,7 +600,7 @@ void xe_gsc_print_info(struct xe_gsc *gsc, struct drm_printer *p)
{
struct xe_gt *gt = gsc_to_gt(gsc);
struct xe_mmio *mmio = &gt->mmio;
int err;
unsigned int fw_ref;
xe_uc_fw_print(&gsc->fw, p);
@ -610,8 +609,8 @@ void xe_gsc_print_info(struct xe_gsc *gsc, struct drm_printer *p)
if (!xe_uc_fw_is_enabled(&gsc->fw))
return;
err = xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC);
if (err)
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC);
if (!fw_ref)
return;
drm_printf(p, "\nHECI1 FWSTS: 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",
@ -622,5 +621,5 @@ void xe_gsc_print_info(struct xe_gsc *gsc, struct drm_printer *p)
xe_mmio_read32(mmio, HECI_FWSTS5(MTL_GSC_HECI1_BASE)),
xe_mmio_read32(mmio, HECI_FWSTS6(MTL_GSC_HECI1_BASE)));
xe_force_wake_put(gt_to_fw(gt), XE_FW_GSC);
xe_force_wake_put(gt_to_fw(gt), fw_ref);
}

9
drivers/gpu/drm/xe/xe_gsc_proxy.c
View File

@ -450,22 +450,21 @@ void xe_gsc_proxy_remove(struct xe_gsc *gsc)
{
struct xe_gt *gt = gsc_to_gt(gsc);
struct xe_device *xe = gt_to_xe(gt);
int err = 0;
unsigned int fw_ref = 0;
if (!gsc->proxy.component_added)
return;
/* disable HECI2 IRQs */
xe_pm_runtime_get(xe);
err = xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC);
if (err)
fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GSC);
if (!fw_ref)
xe_gt_err(gt, "failed to get forcewake to disable GSC interrupts\n");
/* try do disable irq even if forcewake failed */
gsc_proxy_irq_toggle(gsc, false);
if (!err)
xe_force_wake_put(gt_to_fw(gt), XE_FW_GSC);
xe_force_wake_put(gt_to_fw(gt), fw_ref);
xe_pm_runtime_put(xe);
xe_gsc_wait_for_worker_completion(gsc);