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Thu, 4 Sep 2025 06:01:55 +0000 Message-ID: <61bc513c-f1ea-4f2a-8ab1-c6a34389f4fd@intel.com> Date: Thu, 4 Sep 2025 11:31:46 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [v4,10/11] drm/xe/vrsr: Enable VRSR Content-Language: en-GB To: "Nilawar, Badal" , , , CC: , , , , , , , , , References: <20250529111654.3140766-11-badal.nilawar@intel.com> From: "Poosa, Karthik" In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: MA0PR01CA0012.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a01:80::11) To CH0PR11MB5249.namprd11.prod.outlook.com (2603:10b6:610:e0::17) Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH0PR11MB5249:EE_|PH3PPF383C22AA3:EE_ X-MS-Office365-Filtering-Correlation-Id: d88aa80c-2714-4d99-6d1c-08ddeb788c91 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|376014; 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Okay > > Thanks, > Badal > >> >>> Also fix couple of typo in xe_pm.c. >>> >>> Signed-off-by: Anshuman Gupta >>> Signed-off-by: Badal Nilawar >>> --- >>>   drivers/gpu/drm/xe/xe_pci.c |  4 ++-- >>>   drivers/gpu/drm/xe/xe_pm.c  | 46 >>> +++++++++++++++++++++++++++---------- >>>   2 files changed, 36 insertions(+), 14 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c >>> index 5ae1df345416..fdf878594fb0 100644 >>> --- a/drivers/gpu/drm/xe/xe_pci.c >>> +++ b/drivers/gpu/drm/xe/xe_pci.c >>> @@ -926,7 +926,7 @@ static int xe_pci_suspend(struct device *dev) >>>         /* >>>        * Enabling D3Cold is needed for S2Idle/S0ix. >>> -     * It is save to allow here since xe_pm_suspend has evicted >>> +     * It is safe to allow here since xe_pm_suspend has evicted >>>        * the local memory and the direct complete optimization is >>> disabled. >>>        */ >>>       d3cold_toggle(pdev, D3COLD_ENABLE); >>> @@ -943,7 +943,7 @@ static int xe_pci_resume(struct device *dev) >>>       struct pci_dev *pdev = to_pci_dev(dev); >>>       int err; >>>   -    /* Give back the D3Cold decision to the runtime P M*/ >>> +    /* Give back the D3Cold decision to the runtime PM */ >>>       d3cold_toggle(pdev, D3COLD_DISABLE); >>>         err = pci_set_power_state(pdev, PCI_D0); >>> diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c >>> index 1e061bfc3e52..19596d467298 100644 >>> --- a/drivers/gpu/drm/xe/xe_pm.c >>> +++ b/drivers/gpu/drm/xe/xe_pm.c >>> @@ -147,10 +147,12 @@ int xe_pm_suspend(struct xe_device *xe) >>>         xe_display_pm_suspend(xe); >>>   -    /* FIXME: Super racey... */ >>> -    err = xe_bo_evict_all(xe); >>> -    if (err) >>> -        goto err_pxp; >>> +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>> +        /* FIXME: Super racey... */ >>> +        err = xe_bo_evict_all(xe); >>> +        if (err) >>> +            goto err_pxp; >>> +    } >>>         for_each_gt(gt, xe, id) { >>>           err = xe_gt_suspend(gt); >>> @@ -162,6 +164,12 @@ int xe_pm_suspend(struct xe_device *xe) >>>         xe_display_pm_suspend_late(xe); >>>   +    if (xe->d3cold.target_state == XE_D3COLD_VRSR) { >>> +        err = xe_pm_vrsr_enable(xe, true); >>> +            if (err) >>> +                goto err_display; >>> +    } >>> + >>>       drm_dbg(&xe->drm, "Device suspended\n"); >>>       return 0; >>>   @@ -203,9 +211,11 @@ int xe_pm_resume(struct xe_device *xe) >>>        * This only restores pinned memory which is the memory >>> required for the >>>        * GT(s) to resume. >>>        */ >>> -    err = xe_bo_restore_early(xe); >>> -    if (err) >>> -        goto err; >>> +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>> +        err = xe_bo_restore_early(xe); >>> +        if (err) >>> +            goto err; >>> +    } >>>         xe_irq_resume(xe); >>>   @@ -214,9 +224,11 @@ int xe_pm_resume(struct xe_device *xe) >>>         xe_display_pm_resume(xe); >>>   -    err = xe_bo_restore_late(xe); >>> -    if (err) >>> -        goto err; >>> +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>> +        err = xe_bo_restore_late(xe); >>> +        if (err) >>> +            goto err; >>> +    } >>>         xe_pxp_pm_resume(xe->pxp); >>>   @@ -616,7 +628,7 @@ int xe_pm_runtime_suspend(struct xe_device *xe) >>>         xe_display_pm_runtime_suspend(xe); >>>   -    if (xe->d3cold.target_state) { >>> +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>>           err = xe_bo_evict_all(xe); >>>           if (err) >>>               goto out_resume; >>> @@ -632,6 +644,14 @@ int xe_pm_runtime_suspend(struct xe_device *xe) >>>         xe_display_pm_runtime_suspend_late(xe); >>>   +    if (xe->d3cold.target_state == XE_D3COLD_VRSR) { >>> +        err = xe_pm_vrsr_enable(xe, true); >>> +            if (err) { >>> +                drm_err(&xe->drm, "Failed to enable VRSR: %d\n", err); >>> +                goto out_resume; >>> +            } >>> +    } >>> + >>>       xe_rpm_lockmap_release(xe); >>>       xe_pm_write_callback_task(xe, NULL); >>>       return 0; >>> @@ -669,7 +689,9 @@ int xe_pm_runtime_resume(struct xe_device *xe) >>>               goto out; >>>             xe_display_pm_resume_early(xe); >>> +    } >>>   +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>>           /* >>>            * This only restores pinned memory which is the memory >>>            * required for the GT(s) to resume. >>> @@ -686,7 +708,7 @@ int xe_pm_runtime_resume(struct xe_device *xe) >>>         xe_display_pm_runtime_resume(xe); >>>   -    if (xe->d3cold.target_state) { >>> +    if (xe->d3cold.target_state == XE_D3COLD_OFF) { >>>           err = xe_bo_restore_late(xe); >>>           if (err) >>>               goto out; >> >> Please rephrase commit message. Other than that, code code flow looks >> fine. >> >> Acked-by: Karthik Poosa >>