diff options
| author | Anshuman Gupta <anshuman.gupta@intel.com> | 2023-07-18 11:07:01 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:37:35 +0300 |
| commit | b2d756199be822f4de8dd18fe4e3a939e4a06e7a (patch) | |
| tree | c87ad4e243f411e1eded7e5afaa5d96820e37b8c /drivers/gpu/drm/xe/xe_pm.c | |
| parent | fddebcbf7a47d661f3eb475de0b75be11c7c3bb8 (diff) | |
| download | linux-b2d756199be822f4de8dd18fe4e3a939e4a06e7a.tar.xz | |
drm/xe/pm: Add vram_d3cold_threshold Sysfs
Add per pci device vram_d3cold_threshold Sysfs to
control the d3cold allowed knob.
Adding a d3cold structure embedded in xe_device to encapsulate
d3cold related stuff.
v2:
- Check total vram before initializing default threshold. [Riana]
- Add static scope to vram_d3cold_threshold DEVICE_ATTR. [Riana]
v3:
- Fixed cosmetics review comment. [Riana]
- Fixed CI Hook failures.
- Used drmm_mutex_init().
v4:
- Fixed kernel-doc warnings.
v5:
- Added doc explaining need for the device sysfs. [Rodrigo]
- Removed TODO comment.
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230718080703.239343-4-anshuman.gupta@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_pm.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pm.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index 03d71dcf2393..261c0ad57b63 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -7,11 +7,13 @@ #include <linux/pm_runtime.h> +#include <drm/drm_managed.h> #include <drm/ttm/ttm_placement.h> #include "xe_bo.h" #include "xe_bo_evict.h" #include "xe_device.h" +#include "xe_device_sysfs.h" #include "xe_ggtt.h" #include "xe_gt.h" #include "xe_irq.h" @@ -137,8 +139,11 @@ void xe_pm_init(struct xe_device *xe) { struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + drmm_mutex_init(&xe->drm, &xe->d3cold.lock); xe_pm_runtime_init(xe); - xe->d3cold_capable = xe_pm_pci_d3cold_capable(pdev); + xe->d3cold.capable = xe_pm_pci_d3cold_capable(pdev); + xe_device_sysfs_init(xe); + xe_pm_set_vram_threshold(xe, DEFAULT_VRAM_THRESHOLD); } void xe_pm_runtime_fini(struct xe_device *xe) @@ -155,7 +160,7 @@ int xe_pm_runtime_suspend(struct xe_device *xe) u8 id; int err; - if (xe->d3cold_allowed) { + if (xe->d3cold.allowed) { if (xe_device_mem_access_ongoing(xe)) return -EBUSY; @@ -181,7 +186,7 @@ int xe_pm_runtime_resume(struct xe_device *xe) u8 id; int err; - if (xe->d3cold_allowed) { + if (xe->d3cold.allowed) { for_each_gt(gt, xe, id) { err = xe_pcode_init(gt); if (err) @@ -202,7 +207,7 @@ int xe_pm_runtime_resume(struct xe_device *xe) for_each_gt(gt, xe, id) xe_gt_resume(gt); - if (xe->d3cold_allowed) { + if (xe->d3cold.allowed) { err = xe_bo_restore_user(xe); if (err) return err; @@ -251,3 +256,27 @@ void xe_pm_assert_unbounded_bridge(struct xe_device *xe) device_set_pm_not_required(&pdev->dev); } } + +int xe_pm_set_vram_threshold(struct xe_device *xe, u32 threshold) +{ + struct ttm_resource_manager *man; + u32 vram_total_mb = 0; + int i; + + for (i = XE_PL_VRAM0; i <= XE_PL_VRAM1; ++i) { + man = ttm_manager_type(&xe->ttm, i); + if (man) + vram_total_mb += DIV_ROUND_UP_ULL(man->size, 1024 * 1024); + } + + drm_dbg(&xe->drm, "Total vram %u mb\n", vram_total_mb); + + if (threshold > vram_total_mb) + return -EINVAL; + + mutex_lock(&xe->d3cold.lock); + xe->d3cold.vram_threshold = threshold; + mutex_unlock(&xe->d3cold.lock); + + return 0; +} |