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drm/i915/guc: Add host2guc notification for suspend and resume 

Add host2guc interface to notify GuC power state changes when
enter or resume from power saving state.

v3: Move intel_guc_suspend to i915_drm_suspend for consistency.

v2: Add GuC suspend/resume to runtime suspend/resume too

v1: Change to a more flexible way when fill host to GuC scratch
data in order to remove hard coding.

Signed-off-by: Alex Dai <yu.dai@intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Alex Dai 2015-09-30 09:46:37 -07:00 committed by Daniel Vetter
parent 3be60de9e9
commit a1c4199414
5 changed files with 71 additions and 1 deletions
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8
drivers/gpu/drm/i915/i915_drv.c
View File

@ -638,6 +638,8 @@ static int i915_drm_suspend(struct drm_device *dev)
return error;
}
intel_guc_suspend(dev);
intel_suspend_gt_powersave(dev);
/*
@ -767,6 +769,8 @@ static int i915_drm_resume(struct drm_device *dev)
}
mutex_unlock(&dev->struct_mutex);
intel_guc_resume(dev);
intel_modeset_init_hw(dev);
spin_lock_irq(&dev_priv->irq_lock);
@ -1500,6 +1504,8 @@ static int intel_runtime_suspend(struct device *device)
i915_gem_release_all_mmaps(dev_priv);
mutex_unlock(&dev->struct_mutex);
intel_guc_suspend(dev);
intel_suspend_gt_powersave(dev);
intel_runtime_pm_disable_interrupts(dev_priv);
@ -1559,6 +1565,8 @@ static int intel_runtime_resume(struct device *device)
intel_opregion_notify_adapter(dev, PCI_D0);
dev_priv->pm.suspended = false;
intel_guc_resume(dev);
if (IS_GEN6(dev_priv))
intel_init_pch_refclk(dev);

50
drivers/gpu/drm/i915/i915_guc_submission.c
View File

@ -923,3 +923,53 @@ void i915_guc_submission_fini(struct drm_device *dev)
gem_release_guc_obj(guc->ctx_pool_obj);
guc->ctx_pool_obj = NULL;
}
/**
* intel_guc_suspend() - notify GuC entering suspend state
* @dev: drm device
*/
int intel_guc_suspend(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_guc *guc = &dev_priv->guc;
struct intel_context *ctx;
u32 data[3];
if (!i915.enable_guc_submission)
return 0;
ctx = dev_priv->ring[RCS].default_context;
data[0] = HOST2GUC_ACTION_ENTER_S_STATE;
/* any value greater than GUC_POWER_D0 */
data[1] = GUC_POWER_D1;
/* first page is shared data with GuC */
data[2] = i915_gem_obj_ggtt_offset(ctx->engine[RCS].state);
return host2guc_action(guc, data, ARRAY_SIZE(data));
}
/**
* intel_guc_resume() - notify GuC resuming from suspend state
* @dev: drm device
*/
int intel_guc_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_guc *guc = &dev_priv->guc;
struct intel_context *ctx;
u32 data[3];
if (!i915.enable_guc_submission)
return 0;
ctx = dev_priv->ring[RCS].default_context;
data[0] = HOST2GUC_ACTION_EXIT_S_STATE;
data[1] = GUC_POWER_D0;
/* first page is shared data with GuC */
data[2] = i915_gem_obj_ggtt_offset(ctx->engine[RCS].state);
return host2guc_action(guc, data, ARRAY_SIZE(data));
}

2
drivers/gpu/drm/i915/intel_guc.h
View File

@ -110,6 +110,8 @@ extern void intel_guc_ucode_init(struct drm_device *dev);
extern int intel_guc_ucode_load(struct drm_device *dev);
extern void intel_guc_ucode_fini(struct drm_device *dev);
extern const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status);
extern int intel_guc_suspend(struct drm_device *dev);
extern int intel_guc_resume(struct drm_device *dev);
/* i915_guc_submission.c */
int i915_guc_submission_init(struct drm_device *dev);

8
drivers/gpu/drm/i915/intel_guc_fwif.h
View File

@ -221,12 +221,20 @@ struct guc_context_desc {
#define GUC_FORCEWAKE_RENDER (1 << 0)
#define GUC_FORCEWAKE_MEDIA (1 << 1)
#define GUC_POWER_UNSPECIFIED 0
#define GUC_POWER_D0 1
#define GUC_POWER_D1 2
#define GUC_POWER_D2 3
#define GUC_POWER_D3 4
/* This Action will be programmed in C180 - SOFT_SCRATCH_O_REG */
enum host2guc_action {
HOST2GUC_ACTION_DEFAULT = 0x0,
HOST2GUC_ACTION_SAMPLE_FORCEWAKE = 0x6,
HOST2GUC_ACTION_ALLOCATE_DOORBELL = 0x10,
HOST2GUC_ACTION_DEALLOCATE_DOORBELL = 0x20,
HOST2GUC_ACTION_ENTER_S_STATE = 0x501,
HOST2GUC_ACTION_EXIT_S_STATE = 0x502,
HOST2GUC_ACTION_SLPC_REQUEST = 0x3003,
HOST2GUC_ACTION_LIMIT
};

4
drivers/gpu/drm/i915/intel_guc_loader.c
View File

@ -383,7 +383,6 @@ int intel_guc_ucode_load(struct drm_device *dev)
intel_guc_fw_status_repr(guc_fw->guc_fw_load_status));
direct_interrupts_to_host(dev_priv);
i915_guc_submission_disable(dev);
if (guc_fw->guc_fw_fetch_status == GUC_FIRMWARE_NONE)
return 0;
@ -433,6 +432,9 @@ int intel_guc_ucode_load(struct drm_device *dev)
intel_guc_fw_status_repr(guc_fw->guc_fw_load_status));
if (i915.enable_guc_submission) {
/* The execbuf_client will be recreated. Release it first. */
i915_guc_submission_disable(dev);
err = i915_guc_submission_enable(dev);
if (err)
goto fail;