From: Zou Nan hai Date: Fri, 25 Jun 2010 05:40:23 +0000 (+0800) Subject: drm/i915: Set up a render context on Ironlake X-Git-Tag: v2.6.36-rc2~2^2~14 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=aa40d6bbb9cf88f3fb296a57e046a52e9a68ab72;p=karo-tx-linux.git drm/i915: Set up a render context on Ironlake RC6 power state requires a logical render context in place for saving render context. Signed-off-by: Zou Nan hai Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8df6ac735187..047cd7ce7e1b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -254,6 +254,7 @@ typedef struct drm_i915_private { drm_local_map_t hws_map; struct drm_gem_object *seqno_obj; struct drm_gem_object *pwrctx; + struct drm_gem_object *renderctx; struct resource mch_res; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 21fd657663aa..a63e9a176386 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -181,6 +181,12 @@ #define MI_DISPLAY_FLIP MI_INSTR(0x14, 2) #define MI_DISPLAY_FLIP_I915 MI_INSTR(0x14, 1) #define MI_DISPLAY_FLIP_PLANE(n) ((n) << 20) +#define MI_SET_CONTEXT MI_INSTR(0x18, 0) +#define MI_MM_SPACE_GTT (1<<8) +#define MI_MM_SPACE_PHYSICAL (0<<8) +#define MI_SAVE_EXT_STATE_EN (1<<3) +#define MI_RESTORE_EXT_STATE_EN (1<<2) +#define MI_RESTORE_INHIBIT (1<<0) #define MI_STORE_DWORD_IMM MI_INSTR(0x20, 1) #define MI_MEM_VIRTUAL (1 << 22) /* 965+ only */ #define MI_STORE_DWORD_INDEX MI_INSTR(0x21, 1) @@ -1100,6 +1106,11 @@ #define DDRMPLL1 0X12c20 #define PEG_BAND_GAP_DATA 0x14d68 +/* + * Logical Context regs + */ +#define CCID 0x2180 +#define CCID_EN (1<<0) /* * Overlay regs */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 53f3a98cc1ae..4668e9bf67d8 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5466,37 +5466,37 @@ static const struct drm_mode_config_funcs intel_mode_funcs = { }; static struct drm_gem_object * -intel_alloc_power_context(struct drm_device *dev) +intel_alloc_context_page(struct drm_device *dev) { - struct drm_gem_object *pwrctx; + struct drm_gem_object *ctx; int ret; - pwrctx = i915_gem_alloc_object(dev, 4096); - if (!pwrctx) { + ctx = i915_gem_alloc_object(dev, 4096); + if (!ctx) { DRM_DEBUG("failed to alloc power context, RC6 disabled\n"); return NULL; } mutex_lock(&dev->struct_mutex); - ret = i915_gem_object_pin(pwrctx, 4096); + ret = i915_gem_object_pin(ctx, 4096); if (ret) { DRM_ERROR("failed to pin power context: %d\n", ret); goto err_unref; } - ret = i915_gem_object_set_to_gtt_domain(pwrctx, 1); + ret = i915_gem_object_set_to_gtt_domain(ctx, 1); if (ret) { DRM_ERROR("failed to set-domain on power context: %d\n", ret); goto err_unpin; } mutex_unlock(&dev->struct_mutex); - return pwrctx; + return ctx; err_unpin: - i915_gem_object_unpin(pwrctx); + i915_gem_object_unpin(ctx); err_unref: - drm_gem_object_unreference(pwrctx); + drm_gem_object_unreference(ctx); mutex_unlock(&dev->struct_mutex); return NULL; } @@ -5796,6 +5796,29 @@ void intel_init_clock_gating(struct drm_device *dev) * GPU can automatically power down the render unit if given a page * to save state. */ + if (IS_IRONLAKE_M(dev)) { + if (dev_priv->renderctx == NULL) + dev_priv->renderctx = intel_alloc_context_page(dev); + if (dev_priv->renderctx) { + struct drm_i915_gem_object *obj_priv; + obj_priv = to_intel_bo(dev_priv->renderctx); + if (obj_priv) { + BEGIN_LP_RING(4); + OUT_RING(MI_SET_CONTEXT); + OUT_RING(obj_priv->gtt_offset | + MI_MM_SPACE_GTT | + MI_SAVE_EXT_STATE_EN | + MI_RESTORE_EXT_STATE_EN | + MI_RESTORE_INHIBIT); + OUT_RING(MI_NOOP); + OUT_RING(MI_FLUSH); + ADVANCE_LP_RING(); + } + } else + DRM_DEBUG_KMS("Failed to allocate render context." + "Disable RC6\n"); + } + if (I915_HAS_RC6(dev) && drm_core_check_feature(dev, DRIVER_MODESET)) { struct drm_i915_gem_object *obj_priv = NULL; @@ -5804,7 +5827,7 @@ void intel_init_clock_gating(struct drm_device *dev) } else { struct drm_gem_object *pwrctx; - pwrctx = intel_alloc_power_context(dev); + pwrctx = intel_alloc_context_page(dev); if (pwrctx) { dev_priv->pwrctx = pwrctx; obj_priv = to_intel_bo(pwrctx); @@ -6062,6 +6085,16 @@ void intel_modeset_cleanup(struct drm_device *dev) if (dev_priv->display.disable_fbc) dev_priv->display.disable_fbc(dev); + if (dev_priv->renderctx) { + struct drm_i915_gem_object *obj_priv; + + obj_priv = to_intel_bo(dev_priv->renderctx); + I915_WRITE(CCID, obj_priv->gtt_offset &~ CCID_EN); + I915_READ(CCID); + i915_gem_object_unpin(dev_priv->renderctx); + drm_gem_object_unreference(dev_priv->renderctx); + } + if (dev_priv->pwrctx) { struct drm_i915_gem_object *obj_priv;