diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 242 |
1 files changed, 177 insertions, 65 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 1a46787129e7..68e0c85a17cf 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -36,6 +36,7 @@ #include "intel_drv.h" #include <drm/i915_drm.h> #include "i915_drv.h" +#include "i915_vgpu.h" #include "i915_trace.h" #include <linux/pci.h> #include <linux/console.h> @@ -67,6 +68,9 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_CHIPSET_ID: value = dev->pdev->device; break; + case I915_PARAM_REVISION: + value = dev->pdev->revision; + break; case I915_PARAM_HAS_GEM: value = 1; break; @@ -149,6 +153,16 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_MMAP_VERSION: value = 1; break; + case I915_PARAM_SUBSLICE_TOTAL: + value = INTEL_INFO(dev)->subslice_total; + if (!value) + return -ENODEV; + break; + case I915_PARAM_EU_TOTAL: + value = INTEL_INFO(dev)->eu_total; + if (!value) + return -ENODEV; + break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; @@ -605,16 +619,128 @@ static void intel_device_info_runtime_init(struct drm_device *dev) } } + /* Initialize slice/subslice/EU info */ if (IS_CHERRYVIEW(dev)) { - u32 fuse, mask_eu; + u32 fuse, eu_dis; fuse = I915_READ(CHV_FUSE_GT); - mask_eu = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK | - CHV_FGT_EU_DIS_SS0_R1_MASK | - CHV_FGT_EU_DIS_SS1_R0_MASK | - CHV_FGT_EU_DIS_SS1_R1_MASK); - info->eu_total = 16 - hweight32(mask_eu); + + info->slice_total = 1; + + if (!(fuse & CHV_FGT_DISABLE_SS0)) { + info->subslice_per_slice++; + eu_dis = fuse & (CHV_FGT_EU_DIS_SS0_R0_MASK | + CHV_FGT_EU_DIS_SS0_R1_MASK); + info->eu_total += 8 - hweight32(eu_dis); + } + + if (!(fuse & CHV_FGT_DISABLE_SS1)) { + info->subslice_per_slice++; + eu_dis = fuse & (CHV_FGT_EU_DIS_SS1_R0_MASK | + CHV_FGT_EU_DIS_SS1_R1_MASK); + info->eu_total += 8 - hweight32(eu_dis); + } + + info->subslice_total = info->subslice_per_slice; + /* + * CHV expected to always have a uniform distribution of EU + * across subslices. + */ + info->eu_per_subslice = info->subslice_total ? + info->eu_total / info->subslice_total : + 0; + /* + * CHV supports subslice power gating on devices with more than + * one subslice, and supports EU power gating on devices with + * more than one EU pair per subslice. + */ + info->has_slice_pg = 0; + info->has_subslice_pg = (info->subslice_total > 1); + info->has_eu_pg = (info->eu_per_subslice > 2); + } else if (IS_SKYLAKE(dev)) { + const int s_max = 3, ss_max = 4, eu_max = 8; + int s, ss; + u32 fuse2, eu_disable[s_max], s_enable, ss_disable; + + fuse2 = I915_READ(GEN8_FUSE2); + s_enable = (fuse2 & GEN8_F2_S_ENA_MASK) >> + GEN8_F2_S_ENA_SHIFT; + ss_disable = (fuse2 & GEN9_F2_SS_DIS_MASK) >> + GEN9_F2_SS_DIS_SHIFT; + + eu_disable[0] = I915_READ(GEN8_EU_DISABLE0); + eu_disable[1] = I915_READ(GEN8_EU_DISABLE1); + eu_disable[2] = I915_READ(GEN8_EU_DISABLE2); + + info->slice_total = hweight32(s_enable); + /* + * The subslice disable field is global, i.e. it applies + * to each of the enabled slices. + */ + info->subslice_per_slice = ss_max - hweight32(ss_disable); + info->subslice_total = info->slice_total * + info->subslice_per_slice; + + /* + * Iterate through enabled slices and subslices to + * count the total enabled EU. + */ + for (s = 0; s < s_max; s++) { + if (!(s_enable & (0x1 << s))) + /* skip disabled slice */ + continue; + + for (ss = 0; ss < ss_max; ss++) { + u32 n_disabled; + + if (ss_disable & (0x1 << ss)) + /* skip disabled subslice */ + continue; + + n_disabled = hweight8(eu_disable[s] >> + (ss * eu_max)); + + /* + * Record which subslice(s) has(have) 7 EUs. we + * can tune the hash used to spread work among + * subslices if they are unbalanced. + */ + if (eu_max - n_disabled == 7) + info->subslice_7eu[s] |= 1 << ss; + + info->eu_total += eu_max - n_disabled; + } + } + + /* + * SKL is expected to always have a uniform distribution + * of EU across subslices with the exception that any one + * EU in any one subslice may be fused off for die + * recovery. + */ + info->eu_per_subslice = info->subslice_total ? + DIV_ROUND_UP(info->eu_total, + info->subslice_total) : 0; + /* + * SKL supports slice power gating on devices with more than + * one slice, and supports EU power gating on devices with + * more than one EU pair per subslice. + */ + info->has_slice_pg = (info->slice_total > 1) ? 1 : 0; + info->has_subslice_pg = 0; + info->has_eu_pg = (info->eu_per_subslice > 2) ? 1 : 0; } + DRM_DEBUG_DRIVER("slice total: %u\n", info->slice_total); + DRM_DEBUG_DRIVER("subslice total: %u\n", info->subslice_total); + DRM_DEBUG_DRIVER("subslice per slice: %u\n", info->subslice_per_slice); + DRM_DEBUG_DRIVER("EU total: %u\n", info->eu_total); + DRM_DEBUG_DRIVER("EU per subslice: %u\n", info->eu_per_subslice); + DRM_DEBUG_DRIVER("has slice power gating: %s\n", + info->has_slice_pg ? "y" : "n"); + DRM_DEBUG_DRIVER("has subslice power gating: %s\n", + info->has_subslice_pg ? "y" : "n"); + DRM_DEBUG_DRIVER("has EU power gating: %s\n", + info->has_eu_pg ? "y" : "n"); } /** @@ -637,17 +763,6 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) info = (struct intel_device_info *) flags; - /* Refuse to load on gen6+ without kms enabled. */ - if (info->gen >= 6 && !drm_core_check_feature(dev, DRIVER_MODESET)) { - DRM_INFO("Your hardware requires kernel modesetting (KMS)\n"); - DRM_INFO("See CONFIG_DRM_I915_KMS, nomodeset, and i915.modeset parameters\n"); - return -ENODEV; - } - - /* UMS needs agp support. */ - if (!drm_core_check_feature(dev, DRIVER_MODESET) && !dev->agp) - return -EINVAL; - dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); if (dev_priv == NULL) return -ENOMEM; @@ -717,20 +832,18 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) if (ret) goto out_regs; - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - /* WARNING: Apparently we must kick fbdev drivers before vgacon, - * otherwise the vga fbdev driver falls over. */ - ret = i915_kick_out_firmware_fb(dev_priv); - if (ret) { - DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); - goto out_gtt; - } + /* WARNING: Apparently we must kick fbdev drivers before vgacon, + * otherwise the vga fbdev driver falls over. */ + ret = i915_kick_out_firmware_fb(dev_priv); + if (ret) { + DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); + goto out_gtt; + } - ret = i915_kick_out_vgacon(dev_priv); - if (ret) { - DRM_ERROR("failed to remove conflicting VGA console\n"); - goto out_gtt; - } + ret = i915_kick_out_vgacon(dev_priv); + if (ret) { + DRM_ERROR("failed to remove conflicting VGA console\n"); + goto out_gtt; } pci_set_master(dev->pdev); @@ -834,14 +947,19 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) intel_power_domains_init(dev_priv); - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - ret = i915_load_modeset_init(dev); - if (ret < 0) { - DRM_ERROR("failed to init modeset\n"); - goto out_power_well; - } + ret = i915_load_modeset_init(dev); + if (ret < 0) { + DRM_ERROR("failed to init modeset\n"); + goto out_power_well; } + /* + * Notify a valid surface after modesetting, + * when running inside a VM. + */ + if (intel_vgpu_active(dev)) + I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY); + i915_setup_sysfs(dev); if (INTEL_INFO(dev)->num_pipes) { @@ -921,28 +1039,25 @@ int i915_driver_unload(struct drm_device *dev) acpi_video_unregister(); - if (drm_core_check_feature(dev, DRIVER_MODESET)) - intel_fbdev_fini(dev); + intel_fbdev_fini(dev); drm_vblank_cleanup(dev); - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - intel_modeset_cleanup(dev); - - /* - * free the memory space allocated for the child device - * config parsed from VBT - */ - if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) { - kfree(dev_priv->vbt.child_dev); - dev_priv->vbt.child_dev = NULL; - dev_priv->vbt.child_dev_num = 0; - } + intel_modeset_cleanup(dev); - vga_switcheroo_unregister_client(dev->pdev); - vga_client_register(dev->pdev, NULL, NULL, NULL); + /* + * free the memory space allocated for the child device + * config parsed from VBT + */ + if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) { + kfree(dev_priv->vbt.child_dev); + dev_priv->vbt.child_dev = NULL; + dev_priv->vbt.child_dev_num = 0; } + vga_switcheroo_unregister_client(dev->pdev); + vga_client_register(dev->pdev, NULL, NULL, NULL); + /* Free error state after interrupts are fully disabled. */ cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); i915_destroy_error_state(dev); @@ -952,17 +1067,15 @@ int i915_driver_unload(struct drm_device *dev) intel_opregion_fini(dev); - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - /* Flush any outstanding unpin_work. */ - flush_workqueue(dev_priv->wq); + /* Flush any outstanding unpin_work. */ + flush_workqueue(dev_priv->wq); - mutex_lock(&dev->struct_mutex); - i915_gem_cleanup_ringbuffer(dev); - i915_gem_batch_pool_fini(&dev_priv->mm.batch_pool); - i915_gem_context_fini(dev); - mutex_unlock(&dev->struct_mutex); - i915_gem_cleanup_stolen(dev); - } + mutex_lock(&dev->struct_mutex); + i915_gem_cleanup_ringbuffer(dev); + i915_gem_batch_pool_fini(&dev_priv->mm.batch_pool); + i915_gem_context_fini(dev); + mutex_unlock(&dev->struct_mutex); + i915_gem_cleanup_stolen(dev); intel_teardown_gmbus(dev); intel_teardown_mchbar(dev); @@ -1023,8 +1136,7 @@ void i915_driver_preclose(struct drm_device *dev, struct drm_file *file) i915_gem_release(dev, file); mutex_unlock(&dev->struct_mutex); - if (drm_core_check_feature(dev, DRIVER_MODESET)) - intel_modeset_preclose(dev, file); + intel_modeset_preclose(dev, file); } void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) @@ -1087,7 +1199,7 @@ const struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), - DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), |