From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add support for DPT (display page table). DPT is a
slightly peculiar two level page table scheme used for
tiled scanout buffers (linear uses direct ggtt mapping
still). The plane surface address will point at a page
in the DPT which holds the PTEs for 512 actual pages.
Thus we require 1/512 of the ggttt address space
compared to a direct ggtt mapping.
We create a new DPT address space for each framebuffer and
track two vmas (one for the DPT, another for the ggtt).
TODO:
- Is the i915_address_space approaach sane?
- Maybe don't map the whole DPT to write the PTEs?
- Deal with remapping/rotation? Need to create a
separate DPT for each remapped/rotated plane I
guess. Or else we'd need to make the per-fb DPT
large enough to support potentially several
remapped/rotated vmas. How large should that be?
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Bommu Krishnaiah <krishnaiah.bommu@xxxxxxxxx>
Cc: Wilson Chris P <Chris.P.Wilson@xxxxxxxxx>
Cc: Tang CQ <cq.tang@xxxxxxxxx>
Cc: Auld Matthew <matthew.auld@xxxxxxxxx>
Reviewed-by: Wilson Chris P <Chris.P.Wilson@xxxxxxxxx>
---
.../gpu/drm/i915/display/intel_atomic_plane.c | 7 +-
drivers/gpu/drm/i915/display/intel_display.c | 347 +++++++++++++++++-
drivers/gpu/drm/i915/display/intel_display.h | 1 +
.../drm/i915/display/intel_display_types.h | 15 +-
drivers/gpu/drm/i915/display/intel_fbc.c | 6 +-
.../drm/i915/display/skl_universal_plane.c | 19 +-
drivers/gpu/drm/i915/gt/gen8_ppgtt.h | 7 +
drivers/gpu/drm/i915/gt/intel_ggtt.c | 7 +-
drivers/gpu/drm/i915/gt/intel_gtt.h | 5 +
9 files changed, 387 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index c3f2962aa1ebc..fc68c6ffd9d73 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -102,7 +102,8 @@ intel_plane_duplicate_state(struct drm_plane *plane)
__drm_atomic_helper_plane_duplicate_state(plane, &intel_state->uapi);
- intel_state->vma = NULL;
+ intel_state->ggtt_vma = NULL;
+ intel_state->dpt_vma = NULL;
intel_state->flags = 0;
/* add reference to fb */
@@ -125,7 +126,9 @@ intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct intel_plane_state *plane_state = to_intel_plane_state(state);
- drm_WARN_ON(plane->dev, plane_state->vma);
+
+ drm_WARN_ON(plane->dev, plane_state->ggtt_vma);
+ drm_WARN_ON(plane->dev, plane_state->dpt_vma);
__drm_atomic_helper_plane_destroy_state(&plane_state->uapi);
if (plane_state->hw.fb)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index dd92c97eb8ca0..00621ccea2c40 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -66,6 +66,7 @@
#include "gem/i915_gem_object.h"
#include "gt/intel_rps.h"
+#include "gt/gen8_ppgtt.h"
#include "g4x_dp.h"
#include "g4x_hdmi.h"
@@ -122,6 +123,171 @@ static void ilk_pfit_enable(const struct intel_crtc_state *crtc_state);
static void intel_modeset_setup_hw_state(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx);
+struct i915_dpt {
+ struct i915_address_space vm;
+
+ struct drm_i915_gem_object *obj;
+ struct i915_vma *vma;
+ void __iomem *iomem;
+};
+
+#define i915_is_dpt(vm) ((vm)->is_dpt)
+
+static inline struct i915_dpt *
+i915_vm_to_dpt(struct i915_address_space *vm)
+{
+ BUILD_BUG_ON(offsetof(struct i915_dpt, vm));
+ GEM_BUG_ON(!i915_is_dpt(vm));
+ return container_of(vm, struct i915_dpt, vm);
+}
+
+#define dpt_total_entries(dpt) ((dpt)->vm.total >> PAGE_SHIFT)
+
+static void gen8_set_pte(void __iomem *addr, gen8_pte_t pte)
+{
+ writeq(pte, addr);
+}
+
+static void dpt_insert_page(struct i915_address_space *vm,
+ dma_addr_t addr,
+ u64 offset,
+ enum i915_cache_level level,
+ u32 flags)
+{
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+ gen8_pte_t __iomem *base = dpt->iomem;
+
+ gen8_set_pte(base + offset / I915_GTT_PAGE_SIZE,
+ vm->pte_encode(addr, level, flags));
+}
+
+static void dpt_insert_entries(struct i915_address_space *vm,
+ struct i915_vma *vma,
+ enum i915_cache_level level,
+ u32 flags)
+{
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+ gen8_pte_t __iomem *base = dpt->iomem;
+ const gen8_pte_t pte_encode = vm->pte_encode(0, level, flags);
+ struct sgt_iter sgt_iter;
+ dma_addr_t addr;
+ int i;
+
+ /*
+ * Note that we ignore PTE_READ_ONLY here. The caller must be careful
+ * not to allow the user to override access to a read only page.
+ */
+
+ i = vma->node.start / I915_GTT_PAGE_SIZE;
+ for_each_sgt_daddr(addr, sgt_iter, vma->pages)
+ gen8_set_pte(&base[i++], pte_encode | addr);
+}
+
+static void dpt_clear_range(struct i915_address_space *vm,
+ u64 start, u64 length)
+{
+}
+
+static void dpt_bind_vma(struct i915_address_space *vm,
+ struct i915_vm_pt_stash *stash,
+ struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
+{
+ struct drm_i915_gem_object *obj = vma->obj;
+ u32 pte_flags;
+
+ /* Applicable to VLV (gen8+ do not support RO in the GGTT) */
+ pte_flags = 0;
+ if (vma->vm->has_read_only && i915_gem_object_is_readonly(obj))
+ pte_flags |= PTE_READ_ONLY;
+
+ vma->vm->insert_entries(vma->vm, vma, cache_level, pte_flags);
+
+ vma->page_sizes.gtt = I915_GTT_PAGE_SIZE;
+
+ /*
+ * Without aliasing PPGTT there's no difference between
+ * GLOBAL/LOCAL_BIND, it's all the same ptes. Hence unconditionally
+ * upgrade to both bound if we bind either to avoid double-binding.
+ */
+ atomic_or(I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND, &vma->flags);
+}
+
+static void dpt_unbind_vma(struct i915_address_space *vm, struct i915_vma *vma)
+{
+ vm->clear_range(vm, vma->node.start, vma->size);
+}
+
+static void dpt_cleanup(struct i915_address_space *vm)
+{
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+ i915_gem_object_put(dpt->obj);
+}
+
+static struct i915_address_space *
+intel_dpt_create(struct drm_gem_object *obj)
+{
+ struct drm_i915_private *i915 = to_i915(obj->dev);
+ size_t size = DIV_ROUND_UP_ULL(obj->size, 512);
+ struct drm_i915_gem_object *dpt_obj;
+ struct i915_address_space *vm;
+ struct i915_dpt *dpt;
+ int ret;
+
+ size = round_up(size, 4096);
+
+ dpt_obj = i915_gem_object_create_stolen(i915, size);
+ if (IS_ERR(dpt_obj))
+ return ERR_CAST(dpt_obj);
+
+ ret = i915_gem_object_set_cache_level(dpt_obj, I915_CACHE_NONE);
+ if (ret) {
+ i915_gem_object_put(dpt_obj);
+ return ERR_PTR(ret);
+ }
+
+ dpt = kzalloc(sizeof(*dpt), GFP_KERNEL);
+ if (!dpt) {
+ i915_gem_object_put(dpt_obj);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ vm = &dpt->vm;
+
+ vm->gt = &i915->gt;
+ vm->i915 = i915;
+ vm->dma = &i915->drm.pdev->dev;
+ vm->total = (size / sizeof(gen8_pte_t)) * I915_GTT_PAGE_SIZE;
+ vm->is_dpt = true;
+
+ i915_address_space_init(vm, VM_CLASS_DPT);
+
+ vm->insert_page = dpt_insert_page;
+ vm->clear_range = dpt_clear_range;
+ vm->insert_entries = dpt_insert_entries;
+ vm->cleanup = dpt_cleanup;
+
+ vm->vma_ops.bind_vma = dpt_bind_vma;
+ vm->vma_ops.unbind_vma = dpt_unbind_vma;
+ vm->vma_ops.set_pages = ggtt_set_pages;
+ vm->vma_ops.clear_pages = clear_pages;
+
+ vm->pte_encode = gen8_ggtt_pte_encode;
+
+ dpt->obj = dpt_obj;
+
+ return &dpt->vm;
+}
+
+static void intel_dpt_destroy(struct i915_address_space *vm)
+{
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+ i915_vm_close(&dpt->vm);
+}
+
/* returns HPLL frequency in kHz */
int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
{
@@ -972,6 +1138,9 @@ unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
+ if (intel_fb_uses_dpt(fb))
+ return 512 * 4096;
+
/* AUX_DIST needs only 4K alignment */
if ((DISPLAY_VER(dev_priv) < 12 && is_aux_plane(fb, color_plane)) ||
is_ccs_plane(fb, color_plane))
@@ -1016,6 +1185,62 @@ static bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
plane_state->view.gtt.type == I915_GGTT_VIEW_NORMAL);
}
+static struct i915_vma *
+intel_pin_fb_obj_dpt(struct drm_framebuffer *fb,
+ const struct i915_ggtt_view *view,
+ bool uses_fence,
+ unsigned long *out_flags,
+ struct i915_address_space *vm)
+{
+ struct drm_device *dev = fb->dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ struct drm_i915_gem_object *obj = intel_fb_obj(fb);
+ struct i915_vma *vma;
+ u32 alignment;
+ int ret;
+
+ if (WARN_ON(!i915_gem_object_is_framebuffer(obj)))
+ return ERR_PTR(-EINVAL);
+
+ alignment = 4096 * 512;
+
+ atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
+
+ ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE);
+ if (ret) {
+ vma = ERR_PTR(ret);
+ goto err;
+ }
+
+ vma = i915_vma_instance(obj, vm, view);
+ if (IS_ERR(vma))
+ goto err;
+
+ if (i915_vma_misplaced(vma, 0, alignment, 0)) {
+ ret = i915_vma_unbind(vma);
+ if (ret) {
+ vma = ERR_PTR(ret);
+ goto err;
+ }
+ }
+
+ ret = i915_vma_pin(vma, 0, alignment, PIN_GLOBAL);
+ if (ret) {
+ vma = ERR_PTR(ret);
+ goto err;
+ }
+
+ vma->display_alignment = max_t(u64, vma->display_alignment, alignment);
+
+ i915_gem_object_flush_if_display(obj);
+
+ i915_vma_get(vma);
+err:
+ atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
+
+ return vma;
+}
+
struct i915_vma *
intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
bool phys_cursor,
@@ -1616,6 +1841,49 @@ static void intel_plane_disable_noatomic(struct intel_crtc *crtc,
intel_wait_for_vblank(dev_priv, crtc->pipe);
}
+static struct i915_vma *intel_dpt_pin(struct i915_address_space *vm)
+{
+ struct drm_i915_private *i915 = vm->i915;
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+ intel_wakeref_t wakeref;
+ struct i915_vma *vma;
+ void __iomem *iomem;
+
+ wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+ atomic_inc(&i915->gpu_error.pending_fb_pin);
+
+ vma = i915_gem_object_ggtt_pin(dpt->obj, NULL, 0, 4096,
+ HAS_LMEM(i915) ? 0 : PIN_MAPPABLE);
+ if (IS_ERR(vma))
+ goto err;
+
+ iomem = i915_vma_pin_iomap(vma);
+ i915_vma_unpin(vma);
+ if (IS_ERR(iomem)) {
+ vma = iomem;
+ goto err;
+ }
+
+ dpt->vma = vma;
+ dpt->iomem = iomem;
+
+ i915_vma_get(vma);
+
+err:
+ atomic_dec(&i915->gpu_error.pending_fb_pin);
+ intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+ return vma;
+}
+
+static void intel_dpt_unpin(struct i915_address_space *vm)
+{
+ struct i915_dpt *dpt = i915_vm_to_dpt(vm);
+
+ i915_vma_unpin_iomap(dpt->vma);
+ i915_vma_put(dpt->vma);
+}
+
static void
intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
struct intel_initial_plane_config *plane_config)
@@ -1661,12 +1929,12 @@ intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
continue;
state = to_intel_plane_state(c->primary->state);
- if (!state->vma)
+ if (!state->ggtt_vma)
continue;
if (intel_plane_ggtt_offset(state) == plane_config->base) {
fb = state->hw.fb;
- vma = state->vma;
+ vma = state->ggtt_vma;
goto valid_fb;
}
}
@@ -1693,7 +1961,7 @@ intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
&intel_state->view);
__i915_vma_pin(vma);
- intel_state->vma = i915_vma_get(vma);
+ intel_state->ggtt_vma = i915_vma_get(vma);
if (intel_plane_uses_fence(intel_state) && i915_vma_pin_fence(vma) == 0)
if (vma->fence)
intel_state->flags |= PLANE_HAS_FENCE;
@@ -10548,25 +10816,60 @@ int intel_plane_pin_fb(struct intel_plane_state *plane_state)
plane->id == PLANE_CURSOR &&
INTEL_INFO(dev_priv)->display.cursor_needs_physical;
- vma = intel_pin_and_fence_fb_obj(fb, phys_cursor,
- &plane_state->view.gtt,
- intel_plane_uses_fence(plane_state),
- &plane_state->flags);
- if (IS_ERR(vma))
- return PTR_ERR(vma);
-
- plane_state->vma = vma;
+ if (!intel_fb_uses_dpt(fb)) {
+ vma = intel_pin_and_fence_fb_obj(fb, phys_cursor,
+ &plane_state->view.gtt,
+ intel_plane_uses_fence(plane_state),
+ &plane_state->flags);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+
+ plane_state->ggtt_vma = vma;
+ } else {
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+ vma = intel_dpt_pin(intel_fb->dpt_vm);
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+
+ plane_state->ggtt_vma = vma;
+
+ vma = intel_pin_fb_obj_dpt(fb, &plane_state->view.gtt, false,
+ &plane_state->flags, intel_fb->dpt_vm);
+ if (IS_ERR(vma)) {
+ intel_dpt_unpin(intel_fb->dpt_vm);
+ plane_state->ggtt_vma = NULL;
+ return PTR_ERR(vma);
+ }
+
+ plane_state->dpt_vma = vma;
+
+ WARN_ON(plane_state->ggtt_vma == plane_state->dpt_vma);
+ }
return 0;
}
void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state)
{
+ struct drm_framebuffer *fb = old_plane_state->hw.fb;
struct i915_vma *vma;
- vma = fetch_and_zero(&old_plane_state->vma);
- if (vma)
- intel_unpin_fb_vma(vma, old_plane_state->flags);
+ if (!intel_fb_uses_dpt(fb)) {
+ vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+ if (vma)
+ intel_unpin_fb_vma(vma, old_plane_state->flags);
+ } else {
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+
+ vma = fetch_and_zero(&old_plane_state->dpt_vma);
+ if (vma)
+ intel_unpin_fb_vma(vma, old_plane_state->flags);
+
+ vma = fetch_and_zero(&old_plane_state->ggtt_vma);
+ if (vma)
+ intel_dpt_unpin(intel_fb->dpt_vm);
+ }
}
/**
@@ -11089,6 +11392,10 @@ static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
drm_framebuffer_cleanup(fb);
+
+ if (intel_fb_uses_dpt(fb))
+ intel_dpt_destroy(intel_fb->dpt_vm);
+
intel_frontbuffer_put(intel_fb->frontbuffer);
kfree(intel_fb);
@@ -11259,6 +11566,18 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
if (ret)
goto err;
+ if (intel_fb_uses_dpt(fb)) {
+ struct i915_address_space *vm;
+
+ vm = intel_dpt_create(&obj->base);
+ if (IS_ERR(vm)) {
+ ret = PTR_ERR(vm);
+ goto err;
+ }
+
+ intel_fb->dpt_vm = vm;
+ }
+
ret = drm_framebuffer_init(&dev_priv->drm, fb, &intel_fb_funcs);
if (ret) {
drm_err(&dev_priv->drm, "framebuffer init failed %d\n", ret);
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 105294ec2dcc9..a717d52eba0bf 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -44,6 +44,7 @@ struct drm_mode_fb_cmd2;
struct drm_modeset_acquire_ctx;
struct drm_plane;
struct drm_plane_state;
+struct i915_address_space;
struct i915_ggtt_view;
struct intel_atomic_state;
struct intel_crtc;
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index e2e707c4dff56..3c73737f88da4 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -129,6 +129,8 @@ struct intel_framebuffer {
struct intel_fb_view normal_view;
struct intel_fb_view rotated_view;
struct intel_fb_view remapped_view;
+
+ struct i915_address_space *dpt_vm;
};
struct intel_fbdev {
@@ -611,7 +613,8 @@ struct intel_plane_state {
enum drm_scaling_filter scaling_filter;
} hw;
- struct i915_vma *vma;
+ struct i915_vma *ggtt_vma;
+ struct i915_vma *dpt_vma;
unsigned long flags;
#define PLANE_HAS_FENCE BIT(0)
@@ -1973,9 +1976,15 @@ intel_wait_for_vblank_if_active(struct drm_i915_private *dev_priv, enum pipe pip
intel_wait_for_vblank(dev_priv, pipe);
}
-static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *state)
+static inline bool intel_fb_uses_dpt(const struct drm_framebuffer *fb)
{
- return i915_ggtt_offset(state->vma);
+ return fb && DISPLAY_VER(to_i915(fb->dev)) >= 13 &&
+ fb->modifier != DRM_FORMAT_MOD_LINEAR;
+}
+
+static inline u32 intel_plane_ggtt_offset(const struct intel_plane_state *plane_state)
+{
+ return i915_ggtt_offset(plane_state->ggtt_vma);
}
static inline struct intel_frontbuffer *
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 91dad8004c340..85a0e646884f5 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -736,11 +736,11 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
cache->fence_y_offset = intel_plane_fence_y_offset(plane_state);
drm_WARN_ON(&dev_priv->drm, plane_state->flags & PLANE_HAS_FENCE &&
- !plane_state->vma->fence);
+ !plane_state->ggtt_vma->fence);
if (plane_state->flags & PLANE_HAS_FENCE &&
- plane_state->vma->fence)
- cache->fence_id = plane_state->vma->fence->id;
+ plane_state->ggtt_vma->fence)
+ cache->fence_id = plane_state->ggtt_vma->fence->id;
else
cache->fence_id = -1;
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 75d3ca3dbb372..349a53cef0a94 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -933,6 +933,21 @@ static u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
return plane_color_ctl;
}
+static u32 skl_surf_address(const struct intel_plane_state *plane_state,
+ int color_plane)
+{
+ const struct drm_framebuffer *fb = plane_state->hw.fb;
+ u32 offset = plane_state->view.color_plane[color_plane].offset;
+
+ if (intel_fb_uses_dpt(fb)) {
+ WARN_ON(offset & 0x1fffff);
+ return offset >> 9;
+ } else {
+ WARN_ON(offset & 0xfff);
+ return offset;
+ }
+}
+
static void
skl_program_plane(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
@@ -943,7 +958,7 @@ skl_program_plane(struct intel_plane *plane,
enum plane_id plane_id = plane->id;
enum pipe pipe = plane->pipe;
const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
- u32 surf_addr = plane_state->view.color_plane[color_plane].offset;
+ u32 surf_addr = skl_surf_address(plane_state, color_plane);
u32 stride = skl_plane_stride(plane_state, color_plane);
const struct drm_framebuffer *fb = plane_state->hw.fb;
int aux_plane = skl_main_to_aux_plane(fb, color_plane);
@@ -982,7 +997,7 @@ skl_program_plane(struct intel_plane *plane,
}
if (aux_plane) {
- aux_dist = plane_state->view.color_plane[aux_plane].offset - surf_addr;
+ aux_dist = skl_surf_address(plane_state, aux_plane) - surf_addr;
if (DISPLAY_VER(dev_priv) < 12)
aux_dist |= skl_plane_stride(plane_state, aux_plane);
diff --git a/drivers/gpu/drm/i915/gt/gen8_ppgtt.h b/drivers/gpu/drm/i915/gt/gen8_ppgtt.h
index 76a08b9c1f5c8..b9028c2ad3c7d 100644
--- a/drivers/gpu/drm/i915/gt/gen8_ppgtt.h
+++ b/drivers/gpu/drm/i915/gt/gen8_ppgtt.h
@@ -6,8 +6,15 @@
#ifndef __GEN8_PPGTT_H__
#define __GEN8_PPGTT_H__
+#include <linux/kernel.h>
+
+struct i915_address_space;
struct intel_gt;
+enum i915_cache_level;
struct i915_ppgtt *gen8_ppgtt_create(struct intel_gt *gt);
+u64 gen8_ggtt_pte_encode(dma_addr_t addr,
+ enum i915_cache_level level,
+ u32 flags);
#endif
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 670c1271e7d51..38742bf33fa37 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -18,6 +18,7 @@
#include "i915_vgpu.h"
#include "intel_gtt.h"
+#include "gen8_ppgtt.h"
static int
i915_get_ggtt_vma_pages(struct i915_vma *vma);
@@ -187,9 +188,9 @@ static void gmch_ggtt_invalidate(struct i915_ggtt *ggtt)
intel_gtt_chipset_flush();
}
-static u64 gen8_ggtt_pte_encode(dma_addr_t addr,
- enum i915_cache_level level,
- u32 flags)
+u64 gen8_ggtt_pte_encode(dma_addr_t addr,
+ enum i915_cache_level level,
+ u32 flags)
{
gen8_pte_t pte = addr | _PAGE_PRESENT;
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h
index e67e34e179131..79f565aeb8c09 100644
--- a/drivers/gpu/drm/i915/gt/intel_gtt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
@@ -245,6 +245,7 @@ struct i915_address_space {
struct dma_resv resv; /* reservation lock for all pd objects, and buffer pool */
#define VM_CLASS_GGTT 0
#define VM_CLASS_PPGTT 1
+#define VM_CLASS_DPT 2
struct drm_i915_gem_object *scratch[4];
/**
@@ -255,6 +256,9 @@ struct i915_address_space {
/* Global GTT */
bool is_ggtt:1;
+ /* Display page table */
+ bool is_dpt:1;
+
/* Some systems support read-only mappings for GGTT and/or PPGTT */
bool has_read_only:1;
@@ -351,6 +355,7 @@ struct i915_ppgtt {
};
#define i915_is_ggtt(vm) ((vm)->is_ggtt)
+#define i915_is_dpt(vm) ((vm)->is_dpt)
int __must_check
i915_vm_lock_objects(struct i915_address_space *vm, struct i915_gem_ww_ctx *ww);
--
2.27.0
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