diff options
author | Jakub Kicinski <kuba@kernel.org> | 2024-03-22 02:14:13 +0300 |
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committer | Jakub Kicinski <kuba@kernel.org> | 2024-03-22 02:15:08 +0300 |
commit | 537c2e91d3549e5d6020bb0576cf9b54a845255f (patch) | |
tree | c09e8a1b7d733cde19b0c72678c28fb2bc97ff6b /drivers/gpu/drm/i915/display/intel_plane_initial.c | |
parent | 237bb5f7f7f55ec5f773469a974c61a49c298625 (diff) | |
parent | cba9ffdb9913dfe6be29f049ce920ce451ce7cc4 (diff) | |
download | linux-537c2e91d3549e5d6020bb0576cf9b54a845255f.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_plane_initial.c')
-rw-r--r-- | drivers/gpu/drm/i915/display/intel_plane_initial.c | 255 |
1 files changed, 187 insertions, 68 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_plane_initial.c b/drivers/gpu/drm/i915/display/intel_plane_initial.c index a55c09cbd0e4..ada1792df5b3 100644 --- a/drivers/gpu/drm/i915/display/intel_plane_initial.c +++ b/drivers/gpu/drm/i915/display/intel_plane_initial.c @@ -3,9 +3,11 @@ * Copyright © 2021 Intel Corporation */ +#include "gem/i915_gem_lmem.h" #include "gem/i915_gem_region.h" #include "i915_drv.h" #include "intel_atomic_plane.h" +#include "intel_crtc.h" #include "intel_display.h" #include "intel_display_types.h" #include "intel_fb.h" @@ -13,20 +15,21 @@ #include "intel_plane_initial.h" static bool -intel_reuse_initial_plane_obj(struct drm_i915_private *i915, - const struct intel_initial_plane_config *plane_config, +intel_reuse_initial_plane_obj(struct intel_crtc *this, + const struct intel_initial_plane_config plane_configs[], struct drm_framebuffer **fb, struct i915_vma **vma) { + struct drm_i915_private *i915 = to_i915(this->base.dev); struct intel_crtc *crtc; for_each_intel_crtc(&i915->drm, crtc) { - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); struct intel_plane *plane = to_intel_plane(crtc->base.primary); - struct intel_plane_state *plane_state = + const struct intel_plane_state *plane_state = to_intel_plane_state(plane->base.state); + const struct intel_crtc_state *crtc_state = + to_intel_crtc_state(crtc->base.state); if (!crtc_state->uapi.active) continue; @@ -34,7 +37,7 @@ intel_reuse_initial_plane_obj(struct drm_i915_private *i915, if (!plane_state->ggtt_vma) continue; - if (intel_plane_ggtt_offset(plane_state) == plane_config->base) { + if (plane_configs[this->pipe].base == plane_configs[crtc->pipe].base) { *fb = plane_state->hw.fb; *vma = plane_state->ggtt_vma; return true; @@ -44,12 +47,100 @@ intel_reuse_initial_plane_obj(struct drm_i915_private *i915, return false; } +static bool +initial_plane_phys_lmem(struct drm_i915_private *i915, + struct intel_initial_plane_config *plane_config) +{ + gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm; + struct intel_memory_region *mem; + dma_addr_t dma_addr; + gen8_pte_t pte; + u32 base; + + base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); + + gte += base / I915_GTT_PAGE_SIZE; + + pte = ioread64(gte); + if (!(pte & GEN12_GGTT_PTE_LM)) { + drm_err(&i915->drm, + "Initial plane programming missing PTE_LM bit\n"); + return false; + } + + dma_addr = pte & GEN12_GGTT_PTE_ADDR_MASK; + + if (IS_DGFX(i915)) + mem = i915->mm.regions[INTEL_REGION_LMEM_0]; + else + mem = i915->mm.stolen_region; + if (!mem) { + drm_dbg_kms(&i915->drm, + "Initial plane memory region not initialized\n"); + return false; + } + + /* + * On lmem we don't currently expect this to + * ever be placed in the stolen portion. + */ + if (dma_addr < mem->region.start || dma_addr > mem->region.end) { + drm_err(&i915->drm, + "Initial plane programming using invalid range, dma_addr=%pa (%s [%pa-%pa])\n", + &dma_addr, mem->region.name, &mem->region.start, &mem->region.end); + return false; + } + + drm_dbg(&i915->drm, + "Using dma_addr=%pa, based on initial plane programming\n", + &dma_addr); + + plane_config->phys_base = dma_addr - mem->region.start; + plane_config->mem = mem; + + return true; +} + +static bool +initial_plane_phys_smem(struct drm_i915_private *i915, + struct intel_initial_plane_config *plane_config) +{ + struct intel_memory_region *mem; + u32 base; + + base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); + + mem = i915->mm.stolen_region; + if (!mem) { + drm_dbg_kms(&i915->drm, + "Initial plane memory region not initialized\n"); + return false; + } + + /* FIXME get and validate the dma_addr from the PTE */ + plane_config->phys_base = base; + plane_config->mem = mem; + + return true; +} + +static bool +initial_plane_phys(struct drm_i915_private *i915, + struct intel_initial_plane_config *plane_config) +{ + if (IS_DGFX(i915) || HAS_LMEMBAR_SMEM_STOLEN(i915)) + return initial_plane_phys_lmem(i915, plane_config); + else + return initial_plane_phys_smem(i915, plane_config); +} + static struct i915_vma * initial_plane_vma(struct drm_i915_private *i915, struct intel_initial_plane_config *plane_config) { struct intel_memory_region *mem; struct drm_i915_gem_object *obj; + struct drm_mm_node orig_mm = {}; struct i915_vma *vma; resource_size_t phys_base; u32 base, size; @@ -58,45 +149,13 @@ initial_plane_vma(struct drm_i915_private *i915, if (plane_config->size == 0) return NULL; - base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); - if (IS_DGFX(i915)) { - gen8_pte_t __iomem *gte = to_gt(i915)->ggtt->gsm; - gen8_pte_t pte; - - gte += base / I915_GTT_PAGE_SIZE; - - pte = ioread64(gte); - if (!(pte & GEN12_GGTT_PTE_LM)) { - drm_err(&i915->drm, - "Initial plane programming missing PTE_LM bit\n"); - return NULL; - } - - phys_base = pte & I915_GTT_PAGE_MASK; - mem = i915->mm.regions[INTEL_REGION_LMEM_0]; - - /* - * We don't currently expect this to ever be placed in the - * stolen portion. - */ - if (phys_base >= resource_size(&mem->region)) { - drm_err(&i915->drm, - "Initial plane programming using invalid range, phys_base=%pa\n", - &phys_base); - return NULL; - } - - drm_dbg(&i915->drm, - "Using phys_base=%pa, based on initial plane programming\n", - &phys_base); - } else { - phys_base = base; - mem = i915->mm.stolen_region; - } - - if (!mem) + if (!initial_plane_phys(i915, plane_config)) return NULL; + phys_base = plane_config->phys_base; + mem = plane_config->mem; + + base = round_down(plane_config->base, I915_GTT_MIN_ALIGNMENT); size = round_up(plane_config->base + plane_config->size, mem->min_page_size); size -= base; @@ -108,14 +167,19 @@ initial_plane_vma(struct drm_i915_private *i915, */ if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) && mem == i915->mm.stolen_region && - size * 2 > i915->dsm.usable_size) + size * 2 > i915->dsm.usable_size) { + drm_dbg_kms(&i915->drm, "Initial FB size exceeds half of stolen, discarding\n"); return NULL; + } obj = i915_gem_object_create_region_at(mem, phys_base, size, I915_BO_ALLOC_USER | I915_BO_PREALLOC); - if (IS_ERR(obj)) + if (IS_ERR(obj)) { + drm_dbg_kms(&i915->drm, "Failed to preallocate initial FB in %s\n", + mem->region.name); return NULL; + } /* * Mark it WT ahead of time to avoid changing the @@ -139,23 +203,66 @@ initial_plane_vma(struct drm_i915_private *i915, goto err_obj; } + /* + * MTL GOP likes to place the framebuffer high up in ggtt, + * which can cause problems for ggtt_reserve_guc_top(). + * Try to pin it to a low ggtt address instead to avoid that. + */ + base = 0; + + if (base != plane_config->base) { + struct i915_ggtt *ggtt = to_gt(i915)->ggtt; + int ret; + + /* + * Make sure the original and new locations + * can't overlap. That would corrupt the original + * PTEs which are still being used for scanout. + */ + ret = i915_gem_gtt_reserve(&ggtt->vm, NULL, &orig_mm, + size, plane_config->base, + I915_COLOR_UNEVICTABLE, PIN_NOEVICT); + if (ret) + goto err_obj; + } + vma = i915_vma_instance(obj, &to_gt(i915)->ggtt->vm, NULL); if (IS_ERR(vma)) goto err_obj; +retry: pinctl = PIN_GLOBAL | PIN_OFFSET_FIXED | base; - if (HAS_GMCH(i915)) + if (!i915_gem_object_is_lmem(obj)) pinctl |= PIN_MAPPABLE; - if (i915_vma_pin(vma, 0, 0, pinctl)) + if (i915_vma_pin(vma, 0, 0, pinctl)) { + if (drm_mm_node_allocated(&orig_mm)) { + drm_mm_remove_node(&orig_mm); + /* + * Try again, but this time pin + * it to its original location. + */ + base = plane_config->base; + goto retry; + } goto err_obj; + } if (i915_gem_object_is_tiled(obj) && !i915_vma_is_map_and_fenceable(vma)) goto err_obj; + if (drm_mm_node_allocated(&orig_mm)) + drm_mm_remove_node(&orig_mm); + + drm_dbg_kms(&i915->drm, + "Initial plane fb bound to 0x%x in the ggtt (original 0x%x)\n", + i915_ggtt_offset(vma), plane_config->base); + return vma; err_obj: + if (drm_mm_node_allocated(&orig_mm)) + drm_mm_remove_node(&orig_mm); i915_gem_object_put(obj); return NULL; } @@ -210,10 +317,11 @@ err_vma: static void intel_find_initial_plane_obj(struct intel_crtc *crtc, - struct intel_initial_plane_config *plane_config) + struct intel_initial_plane_config plane_configs[]) { - struct drm_device *dev = crtc->base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_initial_plane_config *plane_config = + &plane_configs[crtc->pipe]; struct intel_plane *plane = to_intel_plane(crtc->base.primary); struct intel_plane_state *plane_state = @@ -239,7 +347,7 @@ intel_find_initial_plane_obj(struct intel_crtc *crtc, * Failed to alloc the obj, check to see if we should share * an fb with another CRTC instead */ - if (intel_reuse_initial_plane_obj(dev_priv, plane_config, &fb, &vma)) + if (intel_reuse_initial_plane_obj(crtc, plane_configs, &fb, &vma)) goto valid_fb; /* @@ -302,25 +410,36 @@ static void plane_config_fini(struct intel_initial_plane_config *plane_config) i915_vma_put(plane_config->vma); } -void intel_crtc_initial_plane_config(struct intel_crtc *crtc) +void intel_initial_plane_config(struct drm_i915_private *i915) { - struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); - struct intel_initial_plane_config plane_config = {}; + struct intel_initial_plane_config plane_configs[I915_MAX_PIPES] = {}; + struct intel_crtc *crtc; - /* - * Note that reserving the BIOS fb up front prevents us - * from stuffing other stolen allocations like the ring - * on top. This prevents some ugliness at boot time, and - * can even allow for smooth boot transitions if the BIOS - * fb is large enough for the active pipe configuration. - */ - dev_priv->display.funcs.display->get_initial_plane_config(crtc, &plane_config); + for_each_intel_crtc(&i915->drm, crtc) { + struct intel_initial_plane_config *plane_config = + &plane_configs[crtc->pipe]; - /* - * If the fb is shared between multiple heads, we'll - * just get the first one. - */ - intel_find_initial_plane_obj(crtc, &plane_config); + if (!to_intel_crtc_state(crtc->base.state)->uapi.active) + continue; + + /* + * Note that reserving the BIOS fb up front prevents us + * from stuffing other stolen allocations like the ring + * on top. This prevents some ugliness at boot time, and + * can even allow for smooth boot transitions if the BIOS + * fb is large enough for the active pipe configuration. + */ + i915->display.funcs.display->get_initial_plane_config(crtc, plane_config); - plane_config_fini(&plane_config); + /* + * If the fb is shared between multiple heads, we'll + * just get the first one. + */ + intel_find_initial_plane_obj(crtc, plane_configs); + + if (i915->display.funcs.display->fixup_initial_plane_config(crtc, plane_config)) + intel_crtc_wait_for_next_vblank(crtc); + + plane_config_fini(plane_config); + } } |