1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2021 Intel Corporation 4 */ 5 6 #include <drm/intel/display_parent_interface.h> 7 8 #include "regs/xe_gtt_defs.h" 9 10 #include "intel_display_types.h" 11 #include "intel_fb.h" 12 #include "intel_fb_pin.h" 13 #include "xe_bo.h" 14 #include "xe_display_bo.h" 15 #include "xe_display_vma.h" 16 #include "xe_ggtt.h" 17 #include "xe_mmio.h" 18 #include "xe_vram_types.h" 19 20 static struct xe_bo * 21 initial_plane_bo(struct xe_device *xe, 22 struct intel_initial_plane_config *plane_config) 23 { 24 struct xe_tile *tile0 = xe_device_get_root_tile(xe); 25 struct xe_bo *bo; 26 resource_size_t phys_base; 27 u32 base, size, flags; 28 u64 page_size = xe->info.vram_flags & XE_VRAM_FLAGS_NEED64K ? SZ_64K : SZ_4K; 29 30 if (plane_config->size == 0) 31 return NULL; 32 33 flags = XE_BO_FLAG_FORCE_WC | XE_BO_FLAG_GGTT; 34 35 base = round_down(plane_config->base, page_size); 36 if (IS_DGFX(xe)) { 37 u64 pte = xe_ggtt_read_pte(tile0->mem.ggtt, base); 38 39 if (!(pte & XE_GGTT_PTE_DM)) { 40 drm_err(&xe->drm, 41 "Initial plane programming missing DM bit\n"); 42 return NULL; 43 } 44 45 phys_base = pte & ~(page_size - 1); 46 flags |= XE_BO_FLAG_VRAM0; 47 48 /* 49 * We don't currently expect this to ever be placed in the 50 * stolen portion. 51 */ 52 if (phys_base >= xe_vram_region_usable_size(tile0->mem.vram)) { 53 drm_err(&xe->drm, 54 "Initial plane programming using invalid range, phys_base=%pa\n", 55 &phys_base); 56 return NULL; 57 } 58 59 drm_dbg(&xe->drm, 60 "Using phys_base=%pa, based on initial plane programming\n", 61 &phys_base); 62 } else { 63 struct ttm_resource_manager *stolen = ttm_manager_type(&xe->ttm, XE_PL_STOLEN); 64 65 if (!stolen) 66 return NULL; 67 phys_base = base; 68 flags |= XE_BO_FLAG_STOLEN; 69 70 if (IS_ENABLED(CONFIG_FRAMEBUFFER_CONSOLE) && 71 IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION) && 72 !xe_display_bo_fbdev_prefer_stolen(xe, plane_config->size)) { 73 drm_info(&xe->drm, "Initial FB size exceeds half of stolen, discarding\n"); 74 return NULL; 75 } 76 } 77 78 size = round_up(plane_config->base + plane_config->size, 79 page_size); 80 size -= base; 81 82 bo = xe_bo_create_pin_map_at_novm(xe, tile0, size, phys_base, 83 ttm_bo_type_kernel, flags, 0, false); 84 if (IS_ERR(bo)) { 85 drm_dbg(&xe->drm, 86 "Failed to create bo phys_base=%pa size %u with flags %x: %li\n", 87 &phys_base, size, flags, PTR_ERR(bo)); 88 return NULL; 89 } 90 91 return bo; 92 } 93 94 static struct drm_gem_object * 95 xe_alloc_initial_plane_obj(struct drm_device *drm, 96 struct intel_initial_plane_config *plane_config) 97 { 98 struct xe_device *xe = to_xe_device(drm); 99 struct drm_mode_fb_cmd2 mode_cmd = { 0 }; 100 struct drm_framebuffer *fb = plane_config->fb; 101 struct xe_bo *bo; 102 103 mode_cmd.pixel_format = fb->format->format; 104 mode_cmd.width = fb->width; 105 mode_cmd.height = fb->height; 106 mode_cmd.pitches[0] = fb->pitches[0]; 107 mode_cmd.modifier[0] = fb->modifier; 108 mode_cmd.flags = DRM_MODE_FB_MODIFIERS; 109 110 bo = initial_plane_bo(xe, plane_config); 111 if (!bo) 112 return NULL; 113 114 if (intel_framebuffer_init(to_intel_framebuffer(fb), 115 &bo->ttm.base, fb->format, &mode_cmd)) { 116 drm_dbg_kms(&xe->drm, "intel fb init failed\n"); 117 goto err_bo; 118 } 119 /* Reference handed over to fb */ 120 xe_bo_put(bo); 121 122 return &bo->ttm.base; 123 124 err_bo: 125 xe_bo_unpin_map_no_vm(bo); 126 return NULL; 127 } 128 129 static int 130 xe_initial_plane_setup(struct drm_plane_state *_plane_state, 131 struct intel_initial_plane_config *plane_config, 132 struct drm_framebuffer *fb, 133 struct i915_vma *_unused) 134 { 135 struct intel_plane_state *plane_state = to_intel_plane_state(_plane_state); 136 struct i915_vma *vma; 137 struct intel_fb_pin_params pin_params = { 138 .view = &plane_state->view.gtt, 139 }; 140 141 vma = intel_fb_pin_to_ggtt(intel_fb_bo(fb), &pin_params, NULL); 142 if (IS_ERR(vma)) 143 return PTR_ERR(vma); 144 145 plane_state->ggtt_vma = vma; 146 147 plane_state->surf = xe_ggtt_node_addr(plane_state->ggtt_vma->node); 148 149 plane_config->vma = vma; 150 151 return 0; 152 } 153 154 static void xe_plane_config_fini(struct intel_initial_plane_config *plane_config) 155 { 156 } 157 158 const struct intel_display_initial_plane_interface xe_display_initial_plane_interface = { 159 .alloc_obj = xe_alloc_initial_plane_obj, 160 .setup = xe_initial_plane_setup, 161 .config_fini = xe_plane_config_fini, 162 }; 163