1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2023 Intel Corporation 4 */ 5 6 #include <drm/drm_fb_helper.h> 7 8 #include "intel_display_types.h" 9 #include "intel_fb.h" 10 #include "intel_fbdev_fb.h" 11 #include "xe_bo.h" 12 #include "xe_ttm_stolen_mgr.h" 13 #include "xe_wa.h" 14 15 #include <generated/xe_wa_oob.h> 16 17 struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper, 18 struct drm_fb_helper_surface_size *sizes) 19 { 20 struct drm_framebuffer *fb; 21 struct drm_device *dev = helper->dev; 22 struct xe_device *xe = to_xe_device(dev); 23 struct drm_mode_fb_cmd2 mode_cmd = {}; 24 struct xe_bo *obj; 25 int size; 26 27 /* we don't do packed 24bpp */ 28 if (sizes->surface_bpp == 24) 29 sizes->surface_bpp = 32; 30 31 mode_cmd.width = sizes->surface_width; 32 mode_cmd.height = sizes->surface_height; 33 34 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * 35 DIV_ROUND_UP(sizes->surface_bpp, 8), XE_PAGE_SIZE); 36 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 37 sizes->surface_depth); 38 39 size = mode_cmd.pitches[0] * mode_cmd.height; 40 size = PAGE_ALIGN(size); 41 obj = ERR_PTR(-ENODEV); 42 43 if (!IS_DGFX(xe) && !XE_WA(xe_root_mmio_gt(xe), 22019338487_display)) { 44 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), 45 NULL, size, 46 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 47 XE_BO_FLAG_STOLEN | 48 XE_BO_FLAG_PINNED); 49 if (!IS_ERR(obj)) 50 drm_info(&xe->drm, "Allocated fbdev into stolen\n"); 51 else 52 drm_info(&xe->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj)); 53 } 54 55 if (IS_ERR(obj)) { 56 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), NULL, size, 57 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 58 XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) | 59 XE_BO_FLAG_PINNED); 60 } 61 62 if (IS_ERR(obj)) { 63 drm_err(&xe->drm, "failed to allocate framebuffer (%pe)\n", obj); 64 fb = ERR_PTR(-ENOMEM); 65 goto err; 66 } 67 68 fb = intel_framebuffer_create(&obj->ttm.base, &mode_cmd); 69 if (IS_ERR(fb)) { 70 xe_bo_unpin_map_no_vm(obj); 71 goto err; 72 } 73 74 drm_gem_object_put(&obj->ttm.base); 75 76 return to_intel_framebuffer(fb); 77 78 err: 79 return ERR_CAST(fb); 80 } 81 82 int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info, 83 struct drm_gem_object *_obj, struct i915_vma *vma) 84 { 85 struct xe_bo *obj = gem_to_xe_bo(_obj); 86 struct pci_dev *pdev = to_pci_dev(i915->drm.dev); 87 88 if (!(obj->flags & XE_BO_FLAG_SYSTEM)) { 89 if (obj->flags & XE_BO_FLAG_STOLEN) 90 info->fix.smem_start = xe_ttm_stolen_io_offset(obj, 0); 91 else 92 info->fix.smem_start = 93 pci_resource_start(pdev, 2) + 94 xe_bo_addr(obj, 0, XE_PAGE_SIZE); 95 96 info->fix.smem_len = obj->ttm.base.size; 97 } else { 98 /* XXX: Pure fiction, as the BO may not be physically accessible.. */ 99 info->fix.smem_start = 0; 100 info->fix.smem_len = obj->ttm.base.size; 101 } 102 XE_WARN_ON(iosys_map_is_null(&obj->vmap)); 103 104 info->screen_base = obj->vmap.vaddr_iomem; 105 info->screen_size = obj->ttm.base.size; 106 107 return 0; 108 } 109