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_fbdev_fb.h" 10 #include "xe_bo.h" 11 #include "xe_gt.h" 12 #include "xe_ttm_stolen_mgr.h" 13 14 struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper, 15 struct drm_fb_helper_surface_size *sizes) 16 { 17 struct drm_framebuffer *fb; 18 struct drm_device *dev = helper->dev; 19 struct xe_device *xe = to_xe_device(dev); 20 struct drm_mode_fb_cmd2 mode_cmd = {}; 21 struct drm_i915_gem_object *obj; 22 int size; 23 24 /* we don't do packed 24bpp */ 25 if (sizes->surface_bpp == 24) 26 sizes->surface_bpp = 32; 27 28 mode_cmd.width = sizes->surface_width; 29 mode_cmd.height = sizes->surface_height; 30 31 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * 32 DIV_ROUND_UP(sizes->surface_bpp, 8), XE_PAGE_SIZE); 33 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 34 sizes->surface_depth); 35 36 size = mode_cmd.pitches[0] * mode_cmd.height; 37 size = PAGE_ALIGN(size); 38 obj = ERR_PTR(-ENODEV); 39 40 if (!IS_DGFX(xe)) { 41 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), 42 NULL, size, 43 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 44 XE_BO_FLAG_STOLEN | 45 XE_BO_FLAG_PINNED); 46 if (!IS_ERR(obj)) 47 drm_info(&xe->drm, "Allocated fbdev into stolen\n"); 48 else 49 drm_info(&xe->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj)); 50 } 51 if (IS_ERR(obj)) { 52 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), NULL, size, 53 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 54 XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) | 55 XE_BO_FLAG_PINNED); 56 } 57 58 if (IS_ERR(obj)) { 59 drm_err(&xe->drm, "failed to allocate framebuffer (%pe)\n", obj); 60 fb = ERR_PTR(-ENOMEM); 61 goto err; 62 } 63 64 fb = intel_framebuffer_create(obj, &mode_cmd); 65 if (IS_ERR(fb)) { 66 xe_bo_unpin_map_no_vm(obj); 67 goto err; 68 } 69 70 drm_gem_object_put(intel_bo_to_drm_bo(obj)); 71 72 return to_intel_framebuffer(fb); 73 74 err: 75 return ERR_CAST(fb); 76 } 77 78 int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info, 79 struct drm_i915_gem_object *obj, struct i915_vma *vma) 80 { 81 struct pci_dev *pdev = to_pci_dev(i915->drm.dev); 82 83 if (!(obj->flags & XE_BO_FLAG_SYSTEM)) { 84 if (obj->flags & XE_BO_FLAG_STOLEN) 85 info->fix.smem_start = xe_ttm_stolen_io_offset(obj, 0); 86 else 87 info->fix.smem_start = 88 pci_resource_start(pdev, 2) + 89 xe_bo_addr(obj, 0, XE_PAGE_SIZE); 90 91 info->fix.smem_len = obj->ttm.base.size; 92 } else { 93 /* XXX: Pure fiction, as the BO may not be physically accessible.. */ 94 info->fix.smem_start = 0; 95 info->fix.smem_len = obj->ttm.base.size; 96 } 97 XE_WARN_ON(iosys_map_is_null(&obj->vmap)); 98 99 info->screen_base = obj->vmap.vaddr_iomem; 100 info->screen_size = intel_bo_to_drm_bo(obj)->size; 101 102 return 0; 103 } 104