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_ttm_stolen_mgr.h" 12 #include "xe_wa.h" 13 14 #include <generated/xe_wa_oob.h> 15 16 struct intel_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper, 17 struct drm_fb_helper_surface_size *sizes) 18 { 19 struct drm_framebuffer *fb; 20 struct drm_device *dev = helper->dev; 21 struct xe_device *xe = to_xe_device(dev); 22 struct drm_mode_fb_cmd2 mode_cmd = {}; 23 struct drm_i915_gem_object *obj; 24 int size; 25 26 /* we don't do packed 24bpp */ 27 if (sizes->surface_bpp == 24) 28 sizes->surface_bpp = 32; 29 30 mode_cmd.width = sizes->surface_width; 31 mode_cmd.height = sizes->surface_height; 32 33 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * 34 DIV_ROUND_UP(sizes->surface_bpp, 8), XE_PAGE_SIZE); 35 mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, 36 sizes->surface_depth); 37 38 size = mode_cmd.pitches[0] * mode_cmd.height; 39 size = PAGE_ALIGN(size); 40 obj = ERR_PTR(-ENODEV); 41 42 if (!IS_DGFX(xe) && !XE_WA(xe_root_mmio_gt(xe), 22019338487_display)) { 43 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), 44 NULL, size, 45 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 46 XE_BO_FLAG_STOLEN | 47 XE_BO_FLAG_PINNED); 48 if (!IS_ERR(obj)) 49 drm_info(&xe->drm, "Allocated fbdev into stolen\n"); 50 else 51 drm_info(&xe->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj)); 52 } 53 54 if (IS_ERR(obj)) { 55 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), NULL, size, 56 ttm_bo_type_kernel, XE_BO_FLAG_SCANOUT | 57 XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) | 58 XE_BO_FLAG_PINNED); 59 } 60 61 if (IS_ERR(obj)) { 62 drm_err(&xe->drm, "failed to allocate framebuffer (%pe)\n", obj); 63 fb = ERR_PTR(-ENOMEM); 64 goto err; 65 } 66 67 fb = intel_framebuffer_create(obj, &mode_cmd); 68 if (IS_ERR(fb)) { 69 xe_bo_unpin_map_no_vm(obj); 70 goto err; 71 } 72 73 drm_gem_object_put(intel_bo_to_drm_bo(obj)); 74 75 return to_intel_framebuffer(fb); 76 77 err: 78 return ERR_CAST(fb); 79 } 80 81 int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info, 82 struct drm_i915_gem_object *obj, struct i915_vma *vma) 83 { 84 struct pci_dev *pdev = to_pci_dev(i915->drm.dev); 85 86 if (!(obj->flags & XE_BO_FLAG_SYSTEM)) { 87 if (obj->flags & XE_BO_FLAG_STOLEN) 88 info->fix.smem_start = xe_ttm_stolen_io_offset(obj, 0); 89 else 90 info->fix.smem_start = 91 pci_resource_start(pdev, 2) + 92 xe_bo_addr(obj, 0, XE_PAGE_SIZE); 93 94 info->fix.smem_len = obj->ttm.base.size; 95 } else { 96 /* XXX: Pure fiction, as the BO may not be physically accessible.. */ 97 info->fix.smem_start = 0; 98 info->fix.smem_len = obj->ttm.base.size; 99 } 100 XE_WARN_ON(iosys_map_is_null(&obj->vmap)); 101 102 info->screen_base = obj->vmap.vaddr_iomem; 103 info->screen_size = intel_bo_to_drm_bo(obj)->size; 104 105 return 0; 106 } 107