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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2023 Intel Corporation4 */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 16struct 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 else51 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 77err:78 return ERR_CAST(fb);79}80 81int 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 else90 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