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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2023 Intel Corporation
*/
#include "intel_fbdev_fb.h"
#include <drm/drm_fb_helper.h>
#include "xe_gt.h"
#include "xe_ttm_stolen_mgr.h"
#include "i915_drv.h"
#include "intel_display_types.h"
struct drm_framebuffer *intel_fbdev_fb_alloc(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_framebuffer *fb;
struct drm_device *dev = helper->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_mode_fb_cmd2 mode_cmd = {};
struct drm_i915_gem_object *obj;
int size;
/* we don't do packed 24bpp */
if (sizes->surface_bpp == 24)
sizes->surface_bpp = 32;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
DIV_ROUND_UP(sizes->surface_bpp, 8), XE_PAGE_SIZE);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
size = mode_cmd.pitches[0] * mode_cmd.height;
size = PAGE_ALIGN(size);
obj = ERR_PTR(-ENODEV);
if (!IS_DGFX(dev_priv)) {
obj = xe_bo_create_pin_map(dev_priv, xe_device_get_root_tile(dev_priv),
NULL, size,
ttm_bo_type_kernel, XE_BO_SCANOUT_BIT |
XE_BO_CREATE_STOLEN_BIT |
XE_BO_CREATE_PINNED_BIT);
if (!IS_ERR(obj))
drm_info(&dev_priv->drm, "Allocated fbdev into stolen\n");
else
drm_info(&dev_priv->drm, "Allocated fbdev into stolen failed: %li\n", PTR_ERR(obj));
}
if (IS_ERR(obj)) {
obj = xe_bo_create_pin_map(dev_priv, xe_device_get_root_tile(dev_priv), NULL, size,
ttm_bo_type_kernel, XE_BO_SCANOUT_BIT |
XE_BO_CREATE_VRAM_IF_DGFX(xe_device_get_root_tile(dev_priv)) |
XE_BO_CREATE_PINNED_BIT);
}
if (IS_ERR(obj)) {
drm_err(&dev_priv->drm, "failed to allocate framebuffer (%pe)\n", obj);
fb = ERR_PTR(-ENOMEM);
goto err;
}
fb = intel_framebuffer_create(obj, &mode_cmd);
if (IS_ERR(fb)) {
xe_bo_unpin_map_no_vm(obj);
goto err;
}
drm_gem_object_put(intel_bo_to_drm_bo(obj));
return fb;
err:
return fb;
}
int intel_fbdev_fb_fill_info(struct drm_i915_private *i915, struct fb_info *info,
struct drm_i915_gem_object *obj, struct i915_vma *vma)
{
struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
if (!(obj->flags & XE_BO_CREATE_SYSTEM_BIT)) {
if (obj->flags & XE_BO_CREATE_STOLEN_BIT)
info->fix.smem_start = xe_ttm_stolen_io_offset(obj, 0);
else
info->fix.smem_start =
pci_resource_start(pdev, 2) +
xe_bo_addr(obj, 0, XE_PAGE_SIZE);
info->fix.smem_len = obj->ttm.base.size;
} else {
/* XXX: Pure fiction, as the BO may not be physically accessible.. */
info->fix.smem_start = 0;
info->fix.smem_len = obj->ttm.base.size;
}
XE_WARN_ON(iosys_map_is_null(&obj->vmap));
info->screen_base = obj->vmap.vaddr_iomem;
info->screen_size = intel_bo_to_drm_bo(obj)->size;
return 0;
}
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