diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_fb.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_fb.c | 315 |
1 files changed, 0 insertions, 315 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_fb.c b/drivers/gpu/drm/mgag200/mgag200_fb.c deleted file mode 100644 index 8adb33228732..000000000000 --- a/drivers/gpu/drm/mgag200/mgag200_fb.c +++ /dev/null @@ -1,315 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright 2010 Matt Turner. - * Copyright 2012 Red Hat - * - * Authors: Matthew Garrett - * Matt Turner - * Dave Airlie - */ -#include <linux/module.h> -#include <drm/drmP.h> -#include <drm/drm_util.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_crtc_helper.h> - -#include "mgag200_drv.h" - -static void mga_dirty_update(struct mga_fbdev *mfbdev, - int x, int y, int width, int height) -{ - int i; - struct drm_gem_object *obj; - struct drm_gem_vram_object *gbo; - int src_offset, dst_offset; - int bpp = mfbdev->mfb.base.format->cpp[0]; - int ret; - u8 *dst; - bool unmap = false; - bool store_for_later = false; - int x2, y2; - unsigned long flags; - - obj = mfbdev->mfb.obj; - gbo = drm_gem_vram_of_gem(obj); - - if (drm_can_sleep()) { - /* We pin the BO so it won't be moved during the - * update. The actual location, video RAM or system - * memory, is not important. - */ - ret = drm_gem_vram_pin(gbo, 0); - if (ret) { - if (ret != -EBUSY) - return; - store_for_later = true; - } - } else { - store_for_later = true; - } - - x2 = x + width - 1; - y2 = y + height - 1; - spin_lock_irqsave(&mfbdev->dirty_lock, flags); - - if (mfbdev->y1 < y) - y = mfbdev->y1; - if (mfbdev->y2 > y2) - y2 = mfbdev->y2; - if (mfbdev->x1 < x) - x = mfbdev->x1; - if (mfbdev->x2 > x2) - x2 = mfbdev->x2; - - if (store_for_later) { - mfbdev->x1 = x; - mfbdev->x2 = x2; - mfbdev->y1 = y; - mfbdev->y2 = y2; - spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); - return; - } - - mfbdev->x1 = mfbdev->y1 = INT_MAX; - mfbdev->x2 = mfbdev->y2 = 0; - spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); - - dst = drm_gem_vram_kmap(gbo, false, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } else if (!dst) { - dst = drm_gem_vram_kmap(gbo, true, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } - unmap = true; - } - - for (i = y; i <= y2; i++) { - /* assume equal stride for now */ - src_offset = dst_offset = - i * mfbdev->mfb.base.pitches[0] + (x * bpp); - memcpy_toio(dst + dst_offset, mfbdev->sysram + src_offset, - (x2 - x + 1) * bpp); - } - - if (unmap) - drm_gem_vram_kunmap(gbo); - -out: - drm_gem_vram_unpin(gbo); -} - -static void mga_fillrect(struct fb_info *info, - const struct fb_fillrect *rect) -{ - struct mga_fbdev *mfbdev = info->par; - drm_fb_helper_sys_fillrect(info, rect); - mga_dirty_update(mfbdev, rect->dx, rect->dy, rect->width, - rect->height); -} - -static void mga_copyarea(struct fb_info *info, - const struct fb_copyarea *area) -{ - struct mga_fbdev *mfbdev = info->par; - drm_fb_helper_sys_copyarea(info, area); - mga_dirty_update(mfbdev, area->dx, area->dy, area->width, - area->height); -} - -static void mga_imageblit(struct fb_info *info, - const struct fb_image *image) -{ - struct mga_fbdev *mfbdev = info->par; - drm_fb_helper_sys_imageblit(info, image); - mga_dirty_update(mfbdev, image->dx, image->dy, image->width, - image->height); -} - - -static struct fb_ops mgag200fb_ops = { - .owner = THIS_MODULE, - .fb_check_var = drm_fb_helper_check_var, - .fb_set_par = drm_fb_helper_set_par, - .fb_fillrect = mga_fillrect, - .fb_copyarea = mga_copyarea, - .fb_imageblit = mga_imageblit, - .fb_pan_display = drm_fb_helper_pan_display, - .fb_blank = drm_fb_helper_blank, - .fb_setcmap = drm_fb_helper_setcmap, -}; - -static int mgag200fb_create_object(struct mga_fbdev *afbdev, - const struct drm_mode_fb_cmd2 *mode_cmd, - struct drm_gem_object **gobj_p) -{ - struct drm_device *dev = afbdev->helper.dev; - u32 size; - struct drm_gem_object *gobj; - int ret = 0; - - size = mode_cmd->pitches[0] * mode_cmd->height; - ret = mgag200_gem_create(dev, size, true, &gobj); - if (ret) - return ret; - - *gobj_p = gobj; - return ret; -} - -static int mgag200fb_create(struct drm_fb_helper *helper, - struct drm_fb_helper_surface_size *sizes) -{ - struct mga_fbdev *mfbdev = - container_of(helper, struct mga_fbdev, helper); - struct drm_device *dev = mfbdev->helper.dev; - struct drm_mode_fb_cmd2 mode_cmd; - struct mga_device *mdev = dev->dev_private; - struct fb_info *info; - struct drm_framebuffer *fb; - struct drm_gem_object *gobj = NULL; - int ret; - void *sysram; - int size; - - mode_cmd.width = sizes->surface_width; - mode_cmd.height = sizes->surface_height; - mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); - - mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, - sizes->surface_depth); - size = mode_cmd.pitches[0] * mode_cmd.height; - - ret = mgag200fb_create_object(mfbdev, &mode_cmd, &gobj); - if (ret) { - DRM_ERROR("failed to create fbcon backing object %d\n", ret); - return ret; - } - - sysram = vmalloc(size); - if (!sysram) { - ret = -ENOMEM; - goto err_sysram; - } - - info = drm_fb_helper_alloc_fbi(helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_alloc_fbi; - } - - ret = mgag200_framebuffer_init(dev, &mfbdev->mfb, &mode_cmd, gobj); - if (ret) - goto err_alloc_fbi; - - mfbdev->sysram = sysram; - mfbdev->size = size; - - fb = &mfbdev->mfb.base; - - /* setup helper */ - mfbdev->helper.fb = fb; - - info->fbops = &mgag200fb_ops; - - /* setup aperture base/size for vesafb takeover */ - info->apertures->ranges[0].base = mdev->dev->mode_config.fb_base; - info->apertures->ranges[0].size = mdev->mc.vram_size; - - drm_fb_helper_fill_info(info, &mfbdev->helper, sizes); - - info->screen_base = sysram; - info->screen_size = size; - info->pixmap.flags = FB_PIXMAP_SYSTEM; - - DRM_DEBUG_KMS("allocated %dx%d\n", - fb->width, fb->height); - - return 0; - -err_alloc_fbi: - vfree(sysram); -err_sysram: - drm_gem_object_put_unlocked(gobj); - - return ret; -} - -static int mga_fbdev_destroy(struct drm_device *dev, - struct mga_fbdev *mfbdev) -{ - struct mga_framebuffer *mfb = &mfbdev->mfb; - - drm_fb_helper_unregister_fbi(&mfbdev->helper); - - if (mfb->obj) { - drm_gem_object_put_unlocked(mfb->obj); - mfb->obj = NULL; - } - drm_fb_helper_fini(&mfbdev->helper); - vfree(mfbdev->sysram); - drm_framebuffer_unregister_private(&mfb->base); - drm_framebuffer_cleanup(&mfb->base); - - return 0; -} - -static const struct drm_fb_helper_funcs mga_fb_helper_funcs = { - .fb_probe = mgag200fb_create, -}; - -int mgag200_fbdev_init(struct mga_device *mdev) -{ - struct mga_fbdev *mfbdev; - int ret; - int bpp_sel = 32; - - /* prefer 16bpp on low end gpus with limited VRAM */ - if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024)) - bpp_sel = 16; - - mfbdev = devm_kzalloc(mdev->dev->dev, sizeof(struct mga_fbdev), GFP_KERNEL); - if (!mfbdev) - return -ENOMEM; - - mdev->mfbdev = mfbdev; - spin_lock_init(&mfbdev->dirty_lock); - - drm_fb_helper_prepare(mdev->dev, &mfbdev->helper, &mga_fb_helper_funcs); - - ret = drm_fb_helper_init(mdev->dev, &mfbdev->helper, - MGAG200FB_CONN_LIMIT); - if (ret) - goto err_fb_helper; - - ret = drm_fb_helper_single_add_all_connectors(&mfbdev->helper); - if (ret) - goto err_fb_setup; - - /* disable all the possible outputs/crtcs before entering KMS mode */ - drm_helper_disable_unused_functions(mdev->dev); - - ret = drm_fb_helper_initial_config(&mfbdev->helper, bpp_sel); - if (ret) - goto err_fb_setup; - - return 0; - -err_fb_setup: - drm_fb_helper_fini(&mfbdev->helper); -err_fb_helper: - mdev->mfbdev = NULL; - - return ret; -} - -void mgag200_fbdev_fini(struct mga_device *mdev) -{ - if (!mdev->mfbdev) - return; - - mga_fbdev_destroy(mdev->dev, mdev->mfbdev); -} |