+++ /dev/null
-/*
- * Copyright 2012 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors: Dave Airlie <airlied@redhat.com>
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/sysrq.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-
-
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_fb_helper.h>
-#include <drm/drm_gem_framebuffer_helper.h>
-#include <drm/drm_util.h>
-
-#include "ast_drv.h"
-
-static void ast_dirty_update(struct ast_fbdev *afbdev,
- int x, int y, int width, int height)
-{
- int i;
- struct drm_gem_vram_object *gbo;
- int src_offset, dst_offset;
- int ret;
- u8 *dst;
- bool unmap = false;
- bool store_for_later = false;
- int x2, y2;
- unsigned long flags;
- struct drm_framebuffer *fb = afbdev->helper.fb;
- int bpp = fb->format->cpp[0];
-
- gbo = drm_gem_vram_of_gem(fb->obj[0]);
-
- 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(&afbdev->dirty_lock, flags);
-
- if (afbdev->y1 < y)
- y = afbdev->y1;
- if (afbdev->y2 > y2)
- y2 = afbdev->y2;
- if (afbdev->x1 < x)
- x = afbdev->x1;
- if (afbdev->x2 > x2)
- x2 = afbdev->x2;
-
- if (store_for_later) {
- afbdev->x1 = x;
- afbdev->x2 = x2;
- afbdev->y1 = y;
- afbdev->y2 = y2;
- spin_unlock_irqrestore(&afbdev->dirty_lock, flags);
- return;
- }
-
- afbdev->x1 = afbdev->y1 = INT_MAX;
- afbdev->x2 = afbdev->y2 = 0;
- spin_unlock_irqrestore(&afbdev->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 * fb->pitches[0] + (x * bpp);
- memcpy_toio(dst + dst_offset, afbdev->sysram + src_offset,
- (x2 - x + 1) * bpp);
- }
-
- if (unmap)
- drm_gem_vram_kunmap(gbo);
-
-out:
- drm_gem_vram_unpin(gbo);
-}
-
-static void ast_fillrect(struct fb_info *info,
- const struct fb_fillrect *rect)
-{
- struct ast_fbdev *afbdev = info->par;
- drm_fb_helper_sys_fillrect(info, rect);
- ast_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
- rect->height);
-}
-
-static void ast_copyarea(struct fb_info *info,
- const struct fb_copyarea *area)
-{
- struct ast_fbdev *afbdev = info->par;
- drm_fb_helper_sys_copyarea(info, area);
- ast_dirty_update(afbdev, area->dx, area->dy, area->width,
- area->height);
-}
-
-static void ast_imageblit(struct fb_info *info,
- const struct fb_image *image)
-{
- struct ast_fbdev *afbdev = info->par;
- drm_fb_helper_sys_imageblit(info, image);
- ast_dirty_update(afbdev, image->dx, image->dy, image->width,
- image->height);
-}
-
-static struct fb_ops astfb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = drm_fb_helper_check_var,
- .fb_set_par = drm_fb_helper_set_par,
- .fb_fillrect = ast_fillrect,
- .fb_copyarea = ast_copyarea,
- .fb_imageblit = ast_imageblit,
- .fb_pan_display = drm_fb_helper_pan_display,
- .fb_blank = drm_fb_helper_blank,
- .fb_setcmap = drm_fb_helper_setcmap,
-};
-
-static int astfb_create_object(struct ast_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 = ast_gem_create(dev, size, true, &gobj);
- if (ret)
- return ret;
-
- *gobj_p = gobj;
- return ret;
-}
-
-static int astfb_create(struct drm_fb_helper *helper,
- struct drm_fb_helper_surface_size *sizes)
-{
- struct ast_fbdev *afbdev =
- container_of(helper, struct ast_fbdev, helper);
- struct drm_device *dev = afbdev->helper.dev;
- struct drm_mode_fb_cmd2 mode_cmd;
- struct drm_framebuffer *fb;
- struct fb_info *info;
- int size, ret;
- void *sysram;
- struct drm_gem_object *gobj = NULL;
- 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 = astfb_create_object(afbdev, &mode_cmd, &gobj);
- if (ret) {
- DRM_ERROR("failed to create fbcon backing object %d\n", ret);
- return ret;
- }
-
- sysram = vmalloc(size);
- if (!sysram)
- return -ENOMEM;
-
- info = drm_fb_helper_alloc_fbi(helper);
- if (IS_ERR(info)) {
- ret = PTR_ERR(info);
- goto out;
- }
- fb = drm_gem_fbdev_fb_create(dev, sizes, 0, gobj, NULL);
- if (IS_ERR(fb)) {
- ret = PTR_ERR(fb);
- goto out;
- }
-
- afbdev->sysram = sysram;
- afbdev->size = size;
-
- afbdev->helper.fb = fb;
-
- info->fbops = &astfb_ops;
-
- info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
- info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
-
- drm_fb_helper_fill_info(info, &afbdev->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;
-
-out:
- vfree(sysram);
- return ret;
-}
-
-static const struct drm_fb_helper_funcs ast_fb_helper_funcs = {
- .fb_probe = astfb_create,
-};
-
-static void ast_fbdev_destroy(struct drm_device *dev,
- struct ast_fbdev *afbdev)
-{
- drm_helper_force_disable_all(dev);
- drm_fb_helper_unregister_fbi(&afbdev->helper);
-
- drm_fb_helper_fini(&afbdev->helper);
- drm_framebuffer_put(afbdev->helper.fb);
-
- vfree(afbdev->sysram);
-}
-
-int ast_fbdev_init(struct drm_device *dev)
-{
- struct ast_private *ast = dev->dev_private;
- struct ast_fbdev *afbdev;
- int ret;
-
- afbdev = kzalloc(sizeof(struct ast_fbdev), GFP_KERNEL);
- if (!afbdev)
- return -ENOMEM;
-
- ast->fbdev = afbdev;
- spin_lock_init(&afbdev->dirty_lock);
-
- drm_fb_helper_prepare(dev, &afbdev->helper, &ast_fb_helper_funcs);
-
- ret = drm_fb_helper_init(dev, &afbdev->helper, 1);
- if (ret)
- goto free;
-
- ret = drm_fb_helper_single_add_all_connectors(&afbdev->helper);
- if (ret)
- goto fini;
-
- /* disable all the possible outputs/crtcs before entering KMS mode */
- drm_helper_disable_unused_functions(dev);
-
- ret = drm_fb_helper_initial_config(&afbdev->helper, 32);
- if (ret)
- goto fini;
-
- return 0;
-
-fini:
- drm_fb_helper_fini(&afbdev->helper);
-free:
- kfree(afbdev);
- return ret;
-}
-
-void ast_fbdev_fini(struct drm_device *dev)
-{
- struct ast_private *ast = dev->dev_private;
-
- if (!ast->fbdev)
- return;
-
- ast_fbdev_destroy(dev, ast->fbdev);
- kfree(ast->fbdev);
- ast->fbdev = NULL;
-}
-
-void ast_fbdev_set_suspend(struct drm_device *dev, int state)
-{
- struct ast_private *ast = dev->dev_private;
-
- if (!ast->fbdev)
- return;
-
- drm_fb_helper_set_suspend(&ast->fbdev->helper, state);
-}
-
-void ast_fbdev_set_base(struct ast_private *ast, unsigned long gpu_addr)
-{
- ast->fbdev->helper.fbdev->fix.smem_start =
- ast->fbdev->helper.fbdev->apertures->ranges[0].base + gpu_addr;
- ast->fbdev->helper.fbdev->fix.smem_len = ast->vram_size - gpu_addr;
-}
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