From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c | 341 +++++++++++++++++++++++++++ 1 file changed, 341 insertions(+) create mode 100644 kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c (limited to 'kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c') diff --git a/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c b/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c new file mode 100644 index 000000000..13ddf1c4b --- /dev/null +++ b/kernel/drivers/gpu/drm/cirrus/cirrus_fbdev.c @@ -0,0 +1,341 @@ +/* + * Copyright 2012 Red Hat + * + * This file is subject to the terms and conditions of the GNU General + * Public License version 2. See the file COPYING in the main + * directory of this archive for more details. + * + * Authors: Matthew Garrett + * Dave Airlie + */ +#include +#include +#include +#include + +#include + +#include "cirrus_drv.h" + +static void cirrus_dirty_update(struct cirrus_fbdev *afbdev, + int x, int y, int width, int height) +{ + int i; + struct drm_gem_object *obj; + struct cirrus_bo *bo; + int src_offset, dst_offset; + int bpp = (afbdev->gfb.base.bits_per_pixel + 7)/8; + int ret = -EBUSY; + bool unmap = false; + bool store_for_later = false; + int x2, y2; + unsigned long flags; + + obj = afbdev->gfb.obj; + bo = gem_to_cirrus_bo(obj); + + /* + * try and reserve the BO, if we fail with busy + * then the BO is being moved and we should + * store up the damage until later. + */ + if (drm_can_sleep()) + ret = cirrus_bo_reserve(bo, true); + if (ret) { + if (ret != -EBUSY) + return; + 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); + + if (!bo->kmap.virtual) { + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); + if (ret) { + DRM_ERROR("failed to kmap fb updates\n"); + cirrus_bo_unreserve(bo); + return; + } + unmap = true; + } + for (i = y; i < y + height; i++) { + /* assume equal stride for now */ + src_offset = dst_offset = i * afbdev->gfb.base.pitches[0] + (x * bpp); + memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp); + + } + if (unmap) + ttm_bo_kunmap(&bo->kmap); + + cirrus_bo_unreserve(bo); +} + +static void cirrus_fillrect(struct fb_info *info, + const struct fb_fillrect *rect) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_fillrect(info, rect); + cirrus_dirty_update(afbdev, rect->dx, rect->dy, rect->width, + rect->height); +} + +static void cirrus_copyarea(struct fb_info *info, + const struct fb_copyarea *area) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_copyarea(info, area); + cirrus_dirty_update(afbdev, area->dx, area->dy, area->width, + area->height); +} + +static void cirrus_imageblit(struct fb_info *info, + const struct fb_image *image) +{ + struct cirrus_fbdev *afbdev = info->par; + sys_imageblit(info, image); + cirrus_dirty_update(afbdev, image->dx, image->dy, image->width, + image->height); +} + + +static struct fb_ops cirrusfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = drm_fb_helper_check_var, + .fb_set_par = drm_fb_helper_set_par, + .fb_fillrect = cirrus_fillrect, + .fb_copyarea = cirrus_copyarea, + .fb_imageblit = cirrus_imageblit, + .fb_pan_display = drm_fb_helper_pan_display, + .fb_blank = drm_fb_helper_blank, + .fb_setcmap = drm_fb_helper_setcmap, +}; + +static int cirrusfb_create_object(struct cirrus_fbdev *afbdev, + struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object **gobj_p) +{ + struct drm_device *dev = afbdev->helper.dev; + struct cirrus_device *cdev = dev->dev_private; + u32 bpp, depth; + u32 size; + struct drm_gem_object *gobj; + + int ret = 0; + drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp); + + if (!cirrus_check_framebuffer(cdev, mode_cmd->width, mode_cmd->height, + bpp, mode_cmd->pitches[0])) + return -EINVAL; + + size = mode_cmd->pitches[0] * mode_cmd->height; + ret = cirrus_gem_create(dev, size, true, &gobj); + if (ret) + return ret; + + *gobj_p = gobj; + return ret; +} + +static int cirrusfb_create(struct drm_fb_helper *helper, + struct drm_fb_helper_surface_size *sizes) +{ + struct cirrus_fbdev *gfbdev = + container_of(helper, struct cirrus_fbdev, helper); + struct drm_device *dev = gfbdev->helper.dev; + struct cirrus_device *cdev = gfbdev->helper.dev->dev_private; + struct fb_info *info; + struct drm_framebuffer *fb; + struct drm_mode_fb_cmd2 mode_cmd; + struct device *device = &dev->pdev->dev; + void *sysram; + struct drm_gem_object *gobj = NULL; + struct cirrus_bo *bo = NULL; + int size, ret; + + 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 = cirrusfb_create_object(gfbdev, &mode_cmd, &gobj); + if (ret) { + DRM_ERROR("failed to create fbcon backing object %d\n", ret); + return ret; + } + + bo = gem_to_cirrus_bo(gobj); + + sysram = vmalloc(size); + if (!sysram) + return -ENOMEM; + + info = framebuffer_alloc(0, device); + if (info == NULL) + return -ENOMEM; + + info->par = gfbdev; + + ret = cirrus_framebuffer_init(cdev->dev, &gfbdev->gfb, &mode_cmd, gobj); + if (ret) + return ret; + + gfbdev->sysram = sysram; + gfbdev->size = size; + + fb = &gfbdev->gfb.base; + if (!fb) { + DRM_INFO("fb is NULL\n"); + return -EINVAL; + } + + /* setup helper */ + gfbdev->helper.fb = fb; + gfbdev->helper.fbdev = info; + + strcpy(info->fix.id, "cirrusdrmfb"); + + + info->flags = FBINFO_DEFAULT; + info->fbops = &cirrusfb_ops; + + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); + drm_fb_helper_fill_var(info, &gfbdev->helper, sizes->fb_width, + sizes->fb_height); + + /* setup aperture base/size for vesafb takeover */ + info->apertures = alloc_apertures(1); + if (!info->apertures) { + ret = -ENOMEM; + goto out_iounmap; + } + info->apertures->ranges[0].base = cdev->dev->mode_config.fb_base; + info->apertures->ranges[0].size = cdev->mc.vram_size; + + info->fix.smem_start = cdev->dev->mode_config.fb_base; + info->fix.smem_len = cdev->mc.vram_size; + + info->screen_base = sysram; + info->screen_size = size; + + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; + + ret = fb_alloc_cmap(&info->cmap, 256, 0); + if (ret) { + DRM_ERROR("%s: can't allocate color map\n", info->fix.id); + ret = -ENOMEM; + goto out_iounmap; + } + + DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); + DRM_INFO("vram aper at 0x%lX\n", (unsigned long)info->fix.smem_start); + DRM_INFO("size %lu\n", (unsigned long)info->fix.smem_len); + DRM_INFO("fb depth is %d\n", fb->depth); + DRM_INFO(" pitch is %d\n", fb->pitches[0]); + + return 0; +out_iounmap: + return ret; +} + +static int cirrus_fbdev_destroy(struct drm_device *dev, + struct cirrus_fbdev *gfbdev) +{ + struct fb_info *info; + struct cirrus_framebuffer *gfb = &gfbdev->gfb; + + if (gfbdev->helper.fbdev) { + info = gfbdev->helper.fbdev; + + unregister_framebuffer(info); + if (info->cmap.len) + fb_dealloc_cmap(&info->cmap); + framebuffer_release(info); + } + + if (gfb->obj) { + drm_gem_object_unreference_unlocked(gfb->obj); + gfb->obj = NULL; + } + + vfree(gfbdev->sysram); + drm_fb_helper_fini(&gfbdev->helper); + drm_framebuffer_unregister_private(&gfb->base); + drm_framebuffer_cleanup(&gfb->base); + + return 0; +} + +static const struct drm_fb_helper_funcs cirrus_fb_helper_funcs = { + .gamma_set = cirrus_crtc_fb_gamma_set, + .gamma_get = cirrus_crtc_fb_gamma_get, + .fb_probe = cirrusfb_create, +}; + +int cirrus_fbdev_init(struct cirrus_device *cdev) +{ + struct cirrus_fbdev *gfbdev; + int ret; + int bpp_sel = 24; + + /*bpp_sel = 8;*/ + gfbdev = kzalloc(sizeof(struct cirrus_fbdev), GFP_KERNEL); + if (!gfbdev) + return -ENOMEM; + + cdev->mode_info.gfbdev = gfbdev; + spin_lock_init(&gfbdev->dirty_lock); + + drm_fb_helper_prepare(cdev->dev, &gfbdev->helper, + &cirrus_fb_helper_funcs); + + ret = drm_fb_helper_init(cdev->dev, &gfbdev->helper, + cdev->num_crtc, CIRRUSFB_CONN_LIMIT); + if (ret) + return ret; + + ret = drm_fb_helper_single_add_all_connectors(&gfbdev->helper); + if (ret) + return ret; + + /* disable all the possible outputs/crtcs before entering KMS mode */ + drm_helper_disable_unused_functions(cdev->dev); + + return drm_fb_helper_initial_config(&gfbdev->helper, bpp_sel); +} + +void cirrus_fbdev_fini(struct cirrus_device *cdev) +{ + if (!cdev->mode_info.gfbdev) + return; + + cirrus_fbdev_destroy(cdev->dev, cdev->mode_info.gfbdev); + kfree(cdev->mode_info.gfbdev); + cdev->mode_info.gfbdev = NULL; +} -- cgit 1.2.3-korg