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![Jani Nikula](/assets/img/avatar_default.png)
Similar to
commit 88afe715dd
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun Dec 16 12:15:41 2012 +0000
drm/i915: Clear the stolen fb before enabling
but on the resume path.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=57191
Reported-and-tested-by: Nikolay Amiantov <nikoamia@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org (3.9 only)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
313 lines
8.4 KiB
C
313 lines
8.4 KiB
C
/*
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* Copyright © 2007 David Airlie
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* David Airlie
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/sysrq.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/vga_switcheroo.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fb_helper.h>
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#include "intel_drv.h"
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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static struct fb_ops intelfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcmap = drm_fb_helper_setcmap,
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.fb_debug_enter = drm_fb_helper_debug_enter,
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.fb_debug_leave = drm_fb_helper_debug_leave,
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};
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static int intelfb_create(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
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struct drm_device *dev = ifbdev->helper.dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct fb_info *info;
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struct drm_framebuffer *fb;
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struct drm_mode_fb_cmd2 mode_cmd = {};
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struct drm_i915_gem_object *obj;
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struct device *device = &dev->pdev->dev;
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int size, ret;
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/* we don't do packed 24bpp */
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if (sizes->surface_bpp == 24)
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sizes->surface_bpp = 32;
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) /
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8), 64);
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = mode_cmd.pitches[0] * mode_cmd.height;
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size = ALIGN(size, PAGE_SIZE);
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obj = i915_gem_object_create_stolen(dev, size);
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if (obj == NULL)
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obj = i915_gem_alloc_object(dev, size);
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if (!obj) {
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DRM_ERROR("failed to allocate framebuffer\n");
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ret = -ENOMEM;
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goto out;
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}
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mutex_lock(&dev->struct_mutex);
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/* Flush everything out, we'll be doing GTT only from now on */
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ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
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if (ret) {
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DRM_ERROR("failed to pin fb: %d\n", ret);
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goto out_unref;
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}
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info = framebuffer_alloc(0, device);
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if (!info) {
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ret = -ENOMEM;
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goto out_unpin;
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}
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info->par = ifbdev;
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ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
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if (ret)
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goto out_unpin;
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fb = &ifbdev->ifb.base;
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ifbdev->helper.fb = fb;
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ifbdev->helper.fbdev = info;
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strcpy(info->fix.id, "inteldrmfb");
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info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
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info->fbops = &intelfb_ops;
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ret = fb_alloc_cmap(&info->cmap, 256, 0);
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if (ret) {
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ret = -ENOMEM;
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goto out_unpin;
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}
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/* setup aperture base/size for vesafb takeover */
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info->apertures = alloc_apertures(1);
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if (!info->apertures) {
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ret = -ENOMEM;
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goto out_unpin;
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}
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info->apertures->ranges[0].base = dev->mode_config.fb_base;
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info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
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info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
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info->fix.smem_len = size;
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info->screen_base =
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ioremap_wc(dev_priv->gtt.mappable_base + obj->gtt_offset,
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size);
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if (!info->screen_base) {
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ret = -ENOSPC;
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goto out_unpin;
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}
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info->screen_size = size;
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/* This driver doesn't need a VT switch to restore the mode on resume */
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info->skip_vt_switch = true;
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drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
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drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
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/* If the object is shmemfs backed, it will have given us zeroed pages.
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* If the object is stolen however, it will be full of whatever
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* garbage was left in there.
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*/
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if (ifbdev->ifb.obj->stolen)
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memset_io(info->screen_base, 0, info->screen_size);
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/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
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DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
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fb->width, fb->height,
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obj->gtt_offset, obj);
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mutex_unlock(&dev->struct_mutex);
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vga_switcheroo_client_fb_set(dev->pdev, info);
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return 0;
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out_unpin:
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i915_gem_object_unpin(obj);
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out_unref:
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drm_gem_object_unreference(&obj->base);
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mutex_unlock(&dev->struct_mutex);
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out:
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return ret;
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}
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static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
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.gamma_set = intel_crtc_fb_gamma_set,
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.gamma_get = intel_crtc_fb_gamma_get,
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.fb_probe = intelfb_create,
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};
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static void intel_fbdev_destroy(struct drm_device *dev,
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struct intel_fbdev *ifbdev)
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{
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struct fb_info *info;
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struct intel_framebuffer *ifb = &ifbdev->ifb;
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if (ifbdev->helper.fbdev) {
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info = ifbdev->helper.fbdev;
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unregister_framebuffer(info);
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iounmap(info->screen_base);
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if (info->cmap.len)
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fb_dealloc_cmap(&info->cmap);
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framebuffer_release(info);
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}
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drm_fb_helper_fini(&ifbdev->helper);
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drm_framebuffer_unregister_private(&ifb->base);
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drm_framebuffer_cleanup(&ifb->base);
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if (ifb->obj) {
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drm_gem_object_unreference_unlocked(&ifb->obj->base);
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ifb->obj = NULL;
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}
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}
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int intel_fbdev_init(struct drm_device *dev)
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{
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struct intel_fbdev *ifbdev;
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drm_i915_private_t *dev_priv = dev->dev_private;
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int ret;
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ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
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if (!ifbdev)
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return -ENOMEM;
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dev_priv->fbdev = ifbdev;
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ifbdev->helper.funcs = &intel_fb_helper_funcs;
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ret = drm_fb_helper_init(dev, &ifbdev->helper,
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INTEL_INFO(dev)->num_pipes,
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INTELFB_CONN_LIMIT);
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if (ret) {
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kfree(ifbdev);
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return ret;
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}
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drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
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return 0;
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}
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void intel_fbdev_initial_config(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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/* Due to peculiar init order wrt to hpd handling this is separate. */
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drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32);
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}
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void intel_fbdev_fini(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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if (!dev_priv->fbdev)
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return;
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intel_fbdev_destroy(dev, dev_priv->fbdev);
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kfree(dev_priv->fbdev);
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dev_priv->fbdev = NULL;
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}
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void intel_fbdev_set_suspend(struct drm_device *dev, int state)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct intel_fbdev *ifbdev = dev_priv->fbdev;
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struct fb_info *info;
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if (!ifbdev)
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return;
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info = ifbdev->helper.fbdev;
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/* On resume from hibernation: If the object is shmemfs backed, it has
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* been restored from swap. If the object is stolen however, it will be
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* full of whatever garbage was left in there.
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*/
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if (!state && ifbdev->ifb.obj->stolen)
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memset_io(info->screen_base, 0, info->screen_size);
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fb_set_suspend(info, state);
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}
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MODULE_LICENSE("GPL and additional rights");
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void intel_fb_output_poll_changed(struct drm_device *dev)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
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}
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void intel_fb_restore_mode(struct drm_device *dev)
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{
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int ret;
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_mode_config *config = &dev->mode_config;
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struct drm_plane *plane;
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if (INTEL_INFO(dev)->num_pipes == 0)
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return;
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drm_modeset_lock_all(dev);
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ret = drm_fb_helper_restore_fbdev_mode(&dev_priv->fbdev->helper);
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if (ret)
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DRM_DEBUG("failed to restore crtc mode\n");
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/* Be sure to shut off any planes that may be active */
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list_for_each_entry(plane, &config->plane_list, head)
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if (plane->enabled)
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plane->funcs->disable_plane(plane);
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drm_modeset_unlock_all(dev);
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}
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