mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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560 lines
15 KiB
C
560 lines
15 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/init.h>
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#include <linux/screen_info.h>
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#include <linux/vga_switcheroo.h>
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#include <linux/console.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_crtc_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_atomic.h>
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#include "nouveau_drv.h"
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#include "nouveau_gem.h"
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#include "nouveau_bo.h"
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#include "nouveau_fbcon.h"
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#include "nouveau_chan.h"
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#include "nouveau_vmm.h"
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#include "nouveau_crtc.h"
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MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
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int nouveau_nofbaccel = 0;
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module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
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MODULE_PARM_DESC(fbcon_bpp, "fbcon bits-per-pixel (default: auto)");
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static int nouveau_fbcon_bpp;
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module_param_named(fbcon_bpp, nouveau_fbcon_bpp, int, 0400);
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static void
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nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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struct nvif_device *device = &drm->client.device;
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int ret;
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if (info->state != FBINFO_STATE_RUNNING)
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return;
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ret = -ENODEV;
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if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
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mutex_trylock(&drm->client.mutex)) {
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if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
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ret = nv04_fbcon_fillrect(info, rect);
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else
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if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
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ret = nv50_fbcon_fillrect(info, rect);
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else
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ret = nvc0_fbcon_fillrect(info, rect);
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mutex_unlock(&drm->client.mutex);
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}
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if (ret == 0)
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return;
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if (ret != -ENODEV)
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nouveau_fbcon_gpu_lockup(info);
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drm_fb_helper_cfb_fillrect(info, rect);
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}
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static void
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nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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struct nvif_device *device = &drm->client.device;
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int ret;
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if (info->state != FBINFO_STATE_RUNNING)
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return;
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ret = -ENODEV;
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if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
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mutex_trylock(&drm->client.mutex)) {
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if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
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ret = nv04_fbcon_copyarea(info, image);
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else
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if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
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ret = nv50_fbcon_copyarea(info, image);
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else
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ret = nvc0_fbcon_copyarea(info, image);
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mutex_unlock(&drm->client.mutex);
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}
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if (ret == 0)
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return;
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if (ret != -ENODEV)
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nouveau_fbcon_gpu_lockup(info);
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drm_fb_helper_cfb_copyarea(info, image);
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}
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static void
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nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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struct nvif_device *device = &drm->client.device;
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int ret;
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if (info->state != FBINFO_STATE_RUNNING)
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return;
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ret = -ENODEV;
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if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
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mutex_trylock(&drm->client.mutex)) {
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if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
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ret = nv04_fbcon_imageblit(info, image);
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else
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if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
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ret = nv50_fbcon_imageblit(info, image);
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else
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ret = nvc0_fbcon_imageblit(info, image);
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mutex_unlock(&drm->client.mutex);
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}
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if (ret == 0)
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return;
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if (ret != -ENODEV)
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nouveau_fbcon_gpu_lockup(info);
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drm_fb_helper_cfb_imageblit(info, image);
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}
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static int
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nouveau_fbcon_sync(struct fb_info *info)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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struct nouveau_channel *chan = drm->channel;
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int ret;
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if (!chan || !chan->accel_done || in_interrupt() ||
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info->state != FBINFO_STATE_RUNNING ||
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info->flags & FBINFO_HWACCEL_DISABLED)
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return 0;
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if (!mutex_trylock(&drm->client.mutex))
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return 0;
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ret = nouveau_channel_idle(chan);
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mutex_unlock(&drm->client.mutex);
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if (ret) {
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nouveau_fbcon_gpu_lockup(info);
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return 0;
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}
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chan->accel_done = false;
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return 0;
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}
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static int
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nouveau_fbcon_open(struct fb_info *info, int user)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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int ret = pm_runtime_get_sync(drm->dev->dev);
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if (ret < 0 && ret != -EACCES)
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return ret;
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return 0;
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}
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static int
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nouveau_fbcon_release(struct fb_info *info, int user)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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pm_runtime_put(drm->dev->dev);
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return 0;
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}
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static struct fb_ops nouveau_fbcon_ops = {
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.owner = THIS_MODULE,
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DRM_FB_HELPER_DEFAULT_OPS,
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.fb_open = nouveau_fbcon_open,
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.fb_release = nouveau_fbcon_release,
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.fb_fillrect = nouveau_fbcon_fillrect,
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.fb_copyarea = nouveau_fbcon_copyarea,
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.fb_imageblit = nouveau_fbcon_imageblit,
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.fb_sync = nouveau_fbcon_sync,
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};
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static struct fb_ops nouveau_fbcon_sw_ops = {
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.owner = THIS_MODULE,
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DRM_FB_HELPER_DEFAULT_OPS,
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.fb_open = nouveau_fbcon_open,
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.fb_release = nouveau_fbcon_release,
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.fb_fillrect = drm_fb_helper_cfb_fillrect,
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.fb_copyarea = drm_fb_helper_cfb_copyarea,
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.fb_imageblit = drm_fb_helper_cfb_imageblit,
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};
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void
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nouveau_fbcon_accel_save_disable(struct drm_device *dev)
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{
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struct nouveau_drm *drm = nouveau_drm(dev);
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if (drm->fbcon && drm->fbcon->helper.fbdev) {
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drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
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drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
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}
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}
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void
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nouveau_fbcon_accel_restore(struct drm_device *dev)
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{
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struct nouveau_drm *drm = nouveau_drm(dev);
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if (drm->fbcon && drm->fbcon->helper.fbdev) {
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drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
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}
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}
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static void
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nouveau_fbcon_accel_fini(struct drm_device *dev)
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{
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struct nouveau_drm *drm = nouveau_drm(dev);
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struct nouveau_fbdev *fbcon = drm->fbcon;
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if (fbcon && drm->channel) {
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console_lock();
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if (fbcon->helper.fbdev)
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fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
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console_unlock();
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nouveau_channel_idle(drm->channel);
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nvif_object_fini(&fbcon->twod);
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nvif_object_fini(&fbcon->blit);
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nvif_object_fini(&fbcon->gdi);
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nvif_object_fini(&fbcon->patt);
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nvif_object_fini(&fbcon->rop);
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nvif_object_fini(&fbcon->clip);
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nvif_object_fini(&fbcon->surf2d);
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}
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}
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static void
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nouveau_fbcon_accel_init(struct drm_device *dev)
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{
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struct nouveau_drm *drm = nouveau_drm(dev);
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struct nouveau_fbdev *fbcon = drm->fbcon;
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struct fb_info *info = fbcon->helper.fbdev;
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int ret;
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if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
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ret = nv04_fbcon_accel_init(info);
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else
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if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
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ret = nv50_fbcon_accel_init(info);
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else
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ret = nvc0_fbcon_accel_init(info);
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if (ret == 0)
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info->fbops = &nouveau_fbcon_ops;
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}
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static void
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nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
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{
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struct fb_info *info = fbcon->helper.fbdev;
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struct fb_fillrect rect;
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/* Clear the entire fbcon. The drm will program every connector
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* with it's preferred mode. If the sizes differ, one display will
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* quite likely have garbage around the console.
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*/
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rect.dx = rect.dy = 0;
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rect.width = info->var.xres_virtual;
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rect.height = info->var.yres_virtual;
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rect.color = 0;
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rect.rop = ROP_COPY;
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info->fbops->fb_fillrect(info, &rect);
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}
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static int
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nouveau_fbcon_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 nouveau_fbdev *fbcon =
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container_of(helper, struct nouveau_fbdev, helper);
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struct drm_device *dev = fbcon->helper.dev;
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struct nouveau_drm *drm = nouveau_drm(dev);
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struct nvif_device *device = &drm->client.device;
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struct fb_info *info;
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struct nouveau_framebuffer *fb;
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struct nouveau_channel *chan;
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struct nouveau_bo *nvbo;
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struct drm_mode_fb_cmd2 mode_cmd;
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int ret;
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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] = mode_cmd.width * (sizes->surface_bpp >> 3);
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mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
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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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ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
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mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
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0, 0x0000, &nvbo);
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if (ret) {
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NV_ERROR(drm, "failed to allocate framebuffer\n");
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goto out;
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}
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ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
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if (ret)
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goto out_unref;
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ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
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if (ret) {
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NV_ERROR(drm, "failed to pin fb: %d\n", ret);
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goto out_unref;
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}
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ret = nouveau_bo_map(nvbo);
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if (ret) {
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NV_ERROR(drm, "failed to map fb: %d\n", ret);
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goto out_unpin;
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}
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chan = nouveau_nofbaccel ? NULL : drm->channel;
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if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
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ret = nouveau_vma_new(nvbo, &drm->client.vmm, &fb->vma);
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if (ret) {
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NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
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chan = NULL;
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}
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}
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info = drm_fb_helper_alloc_fbi(helper);
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if (IS_ERR(info)) {
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ret = PTR_ERR(info);
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goto out_unlock;
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}
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info->skip_vt_switch = 1;
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info->par = fbcon;
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/* setup helper */
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fbcon->helper.fb = &fb->base;
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strcpy(info->fix.id, "nouveaufb");
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if (!chan)
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info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
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else
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info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
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FBINFO_HWACCEL_FILLRECT |
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FBINFO_HWACCEL_IMAGEBLIT;
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info->flags |= FBINFO_CAN_FORCE_OUTPUT;
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info->fbops = &nouveau_fbcon_sw_ops;
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info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
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fb->nvbo->bo.mem.bus.offset;
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info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
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info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
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info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
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drm_fb_helper_fill_fix(info, fb->base.pitches[0],
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fb->base.format->depth);
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drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
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/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
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if (chan)
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nouveau_fbcon_accel_init(dev);
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nouveau_fbcon_zfill(dev, fbcon);
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/* To allow resizeing without swapping buffers */
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NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
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fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
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vga_switcheroo_client_fb_set(dev->pdev, info);
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return 0;
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out_unlock:
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if (chan)
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nouveau_vma_del(&fb->vma);
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nouveau_bo_unmap(fb->nvbo);
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out_unpin:
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nouveau_bo_unpin(fb->nvbo);
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out_unref:
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nouveau_bo_ref(NULL, &fb->nvbo);
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out:
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return ret;
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}
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static int
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nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
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{
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struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
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drm_fb_helper_unregister_fbi(&fbcon->helper);
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drm_fb_helper_fini(&fbcon->helper);
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if (nouveau_fb && nouveau_fb->nvbo) {
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nouveau_vma_del(&nouveau_fb->vma);
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nouveau_bo_unmap(nouveau_fb->nvbo);
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nouveau_bo_unpin(nouveau_fb->nvbo);
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drm_framebuffer_unreference(&nouveau_fb->base);
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}
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return 0;
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}
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void nouveau_fbcon_gpu_lockup(struct fb_info *info)
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{
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struct nouveau_fbdev *fbcon = info->par;
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struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
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NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
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info->flags |= FBINFO_HWACCEL_DISABLED;
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}
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static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
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.fb_probe = nouveau_fbcon_create,
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};
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static void
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nouveau_fbcon_set_suspend_work(struct work_struct *work)
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{
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struct nouveau_drm *drm = container_of(work, typeof(*drm), fbcon_work);
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int state = READ_ONCE(drm->fbcon_new_state);
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if (state == FBINFO_STATE_RUNNING)
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pm_runtime_get_sync(drm->dev->dev);
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console_lock();
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if (state == FBINFO_STATE_RUNNING)
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nouveau_fbcon_accel_restore(drm->dev);
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drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
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if (state != FBINFO_STATE_RUNNING)
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nouveau_fbcon_accel_save_disable(drm->dev);
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console_unlock();
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if (state == FBINFO_STATE_RUNNING) {
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pm_runtime_mark_last_busy(drm->dev->dev);
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pm_runtime_put_sync(drm->dev->dev);
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}
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}
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void
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nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
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{
|
|
struct nouveau_drm *drm = nouveau_drm(dev);
|
|
|
|
if (!drm->fbcon)
|
|
return;
|
|
|
|
drm->fbcon_new_state = state;
|
|
/* Since runtime resume can happen as a result of a sysfs operation,
|
|
* it's possible we already have the console locked. So handle fbcon
|
|
* init/deinit from a seperate work thread
|
|
*/
|
|
schedule_work(&drm->fbcon_work);
|
|
}
|
|
|
|
int
|
|
nouveau_fbcon_init(struct drm_device *dev)
|
|
{
|
|
struct nouveau_drm *drm = nouveau_drm(dev);
|
|
struct nouveau_fbdev *fbcon;
|
|
int preferred_bpp = nouveau_fbcon_bpp;
|
|
int ret;
|
|
|
|
if (!dev->mode_config.num_crtc ||
|
|
(dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
|
|
return 0;
|
|
|
|
fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
|
|
if (!fbcon)
|
|
return -ENOMEM;
|
|
|
|
drm->fbcon = fbcon;
|
|
INIT_WORK(&drm->fbcon_work, nouveau_fbcon_set_suspend_work);
|
|
|
|
drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
|
|
|
|
ret = drm_fb_helper_init(dev, &fbcon->helper, 4);
|
|
if (ret)
|
|
goto free;
|
|
|
|
ret = drm_fb_helper_single_add_all_connectors(&fbcon->helper);
|
|
if (ret)
|
|
goto fini;
|
|
|
|
if (preferred_bpp != 8 && preferred_bpp != 16 && preferred_bpp != 32) {
|
|
if (drm->client.device.info.ram_size <= 32 * 1024 * 1024)
|
|
preferred_bpp = 8;
|
|
else
|
|
if (drm->client.device.info.ram_size <= 64 * 1024 * 1024)
|
|
preferred_bpp = 16;
|
|
else
|
|
preferred_bpp = 32;
|
|
}
|
|
|
|
/* disable all the possible outputs/crtcs before entering KMS mode */
|
|
if (!drm_drv_uses_atomic_modeset(dev))
|
|
drm_helper_disable_unused_functions(dev);
|
|
|
|
ret = drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
|
|
if (ret)
|
|
goto fini;
|
|
|
|
if (fbcon->helper.fbdev)
|
|
fbcon->helper.fbdev->pixmap.buf_align = 4;
|
|
return 0;
|
|
|
|
fini:
|
|
drm_fb_helper_fini(&fbcon->helper);
|
|
free:
|
|
kfree(fbcon);
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
nouveau_fbcon_fini(struct drm_device *dev)
|
|
{
|
|
struct nouveau_drm *drm = nouveau_drm(dev);
|
|
|
|
if (!drm->fbcon)
|
|
return;
|
|
|
|
nouveau_fbcon_accel_fini(dev);
|
|
nouveau_fbcon_destroy(dev, drm->fbcon);
|
|
kfree(drm->fbcon);
|
|
drm->fbcon = NULL;
|
|
}
|