linux-stable/drivers/gpu/drm/nouveau/nouveau_fbcon.c
Ben Skeggs 1167c6bc51 drm/nouveau: allocate device object for every client
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2017-02-17 15:15:04 +10:00

558 lines
15 KiB
C

/*
* Copyright © 2007 David Airlie
*
* 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, sublicense,
* 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 above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* David Airlie
*/
#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 <linux/screen_info.h>
#include <linux/vga_switcheroo.h>
#include <linux/console.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_atomic.h>
#include "nouveau_drv.h"
#include "nouveau_gem.h"
#include "nouveau_bo.h"
#include "nouveau_fbcon.h"
#include "nouveau_chan.h"
#include "nouveau_crtc.h"
MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
int nouveau_nofbaccel = 0;
module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
static void
nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
struct nvif_device *device = &drm->client.device;
int ret;
if (info->state != FBINFO_STATE_RUNNING)
return;
ret = -ENODEV;
if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
mutex_trylock(&drm->client.mutex)) {
if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ret = nv04_fbcon_fillrect(info, rect);
else
if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ret = nv50_fbcon_fillrect(info, rect);
else
ret = nvc0_fbcon_fillrect(info, rect);
mutex_unlock(&drm->client.mutex);
}
if (ret == 0)
return;
if (ret != -ENODEV)
nouveau_fbcon_gpu_lockup(info);
drm_fb_helper_cfb_fillrect(info, rect);
}
static void
nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
struct nvif_device *device = &drm->client.device;
int ret;
if (info->state != FBINFO_STATE_RUNNING)
return;
ret = -ENODEV;
if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
mutex_trylock(&drm->client.mutex)) {
if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ret = nv04_fbcon_copyarea(info, image);
else
if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ret = nv50_fbcon_copyarea(info, image);
else
ret = nvc0_fbcon_copyarea(info, image);
mutex_unlock(&drm->client.mutex);
}
if (ret == 0)
return;
if (ret != -ENODEV)
nouveau_fbcon_gpu_lockup(info);
drm_fb_helper_cfb_copyarea(info, image);
}
static void
nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
struct nvif_device *device = &drm->client.device;
int ret;
if (info->state != FBINFO_STATE_RUNNING)
return;
ret = -ENODEV;
if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
mutex_trylock(&drm->client.mutex)) {
if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ret = nv04_fbcon_imageblit(info, image);
else
if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ret = nv50_fbcon_imageblit(info, image);
else
ret = nvc0_fbcon_imageblit(info, image);
mutex_unlock(&drm->client.mutex);
}
if (ret == 0)
return;
if (ret != -ENODEV)
nouveau_fbcon_gpu_lockup(info);
drm_fb_helper_cfb_imageblit(info, image);
}
static int
nouveau_fbcon_sync(struct fb_info *info)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
struct nouveau_channel *chan = drm->channel;
int ret;
if (!chan || !chan->accel_done || in_interrupt() ||
info->state != FBINFO_STATE_RUNNING ||
info->flags & FBINFO_HWACCEL_DISABLED)
return 0;
if (!mutex_trylock(&drm->client.mutex))
return 0;
ret = nouveau_channel_idle(chan);
mutex_unlock(&drm->client.mutex);
if (ret) {
nouveau_fbcon_gpu_lockup(info);
return 0;
}
chan->accel_done = false;
return 0;
}
static int
nouveau_fbcon_open(struct fb_info *info, int user)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
int ret = pm_runtime_get_sync(drm->dev->dev);
if (ret < 0 && ret != -EACCES)
return ret;
return 0;
}
static int
nouveau_fbcon_release(struct fb_info *info, int user)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
pm_runtime_put(drm->dev->dev);
return 0;
}
static struct fb_ops nouveau_fbcon_ops = {
.owner = THIS_MODULE,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_open = nouveau_fbcon_open,
.fb_release = nouveau_fbcon_release,
.fb_fillrect = nouveau_fbcon_fillrect,
.fb_copyarea = nouveau_fbcon_copyarea,
.fb_imageblit = nouveau_fbcon_imageblit,
.fb_sync = nouveau_fbcon_sync,
};
static struct fb_ops nouveau_fbcon_sw_ops = {
.owner = THIS_MODULE,
DRM_FB_HELPER_DEFAULT_OPS,
.fb_open = nouveau_fbcon_open,
.fb_release = nouveau_fbcon_release,
.fb_fillrect = drm_fb_helper_cfb_fillrect,
.fb_copyarea = drm_fb_helper_cfb_copyarea,
.fb_imageblit = drm_fb_helper_cfb_imageblit,
};
void
nouveau_fbcon_accel_save_disable(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
if (drm->fbcon) {
drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
}
}
void
nouveau_fbcon_accel_restore(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
if (drm->fbcon) {
drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
}
}
static void
nouveau_fbcon_accel_fini(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_fbdev *fbcon = drm->fbcon;
if (fbcon && drm->channel) {
console_lock();
fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
console_unlock();
nouveau_channel_idle(drm->channel);
nvif_object_fini(&fbcon->twod);
nvif_object_fini(&fbcon->blit);
nvif_object_fini(&fbcon->gdi);
nvif_object_fini(&fbcon->patt);
nvif_object_fini(&fbcon->rop);
nvif_object_fini(&fbcon->clip);
nvif_object_fini(&fbcon->surf2d);
}
}
static void
nouveau_fbcon_accel_init(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_fbdev *fbcon = drm->fbcon;
struct fb_info *info = fbcon->helper.fbdev;
int ret;
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA)
ret = nv04_fbcon_accel_init(info);
else
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI)
ret = nv50_fbcon_accel_init(info);
else
ret = nvc0_fbcon_accel_init(info);
if (ret == 0)
info->fbops = &nouveau_fbcon_ops;
}
static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
nv_crtc->lut.r[regno] = red;
nv_crtc->lut.g[regno] = green;
nv_crtc->lut.b[regno] = blue;
}
static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, int regno)
{
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
*red = nv_crtc->lut.r[regno];
*green = nv_crtc->lut.g[regno];
*blue = nv_crtc->lut.b[regno];
}
static void
nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
{
struct fb_info *info = fbcon->helper.fbdev;
struct fb_fillrect rect;
/* Clear the entire fbcon. The drm will program every connector
* with it's preferred mode. If the sizes differ, one display will
* quite likely have garbage around the console.
*/
rect.dx = rect.dy = 0;
rect.width = info->var.xres_virtual;
rect.height = info->var.yres_virtual;
rect.color = 0;
rect.rop = ROP_COPY;
info->fbops->fb_fillrect(info, &rect);
}
static int
nouveau_fbcon_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct nouveau_fbdev *fbcon =
container_of(helper, struct nouveau_fbdev, helper);
struct drm_device *dev = fbcon->helper.dev;
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvif_device *device = &drm->client.device;
struct fb_info *info;
struct nouveau_framebuffer *fb;
struct nouveau_channel *chan;
struct nouveau_bo *nvbo;
struct drm_mode_fb_cmd2 mode_cmd;
int ret;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
ret = nouveau_gem_new(&drm->client, mode_cmd.pitches[0] *
mode_cmd.height, 0, NOUVEAU_GEM_DOMAIN_VRAM,
0, 0x0000, &nvbo);
if (ret) {
NV_ERROR(drm, "failed to allocate framebuffer\n");
goto out;
}
ret = nouveau_framebuffer_new(dev, &mode_cmd, nvbo, &fb);
if (ret)
goto out_unref;
ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, false);
if (ret) {
NV_ERROR(drm, "failed to pin fb: %d\n", ret);
goto out_unref;
}
ret = nouveau_bo_map(nvbo);
if (ret) {
NV_ERROR(drm, "failed to map fb: %d\n", ret);
goto out_unpin;
}
chan = nouveau_nofbaccel ? NULL : drm->channel;
if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
ret = nouveau_bo_vma_add(nvbo, drm->client.vm, &fb->vma);
if (ret) {
NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
chan = NULL;
}
}
info = drm_fb_helper_alloc_fbi(helper);
if (IS_ERR(info)) {
ret = PTR_ERR(info);
goto out_unlock;
}
info->skip_vt_switch = 1;
info->par = fbcon;
/* setup helper */
fbcon->helper.fb = &fb->base;
strcpy(info->fix.id, "nouveaufb");
if (!chan)
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
else
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT |
FBINFO_HWACCEL_IMAGEBLIT;
info->flags |= FBINFO_CAN_FORCE_OUTPUT;
info->fbops = &nouveau_fbcon_sw_ops;
info->fix.smem_start = fb->nvbo->bo.mem.bus.base +
fb->nvbo->bo.mem.bus.offset;
info->fix.smem_len = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
info->screen_base = nvbo_kmap_obj_iovirtual(fb->nvbo);
info->screen_size = fb->nvbo->bo.mem.num_pages << PAGE_SHIFT;
drm_fb_helper_fill_fix(info, fb->base.pitches[0],
fb->base.format->depth);
drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
if (chan)
nouveau_fbcon_accel_init(dev);
nouveau_fbcon_zfill(dev, fbcon);
/* To allow resizeing without swapping buffers */
NV_INFO(drm, "allocated %dx%d fb: 0x%llx, bo %p\n",
fb->base.width, fb->base.height, fb->nvbo->bo.offset, nvbo);
vga_switcheroo_client_fb_set(dev->pdev, info);
return 0;
out_unlock:
if (chan)
nouveau_bo_vma_del(fb->nvbo, &fb->vma);
nouveau_bo_unmap(fb->nvbo);
out_unpin:
nouveau_bo_unpin(fb->nvbo);
out_unref:
nouveau_bo_ref(NULL, &fb->nvbo);
out:
return ret;
}
void
nouveau_fbcon_output_poll_changed(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
if (drm->fbcon)
drm_fb_helper_hotplug_event(&drm->fbcon->helper);
}
static int
nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
{
struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fbcon->helper.fb);
drm_fb_helper_unregister_fbi(&fbcon->helper);
drm_fb_helper_release_fbi(&fbcon->helper);
drm_fb_helper_fini(&fbcon->helper);
if (nouveau_fb->nvbo) {
nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
nouveau_bo_unmap(nouveau_fb->nvbo);
nouveau_bo_unpin(nouveau_fb->nvbo);
drm_framebuffer_unreference(&nouveau_fb->base);
}
return 0;
}
void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
struct nouveau_fbdev *fbcon = info->par;
struct nouveau_drm *drm = nouveau_drm(fbcon->helper.dev);
NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
info->flags |= FBINFO_HWACCEL_DISABLED;
}
static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
.gamma_set = nouveau_fbcon_gamma_set,
.gamma_get = nouveau_fbcon_gamma_get,
.fb_probe = nouveau_fbcon_create,
};
void
nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
{
struct nouveau_drm *drm = nouveau_drm(dev);
if (drm->fbcon) {
console_lock();
if (state == FBINFO_STATE_RUNNING)
nouveau_fbcon_accel_restore(dev);
drm_fb_helper_set_suspend(&drm->fbcon->helper, state);
if (state != FBINFO_STATE_RUNNING)
nouveau_fbcon_accel_save_disable(dev);
console_unlock();
}
}
int
nouveau_fbcon_init(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
struct nouveau_fbdev *fbcon;
int preferred_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;
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 (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;
}