[linux-block.git] / drivers / gpu / drm / nouveau / nouveau_fbcon.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/fb.h>
#include <linux/init.h>
#include <linux/screen_info.h>
#include <linux/vga_switcheroo.h>

#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
#include "drm_fb_helper.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_crtc.h"
#include "nouveau_fb.h"
#include "nouveau_fbcon.h"
#include "nouveau_dma.h"

static void
nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&dev_priv->channel->mutex)) {
		if (dev_priv->card_type < NV_50)
			ret = nv04_fbcon_fillrect(info, rect);
		else
		if (dev_priv->card_type < NV_C0)
			ret = nv50_fbcon_fillrect(info, rect);
		else
			ret = nvc0_fbcon_fillrect(info, rect);
		mutex_unlock(&dev_priv->channel->mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_fillrect(info, rect);
}

static void
nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&dev_priv->channel->mutex)) {
		if (dev_priv->card_type < NV_50)
			ret = nv04_fbcon_copyarea(info, image);
		else
		if (dev_priv->card_type < NV_C0)
			ret = nv50_fbcon_copyarea(info, image);
		else
			ret = nvc0_fbcon_copyarea(info, image);
		mutex_unlock(&dev_priv->channel->mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_copyarea(info, image);
}

static void
nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&dev_priv->channel->mutex)) {
		if (dev_priv->card_type < NV_50)
			ret = nv04_fbcon_imageblit(info, image);
		else
		if (dev_priv->card_type < NV_C0)
			ret = nv50_fbcon_imageblit(info, image);
		else
			ret = nvc0_fbcon_imageblit(info, image);
		mutex_unlock(&dev_priv->channel->mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_imageblit(info, image);
}

static int
nouveau_fbcon_sync(struct fb_info *info)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_channel *chan = dev_priv->channel;
	int ret, i;

	if (!chan || !chan->accel_done || in_interrupt() ||
	    info->state != FBINFO_STATE_RUNNING ||
	    info->flags & FBINFO_HWACCEL_DISABLED)
		return 0;

	if (!mutex_trylock(&chan->mutex))
		return 0;

	ret = RING_SPACE(chan, 4);
	if (ret) {
		mutex_unlock(&chan->mutex);
		nouveau_fbcon_gpu_lockup(info);
		return 0;
	}

	if (dev_priv->card_type >= NV_C0) {
		BEGIN_NVC0(chan, 2, NvSub2D, 0x010c, 1);
		OUT_RING  (chan, 0);
		BEGIN_NVC0(chan, 2, NvSub2D, 0x0100, 1);
		OUT_RING  (chan, 0);
	} else {
		BEGIN_RING(chan, 0, 0x0104, 1);
		OUT_RING  (chan, 0);
		BEGIN_RING(chan, 0, 0x0100, 1);
		OUT_RING  (chan, 0);
	}

	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
	FIRE_RING(chan);
	mutex_unlock(&chan->mutex);

	ret = -EBUSY;
	for (i = 0; i < 100000; i++) {
		if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
			ret = 0;
			break;
		}
		DRM_UDELAY(1);
	}

	if (ret) {
		nouveau_fbcon_gpu_lockup(info);
		return 0;
	}

	chan->accel_done = false;
	return 0;
}

static struct fb_ops nouveau_fbcon_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_fillrect = nouveau_fbcon_fillrect,
	.fb_copyarea = nouveau_fbcon_copyarea,
	.fb_imageblit = nouveau_fbcon_imageblit,
	.fb_sync = nouveau_fbcon_sync,
	.fb_pan_display = drm_fb_helper_pan_display,
	.fb_blank = drm_fb_helper_blank,
	.fb_setcmap = drm_fb_helper_setcmap,
	.fb_debug_enter = drm_fb_helper_debug_enter,
	.fb_debug_leave = drm_fb_helper_debug_leave,
};

static struct fb_ops nouveau_fbcon_sw_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_fillrect = cfb_fillrect,
	.fb_copyarea = cfb_copyarea,
	.fb_imageblit = cfb_imageblit,
	.fb_pan_display = drm_fb_helper_pan_display,
	.fb_blank = drm_fb_helper_blank,
	.fb_setcmap = drm_fb_helper_setcmap,
	.fb_debug_enter = drm_fb_helper_debug_enter,
	.fb_debug_leave = drm_fb_helper_debug_leave,
};

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 *nfbdev)
{
	struct fb_info *info = nfbdev->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 nouveau_fbdev *nfbdev,
		     struct drm_fb_helper_surface_size *sizes)
{
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct fb_info *info;
	struct drm_framebuffer *fb;
	struct nouveau_framebuffer *nouveau_fb;
	struct nouveau_bo *nvbo;
	struct drm_mode_fb_cmd mode_cmd;
	struct pci_dev *pdev = dev->pdev;
	struct device *device = &pdev->dev;
	int size, ret;

	mode_cmd.width = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;

	mode_cmd.bpp = sizes->surface_bpp;
	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
	mode_cmd.depth = sizes->surface_depth;

	size = mode_cmd.pitch * mode_cmd.height;
	size = roundup(size, PAGE_SIZE);

	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0,
			      NOUVEAU_GEM_DOMAIN_VRAM, 0, 0x0000, &nvbo);
	if (ret) {
		NV_ERROR(dev, "failed to allocate framebuffer\n");
		goto out;
	}

	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	if (ret) {
		NV_ERROR(dev, "failed to pin fb: %d\n", ret);
		nouveau_bo_ref(NULL, &nvbo);
		goto out;
	}

	ret = nouveau_bo_map(nvbo);
	if (ret) {
		NV_ERROR(dev, "failed to map fb: %d\n", ret);
		nouveau_bo_unpin(nvbo);
		nouveau_bo_ref(NULL, &nvbo);
		goto out;
	}

	mutex_lock(&dev->struct_mutex);

	info = framebuffer_alloc(0, device);
	if (!info) {
		ret = -ENOMEM;
		goto out_unref;
	}

	ret = fb_alloc_cmap(&info->cmap, 256, 0);
	if (ret) {
		ret = -ENOMEM;
		goto out_unref;
	}

	info->par = nfbdev;

	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);

	nouveau_fb = &nfbdev->nouveau_fb;
	fb = &nouveau_fb->base;

	/* setup helper */
	nfbdev->helper.fb = fb;
	nfbdev->helper.fbdev = info;

	strcpy(info->fix.id, "nouveaufb");
	if (nouveau_nofbaccel)
		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 = nvbo->bo.mem.bus.base +
			       nvbo->bo.mem.bus.offset;
	info->fix.smem_len = size;

	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	info->screen_size = size;

	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);

	/* Set aperture base/size for vesafb takeover */
	info->apertures = dev_priv->apertures;
	if (!info->apertures) {
		ret = -ENOMEM;
		goto out_unref;
	}

	info->pixmap.size = 64*1024;
	info->pixmap.buf_align = 8;
	info->pixmap.access_align = 32;
	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	info->pixmap.scan_align = 1;

	mutex_unlock(&dev->struct_mutex);

	if (dev_priv->channel && !nouveau_nofbaccel) {
		ret = -ENODEV;
		if (dev_priv->card_type < NV_50)
			ret = nv04_fbcon_accel_init(info);
		else
		if (dev_priv->card_type < NV_C0)
			ret = nv50_fbcon_accel_init(info);
		else
			ret = nvc0_fbcon_accel_init(info);

		if (ret == 0)
			info->fbops = &nouveau_fbcon_ops;
	}

	nouveau_fbcon_zfill(dev, nfbdev);

	/* To allow resizeing without swapping buffers */
	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
						nouveau_fb->base.width,
						nouveau_fb->base.height,
						nvbo->bo.offset, nvbo);

	vga_switcheroo_client_fb_set(dev->pdev, info);
	return 0;

out_unref:
	mutex_unlock(&dev->struct_mutex);
out:
	return ret;
}

static int
nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
				    struct drm_fb_helper_surface_size *sizes)
{
	struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
	int new_fb = 0;
	int ret;

	if (!helper->fb) {
		ret = nouveau_fbcon_create(nfbdev, sizes);
		if (ret)
			return ret;
		new_fb = 1;
	}
	return new_fb;
}

void
nouveau_fbcon_output_poll_changed(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
}

static int
nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
{
	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
	struct fb_info *info;

	if (nfbdev->helper.fbdev) {
		info = nfbdev->helper.fbdev;
		unregister_framebuffer(info);
		if (info->cmap.len)
			fb_dealloc_cmap(&info->cmap);
		framebuffer_release(info);
	}

	if (nouveau_fb->nvbo) {
		nouveau_bo_unmap(nouveau_fb->nvbo);
		drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
		nouveau_fb->nvbo = NULL;
	}
	drm_fb_helper_fini(&nfbdev->helper);
	drm_framebuffer_cleanup(&nouveau_fb->base);
	return 0;
}

void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;

	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	info->flags |= FBINFO_HWACCEL_DISABLED;
}

static 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_find_or_create_single,
};


int nouveau_fbcon_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fbdev *nfbdev;
	int ret;

	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	if (!nfbdev)
		return -ENOMEM;

	nfbdev->dev = dev;
	dev_priv->nfbdev = nfbdev;
	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;

	ret = drm_fb_helper_init(dev, &nfbdev->helper,
				 nv_two_heads(dev) ? 2 : 1, 4);
	if (ret) {
		kfree(nfbdev);
		return ret;
	}

	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
	drm_fb_helper_initial_config(&nfbdev->helper, 32);
	return 0;
}

void nouveau_fbcon_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (!dev_priv->nfbdev)
		return;

	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
	kfree(dev_priv->nfbdev);
	dev_priv->nfbdev = NULL;
}

void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
}

void nouveau_fbcon_restore_accel(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
}

void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
}

void nouveau_fbcon_zfill_all(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
}
Commit	Line	Data
6ee73861 BS	1	/*
	2	* Copyright © 2007 David Airlie
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the next
	12	* paragraph) shall be included in all copies or substantial portions of the
	13	* Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	21	* DEALINGS IN THE SOFTWARE.
	22	*
	23	* Authors:
	24	* David Airlie
	25	*/
	26
	27	#include <linux/module.h>
	28	#include <linux/kernel.h>
	29	#include <linux/errno.h>
	30	#include <linux/string.h>
	31	#include <linux/mm.h>
	32	#include <linux/tty.h>
6ee73861 BS	33	#include <linux/sysrq.h>
	34	#include <linux/delay.h>
	35	#include <linux/fb.h>
	36	#include <linux/init.h>
	37	#include <linux/screen_info.h>
6a9ee8af	38	#include <linux/vga_switcheroo.h>
6ee73861 BS	39
	40	#include "drmP.h"
	41	#include "drm.h"
	42	#include "drm_crtc.h"
	43	#include "drm_crtc_helper.h"
	44	#include "drm_fb_helper.h"
	45	#include "nouveau_drv.h"
	46	#include "nouveau_drm.h"
	47	#include "nouveau_crtc.h"
	48	#include "nouveau_fb.h"
	49	#include "nouveau_fbcon.h"
	50	#include "nouveau_dma.h"
	51
ceed5f30 BS	52	static void
	53	nouveau_fbcon_fillrect(struct fb_info info, const struct fb_fillrect rect)
	54	{
	55	struct nouveau_fbdev *nfbdev = info->par;
	56	struct drm_device *dev = nfbdev->dev;
	57	struct drm_nouveau_private *dev_priv = dev->dev_private;
	58	int ret;
	59
	60	if (info->state != FBINFO_STATE_RUNNING)
	61	return;
	62
	63	ret = -ENODEV;
9acc8100 BS	64	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	65	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	66	if (dev_priv->card_type < NV_50)
	67	ret = nv04_fbcon_fillrect(info, rect);
	68	else
	69	if (dev_priv->card_type < NV_C0)
	70	ret = nv50_fbcon_fillrect(info, rect);
ddbaf79a BS	71	else
ddbaf79a BS	72	ret = nvc0_fbcon_fillrect(info, rect);
6a6b73f2	73	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	74	}
	75
	76	if (ret == 0)
	77	return;
	78
	79	if (ret != -ENODEV)
	80	nouveau_fbcon_gpu_lockup(info);
	81	cfb_fillrect(info, rect);
	82	}
	83
	84	static void
	85	nouveau_fbcon_copyarea(struct fb_info info, const struct fb_copyarea image)
	86	{
	87	struct nouveau_fbdev *nfbdev = info->par;
	88	struct drm_device *dev = nfbdev->dev;
	89	struct drm_nouveau_private *dev_priv = dev->dev_private;
	90	int ret;
	91
	92	if (info->state != FBINFO_STATE_RUNNING)
	93	return;
	94
	95	ret = -ENODEV;
9acc8100 BS	96	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	97	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	98	if (dev_priv->card_type < NV_50)
	99	ret = nv04_fbcon_copyarea(info, image);
	100	else
	101	if (dev_priv->card_type < NV_C0)
	102	ret = nv50_fbcon_copyarea(info, image);
ddbaf79a BS	103	else
ddbaf79a BS	104	ret = nvc0_fbcon_copyarea(info, image);
6a6b73f2	105	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	106	}
	107
	108	if (ret == 0)
	109	return;
	110
	111	if (ret != -ENODEV)
	112	nouveau_fbcon_gpu_lockup(info);
	113	cfb_copyarea(info, image);
	114	}
	115
	116	static void
	117	nouveau_fbcon_imageblit(struct fb_info info, const struct fb_image image)
	118	{
	119	struct nouveau_fbdev *nfbdev = info->par;
	120	struct drm_device *dev = nfbdev->dev;
	121	struct drm_nouveau_private *dev_priv = dev->dev_private;
	122	int ret;
	123
	124	if (info->state != FBINFO_STATE_RUNNING)
	125	return;
	126
	127	ret = -ENODEV;
9acc8100 BS	128	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	129	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	130	if (dev_priv->card_type < NV_50)
	131	ret = nv04_fbcon_imageblit(info, image);
	132	else
	133	if (dev_priv->card_type < NV_C0)
	134	ret = nv50_fbcon_imageblit(info, image);
ddbaf79a BS	135	else
ddbaf79a BS	136	ret = nvc0_fbcon_imageblit(info, image);
6a6b73f2	137	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	138	}
	139
	140	if (ret == 0)
	141	return;
	142
	143	if (ret != -ENODEV)
	144	nouveau_fbcon_gpu_lockup(info);
	145	cfb_imageblit(info, image);
	146	}
	147
6ee73861 BS	148	static int
	149	nouveau_fbcon_sync(struct fb_info *info)
	150	{
8be48d92 DA	151	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	152	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	153	struct drm_nouveau_private *dev_priv = dev->dev_private;
	154	struct nouveau_channel *chan = dev_priv->channel;
	155	int ret, i;
	156
6a6b73f2	157	if (!chan \|\| !chan->accel_done \|\| in_interrupt() \|\|
6ee73861 BS	158	info->state != FBINFO_STATE_RUNNING \|\|
	159	info->flags & FBINFO_HWACCEL_DISABLED)
	160	return 0;
	161
9acc8100 BS	162	if (!mutex_trylock(&chan->mutex))
	163	return 0;
	164
6a6b73f2 BS	165	ret = RING_SPACE(chan, 4);
	166	if (ret) {
	167	mutex_unlock(&chan->mutex);
846975a9	168	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	169	return 0;
	170	}
	171
ddbaf79a BS	172	if (dev_priv->card_type >= NV_C0) {
	173	BEGIN_NVC0(chan, 2, NvSub2D, 0x010c, 1);
	174	OUT_RING (chan, 0);
	175	BEGIN_NVC0(chan, 2, NvSub2D, 0x0100, 1);
	176	OUT_RING (chan, 0);
	177	} else {
	178	BEGIN_RING(chan, 0, 0x0104, 1);
	179	OUT_RING (chan, 0);
	180	BEGIN_RING(chan, 0, 0x0100, 1);
	181	OUT_RING (chan, 0);
	182	}
	183
a18d89ca	184	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
6ee73861	185	FIRE_RING(chan);
6a6b73f2	186	mutex_unlock(&chan->mutex);
6ee73861 BS	187
	188	ret = -EBUSY;
	189	for (i = 0; i < 100000; i++) {
a18d89ca	190	if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
6ee73861 BS	191	ret = 0;
	192	break;
	193	}
	194	DRM_UDELAY(1);
	195	}
	196
	197	if (ret) {
846975a9	198	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	199	return 0;
	200	}
	201
	202	chan->accel_done = false;
	203	return 0;
	204	}
	205
	206	static struct fb_ops nouveau_fbcon_ops = {
	207	.owner = THIS_MODULE,
	208	.fb_check_var = drm_fb_helper_check_var,
	209	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	210	.fb_fillrect = nouveau_fbcon_fillrect,
	211	.fb_copyarea = nouveau_fbcon_copyarea,
	212	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	213	.fb_sync = nouveau_fbcon_sync,
	214	.fb_pan_display = drm_fb_helper_pan_display,
	215	.fb_blank = drm_fb_helper_blank,
	216	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	217	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	218	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	219	};
6ee73861 BS	220
ceed5f30	221	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	222	.owner = THIS_MODULE,
	223	.fb_check_var = drm_fb_helper_check_var,
	224	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	225	.fb_fillrect = cfb_fillrect,
	226	.fb_copyarea = cfb_copyarea,
	227	.fb_imageblit = cfb_imageblit,
126b5440 MK	228	.fb_pan_display = drm_fb_helper_pan_display,
	229	.fb_blank = drm_fb_helper_blank,
	230	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	231	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	232	.fb_debug_leave = drm_fb_helper_debug_leave,
126b5440 MK	233	};
126b5440 MK	234
6ee73861 BS	235	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	236	u16 blue, int regno)
	237	{
	238	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	239
	240	nv_crtc->lut.r[regno] = red;
	241	nv_crtc->lut.g[regno] = green;
	242	nv_crtc->lut.b[regno] = blue;
	243	}
	244
	245	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	246	u16 *blue, int regno)
	247	{
	248	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	249
	250	*red = nv_crtc->lut.r[regno];
	251	*green = nv_crtc->lut.g[regno];
	252	*blue = nv_crtc->lut.b[regno];
	253	}
	254
38651674	255	static void
8be48d92	256	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	257	{
8be48d92	258	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	259	struct fb_fillrect rect;
	260
	261	/* Clear the entire fbcon. The drm will program every connector
	262	* with it's preferred mode. If the sizes differ, one display will
	263	* quite likely have garbage around the console.
	264	*/
	265	rect.dx = rect.dy = 0;
	266	rect.width = info->var.xres_virtual;
	267	rect.height = info->var.yres_virtual;
	268	rect.color = 0;
	269	rect.rop = ROP_COPY;
	270	info->fbops->fb_fillrect(info, &rect);
	271	}
	272
	273	static int
8be48d92 DA	274	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	275	struct drm_fb_helper_surface_size *sizes)
6ee73861	276	{
8be48d92	277	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	278	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	279	struct fb_info *info;
6ee73861 BS	280	struct drm_framebuffer *fb;
	281	struct nouveau_framebuffer *nouveau_fb;
	282	struct nouveau_bo *nvbo;
	283	struct drm_mode_fb_cmd mode_cmd;
1471ca9a MS	284	struct pci_dev *pdev = dev->pdev;
1471ca9a MS	285	struct device *device = &pdev->dev;
6ee73861 BS	286	int size, ret;
6ee73861 BS	287
38651674 DA	288	mode_cmd.width = sizes->surface_width;
38651674 DA	289	mode_cmd.height = sizes->surface_height;
6ee73861	290
38651674	291	mode_cmd.bpp = sizes->surface_bpp;
6ee73861	292	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
1c7059e4	293	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
38651674	294	mode_cmd.depth = sizes->surface_depth;
6ee73861 BS	295
6ee73861 BS	296	size = mode_cmd.pitch * mode_cmd.height;
1c7059e4	297	size = roundup(size, PAGE_SIZE);
6ee73861	298
6ba9a683 BS	299	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0,
6ba9a683 BS	300	NOUVEAU_GEM_DOMAIN_VRAM, 0, 0x0000, &nvbo);
6ee73861 BS	301	if (ret) {
	302	NV_ERROR(dev, "failed to allocate framebuffer\n");
	303	goto out;
	304	}
	305
	306	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	307	if (ret) {
	308	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	309	nouveau_bo_ref(NULL, &nvbo);
	310	goto out;
	311	}
	312
	313	ret = nouveau_bo_map(nvbo);
	314	if (ret) {
	315	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	316	nouveau_bo_unpin(nvbo);
	317	nouveau_bo_ref(NULL, &nvbo);
	318	goto out;
	319	}
	320
	321	mutex_lock(&dev->struct_mutex);
	322
8be48d92	323	info = framebuffer_alloc(0, device);
6ee73861	324	if (!info) {
6ee73861	325	ret = -ENOMEM;
6ee73861 BS	326	goto out_unref;
	327	}
	328
4abe3520 DA	329	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	330	if (ret) {
6ee73861 BS	331	ret = -ENOMEM;
	332	goto out_unref;
	333	}
	334
8be48d92	335	info->par = nfbdev;
38651674	336
8be48d92	337	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	338
8be48d92 DA	339	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	340	fb = &nouveau_fb->base;
38651674	341
8be48d92 DA	342	/* setup helper */
	343	nfbdev->helper.fb = fb;
	344	nfbdev->helper.fbdev = info;
6ee73861 BS	345
6ee73861 BS	346	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	347	if (nouveau_nofbaccel)
	348	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	349	else
	350	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	351	FBINFO_HWACCEL_FILLRECT \|
	352	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	353	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	354	info->fbops = &nouveau_fbcon_sw_ops;
f01a9720 BS	355	info->fix.smem_start = nvbo->bo.mem.bus.base +
f01a9720 BS	356	nvbo->bo.mem.bus.offset;
6ee73861 BS	357	info->fix.smem_len = size;
	358
	359	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	360	info->screen_size = size;
	361
3632ef89	362	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
8be48d92	363	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861	364
6ee73861	365	/* Set aperture base/size for vesafb takeover */
06415c56	366	info->apertures = dev_priv->apertures;
1471ca9a MS	367	if (!info->apertures) {
	368	ret = -ENOMEM;
	369	goto out_unref;
	370	}
	371
6ee73861 BS	372	info->pixmap.size = 64*1024;
	373	info->pixmap.buf_align = 8;
	374	info->pixmap.access_align = 32;
	375	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	376	info->pixmap.scan_align = 1;
	377
6a6b73f2 BS	378	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	379
a32ed69d	380	if (dev_priv->channel && !nouveau_nofbaccel) {
ceed5f30 BS	381	ret = -ENODEV;
	382	if (dev_priv->card_type < NV_50)
	383	ret = nv04_fbcon_accel_init(info);
	384	else
	385	if (dev_priv->card_type < NV_C0)
	386	ret = nv50_fbcon_accel_init(info);
ddbaf79a BS	387	else
ddbaf79a BS	388	ret = nvc0_fbcon_accel_init(info);
ceed5f30 BS	389
	390	if (ret == 0)
	391	info->fbops = &nouveau_fbcon_ops;
0735f62e	392	}
6ee73861	393
8be48d92	394	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	395
	396	/* To allow resizeing without swapping buffers */
	397	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	398	nouveau_fb->base.width,
	399	nouveau_fb->base.height,
	400	nvbo->bo.offset, nvbo);
	401
6a9ee8af	402	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	403	return 0;
	404
	405	out_unref:
	406	mutex_unlock(&dev->struct_mutex);
	407	out:
	408	return ret;
	409	}
	410
38651674	411	static int
8be48d92 DA	412	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	413	struct drm_fb_helper_surface_size *sizes)
6ee73861	414	{
8be48d92	415	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	416	int new_fb = 0;
	417	int ret;
	418
8be48d92 DA	419	if (!helper->fb) {
8be48d92 DA	420	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	421	if (ret)
38651674 DA	422	return ret;
38651674	423	new_fb = 1;
38651674	424	}
38651674 DA	425	return new_fb;
38651674 DA	426	}
6ee73861	427
eb1f8e4f DA	428	void
eb1f8e4f DA	429	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	430	{
4abe3520	431	struct drm_nouveau_private *dev_priv = dev->dev_private;
eb1f8e4f	432	drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
6ee73861 BS	433	}
6ee73861 BS	434
6e86e041	435	static int
8be48d92	436	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	437	{
8be48d92	438	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	439	struct fb_info *info;
6ee73861 BS	440
8be48d92 DA	441	if (nfbdev->helper.fbdev) {
8be48d92 DA	442	info = nfbdev->helper.fbdev;
6ee73861	443	unregister_framebuffer(info);
4abe3520 DA	444	if (info->cmap.len)
4abe3520 DA	445	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	446	framebuffer_release(info);
8be48d92 DA	447	}
6ee73861	448
8be48d92	449	if (nouveau_fb->nvbo) {
6ee73861	450	nouveau_bo_unmap(nouveau_fb->nvbo);
bc9025bd	451	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	452	nouveau_fb->nvbo = NULL;
6ee73861	453	}
4abe3520	454	drm_fb_helper_fini(&nfbdev->helper);
38651674	455	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	456	return 0;
6ee73861 BS	457	}
846975a9 MS	458
	459	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	460	{
8be48d92 DA	461	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	462	struct drm_device *dev = nfbdev->dev;
846975a9 MS	463
	464	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	465	info->flags \|= FBINFO_HWACCEL_DISABLED;
	466	}
38651674	467
4abe3520 DA	468	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	469	.gamma_set = nouveau_fbcon_gamma_set,
	470	.gamma_get = nouveau_fbcon_gamma_get,
	471	.fb_probe = nouveau_fbcon_find_or_create_single,
4abe3520 DA	472	};
	473
	474
38651674 DA	475	int nouveau_fbcon_init(struct drm_device *dev)
38651674 DA	476	{
8be48d92 DA	477	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	478	struct nouveau_fbdev *nfbdev;
5a79395b	479	int ret;
8be48d92 DA	480
	481	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	482	if (!nfbdev)
	483	return -ENOMEM;
	484
	485	nfbdev->dev = dev;
	486	dev_priv->nfbdev = nfbdev;
4abe3520	487	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	488
77144554 FJ	489	ret = drm_fb_helper_init(dev, &nfbdev->helper,
77144554 FJ	490	nv_two_heads(dev) ? 2 : 1, 4);
5a79395b CW	491	if (ret) {
	492	kfree(nfbdev);
	493	return ret;
	494	}
	495
0b4c0f3f	496	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
4abe3520	497	drm_fb_helper_initial_config(&nfbdev->helper, 32);
38651674 DA	498	return 0;
	499	}
	500
	501	void nouveau_fbcon_fini(struct drm_device *dev)
	502	{
	503	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	504
	505	if (!dev_priv->nfbdev)
	506	return;
	507
38651674	508	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	509	kfree(dev_priv->nfbdev);
38651674 DA	510	dev_priv->nfbdev = NULL;
	511	}
	512
	513	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	514	{
	515	struct drm_nouveau_private *dev_priv = dev->dev_private;
	516
	517	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	518	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	519	}
	520
	521	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	522	{
	523	struct drm_nouveau_private *dev_priv = dev->dev_private;
	524	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	525	}
	526
	527	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	528	{
	529	struct drm_nouveau_private *dev_priv = dev->dev_private;
	530	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
	531	}
	532
	533	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	534	{
	535	struct drm_nouveau_private *dev_priv = dev->dev_private;
	536	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	537	}