[mirror_ubuntu-focal-kernel.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_lock(&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);
		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_lock(&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);
		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_lock(&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);
		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;

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

	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 + 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 + 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, TTM_PL_FLAG_VRAM,
			      0, 0x0000, false, true, &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 = dev->mode_config.fb_base + nvbo->bo.offset -
			       dev_priv->vm_vram_base;
	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);

	/* FIXME: we really shouldn't expose mmio space at all */
	info->fix.mmio_start = pci_resource_start(pdev, 1);
	info->fix.mmio_len = pci_resource_len(pdev, 1);

	/* 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);

		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;
	64	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) {
6a6b73f2	65	mutex_lock(&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);
6a6b73f2	71	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	72	}
	73
	74	if (ret == 0)
	75	return;
	76
	77	if (ret != -ENODEV)
	78	nouveau_fbcon_gpu_lockup(info);
	79	cfb_fillrect(info, rect);
	80	}
	81
	82	static void
	83	nouveau_fbcon_copyarea(struct fb_info info, const struct fb_copyarea image)
	84	{
	85	struct nouveau_fbdev *nfbdev = info->par;
	86	struct drm_device *dev = nfbdev->dev;
	87	struct drm_nouveau_private *dev_priv = dev->dev_private;
	88	int ret;
	89
	90	if (info->state != FBINFO_STATE_RUNNING)
	91	return;
	92
	93	ret = -ENODEV;
	94	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) {
6a6b73f2	95	mutex_lock(&dev_priv->channel->mutex);
ceed5f30 BS	96	if (dev_priv->card_type < NV_50)
	97	ret = nv04_fbcon_copyarea(info, image);
	98	else
	99	if (dev_priv->card_type < NV_C0)
	100	ret = nv50_fbcon_copyarea(info, image);
6a6b73f2	101	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	102	}
	103
	104	if (ret == 0)
	105	return;
	106
	107	if (ret != -ENODEV)
	108	nouveau_fbcon_gpu_lockup(info);
	109	cfb_copyarea(info, image);
	110	}
	111
	112	static void
	113	nouveau_fbcon_imageblit(struct fb_info info, const struct fb_image image)
	114	{
	115	struct nouveau_fbdev *nfbdev = info->par;
	116	struct drm_device *dev = nfbdev->dev;
	117	struct drm_nouveau_private *dev_priv = dev->dev_private;
	118	int ret;
	119
	120	if (info->state != FBINFO_STATE_RUNNING)
	121	return;
	122
	123	ret = -ENODEV;
	124	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED)) {
6a6b73f2	125	mutex_lock(&dev_priv->channel->mutex);
ceed5f30 BS	126	if (dev_priv->card_type < NV_50)
	127	ret = nv04_fbcon_imageblit(info, image);
	128	else
	129	if (dev_priv->card_type < NV_C0)
	130	ret = nv50_fbcon_imageblit(info, image);
6a6b73f2	131	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	132	}
	133
	134	if (ret == 0)
	135	return;
	136
	137	if (ret != -ENODEV)
	138	nouveau_fbcon_gpu_lockup(info);
	139	cfb_imageblit(info, image);
	140	}
	141
6ee73861 BS	142	static int
	143	nouveau_fbcon_sync(struct fb_info *info)
	144	{
8be48d92 DA	145	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	146	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	147	struct drm_nouveau_private *dev_priv = dev->dev_private;
	148	struct nouveau_channel *chan = dev_priv->channel;
	149	int ret, i;
	150
6a6b73f2	151	if (!chan \|\| !chan->accel_done \|\| in_interrupt() \|\|
6ee73861 BS	152	info->state != FBINFO_STATE_RUNNING \|\|
	153	info->flags & FBINFO_HWACCEL_DISABLED)
	154	return 0;
	155
6a6b73f2 BS	156	mutex_lock(&chan->mutex);
	157	ret = RING_SPACE(chan, 4);
	158	if (ret) {
	159	mutex_unlock(&chan->mutex);
846975a9	160	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	161	return 0;
	162	}
	163
	164	BEGIN_RING(chan, 0, 0x0104, 1);
	165	OUT_RING(chan, 0);
	166	BEGIN_RING(chan, 0, 0x0100, 1);
	167	OUT_RING(chan, 0);
	168	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
	169	FIRE_RING(chan);
6a6b73f2	170	mutex_unlock(&chan->mutex);
6ee73861 BS	171
	172	ret = -EBUSY;
	173	for (i = 0; i < 100000; i++) {
	174	if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
	175	ret = 0;
	176	break;
	177	}
	178	DRM_UDELAY(1);
	179	}
	180
	181	if (ret) {
846975a9	182	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	183	return 0;
	184	}
	185
	186	chan->accel_done = false;
	187	return 0;
	188	}
	189
	190	static struct fb_ops nouveau_fbcon_ops = {
	191	.owner = THIS_MODULE,
	192	.fb_check_var = drm_fb_helper_check_var,
	193	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	194	.fb_fillrect = nouveau_fbcon_fillrect,
	195	.fb_copyarea = nouveau_fbcon_copyarea,
	196	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	197	.fb_sync = nouveau_fbcon_sync,
	198	.fb_pan_display = drm_fb_helper_pan_display,
	199	.fb_blank = drm_fb_helper_blank,
	200	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	201	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	202	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	203	};
6ee73861 BS	204
ceed5f30	205	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	206	.owner = THIS_MODULE,
	207	.fb_check_var = drm_fb_helper_check_var,
	208	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	209	.fb_fillrect = cfb_fillrect,
	210	.fb_copyarea = cfb_copyarea,
	211	.fb_imageblit = cfb_imageblit,
126b5440 MK	212	.fb_pan_display = drm_fb_helper_pan_display,
	213	.fb_blank = drm_fb_helper_blank,
	214	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	215	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	216	.fb_debug_leave = drm_fb_helper_debug_leave,
126b5440 MK	217	};
126b5440 MK	218
6ee73861 BS	219	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	220	u16 blue, int regno)
	221	{
	222	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	223
	224	nv_crtc->lut.r[regno] = red;
	225	nv_crtc->lut.g[regno] = green;
	226	nv_crtc->lut.b[regno] = blue;
	227	}
	228
	229	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	230	u16 *blue, int regno)
	231	{
	232	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	233
	234	*red = nv_crtc->lut.r[regno];
	235	*green = nv_crtc->lut.g[regno];
	236	*blue = nv_crtc->lut.b[regno];
	237	}
	238
38651674	239	static void
8be48d92	240	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	241	{
8be48d92	242	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	243	struct fb_fillrect rect;
	244
	245	/* Clear the entire fbcon. The drm will program every connector
	246	* with it's preferred mode. If the sizes differ, one display will
	247	* quite likely have garbage around the console.
	248	*/
	249	rect.dx = rect.dy = 0;
	250	rect.width = info->var.xres_virtual;
	251	rect.height = info->var.yres_virtual;
	252	rect.color = 0;
	253	rect.rop = ROP_COPY;
	254	info->fbops->fb_fillrect(info, &rect);
	255	}
	256
	257	static int
8be48d92 DA	258	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	259	struct drm_fb_helper_surface_size *sizes)
6ee73861	260	{
8be48d92	261	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	262	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	263	struct fb_info *info;
6ee73861 BS	264	struct drm_framebuffer *fb;
	265	struct nouveau_framebuffer *nouveau_fb;
	266	struct nouveau_bo *nvbo;
	267	struct drm_mode_fb_cmd mode_cmd;
1471ca9a MS	268	struct pci_dev *pdev = dev->pdev;
1471ca9a MS	269	struct device *device = &pdev->dev;
6ee73861 BS	270	int size, ret;
6ee73861 BS	271
38651674 DA	272	mode_cmd.width = sizes->surface_width;
38651674 DA	273	mode_cmd.height = sizes->surface_height;
6ee73861	274
38651674	275	mode_cmd.bpp = sizes->surface_bpp;
6ee73861	276	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
1c7059e4	277	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
38651674	278	mode_cmd.depth = sizes->surface_depth;
6ee73861 BS	279
6ee73861 BS	280	size = mode_cmd.pitch * mode_cmd.height;
1c7059e4	281	size = roundup(size, PAGE_SIZE);
6ee73861 BS	282
	283	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
	284	0, 0x0000, false, true, &nvbo);
	285	if (ret) {
	286	NV_ERROR(dev, "failed to allocate framebuffer\n");
	287	goto out;
	288	}
	289
	290	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	291	if (ret) {
	292	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	293	nouveau_bo_ref(NULL, &nvbo);
	294	goto out;
	295	}
	296
	297	ret = nouveau_bo_map(nvbo);
	298	if (ret) {
	299	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	300	nouveau_bo_unpin(nvbo);
	301	nouveau_bo_ref(NULL, &nvbo);
	302	goto out;
	303	}
	304
	305	mutex_lock(&dev->struct_mutex);
	306
8be48d92	307	info = framebuffer_alloc(0, device);
6ee73861	308	if (!info) {
6ee73861	309	ret = -ENOMEM;
6ee73861 BS	310	goto out_unref;
	311	}
	312
4abe3520 DA	313	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	314	if (ret) {
6ee73861 BS	315	ret = -ENOMEM;
	316	goto out_unref;
	317	}
	318
8be48d92	319	info->par = nfbdev;
38651674	320
8be48d92	321	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	322
8be48d92 DA	323	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	324	fb = &nouveau_fb->base;
38651674	325
8be48d92 DA	326	/* setup helper */
	327	nfbdev->helper.fb = fb;
	328	nfbdev->helper.fbdev = info;
6ee73861 BS	329
6ee73861 BS	330	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	331	if (nouveau_nofbaccel)
	332	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	333	else
	334	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	335	FBINFO_HWACCEL_FILLRECT \|
	336	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	337	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	338	info->fbops = &nouveau_fbcon_sw_ops;
6ee73861 BS	339	info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
	340	dev_priv->vm_vram_base;
	341	info->fix.smem_len = size;
	342
	343	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	344	info->screen_size = size;
	345
	346	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
8be48d92	347	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861 BS	348
6ee73861 BS	349	/* FIXME: we really shouldn't expose mmio space at all */
1471ca9a MS	350	info->fix.mmio_start = pci_resource_start(pdev, 1);
1471ca9a MS	351	info->fix.mmio_len = pci_resource_len(pdev, 1);
6ee73861 BS	352
6ee73861 BS	353	/* Set aperture base/size for vesafb takeover */
06415c56	354	info->apertures = dev_priv->apertures;
1471ca9a MS	355	if (!info->apertures) {
	356	ret = -ENOMEM;
	357	goto out_unref;
	358	}
	359
6ee73861 BS	360	info->pixmap.size = 64*1024;
	361	info->pixmap.buf_align = 8;
	362	info->pixmap.access_align = 32;
	363	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	364	info->pixmap.scan_align = 1;
	365
6a6b73f2 BS	366	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	367
a32ed69d	368	if (dev_priv->channel && !nouveau_nofbaccel) {
ceed5f30 BS	369	ret = -ENODEV;
	370	if (dev_priv->card_type < NV_50)
	371	ret = nv04_fbcon_accel_init(info);
	372	else
	373	if (dev_priv->card_type < NV_C0)
	374	ret = nv50_fbcon_accel_init(info);
	375
	376	if (ret == 0)
	377	info->fbops = &nouveau_fbcon_ops;
0735f62e	378	}
6ee73861	379
8be48d92	380	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	381
	382	/* To allow resizeing without swapping buffers */
	383	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	384	nouveau_fb->base.width,
	385	nouveau_fb->base.height,
	386	nvbo->bo.offset, nvbo);
	387
6a9ee8af	388	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	389	return 0;
	390
	391	out_unref:
	392	mutex_unlock(&dev->struct_mutex);
	393	out:
	394	return ret;
	395	}
	396
38651674	397	static int
8be48d92 DA	398	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	399	struct drm_fb_helper_surface_size *sizes)
6ee73861	400	{
8be48d92	401	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	402	int new_fb = 0;
	403	int ret;
	404
8be48d92 DA	405	if (!helper->fb) {
8be48d92 DA	406	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	407	if (ret)
38651674 DA	408	return ret;
38651674	409	new_fb = 1;
38651674	410	}
38651674 DA	411	return new_fb;
38651674 DA	412	}
6ee73861	413
eb1f8e4f DA	414	void
eb1f8e4f DA	415	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	416	{
4abe3520	417	struct drm_nouveau_private *dev_priv = dev->dev_private;
eb1f8e4f	418	drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
6ee73861 BS	419	}
6ee73861 BS	420
6e86e041	421	static int
8be48d92	422	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	423	{
8be48d92	424	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	425	struct fb_info *info;
6ee73861 BS	426
8be48d92 DA	427	if (nfbdev->helper.fbdev) {
8be48d92 DA	428	info = nfbdev->helper.fbdev;
6ee73861	429	unregister_framebuffer(info);
4abe3520 DA	430	if (info->cmap.len)
4abe3520 DA	431	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	432	framebuffer_release(info);
8be48d92 DA	433	}
6ee73861	434
8be48d92	435	if (nouveau_fb->nvbo) {
6ee73861	436	nouveau_bo_unmap(nouveau_fb->nvbo);
bc9025bd	437	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	438	nouveau_fb->nvbo = NULL;
6ee73861	439	}
4abe3520	440	drm_fb_helper_fini(&nfbdev->helper);
38651674	441	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	442	return 0;
6ee73861 BS	443	}
846975a9 MS	444
	445	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	446	{
8be48d92 DA	447	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	448	struct drm_device *dev = nfbdev->dev;
846975a9 MS	449
	450	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	451	info->flags \|= FBINFO_HWACCEL_DISABLED;
	452	}
38651674	453
4abe3520 DA	454	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	455	.gamma_set = nouveau_fbcon_gamma_set,
	456	.gamma_get = nouveau_fbcon_gamma_get,
	457	.fb_probe = nouveau_fbcon_find_or_create_single,
4abe3520 DA	458	};
	459
	460
38651674 DA	461	int nouveau_fbcon_init(struct drm_device *dev)
38651674 DA	462	{
8be48d92 DA	463	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	464	struct nouveau_fbdev *nfbdev;
5a79395b	465	int ret;
8be48d92 DA	466
	467	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	468	if (!nfbdev)
	469	return -ENOMEM;
	470
	471	nfbdev->dev = dev;
	472	dev_priv->nfbdev = nfbdev;
4abe3520	473	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	474
77144554 FJ	475	ret = drm_fb_helper_init(dev, &nfbdev->helper,
77144554 FJ	476	nv_two_heads(dev) ? 2 : 1, 4);
5a79395b CW	477	if (ret) {
	478	kfree(nfbdev);
	479	return ret;
	480	}
	481
0b4c0f3f	482	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
4abe3520	483	drm_fb_helper_initial_config(&nfbdev->helper, 32);
38651674 DA	484	return 0;
	485	}
	486
	487	void nouveau_fbcon_fini(struct drm_device *dev)
	488	{
	489	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	490
	491	if (!dev_priv->nfbdev)
	492	return;
	493
38651674	494	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	495	kfree(dev_priv->nfbdev);
38651674 DA	496	dev_priv->nfbdev = NULL;
	497	}
	498
	499	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	500	{
	501	struct drm_nouveau_private *dev_priv = dev->dev_private;
	502
	503	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	504	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	505	}
	506
	507	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	508	{
	509	struct drm_nouveau_private *dev_priv = dev->dev_private;
	510	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	511	}
	512
	513	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	514	{
	515	struct drm_nouveau_private *dev_priv = dev->dev_private;
	516	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
	517	}
	518
	519	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	520	{
	521	struct drm_nouveau_private *dev_priv = dev->dev_private;
	522	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	523	}