[deliverable/linux.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 <linux/console.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_channel *chan;
	struct nouveau_bo *nvbo;
	struct drm_mode_fb_cmd2 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.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);

	size = mode_cmd.pitches[0] * mode_cmd.height;
	size = roundup(size, PAGE_SIZE);

	ret = nouveau_gem_new(dev, 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;
	}

	chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
	if (chan && dev_priv->card_type >= NV_50) {
		ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
		if (ret) {
			NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
			chan = NULL;
		}
	}

	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->pitches[0], 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);
		nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
		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 preferred_bpp;
	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);

	if (dev_priv->vram_size <= 32 * 1024 * 1024)
		preferred_bpp = 8;
	else if (dev_priv->vram_size <= 64 * 1024 * 1024)
		preferred_bpp = 16;
	else
		preferred_bpp = 32;

	drm_fb_helper_initial_config(&nfbdev->helper, preferred_bpp);
	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;
	console_lock();
	if (state == 0)
		nouveau_fbcon_save_disable_accel(dev);
	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
	if (state == 1)
		nouveau_fbcon_restore_accel(dev);
	console_unlock();
}

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>
cf41d53b	39	#include <linux/console.h>
6ee73861 BS	40
	41	#include "drmP.h"
	42	#include "drm.h"
	43	#include "drm_crtc.h"
	44	#include "drm_crtc_helper.h"
	45	#include "drm_fb_helper.h"
	46	#include "nouveau_drv.h"
	47	#include "nouveau_drm.h"
	48	#include "nouveau_crtc.h"
	49	#include "nouveau_fb.h"
	50	#include "nouveau_fbcon.h"
	51	#include "nouveau_dma.h"
	52
ceed5f30 BS	53	static void
	54	nouveau_fbcon_fillrect(struct fb_info info, const struct fb_fillrect rect)
	55	{
	56	struct nouveau_fbdev *nfbdev = info->par;
	57	struct drm_device *dev = nfbdev->dev;
	58	struct drm_nouveau_private *dev_priv = dev->dev_private;
	59	int ret;
	60
	61	if (info->state != FBINFO_STATE_RUNNING)
	62	return;
	63
	64	ret = -ENODEV;
9acc8100 BS	65	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	66	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	67	if (dev_priv->card_type < NV_50)
	68	ret = nv04_fbcon_fillrect(info, rect);
	69	else
	70	if (dev_priv->card_type < NV_C0)
	71	ret = nv50_fbcon_fillrect(info, rect);
ddbaf79a BS	72	else
ddbaf79a BS	73	ret = nvc0_fbcon_fillrect(info, rect);
6a6b73f2	74	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	75	}
	76
	77	if (ret == 0)
	78	return;
	79
	80	if (ret != -ENODEV)
	81	nouveau_fbcon_gpu_lockup(info);
	82	cfb_fillrect(info, rect);
	83	}
	84
	85	static void
	86	nouveau_fbcon_copyarea(struct fb_info info, const struct fb_copyarea image)
	87	{
	88	struct nouveau_fbdev *nfbdev = info->par;
	89	struct drm_device *dev = nfbdev->dev;
	90	struct drm_nouveau_private *dev_priv = dev->dev_private;
	91	int ret;
	92
	93	if (info->state != FBINFO_STATE_RUNNING)
	94	return;
	95
	96	ret = -ENODEV;
9acc8100 BS	97	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	98	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	99	if (dev_priv->card_type < NV_50)
	100	ret = nv04_fbcon_copyarea(info, image);
	101	else
	102	if (dev_priv->card_type < NV_C0)
	103	ret = nv50_fbcon_copyarea(info, image);
ddbaf79a BS	104	else
ddbaf79a BS	105	ret = nvc0_fbcon_copyarea(info, image);
6a6b73f2	106	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	107	}
	108
	109	if (ret == 0)
	110	return;
	111
	112	if (ret != -ENODEV)
	113	nouveau_fbcon_gpu_lockup(info);
	114	cfb_copyarea(info, image);
	115	}
	116
	117	static void
	118	nouveau_fbcon_imageblit(struct fb_info info, const struct fb_image image)
	119	{
	120	struct nouveau_fbdev *nfbdev = info->par;
	121	struct drm_device *dev = nfbdev->dev;
	122	struct drm_nouveau_private *dev_priv = dev->dev_private;
	123	int ret;
	124
	125	if (info->state != FBINFO_STATE_RUNNING)
	126	return;
	127
	128	ret = -ENODEV;
9acc8100 BS	129	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
9acc8100 BS	130	mutex_trylock(&dev_priv->channel->mutex)) {
ceed5f30 BS	131	if (dev_priv->card_type < NV_50)
	132	ret = nv04_fbcon_imageblit(info, image);
	133	else
	134	if (dev_priv->card_type < NV_C0)
	135	ret = nv50_fbcon_imageblit(info, image);
ddbaf79a BS	136	else
ddbaf79a BS	137	ret = nvc0_fbcon_imageblit(info, image);
6a6b73f2	138	mutex_unlock(&dev_priv->channel->mutex);
ceed5f30 BS	139	}
	140
	141	if (ret == 0)
	142	return;
	143
	144	if (ret != -ENODEV)
	145	nouveau_fbcon_gpu_lockup(info);
	146	cfb_imageblit(info, image);
	147	}
	148
6ee73861 BS	149	static int
	150	nouveau_fbcon_sync(struct fb_info *info)
	151	{
8be48d92 DA	152	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	153	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	154	struct drm_nouveau_private *dev_priv = dev->dev_private;
	155	struct nouveau_channel *chan = dev_priv->channel;
	156	int ret, i;
	157
6a6b73f2	158	if (!chan \|\| !chan->accel_done \|\| in_interrupt() \|\|
6ee73861 BS	159	info->state != FBINFO_STATE_RUNNING \|\|
	160	info->flags & FBINFO_HWACCEL_DISABLED)
	161	return 0;
	162
9acc8100 BS	163	if (!mutex_trylock(&chan->mutex))
	164	return 0;
	165
6a6b73f2 BS	166	ret = RING_SPACE(chan, 4);
	167	if (ret) {
	168	mutex_unlock(&chan->mutex);
846975a9	169	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	170	return 0;
	171	}
	172
ddbaf79a BS	173	if (dev_priv->card_type >= NV_C0) {
	174	BEGIN_NVC0(chan, 2, NvSub2D, 0x010c, 1);
	175	OUT_RING (chan, 0);
	176	BEGIN_NVC0(chan, 2, NvSub2D, 0x0100, 1);
	177	OUT_RING (chan, 0);
	178	} else {
	179	BEGIN_RING(chan, 0, 0x0104, 1);
	180	OUT_RING (chan, 0);
	181	BEGIN_RING(chan, 0, 0x0100, 1);
	182	OUT_RING (chan, 0);
	183	}
	184
a18d89ca	185	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
6ee73861	186	FIRE_RING(chan);
6a6b73f2	187	mutex_unlock(&chan->mutex);
6ee73861 BS	188
	189	ret = -EBUSY;
	190	for (i = 0; i < 100000; i++) {
a18d89ca	191	if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
6ee73861 BS	192	ret = 0;
	193	break;
	194	}
	195	DRM_UDELAY(1);
	196	}
	197
	198	if (ret) {
846975a9	199	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	200	return 0;
	201	}
	202
	203	chan->accel_done = false;
	204	return 0;
	205	}
	206
	207	static struct fb_ops nouveau_fbcon_ops = {
	208	.owner = THIS_MODULE,
	209	.fb_check_var = drm_fb_helper_check_var,
	210	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	211	.fb_fillrect = nouveau_fbcon_fillrect,
	212	.fb_copyarea = nouveau_fbcon_copyarea,
	213	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	214	.fb_sync = nouveau_fbcon_sync,
	215	.fb_pan_display = drm_fb_helper_pan_display,
	216	.fb_blank = drm_fb_helper_blank,
	217	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	218	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	219	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	220	};
6ee73861 BS	221
ceed5f30	222	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	223	.owner = THIS_MODULE,
	224	.fb_check_var = drm_fb_helper_check_var,
	225	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	226	.fb_fillrect = cfb_fillrect,
	227	.fb_copyarea = cfb_copyarea,
	228	.fb_imageblit = cfb_imageblit,
126b5440 MK	229	.fb_pan_display = drm_fb_helper_pan_display,
	230	.fb_blank = drm_fb_helper_blank,
	231	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	232	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	233	.fb_debug_leave = drm_fb_helper_debug_leave,
126b5440 MK	234	};
126b5440 MK	235
6ee73861 BS	236	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	237	u16 blue, int regno)
	238	{
	239	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	240
	241	nv_crtc->lut.r[regno] = red;
	242	nv_crtc->lut.g[regno] = green;
	243	nv_crtc->lut.b[regno] = blue;
	244	}
	245
	246	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	247	u16 *blue, int regno)
	248	{
	249	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	250
	251	*red = nv_crtc->lut.r[regno];
	252	*green = nv_crtc->lut.g[regno];
	253	*blue = nv_crtc->lut.b[regno];
	254	}
	255
38651674	256	static void
8be48d92	257	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	258	{
8be48d92	259	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	260	struct fb_fillrect rect;
	261
	262	/* Clear the entire fbcon. The drm will program every connector
	263	* with it's preferred mode. If the sizes differ, one display will
	264	* quite likely have garbage around the console.
	265	*/
	266	rect.dx = rect.dy = 0;
	267	rect.width = info->var.xres_virtual;
	268	rect.height = info->var.yres_virtual;
	269	rect.color = 0;
	270	rect.rop = ROP_COPY;
	271	info->fbops->fb_fillrect(info, &rect);
	272	}
	273
	274	static int
8be48d92 DA	275	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	276	struct drm_fb_helper_surface_size *sizes)
6ee73861	277	{
8be48d92	278	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	279	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	280	struct fb_info *info;
6ee73861 BS	281	struct drm_framebuffer *fb;
6ee73861 BS	282	struct nouveau_framebuffer *nouveau_fb;
45143cb5	283	struct nouveau_channel *chan;
6ee73861	284	struct nouveau_bo *nvbo;
308e5bcb	285	struct drm_mode_fb_cmd2 mode_cmd;
1471ca9a MS	286	struct pci_dev *pdev = dev->pdev;
1471ca9a MS	287	struct device *device = &pdev->dev;
6ee73861 BS	288	int size, ret;
6ee73861 BS	289
38651674 DA	290	mode_cmd.width = sizes->surface_width;
38651674 DA	291	mode_cmd.height = sizes->surface_height;
6ee73861	292
308e5bcb JB	293	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
308e5bcb JB	294	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
6ee73861	295
308e5bcb JB	296	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	297	sizes->surface_depth);
	298
	299	size = mode_cmd.pitches[0] * mode_cmd.height;
1c7059e4	300	size = roundup(size, PAGE_SIZE);
6ee73861	301
f6d4e621 BS	302	ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
f6d4e621 BS	303	0, 0x0000, &nvbo);
6ee73861 BS	304	if (ret) {
	305	NV_ERROR(dev, "failed to allocate framebuffer\n");
	306	goto out;
	307	}
	308
	309	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	310	if (ret) {
	311	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	312	nouveau_bo_ref(NULL, &nvbo);
	313	goto out;
	314	}
	315
	316	ret = nouveau_bo_map(nvbo);
	317	if (ret) {
	318	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	319	nouveau_bo_unpin(nvbo);
	320	nouveau_bo_ref(NULL, &nvbo);
	321	goto out;
	322	}
	323
45143cb5 BS	324	chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
	325	if (chan && dev_priv->card_type >= NV_50) {
	326	ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
	327	if (ret) {
	328	NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
	329	chan = NULL;
	330	}
	331	}
	332
6ee73861 BS	333	mutex_lock(&dev->struct_mutex);
6ee73861 BS	334
8be48d92	335	info = framebuffer_alloc(0, device);
6ee73861	336	if (!info) {
6ee73861	337	ret = -ENOMEM;
6ee73861 BS	338	goto out_unref;
	339	}
	340
4abe3520 DA	341	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	342	if (ret) {
6ee73861 BS	343	ret = -ENOMEM;
	344	goto out_unref;
	345	}
	346
8be48d92	347	info->par = nfbdev;
38651674	348
8be48d92	349	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	350
8be48d92 DA	351	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	352	fb = &nouveau_fb->base;
38651674	353
8be48d92 DA	354	/* setup helper */
	355	nfbdev->helper.fb = fb;
	356	nfbdev->helper.fbdev = info;
6ee73861 BS	357
6ee73861 BS	358	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	359	if (nouveau_nofbaccel)
	360	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	361	else
	362	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	363	FBINFO_HWACCEL_FILLRECT \|
	364	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	365	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	366	info->fbops = &nouveau_fbcon_sw_ops;
f01a9720 BS	367	info->fix.smem_start = nvbo->bo.mem.bus.base +
f01a9720 BS	368	nvbo->bo.mem.bus.offset;
6ee73861 BS	369	info->fix.smem_len = size;
	370
	371	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	372	info->screen_size = size;
	373
01f2c773	374	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
8be48d92	375	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861	376
6ee73861	377	/* Set aperture base/size for vesafb takeover */
06415c56	378	info->apertures = dev_priv->apertures;
1471ca9a MS	379	if (!info->apertures) {
	380	ret = -ENOMEM;
	381	goto out_unref;
	382	}
	383
6ee73861 BS	384	info->pixmap.size = 64*1024;
	385	info->pixmap.buf_align = 8;
	386	info->pixmap.access_align = 32;
	387	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	388	info->pixmap.scan_align = 1;
	389
6a6b73f2 BS	390	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	391
a32ed69d	392	if (dev_priv->channel && !nouveau_nofbaccel) {
ceed5f30 BS	393	ret = -ENODEV;
	394	if (dev_priv->card_type < NV_50)
	395	ret = nv04_fbcon_accel_init(info);
	396	else
	397	if (dev_priv->card_type < NV_C0)
	398	ret = nv50_fbcon_accel_init(info);
ddbaf79a BS	399	else
ddbaf79a BS	400	ret = nvc0_fbcon_accel_init(info);
ceed5f30 BS	401
	402	if (ret == 0)
	403	info->fbops = &nouveau_fbcon_ops;
0735f62e	404	}
6ee73861	405
8be48d92	406	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	407
	408	/* To allow resizeing without swapping buffers */
	409	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	410	nouveau_fb->base.width,
	411	nouveau_fb->base.height,
	412	nvbo->bo.offset, nvbo);
	413
6a9ee8af	414	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	415	return 0;
	416
	417	out_unref:
	418	mutex_unlock(&dev->struct_mutex);
	419	out:
	420	return ret;
	421	}
	422
38651674	423	static int
8be48d92 DA	424	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	425	struct drm_fb_helper_surface_size *sizes)
6ee73861	426	{
8be48d92	427	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	428	int new_fb = 0;
	429	int ret;
	430
8be48d92 DA	431	if (!helper->fb) {
8be48d92 DA	432	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	433	if (ret)
38651674 DA	434	return ret;
38651674	435	new_fb = 1;
38651674	436	}
38651674 DA	437	return new_fb;
38651674 DA	438	}
6ee73861	439
eb1f8e4f DA	440	void
eb1f8e4f DA	441	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	442	{
4abe3520	443	struct drm_nouveau_private *dev_priv = dev->dev_private;
eb1f8e4f	444	drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
6ee73861 BS	445	}
6ee73861 BS	446
6e86e041	447	static int
8be48d92	448	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	449	{
8be48d92	450	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	451	struct fb_info *info;
6ee73861 BS	452
8be48d92 DA	453	if (nfbdev->helper.fbdev) {
8be48d92 DA	454	info = nfbdev->helper.fbdev;
6ee73861	455	unregister_framebuffer(info);
4abe3520 DA	456	if (info->cmap.len)
4abe3520 DA	457	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	458	framebuffer_release(info);
8be48d92 DA	459	}
6ee73861	460
8be48d92	461	if (nouveau_fb->nvbo) {
6ee73861	462	nouveau_bo_unmap(nouveau_fb->nvbo);
45143cb5	463	nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
bc9025bd	464	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	465	nouveau_fb->nvbo = NULL;
6ee73861	466	}
4abe3520	467	drm_fb_helper_fini(&nfbdev->helper);
38651674	468	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	469	return 0;
6ee73861 BS	470	}
846975a9 MS	471
	472	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	473	{
8be48d92 DA	474	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	475	struct drm_device *dev = nfbdev->dev;
846975a9 MS	476
	477	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	478	info->flags \|= FBINFO_HWACCEL_DISABLED;
	479	}
38651674	480
4abe3520 DA	481	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	482	.gamma_set = nouveau_fbcon_gamma_set,
	483	.gamma_get = nouveau_fbcon_gamma_get,
	484	.fb_probe = nouveau_fbcon_find_or_create_single,
4abe3520 DA	485	};
	486
	487
38651674 DA	488	int nouveau_fbcon_init(struct drm_device *dev)
38651674 DA	489	{
8be48d92 DA	490	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	491	struct nouveau_fbdev *nfbdev;
1e482f75	492	int preferred_bpp;
5a79395b	493	int ret;
8be48d92 DA	494
	495	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	496	if (!nfbdev)
	497	return -ENOMEM;
	498
	499	nfbdev->dev = dev;
	500	dev_priv->nfbdev = nfbdev;
4abe3520	501	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	502
77144554 FJ	503	ret = drm_fb_helper_init(dev, &nfbdev->helper,
77144554 FJ	504	nv_two_heads(dev) ? 2 : 1, 4);
5a79395b CW	505	if (ret) {
	506	kfree(nfbdev);
	507	return ret;
	508	}
	509
0b4c0f3f	510	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
1e482f75 MS	511
	512	if (dev_priv->vram_size <= 32 * 1024 * 1024)
	513	preferred_bpp = 8;
	514	else if (dev_priv->vram_size <= 64 * 1024 * 1024)
	515	preferred_bpp = 16;
	516	else
	517	preferred_bpp = 32;
	518
	519	drm_fb_helper_initial_config(&nfbdev->helper, preferred_bpp);
38651674 DA	520	return 0;
	521	}
	522
	523	void nouveau_fbcon_fini(struct drm_device *dev)
	524	{
	525	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	526
	527	if (!dev_priv->nfbdev)
	528	return;
	529
38651674	530	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	531	kfree(dev_priv->nfbdev);
38651674 DA	532	dev_priv->nfbdev = NULL;
	533	}
	534
	535	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	536	{
	537	struct drm_nouveau_private *dev_priv = dev->dev_private;
	538
	539	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	540	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	541	}
	542
	543	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	544	{
	545	struct drm_nouveau_private *dev_priv = dev->dev_private;
	546	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	547	}
	548
	549	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	550	{
	551	struct drm_nouveau_private *dev_priv = dev->dev_private;
cf41d53b BS	552	console_lock();
	553	if (state == 0)
	554	nouveau_fbcon_save_disable_accel(dev);
38651674	555	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
cf41d53b BS	556	if (state == 1)
	557	nouveau_fbcon_restore_accel(dev);
	558	console_unlock();
38651674 DA	559	}
	560
	561	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	562	{
	563	struct drm_nouveau_private *dev_priv = dev->dev_private;
	564	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	565	}