[GitHub/mt8127/android_kernel_alcatel_ttab.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 <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include "nouveau_drv.h"
#include <drm/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;

	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 = nouveau_channel_idle(chan);
	mutex_unlock(&chan->mutex);
	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;
	}

	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */

	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,
				 dev->mode_config.num_crtc, 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	40
760285e7 DH	41	#include <drm/drmP.h>
	42	#include <drm/drm_crtc.h>
	43	#include <drm/drm_crtc_helper.h>
	44	#include <drm/drm_fb_helper.h>
6ee73861	45	#include "nouveau_drv.h"
760285e7	46	#include <drm/nouveau_drm.h>
6ee73861 BS	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;
6ee73861 BS	154	struct nouveau_channel *chan = dev_priv->channel;
78df3a1c	155	int ret;
6ee73861	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
78df3a1c	165	ret = nouveau_channel_idle(chan);
6a6b73f2	166	mutex_unlock(&chan->mutex);
6ee73861	167	if (ret) {
846975a9	168	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	169	return 0;
	170	}
	171
	172	chan->accel_done = false;
	173	return 0;
	174	}
	175
	176	static struct fb_ops nouveau_fbcon_ops = {
	177	.owner = THIS_MODULE,
	178	.fb_check_var = drm_fb_helper_check_var,
	179	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	180	.fb_fillrect = nouveau_fbcon_fillrect,
	181	.fb_copyarea = nouveau_fbcon_copyarea,
	182	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	183	.fb_sync = nouveau_fbcon_sync,
	184	.fb_pan_display = drm_fb_helper_pan_display,
	185	.fb_blank = drm_fb_helper_blank,
	186	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	187	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	188	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	189	};
6ee73861 BS	190
ceed5f30	191	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	192	.owner = THIS_MODULE,
	193	.fb_check_var = drm_fb_helper_check_var,
	194	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	195	.fb_fillrect = cfb_fillrect,
	196	.fb_copyarea = cfb_copyarea,
	197	.fb_imageblit = cfb_imageblit,
126b5440 MK	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,
126b5440 MK	203	};
126b5440 MK	204
6ee73861 BS	205	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	206	u16 blue, int regno)
	207	{
	208	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	209
	210	nv_crtc->lut.r[regno] = red;
	211	nv_crtc->lut.g[regno] = green;
	212	nv_crtc->lut.b[regno] = blue;
	213	}
	214
	215	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	216	u16 *blue, int regno)
	217	{
	218	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	219
	220	*red = nv_crtc->lut.r[regno];
	221	*green = nv_crtc->lut.g[regno];
	222	*blue = nv_crtc->lut.b[regno];
	223	}
	224
38651674	225	static void
8be48d92	226	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	227	{
8be48d92	228	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	229	struct fb_fillrect rect;
	230
	231	/* Clear the entire fbcon. The drm will program every connector
	232	* with it's preferred mode. If the sizes differ, one display will
	233	* quite likely have garbage around the console.
	234	*/
	235	rect.dx = rect.dy = 0;
	236	rect.width = info->var.xres_virtual;
	237	rect.height = info->var.yres_virtual;
	238	rect.color = 0;
	239	rect.rop = ROP_COPY;
	240	info->fbops->fb_fillrect(info, &rect);
	241	}
	242
	243	static int
8be48d92 DA	244	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	245	struct drm_fb_helper_surface_size *sizes)
6ee73861	246	{
8be48d92	247	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	248	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	249	struct fb_info *info;
6ee73861 BS	250	struct drm_framebuffer *fb;
6ee73861 BS	251	struct nouveau_framebuffer *nouveau_fb;
45143cb5	252	struct nouveau_channel *chan;
6ee73861	253	struct nouveau_bo *nvbo;
308e5bcb	254	struct drm_mode_fb_cmd2 mode_cmd;
1471ca9a MS	255	struct pci_dev *pdev = dev->pdev;
1471ca9a MS	256	struct device *device = &pdev->dev;
6ee73861 BS	257	int size, ret;
6ee73861 BS	258
38651674 DA	259	mode_cmd.width = sizes->surface_width;
38651674 DA	260	mode_cmd.height = sizes->surface_height;
6ee73861	261
308e5bcb JB	262	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
308e5bcb JB	263	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
6ee73861	264
308e5bcb JB	265	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	266	sizes->surface_depth);
	267
	268	size = mode_cmd.pitches[0] * mode_cmd.height;
1c7059e4	269	size = roundup(size, PAGE_SIZE);
6ee73861	270
f6d4e621 BS	271	ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
f6d4e621 BS	272	0, 0x0000, &nvbo);
6ee73861 BS	273	if (ret) {
	274	NV_ERROR(dev, "failed to allocate framebuffer\n");
	275	goto out;
	276	}
	277
	278	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	279	if (ret) {
	280	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	281	nouveau_bo_ref(NULL, &nvbo);
	282	goto out;
	283	}
	284
	285	ret = nouveau_bo_map(nvbo);
	286	if (ret) {
	287	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	288	nouveau_bo_unpin(nvbo);
	289	nouveau_bo_ref(NULL, &nvbo);
	290	goto out;
	291	}
	292
45143cb5 BS	293	chan = nouveau_nofbaccel ? NULL : dev_priv->channel;
	294	if (chan && dev_priv->card_type >= NV_50) {
	295	ret = nouveau_bo_vma_add(nvbo, chan->vm, &nfbdev->nouveau_fb.vma);
	296	if (ret) {
	297	NV_ERROR(dev, "failed to map fb into chan: %d\n", ret);
	298	chan = NULL;
	299	}
	300	}
	301
6ee73861 BS	302	mutex_lock(&dev->struct_mutex);
6ee73861 BS	303
8be48d92	304	info = framebuffer_alloc(0, device);
6ee73861	305	if (!info) {
6ee73861	306	ret = -ENOMEM;
6ee73861 BS	307	goto out_unref;
	308	}
	309
4abe3520 DA	310	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	311	if (ret) {
6ee73861 BS	312	ret = -ENOMEM;
	313	goto out_unref;
	314	}
	315
8be48d92	316	info->par = nfbdev;
38651674	317
8be48d92	318	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	319
8be48d92 DA	320	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	321	fb = &nouveau_fb->base;
38651674	322
8be48d92 DA	323	/* setup helper */
	324	nfbdev->helper.fb = fb;
	325	nfbdev->helper.fbdev = info;
6ee73861 BS	326
6ee73861 BS	327	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	328	if (nouveau_nofbaccel)
	329	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	330	else
	331	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	332	FBINFO_HWACCEL_FILLRECT \|
	333	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	334	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	335	info->fbops = &nouveau_fbcon_sw_ops;
f01a9720 BS	336	info->fix.smem_start = nvbo->bo.mem.bus.base +
f01a9720 BS	337	nvbo->bo.mem.bus.offset;
6ee73861 BS	338	info->fix.smem_len = size;
	339
	340	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	341	info->screen_size = size;
	342
01f2c773	343	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
8be48d92	344	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861	345
6ee73861	346	/* Set aperture base/size for vesafb takeover */
06415c56	347	info->apertures = dev_priv->apertures;
1471ca9a MS	348	if (!info->apertures) {
	349	ret = -ENOMEM;
	350	goto out_unref;
	351	}
	352
fb2a99e1	353	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
6ee73861	354
6a6b73f2 BS	355	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	356
a32ed69d	357	if (dev_priv->channel && !nouveau_nofbaccel) {
ceed5f30 BS	358	ret = -ENODEV;
	359	if (dev_priv->card_type < NV_50)
	360	ret = nv04_fbcon_accel_init(info);
	361	else
	362	if (dev_priv->card_type < NV_C0)
	363	ret = nv50_fbcon_accel_init(info);
ddbaf79a BS	364	else
ddbaf79a BS	365	ret = nvc0_fbcon_accel_init(info);
ceed5f30 BS	366
	367	if (ret == 0)
	368	info->fbops = &nouveau_fbcon_ops;
0735f62e	369	}
6ee73861	370
8be48d92	371	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	372
	373	/* To allow resizeing without swapping buffers */
	374	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	375	nouveau_fb->base.width,
	376	nouveau_fb->base.height,
	377	nvbo->bo.offset, nvbo);
	378
6a9ee8af	379	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	380	return 0;
	381
	382	out_unref:
	383	mutex_unlock(&dev->struct_mutex);
	384	out:
	385	return ret;
	386	}
	387
38651674	388	static int
8be48d92 DA	389	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	390	struct drm_fb_helper_surface_size *sizes)
6ee73861	391	{
8be48d92	392	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	393	int new_fb = 0;
	394	int ret;
	395
8be48d92 DA	396	if (!helper->fb) {
8be48d92 DA	397	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	398	if (ret)
38651674 DA	399	return ret;
38651674	400	new_fb = 1;
38651674	401	}
38651674 DA	402	return new_fb;
38651674 DA	403	}
6ee73861	404
eb1f8e4f DA	405	void
eb1f8e4f DA	406	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	407	{
4abe3520	408	struct drm_nouveau_private *dev_priv = dev->dev_private;
eb1f8e4f	409	drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
6ee73861 BS	410	}
6ee73861 BS	411
6e86e041	412	static int
8be48d92	413	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	414	{
8be48d92	415	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	416	struct fb_info *info;
6ee73861 BS	417
8be48d92 DA	418	if (nfbdev->helper.fbdev) {
8be48d92 DA	419	info = nfbdev->helper.fbdev;
6ee73861	420	unregister_framebuffer(info);
4abe3520 DA	421	if (info->cmap.len)
4abe3520 DA	422	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	423	framebuffer_release(info);
8be48d92 DA	424	}
6ee73861	425
8be48d92	426	if (nouveau_fb->nvbo) {
6ee73861	427	nouveau_bo_unmap(nouveau_fb->nvbo);
45143cb5	428	nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
bc9025bd	429	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	430	nouveau_fb->nvbo = NULL;
6ee73861	431	}
4abe3520	432	drm_fb_helper_fini(&nfbdev->helper);
38651674	433	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	434	return 0;
6ee73861 BS	435	}
846975a9 MS	436
	437	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	438	{
8be48d92 DA	439	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	440	struct drm_device *dev = nfbdev->dev;
846975a9 MS	441
	442	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	443	info->flags \|= FBINFO_HWACCEL_DISABLED;
	444	}
38651674	445
4abe3520 DA	446	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	447	.gamma_set = nouveau_fbcon_gamma_set,
	448	.gamma_get = nouveau_fbcon_gamma_get,
	449	.fb_probe = nouveau_fbcon_find_or_create_single,
4abe3520 DA	450	};
	451
	452
38651674 DA	453	int nouveau_fbcon_init(struct drm_device *dev)
38651674 DA	454	{
8be48d92 DA	455	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	456	struct nouveau_fbdev *nfbdev;
1e482f75	457	int preferred_bpp;
5a79395b	458	int ret;
8be48d92 DA	459
	460	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	461	if (!nfbdev)
	462	return -ENOMEM;
	463
	464	nfbdev->dev = dev;
	465	dev_priv->nfbdev = nfbdev;
4abe3520	466	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	467
77144554	468	ret = drm_fb_helper_init(dev, &nfbdev->helper,
9bd0c15f	469	dev->mode_config.num_crtc, 4);
5a79395b CW	470	if (ret) {
	471	kfree(nfbdev);
	472	return ret;
	473	}
	474
0b4c0f3f	475	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
1e482f75 MS	476
	477	if (dev_priv->vram_size <= 32 * 1024 * 1024)
	478	preferred_bpp = 8;
	479	else if (dev_priv->vram_size <= 64 * 1024 * 1024)
	480	preferred_bpp = 16;
	481	else
	482	preferred_bpp = 32;
	483
	484	drm_fb_helper_initial_config(&nfbdev->helper, preferred_bpp);
38651674 DA	485	return 0;
	486	}
	487
	488	void nouveau_fbcon_fini(struct drm_device *dev)
	489	{
	490	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	491
	492	if (!dev_priv->nfbdev)
	493	return;
	494
38651674	495	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	496	kfree(dev_priv->nfbdev);
38651674 DA	497	dev_priv->nfbdev = NULL;
	498	}
	499
	500	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	501	{
	502	struct drm_nouveau_private *dev_priv = dev->dev_private;
	503
	504	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	505	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	506	}
	507
	508	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	509	{
	510	struct drm_nouveau_private *dev_priv = dev->dev_private;
	511	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	512	}
	513
	514	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	515	{
	516	struct drm_nouveau_private *dev_priv = dev->dev_private;
cf41d53b BS	517	console_lock();
	518	if (state == 0)
	519	nouveau_fbcon_save_disable_accel(dev);
38651674	520	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
cf41d53b BS	521	if (state == 1)
	522	nouveau_fbcon_restore_accel(dev);
	523	console_unlock();
38651674 DA	524	}
	525
	526	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	527	{
	528	struct drm_nouveau_private *dev_priv = dev->dev_private;
	529	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	530	}