[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 "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 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 ||
	    info->state != FBINFO_STATE_RUNNING ||
	    info->flags & FBINFO_HWACCEL_DISABLED)
		return 0;

	if (RING_SPACE(chan, 4)) {
		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);

	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 = cfb_fillrect,
	.fb_copyarea = cfb_copyarea,
	.fb_imageblit = cfb_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,
};

static struct fb_ops nv04_fbcon_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_fillrect = nv04_fbcon_fillrect,
	.fb_copyarea = nv04_fbcon_copyarea,
	.fb_imageblit = nv04_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,
};

static struct fb_ops nv50_fbcon_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_fillrect = nv50_fbcon_fillrect,
	.fb_copyarea = nv50_fbcon_copyarea,
	.fb_imageblit = nv50_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,
};

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];
}

#if defined(__i386__) || defined(__x86_64__)
static bool
nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
{
	struct pci_dev *pdev = dev->pdev;
	int ramin;

	if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
	    screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
		return false;

	if (screen_info.lfb_base < pci_resource_start(pdev, 1))
		goto not_fb;

	if (screen_info.lfb_base + screen_info.lfb_size >=
	    pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
		goto not_fb;

	return true;
not_fb:
	ramin = 2;
	if (pci_resource_len(pdev, ramin) == 0) {
		ramin = 3;
		if (pci_resource_len(pdev, ramin) == 0)
			return false;
	}

	if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
		return false;

	if (screen_info.lfb_base + screen_info.lfb_size >=
	    pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
		return false;

	return true;
}
#endif

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 device *device = &dev->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->fbops = &nouveau_fbcon_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(dev->pdev, 1);
	info->fix.mmio_len = pci_resource_len(dev->pdev, 1);

	/* Set aperture base/size for vesafb takeover */
#if defined(__i386__) || defined(__x86_64__)
	if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
		/* Some NVIDIA VBIOS' are stupid and decide to put the
		 * framebuffer in the middle of the PRAMIN BAR for
		 * whatever reason.  We need to know the exact lfb_base
		 * to get vesafb kicked off, and the only reliable way
		 * we have left is to find out lfb_base the same way
		 * vesafb did.
		 */
		info->aperture_base = screen_info.lfb_base;
		info->aperture_size = screen_info.lfb_size;
		if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
			info->aperture_size *= 65536;
	} else
#endif
	{
		info->aperture_base = info->fix.mmio_start;
		info->aperture_size = info->fix.mmio_len;
	}

	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;

	if (dev_priv->channel && !nouveau_nofbaccel) {
		switch (dev_priv->card_type) {
		case NV_50:
			nv50_fbcon_accel_init(info);
			info->fbops = &nv50_fbcon_ops;
			break;
		default:
			nv04_fbcon_accel_init(info);
			info->fbops = &nv04_fbcon_ops;
			break;
		};
	}

	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);

	mutex_unlock(&dev->struct_mutex);
	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_hotplug(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	drm_helper_fb_hpd_irq_event(&dev_priv->nfbdev->helper);
}

static void nouveau_fbcon_output_status_changed(struct drm_fb_helper *fb_helper)
{
	drm_helper_fb_hotplug_event(fb_helper, true);
}

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,
	.fb_output_status_changed = nouveau_fbcon_output_status_changed,
};


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

	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;

	drm_fb_helper_init(dev, &nfbdev->helper,
			   2, 4, true);
	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
	52	static int
	53	nouveau_fbcon_sync(struct fb_info *info)
	54	{
8be48d92 DA	55	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	56	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	57	struct drm_nouveau_private *dev_priv = dev->dev_private;
	58	struct nouveau_channel *chan = dev_priv->channel;
	59	int ret, i;
	60
0735f62e	61	if (!chan \|\| !chan->accel_done \|\|
6ee73861 BS	62	info->state != FBINFO_STATE_RUNNING \|\|
	63	info->flags & FBINFO_HWACCEL_DISABLED)
	64	return 0;
	65
	66	if (RING_SPACE(chan, 4)) {
846975a9	67	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	68	return 0;
	69	}
	70
	71	BEGIN_RING(chan, 0, 0x0104, 1);
	72	OUT_RING(chan, 0);
	73	BEGIN_RING(chan, 0, 0x0100, 1);
	74	OUT_RING(chan, 0);
	75	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
	76	FIRE_RING(chan);
	77
	78	ret = -EBUSY;
	79	for (i = 0; i < 100000; i++) {
	80	if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
	81	ret = 0;
	82	break;
	83	}
	84	DRM_UDELAY(1);
	85	}
	86
	87	if (ret) {
846975a9	88	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	89	return 0;
	90	}
	91
	92	chan->accel_done = false;
	93	return 0;
	94	}
	95
	96	static struct fb_ops nouveau_fbcon_ops = {
	97	.owner = THIS_MODULE,
	98	.fb_check_var = drm_fb_helper_check_var,
	99	.fb_set_par = drm_fb_helper_set_par,
6ee73861 BS	100	.fb_fillrect = cfb_fillrect,
	101	.fb_copyarea = cfb_copyarea,
	102	.fb_imageblit = cfb_imageblit,
	103	.fb_sync = nouveau_fbcon_sync,
	104	.fb_pan_display = drm_fb_helper_pan_display,
	105	.fb_blank = drm_fb_helper_blank,
	106	.fb_setcmap = drm_fb_helper_setcmap,
	107	};
	108
126b5440 MK	109	static struct fb_ops nv04_fbcon_ops = {
	110	.owner = THIS_MODULE,
	111	.fb_check_var = drm_fb_helper_check_var,
	112	.fb_set_par = drm_fb_helper_set_par,
126b5440 MK	113	.fb_fillrect = nv04_fbcon_fillrect,
	114	.fb_copyarea = nv04_fbcon_copyarea,
	115	.fb_imageblit = nv04_fbcon_imageblit,
	116	.fb_sync = nouveau_fbcon_sync,
	117	.fb_pan_display = drm_fb_helper_pan_display,
	118	.fb_blank = drm_fb_helper_blank,
	119	.fb_setcmap = drm_fb_helper_setcmap,
	120	};
	121
	122	static struct fb_ops nv50_fbcon_ops = {
	123	.owner = THIS_MODULE,
	124	.fb_check_var = drm_fb_helper_check_var,
	125	.fb_set_par = drm_fb_helper_set_par,
126b5440 MK	126	.fb_fillrect = nv50_fbcon_fillrect,
	127	.fb_copyarea = nv50_fbcon_copyarea,
	128	.fb_imageblit = nv50_fbcon_imageblit,
	129	.fb_sync = nouveau_fbcon_sync,
	130	.fb_pan_display = drm_fb_helper_pan_display,
	131	.fb_blank = drm_fb_helper_blank,
	132	.fb_setcmap = drm_fb_helper_setcmap,
	133	};
	134
6ee73861 BS	135	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	136	u16 blue, int regno)
	137	{
	138	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	139
	140	nv_crtc->lut.r[regno] = red;
	141	nv_crtc->lut.g[regno] = green;
	142	nv_crtc->lut.b[regno] = blue;
	143	}
	144
	145	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	146	u16 *blue, int regno)
	147	{
	148	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	149
	150	*red = nv_crtc->lut.r[regno];
	151	*green = nv_crtc->lut.g[regno];
	152	*blue = nv_crtc->lut.b[regno];
	153	}
	154
6ee73861 BS	155	#if defined(__i386__) \|\| defined(__x86_64__)
	156	static bool
	157	nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
	158	{
	159	struct pci_dev *pdev = dev->pdev;
	160	int ramin;
	161
	162	if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
	163	screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
	164	return false;
	165
	166	if (screen_info.lfb_base < pci_resource_start(pdev, 1))
	167	goto not_fb;
	168
	169	if (screen_info.lfb_base + screen_info.lfb_size >=
	170	pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
	171	goto not_fb;
	172
	173	return true;
	174	not_fb:
	175	ramin = 2;
	176	if (pci_resource_len(pdev, ramin) == 0) {
	177	ramin = 3;
	178	if (pci_resource_len(pdev, ramin) == 0)
	179	return false;
	180	}
	181
	182	if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
	183	return false;
	184
	185	if (screen_info.lfb_base + screen_info.lfb_size >=
	186	pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
	187	return false;
	188
	189	return true;
	190	}
	191	#endif
	192
38651674	193	static void
8be48d92	194	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	195	{
8be48d92	196	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	197	struct fb_fillrect rect;
	198
	199	/* Clear the entire fbcon. The drm will program every connector
	200	* with it's preferred mode. If the sizes differ, one display will
	201	* quite likely have garbage around the console.
	202	*/
	203	rect.dx = rect.dy = 0;
	204	rect.width = info->var.xres_virtual;
	205	rect.height = info->var.yres_virtual;
	206	rect.color = 0;
	207	rect.rop = ROP_COPY;
	208	info->fbops->fb_fillrect(info, &rect);
	209	}
	210
	211	static int
8be48d92 DA	212	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	213	struct drm_fb_helper_surface_size *sizes)
6ee73861	214	{
8be48d92	215	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	216	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	217	struct fb_info *info;
6ee73861 BS	218	struct drm_framebuffer *fb;
	219	struct nouveau_framebuffer *nouveau_fb;
	220	struct nouveau_bo *nvbo;
	221	struct drm_mode_fb_cmd mode_cmd;
	222	struct device *device = &dev->pdev->dev;
	223	int size, ret;
	224
38651674 DA	225	mode_cmd.width = sizes->surface_width;
38651674 DA	226	mode_cmd.height = sizes->surface_height;
6ee73861	227
38651674	228	mode_cmd.bpp = sizes->surface_bpp;
6ee73861	229	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
1c7059e4	230	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
38651674	231	mode_cmd.depth = sizes->surface_depth;
6ee73861 BS	232
6ee73861 BS	233	size = mode_cmd.pitch * mode_cmd.height;
1c7059e4	234	size = roundup(size, PAGE_SIZE);
6ee73861 BS	235
	236	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
	237	0, 0x0000, false, true, &nvbo);
	238	if (ret) {
	239	NV_ERROR(dev, "failed to allocate framebuffer\n");
	240	goto out;
	241	}
	242
	243	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	244	if (ret) {
	245	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	246	nouveau_bo_ref(NULL, &nvbo);
	247	goto out;
	248	}
	249
	250	ret = nouveau_bo_map(nvbo);
	251	if (ret) {
	252	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	253	nouveau_bo_unpin(nvbo);
	254	nouveau_bo_ref(NULL, &nvbo);
	255	goto out;
	256	}
	257
	258	mutex_lock(&dev->struct_mutex);
	259
8be48d92	260	info = framebuffer_alloc(0, device);
6ee73861	261	if (!info) {
6ee73861	262	ret = -ENOMEM;
6ee73861 BS	263	goto out_unref;
	264	}
	265
4abe3520 DA	266	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	267	if (ret) {
6ee73861 BS	268	ret = -ENOMEM;
	269	goto out_unref;
	270	}
	271
8be48d92	272	info->par = nfbdev;
38651674	273
8be48d92	274	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	275
8be48d92 DA	276	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	277	fb = &nouveau_fb->base;
38651674	278
8be48d92 DA	279	/* setup helper */
	280	nfbdev->helper.fb = fb;
	281	nfbdev->helper.fbdev = info;
6ee73861 BS	282
6ee73861 BS	283	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	284	if (nouveau_nofbaccel)
	285	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	286	else
	287	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	288	FBINFO_HWACCEL_FILLRECT \|
	289	FBINFO_HWACCEL_IMAGEBLIT;
6ee73861 BS	290	info->fbops = &nouveau_fbcon_ops;
	291	info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
	292	dev_priv->vm_vram_base;
	293	info->fix.smem_len = size;
	294
	295	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	296	info->screen_size = size;
	297
	298	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
8be48d92	299	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861 BS	300
	301	/* FIXME: we really shouldn't expose mmio space at all */
	302	info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
	303	info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
	304
	305	/* Set aperture base/size for vesafb takeover */
	306	#if defined(__i386__) \|\| defined(__x86_64__)
	307	if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
	308	/* Some NVIDIA VBIOS' are stupid and decide to put the
	309	* framebuffer in the middle of the PRAMIN BAR for
	310	* whatever reason. We need to know the exact lfb_base
	311	* to get vesafb kicked off, and the only reliable way
	312	* we have left is to find out lfb_base the same way
	313	* vesafb did.
	314	*/
	315	info->aperture_base = screen_info.lfb_base;
	316	info->aperture_size = screen_info.lfb_size;
	317	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
	318	info->aperture_size *= 65536;
	319	} else
	320	#endif
	321	{
	322	info->aperture_base = info->fix.mmio_start;
	323	info->aperture_size = info->fix.mmio_len;
	324	}
	325
	326	info->pixmap.size = 64*1024;
	327	info->pixmap.buf_align = 8;
	328	info->pixmap.access_align = 32;
	329	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	330	info->pixmap.scan_align = 1;
	331
a32ed69d	332	if (dev_priv->channel && !nouveau_nofbaccel) {
0735f62e BS	333	switch (dev_priv->card_type) {
	334	case NV_50:
	335	nv50_fbcon_accel_init(info);
126b5440	336	info->fbops = &nv50_fbcon_ops;
0735f62e BS	337	break;
	338	default:
	339	nv04_fbcon_accel_init(info);
126b5440	340	info->fbops = &nv04_fbcon_ops;
0735f62e BS	341	break;
	342	};
	343	}
6ee73861	344
8be48d92	345	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	346
	347	/* To allow resizeing without swapping buffers */
	348	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	349	nouveau_fb->base.width,
	350	nouveau_fb->base.height,
	351	nvbo->bo.offset, nvbo);
	352
	353	mutex_unlock(&dev->struct_mutex);
6a9ee8af	354	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	355	return 0;
	356
	357	out_unref:
	358	mutex_unlock(&dev->struct_mutex);
	359	out:
	360	return ret;
	361	}
	362
38651674	363	static int
8be48d92 DA	364	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	365	struct drm_fb_helper_surface_size *sizes)
6ee73861	366	{
8be48d92	367	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	368	int new_fb = 0;
	369	int ret;
	370
8be48d92 DA	371	if (!helper->fb) {
8be48d92 DA	372	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	373	if (ret)
38651674 DA	374	return ret;
38651674	375	new_fb = 1;
38651674	376	}
38651674 DA	377	return new_fb;
38651674 DA	378	}
6ee73861	379
4abe3520	380	void nouveau_fbcon_hotplug(struct drm_device *dev)
6ee73861	381	{
4abe3520 DA	382	struct drm_nouveau_private *dev_priv = dev->dev_private;
	383	drm_helper_fb_hpd_irq_event(&dev_priv->nfbdev->helper);
	384	}
6ee73861	385
4abe3520 DA	386	static void nouveau_fbcon_output_status_changed(struct drm_fb_helper *fb_helper)
	387	{
	388	drm_helper_fb_hotplug_event(fb_helper, true);
6ee73861 BS	389	}
	390
	391	int
8be48d92	392	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	393	{
8be48d92	394	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	395	struct fb_info *info;
6ee73861 BS	396
8be48d92 DA	397	if (nfbdev->helper.fbdev) {
8be48d92 DA	398	info = nfbdev->helper.fbdev;
6ee73861	399	unregister_framebuffer(info);
4abe3520 DA	400	if (info->cmap.len)
4abe3520 DA	401	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	402	framebuffer_release(info);
8be48d92 DA	403	}
6ee73861	404
8be48d92	405	if (nouveau_fb->nvbo) {
6ee73861	406	nouveau_bo_unmap(nouveau_fb->nvbo);
bc9025bd	407	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	408	nouveau_fb->nvbo = NULL;
6ee73861	409	}
4abe3520	410	drm_fb_helper_fini(&nfbdev->helper);
38651674	411	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	412	return 0;
6ee73861 BS	413	}
846975a9 MS	414
	415	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	416	{
8be48d92 DA	417	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	418	struct drm_device *dev = nfbdev->dev;
846975a9 MS	419
	420	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	421	info->flags \|= FBINFO_HWACCEL_DISABLED;
	422	}
38651674	423
4abe3520 DA	424	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	425	.gamma_set = nouveau_fbcon_gamma_set,
	426	.gamma_get = nouveau_fbcon_gamma_get,
	427	.fb_probe = nouveau_fbcon_find_or_create_single,
	428	.fb_output_status_changed = nouveau_fbcon_output_status_changed,
	429	};
	430
	431
38651674 DA	432	int nouveau_fbcon_init(struct drm_device *dev)
38651674 DA	433	{
8be48d92 DA	434	struct drm_nouveau_private *dev_priv = dev->dev_private;
	435	struct nouveau_fbdev *nfbdev;
	436
	437	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	438	if (!nfbdev)
	439	return -ENOMEM;
	440
	441	nfbdev->dev = dev;
	442	dev_priv->nfbdev = nfbdev;
4abe3520	443	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	444
4abe3520 DA	445	drm_fb_helper_init(dev, &nfbdev->helper,
4abe3520 DA	446	2, 4, true);
0b4c0f3f	447	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
4abe3520	448	drm_fb_helper_initial_config(&nfbdev->helper, 32);
38651674 DA	449	return 0;
	450	}
	451
	452	void nouveau_fbcon_fini(struct drm_device *dev)
	453	{
	454	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	455
	456	if (!dev_priv->nfbdev)
	457	return;
	458
38651674	459	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	460	kfree(dev_priv->nfbdev);
38651674 DA	461	dev_priv->nfbdev = NULL;
	462	}
	463
	464	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	465	{
	466	struct drm_nouveau_private *dev_priv = dev->dev_private;
	467
	468	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	469	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	470	}
	471
	472	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	473	{
	474	struct drm_nouveau_private *dev_priv = dev->dev_private;
	475	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	476	}
	477
	478	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	479	{
	480	struct drm_nouveau_private *dev_priv = dev->dev_private;
	481	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
	482	}
	483
	484	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	485	{
	486	struct drm_nouveau_private *dev_priv = dev->dev_private;
	487	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	488	}