[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / nouveau / nouveau_fbcon.c

/*
 * Copyright © 2007 David Airlie
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *     David Airlie
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/sysrq.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/screen_info.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_fbcon_par *par = info->par;
	struct drm_device *dev = par->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_setcolreg = drm_fb_helper_setcolreg,
	.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 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 struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	.gamma_set = nouveau_fbcon_gamma_set,
	.gamma_get = nouveau_fbcon_gamma_get
};

#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

void
nouveau_fbcon_zfill(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct fb_info *info = dev_priv->fbdev_info;
	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 drm_device *dev, uint32_t fb_width,
		     uint32_t fb_height, uint32_t surface_width,
		     uint32_t surface_height, uint32_t surface_depth,
		     uint32_t surface_bpp, struct drm_framebuffer **pfb)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct fb_info *info;
	struct nouveau_fbcon_par *par;
	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 = surface_width;
	mode_cmd.height = surface_height;

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

	fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd);
	if (!fb) {
		ret = -ENOMEM;
		NV_ERROR(dev, "failed to allocate fb.\n");
		goto out_unref;
	}

	list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);

	nouveau_fb = nouveau_framebuffer(fb);
	*pfb = fb;

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

	par = info->par;
	par->helper.funcs = &nouveau_fbcon_helper_funcs;
	par->helper.dev = dev;
	ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4);
	if (ret)
		goto out_unref;
	dev_priv->fbdev_info = 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, fb, fb_width, 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;

	fb->fbdev = info;

	par->nouveau_fb = nouveau_fb;
	par->dev = dev;

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

	nouveau_fbcon_zfill(dev);

	/* 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);
	return 0;

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

int
nouveau_fbcon_probe(struct drm_device *dev)
{
	NV_DEBUG_KMS(dev, "\n");

	return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create);
}

int
nouveau_fbcon_remove(struct drm_device *dev, struct drm_framebuffer *fb)
{
	struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb);
	struct fb_info *info;

	if (!fb)
		return -EINVAL;

	info = fb->fbdev;
	if (info) {
		struct nouveau_fbcon_par *par = info->par;

		unregister_framebuffer(info);
		nouveau_bo_unmap(nouveau_fb->nvbo);
		mutex_lock(&dev->struct_mutex);
		drm_gem_object_unreference(nouveau_fb->nvbo->gem);
		nouveau_fb->nvbo = NULL;
		mutex_unlock(&dev->struct_mutex);
		if (par)
			drm_fb_helper_free(&par->helper);
		framebuffer_release(info);
	}

	return 0;
}

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

	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	info->flags |= FBINFO_HWACCEL_DISABLED;
}
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>
	33	#include <linux/slab.h>
	34	#include <linux/sysrq.h>
	35	#include <linux/delay.h>
	36	#include <linux/fb.h>
	37	#include <linux/init.h>
	38	#include <linux/screen_info.h>
	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	{
	55	struct nouveau_fbcon_par *par = info->par;
	56	struct drm_device *dev = par->dev;
	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,
	100	.fb_setcolreg = drm_fb_helper_setcolreg,
	101	.fb_fillrect = cfb_fillrect,
	102	.fb_copyarea = cfb_copyarea,
	103	.fb_imageblit = cfb_imageblit,
	104	.fb_sync = nouveau_fbcon_sync,
	105	.fb_pan_display = drm_fb_helper_pan_display,
	106	.fb_blank = drm_fb_helper_blank,
	107	.fb_setcmap = drm_fb_helper_setcmap,
	108	};
	109
	110	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	111	u16 blue, int regno)
	112	{
	113	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	114
	115	nv_crtc->lut.r[regno] = red;
	116	nv_crtc->lut.g[regno] = green;
	117	nv_crtc->lut.b[regno] = blue;
	118	}
	119
	120	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	121	u16 *blue, int regno)
	122	{
	123	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	124
	125	*red = nv_crtc->lut.r[regno];
	126	*green = nv_crtc->lut.g[regno];
	127	*blue = nv_crtc->lut.b[regno];
	128	}
	129
	130	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	131	.gamma_set = nouveau_fbcon_gamma_set,
	132	.gamma_get = nouveau_fbcon_gamma_get
	133	};
	134
	135	#if defined(__i386__) \|\| defined(__x86_64__)
	136	static bool
	137	nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
	138	{
	139	struct pci_dev *pdev = dev->pdev;
	140	int ramin;
	141
	142	if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
	143	screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
	144	return false;
	145
	146	if (screen_info.lfb_base < pci_resource_start(pdev, 1))
	147	goto not_fb;
	148
	149	if (screen_info.lfb_base + screen_info.lfb_size >=
	150	pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
	151	goto not_fb;
	152
153	return true;
154	not_fb:
155	ramin = 2;
156	if (pci_resource_len(pdev, ramin) == 0) {
157	ramin = 3;
158	if (pci_resource_len(pdev, ramin) == 0)
159	return false;
160	}
161
162	if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
163	return false;
164
165	if (screen_info.lfb_base + screen_info.lfb_size >=
166	pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
167	return false;
168
169	return true;
170	}
171	#endif
172
173	void
174	nouveau_fbcon_zfill(struct drm_device *dev)
175	{
176	struct drm_nouveau_private *dev_priv = dev->dev_private;
177	struct fb_info *info = dev_priv->fbdev_info;
178	struct fb_fillrect rect;
179
180	/* Clear the entire fbcon. The drm will program every connector
181	* with it's preferred mode. If the sizes differ, one display will
182	* quite likely have garbage around the console.
183	*/
184	rect.dx = rect.dy = 0;
185	rect.width = info->var.xres_virtual;
186	rect.height = info->var.yres_virtual;
187	rect.color = 0;
188	rect.rop = ROP_COPY;
189	info->fbops->fb_fillrect(info, &rect);
190	}
191
192	static int
193	nouveau_fbcon_create(struct drm_device *dev, uint32_t fb_width,
194	uint32_t fb_height, uint32_t surface_width,
195	uint32_t surface_height, uint32_t surface_depth,
196	uint32_t surface_bpp, struct drm_framebuffer **pfb)
197	{
198	struct drm_nouveau_private *dev_priv = dev->dev_private;
199	struct fb_info *info;
200	struct nouveau_fbcon_par *par;
201	struct drm_framebuffer *fb;
202	struct nouveau_framebuffer *nouveau_fb;
203	struct nouveau_bo *nvbo;
204	struct drm_mode_fb_cmd mode_cmd;
205	struct device *device = &dev->pdev->dev;
206	int size, ret;
207
208	mode_cmd.width = surface_width;
209	mode_cmd.height = surface_height;
210
211	mode_cmd.bpp = surface_bpp;
212	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
1c7059e4	213	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
6ee73861 BS	214	mode_cmd.depth = surface_depth;
	215
	216	size = mode_cmd.pitch * mode_cmd.height;
1c7059e4	217	size = roundup(size, PAGE_SIZE);
6ee73861 BS	218
	219	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
	220	0, 0x0000, false, true, &nvbo);
	221	if (ret) {
	222	NV_ERROR(dev, "failed to allocate framebuffer\n");
	223	goto out;
	224	}
	225
	226	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	227	if (ret) {
	228	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	229	nouveau_bo_ref(NULL, &nvbo);
	230	goto out;
	231	}
	232
	233	ret = nouveau_bo_map(nvbo);
	234	if (ret) {
	235	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	236	nouveau_bo_unpin(nvbo);
	237	nouveau_bo_ref(NULL, &nvbo);
	238	goto out;
	239	}
	240
	241	mutex_lock(&dev->struct_mutex);
	242
	243	fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd);
	244	if (!fb) {
	245	ret = -ENOMEM;
	246	NV_ERROR(dev, "failed to allocate fb.\n");
	247	goto out_unref;
	248	}
	249
	250	list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
	251
	252	nouveau_fb = nouveau_framebuffer(fb);
	253	*pfb = fb;
	254
	255	info = framebuffer_alloc(sizeof(struct nouveau_fbcon_par), device);
	256	if (!info) {
	257	ret = -ENOMEM;
	258	goto out_unref;
	259	}
	260
	261	par = info->par;
	262	par->helper.funcs = &nouveau_fbcon_helper_funcs;
	263	par->helper.dev = dev;
	264	ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4);
	265	if (ret)
	266	goto out_unref;
	267	dev_priv->fbdev_info = info;
	268
	269	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	270	if (nouveau_nofbaccel)
	271	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	272	else
	273	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	274	FBINFO_HWACCEL_FILLRECT \|
	275	FBINFO_HWACCEL_IMAGEBLIT;
6ee73861 BS	276	info->fbops = &nouveau_fbcon_ops;
	277	info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
	278	dev_priv->vm_vram_base;
	279	info->fix.smem_len = size;
	280
	281	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	282	info->screen_size = size;
	283
	284	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
	285	drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
	286
	287	/* FIXME: we really shouldn't expose mmio space at all */
	288	info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
	289	info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
	290
	291	/* Set aperture base/size for vesafb takeover */
	292	#if defined(__i386__) \|\| defined(__x86_64__)
	293	if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
	294	/* Some NVIDIA VBIOS' are stupid and decide to put the
	295	* framebuffer in the middle of the PRAMIN BAR for
	296	* whatever reason. We need to know the exact lfb_base
	297	* to get vesafb kicked off, and the only reliable way
	298	* we have left is to find out lfb_base the same way
	299	* vesafb did.
	300	*/
	301	info->aperture_base = screen_info.lfb_base;
	302	info->aperture_size = screen_info.lfb_size;
	303	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
	304	info->aperture_size *= 65536;
	305	} else
	306	#endif
	307	{
	308	info->aperture_base = info->fix.mmio_start;
	309	info->aperture_size = info->fix.mmio_len;
	310	}
	311
	312	info->pixmap.size = 64*1024;
	313	info->pixmap.buf_align = 8;
	314	info->pixmap.access_align = 32;
	315	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	316	info->pixmap.scan_align = 1;
	317
	318	fb->fbdev = info;
	319
	320	par->nouveau_fb = nouveau_fb;
	321	par->dev = dev;
	322
a32ed69d	323	if (dev_priv->channel && !nouveau_nofbaccel) {
0735f62e BS	324	switch (dev_priv->card_type) {
	325	case NV_50:
	326	nv50_fbcon_accel_init(info);
	327	break;
	328	default:
	329	nv04_fbcon_accel_init(info);
	330	break;
	331	};
	332	}
6ee73861 BS	333
	334	nouveau_fbcon_zfill(dev);
	335
	336	/* To allow resizeing without swapping buffers */
	337	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	338	nouveau_fb->base.width,
	339	nouveau_fb->base.height,
	340	nvbo->bo.offset, nvbo);
	341
	342	mutex_unlock(&dev->struct_mutex);
	343	return 0;
	344
	345	out_unref:
	346	mutex_unlock(&dev->struct_mutex);
	347	out:
	348	return ret;
	349	}
	350
	351	int
	352	nouveau_fbcon_probe(struct drm_device *dev)
	353	{
ef2bb506	354	NV_DEBUG_KMS(dev, "\n");
6ee73861 BS	355
	356	return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create);
	357	}
	358
	359	int
	360	nouveau_fbcon_remove(struct drm_device dev, struct drm_framebuffer fb)
	361	{
	362	struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb);
	363	struct fb_info *info;
	364
	365	if (!fb)
	366	return -EINVAL;
	367
	368	info = fb->fbdev;
	369	if (info) {
	370	struct nouveau_fbcon_par *par = info->par;
	371
	372	unregister_framebuffer(info);
	373	nouveau_bo_unmap(nouveau_fb->nvbo);
	374	mutex_lock(&dev->struct_mutex);
	375	drm_gem_object_unreference(nouveau_fb->nvbo->gem);
	376	nouveau_fb->nvbo = NULL;
	377	mutex_unlock(&dev->struct_mutex);
	378	if (par)
	379	drm_fb_helper_free(&par->helper);
	380	framebuffer_release(info);
	381	}
	382
	383	return 0;
	384	}
846975a9 MS	385
	386	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	387	{
	388	struct nouveau_fbcon_par *par = info->par;
	389	struct drm_device *dev = par->dev;
	390
	391	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	392	info->flags \|= FBINFO_HWACCEL_DISABLED;
	393	}