[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 <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>

#include "nouveau_drm.h"
#include "nouveau_gem.h"
#include "nouveau_bo.h"
#include "nouveau_fbcon.h"
#include "nouveau_chan.h"

#include "nouveau_crtc.h"

MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
static int nouveau_nofbaccel = 0;
module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);

static void
nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nvif_device *device = &drm->device;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
			ret = nv04_fbcon_fillrect(info, rect);
		else
		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
			ret = nv50_fbcon_fillrect(info, rect);
		else
			ret = nvc0_fbcon_fillrect(info, rect);
		mutex_unlock(&drm->client.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 *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nvif_device *device = &drm->device;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
			ret = nv04_fbcon_copyarea(info, image);
		else
		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
			ret = nv50_fbcon_copyarea(info, image);
		else
			ret = nvc0_fbcon_copyarea(info, image);
		mutex_unlock(&drm->client.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 *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nvif_device *device = &drm->device;
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
			ret = nv04_fbcon_imageblit(info, image);
		else
		if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
			ret = nv50_fbcon_imageblit(info, image);
		else
			ret = nvc0_fbcon_imageblit(info, image);
		mutex_unlock(&drm->client.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 *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nouveau_channel *chan = drm->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(&drm->client.mutex))
		return 0;

	ret = nouveau_channel_idle(chan);
	mutex_unlock(&drm->client.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,
};

void
nouveau_fbcon_accel_save_disable(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	if (drm->fbcon) {
		drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
		drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
	}
}

void
nouveau_fbcon_accel_restore(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	if (drm->fbcon) {
		drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
	}
}

void
nouveau_fbcon_accel_fini(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_fbdev *fbcon = drm->fbcon;
	if (fbcon && drm->channel) {
		console_lock();
		fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
		console_unlock();
		nouveau_channel_idle(drm->channel);
		nvif_object_fini(&fbcon->twod);
		nvif_object_fini(&fbcon->blit);
		nvif_object_fini(&fbcon->gdi);
		nvif_object_fini(&fbcon->patt);
		nvif_object_fini(&fbcon->rop);
		nvif_object_fini(&fbcon->clip);
		nvif_object_fini(&fbcon->surf2d);
	}
}

void
nouveau_fbcon_accel_init(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_fbdev *fbcon = drm->fbcon;
	struct fb_info *info = fbcon->helper.fbdev;
	int ret;

	if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
		ret = nv04_fbcon_accel_init(info);
	else
	if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
		ret = nv50_fbcon_accel_init(info);
	else
		ret = nvc0_fbcon_accel_init(info);

	if (ret == 0)
		info->fbops = &nouveau_fbcon_ops;
}

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 *fbcon)
{
	struct fb_info *info = fbcon->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 drm_fb_helper *helper,
		     struct drm_fb_helper_surface_size *sizes)
{
	struct nouveau_fbdev *fbcon = (struct nouveau_fbdev *)helper;
	struct drm_device *dev = fbcon->dev;
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvif_device *device = &drm->device;
	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;
	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(drm, "failed to allocate framebuffer\n");
		goto out;
	}

	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	if (ret) {
		NV_ERROR(drm, "failed to pin fb: %d\n", ret);
		goto out_unref;
	}

	ret = nouveau_bo_map(nvbo);
	if (ret) {
		NV_ERROR(drm, "failed to map fb: %d\n", ret);
		goto out_unpin;
	}

	chan = nouveau_nofbaccel ? NULL : drm->channel;
	if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
		ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
					&fbcon->nouveau_fb.vma);
		if (ret) {
			NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
			chan = NULL;
		}
	}

	mutex_lock(&dev->struct_mutex);

	info = framebuffer_alloc(0, &pdev->dev);
	if (!info) {
		ret = -ENOMEM;
		goto out_unlock;
	}

	ret = fb_alloc_cmap(&info->cmap, 256, 0);
	if (ret) {
		ret = -ENOMEM;
		framebuffer_release(info);
		goto out_unlock;
	}

	info->par = fbcon;

	nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);

	nouveau_fb = &fbcon->nouveau_fb;
	fb = &nouveau_fb->base;

	/* setup helper */
	fbcon->helper.fb = fb;
	fbcon->helper.fbdev = info;

	strcpy(info->fix.id, "nouveaufb");
	if (!chan)
		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, &fbcon->helper, sizes->fb_width, sizes->fb_height);

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

	mutex_unlock(&dev->struct_mutex);

	if (chan)
		nouveau_fbcon_accel_init(dev);
	nouveau_fbcon_zfill(dev, fbcon);

	/* To allow resizeing without swapping buffers */
	NV_INFO(drm, "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_unlock:
	mutex_unlock(&dev->struct_mutex);
	if (chan)
		nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
	nouveau_bo_unmap(nvbo);
out_unpin:
	nouveau_bo_unpin(nvbo);
out_unref:
	nouveau_bo_ref(NULL, &nvbo);
out:
	return ret;
}

void
nouveau_fbcon_output_poll_changed(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	if (drm->fbcon)
		drm_fb_helper_hotplug_event(&drm->fbcon->helper);
}

static int
nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon)
{
	struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
	struct fb_info *info;

	if (fbcon->helper.fbdev) {
		info = fbcon->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);
		nouveau_bo_unpin(nouveau_fb->nvbo);
		drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
		nouveau_fb->nvbo = NULL;
	}
	drm_fb_helper_fini(&fbcon->helper);
	drm_framebuffer_unregister_private(&nouveau_fb->base);
	drm_framebuffer_cleanup(&nouveau_fb->base);
	return 0;
}

void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);

	NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
	info->flags |= FBINFO_HWACCEL_DISABLED;
}

static const 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_create,
};


int
nouveau_fbcon_init(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_fbdev *fbcon;
	int preferred_bpp;
	int ret;

	if (!dev->mode_config.num_crtc ||
	    (dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
		return 0;

	fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	if (!fbcon)
		return -ENOMEM;

	fbcon->dev = dev;
	drm->fbcon = fbcon;

	drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);

	ret = drm_fb_helper_init(dev, &fbcon->helper,
				 dev->mode_config.num_crtc, 4);
	if (ret) {
		kfree(fbcon);
		return ret;
	}

	drm_fb_helper_single_add_all_connectors(&fbcon->helper);

	if (drm->device.info.ram_size <= 32 * 1024 * 1024)
		preferred_bpp = 8;
	else
	if (drm->device.info.ram_size <= 64 * 1024 * 1024)
		preferred_bpp = 16;
	else
		preferred_bpp = 32;

	/* disable all the possible outputs/crtcs before entering KMS mode */
	drm_helper_disable_unused_functions(dev);

	drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
	return 0;
}

void
nouveau_fbcon_fini(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);

	if (!drm->fbcon)
		return;

	nouveau_fbcon_accel_fini(dev);
	nouveau_fbcon_destroy(dev, drm->fbcon);
	kfree(drm->fbcon);
	drm->fbcon = NULL;
}

void
nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	if (drm->fbcon) {
		console_lock();
		if (state == 0) {
			nouveau_fbcon_accel_restore(dev);
			nouveau_fbcon_zfill(dev, drm->fbcon);
		}
		fb_set_suspend(drm->fbcon->helper.fbdev, state);
		if (state == 1)
			nouveau_fbcon_accel_save_disable(dev);
		console_unlock();
	}
}
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>
ebb945a9 BS	45
	46	#include "nouveau_drm.h"
	47	#include "nouveau_gem.h"
	48	#include "nouveau_bo.h"
6ee73861	49	#include "nouveau_fbcon.h"
ebb945a9 BS	50	#include "nouveau_chan.h"
	51
	52	#include "nouveau_crtc.h"
	53
ebb945a9 BS	54	MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
	55	static int nouveau_nofbaccel = 0;
	56	module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
6ee73861	57
ceed5f30 BS	58	static void
	59	nouveau_fbcon_fillrect(struct fb_info info, const struct fb_fillrect rect)
	60	{
ebb945a9	61	struct nouveau_fbdev *fbcon = info->par;
77145f1c	62	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
967e7bde	63	struct nvif_device *device = &drm->device;
ceed5f30 BS	64	int ret;
	65
	66	if (info->state != FBINFO_STATE_RUNNING)
	67	return;
	68
	69	ret = -ENODEV;
9acc8100	70	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9	71	mutex_trylock(&drm->client.mutex)) {
967e7bde	72	if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ceed5f30 BS	73	ret = nv04_fbcon_fillrect(info, rect);
ceed5f30 BS	74	else
967e7bde	75	if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ceed5f30	76	ret = nv50_fbcon_fillrect(info, rect);
ddbaf79a BS	77	else
ddbaf79a BS	78	ret = nvc0_fbcon_fillrect(info, rect);
ebb945a9	79	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	80	}
	81
	82	if (ret == 0)
	83	return;
	84
	85	if (ret != -ENODEV)
	86	nouveau_fbcon_gpu_lockup(info);
	87	cfb_fillrect(info, rect);
	88	}
	89
	90	static void
	91	nouveau_fbcon_copyarea(struct fb_info info, const struct fb_copyarea image)
	92	{
ebb945a9	93	struct nouveau_fbdev *fbcon = info->par;
77145f1c	94	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
967e7bde	95	struct nvif_device *device = &drm->device;
ceed5f30 BS	96	int ret;
	97
	98	if (info->state != FBINFO_STATE_RUNNING)
	99	return;
	100
	101	ret = -ENODEV;
9acc8100	102	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9	103	mutex_trylock(&drm->client.mutex)) {
967e7bde	104	if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ceed5f30 BS	105	ret = nv04_fbcon_copyarea(info, image);
ceed5f30 BS	106	else
967e7bde	107	if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ceed5f30	108	ret = nv50_fbcon_copyarea(info, image);
ddbaf79a BS	109	else
ddbaf79a BS	110	ret = nvc0_fbcon_copyarea(info, image);
ebb945a9	111	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	112	}
	113
	114	if (ret == 0)
	115	return;
	116
	117	if (ret != -ENODEV)
	118	nouveau_fbcon_gpu_lockup(info);
	119	cfb_copyarea(info, image);
	120	}
	121
	122	static void
	123	nouveau_fbcon_imageblit(struct fb_info info, const struct fb_image image)
	124	{
ebb945a9	125	struct nouveau_fbdev *fbcon = info->par;
77145f1c	126	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
967e7bde	127	struct nvif_device *device = &drm->device;
ceed5f30 BS	128	int ret;
	129
	130	if (info->state != FBINFO_STATE_RUNNING)
	131	return;
	132
	133	ret = -ENODEV;
9acc8100	134	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9	135	mutex_trylock(&drm->client.mutex)) {
967e7bde	136	if (device->info.family < NV_DEVICE_INFO_V0_TESLA)
ceed5f30 BS	137	ret = nv04_fbcon_imageblit(info, image);
ceed5f30 BS	138	else
967e7bde	139	if (device->info.family < NV_DEVICE_INFO_V0_FERMI)
ceed5f30	140	ret = nv50_fbcon_imageblit(info, image);
ddbaf79a BS	141	else
ddbaf79a BS	142	ret = nvc0_fbcon_imageblit(info, image);
ebb945a9	143	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	144	}
	145
	146	if (ret == 0)
	147	return;
	148
	149	if (ret != -ENODEV)
	150	nouveau_fbcon_gpu_lockup(info);
	151	cfb_imageblit(info, image);
	152	}
	153
6ee73861 BS	154	static int
	155	nouveau_fbcon_sync(struct fb_info *info)
	156	{
ebb945a9	157	struct nouveau_fbdev *fbcon = info->par;
77145f1c	158	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
ebb945a9	159	struct nouveau_channel *chan = drm->channel;
78df3a1c	160	int ret;
6ee73861	161
6a6b73f2	162	if (!chan \|\| !chan->accel_done \|\| in_interrupt() \|\|
6ee73861 BS	163	info->state != FBINFO_STATE_RUNNING \|\|
	164	info->flags & FBINFO_HWACCEL_DISABLED)
	165	return 0;
	166
ebb945a9	167	if (!mutex_trylock(&drm->client.mutex))
9acc8100 BS	168	return 0;
9acc8100 BS	169
78df3a1c	170	ret = nouveau_channel_idle(chan);
ebb945a9	171	mutex_unlock(&drm->client.mutex);
6ee73861	172	if (ret) {
846975a9	173	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	174	return 0;
	175	}
	176
	177	chan->accel_done = false;
	178	return 0;
	179	}
	180
	181	static struct fb_ops nouveau_fbcon_ops = {
	182	.owner = THIS_MODULE,
	183	.fb_check_var = drm_fb_helper_check_var,
	184	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	185	.fb_fillrect = nouveau_fbcon_fillrect,
	186	.fb_copyarea = nouveau_fbcon_copyarea,
	187	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	188	.fb_sync = nouveau_fbcon_sync,
	189	.fb_pan_display = drm_fb_helper_pan_display,
	190	.fb_blank = drm_fb_helper_blank,
	191	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	192	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	193	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	194	};
6ee73861 BS	195
ceed5f30	196	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	197	.owner = THIS_MODULE,
	198	.fb_check_var = drm_fb_helper_check_var,
	199	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	200	.fb_fillrect = cfb_fillrect,
	201	.fb_copyarea = cfb_copyarea,
	202	.fb_imageblit = cfb_imageblit,
126b5440 MK	203	.fb_pan_display = drm_fb_helper_pan_display,
	204	.fb_blank = drm_fb_helper_blank,
	205	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	206	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	207	.fb_debug_leave = drm_fb_helper_debug_leave,
126b5440 MK	208	};
126b5440 MK	209
4b5098f3 BS	210	void
	211	nouveau_fbcon_accel_save_disable(struct drm_device *dev)
	212	{
	213	struct nouveau_drm *drm = nouveau_drm(dev);
	214	if (drm->fbcon) {
	215	drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
	216	drm->fbcon->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	217	}
	218	}
	219
	220	void
	221	nouveau_fbcon_accel_restore(struct drm_device *dev)
	222	{
	223	struct nouveau_drm *drm = nouveau_drm(dev);
	224	if (drm->fbcon) {
	225	drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
	226	}
	227	}
	228
	229	void
	230	nouveau_fbcon_accel_fini(struct drm_device *dev)
	231	{
	232	struct nouveau_drm *drm = nouveau_drm(dev);
	233	struct nouveau_fbdev *fbcon = drm->fbcon;
	234	if (fbcon && drm->channel) {
	235	console_lock();
	236	fbcon->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	237	console_unlock();
	238	nouveau_channel_idle(drm->channel);
0ad72863 BS	239	nvif_object_fini(&fbcon->twod);
	240	nvif_object_fini(&fbcon->blit);
	241	nvif_object_fini(&fbcon->gdi);
	242	nvif_object_fini(&fbcon->patt);
	243	nvif_object_fini(&fbcon->rop);
	244	nvif_object_fini(&fbcon->clip);
	245	nvif_object_fini(&fbcon->surf2d);
4b5098f3 BS	246	}
	247	}
	248
	249	void
	250	nouveau_fbcon_accel_init(struct drm_device *dev)
	251	{
	252	struct nouveau_drm *drm = nouveau_drm(dev);
	253	struct nouveau_fbdev *fbcon = drm->fbcon;
	254	struct fb_info *info = fbcon->helper.fbdev;
	255	int ret;
	256
967e7bde	257	if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA)
4b5098f3 BS	258	ret = nv04_fbcon_accel_init(info);
4b5098f3 BS	259	else
967e7bde	260	if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
4b5098f3 BS	261	ret = nv50_fbcon_accel_init(info);
	262	else
	263	ret = nvc0_fbcon_accel_init(info);
	264
	265	if (ret == 0)
	266	info->fbops = &nouveau_fbcon_ops;
	267	}
	268
6ee73861 BS	269	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	270	u16 blue, int regno)
	271	{
	272	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	273
	274	nv_crtc->lut.r[regno] = red;
	275	nv_crtc->lut.g[regno] = green;
	276	nv_crtc->lut.b[regno] = blue;
	277	}
	278
	279	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	280	u16 *blue, int regno)
	281	{
	282	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	283
	284	*red = nv_crtc->lut.r[regno];
	285	*green = nv_crtc->lut.g[regno];
	286	*blue = nv_crtc->lut.b[regno];
	287	}
	288
38651674	289	static void
ebb945a9	290	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev fbcon)
6ee73861	291	{
ebb945a9	292	struct fb_info *info = fbcon->helper.fbdev;
6ee73861 BS	293	struct fb_fillrect rect;
	294
	295	/* Clear the entire fbcon. The drm will program every connector
	296	* with it's preferred mode. If the sizes differ, one display will
	297	* quite likely have garbage around the console.
	298	*/
	299	rect.dx = rect.dy = 0;
	300	rect.width = info->var.xres_virtual;
	301	rect.height = info->var.yres_virtual;
	302	rect.color = 0;
	303	rect.rop = ROP_COPY;
	304	info->fbops->fb_fillrect(info, &rect);
	305	}
	306
	307	static int
cd5428a5	308	nouveau_fbcon_create(struct drm_fb_helper *helper,
8be48d92	309	struct drm_fb_helper_surface_size *sizes)
6ee73861	310	{
cd5428a5	311	struct nouveau_fbdev fbcon = (struct nouveau_fbdev )helper;
ebb945a9	312	struct drm_device *dev = fbcon->dev;
77145f1c	313	struct nouveau_drm *drm = nouveau_drm(dev);
967e7bde	314	struct nvif_device *device = &drm->device;
6ee73861	315	struct fb_info *info;
6ee73861 BS	316	struct drm_framebuffer *fb;
6ee73861 BS	317	struct nouveau_framebuffer *nouveau_fb;
45143cb5	318	struct nouveau_channel *chan;
6ee73861	319	struct nouveau_bo *nvbo;
308e5bcb	320	struct drm_mode_fb_cmd2 mode_cmd;
1471ca9a	321	struct pci_dev *pdev = dev->pdev;
6ee73861 BS	322	int size, ret;
6ee73861 BS	323
38651674 DA	324	mode_cmd.width = sizes->surface_width;
38651674 DA	325	mode_cmd.height = sizes->surface_height;
6ee73861	326
308e5bcb JB	327	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
308e5bcb JB	328	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
6ee73861	329
308e5bcb JB	330	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	331	sizes->surface_depth);
	332
	333	size = mode_cmd.pitches[0] * mode_cmd.height;
1c7059e4	334	size = roundup(size, PAGE_SIZE);
6ee73861	335
f6d4e621 BS	336	ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
f6d4e621 BS	337	0, 0x0000, &nvbo);
6ee73861	338	if (ret) {
ebb945a9	339	NV_ERROR(drm, "failed to allocate framebuffer\n");
6ee73861 BS	340	goto out;
	341	}
	342
	343	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	344	if (ret) {
ebb945a9	345	NV_ERROR(drm, "failed to pin fb: %d\n", ret);
1e2bd5f5	346	goto out_unref;
6ee73861 BS	347	}
	348
	349	ret = nouveau_bo_map(nvbo);
	350	if (ret) {
ebb945a9	351	NV_ERROR(drm, "failed to map fb: %d\n", ret);
1e2bd5f5	352	goto out_unpin;
6ee73861 BS	353	}
6ee73861 BS	354
ebb945a9	355	chan = nouveau_nofbaccel ? NULL : drm->channel;
967e7bde	356	if (chan && device->info.family >= NV_DEVICE_INFO_V0_TESLA) {
0ad72863	357	ret = nouveau_bo_vma_add(nvbo, drm->client.vm,
ebb945a9	358	&fbcon->nouveau_fb.vma);
45143cb5	359	if (ret) {
ebb945a9	360	NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
45143cb5 BS	361	chan = NULL;
	362	}
	363	}
	364
6ee73861 BS	365	mutex_lock(&dev->struct_mutex);
6ee73861 BS	366
ebb945a9	367	info = framebuffer_alloc(0, &pdev->dev);
6ee73861	368	if (!info) {
6ee73861	369	ret = -ENOMEM;
1e2bd5f5	370	goto out_unlock;
6ee73861 BS	371	}
6ee73861 BS	372
4abe3520 DA	373	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	374	if (ret) {
6ee73861	375	ret = -ENOMEM;
1e2bd5f5 ML	376	framebuffer_release(info);
1e2bd5f5 ML	377	goto out_unlock;
6ee73861 BS	378	}
6ee73861 BS	379
ebb945a9	380	info->par = fbcon;
38651674	381
ebb945a9	382	nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
38651674	383
ebb945a9	384	nouveau_fb = &fbcon->nouveau_fb;
8be48d92	385	fb = &nouveau_fb->base;
38651674	386
8be48d92	387	/* setup helper */
ebb945a9 BS	388	fbcon->helper.fb = fb;
ebb945a9 BS	389	fbcon->helper.fbdev = info;
6ee73861 BS	390
6ee73861 BS	391	strcpy(info->fix.id, "nouveaufb");
1e2bd5f5	392	if (!chan)
a32ed69d MK	393	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	394	else
	395	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	396	FBINFO_HWACCEL_FILLRECT \|
	397	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	398	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	399	info->fbops = &nouveau_fbcon_sw_ops;
f01a9720 BS	400	info->fix.smem_start = nvbo->bo.mem.bus.base +
f01a9720 BS	401	nvbo->bo.mem.bus.offset;
6ee73861 BS	402	info->fix.smem_len = size;
	403
	404	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	405	info->screen_size = size;
	406
01f2c773	407	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
ebb945a9	408	drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
1471ca9a	409
fb2a99e1	410	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
6ee73861	411
6a6b73f2 BS	412	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	413
4b5098f3 BS	414	if (chan)
4b5098f3 BS	415	nouveau_fbcon_accel_init(dev);
ebb945a9	416	nouveau_fbcon_zfill(dev, fbcon);
6ee73861 BS	417
6ee73861 BS	418	/* To allow resizeing without swapping buffers */
ebb945a9 BS	419	NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
	420	nouveau_fb->base.width, nouveau_fb->base.height,
	421	nvbo->bo.offset, nvbo);
6ee73861	422
6a9ee8af	423	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	424	return 0;
6ee73861 BS	425
1e2bd5f5	426	out_unlock:
6ee73861	427	mutex_unlock(&dev->struct_mutex);
1e2bd5f5 ML	428	if (chan)
1e2bd5f5 ML	429	nouveau_bo_vma_del(nvbo, &fbcon->nouveau_fb.vma);
fdfb8332	430	nouveau_bo_unmap(nvbo);
1e2bd5f5 ML	431	out_unpin:
	432	nouveau_bo_unpin(nvbo);
	433	out_unref:
	434	nouveau_bo_ref(NULL, &nvbo);
6ee73861 BS	435	out:
	436	return ret;
	437	}
	438
eb1f8e4f DA	439	void
eb1f8e4f DA	440	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	441	{
77145f1c	442	struct nouveau_drm *drm = nouveau_drm(dev);
8a258353 ML	443	if (drm->fbcon)
8a258353 ML	444	drm_fb_helper_hotplug_event(&drm->fbcon->helper);
6ee73861 BS	445	}
6ee73861 BS	446
6e86e041	447	static int
ebb945a9	448	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev fbcon)
6ee73861	449	{
ebb945a9	450	struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
6ee73861 BS	451	struct fb_info *info;
6ee73861 BS	452
ebb945a9 BS	453	if (fbcon->helper.fbdev) {
ebb945a9 BS	454	info = fbcon->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);
1e2bd5f5	464	nouveau_bo_unpin(nouveau_fb->nvbo);
55fb74ad	465	drm_gem_object_unreference_unlocked(&nouveau_fb->nvbo->gem);
6ee73861	466	nouveau_fb->nvbo = NULL;
6ee73861	467	}
ebb945a9	468	drm_fb_helper_fini(&fbcon->helper);
36206361	469	drm_framebuffer_unregister_private(&nouveau_fb->base);
38651674	470	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	471	return 0;
6ee73861 BS	472	}
846975a9 MS	473
	474	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	475	{
ebb945a9	476	struct nouveau_fbdev *fbcon = info->par;
77145f1c	477	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
846975a9	478
ebb945a9	479	NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
846975a9 MS	480	info->flags \|= FBINFO_HWACCEL_DISABLED;
846975a9 MS	481	}
38651674	482
3a493879	483	static const struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
4abe3520 DA	484	.gamma_set = nouveau_fbcon_gamma_set,
4abe3520 DA	485	.gamma_get = nouveau_fbcon_gamma_get,
cd5428a5	486	.fb_probe = nouveau_fbcon_create,
4abe3520 DA	487	};
	488
	489
ebb945a9 BS	490	int
ebb945a9 BS	491	nouveau_fbcon_init(struct drm_device *dev)
38651674	492	{
77145f1c	493	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9	494	struct nouveau_fbdev *fbcon;
1e482f75	495	int preferred_bpp;
5a79395b	496	int ret;
8be48d92	497
fc162088 BS	498	if (!dev->mode_config.num_crtc \|\|
fc162088 BS	499	(dev->pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
ebb945a9 BS	500	return 0;
	501
	502	fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	503	if (!fbcon)
8be48d92 DA	504	return -ENOMEM;
8be48d92 DA	505
ebb945a9 BS	506	fbcon->dev = dev;
ebb945a9 BS	507	drm->fbcon = fbcon;
10a23102 TR	508
10a23102 TR	509	drm_fb_helper_prepare(dev, &fbcon->helper, &nouveau_fbcon_helper_funcs);
8be48d92	510
ebb945a9	511	ret = drm_fb_helper_init(dev, &fbcon->helper,
9bd0c15f	512	dev->mode_config.num_crtc, 4);
5a79395b	513	if (ret) {
ebb945a9	514	kfree(fbcon);
5a79395b CW	515	return ret;
	516	}
	517
ebb945a9	518	drm_fb_helper_single_add_all_connectors(&fbcon->helper);
1e482f75	519
f392ec4b	520	if (drm->device.info.ram_size <= 32 * 1024 * 1024)
1e482f75	521	preferred_bpp = 8;
ebb945a9	522	else
f392ec4b	523	if (drm->device.info.ram_size <= 64 * 1024 * 1024)
1e482f75 MS	524	preferred_bpp = 16;
	525	else
	526	preferred_bpp = 32;
	527
76a39dbf DV	528	/* disable all the possible outputs/crtcs before entering KMS mode */
	529	drm_helper_disable_unused_functions(dev);
	530
ebb945a9	531	drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
38651674 DA	532	return 0;
	533	}
	534
ebb945a9 BS	535	void
ebb945a9 BS	536	nouveau_fbcon_fini(struct drm_device *dev)
38651674	537	{
77145f1c	538	struct nouveau_drm *drm = nouveau_drm(dev);
8be48d92	539
ebb945a9	540	if (!drm->fbcon)
8be48d92 DA	541	return;
8be48d92 DA	542
4b5098f3	543	nouveau_fbcon_accel_fini(dev);
ebb945a9 BS	544	nouveau_fbcon_destroy(dev, drm->fbcon);
	545	kfree(drm->fbcon);
	546	drm->fbcon = NULL;
38651674 DA	547	}
38651674 DA	548
46ea1688 BS	549	void
46ea1688 BS	550	nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
38651674	551	{
77145f1c	552	struct nouveau_drm *drm = nouveau_drm(dev);
46ea1688 BS	553	if (drm->fbcon) {
46ea1688 BS	554	console_lock();
028791bb	555	if (state == 0) {
4b5098f3	556	nouveau_fbcon_accel_restore(dev);
028791bb BS	557	nouveau_fbcon_zfill(dev, drm->fbcon);
028791bb BS	558	}
04384435 BS	559	fb_set_suspend(drm->fbcon->helper.fbdev, state);
	560	if (state == 1)
	561	nouveau_fbcon_accel_save_disable(dev);
46ea1688 BS	562	console_unlock();
46ea1688 BS	563	}
38651674	564	}