drivers/gpu/drm/nouveau/nouveau_abi16.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright 2012 Red Hat Inc.
  *
  * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
  *
  */

 #include <core/object.h>
 #include <core/client.h>
 #include <core/device.h>
 #include <core/class.h>
 #include <core/mm.h>

 #include <subdev/fb.h>
 #include <subdev/timer.h>
 #include <subdev/instmem.h>

 #include "nouveau_drm.h"
 #include "nouveau_dma.h"
 #include "nouveau_gem.h"
 #include "nouveau_chan.h"
 #include "nouveau_abi16.h"

 struct nouveau_abi16 *
 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
 {
 	struct nouveau_cli *cli = nouveau_cli(file_priv);
 	mutex_lock(&cli->mutex);
 	if (!cli->abi16) {
 		struct nouveau_abi16 *abi16;
 		cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
 		if (cli->abi16) {
 			INIT_LIST_HEAD(&abi16->channels);
 			abi16->client = nv_object(cli);

 			/* allocate device object targeting client's default
 			 * device (ie. the one that belongs to the fd it
 			 * opened)
 			 */
 			if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
 					       NVDRM_DEVICE, 0x0080,
 					       &(struct nv_device_class) {
 						.device = ~0ULL,
 					       },
 					       sizeof(struct nv_device_class),
 					       &abi16->device) == 0)
 				return cli->abi16;

 			kfree(cli->abi16);
 			cli->abi16 = NULL;
 		}

 		mutex_unlock(&cli->mutex);
 	}
 	return cli->abi16;
 }

 int
 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
 {
 	struct nouveau_cli *cli = (void *)abi16->client;
 	mutex_unlock(&cli->mutex);
 	return ret;
 }

 u16
 nouveau_abi16_swclass(struct nouveau_drm *drm)
 {
 	switch (nv_device(drm->device)->card_type) {
 	case NV_04:
 		return 0x006e;
 	case NV_10:
 	case NV_20:
 	case NV_30:
 	case NV_40:
 		return 0x016e;
 	case NV_50:
 		return 0x506e;
 	case NV_C0:
 	case NV_D0:
 	case NV_E0:
 		return 0x906e;
 	}

 	return 0x0000;
 }

 static void
 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
 			struct nouveau_abi16_ntfy *ntfy)
 {
 	nouveau_mm_free(&chan->heap, &ntfy->node);
 	list_del(&ntfy->head);
 	kfree(ntfy);
 }

 static void
 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
 			struct nouveau_abi16_chan *chan)
 {
 	struct nouveau_abi16_ntfy *ntfy, *temp;

 	/* cleanup notifier state */
 	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
 		nouveau_abi16_ntfy_fini(chan, ntfy);
 	}

 	if (chan->ntfy) {
 		nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
 		drm_gem_object_unreference_unlocked(chan->ntfy->gem);
 	}

 	if (chan->heap.block_size)
 		nouveau_mm_fini(&chan->heap);

 	/* destroy channel object, all children will be killed too */
 	if (chan->chan) {
 		abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
 		nouveau_channel_del(&chan->chan);
 	}

 	list_del(&chan->head);
 	kfree(chan);
 }

 void
 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
 {
 	struct nouveau_cli *cli = (void *)abi16->client;
 	struct nouveau_abi16_chan *chan, *temp;

 	/* cleanup channels */
 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 		nouveau_abi16_chan_fini(abi16, chan);
 	}

 	/* destroy the device object */
 	nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);

 	kfree(cli->abi16);
 	cli->abi16 = NULL;
 }

 int
 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_device *device = nv_device(drm->device);
 	struct nouveau_timer *ptimer = nouveau_timer(device);
 	struct drm_nouveau_getparam *getparam = data;

 	switch (getparam->param) {
 	case NOUVEAU_GETPARAM_CHIPSET_ID:
 		getparam->value = device->chipset;
 		break;
 	case NOUVEAU_GETPARAM_PCI_VENDOR:
 		getparam->value = dev->pci_vendor;
 		break;
 	case NOUVEAU_GETPARAM_PCI_DEVICE:
 		getparam->value = dev->pci_device;
 		break;
 	case NOUVEAU_GETPARAM_BUS_TYPE:
 		if (drm_pci_device_is_agp(dev))
 			getparam->value = 0;
 		else
 		if (!pci_is_pcie(dev->pdev))
 			getparam->value = 1;
 		else
 			getparam->value = 2;
 		break;
 	case NOUVEAU_GETPARAM_FB_SIZE:
 		getparam->value = drm->gem.vram_available;
 		break;
 	case NOUVEAU_GETPARAM_AGP_SIZE:
 		getparam->value = drm->gem.gart_available;
 		break;
 	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
 		getparam->value = 0; /* deprecated */
 		break;
 	case NOUVEAU_GETPARAM_PTIMER_TIME:
 		getparam->value = ptimer->read(ptimer);
 		break;
 	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
 		getparam->value = 1;
 		break;
 	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
 		getparam->value = 1;
 		break;
 	case NOUVEAU_GETPARAM_GRAPH_UNITS:
 		/* NV40 and NV50 versions are quite different, but register
 		 * address is the same. User is supposed to know the card
 		 * family anyway... */
 		if (device->chipset >= 0x40) {
 			getparam->value = nv_rd32(device, 0x001540);
 			break;
 		}
 		/* FALLTHRU */
 	default:
 		nv_debug(device, "unknown parameter %lld\n", getparam->param);
 		return -EINVAL;
 	}

 	return 0;
 }

 int
 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
 {
 	return -EINVAL;
 }

 int
 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 {
 	struct drm_nouveau_channel_alloc *init = data;
 	struct nouveau_cli *cli = nouveau_cli(file_priv);
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 	struct nouveau_abi16_chan *chan;
 	struct nouveau_client *client;
 	struct nouveau_device *device;
 	struct nouveau_instmem *imem;
 	struct nouveau_fb *pfb;
 	int ret;

 	if (unlikely(!abi16))
 		return -ENOMEM;
 	client = nv_client(abi16->client);

 	if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
 		return nouveau_abi16_put(abi16, -EINVAL);

 	device = nv_device(abi16->device);
 	imem   = nouveau_instmem(device);
 	pfb    = nouveau_fb(device);

 	/* allocate "abi16 channel" data and make up a handle for it */
 	init->channel = ffsll(~abi16->handles);
 	if (!init->channel--)
 		return nouveau_abi16_put(abi16, -ENOSPC);

 	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 	if (!chan)
 		return nouveau_abi16_put(abi16, -ENOMEM);

 	INIT_LIST_HEAD(&chan->notifiers);
 	list_add(&chan->head, &abi16->channels);
 	abi16->handles |= (1 << init->channel);

 	/* create channel object and initialise dma and fence management */
 	if (device->card_type >= NV_E0) {
 		init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
 		init->tt_ctxdma_handle = 0;
 	}

 	ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
 				  init->channel, init->fb_ctxdma_handle,
 				  init->tt_ctxdma_handle, &chan->chan);
 	if (ret)
 		goto done;

 	if (device->card_type >= NV_50)
 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 					NOUVEAU_GEM_DOMAIN_GART;
 	else
 	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
 	else
 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;

 	if (device->card_type < NV_C0) {
 		init->subchan[0].handle = 0x00000000;
 		init->subchan[0].grclass = 0x0000;
 		init->subchan[1].handle = NvSw;
 		init->subchan[1].grclass = 0x506e;
 		init->nr_subchan = 2;
 	}

 	/* Named memory object area */
 	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
 			      0, 0, &chan->ntfy);
 	if (ret == 0)
 		ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
 	if (ret)
 		goto done;

 	if (device->card_type >= NV_50) {
 		ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
 					&chan->ntfy_vma);
 		if (ret)
 			goto done;
 	}

 	ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
 				    &init->notifier_handle);
 	if (ret)
 		goto done;

 	ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
 done:
 	if (ret)
 		nouveau_abi16_chan_fini(abi16, chan);
 	return nouveau_abi16_put(abi16, ret);
 }


 int
 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
 {
 	struct drm_nouveau_channel_free *req = data;
 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 	struct nouveau_abi16_chan *chan;
 	int ret = -ENOENT;

 	if (unlikely(!abi16))
 		return -ENOMEM;

 	list_for_each_entry(chan, &abi16->channels, head) {
 		if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
 			nouveau_abi16_chan_fini(abi16, chan);
 			return nouveau_abi16_put(abi16, 0);
 		}
 	}

 	return nouveau_abi16_put(abi16, ret);
 }

 int
 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
 {
 	struct drm_nouveau_grobj_alloc *init = data;
 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_object *object;
 	int ret;

 	if (unlikely(!abi16))
 		return -ENOMEM;

 	if (init->handle == ~0)
 		return nouveau_abi16_put(abi16, -EINVAL);

 	/* compatibility with userspace that assumes 506e for all chipsets */
 	if (init->class == 0x506e) {
 		init->class = nouveau_abi16_swclass(drm);
 		if (init->class == 0x906e)
 			return nouveau_abi16_put(abi16, 0);
 	}

 	ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
 				  init->handle, init->class, NULL, 0, &object);
 	return nouveau_abi16_put(abi16, ret);
 }

 int
 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
 {
 	struct drm_nouveau_notifierobj_alloc *info = data;
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_device *device = nv_device(drm->device);
 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 	struct nouveau_abi16_chan *chan, *temp;
 	struct nouveau_abi16_ntfy *ntfy;
 	struct nouveau_object *object;
 	struct nv_dma_class args;
 	int ret;

 	if (unlikely(!abi16))
 		return -ENOMEM;

 	/* completely unnecessary for these chipsets... */
 	if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
 		return nouveau_abi16_put(abi16, -EINVAL);

 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 		if (chan->chan->handle == (NVDRM_CHAN | info->channel))
 			break;
 		chan = NULL;
 	}

 	if (!chan)
 		return nouveau_abi16_put(abi16, -ENOENT);

 	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
 	if (!ntfy)
 		return nouveau_abi16_put(abi16, -ENOMEM);

 	list_add(&ntfy->head, &chan->notifiers);
 	ntfy->handle = info->handle;

 	ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
 			      &ntfy->node);
 	if (ret)
 		goto done;

 	args.start = ntfy->node->offset;
 	args.limit = ntfy->node->offset + ntfy->node->length - 1;
 	if (device->card_type >= NV_50) {
 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
 		args.start += chan->ntfy_vma.offset;
 		args.limit += chan->ntfy_vma.offset;
 	} else
 	if (drm->agp.stat == ENABLED) {
 		args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
 		args.start += drm->agp.base + chan->ntfy->bo.offset;
 		args.limit += drm->agp.base + chan->ntfy->bo.offset;
 	} else {
 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
 		args.start += chan->ntfy->bo.offset;
 		args.limit += chan->ntfy->bo.offset;
 	}

 	ret = nouveau_object_new(abi16->client, chan->chan->handle,
 				 ntfy->handle, 0x003d, &args,
 				 sizeof(args), &object);
 	if (ret)
 		goto done;

 done:
 	if (ret)
 		nouveau_abi16_ntfy_fini(chan, ntfy);
 	return nouveau_abi16_put(abi16, ret);
 }

 int
 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
 {
 	struct drm_nouveau_gpuobj_free *fini = data;
 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
 	struct nouveau_abi16_chan *chan, *temp;
 	struct nouveau_abi16_ntfy *ntfy;
 	int ret;

 	if (unlikely(!abi16))
 		return -ENOMEM;

 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
 		if (chan->chan->handle == (NVDRM_CHAN | fini->channel))
 			break;
 		chan = NULL;
 	}

 	if (!chan)
 		return nouveau_abi16_put(abi16, -ENOENT);

 	/* synchronize with the user channel and destroy the gpu object */
 	nouveau_channel_idle(chan->chan);

 	ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
 	if (ret)
 		return nouveau_abi16_put(abi16, ret);

 	/* cleanup extra state if this object was a notifier */
 	list_for_each_entry(ntfy, &chan->notifiers, head) {
 		if (ntfy->handle == fini->handle) {
 			nouveau_mm_free(&chan->heap, &ntfy->node);
 			list_del(&ntfy->head);
 			break;
 		}
 	}

 	return nouveau_abi16_put(abi16, 0);
 }
	/*
	* Copyright 2012 Red Hat Inc.
	*
	* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
	*
	*/

	#include <core/object.h>
	#include <core/client.h>
	#include <core/device.h>
	#include <core/class.h>
	#include <core/mm.h>

	#include <subdev/fb.h>
	#include <subdev/timer.h>
	#include <subdev/instmem.h>

	#include "nouveau_drm.h"
	#include "nouveau_dma.h"
	#include "nouveau_gem.h"
	#include "nouveau_chan.h"
	#include "nouveau_abi16.h"

	struct nouveau_abi16 *
	nouveau_abi16_get(struct drm_file file_priv, struct drm_device dev)
	{
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	mutex_lock(&cli->mutex);
	if (!cli->abi16) {
	struct nouveau_abi16 *abi16;
	cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
	if (cli->abi16) {
	INIT_LIST_HEAD(&abi16->channels);
	abi16->client = nv_object(cli);

	/* allocate device object targeting client's default
	* device (ie. the one that belongs to the fd it
	* opened)
	*/
	if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
	NVDRM_DEVICE, 0x0080,
	&(struct nv_device_class) {
	.device = ~0ULL,
	},
	sizeof(struct nv_device_class),
	&abi16->device) == 0)
	return cli->abi16;

	kfree(cli->abi16);
	cli->abi16 = NULL;
	}

	mutex_unlock(&cli->mutex);
	}
	return cli->abi16;
	}

	int
	nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
	{
	struct nouveau_cli cli = (void )abi16->client;
	mutex_unlock(&cli->mutex);
	return ret;
	}

	u16
	nouveau_abi16_swclass(struct nouveau_drm *drm)
	{
	switch (nv_device(drm->device)->card_type) {
	case NV_04:
	return 0x006e;
	case NV_10:
	case NV_20:
	case NV_30:
	case NV_40:
	return 0x016e;
	case NV_50:
	return 0x506e;
	case NV_C0:
	case NV_D0:
	case NV_E0:
	return 0x906e;
	}

	return 0x0000;
	}

	static void
	nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
	struct nouveau_abi16_ntfy *ntfy)
	{
	nouveau_mm_free(&chan->heap, &ntfy->node);
	list_del(&ntfy->head);
	kfree(ntfy);
	}

	static void
	nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
	struct nouveau_abi16_chan *chan)
	{
	struct nouveau_abi16_ntfy ntfy, temp;

	/* cleanup notifier state */
	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
	nouveau_abi16_ntfy_fini(chan, ntfy);
	}

	if (chan->ntfy) {
	nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
	drm_gem_object_unreference_unlocked(chan->ntfy->gem);
	}

	if (chan->heap.block_size)
	nouveau_mm_fini(&chan->heap);

	/* destroy channel object, all children will be killed too */
	if (chan->chan) {
	abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
	nouveau_channel_del(&chan->chan);
	}

	list_del(&chan->head);
	kfree(chan);
	}

	void
	nouveau_abi16_fini(struct nouveau_abi16 *abi16)
	{
	struct nouveau_cli cli = (void )abi16->client;
	struct nouveau_abi16_chan chan, temp;

	/* cleanup channels */
	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
	nouveau_abi16_chan_fini(abi16, chan);
	}

	/* destroy the device object */
	nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);

	kfree(cli->abi16);
	cli->abi16 = NULL;
	}

	int
	nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
	{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_device *device = nv_device(drm->device);
	struct nouveau_timer *ptimer = nouveau_timer(device);
	struct drm_nouveau_getparam *getparam = data;

	switch (getparam->param) {
	case NOUVEAU_GETPARAM_CHIPSET_ID:
	getparam->value = device->chipset;
	break;
	case NOUVEAU_GETPARAM_PCI_VENDOR:
	getparam->value = dev->pci_vendor;
	break;
	case NOUVEAU_GETPARAM_PCI_DEVICE:
	getparam->value = dev->pci_device;
	break;
	case NOUVEAU_GETPARAM_BUS_TYPE:
	if (drm_pci_device_is_agp(dev))
	getparam->value = 0;
	else
	if (!pci_is_pcie(dev->pdev))
	getparam->value = 1;
	else
	getparam->value = 2;
	break;
	case NOUVEAU_GETPARAM_FB_SIZE:
	getparam->value = drm->gem.vram_available;
	break;
	case NOUVEAU_GETPARAM_AGP_SIZE:
	getparam->value = drm->gem.gart_available;
	break;
	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
	getparam->value = 0; /* deprecated */
	break;
	case NOUVEAU_GETPARAM_PTIMER_TIME:
	getparam->value = ptimer->read(ptimer);
	break;
	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
	getparam->value = 1;
	break;
	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
	getparam->value = 1;
	break;
	case NOUVEAU_GETPARAM_GRAPH_UNITS:
	/* NV40 and NV50 versions are quite different, but register
	* address is the same. User is supposed to know the card
	* family anyway... */
	if (device->chipset >= 0x40) {
	getparam->value = nv_rd32(device, 0x001540);
	break;
	}
	/* FALLTHRU */
	default:
	nv_debug(device, "unknown parameter %lld\n", getparam->param);
	return -EINVAL;
	}

	return 0;
	}

	int
	nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
	{
	return -EINVAL;
	}

	int
	nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
	{
	struct drm_nouveau_channel_alloc *init = data;
	struct nouveau_cli *cli = nouveau_cli(file_priv);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
	struct nouveau_abi16_chan *chan;
	struct nouveau_client *client;
	struct nouveau_device *device;
	struct nouveau_instmem *imem;
	struct nouveau_fb *pfb;
	int ret;

	if (unlikely(!abi16))
	return -ENOMEM;
	client = nv_client(abi16->client);

	if (init->fb_ctxdma_handle == ~0 \|\| init->tt_ctxdma_handle == ~0)
	return nouveau_abi16_put(abi16, -EINVAL);

	device = nv_device(abi16->device);
	imem = nouveau_instmem(device);
	pfb = nouveau_fb(device);

	/* allocate "abi16 channel" data and make up a handle for it */
	init->channel = ffsll(~abi16->handles);
	if (!init->channel--)
	return nouveau_abi16_put(abi16, -ENOSPC);

	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
	if (!chan)
	return nouveau_abi16_put(abi16, -ENOMEM);

	INIT_LIST_HEAD(&chan->notifiers);
	list_add(&chan->head, &abi16->channels);
	abi16->handles \|= (1 << init->channel);

	/* create channel object and initialise dma and fence management */
	if (device->card_type >= NV_E0) {
	init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
	init->tt_ctxdma_handle = 0;
	}

	ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN \|
	init->channel, init->fb_ctxdma_handle,
	init->tt_ctxdma_handle, &chan->chan);
	if (ret)
	goto done;

	if (device->card_type >= NV_50)
	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM \|
	NOUVEAU_GEM_DOMAIN_GART;
	else
	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
	else
	init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;

	if (device->card_type < NV_C0) {
	init->subchan[0].handle = 0x00000000;
	init->subchan[0].grclass = 0x0000;
	init->subchan[1].handle = NvSw;
	init->subchan[1].grclass = 0x506e;
	init->nr_subchan = 2;
	}

	/* Named memory object area */
	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
	0, 0, &chan->ntfy);
	if (ret == 0)
	ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
	if (ret)
	goto done;

	if (device->card_type >= NV_50) {
	ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
	&chan->ntfy_vma);
	if (ret)
	goto done;
	}

	ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
	&init->notifier_handle);
	if (ret)
	goto done;

	ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
	done:
	if (ret)
	nouveau_abi16_chan_fini(abi16, chan);
	return nouveau_abi16_put(abi16, ret);
	}


	int
	nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
	{
	struct drm_nouveau_channel_free *req = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
	struct nouveau_abi16_chan *chan;
	int ret = -ENOENT;

	if (unlikely(!abi16))
	return -ENOMEM;

	list_for_each_entry(chan, &abi16->channels, head) {
	if (chan->chan->handle == (NVDRM_CHAN \| req->channel)) {
	nouveau_abi16_chan_fini(abi16, chan);
	return nouveau_abi16_put(abi16, 0);
	}
	}

	return nouveau_abi16_put(abi16, ret);
	}

	int
	nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
	{
	struct drm_nouveau_grobj_alloc *init = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_object *object;
	int ret;

	if (unlikely(!abi16))
	return -ENOMEM;

	if (init->handle == ~0)
	return nouveau_abi16_put(abi16, -EINVAL);

	/* compatibility with userspace that assumes 506e for all chipsets */
	if (init->class == 0x506e) {
	init->class = nouveau_abi16_swclass(drm);
	if (init->class == 0x906e)
	return nouveau_abi16_put(abi16, 0);
	}

	ret = nouveau_object_new(abi16->client, NVDRM_CHAN \| init->channel,
	init->handle, init->class, NULL, 0, &object);
	return nouveau_abi16_put(abi16, ret);
	}

	int
	nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
	{
	struct drm_nouveau_notifierobj_alloc *info = data;
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_device *device = nv_device(drm->device);
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
	struct nouveau_abi16_chan chan, temp;
	struct nouveau_abi16_ntfy *ntfy;
	struct nouveau_object *object;
	struct nv_dma_class args;
	int ret;

	if (unlikely(!abi16))
	return -ENOMEM;

	/* completely unnecessary for these chipsets... */
	if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
	return nouveau_abi16_put(abi16, -EINVAL);

	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
	if (chan->chan->handle == (NVDRM_CHAN \| info->channel))
	break;
	chan = NULL;
	}

	if (!chan)
	return nouveau_abi16_put(abi16, -ENOENT);

	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
	if (!ntfy)
	return nouveau_abi16_put(abi16, -ENOMEM);

	list_add(&ntfy->head, &chan->notifiers);
	ntfy->handle = info->handle;

	ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
	&ntfy->node);
	if (ret)
	goto done;

	args.start = ntfy->node->offset;
	args.limit = ntfy->node->offset + ntfy->node->length - 1;
	if (device->card_type >= NV_50) {
	args.flags = NV_DMA_TARGET_VM \| NV_DMA_ACCESS_VM;
	args.start += chan->ntfy_vma.offset;
	args.limit += chan->ntfy_vma.offset;
	} else
	if (drm->agp.stat == ENABLED) {
	args.flags = NV_DMA_TARGET_AGP \| NV_DMA_ACCESS_RDWR;
	args.start += drm->agp.base + chan->ntfy->bo.offset;
	args.limit += drm->agp.base + chan->ntfy->bo.offset;
	} else {
	args.flags = NV_DMA_TARGET_VM \| NV_DMA_ACCESS_RDWR;
	args.start += chan->ntfy->bo.offset;
	args.limit += chan->ntfy->bo.offset;
	}

	ret = nouveau_object_new(abi16->client, chan->chan->handle,
	ntfy->handle, 0x003d, &args,
	sizeof(args), &object);
	if (ret)
	goto done;

	done:
	if (ret)
	nouveau_abi16_ntfy_fini(chan, ntfy);
	return nouveau_abi16_put(abi16, ret);
	}

	int
	nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
	{
	struct drm_nouveau_gpuobj_free *fini = data;
	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
	struct nouveau_abi16_chan chan, temp;
	struct nouveau_abi16_ntfy *ntfy;
	int ret;

	if (unlikely(!abi16))
	return -ENOMEM;

	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
	if (chan->chan->handle == (NVDRM_CHAN \| fini->channel))
	break;
	chan = NULL;
	}

	if (!chan)
	return nouveau_abi16_put(abi16, -ENOENT);

	/* synchronize with the user channel and destroy the gpu object */
	nouveau_channel_idle(chan->chan);

	ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
	if (ret)
	return nouveau_abi16_put(abi16, ret);

	/* cleanup extra state if this object was a notifier */
	list_for_each_entry(ntfy, &chan->notifiers, head) {
	if (ntfy->handle == fini->handle) {
	nouveau_mm_free(&chan->heap, &ntfy->node);
	list_del(&ntfy->head);
	break;
	}
	}

	return nouveau_abi16_put(abi16, 0);
	}