[linux-2.6-block.git] / drivers / gpu / drm / nouveau / nouveau_sgdma.c

#include <linux/pagemap.h>
#include <linux/slab.h>

#include <subdev/fb.h>

#include "nouveau_drm.h"
#include "nouveau_ttm.h"

struct nouveau_sgdma_be {
	/* this has to be the first field so populate/unpopulated in
	 * nouve_bo.c works properly, otherwise have to move them here
	 */
	struct ttm_dma_tt ttm;
	struct drm_device *dev;
	struct nouveau_mem *node;
};

static void
nouveau_sgdma_destroy(struct ttm_tt *ttm)
{
	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;

	if (ttm) {
		ttm_dma_tt_fini(&nvbe->ttm);
		kfree(nvbe);
	}
}

static int
nv04_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
{
	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
	struct nouveau_mem *node = mem->mm_node;

	if (ttm->sg) {
		node->sg    = ttm->sg;
		node->pages = NULL;
	} else {
		node->sg    = NULL;
		node->pages = nvbe->ttm.dma_address;
	}
	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;

	nouveau_vm_map(&node->vma[0], node);
	nvbe->node = node;
	return 0;
}

static int
nv04_sgdma_unbind(struct ttm_tt *ttm)
{
	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
	nouveau_vm_unmap(&nvbe->node->vma[0]);
	return 0;
}

static struct ttm_backend_func nv04_sgdma_backend = {
	.bind			= nv04_sgdma_bind,
	.unbind			= nv04_sgdma_unbind,
	.destroy		= nouveau_sgdma_destroy
};

static int
nv50_sgdma_bind(struct ttm_tt *ttm, struct ttm_mem_reg *mem)
{
	struct nouveau_sgdma_be *nvbe = (struct nouveau_sgdma_be *)ttm;
	struct nouveau_mem *node = mem->mm_node;

	/* noop: bound in move_notify() */
	if (ttm->sg) {
		node->sg    = ttm->sg;
		node->pages = NULL;
	} else {
		node->sg    = NULL;
		node->pages = nvbe->ttm.dma_address;
	}
	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
	return 0;
}

static int
nv50_sgdma_unbind(struct ttm_tt *ttm)
{
	/* noop: unbound in move_notify() */
	return 0;
}

static struct ttm_backend_func nv50_sgdma_backend = {
	.bind			= nv50_sgdma_bind,
	.unbind			= nv50_sgdma_unbind,
	.destroy		= nouveau_sgdma_destroy
};

struct ttm_tt *
nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
			 unsigned long size, uint32_t page_flags,
			 struct page *dummy_read_page)
{
	struct nouveau_drm *drm = nouveau_bdev(bdev);
	struct nouveau_sgdma_be *nvbe;

	nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
	if (!nvbe)
		return NULL;

	nvbe->dev = drm->dev;
	if (nv_device(drm->device)->card_type < NV_50)
		nvbe->ttm.ttm.func = &nv04_sgdma_backend;
	else
		nvbe->ttm.ttm.func = &nv50_sgdma_backend;

	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
		return NULL;
	return &nvbe->ttm.ttm;
}
Commit	Line	Data
6ee73861	1	#include <linux/pagemap.h>
5a0e3ad6	2	#include <linux/slab.h>
6ee73861	3
ebb945a9 BS	4	#include <subdev/fb.h>
	5
	6	#include "nouveau_drm.h"
	7	#include "nouveau_ttm.h"
6ee73861 BS	8
6ee73861 BS	9	struct nouveau_sgdma_be {
8e7e7052 JG	10	/* this has to be the first field so populate/unpopulated in
	11	* nouve_bo.c works properly, otherwise have to move them here
	12	*/
	13	struct ttm_dma_tt ttm;
6ee73861	14	struct drm_device *dev;
3863c9bc	15	struct nouveau_mem *node;
6ee73861 BS	16	};
6ee73861 BS	17
efa58db3	18	static void
649bf3ca	19	nouveau_sgdma_destroy(struct ttm_tt *ttm)
efa58db3	20	{
649bf3ca	21	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
efa58db3	22
649bf3ca	23	if (ttm) {
8e7e7052	24	ttm_dma_tt_fini(&nvbe->ttm);
649bf3ca	25	kfree(nvbe);
efa58db3 BS	26	}
	27	}
	28
6ee73861	29	static int
649bf3ca	30	nv04_sgdma_bind(struct ttm_tt ttm, struct ttm_mem_reg mem)
6ee73861	31	{
649bf3ca	32	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
3863c9bc	33	struct nouveau_mem *node = mem->mm_node;
6ee73861	34
3863c9bc	35	if (ttm->sg) {
2e2cfbe6 BS	36	node->sg = ttm->sg;
2e2cfbe6 BS	37	node->pages = NULL;
3863c9bc	38	} else {
2e2cfbe6	39	node->sg = NULL;
3863c9bc	40	node->pages = nvbe->ttm.dma_address;
6ee73861	41	}
2e2cfbe6	42	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
6ee73861	43
2e2cfbe6	44	nouveau_vm_map(&node->vma[0], node);
3863c9bc	45	nvbe->node = node;
6ee73861 BS	46	return 0;
	47	}
	48
	49	static int
649bf3ca	50	nv04_sgdma_unbind(struct ttm_tt *ttm)
6ee73861	51	{
649bf3ca	52	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
3863c9bc	53	nouveau_vm_unmap(&nvbe->node->vma[0]);
6ee73861 BS	54	return 0;
	55	}
	56
efa58db3	57	static struct ttm_backend_func nv04_sgdma_backend = {
efa58db3 BS	58	.bind = nv04_sgdma_bind,
	59	.unbind = nv04_sgdma_unbind,
	60	.destroy = nouveau_sgdma_destroy
	61	};
6ee73861	62
b571fe21	63	static int
649bf3ca	64	nv50_sgdma_bind(struct ttm_tt ttm, struct ttm_mem_reg mem)
b571fe21	65	{
8e7e7052	66	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
26c0c9e3	67	struct nouveau_mem *node = mem->mm_node;
649bf3ca	68
26c0c9e3	69	/* noop: bound in move_notify() */
22b33e8e	70	if (ttm->sg) {
2e2cfbe6 BS	71	node->sg = ttm->sg;
	72	node->pages = NULL;
	73	} else {
	74	node->sg = NULL;
22b33e8e	75	node->pages = nvbe->ttm.dma_address;
2e2cfbe6 BS	76	}
2e2cfbe6 BS	77	node->size = (mem->num_pages << PAGE_SHIFT) >> 12;
b571fe21 BS	78	return 0;
	79	}
	80
	81	static int
649bf3ca	82	nv50_sgdma_unbind(struct ttm_tt *ttm)
b571fe21	83	{
26c0c9e3	84	/* noop: unbound in move_notify() */
b571fe21 BS	85	return 0;
	86	}
	87
b571fe21	88	static struct ttm_backend_func nv50_sgdma_backend = {
b571fe21 BS	89	.bind = nv50_sgdma_bind,
	90	.unbind = nv50_sgdma_unbind,
	91	.destroy = nouveau_sgdma_destroy
	92	};
	93
649bf3ca JG	94	struct ttm_tt *
	95	nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
	96	unsigned long size, uint32_t page_flags,
	97	struct page *dummy_read_page)
6ee73861	98	{
ebb945a9	99	struct nouveau_drm *drm = nouveau_bdev(bdev);
6ee73861 BS	100	struct nouveau_sgdma_be *nvbe;
6ee73861 BS	101
6ee73861 BS	102	nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
	103	if (!nvbe)
	104	return NULL;
	105
ebb945a9 BS	106	nvbe->dev = drm->dev;
	107	if (nv_device(drm->device)->card_type < NV_50)
	108	nvbe->ttm.ttm.func = &nv04_sgdma_backend;
	109	else
	110	nvbe->ttm.ttm.func = &nv50_sgdma_backend;
6ee73861	111
7a59cc34	112	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page))
649bf3ca	113	return NULL;
8e7e7052	114	return &nvbe->ttm.ttm;
6ee73861	115	}