[GitHub/exynos8895/android_kernel_samsung_universal8895.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;
	u64 size = mem->num_pages << 12;

	if (ttm->sg) {
		node->sg = ttm->sg;
		nouveau_vm_map_sg_table(&node->vma[0], 0, size, node);
	} else {
		node->pages = nvbe->ttm.dma_address;
		nouveau_vm_map_sg(&node->vma[0], 0, size, 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;
	} else
		node->pages = nvbe->ttm.dma_address;
	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)) {
		kfree(nvbe);
		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 BS	33	struct nouveau_mem *node = mem->mm_node;
3863c9bc BS	34	u64 size = mem->num_pages << 12;
6ee73861	35
3863c9bc BS	36	if (ttm->sg) {
	37	node->sg = ttm->sg;
	38	nouveau_vm_map_sg_table(&node->vma[0], 0, size, node);
	39	} else {
	40	node->pages = nvbe->ttm.dma_address;
	41	nouveau_vm_map_sg(&node->vma[0], 0, size, node);
6ee73861	42	}
6ee73861	43
3863c9bc	44	nvbe->node = node;
6ee73861 BS	45	return 0;
	46	}
	47
	48	static int
649bf3ca	49	nv04_sgdma_unbind(struct ttm_tt *ttm)
6ee73861	50	{
649bf3ca	51	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
3863c9bc	52	nouveau_vm_unmap(&nvbe->node->vma[0]);
6ee73861 BS	53	return 0;
	54	}
	55
efa58db3	56	static struct ttm_backend_func nv04_sgdma_backend = {
efa58db3 BS	57	.bind = nv04_sgdma_bind,
	58	.unbind = nv04_sgdma_unbind,
	59	.destroy = nouveau_sgdma_destroy
	60	};
6ee73861	61
b571fe21	62	static int
649bf3ca	63	nv50_sgdma_bind(struct ttm_tt ttm, struct ttm_mem_reg mem)
b571fe21	64	{
8e7e7052	65	struct nouveau_sgdma_be nvbe = (struct nouveau_sgdma_be )ttm;
26c0c9e3	66	struct nouveau_mem *node = mem->mm_node;
649bf3ca	67
26c0c9e3	68	/* noop: bound in move_notify() */
22b33e8e DA	69	if (ttm->sg) {
	70	node->sg = ttm->sg;
	71	} else
	72	node->pages = nvbe->ttm.dma_address;
b571fe21 BS	73	return 0;
	74	}
	75
	76	static int
649bf3ca	77	nv50_sgdma_unbind(struct ttm_tt *ttm)
b571fe21	78	{
26c0c9e3	79	/* noop: unbound in move_notify() */
b571fe21 BS	80	return 0;
	81	}
	82
b571fe21	83	static struct ttm_backend_func nv50_sgdma_backend = {
b571fe21 BS	84	.bind = nv50_sgdma_bind,
	85	.unbind = nv50_sgdma_unbind,
	86	.destroy = nouveau_sgdma_destroy
	87	};
	88
649bf3ca JG	89	struct ttm_tt *
	90	nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev,
	91	unsigned long size, uint32_t page_flags,
	92	struct page *dummy_read_page)
6ee73861	93	{
ebb945a9	94	struct nouveau_drm *drm = nouveau_bdev(bdev);
6ee73861 BS	95	struct nouveau_sgdma_be *nvbe;
6ee73861 BS	96
6ee73861 BS	97	nvbe = kzalloc(sizeof(*nvbe), GFP_KERNEL);
	98	if (!nvbe)
	99	return NULL;
	100
ebb945a9 BS	101	nvbe->dev = drm->dev;
	102	if (nv_device(drm->device)->card_type < NV_50)
	103	nvbe->ttm.ttm.func = &nv04_sgdma_backend;
	104	else
	105	nvbe->ttm.ttm.func = &nv50_sgdma_backend;
6ee73861	106
8e7e7052 JG	107	if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page)) {
8e7e7052 JG	108	kfree(nvbe);
649bf3ca JG	109	return NULL;
649bf3ca JG	110	}
8e7e7052	111	return &nvbe->ttm.ttm;
6ee73861	112	}