[linux-2.6-block.git] / drivers / gpu / drm / nouveau / core / subdev / bar / base.c

/*
 * 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.
 *
 * Authors: Ben Skeggs
 */

#include <core/object.h>

#include <subdev/fb.h>
#include <subdev/vm.h>

#include "priv.h"

struct nouveau_barobj {
	struct nouveau_object base;
	struct nouveau_vma vma;
	void __iomem *iomem;
};

static int
nouveau_barobj_ctor(struct nouveau_object *parent,
		    struct nouveau_object *engine,
		    struct nouveau_oclass *oclass, void *mem, u32 size,
		    struct nouveau_object **pobject)
{
	struct nouveau_bar *bar = (void *)engine;
	struct nouveau_barobj *barobj;
	int ret;

	ret = nouveau_object_create(parent, engine, oclass, 0, &barobj);
	*pobject = nv_object(barobj);
	if (ret)
		return ret;

	ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma);
	if (ret)
		return ret;

	barobj->iomem = bar->iomem + (u32)barobj->vma.offset;
	return 0;
}

static void
nouveau_barobj_dtor(struct nouveau_object *object)
{
	struct nouveau_bar *bar = (void *)object->engine;
	struct nouveau_barobj *barobj = (void *)object;
	if (barobj->vma.node)
		bar->unmap(bar, &barobj->vma);
	nouveau_object_destroy(&barobj->base);
}

static u32
nouveau_barobj_rd32(struct nouveau_object *object, u64 addr)
{
	struct nouveau_barobj *barobj = (void *)object;
	return ioread32_native(barobj->iomem + addr);
}

static void
nouveau_barobj_wr32(struct nouveau_object *object, u64 addr, u32 data)
{
	struct nouveau_barobj *barobj = (void *)object;
	iowrite32_native(data, barobj->iomem + addr);
}

static struct nouveau_oclass
nouveau_barobj_oclass = {
	.ofuncs = &(struct nouveau_ofuncs) {
		.ctor = nouveau_barobj_ctor,
		.dtor = nouveau_barobj_dtor,
		.init = nouveau_object_init,
		.fini = nouveau_object_fini,
		.rd32 = nouveau_barobj_rd32,
		.wr32 = nouveau_barobj_wr32,
	},
};

int
nouveau_bar_alloc(struct nouveau_bar *bar, struct nouveau_object *parent,
		  struct nouveau_mem *mem, struct nouveau_object **pobject)
{
	struct nouveau_object *engine = nv_object(bar);
	return nouveau_object_ctor(parent, engine, &nouveau_barobj_oclass,
				   mem, 0, pobject);
}

int
nouveau_bar_create_(struct nouveau_object *parent,
		    struct nouveau_object *engine,
		    struct nouveau_oclass *oclass, int length, void **pobject)
{
	struct nouveau_device *device = nv_device(parent);
	struct nouveau_bar *bar;
	int ret;

	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "BARCTL",
				     "bar", length, pobject);
	bar = *pobject;
	if (ret)
		return ret;

	bar->iomem = ioremap(nv_device_resource_start(device, 3),
			     nv_device_resource_len(device, 3));
	return 0;
}

void
nouveau_bar_destroy(struct nouveau_bar *bar)
{
	if (bar->iomem)
		iounmap(bar->iomem);
	nouveau_subdev_destroy(&bar->base);
}

void
_nouveau_bar_dtor(struct nouveau_object *object)
{
	struct nouveau_bar *bar = (void *)object;
	nouveau_bar_destroy(bar);
}
Commit	Line	Data
3863c9bc BS	1	/*
	2	* Copyright 2012 Red Hat Inc.
	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 shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs
	23	*/
	24
	25	#include <core/object.h>
52225551 BS	26
	27	#include <subdev/fb.h>
	28	#include <subdev/vm.h>
	29
	30	#include "priv.h"
3863c9bc BS	31
	32	struct nouveau_barobj {
	33	struct nouveau_object base;
	34	struct nouveau_vma vma;
	35	void __iomem *iomem;
	36	};
	37
	38	static int
	39	nouveau_barobj_ctor(struct nouveau_object *parent,
	40	struct nouveau_object *engine,
	41	struct nouveau_oclass oclass, void mem, u32 size,
	42	struct nouveau_object **pobject)
	43	{
	44	struct nouveau_bar bar = (void )engine;
	45	struct nouveau_barobj *barobj;
	46	int ret;
	47
	48	ret = nouveau_object_create(parent, engine, oclass, 0, &barobj);
	49	*pobject = nv_object(barobj);
	50	if (ret)
	51	return ret;
	52
	53	ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma);
	54	if (ret)
	55	return ret;
	56
	57	barobj->iomem = bar->iomem + (u32)barobj->vma.offset;
	58	return 0;
	59	}
	60
	61	static void
	62	nouveau_barobj_dtor(struct nouveau_object *object)
	63	{
	64	struct nouveau_bar bar = (void )object->engine;
	65	struct nouveau_barobj barobj = (void )object;
	66	if (barobj->vma.node)
	67	bar->unmap(bar, &barobj->vma);
	68	nouveau_object_destroy(&barobj->base);
	69	}
	70
	71	static u32
0a32241d	72	nouveau_barobj_rd32(struct nouveau_object *object, u64 addr)
3863c9bc BS	73	{
	74	struct nouveau_barobj barobj = (void )object;
	75	return ioread32_native(barobj->iomem + addr);
	76	}
	77
	78	static void
0a32241d	79	nouveau_barobj_wr32(struct nouveau_object *object, u64 addr, u32 data)
3863c9bc BS	80	{
	81	struct nouveau_barobj barobj = (void )object;
	82	iowrite32_native(data, barobj->iomem + addr);
	83	}
	84
	85	static struct nouveau_oclass
	86	nouveau_barobj_oclass = {
	87	.ofuncs = &(struct nouveau_ofuncs) {
	88	.ctor = nouveau_barobj_ctor,
	89	.dtor = nouveau_barobj_dtor,
	90	.init = nouveau_object_init,
	91	.fini = nouveau_object_fini,
	92	.rd32 = nouveau_barobj_rd32,
	93	.wr32 = nouveau_barobj_wr32,
	94	},
	95	};
	96
	97	int
	98	nouveau_bar_alloc(struct nouveau_bar bar, struct nouveau_object parent,
	99	struct nouveau_mem mem, struct nouveau_object *pobject)
	100	{
	101	struct nouveau_object *engine = nv_object(bar);
	102	return nouveau_object_ctor(parent, engine, &nouveau_barobj_oclass,
	103	mem, 0, pobject);
	104	}
	105
	106	int
	107	nouveau_bar_create_(struct nouveau_object *parent,
	108	struct nouveau_object *engine,
	109	struct nouveau_oclass oclass, int length, void *pobject)
	110	{
	111	struct nouveau_device *device = nv_device(parent);
	112	struct nouveau_bar *bar;
	113	int ret;
	114
	115	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "BARCTL",
	116	"bar", length, pobject);
	117	bar = *pobject;
	118	if (ret)
	119	return ret;
	120
420b9469 AC	121	bar->iomem = ioremap(nv_device_resource_start(device, 3),
420b9469 AC	122	nv_device_resource_len(device, 3));
3863c9bc BS	123	return 0;
	124	}
	125
	126	void
	127	nouveau_bar_destroy(struct nouveau_bar *bar)
	128	{
	129	if (bar->iomem)
	130	iounmap(bar->iomem);
	131	nouveau_subdev_destroy(&bar->base);
	132	}
	133
	134	void
	135	_nouveau_bar_dtor(struct nouveau_object *object)
	136	{
	137	struct nouveau_bar bar = (void )object;
	138	nouveau_bar_destroy(bar);
	139	}