[deliverable/linux.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 *data, u32 size,
		    struct nouveau_object **pobject)
{
	struct nouveau_device *device = nv_device(parent);
	struct nouveau_bar *bar = nouveau_bar(device);
	struct nouveau_mem *mem = data;
	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 = ioremap(nv_device_resource_start(device, 3) +
				(u32)barobj->vma.offset, mem->size << 12);
	if (!barobj->iomem) {
		nv_warn(bar, "PRAMIN ioremap failed\n");
		return -ENOMEM;
	}

	return 0;
}

static void
nouveau_barobj_dtor(struct nouveau_object *object)
{
	struct nouveau_bar *bar = nouveau_bar(object);
	struct nouveau_barobj *barobj = (void *)object;
	if (barobj->vma.node) {
		if (barobj->iomem)
			iounmap(barobj->iomem);
		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 *gpuobj;
	int ret = nouveau_object_ctor(parent, &parent->engine->subdev.object,
				      &nouveau_barobj_oclass,
				      mem, 0, &gpuobj);
	if (ret == 0)
		*pobject = gpuobj;
	return ret;
}

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

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

	return 0;
}

void
nouveau_bar_destroy(struct nouveau_bar *bar)
{
	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,
e94654e2	41	struct nouveau_oclass oclass, void data, u32 size,
3863c9bc BS	42	struct nouveau_object **pobject)
3863c9bc BS	43	{
e94654e2	44	struct nouveau_device *device = nv_device(parent);
c272d86e	45	struct nouveau_bar *bar = nouveau_bar(device);
e94654e2	46	struct nouveau_mem *mem = data;
3863c9bc BS	47	struct nouveau_barobj *barobj;
	48	int ret;
	49
	50	ret = nouveau_object_create(parent, engine, oclass, 0, &barobj);
	51	*pobject = nv_object(barobj);
	52	if (ret)
	53	return ret;
	54
	55	ret = bar->kmap(bar, mem, NV_MEM_ACCESS_RW, &barobj->vma);
	56	if (ret)
	57	return ret;
	58
e94654e2 BS	59	barobj->iomem = ioremap(nv_device_resource_start(device, 3) +
	60	(u32)barobj->vma.offset, mem->size << 12);
	61	if (!barobj->iomem) {
	62	nv_warn(bar, "PRAMIN ioremap failed\n");
	63	return -ENOMEM;
	64	}
	65
3863c9bc BS	66	return 0;
	67	}
	68
	69	static void
	70	nouveau_barobj_dtor(struct nouveau_object *object)
	71	{
c272d86e	72	struct nouveau_bar *bar = nouveau_bar(object);
3863c9bc	73	struct nouveau_barobj barobj = (void )object;
e94654e2 BS	74	if (barobj->vma.node) {
	75	if (barobj->iomem)
	76	iounmap(barobj->iomem);
3863c9bc	77	bar->unmap(bar, &barobj->vma);
e94654e2	78	}
3863c9bc BS	79	nouveau_object_destroy(&barobj->base);
	80	}
	81
	82	static u32
0a32241d	83	nouveau_barobj_rd32(struct nouveau_object *object, u64 addr)
3863c9bc BS	84	{
	85	struct nouveau_barobj barobj = (void )object;
	86	return ioread32_native(barobj->iomem + addr);
	87	}
	88
	89	static void
0a32241d	90	nouveau_barobj_wr32(struct nouveau_object *object, u64 addr, u32 data)
3863c9bc BS	91	{
	92	struct nouveau_barobj barobj = (void )object;
	93	iowrite32_native(data, barobj->iomem + addr);
	94	}
	95
	96	static struct nouveau_oclass
	97	nouveau_barobj_oclass = {
	98	.ofuncs = &(struct nouveau_ofuncs) {
	99	.ctor = nouveau_barobj_ctor,
	100	.dtor = nouveau_barobj_dtor,
	101	.init = nouveau_object_init,
	102	.fini = nouveau_object_fini,
	103	.rd32 = nouveau_barobj_rd32,
	104	.wr32 = nouveau_barobj_wr32,
	105	},
	106	};
	107
	108	int
	109	nouveau_bar_alloc(struct nouveau_bar bar, struct nouveau_object parent,
	110	struct nouveau_mem mem, struct nouveau_object *pobject)
	111	{
e94654e2	112	struct nouveau_object *gpuobj;
ec0e5542	113	int ret = nouveau_object_ctor(parent, &parent->engine->subdev.object,
c272d86e	114	&nouveau_barobj_oclass,
e94654e2 BS	115	mem, 0, &gpuobj);
	116	if (ret == 0)
	117	*pobject = gpuobj;
e7d96929	118	return ret;
3863c9bc BS	119	}
	120
	121	int
	122	nouveau_bar_create_(struct nouveau_object *parent,
	123	struct nouveau_object *engine,
	124	struct nouveau_oclass oclass, int length, void *pobject)
	125	{
3863c9bc BS	126	struct nouveau_bar *bar;
	127	int ret;
	128
	129	ret = nouveau_subdev_create_(parent, engine, oclass, 0, "BARCTL",
	130	"bar", length, pobject);
	131	bar = *pobject;
	132	if (ret)
	133	return ret;
	134
3863c9bc BS	135	return 0;
	136	}
	137
	138	void
	139	nouveau_bar_destroy(struct nouveau_bar *bar)
	140	{
3863c9bc BS	141	nouveau_subdev_destroy(&bar->base);
	142	}
	143
	144	void
	145	_nouveau_bar_dtor(struct nouveau_object *object)
	146	{
	147	struct nouveau_bar bar = (void )object;
	148	nouveau_bar_destroy(bar);
	149	}