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#define nv04_instmem(p) container_of((p), struct nv04_instmem, base)
25#include "priv.h"
26
27#include <core/memory.h>
28#include <core/ramht.h>
29
30struct nv04_instmem {
31	struct nvkm_instmem base;
32	struct nvkm_mm heap;
33};
34
35/******************************************************************************
36 * instmem object implementation
37 *****************************************************************************/
38#define nv04_instobj(p) container_of((p), struct nv04_instobj, memory)
39
40struct nv04_instobj {
41	struct nvkm_memory memory;
42	struct nv04_instmem *imem;
43	struct nvkm_mm_node *node;
44};
45
46static enum nvkm_memory_target
47nv04_instobj_target(struct nvkm_memory *memory)
48{
49	return NVKM_MEM_TARGET_INST;
50}
51
52static u64
53nv04_instobj_addr(struct nvkm_memory *memory)
54{
55	return nv04_instobj(memory)->node->offset;
56}
57
58static u64
59nv04_instobj_size(struct nvkm_memory *memory)
60{
61	return nv04_instobj(memory)->node->length;
62}
63
64static void __iomem *
65nv04_instobj_acquire(struct nvkm_memory *memory)
66{
67	struct nv04_instobj *iobj = nv04_instobj(memory);
68	struct nvkm_device *device = iobj->imem->base.subdev.device;
69	return device->pri + 0x700000 + iobj->node->offset;
70}
71
72static void
73nv04_instobj_release(struct nvkm_memory *memory)
74{
75}
76
77static u32
78nv04_instobj_rd32(struct nvkm_memory *memory, u64 offset)
79{
80	struct nv04_instobj *iobj = nv04_instobj(memory);
81	struct nvkm_device *device = iobj->imem->base.subdev.device;
82	return nvkm_rd32(device, 0x700000 + iobj->node->offset + offset);
83}
84
85static void
86nv04_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
87{
88	struct nv04_instobj *iobj = nv04_instobj(memory);
89	struct nvkm_device *device = iobj->imem->base.subdev.device;
90	nvkm_wr32(device, 0x700000 + iobj->node->offset + offset, data);
91}
92
93static void *
94nv04_instobj_dtor(struct nvkm_memory *memory)
95{
96	struct nv04_instobj *iobj = nv04_instobj(memory);
97	mutex_lock(&iobj->imem->base.subdev.mutex);
98	nvkm_mm_free(&iobj->imem->heap, &iobj->node);
99	mutex_unlock(&iobj->imem->base.subdev.mutex);
100	return iobj;
101}
102
103static const struct nvkm_memory_func
104nv04_instobj_func = {
105	.dtor = nv04_instobj_dtor,
106	.target = nv04_instobj_target,
107	.size = nv04_instobj_size,
108	.addr = nv04_instobj_addr,
109	.acquire = nv04_instobj_acquire,
110	.release = nv04_instobj_release,
111	.rd32 = nv04_instobj_rd32,
112	.wr32 = nv04_instobj_wr32,
113};
114
115static int
116nv04_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero,
117		 struct nvkm_memory **pmemory)
118{
119	struct nv04_instmem *imem = nv04_instmem(base);
120	struct nv04_instobj *iobj;
121	int ret;
122
123	if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL)))
124		return -ENOMEM;
125	*pmemory = &iobj->memory;
126
127	nvkm_memory_ctor(&nv04_instobj_func, &iobj->memory);
128	iobj->imem = imem;
129
130	mutex_lock(&imem->base.subdev.mutex);
131	ret = nvkm_mm_head(&imem->heap, 0, 1, size, size,
132			   align ? align : 1, &iobj->node);
133	mutex_unlock(&imem->base.subdev.mutex);
134	return ret;
135}
136
137/******************************************************************************
138 * instmem subdev implementation
139 *****************************************************************************/
140
141static u32
142nv04_instmem_rd32(struct nvkm_instmem *imem, u32 addr)
143{
144	return nvkm_rd32(imem->subdev.device, 0x700000 + addr);
145}
146
147static void
148nv04_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data)
149{
150	nvkm_wr32(imem->subdev.device, 0x700000 + addr, data);
151}
152
153static int
154nv04_instmem_oneinit(struct nvkm_instmem *base)
155{
156	struct nv04_instmem *imem = nv04_instmem(base);
157	struct nvkm_device *device = imem->base.subdev.device;
158	int ret;
159
160	/* PRAMIN aperture maps over the end of VRAM, reserve it */
161	imem->base.reserved = 512 * 1024;
162
163	ret = nvkm_mm_init(&imem->heap, 0, imem->base.reserved, 1);
164	if (ret)
165		return ret;
166
167	/* 0x00000-0x10000: reserve for probable vbios image */
168	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x10000, 0, false,
169			      &imem->base.vbios);
170	if (ret)
171		return ret;
172
173	/* 0x10000-0x18000: reserve for RAMHT */
174	ret = nvkm_ramht_new(device, 0x08000, 0, NULL, &imem->base.ramht);
175	if (ret)
176		return ret;
177
178	/* 0x18000-0x18800: reserve for RAMFC (enough for 32 nv30 channels) */
179	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00800, 0, true,
180			      &imem->base.ramfc);
181	if (ret)
182		return ret;
183
184	/* 0x18800-0x18a00: reserve for RAMRO */
185	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00200, 0, false,
186			      &imem->base.ramro);
187	if (ret)
188		return ret;
189
190	return 0;
191}
192
193static void *
194nv04_instmem_dtor(struct nvkm_instmem *base)
195{
196	struct nv04_instmem *imem = nv04_instmem(base);
197	nvkm_memory_del(&imem->base.ramfc);
198	nvkm_memory_del(&imem->base.ramro);
199	nvkm_ramht_del(&imem->base.ramht);
200	nvkm_memory_del(&imem->base.vbios);
201	nvkm_mm_fini(&imem->heap);
202	return imem;
203}
204
205static const struct nvkm_instmem_func
206nv04_instmem = {
207	.dtor = nv04_instmem_dtor,
208	.oneinit = nv04_instmem_oneinit,
209	.rd32 = nv04_instmem_rd32,
210	.wr32 = nv04_instmem_wr32,
211	.memory_new = nv04_instobj_new,
212	.persistent = false,
213	.zero = false,
214};
215
216int
217nv04_instmem_new(struct nvkm_device *device, int index,
218		 struct nvkm_instmem **pimem)
219{
220	struct nv04_instmem *imem;
221
222	if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL)))
223		return -ENOMEM;
224	nvkm_instmem_ctor(&nv04_instmem, device, index, &imem->base);
225	*pimem = &imem->base;
226	return 0;
227}
228