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/ramht.h>
28 
29 struct nv04_instmem {
30 	struct nvkm_instmem base;
31 	struct nvkm_mm heap;
32 };
33 
34 /******************************************************************************
35  * instmem object implementation
36  *****************************************************************************/
37 #define nv04_instobj(p) container_of((p), struct nv04_instobj, base.memory)
38 
39 struct nv04_instobj {
40 	struct nvkm_instobj base;
41 	struct nv04_instmem *imem;
42 	struct nvkm_mm_node *node;
43 };
44 
45 static void
46 nv04_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
47 {
48 	struct nv04_instobj *iobj = nv04_instobj(memory);
49 	struct nvkm_device *device = iobj->imem->base.subdev.device;
50 	nvkm_wr32(device, 0x700000 + iobj->node->offset + offset, data);
51 }
52 
53 static u32
54 nv04_instobj_rd32(struct nvkm_memory *memory, u64 offset)
55 {
56 	struct nv04_instobj *iobj = nv04_instobj(memory);
57 	struct nvkm_device *device = iobj->imem->base.subdev.device;
58 	return nvkm_rd32(device, 0x700000 + iobj->node->offset + offset);
59 }
60 
61 static const struct nvkm_memory_ptrs
62 nv04_instobj_ptrs = {
63 	.rd32 = nv04_instobj_rd32,
64 	.wr32 = nv04_instobj_wr32,
65 };
66 
67 static void
68 nv04_instobj_release(struct nvkm_memory *memory)
69 {
70 }
71 
72 static void __iomem *
73 nv04_instobj_acquire(struct nvkm_memory *memory)
74 {
75 	struct nv04_instobj *iobj = nv04_instobj(memory);
76 	struct nvkm_device *device = iobj->imem->base.subdev.device;
77 	return device->pri + 0x700000 + iobj->node->offset;
78 }
79 
80 static u64
81 nv04_instobj_size(struct nvkm_memory *memory)
82 {
83 	return nv04_instobj(memory)->node->length;
84 }
85 
86 static u64
87 nv04_instobj_addr(struct nvkm_memory *memory)
88 {
89 	return nv04_instobj(memory)->node->offset;
90 }
91 
92 static enum nvkm_memory_target
93 nv04_instobj_target(struct nvkm_memory *memory)
94 {
95 	return NVKM_MEM_TARGET_INST;
96 }
97 
98 static void *
99 nv04_instobj_dtor(struct nvkm_memory *memory)
100 {
101 	struct nv04_instobj *iobj = nv04_instobj(memory);
102 	mutex_lock(&iobj->imem->base.subdev.mutex);
103 	nvkm_mm_free(&iobj->imem->heap, &iobj->node);
104 	mutex_unlock(&iobj->imem->base.subdev.mutex);
105 	nvkm_instobj_dtor(&iobj->imem->base, &iobj->base);
106 	return iobj;
107 }
108 
109 static const struct nvkm_memory_func
110 nv04_instobj_func = {
111 	.dtor = nv04_instobj_dtor,
112 	.target = nv04_instobj_target,
113 	.size = nv04_instobj_size,
114 	.addr = nv04_instobj_addr,
115 	.acquire = nv04_instobj_acquire,
116 	.release = nv04_instobj_release,
117 };
118 
119 static int
120 nv04_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero,
121 		 struct nvkm_memory **pmemory)
122 {
123 	struct nv04_instmem *imem = nv04_instmem(base);
124 	struct nv04_instobj *iobj;
125 	int ret;
126 
127 	if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL)))
128 		return -ENOMEM;
129 	*pmemory = &iobj->base.memory;
130 
131 	nvkm_instobj_ctor(&nv04_instobj_func, &imem->base, &iobj->base);
132 	iobj->base.memory.ptrs = &nv04_instobj_ptrs;
133 	iobj->imem = imem;
134 
135 	mutex_lock(&imem->base.subdev.mutex);
136 	ret = nvkm_mm_head(&imem->heap, 0, 1, size, size,
137 			   align ? align : 1, &iobj->node);
138 	mutex_unlock(&imem->base.subdev.mutex);
139 	return ret;
140 }
141 
142 /******************************************************************************
143  * instmem subdev implementation
144  *****************************************************************************/
145 
146 static u32
147 nv04_instmem_rd32(struct nvkm_instmem *imem, u32 addr)
148 {
149 	return nvkm_rd32(imem->subdev.device, 0x700000 + addr);
150 }
151 
152 static void
153 nv04_instmem_wr32(struct nvkm_instmem *imem, u32 addr, u32 data)
154 {
155 	nvkm_wr32(imem->subdev.device, 0x700000 + addr, data);
156 }
157 
158 static int
159 nv04_instmem_oneinit(struct nvkm_instmem *base)
160 {
161 	struct nv04_instmem *imem = nv04_instmem(base);
162 	struct nvkm_device *device = imem->base.subdev.device;
163 	int ret;
164 
165 	/* PRAMIN aperture maps over the end of VRAM, reserve it */
166 	imem->base.reserved = 512 * 1024;
167 
168 	ret = nvkm_mm_init(&imem->heap, 0, 0, imem->base.reserved, 1);
169 	if (ret)
170 		return ret;
171 
172 	/* 0x00000-0x10000: reserve for probable vbios image */
173 	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x10000, 0, false,
174 			      &imem->base.vbios);
175 	if (ret)
176 		return ret;
177 
178 	/* 0x10000-0x18000: reserve for RAMHT */
179 	ret = nvkm_ramht_new(device, 0x08000, 0, NULL, &imem->base.ramht);
180 	if (ret)
181 		return ret;
182 
183 	/* 0x18000-0x18800: reserve for RAMFC (enough for 32 nv30 channels) */
184 	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00800, 0, true,
185 			      &imem->base.ramfc);
186 	if (ret)
187 		return ret;
188 
189 	/* 0x18800-0x18a00: reserve for RAMRO */
190 	ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x00200, 0, false,
191 			      &imem->base.ramro);
192 	if (ret)
193 		return ret;
194 
195 	return 0;
196 }
197 
198 static void *
199 nv04_instmem_dtor(struct nvkm_instmem *base)
200 {
201 	struct nv04_instmem *imem = nv04_instmem(base);
202 	nvkm_memory_unref(&imem->base.ramfc);
203 	nvkm_memory_unref(&imem->base.ramro);
204 	nvkm_ramht_del(&imem->base.ramht);
205 	nvkm_memory_unref(&imem->base.vbios);
206 	nvkm_mm_fini(&imem->heap);
207 	return imem;
208 }
209 
210 static const struct nvkm_instmem_func
211 nv04_instmem = {
212 	.dtor = nv04_instmem_dtor,
213 	.oneinit = nv04_instmem_oneinit,
214 	.rd32 = nv04_instmem_rd32,
215 	.wr32 = nv04_instmem_wr32,
216 	.memory_new = nv04_instobj_new,
217 	.zero = false,
218 };
219 
220 int
221 nv04_instmem_new(struct nvkm_device *device, int index,
222 		 struct nvkm_instmem **pimem)
223 {
224 	struct nv04_instmem *imem;
225 
226 	if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL)))
227 		return -ENOMEM;
228 	nvkm_instmem_ctor(&nv04_instmem, device, index, &imem->base);
229 	*pimem = &imem->base;
230 	return 0;
231 }
232