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/client.h>
26 #include <core/enum.h>
27 #include <core/engctx.h>
28 #include <core/object.h>
29
30 #include <subdev/bios.h>
31
32 #include "nv50.h"
33
34 int
35 nv50_fb_memtype[0x80] = {
36 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
37 1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0,
38 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0,
39 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
40 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0,
41 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
42 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2,
43 1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
44 };
45
46 bool
nv50_fb_memtype_valid(struct nouveau_fb * pfb,u32 memtype)47 nv50_fb_memtype_valid(struct nouveau_fb *pfb, u32 memtype)
48 {
49 return nv50_fb_memtype[(memtype & 0xff00) >> 8] != 0;
50 }
51
52 static const struct nouveau_enum vm_dispatch_subclients[] = {
53 { 0x00000000, "GRCTX", NULL },
54 { 0x00000001, "NOTIFY", NULL },
55 { 0x00000002, "QUERY", NULL },
56 { 0x00000003, "COND", NULL },
57 { 0x00000004, "M2M_IN", NULL },
58 { 0x00000005, "M2M_OUT", NULL },
59 { 0x00000006, "M2M_NOTIFY", NULL },
60 {}
61 };
62
63 static const struct nouveau_enum vm_ccache_subclients[] = {
64 { 0x00000000, "CB", NULL },
65 { 0x00000001, "TIC", NULL },
66 { 0x00000002, "TSC", NULL },
67 {}
68 };
69
70 static const struct nouveau_enum vm_prop_subclients[] = {
71 { 0x00000000, "RT0", NULL },
72 { 0x00000001, "RT1", NULL },
73 { 0x00000002, "RT2", NULL },
74 { 0x00000003, "RT3", NULL },
75 { 0x00000004, "RT4", NULL },
76 { 0x00000005, "RT5", NULL },
77 { 0x00000006, "RT6", NULL },
78 { 0x00000007, "RT7", NULL },
79 { 0x00000008, "ZETA", NULL },
80 { 0x00000009, "LOCAL", NULL },
81 { 0x0000000a, "GLOBAL", NULL },
82 { 0x0000000b, "STACK", NULL },
83 { 0x0000000c, "DST2D", NULL },
84 {}
85 };
86
87 static const struct nouveau_enum vm_pfifo_subclients[] = {
88 { 0x00000000, "PUSHBUF", NULL },
89 { 0x00000001, "SEMAPHORE", NULL },
90 {}
91 };
92
93 static const struct nouveau_enum vm_bar_subclients[] = {
94 { 0x00000000, "FB", NULL },
95 { 0x00000001, "IN", NULL },
96 {}
97 };
98
99 static const struct nouveau_enum vm_client[] = {
100 { 0x00000000, "STRMOUT", NULL },
101 { 0x00000003, "DISPATCH", vm_dispatch_subclients },
102 { 0x00000004, "PFIFO_WRITE", NULL },
103 { 0x00000005, "CCACHE", vm_ccache_subclients },
104 { 0x00000006, "PPPP", NULL },
105 { 0x00000007, "CLIPID", NULL },
106 { 0x00000008, "PFIFO_READ", NULL },
107 { 0x00000009, "VFETCH", NULL },
108 { 0x0000000a, "TEXTURE", NULL },
109 { 0x0000000b, "PROP", vm_prop_subclients },
110 { 0x0000000c, "PVP", NULL },
111 { 0x0000000d, "PBSP", NULL },
112 { 0x0000000e, "PCRYPT", NULL },
113 { 0x0000000f, "PCOUNTER", NULL },
114 { 0x00000011, "PDAEMON", NULL },
115 {}
116 };
117
118 static const struct nouveau_enum vm_engine[] = {
119 { 0x00000000, "PGRAPH", NULL, NVDEV_ENGINE_GR },
120 { 0x00000001, "PVP", NULL, NVDEV_ENGINE_VP },
121 { 0x00000004, "PEEPHOLE", NULL },
122 { 0x00000005, "PFIFO", vm_pfifo_subclients, NVDEV_ENGINE_FIFO },
123 { 0x00000006, "BAR", vm_bar_subclients },
124 { 0x00000008, "PPPP", NULL, NVDEV_ENGINE_PPP },
125 { 0x00000008, "PMPEG", NULL, NVDEV_ENGINE_MPEG },
126 { 0x00000009, "PBSP", NULL, NVDEV_ENGINE_BSP },
127 { 0x0000000a, "PCRYPT", NULL, NVDEV_ENGINE_CRYPT },
128 { 0x0000000b, "PCOUNTER", NULL },
129 { 0x0000000c, "SEMAPHORE_BG", NULL },
130 { 0x0000000d, "PCOPY", NULL, NVDEV_ENGINE_COPY0 },
131 { 0x0000000e, "PDAEMON", NULL },
132 {}
133 };
134
135 static const struct nouveau_enum vm_fault[] = {
136 { 0x00000000, "PT_NOT_PRESENT", NULL },
137 { 0x00000001, "PT_TOO_SHORT", NULL },
138 { 0x00000002, "PAGE_NOT_PRESENT", NULL },
139 { 0x00000003, "PAGE_SYSTEM_ONLY", NULL },
140 { 0x00000004, "PAGE_READ_ONLY", NULL },
141 { 0x00000006, "NULL_DMAOBJ", NULL },
142 { 0x00000007, "WRONG_MEMTYPE", NULL },
143 { 0x0000000b, "VRAM_LIMIT", NULL },
144 { 0x0000000f, "DMAOBJ_LIMIT", NULL },
145 {}
146 };
147
148 static void
nv50_fb_intr(struct nouveau_subdev * subdev)149 nv50_fb_intr(struct nouveau_subdev *subdev)
150 {
151 struct nouveau_device *device = nv_device(subdev);
152 struct nouveau_engine *engine;
153 struct nv50_fb_priv *priv = (void *)subdev;
154 const struct nouveau_enum *en, *cl;
155 struct nouveau_object *engctx = NULL;
156 u32 trap[6], idx, chan;
157 u8 st0, st1, st2, st3;
158 int i;
159
160 idx = nv_rd32(priv, 0x100c90);
161 if (!(idx & 0x80000000))
162 return;
163 idx &= 0x00ffffff;
164
165 for (i = 0; i < 6; i++) {
166 nv_wr32(priv, 0x100c90, idx | i << 24);
167 trap[i] = nv_rd32(priv, 0x100c94);
168 }
169 nv_wr32(priv, 0x100c90, idx | 0x80000000);
170
171 /* decode status bits into something more useful */
172 if (device->chipset < 0xa3 ||
173 device->chipset == 0xaa || device->chipset == 0xac) {
174 st0 = (trap[0] & 0x0000000f) >> 0;
175 st1 = (trap[0] & 0x000000f0) >> 4;
176 st2 = (trap[0] & 0x00000f00) >> 8;
177 st3 = (trap[0] & 0x0000f000) >> 12;
178 } else {
179 st0 = (trap[0] & 0x000000ff) >> 0;
180 st1 = (trap[0] & 0x0000ff00) >> 8;
181 st2 = (trap[0] & 0x00ff0000) >> 16;
182 st3 = (trap[0] & 0xff000000) >> 24;
183 }
184 chan = (trap[2] << 16) | trap[1];
185
186 en = nouveau_enum_find(vm_engine, st0);
187
188 if (en && en->data2) {
189 const struct nouveau_enum *orig_en = en;
190 while (en->name && en->value == st0 && en->data2) {
191 engine = nouveau_engine(subdev, en->data2);
192 if (engine) {
193 engctx = nouveau_engctx_get(engine, chan);
194 if (engctx)
195 break;
196 }
197 en++;
198 }
199 if (!engctx)
200 en = orig_en;
201 }
202
203 nv_error(priv, "trapped %s at 0x%02x%04x%04x on channel 0x%08x [%s] ",
204 (trap[5] & 0x00000100) ? "read" : "write",
205 trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, chan,
206 nouveau_client_name(engctx));
207
208 nouveau_engctx_put(engctx);
209
210 if (en)
211 pr_cont("%s/", en->name);
212 else
213 pr_cont("%02x/", st0);
214
215 cl = nouveau_enum_find(vm_client, st2);
216 if (cl)
217 pr_cont("%s/", cl->name);
218 else
219 pr_cont("%02x/", st2);
220
221 if (cl && cl->data) cl = nouveau_enum_find(cl->data, st3);
222 else if (en && en->data) cl = nouveau_enum_find(en->data, st3);
223 else cl = NULL;
224 if (cl)
225 pr_cont("%s", cl->name);
226 else
227 pr_cont("%02x", st3);
228
229 pr_cont(" reason: ");
230 en = nouveau_enum_find(vm_fault, st1);
231 if (en)
232 pr_cont("%s\n", en->name);
233 else
234 pr_cont("0x%08x\n", st1);
235 }
236
237 int
nv50_fb_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)238 nv50_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
239 struct nouveau_oclass *oclass, void *data, u32 size,
240 struct nouveau_object **pobject)
241 {
242 struct nouveau_device *device = nv_device(parent);
243 struct nv50_fb_priv *priv;
244 int ret;
245
246 ret = nouveau_fb_create(parent, engine, oclass, &priv);
247 *pobject = nv_object(priv);
248 if (ret)
249 return ret;
250
251 priv->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
252 if (priv->r100c08_page) {
253 priv->r100c08 = dma_map_page(nv_device_base(device),
254 priv->r100c08_page, 0, PAGE_SIZE,
255 DMA_BIDIRECTIONAL);
256 if (dma_mapping_error(nv_device_base(device), priv->r100c08))
257 return -EFAULT;
258 } else {
259 nv_warn(priv, "failed 0x100c08 page alloc\n");
260 }
261
262 nv_subdev(priv)->intr = nv50_fb_intr;
263 return 0;
264 }
265
266 void
nv50_fb_dtor(struct nouveau_object * object)267 nv50_fb_dtor(struct nouveau_object *object)
268 {
269 struct nouveau_device *device = nv_device(object);
270 struct nv50_fb_priv *priv = (void *)object;
271
272 if (priv->r100c08_page) {
273 dma_unmap_page(nv_device_base(device), priv->r100c08, PAGE_SIZE,
274 DMA_BIDIRECTIONAL);
275 __free_page(priv->r100c08_page);
276 }
277
278 nouveau_fb_destroy(&priv->base);
279 }
280
281 int
nv50_fb_init(struct nouveau_object * object)282 nv50_fb_init(struct nouveau_object *object)
283 {
284 struct nv50_fb_impl *impl = (void *)object->oclass;
285 struct nv50_fb_priv *priv = (void *)object;
286 int ret;
287
288 ret = nouveau_fb_init(&priv->base);
289 if (ret)
290 return ret;
291
292 /* Not a clue what this is exactly. Without pointing it at a
293 * scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
294 * cause IOMMU "read from address 0" errors (rh#561267)
295 */
296 nv_wr32(priv, 0x100c08, priv->r100c08 >> 8);
297
298 /* This is needed to get meaningful information from 100c90
299 * on traps. No idea what these values mean exactly. */
300 nv_wr32(priv, 0x100c90, impl->trap);
301 return 0;
302 }
303
304 struct nouveau_oclass *
305 nv50_fb_oclass = &(struct nv50_fb_impl) {
306 .base.base.handle = NV_SUBDEV(FB, 0x50),
307 .base.base.ofuncs = &(struct nouveau_ofuncs) {
308 .ctor = nv50_fb_ctor,
309 .dtor = nv50_fb_dtor,
310 .init = nv50_fb_init,
311 .fini = _nouveau_fb_fini,
312 },
313 .base.memtype = nv50_fb_memtype_valid,
314 .base.ram = &nv50_ram_oclass,
315 .trap = 0x000707ff,
316 }.base.base;
317