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 #include "nv50.h"
25 #include "ram.h"
26
27 #include <core/client.h>
28 #include <core/enum.h>
29 #include <engine/fifo.h>
30
31 static int
nv50_fb_ram_new(struct nvkm_fb * base,struct nvkm_ram ** pram)32 nv50_fb_ram_new(struct nvkm_fb *base, struct nvkm_ram **pram)
33 {
34 struct nv50_fb *fb = nv50_fb(base);
35 return fb->func->ram_new(&fb->base, pram);
36 }
37
38 static const struct nvkm_enum vm_dispatch_subclients[] = {
39 { 0x00000000, "GRCTX" },
40 { 0x00000001, "NOTIFY" },
41 { 0x00000002, "QUERY" },
42 { 0x00000003, "COND" },
43 { 0x00000004, "M2M_IN" },
44 { 0x00000005, "M2M_OUT" },
45 { 0x00000006, "M2M_NOTIFY" },
46 {}
47 };
48
49 static const struct nvkm_enum vm_ccache_subclients[] = {
50 { 0x00000000, "CB" },
51 { 0x00000001, "TIC" },
52 { 0x00000002, "TSC" },
53 {}
54 };
55
56 static const struct nvkm_enum vm_prop_subclients[] = {
57 { 0x00000000, "RT0" },
58 { 0x00000001, "RT1" },
59 { 0x00000002, "RT2" },
60 { 0x00000003, "RT3" },
61 { 0x00000004, "RT4" },
62 { 0x00000005, "RT5" },
63 { 0x00000006, "RT6" },
64 { 0x00000007, "RT7" },
65 { 0x00000008, "ZETA" },
66 { 0x00000009, "LOCAL" },
67 { 0x0000000a, "GLOBAL" },
68 { 0x0000000b, "STACK" },
69 { 0x0000000c, "DST2D" },
70 {}
71 };
72
73 static const struct nvkm_enum vm_pfifo_subclients[] = {
74 { 0x00000000, "PUSHBUF" },
75 { 0x00000001, "SEMAPHORE" },
76 {}
77 };
78
79 static const struct nvkm_enum vm_bar_subclients[] = {
80 { 0x00000000, "FB" },
81 { 0x00000001, "IN" },
82 {}
83 };
84
85 static const struct nvkm_enum vm_client[] = {
86 { 0x00000000, "STRMOUT" },
87 { 0x00000003, "DISPATCH", vm_dispatch_subclients },
88 { 0x00000004, "PFIFO_WRITE" },
89 { 0x00000005, "CCACHE", vm_ccache_subclients },
90 { 0x00000006, "PMSPPP" },
91 { 0x00000007, "CLIPID" },
92 { 0x00000008, "PFIFO_READ" },
93 { 0x00000009, "VFETCH" },
94 { 0x0000000a, "TEXTURE" },
95 { 0x0000000b, "PROP", vm_prop_subclients },
96 { 0x0000000c, "PVP" },
97 { 0x0000000d, "PBSP" },
98 { 0x0000000e, "PCRYPT" },
99 { 0x0000000f, "PCOUNTER" },
100 { 0x00000011, "PDAEMON" },
101 {}
102 };
103
104 static const struct nvkm_enum vm_engine[] = {
105 { 0x00000000, "PGRAPH" },
106 { 0x00000001, "PVP" },
107 { 0x00000004, "PEEPHOLE" },
108 { 0x00000005, "PFIFO", vm_pfifo_subclients },
109 { 0x00000006, "BAR", vm_bar_subclients },
110 { 0x00000008, "PMSPPP" },
111 { 0x00000008, "PMPEG" },
112 { 0x00000009, "PBSP" },
113 { 0x0000000a, "PCRYPT" },
114 { 0x0000000b, "PCOUNTER" },
115 { 0x0000000c, "SEMAPHORE_BG" },
116 { 0x0000000d, "PCE0" },
117 { 0x0000000e, "PMU" },
118 {}
119 };
120
121 static const struct nvkm_enum vm_fault[] = {
122 { 0x00000000, "PT_NOT_PRESENT" },
123 { 0x00000001, "PT_TOO_SHORT" },
124 { 0x00000002, "PAGE_NOT_PRESENT" },
125 { 0x00000003, "PAGE_SYSTEM_ONLY" },
126 { 0x00000004, "PAGE_READ_ONLY" },
127 { 0x00000006, "NULL_DMAOBJ" },
128 { 0x00000007, "WRONG_MEMTYPE" },
129 { 0x0000000b, "VRAM_LIMIT" },
130 { 0x0000000f, "DMAOBJ_LIMIT" },
131 {}
132 };
133
134 static void
nv50_fb_intr(struct nvkm_fb * base)135 nv50_fb_intr(struct nvkm_fb *base)
136 {
137 struct nv50_fb *fb = nv50_fb(base);
138 struct nvkm_subdev *subdev = &fb->base.subdev;
139 struct nvkm_device *device = subdev->device;
140 struct nvkm_fifo *fifo = device->fifo;
141 struct nvkm_fifo_chan *chan;
142 const struct nvkm_enum *en, *re, *cl, *sc;
143 u32 trap[6], idx, inst;
144 u8 st0, st1, st2, st3;
145 unsigned long flags;
146 int i;
147
148 idx = nvkm_rd32(device, 0x100c90);
149 if (!(idx & 0x80000000))
150 return;
151 idx &= 0x00ffffff;
152
153 for (i = 0; i < 6; i++) {
154 nvkm_wr32(device, 0x100c90, idx | i << 24);
155 trap[i] = nvkm_rd32(device, 0x100c94);
156 }
157 nvkm_wr32(device, 0x100c90, idx | 0x80000000);
158
159 /* decode status bits into something more useful */
160 if (device->chipset < 0xa3 ||
161 device->chipset == 0xaa || device->chipset == 0xac) {
162 st0 = (trap[0] & 0x0000000f) >> 0;
163 st1 = (trap[0] & 0x000000f0) >> 4;
164 st2 = (trap[0] & 0x00000f00) >> 8;
165 st3 = (trap[0] & 0x0000f000) >> 12;
166 } else {
167 st0 = (trap[0] & 0x000000ff) >> 0;
168 st1 = (trap[0] & 0x0000ff00) >> 8;
169 st2 = (trap[0] & 0x00ff0000) >> 16;
170 st3 = (trap[0] & 0xff000000) >> 24;
171 }
172 inst = ((trap[2] << 16) | trap[1]) << 12;
173
174 en = nvkm_enum_find(vm_engine, st0);
175 re = nvkm_enum_find(vm_fault , st1);
176 cl = nvkm_enum_find(vm_client, st2);
177 if (cl && cl->data) sc = nvkm_enum_find(cl->data, st3);
178 else if (en && en->data) sc = nvkm_enum_find(en->data, st3);
179 else sc = NULL;
180
181 chan = nvkm_fifo_chan_inst(fifo, inst, &flags);
182 nvkm_error(subdev, "trapped %s at %02x%04x%04x on channel %d [%08x %s] "
183 "engine %02x [%s] client %02x [%s] "
184 "subclient %02x [%s] reason %08x [%s]\n",
185 (trap[5] & 0x00000100) ? "read" : "write",
186 trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff,
187 chan ? chan->chid : -1, inst,
188 chan ? chan->object.client->name : "unknown",
189 st0, en ? en->name : "",
190 st2, cl ? cl->name : "", st3, sc ? sc->name : "",
191 st1, re ? re->name : "");
192 nvkm_fifo_chan_put(fifo, flags, &chan);
193 }
194
195 static int
nv50_fb_oneinit(struct nvkm_fb * base)196 nv50_fb_oneinit(struct nvkm_fb *base)
197 {
198 struct nv50_fb *fb = nv50_fb(base);
199 struct nvkm_device *device = fb->base.subdev.device;
200
201 fb->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
202 if (fb->r100c08_page) {
203 fb->r100c08 = dma_map_page(device->dev, fb->r100c08_page, 0,
204 PAGE_SIZE, DMA_BIDIRECTIONAL);
205 if (dma_mapping_error(device->dev, fb->r100c08))
206 return -EFAULT;
207 }
208
209 return 0;
210 }
211
212 static void
nv50_fb_init(struct nvkm_fb * base)213 nv50_fb_init(struct nvkm_fb *base)
214 {
215 struct nv50_fb *fb = nv50_fb(base);
216 struct nvkm_device *device = fb->base.subdev.device;
217
218 /* Not a clue what this is exactly. Without pointing it at a
219 * scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
220 * cause IOMMU "read from address 0" errors (rh#561267)
221 */
222 nvkm_wr32(device, 0x100c08, fb->r100c08 >> 8);
223
224 /* This is needed to get meaningful information from 100c90
225 * on traps. No idea what these values mean exactly. */
226 nvkm_wr32(device, 0x100c90, fb->func->trap);
227 }
228
229 static u32
nv50_fb_tags(struct nvkm_fb * base)230 nv50_fb_tags(struct nvkm_fb *base)
231 {
232 struct nv50_fb *fb = nv50_fb(base);
233 if (fb->func->tags)
234 return fb->func->tags(&fb->base);
235 return 0;
236 }
237
238 static void *
nv50_fb_dtor(struct nvkm_fb * base)239 nv50_fb_dtor(struct nvkm_fb *base)
240 {
241 struct nv50_fb *fb = nv50_fb(base);
242 struct nvkm_device *device = fb->base.subdev.device;
243
244 if (fb->r100c08_page) {
245 dma_unmap_page(device->dev, fb->r100c08, PAGE_SIZE,
246 DMA_BIDIRECTIONAL);
247 __free_page(fb->r100c08_page);
248 }
249
250 return fb;
251 }
252
253 static const struct nvkm_fb_func
254 nv50_fb_ = {
255 .dtor = nv50_fb_dtor,
256 .tags = nv50_fb_tags,
257 .oneinit = nv50_fb_oneinit,
258 .init = nv50_fb_init,
259 .intr = nv50_fb_intr,
260 .ram_new = nv50_fb_ram_new,
261 };
262
263 int
nv50_fb_new_(const struct nv50_fb_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fb ** pfb)264 nv50_fb_new_(const struct nv50_fb_func *func, struct nvkm_device *device,
265 enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
266 {
267 struct nv50_fb *fb;
268
269 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
270 return -ENOMEM;
271 nvkm_fb_ctor(&nv50_fb_, device, type, inst, &fb->base);
272 fb->func = func;
273 *pfb = &fb->base;
274 return 0;
275 }
276
277 static const struct nv50_fb_func
278 nv50_fb = {
279 .ram_new = nv50_ram_new,
280 .tags = nv20_fb_tags,
281 .trap = 0x000707ff,
282 };
283
284 int
nv50_fb_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fb ** pfb)285 nv50_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
286 {
287 return nv50_fb_new_(&nv50_fb, device, type, inst, pfb);
288 }
289