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 "head.h"
26 #include "ior.h"
27 #include "channv50.h"
28 #include "rootnv50.h"
29
30 #include <core/ramht.h>
31 #include <subdev/timer.h>
32
33 void
gf119_disp_super(struct work_struct * work)34 gf119_disp_super(struct work_struct *work)
35 {
36 struct nv50_disp *disp =
37 container_of(work, struct nv50_disp, supervisor);
38 struct nvkm_subdev *subdev = &disp->base.engine.subdev;
39 struct nvkm_device *device = subdev->device;
40 struct nvkm_head *head;
41 u32 mask[4];
42
43 nvkm_debug(subdev, "supervisor %d\n", ffs(disp->super));
44 list_for_each_entry(head, &disp->base.head, head) {
45 mask[head->id] = nvkm_rd32(device, 0x6101d4 + (head->id * 0x800));
46 HEAD_DBG(head, "%08x", mask[head->id]);
47 }
48
49 if (disp->super & 0x00000001) {
50 nv50_disp_chan_mthd(disp->chan[0], NV_DBG_DEBUG);
51 nv50_disp_super_1(disp);
52 list_for_each_entry(head, &disp->base.head, head) {
53 if (!(mask[head->id] & 0x00001000))
54 continue;
55 nv50_disp_super_1_0(disp, head);
56 }
57 } else
58 if (disp->super & 0x00000002) {
59 list_for_each_entry(head, &disp->base.head, head) {
60 if (!(mask[head->id] & 0x00001000))
61 continue;
62 nv50_disp_super_2_0(disp, head);
63 }
64 nvkm_outp_route(&disp->base);
65 list_for_each_entry(head, &disp->base.head, head) {
66 if (!(mask[head->id] & 0x00010000))
67 continue;
68 nv50_disp_super_2_1(disp, head);
69 }
70 list_for_each_entry(head, &disp->base.head, head) {
71 if (!(mask[head->id] & 0x00001000))
72 continue;
73 nv50_disp_super_2_2(disp, head);
74 }
75 } else
76 if (disp->super & 0x00000004) {
77 list_for_each_entry(head, &disp->base.head, head) {
78 if (!(mask[head->id] & 0x00001000))
79 continue;
80 nv50_disp_super_3_0(disp, head);
81 }
82 }
83
84 list_for_each_entry(head, &disp->base.head, head)
85 nvkm_wr32(device, 0x6101d4 + (head->id * 0x800), 0x00000000);
86 nvkm_wr32(device, 0x6101d0, 0x80000000);
87 }
88
89 void
gf119_disp_intr_error(struct nv50_disp * disp,int chid)90 gf119_disp_intr_error(struct nv50_disp *disp, int chid)
91 {
92 struct nvkm_subdev *subdev = &disp->base.engine.subdev;
93 struct nvkm_device *device = subdev->device;
94 u32 stat = nvkm_rd32(device, 0x6101f0 + (chid * 12));
95 u32 type = (stat & 0x00007000) >> 12;
96 u32 mthd = (stat & 0x00000ffc);
97 u32 data = nvkm_rd32(device, 0x6101f4 + (chid * 12));
98 u32 code = nvkm_rd32(device, 0x6101f8 + (chid * 12));
99 const struct nvkm_enum *reason =
100 nvkm_enum_find(nv50_disp_intr_error_type, type);
101
102 nvkm_error(subdev, "chid %d stat %08x reason %d [%s] mthd %04x "
103 "data %08x code %08x\n",
104 chid, stat, type, reason ? reason->name : "",
105 mthd, data, code);
106
107 if (chid < ARRAY_SIZE(disp->chan)) {
108 switch (mthd) {
109 case 0x0080:
110 nv50_disp_chan_mthd(disp->chan[chid], NV_DBG_ERROR);
111 break;
112 default:
113 break;
114 }
115 }
116
117 nvkm_wr32(device, 0x61009c, (1 << chid));
118 nvkm_wr32(device, 0x6101f0 + (chid * 12), 0x90000000);
119 }
120
121 void
gf119_disp_intr(struct nv50_disp * disp)122 gf119_disp_intr(struct nv50_disp *disp)
123 {
124 struct nvkm_subdev *subdev = &disp->base.engine.subdev;
125 struct nvkm_device *device = subdev->device;
126 struct nvkm_head *head;
127 u32 intr = nvkm_rd32(device, 0x610088);
128
129 if (intr & 0x00000001) {
130 u32 stat = nvkm_rd32(device, 0x61008c);
131 while (stat) {
132 int chid = __ffs(stat); stat &= ~(1 << chid);
133 nv50_disp_chan_uevent_send(disp, chid);
134 nvkm_wr32(device, 0x61008c, 1 << chid);
135 }
136 intr &= ~0x00000001;
137 }
138
139 if (intr & 0x00000002) {
140 u32 stat = nvkm_rd32(device, 0x61009c);
141 int chid = ffs(stat) - 1;
142 if (chid >= 0)
143 disp->func->intr_error(disp, chid);
144 intr &= ~0x00000002;
145 }
146
147 if (intr & 0x00100000) {
148 u32 stat = nvkm_rd32(device, 0x6100ac);
149 if (stat & 0x00000007) {
150 disp->super = (stat & 0x00000007);
151 queue_work(disp->wq, &disp->supervisor);
152 nvkm_wr32(device, 0x6100ac, disp->super);
153 stat &= ~0x00000007;
154 }
155
156 if (stat) {
157 nvkm_warn(subdev, "intr24 %08x\n", stat);
158 nvkm_wr32(device, 0x6100ac, stat);
159 }
160
161 intr &= ~0x00100000;
162 }
163
164 list_for_each_entry(head, &disp->base.head, head) {
165 const u32 hoff = head->id * 0x800;
166 u32 mask = 0x01000000 << head->id;
167 if (mask & intr) {
168 u32 stat = nvkm_rd32(device, 0x6100bc + hoff);
169 if (stat & 0x00000001)
170 nvkm_disp_vblank(&disp->base, head->id);
171 nvkm_mask(device, 0x6100bc + hoff, 0, 0);
172 nvkm_rd32(device, 0x6100c0 + hoff);
173 }
174 }
175 }
176
177 void
gf119_disp_fini(struct nv50_disp * disp)178 gf119_disp_fini(struct nv50_disp *disp)
179 {
180 struct nvkm_device *device = disp->base.engine.subdev.device;
181 /* disable all interrupts */
182 nvkm_wr32(device, 0x6100b0, 0x00000000);
183 }
184
185 int
gf119_disp_init(struct nv50_disp * disp)186 gf119_disp_init(struct nv50_disp *disp)
187 {
188 struct nvkm_device *device = disp->base.engine.subdev.device;
189 struct nvkm_head *head;
190 u32 tmp;
191 int i;
192
193 /* The below segments of code copying values from one register to
194 * another appear to inform EVO of the display capabilities or
195 * something similar.
196 */
197
198 /* ... CRTC caps */
199 list_for_each_entry(head, &disp->base.head, head) {
200 const u32 hoff = head->id * 0x800;
201 tmp = nvkm_rd32(device, 0x616104 + hoff);
202 nvkm_wr32(device, 0x6101b4 + hoff, tmp);
203 tmp = nvkm_rd32(device, 0x616108 + hoff);
204 nvkm_wr32(device, 0x6101b8 + hoff, tmp);
205 tmp = nvkm_rd32(device, 0x61610c + hoff);
206 nvkm_wr32(device, 0x6101bc + hoff, tmp);
207 }
208
209 /* ... DAC caps */
210 for (i = 0; i < disp->dac.nr; i++) {
211 tmp = nvkm_rd32(device, 0x61a000 + (i * 0x800));
212 nvkm_wr32(device, 0x6101c0 + (i * 0x800), tmp);
213 }
214
215 /* ... SOR caps */
216 for (i = 0; i < disp->sor.nr; i++) {
217 tmp = nvkm_rd32(device, 0x61c000 + (i * 0x800));
218 nvkm_wr32(device, 0x6301c4 + (i * 0x800), tmp);
219 }
220
221 /* steal display away from vbios, or something like that */
222 if (nvkm_rd32(device, 0x6100ac) & 0x00000100) {
223 nvkm_wr32(device, 0x6100ac, 0x00000100);
224 nvkm_mask(device, 0x6194e8, 0x00000001, 0x00000000);
225 if (nvkm_msec(device, 2000,
226 if (!(nvkm_rd32(device, 0x6194e8) & 0x00000002))
227 break;
228 ) < 0)
229 return -EBUSY;
230 }
231
232 /* point at display engine memory area (hash table, objects) */
233 nvkm_wr32(device, 0x610010, (disp->inst->addr >> 8) | 9);
234
235 /* enable supervisor interrupts, disable everything else */
236 nvkm_wr32(device, 0x610090, 0x00000000);
237 nvkm_wr32(device, 0x6100a0, 0x00000000);
238 nvkm_wr32(device, 0x6100b0, 0x00000307);
239
240 /* disable underflow reporting, preventing an intermittent issue
241 * on some gk104 boards where the production vbios left this
242 * setting enabled by default.
243 *
244 * ftp://download.nvidia.com/open-gpu-doc/gk104-disable-underflow-reporting/1/gk104-disable-underflow-reporting.txt
245 */
246 list_for_each_entry(head, &disp->base.head, head) {
247 const u32 hoff = head->id * 0x800;
248 nvkm_mask(device, 0x616308 + hoff, 0x00000111, 0x00000010);
249 }
250
251 return 0;
252 }
253
254 static const struct nv50_disp_func
255 gf119_disp = {
256 .init = gf119_disp_init,
257 .fini = gf119_disp_fini,
258 .intr = gf119_disp_intr,
259 .intr_error = gf119_disp_intr_error,
260 .uevent = &gf119_disp_chan_uevent,
261 .super = gf119_disp_super,
262 .root = &gf119_disp_root_oclass,
263 .head = { .cnt = gf119_head_cnt, .new = gf119_head_new },
264 .dac = { .cnt = gf119_dac_cnt, .new = gf119_dac_new },
265 .sor = { .cnt = gf119_sor_cnt, .new = gf119_sor_new },
266 };
267
268 int
gf119_disp_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_disp ** pdisp)269 gf119_disp_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
270 struct nvkm_disp **pdisp)
271 {
272 return nv50_disp_new_(&gf119_disp, device, type, inst, pdisp);
273 }
274