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 
26 #include <subdev/timer.h>
27 
28 #include <nvif/class.h>
29 
30 static const struct nvkm_bitfield nv50_gr_status[] = {
31 	{ 0x00000001, "BUSY" }, /* set when any bit is set */
32 	{ 0x00000002, "DISPATCH" },
33 	{ 0x00000004, "UNK2" },
34 	{ 0x00000008, "UNK3" },
35 	{ 0x00000010, "UNK4" },
36 	{ 0x00000020, "UNK5" },
37 	{ 0x00000040, "M2MF" },
38 	{ 0x00000080, "UNK7" },
39 	{ 0x00000100, "CTXPROG" },
40 	{ 0x00000200, "VFETCH" },
41 	{ 0x00000400, "CCACHE_PREGEOM" },
42 	{ 0x00000800, "STRMOUT_VATTR_POSTGEOM" },
43 	{ 0x00001000, "VCLIP" },
44 	{ 0x00002000, "RATTR_APLANE" },
45 	{ 0x00004000, "TRAST" },
46 	{ 0x00008000, "CLIPID" },
47 	{ 0x00010000, "ZCULL" },
48 	{ 0x00020000, "ENG2D" },
49 	{ 0x00040000, "RMASK" },
50 	{ 0x00080000, "TPC_RAST" },
51 	{ 0x00100000, "TPC_PROP" },
52 	{ 0x00200000, "TPC_TEX" },
53 	{ 0x00400000, "TPC_GEOM" },
54 	{ 0x00800000, "TPC_MP" },
55 	{ 0x01000000, "ROP" },
56 	{}
57 };
58 
59 static const struct nvkm_bitfield
60 nv50_gr_vstatus_0[] = {
61 	{ 0x01, "VFETCH" },
62 	{ 0x02, "CCACHE" },
63 	{ 0x04, "PREGEOM" },
64 	{ 0x08, "POSTGEOM" },
65 	{ 0x10, "VATTR" },
66 	{ 0x20, "STRMOUT" },
67 	{ 0x40, "VCLIP" },
68 	{}
69 };
70 
71 static const struct nvkm_bitfield
72 nv50_gr_vstatus_1[] = {
73 	{ 0x01, "TPC_RAST" },
74 	{ 0x02, "TPC_PROP" },
75 	{ 0x04, "TPC_TEX" },
76 	{ 0x08, "TPC_GEOM" },
77 	{ 0x10, "TPC_MP" },
78 	{}
79 };
80 
81 static const struct nvkm_bitfield
82 nv50_gr_vstatus_2[] = {
83 	{ 0x01, "RATTR" },
84 	{ 0x02, "APLANE" },
85 	{ 0x04, "TRAST" },
86 	{ 0x08, "CLIPID" },
87 	{ 0x10, "ZCULL" },
88 	{ 0x20, "ENG2D" },
89 	{ 0x40, "RMASK" },
90 	{ 0x80, "ROP" },
91 	{}
92 };
93 
94 static void
95 nvkm_gr_vstatus_print(struct nv50_gr *gr, int r,
96 		      const struct nvkm_bitfield *units, u32 status)
97 {
98 	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
99 	u32 stat = status;
100 	u8  mask = 0x00;
101 	char msg[64];
102 	int i;
103 
104 	for (i = 0; units[i].name && status; i++) {
105 		if ((status & 7) == 1)
106 			mask |= (1 << i);
107 		status >>= 3;
108 	}
109 
110 	nvkm_snprintbf(msg, sizeof(msg), units, mask);
111 	nvkm_error(subdev, "PGRAPH_VSTATUS%d: %08x [%s]\n", r, stat, msg);
112 }
113 
114 int
115 g84_gr_tlb_flush(struct nvkm_gr *base)
116 {
117 	struct nv50_gr *gr = nv50_gr(base);
118 	struct nvkm_subdev *subdev = &gr->base.engine.subdev;
119 	struct nvkm_device *device = subdev->device;
120 	struct nvkm_timer *tmr = device->timer;
121 	bool idle, timeout = false;
122 	unsigned long flags;
123 	char status[128];
124 	u64 start;
125 	u32 tmp;
126 
127 	spin_lock_irqsave(&gr->lock, flags);
128 	nvkm_mask(device, 0x400500, 0x00000001, 0x00000000);
129 
130 	start = nvkm_timer_read(tmr);
131 	do {
132 		idle = true;
133 
134 		for (tmp = nvkm_rd32(device, 0x400380); tmp && idle; tmp >>= 3) {
135 			if ((tmp & 7) == 1)
136 				idle = false;
137 		}
138 
139 		for (tmp = nvkm_rd32(device, 0x400384); tmp && idle; tmp >>= 3) {
140 			if ((tmp & 7) == 1)
141 				idle = false;
142 		}
143 
144 		for (tmp = nvkm_rd32(device, 0x400388); tmp && idle; tmp >>= 3) {
145 			if ((tmp & 7) == 1)
146 				idle = false;
147 		}
148 	} while (!idle &&
149 		 !(timeout = nvkm_timer_read(tmr) - start > 2000000000));
150 
151 	if (timeout) {
152 		nvkm_error(subdev, "PGRAPH TLB flush idle timeout fail\n");
153 
154 		tmp = nvkm_rd32(device, 0x400700);
155 		nvkm_snprintbf(status, sizeof(status), nv50_gr_status, tmp);
156 		nvkm_error(subdev, "PGRAPH_STATUS %08x [%s]\n", tmp, status);
157 
158 		nvkm_gr_vstatus_print(gr, 0, nv50_gr_vstatus_0,
159 				       nvkm_rd32(device, 0x400380));
160 		nvkm_gr_vstatus_print(gr, 1, nv50_gr_vstatus_1,
161 				       nvkm_rd32(device, 0x400384));
162 		nvkm_gr_vstatus_print(gr, 2, nv50_gr_vstatus_2,
163 				       nvkm_rd32(device, 0x400388));
164 	}
165 
166 
167 	nvkm_wr32(device, 0x100c80, 0x00000001);
168 	nvkm_msec(device, 2000,
169 		if (!(nvkm_rd32(device, 0x100c80) & 0x00000001))
170 			break;
171 	);
172 	nvkm_mask(device, 0x400500, 0x00000001, 0x00000001);
173 	spin_unlock_irqrestore(&gr->lock, flags);
174 	return timeout ? -EBUSY : 0;
175 }
176 
177 static const struct nvkm_gr_func
178 g84_gr = {
179 	.init = nv50_gr_init,
180 	.intr = nv50_gr_intr,
181 	.chan_new = nv50_gr_chan_new,
182 	.tlb_flush = g84_gr_tlb_flush,
183 	.units = nv50_gr_units,
184 	.sclass = {
185 		{ -1, -1, NV_NULL_CLASS, &nv50_gr_object },
186 		{ -1, -1, NV50_TWOD, &nv50_gr_object },
187 		{ -1, -1, NV50_MEMORY_TO_MEMORY_FORMAT, &nv50_gr_object },
188 		{ -1, -1, NV50_COMPUTE, &nv50_gr_object },
189 		{ -1, -1, G82_TESLA, &nv50_gr_object },
190 		{}
191 	}
192 };
193 
194 int
195 g84_gr_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_gr **pgr)
196 {
197 	return nv50_gr_new_(&g84_gr, device, type, inst, pgr);
198 }
199