xref: /openbmc/linux/drivers/gpu/host1x/hw/debug_hw.c (revision 82e6fdd6)
1 /*
2  * Copyright (C) 2010 Google, Inc.
3  * Author: Erik Gilling <konkers@android.com>
4  *
5  * Copyright (C) 2011-2013 NVIDIA Corporation
6  *
7  * This software is licensed under the terms of the GNU General Public
8  * License version 2, as published by the Free Software Foundation, and
9  * may be copied, distributed, and modified under those terms.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  */
17 
18 #include "../dev.h"
19 #include "../debug.h"
20 #include "../cdma.h"
21 #include "../channel.h"
22 
23 #define HOST1X_DEBUG_MAX_PAGE_OFFSET 102400
24 
25 enum {
26 	HOST1X_OPCODE_SETCLASS	= 0x00,
27 	HOST1X_OPCODE_INCR	= 0x01,
28 	HOST1X_OPCODE_NONINCR	= 0x02,
29 	HOST1X_OPCODE_MASK	= 0x03,
30 	HOST1X_OPCODE_IMM	= 0x04,
31 	HOST1X_OPCODE_RESTART	= 0x05,
32 	HOST1X_OPCODE_GATHER	= 0x06,
33 	HOST1X_OPCODE_SETSTRMID = 0x07,
34 	HOST1X_OPCODE_SETAPPID  = 0x08,
35 	HOST1X_OPCODE_SETPYLD   = 0x09,
36 	HOST1X_OPCODE_INCR_W    = 0x0a,
37 	HOST1X_OPCODE_NONINCR_W = 0x0b,
38 	HOST1X_OPCODE_GATHER_W  = 0x0c,
39 	HOST1X_OPCODE_RESTART_W = 0x0d,
40 	HOST1X_OPCODE_EXTEND	= 0x0e,
41 };
42 
43 enum {
44 	HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK	= 0x00,
45 	HOST1X_OPCODE_EXTEND_RELEASE_MLOCK	= 0x01,
46 };
47 
48 #define INVALID_PAYLOAD				0xffffffff
49 
50 static unsigned int show_channel_command(struct output *o, u32 val,
51 					 u32 *payload)
52 {
53 	unsigned int mask, subop, num, opcode;
54 
55 	opcode = val >> 28;
56 
57 	switch (opcode) {
58 	case HOST1X_OPCODE_SETCLASS:
59 		mask = val & 0x3f;
60 		if (mask) {
61 			host1x_debug_cont(o, "SETCL(class=%03x, offset=%03x, mask=%02x, [",
62 					    val >> 6 & 0x3ff,
63 					    val >> 16 & 0xfff, mask);
64 			return hweight8(mask);
65 		}
66 
67 		host1x_debug_cont(o, "SETCL(class=%03x)\n", val >> 6 & 0x3ff);
68 		return 0;
69 
70 	case HOST1X_OPCODE_INCR:
71 		num = val & 0xffff;
72 		host1x_debug_cont(o, "INCR(offset=%03x, [",
73 				    val >> 16 & 0xfff);
74 		if (!num)
75 			host1x_debug_cont(o, "])\n");
76 
77 		return num;
78 
79 	case HOST1X_OPCODE_NONINCR:
80 		num = val & 0xffff;
81 		host1x_debug_cont(o, "NONINCR(offset=%03x, [",
82 				    val >> 16 & 0xfff);
83 		if (!num)
84 			host1x_debug_cont(o, "])\n");
85 
86 		return num;
87 
88 	case HOST1X_OPCODE_MASK:
89 		mask = val & 0xffff;
90 		host1x_debug_cont(o, "MASK(offset=%03x, mask=%03x, [",
91 				    val >> 16 & 0xfff, mask);
92 		if (!mask)
93 			host1x_debug_cont(o, "])\n");
94 
95 		return hweight16(mask);
96 
97 	case HOST1X_OPCODE_IMM:
98 		host1x_debug_cont(o, "IMM(offset=%03x, data=%03x)\n",
99 				    val >> 16 & 0xfff, val & 0xffff);
100 		return 0;
101 
102 	case HOST1X_OPCODE_RESTART:
103 		host1x_debug_cont(o, "RESTART(offset=%08x)\n", val << 4);
104 		return 0;
105 
106 	case HOST1X_OPCODE_GATHER:
107 		host1x_debug_cont(o, "GATHER(offset=%03x, insert=%d, type=%d, count=%04x, addr=[",
108 				    val >> 16 & 0xfff, val >> 15 & 0x1,
109 				    val >> 14 & 0x1, val & 0x3fff);
110 		return 1;
111 
112 #if HOST1X_HW >= 6
113 	case HOST1X_OPCODE_SETSTRMID:
114 		host1x_debug_cont(o, "SETSTRMID(offset=%06x)\n",
115 				  val & 0x3fffff);
116 		return 0;
117 
118 	case HOST1X_OPCODE_SETAPPID:
119 		host1x_debug_cont(o, "SETAPPID(appid=%02x)\n", val & 0xff);
120 		return 0;
121 
122 	case HOST1X_OPCODE_SETPYLD:
123 		*payload = val & 0xffff;
124 		host1x_debug_cont(o, "SETPYLD(data=%04x)\n", *payload);
125 		return 0;
126 
127 	case HOST1X_OPCODE_INCR_W:
128 	case HOST1X_OPCODE_NONINCR_W:
129 		host1x_debug_cont(o, "%s(offset=%06x, ",
130 				  opcode == HOST1X_OPCODE_INCR_W ?
131 					"INCR_W" : "NONINCR_W",
132 				  val & 0x3fffff);
133 		if (*payload == 0) {
134 			host1x_debug_cont(o, "[])\n");
135 			return 0;
136 		} else if (*payload == INVALID_PAYLOAD) {
137 			host1x_debug_cont(o, "unknown)\n");
138 			return 0;
139 		} else {
140 			host1x_debug_cont(o, "[");
141 			return *payload;
142 		}
143 
144 	case HOST1X_OPCODE_GATHER_W:
145 		host1x_debug_cont(o, "GATHER_W(count=%04x, addr=[",
146 				  val & 0x3fff);
147 		return 2;
148 #endif
149 
150 	case HOST1X_OPCODE_EXTEND:
151 		subop = val >> 24 & 0xf;
152 		if (subop == HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK)
153 			host1x_debug_cont(o, "ACQUIRE_MLOCK(index=%d)\n",
154 					    val & 0xff);
155 		else if (subop == HOST1X_OPCODE_EXTEND_RELEASE_MLOCK)
156 			host1x_debug_cont(o, "RELEASE_MLOCK(index=%d)\n",
157 					    val & 0xff);
158 		else
159 			host1x_debug_cont(o, "EXTEND_UNKNOWN(%08x)\n", val);
160 		return 0;
161 
162 	default:
163 		host1x_debug_cont(o, "UNKNOWN\n");
164 		return 0;
165 	}
166 }
167 
168 static void show_gather(struct output *o, phys_addr_t phys_addr,
169 			unsigned int words, struct host1x_cdma *cdma,
170 			phys_addr_t pin_addr, u32 *map_addr)
171 {
172 	/* Map dmaget cursor to corresponding mem handle */
173 	u32 offset = phys_addr - pin_addr;
174 	unsigned int data_count = 0, i;
175 	u32 payload = INVALID_PAYLOAD;
176 
177 	/*
178 	 * Sometimes we're given different hardware address to the same
179 	 * page - in these cases the offset will get an invalid number and
180 	 * we just have to bail out.
181 	 */
182 	if (offset > HOST1X_DEBUG_MAX_PAGE_OFFSET) {
183 		host1x_debug_output(o, "[address mismatch]\n");
184 		return;
185 	}
186 
187 	for (i = 0; i < words; i++) {
188 		u32 addr = phys_addr + i * 4;
189 		u32 val = *(map_addr + offset / 4 + i);
190 
191 		if (!data_count) {
192 			host1x_debug_output(o, "%08x: %08x: ", addr, val);
193 			data_count = show_channel_command(o, val, &payload);
194 		} else {
195 			host1x_debug_cont(o, "%08x%s", val,
196 					    data_count > 1 ? ", " : "])\n");
197 			data_count--;
198 		}
199 	}
200 }
201 
202 static void show_channel_gathers(struct output *o, struct host1x_cdma *cdma)
203 {
204 	struct host1x_job *job;
205 
206 	list_for_each_entry(job, &cdma->sync_queue, list) {
207 		unsigned int i;
208 
209 		host1x_debug_output(o, "\n%p: JOB, syncpt_id=%d, syncpt_val=%d, first_get=%08x, timeout=%d num_slots=%d, num_handles=%d\n",
210 				    job, job->syncpt_id, job->syncpt_end,
211 				    job->first_get, job->timeout,
212 				    job->num_slots, job->num_unpins);
213 
214 		for (i = 0; i < job->num_gathers; i++) {
215 			struct host1x_job_gather *g = &job->gathers[i];
216 			u32 *mapped;
217 
218 			if (job->gather_copy_mapped)
219 				mapped = (u32 *)job->gather_copy_mapped;
220 			else
221 				mapped = host1x_bo_mmap(g->bo);
222 
223 			if (!mapped) {
224 				host1x_debug_output(o, "[could not mmap]\n");
225 				continue;
226 			}
227 
228 			host1x_debug_output(o, "    GATHER at %pad+%#x, %d words\n",
229 					    &g->base, g->offset, g->words);
230 
231 			show_gather(o, g->base + g->offset, g->words, cdma,
232 				    g->base, mapped);
233 
234 			if (!job->gather_copy_mapped)
235 				host1x_bo_munmap(g->bo, mapped);
236 		}
237 	}
238 }
239 
240 #if HOST1X_HW >= 6
241 #include "debug_hw_1x06.c"
242 #else
243 #include "debug_hw_1x01.c"
244 #endif
245 
246 static const struct host1x_debug_ops host1x_debug_ops = {
247 	.show_channel_cdma = host1x_debug_show_channel_cdma,
248 	.show_channel_fifo = host1x_debug_show_channel_fifo,
249 	.show_mlocks = host1x_debug_show_mlocks,
250 };
251