Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0+
2/* Copyright (C) 2014-2018 Broadcom */
3
4#include <linux/circ_buf.h>
5#include <linux/ctype.h>
6#include <linux/debugfs.h>
7#include <linux/seq_file.h>
8#include <linux/string_helpers.h>
9
10#include <drm/drm_debugfs.h>
11#include <drm/drm_print.h>
12
13#include "v3d_drv.h"
14#include "v3d_regs.h"
15
16#define REGDEF(min_ver, max_ver, reg) { min_ver, max_ver, reg, #reg }
17struct v3d_reg_def {
18 u32 min_ver;
19 u32 max_ver;
20 u32 reg;
21 const char *name;
22};
23
24static const struct v3d_reg_def v3d_hub_reg_defs[] = {
25 REGDEF(V3D_GEN_33, V3D_GEN_42, V3D_HUB_AXICFG),
26 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_UIFCFG),
27 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_IDENT0),
28 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_IDENT1),
29 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_IDENT2),
30 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_IDENT3),
31 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_INT_STS),
32 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_HUB_INT_MSK_STS),
33
34 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_MMU_CTL),
35 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_MMU_VIO_ADDR),
36 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_MMU_VIO_ID),
37 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_MMU_DEBUG_INFO),
38
39 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_GMP_STATUS(71)),
40 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_GMP_CFG(71)),
41 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_GMP_VIO_ADDR(71)),
42};
43
44static const struct v3d_reg_def v3d_gca_reg_defs[] = {
45 REGDEF(V3D_GEN_33, V3D_GEN_33, V3D_GCA_SAFE_SHUTDOWN),
46 REGDEF(V3D_GEN_33, V3D_GEN_33, V3D_GCA_SAFE_SHUTDOWN_ACK),
47};
48
49static const struct v3d_reg_def v3d_core_reg_defs[] = {
50 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_IDENT0),
51 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_IDENT1),
52 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_IDENT2),
53 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_MISCCFG),
54 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_INT_STS),
55 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CTL_INT_MSK_STS),
56 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT0CS),
57 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT0CA),
58 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT0EA),
59 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT1CS),
60 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT1CA),
61 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_CLE_CT1EA),
62
63 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_PTB_BPCA),
64 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_PTB_BPCS),
65
66 REGDEF(V3D_GEN_33, V3D_GEN_42, V3D_GMP_STATUS(33)),
67 REGDEF(V3D_GEN_33, V3D_GEN_42, V3D_GMP_CFG(33)),
68 REGDEF(V3D_GEN_33, V3D_GEN_42, V3D_GMP_VIO_ADDR(33)),
69
70 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_ERR_FDBGO),
71 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_ERR_FDBGB),
72 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_ERR_FDBGS),
73 REGDEF(V3D_GEN_33, V3D_GEN_71, V3D_ERR_STAT),
74};
75
76static const struct v3d_reg_def v3d_csd_reg_defs[] = {
77 REGDEF(V3D_GEN_41, V3D_GEN_71, V3D_CSD_STATUS),
78 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG0(41)),
79 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG1(41)),
80 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG2(41)),
81 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG3(41)),
82 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG4(41)),
83 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG5(41)),
84 REGDEF(V3D_GEN_41, V3D_GEN_42, V3D_CSD_CURRENT_CFG6(41)),
85 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG0(71)),
86 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG1(71)),
87 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG2(71)),
88 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG3(71)),
89 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG4(71)),
90 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG5(71)),
91 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_CSD_CURRENT_CFG6(71)),
92 REGDEF(V3D_GEN_71, V3D_GEN_71, V3D_V7_CSD_CURRENT_CFG7),
93};
94
95static int v3d_v3d_debugfs_regs(struct seq_file *m, void *unused)
96{
97 struct drm_debugfs_entry *entry = m->private;
98 struct drm_device *dev = entry->dev;
99 struct v3d_dev *v3d = to_v3d_dev(dev);
100 int i, core;
101
102 for (i = 0; i < ARRAY_SIZE(v3d_hub_reg_defs); i++) {
103 const struct v3d_reg_def *def = &v3d_hub_reg_defs[i];
104
105 if (v3d->ver >= def->min_ver && v3d->ver <= def->max_ver) {
106 seq_printf(m, "%s (0x%04x): 0x%08x\n",
107 def->name, def->reg, V3D_READ(def->reg));
108 }
109 }
110
111 for (i = 0; i < ARRAY_SIZE(v3d_gca_reg_defs); i++) {
112 const struct v3d_reg_def *def = &v3d_gca_reg_defs[i];
113
114 if (v3d->ver >= def->min_ver && v3d->ver <= def->max_ver) {
115 seq_printf(m, "%s (0x%04x): 0x%08x\n",
116 def->name, def->reg, V3D_GCA_READ(def->reg));
117 }
118 }
119
120 for (core = 0; core < v3d->cores; core++) {
121 for (i = 0; i < ARRAY_SIZE(v3d_core_reg_defs); i++) {
122 const struct v3d_reg_def *def = &v3d_core_reg_defs[i];
123
124 if (v3d->ver >= def->min_ver && v3d->ver <= def->max_ver) {
125 seq_printf(m, "core %d %s (0x%04x): 0x%08x\n",
126 core, def->name, def->reg,
127 V3D_CORE_READ(core, def->reg));
128 }
129 }
130
131 for (i = 0; i < ARRAY_SIZE(v3d_csd_reg_defs); i++) {
132 const struct v3d_reg_def *def = &v3d_csd_reg_defs[i];
133
134 if (v3d->ver >= def->min_ver && v3d->ver <= def->max_ver) {
135 seq_printf(m, "core %d %s (0x%04x): 0x%08x\n",
136 core, def->name, def->reg,
137 V3D_CORE_READ(core, def->reg));
138 }
139 }
140 }
141
142 return 0;
143}
144
145static int v3d_v3d_debugfs_ident(struct seq_file *m, void *unused)
146{
147 struct drm_debugfs_entry *entry = m->private;
148 struct drm_device *dev = entry->dev;
149 struct v3d_dev *v3d = to_v3d_dev(dev);
150 u32 ident0, ident1, ident2, ident3, cores;
151 int core;
152
153 ident0 = V3D_READ(V3D_HUB_IDENT0);
154 ident1 = V3D_READ(V3D_HUB_IDENT1);
155 ident2 = V3D_READ(V3D_HUB_IDENT2);
156 ident3 = V3D_READ(V3D_HUB_IDENT3);
157 cores = V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_NCORES);
158
159 seq_printf(m, "Revision: %d.%d.%d.%d\n",
160 V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_TVER),
161 V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_REV),
162 V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPREV),
163 V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPIDX));
164 seq_printf(m, "MMU: %s\n",
165 str_yes_no(ident2 & V3D_HUB_IDENT2_WITH_MMU));
166 seq_printf(m, "TFU: %s\n",
167 str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_TFU));
168 if (v3d->ver <= V3D_GEN_42) {
169 seq_printf(m, "TSY: %s\n",
170 str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_TSY));
171 }
172 seq_printf(m, "MSO: %s\n",
173 str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_MSO));
174 seq_printf(m, "L3C: %s (%dkb)\n",
175 str_yes_no(ident1 & V3D_HUB_IDENT1_WITH_L3C),
176 V3D_GET_FIELD(ident2, V3D_HUB_IDENT2_L3C_NKB));
177
178 for (core = 0; core < cores; core++) {
179 u32 misccfg;
180 u32 nslc, ntmu, qups;
181
182 ident0 = V3D_CORE_READ(core, V3D_CTL_IDENT0);
183 ident1 = V3D_CORE_READ(core, V3D_CTL_IDENT1);
184 ident2 = V3D_CORE_READ(core, V3D_CTL_IDENT2);
185 misccfg = V3D_CORE_READ(core, V3D_CTL_MISCCFG);
186
187 nslc = V3D_GET_FIELD(ident1, V3D_IDENT1_NSLC);
188 ntmu = V3D_GET_FIELD(ident1, V3D_IDENT1_NTMU);
189 qups = V3D_GET_FIELD(ident1, V3D_IDENT1_QUPS);
190
191 seq_printf(m, "Core %d:\n", core);
192 seq_printf(m, " Revision: %d.%d\n",
193 V3D_GET_FIELD(ident0, V3D_IDENT0_VER),
194 V3D_GET_FIELD(ident1, V3D_IDENT1_REV));
195 seq_printf(m, " Slices: %d\n", nslc);
196 seq_printf(m, " TMUs: %d\n", nslc * ntmu);
197 seq_printf(m, " QPUs: %d\n", nslc * qups);
198 seq_printf(m, " Semaphores: %d\n",
199 V3D_GET_FIELD(ident1, V3D_IDENT1_NSEM));
200 if (v3d->ver <= V3D_GEN_42) {
201 seq_printf(m, " BCG int: %d\n",
202 (ident2 & V3D_IDENT2_BCG_INT) != 0);
203 }
204 if (v3d->ver < V3D_GEN_41) {
205 seq_printf(m, " Override TMU: %d\n",
206 (misccfg & V3D_MISCCFG_OVRTMUOUT) != 0);
207 }
208 }
209
210 return 0;
211}
212
213static int v3d_debugfs_bo_stats(struct seq_file *m, void *unused)
214{
215 struct drm_debugfs_entry *entry = m->private;
216 struct drm_device *dev = entry->dev;
217 struct v3d_dev *v3d = to_v3d_dev(dev);
218
219 mutex_lock(&v3d->bo_lock);
220 seq_printf(m, "allocated bos: %d\n",
221 v3d->bo_stats.num_allocated);
222 seq_printf(m, "allocated bo size (kb): %ld\n",
223 (long)v3d->bo_stats.pages_allocated << (V3D_MMU_PAGE_SHIFT - 10));
224 mutex_unlock(&v3d->bo_lock);
225
226 return 0;
227}
228
229static int v3d_measure_clock(struct seq_file *m, void *unused)
230{
231 struct drm_debugfs_entry *entry = m->private;
232 struct drm_device *dev = entry->dev;
233 struct v3d_dev *v3d = to_v3d_dev(dev);
234 uint32_t cycles;
235 int core = 0;
236 int measure_ms = 1000;
237
238 if (v3d->ver >= V3D_GEN_41) {
239 int cycle_count_reg = V3D_PCTR_CYCLE_COUNT(v3d->ver);
240 V3D_CORE_WRITE(core, V3D_V4_PCTR_0_SRC_0_3,
241 V3D_SET_FIELD_VER(cycle_count_reg,
242 V3D_PCTR_S0, v3d->ver));
243 V3D_CORE_WRITE(core, V3D_V4_PCTR_0_CLR, 1);
244 V3D_CORE_WRITE(core, V3D_V4_PCTR_0_EN, 1);
245 } else {
246 V3D_CORE_WRITE(core, V3D_V3_PCTR_0_PCTRS0,
247 V3D_PCTR_CYCLE_COUNT(v3d->ver));
248 V3D_CORE_WRITE(core, V3D_V3_PCTR_0_CLR, 1);
249 V3D_CORE_WRITE(core, V3D_V3_PCTR_0_EN,
250 V3D_V3_PCTR_0_EN_ENABLE |
251 1);
252 }
253 msleep(measure_ms);
254 cycles = V3D_CORE_READ(core, V3D_PCTR_0_PCTR0);
255
256 seq_printf(m, "cycles: %d (%d.%d Mhz)\n",
257 cycles,
258 cycles / (measure_ms * 1000),
259 (cycles / (measure_ms * 100)) % 10);
260
261 return 0;
262}
263
264static int v3d_debugfs_mm(struct seq_file *m, void *unused)
265{
266 struct drm_printer p = drm_seq_file_printer(m);
267 struct drm_debugfs_entry *entry = m->private;
268 struct drm_device *dev = entry->dev;
269 struct v3d_dev *v3d = to_v3d_dev(dev);
270
271 spin_lock(&v3d->mm_lock);
272 drm_mm_print(&v3d->mm, &p);
273 spin_unlock(&v3d->mm_lock);
274
275 return 0;
276}
277
278static const struct drm_debugfs_info v3d_debugfs_list[] = {
279 {"v3d_ident", v3d_v3d_debugfs_ident, 0},
280 {"v3d_regs", v3d_v3d_debugfs_regs, 0},
281 {"measure_clock", v3d_measure_clock, 0},
282 {"bo_stats", v3d_debugfs_bo_stats, 0},
283 {"v3d_mm", v3d_debugfs_mm, 0},
284};
285
286void
287v3d_debugfs_init(struct drm_minor *minor)
288{
289 drm_debugfs_add_files(minor->dev, v3d_debugfs_list, ARRAY_SIZE(v3d_debugfs_list));
290}