summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/etnaviv/etnaviv_dump.c
blob: 7e6791517693af23ba4d1158d1767be93edfebca (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2015-2018 Etnaviv Project
 */

#include <linux/devcoredump.h>
#include <linux/moduleparam.h>

#include "etnaviv_cmdbuf.h"
#include "etnaviv_dump.h"
#include "etnaviv_gem.h"
#include "etnaviv_gpu.h"
#include "etnaviv_mmu.h"
#include "etnaviv_sched.h"
#include "state.xml.h"
#include "state_hi.xml.h"

static bool etnaviv_dump_core = true;
module_param_named(dump_core, etnaviv_dump_core, bool, 0600);

struct core_dump_iterator {
	void *start;
	struct etnaviv_dump_object_header *hdr;
	void *data;
};

static const unsigned short etnaviv_dump_registers[] = {
	VIVS_HI_AXI_STATUS,
	VIVS_HI_CLOCK_CONTROL,
	VIVS_HI_IDLE_STATE,
	VIVS_HI_AXI_CONFIG,
	VIVS_HI_INTR_ENBL,
	VIVS_HI_CHIP_IDENTITY,
	VIVS_HI_CHIP_FEATURE,
	VIVS_HI_CHIP_MODEL,
	VIVS_HI_CHIP_REV,
	VIVS_HI_CHIP_DATE,
	VIVS_HI_CHIP_TIME,
	VIVS_HI_CHIP_MINOR_FEATURE_0,
	VIVS_HI_CACHE_CONTROL,
	VIVS_HI_AXI_CONTROL,
	VIVS_PM_POWER_CONTROLS,
	VIVS_PM_MODULE_CONTROLS,
	VIVS_PM_MODULE_STATUS,
	VIVS_PM_PULSE_EATER,
	VIVS_MC_MMU_FE_PAGE_TABLE,
	VIVS_MC_MMU_TX_PAGE_TABLE,
	VIVS_MC_MMU_PE_PAGE_TABLE,
	VIVS_MC_MMU_PEZ_PAGE_TABLE,
	VIVS_MC_MMU_RA_PAGE_TABLE,
	VIVS_MC_DEBUG_MEMORY,
	VIVS_MC_MEMORY_BASE_ADDR_RA,
	VIVS_MC_MEMORY_BASE_ADDR_FE,
	VIVS_MC_MEMORY_BASE_ADDR_TX,
	VIVS_MC_MEMORY_BASE_ADDR_PEZ,
	VIVS_MC_MEMORY_BASE_ADDR_PE,
	VIVS_MC_MEMORY_TIMING_CONTROL,
	VIVS_MC_BUS_CONFIG,
	VIVS_FE_DMA_STATUS,
	VIVS_FE_DMA_DEBUG_STATE,
	VIVS_FE_DMA_ADDRESS,
	VIVS_FE_DMA_LOW,
	VIVS_FE_DMA_HIGH,
	VIVS_FE_AUTO_FLUSH,
};

static void etnaviv_core_dump_header(struct core_dump_iterator *iter,
	u32 type, void *data_end)
{
	struct etnaviv_dump_object_header *hdr = iter->hdr;

	hdr->magic = cpu_to_le32(ETDUMP_MAGIC);
	hdr->type = cpu_to_le32(type);
	hdr->file_offset = cpu_to_le32(iter->data - iter->start);
	hdr->file_size = cpu_to_le32(data_end - iter->data);

	iter->hdr++;
	iter->data += hdr->file_size;
}

static void etnaviv_core_dump_registers(struct core_dump_iterator *iter,
	struct etnaviv_gpu *gpu)
{
	struct etnaviv_dump_registers *reg = iter->data;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(etnaviv_dump_registers); i++, reg++) {
		reg->reg = etnaviv_dump_registers[i];
		reg->value = gpu_read(gpu, etnaviv_dump_registers[i]);
	}

	etnaviv_core_dump_header(iter, ETDUMP_BUF_REG, reg);
}

static void etnaviv_core_dump_mmu(struct core_dump_iterator *iter,
	struct etnaviv_iommu_context *mmu, size_t mmu_size)
{
	etnaviv_iommu_dump(mmu, iter->data);

	etnaviv_core_dump_header(iter, ETDUMP_BUF_MMU, iter->data + mmu_size);
}

static void etnaviv_core_dump_mem(struct core_dump_iterator *iter, u32 type,
	void *ptr, size_t size, u64 iova)
{
	memcpy(iter->data, ptr, size);

	iter->hdr->iova = cpu_to_le64(iova);

	etnaviv_core_dump_header(iter, type, iter->data + size);
}

void etnaviv_core_dump(struct etnaviv_gem_submit *submit)
{
	struct etnaviv_gpu *gpu = submit->gpu;
	struct core_dump_iterator iter;
	struct etnaviv_gem_object *obj;
	unsigned int n_obj, n_bomap_pages;
	size_t file_size, mmu_size;
	__le64 *bomap, *bomap_start;
	int i;

	/* Only catch the first event, or when manually re-armed */
	if (!etnaviv_dump_core)
		return;
	etnaviv_dump_core = false;

	mutex_lock(&gpu->mmu_context->lock);

	mmu_size = etnaviv_iommu_dump_size(gpu->mmu_context);

	/* We always dump registers, mmu, ring, hanging cmdbuf and end marker */
	n_obj = 5;
	n_bomap_pages = 0;
	file_size = ARRAY_SIZE(etnaviv_dump_registers) *
			sizeof(struct etnaviv_dump_registers) +
		    mmu_size + gpu->buffer.size + submit->cmdbuf.size;

	/* Add in the active buffer objects */
	for (i = 0; i < submit->nr_bos; i++) {
		obj = submit->bos[i].obj;
		file_size += obj->base.size;
		n_bomap_pages += obj->base.size >> PAGE_SHIFT;
		n_obj++;
	}

	/* If we have any buffer objects, add a bomap object */
	if (n_bomap_pages) {
		file_size += n_bomap_pages * sizeof(__le64);
		n_obj++;
	}

	/* Add the size of the headers */
	file_size += sizeof(*iter.hdr) * n_obj;

	/* Allocate the file in vmalloc memory, it's likely to be big */
	iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY,
			       PAGE_KERNEL);
	if (!iter.start) {
		mutex_unlock(&gpu->mmu_context->lock);
		dev_warn(gpu->dev, "failed to allocate devcoredump file\n");
		return;
	}

	/* Point the data member after the headers */
	iter.hdr = iter.start;
	iter.data = &iter.hdr[n_obj];

	memset(iter.hdr, 0, iter.data - iter.start);

	etnaviv_core_dump_registers(&iter, gpu);
	etnaviv_core_dump_mmu(&iter, gpu->mmu_context, mmu_size);
	etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer.vaddr,
			      gpu->buffer.size,
			      etnaviv_cmdbuf_get_va(&gpu->buffer,
						    &gpu->cmdbuf_mapping));

	etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD,
			      submit->cmdbuf.vaddr, submit->cmdbuf.size,
			      etnaviv_cmdbuf_get_va(&submit->cmdbuf,
						    &gpu->cmdbuf_mapping));

	/* Reserve space for the bomap */
	if (n_bomap_pages) {
		bomap_start = bomap = iter.data;
		memset(bomap, 0, sizeof(*bomap) * n_bomap_pages);
		etnaviv_core_dump_header(&iter, ETDUMP_BUF_BOMAP,
					 bomap + n_bomap_pages);
	} else {
		/* Silence warning */
		bomap_start = bomap = NULL;
	}

	for (i = 0; i < submit->nr_bos; i++) {
		struct etnaviv_vram_mapping *vram;
		struct page **pages;
		void *vaddr;

		obj = submit->bos[i].obj;
		vram = submit->bos[i].mapping;

		mutex_lock(&obj->lock);
		pages = etnaviv_gem_get_pages(obj);
		mutex_unlock(&obj->lock);
		if (!IS_ERR(pages)) {
			int j;

			iter.hdr->data[0] = bomap - bomap_start;

			for (j = 0; j < obj->base.size >> PAGE_SHIFT; j++)
				*bomap++ = cpu_to_le64(page_to_phys(*pages++));
		}

		iter.hdr->iova = cpu_to_le64(vram->iova);

		vaddr = etnaviv_gem_vmap(&obj->base);
		if (vaddr)
			memcpy(iter.data, vaddr, obj->base.size);

		etnaviv_core_dump_header(&iter, ETDUMP_BUF_BO, iter.data +
					 obj->base.size);
	}

	mutex_unlock(&gpu->mmu_context->lock);

	etnaviv_core_dump_header(&iter, ETDUMP_BUF_END, iter.data);

	dev_coredumpv(gpu->dev, iter.start, iter.data - iter.start, GFP_KERNEL);
}