1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2015-2018 Etnaviv Project 4 */ 5 6 #include <linux/devcoredump.h> 7 #include <linux/moduleparam.h> 8 9 #include "etnaviv_cmdbuf.h" 10 #include "etnaviv_dump.h" 11 #include "etnaviv_gem.h" 12 #include "etnaviv_gpu.h" 13 #include "etnaviv_mmu.h" 14 #include "etnaviv_sched.h" 15 #include "state.xml.h" 16 #include "state_hi.xml.h" 17 18 static bool etnaviv_dump_core = true; 19 module_param_named(dump_core, etnaviv_dump_core, bool, 0600); 20 21 struct core_dump_iterator { 22 void *start; 23 struct etnaviv_dump_object_header *hdr; 24 void *data; 25 }; 26 27 static const unsigned short etnaviv_dump_registers[] = { 28 VIVS_HI_AXI_STATUS, 29 VIVS_HI_CLOCK_CONTROL, 30 VIVS_HI_IDLE_STATE, 31 VIVS_HI_AXI_CONFIG, 32 VIVS_HI_INTR_ENBL, 33 VIVS_HI_CHIP_IDENTITY, 34 VIVS_HI_CHIP_FEATURE, 35 VIVS_HI_CHIP_MODEL, 36 VIVS_HI_CHIP_REV, 37 VIVS_HI_CHIP_DATE, 38 VIVS_HI_CHIP_TIME, 39 VIVS_HI_CHIP_MINOR_FEATURE_0, 40 VIVS_HI_CACHE_CONTROL, 41 VIVS_HI_AXI_CONTROL, 42 VIVS_PM_POWER_CONTROLS, 43 VIVS_PM_MODULE_CONTROLS, 44 VIVS_PM_MODULE_STATUS, 45 VIVS_PM_PULSE_EATER, 46 VIVS_MC_MMU_FE_PAGE_TABLE, 47 VIVS_MC_MMU_TX_PAGE_TABLE, 48 VIVS_MC_MMU_PE_PAGE_TABLE, 49 VIVS_MC_MMU_PEZ_PAGE_TABLE, 50 VIVS_MC_MMU_RA_PAGE_TABLE, 51 VIVS_MC_DEBUG_MEMORY, 52 VIVS_MC_MEMORY_BASE_ADDR_RA, 53 VIVS_MC_MEMORY_BASE_ADDR_FE, 54 VIVS_MC_MEMORY_BASE_ADDR_TX, 55 VIVS_MC_MEMORY_BASE_ADDR_PEZ, 56 VIVS_MC_MEMORY_BASE_ADDR_PE, 57 VIVS_MC_MEMORY_TIMING_CONTROL, 58 VIVS_MC_BUS_CONFIG, 59 VIVS_FE_DMA_STATUS, 60 VIVS_FE_DMA_DEBUG_STATE, 61 VIVS_FE_DMA_ADDRESS, 62 VIVS_FE_DMA_LOW, 63 VIVS_FE_DMA_HIGH, 64 VIVS_FE_AUTO_FLUSH, 65 }; 66 67 static void etnaviv_core_dump_header(struct core_dump_iterator *iter, 68 u32 type, void *data_end) 69 { 70 struct etnaviv_dump_object_header *hdr = iter->hdr; 71 72 hdr->magic = cpu_to_le32(ETDUMP_MAGIC); 73 hdr->type = cpu_to_le32(type); 74 hdr->file_offset = cpu_to_le32(iter->data - iter->start); 75 hdr->file_size = cpu_to_le32(data_end - iter->data); 76 77 iter->hdr++; 78 iter->data += hdr->file_size; 79 } 80 81 static void etnaviv_core_dump_registers(struct core_dump_iterator *iter, 82 struct etnaviv_gpu *gpu) 83 { 84 struct etnaviv_dump_registers *reg = iter->data; 85 unsigned int i; 86 87 for (i = 0; i < ARRAY_SIZE(etnaviv_dump_registers); i++, reg++) { 88 reg->reg = etnaviv_dump_registers[i]; 89 reg->value = gpu_read(gpu, etnaviv_dump_registers[i]); 90 } 91 92 etnaviv_core_dump_header(iter, ETDUMP_BUF_REG, reg); 93 } 94 95 static void etnaviv_core_dump_mmu(struct core_dump_iterator *iter, 96 struct etnaviv_iommu_context *mmu, size_t mmu_size) 97 { 98 etnaviv_iommu_dump(mmu, iter->data); 99 100 etnaviv_core_dump_header(iter, ETDUMP_BUF_MMU, iter->data + mmu_size); 101 } 102 103 static void etnaviv_core_dump_mem(struct core_dump_iterator *iter, u32 type, 104 void *ptr, size_t size, u64 iova) 105 { 106 memcpy(iter->data, ptr, size); 107 108 iter->hdr->iova = cpu_to_le64(iova); 109 110 etnaviv_core_dump_header(iter, type, iter->data + size); 111 } 112 113 void etnaviv_core_dump(struct etnaviv_gem_submit *submit) 114 { 115 struct etnaviv_gpu *gpu = submit->gpu; 116 struct core_dump_iterator iter; 117 struct etnaviv_gem_object *obj; 118 unsigned int n_obj, n_bomap_pages; 119 size_t file_size, mmu_size; 120 __le64 *bomap, *bomap_start; 121 int i; 122 123 /* Only catch the first event, or when manually re-armed */ 124 if (!etnaviv_dump_core) 125 return; 126 etnaviv_dump_core = false; 127 128 mutex_lock(&gpu->mmu_context->lock); 129 130 mmu_size = etnaviv_iommu_dump_size(gpu->mmu_context); 131 132 /* We always dump registers, mmu, ring, hanging cmdbuf and end marker */ 133 n_obj = 5; 134 n_bomap_pages = 0; 135 file_size = ARRAY_SIZE(etnaviv_dump_registers) * 136 sizeof(struct etnaviv_dump_registers) + 137 mmu_size + gpu->buffer.size + submit->cmdbuf.size; 138 139 /* Add in the active buffer objects */ 140 for (i = 0; i < submit->nr_bos; i++) { 141 obj = submit->bos[i].obj; 142 file_size += obj->base.size; 143 n_bomap_pages += obj->base.size >> PAGE_SHIFT; 144 n_obj++; 145 } 146 147 /* If we have any buffer objects, add a bomap object */ 148 if (n_bomap_pages) { 149 file_size += n_bomap_pages * sizeof(__le64); 150 n_obj++; 151 } 152 153 /* Add the size of the headers */ 154 file_size += sizeof(*iter.hdr) * n_obj; 155 156 /* Allocate the file in vmalloc memory, it's likely to be big */ 157 iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY, 158 PAGE_KERNEL); 159 if (!iter.start) { 160 mutex_unlock(&gpu->mmu_context->lock); 161 dev_warn(gpu->dev, "failed to allocate devcoredump file\n"); 162 return; 163 } 164 165 /* Point the data member after the headers */ 166 iter.hdr = iter.start; 167 iter.data = &iter.hdr[n_obj]; 168 169 memset(iter.hdr, 0, iter.data - iter.start); 170 171 etnaviv_core_dump_registers(&iter, gpu); 172 etnaviv_core_dump_mmu(&iter, gpu->mmu_context, mmu_size); 173 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer.vaddr, 174 gpu->buffer.size, 175 etnaviv_cmdbuf_get_va(&gpu->buffer, 176 &gpu->mmu_context->cmdbuf_mapping)); 177 178 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD, 179 submit->cmdbuf.vaddr, submit->cmdbuf.size, 180 etnaviv_cmdbuf_get_va(&submit->cmdbuf, 181 &gpu->mmu_context->cmdbuf_mapping)); 182 183 mutex_unlock(&gpu->mmu_context->lock); 184 185 /* Reserve space for the bomap */ 186 if (n_bomap_pages) { 187 bomap_start = bomap = iter.data; 188 memset(bomap, 0, sizeof(*bomap) * n_bomap_pages); 189 etnaviv_core_dump_header(&iter, ETDUMP_BUF_BOMAP, 190 bomap + n_bomap_pages); 191 } else { 192 /* Silence warning */ 193 bomap_start = bomap = NULL; 194 } 195 196 for (i = 0; i < submit->nr_bos; i++) { 197 struct etnaviv_vram_mapping *vram; 198 struct page **pages; 199 void *vaddr; 200 201 obj = submit->bos[i].obj; 202 vram = submit->bos[i].mapping; 203 204 mutex_lock(&obj->lock); 205 pages = etnaviv_gem_get_pages(obj); 206 mutex_unlock(&obj->lock); 207 if (!IS_ERR(pages)) { 208 int j; 209 210 iter.hdr->data[0] = bomap - bomap_start; 211 212 for (j = 0; j < obj->base.size >> PAGE_SHIFT; j++) 213 *bomap++ = cpu_to_le64(page_to_phys(*pages++)); 214 } 215 216 iter.hdr->iova = cpu_to_le64(vram->iova); 217 218 vaddr = etnaviv_gem_vmap(&obj->base); 219 if (vaddr) 220 memcpy(iter.data, vaddr, obj->base.size); 221 222 etnaviv_core_dump_header(&iter, ETDUMP_BUF_BO, iter.data + 223 obj->base.size); 224 } 225 226 etnaviv_core_dump_header(&iter, ETDUMP_BUF_END, iter.data); 227 228 dev_coredumpv(gpu->dev, iter.start, iter.data - iter.start, GFP_KERNEL); 229 } 230