1 /* 2 * Copyright (C) 2015 Etnaviv Project 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 as published by 6 * the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License along with 14 * this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #include <linux/devcoredump.h> 18 #include "etnaviv_dump.h" 19 #include "etnaviv_gem.h" 20 #include "etnaviv_gpu.h" 21 #include "etnaviv_mmu.h" 22 #include "state.xml.h" 23 #include "state_hi.xml.h" 24 25 struct core_dump_iterator { 26 void *start; 27 struct etnaviv_dump_object_header *hdr; 28 void *data; 29 }; 30 31 static const unsigned short etnaviv_dump_registers[] = { 32 VIVS_HI_AXI_STATUS, 33 VIVS_HI_CLOCK_CONTROL, 34 VIVS_HI_IDLE_STATE, 35 VIVS_HI_AXI_CONFIG, 36 VIVS_HI_INTR_ENBL, 37 VIVS_HI_CHIP_IDENTITY, 38 VIVS_HI_CHIP_FEATURE, 39 VIVS_HI_CHIP_MODEL, 40 VIVS_HI_CHIP_REV, 41 VIVS_HI_CHIP_DATE, 42 VIVS_HI_CHIP_TIME, 43 VIVS_HI_CHIP_MINOR_FEATURE_0, 44 VIVS_HI_CACHE_CONTROL, 45 VIVS_HI_AXI_CONTROL, 46 VIVS_PM_POWER_CONTROLS, 47 VIVS_PM_MODULE_CONTROLS, 48 VIVS_PM_MODULE_STATUS, 49 VIVS_PM_PULSE_EATER, 50 VIVS_MC_MMU_FE_PAGE_TABLE, 51 VIVS_MC_MMU_TX_PAGE_TABLE, 52 VIVS_MC_MMU_PE_PAGE_TABLE, 53 VIVS_MC_MMU_PEZ_PAGE_TABLE, 54 VIVS_MC_MMU_RA_PAGE_TABLE, 55 VIVS_MC_DEBUG_MEMORY, 56 VIVS_MC_MEMORY_BASE_ADDR_RA, 57 VIVS_MC_MEMORY_BASE_ADDR_FE, 58 VIVS_MC_MEMORY_BASE_ADDR_TX, 59 VIVS_MC_MEMORY_BASE_ADDR_PEZ, 60 VIVS_MC_MEMORY_BASE_ADDR_PE, 61 VIVS_MC_MEMORY_TIMING_CONTROL, 62 VIVS_MC_BUS_CONFIG, 63 VIVS_FE_DMA_STATUS, 64 VIVS_FE_DMA_DEBUG_STATE, 65 VIVS_FE_DMA_ADDRESS, 66 VIVS_FE_DMA_LOW, 67 VIVS_FE_DMA_HIGH, 68 VIVS_FE_AUTO_FLUSH, 69 }; 70 71 static void etnaviv_core_dump_header(struct core_dump_iterator *iter, 72 u32 type, void *data_end) 73 { 74 struct etnaviv_dump_object_header *hdr = iter->hdr; 75 76 hdr->magic = cpu_to_le32(ETDUMP_MAGIC); 77 hdr->type = cpu_to_le32(type); 78 hdr->file_offset = cpu_to_le32(iter->data - iter->start); 79 hdr->file_size = cpu_to_le32(data_end - iter->data); 80 81 iter->hdr++; 82 iter->data += hdr->file_size; 83 } 84 85 static void etnaviv_core_dump_registers(struct core_dump_iterator *iter, 86 struct etnaviv_gpu *gpu) 87 { 88 struct etnaviv_dump_registers *reg = iter->data; 89 unsigned int i; 90 91 for (i = 0; i < ARRAY_SIZE(etnaviv_dump_registers); i++, reg++) { 92 reg->reg = etnaviv_dump_registers[i]; 93 reg->value = gpu_read(gpu, etnaviv_dump_registers[i]); 94 } 95 96 etnaviv_core_dump_header(iter, ETDUMP_BUF_REG, reg); 97 } 98 99 static void etnaviv_core_dump_mmu(struct core_dump_iterator *iter, 100 struct etnaviv_gpu *gpu, size_t mmu_size) 101 { 102 etnaviv_iommu_dump(gpu->mmu, iter->data); 103 104 etnaviv_core_dump_header(iter, ETDUMP_BUF_MMU, iter->data + mmu_size); 105 } 106 107 static void etnaviv_core_dump_mem(struct core_dump_iterator *iter, u32 type, 108 void *ptr, size_t size, u64 iova) 109 { 110 memcpy(iter->data, ptr, size); 111 112 iter->hdr->iova = cpu_to_le64(iova); 113 114 etnaviv_core_dump_header(iter, type, iter->data + size); 115 } 116 117 void etnaviv_core_dump(struct etnaviv_gpu *gpu) 118 { 119 struct core_dump_iterator iter; 120 struct etnaviv_vram_mapping *vram; 121 struct etnaviv_gem_object *obj; 122 struct etnaviv_cmdbuf *cmd; 123 unsigned int n_obj, n_bomap_pages; 124 size_t file_size, mmu_size; 125 __le64 *bomap, *bomap_start; 126 127 mmu_size = etnaviv_iommu_dump_size(gpu->mmu); 128 129 /* We always dump registers, mmu, ring and end marker */ 130 n_obj = 4; 131 n_bomap_pages = 0; 132 file_size = ARRAY_SIZE(etnaviv_dump_registers) * 133 sizeof(struct etnaviv_dump_registers) + 134 mmu_size + gpu->buffer->size; 135 136 /* Add in the active command buffers */ 137 list_for_each_entry(cmd, &gpu->active_cmd_list, node) { 138 file_size += cmd->size; 139 n_obj++; 140 } 141 142 /* Add in the active buffer objects */ 143 list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) { 144 if (!vram->use) 145 continue; 146 147 obj = vram->object; 148 file_size += obj->base.size; 149 n_bomap_pages += obj->base.size >> PAGE_SHIFT; 150 n_obj++; 151 } 152 153 /* If we have any buffer objects, add a bomap object */ 154 if (n_bomap_pages) { 155 file_size += n_bomap_pages * sizeof(__le64); 156 n_obj++; 157 } 158 159 /* Add the size of the headers */ 160 file_size += sizeof(*iter.hdr) * n_obj; 161 162 /* Allocate the file in vmalloc memory, it's likely to be big */ 163 iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_HIGHMEM | 164 __GFP_NOWARN | __GFP_NORETRY, PAGE_KERNEL); 165 if (!iter.start) { 166 dev_warn(gpu->dev, "failed to allocate devcoredump file\n"); 167 return; 168 } 169 170 /* Point the data member after the headers */ 171 iter.hdr = iter.start; 172 iter.data = &iter.hdr[n_obj]; 173 174 memset(iter.hdr, 0, iter.data - iter.start); 175 176 etnaviv_core_dump_registers(&iter, gpu); 177 etnaviv_core_dump_mmu(&iter, gpu, mmu_size); 178 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer->vaddr, 179 gpu->buffer->size, 180 etnaviv_iommu_get_cmdbuf_va(gpu, gpu->buffer)); 181 182 list_for_each_entry(cmd, &gpu->active_cmd_list, node) 183 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD, cmd->vaddr, 184 cmd->size, 185 etnaviv_iommu_get_cmdbuf_va(gpu, cmd)); 186 187 /* Reserve space for the bomap */ 188 if (n_bomap_pages) { 189 bomap_start = bomap = iter.data; 190 memset(bomap, 0, sizeof(*bomap) * n_bomap_pages); 191 etnaviv_core_dump_header(&iter, ETDUMP_BUF_BOMAP, 192 bomap + n_bomap_pages); 193 } else { 194 /* Silence warning */ 195 bomap_start = bomap = NULL; 196 } 197 198 list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) { 199 struct page **pages; 200 void *vaddr; 201 202 if (vram->use == 0) 203 continue; 204 205 obj = vram->object; 206 207 mutex_lock(&obj->lock); 208 pages = etnaviv_gem_get_pages(obj); 209 mutex_unlock(&obj->lock); 210 if (pages) { 211 int j; 212 213 iter.hdr->data[0] = bomap - bomap_start; 214 215 for (j = 0; j < obj->base.size >> PAGE_SHIFT; j++) 216 *bomap++ = cpu_to_le64(page_to_phys(*pages++)); 217 } 218 219 iter.hdr->iova = cpu_to_le64(vram->iova); 220 221 vaddr = etnaviv_gem_vmap(&obj->base); 222 if (vaddr) 223 memcpy(iter.data, vaddr, obj->base.size); 224 225 etnaviv_core_dump_header(&iter, ETDUMP_BUF_BO, iter.data + 226 obj->base.size); 227 } 228 229 etnaviv_core_dump_header(&iter, ETDUMP_BUF_END, iter.data); 230 231 dev_coredumpv(gpu->dev, iter.start, iter.data - iter.start, GFP_KERNEL); 232 } 233