diff options
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_dump.c')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_dump.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.c b/drivers/gpu/drm/etnaviv/etnaviv_dump.c new file mode 100644 index 000000000..7b57d01ba --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.c @@ -0,0 +1,229 @@ +// 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(&submit->mmu_context->lock); + + mmu_size = etnaviv_iommu_dump_size(submit->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); + if (!iter.start) { + mutex_unlock(&submit->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, submit->mmu_context, mmu_size); + etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer.vaddr, + gpu->buffer.size, + etnaviv_cmdbuf_get_va(&gpu->buffer, + &submit->mmu_context->cmdbuf_mapping)); + + etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD, + submit->cmdbuf.vaddr, submit->cmdbuf.size, + etnaviv_cmdbuf_get_va(&submit->cmdbuf, + &submit->mmu_context->cmdbuf_mapping)); + + mutex_unlock(&submit->mmu_context->lock); + + /* 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); + } + + etnaviv_core_dump_header(&iter, ETDUMP_BUF_END, iter.data); + + dev_coredumpv(gpu->dev, iter.start, iter.data - iter.start, GFP_KERNEL); +} |