245 lines
6.2 KiB
C
245 lines
6.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2015-2018 Etnaviv Project
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*/
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#include <linux/devcoredump.h>
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#include "etnaviv_cmdbuf.h"
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#include "etnaviv_dump.h"
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#include "etnaviv_gem.h"
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#include "etnaviv_gpu.h"
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#include "etnaviv_mmu.h"
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#include "etnaviv_sched.h"
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#include "state.xml.h"
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#include "state_hi.xml.h"
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static bool etnaviv_dump_core = true;
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module_param_named(dump_core, etnaviv_dump_core, bool, 0600);
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struct core_dump_iterator {
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void *start;
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struct etnaviv_dump_object_header *hdr;
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void *data;
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};
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static const unsigned short etnaviv_dump_registers[] = {
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VIVS_HI_AXI_STATUS,
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VIVS_HI_CLOCK_CONTROL,
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VIVS_HI_IDLE_STATE,
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VIVS_HI_AXI_CONFIG,
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VIVS_HI_INTR_ENBL,
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VIVS_HI_CHIP_IDENTITY,
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VIVS_HI_CHIP_FEATURE,
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VIVS_HI_CHIP_MODEL,
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VIVS_HI_CHIP_REV,
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VIVS_HI_CHIP_DATE,
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VIVS_HI_CHIP_TIME,
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VIVS_HI_CHIP_MINOR_FEATURE_0,
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VIVS_HI_CACHE_CONTROL,
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VIVS_HI_AXI_CONTROL,
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VIVS_PM_POWER_CONTROLS,
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VIVS_PM_MODULE_CONTROLS,
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VIVS_PM_MODULE_STATUS,
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VIVS_PM_PULSE_EATER,
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VIVS_MC_MMU_FE_PAGE_TABLE,
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VIVS_MC_MMU_TX_PAGE_TABLE,
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VIVS_MC_MMU_PE_PAGE_TABLE,
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VIVS_MC_MMU_PEZ_PAGE_TABLE,
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VIVS_MC_MMU_RA_PAGE_TABLE,
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VIVS_MC_DEBUG_MEMORY,
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VIVS_MC_MEMORY_BASE_ADDR_RA,
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VIVS_MC_MEMORY_BASE_ADDR_FE,
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VIVS_MC_MEMORY_BASE_ADDR_TX,
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VIVS_MC_MEMORY_BASE_ADDR_PEZ,
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VIVS_MC_MEMORY_BASE_ADDR_PE,
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VIVS_MC_MEMORY_TIMING_CONTROL,
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VIVS_MC_BUS_CONFIG,
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VIVS_FE_DMA_STATUS,
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VIVS_FE_DMA_DEBUG_STATE,
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VIVS_FE_DMA_ADDRESS,
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VIVS_FE_DMA_LOW,
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VIVS_FE_DMA_HIGH,
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VIVS_FE_AUTO_FLUSH,
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};
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static void etnaviv_core_dump_header(struct core_dump_iterator *iter,
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u32 type, void *data_end)
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{
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struct etnaviv_dump_object_header *hdr = iter->hdr;
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hdr->magic = cpu_to_le32(ETDUMP_MAGIC);
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hdr->type = cpu_to_le32(type);
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hdr->file_offset = cpu_to_le32(iter->data - iter->start);
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hdr->file_size = cpu_to_le32(data_end - iter->data);
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iter->hdr++;
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iter->data += hdr->file_size;
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}
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static void etnaviv_core_dump_registers(struct core_dump_iterator *iter,
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struct etnaviv_gpu *gpu)
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{
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struct etnaviv_dump_registers *reg = iter->data;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(etnaviv_dump_registers); i++, reg++) {
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reg->reg = etnaviv_dump_registers[i];
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reg->value = gpu_read(gpu, etnaviv_dump_registers[i]);
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}
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etnaviv_core_dump_header(iter, ETDUMP_BUF_REG, reg);
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}
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static void etnaviv_core_dump_mmu(struct core_dump_iterator *iter,
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struct etnaviv_gpu *gpu, size_t mmu_size)
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{
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etnaviv_iommu_dump(gpu->mmu, iter->data);
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etnaviv_core_dump_header(iter, ETDUMP_BUF_MMU, iter->data + mmu_size);
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}
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static void etnaviv_core_dump_mem(struct core_dump_iterator *iter, u32 type,
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void *ptr, size_t size, u64 iova)
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{
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memcpy(iter->data, ptr, size);
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iter->hdr->iova = cpu_to_le64(iova);
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etnaviv_core_dump_header(iter, type, iter->data + size);
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}
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void etnaviv_core_dump(struct etnaviv_gpu *gpu)
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{
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struct core_dump_iterator iter;
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struct etnaviv_vram_mapping *vram;
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struct etnaviv_gem_object *obj;
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struct etnaviv_gem_submit *submit;
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struct drm_sched_job *s_job;
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unsigned int n_obj, n_bomap_pages;
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size_t file_size, mmu_size;
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__le64 *bomap, *bomap_start;
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/* Only catch the first event, or when manually re-armed */
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if (!etnaviv_dump_core)
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return;
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etnaviv_dump_core = false;
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mutex_lock(&gpu->mmu->lock);
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mmu_size = etnaviv_iommu_dump_size(gpu->mmu);
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/* We always dump registers, mmu, ring and end marker */
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n_obj = 4;
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n_bomap_pages = 0;
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file_size = ARRAY_SIZE(etnaviv_dump_registers) *
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sizeof(struct etnaviv_dump_registers) +
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mmu_size + gpu->buffer.size;
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/* Add in the active command buffers */
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spin_lock(&gpu->sched.job_list_lock);
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list_for_each_entry(s_job, &gpu->sched.ring_mirror_list, node) {
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submit = to_etnaviv_submit(s_job);
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file_size += submit->cmdbuf.size;
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n_obj++;
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}
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spin_unlock(&gpu->sched.job_list_lock);
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/* Add in the active buffer objects */
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list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) {
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if (!vram->use)
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continue;
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obj = vram->object;
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file_size += obj->base.size;
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n_bomap_pages += obj->base.size >> PAGE_SHIFT;
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n_obj++;
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}
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/* If we have any buffer objects, add a bomap object */
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if (n_bomap_pages) {
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file_size += n_bomap_pages * sizeof(__le64);
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n_obj++;
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}
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/* Add the size of the headers */
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file_size += sizeof(*iter.hdr) * n_obj;
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/* Allocate the file in vmalloc memory, it's likely to be big */
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iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY,
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PAGE_KERNEL);
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if (!iter.start) {
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mutex_unlock(&gpu->mmu->lock);
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dev_warn(gpu->dev, "failed to allocate devcoredump file\n");
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return;
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}
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/* Point the data member after the headers */
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iter.hdr = iter.start;
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iter.data = &iter.hdr[n_obj];
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memset(iter.hdr, 0, iter.data - iter.start);
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etnaviv_core_dump_registers(&iter, gpu);
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etnaviv_core_dump_mmu(&iter, gpu, mmu_size);
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etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer.vaddr,
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gpu->buffer.size,
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etnaviv_cmdbuf_get_va(&gpu->buffer));
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spin_lock(&gpu->sched.job_list_lock);
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list_for_each_entry(s_job, &gpu->sched.ring_mirror_list, node) {
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submit = to_etnaviv_submit(s_job);
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etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD,
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submit->cmdbuf.vaddr, submit->cmdbuf.size,
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etnaviv_cmdbuf_get_va(&submit->cmdbuf));
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}
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spin_unlock(&gpu->sched.job_list_lock);
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/* Reserve space for the bomap */
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if (n_bomap_pages) {
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bomap_start = bomap = iter.data;
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memset(bomap, 0, sizeof(*bomap) * n_bomap_pages);
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etnaviv_core_dump_header(&iter, ETDUMP_BUF_BOMAP,
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bomap + n_bomap_pages);
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} else {
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/* Silence warning */
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bomap_start = bomap = NULL;
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}
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list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) {
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struct page **pages;
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void *vaddr;
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if (vram->use == 0)
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continue;
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obj = vram->object;
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mutex_lock(&obj->lock);
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pages = etnaviv_gem_get_pages(obj);
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mutex_unlock(&obj->lock);
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if (!IS_ERR(pages)) {
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int j;
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iter.hdr->data[0] = bomap - bomap_start;
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for (j = 0; j < obj->base.size >> PAGE_SHIFT; j++)
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*bomap++ = cpu_to_le64(page_to_phys(*pages++));
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}
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iter.hdr->iova = cpu_to_le64(vram->iova);
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vaddr = etnaviv_gem_vmap(&obj->base);
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if (vaddr)
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memcpy(iter.data, vaddr, obj->base.size);
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etnaviv_core_dump_header(&iter, ETDUMP_BUF_BO, iter.data +
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obj->base.size);
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}
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mutex_unlock(&gpu->mmu->lock);
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etnaviv_core_dump_header(&iter, ETDUMP_BUF_END, iter.data);
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dev_coredumpv(gpu->dev, iter.start, iter.data - iter.start, GFP_KERNEL);
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}
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