[PATCH v2 09/14] drm/etnaviv: add GPU core dump functionality
Lucas Stach
l.stach at pengutronix.de
Wed Dec 9 03:48:22 PST 2015
From: The etnaviv authors <dri-devel at lists.freedesktop.org>
This adds functionality to allow post-portem GPU analysis.
Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
Signed-off-by: Russell King <rmk+kernel at arm.linux.org.uk>
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
drivers/gpu/drm/etnaviv/etnaviv_dump.c | 227 +++++++++++++++++++++++++++++++++
drivers/gpu/drm/etnaviv/etnaviv_dump.h | 54 ++++++++
2 files changed, 281 insertions(+)
create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_dump.c
create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_dump.h
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.c b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
new file mode 100644
index 000000000000..bf8fa859e8be
--- /dev/null
+++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2015 Etnaviv Project
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/devcoredump.h>
+#include "etnaviv_dump.h"
+#include "etnaviv_gem.h"
+#include "etnaviv_gpu.h"
+#include "etnaviv_mmu.h"
+#include "state.xml.h"
+#include "state_hi.xml.h"
+
+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_gpu *gpu, size_t mmu_size)
+{
+ etnaviv_iommu_dump(gpu->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_gpu *gpu)
+{
+ struct core_dump_iterator iter;
+ struct etnaviv_vram_mapping *vram;
+ struct etnaviv_gem_object *obj;
+ struct etnaviv_cmdbuf *cmd;
+ unsigned int n_obj, n_bomap_pages;
+ size_t file_size, mmu_size;
+ __le64 *bomap, *bomap_start;
+
+ mmu_size = etnaviv_iommu_dump_size(gpu->mmu);
+
+ /* We always dump registers, mmu, ring and end marker */
+ n_obj = 4;
+ n_bomap_pages = 0;
+ file_size = ARRAY_SIZE(etnaviv_dump_registers) *
+ sizeof(struct etnaviv_dump_registers) +
+ mmu_size + gpu->buffer->size;
+
+ /* Add in the active command buffers */
+ list_for_each_entry(cmd, &gpu->active_cmd_list, node) {
+ file_size += cmd->size;
+ n_obj++;
+ }
+
+ /* Add in the active buffer objects */
+ list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) {
+ if (!vram->use)
+ continue;
+
+ obj = vram->object;
+ 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);
+ if (!iter.start) {
+ 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_size);
+ etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer->vaddr,
+ gpu->buffer->size, gpu->buffer->paddr);
+
+ list_for_each_entry(cmd, &gpu->active_cmd_list, node)
+ etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD, cmd->vaddr,
+ cmd->size, cmd->paddr);
+
+ /* 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;
+ }
+
+ list_for_each_entry(vram, &gpu->mmu->mappings, mmu_node) {
+ struct page **pages;
+ void *vaddr;
+
+ if (vram->use == 0)
+ continue;
+
+ obj = vram->object;
+
+ pages = etnaviv_gem_get_pages(obj);
+ if (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_vaddr(&obj->base);
+ if (vaddr && !IS_ERR(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);
+}
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.h b/drivers/gpu/drm/etnaviv/etnaviv_dump.h
new file mode 100644
index 000000000000..97f2f8db9133
--- /dev/null
+++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 Etnaviv Project
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Etnaviv devcoredump file definitions
+ */
+#ifndef ETNAVIV_DUMP_H
+#define ETNAVIV_DUMP_H
+
+#include <linux/types.h>
+
+enum {
+ ETDUMP_MAGIC = 0x414e5445,
+ ETDUMP_BUF_REG = 0,
+ ETDUMP_BUF_MMU,
+ ETDUMP_BUF_RING,
+ ETDUMP_BUF_CMD,
+ ETDUMP_BUF_BOMAP,
+ ETDUMP_BUF_BO,
+ ETDUMP_BUF_END,
+};
+
+struct etnaviv_dump_object_header {
+ __le32 magic;
+ __le32 type;
+ __le32 file_offset;
+ __le32 file_size;
+ __le64 iova;
+ __le32 data[2];
+};
+
+/* Registers object, an array of these */
+struct etnaviv_dump_registers {
+ __le32 reg;
+ __le32 value;
+};
+
+#ifdef __KERNEL__
+struct etnaviv_gpu;
+void etnaviv_core_dump(struct etnaviv_gpu *gpu);
+#endif
+
+#endif
--
2.6.2
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