160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
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*/
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#include <linux/types.h>
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#include <linux/debugfs.h>
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#include <drm/drm_debugfs.h>
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#include <drm/drm_file.h>
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#include <drm/drm_print.h>
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#include "a5xx_gpu.h"
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static void pfp_print(struct msm_gpu *gpu, struct drm_printer *p)
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{
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int i;
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drm_printf(p, "PFP state:\n");
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for (i = 0; i < 36; i++) {
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gpu_write(gpu, REG_A5XX_CP_PFP_STAT_ADDR, i);
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drm_printf(p, " %02x: %08x\n", i,
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gpu_read(gpu, REG_A5XX_CP_PFP_STAT_DATA));
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}
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}
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static void me_print(struct msm_gpu *gpu, struct drm_printer *p)
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{
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int i;
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drm_printf(p, "ME state:\n");
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for (i = 0; i < 29; i++) {
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gpu_write(gpu, REG_A5XX_CP_ME_STAT_ADDR, i);
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drm_printf(p, " %02x: %08x\n", i,
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gpu_read(gpu, REG_A5XX_CP_ME_STAT_DATA));
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}
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}
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static void meq_print(struct msm_gpu *gpu, struct drm_printer *p)
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{
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int i;
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drm_printf(p, "MEQ state:\n");
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gpu_write(gpu, REG_A5XX_CP_MEQ_DBG_ADDR, 0);
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for (i = 0; i < 64; i++) {
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drm_printf(p, " %02x: %08x\n", i,
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gpu_read(gpu, REG_A5XX_CP_MEQ_DBG_DATA));
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}
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}
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static void roq_print(struct msm_gpu *gpu, struct drm_printer *p)
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{
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int i;
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drm_printf(p, "ROQ state:\n");
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gpu_write(gpu, REG_A5XX_CP_ROQ_DBG_ADDR, 0);
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for (i = 0; i < 512 / 4; i++) {
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uint32_t val[4];
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int j;
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for (j = 0; j < 4; j++)
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val[j] = gpu_read(gpu, REG_A5XX_CP_ROQ_DBG_DATA);
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drm_printf(p, " %02x: %08x %08x %08x %08x\n", i,
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val[0], val[1], val[2], val[3]);
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}
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}
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static int show(struct seq_file *m, void *arg)
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{
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struct drm_info_node *node = (struct drm_info_node *) m->private;
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struct drm_device *dev = node->minor->dev;
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struct msm_drm_private *priv = dev->dev_private;
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struct drm_printer p = drm_seq_file_printer(m);
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void (*show)(struct msm_gpu *gpu, struct drm_printer *p) =
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node->info_ent->data;
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show(priv->gpu, &p);
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return 0;
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}
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#define ENT(n) { .name = #n, .show = show, .data = n ##_print }
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static struct drm_info_list a5xx_debugfs_list[] = {
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ENT(pfp),
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ENT(me),
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ENT(meq),
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ENT(roq),
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};
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/* for debugfs files that can be written to, we can't use drm helper: */
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static int
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reset_set(void *data, u64 val)
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{
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struct drm_device *dev = data;
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struct msm_drm_private *priv = dev->dev_private;
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struct msm_gpu *gpu = priv->gpu;
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struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
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struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu);
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if (!capable(CAP_SYS_ADMIN))
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return -EINVAL;
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/* TODO do we care about trying to make sure the GPU is idle?
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* Since this is just a debug feature limited to CAP_SYS_ADMIN,
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* maybe it is fine to let the user keep both pieces if they
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* try to reset an active GPU.
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*/
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mutex_lock(&gpu->lock);
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release_firmware(adreno_gpu->fw[ADRENO_FW_PM4]);
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adreno_gpu->fw[ADRENO_FW_PM4] = NULL;
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release_firmware(adreno_gpu->fw[ADRENO_FW_PFP]);
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adreno_gpu->fw[ADRENO_FW_PFP] = NULL;
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if (a5xx_gpu->pm4_bo) {
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msm_gem_unpin_iova(a5xx_gpu->pm4_bo, gpu->aspace);
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drm_gem_object_put(a5xx_gpu->pm4_bo);
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a5xx_gpu->pm4_bo = NULL;
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}
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if (a5xx_gpu->pfp_bo) {
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msm_gem_unpin_iova(a5xx_gpu->pfp_bo, gpu->aspace);
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drm_gem_object_put(a5xx_gpu->pfp_bo);
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a5xx_gpu->pfp_bo = NULL;
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}
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gpu->needs_hw_init = true;
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pm_runtime_get_sync(&gpu->pdev->dev);
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gpu->funcs->recover(gpu);
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pm_runtime_put_sync(&gpu->pdev->dev);
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mutex_unlock(&gpu->lock);
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return 0;
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}
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DEFINE_DEBUGFS_ATTRIBUTE(reset_fops, NULL, reset_set, "%llx\n");
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void a5xx_debugfs_init(struct msm_gpu *gpu, struct drm_minor *minor)
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{
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struct drm_device *dev;
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if (!minor)
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return;
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dev = minor->dev;
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drm_debugfs_create_files(a5xx_debugfs_list,
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ARRAY_SIZE(a5xx_debugfs_list),
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minor->debugfs_root, minor);
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debugfs_create_file_unsafe("reset", S_IWUGO, minor->debugfs_root, dev,
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&reset_fops);
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}
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