// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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/*
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*
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* (C) COPYRIGHT 2019-2022 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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#include "mali_kbase_csf_kcpu_debugfs.h"
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#include <mali_kbase.h>
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#include <linux/seq_file.h>
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#if IS_ENABLED(CONFIG_SYNC_FILE)
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#include "mali_kbase_sync.h"
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#endif
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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/**
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* kbasep_csf_kcpu_debugfs_print_cqs_waits() - Print additional info for KCPU
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* queues blocked on CQS wait commands.
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*
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* @file: The seq_file to print to
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* @kctx: The context of the KCPU queue
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* @waits: Pointer to the KCPU CQS wait command info
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*/
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static void kbasep_csf_kcpu_debugfs_print_cqs_waits(struct seq_file *file,
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struct kbase_context *kctx,
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struct kbase_kcpu_command_cqs_wait_info *waits)
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{
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unsigned int i;
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for (i = 0; i < waits->nr_objs; i++) {
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struct kbase_vmap_struct *mapping;
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u32 val;
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char const *msg;
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u32 *const cpu_ptr = (u32 *)kbase_phy_alloc_mapping_get(kctx,
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waits->objs[i].addr, &mapping);
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if (!cpu_ptr)
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return;
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val = *cpu_ptr;
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kbase_phy_alloc_mapping_put(kctx, mapping);
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msg = (waits->inherit_err_flags && (1U << i)) ? "true" :
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"false";
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seq_printf(file, " %llx(%u > %u, inherit_err: %s), ",
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waits->objs[i].addr, val, waits->objs[i].val, msg);
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}
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}
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/**
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* kbasep_csf_kcpu_debugfs_print_queue() - Print debug data for a KCPU queue
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*
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* @file: The seq_file to print to
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* @kctx: The context of the KCPU queue
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* @queue: Pointer to the KCPU queue
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*/
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static void kbasep_csf_kcpu_debugfs_print_queue(struct seq_file *file,
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struct kbase_context *kctx,
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struct kbase_kcpu_command_queue *queue)
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{
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if (WARN_ON(!queue))
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return;
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lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
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seq_printf(file, "%16u, %11u, %7u, %13llu %8u",
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queue->num_pending_cmds, queue->enqueue_failed,
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queue->command_started ? 1 : 0,
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queue->fence_context, queue->fence_seqno);
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if (queue->command_started) {
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struct kbase_kcpu_command *cmd =
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&queue->commands[queue->start_offset];
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switch (cmd->type) {
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#if IS_ENABLED(CONFIG_SYNC_FILE)
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case BASE_KCPU_COMMAND_TYPE_FENCE_WAIT:
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{
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struct kbase_sync_fence_info info;
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kbase_sync_fence_info_get(cmd->info.fence.fence, &info);
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seq_printf(file, ", Fence %pK %s %s",
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info.fence, info.name,
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kbase_sync_status_string(info.status));
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break;
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}
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#endif
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case BASE_KCPU_COMMAND_TYPE_CQS_WAIT:
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seq_puts(file, ", CQS ");
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kbasep_csf_kcpu_debugfs_print_cqs_waits(file, kctx,
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&cmd->info.cqs_wait);
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break;
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default:
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seq_puts(file, ", U, Unknown blocking command");
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break;
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}
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}
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seq_puts(file, "\n");
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}
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/**
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* kbasep_csf_kcpu_debugfs_show() - Print the KCPU queues debug information
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*
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* @file: The seq_file for printing to
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* @data: The debugfs dentry private data, a pointer to kbase_context
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*
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* Return: Negative error code or 0 on success.
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*/
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static int kbasep_csf_kcpu_debugfs_show(struct seq_file *file, void *data)
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{
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struct kbase_context *kctx = file->private;
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unsigned long idx;
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seq_printf(file, "MALI_CSF_KCPU_DEBUGFS_VERSION: v%u\n", MALI_CSF_KCPU_DEBUGFS_VERSION);
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seq_puts(file, "Queue Idx(err-mode), Pending Commands, Enqueue err, Blocked, Fence context & seqno, (Wait Type, Additional info)\n");
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mutex_lock(&kctx->csf.kcpu_queues.lock);
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idx = find_first_bit(kctx->csf.kcpu_queues.in_use,
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KBASEP_MAX_KCPU_QUEUES);
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while (idx < KBASEP_MAX_KCPU_QUEUES) {
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struct kbase_kcpu_command_queue *queue =
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kctx->csf.kcpu_queues.array[idx];
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seq_printf(file, "%9lu( %s ), ", idx,
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queue->has_error ? "InErr" : "NoErr");
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kbasep_csf_kcpu_debugfs_print_queue(file, kctx,
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kctx->csf.kcpu_queues.array[idx]);
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idx = find_next_bit(kctx->csf.kcpu_queues.in_use,
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KBASEP_MAX_KCPU_QUEUES, idx + 1);
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}
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mutex_unlock(&kctx->csf.kcpu_queues.lock);
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return 0;
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}
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static int kbasep_csf_kcpu_debugfs_open(struct inode *in, struct file *file)
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{
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return single_open(file, kbasep_csf_kcpu_debugfs_show, in->i_private);
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}
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static const struct file_operations kbasep_csf_kcpu_debugfs_fops = {
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.open = kbasep_csf_kcpu_debugfs_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void kbase_csf_kcpu_debugfs_init(struct kbase_context *kctx)
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{
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struct dentry *file;
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const mode_t mode = 0444;
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if (WARN_ON(!kctx || IS_ERR_OR_NULL(kctx->kctx_dentry)))
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return;
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file = debugfs_create_file("kcpu_queues", mode, kctx->kctx_dentry,
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kctx, &kbasep_csf_kcpu_debugfs_fops);
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if (IS_ERR_OR_NULL(file)) {
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dev_warn(kctx->kbdev->dev,
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"Unable to create KCPU debugfs entry");
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}
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}
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#else
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/*
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* Stub functions for when debugfs is disabled
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*/
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void kbase_csf_kcpu_debugfs_init(struct kbase_context *kctx)
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{
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}
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#endif /* CONFIG_DEBUG_FS */
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