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/*
*
* (C) COPYRIGHT ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <linux/seq_file.h>
#include <mali_kbase_jd_debugfs.h>
#ifdef CONFIG_DEBUG_FS
/**
* @brief Show callback for the @c JD atoms debugfs file.
*
* This function is called to get the contents of the @c JD atoms debugfs file.
* This is a report of all atoms managed by kbase_jd_context::atoms .
*
* @param sfile The debugfs entry
* @param data Data associated with the entry
*
* @return 0 if successfully prints data in debugfs entry file, failure
* otherwise
*/
static int kbasep_jd_debugfs_atoms_show(struct seq_file *sfile, void *data)
{
struct kbase_context *kctx = sfile->private;
struct kbase_jd_atom *atoms;
unsigned long irq_flags;
int i;
KBASE_DEBUG_ASSERT(kctx != NULL);
/* Print table heading */
seq_puts(sfile, "atom id,core reqs,status,coreref status,predeps,start time,time on gpu\n");
atoms = kctx->jctx.atoms;
/* General atom states */
mutex_lock(&kctx->jctx.lock);
/* JS-related states */
spin_lock_irqsave(&kctx->kbdev->js_data.runpool_irq.lock, irq_flags);
for (i = 0; i != BASE_JD_ATOM_COUNT; ++i) {
struct kbase_jd_atom *atom = &atoms[i];
s64 start_timestamp = 0;
if (atom->status == KBASE_JD_ATOM_STATE_UNUSED)
continue;
/* start_timestamp is cleared as soon as the atom leaves UNUSED state
* and set before a job is submitted to the h/w, a non-zero value means
* it is valid */
if (ktime_to_ns(atom->start_timestamp))
start_timestamp = ktime_to_ns(
ktime_sub(ktime_get(), atom->start_timestamp));
seq_printf(sfile,
"%i,%u,%u,%u,%lu %lu,%lli,%llu\n",
i, atom->core_req, atom->status, atom->coreref_state,
atom->dep[0].atom ? atom->dep[0].atom - atoms : 0,
atom->dep[1].atom ? atom->dep[1].atom - atoms : 0,
(signed long long)start_timestamp,
(unsigned long long)(atom->time_spent_us ?
atom->time_spent_us * 1000 : start_timestamp)
);
}
spin_unlock_irqrestore(&kctx->kbdev->js_data.runpool_irq.lock, irq_flags);
mutex_unlock(&kctx->jctx.lock);
return 0;
}
/**
* @brief File operations related to debugfs entry for atoms
*/
static int kbasep_jd_debugfs_atoms_open(struct inode *in, struct file *file)
{
return single_open(file, kbasep_jd_debugfs_atoms_show, in->i_private);
}
static const struct file_operations kbasep_jd_debugfs_atoms_fops = {
.open = kbasep_jd_debugfs_atoms_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
int kbasep_jd_debugfs_init(struct kbase_device *kbdev)
{
kbdev->jd_directory = debugfs_create_dir(
"jd", kbdev->mali_debugfs_directory);
if (IS_ERR(kbdev->jd_directory)) {
dev_err(kbdev->dev, "Couldn't create mali jd debugfs directory\n");
goto err;
}
return 0;
err:
return -1;
}
void kbasep_jd_debugfs_term(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
if (!IS_ERR(kbdev->jd_directory))
debugfs_remove_recursive(kbdev->jd_directory);
}
int kbasep_jd_debugfs_ctx_add(struct kbase_context *kctx)
{
/* Refer below for format string, %u is 10 chars max */
char dir_name[10 * 2 + 2];
KBASE_DEBUG_ASSERT(kctx != NULL);
/* Create per-context directory */
scnprintf(dir_name, sizeof(dir_name), "%u_%u", kctx->pid, kctx->id);
kctx->jd_ctx_dir = debugfs_create_dir(dir_name, kctx->kbdev->jd_directory);
if (IS_ERR(kctx->jd_ctx_dir))
goto err;
/* Expose all atoms */
if (IS_ERR(debugfs_create_file("atoms", S_IRUGO,
kctx->jd_ctx_dir, kctx, &kbasep_jd_debugfs_atoms_fops)))
goto err_jd_ctx_dir;
return 0;
err_jd_ctx_dir:
debugfs_remove_recursive(kctx->jd_ctx_dir);
err:
return -1;
}
void kbasep_jd_debugfs_ctx_remove(struct kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx != NULL);
if (!IS_ERR(kctx->jd_ctx_dir))
debugfs_remove_recursive(kctx->jd_ctx_dir);
}
#else /* CONFIG_DEBUG_FS */
/**
* @brief Stub functions for when debugfs is disabled
*/
int kbasep_jd_debugfs_init(struct kbase_device *kbdev)
{
return 0;
}
void kbasep_jd_debugfs_term(struct kbase_device *kbdev)
{
}
int kbasep_jd_debugfs_ctx_add(struct kbase_context *ctx)
{
return 0;
}
void kbasep_jd_debugfs_ctx_remove(struct kbase_context *ctx)
{
}
#endif /* CONFIG_DEBUG_FS */
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