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/* Copyright (c) 2002,2008-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*
*/
#include <linux/module.h>
#include <linux/debugfs.h>
#include "kgsl.h"
#include "kgsl_device.h"
#include "kgsl_sharedmem.h"
/*default log levels is error for everything*/
#define KGSL_LOG_LEVEL_MAX 7
struct dentry *kgsl_debugfs_dir;
struct dentry *proc_d_debugfs;
static inline int kgsl_log_set(unsigned int *log_val, void *data, u64 val)
{
*log_val = min((unsigned int)val, (unsigned int)KGSL_LOG_LEVEL_MAX);
return 0;
}
#define KGSL_DEBUGFS_LOG(__log) \
static int __log ## _set(void *data, u64 val) \
{ \
struct kgsl_device *device = data; \
return kgsl_log_set(&device->__log, data, val); \
} \
static int __log ## _get(void *data, u64 *val) \
{ \
struct kgsl_device *device = data; \
*val = device->__log; \
return 0; \
} \
DEFINE_SIMPLE_ATTRIBUTE(__log ## _fops, \
__log ## _get, __log ## _set, "%llu\n"); \
KGSL_DEBUGFS_LOG(drv_log);
KGSL_DEBUGFS_LOG(cmd_log);
KGSL_DEBUGFS_LOG(ctxt_log);
KGSL_DEBUGFS_LOG(mem_log);
KGSL_DEBUGFS_LOG(pwr_log);
void kgsl_device_debugfs_init(struct kgsl_device *device)
{
if (kgsl_debugfs_dir && !IS_ERR(kgsl_debugfs_dir))
device->d_debugfs = debugfs_create_dir(device->name,
kgsl_debugfs_dir);
if (!device->d_debugfs || IS_ERR(device->d_debugfs))
return;
debugfs_create_file("log_level_cmd", 0644, device->d_debugfs, device,
&cmd_log_fops);
debugfs_create_file("log_level_ctxt", 0644, device->d_debugfs, device,
&ctxt_log_fops);
debugfs_create_file("log_level_drv", 0644, device->d_debugfs, device,
&drv_log_fops);
debugfs_create_file("log_level_mem", 0644, device->d_debugfs, device,
&mem_log_fops);
debugfs_create_file("log_level_pwr", 0644, device->d_debugfs, device,
&pwr_log_fops);
}
static const char * const memtype_strings[] = {
"gpumem",
"pmem",
"ashmem",
"usermap",
"ion",
};
static const char *memtype_str(int memtype)
{
if (memtype < ARRAY_SIZE(memtype_strings))
return memtype_strings[memtype];
return "unknown";
}
static char get_alignflag(const struct kgsl_memdesc *m)
{
int align = kgsl_memdesc_get_align(m);
if (align >= ilog2(SZ_1M))
return 'L';
else if (align >= ilog2(SZ_64K))
return 'l';
return '-';
}
static char get_cacheflag(const struct kgsl_memdesc *m)
{
static const char table[] = {
[KGSL_CACHEMODE_WRITECOMBINE] = '-',
[KGSL_CACHEMODE_UNCACHED] = 'u',
[KGSL_CACHEMODE_WRITEBACK] = 'b',
[KGSL_CACHEMODE_WRITETHROUGH] = 't',
};
return table[kgsl_memdesc_get_cachemode(m)];
}
static void print_mem_entry(struct seq_file *s, struct kgsl_mem_entry *entry)
{
char flags[7];
char usage[16];
struct kgsl_memdesc *m = &entry->memdesc;
flags[0] = kgsl_memdesc_is_global(m) ? 'g' : '-';
flags[1] = m->flags & KGSL_MEMFLAGS_GPUREADONLY ? 'r' : '-';
flags[2] = get_alignflag(m);
flags[3] = get_cacheflag(m);
flags[4] = kgsl_memdesc_use_cpu_map(m) ? 'p' : '-';
flags[5] = (m->useraddr) ? 'Y' : 'N';
flags[6] = '\0';
kgsl_get_memory_usage(usage, sizeof(usage), m->flags);
seq_printf(s, "%08x %08lx %8d %5d %6s %10s %16s %5d\n",
m->gpuaddr, m->useraddr, m->size, entry->id, flags,
memtype_str(entry->memtype), usage, m->sglen);
}
static int process_mem_print(struct seq_file *s, void *unused)
{
struct kgsl_mem_entry *entry;
struct rb_node *node;
struct kgsl_process_private *private = s->private;
int next = 0;
seq_printf(s, "%8s %8s %8s %5s %6s %10s %16s %5s\n",
"gpuaddr", "useraddr", "size", "id", "flags", "type",
"usage", "sglen");
/* print all entries with a GPU address */
spin_lock(&private->mem_lock);
for (node = rb_first(&private->mem_rb); node; node = rb_next(node)) {
entry = rb_entry(node, struct kgsl_mem_entry, node);
print_mem_entry(s, entry);
}
/* now print all the unbound entries */
while (1) {
entry = idr_get_next(&private->mem_idr, &next);
if (entry == NULL)
break;
if (entry->memdesc.gpuaddr == 0)
print_mem_entry(s, entry);
next++;
}
spin_unlock(&private->mem_lock);
return 0;
}
static int process_mem_open(struct inode *inode, struct file *file)
{
return single_open(file, process_mem_print, inode->i_private);
}
static const struct file_operations process_mem_fops = {
.open = process_mem_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* kgsl_process_init_debugfs() - Initialize debugfs for a process
* @private: Pointer to process private structure created for the process
*
* @returns: 0 on success, error code otherwise
*
* kgsl_process_init_debugfs() is called at the time of creating the
* process struct when a process opens kgsl device for the first time.
* The function creates the debugfs files for the process. If debugfs is
* disabled in the kernel, we ignore that error and return as successful.
*/
int
kgsl_process_init_debugfs(struct kgsl_process_private *private)
{
unsigned char name[16];
int ret = 0;
struct dentry *dentry;
snprintf(name, sizeof(name), "%d", private->pid);
private->debug_root = debugfs_create_dir(name, proc_d_debugfs);
if (!private->debug_root)
return -EINVAL;
/*
* debugfs_create_dir() and debugfs_create_file() both
* return -ENODEV if debugfs is disabled in the kernel.
* We make a distinction between these two functions
* failing and debugfs being disabled in the kernel.
* In the first case, we abort process private struct
* creation, in the second we continue without any changes.
* So if debugfs is disabled in kernel, return as
* success.
*/
dentry = debugfs_create_file("mem", 0400, private->debug_root, private,
&process_mem_fops);
if (IS_ERR(dentry)) {
ret = PTR_ERR(dentry);
if (ret == -ENODEV)
ret = 0;
}
return ret;
}
void kgsl_core_debugfs_init(void)
{
kgsl_debugfs_dir = debugfs_create_dir("kgsl", 0);
proc_d_debugfs = debugfs_create_dir("proc", kgsl_debugfs_dir);
}
void kgsl_core_debugfs_close(void)
{
debugfs_remove_recursive(kgsl_debugfs_dir);
}
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