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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2020 Intel Corporation
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/pm_runtime.h>
#include "ipu-psys.h"
#include "ipu-platform-regs.h"
/*
* GPC (Gerneral Performance Counters)
*/
#define IPU_PSYS_GPC_NUM 16
#ifndef CONFIG_PM
#define pm_runtime_get_sync(d) 0
#define pm_runtime_put(d) 0
#endif
struct ipu_psys_gpc {
bool enable;
unsigned int route;
unsigned int source;
unsigned int sense;
unsigned int gpcindex;
void *prit;
};
struct ipu_psys_gpcs {
bool gpc_enable;
struct ipu_psys_gpc gpc[IPU_PSYS_GPC_NUM];
void *prit;
};
static int ipu6_psys_gpc_global_enable_get(void *data, u64 *val)
{
struct ipu_psys_gpcs *psys_gpcs = data;
struct ipu_psys *psys = psys_gpcs->prit;
mutex_lock(&psys->mutex);
*val = psys_gpcs->gpc_enable;
mutex_unlock(&psys->mutex);
return 0;
}
static int ipu6_psys_gpc_global_enable_set(void *data, u64 val)
{
struct ipu_psys_gpcs *psys_gpcs = data;
struct ipu_psys *psys = psys_gpcs->prit;
void __iomem *base;
int idx, res;
if (val != 0 && val != 1)
return -EINVAL;
if (!psys || !psys->pdata || !psys->pdata->base)
return -EINVAL;
mutex_lock(&psys->mutex);
base = psys->pdata->base + IPU_GPC_BASE;
res = pm_runtime_get_sync(&psys->adev->dev);
if (res < 0) {
pm_runtime_put(&psys->adev->dev);
mutex_unlock(&psys->mutex);
return res;
}
if (val == 0) {
writel(0x0, base + IPU_GPREG_TRACE_TIMER_RST);
writel(0x0, base + IPU_CDC_MMU_GPC_OVERALL_ENABLE);
writel(0xffff, base + IPU_CDC_MMU_GPC_SOFT_RESET);
psys_gpcs->gpc_enable = false;
for (idx = 0; idx < IPU_PSYS_GPC_NUM; idx++) {
psys_gpcs->gpc[idx].enable = 0;
psys_gpcs->gpc[idx].sense = 0;
psys_gpcs->gpc[idx].route = 0;
psys_gpcs->gpc[idx].source = 0;
}
pm_runtime_mark_last_busy(&psys->adev->dev);
pm_runtime_put_autosuspend(&psys->adev->dev);
} else {
/* Set gpc reg and start all gpc here.
* RST free running local timer.
*/
writel(0x0, base + IPU_GPREG_TRACE_TIMER_RST);
writel(0x1, base + IPU_GPREG_TRACE_TIMER_RST);
for (idx = 0; idx < IPU_PSYS_GPC_NUM; idx++) {
/* Enable */
writel(psys_gpcs->gpc[idx].enable,
base + IPU_CDC_MMU_GPC_ENABLE0 + 4 * idx);
/* Setting (route/source/sense) */
writel((psys_gpcs->gpc[idx].sense
<< IPU_GPC_SENSE_OFFSET)
+ (psys_gpcs->gpc[idx].route
<< IPU_GPC_ROUTE_OFFSET)
+ (psys_gpcs->gpc[idx].source
<< IPU_GPC_SOURCE_OFFSET),
base + IPU_CDC_MMU_GPC_CNT_SEL0 + 4 * idx);
}
/* Soft reset and Overall Enable. */
writel(0x0, base + IPU_CDC_MMU_GPC_OVERALL_ENABLE);
writel(0xffff, base + IPU_CDC_MMU_GPC_SOFT_RESET);
writel(0x1, base + IPU_CDC_MMU_GPC_OVERALL_ENABLE);
psys_gpcs->gpc_enable = true;
}
mutex_unlock(&psys->mutex);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(psys_gpc_globe_enable_fops,
ipu6_psys_gpc_global_enable_get,
ipu6_psys_gpc_global_enable_set, "%llu\n");
static int ipu6_psys_gpc_count_get(void *data, u64 *val)
{
struct ipu_psys_gpc *psys_gpc = data;
struct ipu_psys *psys = psys_gpc->prit;
void __iomem *base;
int res;
if (!psys || !psys->pdata || !psys->pdata->base)
return -EINVAL;
mutex_lock(&psys->mutex);
base = psys->pdata->base + IPU_GPC_BASE;
res = pm_runtime_get_sync(&psys->adev->dev);
if (res < 0) {
pm_runtime_put(&psys->adev->dev);
mutex_unlock(&psys->mutex);
return res;
}
*val = readl(base + IPU_CDC_MMU_GPC_VALUE0 + 4 * psys_gpc->gpcindex);
mutex_unlock(&psys->mutex);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(psys_gpc_count_fops,
ipu6_psys_gpc_count_get,
NULL, "%llu\n");
int ipu_psys_gpc_init_debugfs(struct ipu_psys *psys)
{
struct dentry *gpcdir;
struct dentry *dir;
struct dentry *file;
int idx;
char gpcname[10];
struct ipu_psys_gpcs *psys_gpcs;
psys_gpcs = devm_kzalloc(&psys->dev, sizeof(*psys_gpcs), GFP_KERNEL);
if (!psys_gpcs)
return -ENOMEM;
gpcdir = debugfs_create_dir("gpc", psys->debugfsdir);
if (IS_ERR(gpcdir))
return -ENOMEM;
psys_gpcs->prit = psys;
file = debugfs_create_file("enable", 0600, gpcdir, psys_gpcs,
&psys_gpc_globe_enable_fops);
if (IS_ERR(file))
goto err;
for (idx = 0; idx < IPU_PSYS_GPC_NUM; idx++) {
sprintf(gpcname, "gpc%d", idx);
dir = debugfs_create_dir(gpcname, gpcdir);
if (IS_ERR(dir))
goto err;
file = debugfs_create_bool("enable", 0600, dir,
&psys_gpcs->gpc[idx].enable);
if (IS_ERR(file))
goto err;
debugfs_create_u32("source", 0600, dir,
&psys_gpcs->gpc[idx].source);
debugfs_create_u32("route", 0600, dir,
&psys_gpcs->gpc[idx].route);
debugfs_create_u32("sense", 0600, dir,
&psys_gpcs->gpc[idx].sense);
psys_gpcs->gpc[idx].gpcindex = idx;
psys_gpcs->gpc[idx].prit = psys;
file = debugfs_create_file("count", 0400, dir,
&psys_gpcs->gpc[idx],
&psys_gpc_count_fops);
if (IS_ERR(file))
goto err;
}
return 0;
err:
debugfs_remove_recursive(gpcdir);
return -ENOMEM;
}
#endif
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