/* Copyright Statement:
 *
 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein
 * is confidential and proprietary to MediaTek Inc. and/or its licensors.
 * Without the prior written permission of MediaTek inc. and/or its licensors,
 * any reproduction, modification, use or disclosure of MediaTek Software,
 * and information contained herein, in whole or in part, shall be strictly
 * prohibited.
 *
 * MediaTek Inc. (C) 2010. All rights reserved.
 *
 * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
 * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
 * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
 * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
 * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
 * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
 * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO
 * SUCH THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY
 * ACKNOWLEDGES THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY
 * THIRD PARTY ALL PROPER LICENSES CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK
 * SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO
 * RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN
 * FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
 * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED
 * HEREUNDER WILL BE, AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK
 * SOFTWARE AT ISSUE, OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE
 * PAID BY RECEIVER TO MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
 *
 * The following software/firmware and/or related documentation
 * ("MediaTek Software") have been modified by MediaTek Inc. All revisions
 * are subject to any receiver's applicable license agreements with MediaTek
 * Inc.
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/uaccess.h>
// #include <mach/mt6575_gpt.h> /* --- by chhung */
#include "dbg.h"
#include "mt6575_sd.h"
#include <linux/seq_file.h>


/* for debug zone */
unsigned int sd_debug_zone[4] = {
	0,
	0,
	0,
	0
};

#if defined(MT6575_SD_DEBUG)
static char cmd_buf[256];
/* for driver profile */
#define TICKS_ONE_MS  (13000)
u32 gpt_enable;
u32 sdio_pro_enable;   /* make sure gpt is enabled */
u32 sdio_pro_time;     /* no more than 30s */
struct sdio_profile sdio_perfomance = {0};

u32 msdc_time_calc(u32 old_L32, u32 old_H32, u32 new_L32, u32 new_H32)
{
	u32 ret = 0;

	if (new_H32 == old_H32) {
		ret = new_L32 - old_L32;
	} else if (new_H32 == (old_H32 + 1)) {
		if (new_L32 > old_L32)
			pr_debug("msdc old_L<0x%x> new_L<0x%x>\n",
				 old_L32, new_L32);
		ret = (0xffffffff - old_L32);
		ret += new_L32;
	} else {
		pr_debug("msdc old_H<0x%x> new_H<0x%x>\n", old_H32, new_H32);
	}

	return ret;
}

void msdc_sdio_profile(struct sdio_profile *result)
{
	struct cmd_profile *cmd;
	u32 i;

	pr_debug("sdio === performance dump ===\n");
	pr_debug("sdio === total execute tick<%d> time<%dms> Tx<%dB> Rx<%dB>\n",
		 result->total_tc, result->total_tc / TICKS_ONE_MS,
		 result->total_tx_bytes, result->total_rx_bytes);

	/* CMD52 Dump */
	cmd = &result->cmd52_rx;
	pr_debug("sdio === CMD52 Rx <%d>times tick<%d> Max<%d> Min<%d> Aver<%d>\n",
		 cmd->count, cmd->tot_tc, cmd->max_tc, cmd->min_tc,
		 cmd->tot_tc / cmd->count);
	cmd = &result->cmd52_tx;
	pr_debug("sdio === CMD52 Tx <%d>times tick<%d> Max<%d> Min<%d> Aver<%d>\n",
		 cmd->count, cmd->tot_tc, cmd->max_tc, cmd->min_tc,
		 cmd->tot_tc / cmd->count);

	/* CMD53 Rx bytes + block mode */
	for (i = 0; i < 512; i++) {
		cmd = &result->cmd53_rx_byte[i];
		if (cmd->count) {
			pr_debug("sdio<%6d><%3dB>_Rx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n",
				 cmd->count, i, cmd->tot_tc, cmd->max_tc,
				 cmd->min_tc, cmd->tot_tc / cmd->count,
				 cmd->tot_bytes,
				 (cmd->tot_bytes / 10) * 13 / (cmd->tot_tc / 10));
		}
	}
	for (i = 0; i < 100; i++) {
		cmd = &result->cmd53_rx_blk[i];
		if (cmd->count) {
			pr_debug("sdio<%6d><%3d>B_Rx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n",
				 cmd->count, i, cmd->tot_tc, cmd->max_tc,
				 cmd->min_tc, cmd->tot_tc / cmd->count,
				 cmd->tot_bytes,
				 (cmd->tot_bytes / 10) * 13 / (cmd->tot_tc / 10));
		}
	}

	/* CMD53 Tx bytes + block mode */
	for (i = 0; i < 512; i++) {
		cmd = &result->cmd53_tx_byte[i];
		if (cmd->count) {
			pr_debug("sdio<%6d><%3dB>_Tx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n",
				 cmd->count, i, cmd->tot_tc, cmd->max_tc,
				 cmd->min_tc, cmd->tot_tc / cmd->count,
				 cmd->tot_bytes,
				 (cmd->tot_bytes / 10) * 13 / (cmd->tot_tc / 10));
		}
	}
	for (i = 0; i < 100; i++) {
		cmd = &result->cmd53_tx_blk[i];
		if (cmd->count) {
			pr_debug("sdio<%6d><%3d>B_Tx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n",
				 cmd->count, i, cmd->tot_tc, cmd->max_tc,
				 cmd->min_tc, cmd->tot_tc / cmd->count,
				 cmd->tot_bytes,
				 (cmd->tot_bytes / 10) * 13 / (cmd->tot_tc / 10));
		}
	}

	pr_debug("sdio === performance dump done ===\n");
}

//========= sdio command table ===========
void msdc_performance(u32 opcode, u32 sizes, u32 bRx, u32 ticks)
{
	struct sdio_profile *result = &sdio_perfomance;
	struct cmd_profile *cmd;
	u32 block;

	if (sdio_pro_enable == 0)
		return;

	if (opcode == 52) {
		cmd = bRx ?  &result->cmd52_rx : &result->cmd52_tx;
	} else if (opcode == 53) {
		if (sizes < 512) {
			cmd = bRx ?  &result->cmd53_rx_byte[sizes] : &result->cmd53_tx_byte[sizes];
		} else {
			block = sizes / 512;
			if (block >= 99) {
				pr_err("cmd53 error blocks\n");
				while (1)
					;
			}
			cmd = bRx ?  &result->cmd53_rx_blk[block] : &result->cmd53_tx_blk[block];
		}
	} else {
		return;
	}

	/* update the members */
	if (ticks > cmd->max_tc)
		cmd->max_tc = ticks;
	if (cmd->min_tc == 0 || ticks < cmd->min_tc)
		cmd->min_tc = ticks;
	cmd->tot_tc += ticks;
	cmd->tot_bytes += sizes;
	cmd->count++;

	if (bRx)
		result->total_rx_bytes += sizes;
	else
		result->total_tx_bytes += sizes;
	result->total_tc += ticks;

	/* dump when total_tc > 30s */
	if (result->total_tc >= sdio_pro_time * TICKS_ONE_MS * 1000) {
		msdc_sdio_profile(result);
		memset(result, 0, sizeof(struct sdio_profile));
	}
}

//========== driver proc interface ===========
static int msdc_debug_proc_read(struct seq_file *s, void *p)
{
	seq_puts(s, "\n=========================================\n");
	seq_puts(s, "Index<0> + Id + Zone\n");
	seq_puts(s, "-> PWR<9> WRN<8> | FIO<7> OPS<6> FUN<5> CFG<4> | INT<3> RSP<2> CMD<1> DMA<0>\n");
	seq_puts(s, "-> echo 0 3 0x3ff >msdc_bebug -> host[3] debug zone set to 0x3ff\n");
	seq_printf(s, "-> MSDC[0] Zone: 0x%.8x\n", sd_debug_zone[0]);
	seq_printf(s, "-> MSDC[1] Zone: 0x%.8x\n", sd_debug_zone[1]);
	seq_printf(s, "-> MSDC[2] Zone: 0x%.8x\n", sd_debug_zone[2]);
	seq_printf(s, "-> MSDC[3] Zone: 0x%.8x\n", sd_debug_zone[3]);

	seq_puts(s, "Index<3> + SDIO_PROFILE + TIME\n");
	seq_puts(s, "-> echo 3 1 0x1E >msdc_bebug -> enable sdio_profile, 30s\n");
	seq_printf(s, "-> SDIO_PROFILE<%d> TIME<%ds>\n",
		   sdio_pro_enable, sdio_pro_time);
	seq_puts(s, "=========================================\n\n");

	return 0;
}

static ssize_t msdc_debug_proc_write(struct file *file,
				     const char __user *buf,
				     size_t count, loff_t *data)
{
	int ret;

	int cmd, p1, p2;
	int id, zone;
	int mode, size;

	if (count == 0)
		return -1;
	if (count > 255)
		count = 255;

	if (copy_from_user(cmd_buf, buf, count))
		return -EFAULT;

	cmd_buf[count] = '\0';
	pr_debug("msdc Write %s\n", cmd_buf);

	ret = sscanf(cmd_buf, "%x %x %x", &cmd, &p1, &p2);
	if (ret != 3)
		return -EINVAL;

	if (cmd == SD_TOOL_ZONE) {
		id = p1;
		zone = p2;
		zone &= 0x3ff;
		pr_debug("msdc host_id<%d> zone<0x%.8x>\n", id, zone);
		if (id >= 0 && id <= 3) {
			sd_debug_zone[id] = zone;
		} else if (id == 4) {
			sd_debug_zone[0] = sd_debug_zone[1] = zone;
			sd_debug_zone[2] = sd_debug_zone[3] = zone;
		} else {
			pr_err("msdc host_id error when set debug zone\n");
		}
	} else if (cmd == SD_TOOL_SDIO_PROFILE) {
		if (p1 == 1) { /* enable profile */
			if (gpt_enable == 0)
				gpt_enable = 1;
			sdio_pro_enable = 1;
			if (p2 == 0)
				p2 = 1;
			if (p2 >= 30)
				p2 = 30;
			sdio_pro_time = p2;
		} else if (p1 == 0) {
			/* todo */
			sdio_pro_enable = 0;
		}
	}

	return count;
}

static int msdc_debug_show(struct inode *inode, struct file *file)
{
	return single_open(file, msdc_debug_proc_read, NULL);
}

static const struct file_operations msdc_debug_fops = {
	.owner		= THIS_MODULE,
	.open		= msdc_debug_show,
	.read		= seq_read,
	.write		= msdc_debug_proc_write,
	.llseek		= seq_lseek,
	.release	= single_release,
};

void msdc_debug_proc_init(void)
{
	proc_create("msdc_debug", 0660, NULL, &msdc_debug_fops);
}
EXPORT_SYMBOL_GPL(msdc_debug_proc_init);
#endif