/*******************************************************************************
  DWMAC Management Counters

  Copyright (C) 2011  STMicroelectronics Ltd

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope 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.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
*******************************************************************************/

#include <linux/kernel.h>
#include <linux/io.h>
#include "mmc.h"

/* MAC Management Counters register offset */

#define MMC_CNTRL		0x00	/* MMC Control */
#define MMC_RX_INTR		0x04	/* MMC RX Interrupt */
#define MMC_TX_INTR		0x08	/* MMC TX Interrupt */
#define MMC_RX_INTR_MASK	0x0c	/* MMC Interrupt Mask */
#define MMC_TX_INTR_MASK	0x10	/* MMC Interrupt Mask */
#define MMC_DEFAULT_MASK	0xffffffff

/* MMC TX counter registers */

/* Note:
 * _GB register stands for good and bad frames
 * _G is for good only.
 */
#define MMC_TX_OCTETCOUNT_GB		0x14
#define MMC_TX_FRAMECOUNT_GB		0x18
#define MMC_TX_BROADCASTFRAME_G		0x1c
#define MMC_TX_MULTICASTFRAME_G		0x20
#define MMC_TX_64_OCTETS_GB		0x24
#define MMC_TX_65_TO_127_OCTETS_GB	0x28
#define MMC_TX_128_TO_255_OCTETS_GB	0x2c
#define MMC_TX_256_TO_511_OCTETS_GB	0x30
#define MMC_TX_512_TO_1023_OCTETS_GB	0x34
#define MMC_TX_1024_TO_MAX_OCTETS_GB	0x38
#define MMC_TX_UNICAST_GB		0x3c
#define MMC_TX_MULTICAST_GB		0x40
#define MMC_TX_BROADCAST_GB		0x44
#define MMC_TX_UNDERFLOW_ERROR		0x48
#define MMC_TX_SINGLECOL_G		0x4c
#define MMC_TX_MULTICOL_G		0x50
#define MMC_TX_DEFERRED			0x54
#define MMC_TX_LATECOL			0x58
#define MMC_TX_EXESSCOL			0x5c
#define MMC_TX_CARRIER_ERROR		0x60
#define MMC_TX_OCTETCOUNT_G		0x64
#define MMC_TX_FRAMECOUNT_G		0x68
#define MMC_TX_EXCESSDEF		0x6c
#define MMC_TX_PAUSE_FRAME		0x70
#define MMC_TX_VLAN_FRAME_G		0x74

/* MMC RX counter registers */
#define MMC_RX_FRAMECOUNT_GB		0x80
#define MMC_RX_OCTETCOUNT_GB		0x84
#define MMC_RX_OCTETCOUNT_G		0x88
#define MMC_RX_BROADCASTFRAME_G		0x8c
#define MMC_RX_MULTICASTFRAME_G		0x90
#define MMC_RX_CRC_ERROR		0x94
#define MMC_RX_ALIGN_ERROR		0x98
#define MMC_RX_RUN_ERROR		0x9C
#define MMC_RX_JABBER_ERROR		0xA0
#define MMC_RX_UNDERSIZE_G		0xA4
#define MMC_RX_OVERSIZE_G		0xA8
#define MMC_RX_64_OCTETS_GB		0xAC
#define MMC_RX_65_TO_127_OCTETS_GB	0xb0
#define MMC_RX_128_TO_255_OCTETS_GB	0xb4
#define MMC_RX_256_TO_511_OCTETS_GB	0xb8
#define MMC_RX_512_TO_1023_OCTETS_GB	0xbc
#define MMC_RX_1024_TO_MAX_OCTETS_GB	0xc0
#define MMC_RX_UNICAST_G		0xc4
#define MMC_RX_LENGTH_ERROR		0xc8
#define MMC_RX_AUTOFRANGETYPE		0xcc
#define MMC_RX_PAUSE_FRAMES		0xd0
#define MMC_RX_FIFO_OVERFLOW		0xd4
#define MMC_RX_VLAN_FRAMES_GB		0xd8
#define MMC_RX_WATCHDOG_ERROR		0xdc
/* IPC*/
#define MMC_RX_IPC_INTR_MASK		0x100
#define MMC_RX_IPC_INTR			0x108
/* IPv4*/
#define MMC_RX_IPV4_GD			0x110
#define MMC_RX_IPV4_HDERR		0x114
#define MMC_RX_IPV4_NOPAY		0x118
#define MMC_RX_IPV4_FRAG		0x11C
#define MMC_RX_IPV4_UDSBL		0x120

#define MMC_RX_IPV4_GD_OCTETS		0x150
#define MMC_RX_IPV4_HDERR_OCTETS	0x154
#define MMC_RX_IPV4_NOPAY_OCTETS	0x158
#define MMC_RX_IPV4_FRAG_OCTETS		0x15c
#define MMC_RX_IPV4_UDSBL_OCTETS	0x160

/* IPV6*/
#define MMC_RX_IPV6_GD_OCTETS		0x164
#define MMC_RX_IPV6_HDERR_OCTETS	0x168
#define MMC_RX_IPV6_NOPAY_OCTETS	0x16c

#define MMC_RX_IPV6_GD			0x124
#define MMC_RX_IPV6_HDERR		0x128
#define MMC_RX_IPV6_NOPAY		0x12c

/* Protocols*/
#define MMC_RX_UDP_GD			0x130
#define MMC_RX_UDP_ERR			0x134
#define MMC_RX_TCP_GD			0x138
#define MMC_RX_TCP_ERR			0x13c
#define MMC_RX_ICMP_GD			0x140
#define MMC_RX_ICMP_ERR			0x144

#define MMC_RX_UDP_GD_OCTETS		0x170
#define MMC_RX_UDP_ERR_OCTETS		0x174
#define MMC_RX_TCP_GD_OCTETS		0x178
#define MMC_RX_TCP_ERR_OCTETS		0x17c
#define MMC_RX_ICMP_GD_OCTETS		0x180
#define MMC_RX_ICMP_ERR_OCTETS		0x184

void dwmac_mmc_ctrl(void __iomem *mmcaddr, unsigned int mode)
{
	u32 value = readl(mmcaddr + MMC_CNTRL);

	value |= (mode & 0x3F);

	writel(value, mmcaddr + MMC_CNTRL);

	pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n",
		 MMC_CNTRL, value);
}

/* To mask all all interrupts.*/
void dwmac_mmc_intr_all_mask(void __iomem *mmcaddr)
{
	writel(MMC_DEFAULT_MASK, mmcaddr + MMC_RX_INTR_MASK);
	writel(MMC_DEFAULT_MASK, mmcaddr + MMC_TX_INTR_MASK);
	writel(MMC_DEFAULT_MASK, mmcaddr + MMC_RX_IPC_INTR_MASK);
}

/* This reads the MAC core counters (if actaully supported).
 * by default the MMC core is programmed to reset each
 * counter after a read. So all the field of the mmc struct
 * have to be incremented.
 */
void dwmac_mmc_read(void __iomem *mmcaddr, struct stmmac_counters *mmc)
{
	mmc->mmc_tx_octetcount_gb += readl(mmcaddr + MMC_TX_OCTETCOUNT_GB);
	mmc->mmc_tx_framecount_gb += readl(mmcaddr + MMC_TX_FRAMECOUNT_GB);
	mmc->mmc_tx_broadcastframe_g += readl(mmcaddr +
					      MMC_TX_BROADCASTFRAME_G);
	mmc->mmc_tx_multicastframe_g += readl(mmcaddr +
					      MMC_TX_MULTICASTFRAME_G);
	mmc->mmc_tx_64_octets_gb += readl(mmcaddr + MMC_TX_64_OCTETS_GB);
	mmc->mmc_tx_65_to_127_octets_gb +=
	    readl(mmcaddr + MMC_TX_65_TO_127_OCTETS_GB);
	mmc->mmc_tx_128_to_255_octets_gb +=
	    readl(mmcaddr + MMC_TX_128_TO_255_OCTETS_GB);
	mmc->mmc_tx_256_to_511_octets_gb +=
	    readl(mmcaddr + MMC_TX_256_TO_511_OCTETS_GB);
	mmc->mmc_tx_512_to_1023_octets_gb +=
	    readl(mmcaddr + MMC_TX_512_TO_1023_OCTETS_GB);
	mmc->mmc_tx_1024_to_max_octets_gb +=
	    readl(mmcaddr + MMC_TX_1024_TO_MAX_OCTETS_GB);
	mmc->mmc_tx_unicast_gb += readl(mmcaddr + MMC_TX_UNICAST_GB);
	mmc->mmc_tx_multicast_gb += readl(mmcaddr + MMC_TX_MULTICAST_GB);
	mmc->mmc_tx_broadcast_gb += readl(mmcaddr + MMC_TX_BROADCAST_GB);
	mmc->mmc_tx_underflow_error += readl(mmcaddr + MMC_TX_UNDERFLOW_ERROR);
	mmc->mmc_tx_singlecol_g += readl(mmcaddr + MMC_TX_SINGLECOL_G);
	mmc->mmc_tx_multicol_g += readl(mmcaddr + MMC_TX_MULTICOL_G);
	mmc->mmc_tx_deferred += readl(mmcaddr + MMC_TX_DEFERRED);
	mmc->mmc_tx_latecol += readl(mmcaddr + MMC_TX_LATECOL);
	mmc->mmc_tx_exesscol += readl(mmcaddr + MMC_TX_EXESSCOL);
	mmc->mmc_tx_carrier_error += readl(mmcaddr + MMC_TX_CARRIER_ERROR);
	mmc->mmc_tx_octetcount_g += readl(mmcaddr + MMC_TX_OCTETCOUNT_G);
	mmc->mmc_tx_framecount_g += readl(mmcaddr + MMC_TX_FRAMECOUNT_G);
	mmc->mmc_tx_excessdef += readl(mmcaddr + MMC_TX_EXCESSDEF);
	mmc->mmc_tx_pause_frame += readl(mmcaddr + MMC_TX_PAUSE_FRAME);
	mmc->mmc_tx_vlan_frame_g += readl(mmcaddr + MMC_TX_VLAN_FRAME_G);

	/* MMC RX counter registers */
	mmc->mmc_rx_framecount_gb += readl(mmcaddr + MMC_RX_FRAMECOUNT_GB);
	mmc->mmc_rx_octetcount_gb += readl(mmcaddr + MMC_RX_OCTETCOUNT_GB);
	mmc->mmc_rx_octetcount_g += readl(mmcaddr + MMC_RX_OCTETCOUNT_G);
	mmc->mmc_rx_broadcastframe_g += readl(mmcaddr +
					      MMC_RX_BROADCASTFRAME_G);
	mmc->mmc_rx_multicastframe_g += readl(mmcaddr +
					      MMC_RX_MULTICASTFRAME_G);
	mmc->mmc_rx_crc_error += readl(mmcaddr + MMC_RX_CRC_ERROR);
	mmc->mmc_rx_align_error += readl(mmcaddr + MMC_RX_ALIGN_ERROR);
	mmc->mmc_rx_run_error += readl(mmcaddr + MMC_RX_RUN_ERROR);
	mmc->mmc_rx_jabber_error += readl(mmcaddr + MMC_RX_JABBER_ERROR);
	mmc->mmc_rx_undersize_g += readl(mmcaddr + MMC_RX_UNDERSIZE_G);
	mmc->mmc_rx_oversize_g += readl(mmcaddr + MMC_RX_OVERSIZE_G);
	mmc->mmc_rx_64_octets_gb += readl(mmcaddr + MMC_RX_64_OCTETS_GB);
	mmc->mmc_rx_65_to_127_octets_gb +=
	    readl(mmcaddr + MMC_RX_65_TO_127_OCTETS_GB);
	mmc->mmc_rx_128_to_255_octets_gb +=
	    readl(mmcaddr + MMC_RX_128_TO_255_OCTETS_GB);
	mmc->mmc_rx_256_to_511_octets_gb +=
	    readl(mmcaddr + MMC_RX_256_TO_511_OCTETS_GB);
	mmc->mmc_rx_512_to_1023_octets_gb +=
	    readl(mmcaddr + MMC_RX_512_TO_1023_OCTETS_GB);
	mmc->mmc_rx_1024_to_max_octets_gb +=
	    readl(mmcaddr + MMC_RX_1024_TO_MAX_OCTETS_GB);
	mmc->mmc_rx_unicast_g += readl(mmcaddr + MMC_RX_UNICAST_G);
	mmc->mmc_rx_length_error += readl(mmcaddr + MMC_RX_LENGTH_ERROR);
	mmc->mmc_rx_autofrangetype += readl(mmcaddr + MMC_RX_AUTOFRANGETYPE);
	mmc->mmc_rx_pause_frames += readl(mmcaddr + MMC_RX_PAUSE_FRAMES);
	mmc->mmc_rx_fifo_overflow += readl(mmcaddr + MMC_RX_FIFO_OVERFLOW);
	mmc->mmc_rx_vlan_frames_gb += readl(mmcaddr + MMC_RX_VLAN_FRAMES_GB);
	mmc->mmc_rx_watchdog_error += readl(mmcaddr + MMC_RX_WATCHDOG_ERROR);
	/* IPC */
	mmc->mmc_rx_ipc_intr_mask += readl(mmcaddr + MMC_RX_IPC_INTR_MASK);
	mmc->mmc_rx_ipc_intr += readl(mmcaddr + MMC_RX_IPC_INTR);
	/* IPv4 */
	mmc->mmc_rx_ipv4_gd += readl(mmcaddr + MMC_RX_IPV4_GD);
	mmc->mmc_rx_ipv4_hderr += readl(mmcaddr + MMC_RX_IPV4_HDERR);
	mmc->mmc_rx_ipv4_nopay += readl(mmcaddr + MMC_RX_IPV4_NOPAY);
	mmc->mmc_rx_ipv4_frag += readl(mmcaddr + MMC_RX_IPV4_FRAG);
	mmc->mmc_rx_ipv4_udsbl += readl(mmcaddr + MMC_RX_IPV4_UDSBL);

	mmc->mmc_rx_ipv4_gd_octets += readl(mmcaddr + MMC_RX_IPV4_GD_OCTETS);
	mmc->mmc_rx_ipv4_hderr_octets +=
	    readl(mmcaddr + MMC_RX_IPV4_HDERR_OCTETS);
	mmc->mmc_rx_ipv4_nopay_octets +=
	    readl(mmcaddr + MMC_RX_IPV4_NOPAY_OCTETS);
	mmc->mmc_rx_ipv4_frag_octets += readl(mmcaddr +
					      MMC_RX_IPV4_FRAG_OCTETS);
	mmc->mmc_rx_ipv4_udsbl_octets +=
	    readl(mmcaddr + MMC_RX_IPV4_UDSBL_OCTETS);

	/* IPV6 */
	mmc->mmc_rx_ipv6_gd_octets += readl(mmcaddr + MMC_RX_IPV6_GD_OCTETS);
	mmc->mmc_rx_ipv6_hderr_octets +=
	    readl(mmcaddr + MMC_RX_IPV6_HDERR_OCTETS);
	mmc->mmc_rx_ipv6_nopay_octets +=
	    readl(mmcaddr + MMC_RX_IPV6_NOPAY_OCTETS);

	mmc->mmc_rx_ipv6_gd += readl(mmcaddr + MMC_RX_IPV6_GD);
	mmc->mmc_rx_ipv6_hderr += readl(mmcaddr + MMC_RX_IPV6_HDERR);
	mmc->mmc_rx_ipv6_nopay += readl(mmcaddr + MMC_RX_IPV6_NOPAY);

	/* Protocols */
	mmc->mmc_rx_udp_gd += readl(mmcaddr + MMC_RX_UDP_GD);
	mmc->mmc_rx_udp_err += readl(mmcaddr + MMC_RX_UDP_ERR);
	mmc->mmc_rx_tcp_gd += readl(mmcaddr + MMC_RX_TCP_GD);
	mmc->mmc_rx_tcp_err += readl(mmcaddr + MMC_RX_TCP_ERR);
	mmc->mmc_rx_icmp_gd += readl(mmcaddr + MMC_RX_ICMP_GD);
	mmc->mmc_rx_icmp_err += readl(mmcaddr + MMC_RX_ICMP_ERR);

	mmc->mmc_rx_udp_gd_octets += readl(mmcaddr + MMC_RX_UDP_GD_OCTETS);
	mmc->mmc_rx_udp_err_octets += readl(mmcaddr + MMC_RX_UDP_ERR_OCTETS);
	mmc->mmc_rx_tcp_gd_octets += readl(mmcaddr + MMC_RX_TCP_GD_OCTETS);
	mmc->mmc_rx_tcp_err_octets += readl(mmcaddr + MMC_RX_TCP_ERR_OCTETS);
	mmc->mmc_rx_icmp_gd_octets += readl(mmcaddr + MMC_RX_ICMP_GD_OCTETS);
	mmc->mmc_rx_icmp_err_octets += readl(mmcaddr + MMC_RX_ICMP_ERR_OCTETS);
}