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/*
* Atheros AR71xx built-in ethernet mac driver
*
* Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Based on Atheros' AG7100 driver
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#ifndef __AG71XX_H
#define __AG71XX_H
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
#include <linux/phy.h>
#include <linux/skbuff.h>
#include <linux/dma-mapping.h>
#include <linux/bitops.h>
#include <asm/mach-ar71xx/ar71xx.h>
#include <asm/mach-ar71xx/platform.h>
#define ETH_FCS_LEN 4
#define AG71XX_DRV_NAME "ag71xx"
#define AG71XX_DRV_VERSION "0.3.10"
#define AG71XX_NAPI_TX 1
#define AG71XX_NAPI_WEIGHT 64
#define AG71XX_INT_ERR (AG71XX_INT_RX_BE | AG71XX_INT_TX_BE)
#define AG71XX_INT_TX (AG71XX_INT_TX_PS)
#define AG71XX_INT_RX (AG71XX_INT_RX_PR | AG71XX_INT_RX_OF)
#ifdef AG71XX_NAPI_TX
#define AG71XX_INT_POLL (AG71XX_INT_RX | AG71XX_INT_TX)
#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL)
#else
#define AG71XX_INT_POLL (AG71XX_INT_RX)
#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL | AG71XX_INT_TX)
#endif
#define AG71XX_TX_FIFO_LEN 2048
#define AG71XX_TX_MTU_LEN 1536
#define AG71XX_RX_PKT_RESERVE 64
#define AG71XX_RX_PKT_SIZE \
(AG71XX_RX_PKT_RESERVE + ETH_HLEN + ETH_FRAME_LEN + ETH_FCS_LEN)
#define AG71XX_TX_RING_SIZE 64
#define AG71XX_TX_THRES_STOP (AG71XX_TX_RING_SIZE - 4)
#define AG71XX_TX_THRES_WAKEUP \
(AG71XX_TX_RING_SIZE - (AG71XX_TX_RING_SIZE / 4))
#define AG71XX_RX_RING_SIZE 128
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt, args...) printk(KERN_DEBUG fmt, ## args)
#else
#define DBG(fmt, args...) do {} while (0)
#endif
#define ag71xx_assert(_cond) \
do { \
if (_cond) \
break; \
printk("%s,%d: assertion failed\n", __FILE__, __LINE__); \
BUG(); \
} while (0)
struct ag71xx_desc {
u32 data;
u32 ctrl;
#define DESC_EMPTY BIT(31)
#define DESC_MORE BIT(24)
#define DESC_PKTLEN_M 0x1fff
u32 next;
};
struct ag71xx_buf {
struct sk_buff *skb;
};
struct ag71xx_ring {
struct ag71xx_buf *buf;
struct ag71xx_desc *descs;
dma_addr_t descs_dma;
unsigned int curr;
unsigned int dirty;
unsigned int size;
};
struct ag71xx {
void __iomem *mac_base;
void __iomem *mii_ctrl;
spinlock_t lock;
struct platform_device *pdev;
struct net_device *dev;
struct napi_struct napi;
struct ag71xx_ring rx_ring;
struct ag71xx_ring tx_ring;
struct phy_device *phy_dev;
struct mii_bus mii_bus;
unsigned int link;
unsigned int speed;
int duplex;
};
extern struct ethtool_ops ag71xx_ethtool_ops;
extern int ag71xx_mdio_init(struct ag71xx *ag, int id);
extern void ag71xx_mdio_cleanup(struct ag71xx *ag);
extern int ag71xx_mii_peek(struct ag71xx *ag);
extern void ag71xx_mii_ctrl_set_if(struct ag71xx *ag, unsigned int mii_if);
extern void ag71xx_mii_ctrl_set_speed(struct ag71xx *ag, unsigned int speed);
extern void ag71xx_link_update(struct ag71xx *ag);
static inline struct ag71xx_platform_data *ag71xx_get_pdata(struct ag71xx *ag)
{
return ag->pdev->dev.platform_data;
}
static inline void ag71xx_wr(struct ag71xx *ag, unsigned reg, u32 value)
{
__raw_writel(value, ag->mac_base + reg);
}
static inline u32 ag71xx_rr(struct ag71xx *ag, unsigned reg)
{
return __raw_readl(ag->mac_base + reg);
}
static inline void ag71xx_sb(struct ag71xx *ag, unsigned reg, u32 mask)
{
void __iomem *r = ag->mac_base + reg;
__raw_writel(__raw_readl(r) | mask, r);
}
static inline void ag71xx_cb(struct ag71xx *ag, unsigned reg, u32 mask)
{
void __iomem *r = ag->mac_base + reg;
__raw_writel(__raw_readl(r) & ~mask, r);
}
static inline int ag71xx_desc_empty(struct ag71xx_desc *desc)
{
return ((desc->ctrl & DESC_EMPTY) != 0);
}
static inline int ag71xx_desc_pktlen(struct ag71xx_desc *desc)
{
return (desc->ctrl & DESC_PKTLEN_M);
}
/* Register offsets */
#define AG71XX_REG_MAC_CFG1 0x0000
#define AG71XX_REG_MAC_CFG2 0x0004
#define AG71XX_REG_MAC_IPG 0x0008
#define AG71XX_REG_MAC_HDX 0x000c
#define AG71XX_REG_MAC_MFL 0x0010
#define AG71XX_REG_MII_CFG 0x0020
#define AG71XX_REG_MII_CMD 0x0024
#define AG71XX_REG_MII_ADDR 0x0028
#define AG71XX_REG_MII_CTRL 0x002c
#define AG71XX_REG_MII_STATUS 0x0030
#define AG71XX_REG_MII_IND 0x0034
#define AG71XX_REG_MAC_IFCTL 0x0038
#define AG71XX_REG_MAC_ADDR1 0x0040
#define AG71XX_REG_MAC_ADDR2 0x0044
#define AG71XX_REG_FIFO_CFG0 0x0048
#define AG71XX_REG_FIFO_CFG1 0x004c
#define AG71XX_REG_FIFO_CFG2 0x0050
#define AG71XX_REG_FIFO_CFG3 0x0054
#define AG71XX_REG_FIFO_CFG4 0x0058
#define AG71XX_REG_FIFO_CFG5 0x005c
#define AG71XX_REG_FIFO_RAM0 0x0060
#define AG71XX_REG_FIFO_RAM1 0x0064
#define AG71XX_REG_FIFO_RAM2 0x0068
#define AG71XX_REG_FIFO_RAM3 0x006c
#define AG71XX_REG_FIFO_RAM4 0x0070
#define AG71XX_REG_FIFO_RAM5 0x0074
#define AG71XX_REG_FIFO_RAM6 0x0078
#define AG71XX_REG_FIFO_RAM7 0x007c
#define AG71XX_REG_TX_CTRL 0x0180
#define AG71XX_REG_TX_DESC 0x0184
#define AG71XX_REG_TX_STATUS 0x0188
#define AG71XX_REG_RX_CTRL 0x018c
#define AG71XX_REG_RX_DESC 0x0190
#define AG71XX_REG_RX_STATUS 0x0194
#define AG71XX_REG_INT_ENABLE 0x0198
#define AG71XX_REG_INT_STATUS 0x019c
#define MAC_CFG1_TXE BIT(0)
#define MAC_CFG1_STX BIT(1)
#define MAC_CFG1_RXE BIT(2)
#define MAC_CFG1_SRX BIT(3)
#define MAC_CFG1_LB BIT(8)
#define MAC_CFG1_SR BIT(31)
#define MAC_CFG2_FDX BIT(0)
#define MAC_CFG2_CRC_EN BIT(1)
#define MAC_CFG2_PAD_CRC_EN BIT(2)
#define MAC_CFG2_LEN_CHECK BIT(4)
#define MAC_CFG2_HUGE_FRAME_EN BIT(5)
#define MAC_CFG2_IF_1000 BIT(9)
#define MAC_CFG2_IF_10_100 BIT(8)
#define AG71XX_INT_TX_PS BIT(0)
#define AG71XX_INT_TX_UR BIT(1)
#define AG71XX_INT_TX_BE BIT(3)
#define AG71XX_INT_RX_PR BIT(4)
#define AG71XX_INT_RX_OF BIT(6)
#define AG71XX_INT_RX_BE BIT(7)
#define MAC_IFCTL_SPEED BIT(16)
#define MII_CFG_CLK_DIV_4 0
#define MII_CFG_CLK_DIV_6 2
#define MII_CFG_CLK_DIV_8 3
#define MII_CFG_CLK_DIV_10 4
#define MII_CFG_CLK_DIV_14 5
#define MII_CFG_CLK_DIV_20 6
#define MII_CFG_CLK_DIV_28 7
#define MII_CMD_WRITE 0x0
#define MII_CMD_READ 0x1
#define MII_ADDR_S 8
#define MII_IND_BUSY BIT(0)
#define MII_IND_INVALID BIT(2)
#define TX_CTRL_TXE BIT(0)
#define TX_STATUS_PS BIT(0)
#define TX_STATUS_UR BIT(1)
#define TX_STATUS_BE BIT(3)
#define RX_CTRL_RXE BIT(0)
#define RX_STATUS_PR BIT(0)
#define RX_STATUS_OF BIT(1)
#define RX_STATUS_BE BIT(3)
#define FIFO_CFG5_BYTE_PER_CLK BIT(19)
#define MII_CTRL_SPEED_S 4
#define MII_CTRL_SPEED_M 3
#define MII_CTRL_SPEED_10 0
#define MII_CTRL_SPEED_100 1
#define MII_CTRL_SPEED_1000 2
static inline void ag71xx_int_enable(struct ag71xx *ag, u32 ints)
{
ag71xx_sb(ag, AG71XX_REG_INT_ENABLE, ints);
}
static inline void ag71xx_int_disable(struct ag71xx *ag, u32 ints)
{
ag71xx_cb(ag, AG71XX_REG_INT_ENABLE, ints);
}
#endif /* _AG71XX_H */
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