/*
* Faraday FTGMAC100 Gigabit Ethernet
*
* (C) Copyright 2009-2011 Faraday Technology
* Po-Yu Chuang <ratbert@faraday-tech.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <net/ip.h>
#include "ftgmac100.h"
#define DRV_NAME "ftgmac100"
#define DRV_VERSION "0.7"
#define RX_QUEUE_ENTRIES 256 /* must be power of 2 */
#define TX_QUEUE_ENTRIES 512 /* must be power of 2 */
#define MAX_PKT_SIZE 1518
#define RX_BUF_SIZE PAGE_SIZE /* must be smaller than 0x3fff */
/******************************************************************************
* private data
*****************************************************************************/
struct ftgmac100_descs {
struct ftgmac100_rxdes rxdes[RX_QUEUE_ENTRIES];
struct ftgmac100_txdes txdes[TX_QUEUE_ENTRIES];
};
struct ftgmac100 {
struct resource *res;
void __iomem *base;
int irq;
struct ftgmac100_descs *descs;
dma_addr_t descs_dma_addr;
unsigned int rx_pointer;
unsigned int tx_clean_pointer;
unsigned int tx_pointer;
unsigned int tx_pending;
spinlock_t tx_lock;
struct net_device *netdev;
struct device *dev;
struct napi_struct napi;
struct mii_bus *mii_bus;
int phy_irq[PHY_MAX_ADDR];
struct phy_device *phydev;
int old_speed;
};
static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv,
struct ftgmac100_rxdes *rxdes, gfp_t gfp);
/******************************************************************************
* internal functions (hardware register access)
*****************************************************************************/
#define INT_MASK_ALL_ENABLED (FTGMAC100_INT_RPKT_LOST | \
FTGMAC100_INT_XPKT_ETH | \
FTGMAC100_INT_XPKT_LOST | \
FTGMAC100_INT_AHB_ERR | \
FTGMAC100_INT_PHYSTS_CHG | \
FTGMAC100_INT_RPKT_BUF | \
FTGMAC100_INT_NO_RXBUF)
static void ftgmac100_set_rx_ring_base(struct ftgmac100 *priv, dma_addr_t addr)
{
iowrite32(addr, priv->base + FTGMAC100_OFFSET_RXR_BADR);
}
static void 