[net-next-2.6.git] / drivers / net / atlx / atlx.c

/* atlx.c -- common functions for Attansic network drivers
 *
 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
 * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
 *
 * Derived from Intel e1000 driver
 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
 *
 * 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., 59
 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/* Including this file like a header is a temporary hack, I promise. -- CHS */
#ifndef ATLX_C
#define ATLX_C

#include <linux/device.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/socket.h>
#include <linux/sockios.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/workqueue.h>

#include "atlx.h"

static struct atlx_spi_flash_dev flash_table[] = {
/*	MFR_NAME  WRSR  READ  PRGM  WREN  WRDI  RDSR  RDID  SEC_ERS CHIP_ERS */
	{"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52,   0x62},
	{"SST",   0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20,   0x60},
	{"ST",    0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8,   0xC7},
};

static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
{
	switch (cmd) {
	case SIOCGMIIPHY:
	case SIOCGMIIREG:
	case SIOCSMIIREG:
		return atlx_mii_ioctl(netdev, ifr, cmd);
	default:
		return -EOPNOTSUPP;
	}
}

/*
 * atlx_set_mac - Change the Ethernet Address of the NIC
 * @netdev: network interface device structure
 * @p: pointer to an address structure
 *
 * Returns 0 on success, negative on failure
 */
static int atlx_set_mac(struct net_device *netdev, void *p)
{
	struct atlx_adapter *adapter = netdev_priv(netdev);
	struct sockaddr *addr = p;

	if (netif_running(netdev))
		return -EBUSY;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
	memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);

	atlx_set_mac_addr(&adapter->hw);
	return 0;
}

static void atlx_check_for_link(struct atlx_adapter *adapter)
{
	struct net_device *netdev = adapter->netdev;
	u16 phy_data = 0;

	spin_lock(&adapter->lock);
	adapter->phy_timer_pending = false;
	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
	spin_unlock(&adapter->lock);

	/* notify upper layer link down ASAP */
	if (!(phy_data & BMSR_LSTATUS)) {
		/* Link Down */
		if (netif_carrier_ok(netdev)) {
			/* old link state: Up */
			dev_info(&adapter->pdev->dev, "%s link is down\n",
				netdev->name);
			adapter->link_speed = SPEED_0;
			netif_carrier_off(netdev);
		}
	}
	schedule_work(&adapter->link_chg_task);
}

/*
 * atlx_set_multi - Multicast and Promiscuous mode set
 * @netdev: network interface device structure
 *
 * The set_multi entry point is called whenever the multicast address
 * list or the network interface flags are updated.  This routine is
 * responsible for configuring the hardware for proper multicast,
 * promiscuous mode, and all-multi behavior.
 */
static void atlx_set_multi(struct net_device *netdev)
{
	struct atlx_adapter *adapter = netdev_priv(netdev);
	struct atlx_hw *hw = &adapter->hw;
	struct netdev_hw_addr *ha;
	u32 rctl;
	u32 hash_value;

	/* Check for Promiscuous and All Multicast modes */
	rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
	if (netdev->flags & IFF_PROMISC)
		rctl |= MAC_CTRL_PROMIS_EN;
	else if (netdev->flags & IFF_ALLMULTI) {
		rctl |= MAC_CTRL_MC_ALL_EN;
		rctl &= ~MAC_CTRL_PROMIS_EN;
	} else
		rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);

	iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);

	/* clear the old settings from the multicast hash table */
	iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
	iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));

	/* compute mc addresses' hash value ,and put it into hash table */
	netdev_for_each_mc_addr(ha, netdev) {
		hash_value = atlx_hash_mc_addr(hw, ha->addr);
		atlx_hash_set(hw, hash_value);
	}
}

/*
 * atlx_irq_enable - Enable default interrupt generation settings
 * @adapter: board private structure
 */
static void atlx_irq_enable(struct atlx_adapter *adapter)
{
	iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
	ioread32(adapter->hw.hw_addr + REG_IMR);
}

/*
 * atlx_irq_disable - Mask off interrupt generation on the NIC
 * @adapter: board private structure
 */
static void atlx_irq_disable(struct atlx_adapter *adapter)
{
	iowrite32(0, adapter->hw.hw_addr + REG_IMR);
	ioread32(adapter->hw.hw_addr + REG_IMR);
	synchronize_irq(adapter->pdev->irq);
}

static void atlx_clear_phy_int(struct atlx_adapter *adapter)
{
	u16 phy_data;
	unsigned long flags;

	spin_lock_irqsave(&adapter->lock, flags);
	atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
	spin_unlock_irqrestore(&adapter->lock, flags);
}

/*
 * atlx_tx_timeout - Respond to a Tx Hang
 * @netdev: network interface device structure
 */
static void atlx_tx_timeout(struct net_device *netdev)
{
	struct atlx_adapter *adapter = netdev_priv(netdev);
	/* Do the reset outside of interrupt context */
	schedule_work(&adapter->tx_timeout_task);
}

/*
 * atlx_link_chg_task - deal with link change event Out of interrupt context
 */
static void atlx_link_chg_task(struct work_struct *work)
{
	struct atlx_adapter *adapter;
	unsigned long flags;

	adapter = container_of(work, struct atlx_adapter, link_chg_task);

	spin_lock_irqsave(&adapter->lock, flags);
	atlx_check_link(adapter);
	spin_unlock_irqrestore(&adapter->lock, flags);
}

static void atlx_vlan_rx_register(struct net_device *netdev,
	struct vlan_group *grp)
{
	struct atlx_adapter *adapter = netdev_priv(netdev);
	unsigned long flags;
	u32 ctrl;

	spin_lock_irqsave(&adapter->lock, flags);
	/* atlx_irq_disable(adapter); FIXME: confirm/remove */
	adapter->vlgrp = grp;

	if (grp) {
		/* enable VLAN tag insert/strip */
		ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
		ctrl |= MAC_CTRL_RMV_VLAN;
		iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
	} else {
		/* disable VLAN tag insert/strip */
		ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
		ctrl &= ~MAC_CTRL_RMV_VLAN;
		iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
	}

	/* atlx_irq_enable(adapter); FIXME */
	spin_unlock_irqrestore(&adapter->lock, flags);
}

static void atlx_restore_vlan(struct atlx_adapter *adapter)
{
	atlx_vlan_rx_register(adapter->netdev, adapter->vlgrp);
}

#endif /* ATLX_C */
Commit	Line	Data
305282ba JC	1	/* atlx.c -- common functions for Attansic network drivers
	2	*
	3	* Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
	4	* Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
e8f720fd	5	* Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
305282ba JC	6	* Copyright(c) 2007 Atheros Corporation. All rights reserved.
	7	*
	8	* Derived from Intel e1000 driver
	9	* Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
	10	*
	11	* This program is free software; you can redistribute it and/or modify it
	12	* under the terms of the GNU General Public License as published by the Free
	13	* Software Foundation; either version 2 of the License, or (at your option)
	14	* any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful, but WITHOUT
	17	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	18	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	19	* more details.
	20	*
	21	* You should have received a copy of the GNU General Public License along with
	22	* this program; if not, write to the Free Software Foundation, Inc., 59
	23	* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	24	*/
	25
	26	/* Including this file like a header is a temporary hack, I promise. -- CHS */
	27	#ifndef ATLX_C
	28	#define ATLX_C
	29
	30	#include <linux/device.h>
	31	#include <linux/errno.h>
	32	#include <linux/etherdevice.h>
	33	#include <linux/if.h>
	34	#include <linux/netdevice.h>
	35	#include <linux/socket.h>
	36	#include <linux/sockios.h>
	37	#include <linux/spinlock.h>
	38	#include <linux/string.h>
	39	#include <linux/types.h>
	40	#include <linux/workqueue.h>
	41
	42	#include "atlx.h"
	43
	44	static struct atlx_spi_flash_dev flash_table[] = {
	45	/* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */
	46	{"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62},
	47	{"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60},
	48	{"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7},
	49	};
	50
	51	static int atlx_ioctl(struct net_device netdev, struct ifreq ifr, int cmd)
	52	{
	53	switch (cmd) {
	54	case SIOCGMIIPHY:
	55	case SIOCGMIIREG:
	56	case SIOCSMIIREG:
	57	return atlx_mii_ioctl(netdev, ifr, cmd);
	58	default:
	59	return -EOPNOTSUPP;
	60	}
	61	}
	62
	63	/*
	64	* atlx_set_mac - Change the Ethernet Address of the NIC
	65	* @netdev: network interface device structure
	66	* @p: pointer to an address structure
	67	*
	68	* Returns 0 on success, negative on failure
	69	*/
70	static int atlx_set_mac(struct net_device netdev, void p)
71	{
72	struct atlx_adapter *adapter = netdev_priv(netdev);
73	struct sockaddr *addr = p;
74
75	if (netif_running(netdev))
76	return -EBUSY;
77
78	if (!is_valid_ether_addr(addr->sa_data))
79	return -EADDRNOTAVAIL;
80
81	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
82	memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
83
84	atlx_set_mac_addr(&adapter->hw);
85	return 0;
86	}
87
88	static void atlx_check_for_link(struct atlx_adapter *adapter)
89	{
90	struct net_device *netdev = adapter->netdev;
91	u16 phy_data = 0;
92
93	spin_lock(&adapter->lock);
94	adapter->phy_timer_pending = false;
95	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
96	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
97	spin_unlock(&adapter->lock);
98
99	/* notify upper layer link down ASAP */
100	if (!(phy_data & BMSR_LSTATUS)) {
101	/* Link Down */
102	if (netif_carrier_ok(netdev)) {
103	/* old link state: Up */
104	dev_info(&adapter->pdev->dev, "%s link is down\n",
105	netdev->name);
106	adapter->link_speed = SPEED_0;
107	netif_carrier_off(netdev);
305282ba JC	108	}
	109	}
	110	schedule_work(&adapter->link_chg_task);
	111	}
	112
	113	/*
	114	* atlx_set_multi - Multicast and Promiscuous mode set
	115	* @netdev: network interface device structure
	116	*
	117	* The set_multi entry point is called whenever the multicast address
	118	* list or the network interface flags are updated. This routine is
	119	* responsible for configuring the hardware for proper multicast,
	120	* promiscuous mode, and all-multi behavior.
	121	*/
	122	static void atlx_set_multi(struct net_device *netdev)
	123	{
	124	struct atlx_adapter *adapter = netdev_priv(netdev);
	125	struct atlx_hw *hw = &adapter->hw;
22bedad3	126	struct netdev_hw_addr *ha;
305282ba JC	127	u32 rctl;
	128	u32 hash_value;
	129
	130	/* Check for Promiscuous and All Multicast modes */
	131	rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
	132	if (netdev->flags & IFF_PROMISC)
	133	rctl \|= MAC_CTRL_PROMIS_EN;
	134	else if (netdev->flags & IFF_ALLMULTI) {
	135	rctl \|= MAC_CTRL_MC_ALL_EN;
	136	rctl &= ~MAC_CTRL_PROMIS_EN;
	137	} else
	138	rctl &= ~(MAC_CTRL_PROMIS_EN \| MAC_CTRL_MC_ALL_EN);
	139
	140	iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
	141
	142	/* clear the old settings from the multicast hash table */
	143	iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
	144	iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
	145
	146	/* compute mc addresses' hash value ,and put it into hash table */
22bedad3 JP	147	netdev_for_each_mc_addr(ha, netdev) {
22bedad3 JP	148	hash_value = atlx_hash_mc_addr(hw, ha->addr);
305282ba JC	149	atlx_hash_set(hw, hash_value);
	150	}
	151	}
	152
	153	/*
	154	* atlx_irq_enable - Enable default interrupt generation settings
	155	* @adapter: board private structure
	156	*/
	157	static void atlx_irq_enable(struct atlx_adapter *adapter)
	158	{
	159	iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
	160	ioread32(adapter->hw.hw_addr + REG_IMR);
	161	}
	162
	163	/*
	164	* atlx_irq_disable - Mask off interrupt generation on the NIC
	165	* @adapter: board private structure
	166	*/
	167	static void atlx_irq_disable(struct atlx_adapter *adapter)
	168	{
	169	iowrite32(0, adapter->hw.hw_addr + REG_IMR);
	170	ioread32(adapter->hw.hw_addr + REG_IMR);
	171	synchronize_irq(adapter->pdev->irq);
	172	}
	173
	174	static void atlx_clear_phy_int(struct atlx_adapter *adapter)
	175	{
	176	u16 phy_data;
	177	unsigned long flags;
	178
	179	spin_lock_irqsave(&adapter->lock, flags);
	180	atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
	181	spin_unlock_irqrestore(&adapter->lock, flags);
	182	}
	183
305282ba JC	184	/*
	185	* atlx_tx_timeout - Respond to a Tx Hang
	186	* @netdev: network interface device structure
	187	*/
	188	static void atlx_tx_timeout(struct net_device *netdev)
	189	{
	190	struct atlx_adapter *adapter = netdev_priv(netdev);
	191	/* Do the reset outside of interrupt context */
	192	schedule_work(&adapter->tx_timeout_task);
	193	}
	194
	195	/*
	196	* atlx_link_chg_task - deal with link change event Out of interrupt context
	197	*/
	198	static void atlx_link_chg_task(struct work_struct *work)
	199	{
	200	struct atlx_adapter *adapter;
	201	unsigned long flags;
	202
	203	adapter = container_of(work, struct atlx_adapter, link_chg_task);
	204
	205	spin_lock_irqsave(&adapter->lock, flags);
	206	atlx_check_link(adapter);
	207	spin_unlock_irqrestore(&adapter->lock, flags);
	208	}
	209
	210	static void atlx_vlan_rx_register(struct net_device *netdev,
	211	struct vlan_group *grp)
	212	{
	213	struct atlx_adapter *adapter = netdev_priv(netdev);
	214	unsigned long flags;
	215	u32 ctrl;
	216
	217	spin_lock_irqsave(&adapter->lock, flags);
	218	/* atlx_irq_disable(adapter); FIXME: confirm/remove */
	219	adapter->vlgrp = grp;
	220
	221	if (grp) {
	222	/* enable VLAN tag insert/strip */
	223	ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
	224	ctrl \|= MAC_CTRL_RMV_VLAN;
	225	iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
	226	} else {
	227	/* disable VLAN tag insert/strip */
	228	ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
	229	ctrl &= ~MAC_CTRL_RMV_VLAN;
	230	iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
	231	}
	232
	233	/* atlx_irq_enable(adapter); FIXME */
	234	spin_unlock_irqrestore(&adapter->lock, flags);
	235	}
	236
	237	static void atlx_restore_vlan(struct atlx_adapter *adapter)
	238	{
	239	atlx_vlan_rx_register(adapter->netdev, adapter->vlgrp);
	240	}
	241
305282ba	242	#endif /* ATLX_C */