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linux/drivers/net/netxen/netxen_nic_niu.c
Dhananjay Phadke 3d0a3cc9d7 netxen: fix bonding support 
o Pause traffic during mac addr change.
o Enable setting mac address for NX3031.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-06 15:33:36 -07:00

551 lines
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/*
* Copyright (C) 2003 - 2009 NetXen, Inc.
* 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.
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.
*
* Contact Information:
* info@netxen.com
* NetXen Inc,
* 18922 Forge Drive
* Cupertino, CA 95014-0701
*
*/
#include "netxen_nic.h"
#define NETXEN_GB_MAC_SOFT_RESET 0x80000000
#define NETXEN_GB_MAC_RESET_PROT_BLK 0x000F0000
#define NETXEN_GB_MAC_ENABLE_TX_RX 0x00000005
#define NETXEN_GB_MAC_PAUSED_FRMS 0x00000020
static long phy_lock_timeout = 100000000;
static int phy_lock(struct netxen_adapter *adapter)
{
int i;
int done = 0, timeout = 0;
while (!done) {
done = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM3_LOCK));
if (done == 1)
break;
if (timeout >= phy_lock_timeout) {
return -1;
}
timeout++;
if (!in_atomic())
schedule();
else {
for (i = 0; i < 20; i++)
cpu_relax();
}
}
NXWR32(adapter, NETXEN_PHY_LOCK_ID, PHY_LOCK_DRIVER);
return 0;
}
static int phy_unlock(struct netxen_adapter *adapter)
{
adapter->pci_read_immediate(adapter, NETXEN_PCIE_REG(PCIE_SEM3_UNLOCK));
return 0;
}
/*
* netxen_niu_gbe_phy_read - read a register from the GbE PHY via
* mii management interface.
*
* Note: The MII management interface goes through port 0.
* Individual phys are addressed as follows:
* @param phy [15:8] phy id
* @param reg [7:0] register number
*
* @returns 0 on success
* -1 on error
*
*/
int netxen_niu_gbe_phy_read(struct netxen_adapter *adapter, long reg,
__u32 * readval)
{
long timeout = 0;
long result = 0;
long restore = 0;
long phy = adapter->physical_port;
__u32 address;
__u32 command;
__u32 status;
__u32 mac_cfg0;
if (phy_lock(adapter) != 0) {
return -1;
}
/*
* MII mgmt all goes through port 0 MAC interface,
* so it cannot be in reset
*/
mac_cfg0 = NXRD32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0));
if (netxen_gb_get_soft_reset(mac_cfg0)) {
__u32 temp;
temp = 0;
netxen_gb_tx_reset_pb(temp);
netxen_gb_rx_reset_pb(temp);
netxen_gb_tx_reset_mac(temp);
netxen_gb_rx_reset_mac(temp);
if (NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0), temp))
return -EIO;
restore = 1;
}
address = 0;
netxen_gb_mii_mgmt_reg_addr(address, reg);
netxen_gb_mii_mgmt_phy_addr(address, phy);
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_ADDR(0), address))
return -EIO;
command = 0; /* turn off any prior activity */
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_COMMAND(0), command))
return -EIO;
/* send read command */
netxen_gb_mii_mgmt_set_read_cycle(command);
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_COMMAND(0), command))
return -EIO;
status = 0;
do {
status = NXRD32(adapter, NETXEN_NIU_GB_MII_MGMT_INDICATE(0));
timeout++;
} while ((netxen_get_gb_mii_mgmt_busy(status)
|| netxen_get_gb_mii_mgmt_notvalid(status))
&& (timeout++ < NETXEN_NIU_PHY_WAITMAX));
if (timeout < NETXEN_NIU_PHY_WAITMAX) {
*readval = NXRD32(adapter, NETXEN_NIU_GB_MII_MGMT_STATUS(0));
result = 0;
} else
result = -1;
if (restore)
if (NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0), mac_cfg0))
return -EIO;
phy_unlock(adapter);
return result;
}
/*
* netxen_niu_gbe_phy_write - write a register to the GbE PHY via
* mii management interface.
*
* Note: The MII management interface goes through port 0.
* Individual phys are addressed as follows:
* @param phy [15:8] phy id
* @param reg [7:0] register number
*
* @returns 0 on success
* -1 on error
*
*/
int netxen_niu_gbe_phy_write(struct netxen_adapter *adapter, long reg,
__u32 val)
{
long timeout = 0;
long result = 0;
long restore = 0;
long phy = adapter->physical_port;
__u32 address;
__u32 command;
__u32 status;
__u32 mac_cfg0;
/*
* MII mgmt all goes through port 0 MAC interface, so it
* cannot be in reset
*/
mac_cfg0 = NXRD32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0));
if (netxen_gb_get_soft_reset(mac_cfg0)) {
__u32 temp;
temp = 0;
netxen_gb_tx_reset_pb(temp);
netxen_gb_rx_reset_pb(temp);
netxen_gb_tx_reset_mac(temp);
netxen_gb_rx_reset_mac(temp);
if (NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0), temp))
return -EIO;
restore = 1;
}
command = 0; /* turn off any prior activity */
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_COMMAND(0), command))
return -EIO;
address = 0;
netxen_gb_mii_mgmt_reg_addr(address, reg);
netxen_gb_mii_mgmt_phy_addr(address, phy);
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_ADDR(0), address))
return -EIO;
if (NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_CTRL(0), val))
return -EIO;
status = 0;
do {
status = NXRD32(adapter, NETXEN_NIU_GB_MII_MGMT_INDICATE(0));
timeout++;
} while ((netxen_get_gb_mii_mgmt_busy(status))
&& (timeout++ < NETXEN_NIU_PHY_WAITMAX));
if (timeout < NETXEN_NIU_PHY_WAITMAX)
result = 0;
else
result = -EIO;
/* restore the state of port 0 MAC in case we tampered with it */
if (restore)
if (NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(0), mac_cfg0))
return -EIO;
return result;
}
int netxen_niu_xgbe_enable_phy_interrupts(struct netxen_adapter *adapter)
{
NXWR32(adapter, NETXEN_NIU_INT_MASK, 0x3f);
return 0;
}
int netxen_niu_gbe_enable_phy_interrupts(struct netxen_adapter *adapter)
{
int result = 0;
__u32 enable = 0;
netxen_set_phy_int_link_status_changed(enable);
netxen_set_phy_int_autoneg_completed(enable);
netxen_set_phy_int_speed_changed(enable);
if (0 !=
netxen_niu_gbe_phy_write(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_INT_ENABLE,
enable))
result = -EIO;
return result;
}
int netxen_niu_xgbe_disable_phy_interrupts(struct netxen_adapter *adapter)
{
NXWR32(adapter, NETXEN_NIU_INT_MASK, 0x7f);
return 0;
}
int netxen_niu_gbe_disable_phy_interrupts(struct netxen_adapter *adapter)
{
int result = 0;
if (0 !=
netxen_niu_gbe_phy_write(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_INT_ENABLE, 0))
result = -EIO;
return result;
}
static int netxen_niu_gbe_clear_phy_interrupts(struct netxen_adapter *adapter)
{
int result = 0;
if (0 !=
netxen_niu_gbe_phy_write(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_INT_STATUS,
-EIO))
result = -EIO;
return result;
}
/*
* netxen_niu_gbe_set_mii_mode- Set 10/100 Mbit Mode for GbE MAC
*
*/
static void netxen_niu_gbe_set_mii_mode(struct netxen_adapter *adapter,
int port, long enable)
{
NXWR32(adapter, NETXEN_NIU_MODE, 0x2);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x80000000);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x0000f0025);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_1(port), 0xf1ff);
NXWR32(adapter, NETXEN_NIU_GB0_GMII_MODE + (port << 3), 0);
NXWR32(adapter, NETXEN_NIU_GB0_MII_MODE + (port << 3), 1);
NXWR32(adapter, (NETXEN_NIU_GB0_HALF_DUPLEX + port * 4), 0);
NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_CONFIG(port), 0x7);
if (enable) {
/*
* Do NOT enable flow control until a suitable solution for
* shutting down pause frames is found.
*/
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x5);
}
if (netxen_niu_gbe_enable_phy_interrupts(adapter))
printk(KERN_ERR "ERROR enabling PHY interrupts\n");
if (netxen_niu_gbe_clear_phy_interrupts(adapter))
printk(KERN_ERR "ERROR clearing PHY interrupts\n");
}
/*
* netxen_niu_gbe_set_gmii_mode- Set GbE Mode for GbE MAC
*/
static void netxen_niu_gbe_set_gmii_mode(struct netxen_adapter *adapter,
int port, long enable)
{
NXWR32(adapter, NETXEN_NIU_MODE, 0x2);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x80000000);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x0000f0025);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_1(port), 0xf2ff);
NXWR32(adapter, NETXEN_NIU_GB0_MII_MODE + (port << 3), 0);
NXWR32(adapter, NETXEN_NIU_GB0_GMII_MODE + (port << 3), 1);
NXWR32(adapter, (NETXEN_NIU_GB0_HALF_DUPLEX + port * 4), 0);
NXWR32(adapter, NETXEN_NIU_GB_MII_MGMT_CONFIG(port), 0x7);
if (enable) {
/*
* Do NOT enable flow control until a suitable solution for
* shutting down pause frames is found.
*/
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), 0x5);
}
if (netxen_niu_gbe_enable_phy_interrupts(adapter))
printk(KERN_ERR "ERROR enabling PHY interrupts\n");
if (netxen_niu_gbe_clear_phy_interrupts(adapter))
printk(KERN_ERR "ERROR clearing PHY interrupts\n");
}
int netxen_niu_gbe_init_port(struct netxen_adapter *adapter, int port)
{
int result = 0;
__u32 status;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
return 0;
if (adapter->disable_phy_interrupts)
adapter->disable_phy_interrupts(adapter);
mdelay(2);
if (0 == netxen_niu_gbe_phy_read(adapter,
NETXEN_NIU_GB_MII_MGMT_ADDR_PHY_STATUS, &status)) {
if (netxen_get_phy_link(status)) {
if (netxen_get_phy_speed(status) == 2) {
netxen_niu_gbe_set_gmii_mode(adapter, port, 1);
} else if ((netxen_get_phy_speed(status) == 1)
|| (netxen_get_phy_speed(status) == 0)) {
netxen_niu_gbe_set_mii_mode(adapter, port, 1);
} else {
result = -1;
}
} else {
/*
* We don't have link. Cable must be unconnected.
* Enable phy interrupts so we take action when
* plugged in.
*/
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port),
NETXEN_GB_MAC_SOFT_RESET);
NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port),
NETXEN_GB_MAC_RESET_PROT_BLK |
NETXEN_GB_MAC_ENABLE_TX_RX |
NETXEN_GB_MAC_PAUSED_FRMS);
if (netxen_niu_gbe_clear_phy_interrupts(adapter))
printk(KERN_ERR
"ERROR clearing PHY interrupts\n");
if (netxen_niu_gbe_enable_phy_interrupts(adapter))
printk(KERN_ERR
"ERROR enabling PHY interrupts\n");
if (netxen_niu_gbe_clear_phy_interrupts(adapter))
printk(KERN_ERR
"ERROR clearing PHY interrupts\n");
result = -1;
}
} else {
result = -EIO;
}
return result;
}
int netxen_niu_xg_init_port(struct netxen_adapter *adapter, int port)
{
if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
NXWR32(adapter, NETXEN_NIU_XGE_CONFIG_1+(0x10000*port), 0x1447);
NXWR32(adapter, NETXEN_NIU_XGE_CONFIG_0+(0x10000*port), 0x5);
}
return 0;
}
/* Disable a GbE interface */
int netxen_niu_disable_gbe_port(struct netxen_adapter *adapter)
{
__u32 mac_cfg0;
u32 port = adapter->physical_port;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
return 0;
if (port > NETXEN_NIU_MAX_GBE_PORTS)
return -EINVAL;
mac_cfg0 = 0;
netxen_gb_soft_reset(mac_cfg0);
if (NXWR32(adapter, NETXEN_NIU_GB_MAC_CONFIG_0(port), mac_cfg0))
return -EIO;
return 0;
}
/* Disable an XG interface */
int netxen_niu_disable_xg_port(struct netxen_adapter *adapter)
{
__u32 mac_cfg;
u32 port = adapter->physical_port;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
return 0;
if (port > NETXEN_NIU_MAX_XG_PORTS)
return -EINVAL;
mac_cfg = 0;
if (NXWR32(adapter,
NETXEN_NIU_XGE_CONFIG_0 + (0x10000 * port), mac_cfg))
return -EIO;
return 0;
}
/* Set promiscuous mode for a GbE interface */
int netxen_niu_set_promiscuous_mode(struct netxen_adapter *adapter,
u32 mode)
{
__u32 reg;
u32 port = adapter->physical_port;
if (port > NETXEN_NIU_MAX_GBE_PORTS)
return -EINVAL;
/* save previous contents */
reg = NXRD32(adapter, NETXEN_NIU_GB_DROP_WRONGADDR);
if (mode == NETXEN_NIU_PROMISC_MODE) {
switch (port) {
case 0:
netxen_clear_gb_drop_gb0(reg);
break;
case 1:
netxen_clear_gb_drop_gb1(reg);
break;
case 2:
netxen_clear_gb_drop_gb2(reg);
break;
case 3:
netxen_clear_gb_drop_gb3(reg);
break;
default:
return -EIO;
}
} else {
switch (port) {
case 0:
netxen_set_gb_drop_gb0(reg);
break;
case 1:
netxen_set_gb_drop_gb1(reg);
break;
case 2:
netxen_set_gb_drop_gb2(reg);
break;
case 3:
netxen_set_gb_drop_gb3(reg);
break;
default:
return -EIO;
}
}
if (NXWR32(adapter, NETXEN_NIU_GB_DROP_WRONGADDR, reg))
return -EIO;
return 0;
}
int netxen_niu_xg_set_promiscuous_mode(struct netxen_adapter *adapter,
u32 mode)
{
__u32 reg;
u32 port = adapter->physical_port;
if (port > NETXEN_NIU_MAX_XG_PORTS)
return -EINVAL;
reg = NXRD32(adapter, NETXEN_NIU_XGE_CONFIG_1 + (0x10000 * port));
if (mode == NETXEN_NIU_PROMISC_MODE)
reg = (reg | 0x2000UL);
else
reg = (reg & ~0x2000UL);
if (mode == NETXEN_NIU_ALLMULTI_MODE)
reg = (reg | 0x1000UL);
else
reg = (reg & ~0x1000UL);
NXWR32(adapter, NETXEN_NIU_XGE_CONFIG_1 + (0x10000 * port), reg);
return 0;
}
int netxen_p2_nic_set_mac_addr(struct netxen_adapter *adapter, u8 *addr)
{
u32 mac_hi, mac_lo;
u32 reg_hi, reg_lo;
u8 phy = adapter->physical_port;
u8 phy_count = (adapter->ahw.port_type == NETXEN_NIC_XGBE) ?
NETXEN_NIU_MAX_XG_PORTS : NETXEN_NIU_MAX_GBE_PORTS;
if (phy >= phy_count)
return -EINVAL;
mac_lo = ((u32)addr[0] << 16) | ((u32)addr[1] << 24);
mac_hi = addr[2] | ((u32)addr[3] << 8) |
((u32)addr[4] << 16) | ((u32)addr[5] << 24);
if (adapter->ahw.port_type == NETXEN_NIC_XGBE) {
reg_lo = NETXEN_NIU_XGE_STATION_ADDR_0_1 + (0x10000 * phy);
reg_hi = NETXEN_NIU_XGE_STATION_ADDR_0_HI + (0x10000 * phy);
} else {
reg_lo = NETXEN_NIU_GB_STATION_ADDR_1(phy);
reg_hi = NETXEN_NIU_GB_STATION_ADDR_0(phy);
}
/* write twice to flush */
if (NXWR32(adapter, reg_lo, mac_lo) || NXWR32(adapter, reg_hi, mac_hi))
return -EIO;
if (NXWR32(adapter, reg_lo, mac_lo) || NXWR32(adapter, reg_hi, mac_hi))
return -EIO;
return 0;
}
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