/*
* Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <linux/slab.h>
#include <linux/crc32.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include "nes.h"
static u16 nes_read16_eeprom(void __iomem *addr, u16 offset);
u32 mh_detected;
u32 mh_pauses_sent;
static u32 nes_set_pau(struct nes_device *nesdev)
{
u32 ret = 0;
u32 counter;
nes_write_indexed(nesdev, NES_IDX_GPR2, NES_ENABLE_PAU);
nes_write_indexed(nesdev, NES_IDX_GPR_TRIGGER, 1);
for (counter = 0; counter < NES_PAU_COUNTER; counter++) {
udelay(30);
if (!nes_read_indexed(nesdev, NES_IDX_GPR2)) {
printk(KERN_INFO PFX "PAU is supported.\n");
break;
}
nes_write_indexed(nesdev, NES_IDX_GPR_TRIGGER, 1);
}
if (counter == NES_PAU_COUNTER) {
printk(KERN_INFO PFX "PAU is not supported.\n");
return -EPERM;
}
return ret;
}
/**
* nes_read_eeprom_values -
*/
int nes_read_eeprom_values(struct nes_device *nesdev, struct nes_adapter *nesadapter)
{
u32 mac_addr_low;
u16 mac_addr_high;
u16 eeprom_data;
u16 eeprom_offset;
u16 next_section_address;
u16 sw_section_ver;
u8 major_ver = 0;
u8 minor_ver = 0;
/* TODO: deal with EEPROM endian issues */
if (nesadapter->firmware_eeprom_offset == 0) {
/* Read the EEPROM Parameters */
eeprom_data = nes_read16_eeprom(nesdev->regs, 0);
nes_debug(NES_DBG_HW, "EEPROM Offset 0 = 0x%04X\n", eeprom_data);
eeprom_offset = 2 + (((eeprom_data & 0x007f) << 3) <<
((eeprom_data & 0x0080) >> 7));
nes_debug(NES_DBG_HW, "Firmware Offset = 0x%04X\n", eeprom_offset);
nesadapter->firmware_eeprom_offset = eeprom_offset;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 4);
if (eeprom_data != 0x5746) {
nes_debug(NES_DBG_HW, "Not a valid Firmware Image = 0x%04X\n", eeprom_data);
return -1;
}
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
eeprom_offset += ((eeprom_data & 0x00ff) << 3) << ((eeprom_data & 0x0100) >> 8);
nes_debug(NES_DBG_HW, "Software Offset = 0x%04X\n", eeprom_offset);
nesadapter->software_eeprom_offset = eeprom_offset;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 4);
if (eeprom_data != 0x5753) {
printk("Not a valid Software Image = 0x%04X\n", eeprom_data);
return -1;
}
sw_section_ver = nes_read16_eeprom(nesdev->regs, nesadapter->software_eeprom_offset + 6);
nes_debug(NES_DBG_HW, "Software section version number = 0x%04X\n",
sw_section_ver);
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + (((eeprom_data & 0x00ff) << 3) <<
((eeprom_data & 0x0100) >> 8));
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x414d) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x414d but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_offset = next_section_address;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + (((eeprom_data & 0x00ff) << 3) <<
((eeprom_data & 0x0100) >> 8));
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x4f52) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x4f52 but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_offset = next_section_address;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3);
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x5746) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x5746 but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_offset = next_section_address;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3);
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x5753) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x5753 but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_offset = next_section_address;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3);
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x414d) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x414d but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_offset = next_section_address;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset + 2);
nes_debug(NES_DBG_HW, "EEPROM Offset %u (next section) = 0x%04X\n",
eeprom_offset + 2, eeprom_data);
next_section_address = eeprom_offset + ((eeprom_data & 0x00ff) << 3);
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 4);
if (eeprom_data != 0x464e) {
nes_debug(NES_DBG_HW, "EEPROM Changed offset should be 0x464e but was 0x%04X\n",
eeprom_data);
goto no_fw_rev;
}
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 8);
printk(PFX "Firmware version %u.%u\n", (u8)(eeprom_data>>8), (u8)eeprom_data);
major_ver = (u8)(eeprom_data >> 8);
minor_ver = (u8)(eeprom_data);
if (nes_drv_opt & NES_DRV_OPT_DISABLE_VIRT_WQ) {
nes_debug(NES_DBG_HW, "Virtual WQs have been disabled\n");
} else if (((major_ver == 2) && (minor_ver > 21)) || ((major_ver > 2) && (major_ver != 255))) {
nesadapter->virtwq = 1;
}
if (((major_ver == 3) && (minor_ver >= 16)) || (major_ver > 3))
nesadapter->send_term_ok = 1;
if (nes_drv_opt & NES_DRV_OPT_ENABLE_PAU) {
if (!nes_set_pau(nesdev))
nesadapter->allow_unaligned_fpdus = 1;
}
nesadapter->firmware_version = (((u32)(u8)(eeprom_data>>8)) << 16) +
(u32)((u8)eeprom_data);
eeprom_data = nes_read16_eeprom(nesdev->regs, next_section_address + 10);
printk(PFX "EEPROM version %u.%u\n", (u8)(eeprom_data>>8), (u8)eeprom_data);
nesadapter->eeprom_version = (((u32)(u8)(eeprom_data>>8)) << 16) +
(u32)((u8)eeprom_data);
no_fw_rev:
/* eeprom is valid */
eeprom_offset = nesadapter->software_eeprom_offset;
eeprom_offset += 8;
nesadapter->netdev_max = (u8)nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
mac_addr_high = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
mac_addr_low = (u32)nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
mac_addr_low <<= 16;
mac_addr_low += (u32)nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "Base MAC Address = 0x%04X%08X\n",
mac_addr_high, mac_addr_low);
nes_debug(NES_DBG_HW, "MAC Address count = %u\n", nesadapter->netdev_max);
nesadapter->mac_addr_low = mac_addr_low;
nesadapter->mac_addr_high = mac_addr_high;
/* Read the Phy Type array */
eeprom_offset += 10;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->phy_type[0] = (u8)(eeprom_data >> 8);
nesadapter->phy_type[1] = (u8)eeprom_data;
/* Read the port array */
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->phy_type[2] = (u8)(eeprom_data >> 8);
nesadapter->phy_type[3] = (u8)eeprom_data;
/* port_count is set by soft reset reg */
nes_debug(NES_DBG_HW, "port_count = %u, port 0 -> %u, port 1 -> %u,"
" port 2 -> %u, port 3 -> %u\n",
nesadapter->port_count,
nesadapter->phy_type[0], nesadapter->phy_type[1],
nesadapter->phy_type[2], nesadapter->phy_type[3]);
/* Read PD config array */
eeprom_offset += 10;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_size[0] = eeprom_data;
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_base[0] = eeprom_data;
nes_debug(NES_DBG_HW, "PD0 config, size=0x%04x, base=0x%04x\n",
nesadapter->pd_config_size[0], nesadapter->pd_config_base[0]);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_size[1] = eeprom_data;
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_base[1] = eeprom_data;
nes_debug(NES_DBG_HW, "PD1 config, size=0x%04x, base=0x%04x\n",
nesadapter->pd_config_size[1], nesadapter->pd_config_base[1]);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_size[2] = eeprom_data;
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_base[2] = eeprom_data;
nes_debug(NES_DBG_HW, "PD2 config, size=0x%04x, base=0x%04x\n",
nesadapter->pd_config_size[2], nesadapter->pd_config_base[2]);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_size[3] = eeprom_data;
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->pd_config_base[3] = eeprom_data;
nes_debug(NES_DBG_HW, "PD3 config, size=0x%04x, base=0x%04x\n",
nesadapter->pd_config_size[3], nesadapter->pd_config_base[3]);
/* Read Rx Pool Size */
eeprom_offset += 22; /* 46 */
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->rx_pool_size = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "rx_pool_size = 0x%08X\n", nesadapter->rx_pool_size);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->tx_pool_size = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "tx_pool_size = 0x%08X\n", nesadapter->tx_pool_size);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->rx_threshold = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "rx_threshold = 0x%08X\n", nesadapter->rx_threshold);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->tcp_timer_core_clk_divisor = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "tcp_timer_core_clk_divisor = 0x%08X\n",
nesadapter->tcp_timer_core_clk_divisor);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->iwarp_config = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "iwarp_config = 0x%08X\n", nesadapter->iwarp_config);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->cm_config = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "cm_config = 0x%08X\n", nesadapter->cm_config);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->sws_timer_config = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "sws_timer_config = 0x%08X\n", nesadapter->sws_timer_config);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->tcp_config1 = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "tcp_config1 = 0x%08X\n", nesadapter->tcp_config1);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->wqm_wat = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "wqm_wat = 0x%08X\n", nesadapter->wqm_wat);
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
eeprom_offset += 2;
nesadapter->core_clock = (((u32)eeprom_data) << 16) +
nes_read16_eeprom(nesdev->regs, eeprom_offset);
nes_debug(NES_DBG_HW, "core_clock = 0x%08X\n", nesadapter->core_clock);
if ((sw_section_ver) && (nesadapter->hw_rev != NE020_REV)) {
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->phy_index[0] = (eeprom_data & 0xff00)>>8;
nesadapter->phy_index[1] = eeprom_data & 0x00ff;
eeprom_offset += 2;
eeprom_data = nes_read16_eeprom(nesdev->regs, eeprom_offset);
nesadapter->phy_index[2] = (eeprom_data & 0xff00)>>8;
nesadapter->phy_index[3] = eeprom_data & 0x00ff;
} else {
nesadapter->phy_index[0] = 4;
nesadapter->phy_index[1] = 5;
nesadapter->phy_index[2] = 6;
nesadapter->phy_index[3] = 7;
}
nes_debug(NES_DBG_HW, "Phy address map = 0 > %u, 1 > %u, 2 > %u, 3 > %u\n",
nesadapter->phy_index[0],nesadapter->phy_index[1],
nesadapter->phy_index[2],nesadapter->phy_index[3]);
}
return 0;
}
/**
* nes_read16_eeprom
*/
static u16 nes_read16_eeprom(void __iomem *addr, u16 offset)
{
writel(NES_EEPROM_READ_REQUEST + (offset >> 1),
(void __iomem *)addr + NES_EEPROM_COMMAND);
do {
} while (readl((void __iomem *)addr + NES_EEPROM_COMMAND) &
NES_EEPROM_READ_REQUEST);
return readw((void __iomem *)addr + NES_EEPROM_DATA);
}
/**
* nes_write_1G_phy_reg
*/
void nes_write_1G_phy_reg(struct nes_device *nesdev, u8 phy_reg, u8 phy_addr, u16 data)
{
u32 u32temp;
u32 counter;
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x50020000 | data | ((u32)phy_reg << 18) | ((u32)phy_addr << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
/* nes_debug(NES_DBG_PHY, "Phy interrupt status = 0x%X.\n", u32temp); */
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1))
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
}
/**
* nes_read_1G_phy_reg
* This routine only issues the read, the data must be read
* separately.
*/
void nes_read_1G_phy_reg(struct nes_device *nesdev, u8 phy_reg, u8 phy_addr, u16 *data)
{
u32 u32temp;
u32 counter;
/* nes_debug(NES_DBG_PHY, "phy addr = %d, mac_index = %d\n",
phy_addr, nesdev->mac_index); */
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x60020000 | ((u32)phy_reg << 18) | ((u32)phy_addr << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
/* nes_debug(NES_DBG_PHY, "Phy interrupt status = 0x%X.\n", u32temp); */
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1)) {
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
*data = 0xffff;
} else {
*data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
}
}
/**
* nes_write_10G_phy_reg
*/
void nes_write_10G_phy_reg(struct nes_device *nesdev, u16 phy_addr, u8 dev_addr, u16 phy_reg,
u16 data)
{
u32 port_addr;
u32 u32temp;
u32 counter;
port_addr = phy_addr;
/* set address */
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x00020000 | (u32)phy_reg | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1))
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
/* set data */
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x10020000 | (u32)data | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1))
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
}
/**
* nes_read_10G_phy_reg
* This routine only issues the read, the data must be read
* separately.
*/
void nes_read_10G_phy_reg(struct nes_device *nesdev, u8 phy_addr, u8 dev_addr, u16 phy_reg)
{
u32 port_addr;
u32 u32temp;
u32 counter;
port_addr = phy_addr;
/* set address */
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x00020000 | (u32)phy_reg | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1))
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
/* issue read */
nes_write_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL,
0x30020000 | (((u32)dev_addr) << 18) | (((u32)port_addr) << 23));
for (counter = 0; counter < 100 ; counter++) {
udelay(30);
u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS);
if (u32temp & 1) {
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS, 1);
break;
}
}
if (!(u32temp & 1))
nes_debug(NES_DBG_PHY, "Phy is not responding. interrupt status = 0x%X.\n",
u32temp);
}
/**
* nes_get_cqp_request
*/
struct nes_cqp_request *nes_get_cqp_request(struct nes_device *nesdev)
{
unsigned long flags;
struct nes_cqp_request *cqp_request = NULL;
if (!list_empty(&nesdev->cqp_avail_reqs)) {
spin_lock_irqsave(&nesdev->cqp.lock, flags);
if (!list_empty(&nesdev->cqp_avail_reqs)) {
cqp_request = list_entry(nesdev->cqp_avail_reqs.next,
struct nes_cqp_request, list);
list_del_init(&cqp_request->list);
}
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
}
if (cqp_request == NULL) {
cqp_request = kzalloc(sizeof(struct nes_cqp_request), GFP_ATOMIC);
if (cqp_request) {
cqp_request->dynamic = 1;
INIT_LIST_HEAD(&cqp_request->list);
}
}
if (cqp_request) {
init_waitqueue_head(&cqp_request->waitq);
cqp_request->waiting = 0;
cqp_request->request_done = 0;
cqp_request->callback = 0;
init_waitqueue_head(&cqp_request->waitq);
nes_debug(NES_DBG_CQP, "Got cqp request %p from the available list \n",
cqp_request);
} else
printk(KERN_ERR PFX "%s: Could not allocated a CQP request.\n",
__func__);
return cqp_request;
}
void nes_free_cqp_request(struct nes_device *nesdev,
struct nes_cqp_request *cqp_request)
{
unsigned long flags;
nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X) freed.\n",
cqp_request,
le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_OPCODE_IDX]) & 0x3f);
if (cqp_request->dynamic) {
kfree(cqp_request);
} else {
spin_lock_irqsave(&nesdev->cqp.lock, flags);
list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
}
}
void nes_put_cqp_request(struct nes_device *nesdev,
struct nes_cqp_request *cqp_request)
{
if (atomic_dec_and_test(&cqp_request->refcount))
nes_free_cqp_request(nesdev, cqp_request);
}
/**
* nes_post_cqp_request
*/
void nes_post_cqp_request(struct nes_device *nesdev,
struct nes_cqp_request *cqp_request)
{
struct nes_hw_cqp_wqe *cqp_wqe;
unsigned long flags;
u32 cqp_head;
u64 u64temp;
u32 opcode;
int ctx_index = NES_CQP_WQE_COMP_CTX_LOW_IDX;
spin_lock_irqsave(&nesdev->cqp.lock, flags);
if (((((nesdev->cqp.sq_tail+(nesdev->cqp.sq_size*2))-nesdev->cqp.sq_head) &
(nesdev->cqp.sq_size - 1)) != 1)
&& (list_empty(&nesdev->cqp_pending_reqs))) {
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
memcpy(cqp_wqe, &cqp_request->cqp_wqe, sizeof(*cqp_wqe));
opcode = le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]);
if ((opcode & NES_CQP_OPCODE_MASK) == NES_CQP_DOWNLOAD_SEGMENT)
ctx_index = NES_CQP_WQE_DL_COMP_CTX_LOW_IDX;
barrier();
u64temp = (unsigned long)cqp_request;
set_wqe_64bit_value(cqp_wqe->wqe_words, ctx_index, u64temp);
nes_debug(NES_DBG_CQP, "CQP request (opcode 0x%02X), line 1 = 0x%08X put on CQPs SQ,"
" request = %p, cqp_head = %u, cqp_tail = %u, cqp_size = %u,"
" waiting = %d, refcount = %d.\n",
opcode & NES_CQP_OPCODE_MASK,
le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX]), cqp_request,
nesdev->cqp.sq_head, nesdev->cqp.sq_tail, nesdev->cqp.sq_size,
cqp_request->waiting, atomic_read(&cqp_request->refcount));
barrier();
/* Ring doorbell (1 WQEs) */
nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x01800000 | nesdev->cqp.qp_id);
barrier();
} else {
nes_debug(NES_DBG_CQP, "CQP request %p (opcode 0x%02X), line 1 = 0x%08X"
" put on the pending queue.\n",
cqp_request,
le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_OPCODE_IDX])&0x3f,
le32_to_cpu(cqp_request->cqp_wqe.wqe_words[NES_CQP_WQE_ID_IDX]));
list_add_tail(&cqp_request->list, &nesdev->cqp_pending_reqs);
}
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
return;
}
/**
* nes_arp_table
*/
int nes_arp_table(struct nes_device *nesdev, u32 ip_addr, u8 *mac_addr, u32 action)
{
struct nes_adapter *nesadapter = nesdev->nesadapter;
int arp_index;
int err = 0;
__be32 tmp_addr;
for (arp_index = 0; (u32) arp_index < nesadapter->arp_table_size; arp_index++) {
if (nesadapter->arp_table[arp_index].ip_addr == ip_addr)
break;
}
if (action == NES_ARP_ADD) {
if (arp_index != nesadapter->arp_table_size) {
return -1;
}
arp_index = 0;
err = nes_alloc_resource(nesadapter, nesadapter->allocated_arps,
nesadapter->arp_table_size, (u32 *)&arp_index, &nesadapter->next_arp_index);
if (err) {
nes_debug(NES_DBG_NETDEV, "nes_alloc_resource returned error = %u\n", err);
return err;
}
nes_debug(NES_DBG_NETDEV, "ADD, arp_index=%d\n", arp_index);
nesadapter->arp_table[arp_index].ip_addr = ip_addr;
memcpy(nesadapter->arp_table[arp_index].mac_addr, mac_addr, ETH_ALEN);
return arp_index;
}
/* DELETE or RESOLVE */
if (arp_index == nesadapter->arp_table_size) {
tmp_addr = cpu_to_be32(ip_addr);
nes_debug(NES_DBG_NETDEV, "MAC for %pI4 not in ARP table - cannot %s\n",
&tmp_addr, action == NES_ARP_RESOLVE ? "resolve" : "delete");
return -1;
}
if (action == NES_ARP_RESOLVE) {
nes_debug(NES_DBG_NETDEV, "RESOLVE, arp_index=%d\n", arp_index);
return arp_index;
}
if (action == NES_ARP_DELETE) {
nes_debug(NES_DBG_NETDEV, "DELETE, arp_index=%d\n", arp_index);
nesadapter->arp_table[arp_index].ip_addr = 0;
memset(nesadapter->arp_table[arp_index].mac_addr, 0x00, ETH_ALEN);
nes_free_resource(nesadapter, nesadapter->allocated_arps, arp_index);
return arp_index;
}
return -1;
}
/**
* nes_mh_fix
*/
void nes_mh_fix(unsigned long parm)
{
unsigned long flags;
struct nes_device *nesdev = (struct nes_device *)parm;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_vnic *nesvnic;
u32 used_chunks_tx;
u32 temp_used_chunks_tx;
u32 temp_last_used_chunks_tx;
u32 used_chunks_mask;
u32 mac_tx_frames_low;
u32 mac_tx_frames_high;
u32 mac_tx_pauses;
u32 serdes_status;
u32 reset_value;
u32 tx_control;
u32 tx_config;
u32 tx_pause_quanta;
u32 rx_control;
u32 rx_config;
u32 mac_exact_match;
u32 mpp_debug;
u32 i=0;
u32 chunks_tx_progress = 0;
spin_lock_irqsave(&nesadapter->phy_lock, flags);
if ((nesadapter->mac_sw_state[0] != NES_MAC_SW_IDLE) || (nesadapter->mac_link_down[0])) {
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
goto no_mh_work;
}
nesadapter->mac_sw_state[0] = NES_MAC_SW_MH;
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
do {
mac_tx_frames_low = nes_read_indexed(nesdev, NES_IDX_MAC_TX_FRAMES_LOW);
mac_tx_frames_high = nes_read_indexed(nesdev, NES_IDX_MAC_TX_FRAMES_HIGH);
mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES);
used_chunks_tx = nes_read_indexed(nesdev, NES_IDX_USED_CHUNKS_TX);
nesdev->mac_pause_frames_sent += mac_tx_pauses;
used_chunks_mask = 0;
temp_used_chunks_tx = used_chunks_tx;
temp_last_used_chunks_tx = nesdev->last_used_chunks_tx;
if (nesdev->netdev[0]) {
nesvnic = netdev_priv(nesdev->netdev[0]);
} else {
break;
}
for (i=0; i<4; i++) {
used_chunks_mask <<= 8;
if (nesvnic->qp_nic_index[i] != 0xff) {
used_chunks_mask |= 0xff;
if ((temp_used_chunks_tx&0xff)<(temp_last_used_chunks_tx&0xff)) {
chunks_tx_progress = 1;
}
}
temp_used_chunks_tx >>= 8;
temp_last_used_chunks_tx >>= 8;
}
if ((mac_tx_frames_low) || (mac_tx_frames_high) ||
(!(used_chunks_tx&used_chunks_mask)) ||
(!(nesdev->last_used_chunks_tx&used_chunks_mask)) ||
(chunks_tx_progress) ) {
nesdev->last_used_chunks_tx = used_chunks_tx;
break;
}
nesdev->last_used_chunks_tx = used_chunks_tx;
barrier();
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, 0x00000005);
mh_pauses_sent++;
mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES);
if (mac_tx_pauses) {
nesdev->mac_pause_frames_sent += mac_tx_pauses;
break;
}
tx_control = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONTROL);
tx_config = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONFIG);
tx_pause_quanta = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_QUANTA);
rx_control = nes_read_indexed(nesdev, NES_IDX_MAC_RX_CONTROL);
rx_config = nes_read_indexed(nesdev, NES_IDX_MAC_RX_CONFIG);
mac_exact_match = nes_read_indexed(nesdev, NES_IDX_MAC_EXACT_MATCH_BOTTOM);
mpp_debug = nes_read_indexed(nesdev, NES_IDX_MPP_DEBUG);
/* one last ditch effort to avoid a false positive */
mac_tx_pauses = nes_read_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_FRAMES);
if (mac_tx_pauses) {
nesdev->last_mac_tx_pauses = nesdev->mac_pause_frames_sent;
nes_debug(NES_DBG_HW, "failsafe caught slow outbound pause\n");
break;
}
mh_detected++;
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, 0x00000000);
reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value | 0x0000001d);
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
& 0x00000040) != 0x00000040) && (i++ < 5000)) {
/* mdelay(1); */
}
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, 0x00000008);
serdes_status = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x000bdef7);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE0, 0x9ce73000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE0, 0x0ff00000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET0, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS0, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL0, 0x00000000);
if (nesadapter->OneG_Mode) {
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0182222);
} else {
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0042222);
}
serdes_status = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_STATUS0);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000ff);
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONTROL, tx_control);
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, tx_config);
nes_write_indexed(nesdev, NES_IDX_MAC_TX_PAUSE_QUANTA, tx_pause_quanta);
nes_write_indexed(nesdev, NES_IDX_MAC_RX_CONTROL, rx_control);
nes_write_indexed(nesdev, NES_IDX_MAC_RX_CONFIG, rx_config);
nes_write_indexed(nesdev, NES_IDX_MAC_EXACT_MATCH_BOTTOM, mac_exact_match);
nes_write_indexed(nesdev, NES_IDX_MPP_DEBUG, mpp_debug);
} while (0);
nesadapter->mac_sw_state[0] = NES_MAC_SW_IDLE;
no_mh_work:
nesdev->nesadapter->mh_timer.expires = jiffies + (HZ/5);
add_timer(&nesdev->nesadapter->mh_timer);
}
/**
* nes_clc
*/
void nes_clc(unsigned long parm)
{
unsigned long flags;
struct nes_device *nesdev = (struct nes_device *)parm;
struct nes_adapter *nesadapter = nesdev->nesadapter;
spin_lock_irqsave(&nesadapter->phy_lock, flags);
nesadapter->link_interrupt_count[0] = 0;
nesadapter->link_interrupt_count[1] = 0;
nesadapter->link_interrupt_count[2] = 0;
nesadapter->link_interrupt_count[3] = 0;
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
nesadapter->lc_timer.expires = jiffies + 3600 * HZ; /* 1 hour */
add_timer(&nesadapter->lc_timer);
}
/**
* nes_dump_mem
*/
void nes_dump_mem(unsigned int dump_debug_level, void *addr, int length)
{
char xlate[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'};
char *ptr;
char hex_buf[80];
char ascii_buf[20];
int num_char;
int num_ascii;
int num_hex;
if (!(nes_debug_level & dump_debug_level)) {
return;
}
ptr = addr;
if (length > 0x100) {
nes_debug(dump_debug_level, "Length truncated from %x to %x\n", length, 0x100);
length = 0x100;
}
nes_debug(dump_debug_level, "Address=0x%p, length=0x%x (%d)\n", ptr, length, length);
memset(ascii_buf, 0, 20);
memset(hex_buf, 0, 80);
num_ascii = 0;
num_hex = 0;
for (num_char = 0; num_char < length; num_char++) {
if (num_ascii == 8) {
ascii_buf[num_ascii++] = ' ';
hex_buf[num_hex++] = '-';
hex_buf[num_hex++] = ' ';
}
if (*ptr < 0x20 || *ptr > 0x7e)
ascii_buf[num_ascii++] = '.';
else
ascii_buf[num_ascii++] = *ptr;
hex_buf[num_hex++] = xlate[((*ptr & 0xf0) >> 4)];
hex_buf[num_hex++] = xlate[*ptr & 0x0f];
hex_buf[num_hex++] = ' ';
ptr++;
if (num_ascii >= 17) {
/* output line and reset */
nes_debug(dump_debug_level, " %s | %s\n", hex_buf, ascii_buf);
memset(ascii_buf, 0, 20);
memset(hex_buf, 0, 80);
num_ascii = 0;
num_hex = 0;
}
}
/* output the rest */
if (num_ascii) {
while (num_ascii < 17) {
if (num_ascii == 8) {
hex_buf[num_hex++] = ' ';
hex_buf[num_hex++] = ' ';
}
hex_buf[num_hex++] = ' ';
hex_buf[num_hex++] = ' ';
hex_buf[num_hex++] = ' ';
num_ascii++;
}
nes_debug(dump_debug_level, " %s | %s\n", hex_buf, ascii_buf);
}
}
