path: root/drivers/infiniband/hw/nes/nes_utils.c

/*
 * Copyright (c) 2006 - 2009 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;

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 +