ipath_eeprom.c revision f2080fa3c6098dedfb9b599bdaedd07be2ea4646
1108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/* 2108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. 3108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 4108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * This software is available to you under a choice of one of two 5108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * licenses. You may choose to be licensed under the terms of the GNU 6108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * General Public License (GPL) Version 2, available from the file 7108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * COPYING in the main directory of this source tree, or the 8108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * OpenIB.org BSD license below: 9108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 10108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Redistribution and use in source and binary forms, with or 11108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * without modification, are permitted provided that the following 12108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * conditions are met: 13108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 14108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * - Redistributions of source code must retain the above 15108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * copyright notice, this list of conditions and the following 16108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * disclaimer. 17108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 18108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * - Redistributions in binary form must reproduce the above 19108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * copyright notice, this list of conditions and the following 20108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * disclaimer in the documentation and/or other materials 21108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * provided with the distribution. 22108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 23108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * SOFTWARE. 31108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 32108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 33108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#include <linux/delay.h> 34108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#include <linux/pci.h> 35108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#include <linux/vmalloc.h> 36108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 37108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#include "ipath_kernel.h" 38108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 39108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/* 40108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * InfiniPath I2C driver for a serial eeprom. This is not a generic 41108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * I2C interface. For a start, the device we're using (Atmel AT24C11) 42108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * doesn't work like a regular I2C device. It looks like one 43108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * electrically, but not logically. Normal I2C devices have a single 44108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 7-bit or 10-bit I2C address that they respond to. Valid 7-bit 45108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * addresses range from 0x03 to 0x77. Addresses 0x00 to 0x02 and 0x78 46108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * to 0x7F are special reserved addresses (e.g. 0x00 is the "general 47108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * call" address.) The Atmel device, on the other hand, responds to ALL 48108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 7-bit addresses. It's designed to be the only device on a given I2C 49108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * bus. A 7-bit address corresponds to the memory address within the 50108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Atmel device itself. 51108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 52108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Also, the timing requirements mean more than simple software 53108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * bitbanging, with readbacks from chip to ensure timing (simple udelay 54108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * is not enough). 55108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 56108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * This all means that accessing the device is specialized enough 57108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * that using the standard kernel I2C bitbanging interface would be 58108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * impossible. For example, the core I2C eeprom driver expects to find 59108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * a device at one or more of a limited set of addresses only. It doesn't 60108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * allow writing to an eeprom. It also doesn't provide any means of 61108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * accessing eeprom contents from within the kernel, only via sysfs. 62108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 63108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 64108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanenum i2c_type { 65108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_line_scl = 0, 66108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_line_sda 67108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan}; 68108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 69108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanenum i2c_state { 70108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_line_low = 0, 71108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_line_high 72108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan}; 73108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 74108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#define READ_CMD 1 75108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan#define WRITE_CMD 0 76108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 77108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int eeprom_init; 78108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 79108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/* 80108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * The gpioval manipulation really should be protected by spinlocks 81108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * or be converted to use atomic operations. 82108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 83108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 84108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 85108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * i2c_gpio_set - set a GPIO line 86108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 87108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @line: the line to set 88108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @new_line_state: the state to set 89108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 90108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Returns 0 if the line was set to the new state successfully, non-zero 91108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * on error. 92108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 93108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int i2c_gpio_set(struct ipath_devdata *dd, 94108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan enum i2c_type line, 95108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan enum i2c_state new_line_state) 96108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 97108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u64 read_val, write_val, mask, *gpioval; 98108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 99108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan gpioval = &dd->ipath_gpio_out; 100108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extctrl); 101108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (line == i2c_line_scl) 102108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan mask = ipath_gpio_scl; 103108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan else 104108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan mask = ipath_gpio_sda; 105108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 106108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (new_line_state == i2c_line_high) 107108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* tri-state the output rather than force high */ 108108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val = read_val & ~mask; 109108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan else 110108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* config line to be an output */ 111108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val = read_val | mask; 112108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, write_val); 113108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 114108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* set high and verify */ 115108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (new_line_state == i2c_line_high) 116108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val = 0x1UL; 117108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan else 118108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val = 0x0UL; 119108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 120108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (line == i2c_line_scl) { 121108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val <<= ipath_gpio_scl_num; 122108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *gpioval = *gpioval & ~(1UL << ipath_gpio_scl_num); 123108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *gpioval |= write_val; 124108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } else { 125108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val <<= ipath_gpio_sda_num; 126108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *gpioval = *gpioval & ~(1UL << ipath_gpio_sda_num); 127108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *gpioval |= write_val; 128108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 129108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_out, *gpioval); 130108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 131108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return 0; 132108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 133108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 134108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 135108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * i2c_gpio_get - get a GPIO line state 136108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 137108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @line: the line to get 138108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @curr_statep: where to put the line state 139108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 140108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Returns 0 if the line was set to the new state successfully, non-zero 141108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * on error. curr_state is not set on error. 142108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 143108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int i2c_gpio_get(struct ipath_devdata *dd, 144108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan enum i2c_type line, 145108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan enum i2c_state *curr_statep) 146108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 147108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u64 read_val, write_val, mask; 148108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int ret; 149108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 150108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* check args */ 151108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (curr_statep == NULL) { 152108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 1; 153108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 154108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 155108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 156108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extctrl); 157108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* config line to be an input */ 158108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (line == i2c_line_scl) 159108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan mask = ipath_gpio_scl; 160108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan else 161108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan mask = ipath_gpio_sda; 162108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan write_val = read_val & ~mask; 163108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, write_val); 164108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan read_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus); 165108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 166108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (read_val & mask) 167108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *curr_statep = i2c_line_high; 168108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan else 169108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *curr_statep = i2c_line_low; 170108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 171108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 0; 172108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 173108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanbail: 174108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return ret; 175108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 176108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 177108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 178108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * i2c_wait_for_writes - wait for a write 179108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 180108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 181108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * We use this instead of udelay directly, so we can make sure 182108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * that previous register writes have been flushed all the way 183108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * to the chip. Since we are delaying anyway, the cost doesn't 184108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * hurt, and makes the bit twiddling more regular 185108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 186108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic void i2c_wait_for_writes(struct ipath_devdata *dd) 187108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 188108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan (void)ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch); 189108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 190108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 191108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic void scl_out(struct ipath_devdata *dd, u8 bit) 192108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 193108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_gpio_set(dd, i2c_line_scl, bit ? i2c_line_high : i2c_line_low); 194108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 195108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_wait_for_writes(dd); 196108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 197108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 198108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic void sda_out(struct ipath_devdata *dd, u8 bit) 199108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 200108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_gpio_set(dd, i2c_line_sda, bit ? i2c_line_high : i2c_line_low); 201108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 202108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_wait_for_writes(dd); 203108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 204108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 205108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic u8 sda_in(struct ipath_devdata *dd, int wait) 206108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 207108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan enum i2c_state bit; 208108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 209108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (i2c_gpio_get(dd, i2c_line_sda, &bit)) 210108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("get bit failed!\n"); 211108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 212108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (wait) 213108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan i2c_wait_for_writes(dd); 214108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 215108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return bit == i2c_line_high ? 1U : 0; 216108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 217108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 218108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 219108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * i2c_ackrcv - see if ack following write is true 220108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 221108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 222108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int i2c_ackrcv(struct ipath_devdata *dd) 223108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 224108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 ack_received; 225108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 226108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* AT ENTRY SCL = LOW */ 227108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* change direction, ignore data */ 228108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ack_received = sda_in(dd, 1); 229108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 230108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ack_received = sda_in(dd, 1) == 0; 231108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 232108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return ack_received; 233108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 234108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 235108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 236108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * wr_byte - write a byte, one bit at a time 237108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 238108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @data: the byte to write 239108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 240108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * Returns 0 if we got the following ack, otherwise 1 241108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 242108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int wr_byte(struct ipath_devdata *dd, u8 data) 243108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 244108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int bit_cntr; 245108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 bit; 246108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 247108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan for (bit_cntr = 7; bit_cntr >= 0; bit_cntr--) { 248108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bit = (data >> bit_cntr) & 1; 249108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, bit); 250108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 251108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 252108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 253108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return (!i2c_ackrcv(dd)) ? 1 : 0; 254108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 255108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 256108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic void send_ack(struct ipath_devdata *dd) 257108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 258108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_low); 259108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 260108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 261108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_high); 262108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 263108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 264108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 265108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * i2c_startcmd - transmit the start condition, followed by address/cmd 266108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 267108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @offset_dir: direction byte 268108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 269108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * (both clock/data high, clock high, data low while clock is high) 270108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 271108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int i2c_startcmd(struct ipath_devdata *dd, u8 offset_dir) 272108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 273108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int res; 274108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 275108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* issue start sequence */ 276108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_high); 277108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 278108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_low); 279108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 280108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 281108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* issue length and direction byte */ 282108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan res = wr_byte(dd, offset_dir); 283108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 284108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (res) 285108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_cdbg(VERBOSE, "No ack to complete start\n"); 286108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 287108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return res; 288108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 289108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 290108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 291108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * stop_cmd - transmit the stop condition 292108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 293108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 294108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * (both clock/data low, clock high, data high while clock is high) 295108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 296108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic void stop_cmd(struct ipath_devdata *dd) 297108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 298108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 299108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_low); 300108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 301108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_high); 302108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan udelay(2); 303108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 304108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 305108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 306108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * eeprom_reset - reset I2C communication 307108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 308108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 309108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 310108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic int eeprom_reset(struct ipath_devdata *dd) 311108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 312108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int clock_cycles_left = 9; 313108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u64 *gpioval = &dd->ipath_gpio_out; 314108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int ret; 315108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 316108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_init = 1; 317108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *gpioval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_gpio_out); 318108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_cdbg(VERBOSE, "Resetting i2c eeprom; initial gpioout reg " 319108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "is %llx\n", (unsigned long long) *gpioval); 320108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 321108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* 322108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * This is to get the i2c into a known state, by first going low, 323108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * then tristate sda (and then tristate scl as first thing 324108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * in loop) 325108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 326108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 327108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_high); 328108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 329108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan while (clock_cycles_left--) { 330108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 331108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 332108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (sda_in(dd, 0)) { 333108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sda_out(dd, i2c_line_low); 334108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 335108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 0; 336108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 337108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 338108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 339108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 340108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 341108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 342108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 1; 343108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 344108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanbail: 345108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return ret; 346108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 347108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 348108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 349108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * ipath_eeprom_read - receives bytes from the eeprom via I2C 350108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 351108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @eeprom_offset: address to read from 352108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @buffer: where to store result 353108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @len: number of bytes to receive 354108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 355108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 356108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanint ipath_eeprom_read(struct ipath_devdata *dd, u8 eeprom_offset, 357108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan void *buffer, int len) 358108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 359108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* compiler complains unless initialized */ 360108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 single_byte = 0; 361108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int bit_cntr; 362108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int ret; 363108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 364108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (!eeprom_init) 365108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_reset(dd); 366108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 367108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_offset = (eeprom_offset << 1) | READ_CMD; 368108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 369108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (i2c_startcmd(dd, eeprom_offset)) { 370108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("Failed startcmd\n"); 371108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 372108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 1; 373108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 374108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 375108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 376108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* 377108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * eeprom keeps clocking data out as long as we ack, automatically 378108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * incrementing the address. 379108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 380108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan while (len-- > 0) { 381108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* get data */ 382108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan single_byte = 0; 383108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan for (bit_cntr = 8; bit_cntr; bit_cntr--) { 384108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 bit; 385108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 386108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bit = sda_in(dd, 0); 387108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan single_byte |= bit << (bit_cntr - 1); 388108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 389108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 390108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 391108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* send ack if not the last byte */ 392108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (len) 393108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan send_ack(dd); 394108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 395108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *((u8 *) buffer) = single_byte; 396108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan buffer++; 397108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 398108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 399108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 400108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 401108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 0; 402108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 403108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanbail: 404108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return ret; 405108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 406108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 407108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 408108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * ipath_eeprom_write - writes data to the eeprom via I2C 409108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 410108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @eeprom_offset: where to place data 411108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @buffer: data to write 412108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @len: number of bytes to write 413108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 414108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanint ipath_eeprom_write(struct ipath_devdata *dd, u8 eeprom_offset, 415108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan const void *buffer, int len) 416108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 417108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 single_byte; 418108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int sub_len; 419108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan const u8 *bp = buffer; 420108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int max_wait_time, i; 421108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int ret; 422108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 423108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (!eeprom_init) 424108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_reset(dd); 425108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 426108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan while (len > 0) { 427108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (i2c_startcmd(dd, (eeprom_offset << 1) | WRITE_CMD)) { 428108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("Failed to start cmd offset %u\n", 429108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_offset); 430108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto failed_write; 431108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 432108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 433108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sub_len = min(len, 4); 434108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan eeprom_offset += sub_len; 435108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan len -= sub_len; 436108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 437108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan for (i = 0; i < sub_len; i++) { 438108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (wr_byte(dd, *bp++)) { 439108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("no ack after byte %u/%u (%u " 440108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "total remain)\n", i, sub_len, 441108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan len + sub_len - i); 442108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto failed_write; 443108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 444108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 445108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 446108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 447108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 448108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* 449108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * wait for write complete by waiting for a successful 450108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * read (the chip replies with a zero after the write 451108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * cmd completes, and before it writes to the eeprom. 452108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * The startcmd for the read will fail the ack until 453108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * the writes have completed. We do this inline to avoid 454108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * the debug prints that are in the real read routine 455108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * if the startcmd fails. 456108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 457108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan max_wait_time = 100; 458108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan while (i2c_startcmd(dd, READ_CMD)) { 459108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 460108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (!--max_wait_time) { 461108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("Did not get successful read to " 462108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "complete write\n"); 463108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto failed_write; 464108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 465108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 466108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* now read the zero byte */ 467108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan for (i = single_byte = 0; i < 8; i++) { 468108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 bit; 469108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_high); 470108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bit = sda_in(dd, 0); 471108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan scl_out(dd, i2c_line_low); 472108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan single_byte <<= 1; 473108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan single_byte |= bit; 474108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 475108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 476108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 477108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 478108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 0; 479108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 480108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 481108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanfailed_write: 482108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan stop_cmd(dd); 483108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ret = 1; 484108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 485108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanbail: 486108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return ret; 487108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 488108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 489108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanstatic u8 flash_csum(struct ipath_flash *ifp, int adjust) 490108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 491108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 *ip = (u8 *) ifp; 492108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 csum = 0, len; 493108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 494108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan for (len = 0; len < ifp->if_length; len++) 495108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan csum += *ip++; 496108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan csum -= ifp->if_csum; 497108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan csum = ~csum; 498108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (adjust) 499108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ifp->if_csum = csum; 500108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 501108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan return csum; 502108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 503108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 504108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan/** 505108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * ipath_get_guid - get the GUID from the i2c device 506108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * @dd: the infinipath device 507108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 508f2080fa3c6098dedfb9b599bdaedd07be2ea4646Bryan O'Sullivan * We have the capability to use the ipath_nguid field, and get 509f2080fa3c6098dedfb9b599bdaedd07be2ea4646Bryan O'Sullivan * the guid from the first chip's flash, to use for all of them. 510108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan */ 511f2080fa3c6098dedfb9b599bdaedd07be2ea4646Bryan O'Sullivanvoid ipath_get_eeprom_info(struct ipath_devdata *dd) 512108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan{ 513108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan void *buf; 514108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan struct ipath_flash *ifp; 515108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan __be64 guid; 516108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int len; 517108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 csum, *bguid; 518108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan int t = dd->ipath_unit; 519108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan struct ipath_devdata *dd0 = ipath_lookup(0); 520108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 521108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (t && dd0->ipath_nguid > 1 && t <= dd0->ipath_nguid) { 522108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan u8 *bguid, oguid; 523108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd->ipath_guid = dd0->ipath_guid; 524108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid = (u8 *) & dd->ipath_guid; 525108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 526108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan oguid = bguid[7]; 527108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[7] += t; 528108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (oguid > bguid[7]) { 529108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (bguid[6] == 0xff) { 530108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (bguid[5] == 0xff) { 531108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dev_err( 532108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd, 533108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "Can't set %s GUID from " 534108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "base, wraps to OUI!\n", 535108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_get_unit_name(t)); 536108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd->ipath_guid = 0; 537108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 538108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 539108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[5]++; 540108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 541108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[6]++; 542108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 543108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd->ipath_nguid = 1; 544108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 545108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dbg("nguid %u, so adding %u to device 0 guid, " 546108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "for %llx\n", 547108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd0->ipath_nguid, t, 548108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan (unsigned long long) be64_to_cpu(dd->ipath_guid)); 549108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 550108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 551108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 552108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan len = offsetof(struct ipath_flash, if_future); 553108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan buf = vmalloc(len); 554108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (!buf) { 555108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dev_err(dd, "Couldn't allocate memory to read %u " 556108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "bytes from eeprom for GUID\n", len); 557108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto bail; 558108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 559108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 560108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (ipath_eeprom_read(dd, 0, buf, len)) { 561108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dev_err(dd, "Failed reading GUID from eeprom\n"); 562108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto done; 563108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 564108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ifp = (struct ipath_flash *)buf; 565108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 566108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan csum = flash_csum(ifp, 0); 567108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (csum != ifp->if_csum) { 568108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dev_info(&dd->pcidev->dev, "Bad I2C flash checksum: " 569108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "0x%x, not 0x%x\n", csum, ifp->if_csum); 570108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto done; 571108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 572108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (*(__be64 *) ifp->if_guid == 0ULL || 573108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *(__be64 *) ifp->if_guid == __constant_cpu_to_be64(-1LL)) { 574108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_dev_err(dd, "Invalid GUID %llx from flash; " 575108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "ignoring\n", 576108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *(unsigned long long *) ifp->if_guid); 577108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* don't allow GUID if all 0 or all 1's */ 578108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan goto done; 579108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } 580108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 581108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* complain, but allow it */ 582108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (*(u64 *) ifp->if_guid == 0x100007511000000ULL) 583108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dev_info(&dd->pcidev->dev, "Warning, GUID %llx is " 584108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "default, probably not correct!\n", 585108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan *(unsigned long long *) ifp->if_guid); 586108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 587108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid = ifp->if_guid; 588108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan if (!bguid[0] && !bguid[1] && !bguid[2]) { 589108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan /* original incorrect GUID format in flash; fix in 590108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * core copy, by shifting up 2 octets; don't need to 591108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * change top octet, since both it and shifted are 592108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan * 0.. */ 593108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[1] = bguid[3]; 594108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[2] = bguid[4]; 595108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan bguid[3] = bguid[4] = 0; 596108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan guid = *(__be64 *) ifp->if_guid; 597108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_cdbg(VERBOSE, "Old GUID format in flash, top 3 zero, " 598108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan "shifting 2 octets\n"); 599108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan } else 600108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan guid = *(__be64 *) ifp->if_guid; 601108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd->ipath_guid = guid; 602108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan dd->ipath_nguid = ifp->if_numguid; 603108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan memcpy(dd->ipath_serial, ifp->if_serial, 604108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan sizeof(ifp->if_serial)); 605108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan ipath_cdbg(VERBOSE, "Initted GUID to %llx from eeprom\n", 606108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan (unsigned long long) be64_to_cpu(dd->ipath_guid)); 607108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 608108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivandone: 609108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan vfree(buf); 610108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan 611108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivanbail:; 612108ecf0d90655055d5a7db8d3a7239133b4d52b7Bryan O'Sullivan} 613