projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 77864f2e AR |
1 | /* |
| 2 | * Copyright (C) 2013 CERN (www.cern.ch) | |
| 3 | * Author: Alessandro Rubini <rubini@gnudd.com> | |
| 4 | * | |
| 5 | * Released according to the GNU GPL, version 2 or any later version. | |
| 6 | * | |
| 7 | * This work is part of the White Rabbit project, a research effort led | |
| 8 | * by CERN, the European Institute for Nuclear Research. | |
| 9 | */ | |
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/moduleparam.h> | |
| 12 | #include <linux/device.h> | |
| 13 | #include <linux/fmc.h> | |
| 14 | #include <linux/fmc-sdb.h> | |
| 15 | ||
| 16 | static int fmc_must_dump_eeprom; | |
| 17 | module_param_named(dump_eeprom, fmc_must_dump_eeprom, int, 0644); | |
| 77864f2e AR |
18 | |
| 19 | #define LINELEN 16 | |
| 20 | ||
| 21 | /* Dumping 8k takes oh so much: avoid duplicate lines */ | |
| 22 | static const uint8_t *dump_line(int addr, const uint8_t *line, | |
| 23 | const uint8_t *prev) | |
| 24 | { | |
| 25 | int i; | |
| 26 | ||
| 27 | if (!prev || memcmp(line, prev, LINELEN)) { | |
| 28 | pr_info("%04x: ", addr); | |
| 29 | for (i = 0; i < LINELEN; ) { | |
| 30 | printk(KERN_CONT "%02x", line[i]); | |
| 31 | i++; | |
| 32 | printk(i & 3 ? " " : i & (LINELEN - 1) ? " " : "\n"); | |
| 33 | } | |
| 34 | return line; | |
| 35 | } | |
| 36 | /* repeated line */ | |
| 37 | if (line == prev + LINELEN) | |
| 38 | pr_info("[...]\n"); | |
| 39 | return prev; | |
| 40 | } | |
| 41 | ||
| 42 | void fmc_dump_eeprom(const struct fmc_device *fmc) | |
| 43 | { | |
| 44 | const uint8_t *line, *prev; | |
| 45 | int i; | |
| 46 | ||
| 47 | if (!fmc_must_dump_eeprom) | |
| 48 | return; | |
| 49 | ||
| 50 | pr_info("FMC: %s (%s), slot %i, device %s\n", dev_name(fmc->hwdev), | |
| 51 | fmc->carrier_name, fmc->slot_id, dev_name(&fmc->dev)); | |
| 52 | pr_info("FMC: dumping eeprom 0x%x (%i) bytes\n", fmc->eeprom_len, | |
| 53 | fmc->eeprom_len); | |
| 54 | ||
| 55 | line = fmc->eeprom; | |
| 56 | prev = NULL; | |
| 57 | for (i = 0; i < fmc->eeprom_len; i += LINELEN, line += LINELEN) | |
| 58 | prev = dump_line(i, line, prev); | |
| 59 | } |