| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> |
| * |
| * 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. |
| */ |
| |
| #include "via_early_smbus.h" |
| |
| /** |
| * \brief Print an error, should it occur. If no error, just exit. |
| * |
| * @param smbus_dev The base SMBus IO port |
| * @param host_status The data returned on the host status register after |
| * a transaction is processed. |
| * @param loops The number of times a transaction was attempted. |
| * @return 0 if no error occurred |
| * 1 if an error was detected |
| */ |
| int smbus_print_error(u32 smbus_dev, u8 host_status, int loops) |
| { |
| /* Check if there actually was an error. */ |
| if ((host_status == 0x00 || host_status == 0x40 || |
| host_status == 0x42) && (loops < SMBUS_TIMEOUT)) |
| return 0; |
| |
| if (loops >= SMBUS_TIMEOUT) |
| printsmbus("SMBus timeout\n"); |
| if (host_status & (1 << 4)) |
| printsmbus("Interrupt/SMI# was Failed Bus Transaction\n"); |
| if (host_status & (1 << 3)) |
| printsmbus("Bus error\n"); |
| if (host_status & (1 << 2)) |
| printsmbus("Device error\n"); |
| if (host_status & (1 << 1)) |
| printsmbus("Interrupt/SMI# completed successfully\n"); |
| if (host_status & (1 << 0)) |
| printsmbus("Host busy\n"); |
| return 1; |
| } |
