| /* |
| * kempld_wdt.h - Kontron PLD watchdog driver definitions |
| * |
| * Copyright (c) 2010 Kontron Embedded Modules GmbH |
| * Author: Michael Brunner <michael.brunner@kontron.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License 2 as published |
| * by the Free Software Foundation. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; see the file COPYING. If not, write to |
| * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef _KEMPLD_WDT_H_ |
| #define _KEMPLD_WDT_H_ |
| #include <stdint.h> |
| |
| #define KEMPLD_IOPORT 0x0a80 |
| #define KEMPLD_IODATA (KEMPLD_IOPORT+1) |
| |
| #define KEMPLD_MUTEX_KEY 0x80 |
| |
| /* watchdog register definitions */ |
| #define KEMPLD_WDT_KICK 0x16 |
| #define KEMPLD_WDT_REV 0x16 |
| #define KEMPLD_WDT_REV_GET(x) (x & 0xf) |
| #define KEMPLD_WDT_CFG 0x17 |
| #define KEMPLD_WDT_CFG_STAGE_TIMEOUT_OCCURED(x) (1<<x) |
| #define KEMPLD_WDT_CFG_ENABLE_LOCK 0x8 |
| #define KEMPLD_WDT_CFG_ENABLE 0x10 |
| #define KEMPLD_WDT_CFG_AUTO_RELOAD 0x40 |
| #define KEMPLD_WDT_CFG_GLOBAL_LOCK 0x80 |
| #define KEMPLD_WDT_STAGE_CFG(x) (0x18+x) |
| #define KEMPLD_WDT_STAGE_CFG_ACTION_MASK 0x7 |
| #define KEMPLD_WDT_STAGE_CFG_GET_ACTION(x) (x & 0x7) |
| #define KEMPLD_WDT_STAGE_CFG_ASSERT 0x8 |
| #define KEMPLD_WDT_STAGE_CFG_PRESCALER_MASK 0x30 |
| #define KEMPLD_WDT_STAGE_CFG_GET_PRESCALER(x) ((x & 0x30)>>4) |
| #define KEMPLD_WDT_STAGE_CFG_SET_PRESCALER(x) ((x & 0x30)<<4) |
| #define KEMPLD_WDT_STAGE_TIMEOUT(x) (0x1b+x*4) |
| #define KEMPLD_WDT_MAX_STAGES 3 |
| |
| #define KEMPLD_WDT_ACTION_NONE 0x0 |
| #define KEMPLD_WDT_ACTION_RESET 0x1 |
| #define KEMPLD_WDT_ACTION_NMI 0x2 |
| #define KEMPLD_WDT_ACTION_SMI 0x3 |
| #define KEMPLD_WDT_ACTION_SCI 0x4 |
| #define KEMPLD_WDT_ACTION_DELAY 0x5 |
| |
| #define KEMPLD_WDT_PRESCALER_21BIT 0x0 |
| #define KEMPLD_WDT_PRESCALER_17BIT 0x1 |
| #define KEMPLD_WDT_PRESCALER_12BIT 0x2 |
| |
| const int kempld_prescaler_bits[] = { 21, 17, 12 }; |
| |
| struct kempld_watchdog_stage { |
| int num; |
| uint32_t timeout_mask; |
| }; |
| |
| /** |
| * struct kempld_device_data - Internal representation of the PLD device |
| * @io_base: Pointer to the IO memory |
| * @io_index: Pointer to the IO index register |
| * @io_data: Pointer to the IO data register |
| * @pld_clock: PLD clock frequency |
| * @lock: PLD spin-lock |
| * @lock_flags: PLD spin-lock flags |
| * @have_mutex: Bool value that indicates if mutex is aquired |
| * @last_index: Last written index value |
| * @rscr: Kernel resource structure |
| * @dev: Pointer to kernel device structure |
| * @info: KEMPLD info structure |
| */ |
| struct kempld_device_data { |
| uint16_t io_base; |
| uint16_t io_index; |
| uint16_t io_data; |
| uint32_t pld_clock; |
| /* spinlock_t lock; |
| unsigned long lock_flags; */ |
| int have_mutex; |
| uint8_t last_index; |
| /* struct resource rscr; |
| struct device *dev; |
| struct kempld_info info;*/ |
| }; |
| |
| struct watchdog_info { |
| uint32_t options; /* Options the card/driver supports */ |
| uint32_t firmware_version; /* Firmware version of the card */ |
| uint8_t identity[32]; /* Identity of the board */ |
| }; |
| |
| struct kempld_watchdog_data { |
| unsigned int revision; |
| int timeout; |
| int pretimeout; |
| unsigned long is_open; |
| unsigned long expect_close; |
| int stages; |
| struct kempld_watchdog_stage *timeout_stage; |
| struct kempld_watchdog_stage *pretimeout_stage; |
| struct kempld_device_data *pld; |
| struct kempld_watchdog_stage *stage[KEMPLD_WDT_MAX_STAGES]; |
| struct watchdog_info ident; |
| }; |
| |
| #endif /* _KEMPLD_WDT_H_ */ |
| #define KEMPLD_PRESCALER(x) (0xffffffff>>(32-kempld_prescaler_bits[x])) |