diff options
Diffstat (limited to 'com32/modules/kontron_wdt.h')
| -rw-r--r-- | com32/modules/kontron_wdt.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/com32/modules/kontron_wdt.h b/com32/modules/kontron_wdt.h new file mode 100644 index 00000000..e916de30 --- /dev/null +++ b/com32/modules/kontron_wdt.h @@ -0,0 +1,117 @@ +/* + * 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])) |