[linux-block.git] / drivers / watchdog / sp5100_tco.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *	sp5100_tco:	TCO timer driver for sp5100 chipsets.
 *
 *	(c) Copyright 2009 Google Inc., All Rights Reserved.
 *
 *	TCO timer driver for sp5100 chipsets
 */

#include <linux/bitops.h>

/*
 * Some address definitions for the Watchdog
 */
#define SP5100_WDT_MEM_MAP_SIZE		0x08
#define SP5100_WDT_CONTROL(base)	((base) + 0x00) /* Watchdog Control */
#define SP5100_WDT_COUNT(base)		((base) + 0x04) /* Watchdog Count */

#define SP5100_WDT_START_STOP_BIT	BIT(0)
#define SP5100_WDT_FIRED		BIT(1)
#define SP5100_WDT_ACTION_RESET		BIT(2)
#define SP5100_WDT_DISABLED		BIT(3)
#define SP5100_WDT_TRIGGER_BIT		BIT(7)

#define SP5100_PM_IOPORTS_SIZE		0x02

/*
 * These two IO registers are hardcoded and there doesn't seem to be a way to
 * read them from a register.
 */

/*  For SP5100/SB7x0/SB8x0 chipset */
#define SP5100_IO_PM_INDEX_REG		0xCD6
#define SP5100_IO_PM_DATA_REG		0xCD7

/* For SP5100/SB7x0 chipset */
#define SP5100_SB_RESOURCE_MMIO_BASE	0x9C

#define SP5100_PM_WATCHDOG_CONTROL	0x69
#define SP5100_PM_WATCHDOG_BASE		0x6C

#define SP5100_PCI_WATCHDOG_MISC_REG	0x41
#define SP5100_PCI_WATCHDOG_DECODE_EN	BIT(3)

#define SP5100_PM_WATCHDOG_DISABLE	((u8)BIT(0))
#define SP5100_PM_WATCHDOG_SECOND_RES	GENMASK(2, 1)

#define SP5100_DEVNAME			"SP5100 TCO"

/*  For SB8x0(or later) chipset */
#define SB800_PM_ACPI_MMIO_EN		0x24
#define SB800_PM_WATCHDOG_CONTROL	0x48
#define SB800_PM_WATCHDOG_BASE		0x48
#define SB800_PM_WATCHDOG_CONFIG	0x4C

#define SB800_PCI_WATCHDOG_DECODE_EN	BIT(0)
#define SB800_PM_WATCHDOG_DISABLE	((u8)BIT(1))
#define SB800_PM_WATCHDOG_SECOND_RES	GENMASK(1, 0)
#define SB800_ACPI_MMIO_DECODE_EN	BIT(0)
#define SB800_ACPI_MMIO_SEL		BIT(1)
#define SB800_ACPI_MMIO_MASK		GENMASK(1, 0)

#define SB800_PM_WDT_MMIO_OFFSET	0xB00

#define SB800_DEVNAME			"SB800 TCO"

/* For recent chips with embedded FCH (rev 40+) */

#define EFCH_PM_DECODEEN		0x00

#define EFCH_PM_DECODEEN_WDT_TMREN	BIT(7)


#define EFCH_PM_DECODEEN3		0x03
#define EFCH_PM_DECODEEN_SECOND_RES	GENMASK(1, 0)
#define EFCH_PM_WATCHDOG_DISABLE	((u8)GENMASK(3, 2))

/* WDT MMIO if enabled with PM00_DECODEEN_WDT_TMREN */
#define EFCH_PM_WDT_ADDR		0xfeb00000

#define EFCH_PM_ISACONTROL		0x04

#define EFCH_PM_ISACONTROL_MMIOEN	BIT(1)

#define EFCH_PM_ACPI_MMIO_ADDR		0xfed80000
#define EFCH_PM_ACPI_MMIO_PM_OFFSET	0x00000300
#define EFCH_PM_ACPI_MMIO_WDT_OFFSET	0x00000b00

#define EFCH_PM_ACPI_MMIO_PM_ADDR	(EFCH_PM_ACPI_MMIO_ADDR +	\
					 EFCH_PM_ACPI_MMIO_PM_OFFSET)
#define EFCH_PM_ACPI_MMIO_PM_SIZE	8
#define AMD_ZEN_SMBUS_PCI_REV		0x51
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
15e28bf1 PG	2	/*
	3	* sp5100_tco: TCO timer driver for sp5100 chipsets.
	4	*
	5	* (c) Copyright 2009 Google Inc., All Rights Reserved.
	6	*
	7	* TCO timer driver for sp5100 chipsets
	8	*/
	9
17b20833 GR	10	#include <linux/bitops.h>
17b20833 GR	11
15e28bf1 PG	12	/*
	13	* Some address definitions for the Watchdog
	14	*/
15e28bf1 PG	15	#define SP5100_WDT_MEM_MAP_SIZE 0x08
	16	#define SP5100_WDT_CONTROL(base) ((base) + 0x00) /* Watchdog Control */
	17	#define SP5100_WDT_COUNT(base) ((base) + 0x04) /* Watchdog Count */
	18
17b20833 GR	19	#define SP5100_WDT_START_STOP_BIT BIT(0)
	20	#define SP5100_WDT_FIRED BIT(1)
	21	#define SP5100_WDT_ACTION_RESET BIT(2)
f7781b06	22	#define SP5100_WDT_DISABLED BIT(3)
17b20833	23	#define SP5100_WDT_TRIGGER_BIT BIT(7)
15e28bf1	24
15e28bf1 PG	25	#define SP5100_PM_IOPORTS_SIZE 0x02
15e28bf1 PG	26
740fbddf TT	27	/*
740fbddf TT	28	* These two IO registers are hardcoded and there doesn't seem to be a way to
15e28bf1 PG	29	* read them from a register.
15e28bf1 PG	30	*/
740fbddf	31
2b750cff	32	/* For SP5100/SB7x0/SB8x0 chipset */
15e28bf1 PG	33	#define SP5100_IO_PM_INDEX_REG 0xCD6
	34	#define SP5100_IO_PM_DATA_REG 0xCD7
	35
2b750cff	36	/* For SP5100/SB7x0 chipset */
740fbddf TT	37	#define SP5100_SB_RESOURCE_MMIO_BASE 0x9C
740fbddf TT	38
15e28bf1	39	#define SP5100_PM_WATCHDOG_CONTROL 0x69
740fbddf	40	#define SP5100_PM_WATCHDOG_BASE 0x6C
15e28bf1	41
740fbddf	42	#define SP5100_PCI_WATCHDOG_MISC_REG 0x41
17b20833	43	#define SP5100_PCI_WATCHDOG_DECODE_EN BIT(3)
740fbddf	44
17b20833 GR	45	#define SP5100_PM_WATCHDOG_DISABLE ((u8)BIT(0))
17b20833 GR	46	#define SP5100_PM_WATCHDOG_SECOND_RES GENMASK(2, 1)
740fbddf TT	47
	48	#define SP5100_DEVNAME "SP5100 TCO"
	49
740fbddf	50	/* For SB8x0(or later) chipset */
740fbddf TT	51	#define SB800_PM_ACPI_MMIO_EN 0x24
	52	#define SB800_PM_WATCHDOG_CONTROL 0x48
	53	#define SB800_PM_WATCHDOG_BASE 0x48
	54	#define SB800_PM_WATCHDOG_CONFIG 0x4C
	55
17b20833 GR	56	#define SB800_PCI_WATCHDOG_DECODE_EN BIT(0)
	57	#define SB800_PM_WATCHDOG_DISABLE ((u8)BIT(1))
	58	#define SB800_PM_WATCHDOG_SECOND_RES GENMASK(1, 0)
	59	#define SB800_ACPI_MMIO_DECODE_EN BIT(0)
	60	#define SB800_ACPI_MMIO_SEL BIT(1)
1f182aca	61	#define SB800_ACPI_MMIO_MASK GENMASK(1, 0)
740fbddf TT	62
	63	#define SB800_PM_WDT_MMIO_OFFSET 0xB00
	64
	65	#define SB800_DEVNAME "SB800 TCO"
887d2ec5 GR	66
	67	/* For recent chips with embedded FCH (rev 40+) */
	68
	69	#define EFCH_PM_DECODEEN 0x00
	70
	71	#define EFCH_PM_DECODEEN_WDT_TMREN BIT(7)
	72
	73
08c619b4	74	#define EFCH_PM_DECODEEN3 0x03
887d2ec5 GR	75	#define EFCH_PM_DECODEEN_SECOND_RES GENMASK(1, 0)
	76	#define EFCH_PM_WATCHDOG_DISABLE ((u8)GENMASK(3, 2))
	77
	78	/* WDT MMIO if enabled with PM00_DECODEEN_WDT_TMREN */
	79	#define EFCH_PM_WDT_ADDR 0xfeb00000
	80
	81	#define EFCH_PM_ISACONTROL 0x04
	82
	83	#define EFCH_PM_ISACONTROL_MMIOEN BIT(1)
	84
	85	#define EFCH_PM_ACPI_MMIO_ADDR 0xfed80000
0578fff4	86	#define EFCH_PM_ACPI_MMIO_PM_OFFSET 0x00000300
887d2ec5	87	#define EFCH_PM_ACPI_MMIO_WDT_OFFSET 0x00000b00
0578fff4 TB	88
	89	#define EFCH_PM_ACPI_MMIO_PM_ADDR (EFCH_PM_ACPI_MMIO_ADDR + \
	90	EFCH_PM_ACPI_MMIO_PM_OFFSET)
	91	#define EFCH_PM_ACPI_MMIO_PM_SIZE 8
82627037	92	#define AMD_ZEN_SMBUS_PCI_REV 0x51