xref: /kernel/linux/linux-5.10/arch/arm/mach-footbridge/include/mach/hardware.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  arch/arm/mach-footbridge/include/mach/hardware.h
 *
 *  Copyright (C) 1998-1999 Russell King.
 *
 *  This file contains the hardware definitions of the EBSA-285.
 */
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H

/*   Virtual      Physical	Size
 * 0xff800000	0x40000000	1MB	X-Bus
 * 0xff000000	0x7c000000	1MB	PCI I/O space
 * 0xfe000000	0x42000000	1MB	CSR
 * 0xfd000000	0x78000000	1MB	Outbound write flush (not supported)
 * 0xfc000000	0x79000000	1MB	PCI IACK/special space
 * 0xfb000000	0x7a000000	16MB	PCI Config type 1
 * 0xfa000000	0x7b000000	16MB	PCI Config type 0
 * 0xf9000000	0x50000000	1MB	Cache flush
 * 0xf0000000	0x80000000	16MB	ISA memory
 */

#ifdef CONFIG_MMU
#define MMU_IO(a, b)	(a)
#else
#define MMU_IO(a, b)	(b)
#endif

#define XBUS_SIZE		0x00100000
#define XBUS_BASE		MMU_IO(0xff800000, 0x40000000)

#define ARMCSR_SIZE		0x00100000
#define ARMCSR_BASE		MMU_IO(0xfe000000, 0x42000000)

#define WFLUSH_SIZE		0x00100000
#define WFLUSH_BASE		MMU_IO(0xfd000000, 0x78000000)

#define PCIIACK_SIZE		0x00100000
#define PCIIACK_BASE		MMU_IO(0xfc000000, 0x79000000)

#define PCICFG1_SIZE		0x01000000
#define PCICFG1_BASE		MMU_IO(0xfb000000, 0x7a000000)

#define PCICFG0_SIZE		0x01000000
#define PCICFG0_BASE		MMU_IO(0xfa000000, 0x7b000000)

#define PCIMEM_SIZE		0x01000000
#define PCIMEM_BASE		MMU_IO(0xf0000000, 0x80000000)

#define XBUS_CS2		0x40012000

#define XBUS_SWITCH		((volatile unsigned char *)(XBUS_BASE + 0x12000))
#define XBUS_SWITCH_SWITCH	((*XBUS_SWITCH) & 15)
#define XBUS_SWITCH_J17_13	((*XBUS_SWITCH) & (1 << 4))
#define XBUS_SWITCH_J17_11	((*XBUS_SWITCH) & (1 << 5))
#define XBUS_SWITCH_J17_9	((*XBUS_SWITCH) & (1 << 6))

#define UNCACHEABLE_ADDR	(ARMCSR_BASE + 0x108)	/* CSR_ROMBASEMASK */


/* PIC irq control */
#define PIC_LO			0x20
#define PIC_MASK_LO		0x21
#define PIC_HI			0xA0
#define PIC_MASK_HI		0xA1

/* GPIO pins */
#define GPIO_CCLK		0x800
#define GPIO_DSCLK		0x400
#define GPIO_E2CLK		0x200
#define GPIO_IOLOAD		0x100
#define GPIO_RED_LED		0x080
#define GPIO_WDTIMER		0x040
#define GPIO_DATA		0x020
#define GPIO_IOCLK		0x010
#define GPIO_DONE		0x008
#define GPIO_FAN		0x004
#define GPIO_GREEN_LED		0x002
#define GPIO_RESET		0x001

/* CPLD pins */
#define CPLD_DS_ENABLE		8
#define CPLD_7111_DISABLE	4
#define CPLD_UNMUTE		2
#define CPLD_FLASH_WR_ENABLE	1

#ifndef __ASSEMBLY__
extern raw_spinlock_t nw_gpio_lock;
extern void nw_gpio_modify_op(unsigned int mask, unsigned int set);
extern void nw_gpio_modify_io(unsigned int mask, unsigned int in);
extern unsigned int nw_gpio_read(void);
extern void nw_cpld_modify(unsigned int mask, unsigned int set);
#endif

#endif