root/arch/arm/include/asm/hardware/dec21285.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  arch/arm/include/asm/hardware/dec21285.h
 *
 *  Copyright (C) 1998 Russell King
 *
 *  DC21285 registers
 */
#define DC21285_PCI_IACK                0x79000000
#define DC21285_ARMCSR_BASE             0x42000000
#define DC21285_PCI_TYPE_0_CONFIG       0x7b000000
#define DC21285_PCI_TYPE_1_CONFIG       0x7a000000
#define DC21285_OUTBOUND_WRITE_FLUSH    0x78000000
#define DC21285_FLASH                   0x41000000
#define DC21285_PCI_IO                  0x7c000000
#define DC21285_PCI_MEM                 0x80000000

#ifndef __ASSEMBLY__
#include <mach/hardware.h>
#define DC21285_IO(x)           ((volatile unsigned long *)(ARMCSR_BASE+(x)))
#else
#define DC21285_IO(x)           (x)
#endif

/*
 * The footbridge is programmed to expose the system RAM at 0xe0000000.
 * The requirement is that the RAM isn't placed at bus address 0, which
 * would clash with VGA cards.
 */
#define BUS_OFFSET 0xe0000000

#define CSR_PCICMD              DC21285_IO(0x0004)
#define CSR_CLASSREV            DC21285_IO(0x0008)
#define CSR_PCICACHELINESIZE    DC21285_IO(0x000c)
#define CSR_PCICSRBASE          DC21285_IO(0x0010)
#define CSR_PCICSRIOBASE        DC21285_IO(0x0014)
#define CSR_PCISDRAMBASE        DC21285_IO(0x0018)
#define CSR_PCIROMBASE          DC21285_IO(0x0030)
#define CSR_MBOX0               DC21285_IO(0x0050)
#define CSR_MBOX1               DC21285_IO(0x0054)
#define CSR_MBOX2               DC21285_IO(0x0058)
#define CSR_MBOX3               DC21285_IO(0x005c)
#define CSR_DOORBELL            DC21285_IO(0x0060)
#define CSR_DOORBELL_SETUP      DC21285_IO(0x0064)
#define CSR_ROMWRITEREG         DC21285_IO(0x0068)
#define CSR_CSRBASEMASK         DC21285_IO(0x00f8)
#define CSR_CSRBASEOFFSET       DC21285_IO(0x00fc)
#define CSR_SDRAMBASEMASK       DC21285_IO(0x0100)
#define CSR_SDRAMBASEOFFSET     DC21285_IO(0x0104)
#define CSR_ROMBASEMASK         DC21285_IO(0x0108)
#define CSR_SDRAMTIMING         DC21285_IO(0x010c)
#define CSR_SDRAMADDRSIZE0      DC21285_IO(0x0110)
#define CSR_SDRAMADDRSIZE1      DC21285_IO(0x0114)
#define CSR_SDRAMADDRSIZE2      DC21285_IO(0x0118)
#define CSR_SDRAMADDRSIZE3      DC21285_IO(0x011c)
#define CSR_I2O_INFREEHEAD      DC21285_IO(0x0120)
#define CSR_I2O_INPOSTTAIL      DC21285_IO(0x0124)
#define CSR_I2O_OUTPOSTHEAD     DC21285_IO(0x0128)
#define CSR_I2O_OUTFREETAIL     DC21285_IO(0x012c)
#define CSR_I2O_INFREECOUNT     DC21285_IO(0x0130)
#define CSR_I2O_OUTPOSTCOUNT    DC21285_IO(0x0134)
#define CSR_I2O_INPOSTCOUNT     DC21285_IO(0x0138)
#define CSR_SA110_CNTL          DC21285_IO(0x013c)
#define SA110_CNTL_INITCMPLETE          (1 << 0)
#define SA110_CNTL_ASSERTSERR           (1 << 1)
#define SA110_CNTL_RXSERR               (1 << 3)
#define SA110_CNTL_SA110DRAMPARITY      (1 << 4)
#define SA110_CNTL_PCISDRAMPARITY       (1 << 5)
#define SA110_CNTL_DMASDRAMPARITY       (1 << 6)
#define SA110_CNTL_DISCARDTIMER         (1 << 8)
#define SA110_CNTL_PCINRESET            (1 << 9)
#define SA110_CNTL_I2O_256              (0 << 10)
#define SA110_CNTL_I20_512              (1 << 10)
#define SA110_CNTL_I2O_1024             (2 << 10)
#define SA110_CNTL_I2O_2048             (3 << 10)
#define SA110_CNTL_I2O_4096             (4 << 10)
#define SA110_CNTL_I2O_8192             (5 << 10)
#define SA110_CNTL_I2O_16384            (6 << 10)
#define SA110_CNTL_I2O_32768            (7 << 10)
#define SA110_CNTL_WATCHDOG             (1 << 13)
#define SA110_CNTL_ROMWIDTH_UNDEF       (0 << 14)
#define SA110_CNTL_ROMWIDTH_16          (1 << 14)
#define SA110_CNTL_ROMWIDTH_32          (2 << 14)
#define SA110_CNTL_ROMWIDTH_8           (3 << 14)
#define SA110_CNTL_ROMACCESSTIME(x)     ((x)<<16)
#define SA110_CNTL_ROMBURSTTIME(x)      ((x)<<20)
#define SA110_CNTL_ROMTRISTATETIME(x)   ((x)<<24)
#define SA110_CNTL_XCSDIR(x)            ((x)<<28)
#define SA110_CNTL_PCICFN               (1 << 31)

#define CSR_PCIADDR_EXTN        DC21285_IO(0x0140)
#define CSR_PREFETCHMEMRANGE    DC21285_IO(0x0144)
#define CSR_XBUS_CYCLE          DC21285_IO(0x0148)
#define CSR_XBUS_IOSTROBE       DC21285_IO(0x014c)
#define CSR_DOORBELL_PCI        DC21285_IO(0x0150)
#define CSR_DOORBELL_SA110      DC21285_IO(0x0154)
#define CSR_UARTDR              DC21285_IO(0x0160)
#define CSR_RXSTAT              DC21285_IO(0x0164)
#define CSR_H_UBRLCR            DC21285_IO(0x0168)
#define CSR_M_UBRLCR            DC21285_IO(0x016c)
#define CSR_L_UBRLCR            DC21285_IO(0x0170)
#define CSR_UARTCON             DC21285_IO(0x0174)
#define CSR_UARTFLG             DC21285_IO(0x0178)
#define CSR_IRQ_STATUS          DC21285_IO(0x0180)
#define CSR_IRQ_RAWSTATUS       DC21285_IO(0x0184)
#define CSR_IRQ_ENABLE          DC21285_IO(0x0188)
#define CSR_IRQ_DISABLE         DC21285_IO(0x018c)
#define CSR_IRQ_SOFT            DC21285_IO(0x0190)
#define CSR_FIQ_STATUS          DC21285_IO(0x0280)
#define CSR_FIQ_RAWSTATUS       DC21285_IO(0x0284)
#define CSR_FIQ_ENABLE          DC21285_IO(0x0288)
#define CSR_FIQ_DISABLE         DC21285_IO(0x028c)
#define CSR_FIQ_SOFT            DC21285_IO(0x0290)
#define CSR_TIMER1_LOAD         DC21285_IO(0x0300)
#define CSR_TIMER1_VALUE        DC21285_IO(0x0304)
#define CSR_TIMER1_CNTL         DC21285_IO(0x0308)
#define CSR_TIMER1_CLR          DC21285_IO(0x030c)
#define CSR_TIMER2_LOAD         DC21285_IO(0x0320)
#define CSR_TIMER2_VALUE        DC21285_IO(0x0324)
#define CSR_TIMER2_CNTL         DC21285_IO(0x0328)
#define CSR_TIMER2_CLR          DC21285_IO(0x032c)
#define CSR_TIMER3_LOAD         DC21285_IO(0x0340)
#define CSR_TIMER3_VALUE        DC21285_IO(0x0344)
#define CSR_TIMER3_CNTL         DC21285_IO(0x0348)
#define CSR_TIMER3_CLR          DC21285_IO(0x034c)
#define CSR_TIMER4_LOAD         DC21285_IO(0x0360)
#define CSR_TIMER4_VALUE        DC21285_IO(0x0364)
#define CSR_TIMER4_CNTL         DC21285_IO(0x0368)
#define CSR_TIMER4_CLR          DC21285_IO(0x036c)

#define TIMER_CNTL_ENABLE       (1 << 7)
#define TIMER_CNTL_AUTORELOAD   (1 << 6)
#define TIMER_CNTL_DIV1         (0)
#define TIMER_CNTL_DIV16        (1 << 2)
#define TIMER_CNTL_DIV256       (2 << 2)
#define TIMER_CNTL_CNTEXT       (3 << 2)