arch/mips/include/asm/nile4.h - linux/torvalds/linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
  *
  *  Copyright (C) 2000 Geert Uytterhoeven <geert@linux-m68k.org>
  *		       Sony Software Development Center Europe (SDCE), Brussels
  *
  *  This file is based on the following documentation:
  *
  *	NEC Vrc 5074 System Controller Data Sheet, June 1998
  */

 #ifndef _ASM_NILE4_H
 #define _ASM_NILE4_H

 #define NILE4_BASE		0xbfa00000
 #define NILE4_SIZE		0x00200000		/* 2 MB */


     /*
      *	Physical Device Address Registers (PDARs)
      */

 #define NILE4_SDRAM0	0x0000	/* SDRAM Bank 0 [R/W] */
 #define NILE4_SDRAM1	0x0008	/* SDRAM Bank 1 [R/W] */
 #define NILE4_DCS2	0x0010	/* Device Chip-Select 2 [R/W] */
 #define NILE4_DCS3	0x0018	/* Device Chip-Select 3 [R/W] */
 #define NILE4_DCS4	0x0020	/* Device Chip-Select 4 [R/W] */
 #define NILE4_DCS5	0x0028	/* Device Chip-Select 5 [R/W] */
 #define NILE4_DCS6	0x0030	/* Device Chip-Select 6 [R/W] */
 #define NILE4_DCS7	0x0038	/* Device Chip-Select 7 [R/W] */
 #define NILE4_DCS8	0x0040	/* Device Chip-Select 8 [R/W] */
 #define NILE4_PCIW0	0x0060	/* PCI Address Window 0 [R/W] */
 #define NILE4_PCIW1	0x0068	/* PCI Address Window 1 [R/W] */
 #define NILE4_INTCS	0x0070	/* Controller Internal Registers and Devices */
 				/* [R/W] */
 #define NILE4_BOOTCS	0x0078	/* Boot ROM Chip-Select [R/W] */


     /*
      *	CPU Interface Registers
      */

 #define NILE4_CPUSTAT	0x0080	/* CPU Status [R/W] */
 #define NILE4_INTCTRL	0x0088	/* Interrupt Control [R/W] */
 #define NILE4_INTSTAT0	0x0090	/* Interrupt Status 0 [R] */
 #define NILE4_INTSTAT1	0x0098	/* Interrupt Status 1 and CPU Interrupt */
 				/* Enable [R/W] */
 #define NILE4_INTCLR	0x00A0	/* Interrupt Clear [R/W] */
 #define NILE4_INTPPES	0x00A8	/* PCI Interrupt Control [R/W] */


     /*
      *	Memory-Interface Registers
      */

 #define NILE4_MEMCTRL	0x00C0	/* Memory Control */
 #define NILE4_ACSTIME	0x00C8	/* Memory Access Timing [R/W] */
 #define NILE4_CHKERR	0x00D0	/* Memory Check Error Status [R] */


     /*
      *	PCI-Bus Registers
      */

 #define NILE4_PCICTRL	0x00E0	/* PCI Control [R/W] */
 #define NILE4_PCIARB	0x00E8	/* PCI Arbiter [R/W] */
 #define NILE4_PCIINIT0	0x00F0	/* PCI Master (Initiator) 0 [R/W] */
 #define NILE4_PCIINIT1	0x00F8	/* PCI Master (Initiator) 1 [R/W] */
 #define NILE4_PCIERR	0x00B8	/* PCI Error [R/W] */


     /*
      *	Local-Bus Registers
      */

 #define NILE4_LCNFG	0x0100	/* Local Bus Configuration [R/W] */
 #define NILE4_LCST2	0x0110	/* Local Bus Chip-Select Timing 2 [R/W] */
 #define NILE4_LCST3	0x0118	/* Local Bus Chip-Select Timing 3 [R/W] */
 #define NILE4_LCST4	0x0120	/* Local Bus Chip-Select Timing 4 [R/W] */
 #define NILE4_LCST5	0x0128	/* Local Bus Chip-Select Timing 5 [R/W] */
 #define NILE4_LCST6	0x0130	/* Local Bus Chip-Select Timing 6 [R/W] */
 #define NILE4_LCST7	0x0138	/* Local Bus Chip-Select Timing 7 [R/W] */
 #define NILE4_LCST8	0x0140	/* Local Bus Chip-Select Timing 8 [R/W] */
 #define NILE4_DCSFN	0x0150	/* Device Chip-Select Muxing and Output */
 				/* Enables [R/W] */
 #define NILE4_DCSIO	0x0158	/* Device Chip-Selects As I/O Bits [R/W] */
 #define NILE4_BCST	0x0178	/* Local Boot Chip-Select Timing [R/W] */


     /*
      *	DMA Registers
      */

 #define NILE4_DMACTRL0	0x0180	/* DMA Control 0 [R/W] */
 #define NILE4_DMASRCA0	0x0188	/* DMA Source Address 0 [R/W] */
 #define NILE4_DMADESA0	0x0190	/* DMA Destination Address 0 [R/W] */
 #define NILE4_DMACTRL1	0x0198	/* DMA Control 1 [R/W] */
 #define NILE4_DMASRCA1	0x01A0	/* DMA Source Address 1 [R/W] */
 #define NILE4_DMADESA1	0x01A8	/* DMA Destination Address 1 [R/W] */


     /*
      *	Timer Registers
      */

 #define NILE4_T0CTRL	0x01C0	/* SDRAM Refresh Control [R/W] */
 #define NILE4_T0CNTR	0x01C8	/* SDRAM Refresh Counter [R/W] */
 #define NILE4_T1CTRL	0x01D0	/* CPU-Bus Read Time-Out Control [R/W] */
 #define NILE4_T1CNTR	0x01D8	/* CPU-Bus Read Time-Out Counter [R/W] */
 #define NILE4_T2CTRL	0x01E0	/* General-Purpose Timer Control [R/W] */
 #define NILE4_T2CNTR	0x01E8	/* General-Purpose Timer Counter [R/W] */
 #define NILE4_T3CTRL	0x01F0	/* Watchdog Timer Control [R/W] */
 #define NILE4_T3CNTR	0x01F8	/* Watchdog Timer Counter [R/W] */


     /*
      *	PCI Configuration Space Registers
      */

 #define NILE4_PCI_BASE	0x0200

 #define NILE4_VID	0x0200	/* PCI Vendor ID [R] */
 #define NILE4_DID	0x0202	/* PCI Device ID [R] */
 #define NILE4_PCICMD	0x0204	/* PCI Command [R/W] */
 #define NILE4_PCISTS	0x0206	/* PCI Status [R/W] */
 #define NILE4_REVID	0x0208	/* PCI Revision ID [R] */
 #define NILE4_CLASS	0x0209	/* PCI Class Code [R] */
 #define NILE4_CLSIZ	0x020C	/* PCI Cache Line Size [R/W] */
 #define NILE4_MLTIM	0x020D	/* PCI Latency Timer [R/W] */
 #define NILE4_HTYPE	0x020E	/* PCI Header Type [R] */
 #define NILE4_BIST	0x020F	/* BIST [R] (unimplemented) */
 #define NILE4_BARC	0x0210	/* PCI Base Address Register Control [R/W] */
 #define NILE4_BAR0	0x0218	/* PCI Base Address Register 0 [R/W] */
 #define NILE4_BAR1	0x0220	/* PCI Base Address Register 1 [R/W] */
 #define NILE4_CIS	0x0228	/* PCI Cardbus CIS Pointer [R] */
 				/* (unimplemented) */
 #define NILE4_SSVID	0x022C	/* PCI Sub-System Vendor ID [R/W] */
 #define NILE4_SSID	0x022E	/* PCI Sub-System ID [R/W] */
 #define NILE4_ROM	0x0230	/* Expansion ROM Base Address [R] */
 				/* (unimplemented) */
 #define NILE4_INTLIN	0x023C	/* PCI Interrupt Line [R/W] */
 #define NILE4_INTPIN	0x023D	/* PCI Interrupt Pin [R] */
 #define NILE4_MINGNT	0x023E	/* PCI Min_Gnt [R] (unimplemented) */
 #define NILE4_MAXLAT	0x023F	/* PCI Max_Lat [R] (unimplemented) */
 #define NILE4_BAR2	0x0240	/* PCI Base Address Register 2 [R/W] */
 #define NILE4_BAR3	0x0248	/* PCI Base Address Register 3 [R/W] */
 #define NILE4_BAR4	0x0250	/* PCI Base Address Register 4 [R/W] */
 #define NILE4_BAR5	0x0258	/* PCI Base Address Register 5 [R/W] */
 #define NILE4_BAR6	0x0260	/* PCI Base Address Register 6 [R/W] */
 #define NILE4_BAR7	0x0268	/* PCI Base Address Register 7 [R/W] */
 #define NILE4_BAR8	0x0270	/* PCI Base Address Register 8 [R/W] */
 #define NILE4_BARB	0x0278	/* PCI Base Address Register BOOT [R/W] */


     /*
      *	Serial-Port Registers
      */

 #define NILE4_UART_BASE 0x0300

 #define NILE4_UARTRBR	0x0300	/* UART Receiver Data Buffer [R] */
 #define NILE4_UARTTHR	0x0300	/* UART Transmitter Data Holding [W] */
 #define NILE4_UARTIER	0x0308	/* UART Interrupt Enable [R/W] */
 #define NILE4_UARTDLL	0x0300	/* UART Divisor Latch LSB [R/W] */
 #define NILE4_UARTDLM	0x0308	/* UART Divisor Latch MSB [R/W] */
 #define NILE4_UARTIIR	0x0310	/* UART Interrupt ID [R] */
 #define NILE4_UARTFCR	0x0310	/* UART FIFO Control [W] */
 #define NILE4_UARTLCR	0x0318	/* UART Line Control [R/W] */
 #define NILE4_UARTMCR	0x0320	/* UART Modem Control [R/W] */
 #define NILE4_UARTLSR	0x0328	/* UART Line Status [R/W] */
 #define NILE4_UARTMSR	0x0330	/* UART Modem Status [R/W] */
 #define NILE4_UARTSCR	0x0338	/* UART Scratch [R/W] */

 #define NILE4_UART_BASE_BAUD	520833	/* 100 MHz / 12 / 16 */


     /*
      *	Interrupt Lines
      */

 #define NILE4_INT_CPCE	0	/* CPU-Interface Parity-Error Interrupt */
 #define NILE4_INT_CNTD	1	/* CPU No-Target Decode Interrupt */
 #define NILE4_INT_MCE	2	/* Memory-Check Error Interrupt */
 #define NILE4_INT_DMA	3	/* DMA Controller Interrupt */
 #define NILE4_INT_UART	4	/* UART Interrupt */
 #define NILE4_INT_WDOG	5	/* Watchdog Timer Interrupt */
 #define NILE4_INT_GPT	6	/* General-Purpose Timer Interrupt */
 #define NILE4_INT_LBRTD 7	/* Local-Bus Ready Timer Interrupt */
 #define NILE4_INT_INTA	8	/* PCI Interrupt Signal INTA# */
 #define NILE4_INT_INTB	9	/* PCI Interrupt Signal INTB# */
 #define NILE4_INT_INTC	10	/* PCI Interrupt Signal INTC# */
 #define NILE4_INT_INTD	11	/* PCI Interrupt Signal INTD# */
 #define NILE4_INT_INTE	12	/* PCI Interrupt Signal INTE# (ISA cascade) */
 #define NILE4_INT_RESV	13	/* Reserved */
 #define NILE4_INT_PCIS	14	/* PCI SERR# Interrupt */
 #define NILE4_INT_PCIE	15	/* PCI Internal Error Interrupt */


     /*
      *	Nile 4 Register Access
      */

 static inline void nile4_sync(void)
 {
     volatile u32 *p = (volatile u32 *)0xbfc00000;
     (void)(*p);
 }

 static inline void nile4_out32(u32 offset, u32 val)
 {
     *(volatile u32 *)(NILE4_BASE+offset) = val;
     nile4_sync();
 }

 static inline u32 nile4_in32(u32 offset)
 {
     u32 val = *(volatile u32 *)(NILE4_BASE+offset);
     nile4_sync();
     return val;
 }

 static inline void nile4_out16(u32 offset, u16 val)
 {
     *(volatile u16 *)(NILE4_BASE+offset) = val;
     nile4_sync();
 }

 static inline u16 nile4_in16(u32 offset)
 {
     u16 val = *(volatile u16 *)(NILE4_BASE+offset);
     nile4_sync();
     return val;
 }

 static inline void nile4_out8(u32 offset, u8 val)
 {
     *(volatile u8 *)(NILE4_BASE+offset) = val;
     nile4_sync();
 }

 static inline u8 nile4_in8(u32 offset)
 {
     u8 val = *(volatile u8 *)(NILE4_BASE+offset);
     nile4_sync();
     return val;
 }


     /*
      *	Physical Device Address Registers
      */

 extern void nile4_set_pdar(u32 pdar, u32 phys, u32 size, int width,
 			   int on_memory_bus, int visible);


     /*
      *	PCI Master Registers
      */

 #define NILE4_PCICMD_IACK	0	/* PCI Interrupt Acknowledge */
 #define NILE4_PCICMD_IO		1	/* PCI I/O Space */
 #define NILE4_PCICMD_MEM	3	/* PCI Memory Space */
 #define NILE4_PCICMD_CFG	5	/* PCI Configuration Space */


     /*
      *	PCI Address Spaces
      *
      *	Note that these are multiplexed using PCIINIT[01]!
      */

 #define NILE4_PCI_IO_BASE	0xa6000000
 #define NILE4_PCI_MEM_BASE	0xa8000000
 #define NILE4_PCI_CFG_BASE	NILE4_PCI_MEM_BASE
 #define NILE4_PCI_IACK_BASE	NILE4_PCI_IO_BASE


 extern void nile4_set_pmr(u32 pmr, u32 type, u32 addr);


     /*
      *	Interrupt Programming
      */

 #define NUM_I8259_INTERRUPTS	16
 #define NUM_NILE4_INTERRUPTS	16

 #define IRQ_I8259_CASCADE	NILE4_INT_INTE
 #define is_i8259_irq(irq)	((irq) < NUM_I8259_INTERRUPTS)
 #define nile4_to_irq(n)		((n)+NUM_I8259_INTERRUPTS)
 #define irq_to_nile4(n)		((n)-NUM_I8259_INTERRUPTS)

 extern void nile4_map_irq(int nile4_irq, int cpu_irq);
 extern void nile4_map_irq_all(int cpu_irq);
 extern void nile4_enable_irq(unsigned int nile4_irq);
 extern void nile4_disable_irq(unsigned int nile4_irq);
 extern void nile4_disable_irq_all(void);
 extern u16 nile4_get_irq_stat(int cpu_irq);
 extern void nile4_enable_irq_output(int cpu_irq);
 extern void nile4_disable_irq_output(int cpu_irq);
 extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
 extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
 extern void nile4_clear_irq(int nile4_irq);
 extern void nile4_clear_irq_mask(u32 mask);
 extern u8 nile4_i8259_iack(void);
 extern void nile4_dump_irq_status(void);	/* Debug */

 #endif
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
	*
	* Copyright (C) 2000 Geert Uytterhoeven <geert@linux-m68k.org>
	* Sony Software Development Center Europe (SDCE), Brussels
	*
	* This file is based on the following documentation:
	*
	* NEC Vrc 5074 System Controller Data Sheet, June 1998
	*/

	#ifndef _ASM_NILE4_H
	#define _ASM_NILE4_H

	#define NILE4_BASE 0xbfa00000
	#define NILE4_SIZE 0x00200000 /* 2 MB */


	/*
	* Physical Device Address Registers (PDARs)
	*/

	#define NILE4_SDRAM0 0x0000 /* SDRAM Bank 0 [R/W] */
	#define NILE4_SDRAM1 0x0008 /* SDRAM Bank 1 [R/W] */
	#define NILE4_DCS2 0x0010 /* Device Chip-Select 2 [R/W] */
	#define NILE4_DCS3 0x0018 /* Device Chip-Select 3 [R/W] */
	#define NILE4_DCS4 0x0020 /* Device Chip-Select 4 [R/W] */
	#define NILE4_DCS5 0x0028 /* Device Chip-Select 5 [R/W] */
	#define NILE4_DCS6 0x0030 /* Device Chip-Select 6 [R/W] */
	#define NILE4_DCS7 0x0038 /* Device Chip-Select 7 [R/W] */
	#define NILE4_DCS8 0x0040 /* Device Chip-Select 8 [R/W] */
	#define NILE4_PCIW0 0x0060 /* PCI Address Window 0 [R/W] */
	#define NILE4_PCIW1 0x0068 /* PCI Address Window 1 [R/W] */
	#define NILE4_INTCS 0x0070 /* Controller Internal Registers and Devices */
	/* [R/W] */
	#define NILE4_BOOTCS 0x0078 /* Boot ROM Chip-Select [R/W] */


	/*
	* CPU Interface Registers
	*/

	#define NILE4_CPUSTAT 0x0080 /* CPU Status [R/W] */
	#define NILE4_INTCTRL 0x0088 /* Interrupt Control [R/W] */
	#define NILE4_INTSTAT0 0x0090 /* Interrupt Status 0 [R] */
	#define NILE4_INTSTAT1 0x0098 /* Interrupt Status 1 and CPU Interrupt */
	/* Enable [R/W] */
	#define NILE4_INTCLR 0x00A0 /* Interrupt Clear [R/W] */
	#define NILE4_INTPPES 0x00A8 /* PCI Interrupt Control [R/W] */


	/*
	* Memory-Interface Registers
	*/

	#define NILE4_MEMCTRL 0x00C0 /* Memory Control */
	#define NILE4_ACSTIME 0x00C8 /* Memory Access Timing [R/W] */
	#define NILE4_CHKERR 0x00D0 /* Memory Check Error Status [R] */


	/*
	* PCI-Bus Registers
	*/

	#define NILE4_PCICTRL 0x00E0 /* PCI Control [R/W] */
	#define NILE4_PCIARB 0x00E8 /* PCI Arbiter [R/W] */
	#define NILE4_PCIINIT0 0x00F0 /* PCI Master (Initiator) 0 [R/W] */
	#define NILE4_PCIINIT1 0x00F8 /* PCI Master (Initiator) 1 [R/W] */
	#define NILE4_PCIERR 0x00B8 /* PCI Error [R/W] */


	/*
	* Local-Bus Registers
	*/

	#define NILE4_LCNFG 0x0100 /* Local Bus Configuration [R/W] */
	#define NILE4_LCST2 0x0110 /* Local Bus Chip-Select Timing 2 [R/W] */
	#define NILE4_LCST3 0x0118 /* Local Bus Chip-Select Timing 3 [R/W] */
	#define NILE4_LCST4 0x0120 /* Local Bus Chip-Select Timing 4 [R/W] */
	#define NILE4_LCST5 0x0128 /* Local Bus Chip-Select Timing 5 [R/W] */
	#define NILE4_LCST6 0x0130 /* Local Bus Chip-Select Timing 6 [R/W] */
	#define NILE4_LCST7 0x0138 /* Local Bus Chip-Select Timing 7 [R/W] */
	#define NILE4_LCST8 0x0140 /* Local Bus Chip-Select Timing 8 [R/W] */
	#define NILE4_DCSFN 0x0150 /* Device Chip-Select Muxing and Output */
	/* Enables [R/W] */
	#define NILE4_DCSIO 0x0158 /* Device Chip-Selects As I/O Bits [R/W] */
	#define NILE4_BCST 0x0178 /* Local Boot Chip-Select Timing [R/W] */


	/*
	* DMA Registers
	*/

	#define NILE4_DMACTRL0 0x0180 /* DMA Control 0 [R/W] */
	#define NILE4_DMASRCA0 0x0188 /* DMA Source Address 0 [R/W] */
	#define NILE4_DMADESA0 0x0190 /* DMA Destination Address 0 [R/W] */
	#define NILE4_DMACTRL1 0x0198 /* DMA Control 1 [R/W] */
	#define NILE4_DMASRCA1 0x01A0 /* DMA Source Address 1 [R/W] */
	#define NILE4_DMADESA1 0x01A8 /* DMA Destination Address 1 [R/W] */


	/*
	* Timer Registers
	*/

	#define NILE4_T0CTRL 0x01C0 /* SDRAM Refresh Control [R/W] */
	#define NILE4_T0CNTR 0x01C8 /* SDRAM Refresh Counter [R/W] */
	#define NILE4_T1CTRL 0x01D0 /* CPU-Bus Read Time-Out Control [R/W] */
	#define NILE4_T1CNTR 0x01D8 /* CPU-Bus Read Time-Out Counter [R/W] */
	#define NILE4_T2CTRL 0x01E0 /* General-Purpose Timer Control [R/W] */
	#define NILE4_T2CNTR 0x01E8 /* General-Purpose Timer Counter [R/W] */
	#define NILE4_T3CTRL 0x01F0 /* Watchdog Timer Control [R/W] */
	#define NILE4_T3CNTR 0x01F8 /* Watchdog Timer Counter [R/W] */


	/*
	* PCI Configuration Space Registers
	*/

	#define NILE4_PCI_BASE 0x0200

	#define NILE4_VID 0x0200 /* PCI Vendor ID [R] */
	#define NILE4_DID 0x0202 /* PCI Device ID [R] */
	#define NILE4_PCICMD 0x0204 /* PCI Command [R/W] */
	#define NILE4_PCISTS 0x0206 /* PCI Status [R/W] */
	#define NILE4_REVID 0x0208 /* PCI Revision ID [R] */
	#define NILE4_CLASS 0x0209 /* PCI Class Code [R] */
	#define NILE4_CLSIZ 0x020C /* PCI Cache Line Size [R/W] */
	#define NILE4_MLTIM 0x020D /* PCI Latency Timer [R/W] */
	#define NILE4_HTYPE 0x020E /* PCI Header Type [R] */
	#define NILE4_BIST 0x020F /* BIST [R] (unimplemented) */
	#define NILE4_BARC 0x0210 /* PCI Base Address Register Control [R/W] */
	#define NILE4_BAR0 0x0218 /* PCI Base Address Register 0 [R/W] */
	#define NILE4_BAR1 0x0220 /* PCI Base Address Register 1 [R/W] */
	#define NILE4_CIS 0x0228 /* PCI Cardbus CIS Pointer [R] */
	/* (unimplemented) */
	#define NILE4_SSVID 0x022C /* PCI Sub-System Vendor ID [R/W] */
	#define NILE4_SSID 0x022E /* PCI Sub-System ID [R/W] */
	#define NILE4_ROM 0x0230 /* Expansion ROM Base Address [R] */
	/* (unimplemented) */
	#define NILE4_INTLIN 0x023C /* PCI Interrupt Line [R/W] */
	#define NILE4_INTPIN 0x023D /* PCI Interrupt Pin [R] */
	#define NILE4_MINGNT 0x023E /* PCI Min_Gnt [R] (unimplemented) */
	#define NILE4_MAXLAT 0x023F /* PCI Max_Lat [R] (unimplemented) */
	#define NILE4_BAR2 0x0240 /* PCI Base Address Register 2 [R/W] */
	#define NILE4_BAR3 0x0248 /* PCI Base Address Register 3 [R/W] */
	#define NILE4_BAR4 0x0250 /* PCI Base Address Register 4 [R/W] */
	#define NILE4_BAR5 0x0258 /* PCI Base Address Register 5 [R/W] */
	#define NILE4_BAR6 0x0260 /* PCI Base Address Register 6 [R/W] */
	#define NILE4_BAR7 0x0268 /* PCI Base Address Register 7 [R/W] */
	#define NILE4_BAR8 0x0270 /* PCI Base Address Register 8 [R/W] */
	#define NILE4_BARB 0x0278 /* PCI Base Address Register BOOT [R/W] */


	/*
	* Serial-Port Registers
	*/

	#define NILE4_UART_BASE 0x0300

	#define NILE4_UARTRBR 0x0300 /* UART Receiver Data Buffer [R] */
	#define NILE4_UARTTHR 0x0300 /* UART Transmitter Data Holding [W] */
	#define NILE4_UARTIER 0x0308 /* UART Interrupt Enable [R/W] */
	#define NILE4_UARTDLL 0x0300 /* UART Divisor Latch LSB [R/W] */
	#define NILE4_UARTDLM 0x0308 /* UART Divisor Latch MSB [R/W] */
	#define NILE4_UARTIIR 0x0310 /* UART Interrupt ID [R] */
	#define NILE4_UARTFCR 0x0310 /* UART FIFO Control [W] */
	#define NILE4_UARTLCR 0x0318 /* UART Line Control [R/W] */
	#define NILE4_UARTMCR 0x0320 /* UART Modem Control [R/W] */
	#define NILE4_UARTLSR 0x0328 /* UART Line Status [R/W] */
	#define NILE4_UARTMSR 0x0330 /* UART Modem Status [R/W] */
	#define NILE4_UARTSCR 0x0338 /* UART Scratch [R/W] */

	#define NILE4_UART_BASE_BAUD 520833 /* 100 MHz / 12 / 16 */


	/*
	* Interrupt Lines
	*/

	#define NILE4_INT_CPCE 0 /* CPU-Interface Parity-Error Interrupt */
	#define NILE4_INT_CNTD 1 /* CPU No-Target Decode Interrupt */
	#define NILE4_INT_MCE 2 /* Memory-Check Error Interrupt */
	#define NILE4_INT_DMA 3 /* DMA Controller Interrupt */
	#define NILE4_INT_UART 4 /* UART Interrupt */
	#define NILE4_INT_WDOG 5 /* Watchdog Timer Interrupt */
	#define NILE4_INT_GPT 6 /* General-Purpose Timer Interrupt */
	#define NILE4_INT_LBRTD 7 /* Local-Bus Ready Timer Interrupt */
	#define NILE4_INT_INTA 8 /* PCI Interrupt Signal INTA# */
	#define NILE4_INT_INTB 9 /* PCI Interrupt Signal INTB# */
	#define NILE4_INT_INTC 10 /* PCI Interrupt Signal INTC# */
	#define NILE4_INT_INTD 11 /* PCI Interrupt Signal INTD# */
	#define NILE4_INT_INTE 12 /* PCI Interrupt Signal INTE# (ISA cascade) */
	#define NILE4_INT_RESV 13 /* Reserved */
	#define NILE4_INT_PCIS 14 /* PCI SERR# Interrupt */
	#define NILE4_INT_PCIE 15 /* PCI Internal Error Interrupt */


	/*
	* Nile 4 Register Access
	*/

	static inline void nile4_sync(void)
	{
	volatile u32 p = (volatile u32 )0xbfc00000;
	(void)(*p);
	}

	static inline void nile4_out32(u32 offset, u32 val)
	{
	(volatile u32 )(NILE4_BASE+offset) = val;
	nile4_sync();
	}

	static inline u32 nile4_in32(u32 offset)
	{
	u32 val = (volatile u32 )(NILE4_BASE+offset);
	nile4_sync();
	return val;
	}

	static inline void nile4_out16(u32 offset, u16 val)
	{
	(volatile u16 )(NILE4_BASE+offset) = val;
	nile4_sync();
	}

	static inline u16 nile4_in16(u32 offset)
	{
	u16 val = (volatile u16 )(NILE4_BASE+offset);
	nile4_sync();
	return val;
	}

	static inline void nile4_out8(u32 offset, u8 val)
	{
	(volatile u8 )(NILE4_BASE+offset) = val;
	nile4_sync();
	}

	static inline u8 nile4_in8(u32 offset)
	{
	u8 val = (volatile u8 )(NILE4_BASE+offset);
	nile4_sync();
	return val;
	}


	/*
	* Physical Device Address Registers
	*/

	extern void nile4_set_pdar(u32 pdar, u32 phys, u32 size, int width,
	int on_memory_bus, int visible);


	/*
	* PCI Master Registers
	*/

	#define NILE4_PCICMD_IACK 0 /* PCI Interrupt Acknowledge */
	#define NILE4_PCICMD_IO 1 /* PCI I/O Space */
	#define NILE4_PCICMD_MEM 3 /* PCI Memory Space */
	#define NILE4_PCICMD_CFG 5 /* PCI Configuration Space */


	/*
	* PCI Address Spaces
	*
	* Note that these are multiplexed using PCIINIT[01]!
	*/

	#define NILE4_PCI_IO_BASE 0xa6000000
	#define NILE4_PCI_MEM_BASE 0xa8000000
	#define NILE4_PCI_CFG_BASE NILE4_PCI_MEM_BASE
	#define NILE4_PCI_IACK_BASE NILE4_PCI_IO_BASE


	extern void nile4_set_pmr(u32 pmr, u32 type, u32 addr);


	/*
	* Interrupt Programming
	*/

	#define NUM_I8259_INTERRUPTS 16
	#define NUM_NILE4_INTERRUPTS 16

	#define IRQ_I8259_CASCADE NILE4_INT_INTE
	#define is_i8259_irq(irq) ((irq) < NUM_I8259_INTERRUPTS)
	#define nile4_to_irq(n) ((n)+NUM_I8259_INTERRUPTS)
	#define irq_to_nile4(n) ((n)-NUM_I8259_INTERRUPTS)

	extern void nile4_map_irq(int nile4_irq, int cpu_irq);
	extern void nile4_map_irq_all(int cpu_irq);
	extern void nile4_enable_irq(unsigned int nile4_irq);
	extern void nile4_disable_irq(unsigned int nile4_irq);
	extern void nile4_disable_irq_all(void);
	extern u16 nile4_get_irq_stat(int cpu_irq);
	extern void nile4_enable_irq_output(int cpu_irq);
	extern void nile4_disable_irq_output(int cpu_irq);
	extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
	extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
	extern void nile4_clear_irq(int nile4_irq);
	extern void nile4_clear_irq_mask(u32 mask);
	extern u8 nile4_i8259_iack(void);
	extern void nile4_dump_irq_status(void); /* Debug */

	#endif