/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
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*
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* Copyright (C) 2000 Geert Uytterhoeven <geert@linux-m68k.org>
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* Sony Software Development Center Europe (SDCE), Brussels
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*
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* This file is based on the following documentation:
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*
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* NEC Vrc 5074 System Controller Data Sheet, June 1998
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*/
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#ifndef _ASM_NILE4_H
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#define _ASM_NILE4_H
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#define NILE4_BASE 0xbfa00000
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#define NILE4_SIZE 0x00200000 /* 2 MB */
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/*
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* Physical Device Address Registers (PDARs)
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*/
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#define NILE4_SDRAM0 0x0000 /* SDRAM Bank 0 [R/W] */
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#define NILE4_SDRAM1 0x0008 /* SDRAM Bank 1 [R/W] */
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#define NILE4_DCS2 0x0010 /* Device Chip-Select 2 [R/W] */
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#define NILE4_DCS3 0x0018 /* Device Chip-Select 3 [R/W] */
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#define NILE4_DCS4 0x0020 /* Device Chip-Select 4 [R/W] */
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#define NILE4_DCS5 0x0028 /* Device Chip-Select 5 [R/W] */
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#define NILE4_DCS6 0x0030 /* Device Chip-Select 6 [R/W] */
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#define NILE4_DCS7 0x0038 /* Device Chip-Select 7 [R/W] */
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#define NILE4_DCS8 0x0040 /* Device Chip-Select 8 [R/W] */
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#define NILE4_PCIW0 0x0060 /* PCI Address Window 0 [R/W] */
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#define NILE4_PCIW1 0x0068 /* PCI Address Window 1 [R/W] */
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#define NILE4_INTCS 0x0070 /* Controller Internal Registers and Devices */
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/* [R/W] */
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#define NILE4_BOOTCS 0x0078 /* Boot ROM Chip-Select [R/W] */
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/*
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* CPU Interface Registers
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*/
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#define NILE4_CPUSTAT 0x0080 /* CPU Status [R/W] */
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#define NILE4_INTCTRL 0x0088 /* Interrupt Control [R/W] */
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#define NILE4_INTSTAT0 0x0090 /* Interrupt Status 0 [R] */
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#define NILE4_INTSTAT1 0x0098 /* Interrupt Status 1 and CPU Interrupt */
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/* Enable [R/W] */
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#define NILE4_INTCLR 0x00A0 /* Interrupt Clear [R/W] */
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#define NILE4_INTPPES 0x00A8 /* PCI Interrupt Control [R/W] */
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/*
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* Memory-Interface Registers
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*/
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#define NILE4_MEMCTRL 0x00C0 /* Memory Control */
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#define NILE4_ACSTIME 0x00C8 /* Memory Access Timing [R/W] */
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#define NILE4_CHKERR 0x00D0 /* Memory Check Error Status [R] */
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/*
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* PCI-Bus Registers
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*/
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#define NILE4_PCICTRL 0x00E0 /* PCI Control [R/W] */
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#define NILE4_PCIARB 0x00E8 /* PCI Arbiter [R/W] */
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#define NILE4_PCIINIT0 0x00F0 /* PCI Master (Initiator) 0 [R/W] */
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#define NILE4_PCIINIT1 0x00F8 /* PCI Master (Initiator) 1 [R/W] */
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#define NILE4_PCIERR 0x00B8 /* PCI Error [R/W] */
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/*
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* Local-Bus Registers
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*/
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#define NILE4_LCNFG 0x0100 /* Local Bus Configuration [R/W] */
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#define NILE4_LCST2 0x0110 /* Local Bus Chip-Select Timing 2 [R/W] */
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#define NILE4_LCST3 0x0118 /* Local Bus Chip-Select Timing 3 [R/W] */
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#define NILE4_LCST4 0x0120 /* Local Bus Chip-Select Timing 4 [R/W] */
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#define NILE4_LCST5 0x0128 /* Local Bus Chip-Select Timing 5 [R/W] */
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#define NILE4_LCST6 0x0130 /* Local Bus Chip-Select Timing 6 [R/W] */
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#define NILE4_LCST7 0x0138 /* Local Bus Chip-Select Timing 7 [R/W] */
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#define NILE4_LCST8 0x0140 /* Local Bus Chip-Select Timing 8 [R/W] */
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#define NILE4_DCSFN 0x0150 /* Device Chip-Select Muxing and Output */
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/* Enables [R/W] */
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#define NILE4_DCSIO 0x0158 /* Device Chip-Selects As I/O Bits [R/W] */
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#define NILE4_BCST 0x0178 /* Local Boot Chip-Select Timing [R/W] */
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/*
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* DMA Registers
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*/
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#define NILE4_DMACTRL0 0x0180 /* DMA Control 0 [R/W] */
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#define NILE4_DMASRCA0 0x0188 /* DMA Source Address 0 [R/W] */
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#define NILE4_DMADESA0 0x0190 /* DMA Destination Address 0 [R/W] */
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#define NILE4_DMACTRL1 0x0198 /* DMA Control 1 [R/W] */
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#define NILE4_DMASRCA1 0x01A0 /* DMA Source Address 1 [R/W] */
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#define NILE4_DMADESA1 0x01A8 /* DMA Destination Address 1 [R/W] */
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/*
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* Timer Registers
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*/
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#define NILE4_T0CTRL 0x01C0 /* SDRAM Refresh Control [R/W] */
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#define NILE4_T0CNTR 0x01C8 /* SDRAM Refresh Counter [R/W] */
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#define NILE4_T1CTRL 0x01D0 /* CPU-Bus Read Time-Out Control [R/W] */
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#define NILE4_T1CNTR 0x01D8 /* CPU-Bus Read Time-Out Counter [R/W] */
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#define NILE4_T2CTRL 0x01E0 /* General-Purpose Timer Control [R/W] */
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#define NILE4_T2CNTR 0x01E8 /* General-Purpose Timer Counter [R/W] */
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#define NILE4_T3CTRL 0x01F0 /* Watchdog Timer Control [R/W] */
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#define NILE4_T3CNTR 0x01F8 /* Watchdog Timer Counter [R/W] */
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/*
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* PCI Configuration Space Registers
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*/
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#define NILE4_PCI_BASE 0x0200
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#define NILE4_VID 0x0200 /* PCI Vendor ID [R] */
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#define NILE4_DID 0x0202 /* PCI Device ID [R] */
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#define NILE4_PCICMD 0x0204 /* PCI Command [R/W] */
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#define NILE4_PCISTS 0x0206 /* PCI Status [R/W] */
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#define NILE4_REVID 0x0208 /* PCI Revision ID [R] */
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#define NILE4_CLASS 0x0209 /* PCI Class Code [R] */
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#define NILE4_CLSIZ 0x020C /* PCI Cache Line Size [R/W] */
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#define NILE4_MLTIM 0x020D /* PCI Latency Timer [R/W] */
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#define NILE4_HTYPE 0x020E /* PCI Header Type [R] */
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#define NILE4_BIST 0x020F /* BIST [R] (unimplemented) */
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#define NILE4_BARC 0x0210 /* PCI Base Address Register Control [R/W] */
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#define NILE4_BAR0 0x0218 /* PCI Base Address Register 0 [R/W] */
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#define NILE4_BAR1 0x0220 /* PCI Base Address Register 1 [R/W] */
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#define NILE4_CIS 0x0228 /* PCI Cardbus CIS Pointer [R] */
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/* (unimplemented) */
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#define NILE4_SSVID 0x022C /* PCI Sub-System Vendor ID [R/W] */
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#define NILE4_SSID 0x022E /* PCI Sub-System ID [R/W] */
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#define NILE4_ROM 0x0230 /* Expansion ROM Base Address [R] */
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/* (unimplemented) */
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#define NILE4_INTLIN 0x023C /* PCI Interrupt Line [R/W] */
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#define NILE4_INTPIN 0x023D /* PCI Interrupt Pin [R] */
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#define NILE4_MINGNT 0x023E /* PCI Min_Gnt [R] (unimplemented) */
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#define NILE4_MAXLAT 0x023F /* PCI Max_Lat [R] (unimplemented) */
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#define NILE4_BAR2 0x0240 /* PCI Base Address Register 2 [R/W] */
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#define NILE4_BAR3 0x0248 /* PCI Base Address Register 3 [R/W] */
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#define NILE4_BAR4 0x0250 /* PCI Base Address Register 4 [R/W] */
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#define NILE4_BAR5 0x0258 /* PCI Base Address Register 5 [R/W] */
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#define NILE4_BAR6 0x0260 /* PCI Base Address Register 6 [R/W] */
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#define NILE4_BAR7 0x0268 /* PCI Base Address Register 7 [R/W] */
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#define NILE4_BAR8 0x0270 /* PCI Base Address Register 8 [R/W] */
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#define NILE4_BARB 0x0278 /* PCI Base Address Register BOOT [R/W] */
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/*
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* Serial-Port Registers
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*/
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#define NILE4_UART_BASE 0x0300
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#define NILE4_UARTRBR 0x0300 /* UART Receiver Data Buffer [R] */
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#define NILE4_UARTTHR 0x0300 /* UART Transmitter Data Holding [W] */
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#define NILE4_UARTIER 0x0308 /* UART Interrupt Enable [R/W] */
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#define NILE4_UARTDLL 0x0300 /* UART Divisor Latch LSB [R/W] */
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#define NILE4_UARTDLM 0x0308 /* UART Divisor Latch MSB [R/W] */
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#define NILE4_UARTIIR 0x0310 /* UART Interrupt ID [R] */
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#define NILE4_UARTFCR 0x0310 /* UART FIFO Control [W] */
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#define NILE4_UARTLCR 0x0318 /* UART Line Control [R/W] */
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#define NILE4_UARTMCR 0x0320 /* UART Modem Control [R/W] */
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#define NILE4_UARTLSR 0x0328 /* UART Line Status [R/W] */
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#define NILE4_UARTMSR 0x0330 /* UART Modem Status [R/W] */
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#define NILE4_UARTSCR 0x0338 /* UART Scratch [R/W] */
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#define NILE4_UART_BASE_BAUD 520833 /* 100 MHz / 12 / 16 */
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/*
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* Interrupt Lines
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*/
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#define NILE4_INT_CPCE 0 /* CPU-Interface Parity-Error Interrupt */
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#define NILE4_INT_CNTD 1 /* CPU No-Target Decode Interrupt */
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#define NILE4_INT_MCE 2 /* Memory-Check Error Interrupt */
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#define NILE4_INT_DMA 3 /* DMA Controller Interrupt */
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#define NILE4_INT_UART 4 /* UART Interrupt */
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#define NILE4_INT_WDOG 5 /* Watchdog Timer Interrupt */
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#define NILE4_INT_GPT 6 /* General-Purpose Timer Interrupt */
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#define NILE4_INT_LBRTD 7 /* Local-Bus Ready Timer Interrupt */
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#define NILE4_INT_INTA 8 /* PCI Interrupt Signal INTA# */
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#define NILE4_INT_INTB 9 /* PCI Interrupt Signal INTB# */
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#define NILE4_INT_INTC 10 /* PCI Interrupt Signal INTC# */
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#define NILE4_INT_INTD 11 /* PCI Interrupt Signal INTD# */
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#define NILE4_INT_INTE 12 /* PCI Interrupt Signal INTE# (ISA cascade) */
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#define NILE4_INT_RESV 13 /* Reserved */
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#define NILE4_INT_PCIS 14 /* PCI SERR# Interrupt */
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#define NILE4_INT_PCIE 15 /* PCI Internal Error Interrupt */
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/*
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* Nile 4 Register Access
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*/
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static inline void nile4_sync(void)
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{
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volatile u32 *p = (volatile u32 *)0xbfc00000;
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(void)(*p);
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}
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static inline void nile4_out32(u32 offset, u32 val)
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{
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*(volatile u32 *)(NILE4_BASE+offset) = val;
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nile4_sync();
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}
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static inline u32 nile4_in32(u32 offset)
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{
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u32 val = *(volatile u32 *)(NILE4_BASE+offset);
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nile4_sync();
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return val;
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}
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static inline void nile4_out16(u32 offset, u16 val)
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{
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*(volatile u16 *)(NILE4_BASE+offset) = val;
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nile4_sync();
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}
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static inline u16 nile4_in16(u32 offset)
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{
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u16 val = *(volatile u16 *)(NILE4_BASE+offset);
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nile4_sync();
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return val;
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}
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static inline void nile4_out8(u32 offset, u8 val)
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{
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*(volatile u8 *)(NILE4_BASE+offset) = val;
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nile4_sync();
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}
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static inline u8 nile4_in8(u32 offset)
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{
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u8 val = *(volatile u8 *)(NILE4_BASE+offset);
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nile4_sync();
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return val;
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}
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/*
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* Physical Device Address Registers
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*/
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extern void nile4_set_pdar(u32 pdar, u32 phys, u32 size, int width,
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int on_memory_bus, int visible);
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/*
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* PCI Master Registers
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*/
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#define NILE4_PCICMD_IACK 0 /* PCI Interrupt Acknowledge */
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#define NILE4_PCICMD_IO 1 /* PCI I/O Space */
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#define NILE4_PCICMD_MEM 3 /* PCI Memory Space */
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#define NILE4_PCICMD_CFG 5 /* PCI Configuration Space */
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/*
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* PCI Address Spaces
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*
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* Note that these are multiplexed using PCIINIT[01]!
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*/
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#define NILE4_PCI_IO_BASE 0xa6000000
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#define NILE4_PCI_MEM_BASE 0xa8000000
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#define NILE4_PCI_CFG_BASE NILE4_PCI_MEM_BASE
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#define NILE4_PCI_IACK_BASE NILE4_PCI_IO_BASE
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extern void nile4_set_pmr(u32 pmr, u32 type, u32 addr);
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/*
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* Interrupt Programming
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*/
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#define NUM_I8259_INTERRUPTS 16
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#define NUM_NILE4_INTERRUPTS 16
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#define IRQ_I8259_CASCADE NILE4_INT_INTE
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#define is_i8259_irq(irq) ((irq) < NUM_I8259_INTERRUPTS)
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#define nile4_to_irq(n) ((n)+NUM_I8259_INTERRUPTS)
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#define irq_to_nile4(n) ((n)-NUM_I8259_INTERRUPTS)
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extern void nile4_map_irq(int nile4_irq, int cpu_irq);
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extern void nile4_map_irq_all(int cpu_irq);
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extern void nile4_enable_irq(unsigned int nile4_irq);
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extern void nile4_disable_irq(unsigned int nile4_irq);
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extern void nile4_disable_irq_all(void);
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extern u16 nile4_get_irq_stat(int cpu_irq);
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extern void nile4_enable_irq_output(int cpu_irq);
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extern void nile4_disable_irq_output(int cpu_irq);
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extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
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extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
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extern void nile4_clear_irq(int nile4_irq);
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extern void nile4_clear_irq_mask(u32 mask);
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extern u8 nile4_i8259_iack(void);
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extern void nile4_dump_irq_status(void); /* Debug */
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#endif
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