diff options
Diffstat (limited to 'arch/sh/cchips/hd6446x/hd64461')
| -rw-r--r-- | arch/sh/cchips/hd6446x/hd64461/Makefile | 6 | ||||
| -rw-r--r-- | arch/sh/cchips/hd6446x/hd64461/io.c | 157 | ||||
| -rw-r--r-- | arch/sh/cchips/hd6446x/hd64461/setup.c | 171 |
3 files changed, 334 insertions, 0 deletions
diff --git a/arch/sh/cchips/hd6446x/hd64461/Makefile b/arch/sh/cchips/hd6446x/hd64461/Makefile new file mode 100644 index 0000000..bff4b92 --- /dev/null +++ b/arch/sh/cchips/hd6446x/hd64461/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for the HD64461 +# + +obj-y := setup.o io.o + diff --git a/arch/sh/cchips/hd6446x/hd64461/io.c b/arch/sh/cchips/hd6446x/hd64461/io.c new file mode 100644 index 0000000..4c062d6 --- /dev/null +++ b/arch/sh/cchips/hd6446x/hd64461/io.c @@ -0,0 +1,157 @@ +/* + * $Id: io.c,v 1.6 2004/03/16 00:07:50 lethal Exp $ + * Copyright (C) 2000 YAEGASHI Takeshi + * Typical I/O routines for HD64461 system. + */ + +#include <linux/config.h> +#include <asm/io.h> +#include <asm/hd64461/hd64461.h> + +#define MEM_BASE (CONFIG_HD64461_IOBASE - HD64461_STBCR) + +static __inline__ unsigned long PORT2ADDR(unsigned long port) +{ + /* 16550A: HD64461 internal */ + if (0x3f8<=port && port<=0x3ff) + return CONFIG_HD64461_IOBASE + 0x8000 + ((port-0x3f8)<<1); + if (0x2f8<=port && port<=0x2ff) + return CONFIG_HD64461_IOBASE + 0x7000 + ((port-0x2f8)<<1); + +#ifdef CONFIG_HD64461_ENABLER + /* NE2000: HD64461 PCMCIA channel 0 (I/O) */ + if (0x300<=port && port<=0x31f) + return 0xba000000 + port; + + /* ide0: HD64461 PCMCIA channel 1 (memory) */ + /* On HP690, CF in slot 1 is configured as a memory card + device. See CF+ and CompactFlash Specification for the + detail of CF's memory mapped addressing. */ + if (0x1f0<=port && port<=0x1f7) return 0xb5000000 + port; + if (port == 0x3f6) return 0xb50001fe; + if (port == 0x3f7) return 0xb50001ff; + + /* ide1 */ + if (0x170<=port && port<=0x177) return 0xba000000 + port; + if (port == 0x376) return 0xba000376; + if (port == 0x377) return 0xba000377; +#endif + + /* ??? */ + if (port < 0xf000) return 0xa0000000 + port; + /* PCMCIA channel 0, I/O (0xba000000) */ + if (port < 0x10000) return 0xba000000 + port - 0xf000; + + /* HD64461 internal devices (0xb0000000) */ + if (port < 0x20000) return CONFIG_HD64461_IOBASE + port - 0x10000; + + /* PCMCIA channel 0, I/O (0xba000000) */ + if (port < 0x30000) return 0xba000000 + port - 0x20000; + + /* PCMCIA channel 1, memory (0xb5000000) */ + if (port < 0x40000) return 0xb5000000 + port - 0x30000; + + /* Whole physical address space (0xa0000000) */ + return 0xa0000000 + (port & 0x1fffffff); +} + +static inline void delay(void) +{ + ctrl_inw(0xa0000000); +} + +unsigned char hd64461_inb(unsigned long port) +{ + return *(volatile unsigned char*)PORT2ADDR(port); +} + +unsigned char hd64461_inb_p(unsigned long port) +{ + unsigned long v = *(volatile unsigned char*)PORT2ADDR(port); + delay(); + return v; +} + +unsigned short hd64461_inw(unsigned long port) +{ + return *(volatile unsigned short*)PORT2ADDR(port); +} + +unsigned int hd64461_inl(unsigned long port) +{ + return *(volatile unsigned long*)PORT2ADDR(port); +} + +void hd64461_outb(unsigned char b, unsigned long port) +{ + *(volatile unsigned char*)PORT2ADDR(port) = b; +} + +void hd64461_outb_p(unsigned char b, unsigned long port) +{ + *(volatile unsigned char*)PORT2ADDR(port) = b; + delay(); +} + +void hd64461_outw(unsigned short b, unsigned long port) +{ + *(volatile unsigned short*)PORT2ADDR(port) = b; +} + +void hd64461_outl(unsigned int b, unsigned long port) +{ + *(volatile unsigned long*)PORT2ADDR(port) = b; +} + +void hd64461_insb(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port); + unsigned char *buf=buffer; + while(count--) *buf++=*addr; +} + +void hd64461_insw(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port); + unsigned short *buf=buffer; + while(count--) *buf++=*addr; +} + +void hd64461_insl(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port); + unsigned long *buf=buffer; + while(count--) *buf++=*addr; +} + +void hd64461_outsb(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned char* addr=(volatile unsigned char*)PORT2ADDR(port); + const unsigned char *buf=buffer; + while(count--) *addr=*buf++; +} + +void hd64461_outsw(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned short* addr=(volatile unsigned short*)PORT2ADDR(port); + const unsigned short *buf=buffer; + while(count--) *addr=*buf++; +} + +void hd64461_outsl(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned long* addr=(volatile unsigned long*)PORT2ADDR(port); + const unsigned long *buf=buffer; + while(count--) *addr=*buf++; +} + +unsigned short hd64461_readw(unsigned long addr) +{ + return *(volatile unsigned short*)(MEM_BASE+addr); +} + +void hd64461_writew(unsigned short b, unsigned long addr) +{ + *(volatile unsigned short*)(MEM_BASE+addr) = b; +} + diff --git a/arch/sh/cchips/hd6446x/hd64461/setup.c b/arch/sh/cchips/hd6446x/hd64461/setup.c new file mode 100644 index 0000000..f014b9b --- /dev/null +++ b/arch/sh/cchips/hd6446x/hd64461/setup.c @@ -0,0 +1,171 @@ +/* + * $Id: setup.c,v 1.5 2004/03/16 00:07:50 lethal Exp $ + * Copyright (C) 2000 YAEGASHI Takeshi + * Hitachi HD64461 companion chip support + */ + +#include <linux/config.h> +#include <linux/sched.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/irq.h> + +#include <asm/io.h> +#include <asm/irq.h> + +#include <asm/hd64461/hd64461.h> + +static void disable_hd64461_irq(unsigned int irq) +{ + unsigned long flags; + unsigned short nimr; + unsigned short mask = 1 << (irq - HD64461_IRQBASE); + + local_irq_save(flags); + nimr = inw(HD64461_NIMR); + nimr |= mask; + outw(nimr, HD64461_NIMR); + local_irq_restore(flags); +} + +static void enable_hd64461_irq(unsigned int irq) +{ + unsigned long flags; + unsigned short nimr; + unsigned short mask = 1 << (irq - HD64461_IRQBASE); + + local_irq_save(flags); + nimr = inw(HD64461_NIMR); + nimr &= ~mask; + outw(nimr, HD64461_NIMR); + local_irq_restore(flags); +} + +static void mask_and_ack_hd64461(unsigned int irq) +{ + disable_hd64461_irq(irq); +#ifdef CONFIG_HD64461_ENABLER + if (irq == HD64461_IRQBASE + 13) + outb(0x00, HD64461_PCC1CSCR); +#endif +} + +static void end_hd64461_irq(unsigned int irq) +{ + if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) + enable_hd64461_irq(irq); +} + +static unsigned int startup_hd64461_irq(unsigned int irq) +{ + enable_hd64461_irq(irq); + return 0; +} + +static void shutdown_hd64461_irq(unsigned int irq) +{ + disable_hd64461_irq(irq); +} + +static struct hw_interrupt_type hd64461_irq_type = { + .typename = "HD64461-IRQ", + .startup = startup_hd64461_irq, + .shutdown = shutdown_hd64461_irq, + .enable = enable_hd64461_irq, + .disable = disable_hd64461_irq, + .ack = mask_and_ack_hd64461, + .end = end_hd64461_irq, +}; + +static irqreturn_t hd64461_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + printk(KERN_INFO + "HD64461: spurious interrupt, nirr: 0x%x nimr: 0x%x\n", + inw(HD64461_NIRR), inw(HD64461_NIMR)); + + return IRQ_NONE; +} + +static struct { + int (*func) (int, void *); + void *dev; +} hd64461_demux[HD64461_IRQ_NUM]; + +void hd64461_register_irq_demux(int irq, + int (*demux) (int irq, void *dev), void *dev) +{ + hd64461_demux[irq - HD64461_IRQBASE].func = demux; + hd64461_demux[irq - HD64461_IRQBASE].dev = dev; +} + +EXPORT_SYMBOL(hd64461_register_irq_demux); + +void hd64461_unregister_irq_demux(int irq) +{ + hd64461_demux[irq - HD64461_IRQBASE].func = 0; +} + +EXPORT_SYMBOL(hd64461_unregister_irq_demux); + +int hd64461_irq_demux(int irq) +{ + if (irq == CONFIG_HD64461_IRQ) { + unsigned short bit; + unsigned short nirr = inw(HD64461_NIRR); + unsigned short nimr = inw(HD64461_NIMR); + int i; + + nirr &= ~nimr; + for (bit = 1, i = 0; i < 16; bit <<= 1, i++) + if (nirr & bit) + break; + if (i == 16) + irq = CONFIG_HD64461_IRQ; + else { + irq = HD64461_IRQBASE + i; + if (hd64461_demux[i].func != 0) { + irq = hd64461_demux[i].func(irq, hd64461_demux[i].dev); + } + } + } + return __irq_demux(irq); +} + +static struct irqaction irq0 = { hd64461_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "HD64461", NULL, NULL }; + +int __init setup_hd64461(void) +{ + int i; + + if (!MACH_HD64461) + return 0; + + printk(KERN_INFO + "HD64461 configured at 0x%x on irq %d(mapped into %d to %d)\n", + CONFIG_HD64461_IOBASE, CONFIG_HD64461_IRQ, HD64461_IRQBASE, + HD64461_IRQBASE + 15); + +#if defined(CONFIG_CPU_SUBTYPE_SH7709) /* Should be at processor specific part.. */ + outw(0x2240, INTC_ICR1); +#endif + outw(0xffff, HD64461_NIMR); + + for (i = HD64461_IRQBASE; i < HD64461_IRQBASE + 16; i++) { + irq_desc[i].handler = &hd64461_irq_type; + } + + setup_irq(CONFIG_HD64461_IRQ, &irq0); + +#ifdef CONFIG_HD64461_ENABLER + printk(KERN_INFO "HD64461: enabling PCMCIA devices\n"); + outb(0x4c, HD64461_PCC1CSCIER); + outb(0x00, HD64461_PCC1CSCR); +#endif + + return 0; +} + +module_init(setup_hd64461); |