linux-vax-kern-commit Mailing List for Linux/VAX Porting Project (Page 41)

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Update of /cvsroot/linux-vax/kernel-2.4/arch/sh/stboards
In directory usw-pr-cvs1:/tmp/cvs-serv30858/sh/stboards

Added Files:
	Makefile harp.h irq.c led.c mach.c pcidma.c setup.c 
Log Message:
synch 2.4.15 commit 45


--- NEW FILE ---
#
# Makefile for STMicroelectronics board specific parts of the kernel
#
# Note! Dependencies are done automagically by 'make dep', which also
# removes any old dependencies. DON'T put your own dependencies here
# unless it's something special (ie not a .c file).
#

all: stboards.o
O_TARGET := stboards.o
obj-y := irq.o setup.o mach.o led.o

clean:

include $(TOPDIR)/Rules.make

--- NEW FILE ---
/* 
 * Copyright (C) 2001 David J. Mckay (dav...@st...)
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.                            
 *
 * Defintions applicable to the STMicroelectronics ST40STB1 HARP and
 * compatible boards.
 */

#if defined(CONFIG_SH_STB1_HARP)

#define EPLD_BASE     0xa0800000

#define EPLD_LED      (EPLD_BASE+0x000c0000)
#define EPLD_INTSTAT0 (EPLD_BASE+0x00200000)
#define EPLD_INTSTAT1 (EPLD_BASE+0x00240000)
#define EPLD_INTMASK0 (EPLD_BASE+0x00280000)
#define EPLD_INTMASK1 (EPLD_BASE+0x002c0000)
#define EPLD_PAGEADDR (EPLD_BASE+0x00300000)
#define EPLD_REVID1   (EPLD_BASE+0x00380000)
#define EPLD_REVID2   (EPLD_BASE+0x003c0000)

#define EPLD_LED_ON  1
#define EPLD_LED_OFF 0

#elif defined(CONFIG_SH_STB1_OVERDRIVE)

#define EPLD_BASE     0xa7000000

#define EPLD_REVID    (EPLD_BASE+0x00000000)
#define EPLD_LED      (EPLD_BASE+0x00040000)
#define EPLD_INTMASK0 (EPLD_BASE+0x001c0000)
#define EPLD_INTMASK1 (EPLD_BASE+0x00200000)
#define EPLD_INTSTAT0 (EPLD_BASE+0x00240000)
#define EPLD_INTSTAT1 (EPLD_BASE+0x00280000)

#define EPLD_LED_ON  0
#define EPLD_LED_OFF 1

#else
#error Unknown board
#endif

--- NEW FILE ---
/* 
 * Copyright (C) 2000 David J. Mckay (dav...@st...)
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.                            
 *
 * Looks after interrupts on the HARP board.
 *
 * Bases on the IPR irq system
 */

#include <linux/config.h>
#include <linux/init.h>
#include <linux/irq.h>

#include <asm/system.h>
#include <asm/io.h>

#include "harp.h"


#define NUM_EXTERNAL_IRQS 16

// Early versions of the STB1 Overdrive required this nasty frig
//#define INVERT_INTMASK_WRITES

static void enable_harp_irq(unsigned int irq);
static void disable_harp_irq(unsigned int irq);

/* shutdown is same as "disable" */
#define shutdown_harp_irq disable_harp_irq

static void mask_and_ack_harp(unsigned int);
static void end_harp_irq(unsigned int irq);

static unsigned int startup_harp_irq(unsigned int irq)
{
	enable_harp_irq(irq);
	return 0;		/* never anything pending */
}

static struct hw_interrupt_type harp_irq_type = {
	"Harp-IRQ",
	startup_harp_irq,
	shutdown_harp_irq,
	enable_harp_irq,
	disable_harp_irq,
	mask_and_ack_harp,
	end_harp_irq
};

static void disable_harp_irq(unsigned int irq)
{
	unsigned val, flags;
	unsigned maskReg;
	unsigned mask;
	int pri;

	if (irq < 0 || irq >= NUM_EXTERNAL_IRQS)
		return;

	pri = 15 - irq;

	if (pri < 8) {
		maskReg = EPLD_INTMASK0;
	} else {
		maskReg = EPLD_INTMASK1;
		pri -= 8;
	}

	save_and_cli(flags);
	mask = ctrl_inl(maskReg);
	mask &= (~(1 << pri));
#if defined(INVERT_INTMASK_WRITES)
	mask ^= 0xff;
#endif
	ctrl_outl(mask, maskReg);
	restore_flags(flags);
}

static void enable_harp_irq(unsigned int irq)
{
	unsigned flags;
	unsigned maskReg;
	unsigned mask;
	int pri;

	if (irq < 0 || irq >= NUM_EXTERNAL_IRQS)
		return;

	pri = 15 - irq;

	if (pri < 8) {
		maskReg = EPLD_INTMASK0;
	} else {
		maskReg = EPLD_INTMASK1;
		pri -= 8;
	}

	save_and_cli(flags);
	mask = ctrl_inl(maskReg);


	mask |= (1 << pri);

#if defined(INVERT_INTMASK_WRITES)
	mask ^= 0xff;
#endif
	ctrl_outl(mask, maskReg);

	restore_flags(flags);
}

/* This functions sets the desired irq handler to be an overdrive type */
static void __init make_harp_irq(unsigned int irq)
{
	disable_irq_nosync(irq);
	irq_desc[irq].handler = &harp_irq_type;
	disable_harp_irq(irq);
}

static void mask_and_ack_harp(unsigned int irq)
{
	disable_harp_irq(irq);
}

static void end_harp_irq(unsigned int irq)
{
	enable_harp_irq(irq);
}

void __init init_harp_irq(void)
{
	int i;

#if !defined(INVERT_INTMASK_WRITES)
	// On the harp these are set to enable an interrupt
	ctrl_outl(0x00, EPLD_INTMASK0);
	ctrl_outl(0x00, EPLD_INTMASK1);
#else
	// On the Overdrive the data is inverted before being stored in the reg
	ctrl_outl(0xff, EPLD_INTMASK0);
	ctrl_outl(0xff, EPLD_INTMASK1);
#endif

	for (i = 0; i < NUM_EXTERNAL_IRQS; i++) {
		make_harp_irq(i);
	}
}

--- NEW FILE ---
/*
 * linux/arch/sh/stboards/led.c
 *
 * Copyright (C) 2000 Stuart Menefy <stu...@st...>
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * This file contains ST40STB1 HARP and compatible code.
 */

#include <linux/config.h>
#include <asm/io.h>
#include "harp.h"

/* Harp: Flash LD10 (front pannel) connected to EPLD (IC8) */
/* Overdrive: Flash LD1 (front panel) connected to EPLD (IC4) */
/* Works for HARP and overdrive */
static void mach_led(int position, int value)
{
	if (value) {
		ctrl_outl(EPLD_LED_ON, EPLD_LED);
	} else {
		ctrl_outl(EPLD_LED_OFF, EPLD_LED);
	}
}

#ifdef CONFIG_HEARTBEAT

#include <linux/sched.h>

/* acts like an actual heart beat -- ie thump-thump-pause... */
void heartbeat_harp(void)
{
	static unsigned cnt = 0, period = 0, dist = 0;

	if (cnt == 0 || cnt == dist)
		mach_led( -1, 1);
	else if (cnt == 7 || cnt == dist+7)
		mach_led( -1, 0);

	if (++cnt > period) {
		cnt = 0;
		/* The hyperbolic function below modifies the heartbeat period
		 * length in dependency of the current (5min) load. It goes
		 * through the points f(0)=126, f(1)=86, f(5)=51,
		 * f(inf)->30. */
		period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
		dist = period / 4;
	}
}
#endif

--- NEW FILE ---
/*
 * linux/arch/sh/stboards/mach.c
 *
 * Copyright (C) 2000 Stuart Menefy (stu...@st...)
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * Machine vector for the STMicroelectronics STB1 HARP and compatible boards
 */

#include <linux/init.h>

#include <asm/machvec.h>
#include <asm/rtc.h>
#include <asm/machvec_init.h>
#include <asm/io_hd64465.h>
#include <asm/hd64465.h>

void setup_harp(void);
void init_harp_irq(void);
void heartbeat_harp(void);

/*
 * The Machine Vector
 */

struct sh_machine_vector mv_harp __initmv = {
	mv_name:		"STB1 Harp",

	mv_nr_irqs:		89 + HD64465_IRQ_NUM,

	mv_inb:			hd64465_inb,
	mv_inw:			hd64465_inw,
	mv_inl:			hd64465_inl,
	mv_outb:		hd64465_outb,
	mv_outw:		hd64465_outw,
	mv_outl:		hd64465_outl,

	mv_inb_p:		hd64465_inb_p,
	mv_inw_p:		hd64465_inw,
	mv_inl_p:		hd64465_inl,
	mv_outb_p:		hd64465_outb_p,
	mv_outw_p:		hd64465_outw,
	mv_outl_p:		hd64465_outl,

	mv_insb:		hd64465_insb,
	mv_insw:		hd64465_insw,
	mv_insl:		hd64465_insl,
	mv_outsb:		hd64465_outsb,
	mv_outsw:		hd64465_outsw,
	mv_outsl:		hd64465_outsl,

	mv_readb:		generic_readb,
	mv_readw:		generic_readw,
	mv_readl:		generic_readl,
	mv_writeb:		generic_writeb,
	mv_writew:		generic_writew,
	mv_writel:		generic_writel,

        mv_ioremap:             generic_ioremap,
        mv_iounmap:             generic_iounmap,
 
        mv_isa_port2addr:       hd64465_isa_port2addr,

	mv_init_arch:		setup_harp,
#ifdef CONFIG_PCI
	mv_init_irq:		init_harp_irq,
#endif
#ifdef CONFIG_HEARTBEAT
	mv_heartbeat:		heartbeat_harp,
#endif
        mv_rtc_gettimeofday:    sh_rtc_gettimeofday,
        mv_rtc_settimeofday:    sh_rtc_settimeofday,
};

ALIAS_MV(harp)

--- NEW FILE ---
/* 
 * Copyright (C) 2001 David J. Mckay (dav...@st...)
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.                            
 *
 * Dynamic DMA mapping support.
 */

#include <linux/types.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <asm/addrspace.h>


void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
			   dma_addr_t * dma_handle)
{
	void *ret;
	int gfp = GFP_ATOMIC;

	ret = (void *) __get_free_pages(gfp, get_order(size));

	if (ret != NULL) {
	        /* Is it neccessary to do the memset? */
		memset(ret, 0, size);
		*dma_handle = virt_to_bus(ret);
	}
	/* We must flush the cache before we pass it on to the device */
	flush_cache_all();
	return  P2SEGADDR(ret);
}

void pci_free_consistent(struct pci_dev *hwdev, size_t size,
			 void *vaddr, dma_addr_t dma_handle)
{
        unsigned long p1addr=P1SEGADDR((unsigned long)vaddr);

	free_pages(p1addr, get_order(size));
}

--- NEW FILE ---
/*
 * arch/sh/stboard/setup.c
 *
 * Copyright (C) 2001 Stuart Menefy (stu...@st...)
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * STMicroelectronics ST40STB1 HARP and compatible support.
 */

#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/io.h>
#include "harp.h"
/*
 * Initialize the board
 */
int __init setup_harp(void)
{
#ifdef CONFIG_SH_STB1_HARP
	unsigned long ic8_version, ic36_version;

	ic8_version = ctrl_inl(EPLD_REVID2);
	ic36_version = ctrl_inl(EPLD_REVID1);

        printk("STMicroelectronics STB1 HARP initialisaton\n");
        printk("EPLD versions: IC8: %d.%02d, IC36: %d.%02d\n",
               (ic8_version >> 4) & 0xf, ic8_version & 0xf,
               (ic36_version >> 4) & 0xf, ic36_version & 0xf);
#elif defined(CONFIG_SH_STB1_OVERDRIVE)
	unsigned long version;

	version = ctrl_inl(EPLD_REVID);

        printk("STMicroelectronics STB1 Overdrive initialisaton\n");
        printk("EPLD version: %d.%02d\n",
	       (version >> 4) & 0xf, version & 0xf);
#else
#error Undefined machine
#endif
 
        /* Currently all STB1 chips have problems with the sleep instruction,
         * so disable it here.
         */
	disable_hlt();

	return 0;
}

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linux-vax-kern-commit Mailing List for Linux/VAX Porting Project (Page 41)

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