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Commit 0fdda107 authored by Ralf Baechle's avatar Ralf Baechle Committed by Linus Torvalds
Browse files

[PATCH] mips: remove VR4181 support 

There seem to be no more users or interest in the NEC Osprey evaluation
system for the NEC VR4181 SOC which is an old part anyway, so remove the
code.  More information on the Osprey can be found at
http://www.linux-mips.org/wiki/Osprey

.

Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 8bb670c1

arch/mips/configs/osprey_defconfig

deleted100644 → 0
+0 −618
Original line number Diff line number Diff line 
#

# Automatically generated make config: don't edit

# Linux kernel version: 2.6.11-rc2

# Wed Jan 26 02:49:08 2005

#

CONFIG_MIPS=y

# CONFIG_MIPS64 is not set

# CONFIG_64BIT is not set

CONFIG_MIPS32=y



#

# Code maturity level options

#

CONFIG_EXPERIMENTAL=y

CONFIG_CLEAN_COMPILE=y

CONFIG_BROKEN_ON_SMP=y



#

# General setup

#

CONFIG_LOCALVERSION=""

CONFIG_SWAP=y

CONFIG_SYSVIPC=y

# CONFIG_POSIX_MQUEUE is not set

# CONFIG_BSD_PROCESS_ACCT is not set

CONFIG_SYSCTL=y

# CONFIG_AUDIT is not set

CONFIG_LOG_BUF_SHIFT=14

# CONFIG_HOTPLUG is not set

CONFIG_KOBJECT_UEVENT=y

# CONFIG_IKCONFIG is not set

CONFIG_EMBEDDED=y

CONFIG_KALLSYMS=y

# CONFIG_KALLSYMS_EXTRA_PASS is not set

CONFIG_FUTEX=y

CONFIG_EPOLL=y

# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set

CONFIG_SHMEM=y

CONFIG_CC_ALIGN_FUNCTIONS=0

CONFIG_CC_ALIGN_LABELS=0

CONFIG_CC_ALIGN_LOOPS=0

CONFIG_CC_ALIGN_JUMPS=0

# CONFIG_TINY_SHMEM is not set



#

# Loadable module support

#

CONFIG_MODULES=y

CONFIG_MODULE_UNLOAD=y

# CONFIG_MODULE_FORCE_UNLOAD is not set

CONFIG_OBSOLETE_MODPARM=y

CONFIG_MODVERSIONS=y

CONFIG_MODULE_SRCVERSION_ALL=y

CONFIG_KMOD=y



#

# Machine selection

#

# CONFIG_MACH_JAZZ is not set

# CONFIG_MACH_VR41XX is not set

# CONFIG_TOSHIBA_JMR3927 is not set

# CONFIG_MIPS_COBALT is not set

# CONFIG_MACH_DECSTATION is not set

# CONFIG_MIPS_EV64120 is not set

# CONFIG_MIPS_EV96100 is not set

# CONFIG_MIPS_IVR is not set

# CONFIG_LASAT is not set

# CONFIG_MIPS_ITE8172 is not set

# CONFIG_MIPS_ATLAS is not set

# CONFIG_MIPS_MALTA is not set

# CONFIG_MIPS_SEAD is not set

# CONFIG_MOMENCO_OCELOT is not set

# CONFIG_MOMENCO_OCELOT_G is not set

# CONFIG_MOMENCO_OCELOT_C is not set

# CONFIG_MOMENCO_OCELOT_3 is not set

# CONFIG_MOMENCO_JAGUAR_ATX is not set

# CONFIG_PMC_YOSEMITE is not set

# CONFIG_DDB5074 is not set

# CONFIG_DDB5476 is not set

# CONFIG_DDB5477 is not set

CONFIG_NEC_OSPREY=y

# CONFIG_SGI_IP22 is not set

# CONFIG_SOC_AU1X00 is not set

# CONFIG_SIBYTE_SB1xxx_SOC is not set

# CONFIG_SNI_RM200_PCI is not set

# CONFIG_TOSHIBA_RBTX4927 is not set

CONFIG_RWSEM_GENERIC_SPINLOCK=y

CONFIG_GENERIC_CALIBRATE_DELAY=y

CONFIG_HAVE_DEC_LOCK=y

CONFIG_DMA_NONCOHERENT=y

CONFIG_CPU_LITTLE_ENDIAN=y

CONFIG_IRQ_CPU=y

CONFIG_MIPS_L1_CACHE_SHIFT=5

CONFIG_VR4181=y



#

# CPU selection

#

# CONFIG_CPU_MIPS32 is not set

# CONFIG_CPU_MIPS64 is not set

# CONFIG_CPU_R3000 is not set

# CONFIG_CPU_TX39XX is not set

CONFIG_CPU_VR41XX=y

# CONFIG_CPU_R4300 is not set

# CONFIG_CPU_R4X00 is not set

# CONFIG_CPU_TX49XX is not set

# CONFIG_CPU_R5000 is not set

# CONFIG_CPU_R5432 is not set

# CONFIG_CPU_R6000 is not set

# CONFIG_CPU_NEVADA is not set

# CONFIG_CPU_R8000 is not set

# CONFIG_CPU_R10000 is not set

# CONFIG_CPU_RM7000 is not set

# CONFIG_CPU_RM9000 is not set

# CONFIG_CPU_SB1 is not set

CONFIG_PAGE_SIZE_4KB=y

# CONFIG_PAGE_SIZE_8KB is not set

# CONFIG_PAGE_SIZE_16KB is not set

# CONFIG_PAGE_SIZE_64KB is not set

# CONFIG_CPU_ADVANCED is not set

CONFIG_CPU_HAS_SYNC=y

# CONFIG_PREEMPT is not set



#

# Bus options (PCI, PCMCIA, EISA, ISA, TC)

#

CONFIG_MMU=y



#

# PCCARD (PCMCIA/CardBus) support

#

# CONFIG_PCCARD is not set



#

# PC-card bridges

#



#

# PCI Hotplug Support

#



#

# Executable file formats

#

CONFIG_BINFMT_ELF=y

# CONFIG_BINFMT_MISC is not set

CONFIG_TRAD_SIGNALS=y



#

# Device Drivers

#



#

# Generic Driver Options

#

CONFIG_STANDALONE=y

CONFIG_PREVENT_FIRMWARE_BUILD=y

# CONFIG_FW_LOADER is not set



#

# Memory Technology Devices (MTD)

#

# CONFIG_MTD is not set



#

# Parallel port support

#

# CONFIG_PARPORT is not set



#

# Plug and Play support

#



#

# Block devices

#

# CONFIG_BLK_DEV_FD is not set

# CONFIG_BLK_DEV_COW_COMMON is not set

# CONFIG_BLK_DEV_LOOP is not set

# CONFIG_BLK_DEV_NBD is not set

# CONFIG_BLK_DEV_RAM is not set

CONFIG_BLK_DEV_RAM_COUNT=16

CONFIG_INITRAMFS_SOURCE=""

# CONFIG_LBD is not set

CONFIG_CDROM_PKTCDVD=m

CONFIG_CDROM_PKTCDVD_BUFFERS=8

# CONFIG_CDROM_PKTCDVD_WCACHE is not set



#

# IO Schedulers

#

CONFIG_IOSCHED_NOOP=y

CONFIG_IOSCHED_AS=y

CONFIG_IOSCHED_DEADLINE=y

CONFIG_IOSCHED_CFQ=y

CONFIG_ATA_OVER_ETH=m



#

# ATA/ATAPI/MFM/RLL support

#

# CONFIG_IDE is not set



#

# SCSI device support

#

# CONFIG_SCSI is not set



#

# Multi-device support (RAID and LVM)

#

# CONFIG_MD is not set



#

# Fusion MPT device support

#



#

# IEEE 1394 (FireWire) support

#



#

# I2O device support

#



#

# Networking support

#

CONFIG_NET=y



#

# Networking options

#

CONFIG_PACKET=y

# CONFIG_PACKET_MMAP is not set

CONFIG_NETLINK_DEV=y

CONFIG_UNIX=y

CONFIG_NET_KEY=y

CONFIG_INET=y

# CONFIG_IP_MULTICAST is not set

# CONFIG_IP_ADVANCED_ROUTER is not set

CONFIG_IP_PNP=y

# CONFIG_IP_PNP_DHCP is not set

CONFIG_IP_PNP_BOOTP=y

# CONFIG_IP_PNP_RARP is not set

# CONFIG_NET_IPIP is not set

# CONFIG_NET_IPGRE is not set

# CONFIG_ARPD is not set

# CONFIG_SYN_COOKIES is not set

# CONFIG_INET_AH is not set

# CONFIG_INET_ESP is not set

# CONFIG_INET_IPCOMP is not set

CONFIG_INET_TUNNEL=m

CONFIG_IP_TCPDIAG=m

# CONFIG_IP_TCPDIAG_IPV6 is not set

# CONFIG_IPV6 is not set

# CONFIG_NETFILTER is not set

CONFIG_XFRM=y

CONFIG_XFRM_USER=m



#

# SCTP Configuration (EXPERIMENTAL)

#

# CONFIG_IP_SCTP is not set

# CONFIG_ATM is not set

# CONFIG_BRIDGE is not set

# CONFIG_VLAN_8021Q is not set

# CONFIG_DECNET is not set

# CONFIG_LLC2 is not set

# CONFIG_IPX is not set

# CONFIG_ATALK is not set

# CONFIG_X25 is not set

# CONFIG_LAPB is not set

# CONFIG_NET_DIVERT is not set

# CONFIG_ECONET is not set

# CONFIG_WAN_ROUTER is not set



#

# QoS and/or fair queueing

#

# CONFIG_NET_SCHED is not set

# CONFIG_NET_CLS_ROUTE is not set



#

# Network testing

#

# CONFIG_NET_PKTGEN is not set

# CONFIG_NETPOLL is not set

# CONFIG_NET_POLL_CONTROLLER is not set

# CONFIG_HAMRADIO is not set

# CONFIG_IRDA is not set

# CONFIG_BT is not set

CONFIG_NETDEVICES=y

# CONFIG_DUMMY is not set

# CONFIG_BONDING is not set

# CONFIG_EQUALIZER is not set

# CONFIG_TUN is not set

# CONFIG_ETHERTAP is not set



#

# Ethernet (10 or 100Mbit)

#

CONFIG_NET_ETHERNET=y

# CONFIG_MII is not set



#

# Ethernet (1000 Mbit)

#



#

# Ethernet (10000 Mbit)

#



#

# Token Ring devices

#



#

# Wireless LAN (non-hamradio)

#

# CONFIG_NET_RADIO is not set



#

# Wan interfaces

#

# CONFIG_WAN is not set

# CONFIG_PPP is not set

# CONFIG_SLIP is not set

# CONFIG_SHAPER is not set

# CONFIG_NETCONSOLE is not set



#

# ISDN subsystem

#

# CONFIG_ISDN is not set



#

# Telephony Support

#

# CONFIG_PHONE is not set



#

# Input device support

#

CONFIG_INPUT=y



#

# Userland interfaces

#

CONFIG_INPUT_MOUSEDEV=y

CONFIG_INPUT_MOUSEDEV_PSAUX=y

CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024

CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768

# CONFIG_INPUT_JOYDEV is not set

# CONFIG_INPUT_TSDEV is not set

# CONFIG_INPUT_EVDEV is not set

# CONFIG_INPUT_EVBUG is not set



#

# Input I/O drivers

#

# CONFIG_GAMEPORT is not set

CONFIG_SOUND_GAMEPORT=y

CONFIG_SERIO=y

# CONFIG_SERIO_I8042 is not set

CONFIG_SERIO_SERPORT=y

# CONFIG_SERIO_CT82C710 is not set

# CONFIG_SERIO_LIBPS2 is not set

CONFIG_SERIO_RAW=m



#

# Input Device Drivers

#

# CONFIG_INPUT_KEYBOARD is not set

# CONFIG_INPUT_MOUSE is not set

# CONFIG_INPUT_JOYSTICK is not set

# CONFIG_INPUT_TOUCHSCREEN is not set

# CONFIG_INPUT_MISC is not set



#

# Character devices

#

CONFIG_VT=y

CONFIG_VT_CONSOLE=y

CONFIG_HW_CONSOLE=y

# CONFIG_SERIAL_NONSTANDARD is not set



#

# Serial drivers

#

CONFIG_SERIAL_8250=y

CONFIG_SERIAL_8250_CONSOLE=y

CONFIG_SERIAL_8250_NR_UARTS=4

# CONFIG_SERIAL_8250_EXTENDED is not set



#

# Non-8250 serial port support

#

CONFIG_SERIAL_CORE=y

CONFIG_SERIAL_CORE_CONSOLE=y

CONFIG_UNIX98_PTYS=y

CONFIG_LEGACY_PTYS=y

CONFIG_LEGACY_PTY_COUNT=256



#

# IPMI

#

# CONFIG_IPMI_HANDLER is not set



#

# Watchdog Cards

#

# CONFIG_WATCHDOG is not set

# CONFIG_RTC is not set

# CONFIG_GEN_RTC is not set

# CONFIG_DTLK is not set

# CONFIG_R3964 is not set



#

# Ftape, the floppy tape device driver

#

# CONFIG_DRM is not set

# CONFIG_RAW_DRIVER is not set



#

# I2C support

#

# CONFIG_I2C is not set



#

# Dallas's 1-wire bus

#

# CONFIG_W1 is not set



#

# Misc devices

#



#

# Multimedia devices

#

# CONFIG_VIDEO_DEV is not set



#

# Digital Video Broadcasting Devices

#

# CONFIG_DVB is not set



#

# Graphics support

#

# CONFIG_FB is not set



#

# Console display driver support

#

# CONFIG_VGA_CONSOLE is not set

CONFIG_DUMMY_CONSOLE=y

# CONFIG_BACKLIGHT_LCD_SUPPORT is not set



#

# Sound

#

# CONFIG_SOUND is not set



#

# USB support

#

# CONFIG_USB_ARCH_HAS_HCD is not set

# CONFIG_USB_ARCH_HAS_OHCI is not set



#

# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information

#



#

# USB Gadget Support

#

# CONFIG_USB_GADGET is not set



#

# MMC/SD Card support

#

# CONFIG_MMC is not set



#

# InfiniBand support

#

# CONFIG_INFINIBAND is not set



#

# File systems

#

CONFIG_EXT2_FS=y

# CONFIG_EXT2_FS_XATTR is not set

# CONFIG_EXT3_FS is not set

# CONFIG_JBD is not set

# CONFIG_REISERFS_FS is not set

# CONFIG_JFS_FS is not set

# CONFIG_XFS_FS is not set

# CONFIG_MINIX_FS is not set

# CONFIG_ROMFS_FS is not set

# CONFIG_QUOTA is not set

CONFIG_DNOTIFY=y

# CONFIG_AUTOFS_FS is not set

# CONFIG_AUTOFS4_FS is not set



#

# CD-ROM/DVD Filesystems

#

# CONFIG_ISO9660_FS is not set

# CONFIG_UDF_FS is not set



#

# DOS/FAT/NT Filesystems

#

# CONFIG_MSDOS_FS is not set

# CONFIG_VFAT_FS is not set

# CONFIG_NTFS_FS is not set



#

# Pseudo filesystems

#

CONFIG_PROC_FS=y

CONFIG_PROC_KCORE=y

CONFIG_SYSFS=y

# CONFIG_DEVFS_FS is not set

CONFIG_DEVPTS_FS_XATTR=y

CONFIG_DEVPTS_FS_SECURITY=y

# CONFIG_TMPFS is not set

# CONFIG_HUGETLB_PAGE is not set

CONFIG_RAMFS=y



#

# Miscellaneous filesystems

#

# CONFIG_ADFS_FS is not set

# CONFIG_AFFS_FS is not set

# CONFIG_HFS_FS is not set

# CONFIG_HFSPLUS_FS is not set

# CONFIG_BEFS_FS is not set

# CONFIG_BFS_FS is not set

# CONFIG_EFS_FS is not set

# CONFIG_CRAMFS is not set

# CONFIG_VXFS_FS is not set

# CONFIG_HPFS_FS is not set

# CONFIG_QNX4FS_FS is not set

# CONFIG_SYSV_FS is not set

# CONFIG_UFS_FS is not set



#

# Network File Systems

#

CONFIG_NFS_FS=y

# CONFIG_NFS_V3 is not set

# CONFIG_NFS_V4 is not set

# CONFIG_NFS_DIRECTIO is not set

CONFIG_NFSD=y

# CONFIG_NFSD_V3 is not set

# CONFIG_NFSD_TCP is not set

CONFIG_ROOT_NFS=y

CONFIG_LOCKD=y

CONFIG_EXPORTFS=y

CONFIG_SUNRPC=y

# CONFIG_RPCSEC_GSS_KRB5 is not set

# CONFIG_RPCSEC_GSS_SPKM3 is not set

# CONFIG_SMB_FS is not set

# CONFIG_CIFS is not set

# CONFIG_NCP_FS is not set

# CONFIG_CODA_FS is not set

# CONFIG_AFS_FS is not set



#

# Partition Types

#

# CONFIG_PARTITION_ADVANCED is not set

CONFIG_MSDOS_PARTITION=y



#

# Native Language Support

#

# CONFIG_NLS is not set



#

# Profiling support

#

# CONFIG_PROFILING is not set



#

# Kernel hacking

#

# CONFIG_DEBUG_KERNEL is not set

CONFIG_CROSSCOMPILE=y

CONFIG_CMDLINE="ip=bootp ether=46,0x03fe0300,eth0"



#

# Security options

#

CONFIG_KEYS=y

CONFIG_KEYS_DEBUG_PROC_KEYS=y

# CONFIG_SECURITY is not set



#

# Cryptographic options

#

# CONFIG_CRYPTO is not set



#

# Hardware crypto devices

#



#

# Library routines

#

# CONFIG_CRC_CCITT is not set

# CONFIG_CRC32 is not set

CONFIG_LIBCRC32C=m

CONFIG_GENERIC_HARDIRQS=y

CONFIG_GENERIC_IRQ_PROBE=y

arch/mips/vr4181/common/Makefile

deleted100644 → 0
+0 −7
Original line number Diff line number Diff line 
#

# Makefile for common code of NEC vr4181 based boards

#



obj-y	 := irq.o int_handler.o serial.o time.o



EXTRA_AFLAGS := $(CFLAGS)

arch/mips/vr4181/common/int_handler.S

deleted100644 → 0
+0 −206
Original line number Diff line number Diff line 
/*

 * arch/mips/vr4181/common/int_handler.S

 *

 * Adapted to the VR4181 and almost entirely rewritten:

 * Copyright (C) 1999 Bradley D. LaRonde and Michael Klar

 *

 * Clean up to conform to the new IRQ

 * Copyright (C) 2001 MontaVista Software Inc.

 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 */



#include <asm/asm.h>

#include <asm/regdef.h>

#include <asm/mipsregs.h>

#include <asm/stackframe.h>



#include <asm/vr4181/vr4181.h>



/*

 * [jsun]

 * See include/asm/vr4181/irq.h for IRQ assignment and strategy.

 */



	.text

	.set	noreorder



	.align	5

	NESTED(vr4181_handle_irq, PT_SIZE, ra)



	.set	noat

	SAVE_ALL

	CLI



	.set	at

	.set	noreorder



	mfc0	t0, CP0_CAUSE

	mfc0	t2, CP0_STATUS



	and	t0, t2



	/* we check IP3 first; it happens most frequently */

	andi	t1, t0, STATUSF_IP3

	bnez	t1, ll_cpu_ip3

	andi	t1, t0, STATUSF_IP2

	bnez	t1, ll_cpu_ip2

	andi	t1, t0, STATUSF_IP7	/* cpu timer */

	bnez	t1, ll_cputimer_irq

	andi	t1, t0, STATUSF_IP4

	bnez	t1, ll_cpu_ip4

	andi	t1, t0, STATUSF_IP5

	bnez	t1, ll_cpu_ip5

	andi	t1, t0, STATUSF_IP6

	bnez	t1, ll_cpu_ip6

	andi	t1, t0, STATUSF_IP0	/* software int 0 */

	bnez	t1, ll_cpu_ip0

	andi	t1, t0, STATUSF_IP1	/* software int 1 */

	bnez	t1, ll_cpu_ip1

	nop



	.set	reorder

do_spurious:

	j	spurious_interrupt



/*

 * regular CPU irqs

 */

ll_cputimer_irq:

	li	a0, VR4181_IRQ_TIMER

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq





ll_cpu_ip0:

	li	a0, VR4181_IRQ_SW1

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



ll_cpu_ip1:

	li	a0, VR4181_IRQ_SW2

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



ll_cpu_ip3:

	li	a0, VR4181_IRQ_INT1

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



ll_cpu_ip4:

	li	a0, VR4181_IRQ_INT2

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



ll_cpu_ip5:

	li	a0, VR4181_IRQ_INT3

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



ll_cpu_ip6:

	li	a0, VR4181_IRQ_INT4

	move	a1, sp

	jal	do_IRQ

	j	ret_from_irq



/*

 *  One of the sys irq has happend.

 *

 *  In the interest of speed, we first determine in the following order

 *  which 16-irq block have pending interrupts:

 *	sysint1 (16 sources, including cascading intrs from GPIO)

 *	sysint2

 *	gpio (16 intr sources)

 *

 *  Then we do binary search to find the exact interrupt source.

 */

ll_cpu_ip2:



	lui	t3,%hi(VR4181_SYSINT1REG)

	lhu	t0,%lo(VR4181_SYSINT1REG)(t3)

	lhu	t2,%lo(VR4181_MSYSINT1REG)(t3)

	and	t0, 0xfffb		/* hack - remove RTC Long 1 intr */

	and	t0, t2

	beqz	t0, check_sysint2



	/* check for GPIO interrupts */

	andi	t1, t0, 0x0100

	bnez	t1, check_gpio_int



	/* so we have an interrupt in sysint1 which is not gpio int */

	li	a0, VR4181_SYS_IRQ_BASE - 1

	j	check_16



check_sysint2:



	lhu	t0,%lo(VR4181_SYSINT2REG)(t3)

	lhu	t2,%lo(VR4181_MSYSINT2REG)(t3)

	and	t0, 0xfffe		/* hack - remove RTC Long 2 intr */

	and	t0, t2

	li	a0, VR4181_SYS_IRQ_BASE + 16 - 1

	j	check_16



check_gpio_int:

	lui	t3,%hi(VR4181_GPINTMSK)

	lhu	t0,%lo(VR4181_GPINTMSK)(t3)

	lhu	t2,%lo(VR4181_GPINTSTAT)(t3)

	xori	t0, 0xffff			/* why? reverse logic? */

	and	t0, t2

	li	a0, VR4181_GPIO_IRQ_BASE - 1

	j	check_16



/*

 *  When we reach check_16, we have 16-bit status in t0 and base irq number

 *  in a0.

 */

check_16:

	andi	t1, t0, 0xff

	bnez	t1, check_8



	srl	t0, 8

	addi	a0, 8

	j	check_8



/*

 *  When we reach check_8, we have 8-bit status in t0 and base irq number

 *  in a0.

 */

check_8:

	andi	t1, t0, 0xf

	bnez	t1, check_4



	srl	t0, 4

	addi	a0, 4

	j	check_4



/*

 *  When we reach check_4, we have 4-bit status in t0 and base irq number

 *  in a0.

 */

check_4:

	andi	t0, t0, 0xf

	beqz	t0, do_spurious



loop:

	andi	t2, t0, 0x1

	srl	t0, 1

	addi	a0, 1

	beqz	t2, loop



found_it:

	move	a1, sp

	jal	do_IRQ



	j	ret_from_irq



	END(vr4181_handle_irq)

arch/mips/vr4181/common/irq.c

deleted100644 → 0
+0 −239
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2001 MontaVista Software Inc.

 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net

 * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)

 *

 * linux/arch/mips/vr4181/common/irq.c

 *	Completely re-written to use the new irq.c

 *

 * Credits to Bradley D. LaRonde and Michael Klar for writing the original

 * irq.c file which was derived from the common irq.c file.

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 */

#include <linux/types.h>

#include <linux/init.h>

#include <linux/kernel_stat.h>

#include <linux/signal.h>

#include <linux/sched.h>

#include <linux/interrupt.h>

#include <linux/slab.h>

#include <linux/random.h>



#include <asm/irq.h>

#include <asm/mipsregs.h>

#include <asm/gdb-stub.h>



#include <asm/vr4181/vr4181.h>



/*

 * Strategy:

 *

 * We essentially have three irq controllers, CPU, system, and gpio.

 *

 * CPU irq controller is taken care by arch/mips/kernel/irq_cpu.c and

 * CONFIG_IRQ_CPU config option.

 *

 * We here provide sys_irq and gpio_irq controller code.

 */



static int sys_irq_base;

static int gpio_irq_base;



/* ---------------------- sys irq ------------------------ */

static void

sys_irq_enable(unsigned int irq)

{

	irq -= sys_irq_base;

	if (irq < 16) {

		*VR4181_MSYSINT1REG |= (u16)(1 << irq);

	} else {

		irq -= 16;

		*VR4181_MSYSINT2REG |= (u16)(1 << irq);

	}

}



static void

sys_irq_disable(unsigned int irq)

{

	irq -= sys_irq_base;

	if (irq < 16) {

		*VR4181_MSYSINT1REG &= ~((u16)(1 << irq));

	} else {

		irq -= 16;

		*VR4181_MSYSINT2REG &= ~((u16)(1 << irq));

	}



}



static unsigned int

sys_irq_startup(unsigned int irq)

{

	sys_irq_enable(irq);

	return 0;

}



#define sys_irq_shutdown	sys_irq_disable

#define sys_irq_ack		sys_irq_disable



static void

sys_irq_end(unsigned int irq)

{

	if(!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))

		sys_irq_enable(irq);

}



static hw_irq_controller sys_irq_controller = {

	"vr4181_sys_irq",

	sys_irq_startup,

	sys_irq_shutdown,

	sys_irq_enable,

	sys_irq_disable,

	sys_irq_ack,

	sys_irq_end,

	NULL			/* no affinity stuff for UP */

};



/* ---------------------- gpio irq ------------------------ */

/* gpio irq lines use reverse logic */

static void

gpio_irq_enable(unsigned int irq)

{

	irq -= gpio_irq_base;

	*VR4181_GPINTMSK &= ~((u16)(1 << irq));

}



static void

gpio_irq_disable(unsigned int irq)

{

	irq -= gpio_irq_base;

	*VR4181_GPINTMSK |= (u16)(1 << irq);

}



static unsigned int

gpio_irq_startup(unsigned int irq)

{

	gpio_irq_enable(irq);



	irq -= gpio_irq_base;

	*VR4181_GPINTEN |= (u16)(1 << irq );



	return 0;

}



static void

gpio_irq_shutdown(unsigned int irq)

{

	gpio_irq_disable(irq);



	irq -= gpio_irq_base;

	*VR4181_GPINTEN &= ~((u16)(1 << irq ));

}



static void

gpio_irq_ack(unsigned int irq)

{

	u16 irqtype;

	u16 irqshift;



	gpio_irq_disable(irq);



	/* we clear interrupt if it is edge triggered */

	irq -= gpio_irq_base;

	if (irq < 8) {

		irqtype = *VR4181_GPINTTYPL;

		irqshift = 2 << (irq*2);

	} else {

		irqtype = *VR4181_GPINTTYPH;

		irqshift = 2 << ((irq-8)*2);

	}

	if ( ! (irqtype & irqshift) ) {

		*VR4181_GPINTSTAT = (u16) (1 << irq);

	}

}



static void

gpio_irq_end(unsigned int irq)

{

	if(!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))

		gpio_irq_enable(irq);

}



static hw_irq_controller gpio_irq_controller = {

	"vr4181_gpio_irq",

	gpio_irq_startup,

	gpio_irq_shutdown,

	gpio_irq_enable,

	gpio_irq_disable,

	gpio_irq_ack,

	gpio_irq_end,

	NULL			/* no affinity stuff for UP */

};



/* ---------------------  IRQ init stuff ---------------------- */



extern asmlinkage void vr4181_handle_irq(void);

extern void breakpoint(void);

extern int setup_irq(unsigned int irq, struct irqaction *irqaction);

extern void mips_cpu_irq_init(u32 irq_base);



static struct irqaction cascade =

	{ no_action, SA_INTERRUPT, CPU_MASK_NONE, "cascade", NULL, NULL };

static struct irqaction reserved =

	{ no_action, SA_INTERRUPT, CPU_MASK_NONE, "cascade", NULL, NULL };



void __init arch_init_irq(void)

{

	int i;



	set_except_vector(0, vr4181_handle_irq);



	/* init CPU irqs */

	mips_cpu_irq_init(VR4181_CPU_IRQ_BASE);



	/* init sys irqs */

	sys_irq_base = VR4181_SYS_IRQ_BASE;

	for (i=sys_irq_base; i < sys_irq_base + VR4181_NUM_SYS_IRQ; i++) {

		irq_desc[i].status = IRQ_DISABLED;

		irq_desc[i].action = NULL;

		irq_desc[i].depth = 1;

		irq_desc[i].handler = &sys_irq_controller;

	}



	/* init gpio irqs */

	gpio_irq_base = VR4181_GPIO_IRQ_BASE;

	for (i=gpio_irq_base; i < gpio_irq_base + VR4181_NUM_GPIO_IRQ; i++) {

		irq_desc[i].status = IRQ_DISABLED;

		irq_desc[i].action = NULL;

		irq_desc[i].depth = 1;

		irq_desc[i].handler = &gpio_irq_controller;

	}



	/* Default all ICU IRQs to off ... */

	*VR4181_MSYSINT1REG = 0;

	*VR4181_MSYSINT2REG = 0;



	/* We initialize the level 2 ICU registers to all bits disabled. */

	*VR4181_MPIUINTREG = 0;

	*VR4181_MAIUINTREG = 0;

	*VR4181_MKIUINTREG = 0;



	/* disable all GPIO intrs */

	*VR4181_GPINTMSK = 0xffff;



	/* vector handler.  What these do is register the IRQ as non-sharable */

	setup_irq(VR4181_IRQ_INT0, &cascade);

	setup_irq(VR4181_IRQ_GIU, &cascade);



	/*

	 * RTC interrupts are interesting.  They have two destinations.

	 * One is at sys irq controller, and the other is at CPU IP3 and IP4.

	 * RTC timer is used as system timer.

	 * We enable them here, but timer routine will register later

	 * with CPU IP3/IP4.

	 */

	setup_irq(VR4181_IRQ_RTCL1, &reserved);

	setup_irq(VR4181_IRQ_RTCL2, &reserved);

}

arch/mips/vr4181/common/serial.c

deleted100644 → 0
+0 −51
Original line number Diff line number Diff line 
/*

 * Copyright 2001 MontaVista Software Inc.

 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net

 *

 * arch/mips/vr4181/common/serial.c

 *     initialize serial port on vr4181.

 *

 * This program is free software; you can redistribute	it and/or modify it

 * under  the terms of	the GNU General	 Public License as published by the

 * Free Software Foundation;  either version 2 of the  License, or (at your

 * option) any later version.

 *

 */



/*

 * [jsun, 010925]

 * You need to make sure rs_table has at least one element in

 * drivers/char/serial.c file.	There is no good way to do it right

 * now.	 A workaround is to include CONFIG_SERIAL_MANY_PORTS in your

 * configure file, which would gives you 64 ports and wastes 11K ram.

 */



#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/serial.h>



#include <asm/vr4181/vr4181.h>



void __init vr4181_init_serial(void)

{

	struct serial_struct s;



	/* turn on UART clock */

	*VR4181_CMUCLKMSK |= VR4181_CMUCLKMSK_MSKSIU;



	/* clear memory */

	memset(&s, 0, sizeof(s));



	s.line = 0;			/* we set the first one */

	s.baud_base = 1152000;

	s.irq = VR4181_IRQ_SIU;

	s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; /* STD_COM_FLAGS */

	s.iomem_base = (u8*)VR4181_SIURB;

	s.iomem_reg_shift = 0;

	s.io_type = SERIAL_IO_MEM;

	if (early_serial_setup(&s) != 0) {

		panic("vr4181_init_serial() failed!");

	}

}