diff options
Diffstat (limited to 'arch/mips/txx9/rbtx4938/irq.c')
| -rw-r--r-- | arch/mips/txx9/rbtx4938/irq.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/mips/txx9/rbtx4938/irq.c b/arch/mips/txx9/rbtx4938/irq.c deleted file mode 100644 index 58cd7a9272cc..000000000000 --- a/arch/mips/txx9/rbtx4938/irq.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Toshiba RBTX4938 specific interrupt handlers - * Copyright (C) 2000-2001 Toshiba Corporation - * - * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the - * terms of the GNU General Public License version 2. This program is - * licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) - */ - -/* - * MIPS_CPU_IRQ_BASE+00 Software 0 - * MIPS_CPU_IRQ_BASE+01 Software 1 - * MIPS_CPU_IRQ_BASE+02 Cascade TX4938-CP0 - * MIPS_CPU_IRQ_BASE+03 Multiplexed -- do not use - * MIPS_CPU_IRQ_BASE+04 Multiplexed -- do not use - * MIPS_CPU_IRQ_BASE+05 Multiplexed -- do not use - * MIPS_CPU_IRQ_BASE+06 Multiplexed -- do not use - * MIPS_CPU_IRQ_BASE+07 CPU TIMER - * - * TXX9_IRQ_BASE+00 - * TXX9_IRQ_BASE+01 - * TXX9_IRQ_BASE+02 Cascade RBTX4938-IOC - * TXX9_IRQ_BASE+03 RBTX4938 RTL-8019AS Ethernet - * TXX9_IRQ_BASE+04 - * TXX9_IRQ_BASE+05 TX4938 ETH1 - * TXX9_IRQ_BASE+06 TX4938 ETH0 - * TXX9_IRQ_BASE+07 - * TXX9_IRQ_BASE+08 TX4938 SIO 0 - * TXX9_IRQ_BASE+09 TX4938 SIO 1 - * TXX9_IRQ_BASE+10 TX4938 DMA0 - * TXX9_IRQ_BASE+11 TX4938 DMA1 - * TXX9_IRQ_BASE+12 TX4938 DMA2 - * TXX9_IRQ_BASE+13 TX4938 DMA3 - * TXX9_IRQ_BASE+14 - * TXX9_IRQ_BASE+15 - * TXX9_IRQ_BASE+16 TX4938 PCIC - * TXX9_IRQ_BASE+17 TX4938 TMR0 - * TXX9_IRQ_BASE+18 TX4938 TMR1 - * TXX9_IRQ_BASE+19 TX4938 TMR2 - * TXX9_IRQ_BASE+20 - * TXX9_IRQ_BASE+21 - * TXX9_IRQ_BASE+22 TX4938 PCIERR - * TXX9_IRQ_BASE+23 - * TXX9_IRQ_BASE+24 - * TXX9_IRQ_BASE+25 - * TXX9_IRQ_BASE+26 - * TXX9_IRQ_BASE+27 - * TXX9_IRQ_BASE+28 - * TXX9_IRQ_BASE+29 - * TXX9_IRQ_BASE+30 - * TXX9_IRQ_BASE+31 TX4938 SPI - * - * RBTX4938_IRQ_IOC+00 PCI-D - * RBTX4938_IRQ_IOC+01 PCI-C - * RBTX4938_IRQ_IOC+02 PCI-B - * RBTX4938_IRQ_IOC+03 PCI-A - * RBTX4938_IRQ_IOC+04 RTC - * RBTX4938_IRQ_IOC+05 ATA - * RBTX4938_IRQ_IOC+06 MODEM - * RBTX4938_IRQ_IOC+07 SWINT - */ -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <asm/mipsregs.h> -#include <asm/txx9/generic.h> -#include <asm/txx9/rbtx4938.h> - -static int toshiba_rbtx4938_irq_nested(int sw_irq) -{ - u8 level3; - - level3 = readb(rbtx4938_imstat_addr); - if (unlikely(!level3)) - return -1; - /* must use fls so onboard ATA has priority */ - return RBTX4938_IRQ_IOC + __fls8(level3); -} - -static void toshiba_rbtx4938_irq_ioc_enable(struct irq_data *d) -{ - unsigned char v; - - v = readb(rbtx4938_imask_addr); - v |= (1 << (d->irq - RBTX4938_IRQ_IOC)); - writeb(v, rbtx4938_imask_addr); - mmiowb(); -} - -static void toshiba_rbtx4938_irq_ioc_disable(struct irq_data *d) -{ - unsigned char v; - - v = readb(rbtx4938_imask_addr); - v &= ~(1 << (d->irq - RBTX4938_IRQ_IOC)); - writeb(v, rbtx4938_imask_addr); - mmiowb(); -} - -#define TOSHIBA_RBTX4938_IOC_NAME "RBTX4938-IOC" -static struct irq_chip toshiba_rbtx4938_irq_ioc_type = { - .name = TOSHIBA_RBTX4938_IOC_NAME, - .irq_mask = toshiba_rbtx4938_irq_ioc_disable, - .irq_unmask = toshiba_rbtx4938_irq_ioc_enable, -}; - -static int rbtx4938_irq_dispatch(int pending) -{ - int irq; - - if (pending & STATUSF_IP7) - irq = MIPS_CPU_IRQ_BASE + 7; - else if (pending & STATUSF_IP2) { - irq = txx9_irq(); - if (irq == RBTX4938_IRQ_IOCINT) - irq = toshiba_rbtx4938_irq_nested(irq); - } else if (pending & STATUSF_IP1) - irq = MIPS_CPU_IRQ_BASE + 0; - else if (pending & STATUSF_IP0) - irq = MIPS_CPU_IRQ_BASE + 1; - else - irq = -1; - return irq; -} - -static void __init toshiba_rbtx4938_irq_ioc_init(void) -{ - int i; - - for (i = RBTX4938_IRQ_IOC; - i < RBTX4938_IRQ_IOC + RBTX4938_NR_IRQ_IOC; i++) - irq_set_chip_and_handler(i, &toshiba_rbtx4938_irq_ioc_type, - handle_level_irq); - - irq_set_chained_handler(RBTX4938_IRQ_IOCINT, handle_simple_irq); -} - -void __init rbtx4938_irq_setup(void) -{ - txx9_irq_dispatch = rbtx4938_irq_dispatch; - /* Now, interrupt control disabled, */ - /* all IRC interrupts are masked, */ - /* all IRC interrupt mode are Low Active. */ - - /* mask all IOC interrupts */ - writeb(0, rbtx4938_imask_addr); - - /* clear SoftInt interrupts */ - writeb(0, rbtx4938_softint_addr); - tx4938_irq_init(); - toshiba_rbtx4938_irq_ioc_init(); - /* Onboard 10M Ether: High Active */ - irq_set_irq_type(RBTX4938_IRQ_ETHER, IRQF_TRIGGER_HIGH); -} |