diff options
Diffstat (limited to 'arch/mips/txx9/jmr3927/irq.c')
| -rw-r--r-- | arch/mips/txx9/jmr3927/irq.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c deleted file mode 100644 index c22c859a2c49..000000000000 --- a/arch/mips/txx9/jmr3927/irq.c +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ahennessy@mvista.com - * - * 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. - * - * Copyright (C) 2000-2001 Toshiba Corporation - * - * 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. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/init.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/irq.h> - -#include <asm/io.h> -#include <asm/mipsregs.h> -#include <asm/txx9/generic.h> -#include <asm/txx9/jmr3927.h> - -#if JMR3927_IRQ_END > NR_IRQS -#error JMR3927_IRQ_END > NR_IRQS -#endif - -/* - * CP0_STATUS is a thread's resource (saved/restored on context switch). - * So disable_irq/enable_irq MUST handle IOC/IRC registers. - */ -static void mask_irq_ioc(struct irq_data *d) -{ - /* 0: mask */ - unsigned int irq_nr = d->irq - JMR3927_IRQ_IOC; - unsigned char imask = jmr3927_ioc_reg_in(JMR3927_IOC_INTM_ADDR); - unsigned int bit = 1 << irq_nr; - jmr3927_ioc_reg_out(imask & ~bit, JMR3927_IOC_INTM_ADDR); - /* flush write buffer */ - (void)jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR); -} -static void unmask_irq_ioc(struct irq_data *d) -{ - /* 0: mask */ - unsigned int irq_nr = d->irq - JMR3927_IRQ_IOC; - unsigned char imask = jmr3927_ioc_reg_in(JMR3927_IOC_INTM_ADDR); - unsigned int bit = 1 << irq_nr; - jmr3927_ioc_reg_out(imask | bit, JMR3927_IOC_INTM_ADDR); - /* flush write buffer */ - (void)jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR); -} - -static int jmr3927_ioc_irqroute(void) -{ - unsigned char istat = jmr3927_ioc_reg_in(JMR3927_IOC_INTS2_ADDR); - int i; - - for (i = 0; i < JMR3927_NR_IRQ_IOC; i++) { - if (istat & (1 << i)) - return JMR3927_IRQ_IOC + i; - } - return -1; -} - -static int jmr3927_irq_dispatch(int pending) -{ - int irq; - - if ((pending & CAUSEF_IP7) == 0) - return -1; - irq = (pending >> CAUSEB_IP2) & 0x0f; - irq += JMR3927_IRQ_IRC; - if (irq == JMR3927_IRQ_IOCINT) - irq = jmr3927_ioc_irqroute(); - return irq; -} - -static struct irq_chip jmr3927_irq_ioc = { - .name = "jmr3927_ioc", - .irq_mask = mask_irq_ioc, - .irq_unmask = unmask_irq_ioc, -}; - -void __init jmr3927_irq_setup(void) -{ - int i; - - txx9_irq_dispatch = jmr3927_irq_dispatch; - /* Now, interrupt control disabled, */ - /* all IRC interrupts are masked, */ - /* all IRC interrupt mode are Low Active. */ - - /* mask all IOC interrupts */ - jmr3927_ioc_reg_out(0, JMR3927_IOC_INTM_ADDR); - /* setup IOC interrupt mode (SOFT:High Active, Others:Low Active) */ - jmr3927_ioc_reg_out(JMR3927_IOC_INTF_SOFT, JMR3927_IOC_INTP_ADDR); - - /* clear PCI Soft interrupts */ - jmr3927_ioc_reg_out(0, JMR3927_IOC_INTS1_ADDR); - /* clear PCI Reset interrupts */ - jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); - - tx3927_irq_init(); - for (i = JMR3927_IRQ_IOC; i < JMR3927_IRQ_IOC + JMR3927_NR_IRQ_IOC; i++) - irq_set_chip_and_handler(i, &jmr3927_irq_ioc, - handle_level_irq); - - /* setup IOC interrupt 1 (PCI, MODEM) */ - irq_set_chained_handler(JMR3927_IRQ_IOCINT, handle_simple_irq); -} |