diff options
Diffstat (limited to 'arch/mips/tx4927')
| -rw-r--r-- | arch/mips/tx4927/common/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/tx4927/common/tx4927_irq.c | 30 | ||||
| -rw-r--r-- | arch/mips/tx4927/common/tx4927_irq_handler.S | 104 |
3 files changed, 24 insertions, 112 deletions
diff --git a/arch/mips/tx4927/common/Makefile b/arch/mips/tx4927/common/Makefile index 8fa126b296e..9cb9535ebac 100644 --- a/arch/mips/tx4927/common/Makefile +++ b/arch/mips/tx4927/common/Makefile @@ -6,7 +6,7 @@ # unless it's something special (ie not a .c file). # -obj-y += tx4927_prom.o tx4927_setup.o tx4927_irq.o tx4927_irq_handler.o +obj-y += tx4927_prom.o tx4927_setup.o tx4927_irq.o obj-$(CONFIG_TOSHIBA_FPCIB0) += smsc_fdc37m81x.o obj-$(CONFIG_KGDB) += tx4927_dbgio.o diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c index 5ab2e2b7601..8ca68015cf4 100644 --- a/arch/mips/tx4927/common/tx4927_irq.c +++ b/arch/mips/tx4927/common/tx4927_irq.c @@ -525,8 +525,6 @@ static void tx4927_irq_pic_end(unsigned int irq) */ void __init tx4927_irq_init(void) { - extern asmlinkage void tx4927_irq_handler(void); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "-\n"); TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_cp0_init()\n"); @@ -535,16 +533,12 @@ void __init tx4927_irq_init(void) TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_pic_init()\n"); tx4927_irq_pic_init(); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, - "=Calling set_except_vector(tx4927_irq_handler)\n"); - set_except_vector(0, tx4927_irq_handler); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "+\n"); return; } -int tx4927_irq_nested(void) +static int tx4927_irq_nested(void) { int sw_irq = 0; u32 level2; @@ -582,3 +576,25 @@ int tx4927_irq_nested(void) return (sw_irq); } + +asmlinkage void plat_irq_dispatch(struct pt_regs *regs) +{ + unsigned int pending = read_c0_status() & read_c0_cause(); + + if (pending & STATUSF_IP7) /* cpu timer */ + do_IRQ(TX4927_IRQ_CPU_TIMER, regs); + else if (pending & STATUSF_IP2) { /* tx4927 pic */ + unsigned int irq = tx4927_irq_nested(); + + if (unlikely(irq == 0)) { + spurious_interrupt(regs); + return; + } + do_IRQ(irq, regs); + } else if (pending & STATUSF_IP0) /* user line 0 */ + do_IRQ(TX4927_IRQ_USER0, regs); + else if (pending & STATUSF_IP1) /* user line 1 */ + do_IRQ(TX4927_IRQ_USER1, regs); + else + spurious_interrupt(regs); +} diff --git a/arch/mips/tx4927/common/tx4927_irq_handler.S b/arch/mips/tx4927/common/tx4927_irq_handler.S deleted file mode 100644 index 0b2ea02574f..00000000000 --- a/arch/mips/tx4927/common/tx4927_irq_handler.S +++ /dev/null @@ -1,104 +0,0 @@ -/* - * linux/arch/mips/tx4927/common/tx4927_irq_handler.S - * - * Primary interrupt handler for tx4927 based systems - * - * Author: MontaVista Software, Inc. - * Author: jsun@mvista.com or jsun@junsun.net - * source@mvista.com - * - * Copyright 2001-2002 MontaVista Software Inc. - * - * 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 <asm/asm.h> -#include <asm/mipsregs.h> -#include <asm/addrspace.h> -#include <asm/regdef.h> -#include <asm/stackframe.h> -#include <asm/tx4927/tx4927.h> - - .align 5 - NESTED(tx4927_irq_handler, PT_SIZE, sp) - SAVE_ALL - CLI - .set at - - mfc0 t0, CP0_CAUSE - mfc0 t1, CP0_STATUS - and t0, t1 - - andi t1, t0, STATUSF_IP7 /* cpu timer */ - bnez t1, ll_ip7 - - /* IP6..IP3 multiplexed -- do not use */ - - andi t1, t0, STATUSF_IP2 /* tx4927 pic */ - bnez t1, ll_ip2 - - andi t1, t0, STATUSF_IP0 /* user line 0 */ - bnez t1, ll_ip0 - - andi t1, t0, STATUSF_IP1 /* user line 1 */ - bnez t1, ll_ip1 - - .set reorder - - /* wrong alarm or masked ... */ - jal spurious_interrupt - nop - j ret_from_irq - END(tx4927_irq_handler) - - .align 5 - - -ll_ip7: - li a0, TX4927_IRQ_CPU_TIMER - move a1, sp - jal do_IRQ - j ret_from_irq - -ll_ip2: - jal tx4927_irq_nested - nop - beqz v0, goto_spurious_interrupt - nop - move a0, v0 - move a1, sp - jal do_IRQ - j ret_from_irq - -goto_spurious_interrupt: - j spurious_interrupt - nop - -ll_ip1: - li a0, TX4927_IRQ_USER1 - move a1, sp - jal do_IRQ - j ret_from_irq - -ll_ip0: - li a0, TX4927_IRQ_USER0 - move a1, sp - jal do_IRQ - j ret_from_irq |