From 45bbaae0dcddc275594e23f108cb68869eae7433 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Thu, 18 Nov 2010 16:07:27 +0900 Subject: ARM: mach-shmobile: Split out entry-macros in to GIC and INTC variants. Presently the entry macros are all globbed together, this simply splits them out in to their insular variants. Future work such as the GIC generalization will replace some of these and tidy the abstraction up further. Signed-off-by: Paul Mundt --- .../mach-shmobile/include/mach/entry-macro-gic.S | 89 ++++++++++++++++++ .../mach-shmobile/include/mach/entry-macro-intc.S | 39 ++++++++ arch/arm/mach-shmobile/include/mach/entry-macro.S | 104 +-------------------- 3 files changed, 132 insertions(+), 100 deletions(-) create mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-gic.S create mode 100644 arch/arm/mach-shmobile/include/mach/entry-macro-intc.S (limited to 'arch') diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S b/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S new file mode 100644 index 000000000000..50b1f16d54a2 --- /dev/null +++ b/arch/arm/mach-shmobile/include/mach/entry-macro-gic.S @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2010 Renesas Solutions Corp. + * + * 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; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =(0xf0000100) + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + /* + * The interrupt numbering scheme is defined in the + * interrupt controller spec. To wit: + * + * Interrupts 0-15 are IPI + * 16-28 are reserved + * 29-31 are local. We allow 30 to be used for the watchdog. + * 32-1020 are global + * 1021-1022 are reserved + * 1023 is "spurious" (no interrupt) + * + * For now, we ignore all local interrupts so only return an + * interrupt if it's between 30 and 1020. The test_for_ipi + * routine below will pick up on IPIs. + * + * A simple read from the controller will tell us the number of + * the highest priority enabled interrupt. We then just need to + * check whether it is in the valid range for an IRQ (30-1020 + * inclusive). + */ + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + ldr \irqstat, [\base, #GIC_CPU_INTACK] + /* bits 12-10 = src CPU, 9-0 = int # */ + + ldr \tmp, =1021 + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #29 + cmpcc \irqnr, \irqnr + cmpne \irqnr, \tmp + cmpcs \irqnr, \irqnr + + .endm + + /* + * We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm + + /* As above, this assumes that irqstat and base are preserved.. */ + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + mov \tmp, #0 + cmp \irqnr, #29 + moveq \tmp, #1 + streq \irqstat, [\base, #GIC_CPU_EOI] + cmp \tmp, #0 + .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S new file mode 100644 index 000000000000..a285d13c7416 --- /dev/null +++ b/arch/arm/mach-shmobile/include/mach/entry-macro-intc.S @@ -0,0 +1,39 @@ +/* + * Copyright (C) 2008 Renesas Solutions Corp. + * + * 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; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =INTFLGA + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqnr, [\base] + cmp \irqnr, #0 + beq 1000f + /* intevt to irq number */ + lsr \irqnr, \irqnr, #0x5 + subs \irqnr, \irqnr, #16 + +1000: + .endm diff --git a/arch/arm/mach-shmobile/include/mach/entry-macro.S b/arch/arm/mach-shmobile/include/mach/entry-macro.S index c0c264366d7a..26e401167605 100644 --- a/arch/arm/mach-shmobile/include/mach/entry-macro.S +++ b/arch/arm/mach-shmobile/include/mach/entry-macro.S @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008 Renesas Solutions Corp. + * Copyright (C) 2010 Paul Mundt * * 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 @@ -14,104 +14,8 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ -#include -#include - - .macro disable_fiq - .endm - -#if !defined(CONFIG_ARCH_SH73A0) - .macro get_irqnr_preamble, base, tmp - ldr \base, =INTFLGA - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqnr, [\base] - cmp \irqnr, #0 - beq 1000f - /* intevt to irq number */ - lsr \irqnr, \irqnr, #0x5 - subs \irqnr, \irqnr, #16 - -1000: - .endm +#if defined(CONFIG_ARM_GIC) +#include #else -/* - * arch/arm/mach-realview/include/mach/entry-macro.S - * - * Low-level IRQ helper macros for RealView platforms - * - * 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. - */ -#include - - .macro get_irqnr_preamble, base, tmp - ldr \base, =(0xf0000100) - .endm - - .macro arch_ret_to_user, tmp1, tmp2 - .endm - -/* - * The interrupt numbering scheme is defined in the - * interrupt controller spec. To wit: - * - * Interrupts 0-15 are IPI - * 16-28 are reserved - * 29-31 are local. We allow 30 to be used for the watchdog. - * 32-1020 are global - * 1021-1022 are reserved - * 1023 is "spurious" (no interrupt) - * - * For now, we ignore all local interrupts so only return an interrupt if it's - * between 30 and 1020. The test_for_ipi routine below will pick up on IPIs. - * - * A simple read from the controller will tell us the number of the highest - * priority enabled interrupt. We then just need to check whether it is in the - * valid range for an IRQ (30-1020 inclusive). - */ - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - - ldr \irqstat, [\base, #GIC_CPU_INTACK] - /* bits 12-10 = src CPU, 9-0 = int # */ - - ldr \tmp, =1021 - bic \irqnr, \irqstat, #0x1c00 - cmp \irqnr, #29 - cmpcc \irqnr, \irqnr - cmpne \irqnr, \tmp - cmpcs \irqnr, \irqnr - - .endm - - /* We assume that irqstat (the raw value of the IRQ acknowledge - * register) is preserved from the macro above. - * If there is an IPI, we immediately signal end of interrupt on the - * controller, since this requires the original irqstat value which - * we won't easily be able to recreate later. - */ - - .macro test_for_ipi, irqnr, irqstat, base, tmp - bic \irqnr, \irqstat, #0x1c00 - cmp \irqnr, #16 - strcc \irqstat, [\base, #GIC_CPU_EOI] - cmpcs \irqnr, \irqnr - .endm - - /* As above, this assumes that irqstat and base are preserved.. */ - - .macro test_for_ltirq, irqnr, irqstat, base, tmp - bic \irqnr, \irqstat, #0x1c00 - mov \tmp, #0 - cmp \irqnr, #29 - moveq \tmp, #1 - streq \irqstat, [\base, #GIC_CPU_EOI] - cmp \tmp, #0 - .endm +#include #endif -- cgit v1.2.2