* support for msm7x27a interrupt
Signed-off-by: Srikanth Reddy Vintha srikanth.reddy@lntinfotech.com --- arch/arm/cpu/armv7/msm7x27a/Makefile | 1 + arch/arm/cpu/armv7/msm7x27a/interrupts.c | 136 +++++++++++++++++++++++ arch/arm/include/asm/arch-msm7x27a/exclusion.h | 42 +++++++ arch/arm/include/asm/arch-msm7x27a/interrupts.h | 39 +++++++ arch/arm/include/asm/arch-msm7x27a/irqs.h | 98 ++++++++++++++++ board/qcom/msm7x27a_surf/msm7x27a_surf.c | 2 + include/configs/msm7x27a_surf.h | 2 +- 7 files changed, 319 insertions(+), 1 deletions(-) create mode 100644 arch/arm/cpu/armv7/msm7x27a/interrupts.c create mode 100644 arch/arm/include/asm/arch-msm7x27a/exclusion.h create mode 100644 arch/arm/include/asm/arch-msm7x27a/interrupts.h create mode 100644 arch/arm/include/asm/arch-msm7x27a/irqs.h
diff --git a/arch/arm/cpu/armv7/msm7x27a/Makefile b/arch/arm/cpu/armv7/msm7x27a/Makefile index 5f493d7..19e7546 100644 --- a/arch/arm/cpu/armv7/msm7x27a/Makefile +++ b/arch/arm/cpu/armv7/msm7x27a/Makefile @@ -34,6 +34,7 @@ COBJS-y := board.o COBJS-y += timer.o COBJS-y += acpuclock.o COBJS-y += gpio.o +COBJS-$(CONFIG_USE_IRQ) += interrupts.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS-y) $(SOBJS-y)) diff --git a/arch/arm/cpu/armv7/msm7x27a/interrupts.c b/arch/arm/cpu/armv7/msm7x27a/interrupts.c new file mode 100644 index 0000000..cc45c4b --- /dev/null +++ b/arch/arm/cpu/armv7/msm7x27a/interrupts.c @@ -0,0 +1,136 @@ +/* + * Copyright (c) 2008, Google Inc. + * All rights reserved. + * + * (C) Copyright 2012 + * Larsen & Toubro Infotech Ltd. <www.lntinfotech.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google, Inc. nor the names of its contributors + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/arch/interrupts.h> +#include <asm/arch/irqs.h> +#include <asm/arch/iomap.h> +#include <asm/arch/exclusion.h> + +#define VIC_REG(off) (MSM_VIC_BASE + (off)) + +#define VIC_INT_SELECT0 VIC_REG(0x0000) /* 1: FIQ, 0: IRQ */ +#define VIC_INT_SELECT1 VIC_REG(0x0004) /* 1: FIQ, 0: IRQ */ +#define VIC_INT_EN0 VIC_REG(0x0010) +#define VIC_INT_EN1 VIC_REG(0x0014) +#define VIC_INT_ENCLEAR0 VIC_REG(0x0020) +#define VIC_INT_ENCLEAR1 VIC_REG(0x0024) +#define VIC_INT_ENSET0 VIC_REG(0x0030) +#define VIC_INT_ENSET1 VIC_REG(0x0034) +#define VIC_INT_TYPE0 VIC_REG(0x0040) /* 1: EDGE, 0: LEVEL */ +#define VIC_INT_TYPE1 VIC_REG(0x0044) /* 1: EDGE, 0: LEVEL */ +#define VIC_INT_POLARITY0 VIC_REG(0x0050) /* 1: NEG, 0: POS */ +#define VIC_INT_POLARITY1 VIC_REG(0x0054) /* 1: NEG, 0: POS */ +#define VIC_NO_PEND_VAL VIC_REG(0x0060) +#define VIC_INT_MASTEREN VIC_REG(0x0064) /* 1: IRQ, 2: FIQ */ +#define VIC_PROTECTION VIC_REG(0x006C) /* 1: ENABLE */ +#define VIC_CONFIG VIC_REG(0x0068) /* 1: USE ARM1136 VIC */ +#define VIC_IRQ_STATUS0 VIC_REG(0x0080) +#define VIC_IRQ_STATUS1 VIC_REG(0x0084) +#define VIC_FIQ_STATUS0 VIC_REG(0x0090) +#define VIC_FIQ_STATUS1 VIC_REG(0x0094) +#define VIC_RAW_STATUS0 VIC_REG(0x00A0) +#define VIC_RAW_STATUS1 VIC_REG(0x00A4) +#define VIC_INT_CLEAR0 VIC_REG(0x00B0) +#define VIC_INT_CLEAR1 VIC_REG(0x00B4) +#define VIC_SOFTINT0 VIC_REG(0x00C0) +#define VIC_SOFTINT1 VIC_REG(0x00C4) +#define VIC_IRQ_VEC_RD VIC_REG(0x00D0) /* pending int # */ +#define VIC_IRQ_VEC_PEND_RD VIC_REG(0x00D4) /* pending vector addr */ +#define VIC_IRQ_VEC_WR VIC_REG(0x00D8) +#define VIC_IRQ_IN_SERVICE VIC_REG(0x00E0) +#define VIC_IRQ_IN_STACK VIC_REG(0x00E4) +#define VIC_TEST_BUS_SEL VIC_REG(0x00E8) + +struct ihandler { + int_handler func; + void *arg; +}; + +static struct ihandler handler[NR_IRQS]; + +int arch_interrupt_init(void) +{ + writel(0xffffffff, VIC_INT_CLEAR0); + writel(0xffffffff, VIC_INT_CLEAR1); + writel(0, VIC_INT_SELECT0); + writel(0, VIC_INT_SELECT1); + writel(0xffffffff, VIC_INT_TYPE0); + writel(0xffffffff, VIC_INT_TYPE1); + writel(0, VIC_CONFIG); + writel(1, VIC_INT_MASTEREN); + return 0; +} + +void do_irq(struct pt_regs *pt_regs) +{ + unsigned num; + num = readl(VIC_IRQ_VEC_RD); + num = readl(VIC_IRQ_VEC_PEND_RD); + if (num > NR_IRQS) + return; + (void) handler[num].func(handler[num].arg); + writel(1 << (num & 31), (num > 31) ? VIC_INT_CLEAR1 : VIC_INT_CLEAR0); + writel(0, VIC_IRQ_VEC_WR); +} + +int mask_interrupt(unsigned int vector) +{ + unsigned reg = (vector > 31) ? VIC_INT_ENCLEAR1 : VIC_INT_ENCLEAR0; + unsigned bit = 1 << (vector & 31); + writel(bit, reg); + return 0; +} + +int unmask_interrupt(unsigned int vector) +{ + unsigned reg = (vector > 31) ? VIC_INT_ENSET1 : VIC_INT_ENSET0; + unsigned bit = 1 << (vector & 31); + writel(bit, reg); + return 0; +} + +void register_int_handler(unsigned int vector, int_handler func, void *arg) +{ + if (vector >= NR_IRQS) { + debug("Could not set interrupt %#08x", vector); + return; + } + enter_critical_section(); + handler[vector].func = func; + handler[vector].arg = arg; + exit_critical_section(); +} + diff --git a/arch/arm/include/asm/arch-msm7x27a/exclusion.h b/arch/arm/include/asm/arch-msm7x27a/exclusion.h new file mode 100644 index 0000000..e98716e --- /dev/null +++ b/arch/arm/include/asm/arch-msm7x27a/exclusion.h @@ -0,0 +1,42 @@ +/* + * (C) Copyright 2012 + * Larsen & Toubro Infotech Ltd. <www.lntinfotech.com> + * + * 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef __EXCLUSION_H +#define __EXCLUSION_H +#include <common.h> + +/* critical sections */ +extern int critical_section_count; + +static inline __attribute__((always_inline)) void enter_critical_section(void) +{ + critical_section_count++; + if (critical_section_count == 1) + disable_interrupts(); +} + +static inline __attribute__((always_inline)) void exit_critical_section(void) +{ + critical_section_count--; + if (critical_section_count == 0) + enable_interrupts(); +} + +#endif diff --git a/arch/arm/include/asm/arch-msm7x27a/interrupts.h b/arch/arm/include/asm/arch-msm7x27a/interrupts.h new file mode 100644 index 0000000..c8e0368 --- /dev/null +++ b/arch/arm/include/asm/arch-msm7x27a/interrupts.h @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2008 Travis Geiselbrecht + * + * (C) Copyright 2012 + * Larsen & Toubro Infotech Ltd. <www.lntinfotech.com> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files + * (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, + * subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef __PLATFORM_INTERRUPTS_H +#define __PLATFORM_INTERRUPTS_H + +enum handler_return { + INT_NO_RESCHEDULE = 0, + INT_RESCHEDULE, +}; + +typedef enum handler_return (*int_handler)(void *arg); + +void register_int_handler(unsigned int vector, int_handler handler, void *arg); +int mask_interrupt(unsigned int vector); +int unmask_interrupt(unsigned int vector); +#endif diff --git a/arch/arm/include/asm/arch-msm7x27a/irqs.h b/arch/arm/include/asm/arch-msm7x27a/irqs.h new file mode 100644 index 0000000..868d185 --- /dev/null +++ b/arch/arm/include/asm/arch-msm7x27a/irqs.h @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2008, Google Inc. + * All rights reserved. + * + * (C) Copyright 2012 + * Larsen & Toubro Infotech Ltd. <www.lntinfotech.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google, Inc. nor the names of its contributors + * may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 + * COPYRIGHT OWNER OR CONTRIBUTORS 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. + */ + +#ifndef _PLATFORM_MSM7K_IRQS_H_ +#define _PLATFORM_MSM7K_IRQS_H_ + +#define INT_A9_M2A_0 0 +#define INT_A9_M2A_1 1 +#define INT_A9_M2A_2 2 +#define INT_A9_M2A_3 3 +#define INT_A9_M2A_4 4 +#define INT_A9_M2A_5 5 +#define INT_A9_M2A_6 6 +#define INT_GP_TIMER_EXP 7 +#define INT_DEBUG_TIMER_EXP 8 +#define INT_UART1 9 +#define INT_UART2 10 +#define INT_UART3 11 +#define INT_UART1_RX 12 +#define INT_UART2_RX 13 +#define INT_UART3_RX 14 +#define INT_USB_OTG 15 +#define INT_MDDI_PRI 16 +#define INT_MDDI_EXT 17 +#define INT_MDDI_CLIENT 18 +#define INT_MDP 19 +#define INT_GRAPHICS 20 +#define INT_ADM_AARM 21 +#define INT_ADSP_A11 22 +#define INT_ADSP_A9_A11 23 +#define INT_SDC1_0 24 +#define INT_SDC1_1 25 +#define INT_SDC2_0 26 +#define INT_SDC2_1 27 +#define INT_KEYSENSE 28 +#define INT_TCHSCRN_SSBI 29 +#define INT_TCHSCRN1 30 +#define INT_TCHSCRN2 31 + +#define INT_GPIO_GROUP1 (32 + 0) +#define INT_GPIO_GROUP2 (32 + 1) +#define INT_PWB_I2C (32 + 2) +#define INT_NAND_WR_ER_DONE (32 + 3) +#define INT_NAND_OP_DONE (32 + 4) +#define INT_SOFTRESET (32 + 5) +#define INT_PBUS_ARM11 (32 + 6) +#define INT_AXI_MPU_SMI (32 + 7) +#define INT_AXI_MPU_EBI1 (32 + 8) +#define INT_AD_HSSD (32 + 9) +#define INT_ARM11_PM (32 + 10) +#define INT_ARM11_DMA (32 + 11) +#define INT_TSIF_IRQ (32 + 12) +#define INT_UART1DM_IRQ (32 + 13) +#define INT_UART1DM_RX (32 + 14) +#define INT_USB_HS (32 + 15) +#define INT_SDC3_0 (32 + 16) +#define INT_SDC3_1 (32 + 17) +#define INT_SDC4_0 (32 + 18) +#define INT_SDC4_1 (32 + 19) +#define INT_UART2DM_RX (32 + 20) +#define INT_UART2DM_IRQ (32 + 21) + +#define MSM_IRQ_BIT(irq) (1 << ((irq) & 31)) + +#define NR_IRQS 54 + +#endif diff --git a/board/qcom/msm7x27a_surf/msm7x27a_surf.c b/board/qcom/msm7x27a_surf/msm7x27a_surf.c index 9199f48..cc8f000 100644 --- a/board/qcom/msm7x27a_surf/msm7x27a_surf.c +++ b/board/qcom/msm7x27a_surf/msm7x27a_surf.c @@ -29,11 +29,13 @@ #include <asm/arch/proc_comm.h> #include "msm7x27a_surf.h"
+int critical_section_count; DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_BOARD_EARLY_INIT_F int board_early_init_f() { + critical_section_count = 0; uart1_clock_init(); return 0; } diff --git a/include/configs/msm7x27a_surf.h b/include/configs/msm7x27a_surf.h index a82ba59..2b5efb8 100644 --- a/include/configs/msm7x27a_surf.h +++ b/include/configs/msm7x27a_surf.h @@ -98,7 +98,7 @@ /*--------------------------------------------------------------------- * IRQ Settings */ - +#define CONFIG_USE_IRQ #define CONFIG_STACKSIZE_IRQ (4*1024) /* IRQ stack */ #define CONFIG_STACKSIZE_FIQ (4*1024) /* FIQ stack */