/************************************************************************************ * arch/sh/include/m16c/irq.h * * Copyright (C) 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Neither the name NuttX 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. * ************************************************************************************/ /* This file should never be included directed but, rather, * only indirectly through nuttx/irq.h */ #ifndef __ARCH_SH_INCLUDE_M16C_IRQ_H #define __ARCH_SH_INCLUDE_M16C_IRQ_H /************************************************************************************ * Included Files ************************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* IRQ numbers **********************************************************************/ /* Fixed vector table */ #define M16C_UNDEFINST_IRQ 0 /* fffdc: Undefined instruction */ #define M16C_OVERFLOW_IRQ 1 /* fffe0: Overflow */ #define M16C_BRK_IRQ 2 /* fffe4: BRK instruction */ #define M16C_ADDRMATCH_IRQ 3 /* fffe8: Address match */ #ifdef CONFIG_M16C_DEBUGGER # define M16C_SSTEP_IRQ 4 /* fffec: Single step */ # define M16C_WDOG_IRQ 5 /* ffff0: Watchdog timer */ # define M16C_DBC_IRQ 6 /* ffff4: DBC */ # define M16C_NMI_IRQ 7 /* ffff8: NMI */ # define _LAST_FIXED 7 #else # define M16C_WDOG_IRQ 4 /* ffff0: Watchdog timer */ # define M16C_NMI_IRQ 5 /* ffff8: NMI */ # define _LAST_FIXED 5 #endif /* Variable vector table (fixed at address 0xffd00) */ #ifdef CONFIG_M16C_SWINTS # define M16C_BRK_IRQ (_LAST_FIXED+1) /* ffd00: BRK instruction */ # define M16C_SWINT0_IRQ M16C_BRK_IRQ /* S/W interrupt 0 */ # define M16C_INT3_IRQ (_LAST_FIXED+2) /* ffd10: INT3 */ # define M16C_SWINT4_IRQ M16C_INT3_IRQ /* S/W interrupt 4 */ # define M16C_CTXSV_SWINT (_LAST_FIXED+3) /* ffd14: Reserved -- used by NuttX */ # define M16C_SWINT5_IRQ M16C_CTXSV_SWINT /* S/W interrupt 5 */ # define M16C_SWINT6_IRQ (_LAST_FIXED+4) /* ffd18: Reserved / S/W interrupt 6 */ # define M16C_SWINT7_IRQ (_LAST_FIXED+5) /* ffd1c: Reserved / S/W interrupt 7 */ # define M16C_INT5_IRQ (_LAST_FIXED+6) /* ffd20: INT5 */ # define M16C_SWINT8_IRQ M16C_INT5_IRQ /* S/W interrupt 8 */ # define M16C_INT4_IRQ (_LAST_FIXED+7) /* ffd24: INT4 */ # define M16C_SWINT9_IRQ M16C_INT4_IRQ /* S/W interrupt 9 */ # define M16C_UART2BCD_IRQ (_LAST_FIXED+8) /* ffd28: UART2 bus collision detection */ # define M16C_SWINT10_IRQ M16C_UART2BCD_IRQ /* S/W interrupt 10 */ # define M16C_DMA0_IRQ (_LAST_FIXED+9) /* ffd2c: DMA0 */ # define M16C_SWINT11_IRQ M16C_DMA0_IRQ /* S/W interrupt 11 */ # define M16C_DMA1_IRQ (_LAST_FIXED+10) /* ffd30: DMA1 */ # define M16C_SWINT12_IRQ M16C_DMA1_IRQ /* S/W interrupt 12 */ # define M16C_KEYINP_IRQ (_LAST_FIXED+11) /* ffd34: Key input interrupt */ # define M16C_SWINT13_IRQ M16C_KEYINP_IRQ /* S/W interrupt 13 */ # define M16C_ADC_IRQ (_LAST_FIXED+12) /* ffd38: A-D */ # define M16C_SWINT14_IRQ M16C_ADC_IRQ /* S/W interrupt 14 */ # define M16C_UARTXNAK_IRQ (_LAST_FIXED+13) /* ffd3c UART2 transmit/NACK2 */ # define M16C_SWINT15_IRQ M16C_UARTNAK_IRQ /* S/W interrupt 15 */ # define M16C_UARTRACK_IRQ (_LAST_FIXED+14) /* ffd40: UART2 receive/ACK2 */ # define M16C_SWINT16_IRQ M16C_UARTRACK_IRQ /* S/W interrupt 16 */ # define M16C_UART0XMT_IRQ (_LAST_FIXED+15) /* ffd44: UART0 transmit */ # define M16C_SWINT17_IRQ M16C_UART0XMT_IRQ /* S/W interrupt 17 */ # define M16C_UART0RCV_IRQ (_LAST_FIXED+16) /* ffd48: UART0 receive */ # define M16C_SWINT18_IRQ M16C_UART0RCV_IRQ /* S/W interrupt 18 */ # define M16C_UART1XMT_IRQ (_LAST_FIXED+17) /* ffd4c: UART1 transmit */ # define M16C_SWINT19_IRQ M16C_UART1XMT_IRQ /* S/W interrupt 19 */ # define M16C_UART1RCV_IRQ (_LAST_FIXED+18) /* ffd50: UART1 receive */ # define M16C_SWINT20_IRQ M16C_UART1RCV_IRQ /* S/W interrupt 20 */ # define M16C_TMRA0_IRQ (_LAST_FIXED+19) /* ffd54: Timer A0 */ # define M16C_SWINT21_IRQ M16C_TMRA0_IRQ /* S/W interrupt 21 */ # define M16C_TMRA1_IRQ (_LAST_FIXED+20) /* ffd58: Timer A1 */ # define M16C_SWINT22_IRQ M16C_TMRA1_IRQ /* S/W interrupt 22 */ # define M16C_TMRA2_IRQ (_LAST_FIXED+21) /* ffd5c: Timer A2 */ # define M16C_SWINT23_IRQ M16C_TMRA2_IRQ /* S/W interrupt 23 */ # define M16C_TMRA3_IRQ (_LAST_FIXED+22) /* ffd60: Timer A3 */ # define M16C_SWINT24_IRQ M16C_TMRA3_IRQ /* S/W interrupt 24 */ # define M16C_TMRA4_IRQ (_LAST_FIXED+23) /* ffd64: Timer A4 */ # define M16C_SWINT25_IRQ M16C_TMRA4_IRQ /* S/W interrupt 25 */ # define M16C_TMRB0_IRQ (_LAST_FIXED+24) /* ffd68: Timer B0 */ # define M16C_SWINT26_IRQ M16C_TMRB0_IRQ /* S/W interrupt 26 */ # define M16C_TMRB1_IRQ (_LAST_FIXED+25) /* ffd6c: Timer B1 */ # define M16C_SWINT27_IRQ M16C_TMRB1_IRQ /* S/W interrupt 27 */ # define M16C_TMRB2_IRQ (_LAST_FIXED+26) /* ffd70: Timer B2 */ # define M16C_SWINT28_IRQ M16C_TMRB2_IRQ /* S/W interrupt 28 */ # define M16C_INT0_IRQ (_LAST_FIXED+27) /* ffd74: INT0 */ # define M16C_SWINT29_IRQ M16C_INT0_IRQ /* S/W interrupt 29 */ # define M16C_INT1_IRQ (_LAST_FIXED+28) /* ffd78: INT1 */ # define M16C_SWINT30_IRQ M16C_INT1_IRQ /* S/W interrupt 30 */ # define M16C_SWINT31_IRQ (_LAST_FIXED+29) /* ffd7c: Reserved / S/W interrupt 31 */ # define M16C_CTXRSTR_SWINT (_LAST_FIXED+30) /* ffd80: Used by NuttX */ # define M16C_SWINT32IRQ M16C_CTXRSTR_SWINT /* S/W interrupt 32 */ # define M16C_SWINT33_IRQ (_LAST_FIXED+31) /* ffd84: S/W interrupt 33 */ # define M16C_SWINT34_IRQ (_LAST_FIXED+32) /* ffd88: S/W interrupt 34 */ # define M16C_SWINT35_IRQ (_LAST_FIXED+33) /* ffd8c: S/W interrupt 35 */ # define M16C_SWINT36_IRQ (_LAST_FIXED+34) /* ffd90: S/W interrupt 36 */ # define M16C_SWINT37_IRQ (_LAST_FIXED+35) /* ffd94: S/W interrupt 37 */ # define M16C_SWINT38_IRQ (_LAST_FIXED+36) /* ffd98: S/W interrupt 38 */ # define M16C_SWINT39_IRQ (_LAST_FIXED+37) /* ffd9c: S/W interrupt 39 */ # define M16C_SWINT40_IRQ (_LAST_FIXED+38) /* ffda0: S/W interrupt 40 */ # define M16C_SWINT41_IRQ (_LAST_FIXED+39) /* ffda4: S/W interrupt 41 */ # define M16C_SWINT42_IRQ (_LAST_FIXED+40) /* ffda8: S/W interrupt 42 */ # define M16C_SWINT43_IRQ (_LAST_FIXED+41) /* ffdac: S/W interrupt 43 */ # define M16C_SWINT44_IRQ (_LAST_FIXED+42) /* ffdb0: S/W interrupt 44 */ # define M16C_SWINT45_IRQ (_LAST_FIXED+43) /* ffdb4: S/W interrupt 45 */ # define M16C_SWINT46_IRQ (_LAST_FIXED+44) /* ffdb8: S/W interrupt 46 */ # define M16C_SWINT47_IRQ (_LAST_FIXED+45) /* ffdbc: S/W interrupt 47 */ # define M16C_SWINT48_IRQ (_LAST_FIXED+46) /* ffdc0: S/W interrupt 48 */ # define M16C_SWINT49_IRQ (_LAST_FIXED+47) /* ffdc4: S/W interrupt 49 */ # define M16C_SWINT50_IRQ (_LAST_FIXED+48) /* ffdc8: S/W interrupt 50 */ # define M16C_SWINT51_IRQ (_LAST_FIXED+49) /* ffdcc: S/W interrupt 51 */ # define M16C_SWINT52_IRQ (_LAST_FIXED+50) /* ffdd0: S/W interrupt 52 */ # define M16C_SWINT53_IRQ (_LAST_FIXED+51) /* ffdd4: S/W interrupt 53 */ # define M16C_SWINT54_IRQ (_LAST_FIXED+52) /* ffdd8: S/W interrupt 54 */ # define M16C_SWINT55_IRQ (_LAST_FIXED+53) /* ffddc: S/W interrupt 55 */ # define M16C_SWINT56_IRQ (_LAST_FIXED+54) /* ffde0: S/W interrupt 56 */ # define M16C_SWINT57_IRQ (_LAST_FIXED+55) /* ffde4: S/W interrupt 57 */ # define M16C_SWINT58_IRQ (_LAST_FIXED+56) /* ffde8: S/W interrupt 58 */ # define M16C_SWINT59_IRQ (_LAST_FIXED+57) /* ffdec: S/W interrupt 59 */ # define M16C_SWINT60_IRQ (_LAST_FIXED+58) /* ffdf0: S/W interrupt 60 */ # define M16C_SWINT61_IRQ (_LAST_FIXED+59) /* ffdf4: S/W interrupt 61 */ # define M16C_SWINT62_IRQ (_LAST_FIXED+60) /* ffdf8: S/W interrupt 62 */ # define M16C_SWINT63_IRQ (_LAST_FIXED+61) /* ffdfc: S/W interrupt 63 */ # define NR_IRQS (_LAST_FIXED+62) /* Total number of supported IRQs */ #else # define M16C_BRK_IRQ (_LAST_FIXED+1) /* ffd00: BRK instruction */ # define M16C_INT3_IRQ (_LAST_FIXED+2) /* ffd10: INT3 */ # define M16C_CTXSV_SWINT (_LAST_FIXED+3) /* ffd14: Reserved -- SWINT5 used by NuttX */ # define M16C_INT5_IRQ (_LAST_FIXED+5) /* ffd20: INT5 */ # define M16C_INT4_IRQ (_LAST_FIXED+6) /* ffd24: INT4 */ # define M16C_UART2BCD_IRQ (_LAST_FIXED+7) /* ffd28: UART2 bus collision detection */ # define M16C_DMA0_IRQ (_LAST_FIXED+8) /* ffd2c: DMA0 */ # define M16C_DMA1_IRQ (_LAST_FIXED+9) /* ffd30: DMA1 */ # define M16C_KEYINP_IRQ (_LAST_FIXED+10) /* ffd34: Key input interrupt */ # define M16C_ADC_IRQ (_LAST_FIXED+11) /* ffd38: A-D */ # define M16C_UARTXNAK_IRQ (_LAST_FIXED+12) /* ffd3c UART2 transmit/NACK2 */ # define M16C_UARTRACK_IRQ (_LAST_FIXED+13) /* ffd40: UART2 receive/ACK2 */ # define M16C_UART0XMT_IRQ (_LAST_FIXED+14) /* ffd44: UART0 transmit */ # define M16C_UART0RCV_IRQ (_LAST_FIXED+15) /* ffd48: UART0 receive */ # define M16C_UART1XMT_IRQ (_LAST_FIXED+16) /* ffd4c: UART1 transmit */ # define M16C_UART1RCV_IRQ (_LAST_FIXED+17) /* ffd50: UART1 receive */ # define M16C_TMRA0_IRQ (_LAST_FIXED+18) /* ffd54: Timer A0 */ # define M16C_TMRA1_IRQ (_LAST_FIXED+19) /* ffd58: Timer A1 */ # define M16C_TMRA2_IRQ (_LAST_FIXED+20) /* ffd5c: Timer A2 */ # define M16C_TMRA3_IRQ (_LAST_FIXED+21) /* ffd60: Timer A3 */ # define M16C_TMRA4_IRQ (_LAST_FIXED+22) /* ffd64: Timer A4 */ # define M16C_TMRB0_IRQ (_LAST_FIXED+23) /* ffd68: Timer B0 */ # define M16C_TMRB1_IRQ (_LAST_FIXED+24) /* ffd6c: Timer B1 */ # define M16C_TMRB2_IRQ (_LAST_FIXED+25) /* ffd70: Timer B2 */ # define M16C_INT0_IRQ (_LAST_FIXED+26) /* ffd74: INT0 */ # define M16C_INT1_IRQ (_LAST_FIXED+27) /* ffd78: INT1 */ # define M16C_CTXRSTR_SWINT (_LAST_FIXED+4) /* ffd80: S/W interrupt 32, used by NuttX */ # define NR_IRQS (_LAST_FIXED+28) /* Total number of supported IRQs */ #endif /* Timer A0 is the system timer used by NuttX */ #define M16C_SYSTIMER_IRQ M16C_TMRA0_IRQ /* IRQ Stack Frame Format. The M16C has a push down stack. The CPU performs * the following actions when an interrupt is taken: * * - Save FLG register * - Clear I, D, and U flags in FLG register * - Builds stack frame like: * * sp -> PC bits 0-7 * sp+1 -> PC bits 8-15 * sp+2 -> FLG bits 0-7 * sp+3 -> FLG (Bits 12-14) + PC (bits 16-19) * * - Sets IPL * - Vectors to interrupt handler */ #define REG_FLGPCHI 0 /* 8-bit FLG (bits 12-14) + PC (bits 16-19) as would be * presented by an interrupt */ #define REG_FLG 1 /* 8-bit FLG register (bits 0-7) */ #define REG_PC 2 /* 16-bit PC [0]:bits8-15 [1]:bits 0-7 */ #define REG_FB 4 /* 16-bit FB register */ #define REG_SB 6 /* 16-bit SB register */ #define REG_A1 8 /* 16-bit A1 register */ #define REG_A0 10 /* 16-bit A0 register */ #define REG_R3 12 /* 16-bit R3 register */ #define REG_R2 14 /* 16-bit R2 register */ #define REG_R1 16 /* 16-bit R1 register */ #define REG_R0 18 /* 16-bit R0 register */ #define REG_SP 20 /* 16-bit user stack pointer */ #define XCPTCONTEXT_SIZE 22 /************************************************************************************ * Public Types ************************************************************************************/ /* This struct defines the way the registers are stored. We need to save: */ #ifndef __ASSEMBLY__ struct xcptcontext { /* The following function pointer is non-zero if there are pending signals * to be processed. */ #ifndef CONFIG_DISABLE_SIGNALS void *sigdeliver; /* Actual type is sig_deliver_t */ /* These are saved copies of LR and SR used during signal processing. */ uint8_t saved_pc[2]; uint8_t saved_flg; #endif /* Register save area */ uint8_t regs[XCPTCONTEXT_SIZE]; }; #endif /************************************************************************************ * Public Data ************************************************************************************/ #ifndef __ASSEMBLY__ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /************************************************************************************ * Inline Functions ************************************************************************************/ #ifndef __ASSEMBLY__ /* Name: up_irq_save, up_irq_restore, and friends. * * NOTE: This function should never be called from application code and, * as a general rule unless you really know what you are doing, this * function should not be called directly from operation system code either: * Typically, the wrapper functions, enter_critical_section() and * leave_critical section(), are probably what you really want. */ /* Save the current interrupt enable state & disable IRQs */ static inline irqstate_t up_irq_save(void) { irqstate_t flags; __asm__ __volatile__ ( "\tstc flg, %0\n" "\tfclr I\n" : "=r" (flags) : : "memory"); return flags; } /* Restore saved IRQ & FIQ state */ static inline void up_irq_restore(irqstate_t flags) { __asm__ __volatile__ ( "ldc %0, flg" : : "r" (flags) : "memory"); } #endif /************************************************************************************ * Public Functions ************************************************************************************/ #undef EXTERN #ifdef __cplusplus } #endif #endif #endif /* __ARCH_SH_INCLUDE_M16C_IRQ_H */