/**************************************************************************** * arch/ez80/include/ez80/irq.h * arch/chip/irq.h * * Copyright (C) 2008-2009 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 (via arch/irq.h) */ #ifndef __ARCH_Z80_INCLUDE_EZ80_IRQ_H #define __ARCH_Z80_INCLUDE_EZ80_IRQ_H #ifndef _EZ80F91 # error "Only the EZ80F91 is currently supported" #endif /**************************************************************************** * Included Files ****************************************************************************/ #ifndef __ASSEMBLY__ # include #endif /**************************************************************************** * Definitions ****************************************************************************/ /* ez80 Interrupt Numbers ***************************************************/ #define EZ80_EMACRX_IRQ (0) /* Vector 0x40 */ #define EZ80_EMACTX_IRQ (1) /* Vector 0x44 */ #define EZ80_EMACSYS_IRQ (2) /* Vector 0x48 */ #define EZ80_PLL_IRQ (3) /* Vector 0x4c */ #define EZ80_FLASH_IRQ (4) /* Vector 0x50 */ #define EZ80_TIMER0_IRQ (5) /* Vector 0x54 */ #define EZ80_TIMER1_IRQ (6) /* Vector 0x58 */ #define EZ80_TIMER2_IRQ (7) /* Vector 0x5c */ #define EZ80_TIMER3_IRQ (8) /* Vector 0x60 */ #define EZ80_RTC_IRQ (9) /* Vector 0x6C */ #define EZ80_UART0_IRQ (10) /* Vector 0x70 */ #define EZ80_UART1_IRQ (11) /* Vector 0x74 */ #define EZ80_I2C_IRQ (12) /* Vector 0x78 */ #define EZ80_SPI_IRQ (13) /* Vector 0x7c */ #define EZ80_PORTA0_IRQ (14) /* Vector 0x80 */ #define EZ80_PORTA1_IRQ (15) /* Vector 0x84 */ #define EZ80_PORTA2_IRQ (16) /* Vector 0x88 */ #define EZ80_PORTA3_IRQ (17) /* Vector 0x8c */ #define EZ80_PORTA4_IRQ (18) /* Vector 0x90 */ #define EZ80_PORTA5_IRQ (19) /* Vector 0x94 */ #define EZ80_PORTA6_IRQ (20) /* Vector 0x98 */ #define EZ80_PORTA7_IRQ (21) /* Vector 0x9c */ #define EZ80_PORTB0_IRQ (22) /* Vector 0xa0 */ #define EZ80_PORTB1_IRQ (23) /* Vector 0xa4 */ #define EZ80_PORTB2_IRQ (24) /* Vector 0xa8 */ #define EZ80_PORTB3_IRQ (25) /* Vector 0xac */ #define EZ80_PORTB4_IRQ (26) /* Vector 0xb0 */ #define EZ80_PORTB5_IRQ (27) /* Vector 0xb4 */ #define EZ80_PORTB6_IRQ (28) /* Vector 0xb8 */ #define EZ80_PORTB7_IRQ (29) /* Vector 0xbc */ #define EZ80_PORTC0_IRQ (30) /* Vector 0xc0 */ #define EZ80_PORTC1_IRQ (31) /* Vector 0xc4 */ #define EZ80_PORTC2_IRQ (32) /* Vector 0xc8 */ #define EZ80_PORTC3_IRQ (33) /* Vector 0xcc */ #define EZ80_PORTC4_IRQ (34) /* Vector 0xd0 */ #define EZ80_PORTC5_IRQ (35) /* Vector 0xd4 */ #define EZ80_PORTC6_IRQ (36) /* Vector 0xd8 */ #define EZ80_PORTC7_IRQ (37) /* Vector 0xdc */ #define EZ80_PORTD0_IRQ (38) /* Vector 0xe0 */ #define EZ80_PORTD1_IRQ (39) /* Vector 0xe4 */ #define EZ80_PORTD2_IRQ (40) /* Vector 0xe8 */ #define EZ80_PORTD3_IRQ (41) /* Vector 0xec */ #define EZ80_PORTD4_IRQ (42) /* Vector 0xf0 */ #define EZ80_PORTD5_IRQ (43) /* Vector 0xf4 */ #define EZ80_PORTD6_IRQ (44) /* Vector 0xf8 */ #define EZ80_PORTD7_IRQ (45) /* Vector 0xfc */ #define NR_IRQS (46) #define EZ80_IRQ_SYSTIMER EZ80_TIMER0_IRQ /* IRQ Management Macros ****************************************************/ /* IRQ State Save Format **************************************************** * * These indices describe how the ez8 context is save in the state save array * * Byte offsets: */ /* IRQ Stack Frame Format * * This stack frame is created on each interrupt. These registers are stored * in the TCB to many context switches. */ /* chipreg_t indices */ #define XCPT_I (0) /* Index 0: 16-bit interrupt vector register */ #define XCPT_BC (1) /* Index 1: Saved 16-bit BC register */ #define XCPT_DE (2) /* Index 2: Saved 16-bit DE register */ #define XCPT_IX (3) /* Index 3: Saved 16-bit IX register */ #define XCPT_IY (4) /* Index 4: Saved 16-bit IY register */ #define XCPT_SP (5) /* Index 5: Saved 16-bit SP at time of interrupt */ #define XCPT_HL (6) /* Index 6: Saved 16-bit HL register */ #define XCPT_AF (7) /* Index 7: Saved 16-bit AF register */ #define XCPT_PC (8) /* Index 8: Offset to 16-bit PC at time of interrupt */ #define XCPTCONTEXT_REGS (9) #ifdef CONFIG_EZ80_Z80MODE /* Byte offsets */ # define XCPT_I_OFFSET (2*XCPT_I) /* Offset 0: 16-bit interrupt vector register */ # define XCPT_IF_OFFSET (2*XCPT_I+0) /* Offset 1: Saved flags. P set if interrupts enabled */ # define XCPT_IA_OFFSET (2*XCPT_I+1) /* Offset 2: Saved lower 8-bits of interrupt vector register */ # define XCPT_BC_OFFSET (2*XCPT_BC) /* Offset 2: Saved 16-bit BC register */ # define XCPT_C_OFFSET (2*XCPT_BC+0) /* Offset 2: Saved 8-bit C register */ # define XCPT_B_OFFSET (2*XCPT_BC+1) /* Offset 3: Saved 8-bit D register */ # define XCPT_DE_OFFSET (2*XCPT_DE) /* Offset 4: Saved 16-bit DE register */ # define XCPT_E_OFFSET (2*XCPT_DE+0) /* Offset 4: Saved 8-bit E register */ # define XCPT_D_OFFSET (2*XCPT_DE+1) /* Offset 5: Saved 8-bit D register */ # define XCPT_IX_OFFSET (2*XCPT_IX) /* Offset 6: Saved 16-bit IX register */ # define XCPT_IY_OFFSET (2*XCPT_IY) /* Offset 8: Saved 16-bit IY register */ # define XCPT_SP_OFFSET (2*XCPT_SP) /* Offset 10: Saved 16-bit SP at time of interrupt */ # define XCPT_HL_OFFSET (2*XCPT_HL) /* Offset 12: Saved 16-bit HL register */ # define XCPT_L_OFFSET (2*XCPT_HL+0) /* Offset 12: Saved 8-bit L register */ # define XCPT_H_OFFSET (2*XCPT_HL+1) /* Offset 13: Saved 8-bit H register */ # define XCPT_AF_OFFSET (2*XCPT_AF) /* Offset 14: Saved 16-bit AF register */ # define XCPT_F_OFFSET (2*XCPT_AF+0) /* Offset 14: Saved flags */ # define XCPT_A_OFFSET (2*XCPT_AF+1) /* Offset 15: Saved 8-bit A register */ # define XCPT_PC_OFFSET (2*XCPT_PC) /* Offset 16: Offset to 16-bit PC at time of interrupt */ # define XCPTCONTEXT_SIZE (2*XCPTCONTEXT_REGS) #else /* Byte offsets */ # define XCPT_I_OFFSET (3*XCPT_I) /* Offset 0: Saved 24-bit interrupt vector register */ # define XCPT_IF_OFFSET (2*XCPT_I+1) /* Offset 1: Saved flags. P set if interrupts enabled */ # define XCPT_IA_OFFSET (2*XCPT_I+2) /* Offset 2: Saved lower 8-bits of interrupt vector register */ # define XCPT_BC_OFFSET (3*XCPT_BC) /* Offset 3: Saved 24-bit BC register */ # define XCPT_C_OFFSET (3*XCPT_BC+1) /* Offset 4: Saved 8-bit C register */ # define XCPT_B_OFFSET (3*XCPT_BC+2) /* Offset 5: Saved 8-bit D register */ # define XCPT_DE_OFFSET (3*XCPT_DE) /* Offset 6: Saved 24-bit DE register */ # define XCPT_E_OFFSET (3*XCPT_DE+1) /* Offset 7: Saved 8-bit E register */ # define XCPT_D_OFFSET (3*XCPT_DE+2) /* Offset 8: Saved 8-bit D register */ # define XCPT_IX_OFFSET (3*XCPT_IX) /* Offset 9: Saved 24-bit IX register */ # define XCPT_IY_OFFSET (3*XCPT_IY) /* Offset 12: Saved 24-bit IY register */ # define XCPT_SP_OFFSET (3*XCPT_SP) /* Offset 15: Saved 24-bit SP at time of interrupt */ # define XCPT_HL_OFFSET (3*XCPT_HL) /* Offset 18: Saved 24-bit HL register */ # define XCPT_L_OFFSET (3*XCPT_HL+1) /* Offset 19: Saved 8-bit L register */ # define XCPT_H_OFFSET (3*XCPT_HL+2) /* Offset 20: Saved 8-bit H register */ # define XCPT_AF_OFFSET (3*XCPT_AF) /* Offset 21: Saved AF register */ # define XCPT_F_OFFSET (3*XCPT_AF+1) /* Offset 22: Saved AF register */ # define XCPT_A_OFFSET (3*XCPT_AF+2) /* Offset 23: Saved 8-bit A register */ # define XCPT_PC_OFFSET (3*XCPT_PC) /* Offset 24: Offset to 24-bit PC at time of interrupt */ # define XCPTCONTEXT_SIZE (3*XCPTCONTEXT_REGS) #endif /**************************************************************************** * Public Types ****************************************************************************/ #ifndef __ASSEMBLY__ /* This is the type of the register save array */ #ifdef CONFIG_EZ80_Z80MODE typedef uint16_t chipreg_t; #else typedef uint24_t chipreg_t; #endif /* This struct defines the way the registers are stored. */ struct xcptcontext { /* Register save area */ chipreg_t regs[XCPTCONTEXT_REGS]; /* The following function pointer is non-zero if there * are pending signals to be processed. */ #ifndef CONFIG_DISABLE_SIGNALS CODE void *sigdeliver; /* Actual type is sig_deliver_t */ /* The following retains that state during signal execution */ chipreg_t saved_pc; /* Saved return address */ chipreg_t saved_i; /* Saved interrupt state */ #endif }; #endif /**************************************************************************** * Inline functions ****************************************************************************/ /**************************************************************************** * Public Variables ****************************************************************************/ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifndef __ASSEMBLY__ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif EXTERN irqstate_t irqsave(void); EXTERN void irqrestore(irqstate_t flags); #undef EXTERN #ifdef __cplusplus } #endif #endif #endif /* __ARCH_Z80_INCLUDE_EZ80_IRQ_H */