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1ce0745dd8
nuttx/arch/z80/include/z8/irq.h
patacongo 1ce0745dd8 Fleshing out ez8 context switch logic 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@684 42af7a65-404d-4744-a932-0658087f49c3
2008-02-14 20:53:15 +00:00

339 lines
12 KiB
C
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/****************************************************************************
* arch/z8/include/z8/irq.h
* arch/chip/irq.h
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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_Z8_IRQ_H
#define __ARCH_Z8_IRQ_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Definitions
****************************************************************************/
/* This is similar configuration information that is contained in ez8.h.
* However, this file must be include-able by assembly language files and,
* hence, cannot include ez8.h. The logic is fragmentary at present.
*/
#if defined(_Z8ENCORE_F642X) || defined(_Z8ENCORE_64K_SERIES)
# define ENCORE_VECTORS 1
#endif
#if defined(_Z8ENCORE_F640X) || defined(_Z8ENCORE_640_FAMILY)
# define ENCORE_VECTORS 1
#endif
#if defined(_Z8ENCORE_F08X) || defined(_Z8ENCORE_8K_SERIES)
# define ENCORE_VECTORS 1
#endif
#if defined(_Z8ENCORE_4K_SERIES)
# define ENCORE_VECTORS 1
#endif
/* ez8 Interrupt Numbers */
#if defined(ENCORE_VECTORS)
# define Z8_WDT_IRQ 0
# define Z8_TRAP_IRQ 1
# define Z8_TIMER2_IRQ 2 /* Only if EZ8_TIMER3 defined */
# define Z8_TIMER1_IRQ 3
# define Z8_TIMER0_IRQ 4
# define Z8_UART0_RX_IRQ 5 /* Only if EZ8_UART0 defined */
# define Z8_UART0_TX_IRQ 6 /* Only if EZ8_UART0 defined */
# define Z8_I2C_IRQ 7 /* Only if EZ8_I2C defined */
# define Z8_SPI_IRQ 8 /* Only if EZ8_SPI defined */
# define Z8_ADC_IRQ 9 /* Only if EZ8_ADC defined */
# define Z8_P7AD_IRQ 10
# define Z8_P6AD_IRQ 11
# define Z8_P5AD_IRQ 12
# define Z8_P4AD_IRQ 13
# define Z8_P3AD_IRQ 14
# define Z8_P2AD_IRQ 15
# define Z8_P1AD_IRQ 16
# define Z8_P0AD_IRQ 17
# define Z8_TIMER3_IRQ 18 /* Only if EZ8_TIMER4 defined */
# define Z8_UART1_RX_IRQ 19 /* Only if EZ8_UART1 defined */
# define Z8_UART1_TX_IRQ 20 /* Only if EZ8_UART1 defined */
# define Z8_DMA_IRQ 21 /* Only if EZ8_DMA defined */
# define Z8_C3_IRQ 22 /* Only if EZ8_PORT1 defined */
# define Z8_C2_IRQ 23 /* Only if EZ8_PORT1 defined */
# define Z8_C1_IRQ 24 /* Only if EZ8_PORT1 defined */
# define Z8_C0_IRQ 25 /* Only if EZ8_PORT1 defined */
# define NR_IRQS (26)
#elif defined(ENCORE_XP_VECTORS)
# define Z8_WDT_IRQ 0
# define Z8_TRAP_IRQ 1
# define Z8_TIMER2_IRQ 2 /* Only if EZ8_TIMER3 defined */
# define Z8_TIMER1_IRQ 3
# define Z8_TIMER0_IRQ 4
# define Z8_UART0_RX_IRQ 5 /* Only if EZ8_UART0 defined */
# define Z8_UART0_TX_IRQ 6 /* Only if EZ8_UART0 defined */
# define Z8_I2C_IRQ 7 /* Only if EZ8_I2C defined */
# define Z8_SPI_IRQ 8 /* Only if EZ8_SPI defined */
# define Z8_ADC_IRQ 9 /* Only if EZ8_ADC or EZ8_ADC_NEW defined */
# define Z8_P7AD_IRQ 10
# define Z8_P6AD_IRQ 11
# define Z8_P5AD_IRQ 12
# define Z8_P4AD_IRQ 13
# define Z8_P3AD_IRQ 14
# define Z8_P2AD_IRQ 15
# define Z8_P1AD_IRQ 16
# define Z8_P0AD_IRQ 17
# define Z8_TIMER3_IRQ 18 /* Only if EZ8_TIMER4 defined */
# define Z8_UART1_RX_IRQ 19 /* Only if EZ8_UART1 defined */
# define Z8_UART1_TX_IRQ 20 /* Only if EZ8_UART1 defined */
# define Z8_DMA_IRQ 21 /* Only if EZ8_DMA defined */
# define Z8_C3_IRQ 22 /* Only if EZ8_PORT1 defined */
# define Z8_C2_IRQ 23 /* Only if EZ8_PORT1 defined */
# define Z8_C1_IRQ 24 /* Only if EZ8_PORT1 defined */
# define Z8_C0_IRQ 25 /* Only if EZ8_PORT1 defined */
# define Z8_POTRAP_IRQ 27
# define Z8_WOTRAP_IRQ 28
# define NR_IRQS (29)
#elif defined(ENCORE_XP16K_VECTORS)
# define Z8_WDT_IRQ 0
# define Z8_TRAP_IRQ 1
# define Z8_TIMER2_IRQ 2 /* Only if EZ8_TIMER3 defined */
# define Z8_TIMER1_IRQ 3
# define Z8_TIMER0_IRQ 4
# define Z8_UART0_RX_IRQ 5 /* Only if EZ8_UART0 defined */
# define Z8_UART0_TX_IRQ 6 /* Only if EZ8_UART0 defined */
# define Z8_I2C_IRQ 7 /* Only if EZ8_I2C defined */
# define Z8_SPI_IRQ 8 /* Only if EZ8_ESPI defined */
# define Z8_ADC_IRQ 9 /* Only if EZ8_ADC_NEW defined */
# define Z8_P7AD_IRQ 10
# define Z8_P6AD_IRQ 11
# define Z8_P5AD_IRQ 12
# define Z8_P4AD_IRQ 13
# define Z8_P3AD_IRQ 14
# define Z8_P2AD_IRQ 15
# define Z8_P1AD_IRQ 16
# define Z8_P0AD_IRQ 17
# define Z8_MCT_IRQ 19 /* Only if EZ8_MCT defined */
# define Z8_UART1_RX_IRQ 20 /* Only if EZ8_UART1 defined */
# define Z8_UART1_TX_IRQ 21 /* Only if EZ8_UART1 defined */
# define Z8_C3_IRQ 22
# define Z8_C2_IRQ 23
# define Z8_C1_IRQ 24
# define Z8_C0_IRQ 25
# define Z8_POTRAP_IRQ 27
# define Z8_WOTRAP_IRQ 28
# define NR_IRQS (29)
#elif defined(ENCORE_MC_VECTORS)
# define Z8_WDT_IRQ 0
# define Z8_TRAP_IRQ 1
# define Z8_PWMTIMER_IRQ 2
# define Z8_PWMFAULT_IRQ 3
# define Z8_ADC_IRQ 4 /* Only if EZ8_ADC_NEW defined */
# define Z8_CMP_IRQ 5
# define Z8_TIMER0_IRQ 6
# define Z8_UART0_RX_IRQ 7 /* Only if EZ8_UART0 defined */
# define Z8_UART0_TX_IRQ 8 /* Only if EZ8_UART0 defined */
# define Z8_SPI_IRQ 9 /* Only if EZ8_SPI defined */
# define Z8_I2C_IRQ 10 /* Only if EZ8_I2C defined */
# define Z8_C0_IRQ 12
# define Z8_PB_IRQ 13
# define Z8_P7AP3A_IRQ 14
# define Z8_P6AP2A_IRQ 15
# define Z8_P5AP1A_IRQ 16
# define Z8_P4AP0A_IRQ 17
# define Z8_POTRAP_IRQ 27
# define Z8_WOTRAP_IRQ 28
# define NR_IRQS (29)
#endif
#define Z8_IRQ_SYSTIMER Z8_TIMER0_IRQ
/* IRQ State Save Formatt
*
* These indices describe how the ez8 context is save in the state save array
*
* Byte offsets:
*/
#define XCPT8_R0 (0) /* Offset 0-15: R0-R15 */
#define XCPT8_R1 (1)
#define XCPT8_R2 (2)
#define XCPT8_R3 (3)
#define XCPT8_R4 (4)
#define XCPT8_R5 (5)
#define XCPT8_R6 (6)
#define XCPT8_R7 (7)
#define XCPT8_R8 (8)
#define XCPT8_R9 (9)
#define XCPT8_R10 (10)
#define XCPT8_R11 (11)
#define XCPT8_R12 (12)
#define XCPT8_R13 (13)
#define XCPT8_R14 (14)
#define XCPT8_R15 (15)
#define XCPT8_SPH (16) /* Offset 16: SP[8:15] */
#define XCPT8_SPL (17) /* Offset 17: SP[0:7] */
#define XCPT8_RP (18) /* Offset 18: Register pointer */
#define XCPT8_FLAGS (19) /* Offset 19: FLAGS */
#define XCPT8_PCH (20) /* Offset 20: PC[8:15] */
#define XCPT8_PCL (21) /* Offset 21: PC[0:7] */
/* 16-bit "word" offsets */
#define XCPT_RR0 (0) /* Indices 0-7: RR0-RR14 */
#define XCPT_RR2 (1)
#define XCPT_RR4 (2)
#define XCPT_RR6 (3)
#define XCPT_RR8 (4)
#define XCPT_RR10 (5)
#define XCPT_RR12 (6)
#define XCPT_R1R4 (7)
#define XCPT_IRQCTL (8) /* Index 8: IRQCTL register */
#define XCPT_SP (9) /* Index 9: SP[8:15] */
#define XCPT_RPFLAGS (10) /* Index 10: RP (MS) and FLAGS (LS) */
#define XCPT_PC (11) /* Index 11: PC[8:15] */
#define XCPTCONTEXT_REGS (12)
/* Byte offsets: */
#define XCPT_R0_OFFS (2*XCPT_RR0) /* Offset 0-15: R0-R15 */
#define XCPT_R1_OFFS (2*XCPT_RR0+1)
#define XCPT_R2_OFFS (2*XCPT_RR2)
#define XCPT_R3_OFFS (2*XCPT_RR2+1)
#define XCPT_R4_OFFS (2*XCPT_RR4)
#define XCPT_R5_OFFS (2*XCPT_RR4+1)
#define XCPT_R6_OFFS (2*XCPT_RR6)
#define XCPT_R7_OFFS (2*XCPT_RR6+1)
#define XCPT_R8_OFFS (2*XCPT_RR8)
#define XCPT_R9_OFFS (2*XCPT_RR8+1)
#define XCPT_R10_OFFS (2*XCPT_RR10)
#define XCPT_R11_OFFS (2*XCPT_RR10+1)
#define XCPT_R12_OFFS (2*XCPT_RR12)
#define XCPT_R13_OFFS (2*XCPT_RR12+1)
#define XCPT_R14_OFFS (2*XCPT_R1R4)
#define XCPT_R15_OFFS (2*XCPT_R1R4+1)
#define XCPT_UNUSED_OFFS (2*XCPT_IRQCTL) /* Offset 16: Unused (zero) */
#define XCPT_IRQCTL_OFFS (2*XCPT_IRQCTL+1) /* offset 17: IRQCTL register */
#define XCPT_SPH_OFFS (2*XCPT_SP) /* Offset 18: SP[8:15] */
#define XCPT_SPL_OFFS (2*XCPT_SP+1) /* Offset 19: SP[0:7] */
#define XCPT_RP_OFFS (2*XCPT_I) /* Offset 20: Register pointer */
#define XCPT_FLAGS_OFFS (2*XCPT_I+1) /* Offset 21: FLAGS */
#define XCPT_PCH_OFFS (2*XCPT_PC) /* Offset 22: PC[8:15] */
#define XCPT_PCL_OFFS (2*XCPT_PC+1) /* Offset 23: PC[0:7] */
#define XCPTCONTEXT_SIZE (2*XCPTCONTEXT_REGS)
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/* This is the the type of the register save array */
typedef uint16 chipreg_t;
/* 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 */
uint16 saved_pc; /* Saved return address */
uint16 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_Z8_IRQ_H */
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