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Diffstat (limited to 'include/asm-m68k/atariints.h')
| -rw-r--r-- | include/asm-m68k/atariints.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/include/asm-m68k/atariints.h b/include/asm-m68k/atariints.h deleted file mode 100644 index 5748e99..0000000 --- a/include/asm-m68k/atariints.h +++ /dev/null @@ -1,204 +0,0 @@ -/* -** atariints.h -- Atari Linux interrupt handling structs and prototypes -** -** Copyright 1994 by Björn Brauel -** -** 5/2/94 Roman Hodek: -** TT interrupt definitions added. -** -** 12/02/96: (Roman) -** Adapted to new int handling scheme (see ataints.c); revised numbering -** -** This file is subject to the terms and conditions of the GNU General Public -** License. See the file COPYING in the main directory of this archive -** for more details. -** -*/ - -#ifndef _LINUX_ATARIINTS_H_ -#define _LINUX_ATARIINTS_H_ - -#include <asm/irq.h> -#include <asm/atarihw.h> - -/* -** Atari Interrupt sources. -** -*/ - -#define STMFP_SOURCE_BASE 8 -#define TTMFP_SOURCE_BASE 24 -#define SCC_SOURCE_BASE 40 -#define VME_SOURCE_BASE 56 -#define VME_MAX_SOURCES 16 - -#define NUM_ATARI_SOURCES (VME_SOURCE_BASE+VME_MAX_SOURCES-STMFP_SOURCE_BASE) - -/* convert vector number to int source number */ -#define IRQ_VECTOR_TO_SOURCE(v) ((v) - ((v) < 0x20 ? 0x18 : (0x40-8))) - -/* convert irq_handler index to vector number */ -#define IRQ_SOURCE_TO_VECTOR(i) ((i) + ((i) < 8 ? 0x18 : (0x40-8))) - -/* interrupt service types */ -#define IRQ_TYPE_SLOW 0 -#define IRQ_TYPE_FAST 1 -#define IRQ_TYPE_PRIO 2 - -/* ST-MFP interrupts */ -#define IRQ_MFP_BUSY (8) -#define IRQ_MFP_DCD (9) -#define IRQ_MFP_CTS (10) -#define IRQ_MFP_GPU (11) -#define IRQ_MFP_TIMD (12) -#define IRQ_MFP_TIMC (13) -#define IRQ_MFP_ACIA (14) -#define IRQ_MFP_FDC (15) -#define IRQ_MFP_ACSI IRQ_MFP_FDC -#define IRQ_MFP_FSCSI IRQ_MFP_FDC -#define IRQ_MFP_IDE IRQ_MFP_FDC -#define IRQ_MFP_TIMB (16) -#define IRQ_MFP_SERERR (17) -#define IRQ_MFP_SEREMPT (18) -#define IRQ_MFP_RECERR (19) -#define IRQ_MFP_RECFULL (20) -#define IRQ_MFP_TIMA (21) -#define IRQ_MFP_RI (22) -#define IRQ_MFP_MMD (23) - -/* TT-MFP interrupts */ -#define IRQ_TT_MFP_IO0 (24) -#define IRQ_TT_MFP_IO1 (25) -#define IRQ_TT_MFP_SCC (26) -#define IRQ_TT_MFP_RI (27) -#define IRQ_TT_MFP_TIMD (28) -#define IRQ_TT_MFP_TIMC (29) -#define IRQ_TT_MFP_DRVRDY (30) -#define IRQ_TT_MFP_SCSIDMA (31) -#define IRQ_TT_MFP_TIMB (32) -#define IRQ_TT_MFP_SERERR (33) -#define IRQ_TT_MFP_SEREMPT (34) -#define IRQ_TT_MFP_RECERR (35) -#define IRQ_TT_MFP_RECFULL (36) -#define IRQ_TT_MFP_TIMA (37) -#define IRQ_TT_MFP_RTC (38) -#define IRQ_TT_MFP_SCSI (39) - -/* SCC interrupts */ -#define IRQ_SCCB_TX (40) -#define IRQ_SCCB_STAT (42) -#define IRQ_SCCB_RX (44) -#define IRQ_SCCB_SPCOND (46) -#define IRQ_SCCA_TX (48) -#define IRQ_SCCA_STAT (50) -#define IRQ_SCCA_RX (52) -#define IRQ_SCCA_SPCOND (54) - - -#define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */ -#define INT_TICKS 246 /* to make sched_time = 99.902... HZ */ - - -#define MFP_ENABLE 0 -#define MFP_PENDING 1 -#define MFP_SERVICE 2 -#define MFP_MASK 3 - -/* Utility functions for setting/clearing bits in the interrupt registers of - * the MFP. 'type' should be constant, if 'irq' is constant, too, code size is - * reduced. set_mfp_bit() is nonsense for PENDING and SERVICE registers. */ - -static inline int get_mfp_bit( unsigned irq, int type ) - -{ unsigned char mask, *reg; - - mask = 1 << (irq & 7); - reg = (unsigned char *)&mfp.int_en_a + type*4 + - ((irq & 8) >> 2) + (((irq-8) & 16) << 3); - return( *reg & mask ); -} - -static inline void set_mfp_bit( unsigned irq, int type ) - -{ unsigned char mask, *reg; - - mask = 1 << (irq & 7); - reg = (unsigned char *)&mfp.int_en_a + type*4 + - ((irq & 8) >> 2) + (((irq-8) & 16) << 3); - __asm__ __volatile__ ( "orb %0,%1" - : : "di" (mask), "m" (*reg) : "memory" ); -} - -static inline void clear_mfp_bit( unsigned irq, int type ) - -{ unsigned char mask, *reg; - - mask = ~(1 << (irq & 7)); - reg = (unsigned char *)&mfp.int_en_a + type*4 + - ((irq & 8) >> 2) + (((irq-8) & 16) << 3); - if (type == MFP_PENDING || type == MFP_SERVICE) - __asm__ __volatile__ ( "moveb %0,%1" - : : "di" (mask), "m" (*reg) : "memory" ); - else - __asm__ __volatile__ ( "andb %0,%1" - : : "di" (mask), "m" (*reg) : "memory" ); -} - -/* - * {en,dis}able_irq have the usual semantics of temporary blocking the - * interrupt, but not loosing requests that happen between disabling and - * enabling. This is done with the MFP mask registers. - */ - -static inline void atari_enable_irq( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return; - set_mfp_bit( irq, MFP_MASK ); -} - -static inline void atari_disable_irq( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return; - clear_mfp_bit( irq, MFP_MASK ); -} - -/* - * In opposite to {en,dis}able_irq, requests between turn{off,on}_irq are not - * "stored" - */ - -static inline void atari_turnon_irq( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return; - set_mfp_bit( irq, MFP_ENABLE ); -} - -static inline void atari_turnoff_irq( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return; - clear_mfp_bit( irq, MFP_ENABLE ); - clear_mfp_bit( irq, MFP_PENDING ); -} - -static inline void atari_clear_pending_irq( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return; - clear_mfp_bit( irq, MFP_PENDING ); -} - -static inline int atari_irq_pending( unsigned irq ) - -{ - if (irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE) return( 0 ); - return( get_mfp_bit( irq, MFP_PENDING ) ); -} - -unsigned long atari_register_vme_int( void ); -void atari_unregister_vme_int( unsigned long ); - -#endif /* linux/atariints.h */ |