148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
#ifndef __ASM_SH64_IRQ_H
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#define __ASM_SH64_IRQ_H
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* include/asm-sh64/irq.h
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*
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* Copyright (C) 2000, 2001 Paolo Alberelli
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*
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*/
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/*
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* Encoded IRQs are not considered worth to be supported.
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* Main reason is that there's no per-encoded-interrupt
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* enable/disable mechanism (as there was in SH3/4).
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* An all enabled/all disabled is worth only if there's
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* a cascaded IC to disable/enable/ack on. Until such
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* IC is available there's no such support.
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*
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* Presumably Encoded IRQs may use extra IRQs beyond 64,
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* below. Some logic must be added to cope with IRQ_IRL?
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* in an exclusive way.
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*
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* Priorities are set at Platform level, when IRQ_IRL0-3
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* are set to 0 Encoding is allowed. Otherwise it's not
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* allowed.
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*/
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/* Independent IRQs */
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#define IRQ_IRL0 0
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#define IRQ_IRL1 1
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#define IRQ_IRL2 2
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#define IRQ_IRL3 3
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#define IRQ_INTA 4
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#define IRQ_INTB 5
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#define IRQ_INTC 6
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#define IRQ_INTD 7
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#define IRQ_SERR 12
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#define IRQ_ERR 13
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#define IRQ_PWR3 14
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#define IRQ_PWR2 15
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#define IRQ_PWR1 16
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#define IRQ_PWR0 17
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#define IRQ_DMTE0 18
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#define IRQ_DMTE1 19
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#define IRQ_DMTE2 20
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#define IRQ_DMTE3 21
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#define IRQ_DAERR 22
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#define IRQ_TUNI0 32
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#define IRQ_TUNI1 33
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#define IRQ_TUNI2 34
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#define IRQ_TICPI2 35
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#define IRQ_ATI 36
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#define IRQ_PRI 37
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#define IRQ_CUI 38
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#define IRQ_ERI 39
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#define IRQ_RXI 40
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#define IRQ_BRI 41
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#define IRQ_TXI 42
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#define IRQ_ITI 63
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#define NR_INTC_IRQS 64
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#ifdef CONFIG_SH_CAYMAN
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#define NR_EXT_IRQS 32
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#define START_EXT_IRQS 64
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/* PCI bus 2 uses encoded external interrupts on the Cayman board */
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#define IRQ_P2INTA (START_EXT_IRQS + (3*8) + 0)
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#define IRQ_P2INTB (START_EXT_IRQS + (3*8) + 1)
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#define IRQ_P2INTC (START_EXT_IRQS + (3*8) + 2)
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#define IRQ_P2INTD (START_EXT_IRQS + (3*8) + 3)
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#define I8042_KBD_IRQ (START_EXT_IRQS + 2)
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#define I8042_AUX_IRQ (START_EXT_IRQS + 6)
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#define IRQ_CFCARD (START_EXT_IRQS + 7)
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#define IRQ_PCMCIA (0)
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#else
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#define NR_EXT_IRQS 0
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#endif
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#define NR_IRQS (NR_INTC_IRQS+NR_EXT_IRQS)
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/* Default IRQs, fixed */
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#define TIMER_IRQ IRQ_TUNI0
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#define RTC_IRQ IRQ_CUI
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/* Default Priorities, Platform may choose differently */
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#define NO_PRIORITY 0 /* Disabled */
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#define TIMER_PRIORITY 2
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#define RTC_PRIORITY TIMER_PRIORITY
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#define SCIF_PRIORITY 3
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#define INTD_PRIORITY 3
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#define IRL3_PRIORITY 4
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#define INTC_PRIORITY 6
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#define IRL2_PRIORITY 7
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#define INTB_PRIORITY 9
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#define IRL1_PRIORITY 10
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#define INTA_PRIORITY 12
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#define IRL0_PRIORITY 13
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#define TOP_PRIORITY 15
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extern void disable_irq(unsigned int);
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extern void disable_irq_nosync(unsigned int);
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extern void enable_irq(unsigned int);
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extern int intc_evt_to_irq[(0xE20/0x20)+1];
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int intc_irq_describe(char* p, int irq);
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#define irq_canonicalize(irq) (irq)
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#ifdef CONFIG_SH_CAYMAN
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int cayman_irq_demux(int evt);
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int cayman_irq_describe(char* p, int irq);
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#define irq_demux(x) cayman_irq_demux(x)
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#define irq_describe(p, x) cayman_irq_describe(p, x)
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#else
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#define irq_demux(x) (intc_evt_to_irq[x])
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#define irq_describe(p, x) intc_irq_describe(p, x)
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#endif
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/*
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* Function for "on chip support modules".
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*/
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/*
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* SH-5 supports Priority based interrupts only.
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* Interrupt priorities are defined at platform level.
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*/
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#define set_ipr_data(a, b, c, d)
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#define make_ipr_irq(a)
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#define make_imask_irq(a)
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#endif /* __ASM_SH64_IRQ_H */
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