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231a35d372
- EISA support for non PCI RMs (RM200 and RM400-xxx). The major part is the splitting of the EISA and onboard ISA of the RM200, which makes the EISA bus on the RM200 look like on other RMs. - 64bit kernel support - system type detection is now common for big and little endian - moved sniprom code to arch/mips/fw - added call_o32 function to arch/mips/fw/lib, which uses a private stack for calling prom functions - fix problem with ISA interrupts, which makes using PIT clockevent possible Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
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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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* Copyright (C) 1992 Linus Torvalds
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* Copyright (C) 1994 - 2000 Ralf Baechle
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* Copyright (C) 2006 Thomas Bogendoerfer
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*/
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <asm/i8259.h>
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#include <asm/io.h>
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#include <asm/sni.h>
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#include <asm/irq.h>
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#include <asm/irq_cpu.h>
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void (*sni_hwint)(void);
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asmlinkage void plat_irq_dispatch(void)
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{
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sni_hwint();
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}
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/* ISA irq handler */
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static irqreturn_t sni_isa_irq_handler(int dummy, void *p)
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{
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int irq;
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irq = i8259_irq();
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if (unlikely(irq < 0))
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return IRQ_NONE;
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generic_handle_irq(irq);
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return IRQ_HANDLED;
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}
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struct irqaction sni_isa_irq = {
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.handler = sni_isa_irq_handler,
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.name = "ISA",
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.flags = IRQF_SHARED | IRQF_DISABLED
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};
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/*
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* On systems with i8259-style interrupt controllers we assume for
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* driver compatibility reasons interrupts 0 - 15 to be the i8295
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* interrupts even if the hardware uses a different interrupt numbering.
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*/
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void __init arch_init_irq(void)
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{
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init_i8259_irqs(); /* Integrated i8259 */
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switch (sni_brd_type) {
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case SNI_BRD_10:
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case SNI_BRD_10NEW:
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case SNI_BRD_TOWER_OASIC:
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case SNI_BRD_MINITOWER:
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sni_a20r_irq_init();
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break;
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case SNI_BRD_PCI_TOWER:
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sni_pcit_irq_init();
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break;
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case SNI_BRD_PCI_TOWER_CPLUS:
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sni_pcit_cplus_irq_init();
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break;
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case SNI_BRD_RM200:
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sni_rm200_irq_init();
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break;
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case SNI_BRD_PCI_MTOWER:
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case SNI_BRD_PCI_DESKTOP:
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case SNI_BRD_PCI_MTOWER_CPLUS:
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sni_pcimt_irq_init();
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break;
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}
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}
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