root / hw / realview_gic.c @ dd4239d6
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/*
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* ARM RealView Emulation Baseboard Interrupt Controller
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*
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* Copyright (c) 2006-2007 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licenced under the GPL.
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*/
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#include "sysbus.h" |
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#define GIC_NIRQ 96 |
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#define NCPU 1 |
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/* Only a single "CPU" interface is present. */
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static inline int |
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gic_get_current_cpu(void)
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{ |
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return 0; |
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} |
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#include "arm_gic.c" |
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typedef struct { |
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gic_state gic; |
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int iomemtype;
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} RealViewGICState; |
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static uint32_t realview_gic_cpu_read(void *opaque, target_phys_addr_t offset) |
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{ |
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gic_state *s = (gic_state *)opaque; |
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return gic_cpu_read(s, gic_get_current_cpu(), offset);
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} |
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static void realview_gic_cpu_write(void *opaque, target_phys_addr_t offset, |
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uint32_t value) |
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{ |
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gic_state *s = (gic_state *)opaque; |
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gic_cpu_write(s, gic_get_current_cpu(), offset, value); |
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} |
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static CPUReadMemoryFunc * const realview_gic_cpu_readfn[] = { |
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realview_gic_cpu_read, |
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realview_gic_cpu_read, |
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realview_gic_cpu_read |
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}; |
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static CPUWriteMemoryFunc * const realview_gic_cpu_writefn[] = { |
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realview_gic_cpu_write, |
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realview_gic_cpu_write, |
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realview_gic_cpu_write |
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}; |
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static void realview_gic_map(SysBusDevice *dev, target_phys_addr_t base) |
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{ |
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RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev); |
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cpu_register_physical_memory(base, 0x1000, s->iomemtype);
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cpu_register_physical_memory(base + 0x1000, 0x1000, s->gic.iomemtype); |
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} |
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static int realview_gic_init(SysBusDevice *dev) |
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{ |
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RealViewGICState *s = FROM_SYSBUSGIC(RealViewGICState, dev); |
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gic_init(&s->gic); |
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s->iomemtype = cpu_register_io_memory(realview_gic_cpu_readfn, |
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realview_gic_cpu_writefn, s); |
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sysbus_init_mmio_cb(dev, 0x2000, realview_gic_map);
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return 0; |
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} |
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static void realview_gic_register_devices(void) |
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{ |
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sysbus_register_dev("realview_gic", sizeof(RealViewGICState), |
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realview_gic_init); |
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} |
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device_init(realview_gic_register_devices) |