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/* |
/* |
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* Copyright (C) 2005-2006 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* $Id: dev_gc.c,v 1.8 2006/02/27 05:32:26 debug Exp $ |
* $Id: dev_openpic.c,v 1.14 2007/09/11 21:42:52 debug Exp $ |
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* |
* |
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* Grand Central Interrupt controller (used by MacPPC). |
* COMMENT: OpenPIC Interrupt controller (used by sandpoint ppc) |
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* based on dev_gc.c |
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*/ |
*/ |
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#include <stdio.h> |
#include <stdio.h> |
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#include "cpu.h" |
#include "cpu.h" |
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#include "device.h" |
#include "device.h" |
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#include "devices.h" |
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#include "machine.h" |
#include "machine.h" |
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#include "memory.h" |
#include "memory.h" |
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#include "misc.h" |
#include "misc.h" |
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DEVICE_ACCESS(gc) |
#define DEV_OPENPIC_LENGTH 0x40000 |
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struct openpic_data { |
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struct interrupt cpu_irq; |
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uint32_t status_hi; |
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uint32_t status_lo; |
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uint32_t enable_hi; |
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uint32_t enable_lo; |
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}; |
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void openpic_hi_interrupt_assert(struct interrupt *interrupt) |
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{ |
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struct openpic_data *d = interrupt->extra; |
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d->status_hi |= interrupt->line; |
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if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
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void openpic_hi_interrupt_deassert(struct interrupt *interrupt) |
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{ |
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struct openpic_data *d = interrupt->extra; |
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d->status_hi &= ~interrupt->line; |
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if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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} |
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void openpic_lo_interrupt_assert(struct interrupt *interrupt) |
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{ |
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struct openpic_data *d = interrupt->extra; |
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d->status_lo |= interrupt->line; |
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if (d->status_lo & d->enable_lo || d->status_hi & d->enable_hi) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
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void openpic_lo_interrupt_deassert(struct interrupt *interrupt) |
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{ |
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struct openpic_data *d = interrupt->extra; |
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d->status_lo &= ~interrupt->line; |
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if (!(d->status_lo & d->enable_lo || d->status_hi & d->enable_hi)) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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} |
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/* |
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* FIXME acitvity is never sat |
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*/ |
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#define OPENPIC_MASK 0x80000000 |
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#define OPENPIC_ACTIVITY 0x40000000 /* Read Only */ |
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#define OPENPIC_PRIORITY_MASK 0x000f0000 |
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#define OPENPIC_PRIORITY_SHIFT 16 |
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#define OPENPIC_VECTOR_MASK 0x000000ff |
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#define OPENPIC_VEC_TIMER 64 /* and up */ |
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#define OPENPIC_VEC_IPI 72 /* and up */ |
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#define OPENPIC_VEC_SPURIOUS 127 |
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#define OPENPIC_NUM_TIMERS 4 |
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#define OPENPIC_NUM_IPI 4 |
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#define OPENPIC_NUM_PRI 16 |
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#define OPENPIC_NUM_VECTORS 256 |
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DEVICE_ACCESS(openpic) |
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{ |
{ |
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struct gc_data *d = extra; |
// struct openpic_data *d = extra; |
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uint64_t idata = 0, odata = 0; |
uint64_t idata = 0, odata = 0; |
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if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) { |
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idata = memory_readmax64(cpu, data, len); |
idata = memory_readmax64(cpu, data, len); |
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// shuffle byte order |
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idata = |
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( idata & 0x000000ff ) << 24 | |
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( idata & 0x0000ff00 ) << 8 | |
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( idata & 0x00ff0000 ) >> 8 | |
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( idata & 0xff000000 ) >> 24 ; |
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uint64_t priority,vector, active; |
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priority = ( idata & OPENPIC_PRIORITY_MASK ) >> OPENPIC_PRIORITY_SHIFT; |
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vector = ( idata & OPENPIC_VECTOR_MASK ); |
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active = ( idata & OPENPIC_ACTIVITY ); |
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debug("[ openpic: WRITE %05x | %08x | priority: %x vector: 0x%02x %d active: %x ]\n", |
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(int)relative_addr, (int)idata, (int)priority, (int)vector, (int)vector, (int)active ); |
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} |
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switch (relative_addr) { |
switch (relative_addr) { |
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// version |
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case 0x00: |
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if (writeflag == MEM_READ) { |
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// version 1.x, so 2 -> 1.2 |
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odata = 2; |
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fatal("[ openpic: read version " |
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"offset 0x%x = 1.%d]\n", (int) |
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relative_addr, (int)odata); |
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} |
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fatal("[ openpic: unimplemented write to " |
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"offset 0x%x: data=0x%x (OpenPIC version) ]\n", (int) |
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relative_addr, (int)idata); |
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break; |
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// global timer frequency |
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case 0xf0: |
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if (writeflag == MEM_READ) { |
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odata = 170 * 1000000; // MHz |
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fatal("[ openpic: read global timer frequency " |
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"offset 0x%x = %x]\n", (int) |
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relative_addr, (int)odata); |
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} |
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fatal("[ openpic: unimplemented write to " |
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"offset 0x%x: data=0x%x ]\n", (int) |
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relative_addr, (int)idata); |
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break; |
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#if 0 |
#if 0 |
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#define INT_STATE_REG_H (interrupt_reg + 0x00) |
#define INT_STATE_REG_H (interrupt_reg + 0x00) |
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#define INT_ENABLE_REG_H (interrupt_reg + 0x04) |
#define INT_ENABLE_REG_H (interrupt_reg + 0x04) |
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#define INT_ENABLE_REG_L (interrupt_reg + 0x14) |
#define INT_ENABLE_REG_L (interrupt_reg + 0x14) |
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#define INT_CLEAR_REG_L (interrupt_reg + 0x18) |
#define INT_CLEAR_REG_L (interrupt_reg + 0x18) |
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#define INT_LEVEL_REG_L (interrupt_reg + 0x1c) |
#define INT_LEVEL_REG_L (interrupt_reg + 0x1c) |
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#endif |
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case 0x10: |
case 0x10: |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
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odata = d->enable_hi; |
odata = d->enable_hi; |
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else { |
else { |
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uint32_t old_enable_hi = d->enable_hi; |
int old_assert = (d->status_lo & d->enable_lo |
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|| d->status_hi & d->enable_hi); |
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int new_assert; |
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d->enable_hi = idata; |
d->enable_hi = idata; |
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if (d->enable_hi != old_enable_hi) |
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cpu_interrupt(cpu, d->reassert_irq); |
new_assert = (d->status_lo & d->enable_lo || |
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d->status_hi & d->enable_hi); |
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if (old_assert && !new_assert) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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else if (!old_assert && new_assert) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
} |
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break; |
break; |
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case 0x18: |
case 0x18: |
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if (writeflag == MEM_WRITE) { |
if (writeflag == MEM_WRITE) { |
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uint32_t old_status_hi = d->status_hi; |
int old_assert = (d->status_lo & d->enable_lo |
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|| d->status_hi & d->enable_hi); |
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int new_assert; |
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d->status_hi &= ~idata; |
d->status_hi &= ~idata; |
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if (d->status_hi != old_status_hi) |
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cpu_interrupt(cpu, d->reassert_irq); |
new_assert = (d->status_lo & d->enable_lo || |
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d->status_hi & d->enable_hi); |
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if (old_assert && !new_assert) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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else if (!old_assert && new_assert) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
} |
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break; |
break; |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
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odata = d->enable_lo; |
odata = d->enable_lo; |
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else { |
else { |
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uint32_t old_enable_lo = d->enable_lo; |
int old_assert = (d->status_lo & d->enable_lo |
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|| d->status_hi & d->enable_hi); |
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int new_assert; |
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d->enable_lo = idata; |
d->enable_lo = idata; |
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if (d->enable_lo != old_enable_lo) |
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cpu_interrupt(cpu, d->reassert_irq); |
new_assert = (d->status_lo & d->enable_lo || |
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d->status_hi & d->enable_hi); |
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if (old_assert && !new_assert) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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else if (!old_assert && new_assert) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
} |
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break; |
break; |
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case 0x28: |
case 0x28: |
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if (writeflag == MEM_WRITE) { |
if (writeflag == MEM_WRITE) { |
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uint32_t old_status_lo = d->status_lo; |
int old_assert = (d->status_lo & d->enable_lo |
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|| d->status_hi & d->enable_hi); |
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int new_assert; |
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d->status_lo &= ~idata; |
d->status_lo &= ~idata; |
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if (d->status_lo != old_status_lo) |
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cpu_interrupt(cpu, d->reassert_irq); |
new_assert = (d->status_lo & d->enable_lo || |
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d->status_hi & d->enable_hi); |
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if (old_assert && !new_assert) |
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INTERRUPT_DEASSERT(d->cpu_irq); |
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else if (!old_assert && new_assert) |
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INTERRUPT_ASSERT(d->cpu_irq); |
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} |
} |
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break; |
break; |
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case 0x1c: |
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case 0x2c: |
case 0x2c: |
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/* Avoir a debug message. */ |
/* Avoid a debug message. */ |
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break; |
break; |
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#endif |
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default:if (writeflag == MEM_WRITE) { |
default: |
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fatal("[ gc: unimplemented write to " |
if (writeflag == MEM_WRITE) { |
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"offset 0x%x: data=0x%x ]\n", (int) |
fatal("[ openpic: unimplemented write to " |
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relative_addr, (int)idata); |
"offset 0x%x idata = %x ]\n", |
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(int)relative_addr, (int)idata |
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); |
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} else { |
} else { |
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fatal("[ gc: unimplemented read from " |
fatal("[ openpic: unimplemented read from " |
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"offset 0x%x ]\n", (int)relative_addr); |
"offset 0x%x odata = %x ]\n", |
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(int)relative_addr, (int)odata |
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); |
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} |
} |
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} |
} |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) { |
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// shuffle byte order |
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odata = |
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( odata & 0x000000ff ) << 24 | |
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( odata & 0x0000ff00 ) << 8 | |
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( odata & 0x00ff0000 ) >> 8 | |
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( odata & 0xff000000 ) >> 24 ; |
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memory_writemax64(cpu, data, len, odata); |
memory_writemax64(cpu, data, len, odata); |
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debug("[ openpic: READ %05x | %08x ]\n", |
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(int)relative_addr, (int)odata |
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); |
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} |
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return 1; |
return 1; |
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} |
} |
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/* |
DEVINIT(openpic) |
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* dev_gc_init(): |
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*/ |
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struct gc_data *dev_gc_init(struct machine *machine, struct memory *mem, |
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uint64_t addr, int reassert_irq) |
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{ |
{ |
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struct gc_data *d; |
struct openpic_data *d; |
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int i; |
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CHECK_ALLOCATION(d = malloc(sizeof(struct openpic_data))); |
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memset(d, 0, sizeof(struct openpic_data)); |
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d = malloc(sizeof(struct gc_data)); |
/* Connect to the CPU interrupt pin: */ |
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if (d == NULL) { |
INTERRUPT_CONNECT(devinit->interrupt_path, d->cpu_irq); |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
/* |
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* Register the 126 OpenPIC interrupts |
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*/ |
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for (i=0; i<126; i++) { |
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struct interrupt template; |
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char n[300]; |
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snprintf(n, sizeof(n), "%s.openpic.%i", |
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devinit->interrupt_path, i); |
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memset(&template, 0, sizeof(template)); |
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template.line = 1 << i; |
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template.name = n; |
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template.extra = d; |
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template.interrupt_assert = openpic_lo_interrupt_assert; |
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template.interrupt_deassert = openpic_lo_interrupt_deassert; |
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interrupt_handler_register(&template); |
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// debug("[ openpic: added interrupt %s ]\n", n); |
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} |
} |
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memset(d, 0, sizeof(struct gc_data)); |
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d->reassert_irq = reassert_irq; |
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memory_device_register(mem, "gc", addr, 0x100, |
memory_device_register(devinit->machine->memory, "openpic", |
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dev_gc_access, d, DM_DEFAULT, NULL); |
devinit->addr, DEV_OPENPIC_LENGTH, dev_openpic_access, d, DM_DEFAULT, NULL); |
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return d; |
return 1; |
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} |
} |
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