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* $Id: dev_openpic.c,v 1.14 2007/09/11 21:42:52 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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* COMMENT: OpenPIC Interrupt controller (used by sandpoint ppc) |
* COMMENT: OpenPIC Interrupt controller (used by sandpoint ppc) |
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* based on dev_openpic.c |
* based on dev_gc.c |
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*/ |
*/ |
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#include <stdio.h> |
#include <stdio.h> |
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INTERRUPT_DEASSERT(d->cpu_irq); |
INTERRUPT_DEASSERT(d->cpu_irq); |
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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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DEVICE_ACCESS(openpic) |
DEVICE_ACCESS(openpic) |
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{ |
{ |
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struct openpic_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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uint64_t priority,vector, active; |
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priority = ( relative_addr & 0xf000 ); |
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vector = ( relative_addr & 0x00ff ); |
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active = ( relative_addr & 0x4000 ); |
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debug("[ openpic: access at %04x -> priority: %x vector: 0x%02x %d active: %x ]\n", |
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(int)relative_addr, (int)priority, (int)vector, (int)vector, (int)active ); |
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switch (relative_addr) { |
switch (relative_addr) { |
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case 0x00: |
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if (writeflag == MEM_READ) { |
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// version 1.2 |
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odata = 0x02000000; |
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fatal("[ openpic: read from " |
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"offset 0x%x (OpenPIC version) = %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 (OpenPIC version) ]\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_LEVEL_REG_L (interrupt_reg + 0x1c) |
#define INT_LEVEL_REG_L (interrupt_reg + 0x1c) |
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#endif |
#endif |
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#if 0 |
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case 0x10: |
case 0x10: |
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if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
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odata = d->status_hi & d->enable_hi; |
odata = d->status_hi & d->enable_hi; |
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case 0x2c: |
case 0x2c: |
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/* Avoid 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:if (writeflag == MEM_WRITE) { |
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fatal("[ openpic: unimplemented write to " |
fatal("[ openpic: unimplemented write to " |
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"offset 0x%x: data=0x%x ]\n", (int) |
"offset 0x%x: data=0x%x ]\n", (int) |
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INTERRUPT_CONNECT(devinit->interrupt_path, d->cpu_irq); |
INTERRUPT_CONNECT(devinit->interrupt_path, d->cpu_irq); |
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/* |
/* |
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* Register the 64 Grand Central interrupts (32 lo, 32 hi): |
* Register the 126 OpenPIC interrupts |
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*/ |
*/ |
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for (i=0; i<32; i++) { |
for (i=0; i<126; i++) { |
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struct interrupt template; |
struct interrupt template; |
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char n[300]; |
char n[300]; |
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snprintf(n, sizeof(n), "%s.openpic.lo.%i", |
snprintf(n, sizeof(n), "%s.openpic.%i", |
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devinit->interrupt_path, i); |
devinit->interrupt_path, i); |
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memset(&template, 0, sizeof(template)); |
memset(&template, 0, sizeof(template)); |
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template.line = 1 << i; |
template.line = 1 << i; |
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template.interrupt_assert = openpic_lo_interrupt_assert; |
template.interrupt_assert = openpic_lo_interrupt_assert; |
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template.interrupt_deassert = openpic_lo_interrupt_deassert; |
template.interrupt_deassert = openpic_lo_interrupt_deassert; |
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interrupt_handler_register(&template); |
interrupt_handler_register(&template); |
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snprintf(n, sizeof(n), "%s.openpic.hi.%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_hi_interrupt_assert; |
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template.interrupt_deassert = openpic_hi_interrupt_deassert; |
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interrupt_handler_register(&template); |
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} |
} |
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memory_device_register(devinit->machine->memory, "openpic", |
memory_device_register(devinit->machine->memory, "openpic", |