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/* |
/* |
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* Copyright (C) 2003-2006 Anders Gavare. All rights reserved. |
* Copyright (C) 2003-2007 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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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: dev_kn230.c,v 1.15 2006/02/09 20:02:59 debug Exp $ |
* $Id: dev_kn230.c,v 1.18 2007/02/03 20:14:23 debug Exp $ |
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* |
* |
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* DEC MIPSMATE 5100 (KN230) stuff. |
* DEC MIPSMATE 5100 (KN230) stuff. |
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*/ |
*/ |
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#include <string.h> |
#include <string.h> |
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#include "device.h" |
#include "device.h" |
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#include "devices.h" |
#include "interrupt.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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#include "dec_5100.h" |
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#define DEV_KN230_LENGTH 0x1c00000 |
#define DEV_KN230_LENGTH 0x1c00000 |
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struct kn230_data { |
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struct interrupt mips_irq_2; |
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struct interrupt mips_irq_3; |
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/* |
uint32_t csr; |
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* dev_kn230_access(): |
}; |
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/* |
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* kn230_interrupt_assert(): |
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* kn230_interrupt_deassert(): |
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* |
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* Called whenever a KN230 interrupt is asserted/deasserted. |
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*/ |
*/ |
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void kn230_interrupt_assert(struct interrupt *interrupt) |
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{ |
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struct kn230_data *d = interrupt->extra; |
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int assert2 = 0, assert3 = 0; |
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d->csr |= interrupt->line; |
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if (d->csr & (KN230_CSR_INTR_SII | KN230_CSR_INTR_LANCE)) |
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assert3 = 1; |
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if (d->csr & (KN230_CSR_INTR_DZ0 | |
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KN230_CSR_INTR_OPT0 | KN230_CSR_INTR_OPT1)) |
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assert2 = 1; |
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if (assert2) |
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INTERRUPT_ASSERT(d->mips_irq_2); |
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if (assert3) |
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INTERRUPT_ASSERT(d->mips_irq_2); |
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} |
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void kn230_interrupt_deassert(struct interrupt *interrupt) |
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{ |
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struct kn230_data *d = interrupt->extra; |
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int assert2 = 0, assert3 = 0; |
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d->csr &= ~interrupt->line; |
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if (d->csr & (KN230_CSR_INTR_SII | KN230_CSR_INTR_LANCE)) |
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assert3 = 1; |
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if (d->csr & (KN230_CSR_INTR_DZ0 | |
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KN230_CSR_INTR_OPT0 | KN230_CSR_INTR_OPT1)) |
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assert2 = 1; |
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if (!assert2) |
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INTERRUPT_DEASSERT(d->mips_irq_2); |
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if (!assert3) |
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INTERRUPT_DEASSERT(d->mips_irq_2); |
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} |
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DEVICE_ACCESS(kn230) |
DEVICE_ACCESS(kn230) |
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{ |
{ |
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struct kn230_csr *d = extra; |
struct kn230_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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DEVINIT(kn230) |
DEVINIT(kn230) |
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{ |
{ |
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struct kn230_csr *d; |
struct kn230_data *d; |
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char tmpstr[300]; |
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int i; |
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d = malloc(sizeof(struct kn230_csr)); |
d = malloc(sizeof(struct kn230_data)); |
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if (d == NULL) { |
if (d == NULL) { |
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fprintf(stderr, "out of memory\n"); |
fprintf(stderr, "out of memory\n"); |
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exit(1); |
exit(1); |
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} |
} |
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memset(d, 0, sizeof(struct kn230_csr)); |
memset(d, 0, sizeof(struct kn230_data)); |
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/* |
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* devinit->interrupt_path points to the MIPS cpu itself. |
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* The KN230 interrupt controller interrupts at MIPS interrupts |
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* 2 and 3, depending on which KN230 is asserted. |
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*/ |
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snprintf(tmpstr, sizeof(tmpstr), "%s.2", devinit->interrupt_path); |
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INTERRUPT_CONNECT(tmpstr, d->mips_irq_2); |
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snprintf(tmpstr, sizeof(tmpstr), "%s.3", devinit->interrupt_path); |
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INTERRUPT_CONNECT(tmpstr, d->mips_irq_3); |
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/* Register KN230 interrupts 8..15: */ |
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for (i=8; i<=15; i++) { |
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struct interrupt template; |
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char tmpstr[300]; |
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snprintf(tmpstr, sizeof(tmpstr), "%s.kn230.0x%x", |
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devinit->interrupt_path, 1 << i); |
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memset(&template, 0, sizeof(template)); |
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template.line = 1 << i; |
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template.name = tmpstr; |
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template.extra = d; |
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template.interrupt_assert = kn230_interrupt_assert; |
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template.interrupt_deassert = kn230_interrupt_deassert; |
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interrupt_handler_register(&template); |
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} |
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memory_device_register(devinit->machine->memory, devinit->name, |
memory_device_register(devinit->machine->memory, devinit->name, |
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devinit->addr, DEV_KN230_LENGTH, dev_kn230_access, d, |
devinit->addr, DEV_KN230_LENGTH, dev_kn230_access, d, |