| 1 |
/* |
| 2 |
* Copyright (C) 2004-2005 Anders Gavare. All rights reserved. |
| 3 |
* |
| 4 |
* Redistribution and use in source and binary forms, with or without |
| 5 |
* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
| 8 |
* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer in the |
| 11 |
* documentation and/or other materials provided with the distribution. |
| 12 |
* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
| 15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: dev_jazz.c,v 1.18 2005/04/04 21:50:04 debug Exp $ |
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* |
| 30 |
* Microsoft Jazz-related stuff (Acer PICA-61, etc). |
| 31 |
*/ |
| 32 |
|
| 33 |
#include <stdio.h> |
| 34 |
#include <stdlib.h> |
| 35 |
#include <string.h> |
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|
| 37 |
#include "cpu.h" |
| 38 |
#include "device.h" |
| 39 |
#include "devices.h" |
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#include "machine.h" |
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#include "memory.h" |
| 42 |
#include "misc.h" |
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|
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#include "jazz_r4030_dma.h" |
| 45 |
#include "pica.h" |
| 46 |
|
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|
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#define DEV_JAZZ_TICKSHIFT 14 |
| 49 |
|
| 50 |
#define PICA_TIMER_IRQ 15 |
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|
| 52 |
|
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/* |
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* dev_jazz_dma_controller(): |
| 55 |
*/ |
| 56 |
size_t dev_jazz_dma_controller(void *dma_controller_data, |
| 57 |
unsigned char *data, size_t len, int writeflag) |
| 58 |
{ |
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struct jazz_data *d = (struct jazz_data *) dma_controller_data; |
| 60 |
struct cpu *cpu = d->cpu; |
| 61 |
int i, enab_writeflag; |
| 62 |
int res, ncpy; |
| 63 |
uint32_t dma_addr; |
| 64 |
unsigned char tr[sizeof(uint32_t)]; |
| 65 |
uint32_t phys_addr; |
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|
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#if 0 |
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fatal("[ dev_jazz_dma_controller(): writeflag=%i, len=%i, data =", |
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writeflag, (int)len); |
| 70 |
for (i=0; i<len; i++) |
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fatal(" %02x", data[i]); |
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fatal(" mode=%08x enable=%08x count=%08x addr=%08x", |
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d->dma0_mode, d->dma0_enable, d->dma0_count, d->dma0_addr); |
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fatal(" table=%08x", |
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d->dma_translation_table_base); |
| 76 |
fatal(" ]\n"); |
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#endif |
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|
| 79 |
if (!(d->dma0_enable & R4030_DMA_ENAB_RUN)) { |
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fatal("[ dev_jazz_dma_controller(): dma not enabled? ]\n"); |
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/* return 0; */ |
| 82 |
} |
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|
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/* R4030 "write" means write to the device, writeflag as the |
| 85 |
argument to this function means write to memory. */ |
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enab_writeflag = (d->dma0_enable & R4030_DMA_ENAB_WRITE)? 0 : 1; |
| 87 |
if (enab_writeflag != writeflag) { |
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fatal("[ dev_jazz_dma_controller(): wrong direction? ]\n"); |
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return 0; |
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} |
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|
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dma_addr = d->dma0_addr; |
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i = 0; |
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while (dma_addr < d->dma0_addr + d->dma0_count && i < len) { |
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|
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res = cpu->memory_rw(cpu, cpu->mem, |
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d->dma_translation_table_base + (dma_addr >> 12) * 8, |
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tr, sizeof(tr), 0, PHYSICAL | NO_EXCEPTIONS); |
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|
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if (cpu->byte_order==EMUL_BIG_ENDIAN) |
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phys_addr = (tr[0] << 24) + (tr[1] << 16) + |
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(tr[2] << 8) + tr[3]; |
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else |
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phys_addr = (tr[3] << 24) + (tr[2] << 16) + |
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(tr[1] << 8) + tr[0]; |
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phys_addr &= ~0xfff; /* just in case */ |
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phys_addr += (dma_addr & 0xfff); |
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|
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/* fatal(" !!! dma_addr = %08x, phys_addr = %08x\n", |
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(int)dma_addr, (int)phys_addr); */ |
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|
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/* Speed up the copying by copying 16 or 256 bytes: */ |
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ncpy = 1; |
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if ((phys_addr & 15) == 0 && i + 15 <= len) |
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ncpy = 15; |
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if ((phys_addr & 255) == 0 && i + 255 <= len) |
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ncpy = 255; |
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|
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res = cpu->memory_rw(cpu, cpu->mem, phys_addr, |
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&data[i], ncpy, writeflag, PHYSICAL | NO_EXCEPTIONS); |
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|
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dma_addr += ncpy; |
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i += ncpy; |
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} |
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|
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/* TODO: Is this correct? */ |
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d->dma0_count = 0; |
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|
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return len; |
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} |
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|
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|
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/* |
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* dev_jazz_tick(): |
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*/ |
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void dev_jazz_tick(struct cpu *cpu, void *extra) |
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{ |
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struct jazz_data *d = extra; |
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|
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/* Used by NetBSD/arc and OpenBSD/arc: */ |
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if (d->interval_start > 0 && d->interval > 0 |
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&& (d->int_enable_mask & 2) /* Hm? */ ) { |
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d->interval -= 2; |
| 144 |
if (d->interval <= 0) { |
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debug("[ jazz: interval timer interrupt ]\n"); |
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cpu_interrupt(cpu, 8 + PICA_TIMER_IRQ); |
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} |
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} |
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|
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/* Linux? */ |
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if (d->jazz_timer_value != 0) { |
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d->jazz_timer_current -= 5; |
| 153 |
if (d->jazz_timer_current < 1) { |
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d->jazz_timer_current = d->jazz_timer_value; |
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cpu_interrupt(cpu, 6); |
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} |
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} |
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} |
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|
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|
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/* |
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* dev_jazz_access(): |
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*/ |
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int dev_jazz_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, |
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int writeflag, void *extra) |
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{ |
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struct jazz_data *d = (struct jazz_data *) extra; |
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uint64_t idata = 0, odata = 0; |
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int regnr; |
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|
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idata = memory_readmax64(cpu, data, len); |
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regnr = relative_addr / sizeof(uint32_t); |
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|
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switch (relative_addr) { |
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case R4030_SYS_CONFIG: |
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if (writeflag == MEM_WRITE) { |
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fatal("[ jazz: unimplemented write to R4030_SYS_CONFIG" |
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", data=0x%08x ]\n", (int)idata); |
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} else { |
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/* Reading the config register should give |
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0x0104 or 0x0410. Why? TODO */ |
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odata = 0x104; |
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} |
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break; |
| 186 |
case R4030_SYS_TL_BASE: |
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if (writeflag == MEM_WRITE) { |
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d->dma_translation_table_base = idata; |
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} else { |
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odata = d->dma_translation_table_base; |
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} |
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break; |
| 193 |
case R4030_SYS_TL_LIMIT: |
| 194 |
if (writeflag == MEM_WRITE) { |
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d->dma_translation_table_limit = idata; |
| 196 |
} else { |
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odata = d->dma_translation_table_limit; |
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} |
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break; |
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case R4030_SYS_TL_IVALID: |
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/* TODO: Does invalidation actually need to be implemented? */ |
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break; |
| 203 |
case R4030_SYS_DMA0_REGS: |
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if (writeflag == MEM_WRITE) { |
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d->dma0_mode = idata; |
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} else { |
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odata = d->dma0_mode; |
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} |
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break; |
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case R4030_SYS_DMA0_REGS + 0x8: |
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if (writeflag == MEM_WRITE) { |
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d->dma0_enable = idata; |
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} else { |
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odata = d->dma0_enable; |
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} |
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break; |
| 217 |
case R4030_SYS_DMA0_REGS + 0x10: |
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if (writeflag == MEM_WRITE) { |
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d->dma0_count = idata; |
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} else { |
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odata = d->dma0_count; |
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} |
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break; |
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case R4030_SYS_DMA0_REGS + 0x18: |
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if (writeflag == MEM_WRITE) { |
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d->dma0_addr = idata; |
| 227 |
} else { |
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odata = d->dma0_addr; |
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} |
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break; |
| 231 |
case R4030_SYS_DMA1_REGS: |
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if (writeflag == MEM_WRITE) { |
| 233 |
d->dma1_mode = idata; |
| 234 |
} else { |
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odata = d->dma1_mode; |
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} |
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break; |
| 238 |
case R4030_SYS_ISA_VECTOR: |
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/* ? */ |
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printf("R4030_SYS_ISA_VECTOR: w=%i\n", writeflag); |
| 241 |
{ |
| 242 |
uint32_t x = d->isa_int_asserted |
| 243 |
& d->isa_int_enable_mask; |
| 244 |
odata = 0; |
| 245 |
while (odata < 16) { |
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if (x & (1 << odata)) |
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break; |
| 248 |
odata ++; |
| 249 |
} |
| 250 |
if (odata >= 16) |
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odata = 0; |
| 252 |
} |
| 253 |
break; |
| 254 |
case R4030_SYS_IT_VALUE: /* Interval timer reload value */ |
| 255 |
if (writeflag == MEM_WRITE) { |
| 256 |
d->interval_start = idata; |
| 257 |
d->interval = d->interval_start; |
| 258 |
} else |
| 259 |
odata = d->interval_start; |
| 260 |
break; |
| 261 |
case R4030_SYS_IT_STAT: |
| 262 |
/* Accessing this word seems to acknowledge interrupts? */ |
| 263 |
cpu_interrupt_ack(cpu, 8 + PICA_TIMER_IRQ); |
| 264 |
if (writeflag == MEM_WRITE) |
| 265 |
d->interval = idata; |
| 266 |
else |
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odata = d->interval; |
| 268 |
d->interval = d->interval_start; |
| 269 |
break; |
| 270 |
case R4030_SYS_EXT_IMASK: |
| 271 |
if (writeflag == MEM_WRITE) { |
| 272 |
d->int_enable_mask = idata; |
| 273 |
/* Do a "nonsense" interrupt recalibration: */ |
| 274 |
cpu_interrupt_ack(cpu, 8); |
| 275 |
} else |
| 276 |
odata = d->int_enable_mask; |
| 277 |
break; |
| 278 |
default: |
| 279 |
if (writeflag == MEM_WRITE) { |
| 280 |
fatal("[ jazz: unimplemented write to address 0x%x" |
| 281 |
", data=0x%02x ]\n", (int)relative_addr, |
| 282 |
(int)idata); |
| 283 |
} else { |
| 284 |
fatal("[ jazz: unimplemented read from address 0x%x" |
| 285 |
" ]\n", (int)relative_addr); |
| 286 |
} |
| 287 |
} |
| 288 |
|
| 289 |
if (writeflag == MEM_READ) |
| 290 |
memory_writemax64(cpu, data, len, odata); |
| 291 |
|
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return 1; |
| 293 |
} |
| 294 |
|
| 295 |
|
| 296 |
/* |
| 297 |
* dev_jazz_led_access(): |
| 298 |
*/ |
| 299 |
int dev_jazz_led_access(struct cpu *cpu, struct memory *mem, |
| 300 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 301 |
int writeflag, void *extra) |
| 302 |
{ |
| 303 |
struct jazz_data *d = (struct jazz_data *) extra; |
| 304 |
uint64_t idata = 0, odata = 0; |
| 305 |
int regnr; |
| 306 |
|
| 307 |
idata = memory_readmax64(cpu, data, len); |
| 308 |
regnr = relative_addr / sizeof(uint32_t); |
| 309 |
|
| 310 |
switch (relative_addr) { |
| 311 |
case 0: |
| 312 |
if (writeflag == MEM_WRITE) { |
| 313 |
d->led = idata; |
| 314 |
debug("[ jazz_led: write to LED: 0x%02x ]\n", |
| 315 |
(int)idata); |
| 316 |
} else { |
| 317 |
odata = d->led; |
| 318 |
} |
| 319 |
break; |
| 320 |
default: |
| 321 |
if (writeflag == MEM_WRITE) { |
| 322 |
fatal("[ jazz_led: unimplemented write to address 0x%x" |
| 323 |
", data=0x%02x ]\n", (int)relative_addr, |
| 324 |
(int)idata); |
| 325 |
} else { |
| 326 |
fatal("[ jazz_led: unimplemented read from address 0x%x" |
| 327 |
" ]\n", (int)relative_addr); |
| 328 |
} |
| 329 |
} |
| 330 |
|
| 331 |
if (writeflag == MEM_READ) |
| 332 |
memory_writemax64(cpu, data, len, odata); |
| 333 |
|
| 334 |
return 1; |
| 335 |
} |
| 336 |
|
| 337 |
|
| 338 |
/* |
| 339 |
* dev_jazz_access_a0(): |
| 340 |
* |
| 341 |
* ISA interrupt stuff, high 8 interrupts. |
| 342 |
*/ |
| 343 |
int dev_jazz_access_a0(struct cpu *cpu, struct memory *mem, |
| 344 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 345 |
int writeflag, void *extra) |
| 346 |
{ |
| 347 |
struct jazz_data *d = (struct jazz_data *) extra; |
| 348 |
uint64_t idata = 0, odata = 0; |
| 349 |
|
| 350 |
idata = memory_readmax64(cpu, data, len); |
| 351 |
odata = 0; |
| 352 |
|
| 353 |
switch (relative_addr) { |
| 354 |
case 0: |
| 355 |
if (writeflag == MEM_WRITE) { |
| 356 |
/* TODO: only if idata == 0x20? */ |
| 357 |
d->isa_int_asserted &= 0xff; |
| 358 |
cpu_interrupt_ack(cpu, 8 + 0); |
| 359 |
} |
| 360 |
break; |
| 361 |
case 1: |
| 362 |
if (writeflag == MEM_WRITE) { |
| 363 |
idata = ((idata ^ 0xff) & 0xff) << 8; |
| 364 |
d->isa_int_enable_mask = |
| 365 |
(d->isa_int_enable_mask & 0xff) | idata; |
| 366 |
debug("[ jazz_isa_a0: setting isa_int_enable_mask " |
| 367 |
"to 0x%04x ]\n", (int)d->isa_int_enable_mask); |
| 368 |
/* Recompute interrupt stuff: */ |
| 369 |
cpu_interrupt_ack(cpu, 8 + 0); |
| 370 |
} else |
| 371 |
odata = d->isa_int_enable_mask; |
| 372 |
break; |
| 373 |
default: |
| 374 |
if (writeflag == MEM_WRITE) { |
| 375 |
fatal("[ jazz_isa_a0: unimplemented write to " |
| 376 |
"address 0x%x, data=0x%02x ]\n", |
| 377 |
(int)relative_addr, (int)idata); |
| 378 |
} else { |
| 379 |
fatal("[ jazz_isa_a0: unimplemented read from " |
| 380 |
"address 0x%x ]\n", (int)relative_addr); |
| 381 |
} |
| 382 |
} |
| 383 |
|
| 384 |
if (writeflag == MEM_READ) |
| 385 |
memory_writemax64(cpu, data, len, odata); |
| 386 |
|
| 387 |
return 1; |
| 388 |
} |
| 389 |
|
| 390 |
|
| 391 |
/* |
| 392 |
* dev_jazz_access_20(): |
| 393 |
* |
| 394 |
* ISA interrupt stuff, low 8 interrupts. |
| 395 |
*/ |
| 396 |
int dev_jazz_access_20(struct cpu *cpu, struct memory *mem, |
| 397 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 398 |
int writeflag, void *extra) |
| 399 |
{ |
| 400 |
struct jazz_data *d = (struct jazz_data *) extra; |
| 401 |
uint64_t idata = 0, odata = 0; |
| 402 |
|
| 403 |
idata = memory_readmax64(cpu, data, len); |
| 404 |
odata = 0; |
| 405 |
|
| 406 |
switch (relative_addr) { |
| 407 |
case 0: |
| 408 |
if (writeflag == MEM_WRITE) { |
| 409 |
/* TODO: only if idata == 0x20? */ |
| 410 |
d->isa_int_asserted &= 0xff00; |
| 411 |
cpu_interrupt_ack(cpu, 8 + 0); |
| 412 |
} |
| 413 |
break; |
| 414 |
case 1: |
| 415 |
if (writeflag == MEM_WRITE) { |
| 416 |
idata = (idata ^ 0xff) & 0xff; |
| 417 |
d->isa_int_enable_mask = |
| 418 |
(d->isa_int_enable_mask & 0xff00) | idata; |
| 419 |
debug("[ jazz_isa_20: setting isa_int_enable_mask " |
| 420 |
"to 0x%04x ]\n", (int)d->isa_int_enable_mask); |
| 421 |
/* Recompute interrupt stuff: */ |
| 422 |
cpu_interrupt_ack(cpu, 8 + 0); |
| 423 |
} else |
| 424 |
odata = d->isa_int_enable_mask; |
| 425 |
break; |
| 426 |
default: |
| 427 |
if (writeflag == MEM_WRITE) { |
| 428 |
fatal("[ jazz_isa_20: unimplemented write to " |
| 429 |
"address 0x%x, data=0x%02x ]\n", |
| 430 |
(int)relative_addr, (int)idata); |
| 431 |
} else { |
| 432 |
fatal("[ jazz_isa_20: unimplemented read from " |
| 433 |
"address 0x%x ]\n", (int)relative_addr); |
| 434 |
} |
| 435 |
} |
| 436 |
|
| 437 |
if (writeflag == MEM_READ) |
| 438 |
memory_writemax64(cpu, data, len, odata); |
| 439 |
|
| 440 |
return 1; |
| 441 |
} |
| 442 |
|
| 443 |
|
| 444 |
/* |
| 445 |
* dev_jazz_access_jazzio(): |
| 446 |
* |
| 447 |
* See jazzio_intr() in NetBSD's |
| 448 |
* /usr/src/sys/arch/arc/jazz/jazzio.c for more info. |
| 449 |
*/ |
| 450 |
int dev_jazz_access_jazzio(struct cpu *cpu, struct memory *mem, |
| 451 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 452 |
int writeflag, void *extra) |
| 453 |
{ |
| 454 |
struct jazz_data *d = (struct jazz_data *) extra; |
| 455 |
uint64_t idata = 0, odata = 0; |
| 456 |
int i, v; |
| 457 |
|
| 458 |
idata = memory_readmax64(cpu, data, len); |
| 459 |
|
| 460 |
switch (relative_addr) { |
| 461 |
case 0: |
| 462 |
v = 0; |
| 463 |
for (i=0; i<15; i++) { |
| 464 |
if (d->int_asserted & (1<<i)) { |
| 465 |
v = i+1; |
| 466 |
break; |
| 467 |
} |
| 468 |
} |
| 469 |
odata = v << 2; |
| 470 |
break; |
| 471 |
case 2: |
| 472 |
/* TODO: Should this be here?! */ |
| 473 |
|
| 474 |
if (writeflag == MEM_WRITE) |
| 475 |
d->jazz_timer_value = idata; |
| 476 |
else |
| 477 |
odata = d->jazz_timer_value; |
| 478 |
break; |
| 479 |
default: |
| 480 |
if (writeflag == MEM_WRITE) { |
| 481 |
fatal("[ jazzio: unimplemented write to address 0x%x" |
| 482 |
", data=0x%02x ]\n", (int)relative_addr, |
| 483 |
(int)idata); |
| 484 |
} else { |
| 485 |
fatal("[ jazzio: unimplemented read from address 0x%x" |
| 486 |
" ]\n", (int)relative_addr); |
| 487 |
} |
| 488 |
} |
| 489 |
|
| 490 |
/* This is needed by Windows NT during startup: */ |
| 491 |
cpu_interrupt_ack(cpu, 3); |
| 492 |
|
| 493 |
if (writeflag == MEM_READ) |
| 494 |
memory_writemax64(cpu, data, len, odata); |
| 495 |
|
| 496 |
return 1; |
| 497 |
} |
| 498 |
|
| 499 |
|
| 500 |
/* |
| 501 |
* devinit_jazz(): |
| 502 |
*/ |
| 503 |
int devinit_jazz(struct devinit *devinit) |
| 504 |
{ |
| 505 |
struct jazz_data *d = malloc(sizeof(struct jazz_data)); |
| 506 |
if (d == NULL) { |
| 507 |
fprintf(stderr, "out of memory\n"); |
| 508 |
exit(1); |
| 509 |
} |
| 510 |
memset(d, 0, sizeof(struct jazz_data)); |
| 511 |
|
| 512 |
d->cpu = devinit->machine->cpus[0]; /* TODO */ |
| 513 |
|
| 514 |
d->isa_int_enable_mask = 0xffff; |
| 515 |
|
| 516 |
memory_device_register(devinit->machine->memory, "jazz", |
| 517 |
devinit->addr, DEV_JAZZ_LENGTH, |
| 518 |
dev_jazz_access, (void *)d, MEM_DEFAULT, NULL); |
| 519 |
|
| 520 |
/* At least for Magnum and Pica-61: */ |
| 521 |
memory_device_register(devinit->machine->memory, "jazz_led", |
| 522 |
0x08000f000ULL, 4, dev_jazz_led_access, (void *)d, |
| 523 |
MEM_DEFAULT, NULL); |
| 524 |
|
| 525 |
memory_device_register(devinit->machine->memory, "jazz_isa_20", |
| 526 |
0x90000020ULL, 2, dev_jazz_access_20, (void *)d, MEM_DEFAULT, NULL); |
| 527 |
|
| 528 |
memory_device_register(devinit->machine->memory, "jazz_isa_a0", |
| 529 |
0x900000a0ULL, 2, dev_jazz_access_a0, (void *)d, MEM_DEFAULT, NULL); |
| 530 |
|
| 531 |
memory_device_register(devinit->machine->memory, "pica_jazzio", |
| 532 |
0xf0000000ULL, 4, dev_jazz_access_jazzio, (void *)d, |
| 533 |
MEM_DEFAULT, NULL); |
| 534 |
|
| 535 |
machine_add_tickfunction(devinit->machine, dev_jazz_tick, |
| 536 |
d, DEV_JAZZ_TICKSHIFT); |
| 537 |
|
| 538 |
devinit->return_ptr = d; |
| 539 |
|
| 540 |
return 1; |
| 541 |
} |
| 542 |
|
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