ca87d03b77
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4058 c046a42c-6fe2-441c-8c8c-71466251a162
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/*
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* QEMU ETRAX System Emulator
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*
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* Copyright (c) 2007 Edgar E. Iglesias, Axis Communications AB.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include "hw.h"
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#define D(x)
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#define RW_TR_DMA_EN 0x04
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#define RW_DOUT 0x1c
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#define RW_STAT_DIN 0x20
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#define R_STAT_DIN 0x24
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static uint32_t ser_readb (void *opaque, target_phys_addr_t addr)
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{
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D(CPUState *env = opaque);
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D(printf ("%s %x pc=%x\n", __func__, addr, env->pc));
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return 0;
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}
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static uint32_t ser_readw (void *opaque, target_phys_addr_t addr)
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{
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D(CPUState *env = opaque);
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D(printf ("%s %x pc=%x\n", __func__, addr, env->pc));
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return 0;
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}
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static uint32_t ser_readl (void *opaque, target_phys_addr_t addr)
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{
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D(CPUState *env = opaque);
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uint32_t r = 0;
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switch (addr & 0xfff)
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{
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case RW_TR_DMA_EN:
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break;
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case R_STAT_DIN:
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r |= 1 << 24; /* set tr_rdy. */
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r |= 1 << 22; /* set tr_idle. */
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break;
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default:
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D(printf ("%s %x p=%x\n", __func__, addr, env->pc));
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break;
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}
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return r;
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}
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static void
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ser_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
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{
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D(CPUState *env = opaque);
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D(printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc));
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}
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static void
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ser_writew (void *opaque, target_phys_addr_t addr, uint32_t value)
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{
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D(CPUState *env = opaque);
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D(printf ("%s %x %x pc=%x\n", __func__, addr, value, env->pc));
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}
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static void
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ser_writel (void *opaque, target_phys_addr_t addr, uint32_t value)
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{
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D(CPUState *env = opaque);
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switch (addr & 0xfff)
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{
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case RW_TR_DMA_EN:
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break;
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case RW_DOUT:
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if (isprint(value) || isspace(value))
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putchar(value);
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else
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putchar('.');
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fflush(stdout);
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break;
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default:
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D(printf ("%s %x %x pc=%x\n",
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__func__, addr, value, env->pc));
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break;
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}
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}
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static CPUReadMemoryFunc *ser_read[] = {
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&ser_readb,
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&ser_readw,
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&ser_readl,
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};
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static CPUWriteMemoryFunc *ser_write[] = {
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&ser_writeb,
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&ser_writew,
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&ser_writel,
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};
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void etraxfs_ser_init(CPUState *env, qemu_irq *irqs, target_phys_addr_t base)
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{
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int ser_regs;
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ser_regs = cpu_register_io_memory(0, ser_read, ser_write, env);
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cpu_register_physical_memory (base, 0x3c, ser_regs);
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}
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