513 lines
13 KiB
C
513 lines
13 KiB
C
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/*
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* QEMU Sparc SLAVIO aux io port emulation
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*
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* Copyright (c) 2005 Fabrice Bellard
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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 "qemu/osdep.h"
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#include "hw/irq.h"
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#include "hw/sysbus.h"
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#include "migration/vmstate.h"
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#include "qemu/module.h"
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#include "sysemu/runstate.h"
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#include "trace.h"
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/*
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* This is the auxio port, chip control and system control part of
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* chip STP2001 (Slave I/O), also produced as NCR89C105. See
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* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
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*
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* This also includes the PMC CPU idle controller.
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*/
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#define TYPE_SLAVIO_MISC "slavio_misc"
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#define SLAVIO_MISC(obj) OBJECT_CHECK(MiscState, (obj), TYPE_SLAVIO_MISC)
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typedef struct MiscState {
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SysBusDevice parent_obj;
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MemoryRegion cfg_iomem;
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MemoryRegion diag_iomem;
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MemoryRegion mdm_iomem;
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MemoryRegion led_iomem;
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MemoryRegion sysctrl_iomem;
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MemoryRegion aux1_iomem;
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MemoryRegion aux2_iomem;
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qemu_irq irq;
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qemu_irq fdc_tc;
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uint32_t dummy;
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uint8_t config;
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uint8_t aux1, aux2;
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uint8_t diag, mctrl;
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uint8_t sysctrl;
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uint16_t leds;
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} MiscState;
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#define TYPE_APC "apc"
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#define APC(obj) OBJECT_CHECK(APCState, (obj), TYPE_APC)
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typedef struct APCState {
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SysBusDevice parent_obj;
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MemoryRegion iomem;
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qemu_irq cpu_halt;
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} APCState;
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#define MISC_SIZE 1
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#define LED_SIZE 2
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#define SYSCTRL_SIZE 4
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#define AUX1_TC 0x02
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#define AUX2_PWROFF 0x01
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#define AUX2_PWRINTCLR 0x02
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#define AUX2_PWRFAIL 0x20
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#define CFG_PWRINTEN 0x08
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#define SYS_RESET 0x01
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#define SYS_RESETSTAT 0x02
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static void slavio_misc_update_irq(void *opaque)
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{
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MiscState *s = opaque;
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if ((s->aux2 & AUX2_PWRFAIL) && (s->config & CFG_PWRINTEN)) {
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trace_slavio_misc_update_irq_raise();
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qemu_irq_raise(s->irq);
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} else {
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trace_slavio_misc_update_irq_lower();
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qemu_irq_lower(s->irq);
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}
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}
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static void slavio_misc_reset(DeviceState *d)
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{
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MiscState *s = SLAVIO_MISC(d);
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// Diagnostic and system control registers not cleared in reset
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s->config = s->aux1 = s->aux2 = s->mctrl = 0;
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}
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static void slavio_set_power_fail(void *opaque, int irq, int power_failing)
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{
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MiscState *s = opaque;
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trace_slavio_set_power_fail(power_failing, s->config);
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if (power_failing && (s->config & CFG_PWRINTEN)) {
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s->aux2 |= AUX2_PWRFAIL;
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} else {
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s->aux2 &= ~AUX2_PWRFAIL;
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}
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slavio_misc_update_irq(s);
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}
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static void slavio_cfg_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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trace_slavio_cfg_mem_writeb(val & 0xff);
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s->config = val & 0xff;
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slavio_misc_update_irq(s);
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}
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static uint64_t slavio_cfg_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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ret = s->config;
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trace_slavio_cfg_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps slavio_cfg_mem_ops = {
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.read = slavio_cfg_mem_readb,
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.write = slavio_cfg_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static void slavio_diag_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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trace_slavio_diag_mem_writeb(val & 0xff);
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s->diag = val & 0xff;
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}
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static uint64_t slavio_diag_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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ret = s->diag;
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trace_slavio_diag_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps slavio_diag_mem_ops = {
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.read = slavio_diag_mem_readb,
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.write = slavio_diag_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static void slavio_mdm_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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trace_slavio_mdm_mem_writeb(val & 0xff);
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s->mctrl = val & 0xff;
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}
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static uint64_t slavio_mdm_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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ret = s->mctrl;
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trace_slavio_mdm_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps slavio_mdm_mem_ops = {
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.read = slavio_mdm_mem_readb,
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.write = slavio_mdm_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static void slavio_aux1_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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trace_slavio_aux1_mem_writeb(val & 0xff);
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if (val & AUX1_TC) {
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// Send a pulse to floppy terminal count line
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if (s->fdc_tc) {
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qemu_irq_raise(s->fdc_tc);
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qemu_irq_lower(s->fdc_tc);
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}
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val &= ~AUX1_TC;
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}
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s->aux1 = val & 0xff;
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}
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static uint64_t slavio_aux1_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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ret = s->aux1;
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trace_slavio_aux1_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps slavio_aux1_mem_ops = {
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.read = slavio_aux1_mem_readb,
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.write = slavio_aux1_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static void slavio_aux2_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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val &= AUX2_PWRINTCLR | AUX2_PWROFF;
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trace_slavio_aux2_mem_writeb(val & 0xff);
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val |= s->aux2 & AUX2_PWRFAIL;
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if (val & AUX2_PWRINTCLR) // Clear Power Fail int
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val &= AUX2_PWROFF;
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s->aux2 = val;
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if (val & AUX2_PWROFF)
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qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
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slavio_misc_update_irq(s);
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}
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static uint64_t slavio_aux2_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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ret = s->aux2;
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trace_slavio_aux2_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps slavio_aux2_mem_ops = {
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.read = slavio_aux2_mem_readb,
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.write = slavio_aux2_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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},
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};
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static void apc_mem_writeb(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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APCState *s = opaque;
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trace_apc_mem_writeb(val & 0xff);
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qemu_irq_raise(s->cpu_halt);
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}
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static uint64_t apc_mem_readb(void *opaque, hwaddr addr,
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unsigned size)
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{
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uint32_t ret = 0;
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trace_apc_mem_readb(ret);
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return ret;
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}
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static const MemoryRegionOps apc_mem_ops = {
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.read = apc_mem_readb,
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.write = apc_mem_writeb,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1,
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}
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};
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static uint64_t slavio_sysctrl_mem_readl(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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switch (addr) {
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case 0:
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ret = s->sysctrl;
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break;
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default:
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break;
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}
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trace_slavio_sysctrl_mem_readl(ret);
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return ret;
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}
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static void slavio_sysctrl_mem_writel(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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MiscState *s = opaque;
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trace_slavio_sysctrl_mem_writel(val);
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switch (addr) {
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case 0:
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if (val & SYS_RESET) {
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s->sysctrl = SYS_RESETSTAT;
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qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
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}
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break;
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default:
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break;
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}
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}
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static const MemoryRegionOps slavio_sysctrl_mem_ops = {
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.read = slavio_sysctrl_mem_readl,
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.write = slavio_sysctrl_mem_writel,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 4,
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.max_access_size = 4,
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},
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};
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static uint64_t slavio_led_mem_readw(void *opaque, hwaddr addr,
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unsigned size)
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{
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MiscState *s = opaque;
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uint32_t ret = 0;
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switch (addr) {
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case 0:
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ret = s->leds;
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break;
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default:
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break;
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}
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trace_slavio_led_mem_readw(ret);
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return ret;
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}
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static void slavio_led_mem_writew(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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|
|
{
|
||
|
|
MiscState *s = opaque;
|
||
|
|
|
||
|
|
trace_slavio_led_mem_writew(val & 0xffff);
|
||
|
|
switch (addr) {
|
||
|
|
case 0:
|
||
|
|
s->leds = val;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static const MemoryRegionOps slavio_led_mem_ops = {
|
||
|
|
.read = slavio_led_mem_readw,
|
||
|
|
.write = slavio_led_mem_writew,
|
||
|
|
.endianness = DEVICE_NATIVE_ENDIAN,
|
||
|
|
.valid = {
|
||
|
|
.min_access_size = 2,
|
||
|
|
.max_access_size = 2,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static const VMStateDescription vmstate_misc = {
|
||
|
|
.name ="slavio_misc",
|
||
|
|
.version_id = 1,
|
||
|
|
.minimum_version_id = 1,
|
||
|
|
.fields = (VMStateField[]) {
|
||
|
|
VMSTATE_UINT32(dummy, MiscState),
|
||
|
|
VMSTATE_UINT8(config, MiscState),
|
||
|
|
VMSTATE_UINT8(aux1, MiscState),
|
||
|
|
VMSTATE_UINT8(aux2, MiscState),
|
||
|
|
VMSTATE_UINT8(diag, MiscState),
|
||
|
|
VMSTATE_UINT8(mctrl, MiscState),
|
||
|
|
VMSTATE_UINT8(sysctrl, MiscState),
|
||
|
|
VMSTATE_END_OF_LIST()
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
static void apc_init(Object *obj)
|
||
|
|
{
|
||
|
|
APCState *s = APC(obj);
|
||
|
|
SysBusDevice *dev = SYS_BUS_DEVICE(obj);
|
||
|
|
|
||
|
|
sysbus_init_irq(dev, &s->cpu_halt);
|
||
|
|
|
||
|
|
/* Power management (APC) XXX: not a Slavio device */
|
||
|
|
memory_region_init_io(&s->iomem, obj, &apc_mem_ops, s,
|
||
|
|
"apc", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(dev, &s->iomem);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void slavio_misc_init(Object *obj)
|
||
|
|
{
|
||
|
|
DeviceState *dev = DEVICE(obj);
|
||
|
|
MiscState *s = SLAVIO_MISC(obj);
|
||
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
|
||
|
|
|
||
|
|
sysbus_init_irq(sbd, &s->irq);
|
||
|
|
sysbus_init_irq(sbd, &s->fdc_tc);
|
||
|
|
|
||
|
|
/* 8 bit registers */
|
||
|
|
/* Slavio control */
|
||
|
|
memory_region_init_io(&s->cfg_iomem, obj, &slavio_cfg_mem_ops, s,
|
||
|
|
"configuration", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->cfg_iomem);
|
||
|
|
|
||
|
|
/* Diagnostics */
|
||
|
|
memory_region_init_io(&s->diag_iomem, obj, &slavio_diag_mem_ops, s,
|
||
|
|
"diagnostic", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->diag_iomem);
|
||
|
|
|
||
|
|
/* Modem control */
|
||
|
|
memory_region_init_io(&s->mdm_iomem, obj, &slavio_mdm_mem_ops, s,
|
||
|
|
"modem", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->mdm_iomem);
|
||
|
|
|
||
|
|
/* 16 bit registers */
|
||
|
|
/* ss600mp diag LEDs */
|
||
|
|
memory_region_init_io(&s->led_iomem, obj, &slavio_led_mem_ops, s,
|
||
|
|
"leds", LED_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->led_iomem);
|
||
|
|
|
||
|
|
/* 32 bit registers */
|
||
|
|
/* System control */
|
||
|
|
memory_region_init_io(&s->sysctrl_iomem, obj, &slavio_sysctrl_mem_ops, s,
|
||
|
|
"system-control", SYSCTRL_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->sysctrl_iomem);
|
||
|
|
|
||
|
|
/* AUX 1 (Misc System Functions) */
|
||
|
|
memory_region_init_io(&s->aux1_iomem, obj, &slavio_aux1_mem_ops, s,
|
||
|
|
"misc-system-functions", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->aux1_iomem);
|
||
|
|
|
||
|
|
/* AUX 2 (Software Powerdown Control) */
|
||
|
|
memory_region_init_io(&s->aux2_iomem, obj, &slavio_aux2_mem_ops, s,
|
||
|
|
"software-powerdown-control", MISC_SIZE);
|
||
|
|
sysbus_init_mmio(sbd, &s->aux2_iomem);
|
||
|
|
|
||
|
|
qdev_init_gpio_in(dev, slavio_set_power_fail, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void slavio_misc_class_init(ObjectClass *klass, void *data)
|
||
|
|
{
|
||
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
||
|
|
|
||
|
|
dc->reset = slavio_misc_reset;
|
||
|
|
dc->vmsd = &vmstate_misc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const TypeInfo slavio_misc_info = {
|
||
|
|
.name = TYPE_SLAVIO_MISC,
|
||
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
||
|
|
.instance_size = sizeof(MiscState),
|
||
|
|
.instance_init = slavio_misc_init,
|
||
|
|
.class_init = slavio_misc_class_init,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const TypeInfo apc_info = {
|
||
|
|
.name = TYPE_APC,
|
||
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
||
|
|
.instance_size = sizeof(MiscState),
|
||
|
|
.instance_init = apc_init,
|
||
|
|
};
|
||
|
|
|
||
|
|
static void slavio_misc_register_types(void)
|
||
|
|
{
|
||
|
|
type_register_static(&slavio_misc_info);
|
||
|
|
type_register_static(&apc_info);
|
||
|
|
}
|
||
|
|
|
||
|
|
type_init(slavio_misc_register_types)
|