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qemu/hw/slavio_misc.c

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/*
* QEMU Sparc SLAVIO aux io port emulation
*
* Copyright (c) 2005 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "sysemu.h"
#include "sysbus.h"
#include "trace.h"
/*
* This is the auxio port, chip control and system control part of
* chip STP2001 (Slave I/O), also produced as NCR89C105. See
* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C105.txt
*
* This also includes the PMC CPU idle controller.
*/
typedef struct MiscState {
SysBusDevice busdev;
qemu_irq irq;
uint32_t dummy;
uint8_t config;
uint8_t aux1, aux2;
uint8_t diag, mctrl;
uint8_t sysctrl;
uint16_t leds;
qemu_irq fdc_tc;
} MiscState;
typedef struct APCState {
SysBusDevice busdev;
qemu_irq cpu_halt;
} APCState;
#define MISC_SIZE 1
#define SYSCTRL_SIZE 4
#define AUX1_TC 0x02
#define AUX2_PWROFF 0x01
#define AUX2_PWRINTCLR 0x02
#define AUX2_PWRFAIL 0x20
#define CFG_PWRINTEN 0x08
#define SYS_RESET 0x01
#define SYS_RESETSTAT 0x02
static void slavio_misc_update_irq(void *opaque)
{
MiscState *s = opaque;
if ((s->aux2 & AUX2_PWRFAIL) && (s->config & CFG_PWRINTEN)) {
trace_slavio_misc_update_irq_raise();
qemu_irq_raise(s->irq);
} else {
trace_slavio_misc_update_irq_lower();
qemu_irq_lower(s->irq);
}
}
static void slavio_misc_reset(DeviceState *d)
{
MiscState *s = container_of(d, MiscState, busdev.qdev);
// Diagnostic and system control registers not cleared in reset
s->config = s->aux1 = s->aux2 = s->mctrl = 0;
}
static void slavio_set_power_fail(void *opaque, int irq, int power_failing)
{
MiscState *s = opaque;
trace_slavio_set_power_fail(power_failing, s->config);
if (power_failing && (s->config & CFG_PWRINTEN)) {
s->aux2 |= AUX2_PWRFAIL;
} else {
s->aux2 &= ~AUX2_PWRFAIL;
}
slavio_misc_update_irq(s);
}
static void slavio_cfg_mem_writeb(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_cfg_mem_writeb(val & 0xff);
s->config = val & 0xff;
slavio_misc_update_irq(s);
}
static uint32_t slavio_cfg_mem_readb(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
ret = s->config;
trace_slavio_cfg_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const slavio_cfg_mem_read[3] = {
slavio_cfg_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const slavio_cfg_mem_write[3] = {
slavio_cfg_mem_writeb,
NULL,
NULL,
};
static void slavio_diag_mem_writeb(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_diag_mem_writeb(val & 0xff);
s->diag = val & 0xff;
}
static uint32_t slavio_diag_mem_readb(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
ret = s->diag;
trace_slavio_diag_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const slavio_diag_mem_read[3] = {
slavio_diag_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const slavio_diag_mem_write[3] = {
slavio_diag_mem_writeb,
NULL,
NULL,
};
static void slavio_mdm_mem_writeb(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_mdm_mem_writeb(val & 0xff);
s->mctrl = val & 0xff;
}
static uint32_t slavio_mdm_mem_readb(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
ret = s->mctrl;
trace_slavio_mdm_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const slavio_mdm_mem_read[3] = {
slavio_mdm_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const slavio_mdm_mem_write[3] = {
slavio_mdm_mem_writeb,
NULL,
NULL,
};
static void slavio_aux1_mem_writeb(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_aux1_mem_writeb(val & 0xff);
if (val & AUX1_TC) {
// Send a pulse to floppy terminal count line
if (s->fdc_tc) {
qemu_irq_raise(s->fdc_tc);
qemu_irq_lower(s->fdc_tc);
}
val &= ~AUX1_TC;
}
s->aux1 = val & 0xff;
}
static uint32_t slavio_aux1_mem_readb(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
ret = s->aux1;
trace_slavio_aux1_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const slavio_aux1_mem_read[3] = {
slavio_aux1_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const slavio_aux1_mem_write[3] = {
slavio_aux1_mem_writeb,
NULL,
NULL,
};
static void slavio_aux2_mem_writeb(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
val &= AUX2_PWRINTCLR | AUX2_PWROFF;
trace_slavio_aux2_mem_writeb(val & 0xff);
val |= s->aux2 & AUX2_PWRFAIL;
if (val & AUX2_PWRINTCLR) // Clear Power Fail int
val &= AUX2_PWROFF;
s->aux2 = val;
if (val & AUX2_PWROFF)
qemu_system_shutdown_request();
slavio_misc_update_irq(s);
}
static uint32_t slavio_aux2_mem_readb(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
ret = s->aux2;
trace_slavio_aux2_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const slavio_aux2_mem_read[3] = {
slavio_aux2_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const slavio_aux2_mem_write[3] = {
slavio_aux2_mem_writeb,
NULL,
NULL,
};
static void apc_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
APCState *s = opaque;
trace_apc_mem_writeb(val & 0xff);
qemu_irq_raise(s->cpu_halt);
}
static uint32_t apc_mem_readb(void *opaque, target_phys_addr_t addr)
{
uint32_t ret = 0;
trace_apc_mem_readb(ret);
return ret;
}
static CPUReadMemoryFunc * const apc_mem_read[3] = {
apc_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc * const apc_mem_write[3] = {
apc_mem_writeb,
NULL,
NULL,
};
static uint32_t slavio_sysctrl_mem_readl(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
switch (addr) {
case 0:
ret = s->sysctrl;
break;
default:
break;
}
trace_slavio_sysctrl_mem_readl(ret);
return ret;
}
static void slavio_sysctrl_mem_writel(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_sysctrl_mem_writel(val);
switch (addr) {
case 0:
if (val & SYS_RESET) {
s->sysctrl = SYS_RESETSTAT;
qemu_system_reset_request();
}
break;
default:
break;
}
}
static CPUReadMemoryFunc * const slavio_sysctrl_mem_read[3] = {
NULL,
NULL,
slavio_sysctrl_mem_readl,
};
static CPUWriteMemoryFunc * const slavio_sysctrl_mem_write[3] = {
NULL,
NULL,
slavio_sysctrl_mem_writel,
};
static uint32_t slavio_led_mem_readw(void *opaque, target_phys_addr_t addr)
{
MiscState *s = opaque;
uint32_t ret = 0;
switch (addr) {
case 0:
ret = s->leds;
break;
default:
break;
}
trace_slavio_led_mem_readw(ret);
return ret;
}
static void slavio_led_mem_writew(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
trace_slavio_led_mem_readw(val & 0xffff);
switch (addr) {
case 0:
s->leds = val;
break;
default:
break;
}
}
static CPUReadMemoryFunc * const slavio_led_mem_read[3] = {
NULL,
slavio_led_mem_readw,
NULL,
};
static CPUWriteMemoryFunc * const slavio_led_mem_write[3] = {
NULL,
slavio_led_mem_writew,
NULL,
};
static const VMStateDescription vmstate_misc = {
.name ="slavio_misc",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 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 int apc_init1(SysBusDevice *dev)
{
APCState *s = FROM_SYSBUS(APCState, dev);
int io;
sysbus_init_irq(dev, &s->cpu_halt);
/* Power management (APC) XXX: not a Slavio device */
io = cpu_register_io_memory(apc_mem_read, apc_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
return 0;
}
static int slavio_misc_init1(SysBusDevice *dev)
{
MiscState *s = FROM_SYSBUS(MiscState, dev);
int io;
sysbus_init_irq(dev, &s->irq);
sysbus_init_irq(dev, &s->fdc_tc);
/* 8 bit registers */
/* Slavio control */
io = cpu_register_io_memory(slavio_cfg_mem_read,
slavio_cfg_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* Diagnostics */
io = cpu_register_io_memory(slavio_diag_mem_read,
slavio_diag_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* Modem control */
io = cpu_register_io_memory(slavio_mdm_mem_read,
slavio_mdm_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* 16 bit registers */
/* ss600mp diag LEDs */
io = cpu_register_io_memory(slavio_led_mem_read,
slavio_led_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* 32 bit registers */
/* System control */
io = cpu_register_io_memory(slavio_sysctrl_mem_read,
slavio_sysctrl_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, SYSCTRL_SIZE, io);
/* AUX 1 (Misc System Functions) */
io = cpu_register_io_memory(slavio_aux1_mem_read,
slavio_aux1_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* AUX 2 (Software Powerdown Control) */
io = cpu_register_io_memory(slavio_aux2_mem_read,
slavio_aux2_mem_write, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, MISC_SIZE, io);
qdev_init_gpio_in(&dev->qdev, slavio_set_power_fail, 1);
return 0;
}
static SysBusDeviceInfo slavio_misc_info = {
.init = slavio_misc_init1,
.qdev.name = "slavio_misc",
.qdev.size = sizeof(MiscState),
.qdev.vmsd = &vmstate_misc,
.qdev.reset = slavio_misc_reset,
};
static SysBusDeviceInfo apc_info = {
.init = apc_init1,
.qdev.name = "apc",
.qdev.size = sizeof(MiscState),
};
static void slavio_misc_register_devices(void)
{
sysbus_register_withprop(&slavio_misc_info);
sysbus_register_withprop(&apc_info);
}
device_init(slavio_misc_register_devices)
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