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qemu/hw/slavio_misc.c
Gerd Hoffmann ee6847d19b qdev: rework device properties. 
This patch is a major overhaul of the device properties.  The properties
are saved directly in the device state struct now, the linked list of
property values is gone.

Advantages:
  * We don't have to maintain the list with the property values.
  * The value in the property list and the value actually used by
    the device can't go out of sync any more (used to happen for
    the pci.devfn == -1 case) because there is only one place where
    the value is stored.
  * A record describing the property is required now, you can't set
    random properties any more.

There are bus-specific and device-specific properties.  The former
should be used for properties common to all bus drivers.  Typical
use case is bus addressing, i.e. pci.devfn and i2c.address.

Properties have a PropertyInfo struct attached with name, size and
function pointers to parse and print properties.  A few common property
types have PropertyInfos defined in qdev-properties.c.  Drivers are free
to implement their own very special property parsers if needed.

Properties can have default values.  If unset they are zero-filled.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16 17:28:51 -05:00

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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 "sun4m.h"
#include "sysemu.h"
#include "sysbus.h"
/* debug misc */
//#define DEBUG_MISC
/*
* 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.
*/
#ifdef DEBUG_MISC
#define MISC_DPRINTF(fmt, ...) \
do { printf("MISC: " fmt , ## __VA_ARGS__); } while (0)
#else
#define MISC_DPRINTF(fmt, ...)
#endif
typedef struct MiscState {
SysBusDevice busdev;
qemu_irq irq;
uint8_t config;
uint8_t aux1, aux2;
uint8_t diag, mctrl;
uint32_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 MISC_LEDS 0x01600000
#define MISC_CFG 0x01800000
#define MISC_DIAG 0x01a00000
#define MISC_MDM 0x01b00000
#define MISC_SYS 0x01f00000
#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)) {
MISC_DPRINTF("Raise IRQ\n");
qemu_irq_raise(s->irq);
} else {
MISC_DPRINTF("Lower IRQ\n");
qemu_irq_lower(s->irq);
}
}
static void slavio_misc_reset(void *opaque)
{
MiscState *s = opaque;
// Diagnostic and system control registers not cleared in reset
s->config = s->aux1 = s->aux2 = s->mctrl = 0;
}
void slavio_set_power_fail(void *opaque, int power_failing)
{
MiscState *s = opaque;
MISC_DPRINTF("Power fail: %d, config: %d\n", 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;
MISC_DPRINTF("Write config %2.2x\n", 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;
MISC_DPRINTF("Read config %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *slavio_cfg_mem_read[3] = {
slavio_cfg_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
MISC_DPRINTF("Write diag %2.2x\n", 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;
MISC_DPRINTF("Read diag %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *slavio_diag_mem_read[3] = {
slavio_diag_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
MISC_DPRINTF("Write modem control %2.2x\n", 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;
MISC_DPRINTF("Read modem control %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *slavio_mdm_mem_read[3] = {
slavio_mdm_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
MISC_DPRINTF("Write aux1 %2.2x\n", 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;
MISC_DPRINTF("Read aux1 %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *slavio_aux1_mem_read[3] = {
slavio_aux1_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
MISC_DPRINTF("Write aux2 %2.2x\n", val);
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;
MISC_DPRINTF("Read aux2 %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *slavio_aux2_mem_read[3] = {
slavio_aux2_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
MISC_DPRINTF("Write power management %2.2x\n", 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;
MISC_DPRINTF("Read power management %2.2x\n", ret);
return ret;
}
static CPUReadMemoryFunc *apc_mem_read[3] = {
apc_mem_readb,
NULL,
NULL,
};
static CPUWriteMemoryFunc *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;
}
MISC_DPRINTF("Read system control %08x\n", ret);
return ret;
}
static void slavio_sysctrl_mem_writel(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
MISC_DPRINTF("Write system control %08x\n", val);
switch (addr) {
case 0:
if (val & SYS_RESET) {
s->sysctrl = SYS_RESETSTAT;
qemu_system_reset_request();
}
break;
default:
break;
}
}
static CPUReadMemoryFunc *slavio_sysctrl_mem_read[3] = {
NULL,
NULL,
slavio_sysctrl_mem_readl,
};
static CPUWriteMemoryFunc *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;
}
MISC_DPRINTF("Read diagnostic LED %04x\n", ret);
return ret;
}
static void slavio_led_mem_writew(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
MiscState *s = opaque;
MISC_DPRINTF("Write diagnostic LED %04x\n", val & 0xffff);
switch (addr) {
case 0:
s->leds = val;
break;
default:
break;
}
}
static CPUReadMemoryFunc *slavio_led_mem_read[3] = {
NULL,
slavio_led_mem_readw,
NULL,
};
static CPUWriteMemoryFunc *slavio_led_mem_write[3] = {
NULL,
slavio_led_mem_writew,
NULL,
};
static void slavio_misc_save(QEMUFile *f, void *opaque)
{
MiscState *s = opaque;
uint32_t tmp = 0;
uint8_t tmp8;
qemu_put_be32s(f, &tmp); /* ignored, was IRQ. */
qemu_put_8s(f, &s->config);
qemu_put_8s(f, &s->aux1);
qemu_put_8s(f, &s->aux2);
qemu_put_8s(f, &s->diag);
qemu_put_8s(f, &s->mctrl);
tmp8 = s->sysctrl & 0xff;
qemu_put_8s(f, &tmp8);
}
static int slavio_misc_load(QEMUFile *f, void *opaque, int version_id)
{
MiscState *s = opaque;
uint32_t tmp;
uint8_t tmp8;
if (version_id != 1)
return -EINVAL;
qemu_get_be32s(f, &tmp);
qemu_get_8s(f, &s->config);
qemu_get_8s(f, &s->aux1);
qemu_get_8s(f, &s->aux2);
qemu_get_8s(f, &s->diag);
qemu_get_8s(f, &s->mctrl);
qemu_get_8s(f, &tmp8);
s->sysctrl = (uint32_t)tmp8;
return 0;
}
void *slavio_misc_init(target_phys_addr_t base,
target_phys_addr_t aux1_base,
target_phys_addr_t aux2_base, qemu_irq irq,
qemu_irq fdc_tc)
{
DeviceState *dev;
SysBusDevice *s;
MiscState *d;
dev = qdev_create(NULL, "slavio_misc");
qdev_init(dev);
s = sysbus_from_qdev(dev);
if (base) {
/* 8 bit registers */
/* Slavio control */
sysbus_mmio_map(s, 0, base + MISC_CFG);
/* Diagnostics */
sysbus_mmio_map(s, 1, base + MISC_DIAG);
/* Modem control */
sysbus_mmio_map(s, 2, base + MISC_MDM);
/* 16 bit registers */
/* ss600mp diag LEDs */
sysbus_mmio_map(s, 3, base + MISC_LEDS);
/* 32 bit registers */
/* System control */
sysbus_mmio_map(s, 4, base + MISC_SYS);
}
if (aux1_base) {
/* AUX 1 (Misc System Functions) */
sysbus_mmio_map(s, 5, aux1_base);
}
if (aux2_base) {
/* AUX 2 (Software Powerdown Control) */
sysbus_mmio_map(s, 6, aux2_base);
}
sysbus_connect_irq(s, 0, irq);
sysbus_connect_irq(s, 1, fdc_tc);
d = FROM_SYSBUS(MiscState, s);
return d;
}
static void 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);
sysbus_init_mmio(dev, MISC_SIZE, io);
}
void apc_init(target_phys_addr_t power_base, qemu_irq cpu_halt)
{
DeviceState *dev;
SysBusDevice *s;
dev = qdev_create(NULL, "apc");
qdev_init(dev);
s = sysbus_from_qdev(dev);
/* Power management (APC) XXX: not a Slavio device */
sysbus_mmio_map(s, 0, power_base);
sysbus_connect_irq(s, 0, cpu_halt);
}
static void 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);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* Diagnostics */
io = cpu_register_io_memory(slavio_diag_mem_read,
slavio_diag_mem_write, s);
sysbus_init_mmio(dev, MISC_SIZE, io);
/* Modem control */
io = cpu_register_io_memory(slavio_mdm_mem_read,
slavio_mdm_mem_write, s);
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);
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);
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);
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);
sysbus_init_mmio(dev, MISC_SIZE, io);
register_savevm("slavio_misc", -1, 1, slavio_misc_save, slavio_misc_load,
s);
qemu_register_reset(slavio_misc_reset, s);
slavio_misc_reset(s);
}
static SysBusDeviceInfo slavio_misc_info = {
.init = slavio_misc_init1,
.qdev.name = "slavio_misc",
.qdev.size = sizeof(MiscState),
};
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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