mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-27 13:30:52 +00:00
b514f43244
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Acked-by: Helge Deller <deller@gmx.de> Message-Id: <20220504092600.10048-28-mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
340 lines
8.2 KiB
C
340 lines
8.2 KiB
C
/*
|
|
* HP-PARISC Lasi chipset emulation.
|
|
*
|
|
* (C) 2019 by Helge Deller <deller@gmx.de>
|
|
*
|
|
* This work is licensed under the GNU GPL license version 2 or later.
|
|
*
|
|
* Documentation available at:
|
|
* https://parisc.wiki.kernel.org/images-parisc/7/79/Lasi_ers.pdf
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/units.h"
|
|
#include "qemu/log.h"
|
|
#include "qapi/error.h"
|
|
#include "trace.h"
|
|
#include "hw/irq.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "sysemu/runstate.h"
|
|
#include "hppa_sys.h"
|
|
#include "hw/net/lasi_82596.h"
|
|
#include "hw/char/parallel.h"
|
|
#include "hw/char/serial.h"
|
|
#include "hw/input/lasips2.h"
|
|
#include "migration/vmstate.h"
|
|
#include "qom/object.h"
|
|
#include "lasi.h"
|
|
|
|
|
|
static bool lasi_chip_mem_valid(void *opaque, hwaddr addr,
|
|
unsigned size, bool is_write,
|
|
MemTxAttrs attrs)
|
|
{
|
|
bool ret = false;
|
|
|
|
switch (addr) {
|
|
case LASI_IRR:
|
|
case LASI_IMR:
|
|
case LASI_IPR:
|
|
case LASI_ICR:
|
|
case LASI_IAR:
|
|
|
|
case (LASI_LAN_HPA - LASI_HPA):
|
|
case (LASI_LPT_HPA - LASI_HPA):
|
|
case (LASI_UART_HPA - LASI_HPA):
|
|
case (LASI_RTC_HPA - LASI_HPA):
|
|
|
|
case LASI_PCR ... LASI_AMR:
|
|
ret = true;
|
|
}
|
|
|
|
trace_lasi_chip_mem_valid(addr, ret);
|
|
return ret;
|
|
}
|
|
|
|
static MemTxResult lasi_chip_read_with_attrs(void *opaque, hwaddr addr,
|
|
uint64_t *data, unsigned size,
|
|
MemTxAttrs attrs)
|
|
{
|
|
LasiState *s = opaque;
|
|
MemTxResult ret = MEMTX_OK;
|
|
uint32_t val;
|
|
|
|
switch (addr) {
|
|
case LASI_IRR:
|
|
val = s->irr;
|
|
break;
|
|
case LASI_IMR:
|
|
val = s->imr;
|
|
break;
|
|
case LASI_IPR:
|
|
val = s->ipr;
|
|
/* Any read to IPR clears the register. */
|
|
s->ipr = 0;
|
|
break;
|
|
case LASI_ICR:
|
|
val = s->icr & ICR_BUS_ERROR_BIT; /* bus_error */
|
|
break;
|
|
case LASI_IAR:
|
|
val = s->iar;
|
|
break;
|
|
|
|
case (LASI_LAN_HPA - LASI_HPA):
|
|
case (LASI_LPT_HPA - LASI_HPA):
|
|
case (LASI_UART_HPA - LASI_HPA):
|
|
val = 0;
|
|
break;
|
|
case (LASI_RTC_HPA - LASI_HPA):
|
|
val = time(NULL);
|
|
val += s->rtc_ref;
|
|
break;
|
|
|
|
case LASI_PCR:
|
|
case LASI_VER: /* only version 0 existed. */
|
|
case LASI_IORESET:
|
|
val = 0;
|
|
break;
|
|
case LASI_ERRLOG:
|
|
val = s->errlog;
|
|
break;
|
|
case LASI_AMR:
|
|
val = s->amr;
|
|
break;
|
|
|
|
default:
|
|
/* Controlled by lasi_chip_mem_valid above. */
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
trace_lasi_chip_read(addr, val);
|
|
|
|
*data = val;
|
|
return ret;
|
|
}
|
|
|
|
static MemTxResult lasi_chip_write_with_attrs(void *opaque, hwaddr addr,
|
|
uint64_t val, unsigned size,
|
|
MemTxAttrs attrs)
|
|
{
|
|
LasiState *s = opaque;
|
|
|
|
trace_lasi_chip_write(addr, val);
|
|
|
|
switch (addr) {
|
|
case LASI_IRR:
|
|
/* read-only. */
|
|
break;
|
|
case LASI_IMR:
|
|
s->imr = val;
|
|
if (((val & LASI_IRQ_BITS) != val) && (val != 0xffffffff)) {
|
|
qemu_log_mask(LOG_GUEST_ERROR,
|
|
"LASI: tried to set invalid %lx IMR value.\n",
|
|
(unsigned long) val);
|
|
}
|
|
break;
|
|
case LASI_IPR:
|
|
/* Any write to IPR clears the register. */
|
|
s->ipr = 0;
|
|
break;
|
|
case LASI_ICR:
|
|
s->icr = val;
|
|
/* if (val & ICR_TOC_BIT) issue_toc(); */
|
|
break;
|
|
case LASI_IAR:
|
|
s->iar = val;
|
|
break;
|
|
|
|
case (LASI_LAN_HPA - LASI_HPA):
|
|
/* XXX: reset LAN card */
|
|
break;
|
|
case (LASI_LPT_HPA - LASI_HPA):
|
|
/* XXX: reset parallel port */
|
|
break;
|
|
case (LASI_UART_HPA - LASI_HPA):
|
|
/* XXX: reset serial port */
|
|
break;
|
|
case (LASI_RTC_HPA - LASI_HPA):
|
|
s->rtc_ref = val - time(NULL);
|
|
break;
|
|
|
|
case LASI_PCR:
|
|
if (val == 0x02) { /* immediately power off */
|
|
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
|
|
}
|
|
break;
|
|
case LASI_ERRLOG:
|
|
s->errlog = val;
|
|
break;
|
|
case LASI_VER:
|
|
/* read-only. */
|
|
break;
|
|
case LASI_IORESET:
|
|
break; /* XXX: TODO: Reset various devices. */
|
|
case LASI_AMR:
|
|
s->amr = val;
|
|
break;
|
|
|
|
default:
|
|
/* Controlled by lasi_chip_mem_valid above. */
|
|
g_assert_not_reached();
|
|
}
|
|
return MEMTX_OK;
|
|
}
|
|
|
|
static const MemoryRegionOps lasi_chip_ops = {
|
|
.read_with_attrs = lasi_chip_read_with_attrs,
|
|
.write_with_attrs = lasi_chip_write_with_attrs,
|
|
.endianness = DEVICE_BIG_ENDIAN,
|
|
.valid = {
|
|
.min_access_size = 1,
|
|
.max_access_size = 4,
|
|
.accepts = lasi_chip_mem_valid,
|
|
},
|
|
.impl = {
|
|
.min_access_size = 1,
|
|
.max_access_size = 4,
|
|
},
|
|
};
|
|
|
|
static const VMStateDescription vmstate_lasi = {
|
|
.name = "Lasi",
|
|
.version_id = 1,
|
|
.minimum_version_id = 1,
|
|
.fields = (VMStateField[]) {
|
|
VMSTATE_UINT32(irr, LasiState),
|
|
VMSTATE_UINT32(imr, LasiState),
|
|
VMSTATE_UINT32(ipr, LasiState),
|
|
VMSTATE_UINT32(icr, LasiState),
|
|
VMSTATE_UINT32(iar, LasiState),
|
|
VMSTATE_UINT32(errlog, LasiState),
|
|
VMSTATE_UINT32(amr, LasiState),
|
|
VMSTATE_END_OF_LIST()
|
|
}
|
|
};
|
|
|
|
|
|
static void lasi_set_irq(void *opaque, int irq, int level)
|
|
{
|
|
LasiState *s = opaque;
|
|
uint32_t bit = 1u << irq;
|
|
|
|
if (level) {
|
|
s->ipr |= bit;
|
|
if (bit & s->imr) {
|
|
uint32_t iar = s->iar;
|
|
s->irr |= bit;
|
|
if ((s->icr & ICR_BUS_ERROR_BIT) == 0) {
|
|
stl_be_phys(&address_space_memory, iar & -32, iar & 31);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int lasi_get_irq(unsigned long hpa)
|
|
{
|
|
switch (hpa) {
|
|
case LASI_HPA:
|
|
return 14;
|
|
case LASI_UART_HPA:
|
|
return 5;
|
|
case LASI_LPT_HPA:
|
|
return 7;
|
|
case LASI_LAN_HPA:
|
|
return 8;
|
|
case LASI_SCSI_HPA:
|
|
return 9;
|
|
case LASI_AUDIO_HPA:
|
|
return 13;
|
|
case LASI_PS2KBD_HPA:
|
|
case LASI_PS2MOU_HPA:
|
|
return 26;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
DeviceState *lasi_initfn(MemoryRegion *address_space)
|
|
{
|
|
DeviceState *dev;
|
|
LasiState *s;
|
|
|
|
dev = qdev_new(TYPE_LASI_CHIP);
|
|
s = LASI_CHIP(dev);
|
|
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
|
|
|
|
/* LAN */
|
|
if (enable_lasi_lan()) {
|
|
qemu_irq lan_irq = qemu_allocate_irq(lasi_set_irq, s,
|
|
lasi_get_irq(LASI_LAN_HPA));
|
|
lasi_82596_init(address_space, LASI_LAN_HPA, lan_irq);
|
|
}
|
|
|
|
/* Parallel port */
|
|
qemu_irq lpt_irq = qemu_allocate_irq(lasi_set_irq, s,
|
|
lasi_get_irq(LASI_LPT_HPA));
|
|
parallel_mm_init(address_space, LASI_LPT_HPA + 0x800, 0,
|
|
lpt_irq, parallel_hds[0]);
|
|
|
|
if (serial_hd(1)) {
|
|
/* Serial port */
|
|
qemu_irq serial_irq = qemu_allocate_irq(lasi_set_irq, s,
|
|
lasi_get_irq(LASI_UART_HPA));
|
|
serial_mm_init(address_space, LASI_UART_HPA + 0x800, 0,
|
|
serial_irq, 8000000 / 16,
|
|
serial_hd(0), DEVICE_NATIVE_ENDIAN);
|
|
}
|
|
|
|
/* PS/2 Keyboard/Mouse */
|
|
qemu_irq ps2kbd_irq = qemu_allocate_irq(lasi_set_irq, s,
|
|
lasi_get_irq(LASI_PS2KBD_HPA));
|
|
lasips2_init(address_space, LASI_PS2KBD_HPA, ps2kbd_irq);
|
|
|
|
return dev;
|
|
}
|
|
|
|
static void lasi_reset(DeviceState *dev)
|
|
{
|
|
LasiState *s = LASI_CHIP(dev);
|
|
|
|
s->iar = CPU_HPA + 3;
|
|
|
|
/* Real time clock (RTC), it's only one 32-bit counter @9000 */
|
|
s->rtc = time(NULL);
|
|
s->rtc_ref = 0;
|
|
}
|
|
|
|
static void lasi_init(Object *obj)
|
|
{
|
|
LasiState *s = LASI_CHIP(obj);
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
|
|
|
|
memory_region_init_io(&s->this_mem, OBJECT(s), &lasi_chip_ops,
|
|
s, "lasi", 0x100000);
|
|
|
|
sysbus_init_mmio(sbd, &s->this_mem);
|
|
}
|
|
|
|
static void lasi_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->reset = lasi_reset;
|
|
dc->vmsd = &vmstate_lasi;
|
|
}
|
|
|
|
static const TypeInfo lasi_pcihost_info = {
|
|
.name = TYPE_LASI_CHIP,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_init = lasi_init,
|
|
.instance_size = sizeof(LasiState),
|
|
.class_init = lasi_class_init,
|
|
};
|
|
|
|
static void lasi_register_types(void)
|
|
{
|
|
type_register_static(&lasi_pcihost_info);
|
|
}
|
|
|
|
type_init(lasi_register_types)
|