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pc: Implement -no-hpet as sugar for -machine hpet=on 

Get rid of yet another global variable.

The default will be hpet=on only if CONFIG_HPET=y.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20201021144716.1536388-1-ehabkost@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eduardo Habkost 2020-10-21 10:47:16 -04:00 committed by Michael S. Tsirkin
parent 170a6794ef
commit 0259c78ca7
5 changed files with 47 additions and 26 deletions
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63
hw/i386/pc.c
View File

@ -1142,28 +1142,31 @@ void pc_basic_device_init(struct PCMachineState *pcms,
* Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT
* when the HPET wants to take over. Thus we have to disable the latter.
*/
if (!no_hpet && (!kvm_irqchip_in_kernel() || kvm_has_pit_state2())) {
if (pcms->hpet_enabled && (!kvm_irqchip_in_kernel() ||
kvm_has_pit_state2())) {
hpet = qdev_try_new(TYPE_HPET);
if (hpet) {
/* For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7
* and earlier, use IRQ2 for compat. Otherwise, use IRQ16~23,
* IRQ8 and IRQ2.
*/
uint8_t compat = object_property_get_uint(OBJECT(hpet),
HPET_INTCAP, NULL);
if (!compat) {
qdev_prop_set_uint32(hpet, HPET_INTCAP, hpet_irqs);
}
sysbus_realize_and_unref(SYS_BUS_DEVICE(hpet), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE);
for (i = 0; i < GSI_NUM_PINS; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]);
}
pit_isa_irq = -1;
pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT);
rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT);
if (!hpet) {
error_report("couldn't create HPET device");
exit(1);
}
/* For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7
* and earlier, use IRQ2 for compat. Otherwise, use IRQ16~23,
* IRQ8 and IRQ2.
*/
uint8_t compat = object_property_get_uint(OBJECT(hpet),
HPET_INTCAP, NULL);
if (!compat) {
qdev_prop_set_uint32(hpet, HPET_INTCAP, hpet_irqs);
}
sysbus_realize_and_unref(SYS_BUS_DEVICE(hpet), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE);
for (i = 0; i < GSI_NUM_PINS; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]);
}
pit_isa_irq = -1;
pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT);
rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT);
}
*rtc_state = mc146818_rtc_init(isa_bus, 2000, rtc_irq);
@ -1535,6 +1538,20 @@ static void pc_machine_set_pit(Object *obj, bool value, Error **errp)
pcms->pit_enabled = value;
}
static bool pc_machine_get_hpet(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->hpet_enabled;
}
static void pc_machine_set_hpet(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->hpet_enabled = value;
}
static void pc_machine_get_max_ram_below_4g(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
@ -1585,6 +1602,9 @@ static void pc_machine_initfn(Object *obj)
pcms->smbus_enabled = true;
pcms->sata_enabled = true;
pcms->pit_enabled = true;
#ifdef CONFIG_HPET
pcms->hpet_enabled = true;
#endif
pc_system_flash_create(pcms);
pcms->pcspk = isa_new(TYPE_PC_SPEAKER);
@ -1705,6 +1725,9 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
object_class_property_add_bool(oc, PC_MACHINE_PIT,
pc_machine_get_pit, pc_machine_set_pit);
object_class_property_add_bool(oc, "hpet",
pc_machine_get_hpet, pc_machine_set_hpet);
}
static const TypeInfo pc_machine_info = {

2
hw/i386/pc_piix.c
View File

@ -216,7 +216,7 @@ static void pc_init1(MachineState *machine,
i440fx_state = NULL;
isa_bus = isa_bus_new(NULL, get_system_memory(), system_io,
&error_abort);
no_hpet = 1;
pcms->hpet_enabled = false;
}
isa_bus_irqs(isa_bus, x86ms->gsi);

1
include/hw/i386/pc.h
View File

@ -43,6 +43,7 @@ typedef struct PCMachineState {
bool smbus_enabled;
bool sata_enabled;
bool pit_enabled;
bool hpet_enabled;
/* NUMA information: */
uint64_t numa_nodes;

3
include/hw/i386/x86.h
View File

@ -126,7 +126,4 @@ qemu_irq x86_allocate_cpu_irq(void);
void gsi_handler(void *opaque, int n, int level);
void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name);
/* hpet.c */
extern int no_hpet;
#endif

4
softmmu/vl.c
View File

@ -146,7 +146,6 @@ static Chardev **serial_hds;
Chardev *parallel_hds[MAX_PARALLEL_PORTS];
int win2k_install_hack = 0;
int singlestep = 0;
int no_hpet = 0;
int fd_bootchk = 1;
static int no_reboot;
int no_shutdown = 0;
@ -3562,7 +3561,8 @@ void qemu_init(int argc, char **argv, char **envp)
qemu_opts_parse_noisily(olist, "acpi=off", false);
break;
case QEMU_OPTION_no_hpet:
no_hpet = 1;
olist = qemu_find_opts("machine");
qemu_opts_parse_noisily(olist, "hpet=off", false);
break;
case QEMU_OPTION_no_reboot:
no_reboot = 1;