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Diffstat (limited to 'hw/isa/lpc_ich9.c')
-rw-r--r--hw/isa/lpc_ich9.c89
1 files changed, 51 insertions, 38 deletions
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index c1a4f1b34c..10d1ee8b93 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -49,8 +49,6 @@
#include "sysemu/sysemu.h"
#include "qom/cpu.h"
-static int ich9_lpc_sci_irq(ICH9LPCState *lpc);
-
/*****************************************************************************/
/* ICH9 LPC PCI to ISA bridge */
@@ -204,41 +202,28 @@ static void ich9_lpc_pic_irq(ICH9LPCState *lpc, int pirq_num,
abort();
}
-/* pic_irq: i8254 irq 0-15 */
-static void ich9_lpc_update_pic(ICH9LPCState *lpc, int pic_irq)
+/* gsi: i8259+ioapic irq 0-15, otherwise assert */
+static void ich9_lpc_update_pic(ICH9LPCState *lpc, int gsi)
{
int i, pic_level;
+ assert(gsi < ICH9_LPC_PIC_NUM_PINS);
+
/* The pic level is the logical OR of all the PCI irqs mapped to it */
pic_level = 0;
for (i = 0; i < ICH9_LPC_NB_PIRQS; i++) {
int tmp_irq;
int tmp_dis;
ich9_lpc_pic_irq(lpc, i, &tmp_irq, &tmp_dis);
- if (!tmp_dis && pic_irq == tmp_irq) {
+ if (!tmp_dis && tmp_irq == gsi) {
pic_level |= pci_bus_get_irq_level(lpc->d.bus, i);
}
}
- if (pic_irq == ich9_lpc_sci_irq(lpc)) {
+ if (gsi == lpc->sci_gsi) {
pic_level |= lpc->sci_level;
}
- qemu_set_irq(lpc->pic[pic_irq], pic_level);
-}
-
-/* pirq: pirq[A-H] 0-7*/
-static void ich9_lpc_update_by_pirq(ICH9LPCState *lpc, int pirq)
-{
- int pic_irq;
- int pic_dis;
-
- ich9_lpc_pic_irq(lpc, pirq, &pic_irq, &pic_dis);
- assert(pic_irq < ICH9_LPC_PIC_NUM_PINS);
- if (pic_dis) {
- return;
- }
-
- ich9_lpc_update_pic(lpc, pic_irq);
+ qemu_set_irq(lpc->gsi[gsi], pic_level);
}
/* APIC mode: GSIx: PIRQ[A-H] -> GSI 16, ... no pirq shares same APIC pins. */
@@ -252,29 +237,32 @@ static int ich9_gsi_to_pirq(int gsi)
return gsi - ICH9_LPC_PIC_NUM_PINS;
}
+/* gsi: ioapic irq 16-23, otherwise assert */
static void ich9_lpc_update_apic(ICH9LPCState *lpc, int gsi)
{
int level = 0;
- if (gsi >= ICH9_LPC_PIC_NUM_PINS) {
- level |= pci_bus_get_irq_level(lpc->d.bus, ich9_gsi_to_pirq(gsi));
- }
- if (gsi == ich9_lpc_sci_irq(lpc)) {
+ assert(gsi >= ICH9_LPC_PIC_NUM_PINS);
+
+ level |= pci_bus_get_irq_level(lpc->d.bus, ich9_gsi_to_pirq(gsi));
+ if (gsi == lpc->sci_gsi) {
level |= lpc->sci_level;
}
- qemu_set_irq(lpc->ioapic[gsi], level);
+ qemu_set_irq(lpc->gsi[gsi], level);
}
void ich9_lpc_set_irq(void *opaque, int pirq, int level)
{
ICH9LPCState *lpc = opaque;
+ int pic_irq, pic_dis;
assert(0 <= pirq);
assert(pirq < ICH9_LPC_NB_PIRQS);
ich9_lpc_update_apic(lpc, ich9_pirq_to_gsi(pirq));
- ich9_lpc_update_by_pirq(lpc, pirq);
+ ich9_lpc_pic_irq(lpc, pirq, &pic_irq, &pic_dis);
+ ich9_lpc_update_pic(lpc, pic_irq);
}
/* return the pirq number (PIRQ[A-H]:0-7) corresponding to
@@ -360,13 +348,14 @@ static void ich9_set_sci(void *opaque, int irq_num, int level)
}
lpc->sci_level = level;
- irq = ich9_lpc_sci_irq(lpc);
+ irq = lpc->sci_gsi;
if (irq < 0) {
return;
}
- ich9_lpc_update_apic(lpc, irq);
- if (irq < ICH9_LPC_PIC_NUM_PINS) {
+ if (irq >= ICH9_LPC_PIC_NUM_PINS) {
+ ich9_lpc_update_apic(lpc, irq);
+ } else {
ich9_lpc_update_pic(lpc, irq);
}
}
@@ -403,12 +392,27 @@ static void ich9_apm_ctrl_changed(uint32_t val, void *arg)
/* config:PMBASE */
static void
-ich9_lpc_pmbase_update(ICH9LPCState *lpc)
+ich9_lpc_pmbase_sci_update(ICH9LPCState *lpc)
{
uint32_t pm_io_base = pci_get_long(lpc->d.config + ICH9_LPC_PMBASE);
- pm_io_base &= ICH9_LPC_PMBASE_BASE_ADDRESS_MASK;
+ uint8_t acpi_cntl = pci_get_long(lpc->d.config + ICH9_LPC_ACPI_CTRL);
+ uint8_t new_gsi;
+
+ if (acpi_cntl & ICH9_LPC_ACPI_CTRL_ACPI_EN) {
+ pm_io_base &= ICH9_LPC_PMBASE_BASE_ADDRESS_MASK;
+ } else {
+ pm_io_base = 0;
+ }
ich9_pm_iospace_update(&lpc->pm, pm_io_base);
+
+ new_gsi = ich9_lpc_sci_irq(lpc);
+ if (lpc->sci_level && new_gsi != lpc->sci_gsi) {
+ qemu_set_irq(lpc->pm.irq, 0);
+ lpc->sci_gsi = new_gsi;
+ qemu_set_irq(lpc->pm.irq, 1);
+ }
+ lpc->sci_gsi = new_gsi;
}
/* config:RCBA */
@@ -445,7 +449,7 @@ static int ich9_lpc_post_load(void *opaque, int version_id)
{
ICH9LPCState *lpc = opaque;
- ich9_lpc_pmbase_update(lpc);
+ ich9_lpc_pmbase_sci_update(lpc);
ich9_lpc_rcba_update(lpc, 0 /* disabled ICH9_LPC_RCBA_EN */);
ich9_lpc_pmcon_update(lpc);
return 0;
@@ -458,8 +462,9 @@ static void ich9_lpc_config_write(PCIDevice *d,
uint32_t rcba_old = pci_get_long(d->config + ICH9_LPC_RCBA);
pci_default_write_config(d, addr, val, len);
- if (ranges_overlap(addr, len, ICH9_LPC_PMBASE, 4)) {
- ich9_lpc_pmbase_update(lpc);
+ if (ranges_overlap(addr, len, ICH9_LPC_PMBASE, 4) ||
+ ranges_overlap(addr, len, ICH9_LPC_ACPI_CTRL, 1)) {
+ ich9_lpc_pmbase_sci_update(lpc);
}
if (ranges_overlap(addr, len, ICH9_LPC_RCBA, 4)) {
ich9_lpc_rcba_update(lpc, rcba_old);
@@ -497,7 +502,7 @@ static void ich9_lpc_reset(DeviceState *qdev)
ich9_cc_reset(lpc);
- ich9_lpc_pmbase_update(lpc);
+ ich9_lpc_pmbase_sci_update(lpc);
ich9_lpc_rcba_update(lpc, rcba_old);
lpc->sci_level = 0;
@@ -577,7 +582,7 @@ static void ich9_lpc_get_sci_int(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(obj);
- uint32_t value = ich9_lpc_sci_irq(lpc);
+ uint32_t value = lpc->sci_gsi;
visit_type_uint32(v, name, &value, errp);
}
@@ -608,6 +613,7 @@ static void ich9_lpc_initfn(Object *obj)
static void ich9_lpc_realize(PCIDevice *d, Error **errp)
{
ICH9LPCState *lpc = ICH9_LPC_DEVICE(d);
+ DeviceState *dev = DEVICE(d);
ISABus *isa_bus;
isa_bus = isa_bus_new(DEVICE(d), get_system_memory(), get_system_io(),
@@ -618,6 +624,9 @@ static void ich9_lpc_realize(PCIDevice *d, Error **errp)
pci_set_long(d->wmask + ICH9_LPC_PMBASE,
ICH9_LPC_PMBASE_BASE_ADDRESS_MASK);
+ pci_set_byte(d->wmask + ICH9_LPC_PMBASE,
+ ICH9_LPC_ACPI_CTRL_ACPI_EN |
+ ICH9_LPC_ACPI_CTRL_SCI_IRQ_SEL_MASK);
memory_region_init_io(&lpc->rcrb_mem, OBJECT(d), &rcrb_mmio_ops, lpc,
"lpc-rcrb-mmio", ICH9_CC_SIZE);
@@ -635,6 +644,10 @@ static void ich9_lpc_realize(PCIDevice *d, Error **errp)
memory_region_add_subregion_overlap(pci_address_space_io(d),
ICH9_RST_CNT_IOPORT, &lpc->rst_cnt_mem,
1);
+
+ qdev_init_gpio_out_named(dev, lpc->gsi, ICH9_GPIO_GSI, GSI_NUM_PINS);
+
+ isa_bus_irqs(isa_bus, lpc->gsi);
}
static bool ich9_rst_cnt_needed(void *opaque)
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-30 19:34:28 +0000