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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 15/15] xen: Add a Xen specific ACPI Implementation to target-xen
From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Xen currently uses a different BIOS (hvmloader + rombios) therefore the
Qemu acpi_piix4 implementation wouldn't work correctly with Xen.
We plan on fixing this properly but at the moment we are just adding a
new Xen specific acpi_piix4 implementation.
This patch is optional; without it the VM boots but it cannot shutdown
properly or go to S3.
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
Makefile.target | 1 +
hw/xen_acpi_piix4.c | 424 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/xen_common.h | 3 +
hw/xen_machine_fv.c | 6 +-
4 files changed, 429 insertions(+), 5 deletions(-)
create mode 100644 hw/xen_acpi_piix4.c
diff --git a/Makefile.target b/Makefile.target
index 840b87b..e815937 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -328,6 +328,7 @@ obj-xen-y += piix_pci.o
obj-xen-y += mc146818rtc.o
obj-xen-y += xenstore.o
obj-xen-y += xen_platform.o
+obj-xen-y += xen_acpi_piix4.o
obj-xen-y += xen_mapcache.o
obj-xen-y += stub-functions.o
diff --git a/hw/xen_acpi_piix4.c b/hw/xen_acpi_piix4.c
new file mode 100644
index 0000000..3c65963
--- /dev/null
+++ b/hw/xen_acpi_piix4.c
@@ -0,0 +1,424 @@
+ /*
+ * PIIX4 ACPI controller emulation
+ *
+ * Winston liwen Wang, winston.l.wang@xxxxxxxxx
+ * Copyright (c) 2006 , Intel Corporation.
+ *
+ * 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 "hw.h"
+#include "pc.h"
+#include "pci.h"
+#include "sysemu.h"
+#include "acpi.h"
+
+#include "xen_backend.h"
+#include "xen_common.h"
+#include "qemu-log.h"
+
+#include <xen/hvm/ioreq.h>
+#include <xen/hvm/params.h>
+
+#define PIIX4ACPI_LOG_ERROR 0
+#define PIIX4ACPI_LOG_INFO 1
+#define PIIX4ACPI_LOG_DEBUG 2
+#define PIIX4ACPI_LOGLEVEL PIIX4ACPI_LOG_INFO
+#define PIIX4ACPI_LOG(level, fmt, ...) do { if (level <= PIIX4ACPI_LOGLEVEL)
qemu_log(fmt, ## __VA_ARGS__); } while (0)
+
+/* Sleep state type codes as defined by the \_Sx objects in the DSDT. */
+/* These must be kept in sync with the DSDT (hvmloader/acpi/dsdt.asl) */
+#define SLP_TYP_S4 (6 << 10)
+#define SLP_TYP_S3 (5 << 10)
+#define SLP_TYP_S5 (7 << 10)
+
+#define ACPI_DBG_IO_ADDR 0xb044
+#define ACPI_PHP_IO_ADDR 0x10c0
+
+#define PHP_EVT_ADD 0x0
+#define PHP_EVT_REMOVE 0x3
+
+/* The bit in GPE0_STS/EN to notify the pci hotplug event */
+#define ACPI_PHP_GPE_BIT 3
+
+#define DEVFN_TO_PHP_SLOT_REG(devfn) (devfn >> 1)
+#define PHP_SLOT_REG_TO_DEVFN(reg, hilo) ((reg << 1) | hilo)
+
+/* ioport to monitor cpu add/remove status */
+#define PROC_BASE 0xaf00
+
+typedef struct PCIAcpiState {
+ PCIDevice dev;
+ uint16_t pm1_control; /* pm1a_ECNT_BLK */
+ qemu_irq irq;
+ qemu_irq cmos_s3;
+} PCIAcpiState;
+
+typedef struct GPEState {
+ /* GPE0 block */
+ uint8_t gpe0_sts[ACPI_GPE0_BLK_LEN / 2];
+ uint8_t gpe0_en[ACPI_GPE0_BLK_LEN / 2];
+
+ /* CPU bitmap */
+ uint8_t cpus_sts[32];
+
+ /* SCI IRQ level */
+ uint8_t sci_asserted;
+
+} GPEState;
+
+static GPEState gpe_state;
+
+static qemu_irq sci_irq;
+
+typedef struct AcpiDeviceState AcpiDeviceState;
+AcpiDeviceState *acpi_device_table;
+
+static const VMStateDescription vmstate_acpi = {
+ .name = "PIIX4 ACPI",
+ .version_id = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_PCI_DEVICE(dev, PCIAcpiState),
+ VMSTATE_UINT16(pm1_control, PCIAcpiState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void acpiPm1Control_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ PCIAcpiState *s = opaque;
+ s->pm1_control = (s->pm1_control & 0xff00) | (val & 0xff);
+}
+
+static uint32_t acpiPm1Control_readb(void *opaque, uint32_t addr)
+{
+ PCIAcpiState *s = opaque;
+ /* Mask out the write-only bits */
+ return (uint8_t)(s->pm1_control &
~(ACPI_BITMASK_GLOBAL_LOCK_RELEASE|ACPI_BITMASK_SLEEP_ENABLE));
+}
+
+static void acpi_shutdown(PCIAcpiState *s, uint32_t val)
+{
+ if (!(val & ACPI_BITMASK_SLEEP_ENABLE))
+ return;
+
+ switch (val & ACPI_BITMASK_SLEEP_TYPE) {
+ case SLP_TYP_S3:
+ qemu_system_reset();
+ qemu_irq_raise(s->cmos_s3);
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
+ break;
+ case SLP_TYP_S4:
+ case SLP_TYP_S5:
+ qemu_system_shutdown_request();
+ break;
+ default:
+ break;
+ }
+}
+
+static void acpiPm1ControlP1_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ PCIAcpiState *s = opaque;
+
+ val <<= 8;
+ s->pm1_control = ((s->pm1_control & 0xff) | val) &
~ACPI_BITMASK_SLEEP_ENABLE;
+
+ acpi_shutdown(s, val);
+}
+
+static uint32_t acpiPm1ControlP1_readb(void *opaque, uint32_t addr)
+{
+ PCIAcpiState *s = opaque;
+ /* Mask out the write-only bits */
+ return (uint8_t)((s->pm1_control &
~(ACPI_BITMASK_GLOBAL_LOCK_RELEASE|ACPI_BITMASK_SLEEP_ENABLE)) >> 8);
+}
+
+static void acpiPm1Control_writew(void *opaque, uint32_t addr, uint32_t val)
+{
+ PCIAcpiState *s = opaque;
+
+ s->pm1_control = val & ~ACPI_BITMASK_SLEEP_ENABLE;
+
+ acpi_shutdown(s, val);
+}
+
+static uint32_t acpiPm1Control_readw(void *opaque, uint32_t addr)
+{
+ PCIAcpiState *s = opaque;
+ /* Mask out the write-only bits */
+ return (s->pm1_control &
~(ACPI_BITMASK_GLOBAL_LOCK_RELEASE|ACPI_BITMASK_SLEEP_ENABLE));
+}
+
+static void acpi_map(PCIDevice *pci_dev, int region_num,
+ uint32_t addr, uint32_t size, int type)
+{
+ PCIAcpiState *d = (PCIAcpiState *)pci_dev;
+
+ /* Byte access */
+ register_ioport_write(addr + 4, 1, 1, acpiPm1Control_writeb, d);
+ register_ioport_read(addr + 4, 1, 1, acpiPm1Control_readb, d);
+ register_ioport_write(addr + 4 + 1, 1, 1, acpiPm1ControlP1_writeb, d);
+ register_ioport_read(addr + 4 +1, 1, 1, acpiPm1ControlP1_readb, d);
+
+ /* Word access */
+ register_ioport_write(addr + 4, 2, 2, acpiPm1Control_writew, d);
+ register_ioport_read(addr + 4, 2, 2, acpiPm1Control_readw, d);
+}
+
+static inline int test_bit(uint8_t *map, int bit)
+{
+ return ( map[bit / 8] & (1 << (bit % 8)) );
+}
+
+static inline void set_bit(uint8_t *map, int bit)
+{
+ map[bit / 8] |= (1 << (bit % 8));
+}
+
+static inline void clear_bit(uint8_t *map, int bit)
+{
+ map[bit / 8] &= ~(1 << (bit % 8));
+}
+
+static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val)
+{
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_DEBUG, "ACPI: DBG: 0x%08x\n", val);
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_INFO, "ACPI:debug: write addr=0x%x,
val=0x%x.\n", addr, val);
+}
+
+/* GPEx_STS occupy 1st half of the block, while GPEx_EN 2nd half */
+static uint32_t gpe_sts_read(void *opaque, uint32_t addr)
+{
+ GPEState *s = opaque;
+
+ return s->gpe0_sts[addr - ACPI_GPE0_BLK_ADDRESS];
+}
+
+/* write 1 to clear specific GPE bits */
+static void gpe_sts_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ GPEState *s = opaque;
+ int hotplugged = 0;
+
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_DEBUG, "gpe_sts_write: addr=0x%x,
val=0x%x.\n", addr, val);
+
+ hotplugged = test_bit(&s->gpe0_sts[0], ACPI_PHP_GPE_BIT);
+ s->gpe0_sts[addr - ACPI_GPE0_BLK_ADDRESS] &= ~val;
+ if ( s->sci_asserted &&
+ hotplugged &&
+ !test_bit(&s->gpe0_sts[0], ACPI_PHP_GPE_BIT)) {
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_INFO, "Clear the GPE0_STS bit for ACPI
hotplug & deassert the IRQ.\n");
+ qemu_irq_lower(sci_irq);
+ }
+
+}
+
+static uint32_t gpe_en_read(void *opaque, uint32_t addr)
+{
+ GPEState *s = opaque;
+
+ return s->gpe0_en[addr - (ACPI_GPE0_BLK_ADDRESS + ACPI_GPE0_BLK_LEN / 2)];
+}
+
+/* write 0 to clear en bit */
+static void gpe_en_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ GPEState *s = opaque;
+ int reg_count;
+
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_DEBUG, "gpe_en_write: addr=0x%x, val=0x%x.\n",
addr, val);
+ reg_count = addr - (ACPI_GPE0_BLK_ADDRESS + ACPI_GPE0_BLK_LEN / 2);
+ s->gpe0_en[reg_count] = val;
+ /* If disable GPE bit right after generating SCI on it,
+ * need deassert the intr to avoid redundant intrs
+ */
+ if ( s->sci_asserted &&
+ reg_count == (ACPI_PHP_GPE_BIT / 8) &&
+ !(val & (1 << (ACPI_PHP_GPE_BIT % 8))) ) {
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_INFO, "deassert due to disable GPE
bit.\n");
+ s->sci_asserted = 0;
+ qemu_irq_lower(sci_irq);
+ }
+
+}
+
+static void gpe_save(QEMUFile* f, void* opaque)
+{
+ GPEState *s = (GPEState*)opaque;
+ int i;
+
+ for ( i = 0; i < ACPI_GPE0_BLK_LEN / 2; i++ ) {
+ qemu_put_8s(f, &s->gpe0_sts[i]);
+ qemu_put_8s(f, &s->gpe0_en[i]);
+ }
+
+ qemu_put_8s(f, &s->sci_asserted);
+ if ( s->sci_asserted ) {
+ PIIX4ACPI_LOG(PIIX4ACPI_LOG_INFO, "gpe_save with sci asserted!\n");
+ }
+}
+
+static int gpe_load(QEMUFile* f, void* opaque, int version_id)
+{
+ GPEState *s = (GPEState*)opaque;
+ int i;
+ if (version_id != 1)
+ return -EINVAL;
+
+ for ( i = 0; i < ACPI_GPE0_BLK_LEN / 2; i++ ) {
+ qemu_get_8s(f, &s->gpe0_sts[i]);
+ qemu_get_8s(f, &s->gpe0_en[i]);
+ }
+
+ qemu_get_8s(f, &s->sci_asserted);
+ return 0;
+}
+
+static uint32_t gpe_cpus_readb(void *opaque, uint32_t addr)
+{
+ uint32_t val = 0;
+ GPEState *g = opaque;
+
+ switch (addr) {
+ case PROC_BASE ... PROC_BASE+31:
+ val = g->cpus_sts[addr - PROC_BASE];
+ default:
+ break;
+ }
+
+ return val;
+}
+
+static void gpe_cpus_writeb(void *opaque, uint32_t addr, uint32_t val)
+{
+ /* GPEState *g = opaque; */
+
+ switch (addr) {
+ case PROC_BASE ... PROC_BASE + 31:
+ /* don't allow to change cpus_sts from inside a guest */
+ break;
+ default:
+ break;
+ }
+}
+
+static void gpe_acpi_init(void)
+{
+ GPEState *s = &gpe_state;
+ memset(s, 0, sizeof(GPEState));
+
+ s->cpus_sts[0] = 1;
+
+ register_ioport_read(PROC_BASE, 32, 1, gpe_cpus_readb, s);
+ register_ioport_write(PROC_BASE, 32, 1, gpe_cpus_writeb, s);
+
+ register_ioport_read(ACPI_GPE0_BLK_ADDRESS,
+ ACPI_GPE0_BLK_LEN / 2,
+ 1,
+ gpe_sts_read,
+ s);
+ register_ioport_read(ACPI_GPE0_BLK_ADDRESS + ACPI_GPE0_BLK_LEN / 2,
+ ACPI_GPE0_BLK_LEN / 2,
+ 1,
+ gpe_en_read,
+ s);
+
+ register_ioport_write(ACPI_GPE0_BLK_ADDRESS,
+ ACPI_GPE0_BLK_LEN / 2,
+ 1,
+ gpe_sts_write,
+ s);
+ register_ioport_write(ACPI_GPE0_BLK_ADDRESS + ACPI_GPE0_BLK_LEN / 2,
+ ACPI_GPE0_BLK_LEN / 2,
+ 1,
+ gpe_en_write,
+ s);
+
+ register_savevm(NULL, "gpe", 0, 1, gpe_save, gpe_load, s);
+}
+
+static int piix4_pm_xen_initfn(PCIDevice *dev)
+{
+ PCIAcpiState *s = DO_UPCAST(PCIAcpiState, dev, dev);
+ uint8_t *pci_conf;
+
+ pci_conf = s->dev.config;
+ pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
+ pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82371AB_3);
+ pci_conf[0x08] = 0x01; /* B0 stepping */
+ pci_conf[0x09] = 0x00; /* base class */
+ pci_config_set_class(pci_conf, PCI_CLASS_BRIDGE_OTHER);
+ pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; /* header_type */
+ pci_conf[0x3d] = 0x01; /* Hardwired to PIRQA is used */
+
+ /* PMBA POWER MANAGEMENT BASE ADDRESS, hardcoded to 0x1f40
+ * to make shutdown work for IPF, due to IPF Guest Firmware
+ * will enumerate pci devices.
+ *
+ * TODO: if Guest Firmware or Guest OS will change this PMBA,
+ * More logic will be added.
+ */
+ pci_conf[0x40] = 0x41; /* Special device-specific BAR at 0x40 */
+ pci_conf[0x41] = 0x1f;
+ pci_conf[0x42] = 0x00;
+ pci_conf[0x43] = 0x00;
+
+ s->pm1_control = ACPI_BITMASK_SCI_ENABLE;
+
+ acpi_map((PCIDevice *)s, 0, 0x1f40, 0x10, PCI_BASE_ADDRESS_SPACE_IO);
+
+ gpe_acpi_init();
+
+ register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
+
+ return 0;
+}
+
+void piix4_pm_xen_init(PCIBus *bus, int devfn, qemu_irq sci_irq_spec, qemu_irq
cmos_s3)
+{
+ PCIDevice *dev;
+ PCIAcpiState *s;
+
+ sci_irq = sci_irq_spec;
+
+ dev = pci_create(bus, devfn, "PIIX4 ACPI");
+
+ s = DO_UPCAST(PCIAcpiState, dev, dev);
+
+ s->irq = sci_irq_spec;
+ s->cmos_s3 = cmos_s3;
+
+ qdev_init_nofail(&dev->qdev);
+}
+
+static PCIDeviceInfo piix4_pm_xen_info = {
+ .qdev.name = "PIIX4 ACPI",
+ .qdev.desc = "dm",
+ .qdev.size = sizeof(PCIAcpiState),
+ .qdev.vmsd = &vmstate_acpi,
+ .init = piix4_pm_xen_initfn,
+};
+
+static void piix4_pm_xen_register(void)
+{
+ pci_qdev_register(&piix4_pm_xen_info);
+}
+
+device_init(piix4_pm_xen_register);
diff --git a/hw/xen_common.h b/hw/xen_common.h
index c49358c..cd62097 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -55,4 +55,7 @@ typedef xc_interface *qemu_xc_interface;
/* hw/i8259-xen-stub.c */
qemu_irq *i8259_xen_init(void);
+/* hw/xen_acpi_piix4.c */
+void piix4_pm_xen_init(PCIBus *bus, int devfn, qemu_irq sci_irq_spec, qemu_irq
cmos_s3);
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index cb40d22..5132c97 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -65,7 +65,6 @@ static void xen_init_fv(ram_addr_t ram_size,
qemu_irq *isa_irq;
qemu_irq *i8259;
qemu_irq *cmos_s3;
- qemu_irq *smi_irq;
IsaIrqState *isa_irq_state;
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
FDCtrl *floppy_controller;
@@ -173,10 +172,7 @@ static void xen_init_fv(ram_addr_t ram_size,
if (acpi_enabled) {
cmos_s3 = qemu_allocate_irqs(pc_cmos_set_s3_resume, rtc_state, 1);
- smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
- piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
- isa_reserve_irq(9), *cmos_s3, *smi_irq,
- 0);
+ piix4_pm_xen_init(pci_bus, piix3_devfn + 3, isa_reserve_irq(9),
*cmos_s3);
}
if (i440fx_state) {
--
1.7.0.4
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