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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 6/6] ioreq-server: bring the PCI hotplug controller implementation into Xen
Because we may now have more than one emulator, the implementation of the
PCI hotplug controller needs to be done by Xen. Happily the code is very
short and simple and it also removes the need for a different ACPI DSDT
when using different variants of QEMU.
Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
---
tools/firmware/hvmloader/acpi/mk_dsdt.c | 147 ++++------------------
tools/libxc/xc_domain.c | 46 +++++++
tools/libxc/xenctrl.h | 11 ++
tools/libxl/libxl_pci.c | 15 +++
xen/arch/x86/hvm/Makefile | 1 +
xen/arch/x86/hvm/hotplug.c | 207 +++++++++++++++++++++++++++++++
xen/arch/x86/hvm/hvm.c | 40 +++++-
xen/include/asm-x86/hvm/domain.h | 12 ++
xen/include/asm-x86/hvm/io.h | 6 +
xen/include/public/hvm/hvm_op.h | 9 ++
xen/include/public/hvm/ioreq.h | 2 +
11 files changed, 373 insertions(+), 123 deletions(-)
create mode 100644 xen/arch/x86/hvm/hotplug.c
diff --git a/tools/firmware/hvmloader/acpi/mk_dsdt.c
b/tools/firmware/hvmloader/acpi/mk_dsdt.c
index a4b693b..6408b44 100644
--- a/tools/firmware/hvmloader/acpi/mk_dsdt.c
+++ b/tools/firmware/hvmloader/acpi/mk_dsdt.c
@@ -58,28 +58,6 @@ static void pop_block(void)
printf("}\n");
}
-static void pci_hotplug_notify(unsigned int slt)
-{
- stmt("Notify", "\\_SB.PCI0.S%02X, EVT", slt);
-}
-
-static void decision_tree(
- unsigned int s, unsigned int e, char *var, void (*leaf)(unsigned int))
-{
- if ( s == (e-1) )
- {
- (*leaf)(s);
- return;
- }
-
- push_block("If", "And(%s, 0x%02x)", var, (e-s)/2);
- decision_tree((s+e)/2, e, var, leaf);
- pop_block();
- push_block("Else", NULL);
- decision_tree(s, (s+e)/2, var, leaf);
- pop_block();
-}
-
static struct option options[] = {
{ "maxcpu", 1, 0, 'c' },
{ "dm-version", 1, 0, 'q' },
@@ -322,64 +300,21 @@ int main(int argc, char **argv)
dev, intx, ((dev*4+dev/8+intx)&31)+16);
printf("})\n");
- /*
- * Each PCI hotplug slot needs at least two methods to handle
- * the ACPI event:
- * _EJ0: eject a device
- * _STA: return a device's status, e.g. enabled or removed
- *
- * Eject button would generate a general-purpose event, then the
- * control method for this event uses Notify() to inform OSPM which
- * action happened and on which device.
- *
- * Pls. refer "6.3 Device Insertion, Removal, and Status Objects"
- * in ACPI spec 3.0b for details.
- *
- * QEMU provides a simple hotplug controller with some I/O to handle
- * the hotplug action and status, which is beyond the ACPI scope.
- */
- if (dm_version == QEMU_XEN_TRADITIONAL) {
- for ( slot = 0; slot < 0x100; slot++ )
- {
- push_block("Device", "S%02X", slot);
- /* _ADR == dev:fn (16:16) */
- stmt("Name", "_ADR, 0x%08x", ((slot & ~7) << 13) | (slot & 7));
- /* _SUN == dev */
- stmt("Name", "_SUN, 0x%08x", slot >> 3);
- push_block("Method", "_EJ0, 1");
- stmt("Store", "0x%02x, \\_GPE.DPT1", slot);
- stmt("Store", "0x88, \\_GPE.DPT2");
- stmt("Store", "0x%02x, \\_GPE.PH%02X", /* eject */
- (slot & 1) ? 0x10 : 0x01, slot & ~1);
- pop_block();
- push_block("Method", "_STA, 0");
- stmt("Store", "0x%02x, \\_GPE.DPT1", slot);
- stmt("Store", "0x89, \\_GPE.DPT2");
- if ( slot & 1 )
- stmt("ShiftRight", "0x4, \\_GPE.PH%02X, Local1", slot & ~1);
- else
- stmt("And", "\\_GPE.PH%02X, 0x0f, Local1", slot & ~1);
- stmt("Return", "Local1"); /* IN status as the _STA */
- pop_block();
- pop_block();
- }
- } else {
- stmt("OperationRegion", "SEJ, SystemIO, 0xae08, 0x04");
- push_block("Field", "SEJ, DWordAcc, NoLock, WriteAsZeros");
- indent(); printf("B0EJ, 32,\n");
- pop_block();
+ stmt("OperationRegion", "SEJ, SystemIO, 0xae08, 0x04");
+ push_block("Field", "SEJ, DWordAcc, NoLock, WriteAsZeros");
+ indent(); printf("B0EJ, 32,\n");
+ pop_block();
- /* hotplug_slot */
- for (slot = 1; slot <= 31; slot++) {
- push_block("Device", "S%i", slot); {
- stmt("Name", "_ADR, %#06x0000", slot);
- push_block("Method", "_EJ0,1"); {
- stmt("Store", "ShiftLeft(1, %#06x), B0EJ", slot);
- stmt("Return", "0x0");
- } pop_block();
- stmt("Name", "_SUN, %i", slot);
+ /* hotplug_slot */
+ for (slot = 1; slot <= 31; slot++) {
+ push_block("Device", "S%i", slot); {
+ stmt("Name", "_ADR, %#06x0000", slot);
+ push_block("Method", "_EJ0,1"); {
+ stmt("Store", "ShiftLeft(1, %#06x), B0EJ", slot);
+ stmt("Return", "0x0");
} pop_block();
- }
+ stmt("Name", "_SUN, %i", slot);
+ } pop_block();
}
pop_block();
@@ -389,26 +324,11 @@ int main(int argc, char **argv)
/**** GPE start ****/
push_block("Scope", "\\_GPE");
- if (dm_version == QEMU_XEN_TRADITIONAL) {
- stmt("OperationRegion", "PHP, SystemIO, 0x10c0, 0x82");
-
- push_block("Field", "PHP, ByteAcc, NoLock, Preserve");
- indent(); printf("PSTA, 8,\n"); /* hotplug controller event reg */
- indent(); printf("PSTB, 8,\n"); /* hotplug controller slot reg */
- for ( slot = 0; slot < 0x100; slot += 2 )
- {
- indent();
- /* Each hotplug control register manages a pair of pci functions.
*/
- printf("PH%02X, 8,\n", slot);
- }
- pop_block();
- } else {
- stmt("OperationRegion", "PCST, SystemIO, 0xae00, 0x08");
- push_block("Field", "PCST, DWordAcc, NoLock, WriteAsZeros");
- indent(); printf("PCIU, 32,\n");
- indent(); printf("PCID, 32,\n");
- pop_block();
- }
+ stmt("OperationRegion", "PCST, SystemIO, 0xae00, 0x08");
+ push_block("Field", "PCST, DWordAcc, NoLock, WriteAsZeros");
+ indent(); printf("PCIU, 32,\n");
+ indent(); printf("PCID, 32,\n");
+ pop_block();
stmt("OperationRegion", "DG1, SystemIO, 0xb044, 0x04");
@@ -416,33 +336,16 @@ int main(int argc, char **argv)
indent(); printf("DPT1, 8, DPT2, 8\n");
pop_block();
- if (dm_version == QEMU_XEN_TRADITIONAL) {
- push_block("Method", "_L03, 0, Serialized");
- /* Detect slot and event (remove/add). */
- stmt("Name", "SLT, 0x0");
- stmt("Name", "EVT, 0x0");
- stmt("Store", "PSTA, Local1");
- stmt("And", "Local1, 0xf, EVT");
- stmt("Store", "PSTB, Local1"); /* XXX: Store (PSTB, SLT) ? */
- stmt("And", "Local1, 0xff, SLT");
- /* Debug */
- stmt("Store", "SLT, DPT1");
- stmt("Store", "EVT, DPT2");
- /* Decision tree */
- decision_tree(0x00, 0x100, "SLT", pci_hotplug_notify);
+ push_block("Method", "_E01");
+ for (slot = 1; slot <= 31; slot++) {
+ push_block("If", "And(PCIU, ShiftLeft(1, %i))", slot);
+ stmt("Notify", "\\_SB.PCI0.S%i, 1", slot);
pop_block();
- } else {
- push_block("Method", "_E01");
- for (slot = 1; slot <= 31; slot++) {
- push_block("If", "And(PCIU, ShiftLeft(1, %i))", slot);
- stmt("Notify", "\\_SB.PCI0.S%i, 1", slot);
- pop_block();
- push_block("If", "And(PCID, ShiftLeft(1, %i))", slot);
- stmt("Notify", "\\_SB.PCI0.S%i, 3", slot);
- pop_block();
- }
+ push_block("If", "And(PCID, ShiftLeft(1, %i))", slot);
+ stmt("Notify", "\\_SB.PCI0.S%i, 3", slot);
pop_block();
}
+ pop_block();
pop_block();
/**** GPE end ****/
diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c
index dfa905b..5b49316 100644
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -1459,6 +1459,52 @@ int xc_hvm_destroy_ioreq_server(xc_interface *xch,
return rc;
}
+int xc_hvm_pci_hotplug_enable(xc_interface *xch,
+ domid_t domid,
+ uint32_t slot)
+{
+ DECLARE_HYPERCALL;
+ DECLARE_HYPERCALL_BUFFER(xen_hvm_pci_hotplug_t, arg);
+ int rc;
+
+ arg = xc_hypercall_buffer_alloc(xch, arg, sizeof(*arg));
+ if ( arg == NULL )
+ return -1;
+
+ hypercall.op = __HYPERVISOR_hvm_op;
+ hypercall.arg[0] = HVMOP_pci_hotplug;
+ hypercall.arg[1] = HYPERCALL_BUFFER_AS_ARG(arg);
+ arg->domid = domid;
+ arg->enable = 1;
+ arg->slot = slot;
+ rc = do_xen_hypercall(xch, &hypercall);
+ xc_hypercall_buffer_free(xch, arg);
+ return rc;
+}
+
+int xc_hvm_pci_hotplug_disable(xc_interface *xch,
+ domid_t domid,
+ uint32_t slot)
+{
+ DECLARE_HYPERCALL;
+ DECLARE_HYPERCALL_BUFFER(xen_hvm_pci_hotplug_t, arg);
+ int rc;
+
+ arg = xc_hypercall_buffer_alloc(xch, arg, sizeof(*arg));
+ if ( arg == NULL )
+ return -1;
+
+ hypercall.op = __HYPERVISOR_hvm_op;
+ hypercall.arg[0] = HVMOP_pci_hotplug;
+ hypercall.arg[1] = HYPERCALL_BUFFER_AS_ARG(arg);
+ arg->domid = domid;
+ arg->enable = 0;
+ arg->slot = slot;
+ rc = do_xen_hypercall(xch, &hypercall);
+ xc_hypercall_buffer_free(xch, arg);
+ return rc;
+}
+
int xc_domain_setdebugging(xc_interface *xch,
uint32_t domid,
unsigned int enable)
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h
index 84cab13..b9c9849 100644
--- a/tools/libxc/xenctrl.h
+++ b/tools/libxc/xenctrl.h
@@ -1842,6 +1842,17 @@ int xc_hvm_destroy_ioreq_server(xc_interface *xch,
domid_t domid,
ioservid_t id);
+/*
+ * PCI hotplug API
+ */
+int xc_hvm_pci_hotplug_enable(xc_interface *xch,
+ domid_t domid,
+ uint32_t slot);
+
+int xc_hvm_pci_hotplug_disable(xc_interface *xch,
+ domid_t domid,
+ uint32_t slot);
+
/* HVM guest pass-through */
int xc_assign_device(xc_interface *xch,
uint32_t domid,
diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
index 2e52470..4176440 100644
--- a/tools/libxl/libxl_pci.c
+++ b/tools/libxl/libxl_pci.c
@@ -867,6 +867,13 @@ static int do_pci_add(libxl__gc *gc, uint32_t domid,
libxl_device_pci *pcidev, i
}
if ( rc )
return ERROR_FAIL;
+
+ rc = xc_hvm_pci_hotplug_enable(ctx->xch, domid, pcidev->dev);
+ if (rc < 0) {
+ LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR, "Error:
xc_hvm_pci_hotplug_enable failed");
+ return ERROR_FAIL;
+ }
+
break;
case LIBXL_DOMAIN_TYPE_PV:
{
@@ -1182,6 +1189,14 @@ static int do_pci_remove(libxl__gc *gc, uint32_t domid,
NULL, NULL, NULL) < 0)
goto out_fail;
+ rc = xc_hvm_pci_hotplug_disable(ctx->xch, domid, pcidev->dev);
+ if (rc < 0) {
+ LIBXL__LOG_ERRNO(ctx, LIBXL__LOG_ERROR,
+ "Error: xc_hvm_pci_hotplug_disable failed");
+ rc = ERROR_FAIL;
+ goto out_fail;
+ }
+
switch (libxl__device_model_version_running(gc, domid)) {
case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL:
rc = qemu_pci_remove_xenstore(gc, domid, pcidev, force);
diff --git a/xen/arch/x86/hvm/Makefile b/xen/arch/x86/hvm/Makefile
index eea5555..48efddb 100644
--- a/xen/arch/x86/hvm/Makefile
+++ b/xen/arch/x86/hvm/Makefile
@@ -3,6 +3,7 @@ subdir-y += vmx
obj-y += asid.o
obj-y += emulate.o
+obj-y += hotplug.o
obj-y += hpet.o
obj-y += hvm.o
obj-y += i8254.o
diff --git a/xen/arch/x86/hvm/hotplug.c b/xen/arch/x86/hvm/hotplug.c
new file mode 100644
index 0000000..cd3a5b3
--- /dev/null
+++ b/xen/arch/x86/hvm/hotplug.c
@@ -0,0 +1,207 @@
+/*
+ * hvm/hotplug.c
+ *
+ * Copyright (c) 2014, Citrix Systems Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <xen/types.h>
+#include <xen/spinlock.h>
+#include <xen/xmalloc.h>
+#include <asm/hvm/io.h>
+#include <asm/hvm/support.h>
+
+#define SCI_IRQ 9
+
+#define GPE_BASE (ACPI_GPE0_BLK_ADDRESS_V1)
+#define GPE_LEN (ACPI_GPE0_BLK_LEN_V1)
+
+#define GPE_PCI_HOTPLUG_STATUS 2
+
+#define PCI_HOTPLUG_BASE (ACPI_PCI_HOTPLUG_ADDRESS_V1)
+#define PCI_HOTPLUG_LEN (ACPI_PCI_HOTPLUG_LEN_V1)
+
+#define PCI_UP 0
+#define PCI_DOWN 4
+#define PCI_EJECT 8
+
+static void gpe_update_sci(struct hvm_hotplug *hp)
+{
+ if ( (hp->gpe_sts[0] & hp->gpe_en[0]) & GPE_PCI_HOTPLUG_STATUS )
+ hvm_isa_irq_assert(hp->domain, SCI_IRQ);
+ else
+ hvm_isa_irq_deassert(hp->domain, SCI_IRQ);
+}
+
+static int handle_gpe_io(
+ int dir, uint32_t port, uint32_t bytes, uint32_t *val)
+{
+ struct vcpu *v = current;
+ struct domain *d = v->domain;
+ struct hvm_hotplug *hp = &d->arch.hvm_domain.hotplug;
+
+ if ( bytes != 1 )
+ {
+ gdprintk(XENLOG_WARNING, "%s: bad access\n", __func__);
+ goto done;
+ }
+
+ port -= GPE_BASE;
+
+ if ( dir == IOREQ_READ )
+ {
+ if ( port < GPE_LEN / 2 )
+ {
+ *val = hp->gpe_sts[port];
+ }
+ else
+ {
+ port -= GPE_LEN / 2;
+ *val = hp->gpe_en[port];
+ }
+ } else {
+ if ( port < GPE_LEN / 2 )
+ {
+ hp->gpe_sts[port] &= ~*val;
+ }
+ else
+ {
+ port -= GPE_LEN / 2;
+ hp->gpe_en[port] = *val;
+ }
+
+ gpe_update_sci(hp);
+ }
+
+done:
+ return X86EMUL_OKAY;
+}
+
+static void pci_hotplug_eject(struct hvm_hotplug *hp, uint32_t mask)
+{
+ int slot = ffs(mask) - 1;
+
+ gdprintk(XENLOG_INFO, "%s: %d\n", __func__, slot);
+
+ hp->slot_down &= ~(1u << slot);
+ hp->slot_up &= ~(1u << slot);
+}
+
+static int handle_pci_hotplug_io(
+ int dir, uint32_t port, uint32_t bytes, uint32_t *val)
+{
+ struct vcpu *v = current;
+ struct domain *d = v->domain;
+ struct hvm_hotplug *hp = &d->arch.hvm_domain.hotplug;
+
+ if ( bytes != 4 )
+ {
+ gdprintk(XENLOG_WARNING, "%s: bad access\n", __func__);
+ goto done;
+ }
+
+ port -= PCI_HOTPLUG_BASE;
+
+ if ( dir == IOREQ_READ )
+ {
+ switch ( port )
+ {
+ case PCI_UP:
+ *val = hp->slot_up;
+ break;
+ case PCI_DOWN:
+ *val = hp->slot_down;
+ break;
+ default:
+ break;
+ }
+ }
+ else
+ {
+ switch ( port )
+ {
+ case PCI_EJECT:
+ pci_hotplug_eject(hp, *val);
+ break;
+ default:
+ break;
+ }
+ }
+
+done:
+ return X86EMUL_OKAY;
+}
+
+void pci_hotplug(struct domain *d, int slot, bool_t enable)
+{
+ struct hvm_hotplug *hp = &d->arch.hvm_domain.hotplug;
+
+ gdprintk(XENLOG_INFO, "%s: %s %d\n", __func__,
+ ( enable ) ? "enable" : "disable", slot);
+
+ if ( enable )
+ hp->slot_up |= (1u << slot);
+ else
+ hp->slot_down |= (1u << slot);
+
+ hp->gpe_sts[0] |= GPE_PCI_HOTPLUG_STATUS;
+ gpe_update_sci(hp);
+}
+
+int gpe_init(struct domain *d)
+{
+ struct hvm_hotplug *hp = &d->arch.hvm_domain.hotplug;
+
+ hp->domain = d;
+
+ hp->gpe_sts = xzalloc_array(uint8_t, GPE_LEN / 2);
+ if ( hp->gpe_sts == NULL )
+ goto fail1;
+
+ hp->gpe_en = xzalloc_array(uint8_t, GPE_LEN / 2);
+ if ( hp->gpe_en == NULL )
+ goto fail2;
+
+ register_portio_handler(d, GPE_BASE, GPE_LEN, handle_gpe_io);
+ register_portio_handler(d, PCI_HOTPLUG_BASE, PCI_HOTPLUG_LEN,
+ handle_pci_hotplug_io);
+
+ return 0;
+
+fail2:
+ xfree(hp->gpe_sts);
+
+fail1:
+ return -ENOMEM;
+}
+
+void gpe_deinit(struct domain *d)
+{
+ struct hvm_hotplug *hp = &d->arch.hvm_domain.hotplug;
+
+ xfree(hp->gpe_en);
+ xfree(hp->gpe_sts);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * c-tab-always-indent: nil
+ * End:
+ */
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index e8b73fa..7e80dd7 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -1329,15 +1329,21 @@ int hvm_domain_initialise(struct domain *d)
rtc_init(d);
+ rc = gpe_init(d);
+ if ( rc != 0 )
+ goto fail2;
+
register_portio_handler(d, 0xe9, 1, hvm_print_line);
register_portio_handler(d, 0xcf8, 4, hvm_access_cf8);
rc = hvm_funcs.domain_initialise(d);
if ( rc != 0 )
- goto fail2;
+ goto fail3;
return 0;
+ fail3:
+ gpe_deinit(d);
fail2:
rtc_deinit(d);
stdvga_deinit(d);
@@ -1383,6 +1389,7 @@ void hvm_domain_destroy(struct domain *d)
return;
hvm_funcs.domain_destroy(d);
+ gpe_deinit(d);
rtc_deinit(d);
stdvga_deinit(d);
vioapic_deinit(d);
@@ -5164,6 +5171,32 @@ out:
return rc;
}
+static int hvmop_pci_hotplug(
+ XEN_GUEST_HANDLE_PARAM(xen_hvm_pci_hotplug_t) uop)
+{
+ xen_hvm_pci_hotplug_t op;
+ struct domain *d;
+ int rc;
+
+ if ( copy_from_guest(&op, uop, 1) )
+ return -EFAULT;
+
+ rc = rcu_lock_remote_domain_by_id(op.domid, &d);
+ if ( rc != 0 )
+ return rc;
+
+ rc = -EINVAL;
+ if ( !is_hvm_domain(d) )
+ goto out;
+
+ pci_hotplug(d, op.slot, op.enable);
+ rc = 0;
+
+out:
+ rcu_unlock_domain(d);
+ return rc;
+}
+
long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE_PARAM(void) arg)
{
@@ -5207,6 +5240,11 @@ long do_hvm_op(unsigned long op,
XEN_GUEST_HANDLE_PARAM(void) arg)
guest_handle_cast(arg, xen_hvm_destroy_ioreq_server_t));
break;
+ case HVMOP_pci_hotplug:
+ rc = hvmop_pci_hotplug(
+ guest_handle_cast(arg, xen_hvm_pci_hotplug_t));
+ break;
+
case HVMOP_set_param:
case HVMOP_get_param:
{
diff --git a/xen/include/asm-x86/hvm/domain.h b/xen/include/asm-x86/hvm/domain.h
index e9da543..178e64c 100644
--- a/xen/include/asm-x86/hvm/domain.h
+++ b/xen/include/asm-x86/hvm/domain.h
@@ -67,12 +67,24 @@ struct hvm_ioreq_server {
struct list_head pcidev_list;
};
+struct hvm_hotplug {
+ struct domain *domain;
+ uint8_t *gpe_sts;
+ uint8_t *gpe_en;
+
+ /* PCI hotplug */
+ uint32_t slot_up;
+ uint32_t slot_down;
+};
+
struct hvm_domain {
struct list_head ioreq_server_list;
spinlock_t ioreq_server_lock;
uint32_t pci_cf8;
spinlock_t pci_lock;
+ struct hvm_hotplug hotplug;
+
struct pl_time pl_time;
struct hvm_io_handler *io_handler;
diff --git a/xen/include/asm-x86/hvm/io.h b/xen/include/asm-x86/hvm/io.h
index 86db58d..072bfe7 100644
--- a/xen/include/asm-x86/hvm/io.h
+++ b/xen/include/asm-x86/hvm/io.h
@@ -142,5 +142,11 @@ void stdvga_init(struct domain *d);
void stdvga_deinit(struct domain *d);
extern void hvm_dpci_msi_eoi(struct domain *d, int vector);
+
+int gpe_init(struct domain *d);
+void gpe_deinit(struct domain *d);
+
+void pci_hotplug(struct domain *d, int slot, bool_t enable);
+
#endif /* __ASM_X86_HVM_IO_H__ */
diff --git a/xen/include/public/hvm/hvm_op.h b/xen/include/public/hvm/hvm_op.h
index 6b31189..20a53ab 100644
--- a/xen/include/public/hvm/hvm_op.h
+++ b/xen/include/public/hvm/hvm_op.h
@@ -340,6 +340,15 @@ struct xen_hvm_destroy_ioreq_server {
typedef struct xen_hvm_destroy_ioreq_server xen_hvm_destroy_ioreq_server_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_destroy_ioreq_server_t);
+#define HVMOP_pci_hotplug 24
+struct xen_hvm_pci_hotplug {
+ domid_t domid; /* IN - domain to be serviced */
+ uint8_t enable; /* IN - enable or disable? */
+ uint32_t slot; /* IN - slot to enable/disable */
+};
+typedef struct xen_hvm_pci_hotplug xen_hvm_pci_hotplug_t;
+DEFINE_XEN_GUEST_HANDLE(xen_hvm_pci_hotplug_t);
+
#endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */
#endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
diff --git a/xen/include/public/hvm/ioreq.h b/xen/include/public/hvm/ioreq.h
index e84fa75..40bfa61 100644
--- a/xen/include/public/hvm/ioreq.h
+++ b/xen/include/public/hvm/ioreq.h
@@ -101,6 +101,8 @@ typedef struct buffered_iopage buffered_iopage_t;
#define ACPI_PM_TMR_BLK_ADDRESS_V1 (ACPI_PM1A_EVT_BLK_ADDRESS_V1 + 0x08)
#define ACPI_GPE0_BLK_ADDRESS_V1 0xafe0
#define ACPI_GPE0_BLK_LEN_V1 0x04
+#define ACPI_PCI_HOTPLUG_ADDRESS_V1 0xae00
+#define ACPI_PCI_HOTPLUG_LEN_V1 0x10
/* Compatibility definitions for the default location (version 0). */
#define ACPI_PM1A_EVT_BLK_ADDRESS ACPI_PM1A_EVT_BLK_ADDRESS_V0
--
1.7.10.4
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