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-rwxr-xr-xconfigure28
-rw-r--r--hw/core/machine.c20
-rw-r--r--hw/i386/Makefile.objs1
-rw-r--r--hw/i386/kvm/pci-assign.c82
-rw-r--r--hw/i386/pc_piix.c139
-rw-r--r--hw/i386/pci-assign-load-rom.c91
-rw-r--r--hw/pci-host/piix.c94
-rw-r--r--hw/xen/Makefile.objs1
-rw-r--r--hw/xen/xen-host-pci-device.c10
-rw-r--r--hw/xen/xen-host-pci-device.h2
-rw-r--r--hw/xen/xen_pt.c192
-rw-r--r--hw/xen/xen_pt.h30
-rw-r--r--hw/xen/xen_pt_config_init.c281
-rw-r--r--hw/xen/xen_pt_graphics.c272
-rw-r--r--hw/xen/xen_pt_msi.c20
-rw-r--r--include/hw/boards.h1
-rw-r--r--include/hw/i386/pc.h9
-rw-r--r--include/hw/pci/pci-assign.h27
-rw-r--r--include/hw/xen/xen_common.h34
-rw-r--r--qemu-options.hx3
-rw-r--r--trace-events7
-rw-r--r--vl.c10
-rw-r--r--xen-hvm.c55
23 files changed, 1179 insertions, 230 deletions
diff --git a/configure b/configure
index d854936682..5c06663f3c 100755
--- a/configure
+++ b/configure
@@ -1889,6 +1889,34 @@ int main(void) {
xc_gnttab_open(NULL, 0);
xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
+ xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
+ xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
+ return 0;
+}
+EOF
+ compile_prog "" "$xen_libs"
+ then
+ xen_ctrl_version=460
+ xen=yes
+
+ # Xen 4.5
+ elif
+ cat > $TMPC <<EOF &&
+#include <xenctrl.h>
+#include <xenstore.h>
+#include <stdint.h>
+#include <xen/hvm/hvm_info_table.h>
+#if !defined(HVM_MAX_VCPUS)
+# error HVM_MAX_VCPUS not defined
+#endif
+int main(void) {
+ xc_interface *xc;
+ xs_daemon_open();
+ xc = xc_interface_open(0, 0, 0);
+ xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
+ xc_gnttab_open(NULL, 0);
+ xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
+ xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
return 0;
}
diff --git a/hw/core/machine.c b/hw/core/machine.c
index ac4654e9dd..51ed6b2e05 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -226,6 +226,20 @@ static void machine_set_usb(Object *obj, bool value, Error **errp)
ms->usb_disabled = !value;
}
+static bool machine_get_igd_gfx_passthru(Object *obj, Error **errp)
+{
+ MachineState *ms = MACHINE(obj);
+
+ return ms->igd_gfx_passthru;
+}
+
+static void machine_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
+{
+ MachineState *ms = MACHINE(obj);
+
+ ms->igd_gfx_passthru = value;
+}
+
static char *machine_get_firmware(Object *obj, Error **errp)
{
MachineState *ms = MACHINE(obj);
@@ -388,6 +402,12 @@ static void machine_initfn(Object *obj)
object_property_set_description(obj, "usb",
"Set on/off to enable/disable usb",
NULL);
+ object_property_add_bool(obj, "igd-passthru",
+ machine_get_igd_gfx_passthru,
+ machine_set_igd_gfx_passthru, NULL);
+ object_property_set_description(obj, "igd-passthru",
+ "Set on/off to enable/disable igd passthrou",
+ NULL);
object_property_add_str(obj, "firmware",
machine_get_firmware,
machine_set_firmware, NULL);
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index ebd1015a08..c250deb848 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -7,6 +7,7 @@ obj-$(CONFIG_XEN) += ../xenpv/ xen/
obj-y += kvmvapic.o
obj-y += acpi-build.o
+obj-y += pci-assign-load-rom.o
gen-hex-y += hw/i386/acpi-dsdt.hex
gen-hex-y += hw/i386/q35-acpi-dsdt.hex
diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c
index 74d22f4fd2..b1beaa66b2 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -37,6 +37,7 @@
#include "hw/pci/pci.h"
#include "hw/pci/msi.h"
#include "kvm_i386.h"
+#include "hw/pci/pci-assign.h"
#define MSIX_PAGE_SIZE 0x1000
@@ -48,17 +49,6 @@
#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */
#define IORESOURCE_MEM_64 0x00100000
-//#define DEVICE_ASSIGNMENT_DEBUG
-
-#ifdef DEVICE_ASSIGNMENT_DEBUG
-#define DEBUG(fmt, ...) \
- do { \
- fprintf(stderr, "%s: " fmt, __func__ , __VA_ARGS__); \
- } while (0)
-#else
-#define DEBUG(fmt, ...)
-#endif
-
typedef struct PCIRegion {
int type; /* Memory or port I/O */
int valid;
@@ -1896,73 +1886,15 @@ static void assign_register_types(void)
type_init(assign_register_types)
-/*
- * Scan the assigned devices for the devices that have an option ROM, and then
- * load the corresponding ROM data to RAM. If an error occurs while loading an
- * option ROM, we just ignore that option ROM and continue with the next one.
- */
static void assigned_dev_load_option_rom(AssignedDevice *dev)
{
- char name[32], rom_file[64];
- FILE *fp;
- uint8_t val;
- struct stat st;
- void *ptr;
-
- /* If loading ROM from file, pci handles it */
- if (dev->dev.romfile || !dev->dev.rom_bar) {
- return;
- }
+ int size = 0;
- snprintf(rom_file, sizeof(rom_file),
- "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom",
- dev->host.domain, dev->host.bus, dev->host.slot,
- dev->host.function);
+ pci_assign_dev_load_option_rom(&dev->dev, OBJECT(dev), &size,
+ dev->host.domain, dev->host.bus,
+ dev->host.slot, dev->host.function);
- if (stat(rom_file, &st)) {
- return;
- }
-
- if (access(rom_file, F_OK)) {
- error_report("pci-assign: Insufficient privileges for %s", rom_file);
- return;
- }
-
- /* Write "1" to the ROM file to enable it */
- fp = fopen(rom_file, "r+");
- if (fp == NULL) {
- return;
+ if (!size) {
+ error_report("pci-assign: Invalid ROM.");
}
- val = 1;
- if (fwrite(&val, 1, 1, fp) != 1) {
- goto close_rom;
- }
- fseek(fp, 0, SEEK_SET);
-
- snprintf(name, sizeof(name), "%s.rom",
- object_get_typename(OBJECT(dev)));
- memory_region_init_ram(&dev->dev.rom, OBJECT(dev), name, st.st_size,
- &error_abort);
- vmstate_register_ram(&dev->dev.rom, &dev->dev.qdev);
- ptr = memory_region_get_ram_ptr(&dev->dev.rom);
- memset(ptr, 0xff, st.st_size);
-
- if (!fread(ptr, 1, st.st_size, fp)) {
- error_report("pci-assign: Cannot read from host %s", rom_file);
- error_printf("Device option ROM contents are probably invalid "
- "(check dmesg).\nSkip option ROM probe with rombar=0, "
- "or load from file with romfile=\n");
- goto close_rom;
- }
-
- pci_register_bar(&dev->dev, PCI_ROM_SLOT, 0, &dev->dev.rom);
- dev->dev.has_rom = true;
-close_rom:
- /* Write "0" to disable ROM */
- fseek(fp, 0, SEEK_SET);
- val = 0;
- if (!fwrite(&val, 1, 1, fp)) {
- DEBUG("%s\n", "Failed to disable pci-sysfs rom file");
- }
- fclose(fp);
}
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index eab39fc098..3f925b26db 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -50,7 +50,8 @@
#include "cpu.h"
#include "qemu/error-report.h"
#ifdef CONFIG_XEN
-# include <xen/hvm/hvm_info_table.h>
+#include <xen/hvm/hvm_info_table.h>
+#include "hw/xen/xen_pt.h"
#endif
#include "migration/migration.h"
@@ -76,7 +77,8 @@ static bool has_reserved_memory = true;
static bool kvmclock_enabled = true;
/* PC hardware initialisation */
-static void pc_init1(MachineState *machine)
+static void pc_init1(MachineState *machine,
+ const char *host_type, const char *pci_type)
{
PCMachineState *pcms = PC_MACHINE(machine);
MemoryRegion *system_memory = get_system_memory();
@@ -194,7 +196,9 @@ static void pc_init1(MachineState *machine)
}
if (pci_enabled) {
- pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi,
+ pci_bus = i440fx_init(host_type,
+ pci_type,
+ &i440fx_state, &piix3_devfn, &isa_bus, gsi,
system_memory, system_io, machine->ram_size,
pcms->below_4g_mem_size,
pcms->above_4g_mem_size,
@@ -412,15 +416,25 @@ static void pc_init_isa(MachineState *machine)
}
x86_cpu_compat_kvm_no_autoenable(FEAT_KVM, 1 << KVM_FEATURE_PV_EOI);
enable_compat_apic_id_mode();
- pc_init1(machine);
+ pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, TYPE_I440FX_PCI_DEVICE);
}
#ifdef CONFIG_XEN
+static void pc_xen_hvm_init_pci(MachineState *machine)
+{
+ const char *pci_type = has_igd_gfx_passthru ?
+ TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE : TYPE_I440FX_PCI_DEVICE;
+
+ pc_init1(machine,
+ TYPE_I440FX_PCI_HOST_BRIDGE,
+ pci_type);
+}
+
static void pc_xen_hvm_init(MachineState *machine)
{
PCIBus *bus;
- pc_init1(machine);
+ pc_xen_hvm_init_pci(machine);
bus = pci_find_primary_bus();
if (bus != NULL) {
@@ -436,7 +450,8 @@ static void pc_xen_hvm_init(MachineState *machine)
if (compat) { \
compat(machine); \
} \
- pc_init1(machine); \
+ pc_init1(machine, TYPE_I440FX_PCI_HOST_BRIDGE, \
+ TYPE_I440FX_PCI_DEVICE); \
} \
DEFINE_PC_MACHINE(suffix, name, pc_init_##suffix, optionfn)
@@ -878,6 +893,118 @@ static void pc_i440fx_0_10_machine_options(MachineClass *m)
DEFINE_I440FX_MACHINE(v0_10, "pc-0.10", pc_compat_0_13,
pc_i440fx_0_10_machine_options);
+typedef struct {
+ uint16_t gpu_device_id;
+ uint16_t pch_device_id;
+ uint8_t pch_revision_id;
+} IGDDeviceIDInfo;
+
+/* In real world different GPU should have different PCH. But actually
+ * the different PCH DIDs likely map to different PCH SKUs. We do the
+ * same thing for the GPU. For PCH, the different SKUs are going to be
+ * all the same silicon design and implementation, just different
+ * features turn on and off with fuses. The SW interfaces should be
+ * consistent across all SKUs in a given family (eg LPT). But just same
+ * features may not be supported.
+ *
+ * Most of these different PCH features probably don't matter to the
+ * Gfx driver, but obviously any difference in display port connections
+ * will so it should be fine with any PCH in case of passthrough.
+ *
+ * So currently use one PCH version, 0x8c4e, to cover all HSW(Haswell)
+ * scenarios, 0x9cc3 for BDW(Broadwell).
+ */
+static const IGDDeviceIDInfo igd_combo_id_infos[] = {
+ /* HSW Classic */
+ {0x0402, 0x8c4e, 0x04}, /* HSWGT1D, HSWD_w7 */
+ {0x0406, 0x8c4e, 0x04}, /* HSWGT1M, HSWM_w7 */
+ {0x0412, 0x8c4e, 0x04}, /* HSWGT2D, HSWD_w7 */
+ {0x0416, 0x8c4e, 0x04}, /* HSWGT2M, HSWM_w7 */
+ {0x041E, 0x8c4e, 0x04}, /* HSWGT15D, HSWD_w7 */
+ /* HSW ULT */
+ {0x0A06, 0x8c4e, 0x04}, /* HSWGT1UT, HSWM_w7 */
+ {0x0A16, 0x8c4e, 0x04}, /* HSWGT2UT, HSWM_w7 */
+ {0x0A26, 0x8c4e, 0x06}, /* HSWGT3UT, HSWM_w7 */
+ {0x0A2E, 0x8c4e, 0x04}, /* HSWGT3UT28W, HSWM_w7 */
+ {0x0A1E, 0x8c4e, 0x04}, /* HSWGT2UX, HSWM_w7 */
+ {0x0A0E, 0x8c4e, 0x04}, /* HSWGT1ULX, HSWM_w7 */
+ /* HSW CRW */
+ {0x0D26, 0x8c4e, 0x04}, /* HSWGT3CW, HSWM_w7 */
+ {0x0D22, 0x8c4e, 0x04}, /* HSWGT3CWDT, HSWD_w7 */
+ /* HSW Server */
+ {0x041A, 0x8c4e, 0x04}, /* HSWSVGT2, HSWD_w7 */
+ /* HSW SRVR */
+ {0x040A, 0x8c4e, 0x04}, /* HSWSVGT1, HSWD_w7 */
+ /* BSW */
+ {0x1606, 0x9cc3, 0x03}, /* BDWULTGT1, BDWM_w7 */
+ {0x1616, 0x9cc3, 0x03}, /* BDWULTGT2, BDWM_w7 */
+ {0x1626, 0x9cc3, 0x03}, /* BDWULTGT3, BDWM_w7 */
+ {0x160E, 0x9cc3, 0x03}, /* BDWULXGT1, BDWM_w7 */
+ {0x161E, 0x9cc3, 0x03}, /* BDWULXGT2, BDWM_w7 */
+ {0x1602, 0x9cc3, 0x03}, /* BDWHALOGT1, BDWM_w7 */
+ {0x1612, 0x9cc3, 0x03}, /* BDWHALOGT2, BDWM_w7 */
+ {0x1622, 0x9cc3, 0x03}, /* BDWHALOGT3, BDWM_w7 */
+ {0x162B, 0x9cc3, 0x03}, /* BDWHALO28W, BDWM_w7 */
+ {0x162A, 0x9cc3, 0x03}, /* BDWGT3WRKS, BDWM_w7 */
+ {0x162D, 0x9cc3, 0x03}, /* BDWGT3SRVR, BDWM_w7 */
+};
+
+static void isa_bridge_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ dc->desc = "ISA bridge faked to support IGD PT";
+ k->vendor_id = PCI_VENDOR_ID_INTEL;
+ k->class_id = PCI_CLASS_BRIDGE_ISA;
+};
+
+static TypeInfo isa_bridge_info = {
+ .name = "igd-passthrough-isa-bridge",
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(PCIDevice),
+ .class_init = isa_bridge_class_init,
+};
+
+static void pt_graphics_register_types(void)
+{
+ type_register_static(&isa_bridge_info);
+}
+type_init(pt_graphics_register_types)
+
+void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id)
+{
+ struct PCIDevice *bridge_dev;
+ int i, num;
+ uint16_t pch_dev_id = 0xffff;
+ uint8_t pch_rev_id;
+
+ num = ARRAY_SIZE(igd_combo_id_infos);
+ for (i = 0; i < num; i++) {
+ if (gpu_dev_id == igd_combo_id_infos[i].gpu_device_id) {
+ pch_dev_id = igd_combo_id_infos[i].pch_device_id;
+ pch_rev_id = igd_combo_id_infos[i].pch_revision_id;
+ }
+ }
+
+ if (pch_dev_id == 0xffff) {
+ return;
+ }
+
+ /* Currently IGD drivers always need to access PCH by 1f.0. */
+ bridge_dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
+ "igd-passthrough-isa-bridge");
+
+ /*
+ * Note that vendor id is always PCI_VENDOR_ID_INTEL.
+ */
+ if (!bridge_dev) {
+ fprintf(stderr, "set igd-passthrough-isa-bridge failed!\n");
+ return;
+ }
+ pci_config_set_device_id(bridge_dev->config, pch_dev_id);
+ pci_config_set_revision(bridge_dev->config, pch_rev_id);
+}
static void isapc_machine_options(MachineClass *m)
{
diff --git a/hw/i386/pci-assign-load-rom.c b/hw/i386/pci-assign-load-rom.c
new file mode 100644
index 0000000000..34a3a7ed7f
--- /dev/null
+++ b/hw/i386/pci-assign-load-rom.c
@@ -0,0 +1,91 @@
+/*
+ * This is splited from hw/i386/kvm/pci-assign.c
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "hw/hw.h"
+#include "hw/i386/pc.h"
+#include "qemu/error-report.h"
+#include "ui/console.h"
+#include "hw/loader.h"
+#include "monitor/monitor.h"
+#include "qemu/range.h"
+#include "sysemu/sysemu.h"
+#include "hw/pci/pci.h"
+#include "hw/pci/pci-assign.h"
+
+/*
+ * Scan the assigned devices for the devices that have an option ROM, and then
+ * load the corresponding ROM data to RAM. If an error occurs while loading an
+ * option ROM, we just ignore that option ROM and continue with the next one.
+ */
+void *pci_assign_dev_load_option_rom(PCIDevice *dev, struct Object *owner,
+ int *size, unsigned int domain,
+ unsigned int bus, unsigned int slot,
+ unsigned int function)
+{
+ char name[32], rom_file[64];
+ FILE *fp;
+ uint8_t val;
+ struct stat st;
+ void *ptr = NULL;
+
+ /* If loading ROM from file, pci handles it */
+ if (dev->romfile || !dev->rom_bar) {
+ return NULL;
+ }
+
+ snprintf(rom_file, sizeof(rom_file),
+ "/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom",
+ domain, bus, slot, function);
+
+ if (stat(rom_file, &st)) {
+ return NULL;
+ }
+
+ if (access(rom_file, F_OK)) {
+ error_report("pci-assign: Insufficient privileges for %s", rom_file);
+ return NULL;
+ }
+
+ /* Write "1" to the ROM file to enable it */
+ fp = fopen(rom_file, "r+");
+ if (fp == NULL) {
+ return NULL;
+ }
+ val = 1;
+ if (fwrite(&val, 1, 1, fp) != 1) {
+ goto close_rom;
+ }
+ fseek(fp, 0, SEEK_SET);
+
+ snprintf(name, sizeof(name), "%s.rom", object_get_typename(owner));
+ memory_region_init_ram(&dev->rom, owner, name, st.st_size, &error_abort);
+ vmstate_register_ram(&dev->rom, &dev->qdev);
+ ptr = memory_region_get_ram_ptr(&dev->rom);
+ memset(ptr, 0xff, st.st_size);
+
+ if (!fread(ptr, 1, st.st_size, fp)) {
+ error_report("pci-assign: Cannot read from host %s", rom_file);
+ error_printf("Device option ROM contents are probably invalid "
+ "(check dmesg).\nSkip option ROM probe with rombar=0, "
+ "or load from file with romfile=\n");
+ goto close_rom;
+ }
+
+ pci_register_bar(dev, PCI_ROM_SLOT, 0, &dev->rom);
+ dev->has_rom = true;
+ *size = st.st_size;
+close_rom:
+ /* Write "0" to disable ROM */
+ fseek(fp, 0, SEEK_SET);
+ val = 0;
+ if (!fwrite(&val, 1, 1, fp)) {
+ DEBUG("%s\n", "Failed to disable pci-sysfs rom file");
+ }
+ fclose(fp);
+
+ return ptr;
+}
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index 1cb25f3fa6..1fb71c8081 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -40,7 +40,6 @@
* http://download.intel.com/design/chipsets/datashts/29054901.pdf
*/
-#define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost"
#define I440FX_PCI_HOST_BRIDGE(obj) \
OBJECT_CHECK(I440FXState, (obj), TYPE_I440FX_PCI_HOST_BRIDGE)
@@ -95,7 +94,6 @@ typedef struct PIIX3State {
#define PIIX3_PCI_DEVICE(obj) \
OBJECT_CHECK(PIIX3State, (obj), TYPE_PIIX3_PCI_DEVICE)
-#define TYPE_I440FX_PCI_DEVICE "i440FX"
#define I440FX_PCI_DEVICE(obj) \
OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
@@ -305,7 +303,8 @@ static void i440fx_realize(PCIDevice *dev, Error **errp)
dev->config[I440FX_SMRAM] = 0x02;
}
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
+PCIBus *i440fx_init(const char *host_type, const char *pci_type,
+ PCII440FXState **pi440fx_state,
int *piix3_devfn,
ISABus **isa_bus, qemu_irq *pic,
MemoryRegion *address_space_mem,
@@ -325,7 +324,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
unsigned i;
I440FXState *i440fx;
- dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
+ dev = qdev_create(NULL, host_type);
s = PCI_HOST_BRIDGE(dev);
b = pci_bus_new(dev, NULL, pci_address_space,
address_space_io, 0, TYPE_PCI_BUS);
@@ -333,7 +332,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev), NULL);
qdev_init_nofail(dev);
- d = pci_create_simple(b, 0, TYPE_I440FX_PCI_DEVICE);
+ d = pci_create_simple(b, 0, pci_type);
*pi440fx_state = I440FX_PCI_DEVICE(d);
f = *pi440fx_state;
f->system_memory = address_space_mem;
@@ -740,6 +739,90 @@ static const TypeInfo i440fx_info = {
.class_init = i440fx_class_init,
};
+/* IGD Passthrough Host Bridge. */
+typedef struct {
+ uint8_t offset;
+ uint8_t len;
+} IGDHostInfo;
+
+/* Here we just expose minimal host bridge offset subset. */
+static const IGDHostInfo igd_host_bridge_infos[] = {
+ {0x08, 2}, /* revision id */
+ {0x2c, 2}, /* sybsystem vendor id */
+ {0x2e, 2}, /* sybsystem id */
+ {0x50, 2}, /* SNB: processor graphics control register */
+ {0x52, 2}, /* processor graphics control register */
+ {0xa4, 4}, /* SNB: graphics base of stolen memory */
+ {0xa8, 4}, /* SNB: base of GTT stolen memory */
+};
+
+static int host_pci_config_read(int pos, int len, uint32_t val)
+{
+ char path[PATH_MAX];
+ int config_fd;
+ ssize_t size = sizeof(path);
+ /* Access real host bridge. */
+ int rc = snprintf(path, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
+ 0, 0, 0, 0, "config");
+
+ if (rc >= size || rc < 0) {
+ return -ENODEV;
+ }
+
+ config_fd = open(path, O_RDWR);
+ if (config_fd < 0) {
+ return -ENODEV;
+ }
+
+ if (lseek(config_fd, pos, SEEK_SET) != pos) {
+ return -errno;
+ }
+ do {
+ rc = read(config_fd, (uint8_t *)&val, len);
+ } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
+ if (rc != len) {
+ return -errno;
+ }
+
+ return 0;
+}
+
+static int igd_pt_i440fx_initfn(struct PCIDevice *pci_dev)
+{
+ uint32_t val = 0;
+ int rc, i, num;
+ int pos, len;
+
+ num = ARRAY_SIZE(igd_host_bridge_infos);
+ for (i = 0; i < num; i++) {
+ pos = igd_host_bridge_infos[i].offset;
+ len = igd_host_bridge_infos[i].len;
+ rc = host_pci_config_read(pos, len, val);
+ if (rc) {
+ return -ENODEV;
+ }
+ pci_default_write_config(pci_dev, pos, val, len);
+ }
+
+ return 0;
+}
+
+static void igd_passthrough_i440fx_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->init = igd_pt_i440fx_initfn;
+ dc->desc = "IGD Passthrough Host bridge";
+}
+
+static const TypeInfo igd_passthrough_i440fx_info = {
+ .name = TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE,
+ .parent = TYPE_I440FX_PCI_DEVICE,
+ .instance_size = sizeof(PCII440FXState),
+ .class_init = igd_passthrough_i440fx_class_init,
+};
+
static const char *i440fx_pcihost_root_bus_path(PCIHostState *host_bridge,
PCIBus *rootbus)
{
@@ -781,6 +864,7 @@ static const TypeInfo i440fx_pcihost_info = {
static void i440fx_register_types(void)
{
type_register_static(&i440fx_info);
+ type_register_static(&igd_passthrough_i440fx_info);
type_register_static(&piix3_pci_type_info);
type_register_static(&piix3_info);
type_register_static(&piix3_xen_info);
diff --git a/hw/xen/Makefile.objs b/hw/xen/Makefile.objs
index a0ca0aa3df..a9ad7e70f7 100644
--- a/hw/xen/Makefile.objs
+++ b/hw/xen/Makefile.objs
@@ -3,3 +3,4 @@ common-obj-$(CONFIG_XEN_BACKEND) += xen_backend.o xen_devconfig.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_msi.o
+obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o xen_pt_msi.o xen_pt_graphics.o
diff --git a/hw/xen/xen-host-pci-device.c b/hw/xen/xen-host-pci-device.c
index 743b37b991..be28ca2ce7 100644
--- a/hw/xen/xen-host-pci-device.c
+++ b/hw/xen/xen-host-pci-device.c
@@ -376,6 +376,11 @@ int xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
goto error;
}
d->irq = v;
+ rc = xen_host_pci_get_hex_value(d, "class", &v);
+ if (rc) {
+ goto error;
+ }
+ d->class_code = v;
d->is_virtfn = xen_host_pci_dev_is_virtfn(d);
return 0;
@@ -387,6 +392,11 @@ error:
return rc;
}
+bool xen_host_pci_device_closed(XenHostPCIDevice *d)
+{
+ return d->config_fd == -1;
+}
+
void xen_host_pci_device_put(XenHostPCIDevice *d)
{
if (d->config_fd >= 0) {
diff --git a/hw/xen/xen-host-pci-device.h b/hw/xen/xen-host-pci-device.h
index c2486f0c19..3d44e044ff 100644
--- a/hw/xen/xen-host-pci-device.h
+++ b/hw/xen/xen-host-pci-device.h
@@ -25,6 +25,7 @@ typedef struct XenHostPCIDevice {
uint16_t vendor_id;
uint16_t device_id;
+ uint32_t class_code;
int irq;
XenHostPCIIORegion io_regions[PCI_NUM_REGIONS - 1];
@@ -38,6 +39,7 @@ typedef struct XenHostPCIDevice {
int xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
uint8_t bus, uint8_t dev, uint8_t func);
void xen_host_pci_device_put(XenHostPCIDevice *pci_dev);
+bool xen_host_pci_device_closed(XenHostPCIDevice *d);
int xen_host_pci_get_byte(XenHostPCIDevice *d, int pos, uint8_t *p);
int xen_host_pci_get_word(XenHostPCIDevice *d, int pos, uint16_t *p);
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index ed5fcaec0d..2b54f52707 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -56,6 +56,7 @@
#include "hw/pci/pci.h"
#include "hw/xen/xen.h"
+#include "hw/i386/pc.h"
#include "hw/xen/xen_backend.h"
#include "xen_pt.h"
#include "qemu/range.h"
@@ -378,7 +379,7 @@ static void xen_pt_pci_write_config(PCIDevice *d, uint32_t addr,
}
}
- /* need to shift back before passing them to xen_host_pci_device */
+ /* need to shift back before passing them to xen_host_pci_set_block. */
val >>= (addr & 3) << 3;
memory_region_transaction_commit();
@@ -406,7 +407,7 @@ out:
(uint8_t *)&val + index, len);
if (rc < 0) {
- XEN_PT_ERR(d, "pci_write_block failed. return value: %d.\n", rc);
+ XEN_PT_ERR(d, "xen_host_pci_set_block failed. return value: %d.\n", rc);
}
}
}
@@ -502,6 +503,7 @@ static int xen_pt_register_regions(XenPCIPassthroughState *s, uint16_t *cmd)
d->rom.size, d->rom.base_addr);
}
+ xen_pt_register_vga_regions(d);
return 0;
}
@@ -683,13 +685,86 @@ static const MemoryListener xen_pt_io_listener = {
.priority = 10,
};
+static void
+xen_igd_passthrough_isa_bridge_create(XenPCIPassthroughState *s,
+ XenHostPCIDevice *dev)
+{
+ uint16_t gpu_dev_id;
+ PCIDevice *d = &s->dev;
+
+ gpu_dev_id = dev->device_id;
+ igd_passthrough_isa_bridge_create(d->bus, gpu_dev_id);
+}
+
+/* destroy. */
+static void xen_pt_destroy(PCIDevice *d) {
+
+ XenPCIPassthroughState *s = XEN_PT_DEVICE(d);
+ XenHostPCIDevice *host_dev = &s->real_device;
+ uint8_t machine_irq = s->machine_irq;
+ uint8_t intx;
+ int rc;
+
+ if (machine_irq && !xen_host_pci_device_closed(&s->real_device)) {
+ intx = xen_pt_pci_intx(s);
+ rc = xc_domain_unbind_pt_irq(xen_xc, xen_domid, machine_irq,
+ PT_IRQ_TYPE_PCI,
+ pci_bus_num(d->bus),
+ PCI_SLOT(s->dev.devfn),
+ intx,
+ 0 /* isa_irq */);
+ if (rc < 0) {
+ XEN_PT_ERR(d, "unbinding of interrupt INT%c failed."
+ " (machine irq: %i, err: %d)"
+ " But bravely continuing on..\n",
+ 'a' + intx, machine_irq, errno);
+ }
+ }
+
+ /* N.B. xen_pt_config_delete takes care of freeing them. */
+ if (s->msi) {
+ xen_pt_msi_disable(s);
+ }
+ if (s->msix) {
+ xen_pt_msix_disable(s);
+ }
+
+ if (machine_irq) {
+ xen_pt_mapped_machine_irq[machine_irq]--;
+
+ if (xen_pt_mapped_machine_irq[machine_irq] == 0) {
+ rc = xc_physdev_unmap_pirq(xen_xc, xen_domid, machine_irq);
+
+ if (rc < 0) {
+ XEN_PT_ERR(d, "unmapping of interrupt %i failed. (err: %d)"
+ " But bravely continuing on..\n",
+ machine_irq, errno);
+ }
+ }
+ s->machine_irq = 0;
+ }
+
+ /* delete all emulated config registers */
+ xen_pt_config_delete(s);
+
+ xen_pt_unregister_vga_regions(host_dev);
+
+ if (s->listener_set) {
+ memory_listener_unregister(&s->memory_listener);
+ memory_listener_unregister(&s->io_listener);
+ s->listener_set = false;
+ }
+ if (!xen_host_pci_device_closed(&s->real_device)) {
+ xen_host_pci_device_put(&s->real_device);
+ }
+}
/* init */
static int xen_pt_initfn(PCIDevice *d)
{
XenPCIPassthroughState *s = XEN_PT_DEVICE(d);
int rc = 0;
- uint8_t machine_irq = 0;
+ uint8_t machine_irq = 0, scratch;
uint16_t cmd = 0;
int pirq = XEN_PT_UNASSIGNED_PIRQ;
@@ -715,27 +790,48 @@ static int xen_pt_initfn(PCIDevice *d)
}
/* Initialize virtualized PCI configuration (Extended 256 Bytes) */
- if (xen_host_pci_get_block(&s->real_device, 0, d->config,
- PCI_CONFIG_SPACE_SIZE) == -1) {
- xen_host_pci_device_put(&s->real_device);
- return -1;
- }
+ memset(d->config, 0, PCI_CONFIG_SPACE_SIZE);
s->memory_listener = xen_pt_memory_listener;
s->io_listener = xen_pt_io_listener;
+ /* Setup VGA bios for passthrough GFX */
+ if ((s->real_device.domain == 0) && (s->real_device.bus == 0) &&
+ (s->real_device.dev == 2) && (s->real_device.func == 0)) {
+ if (!is_igd_vga_passthrough(&s->real_device)) {
+ XEN_PT_ERR(d, "Need to enable igd-passthru if you're trying"
+ " to passthrough IGD GFX.\n");
+ xen_host_pci_device_put(&s->real_device);
+ return -1;
+ }
+
+ if (xen_pt_setup_vga(s, &s->real_device) < 0) {
+ XEN_PT_ERR(d, "Setup VGA BIOS of passthrough GFX failed!\n");
+ xen_host_pci_device_put(&s->real_device);
+ return -1;
+ }
+
+ /* Register ISA bridge for passthrough GFX. */
+ xen_igd_passthrough_isa_bridge_create(s, &s->real_device);
+ }
+
/* Handle real device's MMIO/PIO BARs */
xen_pt_register_regions(s, &cmd);
/* reinitialize each config register to be emulated */
- if (xen_pt_config_init(s)) {
+ rc = xen_pt_config_init(s);
+ if (rc) {
XEN_PT_ERR(d, "PCI Config space initialisation failed.\n");
- xen_host_pci_device_put(&s->real_device);
- return -1;
+ goto err_out;
}
/* Bind interrupt */
- if (!s->dev.config[PCI_INTERRUPT_PIN]) {
+ rc = xen_host_pci_get_byte(&s->real_device, PCI_INTERRUPT_PIN, &scratch);
+ if (rc) {
+ XEN_PT_ERR(d, "Failed to read PCI_INTERRUPT_PIN! (rc:%d)\n", rc);
+ goto err_out;
+ }
+ if (!scratch) {
XEN_PT_LOG(d, "no pin interrupt\n");
goto out;
}
@@ -785,69 +881,41 @@ static int xen_pt_initfn(PCIDevice *d)
out:
if (cmd) {
- xen_host_pci_set_word(&s->real_device, PCI_COMMAND,
- pci_get_word(d->config + PCI_COMMAND) | cmd);
+ uint16_t val;
+
+ rc = xen_host_pci_get_word(&s->real_device, PCI_COMMAND, &val);
+ if (rc) {
+ XEN_PT_ERR(d, "Failed to read PCI_COMMAND! (rc: %d)\n", rc);
+ goto err_out;
+ } else {
+ val |= cmd;
+ rc = xen_host_pci_set_word(&s->real_device, PCI_COMMAND, val);
+ if (rc) {
+ XEN_PT_ERR(d, "Failed to write PCI_COMMAND val=0x%x!(rc: %d)\n",
+ val, rc);
+ goto err_out;
+ }
+ }
}
memory_listener_register(&s->memory_listener, &s->dev.bus_master_as);
memory_listener_register(&s->io_listener, &address_space_io);
+ s->listener_set = true;
XEN_PT_LOG(d,
"Real physical device %02x:%02x.%d registered successfully!\n",
s->hostaddr.bus, s->hostaddr.slot, s->hostaddr.function);
return 0;
+
+err_out:
+ xen_pt_destroy(d);
+ assert(rc);
+ return rc;
}
static void xen_pt_unregister_device(PCIDevice *d)
{
- XenPCIPassthroughState *s = XEN_PT_DEVICE(d);
- uint8_t machine_irq = s->machine_irq;
- uint8_t intx = xen_pt_pci_intx(s);
- int rc;
-
- if (machine_irq) {
- rc = xc_domain_unbind_pt_irq(xen_xc, xen_domid, machine_irq,
- PT_IRQ_TYPE_PCI,
- pci_bus_num(d->bus),
- PCI_SLOT(s->dev.devfn),
- intx,
- 0 /* isa_irq */);
- if (rc < 0) {
- XEN_PT_ERR(d, "unbinding of interrupt INT%c failed."
- " (machine irq: %i, err: %d)"
- " But bravely continuing on..\n",
- 'a' + intx, machine_irq, errno);
- }
- }
-
- if (s->msi) {
- xen_pt_msi_disable(s);
- }
- if (s->msix) {
- xen_pt_msix_disable(s);
- }
-
- if (machine_irq) {
- xen_pt_mapped_machine_irq[machine_irq]--;
-
- if (xen_pt_mapped_machine_irq[machine_irq] == 0) {
- rc = xc_physdev_unmap_pirq(xen_xc, xen_domid, machine_irq);
-
- if (rc < 0) {
- XEN_PT_ERR(d, "unmapping of interrupt %i failed. (err: %d)"
- " But bravely continuing on..\n",
- machine_irq, errno);
- }
- }
- }
-
- /* delete all emulated config registers */
- xen_pt_config_delete(s);
-
- memory_listener_unregister(&s->memory_listener);
- memory_listener_unregister(&s->io_listener);
-
- xen_host_pci_device_put(&s->real_device);
+ xen_pt_destroy(d);
}
static Property xen_pci_passthrough_properties[] = {
diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
index 393f36ccbf..3bc22eb1d1 100644
--- a/hw/xen/xen_pt.h
+++ b/hw/xen/xen_pt.h
@@ -40,6 +40,9 @@ typedef struct XenPCIPassthroughState XenPCIPassthroughState;
#define XEN_PT_DEVICE(obj) \
OBJECT_CHECK(XenPCIPassthroughState, (obj), TYPE_XEN_PT_DEVICE)
+uint32_t igd_read_opregion(XenPCIPassthroughState *s);
+void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val);
+
/* function type for config reg */
typedef int (*xen_pt_conf_reg_init)
(XenPCIPassthroughState *, XenPTRegInfo *, uint32_t real_offset,
@@ -66,8 +69,9 @@ typedef int (*xen_pt_conf_byte_read)
#define XEN_PT_BAR_ALLF 0xFFFFFFFF
#define XEN_PT_BAR_UNMAPPED (-1)
-#define PCI_CAP_MAX 48
+#define XEN_PCI_CAP_MAX 48
+#define XEN_PCI_INTEL_OPREGION 0xfc
typedef enum {
XEN_PT_GRP_TYPE_HARDWIRED = 0, /* 0 Hardwired reg group */
@@ -134,7 +138,11 @@ struct XenPTRegInfo {
struct XenPTReg {
QLIST_ENTRY(XenPTReg) entries;
XenPTRegInfo *reg;
- uint32_t data; /* emulated value */
+ union {
+ uint8_t *byte;
+ uint16_t *half_word;
+ uint32_t *word;
+ } ptr; /* pointer to dev.config. */
};
typedef const struct XenPTRegGroupInfo XenPTRegGroupInfo;
@@ -217,6 +225,7 @@ struct XenPCIPassthroughState {
MemoryListener memory_listener;
MemoryListener io_listener;
+ bool listener_set;
};
int xen_pt_config_init(XenPCIPassthroughState *s);
@@ -282,6 +291,7 @@ static inline uint8_t xen_pt_pci_intx(XenPCIPassthroughState *s)
" value=%i, acceptable range is 1 - 4\n", r_val);
r_val = 0;
} else {
+ /* Note that if s.real_device.config_fd is closed we make 0xff. */
r_val -= 1;
}
@@ -289,7 +299,6 @@ static inline uint8_t xen_pt_pci_intx(XenPCIPassthroughState *s)
}
/* MSI/MSI-X */
-int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool en);
int xen_pt_msi_setup(XenPCIPassthroughState *s);
int xen_pt_msi_update(XenPCIPassthroughState *d);
void xen_pt_msi_disable(XenPCIPassthroughState *s);
@@ -305,5 +314,18 @@ static inline bool xen_pt_has_msix_mapping(XenPCIPassthroughState *s, int bar)
return s->msix && s->msix->bar_index == bar;
}
-
+extern void *pci_assign_dev_load_option_rom(PCIDevice *dev,
+ struct Object *owner, int *size,
+ unsigned int domain,
+ unsigned int bus, unsigned int slot,
+ unsigned int function);
+extern bool has_igd_gfx_passthru;
+static inline bool is_igd_vga_passthrough(XenHostPCIDevice *dev)
+{
+ return (has_igd_gfx_passthru
+ && ((dev->class_code >> 0x8) == PCI_CLASS_DISPLAY_VGA));
+}
+int xen_pt_register_vga_regions(XenHostPCIDevice *dev);
+int xen_pt_unregister_vga_regions(XenHostPCIDevice *dev);
+int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev);
#endif /* !XEN_PT_H */
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index dd37be38a4..aca3790681 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -128,10 +128,11 @@ static int xen_pt_byte_reg_read(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
{
XenPTRegInfo *reg = cfg_entry->reg;
uint8_t valid_emu_mask = 0;
+ uint8_t *data = cfg_entry->ptr.byte;
/* emulate byte register */
valid_emu_mask = reg->emu_mask & valid_mask;
- *value = XEN_PT_MERGE_VALUE(*value, cfg_entry->data, ~valid_emu_mask);
+ *value = XEN_PT_MERGE_VALUE(*value, *data, ~valid_emu_mask);
return 0;
}
@@ -140,10 +141,11 @@ static int xen_pt_word_reg_read(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
{
XenPTRegInfo *reg = cfg_entry->reg;
uint16_t valid_emu_mask = 0;
+ uint16_t *data = cfg_entry->ptr.half_word;
/* emulate word register */
valid_emu_mask = reg->emu_mask & valid_mask;
- *value = XEN_PT_MERGE_VALUE(*value, cfg_entry->data, ~valid_emu_mask);
+ *value = XEN_PT_MERGE_VALUE(*value, *data, ~valid_emu_mask);
return 0;
}
@@ -152,10 +154,11 @@ static int xen_pt_long_reg_read(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
{
XenPTRegInfo *reg = cfg_entry->reg;
uint32_t valid_emu_mask = 0;
+ uint32_t *data = cfg_entry->ptr.word;
/* emulate long register */
valid_emu_mask = reg->emu_mask & valid_mask;
- *value = XEN_PT_MERGE_VALUE(*value, cfg_entry->data, ~valid_emu_mask);
+ *value = XEN_PT_MERGE_VALUE(*value, *data, ~valid_emu_mask);
return 0;
}
@@ -169,10 +172,11 @@ static int xen_pt_byte_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
XenPTRegInfo *reg = cfg_entry->reg;
uint8_t writable_mask = 0;
uint8_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint8_t *data = cfg_entry->ptr.byte;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -186,10 +190,11 @@ static int xen_pt_word_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
XenPTRegInfo *reg = cfg_entry->reg;
uint16_t writable_mask = 0;
uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint16_t *data = cfg_entry->ptr.half_word;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -203,10 +208,11 @@ static int xen_pt_long_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
XenPTRegInfo *reg = cfg_entry->reg;
uint32_t writable_mask = 0;
uint32_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint32_t *data = cfg_entry->ptr.word;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -255,7 +261,7 @@ static int xen_pt_status_reg_init(XenPCIPassthroughState *s,
reg_entry = xen_pt_find_reg(reg_grp_entry, PCI_CAPABILITY_LIST);
if (reg_entry) {
/* check Capabilities Pointer register */
- if (reg_entry->data) {
+ if (*reg_entry->ptr.half_word) {
reg_field |= PCI_STATUS_CAP_LIST;
} else {
reg_field &= ~PCI_STATUS_CAP_LIST;
@@ -301,10 +307,11 @@ static int xen_pt_cmd_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
XenPTRegInfo *reg = cfg_entry->reg;
uint16_t writable_mask = 0;
uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint16_t *data = cfg_entry->ptr.half_word;
/* modify emulate register */
writable_mask = ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
if (*val & PCI_COMMAND_INTX_DISABLE) {
@@ -447,7 +454,7 @@ static int xen_pt_bar_reg_read(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
/* emulate BAR */
valid_emu_mask = bar_emu_mask & valid_mask;
- *value = XEN_PT_MERGE_VALUE(*value, cfg_entry->data, ~valid_emu_mask);
+ *value = XEN_PT_MERGE_VALUE(*value, *cfg_entry->ptr.word, ~valid_emu_mask);
return 0;
}
@@ -464,6 +471,7 @@ static int xen_pt_bar_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
uint32_t bar_ro_mask = 0;
uint32_t r_size = 0;
int index = 0;
+ uint32_t *data = cfg_entry->ptr.word;
index = xen_pt_bar_offset_to_index(reg->offset);
if (index < 0 || index >= PCI_NUM_REGIONS) {
@@ -500,7 +508,7 @@ static int xen_pt_bar_reg_write(XenPCIPassthroughState *s, XenPTReg *cfg_entry,
/* modify emulate register */
writable_mask = bar_emu_mask & ~bar_ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* check whether we need to update the virtual region address or not */
switch (s->bases[index].bar_flag) {
@@ -533,6 +541,7 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
uint32_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
pcibus_t r_size = 0;
uint32_t bar_ro_mask = 0;
+ uint32_t *data = cfg_entry->ptr.word;
r_size = d->io_regions[PCI_ROM_SLOT].size;
base = &s->bases[PCI_ROM_SLOT];
@@ -544,7 +553,7 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
/* modify emulate register */
writable_mask = ~bar_ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -552,6 +561,22 @@ static int xen_pt_exp_rom_bar_reg_write(XenPCIPassthroughState *s,
return 0;
}
+static int xen_pt_intel_opregion_read(XenPCIPassthroughState *s,
+ XenPTReg *cfg_entry,
+ uint32_t *value, uint32_t valid_mask)
+{
+ *value = igd_read_opregion(s);
+ return 0;
+}
+
+static int xen_pt_intel_opregion_write(XenPCIPassthroughState *s,
+ XenPTReg *cfg_entry, uint32_t *value,
+ uint32_t dev_value, uint32_t valid_mask)
+{
+ igd_write_opregion(s, *value);
+ return 0;
+}
+
/* Header Type0 reg static information table */
static XenPTRegInfo xen_pt_emu_reg_header0[] = {
/* Vendor ID reg */
@@ -800,15 +825,21 @@ static XenPTRegInfo xen_pt_emu_reg_vendor[] = {
static inline uint8_t get_capability_version(XenPCIPassthroughState *s,
uint32_t offset)
{
- uint8_t flags = pci_get_byte(s->dev.config + offset + PCI_EXP_FLAGS);
- return flags & PCI_EXP_FLAGS_VERS;
+ uint8_t flag;
+ if (xen_host_pci_get_byte(&s->real_device, offset + PCI_EXP_FLAGS, &flag)) {
+ return 0;
+ }
+ return flag & PCI_EXP_FLAGS_VERS;
}
static inline uint8_t get_device_type(XenPCIPassthroughState *s,
uint32_t offset)
{
- uint8_t flags = pci_get_byte(s->dev.config + offset + PCI_EXP_FLAGS);
- return (flags & PCI_EXP_FLAGS_TYPE) >> 4;
+ uint8_t flag;
+ if (xen_host_pci_get_byte(&s->real_device, offset + PCI_EXP_FLAGS, &flag)) {
+ return 0;
+ }
+ return (flag & PCI_EXP_FLAGS_TYPE) >> 4;
}
/* initialize Link Control register */
@@ -857,8 +888,14 @@ static int xen_pt_linkctrl2_reg_init(XenPCIPassthroughState *s,
reg_field = XEN_PT_INVALID_REG;
} else {
/* set Supported Link Speed */
- uint8_t lnkcap = pci_get_byte(s->dev.config + real_offset - reg->offset
- + PCI_EXP_LNKCAP);
+ uint8_t lnkcap;
+ int rc;
+ rc = xen_host_pci_get_byte(&s->real_device,
+ real_offset - reg->offset + PCI_EXP_LNKCAP,
+ &lnkcap);
+ if (rc) {
+ return rc;
+ }
reg_field |= PCI_EXP_LNKCAP_SLS & lnkcap;
}
@@ -971,10 +1008,11 @@ static int xen_pt_pmcsr_reg_write(XenPCIPassthroughState *s,
XenPTRegInfo *reg = cfg_entry->reg;
uint16_t writable_mask = 0;
uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint16_t *data = cfg_entry->ptr.half_word;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value & ~PCI_PM_CTRL_PME_STATUS,
@@ -1039,13 +1077,15 @@ static int xen_pt_msgctrl_reg_init(XenPCIPassthroughState *s,
XenPTRegInfo *reg, uint32_t real_offset,
uint32_t *data)
{
- PCIDevice *d = &s->dev;
XenPTMSI *msi = s->msi;
- uint16_t reg_field = 0;
+ uint16_t reg_field;
+ int rc;
/* use I/O device register's value as initial value */
- reg_field = pci_get_word(d->config + real_offset);
-
+ rc = xen_host_pci_get_word(&s->real_device, real_offset, &reg_field);
+ if (rc) {
+ return rc;
+ }
if (reg_field & PCI_MSI_FLAGS_ENABLE) {
XEN_PT_LOG(&s->dev, "MSI already enabled, disabling it first\n");
xen_host_pci_set_word(&s->real_device, real_offset,
@@ -1067,6 +1107,7 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
XenPTMSI *msi = s->msi;
uint16_t writable_mask = 0;
uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
+ uint16_t *data = cfg_entry->ptr.half_word;
/* Currently no support for multi-vector */
if (*val & PCI_MSI_FLAGS_QSIZE) {
@@ -1075,8 +1116,8 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
- msi->flags |= cfg_entry->data & ~PCI_MSI_FLAGS_ENABLE;
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
+ msi->flags |= *data & ~PCI_MSI_FLAGS_ENABLE;
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -1086,7 +1127,7 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
/* setup MSI pirq for the first time */
if (!msi->initialized) {
/* Init physical one */
- XEN_PT_LOG(&s->dev, "setup MSI\n");
+ XEN_PT_LOG(&s->dev, "setup MSI (register: %x).\n", *val);
if (xen_pt_msi_setup(s)) {
/* We do not broadcast the error to the framework code, so
* that MSI errors are contained in MSI emulation code and
@@ -1094,12 +1135,12 @@ static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
* Guest MSI would be actually not working.
*/
*val &= ~PCI_MSI_FLAGS_ENABLE;
- XEN_PT_WARN(&s->dev, "Can not map MSI.\n");
+ XEN_PT_WARN(&s->dev, "Can not map MSI (register: %x)!\n", *val);
return 0;
}
if (xen_pt_msi_update(s)) {
*val &= ~PCI_MSI_FLAGS_ENABLE;
- XEN_PT_WARN(&s->dev, "Can not bind MSI\n");
+ XEN_PT_WARN(&s->dev, "Can not bind MSI (register: %x)!\n", *val);
return 0;
}
msi->initialized = true;
@@ -1190,18 +1231,19 @@ static int xen_pt_msgaddr32_reg_write(XenPCIPassthroughState *s,
{
XenPTRegInfo *reg = cfg_entry->reg;
uint32_t writable_mask = 0;
- uint32_t old_addr = cfg_entry->data;
+ uint32_t old_addr = *cfg_entry->ptr.word;
+ uint32_t *data = cfg_entry->ptr.word;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
- s->msi->addr_lo = cfg_entry->data;
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
+ s->msi->addr_lo = *data;
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
/* update MSI */
- if (cfg_entry->data != old_addr) {
+ if (*data != old_addr) {
if (s->msi->mapped) {
xen_pt_msi_update(s);
}
@@ -1216,7 +1258,8 @@ static int xen_pt_msgaddr64_reg_write(XenPCIPassthroughState *s,
{
XenPTRegInfo *reg = cfg_entry->reg;
uint32_t writable_mask = 0;
- uint32_t old_addr = cfg_entry->data;
+ uint32_t old_addr = *cfg_entry->ptr.word;
+ uint32_t *data = cfg_entry->ptr.word;
/* check whether the type is 64 bit or not */
if (!(s->msi->flags & PCI_MSI_FLAGS_64BIT)) {
@@ -1227,15 +1270,15 @@ static int xen_pt_msgaddr64_reg_write(XenPCIPassthroughState *s,
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* update the msi_info too */
- s->msi->addr_hi = cfg_entry->data;
+ s->msi->addr_hi = *data;
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
/* update MSI */
- if (cfg_entry->data != old_addr) {
+ if (*data != old_addr) {
if (s->msi->mapped) {
xen_pt_msi_update(s);
}
@@ -1254,8 +1297,9 @@ static int xen_pt_msgdata_reg_write(XenPCIPassthroughState *s,
XenPTRegInfo *reg = cfg_entry->reg;
XenPTMSI *msi = s->msi;
uint16_t writable_mask = 0;
- uint16_t old_data = cfg_entry->data;
+ uint16_t old_data = *cfg_entry->ptr.half_word;
uint32_t offset = reg->offset;
+ uint16_t *data = cfg_entry->ptr.half_word;
/* check the offset whether matches the type or not */
if (!xen_pt_msi_check_type(offset, msi->flags, DATA)) {
@@ -1266,15 +1310,15 @@ static int xen_pt_msgdata_reg_write(XenPCIPassthroughState *s,
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* update the msi_info too */
- msi->data = cfg_entry->data;
+ msi->data = *data;
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, 0);
/* update MSI */
- if (cfg_entry->data != old_data) {
+ if (*data != old_data) {
if (msi->mapped) {
xen_pt_msi_update(s);
}
@@ -1411,14 +1455,16 @@ static int xen_pt_msixctrl_reg_init(XenPCIPassthroughState *s,
XenPTRegInfo *reg, uint32_t real_offset,
uint32_t *data)
{
- PCIDevice *d = &s->dev;
- uint16_t reg_field = 0;
+ uint16_t reg_field;
+ int rc;
/* use I/O device register's value as initial value */
- reg_field = pci_get_word(d->config + real_offset);
-
+ rc = xen_host_pci_get_word(&s->real_device, real_offset, &reg_field);
+ if (rc) {
+ return rc;
+ }
if (reg_field & PCI_MSIX_FLAGS_ENABLE) {
- XEN_PT_LOG(d, "MSIX already enabled, disabling it first\n");
+ XEN_PT_LOG(&s->dev, "MSIX already enabled, disabling it first\n");
xen_host_pci_set_word(&s->real_device, real_offset,
reg_field & ~PCI_MSIX_FLAGS_ENABLE);
}
@@ -1436,10 +1482,11 @@ static int xen_pt_msixctrl_reg_write(XenPCIPassthroughState *s,
uint16_t writable_mask = 0;
uint16_t throughable_mask = get_throughable_mask(s, reg, valid_mask);
int debug_msix_enabled_old;
+ uint16_t *data = cfg_entry->ptr.half_word;
/* modify emulate register */
writable_mask = reg->emu_mask & ~reg->ro_mask & valid_mask;
- cfg_entry->data = XEN_PT_MERGE_VALUE(*val, cfg_entry->data, writable_mask);
+ *data = XEN_PT_MERGE_VALUE(*val, *data, writable_mask);
/* create value for writing to I/O device register */
*val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask);
@@ -1492,6 +1539,19 @@ static XenPTRegInfo xen_pt_emu_reg_msix[] = {
},
};
+static XenPTRegInfo xen_pt_emu_reg_igd_opregion[] = {
+ /* Intel IGFX OpRegion reg */
+ {
+ .offset = 0x0,
+ .size = 4,
+ .init_val = 0,
+ .u.dw.read = xen_pt_intel_opregion_read,
+ .u.dw.write = xen_pt_intel_opregion_write,
+ },
+ {
+ .size = 0,
+ },
+};
/****************************
* Capabilities
@@ -1511,8 +1571,7 @@ static int xen_pt_vendor_size_init(XenPCIPassthroughState *s,
const XenPTRegGroupInfo *grp_reg,
uint32_t base_offset, uint8_t *size)
{
- *size = pci_get_byte(s->dev.config + base_offset + 0x02);
- return 0;
+ return xen_host_pci_get_byte(&s->real_device, base_offset + 0x02, size);
}
/* get PCI Express Capability Structure register group size */
static int xen_pt_pcie_size_init(XenPCIPassthroughState *s,
@@ -1591,12 +1650,15 @@ static int xen_pt_msi_size_init(XenPCIPassthroughState *s,
const XenPTRegGroupInfo *grp_reg,
uint32_t base_offset, uint8_t *size)
{
- PCIDevice *d = &s->dev;
uint16_t msg_ctrl = 0;
uint8_t msi_size = 0xa;
+ int rc;
- msg_ctrl = pci_get_word(d->config + (base_offset + PCI_MSI_FLAGS));
-
+ rc = xen_host_pci_get_word(&s->real_device, base_offset + PCI_MSI_FLAGS,
+ &msg_ctrl);
+ if (rc) {
+ return rc;
+ }
/* check if 64-bit address is capable of per-vector masking */
if (msg_ctrl & PCI_MSI_FLAGS_64BIT) {
msi_size += 4;
@@ -1729,6 +1791,14 @@ static const XenPTRegGroupInfo xen_pt_emu_reg_grps[] = {
.size_init = xen_pt_msix_size_init,
.emu_regs = xen_pt_emu_reg_msix,
},
+ /* Intel IGD Opregion group */
+ {
+ .grp_id = XEN_PCI_INTEL_OPREGION,
+ .grp_type = XEN_PT_GRP_TYPE_EMU,
+ .grp_size = 0x4,
+ .size_init = xen_pt_reg_grp_size_init,
+ .emu_regs = xen_pt_emu_reg_igd_opregion,
+ },
{
.grp_size = 0,
},
@@ -1739,11 +1809,14 @@ static int xen_pt_ptr_reg_init(XenPCIPassthroughState *s,
XenPTRegInfo *reg, uint32_t real_offset,
uint32_t *data)
{
- int i;
- uint8_t *config = s->dev.config;
- uint32_t reg_field = pci_get_byte(config + real_offset);
+ int i, rc;
+ uint8_t reg_field;
uint8_t cap_id = 0;
+ rc = xen_host_pci_get_byte(&s->real_device, real_offset, &reg_field);
+ if (rc) {
+ return rc;
+ }
/* find capability offset */
while (reg_field) {
for (i = 0; xen_pt_emu_reg_grps[i].grp_size != 0; i++) {
@@ -1752,7 +1825,13 @@ static int xen_pt_ptr_reg_init(XenPCIPassthroughState *s,
continue;
}
- cap_id = pci_get_byte(config + reg_field + PCI_CAP_LIST_ID);
+ rc = xen_host_pci_get_byte(&s->real_device,
+ reg_field + PCI_CAP_LIST_ID, &cap_id);
+ if (rc) {
+ XEN_PT_ERR(&s->dev, "Failed to read capability @0x%x (rc:%d)\n",
+ reg_field + PCI_CAP_LIST_ID, rc);
+ return rc;
+ }
if (xen_pt_emu_reg_grps[i].grp_id == cap_id) {
if (xen_pt_emu_reg_grps[i].grp_type == XEN_PT_GRP_TYPE_EMU) {
goto out;
@@ -1763,7 +1842,11 @@ static int xen_pt_ptr_reg_init(XenPCIPassthroughState *s,
}
/* next capability */
- reg_field = pci_get_byte(config + reg_field + PCI_CAP_LIST_NEXT);
+ rc = xen_host_pci_get_byte(&s->real_device,
+ reg_field + PCI_CAP_LIST_NEXT, &reg_field);
+ if (rc) {
+ return rc;
+ }
}
out:
@@ -1779,7 +1862,7 @@ out:
static uint8_t find_cap_offset(XenPCIPassthroughState *s, uint8_t cap)
{
uint8_t id;
- unsigned max_cap = PCI_CAP_MAX;
+ unsigned max_cap = XEN_PCI_CAP_MAX;
uint8_t pos = PCI_CAPABILITY_LIST;
uint8_t status = 0;
@@ -1827,6 +1910,10 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
reg_entry->reg = reg;
if (reg->init) {
+ uint32_t host_mask, size_mask;
+ unsigned int offset;
+ uint32_t val;
+
/* initialize emulate register */
rc = reg->init(s, reg_entry->reg,
reg_grp->base_offset + reg->offset, &data);
@@ -1839,8 +1926,67 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s,
g_free(reg_entry);
return 0;
}
- /* set register value */
- reg_entry->data = data;
+ /* Sync up the data to dev.config */
+ offset = reg_grp->base_offset + reg->offset;
+ size_mask = 0xFFFFFFFF >> ((4 - reg->size) << 3);
+
+ switch (reg->size) {
+ case 1: rc = xen_host_pci_get_byte(&s->real_device, offset, (uint8_t *)&val);
+ break;
+ case 2: rc = xen_host_pci_get_word(&s->real_device, offset, (uint16_t *)&val);
+ break;
+ case 4: rc = xen_host_pci_get_long(&s->real_device, offset, &val);
+ break;
+ default: assert(1);
+ }
+ if (rc) {
+ /* Serious issues when we cannot read the host values! */
+ g_free(reg_entry);
+ return rc;
+ }
+ /* Set bits in emu_mask are the ones we emulate. The dev.config shall
+ * contain the emulated view of the guest - therefore we flip the mask
+ * to mask out the host values (which dev.config initially has) . */
+ host_mask = size_mask & ~reg->emu_mask;
+
+ if ((data & host_mask) != (val & host_mask)) {
+ uint32_t new_val;
+
+ /* Mask out host (including past size). */
+ new_val = val & host_mask;
+ /* Merge emulated ones (excluding the non-emulated ones). */
+ new_val |= data & host_mask;
+ /* Leave intact host and emulated values past the size - even though
+ * we do not care as we write per reg->size granularity, but for the
+ * logging below lets have the proper value. */
+ new_val |= ((val | data)) & ~size_mask;
+ XEN_PT_LOG(&s->dev,"Offset 0x%04x mismatch! Emulated=0x%04x, host=0x%04x, syncing to 0x%04x.\n",
+ offset, data, val, new_val);
+ val = new_val;
+ } else
+ val = data;
+
+ if (val & ~size_mask) {
+ XEN_PT_ERR(&s->dev,"Offset 0x%04x:0x%04x expands past register size(%d)!\n",
+ offset, val, reg->size);
+ g_free(reg_entry);
+ return -ENXIO;
+ }
+ /* This could be just pci_set_long as we don't modify the bits
+ * past reg->size, but in case this routine is run in parallel or the
+ * init value is larger, we do not want to over-write registers. */
+ switch (reg->size) {
+ case 1: pci_set_byte(s->dev.config + offset, (uint8_t)val);
+ break;
+ case 2: pci_set_word(s->dev.config + offset, (uint16_t)val);
+ break;
+ case 4: pci_set_long(s->dev.config + offset, val);
+ break;
+ default: assert(1);
+ }
+ /* set register value pointer to the data. */
+ reg_entry->ptr.byte = s->dev.config + offset;
+
}
/* list add register entry */
QLIST_INSERT_HEAD(&reg_grp->reg_tbl_list, reg_entry, entries);
@@ -1858,7 +2004,8 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
uint32_t reg_grp_offset = 0;
XenPTRegGroup *reg_grp_entry = NULL;
- if (xen_pt_emu_reg_grps[i].grp_id != 0xFF) {
+ if (xen_pt_emu_reg_grps[i].grp_id != 0xFF
+ && xen_pt_emu_reg_grps[i].grp_id != XEN_PCI_INTEL_OPREGION) {
if (xen_pt_hide_dev_cap(&s->real_device,
xen_pt_emu_reg_grps[i].grp_id)) {
continue;
@@ -1871,6 +2018,15 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
}
}
+ /*
+ * By default we will trap up to 0x40 in the cfg space.
+ * If an intel device is pass through we need to trap 0xfc,
+ * therefore the size should be 0xff.
+ */
+ if (xen_pt_emu_reg_grps[i].grp_id == XEN_PCI_INTEL_OPREGION) {
+ reg_grp_offset = XEN_PCI_INTEL_OPREGION;
+ }
+
reg_grp_entry = g_new0(XenPTRegGroup, 1);
QLIST_INIT(&reg_grp_entry->reg_tbl_list);
QLIST_INSERT_HEAD(&s->reg_grps, reg_grp_entry, entries);
@@ -1883,6 +2039,9 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
reg_grp_offset,
&reg_grp_entry->size);
if (rc < 0) {
+ XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld, type=0x%x, rc:%d\n",
+ i, ARRAY_SIZE(xen_pt_emu_reg_grps),
+ xen_pt_emu_reg_grps[i].grp_type, rc);
xen_pt_config_delete(s);
return rc;
}
@@ -1897,6 +2056,10 @@ int xen_pt_config_init(XenPCIPassthroughState *s)
/* initialize capability register */
rc = xen_pt_config_reg_init(s, reg_grp_entry, regs);
if (rc < 0) {
+ XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld reg 0x%x in grp_type=0x%x (%d/%ld), rc=%d\n",
+ j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs),
+ regs->offset, xen_pt_emu_reg_grps[i].grp_type,
+ i, ARRAY_SIZE(xen_pt_emu_reg_grps), rc);
xen_pt_config_delete(s);
return rc;
}
diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c
new file mode 100644
index 0000000000..df6069bf63
--- /dev/null
+++ b/hw/xen/xen_pt_graphics.c
@@ -0,0 +1,272 @@
+/*
+ * graphics passthrough
+ */
+#include "xen_pt.h"
+#include "xen-host-pci-device.h"
+#include "hw/xen/xen_backend.h"
+
+static unsigned long igd_guest_opregion;
+static unsigned long igd_host_opregion;
+
+#define XEN_PCI_INTEL_OPREGION_MASK 0xfff
+
+typedef struct VGARegion {
+ int type; /* Memory or port I/O */
+ uint64_t guest_base_addr;
+ uint64_t machine_base_addr;
+ uint64_t size; /* size of the region */
+ int rc;
+} VGARegion;
+
+#define IORESOURCE_IO 0x00000100
+#define IORESOURCE_MEM 0x00000200
+
+static struct VGARegion vga_args[] = {
+ {
+ .type = IORESOURCE_IO,
+ .guest_base_addr = 0x3B0,
+ .machine_base_addr = 0x3B0,
+ .size = 0xC,
+ .rc = -1,
+ },
+ {
+ .type = IORESOURCE_IO,
+ .guest_base_addr = 0x3C0,
+ .machine_base_addr = 0x3C0,
+ .size = 0x20,
+ .rc = -1,
+ },
+ {
+ .type = IORESOURCE_MEM,
+ .guest_base_addr = 0xa0000 >> XC_PAGE_SHIFT,
+ .machine_base_addr = 0xa0000 >> XC_PAGE_SHIFT,
+ .size = 0x20,
+ .rc = -1,
+ },
+};
+
+/*
+ * register VGA resources for the domain with assigned gfx
+ */
+int xen_pt_register_vga_regions(XenHostPCIDevice *dev)
+{
+ int i = 0;
+
+ if (!is_igd_vga_passthrough(dev)) {
+ return 0;
+ }
+
+ for (i = 0 ; i < ARRAY_SIZE(vga_args); i++) {
+ if (vga_args[i].type == IORESOURCE_IO) {
+ vga_args[i].rc = xc_domain_ioport_mapping(xen_xc, xen_domid,
+ vga_args[i].guest_base_addr,
+ vga_args[i].machine_base_addr,
+ vga_args[i].size, DPCI_ADD_MAPPING);
+ } else {
+ vga_args[i].rc = xc_domain_memory_mapping(xen_xc, xen_domid,
+ vga_args[i].guest_base_addr,
+ vga_args[i].machine_base_addr,
+ vga_args[i].size, DPCI_ADD_MAPPING);
+ }
+
+ if (vga_args[i].rc) {
+ XEN_PT_ERR(NULL, "VGA %s mapping failed! (rc: %i)\n",
+ vga_args[i].type == IORESOURCE_IO ? "ioport" : "memory",
+ vga_args[i].rc);
+ return vga_args[i].rc;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * unregister VGA resources for the domain with assigned gfx
+ */
+int xen_pt_unregister_vga_regions(XenHostPCIDevice *dev)
+{
+ int i = 0;
+ int ret = 0;
+
+ if (!is_igd_vga_passthrough(dev)) {
+ return 0;
+ }
+
+ for (i = 0 ; i < ARRAY_SIZE(vga_args); i++) {
+ if (vga_args[i].type == IORESOURCE_IO) {
+ vga_args[i].rc = xc_domain_ioport_mapping(xen_xc, xen_domid,
+ vga_args[i].guest_base_addr,
+ vga_args[i].machine_base_addr,
+ vga_args[i].size, DPCI_REMOVE_MAPPING);
+ } else {
+ vga_args[i].rc = xc_domain_memory_mapping(xen_xc, xen_domid,
+ vga_args[i].guest_base_addr,
+ vga_args[i].machine_base_addr,
+ vga_args[i].size, DPCI_REMOVE_MAPPING);
+ }
+
+ if (vga_args[i].rc) {
+ XEN_PT_ERR(NULL, "VGA %s unmapping failed! (rc: %i)\n",
+ vga_args[i].type == IORESOURCE_IO ? "ioport" : "memory",
+ vga_args[i].rc);
+ return vga_args[i].rc;
+ }
+ }
+
+ if (igd_guest_opregion) {
+ ret = xc_domain_memory_mapping(xen_xc, xen_domid,
+ (unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT),
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
+ 3,
+ DPCI_REMOVE_MAPPING);
+ if (ret) {
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void *get_vgabios(XenPCIPassthroughState *s, int *size,
+ XenHostPCIDevice *dev)
+{
+ return pci_assign_dev_load_option_rom(&s->dev, OBJECT(&s->dev), size,
+ dev->domain, dev->bus,
+ dev->dev, dev->func);
+}
+
+/* Refer to Seabios. */
+struct rom_header {
+ uint16_t signature;
+ uint8_t size;
+ uint8_t initVector[4];
+ uint8_t reserved[17];
+ uint16_t pcioffset;
+ uint16_t pnpoffset;
+} __attribute__((packed));
+
+struct pci_data {
+ uint32_t signature;
+ uint16_t vendor;
+ uint16_t device;
+ uint16_t vitaldata;
+ uint16_t dlen;
+ uint8_t drevision;
+ uint8_t class_lo;
+ uint16_t class_hi;
+ uint16_t ilen;
+ uint16_t irevision;
+ uint8_t type;
+ uint8_t indicator;
+ uint16_t reserved;
+} __attribute__((packed));
+
+int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev)
+{
+ unsigned char *bios = NULL;
+ struct rom_header *rom;
+ int bios_size;
+ char *c = NULL;
+ char checksum = 0;
+ uint32_t len = 0;
+ struct pci_data *pd = NULL;
+
+ if (!is_igd_vga_passthrough(dev)) {
+ return -1;
+ }
+
+ bios = get_vgabios(s, &bios_size, dev);
+ if (!bios) {
+ XEN_PT_ERR(&s->dev, "VGA: Can't getting VBIOS!\n");
+ return -1;
+ }
+
+ /* Currently we fixed this address as a primary. */
+ rom = (struct rom_header *)bios;
+ pd = (void *)(bios + (unsigned char)rom->pcioffset);
+
+ /* We may need to fixup Device Identification. */
+ if (pd->device != s->real_device.device_id) {
+ pd->device = s->real_device.device_id;
+
+ len = rom->size * 512;
+ /* Then adjust the bios checksum */
+ for (c = (char *)bios; c < ((char *)bios + len); c++) {
+ checksum += *c;
+ }
+ if (checksum) {
+ bios[len - 1] -= checksum;
+ XEN_PT_LOG(&s->dev, "vga bios checksum is adjusted %x!\n",
+ checksum);
+ }
+ }
+
+ /* Currently we fixed this address as a primary for legacy BIOS. */
+ cpu_physical_memory_rw(0xc0000, bios, bios_size, 1);
+ return 0;
+}
+
+uint32_t igd_read_opregion(XenPCIPassthroughState *s)
+{
+ uint32_t val = 0;
+
+ if (!igd_guest_opregion) {
+ return val;
+ }
+
+ val = igd_guest_opregion;
+
+ XEN_PT_LOG(&s->dev, "Read opregion val=%x\n", val);
+ return val;
+}
+
+#define XEN_PCI_INTEL_OPREGION_PAGES 0x3
+#define XEN_PCI_INTEL_OPREGION_ENABLE_ACCESSED 0x1
+void igd_write_opregion(XenPCIPassthroughState *s, uint32_t val)
+{
+ int ret;
+
+ if (igd_guest_opregion) {
+ XEN_PT_LOG(&s->dev, "opregion register already been set, ignoring %x\n",
+ val);
+ return;
+ }
+
+ /* We just work with LE. */
+ xen_host_pci_get_block(&s->real_device, XEN_PCI_INTEL_OPREGION,
+ (uint8_t *)&igd_host_opregion, 4);
+ igd_guest_opregion = (unsigned long)(val & ~XEN_PCI_INTEL_OPREGION_MASK)
+ | (igd_host_opregion & XEN_PCI_INTEL_OPREGION_MASK);
+
+ ret = xc_domain_iomem_permission(xen_xc, xen_domid,
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
+ XEN_PCI_INTEL_OPREGION_PAGES,
+ XEN_PCI_INTEL_OPREGION_ENABLE_ACCESSED);
+
+ if (ret) {
+ XEN_PT_ERR(&s->dev, "[%d]:Can't enable to access IGD host opregion:"
+ " 0x%lx.\n", ret,
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT)),
+ igd_guest_opregion = 0;
+ return;
+ }
+
+ ret = xc_domain_memory_mapping(xen_xc, xen_domid,
+ (unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT),
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
+ XEN_PCI_INTEL_OPREGION_PAGES,
+ DPCI_ADD_MAPPING);
+
+ if (ret) {
+ XEN_PT_ERR(&s->dev, "[%d]:Can't map IGD host opregion:0x%lx to"
+ " guest opregion:0x%lx.\n", ret,
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
+ (unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT));
+ igd_guest_opregion = 0;
+ return;
+ }
+
+ XEN_PT_LOG(&s->dev, "Map OpRegion: 0x%lx -> 0x%lx\n",
+ (unsigned long)(igd_host_opregion >> XC_PAGE_SHIFT),
+ (unsigned long)(igd_guest_opregion >> XC_PAGE_SHIFT));
+}
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c
index 263e0514a2..e3d71945cd 100644
--- a/hw/xen/xen_pt_msi.c
+++ b/hw/xen/xen_pt_msi.c
@@ -75,19 +75,29 @@ static int msi_msix_enable(XenPCIPassthroughState *s,
bool enable)
{
uint16_t val = 0;
+ int rc;
if (!address) {
return -1;
}
- xen_host_pci_get_word(&s->real_device, address, &val);
+ rc = xen_host_pci_get_word(&s->real_device, address, &val);
+ if (rc) {
+ XEN_PT_ERR(&s->dev, "Failed to read MSI/MSI-X register (0x%x), rc:%d\n",
+ address, rc);
+ return rc;
+ }
if (enable) {
val |= flag;
} else {
val &= ~flag;
}
- xen_host_pci_set_word(&s->real_device, address, val);
- return 0;
+ rc = xen_host_pci_set_word(&s->real_device, address, val);
+ if (rc) {
+ XEN_PT_ERR(&s->dev, "Failed to write MSI/MSI-X register (0x%x), rc:%d\n",
+ address, rc);
+ }
+ return rc;
}
static int msi_msix_setup(XenPCIPassthroughState *s,
@@ -220,7 +230,7 @@ static int msi_msix_disable(XenPCIPassthroughState *s,
* MSI virtualization functions
*/
-int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool enable)
+static int xen_pt_msi_set_enable(XenPCIPassthroughState *s, bool enable)
{
XEN_PT_LOG(&s->dev, "%s MSI.\n", enable ? "enabling" : "disabling");
@@ -276,7 +286,7 @@ void xen_pt_msi_disable(XenPCIPassthroughState *s)
return;
}
- xen_pt_msi_set_enable(s, false);
+ (void)xen_pt_msi_set_enable(s, false);
msi_msix_disable(s, msi_addr64(msi), msi->data, msi->pirq, false,
msi->initialized);
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 3f84afdf1c..566a5cad13 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -137,6 +137,7 @@ struct MachineState {
bool mem_merge;
bool usb;
bool usb_disabled;
+ bool igd_gfx_passthru;
char *firmware;
bool iommu;
bool suppress_vmdesc;
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index ff0b48bf58..3e002c9da6 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -220,7 +220,13 @@ extern int no_hpet;
struct PCII440FXState;
typedef struct PCII440FXState PCII440FXState;
-PCIBus *i440fx_init(PCII440FXState **pi440fx_state, int *piix_devfn,
+#define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost"
+#define TYPE_I440FX_PCI_DEVICE "i440FX"
+
+#define TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE "igd-passthrough-i440FX"
+
+PCIBus *i440fx_init(const char *host_type, const char *pci_type,
+ PCII440FXState **pi440fx_state, int *piix_devfn,
ISABus **isa_bus, qemu_irq *pic,
MemoryRegion *address_space_mem,
MemoryRegion *address_space_io,
@@ -721,4 +727,5 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
(m)->compat_props = props; \
} while (0)
+extern void igd_passthrough_isa_bridge_create(PCIBus *bus, uint16_t gpu_dev_id);
#endif
diff --git a/include/hw/pci/pci-assign.h b/include/hw/pci/pci-assign.h
new file mode 100644
index 0000000000..55f42c56fa
--- /dev/null
+++ b/include/hw/pci/pci-assign.h
@@ -0,0 +1,27 @@
+/*
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Just split from hw/i386/kvm/pci-assign.c.
+ */
+#ifndef PCI_ASSIGN_H
+#define PCI_ASSIGN_H
+
+#include "hw/pci/pci.h"
+
+//#define DEVICE_ASSIGNMENT_DEBUG
+
+#ifdef DEVICE_ASSIGNMENT_DEBUG
+#define DEBUG(fmt, ...) \
+ do { \
+ fprintf(stderr, "%s: " fmt, __func__ , __VA_ARGS__); \
+ } while (0)
+#else
+#define DEBUG(fmt, ...)
+#endif
+
+void *pci_assign_dev_load_option_rom(PCIDevice *dev, struct Object *owner,
+ int *size, unsigned int domain,
+ unsigned int bus, unsigned int slot,
+ unsigned int function);
+#endif /* PCI_ASSIGN_H */
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
index ed5fd3e1a2..d7fa6a4d01 100644
--- a/include/hw/xen/xen_common.h
+++ b/include/hw/xen/xen_common.h
@@ -186,6 +186,15 @@ static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
}
#endif
+/* Xen before 4.6 */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
+
+#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
+#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
+#endif
+
+#endif
+
/* Xen before 4.5 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
@@ -370,7 +379,8 @@ static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
ioservid_t *ioservid)
{
- int rc = xc_hvm_create_ioreq_server(xc, dom, 1, ioservid);
+ int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
+ ioservid);
if (rc == 0) {
trace_xen_ioreq_server_create(*ioservid);
@@ -407,4 +417,26 @@ static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
#endif
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
+static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
+ unsigned int space,
+ unsigned long idx,
+ xen_pfn_t gpfn)
+{
+ return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
+}
+#else
+static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
+ unsigned int space,
+ unsigned long idx,
+ xen_pfn_t gpfn)
+{
+ /* In Xen 4.6 rc is -1 and errno contains the error value. */
+ int rc = xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
+ if (rc == -1)
+ return errno;
+ return rc;
+}
+#endif
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/qemu-options.hx b/qemu-options.hx
index efce775f66..b2f9dce0d5 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -38,6 +38,7 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
" dump-guest-core=on|off include guest memory in a core dump (default=on)\n"
" mem-merge=on|off controls memory merge support (default: on)\n"
" iommu=on|off controls emulated Intel IOMMU (VT-d) support (default=off)\n"
+ " igd-passthru=on|off controls IGD GFX passthrough support (default=off)\n"
" aes-key-wrap=on|off controls support for AES key wrapping (default=on)\n"
" dea-key-wrap=on|off controls support for DEA key wrapping (default=on)\n"
" suppress-vmdesc=on|off disables self-describing migration (default=off)\n",
@@ -55,6 +56,8 @@ than one accelerator specified, the next one is used if the previous one fails
to initialize.
@item kernel_irqchip=on|off
Enables in-kernel irqchip support for the chosen accelerator when available.
+@item gfx_passthru=on|off
+Enables IGD GFX passthrough support for the chosen machine when available.
@item vmport=on|off|auto
Enables emulation of VMWare IO port, for vmmouse etc. auto says to select the
value based on accel. For accel=xen the default is off otherwise the default
diff --git a/trace-events b/trace-events
index 1684a9530f..1927c764a9 100644
--- a/trace-events
+++ b/trace-events
@@ -936,6 +936,13 @@ xen_map_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %
xen_unmap_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
xen_map_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
xen_unmap_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
+handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
+cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
+cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want %#"PRIx64
diff --git a/vl.c b/vl.c
index 584ca88dda..76e0bb2a89 100644
--- a/vl.c
+++ b/vl.c
@@ -1338,6 +1338,13 @@ static inline void semihosting_arg_fallback(const char *file, const char *cmd)
}
}
+/* Now we still need this for compatibility with XEN. */
+bool has_igd_gfx_passthru;
+static void igd_gfx_passthru(void)
+{
+ has_igd_gfx_passthru = current_machine->igd_gfx_passthru;
+}
+
/***********************************************************/
/* USB devices */
@@ -4528,6 +4535,9 @@ int main(int argc, char **argv, char **envp)
exit(1);
}
+ /* Check if IGD GFX passthrough. */
+ igd_gfx_passthru();
+
/* init generic devices */
if (qemu_opts_foreach(qemu_find_opts("device"),
device_init_func, NULL, NULL)) {
diff --git a/xen-hvm.c b/xen-hvm.c
index 55bce3ae12..5ea621e7b7 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -344,10 +344,10 @@ go_physmap:
unsigned long idx = pfn + i;
xen_pfn_t gpfn = start_gpfn + i;
- rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
+ rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
if (rc) {
DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
- PRI_xen_pfn" failed: %d\n", idx, gpfn, rc);
+ PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc, errno);
return -rc;
}
}
@@ -421,10 +421,10 @@ static int xen_remove_from_physmap(XenIOState *state,
xen_pfn_t idx = start_addr + i;
xen_pfn_t gpfn = phys_offset + i;
- rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
+ rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
if (rc) {
fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
- PRI_xen_pfn" failed: %d\n", idx, gpfn, rc);
+ PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc, errno);
return -rc;
}
}
@@ -813,9 +813,14 @@ static void cpu_ioreq_pio(ioreq_t *req)
{
uint32_t i;
+ trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
if (req->dir == IOREQ_READ) {
if (!req->data_is_ptr) {
req->data = do_inp(req->addr, req->size);
+ trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
+ req->size);
} else {
uint32_t tmp;
@@ -826,6 +831,8 @@ static void cpu_ioreq_pio(ioreq_t *req)
}
} else if (req->dir == IOREQ_WRITE) {
if (!req->data_is_ptr) {
+ trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
+ req->size);
do_outp(req->addr, req->size, req->data);
} else {
for (i = 0; i < req->count; i++) {
@@ -842,6 +849,9 @@ static void cpu_ioreq_move(ioreq_t *req)
{
uint32_t i;
+ trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
if (!req->data_is_ptr) {
if (req->dir == IOREQ_READ) {
for (i = 0; i < req->count; i++) {
@@ -914,11 +924,18 @@ static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
static void handle_ioreq(XenIOState *state, ioreq_t *req)
{
+ trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
(req->size < sizeof (target_ulong))) {
req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
}
+ if (req->dir == IOREQ_WRITE)
+ trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
switch (req->type) {
case IOREQ_TYPE_PIO:
cpu_ioreq_pio(req);
@@ -958,23 +975,38 @@ static void handle_ioreq(XenIOState *state, ioreq_t *req)
default:
hw_error("Invalid ioreq type 0x%x\n", req->type);
}
+ if (req->dir == IOREQ_READ) {
+ trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+ }
}
static int handle_buffered_iopage(XenIOState *state)
{
+ buffered_iopage_t *buf_page = state->buffered_io_page;
buf_ioreq_t *buf_req = NULL;
ioreq_t req;
int qw;
- if (!state->buffered_io_page) {
+ if (!buf_page) {
return 0;
}
memset(&req, 0x00, sizeof(req));
- while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) {
- buf_req = &state->buffered_io_page->buf_ioreq[
- state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM];
+ for (;;) {
+ uint32_t rdptr = buf_page->read_pointer, wrptr;
+
+ xen_rmb();
+ wrptr = buf_page->write_pointer;
+ xen_rmb();
+ if (rdptr != buf_page->read_pointer) {
+ continue;
+ }
+ if (rdptr == wrptr) {
+ break;
+ }
+ buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
req.size = 1UL << buf_req->size;
req.count = 1;
req.addr = buf_req->addr;
@@ -986,15 +1018,14 @@ static int handle_buffered_iopage(XenIOState *state)
req.data_is_ptr = 0;
qw = (req.size == 8);
if (qw) {
- buf_req = &state->buffered_io_page->buf_ioreq[
- (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM];
+ buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
+ IOREQ_BUFFER_SLOT_NUM];
req.data |= ((uint64_t)buf_req->data) << 32;
}
handle_ioreq(state, &req);
- xen_mb();
- state->buffered_io_page->read_pointer += qw ? 2 : 1;
+ atomic_add(&buf_page->read_pointer, qw + 1);
}
return req.count;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 09:08:32 +0000