We plan to reuse build_x86_acpi_pci_hotplug() implementation
for ARM so let's move the code to generic pcihp.
Associated static aml_pci_pdsm() helper is also moved along.
build_x86_acpi_pci_hotplug is renamed into build_acpi_pci_hotplug().
No code change intended.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
hw/i386/acpi-build.h | 4 -
include/hw/acpi/pcihp.h | 6 ++
hw/acpi/pcihp.c | 174 +++++++++++++++++++++++++++++++++++++++-
hw/i386/acpi-build.c | 150 +---------------------------------
4 files changed, 181 insertions(+), 153 deletions(-)
diff --git a/hw/i386/acpi-build.h b/hw/i386/acpi-build.h
index 0dce155c8c..8ba3c33e48 100644
--- a/hw/i386/acpi-build.h
+++ b/hw/i386/acpi-build.h
@@ -5,10 +5,6 @@
extern const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio;
-/* PCI Hot-plug registers bases. See docs/spec/acpi_pci_hotplug.txt */
-#define ACPI_PCIHP_SEJ_BASE 0x8
-#define ACPI_PCIHP_BNMR_BASE 0x10
-
void acpi_setup(void);
Object *acpi_get_i386_pci_host(void);
diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h
index ac21a95913..2da0bc45c9 100644
--- a/include/hw/acpi/pcihp.h
+++ b/include/hw/acpi/pcihp.h
@@ -33,6 +33,10 @@
#define ACPI_PCIHP_IO_BASE_PROP "acpi-pcihp-io-base"
#define ACPI_PCIHP_IO_LEN_PROP "acpi-pcihp-io-len"
+/* PCI Hot-plug registers bases. See docs/spec/acpi_pci_hotplug.txt */
+#define ACPI_PCIHP_SEJ_BASE 0x8
+#define ACPI_PCIHP_BNMR_BASE 0x10
+
typedef struct AcpiPciHpPciStatus {
uint32_t up;
uint32_t down;
@@ -69,6 +73,8 @@ void acpi_pcihp_device_unplug_request_cb(HotplugHandler
*hotplug_dev,
AcpiPciHpState *s, DeviceState *dev,
Error **errp);
+void build_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr);
+
/* Called on reset */
void acpi_pcihp_reset(AcpiPciHpState *s);
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 5f79c9016b..35d8c0bfd2 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -26,7 +26,7 @@
#include "qemu/osdep.h"
#include "hw/acpi/pcihp.h"
-
+#include "hw/acpi/aml-build.h"
#include "hw/pci-host/i440fx.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_bridge.h"
@@ -513,6 +513,178 @@ void acpi_pcihp_init(Object *owner, AcpiPciHpState *s,
PCIBus *root_bus,
OBJ_PROP_FLAG_READ);
}
+static void build_append_pci_dsm_func0_common(Aml *ctx, Aml *retvar)
+{
+ Aml *UUID, *ifctx1;
+ uint8_t byte_list[1] = { 0 }; /* nothing supported yet */
+
+ aml_append(ctx, aml_store(aml_buffer(1, byte_list), retvar));
+ /*
+ * PCI Firmware Specification 3.1
+ * 4.6. _DSM Definitions for PCI
+ */
+ UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
+ ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID)));
+ {
+ /* call is for unsupported UUID, bail out */
+ aml_append(ifctx1, aml_return(retvar));
+ }
+ aml_append(ctx, ifctx1);
+
+ ifctx1 = aml_if(aml_lless(aml_arg(1), aml_int(2)));
+ {
+ /* call is for unsupported REV, bail out */
+ aml_append(ifctx1, aml_return(retvar));
+ }
+ aml_append(ctx, ifctx1);
+}
+
+static Aml *aml_pci_pdsm(void)
+{
+ Aml *method, *ifctx, *ifctx1;
+ Aml *ret = aml_local(0);
+ Aml *caps = aml_local(1);
+ Aml *acpi_index = aml_local(2);
+ Aml *zero = aml_int(0);
+ Aml *one = aml_int(1);
+ Aml *not_supp = aml_int(0xFFFFFFFF);
+ Aml *func = aml_arg(2);
+ Aml *params = aml_arg(4);
+ Aml *bnum = aml_derefof(aml_index(params, aml_int(0)));
+ Aml *sunum = aml_derefof(aml_index(params, aml_int(1)));
+
+ method = aml_method("PDSM", 5, AML_SERIALIZED);
+
+ /* get supported functions */
+ ifctx = aml_if(aml_equal(func, zero));
+ {
+ build_append_pci_dsm_func0_common(ifctx, ret);
+
+ aml_append(ifctx, aml_store(zero, caps));
+ aml_append(ifctx,
+ aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
+ /*
+ * advertise function 7 if device has acpi-index
+ * acpi_index values:
+ * 0: not present (default value)
+ * FFFFFFFF: not supported (old QEMU without PIDX reg)
+ * other: device's acpi-index
+ */
+ ifctx1 = aml_if(aml_lnot(
+ aml_or(aml_equal(acpi_index, zero),
+ aml_equal(acpi_index, not_supp), NULL)
+ ));
+ {
+ /* have supported functions */
+ aml_append(ifctx1, aml_or(caps, one, caps));
+ /* support for function 7 */
+ aml_append(ifctx1,
+ aml_or(caps, aml_shiftleft(one, aml_int(7)), caps));
+ }
+ aml_append(ifctx, ifctx1);
+
+ aml_append(ifctx, aml_store(caps, aml_index(ret, zero)));
+ aml_append(ifctx, aml_return(ret));
+ }
+ aml_append(method, ifctx);
+
+ /* handle specific functions requests */
+ /*
+ * PCI Firmware Specification 3.1
+ * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under
+ * Operating Systems
+ */
+ ifctx = aml_if(aml_equal(func, aml_int(7)));
+ {
+ Aml *pkg = aml_package(2);
+
+ aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum),
acpi_index));
+ aml_append(ifctx, aml_store(pkg, ret));
+ /*
+ * Windows calls func=7 without checking if it's available,
+ * as workaround Microsoft has suggested to return invalid for func7
+ * Package, so return 2 elements package but only initialize elements
+ * when acpi_index is supported and leave them uninitialized, which
+ * leads elements to being Uninitialized ObjectType and should trip
+ * Windows into discarding result as an unexpected and prevent setting
+ * bogus 'PCI Label' on the device.
+ */
+ ifctx1 = aml_if(aml_lnot(aml_lor(
+ aml_equal(acpi_index, zero), aml_equal(acpi_index,
not_supp)
+ )));
+ {
+ aml_append(ifctx1, aml_store(acpi_index, aml_index(ret, zero)));
+ /*
+ * optional, if not impl. should return null string
+ */
+ aml_append(ifctx1, aml_store(aml_string("%s", ""),
+ aml_index(ret, one)));
+ }
+ aml_append(ifctx, ifctx1);
+
+ aml_append(ifctx, aml_return(ret));
+ }
+
+ aml_append(method, ifctx);
+ return method;
+}
+
+void build_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr)
+{
+ Aml *scope;
+ Aml *field;
+ Aml *method;
+
+ scope = aml_scope("_SB.PCI0");
+
+ aml_append(scope,
+ aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr),
0x08));
+ field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
+ aml_append(field, aml_named_field("PCIU", 32));
+ aml_append(field, aml_named_field("PCID", 32));
+ aml_append(scope, field);
+
+ aml_append(scope,
+ aml_operation_region("SEJ", AML_SYSTEM_IO,
+ aml_int(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 0x04));
+ field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
+ aml_append(field, aml_named_field("B0EJ", 32));
+ aml_append(scope, field);
+
+ aml_append(scope,
+ aml_operation_region("BNMR", AML_SYSTEM_IO,
+ aml_int(pcihp_addr + ACPI_PCIHP_BNMR_BASE),
0x08));
+ field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
+ aml_append(field, aml_named_field("BNUM", 32));
+ aml_append(field, aml_named_field("PIDX", 32));
+ aml_append(scope, field);
+
+ aml_append(scope, aml_mutex("BLCK", 0));
+
+ method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
+ aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
+ aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
+ aml_append(method,
+ aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
+ aml_append(method, aml_release(aml_name("BLCK")));
+ aml_append(method, aml_return(aml_int(0)));
+ aml_append(scope, method);
+
+ method = aml_method("AIDX", 2, AML_NOTSERIALIZED);
+ aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
+ aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
+ aml_append(method,
+ aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("PIDX")));
+ aml_append(method, aml_store(aml_name("PIDX"), aml_local(0)));
+ aml_append(method, aml_release(aml_name("BLCK")));
+ aml_append(method, aml_return(aml_local(0)));
+ aml_append(scope, method);
+
+ aml_append(scope, aml_pci_pdsm());
+
+ aml_append(table, scope);
+}
+
const VMStateDescription vmstate_acpi_pcihp_pci_status = {
.name = "acpi_pcihp_pci_status",
.version_id = 1,
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 864f6b5bf8..2d1eea4a1a 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -647,96 +647,6 @@ static bool build_append_notification_callback(Aml
*parent_scope,
return !!nr_notifiers;
}
-static Aml *aml_pci_pdsm(void)
-{
- Aml *method, *ifctx, *ifctx1;
- Aml *ret = aml_local(0);
- Aml *caps = aml_local(1);
- Aml *acpi_index = aml_local(2);
- Aml *zero = aml_int(0);
- Aml *one = aml_int(1);
- Aml *not_supp = aml_int(0xFFFFFFFF);
- Aml *func = aml_arg(2);
- Aml *params = aml_arg(4);
- Aml *bnum = aml_derefof(aml_index(params, aml_int(0)));
- Aml *sunum = aml_derefof(aml_index(params, aml_int(1)));
-
- method = aml_method("PDSM", 5, AML_SERIALIZED);
-
- /* get supported functions */
- ifctx = aml_if(aml_equal(func, zero));
- {
- build_append_pci_dsm_func0_common(ifctx, ret);
-
- aml_append(ifctx, aml_store(zero, caps));
- aml_append(ifctx,
- aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
- /*
- * advertise function 7 if device has acpi-index
- * acpi_index values:
- * 0: not present (default value)
- * FFFFFFFF: not supported (old QEMU without PIDX reg)
- * other: device's acpi-index
- */
- ifctx1 = aml_if(aml_lnot(
- aml_or(aml_equal(acpi_index, zero),
- aml_equal(acpi_index, not_supp), NULL)
- ));
- {
- /* have supported functions */
- aml_append(ifctx1, aml_or(caps, one, caps));
- /* support for function 7 */
- aml_append(ifctx1,
- aml_or(caps, aml_shiftleft(one, aml_int(7)), caps));
- }
- aml_append(ifctx, ifctx1);
-
- aml_append(ifctx, aml_store(caps, aml_index(ret, zero)));
- aml_append(ifctx, aml_return(ret));
- }
- aml_append(method, ifctx);
-
- /* handle specific functions requests */
- /*
- * PCI Firmware Specification 3.1
- * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under
- * Operating Systems
- */
- ifctx = aml_if(aml_equal(func, aml_int(7)));
- {
- Aml *pkg = aml_package(2);
-
- aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum),
acpi_index));
- aml_append(ifctx, aml_store(pkg, ret));
- /*
- * Windows calls func=7 without checking if it's available,
- * as workaround Microsoft has suggested to return invalid for func7
- * Package, so return 2 elements package but only initialize elements
- * when acpi_index is supported and leave them uninitialized, which
- * leads elements to being Uninitialized ObjectType and should trip
- * Windows into discarding result as an unexpected and prevent setting
- * bogus 'PCI Label' on the device.
- */
- ifctx1 = aml_if(aml_lnot(aml_lor(
- aml_equal(acpi_index, zero), aml_equal(acpi_index,
not_supp)
- )));
- {
- aml_append(ifctx1, aml_store(acpi_index, aml_index(ret, zero)));
- /*
- * optional, if not impl. should return null string
- */
- aml_append(ifctx1, aml_store(aml_string("%s", ""),
- aml_index(ret, one)));
- }
- aml_append(ifctx, ifctx1);
-
- aml_append(ifctx, aml_return(ret));
- }
-
- aml_append(method, ifctx);
- return method;
-}
-
/*
* build_prt - Define interrupt routing rules
*
@@ -1227,62 +1137,6 @@ static Aml *build_q35_dram_controller(const AcpiMcfgInfo
*mcfg)
return dev;
}
-static void build_x86_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr)
-{
- Aml *scope;
- Aml *field;
- Aml *method;
-
- scope = aml_scope("_SB.PCI0");
-
- aml_append(scope,
- aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr),
0x08));
- field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
- aml_append(field, aml_named_field("PCIU", 32));
- aml_append(field, aml_named_field("PCID", 32));
- aml_append(scope, field);
-
- aml_append(scope,
- aml_operation_region("SEJ", AML_SYSTEM_IO,
- aml_int(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 0x04));
- field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
- aml_append(field, aml_named_field("B0EJ", 32));
- aml_append(scope, field);
-
- aml_append(scope,
- aml_operation_region("BNMR", AML_SYSTEM_IO,
- aml_int(pcihp_addr + ACPI_PCIHP_BNMR_BASE),
0x08));
- field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
- aml_append(field, aml_named_field("BNUM", 32));
- aml_append(field, aml_named_field("PIDX", 32));
- aml_append(scope, field);
-
- aml_append(scope, aml_mutex("BLCK", 0));
-
- method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
- aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
- aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
- aml_append(method,
- aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
- aml_append(method, aml_release(aml_name("BLCK")));
- aml_append(method, aml_return(aml_int(0)));
- aml_append(scope, method);
-
- method = aml_method("AIDX", 2, AML_NOTSERIALIZED);
- aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
- aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
- aml_append(method,
- aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("PIDX")));
- aml_append(method, aml_store(aml_name("PIDX"), aml_local(0)));
- aml_append(method, aml_release(aml_name("BLCK")));
- aml_append(method, aml_return(aml_local(0)));
- aml_append(scope, method);
-
- aml_append(scope, aml_pci_pdsm());
-
- aml_append(table, scope);
-}
-
static Aml *build_q35_osc_method(bool enable_native_pcie_hotplug)
{
Aml *if_ctx;
@@ -1394,7 +1248,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
aml_append(dsdt, sb_scope);
if (pm->pcihp_bridge_en || pm->pcihp_root_en) {
- build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
+ build_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
}
build_piix4_pci0_int(dsdt);
} else if (q35) {
@@ -1438,7 +1292,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
aml_append(dsdt, sb_scope);
if (pm->pcihp_bridge_en) {
- build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
+ build_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
}
build_q35_pci0_int(dsdt);
}
--
2.49.0
