Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc,virtio,pci: fixes, features

Fixes all over the place.
ACPI index support.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Mon 22 Mar 2021 22:58:45 GMT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  acpi: Move setters/getters of oem fields to X86MachineState
  acpi: Set proper maximum size for "etc/acpi/rsdp" blob
  acpi: Move maximum size logic into acpi_add_rom_blob()
  microvm: Don't open-code "etc/table-loader"
  acpi: Set proper maximum size for "etc/table-loader" blob
  tests: acpi: update expected blobs
  pci: acpi: add _DSM method to PCI devices
  acpi: add aml_to_decimalstring() and aml_call6() helpers
  pci: acpi: ensure that acpi-index is unique
  pci: introduce acpi-index property for PCI device
  tests: acpi: temporary whitelist DSDT changes
  virtio-pmem: fix virtio_pmem_resp assign problem
  vhost-user: Monitor slave channel in vhost_user_read()
  vhost-user: Introduce nested event loop in vhost_user_read()
  vhost-user: Convert slave channel to QIOChannelSocket
  vhost-user: Factor out duplicated slave_fd teardown code
  vhost-user: Fix double-close on slave_read() error path
  vhost-user: Drop misleading EAGAIN checks in slave_read()
  virtio: Fix virtio_mmio_read()/virtio_mmio_write()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 141 insertions, 32 deletions

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 442b4629a9..de98750aef 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -397,6 +397,13 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
                     aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
                 );
                 aml_append(dev, method);
+                method = aml_method("_DSM", 4, AML_SERIALIZED);
+                aml_append(method,
+                    aml_return(aml_call6("PDSM", aml_arg(0), aml_arg(1),
+                                         aml_arg(2), aml_arg(3),
+                                         aml_name("BSEL"), aml_name("_SUN")))
+                );
+                aml_append(dev, method);
                 aml_append(parent_scope, dev);
 
                 build_append_pcihp_notify_entry(notify_method, slot);
@@ -424,6 +431,16 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
         dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
         aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
 
+        if (bsel) {
+            aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
+            method = aml_method("_DSM", 4, AML_SERIALIZED);
+            aml_append(method, aml_return(
+                aml_call6("PDSM", aml_arg(0), aml_arg(1), aml_arg(2),
+                          aml_arg(3), aml_name("BSEL"), aml_name("_SUN"))
+            ));
+            aml_append(dev, method);
+        }
+
         if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
             /* add VGA specific AML methods */
             int s3d;
@@ -446,9 +463,7 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
             aml_append(method, aml_return(aml_int(s3d)));
             aml_append(dev, method);
         } else if (hotplug_enabled_dev) {
-            /* add _SUN/_EJ0 to make slot hotpluggable  */
-            aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
-
+            /* add _EJ0 to make slot hotpluggable  */
             method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
             aml_append(method,
                 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
@@ -511,6 +526,88 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
     qobject_unref(bsel);
 }
 
+Aml *aml_pci_device_dsm(void)
+{
+    Aml *method, *UUID, *ifctx, *ifctx1, *ifctx2, *ifctx3, *elsectx;
+    Aml *acpi_index = aml_local(0);
+    Aml *zero = aml_int(0);
+    Aml *bnum = aml_arg(4);
+    Aml *func = aml_arg(2);
+    Aml *rev = aml_arg(1);
+    Aml *sun = aml_arg(5);
+
+    method = aml_method("PDSM", 6, AML_SERIALIZED);
+
+    /*
+     * PCI Firmware Specification 3.1
+     * 4.6.  _DSM Definitions for PCI
+     */
+    UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
+    ifctx = aml_if(aml_equal(aml_arg(0), UUID));
+    {
+        aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sun), acpi_index));
+        ifctx1 = aml_if(aml_equal(func, zero));
+        {
+            uint8_t byte_list[1];
+
+            ifctx2 = aml_if(aml_equal(rev, aml_int(2)));
+            {
+                /*
+                 * 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
+                 */
+                ifctx3 = aml_if(aml_lnot(
+                    aml_or(aml_equal(acpi_index, zero),
+                           aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL)
+                ));
+                {
+                    byte_list[0] =
+                        1 /* have supported functions */ |
+                        1 << 7 /* support for function 7 */
+                    ;
+                    aml_append(ifctx3, aml_return(aml_buffer(1, byte_list)));
+                }
+                aml_append(ifctx2, ifctx3);
+             }
+             aml_append(ifctx1, ifctx2);
+
+             byte_list[0] = 0; /* nothing supported */
+             aml_append(ifctx1, aml_return(aml_buffer(1, byte_list)));
+         }
+         aml_append(ifctx, ifctx1);
+         elsectx = aml_else();
+         /*
+          * PCI Firmware Specification 3.1
+          * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under
+          *        Operating Systems
+          */
+         ifctx1 = aml_if(aml_equal(func, aml_int(7)));
+         {
+             Aml *pkg = aml_package(2);
+             Aml *ret = aml_local(1);
+
+             aml_append(pkg, zero);
+             /*
+              * optional, if not impl. should return null string
+              */
+             aml_append(pkg, aml_string("%s", ""));
+             aml_append(ifctx1, aml_store(pkg, ret));
+             /*
+              * update acpi-index to actual value
+              */
+             aml_append(ifctx1, aml_store(acpi_index, aml_index(ret, zero)));
+             aml_append(ifctx1, aml_return(ret));
+         }
+         aml_append(elsectx, ifctx1);
+         aml_append(ifctx, elsectx);
+    }
+    aml_append(method, ifctx);
+    return method;
+}
+
 /**
  * build_prt_entry:
  * @link_name: link name for PCI route entry
@@ -1168,9 +1265,10 @@ static void build_piix4_pci_hotplug(Aml *table)
     aml_append(scope, field);
 
     aml_append(scope,
-        aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04));
+        aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 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));
@@ -1184,6 +1282,18 @@ static void build_piix4_pci_hotplug(Aml *table)
     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_device_dsm());
+
     aml_append(table, scope);
 }
 
@@ -1697,7 +1807,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
     g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
     build_header(linker, table_data,
         (void *)(table_data->data + table_data->len - dsdt->buf->len),
-                 "DSDT", dsdt->buf->len, 1, pcms->oem_id, pcms->oem_table_id);
+                 "DSDT", dsdt->buf->len, 1, x86ms->oem_id, x86ms->oem_table_id);
     free_aml_allocator();
 }
 
@@ -1874,8 +1984,8 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
     build_header(linker, table_data,
                  (void *)(table_data->data + srat_start),
                  "SRAT",
-                 table_data->len - srat_start, 1, pcms->oem_id,
-                 pcms->oem_table_id);
+                 table_data->len - srat_start, 1, x86ms->oem_id,
+                 x86ms->oem_table_id);
 }
 
 /*
@@ -2228,13 +2338,13 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
     if (slic_oem.id) {
         oem_id = slic_oem.id;
     } else {
-        oem_id = pcms->oem_id;
+        oem_id = x86ms->oem_id;
     }
 
     if (slic_oem.table_id) {
         oem_table_id = slic_oem.table_id;
     } else {
-        oem_table_id = pcms->oem_table_id;
+        oem_table_id = x86ms->oem_table_id;
     }
 
     table_offsets = g_array_new(false, true /* clear */,
@@ -2275,30 +2385,30 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
 
     acpi_add_table(table_offsets, tables_blob);
     acpi_build_madt(tables_blob, tables->linker, x86ms,
-                    ACPI_DEVICE_IF(x86ms->acpi_dev), pcms->oem_id,
-                    pcms->oem_table_id);
+                    ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id,
+                    x86ms->oem_table_id);
 
     vmgenid_dev = find_vmgenid_dev();
     if (vmgenid_dev) {
         acpi_add_table(table_offsets, tables_blob);
         vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob,
-                           tables->vmgenid, tables->linker, pcms->oem_id);
+                           tables->vmgenid, tables->linker, x86ms->oem_id);
     }
 
     if (misc.has_hpet) {
         acpi_add_table(table_offsets, tables_blob);
-        build_hpet(tables_blob, tables->linker, pcms->oem_id,
-                   pcms->oem_table_id);
+        build_hpet(tables_blob, tables->linker, x86ms->oem_id,
+                   x86ms->oem_table_id);
     }
     if (misc.tpm_version != TPM_VERSION_UNSPEC) {
         if (misc.tpm_version == TPM_VERSION_1_2) {
             acpi_add_table(table_offsets, tables_blob);
             build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog,
-                           pcms->oem_id, pcms->oem_table_id);
+                           x86ms->oem_id, x86ms->oem_table_id);
         } else { /* TPM_VERSION_2_0 */
             acpi_add_table(table_offsets, tables_blob);
             build_tpm2(tables_blob, tables->linker, tables->tcpalog,
-                       pcms->oem_id, pcms->oem_table_id);
+                       x86ms->oem_id, x86ms->oem_table_id);
         }
     }
     if (pcms->numa_nodes) {
@@ -2306,40 +2416,40 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
         build_srat(tables_blob, tables->linker, machine);
         if (machine->numa_state->have_numa_distance) {
             acpi_add_table(table_offsets, tables_blob);
-            build_slit(tables_blob, tables->linker, machine, pcms->oem_id,
-                       pcms->oem_table_id);
+            build_slit(tables_blob, tables->linker, machine, x86ms->oem_id,
+                       x86ms->oem_table_id);
         }
         if (machine->numa_state->hmat_enabled) {
             acpi_add_table(table_offsets, tables_blob);
             build_hmat(tables_blob, tables->linker, machine->numa_state,
-                       pcms->oem_id, pcms->oem_table_id);
+                       x86ms->oem_id, x86ms->oem_table_id);
         }
     }
     if (acpi_get_mcfg(&mcfg)) {
         acpi_add_table(table_offsets, tables_blob);
-        build_mcfg(tables_blob, tables->linker, &mcfg, pcms->oem_id,
-                   pcms->oem_table_id);
+        build_mcfg(tables_blob, tables->linker, &mcfg, x86ms->oem_id,
+                   x86ms->oem_table_id);
     }
     if (x86_iommu_get_default()) {
         IommuType IOMMUType = x86_iommu_get_type();
         if (IOMMUType == TYPE_AMD) {
             acpi_add_table(table_offsets, tables_blob);
-            build_amd_iommu(tables_blob, tables->linker, pcms->oem_id,
-                            pcms->oem_table_id);
+            build_amd_iommu(tables_blob, tables->linker, x86ms->oem_id,
+                            x86ms->oem_table_id);
         } else if (IOMMUType == TYPE_INTEL) {
             acpi_add_table(table_offsets, tables_blob);
-            build_dmar_q35(tables_blob, tables->linker, pcms->oem_id,
-                           pcms->oem_table_id);
+            build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id,
+                           x86ms->oem_table_id);
         }
     }
     if (machine->nvdimms_state->is_enabled) {
         nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
                           machine->nvdimms_state, machine->ram_slots,
-                          pcms->oem_id, pcms->oem_table_id);
+                          x86ms->oem_id, x86ms->oem_table_id);
     }
 
     acpi_add_table(table_offsets, tables_blob);
-    build_waet(tables_blob, tables->linker, pcms->oem_id, pcms->oem_table_id);
+    build_waet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id);
 
     /* Add tables supplied by user (if any) */
     for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
@@ -2358,7 +2468,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
     {
         AcpiRsdpData rsdp_data = {
             .revision = 0,
-            .oem_id = pcms->oem_id,
+            .oem_id = x86ms->oem_id,
             .xsdt_tbl_offset = NULL,
             .rsdt_tbl_offset = &rsdt,
         };
@@ -2518,13 +2628,12 @@ void acpi_setup(void)
     /* Now expose it all to Guest */
     build_state->table_mr = acpi_add_rom_blob(acpi_build_update,
                                               build_state, tables.table_data,
-                                              ACPI_BUILD_TABLE_FILE,
-                                              ACPI_BUILD_TABLE_MAX_SIZE);
+                                              ACPI_BUILD_TABLE_FILE);
     assert(build_state->table_mr != NULL);
 
     build_state->linker_mr =
         acpi_add_rom_blob(acpi_build_update, build_state,
-                          tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE, 0);
+                          tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE);
 
     fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
                     tables.tcpalog->data, acpi_data_len(tables.tcpalog));
@@ -2563,7 +2672,7 @@ void acpi_setup(void)
         build_state->rsdp = NULL;
         build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update,
                                                  build_state, tables.rsdp,
-                                                 ACPI_BUILD_RSDP_FILE, 0);
+                                                 ACPI_BUILD_RSDP_FILE);
     }
 
     qemu_register_reset(acpi_build_reset, build_state);