From 5ccdcc1c49246cce9b1536e28a4977c65d72531c Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Wed, 11 May 2016 12:33:47 +0200
Subject: [PATCH 08/10] acpi: add function to extract oem_id and oem_table_id
 from the user's SLIC

RH-Author: Laszlo Ersek <lersek@redhat.com>
Message-id: <1462970028-10959-7-git-send-email-lersek@redhat.com>
Patchwork-id: 70383
O-Subject: [RHEL-7.3 qemu-kvm PATCH v2 6/7] acpi: add function to extract oem_id and oem_table_id from the user's SLIC
Bugzilla: 1330969
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>

The acpi_get_slic_oem() function stores pointers to these fields in the
(first) SLIC table that the user passes in with the -acpitable switch.

Cc: "Michael S. Tsirkin" <mst@redhat.com> (supporter:ACPI/SMBIOS)
Cc: Igor Mammedov <imammedo@redhat.com> (supporter:ACPI/SMBIOS)
Cc: Richard W.M. Jones <rjones@redhat.com>
Cc: Aleksei Kovura <alex3kov@zoho.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: Steven Newbury <steve@snewbury.org.uk>
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1248758
LP: https://bugs.launchpad.net/qemu/+bug/1533848
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Steven Newbury <steve@snewbury.org.uk>
(cherry picked from commit 88594e4fd1e916b778968b2bdd8d7375ca2fe8d8)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
 include/hw/acpi/acpi.h |  7 +++++++
 hw/acpi/core.c         | 16 ++++++++++++++++
 2 files changed, 23 insertions(+)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/acpi/core.c         | 16 ++++++++++++++++
 include/hw/acpi/acpi.h |  7 +++++++
 2 files changed, 23 insertions(+)

diff --git a/hw/acpi/core.c b/hw/acpi/core.c
index 88efba7..99c5918 100644
--- a/hw/acpi/core.c
+++ b/hw/acpi/core.c
@@ -349,6 +349,22 @@ uint8_t *acpi_table_next(uint8_t *current)
     }
 }
 
+int acpi_get_slic_oem(AcpiSlicOem *oem)
+{
+    uint8_t *u;
+
+    for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
+        struct acpi_table_header *hdr = (void *)(u - sizeof(hdr->_length));
+
+        if (memcmp(hdr->sig, "SLIC", 4) == 0) {
+            oem->id = hdr->oem_id;
+            oem->table_id = hdr->oem_table_id;
+            return 0;
+        }
+    }
+    return -1;
+}
+
 static void acpi_notify_wakeup(Notifier *notifier, void *data)
 {
     ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
diff --git a/include/hw/acpi/acpi.h b/include/hw/acpi/acpi.h
index bb7136d..1e59ec9 100644
--- a/include/hw/acpi/acpi.h
+++ b/include/hw/acpi/acpi.h
@@ -171,4 +171,11 @@ unsigned acpi_table_len(void *current);
 void acpi_table_add(const QemuOpts *opts, Error **errp);
 void acpi_table_add_builtin(const QemuOpts *opts, Error **errp);
 
+typedef struct AcpiSlicOem AcpiSlicOem;
+struct AcpiSlicOem {
+  char *id;
+  char *table_id;
+};
+int acpi_get_slic_oem(AcpiSlicOem *oem);
+
 #endif /* !QEMU_HW_ACPI_H */
-- 
1.8.3.1