ipmi: Add SMBIOS table entry

Add an IPMI table entry to the SMBIOS.

Signed-off-by: Corey Minyard <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

hw/smbios/Makefile.objs

@@ -1 +1,2 @@
 common-obj-$(CONFIG_SMBIOS) += smbios.o
+common-obj-$(call land,$(CONFIG_SMBIOS),$(CONFIG_IPMI)) += smbios_type_38.o

hw/smbios/smbios.c

@@ -25,6 +25,7 @@
 #include "hw/loader.h"
 #include "exec/cpu-common.h"
 #include "smbios_build.h"
+#include "hw/smbios/ipmi.h"
 
 /* legacy structures and constants for <= 2.0 machines */
 struct smbios_header {
@@ -848,6 +849,7 @@ void smbios_get_tables(const struct smbios_phys_mem_area *mem_array,
         }
 
         smbios_build_type_32_table();
+        smbios_build_type_38_table();
         smbios_build_type_127_table();
 
         smbios_validate_table();

hw/smbios/smbios_type_38.c

@@ -0,0 +1,117 @@
+/*
+ * IPMI SMBIOS firmware handling
+ *
+ * Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/ipmi/ipmi.h"
+#include "hw/smbios/ipmi.h"
+#include "hw/smbios/smbios.h"
+#include "qemu/error-report.h"
+#include "smbios_build.h"
+
+/* SMBIOS type 38 - IPMI */
+struct smbios_type_38 {
+    struct smbios_structure_header header;
+    uint8_t interface_type;
+    uint8_t ipmi_spec_revision;
+    uint8_t i2c_slave_address;
+    uint8_t nv_storage_device_address;
+    uint64_t base_address;
+    uint8_t base_address_modifier;
+    uint8_t interrupt_number;
+} QEMU_PACKED;
+
+static void smbios_build_one_type_38(IPMIFwInfo *info)
+{
+    uint64_t baseaddr = info->base_address;
+    SMBIOS_BUILD_TABLE_PRE(38, 0x3000, true);
+
+    t->interface_type = info->interface_type;
+    t->ipmi_spec_revision = ((info->ipmi_spec_major_revision << 4)
+                             | info->ipmi_spec_minor_revision);
+    t->i2c_slave_address = info->i2c_slave_address;
+    t->nv_storage_device_address = 0;
+
+    assert(info->ipmi_spec_minor_revision <= 15);
+    assert(info->ipmi_spec_major_revision <= 15);
+
+    /* or 1 to set it to I/O space */
+    switch (info->memspace) {
+    case IPMI_MEMSPACE_IO:
+        baseaddr |= 1;
+        break;
+    case IPMI_MEMSPACE_MEM32:
+    case IPMI_MEMSPACE_MEM64:
+        break;
+    case IPMI_MEMSPACE_SMBUS:
+        baseaddr <<= 1;
+        break;
+    }
+
+    t->base_address = cpu_to_le64(baseaddr);
+
+    t->base_address_modifier = 0;
+    if (info->irq_type == IPMI_LEVEL_IRQ) {
+        t->base_address_modifier |= 1;
+    }
+    switch (info->register_spacing) {
+    case 1:
+        break;
+    case 4:
+        t->base_address_modifier |= 1 << 6;
+        break;
+    case 16:
+        t->base_address_modifier |= 2 << 6;
+        break;
+    default:
+        error_report("IPMI register spacing %d is not compatible with"
+                     " SMBIOS, ignoring this entry.", info->register_spacing);
+        return;
+    }
+    t->interrupt_number = info->interrupt_number;
+
+    SMBIOS_BUILD_TABLE_POST;
+}
+
+static void smbios_add_ipmi_devices(BusState *bus)
+{
+    BusChild *kid;
+
+    QTAILQ_FOREACH(kid, &bus->children,  sibling) {
+        DeviceState *dev = kid->child;
+        Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_IPMI_INTERFACE);
+        BusState *childbus;
+
+        if (obj) {
+            IPMIInterface *ii;
+            IPMIInterfaceClass *iic;
+            IPMIFwInfo info;
+
+            ii = IPMI_INTERFACE(obj);
+            iic = IPMI_INTERFACE_GET_CLASS(obj);
+            memset(&info, 0, sizeof(info));
+            iic->get_fwinfo(ii, &info);
+            smbios_build_one_type_38(&info);
+            continue;
+        }
+
+        QLIST_FOREACH(childbus, &dev->child_bus, sibling) {
+            smbios_add_ipmi_devices(childbus);
+        }
+    }
+}
+
+void smbios_build_type_38_table(void)
+{
+    BusState *bus;
+
+    bus = sysbus_get_default();
+    if (bus) {
+        smbios_add_ipmi_devices(bus);
+    }
+}

include/hw/smbios/ipmi.h

@@ -0,0 +1,15 @@
+/*
+ * IPMI SMBIOS firmware handling
+ *
+ * Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef QEMU_SMBIOS_IPMI_H
+#define QEMU_SMBIOS_IPMI_H
+
+void smbios_build_type_38_table(void);
+
+#endif /* QEMU_SMBIOS_IPMI_H */

stubs/Makefile.objs

@@ -41,3 +41,4 @@ stub-obj-y += target-monitor-defs.o
 stub-obj-y += target-get-monitor-def.o
 stub-obj-y += vhost.o
 stub-obj-y += iohandler.o
+stub-obj-y += smbios_type_38.o

stubs/smbios_type_38.c

@@ -0,0 +1,14 @@
+/*
+ * IPMI SMBIOS firmware handling
+ *
+ * Copyright (c) 2015,2016 Corey Minyard, MontaVista Software, LLC
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "hw/smbios/ipmi.h"
+
+void smbios_build_type_38_table(void)
+{
+}