[Qemu-devel] [PATCH v5 1/6] ipmi: rework the fwinfo to be fetched from the interface

[minyard@acm.org]

From: Corey Minyard <cminyard@mvista.com>

Instead of scanning IPMI devices from a fwinfo list, allow
the fwinfo to be fetched from the IPMI interface class.
Then the code looking for IPMI fwinfo can scan devices on a
bus and look for ones that implement the IPMI class.

This will let the ACPI scope be defined by the calling
code so the IPMI code doesn't have to know the scope.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
---
 hw/ipmi/ipmi.c         | 34 +++++------------------
 hw/ipmi/isa_ipmi_bt.c  | 57 +++++++++++++++++++++-----------------
 hw/ipmi/isa_ipmi_kcs.c | 56 +++++++++++++++++++++-----------------
 include/hw/ipmi/ipmi.h | 74 ++++++++++++++++++++++++++------------------------
 4 files changed, 109 insertions(+), 112 deletions(-)

diff --git a/hw/ipmi/ipmi.c b/hw/ipmi/ipmi.c
index 6adec1e..f09f217 100644
--- a/hw/ipmi/ipmi.c
+++ b/hw/ipmi/ipmi.c
@@ -30,6 +30,13 @@
 #include "qom/object_interfaces.h"
 #include "qapi/visitor.h"
 
+static uint32_t ipmi_current_uuid = 1;
+
+uint32_t ipmi_next_uuid(void)
+{
+    return ipmi_current_uuid++;
+}
+
 static int ipmi_do_hw_op(IPMIInterface *s, enum ipmi_op op, int checkonly)
 {
     switch (op) {
@@ -122,30 +129,3 @@ static void ipmi_register_types(void)
 }
 
 type_init(ipmi_register_types)
-
-static IPMIFwInfo *ipmi_fw_info;
-static unsigned int ipmi_fw_info_len;
-
-static uint32_t current_uuid = 1;
-
-void ipmi_add_fwinfo(IPMIFwInfo *info, Error **errp)
-{
-    info->uuid = current_uuid++;
-    ipmi_fw_info = g_realloc(ipmi_fw_info,
-                             sizeof(*ipmi_fw_info) * (ipmi_fw_info_len + 1));
-    ipmi_fw_info[ipmi_fw_info_len] = *info;
-}
-
-IPMIFwInfo *ipmi_first_fwinfo(void)
-{
-    return ipmi_fw_info;
-}
-
-IPMIFwInfo *ipmi_next_fwinfo(IPMIFwInfo *current)
-{
-    current++;
-    if (current >= &ipmi_fw_info[ipmi_fw_info_len]) {
-        return NULL;
-    }
-    return current;
-}
diff --git a/hw/ipmi/isa_ipmi_bt.c b/hw/ipmi/isa_ipmi_bt.c
index aaea12e..f036617 100644
--- a/hw/ipmi/isa_ipmi_bt.c
+++ b/hw/ipmi/isa_ipmi_bt.c
@@ -390,16 +390,6 @@ static void ipmi_bt_init(IPMIInterface *ii, Error **errp)
     memory_region_init_io(&ib->io, NULL, &ipmi_bt_io_ops, ii, "ipmi-bt", 3);
 }
 
-static void ipmi_bt_class_init(IPMIInterfaceClass *iic)
-{
-    iic->init = ipmi_bt_init;
-    iic->set_atn = ipmi_bt_set_atn;
-    iic->handle_rsp = ipmi_bt_handle_rsp;
-    iic->handle_if_event = ipmi_bt_handle_event;
-    iic->set_irq_enable = ipmi_bt_set_irq_enable;
-    iic->reset = ipmi_bt_handle_reset;
-}
-
 
 #define TYPE_ISA_IPMI_BT "isa-ipmi-bt"
 #define ISA_IPMI_BT(obj) OBJECT_CHECK(ISAIPMIBTDevice, (obj), \
@@ -409,9 +399,38 @@ typedef struct ISAIPMIBTDevice {
     ISADevice dev;
     int32_t isairq;
     IPMIBT bt;
-    IPMIFwInfo fwinfo;
+    uint32_t uuid;
 } ISAIPMIBTDevice;
 
+static void ipmi_bt_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info)
+{
+    ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
+
+    info->interface_name = "bt";
+    info->interface_type = IPMI_SMBIOS_BT;
+    info->ipmi_spec_major_revision = 2;
+    info->ipmi_spec_minor_revision = 0;
+    info->base_address = iib->bt.io_base;
+    info->register_length = iib->bt.io_length;
+    info->register_spacing = 1;
+    info->memspace = IPMI_MEMSPACE_IO;
+    info->irq_type = IPMI_LEVEL_IRQ;
+    info->interrupt_number = iib->isairq;
+    info->i2c_slave_address = iib->bt.bmc->slave_addr;
+    info->uuid = iib->uuid;
+}
+
+static void ipmi_bt_class_init(IPMIInterfaceClass *iic)
+{
+    iic->init = ipmi_bt_init;
+    iic->set_atn = ipmi_bt_set_atn;
+    iic->handle_rsp = ipmi_bt_handle_rsp;
+    iic->handle_if_event = ipmi_bt_handle_event;
+    iic->set_irq_enable = ipmi_bt_set_irq_enable;
+    iic->reset = ipmi_bt_handle_reset;
+    iic->get_fwinfo = ipmi_bt_get_fwinfo;
+}
+
 static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
 {
     ISADevice *isadev = ISA_DEVICE(dev);
@@ -424,6 +443,8 @@ static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
         return;
     }
 
+    iib->uuid = ipmi_next_uuid();
+
     iib->bt.bmc->intf = ii;
 
     iic->init(ii, errp);
@@ -438,20 +459,6 @@ static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
     qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length);
 
     isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base);
-
-    iib->fwinfo.interface_name = "bt";
-    iib->fwinfo.interface_type = IPMI_SMBIOS_BT;
-    iib->fwinfo.ipmi_spec_major_revision = 2;
-    iib->fwinfo.ipmi_spec_minor_revision = 0;
-    iib->fwinfo.base_address = iib->bt.io_base;
-    iib->fwinfo.register_length = iib->bt.io_length;
-    iib->fwinfo.register_spacing = 1;
-    iib->fwinfo.memspace = IPMI_MEMSPACE_IO;
-    iib->fwinfo.irq_type = IPMI_LEVEL_IRQ;
-    iib->fwinfo.interrupt_number = iib->isairq;
-    iib->fwinfo.acpi_parent = "\\_SB.PCI0.ISA";
-    iib->fwinfo.i2c_slave_address = iib->bt.bmc->slave_addr;
-    ipmi_add_fwinfo(&iib->fwinfo, errp);
 }
 
 static const VMStateDescription vmstate_ISAIPMIBTDevice = {
diff --git a/hw/ipmi/isa_ipmi_kcs.c b/hw/ipmi/isa_ipmi_kcs.c
index 2742ce0..9a38f8a 100644
--- a/hw/ipmi/isa_ipmi_kcs.c
+++ b/hw/ipmi/isa_ipmi_kcs.c
@@ -354,16 +354,6 @@ static void ipmi_kcs_init(IPMIInterface *ii, Error **errp)
     memory_region_init_io(&ik->io, NULL, &ipmi_kcs_io_ops, ii, "ipmi-kcs", 2);
 }
 
-static void ipmi_kcs_class_init(IPMIInterfaceClass *iic)
-{
-    iic->init = ipmi_kcs_init;
-    iic->set_atn = ipmi_kcs_set_atn;
-    iic->handle_rsp = ipmi_kcs_handle_rsp;
-    iic->handle_if_event = ipmi_kcs_handle_event;
-    iic->set_irq_enable = ipmi_kcs_set_irq_enable;
-}
-
-
 #define TYPE_ISA_IPMI_KCS "isa-ipmi-kcs"
 #define ISA_IPMI_KCS(obj) OBJECT_CHECK(ISAIPMIKCSDevice, (obj), \
                                        TYPE_ISA_IPMI_KCS)
@@ -372,9 +362,37 @@ typedef struct ISAIPMIKCSDevice {
     ISADevice dev;
     int32_t isairq;
     IPMIKCS kcs;
-    IPMIFwInfo fwinfo;
+    uint32_t uuid;
 } ISAIPMIKCSDevice;
 
+static void ipmi_kcs_get_fwinfo(IPMIInterface *ii, IPMIFwInfo *info)
+{
+    ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii);
+
+    info->interface_name = "kcs";
+    info->interface_type = IPMI_SMBIOS_KCS;
+    info->ipmi_spec_major_revision = 2;
+    info->ipmi_spec_minor_revision = 0;
+    info->base_address = iik->kcs.io_base;
+    info->i2c_slave_address = iik->kcs.bmc->slave_addr;
+    info->register_length = iik->kcs.io_length;
+    info->register_spacing = 1;
+    info->memspace = IPMI_MEMSPACE_IO;
+    info->irq_type = IPMI_LEVEL_IRQ;
+    info->interrupt_number = iik->isairq;
+    info->uuid = iik->uuid;
+}
+
+static void ipmi_kcs_class_init(IPMIInterfaceClass *iic)
+{
+    iic->init = ipmi_kcs_init;
+    iic->set_atn = ipmi_kcs_set_atn;
+    iic->handle_rsp = ipmi_kcs_handle_rsp;
+    iic->handle_if_event = ipmi_kcs_handle_event;
+    iic->set_irq_enable = ipmi_kcs_set_irq_enable;
+    iic->get_fwinfo = ipmi_kcs_get_fwinfo;
+}
+
 static void ipmi_isa_realize(DeviceState *dev, Error **errp)
 {
     ISADevice *isadev = ISA_DEVICE(dev);
@@ -387,6 +405,8 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp)
         return;
     }
 
+    iik->uuid = ipmi_next_uuid();
+
     iik->kcs.bmc->intf = ii;
 
     iic->init(ii, errp);
@@ -401,20 +421,6 @@ static void ipmi_isa_realize(DeviceState *dev, Error **errp)
     qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length);
 
     isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base);
-
-    iik->fwinfo.interface_name = "kcs";
-    iik->fwinfo.interface_type = IPMI_SMBIOS_KCS;
-    iik->fwinfo.ipmi_spec_major_revision = 2;
-    iik->fwinfo.ipmi_spec_minor_revision = 0;
-    iik->fwinfo.base_address = iik->kcs.io_base;
-    iik->fwinfo.i2c_slave_address = iik->kcs.bmc->slave_addr;
-    iik->fwinfo.register_length = iik->kcs.io_length;
-    iik->fwinfo.register_spacing = 1;
-    iik->fwinfo.memspace = IPMI_MEMSPACE_IO;
-    iik->fwinfo.irq_type = IPMI_LEVEL_IRQ;
-    iik->fwinfo.interrupt_number = iik->isairq;
-    iik->fwinfo.acpi_parent = "\\_SB.PCI0.ISA";
-    ipmi_add_fwinfo(&iik->fwinfo, errp);
 }
 
 const VMStateDescription vmstate_ISAIPMIKCSDevice = {
diff --git a/include/hw/ipmi/ipmi.h b/include/hw/ipmi/ipmi.h
index 74a2b5a..91b83b5 100644
--- a/include/hw/ipmi/ipmi.h
+++ b/include/hw/ipmi/ipmi.h
@@ -65,6 +65,40 @@ enum ipmi_op {
 #define IPMI_SMBIOS_BT          0x03
 #define IPMI_SMBIOS_SSIF        0x04
 
+/*
+ * Used for transferring information to interfaces that add
+ * entries to firmware tables.
+ */
+typedef struct IPMIFwInfo {
+    const char *interface_name;
+    int interface_type;
+    uint8_t ipmi_spec_major_revision;
+    uint8_t ipmi_spec_minor_revision;
+    uint8_t i2c_slave_address;
+    uint32_t uuid;
+
+    uint64_t base_address;
+    uint64_t register_length;
+    uint8_t register_spacing;
+    enum {
+        IPMI_MEMSPACE_IO,
+        IPMI_MEMSPACE_MEM32,
+        IPMI_MEMSPACE_MEM64,
+        IPMI_MEMSPACE_SMBUS
+    } memspace;
+
+    int interrupt_number;
+    enum {
+        IPMI_LEVEL_IRQ,
+        IPMI_EDGE_IRQ
+    } irq_type;
+} IPMIFwInfo;
+
+/*
+ * Called by each instantiated IPMI interface device to get it's uuid.
+ */
+uint32_t ipmi_next_uuid(void);
+
 /* IPMI Interface types (KCS, SMIC, BT) are prefixed with this */
 #define TYPE_IPMI_INTERFACE_PREFIX "ipmi-interface-"
 
@@ -127,6 +161,11 @@ typedef struct IPMIInterfaceClass {
      * Set by the owner to hold the backend data for the interface.
      */
     void *(*get_backend_data)(struct IPMIInterface *s);
+
+    /*
+     * Return the firmware info for a device.
+     */
+    void (*get_fwinfo)(struct IPMIInterface *s, IPMIFwInfo *info);
 } IPMIInterfaceClass;
 
 /*
@@ -168,41 +207,6 @@ typedef struct IPMIBmcClass {
  */
 void ipmi_bmc_find_and_link(Object *obj, Object **bmc);
 
-/*
- * Used for transferring information to interfaces that add
- * entries to firmware tables.
- */
-typedef struct IPMIFwInfo {
-    const char *interface_name;
-    int interface_type;
-    uint8_t ipmi_spec_major_revision;
-    uint8_t ipmi_spec_minor_revision;
-    uint8_t i2c_slave_address;
-    uint32_t uuid;
-
-    uint64_t base_address;
-    uint64_t register_length;
-    uint8_t register_spacing;
-    enum {
-        IPMI_MEMSPACE_IO,
-        IPMI_MEMSPACE_MEM32,
-        IPMI_MEMSPACE_MEM64,
-        IPMI_MEMSPACE_SMBUS
-    } memspace;
-
-    int interrupt_number;
-    enum {
-        IPMI_LEVEL_IRQ,
-        IPMI_EDGE_IRQ
-    } irq_type;
-
-    const char *acpi_parent;
-} IPMIFwInfo;
-
-void ipmi_add_fwinfo(IPMIFwInfo *info, Error **errp);
-IPMIFwInfo *ipmi_first_fwinfo(void);
-IPMIFwInfo *ipmi_next_fwinfo(IPMIFwInfo *current);
-
 #ifdef IPMI_DEBUG
 #define ipmi_debug(fs, ...) \
     fprintf(stderr, "IPMI (%s): " fs, __func__, ##__VA_ARGS__)
-- 
2.7.4