Add minimal support for ipmitool

Adding just a couple of ipmi commands that ipmitool always calls.
I'm doing this because in order to run the ipmitool lan 1 <parms>
instead of just the raw command the get channel info was needed.

Author: Chris Austen

Makefile

@@ -15,7 +15,8 @@ LIB_APP_OBJ = apphandler.o     \
               ipmisensor.o     \
               storageaddsel.o  \
               transporthandler.o  \
-              globalhandler.o  
+              globalhandler.o  \
+              groupext.o
 
 LIB_HOST_SRV_OBJ = host-services.o
 

apphandler.C

@@ -351,6 +351,44 @@ ipmi_ret_t ipmi_app_reset_watchdog(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
     return rc;
 }
 
+// ATTENTION: This ipmi function is very hardcoded on purpose
+// OpenBMC does not fully support IPMI.  This command is useful
+// to have around because it enables testing of interfaces with
+// the IPMI tool.
+#define GET_CHANNEL_INFO_CHANNEL_OFFSET 0
+// IPMI Table 6-2
+#define IPMI_CHANNEL_TYPE_IPMB 1
+// IPMI Table 6-3
+#define IPMI_CHANNEL_MEDIUM_TYPE_OTHER 6
+
+ipmi_ret_t ipmi_app_channel_info(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                             ipmi_request_t request, ipmi_response_t response,
+                             ipmi_data_len_t data_len, ipmi_context_t context)
+{
+    ipmi_ret_t rc = IPMI_CC_OK;
+    uint8_t resp[] = {
+        1,
+        IPMI_CHANNEL_MEDIUM_TYPE_OTHER,
+        IPMI_CHANNEL_TYPE_IPMB,
+        1,0x41,0xA7,0x00,0,0};
+    uint8_t *p = (uint8_t*) request;
+
+    printf("IPMI APP GET CHANNEL INFO\n");
+
+    // I"m only supporting channel 1.  0xE is the 'default channel'
+    if (*p == 0xe || *p == 1) {
+
+        *data_len = sizeof(resp);
+        memcpy(response, resp, *data_len);
+
+    } else {
+        rc = IPMI_CC_PARM_OUT_OF_RANGE;
+        *data_len = 0;
+    }
+
+    return rc;
+}
+
 ipmi_ret_t ipmi_app_set_bmc_global_enables(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
                              ipmi_request_t request, ipmi_response_t response,
                              ipmi_data_len_t data_len, ipmi_context_t context)
@@ -417,6 +455,12 @@ void register_netfn_app_functions()
     printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_MSG_FLAGS);
     ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_MSG_FLAGS, NULL, ipmi_app_get_msg_flags);
 
+
+    printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_APP, IPMI_CMD_GET_CHAN_INFO);
+    ipmi_register_callback(NETFUN_APP, IPMI_CMD_GET_CHAN_INFO, NULL, ipmi_app_channel_info);
+
+
+
     return;
 }
 

apphandler.h

@@ -27,6 +27,8 @@ enum ipmi_netfn_app_cmds
     IPMI_CMD_GET_MSG_FLAGS          = 0x31,
     IPMI_CMD_READ_EVENT             = 0x35,
     IPMI_CMD_GET_CAP_BIT            = 0x36,
+    IPMI_CMD_GET_CHAN_INFO          = 0x42,
+
 };
 
 // A Mechanism to tell host to shtudown hosts by sending this PEM SEL. Really

groupext.C

@@ -0,0 +1,31 @@
+#include "ipmid-api.h"
+#include "ipmid.H"
+#include <stdio.h>
+#include <stdint.h>
+
+#define GRPEXT_GET_GROUP_CMD 0
+void register_netfn_groupext_functions() __attribute__((constructor));
+
+ipmi_ret_t ipmi_groupext(ipmi_netfn_t netfn, ipmi_cmd_t cmd,
+                             ipmi_request_t request, ipmi_response_t response,
+                             ipmi_data_len_t data_len, ipmi_context_t context)
+{
+	// Generic return from IPMI commands.
+    ipmi_ret_t rc = IPMI_CC_OK;
+    uint8_t *p = (uint8_t*) response;
+
+    printf("IPMI GROUP EXTENTIONS\n");
+
+    *data_len = 1;
+    *p = 0;
+
+    return rc;
+}
+
+void register_netfn_groupext_functions()
+{
+    printf("Registering NetFn:[0x%X], Cmd:[0x%X]\n",NETFUN_GRPEXT, GRPEXT_GET_GROUP_CMD);
+    ipmi_register_callback(NETFUN_GRPEXT, GRPEXT_GET_GROUP_CMD, NULL, ipmi_groupext);
+
+    return;
+}

ipmid-api.h

@@ -91,6 +91,7 @@ enum ipmi_return_codes
     IPMI_CC_OK = 0x00,
     IPMI_DCMI_CC_NO_ACTIVE_POWER_LIMIT = 0x80,
     IPMI_CC_INVALID = 0xC1,
+    IPMI_CC_PARM_OUT_OF_RANGE = 0xC9,
     IPMI_CC_SENSOR_INVALID = 0xCB,
     IPMI_CC_RESPONSE_ERROR = 0xCE,
     IPMI_CC_UNSPECIFIED_ERROR = 0xFF,