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Viewing changes to roms/skiboot/hw/fsp/fsp-chiptod.c

  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/skiboot/hw/fsp/fsp-chiptod.c
 
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/* Copyright 2013-2014 IBM Corp.
 
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 *
 
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 * Licensed under the Apache License, Version 2.0 (the "License");
 
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 * you may not use this file except in compliance with the License.
 
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 * You may obtain a copy of the License at
 
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 *
 
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 *      http://www.apache.org/licenses/LICENSE-2.0
 
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 *
 
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 * Unless required by applicable law or agreed to in writing, software
 
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 * distributed under the License is distributed on an "AS IS" BASIS,
 
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 
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 * implied.
 
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 * See the License for the specific language governing permissions and
 
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 * limitations under the License.
 
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 */
 
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#define pr_fmt(fmt)     "CHIPTOD: " fmt
 
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#include <skiboot.h>
 
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#include <chiptod.h>
 
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#include <fsp.h>
 
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/* Response status for fsp command 0xE6, s/c 0x06 (Enable/Disable Topology) */
 
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#define FSP_STATUS_TOPO_IN_USE  0xb8            /* topology is in use */
 
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static bool fsp_chiptod_update_topology(uint32_t cmd_sub_mod,
 
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                                        struct fsp_msg *msg)
 
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{
 
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        struct fsp_msg *resp;
 
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        enum chiptod_topology topo;
 
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        bool action;
 
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        uint8_t status = 0;
 
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        switch (cmd_sub_mod) {
 
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        case FSP_CMD_TOPO_ENABLE_DISABLE:
 
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                /*
 
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                 * Action Values: 0x00 = Disable, 0x01 = Enable
 
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                 * Topology Values: 0x00 = Primary, 0x01 = Secondary
 
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                 */
 
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                action = !!msg->data.bytes[2];
 
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                topo = msg->data.bytes[3];
 
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                prlog(PR_DEBUG, "Topology update event:\n");
 
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                prlog(PR_DEBUG, "  Action = %s, Topology = %s\n",
 
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                                        action ? "Enable" : "Disable",
 
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                                        topo ? "Secondary" : "Primary");
 
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                if (!chiptod_adjust_topology(topo, action))
 
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                        status = FSP_STATUS_TOPO_IN_USE;
 
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                else
 
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                        status = 0x00;
 
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                resp = fsp_mkmsg(FSP_RSP_TOPO_ENABLE_DISABLE | status, 0);
 
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                if (!resp) {
 
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                        prerror("Response allocation failed\n");
 
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                        return false;
 
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                }
 
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                if (fsp_queue_msg(resp, fsp_freemsg)) {
 
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                        fsp_freemsg(resp);
 
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                        prerror("Failed to queue response msg\n");
 
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                }
 
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                return true;
 
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        default:
 
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                prlog(PR_DEBUG, "Unhandled sub cmd: %06x\n", cmd_sub_mod);
 
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                break;
 
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        }
 
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        return false;
 
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}
 
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static struct fsp_client fsp_chiptod_client = {
 
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                .message = fsp_chiptod_update_topology,
 
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};
 
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void fsp_chiptod_init(void)
 
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{
 
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        /* Register for Class E6 (HW maintanance) */
 
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        fsp_register_client(&fsp_chiptod_client, FSP_MCLASS_HW_MAINT);
 
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}