LXR qemu/hw/ppc/pnv

   1/*
   2 * QEMU PowerNV, BMC related functions
   3 *
   4 * Copyright (c) 2016-2017, IBM Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License, version 2, as
   8 * published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19#include "qemu/osdep.h"
  20#include "target/ppc/cpu.h"
  21#include "qemu/log.h"
  22#include "hw/ipmi/ipmi.h"
  23#include "hw/ppc/fdt.h"
  24
  25#include "hw/ppc/pnv.h"
  26
  27#include <libfdt.h>
  28
  29/* TODO: include definition in ipmi.h */
  30#define IPMI_SDR_FULL_TYPE 1
  31
  32/*
  33 * OEM SEL Event data packet sent by BMC in response of a Read Event
  34 * Message Buffer command
  35 */
  36typedef struct OemSel {
  37    /* SEL header */
  38    uint8_t id[2];
  39    uint8_t type;
  40    uint8_t timestamp[4];
  41    uint8_t manuf_id[3];
  42
  43    /* OEM SEL data (6 bytes) follows */
  44    uint8_t netfun;
  45    uint8_t cmd;
  46    uint8_t data[4];
  47} OemSel;
  48
  49#define SOFT_OFF        0x00
  50#define SOFT_REBOOT     0x01
  51
  52static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot)
  53{
  54    /* IPMI SEL Event are 16 bytes long */
  55    OemSel sel = {
  56        .id        = { 0x55 , 0x55 },
  57        .type      = 0xC0, /* OEM */
  58        .manuf_id  = { 0x0, 0x0, 0x0 },
  59        .timestamp = { 0x0, 0x0, 0x0, 0x0 },
  60        .netfun    = 0x3A, /* IBM */
  61        .cmd       = 0x04, /* AMI OEM SEL Power Notification */
  62        .data      = { reboot, 0xFF, 0xFF, 0xFF },
  63    };
  64
  65    ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */);
  66}
  67
  68void pnv_bmc_powerdown(IPMIBmc *bmc)
  69{
  70    pnv_gen_oem_sel(bmc, SOFT_OFF);
  71}
  72
  73void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt)
  74{
  75    int offset;
  76    int i;
  77    const struct ipmi_sdr_compact *sdr;
  78    uint16_t nextrec;
  79
  80    offset = fdt_add_subnode(fdt, 0, "bmc");
  81    _FDT(offset);
  82
  83    _FDT((fdt_setprop_string(fdt, offset, "name", "bmc")));
  84    offset = fdt_add_subnode(fdt, offset, "sensors");
  85    _FDT(offset);
  86
  87    _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
  88    _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
  89
  90    for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) {
  91        int off;
  92        char *name;
  93
  94        if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE &&
  95            sdr->header.rec_type != IPMI_SDR_FULL_TYPE) {
  96            continue;
  97        }
  98
  99        name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number);
 100        off = fdt_add_subnode(fdt, offset, name);
 101        _FDT(off);
 102        g_free(name);
 103
 104        _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number)));
 105        _FDT((fdt_setprop_string(fdt, off, "name", "sensor")));
 106        _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor")));
 107        _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type",
 108                               sdr->reading_type)));
 109        _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id",
 110                               sdr->entity_id)));
 111        _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance",
 112                               sdr->entity_instance)));
 113        _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type",
 114                               sdr->sensor_type)));
 115    }
 116}
 117