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 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
85 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
86
87 offset = fdt_add_subnode(fdt, offset, "sensors");
88 _FDT(offset);
89
90 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
91 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
92
93 for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) {
94 int off;
95 char *name;
96
97 if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE &&
98 sdr->header.rec_type != IPMI_SDR_FULL_TYPE) {
99 continue;
100 }
101
102 name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number);
103 off = fdt_add_subnode(fdt, offset, name);
104 _FDT(off);
105 g_free(name);
106
107 _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number)));
108 _FDT((fdt_setprop_string(fdt, off, "name", "sensor")));
109 _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor")));
110 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type",
111 sdr->reading_type)));
112 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id",
113 sdr->entity_id)));
114 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance",
115 sdr->entity_instance)));
116 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type",
117 sdr->sensor_type)));
118 }
119}
120