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 "hw/hw.h" 21 #include "sysemu/sysemu.h" 22 #include "target/ppc/cpu.h" 23 #include "qapi/error.h" 24 #include "qemu/log.h" 25 #include "hw/ipmi/ipmi.h" 26 #include "hw/ppc/fdt.h" 27 28 #include "hw/ppc/pnv.h" 29 30 #include <libfdt.h> 31 32 /* TODO: include definition in ipmi.h */ 33 #define IPMI_SDR_FULL_TYPE 1 34 35 /* 36 * OEM SEL Event data packet sent by BMC in response of a Read Event 37 * Message Buffer command 38 */ 39 typedef struct OemSel { 40 /* SEL header */ 41 uint8_t id[2]; 42 uint8_t type; 43 uint8_t timestamp[4]; 44 uint8_t manuf_id[3]; 45 46 /* OEM SEL data (6 bytes) follows */ 47 uint8_t netfun; 48 uint8_t cmd; 49 uint8_t data[4]; 50 } OemSel; 51 52 #define SOFT_OFF 0x00 53 #define SOFT_REBOOT 0x01 54 55 static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot) 56 { 57 /* IPMI SEL Event are 16 bytes long */ 58 OemSel sel = { 59 .id = { 0x55 , 0x55 }, 60 .type = 0xC0, /* OEM */ 61 .manuf_id = { 0x0, 0x0, 0x0 }, 62 .timestamp = { 0x0, 0x0, 0x0, 0x0 }, 63 .netfun = 0x3A, /* IBM */ 64 .cmd = 0x04, /* AMI OEM SEL Power Notification */ 65 .data = { reboot, 0xFF, 0xFF, 0xFF }, 66 }; 67 68 ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */); 69 } 70 71 void pnv_bmc_powerdown(IPMIBmc *bmc) 72 { 73 pnv_gen_oem_sel(bmc, SOFT_OFF); 74 } 75 76 void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt) 77 { 78 int offset; 79 int i; 80 const struct ipmi_sdr_compact *sdr; 81 uint16_t nextrec; 82 83 offset = fdt_add_subnode(fdt, 0, "/bmc"); 84 _FDT(offset); 85 86 _FDT((fdt_setprop_string(fdt, offset, "name", "bmc"))); 87 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 88 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 89 90 offset = fdt_add_subnode(fdt, offset, "sensors"); 91 _FDT(offset); 92 93 _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1))); 94 _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0))); 95 96 for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) { 97 int off; 98 char *name; 99 100 if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE && 101 sdr->header.rec_type != IPMI_SDR_FULL_TYPE) { 102 continue; 103 } 104 105 name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number); 106 off = fdt_add_subnode(fdt, offset, name); 107 _FDT(off); 108 g_free(name); 109 110 _FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number))); 111 _FDT((fdt_setprop_string(fdt, off, "name", "sensor"))); 112 _FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor"))); 113 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type", 114 sdr->reading_type))); 115 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id", 116 sdr->entity_id))); 117 _FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance", 118 sdr->entity_instance))); 119 _FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type", 120 sdr->sensor_type))); 121 } 122 } 123