314 lines
8.7 KiB
C
314 lines
8.7 KiB
C
/*
|
|
* QEMU PowerNV, BMC related functions
|
|
*
|
|
* Copyright (c) 2016-2017, IBM Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "qapi/error.h"
|
|
#include "target/ppc/cpu.h"
|
|
#include "qemu/log.h"
|
|
#include "hw/ipmi/ipmi.h"
|
|
#include "hw/ppc/fdt.h"
|
|
|
|
#include "hw/ppc/pnv.h"
|
|
|
|
#include <libfdt.h>
|
|
|
|
/* TODO: include definition in ipmi.h */
|
|
#define IPMI_SDR_FULL_TYPE 1
|
|
|
|
/*
|
|
* OEM SEL Event data packet sent by BMC in response of a Read Event
|
|
* Message Buffer command
|
|
*/
|
|
typedef struct OemSel {
|
|
/* SEL header */
|
|
uint8_t id[2];
|
|
uint8_t type;
|
|
uint8_t timestamp[4];
|
|
uint8_t manuf_id[3];
|
|
|
|
/* OEM SEL data (6 bytes) follows */
|
|
uint8_t netfun;
|
|
uint8_t cmd;
|
|
uint8_t data[4];
|
|
} OemSel;
|
|
|
|
#define SOFT_OFF 0x00
|
|
#define SOFT_REBOOT 0x01
|
|
|
|
static bool pnv_bmc_is_simulator(IPMIBmc *bmc)
|
|
{
|
|
return object_dynamic_cast(OBJECT(bmc), TYPE_IPMI_BMC_SIMULATOR);
|
|
}
|
|
|
|
static void pnv_gen_oem_sel(IPMIBmc *bmc, uint8_t reboot)
|
|
{
|
|
/* IPMI SEL Event are 16 bytes long */
|
|
OemSel sel = {
|
|
.id = { 0x55 , 0x55 },
|
|
.type = 0xC0, /* OEM */
|
|
.manuf_id = { 0x0, 0x0, 0x0 },
|
|
.timestamp = { 0x0, 0x0, 0x0, 0x0 },
|
|
.netfun = 0x3A, /* IBM */
|
|
.cmd = 0x04, /* AMI OEM SEL Power Notification */
|
|
.data = { reboot, 0xFF, 0xFF, 0xFF },
|
|
};
|
|
|
|
ipmi_bmc_gen_event(bmc, (uint8_t *) &sel, 0 /* do not log the event */);
|
|
}
|
|
|
|
void pnv_bmc_powerdown(IPMIBmc *bmc)
|
|
{
|
|
pnv_gen_oem_sel(bmc, SOFT_OFF);
|
|
}
|
|
|
|
void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt)
|
|
{
|
|
int offset;
|
|
int i;
|
|
const struct ipmi_sdr_compact *sdr;
|
|
uint16_t nextrec;
|
|
|
|
if (!pnv_bmc_is_simulator(bmc)) {
|
|
return;
|
|
}
|
|
|
|
offset = fdt_add_subnode(fdt, 0, "bmc");
|
|
_FDT(offset);
|
|
|
|
_FDT((fdt_setprop_string(fdt, offset, "name", "bmc")));
|
|
offset = fdt_add_subnode(fdt, offset, "sensors");
|
|
_FDT(offset);
|
|
|
|
_FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 0x1)));
|
|
_FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0x0)));
|
|
|
|
for (i = 0; !ipmi_bmc_sdr_find(bmc, i, &sdr, &nextrec); i++) {
|
|
int off;
|
|
char *name;
|
|
|
|
if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE &&
|
|
sdr->header.rec_type != IPMI_SDR_FULL_TYPE) {
|
|
continue;
|
|
}
|
|
|
|
name = g_strdup_printf("sensor@%x", sdr->sensor_owner_number);
|
|
off = fdt_add_subnode(fdt, offset, name);
|
|
_FDT(off);
|
|
g_free(name);
|
|
|
|
_FDT((fdt_setprop_cell(fdt, off, "reg", sdr->sensor_owner_number)));
|
|
_FDT((fdt_setprop_string(fdt, off, "name", "sensor")));
|
|
_FDT((fdt_setprop_string(fdt, off, "compatible", "ibm,ipmi-sensor")));
|
|
_FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-reading-type",
|
|
sdr->reading_type)));
|
|
_FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-id",
|
|
sdr->entity_id)));
|
|
_FDT((fdt_setprop_cell(fdt, off, "ipmi-entity-instance",
|
|
sdr->entity_instance)));
|
|
_FDT((fdt_setprop_cell(fdt, off, "ipmi-sensor-type",
|
|
sdr->sensor_type)));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* HIOMAP protocol handler
|
|
*/
|
|
#define HIOMAP_C_RESET 1
|
|
#define HIOMAP_C_GET_INFO 2
|
|
#define HIOMAP_C_GET_FLASH_INFO 3
|
|
#define HIOMAP_C_CREATE_READ_WINDOW 4
|
|
#define HIOMAP_C_CLOSE_WINDOW 5
|
|
#define HIOMAP_C_CREATE_WRITE_WINDOW 6
|
|
#define HIOMAP_C_MARK_DIRTY 7
|
|
#define HIOMAP_C_FLUSH 8
|
|
#define HIOMAP_C_ACK 9
|
|
#define HIOMAP_C_ERASE 10
|
|
#define HIOMAP_C_DEVICE_NAME 11
|
|
#define HIOMAP_C_LOCK 12
|
|
|
|
#define BLOCK_SHIFT 12 /* 4K */
|
|
|
|
static uint16_t bytes_to_blocks(uint32_t bytes)
|
|
{
|
|
return bytes >> BLOCK_SHIFT;
|
|
}
|
|
|
|
static uint32_t blocks_to_bytes(uint16_t blocks)
|
|
{
|
|
return blocks << BLOCK_SHIFT;
|
|
}
|
|
|
|
static int hiomap_erase(PnvPnor *pnor, uint32_t offset, uint32_t size)
|
|
{
|
|
MemTxResult result;
|
|
int i;
|
|
|
|
for (i = 0; i < size / 4; i++) {
|
|
result = memory_region_dispatch_write(&pnor->mmio, offset + i * 4,
|
|
0xFFFFFFFF, MO_32,
|
|
MEMTXATTRS_UNSPECIFIED);
|
|
if (result != MEMTX_OK) {
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void hiomap_cmd(IPMIBmcSim *ibs, uint8_t *cmd, unsigned int cmd_len,
|
|
RspBuffer *rsp)
|
|
{
|
|
PnvPnor *pnor = PNV_PNOR(object_property_get_link(OBJECT(ibs), "pnor",
|
|
&error_abort));
|
|
uint32_t pnor_size = pnor->size;
|
|
uint32_t pnor_addr = PNOR_SPI_OFFSET;
|
|
bool readonly = false;
|
|
|
|
rsp_buffer_push(rsp, cmd[2]);
|
|
rsp_buffer_push(rsp, cmd[3]);
|
|
|
|
switch (cmd[2]) {
|
|
case HIOMAP_C_MARK_DIRTY:
|
|
case HIOMAP_C_FLUSH:
|
|
case HIOMAP_C_ACK:
|
|
break;
|
|
|
|
case HIOMAP_C_ERASE:
|
|
if (hiomap_erase(pnor, blocks_to_bytes(cmd[5] << 8 | cmd[4]),
|
|
blocks_to_bytes(cmd[7] << 8 | cmd[6]))) {
|
|
rsp_buffer_set_error(rsp, IPMI_CC_UNSPECIFIED);
|
|
}
|
|
break;
|
|
|
|
case HIOMAP_C_GET_INFO:
|
|
rsp_buffer_push(rsp, 2); /* Version 2 */
|
|
rsp_buffer_push(rsp, BLOCK_SHIFT); /* block size */
|
|
rsp_buffer_push(rsp, 0); /* Timeout */
|
|
rsp_buffer_push(rsp, 0); /* Timeout */
|
|
break;
|
|
|
|
case HIOMAP_C_GET_FLASH_INFO:
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_size) & 0xFF);
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_size) >> 8);
|
|
rsp_buffer_push(rsp, 0x01); /* erase size */
|
|
rsp_buffer_push(rsp, 0x00); /* erase size */
|
|
break;
|
|
|
|
case HIOMAP_C_CREATE_READ_WINDOW:
|
|
readonly = true;
|
|
/* Fall through */
|
|
|
|
case HIOMAP_C_CREATE_WRITE_WINDOW:
|
|
memory_region_set_readonly(&pnor->mmio, readonly);
|
|
memory_region_set_enabled(&pnor->mmio, true);
|
|
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_addr) & 0xFF);
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_addr) >> 8);
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_size) & 0xFF);
|
|
rsp_buffer_push(rsp, bytes_to_blocks(pnor_size) >> 8);
|
|
rsp_buffer_push(rsp, 0x00); /* offset */
|
|
rsp_buffer_push(rsp, 0x00); /* offset */
|
|
break;
|
|
|
|
case HIOMAP_C_CLOSE_WINDOW:
|
|
memory_region_set_enabled(&pnor->mmio, false);
|
|
break;
|
|
|
|
case HIOMAP_C_DEVICE_NAME:
|
|
case HIOMAP_C_RESET:
|
|
case HIOMAP_C_LOCK:
|
|
default:
|
|
qemu_log_mask(LOG_GUEST_ERROR, "HIOMAP: unknown command %02X\n", cmd[2]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define HIOMAP 0x5a
|
|
|
|
static const IPMICmdHandler hiomap_cmds[] = {
|
|
[HIOMAP] = { hiomap_cmd, 3 },
|
|
};
|
|
|
|
static const IPMINetfn hiomap_netfn = {
|
|
.cmd_nums = ARRAY_SIZE(hiomap_cmds),
|
|
.cmd_handlers = hiomap_cmds
|
|
};
|
|
|
|
|
|
void pnv_bmc_set_pnor(IPMIBmc *bmc, PnvPnor *pnor)
|
|
{
|
|
if (!pnv_bmc_is_simulator(bmc)) {
|
|
return;
|
|
}
|
|
|
|
object_ref(OBJECT(pnor));
|
|
object_property_add_const_link(OBJECT(bmc), "pnor", OBJECT(pnor));
|
|
|
|
/* Install the HIOMAP protocol handlers to access the PNOR */
|
|
ipmi_sim_register_netfn(IPMI_BMC_SIMULATOR(bmc), IPMI_NETFN_OEM,
|
|
&hiomap_netfn);
|
|
}
|
|
|
|
/*
|
|
* Instantiate the machine BMC. PowerNV uses the QEMU internal
|
|
* simulator but it could also be external.
|
|
*/
|
|
IPMIBmc *pnv_bmc_create(PnvPnor *pnor)
|
|
{
|
|
Object *obj;
|
|
|
|
obj = object_new(TYPE_IPMI_BMC_SIMULATOR);
|
|
qdev_realize(DEVICE(obj), NULL, &error_fatal);
|
|
pnv_bmc_set_pnor(IPMI_BMC(obj), pnor);
|
|
|
|
return IPMI_BMC(obj);
|
|
}
|
|
|
|
typedef struct ForeachArgs {
|
|
const char *name;
|
|
Object *obj;
|
|
} ForeachArgs;
|
|
|
|
static int bmc_find(Object *child, void *opaque)
|
|
{
|
|
ForeachArgs *args = opaque;
|
|
|
|
if (object_dynamic_cast(child, args->name)) {
|
|
if (args->obj) {
|
|
return 1;
|
|
}
|
|
args->obj = child;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
IPMIBmc *pnv_bmc_find(Error **errp)
|
|
{
|
|
ForeachArgs args = { TYPE_IPMI_BMC, NULL };
|
|
int ret;
|
|
|
|
ret = object_child_foreach_recursive(object_get_root(), bmc_find, &args);
|
|
if (ret) {
|
|
error_setg(errp, "machine should have only one BMC device. "
|
|
"Use '-nodefaults'");
|
|
return NULL;
|
|
}
|
|
|
|
return args.obj ? IPMI_BMC(args.obj) : NULL;
|
|
}
|