ipmi: provide support for FRUs
This patch provides a simple FRU support for the BMC simulator. FRUs are loaded from a file which name is specified in the object properties, each entry having a fixed size, also specified in the properties. If the file is unknown or not accessible for some reason, a unique entry of 1024 bytes is created as a default. Just enough to start some simulation. These commands complies with the IPMI spec : "34. FRU Inventory Device Commands". Signed-off-by: Cédric Le Goater <clg@kaod.org> Acked-by: Corey Minyard <cminyard@mvista.com> [dwg: Folded in subsequent fix to handle NULL filename] Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater
David Gibson
parent
8c6fd7f341
commit
540c07d345
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@ -80,6 +80,9 @@
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#define IPMI_CMD_ENTER_SDR_REP_UPD_MODE 0x2A
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#define IPMI_CMD_EXIT_SDR_REP_UPD_MODE 0x2B
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#define IPMI_CMD_RUN_INIT_AGENT 0x2C
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#define IPMI_CMD_GET_FRU_AREA_INFO 0x10
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#define IPMI_CMD_READ_FRU_DATA 0x11
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#define IPMI_CMD_WRITE_FRU_DATA 0x12
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#define IPMI_CMD_GET_SEL_INFO 0x40
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#define IPMI_CMD_GET_SEL_ALLOC_INFO 0x41
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#define IPMI_CMD_RESERVE_SEL 0x42
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@ -122,6 +125,13 @@ typedef struct IPMISdr {
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uint8_t overflow;
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} IPMISdr;
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typedef struct IPMIFru {
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char *filename;
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unsigned int nentries;
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uint16_t areasize;
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uint8_t *data;
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} IPMIFru;
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typedef struct IPMISensor {
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uint8_t status;
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uint8_t reading;
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@ -213,6 +223,7 @@ struct IPMIBmcSim {
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IPMISel sel;
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IPMISdr sdr;
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IPMIFru fru;
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IPMISensor sensors[MAX_SENSORS];
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char *sdr_filename;
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@ -1317,6 +1328,91 @@ static void get_sel_info(IPMIBmcSim *ibs,
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rsp_buffer_push(rsp, (ibs->sel.overflow << 7) | 0x02);
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}
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static void get_fru_area_info(IPMIBmcSim *ibs,
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uint8_t *cmd, unsigned int cmd_len,
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RspBuffer *rsp)
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{
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uint8_t fruid;
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uint16_t fru_entry_size;
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fruid = cmd[2];
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if (fruid >= ibs->fru.nentries) {
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rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
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return;
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}
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fru_entry_size = ibs->fru.areasize;
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rsp_buffer_push(rsp, fru_entry_size & 0xff);
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rsp_buffer_push(rsp, fru_entry_size >> 8 & 0xff);
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rsp_buffer_push(rsp, 0x0);
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}
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static void read_fru_data(IPMIBmcSim *ibs,
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uint8_t *cmd, unsigned int cmd_len,
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RspBuffer *rsp)
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{
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uint8_t fruid;
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uint16_t offset;
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int i;
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uint8_t *fru_entry;
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unsigned int count;
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fruid = cmd[2];
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offset = (cmd[3] | cmd[4] << 8);
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if (fruid >= ibs->fru.nentries) {
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rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
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return;
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}
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if (offset >= ibs->fru.areasize - 1) {
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rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
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return;
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}
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fru_entry = &ibs->fru.data[fruid * ibs->fru.areasize];
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count = MIN(cmd[5], ibs->fru.areasize - offset);
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rsp_buffer_push(rsp, count & 0xff);
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for (i = 0; i < count; i++) {
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rsp_buffer_push(rsp, fru_entry[offset + i]);
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}
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}
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static void write_fru_data(IPMIBmcSim *ibs,
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uint8_t *cmd, unsigned int cmd_len,
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RspBuffer *rsp)
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{
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uint8_t fruid;
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uint16_t offset;
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uint8_t *fru_entry;
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unsigned int count;
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fruid = cmd[2];
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offset = (cmd[3] | cmd[4] << 8);
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if (fruid >= ibs->fru.nentries) {
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rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
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return;
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}
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if (offset >= ibs->fru.areasize - 1) {
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rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
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return;
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}
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fru_entry = &ibs->fru.data[fruid * ibs->fru.areasize];
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count = MIN(cmd_len - 5, ibs->fru.areasize - offset);
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memcpy(fru_entry + offset, cmd + 5, count);
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rsp_buffer_push(rsp, count & 0xff);
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}
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static void reserve_sel(IPMIBmcSim *ibs,
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uint8_t *cmd, unsigned int cmd_len,
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RspBuffer *rsp)
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@ -1653,6 +1749,9 @@ static const IPMINetfn app_netfn = {
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};
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static const IPMICmdHandler storage_cmds[] = {
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[IPMI_CMD_GET_FRU_AREA_INFO] = { get_fru_area_info, 3 },
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[IPMI_CMD_READ_FRU_DATA] = { read_fru_data, 5 },
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[IPMI_CMD_WRITE_FRU_DATA] = { write_fru_data, 5 },
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[IPMI_CMD_GET_SDR_REP_INFO] = { get_sdr_rep_info },
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[IPMI_CMD_RESERVE_SDR_REP] = { reserve_sdr_rep },
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[IPMI_CMD_GET_SDR] = { get_sdr, 8 },
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@ -1755,6 +1854,36 @@ static const VMStateDescription vmstate_ipmi_sim = {
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}
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};
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static void ipmi_fru_init(IPMIFru *fru)
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{
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int fsize;
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int size = 0;
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if (!fru->filename) {
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goto out;
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}
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fsize = get_image_size(fru->filename);
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if (fsize > 0) {
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size = QEMU_ALIGN_UP(fsize, fru->areasize);
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fru->data = g_malloc0(size);
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if (load_image_size(fru->filename, fru->data, fsize) != fsize) {
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error_report("Could not load file '%s'", fru->filename);
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g_free(fru->data);
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fru->data = NULL;
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}
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}
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out:
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if (!fru->data) {
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/* give one default FRU */
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size = fru->areasize;
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fru->data = g_malloc0(size);
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}
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fru->nentries = size / fru->areasize;
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}
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static void ipmi_sim_realize(DeviceState *dev, Error **errp)
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{
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IPMIBmc *b = IPMI_BMC(dev);
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@ -1776,6 +1905,8 @@ static void ipmi_sim_realize(DeviceState *dev, Error **errp)
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ipmi_sdr_init(ibs);
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ipmi_fru_init(&ibs->fru);
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ibs->acpi_power_state[0] = 0;
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ibs->acpi_power_state[1] = 0;
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@ -1794,6 +1925,8 @@ static void ipmi_sim_realize(DeviceState *dev, Error **errp)
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}
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static Property ipmi_sim_properties[] = {
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DEFINE_PROP_UINT16("fruareasize", IPMIBmcSim, fru.areasize, 1024),
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DEFINE_PROP_STRING("frudatafile", IPMIBmcSim, fru.filename),
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DEFINE_PROP_STRING("sdrfile", IPMIBmcSim, sdr_filename),
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DEFINE_PROP_END_OF_LIST(),
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};
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@ -425,7 +425,7 @@ possible drivers and properties, use @code{-device help} and
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@code{-device @var{driver},help}.
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Some drivers are:
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@item -device ipmi-bmc-sim,id=@var{id}[,slave_addr=@var{val}][,sdrfile=@var{file}]
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@item -device ipmi-bmc-sim,id=@var{id}[,slave_addr=@var{val}][,sdrfile=@var{file}][,furareasize=@var{val}][,furdatafile=@var{file}]
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Add an IPMI BMC. This is a simulation of a hardware management
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interface processor that normally sits on a system. It provides
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@ -443,7 +443,11 @@ The BMC to connect to, one of ipmi-bmc-sim or ipmi-bmc-extern above.
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@item slave_addr=@var{val}
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Define slave address to use for the BMC. The default is 0x20.
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@item sdrfile=@var{file}
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file containing raw Sensor Data Records (SDR) data. The default is none.
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file containing raw Sensor Data Records (SDR) data. The default is none.
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@item fruareasize=@var{val}
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size of a Field Replaceable Unit (FRU) area. The default is 1024.
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@item frudatafile=@var{file}
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file containing raw Field Replaceable Unit (FRU) inventory data. The default is none.
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@end table
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@item -device ipmi-bmc-extern,id=@var{id},chardev=@var{id}[,slave_addr=@var{val}]
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