From: Cédric Le Goater <c...@fr.ibm.com>
Currently, sdr attributes are identified using byte offsets and this
can be a bit confusing.
This patch adds a struct ipmi_sdr_compact conforming to the IPMI specs
and replaces byte offsets with names. It also introduces and uses a
struct ipmi_sdr_header in sections of the code where no assumption is
made on the type of SDR. This leave rooms to potential usage of other
types in the future.
Signed-off-by: Cédric Le Goater <c...@fr.ibm.com>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
include/hw/ipmi/ipmi.h | 45 +++++++++++++++++++++++++++++++
hw/ipmi/ipmi_bmc_sim.c | 72 ++++++++++++++++++++++++++++++--------------------
2 files changed, 89 insertions(+), 28 deletions(-)
diff --git a/include/hw/ipmi/ipmi.h b/include/hw/ipmi/ipmi.h
index 32bac0f..74a2b5a 100644
--- a/include/hw/ipmi/ipmi.h
+++ b/include/hw/ipmi/ipmi.h
@@ -210,4 +210,49 @@ IPMIFwInfo *ipmi_next_fwinfo(IPMIFwInfo *current);
#define ipmi_debug(fs, ...)
#endif
+struct ipmi_sdr_header {
+ uint8_t rec_id[2];
+ uint8_t sdr_version; /* 0x51 */
+ uint8_t rec_type;
+ uint8_t rec_length;
+};
+#define IPMI_SDR_HEADER_SIZE sizeof(struct ipmi_sdr_header)
+
+#define ipmi_sdr_recid(sdr) ((sdr)->rec_id[0] | ((sdr)->rec_id[1] << 8))
+#define ipmi_sdr_length(sdr) ((sdr)->rec_length + IPMI_SDR_HEADER_SIZE)
+
+/*
+ * 43.2 SDR Type 02h. Compact Sensor Record
+ */
+#define IPMI_SDR_COMPACT_TYPE 2
+
+struct ipmi_sdr_compact {
+ struct ipmi_sdr_header header;
+
+ uint8_t sensor_owner_id;
+ uint8_t sensor_owner_lun;
+ uint8_t sensor_owner_number; /* byte 8 */
+ uint8_t entity_id;
+ uint8_t entity_instance;
+ uint8_t sensor_init;
+ uint8_t sensor_caps;
+ uint8_t sensor_type;
+ uint8_t reading_type;
+ uint8_t assert_mask[2]; /* byte 16 */
+ uint8_t deassert_mask[2];
+ uint8_t discrete_mask[2];
+ uint8_t sensor_unit1;
+ uint8_t sensor_unit2;
+ uint8_t sensor_unit3;
+ uint8_t sensor_direction[2]; /* byte 24 */
+ uint8_t positive_threshold;
+ uint8_t negative_threshold;
+ uint8_t reserved[3];
+ uint8_t oem;
+ uint8_t id_str_len; /* byte 32 */
+ uint8_t id_string[16];
+};
+
+typedef uint8_t ipmi_sdr_compact_buffer[sizeof(struct ipmi_sdr_compact)];
+
#endif
diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c
index 73a4f6a..84fbcd2 100644
--- a/hw/ipmi/ipmi_bmc_sim.c
+++ b/hw/ipmi/ipmi_bmc_sim.c
@@ -318,14 +318,18 @@ static void sdr_inc_reservation(IPMISdr *sdr)
}
}
-static int sdr_add_entry(IPMIBmcSim *ibs, const uint8_t *entry,
+static int sdr_add_entry(IPMIBmcSim *ibs,
+ const struct ipmi_sdr_header *sdrh_entry,
unsigned int len, uint16_t *recid)
{
- if ((len < 5) || (len > 255)) {
+ struct ipmi_sdr_header *sdrh =
+ (struct ipmi_sdr_header *) &ibs->sdr.sdr[ibs->sdr.next_free];
+
+ if ((len < IPMI_SDR_HEADER_SIZE) || (len > 255)) {
return 1;
}
- if (entry[4] != len - 5) {
+ if (ipmi_sdr_length(sdrh_entry) != len) {
return 1;
}
@@ -334,10 +338,10 @@ static int sdr_add_entry(IPMIBmcSim *ibs, const uint8_t
*entry,
return 1;
}
- memcpy(ibs->sdr.sdr + ibs->sdr.next_free, entry, len);
- ibs->sdr.sdr[ibs->sdr.next_free] = ibs->sdr.next_rec_id & 0xff;
- ibs->sdr.sdr[ibs->sdr.next_free+1] = (ibs->sdr.next_rec_id >> 8) & 0xff;
- ibs->sdr.sdr[ibs->sdr.next_free+2] = 0x51; /* Conform to IPMI 1.5 spec */
+ memcpy(sdrh, sdrh_entry, len);
+ sdrh->rec_id[0] = ibs->sdr.next_rec_id & 0xff;
+ sdrh->rec_id[1] = (ibs->sdr.next_rec_id >> 8) & 0xff;
+ sdrh->sdr_version = 0x51; /* Conform to IPMI 1.5 spec */
if (recid) {
*recid = ibs->sdr.next_rec_id;
@@ -355,8 +359,10 @@ static int sdr_find_entry(IPMISdr *sdr, uint16_t recid,
unsigned int pos = *retpos;
while (pos < sdr->next_free) {
- uint16_t trec = sdr->sdr[pos] | (sdr->sdr[pos + 1] << 8);
- unsigned int nextpos = pos + sdr->sdr[pos + 4] + 5;
+ struct ipmi_sdr_header *sdrh =
+ (struct ipmi_sdr_header *) &sdr->sdr[pos];
+ uint16_t trec = ipmi_sdr_recid(sdrh);
+ unsigned int nextpos = pos + ipmi_sdr_length(sdrh);
if (trec == recid) {
if (nextrec) {
@@ -505,29 +511,32 @@ static void ipmi_init_sensors_from_sdrs(IPMIBmcSim *s)
pos = 0;
for (i = 0; !sdr_find_entry(&s->sdr, i, &pos, NULL); i++) {
- uint8_t *sdr = s->sdr.sdr + pos;
- unsigned int len = sdr[4];
+ struct ipmi_sdr_compact *sdr =
+ (struct ipmi_sdr_compact *) &s->sdr.sdr[pos];
+ unsigned int len = sdr->header.rec_length;
if (len < 20) {
continue;
}
- if ((sdr[3] < 1) || (sdr[3] > 2)) {
+ if (sdr->header.rec_type != IPMI_SDR_COMPACT_TYPE) {
continue; /* Not a sensor SDR we set from */
}
- if (sdr[7] > MAX_SENSORS) {
+ if (sdr->sensor_owner_number > MAX_SENSORS) {
continue;
}
- sens = s->sensors + sdr[7];
+ sens = s->sensors + sdr->sensor_owner_number;
IPMI_SENSOR_SET_PRESENT(sens, 1);
- IPMI_SENSOR_SET_SCAN_ON(sens, (sdr[10] >> 6) & 1);
- IPMI_SENSOR_SET_EVENTS_ON(sens, (sdr[10] >> 5) & 1);
- sens->assert_suppt = sdr[14] | (sdr[15] << 8);
- sens->deassert_suppt = sdr[16] | (sdr[17] << 8);
- sens->states_suppt = sdr[18] | (sdr[19] << 8);
- sens->sensor_type = sdr[12];
- sens->evt_reading_type_code = sdr[13] & 0x7f;
+ IPMI_SENSOR_SET_SCAN_ON(sens, (sdr->sensor_init >> 6) & 1);
+ IPMI_SENSOR_SET_EVENTS_ON(sens, (sdr->sensor_init >> 5) & 1);
+ sens->assert_suppt = sdr->assert_mask[0] | (sdr->assert_mask[1] << 8);
+ sens->deassert_suppt =
+ sdr->deassert_mask[0] | (sdr->deassert_mask[1] << 8);
+ sens->states_suppt =
+ sdr->discrete_mask[0] | (sdr->discrete_mask[1] << 8);
+ sens->sensor_type = sdr->sensor_type;
+ sens->evt_reading_type_code = sdr->reading_type & 0x7f;
/* Enable all the events that are supported. */
sens->assert_enable = sens->assert_suppt;
@@ -1153,6 +1162,7 @@ static void get_sdr(IPMIBmcSim *ibs,
{
unsigned int pos;
uint16_t nextrec;
+ struct ipmi_sdr_header *sdrh;
IPMI_CHECK_CMD_LEN(8);
if (cmd[6]) {
@@ -1164,7 +1174,10 @@ static void get_sdr(IPMIBmcSim *ibs,
rsp[2] = IPMI_CC_REQ_ENTRY_NOT_PRESENT;
return;
}
- if (cmd[6] > (ibs->sdr.sdr[pos + 4] + 5)) {
+
+ sdrh = (struct ipmi_sdr_header *) &ibs->sdr.sdr[pos];
+
+ if (cmd[6] > ipmi_sdr_length(sdrh)) {
rsp[2] = IPMI_CC_PARM_OUT_OF_RANGE;
return;
}
@@ -1173,7 +1186,7 @@ static void get_sdr(IPMIBmcSim *ibs,
IPMI_ADD_RSP_DATA((nextrec >> 8) & 0xff);
if (cmd[7] == 0xff) {
- cmd[7] = ibs->sdr.sdr[pos + 4] + 5 - cmd[6];
+ cmd[7] = ipmi_sdr_length(sdrh) - cmd[6];
}
if ((cmd[7] + *rsp_len) > max_rsp_len) {
@@ -1190,8 +1203,9 @@ static void add_sdr(IPMIBmcSim *ibs,
unsigned int max_rsp_len)
{
uint16_t recid;
+ struct ipmi_sdr_header *sdrh = (struct ipmi_sdr_header *) cmd + 2;
- if (sdr_add_entry(ibs, cmd + 2, cmd_len - 2, &recid)) {
+ if (sdr_add_entry(ibs, sdrh, cmd_len - 2, &recid)) {
rsp[2] = IPMI_CC_INVALID_DATA_FIELD;
return;
}
@@ -1642,13 +1656,15 @@ static void ipmi_sim_init(Object *obj)
}
for (i = 0;;) {
+ struct ipmi_sdr_header *sdrh;
int len;
- if ((i + 5) > sizeof(init_sdrs)) {
+ if ((i + IPMI_SDR_HEADER_SIZE) > sizeof(init_sdrs)) {
error_report("Problem with recid 0x%4.4x", i);
return;
}
- len = init_sdrs[i + 4] + 5;
- recid = init_sdrs[i] | (init_sdrs[i + 1] << 8);
+ sdrh = (struct ipmi_sdr_header *) &init_sdrs[i];
+ len = ipmi_sdr_length(sdrh);
+ recid = ipmi_sdr_recid(sdrh);
if (recid == 0xffff) {
break;
}
@@ -1656,7 +1672,7 @@ static void ipmi_sim_init(Object *obj)
error_report("Problem with recid 0x%4.4x", i);
return;
}
- sdr_add_entry(ibs, init_sdrs + i, len, NULL);
+ sdr_add_entry(ibs, sdrh, len, NULL);
i += len;
}
--
MST
