Linux issues this command when booting a powernv machine.
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
include/hw/ipmi/ipmi.h | 14 +++++++++
hw/ipmi/ipmi_bmc_sim.c | 65 ++++++++++++++++++++++++++++++++++++++++--
hw/ipmi/ipmi_bt.c | 2 ++
hw/ipmi/ipmi_kcs.c | 1 +
4 files changed, 80 insertions(+), 2 deletions(-)
diff --git a/include/hw/ipmi/ipmi.h b/include/hw/ipmi/ipmi.h
index 71c4efac8cd..d1af660012a 100644
--- a/include/hw/ipmi/ipmi.h
+++ b/include/hw/ipmi/ipmi.h
@@ -41,6 +41,15 @@ enum ipmi_op {
IPMI_SEND_NMI
};
+/* Channel properties */
+#define IPMI_CHANNEL_IPMB 0x00
+#define IPMI_CHANNEL_SYSTEM 0x0f
+#define IPMI_CHANNEL_MEDIUM_IPMB 0x01
+#define IPMI_CHANNEL_MEDIUM_SYSTEM 0x0c
+#define IPMI_CHANNEL_PROTOCOL_IPMB 0x01
+#define IPMI_CHANNEL_PROTOCOL_KCS 0x05
+#define IPMI_CHANNEL_PROTOCOL_BT_15 0x08
+
#define IPMI_CC_INVALID_CMD 0xc1
#define IPMI_CC_COMMAND_INVALID_FOR_LUN 0xc2
#define IPMI_CC_TIMEOUT 0xc3
@@ -175,6 +184,11 @@ struct IPMIInterfaceClass {
* Return the firmware info for a device.
*/
void (*get_fwinfo)(struct IPMIInterface *s, IPMIFwInfo *info);
+
+ /*
+ * IPMI channel protocol type number.
+ */
+ uint8_t protocol;
};
/*
diff --git a/hw/ipmi/ipmi_bmc_sim.c b/hw/ipmi/ipmi_bmc_sim.c
index 6157ac71201..216bf8ff7f0 100644
--- a/hw/ipmi/ipmi_bmc_sim.c
+++ b/hw/ipmi/ipmi_bmc_sim.c
@@ -70,6 +70,7 @@
#define IPMI_CMD_GET_MSG 0x33
#define IPMI_CMD_SEND_MSG 0x34
#define IPMI_CMD_READ_EVT_MSG_BUF 0x35
+#define IPMI_CMD_GET_CHANNEL_INFO 0x42
#define IPMI_NETFN_STORAGE 0x0a
@@ -1020,8 +1021,8 @@ static void send_msg(IPMIBmcSim *ibs,
uint8_t *buf;
uint8_t netfn, rqLun, rsLun, rqSeq;
- if (cmd[2] != 0) {
- /* We only handle channel 0 with no options */
+ if (cmd[2] != IPMI_CHANNEL_IPMB) {
+ /* We only handle channel 0h (IPMB) with no options */
rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
return;
}
@@ -1219,6 +1220,65 @@ static void get_watchdog_timer(IPMIBmcSim *ibs,
}
}
+static void get_channel_info(IPMIBmcSim *ibs,
+ uint8_t *cmd, unsigned int cmd_len,
+ RspBuffer *rsp)
+{
+ IPMIInterface *s = ibs->parent.intf;
+ IPMIInterfaceClass *k = IPMI_INTERFACE_GET_CLASS(s);
+ uint8_t ch = cmd[2] & 0x0f;
+
+ /* Only define channel 0h (IPMB) and Fh (system interface) */
+
+ if (ch == 0x0e) { /* "This channel" */
+ ch = IPMI_CHANNEL_SYSTEM;
+ }
+ rsp_buffer_push(rsp, ch);
+
+ if (ch != IPMI_CHANNEL_IPMB && ch != IPMI_CHANNEL_SYSTEM) {
+ /* Not a supported channel */
+ rsp_buffer_set_error(rsp, IPMI_CC_INVALID_DATA_FIELD);
+ return;
+ }
+
+ if (ch == IPMI_CHANNEL_IPMB) {
+ rsp_buffer_push(rsp, IPMI_CHANNEL_MEDIUM_IPMB);
+ rsp_buffer_push(rsp, IPMI_CHANNEL_PROTOCOL_IPMB);
+ } else { /* IPMI_CHANNEL_SYSTEM */
+ rsp_buffer_push(rsp, IPMI_CHANNEL_MEDIUM_SYSTEM);
+ rsp_buffer_push(rsp, k->protocol);
+ }
+
+ rsp_buffer_push(rsp, 0x00); /* Session-less */
+
+ /* IPMI Enterprise Number for Vendor ID */
+ rsp_buffer_push(rsp, 0xf2);
+ rsp_buffer_push(rsp, 0x1b);
+ rsp_buffer_push(rsp, 0x00);
+
+ if (ch == IPMI_CHANNEL_SYSTEM) {
+ IPMIFwInfo info = {};
+ uint8_t irq;
+
+ k->get_fwinfo(s, &info);
+ if (info.irq == IPMI_ISA_IRQ) {
+ irq = info.interrupt_number;
+ } else if (info.irq == IPMI_PCI_IRQ) {
+ irq = 0x10 + info.interrupt_number;
+ } else {
+ irq = 0xff; /* no interrupt / unspecified */
+ }
+
+ /* Both interrupts use the same irq number */
+ rsp_buffer_push(rsp, irq);
+ rsp_buffer_push(rsp, irq);
+ } else {
+ /* Reserved */
+ rsp_buffer_push(rsp, 0x00);
+ rsp_buffer_push(rsp, 0x00);
+ }
+}
+
static void get_sdr_rep_info(IPMIBmcSim *ibs,
uint8_t *cmd, unsigned int cmd_len,
RspBuffer *rsp)
@@ -2015,6 +2075,7 @@ static const IPMICmdHandler app_cmds[] = {
[IPMI_CMD_RESET_WATCHDOG_TIMER] = { reset_watchdog_timer },
[IPMI_CMD_SET_WATCHDOG_TIMER] = { set_watchdog_timer, 8 },
[IPMI_CMD_GET_WATCHDOG_TIMER] = { get_watchdog_timer },
+ [IPMI_CMD_GET_CHANNEL_INFO] = { get_channel_info, 3 },
};
static const IPMINetfn app_netfn = {
.cmd_nums = ARRAY_SIZE(app_cmds),
diff --git a/hw/ipmi/ipmi_bt.c b/hw/ipmi/ipmi_bt.c
index 583fc64730c..79311c41f2b 100644
--- a/hw/ipmi/ipmi_bt.c
+++ b/hw/ipmi/ipmi_bt.c
@@ -434,4 +434,6 @@ void ipmi_bt_class_init(IPMIInterfaceClass *iic)
iic->handle_if_event = ipmi_bt_handle_event;
iic->set_irq_enable = ipmi_bt_set_irq_enable;
iic->reset = ipmi_bt_handle_reset;
+ /* BT System Interface Format, IPMI v1.5 */
+ iic->protocol = IPMI_CHANNEL_PROTOCOL_BT_15;
}
diff --git a/hw/ipmi/ipmi_kcs.c b/hw/ipmi/ipmi_kcs.c
index c15977cab4c..618a33c581f 100644
--- a/hw/ipmi/ipmi_kcs.c
+++ b/hw/ipmi/ipmi_kcs.c
@@ -420,4 +420,5 @@ void ipmi_kcs_class_init(IPMIInterfaceClass *iic)
iic->handle_rsp = ipmi_kcs_handle_rsp;
iic->handle_if_event = ipmi_kcs_handle_event;
iic->set_irq_enable = ipmi_kcs_set_irq_enable;
+ iic->protocol = IPMI_CHANNEL_PROTOCOL_KCS;
}
--
2.47.1
