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| author | Joel Stanley <joel@jms.id.au> | 2014-09-11 15:43:52 +0930 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-10-01 14:23:06 +1000 |
| commit | d3c3e88c3111ffc10eed29fbf8cc524b7a465cb2 (patch) | |
| tree | ad8e6ccc73c0059faa9b201f513a5fc2c22e86a4 | |
| parent | 1e487eb0dd97963298a5b67b0899b36c36eb8747 (diff) | |
| download | skiboot-d3c3e88c3111ffc10eed29fbf8cc524b7a465cb2.zip skiboot-d3c3e88c3111ffc10eed29fbf8cc524b7a465cb2.tar.gz skiboot-d3c3e88c3111ffc10eed29fbf8cc524b7a465cb2.tar.bz2 | |
ipmi: Add ipmi_present API
Similar to the use of fsp_present, this is so code can safely call
functions which may not work on the platform they are running on, or as
protection against calling before the device is initialised.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | core/ipmi.c | 5 | ||||
| -rw-r--r-- | hw/ipmi/ipmi-power.c | 6 | ||||
| -rw-r--r-- | include/ipmi.h | 3 |
3 files changed, 14 insertions, 0 deletions
diff --git a/core/ipmi.c b/core/ipmi.c index 51908cd..67086d6 100644 --- a/core/ipmi.c +++ b/core/ipmi.c @@ -96,3 +96,8 @@ void ipmi_register_backend(struct ipmi_backend *backend) assert(backend->dequeue_msg); ipmi_backend = backend; } + +bool ipmi_present(void) +{ + return ipmi_backend != NULL; +} diff --git a/hw/ipmi/ipmi-power.c b/hw/ipmi/ipmi-power.c index ae3c577..05c0e4c 100644 --- a/hw/ipmi/ipmi-power.c +++ b/hw/ipmi/ipmi-power.c @@ -22,6 +22,9 @@ int ipmi_chassis_control(uint8_t request) { struct ipmi_msg *msg; + if (!ipmi_present()) + return OPAL_CLOSED; + if (request > IPMI_CHASSIS_SOFT_SHUTDOWN) return OPAL_PARAMETER; @@ -44,6 +47,9 @@ int ipmi_set_power_state(uint8_t system, uint8_t device) uint8_t device; } power_state; + if (!ipmi_present()) + return OPAL_CLOSED; + power_state.system = system; power_state.device = device; diff --git a/include/ipmi.h b/include/ipmi.h index c64e1bd..6a438fb 100644 --- a/include/ipmi.h +++ b/include/ipmi.h @@ -18,6 +18,7 @@ #define __IPMI_H #include <stdint.h> +#include <stdbool.h> /* * IPMI codes as defined by the standard. @@ -136,6 +137,8 @@ struct ipmi_backend { /* Initialise the IPMI interface */ void ipmi_init(void); +bool ipmi_present(void); + void ipmi_free_msg(struct ipmi_msg *msg); struct ipmi_msg *ipmi_mkmsg_simple(uint32_t code, void *req_data, size_t req_size); |