diff options
| author | Iwona Winiarska <iwona.winiarska@intel.com> | 2022-02-08 18:36:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-09 10:04:44 +0300 |
| commit | 42bed52b2e9cda0d5e2de50f10478c0bcedcdb95 (patch) | |
| tree | 760f1e4540b51352365516cbba1909a44885c73b /drivers/peci/internal.h | |
| parent | 52857e6828e260b16ac569578705f83cf2a71ac1 (diff) | |
| download | linux-42bed52b2e9cda0d5e2de50f10478c0bcedcdb95.tar.xz | |
peci: Add sysfs interface for PECI bus
PECI devices may not be discoverable at the time when PECI controller is
being added (e.g. BMC can boot up when the Host system is still in S5).
Since we currently don't have the capabilities to figure out the Host
system state inside the PECI subsystem itself, we have to rely on
userspace to do it for us.
In the future, PECI subsystem may be expanded with mechanisms that allow
us to avoid depending on userspace interaction (e.g. CPU presence could
be detected using GPIO, and the information on whether it's discoverable
could be obtained over IPMI).
Unfortunately, those methods may ultimately not be available (support
will vary from platform to platform), which means that we still need
platform independent method triggered by userspace.
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com>
Link: https://lore.kernel.org/r/20220208153639.255278-8-iwona.winiarska@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/peci/internal.h')
| -rw-r--r-- | drivers/peci/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/peci/internal.h b/drivers/peci/internal.h index 57d11a902c5d..978e12c8e1d3 100644 --- a/drivers/peci/internal.h +++ b/drivers/peci/internal.h @@ -8,6 +8,7 @@ #include <linux/types.h> struct peci_controller; +struct attribute_group; struct peci_device; struct peci_request; @@ -19,12 +20,16 @@ struct peci_request *peci_request_alloc(struct peci_device *device, u8 tx_len, u void peci_request_free(struct peci_request *req); extern struct device_type peci_device_type; +extern const struct attribute_group *peci_device_groups[]; int peci_device_create(struct peci_controller *controller, u8 addr); void peci_device_destroy(struct peci_device *device); extern struct bus_type peci_bus_type; +extern const struct attribute_group *peci_bus_groups[]; extern struct device_type peci_controller_type; +int peci_controller_scan_devices(struct peci_controller *controller); + #endif /* __PECI_INTERNAL_H */ |