diff options
| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2016-05-03 11:33:37 -0600 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2016-06-01 15:42:54 -0600 |
| commit | 1525472db066e6d9a56b8b0f6ef040b43bdc3cbe (patch) | |
| tree | d05b1544ee158d2f18862c476d99a1003847a7ae /include | |
| parent | 8ebbc16a38eea98885d097b14551dcc378ba0ba5 (diff) | |
stm class: Support devices that override software assigned masters
Some STM devices adjust software assigned master numbers depending on
the trace source and its runtime state and whatnot. This patch adds
a sysfs attribute to inform the trace-side software that master numbers
assigned to software sources will not match those in the STP stream,
so that, for example, master/channel allocation policy can be adjusted
accordingly.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 8e996a2874bbbed30e8dfe881453825fc6b7654e)
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/stm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/stm.h b/include/linux/stm.h index 1a79ed8e43da..8369d8a8cabd 100644 --- a/include/linux/stm.h +++ b/include/linux/stm.h @@ -50,6 +50,8 @@ struct stm_device; * @sw_end: last STP master available to software * @sw_nchannels: number of STP channels per master * @sw_mmiosz: size of one channel's IO space, for mmap, optional + * @hw_override: masters in the STP stream will not match the ones + * assigned by software, but are up to the STM hardware * @packet: callback that sends an STP packet * @mmio_addr: mmap callback, optional * @link: called when a new stm_source gets linked to us, optional @@ -85,6 +87,7 @@ struct stm_data { unsigned int sw_end; unsigned int sw_nchannels; unsigned int sw_mmiosz; + unsigned int hw_override; ssize_t (*packet)(struct stm_data *, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, |