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| author | Stefano Panella <stefano.panella@csr.com> | 2008-12-12 13:00:06 +0000 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-12-12 13:00:06 +0000 |
| commit | 5b37717a23b8e40f6cf7ad85a26ddcf41c171e2c (patch) | |
| tree | 3c611f907bc61c6e1900c4092e8f2f1e8eefd907 /include/linux/uwb | |
| parent | c35fa3ea1ae8198bd65c2c6e59d9ebd68c115a59 (diff) | |
| download | kernel_samsung_crespo-5b37717a23b8e40f6cf7ad85a26ddcf41c171e2c.zip kernel_samsung_crespo-5b37717a23b8e40f6cf7ad85a26ddcf41c171e2c.tar.gz kernel_samsung_crespo-5b37717a23b8e40f6cf7ad85a26ddcf41c171e2c.tar.bz2 | |
uwb: improved MAS allocator and reservation conflict handling
Greatly enhance the MAS allocator:
- Handle row and column reservations.
- Permit all the available MAS to be allocated.
- Follows the WiMedia rules on MAS selection.
Take appropriate action when reservation conflicts are detected.
- Correctly identify which reservation wins the conflict.
- Protect alien BP reservations.
- If an owned reservation loses, resize/move it.
- Follow the backoff procedure before requesting additional MAS.
When reservations are terminated, move the remaining reservations (if
necessary) so they keep following the MAS allocation rules.
Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Diffstat (limited to 'include/linux/uwb')
| -rw-r--r-- | include/linux/uwb/debug-cmd.h | 2 | ||||
| -rw-r--r-- | include/linux/uwb/spec.h | 25 |
2 files changed, 26 insertions, 1 deletions
diff --git a/include/linux/uwb/debug-cmd.h b/include/linux/uwb/debug-cmd.h index 07efbe1..8da004e 100644 --- a/include/linux/uwb/debug-cmd.h +++ b/include/linux/uwb/debug-cmd.h @@ -43,7 +43,7 @@ struct uwb_dbg_cmd_rsv_establish { __u8 type; __u16 max_mas; __u16 min_mas; - __u8 sparsity; + __u8 max_interval; }; struct uwb_dbg_cmd_rsv_terminate { diff --git a/include/linux/uwb/spec.h b/include/linux/uwb/spec.h index a30436e..b52e44f 100644 --- a/include/linux/uwb/spec.h +++ b/include/linux/uwb/spec.h @@ -59,6 +59,11 @@ enum { UWB_NUM_ZONES = 16 }; #define UWB_MAS_PER_ZONE (UWB_NUM_MAS / UWB_NUM_ZONES) /* + * Number of MAS required before a row can be considered available. + */ +#define UWB_USABLE_MAS_PER_ROW (UWB_NUM_ZONES - 1) + +/* * Number of streams per DRP reservation between a pair of devices. * * [ECMA-368] section 16.8.6. @@ -94,6 +99,26 @@ enum { UWB_BEACON_SLOT_LENGTH_US = 85 }; enum { UWB_MAX_LOST_BEACONS = 3 }; /* + * mDRPBackOffWinMin + * + * The minimum number of superframes to wait before trying to reserve + * extra MAS. + * + * [ECMA-368] section 17.16 + */ +enum { UWB_DRP_BACKOFF_WIN_MIN = 2 }; + +/* + * mDRPBackOffWinMax + * + * The maximum number of superframes to wait before trying to reserve + * extra MAS. + * + * [ECMA-368] section 17.16 + */ +enum { UWB_DRP_BACKOFF_WIN_MAX = 16 }; + +/* * Length of a superframe in microseconds. */ #define UWB_SUPERFRAME_LENGTH_US (UWB_MAS_LENGTH_US * UWB_NUM_MAS) |