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>
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David Vrabel
parent
c35fa3ea1a
commit
5b37717a23
@ -58,7 +58,7 @@ void uwb_drp_avail_init(struct uwb_rc *rc)
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*
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* avail = global & local & pending
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*/
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static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
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void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
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{
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bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
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bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS);
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@ -105,6 +105,7 @@ void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas)
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bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
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bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
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rc->drp_avail.ie_valid = false;
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uwb_rsv_handle_drp_avail_change(rc);
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}
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/**
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@ -280,6 +281,7 @@ int uwbd_evt_handle_rc_drp_avail(struct uwb_event *evt)
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mutex_lock(&rc->rsvs_mutex);
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bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS);
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rc->drp_avail.ie_valid = false;
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uwb_rsv_handle_drp_avail_change(rc);
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mutex_unlock(&rc->rsvs_mutex);
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uwb_rsv_sched_update(rc);
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