xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

uwb: improved MAS allocator and reservation conflict handling

Browse Source 
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>
This commit is contained in:
Stefano Panella
2008-12-12 13:00:06 +00:00
committed by David Vrabel
parent c35fa3ea1a
commit 5b37717a23
12 changed files with 1605 additions and 329 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
drivers/uwb/uwb-internal.h
View File

@@ -92,6 +92,12 @@ extern const char *uwb_rc_strerror(unsigned code);
struct uwb_rc_neh;
extern int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
struct uwb_rccb *cmd, size_t cmd_size,
u8 expected_type, u16 expected_event,
uwb_rc_cmd_cb_f cb, void *arg);
void uwb_rc_neh_create(struct uwb_rc *rc);
void uwb_rc_neh_destroy(struct uwb_rc *rc);
@@ -106,7 +112,69 @@ void uwb_rc_neh_put(struct uwb_rc_neh *neh);
extern int uwb_est_create(void);
extern void uwb_est_destroy(void);
/*
* UWB conflicting alien reservations
*/
struct uwb_cnflt_alien {
struct uwb_rc *rc;
struct list_head rc_node;
struct uwb_mas_bm mas;
struct timer_list timer;
struct work_struct cnflt_update_work;
};
enum uwb_uwb_rsv_alloc_result {
UWB_RSV_ALLOC_FOUND = 0,
UWB_RSV_ALLOC_NOT_FOUND,
};
enum uwb_rsv_mas_status {
UWB_RSV_MAS_NOT_AVAIL = 1,
UWB_RSV_MAS_SAFE,
UWB_RSV_MAS_UNSAFE,
};
struct uwb_rsv_col_set_info {
unsigned char start_col;
unsigned char interval;
unsigned char safe_mas_per_col;
unsigned char unsafe_mas_per_col;
};
struct uwb_rsv_col_info {
unsigned char max_avail_safe;
unsigned char max_avail_unsafe;
unsigned char highest_mas[UWB_MAS_PER_ZONE];
struct uwb_rsv_col_set_info csi;
};
struct uwb_rsv_row_info {
unsigned char avail[UWB_MAS_PER_ZONE];
unsigned char free_rows;
unsigned char used_rows;
};
/*
* UWB find allocation
*/
struct uwb_rsv_alloc_info {
unsigned char bm[UWB_MAS_PER_ZONE * UWB_NUM_ZONES];
struct uwb_rsv_col_info ci[UWB_NUM_ZONES];
struct uwb_rsv_row_info ri;
struct uwb_mas_bm *not_available;
struct uwb_mas_bm *result;
int min_mas;
int max_mas;
int max_interval;
int total_allocated_mases;
int safe_allocated_mases;
int unsafe_allocated_mases;
int interval;
};
int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available,
struct uwb_mas_bm *result);
void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc);
/*
* UWB Events & management daemon
*/
@@ -254,18 +322,28 @@ void uwb_rsv_init(struct uwb_rc *rc);
int uwb_rsv_setup(struct uwb_rc *rc);
void uwb_rsv_cleanup(struct uwb_rc *rc);
void uwb_rsv_remove_all(struct uwb_rc *rc);
void uwb_rsv_get(struct uwb_rsv *rsv);
void uwb_rsv_put(struct uwb_rsv *rsv);
bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv);
void uwb_rsv_dump(char *text, struct uwb_rsv *rsv);
int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available);
void uwb_rsv_backoff_win_timer(unsigned long arg);
void uwb_rsv_backoff_win_increment(struct uwb_rc *rc);
int uwb_rsv_status(struct uwb_rsv *rsv);
int uwb_rsv_companion_status(struct uwb_rsv *rsv);
void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state);
void uwb_rsv_remove(struct uwb_rsv *rsv);
struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_ie_drp *drp_ie);
void uwb_rsv_sched_update(struct uwb_rc *rc);
void uwb_rsv_queue_update(struct uwb_rc *rc);
void uwb_drp_handle_timeout(struct uwb_rsv *rsv);
int uwb_drp_ie_update(struct uwb_rsv *rsv);
void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie);
void uwb_drp_avail_init(struct uwb_rc *rc);
void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail);
int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas);