bridge_ccc0_mprt_6_81_am_sts
When reordering is disabled on the master bridge, hazard stall occurs if the master tries to access a new slave device while response from a different slave is outstanding on the same AID. This is because the responses can arrive out of order and the bridge is not equipped to correct the order. Without re-order buffers, hazard stalls also occur if a new large command needs to be split while there are older commands outstanding, or a large command just finished sending all its split segments but all responses have not returned yet.
When reordering is enabled, stall due to hazard occurs if a new command arrives, whose NoC QoS is different from the NoC QoS of commands outstanding on that AID
Module Instance | Base Address | Register Address |
---|---|---|
i_ccu_noc_registers | 0xF7000000 | 0xF703BD00 |
Size: 64
Offset: 0x3BD00
Access: RO
Access mode: SECURE | PRIVILEGEMODE
Note: The processor must make a secure, privileged bus access to this register. You can configure processor mode settings in the control registers of the ARM Cortex-A53 MPcore processor. For more information about processor modes, please refer to the ARM Infocenter.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
63 | 62 | 61 | 60 | 59 | 58 | 57 | 56 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 48 |
UNSD_63_8 RO 0x0 |
|||||||||||||||
47 | 46 | 45 | 44 | 43 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 32 |
UNSD_63_8 RO 0x0 |
|||||||||||||||
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
UNSD_63_8 RO 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UNSD_63_8 RO 0x0 |
AWO RO 0x0 |
ARO RO 0x0 |
AWS RO 0x0 |
ARS RO 0x0 |
WOE RO 0x1 |
ROE RO 0x1 |
WOF RO 0x0 |
ROF RO 0x0 |
bridge_ccc0_mprt_6_81_am_sts Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
63:8 | UNSD_63_8 |
|
RO | 0x0 |
7 | AWO |
1'b1: Write commands are outstanding to the slave specified in OSSLV register |
RO | 0x0 |
6 | ARO |
1'b1: Read commands are outstanding to the slave specified in OSSLV register |
RO | 0x0 |
5 | AWS |
1'b1: AW channel is stalled on hazard |
RO | 0x0 |
4 | ARS |
1'b1: AR channel is stalled on hazard |
RO | 0x0 |
3 | WOE |
|
RO | 0x1 |
2 | ROE |
|
RO | 0x1 |
1 | WOF |
1'b1: Maximum supported number of write commands are outstanding waiting for response and no more requests can be accepted 1'b0: Master bridge can accept more write requests |
RO | 0x0 |
0 | ROF |
1'b1: Maximum supported number of read commands are outstanding waiting for response and no more requests can be accepted 1'b0: Master bridge can accept more read requests |
RO | 0x0 |