ROCE_ACCL Register Layout
|
Offset |
Bits |
Name |
Description |
Access |
|---|---|---|---|---|
|
00h |
28 |
adp_retx_profile_select |
In query, indicates that adp_retx_profile_id and adp_retx_profile are supported and valid. In set, indicates that the profile indicated adp_retx_profile_id is modified with the parameters in adp_retx_profile. |
RW |
|
0 |
roce_adp_retrans_field_select |
In Query, indicates if roce_adp_retrans mode is configurable. In set, indicates roce_adp_retrans_en field is modified. |
RW |
|
|
04h |
30:28 |
adp_retx_profile_id |
The index of the adaptive-retransmission profile to query or to modify. Value 0 is reserved. Valid if adp_retrans_timeouts_profile_select is set. Must comply with adp_retx_profile_max_id |
Index |
|
0 |
roce_adp_retrans_en |
If set, the adaptive retransmission window functionality is enabled. Valid only when roce_adp_retrans_field_select == 1. |
RW |
|
|
08h |
30:28 |
adp_retx_profile_max_range_num |
Maximal number of timeout ranges in adp_retx_profile |
RO |
|
26:24 |
adp_retx_profile_max_id |
Maximal index supported for adp_retx_profile_id |
RO |
|
|
19:0 |
adp_retx_base_timeout_min |
The minimal base-timeout value for adp_retx_profile, given in nano second units |
RO |
|
|
10h-3Ch |
384 |
adp_retx_profile (Table 1004, “Adaptive Retransmission Profile Layout,” on page 1912) |
Adaptive Retransmission profile |
RW |
Adaptive Retransmission Profile Layout
|
Offset |
Bits |
Name |
Description |
Access |
|---|---|---|---|---|
|
00h |
31 |
qp_total_timeout |
If set, Total Retransmission Timeout will use QP parameters as timeout value, given by QP.retry_count * QP.timeout or QP.extended_retry_count * QP.timeout If clr, retx_total_timeout is used |
|
|
30:28 |
range_num |
Number of valid ranges in timeout_range[] array |
|
|
|
26:24 |
start_range_index |
Index of timeout_range used as the first range following QP creation. |
|
|
|
23:22 |
time_unit |
Time granularity of time_base 0x1: TIME_USEC – microseconds Other values are reserved |
|
|
|
15:0 |
time_base |
Base value for all time parameter, units defined by time_unit |
|
|
|
04h |
31:24 |
retx_total_timeout |
Total Retransmission Timeout, given by base_time << retx_total_timeout Valid if qp_total_timeout is 0x0. |
|
|
15:8 |
timeout_init_low_bound |
Lower bound for QP initial timeout randomization, given by base_time << timeout_init_low_bound |
|
|
|
7:0 |
timeout_init_range_size |
Upper bound for QP initial timeout randomization, given by base_time << (timeout_init_low_bound + timeout_init_range_size) |
|
|
|
08h-14h |
31:0 |
timeout_range[4] (Table 1006, “Adaptive Retransmiss ion Timeout Range Layout,” on page 1167) |
Array of timeout ranges. First range_num entries are valid. |
|
Adaptive Retransmission Timeout Range Layout Layout
|
Offset |
Bits |
Name |
Description |
Access |
|---|---|---|---|---|
|
00h |
30:28 |
prev_range_index |
Index of the timeout range to used when the current timeout is the range’s lower-bound, and timeout should be decreased |
|
|
27:26 |
dec_mode |
Defines the behavior of timeout decrease until lower bound is reached 0x0: TO_DIV_4 0x1: TO_DIV_2 0x2: TO_LOW_BOUND Other values are reserved |
|
|
|
25:16 |
timeout_retry_num |
Number of consecutive retransmissions attempts with the same imeout value, before timeout is increased. |
|
|
|
15:8 |
range_low_bound |
Lower bound of the timeout range, given by base_time << range_low_bound |
|
|
|
7:0 |
range_size |
Upper bound of the timeout range given by base_time << (range_low_bound + range_size) |
|
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