VSC7440 datasheet(260/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

243

Figure 77 •

AFI TUPE

The full algorithm used by AFI TUPE is shown in the following pseudo code. Configuration parameters

are prefixed "csr.".

// AFI Table UPdate Engine (AFI TUPE) Algorithm

bool tupe_ctrl_match;

for (addr = csr.tupe_start_addr; addr < csr.tupe_end_addr; addr++) {

tti_tbl_entry = tti_tbl[addr];

tupe_ctrl_match = FALSE;

for (i = 0; i < 2; i++) {

if ((tti_tbl_entry.tupe_ctrl & csr.crit_tupe_ctrl_mask) ==

csr.crit_tupe_ctrl_val[i]) {

tupe_ctrl_match = TRUE;

}

if (

(// Check matching TUPE_CTRL value

tupe_ctrl_match)

(// If enabled, check if TTI's PORT_NUM matches csr.crit_port_num_val

!csr.crit_port_num_ena

(tti_tbl_entry.port_num == csr.crit_port_num_val))

(// If enabled, check if TTI's QU_NUM matches csr.crit_qu_num_val

!csr.crit_qu_num_ena

(tti_tbl_entry.qu_num == csr.crit_qu_num_val))

) {

// TTI fulfills criterias => Apply TUPE command to TTI

// timer_ena

if (csr.cmd_timer_ena_ena) {

tti_tbl_entry.timer_ena = csr.cmd_timer_ena_val;

TTI Table (AFI:TTI_TBL)

TUPE_CTRL

Other TTI parameters

AFI TUPE Algorithm

AFI TUPE

Criteria (CRIT)

and

Command (CMD)

Parameters

TUPE_START_ADDR

TUPE_END_ADDR

Possibly new value s for TTI

VSC7440 Datasheet(PDF) 260 Page - Microsemi Corporation

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