Dave Jiang wrote:
> v5:
> - Adjust calculation of RPs under HB to only active RPs (Jonathan)
> - See patches for specific change log
>
> This series provides recalculation of the CXL region bandwidth when the targets have
> shared upstream link by walking the toplogy from bottom up and clamp the bandwdith
> as the code trasverses up the tree. An example topology:
traverses
>
> An example topology from Jonathan:
>
> CFMWS 0
> |
> _________|_________
> | |
> ACPI0017-0 ACPI0017-1
> GP0/HB0/ACPI0016-0 GP1/HB1/ACPI0016-1
> | | | |
> RP0 RP1 RP2 RP3
> | | | |
> SW 0 SW 1 SW 2 SW 3
> | | | | | | | |
> EP0 EP1 EP2 EP3 EP4 EP5 EP6 EP7
>
> Computation for the example topology:
>
> Min (GP0 to CPU BW,
> Min(SW 0 Upstream Link to RP0 BW,
> Min(SW0SSLBIS for SW0DSP0 (EP0), EP0 DSLBIS, EP0 Upstream Link) +
> Min(SW0SSLBIS for SW0DSP1 (EP1), EP1 DSLBIS, EP1 Upstream link)) +
> Min(SW 1 Upstream Link to RP1 BW,
> Min(SW1SSLBIS for SW1DSP0 (EP2), EP2 DSLBIS, EP2 Upstream Link) +
> Min(SW1SSLBIS for SW1DSP1 (EP3), EP3 DSLBIS, EP3 Upstream link))) +
> Min (GP1 to CPU BW,
> Min(SW 2 Upstream Link to RP2 BW,
> Min(SW2SSLBIS for SW2DSP0 (EP4), EP4 DSLBIS, EP4 Upstream Link) +
> Min(SW2SSLBIS for SW2DSP1 (EP5), EP5 DSLBIS, EP5 Upstream link)) +
> Min(SW 3 Upstream Link to RP3 BW,
> Min(SW3SSLBIS for SW3DSP0 (EP6), EP6 DSLBIS, EP6 Upstream Link) +
> Min(SW3SSLBIS for SW3DSP1 (EP7), EP7 DSLBIS, EP7 Upstream link))))
Looks good,
Ira
