On 2019-04-13 12:23 p.m., Helge Deller wrote: > On 10.04.19 21:27, John David Anglin wrote: >> On 2019-04-10 3:10 p.m., John David Anglin wrote: >>> Was merced bus used on PA 1.x? If not, then the locks could be >>> removed. >> Openpa states that merced bus was used in L1500, L3000 and N4000. All are Pa 2.0, >> so locks are not needed. > And according to https://www.openpa.net/pa-risc_chipsets_stretch.html > it seems that a IKE I/O controller is used on Stretch only. > So, detecting an IKE should be sufficient to check if we need > to avoid multiple TLB flushed on the bus... > In hardware.c, we have: {HPHW_BCPORT, 0x800, 0x0000C, 0x10, "DEW BC Merced Port"}, {HPHW_BCPORT, 0x801, 0x0000C, 0x10, "SMC Bus Interface Merced Bus0"}, {HPHW_BCPORT, 0x802, 0x0000C, 0x10, "SMC Bus INterface Merced Bus1"}, {HPHW_BCPORT, 0x803, 0x0000C, 0x10, "IKE I/O BC Merced Port"}, {HPHW_BCPORT, 0x781, 0x0000C, 0x00, "IKE I/O BC Ropes Port"}, {HPHW_BCPORT, 0x804, 0x0000C, 0x10, "REO I/O BC Merced Port"}, {HPHW_BCPORT, 0x782, 0x0000C, 0x00, "REO I/O BC Ropes Port"}, Dave -- John David Anglin dave.anglin@xxxxxxxx
