aboutsummaryrefslogtreecommitdiffstats
path: root/arch/parisc/include/asm/pdcpat.h (follow)
AgeCommit message (Collapse)AuthorFilesLines
2022-03-29parisc: Add PDC locking functions for rendezvous codeHelge Deller1-1/+2
Add pdc_cpu_rendezvous_lock() and pdc_cpu_rendezvous_unlock() to lock PDC while CPU is transitioning into rendezvous state. This is needed, because the transition phase may take up to 8 seconds. Add pdc_pat_get_PDC_entrypoint() to get PDC entry point for current CPU. Signed-off-by: Helge Deller <deller@gmx.de>
2019-02-21parisc: Add constant for PDC_PAT_COMPLEX firmware callHelge Deller1-0/+4
Signed-off-by: Helge Deller <deller@gmx.de>
2018-10-19parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functionsHelge Deller1-13/+41
Add wrappers for the PDC_PAT_CELL_GET_INFO and PDC_PAT_PD_GET_PDC_INTERF_REV PAT PDC subfunctions. Both provide access to the PAT capability bitfield which can guide us if simultaneous PTLBs are allowed on the bus, and if firmware will rendezvous all processors within PDCE_Check in case of an HPMC. Signed-off-by: Helge Deller <deller@gmx.de>
2018-10-17parisc: Add SYSTEM_INFO and REGISTER TOC PAT functionsHelge Deller1-0/+8
Signed-off-by: Helge Deller <deller@gmx.de>
2017-08-22parisc: PDT/firmware: Add support to read PDT on older PAT-machinesHelge Deller1-0/+14
Older machines with a PAT firmware (e.g. the rp5470) return their Page Deallocation Table (PDT) info per cell via the PDC_PAT_MEM_PD_INFO PDC call. This patch adds the necessary structures and wrappers to call firmware. Signed-off-by: Helge Deller <deller@gmx.de>
2017-07-25parisc: Add function to return DIMM slot of physical addressHelge Deller1-1/+15
Add a firmware wrapper function, which asks PDC firmware for the DIMM slot of a physical address. This is needed to show users which DIMM module needs replacement in case a broken DIMM was encountered. Signed-off-by: Helge Deller <deller@gmx.de>
2017-05-12parisc: Add Page Deallocation Table (PDT) supportHelge Deller1-9/+26
The firmare in most parisc machines maintains a Page Deallocation Table (PDT) which holds a list of physical memory addresses where hardware detected memory errors (single bit and double bit errors). This patch adds the missing PDC firmware calls and the logic to read the PDT from firmware, report all current PDT entries and exclude the reported bad memory from being used by Linux. Signed-off-by: Helge Deller <deller@gmx.de>
2016-12-12parisc: Enhance CPU detection code on PAT machinesHelge Deller1-1/+1
This patch fixes the debug code which runs during the inventory scan on machines with PAT firmware. Additionally print out the relationship between the detected logical CPU number and it's physical location and physical cpu number. This leads to information which can be used to feed numa-structures in the kernel in later patches. An example output is from my single-CPU (2 cores) C8000 machine is: Logical CPU #0 is physical cpu #0 at 0xffff0000ffff15, hpa 0xfffffffffe780000 Logical CPU #1 is physical cpu #1 at 0xffff0000ffff15, hpa 0xfffffffffe781000 Signed-off-by: Helge Deller <deller@gmx.de>
2008-10-10parisc: move include/asm-parisc to arch/parisc/include/asmKyle McMartin1-0/+308
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.