From 0b3b90a0f971e4289367f172cfc36c934741b209 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Fri, 6 Feb 2026 21:26:40 +0100 Subject: parisc: Add PDC PAT call to get free running 64-bit counter PDC PAT defines this optional function. Testing on my C8000 workstation and a rp3440 server did not indicate that they provide such counter. Nevertheless, add the function since we should try to use such a counter if it's available. In Qemu it should be simple to add it. Signed-off-by: Helge Deller --- arch/parisc/include/asm/pdcpat.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/parisc/include/asm') diff --git a/arch/parisc/include/asm/pdcpat.h b/arch/parisc/include/asm/pdcpat.h index 84ac81b1adde..ec97eefa4ef6 100644 --- a/arch/parisc/include/asm/pdcpat.h +++ b/arch/parisc/include/asm/pdcpat.h @@ -179,6 +179,7 @@ #define PDC_PAT_PD 74L /* Protection Domain Info */ #define PDC_PAT_PD_GET_ADDR_MAP 0L /* Get Address Map */ #define PDC_PAT_PD_GET_PDC_INTERF_REV 1L /* Get PDC Interface Revisions */ +#define PDC_PAT_PD_GET_PLATFORM_COUNTER 10L /* Get 64-bit free running counter */ #define PDC_PAT_CAPABILITY_BIT_PDC_SERIALIZE (1UL << 0) #define PDC_PAT_CAPABILITY_BIT_PDC_POLLING (1UL << 1) @@ -373,9 +374,11 @@ extern int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, unsigned long count, unsigned long offset); extern int pdc_pat_pd_get_pdc_revisions(unsigned long *legacy_rev, unsigned long *pat_rev, unsigned long *pdc_cap); +extern int pdc_pat_pd_get_platform_counter(uint64_t **addr, + unsigned long *freq, unsigned long *uniq); -extern int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *val); -extern int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val); +extern int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *val); +extern int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val); extern int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo); extern int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo, -- cgit v1.2.3