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| author | Helge Deller <deller@gmx.de> | 2026-02-06 21:26:40 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2026-02-07 00:45:19 +0100 |
| commit | 0b3b90a0f971e4289367f172cfc36c934741b209 (patch) | |
| tree | 1ba2bdd46dc3c302eb33a2b34baeae0433ea4d61 /arch/parisc/include/asm | |
| parent | 5ff7842103f60b29b9907d25b371f65d5b40bbe4 (diff) | |
| download | lwn-0b3b90a0f971e4289367f172cfc36c934741b209.tar.gz lwn-0b3b90a0f971e4289367f172cfc36c934741b209.zip | |
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 <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include/asm')
| -rw-r--r-- | arch/parisc/include/asm/pdcpat.h | 7 |
1 files changed, 5 insertions, 2 deletions
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, |