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| author | Helge Deller <deller@gmx.de> | 2017-07-25 19:26:23 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2017-07-25 19:28:37 +0200 |
| commit | 25a9b76597fafbbf688dd4473cb910568deb2b0c (patch) | |
| tree | 0e7b0b216bf0ecdd115ec882bf62213f97cf9352 /arch/parisc/kernel/firmware.c | |
| parent | f520e55241e1cf0c10d308ccf47513f28533f60a (diff) | |
| download | op-kernel-dev-25a9b76597fafbbf688dd4473cb910568deb2b0c.zip op-kernel-dev-25a9b76597fafbbf688dd4473cb910568deb2b0c.tar.gz | |
parisc: Add function to return DIMM slot of physical address
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>
Diffstat (limited to 'arch/parisc/kernel/firmware.c')
| -rw-r--r-- | arch/parisc/kernel/firmware.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c index 526ed90..f622a31 100644 --- a/arch/parisc/kernel/firmware.c +++ b/arch/parisc/kernel/firmware.c @@ -1498,6 +1498,31 @@ int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, return retval; } + +/** + * pdc_pat_mem_get_dimm_phys_location - Get physical DIMM slot via PAT firmware + * @pret: ptr to hold returned information + * @phys_addr: physical address to examine + * + */ +int pdc_pat_mem_get_dimm_phys_location( + struct pdc_pat_mem_phys_mem_location *pret, + unsigned long phys_addr) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_ADDRESS, + __pa(&pdc_result), phys_addr); + + if (retval == PDC_OK) + memcpy(pret, &pdc_result, sizeof(*pret)); + + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} #endif /* CONFIG_64BIT */ |
