parisc: Add function to return DIMM slot of physical address (25a9b765) · Commits · 戴 / test

arch/parisc/include/asm/pdcpat.h

+15 −1

Original line number	Diff line number	Diff line
		@@ -228,6 +228,17 @@ struct pdc_pat_mem_read_pd_retinfo { /* PDC_PAT_MEM/PDC_PAT_MEM_PD_READ */
		unsigned long pdt_entries;
		};

		struct pdc_pat_mem_phys_mem_location { /* PDC_PAT_MEM/PDC_PAT_MEM_ADDRESS */
		u64 cabinet:8;
		u64 ign1:8;
		u64 ign2:8;
		u64 cell_slot:8;
		u64 ign3:8;
		u64 dimm_slot:8; /* DIMM slot, e.g. 0x1A, 0x2B, show user hex value! */
		u64 ign4:8;
		u64 source:4; /* for mem: always 0x07 */
		u64 source_detail:4; /* for mem: always 0x04 (SIMM or DIMM) */
		};

		struct pdc_pat_pd_addr_map_entry {
		unsigned char entry_type; /* 1 = Memory Descriptor Entry Type */
		@@ -319,6 +330,9 @@ extern int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret,
		extern int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret,
		unsigned long *pdt_entries_ptr, unsigned long count,
		unsigned long offset);
		extern int pdc_pat_mem_get_dimm_phys_location(
		struct pdc_pat_mem_phys_mem_location *pret,
		unsigned long phys_addr);

		#endif /* __ASSEMBLY__ */

+25 −0

Original line number	Diff line number	Diff line
		@@ -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 */