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110 lines
2.9 KiB
110 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Written by Kanoj Sarcar ([email protected]) Aug 99 |
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* Adapted for the alpha wildfire architecture Jan 2001. |
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*/ |
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#ifndef _ASM_MMZONE_H_ |
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#define _ASM_MMZONE_H_ |
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#include <asm/smp.h> |
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/* |
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* Following are macros that are specific to this numa platform. |
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*/ |
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extern pg_data_t node_data[]; |
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#define alpha_pa_to_nid(pa) \ |
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(alpha_mv.pa_to_nid \ |
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? alpha_mv.pa_to_nid(pa) \ |
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: (0)) |
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#define node_mem_start(nid) \ |
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(alpha_mv.node_mem_start \ |
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? alpha_mv.node_mem_start(nid) \ |
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: (0UL)) |
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#define node_mem_size(nid) \ |
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(alpha_mv.node_mem_size \ |
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? alpha_mv.node_mem_size(nid) \ |
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: ((nid) ? (0UL) : (~0UL))) |
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#define pa_to_nid(pa) alpha_pa_to_nid(pa) |
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#define NODE_DATA(nid) (&node_data[(nid)]) |
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#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn) |
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#if 1 |
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#define PLAT_NODE_DATA_LOCALNR(p, n) \ |
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(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn) |
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#else |
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static inline unsigned long |
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PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) |
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{ |
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unsigned long temp; |
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temp = p >> PAGE_SHIFT; |
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return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn; |
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} |
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#endif |
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#ifdef CONFIG_DISCONTIGMEM |
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/* |
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* Following are macros that each numa implementation must define. |
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*/ |
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/* |
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* Given a kernel address, find the home node of the underlying memory. |
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*/ |
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#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) |
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/* |
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* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory |
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* and returns the kaddr corresponding to first physical page in the |
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* node's mem_map. |
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*/ |
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#define LOCAL_BASE_ADDR(kaddr) \ |
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((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \ |
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<< PAGE_SHIFT)) |
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/* XXX: FIXME -- nyc */ |
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#define kern_addr_valid(kaddr) (0) |
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) |
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#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32)) |
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#define pte_pfn(pte) (pte_val(pte) >> 32) |
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#define mk_pte(page, pgprot) \ |
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({ \ |
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pte_t pte; \ |
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unsigned long pfn; \ |
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\ |
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pfn = page_to_pfn(page) << 32; \ |
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pte_val(pte) = pfn | pgprot_val(pgprot); \ |
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\ |
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pte; \ |
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}) |
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#define pte_page(x) \ |
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({ \ |
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unsigned long kvirt; \ |
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struct page * __xx; \ |
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\ |
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kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \ |
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__xx = virt_to_page(kvirt); \ |
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\ |
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__xx; \ |
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}) |
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#define page_to_pa(page) \ |
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(page_to_pfn(page) << PAGE_SHIFT) |
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#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT)) |
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#define pfn_valid(pfn) \ |
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(((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \ |
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node_spanned_pages(pfn_to_nid(pfn))) \ |
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#define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT)) |
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#endif /* CONFIG_DISCONTIGMEM */ |
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#endif /* _ASM_MMZONE_H_ */
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