65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#ifndef _PMAP_MACHINE_
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#define _PMAP_MACHINE_
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/*
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* Pmap stuff
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* [some ideas borrowed from torek, but no code]
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*/
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struct context_state {
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queue_chain_t context_link;
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int context_num;
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struct pmap *context_upmap;
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};
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typedef struct context_state *context_t;
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struct pmap {
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int pm_refcount; /* pmap reference count */
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simple_lock_data_t pm_lock; /* lock on pmap */
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struct pmap_statistics pm_stats; /* pmap statistics */
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context_t pm_context; /* context if any */
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int pm_version;
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unsigned char *pm_segmap;
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};
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typedef struct pmap *pmap_t;
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extern pmap_t kernel_pmap;
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struct pmeg_state {
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queue_chain_t pmeg_link;
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int pmeg_index;
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pmap_t pmeg_owner;
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int pmeg_owner_version;
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vm_offset_t pmeg_va;
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int pmeg_wired_count;
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int pmeg_reserved;
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int pmeg_vpages;
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};
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typedef struct pmeg_state *pmeg_t;
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#define PMAP_ACTIVATE(pmap, pcbp, iscurproc) \
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pmap_activate(pmap, pcbp, iscurproc);
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#define PMAP_DEACTIVATE(pmap, pcbp) \
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pmap_deactivate(pmap, pcbp)
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#define pmap_kernel() (kernel_pmap)
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/* like the sparc port, use the lower bits of a pa which must be page
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* aligned anyway to pass memtype, caching information.
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*/
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#define PMAP_MMEM 0x0
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#define PMAP_OBIO 0x1
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#define PMAP_VME16D 0x2
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#define PMAP_VME32D 0x3
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#define PMAP_MEMMASK 0x3
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#define PMAP_NC 0x4
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#define PMAP_SPECMASK 0x7
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extern vm_offset_t virtual_avail, virtual_end;
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extern vm_offset_t avail_start, avail_end;
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#endif _PMAP_MACHINE_
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