86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __KGSL_GPUMMU_H
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#define __KGSL_GPUMMU_H
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#define GSL_PT_PAGE_BITS_MASK 0x00000007
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#define GSL_PT_PAGE_ADDR_MASK PAGE_MASK
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#define GSL_MMU_INT_MASK \
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(MH_INTERRUPT_MASK__AXI_READ_ERROR | \
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MH_INTERRUPT_MASK__AXI_WRITE_ERROR)
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/* Macros to manage TLB flushing */
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#define GSL_TLBFLUSH_FILTER_ENTRY_NUMBITS (sizeof(unsigned char) * 8)
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#define GSL_TLBFLUSH_FILTER_GET(superpte) \
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(*((unsigned char *) \
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(((unsigned int)gpummu_pt->tlbflushfilter.base) \
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+ (superpte / GSL_TLBFLUSH_FILTER_ENTRY_NUMBITS))))
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#define GSL_TLBFLUSH_FILTER_SETDIRTY(superpte) \
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(GSL_TLBFLUSH_FILTER_GET((superpte)) |= 1 << \
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(superpte % GSL_TLBFLUSH_FILTER_ENTRY_NUMBITS))
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#define GSL_TLBFLUSH_FILTER_ISDIRTY(superpte) \
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(GSL_TLBFLUSH_FILTER_GET((superpte)) & \
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(1 << (superpte % GSL_TLBFLUSH_FILTER_ENTRY_NUMBITS)))
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#define GSL_TLBFLUSH_FILTER_RESET() memset(gpummu_pt->tlbflushfilter.base,\
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0, gpummu_pt->tlbflushfilter.size)
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extern struct kgsl_mmu_ops gpummu_ops;
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extern struct kgsl_mmu_pt_ops gpummu_pt_ops;
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struct kgsl_tlbflushfilter {
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unsigned int *base;
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unsigned int size;
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};
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struct kgsl_gpummu_pt {
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struct kgsl_memdesc base;
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unsigned int last_superpte;
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unsigned int tlb_flags;
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/* Maintain filter to manage tlb flushing */
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struct kgsl_tlbflushfilter tlbflushfilter;
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};
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struct kgsl_ptpool_chunk {
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size_t size;
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unsigned int count;
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int dynamic;
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void *data;
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unsigned int phys;
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unsigned long *bitmap;
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struct list_head list;
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};
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struct kgsl_ptpool {
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size_t ptsize;
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struct mutex lock;
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struct list_head list;
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int entries;
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int static_entries;
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int chunks;
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};
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void *kgsl_gpummu_ptpool_init(int ptsize,
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int entries);
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void kgsl_gpummu_ptpool_destroy(void *ptpool);
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static inline unsigned int kgsl_pt_get_base_addr(struct kgsl_pagetable *pt)
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{
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struct kgsl_gpummu_pt *gpummu_pt = pt->priv;
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return gpummu_pt->base.gpuaddr;
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}
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#endif /* __KGSL_GPUMMU_H */
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