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/ IRIX Base Documentation 2002 November / SGI IRIX Base Documentation 2002 November.iso / usr / share / catman / p_man / catD / pptophys.z / pptophys
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Text File  |  2002-10-03  |  2.5 KB  |  66 lines
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  4. ppppppppttttoooopppphhhhyyyyssss((((DDDD3333XXXX))))                                                    ppppppppttttoooopppphhhhyyyyssss((((DDDD3333XXXX))))
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  8. NNNNAAAAMMMMEEEE
  9.      _pppp_pppp_tttt_oooo_pppp_hhhh_yyyy_ssss - convert page pointer to physical address
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  11. SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
  12.      _####_iiii_nnnn_cccc_llll_uuuu_dddd_eeee _<<<<_ssss_yyyy_ssss_////_tttt_yyyy_pppp_eeee_ssss_...._hhhh_>>>>
  13.      _####_iiii_nnnn_cccc_llll_uuuu_dddd_eeee _<<<<_ssss_yyyy_ssss_////_pppp_ffff_dddd_aaaa_tttt_...._hhhh_>>>>
  14.      _####_iiii_nnnn_cccc_llll_uuuu_dddd_eeee _<<<<_ssss_yyyy_ssss_////_dddd_dddd_iiii_...._hhhh_>>>>
  15.      _pppp_aaaa_dddd_dddd_rrrr______tttt _pppp_pppp_tttt_oooo_pppp_hhhh_yyyy_ssss_((((_ssss_tttt_rrrr_uuuu_cccc_tttt _pppp_ffff_dddd_aaaa_tttt _****_p_p_))))_;;;;
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  17.    AAAArrrrgggguuuummmmeeeennnnttttssss
  18.      _p_p        Pointer to the page structure
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  20. DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  21.      _pppp_pppp_tttt_oooo_pppp_hhhh_yyyy_ssss converts a pointer to a page structure to a physical address.
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  23.    RRRReeeettttuuuurrrrnnnn VVVVaaaalllluuuueeeessss
  24.      The physical address represented by the page (pfdat) structure referenced
  25.      by _pppp_pppp.
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  27.      Block drivers can use this address for physical DMA operations during
  28.      paged-I/O requests (see _gggg_eeee_tttt_nnnn_eeee_xxxx_tttt_pppp_gggg(D3X)).
  29.  
  30.    LLLLeeeevvvveeeellll
  31.      Base or Interrupt.
  32.  
  33.    NNNNooootttteeeessss
  34.      Does not sleep.
  35.  
  36.    SSSSeeeeeeee AAAAllllssssoooo
  37.      _ssss_tttt_rrrr_aaaa_tttt_eeee_gggg_yyyy(D2), _gggg_eeee_tttt_nnnn_eeee_xxxx_tttt_pppp_gggg(D3X), _bbbb_uuuu_ffff(D4)
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  62.                                                                         PPPPaaaaggggeeee 1111
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