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Last change
on this file was
e16e8f2,
checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago
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|
bootstuff
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-
Property mode set to
100644
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File size:
449 bytes
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| Rev | Line | |
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| [e16e8f2] | 1 | #include <com32.h> |
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| 2 | #include <string.h> |
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| 3 | #include "pci/pci.h" |
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| 4 | |
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| 5 | uint32_t __pci_read_write_bios(uint32_t call, uint32_t v, pciaddr_t a) |
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| 6 | { |
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| 7 | com32sys_t rs; |
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| 8 | memset(&rs, 0, sizeof rs); |
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| 9 | rs.eax.w[0] = call; |
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| 10 | rs.ebx.w[0] = a >> 8; /* bus:device:function */ |
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| 11 | rs.edi.b[0] = a; /* address:reg */ |
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| 12 | rs.ecx.l = v; |
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| 13 | rs.eflags.l = EFLAGS_CF; |
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| 14 | __intcall(0x1a, &rs, &rs); |
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| 15 | |
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| 16 | return (rs.eflags.l & EFLAGS_CF) ? ~(uint32_t) 0 : rs.ecx.l; |
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| 17 | } |
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