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pci: pci_getenum, pci_getcapoffset and finding msi and msix on function enumeration

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Matheus
2023-07-15 18:02:17 -03:00
parent d202e152db
commit 6491d1bd52
3 changed files with 109 additions and 6 deletions
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kernel-src/include/x86-64/arch/pci.h
+2 -2
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@@ -51,7 +51,7 @@ static uint32_t mcfg_read32(int bus, int device, int function, uint32_t offset)
return 0xffffffff;
uint64_t base = (uint64_t)MAKE_HHDM(entry->address);
uint32_t *address = (uint32_t *)(base + ((bus - entry->startbus) << 20) + (device << 15) + (function << 12));
uint32_t *address = (uint32_t *)(base | ((bus - entry->startbus) << 20) | (device << 15) | (function << 12) | (offset & ~0x3));
return *address;
}
@@ -60,7 +60,7 @@ static void mcfg_write32(int bus, int device, int function, uint32_t offset, uin
mcfgentry_t *entry = getmcfgentry(bus);
uint64_t base = (uint64_t)MAKE_HHDM(entry->address);
uint32_t *address = (uint32_t *)(base + ((bus - entry->startbus) << 20) + (device << 15) + (function << 12));
uint32_t *address = (uint32_t *)(base | ((bus - entry->startbus) << 20) | (device << 15) | (function << 12) | (offset & ~0x3));
*address = value;
}