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pcireg: Work around POSIX-UEFI standard library limitations

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RichardG867
2021-10-15 15:45:08 -03:00
parent d5ef740d2d
commit be764fa196
4 changed files with 17 additions and 2 deletions
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5
clib/clib.h
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@@ -30,6 +30,11 @@
# define PACKED
#endif
/* Platform-specific macros. */
#ifndef __POSIX_UEFI__
# define FMT_FLOAT_SUPPORTED 1
#endif
#pragma pack(push, 0)
/* Convenience type for breaking a dword value down into words and bytes. */

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pcireg/PCIREG.EFI
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pcireg/PCIREG.EXE
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14
pcireg/pcireg.c
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@@ -870,12 +870,17 @@ dump_info(uint8_t bus, uint8_t dev, uint8_t func)
/* Read command and status. */
reg_val.u32 = pci_readl(bus, dev, func, 0x04);
/* Print command and status flags. */
/* Print command and status flags... except on UEFI target,
as something somewhere in the POSIX-UEFI pipeline mangles
the pointers to all strings in our lookup arrays after
command_flags[0]. Ugh. */
#ifndef __POSIX_UEFI__
printf("\n\nCommand:");
info_flags_helper(reg_val.u16[0], command_flags);
printf("\n Status:");
info_flags_helper(reg_val.u16[1], status_flags);
printf(" DEVSEL[%s]", devsel[(reg_val.u16[1] >> 9) & 3]);
#endif
/* Read revision and class ID. */
reg_val.u32 = pci_readl(bus, dev, func, 0x08);
@@ -923,13 +928,18 @@ dump_info(uint8_t bus, uint8_t dev, uint8_t func)
reg_val.u32 = pci_readl(bus, dev, func, 0x3c);
/* Print interrupt if present. */
if (reg_val.u16[0] && (reg_val.u16[0] != 0xffff))
if (reg_val.u16[0] && (reg_val.u8[0] != 0xff))
printf("\nInterrupt: INT%c (IRQ %d)", '@' + (reg_val.u8[1] & 15), reg_val.u8[0] & 15);
/* Print latency and grant if available. */
if ((header_type & 0x7f) == 0x00) {
#ifdef FMT_FLOAT_SUPPORTED
printf("\nMin Grant: %.0f us at 33 MHz", reg_val.u8[2] * 0.25);
printf("\nMax Latency: %.0f us at 33 MHz", reg_val.u8[3] * 0.25);
#else
printf("\nMin Grant: (%d * 0.25) us at 33 MHz", reg_val.u8[2]);
printf("\nMax Latency: (%d * 0.25) us at 33 MHz", reg_val.u8[3]);
#endif
}
/* Read and print BARs. */