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boot/efi/dtb: dump PCI interrupt map

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see:
https://www.kernel.org/doc/Documentation/devicetree/bindings/pci/host-generic-pci.txt
https://www.devicetree.org/open-firmware/practice/imap/imap0_9d.pdf

Change-Id: Iba53457384d6330f99ac0b3b6b2894da83471c48
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5537
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Fredrik Holmqvist <[email protected]>
This commit is contained in:
David Karoly
2022-08-09 13:35:42 +00:00
parent f5aba47edd
commit 0404f954c1
1 changed files with 68 additions and 12 deletions
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src/system/boot/platform/efi/dtb.cpp
+68 -12
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@@ -234,20 +234,76 @@ dump_fdt(const void *fdt)
} else if (strcmp(fdt_string(fdt, fdt32_to_cpu(property->nameoff)), "interrupt-map") == 0) {
dprintf("\n");
depth++;
for (uint32_t *it = (uint32_t*)property->data; (uint8_t*)it - (uint8_t*)property->data < fdt32_to_cpu(property->len); it += 6) {
int addressCells = 3;
int interruptCells = 1;
int phandleCells = 1;
uint32 *prop;
prop = (uint32*)fdt_getprop(fdt, node, "#address-cells", NULL);
if (prop != NULL)
addressCells = fdt32_to_cpu(*prop);
prop = (uint32*)fdt_getprop(fdt, node, "#interrupt-cells", NULL);
if (prop != NULL)
interruptCells = fdt32_to_cpu(*prop);
uint32_t *it = (uint32_t*)property->data;
while ((uint8_t*)it - (uint8_t*)property->data < fdt32_to_cpu(property->len)) {
for (int i = 0; i < depth; i++)
dprintf(" ");
// child unit address
dprintf("0x%08" PRIx32 ", 0x%08" PRIx32 ", 0x%08" PRIx32 ", 0x%08" PRIx32
", bus: %" PRId32 ", dev: %" PRId32 ", fn: %" PRId32,
fdt32_to_cpu(*(it + 0)), fdt32_to_cpu(*(it + 1)), fdt32_to_cpu(*(it + 2)), fdt32_to_cpu(*(it + 3)),
fdt32_to_cpu(*(it + 0)) / (1 << 16) % (1 << 8),
fdt32_to_cpu(*(it + 0)) / (1 << 11) % (1 << 5),
fdt32_to_cpu(*(it + 0)) % (1 << 3));
dprintf(", childIrq: %" PRId32 ", parentIrq: (%" PRId32 ", %" PRId32 ")\n",
fdt32_to_cpu(*(it + 3)), fdt32_to_cpu(*(it + 4)), fdt32_to_cpu(*(it + 5)));
if (((it - (uint32_t*)property->data) / 6) % 4 == 3 && ((uint8_t*)(it + 6) - (uint8_t*)property->data < fdt32_to_cpu(property->len)))
dprintf("\n");
uint32 childAddr = fdt32_to_cpu(*it);
dprintf("childAddr: ");
for (int i = 0; i < addressCells; i++) {
dprintf("0x%08" PRIx32 " ", fdt32_to_cpu(*it));
it++;
}
uint8 bus = childAddr / (1 << 16) % (1 << 8);
uint8 dev = childAddr / (1 << 11) % (1 << 5);
uint8 func = childAddr % (1 << 3);
dprintf("(bus: %" PRId32 ", dev: %" PRId32 ", fn: %" PRId32 "), ",
bus, dev, func);
dprintf("childIrq: ");
for (int i = 0; i < interruptCells; i++) {
dprintf("%" PRIu32 " ", fdt32_to_cpu(*it));
it++;
}
uint32 parentPhandle = fdt32_to_cpu(*it);
it += phandleCells;
dprintf("parentPhandle: %" PRId32 ", ", parentPhandle);
int parentAddressCells = 0;
int parentInterruptCells = 1;
int parentNode = fdt_node_offset_by_phandle(fdt, parentPhandle);
if (parentNode >= 0) {
prop = (uint32*)fdt_getprop(fdt, parentNode, "#address-cells", NULL);
if (prop != NULL)
parentAddressCells = fdt32_to_cpu(*prop);
prop = (uint32*)fdt_getprop(fdt, parentNode, "#interrupt-cells", NULL);
if (prop != NULL)
parentInterruptCells = fdt32_to_cpu(*prop);
}
dprintf("parentAddress: ");
for (int i = 0; i < parentAddressCells; i++) {
dprintf("%" PRIu32 " ", fdt32_to_cpu(*it));
it++;
}
dprintf("parentIrq: ");
for (int i = 0; i < parentInterruptCells; i++) {
dprintf("%" PRIu32 " ", fdt32_to_cpu(*it));
it++;
}
dprintf("\n");
}
for (int i = 0; i < depth; i++)
dprintf(" ");