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[Yellowstone] Add method to get XHCI configuration space.

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This commit is contained in:
Drew Galbraith 2024-02-06 20:49:43 -08:00
parent 27c39d05e8
commit 3bacfea183
11 changed files with 172 additions and 4 deletions
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17
sys/yellowstone/hw/pcie.cpp
View file

@ -4,7 +4,7 @@
#include <mammoth/util/init.h>
#include <zcall.h>
#define PCI_DEBUG 0
#define PCI_DEBUG 1
namespace {
@ -32,6 +32,13 @@ z_cap_t PciReader::GetAhciVmmo() {
return new_cap;
}
z_cap_t PciReader::GetXhciVmmo() {
uint64_t new_cap;
check(ZMemoryObjectDuplicate(gBootPciVmmoCap, xhci_device_offset_,
kPcieConfigurationSize, &new_cap));
return new_cap;
}
void PciReader::FunctionDump(uint64_t base, uint64_t bus, uint64_t dev,
uint64_t fun) {
PciDeviceHeader* hdr = PciHeader(base, bus, dev, fun);
@ -55,6 +62,14 @@ void PciReader::FunctionDump(uint64_t base, uint64_t bus, uint64_t dev,
#endif
achi_device_offset_ = reinterpret_cast<uint64_t>(hdr) - base;
}
if (hdr->class_code == 0xC && hdr->subclass == 0x3) {
if (hdr->prog_interface == 0x30) {
xhci_device_offset_ = reinterpret_cast<uint64_t>(hdr) - base;
} else {
dbgln("WARN: Non-XHCI USB Controller found");
}
}
}
void PciReader::DeviceDump(uint64_t base, uint64_t bus, uint64_t dev) {

2
sys/yellowstone/hw/pcie.h
View file

@ -28,11 +28,13 @@ class PciReader {
PciReader();
z_cap_t GetAhciVmmo();
z_cap_t GetXhciVmmo();
private:
PciDeviceHeader* header_;
uint64_t achi_device_offset_ = 0;
uint64_t xhci_device_offset_ = 0;
void PciDump(uint64_t vaddr);
void BusDump(uint64_t base, uint64_t bus);