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Add some AHCI debugging dumps

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Justin C. Miller
2018-05-20 02:02:06 -07:00
parent 81fc559802
commit 193d9939f0
3 changed files with 25 additions and 12 deletions
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26
src/kernel/pci.cpp
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@@ -97,21 +97,25 @@ pci_device::pci_device(pci_group &group, uint8_t bus, uint8_t device, uint8_t fu
uint16_t *command = reinterpret_cast<uint16_t *>(&m_base[1]);
*command |= 0x400; // Mask old INTx style interrupts
uint16_t *status = command + 1;
log::info(logs::device, "Found PCIe device at %02d:%02d:%d of type %d.%d id %04x:%04x",
bus, device, func, m_class, m_subclass, m_vendor, m_device);
// Walk the extended capabilities list
uint8_t next = m_base[13] & 0xff;
while (next) {
pci_cap *cap = reinterpret_cast<pci_cap *>(kutil::offset_pointer(m_base, next));
next = cap->next;
log::debug(logs::device, " - found PCI cap type %02x", cap->id);
if (*status & 0x0010) {
// Walk the extended capabilities list
uint8_t next = m_base[13] & 0xff;
while (next) {
pci_cap *cap = reinterpret_cast<pci_cap *>(kutil::offset_pointer(m_base, next));
next = cap->next;
log::debug(logs::device, " - found PCI cap type %02x", cap->id);
if (cap->id == pci_cap::type::msi) {
m_msi = cap;
pci_cap_msi *mcap = reinterpret_cast<pci_cap_msi *>(cap);
mcap->control &= ~0x70; // at most 1 vector allocated
mcap->control |= 0x01; // Enable interrupts, at most 1 vector allocated
if (cap->id == pci_cap::type::msi) {
m_msi = cap;
pci_cap_msi *mcap = reinterpret_cast<pci_cap_msi *>(cap);
mcap->control &= ~0x70; // at most 1 vector allocated
mcap->control |= 0x01; // Enable interrupts, at most 1 vector allocated
}
}
}
}