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Kernel/PCI: Add a bunch of debug output to accessors

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This was useful for debugging this issue.
This commit is contained in:
Luke 2020-12-22 04:22:32 +00:00 • committed by Andreas Kling
parent 9ab9e548f4
commit 69d7a34bc2
3 changed files with 90 additions and 9 deletions
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26
Kernel/PCI/MMIOAccess.cpp
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@ -29,6 +29,8 @@
#include <Kernel/PCI/MMIOAccess.h>
#include <Kernel/VM/MemoryManager.h>
//#define PCI_DEBUG
namespace Kernel {
namespace PCI {
@ -80,8 +82,12 @@ uint8_t MMIOAccess::segment_end_bus(u32 seg) const
void MMIOAccess::initialize(PhysicalAddress mcfg)
{
if (!Access::is_initialized())
if (!Access::is_initialized()) {
new MMIOAccess(mcfg);
#ifdef PCI_DEBUG
dbg() << "PCI: MMIO access initialised.";
#endif
}
}
MMIOAccess::MMIOAccess(PhysicalAddress p_mcfg)
@ -133,6 +139,9 @@ MMIOAccess::MMIOAccess(PhysicalAddress p_mcfg)
Optional<VirtualAddress> MMIOAccess::get_device_configuration_space(Address address)
{
#ifdef PCI_DEBUG
dbg() << "PCI: Getting device configuration space for " << address;
#endif
for (auto& mapping : m_mapped_device_regions) {
auto checked_address = mapping.address();
#ifdef PCI_DEBUG
@ -148,6 +157,9 @@ Optional<VirtualAddress> MMIOAccess::get_device_configuration_space(Address addr
return mapping.vaddr();
}
}
#ifdef PCI_DEBUG
dbg() << "PCI: No device configuration space found for " << address;
#endif
return {};
}
@ -156,7 +168,7 @@ u8 MMIOAccess::read8_field(Address address, u32 field)
InterruptDisabler disabler;
ASSERT(field <= 0xfff);
#ifdef PCI_DEBUG
dbg() << "PCI: Reading field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ")";
dbg() << "PCI: MMIO Reading 8-bit field 0x" << String::formatted("{:08x}", field) << " for " << address;
#endif
return *((u8*)(get_device_configuration_space(address).value().get() + (field & 0xfff)));
}
@ -166,7 +178,7 @@ u16 MMIOAccess::read16_field(Address address, u32 field)
InterruptDisabler disabler;
ASSERT(field < 0xfff);
#ifdef PCI_DEBUG
dbg() << "PCI: Reading field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ")";
dbg() << "PCI: MMIO Reading 16-bit field 0x" << String::formatted("{:08x}", field) << " for " << address;
#endif
return *((u16*)(get_device_configuration_space(address).value().get() + (field & 0xfff)));
}
@ -176,7 +188,7 @@ u32 MMIOAccess::read32_field(Address address, u32 field)
InterruptDisabler disabler;
ASSERT(field <= 0xffc);
#ifdef PCI_DEBUG
dbg() << "PCI: Reading field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ")";
dbg() << "PCI: MMIO Reading 32-bit field 0x" << String::formatted("{:08x}", field) << " for " << address;
#endif
return *((u32*)(get_device_configuration_space(address).value().get() + (field & 0xfff)));
}
@ -186,7 +198,7 @@ void MMIOAccess::write8_field(Address address, u32 field, u8 value)
InterruptDisabler disabler;
ASSERT(field <= 0xfff);
#ifdef PCI_DEBUG
dbg() << "PCI: Writing to field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ") value 0x" << String::format("%x", value);
dbg() << "PCI: MMIO Writing to 8-bit field 0x" << String::formatted("{:08x}", field) << ", value=0x" << String::formatted("{:02x}", value) << " for " << address;
#endif
*((u8*)(get_device_configuration_space(address).value().get() + (field & 0xfff))) = value;
}
@ -195,7 +207,7 @@ void MMIOAccess::write16_field(Address address, u32 field, u16 value)
InterruptDisabler disabler;
ASSERT(field < 0xfff);
#ifdef PCI_DEBUG
dbg() << "PCI: Writing to field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ") value 0x" << String::format("%x", value);
dbg() << "PCI: MMIO Writing to 16-bit field 0x" << String::formatted("{:08x}", field) << ", value=0x" << String::formatted("{:04x}", value) << " for " << address;
#endif
*((u16*)(get_device_configuration_space(address).value().get() + (field & 0xfff))) = value;
}
@ -204,7 +216,7 @@ void MMIOAccess::write32_field(Address address, u32 field, u32 value)
InterruptDisabler disabler;
ASSERT(field <= 0xffc);
#ifdef PCI_DEBUG
dbg() << "PCI: Writing to field " << field << ", Address(" << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%b", address.function()) << ") value 0x" << String::format("%x", value);
dbg() << "PCI: MMIO Writing to 32-bit field 0x" << String::formatted("{:08x}", field) << ", value=0x" << String::formatted("{:08x}", value) << " for " << address;
#endif
*((u32*)(get_device_configuration_space(address).value().get() + (field & 0xfff))) = value;
}