Kernel/Storage: Add support for IDE controllers in PCI native mode

Also handle native and compatibility channel modes together, so if only
one IDE channel was set to work on PCI native mode, we need to handle it
separately, so the other channel continue to operate with the legacy IO
ports and interrupt line.

1 files changed, 24 insertions, 8 deletions

diff --git a/Kernel/Storage/IDEChannel.cpp b/Kernel/Storage/IDEChannel.cpp
index 52e324a8d3..f8b7418130 100644
--- a/Kernel/Storage/IDEChannel.cpp
+++ b/Kernel/Storage/IDEChannel.cpp
@@ -49,6 +49,11 @@ UNMAP_AFTER_INIT NonnullRefPtr<IDEChannel> IDEChannel::create(const IDEControlle
     return adopt(*new IDEChannel(controller, io_group, type));
 }
 
+UNMAP_AFTER_INIT NonnullRefPtr<IDEChannel> IDEChannel::create(const IDEController& controller, u8 irq, IOAddressGroup io_group, ChannelType type)
+{
+    return adopt(*new IDEChannel(controller, irq, io_group, type));
+}
+
 RefPtr<StorageDevice> IDEChannel::master_device() const
 {
     return m_master;
@@ -59,16 +64,9 @@ RefPtr<StorageDevice> IDEChannel::slave_device() const
     return m_slave;
 }
 
-UNMAP_AFTER_INIT IDEChannel::IDEChannel(const IDEController& controller, IOAddressGroup io_group, ChannelType type)
-    : IRQHandler(type == ChannelType::Primary ? PATA_PRIMARY_IRQ : PATA_SECONDARY_IRQ)
-    , m_channel_type(type)
-    , m_io_group(io_group)
-    , m_parent_controller(controller)
+UNMAP_AFTER_INIT void IDEChannel::initialize()
 {
     disable_irq();
-
-    // FIXME: The device may not be capable of DMA.
-
     dbgln_if(PATA_DEBUG, "IDEChannel: {} IO base: {}", channel_type_string(), m_io_group.io_base());
     dbgln_if(PATA_DEBUG, "IDEChannel: {} control base: {}", channel_type_string(), m_io_group.control_base());
     if (m_io_group.bus_master_base().has_value())
@@ -83,6 +81,24 @@ UNMAP_AFTER_INIT IDEChannel::IDEChannel(const IDEController& controller, IOAddre
     clear_pending_interrupts();
 }
 
+UNMAP_AFTER_INIT IDEChannel::IDEChannel(const IDEController& controller, u8 irq, IOAddressGroup io_group, ChannelType type)
+    : IRQHandler(irq)
+    , m_channel_type(type)
+    , m_io_group(io_group)
+    , m_parent_controller(controller)
+{
+    initialize();
+}
+
+UNMAP_AFTER_INIT IDEChannel::IDEChannel(const IDEController& controller, IOAddressGroup io_group, ChannelType type)
+    : IRQHandler(type == ChannelType::Primary ? PATA_PRIMARY_IRQ : PATA_SECONDARY_IRQ)
+    , m_channel_type(type)
+    , m_io_group(io_group)
+    , m_parent_controller(controller)
+{
+    initialize();
+}
+
 void IDEChannel::clear_pending_interrupts() const
 {
     m_io_group.io_base().offset(ATA_REG_STATUS).in<u8>();