ahci reading

src/driver/bus/PCI.pas

@@ -463,9 +463,9 @@ begin
     cmd := cmd or PCI_COMMAND_BUS_MASTER;
     cmd := cmd or (3 shl 1);
 
-    //enable interrupts, remove disable interrupt bit
+    //enable interrupts, remove disable interrupt bit maybe
     cmd := cmd and not PCI_COMMAND_INT_DISABLE;
-    cmd := cmd and not (1 shl 9);
+    // cmd := cmd and not (1 shl 9);
 
     outl(PCI_CONFIG_ADDRESS_PORT, addr);
     outl(PCI_CONFIG_DATA_PORT, cmd);

src/driver/include/drivertypes.pas

@@ -38,6 +38,12 @@ const
     PCI_COMMAND_INT_DISABLE = $0400;
     PCI_COMMAND_SERR_ENABLE = $8000;
 
+    PCI_CAP_ID_MSI           = $05;
+
+    // Bits in the MSI Control register (16-bit):
+    MSI_CONTROL_ENABLE       = 1 shl 0;  // Bit 0
+    MSI_CONTROL_64BIT        = 1 shl 7;  // Bit 7
+    MSI_CONTROL_PVMASK       = 1 shl 8;  // Bit 8 (optional: per-vector masking)
 type
 
     PPCI_Device = ^TPCI_Device;

src/driver/storage/AHCI/AHCITypes.pas

@@ -269,7 +269,7 @@ type
         pci_device : PPCI_Device;
         mio: PHBA_Memory;
         ata_info : TIdentResponse;
-        devices : PDList;
+        devices : array[0..31] of TAHCI_Device;
     end;
 
     PAHCI_Controller = ^TAHCI_Controller;