feat: spec-compliant AHCI HBA initialization

[lunaix-os.git] / lunaix-os / hal / pci.c

diff --git a/lunaix-os/hal/pci.c b/lunaix-os/hal/pci.c
index 32299cdf8d2fa24d4302b9110585ac1b2f68a8e3..c3771d571e2a10885521d5ecb9922acda7b3efa4 100644 (file)
--- a/lunaix-os/hal/pci.c
+++ b/lunaix-os/hal/pci.c
@@ -1,3 +1,13 @@
+/**
+ * @file pci.c
+ * @author Lunaixsky (zelong56@gmail.com)
+ * @brief A software implementation of PCI Local Bus Specification Revision 3.0
+ * @version 0.1
+ * @date 2022-06-28
+ *
+ * @copyright Copyright (c) 2022
+ *
+ */
 #include <hal/acpi/acpi.h>
 #include <hal/apic.h>
 #include <hal/pci.h>
@@ -156,6 +166,7 @@ pci_bar_sizing(struct pci_device* dev, uint32_t* bar_out, uint32_t bar_num)
         sized = PCI_BAR_ADDR_MM(sized);
     }
     *bar_out = bar;
+    pci_write_cspace(dev->cspace_base, PCI_REG_BAR(bar_num), bar);
     return ~sized + 1;
 }