From 09450f145572164ffc17dfa69f9436acc31f77b5 Mon Sep 17 00:00:00 2001
From: Baptiste Wicht <baptiste.wicht@gmail.com>
Date: Sat, 23 Jul 2016 17:50:30 +0200
Subject: [PATCH] Finish the OSL

---
 kernel/src/thor_acpi.cpp | 51 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/kernel/src/thor_acpi.cpp b/kernel/src/thor_acpi.cpp
index 048e1e9a..620ff538 100644
--- a/kernel/src/thor_acpi.cpp
+++ b/kernel/src/thor_acpi.cpp
@@ -19,6 +19,7 @@
 #include "kernel_utils.hpp"
 #include "interrupts.hpp"
 #include "timer.hpp"
+#include "pci.hpp"
 
 #include "mutex.hpp"
 #include "semaphore.hpp"
@@ -516,6 +517,56 @@ ACPI_STATUS AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address, UINT64 value, UINT3
     return rv;
 }
 
+ACPI_STATUS AcpiOsReadPciConfiguration(ACPI_PCI_ID* pci_id, UINT32 Register, UINT64* value, UINT32 width){
+    if (pci_id->Bus >= 256 || pci_id->Device >= 32 || pci_id->Function >= 8){
+        return AE_BAD_PARAMETER;
+    }
+
+    switch (width) {
+        case 8:
+            *((uint8_t*) value) = pci::read_config_byte(pci_id->Bus, pci_id->Device, pci_id->Function, Register);
+            break;
+
+        case 16:
+            *((uint16_t*) value) = pci::read_config_word(pci_id->Bus, pci_id->Device, pci_id->Function, Register);
+            break;
+
+        case 32:
+            *((uint32_t*) value) = pci::read_config_dword(pci_id->Bus, pci_id->Device, pci_id->Function, Register);
+            break;
+
+        default:
+            return AE_BAD_PARAMETER;
+    }
+
+    return AE_OK;
+}
+
+ACPI_STATUS AcpiOsWritePciConfiguration(ACPI_PCI_ID* pci_id, UINT32 Register, ACPI_INTEGER value, UINT32 width){
+    if (pci_id->Bus >= 256 || pci_id->Device >= 32 || pci_id->Function >= 8){
+        return AE_BAD_PARAMETER;
+    }
+
+    switch (width) {
+        case 8:
+            pci::write_config_byte(pci_id->Bus, pci_id->Device, pci_id->Function, Register, value);
+            break;
+
+        case 16:
+            pci::write_config_word(pci_id->Bus, pci_id->Device, pci_id->Function, Register, value);
+            break;
+
+        case 32:
+            pci::write_config_dword(pci_id->Bus, pci_id->Device, pci_id->Function, Register, value);
+            break;
+
+        default:
+            return AE_BAD_PARAMETER;
+    }
+
+    return AE_OK;
+}
+
 // Interrupts
 
 struct acpi_interrupt_context {