From cd5737dba70c2c640f9b602401a2ffe86a20ab23 Mon Sep 17 00:00:00 2001
From: antifallobst <antifallobst@systemausfall.org>
Date: Mon, 29 May 2023 14:40:37 +0200
Subject: [PATCH] feature (drivers): started work on a generic driver interface
 / driver manager

---
 inc/drivers/driver.h | 62 ++++++++++++++++++++++++++++++++++++++++++++
 src/boot/kmain.c     |  3 +++
 src/drivers/driver.c | 50 +++++++++++++++++++++++++++++++++++
 3 files changed, 115 insertions(+)
 create mode 100644 inc/drivers/driver.h
 create mode 100644 src/drivers/driver.c

diff --git a/inc/drivers/driver.h b/inc/drivers/driver.h
new file mode 100644
index 0000000..b332952
--- /dev/null
+++ b/inc/drivers/driver.h
@@ -0,0 +1,62 @@
+// This file is part of noxos and licensed under the MIT open source license
+
+#ifndef NOXOS_DRIVER_H
+#define NOXOS_DRIVER_H
+
+#include <utils/stdtypes.h>
+#include <drivers/builtin/elf/elf.h>
+
+typedef enum {
+    DRIVER_TRANSPORT_PCI,
+    DRIVER_TRANSPORT_USB,
+    DRIVER_TRANSPORT_FS
+} __attribute__((packed)) driver_transport_protocol_E;
+
+typedef struct {
+    driver_transport_protocol_E transport_protocol:8;
+    uint16_t                    length;
+    uint8_t                     specific_config[];
+} __attribute__((packed)) driver_config_header_T;
+
+typedef struct {
+    uint16_t vendor_id;
+    uint16_t device_id;
+} __attribute__((packed)) driver_config_device_id_T;
+
+typedef struct {
+    bool                        enable_progif;
+    uint8_t                     class;
+    uint8_t                     subclass;
+    uint8_t                     progif;
+    uint16_t                    num_device_ids;
+    driver_config_device_id_T   device_ids;
+} __attribute__((packed)) driver_config_pci_T;
+
+typedef struct {
+    uint8_t                     min_version;
+    uint16_t                    num_device_ids;
+    driver_config_device_id_T   device_ids;
+} __attribute__((packed)) driver_config_usb_T;
+
+typedef struct {
+    uint8_t gpt_guid[16];
+    uint8_t mbr_type;
+} __attribute__((packed)) driver_config_fs_T;
+
+
+typedef struct {
+
+} driver_T;
+
+typedef struct {
+
+} driver_manager_T;
+
+void      driver_manager_init       ();
+driver_T* driver_register           (driver_config_header_T* config, elf_executable_T* executable);
+driver_T* driver_lookup_pci_device  (uint16_t vendor_id, uint16_t device_id);
+driver_T* driver_lookup_usb_device  (uint16_t vendor_id, uint16_t device_id);
+driver_T* driver_lookup_fs_gpt      (uint8_t guid[16]);
+driver_T* driver_lookup_fs_mbr      (uint8_t type);
+
+#endif //NOXOS_DRIVER_H
diff --git a/src/boot/kmain.c b/src/boot/kmain.c
index cacbf5d..33f1b6c 100644
--- a/src/boot/kmain.c
+++ b/src/boot/kmain.c
@@ -20,6 +20,7 @@
 #include "drivers/builtin/pci.h"
 #include "drivers/builtin/ps2/controller.h"
 #include "drivers/builtin/tty.h"
+#include "drivers/driver.h"
 #include "proc/scheduler.h"
 #include "modules/loader.h"
 
@@ -51,6 +52,8 @@ void kernel_init(boot_info_T* boot_info) {
 
     scheduler_init(boot_info);
 
+    driver_manager_init();
+
     acpi_init(boot_info);
 
     module_manager_init();
diff --git a/src/drivers/driver.c b/src/drivers/driver.c
new file mode 100644
index 0000000..40b0a46
--- /dev/null
+++ b/src/drivers/driver.c
@@ -0,0 +1,50 @@
+// This file is part of noxos and licensed under the MIT open source license
+
+#include <drivers/driver.h>
+#include <utils/logger.h>
+
+driver_manager_T g_driver_manager;
+
+void driver_manager_init() {
+
+}
+
+driver_T* driver_find_pci_device(uint16_t vendor_id, uint16_t device_id) {
+    log(LOG_WARNING, "driver manager -> driver lookup on disk is not implemented yet");
+    return NULL;
+}
+
+driver_T* driver_find_usb_device(uint16_t vendor_id, uint16_t device_id) {
+    log(LOG_WARNING, "driver manager -> driver lookup on disk is not implemented yet");
+    return NULL;
+}
+
+driver_T* driver_find_fs_gpt(uint8_t guid[16]) {
+    log(LOG_WARNING, "driver manager -> driver lookup on disk is not implemented yet");
+    return NULL;
+}
+
+driver_T* driver_find_fs_mbr(uint8_t type) {
+    log(LOG_WARNING, "driver manager -> driver lookup on disk is not implemented yet");
+    return NULL;
+}
+
+driver_T* driver_register(driver_config_header_T* config, elf_executable_T* executable) {
+    return NULL;
+}
+
+driver_T* driver_lookup_pci_device(uint16_t vendor_id, uint16_t device_id) {
+    return NULL;
+}
+
+driver_T* driver_lookup_usb_device(uint16_t vendor_id, uint16_t device_id) {
+    return NULL;
+}
+
+driver_T* driver_lookup_fs_gpt(uint8_t guid[16]) {
+    return NULL;
+}
+
+driver_T* driver_lookup_fs_mbr(uint8_t type) {
+    return NULL;
+}
\ No newline at end of file