feat: AHCI probing

[lunaix-os.git] / lunaix-os / includes / hal / ahci.h

diff --git a/lunaix-os/includes/hal/ahci.h b/lunaix-os/includes/hal/ahci.h
index fc457ebf5c5267251b2fa42edc4166cc7b9bc0b9..438fa5cf9ef7cf707c0fe2a29e712c96038f147b 100644 (file)
--- a/lunaix-os/includes/hal/ahci.h
+++ b/lunaix-os/includes/hal/ahci.h
@@ -1,5 +1,49 @@
 #ifndef __LUNAIX_AHCI_H
 #define __LUNAIX_AHCI_H
-// TODO: AHCI Drivers
+
+/*
+ * Macro naming rule:
+ *      HBA_R[xxx]
+ *          HBA Register [xxx]
+ *          e.g. HBA_RPxCLB is Register PxCLB
+ *
+ * All registers offset are 0 based index of a DWORD array
+ */
+
+#define HBA_RCAP 0
+#define HBA_RGHC 1
+#define HBA_RIS 2
+#define HBA_RPI 3
+#define HBA_RVER 4
+
+#define HBA_RPBASE (0x40)
+#define HBA_RPxCLB 0
+#define HBA_RPxFB 2
+#define HBA_RPxIS 4
+#define HBA_RPxIE 5
+#define HBA_RPxCMD 6
+#define HBA_RPxTFD 8
+#define HBA_RPxSIG 9
+#define HBA_RPxSSTS 10
+#define HBA_RPxSCTL 11
+#define HBA_RPxSERR 12
+#define HBA_RPxSACT 13
+#define HBA_RPxCI 14
+#define HBA_RPxSNTF 15
+#define HBA_RPxFBS 16
+
+typedef unsigned int hba_reg_t;
+
+struct ahci_hba
+{
+    volatile hba_reg_t* base;
+    unsigned int ports_num;
+    unsigned int port_map;
+    unsigned int version;
+    hba_reg_t* ports[32];
+};
+
+void
+ahci_init();
 
 #endif /* __LUNAIX_AHCI_H */