From 9f9d68b00dda30374ce45c6e3250eedaaca63c3a Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 8 May 2025 00:43:40 -0400
Subject: kernel: ahci: Add basic AHCI constants

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/dev/ic/ahcivar.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/sys/include/dev/ic/ahcivar.h b/sys/include/dev/ic/ahcivar.h
index b28a880..1d8fbe9 100644
--- a/sys/include/dev/ic/ahcivar.h
+++ b/sys/include/dev/ic/ahcivar.h
@@ -144,4 +144,19 @@ struct ahci_fis_h2d {
 
 #define AHCI_TIMEOUT 500    /* In ms */
 
+/* AHCI size constants */
+#define AHCI_FIS_SIZE 256
+#define AHCI_CMDTAB_SIZE 256
+#define AHCI_CMDENTRY_SIZE 32
+
+/* AHCI FIS types */
+#define FIS_TYPE_H2D 0x27
+#define FIS_TYPE_D2H 0x34
+
+/* ATA commands */
+#define ATA_CMD_NOP         0x00
+#define ATA_CMD_IDENTIFY    0xEC
+#define ATA_CMD_READ_DMA    0x25
+#define ATA_CMD_WRITE_DMA   0x35
+
 #endif  /* !_IC_AHCIVAR_H_ */
-- 
cgit v1.2.3