From f1abb66f9a1be616a2a47cb41ee8776e4a2ec14b Mon Sep 17 00:00:00 2001
From: joevt <joevt@shaw.ca>
Date: Fri, 29 Mar 2024 20:47:25 -0700
Subject: [PATCH] atahd: Add STANDBY_IMMEDIATE.

---
 devices/common/ata/atadefs.h | 55 ++++++++++++++++++------------------
 devices/common/ata/atahd.cpp |  5 ++++
 2 files changed, 33 insertions(+), 27 deletions(-)

diff --git a/devices/common/ata/atadefs.h b/devices/common/ata/atadefs.h
index e7e49bb..af2a55b 100644
--- a/devices/common/ata/atadefs.h
+++ b/devices/common/ata/atadefs.h
@@ -117,33 +117,34 @@ enum ATA_CTRL : uint8_t {
 
 /* ATA commands. */
 enum ATA_Cmd : uint8_t {
-    NOP              = 0x00,
-    ATAPI_SOFT_RESET = 0x08,
-    RECALIBRATE      = 0x10,
-    READ_SECTOR      = 0x20,
-    READ_SECTOR_NR   = 0x21,
-    READ_LONG        = 0x22,
-    READ_SECTOR_EXT  = 0x24,
-    WRITE_SECTOR     = 0x30,
-    WRITE_SECTOR_NR  = 0x31,
-    WRITE_LONG       = 0x32,
-    READ_VERIFY      = 0x40,
-    FORMAT_TRACKS    = 0x50,
-    IDE_SEEK         = 0x70,
-    DIAGNOSTICS      = 0x90,
-    INIT_DEV_PARAM   = 0x91,
-    ATAPI_PACKET     = 0xA0,
-    ATAPI_IDFY_DEV   = 0xA1,
-    ATAPI_SERVICE    = 0xA2,
-    READ_MULTIPLE    = 0xC4,
-    WRITE_MULTIPLE   = 0xC5,
-    READ_DMA         = 0xC8,
-    WRITE_DMA        = 0xCA,
-    FLUSH_CACHE      = 0xE7, // ATA-5
-    WRITE_BUFFER_DMA = 0xE9,
-    READ_BUFFER_DMA  = 0xEB,
-    IDENTIFY_DEVICE  = 0xEC,
-    SET_FEATURES     = 0xEF,
+    NOP                                  = 0x00,
+    ATAPI_SOFT_RESET                     = 0x08,
+    RECALIBRATE                          = 0x10,
+    READ_SECTOR                          = 0x20,
+    READ_SECTOR_NR                       = 0x21,
+    READ_LONG                            = 0x22,
+    READ_SECTOR_EXT                      = 0x24,
+    WRITE_SECTOR                         = 0x30,
+    WRITE_SECTOR_NR                      = 0x31,
+    WRITE_LONG                           = 0x32,
+    READ_VERIFY                          = 0x40,
+    FORMAT_TRACKS                        = 0x50,
+    IDE_SEEK                             = 0x70,
+    DIAGNOSTICS                          = 0x90,
+    INIT_DEV_PARAM                       = 0x91,
+    ATAPI_PACKET                         = 0xA0,
+    ATAPI_IDFY_DEV                       = 0xA1,
+    ATAPI_SERVICE                        = 0xA2,
+    READ_MULTIPLE                        = 0xC4,
+    WRITE_MULTIPLE                       = 0xC5,
+    READ_DMA                             = 0xC8,
+    WRITE_DMA                            = 0xCA,
+    STANDBY_IMMEDIATE_E0                 = 0xE0,
+    FLUSH_CACHE                          = 0xE7, // ATA-5
+    WRITE_BUFFER_DMA                     = 0xE9,
+    READ_BUFFER_DMA                      = 0xEB,
+    IDENTIFY_DEVICE                      = 0xEC,
+    SET_FEATURES                         = 0xEF,
 };
 
 }; // namespace ata_interface
diff --git a/devices/common/ata/atahd.cpp b/devices/common/ata/atahd.cpp
index 820a57d..4f9b1d2 100644
--- a/devices/common/ata/atahd.cpp
+++ b/devices/common/ata/atahd.cpp
@@ -164,6 +164,11 @@ int AtaHardDisk::perform_command() {
         this->r_status &= ~BSY;
         this->update_intrq(1);
         break;
+    case STANDBY_IMMEDIATE_E0:
+        LOG_F(INFO, "%s: STANDBY_IMMEDIATE_E0", this->name.c_str());
+        this->r_status &= ~BSY;
+        this->update_intrq(1);
+        break;
     default:
         LOG_F(ERROR, "%s: unknown ATA command 0x%x", this->name.c_str(), this->r_command);
         this->r_status &= ~BSY;