From ff3f661bb54dcb31e2533967aa231d827d2be4b7 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Thu, 28 Oct 2021 18:47:13 +0200
Subject: DLDI/SD folder-sync apparatus (#1251)

guess we can finally have DLDI that isn't obtuse
---
 src/fatfs/diskio.c | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

(limited to 'src/fatfs/diskio.c')

diff --git a/src/fatfs/diskio.c b/src/fatfs/diskio.c
index 225d9bf..9ed4a76 100644
--- a/src/fatfs/diskio.c
+++ b/src/fatfs/diskio.c
@@ -13,15 +13,17 @@
 
 static ff_disk_read_cb ReadCb;
 static ff_disk_write_cb WriteCb;
+static LBA_t SectorCount;
 static DSTATUS Status = STA_NOINIT | STA_NODISK;
 
 
-void ff_disk_open(ff_disk_read_cb readcb, ff_disk_write_cb writecb)
+void ff_disk_open(ff_disk_read_cb readcb, ff_disk_write_cb writecb, LBA_t seccnt)
 {
     if (!readcb) return;
 
     ReadCb = readcb;
     WriteCb = writecb;
+    SectorCount = seccnt;
 
     Status &= ~STA_NODISK;
     if (!writecb) Status |= STA_PROTECT;
@@ -32,6 +34,7 @@ void ff_disk_close()
 {
     ReadCb = (void*)0;
     WriteCb = (void*)0;
+    SectorCount = 0;
 
     Status &= ~STA_PROTECT;
     Status |= STA_NODISK;
@@ -123,12 +126,28 @@ DRESULT disk_ioctl (
 {
     switch (cmd)
     {
-    case 0: // sync
+    case CTRL_SYNC:
         // TODO: fflush?
         return RES_OK;
+
+    case GET_SECTOR_COUNT:
+        *(LBA_t*)buff = SectorCount;
+        return RES_OK;
+
+    case GET_SECTOR_SIZE:
+        *(WORD*)buff = 0x200;
+        return RES_OK;
+
+    case GET_BLOCK_SIZE:
+        *(DWORD*)buff = 1;
+        return RES_OK;
+
+    case CTRL_TRIM:
+        // TODO??
+        return RES_OK;
     }
 
-	//printf("disk_ioctl(%02X, %02X, %p)\n", pdrv, cmd, buff);
+	//printf("FatFS: unknown disk_ioctl(%02X, %02X, %p)\n", pdrv, cmd, buff);
 	return RES_PARERR;
 }
 
-- 
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