arm9 MI_dma_gxcommand, remove arm9_itcm.s

6 files changed, 206 insertions, 300 deletions

diff --git a/arm9/arm9.lcf b/arm9/arm9.lcf
index f6a8be67..a23d6184 100644
--- a/arm9/arm9.lcf
+++ b/arm9/arm9.lcf
@@ -972,7 +972,7 @@ SECTIONS {
 		OS_irqHandler.o (.itcm)
 		OS_reset.o (.itcm)
 		MI_dma.o (.itcm)
-		arm9_itcm.o (.text)
+		MI_dma_gxcommand.o (.itcm)
 		. = ALIGN(32);
 		SDK_AUTOLOAD.ITCM.END = .;
 		SDK_AUTOLOAD.ITCM.SIZE = SDK_AUTOLOAD.ITCM.END - SDK_AUTOLOAD.ITCM.START;
diff --git a/arm9/asm/MI_dma_gxcommand.s b/arm9/asm/MI_dma_gxcommand.s
deleted file mode 100644
index fdf51ac3..00000000
--- a/arm9/asm/MI_dma_gxcommand.s
+++ /dev/null
@@ -1,246 +0,0 @@
-    .include "asm/macros.inc"
-    .include "global.inc"
-
-	.section .bss
-
-	.global UNK_021D37FC
-UNK_021D37FC: ; 0x021D37FC
-	.space 0x20
-
-    .text
-
-	arm_func_start MIi_DMAFastCallback
-MIi_DMAFastCallback: ; 0x020CDE78
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	ldr r0, _020CDEB4 ; =UNK_021D37FC
-	mov r2, #0x0
-	ldr r1, [r0, #0x10]
-	str r2, [r0, #0x0]
-	cmp r1, #0x0
-	addeq sp, sp, #0x4
-	ldr r0, [r0, #0x14]
-	ldmeqia sp!, {lr}
-	bxeq lr
-	blx r1
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-	.balign 4
-_020CDEB4: .word UNK_021D37FC
-
-	arm_func_start MI_SendGXCommandAsyncFast
-MI_SendGXCommandAsyncFast: ; 0x020CDEB8
-	stmdb sp!, {r4-r6,lr}
-	movs r4, r2
-	mov r6, r0
-	mov r5, r1
-	bne _020CDEE8
-	cmp r3, #0x0
-	ldmeqia sp!, {r4-r6,lr}
-	bxeq lr
-	ldr r0, [sp, #0x10]
-	blx r3
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-_020CDEE8:
-	ldr r2, _020CDF6C ; =UNK_021D37FC
-	ldr r0, [r2, #0x0]
-	cmp r0, #0x0
-	bne _020CDEE8
-	ldr r12, [sp, #0x10]
-	mov lr, #0x1
-	mov r0, r6
-	mov r1, #0x38000000
-	str lr, [r2, #0x0]
-	str r6, [r2, #0x4]
-	str r3, [r2, #0x10]
-	str r12, [r2, #0x14]
-	bl MIi_CheckAnotherAutoDMA
-	mov r0, r6
-	mov r1, r5
-	mov r2, r4
-	mov r3, #0x0
-	bl MIi_CheckDma0SourceAddress
-	mov r0, r6
-	bl MI_WaitDma
-	mov r0, r6
-	ldr r1, _020CDF70 ; =MIi_DMAFastCallback
-	mov r2, #0x0
-	bl OSi_EnterDmaCallback
-	mov r0, r6
-	mov r1, r5
-	ldr r2, _020CDF74 ; =0x04000400
-	mov r3, #0x3c00000
-	rsb r3, r3, #0x0
-	orr r3, r3, r4, lsr #0x2
-	bl MIi_DmaSetParams
-	ldmia sp!, {r4-r6,lr}
-	bx lr
-	.balign 4
-_020CDF6C: .word UNK_021D37FC
-_020CDF70: .word MIi_DMAFastCallback
-_020CDF74: .word 0x04000400
-
-	arm_func_start MIi_DMACallback
-MIi_DMACallback: ; 0x020CDF78
-	stmdb sp!, {lr}
-	sub sp, sp, #0x4
-	mov r0, #0x200000
-	bl OS_DisableIrqMask
-	ldr r2, _020CDFE4 ; =0x04000600
-	ldr r0, _020CDFE8 ; =UNK_021D37FC
-	ldr r1, [r2, #0x0]
-	ldr r3, [r0, #0x18]
-	bic r1, r1, #0xc0000000
-	orr r1, r1, r3, lsl #0x1e
-	str r1, [r2, #0x0]
-	ldr r1, [r0, #0x1c]
-	mov r0, #0x200000
-	bl OS_SetIrqFunction
-	ldr r0, _020CDFE8 ; =UNK_021D37FC
-	mov r2, #0x0
-	ldr r1, [r0, #0x10]
-	str r2, [r0, #0x0]
-	cmp r1, #0x0
-	addeq sp, sp, #0x4
-	ldr r0, [r0, #0x14]
-	ldmeqia sp!, {lr}
-	bxeq lr
-	blx r1
-	add sp, sp, #0x4
-	ldmia sp!, {lr}
-	bx lr
-	.balign 4
-_020CDFE4: .word 0x04000600
-_020CDFE8: .word UNK_021D37FC
-
-	arm_func_start MIi_FIFOCallback
-MIi_FIFOCallback: ; 0x020CDFEC
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x4
-	ldr r0, _020CE0A4 ; =UNK_021D37FC
-	ldr r4, [r0, #0xc]
-	cmp r4, #0x0
-	addeq sp, sp, #0x4
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	ldr r0, _020CE0A4 ; =UNK_021D37FC
-	cmp r4, #0x1d8
-	ldr r5, [r0, #0x8]
-	movcs r4, #0x1d8
-	ldr r2, [r0, #0xc]
-	add r1, r5, r4
-	subs r2, r2, r4
-	str r2, [r0, #0xc]
-	str r1, [r0, #0x8]
-	bne _020CE078
-	ldr r0, [r0, #0x4]
-	ldr r1, _020CE0A8 ; =MIi_DMACallback
-	mov r2, #0x0
-	bl OSi_EnterDmaCallback
-	mov r0, #0x3bc00000
-	rsb r3, r0, #0x0
-	ldr r1, _020CE0A4 ; =UNK_021D37FC
-	ldr r2, _020CE0AC ; =0x04000400
-	ldr r0, [r1, #0x4]
-	mov r1, r5
-	orr r3, r3, r4, lsr #0x2
-	bl MIi_DmaSetParams
-	mov r0, #0x200000
-	bl OS_ResetRequestIrqMask
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-_020CE078:
-	ldr r3, _020CE0B0 ; =0x84400000
-	ldr r0, [r0, #0x4]
-	ldr r2, _020CE0AC ; =0x04000400
-	mov r1, r5
-	orr r3, r3, r4, lsr #0x2
-	bl MIi_DmaSetParams
-	mov r0, #0x200000
-	bl OS_ResetRequestIrqMask
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-	.balign 4
-_020CE0A4: .word UNK_021D37FC
-_020CE0A8: .word MIi_DMACallback
-_020CE0AC: .word 0x04000400
-_020CE0B0: .word 0x84400000
-
-	arm_func_start MI_SendGXCommandAsync
-MI_SendGXCommandAsync: ; 0x020CE0B4
-	stmdb sp!, {r4-r5,lr}
-	sub sp, sp, #0x4
-	mov r4, r0
-	cmp r2, #0x0
-	bne _020CE0EC
-	cmp r3, #0x0
-	addeq sp, sp, #0x4
-	ldmeqia sp!, {r4-r5,lr}
-	bxeq lr
-	ldr r0, [sp, #0x10]
-	blx r3
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-_020CE0EC:
-	ldr r0, _020CE1BC ; =UNK_021D37FC
-	ldr r0, [r0, #0x0]
-	cmp r0, #0x0
-	bne _020CE0EC
-	ldr r5, _020CE1C0 ; =0x04000600
-_020CE100:
-	ldr r0, [r5, #0x0]
-	and r0, r0, #0x7000000
-	mov r0, r0, lsr #0x18
-	ands r0, r0, #0x2
-	beq _020CE100
-	ldr ip, _020CE1BC ; =UNK_021D37FC
-	ldr lr, [sp, #0x10]
-	str r3, [r12, #0x10]
-	mov r5, #0x1
-	mov r0, r4
-	mov r3, #0x0
-	str r5, [r12, #0x0]
-	str r4, [r12, #0x4]
-	str r1, [r12, #0x8]
-	str r2, [r12, #0xc]
-	str lr, [r12, #0x14]
-	bl MIi_CheckDma0SourceAddress
-	mov r0, r4
-	bl MI_WaitDma
-	bl OS_DisableInterrupts
-	ldr r1, _020CE1C0 ; =0x04000600
-	mov r4, r0
-	ldr r0, [r1, #0x0]
-	ldr r1, _020CE1BC ; =UNK_021D37FC
-	and r0, r0, #0xc0000000
-	mov r2, r0, lsr #0x1e
-	mov r0, #0x200000
-	str r2, [r1, #0x18]
-	bl OS_GetIrqFunction
-	ldr r1, _020CE1BC ; =UNK_021D37FC
-	ldr r2, _020CE1C0 ; =0x04000600
-	str r0, [r1, #0x1c]
-	ldr r0, [r2, #0x0]
-	ldr r1, _020CE1C4 ; =MIi_FIFOCallback
-	bic r0, r0, #0xc0000000
-	orr r3, r0, #0x40000000
-	mov r0, #0x200000
-	str r3, [r2, #0x0]
-	bl OS_SetIrqFunction
-	mov r0, #0x200000
-	bl OS_EnableIrqMask
-	bl MIi_FIFOCallback
-	mov r0, r4
-	bl OS_RestoreInterrupts
-	add sp, sp, #0x4
-	ldmia sp!, {r4-r5,lr}
-	bx lr
-	.balign 4
-_020CE1BC: .word UNK_021D37FC
-_020CE1C0: .word 0x04000600
-_020CE1C4: .word MIi_FIFOCallback
diff --git a/arm9/asm/arm9_itcm.s b/arm9/asm/arm9_itcm.s
deleted file mode 100644
index d89e6e77..00000000
--- a/arm9/asm/arm9_itcm.s
+++ /dev/null
@@ -1,53 +0,0 @@
-	.include "asm/macros.inc"
-	.include "global.inc"
-	.section .text
-
-	; MI
-	arm_func_start MI_SendGXCommand
-MI_SendGXCommand: ; 0x01FF8640
-	stmdb sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
-	sub	sp, sp, #4
-	movs	r8, r2
-	mov	sl, r0
-	mov	r9, r1
-	addeq	sp, sp, #4
-	ldmeqia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
-	bxeq	lr
-	mov	r3, #0
-	bl	MIi_CheckDma0SourceAddress
-	mov	r0, #3
-	mul	r1, sl, r0
-	ldr	r0, [pc, #104]	; 0x10b680
-	add	r1, r1, #2
-	add	r7, r0, r1, lsl #2
-_01FF867C:
-	ldr	r0, [r7]
-	ands	r0, r0, #-2147483648	; 0x80000000
-	bne	_01FF867C
-	cmp	r8, #0
-	beq	_01FF86C8
-	ldr	fp, [pc, #76]	; 0x10b684
-	mov	r5, #472	; 0x1d8
-	ldr	r4, [pc, #72]	; 0x10b688
-_01FF869C:
-	cmp	r8, #472	; 0x1d8
-	movhi	r6, r5
-	movls	r6, r8
-	mov	r0, sl
-	mov	r1, r9
-	mov	r2, fp
-	orr	r3, r4, r6, lsr #2
-	bl	MIi_DmaSetParams
-	subs	r8, r8, r6
-	add	r9, r9, r6
-	bne	_01FF869C
-_01FF86C8:
-	ldr	r0, [r7]
-	ands	r0, r0, #-2147483648	; 0x80000000
-	bne	_01FF86C8
-	add	sp, sp, #4
-	ldmia sp!,	{r4, r5, r6, r7, r8, r9, sl, fp, lr}
-	bx	lr
-_01FF86E0:	.word 0x040000B0
-_01FF86E4:	.word 0x04000400
-_01FF86E8:	.word 0x84400000
diff --git a/arm9/lib/include/GX_g3x.h b/arm9/lib/include/GX_g3x.h
index 4bd55831..a0512b28 100644
--- a/arm9/lib/include/GX_g3x.h
+++ b/arm9/lib/include/GX_g3x.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_GX_G3X_H
 #define GUARD_GX_G3X_H
 
+#include "fx.h"
+
 void GXi_NopClearFifo128_(void *reg);
 void G3X_Init();
 void G3X_ResetMtxStack();
@@ -66,4 +68,17 @@ typedef enum
 }
 GXFifoStat;
 
+static inline void G3X_SetFifoIntrCond(GXFifoIntrCond cond)
+{
+    reg_G3X_GXSTAT = ((reg_G3X_GXSTAT & ~0xc0000000) |
+                      (cond << 30));
+}
+
+static inline GXFifoStat G3X_GetCommandFifoStatus(void)
+{
+    return (GXFifoStat)((reg_G3X_GXSTAT & (0x01000000 |
+                                           0x02000000 |
+                                           0x04000000)) >> 24);
+}
+
 #endif //GUARD_GX_G3X_H
diff --git a/arm9/lib/include/MI_dma_gxcommand.h b/arm9/lib/include/MI_dma_gxcommand.h
new file mode 100644
index 00000000..29aa9c72
--- /dev/null
+++ b/arm9/lib/include/MI_dma_gxcommand.h
@@ -0,0 +1,37 @@
+#ifndef POKEDIAMOND_MI_DMA_GXCOMMAND_H
+#define POKEDIAMOND_MI_DMA_GXCOMMAND_H
+
+#include "consts.h"
+#include "MI_dma.h"
+#include "GX_g3x.h"
+
+#define MIi_GX_LENGTH_ONCE       (118 * sizeof(u32))
+#define REG_GXFIFO_ADDR          0x4000400
+#define MI_CNT_SEND32(size)      (0x84400000 | (size/4))
+#define MI_CNT_SEND32_IF(size)   (0xc4400000 | (size/4))
+#define MI_CNT_GXCOPY_IF(size)   (0xfc400000 | (size/4))
+
+#define OS_IE_GXFIFO             0x200000
+
+typedef struct
+{
+    volatile BOOL isBusy;
+
+    u32 dmaNo;
+    u32 src;
+    u32 length;
+    MIDmaCallback callback;
+    void *arg;
+
+    GXFifoIntrCond fifoCond;
+    void (*fifoFunc) (void);
+} MIiGXDmaParams;
+
+void MI_SendGXCommand(u32 dmaNo, const void *src, u32 commandLength);
+void MI_SendGXCommandAsync(u32 dmaNo, const void *src, u32 commandLength, MIDmaCallback callback, void *arg);
+static void MIi_FIFOCallback(void);
+static void MIi_DMACallback(void *);
+void MI_SendGXCommandAsyncFast(u32 dmaNo, const void *src, u32 commandLength, MIDmaCallback callback, void *arg);
+static void MIi_DMAFastCallback(void *);
+
+#endif //POKEDIAMOND_MI_DMA_GXCOMMAND_H
diff --git a/arm9/lib/src/MI_dma_gxcommand.c b/arm9/lib/src/MI_dma_gxcommand.c
new file mode 100644
index 00000000..32f98f60
--- /dev/null
+++ b/arm9/lib/src/MI_dma_gxcommand.c
@@ -0,0 +1,153 @@
+#include "MI_dma_gxcommand.h"
+#include "function_target.h"
+#include "OS_interrupt.h"
+#include "OS_reset.h"
+#include "sections.h"
+
+static MIiGXDmaParams MIi_GXDmaParams = { FALSE };
+
+#pragma section ITCM begin
+ARM_FUNC void MI_SendGXCommand(u32 dmaNo, const void *src, u32 commandLength)
+{
+    vu32 *dmaCntp;
+    u32 leftLength = commandLength;
+    u32 currentSrc = (u32)src;
+    if (!leftLength)
+    {
+        return;
+    }
+
+    MIi_CheckDma0SourceAddress(dmaNo, (u32)src, commandLength, DMA_SRC_INC);
+
+    do
+    {
+        dmaCntp = &((vu32 *)REG_ADDR_DMA0SAD)[dmaNo * 3 + 2];
+        while (*dmaCntp & 0x80000000) {}
+    } while(0);
+
+    while (leftLength > 0)
+    {
+        u32 length = (leftLength > MIi_GX_LENGTH_ONCE) ? MIi_GX_LENGTH_ONCE : leftLength;
+        MIi_DmaSetParams(dmaNo, currentSrc, (u32)REG_GXFIFO_ADDR, MI_CNT_SEND32(length));
+        leftLength -= length;
+        currentSrc += length;
+    }
+
+    do
+    {
+        while (*dmaCntp & 0x80000000) {}
+    } while(0);
+}
+#pragma section ITCM end
+
+ARM_FUNC void MI_SendGXCommandAsync(u32 dmaNo, const void *src, u32 commandLength, MIDmaCallback callback, void *arg)
+{
+    vu32 *dmaCntp;
+    u32 leftLength = commandLength;
+    u32 currentSrc = (u32)src;
+
+    if (!commandLength)
+    {
+        MIi_CallCallback(callback, arg);
+        return;
+    }
+
+    while (MIi_GXDmaParams.isBusy) {}
+
+    while (!(G3X_GetCommandFifoStatus() & GX_FIFOSTAT_UNDERHALF)) {}
+
+    MIi_GXDmaParams.isBusy = TRUE;
+    MIi_GXDmaParams.dmaNo = dmaNo;
+    MIi_GXDmaParams.src = (u32)src;
+    MIi_GXDmaParams.length = commandLength;
+    MIi_GXDmaParams.callback = callback;
+    MIi_GXDmaParams.arg = arg;
+
+    MIi_CheckDma0SourceAddress(dmaNo, (u32)src, commandLength, DMA_SRC_INC);
+
+    MI_WaitDma(dmaNo);
+    {
+        OSIntrMode lastIntrMode = OS_DisableInterrupts();
+
+        MIi_GXDmaParams.fifoCond = (GXFifoIntrCond)((reg_G3X_GXSTAT & 0xc0000000) >> 30);
+        MIi_GXDmaParams.fifoFunc = OS_GetIrqFunction(OS_IE_GXFIFO);
+
+        G3X_SetFifoIntrCond(GX_FIFOINTR_COND_UNDERHALF);
+        OS_SetIrqFunction(OS_IE_GXFIFO, MIi_FIFOCallback);
+        (void)OS_EnableIrqMask(OS_IE_GXFIFO);
+
+        MIi_FIFOCallback();
+
+        (void)OS_RestoreInterrupts(lastIntrMode);
+    }
+}
+
+ARM_FUNC static void MIi_FIFOCallback(void)
+{
+    if (!MIi_GXDmaParams.length)
+    {
+        return;
+    }
+
+    u32 length = (MIi_GXDmaParams.length >= MIi_GX_LENGTH_ONCE) ? MIi_GX_LENGTH_ONCE : MIi_GXDmaParams.length;
+    u32 src = MIi_GXDmaParams.src;
+
+    MIi_GXDmaParams.length -= length;
+    MIi_GXDmaParams.src += length;
+
+    if (!MIi_GXDmaParams.length)
+    {
+        OSi_EnterDmaCallback(MIi_GXDmaParams.dmaNo, MIi_DMACallback, NULL);
+        MIi_DmaSetParams(MIi_GXDmaParams.dmaNo, src, (u32)REG_GXFIFO_ADDR, MI_CNT_SEND32_IF(length));
+        (void)OS_ResetRequestIrqMask(OS_IE_GXFIFO);
+    }
+    else
+    {
+        MIi_DmaSetParams(MIi_GXDmaParams.dmaNo, src, (u32)REG_GXFIFO_ADDR, MI_CNT_SEND32(length));
+        (void)OS_ResetRequestIrqMask(OS_IE_GXFIFO);
+    }
+}
+
+ARM_FUNC static void MIi_DMACallback(void *)
+{
+    (void)OS_DisableIrqMask(OS_IE_GXFIFO);
+
+    G3X_SetFifoIntrCond(MIi_GXDmaParams.fifoCond);
+    OS_SetIrqFunction(OS_IE_GXFIFO, MIi_GXDmaParams.fifoFunc);
+
+    MIi_GXDmaParams.isBusy = FALSE;
+
+    MIi_CallCallback(MIi_GXDmaParams.callback, MIi_GXDmaParams.arg);
+}
+
+ARM_FUNC void MI_SendGXCommandAsyncFast(u32 dmaNo, const void *src, u32 commandLength, MIDmaCallback callback, void *arg)
+{
+    if (!commandLength)
+    {
+        MIi_CallCallback(callback, arg);
+        return;
+    }
+
+    while (MIi_GXDmaParams.isBusy) {}
+
+    MIi_GXDmaParams.isBusy = TRUE;
+    MIi_GXDmaParams.dmaNo = dmaNo;
+    MIi_GXDmaParams.callback = callback;
+    MIi_GXDmaParams.arg = arg;
+
+    MIi_CheckAnotherAutoDMA(dmaNo, 0x38000000);
+
+    MIi_CheckDma0SourceAddress(dmaNo, (u32)src, commandLength, DMA_SRC_INC);
+
+    MI_WaitDma(dmaNo);
+
+    OSi_EnterDmaCallback(dmaNo, MIi_DMAFastCallback, NULL);
+    MIi_DmaSetParams(dmaNo, (u32)src, (u32)REG_GXFIFO_ADDR, MI_CNT_GXCOPY_IF(commandLength));
+}
+
+ARM_FUNC static void MIi_DMAFastCallback(void *)
+{
+    MIi_GXDmaParams.isBusy = FALSE;
+
+    MIi_CallCallback(MIi_GXDmaParams.callback, MIi_GXDmaParams.arg);
+}