mirror of
https://github.com/d0k3/GodMode9.git
synced 2025-06-26 05:32:47 +00:00
8a4597635d
Sanitized I2C Reorganized the memory layout - Moved GM9 to ARM9 RAM - Increased RAMdisk size to 88MiB
142 lines
2.9 KiB
C
142 lines
2.9 KiB
C
/*
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Written by Wolfvak, specially sublicensed under the GPLv2
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Read LICENSE for more details
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*/
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#pragma once
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#include <types.h>
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#ifdef ARM9
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#define PXI_BASE (0x10008000)
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#define IRQ_PXI_SYNC (12)
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#else
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#define PXI_BASE (0x10163000)
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#define IRQ_PXI_SYNC (80)
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#endif
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enum {
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PXI_NONE = 0,
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PXI_READY,
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PXI_BUSY,
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PXI_SCREENINIT,
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PXI_BRIGHTNESS
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};
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#define PXI_MAXBUFLEN (2048)
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#define PXI_FIFO_LEN (16)
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#define PXI_SYNC_RECV ((vu8*)(PXI_BASE + 0x00))
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#define PXI_SYNC_SEND ((vu8*)(PXI_BASE + 0x01))
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#define PXI_SYNC_IRQ ((vu8*)(PXI_BASE + 0x03))
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#define PXI_SYNC ((vu32*)(PXI_BASE + 0x00))
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#define PXI_CNT ((vu16*)(PXI_BASE + 0x04))
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#define PXI_SEND ((vu32*)(PXI_BASE + 0x08))
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#define PXI_RECV ((vu32*)(PXI_BASE + 0x0C))
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#define PXI_CNT_SEND_FIFO_EMPTY (BIT(0))
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#define PXI_CNT_SEND_FIFO_FULL (BIT(1))
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#define PXI_CNT_SEND_FIFO_EMPTY_IRQ (BIT(2))
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#define PXI_CNT_SEND_FIFO_FLUSH (BIT(3))
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#define PXI_CNT_RECV_FIFO_EMPTY (BIT(8))
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#define PXI_CNT_RECV_FIFO_FULL (BIT(9))
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#define PXI_CNT_RECV_FIFO_NEMPTY_IRQ (BIT(10))
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#define PXI_CNT_ERROR_ACK (BIT(14))
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#define PXI_CNT_ENABLE_FIFO (BIT(15))
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#define PXI_SYNC_TRIGGER_MPCORE (BIT(5))
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#define PXI_SYNC_TRIGGER_OLDARM (BIT(6))
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#define PXI_SYNC_ENABLE_IRQ (BIT(7))
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static inline void PXI_SetRemote(u8 msg)
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{
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*PXI_SYNC_SEND = msg;
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}
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static inline u8 PXI_GetRemote(void)
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{
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return *PXI_SYNC_RECV;
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}
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static inline void PXI_WaitRemote(u8 msg)
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{
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while(*PXI_SYNC_RECV != msg);
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}
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static inline void PXI_EnableIRQ(void)
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{
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*PXI_SYNC_IRQ = PXI_SYNC_ENABLE_IRQ;
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}
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static inline void PXI_DisableIRQ(void)
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{
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*PXI_SYNC_IRQ = 0;
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}
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static inline void PXI_Sync(void)
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{
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#ifdef ARM9
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*PXI_SYNC_IRQ |= PXI_SYNC_TRIGGER_MPCORE;
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#else
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*PXI_SYNC_IRQ |= PXI_SYNC_TRIGGER_OLDARM;
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#endif
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}
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static void PXI_Reset(void)
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{
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*PXI_SYNC = 0;
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*PXI_CNT = PXI_CNT_SEND_FIFO_FLUSH;
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for (int i=0; i<16; i++) {
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*PXI_RECV;
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}
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*PXI_CNT = 0;
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*PXI_CNT = PXI_CNT_ENABLE_FIFO;
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return;
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}
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static void PXI_Send(u32 w)
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{
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while(*PXI_CNT & PXI_CNT_SEND_FIFO_FULL);
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do {
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*PXI_SEND = w;
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} while(*PXI_CNT & PXI_CNT_ERROR_ACK);
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return;
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}
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static u32 PXI_Recv(void)
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{
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u32 ret;
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while(*PXI_CNT & PXI_CNT_RECV_FIFO_EMPTY);
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do {
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ret = *PXI_RECV;
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} while(*PXI_CNT & PXI_CNT_ERROR_ACK);
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return ret;
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}
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static void PXI_SendArray(const u32 *w, u32 c)
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{
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if (c>PXI_FIFO_LEN) c=PXI_FIFO_LEN;
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for (u32 i=0; i<c; i++) {
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PXI_Send(w[i]);
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}
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return;
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}
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static void PXI_RecvArray(u32 *w, u32 c)
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{
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if (c>PXI_FIFO_LEN) c=PXI_FIFO_LEN;
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for (u32 i=0; i<c; i++) {
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w[i] = PXI_Recv();
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}
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return;
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}
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static void PXI_DoCMD(u8 cmd, u32 *args, u32 argc)
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{
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PXI_WaitRemote(PXI_READY);
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PXI_SendArray(args, argc);
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PXI_SetRemote(cmd);
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PXI_Sync();
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PXI_WaitRemote(PXI_BUSY);
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return;
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}
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