--- /dev/null
+/**
+ * @file dsp.h
+ * @brief DSP Service to access the DSP processor commands (sound)
+ *
+ * The DSP has access to the Linear memory region, and to the DSP memory region if allowed in the exheader.
+ */
+#pragma once
+#include <3ds/types.h>
+
+typedef enum {
+ DSP_INTERRUPT_PIPE = 2
+} DSP_InterruptType;
+
+
+typedef enum {
+ DSP_PIPE_INPUT = 0, ///< DSP to ARM
+ DSP_PIPE_OUTPUT = 1 ///< ARM to DSP
+} DSP_PipeDirection;
+
+/**
+ * @brief Initializes the dsp service.
+ *
+ * Call this before calling any DSP_* function.
+ * @note This will also unload any previously loaded DSP binary.
+ * It is done this way since you have to provide your binary when the 3DS leaves sleep mode anyway.
+ */
+Result dspInit(void);
+
+/**
+ * @brief Closes the dsp service.
+ * @note This will also unload the DSP binary.
+ */
+Result dspExit(void);
+
+///Checks if a headphone is inserted.
+Result DSP_GetHeadphoneStatus(bool* is_inserted);
+
+
+/**
+ * @brief Flushes the cache
+ * @param address Beginning of the memory range to flush, inside the Linear or DSP memory regions
+ * @param size Size of the memory range to flush
+ *
+ * Flushes the cache for the specified memory range and invalidates the cache
+ */
+Result DSP_FlushDataCache(u32 address, u32 size);
+
+/**
+ * @brief Invalidates the cache
+ * @param address Beginning of the memory range to invalidate, inside the Linear or DSP memory regions
+ * @param size Size of the memory range to flush
+ *
+ * Invalidates the cache for the specified memory range
+ */
+Result DSP_InvalidateDataCache(u32 address, u32 size);
+
+///Retrieves the handle of the DSP semaphore
+Result DSP_GetSemaphoreHandle(Handle* semaphore);
+
+///Sets the DSP hardware semaphore value
+Result DSP_SetSemaphore(u16 value);
+
+///Masks the DSP hardware semaphore value
+Result DSP_SetSemaphoreMask(u16 mask);
+
+/**
+ * @brief Loads a DSP binary and starts the DSP
+ * @param component The program file address in memory
+ * @param size The size of the program
+ * @param prog_mask DSP memory block related ? Default is 0xff.
+ * @param data_mask DSP memory block related ? Default is 0xff.
+ * @param is_loaded Indicates if the DSP was succesfully loaded.
+ *
+ * @note The binary must be signed (http://3dbrew.org/wiki/DSP_Binary)
+ * @note Seems to be called when the 3ds leaves the Sleep mode
+ */
+Result DSP_LoadComponent(u8 const* component,u32 size,u16 prog_mask,u16 data_mask,bool * is_loaded);
+
+///Stops the DSP by unloading the binary
+Result DSP_UnloadComponent(void);
+
+/**
+ * @brief Registers an event handle with the DSP through IPC
+ * @param interrut The type of interrupt that will trigger the event. Usual value is DSP_INTERRUPT_PIPE.
+ * @param channel The pipe channel. Usual value is 2
+ *
+ * @note It is possible that interrupt are inverted
+ */
+Result DSP_RegisterInterruptEvents(Handle handle,u32 interrupt,u32 channel);
+
+
+/**
+ * @param channel ?????? TODO usually 2
+ * @param buffer The buffer that will store the values read from the pipe
+ * @param length Length of the buffer
+ * @param length_read Number of bytes read by the command
+ */
+Result DSP_ReadPipeIfPossible(u32 channel, u8 const *buffer, u16 length, u16* length_read);
+
+/**
+ * @param channel ?????? TODO usually 2
+ * @param buffer The message to send to the DSP process
+ * @param length Length of the message
+ */
+Result DSP_WriteProcessPipe(u32 channel,u8 const* buffer,u32 length);
+
+
+///Converts a DSP memory to a virtual address usable by the process
+Result DSP_ConvertProcessAddressFromDspDram(u32 dsp_address, u32 *arm_address);
+
+/**
+ * @brief Reads a DSP register
+ * @param regNo Offset of the hardware register, base address is 0x1EC40000
+ */
+Result DSP_RecvData(u16 regNo, u16 * value);
+
+/**
+ * @brief Checks if you can read a DSP register
+ * @param regNo Offset of the hardware register, base address is 0x1EC40000
+ *
+ * @warning This call might hang if the data is not ready. See @ref DSP_SendDataIsEmpty.
+ */
+Result DSP_RecvDataIsReady(u16 regNo, bool * is_ready);
+
+/**
+ * @brief Writes to a DSP register
+ * @param regNo Offset of the hardware register, base address is 0x1EC40000
+ *
+ * @warning This call might hang if the SendData is not empty. See @ref DSP_SendDataIsEmpty.
+ */
+Result DSP_SendData(u16 regNo, u16 value);
+
+/**
+ * @brief Checks if you can write to a DSP register ?
+ * @param regNo Offset of the hardware register, base address is 0x1EC40000
+ */
+Result DSP_SendDataIsEmpty(u16 regNo, bool * is_empty);
--- /dev/null
+#include <3ds/types.h>
+#include <3ds/svc.h>
+#include <3ds/srv.h>
+#include <3ds/ipc.h>
+#include <3ds/services/dsp.h>
+
+Handle dspHandle = 0;
+
+
+Result dspInit(void)
+{
+ Result ret = 0;
+
+ if (dspHandle == 0)
+ {
+ ret = srvGetServiceHandle(&dspHandle, "dsp::DSP");
+ if (ret < 0) return ret;
+ }
+ if (ret < 0) return ret;
+ DSP_UnloadComponent();
+ return 0;
+}
+
+Result dspExit(void)
+{
+ Result ret = 0;
+//No need to call unload, it will be done automatically by closing the handle
+ if (dspHandle != 0)
+ {
+ ret = svcCloseHandle(dspHandle);
+ if (ret < 0) return ret;
+ dspHandle = 0;
+ }
+
+ return 0;
+}
+
+
+Result DSP_GetHeadphoneStatus(bool* is_inserted)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x001F,0,0);
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *is_inserted = cmdbuf[2] & 0xFF;
+ return cmdbuf[1];
+}
+
+
+Result DSP_FlushDataCache(u32 address, u32 size)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x13,2,2);
+ cmdbuf[1] = address;
+ cmdbuf[2] = size;
+ cmdbuf[3] = IPC_Desc_SharedHandles(1);
+ cmdbuf[4] = CUR_PROCESS_HANDLE;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+
+Result DSP_InvalidateDataCache(u32 address, u32 size)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x14,2,2);
+ cmdbuf[1] = address;
+ cmdbuf[2] = size;
+ cmdbuf[3] = IPC_Desc_SharedHandles(1);
+ cmdbuf[4] = CUR_PROCESS_HANDLE;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+
+
+Result DSP_SetSemaphore(u16 value)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x7,1,0);
+ cmdbuf[1] = value;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+
+
+Result DSP_SetSemaphoreMask(u16 mask)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x17,1,0);
+ cmdbuf[1] = mask;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+Result DSP_GetSemaphoreHandle(Handle* semaphore)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x16,0,0);
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *semaphore = cmdbuf[3];
+ return cmdbuf[1];
+}
+
+Result DSP_LoadComponent(u8 const* component,u32 size,u16 prog_mask,u16 data_mask,bool * is_loaded)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x11,3,2);
+ cmdbuf[1] = size;
+ cmdbuf[2] = prog_mask;
+ cmdbuf[3] = data_mask;
+ cmdbuf[4] = IPC_Desc_Buffer(size,IPC_BUFFER_R);
+ cmdbuf[5] = (u32) component;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *is_loaded = cmdbuf[2] & 0xFF;
+ return cmdbuf[1];
+}
+
+
+
+Result DSP_UnloadComponent(void)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x12,0,0);
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+Result DSP_RegisterInterruptEvents(Handle handle, u32 interrupt, u32 channel)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x15,2,2);
+ cmdbuf[1] = interrupt;
+ cmdbuf[2] = channel;
+ cmdbuf[3] = IPC_Desc_SharedHandles(1);
+ cmdbuf[4] = handle;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+
+Result DSP_ReadPipeIfPossibleEx(u32 channel,u32 unk1, u8 const *buffer, u16 length, u16* length_read)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x10,3,0);
+ cmdbuf[1] = channel;
+ cmdbuf[2] = unk1;
+ cmdbuf[3] = length;
+
+ u32 * staticbufs = cmdbuf + 0x100;
+
+ u32 saved1 = staticbufs[0x0];
+ u32 saved2 = staticbufs[0x4];
+
+ staticbufs[0] = (length<<14) | 2;
+ staticbufs[4] = (u32)buffer;
+
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+
+ staticbufs[0] = saved1;
+ staticbufs[4] = saved2;
+
+ *length_read = cmdbuf[2] & 0xFFFF;
+ return cmdbuf[1];
+}
+
+//TODO change DSP_ReadPipeIfPossibleEx into DSP_ReadPipeIfPossible once unk1 is figured out
+//However it seems that it is always used with value 0
+Result DSP_ReadPipeIfPossible(u32 channel, u8 const *buffer, u16 length, u16* length_read)
+{
+ return DSP_ReadPipeIfPossibleEx(channel,0,buffer,length, length_read);
+}
+
+Result DSP_WriteProcessPipe(u32 channel, u8 const *buffer, u32 length)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0xd,2,2);
+ cmdbuf[1] = channel;
+ cmdbuf[2] = length;
+ cmdbuf[3] = IPC_Desc_StaticBuffer(length,1);
+ cmdbuf[4] = (u32) buffer;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+Result DSP_ConvertProcessAddressFromDspDram(u32 dsp_address, u32 *arm_address)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0xc,1,0);
+ cmdbuf[1] = dsp_address;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *arm_address = cmdbuf[2];
+ return cmdbuf[1];
+}
+
+Result DSP_RecvData(u16 regNo, u16 * value)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x1,1,0) ;
+ cmdbuf[1] = regNo;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *value = cmdbuf[2] & 0xFFFF;
+ return cmdbuf[1];
+}
+
+Result DSP_RecvDataIsReady(u16 regNo, bool * is_ready)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x2,1,0);
+ cmdbuf[1] = regNo;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *is_ready = cmdbuf[2] & 0xFF;
+ return cmdbuf[1];
+}
+
+
+// Writes data to the reg regNo
+// *(_WORD *)(8 * regNo + 0x1ED03024) = value
+Result DSP_SendData(u16 regNo, u16 value)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x3,2,0);
+ cmdbuf[1] = regNo;
+ cmdbuf[1] = value;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ return cmdbuf[1];
+}
+
+Result DSP_SendDataIsEmpty(u16 regNo, bool * is_empty)
+{
+ Result ret = 0;
+ u32* cmdbuf = getThreadCommandBuffer();
+ cmdbuf[0] = IPC_MakeHeader(0x4,1,0);
+ cmdbuf[1] = regNo;
+ if ((ret = svcSendSyncRequest(dspHandle)) != 0) return ret;
+ *is_empty = cmdbuf[2] & 0xFF;
+ return cmdbuf[1];
+}
+
projects / corbenik / ctrulib.git / commitdiff