1 /******************************************************************************
3 * Copyright (C) 2014 Xilinx, Inc. All rights reserved.
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6 * of this software and associated documentation files (the "Software"), to deal
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9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * Use of the Software is limited solely to applications:
16 * (a) running on a Xilinx device, or
17 * (b) that interact with a Xilinx device through a bus or interconnect.
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29 * this Software without prior written authorization from Xilinx.
31 ******************************************************************************/
32 /*****************************************************************************/
35 * The CSU_DMA is present inside CSU (Configuration Security Unit) module which
36 * is located within the Low-Power Subsystem (LPS) internal to the PS.
37 * CSU_DMA allows the CSU to move data efficiently between the memory (32 bit
38 * AXI interface) and the CSU stream peripherals (SHA, AES and PCAP) via Secure
39 * Stream Switch (SSS).
41 * The CSU_DMA is a 2 channel simple DMA, allowing separate control of the SRC
42 * (read) channel and DST (write) channel. The DMA is effectively able to
44 * - From PS-side to the SSS-side (SRC DMA only)
45 * - From SSS-side to the PS-side (DST DMA only)
46 * - Simultaneous PS-side to SSS_side and SSS-side to the PS-side
48 * <b>Initialization & Configuration</b>
50 * The device driver enables higher layer software (e.g., an application) to
51 * communicate to the CSU_DMA core.
53 * XCsuDma_CfgInitialize() API is used to initialize the CSU_DMA core.
54 * The user needs to first call the XCsuDma_LookupConfig() API which returns
55 * the Configuration structure pointer which is passed as a parameter to the
56 * XCsuDma_CfgInitialize() API.
59 * This driver will not support handling of interrupts user should write handler
60 * to handle the interrupts.
62 * <b> Virtual Memory </b>
64 * This driver supports Virtual Memory. The RTOS is responsible for calculating
65 * the correct device base address in Virtual Memory space.
69 * This driver is not thread safe. Any needs for threads or thread mutual
70 * exclusion must be satisfied by the layer above this driver.
74 * Asserts are used within all Xilinx drivers to enforce constraints on argument
75 * values. Asserts can be turned off on a system-wide basis by defining, at
76 * compile time, the NDEBUG identifier. By default, asserts are turned on and it
77 * is recommended that users leave asserts on during development.
79 * <b> Building the driver </b>
81 * The XCsuDma driver is composed of several source files. This allows the user
82 * to build and link only those parts of the driver that are necessary.
86 * This header file contains identifiers and register-level driver functions (or
87 * macros), range macros, structure typedefs that can be used to access the
88 * Xilinx CSU_DMA core instance.
92 * MODIFICATION HISTORY:
94 * Ver Who Date Changes
95 * ----- ------ -------- -----------------------------------------------------
96 * 1.0 vnsld 22/10/14 First release
99 ******************************************************************************/
102 #define XCSUDMA_H_ /**< Prevent circular inclusions
103 * by using protection macros */
109 /***************************** Include Files *********************************/
111 #include "xcsudma_hw.h"
112 #include "xil_types.h"
113 #include "xil_assert.h"
115 #include "xil_cache.h"
117 /************************** Constant Definitions *****************************/
119 /** @name CSU_DMA Channels
123 XCSUDMA_SRC_CHANNEL = 0U, /**< Source Channel of CSU_DMA */
124 XCSUDMA_DST_CHANNEL /**< Destination Channel of CSU_DMA */
128 /** @name CSU_DMA pause types
132 XCSUDMA_PAUSE_MEMORY, /**< Pauses memory data transfer
134 XCSUDMA_PAUSE_STREAM, /**< Pauses stream data transfer
141 /** @name Ranges of Size
144 #define XCSUDMA_SIZE_MAX 0x07FFFFFF /**< Maximum allowed no of words */
148 /***************** Macros (Inline Functions) Definitions *********************/
150 /*****************************************************************************/
153 * This function resets the CSU_DMA core.
161 * void XCsuDma_Reset()
163 ******************************************************************************/
164 #define XCsuDma_Reset() \
165 Xil_Out32(((u32)(XCSU_BASEADDRESS) + (u32)(XCSU_DMA_RESET_OFFSET)), \
166 (u32)(XCSUDMA_RESET_SET_MASK)); \
167 Xil_Out32(((u32)(XCSU_BASEADDRESS) + (u32)(XCSU_DMA_RESET_OFFSET)), \
168 (u32)(XCSUDMA_RESET_UNSET_MASK));
170 /*****************************************************************************/
172 * This function will be in busy while loop until the data transfer is
175 * @param InstancePtr is a pointer to XCsuDma instance to be worked on.
176 * @param Channel represents the type of channel either it is Source or
178 * Source channel - XCSUDMA_SRC_CHANNEL
179 * Destination Channel - XCSUDMA_DST_CHANNEL
183 * @note This function should be called after XCsuDma_Transfer in polled
184 * mode to wait until the data gets transfered completely.
186 * void XCsuDma_WaitForDone(XCsuDma *InstancePtr,
187 * XCsuDma_Channel Channel)
189 ******************************************************************************/
190 #define XCsuDma_WaitForDone(InstancePtr,Channel) \
191 while((XCsuDma_ReadReg(((InstancePtr)->Config.BaseAddress), \
192 ((u32)(XCSUDMA_I_STS_OFFSET) + \
193 ((u32)(Channel) * (u32)(XCSUDMA_OFFSET_DIFF)))) & \
194 (u32)(XCSUDMA_IXR_DONE_MASK)) != (XCSUDMA_IXR_DONE_MASK))
196 /*****************************************************************************/
199 * This function returns the number of completed SRC/DST DMA transfers that
200 * have not been acknowledged by software based on the channel selection.
202 * @param InstancePtr is a pointer to XCsuDma instance to be worked on.
203 * @param Channel represents the type of channel either it is Source or
205 * Source channel - XCSUDMA_SRC_CHANNEL
206 * Destination Channel - XCSUDMA_DST_CHANNEL
208 * @return Count is number of completed DMA transfers but not acknowledged
210 * - 000 - All finished transfers have been acknowledged.
211 * - Count - Count number of finished transfers are still
216 * u8 XCsuDma_GetDoneCount(XCsuDma *InstancePtr,
217 * XCsuDma_Channel Channel)
219 ******************************************************************************/
220 #define XCsuDma_GetDoneCount(InstancePtr, Channel) \
221 ((XCsuDma_ReadReg(((InstancePtr)->Config.BaseAddress), \
222 ((u32)(XCSUDMA_STS_OFFSET) + \
223 ((u32)(Channel) * (u32)(XCSUDMA_OFFSET_DIFF)))) & \
224 (u32)(XCSUDMA_STS_DONE_CNT_MASK)) >> \
225 (u32)(XCSUDMA_STS_DONE_CNT_SHIFT))
227 /*****************************************************************************/
230 * This function returns the current SRC/DST FIFO level in 32 bit words of the
232 * @param InstancePtr is a pointer to XCsuDma instance to be worked on.
233 * @param Channel represents the type of channel either it is Source or
235 * Source channel - XCSUDMA_SRC_CHANNEL
236 * Destination Channel - XCSUDMA_DST_CHANNEL
238 * @return FIFO level. (Range is 0 to 128)
239 * - 0 Indicates empty
240 * - Any number 1 to 128 indicates the number of entries in FIFO.
244 * u8 XCsuDma_GetFIFOLevel(XCsuDma *InstancePtr,
245 * XCsuDma_Channel Channel)
247 ******************************************************************************/
248 #define XCsuDma_GetFIFOLevel(InstancePtr, Channel) \
249 ((XCsuDma_ReadReg(((InstancePtr)->Config.BaseAddress), \
250 ((u32)(XCSUDMA_STS_OFFSET) + \
251 ((u32)(Channel) * (u32)(XCSUDMA_OFFSET_DIFF)))) & \
252 (u32)(XCSUDMA_STS_FIFO_LEVEL_MASK)) >> \
253 (u32)(XCSUDMA_STS_FIFO_LEVEL_SHIFT))
255 /*****************************************************************************/
258 * This function returns the current number of read(src)/write(dst) outstanding
259 * commands based on the type of channel selected.
261 * @param InstancePtr is a pointer to XCsuDma instance to be worked on.
262 * @param Channel represents the type of channel either it is Source or
264 * Source channel - XCSUDMA_SRC_CHANNEL
265 * Destination Channel - XCSUDMA_DST_CHANNEL
267 * @return Count of outstanding commands. (Range is 0 to 9).
271 * u8 XCsuDma_GetWROutstandCount(XCsuDma *InstancePtr,
272 * XCsuDma_Channel Channel)
274 ******************************************************************************/
275 #define XCsuDma_GetWROutstandCount(InstancePtr, Channel) \
276 ((XCsuDma_ReadReg(((InstancePtr)->Config.BaseAddress), \
277 ((u32)(XCSUDMA_STS_OFFSET) + \
278 ((u32)(Channel) * (u32)(XCSUDMA_OFFSET_DIFF)))) & \
279 (u32)(XCUSDMA_STS_OUTSTDG_MASK)) >> \
280 (u32)(XCUSDMA_STS_OUTSTDG_SHIFT))
282 /*****************************************************************************/
285 * This function returns the status of Channel either it is busy or not.
287 * @param InstancePtr is a pointer to XCsuDma instance to be worked on.
288 * @param Channel represents the type of channel either it is Source or
290 * Source channel - XCSUDMA_SRC_CHANNEL
291 * Destination Channel - XCSUDMA_DST_CHANNEL
293 * @return Returns the current status of the core.
294 * - TRUE represents core is currently busy.
295 * - FALSE represents core is not involved in any transfers.
299 * s32 XCsuDma_IsBusy(XCsuDma *InstancePtr, XCsuDma_Channel Channel)
301 ******************************************************************************/
303 #define XCsuDma_IsBusy(InstancePtr, Channel) \
304 ((XCsuDma_ReadReg(((InstancePtr)->Config.BaseAddress), \
305 ((u32)(XCSUDMA_STS_OFFSET) + \
306 ((u32)(Channel) * (u32)(XCSUDMA_OFFSET_DIFF)))) & \
307 (u32)(XCSUDMA_STS_BUSY_MASK)) == (XCSUDMA_STS_BUSY_MASK)) ? \
311 /**************************** Type Definitions *******************************/
314 * This typedef contains configuration information for a CSU_DMA core.
315 * Each CSU_DMA core should have a configuration structure associated.
318 u16 DeviceId; /**< DeviceId is the unique ID of the
320 u32 BaseAddress; /**< BaseAddress is the physical base address
321 * of the device's registers */
325 /******************************************************************************/
328 * The XCsuDma driver instance data structure. A pointer to an instance data
329 * structure is passed around by functions to refer to a specific driver
333 XCsuDma_Config Config; /**< Hardware configuration */
334 u32 IsReady; /**< Device and the driver instance
339 /******************************************************************************/
341 * This typedef contains all the configuration feilds which needs to be set
342 * before the start of the data transfer. All these feilds of CSU_DMA can be
343 * configured by using XCsuDma_SetConfig API.
346 u8 SssFifoThesh; /**< SSS FIFO threshold value */
347 u8 ApbErr; /**< ABP invalid access error */
348 u8 EndianType; /**< Type of endianess */
349 u8 AxiBurstType; /**< Type of AXI bus */
350 u32 TimeoutValue; /**< Time out value */
351 u8 FifoThresh; /**< FIFO threshold value */
352 u8 Acache; /**< AXI CACHE selection */
353 u8 RouteBit; /**< Selection of Route */
354 u8 TimeoutEn; /**< Enable of time out counters */
355 u16 TimeoutPre; /**< Pre scaler value */
356 u8 MaxOutCmds; /**< Maximum number of outstanding
360 /*****************************************************************************/
363 /************************** Function Prototypes ******************************/
365 XCsuDma_Config *XCsuDma_LookupConfig(u16 DeviceId);
367 s32 XCsuDma_CfgInitialize(XCsuDma *InstancePtr, XCsuDma_Config *CfgPtr,
369 void XCsuDma_Transfer(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
370 UINTPTR Addr, u32 Size, u8 EnDataLast);
371 void XCsuDma_LoopBackTransfer(XCsuDma *InstancePtr, u64 SrcAddr, u64 DstAddr,
373 u64 XCsuDma_GetAddr(XCsuDma *InstancePtr, XCsuDma_Channel Channel);
374 u32 XCsuDma_GetSize(XCsuDma *InstancePtr, XCsuDma_Channel Channel);
376 void XCsuDma_Pause(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
377 XCsuDma_PauseType Type);
378 s32 XCsuDma_IsPaused(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
379 XCsuDma_PauseType Type);
380 void XCsuDma_Resume(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
381 XCsuDma_PauseType Type);
383 u32 XCsuDma_GetCheckSum(XCsuDma *InstancePtr);
384 void XCsuDma_ClearCheckSum(XCsuDma *InstancePtr);
386 void XCsuDma_SetConfig(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
387 XCsuDma_Configure *ConfigurValues);
388 void XCsuDma_GetConfig(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
389 XCsuDma_Configure *ConfigurValues);
390 void XCsuDma_ClearDoneCount(XCsuDma *InstancePtr, XCsuDma_Channel Channel);
392 void XCsuDma_SetSafetyCheck(XCsuDma *InstancePtr, u32 Value);
393 u32 XCsuDma_GetSafetyCheck(XCsuDma *InstancePtr);
395 /* Interrupt related APIs */
396 u32 XCsuDma_IntrGetStatus(XCsuDma *InstancePtr, XCsuDma_Channel Channel);
397 void XCsuDma_IntrClear(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
399 void XCsuDma_EnableIntr(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
401 void XCsuDma_DisableIntr(XCsuDma *InstancePtr, XCsuDma_Channel Channel,
403 u32 XCsuDma_GetIntrMask(XCsuDma *InstancePtr, XCsuDma_Channel Channel);
405 s32 XCsuDma_SelfTest(XCsuDma *InstancePtr);
407 /******************************************************************************/
414 #endif /* End of protection macro */