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add iDMA zeromem HAL function

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Georg Rutishauser 2024-07-01 18:29:09 +02:00
parent 33bef97df3
commit 0aa2c89de3
1 changed files with 26 additions and 0 deletions
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26
include/hal/dma/idma_v2.h
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@ -217,6 +217,15 @@ static inline int pulp_idma_L1ToL2_2d(unsigned int src, unsigned int dst, unsign
*/
static inline int pulp_idma_L2ToL1_2d(unsigned int src, unsigned int dst, unsigned short size, unsigned int src_stride, unsigned int dst_stride, unsigned int num_reps);
/** DMA-based zeromem using the "init" protocol.
*
\param dst Address in memory to fill with zeros. There is no restriction on memory alignment.
\param size Number of bytes to be transfered. The only restriction is that this size must fit 16 bits, i.e. must be inferior to 65536.
\param dst_prot protocol with which the destination memory is attached (should be AXI or OBI)
\return The identifier of the transfer. This can be used with plp_dma_wait to wait for the completion of this transfer.
*/
static inline int pulp_idma_zeromem(unsigned int dst, unsigned short size, idma_prot_t dst_prot);
/** @name DMA wait functions
*/
@ -543,6 +552,7 @@ static inline int pulp_idma_L2ToL1_2d(unsigned int src, unsigned int dst, unsign
return dma_tx_id;
}
static inline int pulp_idma_L1ToL1_2d(unsigned int src, unsigned int dst, unsigned short size, unsigned int src_stride, unsigned int dst_stride, unsigned int num_reps) {
unsigned int dma_tx_id;
unsigned int cfg = IDMA_DEFAULT_CONFIG_L1TOL1_2D;
@ -559,6 +569,22 @@ static inline int pulp_idma_L1ToL1_2d(unsigned int src, unsigned int dst, unsign
return dma_tx_id;
}
static inline int pulp_idma_zeromem(unsigned int dst, unsigned short size, idma_prot_t dst_prot) {
unsigned int dma_tx_id;
unsigned int cfg = IDMA_DEFAULT_CONFIG;
cfg = pulp_idma_set_conf_prot(cfg, IDMA_PROT_INIT, dst_prot);
DMA_WRITE(dst, IDMA_REG32_3D_DST_ADDR_LOW_REG_OFFSET);
DMA_WRITE(size, IDMA_REG32_3D_LENGTH_LOW_REG_OFFSET);
DMA_WRITE(cfg, IDMA_REG32_3D_CONF_REG_OFFSET);
if (dst_prot == IDMA_PROT_AXI)
dma_tx_id = DMA_READ(IDMA_REG32_3D_NEXT_ID_0_REG_OFFSET);
else
dma_tx_id = DMA_READ(IDMA_REG32_3D_NEXT_ID_1_REG_OFFSET);
asm volatile("" : : : "memory");
return dma_tx_id;
}
static inline void plp_dma_barrier() {
while(plp_dma_status()) {
eu_evt_maskWaitAndClr(1 << IDMA_EVENT);