static void
qpic_nand_wait_for_cmd_exec(uint32_t num_desc)
{
/* Create a read/write event to notify the periperal of the added desc. */
bam_sys_gen_event(&bam, CMD_PIPE_INDEX, num_desc);
/* Wait for the descriptors to be processed */
bam_wait_for_interrupt(&bam, CMD_PIPE_INDEX, P_PRCSD_DESC_EN_MASK);
/* Read offset update for the circular FIFO */
bam_read_offset_update(&bam, CMD_PIPE_INDEX);
}
static void crypto_wait_for_cmd_exec(struct bam_instance *bam_core,
uint32_t num_desc,
uint8_t pipe)
{
/* Create a read/write event to notify the periperal of the added desc. */
bam_sys_gen_event(bam_core, pipe, num_desc);
/* Wait for the descriptors to be processed */
bam_wait_for_interrupt(bam_core, pipe, P_PRCSD_DESC_EN_MASK);
/* Read offset update for the circular FIFO */
bam_read_offset_update(bam_core, pipe);
}
/* Function to add BAM descriptors for a given fifo.
* bam : BAM instance to be used.
* data_ptr : Memory address for data transfer.
* data_len : Length of the data_ptr.
* flags : Flags to be set on the last desc added.
*
* Note: This function also notifies the BAM about the added descriptors.
*/
int bam_add_desc(struct bam_instance *bam,
unsigned int pipe_num,
unsigned char *data_ptr,
unsigned int data_len,
unsigned flags)
{
int bam_ret = BAM_RESULT_SUCCESS;
unsigned int len = data_len;
unsigned int desc_len;
unsigned int n = 0;
unsigned int desc_flags;
dprintf(INFO, "Data length for BAM transfer is %u\n", data_len);
if (data_ptr == NULL || len == 0)
{
dprintf(CRITICAL, "Wrong params for BAM transfer \n");
bam_ret = BAM_RESULT_FAILURE;
goto bam_add_desc_error;
}
/* Check if we have enough space in FIFO */
if (len > (unsigned)bam->pipe[pipe_num].fifo.size * BAM_MAX_DESC_DATA_LEN)
{
dprintf(CRITICAL, "Data transfer exceeds desc fifo length.\n");
bam_ret = BAM_RESULT_FAILURE;
goto bam_add_desc_error;
}
while (len)
{
/* There are only 16 bits to write data length.
* If more bits are needed, create more
* descriptors.
*/
if (len > BAM_MAX_DESC_DATA_LEN)
{
desc_len = BAM_MAX_DESC_DATA_LEN;
len -= BAM_MAX_DESC_DATA_LEN;
desc_flags = 0;
}
else
{
desc_len = len;
len = 0;
/* Set correct flags on the last desc. */
desc_flags = flags;
}
/* Write descriptor */
bam_add_one_desc(bam, pipe_num, data_ptr, desc_len, desc_flags);
data_ptr += BAM_MAX_DESC_DATA_LEN;
n++;
}
/* Create a read/write event to notify the periperal of the added desc. */
bam_sys_gen_event(bam, pipe_num, n);
bam_add_desc_error:
return bam_ret;
}
