/**
* @fn abe_connect_cbpr_dmareq_port()
*
* Operations : enables the data echange between a DMA and the ABE through the
* CBPr registers of AESS.
*
* Parameters :
* id: port name
* f : desired data format
* d : desired dma_request line (0..7)
* a : returned pointer to the base address of the CBPr register and number of
* samples to exchange during a DMA_request.
*
* @see ABE_API.h
*/
void abe_connect_cbpr_dmareq_port(abe_port_id id, abe_data_format_t *f, abe_uint32 d, abe_dma_t *returned_dma_t)
{
_lock_enter
_log(id_connect_cbpr_dmareq_port,id,f->f,f->samp_format)
abe_port[id] = ((abe_port_t *)abe_port_init)[id];
abe_port[id].format = *f;
abe_port[id].protocol.protocol_switch = DMAREQ_PORT_PROT;
abe_port[id].protocol.p.prot_dmareq.iter = abe_dma_port_iteration(f);
abe_port[id].protocol.p.prot_dmareq.dma_addr = ABE_DMASTATUS_RAW;
abe_port[id].protocol.p.prot_dmareq.dma_data = (1 << d);
abe_port[id].status = RUN_P;
/* load the micro-task parameters */
abe_init_io_tasks(id, &((abe_port [id]).format), &((abe_port [id]).protocol));
/* load the dma_t with physical information from AE memory mapping */
abe_init_dma_t(id, &((abe_port [id]).protocol));
/* load the ATC descriptors - disabled */
abe_init_atc(id);
/* return the dma pointer address */
abe_read_port_address(id, returned_dma_t);
_lock_exit
}
/*
* ABE_INIT_ATC
*
* Parameter :
* prot : protocol being used
*
* Operations :
* load the DMEM ATC/AESS descriptors
*
* Return value :
*
*/
void abe_init_atc(abe_port_id id)
{
abe_satcdescriptor_aess desc;
abe_uint8 thr, thr1, thr2, iter, data_shift;
abe_int32 iterfactor;
// load default values of the descriptor
desc.rdpt = desc.wrpt = desc.irqdest = desc.cberr = desc.desen =0;
desc.reserved0 = desc.reserved1 = desc.reserved2 = 0;
desc.srcid = desc.destid = desc.badd = desc.iter = desc.cbsize = 0;
switch ((abe_port[id]).protocol.protocol_switch) {
case SLIMBUS_PORT_PROT:
desc.cbdir = (abe_port[id]).protocol.direction;
desc.cbsize = (abe_port[id]).protocol.p.prot_slimbus.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_slimbus.buf_addr1) >> 4;
desc.iter = (abe_port[id]).protocol.p.prot_slimbus.iter;
desc.srcid = abe_atc_srcid [(abe_port[id]).protocol.p.prot_slimbus.desc_addr1 >> 3];
desc.nw = 1;
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, (abe_port[id]).protocol.p.prot_slimbus.desc_addr1, (abe_uint32*)&desc, sizeof(desc));
desc.badd = (abe_port[id]).protocol.p.prot_slimbus.buf_addr2;
desc.srcid = abe_atc_srcid [(abe_port[id]).protocol.p.prot_slimbus.desc_addr2 >> 3];
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, (abe_port[id]).protocol.p.prot_slimbus.desc_addr2, (abe_uint32*)&desc, sizeof(desc));
break;
case SERIAL_PORT_PROT:
desc.cbdir = (abe_port[id]).protocol.direction;
desc.cbsize = (abe_port[id]).protocol.p.prot_serial.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_serial.buf_addr) >> 4;
desc.iter = (abe_port[id]).protocol.p.prot_serial.iter;
desc.srcid = abe_atc_srcid [(abe_port[id]).protocol.p.prot_serial.desc_addr >> 3];
desc.nw = 1;
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, (abe_port[id]).protocol.p.prot_serial.desc_addr, (abe_uint32*)&desc, sizeof(desc));
break;
case DMIC_PORT_PROT:
desc.cbdir = ABE_ATC_DIRECTION_IN;
desc.cbsize = (abe_port[id]).protocol.p.prot_dmic.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_dmic.buf_addr) >> 4;
desc.iter = DMIC_ITER;
desc.srcid = abe_atc_srcid [ABE_ATC_DMIC_DMA_REQ];
desc.nw = 1;
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, ABE_ATC_DMIC_DMA_REQ * ATC_SIZE, (abe_uint32*)&desc, sizeof(desc));
break;
case MCPDMDL_PORT_PROT:
abe_global_mcpdm_control = abe_port[id].protocol.p.prot_mcpdmdl.control; /* Control allowed on McPDM DL */
desc.cbdir = ABE_ATC_DIRECTION_OUT;
desc.cbsize = (abe_port[id]).protocol.p.prot_mcpdmdl.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_mcpdmdl.buf_addr) >> 4;
desc.iter = MCPDM_DL_ITER;
desc.destid = abe_atc_dstid [ABE_ATC_MCPDMDL_DMA_REQ];
desc.nw = 0;
desc.wrpt = desc.iter; /* @@@ pre-load the ATC buffer (?) */
desc.desen = 1;
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, ABE_ATC_MCPDMDL_DMA_REQ * ATC_SIZE, (abe_uint32*)&desc, sizeof(desc));
break;
case MCPDMUL_PORT_PROT:
desc.cbdir = ABE_ATC_DIRECTION_IN;
desc.cbsize = (abe_port[id]).protocol.p.prot_mcpdmul.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_mcpdmul.buf_addr) >> 4;
desc.iter = MCPDM_UL_ITER;
desc.srcid = abe_atc_srcid [ABE_ATC_MCPDMUL_DMA_REQ];
desc.wrpt = MCPDM_UL_ITER; /* @@@ pre-load the ATC buffer (Virtio bug) */
desc.nw = 1;
desc.desen = 1;
abe_block_copy(COPY_FROM_HOST_TO_ABE, ABE_DMEM, ABE_ATC_MCPDMUL_DMA_REQ * ATC_SIZE, (abe_uint32*)&desc, sizeof(desc));
break;
case PINGPONG_PORT_PROT:
/* software protocol, nothing to do on ATC */
break;
case DMAREQ_PORT_PROT:
desc.cbdir = (abe_port[id]).protocol.direction;
desc.cbsize = (abe_port[id]).protocol.p.prot_dmareq.buf_size;
desc.badd = ((abe_port[id]).protocol.p.prot_dmareq.buf_addr) >> 4;
desc.iter = 1; /* CBPr needs ITER=1. this is the eDMA job to do the iterations */
desc.nw = 0; /* data is sent on DMAreq, and never before data is prepared */
thr = (abe_int8) abe_port[id].protocol.p.prot_dmareq.thr_flow;
iterfactor = abe_dma_port_iter_factor (&((abe_port[id]).format));
data_shift = (abe_uint8)((iterfactor > 1)? 1:0); /* shift = 0 for mono, shift = 1 for stereo - see update of ATC pointers in IOtasks */
thr = (abe_uint8)(thr * iterfactor); /* scales the data threshold to the number of words in DMEM per sample */
iter = (abe_uint8) abe_dma_port_iteration(&((abe_port[id]).format));
/* check is input from ABE point of view */
if (abe_port[id].protocol.direction == ABE_ATC_DIRECTION_IN) {
/* Firmware compares X+Drift to Thresholds */
thr2 = (abe_uint8)(iter - thr);
thr1 = (abe_uint8)(iter + thr);
desc.wrpt = ((thr1 + thr2) >> 1) + 2;
} else {
