int smd_write(smd_channel_info_t *ch, void *data, uint32_t len, int ch_type)
{
smd_pkt_hdr smd_hdr;
uint32_t size = 0;
memset(&smd_hdr, 0, sizeof(smd_pkt_hdr));
if(len + sizeof(smd_hdr) > ch->fifo_size)
{
dprintf(CRITICAL,"%s: len is greater than fifo sz\n", __func__);
return -1;
}
/* Read the indices from smem */
ch->port_info = smem_get_alloc_entry(SMEM_SMD_BASE_ID + ch->alloc_entry.cid,
&size);
if(!ch->port_info)
{
dprintf(CRITICAL,"%s: unable to find index in smem\n", __func__);
ASSERT(0);
}
if(!is_channel_open(ch))
{
dprintf(CRITICAL,"%s: channel is not in OPEN state \n", __func__);
return -1;
}
if(!ch->port_info->ch0.DTR_DSR)
{
dprintf(CRITICAL,"%s: DTR is off\n", __func__);
return -1;
}
/* Clear the data_read flag */
ch->port_info->ch1.data_read = 0;
/*copy the local buf to smd buf */
smd_hdr.pkt_size = len;
memcpy_to_fifo(ch, (uint32_t *)&smd_hdr, sizeof(smd_hdr));
memcpy_to_fifo(ch, data, len);
dsb();
/* Set the necessary flags */
ch->port_info->ch0.data_written = 1;
ch->port_info->ch0.mask_recv_intr = 0;
dsb();
smd_notify_rpm();
return 0;
}
int smd_write(smd_channel_info_t *ch, void *data, uint32_t len, int ch_type)
{
smd_pkt_hdr smd_hdr;
uint32_t size = 0;
memset(&smd_hdr, 0, sizeof(smd_pkt_hdr));
if(len + sizeof(smd_hdr) > ch->fifo_size)
{
dprintf(CRITICAL,"%s: len is greater than fifo sz\n", __func__);
return -1;
}
/* Read the indices from smem */
ch->port_info = smem_get_alloc_entry(SMEM_SMD_BASE_ID + ch->alloc_entry.cid,
&size);
if(!is_channel_open(ch))
{
dprintf(CRITICAL,"%s: channel is not in OPEN state \n", __func__);
return -1;
}
if(!ch->port_info->ch0.DTR_DSR)
{
dprintf(CRITICAL,"%s: DTR is off\n", __func__);
return -1;
}
/* Clear the data_read flag */
ch->port_info->ch1.data_read = 0;
/*copy the local buf to smd buf */
smd_hdr.pkt_size = len;
memcpy(ch->send_buf + ch->port_info->ch0.write_index, &smd_hdr, sizeof(smd_hdr));
memcpy(ch->send_buf + ch->port_info->ch0.write_index + sizeof(smd_hdr), data, len);
arch_invalidate_cache_range((addr_t)ch->send_buf+ch->port_info->ch0.write_index, sizeof(smd_hdr) + len);
/* Update write index */
ch->port_info->ch0.write_index += sizeof(smd_hdr) + len;
dsb();
/* Set the necessary flags */
ch->port_info->ch0.data_written = 1;
ch->port_info->ch0.mask_recv_intr = 0;
dsb();
smd_notify_rpm();
return 0;
}