static void au1xmmc_send_pio(struct au1xmmc_host *host)
{
struct mmc_data *data = 0;
int sg_len, max, count = 0;
unsigned char *sg_ptr;
u32 status = 0;
struct scatterlist *sg;
data = host->mrq->data;
if (!(host->flags & HOST_F_XMIT))
return;
/* This is the pointer to the data buffer */
sg = &data->sg[host->pio.index];
sg_ptr = page_address(sg->page) + sg->offset + host->pio.offset;
/* This is the space left inside the buffer */
sg_len = data->sg[host->pio.index].length - host->pio.offset;
/* Check to if we need less then the size of the sg_buffer */
max = (sg_len > host->pio.len) ? host->pio.len : sg_len;
if (max > AU1XMMC_MAX_TRANSFER) max = AU1XMMC_MAX_TRANSFER;
for(count = 0; count < max; count++ ) {
unsigned char val;
status = au_readl(HOST_STATUS(host));
if (!(status & SD_STATUS_TH))
break;
val = *sg_ptr++;
au_writel((unsigned long) val, HOST_TXPORT(host));
au_sync();
}
host->pio.len -= count;
host->pio.offset += count;
if (count == sg_len) {
host->pio.index++;
host->pio.offset = 0;
}
if (host->pio.len == 0) {
IRQ_OFF(host, SD_CONFIG_TH);
if (host->flags & HOST_F_STOP)
SEND_STOP(host);
tasklet_schedule(&host->data_task);
}
}
static void au1xmmc_send_pio(struct au1xmmc_host *host)
{
struct mmc_data *data;
int sg_len, max, count;
unsigned char *sg_ptr, val;
u32 status;
struct scatterlist *sg;
data = host->mrq->data;
if (!(host->flags & HOST_F_XMIT))
return;
sg = &data->sg[host->pio.index];
sg_ptr = sg_virt(sg) + host->pio.offset;
sg_len = data->sg[host->pio.index].length - host->pio.offset;
max = (sg_len > host->pio.len) ? host->pio.len : sg_len;
if (max > AU1XMMC_MAX_TRANSFER)
max = AU1XMMC_MAX_TRANSFER;
for (count = 0; count < max; count++) {
status = au_readl(HOST_STATUS(host));
if (!(status & SD_STATUS_TH))
break;
val = *sg_ptr++;
au_writel((unsigned long)val, HOST_TXPORT(host));
au_sync();
}
host->pio.len -= count;
host->pio.offset += count;
if (count == sg_len) {
host->pio.index++;
host->pio.offset = 0;
}
if (host->pio.len == 0) {
IRQ_OFF(host, SD_CONFIG_TH);
if (host->flags & HOST_F_STOP)
SEND_STOP(host);
tasklet_schedule(&host->data_task);
}
}
