/*
* Handle an MMC request
*/
static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct at91mci_host *host = mmc_priv(mmc);
host->request = mrq;
host->flags = 0;
at91_mci_process_next(host);
}
/*
* Handle an MMC request
*/
static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct at91mci_host *host = mmc_priv(mmc);
host->request = mrq;
host->flags = 0;
mod_timer(&host->timer, jiffies + HZ);
at91_mci_process_next(host);
}
/*
* Handle a command that has been completed
*/
static void at91_mci_completed_command(struct at91mci_host *host, unsigned int status)
{
struct mmc_command *cmd = host->cmd;
struct mmc_data *data = cmd->data;
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));
cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0));
cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1));
cmd->resp[2] = at91_mci_read(host, AT91_MCI_RSPR(2));
cmd->resp[3] = at91_mci_read(host, AT91_MCI_RSPR(3));
if (host->buffer) {
dma_unmap_single(NULL,
host->physical_address, host->total_length,
DMA_TO_DEVICE);
kfree(host->buffer);
host->buffer = NULL;
}
pr_debug("Status = %08X/%08x [%08X %08X %08X %08X]\n",
status, at91_mci_read(host, AT91_MCI_SR),
cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
if (status & AT91_MCI_ERRORS) {
if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) {
cmd->error = 0;
}
else {
if (status & (AT91_MCI_DTOE | AT91_MCI_DCRCE)) {
if (data) {
if (status & AT91_MCI_DTOE)
data->error = -ETIMEDOUT;
else if (status & AT91_MCI_DCRCE)
data->error = -EILSEQ;
}
} else {
if (status & AT91_MCI_RTOE)
cmd->error = -ETIMEDOUT;
else if (status & AT91_MCI_RCRCE)
cmd->error = -EILSEQ;
else
cmd->error = -EIO;
}
pr_debug("Error detected and set to %d/%d (cmd = %d, retries = %d)\n",
cmd->error, data ? data->error : 0,
cmd->opcode, cmd->retries);
}
}
else
cmd->error = 0;
at91_mci_process_next(host);
}
/*
* Handle an MMC request
*/
static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct at91mci_host *host = mmc_priv(mmc);
host->request = mrq;
host->flags = 0;
/* more than 1s timeout needed with slow SD cards */
mod_timer(&host->timer, jiffies + msecs_to_jiffies(2000));
at91_mci_process_next(host);
}
/*
* Handle a command that has been completed
*/
static void at91_mci_completed_command(struct at91mci_host *host)
{
struct mmc_command *cmd = host->cmd;
unsigned int status;
at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0));
cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1));
cmd->resp[2] = at91_mci_read(host, AT91_MCI_RSPR(2));
cmd->resp[3] = at91_mci_read(host, AT91_MCI_RSPR(3));
if (host->buffer) {
dma_free_coherent(NULL, host->total_length, host->buffer, host->physical_address);
host->buffer = NULL;
}
status = at91_mci_read(host, AT91_MCI_SR);
pr_debug("Status = %08X [%08X %08X %08X %08X]\n",
status, cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
if (status & AT91_MCI_ERRORS) {
if ((status & AT91_MCI_RCRCE) && !(mmc_resp_type(cmd) & MMC_RSP_CRC)) {
cmd->error = 0;
}
else {
if (status & (AT91_MCI_RTOE | AT91_MCI_DTOE))
cmd->error = -ETIMEDOUT;
else if (status & (AT91_MCI_RCRCE | AT91_MCI_DCRCE))
cmd->error = -EILSEQ;
else
cmd->error = -EIO;
pr_debug("Error detected and set to %d (cmd = %d, retries = %d)\n",
cmd->error, cmd->opcode, cmd->retries);
}
}
else
cmd->error = 0;
at91_mci_process_next(host);
}