* PURPOSE. See the GNU General Public License for more details.
*/
-
#include <linux/kernel.h>
#include <linux/sched.h> /* For jiffies, task states */
#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
static void neo_send_immediate_char(struct channel_t *ch, unsigned char c);
static irqreturn_t neo_intr(int irq, void *voidbrd);
-
struct board_ops dgnc_neo_ops = {
.tasklet = neo_tasklet,
.intr = neo_intr,
static uint dgnc_offset_table[8] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };
-
/*
* This function allows calls to ensure that all outstanding
* PCI writes have been completed, by doing a PCI read against
unsigned char ier = readb(&ch->ch_neo_uart->ier);
unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
/* Turn on auto CTS flow control */
#if 1
ier |= UART_17158_IER_CTSDSR;
neo_pci_posting_flush(ch->ch_bd);
}
-
static inline void neo_set_rts_flow_control(struct channel_t *ch)
{
unsigned char ier = readb(&ch->ch_neo_uart->ier);
neo_pci_posting_flush(ch->ch_bd);
}
-
static inline void neo_set_ixon_flow_control(struct channel_t *ch)
{
unsigned char ier = readb(&ch->ch_neo_uart->ier);
neo_pci_posting_flush(ch->ch_bd);
}
-
static inline void neo_set_ixoff_flow_control(struct channel_t *ch)
{
unsigned char ier = readb(&ch->ch_neo_uart->ier);
neo_pci_posting_flush(ch->ch_bd);
}
-
static inline void neo_set_no_input_flow_control(struct channel_t *ch)
{
unsigned char ier = readb(&ch->ch_neo_uart->ier);
else
efr &= ~(UART_17158_EFR_ECB | UART_17158_EFR_IXOFF);
-
/* Why? Becuz Exar's spec says we have to zero it out before setting it */
writeb(0, &ch->ch_neo_uart->efr);
neo_pci_posting_flush(ch->ch_bd);
}
-
static inline void neo_set_no_output_flow_control(struct channel_t *ch)
{
unsigned char ier = readb(&ch->ch_neo_uart->ier);
neo_pci_posting_flush(ch->ch_bd);
}
-
/* change UARTs start/stop chars */
static inline void neo_set_new_start_stop_chars(struct channel_t *ch)
{
neo_pci_posting_flush(ch->ch_bd);
}
-
/*
* No locks are assumed to be held when calling this function.
*/
spin_unlock_irqrestore(&ch->ch_lock, flags);
}
-
/*
* Parse the ISR register.
*/
}
}
-
static inline void neo_parse_lsr(struct dgnc_board *brd, uint port)
{
struct channel_t *ch;
}
}
-
/*
* neo_param()
* Send any/all changes to the line to the UART.
neo_parse_modem(ch, readb(&ch->ch_neo_uart->msr));
}
-
/*
* Our board poller function.
*/
}
-
/*
* dgnc_neo_intr()
*
return IRQ_HANDLED;
}
-
/*
* Neo specific way of turning off the receiver.
* Used as a way to enforce queue flow control when in
neo_pci_posting_flush(ch->ch_bd);
}
-
/*
* Neo specific way of turning on the receiver.
* Used as a way to un-enforce queue flow control when in
neo_pci_posting_flush(ch->ch_bd);
}
-
static void neo_copy_data_from_uart_to_queue(struct channel_t *ch)
{
int qleft = 0;
total -= 3;
}
-
/*
* Finally, bound the copy to make sure we don't overflow
* our own queue...
spin_unlock_irqrestore(&ch->ch_lock, flags);
}
-
/*
* This function basically goes to sleep for secs, or until
* it gets signalled that the port has fully drained.
return rc;
}
-
/*
* Flush the WRITE FIFO on the Neo.
*
ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
}
-
/*
* Flush the READ FIFO on the Neo.
*
}
}
-
static void neo_copy_data_from_queue_to_uart(struct channel_t *ch)
{
ushort head;
spin_unlock_irqrestore(&ch->ch_lock, flags);
}
-
static void neo_parse_modem(struct channel_t *ch, unsigned char signals)
{
unsigned char msignals = signals;
ch->ch_mistat &= ~UART_MSR_CTS;
}
-
/* Make the UART raise any of the output signals we want up */
static void neo_assert_modem_signals(struct channel_t *ch)
{
udelay(10);
}
-
static void neo_send_start_character(struct channel_t *ch)
{
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
}
}
-
static void neo_send_stop_character(struct channel_t *ch)
{
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
}
}
-
/*
* neo_uart_init
*/
writeb(0, &ch->ch_neo_uart->efr);
writeb(UART_EFR_ECB, &ch->ch_neo_uart->efr);
-
/* Clear out UART and FIFO */
readb(&ch->ch_neo_uart->txrx);
writeb((UART_FCR_ENABLE_FIFO|UART_FCR_CLEAR_RCVR|UART_FCR_CLEAR_XMIT), &ch->ch_neo_uart->isr_fcr);
neo_pci_posting_flush(ch->ch_bd);
}
-
/*
* Make the UART completely turn off.
*/
neo_pci_posting_flush(ch->ch_bd);
}
-
static uint neo_get_uart_bytes_left(struct channel_t *ch)
{
unsigned char left = 0;
return left;
}
-
/* Channel lock MUST be held by the calling function! */
static void neo_send_break(struct channel_t *ch, int msecs)
{
}
}
-
/*
* neo_send_immediate_char.
*
neo_pci_posting_flush(ch->ch_bd);
}
-
static unsigned int neo_read_eeprom(unsigned char __iomem *base, unsigned int address)
{
unsigned int enable;
return val;
}
-
static void neo_vpd(struct dgnc_board *brd)
{
unsigned int i = 0;
projects / firefly-linux-kernel-4.4.55.git / blobdiff