* membase is an 'ioremapped' cookie. This is compatible with the old
* serial.c driver, and is currently the preferred form.
*/
-#include <linux/config.h>
+
+#if defined(CONFIG_SERIAL_M32R_SIO_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/irq.h>
-#if defined(CONFIG_SERIAL_M32R_SIO_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#define PORT_SIO 1
-#define PORT_MAX_SIO 1
+#define PORT_M32R_BASE PORT_M32R_SIO
+#define PORT_INDEX(x) (x - PORT_M32R_BASE + 1)
#define BAUD_RATE 115200
#include <linux/serial_core.h>
#include "m32r_sio.h"
#include "m32r_sio_reg.h"
-/*
- * Configuration:
- * share_irqs - whether we pass SA_SHIRQ to request_irq(). This option
- * is unsafe when used on edge-triggered interrupts.
- */
-unsigned int share_irqs_sio = M32R_SIO_SHARE_IRQS;
-
/*
* Debugging.
*/
*/
#define is_real_interrupt(irq) ((irq) != 0)
-/*
- * This converts from our new CONFIG_ symbols to the symbols
- * that asm/serial.h expects. You _NEED_ to comment out the
- * linux/config.h include contained inside asm/serial.h for
- * this to work.
- */
-#undef CONFIG_SERIAL_MANY_PORTS
-#undef CONFIG_SERIAL_DETECT_IRQ
-#undef CONFIG_SERIAL_MULTIPORT
-#undef CONFIG_HUB6
+#define BASE_BAUD 115200
-#ifdef CONFIG_SERIAL_M32R_SIO_DETECT_IRQ
-#define CONFIG_SERIAL_DETECT_IRQ 1
-#endif
-#ifdef CONFIG_SERIAL_M32R_SIO_MULTIPORT
-#define CONFIG_SERIAL_MULTIPORT 1
-#endif
-#ifdef CONFIG_SERIAL_M32R_SIO_MANY_PORTS
-#define CONFIG_SERIAL_MANY_PORTS 1
-#endif
+/* Standard COM flags */
+#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
/*
- * HUB6 is always on. This will be removed once the header
- * files have been cleaned.
+ * SERIAL_PORT_DFNS tells us about built-in ports that have no
+ * standard enumeration mechanism. Platforms that can find all
+ * serial ports via mechanisms like ACPI or PCI need not supply it.
*/
-#define CONFIG_HUB6 1
+#if defined(CONFIG_PLAT_USRV)
-#include <asm/serial.h>
+#define SERIAL_PORT_DFNS \
+ /* UART CLK PORT IRQ FLAGS */ \
+ { 0, BASE_BAUD, 0x3F8, PLD_IRQ_UART0, STD_COM_FLAGS }, /* ttyS0 */ \
+ { 0, BASE_BAUD, 0x2F8, PLD_IRQ_UART1, STD_COM_FLAGS }, /* ttyS1 */
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
-static struct old_serial_port old_serial_port[] = {
- { 0, BASE_BAUD, ((unsigned long)PLD_ESIO0CR), PLD_IRQ_SIO0_RCV, STD_COM_FLAGS },
-};
+#else /* !CONFIG_PLAT_USRV */
+
+#if defined(CONFIG_SERIAL_M32R_PLDSIO)
+#define SERIAL_PORT_DFNS \
+ { 0, BASE_BAUD, ((unsigned long)PLD_ESIO0CR), PLD_IRQ_SIO0_RCV, \
+ STD_COM_FLAGS }, /* ttyS0 */
#else
+#define SERIAL_PORT_DFNS \
+ { 0, BASE_BAUD, M32R_SIO_OFFSET, M32R_IRQ_SIO0_R, \
+ STD_COM_FLAGS }, /* ttyS0 */
+#endif
+
+#endif /* !CONFIG_PLAT_USRV */
+
static struct old_serial_port old_serial_port[] = {
- { 0, BASE_BAUD, M32R_SIO_OFFSET, M32R_IRQ_SIO0_R, STD_COM_FLAGS },
+ SERIAL_PORT_DFNS
};
-#endif
#define UART_NR ARRAY_SIZE(old_serial_port)
/*
* Here we define the default xmit fifo size used for each type of UART.
*/
-static const struct serial_uart_config uart_config[PORT_MAX_SIO+1] = {
- { "unknown", 1, 0 },
- { "M32RSIO", 1, 0 }
+static const struct serial_uart_config uart_config[] = {
+ [PORT_UNKNOWN] = {
+ .name = "unknown",
+ .dfl_xmit_fifo_size = 1,
+ .flags = 0,
+ },
+ [PORT_INDEX(PORT_M32R_SIO)] = {
+ .name = "M32RSIO",
+ .dfl_xmit_fifo_size = 1,
+ .flags = 0,
+ },
};
#ifdef CONFIG_SERIAL_M32R_PLDSIO
#endif /* CONFIG_SERIAL_M32R_PLDSIO */
-static _INLINE_ unsigned int sio_in(struct uart_sio_port *up, int offset)
+static unsigned int sio_in(struct uart_sio_port *up, int offset)
{
return __sio_in(up->port.iobase + offset);
}
-static _INLINE_ void sio_out(struct uart_sio_port *up, int offset, int value)
+static void sio_out(struct uart_sio_port *up, int offset, int value)
{
__sio_out(value, up->port.iobase + offset);
}
-static _INLINE_ unsigned int serial_in(struct uart_sio_port *up, int offset)
+static unsigned int serial_in(struct uart_sio_port *up, int offset)
{
if (!offset)
return 0;
return __sio_in(offset);
}
-static _INLINE_ void
-serial_out(struct uart_sio_port *up, int offset, int value)
+static void serial_out(struct uart_sio_port *up, int offset, int value)
{
if (!offset)
return;
__sio_out(value, offset);
}
-static void m32r_sio_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void m32r_sio_stop_tx(struct uart_port *port)
{
struct uart_sio_port *up = (struct uart_sio_port *)port;
}
}
-static void m32r_sio_start_tx(struct uart_port *port, unsigned int tty_start)
+static void m32r_sio_start_tx(struct uart_port *port)
{
#ifdef CONFIG_SERIAL_M32R_PLDSIO
struct uart_sio_port *up = (struct uart_sio_port *)port;
serial_out(up, UART_IER, up->ier);
}
-static _INLINE_ void receive_chars(struct uart_sio_port *up, int *status,
- struct pt_regs *regs)
+static void receive_chars(struct uart_sio_port *up, int *status)
{
struct tty_struct *tty = up->port.info->tty;
unsigned char ch;
+ unsigned char flag;
int max_count = 256;
do {
- if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
- tty->flip.work.func((void *)tty);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE)
- return; // if TTY_DONT_FLIP is set
- }
ch = sio_in(up, SIORXB);
- *tty->flip.char_buf_ptr = ch;
- *tty->flip.flag_buf_ptr = TTY_NORMAL;
+ flag = TTY_NORMAL;
up->port.icount.rx++;
if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
if (*status & UART_LSR_BI) {
DEBUG_INTR("handling break....");
- *tty->flip.flag_buf_ptr = TTY_BREAK;
+ flag = TTY_BREAK;
} else if (*status & UART_LSR_PE)
- *tty->flip.flag_buf_ptr = TTY_PARITY;
+ flag = TTY_PARITY;
else if (*status & UART_LSR_FE)
- *tty->flip.flag_buf_ptr = TTY_FRAME;
+ flag = TTY_FRAME;
}
- if (uart_handle_sysrq_char(&up->port, ch, regs))
+ if (uart_handle_sysrq_char(&up->port, ch))
goto ignore_char;
- if ((*status & up->port.ignore_status_mask) == 0) {
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
- }
- if ((*status & UART_LSR_OE) &&
- tty->flip.count < TTY_FLIPBUF_SIZE) {
+ if ((*status & up->port.ignore_status_mask) == 0)
+ tty_insert_flip_char(tty, ch, flag);
+
+ if (*status & UART_LSR_OE) {
/*
* Overrun is special, since it's reported
* immediately, and doesn't affect the current
* character.
*/
- *tty->flip.flag_buf_ptr = TTY_OVERRUN;
- tty->flip.flag_buf_ptr++;
- tty->flip.char_buf_ptr++;
- tty->flip.count++;
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
ignore_char:
*status = serial_in(up, UART_LSR);
tty_flip_buffer_push(tty);
}
-static _INLINE_ void transmit_chars(struct uart_sio_port *up)
+static void transmit_chars(struct uart_sio_port *up)
{
struct circ_buf *xmit = &up->port.info->xmit;
int count;
return;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
- m32r_sio_stop_tx(&up->port, 0);
+ m32r_sio_stop_tx(&up->port);
return;
}
DEBUG_INTR("THRE...");
if (uart_circ_empty(xmit))
- m32r_sio_stop_tx(&up->port, 0);
+ m32r_sio_stop_tx(&up->port);
}
/*
* This handles the interrupt from one port.
*/
static inline void m32r_sio_handle_port(struct uart_sio_port *up,
- unsigned int status, struct pt_regs *regs)
+ unsigned int status)
{
DEBUG_INTR("status = %x...", status);
if (status & 0x04)
- receive_chars(up, &status, regs);
- // check_modem_status(up);
+ receive_chars(up, &status);
if (status & 0x01)
transmit_chars(up);
}
* This means we need to loop through all ports. checking that they
* don't have an interrupt pending.
*/
-static irqreturn_t m32r_sio_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
+static irqreturn_t m32r_sio_interrupt(int irq, void *dev_id)
{
struct irq_info *i = dev_id;
struct list_head *l, *end = NULL;
sts = sio_in(up, SIOSTS);
if (sts & 0x5) {
spin_lock(&up->port.lock);
- m32r_sio_handle_port(up, sts, regs);
+ m32r_sio_handle_port(up, sts);
spin_unlock(&up->port.lock);
end = NULL;
static int serial_link_irq_chain(struct uart_sio_port *up)
{
struct irq_info *i = irq_lists + up->port.irq;
- int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? SA_SHIRQ : 0;
+ int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0;
spin_lock_irq(&i->lock);
}
/*
- * This function is used to handle ports that do not have an
- * interrupt. This doesn't work very well for 16450's, but gives
- * barely passable results for a 16550A. (Although at the expense
- * of much CPU overhead).
+ * This function is used to handle ports that do not have an interrupt.
*/
static void m32r_sio_timeout(unsigned long data)
{
sts = sio_in(up, SIOSTS);
if (sts & 0x5) {
spin_lock(&up->port.lock);
- m32r_sio_handle_port(up, sts, NULL);
+ m32r_sio_handle_port(up, sts);
spin_unlock(&up->port.lock);
}
}
static void m32r_sio_set_termios(struct uart_port *port,
- struct termios *termios, struct termios *old)
+ struct ktermios *termios, struct ktermios *old)
{
struct uart_sio_port *up = (struct uart_sio_port *)port;
unsigned char cval = 0;
switch (termios->c_cflag & CSIZE) {
case CS5:
- cval = 0x00;
+ cval = UART_LCR_WLEN5;
break;
case CS6:
- cval = 0x01;
+ cval = UART_LCR_WLEN6;
break;
case CS7:
- cval = 0x02;
+ cval = UART_LCR_WLEN7;
break;
default:
case CS8:
- cval = 0x03;
+ cval = UART_LCR_WLEN8;
break;
}
if (termios->c_cflag & CSTOPB)
- cval |= 0x04;
+ cval |= UART_LCR_STOP;
if (termios->c_cflag & PARENB)
cval |= UART_LCR_PARITY;
if (!(termios->c_cflag & PARODD))
int ret = 0;
switch (up->port.iotype) {
- case SERIAL_IO_MEM:
+ case UPIO_MEM:
if (up->port.mapbase) {
#ifdef CONFIG_SERIAL_M32R_PLDSIO
*res = request_mem_region(up->port.mapbase, size, "serial");
#else
start = up->port.mapbase;
- start += UART_RSA_BASE << up->port.regshift;
*res = request_mem_region(start, size, "serial");
#endif
if (!*res)
}
break;
- case SERIAL_IO_HUB6:
- case SERIAL_IO_PORT:
+ case UPIO_PORT:
*res = request_region(up->port.iobase, size, "serial");
if (!*res)
ret = -EBUSY;
return ret;
}
-static int
-m32r_sio_request_rsa_resource(struct uart_sio_port *up, struct resource **res)
-{
- unsigned int size = 8 << up->port.regshift;
- unsigned long start;
- int ret = 0;
-
- switch (up->port.iotype) {
- case SERIAL_IO_MEM:
- if (up->port.mapbase) {
- start = up->port.mapbase;
- start += UART_RSA_BASE << up->port.regshift;
-#ifdef CONFIG_SERIAL_M32R_PLDSIO
- *res = request_mem_region(start, size, "serial-rsa");
-#else
- *res = request_mem_region(up->port.mapbase, size, "serial-rsa");
-#endif
- if (!*res)
- ret = -EBUSY;
- }
- break;
-
- case SERIAL_IO_HUB6:
- case SERIAL_IO_PORT:
- start = up->port.iobase;
- start += UART_RSA_BASE << up->port.regshift;
- *res = request_region(up->port.iobase, size, "serial-rsa");
- if (!*res)
- ret = -EBUSY;
- break;
- }
-
- return ret;
-}
-
static void m32r_sio_release_port(struct uart_port *port)
{
struct uart_sio_port *up = (struct uart_sio_port *)port;
unsigned long start, offset = 0, size = 0;
- if (up->port.type == PORT_RSA) {
- offset = UART_RSA_BASE << up->port.regshift;
- size = 8;
- }
-
size <<= up->port.regshift;
switch (up->port.iotype) {
- case SERIAL_IO_MEM:
+ case UPIO_MEM:
if (up->port.mapbase) {
/*
* Unmap the area.
}
break;
- case SERIAL_IO_HUB6:
- case SERIAL_IO_PORT:
+ case UPIO_PORT:
start = up->port.iobase;
if (size)
static int m32r_sio_request_port(struct uart_port *port)
{
struct uart_sio_port *up = (struct uart_sio_port *)port;
- struct resource *res = NULL, *res_rsa = NULL;
+ struct resource *res = NULL;
int ret = 0;
- if (up->port.type == PORT_RSA){
- ret = m32r_sio_request_rsa_resource(up, &res_rsa);
- if (ret < 0)
- return ret;
- }
ret = m32r_sio_request_std_resource(up, &res);
/*
}
if (ret < 0) {
- if (res_rsa)
- release_resource(res_rsa);
if (res)
release_resource(res);
}
+
return ret;
}
spin_lock_irqsave(&up->port.lock, flags);
- up->port.type = PORT_SIO;
+ up->port.type = (PORT_M32R_SIO - PORT_M32R_BASE + 1);
up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size;
spin_unlock_irqrestore(&up->port.lock, flags);
{
if (ser->irq >= NR_IRQS || ser->irq < 0 ||
ser->baud_base < 9600 || ser->type < PORT_UNKNOWN ||
- ser->type > PORT_MAX_SIO || ser->type == PORT_CIRRUS ||
- ser->type == PORT_STARTECH)
+ ser->type >= ARRAY_SIZE(uart_config))
return -EINVAL;
return 0;
}
static struct uart_sio_port m32r_sio_ports[UART_NR];
-static void __init m32r_sio_isa_init_ports(void)
+static void __init m32r_sio_init_ports(void)
{
struct uart_sio_port *up;
static int first = 1;
up->port.irq = irq_canonicalize(old_serial_port[i].irq);
up->port.uartclk = old_serial_port[i].baud_base * 16;
up->port.flags = old_serial_port[i].flags;
- up->port.hub6 = old_serial_port[i].hub6;
up->port.membase = old_serial_port[i].iomem_base;
up->port.iotype = old_serial_port[i].io_type;
up->port.regshift = old_serial_port[i].iomem_reg_shift;
up->port.ops = &m32r_sio_pops;
- if (share_irqs_sio)
- up->port.flags |= UPF_SHARE_IRQ;
}
}
{
int i;
- m32r_sio_isa_init_ports();
+ m32r_sio_init_ports();
for (i = 0; i < UART_NR; i++) {
struct uart_sio_port *up = &m32r_sio_ports[i];
}
}
+static void m32r_sio_console_putchar(struct uart_port *port, int ch)
+{
+ struct uart_sio_port *up = (struct uart_sio_port *)port;
+
+ wait_for_xmitr(up);
+ sio_out(up, SIOTXB, ch);
+}
+
/*
* Print a string to the serial port trying not to disturb
* any possible real use of the port...
{
struct uart_sio_port *up = &m32r_sio_ports[co->index];
unsigned int ier;
- int i;
/*
* First save the UER then disable the interrupts
ier = sio_in(up, SIOTRCR);
sio_out(up, SIOTRCR, 0);
- /*
- * Now, do each character
- */
- for (i = 0; i < count; i++, s++) {
- wait_for_xmitr(up);
-
- /*
- * Send the character out.
- * If a LF, also do CR...
- */
- sio_out(up, SIOTXB, *s);
-
- if (*s == 10) {
- wait_for_xmitr(up);
- sio_out(up, SIOTXB, 13);
- }
- }
+ uart_console_write(&up->port, s, count, m32r_sio_console_putchar);
/*
* Finally, wait for transmitter to become empty
return uart_set_options(port, co, baud, parity, bits, flow);
}
-extern struct uart_driver m32r_sio_reg;
+static struct uart_driver m32r_sio_reg;
static struct console m32r_sio_console = {
.name = "ttyS",
.write = m32r_sio_console_write,
{
sio_reset();
sio_init();
- m32r_sio_isa_init_ports();
+ m32r_sio_init_ports();
register_console(&m32r_sio_console);
return 0;
}
static struct uart_driver m32r_sio_reg = {
.owner = THIS_MODULE,
.driver_name = "sio",
- .devfs_name = "tts/",
.dev_name = "ttyS",
.major = TTY_MAJOR,
.minor = 64,
.cons = M32R_SIO_CONSOLE,
};
-/*
- * register_serial and unregister_serial allows for 16x50 serial ports to be
- * configured at run-time, to support PCMCIA modems.
- */
-
-static int __register_m32r_sio(struct serial_struct *req, int line)
-{
- struct uart_port port;
-
- port.iobase = req->port;
- port.membase = req->iomem_base;
- port.irq = req->irq;
- port.uartclk = req->baud_base * 16;
- port.fifosize = req->xmit_fifo_size;
- port.regshift = req->iomem_reg_shift;
- port.iotype = req->io_type;
- port.flags = req->flags | UPF_BOOT_AUTOCONF;
- port.mapbase = req->iomap_base;
- port.line = line;
-
- if (share_irqs_sio)
- port.flags |= UPF_SHARE_IRQ;
-
- if (HIGH_BITS_OFFSET)
- port.iobase |= (long) req->port_high << HIGH_BITS_OFFSET;
-
- /*
- * If a clock rate wasn't specified by the low level
- * driver, then default to the standard clock rate.
- */
- if (port.uartclk == 0)
- port.uartclk = BASE_BAUD * 16;
-
- return uart_register_port(&m32r_sio_reg, &port);
-}
-
-/**
- * register_serial - configure a 16x50 serial port at runtime
- * @req: request structure
- *
- * Configure the serial port specified by the request. If the
- * port exists and is in use an error is returned. If the port
- * is not currently in the table it is added.
- *
- * The port is then probed and if necessary the IRQ is autodetected
- * If this fails an error is returned.
- *
- * On success the port is ready to use and the line number is returned.
- */
-int register_m32r_sio(struct serial_struct *req)
-{
- return __register_m32r_sio(req, -1);
-}
-
-int __init early_m32r_sio_setup(struct uart_port *port)
-{
- m32r_sio_isa_init_ports();
- m32r_sio_ports[port->line].port = *port;
- m32r_sio_ports[port->line].port.ops = &m32r_sio_pops;
-
- return 0;
-}
-
-/**
- * unregister_serial - remove a 16x50 serial port at runtime
- * @line: serial line number
- *
- * Remove one serial port. This may be called from interrupt
- * context.
- */
-void unregister_m32r_sio(int line)
-{
- uart_unregister_port(&m32r_sio_reg, line);
-}
-
-/*
- * This is for ISAPNP only.
- */
-void m32r_sio_get_irq_map(unsigned int *map)
-{
- int i;
-
- for (i = 0; i < UART_NR; i++) {
- if (m32r_sio_ports[i].port.type != PORT_UNKNOWN &&
- m32r_sio_ports[i].port.irq < 16)
- *map |= 1 << m32r_sio_ports[i].port.irq;
- }
-}
-
/**
* m32r_sio_suspend_port - suspend one serial port
* @line: serial line number
{
int ret, i;
- printk(KERN_INFO "Serial: M32R SIO driver $Revision: 1.9 $ "
- "IRQ sharing %sabled\n", share_irqs_sio ? "en" : "dis");
+ printk(KERN_INFO "Serial: M32R SIO driver $Revision: 1.11 $ ");
for (i = 0; i < NR_IRQS; i++)
spin_lock_init(&irq_lists[i].lock);
module_init(m32r_sio_init);
module_exit(m32r_sio_exit);
-EXPORT_SYMBOL(register_m32r_sio);
-EXPORT_SYMBOL(unregister_m32r_sio);
-EXPORT_SYMBOL(m32r_sio_get_irq_map);
EXPORT_SYMBOL(m32r_sio_suspend_port);
EXPORT_SYMBOL(m32r_sio_resume_port);
MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Generic M32R SIO serial driver $Revision: 1.9 $");
-
-module_param(share_irqs_sio, bool, 0400);
-MODULE_PARM_DESC(share_irqs_sio, "Share IRQs with other non-M32R SIO devices"
- " (unsafe)");
+MODULE_DESCRIPTION("Generic M32R SIO serial driver $Revision: 1.11 $");
git://git.onelab.eu / linux-2.6.git / blobdiff