* init_etrax_debug()
*
* $Log: debugport.c,v $
+ * Revision 1.27 2005/06/10 10:34:14 starvik
+ * Real console support
+ *
+ * Revision 1.26 2005/06/07 07:06:07 starvik
+ * Added LF->CR translation to make ETRAX customers happy.
+ *
+ * Revision 1.25 2005/03/08 08:56:47 mikaelam
+ * Do only set index as port->index if port is defined, otherwise use the index from the command line
+ *
+ * Revision 1.24 2005/01/19 10:26:33 mikaelam
+ * Return the cris serial driver in console device driver callback function
+ *
+ * Revision 1.23 2005/01/14 10:12:17 starvik
+ * KGDB on separate port.
+ * Console fixes from 2.4.
+ *
+ * Revision 1.22 2005/01/11 16:06:13 starvik
+ * typo
+ *
+ * Revision 1.21 2005/01/11 13:49:14 starvik
+ * Added raw_printk to be used where we don't trust the console.
+ *
+ * Revision 1.20 2004/12/27 11:18:32 starvik
+ * Merge of Linux 2.6.10 (not functional yet).
+ *
+ * Revision 1.19 2004/10/21 07:26:16 starvik
+ * Made it possible to specify console settings on kernel command line.
+ *
+ * Revision 1.18 2004/10/19 13:07:37 starvik
+ * Merge of Linux 2.6.9
+ *
+ * Revision 1.17 2004/09/29 10:33:46 starvik
+ * Resolved a dealock when printing debug from kernel.
+ *
+ * Revision 1.16 2004/08/24 06:12:19 starvik
+ * Whitespace cleanup
+ *
+ * Revision 1.15 2004/08/16 12:37:19 starvik
+ * Merge of Linux 2.6.8
+ *
+ * Revision 1.14 2004/05/17 13:11:29 starvik
+ * Disable DMA until real serial driver is up
+ *
+ * Revision 1.13 2004/05/14 07:58:01 starvik
+ * Merge of changes from 2.4
+ *
+ * Revision 1.12 2003/09/11 07:29:49 starvik
+ * Merge of Linux 2.6.0-test5
+ *
* Revision 1.11 2003/07/07 09:53:36 starvik
* Revert all the 2.5.74 merge changes to make the console work again
*
*
*/
-#include <linux/config.h>
#include <linux/console.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/delay.h>
-
+#include <linux/tty.h>
#include <asm/system.h>
#include <asm/arch/svinto.h>
#include <asm/io.h> /* Get SIMCOUT. */
-/* Which serial-port is our debug port ? */
-
-#if defined(CONFIG_ETRAX_DEBUG_PORT0) || defined(CONFIG_ETRAX_DEBUG_PORT_NULL)
-#define DEBUG_PORT_IDX 0
-#define DEBUG_OCMD R_DMA_CH6_CMD
-#define DEBUG_FIRST R_DMA_CH6_FIRST
-#define DEBUG_OCLRINT R_DMA_CH6_CLR_INTR
-#define DEBUG_STATUS R_DMA_CH6_STATUS
-#define DEBUG_READ R_SERIAL0_READ
-#define DEBUG_WRITE R_SERIAL0_TR_DATA
-#define DEBUG_TR_CTRL R_SERIAL0_TR_CTRL
-#define DEBUG_REC_CTRL R_SERIAL0_REC_CTRL
-#define DEBUG_IRQ IO_STATE(R_IRQ_MASK1_SET, ser0_data, set)
-#define DEBUG_DMA_IRQ_CLR IO_STATE(R_IRQ_MASK2_CLR, dma6_descr, clr)
-#endif
+struct dbg_port
+{
+ unsigned int index;
+ const volatile unsigned* read;
+ volatile char* write;
+ volatile unsigned* xoff;
+ volatile char* baud;
+ volatile char* tr_ctrl;
+ volatile char* rec_ctrl;
+ unsigned long irq;
+ unsigned int started;
+ unsigned long baudrate;
+ unsigned char parity;
+ unsigned int bits;
+};
-#ifdef CONFIG_ETRAX_DEBUG_PORT1
-#define DEBUG_PORT_IDX 1
-#define DEBUG_OCMD R_DMA_CH8_CMD
-#define DEBUG_FIRST R_DMA_CH8_FIRST
-#define DEBUG_OCLRINT R_DMA_CH8_CLR_INTR
-#define DEBUG_STATUS R_DMA_CH8_STATUS
-#define DEBUG_READ R_SERIAL1_READ
-#define DEBUG_WRITE R_SERIAL1_TR_DATA
-#define DEBUG_TR_CTRL R_SERIAL1_TR_CTRL
-#define DEBUG_REC_CTRL R_SERIAL1_REC_CTRL
-#define DEBUG_IRQ IO_STATE(R_IRQ_MASK1_SET, ser1_data, set)
-#define DEBUG_DMA_IRQ_CLR IO_STATE(R_IRQ_MASK2_CLR, dma8_descr, clr)
-#endif
+struct dbg_port ports[]=
+{
+ {
+ 0,
+ R_SERIAL0_READ,
+ R_SERIAL0_TR_DATA,
+ R_SERIAL0_XOFF,
+ R_SERIAL0_BAUD,
+ R_SERIAL0_TR_CTRL,
+ R_SERIAL0_REC_CTRL,
+ IO_STATE(R_IRQ_MASK1_SET, ser0_data, set),
+ 0,
+ 115200,
+ 'N',
+ 8
+ },
+ {
+ 1,
+ R_SERIAL1_READ,
+ R_SERIAL1_TR_DATA,
+ R_SERIAL1_XOFF,
+ R_SERIAL1_BAUD,
+ R_SERIAL1_TR_CTRL,
+ R_SERIAL1_REC_CTRL,
+ IO_STATE(R_IRQ_MASK1_SET, ser1_data, set),
+ 0,
+ 115200,
+ 'N',
+ 8
+ },
+ {
+ 2,
+ R_SERIAL2_READ,
+ R_SERIAL2_TR_DATA,
+ R_SERIAL2_XOFF,
+ R_SERIAL2_BAUD,
+ R_SERIAL2_TR_CTRL,
+ R_SERIAL2_REC_CTRL,
+ IO_STATE(R_IRQ_MASK1_SET, ser2_data, set),
+ 0,
+ 115200,
+ 'N',
+ 8
+ },
+ {
+ 3,
+ R_SERIAL3_READ,
+ R_SERIAL3_TR_DATA,
+ R_SERIAL3_XOFF,
+ R_SERIAL3_BAUD,
+ R_SERIAL3_TR_CTRL,
+ R_SERIAL3_REC_CTRL,
+ IO_STATE(R_IRQ_MASK1_SET, ser3_data, set),
+ 0,
+ 115200,
+ 'N',
+ 8
+ }
+};
-#ifdef CONFIG_ETRAX_DEBUG_PORT2
-#define DEBUG_PORT_IDX 2
-#define DEBUG_OCMD R_DMA_CH2_CMD
-#define DEBUG_FIRST R_DMA_CH2_FIRST
-#define DEBUG_OCLRINT R_DMA_CH2_CLR_INTR
-#define DEBUG_STATUS R_DMA_CH2_STATUS
-#define DEBUG_READ R_SERIAL2_READ
-#define DEBUG_WRITE R_SERIAL2_TR_DATA
-#define DEBUG_TR_CTRL R_SERIAL2_TR_CTRL
-#define DEBUG_REC_CTRL R_SERIAL2_REC_CTRL
-#define DEBUG_IRQ IO_STATE(R_IRQ_MASK1_SET, ser2_data, set)
-#define DEBUG_DMA_IRQ_CLR IO_STATE(R_IRQ_MASK2_CLR, dma2_descr, clr)
+extern struct tty_driver *serial_driver;
+
+struct dbg_port* port =
+#if defined(CONFIG_ETRAX_DEBUG_PORT0)
+ &ports[0];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
+ &ports[1];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
+ &ports[2];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
+ &ports[3];
+#else
+ NULL;
#endif
-#ifdef CONFIG_ETRAX_DEBUG_PORT3
-#define DEBUG_PORT_IDX 3
-#define DEBUG_OCMD R_DMA_CH4_CMD
-#define DEBUG_FIRST R_DMA_CH4_FIRST
-#define DEBUG_OCLRINT R_DMA_CH4_CLR_INTR
-#define DEBUG_STATUS R_DMA_CH4_STATUS
-#define DEBUG_READ R_SERIAL3_READ
-#define DEBUG_WRITE R_SERIAL3_TR_DATA
-#define DEBUG_TR_CTRL R_SERIAL3_TR_CTRL
-#define DEBUG_REC_CTRL R_SERIAL3_REC_CTRL
-#define DEBUG_IRQ IO_STATE(R_IRQ_MASK1_SET, ser3_data, set)
-#define DEBUG_DMA_IRQ_CLR IO_STATE(R_IRQ_MASK2_CLR, dma4_descr, clr)
+static struct dbg_port* kgdb_port =
+#if defined(CONFIG_ETRAX_KGDB_PORT0)
+ &ports[0];
+#elif defined(CONFIG_ETRAX_KGDB_PORT1)
+ &ports[1];
+#elif defined(CONFIG_ETRAX_KGDB_PORT2)
+ &ports[2];
+#elif defined(CONFIG_ETRAX_KGDB_PORT3)
+ &ports[3];
+#else
+ NULL;
#endif
-#define MIN_SIZE 32 /* Size that triggers the FIFO to flush characters to interface */
-
-/* Write a string of count length to the console (debug port) using DMA, polled
- * for completion. Interrupts are disabled during the whole process. Some
- * caution needs to be taken to not interfere with ttyS business on this port.
- */
-
-static void
-console_write(struct console *co, const char *buf, unsigned int len)
+static void
+start_port(struct dbg_port* p)
{
+ unsigned long rec_ctrl = 0;
+ unsigned long tr_ctrl = 0;
- static struct etrax_dma_descr descr;
- static struct etrax_dma_descr descr2;
- static char tmp_buf[MIN_SIZE];
- static int tmp_size = 0;
-
- unsigned long flags;
-
-#ifdef CONFIG_ETRAX_DEBUG_PORT_NULL
- /* no debug printout at all */
- return;
-#endif
-
-#ifdef CONFIG_SVINTO_SIM
- /* no use to simulate the serial debug output */
- SIMCOUT(buf,len);
- return;
-#endif
-
- local_save_flags(flags);
- local_irq_disable();
-
-#ifdef CONFIG_ETRAX_KGDB
- /* kgdb needs to output debug info using the gdb protocol */
- putDebugString(buf, len);
- local_irq_restore(flags);
- return;
-#endif
+ if (!p)
+ return;
- /* To make this work together with the real serial port driver
- * we have to make sure that everything is flushed when we leave
- * here. The following steps are made to assure this:
- * 1. Wait until DMA stops, FIFO is empty and serial port pipeline empty.
- * 2. Write at least half the FIFO to trigger flush to serial port.
- * 3. Wait until DMA stops, FIFO is empty and serial port pipeline empty.
- */
+ if (p->started)
+ return;
+ p->started = 1;
- /* Do we have enough characters to make the DMA/FIFO happy? */
- if (tmp_size + len < MIN_SIZE)
+ if (p->index == 0)
{
- int size = min((int)(MIN_SIZE - tmp_size),(int)len);
- memcpy(&tmp_buf[tmp_size], buf, size);
- tmp_size += size;
- len -= size;
-
- /* Pad with space if complete line */
- if (tmp_buf[tmp_size-1] == '\n')
- {
- memset(&tmp_buf[tmp_size-1], ' ', MIN_SIZE - tmp_size);
- tmp_buf[MIN_SIZE - 1] = '\n';
- tmp_size = MIN_SIZE;
- len = 0;
- }
- else
- {
- /* Wait for more characters */
- local_irq_restore(flags);
- return;
- }
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma6);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma6, unused);
+ }
+ else if (p->index == 1)
+ {
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma8);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma8, usb);
+ }
+ else if (p->index == 2)
+ {
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma2);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma2, par0);
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma3);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma3, par0);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser2, select);
+ }
+ else
+ {
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma4);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma4, par1);
+ genconfig_shadow &= ~IO_MASK(R_GEN_CONFIG, dma5);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, dma5, par1);
+ genconfig_shadow |= IO_STATE(R_GEN_CONFIG, ser3, select);
}
- /* make sure the transmitter is enabled.
- * NOTE: this overrides any setting done in ttySx, to 8N1, no auto-CTS.
- * in the future, move the tr/rec_ctrl shadows from etrax100ser.c to
- * shadows.c and use it here as well...
- */
+ *R_GEN_CONFIG = genconfig_shadow;
- *DEBUG_TR_CTRL = 0x40;
- while(*DEBUG_OCMD & 7); /* Until DMA is not running */
- while(*DEBUG_STATUS & 0x7f); /* wait until output FIFO is empty as well */
- udelay(200); /* Wait for last two characters to leave the serial transmitter */
+ *p->xoff =
+ IO_STATE(R_SERIAL0_XOFF, tx_stop, enable) |
+ IO_STATE(R_SERIAL0_XOFF, auto_xoff, disable) |
+ IO_FIELD(R_SERIAL0_XOFF, xoff_char, 0);
- if (tmp_size)
+ switch (p->baudrate)
+ {
+ case 0:
+ case 115200:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
+ break;
+ case 1200:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c1200Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c1200Hz);
+ break;
+ case 2400:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c2400Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c2400Hz);
+ break;
+ case 4800:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c4800Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c4800Hz);
+ break;
+ case 9600:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c9600Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c9600Hz);
+ break;
+ case 19200:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c19k2Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c19k2Hz);
+ break;
+ case 38400:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c38k4Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c38k4Hz);
+ break;
+ case 57600:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c57k6Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c57k6Hz);
+ break;
+ default:
+ *p->baud =
+ IO_STATE(R_SERIAL0_BAUD, tr_baud, c115k2Hz) |
+ IO_STATE(R_SERIAL0_BAUD, rec_baud, c115k2Hz);
+ break;
+ }
+
+ if (p->parity == 'E') {
+ rec_ctrl =
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
+ tr_ctrl =
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
+ } else if (p->parity == 'O') {
+ rec_ctrl =
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par, odd) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, enable);
+ tr_ctrl =
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par, odd) |
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, enable);
+ } else {
+ rec_ctrl =
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par, even) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_par_en, disable);
+ tr_ctrl =
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par, even) |
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_par_en, disable);
+ }
+ if (p->bits == 7)
{
- descr.ctrl = len ? 0 : d_eop | d_wait | d_eol;
- descr.sw_len = tmp_size;
- descr.buf = virt_to_phys(tmp_buf);
- descr.next = virt_to_phys(&descr2);
- descr2.ctrl = d_eop | d_wait | d_eol;
- descr2.sw_len = len;
- descr2.buf = virt_to_phys((char*)buf);
+ rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_7bit);
+ tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_7bit);
}
else
{
- descr.ctrl = d_eop | d_wait | d_eol;
- descr.sw_len = len;
- descr.buf = virt_to_phys((char*)buf);
+ rec_ctrl |= IO_STATE(R_SERIAL0_REC_CTRL, rec_bitnr, rec_8bit);
+ tr_ctrl |= IO_STATE(R_SERIAL0_TR_CTRL, tr_bitnr, tr_8bit);
}
- *DEBUG_FIRST = virt_to_phys(&descr); /* write to R_DMAx_FIRST */
- *DEBUG_OCMD = 1; /* dma command start -> R_DMAx_CMD */
-
- /* wait until the output dma channel is ready again */
- while(*DEBUG_OCMD & 7);
- while(*DEBUG_STATUS & 0x7f);
- udelay(200);
+ *p->rec_ctrl =
+ IO_STATE(R_SERIAL0_REC_CTRL, dma_err, stop) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rts_, active) |
+ IO_STATE(R_SERIAL0_REC_CTRL, sampling, middle) |
+ IO_STATE(R_SERIAL0_REC_CTRL, rec_stick_par, normal) |
+ rec_ctrl;
+
+ *p->tr_ctrl =
+ IO_FIELD(R_SERIAL0_TR_CTRL, txd, 0) |
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_enable, enable) |
+ IO_STATE(R_SERIAL0_TR_CTRL, auto_cts, disabled) |
+ IO_STATE(R_SERIAL0_TR_CTRL, stop_bits, one_bit) |
+ IO_STATE(R_SERIAL0_TR_CTRL, tr_stick_par, normal) |
+ tr_ctrl;
+}
- tmp_size = 0;
+static void
+console_write_direct(struct console *co, const char *buf, unsigned int len)
+{
+ int i;
+ unsigned long flags;
+ local_irq_save(flags);
+
+ if (!port)
+ return;
+
+ /* Send data */
+ for (i = 0; i < len; i++) {
+ /* LF -> CRLF */
+ if (buf[i] == '\n') {
+ while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
+ ;
+ *port->write = '\r';
+ }
+ /* Wait until transmitter is ready and send.*/
+ while (!(*port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
+ ;
+ *port->write = buf[i];
+ }
local_irq_restore(flags);
}
+int raw_printk(const char *fmt, ...)
+{
+ static char buf[1024];
+ int printed_len;
+ static int first = 1;
+ if (first) {
+ /* Force reinitialization of the port to get manual mode. */
+ port->started = 0;
+ start_port(port);
+ first = 0;
+ }
+ va_list args;
+ va_start(args, fmt);
+ printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
+ va_end(args);
+ console_write_direct(NULL, buf, strlen(buf));
+ return printed_len;
+}
+
+static void
+console_write(struct console *co, const char *buf, unsigned int len)
+{
+ if (!port)
+ return;
+
+#ifdef CONFIG_SVINTO_SIM
+ /* no use to simulate the serial debug output */
+ SIMCOUT(buf, len);
+ return;
+#endif
+
+ console_write_direct(co, buf, len);
+}
+
/* legacy function */
void
getDebugChar(void)
{
unsigned long readval;
-
+
+ if (!kgdb_port)
+ return 0;
+
do {
- readval = *DEBUG_READ;
- } while(!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
+ readval = *kgdb_port->read;
+ } while (!(readval & IO_MASK(R_SERIAL0_READ, data_avail)));
return (readval & IO_MASK(R_SERIAL0_READ, data_in));
}
void
putDebugChar(int val)
{
- while(!(*DEBUG_READ & IO_MASK(R_SERIAL0_READ, tr_ready))) ;
-;
- *DEBUG_WRITE = val;
+ if (!kgdb_port)
+ return;
+
+ while (!(*kgdb_port->read & IO_MASK(R_SERIAL0_READ, tr_ready)))
+ ;
+ *kgdb_port->write = val;
}
/* Enable irq for receiving chars on the debug port, used by kgdb */
void
enableDebugIRQ(void)
{
- *R_IRQ_MASK1_SET = DEBUG_IRQ;
+ if (!kgdb_port)
+ return;
+
+ *R_IRQ_MASK1_SET = kgdb_port->irq;
/* use R_VECT_MASK directly, since we really bypass Linux normal
* IRQ handling in kgdb anyway, we don't need to use enable_irq
*/
*R_VECT_MASK_SET = IO_STATE(R_VECT_MASK_SET, serial, set);
- *DEBUG_REC_CTRL = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
+ *kgdb_port->rec_ctrl = IO_STATE(R_SERIAL0_REC_CTRL, rec_enable, enable);
}
-static kdev_t
-console_device(struct console *c)
+static int __init
+console_setup(struct console *co, char *options)
{
- return mk_kdev(TTY_MAJOR, 64 + c->index);
+ char* s;
+
+ if (options) {
+ port = &ports[co->index];
+ port->baudrate = 115200;
+ port->parity = 'N';
+ port->bits = 8;
+ port->baudrate = simple_strtoul(options, NULL, 10);
+ s = options;
+ while(*s >= '0' && *s <= '9')
+ s++;
+ if (*s) port->parity = *s++;
+ if (*s) port->bits = *s++ - '0';
+ port->started = 0;
+ start_port(0);
+ }
+ return 0;
}
-static int __init
-console_setup(struct console *co, char *options)
+/* This is a dummy serial device that throws away anything written to it.
+ * This is used when no debug output is wanted.
+ */
+static struct tty_driver dummy_driver;
+
+static int dummy_open(struct tty_struct *tty, struct file * filp)
{
- return 0;
+ return 0;
+}
+
+static void dummy_close(struct tty_struct *tty, struct file * filp)
+{
+}
+
+static int dummy_write(struct tty_struct * tty,
+ const unsigned char *buf, int count)
+{
+ return count;
+}
+
+static int
+dummy_write_room(struct tty_struct *tty)
+{
+ return 8192;
+}
+
+void __init
+init_dummy_console(void)
+{
+ memset(&dummy_driver, 0, sizeof(struct tty_driver));
+ dummy_driver.driver_name = "serial";
+ dummy_driver.name = "ttyS";
+ dummy_driver.major = TTY_MAJOR;
+ dummy_driver.minor_start = 68;
+ dummy_driver.num = 1; /* etrax100 has 4 serial ports */
+ dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
+ dummy_driver.subtype = SERIAL_TYPE_NORMAL;
+ dummy_driver.init_termios = tty_std_termios;
+ dummy_driver.init_termios.c_cflag =
+ B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
+ dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+
+ dummy_driver.open = dummy_open;
+ dummy_driver.close = dummy_close;
+ dummy_driver.write = dummy_write;
+ dummy_driver.write_room = dummy_write_room;
+ if (tty_register_driver(&dummy_driver))
+ panic("Couldn't register dummy serial driver\n");
+}
+
+static struct tty_driver*
+etrax_console_device(struct console* co, int *index)
+{
+ if (port)
+ *index = port->index;
+ return port ? serial_driver : &dummy_driver;
}
static struct console sercons = {
- .name = "ttyS",
- .write = console_write,
- .read = NULL,
- .device = console_device,
- .unblank = NULL,
- .setup = console_setup,
- .flags = CON_PRINTBUFFER,
- .index = DEBUG_PORT_IDX,
- .cflag = 0,
- .next = NULL
+ name : "ttyS",
+ write: console_write,
+ read : NULL,
+ device : etrax_console_device,
+ unblank : NULL,
+ setup : console_setup,
+ flags : CON_PRINTBUFFER,
+ index : -1,
+ cflag : 0,
+ next : NULL
+};
+static struct console sercons0 = {
+ name : "ttyS",
+ write: console_write,
+ read : NULL,
+ device : etrax_console_device,
+ unblank : NULL,
+ setup : console_setup,
+ flags : CON_PRINTBUFFER,
+ index : 0,
+ cflag : 0,
+ next : NULL
};
+static struct console sercons1 = {
+ name : "ttyS",
+ write: console_write,
+ read : NULL,
+ device : etrax_console_device,
+ unblank : NULL,
+ setup : console_setup,
+ flags : CON_PRINTBUFFER,
+ index : 1,
+ cflag : 0,
+ next : NULL
+};
+static struct console sercons2 = {
+ name : "ttyS",
+ write: console_write,
+ read : NULL,
+ device : etrax_console_device,
+ unblank : NULL,
+ setup : console_setup,
+ flags : CON_PRINTBUFFER,
+ index : 2,
+ cflag : 0,
+ next : NULL
+};
+static struct console sercons3 = {
+ name : "ttyS",
+ write: console_write,
+ read : NULL,
+ device : etrax_console_device,
+ unblank : NULL,
+ setup : console_setup,
+ flags : CON_PRINTBUFFER,
+ index : 3,
+ cflag : 0,
+ next : NULL
+};
/*
* Register console (for printk's etc)
*/
-void __init
+int __init
init_etrax_debug(void)
{
+ static int first = 1;
+
+ if (!first) {
+ unregister_console(&sercons);
+ register_console(&sercons0);
+ register_console(&sercons1);
+ register_console(&sercons2);
+ register_console(&sercons3);
+ init_dummy_console();
+ return 0;
+ }
+
+ first = 0;
register_console(&sercons);
+ start_port(port);
+#ifdef CONFIG_ETRAX_KGDB
+ start_port(kgdb_port);
+#endif
+ return 0;
}
+__initcall(init_etrax_debug);
git://git.onelab.eu / linux-2.6.git / blobdiff