CRIS v32: Update debugport.
- Shorten include paths to machine dependent headers. - Add support for fifth serial port. - Remove CONFIG_ETRAXFS_SIM and CONFIG_ETRAX_DEBUG_PORT_NULL, no longer used. - Remove raw_printk and stupid_debug hack, no longer needed. - Remove dummy console stuff, no longer needed. - Correct some register type names. - Correct some whitespace errors and formatting.
This commit is contained in:
Jesper Nilsson
parent
3f50c0673c
commit
8226410262
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@ -4,17 +4,12 @@
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#include <linux/console.h>
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#include <linux/init.h>
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#include <linux/major.h>
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#include <linux/delay.h>
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#include <linux/tty.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/arch/hwregs/ser_defs.h>
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#include <asm/arch/hwregs/dma_defs.h>
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#include <asm/arch/pinmux.h>
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#include <asm/irq.h>
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#include <asm/arch/hwregs/intr_vect_defs.h>
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#include <hwregs/reg_rdwr.h>
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#include <hwregs/reg_map.h>
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#include <hwregs/ser_defs.h>
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#include <hwregs/dma_defs.h>
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#include <asm/arch/mach/pinmux.h>
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struct dbg_port
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{
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@ -59,45 +54,50 @@ struct dbg_port ports[] =
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115200,
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'N',
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8
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}
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},
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#if CONFIG_ETRAX_SERIAL_PORTS == 5
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{
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4,
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regi_ser4,
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0,
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115200,
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'N',
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8
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},
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#endif
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};
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static struct dbg_port *port =
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#if defined(CONFIG_ETRAX_DEBUG_PORT0)
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&ports[0];
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&ports[0];
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#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
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&ports[1];
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&ports[1];
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#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
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&ports[2];
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&ports[2];
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#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
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&ports[3];
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&ports[3];
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#elif defined(CONFIG_ETRAX_DEBUG_PORT4)
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&ports[4];
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#else
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NULL;
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NULL;
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#endif
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#ifdef CONFIG_ETRAX_KGDB
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static struct dbg_port *kgdb_port =
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#if defined(CONFIG_ETRAX_KGDB_PORT0)
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&ports[0];
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&ports[0];
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#elif defined(CONFIG_ETRAX_KGDB_PORT1)
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&ports[1];
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&ports[1];
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#elif defined(CONFIG_ETRAX_KGDB_PORT2)
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&ports[2];
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&ports[2];
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#elif defined(CONFIG_ETRAX_KGDB_PORT3)
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&ports[3];
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&ports[3];
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#elif defined(CONFIG_ETRAX_KGDB_PORT4)
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&ports[4];
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#else
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NULL;
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NULL;
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#endif
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#endif
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#ifdef CONFIG_ETRAXFS_SIM
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extern void print_str( const char *str );
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static char buffer[1024];
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static char msg[] = "Debug: ";
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static int buffer_pos = sizeof(msg) - 1;
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#endif
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extern struct tty_driver *serial_driver;
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static void
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start_port(struct dbg_port* p)
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{
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@ -114,6 +114,10 @@ start_port(struct dbg_port* p)
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crisv32_pinmux_alloc_fixed(pinmux_ser2);
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else if (p->nbr == 3)
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crisv32_pinmux_alloc_fixed(pinmux_ser3);
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#if CONFIG_ETRAX_SERIAL_PORTS == 5
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else if (p->nbr == 4)
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crisv32_pinmux_alloc_fixed(pinmux_ser4);
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#endif
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/* Set up serial port registers */
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reg_ser_rw_tr_ctrl tr_ctrl = {0};
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@ -156,124 +160,21 @@ start_port(struct dbg_port* p)
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REG_WR (ser, p->instance, rw_rec_ctrl, rec_ctrl);
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}
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/* No debug */
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#ifdef CONFIG_ETRAX_DEBUG_PORT_NULL
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static void
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console_write(struct console *co, const char *buf, unsigned int len)
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{
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return;
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}
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/* Target debug */
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#elif !defined(CONFIG_ETRAXFS_SIM)
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static void
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console_write_direct(struct console *co, const char *buf, unsigned int len)
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{
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int i;
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reg_ser_r_stat_din stat;
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reg_ser_rw_tr_dma_en tr_dma_en, old;
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/* Switch to manual mode */
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tr_dma_en = old = REG_RD (ser, port->instance, rw_tr_dma_en);
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if (tr_dma_en.en == regk_ser_yes) {
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tr_dma_en.en = regk_ser_no;
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REG_WR(ser, port->instance, rw_tr_dma_en, tr_dma_en);
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}
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/* Send data */
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for (i = 0; i < len; i++) {
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/* LF -> CRLF */
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if (buf[i] == '\n') {
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do {
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stat = REG_RD (ser, port->instance, r_stat_din);
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} while (!stat.tr_rdy);
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REG_WR_INT (ser, port->instance, rw_dout, '\r');
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}
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/* Wait until transmitter is ready and send.*/
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do {
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stat = REG_RD (ser, port->instance, r_stat_din);
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} while (!stat.tr_rdy);
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REG_WR_INT (ser, port->instance, rw_dout, buf[i]);
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}
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/* Restore mode */
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if (tr_dma_en.en != old.en)
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REG_WR(ser, port->instance, rw_tr_dma_en, old);
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}
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static void
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console_write(struct console *co, const char *buf, unsigned int len)
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{
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if (!port)
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return;
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console_write_direct(co, buf, len);
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}
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#else
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/* VCS debug */
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static void
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console_write(struct console *co, const char *buf, unsigned int len)
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{
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char* pos;
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pos = memchr(buf, '\n', len);
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if (pos) {
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int l = ++pos - buf;
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memcpy(buffer + buffer_pos, buf, l);
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memcpy(buffer, msg, sizeof(msg) - 1);
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buffer[buffer_pos + l] = '\0';
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print_str(buffer);
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buffer_pos = sizeof(msg) - 1;
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if (pos - buf != len) {
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memcpy(buffer + buffer_pos, pos, len - l);
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buffer_pos += len - l;
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}
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} else {
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memcpy(buffer + buffer_pos, buf, len);
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buffer_pos += len;
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}
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}
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#endif
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int raw_printk(const char *fmt, ...)
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{
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static char buf[1024];
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int printed_len;
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va_list args;
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va_start(args, fmt);
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printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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console_write(NULL, buf, strlen(buf));
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return printed_len;
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}
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void
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stupid_debug(char* buf)
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{
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console_write(NULL, buf, strlen(buf));
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}
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#ifdef CONFIG_ETRAX_KGDB
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/* Use polling to get a single character from the kernel debug port */
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int
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getDebugChar(void)
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{
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reg_ser_rs_status_data stat;
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reg_ser_rs_stat_din stat;
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reg_ser_rw_ack_intr ack_intr = { 0 };
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do {
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stat = REG_RD(ser, kgdb_instance, rs_status_data);
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} while (!stat.data_avail);
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stat = REG_RD(ser, kgdb_port->instance, rs_stat_din);
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} while (!stat.dav);
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/* Ack the data_avail interrupt. */
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ack_intr.data_avail = 1;
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REG_WR(ser, kgdb_instance, rw_ack_intr, ack_intr);
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ack_intr.dav = 1;
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REG_WR(ser, kgdb_port->instance, rw_ack_intr, ack_intr);
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return stat.data;
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}
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@ -282,173 +183,18 @@ getDebugChar(void)
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void
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putDebugChar(int val)
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{
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reg_ser_r_status_data stat;
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reg_ser_r_stat_din stat;
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do {
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stat = REG_RD (ser, kgdb_instance, r_status_data);
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} while (!stat.tr_ready);
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REG_WR (ser, kgdb_instance, rw_data_out, REG_TYPE_CONV(reg_ser_rw_data_out, int, val));
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stat = REG_RD(ser, kgdb_port->instance, r_stat_din);
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} while (!stat.tr_rdy);
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REG_WR_INT(ser, kgdb_port->instance, rw_dout, val);
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}
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#endif /* CONFIG_ETRAX_KGDB */
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static int __init
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console_setup(struct console *co, char *options)
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{
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char* s;
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if (options) {
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port = &ports[co->index];
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port->baudrate = 115200;
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port->parity = 'N';
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port->bits = 8;
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port->baudrate = simple_strtoul(options, NULL, 10);
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s = options;
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while(*s >= '0' && *s <= '9')
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s++;
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if (*s) port->parity = *s++;
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if (*s) port->bits = *s++ - '0';
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port->started = 0;
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start_port(port);
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}
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return 0;
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}
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/* This is a dummy serial device that throws away anything written to it.
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* This is used when no debug output is wanted.
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*/
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static struct tty_driver dummy_driver;
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static int dummy_open(struct tty_struct *tty, struct file * filp)
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{
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return 0;
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}
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static void dummy_close(struct tty_struct *tty, struct file * filp)
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{
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}
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static int dummy_write(struct tty_struct * tty,
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const unsigned char *buf, int count)
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{
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return count;
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}
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static int
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dummy_write_room(struct tty_struct *tty)
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{
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return 8192;
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}
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void __init
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init_dummy_console(void)
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{
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memset(&dummy_driver, 0, sizeof(struct tty_driver));
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dummy_driver.driver_name = "serial";
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dummy_driver.name = "ttyS";
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dummy_driver.major = TTY_MAJOR;
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dummy_driver.minor_start = 68;
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dummy_driver.num = 1; /* etrax100 has 4 serial ports */
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dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
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dummy_driver.subtype = SERIAL_TYPE_NORMAL;
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dummy_driver.init_termios = tty_std_termios;
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dummy_driver.init_termios.c_cflag =
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B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
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dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
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dummy_driver.open = dummy_open;
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dummy_driver.close = dummy_close;
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dummy_driver.write = dummy_write;
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dummy_driver.write_room = dummy_write_room;
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if (tty_register_driver(&dummy_driver))
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panic("Couldn't register dummy serial driver\n");
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}
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static struct tty_driver*
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crisv32_console_device(struct console* co, int *index)
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{
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if (port)
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*index = port->nbr;
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return port ? serial_driver : &dummy_driver;
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}
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static struct console sercons = {
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name : "ttyS",
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write: console_write,
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read : NULL,
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device : crisv32_console_device,
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unblank : NULL,
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setup : console_setup,
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flags : CON_PRINTBUFFER,
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index : -1,
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cflag : 0,
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next : NULL
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};
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static struct console sercons0 = {
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name : "ttyS",
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write: console_write,
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read : NULL,
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device : crisv32_console_device,
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unblank : NULL,
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setup : console_setup,
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flags : CON_PRINTBUFFER,
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index : 0,
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cflag : 0,
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next : NULL
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};
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static struct console sercons1 = {
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name : "ttyS",
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write: console_write,
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read : NULL,
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device : crisv32_console_device,
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unblank : NULL,
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setup : console_setup,
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flags : CON_PRINTBUFFER,
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index : 1,
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cflag : 0,
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next : NULL
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};
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static struct console sercons2 = {
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name : "ttyS",
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write: console_write,
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read : NULL,
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device : crisv32_console_device,
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unblank : NULL,
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setup : console_setup,
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flags : CON_PRINTBUFFER,
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index : 2,
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cflag : 0,
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next : NULL
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};
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static struct console sercons3 = {
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name : "ttyS",
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write: console_write,
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read : NULL,
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device : crisv32_console_device,
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unblank : NULL,
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setup : console_setup,
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flags : CON_PRINTBUFFER,
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index : 3,
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cflag : 0,
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next : NULL
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};
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/* Register console for printk's, etc. */
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int __init
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init_etrax_debug(void)
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{
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static int first = 1;
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if (!first) {
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unregister_console(&sercons);
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register_console(&sercons0);
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register_console(&sercons1);
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register_console(&sercons2);
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register_console(&sercons3);
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init_dummy_console();
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return 0;
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}
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first = 0;
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register_console(&sercons);
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start_port(port);
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#ifdef CONFIG_ETRAX_KGDB
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@ -456,5 +202,3 @@ init_etrax_debug(void)
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#endif /* CONFIG_ETRAX_KGDB */
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return 0;
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}
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__initcall(init_etrax_debug);
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