Date: Mon, 29 Mar 2004 00:07:19 -0800 (PST) From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 49876 for review Message-ID: <200403290807.i2T87JC9069539@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=49876 Change 49876 by marcel@marcel_nfs on 2004/03/29 00:06:41 Add support to sio for being a debug port. This probably breaks alpha. Affected files ... .. //depot/projects/gdb/sys/dev/sio/sio.c#5 edit Differences ... ==== //depot/projects/gdb/sys/dev/sio/sio.c#5 (text+ko) ==== @@ -39,7 +39,8 @@ #include "opt_comconsole.h" #include "opt_compat.h" -#include "opt_ddb.h" +#include "opt_gdb.h" +#include "opt_kdb.h" #include "opt_sio.h" /* @@ -74,9 +75,6 @@ #include <sys/timepps.h> #include <sys/uio.h> #include <sys/cons.h> -#if DDB > 0 -#include <ddb/ddb.h> -#endif #include <isa/isavar.h> @@ -343,8 +341,6 @@ static u_int com_events; /* input chars + weighted output completions */ static Port_t siocniobase; static int siocnunit = -1; -static Port_t siogdbiobase; -static int siogdbunit = -1; static void *sio_slow_ih; static void *sio_fast_ih; static int sio_timeout; @@ -353,6 +349,10 @@ = CALLOUT_HANDLE_INITIALIZER(&sio_timeout_handle); static int sio_numunits; +#ifdef GDB +static Port_t siogdbiobase = 0; +#endif + #ifdef COM_ESP /* XXX configure this properly. */ /* XXX quite broken for new-bus. */ @@ -1172,7 +1172,7 @@ } if (ret) device_printf(dev, "could not activate interrupt\n"); -#if defined(DDB) && (defined(BREAK_TO_DEBUGGER) || \ +#if defined(KDB) && (defined(BREAK_TO_DEBUGGER) || \ defined(ALT_BREAK_TO_DEBUGGER)) /* * Enable interrupts for early break-to-debugger support @@ -1424,7 +1424,7 @@ sio_setreg(com, com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); tp = com->tp; -#if defined(DDB) && (defined(BREAK_TO_DEBUGGER) || \ +#if defined(KDB) && (defined(BREAK_TO_DEBUGGER) || \ defined(ALT_BREAK_TO_DEBUGGER)) /* * Leave interrupts enabled and don't clear DTR if this is the @@ -1800,13 +1800,13 @@ recv_data = 0; else recv_data = inb(com->data_port); -#ifdef DDB +#ifdef KDB #ifdef ALT_BREAK_TO_DEBUGGER if (com->unit == comconsole && db_alt_break(recv_data, &com->alt_brk_state) != 0) - breakpoint(); + kdb_enter("Break sequence on console"); #endif /* ALT_BREAK_TO_DEBUGGER */ -#endif /* DDB */ +#endif /* KDB */ if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { /* * Don't store BI if IGNBRK or FE/PE if IGNPAR. @@ -1821,9 +1821,9 @@ * Note: BI together with FE/PE means just BI. */ if (line_status & LSR_BI) { -#if defined(DDB) && defined(BREAK_TO_DEBUGGER) +#if defined(KDB) && defined(BREAK_TO_DEBUGGER) if (com->unit == comconsole) { - breakpoint(); + kdb_enter("Line break on console"); goto cont; } #endif @@ -2758,9 +2758,6 @@ #ifdef __alpha__ int siocnattach(int port, int speed); -int siogdbattach(int port, int speed); -int siogdbgetc(void); -void siogdbputc(int c); #else static cn_probe_t siocnprobe; static cn_init_t siocninit; @@ -2775,10 +2772,6 @@ siocnputc, NULL); #endif -#if DDB > 0 -static struct consdev gdbconsdev; -#endif - static void siocntxwait(iobase) Port_t iobase; @@ -2979,40 +2972,12 @@ siocniobase = iobase; siocnunit = unit; } - if (COM_DEBUGGER(flags)) { - printf("sio%d: gdb debugging port\n", unit); +#ifdef GDB + if (COM_DEBUGGER(flags)) siogdbiobase = iobase; - siogdbunit = unit; -#if DDB > 0 - siocnset(&gdbconsdev, unit); - gdb_arg = &gdbconsdev; - gdb_getc = siocngetc; - gdb_putc = siocnputc; #endif - } } } -#ifdef __i386__ -#if DDB > 0 - /* - * XXX Ugly Compatability. - * If no gdb port has been specified, set it to be the console - * as some configuration files don't specify the gdb port. - */ - if (gdb_arg == NULL && (boothowto & RB_GDB)) { - printf("Warning: no GDB port specified. Defaulting to sio%d.\n", - siocnunit); - printf("Set flag 0x80 on desired GDB port in your\n"); - printf("configuration file (currently sio only).\n"); - siogdbiobase = siocniobase; - siogdbunit = siocnunit; - siocnset(&gdbconsdev, siocnunit); - gdb_arg = &gdbconsdev; - gdb_getc = siocngetc; - gdb_putc = siocnputc; - } -#endif -#endif } static void @@ -3077,53 +3042,6 @@ return (0); } -int -siogdbattach(port, speed) - int port; - int speed; -{ - int s; - u_char cfcr; - u_int divisor; - struct siocnstate sp; - int unit = 1; /* XXX random value! */ - - siogdbiobase = port; - gdbdefaultrate = speed; - - printf("sio%d: gdb debugging port\n", unit); - siogdbunit = unit; -#if DDB > 0 - siocnset(&gdbconsdev, unit); - gdb_arg = &gdbconsdev; - gdb_getc = siocngetc; - gdb_putc = siocnputc; -#endif - - s = spltty(); - - /* - * Initialize the divisor latch. We can't rely on - * siocnopen() to do this the first time, since it - * avoids writing to the latch if the latch appears - * to have the correct value. Also, if we didn't - * just read the speed from the hardware, then we - * need to set the speed in hardware so that - * switching it later is null. - */ - cfcr = inb(siogdbiobase + com_cfcr); - outb(siogdbiobase + com_cfcr, CFCR_DLAB | cfcr); - divisor = siodivisor(comdefaultrclk, gdbdefaultrate); - outb(siogdbiobase + com_dlbl, divisor & 0xff); - outb(siogdbiobase + com_dlbh, divisor >> 8); - outb(siogdbiobase + com_cfcr, cfcr); - - siocnopen(&sp, siogdbiobase, gdbdefaultrate); - splx(s); - - return (0); -} - #endif static int @@ -3134,13 +3052,17 @@ int s; struct siocnstate sp; speed_t speed; - - if (cd->cn_unit == siocnunit) { + + if (cd != NULL && cd->cn_unit == siocnunit) { iobase = siocniobase; speed = comdefaultrate; } else { +#ifdef GDB iobase = siogdbiobase; speed = gdbdefaultrate; +#else + return (-1); +#endif } s = spltty(); siocnopen(&sp, iobase, speed); @@ -3162,12 +3084,16 @@ struct siocnstate sp; speed_t speed; - if (cd->cn_unit == siocnunit) { + if (cd != NULL && cd->cn_unit == siocnunit) { iobase = siocniobase; speed = comdefaultrate; } else { +#ifdef GDB iobase = siogdbiobase; speed = gdbdefaultrate; +#else + return (-1); +#endif } s = spltty(); siocnopen(&sp, iobase, speed); @@ -3188,12 +3114,16 @@ Port_t iobase; speed_t speed; - if (cd->cn_unit == siocnunit) { + if (cd != NULL && cd->cn_unit == siocnunit) { iobase = siocniobase; speed = comdefaultrate; } else { +#ifdef GDB iobase = siogdbiobase; speed = gdbdefaultrate; +#else + return; +#endif } s = spltty(); need_unlock = 0; @@ -3210,56 +3140,56 @@ splx(s); } -#ifdef __alpha__ -int -siogdbgetc() +/* + * Remote gdb(1) support. + */ + +#if defined(GDB) + +#include <gdb/gdb.h> + +static gdb_probe_f siogdbprobe; +static gdb_init_f siogdbinit; +static gdb_term_f siogdbterm; +static gdb_getc_f siogdbgetc; +static gdb_checkc_f siogdbcheckc; +static gdb_putc_f siogdbputc; + +GDB_DBGPORT(sio, siogdbprobe, siogdbinit, siogdbterm, siogdbcheckc, + siogdbgetc, siogdbputc); + +static int +siogdbprobe(void) { - int c; - Port_t iobase; - speed_t speed; - int s; - struct siocnstate sp; + return ((siogdbiobase != 0) ? 0 : -1); +} - if (siogdbunit == siocnunit) { - iobase = siocniobase; - speed = comdefaultrate; - } else { - iobase = siogdbiobase; - speed = gdbdefaultrate; - } +static void +siogdbinit(void) +{ +} - s = spltty(); - siocnopen(&sp, iobase, speed); - while (!(inb(iobase + com_lsr) & LSR_RXRDY)) - ; - c = inb(iobase + com_data); - siocnclose(&sp, iobase); - splx(s); - return (c); +static void +siogdbterm(void) +{ } -void -siogdbputc(c) - int c; +static void +siogdbputc(int c) { - Port_t iobase; - speed_t speed; - int s; - struct siocnstate sp; + siocnputc(NULL, c); +} - if (siogdbunit == siocnunit) { - iobase = siocniobase; - speed = comdefaultrate; - } else { - iobase = siogdbiobase; - speed = gdbdefaultrate; - } +static int +siogdbcheckc(void) +{ + return (siocncheckc(NULL)); +} - s = spltty(); - siocnopen(&sp, iobase, speed); - siocntxwait(siogdbiobase); - outb(siogdbiobase + com_data, c); - siocnclose(&sp, siogdbiobase); - splx(s); +static int +siogdbgetc(void) +{ + return (siocngetc(NULL)); } + #endif
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