11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/arch/m68k/atari/debug.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Atari debugging and serial console stuff 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Assembled of parts of former atari/config.c 97-12-18 by Roman Hodek 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * License. See the file COPYING in the main directory of this archive 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for more details. 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/console.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 18a3b2004a2671455ee7aef1d9aee5a24381999ddbAdrian Bunk#include <linux/module.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/atarihw.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/atariints.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Can be set somewhere, if a SCC master reset has already be done and should 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * not be repeated; used by kgdb */ 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint atari_SCC_reset_done; 26a3b2004a2671455ee7aef1d9aee5a24381999ddbAdrian BunkEXPORT_SYMBOL(atari_SCC_reset_done); 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct console atari_console_driver = { 296ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel .name = "debug", 306ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel .flags = CON_PRINTBUFFER, 316ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel .index = -1, 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 356ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic inline void ata_mfp_out(char c) 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 373d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven while (!(st_mfp.trn_stat & 0x80)) /* wait for tx buf empty */ 386ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel barrier(); 393d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.usart_dta = c; 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 425575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunkstatic void atari_mfp_console_write(struct console *co, const char *str, 435575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunk unsigned int count) 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 456ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (count--) { 466ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (*str == '\n') 476ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_mfp_out('\r'); 486ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_mfp_out(*str++); 496ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 526ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic inline void ata_scc_out(char c) 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 546ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel do { 556ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); 56de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven } while (!(atari_scc.cha_b_ctrl & 0x04)); /* wait for tx buf empty */ 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MFPDELAY(); 58de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven atari_scc.cha_b_data = c; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 615575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunkstatic void atari_scc_console_write(struct console *co, const char *str, 625575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunk unsigned int count) 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 646ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (count--) { 656ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (*str == '\n') 666ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_scc_out('\r'); 676ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_scc_out(*str++); 686ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 716ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic inline void ata_midi_out(char c) 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 736ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (!(acia.mid_ctrl & ACIA_TDRE)) /* wait for tx buf empty */ 746ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel barrier(); 756ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel acia.mid_data = c; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 785575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunkstatic void atari_midi_console_write(struct console *co, const char *str, 795575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunk unsigned int count) 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 816ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (count--) { 826ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (*str == '\n') 836ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_midi_out('\r'); 846ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ata_midi_out(*str++); 856ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 886ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic int ata_par_out(char c) 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 906ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel unsigned char tmp; 916ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* This a some-seconds timeout in case no printer is connected */ 926ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel unsigned long i = loops_per_jiffy > 1 ? loops_per_jiffy : 10000000/HZ; 936ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 943d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven while ((st_mfp.par_dt_reg & 1) && --i) /* wait for BUSY == L */ 956ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel ; 966ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (!i) 976ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel return 0; 986ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 996ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.rd_data_reg_sel = 15; /* select port B */ 1006ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = c; /* put char onto port */ 1016ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.rd_data_reg_sel = 14; /* select port A */ 1026ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel tmp = sound_ym.rd_data_reg_sel; 1036ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = tmp & ~0x20; /* set strobe L */ 1046ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); /* wait a bit */ 1056ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = tmp | 0x20; /* set strobe H */ 1066ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel return 1; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1096ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic void atari_par_console_write(struct console *co, const char *str, 1106ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel unsigned int count) 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1126ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int printer_present = 1; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1146ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (!printer_present) 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 1166ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 1176ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (count--) { 1186ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (*str == '\n') { 1196ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (!ata_par_out('\r')) { 1206ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel printer_present = 0; 1216ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel return; 1226ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 1236ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 1246ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (!ata_par_out(*str++)) { 1256ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel printer_present = 0; 1266ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel return; 1276ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1315575d0a3c9676b2886adad67dd4b2ac126a49f1fAdrian Bunk#if 0 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint atari_mfp_console_wait_key(struct console *co) 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1343d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven while (!(st_mfp.rcv_stat & 0x80)) /* wait for rx buf filled */ 1356ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel barrier(); 1363d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven return st_mfp.usart_dta; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint atari_scc_console_wait_key(struct console *co) 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1416ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel do { 1426ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); 143de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven } while (!(atari_scc.cha_b_ctrl & 0x01)); /* wait for rx buf filled */ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds MFPDELAY(); 145de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven return atari_scc.cha_b_data; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint atari_midi_console_wait_key(struct console *co) 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1506ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel while (!(acia.mid_ctrl & ACIA_RDRF)) /* wait for rx buf filled */ 1516ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel barrier(); 1526ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel return acia.mid_data; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1566ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel/* 1576ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel * The following two functions do a quick'n'dirty initialization of the MFP or 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SCC serial ports. They're used by the debugging interface, kgdb, and the 1596ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel * serial console code. 1606ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel */ 1616ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic void __init atari_init_mfp_port(int cflag) 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1636ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* 1646ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel * timer values for 1200...115200 bps; > 38400 select 110, 134, or 150 1656ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel * bps, resp., and work only correct if there's a RSVE or RSSPEED 1666ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel */ 1676ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int baud_table[9] = { 16, 11, 8, 4, 2, 1, 175, 143, 128 }; 1686ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int baud = cflag & CBAUD; 1696ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int parity = (cflag & PARENB) ? ((cflag & PARODD) ? 0x04 : 0x06) : 0; 1706ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int csize = ((cflag & CSIZE) == CS7) ? 0x20 : 0x00; 1716ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 1726ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (cflag & CBAUDEX) 1736ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud += B38400; 1746ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (baud < B1200 || baud > B38400+2) 1756ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud = B9600; /* use default 9600bps for non-implemented rates */ 1766ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud -= B1200; /* baud_table[] starts at 1200bps */ 1776ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 1783d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.trn_stat &= ~0x01; /* disable TX */ 1793d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.usart_ctr = parity | csize | 0x88; /* 1:16 clk mode, 1 stop bit */ 1803d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.tim_ct_cd &= 0x70; /* stop timer D */ 1813d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.tim_dt_d = baud_table[baud]; 1823d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.tim_ct_cd |= 0x01; /* start timer D, 1:4 */ 1833d92e8f3ae9ba21cac30370eb254ed9dc20df043Geert Uytterhoeven st_mfp.trn_stat |= 0x01; /* enable TX */ 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1866ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel#define SCC_WRITE(reg, val) \ 1876ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel do { \ 188de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven atari_scc.cha_b_ctrl = (reg); \ 1896ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); \ 190de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven atari_scc.cha_b_ctrl = (val); \ 1916ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); \ 1926ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } while (0) 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* loops_per_jiffy isn't initialized yet, so we can't use udelay(). This does a 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * delay of ~ 60us. */ 1966ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel#define LONG_DELAY() \ 1976ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel do { \ 1986ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int i; \ 1996ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel for (i = 100; i > 0; --i) \ 2006ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel MFPDELAY(); \ 2016ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } while (0) 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2036ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic void __init atari_init_scc_port(int cflag) 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2056ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int clksrc_table[9] = 2066ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* reg 11: 0x50 = BRG, 0x00 = RTxC, 0x28 = TRxC */ 2076ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel { 0x50, 0x50, 0x50, 0x50, 0x50, 0x50, 0x50, 0x00, 0x00 }; 2086ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int brgsrc_table[9] = 2096ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* reg 14: 0 = RTxC, 2 = PCLK */ 2106ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel { 2, 2, 2, 2, 2, 2, 0, 2, 2 }; 2116ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int clkmode_table[9] = 2126ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* reg 4: 0x40 = x16, 0x80 = x32, 0xc0 = x64 */ 2136ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel { 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0xc0, 0x80 }; 2146ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel static int div_table[9] = 2156ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* reg12 (BRG low) */ 2166ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel { 208, 138, 103, 50, 24, 11, 1, 0, 0 }; 2176ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2186ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int baud = cflag & CBAUD; 2196ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int clksrc, clkmode, div, reg3, reg5; 2206ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2216ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (cflag & CBAUDEX) 2226ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud += B38400; 2236ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (baud < B1200 || baud > B38400+2) 2246ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud = B9600; /* use default 9600bps for non-implemented rates */ 2256ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud -= B1200; /* tables starts at 1200bps */ 2266ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2276ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel clksrc = clksrc_table[baud]; 2286ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel clkmode = clkmode_table[baud]; 2296ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel div = div_table[baud]; 2306ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (ATARIHW_PRESENT(TT_MFP) && baud >= 6) { 2316ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* special treatment for TT, where rates >= 38400 are done via TRxC */ 2326ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel clksrc = 0x28; /* TRxC */ 2336ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel clkmode = baud == 6 ? 0xc0 : 2346ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud == 7 ? 0x80 : /* really 76800bps */ 2356ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 0x40; /* really 153600bps */ 2366ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel div = 0; 2376ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 2386ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2396ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel reg3 = (cflag & CSIZE) == CS8 ? 0xc0 : 0x40; 2406ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel reg5 = (cflag & CSIZE) == CS8 ? 0x60 : 0x20 | 0x82 /* assert DTR/RTS */; 2416ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 242de339e4b792aed799bec23251e83f594ac44ae04Geert Uytterhoeven (void)atari_scc.cha_b_ctrl; /* reset reg pointer */ 2436ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(9, 0xc0); /* reset */ 2446ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel LONG_DELAY(); /* extra delay after WR9 access */ 2456ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(4, (cflag & PARENB) ? ((cflag & PARODD) ? 0x01 : 0x03) 2466ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel : 0 | 0x04 /* 1 stopbit */ | clkmode); 2476ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(3, reg3); 2486ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(5, reg5); 2496ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(9, 0); /* no interrupts */ 2506ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel LONG_DELAY(); /* extra delay after WR9 access */ 2516ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(10, 0); /* NRZ mode */ 2526ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(11, clksrc); /* main clock source */ 2536ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(12, div); /* BRG value */ 2546ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(13, 0); /* BRG high byte */ 2556ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(14, brgsrc_table[baud]); 2566ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(14, brgsrc_table[baud] | (div ? 1 : 0)); 2576ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(3, reg3 | 1); 2586ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel SCC_WRITE(5, reg5 | 8); 2596ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2606ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_SCC_reset_done = 1; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2636ff5801acbb643e81d3420ac0f37c96089309063Roman Zippelstatic void __init atari_init_midi_port(int cflag) 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2656ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int baud = cflag & CBAUD; 2666ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int csize = ((cflag & CSIZE) == CS8) ? 0x10 : 0x00; 2676ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* warning 7N1 isn't possible! (instead 7O2 is used...) */ 2686ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int parity = (cflag & PARENB) ? ((cflag & PARODD) ? 0x0c : 0x08) : 0x04; 2696ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel int div; 2706ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2716ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* 4800 selects 7812.5, 115200 selects 500000, all other (incl. 9600 as 2726ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel * default) the standard MIDI speed 31250. */ 2736ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (cflag & CBAUDEX) 2746ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel baud += B38400; 2756ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (baud == B4800) 2766ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel div = ACIA_DIV64; /* really 7812.5 bps */ 2776ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel else if (baud == B38400+2 /* 115200 */) 2786ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel div = ACIA_DIV1; /* really 500 kbps (does that work??) */ 2796ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel else 2806ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel div = ACIA_DIV16; /* 31250 bps, standard for MIDI */ 2816ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel 2826ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* RTS low, ints disabled */ 2836ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel acia.mid_ctrl = div | csize | parity | 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((atari_switches & ATARI_SWITCH_MIDI) ? 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ACIA_RHTID : ACIA_RLTID); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 288d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippelstatic int __init atari_debug_setup(char *arg) 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 290d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel if (!MACH_IS_ATARI) 291d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel return 0; 292d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel 293d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel if (!strcmp(arg, "ser")) 2946ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* defaults to ser2 for a Falcon and ser1 otherwise */ 295d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel arg = MACH_IS_FALCON ? "ser2" : "ser1"; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 297d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel if (!strcmp(arg, "ser1")) { 2986ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* ST-MFP Modem1 serial port */ 2996ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_init_mfp_port(B9600|CS8); 3006ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_console_driver.write = atari_mfp_console_write; 301d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel } else if (!strcmp(arg, "ser2")) { 3026ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* SCC Modem2 serial port */ 3036ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_init_scc_port(B9600|CS8); 3046ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_console_driver.write = atari_scc_console_write; 305d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel } else if (!strcmp(arg, "midi")) { 3066ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* MIDI port */ 3076ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_init_midi_port(B9600|CS8); 3086ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_console_driver.write = atari_midi_console_write; 309d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel } else if (!strcmp(arg, "par")) { 3106ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel /* parallel printer */ 3116ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_turnoff_irq(IRQ_MFP_BUSY); /* avoid ints */ 3126ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.rd_data_reg_sel = 7; /* select mixer control */ 3136ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = 0xff; /* sound off, ports are output */ 3146ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.rd_data_reg_sel = 15; /* select port B */ 3156ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = 0; /* no char */ 3166ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.rd_data_reg_sel = 14; /* select port A */ 3176ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel sound_ym.wd_data = sound_ym.rd_data_reg_sel | 0x20; /* strobe H */ 3186ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel atari_console_driver.write = atari_par_console_write; 3196ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel } 3206ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel if (atari_console_driver.write) 3216ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel register_console(&atari_console_driver); 322d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel 323d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel return 0; 3246ff5801acbb643e81d3420ac0f37c96089309063Roman Zippel} 325d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippel 326d6713b4091a99fa2af2fabdcd2f3fb97f32ecf2eRoman Zippelearly_param("debug", atari_debug_setup); 327