diff options
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/Kconfig | 6 | ||||
| -rw-r--r-- | arch/m68k/configs/mac_defconfig | 2 | ||||
| -rw-r--r-- | arch/m68k/configs/multi_defconfig | 1 | ||||
| -rw-r--r-- | arch/m68k/include/asm/machw.h | 25 | ||||
| -rw-r--r-- | arch/m68k/include/asm/macints.h | 22 | ||||
| -rw-r--r-- | arch/m68k/mac/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68k/mac/config.c | 51 | ||||
| -rw-r--r-- | arch/m68k/mac/debug.c | 365 | ||||
| -rw-r--r-- | arch/m68k/mac/macints.c | 101 | ||||
| -rw-r--r-- | arch/m68k/mac/oss.c | 20 | ||||
| -rw-r--r-- | arch/m68k/mac/via.c | 7 |
11 files changed, 80 insertions, 522 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index ecdc19a299b..b5da298ba61 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -536,10 +536,6 @@ config GVPIOEXT_PLIP Say Y to enable doing IP over the parallel port on your GVP IO-Extender card, N otherwise. -config MAC_SCC - tristate "Macintosh serial support" - depends on MAC - config MAC_HID bool depends on INPUT_ADBHID @@ -595,7 +591,7 @@ config DN_SERIAL config SERIAL_CONSOLE bool "Support for serial port console" - depends on (AMIGA || ATARI || MAC || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || MAC_SCC=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL) + depends on (AMIGA || ATARI || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL) ---help--- If you say Y here, it will be possible to use a serial port as the system console (the system console is the device which receives all diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig index 3cbbf880a9e..c5f3232ff91 100644 --- a/arch/m68k/configs/mac_defconfig +++ b/arch/m68k/configs/mac_defconfig @@ -839,9 +839,7 @@ CONFIG_HIDRAW=y # # Character devices # -CONFIG_MAC_SCC=y CONFIG_MAC_HID=y -CONFIG_SERIAL_CONSOLE=y # # File systems diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig index 8a2371933be..a8bfa3fa71c 100644 --- a/arch/m68k/configs/multi_defconfig +++ b/arch/m68k/configs/multi_defconfig @@ -987,7 +987,6 @@ CONFIG_ATARI_MIDI=y CONFIG_ATARI_DSP56K=m CONFIG_AMIGA_BUILTIN_SERIAL=y CONFIG_MULTIFACE_III_TTY=m -CONFIG_MAC_SCC=y CONFIG_MAC_HID=y CONFIG_MVME147_SCC=y CONFIG_SERIAL167=y diff --git a/arch/m68k/include/asm/machw.h b/arch/m68k/include/asm/machw.h index 2b4de0c2ce4..a2209516492 100644 --- a/arch/m68k/include/asm/machw.h +++ b/arch/m68k/include/asm/machw.h @@ -21,29 +21,4 @@ #define VIDEOMEMSIZE (4096*1024) #define VIDEOMEMMASK (-4096*1024) -#ifndef __ASSEMBLY__ - -#include <linux/types.h> - -#if 0 -/* -** SCC Z8530 -*/ - -#define MAC_SCC_BAS (0x50F04000) -struct MAC_SCC - { - u_char cha_a_ctrl; - u_char char_dummy1; - u_char cha_a_data; - u_char char_dummy2; - u_char cha_b_ctrl; - u_char char_dummy3; - u_char cha_b_data; - }; -# define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS)) -#endif - -#endif /* __ASSEMBLY__ */ - #endif /* linux/machw.h */ diff --git a/arch/m68k/include/asm/macints.h b/arch/m68k/include/asm/macints.h index 679c48ab440..ebe1b70fe90 100644 --- a/arch/m68k/include/asm/macints.h +++ b/arch/m68k/include/asm/macints.h @@ -37,7 +37,6 @@ #define VIA1_SOURCE_BASE 8 #define VIA2_SOURCE_BASE 16 -#define MAC_SCC_SOURCE_BASE 24 #define PSC3_SOURCE_BASE 24 #define PSC4_SOURCE_BASE 32 #define PSC5_SOURCE_BASE 40 @@ -96,26 +95,12 @@ #define IRQ_PSC3_2 (26) #define IRQ_PSC3_3 (27) -/* Level 4 (SCC) interrupts */ -#define IRQ_SCC (32) -#define IRQ_SCCA (33) -#define IRQ_SCCB (34) -#if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */ -/* SCC interrupts */ -#define IRQ_SCCB_TX (32) -#define IRQ_SCCB_STAT (33) -#define IRQ_SCCB_RX (34) -#define IRQ_SCCB_SPCOND (35) -#define IRQ_SCCA_TX (36) -#define IRQ_SCCA_STAT (37) -#define IRQ_SCCA_RX (38) -#define IRQ_SCCA_SPCOND (39) -#endif - /* Level 4 (PSC, AV Macs only) interrupts */ #define IRQ_PSC4_0 (32) #define IRQ_PSC4_1 (33) +#define IRQ_MAC_SCC_A IRQ_PSC4_1 #define IRQ_PSC4_2 (34) +#define IRQ_MAC_SCC_B IRQ_PSC4_2 #define IRQ_PSC4_3 (35) #define IRQ_MAC_MACE_DMA IRQ_PSC4_3 @@ -146,6 +131,9 @@ #define IRQ_BABOON_2 (66) #define IRQ_BABOON_3 (67) +/* On non-PSC machines, the serial ports share an IRQ */ +#define IRQ_MAC_SCC IRQ_AUTO_4 + #define SLOT2IRQ(x) (x + 47) #define IRQ2SLOT(x) (x - 47) diff --git a/arch/m68k/mac/Makefile b/arch/m68k/mac/Makefile index daebd80bdef..b8d4c835f9a 100644 --- a/arch/m68k/mac/Makefile +++ b/arch/m68k/mac/Makefile @@ -3,4 +3,4 @@ # obj-y := config.o macints.o iop.o via.o oss.o psc.o \ - baboon.o macboing.o debug.o misc.o + baboon.o macboing.o misc.o diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c index e6666a30f24..c8a4c39cef5 100644 --- a/arch/m68k/mac/config.c +++ b/arch/m68k/mac/config.c @@ -792,6 +792,32 @@ static struct mac_model mac_data_table[] = { } }; +static struct resource scc_a_rsrcs[] = { + { .flags = IORESOURCE_MEM }, + { .flags = IORESOURCE_IRQ }, +}; + +static struct resource scc_b_rsrcs[] = { + { .flags = IORESOURCE_MEM }, + { .flags = IORESOURCE_IRQ }, +}; + +struct platform_device scc_a_pdev = { + .name = "scc", + .id = 0, + .num_resources = ARRAY_SIZE(scc_a_rsrcs), + .resource = scc_a_rsrcs, +}; +EXPORT_SYMBOL(scc_a_pdev); + +struct platform_device scc_b_pdev = { + .name = "scc", + .id = 1, + .num_resources = ARRAY_SIZE(scc_b_rsrcs), + .resource = scc_b_rsrcs, +}; +EXPORT_SYMBOL(scc_b_pdev); + static void __init mac_identify(void) { struct mac_model *m; @@ -814,6 +840,24 @@ static void __init mac_identify(void) } } + /* Set up serial port resources for the console initcall. */ + + scc_a_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase + 2; + scc_a_rsrcs[0].end = scc_a_rsrcs[0].start; + scc_b_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase; + scc_b_rsrcs[0].end = scc_b_rsrcs[0].start; + + switch (macintosh_config->scc_type) { + case MAC_SCC_PSC: + scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC_A; + scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC_B; + break; + default: + scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC; + scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC; + break; + } + /* * We need to pre-init the IOPs, if any. Otherwise * the serial console won't work if the user had @@ -872,6 +916,13 @@ int __init mac_platform_init(void) u8 *swim_base; /* + * Serial devices + */ + + platform_device_register(&scc_a_pdev); + platform_device_register(&scc_b_pdev); + + /* * Floppy device */ diff --git a/arch/m68k/mac/debug.c b/arch/m68k/mac/debug.c deleted file mode 100644 index bce074ceb76..00000000000 --- a/arch/m68k/mac/debug.c +++ /dev/null @@ -1,365 +0,0 @@ -/* - * linux/arch/m68k/mac/debug.c - * - * Shamelessly stolen (SCC code and general framework) from: - * - * linux/arch/m68k/atari/debug.c - * - * Atari debugging and serial console stuff - * - * Assembled of parts of former atari/config.c 97-12-18 by Roman Hodek - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/types.h> -#include <linux/sched.h> -#include <linux/tty.h> -#include <linux/console.h> -#include <linux/init.h> -#include <linux/delay.h> - -#define BOOTINFO_COMPAT_1_0 -#include <asm/setup.h> -#include <asm/bootinfo.h> -#include <asm/macints.h> - -extern unsigned long mac_videobase; -extern unsigned long mac_rowbytes; - -extern void mac_serial_print(const char *); - -#define DEBUG_HEADS -#undef DEBUG_SCREEN -#define DEBUG_SERIAL - -/* - * These two auxiliary debug functions should go away ASAP. Only usage: - * before the console output is up (after head.S come some other crucial - * setup routines :-) it permits writing 'data' to the screen as bit patterns - * (good luck reading those). Helped to figure that the bootinfo contained - * garbage data on the amount and size of memory chunks ... - * - * The 'pos' argument now simply means 'linefeed after print' ... - */ - -#ifdef DEBUG_SCREEN -static int peng, line; -#endif - -#if 0 - -void mac_debugging_short(int pos, short num) -{ -#ifdef DEBUG_SCREEN - unsigned char *pengoffset; - unsigned char *pptr; - int i; -#endif - -#ifdef DEBUG_SERIAL - printk("debug: %d !\n", num); -#endif - -#ifdef DEBUG_SCREEN - if (!MACH_IS_MAC) { - /* printk("debug: %d !\n", num); */ - return; - } - - /* calculate current offset */ - pengoffset = (unsigned char *)mac_videobase + - (150+line*2) * mac_rowbytes + 80 * peng; - - pptr = pengoffset; - - for (i = 0; i < 8 * sizeof(short); i++) { /* # of bits */ - /* value mask for bit i, reverse order */ - *pptr++ = (num & (1 << (8*sizeof(short)-i-1)) ? 0xFF : 0x00); - } - - peng++; - - if (pos) { - line++; - peng = 0; - } -#endif -} - -void mac_debugging_long(int pos, long addr) -{ -#ifdef DEBUG_SCREEN - unsigned char *pengoffset; - unsigned char *pptr; - int i; -#endif - -#ifdef DEBUG_SERIAL - printk("debug: #%ld !\n", addr); -#endif - -#ifdef DEBUG_SCREEN - if (!MACH_IS_MAC) { - /* printk("debug: #%ld !\n", addr); */ - return; - } - - pengoffset=(unsigned char *)(mac_videobase+(150+line*2)*mac_rowbytes) - +80*peng; - - pptr = pengoffset; - - for (i = 0; i < 8 * sizeof(long); i++) { /* # of bits */ - *pptr++ = (addr & (1 << (8*sizeof(long)-i-1)) ? 0xFF : 0x00); - } - - peng++; - - if (pos) { - line++; - peng = 0; - } -#endif -} - -#endif /* 0 */ - -#ifdef DEBUG_SERIAL -/* - * TODO: serial debug code - */ - -struct mac_SCC { - u_char cha_b_ctrl; - u_char char_dummy1; - u_char cha_a_ctrl; - u_char char_dummy2; - u_char cha_b_data; - u_char char_dummy3; - u_char cha_a_data; -}; - -# define scc (*((volatile struct mac_SCC*)mac_bi_data.sccbase)) - -static int scc_port = -1; - -static struct console mac_console_driver = { - .name = "debug", - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -/* - * Crude hack to get console output to the screen before the framebuffer - * is initialized (happens a lot later in 2.1!). - * We just use the console routines declared in head.S, this will interfere - * with regular framebuffer console output and should be used exclusively - * to debug kernel problems manifesting before framebuffer init (aka WSOD) - * - * To keep this hack from interfering with the regular console driver, either - * deregister this driver before/on framebuffer console init, or silence this - * function after the fbcon driver is running (will lose console messages!?). - * To debug real early bugs, need to write a 'mac_register_console_hack()' - * that is called from start_kernel() before setup_arch() and just registers - * this driver if Mac. - */ - -static void mac_debug_console_write(struct console *co, const char *str, - unsigned int count) -{ - mac_serial_print(str); -} - - - -/* Mac: loops_per_jiffy min. 19000 ^= .5 us; MFPDELAY was 0.6 us*/ - -#define uSEC 1 - -static inline void mac_sccb_out(char c) -{ - int i; - - do { - for (i = uSEC; i > 0; --i) - barrier(); - } while (!(scc.cha_b_ctrl & 0x04)); /* wait for tx buf empty */ - for (i = uSEC; i > 0; --i) - barrier(); - scc.cha_b_data = c; -} - -static inline void mac_scca_out(char c) -{ - int i; - - do { - for (i = uSEC; i > 0; --i) - barrier(); - } while (!(scc.cha_a_ctrl & 0x04)); /* wait for tx buf empty */ - for (i = uSEC; i > 0; --i) - barrier(); - scc.cha_a_data = c; -} - -static void mac_sccb_console_write(struct console *co, const char *str, - unsigned int count) -{ - while (count--) { - if (*str == '\n') - mac_sccb_out('\r'); - mac_sccb_out(*str++); - } -} - -static void mac_scca_console_write(struct console *co, const char *str, - unsigned int count) -{ - while (count--) { - if (*str == '\n') - mac_scca_out('\r'); - mac_scca_out(*str++); - } -} - - -/* The following two functions do a quick'n'dirty initialization of the MFP or - * SCC serial ports. They're used by the debugging interface, kgdb, and the - * serial console code. */ -#define SCCB_WRITE(reg,val) \ - do { \ - int i; \ - scc.cha_b_ctrl = (reg); \ - for (i = uSEC; i > 0; --i) \ - barrier(); \ - scc.cha_b_ctrl = (val); \ - for (i = uSEC; i > 0; --i) \ - barrier(); \ - } while(0) - -#define SCCA_WRITE(reg,val) \ - do { \ - int i; \ - scc.cha_a_ctrl = (reg); \ - for (i = uSEC; i > 0; --i) \ - barrier(); \ - scc.cha_a_ctrl = (val); \ - for (i = uSEC; i > 0; --i) \ - barrier(); \ - } while(0) - -/* loops_per_jiffy isn't initialized yet, so we can't use udelay(). This does a - * delay of ~ 60us. */ -/* Mac: loops_per_jiffy min. 19000 ^= .5 us; MFPDELAY was 0.6 us*/ -#define LONG_DELAY() \ - do { \ - int i; \ - for (i = 60*uSEC; i > 0; --i) \ - barrier(); \ - } while(0) - -static void __init mac_init_scc_port(int cflag, int port) -{ - /* - * baud rates: 1200, 1800, 2400, 4800, 9600, 19.2k, 38.4k, 57.6k, 115.2k - */ - - static int clksrc_table[9] = - /* reg 11: 0x50 = BRG, 0x00 = RTxC, 0x28 = TRxC */ - { 0x50, 0x50, 0x50, 0x50, 0x50, 0x50, 0x50, 0x00, 0x00 }; - static int clkmode_table[9] = - /* reg 4: 0x40 = x16, 0x80 = x32, 0xc0 = x64 */ - { 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0xc0, 0x80 }; - static int div_table[9] = - /* reg12 (BRG low) */ - { 94, 62, 46, 22, 10, 4, 1, 0, 0 }; - - int baud = cflag & CBAUD; - int clksrc, clkmode, div, reg3, reg5; - - if (cflag & CBAUDEX) - baud += B38400; - if (baud < B1200 || baud > B38400+2) - baud = B9600; /* use default 9600bps for non-implemented rates */ - baud -= B1200; /* tables starts at 1200bps */ - - clksrc = clksrc_table[baud]; - clkmode = clkmode_table[baud]; - div = div_table[baud]; - - reg3 = (((cflag & CSIZE) == CS8) ? 0xc0 : 0x40); - reg5 = (((cflag & CSIZE) == CS8) ? 0x60 : 0x20) | 0x82 /* assert DTR/RTS */; - - if (port == 1) { - (void)scc.cha_b_ctrl; /* reset reg pointer */ - SCCB_WRITE(9, 0xc0); /* reset */ - LONG_DELAY(); /* extra delay after WR9 access */ - SCCB_WRITE(4, (cflag & PARENB) ? ((cflag & PARODD) ? 0x01 : 0x03) : 0 | - 0x04 /* 1 stopbit */ | - clkmode); - SCCB_WRITE(3, reg3); - SCCB_WRITE(5, reg5); - SCCB_WRITE(9, 0); /* no interrupts */ - LONG_DELAY(); /* extra delay after WR9 access */ - SCCB_WRITE(10, 0); /* NRZ mode */ - SCCB_WRITE(11, clksrc); /* main clock source */ - SCCB_WRITE(12, div); /* BRG value */ - SCCB_WRITE(13, 0); /* BRG high byte */ - SCCB_WRITE(14, 1); - SCCB_WRITE(3, reg3 | 1); - SCCB_WRITE(5, reg5 | 8); - } else if (port == 0) { - (void)scc.cha_a_ctrl; /* reset reg pointer */ - SCCA_WRITE(9, 0xc0); /* reset */ - LONG_DELAY(); /* extra delay after WR9 access */ - SCCA_WRITE(4, (cflag & PARENB) ? ((cflag & PARODD) ? 0x01 : 0x03) : 0 | - 0x04 /* 1 stopbit */ | - clkmode); - SCCA_WRITE(3, reg3); - SCCA_WRITE(5, reg5); - SCCA_WRITE(9, 0); /* no interrupts */ - LONG_DELAY(); /* extra delay after WR9 access */ - SCCA_WRITE(10, 0); /* NRZ mode */ - SCCA_WRITE(11, clksrc); /* main clock source */ - SCCA_WRITE(12, div); /* BRG value */ - SCCA_WRITE(13, 0); /* BRG high byte */ - SCCA_WRITE(14, 1); - SCCA_WRITE(3, reg3 | 1); - SCCA_WRITE(5, reg5 | 8); - } -} -#endif /* DEBUG_SERIAL */ - -static int __init mac_debug_setup(char *arg) -{ - if (!MACH_IS_MAC) - return 0; - -#ifdef DEBUG_SERIAL - if (!strcmp(arg, "ser") || !strcmp(arg, "ser1")) { - /* Mac modem port */ - mac_init_scc_port(B9600|CS8, 0); - mac_console_driver.write = mac_scca_console_write; - scc_port = 0; - } else if (!strcmp(arg, "ser2")) { - /* Mac printer port */ - mac_init_scc_port(B9600|CS8, 1); - mac_console_driver.write = mac_sccb_console_write; - scc_port = 1; - } -#endif -#ifdef DEBUG_HEADS - if (!strcmp(arg, "scn") || !strcmp(arg, "con")) { - /* display, using head.S console routines */ - mac_console_driver.write = mac_debug_console_write; - } -#endif - if (mac_console_driver.write) - register_console(&mac_console_driver); - return 0; -} - -early_param("debug", mac_debug_setup); diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c index 23711074e0e..900d899f332 100644 --- a/arch/m68k/mac/macints.c +++ b/arch/m68k/mac/macints.c @@ -34,9 +34,7 @@ * * 3 - unused (?) * - * 4 - SCC (slot number determined by reading RR3 on the SSC itself) - * - slot 1: SCC channel A - * - slot 2: SCC channel B + * 4 - SCC * * 5 - unused (?) * [serial errors or special conditions seem to raise level 6 @@ -55,8 +53,6 @@ * - slot 5: Slot $E * * 4 - SCC IOP - * - slot 1: SCC channel A - * - slot 2: SCC channel B * * 5 - ISM IOP (ADB?) * @@ -136,13 +132,8 @@ #include <asm/irq_regs.h> #include <asm/mac_oss.h> -#define DEBUG_SPURIOUS #define SHUTUP_SONIC -/* SCC interrupt mask */ - -static int scc_mask; - /* * VIA/RBV hooks */ @@ -191,13 +182,6 @@ extern void baboon_irq_disable(int); extern void baboon_irq_clear(int); /* - * SCC interrupt routines - */ - -static void scc_irq_enable(unsigned int); -static void scc_irq_disable(unsigned int); - -/* * console_loglevel determines NMI handler function */ @@ -221,8 +205,6 @@ void __init mac_init_IRQ(void) #ifdef DEBUG_MACINTS printk("mac_init_IRQ(): Setting things up...\n"); #endif - scc_mask = 0; - m68k_setup_irq_controller(&mac_irq_controller, IRQ_USER, NUM_MAC_SOURCES - IRQ_USER); /* Make sure the SONIC interrupt is cleared or things get ugly */ @@ -283,15 +265,16 @@ void mac_enable_irq(unsigned int irq) via_irq_enable(irq); break; case 3: - case 4: case 5: case 6: if (psc_present) psc_irq_enable(irq); else if (oss_present) oss_irq_enable(irq); - else if (irq_src == 4) - scc_irq_enable(irq); + break; + case 4: + if (psc_present) + psc_irq_enable(irq); break; case 8: if (baboon_present) @@ -316,15 +299,16 @@ void mac_disable_irq(unsigned int irq) via_irq_disable(irq); break; case 3: - case 4: case 5: case 6: if (psc_present) psc_irq_disable(irq); else if (oss_present) oss_irq_disable(irq); - else if (irq_src == 4) - scc_irq_disable(irq); + break; + case 4: + if (psc_present) + psc_irq_disable(irq); break; case 8: if (baboon_present) @@ -347,7 +331,6 @@ void mac_clear_irq(unsigned int irq) via_irq_clear(irq); break; case 3: - case 4: case 5: case 6: if (psc_present) @@ -355,6 +338,10 @@ void mac_clear_irq(unsigned int irq) else if (oss_present) oss_irq_clear(irq); break; + case 4: + if (psc_present) + psc_irq_clear(irq); + break; case 8: if (baboon_present) baboon_irq_clear(irq); @@ -374,13 +361,17 @@ int mac_irq_pending(unsigned int irq) else return via_irq_pending(irq); case 3: - case 4: case 5: case 6: if (psc_present) return psc_irq_pending(irq); else if (oss_present) return oss_irq_pending(irq); + break; + case 4: + if (psc_present) + psc_irq_pending(irq); + break; } return 0; } @@ -448,59 +439,3 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id) in_nmi--; return IRQ_HANDLED; } - -/* - * Simple routines for masking and unmasking - * SCC interrupts in cases where this can't be - * done in hardware (only the PSC can do that.) - */ - -static void scc_irq_enable(unsigned int irq) -{ - int irq_idx = IRQ_IDX(irq); - - scc_mask |= (1 << irq_idx); -} - -static void scc_irq_disable(unsigned int irq) -{ - int irq_idx = IRQ_IDX(irq); - - scc_mask &= ~(1 << irq_idx); -} - -/* - * SCC master interrupt handler. We have to do a bit of magic here - * to figure out what channel gave us the interrupt; putting this - * here is cleaner than hacking it into drivers/char/macserial.c. - */ - -void mac_scc_dispatch(int irq, void *dev_id) -{ - volatile unsigned char *scc = (unsigned char *) mac_bi_data.sccbase + 2; - unsigned char reg; - unsigned long flags; - - /* Read RR3 from the chip. Always do this on channel A */ - /* This must be an atomic operation so disable irqs. */ - - local_irq_save(flags); - *scc = 3; - reg = *scc; - local_irq_restore(flags); - - /* Now dispatch. Bits 0-2 are for channel B and */ - /* bits 3-5 are for channel A. We can safely */ - /* ignore the remaining bits here. */ - /* */ - /* Note that we're ignoring scc_mask for now. */ - /* If we actually mask the ints then we tend to */ - /* get hammered by very persistent SCC irqs, */ - /* and since they're autovector interrupts they */ - /* pretty much kill the system. */ - - if (reg & 0x38) - m68k_handle_int(IRQ_SCCA); - if (reg & 0x07) - m68k_handle_int(IRQ_SCCB); -} diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c index f3d23d6ebcf..a9c0f5ab4cc 100644 --- a/arch/m68k/mac/oss.c +++ b/arch/m68k/mac/oss.c @@ -33,7 +33,6 @@ static irqreturn_t oss_irq(int, void *); static irqreturn_t oss_nubus_irq(int, void *); extern irqreturn_t via1_irq(int, void *); -extern irqreturn_t mac_scc_dispatch(int, void *); /* * Initialize the OSS @@ -69,9 +68,6 @@ void __init oss_register_interrupts(void) if (request_irq(OSS_IRQLEV_SCSI, oss_irq, IRQ_FLG_LOCK, "scsi", (void *) oss)) pr_err("Couldn't register %s interrupt\n", "scsi"); - if (request_irq(OSS_IRQLEV_IOPSCC, mac_scc_dispatch, IRQ_FLG_LOCK, - "scc", mac_scc_dispatch)) - pr_err("Couldn't register %s interrupt\n", "scc"); if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, IRQ_FLG_LOCK, "nubus", (void *) oss)) pr_err("Couldn't register %s interrupt\n", "nubus"); @@ -172,9 +168,7 @@ void oss_irq_enable(int irq) { printk("oss_irq_enable(%d)\n", irq); #endif switch(irq) { - case IRQ_SCC: - case IRQ_SCCA: - case IRQ_SCCB: + case IRQ_MAC_SCC: oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_IOPSCC; break; case IRQ_MAC_ADB: @@ -212,9 +206,7 @@ void oss_irq_disable(int irq) { printk("oss_irq_disable(%d)\n", irq); #endif switch(irq) { - case IRQ_SCC: - case IRQ_SCCA: - case IRQ_SCCB: + case IRQ_MAC_SCC: oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_DISABLED; break; case IRQ_MAC_ADB: @@ -250,9 +242,7 @@ void oss_irq_disable(int irq) { void oss_irq_clear(int irq) { /* FIXME: how to do this on OSS? */ switch(irq) { - case IRQ_SCC: - case IRQ_SCCA: - case IRQ_SCCB: + case IRQ_MAC_SCC: oss->irq_pending &= ~OSS_IP_IOPSCC; break; case IRQ_MAC_ADB: @@ -280,9 +270,7 @@ void oss_irq_clear(int irq) { int oss_irq_pending(int irq) { switch(irq) { - case IRQ_SCC: - case IRQ_SCCA: - case IRQ_SCCB: + case IRQ_MAC_SCC: return oss->irq_pending & OSS_IP_IOPSCC; break; case IRQ_MAC_ADB: diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index 11bce3cb648..e71166daec6 100644 --- a/arch/m68k/mac/via.c +++ b/arch/m68k/mac/via.c @@ -84,8 +84,6 @@ void via_irq_enable(int irq); void via_irq_disable(int irq); void via_irq_clear(int irq); -extern irqreturn_t mac_scc_dispatch(int, void *); - /* * Initialize the VIAs * @@ -311,11 +309,6 @@ void __init via_register_interrupts(void) if (request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST, "via2", (void *) via2)) pr_err("Couldn't register %s interrupt\n", "via2"); - if (!psc_present) { - if (request_irq(IRQ_AUTO_4, mac_scc_dispatch, IRQ_FLG_LOCK, - "scc", mac_scc_dispatch)) - pr_err("Couldn't register %s interrupt\n", "scc"); - } if (request_irq(IRQ_MAC_NUBUS, via_nubus_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST, "nubus", (void *) via2)) pr_err("Couldn't register %s interrupt\n", "nubus"); |