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Commit 80614e5a authored by Finn Thain's avatar Finn Thain Committed by Geert Uytterhoeven
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mac68k: replace mac68k SCC code with platform device 

Remove the old 68k Mac serial port code and a lot of related cruft. Add
new SCC platform devices to mac 68k platform.
Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
parent ec9cbe09
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Showing with 80 additions and 522 deletions
arch/m68k/Kconfig
View file @ 80614e5a
...@@ -536,10 +536,6 @@ config GVPIOEXT_PLIP ...@@ -536,10 +536,6 @@ config GVPIOEXT_PLIP
Say Y to enable doing IP over the parallel port on your GVP Say Y to enable doing IP over the parallel port on your GVP
IO-Extender card, N otherwise. IO-Extender card, N otherwise.
config MAC_SCC
tristate "Macintosh serial support"
depends on MAC
config MAC_HID config MAC_HID
bool bool
depends on INPUT_ADBHID depends on INPUT_ADBHID
...@@ -595,7 +591,7 @@ config DN_SERIAL ...@@ -595,7 +591,7 @@ config DN_SERIAL
config SERIAL_CONSOLE config SERIAL_CONSOLE
bool "Support for serial port 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--- ---help---
If you say Y here, it will be possible to use a serial port as the 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 system console (the system console is the device which receives all
......
arch/m68k/configs/mac_defconfig
View file @ 80614e5a
...@@ -839,9 +839,7 @@ CONFIG_HIDRAW=y ...@@ -839,9 +839,7 @@ CONFIG_HIDRAW=y
# #
# Character devices # Character devices
# #
CONFIG_MAC_SCC=y
CONFIG_MAC_HID=y CONFIG_MAC_HID=y
CONFIG_SERIAL_CONSOLE=y
# #
# File systems # File systems
......
arch/m68k/configs/multi_defconfig
View file @ 80614e5a
...@@ -987,7 +987,6 @@ CONFIG_ATARI_MIDI=y ...@@ -987,7 +987,6 @@ CONFIG_ATARI_MIDI=y
CONFIG_ATARI_DSP56K=m CONFIG_ATARI_DSP56K=m
CONFIG_AMIGA_BUILTIN_SERIAL=y CONFIG_AMIGA_BUILTIN_SERIAL=y
CONFIG_MULTIFACE_III_TTY=m CONFIG_MULTIFACE_III_TTY=m
CONFIG_MAC_SCC=y
CONFIG_MAC_HID=y CONFIG_MAC_HID=y
CONFIG_MVME147_SCC=y CONFIG_MVME147_SCC=y
CONFIG_SERIAL167=y CONFIG_SERIAL167=y
......
arch/m68k/include/asm/machw.h
View file @ 80614e5a
...@@ -21,29 +21,4 @@ ...@@ -21,29 +21,4 @@
#define VIDEOMEMSIZE (4096*1024) #define VIDEOMEMSIZE (4096*1024)
#define VIDEOMEMMASK (-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 */ #endif /* linux/machw.h */
arch/m68k/include/asm/macints.h
View file @ 80614e5a
...@@ -37,7 +37,6 @@ ...@@ -37,7 +37,6 @@
#define VIA1_SOURCE_BASE 8 #define VIA1_SOURCE_BASE 8
#define VIA2_SOURCE_BASE 16 #define VIA2_SOURCE_BASE 16
#define MAC_SCC_SOURCE_BASE 24
#define PSC3_SOURCE_BASE 24 #define PSC3_SOURCE_BASE 24
#define PSC4_SOURCE_BASE 32 #define PSC4_SOURCE_BASE 32
#define PSC5_SOURCE_BASE 40 #define PSC5_SOURCE_BASE 40
...@@ -96,26 +95,12 @@ ...@@ -96,26 +95,12 @@
#define IRQ_PSC3_2 (26) #define IRQ_PSC3_2 (26)
#define IRQ_PSC3_3 (27) #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 */ /* Level 4 (PSC, AV Macs only) interrupts */
#define IRQ_PSC4_0 (32) #define IRQ_PSC4_0 (32)
#define IRQ_PSC4_1 (33) #define IRQ_PSC4_1 (33)
#define IRQ_MAC_SCC_A IRQ_PSC4_1
#define IRQ_PSC4_2 (34) #define IRQ_PSC4_2 (34)
#define IRQ_MAC_SCC_B IRQ_PSC4_2
#define IRQ_PSC4_3 (35) #define IRQ_PSC4_3 (35)
#define IRQ_MAC_MACE_DMA IRQ_PSC4_3 #define IRQ_MAC_MACE_DMA IRQ_PSC4_3
...@@ -146,6 +131,9 @@ ...@@ -146,6 +131,9 @@
#define IRQ_BABOON_2 (66) #define IRQ_BABOON_2 (66)
#define IRQ_BABOON_3 (67) #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 SLOT2IRQ(x) (x + 47)
#define IRQ2SLOT(x) (x - 47) #define IRQ2SLOT(x) (x - 47)
......
arch/m68k/mac/Makefile
View file @ 80614e5a
...@@ -3,4 +3,4 @@ ...@@ -3,4 +3,4 @@
# #
obj-y := config.o macints.o iop.o via.o oss.o psc.o \ 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
arch/m68k/mac/config.c
View file @ 80614e5a
...@@ -792,6 +792,32 @@ static struct mac_model mac_data_table[] = { ...@@ -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) static void __init mac_identify(void)
{ {
struct mac_model *m; struct mac_model *m;
...@@ -814,6 +840,24 @@ static void __init mac_identify(void) ...@@ -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 * We need to pre-init the IOPs, if any. Otherwise
* the serial console won't work if the user had * the serial console won't work if the user had
...@@ -871,6 +915,13 @@ int __init mac_platform_init(void) ...@@ -871,6 +915,13 @@ int __init mac_platform_init(void)
{ {
u8 *swim_base; u8 *swim_base;
/*
* Serial devices
*/
platform_device_register(&scc_a_pdev);
platform_device_register(&scc_b_pdev);
/* /*
* Floppy device * Floppy device
*/ */
......
arch/m68k/mac/debug.c deleted 100644 → 0
View file @ ec9cbe09
/*
* 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);
arch/m68k/mac/macints.c
View file @ 80614e5a
...@@ -34,9 +34,7 @@ ...@@ -34,9 +34,7 @@
* *
* 3 - unused (?) * 3 - unused (?)
* *
* 4 - SCC (slot number determined by reading RR3 on the SSC itself) * 4 - SCC
* - slot 1: SCC channel A
* - slot 2: SCC channel B
* *
* 5 - unused (?) * 5 - unused (?)
* [serial errors or special conditions seem to raise level 6 * [serial errors or special conditions seem to raise level 6
...@@ -55,8 +53,6 @@ ...@@ -55,8 +53,6 @@
* - slot 5: Slot $E * - slot 5: Slot $E
* *
* 4 - SCC IOP * 4 - SCC IOP
* - slot 1: SCC channel A
* - slot 2: SCC channel B
* *
* 5 - ISM IOP (ADB?) * 5 - ISM IOP (ADB?)
* *
...@@ -136,13 +132,8 @@ ...@@ -136,13 +132,8 @@
#include <asm/irq_regs.h> #include <asm/irq_regs.h>
#include <asm/mac_oss.h> #include <asm/mac_oss.h>
#define DEBUG_SPURIOUS
#define SHUTUP_SONIC #define SHUTUP_SONIC
/* SCC interrupt mask */
static int scc_mask;
/* /*
* VIA/RBV hooks * VIA/RBV hooks
*/ */
...@@ -190,13 +181,6 @@ extern void baboon_irq_enable(int); ...@@ -190,13 +181,6 @@ extern void baboon_irq_enable(int);
extern void baboon_irq_disable(int); extern void baboon_irq_disable(int);
extern void baboon_irq_clear(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 * console_loglevel determines NMI handler function
*/ */
...@@ -221,8 +205,6 @@ void __init mac_init_IRQ(void) ...@@ -221,8 +205,6 @@ void __init mac_init_IRQ(void)
#ifdef DEBUG_MACINTS #ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Setting things up...\n"); printk("mac_init_IRQ(): Setting things up...\n");
#endif #endif
scc_mask = 0;
m68k_setup_irq_controller(&mac_irq_controller, IRQ_USER, m68k_setup_irq_controller(&mac_irq_controller, IRQ_USER,
NUM_MAC_SOURCES - IRQ_USER); NUM_MAC_SOURCES - IRQ_USER);
/* Make sure the SONIC interrupt is cleared or things get ugly */ /* Make sure the SONIC interrupt is cleared or things get ugly */
...@@ -283,15 +265,16 @@ void mac_enable_irq(unsigned int irq) ...@@ -283,15 +265,16 @@ void mac_enable_irq(unsigned int irq)
via_irq_enable(irq); via_irq_enable(irq);
break; break;
case 3: case 3:
case 4:
case 5: case 5:
case 6: case 6:
if (psc_present) if (psc_present)
psc_irq_enable(irq); psc_irq_enable(irq);
else if (oss_present) else if (oss_present)
oss_irq_enable(irq); oss_irq_enable(irq);
else if (irq_src == 4) break;
scc_irq_enable(irq); case 4:
if (psc_present)
psc_irq_enable(irq);
break; break;
case 8: case 8:
if (baboon_present) if (baboon_present)
...@@ -316,15 +299,16 @@ void mac_disable_irq(unsigned int irq) ...@@ -316,15 +299,16 @@ void mac_disable_irq(unsigned int irq)
via_irq_disable(irq); via_irq_disable(irq);
break; break;
case 3: case 3:
case 4:
case 5: case 5:
case 6: case 6:
if (psc_present) if (psc_present)
psc_irq_disable(irq); psc_irq_disable(irq);
else if (oss_present) else if (oss_present)
oss_irq_disable(irq); oss_irq_disable(irq);
else if (irq_src == 4) break;
scc_irq_disable(irq); case 4:
if (psc_present)
psc_irq_disable(irq);
break; break;
case 8: case 8:
if (baboon_present) if (baboon_present)
...@@ -347,7 +331,6 @@ void mac_clear_irq(unsigned int irq) ...@@ -347,7 +331,6 @@ void mac_clear_irq(unsigned int irq)
via_irq_clear(irq); via_irq_clear(irq);
break; break;
case 3: case 3:
case 4:
case 5: case 5:
case 6: case 6:
if (psc_present) if (psc_present)
...@@ -355,6 +338,10 @@ void mac_clear_irq(unsigned int irq) ...@@ -355,6 +338,10 @@ void mac_clear_irq(unsigned int irq)
else if (oss_present) else if (oss_present)
oss_irq_clear(irq); oss_irq_clear(irq);
break; break;
case 4:
if (psc_present)
psc_irq_clear(irq);
break;
case 8: case 8:
if (baboon_present) if (baboon_present)
baboon_irq_clear(irq); baboon_irq_clear(irq);
...@@ -374,13 +361,17 @@ int mac_irq_pending(unsigned int irq) ...@@ -374,13 +361,17 @@ int mac_irq_pending(unsigned int irq)
else else
return via_irq_pending(irq); return via_irq_pending(irq);
case 3: case 3:
case 4:
case 5: case 5:
case 6: case 6:
if (psc_present) if (psc_present)
return psc_irq_pending(irq); return psc_irq_pending(irq);
else if (oss_present) else if (oss_present)
return oss_irq_pending(irq); return oss_irq_pending(irq);
break;
case 4:
if (psc_present)
psc_irq_pending(irq);
break;
} }
return 0; return 0;
} }
...@@ -448,59 +439,3 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id) ...@@ -448,59 +439,3 @@ irqreturn_t mac_nmi_handler(int irq, void *dev_id)
in_nmi--; in_nmi--;
return IRQ_HANDLED; 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);
}
arch/m68k/mac/oss.c
View file @ 80614e5a
...@@ -33,7 +33,6 @@ static irqreturn_t oss_irq(int, void *); ...@@ -33,7 +33,6 @@ static irqreturn_t oss_irq(int, void *);
static irqreturn_t oss_nubus_irq(int, void *); static irqreturn_t oss_nubus_irq(int, void *);
extern irqreturn_t via1_irq(int, void *); extern irqreturn_t via1_irq(int, void *);
extern irqreturn_t mac_scc_dispatch(int, void *);
/* /*
* Initialize the OSS * Initialize the OSS
...@@ -69,9 +68,6 @@ void __init oss_register_interrupts(void) ...@@ -69,9 +68,6 @@ void __init oss_register_interrupts(void)
if (request_irq(OSS_IRQLEV_SCSI, oss_irq, IRQ_FLG_LOCK, if (request_irq(OSS_IRQLEV_SCSI, oss_irq, IRQ_FLG_LOCK,
"scsi", (void *) oss)) "scsi", (void *) oss))
pr_err("Couldn't register %s interrupt\n", "scsi"); 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, if (request_irq(OSS_IRQLEV_NUBUS, oss_nubus_irq, IRQ_FLG_LOCK,
"nubus", (void *) oss)) "nubus", (void *) oss))
pr_err("Couldn't register %s interrupt\n", "nubus"); pr_err("Couldn't register %s interrupt\n", "nubus");
...@@ -172,9 +168,7 @@ void oss_irq_enable(int irq) { ...@@ -172,9 +168,7 @@ void oss_irq_enable(int irq) {
printk("oss_irq_enable(%d)\n", irq); printk("oss_irq_enable(%d)\n", irq);
#endif #endif
switch(irq) { switch(irq) {
case IRQ_SCC: case IRQ_MAC_SCC:
case IRQ_SCCA:
case IRQ_SCCB:
oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_IOPSCC; oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_IOPSCC;
break; break;
case IRQ_MAC_ADB: case IRQ_MAC_ADB:
...@@ -212,9 +206,7 @@ void oss_irq_disable(int irq) { ...@@ -212,9 +206,7 @@ void oss_irq_disable(int irq) {
printk("oss_irq_disable(%d)\n", irq); printk("oss_irq_disable(%d)\n", irq);
#endif #endif
switch(irq) { switch(irq) {
case IRQ_SCC: case IRQ_MAC_SCC:
case IRQ_SCCA:
case IRQ_SCCB:
oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_DISABLED; oss->irq_level[OSS_IOPSCC] = OSS_IRQLEV_DISABLED;
break; break;
case IRQ_MAC_ADB: case IRQ_MAC_ADB:
...@@ -250,9 +242,7 @@ void oss_irq_disable(int irq) { ...@@ -250,9 +242,7 @@ void oss_irq_disable(int irq) {
void oss_irq_clear(int irq) { void oss_irq_clear(int irq) {
/* FIXME: how to do this on OSS? */ /* FIXME: how to do this on OSS? */
switch(irq) { switch(irq) {
case IRQ_SCC: case IRQ_MAC_SCC:
case IRQ_SCCA:
case IRQ_SCCB:
oss->irq_pending &= ~OSS_IP_IOPSCC; oss->irq_pending &= ~OSS_IP_IOPSCC;
break; break;
case IRQ_MAC_ADB: case IRQ_MAC_ADB:
...@@ -280,9 +270,7 @@ void oss_irq_clear(int irq) { ...@@ -280,9 +270,7 @@ void oss_irq_clear(int irq) {
int oss_irq_pending(int irq) int oss_irq_pending(int irq)
{ {
switch(irq) { switch(irq) {
case IRQ_SCC: case IRQ_MAC_SCC:
case IRQ_SCCA:
case IRQ_SCCB:
return oss->irq_pending & OSS_IP_IOPSCC; return oss->irq_pending & OSS_IP_IOPSCC;
break; break;
case IRQ_MAC_ADB: case IRQ_MAC_ADB:
......
arch/m68k/mac/via.c
View file @ 80614e5a
...@@ -84,8 +84,6 @@ void via_irq_enable(int irq); ...@@ -84,8 +84,6 @@ void via_irq_enable(int irq);
void via_irq_disable(int irq); void via_irq_disable(int irq);
void via_irq_clear(int irq); void via_irq_clear(int irq);
extern irqreturn_t mac_scc_dispatch(int, void *);
/* /*
* Initialize the VIAs * Initialize the VIAs
* *
...@@ -311,11 +309,6 @@ void __init via_register_interrupts(void) ...@@ -311,11 +309,6 @@ void __init via_register_interrupts(void)
if (request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST, if (request_irq(IRQ_AUTO_2, via2_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
"via2", (void *) via2)) "via2", (void *) via2))
pr_err("Couldn't register %s interrupt\n", "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, if (request_irq(IRQ_MAC_NUBUS, via_nubus_irq,
IRQ_FLG_LOCK|IRQ_FLG_FAST, "nubus", (void *) via2)) IRQ_FLG_LOCK|IRQ_FLG_FAST, "nubus", (void *) via2))
pr_err("Couldn't register %s interrupt\n", "nubus"); pr_err("Couldn't register %s interrupt\n", "nubus");
......
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