diff options
Diffstat (limited to 'arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c')
| -rw-r--r-- | arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c | 786 |
1 files changed, 786 insertions, 0 deletions
diff --git a/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c new file mode 100644 index 00000000000..fd5b433f83b --- /dev/null +++ b/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c @@ -0,0 +1,786 @@ +/* + * linux/arch/mips/tx4927/toshiba_rbtx4927/toshiba_rbtx4927_irq.c + * + * Toshiba RBTX4927 specific interrupt handlers + * + * Author: MontaVista Software, Inc. + * source@mvista.com + * + * Copyright 2001-2002 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + + +/* +IRQ Device +00 RBTX4927-ISA/00 +01 RBTX4927-ISA/01 PS2/Keyboard +02 RBTX4927-ISA/02 Cascade RBTX4927-ISA (irqs 8-15) +03 RBTX4927-ISA/03 +04 RBTX4927-ISA/04 +05 RBTX4927-ISA/05 +06 RBTX4927-ISA/06 +07 RBTX4927-ISA/07 +08 RBTX4927-ISA/08 +09 RBTX4927-ISA/09 +10 RBTX4927-ISA/10 +11 RBTX4927-ISA/11 +12 RBTX4927-ISA/12 PS2/Mouse (not supported at this time) +13 RBTX4927-ISA/13 +14 RBTX4927-ISA/14 IDE +15 RBTX4927-ISA/15 + +16 TX4927-CP0/00 Software 0 +17 TX4927-CP0/01 Software 1 +18 TX4927-CP0/02 Cascade TX4927-CP0 +19 TX4927-CP0/03 Multiplexed -- do not use +20 TX4927-CP0/04 Multiplexed -- do not use +21 TX4927-CP0/05 Multiplexed -- do not use +22 TX4927-CP0/06 Multiplexed -- do not use +23 TX4927-CP0/07 CPU TIMER + +24 TX4927-PIC/00 +25 TX4927-PIC/01 +26 TX4927-PIC/02 +27 TX4927-PIC/03 Cascade RBTX4927-IOC +28 TX4927-PIC/04 +29 TX4927-PIC/05 RBTX4927 RTL-8019AS ethernet +30 TX4927-PIC/06 +31 TX4927-PIC/07 +32 TX4927-PIC/08 TX4927 SerialIO Channel 0 +33 TX4927-PIC/09 TX4927 SerialIO Channel 1 +34 TX4927-PIC/10 +35 TX4927-PIC/11 +36 TX4927-PIC/12 +37 TX4927-PIC/13 +38 TX4927-PIC/14 +39 TX4927-PIC/15 +40 TX4927-PIC/16 TX4927 PCI PCI-C +41 TX4927-PIC/17 +42 TX4927-PIC/18 +43 TX4927-PIC/19 +44 TX4927-PIC/20 +45 TX4927-PIC/21 +46 TX4927-PIC/22 TX4927 PCI PCI-ERR +47 TX4927-PIC/23 TX4927 PCI PCI-PMA (not used) +48 TX4927-PIC/24 +49 TX4927-PIC/25 +50 TX4927-PIC/26 +51 TX4927-PIC/27 +52 TX4927-PIC/28 +53 TX4927-PIC/29 +54 TX4927-PIC/30 +55 TX4927-PIC/31 + +56 RBTX4927-IOC/00 FPCIB0 PCI-D PJ4/A PJ5/B SB/C PJ6/D PJ7/A (SouthBridge/NotUsed) [RTL-8139=PJ4] +57 RBTX4927-IOC/01 FPCIB0 PCI-C PJ4/D PJ5/A SB/B PJ6/C PJ7/D (SouthBridge/NotUsed) [RTL-8139=PJ5] +58 RBTX4927-IOC/02 FPCIB0 PCI-B PJ4/C PJ5/D SB/A PJ6/B PJ7/C (SouthBridge/IDE/pin=1,INTR) [RTL-8139=NotSupported] +59 RBTX4927-IOC/03 FPCIB0 PCI-A PJ4/B PJ5/C SB/D PJ6/A PJ7/B (SouthBridge/USB/pin=4) [RTL-8139=PJ6] +60 RBTX4927-IOC/04 +61 RBTX4927-IOC/05 +62 RBTX4927-IOC/06 +63 RBTX4927-IOC/07 + +NOTES: +SouthBridge/INTR is mapped to SouthBridge/A=PCI-B/#58 +SouthBridge/ISA/pin=0 no pci irq used by this device +SouthBridge/IDE/pin=1 no pci irq used by this device, using INTR via ISA IRQ14 +SouthBridge/USB/pin=4 using pci irq SouthBridge/D=PCI-A=#59 +SouthBridge/PMC/pin=0 no pci irq used by this device +SuperIO/PS2/Keyboard, using INTR via ISA IRQ1 +SuperIO/PS2/Mouse, using INTR via ISA IRQ12 (mouse not currently supported) +JP7 is not bus master -- do NOT use -- only 4 pci bus master's allowed -- SouthBridge, JP4, JP5, JP6 +*/ + +#include <linux/config.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/timex.h> +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/pci.h> +#include <asm/processor.h> +#include <asm/ptrace.h> +#include <asm/reboot.h> +#include <asm/time.h> +#include <linux/bootmem.h> +#include <linux/blkdev.h> +#ifdef CONFIG_RTC_DS1742 +#include <linux/ds1742rtc.h> +#endif +#ifdef CONFIG_TOSHIBA_FPCIB0 +#include <asm/tx4927/smsc_fdc37m81x.h> +#endif +#include <asm/tx4927/toshiba_rbtx4927.h> + + +#undef TOSHIBA_RBTX4927_IRQ_DEBUG + +#ifdef TOSHIBA_RBTX4927_IRQ_DEBUG +#define TOSHIBA_RBTX4927_IRQ_NONE 0x00000000 + +#define TOSHIBA_RBTX4927_IRQ_INFO ( 1 << 0 ) +#define TOSHIBA_RBTX4927_IRQ_WARN ( 1 << 1 ) +#define TOSHIBA_RBTX4927_IRQ_EROR ( 1 << 2 ) + +#define TOSHIBA_RBTX4927_IRQ_IOC_INIT ( 1 << 10 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_STARTUP ( 1 << 11 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_SHUTDOWN ( 1 << 12 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_ENABLE ( 1 << 13 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_DISABLE ( 1 << 14 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_MASK ( 1 << 15 ) +#define TOSHIBA_RBTX4927_IRQ_IOC_ENDIRQ ( 1 << 16 ) + +#define TOSHIBA_RBTX4927_IRQ_ISA_INIT ( 1 << 20 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_STARTUP ( 1 << 21 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_SHUTDOWN ( 1 << 22 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_ENABLE ( 1 << 23 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_DISABLE ( 1 << 24 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_MASK ( 1 << 25 ) +#define TOSHIBA_RBTX4927_IRQ_ISA_ENDIRQ ( 1 << 26 ) + +#define TOSHIBA_RBTX4927_SETUP_ALL 0xffffffff +#endif + + +#ifdef TOSHIBA_RBTX4927_IRQ_DEBUG +static const u32 toshiba_rbtx4927_irq_debug_flag = + (TOSHIBA_RBTX4927_IRQ_NONE | TOSHIBA_RBTX4927_IRQ_INFO | + TOSHIBA_RBTX4927_IRQ_WARN | TOSHIBA_RBTX4927_IRQ_EROR +// | TOSHIBA_RBTX4927_IRQ_IOC_INIT +// | TOSHIBA_RBTX4927_IRQ_IOC_STARTUP +// | TOSHIBA_RBTX4927_IRQ_IOC_SHUTDOWN +// | TOSHIBA_RBTX4927_IRQ_IOC_ENABLE +// | TOSHIBA_RBTX4927_IRQ_IOC_DISABLE +// | TOSHIBA_RBTX4927_IRQ_IOC_MASK +// | TOSHIBA_RBTX4927_IRQ_IOC_ENDIRQ +// | TOSHIBA_RBTX4927_IRQ_ISA_INIT +// | TOSHIBA_RBTX4927_IRQ_ISA_STARTUP +// | TOSHIBA_RBTX4927_IRQ_ISA_SHUTDOWN +// | TOSHIBA_RBTX4927_IRQ_ISA_ENABLE +// | TOSHIBA_RBTX4927_IRQ_ISA_DISABLE +// | TOSHIBA_RBTX4927_IRQ_ISA_MASK +// | TOSHIBA_RBTX4927_IRQ_ISA_ENDIRQ + ); +#endif + + +#ifdef TOSHIBA_RBTX4927_IRQ_DEBUG +#define TOSHIBA_RBTX4927_IRQ_DPRINTK(flag,str...) \ + if ( (toshiba_rbtx4927_irq_debug_flag) & (flag) ) \ + { \ + char tmp[100]; \ + sprintf( tmp, str ); \ + printk( "%s(%s:%u)::%s", __FUNCTION__, __FILE__, __LINE__, tmp ); \ + } +#else +#define TOSHIBA_RBTX4927_IRQ_DPRINTK(flag,str...) +#endif + + + + +#define TOSHIBA_RBTX4927_IRQ_IOC_RAW_BEG 0 +#define TOSHIBA_RBTX4927_IRQ_IOC_RAW_END 7 + +#define TOSHIBA_RBTX4927_IRQ_IOC_BEG ((TX4927_IRQ_PIC_END+1)+TOSHIBA_RBTX4927_IRQ_IOC_RAW_BEG) /* 56 */ +#define TOSHIBA_RBTX4927_IRQ_IOC_END ((TX4927_IRQ_PIC_END+1)+TOSHIBA_RBTX4927_IRQ_IOC_RAW_END) /* 63 */ + + +#define TOSHIBA_RBTX4927_IRQ_ISA_BEG MI8259_IRQ_ISA_BEG +#define TOSHIBA_RBTX4927_IRQ_ISA_END MI8259_IRQ_ISA_END +#define TOSHIBA_RBTX4927_IRQ_ISA_MID ((TOSHIBA_RBTX4927_IRQ_ISA_BEG+TOSHIBA_RBTX4927_IRQ_ISA_END+1)/2) + + +#define TOSHIBA_RBTX4927_IRQ_NEST_IOC_ON_PIC TX4927_IRQ_NEST_EXT_ON_PIC +#define TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC (TOSHIBA_RBTX4927_IRQ_IOC_BEG+2) +#define TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_ISA (TOSHIBA_RBTX4927_IRQ_ISA_BEG+2) + +extern int tx4927_using_backplane; + +#ifdef CONFIG_TOSHIBA_FPCIB0 +extern void enable_8259A_irq(unsigned int irq); +extern void disable_8259A_irq(unsigned int irq); +extern void mask_and_ack_8259A(unsigned int irq); +#endif + +static unsigned int toshiba_rbtx4927_irq_ioc_startup(unsigned int irq); +static void toshiba_rbtx4927_irq_ioc_shutdown(unsigned int irq); +static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq); +static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq); +static void toshiba_rbtx4927_irq_ioc_mask_and_ack(unsigned int irq); +static void toshiba_rbtx4927_irq_ioc_end(unsigned int irq); + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static unsigned int toshiba_rbtx4927_irq_isa_startup(unsigned int irq); +static void toshiba_rbtx4927_irq_isa_shutdown(unsigned int irq); +static void toshiba_rbtx4927_irq_isa_enable(unsigned int irq); +static void toshiba_rbtx4927_irq_isa_disable(unsigned int irq); +static void toshiba_rbtx4927_irq_isa_mask_and_ack(unsigned int irq); +static void toshiba_rbtx4927_irq_isa_end(unsigned int irq); +#endif + +static DEFINE_SPINLOCK(toshiba_rbtx4927_ioc_lock); + + +#define TOSHIBA_RBTX4927_IOC_NAME "RBTX4927-IOC" +static struct hw_interrupt_type toshiba_rbtx4927_irq_ioc_type = { + .typename = TOSHIBA_RBTX4927_IOC_NAME, + .startup = toshiba_rbtx4927_irq_ioc_startup, + .shutdown = toshiba_rbtx4927_irq_ioc_shutdown, + .enable = toshiba_rbtx4927_irq_ioc_enable, + .disable = toshiba_rbtx4927_irq_ioc_disable, + .ack = toshiba_rbtx4927_irq_ioc_mask_and_ack, + .end = toshiba_rbtx4927_irq_ioc_end, + .set_affinity = NULL +}; +#define TOSHIBA_RBTX4927_IOC_INTR_ENAB 0xbc002000 +#define TOSHIBA_RBTX4927_IOC_INTR_STAT 0xbc002006 + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +#define TOSHIBA_RBTX4927_ISA_NAME "RBTX4927-ISA" +static struct hw_interrupt_type toshiba_rbtx4927_irq_isa_type = { + .typename = TOSHIBA_RBTX4927_ISA_NAME, + .startup = toshiba_rbtx4927_irq_isa_startup, + .shutdown = toshiba_rbtx4927_irq_isa_shutdown, + .enable = toshiba_rbtx4927_irq_isa_enable, + .disable = toshiba_rbtx4927_irq_isa_disable, + .ack = toshiba_rbtx4927_irq_isa_mask_and_ack, + .end = toshiba_rbtx4927_irq_isa_end, + .set_affinity = NULL +}; +#endif + + +u32 bit2num(u32 num) +{ + u32 i; + + for (i = 0; i < (sizeof(num) * 8); i++) { + if (num & (1 << i)) { + return (i); + } + } + return (0); +} + +int toshiba_rbtx4927_irq_nested(int sw_irq) +{ + u32 level3; + u32 level4; + u32 level5; + + level3 = reg_rd08(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f; + if (level3) { + sw_irq = TOSHIBA_RBTX4927_IRQ_IOC_BEG + bit2num(level3); + if (sw_irq != TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC) { + goto RETURN; + } + } +#ifdef CONFIG_TOSHIBA_FPCIB0 + { + if (tx4927_using_backplane) { + outb(0x0A, 0x20); + level4 = inb(0x20) & 0xff; + if (level4) { + sw_irq = + TOSHIBA_RBTX4927_IRQ_ISA_BEG + + bit2num(level4); + if (sw_irq != + TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_ISA) { + goto RETURN; + } + } + + outb(0x0A, 0xA0); + level5 = inb(0xA0) & 0xff; + if (level5) { + sw_irq = + TOSHIBA_RBTX4927_IRQ_ISA_MID + + bit2num(level5); + goto RETURN; + } + } + } +#endif + + RETURN: + return (sw_irq); +} + +//#define TOSHIBA_RBTX4927_PIC_ACTION(s) { no_action, 0, CPU_MASK_NONE, s, NULL, NULL } +#define TOSHIBA_RBTX4927_PIC_ACTION(s) { no_action, SA_SHIRQ, CPU_MASK_NONE, s, NULL, NULL } +static struct irqaction toshiba_rbtx4927_irq_ioc_action = +TOSHIBA_RBTX4927_PIC_ACTION(TOSHIBA_RBTX4927_IOC_NAME); +#ifdef CONFIG_TOSHIBA_FPCIB0 +static struct irqaction toshiba_rbtx4927_irq_isa_master = +TOSHIBA_RBTX4927_PIC_ACTION(TOSHIBA_RBTX4927_ISA_NAME "/M"); +static struct irqaction toshiba_rbtx4927_irq_isa_slave = +TOSHIBA_RBTX4927_PIC_ACTION(TOSHIBA_RBTX4927_ISA_NAME "/S"); +#endif + + +/**********************************************************************************/ +/* Functions for ioc */ +/**********************************************************************************/ + + +static void __init toshiba_rbtx4927_irq_ioc_init(void) +{ + int i; + + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_INIT, + "beg=%d end=%d\n", + TOSHIBA_RBTX4927_IRQ_IOC_BEG, + TOSHIBA_RBTX4927_IRQ_IOC_END); + + for (i = TOSHIBA_RBTX4927_IRQ_IOC_BEG; + i <= TOSHIBA_RBTX4927_IRQ_IOC_END; i++) { + irq_desc[i].status = IRQ_DISABLED; + irq_desc[i].action = 0; + irq_desc[i].depth = 3; + irq_desc[i].handler = &toshiba_rbtx4927_irq_ioc_type; + } + + setup_irq(TOSHIBA_RBTX4927_IRQ_NEST_IOC_ON_PIC, + &toshiba_rbtx4927_irq_ioc_action); + + return; +} + +static unsigned int toshiba_rbtx4927_irq_ioc_startup(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_STARTUP, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + toshiba_rbtx4927_irq_ioc_enable(irq); + + return (0); +} + + +static void toshiba_rbtx4927_irq_ioc_shutdown(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_SHUTDOWN, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + toshiba_rbtx4927_irq_ioc_disable(irq); + + return; +} + + +static void toshiba_rbtx4927_irq_ioc_enable(unsigned int irq) +{ + unsigned long flags; + volatile unsigned char v; + + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_ENABLE, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + spin_lock_irqsave(&toshiba_rbtx4927_ioc_lock, flags); + + v = TX4927_RD08(TOSHIBA_RBTX4927_IOC_INTR_ENAB); + v |= (1 << (irq - TOSHIBA_RBTX4927_IRQ_IOC_BEG)); + TOSHIBA_RBTX4927_WR08(TOSHIBA_RBTX4927_IOC_INTR_ENAB, v); + + spin_unlock_irqrestore(&toshiba_rbtx4927_ioc_lock, flags); + + return; +} + + +static void toshiba_rbtx4927_irq_ioc_disable(unsigned int irq) +{ + unsigned long flags; + volatile unsigned char v; + + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_DISABLE, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + spin_lock_irqsave(&toshiba_rbtx4927_ioc_lock, flags); + + v = TX4927_RD08(TOSHIBA_RBTX4927_IOC_INTR_ENAB); + v &= ~(1 << (irq - TOSHIBA_RBTX4927_IRQ_IOC_BEG)); + TOSHIBA_RBTX4927_WR08(TOSHIBA_RBTX4927_IOC_INTR_ENAB, v); + + spin_unlock_irqrestore(&toshiba_rbtx4927_ioc_lock, flags); + + return; +} + + +static void toshiba_rbtx4927_irq_ioc_mask_and_ack(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_MASK, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + toshiba_rbtx4927_irq_ioc_disable(irq); + + return; +} + + +static void toshiba_rbtx4927_irq_ioc_end(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_IOC_ENDIRQ, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_IOC_BEG + || irq > TOSHIBA_RBTX4927_IRQ_IOC_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) { + toshiba_rbtx4927_irq_ioc_enable(irq); + } + + return; +} + + +/**********************************************************************************/ +/* Functions for isa */ +/**********************************************************************************/ + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void __init toshiba_rbtx4927_irq_isa_init(void) +{ + int i; + + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_INIT, + "beg=%d end=%d\n", + TOSHIBA_RBTX4927_IRQ_ISA_BEG, + TOSHIBA_RBTX4927_IRQ_ISA_END); + + for (i = TOSHIBA_RBTX4927_IRQ_ISA_BEG; + i <= TOSHIBA_RBTX4927_IRQ_ISA_END; i++) { + irq_desc[i].status = IRQ_DISABLED; + irq_desc[i].action = 0; + irq_desc[i].depth = + ((i < TOSHIBA_RBTX4927_IRQ_ISA_MID) ? (4) : (5)); + irq_desc[i].handler = &toshiba_rbtx4927_irq_isa_type; + } + + setup_irq(TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_IOC, + &toshiba_rbtx4927_irq_isa_master); + setup_irq(TOSHIBA_RBTX4927_IRQ_NEST_ISA_ON_ISA, + &toshiba_rbtx4927_irq_isa_slave); + + /* make sure we are looking at IRR (not ISR) */ + outb(0x0A, 0x20); + outb(0x0A, 0xA0); + + return; +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static unsigned int toshiba_rbtx4927_irq_isa_startup(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_STARTUP, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + toshiba_rbtx4927_irq_isa_enable(irq); + + return (0); +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void toshiba_rbtx4927_irq_isa_shutdown(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_SHUTDOWN, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + toshiba_rbtx4927_irq_isa_disable(irq); + + return; +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void toshiba_rbtx4927_irq_isa_enable(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_ENABLE, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + enable_8259A_irq(irq); + + return; +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void toshiba_rbtx4927_irq_isa_disable(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_DISABLE, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + disable_8259A_irq(irq); + + return; +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void toshiba_rbtx4927_irq_isa_mask_and_ack(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_MASK, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + mask_and_ack_8259A(irq); + + return; +} +#endif + + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void toshiba_rbtx4927_irq_isa_end(unsigned int irq) +{ + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_ISA_ENDIRQ, + "irq=%d\n", irq); + + if (irq < TOSHIBA_RBTX4927_IRQ_ISA_BEG + || irq > TOSHIBA_RBTX4927_IRQ_ISA_END) { + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_EROR, + "bad irq=%d\n", irq); + panic("\n"); + } + + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) { + toshiba_rbtx4927_irq_isa_enable(irq); + } + + return; +} +#endif + + +void __init arch_init_irq(void) +{ + extern void tx4927_irq_init(void); + + local_irq_disable(); + + tx4927_irq_init(); + toshiba_rbtx4927_irq_ioc_init(); +#ifdef CONFIG_TOSHIBA_FPCIB0 + { + if (tx4927_using_backplane) { + toshiba_rbtx4927_irq_isa_init(); + } + } +#endif + + wbflush(); + + return; +} + +void toshiba_rbtx4927_irq_dump(char *key) +{ +#ifdef TOSHIBA_RBTX4927_IRQ_DEBUG + { + u32 i, j = 0; + for (i = 0; i < NR_IRQS; i++) { + if (strcmp(irq_desc[i].handler->typename, "none") + == 0) + continue; + + if ((i >= 1) + && (irq_desc[i - 1].handler->typename == + irq_desc[i].handler->typename)) { + j++; + } else { + j = 0; + } + TOSHIBA_RBTX4927_IRQ_DPRINTK + (TOSHIBA_RBTX4927_IRQ_INFO, + "%s irq=0x%02x/%3d s=0x%08x h=0x%08x a=0x%08x ah=0x%08x d=%1d n=%s/%02d\n", + key, i, i, irq_desc[i].status, + (u32) irq_desc[i].handler, + (u32) irq_desc[i].action, + (u32) (irq_desc[i].action ? irq_desc[i]. + action->handler : 0), + irq_desc[i].depth, + irq_desc[i].handler->typename, j); + } + } +#endif + return; +} + +void toshiba_rbtx4927_irq_dump_pics(char *s) +{ + u32 level0_m; + u32 level0_s; + u32 level1_m; + u32 level1_s; + u32 level2; + u32 level2_p; + u32 level2_s; + u32 level3_m; + u32 level3_s; + u32 level4_m; + u32 level4_s; + u32 level5_m; + u32 level5_s; + + if (s == NULL) + s = "null"; + + level0_m = (read_c0_status() & 0x0000ff00) >> 8; + level0_s = (read_c0_cause() & 0x0000ff00) >> 8; + + level1_m = level0_m; + level1_s = level0_s & 0x87; + + level2 = TX4927_RD(0xff1ff6a0); + level2_p = (((level2 & 0x10000)) ? 0 : 1); + level2_s = (((level2 & 0x1f) == 0x1f) ? 0 : (level2 & 0x1f)); + + level3_m = reg_rd08(TOSHIBA_RBTX4927_IOC_INTR_ENAB) & 0x1f; + level3_s = reg_rd08(TOSHIBA_RBTX4927_IOC_INTR_STAT) & 0x1f; + + level4_m = inb(0x21); + outb(0x0A, 0x20); + level4_s = inb(0x20); + + level5_m = inb(0xa1); + outb(0x0A, 0xa0); + level5_s = inb(0xa0); + + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "dump_raw_pic() "); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "cp0:m=0x%02x/s=0x%02x ", level0_m, + level0_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "cp0:m=0x%02x/s=0x%02x ", level1_m, + level1_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "pic:e=0x%02x/s=0x%02x ", level2_p, + level2_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "ioc:m=0x%02x/s=0x%02x ", level3_m, + level3_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "sbm:m=0x%02x/s=0x%02x ", level4_m, + level4_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, + "sbs:m=0x%02x/s=0x%02x ", level5_m, + level5_s); + TOSHIBA_RBTX4927_IRQ_DPRINTK(TOSHIBA_RBTX4927_IRQ_INFO, "[%s]\n", + s); + + return; +} |