diff options
Diffstat (limited to 'arch/mips/au1000/pb1200/irqmap.c')
| -rw-r--r-- | arch/mips/au1000/pb1200/irqmap.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c deleted file mode 100644 index 59e70e5cf32..00000000000 --- a/arch/mips/au1000/pb1200/irqmap.c +++ /dev/null @@ -1,182 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Au1xxx irq map table - * - * 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. - */ -#include <linux/config.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/kernel_stat.h> -#include <linux/module.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/timex.h> -#include <linux/slab.h> -#include <linux/random.h> -#include <linux/delay.h> - -#include <asm/bitops.h> -#include <asm/bootinfo.h> -#include <asm/io.h> -#include <asm/mipsregs.h> -#include <asm/system.h> -#include <asm/mach-au1x00/au1000.h> - -#ifdef CONFIG_MIPS_PB1200 -#include <asm/mach-pb1x00/pb1200.h> -#endif - -#ifdef CONFIG_MIPS_DB1200 -#include <asm/mach-db1x00/db1200.h> -#define PB1200_INT_BEGIN DB1200_INT_BEGIN -#define PB1200_INT_END DB1200_INT_END -#endif - -au1xxx_irq_map_t au1xxx_irq_map[] = { - { AU1000_GPIO_7, INTC_INT_LOW_LEVEL, 0 }, // This is exteranl interrupt cascade -}; - -int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t); - -/* - * Support for External interrupts on the PbAu1200 Development platform. - */ -static volatile int pb1200_cascade_en=0; - -irqreturn_t pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs) -{ - unsigned short bisr = bcsr->int_status; - int extirq_nr = 0; - - /* Clear all the edge interrupts. This has no effect on level */ - bcsr->int_status = bisr; - for( ; bisr; bisr &= (bisr-1) ) - { - extirq_nr = (PB1200_INT_BEGIN-1) + au_ffs(bisr); - /* Ack and dispatch IRQ */ - do_IRQ(extirq_nr,regs); - } - return IRQ_RETVAL(1); -} - -inline void pb1200_enable_irq(unsigned int irq_nr) -{ - bcsr->intset_mask = 1<<(irq_nr - PB1200_INT_BEGIN); - bcsr->intset = 1<<(irq_nr - PB1200_INT_BEGIN); -} - -inline void pb1200_disable_irq(unsigned int irq_nr) -{ - bcsr->intclr_mask = 1<<(irq_nr - PB1200_INT_BEGIN); - bcsr->intclr = 1<<(irq_nr - PB1200_INT_BEGIN); -} - -static unsigned int pb1200_startup_irq( unsigned int irq_nr ) -{ - if (++pb1200_cascade_en == 1) - { - request_irq(AU1000_GPIO_7, &pb1200_cascade_handler, - 0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler ); -#ifdef CONFIG_MIPS_PB1200 - /* We have a problem with CPLD rev3. Enable a workaround */ - if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3) - { - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n"); - printk("updated to latest revision. This software will not\n"); - printk("work on anything less than CPLD rev4\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - printk("\nWARNING!!!\n"); - while(1); - } -#endif - } - pb1200_enable_irq(irq_nr); - return 0; -} - -static void pb1200_shutdown_irq( unsigned int irq_nr ) -{ - pb1200_disable_irq(irq_nr); - if (--pb1200_cascade_en == 0) - { - free_irq(AU1000_GPIO_7,&pb1200_cascade_handler ); - } - return; -} - -static inline void pb1200_mask_and_ack_irq(unsigned int irq_nr) -{ - pb1200_disable_irq( irq_nr ); -} - -static void pb1200_end_irq(unsigned int irq_nr) -{ - if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))) { - pb1200_enable_irq(irq_nr); - } -} - -static struct hw_interrupt_type external_irq_type = -{ -#ifdef CONFIG_MIPS_PB1200 - "Pb1200 Ext", -#endif -#ifdef CONFIG_MIPS_DB1200 - "Db1200 Ext", -#endif - pb1200_startup_irq, - pb1200_shutdown_irq, - pb1200_enable_irq, - pb1200_disable_irq, - pb1200_mask_and_ack_irq, - pb1200_end_irq, - NULL -}; - -void _board_init_irq(void) -{ - int irq_nr; - - for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++) - { - irq_desc[irq_nr].handler = &external_irq_type; - pb1200_disable_irq(irq_nr); - } - - /* GPIO_7 can not be hooked here, so it is hooked upon first - request of any source attached to the cascade */ -} - |