diff options
Diffstat (limited to 'arch/sh/boards/se/7206/irq.c')
-rw-r--r-- | arch/sh/boards/se/7206/irq.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/arch/sh/boards/se/7206/irq.c b/arch/sh/boards/se/7206/irq.c deleted file mode 100644 index 9d5bfc7..0000000 --- a/arch/sh/boards/se/7206/irq.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * linux/arch/sh/boards/se/7206/irq.c - * - * Copyright (C) 2005,2006 Yoshinori Sato - * - * Hitachi SolutionEngine Support. - * - */ -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/io.h> -#include <linux/interrupt.h> -#include <asm/se7206.h> - -#define INTSTS0 0x31800000 -#define INTSTS1 0x31800002 -#define INTMSK0 0x31800004 -#define INTMSK1 0x31800006 -#define INTSEL 0x31800008 - -#define IRQ0_IRQ 64 -#define IRQ1_IRQ 65 -#define IRQ3_IRQ 67 - -#define INTC_IPR01 0xfffe0818 -#define INTC_ICR1 0xfffe0802 - -static void disable_se7206_irq(unsigned int irq) -{ - unsigned short val; - unsigned short mask = 0xffff ^ (0x0f << 4 * (3 - (IRQ0_IRQ - irq))); - unsigned short msk0,msk1; - - /* Set the priority in IPR to 0 */ - val = ctrl_inw(INTC_IPR01); - val &= mask; - ctrl_outw(val, INTC_IPR01); - /* FPGA mask set */ - msk0 = ctrl_inw(INTMSK0); - msk1 = ctrl_inw(INTMSK1); - - switch (irq) { - case IRQ0_IRQ: - msk0 |= 0x0010; - break; - case IRQ1_IRQ: - msk0 |= 0x000f; - break; - case IRQ3_IRQ: - msk0 |= 0x0f00; - msk1 |= 0x00ff; - break; - } - ctrl_outw(msk0, INTMSK0); - ctrl_outw(msk1, INTMSK1); -} - -static void enable_se7206_irq(unsigned int irq) -{ - unsigned short val; - unsigned short value = (0x0001 << 4 * (3 - (IRQ0_IRQ - irq))); - unsigned short msk0,msk1; - - /* Set priority in IPR back to original value */ - val = ctrl_inw(INTC_IPR01); - val |= value; - ctrl_outw(val, INTC_IPR01); - - /* FPGA mask reset */ - msk0 = ctrl_inw(INTMSK0); - msk1 = ctrl_inw(INTMSK1); - - switch (irq) { - case IRQ0_IRQ: - msk0 &= ~0x0010; - break; - case IRQ1_IRQ: - msk0 &= ~0x000f; - break; - case IRQ3_IRQ: - msk0 &= ~0x0f00; - msk1 &= ~0x00ff; - break; - } - ctrl_outw(msk0, INTMSK0); - ctrl_outw(msk1, INTMSK1); -} - -static void eoi_se7206_irq(unsigned int irq) -{ - unsigned short sts0,sts1; - - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_se7206_irq(irq); - /* FPGA isr clear */ - sts0 = ctrl_inw(INTSTS0); - sts1 = ctrl_inw(INTSTS1); - - switch (irq) { - case IRQ0_IRQ: - sts0 &= ~0x0010; - break; - case IRQ1_IRQ: - sts0 &= ~0x000f; - break; - case IRQ3_IRQ: - sts0 &= ~0x0f00; - sts1 &= ~0x00ff; - break; - } - ctrl_outw(sts0, INTSTS0); - ctrl_outw(sts1, INTSTS1); -} - -static struct irq_chip se7206_irq_chip __read_mostly = { - .name = "SE7206-FPGA", - .mask = disable_se7206_irq, - .unmask = enable_se7206_irq, - .mask_ack = disable_se7206_irq, - .eoi = eoi_se7206_irq, -}; - -static void make_se7206_irq(unsigned int irq) -{ - disable_irq_nosync(irq); - set_irq_chip_and_handler_name(irq, &se7206_irq_chip, - handle_level_irq, "level"); - disable_se7206_irq(irq); -} - -/* - * Initialize IRQ setting - */ -void __init init_se7206_IRQ(void) -{ - make_se7206_irq(IRQ0_IRQ); /* SMC91C111 */ - make_se7206_irq(IRQ1_IRQ); /* ATA */ - make_se7206_irq(IRQ3_IRQ); /* SLOT / PCM */ - ctrl_outw(inw(INTC_ICR1) | 0x000b ,INTC_ICR1 ) ; /* ICR1 */ - - /* FPGA System register setup*/ - ctrl_outw(0x0000,INTSTS0); /* Clear INTSTS0 */ - ctrl_outw(0x0000,INTSTS1); /* Clear INTSTS1 */ - /* IRQ0=LAN, IRQ1=ATA, IRQ3=SLT,PCM */ - ctrl_outw(0x0001,INTSEL); -} |