diff options
Diffstat (limited to 'arch/sh/boards/renesas/systemh/irq.c')
| -rw-r--r-- | arch/sh/boards/renesas/systemh/irq.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/arch/sh/boards/renesas/systemh/irq.c b/arch/sh/boards/renesas/systemh/irq.c deleted file mode 100644 index 0ba2fe674c47..000000000000 --- a/arch/sh/boards/renesas/systemh/irq.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * linux/arch/sh/boards/renesas/systemh/irq.c - * - * Copyright (C) 2000 Kazumoto Kojima - * - * Hitachi SystemH Support. - * - * Modified for 7751 SystemH by - * Jonathan Short. - */ - -#include <linux/init.h> -#include <linux/irq.h> - -#include <linux/hdreg.h> -#include <linux/ide.h> -#include <asm/io.h> -#include <asm/systemh7751.h> -#include <asm/smc37c93x.h> - -/* address of external interrupt mask register - * address must be set prior to use these (maybe in init_XXX_irq()) - * XXX : is it better to use .config than specifying it in code? */ -static unsigned long *systemh_irq_mask_register = (unsigned long *)0xB3F10004; -static unsigned long *systemh_irq_request_register = (unsigned long *)0xB3F10000; - -/* forward declaration */ -static unsigned int startup_systemh_irq(unsigned int irq); -static void shutdown_systemh_irq(unsigned int irq); -static void enable_systemh_irq(unsigned int irq); -static void disable_systemh_irq(unsigned int irq); -static void mask_and_ack_systemh(unsigned int); -static void end_systemh_irq(unsigned int irq); - -/* hw_interrupt_type */ -static struct hw_interrupt_type systemh_irq_type = { - .typename = " SystemH Register", - .startup = startup_systemh_irq, - .shutdown = shutdown_systemh_irq, - .enable = enable_systemh_irq, - .disable = disable_systemh_irq, - .ack = mask_and_ack_systemh, - .end = end_systemh_irq -}; - -static unsigned int startup_systemh_irq(unsigned int irq) -{ - enable_systemh_irq(irq); - return 0; /* never anything pending */ -} - -static void shutdown_systemh_irq(unsigned int irq) -{ - disable_systemh_irq(irq); -} - -static void disable_systemh_irq(unsigned int irq) -{ - if (systemh_irq_mask_register) { - unsigned long val, mask = 0x01 << 1; - - /* Clear the "irq"th bit in the mask and set it in the request */ - val = ctrl_inl((unsigned long)systemh_irq_mask_register); - val &= ~mask; - ctrl_outl(val, (unsigned long)systemh_irq_mask_register); - - val = ctrl_inl((unsigned long)systemh_irq_request_register); - val |= mask; - ctrl_outl(val, (unsigned long)systemh_irq_request_register); - } -} - -static void enable_systemh_irq(unsigned int irq) -{ - if (systemh_irq_mask_register) { - unsigned long val, mask = 0x01 << 1; - - /* Set "irq"th bit in the mask register */ - val = ctrl_inl((unsigned long)systemh_irq_mask_register); - val |= mask; - ctrl_outl(val, (unsigned long)systemh_irq_mask_register); - } -} - -static void mask_and_ack_systemh(unsigned int irq) -{ - disable_systemh_irq(irq); -} - -static void end_systemh_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_systemh_irq(irq); -} - -void make_systemh_irq(unsigned int irq) -{ - disable_irq_nosync(irq); - irq_desc[irq].chip = &systemh_irq_type; - disable_systemh_irq(irq); -} - |
