diff options
Diffstat (limited to 'arch/sh/kernel/cpu/irq/pint.c')
| -rw-r--r-- | arch/sh/kernel/cpu/irq/pint.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/arch/sh/kernel/cpu/irq/pint.c b/arch/sh/kernel/cpu/irq/pint.c deleted file mode 100644 index 95d6024fe1a..00000000000 --- a/arch/sh/kernel/cpu/irq/pint.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * arch/sh/kernel/cpu/irq/pint.c - Interrupt handling for PINT-based IRQs. - * - * Copyright (C) 1999 Niibe Yutaka & Takeshi Yaegashi - * Copyright (C) 2000 Kazumoto Kojima - * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp> - * - * 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/config.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/module.h> - -#include <asm/system.h> -#include <asm/io.h> -#include <asm/machvec.h> - -static unsigned char pint_map[256]; -static unsigned long portcr_mask; - -static void enable_pint_irq(unsigned int irq); -static void disable_pint_irq(unsigned int irq); - -/* shutdown is same as "disable" */ -#define shutdown_pint_irq disable_pint_irq - -static void mask_and_ack_pint(unsigned int); -static void end_pint_irq(unsigned int irq); - -static unsigned int startup_pint_irq(unsigned int irq) -{ - enable_pint_irq(irq); - return 0; /* never anything pending */ -} - -static struct hw_interrupt_type pint_irq_type = { - .typename = "PINT-IRQ", - .startup = startup_pint_irq, - .shutdown = shutdown_pint_irq, - .enable = enable_pint_irq, - .disable = disable_pint_irq, - .ack = mask_and_ack_pint, - .end = end_pint_irq -}; - -static void disable_pint_irq(unsigned int irq) -{ - unsigned long val, flags; - - local_irq_save(flags); - val = ctrl_inw(INTC_INTER); - val &= ~(1 << (irq - PINT_IRQ_BASE)); - ctrl_outw(val, INTC_INTER); /* disable PINTn */ - portcr_mask &= ~(3 << (irq - PINT_IRQ_BASE)*2); - local_irq_restore(flags); -} - -static void enable_pint_irq(unsigned int irq) -{ - unsigned long val, flags; - - local_irq_save(flags); - val = ctrl_inw(INTC_INTER); - val |= 1 << (irq - PINT_IRQ_BASE); - ctrl_outw(val, INTC_INTER); /* enable PINTn */ - portcr_mask |= 3 << (irq - PINT_IRQ_BASE)*2; - local_irq_restore(flags); -} - -static void mask_and_ack_pint(unsigned int irq) -{ - disable_pint_irq(irq); -} - -static void end_pint_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - enable_pint_irq(irq); -} - -void make_pint_irq(unsigned int irq) -{ - disable_irq_nosync(irq); - irq_desc[irq].handler = &pint_irq_type; - disable_pint_irq(irq); -} - -void __init init_IRQ_pint(void) -{ - int i; - - make_ipr_irq(PINT0_IRQ, PINT0_IPR_ADDR, PINT0_IPR_POS, PINT0_PRIORITY); - make_ipr_irq(PINT8_IRQ, PINT8_IPR_ADDR, PINT8_IPR_POS, PINT8_PRIORITY); - - enable_irq(PINT0_IRQ); - enable_irq(PINT8_IRQ); - - for(i = 0; i < 16; i++) - make_pint_irq(PINT_IRQ_BASE + i); - - for(i = 0; i < 256; i++) { - if (i & 1) - pint_map[i] = 0; - else if (i & 2) - pint_map[i] = 1; - else if (i & 4) - pint_map[i] = 2; - else if (i & 8) - pint_map[i] = 3; - else if (i & 0x10) - pint_map[i] = 4; - else if (i & 0x20) - pint_map[i] = 5; - else if (i & 0x40) - pint_map[i] = 6; - else if (i & 0x80) - pint_map[i] = 7; - } -} - -int ipr_irq_demux(int irq) -{ - unsigned long creg, dreg, d, sav; - - if (irq == PINT0_IRQ) { -#if defined(CONFIG_CPU_SUBTYPE_SH7707) - creg = PORT_PACR; - dreg = PORT_PADR; -#else - creg = PORT_PCCR; - dreg = PORT_PCDR; -#endif - sav = ctrl_inw(creg); - ctrl_outw(sav | portcr_mask, creg); - d = (~ctrl_inb(dreg) ^ ctrl_inw(INTC_ICR2)) & - ctrl_inw(INTC_INTER) & 0xff; - ctrl_outw(sav, creg); - - if (d == 0) - return irq; - - return PINT_IRQ_BASE + pint_map[d]; - } else if (irq == PINT8_IRQ) { -#if defined(CONFIG_CPU_SUBTYPE_SH7707) - creg = PORT_PBCR; - dreg = PORT_PBDR; -#else - creg = PORT_PFCR; - dreg = PORT_PFDR; -#endif - sav = ctrl_inw(creg); - ctrl_outw(sav | (portcr_mask >> 16), creg); - d = (~ctrl_inb(dreg) ^ (ctrl_inw(INTC_ICR2) >> 8)) & - (ctrl_inw(INTC_INTER) >> 8) & 0xff; - ctrl_outw(sav, creg); - - if (d == 0) - return irq; - - return PINT_IRQ_BASE + 8 + pint_map[d]; - } - - return irq; -} - |
