diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/kernel/cpu/irq/Makefile | 1 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/irq/intc-sh5.c | 257 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh5/Makefile | 4 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh5/setup-sh5-101.c | 15 | ||||
| -rw-r--r-- | arch/sh/mach-cayman/Makefile | 8 | ||||
| -rw-r--r-- | arch/sh/mach-cayman/iomap.c | 22 | ||||
| -rw-r--r-- | arch/sh/mach-cayman/irq.c | 26 | ||||
| -rw-r--r-- | arch/sh/mach-cayman/setup.c | 94 |
8 files changed, 294 insertions, 133 deletions
diff --git a/arch/sh/kernel/cpu/irq/Makefile b/arch/sh/kernel/cpu/irq/Makefile index 81d37e948b8..cc1836e47a5 100644 --- a/arch/sh/kernel/cpu/irq/Makefile +++ b/arch/sh/kernel/cpu/irq/Makefile @@ -4,5 +4,6 @@ obj-y += intc.o obj-$(CONFIG_SUPERH32) += imask.o +obj-$(CONFIG_CPU_SH5) += intc-sh5.o obj-$(CONFIG_CPU_HAS_IPR_IRQ) += ipr.o obj-$(CONFIG_CPU_HAS_MASKREG_IRQ) += maskreg.o diff --git a/arch/sh/kernel/cpu/irq/intc-sh5.c b/arch/sh/kernel/cpu/irq/intc-sh5.c new file mode 100644 index 00000000000..49b845a31ff --- /dev/null +++ b/arch/sh/kernel/cpu/irq/intc-sh5.c @@ -0,0 +1,257 @@ +/* + * 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. + * + * arch/sh64/kernel/irq_intc.c + * + * Copyright (C) 2000, 2001 Paolo Alberelli + * Copyright (C) 2003 Paul Mundt + * + * Interrupt Controller support for SH5 INTC. + * Per-interrupt selective. IRLM=0 (Fixed priority) is not + * supported being useless without a cascaded interrupt + * controller. + * + */ +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/bitops.h> +#include <asm/cpu/irq.h> +#include <asm/page.h> + +/* + * Maybe the generic Peripheral block could move to a more + * generic include file. INTC Block will be defined here + * and only here to make INTC self-contained in a single + * file. + */ +#define INTC_BLOCK_OFFSET 0x01000000 + +/* Base */ +#define INTC_BASE PHYS_PERIPHERAL_BLOCK + \ + INTC_BLOCK_OFFSET + +/* Address */ +#define INTC_ICR_SET (intc_virt + 0x0) +#define INTC_ICR_CLEAR (intc_virt + 0x8) +#define INTC_INTPRI_0 (intc_virt + 0x10) +#define INTC_INTSRC_0 (intc_virt + 0x50) +#define INTC_INTSRC_1 (intc_virt + 0x58) +#define INTC_INTREQ_0 (intc_virt + 0x60) +#define INTC_INTREQ_1 (intc_virt + 0x68) +#define INTC_INTENB_0 (intc_virt + 0x70) +#define INTC_INTENB_1 (intc_virt + 0x78) +#define INTC_INTDSB_0 (intc_virt + 0x80) +#define INTC_INTDSB_1 (intc_virt + 0x88) + +#define INTC_ICR_IRLM 0x1 +#define INTC_INTPRI_PREGS 8 /* 8 Priority Registers */ +#define INTC_INTPRI_PPREG 8 /* 8 Priorities per Register */ + + +/* + * Mapper between the vector ordinal and the IRQ number + * passed to kernel/device drivers. + */ +int intc_evt_to_irq[(0xE20/0x20)+1] = { + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x000 - 0x0E0 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x100 - 0x1E0 */ + 0, 0, 0, 0, 0, 1, 0, 0, /* 0x200 - 0x2E0 */ + 2, 0, 0, 3, 0, 0, 0, -1, /* 0x300 - 0x3E0 */ + 32, 33, 34, 35, 36, 37, 38, -1, /* 0x400 - 0x4E0 */ + -1, -1, -1, 63, -1, -1, -1, -1, /* 0x500 - 0x5E0 */ + -1, -1, 18, 19, 20, 21, 22, -1, /* 0x600 - 0x6E0 */ + 39, 40, 41, 42, -1, -1, -1, -1, /* 0x700 - 0x7E0 */ + 4, 5, 6, 7, -1, -1, -1, -1, /* 0x800 - 0x8E0 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x900 - 0x9E0 */ + 12, 13, 14, 15, 16, 17, -1, -1, /* 0xA00 - 0xAE0 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xB00 - 0xBE0 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xC00 - 0xCE0 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xD00 - 0xDE0 */ + -1, -1 /* 0xE00 - 0xE20 */ +}; + +/* + * Opposite mapper. + */ +static int IRQ_to_vectorN[NR_INTC_IRQS] = { + 0x12, 0x15, 0x18, 0x1B, 0x40, 0x41, 0x42, 0x43, /* 0- 7 */ + -1, -1, -1, -1, 0x50, 0x51, 0x52, 0x53, /* 8-15 */ + 0x54, 0x55, 0x32, 0x33, 0x34, 0x35, 0x36, -1, /* 16-23 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 24-31 */ + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x38, /* 32-39 */ + 0x39, 0x3A, 0x3B, -1, -1, -1, -1, -1, /* 40-47 */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 48-55 */ + -1, -1, -1, -1, -1, -1, -1, 0x2B, /* 56-63 */ + +}; + +static unsigned long intc_virt; + +static unsigned int startup_intc_irq(unsigned int irq); +static void shutdown_intc_irq(unsigned int irq); +static void enable_intc_irq(unsigned int irq); +static void disable_intc_irq(unsigned int irq); +static void mask_and_ack_intc(unsigned int); +static void end_intc_irq(unsigned int irq); + +static struct hw_interrupt_type intc_irq_type = { + .typename = "INTC", + .startup = startup_intc_irq, + .shutdown = shutdown_intc_irq, + .enable = enable_intc_irq, + .disable = disable_intc_irq, + .ack = mask_and_ack_intc, + .end = end_intc_irq +}; + +static int irlm; /* IRL mode */ + +static unsigned int startup_intc_irq(unsigned int irq) +{ + enable_intc_irq(irq); + return 0; /* never anything pending */ +} + +static void shutdown_intc_irq(unsigned int irq) +{ + disable_intc_irq(irq); +} + +static void enable_intc_irq(unsigned int irq) +{ + unsigned long reg; + unsigned long bitmask; + + if ((irq <= IRQ_IRL3) && (irlm == NO_PRIORITY)) + printk("Trying to use straight IRL0-3 with an encoding platform.\n"); + + if (irq < 32) { + reg = INTC_INTENB_0; + bitmask = 1 << irq; + } else { + reg = INTC_INTENB_1; + bitmask = 1 << (irq - 32); + } + + ctrl_outl(bitmask, reg); +} + +static void disable_intc_irq(unsigned int irq) +{ + unsigned long reg; + unsigned long bitmask; + + if (irq < 32) { + reg = INTC_INTDSB_0; + bitmask = 1 << irq; + } else { + reg = INTC_INTDSB_1; + bitmask = 1 << (irq - 32); + } + + ctrl_outl(bitmask, reg); +} + +static void mask_and_ack_intc(unsigned int irq) +{ + disable_intc_irq(irq); +} + +static void end_intc_irq(unsigned int irq) +{ + enable_intc_irq(irq); +} + +/* For future use, if we ever support IRLM=0) */ +void make_intc_irq(unsigned int irq) +{ + disable_irq_nosync(irq); + irq_desc[irq].chip = &intc_irq_type; + disable_intc_irq(irq); +} + +#if defined(CONFIG_PROC_FS) && defined(CONFIG_SYSCTL) +int intc_irq_describe(char* p, int irq) +{ + if (irq < NR_INTC_IRQS) + return sprintf(p, "(0x%3x)", IRQ_to_vectorN[irq]*0x20); + else + return 0; +} +#endif + +void __init plat_irq_setup(void) +{ + unsigned long long __dummy0, __dummy1=~0x00000000100000f0; + unsigned long reg; + unsigned long data; + int i; + + intc_virt = onchip_remap(INTC_BASE, 1024, "INTC"); + if (!intc_virt) { + panic("Unable to remap INTC\n"); + } + + + /* Set default: per-line enable/disable, priority driven ack/eoi */ + for (i = 0; i < NR_INTC_IRQS; i++) { + if (platform_int_priority[i] != NO_PRIORITY) { + irq_desc[i].chip = &intc_irq_type; + } + } + + + /* Disable all interrupts and set all priorities to 0 to avoid trouble */ + ctrl_outl(-1, INTC_INTDSB_0); + ctrl_outl(-1, INTC_INTDSB_1); + + for (reg = INTC_INTPRI_0, i = 0; i < INTC_INTPRI_PREGS; i++, reg += 8) + ctrl_outl( NO_PRIORITY, reg); + + + /* Set IRLM */ + /* If all the priorities are set to 'no priority', then + * assume we are using encoded mode. + */ + irlm = platform_int_priority[IRQ_IRL0] + platform_int_priority[IRQ_IRL1] + \ + platform_int_priority[IRQ_IRL2] + platform_int_priority[IRQ_IRL3]; + + if (irlm == NO_PRIORITY) { + /* IRLM = 0 */ + reg = INTC_ICR_CLEAR; + i = IRQ_INTA; + printk("Trying to use encoded IRL0-3. IRLs unsupported.\n"); + } else { + /* IRLM = 1 */ + reg = INTC_ICR_SET; + i = IRQ_IRL0; + } + ctrl_outl(INTC_ICR_IRLM, reg); + + /* Set interrupt priorities according to platform description */ + for (data = 0, reg = INTC_INTPRI_0; i < NR_INTC_IRQS; i++) { + data |= platform_int_priority[i] << ((i % INTC_INTPRI_PPREG) * 4); + if ((i % INTC_INTPRI_PPREG) == (INTC_INTPRI_PPREG - 1)) { + /* Upon the 7th, set Priority Register */ + ctrl_outl(data, reg); + data = 0; + reg += 8; + } + } + + /* + * And now let interrupts come in. + * sti() is not enough, we need to + * lower priority, too. + */ + __asm__ __volatile__("getcon " __SR ", %0\n\t" + "and %0, %1, %0\n\t" + "putcon %0, " __SR "\n\t" + : "=&r" (__dummy0) + : "r" (__dummy1)); +} diff --git a/arch/sh/kernel/cpu/sh5/Makefile b/arch/sh/kernel/cpu/sh5/Makefile index 0ef257b72e5..8646363e9de 100644 --- a/arch/sh/kernel/cpu/sh5/Makefile +++ b/arch/sh/kernel/cpu/sh5/Makefile @@ -5,7 +5,3 @@ obj-y := entry.o probe.o switchto.o obj-$(CONFIG_SH_FPU) += fpu.o obj-$(CONFIG_KALLSYMS) += unwind.o - -# CPU subtype setup -obj-$(CONFIG_CPU_SUBTYPE_SH5_101) += setup-sh5-101.o -obj-$(CONFIG_CPU_SUBTYPE_SH5_103) += setup-sh5-101.o diff --git a/arch/sh/kernel/cpu/sh5/setup-sh5-101.c b/arch/sh/kernel/cpu/sh5/setup-sh5-101.c deleted file mode 100644 index 3680012d710..00000000000 --- a/arch/sh/kernel/cpu/sh5/setup-sh5-101.c +++ /dev/null @@ -1,15 +0,0 @@ -/* - * SH5-101 Setup - * - * Copyright (C) 2007 Paul Mundt - * - * 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/init.h> - -void __init plat_irq_setup(void) -{ - /* do nothing - all IRL interrupts are handled by the board code */ -} diff --git a/arch/sh/mach-cayman/Makefile b/arch/sh/mach-cayman/Makefile index 67a2258bf8c..489a8f86736 100644 --- a/arch/sh/mach-cayman/Makefile +++ b/arch/sh/mach-cayman/Makefile @@ -1,11 +1,5 @@ # # Makefile for the Hitachi Cayman specific parts of the kernel # -# Note! Dependencies are done automagically by 'make dep', which also -# removes any old dependencies. DON'T put your own dependencies here -# unless it's something special (ie not a .c file). -# - -obj-y := setup.o irq.o iomap.o +obj-y := setup.o irq.o obj-$(CONFIG_HEARTBEAT) += led.o - diff --git a/arch/sh/mach-cayman/iomap.c b/arch/sh/mach-cayman/iomap.c deleted file mode 100644 index a5c645f02d5..00000000000 --- a/arch/sh/mach-cayman/iomap.c +++ /dev/null @@ -1,22 +0,0 @@ -/* - * arch/sh64/mach-cayman/iomap.c - * - * Cayman iomap interface - * - * Copyright (C) 2004 Paul Mundt - * - * 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 <asm/io.h> -#include <asm/cayman.h> - -void __iomem *ioport_map(unsigned long port, unsigned int len) -{ - if (port < 0x400) - return (void __iomem *)((port << 2) | smsc_superio_virt); - - return (void __iomem *)port; -} - diff --git a/arch/sh/mach-cayman/irq.c b/arch/sh/mach-cayman/irq.c index aaad36d37d1..30ec7bebfaf 100644 --- a/arch/sh/mach-cayman/irq.c +++ b/arch/sh/mach-cayman/irq.c @@ -1,24 +1,26 @@ /* - * 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. - * - * arch/sh64/kernel/irq_cayman.c - * - * SH-5 Cayman Interrupt Support + * arch/sh/mach-cayman/irq.c - SH-5 Cayman Interrupt Support * * This file handles the board specific parts of the Cayman interrupt system * * Copyright (C) 2002 Stuart Menefy + * + * 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 <asm/irq.h> -#include <asm/page.h> -#include <asm/io.h> +#include <linux/io.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/signal.h> -#include <asm/cayman.h> +#include <asm/cpu/irq.h> +#include <asm/page.h> + +/* Setup for the SMSC FDC37C935 / LAN91C100FD */ +#define SMSC_IRQ IRQ_IRL1 + +/* Setup for PCI Bus 2, which transmits interrupts via the EPLD */ +#define PCI2_IRQ IRQ_IRL3 unsigned long epld_virt; diff --git a/arch/sh/mach-cayman/setup.c b/arch/sh/mach-cayman/setup.c index 726c520d7eb..8c9fa472d8f 100644 --- a/arch/sh/mach-cayman/setup.c +++ b/arch/sh/mach-cayman/setup.c @@ -1,28 +1,19 @@ /* - * 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. - * - * arch/sh64/mach-cayman/setup.c + * arch/sh/mach-cayman/setup.c * * SH5 Cayman support * - * This file handles the architecture-dependent parts of initialization + * Copyright (C) 2002 David J. Mckay & Benedict Gaster + * Copyright (C) 2003 - 2007 Paul Mundt * - * Copyright David J. Mckay. - * Needs major work! - * - * benedict.gaster@superh.com: 3rd May 2002 - * Added support for ramdisk, removing statically linked romfs at the same time. - * - * lethal@linux-sh.org: 15th May 2003 - * Use the generic procfs cpuinfo interface, just return a valid board name. + * 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/init.h> +#include <linux/io.h> #include <linux/kernel.h> -#include <asm/platform.h> -#include <asm/irq.h> -#include <asm/io.h> +#include <asm/cpu/irq.h> /* * Platform Dependent Interrupt Priorities. @@ -96,42 +87,6 @@ unsigned long smsc_superio_virt; -/* - * Platform dependent structures: maps and parms block. - */ -struct resource io_resources[] = { - /* To be updated with external devices */ -}; - -struct resource kram_resources[] = { - /* These must be last in the array */ - { .name = "Kernel code", .start = 0, .end = 0 }, - /* These must be last in the array */ - { .name = "Kernel data", .start = 0, .end = 0 } -}; - -struct resource xram_resources[] = { - /* To be updated with external devices */ -}; - -struct resource rom_resources[] = { - /* To be updated with external devices */ -}; - -struct sh64_platform platform_parms = { - .readonly_rootfs = 1, - .initial_root_dev = 0x0100, - .loader_type = 1, - .io_res_p = io_resources, - .io_res_count = ARRAY_SIZE(io_resources), - .kram_res_p = kram_resources, - .kram_res_count = ARRAY_SIZE(kram_resources), - .xram_res_p = xram_resources, - .xram_res_count = ARRAY_SIZE(xram_resources), - .rom_res_p = rom_resources, - .rom_res_count = ARRAY_SIZE(rom_resources), -}; - int platform_int_priority[NR_INTC_IRQS] = { IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ 0- 7 */ RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ 8-15 */ @@ -210,30 +165,23 @@ static int __init smsc_superio_setup(void) return 0; } - -/* This is grotty, but, because kernel is always referenced on the link line - * before any devices, this is safe. - */ __initcall(smsc_superio_setup); -void __init platform_setup(void) -{ - /* Cayman platform leaves the decision to head.S, for now */ - platform_parms.fpu_flags = fpu_in_use; -} - -void __init platform_monitor(void) +static void __iomem *cayman_ioport_map(unsigned long port, unsigned int len) { - /* Nothing yet .. */ -} + if (port < 0x400) { + extern unsigned long smsc_superio_virt; + return (void __iomem *)((port << 2) | smsc_superio_virt); + } -void __init platform_reserve(void) -{ - /* Nothing yet .. */ + return (void __iomem *)port; } -const char *get_system_type(void) -{ - return "Hitachi Cayman"; -} +extern void init_cayman_irq(void); +static struct sh_machine_vector mv_cayman __initmv = { + .mv_name = "Hitachi Cayman", + .mv_nr_irqs = 64, + .mv_ioport_map = cayman_ioport_map, + .mv_init_irq = init_cayman_irq, +}; |