From 86e4dd5add77ab809f5427391dfabb8f78cbcb58 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 25 May 2010 20:06:13 +0900 Subject: sh: support for platforms without PIO. This extends some of the existing special casing for HAS_IOPORT platforms and gets it to the point where platforms can begin to conditionally select it. The major changes here are that the PIO routines themselves go away completely, including all of the machvec port mapping wrappers. With this in place it's possible for any non-machvec abusing platform to disable PIO completely. At present this is left as an opt-in until the abusers are the odd ones out instead of the majority. Signed-off-by: Paul Mundt --- arch/sh/Kconfig | 5 ++++- arch/sh/include/asm/io.h | 8 ++++++++ arch/sh/include/asm/machvec.h | 9 +++++---- arch/sh/kernel/Makefile | 3 ++- arch/sh/kernel/io.c | 22 ---------------------- arch/sh/kernel/io_generic.c | 20 ++++++++++++++++++++ arch/sh/kernel/io_trapped.c | 4 ++++ arch/sh/kernel/machvec.c | 17 +++++++++++------ 8 files changed, 54 insertions(+), 34 deletions(-) (limited to 'arch') diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0e318c905ee..1eef24d04bb 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -9,7 +9,7 @@ config SUPERH def_bool y select EMBEDDED select HAVE_CLK - select HAVE_IDE + select HAVE_IDE if HAS_IOPORT select HAVE_LMB select HAVE_OPROFILE select HAVE_GENERIC_DMA_COHERENT @@ -174,6 +174,9 @@ config ARCH_HAS_DEFAULT_IDLE config ARCH_HAS_CPU_IDLE_WAIT def_bool y +config NO_IOPORT + bool + config IO_TRAPPED bool diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h index f689554e17c..b237d525d59 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -39,6 +39,8 @@ #include #include +#ifdef CONFIG_HAS_IOPORT + #define inb(p) sh_mv.mv_inb((p)) #define inw(p) sh_mv.mv_inw((p)) #define inl(p) sh_mv.mv_inl((p)) @@ -60,6 +62,8 @@ #define outsw(p,b,c) sh_mv.mv_outsw((p), (b), (c)) #define outsl(p,b,c) sh_mv.mv_outsl((p), (b), (c)) +#endif + #define __raw_writeb(v,a) (__chk_io_ptr(a), *(volatile u8 __force *)(a) = (v)) #define __raw_writew(v,a) (__chk_io_ptr(a), *(volatile u16 __force *)(a) = (v)) #define __raw_writel(v,a) (__chk_io_ptr(a), *(volatile u32 __force *)(a) = (v)) @@ -240,6 +244,8 @@ __BUILD_MEMORY_STRING(q, u64) #define IO_SPACE_LIMIT 0xffffffff +#ifdef CONFIG_HAS_IOPORT + /* * This function provides a method for the generic case where a * board-specific ioport_map simply needs to return the port + some @@ -255,6 +261,8 @@ static inline void __set_io_port_base(unsigned long pbase) #define __ioport_map(p, n) sh_mv.mv_ioport_map((p), (n)) +#endif + /* We really want to try and get these to memcpy etc */ void memcpy_fromio(void *, const volatile void __iomem *, unsigned long); void memcpy_toio(volatile void __iomem *, const void *, unsigned long); diff --git a/arch/sh/include/asm/machvec.h b/arch/sh/include/asm/machvec.h index bc0218cb72e..a0b0cf79cf8 100644 --- a/arch/sh/include/asm/machvec.h +++ b/arch/sh/include/asm/machvec.h @@ -19,6 +19,10 @@ struct sh_machine_vector { const char *mv_name; int mv_nr_irqs; + int (*mv_irq_demux)(int irq); + void (*mv_init_irq)(void); + +#ifdef CONFIG_HAS_IOPORT u8 (*mv_inb)(unsigned long); u16 (*mv_inw)(unsigned long); u32 (*mv_inl)(unsigned long); @@ -40,12 +44,9 @@ struct sh_machine_vector { void (*mv_outsw)(unsigned long, const void *src, unsigned long count); void (*mv_outsl)(unsigned long, const void *src, unsigned long count); - int (*mv_irq_demux)(int irq); - - void (*mv_init_irq)(void); - void __iomem *(*mv_ioport_map)(unsigned long port, unsigned int size); void (*mv_ioport_unmap)(void __iomem *); +#endif int (*mv_clk_init)(void); int (*mv_mode_pins)(void); diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile index 650b92f00ee..e25f3c69525 100644 --- a/arch/sh/kernel/Makefile +++ b/arch/sh/kernel/Makefile @@ -12,7 +12,7 @@ endif CFLAGS_REMOVE_return_address.o = -pg obj-y := clkdev.o debugtraps.o dma-nommu.o dumpstack.o \ - idle.o io.o io_generic.o irq.o \ + idle.o io.o irq.o \ irq_$(BITS).o machvec.o nmi_debug.o process.o \ process_$(BITS).o ptrace_$(BITS).o \ reboot.o return_address.o \ @@ -39,6 +39,7 @@ obj-$(CONFIG_DUMP_CODE) += disassemble.o obj-$(CONFIG_HIBERNATION) += swsusp.o obj-$(CONFIG_DWARF_UNWINDER) += dwarf.o obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_callchain.o +obj-$(CONFIG_HAS_IOPORT) += io_generic.o obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) += localtimer.o diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c index 4770c241c67..5c51b794ba2 100644 --- a/arch/sh/kernel/io.c +++ b/arch/sh/kernel/io.c @@ -112,25 +112,3 @@ void memset_io(volatile void __iomem *dst, int c, unsigned long count) } } EXPORT_SYMBOL(memset_io); - -#ifndef CONFIG_GENERIC_IOMAP - -void __iomem *ioport_map(unsigned long port, unsigned int nr) -{ - void __iomem *ret; - - ret = __ioport_map_trapped(port, nr); - if (ret) - return ret; - - return __ioport_map(port, nr); -} -EXPORT_SYMBOL(ioport_map); - -void ioport_unmap(void __iomem *addr) -{ - sh_mv.mv_ioport_unmap(addr); -} -EXPORT_SYMBOL(ioport_unmap); - -#endif /* CONFIG_GENERIC_IOMAP */ diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c index e1e1dbd1955..447d78f666f 100644 --- a/arch/sh/kernel/io_generic.c +++ b/arch/sh/kernel/io_generic.c @@ -158,3 +158,23 @@ void __iomem *generic_ioport_map(unsigned long addr, unsigned int size) void generic_ioport_unmap(void __iomem *addr) { } + +#ifndef CONFIG_GENERIC_IOMAP +void __iomem *ioport_map(unsigned long port, unsigned int nr) +{ + void __iomem *ret; + + ret = __ioport_map_trapped(port, nr); + if (ret) + return ret; + + return __ioport_map(port, nr); +} +EXPORT_SYMBOL(ioport_map); + +void ioport_unmap(void __iomem *addr) +{ + sh_mv.mv_ioport_unmap(addr); +} +EXPORT_SYMBOL(ioport_unmap); +#endif /* CONFIG_GENERIC_IOMAP */ diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c index 4a8bb4eeb8a..2947d2bd129 100644 --- a/arch/sh/kernel/io_trapped.c +++ b/arch/sh/kernel/io_trapped.c @@ -91,10 +91,14 @@ int register_trapped_io(struct trapped_io *tiop) tiop->magic = IO_TRAPPED_MAGIC; INIT_LIST_HEAD(&tiop->list); spin_lock_irq(&trapped_lock); +#ifdef CONFIG_HAS_IOPORT if (flags & IORESOURCE_IO) list_add(&tiop->list, &trapped_io); +#endif +#ifdef CONFIG_HAS_IOMEM if (flags & IORESOURCE_MEM) list_add(&tiop->list, &trapped_mem); +#endif spin_unlock_irq(&trapped_lock); return 0; diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c index 85cfaf916fd..9f9bb63616a 100644 --- a/arch/sh/kernel/machvec.c +++ b/arch/sh/kernel/machvec.c @@ -118,6 +118,14 @@ void __init sh_mv_setup(void) sh_mv.mv_##elem = generic_##elem; \ } while (0) +#ifdef CONFIG_HAS_IOPORT + +#ifdef P2SEG + __set_io_port_base(P2SEG); +#else + __set_io_port_base(0); +#endif + mv_set(inb); mv_set(inw); mv_set(inl); mv_set(outb); mv_set(outw); mv_set(outl); @@ -129,16 +137,13 @@ void __init sh_mv_setup(void) mv_set(ioport_map); mv_set(ioport_unmap); + +#endif + mv_set(irq_demux); mv_set(mode_pins); mv_set(mem_init); if (!sh_mv.mv_nr_irqs) sh_mv.mv_nr_irqs = NR_IRQS; - -#ifdef P2SEG - __set_io_port_base(P2SEG); -#else - __set_io_port_base(0); -#endif } -- cgit v1.2.3-18-g5258 From 242239715c8394da16b1dd0d6f3254f99cac10d2 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 25 May 2010 20:10:24 +0900 Subject: sh: mach-sdk7786: conditionally disable PIO support. SDK7786 only supports PIO via the PCI I/O space, so we disable PIO completely for the non-PCI case. Signed-off-by: Paul Mundt --- arch/sh/boards/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig index 938e87d5148..fd6ddeb7d2c 100644 --- a/arch/sh/boards/Kconfig +++ b/arch/sh/boards/Kconfig @@ -154,6 +154,7 @@ config SH_SDK7786 bool "SDK7786" depends on CPU_SUBTYPE_SH7786 select SYS_SUPPORTS_PCI + select NO_IOPORT if !PCI help Select SDK7786 if configuring for a Renesas Technology Europe SH7786-65nm board. -- cgit v1.2.3-18-g5258 From 861160bfd097de7dbf3195bbef210e4f787327ab Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 26 May 2010 15:58:45 +0900 Subject: sh: PIO disabling for x3proto and urquell. urquell only provides PIO in the PCI case, while the x3proto board never had a working PCIe controller, so it can simply disable it outright. Signed-off-by: Paul Mundt --- arch/sh/boards/Kconfig | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch') diff --git a/arch/sh/boards/Kconfig b/arch/sh/boards/Kconfig index fd6ddeb7d2c..07b35ca2f64 100644 --- a/arch/sh/boards/Kconfig +++ b/arch/sh/boards/Kconfig @@ -191,6 +191,7 @@ config SH_URQUELL depends on CPU_SUBTYPE_SH7786 select ARCH_REQUIRE_GPIOLIB select SYS_SUPPORTS_PCI + select NO_IOPORT if !PCI config SH_MIGOR bool "Migo-R" @@ -287,6 +288,7 @@ config SH_LBOX_RE2 config SH_X3PROTO bool "SH-X3 Prototype board" depends on CPU_SUBTYPE_SHX3 + select NO_IOPORT if !PCI config SH_MAGIC_PANEL_R2 bool "Magic Panel R2" -- cgit v1.2.3-18-g5258