GIT ccd45ad405bcb1504bd923bd0487902374c942c8 git+ssh://master.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.git commit Author: Paul Mundt Date: Mon Mar 5 20:19:57 2007 +0900 sh: Kill off I/O cruft for R7780RP. We don't have any use for these machvec fixups anymore, kill them all off and go with the generic instead. Signed-off-by: Paul Mundt commit 39e688a94b94eaba768b1494e19e96f828fc2688 Author: Paul Mundt Date: Mon Mar 5 19:46:47 2007 +0900 sh: Revert lazy dcache writeback changes. These ended up causing too many problems on older parts, revert for now.. Signed-off-by: Paul Mundt commit c87a7111349891043cb0a62b0ba745264d4b600a Author: Paul Mundt Date: Thu Mar 1 18:47:08 2007 +0900 sh: Enable SM501 support for RTS7751R2D. This enables the SM501 drivers for the R2D board. Additional work needs to be done to migrate off of the VoyagerGX cchip code to make use of the rest of the mfd infrastructure. Signed-off-by: Paul Mundt commit 87e29cacb7d09c81b09224bec395f970df958af4 Author: Paul Mundt Date: Thu Mar 1 15:56:31 2007 +0900 sh: Use L1_CACHE_BYTES for .data.cacheline_aligned. Previously this was using a hardcoded 32, use L1_CACHE_BYTES for cacheline alignment instead. Signed-off-by: Paul Mundt commit 5c36e6578d81f79ede871d3e66a0d6beeffeb3dc Author: Paul Mundt Date: Thu Mar 1 10:07:42 2007 +0900 sysctl: Support vdso_enabled sysctl on SH. All of the logic for this was already in place, we just hadn't wired it up in the sysctl table. Signed-off-by: Paul Mundt commit e6bcf562e58662b9765748d346e4c076b20e3aa5 Author: Hideo Saito Date: Wed Feb 28 18:35:42 2007 +0900 sh: Fix kernel thread stack corruption with preempt. When I run a preemptive kernel-2.6.20 for SH7780, a created kthread(pdflush) can not exit by do_exit() in kernel_thread_helper. I think that the created kthread should have a room for 'struct pt_regs' space on the stack top, because __switch_to() will refer to the space as follows using 'regs = task_pt_regs(prev)' and next condition may be true. Signed-off-by: Hideo Saito Signed-off-by: Paul Mundt commit e523d93c8487667552dd29ff756d6ea6bce30851 Author: Paul Mundt Date: Wed Feb 28 18:30:01 2007 +0900 doc: Add SH to vdso and earlyprintk in kernel-parameters.txt SH supports both of these options, add it to the docs. Signed-off-by: Paul Mundt commit c8bfa1fdc84af7b5e3c7f825a9f0bc6e8a19f5d5 Author: Ryusuke Sakato Date: Fri Feb 23 13:22:56 2007 +0900 sh: Fix sigmask trampling in signal delivery. There was a missing return in do_signal() that caused the saved sigmask to be written back after having successfully delivered the signal. Signed-off-by: Ryusuke Sakato Signed-off-by: Paul Mundt commit 9432f96803139adaff0cd9f4fa38b7fb99cda366 Author: Stuart Menefy Date: Fri Feb 23 13:22:17 2007 +0900 sh: Clear UBC when not in use. This takes care of tearing down the UBC so it's not inadvertently left configured at the next context switch time. Failure to do this results in spurious SIGTRAPs in certain debug sequences. Signed-off-by: Stuart Menefy Signed-off-by: Paul Mundt Documentation/kernel-parameters.txt | 5 - arch/sh/boards/renesas/r7780rp/Makefile | 2 arch/sh/boards/renesas/r7780rp/io.c | 233 ----------------------------- arch/sh/boards/renesas/r7780rp/setup.c | 24 --- arch/sh/boards/renesas/rts7751r2d/setup.c | 26 +++ arch/sh/configs/rts7751r2d_defconfig | 110 ++++++++++++-- arch/sh/kernel/entry-common.S | 2 arch/sh/kernel/io_generic.c | 3 arch/sh/kernel/process.c | 5 - arch/sh/kernel/ptrace.c | 45 ++++-- arch/sh/kernel/signal.c | 4 arch/sh/kernel/vmlinux.lds.S | 3 arch/sh/mm/cache-sh4.c | 12 - arch/sh/mm/cache-sh7705.c | 9 - arch/sh/mm/pg-sh4.c | 22 +++ arch/sh/mm/pg-sh7705.c | 31 ++++ arch/sh/mm/tlb-flush.c | 55 ------- arch/sh/mm/tlb-sh3.c | 63 ++++++++ arch/sh/mm/tlb-sh4.c | 68 ++++++++ include/asm-sh/cache.h | 3 include/asm-sh/cacheflush.h | 3 include/asm-sh/cpu-sh3/cacheflush.h | 2 include/asm-sh/cpu-sh4/cacheflush.h | 2 include/asm-sh/pgtable.h | 5 + include/asm-sh/thread_info.h | 2 kernel/sysctl.c | 3 26 files changed, 371 insertions(+), 371 deletions(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 03eb5ed..757dd99 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -79,6 +79,7 @@ parameter is applicable: Documentation/scsi/. SELINUX SELinux support is enabled. SERIAL Serial support is enabled. + SH SuperH architecture is enabled. SMP The kernel is an SMP kernel. SPARC Sparc architecture is enabled. SWSUSP Software suspend is enabled. @@ -485,7 +486,7 @@ and is between 256 and 4096 characters. dtc3181e= [HW,SCSI] - earlyprintk= [IA-32,X86-64] + earlyprintk= [IA-32,X86-64,SH] earlyprintk=vga earlyprintk=serial[,ttySn[,baudrate]] @@ -1768,7 +1769,7 @@ and is between 256 and 4096 characters. usbhid.mousepoll= [USBHID] The interval which mice are to be polled at. - vdso= [IA-32] + vdso= [IA-32,SH] vdso=1: enable VDSO (default) vdso=0: disable VDSO mapping diff --git a/arch/sh/boards/renesas/r7780rp/Makefile b/arch/sh/boards/renesas/r7780rp/Makefile index 3c93012..ed5f5a9 100644 --- a/arch/sh/boards/renesas/r7780rp/Makefile +++ b/arch/sh/boards/renesas/r7780rp/Makefile @@ -2,6 +2,6 @@ # # Makefile for the R7780RP-1 specific parts of the kernel # -obj-y := setup.o io.o irq.o +obj-y := setup.o irq.o obj-$(CONFIG_PUSH_SWITCH) += psw.o diff --git a/arch/sh/boards/renesas/r7780rp/io.c b/arch/sh/boards/renesas/r7780rp/io.c deleted file mode 100644 index f74d2ff..0000000 --- a/arch/sh/boards/renesas/r7780rp/io.c +++ /dev/null @@ -1,233 +0,0 @@ -/* - * Copyright (C) 2001 Ian da Silva, Jeremy Siegel - * Based largely on io_se.c. - * - * I/O routine for Renesas Solutions Highlander R7780RP-1 - * - * Initial version only to support LAN access; some - * placeholder code from io_r7780rp.c left in with the - * expectation of later SuperIO and PCMCIA access. - */ -#include -#include -#include -#include -#include -#include - -static inline unsigned long port88796l(unsigned int port, int flag) -{ - unsigned long addr; - - if (flag) - addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1); - else - addr = PA_AX88796L + ((port - AX88796L_IO_BASE) << 1) + 0x1000; - - return addr; -} - -#if defined(CONFIG_NE2000) || defined(CONFIG_NE2000_MODULE) -#define CHECK_AX88796L_PORT(port) \ - ((port >= AX88796L_IO_BASE) && (port < (AX88796L_IO_BASE+0x20))) -#else -#define CHECK_AX88796L_PORT(port) (0) -#endif - -/* - * General outline: remap really low stuff [eventually] to SuperIO, - * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) - * is mapped through the PCI IO window. Stuff with high bits (PXSEG) - * should be way beyond the window, and is used w/o translation for - * compatibility. - */ -u8 r7780rp_inb(unsigned long port) -{ - if (CHECK_AX88796L_PORT(port)) - return ctrl_inw(port88796l(port, 0)) & 0xff; - else if (is_pci_ioaddr(port)) - return ctrl_inb(pci_ioaddr(port)); - - return ctrl_inw(port) & 0xff; -} - -u8 r7780rp_inb_p(unsigned long port) -{ - u8 v; - - if (CHECK_AX88796L_PORT(port)) - v = ctrl_inw(port88796l(port, 0)) & 0xff; - else if (is_pci_ioaddr(port)) - v = ctrl_inb(pci_ioaddr(port)); - else - v = ctrl_inw(port) & 0xff; - - ctrl_delay(); - - return v; -} - -u16 r7780rp_inw(unsigned long port) -{ - if (is_pci_ioaddr(port)) - return ctrl_inw(pci_ioaddr(port)); - - return ctrl_inw(port); -} - -u32 r7780rp_inl(unsigned long port) -{ - if (is_pci_ioaddr(port)) - return ctrl_inl(pci_ioaddr(port)); - - return ctrl_inl(port); -} - -void r7780rp_outb(u8 value, unsigned long port) -{ - if (CHECK_AX88796L_PORT(port)) - ctrl_outw(value, port88796l(port, 0)); - else if (is_pci_ioaddr(port)) - ctrl_outb(value, pci_ioaddr(port)); - else - ctrl_outb(value, port); -} - -void r7780rp_outb_p(u8 value, unsigned long port) -{ - if (CHECK_AX88796L_PORT(port)) - ctrl_outw(value, port88796l(port, 0)); - else if (is_pci_ioaddr(port)) - ctrl_outb(value, pci_ioaddr(port)); - else - ctrl_outb(value, port); - - ctrl_delay(); -} - -void r7780rp_outw(u16 value, unsigned long port) -{ - if (is_pci_ioaddr(port)) - ctrl_outw(value, pci_ioaddr(port)); - else - ctrl_outw(value, port); -} - -void r7780rp_outl(u32 value, unsigned long port) -{ - if (is_pci_ioaddr(port)) - ctrl_outl(value, pci_ioaddr(port)); - else - ctrl_outl(value, port); -} - -void r7780rp_insb(unsigned long port, void *dst, unsigned long count) -{ - volatile u16 *p; - u8 *buf = dst; - - if (CHECK_AX88796L_PORT(port)) { - p = (volatile u16 *)port88796l(port, 0); - while (count--) - *buf++ = *p & 0xff; - } else if (is_pci_ioaddr(port)) { - volatile u8 *bp = (volatile u8 *)pci_ioaddr(port); - - while (count--) - *buf++ = *bp; - } else { - p = (volatile u16 *)port; - while (count--) - *buf++ = *p & 0xff; - } -} - -void r7780rp_insw(unsigned long port, void *dst, unsigned long count) -{ - volatile u16 *p; - u16 *buf = dst; - - if (CHECK_AX88796L_PORT(port)) - p = (volatile u16 *)port88796l(port, 1); - else if (is_pci_ioaddr(port)) - p = (volatile u16 *)pci_ioaddr(port); - else - p = (volatile u16 *)port; - - while (count--) - *buf++ = *p; - - flush_dcache_all(); -} - -void r7780rp_insl(unsigned long port, void *dst, unsigned long count) -{ - if (is_pci_ioaddr(port)) { - volatile u32 *p = (volatile u32 *)pci_ioaddr(port); - u32 *buf = dst; - - while (count--) - *buf++ = *p; - } -} - -void r7780rp_outsb(unsigned long port, const void *src, unsigned long count) -{ - volatile u16 *p; - const u8 *buf = src; - - if (CHECK_AX88796L_PORT(port)) { - p = (volatile u16 *)port88796l(port, 0); - while (count--) - *p = *buf++; - } else if (is_pci_ioaddr(port)) { - volatile u8 *bp = (volatile u8 *)pci_ioaddr(port); - - while (count--) - *bp = *buf++; - } else - while (count--) - ctrl_outb(*buf++, port); -} - -void r7780rp_outsw(unsigned long port, const void *src, unsigned long count) -{ - volatile u16 *p; - const u16 *buf = src; - - if (CHECK_AX88796L_PORT(port)) - p = (volatile u16 *)port88796l(port, 1); - else if (is_pci_ioaddr(port)) - p = (volatile u16 *)pci_ioaddr(port); - else - p = (volatile u16 *)port; - - while (count--) - *p = *buf++; - - flush_dcache_all(); -} - -void r7780rp_outsl(unsigned long port, const void *src, unsigned long count) -{ - const u32 *buf = src; - u32 *p; - - if (is_pci_ioaddr(port)) - p = (u32 *)pci_ioaddr(port); - else - p = (u32 *)port; - - while (count--) - ctrl_outl(*buf++, (unsigned long)p); -} - -void __iomem *r7780rp_ioport_map(unsigned long port, unsigned int size) -{ - if (CHECK_AX88796L_PORT(port)) - return (void __iomem *)port88796l(port, size > 1); - else if (is_pci_ioaddr(port)) - return (void __iomem *)pci_ioaddr(port); - - return (void __iomem *)port; -} diff --git a/arch/sh/boards/renesas/r7780rp/setup.c b/arch/sh/boards/renesas/r7780rp/setup.c index 0d74db9..2faba66 100644 --- a/arch/sh/boards/renesas/r7780rp/setup.c +++ b/arch/sh/boards/renesas/r7780rp/setup.c @@ -187,31 +187,7 @@ #endif struct sh_machine_vector mv_r7780rp __initmv = { .mv_name = "Highlander R7780RP-1", .mv_setup = r7780rp_setup, - .mv_nr_irqs = 109, - - .mv_inb = r7780rp_inb, - .mv_inw = r7780rp_inw, - .mv_inl = r7780rp_inl, - .mv_outb = r7780rp_outb, - .mv_outw = r7780rp_outw, - .mv_outl = r7780rp_outl, - - .mv_inb_p = r7780rp_inb_p, - .mv_inw_p = r7780rp_inw, - .mv_inl_p = r7780rp_inl, - .mv_outb_p = r7780rp_outb_p, - .mv_outw_p = r7780rp_outw, - .mv_outl_p = r7780rp_outl, - - .mv_insb = r7780rp_insb, - .mv_insw = r7780rp_insw, - .mv_insl = r7780rp_insl, - .mv_outsb = r7780rp_outsb, - .mv_outsw = r7780rp_outsw, - .mv_outsl = r7780rp_outsl, - - .mv_ioport_map = r7780rp_ioport_map, .mv_init_irq = init_r7780rp_IRQ, }; ALIAS_MV(r7780rp) diff --git a/arch/sh/boards/renesas/rts7751r2d/setup.c b/arch/sh/boards/renesas/rts7751r2d/setup.c index 44b4208..593f26a 100644 --- a/arch/sh/boards/renesas/rts7751r2d/setup.c +++ b/arch/sh/boards/renesas/rts7751r2d/setup.c @@ -12,6 +12,7 @@ #include #include #include #include +#include #include #include #include @@ -111,10 +112,35 @@ static struct platform_device heartbeat_ .resource = heartbeat_resources, }; +static struct resource sm501_resources[] = { + [0] = { + .start = 0x10000000, + .end = 0x13e00000 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = 0x13e00000, + .end = 0x13ffffff, + .flags = IORESOURCE_MEM, + }, + [2] = { + .start = 32, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device sm501_device = { + .name = "sm501", + .id = -1, + .num_resources = ARRAY_SIZE(sm501_resources), + .resource = sm501_resources, +}; + static struct platform_device *rts7751r2d_devices[] __initdata = { &uart_device, &heartbeat_device, &cf_ide_device, + &sm501_device, }; static int __init rts7751r2d_devices_setup(void) diff --git a/arch/sh/configs/rts7751r2d_defconfig b/arch/sh/configs/rts7751r2d_defconfig index db6a02d..a59bb78 100644 --- a/arch/sh/configs/rts7751r2d_defconfig +++ b/arch/sh/configs/rts7751r2d_defconfig @@ -1,14 +1,13 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.20 -# Thu Feb 15 17:17:29 2007 +# Linux kernel version: 2.6.21-rc1 +# Thu Mar 1 16:42:40 2007 # CONFIG_SUPERH=y CONFIG_RWSEM_GENERIC_SPINLOCK=y CONFIG_GENERIC_FIND_NEXT_BIT=y CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_HARDIRQS=y -CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_GENERIC_TIME is not set @@ -33,6 +32,7 @@ CONFIG_LOCALVERSION_AUTO=y CONFIG_SWAP=y CONFIG_SYSVIPC=y # CONFIG_IPC_NS is not set +CONFIG_SYSVIPC_SYSCTL=y # CONFIG_POSIX_MQUEUE is not set # CONFIG_BSD_PROCESS_ACCT is not set # CONFIG_TASKSTATS is not set @@ -119,7 +119,6 @@ # CONFIG_SH_TITAN is not set # CONFIG_SH_SHMIN is not set # CONFIG_SH_7206_SOLUTION_ENGINE is not set # CONFIG_SH_7619_SOLUTION_ENGINE is not set -# CONFIG_SH_ASDAP310 is not set # CONFIG_SH_UNKNOWN is not set # @@ -281,7 +280,7 @@ CONFIG_ZERO_PAGE_OFFSET=0x00010000 CONFIG_BOOT_LINK_OFFSET=0x00800000 # CONFIG_UBC_WAKEUP is not set CONFIG_CMDLINE_BOOL=y -CONFIG_CMDLINE="console=ttySC0,115200 root=/dev/sda1" +CONFIG_CMDLINE="console=tty0 console=ttySC0,115200 root=/dev/sda1" # # Bus options @@ -433,6 +432,7 @@ # CONFIG_PARPORT is not set # # Plug and Play support # +# CONFIG_PNPACPI is not set # # Block devices @@ -770,7 +770,26 @@ # CONFIG_PHONE is not set # # Input device support # -# CONFIG_INPUT is not set +CONFIG_INPUT=y +# CONFIG_INPUT_FF_MEMLESS is not set + +# +# Userland interfaces +# +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_JOYDEV is not set +# CONFIG_INPUT_TSDEV is not set +# CONFIG_INPUT_EVDEV is not set +# CONFIG_INPUT_EVBUG is not set + +# +# Input Device Drivers +# +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_TOUCHSCREEN is not set +# CONFIG_INPUT_MISC is not set # # Hardware I/O ports @@ -781,7 +800,10 @@ # CONFIG_GAMEPORT is not set # # Character devices # -# CONFIG_VT is not set +CONFIG_VT=y +CONFIG_VT_CONSOLE=y +CONFIG_HW_CONSOLE=y +CONFIG_VT_HW_CONSOLE_BINDING=y # CONFIG_SERIAL_NONSTANDARD is not set # @@ -857,6 +879,11 @@ # CONFIG_SENSORS_VT1211 is not set # CONFIG_HWMON_DEBUG_CHIP is not set # +# Multifunction device drivers +# +CONFIG_MFD_SM501=y + +# # Multimedia devices # # CONFIG_VIDEO_DEV is not set @@ -869,9 +896,66 @@ # CONFIG_DVB is not set # # Graphics support # -CONFIG_FIRMWARE_EDID=y -# CONFIG_FB is not set # CONFIG_BACKLIGHT_LCD_SUPPORT is not set +CONFIG_FB=y +# CONFIG_FIRMWARE_EDID is not set +# CONFIG_FB_DDC is not set +CONFIG_FB_CFB_FILLRECT=y +CONFIG_FB_CFB_COPYAREA=y +CONFIG_FB_CFB_IMAGEBLIT=y +# CONFIG_FB_SVGALIB is not set +# CONFIG_FB_MACMODES is not set +# CONFIG_FB_BACKLIGHT is not set +# CONFIG_FB_MODE_HELPERS is not set +# CONFIG_FB_TILEBLITTING is not set + +# +# Frambuffer hardware drivers +# +# CONFIG_FB_CIRRUS is not set +# CONFIG_FB_PM2 is not set +# CONFIG_FB_CYBER2000 is not set +# CONFIG_FB_ASILIANT is not set +# CONFIG_FB_IMSTT is not set +# CONFIG_FB_EPSON1355 is not set +# CONFIG_FB_S1D13XXX is not set +# CONFIG_FB_NVIDIA is not set +# CONFIG_FB_RIVA is not set +# CONFIG_FB_MATROX is not set +# CONFIG_FB_RADEON is not set +# CONFIG_FB_ATY128 is not set +# CONFIG_FB_ATY is not set +# CONFIG_FB_S3 is not set +# CONFIG_FB_SAVAGE is not set +# CONFIG_FB_SIS is not set +# CONFIG_FB_NEOMAGIC is not set +# CONFIG_FB_KYRO is not set +# CONFIG_FB_3DFX is not set +# CONFIG_FB_VOODOO1 is not set +# CONFIG_FB_TRIDENT is not set +CONFIG_FB_SM501=y +# CONFIG_FB_VIRTUAL is not set + +# +# Console display driver support +# +CONFIG_DUMMY_CONSOLE=y +CONFIG_FRAMEBUFFER_CONSOLE=y +# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set +# CONFIG_FONTS is not set +CONFIG_FONT_8x8=y +CONFIG_FONT_8x16=y + +# +# Logo configuration +# +CONFIG_LOGO=y +# CONFIG_LOGO_LINUX_MONO is not set +# CONFIG_LOGO_LINUX_VGA16 is not set +# CONFIG_LOGO_LINUX_CLUT224 is not set +# CONFIG_LOGO_SUPERH_MONO is not set +# CONFIG_LOGO_SUPERH_VGA16 is not set +CONFIG_LOGO_SUPERH_CLUT224=y # # Sound @@ -985,6 +1069,12 @@ # CONFIG_SOUND_VIA82CXXX is not set CONFIG_AC97_BUS=m # +# HID Devices +# +CONFIG_HID=y +# CONFIG_HID_DEBUG is not set + +# # USB support # CONFIG_USB_ARCH_HAS_HCD=y @@ -1237,7 +1327,7 @@ # CONFIG_SH_STANDARD_BIOS is not set CONFIG_EARLY_SCIF_CONSOLE=y CONFIG_EARLY_SCIF_CONSOLE_PORT=0xffe80000 CONFIG_EARLY_PRINTK=y -# CONFIG_KGDB is not set +# CONFIG_SH_KGDB is not set # # Security options diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index ab4ebb8..b467280 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -224,7 +224,7 @@ #endif syscall_exit_work: ! r0: current_thread_info->flags ! r8: current_thread_info - tst #_TIF_SYSCALL_TRACE, r0 + tst #_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP, r0 bt/s work_pending tst #_TIF_NEED_RESCHED, r0 #ifdef CONFIG_TRACE_IRQFLAGS diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c index 66626c0..771ea42 100644 --- a/arch/sh/kernel/io_generic.c +++ b/arch/sh/kernel/io_generic.c @@ -14,7 +14,6 @@ #include #include #include -#include #ifdef CONFIG_CPU_SH3 /* SH3 has a PCMCIA bug that needs a dummy read from area 6 for a @@ -96,7 +95,6 @@ void generic_insw(unsigned long port, vo while (count--) *buf++ = *port_addr; - flush_dcache_all(); dummy_read(); } @@ -171,7 +169,6 @@ void generic_outsw(unsigned long port, c while (count--) *port_addr = *buf++; - flush_dcache_all(); dummy_read(); } diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 9d6a438..e760736 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -250,12 +250,11 @@ #endif childregs->regs[15] = usp; ti->addr_limit = USER_DS; } else { - childregs->regs[15] = (unsigned long)task_stack_page(p) + - THREAD_SIZE; + childregs->regs[15] = (unsigned long)childregs; ti->addr_limit = KERNEL_DS; } - if (clone_flags & CLONE_SETTLS) + if (clone_flags & CLONE_SETTLS) childregs->gbr = childregs->regs[0]; childregs->regs[0] = 0; /* Set return value for child */ diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c index 04ca13a..855f724 100644 --- a/arch/sh/kernel/ptrace.c +++ b/arch/sh/kernel/ptrace.c @@ -8,7 +8,6 @@ * SuperH version: Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka * */ - #include #include #include @@ -20,8 +19,7 @@ #include #include #include #include - -#include +#include #include #include #include @@ -59,6 +57,23 @@ static inline int put_stack_long(struct return 0; } +static void ptrace_disable_singlestep(struct task_struct *child) +{ + clear_tsk_thread_flag(child, TIF_SINGLESTEP); + + /* + * Ensure the UBC is not programmed at the next context switch. + * + * Normally this is not needed but there are sequences such as + * singlestep, signal delivery, and continue that leave the + * ubc_pc non-zero leading to spurious SIGTRAPs. + */ + if (child->thread.ubc_pc != 0) { + ubc_usercnt -= 1; + child->thread.ubc_pc = 0; + } +} + /* * Called by kernel/ptrace.c when detaching.. * @@ -66,7 +81,7 @@ static inline int put_stack_long(struct */ void ptrace_disable(struct task_struct *child) { - /* nothing to do.. */ + ptrace_disable_singlestep(child); } long arch_ptrace(struct task_struct *child, long request, long addr, long data) @@ -76,7 +91,7 @@ long arch_ptrace(struct task_struct *chi switch (request) { /* when I and D space are separate, these will need to be fixed. */ - case PTRACE_PEEKTEXT: /* read word at location addr. */ + case PTRACE_PEEKTEXT: /* read word at location addr. */ case PTRACE_PEEKDATA: { unsigned long tmp; int copied; @@ -94,7 +109,7 @@ long arch_ptrace(struct task_struct *chi unsigned long tmp; ret = -EIO; - if ((addr & 3) || addr < 0 || + if ((addr & 3) || addr < 0 || addr > sizeof(struct user) - 3) break; @@ -129,7 +144,7 @@ long arch_ptrace(struct task_struct *chi case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ ret = -EIO; - if ((addr & 3) || addr < 0 || + if ((addr & 3) || addr < 0 || addr > sizeof(struct user) - 3) break; @@ -156,6 +171,9 @@ long arch_ptrace(struct task_struct *chi set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); else clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + + ptrace_disable_singlestep(child); + child->exit_code = data; wake_up_process(child); ret = 0; @@ -163,14 +181,15 @@ long arch_ptrace(struct task_struct *chi } /* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to + * make the child exit. Best I can do is send it a sigkill. + * perhaps it should be put in the status that it wants to * exit. */ case PTRACE_KILL: { ret = 0; if (child->exit_state == EXIT_ZOMBIE) /* already dead */ break; + ptrace_disable_singlestep(child); child->exit_code = SIGKILL; wake_up_process(child); break; @@ -196,6 +215,7 @@ long arch_ptrace(struct task_struct *chi ubc_usercnt += 1; child->thread.ubc_pc = pc; + set_tsk_thread_flag(child, TIF_SINGLESTEP); child->exit_code = data; /* give it a chance to run. */ wake_up_process(child); @@ -248,14 +268,15 @@ asmlinkage void do_syscall_trace(void) { struct task_struct *tsk = current; - if (!test_thread_flag(TIF_SYSCALL_TRACE)) + if (!test_thread_flag(TIF_SYSCALL_TRACE) && + !test_thread_flag(TIF_SINGLESTEP)) return; if (!(tsk->ptrace & PT_PTRACED)) return; /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) && + !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0)); /* * this isn't the same as continuing with a signal, but it will do diff --git a/arch/sh/kernel/signal.c b/arch/sh/kernel/signal.c index 32f10a0..9f39ef1 100644 --- a/arch/sh/kernel/signal.c +++ b/arch/sh/kernel/signal.c @@ -589,6 +589,8 @@ static void do_signal(struct pt_regs *re if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); } + + return; } no_signal: @@ -598,7 +600,7 @@ static void do_signal(struct pt_regs *re if (regs->regs[0] == -ERESTARTNOHAND || regs->regs[0] == -ERESTARTSYS || regs->regs[0] == -ERESTARTNOINTR) { - regs->regs[0] = save_r0; + regs->regs[0] = save_r0; regs->pc -= 2; } else if (regs->regs[0] == -ERESTART_RESTARTBLOCK) { regs->pc -= 2; diff --git a/arch/sh/kernel/vmlinux.lds.S b/arch/sh/kernel/vmlinux.lds.S index 75de165..78a6c09 100644 --- a/arch/sh/kernel/vmlinux.lds.S +++ b/arch/sh/kernel/vmlinux.lds.S @@ -3,6 +3,7 @@ * Written by Niibe Yutaka */ #include +#include #include #ifdef CONFIG_CPU_LITTLE_ENDIAN @@ -53,7 +54,7 @@ SECTIONS . = ALIGN(PAGE_SIZE); .data.page_aligned : { *(.data.page_aligned) } - . = ALIGN(32); + . = ALIGN(L1_CACHE_BYTES); __per_cpu_start = .; .data.percpu : { *(.data.percpu) } __per_cpu_end = .; diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index e0cd4b7..981b040 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -237,20 +237,10 @@ static inline void flush_cache_4096(unsi /* * Write back & invalidate the D-cache of the page. * (To avoid "alias" issues) - * - * This uses a lazy write-back on UP, which is explicitly - * disabled on SMP. */ void flush_dcache_page(struct page *page) { -#ifndef CONFIG_SMP - struct address_space *mapping = page_mapping(page); - - if (mapping && !mapping_mapped(mapping)) - set_bit(PG_dcache_dirty, &page->flags); - else -#endif - { + if (test_bit(PG_mapped, &page->flags)) { unsigned long phys = PHYSADDR(page_address(page)); unsigned long addr = CACHE_OC_ADDRESS_ARRAY; int i, n; diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c index 31f8deb..4896d73 100644 --- a/arch/sh/mm/cache-sh7705.c +++ b/arch/sh/mm/cache-sh7705.c @@ -3,11 +3,11 @@ * * Copyright (C) 1999, 2000 Niibe Yutaka * Copyright (C) 2004 Alex Song - * Copyright (C) 2006 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 #include @@ -51,6 +51,7 @@ static inline void cache_wback_all(void) if ((data & v) == v) ctrl_outl(data & ~v, addr); + } addrstart += current_cpu_data.dcache.way_incr; @@ -127,11 +128,7 @@ static void __flush_dcache_page(unsigned */ void flush_dcache_page(struct page *page) { - struct address_space *mapping = page_mapping(page); - - if (mapping && !mapping_mapped(mapping)) - set_bit(PG_dcache_dirty, &page->flags); - else + if (test_bit(PG_mapped, &page->flags)) __flush_dcache_page(PHYSADDR(page_address(page))); } diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c index 969efec..df69da9 100644 --- a/arch/sh/mm/pg-sh4.c +++ b/arch/sh/mm/pg-sh4.c @@ -23,6 +23,7 @@ #define CACHE_ALIAS (current_cpu_data.dc */ void clear_user_page(void *to, unsigned long address, struct page *page) { + __set_bit(PG_mapped, &page->flags); if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) clear_page(to); else { @@ -58,6 +59,7 @@ void clear_user_page(void *to, unsigned void copy_user_page(void *to, void *from, unsigned long address, struct page *page) { + __set_bit(PG_mapped, &page->flags); if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) copy_page(to, from); else { @@ -82,3 +84,23 @@ void copy_user_page(void *to, void *from mutex_unlock(&p3map_mutex[(address & CACHE_ALIAS)>>12]); } } + +/* + * For SH-4, we have our own implementation for ptep_get_and_clear + */ +inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +{ + pte_t pte = *ptep; + + pte_clear(mm, addr, ptep); + if (!pte_not_present(pte)) { + unsigned long pfn = pte_pfn(pte); + if (pfn_valid(pfn)) { + struct page *page = pfn_to_page(pfn); + struct address_space *mapping = page_mapping(page); + if (!mapping || !mapping_writably_mapped(mapping)) + __clear_bit(PG_mapped, &page->flags); + } + } + return pte; +} diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c index 887ab9d..a4b015f 100644 --- a/arch/sh/mm/pg-sh7705.c +++ b/arch/sh/mm/pg-sh7705.c @@ -7,7 +7,9 @@ * 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 #include #include @@ -74,6 +76,7 @@ void clear_user_page(void *to, unsigned { struct page *page = virt_to_page(to); + __set_bit(PG_mapped, &page->flags); if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { clear_page(to); __flush_wback_region(to, PAGE_SIZE); @@ -92,11 +95,12 @@ void clear_user_page(void *to, unsigned * @from: P1 address * @address: U0 address to be mapped */ -void copy_user_page(void *to, void *from, unsigned long address, - struct page *pg) +void copy_user_page(void *to, void *from, unsigned long address, struct page *pg) { struct page *page = virt_to_page(to); + + __set_bit(PG_mapped, &page->flags); if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { copy_page(to, from); __flush_wback_region(to, PAGE_SIZE); @@ -108,3 +112,26 @@ void copy_user_page(void *to, void *from __flush_wback_region(to, PAGE_SIZE); } } + +/* + * For SH7705, we have our own implementation for ptep_get_and_clear + * Copied from pg-sh4.c + */ +inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +{ + pte_t pte = *ptep; + + pte_clear(mm, addr, ptep); + if (!pte_not_present(pte)) { + unsigned long pfn = pte_pfn(pte); + if (pfn_valid(pfn)) { + struct page *page = pfn_to_page(pfn); + struct address_space *mapping = page_mapping(page); + if (!mapping || !mapping_writably_mapped(mapping)) + __clear_bit(PG_mapped, &page->flags); + } + } + + return pte; +} + diff --git a/arch/sh/mm/tlb-flush.c b/arch/sh/mm/tlb-flush.c index d2f7b4a..6f45c1f 100644 --- a/arch/sh/mm/tlb-flush.c +++ b/arch/sh/mm/tlb-flush.c @@ -2,17 +2,15 @@ * TLB flushing operations for SH with an MMU. * * Copyright (C) 1999 Niibe Yutaka - * Copyright (C) 2003 - 2006 Paul Mundt + * Copyright (C) 2003 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 -#include #include #include -#include void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) { @@ -140,54 +138,3 @@ void local_flush_tlb_all(void) ctrl_barrier(); local_irq_restore(flags); } - -void update_mmu_cache(struct vm_area_struct *vma, - unsigned long address, pte_t pte) -{ - unsigned long flags; - unsigned long pteval; - unsigned long vpn; - struct page *page; - unsigned long pfn = pte_pfn(pte); - struct address_space *mapping; - - if (!pfn_valid(pfn)) - return; - - page = pfn_to_page(pfn); - mapping = page_mapping(page); - if (mapping) { - unsigned long phys = pte_val(pte) & PTE_PHYS_MASK; - int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags); - - if (dirty) - __flush_wback_region((void *)P1SEGADDR(phys), - PAGE_SIZE); - } - - local_irq_save(flags); - - /* Set PTEH register */ - vpn = (address & MMU_VPN_MASK) | get_asid(); - ctrl_outl(vpn, MMU_PTEH); - - pteval = pte_val(pte); - -#ifdef CONFIG_CPU_HAS_PTEA - /* Set PTEA register */ - /* TODO: make this look less hacky */ - ctrl_outl(((pteval >> 28) & 0xe) | (pteval & 0x1), MMU_PTEA); -#endif - - /* Set PTEL register */ - pteval &= _PAGE_FLAGS_HARDWARE_MASK; /* drop software flags */ -#if defined(CONFIG_SH_WRITETHROUGH) && defined(CONFIG_CPU_SH4) - pteval |= _PAGE_WT; -#endif - /* conveniently, we want all the software flags to be 0 anyway */ - ctrl_outl(pteval, MMU_PTEL); - - /* Load the TLB */ - asm volatile("ldtlb": /* no output */ : /* no input */ : "memory"); - local_irq_restore(flags); -} diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c index e5e76eb..7fbfd5a 100644 --- a/arch/sh/mm/tlb-sh3.c +++ b/arch/sh/mm/tlb-sh3.c @@ -8,9 +8,69 @@ * * Released under the terms of the GNU GPL v2.0. */ -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + #include +#include +#include +#include #include +#include + +void update_mmu_cache(struct vm_area_struct * vma, + unsigned long address, pte_t pte) +{ + unsigned long flags; + unsigned long pteval; + unsigned long vpn; + + /* Ptrace may call this routine. */ + if (vma && current->active_mm != vma->vm_mm) + return; + +#if defined(CONFIG_SH7705_CACHE_32KB) + { + struct page *page = pte_page(pte); + unsigned long pfn = pte_pfn(pte); + + if (pfn_valid(pfn) && !test_bit(PG_mapped, &page->flags)) { + unsigned long phys = pte_val(pte) & PTE_PHYS_MASK; + + __flush_wback_region((void *)P1SEGADDR(phys), + PAGE_SIZE); + __set_bit(PG_mapped, &page->flags); + } + } +#endif + + local_irq_save(flags); + + /* Set PTEH register */ + vpn = (address & MMU_VPN_MASK) | get_asid(); + ctrl_outl(vpn, MMU_PTEH); + + pteval = pte_val(pte); + + /* Set PTEL register */ + pteval &= _PAGE_FLAGS_HARDWARE_MASK; /* drop software flags */ + /* conveniently, we want all the software flags to be 0 anyway */ + ctrl_outl(pteval, MMU_PTEL); + + /* Load the TLB */ + asm volatile("ldtlb": /* no output */ : /* no input */ : "memory"); + local_irq_restore(flags); +} void local_flush_tlb_one(unsigned long asid, unsigned long page) { @@ -34,3 +94,4 @@ void local_flush_tlb_one(unsigned long a for (i = 0; i < ways; i++) ctrl_outl(data, addr + (i << 8)); } + diff --git a/arch/sh/mm/tlb-sh4.c b/arch/sh/mm/tlb-sh4.c index 221e709..f74cf66 100644 --- a/arch/sh/mm/tlb-sh4.c +++ b/arch/sh/mm/tlb-sh4.c @@ -8,9 +8,74 @@ * * Released under the terms of the GNU GPL v2.0. */ -#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + #include +#include +#include +#include #include +#include + +void update_mmu_cache(struct vm_area_struct * vma, + unsigned long address, pte_t pte) +{ + unsigned long flags; + unsigned long pteval; + unsigned long vpn; + struct page *page; + unsigned long pfn; + + /* Ptrace may call this routine. */ + if (vma && current->active_mm != vma->vm_mm) + return; + + pfn = pte_pfn(pte); + if (pfn_valid(pfn)) { + page = pfn_to_page(pfn); + if (!test_bit(PG_mapped, &page->flags)) { + unsigned long phys = pte_val(pte) & PTE_PHYS_MASK; + __flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE); + __set_bit(PG_mapped, &page->flags); + } + } + + local_irq_save(flags); + + /* Set PTEH register */ + vpn = (address & MMU_VPN_MASK) | get_asid(); + ctrl_outl(vpn, MMU_PTEH); + + pteval = pte_val(pte); + + /* Set PTEA register */ + if (cpu_data->flags & CPU_HAS_PTEA) + /* TODO: make this look less hacky */ + ctrl_outl(((pteval >> 28) & 0xe) | (pteval & 0x1), MMU_PTEA); + + /* Set PTEL register */ + pteval &= _PAGE_FLAGS_HARDWARE_MASK; /* drop software flags */ +#ifdef CONFIG_SH_WRITETHROUGH + pteval |= _PAGE_WT; +#endif + /* conveniently, we want all the software flags to be 0 anyway */ + ctrl_outl(pteval, MMU_PTEL); + + /* Load the TLB */ + asm volatile("ldtlb": /* no output */ : /* no input */ : "memory"); + local_irq_restore(flags); +} void local_flush_tlb_one(unsigned long asid, unsigned long page) { @@ -28,3 +93,4 @@ void local_flush_tlb_one(unsigned long a ctrl_outl(data, addr); back_to_P1(); } + diff --git a/include/asm-sh/cache.h b/include/asm-sh/cache.h index e3a180c..9a3cb6b 100644 --- a/include/asm-sh/cache.h +++ b/include/asm-sh/cache.h @@ -21,6 +21,7 @@ #define SMP_CACHE_BYTES L1_CACHE_BYTES #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1)) +#ifndef __ASSEMBLY__ struct cache_info { unsigned int ways; /* Number of cache ways */ unsigned int sets; /* Number of cache sets */ @@ -47,6 +48,6 @@ struct cache_info { unsigned long flags; }; - +#endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* __ASM_SH_CACHE_H */ diff --git a/include/asm-sh/cacheflush.h b/include/asm-sh/cacheflush.h index 22f1263..07f62ec 100644 --- a/include/asm-sh/cacheflush.h +++ b/include/asm-sh/cacheflush.h @@ -30,8 +30,5 @@ #define copy_from_user_page(vma, page, v #define HAVE_ARCH_UNMAPPED_AREA -/* Page flag for lazy dcache write-back for the aliasing UP caches */ -#define PG_dcache_dirty PG_arch_1 - #endif /* __KERNEL__ */ #endif /* __ASM_SH_CACHEFLUSH_H */ diff --git a/include/asm-sh/cpu-sh3/cacheflush.h b/include/asm-sh/cpu-sh3/cacheflush.h index 6fabbba..f70d8ef 100644 --- a/include/asm-sh/cpu-sh3/cacheflush.h +++ b/include/asm-sh/cpu-sh3/cacheflush.h @@ -36,6 +36,8 @@ #if defined(CONFIG_SH7705_CACHE_32KB) /* 32KB cache, 4kb PAGE sizes need to check bit 12 */ #define CACHE_ALIAS 0x00001000 +#define PG_mapped PG_arch_1 + void flush_cache_all(void); void flush_cache_mm(struct mm_struct *mm); #define flush_cache_dup_mm(mm) flush_cache_mm(mm) diff --git a/include/asm-sh/cpu-sh4/cacheflush.h b/include/asm-sh/cpu-sh4/cacheflush.h index b3746a9..5fd5c89 100644 --- a/include/asm-sh/cpu-sh4/cacheflush.h +++ b/include/asm-sh/cpu-sh4/cacheflush.h @@ -39,4 +39,6 @@ #define flush_icache_page(vma,pg) do { /* Initialization of P3 area for copy_user_page */ void p3_cache_init(void); +#define PG_mapped PG_arch_1 + #endif /* __ASM_CPU_SH4_CACHEFLUSH_H */ diff --git a/include/asm-sh/pgtable.h b/include/asm-sh/pgtable.h index 9214c01..184d7fc 100644 --- a/include/asm-sh/pgtable.h +++ b/include/asm-sh/pgtable.h @@ -583,6 +583,11 @@ #ifndef CONFIG_MMU extern unsigned int kobjsize(const void *objp); #endif /* !CONFIG_MMU */ +#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB) +#define __HAVE_ARCH_PTEP_GET_AND_CLEAR +extern pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); +#endif + extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; extern void paging_init(void); diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h index 279e70a..31d55e3 100644 --- a/include/asm-sh/thread_info.h +++ b/include/asm-sh/thread_info.h @@ -111,6 +111,7 @@ #define TIF_NOTIFY_RESUME 1 /* resumptio #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */ +#define TIF_SINGLESTEP 5 /* singlestepping active */ #define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */ #define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 18 @@ -121,6 +122,7 @@ #define _TIF_NOTIFY_RESUME (1<