diff options
Diffstat (limited to 'arch/sparc/kernel')
46 files changed, 2099 insertions, 713 deletions
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile index 5b47fab9966e..c6316142db4e 100644 --- a/arch/sparc/kernel/Makefile +++ b/arch/sparc/kernel/Makefile @@ -72,7 +72,7 @@ obj-y += dma.o obj-$(CONFIG_SPARC32_PCI) += pcic.o obj-$(CONFIG_SMP) += trampoline_$(BITS).o smp_$(BITS).o -obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o +obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o obj-$(CONFIG_SPARC64_SMP) += hvtramp.o obj-y += auxio_$(BITS).o @@ -87,6 +87,7 @@ obj-$(CONFIG_KGDB) += kgdb_$(BITS).o obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o CFLAGS_REMOVE_ftrace.o := -pg +obj-$(CONFIG_EARLYFB) += btext.o obj-$(CONFIG_STACKTRACE) += stacktrace.o # sparc64 PCI obj-$(CONFIG_SPARC64_PCI) += pci.o pci_common.o psycho_common.o diff --git a/arch/sparc/kernel/apc.c b/arch/sparc/kernel/apc.c index 9c115823c4b5..71ec90b9e316 100644 --- a/arch/sparc/kernel/apc.c +++ b/arch/sparc/kernel/apc.c @@ -10,7 +10,6 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/miscdevice.h> -#include <linux/smp_lock.h> #include <linux/pm.h> #include <linux/of.h> #include <linux/of_device.h> @@ -76,7 +75,6 @@ static inline void apc_free(struct of_device *op) static int apc_open(struct inode *inode, struct file *f) { - cycle_kernel_lock(); return 0; } @@ -87,61 +85,46 @@ static int apc_release(struct inode *inode, struct file *f) static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg) { - __u8 inarg, __user *arg; - - arg = (__u8 __user *) __arg; - - lock_kernel(); + __u8 inarg, __user *arg = (__u8 __user *) __arg; switch (cmd) { case APCIOCGFANCTL: - if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg)) return -EFAULT; - } break; case APCIOCGCPWR: - if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg)) return -EFAULT; - } break; case APCIOCGBPORT: - if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) { - unlock_kernel(); + if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg)) return -EFAULT; - } break; case APCIOCSFANCTL: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_REGMASK, APC_FANCTL_REG); break; + case APCIOCSCPWR: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_REGMASK, APC_CPOWER_REG); break; + case APCIOCSBPORT: - if (get_user(inarg, arg)) { - unlock_kernel(); + if (get_user(inarg, arg)) return -EFAULT; - } apc_writeb(inarg & APC_BPMASK, APC_BPORT_REG); break; + default: - unlock_kernel(); return -EINVAL; }; - unlock_kernel(); return 0; } diff --git a/arch/sparc/kernel/auxio_32.c b/arch/sparc/kernel/auxio_32.c index 45c41232fc4c..ee8d214cae1e 100644 --- a/arch/sparc/kernel/auxio_32.c +++ b/arch/sparc/kernel/auxio_32.c @@ -28,6 +28,7 @@ void __init auxio_probe(void) struct resource r; switch (sparc_cpu_model) { + case sparc_leon: case sun4d: case sun4: return; diff --git a/arch/sparc/kernel/btext.c b/arch/sparc/kernel/btext.c new file mode 100644 index 000000000000..8cc2d56ffe9a --- /dev/null +++ b/arch/sparc/kernel/btext.c @@ -0,0 +1,673 @@ +/* + * Procedures for drawing on the screen early on in the boot process. + * + * Benjamin Herrenschmidt <benh@kernel.crashing.org> + */ +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/console.h> + +#include <asm/btext.h> +#include <asm/oplib.h> +#include <asm/io.h> + +#define NO_SCROLL + +#ifndef NO_SCROLL +static void scrollscreen(void); +#endif + +static void draw_byte(unsigned char c, long locX, long locY); +static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb); +static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb); +static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb); + +#define __force_data __attribute__((__section__(".data"))) + +static int g_loc_X __force_data; +static int g_loc_Y __force_data; +static int g_max_loc_X __force_data; +static int g_max_loc_Y __force_data; + +static int dispDeviceRowBytes __force_data; +static int dispDeviceDepth __force_data; +static int dispDeviceRect[4] __force_data; +static unsigned char *dispDeviceBase __force_data; + +#define cmapsz (16*256) + +static unsigned char vga_font[cmapsz]; + +static int __init btext_initialize(unsigned int node) +{ + unsigned int width, height, depth, pitch; + unsigned long address = 0; + u32 prop; + + if (prom_getproperty(node, "width", (char *)&width, 4) < 0) + return -EINVAL; + if (prom_getproperty(node, "height", (char *)&height, 4) < 0) + return -EINVAL; + if (prom_getproperty(node, "depth", (char *)&depth, 4) < 0) + return -EINVAL; + pitch = width * ((depth + 7) / 8); + + if (prom_getproperty(node, "linebytes", (char *)&prop, 4) >= 0 && + prop != 0xffffffffu) + pitch = prop; + + if (pitch == 1) + pitch = 0x1000; + + if (prom_getproperty(node, "address", (char *)&prop, 4) >= 0) + address = prop; + + /* FIXME: Add support for PCI reg properties. Right now, only + * reliable on macs + */ + if (address == 0) + return -EINVAL; + + g_loc_X = 0; + g_loc_Y = 0; + g_max_loc_X = width / 8; + g_max_loc_Y = height / 16; + dispDeviceBase = (unsigned char *)address; + dispDeviceRowBytes = pitch; + dispDeviceDepth = depth == 15 ? 16 : depth; + dispDeviceRect[0] = dispDeviceRect[1] = 0; + dispDeviceRect[2] = width; + dispDeviceRect[3] = height; + + return 0; +} + +/* Calc the base address of a given point (x,y) */ +static unsigned char * calc_base(int x, int y) +{ + unsigned char *base = dispDeviceBase; + + base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3); + base += (y + dispDeviceRect[1]) * dispDeviceRowBytes; + return base; +} + +static void btext_clearscreen(void) +{ + unsigned int *base = (unsigned int *)calc_base(0, 0); + unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) * + (dispDeviceDepth >> 3)) >> 2; + int i,j; + + for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++) + { + unsigned int *ptr = base; + for(j=width; j; --j) + *(ptr++) = 0; + base += (dispDeviceRowBytes >> 2); + } +} + +#ifndef NO_SCROLL +static void scrollscreen(void) +{ + unsigned int *src = (unsigned int *)calc_base(0,16); + unsigned int *dst = (unsigned int *)calc_base(0,0); + unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) * + (dispDeviceDepth >> 3)) >> 2; + int i,j; + + for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++) + { + unsigned int *src_ptr = src; + unsigned int *dst_ptr = dst; + for(j=width; j; --j) + *(dst_ptr++) = *(src_ptr++); + src += (dispDeviceRowBytes >> 2); + dst += (dispDeviceRowBytes >> 2); + } + for (i=0; i<16; i++) + { + unsigned int *dst_ptr = dst; + for(j=width; j; --j) + *(dst_ptr++) = 0; + dst += (dispDeviceRowBytes >> 2); + } +} +#endif /* ndef NO_SCROLL */ + +void btext_drawchar(char c) +{ + int cline = 0; +#ifdef NO_SCROLL + int x; +#endif + switch (c) { + case '\b': + if (g_loc_X > 0) + --g_loc_X; + break; + case '\t': + g_loc_X = (g_loc_X & -8) + 8; + break; + case '\r': + g_loc_X = 0; + break; + case '\n': + g_loc_X = 0; + g_loc_Y++; + cline = 1; + break; + default: + draw_byte(c, g_loc_X++, g_loc_Y); + } + if (g_loc_X >= g_max_loc_X) { + g_loc_X = 0; + g_loc_Y++; + cline = 1; + } +#ifndef NO_SCROLL + while (g_loc_Y >= g_max_loc_Y) { + scrollscreen(); + g_loc_Y--; + } +#else + /* wrap around from bottom to top of screen so we don't + waste time scrolling each line. -- paulus. */ + if (g_loc_Y >= g_max_loc_Y) + g_loc_Y = 0; + if (cline) { + for (x = 0; x < g_max_loc_X; ++x) + draw_byte(' ', x, g_loc_Y); + } +#endif +} + +static void btext_drawtext(const char *c, unsigned int len) +{ + while (len--) + btext_drawchar(*c++); +} + +static void draw_byte(unsigned char c, long locX, long locY) +{ + unsigned char *base = calc_base(locX << 3, locY << 4); + unsigned char *font = &vga_font[((unsigned int)c) * 16]; + int rb = dispDeviceRowBytes; + + switch(dispDeviceDepth) { + case 24: + case 32: + draw_byte_32(font, (unsigned int *)base, rb); + break; + case 15: + case 16: + draw_byte_16(font, (unsigned int *)base, rb); + break; + case 8: + draw_byte_8(font, (unsigned int *)base, rb); + break; + } +} + +static unsigned int expand_bits_8[16] = { + 0x00000000, + 0x000000ff, + 0x0000ff00, + 0x0000ffff, + 0x00ff0000, + 0x00ff00ff, + 0x00ffff00, + 0x00ffffff, + 0xff000000, + 0xff0000ff, + 0xff00ff00, + 0xff00ffff, + 0xffff0000, + 0xffff00ff, + 0xffffff00, + 0xffffffff +}; + +static unsigned int expand_bits_16[4] = { + 0x00000000, + 0x0000ffff, + 0xffff0000, + 0xffffffff +}; + + +static void draw_byte_32(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0xFFFFFFFFUL; + int bg = 0x00000000UL; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (-(bits >> 7) & fg) ^ bg; + base[1] = (-((bits >> 6) & 1) & fg) ^ bg; + base[2] = (-((bits >> 5) & 1) & fg) ^ bg; + base[3] = (-((bits >> 4) & 1) & fg) ^ bg; + base[4] = (-((bits >> 3) & 1) & fg) ^ bg; + base[5] = (-((bits >> 2) & 1) & fg) ^ bg; + base[6] = (-((bits >> 1) & 1) & fg) ^ bg; + base[7] = (-(bits & 1) & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void draw_byte_16(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0xFFFFFFFFUL; + int bg = 0x00000000UL; + unsigned int *eb = (int *)expand_bits_16; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (eb[bits >> 6] & fg) ^ bg; + base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg; + base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg; + base[3] = (eb[bits & 3] & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void draw_byte_8(unsigned char *font, unsigned int *base, int rb) +{ + int l, bits; + int fg = 0x0F0F0F0FUL; + int bg = 0x00000000UL; + unsigned int *eb = (int *)expand_bits_8; + + for (l = 0; l < 16; ++l) + { + bits = *font++; + base[0] = (eb[bits >> 4] & fg) ^ bg; + base[1] = (eb[bits & 0xf] & fg) ^ bg; + base = (unsigned int *) ((char *)base + rb); + } +} + +static void btext_console_write(struct console *con, const char *s, + unsigned int n) +{ + btext_drawtext(s, n); +} + +static struct console btext_console = { + .name = "btext", + .write = btext_console_write, + .flags = CON_PRINTBUFFER | CON_ENABLED | CON_BOOT | CON_ANYTIME, + .index = 0, +}; + +int __init btext_find_display(void) +{ + unsigned int node; + char type[32]; + int ret; + + node = prom_inst2pkg(prom_stdout); + if (prom_getproperty(node, "device_type", type, 32) < 0) + return -ENODEV; + if (strcmp(type, "display")) + return -ENODEV; + + ret = btext_initialize(node); + if (!ret) { + btext_clearscreen(); + register_console(&btext_console); + } + return ret; +} + +static unsigned char vga_font[cmapsz] = { +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd, +0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff, +0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 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0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x0c, 0x0c, +0x0c, 0x0c, 0x0c, 0xec, 0x6c, 0x6c, 0x3c, 0x1c, 0x00, 0x00, 0x00, 0x00, +0x00, 0xd8, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0xd8, 0x30, 0x60, 0xc8, 0xf8, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +0x00, 0x00, 0x00, 0x00, +}; diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c index f3b5466c389c..4589ca33220f 100644 --- a/arch/sparc/kernel/central.c +++ b/arch/sparc/kernel/central.c @@ -99,7 +99,7 @@ static int __devinit clock_board_probe(struct of_device *op, p->leds_resource.start = (unsigned long) (p->clock_regs + CLOCK_CTRL); - p->leds_resource.end = p->leds_resource.end; + p->leds_resource.end = p->leds_resource.start; p->leds_resource.name = "leds"; p->leds_pdev.name = "sunfire-clockboard-leds"; @@ -194,7 +194,7 @@ static int __devinit fhc_probe(struct of_device *op, if (!p->central) { p->leds_resource.start = (unsigned long) (p->pregs + FHC_PREGS_CTRL); - p->leds_resource.end = p->leds_resource.end; + p->leds_resource.end = p->leds_resource.start; p->leds_resource.name = "leds"; p->leds_pdev.name = "sunfire-fhc-leds"; diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c index 1446df90ef85..e447938d39cf 100644 --- a/arch/sparc/kernel/cpu.c +++ b/arch/sparc/kernel/cpu.c @@ -185,6 +185,17 @@ static const struct manufacturer_info __initconst manufacturer_info[] = { FPU(-1, NULL) } },{ + 0xF, /* Aeroflex Gaisler */ + .cpu_info = { + CPU(3, "LEON"), + CPU(-1, NULL) + }, + .fpu_info = { + FPU(2, "GRFPU"), + FPU(3, "GRFPU-Lite"), + FPU(-1, NULL) + } +},{ 0x17, .cpu_info = { CPU_PMU(0x10, "TI UltraSparc I (SpitFire)", "ultra12"), diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index f41ecc5ac0b4..1504df8ddf70 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -400,6 +400,39 @@ linux_trap_ipi15_sun4d: /* FIXME */ 1: b,a 1b +#ifdef CONFIG_SPARC_LEON + + .globl smpleon_ticker + /* SMP per-cpu ticker interrupts are handled specially. */ +smpleon_ticker: + SAVE_ALL + or %l0, PSR_PIL, %g2 + wr %g2, 0x0, %psr + WRITE_PAUSE + wr %g2, PSR_ET, %psr + WRITE_PAUSE + call leon_percpu_timer_interrupt + add %sp, STACKFRAME_SZ, %o0 + wr %l0, PSR_ET, %psr + WRITE_PAUSE + RESTORE_ALL + + .align 4 + .globl linux_trap_ipi15_leon +linux_trap_ipi15_leon: + SAVE_ALL + or %l0, PSR_PIL, %l4 + wr %l4, 0x0, %psr + WRITE_PAUSE + wr %l4, PSR_ET, %psr + WRITE_PAUSE + call leon_cross_call_irq + nop + b ret_trap_lockless_ipi + clr %l6 + +#endif /* CONFIG_SPARC_LEON */ + #endif /* CONFIG_SMP */ /* This routine handles illegal instructions and privileged @@ -1261,7 +1294,7 @@ linux_sparc_syscall: sethi %hi(PSR_SYSCALL), %l4 or %l0, %l4, %l0 /* Direct access to user regs, must faster. */ - cmp %g1, NR_SYSCALLS + cmp %g1, NR_syscalls bgeu linux_sparc_ni_syscall sll %g1, 2, %l4 ld [%l7 + %l4], %l7 diff --git a/arch/sparc/kernel/ftrace.c b/arch/sparc/kernel/ftrace.c index d3b1a3076569..29973daa9930 100644 --- a/arch/sparc/kernel/ftrace.c +++ b/arch/sparc/kernel/ftrace.c @@ -4,6 +4,7 @@ #include <linux/percpu.h> #include <linux/init.h> #include <linux/list.h> +#include <trace/syscall.h> #include <asm/ftrace.h> @@ -91,3 +92,13 @@ int __init ftrace_dyn_arch_init(void *data) } #endif +#ifdef CONFIG_FTRACE_SYSCALLS + +extern unsigned int sys_call_table[]; + +unsigned long __init arch_syscall_addr(int nr) +{ + return (unsigned long)sys_call_table[nr]; +} + +#endif diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S index 439d82a95ac9..21bb2590d4ae 100644 --- a/arch/sparc/kernel/head_32.S +++ b/arch/sparc/kernel/head_32.S @@ -811,9 +811,31 @@ found_version: got_prop: #ifdef CONFIG_SPARC_LEON /* no cpu-type check is needed, it is a SPARC-LEON */ +#ifdef CONFIG_SMP + ba leon_smp_init + nop + + .global leon_smp_init +leon_smp_init: + sethi %hi(boot_cpu_id), %g1 ! master always 0 + stb %g0, [%g1 + %lo(boot_cpu_id)] + sethi %hi(boot_cpu_id4), %g1 ! master always 0 + stb %g0, [%g1 + %lo(boot_cpu_id4)] + + rd %asr17,%g1 + srl %g1,28,%g1 + + cmp %g0,%g1 + beq sun4c_continue_boot !continue with master + nop + + ba leon_smp_cpu_startup + nop +#else ba sun4c_continue_boot nop #endif +#endif set cputypval, %o2 ldub [%o2 + 0x4], %l1 diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index 7690cc219ecc..5fad94950e76 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -11,6 +11,7 @@ #include <linux/dma-mapping.h> #include <linux/errno.h> #include <linux/iommu-helper.h> +#include <linux/bitmap.h> #ifdef CONFIG_PCI #include <linux/pci.h> @@ -169,7 +170,7 @@ void iommu_range_free(struct iommu *iommu, dma_addr_t dma_addr, unsigned long np entry = (dma_addr - iommu->page_table_map_base) >> IO_PAGE_SHIFT; - iommu_area_free(arena->map, entry, npages); + bitmap_clear(arena->map, entry, npages); } int iommu_table_init(struct iommu *iommu, int tsbsize, diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index 9f61fd8cbb7b..3c8c44f6a41c 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -48,8 +48,13 @@ #include <asm/dma.h> #include <asm/iommu.h> #include <asm/io-unit.h> +#include <asm/leon.h> +#ifdef CONFIG_SPARC_LEON +#define mmu_inval_dma_area(p, l) leon_flush_dcache_all() +#else #define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */ +#endif static struct resource *_sparc_find_resource(struct resource *r, unsigned long); diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c index 8ab1d4728a4b..e1cbdb94d97b 100644 --- a/arch/sparc/kernel/irq_64.c +++ b/arch/sparc/kernel/irq_64.c @@ -176,7 +176,7 @@ int show_interrupts(struct seq_file *p, void *v) } if (i < NR_IRQS) { - spin_lock_irqsave(&irq_desc[i].lock, flags); + raw_spin_lock_irqsave(&irq_desc[i].lock, flags); action = irq_desc[i].action; if (!action) goto skip; @@ -187,7 +187,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(i, j)); #endif - seq_printf(p, " %9s", irq_desc[i].chip->typename); + seq_printf(p, " %9s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) @@ -195,7 +195,7 @@ int show_interrupts(struct seq_file *p, void *v) seq_putc(p, '\n'); skip: - spin_unlock_irqrestore(&irq_desc[i].lock, flags); + raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags); } else if (i == NR_IRQS) { seq_printf(p, "NMI: "); for_each_online_cpu(j) @@ -250,12 +250,12 @@ struct irq_handler_data { }; #ifdef CONFIG_SMP -static int irq_choose_cpu(unsigned int virt_irq) +static int irq_choose_cpu(unsigned int virt_irq, const struct cpumask *affinity) { cpumask_t mask; int cpuid; - cpumask_copy(&mask, irq_desc[virt_irq].affinity); + cpumask_copy(&mask, affinity); if (cpus_equal(mask, cpu_online_map)) { cpuid = map_to_cpu(virt_irq); } else { @@ -268,10 +268,8 @@ static int irq_choose_cpu(unsigned int virt_irq) return cpuid; } #else -static int irq_choose_cpu(unsigned int virt_irq) -{ - return real_hard_smp_processor_id(); -} +#define irq_choose_cpu(virt_irq, affinity) \ + real_hard_smp_processor_id() #endif static void sun4u_irq_enable(unsigned int virt_irq) @@ -282,7 +280,8 @@ static void sun4u_irq_enable(unsigned int virt_irq) unsigned long cpuid, imap, val; unsigned int tid; - cpuid = irq_choose_cpu(virt_irq); + cpuid = irq_choose_cpu(virt_irq, + irq_desc[virt_irq].affinity); imap = data->imap; tid = sun4u_compute_tid(imap, cpuid); @@ -299,7 +298,24 @@ static void sun4u_irq_enable(unsigned int virt_irq) static int sun4u_set_affinity(unsigned int virt_irq, const struct cpumask *mask) { - sun4u_irq_enable(virt_irq); + struct irq_handler_data *data = get_irq_chip_data(virt_irq); + + if (likely(data)) { + unsigned long cpuid, imap, val; + unsigned int tid; + + cpuid = irq_choose_cpu(virt_irq, mask); + imap = data->imap; + + tid = sun4u_compute_tid(imap, cpuid); + + val = upa_readq(imap); + val &= ~(IMAP_TID_UPA | IMAP_TID_JBUS | + IMAP_AID_SAFARI | IMAP_NID_SAFARI); + val |= tid | IMAP_VALID; + upa_writeq(val, imap); + upa_writeq(ICLR_IDLE, data->iclr); + } return 0; } @@ -340,7 +356,8 @@ static void sun4u_irq_eoi(unsigned int virt_irq) static void sun4v_irq_enable(unsigned int virt_irq) { unsigned int ino = virt_irq_table[virt_irq].dev_ino; - unsigned long cpuid = irq_choose_cpu(virt_irq); + unsigned long cpuid = irq_choose_cpu(virt_irq, + irq_desc[virt_irq].affinity); int err; err = sun4v_intr_settarget(ino, cpuid); @@ -361,7 +378,7 @@ static int sun4v_set_affinity(unsigned int virt_irq, const struct cpumask *mask) { unsigned int ino = virt_irq_table[virt_irq].dev_ino; - unsigned long cpuid = irq_choose_cpu(virt_irq); + unsigned long cpuid = irq_choose_cpu(virt_irq, mask); int err; err = sun4v_intr_settarget(ino, cpuid); @@ -403,7 +420,7 @@ static void sun4v_virq_enable(unsigned int virt_irq) unsigned long cpuid, dev_handle, dev_ino; int err; - cpuid = irq_choose_cpu(virt_irq); + cpuid = irq_choose_cpu(virt_irq, irq_desc[virt_irq].affinity); dev_handle = virt_irq_table[virt_irq].dev_handle; dev_ino = virt_irq_table[virt_irq].dev_ino; @@ -433,7 +450,7 @@ static int sun4v_virt_set_affinity(unsigned int virt_irq, unsigned long cpuid, dev_handle, dev_ino; int err; - cpuid = irq_choose_cpu(virt_irq); + cpuid = irq_choose_cpu(virt_irq, mask); dev_handle = virt_irq_table[virt_irq].dev_handle; dev_ino = virt_irq_table[virt_irq].dev_ino; @@ -484,7 +501,7 @@ static void sun4v_virq_eoi(unsigned int virt_irq) } static struct irq_chip sun4u_irq = { - .typename = "sun4u", + .name = "sun4u", .enable = sun4u_irq_enable, .disable = sun4u_irq_disable, .eoi = sun4u_irq_eoi, @@ -492,7 +509,7 @@ static struct irq_chip sun4u_irq = { }; static struct irq_chip sun4v_irq = { - .typename = "sun4v", + .name = "sun4v", .enable = sun4v_irq_enable, .disable = sun4v_irq_disable, .eoi = sun4v_irq_eoi, @@ -500,7 +517,7 @@ static struct irq_chip sun4v_irq = { }; static struct irq_chip sun4v_virq = { - .typename = "vsun4v", + .name = "vsun4v", .enable = sun4v_virq_enable, .disable = sun4v_virq_disable, .eoi = sun4v_virq_eoi, @@ -785,14 +802,14 @@ void fixup_irqs(void) for (irq = 0; irq < NR_IRQS; irq++) { unsigned long flags; - spin_lock_irqsave(&irq_desc[irq].lock, flags); + raw_spin_lock_irqsave(&irq_desc[irq].lock, flags); if (irq_desc[irq].action && !(irq_desc[irq].status & IRQ_PER_CPU)) { if (irq_desc[irq].chip->set_affinity) irq_desc[irq].chip->set_affinity(irq, irq_desc[irq].affinity); } - spin_unlock_irqrestore(&irq_desc[irq].lock, flags); + raw_spin_unlock_irqrestore(&irq_desc[irq].lock, flags); } tick_ops->disable_irq(); diff --git a/arch/sparc/kernel/kprobes.c b/arch/sparc/kernel/kprobes.c index 3bc6527c95af..6716584e48ab 100644 --- a/arch/sparc/kernel/kprobes.c +++ b/arch/sparc/kernel/kprobes.c @@ -46,6 +46,9 @@ struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}}; int __kprobes arch_prepare_kprobe(struct kprobe *p) { + if ((unsigned long) p->addr & 0x3UL) + return -EILSEQ; + p->ainsn.insn[0] = *p->addr; flushi(&p->ainsn.insn[0]); diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index adf5f273868a..df39a0f0d27a 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -14,6 +14,7 @@ #include <linux/interrupt.h> #include <linux/list.h> #include <linux/init.h> +#include <linux/bitmap.h> #include <asm/hypervisor.h> #include <asm/iommu.h> @@ -1242,13 +1243,13 @@ int ldc_bind(struct ldc_channel *lp, const char *name) snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name); err = request_irq(lp->cfg.rx_irq, ldc_rx, - IRQF_SAMPLE_RANDOM | IRQF_SHARED, + IRQF_SAMPLE_RANDOM | IRQF_DISABLED, lp->rx_irq_name, lp); if (err) return err; err = request_irq(lp->cfg.tx_irq, ldc_tx, - IRQF_SAMPLE_RANDOM | IRQF_SHARED, + IRQF_SAMPLE_RANDOM | IRQF_DISABLED, lp->tx_irq_name, lp); if (err) { free_irq(lp->cfg.rx_irq, lp); @@ -1875,7 +1876,7 @@ EXPORT_SYMBOL(ldc_read); static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages) { struct iommu_arena *arena = &iommu->arena; - unsigned long n, i, start, end, limit; + unsigned long n, start, end, limit; int pass; limit = arena->limit; @@ -1883,7 +1884,7 @@ static long arena_alloc(struct ldc_iommu *iommu, unsigned long npages) pass = 0; again: - n = find_next_zero_bit(arena->map, limit, start); + n = bitmap_find_next_zero_area(arena->map, limit, start, npages, 0); end = n + npages; if (unlikely(end >= limit)) { if (likely(pass < 1)) { @@ -1896,16 +1897,7 @@ again: return -1; } } - - for (i = n; i < end; i++) { - if (test_bit(i, arena->map)) { - start = i + 1; - goto again; - } - } - - for (i = n; i < end; i++) - __set_bit(i, arena->map); + bitmap_set(arena->map, n, npages); arena->hint = end; diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index 54d8a5bd4824..87f1760c0aa2 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -12,11 +12,14 @@ #include <linux/of_platform.h> #include <linux/interrupt.h> #include <linux/of_device.h> + #include <asm/oplib.h> #include <asm/timer.h> #include <asm/prom.h> #include <asm/leon.h> #include <asm/leon_amba.h> +#include <asm/traps.h> +#include <asm/cacheflush.h> #include "prom.h" #include "irq.h" @@ -115,6 +118,21 @@ void __init leon_init_timers(irq_handler_t counter_fn) (((1000000 / 100) - 1))); LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, 0); +#ifdef CONFIG_SMP + leon_percpu_timer_dev[0].start = (int)leon3_gptimer_regs; + leon_percpu_timer_dev[0].irq = leon3_gptimer_irq+1; + + if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) & + (1<<LEON3_GPTIMER_SEPIRQ))) { + prom_printf("irq timer not configured with seperate irqs \n"); + BUG(); + } + + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].val, 0); + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].rld, (((1000000/100) - 1))); + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, 0); +# endif + } else { printk(KERN_ERR "No Timer/irqctrl found\n"); BUG(); @@ -130,11 +148,41 @@ void __init leon_init_timers(irq_handler_t counter_fn) prom_halt(); } +# ifdef CONFIG_SMP + { + unsigned long flags; + struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_percpu_timer_dev[0].irq - 1)]; + + /* For SMP we use the level 14 ticker, however the bootup code + * has copied the firmwares level 14 vector into boot cpu's + * trap table, we must fix this now or we get squashed. + */ + local_irq_save(flags); + + patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */ + + /* Adjust so that we jump directly to smpleon_ticker */ + trap_table->inst_three += smpleon_ticker - real_irq_entry; + + local_flush_cache_all(); + local_irq_restore(flags); + } +# endif + if (leon3_gptimer_regs) { LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].ctrl, LEON3_GPTIMER_EN | LEON3_GPTIMER_RL | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN); + +#ifdef CONFIG_SMP + LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[1].ctrl, + LEON3_GPTIMER_EN | + LEON3_GPTIMER_RL | + LEON3_GPTIMER_LD | + LEON3_GPTIMER_IRQEN); +#endif + } } @@ -175,6 +223,42 @@ void __init leon_node_init(struct device_node *dp, struct device_node ***nextp) } } +#ifdef CONFIG_SMP + +void leon_set_cpu_int(int cpu, int level) +{ + unsigned long mask; + mask = get_irqmask(level); + LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask); +} + +static void leon_clear_ipi(int cpu, int level) +{ + unsigned long mask; + mask = get_irqmask(level); + LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask<<16); +} + +static void leon_set_udt(int cpu) +{ +} + +void leon_clear_profile_irq(int cpu) +{ +} + +void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu) +{ + unsigned long mask, flags, *addr; + mask = get_irqmask(irq_nr); + local_irq_save(flags); + addr = (unsigned long *)&(leon3_irqctrl_regs->mask[cpu]); + LEON3_BYPASS_STORE_PA(addr, (LEON3_BYPASS_LOAD_PA(addr) | (mask))); + local_irq_restore(flags); +} + +#endif + void __init leon_init_IRQ(void) { sparc_init_timers = leon_init_timers; diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c new file mode 100644 index 000000000000..05c0dadd6371 --- /dev/null +++ b/arch/sparc/kernel/leon_smp.c @@ -0,0 +1,468 @@ +/* leon_smp.c: Sparc-Leon SMP support. + * + * based on sun4m_smp.c + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB + * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB + */ + +#include <asm/head.h> + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/threads.h> +#include <linux/smp.h> +#include <linux/smp_lock.h> +#include <linux/interrupt.h> +#include <linux/kernel_stat.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/profile.h> +#include <linux/pm.h> +#include <linux/delay.h> + +#include <asm/cacheflush.h> +#include <asm/tlbflush.h> + +#include <asm/ptrace.h> +#include <asm/atomic.h> +#include <asm/irq_regs.h> + +#include <asm/delay.h> +#include <asm/irq.h> +#include <asm/page.h> +#include <asm/pgalloc.h> +#include <asm/pgtable.h> +#include <asm/oplib.h> +#include <asm/cpudata.h> +#include <asm/asi.h> +#include <asm/leon.h> +#include <asm/leon_amba.h> + +#ifdef CONFIG_SPARC_LEON + +#include "irq.h" + +extern ctxd_t *srmmu_ctx_table_phys; +static int smp_processors_ready; +extern volatile unsigned long cpu_callin_map[NR_CPUS]; +extern unsigned char boot_cpu_id; +extern cpumask_t smp_commenced_mask; +void __init leon_configure_cache_smp(void); + +static inline unsigned long do_swap(volatile unsigned long *ptr, + unsigned long val) +{ + __asm__ __volatile__("swapa [%1] %2, %0\n\t" : "=&r"(val) + : "r"(ptr), "i"(ASI_LEON_DCACHE_MISS) + : "memory"); + return val; +} + +static void smp_setup_percpu_timer(void); + +void __cpuinit leon_callin(void) +{ + int cpuid = hard_smpleon_processor_id(); + + local_flush_cache_all(); + local_flush_tlb_all(); + leon_configure_cache_smp(); + + /* Get our local ticker going. */ + smp_setup_percpu_timer(); + + calibrate_delay(); + smp_store_cpu_info(cpuid); + + local_flush_cache_all(); + local_flush_tlb_all(); + + /* + * Unblock the master CPU _only_ when the scheduler state + * of all secondary CPUs will be up-to-date, so after + * the SMP initialization the master will be just allowed + * to call the scheduler code. + * Allow master to continue. + */ + do_swap(&cpu_callin_map[cpuid], 1); + + local_flush_cache_all(); + local_flush_tlb_all(); + + cpu_probe(); + + /* Fix idle thread fields. */ + __asm__ __volatile__("ld [%0], %%g6\n\t" : : "r"(¤t_set[cpuid]) + : "memory" /* paranoid */); + + /* Attach to the address space of init_task. */ + atomic_inc(&init_mm.mm_count); + current->active_mm = &init_mm; + + while (!cpu_isset(cpuid, smp_commenced_mask)) + mb(); + + local_irq_enable(); + cpu_set(cpuid, cpu_online_map); +} + +/* + * Cycle through the processors asking the PROM to start each one. + */ + +extern struct linux_prom_registers smp_penguin_ctable; + +void __init leon_configure_cache_smp(void) +{ + unsigned long cfg = sparc_leon3_get_dcachecfg(); + int me = smp_processor_id(); + + if (ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg) > 4) { + printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disabling caches\n", + (unsigned int)ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg), + (unsigned int)cfg, (unsigned int)me); + sparc_leon3_disable_cache(); + } else { + if (cfg & ASI_LEON3_SYSCTRL_CFG_SNOOPING) { + sparc_leon3_enable_snooping(); + } else { + printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n", + me); + sparc_leon3_disable_cache(); + } + } + + local_flush_cache_all(); + local_flush_tlb_all(); +} + +void leon_smp_setbroadcast(unsigned int mask) +{ + int broadcast = + ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >> + LEON3_IRQMPSTATUS_BROADCAST) & 1); + if (!broadcast) { + prom_printf("######## !!!! The irqmp-ctrl must have broadcast enabled, smp wont work !!!!! ####### nr cpus: %d\n", + leon_smp_nrcpus()); + if (leon_smp_nrcpus() > 1) { + BUG(); + } else { + prom_printf("continue anyway\n"); + return; + } + } + LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpbroadcast), mask); +} + +unsigned int leon_smp_getbroadcast(void) +{ + unsigned int mask; + mask = LEON_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpbroadcast)); + return mask; +} + +int leon_smp_nrcpus(void) +{ + int nrcpu = + ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >> + LEON3_IRQMPSTATUS_CPUNR) & 0xf) + 1; + return nrcpu; +} + +void __init leon_boot_cpus(void) +{ + int nrcpu = leon_smp_nrcpus(); + int me = smp_processor_id(); + + printk(KERN_INFO "%d:(%d:%d) cpus mpirq at 0x%x \n", (unsigned int)me, + (unsigned int)nrcpu, (unsigned int)NR_CPUS, + (unsigned int)&(leon3_irqctrl_regs->mpstatus)); + + leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, me); + leon_enable_irq_cpu(LEON3_IRQ_TICKER, me); + leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, me); + + leon_smp_setbroadcast(1 << LEON3_IRQ_TICKER); + + leon_configure_cache_smp(); + smp_setup_percpu_timer(); + local_flush_cache_all(); + +} + +int __cpuinit leon_boot_one_cpu(int i) +{ + + struct task_struct *p; + int timeout; + + /* Cook up an idler for this guy. */ + p = fork_idle(i); + + current_set[i] = task_thread_info(p); + + /* See trampoline.S:leon_smp_cpu_startup for details... + * Initialize the contexts table + * Since the call to prom_startcpu() trashes the structure, + * we need to re-initialize it for each cpu + */ + smp_penguin_ctable.which_io = 0; + smp_penguin_ctable.phys_addr = (unsigned int)srmmu_ctx_table_phys; + smp_penguin_ctable.reg_size = 0; + + /* whirrr, whirrr, whirrrrrrrrr... */ + printk(KERN_INFO "Starting CPU %d : (irqmp: 0x%x)\n", (unsigned int)i, + (unsigned int)&leon3_irqctrl_regs->mpstatus); + local_flush_cache_all(); + + LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpstatus), 1 << i); + + /* wheee... it's going... */ + for (timeout = 0; timeout < 10000; timeout++) { + if (cpu_callin_map[i]) + break; + udelay(200); + } + printk(KERN_INFO "Started CPU %d \n", (unsigned int)i); + + if (!(cpu_callin_map[i])) { + printk(KERN_ERR "Processor %d is stuck.\n", i); + return -ENODEV; + } else { + leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, i); + leon_enable_irq_cpu(LEON3_IRQ_TICKER, i); + leon_enable_irq_cpu(LEON3_IRQ_RESCHEDULE, i); + } + + local_flush_cache_all(); + return 0; +} + +void __init leon_smp_done(void) +{ + + int i, first; + int *prev; + + /* setup cpu list for irq rotation */ + first = 0; + prev = &first; + for (i = 0; i < NR_CPUS; i++) { + if (cpu_online(i)) { + *prev = i; + prev = &cpu_data(i).next; + } + } + *prev = first; + local_flush_cache_all(); + + /* Free unneeded trap tables */ + if (!cpu_isset(1, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu1)); + init_page_count(virt_to_page(trapbase_cpu1)); + free_page((unsigned long)trapbase_cpu1); + totalram_pages++; + num_physpages++; + } + if (!cpu_isset(2, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu2)); + init_page_count(virt_to_page(trapbase_cpu2)); + free_page((unsigned long)trapbase_cpu2); + totalram_pages++; + num_physpages++; + } + if (!cpu_isset(3, cpu_present_map)) { + ClearPageReserved(virt_to_page(trapbase_cpu3)); + init_page_count(virt_to_page(trapbase_cpu3)); + free_page((unsigned long)trapbase_cpu3); + totalram_pages++; + num_physpages++; + } + /* Ok, they are spinning and ready to go. */ + smp_processors_ready = 1; + +} + +void leon_irq_rotate(int cpu) +{ +} + +static struct smp_funcall { + smpfunc_t func; + unsigned long arg1; + unsigned long arg2; + unsigned long arg3; + unsigned long arg4; + unsigned long arg5; + unsigned long processors_in[NR_CPUS]; /* Set when ipi entered. */ + unsigned long processors_out[NR_CPUS]; /* Set when ipi exited. */ +} ccall_info; + +static DEFINE_SPINLOCK(cross_call_lock); + +/* Cross calls must be serialized, at least currently. */ +static void leon_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1, + unsigned long arg2, unsigned long arg3, + unsigned long arg4) +{ + if (smp_processors_ready) { + register int high = NR_CPUS - 1; + unsigned long flags; + + spin_lock_irqsave(&cross_call_lock, flags); + + { + /* If you make changes here, make sure gcc generates proper code... */ + register smpfunc_t f asm("i0") = func; + register unsigned long a1 asm("i1") = arg1; + register unsigned long a2 asm("i2") = arg2; + register unsigned long a3 asm("i3") = arg3; + register unsigned long a4 asm("i4") = arg4; + register unsigned long a5 asm("i5") = 0; + + __asm__ __volatile__("std %0, [%6]\n\t" + "std %2, [%6 + 8]\n\t" + "std %4, [%6 + 16]\n\t" : : + "r"(f), "r"(a1), "r"(a2), "r"(a3), + "r"(a4), "r"(a5), + "r"(&ccall_info.func)); + } + + /* Init receive/complete mapping, plus fire the IPI's off. */ + { + register int i; + + cpu_clear(smp_processor_id(), mask); + cpus_and(mask, cpu_online_map, mask); + for (i = 0; i <= high; i++) { + if (cpu_isset(i, mask)) { + ccall_info.processors_in[i] = 0; + ccall_info.processors_out[i] = 0; + set_cpu_int(i, LEON3_IRQ_CROSS_CALL); + + } + } + } + + { + register int i; + + i = 0; + do { + if (!cpu_isset(i, mask)) + continue; + + while (!ccall_info.processors_in[i]) + barrier(); + } while (++i <= high); + + i = 0; + do { + if (!cpu_isset(i, mask)) + continue; + + while (!ccall_info.processors_out[i]) + barrier(); + } while (++i <= high); + } + + spin_unlock_irqrestore(&cross_call_lock, flags); + } +} + +/* Running cross calls. */ +void leon_cross_call_irq(void) +{ + int i = smp_processor_id(); + + ccall_info.processors_in[i] = 1; + ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3, + ccall_info.arg4, ccall_info.arg5); + ccall_info.processors_out[i] = 1; +} + +void leon_percpu_timer_interrupt(struct pt_regs *regs) +{ + struct pt_regs *old_regs; + int cpu = smp_processor_id(); + + old_regs = set_irq_regs(regs); + + leon_clear_profile_irq(cpu); + + profile_tick(CPU_PROFILING); + + if (!--prof_counter(cpu)) { + int user = user_mode(regs); + + irq_enter(); + update_process_times(user); + irq_exit(); + + prof_counter(cpu) = prof_multiplier(cpu); + } + set_irq_regs(old_regs); +} + +static void __init smp_setup_percpu_timer(void) +{ + int cpu = smp_processor_id(); + + prof_counter(cpu) = prof_multiplier(cpu) = 1; +} + +void __init leon_blackbox_id(unsigned *addr) +{ + int rd = *addr & 0x3e000000; + int rs1 = rd >> 11; + + /* patch places where ___b_hard_smp_processor_id appears */ + addr[0] = 0x81444000 | rd; /* rd %asr17, reg */ + addr[1] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */ + addr[2] = 0x01000000; /* nop */ +} + +void __init leon_blackbox_current(unsigned *addr) +{ + int rd = *addr & 0x3e000000; + int rs1 = rd >> 11; + + /* patch LOAD_CURRENT macro where ___b_load_current appears */ + addr[0] = 0x81444000 | rd; /* rd %asr17, reg */ + addr[2] = 0x8130201c | rd | rs1; /* srl reg, 0x1c, reg */ + addr[4] = 0x81282002 | rd | rs1; /* sll reg, 0x2, reg */ + +} + +/* + * CPU idle callback function + * See .../arch/sparc/kernel/process.c + */ +void pmc_leon_idle(void) +{ + __asm__ volatile ("mov %g0, %asr19"); +} + +void __init leon_init_smp(void) +{ + /* Patch ipi15 trap table */ + t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_leon - linux_trap_ipi15_sun4m); + + BTFIXUPSET_BLACKBOX(hard_smp_processor_id, leon_blackbox_id); + BTFIXUPSET_BLACKBOX(load_current, leon_blackbox_current); + BTFIXUPSET_CALL(smp_cross_call, leon_cross_call, BTFIXUPCALL_NORM); + BTFIXUPSET_CALL(__hard_smp_processor_id, __leon_processor_id, + BTFIXUPCALL_NORM); + +#ifndef PMC_NO_IDLE + /* Assign power management IDLE handler */ + pm_idle = pmc_leon_idle; + printk(KERN_INFO "leon: power management initialized\n"); +#endif + +} + +#endif /* CONFIG_SPARC_LEON */ diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c index 938da19dc065..cdc91d919e93 100644 --- a/arch/sparc/kernel/mdesc.c +++ b/arch/sparc/kernel/mdesc.c @@ -10,6 +10,7 @@ #include <linux/slab.h> #include <linux/mm.h> #include <linux/miscdevice.h> +#include <linux/bootmem.h> #include <asm/cpudata.h> #include <asm/hypervisor.h> @@ -108,25 +109,15 @@ static struct mdesc_handle * __init mdesc_lmb_alloc(unsigned int mdesc_size) static void mdesc_lmb_free(struct mdesc_handle *hp) { - unsigned int alloc_size, handle_size = hp->handle_size; - unsigned long start, end; + unsigned int alloc_size; + unsigned long start; BUG_ON(atomic_read(&hp->refcnt) != 0); BUG_ON(!list_empty(&hp->list)); - alloc_size = PAGE_ALIGN(handle_size); - - start = (unsigned long) hp; - end = start + alloc_size; - - while (start < end) { - struct page *p; - - p = virt_to_page(start); - ClearPageReserved(p); - __free_page(p); - start += PAGE_SIZE; - } + alloc_size = PAGE_ALIGN(hp->handle_size); + start = __pa(hp); + free_bootmem_late(start, alloc_size); } static struct mdesc_mem_ops lmb_mdesc_ops = { diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index b129611590a4..d242a7340541 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -47,7 +47,7 @@ static DEFINE_PER_CPU(short, wd_enabled); static int endflag __initdata; static DEFINE_PER_CPU(unsigned int, last_irq_sum); -static DEFINE_PER_CPU(local_t, alert_counter); +static DEFINE_PER_CPU(long, alert_counter); static DEFINE_PER_CPU(int, nmi_touch); void touch_nmi_watchdog(void) @@ -96,7 +96,6 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) int cpu = smp_processor_id(); clear_softint(1 << irq); - pcr_ops->write(PCR_PIC_PRIV); local_cpu_data().__nmi_count++; @@ -105,6 +104,8 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) if (notify_die(DIE_NMI, "nmi", regs, 0, pt_regs_trap_type(regs), SIGINT) == NOTIFY_STOP) touched = 1; + else + pcr_ops->write(PCR_PIC_PRIV); sum = kstat_irqs_cpu(0, cpu); if (__get_cpu_var(nmi_touch)) { @@ -112,13 +113,13 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs) touched = 1; } if (!touched && __get_cpu_var(last_irq_sum) == sum) { - local_inc(&__get_cpu_var(alert_counter)); - if (local_read(&__get_cpu_var(alert_counter)) == 30 * nmi_hz) + __this_cpu_inc(per_cpu_var(alert_counter)); + if (__this_cpu_read(per_cpu_var(alert_counter)) == 30 * nmi_hz) die_nmi("BUG: NMI Watchdog detected LOCKUP", regs, panic_on_timeout); } else { __get_cpu_var(last_irq_sum) = sum; - local_set(&__get_cpu_var(alert_counter), 0); + __this_cpu_write(per_cpu_var(alert_counter), 0); } if (__get_cpu_var(wd_enabled)) { write_pic(picl_value(nmi_hz)); diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c index 881947e59e95..0a6f2d1798d1 100644 --- a/arch/sparc/kernel/of_device_64.c +++ b/arch/sparc/kernel/of_device_64.c @@ -104,9 +104,19 @@ static int of_bus_pci_map(u32 *addr, const u32 *range, int i; /* Check address type match */ - if ((addr[0] ^ range[0]) & 0x03000000) - return -EINVAL; + if (!((addr[0] ^ range[0]) & 0x03000000)) + goto type_match; + + /* Special exception, we can map a 64-bit address into + * a 32-bit range. + */ + if ((addr[0] & 0x03000000) == 0x03000000 && + (range[0] & 0x03000000) == 0x02000000) + goto type_match; + + return -EINVAL; +type_match: if (of_out_of_range(addr + 1, range + 1, range + na + pna, na - 1, ns)) return -EINVAL; diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index c68648662802..539e83f8e087 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -1064,7 +1064,6 @@ int pci64_dma_supported(struct pci_dev *pdev, u64 device_mask) return (device_mask & dma_addr_mask) == dma_addr_mask; } -EXPORT_SYMBOL(pci_dma_supported); void pci_resource_to_user(const struct pci_dev *pdev, int bar, const struct resource *rp, resource_size_t *start, @@ -1081,3 +1080,10 @@ void pci_resource_to_user(const struct pci_dev *pdev, int bar, *start = rp->start - offset; *end = rp->end - offset; } + +static int __init pcibios_init(void) +{ + pci_dfl_cache_line_size = 64 >> 2; + return 0; +} +subsys_initcall(pcibios_init); diff --git a/arch/sparc/kernel/pci_msi.c b/arch/sparc/kernel/pci_msi.c index f1be37a7b123..e1b0541feb19 100644 --- a/arch/sparc/kernel/pci_msi.c +++ b/arch/sparc/kernel/pci_msi.c @@ -112,7 +112,7 @@ static void free_msi(struct pci_pbm_info *pbm, int msi_num) } static struct irq_chip msi_irq = { - .typename = "PCI-MSI", + .name = "PCI-MSI", .mask = mask_msi_irq, .unmask = unmask_msi_irq, .enable = unmask_msi_irq, diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c index 85e7037429b9..4e2724ec2bb6 100644 --- a/arch/sparc/kernel/pcic.c +++ b/arch/sparc/kernel/pcic.c @@ -30,6 +30,7 @@ #include <asm/oplib.h> #include <asm/prom.h> #include <asm/pcic.h> +#include <asm/timex.h> #include <asm/timer.h> #include <asm/uaccess.h> #include <asm/irq_regs.h> @@ -163,8 +164,6 @@ void __iomem *pcic_regs; volatile int pcic_speculative; volatile int pcic_trapped; -static void pci_do_gettimeofday(struct timeval *tv); -static int pci_do_settimeofday(struct timespec *tv); #define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3)) @@ -716,19 +715,27 @@ static irqreturn_t pcic_timer_handler (int irq, void *h) #define USECS_PER_JIFFY 10000 /* We have 100HZ "standard" timer for sparc */ #define TICK_TIMER_LIMIT ((100*1000000/4)/100) +u32 pci_gettimeoffset(void) +{ + /* + * We divide all by 100 + * to have microsecond resolution and to avoid overflow + */ + unsigned long count = + readl(pcic0.pcic_regs+PCI_SYS_COUNTER) & ~PCI_SYS_COUNTER_OVERFLOW; + count = ((count/100)*USECS_PER_JIFFY) / (TICK_TIMER_LIMIT/100); + return count * 1000; +} + + void __init pci_time_init(void) { struct linux_pcic *pcic = &pcic0; unsigned long v; int timer_irq, irq; - /* A hack until do_gettimeofday prototype is moved to arch specific headers - and btfixupped. Patch do_gettimeofday with ba pci_do_gettimeofday; nop */ - ((unsigned int *)do_gettimeofday)[0] = - 0x10800000 | ((((unsigned long)pci_do_gettimeofday - - (unsigned long)do_gettimeofday) >> 2) & 0x003fffff); - ((unsigned int *)do_gettimeofday)[1] = 0x01000000; - BTFIXUPSET_CALL(bus_do_settimeofday, pci_do_settimeofday, BTFIXUPCALL_NORM); + do_arch_gettimeoffset = pci_gettimeoffset; + btfixup(); writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT); @@ -746,84 +753,6 @@ void __init pci_time_init(void) local_irq_enable(); } -static inline unsigned long do_gettimeoffset(void) -{ - /* - * We divide all by 100 - * to have microsecond resolution and to avoid overflow - */ - unsigned long count = - readl(pcic0.pcic_regs+PCI_SYS_COUNTER) & ~PCI_SYS_COUNTER_OVERFLOW; - count = ((count/100)*USECS_PER_JIFFY) / (TICK_TIMER_LIMIT/100); - return count; -} - -static void pci_do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - unsigned long seq; - unsigned long usec, sec; - unsigned long max_ntp_tick = tick_usec - tickadj; - - do { - seq = read_seqbegin_irqsave(&xtime_lock, flags); - usec = do_gettimeoffset(); - - /* - * If time_adjust is negative then NTP is slowing the clock - * so make sure not to go into next possible interval. - * Better to lose some accuracy than have time go backwards.. - */ - if (unlikely(time_adjust < 0)) - usec = min(usec, max_ntp_tick); - - sec = xtime.tv_sec; - usec += (xtime.tv_nsec / 1000); - } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); - - while (usec >= 1000000) { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; -} - -static int pci_do_settimeofday(struct timespec *tv) -{ - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) - return -EINVAL; - - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * made, and then undo it! - */ - tv->tv_nsec -= 1000 * do_gettimeoffset(); - while (tv->tv_nsec < 0) { - tv->tv_nsec += NSEC_PER_SEC; - tv->tv_sec--; - } - - wall_to_monotonic.tv_sec += xtime.tv_sec - tv->tv_sec; - wall_to_monotonic.tv_nsec += xtime.tv_nsec - tv->tv_nsec; - - if (wall_to_monotonic.tv_nsec > NSEC_PER_SEC) { - wall_to_monotonic.tv_nsec -= NSEC_PER_SEC; - wall_to_monotonic.tv_sec++; - } - if (wall_to_monotonic.tv_nsec < 0) { - wall_to_monotonic.tv_nsec += NSEC_PER_SEC; - wall_to_monotonic.tv_sec--; - } - - xtime.tv_sec = tv->tv_sec; - xtime.tv_nsec = tv->tv_nsec; - ntp_clear(); - return 0; -} #if 0 static void watchdog_reset() { diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index 04db92743896..e856456ec02f 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -1,6 +1,6 @@ /* Performance event support for sparc64. * - * Copyright (C) 2009 David S. Miller <davem@davemloft.net> + * Copyright (C) 2009, 2010 David S. Miller <davem@davemloft.net> * * This code is based almost entirely upon the x86 perf event * code, which is: @@ -18,11 +18,15 @@ #include <linux/kdebug.h> #include <linux/mutex.h> +#include <asm/stacktrace.h> #include <asm/cpudata.h> +#include <asm/uaccess.h> #include <asm/atomic.h> #include <asm/nmi.h> #include <asm/pcr.h> +#include "kstack.h" + /* Sparc64 chips have two performance counters, 32-bits each, with * overflow interrupts generated on transition from 0xffffffff to 0. * The counters are accessed in one go using a 64-bit register. @@ -51,16 +55,49 @@ #define PIC_UPPER_INDEX 0 #define PIC_LOWER_INDEX 1 +#define PIC_NO_INDEX -1 struct cpu_hw_events { - struct perf_event *events[MAX_HWEVENTS]; - unsigned long used_mask[BITS_TO_LONGS(MAX_HWEVENTS)]; - unsigned long active_mask[BITS_TO_LONGS(MAX_HWEVENTS)]; + /* Number of events currently scheduled onto this cpu. + * This tells how many entries in the arrays below + * are valid. + */ + int n_events; + + /* Number of new events added since the last hw_perf_disable(). + * This works because the perf event layer always adds new + * events inside of a perf_{disable,enable}() sequence. + */ + int n_added; + + /* Array of events current scheduled on this cpu. */ + struct perf_event *event[MAX_HWEVENTS]; + + /* Array of encoded longs, specifying the %pcr register + * encoding and the mask of PIC counters this even can + * be scheduled on. See perf_event_encode() et al. + */ + unsigned long events[MAX_HWEVENTS]; + + /* The current counter index assigned to an event. When the + * event hasn't been programmed into the cpu yet, this will + * hold PIC_NO_INDEX. The event->hw.idx value tells us where + * we ought to schedule the event. + */ + int current_idx[MAX_HWEVENTS]; + + /* Software copy of %pcr register on this cpu. */ u64 pcr; + + /* Enabled/disable state. */ int enabled; }; DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = { .enabled = 1, }; +/* An event map describes the characteristics of a performance + * counter event. In particular it gives the encoding as well as + * a mask telling which counters the event can be measured on. + */ struct perf_event_map { u16 encoding; u8 pic_mask; @@ -69,15 +106,20 @@ struct perf_event_map { #define PIC_LOWER 0x02 }; +/* Encode a perf_event_map entry into a long. */ static unsigned long perf_event_encode(const struct perf_event_map *pmap) { return ((unsigned long) pmap->encoding << 16) | pmap->pic_mask; } -static void perf_event_decode(unsigned long val, u16 *enc, u8 *msk) +static u8 perf_event_get_msk(unsigned long val) { - *msk = val & 0xff; - *enc = val >> 16; + return val & 0xff; +} + +static u64 perf_event_get_enc(unsigned long val) +{ + return val >> 16; } #define C(x) PERF_COUNT_HW_CACHE_##x @@ -437,7 +479,7 @@ static const struct sparc_pmu niagara2_pmu = { .lower_shift = 6, .event_mask = 0xfff, .hv_bit = 0x8, - .irq_bit = 0x03, + .irq_bit = 0x30, .upper_nop = 0x220, .lower_nop = 0x220, }; @@ -491,53 +533,6 @@ static inline void sparc_pmu_disable_event(struct cpu_hw_events *cpuc, struct hw pcr_ops->write(cpuc->pcr); } -void hw_perf_enable(void) -{ - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - u64 val; - int i; - - if (cpuc->enabled) - return; - - cpuc->enabled = 1; - barrier(); - - val = cpuc->pcr; - - for (i = 0; i < MAX_HWEVENTS; i++) { - struct perf_event *cp = cpuc->events[i]; - struct hw_perf_event *hwc; - - if (!cp) - continue; - hwc = &cp->hw; - val |= hwc->config_base; - } - - cpuc->pcr = val; - - pcr_ops->write(cpuc->pcr); -} - -void hw_perf_disable(void) -{ - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - u64 val; - - if (!cpuc->enabled) - return; - - cpuc->enabled = 0; - - val = cpuc->pcr; - val &= ~(PCR_UTRACE | PCR_STRACE | - sparc_pmu->hv_bit | sparc_pmu->irq_bit); - cpuc->pcr = val; - - pcr_ops->write(cpuc->pcr); -} - static u32 read_pmc(int idx) { u64 val; @@ -566,6 +561,30 @@ static void write_pmc(int idx, u64 val) write_pic(pic); } +static u64 sparc_perf_event_update(struct perf_event *event, + struct hw_perf_event *hwc, int idx) +{ + int shift = 64 - 32; + u64 prev_raw_count, new_raw_count; + s64 delta; + +again: + prev_raw_count = atomic64_read(&hwc->prev_count); + new_raw_count = read_pmc(idx); + + if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count, + new_raw_count) != prev_raw_count) + goto again; + + delta = (new_raw_count << shift) - (prev_raw_count << shift); + delta >>= shift; + + atomic64_add(delta, &event->count); + atomic64_sub(delta, &hwc->period_left); + + return new_raw_count; +} + static int sparc_perf_event_set_period(struct perf_event *event, struct hw_perf_event *hwc, int idx) { @@ -598,81 +617,166 @@ static int sparc_perf_event_set_period(struct perf_event *event, return ret; } -static int sparc_pmu_enable(struct perf_event *event) +/* If performance event entries have been added, move existing + * events around (if necessary) and then assign new entries to + * counters. + */ +static u64 maybe_change_configuration(struct cpu_hw_events *cpuc, u64 pcr) { - struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); - struct hw_perf_event *hwc = &event->hw; - int idx = hwc->idx; + int i; - if (test_and_set_bit(idx, cpuc->used_mask)) - return -EAGAIN; + if (!cpuc->n_added) + goto out; - sparc_pmu_disable_event(cpuc, hwc, idx); + /* Read in the counters which are moving. */ + for (i = 0; i < cpuc->n_events; i++) { + struct perf_event *cp = cpuc->event[i]; - cpuc->events[idx] = event; - set_bit(idx, cpuc->active_mask); + if (cpuc->current_idx[i] != PIC_NO_INDEX && + cpuc->current_idx[i] != cp->hw.idx) { + sparc_perf_event_update(cp, &cp->hw, + cpuc->current_idx[i]); + cpuc->current_idx[i] = PIC_NO_INDEX; + } + } - sparc_perf_event_set_period(event, hwc, idx); - sparc_pmu_enable_event(cpuc, hwc, idx); - perf_event_update_userpage(event); - return 0; + /* Assign to counters all unassigned events. */ + for (i = 0; i < cpuc->n_events; i++) { + struct perf_event *cp = cpuc->event[i]; + struct hw_perf_event *hwc = &cp->hw; + int idx = hwc->idx; + u64 enc; + + if (cpuc->current_idx[i] != PIC_NO_INDEX) + continue; + + sparc_perf_event_set_period(cp, hwc, idx); + cpuc->current_idx[i] = idx; + + enc = perf_event_get_enc(cpuc->events[i]); + pcr |= event_encoding(enc, idx); + } +out: + return pcr; } -static u64 sparc_perf_event_update(struct perf_event *event, - struct hw_perf_event *hwc, int idx) +void hw_perf_enable(void) { - int shift = 64 - 32; - u64 prev_raw_count, new_raw_count; - s64 delta; + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + u64 pcr; -again: - prev_raw_count = atomic64_read(&hwc->prev_count); - new_raw_count = read_pmc(idx); + if (cpuc->enabled) + return; - if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count, - new_raw_count) != prev_raw_count) - goto again; + cpuc->enabled = 1; + barrier(); - delta = (new_raw_count << shift) - (prev_raw_count << shift); - delta >>= shift; + pcr = cpuc->pcr; + if (!cpuc->n_events) { + pcr = 0; + } else { + pcr = maybe_change_configuration(cpuc, pcr); - atomic64_add(delta, &event->count); - atomic64_sub(delta, &hwc->period_left); + /* We require that all of the events have the same + * configuration, so just fetch the settings from the + * first entry. + */ + cpuc->pcr = pcr | cpuc->event[0]->hw.config_base; + } - return new_raw_count; + pcr_ops->write(cpuc->pcr); +} + +void hw_perf_disable(void) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + u64 val; + + if (!cpuc->enabled) + return; + + cpuc->enabled = 0; + cpuc->n_added = 0; + + val = cpuc->pcr; + val &= ~(PCR_UTRACE | PCR_STRACE | + sparc_pmu->hv_bit | sparc_pmu->irq_bit); + cpuc->pcr = val; + + pcr_ops->write(cpuc->pcr); } static void sparc_pmu_disable(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); struct hw_perf_event *hwc = &event->hw; - int idx = hwc->idx; + unsigned long flags; + int i; - clear_bit(idx, cpuc->active_mask); - sparc_pmu_disable_event(cpuc, hwc, idx); + local_irq_save(flags); + perf_disable(); + + for (i = 0; i < cpuc->n_events; i++) { + if (event == cpuc->event[i]) { + int idx = cpuc->current_idx[i]; + + /* Shift remaining entries down into + * the existing slot. + */ + while (++i < cpuc->n_events) { + cpuc->event[i - 1] = cpuc->event[i]; + cpuc->events[i - 1] = cpuc->events[i]; + cpuc->current_idx[i - 1] = + cpuc->current_idx[i]; + } + + /* Absorb the final count and turn off the + * event. + */ + sparc_pmu_disable_event(cpuc, hwc, idx); + barrier(); + sparc_perf_event_update(event, hwc, idx); - barrier(); + perf_event_update_userpage(event); - sparc_perf_event_update(event, hwc, idx); - cpuc->events[idx] = NULL; - clear_bit(idx, cpuc->used_mask); + cpuc->n_events--; + break; + } + } - perf_event_update_userpage(event); + perf_enable(); + local_irq_restore(flags); +} + +static int active_event_index(struct cpu_hw_events *cpuc, + struct perf_event *event) +{ + int i; + + for (i = 0; i < cpuc->n_events; i++) { + if (cpuc->event[i] == event) + break; + } + BUG_ON(i == cpuc->n_events); + return cpuc->current_idx[i]; } static void sparc_pmu_read(struct perf_event *event) { + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int idx = active_event_index(cpuc, event); struct hw_perf_event *hwc = &event->hw; - sparc_perf_event_update(event, hwc, hwc->idx); + sparc_perf_event_update(event, hwc, idx); } static void sparc_pmu_unthrottle(struct perf_event *event) { struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int idx = active_event_index(cpuc, event); struct hw_perf_event *hwc = &event->hw; - sparc_pmu_enable_event(cpuc, hwc, hwc->idx); + sparc_pmu_enable_event(cpuc, hwc, idx); } static atomic_t active_events = ATOMIC_INIT(0); @@ -750,43 +854,75 @@ static void hw_perf_event_destroy(struct perf_event *event) /* Make sure all events can be scheduled into the hardware at * the same time. This is simplified by the fact that we only * need to support 2 simultaneous HW events. + * + * As a side effect, the evts[]->hw.idx values will be assigned + * on success. These are pending indexes. When the events are + * actually programmed into the chip, these values will propagate + * to the per-cpu cpuc->current_idx[] slots, see the code in + * maybe_change_configuration() for details. */ -static int sparc_check_constraints(unsigned long *events, int n_ev) +static int sparc_check_constraints(struct perf_event **evts, + unsigned long *events, int n_ev) { - if (n_ev <= perf_max_events) { - u8 msk1, msk2; - u16 dummy; - - if (n_ev == 1) - return 0; - BUG_ON(n_ev != 2); - perf_event_decode(events[0], &dummy, &msk1); - perf_event_decode(events[1], &dummy, &msk2); - - /* If both events can go on any counter, OK. */ - if (msk1 == (PIC_UPPER | PIC_LOWER) && - msk2 == (PIC_UPPER | PIC_LOWER)) - return 0; - - /* If one event is limited to a specific counter, - * and the other can go on both, OK. - */ - if ((msk1 == PIC_UPPER || msk1 == PIC_LOWER) && - msk2 == (PIC_UPPER | PIC_LOWER)) - return 0; - if ((msk2 == PIC_UPPER || msk2 == PIC_LOWER) && - msk1 == (PIC_UPPER | PIC_LOWER)) - return 0; - - /* If the events are fixed to different counters, OK. */ - if ((msk1 == PIC_UPPER && msk2 == PIC_LOWER) || - (msk1 == PIC_LOWER && msk2 == PIC_UPPER)) - return 0; - - /* Otherwise, there is a conflict. */ + u8 msk0 = 0, msk1 = 0; + int idx0 = 0; + + /* This case is possible when we are invoked from + * hw_perf_group_sched_in(). + */ + if (!n_ev) + return 0; + + if (n_ev > perf_max_events) + return -1; + + msk0 = perf_event_get_msk(events[0]); + if (n_ev == 1) { + if (msk0 & PIC_LOWER) + idx0 = 1; + goto success; + } + BUG_ON(n_ev != 2); + msk1 = perf_event_get_msk(events[1]); + + /* If both events can go on any counter, OK. */ + if (msk0 == (PIC_UPPER | PIC_LOWER) && + msk1 == (PIC_UPPER | PIC_LOWER)) + goto success; + + /* If one event is limited to a specific counter, + * and the other can go on both, OK. + */ + if ((msk0 == PIC_UPPER || msk0 == PIC_LOWER) && + msk1 == (PIC_UPPER | PIC_LOWER)) { + if (msk0 & PIC_LOWER) + idx0 = 1; + goto success; } + if ((msk1 == PIC_UPPER || msk1 == PIC_LOWER) && + msk0 == (PIC_UPPER | PIC_LOWER)) { + if (msk1 & PIC_UPPER) + idx0 = 1; + goto success; + } + + /* If the events are fixed to different counters, OK. */ + if ((msk0 == PIC_UPPER && msk1 == PIC_LOWER) || + (msk0 == PIC_LOWER && msk1 == PIC_UPPER)) { + if (msk0 & PIC_LOWER) + idx0 = 1; + goto success; + } + + /* Otherwise, there is a conflict. */ return -1; + +success: + evts[0]->hw.idx = idx0; + if (n_ev == 2) + evts[1]->hw.idx = idx0 ^ 1; + return 0; } static int check_excludes(struct perf_event **evts, int n_prev, int n_new) @@ -818,7 +954,8 @@ static int check_excludes(struct perf_event **evts, int n_prev, int n_new) } static int collect_events(struct perf_event *group, int max_count, - struct perf_event *evts[], unsigned long *events) + struct perf_event *evts[], unsigned long *events, + int *current_idx) { struct perf_event *event; int n = 0; @@ -827,7 +964,8 @@ static int collect_events(struct perf_event *group, int max_count, if (n >= max_count) return -1; evts[n] = group; - events[n++] = group->hw.event_base; + events[n] = group->hw.event_base; + current_idx[n++] = PIC_NO_INDEX; } list_for_each_entry(event, &group->sibling_list, group_entry) { if (!is_software_event(event) && @@ -835,20 +973,100 @@ static int collect_events(struct perf_event *group, int max_count, if (n >= max_count) return -1; evts[n] = event; - events[n++] = event->hw.event_base; + events[n] = event->hw.event_base; + current_idx[n++] = PIC_NO_INDEX; } } return n; } +static void event_sched_in(struct perf_event *event, int cpu) +{ + event->state = PERF_EVENT_STATE_ACTIVE; + event->oncpu = cpu; + event->tstamp_running += event->ctx->time - event->tstamp_stopped; + if (is_software_event(event)) + event->pmu->enable(event); +} + +int hw_perf_group_sched_in(struct perf_event *group_leader, + struct perf_cpu_context *cpuctx, + struct perf_event_context *ctx, int cpu) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + struct perf_event *sub; + int n0, n; + + if (!sparc_pmu) + return 0; + + n0 = cpuc->n_events; + n = collect_events(group_leader, perf_max_events - n0, + &cpuc->event[n0], &cpuc->events[n0], + &cpuc->current_idx[n0]); + if (n < 0) + return -EAGAIN; + if (check_excludes(cpuc->event, n0, n)) + return -EINVAL; + if (sparc_check_constraints(cpuc->event, cpuc->events, n + n0)) + return -EAGAIN; + cpuc->n_events = n0 + n; + cpuc->n_added += n; + + cpuctx->active_oncpu += n; + n = 1; + event_sched_in(group_leader, cpu); + list_for_each_entry(sub, &group_leader->sibling_list, group_entry) { + if (sub->state != PERF_EVENT_STATE_OFF) { + event_sched_in(sub, cpu); + n++; + } + } + ctx->nr_active += n; + + return 1; +} + +static int sparc_pmu_enable(struct perf_event *event) +{ + struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events); + int n0, ret = -EAGAIN; + unsigned long flags; + + local_irq_save(flags); + perf_disable(); + + n0 = cpuc->n_events; + if (n0 >= perf_max_events) + goto out; + + cpuc->event[n0] = event; + cpuc->events[n0] = event->hw.event_base; + cpuc->current_idx[n0] = PIC_NO_INDEX; + + if (check_excludes(cpuc->event, n0, 1)) + goto out; + if (sparc_check_constraints(cpuc->event, cpuc->events, n0 + 1)) + goto out; + + cpuc->n_events++; + cpuc->n_added++; + + ret = 0; +out: + perf_enable(); + local_irq_restore(flags); + return ret; +} + static int __hw_perf_event_init(struct perf_event *event) { struct perf_event_attr *attr = &event->attr; struct perf_event *evts[MAX_HWEVENTS]; struct hw_perf_event *hwc = &event->hw; unsigned long events[MAX_HWEVENTS]; + int current_idx_dmy[MAX_HWEVENTS]; const struct perf_event_map *pmap; - u64 enc; int n; if (atomic_read(&nmi_active) < 0) @@ -865,10 +1083,7 @@ static int __hw_perf_event_init(struct perf_event *event) } else return -EOPNOTSUPP; - /* We save the enable bits in the config_base. So to - * turn off sampling just write 'config', and to enable - * things write 'config | config_base'. - */ + /* We save the enable bits in the config_base. */ hwc->config_base = sparc_pmu->irq_bit; if (!attr->exclude_user) hwc->config_base |= PCR_UTRACE; @@ -879,13 +1094,11 @@ static int __hw_perf_event_init(struct perf_event *event) hwc->event_base = perf_event_encode(pmap); - enc = pmap->encoding; - n = 0; if (event->group_leader != event) { n = collect_events(event->group_leader, perf_max_events - 1, - evts, events); + evts, events, current_idx_dmy); if (n < 0) return -EINVAL; } @@ -895,9 +1108,11 @@ static int __hw_perf_event_init(struct perf_event *event) if (check_excludes(evts, n, 1)) return -EINVAL; - if (sparc_check_constraints(events, n + 1)) + if (sparc_check_constraints(evts, events, n + 1)) return -EINVAL; + hwc->idx = PIC_NO_INDEX; + /* Try to do all error checking before this point, as unwinding * state after grabbing the PMC is difficult. */ @@ -910,15 +1125,6 @@ static int __hw_perf_event_init(struct perf_event *event) atomic64_set(&hwc->period_left, hwc->sample_period); } - if (pmap->pic_mask & PIC_UPPER) { - hwc->idx = PIC_UPPER_INDEX; - enc <<= sparc_pmu->upper_shift; - } else { - hwc->idx = PIC_LOWER_INDEX; - enc <<= sparc_pmu->lower_shift; - } - - hwc->config |= enc; return 0; } @@ -968,7 +1174,7 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, struct perf_sample_data data; struct cpu_hw_events *cpuc; struct pt_regs *regs; - int idx; + int i; if (!atomic_read(&active_events)) return NOTIFY_DONE; @@ -986,13 +1192,23 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, data.addr = 0; cpuc = &__get_cpu_var(cpu_hw_events); - for (idx = 0; idx < MAX_HWEVENTS; idx++) { - struct perf_event *event = cpuc->events[idx]; + + /* If the PMU has the TOE IRQ enable bits, we need to do a + * dummy write to the %pcr to clear the overflow bits and thus + * the interrupt. + * + * Do this before we peek at the counters to determine + * overflow so we don't lose any events. + */ + if (sparc_pmu->irq_bit) + pcr_ops->write(cpuc->pcr); + + for (i = 0; i < cpuc->n_events; i++) { + struct perf_event *event = cpuc->event[i]; + int idx = cpuc->current_idx[i]; struct hw_perf_event *hwc; u64 val; - if (!test_bit(idx, cpuc->active_mask)) - continue; hwc = &event->hw; val = sparc_perf_event_update(event, hwc, idx); if (val & (1ULL << 31)) @@ -1044,10 +1260,122 @@ void __init init_hw_perf_events(void) pr_cont("Supported PMU type is '%s'\n", sparc_pmu_type); - /* All sparc64 PMUs currently have 2 events. But this simple - * driver only supports one active event at a time. - */ - perf_max_events = 1; + /* All sparc64 PMUs currently have 2 events. */ + perf_max_events = 2; register_die_notifier(&perf_event_nmi_notifier); } + +static inline void callchain_store(struct perf_callchain_entry *entry, u64 ip) +{ + if (entry->nr < PERF_MAX_STACK_DEPTH) + entry->ip[entry->nr++] = ip; +} + +static void perf_callchain_kernel(struct pt_regs *regs, + struct perf_callchain_entry *entry) +{ + unsigned long ksp, fp; + + callchain_store(entry, PERF_CONTEXT_KERNEL); + callchain_store(entry, regs->tpc); + + ksp = regs->u_regs[UREG_I6]; + fp = ksp + STACK_BIAS; + do { + struct sparc_stackf *sf; + struct pt_regs *regs; + unsigned long pc; + + if (!kstack_valid(current_thread_info(), fp)) + break; + + sf = (struct sparc_stackf *) fp; + regs = (struct pt_regs *) (sf + 1); + + if (kstack_is_trap_frame(current_thread_info(), regs)) { + if (user_mode(regs)) + break; + pc = regs->tpc; + fp = regs->u_regs[UREG_I6] + STACK_BIAS; + } else { + pc = sf->callers_pc; + fp = (unsigned long)sf->fp + STACK_BIAS; + } + callchain_store(entry, pc); + } while (entry->nr < PERF_MAX_STACK_DEPTH); +} + +static void perf_callchain_user_64(struct pt_regs *regs, + struct perf_callchain_entry *entry) +{ + unsigned long ufp; + + callchain_store(entry, PERF_CONTEXT_USER); + callchain_store(entry, regs->tpc); + + ufp = regs->u_regs[UREG_I6] + STACK_BIAS; + do { + struct sparc_stackf *usf, sf; + unsigned long pc; + + usf = (struct sparc_stackf *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + + pc = sf.callers_pc; + ufp = (unsigned long)sf.fp + STACK_BIAS; + callchain_store(entry, pc); + } while (entry->nr < PERF_MAX_STACK_DEPTH); +} + +static void perf_callchain_user_32(struct pt_regs *regs, + struct perf_callchain_entry *entry) +{ + unsigned long ufp; + + callchain_store(entry, PERF_CONTEXT_USER); + callchain_store(entry, regs->tpc); + + ufp = regs->u_regs[UREG_I6]; + do { + struct sparc_stackf32 *usf, sf; + unsigned long pc; + + usf = (struct sparc_stackf32 *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + + pc = sf.callers_pc; + ufp = (unsigned long)sf.fp; + callchain_store(entry, pc); + } while (entry->nr < PERF_MAX_STACK_DEPTH); +} + +/* Like powerpc we can't get PMU interrupts within the PMU handler, + * so no need for seperate NMI and IRQ chains as on x86. + */ +static DEFINE_PER_CPU(struct perf_callchain_entry, callchain); + +struct perf_callchain_entry *perf_callchain(struct pt_regs *regs) +{ + struct perf_callchain_entry *entry = &__get_cpu_var(callchain); + + entry->nr = 0; + if (!user_mode(regs)) { + stack_trace_flush(); + perf_callchain_kernel(regs, entry); + if (current->mm) + regs = task_pt_regs(current); + else + regs = NULL; + } + if (regs) { + flushw_user(); + if (test_thread_flag(TIF_32BIT)) + perf_callchain_user_32(regs, entry); + else + perf_callchain_user_64(regs, entry); + } + return entry; +} diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 2830b415e214..c49865b30719 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -526,7 +526,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, * Set some valid stack frames to give to the child. */ childstack = (struct sparc_stackf __user *) - (sp & ~0x7UL); + (sp & ~0xfUL); parentstack = (struct sparc_stackf __user *) regs->u_regs[UREG_FP]; diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index 18d67854a1b8..cb70476bd8f5 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -365,14 +365,6 @@ void flush_thread(void) struct thread_info *t = current_thread_info(); struct mm_struct *mm; - if (test_ti_thread_flag(t, TIF_ABI_PENDING)) { - clear_ti_thread_flag(t, TIF_ABI_PENDING); - if (test_ti_thread_flag(t, TIF_32BIT)) - clear_ti_thread_flag(t, TIF_32BIT); - else - set_ti_thread_flag(t, TIF_32BIT); - } - mm = t->task->mm; if (mm) tsb_context_switch(mm); @@ -406,11 +398,11 @@ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp) } else __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6])); - /* Now 8-byte align the stack as this is mandatory in the - * Sparc ABI due to how register windows work. This hides - * the restriction from thread libraries etc. -DaveM + /* Now align the stack as this is mandatory in the Sparc ABI + * due to how register windows work. This hides the + * restriction from thread libraries etc. */ - csp &= ~7UL; + csp &= ~15UL; distance = fp - psp; rval = (csp - distance); diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c index 138910c67206..d80a65d9e893 100644 --- a/arch/sparc/kernel/prom_common.c +++ b/arch/sparc/kernel/prom_common.c @@ -79,6 +79,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len err = -ENODEV; + mutex_lock(&of_set_property_mutex); write_lock(&devtree_lock); prevp = &dp->properties; while (*prevp) { @@ -88,9 +89,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len void *old_val = prop->value; int ret; - mutex_lock(&of_set_property_mutex); ret = prom_setprop(dp->node, name, val, len); - mutex_unlock(&of_set_property_mutex); err = -EINVAL; if (ret >= 0) { @@ -109,6 +108,7 @@ int of_set_property(struct device_node *dp, const char *name, void *val, int len prevp = &(*prevp)->next; } write_unlock(&devtree_lock); + mutex_unlock(&of_set_property_mutex); /* XXX Upate procfs if necessary... */ diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 4ae91dc2feb9..2f6524d1a817 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -23,6 +23,7 @@ #include <linux/signal.h> #include <linux/regset.h> #include <linux/tracehook.h> +#include <trace/syscall.h> #include <linux/compat.h> #include <linux/elf.h> @@ -37,6 +38,9 @@ #include <asm/cpudata.h> #include <asm/cacheflush.h> +#define CREATE_TRACE_POINTS +#include <trace/events/syscalls.h> + #include "entry.h" /* #define ALLOW_INIT_TRACING */ @@ -1059,6 +1063,9 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) if (test_thread_flag(TIF_SYSCALL_TRACE)) ret = tracehook_report_syscall_entry(regs); + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) + trace_sys_enter(regs, regs->u_regs[UREG_G1]); + if (unlikely(current->audit_context) && !ret) audit_syscall_entry((test_thread_flag(TIF_32BIT) ? AUDIT_ARCH_SPARC : @@ -1084,6 +1091,9 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs) audit_syscall_exit(result, regs->u_regs[UREG_I0]); } + if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) + trace_sys_exit(regs, regs->u_regs[UREG_G1]); + if (test_thread_flag(TIF_SYSCALL_TRACE)) tracehook_report_syscall_exit(regs, 0); } diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 21180339cb09..a2a79e76344f 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -46,6 +46,7 @@ #include <asm/setup.h> #include <asm/mmu.h> #include <asm/ns87303.h> +#include <asm/btext.h> #ifdef CONFIG_IP_PNP #include <net/ipconfig.h> @@ -286,7 +287,10 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); boot_flags_init(*cmdline_p); - register_console(&prom_early_console); +#ifdef CONFIG_EARLYFB + if (btext_find_display()) +#endif + register_console(&prom_early_console); if (tlb_type == hypervisor) printk("ARCH: SUN4V\n"); diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index ba5b09ad6666..ea22cd373c64 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -120,8 +120,8 @@ struct rt_signal_frame32 { }; /* Align macros */ -#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 7) & (~7))) -#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 7) & (~7))) +#define SF_ALIGNEDSZ (((sizeof(struct signal_frame32) + 15) & (~15))) +#define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 15) & (~15))) int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) { @@ -420,15 +420,17 @@ static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, uns sp = current->sas_ss_sp + current->sas_ss_size; } + sp -= framesize; + /* Always align the stack frame. This handles two cases. First, * sigaltstack need not be mindful of platform specific stack * alignment. Second, if we took this signal because the stack * is not aligned properly, we'd like to take the signal cleanly * and report that. */ - sp &= ~7UL; + sp &= ~15UL; - return (void __user *)(sp - framesize); + return (void __user *) sp; } static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu) diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c index 7ce1a1005b1d..9882df92ba0a 100644 --- a/arch/sparc/kernel/signal_32.c +++ b/arch/sparc/kernel/signal_32.c @@ -267,15 +267,17 @@ static inline void __user *get_sigframe(struct sigaction *sa, struct pt_regs *re sp = current->sas_ss_sp + current->sas_ss_size; } + sp -= framesize; + /* Always align the stack frame. This handles two cases. First, * sigaltstack need not be mindful of platform specific stack * alignment. Second, if we took this signal because the stack * is not aligned properly, we'd like to take the signal cleanly * and report that. */ - sp &= ~7UL; + sp &= ~15UL; - return (void __user *)(sp - framesize); + return (void __user *) sp; } static inline int diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c index 647afbda7ae1..9fa48c30037e 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -353,7 +353,7 @@ segv: /* Checks if the fp is valid */ static int invalid_frame_pointer(void __user *fp, int fplen) { - if (((unsigned long) fp) & 7) + if (((unsigned long) fp) & 15) return 1; return 0; } @@ -396,15 +396,17 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs * sp = current->sas_ss_sp + current->sas_ss_size; } + sp -= framesize; + /* Always align the stack frame. This handles two cases. First, * sigaltstack need not be mindful of platform specific stack * alignment. Second, if we took this signal because the stack * is not aligned properly, we'd like to take the signal cleanly * and report that. */ - sp &= ~7UL; + sp &= ~15UL; - return (void __user *)(sp - framesize); + return (void __user *) sp; } static inline void diff --git a/arch/sparc/kernel/smp_32.c b/arch/sparc/kernel/smp_32.c index 132d81fb2616..91c10fb70858 100644 --- a/arch/sparc/kernel/smp_32.c +++ b/arch/sparc/kernel/smp_32.c @@ -32,6 +32,7 @@ #include <asm/cacheflush.h> #include <asm/tlbflush.h> #include <asm/cpudata.h> +#include <asm/leon.h> #include "irq.h" @@ -96,6 +97,9 @@ void __init smp_cpus_done(unsigned int max_cpus) case sun4d: smp4d_smp_done(); break; + case sparc_leon: + leon_smp_done(); + break; case sun4e: printk("SUN4E\n"); BUG(); @@ -306,6 +310,9 @@ void __init smp_prepare_cpus(unsigned int max_cpus) case sun4d: smp4d_boot_cpus(); break; + case sparc_leon: + leon_boot_cpus(); + break; case sun4e: printk("SUN4E\n"); BUG(); @@ -376,6 +383,9 @@ int __cpuinit __cpu_up(unsigned int cpu) case sun4d: ret = smp4d_boot_one_cpu(cpu); break; + case sparc_leon: + ret = leon_boot_one_cpu(cpu); + break; case sun4e: printk("SUN4E\n"); BUG(); diff --git a/arch/sparc/kernel/sparc_ksyms_64.c b/arch/sparc/kernel/sparc_ksyms_64.c index 0f26066a08d9..372ad59c4cba 100644 --- a/arch/sparc/kernel/sparc_ksyms_64.c +++ b/arch/sparc/kernel/sparc_ksyms_64.c @@ -38,17 +38,5 @@ EXPORT_SYMBOL(sun4v_niagara_setperf); EXPORT_SYMBOL(sun4v_niagara2_getperf); EXPORT_SYMBOL(sun4v_niagara2_setperf); -#ifdef CONFIG_PCI -/* inline functions in asm/pci_64.h */ -EXPORT_SYMBOL(pci_alloc_consistent); -EXPORT_SYMBOL(pci_free_consistent); -EXPORT_SYMBOL(pci_map_single); -EXPORT_SYMBOL(pci_unmap_single); -EXPORT_SYMBOL(pci_map_sg); -EXPORT_SYMBOL(pci_unmap_sg); -EXPORT_SYMBOL(pci_dma_sync_single_for_cpu); -EXPORT_SYMBOL(pci_dma_sync_sg_for_cpu); -#endif - /* Exporting a symbol from /init/main.c */ EXPORT_SYMBOL(saved_command_line); diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 04e28b2671c8..dc0ac197e7e2 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -26,11 +26,6 @@ #include <linux/nfs_fs.h> #include <linux/quota.h> #include <linux/module.h> -#include <linux/sunrpc/svc.h> -#include <linux/nfsd/nfsd.h> -#include <linux/nfsd/cache.h> -#include <linux/nfsd/xdr.h> -#include <linux/nfsd/syscall.h> #include <linux/poll.h> #include <linux/personality.h> #include <linux/stat.h> @@ -569,85 +564,6 @@ asmlinkage long sparc32_open(const char __user *filename, return do_sys_open(AT_FDCWD, filename, flags, mode); } -extern unsigned long do_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr); - -asmlinkage unsigned long sys32_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, u32 __new_addr) -{ - unsigned long ret = -EINVAL; - unsigned long new_addr = __new_addr; - - if (unlikely(sparc_mmap_check(addr, old_len))) - goto out; - if (unlikely(sparc_mmap_check(new_addr, new_len))) - goto out; - down_write(¤t->mm->mmap_sem); - ret = do_mremap(addr, old_len, new_len, flags, new_addr); - up_write(¤t->mm->mmap_sem); -out: - return ret; -} - -struct __sysctl_args32 { - u32 name; - int nlen; - u32 oldval; - u32 oldlenp; - u32 newval; - u32 newlen; - u32 __unused[4]; -}; - -asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) -{ -#ifndef CONFIG_SYSCTL_SYSCALL - return -ENOSYS; -#else - struct __sysctl_args32 tmp; - int error; - size_t oldlen, __user *oldlenp = NULL; - unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; - - if (copy_from_user(&tmp, args, sizeof(tmp))) - return -EFAULT; - - if (tmp.oldval && tmp.oldlenp) { - /* Duh, this is ugly and might not work if sysctl_args - is in read-only memory, but do_sysctl does indirectly - a lot of uaccess in both directions and we'd have to - basically copy the whole sysctl.c here, and - glibc's __sysctl uses rw memory for the structure - anyway. */ - if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || - put_user(oldlen, (size_t __user *)addr)) - return -EFAULT; - oldlenp = (size_t __user *)addr; - } - - lock_kernel(); - error = do_sysctl((int __user *)(unsigned long) tmp.name, - tmp.nlen, - (void __user *)(unsigned long) tmp.oldval, - oldlenp, - (void __user *)(unsigned long) tmp.newval, - tmp.newlen); - unlock_kernel(); - if (oldlenp) { - if (!error) { - if (get_user(oldlen, (size_t __user *)addr) || - put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) - error = -EFAULT; - } - if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) - error = -EFAULT; - } - return error; -#endif -} - long sys32_lookup_dcookie(unsigned long cookie_high, unsigned long cookie_low, char __user *buf, size_t len) diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 03035c852a43..3a82e65d8db2 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -45,7 +45,8 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi /* We do not accept a shared mapping if it would violate * cache aliasing constraints. */ - if ((flags & MAP_SHARED) && (addr & (SHMLBA - 1))) + if ((flags & MAP_SHARED) && + ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) return -EINVAL; return addr; } @@ -79,15 +80,6 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi } } -asmlinkage unsigned long sparc_brk(unsigned long brk) -{ - if(ARCH_SUN4C) { - if ((brk & 0xe0000000) != (current->mm->brk & 0xe0000000)) - return current->mm->brk; - } - return sys_brk(brk); -} - /* * sys_pipe() is the normal C calling standard for creating * a pipe. It's not the way unix traditionally does this, though. @@ -234,31 +226,6 @@ int sparc_mmap_check(unsigned long addr, unsigned long len) } /* Linux version of mmap */ -static unsigned long do_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, unsigned long fd, - unsigned long pgoff) -{ - struct file * file = NULL; - unsigned long retval = -EBADF; - - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - - len = PAGE_ALIGN(len); - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - - down_write(¤t->mm->mmap_sem); - retval = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); - up_write(¤t->mm->mmap_sem); - - if (file) - fput(file); -out: - return retval; -} asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, @@ -266,14 +233,16 @@ asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len, { /* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE we have. */ - return do_mmap2(addr, len, prot, flags, fd, pgoff >> (PAGE_SHIFT - 12)); + return sys_mmap_pgoff(addr, len, prot, flags, fd, + pgoff >> (PAGE_SHIFT - 12)); } asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long off) { - return do_mmap2(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + /* no alignment check? */ + return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); } long sparc_remap_file_pages(unsigned long start, unsigned long size, @@ -287,27 +256,6 @@ long sparc_remap_file_pages(unsigned long start, unsigned long size, (pgoff >> (PAGE_SHIFT - 12)), flags); } -extern unsigned long do_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr); - -asmlinkage unsigned long sparc_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr) -{ - unsigned long ret = -EINVAL; - - if (unlikely(sparc_mmap_check(addr, old_len))) - goto out; - if (unlikely(sparc_mmap_check(new_addr, new_len))) - goto out; - down_write(¤t->mm->mmap_sem); - ret = do_mremap(addr, old_len, new_len, flags, new_addr); - up_write(¤t->mm->mmap_sem); -out: - return ret; -} - /* we come to here via sys_nis_syscall so it can setup the regs argument */ asmlinkage unsigned long c_sys_nis_syscall (struct pt_regs *regs) diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index e2d102447a43..d77f54316948 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -317,10 +317,14 @@ bottomup: unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags) { unsigned long align_goal, addr = -ENOMEM; + unsigned long (*get_area)(struct file *, unsigned long, + unsigned long, unsigned long, unsigned long); + + get_area = current->mm->get_unmapped_area; if (flags & MAP_FIXED) { /* Ok, don't mess with it. */ - return get_unmapped_area(NULL, orig_addr, len, pgoff, flags); + return get_area(NULL, orig_addr, len, pgoff, flags); } flags &= ~MAP_SHARED; @@ -333,7 +337,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u align_goal = (64UL * 1024); do { - addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags); + addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags); if (!(addr & ~PAGE_MASK)) { addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL); break; @@ -351,7 +355,7 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u * be obtained. */ if (addr & ~PAGE_MASK) - addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags); + addr = get_area(NULL, orig_addr, len, pgoff, flags); return addr; } @@ -361,6 +365,7 @@ EXPORT_SYMBOL(get_fb_unmapped_area); void arch_pick_mmap_layout(struct mm_struct *mm) { unsigned long random_factor = 0UL; + unsigned long gap; if (current->flags & PF_RANDOMIZE) { random_factor = get_random_int(); @@ -375,9 +380,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm) * Fall back to the standard layout if the personality * bit is set, or if the expected stack growth is unlimited: */ + gap = rlimit(RLIMIT_STACK); if (!test_thread_flag(TIF_32BIT) || (current->personality & ADDR_COMPAT_LAYOUT) || - current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY || + gap == RLIM_INFINITY || sysctl_legacy_va_layout) { mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; mm->get_unmapped_area = arch_get_unmapped_area; @@ -385,9 +391,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm) } else { /* We know it's 32-bit */ unsigned long task_size = STACK_TOP32; - unsigned long gap; - gap = current->signal->rlim[RLIMIT_STACK].rlim_cur; if (gap < 128 * 1024 * 1024) gap = 128 * 1024 * 1024; if (gap > (task_size / 6 * 5)) @@ -399,18 +403,6 @@ void arch_pick_mmap_layout(struct mm_struct *mm) } } -SYSCALL_DEFINE1(sparc_brk, unsigned long, brk) -{ - /* People could try to be nasty and use ta 0x6d in 32bit programs */ - if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32) - return current->mm->brk; - - if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk))) - return current->mm->brk; - - return sys_brk(brk); -} - /* * sys_pipe() is the normal C calling standard for creating * a pipe. It's not the way unix traditionally does this, though. @@ -568,23 +560,13 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, unsigned long, fd, unsigned long, off) { - struct file * file = NULL; - unsigned long retval = -EBADF; - - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - len = PAGE_ALIGN(len); + unsigned long retval = -EINVAL; - down_write(¤t->mm->mmap_sem); - retval = do_mmap(file, addr, len, prot, flags, off); - up_write(¤t->mm->mmap_sem); - - if (file) - fput(file); + if ((off + PAGE_ALIGN(len)) < off) + goto out; + if (off & ~PAGE_MASK) + goto out; + retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); out: return retval; } @@ -614,12 +596,6 @@ SYSCALL_DEFINE5(64_mremap, unsigned long, addr, unsigned long, old_len, if (test_thread_flag(TIF_32BIT)) goto out; - if (unlikely(new_len >= VA_EXCLUDE_START)) - goto out; - if (unlikely(sparc_mmap_check(addr, old_len))) - goto out; - if (unlikely(sparc_mmap_check(new_addr, new_len))) - goto out; down_write(¤t->mm->mmap_sem); ret = do_mremap(addr, old_len, new_len, flags, new_addr); diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index d150c2aa98d2..dc4a458f74dc 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -62,7 +62,7 @@ sys32_rt_sigreturn: #endif .align 32 1: ldx [%g6 + TI_FLAGS], %l5 - andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 be,pt %icc, rtrap nop call syscall_trace_leave @@ -187,7 +187,7 @@ linux_syscall_trace: .globl linux_sparc_syscall32 linux_sparc_syscall32: /* Direct access to user regs, much faster. */ - cmp %g1, NR_SYSCALLS ! IEU1 Group + cmp %g1, NR_syscalls ! IEU1 Group bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI srl %i0, 0, %o0 ! IEU0 sll %g1, 2, %l4 ! IEU0 Group @@ -198,7 +198,7 @@ linux_sparc_syscall32: srl %i5, 0, %o5 ! IEU1 srl %i2, 0, %o2 ! IEU0 Group - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 bne,pn %icc, linux_syscall_trace32 ! CTI mov %i0, %l5 ! IEU1 call %l7 ! CTI Group brk forced @@ -210,7 +210,7 @@ linux_sparc_syscall32: .globl linux_sparc_syscall linux_sparc_syscall: /* Direct access to user regs, much faster. */ - cmp %g1, NR_SYSCALLS ! IEU1 Group + cmp %g1, NR_syscalls ! IEU1 Group bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI mov %i0, %o0 ! IEU0 sll %g1, 2, %l4 ! IEU0 Group @@ -221,7 +221,7 @@ linux_sparc_syscall: mov %i3, %o3 ! IEU1 mov %i4, %o4 ! IEU0 Group - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 bne,pn %icc, linux_syscall_trace ! CTI Group mov %i0, %l5 ! IEU0 2: call %l7 ! CTI Group brk forced @@ -245,7 +245,7 @@ ret_sys_call: cmp %o0, -ERESTART_RESTARTBLOCK bgeu,pn %xcc, 1f - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 80: /* System call success, clear Carry condition code. */ andn %g3, %g2, %g3 @@ -260,7 +260,7 @@ ret_sys_call: /* System call failure, set Carry condition code. * Also, get abs(errno) to return to the process. */ - andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6 + andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6 sub %g0, %o0, %o0 or %g3, %g2, %g3 stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] diff --git a/arch/sparc/kernel/systbls.h b/arch/sparc/kernel/systbls.h index a63c5d2d9849..d2f999ae2b85 100644 --- a/arch/sparc/kernel/systbls.h +++ b/arch/sparc/kernel/systbls.h @@ -9,7 +9,6 @@ struct new_utsname; extern asmlinkage unsigned long sys_getpagesize(void); -extern asmlinkage unsigned long sparc_brk(unsigned long brk); extern asmlinkage long sparc_pipe(struct pt_regs *regs); extern asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 0f1658d37490..801fc8e5a0e8 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -19,7 +19,7 @@ sys_call_table: /*0*/ .long sys_restart_syscall, sys_exit, sys_fork, sys_read, sys_write /*5*/ .long sys_open, sys_close, sys_wait4, sys_creat, sys_link /*10*/ .long sys_unlink, sunos_execv, sys_chdir, sys_chown16, sys_mknod -/*15*/ .long sys_chmod, sys_lchown16, sparc_brk, sys_nis_syscall, sys_lseek +/*15*/ .long sys_chmod, sys_lchown16, sys_brk, sys_nis_syscall, sys_lseek /*20*/ .long sys_getpid, sys_capget, sys_capset, sys_setuid16, sys_getuid16 /*25*/ .long sys_vmsplice, sys_ptrace, sys_alarm, sys_sigaltstack, sys_pause /*30*/ .long sys_utime, sys_lchown, sys_fchown, sys_access, sys_nice @@ -67,7 +67,7 @@ sys_call_table: /*235*/ .long sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall /*240*/ .long sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler /*245*/ .long sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep -/*250*/ .long sparc_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl +/*250*/ .long sys_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl /*255*/ .long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep /*260*/ .long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun /*265*/ .long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy @@ -82,5 +82,5 @@ sys_call_table: /*310*/ .long sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate /*315*/ .long sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv -/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open +/*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 009825f6e73c..e575b46bd7a9 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -21,7 +21,7 @@ sys_call_table32: /*0*/ .word sys_restart_syscall, sys32_exit, sys_fork, sys_read, sys_write /*5*/ .word sys32_open, sys_close, sys32_wait4, sys32_creat, sys_link /*10*/ .word sys_unlink, sunos_execv, sys_chdir, sys_chown16, sys32_mknod -/*15*/ .word sys_chmod, sys_lchown16, sys_sparc_brk, sys32_perfctr, sys32_lseek +/*15*/ .word sys_chmod, sys_lchown16, sys_brk, sys32_perfctr, sys32_lseek /*20*/ .word sys_getpid, sys_capget, sys_capset, sys_setuid16, sys_getuid16 /*25*/ .word sys32_vmsplice, compat_sys_ptrace, sys_alarm, sys32_sigaltstack, sys_pause /*30*/ .word compat_sys_utime, sys_lchown, sys_fchown, sys32_access, sys32_nice @@ -68,7 +68,7 @@ sys_call_table32: .word compat_sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys32_mlockall /*240*/ .word sys_munlockall, sys32_sched_setparam, sys32_sched_getparam, sys32_sched_setscheduler, sys32_sched_getscheduler .word sys_sched_yield, sys32_sched_get_priority_max, sys32_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep -/*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl +/*250*/ .word sys_mremap, compat_sys_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep /*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy @@ -83,7 +83,7 @@ sys_call_table32: /*310*/ .word compat_sys_utimensat, compat_sys_signalfd, sys_timerfd_create, sys_eventfd, compat_sys_fallocate .word compat_sys_timerfd_settime, compat_sys_timerfd_gettime, compat_sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv - .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open + .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg #endif /* CONFIG_COMPAT */ @@ -96,7 +96,7 @@ sys_call_table: /*0*/ .word sys_restart_syscall, sparc_exit, sys_fork, sys_read, sys_write /*5*/ .word sys_open, sys_close, sys_wait4, sys_creat, sys_link /*10*/ .word sys_unlink, sys_nis_syscall, sys_chdir, sys_chown, sys_mknod -/*15*/ .word sys_chmod, sys_lchown, sys_sparc_brk, sys_perfctr, sys_lseek +/*15*/ .word sys_chmod, sys_lchown, sys_brk, sys_perfctr, sys_lseek /*20*/ .word sys_getpid, sys_capget, sys_capset, sys_setuid, sys_getuid /*25*/ .word sys_vmsplice, sys_ptrace, sys_alarm, sys_sigaltstack, sys_nis_syscall /*30*/ .word sys_utime, sys_nis_syscall, sys_nis_syscall, sys_access, sys_nice @@ -158,4 +158,4 @@ sys_call_table: /*310*/ .word sys_utimensat, sys_signalfd, sys_timerfd_create, sys_eventfd, sys_fallocate .word sys_timerfd_settime, sys_timerfd_gettime, sys_signalfd4, sys_eventfd2, sys_epoll_create1 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv - .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open + .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c index 614ac7b4a9dd..0d4c09b15efc 100644 --- a/arch/sparc/kernel/time_32.c +++ b/arch/sparc/kernel/time_32.c @@ -35,6 +35,7 @@ #include <linux/platform_device.h> #include <asm/oplib.h> +#include <asm/timex.h> #include <asm/timer.h> #include <asm/system.h> #include <asm/irq.h> @@ -51,7 +52,6 @@ DEFINE_SPINLOCK(rtc_lock); EXPORT_SYMBOL(rtc_lock); static int set_rtc_mmss(unsigned long); -static int sbus_do_settimeofday(struct timespec *tv); unsigned long profile_pc(struct pt_regs *regs) { @@ -76,6 +76,8 @@ EXPORT_SYMBOL(profile_pc); __volatile__ unsigned int *master_l10_counter; +u32 (*do_arch_gettimeoffset)(void); + /* * timer_interrupt() needs to keep up the real-time clock, * as well as call the "do_timer()" routine every clocktick @@ -196,38 +198,14 @@ static int __init clock_init(void) { return of_register_driver(&clock_driver, &of_platform_bus_type); } - /* Must be after subsys_initcall() so that busses are probed. Must * be before device_initcall() because things like the RTC driver * need to see the clock registers. */ fs_initcall(clock_init); -static void __init sbus_time_init(void) -{ - - BTFIXUPSET_CALL(bus_do_settimeofday, sbus_do_settimeofday, BTFIXUPCALL_NORM); - btfixup(); - - sparc_init_timers(timer_interrupt); - - /* Now that OBP ticker has been silenced, it is safe to enable IRQ. */ - local_irq_enable(); -} - -void __init time_init(void) -{ -#ifdef CONFIG_PCI - extern void pci_time_init(void); - if (pcic_present()) { - pci_time_init(); - return; - } -#endif - sbus_time_init(); -} -static inline unsigned long do_gettimeoffset(void) +u32 sbus_do_gettimeoffset(void) { unsigned long val = *master_l10_counter; unsigned long usec = (val >> 10) & 0x1fffff; @@ -236,86 +214,39 @@ static inline unsigned long do_gettimeoffset(void) if (val & 0x80000000) usec += 1000000 / HZ; - return usec; + return usec * 1000; } -/* Ok, my cute asm atomicity trick doesn't work anymore. - * There are just too many variables that need to be protected - * now (both members of xtime, et al.) - */ -void do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - unsigned long seq; - unsigned long usec, sec; - unsigned long max_ntp_tick = tick_usec - tickadj; - - do { - seq = read_seqbegin_irqsave(&xtime_lock, flags); - usec = do_gettimeoffset(); - - /* - * If time_adjust is negative then NTP is slowing the clock - * so make sure not to go into next possible interval. - * Better to lose some accuracy than have time go backwards.. - */ - if (unlikely(time_adjust < 0)) - usec = min(usec, max_ntp_tick); - - sec = xtime.tv_sec; - usec += (xtime.tv_nsec / 1000); - } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); - - while (usec >= 1000000) { - usec -= 1000000; - sec++; - } - tv->tv_sec = sec; - tv->tv_usec = usec; -} - -EXPORT_SYMBOL(do_gettimeofday); - -int do_settimeofday(struct timespec *tv) +u32 arch_gettimeoffset(void) { - int ret; - - write_seqlock_irq(&xtime_lock); - ret = bus_do_settimeofday(tv); - write_sequnlock_irq(&xtime_lock); - clock_was_set(); - return ret; + if (unlikely(!do_arch_gettimeoffset)) + return 0; + return do_arch_gettimeoffset(); } -EXPORT_SYMBOL(do_settimeofday); - -static int sbus_do_settimeofday(struct timespec *tv) +static void __init sbus_time_init(void) { - time_t wtm_sec, sec = tv->tv_sec; - long wtm_nsec, nsec = tv->tv_nsec; + do_arch_gettimeoffset = sbus_do_gettimeoffset; - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) - return -EINVAL; - - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * made, and then undo it! - */ - nsec -= 1000 * do_gettimeoffset(); - - wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec); - wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec); + btfixup(); - set_normalized_timespec(&xtime, sec, nsec); - set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec); + sparc_init_timers(timer_interrupt); +} - ntp_clear(); - return 0; +void __init time_init(void) +{ +#ifdef CONFIG_PCI + extern void pci_time_init(void); + if (pcic_present()) { + pci_time_init(); + return; + } +#endif + sbus_time_init(); } + static int set_rtc_mmss(unsigned long secs) { struct rtc_device *rtc = rtc_class_open("rtc0"); diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c index da1218e8ee87..67e165102885 100644 --- a/arch/sparc/kernel/time_64.c +++ b/arch/sparc/kernel/time_64.c @@ -774,26 +774,9 @@ void __devinit setup_sparc64_timer(void) static struct clocksource clocksource_tick = { .rating = 100, .mask = CLOCKSOURCE_MASK(64), - .shift = 16, .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static void __init setup_clockevent_multiplier(unsigned long hz) -{ - unsigned long mult, shift = 32; - - while (1) { - mult = div_sc(hz, NSEC_PER_SEC, shift); - if (mult && (mult >> 32UL) == 0UL) - break; - - shift--; - } - - sparc64_clockevent.shift = shift; - sparc64_clockevent.mult = mult; -} - static unsigned long tb_ticks_per_usec __read_mostly; void __delay(unsigned long loops) @@ -828,9 +811,7 @@ void __init time_init(void) clocksource_hz2mult(freq, SPARC64_NSEC_PER_CYC_SHIFT); clocksource_tick.name = tick_ops->name; - clocksource_tick.mult = - clocksource_hz2mult(freq, - clocksource_tick.shift); + clocksource_calc_mult_shift(&clocksource_tick, freq, 4); clocksource_tick.read = clocksource_tick_read; printk("clocksource: mult[%x] shift[%d]\n", @@ -839,15 +820,14 @@ void __init time_init(void) clocksource_register(&clocksource_tick); sparc64_clockevent.name = tick_ops->name; - - setup_clockevent_multiplier(freq); + clockevents_calc_mult_shift(&sparc64_clockevent, freq, 4); sparc64_clockevent.max_delta_ns = clockevent_delta2ns(0x7fffffffffffffffUL, &sparc64_clockevent); sparc64_clockevent.min_delta_ns = clockevent_delta2ns(0xF, &sparc64_clockevent); - printk("clockevent: mult[%lx] shift[%d]\n", + printk("clockevent: mult[%x] shift[%d]\n", sparc64_clockevent.mult, sparc64_clockevent.shift); setup_sparc64_timer(); diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S index 5e235c52d667..691f484e03b3 100644 --- a/arch/sparc/kernel/trampoline_32.S +++ b/arch/sparc/kernel/trampoline_32.S @@ -15,7 +15,7 @@ #include <asm/contregs.h> #include <asm/thread_info.h> - .globl sun4m_cpu_startup, __smp4m_processor_id + .globl sun4m_cpu_startup, __smp4m_processor_id, __leon_processor_id .globl sun4d_cpu_startup, __smp4d_processor_id __CPUINIT @@ -106,6 +106,12 @@ __smp4d_processor_id: retl mov %g1, %o7 +__leon_processor_id: + rd %asr17,%g2 + srl %g2,28,%g2 + retl + mov %g1, %o7 + /* CPUID in bootbus can be found at PA 0xff0140000 */ #define SUN4D_BOOTBUS_CPUID 0xf0140000 @@ -160,3 +166,64 @@ sun4d_cpu_startup: nop b,a smp_do_cpu_idle + +#ifdef CONFIG_SPARC_LEON + + __CPUINIT + .align 4 + .global leon_smp_cpu_startup, smp_penguin_ctable + +leon_smp_cpu_startup: + + set smp_penguin_ctable,%g1 + ld [%g1+4],%g1 + srl %g1,4,%g1 + set 0x00000100,%g5 /* SRMMU_CTXTBL_PTR */ + sta %g1, [%g5] ASI_M_MMUREGS + + /* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */ + set (PSR_PIL | PSR_S | PSR_PS), %g1 + wr %g1, 0x0, %psr ! traps off though + WRITE_PAUSE + + /* Our %wim is one behind CWP */ + mov 2, %g1 + wr %g1, 0x0, %wim + WRITE_PAUSE + + /* Set tbr - we use just one trap table. */ + set trapbase, %g1 + wr %g1, 0x0, %tbr + WRITE_PAUSE + + /* Get our CPU id */ + rd %asr17,%g3 + + /* Give ourselves a stack and curptr. */ + set current_set, %g5 + srl %g3, 28, %g4 + sll %g4, 2, %g4 + ld [%g5 + %g4], %g6 + + sethi %hi(THREAD_SIZE - STACKFRAME_SZ), %sp + or %sp, %lo(THREAD_SIZE - STACKFRAME_SZ), %sp + add %g6, %sp, %sp + + /* Turn on traps (PSR_ET). */ + rd %psr, %g1 + wr %g1, PSR_ET, %psr ! traps on + WRITE_PAUSE + + /* Init our caches, etc. */ + set poke_srmmu, %g5 + ld [%g5], %g5 + call %g5 + nop + + /* Start this processor. */ + call leon_callin + nop + + b,a smp_do_cpu_idle + +#endif diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c index 6b1e6cde6fff..f8514e291e15 100644 --- a/arch/sparc/kernel/unaligned_32.c +++ b/arch/sparc/kernel/unaligned_32.c @@ -17,8 +17,7 @@ #include <asm/uaccess.h> #include <linux/smp.h> #include <linux/smp_lock.h> - -/* #define DEBUG_MNA */ +#include <linux/perf_event.h> enum direction { load, /* ld, ldd, ldh, ldsh */ @@ -29,12 +28,6 @@ enum direction { invalid, }; -#ifdef DEBUG_MNA -static char *dirstrings[] = { - "load", "store", "both", "fpload", "fpstore", "invalid" -}; -#endif - static inline enum direction decode_direction(unsigned int insn) { unsigned long tmp = (insn >> 21) & 1; @@ -255,10 +248,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn) unsigned long addr = compute_effective_address(regs, insn); int err; -#ifdef DEBUG_MNA - printk("KMNA: pc=%08lx [dir=%s addr=%08lx size=%d] retpc[%08lx]\n", - regs->pc, dirstrings[dir], addr, size, regs->u_regs[UREG_RETPC]); -#endif + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr); switch (dir) { case load: err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f), @@ -350,6 +340,7 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn) } addr = compute_effective_address(regs, insn); + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr); switch(dir) { case load: err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f), diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c index 379209982a07..378ca82b9ccc 100644 --- a/arch/sparc/kernel/unaligned_64.c +++ b/arch/sparc/kernel/unaligned_64.c @@ -20,10 +20,9 @@ #include <asm/uaccess.h> #include <linux/smp.h> #include <linux/bitops.h> +#include <linux/perf_event.h> #include <asm/fpumacro.h> -/* #define DEBUG_MNA */ - enum direction { load, /* ld, ldd, ldh, ldsh */ store, /* st, std, sth, stsh */ @@ -33,12 +32,6 @@ enum direction { invalid, }; -#ifdef DEBUG_MNA -static char *dirstrings[] = { - "load", "store", "both", "fpload", "fpstore", "invalid" -}; -#endif - static inline enum direction decode_direction(unsigned int insn) { unsigned long tmp = (insn >> 21) & 1; @@ -327,12 +320,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn) addr = compute_effective_address(regs, insn, ((insn >> 25) & 0x1f)); -#ifdef DEBUG_MNA - printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] " - "retpc[%016lx]\n", - regs->tpc, dirstrings[dir], addr, size, - regs->u_regs[UREG_RETPC]); -#endif + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr); switch (asi) { case ASI_NL: case ASI_AIUPL: @@ -399,6 +387,7 @@ int handle_popc(u32 insn, struct pt_regs *regs) int ret, i, rd = ((insn >> 25) & 0x1f); int from_kernel = (regs->tstate & TSTATE_PRIV) != 0; + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0); if (insn & 0x2000) { maybe_flush_windows(0, 0, rd, from_kernel); value = sign_extend_imm13(insn); @@ -445,6 +434,8 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs) int asi = decode_asi(insn, regs); int flag = (freg < 32) ? FPRS_DL : FPRS_DU; + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0); + save_and_clear_fpu(); current_thread_info()->xfsr[0] &= ~0x1c000; if (freg & 3) { @@ -566,6 +557,8 @@ void handle_ld_nf(u32 insn, struct pt_regs *regs) int from_kernel = (regs->tstate & TSTATE_PRIV) != 0; unsigned long *reg; + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0); + maybe_flush_windows(0, 0, rd, from_kernel); reg = fetch_reg_addr(rd, regs); if (from_kernel || rd < 16) { @@ -596,6 +589,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr if (tstate & TSTATE_PRIV) die_if_kernel("lddfmna from kernel", regs); + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar); if (test_thread_flag(TIF_32BIT)) pc = (u32)pc; if (get_user(insn, (u32 __user *) pc) != -EFAULT) { @@ -657,6 +651,7 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr if (tstate & TSTATE_PRIV) die_if_kernel("stdfmna from kernel", regs); + perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar); if (test_thread_flag(TIF_32BIT)) pc = (u32)pc; if (get_user(insn, (u32 __user *) pc) != -EFAULT) { diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c index b956fd71c131..9dfd2ebcb157 100644 --- a/arch/sparc/kernel/visemul.c +++ b/arch/sparc/kernel/visemul.c @@ -5,6 +5,7 @@ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/thread_info.h> +#include <linux/perf_event.h> #include <asm/ptrace.h> #include <asm/pstate.h> @@ -617,7 +618,7 @@ static void pmul(struct pt_regs *regs, unsigned int insn, unsigned int opf) rs2 = fps_regval(f, RS2(insn)); rd_val = 0; - src2 = (rs2 >> (opf == FMUL8x16AU_OPF) ? 16 : 0); + src2 = rs2 >> (opf == FMUL8x16AU_OPF ? 16 : 0); for (byte = 0; byte < 4; byte++) { u16 src1 = (rs1 >> (byte * 8)) & 0x00ff; u32 prod = src1 * src2; @@ -801,6 +802,8 @@ int vis_emul(struct pt_regs *regs, unsigned int insn) BUG_ON(regs->tstate & TSTATE_PRIV); + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0); + if (test_thread_flag(TIF_32BIT)) pc = (u32)pc; |