diff options
Diffstat (limited to 'arch/mips/kernel')
38 files changed, 589 insertions, 1128 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 6bfbbed0897..bbbb8d7cb89 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -45,7 +45,6 @@ obj-$(CONFIG_MIPS_APSP_KSPD) += kspd.o obj-$(CONFIG_MIPS_VPE_LOADER) += vpe.o obj-$(CONFIG_MIPS_VPE_APSP_API) += rtlx.o -obj-$(CONFIG_NO_ISA) += dma-no-isa.o obj-$(CONFIG_I8259) += i8259.o obj-$(CONFIG_IRQ_CPU) += irq_cpu.o obj-$(CONFIG_IRQ_CPU_RM7K) += irq-rm7000.o @@ -67,6 +66,8 @@ obj-$(CONFIG_64BIT) += cpu-bugs64.o obj-$(CONFIG_I8253) += i8253.o +obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o + CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi) EXTRA_AFLAGS := $(CFLAGS) diff --git a/arch/mips/kernel/apm.c b/arch/mips/kernel/apm.c index 528e731049c..ba16d07588c 100644 --- a/arch/mips/kernel/apm.c +++ b/arch/mips/kernel/apm.c @@ -356,7 +356,7 @@ static int apm_open(struct inode * inode, struct file * filp) { struct apm_user *as; - as = (struct apm_user *)kzalloc(sizeof(*as), GFP_KERNEL); + as = kzalloc(sizeof(*as), GFP_KERNEL); if (as) { /* * XXX - this is a tiny bit broken, when we consider BSD diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c index 4a9f1ecefaf..9b34238d41c 100644 --- a/arch/mips/kernel/binfmt_elfn32.c +++ b/arch/mips/kernel/binfmt_elfn32.c @@ -90,7 +90,6 @@ struct elf_prpsinfo32 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ }; -#define elf_addr_t u32 #define elf_caddr_t u32 #define init_elf_binfmt init_elfn32_binfmt diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index e3181377989..993f7ec70f3 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -92,7 +92,6 @@ struct elf_prpsinfo32 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ }; -#define elf_addr_t u32 #define elf_caddr_t u32 #define init_elf_binfmt init_elf32_binfmt diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 8485af340ee..442839e9578 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -110,9 +110,8 @@ static inline void check_wait(void) { struct cpuinfo_mips *c = ¤t_cpu_data; - printk("Checking for 'wait' instruction... "); if (nowait) { - printk (" disabled.\n"); + printk("Wait instruction disabled.\n"); return; } @@ -120,11 +119,9 @@ static inline void check_wait(void) case CPU_R3081: case CPU_R3081E: cpu_wait = r3081_wait; - printk(" available.\n"); break; case CPU_TX3927: cpu_wait = r39xx_wait; - printk(" available.\n"); break; case CPU_R4200: /* case CPU_R4300: */ @@ -146,33 +143,23 @@ static inline void check_wait(void) case CPU_74K: case CPU_PR4450: cpu_wait = r4k_wait; - printk(" available.\n"); break; case CPU_TX49XX: cpu_wait = r4k_wait_irqoff; - printk(" available.\n"); break; case CPU_AU1000: case CPU_AU1100: case CPU_AU1500: case CPU_AU1550: case CPU_AU1200: - if (allow_au1k_wait) { + if (allow_au1k_wait) cpu_wait = au1k_wait; - printk(" available.\n"); - } else - printk(" unavailable.\n"); break; case CPU_RM9000: - if ((c->processor_id & 0x00ff) >= 0x40) { + if ((c->processor_id & 0x00ff) >= 0x40) cpu_wait = r4k_wait; - printk(" available.\n"); - } else { - printk(" unavailable.\n"); - } break; default: - printk(" unavailable.\n"); break; } } diff --git a/arch/mips/kernel/dma-no-isa.c b/arch/mips/kernel/dma-no-isa.c deleted file mode 100644 index 6df8b07741e..00000000000 --- a/arch/mips/kernel/dma-no-isa.c +++ /dev/null @@ -1,28 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004 by Ralf Baechle - * - * Dummy ISA DMA functions for systems that don't have ISA but share drivers - * with ISA such as legacy free PCI. - */ -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/spinlock.h> - -DEFINE_SPINLOCK(dma_spin_lock); - -int request_dma(unsigned int dmanr, const char * device_id) -{ - return -EINVAL; -} - -void free_dma(unsigned int dmanr) -{ -} - -EXPORT_SYMBOL(dma_spin_lock); -EXPORT_SYMBOL(request_dma); -EXPORT_SYMBOL(free_dma); diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index 5baca16993d..aacd4a005c5 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -19,6 +19,7 @@ #include <asm/mipsregs.h> #include <asm/stackframe.h> #include <asm/war.h> +#include <asm/page.h> #define PANIC_PIC(msg) \ .set push; \ @@ -378,6 +379,68 @@ NESTED(nmi_handler, PT_SIZE, sp) BUILD_HANDLER dsp dsp sti silent /* #26 */ BUILD_HANDLER reserved reserved sti verbose /* others */ + .align 5 + LEAF(handle_ri_rdhwr_vivt) +#ifdef CONFIG_MIPS_MT_SMTC + PANIC_PIC("handle_ri_rdhwr_vivt called") +#else + .set push + .set noat + .set noreorder + /* check if TLB contains a entry for EPC */ + MFC0 k1, CP0_ENTRYHI + andi k1, 0xff /* ASID_MASK */ + MFC0 k0, CP0_EPC + PTR_SRL k0, PAGE_SHIFT + 1 + PTR_SLL k0, PAGE_SHIFT + 1 + or k1, k0 + MTC0 k1, CP0_ENTRYHI + mtc0_tlbw_hazard + tlbp + tlb_probe_hazard + mfc0 k1, CP0_INDEX + .set pop + bltz k1, handle_ri /* slow path */ + /* fall thru */ +#endif + END(handle_ri_rdhwr_vivt) + + LEAF(handle_ri_rdhwr) + .set push + .set noat + .set noreorder + /* 0x7c03e83b: rdhwr v1,$29 */ + MFC0 k1, CP0_EPC + lui k0, 0x7c03 + lw k1, (k1) + ori k0, 0xe83b + .set reorder + bne k0, k1, handle_ri /* if not ours */ + /* The insn is rdhwr. No need to check CAUSE.BD here. */ + get_saved_sp /* k1 := current_thread_info */ + .set noreorder + MFC0 k0, CP0_EPC +#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) + ori k1, _THREAD_MASK + xori k1, _THREAD_MASK + LONG_L v1, TI_TP_VALUE(k1) + LONG_ADDIU k0, 4 + jr k0 + rfe +#else + LONG_ADDIU k0, 4 /* stall on $k0 */ + MTC0 k0, CP0_EPC + /* I hope three instructions between MTC0 and ERET are enough... */ + ori k1, _THREAD_MASK + xori k1, _THREAD_MASK + LONG_L v1, TI_TP_VALUE(k1) + .set mips3 + eret + .set mips0 +#endif + .set pop + END(handle_ri_rdhwr) + #ifdef CONFIG_64BIT /* A temporary overflow handler used by check_daddi(). */ diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S index ddc1b71c937..9a7811d13db 100644 --- a/arch/mips/kernel/head.S +++ b/arch/mips/kernel/head.S @@ -138,7 +138,7 @@ EXPORT(stext) # used for profiling EXPORT(_stext) -#if defined(CONFIG_QEMU) || defined(CONFIG_MIPS_SIM) +#ifdef CONFIG_MIPS_SIM /* * Give us a fighting chance of running if execution beings at the * kernel load address. This is needed because this platform does @@ -250,6 +250,9 @@ NESTED(smp_bootstrap, 16, sp) */ page swapper_pg_dir, _PGD_ORDER #ifdef CONFIG_64BIT +#if defined(CONFIG_MODULES) && !defined(CONFIG_BUILD_ELF64) + page module_pg_dir, _PGD_ORDER +#endif page invalid_pmd_table, _PMD_ORDER #endif page invalid_pte_table, _PTE_ORDER diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c index 48e3418c217..b59a676c6d0 100644 --- a/arch/mips/kernel/i8259.c +++ b/arch/mips/kernel/i8259.c @@ -19,9 +19,6 @@ #include <asm/i8259.h> #include <asm/io.h> -void enable_8259A_irq(unsigned int irq); -void disable_8259A_irq(unsigned int irq); - /* * This is the 'legacy' 8259A Programmable Interrupt Controller, * present in the majority of PC/AT boxes. @@ -31,34 +28,16 @@ void disable_8259A_irq(unsigned int irq); * moves to arch independent land */ +static int i8259A_auto_eoi; DEFINE_SPINLOCK(i8259A_lock); - -static void end_8259A_irq (unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)) && - irq_desc[irq].action) - enable_8259A_irq(irq); -} - -#define shutdown_8259A_irq disable_8259A_irq - +/* some platforms call this... */ void mask_and_ack_8259A(unsigned int); -static unsigned int startup_8259A_irq(unsigned int irq) -{ - enable_8259A_irq(irq); - - return 0; /* never anything pending */ -} - -static struct irq_chip i8259A_irq_type = { - .typename = "XT-PIC", - .startup = startup_8259A_irq, - .shutdown = shutdown_8259A_irq, - .enable = enable_8259A_irq, - .disable = disable_8259A_irq, - .ack = mask_and_ack_8259A, - .end = end_8259A_irq, +static struct irq_chip i8259A_chip = { + .name = "XT-PIC", + .mask = disable_8259A_irq, + .unmask = enable_8259A_irq, + .mask_ack = mask_and_ack_8259A, }; /* @@ -70,8 +49,8 @@ static struct irq_chip i8259A_irq_type = { */ static unsigned int cached_irq_mask = 0xffff; -#define cached_21 (cached_irq_mask) -#define cached_A1 (cached_irq_mask >> 8) +#define cached_master_mask (cached_irq_mask) +#define cached_slave_mask (cached_irq_mask >> 8) void disable_8259A_irq(unsigned int irq) { @@ -81,9 +60,9 @@ void disable_8259A_irq(unsigned int irq) spin_lock_irqsave(&i8259A_lock, flags); cached_irq_mask |= mask; if (irq & 8) - outb(cached_A1,0xA1); + outb(cached_slave_mask, PIC_SLAVE_IMR); else - outb(cached_21,0x21); + outb(cached_master_mask, PIC_MASTER_IMR); spin_unlock_irqrestore(&i8259A_lock, flags); } @@ -95,9 +74,9 @@ void enable_8259A_irq(unsigned int irq) spin_lock_irqsave(&i8259A_lock, flags); cached_irq_mask &= mask; if (irq & 8) - outb(cached_A1,0xA1); + outb(cached_slave_mask, PIC_SLAVE_IMR); else - outb(cached_21,0x21); + outb(cached_master_mask, PIC_MASTER_IMR); spin_unlock_irqrestore(&i8259A_lock, flags); } @@ -109,9 +88,9 @@ int i8259A_irq_pending(unsigned int irq) spin_lock_irqsave(&i8259A_lock, flags); if (irq < 8) - ret = inb(0x20) & mask; + ret = inb(PIC_MASTER_CMD) & mask; else - ret = inb(0xA0) & (mask >> 8); + ret = inb(PIC_SLAVE_CMD) & (mask >> 8); spin_unlock_irqrestore(&i8259A_lock, flags); return ret; @@ -120,7 +99,7 @@ int i8259A_irq_pending(unsigned int irq) void make_8259A_irq(unsigned int irq) { disable_irq_nosync(irq); - irq_desc[irq].chip = &i8259A_irq_type; + set_irq_chip_and_handler(irq, &i8259A_chip, handle_level_irq); enable_irq(irq); } @@ -136,14 +115,14 @@ static inline int i8259A_irq_real(unsigned int irq) int irqmask = 1 << irq; if (irq < 8) { - outb(0x0B,0x20); /* ISR register */ - value = inb(0x20) & irqmask; - outb(0x0A,0x20); /* back to the IRR register */ + outb(0x0B,PIC_MASTER_CMD); /* ISR register */ + value = inb(PIC_MASTER_CMD) & irqmask; + outb(0x0A,PIC_MASTER_CMD); /* back to the IRR register */ return value; } - outb(0x0B,0xA0); /* ISR register */ - value = inb(0xA0) & (irqmask >> 8); - outb(0x0A,0xA0); /* back to the IRR register */ + outb(0x0B,PIC_SLAVE_CMD); /* ISR register */ + value = inb(PIC_SLAVE_CMD) & (irqmask >> 8); + outb(0x0A,PIC_SLAVE_CMD); /* back to the IRR register */ return value; } @@ -160,17 +139,19 @@ void mask_and_ack_8259A(unsigned int irq) spin_lock_irqsave(&i8259A_lock, flags); /* - * Lightweight spurious IRQ detection. We do not want to overdo - * spurious IRQ handling - it's usually a sign of hardware problems, so - * we only do the checks we can do without slowing down good hardware - * nnecesserily. + * Lightweight spurious IRQ detection. We do not want + * to overdo spurious IRQ handling - it's usually a sign + * of hardware problems, so we only do the checks we can + * do without slowing down good hardware unnecessarily. * - * Note that IRQ7 and IRQ15 (the two spurious IRQs usually resulting - * rom the 8259A-1|2 PICs) occur even if the IRQ is masked in the 8259A. - * Thus we can check spurious 8259A IRQs without doing the quite slow - * i8259A_irq_real() call for every IRQ. This does not cover 100% of - * spurious interrupts, but should be enough to warn the user that - * there is something bad going on ... + * Note that IRQ7 and IRQ15 (the two spurious IRQs + * usually resulting from the 8259A-1|2 PICs) occur + * even if the IRQ is masked in the 8259A. Thus we + * can check spurious 8259A IRQs without doing the + * quite slow i8259A_irq_real() call for every IRQ. + * This does not cover 100% of spurious interrupts, + * but should be enough to warn the user that there + * is something bad going on ... */ if (cached_irq_mask & irqmask) goto spurious_8259A_irq; @@ -178,14 +159,14 @@ void mask_and_ack_8259A(unsigned int irq) handle_real_irq: if (irq & 8) { - inb(0xA1); /* DUMMY - (do we need this?) */ - outb(cached_A1,0xA1); - outb(0x60+(irq&7),0xA0);/* 'Specific EOI' to slave */ - outb(0x62,0x20); /* 'Specific EOI' to master-IRQ2 */ + inb(PIC_SLAVE_IMR); /* DUMMY - (do we need this?) */ + outb(cached_slave_mask, PIC_SLAVE_IMR); + outb(0x60+(irq&7),PIC_SLAVE_CMD);/* 'Specific EOI' to slave */ + outb(0x60+PIC_CASCADE_IR,PIC_MASTER_CMD); /* 'Specific EOI' to master-IRQ2 */ } else { - inb(0x21); /* DUMMY - (do we need this?) */ - outb(cached_21,0x21); - outb(0x60+irq,0x20); /* 'Specific EOI' to master */ + inb(PIC_MASTER_IMR); /* DUMMY - (do we need this?) */ + outb(cached_master_mask, PIC_MASTER_IMR); + outb(0x60+irq,PIC_MASTER_CMD); /* 'Specific EOI to master */ } #ifdef CONFIG_MIPS_MT_SMTC if (irq_hwmask[irq] & ST0_IM) @@ -206,7 +187,7 @@ spurious_8259A_irq: goto handle_real_irq; { - static int spurious_irq_mask = 0; + static int spurious_irq_mask; /* * At this point we can be sure the IRQ is spurious, * lets ACK and report it. [once per IRQ] @@ -227,13 +208,25 @@ spurious_8259A_irq: static int i8259A_resume(struct sys_device *dev) { - init_8259A(0); + init_8259A(i8259A_auto_eoi); + return 0; +} + +static int i8259A_shutdown(struct sys_device *dev) +{ + /* Put the i8259A into a quiescent state that + * the kernel initialization code can get it + * out of. + */ + outb(0xff, PIC_MASTER_IMR); /* mask all of 8259A-1 */ + outb(0xff, PIC_SLAVE_IMR); /* mask all of 8259A-1 */ return 0; } static struct sysdev_class i8259_sysdev_class = { set_kset_name("i8259"), .resume = i8259A_resume, + .shutdown = i8259A_shutdown, }; static struct sys_device device_i8259A = { @@ -255,41 +248,41 @@ void __init init_8259A(int auto_eoi) { unsigned long flags; + i8259A_auto_eoi = auto_eoi; + spin_lock_irqsave(&i8259A_lock, flags); - outb(0xff, 0x21); /* mask all of 8259A-1 */ - outb(0xff, 0xA1); /* mask all of 8259A-2 */ + outb(0xff, PIC_MASTER_IMR); /* mask all of 8259A-1 */ + outb(0xff, PIC_SLAVE_IMR); /* mask all of 8259A-2 */ /* * outb_p - this has to work on a wide range of PC hardware. */ - outb_p(0x11, 0x20); /* ICW1: select 8259A-1 init */ - outb_p(0x00, 0x21); /* ICW2: 8259A-1 IR0-7 mapped to 0x00-0x07 */ - outb_p(0x04, 0x21); /* 8259A-1 (the master) has a slave on IR2 */ - if (auto_eoi) - outb_p(0x03, 0x21); /* master does Auto EOI */ - else - outb_p(0x01, 0x21); /* master expects normal EOI */ - - outb_p(0x11, 0xA0); /* ICW1: select 8259A-2 init */ - outb_p(0x08, 0xA1); /* ICW2: 8259A-2 IR0-7 mapped to 0x08-0x0f */ - outb_p(0x02, 0xA1); /* 8259A-2 is a slave on master's IR2 */ - outb_p(0x01, 0xA1); /* (slave's support for AEOI in flat mode - is to be investigated) */ - + outb_p(0x11, PIC_MASTER_CMD); /* ICW1: select 8259A-1 init */ + outb_p(I8259A_IRQ_BASE + 0, PIC_MASTER_IMR); /* ICW2: 8259A-1 IR0 mapped to I8259A_IRQ_BASE + 0x00 */ + outb_p(1U << PIC_CASCADE_IR, PIC_MASTER_IMR); /* 8259A-1 (the master) has a slave on IR2 */ + if (auto_eoi) /* master does Auto EOI */ + outb_p(MASTER_ICW4_DEFAULT | PIC_ICW4_AEOI, PIC_MASTER_IMR); + else /* master expects normal EOI */ + outb_p(MASTER_ICW4_DEFAULT, PIC_MASTER_IMR); + + outb_p(0x11, PIC_SLAVE_CMD); /* ICW1: select 8259A-2 init */ + outb_p(I8259A_IRQ_BASE + 8, PIC_SLAVE_IMR); /* ICW2: 8259A-2 IR0 mapped to I8259A_IRQ_BASE + 0x08 */ + outb_p(PIC_CASCADE_IR, PIC_SLAVE_IMR); /* 8259A-2 is a slave on master's IR2 */ + outb_p(SLAVE_ICW4_DEFAULT, PIC_SLAVE_IMR); /* (slave's support for AEOI in flat mode is to be investigated) */ if (auto_eoi) /* - * in AEOI mode we just have to mask the interrupt + * In AEOI mode we just have to mask the interrupt * when acking. */ - i8259A_irq_type.ack = disable_8259A_irq; + i8259A_chip.mask_ack = disable_8259A_irq; else - i8259A_irq_type.ack = mask_and_ack_8259A; + i8259A_chip.mask_ack = mask_and_ack_8259A; udelay(100); /* wait for 8259A to initialize */ - outb(cached_21, 0x21); /* restore master IRQ mask */ - outb(cached_A1, 0xA1); /* restore slave IRQ mask */ + outb(cached_master_mask, PIC_MASTER_IMR); /* restore master IRQ mask */ + outb(cached_slave_mask, PIC_SLAVE_IMR); /* restore slave IRQ mask */ spin_unlock_irqrestore(&i8259A_lock, flags); } @@ -302,11 +295,17 @@ static struct irqaction irq2 = { }; static struct resource pic1_io_resource = { - .name = "pic1", .start = 0x20, .end = 0x21, .flags = IORESOURCE_BUSY + .name = "pic1", + .start = PIC_MASTER_CMD, + .end = PIC_MASTER_IMR, + .flags = IORESOURCE_BUSY }; static struct resource pic2_io_resource = { - .name = "pic2", .start = 0xa0, .end = 0xa1, .flags = IORESOURCE_BUSY + .name = "pic2", + .start = PIC_SLAVE_CMD, + .end = PIC_SLAVE_IMR, + .flags = IORESOURCE_BUSY }; /* @@ -323,12 +322,8 @@ void __init init_i8259_irqs (void) init_8259A(0); - for (i = 0; i < 16; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &i8259A_irq_type; - } + for (i = 0; i < 16; i++) + set_irq_chip_and_handler(i, &i8259A_chip, handle_level_irq); - setup_irq(2, &irq2); + setup_irq(PIC_CASCADE_IR, &irq2); } diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c index ab12c8f0151..37cad5de515 100644 --- a/arch/mips/kernel/irixelf.c +++ b/arch/mips/kernel/irixelf.c @@ -52,10 +52,6 @@ static struct linux_binfmt irix_format = { irix_core_dump, PAGE_SIZE }; -#ifndef elf_addr_t -#define elf_addr_t unsigned long -#endif - #ifdef DEBUG /* Debugging routines. */ static char *get_elf_p_type(Elf32_Word p_type) @@ -1013,7 +1009,7 @@ static int notesize(struct memelfnote *en) int sz; sz = sizeof(struct elf_note); - sz += roundup(strlen(en->name), 4); + sz += roundup(strlen(en->name) + 1, 4); sz += roundup(en->datasz, 4); return sz; @@ -1032,7 +1028,7 @@ static int writenote(struct memelfnote *men, struct file *file) { struct elf_note en; - en.n_namesz = strlen(men->name); + en.n_namesz = strlen(men->name) + 1; en.n_descsz = men->datasz; en.n_type = men->type; @@ -1149,7 +1145,7 @@ static int irix_core_dump(long signr, struct pt_regs * regs, struct file *file) psinfo.pr_pid = prstatus.pr_pid = current->pid; psinfo.pr_ppid = prstatus.pr_ppid = current->parent->pid; psinfo.pr_pgrp = prstatus.pr_pgrp = process_group(current); - psinfo.pr_sid = prstatus.pr_sid = current->signal->session; + psinfo.pr_sid = prstatus.pr_sid = process_session(current); if (current->pid == current->tgid) { /* * This is the record for the group leader. Add in the diff --git a/arch/mips/kernel/irq-msc01.c b/arch/mips/kernel/irq-msc01.c index 650a80ca374..bcaad669608 100644 --- a/arch/mips/kernel/irq-msc01.c +++ b/arch/mips/kernel/irq-msc01.c @@ -45,31 +45,6 @@ static inline void unmask_msc_irq(unsigned int irq) } /* - * Enables the IRQ on SOC-it - */ -static void enable_msc_irq(unsigned int irq) -{ - unmask_msc_irq(irq); -} - -/* - * Initialize the IRQ on SOC-it - */ -static unsigned int startup_msc_irq(unsigned int irq) -{ - unmask_msc_irq(irq); - return 0; -} - -/* - * Disables the IRQ on SOC-it - */ -static void disable_msc_irq(unsigned int irq) -{ - mask_msc_irq(irq); -} - -/* * Masks and ACKs an IRQ */ static void level_mask_and_ack_msc_irq(unsigned int irq) @@ -136,25 +111,23 @@ msc_bind_eic_interrupt (unsigned int irq, unsigned int set) (irq<<MSC01_IC_RAMW_ADDR_SHF) | (set<<MSC01_IC_RAMW_DATA_SHF)); } -#define shutdown_msc_irq disable_msc_irq - struct irq_chip msc_levelirq_type = { .typename = "SOC-it-Level", - .startup = startup_msc_irq, - .shutdown = shutdown_msc_irq, - .enable = enable_msc_irq, - .disable = disable_msc_irq, .ack = level_mask_and_ack_msc_irq, + .mask = mask_msc_irq, + .mask_ack = level_mask_and_ack_msc_irq, + .unmask = unmask_msc_irq, + .eoi = unmask_msc_irq, .end = end_msc_irq, }; struct irq_chip msc_edgeirq_type = { .typename = "SOC-it-Edge", - .startup =startup_msc_irq, - .shutdown = shutdown_msc_irq, - .enable = enable_msc_irq, - .disable = disable_msc_irq, .ack = edge_mask_and_ack_msc_irq, + .mask = mask_msc_irq, + .mask_ack = edge_mask_and_ack_msc_irq, + .unmask = unmask_msc_irq, + .eoi = unmask_msc_irq, .end = end_msc_irq, }; @@ -175,14 +148,14 @@ void __init init_msc_irqs(unsigned int base, msc_irqmap_t *imp, int nirq) switch (imp->im_type) { case MSC01_IRQ_EDGE: - irq_desc[base+n].chip = &msc_edgeirq_type; + set_irq_chip(base+n, &msc_edgeirq_type); if (cpu_has_veic) MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT); else MSCIC_WRITE(MSC01_IC_SUP+n*8, MSC01_IC_SUP_EDGE_BIT | imp->im_lvl); break; case MSC01_IRQ_LEVEL: - irq_desc[base+n].chip = &msc_levelirq_type; + set_irq_chip(base+n, &msc_levelirq_type); if (cpu_has_veic) MSCIC_WRITE(MSC01_IC_SUP+n*8, 0); else diff --git a/arch/mips/kernel/irq-mv6434x.c b/arch/mips/kernel/irq-mv6434x.c index 37d106202b8..efbd219845b 100644 --- a/arch/mips/kernel/irq-mv6434x.c +++ b/arch/mips/kernel/irq-mv6434x.c @@ -67,48 +67,6 @@ static inline void unmask_mv64340_irq(unsigned int irq) } /* - * Enables the IRQ on Marvell Chip - */ -static void enable_mv64340_irq(unsigned int irq) -{ - unmask_mv64340_irq(irq); -} - -/* - * Initialize the IRQ on Marvell Chip - */ -static unsigned int startup_mv64340_irq(unsigned int irq) -{ - unmask_mv64340_irq(irq); - return 0; -} - -/* - * Disables the IRQ on Marvell Chip - */ -static void disable_mv64340_irq(unsigned int irq) -{ - mask_mv64340_irq(irq); -} - -/* - * Masks and ACKs an IRQ - */ -static void mask_and_ack_mv64340_irq(unsigned int irq) -{ - mask_mv64340_irq(irq); -} - -/* - * End IRQ processing - */ -static void end_mv64340_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) - unmask_mv64340_irq(irq); -} - -/* * Interrupt handler for interrupts coming from the Marvell chip. * It could be built in ethernet ports etc... */ @@ -133,29 +91,21 @@ void ll_mv64340_irq(void) do_IRQ(ls1bit32(irq_src_high) + irq_base + 32); } -#define shutdown_mv64340_irq disable_mv64340_irq - struct irq_chip mv64340_irq_type = { .typename = "MV-64340", - .startup = startup_mv64340_irq, - .shutdown = shutdown_mv64340_irq, - .enable = enable_mv64340_irq, - .disable = disable_mv64340_irq, - .ack = mask_and_ack_mv64340_irq, - .end = end_mv64340_irq, + .ack = mask_mv64340_irq, + .mask = mask_mv64340_irq, + .mask_ack = mask_mv64340_irq, + .unmask = unmask_mv64340_irq, }; void __init mv64340_irq_init(unsigned int base) { int i; - /* Reset irq handlers pointers to NULL */ - for (i = base; i < base + 64; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = 0; - irq_desc[i].depth = 2; - irq_desc[i].chip = &mv64340_irq_type; - } + for (i = base; i < base + 64; i++) + set_irq_chip_and_handler(i, &mv64340_irq_type, + handle_level_irq); irq_base = base; } diff --git a/arch/mips/kernel/irq-rm7000.c b/arch/mips/kernel/irq-rm7000.c index 6b54c7109e2..123324ba8c1 100644 --- a/arch/mips/kernel/irq-rm7000.c +++ b/arch/mips/kernel/irq-rm7000.c @@ -29,56 +29,12 @@ static inline void mask_rm7k_irq(unsigned int irq) clear_c0_intcontrol(0x100 << (irq - irq_base)); } -static inline void rm7k_cpu_irq_enable(unsigned int irq) -{ - unsigned long flags; - - local_irq_save(flags); - unmask_rm7k_irq(irq); - local_irq_restore(flags); -} - -static void rm7k_cpu_irq_disable(unsigned int irq) -{ - unsigned long flags; - - local_irq_save(flags); - mask_rm7k_irq(irq); - local_irq_restore(flags); -} - -static unsigned int rm7k_cpu_irq_startup(unsigned int irq) -{ - rm7k_cpu_irq_enable(irq); - - return 0; -} - -#define rm7k_cpu_irq_shutdown rm7k_cpu_irq_disable - -/* - * While we ack the interrupt interrupts are disabled and thus we don't need - * to deal with concurrency issues. Same for rm7k_cpu_irq_end. - */ -static void rm7k_cpu_irq_ack(unsigned int irq) -{ - mask_rm7k_irq(irq); -} - -static void rm7k_cpu_irq_end(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - unmask_rm7k_irq(irq); -} - static struct irq_chip rm7k_irq_controller = { .typename = "RM7000", - .startup = rm7k_cpu_irq_startup, - .shutdown = rm7k_cpu_irq_shutdown, - .enable = rm7k_cpu_irq_enable, - .disable = rm7k_cpu_irq_disable, - .ack = rm7k_cpu_irq_ack, - .end = rm7k_cpu_irq_end, + .ack = mask_rm7k_irq, + .mask = mask_rm7k_irq, + .mask_ack = mask_rm7k_irq, + .unmask = unmask_rm7k_irq, }; void __init rm7k_cpu_irq_init(int base) @@ -87,12 +43,9 @@ void __init rm7k_cpu_irq_init(int base) clear_c0_intcontrol(0x00000f00); /* Mask all */ - for (i = base; i < base + 4; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &rm7k_irq_controller; - } + for (i = base; i < base + 4; i++) + set_irq_chip_and_handler(i, &rm7k_irq_controller, + handle_level_irq); irq_base = base; } diff --git a/arch/mips/kernel/irq-rm9000.c b/arch/mips/kernel/irq-rm9000.c index 62f011ba97a..0e6f4c5349d 100644 --- a/arch/mips/kernel/irq-rm9000.c +++ b/arch/mips/kernel/irq-rm9000.c @@ -48,15 +48,6 @@ static void rm9k_cpu_irq_disable(unsigned int irq) local_irq_restore(flags); } -static unsigned int rm9k_cpu_irq_startup(unsigned int irq) -{ - rm9k_cpu_irq_enable(irq); - - return 0; -} - -#define rm9k_cpu_irq_shutdown rm9k_cpu_irq_disable - /* * Performance counter interrupts are global on all processors. */ @@ -89,40 +80,22 @@ static void rm9k_perfcounter_irq_shutdown(unsigned int irq) on_each_cpu(local_rm9k_perfcounter_irq_shutdown, (void *) irq, 0, 1); } - -/* - * While we ack the interrupt interrupts are disabled and thus we don't need - * to deal with concurrency issues. Same for rm9k_cpu_irq_end. - */ -static void rm9k_cpu_irq_ack(unsigned int irq) -{ - mask_rm9k_irq(irq); -} - -static void rm9k_cpu_irq_end(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - unmask_rm9k_irq(irq); -} - static struct irq_chip rm9k_irq_controller = { .typename = "RM9000", - .startup = rm9k_cpu_irq_startup, - .shutdown = rm9k_cpu_irq_shutdown, - .enable = rm9k_cpu_irq_enable, - .disable = rm9k_cpu_irq_disable, - .ack = rm9k_cpu_irq_ack, - .end = rm9k_cpu_irq_end, + .ack = mask_rm9k_irq, + .mask = mask_rm9k_irq, + .mask_ack = mask_rm9k_irq, + .unmask = unmask_rm9k_irq, }; static struct irq_chip rm9k_perfcounter_irq = { .typename = "RM9000", .startup = rm9k_perfcounter_irq_startup, .shutdown = rm9k_perfcounter_irq_shutdown, - .enable = rm9k_cpu_irq_enable, - .disable = rm9k_cpu_irq_disable, - .ack = rm9k_cpu_irq_ack, - .end = rm9k_cpu_irq_end, + .ack = mask_rm9k_irq, + .mask = mask_rm9k_irq, + .mask_ack = mask_rm9k_irq, + .unmask = unmask_rm9k_irq, }; unsigned int rm9000_perfcount_irq; @@ -135,15 +108,13 @@ void __init rm9k_cpu_irq_init(int base) clear_c0_intcontrol(0x0000f000); /* Mask all */ - for (i = base; i < base + 4; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &rm9k_irq_controller; - } + for (i = base; i < base + 4; i++) + set_irq_chip_and_handler(i, &rm9k_irq_controller, + handle_level_irq); rm9000_perfcount_irq = base + 1; - irq_desc[rm9000_perfcount_irq].chip = &rm9k_perfcounter_irq; + set_irq_chip_and_handler(rm9000_perfcount_irq, &rm9k_perfcounter_irq, + handle_level_irq); irq_base = base; } diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index 9b0e49d63d7..2fe4c868a80 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -88,25 +88,6 @@ atomic_t irq_err_count; unsigned long irq_hwmask[NR_IRQS]; #endif /* CONFIG_MIPS_MT_SMTC */ -#undef do_IRQ - -/* - * do_IRQ handles all normal device IRQ's (the special - * SMP cross-CPU interrupts have their own specific - * handlers). - */ -asmlinkage unsigned int do_IRQ(unsigned int irq) -{ - irq_enter(); - - __DO_IRQ_SMTC_HOOK(); - __do_IRQ(irq); - - irq_exit(); - - return 1; -} - /* * Generic, controller-independent functions: */ @@ -136,7 +117,7 @@ int show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); #endif - seq_printf(p, " %14s", irq_desc[i].chip->typename); + seq_printf(p, " %14s", irq_desc[i].chip->name); seq_printf(p, " %s", action->name); for (action=action->next; action; action = action->next) @@ -172,19 +153,6 @@ __setup("nokgdb", nokgdb); void __init init_IRQ(void) { - int i; - - for (i = 0; i < NR_IRQS; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &no_irq_chip; - spin_lock_init(&irq_desc[i].lock); -#ifdef CONFIG_MIPS_MT_SMTC - irq_hwmask[i] = 0; -#endif /* CONFIG_MIPS_MT_SMTC */ - } - arch_init_irq(); #ifdef CONFIG_KGDB diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c index 9bb21c7f214..fcc86b96ccf 100644 --- a/arch/mips/kernel/irq_cpu.c +++ b/arch/mips/kernel/irq_cpu.c @@ -50,58 +50,13 @@ static inline void mask_mips_irq(unsigned int irq) irq_disable_hazard(); } -static inline void mips_cpu_irq_enable(unsigned int irq) -{ - unsigned long flags; - - local_irq_save(flags); - unmask_mips_irq(irq); - back_to_back_c0_hazard(); - local_irq_restore(flags); -} - -static void mips_cpu_irq_disable(unsigned int irq) -{ - unsigned long flags; - - local_irq_save(flags); - mask_mips_irq(irq); - back_to_back_c0_hazard(); - local_irq_restore(flags); -} - -static unsigned int mips_cpu_irq_startup(unsigned int irq) -{ - mips_cpu_irq_enable(irq); - - return 0; -} - -#define mips_cpu_irq_shutdown mips_cpu_irq_disable - -/* - * While we ack the interrupt interrupts are disabled and thus we don't need - * to deal with concurrency issues. Same for mips_cpu_irq_end. - */ -static void mips_cpu_irq_ack(unsigned int irq) -{ - mask_mips_irq(irq); -} - -static void mips_cpu_irq_end(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - unmask_mips_irq(irq); -} - static struct irq_chip mips_cpu_irq_controller = { .typename = "MIPS", - .startup = mips_cpu_irq_startup, - .shutdown = mips_cpu_irq_shutdown, - .enable = mips_cpu_irq_enable, - .disable = mips_cpu_irq_disable, - .ack = mips_cpu_irq_ack, - .end = mips_cpu_irq_end, + .ack = mask_mips_irq, + .mask = mask_mips_irq, + .mask_ack = mask_mips_irq, + .unmask = unmask_mips_irq, + .eoi = unmask_mips_irq, }; /* @@ -110,8 +65,6 @@ static struct irq_chip mips_cpu_irq_controller = { #define unmask_mips_mt_irq unmask_mips_irq #define mask_mips_mt_irq mask_mips_irq -#define mips_mt_cpu_irq_enable mips_cpu_irq_enable -#define mips_mt_cpu_irq_disable mips_cpu_irq_disable static unsigned int mips_mt_cpu_irq_startup(unsigned int irq) { @@ -119,13 +72,11 @@ static unsigned int mips_mt_cpu_irq_startup(unsigned int irq) clear_c0_cause(0x100 << (irq - mips_cpu_irq_base)); evpe(vpflags); - mips_mt_cpu_irq_enable(irq); + unmask_mips_mt_irq(irq); return 0; } -#define mips_mt_cpu_irq_shutdown mips_mt_cpu_irq_disable - /* * While we ack the interrupt interrupts are disabled and thus we don't need * to deal with concurrency issues. Same for mips_cpu_irq_end. @@ -138,16 +89,14 @@ static void mips_mt_cpu_irq_ack(unsigned int irq) mask_mips_mt_irq(irq); } -#define mips_mt_cpu_irq_end mips_cpu_irq_end - static struct irq_chip mips_mt_cpu_irq_controller = { .typename = "MIPS", .startup = mips_mt_cpu_irq_startup, - .shutdown = mips_mt_cpu_irq_shutdown, - .enable = mips_mt_cpu_irq_enable, - .disable = mips_mt_cpu_irq_disable, .ack = mips_mt_cpu_irq_ack, - .end = mips_mt_cpu_irq_end, + .mask = mask_mips_mt_irq, + .mask_ack = mips_mt_cpu_irq_ack, + .unmask = unmask_mips_mt_irq, + .eoi = unmask_mips_mt_irq, }; void __init mips_cpu_irq_init(int irq_base) @@ -163,19 +112,12 @@ void __init mips_cpu_irq_init(int irq_base) * leave them uninitialized for other processors. */ if (cpu_has_mipsmt) - for (i = irq_base; i < irq_base + 2; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &mips_mt_cpu_irq_controller; - } - - for (i = irq_base + 2; i < irq_base + 8; i++) { - irq_desc[i].status = IRQ_DISABLED; - irq_desc[i].action = NULL; - irq_desc[i].depth = 1; - irq_desc[i].chip = &mips_cpu_irq_controller; - } + for (i = irq_base; i < irq_base + 2; i++) + set_irq_chip(i, &mips_mt_cpu_irq_controller); + + for (i = irq_base + 2; i < irq_base + 8; i++) + set_irq_chip_and_handler(i, &mips_cpu_irq_controller, + handle_level_irq); mips_cpu_irq_base = irq_base; } diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c index f06a144c788..5929f883e46 100644 --- a/arch/mips/kernel/kspd.c +++ b/arch/mips/kernel/kspd.c @@ -301,7 +301,7 @@ static void sp_cleanup(void) for (;;) { unsigned long set; i = j * __NFDBITS; - if (i >= fdt->max_fdset || i >= fdt->max_fds) + if (i >= fdt->max_fds) break; set = fdt->open_fds->fds_bits[j++]; while (set) { @@ -319,7 +319,7 @@ static void sp_cleanup(void) static int channel_open = 0; /* the work handler */ -static void sp_work(void *data) +static void sp_work(struct work_struct *unused) { if (!channel_open) { if( rtlx_open(RTLX_CHANNEL_SYSIO, 1) != 0) { @@ -354,7 +354,7 @@ static void startwork(int vpe) return; } - INIT_WORK(&work, sp_work, NULL); + INIT_WORK(&work, sp_work); queue_work(workqueue, &work); } else queue_work(workqueue, &work); diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index 7a3ebbeba1f..de3fae260ff 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -382,531 +382,6 @@ asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, return ret; } -struct msgbuf32 { s32 mtype; char mtext[1]; }; - -struct ipc_perm32 -{ - key_t key; - __compat_uid_t uid; - __compat_gid_t gid; - __compat_uid_t cuid; - __compat_gid_t cgid; - compat_mode_t mode; - unsigned short seq; -}; - -struct ipc64_perm32 { - key_t key; - __compat_uid_t uid; - __compat_gid_t gid; - __compat_uid_t cuid; - __compat_gid_t cgid; - compat_mode_t mode; - unsigned short seq; - unsigned short __pad1; - unsigned int __unused1; - unsigned int __unused2; -}; - -struct semid_ds32 { - struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */ - compat_time_t sem_otime; /* last semop time */ - compat_time_t sem_ctime; /* last change time */ - u32 sem_base; /* ptr to first semaphore in array */ - u32 sem_pending; /* pending operations to be processed */ - u32 sem_pending_last; /* last pending operation */ - u32 undo; /* undo requests on this array */ - unsigned short sem_nsems; /* no. of semaphores in array */ -}; - -struct semid64_ds32 { - struct ipc64_perm32 sem_perm; - compat_time_t sem_otime; - compat_time_t sem_ctime; - unsigned int sem_nsems; - unsigned int __unused1; - unsigned int __unused2; -}; - -struct msqid_ds32 -{ - struct ipc_perm32 msg_perm; - u32 msg_first; - u32 msg_last; - compat_time_t msg_stime; - compat_time_t msg_rtime; - compat_time_t msg_ctime; - u32 wwait; - u32 rwait; - unsigned short msg_cbytes; - unsigned short msg_qnum; - unsigned short msg_qbytes; - compat_ipc_pid_t msg_lspid; - compat_ipc_pid_t msg_lrpid; -}; - -struct msqid64_ds32 { - struct ipc64_perm32 msg_perm; - compat_time_t msg_stime; - unsigned int __unused1; - compat_time_t msg_rtime; - unsigned int __unused2; - compat_time_t msg_ctime; - unsigned int __unused3; - unsigned int msg_cbytes; - unsigned int msg_qnum; - unsigned int msg_qbytes; - compat_pid_t msg_lspid; - compat_pid_t msg_lrpid; - unsigned int __unused4; - unsigned int __unused5; -}; - -struct shmid_ds32 { - struct ipc_perm32 shm_perm; - int shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; - compat_ipc_pid_t shm_cpid; - compat_ipc_pid_t shm_lpid; - unsigned short shm_nattch; -}; - -struct shmid64_ds32 { - struct ipc64_perm32 shm_perm; - compat_size_t shm_segsz; - compat_time_t shm_atime; - compat_time_t shm_dtime; - compat_time_t shm_ctime; - compat_pid_t shm_cpid; - compat_pid_t shm_lpid; - unsigned int shm_nattch; - unsigned int __unused1; - unsigned int __unused2; -}; - -struct ipc_kludge32 { - u32 msgp; - s32 msgtyp; -}; - -static int -do_sys32_semctl(int first, int second, int third, void __user *uptr) -{ - union semun fourth; - u32 pad; - int err, err2; - struct semid64_ds s; - mm_segment_t old_fs; - - if (!uptr) - return -EINVAL; - err = -EFAULT; - if (get_user (pad, (u32 __user *)uptr)) - return err; - if ((third & ~IPC_64) == SETVAL) - fourth.val = (int)pad; - else - fourth.__pad = (void __user *)A(pad); - switch (third & ~IPC_64) { - case IPC_INFO: - case IPC_RMID: - case IPC_SET: - case SEM_INFO: - case GETVAL: - case GETPID: - case GETNCNT: - case GETZCNT: - case GETALL: - case SETVAL: - case SETALL: - err = sys_semctl (first, second, third, fourth); - break; - - case IPC_STAT: - case SEM_STAT: - fourth.__pad = (struct semid64_ds __user *)&s; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_semctl(first, second, third | IPC_64, fourth); - set_fs(old_fs); - - if (third & IPC_64) { - struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad); - - if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) { - err = -EFAULT; - break; - } - err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key); - err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid); - err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid); - err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid); - err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid); - err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode); - err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq); - err2 |= __put_user(s.sem_otime, &usp64->sem_otime); - err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime); - err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems); - } else { - struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad); - - if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) { - err = -EFAULT; - break; - } - err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key); - err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid); - err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid); - err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid); - err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid); - err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode); - err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq); - err2 |= __put_user(s.sem_otime, &usp32->sem_otime); - err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime); - err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems); - } - if (err2) - err = -EFAULT; - break; - - default: - err = - EINVAL; - break; - } - - return err; -} - -static int -do_sys32_msgsnd (int first, int second, int third, void __user *uptr) -{ - struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr; - struct msgbuf *p; - mm_segment_t old_fs; - int err; - - if (second < 0) - return -EINVAL; - p = kmalloc (second + sizeof (struct msgbuf) - + 4, GFP_USER); - if (!p) - return -ENOMEM; - err = get_user (p->mtype, &up->mtype); - if (err) - goto out; - err |= __copy_from_user (p->mtext, &up->mtext, second); - if (err) - goto out; - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third); - set_fs (old_fs); -out: - kfree (p); - - return err; -} - -static int -do_sys32_msgrcv (int first, int second, int msgtyp, int third, - int version, void __user *uptr) -{ - struct msgbuf32 __user *up; - struct msgbuf *p; - mm_segment_t old_fs; - int err; - - if (!version) { - struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr; - struct ipc_kludge32 ipck; - - err = -EINVAL; - if (!uptr) - goto out; - err = -EFAULT; - if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32))) - goto out; - uptr = (void __user *)AA(ipck.msgp); - msgtyp = ipck.msgtyp; - } - - if (second < 0) - return -EINVAL; - err = -ENOMEM; - p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER); - if (!p) - goto out; - old_fs = get_fs (); - set_fs (KERNEL_DS); - err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third); - set_fs (old_fs); - if (err < 0) - goto free_then_out; - up = (struct msgbuf32 __user *)uptr; - if (put_user (p->mtype, &up->mtype) || - __copy_to_user (&up->mtext, p->mtext, err)) - err = -EFAULT; -free_then_out: - kfree (p); -out: - return err; -} - -static int -do_sys32_msgctl (int first, int second, void __user *uptr) -{ - int err = -EINVAL, err2; - struct msqid64_ds m; - struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr; - struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr; - mm_segment_t old_fs; - - switch (second & ~IPC_64) { - case IPC_INFO: - case IPC_RMID: - case MSG_INFO: - err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr); - break; - - case IPC_SET: - if (second & IPC_64) { - if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid); - err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid); - err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode); - err |= __get_user(m.msg_qbytes, &up64->msg_qbytes); - } else { - if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid); - err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid); - err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode); - err |= __get_user(m.msg_qbytes, &up32->msg_qbytes); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); - set_fs(old_fs); - break; - - case IPC_STAT: - case MSG_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m); - set_fs(old_fs); - if (second & IPC_64) { - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key); - err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid); - err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid); - err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid); - err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid); - err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode); - err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq); - err2 |= __put_user(m.msg_stime, &up64->msg_stime); - err2 |= __put_user(m.msg_rtime, &up64->msg_rtime); - err2 |= __put_user(m.msg_ctime, &up64->msg_ctime); - err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes); - err2 |= __put_user(m.msg_qnum, &up64->msg_qnum); - err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes); - err2 |= __put_user(m.msg_lspid, &up64->msg_lspid); - err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid); - if (err2) - err = -EFAULT; - } else { - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key); - err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid); - err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid); - err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid); - err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid); - err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode); - err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq); - err2 |= __put_user(m.msg_stime, &up32->msg_stime); - err2 |= __put_user(m.msg_rtime, &up32->msg_rtime); - err2 |= __put_user(m.msg_ctime, &up32->msg_ctime); - err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes); - err2 |= __put_user(m.msg_qnum, &up32->msg_qnum); - err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes); - err2 |= __put_user(m.msg_lspid, &up32->msg_lspid); - err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid); - if (err2) - err = -EFAULT; - } - break; - } - - return err; -} - -static int -do_sys32_shmat (int first, int second, int third, int version, void __user *uptr) -{ - unsigned long raddr; - u32 __user *uaddr = (u32 __user *)A((u32)third); - int err = -EINVAL; - - if (version == 1) - return err; - err = do_shmat (first, uptr, second, &raddr); - if (err) - return err; - err = put_user (raddr, uaddr); - return err; -} - -struct shm_info32 { - int used_ids; - u32 shm_tot, shm_rss, shm_swp; - u32 swap_attempts, swap_successes; -}; - -static int -do_sys32_shmctl (int first, int second, void __user *uptr) -{ - struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr; - struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr; - struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr; - int err = -EFAULT, err2; - struct shmid64_ds s64; - mm_segment_t old_fs; - struct shm_info si; - struct shmid_ds s; - - switch (second & ~IPC_64) { - case IPC_INFO: - second = IPC_INFO; /* So that we don't have to translate it */ - case IPC_RMID: - case SHM_LOCK: - case SHM_UNLOCK: - err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr); - break; - case IPC_SET: - if (second & IPC_64) { - err = get_user(s.shm_perm.uid, &up64->shm_perm.uid); - err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid); - err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode); - } else { - err = get_user(s.shm_perm.uid, &up32->shm_perm.uid); - err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid); - err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode); - } - if (err) - break; - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s); - set_fs(old_fs); - break; - - case IPC_STAT: - case SHM_STAT: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second | IPC_64, (void __user *) &s64); - set_fs(old_fs); - if (err < 0) - break; - if (second & IPC_64) { - if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) { - err = -EFAULT; - break; - } - err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up64->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid); - } else { - if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) { - err = -EFAULT; - break; - } - err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key); - err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid); - err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid); - err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid); - err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid); - err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode); - err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq); - err2 |= __put_user(s64.shm_atime, &up32->shm_atime); - err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime); - err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime); - err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz); - err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch); - err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid); - err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid); - } - if (err2) - err = -EFAULT; - break; - - case SHM_INFO: - old_fs = get_fs(); - set_fs(KERNEL_DS); - err = sys_shmctl(first, second, (void __user *)&si); - set_fs(old_fs); - if (err < 0) - break; - err2 = put_user(si.used_ids, &uip->used_ids); - err2 |= __put_user(si.shm_tot, &uip->shm_tot); - err2 |= __put_user(si.shm_rss, &uip->shm_rss); - err2 |= __put_user(si.shm_swp, &uip->shm_swp); - err2 |= __put_user(si.swap_attempts, &uip->swap_attempts); - err2 |= __put_user (si.swap_successes, &uip->swap_successes); - if (err2) - err = -EFAULT; - break; - - default: - err = -EINVAL; - break; - } - - return err; -} - -static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems, - const struct compat_timespec __user *timeout32) -{ - struct compat_timespec t32; - struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64)); - - if (copy_from_user(&t32, timeout32, sizeof(t32))) - return -EFAULT; - - if (put_user(t32.tv_sec, &t64->tv_sec) || - put_user(t32.tv_nsec, &t64->tv_nsec)) - return -EFAULT; - - return sys_semtimedop(semid, tsems, nsems, t64); -} - asmlinkage long sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) { @@ -918,48 +393,43 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) switch (call) { case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ - err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second, - NULL); + err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); break; case SEMTIMEDOP: - err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second, - (const struct compat_timespec __user *)AA(fifth)); + err = compat_sys_semtimedop(first, compat_ptr(ptr), second, + compat_ptr(fifth)); break; case SEMGET: - err = sys_semget (first, second, third); + err = sys_semget(first, second, third); break; case SEMCTL: - err = do_sys32_semctl (first, second, third, - (void __user *)AA(ptr)); + err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); break; - case MSGSND: - err = do_sys32_msgsnd (first, second, third, - (void __user *)AA(ptr)); + err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); break; case MSGRCV: - err = do_sys32_msgrcv (first, second, fifth, third, - version, (void __user *)AA(ptr)); + err = compat_sys_msgrcv(first, second, fifth, third, + version, compat_ptr(ptr)); break; case MSGGET: - err = sys_msgget ((key_t) first, second); + err = sys_msgget((key_t) first, second); break; case MSGCTL: - err = do_sys32_msgctl (first, second, (void __user *)AA(ptr)); + err = compat_sys_msgctl(first, second, compat_ptr(ptr)); break; - case SHMAT: - err = do_sys32_shmat (first, second, third, - version, (void __user *)AA(ptr)); + err = compat_sys_shmat(first, second, third, version, + compat_ptr(ptr)); break; case SHMDT: - err = sys_shmdt ((char __user *)A(ptr)); + err = sys_shmdt(compat_ptr(ptr)); break; case SHMGET: - err = sys_shmget (first, (unsigned)second, third); + err = sys_shmget(first, (unsigned)second, third); break; case SHMCTL: - err = do_sys32_shmctl (first, second, (void __user *)AA(ptr)); + err = compat_sys_shmctl(first, second, compat_ptr(ptr)); break; default: err = -EINVAL; @@ -969,18 +439,28 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) return err; } -asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, - int shmflg, int32_t __user *addr) +#ifdef CONFIG_MIPS32_N32 +asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, u32 arg) { - unsigned long raddr; - int err; + /* compat_sys_semctl expects a pointer to union semun */ + u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); + if (put_user(arg, uptr)) + return -EFAULT; + return compat_sys_semctl(semid, semnum, cmd, uptr); +} - err = do_shmat(shmid, shmaddr, shmflg, &raddr); - if (err) - return err; +asmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg) +{ + return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp)); +} - return put_user(raddr, addr); +asmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp, + int msgflg) +{ + return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64, + compat_ptr(msgp)); } +#endif struct sysctl_args32 { diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c new file mode 100644 index 00000000000..e0ad754c7ed --- /dev/null +++ b/arch/mips/kernel/machine_kexec.c @@ -0,0 +1,85 @@ +/* + * machine_kexec.c for kexec + * Created by <nschichan@corp.free.fr> on Thu Oct 12 15:15:06 2006 + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <linux/kexec.h> +#include <linux/mm.h> +#include <linux/delay.h> + +#include <asm/cacheflush.h> +#include <asm/page.h> + +const extern unsigned char relocate_new_kernel[]; +const extern unsigned int relocate_new_kernel_size; + +extern unsigned long kexec_start_address; +extern unsigned long kexec_indirection_page; + +int +machine_kexec_prepare(struct kimage *kimage) +{ + return 0; +} + +void +machine_kexec_cleanup(struct kimage *kimage) +{ +} + +void +machine_shutdown(void) +{ +} + +void +machine_crash_shutdown(struct pt_regs *regs) +{ +} + +void +machine_kexec(struct kimage *image) +{ + unsigned long reboot_code_buffer; + unsigned long entry; + unsigned long *ptr; + + reboot_code_buffer = + (unsigned long)page_address(image->control_code_page); + + kexec_start_address = image->start; + kexec_indirection_page = phys_to_virt(image->head & PAGE_MASK); + + memcpy((void*)reboot_code_buffer, relocate_new_kernel, + relocate_new_kernel_size); + + /* + * The generic kexec code builds a page list with physical + * addresses. they are directly accessible through KSEG0 (or + * CKSEG0 or XPHYS if on 64bit system), hence the + * pys_to_virt() call. + */ + for (ptr = &image->head; (entry = *ptr) && !(entry &IND_DONE); + ptr = (entry & IND_INDIRECTION) ? + phys_to_virt(entry & PAGE_MASK) : ptr + 1) { + if (*ptr & IND_SOURCE || *ptr & IND_INDIRECTION || + *ptr & IND_DESTINATION) + *ptr = phys_to_virt(*ptr); + } + + /* + * we do not want to be bothered. + */ + local_irq_disable(); + + flush_icache_range(reboot_code_buffer, + reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE); + + printk("Will call new kernel at %08x\n", image->start); + printk("Bye ...\n"); + flush_cache_all(); + ((void (*)(void))reboot_code_buffer)(); +} diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c index f44a01357ad..2ef857c3ee5 100644 --- a/arch/mips/kernel/mips_ksyms.c +++ b/arch/mips/kernel/mips_ksyms.c @@ -46,5 +46,7 @@ EXPORT_SYMBOL(__strnlen_user_nocheck_asm); EXPORT_SYMBOL(__strnlen_user_asm); EXPORT_SYMBOL(csum_partial); +EXPORT_SYMBOL(csum_partial_copy_nocheck); +EXPORT_SYMBOL(__csum_partial_copy_user); EXPORT_SYMBOL(invalid_pte_table); diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index d7bf0215bc1..cb0801437b6 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -29,6 +29,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/spinlock.h> +#include <asm/pgtable.h> /* MODULE_START */ struct mips_hi16 { struct mips_hi16 *next; @@ -43,9 +44,23 @@ static DEFINE_SPINLOCK(dbe_lock); void *module_alloc(unsigned long size) { +#ifdef MODULE_START + struct vm_struct *area; + + size = PAGE_ALIGN(size); + if (!size) + return NULL; + + area = __get_vm_area(size, VM_ALLOC, MODULE_START, MODULE_END); + if (!area) + return NULL; + + return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL); +#else if (size == 0) return NULL; return vmalloc(size); +#endif } /* Free memory returned from module_alloc */ diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S new file mode 100644 index 00000000000..a3f0d00c133 --- /dev/null +++ b/arch/mips/kernel/relocate_kernel.S @@ -0,0 +1,80 @@ +/* + * relocate_kernel.S for kexec + * Created by <nschichan@corp.free.fr> on Thu Oct 12 17:49:57 2006 + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <asm/asm.h> +#include <asm/asmmacro.h> +#include <asm/regdef.h> +#include <asm/page.h> +#include <asm/mipsregs.h> +#include <asm/stackframe.h> +#include <asm/addrspace.h> + + .globl relocate_new_kernel +relocate_new_kernel: + + PTR_L s0, kexec_indirection_page + PTR_L s1, kexec_start_address + +process_entry: + PTR_L s2, (s0) + PTR_ADD s0, s0, SZREG + + /* destination page */ + and s3, s2, 0x1 + beq s3, zero, 1f + and s4, s2, ~0x1 /* store destination addr in s4 */ + move a0, s4 + b process_entry + +1: + /* indirection page, update s0 */ + and s3, s2, 0x2 + beq s3, zero, 1f + and s0, s2, ~0x2 + b process_entry + +1: + /* done page */ + and s3, s2, 0x4 + beq s3, zero, 1f + b done +1: + /* source page */ + and s3, s2, 0x8 + beq s3, zero, process_entry + and s2, s2, ~0x8 + li s6, (1 << PAGE_SHIFT) / SZREG + +copy_word: + /* copy page word by word */ + REG_L s5, (s2) + REG_S s5, (s4) + INT_ADD s4, s4, SZREG + INT_ADD s2, s2, SZREG + INT_SUB s6, s6, 1 + beq s6, zero, process_entry + b copy_word + b process_entry + +done: + /* jump to kexec_start_address */ + j s1 + + .globl kexec_start_address +kexec_start_address: + .long 0x0 + + .globl kexec_indirection_page +kexec_indirection_page: + .long 0x0 + +relocate_new_kernel_end: + + .globl relocate_new_kernel_size +relocate_new_kernel_size: + .long relocate_new_kernel_end - relocate_new_kernel diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c index 621037db229..060563a712b 100644 --- a/arch/mips/kernel/reset.c +++ b/arch/mips/kernel/reset.c @@ -23,6 +23,8 @@ void (*_machine_restart)(char *command); void (*_machine_halt)(void); void (*pm_power_off)(void); +EXPORT_SYMBOL(pm_power_off); + void machine_restart(char *command) { if (_machine_restart) diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index 8c8c8324f77..5a99e3e0c96 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -415,7 +415,7 @@ static unsigned int file_poll(struct file *file, poll_table * wait) int minor; unsigned int mask = 0; - minor = iminor(file->f_dentry->d_inode); + minor = iminor(file->f_path.dentry->d_inode); poll_wait(file, &channel_wqs[minor].rt_queue, wait); poll_wait(file, &channel_wqs[minor].lx_queue, wait); @@ -437,7 +437,7 @@ static unsigned int file_poll(struct file *file, poll_table * wait) static ssize_t file_read(struct file *file, char __user * buffer, size_t count, loff_t * ppos) { - int minor = iminor(file->f_dentry->d_inode); + int minor = iminor(file->f_path.dentry->d_inode); /* data available? */ if (!rtlx_read_poll(minor, (file->f_flags & O_NONBLOCK) ? 0 : 1)) { @@ -454,7 +454,7 @@ static ssize_t file_write(struct file *file, const char __user * buffer, struct rtlx_channel *rt; DECLARE_WAITQUEUE(wait, current); - minor = iminor(file->f_dentry->d_inode); + minor = iminor(file->f_path.dentry->d_inode); rt = &rtlx->channel[minor]; /* any space left... */ diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index a95f37de080..7c0b3936ba4 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -653,7 +653,7 @@ einval: li v0, -EINVAL sys sys_move_pages 6 sys sys_set_robust_list 2 sys sys_get_robust_list 3 /* 4310 */ - sys sys_ni_syscall 0 + sys sys_kexec_load 4 sys sys_getcpu 3 sys sys_epoll_pwait 6 .endm diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 8fb0f60f657..e569b846e9a 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -468,6 +468,6 @@ sys_call_table: PTR sys_move_pages PTR sys_set_robust_list PTR sys_get_robust_list - PTR sys_ni_syscall /* 5270 */ + PTR sys_kexec_load /* 5270 */ PTR sys_getcpu PTR sys_epoll_pwait diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 0da5ca2040f..a7bff2a5472 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -149,8 +149,8 @@ EXPORT(sysn32_call_table) PTR sys_mincore PTR sys_madvise PTR sys_shmget - PTR sys32_shmat - PTR sys_shmctl /* 6030 */ + PTR sys_shmat + PTR compat_sys_shmctl /* 6030 */ PTR sys_dup PTR sys_dup2 PTR sys_pause @@ -184,12 +184,12 @@ EXPORT(sysn32_call_table) PTR sys32_newuname PTR sys_semget PTR sys_semop - PTR sys_semctl + PTR sysn32_semctl PTR sys_shmdt /* 6065 */ PTR sys_msgget - PTR sys_msgsnd - PTR sys_msgrcv - PTR sys_msgctl + PTR sysn32_msgsnd + PTR sysn32_msgrcv + PTR compat_sys_msgctl PTR compat_sys_fcntl /* 6070 */ PTR sys_flock PTR sys_fsync @@ -335,7 +335,7 @@ EXPORT(sysn32_call_table) PTR compat_sys_fcntl64 PTR sys_set_tid_address PTR sys_restart_syscall - PTR sys_semtimedop /* 6215 */ + PTR compat_sys_semtimedop /* 6215 */ PTR sys_fadvise64_64 PTR compat_sys_statfs64 PTR compat_sys_fstatfs64 @@ -394,6 +394,6 @@ EXPORT(sysn32_call_table) PTR sys_move_pages PTR compat_sys_set_robust_list PTR compat_sys_get_robust_list - PTR sys_ni_syscall + PTR compat_sys_kexec_load PTR sys_getcpu PTR sys_epoll_pwait diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index b9d00cae8b5..e91379c1be1 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -516,7 +516,7 @@ sys_call_table: PTR compat_sys_move_pages PTR compat_sys_set_robust_list PTR compat_sys_get_robust_list /* 4310 */ - PTR sys_ni_syscall + PTR compat_sys_kexec_load PTR sys_getcpu PTR sys_epoll_pwait .size sys_call_table,.-sys_call_table diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 8f6e89697cc..89440a0d852 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -145,13 +145,12 @@ static int __init rd_start_early(char *p) unsigned long start = memparse(p, &p); #ifdef CONFIG_64BIT - /* HACK: Guess if the sign extension was forgotten */ - if (start > 0x0000000080000000 && start < 0x00000000ffffffff) - start |= 0xffffffff00000000UL; + /* Guess if the sign extension was forgotten by bootloader */ + if (start < XKPHYS) + start = (int)start; #endif initrd_start = start; initrd_end += start; - return 0; } early_param("rd_start", rd_start_early); @@ -159,41 +158,64 @@ early_param("rd_start", rd_start_early); static int __init rd_size_early(char *p) { initrd_end += memparse(p, &p); - return 0; } early_param("rd_size", rd_size_early); +/* it returns the next free pfn after initrd */ static unsigned long __init init_initrd(void) { - unsigned long tmp, end, size; + unsigned long end; u32 *initrd_header; - ROOT_DEV = Root_RAM0; - /* * Board specific code or command line parser should have * already set up initrd_start and initrd_end. In these cases * perfom sanity checks and use them if all looks good. */ - size = initrd_end - initrd_start; - if (initrd_end == 0 || size == 0) { - initrd_start = 0; - initrd_end = 0; - } else - return initrd_end; - - end = (unsigned long)&_end; - tmp = PAGE_ALIGN(end) - sizeof(u32) * 2; - if (tmp < end) - tmp += PAGE_SIZE; - - initrd_header = (u32 *)tmp; - if (initrd_header[0] == 0x494E5244) { - initrd_start = (unsigned long)&initrd_header[2]; - initrd_end = initrd_start + initrd_header[1]; + if (initrd_start && initrd_end > initrd_start) + goto sanitize; + + /* + * See if initrd has been added to the kernel image by + * arch/mips/boot/addinitrd.c. In that case a header is + * prepended to initrd and is made up by 8 bytes. The fisrt + * word is a magic number and the second one is the size of + * initrd. Initrd start must be page aligned in any cases. + */ + initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8; + if (initrd_header[0] != 0x494E5244) + goto disable; + initrd_start = (unsigned long)(initrd_header + 2); + initrd_end = initrd_start + initrd_header[1]; + +sanitize: + if (initrd_start & ~PAGE_MASK) { + printk(KERN_ERR "initrd start must be page aligned\n"); + goto disable; } - return initrd_end; + if (initrd_start < PAGE_OFFSET) { + printk(KERN_ERR "initrd start < PAGE_OFFSET\n"); + goto disable; + } + + /* + * Sanitize initrd addresses. For example firmware + * can't guess if they need to pass them through + * 64-bits values if the kernel has been built in pure + * 32-bit. We need also to switch from KSEG0 to XKPHYS + * addresses now, so the code can now safely use __pa(). + */ + end = __pa(initrd_end); + initrd_end = (unsigned long)__va(end); + initrd_start = (unsigned long)__va(__pa(initrd_start)); + + ROOT_DEV = Root_RAM0; + return PFN_UP(end); +disable: + initrd_start = 0; + initrd_end = 0; + return 0; } static void __init finalize_initrd(void) @@ -204,12 +226,12 @@ static void __init finalize_initrd(void) printk(KERN_INFO "Initrd not found or empty"); goto disable; } - if (CPHYSADDR(initrd_end) > PFN_PHYS(max_low_pfn)) { + if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) { printk("Initrd extends beyond end of memory"); goto disable; } - reserve_bootmem(CPHYSADDR(initrd_start), size); + reserve_bootmem(__pa(initrd_start), size); initrd_below_start_ok = 1; printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", @@ -259,8 +281,7 @@ static void __init bootmem_init(void) * not selected. Once that done we can determine the low bound * of usable memory. */ - reserved_end = init_initrd(); - reserved_end = PFN_UP(CPHYSADDR(max(reserved_end, (unsigned long)&_end))); + reserved_end = max(init_initrd(), PFN_UP(__pa_symbol(&_end))); /* * Find the highest page frame number we have available. @@ -432,10 +453,10 @@ static void __init resource_init(void) if (UNCAC_BASE != IO_BASE) return; - code_resource.start = virt_to_phys(&_text); - code_resource.end = virt_to_phys(&_etext) - 1; - data_resource.start = virt_to_phys(&_etext); - data_resource.end = virt_to_phys(&_edata) - 1; + code_resource.start = __pa_symbol(&_text); + code_resource.end = __pa_symbol(&_etext) - 1; + data_resource.start = __pa_symbol(&_etext); + data_resource.end = __pa_symbol(&_edata) - 1; /* * Request address space for all standard RAM. diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index 477c5334ec1..a67c18555ed 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -17,7 +17,6 @@ */ #include <linux/cache.h> #include <linux/sched.h> -#include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> #include <linux/smp_lock.h> diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c index 2ac19a6cbf6..1ee689c0e0c 100644 --- a/arch/mips/kernel/smp-mt.c +++ b/arch/mips/kernel/smp-mt.c @@ -278,7 +278,9 @@ void __init plat_prepare_cpus(unsigned int max_cpus) /* need to mark IPI's as IRQ_PER_CPU */ irq_desc[cpu_ipi_resched_irq].status |= IRQ_PER_CPU; + set_irq_handler(cpu_ipi_resched_irq, handle_percpu_irq); irq_desc[cpu_ipi_call_irq].status |= IRQ_PER_CPU; + set_irq_handler(cpu_ipi_call_irq, handle_percpu_irq); } /* diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 49db516789e..0555fc554f6 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -172,7 +172,7 @@ int smp_call_function (void (*func) (void *info), void *info, int retry, spin_lock(&smp_call_lock); call_data = &data; - mb(); + smp_mb(); /* Send a message to all other CPUs and wait for them to respond */ for_each_online_cpu(i) @@ -204,7 +204,7 @@ void smp_call_function_interrupt(void) * Notify initiating CPU that I've grabbed the data and am * about to execute the function. */ - mb(); + smp_mb(); atomic_inc(&call_data->started); /* @@ -215,7 +215,7 @@ void smp_call_function_interrupt(void) irq_exit(); if (wait) { - mb(); + smp_mb(); atomic_inc(&call_data->finished); } } @@ -271,7 +271,7 @@ void __devinit smp_prepare_boot_cpu(void) * and keep control until "cpu_online(cpu)" is set. Note: cpu is * physical, not logical. */ -int __devinit __cpu_up(unsigned int cpu) +int __cpuinit __cpu_up(unsigned int cpu) { struct task_struct *idle; diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index 3b78caf112f..802febed7df 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -1009,6 +1009,7 @@ void setup_cross_vpe_interrupts(void) setup_irq_smtc(cpu_ipi_irq, &irq_ipi, (0x100 << MIPS_CPU_IPI_IRQ)); irq_desc[cpu_ipi_irq].status |= IRQ_PER_CPU; + set_irq_handler(cpu_ipi_irq, handle_percpu_irq); } /* diff --git a/arch/mips/kernel/sysirix.c b/arch/mips/kernel/sysirix.c index 93c74fefff7..6c2406a93f2 100644 --- a/arch/mips/kernel/sysirix.c +++ b/arch/mips/kernel/sysirix.c @@ -732,7 +732,7 @@ asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf) goto out; } - error = vfs_statfs(file->f_dentry, &kbuf); + error = vfs_statfs(file->f_path.dentry, &kbuf); if (error) goto out_f; @@ -1041,7 +1041,7 @@ asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot, unsigned long old_pos; long max_size = offset + len; - if (max_size > file->f_dentry->d_inode->i_size) { + if (max_size > file->f_path.dentry->d_inode->i_size) { old_pos = sys_lseek (fd, max_size - 1, 0); sys_write (fd, (void __user *) "", 1); sys_lseek (fd, old_pos, 0); @@ -1406,7 +1406,7 @@ asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf) error = -EBADF; goto out; } - error = vfs_statfs(file->f_dentry, &kbuf); + error = vfs_statfs(file->f_path.dentry, &kbuf); if (error) goto out_f; @@ -1526,7 +1526,7 @@ asmlinkage int irix_mmap64(struct pt_regs *regs) unsigned long old_pos; long max_size = off2 + len; - if (max_size > file->f_dentry->d_inode->i_size) { + if (max_size > file->f_path.dentry->d_inode->i_size) { old_pos = sys_lseek (fd, max_size - 1, 0); sys_write (fd, (void __user *) "", 1); sys_lseek (fd, old_pos, 0); @@ -1658,7 +1658,7 @@ asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf) error = -EBADF; goto out; } - error = vfs_statfs(file->f_dentry, &kbuf); + error = vfs_statfs(file->f_path.dentry, &kbuf); if (error) goto out_f; diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index e535f86efa2..8aa544f73a5 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -11,7 +11,6 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ -#include <linux/clocksource.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/init.h> @@ -83,17 +82,11 @@ static void null_timer_ack(void) { /* nothing */ } /* * Null high precision timer functions for systems lacking one. */ -static unsigned int null_hpt_read(void) +static cycle_t null_hpt_read(void) { return 0; } -static void __init null_hpt_init(void) -{ - /* nothing */ -} - - /* * Timer ack for an R4k-compatible timer of a known frequency. */ @@ -101,10 +94,8 @@ static void c0_timer_ack(void) { unsigned int count; -#ifndef CONFIG_SOC_PNX8550 /* pnx8550 resets to zero */ /* Ack this timer interrupt and set the next one. */ expirelo += cycles_per_jiffy; -#endif write_c0_compare(expirelo); /* Check to see if we have missed any timer interrupts. */ @@ -118,7 +109,7 @@ static void c0_timer_ack(void) /* * High precision timer functions for a R4k-compatible timer. */ -static unsigned int c0_hpt_read(void) +static cycle_t c0_hpt_read(void) { return read_c0_count(); } @@ -132,9 +123,6 @@ static void __init c0_hpt_timer_init(void) int (*mips_timer_state)(void); void (*mips_timer_ack)(void); -unsigned int (*mips_hpt_read)(void); -void (*mips_hpt_init)(void) __initdata = null_hpt_init; -unsigned int mips_hpt_mask = 0xffffffff; /* last time when xtime and rtc are sync'ed up */ static long last_rtc_update; @@ -276,8 +264,7 @@ static struct irqaction timer_irqaction = { static unsigned int __init calibrate_hpt(void) { - u64 frequency; - u32 hpt_start, hpt_end, hpt_count, hz; + cycle_t frequency, hpt_start, hpt_end, hpt_count, hz; const int loops = HZ / 10; int log_2_loops = 0; @@ -303,28 +290,23 @@ static unsigned int __init calibrate_hpt(void) * during the calculated number of periods between timer * interrupts. */ - hpt_start = mips_hpt_read(); + hpt_start = clocksource_mips.read(); do { while (mips_timer_state()); while (!mips_timer_state()); } while (--i); - hpt_end = mips_hpt_read(); + hpt_end = clocksource_mips.read(); - hpt_count = (hpt_end - hpt_start) & mips_hpt_mask; + hpt_count = (hpt_end - hpt_start) & clocksource_mips.mask; hz = HZ; - frequency = (u64)hpt_count * (u64)hz; + frequency = hpt_count * hz; return frequency >> log_2_loops; } -static cycle_t read_mips_hpt(void) -{ - return (cycle_t)mips_hpt_read(); -} - -static struct clocksource clocksource_mips = { +struct clocksource clocksource_mips = { .name = "MIPS", - .read = read_mips_hpt, + .mask = 0xffffffff, .is_continuous = 1, }; @@ -333,7 +315,7 @@ static void __init init_mips_clocksource(void) u64 temp; u32 shift; - if (!mips_hpt_frequency || mips_hpt_read == null_hpt_read) + if (!mips_hpt_frequency || clocksource_mips.read == null_hpt_read) return; /* Calclate a somewhat reasonable rating value */ @@ -347,7 +329,6 @@ static void __init init_mips_clocksource(void) } clocksource_mips.shift = shift; clocksource_mips.mult = (u32)temp; - clocksource_mips.mask = mips_hpt_mask; clocksource_register(&clocksource_mips); } @@ -367,32 +348,36 @@ void __init time_init(void) -xtime.tv_sec, -xtime.tv_nsec); /* Choose appropriate high precision timer routines. */ - if (!cpu_has_counter && !mips_hpt_read) + if (!cpu_has_counter && !clocksource_mips.read) /* No high precision timer -- sorry. */ - mips_hpt_read = null_hpt_read; + clocksource_mips.read = null_hpt_read; else if (!mips_hpt_frequency && !mips_timer_state) { /* A high precision timer of unknown frequency. */ - if (!mips_hpt_read) + if (!clocksource_mips.read) /* No external high precision timer -- use R4k. */ - mips_hpt_read = c0_hpt_read; + clocksource_mips.read = c0_hpt_read; } else { /* We know counter frequency. Or we can get it. */ - if (!mips_hpt_read) { + if (!clocksource_mips.read) { /* No external high precision timer -- use R4k. */ - mips_hpt_read = c0_hpt_read; + clocksource_mips.read = c0_hpt_read; if (!mips_timer_state) { /* No external timer interrupt -- use R4k. */ - mips_hpt_init = c0_hpt_timer_init; mips_timer_ack = c0_timer_ack; + /* Calculate cache parameters. */ + cycles_per_jiffy = + (mips_hpt_frequency + HZ / 2) / HZ; + /* + * This sets up the high precision + * timer for the first interrupt. + */ + c0_hpt_timer_init(); } } if (!mips_hpt_frequency) mips_hpt_frequency = calibrate_hpt(); - /* Calculate cache parameters. */ - cycles_per_jiffy = (mips_hpt_frequency + HZ / 2) / HZ; - /* Report the high precision timer rate for a reference. */ printk("Using %u.%03u MHz high precision timer.\n", ((mips_hpt_frequency + 500) / 1000) / 1000, @@ -403,9 +388,6 @@ void __init time_init(void) /* No timer interrupt ack (e.g. i8254). */ mips_timer_ack = null_timer_ack; - /* This sets up the high precision timer for the first interrupt. */ - mips_hpt_init(); - /* * Call board specific timer interrupt setup. * diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 9fda1b8be3a..2a932cada24 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -54,6 +54,8 @@ extern asmlinkage void handle_dbe(void); extern asmlinkage void handle_sys(void); extern asmlinkage void handle_bp(void); extern asmlinkage void handle_ri(void); +extern asmlinkage void handle_ri_rdhwr_vivt(void); +extern asmlinkage void handle_ri_rdhwr(void); extern asmlinkage void handle_cpu(void); extern asmlinkage void handle_ov(void); extern asmlinkage void handle_tr(void); @@ -397,19 +399,6 @@ asmlinkage void do_be(struct pt_regs *regs) force_sig(SIGBUS, current); } -static inline int get_insn_opcode(struct pt_regs *regs, unsigned int *opcode) -{ - unsigned int __user *epc; - - epc = (unsigned int __user *) regs->cp0_epc + - ((regs->cp0_cause & CAUSEF_BD) != 0); - if (!get_user(*opcode, epc)) - return 0; - - force_sig(SIGSEGV, current); - return 1; -} - /* * ll/sc emulation */ @@ -544,8 +533,8 @@ static inline int simulate_llsc(struct pt_regs *regs) { unsigned int opcode; - if (unlikely(get_insn_opcode(regs, &opcode))) - return -EFAULT; + if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + goto out_sigsegv; if ((opcode & OPCODE) == LL) { simulate_ll(regs, opcode); @@ -557,6 +546,10 @@ static inline int simulate_llsc(struct pt_regs *regs) } return -EFAULT; /* Strange things going on ... */ + +out_sigsegv: + force_sig(SIGSEGV, current); + return -EFAULT; } /* @@ -569,8 +562,8 @@ static inline int simulate_rdhwr(struct pt_regs *regs) struct thread_info *ti = task_thread_info(current); unsigned int opcode; - if (unlikely(get_insn_opcode(regs, &opcode))) - return -EFAULT; + if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + goto out_sigsegv; if (unlikely(compute_return_epc(regs))) return -EFAULT; @@ -589,6 +582,10 @@ static inline int simulate_rdhwr(struct pt_regs *regs) /* Not ours. */ return -EFAULT; + +out_sigsegv: + force_sig(SIGSEGV, current); + return -EFAULT; } asmlinkage void do_ov(struct pt_regs *regs) @@ -672,10 +669,8 @@ asmlinkage void do_bp(struct pt_regs *regs) unsigned int opcode, bcode; siginfo_t info; - die_if_kernel("Break instruction in kernel code", regs); - - if (get_insn_opcode(regs, &opcode)) - return; + if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + goto out_sigsegv; /* * There is the ancient bug in the MIPS assemblers that the break @@ -696,6 +691,7 @@ asmlinkage void do_bp(struct pt_regs *regs) switch (bcode) { case BRK_OVERFLOW << 10: case BRK_DIVZERO << 10: + die_if_kernel("Break instruction in kernel code", regs); if (bcode == (BRK_DIVZERO << 10)) info.si_code = FPE_INTDIV; else @@ -705,9 +701,16 @@ asmlinkage void do_bp(struct pt_regs *regs) info.si_addr = (void __user *) regs->cp0_epc; force_sig_info(SIGFPE, &info, current); break; + case BRK_BUG: + die("Kernel bug detected", regs); + break; default: + die_if_kernel("Break instruction in kernel code", regs); force_sig(SIGTRAP, current); } + +out_sigsegv: + force_sig(SIGSEGV, current); } asmlinkage void do_tr(struct pt_regs *regs) @@ -715,10 +718,8 @@ asmlinkage void do_tr(struct pt_regs *regs) unsigned int opcode, tcode = 0; siginfo_t info; - die_if_kernel("Trap instruction in kernel code", regs); - - if (get_insn_opcode(regs, &opcode)) - return; + if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + goto out_sigsegv; /* Immediate versions don't provide a code. */ if (!(opcode & OPCODE)) @@ -733,6 +734,7 @@ asmlinkage void do_tr(struct pt_regs *regs) switch (tcode) { case BRK_OVERFLOW: case BRK_DIVZERO: + die_if_kernel("Trap instruction in kernel code", regs); if (tcode == BRK_DIVZERO) info.si_code = FPE_INTDIV; else @@ -742,9 +744,16 @@ asmlinkage void do_tr(struct pt_regs *regs) info.si_addr = (void __user *) regs->cp0_epc; force_sig_info(SIGFPE, &info, current); break; + case BRK_BUG: + die("Kernel bug detected", regs); + break; default: + die_if_kernel("Trap instruction in kernel code", regs); force_sig(SIGTRAP, current); } + +out_sigsegv: + force_sig(SIGSEGV, current); } asmlinkage void do_ri(struct pt_regs *regs) @@ -1423,6 +1432,15 @@ void __init set_uncached_handler (unsigned long offset, void *addr, unsigned lon memcpy((void *)(uncached_ebase + offset), addr, size); } +static int __initdata rdhwr_noopt; +static int __init set_rdhwr_noopt(char *str) +{ + rdhwr_noopt = 1; + return 1; +} + +__setup("rdhwr_noopt", set_rdhwr_noopt); + void __init trap_init(void) { extern char except_vec3_generic, except_vec3_r4000; @@ -1502,7 +1520,9 @@ void __init trap_init(void) set_except_vector(8, handle_sys); set_except_vector(9, handle_bp); - set_except_vector(10, handle_ri); + set_except_vector(10, rdhwr_noopt ? handle_ri : + (cpu_has_vtag_icache ? + handle_ri_rdhwr_vivt : handle_ri_rdhwr)); set_except_vector(11, handle_cpu); set_except_vector(12, handle_ov); set_except_vector(13, handle_tr); diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index 79f0317d84a..cecff24cc97 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -112,6 +112,7 @@ SECTIONS /* .exit.text is discarded at runtime, not link time, to deal with references from .rodata */ .exit.text : { *(.exit.text) } + .exit.data : { *(.exit.data) } . = ALIGN(_PAGE_SIZE); __initramfs_start = .; .init.ramfs : { *(.init.ramfs) } @@ -139,7 +140,6 @@ SECTIONS /* Sections to be discarded */ /DISCARD/ : { - *(.exit.data) *(.exitcall.exit) /* ABI crap starts here */ diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c index 51ddd216689..666bef484dc 100644 --- a/arch/mips/kernel/vpe.c +++ b/arch/mips/kernel/vpe.c @@ -1179,7 +1179,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer, size_t ret = count; struct vpe *v; - minor = iminor(file->f_dentry->d_inode); + minor = iminor(file->f_path.dentry->d_inode); if ((v = get_vpe(minor)) == NULL) return -ENODEV; |