diff options
Diffstat (limited to 'arch/sh/kernel')
| -rw-r--r-- | arch/sh/kernel/cf-enabler.c | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/clock.c | 7 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/irq/maskreg.c | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh4/fpu.c | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh4/setup-sh7750.c | 2 | ||||
| -rw-r--r-- | arch/sh/kernel/cpu/sh4a/clock-sh7722.c | 34 | ||||
| -rw-r--r-- | arch/sh/kernel/kgdb_stub.c | 4 | ||||
| -rw-r--r-- | arch/sh/kernel/process.c | 33 | ||||
| -rw-r--r-- | arch/sh/kernel/syscalls.S | 3 | ||||
| -rw-r--r-- | arch/sh/kernel/traps.c | 13 |
10 files changed, 78 insertions, 24 deletions
diff --git a/arch/sh/kernel/cf-enabler.c b/arch/sh/kernel/cf-enabler.c index 0758d48147a..849a9e19139 100644 --- a/arch/sh/kernel/cf-enabler.c +++ b/arch/sh/kernel/cf-enabler.c @@ -31,7 +31,7 @@ */ #if defined(CONFIG_CPU_SH4) /* SH4 can't access PCMCIA interface through P2 area. - * we must remap it with appropreate attribute bit of the page set. + * we must remap it with appropriate attribute bit of the page set. * this part is based on Greg Banks' hd64465_ss.c implementation - Masahiro Abe */ #if defined(CONFIG_CF_AREA6) diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c index 014f318f5a0..63251549e9a 100644 --- a/arch/sh/kernel/cpu/clock.c +++ b/arch/sh/kernel/cpu/clock.c @@ -278,6 +278,11 @@ arch_init_clk_ops(struct clk_ops **ops, int type) { } +void __init __attribute__ ((weak)) +arch_clk_init(void) +{ +} + static int show_clocks(char *buf, char **start, off_t off, int len, int *eof, void *data) { @@ -314,6 +319,8 @@ int __init clk_init(void) ret |= clk_register(clk); } + arch_clk_init(); + /* Kick the child clocks.. */ propagate_rate(&master_clk); propagate_rate(&bus_clk); diff --git a/arch/sh/kernel/cpu/irq/maskreg.c b/arch/sh/kernel/cpu/irq/maskreg.c index 492db31b3ca..978992e367a 100644 --- a/arch/sh/kernel/cpu/irq/maskreg.c +++ b/arch/sh/kernel/cpu/irq/maskreg.c @@ -38,7 +38,7 @@ static struct hw_interrupt_type maskreg_irq_type = { .end = end_maskreg_irq }; -/* actual implementatin */ +/* actual implementation */ static unsigned int startup_maskreg_irq(unsigned int irq) { enable_maskreg_irq(irq); diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c index d61dd599169..c5a4fc77fa0 100644 --- a/arch/sh/kernel/cpu/sh4/fpu.c +++ b/arch/sh/kernel/cpu/sh4/fpu.c @@ -138,7 +138,7 @@ restore_fpu(struct task_struct *tsk) /* * Load the FPU with signalling NANS. This bit pattern we're using * has the property that no matter wether considered as single or as - * double precission represents signaling NANS. + * double precision represents signaling NANS. */ static void diff --git a/arch/sh/kernel/cpu/sh4/setup-sh7750.c b/arch/sh/kernel/cpu/sh4/setup-sh7750.c index 6f8f458912c..03b14cf78dd 100644 --- a/arch/sh/kernel/cpu/sh4/setup-sh7750.c +++ b/arch/sh/kernel/cpu/sh4/setup-sh7750.c @@ -106,6 +106,7 @@ static struct ipr_data sh7750_ipr_map[] = { { 38, 2, 8, 7 }, /* DMAC DMAE */ }; +#ifdef CONFIG_CPU_SUBTYPE_SH7751 static struct ipr_data sh7751_ipr_map[] = { { 44, 2, 8, 7 }, /* DMAC DMTE4 */ { 45, 2, 8, 7 }, /* DMAC DMTE5 */ @@ -117,6 +118,7 @@ static struct ipr_data sh7751_ipr_map[] = { /*{ 72, INTPRI00, 8, ? },*/ /* TMU3 TUNI */ /*{ 76, INTPRI00, 12, ? },*/ /* TMU4 TUNI */ }; +#endif static unsigned long ipr_offsets[] = { 0xffd00004UL, /* 0: IPRA */ diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c index 29090035bc5..51b386d454d 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh7722.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7722.c @@ -17,7 +17,6 @@ #include <asm/clock.h> #include <asm/freq.h> -#define SH7722_PLL_FREQ (32000000/8) #define N (-1) #define NM (-2) #define ROUND_NEAREST 0 @@ -141,28 +140,36 @@ static void adjust_clocks(int originate, int *l, unsigned long v[], */ static int divisors2[] = { 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40 }; +static void master_clk_recalc(struct clk *clk) +{ + unsigned frqcr = ctrl_inl(FRQCR); + + clk->rate = CONFIG_SH_PCLK_FREQ * (((frqcr >> 24) & 0x1f) + 1); +} + static void master_clk_init(struct clk *clk) { - clk_set_rate(clk, clk_get_rate(clk)); + clk->parent = NULL; + clk->flags |= CLK_RATE_PROPAGATES; + clk->rate = CONFIG_SH_PCLK_FREQ; + master_clk_recalc(clk); } -static void master_clk_recalc(struct clk *clk) + +static void module_clk_recalc(struct clk *clk) { unsigned long frqcr = ctrl_inl(FRQCR); - clk->rate = CONFIG_SH_PCLK_FREQ * (1 + (frqcr >> 24 & 0xF)); + clk->rate = clk->parent->rate / (((frqcr >> 24) & 0x1f) + 1); } static int master_clk_setrate(struct clk *clk, unsigned long rate, int id) { - int div = rate / SH7722_PLL_FREQ; + int div = rate / clk->rate; int master_divs[] = { 2, 3, 4, 6, 8, 16 }; int index; unsigned long frqcr; - if (rate < SH7722_PLL_FREQ * 2) - return -EINVAL; - for (index = 1; index < ARRAY_SIZE(master_divs); index++) if (div >= master_divs[index - 1] && div < master_divs[index]) break; @@ -185,6 +192,10 @@ static struct clk_ops sh7722_master_clk_ops = { .set_rate = master_clk_setrate, }; +static struct clk_ops sh7722_module_clk_ops = { + .recalc = module_clk_recalc, +}; + struct frqcr_context { unsigned mask; unsigned shift; @@ -489,7 +500,7 @@ static void sh7722_siu_recalc(struct clk *clk) if (siu < 0) return /* siu */ ; - BUG_ON(siu > 1); + BUG_ON(siu > 2); r = ctrl_inl(sh7722_siu_regs[siu]); clk->rate = clk->parent->rate * 2 / divisors2[r & 0xF]; } @@ -571,7 +582,7 @@ static struct clk *sh7722_clocks[] = { */ struct clk_ops *onchip_ops[] = { &sh7722_master_clk_ops, - &sh7722_frqcr_clk_ops, + &sh7722_module_clk_ops, &sh7722_frqcr_clk_ops, &sh7722_frqcr_clk_ops, }; @@ -583,7 +594,7 @@ arch_init_clk_ops(struct clk_ops **ops, int type) *ops = onchip_ops[type]; } -int __init sh7722_clock_init(void) +int __init arch_clk_init(void) { struct clk *master; int i; @@ -597,4 +608,3 @@ int __init sh7722_clock_init(void) clk_put(master); return 0; } -arch_initcall(sh7722_clock_init); diff --git a/arch/sh/kernel/kgdb_stub.c b/arch/sh/kernel/kgdb_stub.c index a5323364cbc..edd1ec214e6 100644 --- a/arch/sh/kernel/kgdb_stub.c +++ b/arch/sh/kernel/kgdb_stub.c @@ -2,7 +2,7 @@ * May be copied or modified under the terms of the GNU General Public * License. See linux/COPYING for more information. * - * Containes extracts from code by Glenn Engel, Jim Kingdon, + * Contains extracts from code by Glenn Engel, Jim Kingdon, * David Grothe <dave@gcom.com>, Tigran Aivazian <tigran@sco.com>, * Amit S. Kale <akale@veritas.com>, William Gatliff <bgat@open-widgets.com>, * Ben Lee, Steve Chamberlain and Benoit Miller <fulg@iname.com>. @@ -85,7 +85,7 @@ * * Responses can be run-length encoded to save space. A '*' means that * the next character is an ASCII encoding giving a repeat count which - * stands for that many repititions of the character preceding the '*'. + * stands for that many repetitions of the character preceding the '*'. * The encoding is n+29, yielding a printable character where n >=3 * (which is where RLE starts to win). Don't use an n > 126. * diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c index 6b4f5748d0b..a11e2aa73cb 100644 --- a/arch/sh/kernel/process.c +++ b/arch/sh/kernel/process.c @@ -26,8 +26,6 @@ static int hlt_counter; int ubc_usercnt = 0; -#define HARD_IDLE_TIMEOUT (HZ / 3) - void (*pm_idle)(void); void (*pm_power_off)(void); EXPORT_SYMBOL(pm_power_off); @@ -44,16 +42,39 @@ void enable_hlt(void) } EXPORT_SYMBOL(enable_hlt); +static int __init nohlt_setup(char *__unused) +{ + hlt_counter = 1; + return 1; +} +__setup("nohlt", nohlt_setup); + +static int __init hlt_setup(char *__unused) +{ + hlt_counter = 0; + return 1; +} +__setup("hlt", hlt_setup); + void default_idle(void) { - if (!hlt_counter) - cpu_sleep(); - else - cpu_relax(); + if (!hlt_counter) { + clear_thread_flag(TIF_POLLING_NRFLAG); + smp_mb__after_clear_bit(); + set_bl_bit(); + while (!need_resched()) + cpu_sleep(); + clear_bl_bit(); + set_thread_flag(TIF_POLLING_NRFLAG); + } else + while (!need_resched()) + cpu_relax(); } void cpu_idle(void) { + set_thread_flag(TIF_POLLING_NRFLAG); + /* endless idle loop with no priority at all */ while (1) { void (*idle)(void) = pm_idle; diff --git a/arch/sh/kernel/syscalls.S b/arch/sh/kernel/syscalls.S index 4357d1a6358..7db1c2dc599 100644 --- a/arch/sh/kernel/syscalls.S +++ b/arch/sh/kernel/syscalls.S @@ -355,3 +355,6 @@ ENTRY(sys_call_table) .long sys_getcpu .long sys_epoll_pwait .long sys_utimensat /* 320 */ + .long sys_signalfd + .long sys_timerfd + .long sys_eventfd diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c index 3a197649cd8..5b75cb6f8f9 100644 --- a/arch/sh/kernel/traps.c +++ b/arch/sh/kernel/traps.c @@ -21,6 +21,7 @@ #include <linux/bug.h> #include <linux/debug_locks.h> #include <linux/kdebug.h> +#include <linux/kexec.h> #include <linux/limits.h> #include <asm/system.h> #include <asm/uaccess.h> @@ -101,6 +102,16 @@ void die(const char * str, struct pt_regs * regs, long err) bust_spinlocks(0); spin_unlock_irq(&die_lock); + + if (kexec_should_crash(current)) + crash_kexec(regs); + + if (in_interrupt()) + panic("Fatal exception in interrupt"); + + if (panic_on_oops) + panic("Fatal exception"); + do_exit(SIGSEGV); } @@ -513,7 +524,7 @@ static int handle_unaligned_access(u16 instruction, struct pt_regs *regs) * misaligned data access * access to >= 0x80000000 is user mode * Unfortuntaly we can't distinguish between instruction address error - * and data address errors caused by read acceses. + * and data address errors caused by read accesses. */ asmlinkage void do_address_error(struct pt_regs *regs, unsigned long writeaccess, |