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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 15:48:23 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 15:48:23 (GMT) |
commit | ee1262dbc65ce0b6234a915d8432171e8d77f518 (patch) | |
tree | 3a4003800d170de691b2e6a9c93c0ca6795678bf /arch/sparc/kernel/leon_kernel.c | |
parent | a421018e8c10e5593a1fee076af72a66c3fe8ca3 (diff) | |
parent | 7f5620a5fcd658f219e85831d3691908f1eccbde (diff) | |
download | linux-ee1262dbc65ce0b6234a915d8432171e8d77f518.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6:
sparc: Set UTS_MACHINE correctly.
sparc,leon: init_leon srmmu cleanup
sparc32: Remove early interrupt enable.
sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structure
sparc64: Faster early-boot framebuffer console.
Revert "sparc: Make atomic locks raw"
sparc: remove unused nfsd #includes
sparc: Fixup last users of irq_chip->typename
Added sparc_leon3_snooping_enabled() and converted extern inline to static inline
No auxio on LEON
apbuart: Use of_find_node_by_path to find root node.
sparc: Replace old style lock initializer
sparc: Make atomic locks raw
apbuart: Fix build and missing driver unregister.
apbuart: Kill dependency on deprecated Sparc-only PROM interfaces.
apbuart: Fix build warning.
sparc: Support for GRLIB APBUART serial port
watchdog: Remove BKL from rio watchdog driver
sparc: Remove BKL from apc
sparc,leon: Sparc-Leon SMP support
Diffstat (limited to 'arch/sparc/kernel/leon_kernel.c')
-rw-r--r-- | arch/sparc/kernel/leon_kernel.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index 54d8a5b..87f1760 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; |