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author | Gabor Juhos <juhosg@openwrt.org> | 2013-02-04 15:23:08 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2013-02-04 15:23:08 +0000 |
commit | c398e877022f5e76f06e54d4eb0601f166859062 (patch) | |
tree | 98addc02f41d652e39ae1f7afa251108ab606416 /target/linux/leon/patches-2.6.36/009-remove_second_timer.patch | |
parent | 9ada69d709f3406488f57d895fea6c14fac44cf1 (diff) | |
download | master-187ad058-c398e877022f5e76f06e54d4eb0601f166859062.tar.gz master-187ad058-c398e877022f5e76f06e54d4eb0601f166859062.tar.bz2 master-187ad058-c398e877022f5e76f06e54d4eb0601f166859062.zip |
leon: R.I.P.
It is broken since ~9 months and nobody takes care of that.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35488 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/leon/patches-2.6.36/009-remove_second_timer.patch')
-rw-r--r-- | target/linux/leon/patches-2.6.36/009-remove_second_timer.patch | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/target/linux/leon/patches-2.6.36/009-remove_second_timer.patch b/target/linux/leon/patches-2.6.36/009-remove_second_timer.patch deleted file mode 100644 index b0b1346156..0000000000 --- a/target/linux/leon/patches-2.6.36/009-remove_second_timer.patch +++ /dev/null @@ -1,187 +0,0 @@ -From 300f3ee36c3019ee36f81befd91cd1b32544cefe Mon Sep 17 00:00:00 2001 -From: Daniel Hellstrom <daniel@gaisler.com> -Date: Wed, 22 Sep 2010 15:39:05 +0200 -Subject: [PATCH] SPARC/LEON: Removed the need for two timers, per-cpu ticker is shared with system clock timer. - -Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> ---- - arch/sparc/include/asm/leon.h | 2 +- - arch/sparc/include/asm/leon_amba.h | 3 +- - arch/sparc/kernel/entry.S | 3 +- - arch/sparc/kernel/leon_kernel.c | 37 ++++++++--------------------------- - arch/sparc/kernel/leon_smp.c | 8 ++++++- - 5 files changed, 21 insertions(+), 32 deletions(-) - ---- a/arch/sparc/include/asm/leon.h -+++ b/arch/sparc/include/asm/leon.h -@@ -240,7 +240,7 @@ static inline int sparc_leon3_cpuid(void - - #ifdef CONFIG_SMP - # define LEON3_IRQ_RESCHEDULE 13 --# define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].irq) -+# define LEON3_IRQ_TICKER (leon3_gptimer_irq + leon3_gptimer_idx) - # define LEON3_IRQ_CROSS_CALL 15 - #endif - ---- a/arch/sparc/include/asm/leon_amba.h -+++ b/arch/sparc/include/asm/leon_amba.h -@@ -182,11 +182,12 @@ void _amba_init(struct device_node *dp, - - extern struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; - extern struct leon3_gptimer_regs_map *leon3_gptimer_regs; --extern struct amba_apb_device leon_percpu_timer_dev[16]; - extern int leondebug_irq_disable; - extern int leon_debug_irqout; - extern unsigned long leon3_gptimer_irq; -+extern unsigned long leon3_gptimer_idx; /* Timer Index (starting at 0) with Timer Core */ - extern unsigned int sparc_leon_eirq; -+extern unsigned long leon3_cpu_idx; - - #endif /* __ASSEMBLY__ */ - ---- a/arch/sparc/kernel/entry.S -+++ b/arch/sparc/kernel/entry.S -@@ -411,8 +411,9 @@ smpleon_ticker: - WRITE_PAUSE - wr %g2, PSR_ET, %psr - WRITE_PAUSE -+ mov %l7, %o0 ! irq level - call leon_percpu_timer_interrupt -- add %sp, STACKFRAME_SZ, %o0 -+ add %sp, STACKFRAME_SZ, %o1 ! pt_regs - wr %l0, PSR_ET, %psr - WRITE_PAUSE - RESTORE_ALL ---- a/arch/sparc/kernel/leon_kernel.c -+++ b/arch/sparc/kernel/leon_kernel.c -@@ -25,7 +25,6 @@ - - struct leon3_irqctrl_regs_map *leon3_irqctrl_regs = NULL; /* interrupt controller base address, initialized by amba_init() */ - struct leon3_gptimer_regs_map *leon3_gptimer_regs = NULL; /* timer controller base address, initialized by amba_init() */ --struct amba_apb_device leon_percpu_timer_dev[16]; - - int leondebug_irq_disable; - int leon_debug_irqout; -@@ -34,6 +33,7 @@ static int dummy_master_l10_counter; - unsigned long leon3_gptimer_irq = 0; /* interrupt controller irq number, initialized by amba_init() */ - unsigned long leon3_gptimer_idx = 0; /* Timer Index (starting at 0) with Timer Core */ - unsigned int sparc_leon_eirq; -+unsigned long leon3_cpu_idx = 0; /* Boot CPU Index */ - #define LEON_IMASK ((&leon3_irqctrl_regs->mask[0])) - - /* Return the IRQ of the pending IRQ on the extended IRQ controller */ -@@ -109,13 +109,14 @@ void __init leon_init_timers(irq_handler - struct device_node *rootnp, *np; - struct property *pp; - int len; -- int cpu, icsel; -+ int icsel; - int ampopts; - - leondebug_irq_disable = 0; - leon_debug_irqout = 0; - master_l10_counter = (unsigned int *)&dummy_master_l10_counter; - dummy_master_l10_counter = 0; -+ leon3_cpu_idx = sparc_leon3_cpuid(); - - /* Find IRQMP IRQ Controller Registers base address otherwise bail out. */ - rootnp = of_find_node_by_path("/ambapp0"); -@@ -152,21 +153,11 @@ void __init leon_init_timers(irq_handler - (((1000000 / HZ) - 1))); - LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].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+leon3_gptimer_idx; -- - if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) & - (1<<LEON3_GPTIMER_SEPIRQ))) { -- prom_printf("irq timer not configured with separate irqs\n"); -- BUG(); -+ prom_printf("LEON-SMP: GPTIMER use shared irqs, using other timers will fail.\n"); - } - -- LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].val, 0); -- LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].rld, (((1000000 / HZ) - 1))); -- LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, 0); --# endif -- - /* The IRQ controller may (if implemented) consist of multiple - * IRQ controllers, each mapped on a 4Kb boundary. - * Each CPU may be routed to different IRQCTRLs, however -@@ -175,9 +166,8 @@ void __init leon_init_timers(irq_handler - * accessed anyway. - * In AMP systems, Linux may not be run on CPU0. - */ -- cpu = sparc_leon3_cpuid(); -- icsel = LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->icsel[cpu/8]); -- icsel = (icsel >> ((7 - (cpu&0x7)) * 4)) & 0xf; -+ icsel = LEON3_BYPASS_LOAD_PA(&leon3_irqctrl_regs->icsel[leon3_cpu_idx/8]); -+ icsel = (icsel >> ((7 - (leon3_cpu_idx & 0x7)) * 4)) & 0xf; - leon3_irqctrl_regs += icsel; - - LEON3_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mask[0]), 0); -@@ -204,7 +194,8 @@ void __init leon_init_timers(irq_handler - # ifdef CONFIG_SMP - { - unsigned long flags; -- struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_percpu_timer_dev[0].irq - 1)]; -+ struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + -+ (leon3_gptimer_irq + leon3_gptimer_idx - 1)]; - - /* For SMP we use the level 14 ticker, however the bootup code - * has copied the firmwares level 14 vector into boot cpu's -@@ -222,21 +213,11 @@ void __init leon_init_timers(irq_handler - } - # endif - -- if (leon3_gptimer_regs) { -- LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, -+ LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, - LEON3_GPTIMER_EN | - LEON3_GPTIMER_RL | - LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN); - --#ifdef CONFIG_SMP -- LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl, -- LEON3_GPTIMER_EN | -- LEON3_GPTIMER_RL | -- LEON3_GPTIMER_LD | -- LEON3_GPTIMER_IRQEN); --#endif -- -- } - } - - void leon_clear_clock_irq(void) ---- a/arch/sparc/kernel/leon_smp.c -+++ b/arch/sparc/kernel/leon_smp.c -@@ -52,6 +52,7 @@ extern volatile unsigned long cpu_callin - extern unsigned char boot_cpu_id; - extern cpumask_t smp_commenced_mask; - void __init leon_configure_cache_smp(void); -+extern void handler_irq(int irq, struct pt_regs * regs); - - static inline unsigned long do_swap(volatile unsigned long *ptr, - unsigned long val) -@@ -385,7 +386,7 @@ void leon_cross_call_irq(void) - ccall_info.processors_out[i] = 1; - } - --void leon_percpu_timer_interrupt(struct pt_regs *regs) -+void leon_percpu_timer_interrupt(int irq, struct pt_regs *regs) - { - struct pt_regs *old_regs; - int cpu = smp_processor_id(); -@@ -406,6 +407,11 @@ void leon_percpu_timer_interrupt(struct - prof_counter(cpu) = prof_multiplier(cpu); - } - set_irq_regs(old_regs); -+ -+ if ( cpu == leon3_cpu_idx ) { -+ /* Ticker Clock is shared with the System Clock */ -+ handler_irq(irq, regs); -+ } - } - - static void __init smp_setup_percpu_timer(void) |