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[PATCH 07/18] MIPS: Netlogic: Core wakeup improvements

To: linux-mips@linux-mips.org
Subject: [PATCH 07/18] MIPS: Netlogic: Core wakeup improvements
From: "Jayachandran C" <jchandra@broadcom.com>
Date: Mon, 14 Oct 2013 18:51:03 +0530
Cc: "Jayachandran C" <jchandra@broadcom.com>, ralf@linux-mips.org
In-reply-to: <1381756874-22616-1-git-send-email-jchandra@broadcom.com>
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Move wakeup to after early console. This will allow us to display error
messages when cores are not woken up.  Also reduce the wait time for core
to come up.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
---
 arch/mips/netlogic/xlp/setup.c  |   14 ++++++++------
 arch/mips/netlogic/xlp/wakeup.c |    8 +++++---
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index 76a7131..bf3fdef 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -92,6 +92,14 @@ static void __init xlp_init_mem_from_bars(void)
 
 void __init plat_mem_setup(void)
 {
+#ifdef CONFIG_SMP
+       nlm_wakeup_secondary_cpus();
+
+       /* update TLB size after waking up threads */
+       current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
+
+       register_smp_ops(&nlm_smp_ops);
+#endif
        panic_timeout   = 5;
        _machine_restart = (void (*)(char *))nlm_linux_exit;
        _machine_halt   = nlm_linux_exit;
@@ -163,11 +171,5 @@ void __init prom_init(void)
 
 #ifdef CONFIG_SMP
        cpumask_setall(&nlm_cpumask);
-       nlm_wakeup_secondary_cpus();
-
-       /* update TLB size after waking up threads */
-       current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
-
-       register_smp_ops(&nlm_smp_ops);
 #endif
 }
diff --git a/arch/mips/netlogic/xlp/wakeup.c b/arch/mips/netlogic/xlp/wakeup.c
index 1011577..055dc17 100644
--- a/arch/mips/netlogic/xlp/wakeup.c
+++ b/arch/mips/netlogic/xlp/wakeup.c
@@ -84,7 +84,7 @@ static int wait_for_cpus(int cpu, int bootcpu)
        volatile uint32_t *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY);
        int i, count, notready;
 
-       count = 0x20000000;
+       count = 0x800000;
        do {
                notready = nlm_threads_per_core;
                for (i = 0; i < nlm_threads_per_core; i++)
@@ -162,7 +162,8 @@ static void xlp_enable_secondary_cores(const cpumask_t 
*wakeup_mask)
                        nodep->coremask |= 1u << core;
 
                        /* spin until the hw threads sets their ready */
-                       wait_for_cpus(cpu, 0);
+                       if (!wait_for_cpus(cpu, 0))
+                               pr_err("Node %d : timeout core %d\n", n, core);
                }
        }
 }
@@ -174,7 +175,8 @@ void xlp_wakeup_secondary_cpus()
         * first wakeup core 0 threads
         */
        xlp_boot_core0_siblings();
-       wait_for_cpus(0, 0);
+       if (!wait_for_cpus(0, 0))
+               pr_err("Node 0 : timeout core 0\n");
 
        /* now get other cores out of reset */
        xlp_enable_secondary_cores(&nlm_cpumask);
-- 
1.7.9.5



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