MIPS: Netlogic: Support for multi-chip configuration

Upto 4 Netlogic XLP SoCs can be connected over ICI links to form a
coherent multi-node system.  Each SoC has its own set of on-chip
devices including PIC.  To support this, add a per SoC stucture and
use it for the PIC and SYS block addresses instead of using global
variables.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4469
Signed-off-by: John Crispin <blogic@openwrt.org>

1 files changed, 19 insertions, 2 deletions

diff --git a/arch/mips/netlogic/xlr/wakeup.c b/arch/mips/netlogic/xlr/wakeup.c
index 0878924da153..3ebf7411d67b 100644
--- a/arch/mips/netlogic/xlr/wakeup.c
+++ b/arch/mips/netlogic/xlr/wakeup.c
@@ -33,6 +33,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/delay.h>
 #include <linux/threads.h>
 
 #include <asm/asm.h>
@@ -50,18 +51,34 @@
 
 int __cpuinit xlr_wakeup_secondary_cpus(void)
 {
-        unsigned int i, boot_cpu;
+        struct nlm_soc_info *nodep;
+        unsigned int i, j, boot_cpu;
 
         /*
          *  In case of RMI boot, hit with NMI to get the cores
          *  from bootloader to linux code.
          */
+        nodep = nlm_get_node(0);
         boot_cpu = hard_smp_processor_id();
         nlm_set_nmi_handler(nlm_rmiboot_preboot);
         for (i = 0; i < NR_CPUS; i++) {
                 if (i == boot_cpu || !cpumask_test_cpu(i, &nlm_cpumask))
                         continue;
-                nlm_pic_send_ipi(nlm_pic_base, i, 1, 1); /* send NMI */
+                nlm_pic_send_ipi(nodep->picbase, i, 1, 1); /* send NMI */
+        }
+
+        /* Fill up the coremask early */
+        nodep->coremask = 1;
+        for (i = 1; i < NLM_CORES_PER_NODE; i++) {
+                for (j = 1000000; j > 0; j--) {
+                        if (nlm_cpu_ready[i * NLM_THREADS_PER_CORE])
+                                break;
+                        udelay(10);
+                }
+                if (j != 0)
+                        nodep->coremask |= (1u << i);
+                else
+                        pr_err("Failed to wakeup core %d\n", i);
         }
 
         return 0;