008-34Kc-MT-platform-specific-changes.patch

Index: linux/arch/mips/kernel/irq_cpu.c
===================================================================
--- linux.orig/arch/mips/kernel/irq_cpu.c   2010-04-02 04:29:14.000000000 +0530
+++ linux/arch/mips/kernel/irq_cpu.c    2010-11-02 15:17:42.917480000 +0530
@@ -69,8 +69,13 @@
    unsigned int vpflags = dvpe();

    clear_c0_cause(0x100 << (irq - MIPS_CPU_IRQ_BASE));
+#if !(defined(CONFIG_AR9) || defined(CONFIG_VR9))
    evpe(vpflags);
+#endif
    unmask_mips_mt_irq(irq);
+#if defined(CONFIG_AR9) || defined(CONFIG_VR9)
+   evpe(vpflags);
+#endif

    return 0;
 }
@@ -115,7 +120,13 @@
            set_irq_chip_and_handler(i, &mips_mt_cpu_irq_controller,
                         handle_percpu_irq);

+/* Avoid reinitialisation of the 6 hardware interrupts incase of AR9 and VR9 platfoms
+   incase of Danube/ASE initialises 6 hw interrupt.
+   Need to Check ??
+*/
+#if !(defined(CONFIG_AR9) || defined(CONFIG_VR9))
    for (i = irq_base + 2; i < irq_base + 8; i++)
        set_irq_chip_and_handler(i, &mips_cpu_irq_controller,
                     handle_percpu_irq);
+#endif
 }
Index: linux/arch/mips/kernel/smtc.c
===================================================================
--- linux.orig/arch/mips/kernel/smtc.c  2010-10-31 23:39:29.000000000 +0530
+++ linux/arch/mips/kernel/smtc.c   2010-11-02 15:49:10.164401000 +0530
@@ -503,10 +503,17 @@
             * Clear ERL/EXL of VPEs other than 0
             * and set restricted interrupt enable/mask.
             */
+
+#if defined(CONFIG_AR9) || defined(CONFIG_VR9)  // Enable IE and IM bits for all the intr lines.
+                        write_vpe_c0_status((read_vpe_c0_status()
+                                & ~(ST0_BEV | ST0_ERL | ST0_EXL))
+                                | (ST0_IM | ST0_IE));
+#else
            write_vpe_c0_status((read_vpe_c0_status()
                & ~(ST0_BEV | ST0_ERL | ST0_EXL | ST0_IM))
                | (STATUSF_IP0 | STATUSF_IP1 | STATUSF_IP7
                | ST0_IE));
+#endif
            /*
             * set config to be the same as vpe0,
             *  particularly kseg0 coherency alg
Index: linux/arch/mips/kernel/traps.c
===================================================================
--- linux.orig/arch/mips/kernel/traps.c 2010-04-02 04:29:14.000000000 +0530
+++ linux/arch/mips/kernel/traps.c  2010-11-02 15:51:40.786351000 +0530
@@ -1237,7 +1237,11 @@
    die("NMI", regs);
 }

+#if defined(CONFIG_AR9) || defined(CONFIG_VR9)
+#define VECTORSPACING 0x200     /* for EI/VI mode */
+#else
 #define VECTORSPACING 0x100    /* for EI/VI mode */
+#endif

 unsigned long ebase;
 unsigned long exception_handlers[32];
Index: linux/include/linux/skbuff.h
===================================================================
--- linux.orig/include/linux/skbuff.h   2010-10-31 23:39:18.000000000 +0530
+++ linux/include/linux/skbuff.h    2010-11-02 15:55:08.272255000 +0530
@@ -1389,8 +1389,12 @@
  * and wireless, but only for new allocations
  */
 #ifndef NET_SKB_PAD
+#if defined (CONFIG_AR9) || defined (CONFIG_VR9)
+#define NET_SKB_PAD     64
+#else
 #define NET_SKB_PAD    32
 #endif
+#endif

 #ifndef NET_SKB_PAD_ALLOC
 #define NET_SKB_PAD_ALLOC  64
Index: linux/arch/mips/kernel/smp-mt.c
===================================================================
--- linux.orig/arch/mips/kernel/smp-mt.c    2010-04-02 04:29:14.000000000 +0530
+++ linux/arch/mips/kernel/smp-mt.c 2010-11-02 16:25:59.000389000 +0530
@@ -157,9 +157,14 @@
    if (gic_present)
        change_c0_status(ST0_IM, STATUSF_IP3 | STATUSF_IP4 |
                     STATUSF_IP6 | STATUSF_IP7);
-   else
+   else {
+#if defined(CONFIG_AR9) || defined(CONFIG_VR9)
+       set_c0_status(ST0_IM); //enable all the interrupt lines.
+#else
        change_c0_status(ST0_IM, STATUSF_IP0 | STATUSF_IP1 |
                     STATUSF_IP6 | STATUSF_IP7);
+#endif
+   }
 }

 static void __cpuinit vsmp_smp_finish(void)
Index: linux/arch/mips/kernel/irq_cpu.c
===================================================================
--- linux.orig/arch/mips/kernel/irq_cpu.c   2010-11-11 16:25:37.000000000 +0530
+++ linux/arch/mips/kernel/irq_cpu.c    2010-11-11 17:42:06.568891000 +0530
@@ -48,6 +48,7 @@
    irq_disable_hazard();
 }

+#if !(defined(CONFIG_AR9) || defined(CONFIG_VR9))
 static struct irq_chip mips_cpu_irq_controller = {
    .name       = "MIPS",
    .ack        = mask_mips_irq,
@@ -56,6 +57,7 @@
    .unmask     = unmask_mips_irq,
    .eoi        = unmask_mips_irq,
 };
+#endif

 /*
  * Basically the same as above but taking care of all the MT stuff
Index: linux/arch/mips/kernel/irq_cpu.c
===================================================================
--- linux.orig/arch/mips/kernel/irq_cpu.c   2010-11-12 16:12:13.000000000 +0530
+++ linux/arch/mips/kernel/irq_cpu.c    2010-11-12 16:26:35.972726000 +0530
@@ -36,6 +36,10 @@
 #include <asm/mipsmtregs.h>
 #include <asm/system.h>

+#if defined(CONFIG_AR9) || defined(CONFIG_VR9)
+#include <asm/ifx/irq.h>
+#endif
+
 static inline void unmask_mips_irq(unsigned int irq)
 {
    set_c0_status(0x100 << (irq - MIPS_CPU_IRQ_BASE));
Index: linux/arch/mips/kernel/vpe.c
===================================================================
--- linux.orig/arch/mips/kernel/vpe.c   2010-11-12 16:12:13.000000000 +0530
+++ linux/arch/mips/kernel/vpe.c    2010-11-12 16:28:31.506724000 +0530
@@ -1874,9 +1874,10 @@

                goto out_reenable;
            }
-
            v->ntcs = hw_tcs - tclimit;

+           write_tc_c0_tcbind((read_tc_c0_tcbind() & ~TCBIND_CURVPE) | 1);
+
            /* add the tc to the list of this vpe's tc's. */
            list_add(&t->tc, &v->tc);