1 files changed, 20 insertions, 74 deletions

diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index e8cdf715a546..faf9ccd9ef5d 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -20,11 +20,7 @@
 #include <asm/memreg.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
-#ifdef CONFIG_SUN4
-#include <asm/pgtsun4.h>
-#else
 #include <asm/pgtsun4c.h>
-#endif
 #include <asm/winmacro.h>
 #include <asm/signal.h>
 #include <asm/obio.h>
@@ -276,17 +272,18 @@ smp4m_ticker:
          */
 maybe_smp4m_msg:
         GET_PROCESSOR4M_ID(o3)
-        set     sun4m_interrupts, %l5
-        ld      [%l5], %o5
+        sethi   %hi(sun4m_irq_percpu), %l5
+        sll     %o3, 2, %o3
+        or      %l5, %lo(sun4m_irq_percpu), %o5
         sethi   %hi(0x40000000), %o2
-        sll     %o3, 12, %o3
         ld      [%o5 + %o3], %o1
-        andcc   %o1, %o2, %g0
+        ld      [%o1 + 0x00], %o3       ! sun4m_irq_percpu[cpu]->pending
+        andcc   %o3, %o2, %g0
         be,a    smp4m_ticker
          cmp    %l7, 14
-        st      %o2, [%o5 + 0x4]
+        st      %o2, [%o1 + 0x04]       ! sun4m_irq_percpu[cpu]->clear=0x40000000
         WRITE_PAUSE
-        ld      [%o5], %g0
+        ld      [%o1 + 0x00], %g0       ! sun4m_irq_percpu[cpu]->pending
         WRITE_PAUSE
         or      %l0, PSR_PIL, %l4
         wr      %l4, 0x0, %psr
@@ -304,16 +301,16 @@ linux_trap_ipi15_sun4m:
         SAVE_ALL
         sethi   %hi(0x80000000), %o2
         GET_PROCESSOR4M_ID(o0)
-        set     sun4m_interrupts, %l5
-        ld      [%l5], %o5
-        sll     %o0, 12, %o0
-        add     %o5, %o0, %o5
-        ld      [%o5], %o3
+        sethi   %hi(sun4m_irq_percpu), %l5
+        or      %l5, %lo(sun4m_irq_percpu), %o5
+        sll     %o0, 2, %o0
+        ld      [%o5 + %o0], %o5
+        ld      [%o5 + 0x00], %o3       ! sun4m_irq_percpu[cpu]->pending
         andcc   %o3, %o2, %g0
         be      1f                      ! Must be an NMI async memory error
-         st     %o2, [%o5 + 4]
+         st     %o2, [%o5 + 0x04]       ! sun4m_irq_percpu[cpu]->clear=0x80000000
         WRITE_PAUSE
-        ld      [%o5], %g0
+        ld      [%o5 + 0x00], %g0       ! sun4m_irq_percpu[cpu]->pending
         WRITE_PAUSE
         or      %l0, PSR_PIL, %l4
         wr      %l4, 0x0, %psr
@@ -327,12 +324,11 @@ linux_trap_ipi15_sun4m:
 1:
         /* NMI async memory error handling. */
         sethi   %hi(0x80000000), %l4
-        sethi   %hi(0x4000), %o3
-        sub     %o5, %o0, %o5
-        add     %o5, %o3, %l5
-        st      %l4, [%l5 + 0xc]
+        sethi   %hi(sun4m_irq_global), %o5
+        ld      [%o5 + %lo(sun4m_irq_global)], %l5
+        st      %l4, [%l5 + 0x0c]       ! sun4m_irq_global->mask_set=0x80000000
         WRITE_PAUSE
-        ld      [%l5], %g0
+        ld      [%l5 + 0x00], %g0       ! sun4m_irq_global->pending
         WRITE_PAUSE
         or      %l0, PSR_PIL, %l4
         wr      %l4, 0x0, %psr
@@ -341,9 +337,9 @@ linux_trap_ipi15_sun4m:
         WRITE_PAUSE
         call    sun4m_nmi
          nop
-        st      %l4, [%l5 + 0x8]
+        st      %l4, [%l5 + 0x08]       ! sun4m_irq_global->mask_clear=0x80000000
         WRITE_PAUSE
-        ld      [%l5], %g0
+        ld      [%l5 + 0x00], %g0       ! sun4m_irq_global->pending
         WRITE_PAUSE
         RESTORE_ALL
 
@@ -775,11 +771,7 @@ vac_linesize_patch_32:		subcc	%l7, 32, %l7
  * Ugly, but we cant use hardware flushing on the sun4 and we'd require
  * two instructions (Anton)
  */
-#ifdef CONFIG_SUN4
-vac_hwflush_patch1_on:          nop
-#else
 vac_hwflush_patch1_on:          addcc   %l7, -PAGE_SIZE, %l7
-#endif
 
 vac_hwflush_patch2_on:          sta     %g0, [%l3 + %l7] ASI_HWFLUSHSEG
 
@@ -798,42 +790,10 @@ vac_hwflush_patch2_on:		sta	%g0, [%l3 + %l7] ASI_HWFLUSHSEG
 ! %l7 = 1 for textfault
 ! We want error in %l5, vaddr in %l6
 sun4c_fault:
-#ifdef CONFIG_SUN4
-        sethi   %hi(sun4c_memerr_reg), %l4
-        ld      [%l4+%lo(sun4c_memerr_reg)], %l4  ! memerr ctrl reg addr
-        ld      [%l4], %l6              ! memerr ctrl reg
-        ld      [%l4 + 4], %l5          ! memerr vaddr reg
-        andcc   %l6, 0x80, %g0          ! check for error type
-        st      %g0, [%l4 + 4]          ! clear the error
-        be      0f                      ! normal error
-         sethi  %hi(AC_BUS_ERROR), %l4  ! bus err reg addr
-
-        call    prom_halt       ! something weird happened
-                                        ! what exactly did happen?
-                                        ! what should we do here?
-
-0:      or      %l4, %lo(AC_BUS_ERROR), %l4     ! bus err reg addr
-        lduba   [%l4] ASI_CONTROL, %l6  ! bus err reg
-
-        cmp    %l7, 1                   ! text fault?
-        be      1f                      ! yes
-         nop
-
-        ld     [%l1], %l4               ! load instruction that caused fault
-        srl     %l4, 21, %l4
-        andcc   %l4, 1, %g0             ! store instruction?
-
-        be      1f                      ! no
-         sethi  %hi(SUN4C_SYNC_BADWRITE), %l4 ! yep
-                                        ! %lo(SUN4C_SYNC_BADWRITE) = 0
-        or      %l4, %l6, %l6           ! set write bit to emulate sun4c
-1:
-#else
         sethi   %hi(AC_SYNC_ERR), %l4
         add     %l4, 0x4, %l6                   ! AC_SYNC_VA in %l6
         lda     [%l6] ASI_CONTROL, %l5          ! Address
         lda     [%l4] ASI_CONTROL, %l6          ! Error, retained for a bit
-#endif
 
         andn    %l5, 0xfff, %l5                 ! Encode all info into l7
         srl     %l6, 14, %l4
@@ -880,12 +840,7 @@ sun4c_fault:
         or      %l4, %lo(swapper_pg_dir), %l4
         sll     %l6, 2, %l6
         ld      [%l4 + %l6], %l4
-#ifdef CONFIG_SUN4
-        sethi   %hi(PAGE_MASK), %l6
-        andcc   %l4, %l6, %g0
-#else
         andcc   %l4, PAGE_MASK, %g0
-#endif
         be      sun4c_fault_fromuser
          lduXa  [%l5] ASI_SEGMAP, %l4
 
@@ -937,11 +892,7 @@ invalid_segment_patch1:
         ld      [%l6 + 0x08], %l3       ! tmp = entry->vaddr
 
         ! Flush segment from the cache.
-#ifdef CONFIG_SUN4
-        sethi   %hi((128 * 1024)), %l7
-#else
         sethi   %hi((64 * 1024)), %l7
-#endif
 9:
 vac_hwflush_patch1:
 vac_linesize_patch:
@@ -1029,12 +980,7 @@ invalid_segment_patch2:
         or      %l4, %lo(swapper_pg_dir), %l4
         sll     %l3, 2, %l3
         ld      [%l4 + %l3], %l4
-#ifndef CONFIG_SUN4
         and     %l4, PAGE_MASK, %l4
-#else
-        sethi   %hi(PAGE_MASK), %l6
-        and     %l4, %l6, %l4
-#endif
 
         srl     %l5, (PAGE_SHIFT - 2), %l6
         and     %l6, ((SUN4C_PTRS_PER_PTE - 1) << 2), %l6