Sparc64 updates

- TLB infrastructure changes
- Make flush_tlb_pgtables not need to cook up
a dummy vma
- Update for do_fork return value change
- Update defconfig

arch/sparc64/defconfig

@@ -281,12 +281,16 @@ CONFIG_BLK_DEV_IDECD=y
 # CONFIG_BLK_DEV_IDESCSI is not set
 
 #
-# ATA host chipset support
+# ATA host chip set support
 #
 # CONFIG_BLK_DEV_CMD640 is not set
 # CONFIG_BLK_DEV_CMD640_ENHANCED is not set
 # CONFIG_BLK_DEV_ISAPNP is not set
 # CONFIG_BLK_DEV_RZ1000 is not set
+
+#
+#   PCI host chip set support
+#
 # CONFIG_BLK_DEV_OFFBOARD is not set
 # CONFIG_IDEPCI_SHARE_IRQ is not set
 CONFIG_BLK_DEV_IDEDMA_PCI=y
@@ -393,7 +397,6 @@ CONFIG_SCSI_FCAL=m
 # Fusion MPT device support
 #
 CONFIG_FUSION=m
-# CONFIG_FUSION_BOOT is not set
 
 #
 # (ability to boot linux kernel from Fusion device is DISABLED!)
@@ -622,6 +625,9 @@ CONFIG_SOUND_GAMEPORT=y
 # File systems
 #
 # CONFIG_QUOTA is not set
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+# CONFIG_QIFACE_COMPAT is not set
 CONFIG_AUTOFS_FS=m
 CONFIG_AUTOFS4_FS=m
 # CONFIG_REISERFS_FS is not set
@@ -782,10 +788,11 @@ CONFIG_USB_DEVICEFS=y
 # USB Host Controller Drivers
 #
 CONFIG_USB_EHCI_HCD=m
-# CONFIG_USB_OHCI_HCD is not set
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_UHCI_HCD=m
+# CONFIG_USB_UHCI_HCD_ALT is not set
 CONFIG_USB_UHCI=y
 # CONFIG_USB_UHCI_ALT is not set
-CONFIG_USB_OHCI=y
 
 #
 # USB Device Class drivers
@@ -802,6 +809,7 @@ CONFIG_USB_STORAGE_ISD200=y
 CONFIG_USB_STORAGE_DPCM=y
 CONFIG_USB_STORAGE_HP8200e=y
 CONFIG_USB_STORAGE_SDDR09=y
+CONFIG_USB_STORAGE_SDDR55=y
 # CONFIG_USB_STORAGE_JUMPSHOT is not set
 
 #
@@ -809,7 +817,7 @@ CONFIG_USB_STORAGE_SDDR09=y
 #
 CONFIG_USB_HID=y
 CONFIG_USB_HIDINPUT=y
-# CONFIG_USB_HIDDEV is not set
+CONFIG_USB_HIDDEV=y
 CONFIG_USB_WACOM=m
 
 #

arch/sparc64/kernel/entry.S

@@ -1429,7 +1429,7 @@ sys_fork:	 clr		%o1
 sys_clone:	flushw
 		movrz		%o1, %fp, %o1
 		mov		0, %o3
-		ba,pt		%xcc, do_fork_FIXME_NOW_RETURNS_TASK_STRUCT
+		ba,pt		%xcc, sparc_do_fork
 		 add		%sp, STACK_BIAS + REGWIN_SZ, %o2
 ret_from_syscall:
 		/* Clear SPARC_FLAG_NEWCHILD, switch_to leaves thread.flags in

arch/sparc64/kernel/process.c

@@ -582,6 +582,17 @@ void fault_in_user_windows(void)
 	do_exit(SIGILL);
 }
 
+asmlinkage int sparc_do_fork(unsigned long clone_flags,
+			     unsigned long stack_start,
+			     struct pt_regs *regs,
+			     unsigned long stack_size)
+{
+	struct task_struct *p = do_fork(clone_flags, stack_start,
+					regs, stack_size);
+
+	return IS_ERR(p) ? PTR_ERR(p) : p->pid;
+}
+
 /* Copy a Sparc thread.  The fork() return value conventions
  * under SunOS are nothing short of bletcherous:
  * Parent -->  %o0 == childs  pid, %o1 == 0

arch/sparc64/kernel/smp.c

@@ -824,30 +824,26 @@ void smp_flush_tlb_mm(struct mm_struct *mm)
 	}
 }
 
-void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+void smp_flush_tlb_range(struct mm_struct *mm, unsigned long start,
 			 unsigned long end)
 {
-	struct mm_struct *mm = vma->vm_mm;
-
-	{
-		u32 ctx = CTX_HWBITS(mm->context);
-		int cpu = smp_processor_id();
+	u32 ctx = CTX_HWBITS(mm->context);
+	int cpu = smp_processor_id();
 
-		start &= PAGE_MASK;
-		end    = PAGE_ALIGN(end);
+	start &= PAGE_MASK;
+	end    = PAGE_ALIGN(end);
 
-		if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1) {
-			mm->cpu_vm_mask = (1UL << cpu);
-			goto local_flush_and_out;
-		}
+	if (mm == current->active_mm && atomic_read(&mm->mm_users) == 1) {
+		mm->cpu_vm_mask = (1UL << cpu);
+		goto local_flush_and_out;
+	}
 
-		smp_cross_call_masked(&xcall_flush_tlb_range,
-				      ctx, start, end,
-				      mm->cpu_vm_mask);
+	smp_cross_call_masked(&xcall_flush_tlb_range,
+			      ctx, start, end,
+			      mm->cpu_vm_mask);
 
-	local_flush_and_out:
-		__flush_tlb_range(ctx, start, SECONDARY_CONTEXT, end, PAGE_SIZE, (end-start));
-	}
+ local_flush_and_out:
+	__flush_tlb_range(ctx, start, SECONDARY_CONTEXT, end, PAGE_SIZE, (end-start));
 }
 
 void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end)

include/asm-i386/tlb.h

@@ -5,8 +5,8 @@
  * x86 doesn't need any special per-pte or
  * per-vma handling..
  */
-#define tlb_start_vma(tlb, vma) do { } while (0)
-#define tlb_end_vma(tlb, vma) do { } while (0)
+#define tlb_start_vma(tlb, vma, start, end) do { } while (0)
+#define tlb_end_vma(tlb, vma, start, end) do { } while (0)
 #define tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
 
 /*

include/asm-sparc64/tlb.h

+#ifndef _SPARC64_TLB_H
+#define _SPARC64_TLB_H
+
+#define tlb_flush(tlb)		flush_tlb_mm((tlb)->mm)
+
+#define tlb_start_vma(tlb, vma, start, end) \
+	flush_cache_range(vma, start, end)
+#define tlb_end_vma(tlb, vma, start, end) \
+	flush_tlb_range(vma, start, end)
+
+#define tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
+
 #include <asm-generic/tlb.h>
+
+#define pmd_free_tlb(tlb, pmd)	pmd_free(pmd)
+#define pte_free_tlb(tlb, pte)	pte_free(pte)
+
+#endif /* _SPARC64_TLB_H */

include/asm-sparc64/tlbflush.h

@@ -36,6 +36,16 @@ do { if(CTX_VALID((__vma)->vm_mm->context)) { \
      } \
 } while(0)
 
+#define flush_tlb_vpte_range(__mm, start, end) \
+do { if(CTX_VALID((__mm)->context)) { \
+	unsigned long __start = (start)&PAGE_MASK; \
+	unsigned long __end = PAGE_ALIGN(end); \
+	__flush_tlb_range(CTX_HWBITS((__mm)->context), __start, \
+			  SECONDARY_CONTEXT, __end, PAGE_SIZE, \
+			  (__end - __start)); \
+     } \
+} while(0)
+
 #define flush_tlb_page(vma, page) \
 do { struct mm_struct *__mm = (vma)->vm_mm; \
      if(CTX_VALID(__mm->context)) \
@@ -43,11 +53,18 @@ do { struct mm_struct *__mm = (vma)->vm_mm; \
 			 SECONDARY_CONTEXT); \
 } while(0)
 
+#define flush_tlb_vpte_page(mm, addr) \
+do { struct mm_struct *__mm = (mm); \
+     if(CTX_VALID(__mm->context)) \
+	__flush_tlb_page(CTX_HWBITS(__mm->context), (addr)&PAGE_MASK, \
+			 SECONDARY_CONTEXT); \
+} while(0)
+
 #else /* CONFIG_SMP */
 
 extern void smp_flush_tlb_all(void);
 extern void smp_flush_tlb_mm(struct mm_struct *mm);
-extern void smp_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
+extern void smp_flush_tlb_range(struct mm_struct *mm, unsigned long start,
 				unsigned long end);
 extern void smp_flush_tlb_kernel_range(unsigned long start, unsigned long end);
 extern void smp_flush_tlb_page(struct mm_struct *mm, unsigned long page);
@@ -56,11 +73,15 @@ extern void smp_flush_tlb_page(struct mm_struct *mm, unsigned long page);
 #define flush_tlb_all()		smp_flush_tlb_all()
 #define flush_tlb_mm(mm)	smp_flush_tlb_mm(mm)
 #define flush_tlb_range(vma, start, end) \
-	smp_flush_tlb_range(vma, start, end)
+	smp_flush_tlb_range((vma)->vm_mm, start, end)
+#define flush_tlb_vpte_range(mm, start, end) \
+	smp_flush_tlb_range(mm, start, end)
 #define flush_tlb_kernel_range(start, end) \
 	smp_flush_tlb_kernel_range(start, end)
 #define flush_tlb_page(vma, page) \
 	smp_flush_tlb_page((vma)->vm_mm, page)
+#define flush_tlb_vpte_page(mm, page) \
+	smp_flush_tlb_page((mm), page)
 
 #endif /* ! CONFIG_SMP */
 
@@ -81,13 +102,10 @@ static __inline__ void flush_tlb_pgtables(struct mm_struct *mm, unsigned long st
 	vpte_base = (tlb_type == spitfire ?
 		     VPTE_BASE_SPITFIRE :
 		     VPTE_BASE_CHEETAH);
-	{
-		struct vm_area_struct vma;
-		vma.vm_mm = mm;
-		flush_tlb_range(&vma,
-				vpte_base + (s >> (PAGE_SHIFT - 3)),
-				vpte_base + (e >> (PAGE_SHIFT - 3)));
-	}
+
+	flush_tlb_vpte_range(mm,
+			     vpte_base + (s >> (PAGE_SHIFT - 3)),
+			     vpte_base + (e >> (PAGE_SHIFT - 3)));
 }
 
 #endif /* _SPARC64_TLBFLUSH_H */

mm/memory.c

@@ -391,18 +391,19 @@ static void zap_pmd_range(mmu_gather_t *tlb, pgd_t * dir, unsigned long address,
 
 void unmap_page_range(mmu_gather_t *tlb, struct vm_area_struct *vma, unsigned long address, unsigned long end)
 {
+	unsigned long start = address;
 	pgd_t * dir;
 
 	if (address >= end)
 		BUG();
 	dir = pgd_offset(vma->vm_mm, address);
-	tlb_start_vma(tlb, vma);
+	tlb_start_vma(tlb, vma, start, end);
 	do {
 		zap_pmd_range(tlb, dir, address, end - address);
 		address = (address + PGDIR_SIZE) & PGDIR_MASK;
 		dir++;
 	} while (address && (address < end));
-	tlb_end_vma(tlb, vma);
+	tlb_end_vma(tlb, vma, start, end);
 }
 
 /*