From 8a66da71fa84d08bef7d1678db77df77dccefa20 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 16 Apr 2010 09:03:00 +0200
Subject: microblaze: PCI: add pci_bus_for_each_resource(), remove direct
 bus->resource[] refs

This change should be part of 89a74ecccd1f78e51faf6287e5c0e93a92ac096e

Origin description:

PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs

No functional change; this converts loops that iterate from 0 to
PCI_BUS_NUM_RESOURCES through pci_bus resource[] table to use the
pci_bus_for_each_resource() iterator instead.

This doesn't change the way resources are stored; it merely removes
dependencies on the fact that they're in a table.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/pci/pci-common.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 740bb32ec57e..5e569fa9b87b 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1025,7 +1025,7 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
 
 	struct pci_dev *dev = bus->self;
 
-	for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
+	pci_bus_for_each_resource(bus, res, i) {
 		res = bus->resource[i];
 		if (!res)
 			continue;
@@ -1228,7 +1228,7 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
 	pr_debug("PCI: Allocating bus resources for %04x:%02x...\n",
 		 pci_domain_nr(bus), bus->number);
 
-	for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
+	pci_bus_for_each_resource(bus, res, i) {
 		res = bus->resource[i];
 		if (!res || !res->flags
 		    || res->start > res->end || res->parent)
-- 
cgit v1.2.3


From c86fac4382b3fb238a520ab5f2fa200c6a868b7f Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 16 Apr 2010 09:04:51 +0200
Subject: microblaze: resource/PCI: align functions now return start of
 resource

This change should be part of b26b2d494b659f988b4d75eb394dfa0ddac415c9

Origin description:

resource/PCI: align functions now return start of resource

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/pci/pci-common.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 5e569fa9b87b..01c8c97c15b7 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1131,21 +1131,20 @@ static int skip_isa_ioresource_align(struct pci_dev *dev)
  * but we want to try to avoid allocating at 0x2900-0x2bff
  * which might have be mirrored at 0x0100-0x03ff..
  */
-void pcibios_align_resource(void *data, struct resource *res,
+resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
 	struct pci_dev *dev = data;
+	resource_size_t start = res->start;
 
 	if (res->flags & IORESOURCE_IO) {
-		resource_size_t start = res->start;
-
 		if (skip_isa_ioresource_align(dev))
-			return;
-		if (start & 0x300) {
+			return start;
+		if (start & 0x300)
 			start = (start + 0x3ff) & ~0x3ff;
-			res->start = start;
-		}
 	}
+
+	return start;
 }
 EXPORT_SYMBOL(pcibios_align_resource);
 
-- 
cgit v1.2.3


From e6d7961e5be0a259ba87411370f8be7f7da4c0f6 Mon Sep 17 00:00:00 2001
From: Steven J. Magnani
Date: Mon, 12 Apr 2010 16:01:36 -0500
Subject: microblaze: Fix IRQ entry/exit ftracing

Function traces on Microblaze don't include IRQ entry and exit arrows,
i.e.

 0)               |                            memcpy_toiovec() {
 0)   ==========> |
 0)               |                              do_IRQ() {
 ...
 0)   <========== |
 0) ! 5414.000 us |                            }

...because do_IRQ() doesn't have the proper attributes.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/irq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index 6f39e2c001f3..8f120aca123d 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/ftrace.h>
 #include <linux/kernel.h>
 #include <linux/hardirq.h>
 #include <linux/interrupt.h>
@@ -32,7 +33,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
 
 static u32 concurrent_irq;
 
-void do_IRQ(struct pt_regs *regs)
+void __irq_entry do_IRQ(struct pt_regs *regs)
 {
 	unsigned int irq;
 	struct pt_regs *old_regs = set_irq_regs(regs);
-- 
cgit v1.2.3


From 7a0248e819ddaf2c2f28e6edd287b90aa930702a Mon Sep 17 00:00:00 2001
From: Steven J. Magnani
Date: Fri, 9 Apr 2010 22:03:37 -0500
Subject: microblaze: Quiet section mismatch warnings

_start is located in .text, which causes mismatch warnings with
machine_early_init() and start_kernel() in .init.text.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/head.S        | 3 ++-
 arch/microblaze/kernel/vmlinux.lds.S | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index da6a5f5dc766..1bf739888260 100644
--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@@ -28,6 +28,7 @@
  * for more details.
  */
 
+#include <linux/init.h>
 #include <linux/linkage.h>
 #include <asm/thread_info.h>
 #include <asm/page.h>
@@ -49,7 +50,7 @@ swapper_pg_dir:
 
 #endif /* CONFIG_MMU */
 
-	.text
+	__HEAD
 ENTRY(_start)
 #if CONFIG_KERNEL_BASE_ADDR == 0
 	brai	TOPHYS(real_start)
diff --git a/arch/microblaze/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
index 5ef619aad634..db72d7124602 100644
--- a/arch/microblaze/kernel/vmlinux.lds.S
+++ b/arch/microblaze/kernel/vmlinux.lds.S
@@ -24,7 +24,8 @@ SECTIONS {
 	.text : AT(ADDR(.text) - LOAD_OFFSET) {
 		_text = . ;
 		_stext = . ;
-		*(.text .text.*)
+		HEAD_TEXT
+		TEXT_TEXT
 		*(.fixup)
 		EXIT_TEXT
 		EXIT_CALL
-- 
cgit v1.2.3


From 63f1032b97638fc2b023fa968b7703c8ebe6d6d9 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Tue, 13 Apr 2010 08:59:37 +0200
Subject: microblaze: Quiet section mismatch warnings for MMU version

Remove section mismatch - based on ppc aproach.

WARNING: vmlinux.o(.text+0x64834): Section mismatch in reference
from the function __pte_alloc_kernel() to the function .init.text:early_get_page()
The function __pte_alloc_kernel() references
the function __init early_get_page().
This is often because __pte_alloc_kernel lacks a __init
annotation or the annotation of early_get_page is wrong.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/pgalloc.h | 16 +---------------
 arch/microblaze/mm/pgtable.c          | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 15 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
index f44b0d696fe2..c614a893f8a3 100644
--- a/arch/microblaze/include/asm/pgalloc.h
+++ b/arch/microblaze/include/asm/pgalloc.h
@@ -108,21 +108,7 @@ extern inline void free_pgd_slow(pgd_t *pgd)
 #define pmd_alloc_one_fast(mm, address)	({ BUG(); ((pmd_t *)1); })
 #define pmd_alloc_one(mm, address)	({ BUG(); ((pmd_t *)2); })
 
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
-		unsigned long address)
-{
-	pte_t *pte;
-	extern void *early_get_page(void);
-	if (mem_init_done) {
-		pte = (pte_t *)__get_free_page(GFP_KERNEL |
-					__GFP_REPEAT | __GFP_ZERO);
-	} else {
-		pte = (pte_t *)early_get_page();
-		if (pte)
-			clear_page(pte);
-	}
-	return pte;
-}
+extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
 
 static inline struct page *pte_alloc_one(struct mm_struct *mm,
 		unsigned long address)
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index d31312cde6ea..c43bfc94e714 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -274,3 +274,18 @@ unsigned long iopa(unsigned long addr)
 
 	return pa;
 }
+
+__init_refok pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+		unsigned long address)
+{
+	pte_t *pte;
+	if (mem_init_done) {
+		pte = (pte_t *)__get_free_page(GFP_KERNEL |
+					__GFP_REPEAT | __GFP_ZERO);
+	} else {
+		pte = (pte_t *)early_get_page();
+		if (pte)
+			clear_page(pte);
+	}
+	return pte;
+}
-- 
cgit v1.2.3


From e7682231092d1d1dd49bc590d6d3b7f0ddc07e74 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 16 Apr 2010 09:41:07 +0200
Subject: microblaze: Remove ancient code

I found several function which we don't use that's why I am removing them.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/exceptions.h |  6 ------
 arch/microblaze/include/asm/io.h         |  2 --
 arch/microblaze/include/asm/pgtable.h    | 33 -----------------------------
 arch/microblaze/kernel/traps.c           | 34 ------------------------------
 arch/microblaze/mm/pgtable.c             | 36 --------------------------------
 5 files changed, 111 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/exceptions.h b/arch/microblaze/include/asm/exceptions.h
index 90731df9e574..4c7b5d037c88 100644
--- a/arch/microblaze/include/asm/exceptions.h
+++ b/arch/microblaze/include/asm/exceptions.h
@@ -64,12 +64,6 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
 void die(const char *str, struct pt_regs *fp, long err);
 void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr);
 
-#ifdef CONFIG_MMU
-void __bug(const char *file, int line, void *data);
-int bad_trap(int trap_num, struct pt_regs *regs);
-int debug_trap(struct pt_regs *regs);
-#endif /* CONFIG_MMU */
-
 #if defined(CONFIG_KGDB)
 void (*debugger)(struct pt_regs *regs);
 int (*debugger_bpt)(struct pt_regs *regs);
diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
index e45a6eea92e0..00b5398d08c7 100644
--- a/arch/microblaze/include/asm/io.h
+++ b/arch/microblaze/include/asm/io.h
@@ -139,8 +139,6 @@ static inline void writel(unsigned int v, volatile void __iomem *addr)
 
 #ifdef CONFIG_MMU
 
-#define mm_ptov(addr)		((void *)__phys_to_virt(addr))
-#define mm_vtop(addr)		((unsigned long)__virt_to_phys(addr))
 #define phys_to_virt(addr)	((void *)__phys_to_virt(addr))
 #define virt_to_phys(addr)	((unsigned long)__virt_to_phys(addr))
 #define virt_to_bus(addr)	((unsigned long)__virt_to_phys(addr))
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index dd2bb60651c7..16a117ed2606 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -511,15 +511,6 @@ static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address)
 
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
 
-/*
- * When flushing the tlb entry for a page, we also need to flush the hash
- * table entry.  flush_hash_page is assembler (for speed) in hashtable.S.
- */
-extern int flush_hash_page(unsigned context, unsigned long va, pte_t *ptep);
-
-/* Add an HPTE to the hash table */
-extern void add_hash_page(unsigned context, unsigned long va, pte_t *ptep);
-
 /*
  * Encode and decode a swap entry.
  * Note that the bits we use in a PTE for representing a swap entry
@@ -533,15 +524,7 @@ extern void add_hash_page(unsigned context, unsigned long va, pte_t *ptep);
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) >> 2 })
 #define __swp_entry_to_pte(x)	((pte_t) { (x).val << 2 })
 
-
-/* CONFIG_APUS */
-/* For virtual address to physical address conversion */
-extern void cache_clear(__u32 addr, int length);
-extern void cache_push(__u32 addr, int length);
-extern int mm_end_of_chunk(unsigned long addr, int len);
 extern unsigned long iopa(unsigned long addr);
-/* extern unsigned long mm_ptov(unsigned long addr) \
-	__attribute__ ((const)); TBD */
 
 /* Values for nocacheflag and cmode */
 /* These are not used by the APUS kernel_map, but prevents
@@ -552,18 +535,6 @@ extern unsigned long iopa(unsigned long addr);
 #define	IOMAP_NOCACHE_NONSER	2
 #define	IOMAP_NO_COPYBACK	3
 
-/*
- * Map some physical address range into the kernel address space.
- */
-extern unsigned long kernel_map(unsigned long paddr, unsigned long size,
-				int nocacheflag, unsigned long *memavailp);
-
-/*
- * Set cache mode of (kernel space) address range.
- */
-extern void kernel_set_cachemode(unsigned long address, unsigned long size,
-				unsigned int cmode);
-
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 #define kern_addr_valid(addr)	(1)
 
@@ -577,10 +548,6 @@ extern void kernel_set_cachemode(unsigned long address, unsigned long size,
 void do_page_fault(struct pt_regs *regs, unsigned long address,
 		   unsigned long error_code);
 
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
-			     unsigned int size, int flags);
-
-void __init adjust_total_lowmem(void);
 void mapin_ram(void);
 int map_page(unsigned long va, phys_addr_t pa, int flags);
 
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index 5e4570ef515c..75e49202a5ed 100644
--- a/arch/microblaze/kernel/traps.c
+++ b/arch/microblaze/kernel/traps.c
@@ -95,37 +95,3 @@ void dump_stack(void)
 	show_stack(NULL, NULL);
 }
 EXPORT_SYMBOL(dump_stack);
-
-#ifdef CONFIG_MMU
-void __bug(const char *file, int line, void *data)
-{
-	if (data)
-		printk(KERN_CRIT "kernel BUG at %s:%d (data = %p)!\n",
-			file, line, data);
-	else
-		printk(KERN_CRIT "kernel BUG at %s:%d!\n", file, line);
-
-	machine_halt();
-}
-
-int bad_trap(int trap_num, struct pt_regs *regs)
-{
-	printk(KERN_CRIT
-		"unimplemented trap %d called at 0x%08lx, pid %d!\n",
-		trap_num, regs->pc, current->pid);
-	return -ENOSYS;
-}
-
-int debug_trap(struct pt_regs *regs)
-{
-	int i;
-	printk(KERN_CRIT "debug trap\n");
-	for (i = 0; i < 32; i++) {
-		/* printk("r%i:%08X\t",i,regs->gpr[i]); */
-		if ((i % 4) == 3)
-			printk(KERN_CRIT "\n");
-	}
-	printk(KERN_CRIT "pc:%08lX\tmsr:%08lX\n", regs->pc, regs->msr);
-	return -ENOSYS;
-}
-#endif
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index c43bfc94e714..784557fb28cf 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -161,24 +161,6 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
 	return err;
 }
 
-void __init adjust_total_lowmem(void)
-{
-/* TBD */
-#if 0
-	unsigned long max_low_mem = MAX_LOW_MEM;
-
-	if (total_lowmem > max_low_mem) {
-		total_lowmem = max_low_mem;
-#ifndef CONFIG_HIGHMEM
-		printk(KERN_INFO "Warning, memory limited to %ld Mb, use "
-				"CONFIG_HIGHMEM to reach %ld Mb\n",
-				max_low_mem >> 20, total_memory >> 20);
-		total_memory = total_lowmem;
-#endif /* CONFIG_HIGHMEM */
-	}
-#endif
-}
-
 /*
  * Map in all of physical memory starting at CONFIG_KERNEL_START.
  */
@@ -206,24 +188,6 @@ void __init mapin_ram(void)
 /* is x a power of 2? */
 #define is_power_of_2(x)	((x) != 0 && (((x) & ((x) - 1)) == 0))
 
-/*
- * Set up a mapping for a block of I/O.
- * virt, phys, size must all be page-aligned.
- * This should only be called before ioremap is called.
- */
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
-			     unsigned int size, int flags)
-{
-	int i;
-
-	if (virt > CONFIG_KERNEL_START && virt < ioremap_bot)
-		ioremap_bot = ioremap_base = virt;
-
-	/* Put it in the page tables. */
-	for (i = 0; i < size; i += PAGE_SIZE)
-		map_page(virt + i, phys + i, flags);
-}
-
 /* Scan the real Linux page tables and return a PTE pointer for
  * a virtual address in a context.
  * Returns true (1) if PTE was found, zero otherwise.  The pointer to
-- 
cgit v1.2.3


From 113a591a17de9e71b90631be89d3268c406b11c6 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Tue, 20 Apr 2010 19:02:13 +0200
Subject: microblaze: Add isa_dma_bridge_buggy to dma.h

It is necessary for several drivers.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/dma.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/dma.h b/arch/microblaze/include/asm/dma.h
index 08c073badf19..0d73d0c6de37 100644
--- a/arch/microblaze/include/asm/dma.h
+++ b/arch/microblaze/include/asm/dma.h
@@ -18,4 +18,10 @@
 #define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1)
 #endif
 
+#ifdef CONFIG_PCI
+extern int isa_dma_bridge_buggy;
+#else
+#define isa_dma_bridge_buggy     (0)
+#endif
+
 #endif /* _ASM_MICROBLAZE_DMA_H */
-- 
cgit v1.2.3


From f3ff8212a24f1935b44a3fcdd81c787428f053a6 Mon Sep 17 00:00:00 2001
From: Randy Dunlap
Date: Wed, 21 Apr 2010 14:11:34 -0700
Subject: microblaze: fix divide by zero exception message

Fix divide exception message to say "divide by zero".

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc:	Michal Simek <monstr@monstr.eu>
Cc:	microblaze-uclinux@itee.uq.edu.au
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/exceptions.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c
index d9f70f83097f..02cbdfe5aa8d 100644
--- a/arch/microblaze/kernel/exceptions.c
+++ b/arch/microblaze/kernel/exceptions.c
@@ -121,7 +121,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
 		}
 		printk(KERN_WARNING "Divide by zero exception " \
 							"in kernel mode.\n");
-		die("Divide by exception", regs, SIGBUS);
+		die("Divide by zero exception", regs, SIGBUS);
 		break;
 	case MICROBLAZE_FPU_EXCEPTION:
 		pr_debug(KERN_WARNING "FPU exception\n");
-- 
cgit v1.2.3


From 21e1c93631e027136ea4070e7bca600c4ad4f391 Mon Sep 17 00:00:00 2001
From: Nick Piggin
Date: Fri, 23 Apr 2010 02:06:21 +1000
Subject: microblaze: invoke oom-killer from page fault

As explained in commit 1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.

Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Michal Simek <monstr@monstr.eu>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/mm/fault.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index 7af87f4b2c2c..bab922993185 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -273,16 +273,11 @@ bad_area_nosemaphore:
  * us unable to handle the page fault gracefully.
  */
 out_of_memory:
-	if (current->pid == 1) {
-		yield();
-		down_read(&mm->mmap_sem);
-		goto survive;
-	}
 	up_read(&mm->mmap_sem);
-	printk(KERN_WARNING "VM: killing process %s\n", current->comm);
-	if (user_mode(regs))
-		do_exit(SIGKILL);
-	bad_page_fault(regs, address, SIGKILL);
+	if (!user_mode(regs))
+		bad_page_fault(regs, address, SIGKILL);
+	else
+		pagefault_out_of_memory();
 	return;
 
 do_sigbus:
-- 
cgit v1.2.3


From 43f2a6e8b122378b9ad20cd8ea449cdb38f5d829 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 22 Apr 2010 07:28:48 +0200
Subject: microblaze: Remove "cache" optimized copy_page function

Current implementation doesn't handle dcache_line_length
correctly that's why is better to use generic memcpy.

Cache optimized function could be good way howto improve
performance but must be based on benchmarking not blind
function like this.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/page.h   |  4 +---
 arch/microblaze/kernel/asm-offsets.c |  1 +
 arch/microblaze/kernel/misc.S        | 36 ------------------------------------
 3 files changed, 2 insertions(+), 39 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 2dd1d04129e0..7b9ba8f145ea 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -71,13 +71,11 @@ typedef unsigned long pte_basic_t;
 #endif /* CONFIG_MMU */
 
 #  ifndef CONFIG_MMU
-#  define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)
 #  define get_user_page(vaddr)			__get_free_page(GFP_KERNEL)
 #  define free_user_page(page, addr)		free_page(addr)
-#  else /* CONFIG_MMU */
-extern void copy_page(void *to, void *from);
 #  endif /* CONFIG_MMU */
 
+# define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)
 # define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)
 
 # define clear_user_page(pgaddr, vaddr, page)	memset((pgaddr), 0, PAGE_SIZE)
diff --git a/arch/microblaze/kernel/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
index 0071260a672c..c1b459c97571 100644
--- a/arch/microblaze/kernel/asm-offsets.c
+++ b/arch/microblaze/kernel/asm-offsets.c
@@ -16,6 +16,7 @@
 #include <linux/hardirq.h>
 #include <linux/thread_info.h>
 #include <linux/kbuild.h>
+#include <asm/cpuinfo.h>
 
 int main(int argc, char *argv[])
 {
diff --git a/arch/microblaze/kernel/misc.S b/arch/microblaze/kernel/misc.S
index 7cf86498326c..0fb5fc6c1fc2 100644
--- a/arch/microblaze/kernel/misc.S
+++ b/arch/microblaze/kernel/misc.S
@@ -93,39 +93,3 @@ early_console_reg_tlb_alloc:
 	nop
 
 	.size  early_console_reg_tlb_alloc, . - early_console_reg_tlb_alloc
-
-/*
- * Copy a whole page (4096 bytes).
- */
-#define COPY_16_BYTES		\
-	lwi	r7, r6, 0;	\
-	lwi	r8, r6, 4;	\
-	lwi	r9, r6, 8;	\
-	lwi	r10, r6, 12;	\
-	swi	r7, r5, 0;	\
-	swi	r8, r5, 4;	\
-	swi	r9, r5, 8;	\
-	swi	r10, r5, 12
-
-
-/* FIXME DCACHE_LINE_BYTES (CONFIG_XILINX_MICROBLAZE0_DCACHE_LINE_LEN * 4)*/
-#define DCACHE_LINE_BYTES (4 * 4)
-
-.globl copy_page;
-.type  copy_page, @function
-.align 4;
-copy_page:
-	ori	r11, r0, (PAGE_SIZE/DCACHE_LINE_BYTES) - 1
-_copy_page_loop:
-	COPY_16_BYTES
-#if DCACHE_LINE_BYTES >= 32
-	COPY_16_BYTES
-#endif
-	addik	r6, r6, DCACHE_LINE_BYTES
-	addik	r5, r5, DCACHE_LINE_BYTES
-	bneid	r11, _copy_page_loop
-	addik	r11, r11, -1
-	rtsd	r15, 8
-	nop
-
-	.size  copy_page, . - copy_page
-- 
cgit v1.2.3


From 22dcc2e3b96107e464dbc1a5c84b5e7239906cb0 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 22 Apr 2010 08:07:46 +0200
Subject: microblaze: page.h: Remove get_user_page and free_user_page

Remove ancient macros which are here from Linux-2.4

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/page.h | 5 -----
 1 file changed, 5 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 7b9ba8f145ea..9b12902b9818 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -70,11 +70,6 @@ typedef unsigned long pte_basic_t;
 
 #endif /* CONFIG_MMU */
 
-#  ifndef CONFIG_MMU
-#  define get_user_page(vaddr)			__get_free_page(GFP_KERNEL)
-#  define free_user_page(page, addr)		free_page(addr)
-#  endif /* CONFIG_MMU */
-
 # define copy_page(to, from)			memcpy((to), (from), PAGE_SIZE)
 # define clear_page(pgaddr)			memset((pgaddr), 0, PAGE_SIZE)
 
-- 
cgit v1.2.3


From 16f6e9989293ba32e33c4a2a9b29a1d77c321723 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 16 Apr 2010 09:13:27 +0200
Subject: microblaze: pci-dma: use include/linux/dma-mapping.h

Based on af407c6db16aa9ca63559076dbe620220a822580
and f41b177157718abe9a93868bb76e47d4a6f3681d

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/pci.h | 8 --------
 1 file changed, 8 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index bdd65aaee30d..5a388eeeb28f 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -94,14 +94,6 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
 
 #define HAVE_PCI_LEGACY	1
 
-/* pci_unmap_{page,single} is a nop so... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
-#define pci_unmap_len(PTR, LEN_NAME)		(0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
-
 /* The PCI address space does equal the physical memory
  * address space (no IOMMU).  The IDE and SCSI device layers use
  * this boolean for bounce buffer decisions.
-- 
cgit v1.2.3


From f1525765fb9c432f5dc5d0d18102fbe9980a14ae Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Sat, 10 Apr 2010 17:34:06 +0200
Subject: microblaze: Fix consistent code

This patch fix consistent code which had problems with consistent_free
function.
I am not sure if we need to call flush_tlb_all after it but it keeps
tlbs synced.
I added noMMU and MMU version together.

Uncached shadow feature is not tested.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/pgtable.h |   2 +-
 arch/microblaze/kernel/dma.c          |   2 +-
 arch/microblaze/mm/consistent.c       | 188 ++++++++++++++++++----------------
 3 files changed, 100 insertions(+), 92 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 16a117ed2606..ca2d92871545 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -568,7 +568,7 @@ void __init *early_get_page(void);
 extern unsigned long ioremap_bot, ioremap_base;
 
 void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle);
-void consistent_free(void *vaddr);
+void consistent_free(size_t size, void *vaddr);
 void consistent_sync(void *vaddr, size_t size, int direction);
 void consistent_sync_page(struct page *page, unsigned long offset,
 	size_t size, int direction);
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index ce72dd4967cf..9dcd90b5df55 100644
--- a/arch/microblaze/kernel/dma.c
+++ b/arch/microblaze/kernel/dma.c
@@ -74,7 +74,7 @@ static void dma_direct_free_coherent(struct device *dev, size_t size,
 			      void *vaddr, dma_addr_t dma_handle)
 {
 #ifdef NOT_COHERENT_CACHE
-	consistent_free(vaddr);
+	consistent_free(size, vaddr);
 #else
 	free_pages((unsigned long)vaddr, get_order(size));
 #endif
diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index f956e24fe49c..713431caf592 100644
--- a/arch/microblaze/mm/consistent.c
+++ b/arch/microblaze/mm/consistent.c
@@ -42,11 +42,12 @@
 #include <linux/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/cpuinfo.h>
+#include <asm/tlbflush.h>
 
 #ifndef CONFIG_MMU
-
 /* I have to use dcache values because I can't relate on ram size */
-#define UNCACHED_SHADOW_MASK (cpuinfo.dcache_high - cpuinfo.dcache_base + 1)
+# define UNCACHED_SHADOW_MASK (cpuinfo.dcache_high - cpuinfo.dcache_base + 1)
+#endif
 
 /*
  * Consistent memory allocators. Used for DMA devices that want to
@@ -60,71 +61,16 @@
  */
 void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
 {
-	struct page *page, *end, *free;
-	unsigned long order;
-	void *ret, *virt;
-
-	if (in_interrupt())
-		BUG();
-
-	size = PAGE_ALIGN(size);
-	order = get_order(size);
-
-	page = alloc_pages(gfp, order);
-	if (!page)
-		goto no_page;
-
-	/* We could do with a page_to_phys and page_to_bus here. */
-	virt = page_address(page);
-	ret = ioremap(virt_to_phys(virt), size);
-	if (!ret)
-		goto no_remap;
-
-	/*
-	 * Here's the magic!  Note if the uncached shadow is not implemented,
-	 * it's up to the calling code to also test that condition and make
-	 * other arranegments, such as manually flushing the cache and so on.
-	 */
-#ifdef CONFIG_XILINX_UNCACHED_SHADOW
-	ret = (void *)((unsigned) ret | UNCACHED_SHADOW_MASK);
-#endif
-	/* dma_handle is same as physical (shadowed) address */
-	*dma_handle = (dma_addr_t)ret;
-
-	/*
-	 * free wasted pages.  We skip the first page since we know
-	 * that it will have count = 1 and won't require freeing.
-	 * We also mark the pages in use as reserved so that
-	 * remap_page_range works.
-	 */
-	page = virt_to_page(virt);
-	free = page + (size >> PAGE_SHIFT);
-	end  = page + (1 << order);
-
-	for (; page < end; page++) {
-		init_page_count(page);
-		if (page >= free)
-			__free_page(page);
-		else
-			SetPageReserved(page);
-	}
-
-	return ret;
-no_remap:
-	__free_pages(page, order);
-no_page:
-	return NULL;
-}
-
-#else
+	unsigned long order, vaddr;
+	void *ret;
+	unsigned int i, err = 0;
+	struct page *page, *end;
 
-void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
-{
-	int order, err, i;
-	unsigned long page, va, flags;
+#ifdef CONFIG_MMU
 	phys_addr_t pa;
 	struct vm_struct *area;
-	void	 *ret;
+	unsigned long va;
+#endif
 
 	if (in_interrupt())
 		BUG();
@@ -133,71 +79,133 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
 	size = PAGE_ALIGN(size);
 	order = get_order(size);
 
-	page = __get_free_pages(gfp, order);
-	if (!page) {
-		BUG();
+	vaddr = __get_free_pages(gfp, order);
+	if (!vaddr)
 		return NULL;
-	}
 
 	/*
 	 * we need to ensure that there are no cachelines in use,
 	 * or worse dirty in this area.
 	 */
-	flush_dcache_range(virt_to_phys(page), virt_to_phys(page) + size);
+	flush_dcache_range(virt_to_phys((void *)vaddr),
+					virt_to_phys((void *)vaddr) + size);
 
+#ifndef CONFIG_MMU
+	ret = (void *)vaddr;
+	/*
+	 * Here's the magic!  Note if the uncached shadow is not implemented,
+	 * it's up to the calling code to also test that condition and make
+	 * other arranegments, such as manually flushing the cache and so on.
+	 */
+# ifdef CONFIG_XILINX_UNCACHED_SHADOW
+	ret = (void *)((unsigned) ret | UNCACHED_SHADOW_MASK);
+# endif
+	if ((unsigned int)ret > cpuinfo.dcache_base &&
+				(unsigned int)ret < cpuinfo.dcache_high)
+		printk(KERN_WARNING
+			"ERROR: Your cache coherent area is CACHED!!!\n");
+
+	/* dma_handle is same as physical (shadowed) address */
+	*dma_handle = (dma_addr_t)ret;
+#else
 	/* Allocate some common virtual space to map the new pages. */
 	area = get_vm_area(size, VM_ALLOC);
-	if (area == NULL) {
-		free_pages(page, order);
+	if (!area) {
+		free_pages(vaddr, order);
 		return NULL;
 	}
 	va = (unsigned long) area->addr;
 	ret = (void *)va;
 
 	/* This gives us the real physical address of the first page. */
-	*dma_handle = pa = virt_to_bus((void *)page);
-
-	/* MS: This is the whole magic - use cache inhibit pages */
-	flags = _PAGE_KERNEL | _PAGE_NO_CACHE;
+	*dma_handle = pa = virt_to_bus((void *)vaddr);
+#endif
 
 	/*
-	 * Set refcount=1 on all pages in an order>0
-	 * allocation so that vfree() will actually
-	 * free all pages that were allocated.
+	 * free wasted pages.  We skip the first page since we know
+	 * that it will have count = 1 and won't require freeing.
+	 * We also mark the pages in use as reserved so that
+	 * remap_page_range works.
 	 */
-	if (order > 0) {
-		struct page *rpage = virt_to_page(page);
-		for (i = 1; i < (1 << order); i++)
-			init_page_count(rpage+i);
+	page = virt_to_page(vaddr);
+	end = page + (1 << order);
+
+	split_page(page, order);
+
+	for (i = 0; i < size && err == 0; i += PAGE_SIZE) {
+#ifdef CONFIG_MMU
+		/* MS: This is the whole magic - use cache inhibit pages */
+		err = map_page(va + i, pa + i, _PAGE_KERNEL | _PAGE_NO_CACHE);
+#endif
+
+		SetPageReserved(page);
+		page++;
 	}
 
-	err = 0;
-	for (i = 0; i < size && err == 0; i += PAGE_SIZE)
-		err = map_page(va+i, pa+i, flags);
+	/* Free the otherwise unused pages. */
+	while (page < end) {
+		__free_page(page);
+		page++;
+	}
 
 	if (err) {
-		vfree((void *)va);
+		free_pages(vaddr, order);
 		return NULL;
 	}
 
 	return ret;
 }
-#endif /* CONFIG_MMU */
 EXPORT_SYMBOL(consistent_alloc);
 
 /*
  * free page(s) as defined by the above mapping.
  */
-void consistent_free(void *vaddr)
+void consistent_free(size_t size, void *vaddr)
 {
+	struct page *page;
+
 	if (in_interrupt())
 		BUG();
 
+	size = PAGE_ALIGN(size);
+
+#ifndef CONFIG_MMU
 	/* Clear SHADOW_MASK bit in address, and free as per usual */
-#ifdef CONFIG_XILINX_UNCACHED_SHADOW
+# ifdef CONFIG_XILINX_UNCACHED_SHADOW
 	vaddr = (void *)((unsigned)vaddr & ~UNCACHED_SHADOW_MASK);
+# endif
+	page = virt_to_page(vaddr);
+
+	do {
+		ClearPageReserved(page);
+		__free_page(page);
+		page++;
+	} while (size -= PAGE_SIZE);
+#else
+	do {
+		pte_t *ptep;
+		unsigned long pfn;
+
+		ptep = pte_offset_kernel(pmd_offset(pgd_offset_k(
+						(unsigned int)vaddr),
+					(unsigned int)vaddr),
+				(unsigned int)vaddr);
+		if (!pte_none(*ptep) && pte_present(*ptep)) {
+			pfn = pte_pfn(*ptep);
+			pte_clear(&init_mm, (unsigned int)vaddr, ptep);
+			if (pfn_valid(pfn)) {
+				page = pfn_to_page(pfn);
+
+				ClearPageReserved(page);
+				__free_page(page);
+			}
+		}
+		vaddr += PAGE_SIZE;
+	} while (size -= PAGE_SIZE);
+
+	/* flush tlb */
+	flush_tlb_all();
 #endif
-	vfree(vaddr);
 }
 EXPORT_SYMBOL(consistent_free);
 
-- 
cgit v1.2.3


From c17e1a1cedb723d48d4822cae1af1c010b608b5c Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 23 Apr 2010 11:38:43 +0200
Subject: microblaze: Fix typo fault in cache code

Copy & paste error.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/cpu/cache.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index f04d8a86dead..19dae71dbaaf 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -393,7 +393,7 @@ static void __invalidate_dcache_range_wb(unsigned long start,
 #ifdef ASM_LOOP
 	CACHE_RANGE_LOOP_2(start, end, cpuinfo.dcache_line_length, wdc.clear);
 #else
-	for (i = start; i < end; i += cpuinfo.icache_line_length)
+	for (i = start; i < end; i += cpuinfo.dcache_line_length)
 		__asm__ __volatile__ ("wdc.clear	%0, r0;"	\
 				: : "r" (i));
 #endif
@@ -413,7 +413,7 @@ static void __invalidate_dcache_range_nomsr_wt(unsigned long start,
 #ifdef ASM_LOOP
 	CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
 #else
-	for (i = start; i < end; i += cpuinfo.icache_line_length)
+	for (i = start; i < end; i += cpuinfo.dcache_line_length)
 		__asm__ __volatile__ ("wdc	%0, r0;"	\
 				: : "r" (i));
 #endif
@@ -437,7 +437,7 @@ static void __invalidate_dcache_range_msr_irq_wt(unsigned long start,
 #ifdef ASM_LOOP
 	CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
 #else
-	for (i = start; i < end; i += cpuinfo.icache_line_length)
+	for (i = start; i < end; i += cpuinfo.dcache_line_length)
 		__asm__ __volatile__ ("wdc	%0, r0;"	\
 				: : "r" (i));
 #endif
@@ -465,7 +465,7 @@ static void __invalidate_dcache_range_nomsr_irq(unsigned long start,
 #ifdef ASM_LOOP
 	CACHE_RANGE_LOOP_1(start, end, cpuinfo.dcache_line_length, wdc);
 #else
-	for (i = start; i < end; i += cpuinfo.icache_line_length)
+	for (i = start; i < end; i += cpuinfo.dcache_line_length)
 		__asm__ __volatile__ ("wdc	%0, r0;"	\
 				: : "r" (i));
 #endif
@@ -504,7 +504,7 @@ static void __flush_dcache_range_wb(unsigned long start, unsigned long end)
 #ifdef ASM_LOOP
 	CACHE_RANGE_LOOP_2(start, end, cpuinfo.dcache_line_length, wdc.flush);
 #else
-	for (i = start; i < end; i += cpuinfo.icache_line_length)
+	for (i = start; i < end; i += cpuinfo.dcache_line_length)
 		__asm__ __volatile__ ("wdc.flush	%0, r0;"	\
 				: : "r" (i));
 #endif
-- 
cgit v1.2.3


From de925d9d3b64390ef6363e16e9d6a84d7dd7cee1 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Mon, 26 Apr 2010 13:49:01 +0200
Subject: microblaze: Fix kmalloc alignment on non-coherent DMA platforms

Based on PowerPC patche 52142e756e9bf6485d3d53596e8aff2e816a7253

PowerPC description:
On platforms doing non-coherent DMA (4xx, 8xx, ...), it's important
that the kmalloc minimum alignment is set to the cache line size, to
avoid sharing cache lines between different objects, so that DMA to
one of the objects doesn't corrupt the other.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/page.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 9b12902b9818..de493f86d28f 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -31,6 +31,9 @@
 
 #ifndef __ASSEMBLY__
 
+/* MS be sure that SLAB allocates aligned objects */
+#define ARCH_KMALLOC_MINALIGN	L1_CACHE_BYTES
+
 #define PAGE_UP(addr)	(((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
 #define PAGE_DOWN(addr)	((addr)&(~((PAGE_SIZE)-1)))
 
-- 
cgit v1.2.3


From 77543cebab7387eab7d482e90018a64d6f2ced1e Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Mon, 26 Apr 2010 13:53:04 +0200
Subject: microblaze: cpuinfo shows cache line length

Show cache line length in /proc/cpuinfo.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/cpu/mb.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 0c912b2a8e03..4216eb1eaa32 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -98,15 +98,17 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 
 	if (cpuinfo.use_icache)
 		count += seq_printf(m,
-				"Icache:\t\t%ukB\n",
-				cpuinfo.icache_size >> 10);
+				"Icache:\t\t%ukB\tline length:\t%dB\n",
+				cpuinfo.icache_size >> 10,
+				cpuinfo.icache_line_length);
 	else
 		count += seq_printf(m, "Icache:\t\tno\n");
 
 	if (cpuinfo.use_dcache) {
 		count += seq_printf(m,
-				"Dcache:\t\t%ukB\n",
-				cpuinfo.dcache_size >> 10);
+				"Dcache:\t\t%ukB\tline length:\t%dB\n",
+				cpuinfo.dcache_size >> 10,
+				cpuinfo.dcache_line_length);
 		if (cpuinfo.dcache_wb)
 			count += seq_printf(m, "\t\twrite-back\n");
 		else
-- 
cgit v1.2.3


From 598acab44dcbda0e300d9d080e81566334138e7d Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Mon, 26 Apr 2010 13:43:23 +0200
Subject: microblaze: Define correct L1_CACHE_SHIFT value

Microblaze cacheline length is configurable and current cpu
uses two cacheline length 4 and 8.

We are taking conservative maximum value to be sure that cacheline
alignment is satisfied for all cases.

Here is the calculation for cacheline lenght 8  32bit=4Byte values
which is corresponding with SHIFT 5.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/include/asm/cache.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
index e52210891d78..4efe96a036f7 100644
--- a/arch/microblaze/include/asm/cache.h
+++ b/arch/microblaze/include/asm/cache.h
@@ -15,7 +15,7 @@
 
 #include <asm/registers.h>
 
-#define L1_CACHE_SHIFT	2
+#define L1_CACHE_SHIFT 5
 /* word-granular cache in microblaze */
 #define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
 
-- 
cgit v1.2.3


From 385e1efafc73a5deeb20645ae8b227b4896852e2 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 29 Apr 2010 13:02:17 +0200
Subject: microblaze: Fix consistent-sync code

PCI_DMA_FROMDEVICE should call invalidation not flushing.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/mm/consistent.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index 713431caf592..5a59dad62bd2 100644
--- a/arch/microblaze/mm/consistent.c
+++ b/arch/microblaze/mm/consistent.c
@@ -229,7 +229,7 @@ void consistent_sync(void *vaddr, size_t size, int direction)
 	case PCI_DMA_NONE:
 		BUG();
 	case PCI_DMA_FROMDEVICE:	/* invalidate only */
-		flush_dcache_range(start, end);
+		invalidate_dcache_range(start, end);
 		break;
 	case PCI_DMA_TODEVICE:		/* writeback only */
 		flush_dcache_range(start, end);
-- 
cgit v1.2.3


From 3274c5707c22221574b396d140d0db3480a2027a Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Mon, 26 Apr 2010 08:54:13 +0200
Subject: microblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros

1. Remove CACHE_ALL_LOOP2 macro because it is identical to CACHE_ALL_LOOP
2. Change BUG_ON to WARN_ON
3. Remove end aligned from CACHE_LOOP_LIMITS.
C implementation do not need aligned end address and ASM code do aligned
in their macros
4. ASM optimized  CACHE_RANGE_LOOP_1/2 macros needs to get aligned end address.
Because end address is compound from start + size, end address is the first address
which is exclude.

Here is the corresponding code which describe it.
+       int align = ~(line_length - 1);
+       end = ((end & align) == end) ? end - line_length : end & align;

a) end is aligned:
it is necessary to subtruct line length because we don't want to work with
next cacheline
b) end address is not aligned:
Just align it to be ready for ASM code.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/cpu/cache.c | 62 +++++++++++++++++++++-----------------
 1 file changed, 35 insertions(+), 27 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index 19dae71dbaaf..21c3a92394de 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -96,13 +96,16 @@ static inline void __disable_dcache_nomsr(void)
 }
 
 
-/* Helper macro for computing the limits of cache range loops */
+/* Helper macro for computing the limits of cache range loops
+ *
+ * End address can be unaligned which is OK for C implementation.
+ * ASM implementation align it in ASM macros
+ */
 #define CACHE_LOOP_LIMITS(start, end, cache_line_length, cache_size)	\
 do {									\
 	int align = ~(cache_line_length - 1);				\
 	end = min(start + cache_size, end);				\
 	start &= align;							\
-	end = ((end & align) + cache_line_length);			\
 } while (0);
 
 /*
@@ -111,9 +114,9 @@ do {									\
  */
 #define CACHE_ALL_LOOP(cache_size, line_length, op)			\
 do {									\
-	unsigned int len = cache_size;					\
+	unsigned int len = cache_size - line_length;			\
 	int step = -line_length;					\
-	BUG_ON(step >= 0);						\
+	WARN_ON(step >= 0);						\
 									\
 	__asm__ __volatile__ (" 1:      " #op " %0, r0;			\
 					bgtid   %0, 1b;			\
@@ -122,26 +125,21 @@ do {									\
 					: "memory");			\
 } while (0);
 
-
-#define CACHE_ALL_LOOP2(cache_size, line_length, op)			\
-do {									\
-	unsigned int len = cache_size;					\
-	int step = -line_length;					\
-	BUG_ON(step >= 0);						\
-									\
-	__asm__ __volatile__ (" 1:	" #op "	r0, %0;			\
-					bgtid	%0, 1b;			\
-					addk	%0, %0, %1;		\
-					" : : "r" (len), "r" (step)	\
-					: "memory");			\
-} while (0);
-
-/* for wdc.flush/clear */
+/* Used for wdc.flush/clear which can use rB for offset which is not possible
+ * to use for simple wdc or wic.
+ *
+ * start address is cache aligned
+ * end address is not aligned, if end is aligned then I have to substract
+ * cacheline length because I can't flush/invalidate the next cacheline.
+ * If is not, I align it because I will flush/invalidate whole line.
+ */
 #define CACHE_RANGE_LOOP_2(start, end, line_length, op)			\
 do {									\
 	int step = -line_length;					\
+	int align = ~(line_length - 1);					\
+	end = ((end & align) == end) ? end - line_length : end & align;	\
 	int count = end - start;					\
-	BUG_ON(count <= 0);						\
+	WARN_ON(count < 0);						\
 									\
 	__asm__ __volatile__ (" 1:	" #op "	%0, %1;			\
 					bgtid	%1, 1b;			\
@@ -154,7 +152,9 @@ do {									\
 #define CACHE_RANGE_LOOP_1(start, end, line_length, op)			\
 do {									\
 	int volatile temp;						\
-	BUG_ON(end - start <= 0);					\
+	int align = ~(line_length - 1);					\
+	end = ((end & align) == end) ? end - line_length : end & align;	\
+	WARN_ON(end - start < 0);					\
 									\
 	__asm__ __volatile__ (" 1:	" #op "	%1, r0;			\
 					cmpu	%0, %1, %2;		\
@@ -360,8 +360,12 @@ static void __invalidate_dcache_all_noirq_wt(void)
 #endif
 }
 
-/* FIXME this is weird - should be only wdc but not work
- * MS: I am getting bus errors and other weird things */
+/* FIXME It is blindly invalidation as is expected
+ * but can't be called on noMMU in microblaze_cache_init below
+ *
+ * MS: noMMU kernel won't boot if simple wdc is used
+ * The reason should be that there are discared data which kernel needs
+ */
 static void __invalidate_dcache_all_wb(void)
 {
 #ifndef ASM_LOOP
@@ -369,12 +373,12 @@ static void __invalidate_dcache_all_wb(void)
 #endif
 	pr_debug("%s\n", __func__);
 #ifdef ASM_LOOP
-	CACHE_ALL_LOOP2(cpuinfo.dcache_size, cpuinfo.dcache_line_length,
-					wdc.clear)
+	CACHE_ALL_LOOP(cpuinfo.dcache_size, cpuinfo.dcache_line_length,
+					wdc)
 #else
 	for (i = 0; i < cpuinfo.dcache_size;
 		 i += cpuinfo.dcache_line_length)
-			__asm__ __volatile__ ("wdc.clear	%0, r0;" \
+			__asm__ __volatile__ ("wdc	%0, r0;" \
 					: : "r" (i));
 #endif
 }
@@ -650,7 +654,11 @@ void microblaze_cache_init(void)
 			}
 		}
 	}
-	invalidate_dcache();
+/* FIXME Invalidation is done in U-BOOT
+ * WT cache: Data is already written to main memory
+ * WB cache: Discard data on noMMU which caused that kernel doesn't boot
+ */
+	/* invalidate_dcache(); */
 	enable_dcache();
 
 	invalidate_icache();
-- 
cgit v1.2.3


From 651341213583e9c57072fed0f88a749cc240fe49 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 6 May 2010 11:37:42 +0200
Subject: microblaze: Defconfig update

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/configs/mmu_defconfig   | 58 +++++++++++++++++++++++++++++----
 arch/microblaze/configs/nommu_defconfig | 39 ++++++++++++++++++----
 2 files changed, 84 insertions(+), 13 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig
index 6fced1fe3bf0..3c91cf6192c6 100644
--- a/arch/microblaze/configs/mmu_defconfig
+++ b/arch/microblaze/configs/mmu_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.33-rc6
-# Wed Feb  3 10:02:59 2010
+# Linux kernel version: 2.6.34-rc6
+# Thu May  6 11:22:14 2010
 #
 CONFIG_MICROBLAZE=y
 # CONFIG_SWAP is not set
@@ -22,8 +22,6 @@ CONFIG_GENERIC_CSUM=y
 CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_HAVE_LATENCYTOP_SUPPORT=y
-# CONFIG_PCI is not set
-CONFIG_NO_DMA=y
 CONFIG_DTC=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 CONFIG_CONSTRUCTORS=y
@@ -56,7 +54,6 @@ CONFIG_RCU_FANOUT=32
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=17
-# CONFIG_GROUP_SCHED is not set
 # CONFIG_CGROUPS is not set
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_SYSFS_DEPRECATED_V2=y
@@ -106,6 +103,8 @@ CONFIG_SLAB=y
 # CONFIG_SLOB is not set
 # CONFIG_PROFILING is not set
 CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_API_DEBUG=y
 
 #
 # GCOV-based kernel profiling
@@ -245,13 +244,20 @@ CONFIG_BINFMT_ELF=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 # CONFIG_HAVE_AOUT is not set
 # CONFIG_BINFMT_MISC is not set
+
+#
+# Bus Options
+#
+# CONFIG_PCI is not set
+# CONFIG_PCI_DOMAINS is not set
+# CONFIG_PCI_SYSCALL is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
 CONFIG_NET=y
 
 #
 # Networking options
 #
 CONFIG_PACKET=y
-# CONFIG_PACKET_MMAP is not set
 CONFIG_UNIX=y
 CONFIG_XFRM=y
 # CONFIG_XFRM_USER is not set
@@ -341,7 +347,9 @@ CONFIG_PREVENT_FIRMWARE_BUILD=y
 # CONFIG_SYS_HYPERVISOR is not set
 # CONFIG_CONNECTOR is not set
 # CONFIG_MTD is not set
+CONFIG_OF_FLATTREE=y
 CONFIG_OF_DEVICE=y
+CONFIG_OF_MDIO=y
 # CONFIG_PARPORT is not set
 CONFIG_BLK_DEV=y
 # CONFIG_BLK_DEV_COW_COMMON is not set
@@ -370,6 +378,7 @@ CONFIG_MISC_DEVICES=y
 #
 # SCSI device support
 #
+CONFIG_SCSI_MOD=y
 # CONFIG_RAID_ATTRS is not set
 # CONFIG_SCSI is not set
 # CONFIG_SCSI_DMA is not set
@@ -383,9 +392,30 @@ CONFIG_NETDEVICES=y
 # CONFIG_EQUALIZER is not set
 # CONFIG_TUN is not set
 # CONFIG_VETH is not set
-# CONFIG_PHYLIB is not set
+CONFIG_PHYLIB=y
+
+#
+# MII PHY device drivers
+#
+# CONFIG_MARVELL_PHY is not set
+# CONFIG_DAVICOM_PHY is not set
+# CONFIG_QSEMI_PHY is not set
+# CONFIG_LXT_PHY is not set
+# CONFIG_CICADA_PHY is not set
+# CONFIG_VITESSE_PHY is not set
+# CONFIG_SMSC_PHY is not set
+# CONFIG_BROADCOM_PHY is not set
+# CONFIG_ICPLUS_PHY is not set
+# CONFIG_REALTEK_PHY is not set
+# CONFIG_NATIONAL_PHY is not set
+# CONFIG_STE10XP is not set
+# CONFIG_LSI_ET1011C_PHY is not set
+# CONFIG_MICREL_PHY is not set
+# CONFIG_FIXED_PHY is not set
+# CONFIG_MDIO_BITBANG is not set
 CONFIG_NET_ETHERNET=y
 # CONFIG_MII is not set
+# CONFIG_ETHOC is not set
 # CONFIG_DNET is not set
 # CONFIG_IBM_NEW_EMAC_ZMII is not set
 # CONFIG_IBM_NEW_EMAC_RGMII is not set
@@ -394,6 +424,7 @@ CONFIG_NET_ETHERNET=y
 # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
 # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
 # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
+# CONFIG_B44 is not set
 # CONFIG_KS8842 is not set
 # CONFIG_KS8851_MLL is not set
 CONFIG_XILINX_EMACLITE=y
@@ -444,6 +475,7 @@ CONFIG_SERIAL_UARTLITE=y
 CONFIG_SERIAL_UARTLITE_CONSOLE=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_TIMBERDALE is not set
 # CONFIG_SERIAL_GRLIB_GAISLER_APBUART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
@@ -471,6 +503,12 @@ CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
 
 #
 # Multifunction device drivers
@@ -502,6 +540,7 @@ CONFIG_USB_ARCH_HAS_EHCI=y
 # CONFIG_NEW_LEDS is not set
 # CONFIG_ACCESSIBILITY is not set
 # CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
 
@@ -572,6 +611,7 @@ CONFIG_MISC_FILESYSTEMS=y
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
+# CONFIG_LOGFS is not set
 # CONFIG_CRAMFS is not set
 # CONFIG_SQUASHFS is not set
 # CONFIG_VXFS_FS is not set
@@ -595,6 +635,7 @@ CONFIG_SUNRPC=y
 # CONFIG_RPCSEC_GSS_KRB5 is not set
 # CONFIG_RPCSEC_GSS_SPKM3 is not set
 # CONFIG_SMB_FS is not set
+# CONFIG_CEPH_FS is not set
 CONFIG_CIFS=y
 CONFIG_CIFS_STATS=y
 CONFIG_CIFS_STATS2=y
@@ -696,6 +737,7 @@ CONFIG_SCHED_DEBUG=y
 # CONFIG_DEBUG_OBJECTS is not set
 CONFIG_DEBUG_SLAB=y
 # CONFIG_DEBUG_SLAB_LEAK is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
 CONFIG_DEBUG_SPINLOCK=y
 # CONFIG_DEBUG_MUTEXES is not set
 # CONFIG_DEBUG_LOCK_ALLOC is not set
@@ -741,6 +783,7 @@ CONFIG_BRANCH_PROFILE_NONE=y
 # CONFIG_KMEMTRACE is not set
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_DMA_API_DEBUG is not set
 # CONFIG_SAMPLES is not set
 CONFIG_EARLY_PRINTK=y
 # CONFIG_HEART_BEAT is not set
@@ -862,5 +905,6 @@ CONFIG_ZLIB_INFLATE=y
 CONFIG_DECOMPRESS_GZIP=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
 CONFIG_HAVE_LMB=y
 CONFIG_NLATTR=y
diff --git a/arch/microblaze/configs/nommu_defconfig b/arch/microblaze/configs/nommu_defconfig
index ce2da535246a..dd3a494257f4 100644
--- a/arch/microblaze/configs/nommu_defconfig
+++ b/arch/microblaze/configs/nommu_defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.33-rc6
-# Wed Feb  3 10:03:21 2010
+# Linux kernel version: 2.6.34-rc6
+# Thu May  6 11:25:12 2010
 #
 CONFIG_MICROBLAZE=y
 # CONFIG_SWAP is not set
@@ -22,8 +22,6 @@ CONFIG_GENERIC_CSUM=y
 CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_LOCKDEP_SUPPORT=y
 CONFIG_HAVE_LATENCYTOP_SUPPORT=y
-# CONFIG_PCI is not set
-CONFIG_NO_DMA=y
 CONFIG_DTC=y
 CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
 CONFIG_CONSTRUCTORS=y
@@ -58,7 +56,6 @@ CONFIG_RCU_FANOUT=32
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_LOG_BUF_SHIFT=17
-# CONFIG_GROUP_SCHED is not set
 # CONFIG_CGROUPS is not set
 CONFIG_SYSFS_DEPRECATED=y
 CONFIG_SYSFS_DEPRECATED_V2=y
@@ -96,6 +93,8 @@ CONFIG_SLAB=y
 # CONFIG_MMAP_ALLOW_UNINITIALIZED is not set
 # CONFIG_PROFILING is not set
 CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_DMA_ATTRS=y
+CONFIG_HAVE_DMA_API_DEBUG=y
 
 #
 # GCOV-based kernel profiling
@@ -209,11 +208,14 @@ CONFIG_PROC_DEVICETREE=y
 #
 # Advanced setup
 #
+# CONFIG_ADVANCED_OPTIONS is not set
 
 #
 # Default settings for advanced configuration options are used
 #
+CONFIG_LOWMEM_SIZE=0x30000000
 CONFIG_KERNEL_START=0x90000000
+CONFIG_TASK_SIZE=0x80000000
 CONFIG_SELECT_MEMORY_MODEL=y
 CONFIG_FLATMEM_MANUAL=y
 # CONFIG_DISCONTIGMEM_MANUAL is not set
@@ -235,13 +237,20 @@ CONFIG_BINFMT_FLAT=y
 # CONFIG_BINFMT_SHARED_FLAT is not set
 # CONFIG_HAVE_AOUT is not set
 # CONFIG_BINFMT_MISC is not set
+
+#
+# Bus Options
+#
+# CONFIG_PCI is not set
+# CONFIG_PCI_DOMAINS is not set
+# CONFIG_PCI_SYSCALL is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
 CONFIG_NET=y
 
 #
 # Networking options
 #
 CONFIG_PACKET=y
-# CONFIG_PACKET_MMAP is not set
 CONFIG_UNIX=y
 CONFIG_XFRM=y
 # CONFIG_XFRM_USER is not set
@@ -413,6 +422,7 @@ CONFIG_MTD_UCLINUX=y
 # UBI - Unsorted block images
 #
 # CONFIG_MTD_UBI is not set
+CONFIG_OF_FLATTREE=y
 CONFIG_OF_DEVICE=y
 # CONFIG_PARPORT is not set
 CONFIG_BLK_DEV=y
@@ -442,6 +452,7 @@ CONFIG_MISC_DEVICES=y
 #
 # SCSI device support
 #
+CONFIG_SCSI_MOD=y
 # CONFIG_RAID_ATTRS is not set
 # CONFIG_SCSI is not set
 # CONFIG_SCSI_DMA is not set
@@ -458,6 +469,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_PHYLIB is not set
 CONFIG_NET_ETHERNET=y
 # CONFIG_MII is not set
+# CONFIG_ETHOC is not set
 # CONFIG_DNET is not set
 # CONFIG_IBM_NEW_EMAC_ZMII is not set
 # CONFIG_IBM_NEW_EMAC_RGMII is not set
@@ -466,6 +478,7 @@ CONFIG_NET_ETHERNET=y
 # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set
 # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set
 # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set
+# CONFIG_B44 is not set
 # CONFIG_KS8842 is not set
 # CONFIG_KS8851_MLL is not set
 # CONFIG_XILINX_EMACLITE is not set
@@ -516,6 +529,7 @@ CONFIG_SERIAL_UARTLITE=y
 CONFIG_SERIAL_UARTLITE_CONSOLE=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_TIMBERDALE is not set
 # CONFIG_SERIAL_GRLIB_GAISLER_APBUART is not set
 CONFIG_UNIX98_PTYS=y
 # CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
@@ -544,6 +558,12 @@ CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
 # CONFIG_HWMON is not set
 # CONFIG_THERMAL is not set
 # CONFIG_WATCHDOG is not set
+CONFIG_SSB_POSSIBLE=y
+
+#
+# Sonics Silicon Backplane
+#
+# CONFIG_SSB is not set
 
 #
 # Multifunction device drivers
@@ -593,6 +613,7 @@ CONFIG_USB_ARCH_HAS_EHCI=y
 # CONFIG_NEW_LEDS is not set
 # CONFIG_ACCESSIBILITY is not set
 # CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
 # CONFIG_AUXDISPLAY is not set
 # CONFIG_UIO is not set
 
@@ -661,6 +682,7 @@ CONFIG_MISC_FILESYSTEMS=y
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
 # CONFIG_JFFS2_FS is not set
+# CONFIG_LOGFS is not set
 CONFIG_CRAMFS=y
 # CONFIG_SQUASHFS is not set
 # CONFIG_VXFS_FS is not set
@@ -689,6 +711,7 @@ CONFIG_SUNRPC=y
 # CONFIG_RPCSEC_GSS_KRB5 is not set
 # CONFIG_RPCSEC_GSS_SPKM3 is not set
 # CONFIG_SMB_FS is not set
+# CONFIG_CEPH_FS is not set
 # CONFIG_CIFS is not set
 # CONFIG_NCP_FS is not set
 # CONFIG_CODA_FS is not set
@@ -733,6 +756,7 @@ CONFIG_DEBUG_OBJECTS_TIMERS=y
 # CONFIG_DEBUG_OBJECTS_WORK is not set
 CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
 # CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_KMEMLEAK is not set
 # CONFIG_DEBUG_RT_MUTEXES is not set
 # CONFIG_RT_MUTEX_TESTER is not set
 # CONFIG_DEBUG_SPINLOCK is not set
@@ -758,6 +782,7 @@ CONFIG_DEBUG_SG=y
 # CONFIG_BACKTRACE_SELF_TEST is not set
 # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
 # CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_LKDTM is not set
 # CONFIG_FAULT_INJECTION is not set
 # CONFIG_LATENCYTOP is not set
 CONFIG_SYSCTL_SYSCALL_CHECK=y
@@ -782,6 +807,7 @@ CONFIG_BRANCH_PROFILE_NONE=y
 # CONFIG_WORKQUEUE_TRACER is not set
 # CONFIG_BLK_DEV_IO_TRACE is not set
 # CONFIG_DYNAMIC_DEBUG is not set
+# CONFIG_DMA_API_DEBUG is not set
 # CONFIG_SAMPLES is not set
 CONFIG_EARLY_PRINTK=y
 # CONFIG_HEART_BEAT is not set
@@ -901,5 +927,6 @@ CONFIG_GENERIC_FIND_LAST_BIT=y
 CONFIG_ZLIB_INFLATE=y
 CONFIG_HAS_IOMEM=y
 CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
 CONFIG_HAVE_LMB=y
 CONFIG_NLATTR=y
-- 
cgit v1.2.3


From 0d5961b7f612f8f54fd6fbe1942cdfb141cddfb9 Mon Sep 17 00:00:00 2001
From: Steven J. Magnani
Date: Tue, 27 Apr 2010 13:00:23 -0500
Subject: microblaze: re-enable interrupts before calling schedule

schedule() should not be called with interrupts disabled.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/entry-nommu.S | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/entry-nommu.S b/arch/microblaze/kernel/entry-nommu.S
index 391d6197fc3b..8cc18cd2cce6 100644
--- a/arch/microblaze/kernel/entry-nommu.S
+++ b/arch/microblaze/kernel/entry-nommu.S
@@ -476,6 +476,8 @@ ENTRY(ret_from_fork)
 	nop
 
 work_pending:
+	enable_irq
+
 	andi	r11, r19, _TIF_NEED_RESCHED
 	beqi	r11, 1f
 	bralid	r15, schedule
-- 
cgit v1.2.3


From 538722ca3b762023ac65cec214901a1ebff8b575 Mon Sep 17 00:00:00 2001
From: Steven J. Magnani
Date: Thu, 6 May 2010 16:38:33 -0500
Subject: microblaze: fix get_user/put_user side-effects

The Microblaze implementations of get_user() and (MMU) put_user() evaluate
the address argument more than once. This causes unexpected side-effects for
invocations that include increment operators, i.e. get_user(foo, bar++).

This patch also removes the distinction between MMU and noMMU put_user().

Without the patch:
  $ echo 1234567890 > /proc/sys/kernel/core_pattern
  $ cat /proc/sys/kernel/core_pattern
  12345

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
---
 arch/microblaze/include/asm/uaccess.h | 87 +++++++++++++++++++++++++++--------
 1 file changed, 69 insertions(+), 18 deletions(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 446bec29b142..26460d15b338 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -182,6 +182,39 @@ extern long __user_bad(void);
  * Returns zero on success, or -EFAULT on error.
  * On error, the variable @x is set to zero.
  */
+#define get_user(x, ptr)						\
+	__get_user_check((x), (ptr), sizeof(*(ptr)))
+
+#define __get_user_check(x, ptr, size)					\
+({									\
+	unsigned long __gu_val = 0;					\
+	const typeof(*(ptr)) __user *__gu_addr = (ptr);			\
+	int __gu_err = 0;						\
+									\
+	if (access_ok(VERIFY_READ, __gu_addr, size)) {			\
+		switch (size) {						\
+		case 1:							\
+			__get_user_asm("lbu", __gu_addr, __gu_val,	\
+				       __gu_err);			\
+			break;						\
+		case 2:							\
+			__get_user_asm("lhu", __gu_addr, __gu_val,	\
+				       __gu_err);			\
+			break;						\
+		case 4:							\
+			__get_user_asm("lw", __gu_addr, __gu_val,	\
+				       __gu_err);			\
+			break;						\
+		default:						\
+			__gu_err = __user_bad();			\
+			break;						\
+		}							\
+	} else {							\
+		__gu_err = -EFAULT;					\
+	}								\
+	x = (typeof(*(ptr)))__gu_val;					\
+	__gu_err;							\
+})
 
 #define __get_user(x, ptr)						\
 ({									\
@@ -206,12 +239,6 @@ extern long __user_bad(void);
 })
 
 
-#define get_user(x, ptr)						\
-({									\
-	access_ok(VERIFY_READ, (ptr), sizeof(*(ptr)))			\
-		? __get_user((x), (ptr)) : -EFAULT;			\
-})
-
 #define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err)	\
 ({								\
 	__asm__ __volatile__ (					\
@@ -266,6 +293,42 @@ extern long __user_bad(void);
  *
  * Returns zero on success, or -EFAULT on error.
  */
+#define put_user(x, ptr)						\
+	__put_user_check((x), (ptr), sizeof(*(ptr)))
+
+#define __put_user_check(x, ptr, size)					\
+({									\
+	typeof(*(ptr)) __pu_val;					\
+	typeof(*(ptr)) __user *__pu_addr = (ptr);			\
+	int __pu_err = 0;						\
+									\
+	__pu_val = (x);							\
+	if (access_ok(VERIFY_WRITE, __pu_addr, size)) {			\
+		switch (size) {						\
+		case 1:							\
+			__put_user_asm("sb", __pu_addr, __pu_val,	\
+				       __pu_err);			\
+			break;						\
+		case 2:							\
+			__put_user_asm("sh", __pu_addr, __pu_val,	\
+				       __pu_err);			\
+			break;						\
+		case 4:							\
+			__put_user_asm("sw", __pu_addr, __pu_val,	\
+				       __pu_err);			\
+			break;						\
+		case 8:							\
+			__put_user_asm_8(__pu_addr, __pu_val, __pu_err);\
+			break;						\
+		default:						\
+			__pu_err = __user_bad();			\
+			break;						\
+		}							\
+	} else {							\
+		__pu_err = -EFAULT;					\
+	}								\
+	__pu_err;							\
+})
 
 #define __put_user(x, ptr)						\
 ({									\
@@ -290,18 +353,6 @@ extern long __user_bad(void);
 	__gu_err;							\
 })
 
-#ifndef CONFIG_MMU
-
-#define put_user(x, ptr)	__put_user((x), (ptr))
-
-#else /* CONFIG_MMU */
-
-#define put_user(x, ptr)						\
-({									\
-	access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr)))			\
-		? __put_user((x), (ptr)) : -EFAULT;			\
-})
-#endif /* CONFIG_MMU */
 
 /* copy_to_from_user */
 #define __copy_from_user(to, from, n)	\
-- 
cgit v1.2.3


From e1733d2c397476c245a681ba0b54c88858b7a0be Mon Sep 17 00:00:00 2001
From: Steven J. Magnani
Date: Tue, 27 Apr 2010 13:00:35 -0500
Subject: microblaze: export assembly functions used by modules

Modules that use copy_{to,from}_user(), memcpy(), and memset() fail to build
in certain circumstances.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/microblaze_ksyms.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index bc4dcb7d3861..ecfb852cd1c5 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -52,3 +52,13 @@ EXPORT_SYMBOL_GPL(_ebss);
 extern void _mcount(void);
 EXPORT_SYMBOL(_mcount);
 #endif
+
+/*
+ * Assembly functions that may be used (directly or indirectly) by modules
+ */
+EXPORT_SYMBOL(__copy_tofrom_user);
+
+#ifdef CONFIG_OPT_LIB_ASM
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memmove);
+#endif
-- 
cgit v1.2.3


From ddfbc935eae68294834dc29998f93147a5422a0d Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 13 May 2010 10:55:47 +0200
Subject: microblaze: Remove compilation warnings in cache macro

CC      arch/microblaze/kernel/cpu/cache.o
arch/microblaze/kernel/cpu/cache.c: In function '__invalidate_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:398: warning: ISO C90 forbids mixed declarations and code
arch/microblaze/kernel/cpu/cache.c: In function '__flush_dcache_range_wb':
arch/microblaze/kernel/cpu/cache.c:509: warning: ISO C90 forbids mixed declara

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/cpu/cache.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index 21c3a92394de..109876e8d643 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -137,8 +137,9 @@ do {									\
 do {									\
 	int step = -line_length;					\
 	int align = ~(line_length - 1);					\
+	int count;							\
 	end = ((end & align) == end) ? end - line_length : end & align;	\
-	int count = end - start;					\
+	count = end - start;						\
 	WARN_ON(count < 0);						\
 									\
 	__asm__ __volatile__ (" 1:	" #op "	%0, %1;			\
-- 
cgit v1.2.3


From 1ce2470aa544a0aa37b575c45cba366770860af7 Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 13 May 2010 12:09:54 +0200
Subject: microblaze: Remove powerpc code from Microblaze port

Remove eeh_add_device_tree_late which is powerpc specific code.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/pci/pci-common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 01c8c97c15b7..9cb782b8e036 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1507,7 +1507,7 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
 	pci_bus_add_devices(bus);
 
 	/* Fixup EEH */
-	eeh_add_device_tree_late(bus);
+	/* eeh_add_device_tree_late(bus); */
 }
 EXPORT_SYMBOL_GPL(pcibios_finish_adding_to_bus);
 
-- 
cgit v1.2.3


From ee4bcdf1d248c4ebe5f73e11631c3bd3f76d777b Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Thu, 13 May 2010 12:11:42 +0200
Subject: microblaze: export assembly functions used by modules

Export __strncpy_user, memory_size, ioremap_bot for modules.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/microblaze_ksyms.c | 1 +
 arch/microblaze/mm/init.c                 | 1 +
 arch/microblaze/mm/pgtable.c              | 1 +
 3 files changed, 3 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index ecfb852cd1c5..ff85f7718035 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -57,6 +57,7 @@ EXPORT_SYMBOL(_mcount);
  * Assembly functions that may be used (directly or indirectly) by modules
  */
 EXPORT_SYMBOL(__copy_tofrom_user);
+EXPORT_SYMBOL(__strncpy_user);
 
 #ifdef CONFIG_OPT_LIB_ASM
 EXPORT_SYMBOL(memcpy);
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index f42c2dde8b1c..cca3579d4268 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -47,6 +47,7 @@ unsigned long memory_start;
 EXPORT_SYMBOL(memory_start);
 unsigned long memory_end; /* due to mm/nommu.c */
 unsigned long memory_size;
+EXPORT_SYMBOL(memory_size);
 
 /*
  * paging_init() sets up the page tables - in fact we've already done this.
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 784557fb28cf..59bf2335a4ce 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -42,6 +42,7 @@
 
 unsigned long ioremap_base;
 unsigned long ioremap_bot;
+EXPORT_SYMBOL(ioremap_bot);
 
 /* The maximum lowmem defaults to 768Mb, but this can be configured to
  * another value.
-- 
cgit v1.2.3


From a5e48b88da225580394f825ffe67e444b050074b Mon Sep 17 00:00:00 2001
From: Michal Simek
Date: Fri, 14 May 2010 07:40:46 +0200
Subject: microblaze: Fix module loading on system with WB cache

There is necessary to flush whole dcache. Icache work should be
done in kernel/module.c.

Signed-off-by: Michal Simek <monstr@monstr.eu>
---
 arch/microblaze/kernel/module.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/microblaze')

diff --git a/arch/microblaze/kernel/module.c b/arch/microblaze/kernel/module.c
index cbecf110dc30..0e73f6606547 100644
--- a/arch/microblaze/kernel/module.c
+++ b/arch/microblaze/kernel/module.c
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 
 #include <asm/pgtable.h>
+#include <asm/cacheflush.h>
 
 void *module_alloc(unsigned long size)
 {
@@ -151,6 +152,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
 int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
 		struct module *module)
 {
+	flush_dcache();
 	return 0;
 }
 
-- 
cgit v1.2.3