Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (110 commits)
  sh: i2c-sh7760: Replase from ctrl_* to __raw_*
  sh: clkfwk: Shuffle around to match the intc split up.
  sh: clkfwk: modify for_each_frequency end condition
  sh: fix clk_get() error handling
  sh: clkfwk: Fix fault in frequency iterator.
  sh: clkfwk: Add a helper for rate rounding by divisor ranges.
  sh: clkfwk: Abstract rate rounding helper.
  sh: clkfwk: support clock remapping.
  sh: pci: Convert to upper/lower_32_bits() helpers.
  sh: mach-sdk7786: Add support for the FPGA SRAM.
  sh: Provide a generic SRAM pool for tiny memories.
  sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786.
  sh: pci: Support slot 4 routing on SDK7786.
  sh: Fix up PMB locking.
  sh: mach-sdk7786: Add support for fpga gpios.
  sh: use pr_fmt for clock framework, too.
  sh: remove name and id from struct clk
  sh: free-without-alloc fix for sh_mobile_lcdcfb
  sh: perf: Set up perf_max_events.
  sh: perf: Support SH-X3 hardware counters.
  ...

Fix up trivial conflicts (perf_max_events got removed) in arch/sh/kernel/perf_event.c

arch/sh/mm/Kconfig

@@ -168,6 +168,10 @@ config IOREMAP_FIXED
 config UNCACHED_MAPPING
 	bool
 
+config HAVE_SRAM_POOL
+	bool
+	select GENERIC_ALLOCATOR
+
 choice
 	prompt "Kernel page size"
 	default PAGE_SIZE_4KB

arch/sh/mm/Makefile

@@ -40,6 +40,7 @@ obj-$(CONFIG_PMB)		+= pmb.o
 obj-$(CONFIG_NUMA)		+= numa.o
 obj-$(CONFIG_IOREMAP_FIXED)	+= ioremap_fixed.o
 obj-$(CONFIG_UNCACHED_MAPPING)	+= uncached.o
+obj-$(CONFIG_HAVE_SRAM_POOL)	+= sram.o
 
 # Special flags for fault_64.o.  This puts restrictions on the number of
 # caller-save registers that the compiler can target when building this file.
@@ -66,4 +67,4 @@ CFLAGS_fault_64.o += -ffixed-r7 \
 	-ffixed-r60 -ffixed-r61 -ffixed-r62 \
 	-fomit-frame-pointer
 
-EXTRA_CFLAGS += -Werror
+ccflags-y := -Werror

arch/sh/mm/asids-debugfs.c

@@ -63,7 +63,7 @@ static int __init asids_debugfs_init(void)
 {
 	struct dentry *asids_dentry;
 
-	asids_dentry = debugfs_create_file("asids", S_IRUSR, sh_debugfs_root,
+	asids_dentry = debugfs_create_file("asids", S_IRUSR, arch_debugfs_dir,
 					   NULL, &asids_debugfs_fops);
 	if (!asids_dentry)
 		return -ENOMEM;

arch/sh/mm/cache-debugfs.c

@@ -126,25 +126,19 @@ static int __init cache_debugfs_init(void)
 {
 	struct dentry *dcache_dentry, *icache_dentry;
 
-	dcache_dentry = debugfs_create_file("dcache", S_IRUSR, sh_debugfs_root,
+	dcache_dentry = debugfs_create_file("dcache", S_IRUSR, arch_debugfs_dir,
 					    (unsigned int *)CACHE_TYPE_DCACHE,
 					    &cache_debugfs_fops);
 	if (!dcache_dentry)
 		return -ENOMEM;
-	if (IS_ERR(dcache_dentry))
-		return PTR_ERR(dcache_dentry);
 
-	icache_dentry = debugfs_create_file("icache", S_IRUSR, sh_debugfs_root,
+	icache_dentry = debugfs_create_file("icache", S_IRUSR, arch_debugfs_dir,
 					    (unsigned int *)CACHE_TYPE_ICACHE,
 					    &cache_debugfs_fops);
 	if (!icache_dentry) {
 		debugfs_remove(dcache_dentry);
 		return -ENOMEM;
 	}
-	if (IS_ERR(icache_dentry)) {
-		debugfs_remove(dcache_dentry);
-		return PTR_ERR(icache_dentry);
-	}
 
 	return 0;
 }

arch/sh/mm/consistent.c

@@ -38,11 +38,12 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 	void *ret, *ret_nocache;
 	int order = get_order(size);
 
+	gfp |= __GFP_ZERO;
+
 	ret = (void *)__get_free_pages(gfp, order);
 	if (!ret)
 		return NULL;
 
-	memset(ret, 0, size);
 	/*
 	 * Pages from the page allocator may have data present in
 	 * cache. So flush the cache before using uncached memory.

arch/sh/mm/init.c

@@ -47,7 +47,6 @@ static pte_t *__get_pte_phys(unsigned long addr)
 	pgd_t *pgd;
 	pud_t *pud;
 	pmd_t *pmd;
-	pte_t *pte;
 
 	pgd = pgd_offset_k(addr);
 	if (pgd_none(*pgd)) {
@@ -67,8 +66,7 @@ static pte_t *__get_pte_phys(unsigned long addr)
 		return NULL;
 	}
 
-	pte = pte_offset_kernel(pmd, addr);
-	return pte;
+	return pte_offset_kernel(pmd, addr);
 }
 
 static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
@@ -125,13 +123,45 @@ void __clear_fixmap(enum fixed_addresses idx, pgprot_t prot)
 	clear_pte_phys(address, prot);
 }
 
+static pmd_t * __init one_md_table_init(pud_t *pud)
+{
+	if (pud_none(*pud)) {
+		pmd_t *pmd;
+
+		pmd = alloc_bootmem_pages(PAGE_SIZE);
+		pud_populate(&init_mm, pud, pmd);
+		BUG_ON(pmd != pmd_offset(pud, 0));
+	}
+
+	return pmd_offset(pud, 0);
+}
+
+static pte_t * __init one_page_table_init(pmd_t *pmd)
+{
+	if (pmd_none(*pmd)) {
+		pte_t *pte;
+
+		pte = alloc_bootmem_pages(PAGE_SIZE);
+		pmd_populate_kernel(&init_mm, pmd, pte);
+		BUG_ON(pte != pte_offset_kernel(pmd, 0));
+	}
+
+	return pte_offset_kernel(pmd, 0);
+}
+
+static pte_t * __init page_table_kmap_check(pte_t *pte, pmd_t *pmd,
+					    unsigned long vaddr, pte_t *lastpte)
+{
+	return pte;
+}
+
 void __init page_table_range_init(unsigned long start, unsigned long end,
 					 pgd_t *pgd_base)
 {
 	pgd_t *pgd;
 	pud_t *pud;
 	pmd_t *pmd;
-	pte_t *pte;
+	pte_t *pte = NULL;
 	int i, j, k;
 	unsigned long vaddr;
 
@@ -144,19 +174,13 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
 	for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
 		pud = (pud_t *)pgd;
 		for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
-#ifdef __PAGETABLE_PMD_FOLDED
-			pmd = (pmd_t *)pud;
-#else
-			pmd = (pmd_t *)alloc_bootmem_low_pages(PAGE_SIZE);
-			pud_populate(&init_mm, pud, pmd);
+			pmd = one_md_table_init(pud);
+#ifndef __PAGETABLE_PMD_FOLDED
 			pmd += k;
 #endif
 			for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
-				if (pmd_none(*pmd)) {
-					pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
-					pmd_populate_kernel(&init_mm, pmd, pte);
-					BUG_ON(pte != pte_offset_kernel(pmd, 0));
-				}
+				pte = page_table_kmap_check(one_page_table_init(pmd),
+							    pmd, vaddr, pte);
 				vaddr += PMD_SIZE;
 			}
 			k = 0;

arch/sh/mm/nommu.c

@@ -67,6 +67,10 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
 	BUG();
 }
 
+void __flush_tlb_global(void)
+{
+}
+
 void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 {
 }

arch/sh/mm/pmb.c

@@ -40,7 +40,7 @@ struct pmb_entry {
 	unsigned long flags;
 	unsigned long size;
 
-	spinlock_t lock;
+	raw_spinlock_t lock;
 
 	/*
 	 * 0 .. NR_PMB_ENTRIES for specific entry selection, or
@@ -265,7 +265,7 @@ static struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
 
 	memset(pmbe, 0, sizeof(struct pmb_entry));
 
-	spin_lock_init(&pmbe->lock);
+	raw_spin_lock_init(&pmbe->lock);
 
 	pmbe->vpn	= vpn;
 	pmbe->ppn	= ppn;
@@ -327,9 +327,9 @@ static void set_pmb_entry(struct pmb_entry *pmbe)
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&pmbe->lock, flags);
+	raw_spin_lock_irqsave(&pmbe->lock, flags);
 	__set_pmb_entry(pmbe);
-	spin_unlock_irqrestore(&pmbe->lock, flags);
+	raw_spin_unlock_irqrestore(&pmbe->lock, flags);
 }
 #endif /* CONFIG_PM */
 
@@ -368,7 +368,7 @@ int pmb_bolt_mapping(unsigned long vaddr, phys_addr_t phys,
 				return PTR_ERR(pmbe);
 			}
 
-			spin_lock_irqsave(&pmbe->lock, flags);
+			raw_spin_lock_irqsave(&pmbe->lock, flags);
 
 			pmbe->size = pmb_sizes[i].size;
 
@@ -383,9 +383,10 @@ int pmb_bolt_mapping(unsigned long vaddr, phys_addr_t phys,
 			 * entries for easier tear-down.
 			 */
 			if (likely(pmbp)) {
-				spin_lock(&pmbp->lock);
+				raw_spin_lock_nested(&pmbp->lock,
+						     SINGLE_DEPTH_NESTING);
 				pmbp->link = pmbe;
-				spin_unlock(&pmbp->lock);
+				raw_spin_unlock(&pmbp->lock);
 			}
 
 			pmbp = pmbe;
@@ -398,7 +399,7 @@ int pmb_bolt_mapping(unsigned long vaddr, phys_addr_t phys,
 			i--;
 			mapped++;
 
-			spin_unlock_irqrestore(&pmbe->lock, flags);
+			raw_spin_unlock_irqrestore(&pmbe->lock, flags);
 		}
 	} while (size >= SZ_16M);
 
@@ -627,15 +628,14 @@ static void __init pmb_synchronize(void)
 			continue;
 		}
 
-		spin_lock_irqsave(&pmbe->lock, irqflags);
+		raw_spin_lock_irqsave(&pmbe->lock, irqflags);
 
 		for (j = 0; j < ARRAY_SIZE(pmb_sizes); j++)
 			if (pmb_sizes[j].flag == size)
 				pmbe->size = pmb_sizes[j].size;
 
 		if (pmbp) {
-			spin_lock(&pmbp->lock);
-
+			raw_spin_lock_nested(&pmbp->lock, SINGLE_DEPTH_NESTING);
 			/*
 			 * Compare the previous entry against the current one to
 			 * see if the entries span a contiguous mapping. If so,
@@ -644,13 +644,12 @@ static void __init pmb_synchronize(void)
 			 */
 			if (pmb_can_merge(pmbp, pmbe))
 				pmbp->link = pmbe;
-
-			spin_unlock(&pmbp->lock);
+			raw_spin_unlock(&pmbp->lock);
 		}
 
 		pmbp = pmbe;
 
-		spin_unlock_irqrestore(&pmbe->lock, irqflags);
+		raw_spin_unlock_irqrestore(&pmbe->lock, irqflags);
 	}
 }
 
@@ -757,7 +756,7 @@ static void __init pmb_resize(void)
 		/*
 		 * Found it, now resize it.
 		 */
-		spin_lock_irqsave(&pmbe->lock, flags);
+		raw_spin_lock_irqsave(&pmbe->lock, flags);
 
 		pmbe->size = SZ_16M;
 		pmbe->flags &= ~PMB_SZ_MASK;
@@ -767,7 +766,7 @@ static void __init pmb_resize(void)
 
 		__set_pmb_entry(pmbe);
 
-		spin_unlock_irqrestore(&pmbe->lock, flags);
+		raw_spin_unlock_irqrestore(&pmbe->lock, flags);
 	}
 
 	read_unlock(&pmb_rwlock);
@@ -866,11 +865,9 @@ static int __init pmb_debugfs_init(void)
 	struct dentry *dentry;
 
 	dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO,
-				     sh_debugfs_root, NULL, &pmb_debugfs_fops);
+				     arch_debugfs_dir, NULL, &pmb_debugfs_fops);
 	if (!dentry)
 		return -ENOMEM;
-	if (IS_ERR(dentry))
-		return PTR_ERR(dentry);
 
 	return 0;
 }

arch/sh/mm/sram.c

@@ -0,0 +1,34 @@
+/*
+ * SRAM pool for tiny memories not otherwise managed.
+ *
+ * Copyright (C) 2010  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/sram.h>
+
+/*
+ * This provides a standard SRAM pool for tiny memories that can be
+ * added either by the CPU or the platform code. Typical SRAM sizes
+ * to be inserted in to the pool will generally be less than the page
+ * size, with anything more reasonably sized handled as a NUMA memory
+ * node.
+ */
+struct gen_pool *sram_pool;
+
+static int __init sram_pool_init(void)
+{
+	/*
+	 * This is a global pool, we don't care about node locality.
+	 */
+	sram_pool = gen_pool_create(1, -1);
+	if (unlikely(!sram_pool))
+		return -ENOMEM;
+
+	return 0;
+}
+core_initcall(sram_pool_init);

arch/sh/mm/tlb-debugfs.c

@@ -151,15 +151,13 @@ static int __init tlb_debugfs_init(void)
 {
 	struct dentry *itlb, *utlb;
 
-	itlb = debugfs_create_file("itlb", S_IRUSR, sh_debugfs_root,
+	itlb = debugfs_create_file("itlb", S_IRUSR, arch_debugfs_dir,
 				   (unsigned int *)TLB_TYPE_ITLB,
 				   &tlb_debugfs_fops);
 	if (unlikely(!itlb))
 		return -ENOMEM;
-	if (IS_ERR(itlb))
-		return PTR_ERR(itlb);
 
-	utlb = debugfs_create_file("utlb", S_IRUSR, sh_debugfs_root,
+	utlb = debugfs_create_file("utlb", S_IRUSR, arch_debugfs_dir,
 				   (unsigned int *)TLB_TYPE_UTLB,
 				   &tlb_debugfs_fops);
 	if (unlikely(!utlb)) {
@@ -167,11 +165,6 @@ static int __init tlb_debugfs_init(void)
 		return -ENOMEM;
 	}
 
-	if (IS_ERR(utlb)) {
-		debugfs_remove(itlb);
-		return PTR_ERR(utlb);
-	}
-
 	return 0;
 }
 module_init(tlb_debugfs_init);

arch/sh/mm/tlbflush_32.c

@@ -119,3 +119,19 @@ void local_flush_tlb_mm(struct mm_struct *mm)
 		local_irq_restore(flags);
 	}
 }
+
+void __flush_tlb_global(void)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	/*
+	 * This is the most destructive of the TLB flushing options,
+	 * and will tear down all of the UTLB/ITLB mappings, including
+	 * wired entries.
+	 */
+	__raw_writel(__raw_readl(MMUCR) | MMUCR_TI, MMUCR);
+
+	local_irq_restore(flags);
+}

arch/sh/mm/tlbflush_64.c

@@ -455,6 +455,11 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
         flush_tlb_all();
 }
 
+void __flush_tlb_global(void)
+{
+	flush_tlb_all();
+}
+
 void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
 {
 }