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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:38:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-06 08:38:20 -0700
commite8e8fade7b351f131433fa44ca5d4e960e1c0f9c (patch)
tree783adcdcc4cd6d779fbcb784e21e045024e19374
parent325ce9e3060960488fa2c1c9eccde5ad85d75e7c (diff)
parent651341213583e9c57072fed0f88a749cc240fe49 (diff)
downloadconfigs-e8e8fade7b351f131433fa44ca5d4e960e1c0f9c.tar.gz
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Defconfig update microblaze: Optimize CACHE_LOOP_LIMITS and CACHE_RANGE_LOOP macros microblaze: Fix consistent-sync code microblaze: Define correct L1_CACHE_SHIFT value microblaze: cpuinfo shows cache line length microblaze: Fix kmalloc alignment on non-coherent DMA platforms microblaze: Fix typo fault in cache code microblaze: Fix consistent code microblaze: pci-dma: use include/linux/dma-mapping.h microblaze: page.h: Remove get_user_page and free_user_page microblaze: Remove "cache" optimized copy_page function microblaze: invoke oom-killer from page fault microblaze: fix divide by zero exception message microblaze: Add isa_dma_bridge_buggy to dma.h microblaze: Remove ancient code microblaze: Quiet section mismatch warnings for MMU version microblaze: Quiet section mismatch warnings microblaze: Fix IRQ entry/exit ftracing microblaze: resource/PCI: align functions now return start of resource microblaze: PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs
-rw-r--r--arch/microblaze/configs/mmu_defconfig58
-rw-r--r--arch/microblaze/configs/nommu_defconfig39
-rw-r--r--arch/microblaze/include/asm/cache.h2
-rw-r--r--arch/microblaze/include/asm/dma.h6
-rw-r--r--arch/microblaze/include/asm/exceptions.h6
-rw-r--r--arch/microblaze/include/asm/io.h2
-rw-r--r--arch/microblaze/include/asm/page.h12
-rw-r--r--arch/microblaze/include/asm/pci.h8
-rw-r--r--arch/microblaze/include/asm/pgalloc.h16
-rw-r--r--arch/microblaze/include/asm/pgtable.h35
-rw-r--r--arch/microblaze/kernel/asm-offsets.c1
-rw-r--r--arch/microblaze/kernel/cpu/cache.c72
-rw-r--r--arch/microblaze/kernel/cpu/mb.c10
-rw-r--r--arch/microblaze/kernel/dma.c2
-rw-r--r--arch/microblaze/kernel/exceptions.c2
-rw-r--r--arch/microblaze/kernel/head.S3
-rw-r--r--arch/microblaze/kernel/irq.c3
-rw-r--r--arch/microblaze/kernel/misc.S36
-rw-r--r--arch/microblaze/kernel/traps.c34
-rw-r--r--arch/microblaze/kernel/vmlinux.lds.S3
-rw-r--r--arch/microblaze/mm/consistent.c190
-rw-r--r--arch/microblaze/mm/fault.c13
-rw-r--r--arch/microblaze/mm/pgtable.c51
-rw-r--r--arch/microblaze/pci/pci-common.c17
24 files changed, 278 insertions, 343 deletions
diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig
index 6fced1fe3bf..3c91cf6192c 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 ce2da535246..dd3a494257f 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
diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
index e52210891d7..4efe96a036f 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)
diff --git a/arch/microblaze/include/asm/dma.h b/arch/microblaze/include/asm/dma.h
index 08c073badf1..0d73d0c6de3 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 */
diff --git a/arch/microblaze/include/asm/exceptions.h b/arch/microblaze/include/asm/exceptions.h
index 90731df9e57..4c7b5d037c8 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 e45a6eea92e..00b5398d08c 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/page.h b/arch/microblaze/include/asm/page.h
index 2dd1d04129e..de493f86d28 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)))
@@ -70,14 +73,7 @@ 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/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index bdd65aaee30..5a388eeeb28 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.
diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
index f44b0d696fe..c614a893f8a 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/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index dd2bb60651c..ca2d9287154 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -512,15 +512,6 @@ 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
* must not include the _PAGE_PRESENT bit, or the _PAGE_HASHPTE bit
@@ -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);
@@ -601,7 +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/asm-offsets.c b/arch/microblaze/kernel/asm-offsets.c
index 0071260a672..c1b459c9757 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/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index f04d8a86dea..21c3a92394d 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
}
@@ -393,7 +397,7 @@ 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 +417,7 @@ 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 +441,7 @@ 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 +469,7 @@ 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 +508,7 @@ 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
@@ -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();
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 0c912b2a8e0..4216eb1eaa3 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
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index ce72dd4967c..9dcd90b5df5 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/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c
index d9f70f83097..02cbdfe5aa8 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");
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index da6a5f5dc76..1bf73988826 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/irq.c b/arch/microblaze/kernel/irq.c
index 6f39e2c001f..8f120aca123 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);
diff --git a/arch/microblaze/kernel/misc.S b/arch/microblaze/kernel/misc.S
index 7cf86498326..0fb5fc6c1fc 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
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index 5e4570ef515..75e49202a5e 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/kernel/vmlinux.lds.S b/arch/microblaze/kernel/vmlinux.lds.S
index 5ef619aad63..db72d712460 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
diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index f956e24fe49..5a59dad62bd 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);
@@ -221,7 +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);
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index 7af87f4b2c2..bab92299318 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:
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index d31312cde6e..784557fb28c 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
@@ -274,3 +238,18 @@ 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;
+}
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 740bb32ec57..01c8c97c15b 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;
@@ -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);
@@ -1228,7 +1227,7 @@ 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)