BUG: unable to handle kernel NULL pointer dereference at 00000000
IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
*pde = 00000000
Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
last sysfs file:
/sys/devices/pci0000:00/0000:00:08.0/0000:01:06.0/ssb0:0/firmware/ssb0:0/loading
Modules linked in: sbs sbshc wmi battery ip_tables x_tables ac sbp2
rtc arc4 ecb crypto_blkcipher cryptomgr crypto_algapi b43 mac80211
cfg80211 led_class snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss
snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi_event
shpchp snd_seq pci_hotplug snd_timer snd_seq_device snd soundcore
snd_page_alloc i2c_nforce2 i2c_core button ohci1394 3c59x ieee1394
ohci_hcd ehci_hcd forcedeth usbcore thermal processor fan thermal_sys
Pid: 4394, comm: NetworkManager Not tainted (2.6.26-rc5-mm2 #7)
EIP: 0060:[<f8e783d5>] EFLAGS: 00010292 CPU: 0
EIP is at b43_dma_mapping_error+0x16/0x155 [b43]
EAX: f60b70b0 EBX: c011019d ECX: 0000006e EDX: 00000000
ESI: 0000006e EDI: 36100000 EBP: f626cb0c ESP: f626caf8
DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Process NetworkManager (pid: 4394, ti=f626c000 task=f6cdc620 task.ti=f626c000)
Stack: 01110211 0000006e c011019d f60b70b0 36100000 f626cb58 f8e79c3a 00000001
f6cdc620 c0181daa 01ffffff 00000001 00000000 f6d3c9b0 f60b70b0 3fffffff
00000080 f626cb50 c010d2ae f7922944 00000000 3fffffff 00000000 f6d3c9b0
Call Trace:
[<c011019d>] ? nommu_map_single+0x0/0xa6
[<f8e79c3a>] ? b43_setup_dmaring+0x25e/0xb19 [b43]
[<c0181daa>] ? trace_hardirqs_on+0x27/0x37
[<c010d2ae>] ? dma_set_mask+0x28/0x6f
[<f8e7b0d1>] ? b43_dma_init+0x26a/0x522 [b43]
[<f8e5c21c>] ? b43_wireless_core_init+0xa2a/0xfbb [b43]
[<f8e5d791>] ? b43_op_start+0x1aa/0x297 [b43]
[<f8dfa7dc>] ? ieee80211_open+0x512/0xbd1 [mac80211]
[<c05211d6>] ? dev_set_rx_mode+0x6f/0x81
[<c0526765>] ? dev_open+0x157/0x208
[<c0523d60>] ? dev_change_flags+0x147/0x2c2
[<c0535ec2>] ? do_setlink+0x499/0x5fb
[<c05cd719>] ? _read_unlock+0x6d/0x10f
[<c053823c>] ? rtnl_setlink+0x1c9/0x211
[<c0181d22>] ? trace_hardirqs_on_caller+0x35d/0x3be
[<c0538073>] ? rtnl_setlink+0x0/0x211
[<c05378f9>] ? rtnetlink_rcv_msg+0x3e7/0x401
[<c0537512>] ? rtnetlink_rcv_msg+0x0/0x401
[<c054187a>] ? netlink_rcv_skb+0xae/0x168
[<c05374ee>] ? rtnetlink_rcv+0x33/0x57
[<c05412c3>] ? netlink_unicast+0x409/0x5f2
[<c054320b>] ? netlink_sendmsg+0x583/0x5ac
[<c050d5e8>] ? sock_sendmsg+0xd7/0x126
[<c01683fd>] ? autoremove_wake_function+0x0/0x5a
[<c01683fd>] ? autoremove_wake_function+0x0/0x5a
[<c0181daa>] ? trace_hardirqs_on+0x27/0x37
[<c0181d22>] ? trace_hardirqs_on_caller+0x35d/0x3be
[<c034331a>] ? copy_from_user+0x9d/0x122
[<c051c0cd>] ? verify_iovec+0x89/0xef
[<c050d87d>] ? sys_sendmsg+0x246/0x315
[<c050ed31>] ? sys_recvmsg+0x2c4/0x2eb
[<c0184313>] ? __lock_acquire+0x1c1f/0x1d15
[<c01d6790>] ? handle_mm_fault+0x4ff/0xe2c
[<c013266f>] ? kunmap_atomic+0x12a/0x1a3
[<c050fa10>] ? sys_socketcall+0x323/0x3a6
[<c0342ca8>] ? trace_hardirqs_on_thunk+0xc/0x10
[<c0105871>] ? sysenter_past_esp+0x6a/0xa5
=======================
Code: 7f e9 f8 00 83 05 38 7e e9 f8 01 83 15 3c 7e e9 f8 00 5b c9 c3
55 89 e5 57 89 d7 56 89 ce 53 83 ec 08 8a 55 08 88 55 ef 8b 50 58 <8b>
12 8b 52 08 83 05 c8 7a e9 f8 01 83 15 cc 7a e9 f8 00 89 55
EIP: [<f8e783d5>] b43_dma_mapping_error+0x16/0x155 [b43] SS:ESP 0068:f626caf8
---[ end trace a55eb759d6c49239 ]---
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.26-rc5-mm2
# Tue Jun 10 09:40:31 2008
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
# CONFIG_GENERIC_LOCKBREAK is not set
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_FAST_CMPXCHG_LOCAL=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
# CONFIG_GENERIC_GPIO is not set
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
# CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_AOUT=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
# CONFIG_TASKSTATS is not set
# CONFIG_AUDIT is not set
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
# CONFIG_CGROUPS is not set
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
# CONFIG_GROUP_SCHED is not set
# CONFIG_SYSFS_DEPRECATED_V2 is not set
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_SYSCTL_SYSCALL_CHECK=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
# CONFIG_COMPAT_BRK is not set
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
# CONFIG_SLAB is not set
CONFIG_SLUB=y
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
# CONFIG_MARKERS is not set
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
# CONFIG_HAVE_DMA_ATTRS is not set
# CONFIG_HAVE_CLK is not set
#
# GCOV profiling
#
CONFIG_GCOV_PROFILE=y
CONFIG_GCOV_PROFILE_ALL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_KMOD=y
CONFIG_BLOCK=y
CONFIG_LBD=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_LSF=y
CONFIG_BLK_DEV_BSG=y
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
CONFIG_DEFAULT_CFQ=y
# CONFIG_DEFAULT_NOOP is not set
CONFIG_DEFAULT_IOSCHED="cfq"
# CONFIG_CLASSIC_RCU is not set
#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
# CONFIG_SMP is not set
CONFIG_X86_PC=y
# CONFIG_X86_ELAN is not set
# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_NUMAQ is not set
# CONFIG_X86_SUMMIT is not set
# CONFIG_X86_BIGSMP is not set
# CONFIG_X86_VISWS is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_ES7000 is not set
# CONFIG_X86_RDC321X is not set
# CONFIG_X86_VSMP is not set
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
# CONFIG_PARAVIRT_GUEST is not set
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
CONFIG_MK7=y
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
# CONFIG_MCYRIXIII is not set
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_GENERIC_CPU is not set
# CONFIG_X86_GENERIC is not set
CONFIG_X86_CPU=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_USE_3DNOW=y
CONFIG_X86_TSC=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=4
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
# CONFIG_IOMMU_HELPER is not set
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_RCU=y
CONFIG_RCU_TRACE=y
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=m
CONFIG_X86_MCE_P4THERMAL=y
CONFIG_VM86=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
# CONFIG_X86_REBOOTFIXUPS is not set
CONFIG_MICROCODE=m
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=m
CONFIG_X86_CPUID=m
# CONFIG_NOHIGHMEM is not set
CONFIG_HIGHMEM4G=y
# CONFIG_HIGHMEM64G is not set
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
CONFIG_NEED_NODE_MEMMAP_SIZE=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ILLEGAL_POINTER_VALUE=0
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
# CONFIG_DISCONTIGMEM_MANUAL is not set
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_GET_USER_PAGES_FAST=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_STATIC=y
# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
#
# Memory hotplug is currently incompatible with Software Suspend
#
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_RESOURCES_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_HIGHPTE=y
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
CONFIG_MTRR_SANITIZER=y
CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0
CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1
CONFIG_X86_PAT=y
CONFIG_EFI=y
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
CONFIG_HZ_300=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=300
CONFIG_SCHED_HRTICK=y
# CONFIG_KEXEC is not set
# CONFIG_CRASH_DUMP is not set
CONFIG_PHYSICAL_START=0x100000
# CONFIG_RELOCATABLE is not set
CONFIG_PHYSICAL_ALIGN=0x100000
CONFIG_COMPAT_VDSO=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
#
# Power management options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION=""
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=m
CONFIG_ACPI_FAN=m
CONFIG_ACPI_DOCK=y
# CONFIG_ACPI_BAY is not set
CONFIG_ACPI_PROCESSOR=m
CONFIG_ACPI_THERMAL=m
CONFIG_ACPI_WMI=m
# CONFIG_ACPI_ASUS is not set
# CONFIG_ACPI_TOSHIBA is not set
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=2001
CONFIG_ACPI_DEBUG=y
# CONFIG_ACPI_DEBUG_FUNC_TRACE is not set
CONFIG_ACPI_EC=y
CONFIG_ACPI_PCI_SLOT=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
CONFIG_ACPI_SBS=m
CONFIG_X86_APM_BOOT=y
CONFIG_APM=m
# CONFIG_APM_IGNORE_USER_SUSPEND is not set
# CONFIG_APM_DO_ENABLE is not set
# CONFIG_APM_CPU_IDLE is not set
# CONFIG_APM_DISPLAY_BLANK is not set
# CONFIG_APM_ALLOW_INTS is not set
# CONFIG_APM_REAL_MODE_POWER_OFF is not set
#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
# CONFIG_PCI_GODIRECT is not set
# CONFIG_PCI_GOOLPC is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=m
CONFIG_PCIEAER=y
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEBUG=y
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
# CONFIG_PCI_DEBUG is not set
CONFIG_HT_IRQ=y
CONFIG_ISA_DMA_API=y
# CONFIG_ISA is not set
# CONFIG_MCA is not set
# CONFIG_SCx200 is not set
# CONFIG_OLPC is not set
# CONFIG_PCCARD is not set
CONFIG_HOTPLUG_PCI=m
CONFIG_HOTPLUG_PCI_FAKE=m
CONFIG_HOTPLUG_PCI_COMPAQ=m
CONFIG_HOTPLUG_PCI_COMPAQ_NVRAM=y
CONFIG_HOTPLUG_PCI_IBM=m
CONFIG_HOTPLUG_PCI_ACPI=m
CONFIG_HOTPLUG_PCI_ACPI_IBM=m
CONFIG_HOTPLUG_PCI_CPCI=y
CONFIG_HOTPLUG_PCI_CPCI_ZT5550=m
CONFIG_HOTPLUG_PCI_CPCI_GENERIC=m
CONFIG_HOTPLUG_PCI_SHPC=m
#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
#
# Networking
#
CONFIG_NET=y
#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
CONFIG_INET_TUNNEL=m
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IP_VS is not set
CONFIG_IPV6=m
# CONFIG_IPV6_PRIVACY is not set
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
# CONFIG_INET6_AH is not set
# CONFIG_INET6_ESP is not set
# CONFIG_INET6_IPCOMP is not set
# CONFIG_IPV6_MIP6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
CONFIG_INET6_TUNNEL=m
# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
# CONFIG_INET6_XFRM_MODE_BEET is not set
# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
CONFIG_IPV6_SIT=m
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=m
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_IPV6_MROUTE is not set
# CONFIG_NETWORK_SECMARK is not set
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
# CONFIG_NETFILTER_ADVANCED is not set
#
# Core Netfilter Configuration
#
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CONNTRACK_FTP=m
CONFIG_NF_CONNTRACK_IRC=m
CONFIG_NF_CONNTRACK_SIP=m
# CONFIG_NF_CT_NETLINK is not set
CONFIG_NETFILTER_XTABLES=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
#
# IP: Netfilter Configuration
#
CONFIG_NF_CONNTRACK_IPV4=m
CONFIG_NF_CONNTRACK_PROC_COMPAT=y
CONFIG_IP_NF_IPTABLES=m
# CONFIG_IP_NF_FILTER is not set
# CONFIG_IP_NF_TARGET_LOG is not set
# CONFIG_IP_NF_TARGET_ULOG is not set
# CONFIG_NF_NAT is not set
# CONFIG_IP_NF_MANGLE is not set
#
# IPv6: Netfilter Configuration
#
# CONFIG_NF_CONNTRACK_IPV6 is not set
CONFIG_IP6_NF_IPTABLES=m
# CONFIG_IP6_NF_MATCH_IPV6HEADER is not set
# CONFIG_IP6_NF_FILTER is not set
# CONFIG_IP6_NF_MANGLE is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=m
# CONFIG_SCTP_DBG_MSG is not set
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_HMAC_NONE is not set
# CONFIG_SCTP_HMAC_SHA1 is not set
CONFIG_SCTP_HMAC_MD5=y
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_SCHED is not set
#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_CAN is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_AF_RXRPC is not set
#
# Wireless
#
CONFIG_CFG80211=m
CONFIG_NL80211=y
CONFIG_WIRELESS_EXT=y
CONFIG_MAC80211=m
#
# QoS/HT support disabled
#
#
# QoS/HT support needs CONFIG_NET_SCHED
#
#
# QoS/HT support needs CONFIG_NETDEVICES_MULTIQUEUE
#
#
# Rate control algorithm selection
#
CONFIG_MAC80211_RC_DEFAULT_PID=y
# CONFIG_MAC80211_RC_DEFAULT_NONE is not set
#
# Selecting 'y' for an algorithm will
#
#
# build the algorithm into mac80211.
#
CONFIG_MAC80211_RC_DEFAULT="pid"
CONFIG_MAC80211_RC_PID=y
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
# CONFIG_MAC80211_DEBUGFS is not set
# CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT is not set
CONFIG_MAC80211_DEBUG=y
# CONFIG_MAC80211_HT_DEBUG is not set
# CONFIG_MAC80211_VERBOSE_DEBUG is not set
# CONFIG_MAC80211_LOWTX_FRAME_DUMP is not set
# CONFIG_TKIP_DEBUG is not set
# CONFIG_MAC80211_DEBUG_COUNTERS is not set
# CONFIG_MAC80211_IBSS_DEBUG is not set
CONFIG_MAC80211_VERBOSE_PS_DEBUG=y
CONFIG_MAC80211_VERBOSE_MPL_DEBUG=y
# CONFIG_IEEE80211 is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
#
# Device Drivers
#
#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_BUILTIN_FIRMWARE=""
# CONFIG_DEBUG_DRIVER is not set
# CONFIG_DEBUG_DEVRES is not set
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_SERIAL=m
CONFIG_PARPORT_PC_FIFO=y
CONFIG_PARPORT_PC_SUPERIO=y
# CONFIG_PARPORT_GSC is not set
CONFIG_PARPORT_AX88796=m
CONFIG_PARPORT_1284=y
CONFIG_PARPORT_NOT_PC=y
CONFIG_PNP=y
# CONFIG_PNP_DEBUG is not set
#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_FD=y
# CONFIG_PARIDE is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_BUFFERS=8
# CONFIG_CDROM_PKTCDVD_WCACHE is not set
# CONFIG_ATA_OVER_ETH is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set
#
# SCSI device support
#
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_TGT=m
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_PROC_FS is not set
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_CHR_DEV_SG=y
# CONFIG_CHR_DEV_SCH is not set
#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set
# CONFIG_SCSI_SCAN_ASYNC is not set
CONFIG_SCSI_WAIT_SCAN=m
#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
CONFIG_SCSI_FC_ATTRS=y
# CONFIG_SCSI_ISCSI_ATTRS is not set
CONFIG_SCSI_SAS_ATTRS=m
# CONFIG_SCSI_SAS_LIBSAS is not set
# CONFIG_SCSI_SRP_ATTRS is not set
# CONFIG_SCSI_LOWLEVEL is not set
# CONFIG_SCSI_DH is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_ACPI=y
CONFIG_SATA_PMP=y
CONFIG_SATA_AHCI=y
CONFIG_SATA_SIL24=y
CONFIG_ATA_SFF=y
# CONFIG_SATA_SVW is not set
# CONFIG_ATA_PIIX is not set
# CONFIG_SATA_MV is not set
CONFIG_SATA_NV=y
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
CONFIG_SATA_SIL=y
# CONFIG_SATA_SIS is not set
# CONFIG_SATA_ULI is not set
# CONFIG_SATA_VIA is not set
# CONFIG_SATA_VITESSE is not set
# CONFIG_SATA_INIC162X is not set
# CONFIG_PATA_ACPI is not set
# CONFIG_PATA_ALI is not set
# CONFIG_PATA_AMD is not set
# CONFIG_PATA_ARTOP is not set
# CONFIG_PATA_ATIIXP is not set
# CONFIG_PATA_CMD640_PCI is not set
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
# CONFIG_PATA_CS5535 is not set
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
# CONFIG_PATA_EFAR is not set
# CONFIG_ATA_GENERIC is not set
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
# CONFIG_PATA_HPT3X2N is not set
# CONFIG_PATA_HPT3X3 is not set
# CONFIG_PATA_IT821X is not set
# CONFIG_PATA_IT8213 is not set
# CONFIG_PATA_JMICRON is not set
# CONFIG_PATA_TRIFLEX is not set
# CONFIG_PATA_MARVELL is not set
# CONFIG_PATA_MPIIX is not set
# CONFIG_PATA_OLDPIIX is not set
# CONFIG_PATA_NETCELL is not set
# CONFIG_PATA_NINJA32 is not set
# CONFIG_PATA_NS87410 is not set
# CONFIG_PATA_NS87415 is not set
# CONFIG_PATA_OPTI is not set
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PDC_OLD is not set
# CONFIG_PATA_RADISYS is not set
# CONFIG_PATA_RZ1000 is not set
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
# CONFIG_PATA_PDC2027X is not set
# CONFIG_PATA_SIL680 is not set
# CONFIG_PATA_SIS is not set
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
# CONFIG_PATA_SCH is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=m
CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
# CONFIG_MD_RAID5_RESHAPE is not set
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=m
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_DEBUG is not set
CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_DELAY=m
CONFIG_DM_UEVENT=y
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=y
CONFIG_FIREWIRE_OHCI=y
CONFIG_FIREWIRE_OHCI_DEBUG=y
CONFIG_FIREWIRE_SBP2=y
CONFIG_IEEE1394=m
#
# Subsystem Options
#
CONFIG_IEEE1394_VERBOSEDEBUG=y
#
# Controllers
#
CONFIG_IEEE1394_PCILYNX=m
CONFIG_IEEE1394_OHCI1394=m
#
# Protocols
#
CONFIG_IEEE1394_VIDEO1394=m
CONFIG_IEEE1394_SBP2=m
# CONFIG_IEEE1394_SBP2_PHYS_DMA is not set
CONFIG_IEEE1394_ETH1394_ROM_ENTRY=y
CONFIG_IEEE1394_ETH1394=m
# CONFIG_IEEE1394_DV1394 is not set
CONFIG_IEEE1394_RAWIO=m
CONFIG_I2O=m
CONFIG_I2O_LCT_NOTIFY_ON_CHANGES=y
CONFIG_I2O_EXT_ADAPTEC=y
CONFIG_I2O_CONFIG=m
CONFIG_I2O_CONFIG_OLD_IOCTL=y
CONFIG_I2O_BUS=m
CONFIG_I2O_BLOCK=m
CONFIG_I2O_SCSI=m
CONFIG_I2O_PROC=m
# CONFIG_MACINTOSH_DRIVERS is not set
CONFIG_NETDEVICES=y
# CONFIG_NETDEVICES_MULTIQUEUE is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_MACVLAN is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_VETH is not set
# CONFIG_NET_SB1000 is not set
# CONFIG_ARCNET is not set
# CONFIG_PHYLIB is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
CONFIG_NET_VENDOR_3COM=y
CONFIG_VORTEX=m
# CONFIG_TYPHOON is not set
# CONFIG_NET_TULIP is not set
# CONFIG_HP100 is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
# CONFIG_AMD8111_ETH is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_B44 is not set
CONFIG_FORCEDETH=m
# CONFIG_FORCEDETH_NAPI is not set
# CONFIG_EEPRO100 is not set
# CONFIG_E100 is not set
# CONFIG_FEALNX is not set
# CONFIG_NATSEMI is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_8139CP is not set
# CONFIG_8139TOO is not set
# CONFIG_R6040 is not set
# CONFIG_SIS900 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SUNDANCE is not set
# CONFIG_TLAN is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_SC92031 is not set
# CONFIG_NET_POCKET is not set
CONFIG_NETDEV_1000=y
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
# CONFIG_E1000 is not set
# CONFIG_E1000E is not set
# CONFIG_E1000E_ENABLED is not set
# CONFIG_IP1000 is not set
# CONFIG_IGB is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
CONFIG_R8169=y
# CONFIG_R8169_NAPI is not set
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
# CONFIG_SKY2 is not set
# CONFIG_VIA_VELOCITY is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2 is not set
# CONFIG_QLA3XXX is not set
# CONFIG_ATL1 is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_TR is not set
#
# Wireless LAN
#
CONFIG_WLAN_PRE80211=y
CONFIG_STRIP=m
CONFIG_WLAN_80211=y
# CONFIG_IPW2100 is not set
# CONFIG_IPW2200 is not set
# CONFIG_LIBERTAS is not set
# CONFIG_AIRO is not set
# CONFIG_HERMES is not set
# CONFIG_ATMEL is not set
# CONFIG_PRISM54 is not set
# CONFIG_USB_ZD1201 is not set
# CONFIG_USB_NET_RNDIS_WLAN is not set
# CONFIG_RTL8180 is not set
# CONFIG_RTL8187 is not set
# CONFIG_ADM8211 is not set
# CONFIG_P54_COMMON is not set
# CONFIG_ATH5K is not set
# CONFIG_IWLCORE is not set
# CONFIG_IWLWIFI_LEDS is not set
# CONFIG_IWL4965 is not set
# CONFIG_IWL3945 is not set
# CONFIG_HOSTAP is not set
CONFIG_B43=m
CONFIG_B43_PCI_AUTOSELECT=y
CONFIG_B43_PCICORE_AUTOSELECT=y
CONFIG_B43_LEDS=y
CONFIG_B43_DEBUG=y
# CONFIG_B43_FORCE_PIO is not set
# CONFIG_B43LEGACY is not set
# CONFIG_ZD1211RW is not set
# CONFIG_RT2X00 is not set
#
# USB Network Adapters
#
CONFIG_USB_CATC=m
CONFIG_USB_KAWETH=m
# CONFIG_USB_KAWETH_FIRMWARE is not set
CONFIG_USB_PEGASUS=m
CONFIG_USB_RTL8150=m
CONFIG_USB_USBNET=m
CONFIG_USB_NET_AX8817X=m
CONFIG_USB_NET_CDCETHER=m
CONFIG_USB_NET_DM9601=m
CONFIG_USB_NET_GL620A=m
CONFIG_USB_NET_NET1080=m
CONFIG_USB_NET_PLUSB=m
CONFIG_USB_NET_MCS7830=m
CONFIG_USB_NET_RNDIS_HOST=m
CONFIG_USB_NET_CDC_SUBSET=m
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_BELKIN=y
CONFIG_USB_ARMLINUX=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_ZAURUS=m
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_FC is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set
# CONFIG_ISDN is not set
# CONFIG_PHONE is not set
#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
CONFIG_INPUT_POLLDEV=m
#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set
#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
# CONFIG_KEYBOARD_STOWAWAY is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_TOUCHKIT is not set
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_GAMEPORT is not set
#
# Character devices
#
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_DEVKMEM=y
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set
#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set
#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_PRINTER is not set
# CONFIG_PPDEV is not set
# CONFIG_IPMI_HANDLER is not set
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=m
CONFIG_HW_RANDOM_GEODE=m
CONFIG_HW_RANDOM_VIA=m
# CONFIG_NVRAM is not set
CONFIG_RTC=m
# CONFIG_GEN_RTC is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
# CONFIG_NSC_GPIO is not set
# CONFIG_CS5535_GPIO is not set
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=256
CONFIG_HPET=y
CONFIG_HPET_RTC_IRQ=y
CONFIG_HPET_MMAP=y
CONFIG_HANGCHECK_TIMER=m
CONFIG_TCG_TPM=m
CONFIG_TCG_TIS=m
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
CONFIG_TCG_INFINEON=m
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=m
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_ALGOPCA=m
#
# I2C Hardware Bus support
#
#
# PC SMBus host controller drivers
#
CONFIG_I2C_ALI1535=m
CONFIG_I2C_ALI1563=m
CONFIG_I2C_ALI15X3=m
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
# CONFIG_I2C_I801 is not set
# CONFIG_I2C_PIIX4 is not set
CONFIG_I2C_NFORCE2=m
# CONFIG_I2C_NFORCE2_S4985 is not set
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m
#
# Graphics adapter I2C/DDC channel drivers
#
CONFIG_I2C_VOODOO3=m
#
# External I2C/SMBus adapter drivers
#
CONFIG_I2C_PARPORT=m
CONFIG_I2C_PARPORT_LIGHT=m
# CONFIG_I2C_TAOS_EVM is not set
CONFIG_I2C_TINY_USB=m
#
# Other I2C/SMBus bus drivers
#
CONFIG_I2C_ISCH=m
CONFIG_I2C_OCORES=m
# CONFIG_I2C_SIMTEC is not set
# CONFIG_SCx200_ACB is not set
CONFIG_I2C_STUB=m
CONFIG_I2C_PCA_PLATFORM=m
#
# Miscellaneous I2C Chip support
#
CONFIG_DS1682=m
CONFIG_SENSORS_EEPROM=m
CONFIG_SENSORS_PCF8574=m
CONFIG_PCF8575=m
CONFIG_SENSORS_PCF8591=m
CONFIG_SENSORS_MAX6875=m
CONFIG_SENSORS_TSL2550=m
# CONFIG_I2C_DEBUG_CORE is not set
# CONFIG_I2C_DEBUG_ALGO is not set
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set
# CONFIG_SPI is not set
# CONFIG_W1 is not set
CONFIG_POWER_SUPPLY=y
CONFIG_POWER_SUPPLY_DEBUG=y
# CONFIG_PDA_POWER is not set
# CONFIG_BATTERY_DS2760 is not set
# CONFIG_HWMON is not set
CONFIG_THERMAL=m
# CONFIG_WATCHDOG is not set
#
# Sonics Silicon Backplane
#
CONFIG_SSB_POSSIBLE=y
CONFIG_SSB=y
CONFIG_SSB_SPROM=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
CONFIG_SSB_B43_PCI_BRIDGE=y
# CONFIG_SSB_DEBUG is not set
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
CONFIG_SSB_DRIVER_PCICORE=y
#
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set
# CONFIG_HTC_PASIC3 is not set
#
# Multimedia devices
#
#
# Multimedia core support
#
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2_COMMON=m
CONFIG_VIDEO_ALLOW_V4L1=y
CONFIG_VIDEO_V4L1_COMPAT=y
# CONFIG_DVB_CORE is not set
CONFIG_VIDEO_MEDIA=m
#
# Multimedia drivers
#
# CONFIG_MEDIA_ATTACH is not set
CONFIG_MEDIA_TUNER=m
# CONFIG_MEDIA_TUNER_CUSTOMIZE is not set
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_VIDEO_V4L2=m
CONFIG_VIDEO_V4L1=m
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEO_BTCX=m
CONFIG_VIDEO_IR_I2C=m
CONFIG_VIDEO_IR=m
CONFIG_VIDEO_TVEEPROM=m
CONFIG_VIDEO_TUNER=m
CONFIG_VIDEO_CAPTURE_DRIVERS=y
CONFIG_VIDEO_ADV_DEBUG=y
CONFIG_VIDEO_HELPER_CHIPS_AUTO=y
CONFIG_VIDEO_TVAUDIO=m
CONFIG_VIDEO_TDA7432=m
CONFIG_VIDEO_TDA9875=m
CONFIG_VIDEO_MSP3400=m
CONFIG_VIDEO_VIVI=m
CONFIG_VIDEO_BT848=m
CONFIG_VIDEO_SAA6588=m
# CONFIG_VIDEO_BWQCAM is not set
# CONFIG_VIDEO_CQCAM is not set
# CONFIG_VIDEO_W9966 is not set
CONFIG_VIDEO_CPIA=m
CONFIG_VIDEO_CPIA_PP=m
CONFIG_VIDEO_CPIA_USB=m
CONFIG_VIDEO_CPIA2=m
# CONFIG_VIDEO_SAA5246A is not set
# CONFIG_VIDEO_SAA5249 is not set
# CONFIG_TUNER_3036 is not set
# CONFIG_VIDEO_STRADIS is not set
# CONFIG_VIDEO_ZORAN is not set
# CONFIG_VIDEO_SAA7134 is not set
# CONFIG_VIDEO_MXB is not set
# CONFIG_VIDEO_DPC is not set
# CONFIG_VIDEO_HEXIUM_ORION is not set
# CONFIG_VIDEO_HEXIUM_GEMINI is not set
# CONFIG_VIDEO_CX88 is not set
# CONFIG_VIDEO_IVTV is not set
# CONFIG_VIDEO_CAFE_CCIC is not set
CONFIG_V4L_USB_DRIVERS=y
# CONFIG_VIDEO_PVRUSB2 is not set
# CONFIG_VIDEO_EM28XX is not set
# CONFIG_VIDEO_USBVISION is not set
# CONFIG_USB_VICAM is not set
# CONFIG_USB_IBMCAM is not set
# CONFIG_USB_KONICAWC is not set
# CONFIG_USB_QUICKCAM_MESSENGER is not set
# CONFIG_USB_ET61X251 is not set
# CONFIG_VIDEO_OVCAMCHIP is not set
# CONFIG_USB_W9968CF is not set
CONFIG_USB_OV511=m
CONFIG_USB_SE401=m
# CONFIG_USB_SN9C102 is not set
# CONFIG_USB_STV680 is not set
# CONFIG_USB_ZC0301 is not set
# CONFIG_USB_PWC is not set
# CONFIG_USB_ZR364XX is not set
# CONFIG_USB_STKWEBCAM is not set
# CONFIG_USB_S2255 is not set
# CONFIG_SOC_CAMERA is not set
# CONFIG_RADIO_ADAPTERS is not set
# CONFIG_DAB is not set
#
# Graphics support
#
CONFIG_AGP=y
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_ATI is not set
# CONFIG_AGP_AMD is not set
# CONFIG_AGP_AMD64 is not set
# CONFIG_AGP_INTEL is not set
CONFIG_AGP_NVIDIA=y
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_SWORKS is not set
# CONFIG_AGP_VIA is not set
# CONFIG_AGP_EFFICEON is not set
CONFIG_DRM=y
# CONFIG_DRM_TDFX is not set
# CONFIG_DRM_R128 is not set
# CONFIG_DRM_RADEON is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
# CONFIG_DRM_SAVAGE is not set
# CONFIG_VGASTATE is not set
# CONFIG_VIDEO_OUTPUT_CONTROL is not set
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
# CONFIG_FB_DDC is not set
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
CONFIG_FB_FOREIGN_ENDIAN=y
CONFIG_FB_BOTH_ENDIAN=y
# CONFIG_FB_BIG_ENDIAN is not set
# CONFIG_FB_LITTLE_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
# CONFIG_FB_IMSTT is not set
# CONFIG_FB_VGA16 is not set
CONFIG_FB_VESA=y
# CONFIG_FB_EFI is not set
# CONFIG_FB_IMAC is not set
# CONFIG_FB_N411 is not set
# CONFIG_FB_HGA is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_NVIDIA is not set
# CONFIG_FB_RIVA is not set
# CONFIG_FB_I810 is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
# CONFIG_FB_KYRO is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_VOODOO1 is not set
# CONFIG_FB_VT8623 is not set
# CONFIG_FB_CYBLA is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
# CONFIG_FB_PM3 is not set
# CONFIG_FB_CARMINE is not set
# CONFIG_FB_GEODE is not set
# CONFIG_FB_VIRTUAL is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=m
# CONFIG_BACKLIGHT_CORGI is not set
# CONFIG_BACKLIGHT_PROGEAR is not set
#
# Display device support
#
CONFIG_DISPLAY_SUPPORT=y
#
# Display hardware drivers
#
#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=128
CONFIG_VIDEO_SELECT=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_LOGO is not set
CONFIG_SOUND=m
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
# CONFIG_SND_RTCTIMER is not set
# CONFIG_SND_DYNAMIC_MINORS is not set
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
CONFIG_SND_DEBUG=y
# CONFIG_SND_DEBUG_VERBOSE is not set
CONFIG_SND_PCM_XRUN_DEBUG=y
CONFIG_SND_VMASTER=y
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
# CONFIG_SND_PCSP is not set
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_MTS64 is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
# CONFIG_SND_PORTMAN2X4 is not set
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
CONFIG_SND_PCI=y
# CONFIG_SND_AD1889 is not set
# CONFIG_SND_ALS300 is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_ALI5451 is not set
# CONFIG_SND_ATIIXP is not set
# CONFIG_SND_ATIIXP_MODEM is not set
# CONFIG_SND_AU8810 is not set
# CONFIG_SND_AU8820 is not set
# CONFIG_SND_AU8830 is not set
# CONFIG_SND_AW2 is not set
# CONFIG_SND_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CA0106 is not set
# CONFIG_SND_CMIPCI is not set
# CONFIG_SND_OXYGEN is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CS5530 is not set
# CONFIG_SND_CS5535AUDIO is not set
# CONFIG_SND_DARLA20 is not set
# CONFIG_SND_GINA20 is not set
# CONFIG_SND_LAYLA20 is not set
# CONFIG_SND_DARLA24 is not set
# CONFIG_SND_GINA24 is not set
# CONFIG_SND_LAYLA24 is not set
# CONFIG_SND_MONA is not set
# CONFIG_SND_MIA is not set
# CONFIG_SND_ECHO3G is not set
# CONFIG_SND_INDIGO is not set
# CONFIG_SND_INDIGOIO is not set
# CONFIG_SND_INDIGODJ is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_EMU10K1X is not set
# CONFIG_SND_ENS1370 is not set
# CONFIG_SND_ENS1371 is not set
# CONFIG_SND_ES1938 is not set
# CONFIG_SND_ES1968 is not set
# CONFIG_SND_FM801 is not set
# CONFIG_SND_HDA_INTEL is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_HDSPM is not set
# CONFIG_SND_HIFIER is not set
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_MAESTRO3 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_PCXHR is not set
# CONFIG_SND_RIPTIDE is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_SIS7019 is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_TRIDENT is not set
# CONFIG_SND_VIA82XX is not set
# CONFIG_SND_VIA82XX_MODEM is not set
# CONFIG_SND_VIRTUOSO is not set
# CONFIG_SND_VX222 is not set
# CONFIG_SND_YMFPCI is not set
# CONFIG_SND_USB is not set
# CONFIG_SND_SOC is not set
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=m
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HID_DEBUG is not set
# CONFIG_HIDRAW is not set
#
# USB Input Devices
#
CONFIG_USB_HID=m
# CONFIG_USB_HIDINPUT_POWERBOOK is not set
# CONFIG_HID_FF is not set
# CONFIG_USB_HIDDEV is not set
#
# USB HID Boot Protocol drivers
#
# CONFIG_USB_KBD is not set
# CONFIG_USB_MOUSE is not set
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=m
# CONFIG_USB_DEBUG is not set
# CONFIG_USB_ANNOUNCE_NEW_DEVICES is not set
#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_DEVICE_CLASS is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set
CONFIG_USB_WUSB=m
#
# USB Host Controller Drivers
#
CONFIG_USB_C67X00_HCD=m
CONFIG_USB_EHCI_HCD=m
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_EHCI_TT_NEWSCHED is not set
CONFIG_USB_ISP116X_HCD=m
CONFIG_USB_ISP1760_HCD=m
# CONFIG_USB_ISP1760_PCI is not set
CONFIG_USB_OHCI_HCD=m
CONFIG_USB_OHCI_HCD_SSB=y
# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=m
# CONFIG_USB_U132_HCD is not set
CONFIG_USB_SL811_HCD=m
CONFIG_USB_R8A66597_HCD=m
CONFIG_USB_WHCI_HCD=m
CONFIG_USB_HWA_HCD=m
#
# USB Device Class drivers
#
# CONFIG_USB_ACM is not set
CONFIG_USB_PRINTER=m
CONFIG_USB_WDM=m
#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#
#
# may also be needed; see USB_STORAGE Help for more information
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
CONFIG_USB_STORAGE_DATAFAB=y
CONFIG_USB_STORAGE_FREECOM=y
CONFIG_USB_STORAGE_ISD200=y
CONFIG_USB_STORAGE_DPCM=y
CONFIG_USB_STORAGE_USBAT=y
CONFIG_USB_STORAGE_SDDR09=y
CONFIG_USB_STORAGE_SDDR55=y
CONFIG_USB_STORAGE_JUMPSHOT=y
CONFIG_USB_STORAGE_ALAUDA=y
CONFIG_USB_STORAGE_ONETOUCH=y
CONFIG_USB_STORAGE_KARMA=y
CONFIG_USB_STORAGE_CYPRESS_ATACB=y
CONFIG_USB_LIBUSUAL=y
#
# USB Imaging devices
#
CONFIG_USB_MDC800=m
CONFIG_USB_MICROTEK=m
CONFIG_USB_MON=y
#
# USB port drivers
#
CONFIG_USB_USS720=m
CONFIG_USB_SERIAL=m
# CONFIG_USB_EZUSB is not set
# CONFIG_USB_SERIAL_GENERIC is not set
# CONFIG_USB_SERIAL_AIRCABLE is not set
# CONFIG_USB_SERIAL_AIRPRIME is not set
# CONFIG_USB_SERIAL_ARK3116 is not set
# CONFIG_USB_SERIAL_BELKIN is not set
# CONFIG_USB_SERIAL_CH341 is not set
# CONFIG_USB_SERIAL_WHITEHEAT is not set
# CONFIG_USB_SERIAL_DIGI_ACCELEPORT is not set
# CONFIG_USB_SERIAL_CP2101 is not set
# CONFIG_USB_SERIAL_CYPRESS_M8 is not set
# CONFIG_USB_SERIAL_EMPEG is not set
# CONFIG_USB_SERIAL_FTDI_SIO is not set
# CONFIG_USB_SERIAL_FUNSOFT is not set
# CONFIG_USB_SERIAL_VISOR is not set
# CONFIG_USB_SERIAL_IPAQ is not set
# CONFIG_USB_SERIAL_IR is not set
# CONFIG_USB_SERIAL_EDGEPORT is not set
# CONFIG_USB_SERIAL_EDGEPORT_TI is not set
# CONFIG_USB_SERIAL_GARMIN is not set
# CONFIG_USB_SERIAL_IPW is not set
# CONFIG_USB_SERIAL_IUU is not set
# CONFIG_USB_SERIAL_KEYSPAN_PDA is not set
# CONFIG_USB_SERIAL_KEYSPAN_PDA_FIRMWARE is not set
# CONFIG_USB_SERIAL_KEYSPAN is not set
# CONFIG_USB_SERIAL_KLSI is not set
# CONFIG_USB_SERIAL_KOBIL_SCT is not set
# CONFIG_USB_SERIAL_MCT_U232 is not set
# CONFIG_USB_SERIAL_MOS7720 is not set
# CONFIG_USB_SERIAL_MOS7840 is not set
# CONFIG_USB_SERIAL_MOTOROLA is not set
# CONFIG_USB_SERIAL_NAVMAN is not set
# CONFIG_USB_SERIAL_PL2303 is not set
# CONFIG_USB_SERIAL_OTI6858 is not set
# CONFIG_USB_SERIAL_SPCP8X5 is not set
# CONFIG_USB_SERIAL_HP4X is not set
# CONFIG_USB_SERIAL_SAFE is not set
# CONFIG_USB_SERIAL_SIERRAWIRELESS is not set
# CONFIG_USB_SERIAL_TI is not set
# CONFIG_USB_SERIAL_CYBERJACK is not set
# CONFIG_USB_SERIAL_XIRCOM is not set
# CONFIG_USB_SERIAL_XIRCOM_FIRMWARE is not set
# CONFIG_USB_SERIAL_OPTION is not set
# CONFIG_USB_SERIAL_OMNINET is not set
# CONFIG_USB_SERIAL_DEBUG is not set
#
# USB Miscellaneous drivers
#
CONFIG_USB_EMI62=m
# CONFIG_USB_EMI62_FIRMWARE is not set
CONFIG_USB_EMI26=m
# CONFIG_USB_EMI26_FIRMWARE is not set
CONFIG_USB_ADUTUX=m
CONFIG_USB_AUERSWALD=m
CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_BERRY_CHARGE=m
CONFIG_USB_LED=m
CONFIG_USB_CYPRESS_CY7C63=m
CONFIG_USB_CYTHERM=m
# CONFIG_USB_PHIDGET is not set
# CONFIG_USB_IDMOUSE is not set
CONFIG_USB_FTDI_ELAN=m
CONFIG_USB_APPLEDISPLAY=m
CONFIG_USB_SISUSBVGA=m
# CONFIG_USB_SISUSBVGA_CON is not set
CONFIG_USB_LD=m
CONFIG_USB_TRANCEVIBRATOR=m
CONFIG_USB_IOWARRIOR=m
# CONFIG_USB_TEST is not set
# CONFIG_USB_ISIGHTFW is not set
# CONFIG_USB_GOTEMP is not set
# CONFIG_USB_GADGET is not set
CONFIG_UWB=m
CONFIG_UWB_HWA=m
CONFIG_UWB_WHCI=m
# CONFIG_UWB_WLP is not set
# CONFIG_UWB_I1480U is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m
#
# LED drivers
#
# CONFIG_LEDS_PCA9532 is not set
CONFIG_LEDS_CLEVO_MAIL=m
# CONFIG_LEDS_PCA955X is not set
#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_HEARTBEAT=m
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
# CONFIG_ACCESSIBILITY is not set
# CONFIG_INFINIBAND is not set
# CONFIG_EDAC is not set
# CONFIG_RTC_CLASS is not set
CONFIG_DMADEVICES=y
#
# DMA Devices
#
CONFIG_INTEL_IOATDMA=m
CONFIG_DMA_ENGINE=y
#
# DMA Clients
#
# CONFIG_NET_DMA is not set
CONFIG_DCA=m
# CONFIG_AUXDISPLAY is not set
# CONFIG_UIO is not set
#
# Firmware Drivers
#
CONFIG_EDD=m
# CONFIG_EDD_OFF is not set
CONFIG_EFI_VARS=m
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set
CONFIG_DMIID=y
# CONFIG_ISCSI_IBFT_FIND is not set
#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
# CONFIG_EXT2_FS_SECURITY is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
# CONFIG_EXT3_FS_SECURITY is not set
CONFIG_EXT4DEV_FS=m
CONFIG_EXT4DEV_FS_XATTR=y
# CONFIG_EXT4DEV_FS_POSIX_ACL is not set
# CONFIG_EXT4DEV_FS_SECURITY is not set
CONFIG_JBD=y
CONFIG_JBD_DEBUG=y
CONFIG_JBD2=m
CONFIG_JBD2_DEBUG=y
CONFIG_FS_MBCACHE=y
# CONFIG_REISER4_FS is not set
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=y
CONFIG_GENERIC_ACL=y
#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y
#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set
#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m
#
# Layered filesystems
#
CONFIG_UNION_FS=m
# CONFIG_UNION_FS_XATTR is not set
# CONFIG_UNION_FS_DEBUG is not set
#
# Miscellaneous filesystems
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
CONFIG_HFS_FS=m
CONFIG_HFSPLUS_FS=m
# 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_VXFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_OMFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set
CONFIG_NETWORK_FILESYSTEMS=y
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_SMB_FS is not set
CONFIG_CIFS=m
# CONFIG_CIFS_STATS is not set
# CONFIG_CIFS_WEAK_PW_HASH is not set
# CONFIG_CIFS_XATTR is not set
# CONFIG_CIFS_DEBUG2 is not set
CONFIG_CIFS_EXPERIMENTAL=y
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
# CONFIG_ATARI_PARTITION is not set
CONFIG_MAC_PARTITION=y
CONFIG_MSDOS_PARTITION=y
# CONFIG_BSD_DISKLABEL is not set
# CONFIG_MINIX_SUBPARTITION is not set
# CONFIG_SOLARIS_X86_PARTITION is not set
# CONFIG_UNIXWARE_DISKLABEL is not set
CONFIG_LDM_PARTITION=y
CONFIG_LDM_DEBUG=y
# CONFIG_SGI_PARTITION is not set
# CONFIG_ULTRIX_PARTITION is not set
# CONFIG_SUN_PARTITION is not set
# CONFIG_KARMA_PARTITION is not set
# CONFIG_EFI_PARTITION is not set
# CONFIG_SYSV68_PARTITION is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
CONFIG_NLS_ISO8859_15=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y
CONFIG_DLM=m
CONFIG_DLM_DEBUG=y
#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_UNUSED_SYMBOLS=y
# CONFIG_PAGE_OWNER is not set
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_SCHEDSTATS is not set
# CONFIG_TIMER_STATS is not set
CONFIG_DEBUG_OBJECTS=y
CONFIG_DEBUG_OBJECTS_SELFTEST=y
CONFIG_DEBUG_OBJECTS_FREE=y
CONFIG_DEBUG_OBJECTS_TIMERS=y
CONFIG_SLUB_DEBUG_ON=y
# CONFIG_SLUB_STATS is not set
CONFIG_DEBUG_PREEMPT=y
CONFIG_DEBUG_RT_MUTEXES=y
CONFIG_DEBUG_PI_LIST=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_PROVE_LOCKING=y
CONFIG_LOCKDEP=y
# CONFIG_LOCK_STAT is not set
CONFIG_DEBUG_LOCKDEP=y
CONFIG_TRACE_IRQFLAGS=y
CONFIG_DEBUG_SPINLOCK_SLEEP=y
CONFIG_STACKTRACE=y
# CONFIG_DEBUG_KOBJECT is not set
CONFIG_DEBUG_HIGHMEM=y
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_INFO is not set
CONFIG_DEBUG_VM=y
# CONFIG_DEBUG_WRITECOUNT is not set
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_SG=y
CONFIG_FRAME_POINTER=y
# CONFIG_DEBUG_SYNCHRO_TEST is not set
# CONFIG_PROFILE_LIKELY is not set
# CONFIG_BOOT_PRINTK_DELAY is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_LATENCYTOP is not set
CONFIG_HAVE_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_TRACING=y
# CONFIG_FTRACE is not set
# CONFIG_IRQSOFF_TRACER is not set
# CONFIG_PREEMPT_TRACER is not set
# CONFIG_SYSPROF_TRACER is not set
# CONFIG_SCHED_TRACER is not set
# CONFIG_CONTEXT_SWITCH_TRACER is not set
# CONFIG_FTRACE_STARTUP_TEST is not set
# CONFIG_PROVIDE_OHCI1394_DMA_INIT is not set
# CONFIG_FIREWIRE_OHCI_REMOTE_DMA is not set
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
# CONFIG_KGDB is not set
# CONFIG_KERNEL_TESTS is not set
CONFIG_NONPROMISC_DEVMEM=y
CONFIG_EARLY_PRINTK=y
CONFIG_DEBUG_STACKOVERFLOW=y
# CONFIG_DEBUG_STACK_USAGE is not set
CONFIG_DEBUG_PAGEALLOC=y
# CONFIG_X86_PTDUMP is not set
CONFIG_DEBUG_RODATA=y
CONFIG_DEBUG_RODATA_TEST=y
# CONFIG_DEBUG_NX_TEST is not set
CONFIG_4KSTACKS=y
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
CONFIG_DOUBLEFAULT=y
CONFIG_MMIOTRACE_HOOKS=y
CONFIG_MMIOTRACE=y
# CONFIG_MMIOTRACE_TEST is not set
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
# CONFIG_IO_DELAY_0XED is not set
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=0
# CONFIG_DEBUG_BOOT_PARAMS is not set
CONFIG_CPA_DEBUG=y
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITY_FILE_CAPABILITIES is not set
CONFIG_XOR_BLOCKS=m
CONFIG_ASYNC_CORE=m
CONFIG_ASYNC_MEMCPY=m
CONFIG_ASYNC_XOR=m
CONFIG_CRYPTO=y
#
# Crypto core or helper
#
CONFIG_CRYPTO_ALGAPI=m
CONFIG_CRYPTO_AEAD=m
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_HASH=m
CONFIG_CRYPTO_MANAGER=m
# CONFIG_CRYPTO_GF128MUL is not set
# CONFIG_CRYPTO_NULL is not set
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_AUTHENC=m
# CONFIG_CRYPTO_TEST is not set
#
# Authenticated Encryption with Associated Data
#
# CONFIG_CRYPTO_CCM is not set
# CONFIG_CRYPTO_GCM is not set
# CONFIG_CRYPTO_SEQIV is not set
#
# Block modes
#
CONFIG_CRYPTO_CBC=m
# CONFIG_CRYPTO_CTR is not set
# CONFIG_CRYPTO_CTS is not set
CONFIG_CRYPTO_ECB=m
# CONFIG_CRYPTO_LRW is not set
# CONFIG_CRYPTO_PCBC is not set
# CONFIG_CRYPTO_XTS is not set
#
# Hash modes
#
CONFIG_CRYPTO_HMAC=m
# CONFIG_CRYPTO_XCBC is not set
#
# Digest
#
# CONFIG_CRYPTO_CRC32C is not set
# CONFIG_CRYPTO_MD4 is not set
CONFIG_CRYPTO_MD5=m
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_RMD128 is not set
# CONFIG_CRYPTO_RMD160 is not set
# CONFIG_CRYPTO_RMD256 is not set
# CONFIG_CRYPTO_RMD320 is not set
CONFIG_CRYPTO_SHA1=m
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_TGR192 is not set
# CONFIG_CRYPTO_WP512 is not set
#
# Ciphers
#
CONFIG_CRYPTO_AES=m
# CONFIG_CRYPTO_AES_586 is not set
# CONFIG_CRYPTO_ANUBIS is not set
CONFIG_CRYPTO_ARC4=m
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_CAMELLIA is not set
# CONFIG_CRYPTO_CAST5 is not set
# CONFIG_CRYPTO_CAST6 is not set
CONFIG_CRYPTO_DES=m
# CONFIG_CRYPTO_FCRYPT is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_SALSA20 is not set
# CONFIG_CRYPTO_SALSA20_586 is not set
# CONFIG_CRYPTO_SEED is not set
# CONFIG_CRYPTO_SERPENT is not set
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_TWOFISH_586 is not set
#
# Compression
#
CONFIG_CRYPTO_DEFLATE=m
# CONFIG_CRYPTO_LZO is not set
CONFIG_CRYPTO_HW=y
# CONFIG_CRYPTO_DEV_PADLOCK is not set
# CONFIG_CRYPTO_DEV_GEODE is not set
# CONFIG_CRYPTO_DEV_HIFN_795X is not set
CONFIG_HAVE_KVM=y
# CONFIG_VIRTUALIZATION is not set
#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
# CONFIG_CRC_CCITT is not set
CONFIG_CRC16=m
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=m
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=m
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
# CONFIG_TRACE is not set
On Tue, 10 Jun 2008 16:50:26 +0200
Michael Buesch <[email protected]> wrote:
> On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
> > This change comes from
> >
> > commit 353c409463ecba63c3a41a992d3f5fba935eada9
> > Author: FUJITA Tomonori <[email protected]>
> > Date: Fri May 23 19:02:30 2008 +0000
>
>
> Ok, FUJITA Tomonori, please make sure a patch like the following goes
> into the same trees that you submitted commit 353c409 to.
> Also make sure to check b43legacy. I _guess_ you might have added
> the same bug there.
Ah, sorry about the bug.
>From a quick look, mainline needs the same fix too?
b43_dma_mapping_error calls unmap_descbuffer() on the failure, which
assumes that ring->dev is set up properly.
Miles Lane wrote:
> I got a slightly different BUG with this patch applied:
>
> BUG: unable to handle kernel NULL pointer dereference at 00000000
> IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
> *pde = 00000000
> Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
> last sysfs file:
> /sys/devices/pci0000:00/0000:00:08.0/0000:01:06.0/ssb0:0/firmware/ssb0:0/loading
> Modules linked in: sbs sbshc wmi battery iptable_filter ip_tables
> x_tables ac sbp2 rtc arc4 ecb crypto_blkcipher cryptomgr crypto_algapi
> b43 mac80211 cfg80211 led_class snd_intel8x0 snd_ac97_codec ac97_bus
> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss
> snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore
> snd_page_alloc i2c_nforce2 i2c_core button ohci1394 3c59x ieee1394
> forcedeth ehci_hcd ohci_hcd usbcore thermal processor fan thermal_sys
Miles,
If you have time, please cd to the kernel root directory and run the
command 'objdump -d -l drivers/net/wireless/b43/dma.o > dmadump'. You
may have to install the objdump package. In the file dmadump, find the
line that contains b43_dma_mapping_error. On my system it is
0000000000000085 <b43_dma_mapping_error>: Note, I use x86_64 and yours
will likely be different.
Note the address (0x85 in my case), add the offset (0x16) and find the
line with the error. You can use KCalc in hexadecimal mode if you are
not comfortable with doing addition in base 16. Please report the
source line and instruction that failed.
Larry
On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
> This change comes from
>
> commit 353c409463ecba63c3a41a992d3f5fba935eada9
> Author: FUJITA Tomonori <[email protected]>
> Date: Fri May 23 19:02:30 2008 +0000
Ok, FUJITA Tomonori, please make sure a patch like the following goes
into the same trees that you submitted commit 353c409 to.
Also make sure to check b43legacy. I _guess_ you might have added
the same bug there.
Index: wireless-testing/drivers/net/wireless/b43/dma.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43/dma.c 2008-06-10 13:58:22.000000000 +0200
+++ wireless-testing/drivers/net/wireless/b43/dma.c 2008-06-10 16:48:53.000000000 +0200
@@ -802,6 +802,7 @@ struct b43_dmaring *b43_setup_dmaring(st
if (!ring)
goto out;
ring->type = type;
+ ring->dev = dev;
nr_slots = B43_RXRING_SLOTS;
if (for_tx)
@@ -853,7 +854,6 @@ struct b43_dmaring *b43_setup_dmaring(st
DMA_TO_DEVICE);
}
- ring->dev = dev;
ring->nr_slots = nr_slots;
ring->mmio_base = b43_dmacontroller_base(type, controller_index);
ring->index = controller_index;
> dma-mapping-add-the-device-argument-to-dma_mapping_error
>
> Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
> architecture does:
>
> This enables us to cleanly fix the Calgary IOMMU issue that some devices
> are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).
>
> I think that per-device dma_mapping_ops support would be also helpful for
> KVM people to support PCI passthrough but Andi thinks that this makes it
> difficult to support the PCI passthrough (see the above thread). So I
> CC'ed this to KVM camp. Comments are appreciated.
>
> A pointer to dma_mapping_ops to struct dev_archdata is added. If the
> pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's
> NULL, the system-wide dma_ops pointer is used as before.
>
> If it's useful for KVM people, I plan to implement a mechanism to register
> a hook called when a new pci (or dma capable) device is created (it works
> with hot plugging). It enables IOMMUs to set up an appropriate
> dma_mapping_ops per device.
>
> The major obstacle is that dma_mapping_error doesn't take a pointer to the
> device unlike other DMA operations. So x86 can't have dma_mapping_ops per
> device. Note all the POWER IOMMUs use the same dma_mapping_error function
> so this is not a problem for POWER but x86 IOMMUs use different
> dma_mapping_error functions.
>
> The first patch adds the device argument to dma_mapping_error. The patch
> is trivial but large since it touches lots of drivers and dma-mapping.h in
> all the architecture.
>
> (Added to Cc.)
>
>
> Vegard
>
--
Greetings Michael.
On Wednesday 11 June 2008 02:58:44 FUJITA Tomonori wrote:
> On Tue, 10 Jun 2008 16:50:26 +0200
> Michael Buesch <[email protected]> wrote:
>
> > On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
> > > This change comes from
> > >
> > > commit 353c409463ecba63c3a41a992d3f5fba935eada9
> > > Author: FUJITA Tomonori <[email protected]>
> > > Date: Fri May 23 19:02:30 2008 +0000
> >
> >
> > Ok, FUJITA Tomonori, please make sure a patch like the following goes
> > into the same trees that you submitted commit 353c409 to.
> > Also make sure to check b43legacy. I _guess_ you might have added
> > the same bug there.
>
> Ah, sorry about the bug.
>
> From a quick look, mainline needs the same fix too?
>
> b43_dma_mapping_error calls unmap_descbuffer() on the failure, which
> assumes that ring->dev is set up properly.
Yeah ok. That's an unlikely error path.
The new bug is in the main path which will always trigger.
Next time please send _any_ patch for review to me and to the wireless list.
Please tell me which trees this bug has been merged to. Is it already in
Linus' tree?
--
Greetings Michael.
On Wed, 11 Jun 2008 12:05:10 +0200
Michael Buesch <[email protected]> wrote:
> On Wednesday 11 June 2008 02:58:44 FUJITA Tomonori wrote:
> > On Tue, 10 Jun 2008 16:50:26 +0200
> > Michael Buesch <[email protected]> wrote:
> >
> > > On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
> > > > This change comes from
> > > >
> > > > commit 353c409463ecba63c3a41a992d3f5fba935eada9
> > > > Author: FUJITA Tomonori <[email protected]>
> > > > Date: Fri May 23 19:02:30 2008 +0000
> > >
> > >
> > > Ok, FUJITA Tomonori, please make sure a patch like the following goes
> > > into the same trees that you submitted commit 353c409 to.
> > > Also make sure to check b43legacy. I _guess_ you might have added
> > > the same bug there.
> >
> > Ah, sorry about the bug.
> >
> > From a quick look, mainline needs the same fix too?
> >
> > b43_dma_mapping_error calls unmap_descbuffer() on the failure, which
> > assumes that ring->dev is set up properly.
>
> Yeah ok. That's an unlikely error path.
Yeah, it doesn't always happen, but it possible that it happens?
> The new bug is in the main path which will always trigger.
Right.
> Next time please send _any_ patch for review to me and to the wireless list.
> Please tell me which trees this bug has been merged to. Is it already in
> Linus' tree?
No, seems that there are some confusion. This is just in -mm to find
problems:
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error.patch
This patch is a trivial but changes lots of places. So it's difficult
to get an ACK on all the places.
This patch need several fixes but all the patches are trivial except
for b34. I guess that it is because b34 handles devices for
dma-mapping in an uncommon way.
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-b34-fix.patch
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-bnx2x.patch
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-sge-fix.patch
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-sparc32.patch
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-svc_rdma-fix.patch
On Tuesday 10 June 2008 16:29:17 Vegard Nossum wrote:
> On Tue, Jun 10, 2008 at 4:23 PM, Michael Buesch <[email protected]> wrote:
> > On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
> >> BUG: unable to handle kernel NULL pointer dereference at 00000000
> >> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
> >
> >
> > It seems to crash at
> > 60 extern const struct dma_mapping_ops *dma_ops;
> > 61
> > 62 static inline int dma_mapping_error(dma_addr_t dma_addr)
> > 63 {
> > 64 if (dma_ops->mapping_error)
> > 65 return dma_ops->mapping_error(dma_addr);
> > 66
> > 67 return (dma_addr == bad_dma_address);
> > 68 }
>
> No, this is wrong.
>
> /* Check if a DMA mapping address is invalid. */
> static bool b43_dma_mapping_error(struct b43_dmaring *ring,
> dma_addr_t addr,
> size_t buffersize, bool dma_to_device)
> {
> if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>
> It crashes on this line ---^
Which calls dma_mapping_error(), correct?
But you are right. I see the bug now.
ring->dev is assigned after the call.
I wonder why it works reliably on all of my machines.
--
Greetings Michael.
On 6/10/08, Miles Lane <[email protected]> wrote:
> Sorry, I forgot to label the kernel tree. It is 2.6.26-rc5-mm2.
No worries, it was in your config file :-)
Thanks for reporting.
On 6/10/08, Michael Buesch <[email protected]> wrote:
> Ok, FUJITA Tomonori, please make sure a patch like the following goes
> into the same trees that you submitted commit 353c409 to.
> Also make sure to check b43legacy. I _guess_ you might have added
> the same bug there.
Can you please also make sure that Miles Lane appears with a
Reported-by line in your patch? Thanks :-) Also: Nice fix!
Vegard
--
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
-- E. W. Dijkstra, EWD1036
On Tue, Jun 10, 2008 at 4:23 PM, Michael Buesch <[email protected]> wrote:
> On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
>
>
> It seems to crash at
> 60 extern const struct dma_mapping_ops *dma_ops;
> 61
> 62 static inline int dma_mapping_error(dma_addr_t dma_addr)
> 63 {
> 64 if (dma_ops->mapping_error)
> 65 return dma_ops->mapping_error(dma_addr);
> 66
> 67 return (dma_addr == bad_dma_address);
> 68 }
No, this is wrong.
/* Check if a DMA mapping address is invalid. */
static bool b43_dma_mapping_error(struct b43_dmaring *ring,
dma_addr_t addr,
size_t buffersize, bool dma_to_device)
{
if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
It crashes on this line ---^
Vegard
--
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
-- E. W. Dijkstra, EWD1036
I got a slightly different BUG with this patch applied:
BUG: unable to handle kernel NULL pointer dereference at 00000000
IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
*pde = 00000000
Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
last sysfs file:
/sys/devices/pci0000:00/0000:00:08.0/0000:01:06.0/ssb0:0/firmware/ssb0:0/loading
Modules linked in: sbs sbshc wmi battery iptable_filter ip_tables
x_tables ac sbp2 rtc arc4 ecb crypto_blkcipher cryptomgr crypto_algapi
b43 mac80211 cfg80211 led_class snd_intel8x0 snd_ac97_codec ac97_bus
snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore
snd_page_alloc i2c_nforce2 i2c_core button ohci1394 3c59x ieee1394
forcedeth ehci_hcd ohci_hcd usbcore thermal processor fan thermal_sys
Pid: 4259, comm: NetworkManager Not tainted (2.6.26-rc5-mm2 #9)
EIP: 0060:[<f89e3d41>] EFLAGS: 00010296 CPU: 0
EIP is at b43_dma_mapping_error+0x16/0x97 [b43]
EAX: f6f205a0 EBX: c0416790 ECX: 0000006e EDX: 00000000
ESI: 0000006e EDI: 36060000 EBP: f6259b10 ESP: f6259afc
DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Process NetworkManager (pid: 4259, ti=f6259000 task=f78e8000 task.ti=f6259000)
Stack: 01107455 0000006e c0416790 f6f205a0 f6dfc9b0 f6259b64 f89e41d5 00000001
f78e8000 c013506c f6dfc9b0 f6259b38 c0135026 01ffffff 00000001 00000000
00000080 36060000 00000000 f6259b5c c01063c4 f7962940 00000000 3fffffff
Call Trace:
[<f89e41d5>] ? b43_setup_dmaring+0xf2/0x51e [b43]
[<c013506c>] ? trace_hardirqs_on+0xb/0xd
[<c0135026>] ? trace_hardirqs_on_caller+0xe5/0x120
[<c01063c4>] ? dma_set_mask+0x1a/0x37
[<f89e4cc1>] ? b43_dma_init+0x21d/0x23b [b43]
[<f89d6d2f>] ? b43_wireless_core_init+0x4a5/0x6d9 [b43]
[<f89d7528>] ? b43_op_start+0xab/0xea [b43]
[<f89b2ca9>] ? ieee80211_open+0x1e5/0x448 [mac80211]
[<c013506c>] ? trace_hardirqs_on+0xb/0xd
[<c02ccf41>] ? dev_open+0x66/0x99
[<c02cbcf6>] ? dev_change_flags+0x9c/0x14a
[<c02d3361>] ? do_setlink+0x227/0x2d7
[<c031fca4>] ? _read_unlock+0x27/0x3c
[<c02d4318>] ? rtnl_setlink+0xa4/0xbb
[<c0135026>] ? trace_hardirqs_on_caller+0xe5/0x120
[<c02d4274>] ? rtnl_setlink+0x0/0xbb
[<c02d3f4e>] ? rtnetlink_rcv_msg+0x192/0x1ac
[<c02d3dbc>] ? rtnetlink_rcv_msg+0x0/0x1ac
[<c02d92e7>] ? netlink_rcv_skb+0x30/0x75
[<c02d3db4>] ? rtnetlink_rcv+0x17/0x1f
[<c02d90ce>] ? netlink_unicast+0x1c9/0x242
[<c02d9bf9>] ? netlink_sendmsg+0x21b/0x228
[<c02c22e2>] ? sock_sendmsg+0xc9/0xe0
[<c012a6f9>] ? autoremove_wake_function+0x0/0x30
[<c012a6f9>] ? autoremove_wake_function+0x0/0x30
[<c0135f43>] ? __lock_acquire+0xb2e/0xb4a
[<c013506c>] ? trace_hardirqs_on+0xb/0xd
[<c0135026>] ? trace_hardirqs_on_caller+0xe5/0x120
[<c01efe08>] ? copy_from_user+0x3b/0x5e
[<c02c8930>] ? verify_iovec+0x40/0x70
[<c02c2446>] ? sys_sendmsg+0x14d/0x1a8
[<c02c2d34>] ? sys_recvmsg+0x172/0x17f
[<c0135f43>] ? __lock_acquire+0xb2e/0xb4a
[<c0156352>] ? handle_mm_fault+0x220/0x600
[<c02c32d2>] ? sys_socketcall+0x13e/0x171
[<c01ef9f8>] ? trace_hardirqs_on_thunk+0xc/0x10
[<c0102c95>] ? sysenter_past_esp+0x6a/0xa5
=======================
Code: c8 74 0d 41 75 05 42 b3 40 74 05 bb 1e 00 00 00 89 d8 5b c9 c3
55 89 e5 57 89 d7 56 89 ce 53 83 ec 08 8a 55 08 88 55 ef 8b 50 58 <8b>
12 8b 52 08 89 55 f0 8b 40 34 83 f8 1e 74 07 83 f8 20 75 5b
EIP: [<f89e3d41>] b43_dma_mapping_error+0x16/0x97 [b43] SS:ESP 0068:f6259afc
---[ end trace 7a51b359a273191c ]---
On Tue, Jun 10, 2008 at 10:50 AM, Michael Buesch <[email protected]> wrote:
> On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
>> This change comes from
>>
>> commit 353c409463ecba63c3a41a992d3f5fba935eada9
>> Author: FUJITA Tomonori <[email protected]>
>> Date: Fri May 23 19:02:30 2008 +0000
>
>
> Ok, FUJITA Tomonori, please make sure a patch like the following goes
> into the same trees that you submitted commit 353c409 to.
> Also make sure to check b43legacy. I _guess_ you might have added
> the same bug there.
>
> Index: wireless-testing/drivers/net/wireless/b43/dma.c
> ===================================================================
> --- wireless-testing.orig/drivers/net/wireless/b43/dma.c 2008-06-10 13:58:22.000000000 +0200
> +++ wireless-testing/drivers/net/wireless/b43/dma.c 2008-06-10 16:48:53.000000000 +0200
> @@ -802,6 +802,7 @@ struct b43_dmaring *b43_setup_dmaring(st
> if (!ring)
> goto out;
> ring->type = type;
> + ring->dev = dev;
>
> nr_slots = B43_RXRING_SLOTS;
> if (for_tx)
> @@ -853,7 +854,6 @@ struct b43_dmaring *b43_setup_dmaring(st
> DMA_TO_DEVICE);
> }
>
> - ring->dev = dev;
> ring->nr_slots = nr_slots;
> ring->mmio_base = b43_dmacontroller_base(type, controller_index);
> ring->index = controller_index;
>
>
>> dma-mapping-add-the-device-argument-to-dma_mapping_error
>>
>> Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
>> architecture does:
>>
>> This enables us to cleanly fix the Calgary IOMMU issue that some devices
>> are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).
>>
>> I think that per-device dma_mapping_ops support would be also helpful for
>> KVM people to support PCI passthrough but Andi thinks that this makes it
>> difficult to support the PCI passthrough (see the above thread). So I
>> CC'ed this to KVM camp. Comments are appreciated.
>>
>> A pointer to dma_mapping_ops to struct dev_archdata is added. If the
>> pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's
>> NULL, the system-wide dma_ops pointer is used as before.
>>
>> If it's useful for KVM people, I plan to implement a mechanism to register
>> a hook called when a new pci (or dma capable) device is created (it works
>> with hot plugging). It enables IOMMUs to set up an appropriate
>> dma_mapping_ops per device.
>>
>> The major obstacle is that dma_mapping_error doesn't take a pointer to the
>> device unlike other DMA operations. So x86 can't have dma_mapping_ops per
>> device. Note all the POWER IOMMUs use the same dma_mapping_error function
>> so this is not a problem for POWER but x86 IOMMUs use different
>> dma_mapping_error functions.
>>
>> The first patch adds the device argument to dma_mapping_error. The patch
>> is trivial but large since it touches lots of drivers and dma-mapping.h in
>> all the architecture.
>>
>> (Added to Cc.)
>>
>>
>> Vegard
>>
>
>
>
> --
> Greetings Michael.
>
On Thursday 12 June 2008 07:18:32 FUJITA Tomonori wrote:
> > Yeah ok. That's an unlikely error path.
>
> Yeah, it doesn't always happen, but it possible that it happens?
Yes. I will create a new patch and send it to John Linville.
So it will also quickly end up in the -mm tree, too.
This will fix both bugs.
> No, seems that there are some confusion. This is just in -mm to find
> problems:
>
> http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error.patch
>
> This patch is a trivial but changes lots of places. So it's difficult
> to get an ACK on all the places.
Thanks a lot for explaining this. This makes things a lot easier.
> This patch need several fixes but all the patches are trivial except
> for b34. I guess that it is because b34 handles devices for
It's called b43 ;)
> dma-mapping in an uncommon way.
Yeah, the hardware is pretty stupid, so we have lots of special workarounds
and so on... So I hardly touch the DMA code and was very surprised about
this bugreport. :)
--
Greetings Michael.
On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
> BUG: unable to handle kernel NULL pointer dereference at 00000000
> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
It seems to crash at
60 extern const struct dma_mapping_ops *dma_ops;
61
62 static inline int dma_mapping_error(dma_addr_t dma_addr)
63 {
64 if (dma_ops->mapping_error)
65 return dma_ops->mapping_error(dma_addr);
66
67 return (dma_addr == bad_dma_address);
68 }
because dma_ops is a NULL pointer here.
Can you add a WARN_ON(!dma_ops); at the beginning of the function
inside of include/asm/x86/dma-mapping.h to confirm this?
--
Greetings Michael.
On Wed, 11 Jun 2008 01:57:30 -0400
"Miles Lane" <[email protected]> wrote:
> > The line that fails is
> >
> > if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
> >
> > The value at 0x58(%eax) is zero, which corresponds to the "struct b43_wldev
> > *dev" line in struct b43_dmaring. In other words, ring->dev is NULL, which
> > causes the error. I'll leave it to FUJITA Tomonori to figure out why.
>
> Thanks all,
>
> I might have time in the morning to test one more patch, otherwise I
> will be back in about three weeks.
I think that Michael's patch should fix this bug, which is already in mmotm:
http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error-b34-fix.patch
Miles, are you sure that you use a kernel including the patch?
On Wednesday 11 June 2008 00:09:27 Miles Lane wrote:
> I got a slightly different BUG with this patch applied:
>
> BUG: unable to handle kernel NULL pointer dereference at 00000000
> IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
So can you please debug this? This is trivial. Just add a few printks
to see which pointer is NULL.
As I said I don't have this tree and really like to avoid fetching
and building yet another tree.
--
Greetings Michael.
Miles Lane wrote:
> On Tue, Jun 10, 2008 at 7:15 PM, Larry Finger <[email protected]> wrote:
>> Miles Lane wrote:
>>> I got a slightly different BUG with this patch applied:
>>>
>>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>>> IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
>>> *pde = 00000000
>>> Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
>>> last sysfs file:
>>>
>>> /sys/devices/pci0000:00/0000:00:08.0/0000:01:06.0/ssb0:0/firmware/ssb0:0/loading
>>> Modules linked in: sbs sbshc wmi battery iptable_filter ip_tables
>>> x_tables ac sbp2 rtc arc4 ecb crypto_blkcipher cryptomgr crypto_algapi
>>> b43 mac80211 cfg80211 led_class snd_intel8x0 snd_ac97_codec ac97_bus
>>> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss
>>> snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore
>>> snd_page_alloc i2c_nforce2 i2c_core button ohci1394 3c59x ieee1394
>>> forcedeth ehci_hcd ohci_hcd usbcore thermal processor fan thermal_sys
>> Miles,
>>
>> If you have time, please cd to the kernel root directory and run the command
>> 'objdump -d -l drivers/net/wireless/b43/dma.o > dmadump'. You may have to
>> install the objdump package. In the file dmadump, find the line that
>> contains b43_dma_mapping_error. On my system it is 0000000000000085
>> <b43_dma_mapping_error>: Note, I use x86_64 and yours will likely be
>> different.
>>
>> Note the address (0x85 in my case), add the offset (0x16) and find the line
>> with the error. You can use KCalc in hexadecimal mode if you are not
>> comfortable with doing addition in base 16. Please report the source line
>> and instruction that failed.
>
> For me, the line is:
> "000000ab <b43_dma_mapping_error>:"
> so, 0xab + 0x16 = 0xc1
> and here's the dump giving some context around that line:
> b43_dma_mapping_error():
> ab: 55 push %ebp
> ac: 89 e5 mov %esp,%ebp
> ae: 57 push %edi
> af: 89 d7 mov %edx,%edi
> b1: 56 push %esi
> b2: 89 ce mov %ecx,%esi
> b4: 53 push %ebx
> b5: 83 ec 08 sub $0x8,%esp
> b8: 8a 55 08 mov 0x8(%ebp),%dl
> bb: 88 55 ef mov %dl,-0x11(%ebp)
> be: 8b 50 58 mov 0x58(%eax),%edx
> c1: 8b 12 mov (%edx),%edx
> c3: 8b 52 08 mov 0x8(%edx),%edx
> c6: 89 55 f0 mov %edx,-0x10(%ebp)
> c9: 8b 40 34 mov 0x34(%eax),%eax
> cc: 83 f8 1e cmp $0x1e,%eax
> cf: 74 07 je d8 <b43_dma_mapping_error+0x2d>
> d1: 83 f8 20 cmp $0x20,%eax
> d4: 75 5b jne 131 <b43_dma_mapping_error+0x86>
> d6: eb 15 jmp ed <b43_dma_mapping_error+0x42>
The line that fails is
if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
The value at 0x58(%eax) is zero, which corresponds to the "struct
b43_wldev *dev" line in struct b43_dmaring. In other words, ring->dev
is NULL, which causes the error. I'll leave it to FUJITA Tomonori to
figure out why.
Larry
> The line that fails is
>
> if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>
> The value at 0x58(%eax) is zero, which corresponds to the "struct b43_wldev
> *dev" line in struct b43_dmaring. In other words, ring->dev is NULL, which
> causes the error. I'll leave it to FUJITA Tomonori to figure out why.
Thanks all,
I might have time in the morning to test one more patch, otherwise I
will be back in about three weeks.
Best wishes,
Miles
On Tue, Jun 10, 2008 at 4:37 PM, Michael Buesch <[email protected]> wrote:
> On Tuesday 10 June 2008 16:34:21 Michael Buesch wrote:
>> On Tuesday 10 June 2008 16:29:17 Vegard Nossum wrote:
>> > On Tue, Jun 10, 2008 at 4:23 PM, Michael Buesch <[email protected]> wrote:
>> > > On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
>> > >> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> > >> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
>> > >
>> > >
>> > > It seems to crash at
>> > > 60 extern const struct dma_mapping_ops *dma_ops;
>> > > 61
>> > > 62 static inline int dma_mapping_error(dma_addr_t dma_addr)
>> > > 63 {
>> > > 64 if (dma_ops->mapping_error)
>> > > 65 return dma_ops->mapping_error(dma_addr);
>> > > 66
>> > > 67 return (dma_addr == bad_dma_address);
>> > > 68 }
>> >
>> > No, this is wrong.
>> >
>> > /* Check if a DMA mapping address is invalid. */
>> > static bool b43_dma_mapping_error(struct b43_dmaring *ring,
>> > dma_addr_t addr,
>> > size_t buffersize, bool dma_to_device)
>> > {
>> > if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>> >
>> > It crashes on this line ---^
>>
>> Which calls dma_mapping_error(), correct?
>>
Yes. Sorry, I should have explained. It happened before the call to
dma_mapping_error(), so it has to be during the argument processing.
addr2line -i ftw ;-) (shows inlines)
$ addr2line -e drivers/net/wireless/b43/b43.o -i 24cf9
drivers/net/wireless/b43/dma.c:521
>> But you are right. I see the bug now.
>> ring->dev is assigned after the call.
>> I wonder why it works reliably on all of my machines.
>>
>
> Ehm no wait a second...
> What strange tree are you looking at?
> This is a copy of the code from my local tree.
>
> 516 /* Check if a DMA mapping address is invalid. */
> 517 static bool b43_dma_mapping_error(struct b43_dmaring *ring,
> 518 dma_addr_t addr,
> 519 size_t buffersize, bool dma_to_device)
> 520 {
> 521 if (unlikely(dma_mapping_error(addr)))
> 522 return 1;
>
> This code is perfectly fine.
> This must be some merge error in some upstream tree.
I am looking at v2.6.26-rc5-mm2.
This change comes from
commit 353c409463ecba63c3a41a992d3f5fba935eada9
Author: FUJITA Tomonori <[email protected]>
Date: Fri May 23 19:02:30 2008 +0000
dma-mapping-add-the-device-argument-to-dma_mapping_error
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
architecture does:
This enables us to cleanly fix the Calgary IOMMU issue that some devices
are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).
I think that per-device dma_mapping_ops support would be also helpful for
KVM people to support PCI passthrough but Andi thinks that this makes it
difficult to support the PCI passthrough (see the above thread). So I
CC'ed this to KVM camp. Comments are appreciated.
A pointer to dma_mapping_ops to struct dev_archdata is added. If the
pointer is non NULL, DMA operations in asm/dma-mapping.h use it. If it's
NULL, the system-wide dma_ops pointer is used as before.
If it's useful for KVM people, I plan to implement a mechanism to register
a hook called when a new pci (or dma capable) device is created (it works
with hot plugging). It enables IOMMUs to set up an appropriate
dma_mapping_ops per device.
The major obstacle is that dma_mapping_error doesn't take a pointer to the
device unlike other DMA operations. So x86 can't have dma_mapping_ops per
device. Note all the POWER IOMMUs use the same dma_mapping_error function
so this is not a problem for POWER but x86 IOMMUs use different
dma_mapping_error functions.
The first patch adds the device argument to dma_mapping_error. The patch
is trivial but large since it touches lots of drivers and dma-mapping.h in
all the architecture.
(Added to Cc.)
Vegard
--
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
-- E. W. Dijkstra, EWD1036
On Tue, Jun 10, 2008 at 7:15 PM, Larry Finger <[email protected]> wrote:
> Miles Lane wrote:
>>
>> I got a slightly different BUG with this patch applied:
>>
>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
>> *pde = 00000000
>> Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
>> last sysfs file:
>>
>> /sys/devices/pci0000:00/0000:00:08.0/0000:01:06.0/ssb0:0/firmware/ssb0:0/loading
>> Modules linked in: sbs sbshc wmi battery iptable_filter ip_tables
>> x_tables ac sbp2 rtc arc4 ecb crypto_blkcipher cryptomgr crypto_algapi
>> b43 mac80211 cfg80211 led_class snd_intel8x0 snd_ac97_codec ac97_bus
>> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss
>> snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore
>> snd_page_alloc i2c_nforce2 i2c_core button ohci1394 3c59x ieee1394
>> forcedeth ehci_hcd ohci_hcd usbcore thermal processor fan thermal_sys
>
> Miles,
>
> If you have time, please cd to the kernel root directory and run the command
> 'objdump -d -l drivers/net/wireless/b43/dma.o > dmadump'. You may have to
> install the objdump package. In the file dmadump, find the line that
> contains b43_dma_mapping_error. On my system it is 0000000000000085
> <b43_dma_mapping_error>: Note, I use x86_64 and yours will likely be
> different.
>
> Note the address (0x85 in my case), add the offset (0x16) and find the line
> with the error. You can use KCalc in hexadecimal mode if you are not
> comfortable with doing addition in base 16. Please report the source line
> and instruction that failed.
For me, the line is:
"000000ab <b43_dma_mapping_error>:"
so, 0xab + 0x16 = 0xc1
and here's the dump giving some context around that line:
b43_dma_mapping_error():
ab: 55 push %ebp
ac: 89 e5 mov %esp,%ebp
ae: 57 push %edi
af: 89 d7 mov %edx,%edi
b1: 56 push %esi
b2: 89 ce mov %ecx,%esi
b4: 53 push %ebx
b5: 83 ec 08 sub $0x8,%esp
b8: 8a 55 08 mov 0x8(%ebp),%dl
bb: 88 55 ef mov %dl,-0x11(%ebp)
be: 8b 50 58 mov 0x58(%eax),%edx
c1: 8b 12 mov (%edx),%edx
c3: 8b 52 08 mov 0x8(%edx),%edx
c6: 89 55 f0 mov %edx,-0x10(%ebp)
c9: 8b 40 34 mov 0x34(%eax),%eax
cc: 83 f8 1e cmp $0x1e,%eax
cf: 74 07 je d8 <b43_dma_mapping_error+0x2d>
d1: 83 f8 20 cmp $0x20,%eax
d4: 75 5b jne 131 <b43_dma_mapping_error+0x86>
d6: eb 15 jmp ed <b43_dma_mapping_error+0x42>
I hope this helps.
Miles
Michael Buesch wrote:
> On Wednesday 11 June 2008 02:58:44 FUJITA Tomonori wrote:
>> On Tue, 10 Jun 2008 16:50:26 +0200
>> Michael Buesch <[email protected]> wrote:
>>
>>> On Tuesday 10 June 2008 16:42:41 Vegard Nossum wrote:
>>>> This change comes from
>>>>
>>>> commit 353c409463ecba63c3a41a992d3f5fba935eada9
>>>> Author: FUJITA Tomonori <[email protected]>
>>>> Date: Fri May 23 19:02:30 2008 +0000
>>>
>>> Ok, FUJITA Tomonori, please make sure a patch like the following goes
>>> into the same trees that you submitted commit 353c409 to.
>>> Also make sure to check b43legacy. I _guess_ you might have added
>>> the same bug there.
>> Ah, sorry about the bug.
>>
>> From a quick look, mainline needs the same fix too?
>>
>> b43_dma_mapping_error calls unmap_descbuffer() on the failure, which
>> assumes that ring->dev is set up properly.
>
> Yeah ok. That's an unlikely error path.
> The new bug is in the main path which will always trigger.
>
> Next time please send _any_ patch for review to me and to the wireless list.
> Please tell me which trees this bug has been merged to. Is it already in
> Linus' tree?
The equivalent line in Linus's tree is "if
(unlikely(dma_mapping_error(addr)))", thus the error has not reached
mainline (yet?).
Larry
On Tuesday 10 June 2008 16:34:21 Michael Buesch wrote:
> On Tuesday 10 June 2008 16:29:17 Vegard Nossum wrote:
> > On Tue, Jun 10, 2008 at 4:23 PM, Michael Buesch <[email protected]> wrote:
> > > On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
> > >> BUG: unable to handle kernel NULL pointer dereference at 00000000
> > >> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
> > >
> > >
> > > It seems to crash at
> > > 60 extern const struct dma_mapping_ops *dma_ops;
> > > 61
> > > 62 static inline int dma_mapping_error(dma_addr_t dma_addr)
> > > 63 {
> > > 64 if (dma_ops->mapping_error)
> > > 65 return dma_ops->mapping_error(dma_addr);
> > > 66
> > > 67 return (dma_addr == bad_dma_address);
> > > 68 }
> >
> > No, this is wrong.
> >
> > /* Check if a DMA mapping address is invalid. */
> > static bool b43_dma_mapping_error(struct b43_dmaring *ring,
> > dma_addr_t addr,
> > size_t buffersize, bool dma_to_device)
> > {
> > if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
> >
> > It crashes on this line ---^
>
> Which calls dma_mapping_error(), correct?
>
> But you are right. I see the bug now.
> ring->dev is assigned after the call.
> I wonder why it works reliably on all of my machines.
>
Ehm no wait a second...
What strange tree are you looking at?
This is a copy of the code from my local tree.
516 /* Check if a DMA mapping address is invalid. */
517 static bool b43_dma_mapping_error(struct b43_dmaring *ring,
518 dma_addr_t addr,
519 size_t buffersize, bool dma_to_device)
520 {
521 if (unlikely(dma_mapping_error(addr)))
522 return 1;
This code is perfectly fine.
This must be some merge error in some upstream tree.
--
Greetings Michael.
I am not a programmer.
Here is the content of the file. Would you please send back a version
of the file with the necessary changes added?
BTW, I leave tomorrow for a three week vacation, so I hope we can sort
this before I go.
Thanks,
Miles
-----------------------------
/*
Broadcom B43 wireless driver
DMA ringbuffer and descriptor allocation/management
Copyright (c) 2005, 2006 Michael Buesch <[email protected]>
Some code in this file is derived from the b44.c driver
Copyright (C) 2002 David S. Miller
Copyright (C) Pekka Pietikainen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "b43.h"
#include "dma.h"
#include "main.h"
#include "debugfs.h"
#include "xmit.h"
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/etherdevice.h>
#include <asm/div64.h>
/* 32bit DMA ops. */
static
struct b43_dmadesc_generic *op32_idx2desc(struct b43_dmaring *ring,
int slot,
struct b43_dmadesc_meta **meta)
{
struct b43_dmadesc32 *desc;
*meta = &(ring->meta[slot]);
desc = ring->descbase;
desc = &(desc[slot]);
return (struct b43_dmadesc_generic *)desc;
}
static void op32_fill_descriptor(struct b43_dmaring *ring,
struct b43_dmadesc_generic *desc,
dma_addr_t dmaaddr, u16 bufsize,
int start, int end, int irq)
{
struct b43_dmadesc32 *descbase = ring->descbase;
int slot;
u32 ctl;
u32 addr;
u32 addrext;
slot = (int)(&(desc->dma32) - descbase);
B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
addr = (u32) (dmaaddr & ~SSB_DMA_TRANSLATION_MASK);
addrext = (u32) (dmaaddr & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
addr |= ssb_dma_translation(ring->dev->dev);
ctl = (bufsize - ring->frameoffset)
& B43_DMA32_DCTL_BYTECNT;
if (slot == ring->nr_slots - 1)
ctl |= B43_DMA32_DCTL_DTABLEEND;
if (start)
ctl |= B43_DMA32_DCTL_FRAMESTART;
if (end)
ctl |= B43_DMA32_DCTL_FRAMEEND;
if (irq)
ctl |= B43_DMA32_DCTL_IRQ;
ctl |= (addrext << B43_DMA32_DCTL_ADDREXT_SHIFT)
& B43_DMA32_DCTL_ADDREXT_MASK;
desc->dma32.control = cpu_to_le32(ctl);
desc->dma32.address = cpu_to_le32(addr);
}
static void op32_poke_tx(struct b43_dmaring *ring, int slot)
{
b43_dma_write(ring, B43_DMA32_TXINDEX,
(u32) (slot * sizeof(struct b43_dmadesc32)));
}
static void op32_tx_suspend(struct b43_dmaring *ring)
{
b43_dma_write(ring, B43_DMA32_TXCTL, b43_dma_read(ring, B43_DMA32_TXCTL)
| B43_DMA32_TXSUSPEND);
}
static void op32_tx_resume(struct b43_dmaring *ring)
{
b43_dma_write(ring, B43_DMA32_TXCTL, b43_dma_read(ring, B43_DMA32_TXCTL)
& ~B43_DMA32_TXSUSPEND);
}
static int op32_get_current_rxslot(struct b43_dmaring *ring)
{
u32 val;
val = b43_dma_read(ring, B43_DMA32_RXSTATUS);
val &= B43_DMA32_RXDPTR;
return (val / sizeof(struct b43_dmadesc32));
}
static void op32_set_current_rxslot(struct b43_dmaring *ring, int slot)
{
b43_dma_write(ring, B43_DMA32_RXINDEX,
(u32) (slot * sizeof(struct b43_dmadesc32)));
}
static const struct b43_dma_ops dma32_ops = {
.idx2desc = op32_idx2desc,
.fill_descriptor = op32_fill_descriptor,
.poke_tx = op32_poke_tx,
.tx_suspend = op32_tx_suspend,
.tx_resume = op32_tx_resume,
.get_current_rxslot = op32_get_current_rxslot,
.set_current_rxslot = op32_set_current_rxslot,
};
/* 64bit DMA ops. */
static
struct b43_dmadesc_generic *op64_idx2desc(struct b43_dmaring *ring,
int slot,
struct b43_dmadesc_meta **meta)
{
struct b43_dmadesc64 *desc;
*meta = &(ring->meta[slot]);
desc = ring->descbase;
desc = &(desc[slot]);
return (struct b43_dmadesc_generic *)desc;
}
static void op64_fill_descriptor(struct b43_dmaring *ring,
struct b43_dmadesc_generic *desc,
dma_addr_t dmaaddr, u16 bufsize,
int start, int end, int irq)
{
struct b43_dmadesc64 *descbase = ring->descbase;
int slot;
u32 ctl0 = 0, ctl1 = 0;
u32 addrlo, addrhi;
u32 addrext;
slot = (int)(&(desc->dma64) - descbase);
B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
addrlo = (u32) (dmaaddr & 0xFFFFFFFF);
addrhi = (((u64) dmaaddr >> 32) & ~SSB_DMA_TRANSLATION_MASK);
addrext = (((u64) dmaaddr >> 32) & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
addrhi |= (ssb_dma_translation(ring->dev->dev) << 1);
if (slot == ring->nr_slots - 1)
ctl0 |= B43_DMA64_DCTL0_DTABLEEND;
if (start)
ctl0 |= B43_DMA64_DCTL0_FRAMESTART;
if (end)
ctl0 |= B43_DMA64_DCTL0_FRAMEEND;
if (irq)
ctl0 |= B43_DMA64_DCTL0_IRQ;
ctl1 |= (bufsize - ring->frameoffset)
& B43_DMA64_DCTL1_BYTECNT;
ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT)
& B43_DMA64_DCTL1_ADDREXT_MASK;
desc->dma64.control0 = cpu_to_le32(ctl0);
desc->dma64.control1 = cpu_to_le32(ctl1);
desc->dma64.address_low = cpu_to_le32(addrlo);
desc->dma64.address_high = cpu_to_le32(addrhi);
}
static void op64_poke_tx(struct b43_dmaring *ring, int slot)
{
b43_dma_write(ring, B43_DMA64_TXINDEX,
(u32) (slot * sizeof(struct b43_dmadesc64)));
}
static void op64_tx_suspend(struct b43_dmaring *ring)
{
b43_dma_write(ring, B43_DMA64_TXCTL, b43_dma_read(ring, B43_DMA64_TXCTL)
| B43_DMA64_TXSUSPEND);
}
static void op64_tx_resume(struct b43_dmaring *ring)
{
b43_dma_write(ring, B43_DMA64_TXCTL, b43_dma_read(ring, B43_DMA64_TXCTL)
& ~B43_DMA64_TXSUSPEND);
}
static int op64_get_current_rxslot(struct b43_dmaring *ring)
{
u32 val;
val = b43_dma_read(ring, B43_DMA64_RXSTATUS);
val &= B43_DMA64_RXSTATDPTR;
return (val / sizeof(struct b43_dmadesc64));
}
static void op64_set_current_rxslot(struct b43_dmaring *ring, int slot)
{
b43_dma_write(ring, B43_DMA64_RXINDEX,
(u32) (slot * sizeof(struct b43_dmadesc64)));
}
static const struct b43_dma_ops dma64_ops = {
.idx2desc = op64_idx2desc,
.fill_descriptor = op64_fill_descriptor,
.poke_tx = op64_poke_tx,
.tx_suspend = op64_tx_suspend,
.tx_resume = op64_tx_resume,
.get_current_rxslot = op64_get_current_rxslot,
.set_current_rxslot = op64_set_current_rxslot,
};
static inline int free_slots(struct b43_dmaring *ring)
{
return (ring->nr_slots - ring->used_slots);
}
static inline int next_slot(struct b43_dmaring *ring, int slot)
{
B43_WARN_ON(!(slot >= -1 && slot <= ring->nr_slots - 1));
if (slot == ring->nr_slots - 1)
return 0;
return slot + 1;
}
static inline int prev_slot(struct b43_dmaring *ring, int slot)
{
B43_WARN_ON(!(slot >= 0 && slot <= ring->nr_slots - 1));
if (slot == 0)
return ring->nr_slots - 1;
return slot - 1;
}
#ifdef CONFIG_B43_DEBUG
static void update_max_used_slots(struct b43_dmaring *ring,
int current_used_slots)
{
if (current_used_slots <= ring->max_used_slots)
return;
ring->max_used_slots = current_used_slots;
if (b43_debug(ring->dev, B43_DBG_DMAVERBOSE)) {
b43dbg(ring->dev->wl,
"max_used_slots increased to %d on %s ring %d\n",
ring->max_used_slots,
ring->tx ? "TX" : "RX", ring->index);
}
}
#else
static inline
void update_max_used_slots(struct b43_dmaring *ring, int current_used_slots)
{
}
#endif /* DEBUG */
/* Request a slot for usage. */
static inline int request_slot(struct b43_dmaring *ring)
{
int slot;
B43_WARN_ON(!ring->tx);
B43_WARN_ON(ring->stopped);
B43_WARN_ON(free_slots(ring) == 0);
slot = next_slot(ring, ring->current_slot);
ring->current_slot = slot;
ring->used_slots++;
update_max_used_slots(ring, ring->used_slots);
return slot;
}
static u16 b43_dmacontroller_base(enum b43_dmatype type, int controller_idx)
{
static const u16 map64[] = {
B43_MMIO_DMA64_BASE0,
B43_MMIO_DMA64_BASE1,
B43_MMIO_DMA64_BASE2,
B43_MMIO_DMA64_BASE3,
B43_MMIO_DMA64_BASE4,
B43_MMIO_DMA64_BASE5,
};
static const u16 map32[] = {
B43_MMIO_DMA32_BASE0,
B43_MMIO_DMA32_BASE1,
B43_MMIO_DMA32_BASE2,
B43_MMIO_DMA32_BASE3,
B43_MMIO_DMA32_BASE4,
B43_MMIO_DMA32_BASE5,
};
if (type == B43_DMA_64BIT) {
B43_WARN_ON(!(controller_idx >= 0 &&
controller_idx < ARRAY_SIZE(map64)));
return map64[controller_idx];
}
B43_WARN_ON(!(controller_idx >= 0 &&
controller_idx < ARRAY_SIZE(map32)));
return map32[controller_idx];
}
static inline
dma_addr_t map_descbuffer(struct b43_dmaring *ring,
unsigned char *buf, size_t len, int tx)
{
dma_addr_t dmaaddr;
if (tx) {
dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_TO_DEVICE);
} else {
dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
buf, len, DMA_FROM_DEVICE);
}
return dmaaddr;
}
static inline
void unmap_descbuffer(struct b43_dmaring *ring,
dma_addr_t addr, size_t len, int tx)
{
if (tx) {
dma_unmap_single(ring->dev->dev->dma_dev,
addr, len, DMA_TO_DEVICE);
} else {
dma_unmap_single(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
}
static inline
void sync_descbuffer_for_cpu(struct b43_dmaring *ring,
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
static inline
void sync_descbuffer_for_device(struct b43_dmaring *ring,
dma_addr_t addr, size_t len)
{
B43_WARN_ON(ring->tx);
dma_sync_single_for_device(ring->dev->dev->dma_dev,
addr, len, DMA_FROM_DEVICE);
}
static inline
void free_descriptor_buffer(struct b43_dmaring *ring,
struct b43_dmadesc_meta *meta)
{
if (meta->skb) {
dev_kfree_skb_any(meta->skb);
meta->skb = NULL;
}
}
static int alloc_ringmemory(struct b43_dmaring *ring)
{
struct device *dma_dev = ring->dev->dev->dma_dev;
gfp_t flags = GFP_KERNEL;
/* The specs call for 4K buffers for 30- and 32-bit DMA with 4K
* alignment and 8K buffers for 64-bit DMA with 8K alignment. Testing
* has shown that 4K is sufficient for the latter as long as the buffer
* does not cross an 8K boundary.
*
* For unknown reasons - possibly a hardware error - the BCM4311 rev
* 02, which uses 64-bit DMA, needs the ring buffer in very low memory,
* which accounts for the GFP_DMA flag below.
*/
if (ring->type == B43_DMA_64BIT)
flags |= GFP_DMA;
ring->descbase = dma_alloc_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
&(ring->dmabase), flags);
if (!ring->descbase) {
b43err(ring->dev->wl, "DMA ringmemory allocation failed\n");
return -ENOMEM;
}
memset(ring->descbase, 0, B43_DMA_RINGMEMSIZE);
return 0;
}
static void free_ringmemory(struct b43_dmaring *ring)
{
struct device *dma_dev = ring->dev->dev->dma_dev;
dma_free_coherent(dma_dev, B43_DMA_RINGMEMSIZE,
ring->descbase, ring->dmabase);
}
/* Reset the RX DMA channel */
static int b43_dmacontroller_rx_reset(struct b43_wldev *dev, u16 mmio_base,
enum b43_dmatype type)
{
int i;
u32 value;
u16 offset;
might_sleep();
offset = (type == B43_DMA_64BIT) ? B43_DMA64_RXCTL : B43_DMA32_RXCTL;
b43_write32(dev, mmio_base + offset, 0);
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_RXSTATUS :
B43_DMA32_RXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_RXSTAT;
if (value == B43_DMA64_RXSTAT_DISABLED) {
i = -1;
break;
}
} else {
value &= B43_DMA32_RXSTATE;
if (value == B43_DMA32_RXSTAT_DISABLED) {
i = -1;
break;
}
}
msleep(1);
}
if (i != -1) {
b43err(dev->wl, "DMA RX reset timed out\n");
return -ENODEV;
}
return 0;
}
/* Reset the TX DMA channel */
static int b43_dmacontroller_tx_reset(struct b43_wldev *dev, u16 mmio_base,
enum b43_dmatype type)
{
int i;
u32 value;
u16 offset;
might_sleep();
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXSTATUS :
B43_DMA32_TXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_TXSTAT;
if (value == B43_DMA64_TXSTAT_DISABLED ||
value == B43_DMA64_TXSTAT_IDLEWAIT ||
value == B43_DMA64_TXSTAT_STOPPED)
break;
} else {
value &= B43_DMA32_TXSTATE;
if (value == B43_DMA32_TXSTAT_DISABLED ||
value == B43_DMA32_TXSTAT_IDLEWAIT ||
value == B43_DMA32_TXSTAT_STOPPED)
break;
}
msleep(1);
}
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXCTL : B43_DMA32_TXCTL;
b43_write32(dev, mmio_base + offset, 0);
for (i = 0; i < 10; i++) {
offset = (type == B43_DMA_64BIT) ? B43_DMA64_TXSTATUS :
B43_DMA32_TXSTATUS;
value = b43_read32(dev, mmio_base + offset);
if (type == B43_DMA_64BIT) {
value &= B43_DMA64_TXSTAT;
if (value == B43_DMA64_TXSTAT_DISABLED) {
i = -1;
break;
}
} else {
value &= B43_DMA32_TXSTATE;
if (value == B43_DMA32_TXSTAT_DISABLED) {
i = -1;
break;
}
}
msleep(1);
}
if (i != -1) {
b43err(dev->wl, "DMA TX reset timed out\n");
return -ENODEV;
}
/* ensure the reset is completed. */
msleep(1);
return 0;
}
/* Check if a DMA mapping address is invalid. */
static bool b43_dma_mapping_error(struct b43_dmaring *ring,
dma_addr_t addr,
size_t buffersize, bool dma_to_device)
{
if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
return 1;
switch (ring->type) {
case B43_DMA_30BIT:
if ((u64)addr + buffersize > (1ULL << 30))
goto address_error;
break;
case B43_DMA_32BIT:
if ((u64)addr + buffersize > (1ULL << 32))
goto address_error;
break;
case B43_DMA_64BIT:
/* Currently we can't have addresses beyond
* 64bit in the kernel. */
break;
}
/* The address is OK. */
return 0;
address_error:
/* We can't support this address. Unmap it again. */
unmap_descbuffer(ring, addr, buffersize, dma_to_device);
return 1;
}
static int setup_rx_descbuffer(struct b43_dmaring *ring,
struct b43_dmadesc_generic *desc,
struct b43_dmadesc_meta *meta, gfp_t gfp_flags)
{
struct b43_rxhdr_fw4 *rxhdr;
dma_addr_t dmaaddr;
struct sk_buff *skb;
B43_WARN_ON(ring->tx);
skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
if (unlikely(!skb))
return -ENOMEM;
dmaaddr = map_descbuffer(ring, skb->data, ring->rx_buffersize, 0);
if (b43_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) {
/* ugh. try to realloc in zone_dma */
gfp_flags |= GFP_DMA;
dev_kfree_skb_any(skb);
skb = __dev_alloc_skb(ring->rx_buffersize, gfp_flags);
if (unlikely(!skb))
return -ENOMEM;
dmaaddr = map_descbuffer(ring, skb->data,
ring->rx_buffersize, 0);
}
if (b43_dma_mapping_error(ring, dmaaddr, ring->rx_buffersize, 0)) {
b43err(ring->dev->wl, "RX DMA buffer allocation failed\n");
dev_kfree_skb_any(skb);
return -EIO;
}
meta->skb = skb;
meta->dmaaddr = dmaaddr;
ring->ops->fill_descriptor(ring, desc, dmaaddr,
ring->rx_buffersize, 0, 0, 0);
rxhdr = (struct b43_rxhdr_fw4 *)(skb->data);
rxhdr->frame_len = 0;
return 0;
}
/* Allocate the initial descbuffers.
* This is used for an RX ring only.
*/
static int alloc_initial_descbuffers(struct b43_dmaring *ring)
{
int i, err = -ENOMEM;
struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
for (i = 0; i < ring->nr_slots; i++) {
desc = ring->ops->idx2desc(ring, i, &meta);
err = setup_rx_descbuffer(ring, desc, meta, GFP_KERNEL);
if (err) {
b43err(ring->dev->wl,
"Failed to allocate initial descbuffers\n");
goto err_unwind;
}
}
mb();
ring->used_slots = ring->nr_slots;
err = 0;
out:
return err;
err_unwind:
for (i--; i >= 0; i--) {
desc = ring->ops->idx2desc(ring, i, &meta);
unmap_descbuffer(ring, meta->dmaaddr, ring->rx_buffersize, 0);
dev_kfree_skb(meta->skb);
}
goto out;
}
/* Do initial setup of the DMA controller.
* Reset the controller, write the ring busaddress
* and switch the "enable" bit on.
*/
static int dmacontroller_setup(struct b43_dmaring *ring)
{
int err = 0;
u32 value;
u32 addrext;
u32 trans = ssb_dma_translation(ring->dev->dev);
if (ring->tx) {
if (ring->type == B43_DMA_64BIT) {
u64 ringbase = (u64) (ring->dmabase);
addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
value = B43_DMA64_TXENABLE;
value |= (addrext << B43_DMA64_TXADDREXT_SHIFT)
& B43_DMA64_TXADDREXT_MASK;
b43_dma_write(ring, B43_DMA64_TXCTL, value);
b43_dma_write(ring, B43_DMA64_TXRINGLO,
(ringbase & 0xFFFFFFFF));
b43_dma_write(ring, B43_DMA64_TXRINGHI,
((ringbase >> 32) &
~SSB_DMA_TRANSLATION_MASK)
| (trans << 1));
} else {
u32 ringbase = (u32) (ring->dmabase);
addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
value = B43_DMA32_TXENABLE;
value |= (addrext << B43_DMA32_TXADDREXT_SHIFT)
& B43_DMA32_TXADDREXT_MASK;
b43_dma_write(ring, B43_DMA32_TXCTL, value);
b43_dma_write(ring, B43_DMA32_TXRING,
(ringbase & ~SSB_DMA_TRANSLATION_MASK)
| trans);
}
} else {
err = alloc_initial_descbuffers(ring);
if (err)
goto out;
if (ring->type == B43_DMA_64BIT) {
u64 ringbase = (u64) (ring->dmabase);
addrext = ((ringbase >> 32) & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
value = (ring->frameoffset << B43_DMA64_RXFROFF_SHIFT);
value |= B43_DMA64_RXENABLE;
value |= (addrext << B43_DMA64_RXADDREXT_SHIFT)
& B43_DMA64_RXADDREXT_MASK;
b43_dma_write(ring, B43_DMA64_RXCTL, value);
b43_dma_write(ring, B43_DMA64_RXRINGLO,
(ringbase & 0xFFFFFFFF));
b43_dma_write(ring, B43_DMA64_RXRINGHI,
((ringbase >> 32) &
~SSB_DMA_TRANSLATION_MASK)
| (trans << 1));
b43_dma_write(ring, B43_DMA64_RXINDEX, ring->nr_slots *
sizeof(struct b43_dmadesc64));
} else {
u32 ringbase = (u32) (ring->dmabase);
addrext = (ringbase & SSB_DMA_TRANSLATION_MASK)
>> SSB_DMA_TRANSLATION_SHIFT;
value = (ring->frameoffset << B43_DMA32_RXFROFF_SHIFT);
value |= B43_DMA32_RXENABLE;
value |= (addrext << B43_DMA32_RXADDREXT_SHIFT)
& B43_DMA32_RXADDREXT_MASK;
b43_dma_write(ring, B43_DMA32_RXCTL, value);
b43_dma_write(ring, B43_DMA32_RXRING,
(ringbase & ~SSB_DMA_TRANSLATION_MASK)
| trans);
b43_dma_write(ring, B43_DMA32_RXINDEX, ring->nr_slots *
sizeof(struct b43_dmadesc32));
}
}
out:
return err;
}
/* Shutdown the DMA controller. */
static void dmacontroller_cleanup(struct b43_dmaring *ring)
{
if (ring->tx) {
b43_dmacontroller_tx_reset(ring->dev, ring->mmio_base,
ring->type);
if (ring->type == B43_DMA_64BIT) {
b43_dma_write(ring, B43_DMA64_TXRINGLO, 0);
b43_dma_write(ring, B43_DMA64_TXRINGHI, 0);
} else
b43_dma_write(ring, B43_DMA32_TXRING, 0);
} else {
b43_dmacontroller_rx_reset(ring->dev, ring->mmio_base,
ring->type);
if (ring->type == B43_DMA_64BIT) {
b43_dma_write(ring, B43_DMA64_RXRINGLO, 0);
b43_dma_write(ring, B43_DMA64_RXRINGHI, 0);
} else
b43_dma_write(ring, B43_DMA32_RXRING, 0);
}
}
static void free_all_descbuffers(struct b43_dmaring *ring)
{
struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
int i;
if (!ring->used_slots)
return;
for (i = 0; i < ring->nr_slots; i++) {
desc = ring->ops->idx2desc(ring, i, &meta);
if (!meta->skb) {
B43_WARN_ON(!ring->tx);
continue;
}
if (ring->tx) {
unmap_descbuffer(ring, meta->dmaaddr,
meta->skb->len, 1);
} else {
unmap_descbuffer(ring, meta->dmaaddr,
ring->rx_buffersize, 0);
}
free_descriptor_buffer(ring, meta);
}
}
static u64 supported_dma_mask(struct b43_wldev *dev)
{
u32 tmp;
u16 mmio_base;
tmp = b43_read32(dev, SSB_TMSHIGH);
if (tmp & SSB_TMSHIGH_DMA64)
return DMA_64BIT_MASK;
mmio_base = b43_dmacontroller_base(0, 0);
b43_write32(dev, mmio_base + B43_DMA32_TXCTL, B43_DMA32_TXADDREXT_MASK);
tmp = b43_read32(dev, mmio_base + B43_DMA32_TXCTL);
if (tmp & B43_DMA32_TXADDREXT_MASK)
return DMA_32BIT_MASK;
return DMA_30BIT_MASK;
}
static enum b43_dmatype dma_mask_to_engine_type(u64 dmamask)
{
if (dmamask == DMA_30BIT_MASK)
return B43_DMA_30BIT;
if (dmamask == DMA_32BIT_MASK)
return B43_DMA_32BIT;
if (dmamask == DMA_64BIT_MASK)
return B43_DMA_64BIT;
B43_WARN_ON(1);
return B43_DMA_30BIT;
}
/* Main initialization function. */
static
struct b43_dmaring *b43_setup_dmaring(struct b43_wldev *dev,
int controller_index,
int for_tx,
enum b43_dmatype type)
{
struct b43_dmaring *ring;
int err;
int nr_slots;
dma_addr_t dma_test;
ring = kzalloc(sizeof(*ring), GFP_KERNEL);
if (!ring)
goto out;
ring->type = type;
nr_slots = B43_RXRING_SLOTS;
if (for_tx)
nr_slots = B43_TXRING_SLOTS;
ring->meta = kcalloc(nr_slots, sizeof(struct b43_dmadesc_meta),
GFP_KERNEL);
if (!ring->meta)
goto err_kfree_ring;
if (for_tx) {
ring->txhdr_cache = kcalloc(nr_slots,
b43_txhdr_size(dev),
GFP_KERNEL);
if (!ring->txhdr_cache)
goto err_kfree_meta;
/* test for ability to dma to txhdr_cache */
dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
if (b43_dma_mapping_error(ring, dma_test,
b43_txhdr_size(dev), 1)) {
/* ugh realloc */
kfree(ring->txhdr_cache);
ring->txhdr_cache = kcalloc(nr_slots,
b43_txhdr_size(dev),
GFP_KERNEL | GFP_DMA);
if (!ring->txhdr_cache)
goto err_kfree_meta;
dma_test = dma_map_single(dev->dev->dma_dev,
ring->txhdr_cache,
b43_txhdr_size(dev),
DMA_TO_DEVICE);
if (b43_dma_mapping_error(ring, dma_test,
b43_txhdr_size(dev), 1)) {
b43err(dev->wl,
"TXHDR DMA allocation failed\n");
goto err_kfree_txhdr_cache;
}
}
dma_unmap_single(dev->dev->dma_dev,
dma_test, b43_txhdr_size(dev),
DMA_TO_DEVICE);
}
ring->dev = dev;
ring->nr_slots = nr_slots;
ring->mmio_base = b43_dmacontroller_base(type, controller_index);
ring->index = controller_index;
if (type == B43_DMA_64BIT)
ring->ops = &dma64_ops;
else
ring->ops = &dma32_ops;
if (for_tx) {
ring->tx = 1;
ring->current_slot = -1;
} else {
if (ring->index == 0) {
ring->rx_buffersize = B43_DMA0_RX_BUFFERSIZE;
ring->frameoffset = B43_DMA0_RX_FRAMEOFFSET;
} else if (ring->index == 3) {
ring->rx_buffersize = B43_DMA3_RX_BUFFERSIZE;
ring->frameoffset = B43_DMA3_RX_FRAMEOFFSET;
} else
B43_WARN_ON(1);
}
spin_lock_init(&ring->lock);
#ifdef CONFIG_B43_DEBUG
ring->last_injected_overflow = jiffies;
#endif
err = alloc_ringmemory(ring);
if (err)
goto err_kfree_txhdr_cache;
err = dmacontroller_setup(ring);
if (err)
goto err_free_ringmemory;
out:
return ring;
err_free_ringmemory:
free_ringmemory(ring);
err_kfree_txhdr_cache:
kfree(ring->txhdr_cache);
err_kfree_meta:
kfree(ring->meta);
err_kfree_ring:
kfree(ring);
ring = NULL;
goto out;
}
#define divide(a, b) ({ \
typeof(a) __a = a; \
do_div(__a, b); \
__a; \
})
#define modulo(a, b) ({ \
typeof(a) __a = a; \
do_div(__a, b); \
})
/* Main cleanup function. */
static void b43_destroy_dmaring(struct b43_dmaring *ring,
const char *ringname)
{
if (!ring)
return;
#ifdef CONFIG_B43_DEBUG
{
/* Print some statistics. */
u64 failed_packets = ring->nr_failed_tx_packets;
u64 succeed_packets = ring->nr_succeed_tx_packets;
u64 nr_packets = failed_packets + succeed_packets;
u64 permille_failed = 0, average_tries = 0;
if (nr_packets)
permille_failed = divide(failed_packets * 1000, nr_packets);
if (nr_packets)
average_tries = divide(ring->nr_total_packet_tries * 100, nr_packets);
b43dbg(ring->dev->wl, "DMA-%u %s: "
"Used slots %d/%d, Failed frames %llu/%llu = %llu.%01llu%%, "
"Average tries %llu.%02llu\n",
(unsigned int)(ring->type), ringname,
ring->max_used_slots,
ring->nr_slots,
(unsigned long long)failed_packets,
(unsigned long long)nr_packets,
(unsigned long long)divide(permille_failed, 10),
(unsigned long long)modulo(permille_failed, 10),
(unsigned long long)divide(average_tries, 100),
(unsigned long long)modulo(average_tries, 100));
}
#endif /* DEBUG */
/* Device IRQs are disabled prior entering this function,
* so no need to take care of concurrency with rx handler stuff.
*/
dmacontroller_cleanup(ring);
free_all_descbuffers(ring);
free_ringmemory(ring);
kfree(ring->txhdr_cache);
kfree(ring->meta);
kfree(ring);
}
#define destroy_ring(dma, ring) do { \
b43_destroy_dmaring((dma)->ring, __stringify(ring)); \
(dma)->ring = NULL; \
} while (0)
void b43_dma_free(struct b43_wldev *dev)
{
struct b43_dma *dma;
if (b43_using_pio_transfers(dev))
return;
dma = &dev->dma;
destroy_ring(dma, rx_ring);
destroy_ring(dma, tx_ring_AC_BK);
destroy_ring(dma, tx_ring_AC_BE);
destroy_ring(dma, tx_ring_AC_VI);
destroy_ring(dma, tx_ring_AC_VO);
destroy_ring(dma, tx_ring_mcast);
}
static int b43_dma_set_mask(struct b43_wldev *dev, u64 mask)
{
u64 orig_mask = mask;
bool fallback = 0;
int err;
/* Try to set the DMA mask. If it fails, try falling back to a
* lower mask, as we can always also support a lower one. */
while (1) {
err = ssb_dma_set_mask(dev->dev, mask);
if (!err)
break;
if (mask == DMA_64BIT_MASK) {
mask = DMA_32BIT_MASK;
fallback = 1;
continue;
}
if (mask == DMA_32BIT_MASK) {
mask = DMA_30BIT_MASK;
fallback = 1;
continue;
}
b43err(dev->wl, "The machine/kernel does not support "
"the required %u-bit DMA mask\n",
(unsigned int)dma_mask_to_engine_type(orig_mask));
return -EOPNOTSUPP;
}
if (fallback) {
b43info(dev->wl, "DMA mask fallback from %u-bit to %u-bit\n",
(unsigned int)dma_mask_to_engine_type(orig_mask),
(unsigned int)dma_mask_to_engine_type(mask));
}
return 0;
}
int b43_dma_init(struct b43_wldev *dev)
{
struct b43_dma *dma = &dev->dma;
int err;
u64 dmamask;
enum b43_dmatype type;
dmamask = supported_dma_mask(dev);
type = dma_mask_to_engine_type(dmamask);
err = b43_dma_set_mask(dev, dmamask);
if (err)
return err;
err = -ENOMEM;
/* setup TX DMA channels. */
dma->tx_ring_AC_BK = b43_setup_dmaring(dev, 0, 1, type);
if (!dma->tx_ring_AC_BK)
goto out;
dma->tx_ring_AC_BE = b43_setup_dmaring(dev, 1, 1, type);
if (!dma->tx_ring_AC_BE)
goto err_destroy_bk;
dma->tx_ring_AC_VI = b43_setup_dmaring(dev, 2, 1, type);
if (!dma->tx_ring_AC_VI)
goto err_destroy_be;
dma->tx_ring_AC_VO = b43_setup_dmaring(dev, 3, 1, type);
if (!dma->tx_ring_AC_VO)
goto err_destroy_vi;
dma->tx_ring_mcast = b43_setup_dmaring(dev, 4, 1, type);
if (!dma->tx_ring_mcast)
goto err_destroy_vo;
/* setup RX DMA channel. */
dma->rx_ring = b43_setup_dmaring(dev, 0, 0, type);
if (!dma->rx_ring)
goto err_destroy_mcast;
/* No support for the TX status DMA ring. */
B43_WARN_ON(dev->dev->id.revision < 5);
b43dbg(dev->wl, "%u-bit DMA initialized\n",
(unsigned int)type);
err = 0;
out:
return err;
err_destroy_mcast:
destroy_ring(dma, tx_ring_mcast);
err_destroy_vo:
destroy_ring(dma, tx_ring_AC_VO);
err_destroy_vi:
destroy_ring(dma, tx_ring_AC_VI);
err_destroy_be:
destroy_ring(dma, tx_ring_AC_BE);
err_destroy_bk:
destroy_ring(dma, tx_ring_AC_BK);
return err;
}
/* Generate a cookie for the TX header. */
static u16 generate_cookie(struct b43_dmaring *ring, int slot)
{
u16 cookie;
/* Use the upper 4 bits of the cookie as
* DMA controller ID and store the slot number
* in the lower 12 bits.
* Note that the cookie must never be 0, as this
* is a special value used in RX path.
* It can also not be 0xFFFF because that is special
* for multicast frames.
*/
cookie = (((u16)ring->index + 1) << 12);
B43_WARN_ON(slot & ~0x0FFF);
cookie |= (u16)slot;
return cookie;
}
/* Inspect a cookie and find out to which controller/slot it belongs. */
static
struct b43_dmaring *parse_cookie(struct b43_wldev *dev, u16 cookie, int *slot)
{
struct b43_dma *dma = &dev->dma;
struct b43_dmaring *ring = NULL;
switch (cookie & 0xF000) {
case 0x1000:
ring = dma->tx_ring_AC_BK;
break;
case 0x2000:
ring = dma->tx_ring_AC_BE;
break;
case 0x3000:
ring = dma->tx_ring_AC_VI;
break;
case 0x4000:
ring = dma->tx_ring_AC_VO;
break;
case 0x5000:
ring = dma->tx_ring_mcast;
break;
default:
B43_WARN_ON(1);
}
*slot = (cookie & 0x0FFF);
B43_WARN_ON(!(ring && *slot >= 0 && *slot < ring->nr_slots));
return ring;
}
static int dma_tx_fragment(struct b43_dmaring *ring,
struct sk_buff *skb)
{
const struct b43_dma_ops *ops = ring->ops;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
u8 *header;
int slot, old_top_slot, old_used_slots;
int err;
struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
struct b43_dmadesc_meta *meta_hdr;
struct sk_buff *bounce_skb;
u16 cookie;
size_t hdrsize = b43_txhdr_size(ring->dev);
#define SLOTS_PER_PACKET 2
old_top_slot = ring->current_slot;
old_used_slots = ring->used_slots;
/* Get a slot for the header. */
slot = request_slot(ring);
desc = ops->idx2desc(ring, slot, &meta_hdr);
memset(meta_hdr, 0, sizeof(*meta_hdr));
header = &(ring->txhdr_cache[slot * hdrsize]);
cookie = generate_cookie(ring, slot);
err = b43_generate_txhdr(ring->dev, header,
skb->data, skb->len, info, cookie);
if (unlikely(err)) {
ring->current_slot = old_top_slot;
ring->used_slots = old_used_slots;
return err;
}
meta_hdr->dmaaddr = map_descbuffer(ring, (unsigned char *)header,
hdrsize, 1);
if (b43_dma_mapping_error(ring, meta_hdr->dmaaddr, hdrsize, 1)) {
ring->current_slot = old_top_slot;
ring->used_slots = old_used_slots;
return -EIO;
}
ops->fill_descriptor(ring, desc, meta_hdr->dmaaddr,
hdrsize, 1, 0, 0);
/* Get a slot for the payload. */
slot = request_slot(ring);
desc = ops->idx2desc(ring, slot, &meta);
memset(meta, 0, sizeof(*meta));
meta->skb = skb;
meta->is_last_fragment = 1;
meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
/* create a bounce buffer in zone_dma on mapping failure. */
if (b43_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) {
bounce_skb = __dev_alloc_skb(skb->len, GFP_ATOMIC | GFP_DMA);
if (!bounce_skb) {
ring->current_slot = old_top_slot;
ring->used_slots = old_used_slots;
err = -ENOMEM;
goto out_unmap_hdr;
}
memcpy(skb_put(bounce_skb, skb->len), skb->data, skb->len);
dev_kfree_skb_any(skb);
skb = bounce_skb;
meta->skb = skb;
meta->dmaaddr = map_descbuffer(ring, skb->data, skb->len, 1);
if (b43_dma_mapping_error(ring, meta->dmaaddr, skb->len, 1)) {
ring->current_slot = old_top_slot;
ring->used_slots = old_used_slots;
err = -EIO;
goto out_free_bounce;
}
}
ops->fill_descriptor(ring, desc, meta->dmaaddr, skb->len, 0, 1, 1);
if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
/* Tell the firmware about the cookie of the last
* mcast frame, so it can clear the more-data bit in it. */
b43_shm_write16(ring->dev, B43_SHM_SHARED,
B43_SHM_SH_MCASTCOOKIE, cookie);
}
/* Now transfer the whole frame. */
wmb();
ops->poke_tx(ring, next_slot(ring, slot));
return 0;
out_free_bounce:
dev_kfree_skb_any(skb);
out_unmap_hdr:
unmap_descbuffer(ring, meta_hdr->dmaaddr,
hdrsize, 1);
return err;
}
static inline int should_inject_overflow(struct b43_dmaring *ring)
{
#ifdef CONFIG_B43_DEBUG
if (unlikely(b43_debug(ring->dev, B43_DBG_DMAOVERFLOW))) {
/* Check if we should inject another ringbuffer overflow
* to test handling of this situation in the stack. */
unsigned long next_overflow;
next_overflow = ring->last_injected_overflow + HZ;
if (time_after(jiffies, next_overflow)) {
ring->last_injected_overflow = jiffies;
b43dbg(ring->dev->wl,
"Injecting TX ring overflow on "
"DMA controller %d\n", ring->index);
return 1;
}
}
#endif /* CONFIG_B43_DEBUG */
return 0;
}
/* Static mapping of mac80211's queues (priorities) to b43 DMA rings. */
static struct b43_dmaring * select_ring_by_priority(struct b43_wldev *dev,
u8 queue_prio)
{
struct b43_dmaring *ring;
if (b43_modparam_qos) {
/* 0 = highest priority */
switch (queue_prio) {
default:
B43_WARN_ON(1);
/* fallthrough */
case 0:
ring = dev->dma.tx_ring_AC_VO;
break;
case 1:
ring = dev->dma.tx_ring_AC_VI;
break;
case 2:
ring = dev->dma.tx_ring_AC_BE;
break;
case 3:
ring = dev->dma.tx_ring_AC_BK;
break;
}
} else
ring = dev->dma.tx_ring_AC_BE;
return ring;
}
int b43_dma_tx(struct b43_wldev *dev, struct sk_buff *skb)
{
struct b43_dmaring *ring;
struct ieee80211_hdr *hdr;
int err = 0;
unsigned long flags;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
hdr = (struct ieee80211_hdr *)skb->data;
if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
/* The multicast ring will be sent after the DTIM */
ring = dev->dma.tx_ring_mcast;
/* Set the more-data bit. Ucode will clear it on
* the last frame for us. */
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
} else {
/* Decide by priority where to put this frame. */
ring = select_ring_by_priority(
dev, skb_get_queue_mapping(skb));
}
spin_lock_irqsave(&ring->lock, flags);
B43_WARN_ON(!ring->tx);
if (unlikely(free_slots(ring) < SLOTS_PER_PACKET)) {
b43warn(dev->wl, "DMA queue overflow\n");
err = -ENOSPC;
goto out_unlock;
}
/* Check if the queue was stopped in mac80211,
* but we got called nevertheless.
* That would be a mac80211 bug. */
B43_WARN_ON(ring->stopped);
/* Assign the queue number to the ring (if not already done before)
* so TX status handling can use it. The queue to ring mapping is
* static, so we don't need to store it per frame. */
ring->queue_prio = skb_get_queue_mapping(skb);
err = dma_tx_fragment(ring, skb);
if (unlikely(err == -ENOKEY)) {
/* Drop this packet, as we don't have the encryption key
* anymore and must not transmit it unencrypted. */
dev_kfree_skb_any(skb);
err = 0;
goto out_unlock;
}
if (unlikely(err)) {
b43err(dev->wl, "DMA tx mapping failure\n");
goto out_unlock;
}
ring->nr_tx_packets++;
if ((free_slots(ring) < SLOTS_PER_PACKET) ||
should_inject_overflow(ring)) {
/* This TX ring is full. */
ieee80211_stop_queue(dev->wl->hw, skb_get_queue_mapping(skb));
ring->stopped = 1;
if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
b43dbg(dev->wl, "Stopped TX ring %d\n", ring->index);
}
}
out_unlock:
spin_unlock_irqrestore(&ring->lock, flags);
return err;
}
/* Called with IRQs disabled. */
void b43_dma_handle_txstatus(struct b43_wldev *dev,
const struct b43_txstatus *status)
{
const struct b43_dma_ops *ops;
struct b43_dmaring *ring;
struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
int slot;
bool frame_succeed;
ring = parse_cookie(dev, status->cookie, &slot);
if (unlikely(!ring))
return;
spin_lock(&ring->lock); /* IRQs are already disabled. */
B43_WARN_ON(!ring->tx);
ops = ring->ops;
while (1) {
B43_WARN_ON(!(slot >= 0 && slot < ring->nr_slots));
desc = ops->idx2desc(ring, slot, &meta);
if (meta->skb)
unmap_descbuffer(ring, meta->dmaaddr, meta->skb->len,
1);
else
unmap_descbuffer(ring, meta->dmaaddr,
b43_txhdr_size(dev), 1);
if (meta->is_last_fragment) {
struct ieee80211_tx_info *info;
BUG_ON(!meta->skb);
info = IEEE80211_SKB_CB(meta->skb);
memset(&info->status, 0, sizeof(info->status));
/*
* Call back to inform the ieee80211 subsystem about
* the status of the transmission.
*/
frame_succeed = b43_fill_txstatus_report(info, status);
#ifdef CONFIG_B43_DEBUG
if (frame_succeed)
ring->nr_succeed_tx_packets++;
else
ring->nr_failed_tx_packets++;
ring->nr_total_packet_tries += status->frame_count;
#endif /* DEBUG */
ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb);
/* skb is freed by ieee80211_tx_status_irqsafe() */
meta->skb = NULL;
} else {
/* No need to call free_descriptor_buffer here, as
* this is only the txhdr, which is not allocated.
*/
B43_WARN_ON(meta->skb);
}
/* Everything unmapped and free'd. So it's not used anymore. */
ring->used_slots--;
if (meta->is_last_fragment)
break;
slot = next_slot(ring, slot);
}
dev->stats.last_tx = jiffies;
if (ring->stopped) {
B43_WARN_ON(free_slots(ring) < SLOTS_PER_PACKET);
ieee80211_wake_queue(dev->wl->hw, ring->queue_prio);
ring->stopped = 0;
if (b43_debug(dev, B43_DBG_DMAVERBOSE)) {
b43dbg(dev->wl, "Woke up TX ring %d\n", ring->index);
}
}
spin_unlock(&ring->lock);
}
void b43_dma_get_tx_stats(struct b43_wldev *dev,
struct ieee80211_tx_queue_stats *stats)
{
const int nr_queues = dev->wl->hw->queues;
struct b43_dmaring *ring;
unsigned long flags;
int i;
for (i = 0; i < nr_queues; i++) {
ring = select_ring_by_priority(dev, i);
spin_lock_irqsave(&ring->lock, flags);
stats[i].len = ring->used_slots / SLOTS_PER_PACKET;
stats[i].limit = ring->nr_slots / SLOTS_PER_PACKET;
stats[i].count = ring->nr_tx_packets;
spin_unlock_irqrestore(&ring->lock, flags);
}
}
static void dma_rx(struct b43_dmaring *ring, int *slot)
{
const struct b43_dma_ops *ops = ring->ops;
struct b43_dmadesc_generic *desc;
struct b43_dmadesc_meta *meta;
struct b43_rxhdr_fw4 *rxhdr;
struct sk_buff *skb;
u16 len;
int err;
dma_addr_t dmaaddr;
desc = ops->idx2desc(ring, *slot, &meta);
sync_descbuffer_for_cpu(ring, meta->dmaaddr, ring->rx_buffersize);
skb = meta->skb;
rxhdr = (struct b43_rxhdr_fw4 *)skb->data;
len = le16_to_cpu(rxhdr->frame_len);
if (len == 0) {
int i = 0;
do {
udelay(2);
barrier();
len = le16_to_cpu(rxhdr->frame_len);
} while (len == 0 && i++ < 5);
if (unlikely(len == 0)) {
/* recycle the descriptor buffer. */
sync_descbuffer_for_device(ring, meta->dmaaddr,
ring->rx_buffersize);
goto drop;
}
}
if (unlikely(len > ring->rx_buffersize)) {
/* The data did not fit into one descriptor buffer
* and is split over multiple buffers.
* This should never happen, as we try to allocate buffers
* big enough. So simply ignore this packet.
*/
int cnt = 0;
s32 tmp = len;
while (1) {
desc = ops->idx2desc(ring, *slot, &meta);
/* recycle the descriptor buffer. */
sync_descbuffer_for_device(ring, meta->dmaaddr,
ring->rx_buffersize);
*slot = next_slot(ring, *slot);
cnt++;
tmp -= ring->rx_buffersize;
if (tmp <= 0)
break;
}
b43err(ring->dev->wl, "DMA RX buffer too small "
"(len: %u, buffer: %u, nr-dropped: %d)\n",
len, ring->rx_buffersize, cnt);
goto drop;
}
dmaaddr = meta->dmaaddr;
err = setup_rx_descbuffer(ring, desc, meta, GFP_ATOMIC);
if (unlikely(err)) {
b43dbg(ring->dev->wl, "DMA RX: setup_rx_descbuffer() failed\n");
sync_descbuffer_for_device(ring, dmaaddr, ring->rx_buffersize);
goto drop;
}
unmap_descbuffer(ring, dmaaddr, ring->rx_buffersize, 0);
skb_put(skb, len + ring->frameoffset);
skb_pull(skb, ring->frameoffset);
b43_rx(ring->dev, skb, rxhdr);
drop:
return;
}
void b43_dma_rx(struct b43_dmaring *ring)
{
const struct b43_dma_ops *ops = ring->ops;
int slot, current_slot;
int used_slots = 0;
B43_WARN_ON(ring->tx);
current_slot = ops->get_current_rxslot(ring);
B43_WARN_ON(!(current_slot >= 0 && current_slot < ring->nr_slots));
slot = ring->current_slot;
for (; slot != current_slot; slot = next_slot(ring, slot)) {
dma_rx(ring, &slot);
update_max_used_slots(ring, ++used_slots);
}
ops->set_current_rxslot(ring, slot);
ring->current_slot = slot;
}
static void b43_dma_tx_suspend_ring(struct b43_dmaring *ring)
{
unsigned long flags;
spin_lock_irqsave(&ring->lock, flags);
B43_WARN_ON(!ring->tx);
ring->ops->tx_suspend(ring);
spin_unlock_irqrestore(&ring->lock, flags);
}
static void b43_dma_tx_resume_ring(struct b43_dmaring *ring)
{
unsigned long flags;
spin_lock_irqsave(&ring->lock, flags);
B43_WARN_ON(!ring->tx);
ring->ops->tx_resume(ring);
spin_unlock_irqrestore(&ring->lock, flags);
}
void b43_dma_tx_suspend(struct b43_wldev *dev)
{
b43_power_saving_ctl_bits(dev, B43_PS_AWAKE);
b43_dma_tx_suspend_ring(dev->dma.tx_ring_AC_BK);
b43_dma_tx_suspend_ring(dev->dma.tx_ring_AC_BE);
b43_dma_tx_suspend_ring(dev->dma.tx_ring_AC_VI);
b43_dma_tx_suspend_ring(dev->dma.tx_ring_AC_VO);
b43_dma_tx_suspend_ring(dev->dma.tx_ring_mcast);
}
void b43_dma_tx_resume(struct b43_wldev *dev)
{
b43_dma_tx_resume_ring(dev->dma.tx_ring_mcast);
b43_dma_tx_resume_ring(dev->dma.tx_ring_AC_VO);
b43_dma_tx_resume_ring(dev->dma.tx_ring_AC_VI);
b43_dma_tx_resume_ring(dev->dma.tx_ring_AC_BE);
b43_dma_tx_resume_ring(dev->dma.tx_ring_AC_BK);
b43_power_saving_ctl_bits(dev, 0);
}
#ifdef CONFIG_B43_PIO
static void direct_fifo_rx(struct b43_wldev *dev, enum b43_dmatype type,
u16 mmio_base, bool enable)
{
u32 ctl;
if (type == B43_DMA_64BIT) {
ctl = b43_read32(dev, mmio_base + B43_DMA64_RXCTL);
ctl &= ~B43_DMA64_RXDIRECTFIFO;
if (enable)
ctl |= B43_DMA64_RXDIRECTFIFO;
b43_write32(dev, mmio_base + B43_DMA64_RXCTL, ctl);
} else {
ctl = b43_read32(dev, mmio_base + B43_DMA32_RXCTL);
ctl &= ~B43_DMA32_RXDIRECTFIFO;
if (enable)
ctl |= B43_DMA32_RXDIRECTFIFO;
b43_write32(dev, mmio_base + B43_DMA32_RXCTL, ctl);
}
}
/* Enable/Disable Direct FIFO Receive Mode (PIO) on a RX engine.
* This is called from PIO code, so DMA structures are not available. */
void b43_dma_direct_fifo_rx(struct b43_wldev *dev,
unsigned int engine_index, bool enable)
{
enum b43_dmatype type;
u16 mmio_base;
type = dma_mask_to_engine_type(supported_dma_mask(dev));
mmio_base = b43_dmacontroller_base(type, engine_index);
direct_fifo_rx(dev, type, mmio_base, enable);
}
#endif /* CONFIG_B43_PIO */
On Tue, Jun 10, 2008 at 6:15 PM, Michael Buesch <[email protected]> wrote:
> On Wednesday 11 June 2008 00:09:27 Miles Lane wrote:
>> I got a slightly different BUG with this patch applied:
>>
>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> IP: [<f89e3d41>] :b43:b43_dma_mapping_error+0x16/0x97
>
> So can you please debug this? This is trivial. Just add a few printks
> to see which pointer is NULL.
> As I said I don't have this tree and really like to avoid fetching
> and building yet another tree.
>
> --
> Greetings Michael.
>
Sorry, I forgot to label the kernel tree. It is 2.6.26-rc5-mm2.
On Tue, Jun 10, 2008 at 10:37 AM, Michael Buesch <[email protected]> wrote:
> On Tuesday 10 June 2008 16:34:21 Michael Buesch wrote:
>> On Tuesday 10 June 2008 16:29:17 Vegard Nossum wrote:
>> > On Tue, Jun 10, 2008 at 4:23 PM, Michael Buesch <[email protected]> wrote:
>> > > On Tuesday 10 June 2008 16:09:37 Miles Lane wrote:
>> > >> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> > >> IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
>> > >
>> > >
>> > > It seems to crash at
>> > > 60 extern const struct dma_mapping_ops *dma_ops;
>> > > 61
>> > > 62 static inline int dma_mapping_error(dma_addr_t dma_addr)
>> > > 63 {
>> > > 64 if (dma_ops->mapping_error)
>> > > 65 return dma_ops->mapping_error(dma_addr);
>> > > 66
>> > > 67 return (dma_addr == bad_dma_address);
>> > > 68 }
>> >
>> > No, this is wrong.
>> >
>> > /* Check if a DMA mapping address is invalid. */
>> > static bool b43_dma_mapping_error(struct b43_dmaring *ring,
>> > dma_addr_t addr,
>> > size_t buffersize, bool dma_to_device)
>> > {
>> > if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>> >
>> > It crashes on this line ---^
>>
>> Which calls dma_mapping_error(), correct?
>>
>> But you are right. I see the bug now.
>> ring->dev is assigned after the call.
>> I wonder why it works reliably on all of my machines.
>>
>
> Ehm no wait a second...
> What strange tree are you looking at?
> This is a copy of the code from my local tree.
>
> 516 /* Check if a DMA mapping address is invalid. */
> 517 static bool b43_dma_mapping_error(struct b43_dmaring *ring,
> 518 dma_addr_t addr,
> 519 size_t buffersize, bool dma_to_device)
> 520 {
> 521 if (unlikely(dma_mapping_error(addr)))
> 522 return 1;
>
> This code is perfectly fine.
> This must be some merge error in some upstream tree.
>
> --
> Greetings Michael.
>