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Commit 6da2b234 authored by Linus Torvalds's avatar Linus Torvalds
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Merge http://lia64.bkbits.net/linux-ia64-release-2.6.11 

into ppc970.osdl.org:/home/torvalds/v2.6/linux
parents b9b61107 a75f8710
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Showing with 387 additions and 178 deletions
arch/ia64/configs/zx1_defconfig
View file @ 6da2b234
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.9-rc2-aegl
# Mon Sep 27 19:03:13 2004
# Linux kernel version: 2.6.10
# Wed Dec 29 09:05:48 2004
#
#
......@@ -11,6 +11,7 @@ CONFIG_EXPERIMENTAL=y
# CONFIG_CLEAN_COMPILE is not set
CONFIG_BROKEN=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_LOCK_KERNEL=y
#
# General setup
......@@ -25,6 +26,7 @@ CONFIG_SYSCTL=y
# CONFIG_AUDIT is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_HOTPLUG=y
CONFIG_KOBJECT_UEVENT=y
# CONFIG_IKCONFIG is not set
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
......@@ -32,12 +34,12 @@ CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SHMEM=y
CONFIG_CC_ALIGN_FUNCTIONS=0
CONFIG_CC_ALIGN_LABELS=0
CONFIG_CC_ALIGN_LOOPS=0
CONFIG_CC_ALIGN_JUMPS=0
# CONFIG_TINY_SHMEM is not set
#
......@@ -47,6 +49,7 @@ CONFIG_MODULES=y
# CONFIG_MODULE_UNLOAD is not set
CONFIG_OBSOLETE_MODPARM=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_KMOD is not set
#
......@@ -83,6 +86,7 @@ CONFIG_NR_CPUS=16
CONFIG_HAVE_DEC_LOCK=y
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y
......@@ -106,9 +110,11 @@ CONFIG_ACPI=y
CONFIG_ACPI_BOOT=y
CONFIG_ACPI_INTERPRETER=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_BLACKLIST_YEAR=0
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_BUS=y
CONFIG_ACPI_POWER=y
......@@ -136,9 +142,13 @@ CONFIG_HOTPLUG_PCI_ACPI=y
# CONFIG_HOTPLUG_PCI_SHPC is not set
#
# PCMCIA/CardBus support
# PCCARD (PCMCIA/CardBus) support
#
# CONFIG_PCCARD is not set
#
# PC-card bridges
#
# CONFIG_PCMCIA is not set
#
# Device Drivers
......@@ -165,6 +175,7 @@ CONFIG_PREVENT_FIRMWARE_BUILD=y
#
# Plug and Play support
#
# CONFIG_PNP is not set
#
# Block devices
......@@ -179,8 +190,19 @@ CONFIG_BLK_DEV_LOOP=y
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_CDROM_PKTCDVD is not set
#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
#
# ATA/ATAPI/MFM/RLL support
......@@ -199,7 +221,6 @@ CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_IDE_TASK_IOCTL is not set
# CONFIG_IDE_TASKFILE_IO is not set
#
# IDE chipset support/bugfixes
......@@ -303,6 +324,7 @@ CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
# CONFIG_SCSI_QLOGIC_ISP is not set
# CONFIG_SCSI_QLOGIC_FC is not set
CONFIG_SCSI_QLOGIC_1280=y
# CONFIG_SCSI_QLOGIC_1280_1040 is not set
CONFIG_SCSI_QLA2XXX=y
# CONFIG_SCSI_QLA21XX is not set
# CONFIG_SCSI_QLA22XX is not set
......@@ -362,6 +384,8 @@ CONFIG_IP_MULTICAST=y
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_TUNNEL is not set
# CONFIG_IP_TCPDIAG is not set
# CONFIG_IP_TCPDIAG_IPV6 is not set
#
# IP: Virtual Server Configuration
......@@ -375,6 +399,7 @@ CONFIG_NETFILTER=y
# IP: Netfilter Configuration
#
# CONFIG_IP_NF_CONNTRACK is not set
# CONFIG_IP_NF_CONNTRACK_MARK is not set
# CONFIG_IP_NF_QUEUE is not set
# CONFIG_IP_NF_IPTABLES is not set
CONFIG_IP_NF_ARPTABLES=y
......@@ -399,7 +424,6 @@ CONFIG_IP_NF_ARPTABLES=y
# CONFIG_NET_DIVERT is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_HW_FLOWCONTROL is not set
#
# QoS and/or fair queueing
......@@ -469,7 +493,6 @@ CONFIG_E100=y
# CONFIG_EPIC100 is not set
# CONFIG_SUNDANCE is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_VIA_VELOCITY is not set
#
# Ethernet (1000 Mbit)
......@@ -483,6 +506,7 @@ CONFIG_E1000=y
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
# CONFIG_SK98LIN is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_TIGON3=y
#
......@@ -653,6 +677,7 @@ CONFIG_I2C_ALGOPCF=y
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
# CONFIG_I2C_SIS96X is not set
# CONFIG_I2C_STUB is not set
# CONFIG_I2C_VIA is not set
# CONFIG_I2C_VIAPRO is not set
# CONFIG_I2C_VOODOO3 is not set
......@@ -664,20 +689,24 @@ CONFIG_I2C_ALGOPCF=y
# CONFIG_I2C_SENSOR is not set
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ASB100 is not set
# CONFIG_SENSORS_DS1621 is not set
# CONFIG_SENSORS_FSCHER is not set
# CONFIG_SENSORS_GL518SM is not set
# CONFIG_SENSORS_IT87 is not set
# CONFIG_SENSORS_LM63 is not set
# CONFIG_SENSORS_LM75 is not set
# CONFIG_SENSORS_LM77 is not set
# CONFIG_SENSORS_LM78 is not set
# CONFIG_SENSORS_LM80 is not set
# CONFIG_SENSORS_LM83 is not set
# CONFIG_SENSORS_LM85 is not set
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_SMSC47M1 is not set
# CONFIG_SENSORS_VIA686A is not set
# CONFIG_SENSORS_W83781D is not set
......@@ -708,7 +737,37 @@ CONFIG_I2C_ALGOPCF=y
#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set
CONFIG_VIDEO_DEV=y
#
# Video For Linux
#
#
# Video Adapters
#
# CONFIG_VIDEO_BT848 is not set
# CONFIG_VIDEO_CPIA is not set
# 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_ZR36120 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_OVCAMCHIP is not set
#
# Radio Adapters
#
# CONFIG_RADIO_GEMTEK_PCI is not set
# CONFIG_RADIO_MAXIRADIO is not set
# CONFIG_RADIO_MAESTRO is not set
#
# Digital Video Broadcasting Devices
......@@ -720,6 +779,7 @@ CONFIG_I2C_ALGOPCF=y
#
CONFIG_FB=y
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
......@@ -733,6 +793,7 @@ CONFIG_FB_RADEON_I2C=y
CONFIG_FB_RADEON_DEBUG=y
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY 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
......@@ -763,7 +824,87 @@ CONFIG_LOGO_LINUX_CLUT224=y
#
# Sound
#
# CONFIG_SOUND is not set
CONFIG_SOUND=y
#
# Advanced Linux Sound Architecture
#
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_HWDEP=y
CONFIG_SND_RAWMIDI=y
CONFIG_SND_SEQUENCER=y
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_SEQUENCER_OSS=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
#
# Generic devices
#
CONFIG_SND_MPU401_UART=y
CONFIG_SND_OPL3_LIB=y
# CONFIG_SND_DUMMY is not set
# CONFIG_SND_VIRMIDI is not set
# CONFIG_SND_MTPAV is not set
# CONFIG_SND_SERIAL_U16550 is not set
# CONFIG_SND_MPU401 is not set
#
# PCI devices
#
CONFIG_SND_AC97_CODEC=y
# 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_AZT3328 is not set
# CONFIG_SND_BT87X is not set
# CONFIG_SND_CS46XX is not set
# CONFIG_SND_CS4281 is not set
# CONFIG_SND_EMU10K1 is not set
# CONFIG_SND_KORG1212 is not set
# CONFIG_SND_MIXART is not set
# CONFIG_SND_NM256 is not set
# CONFIG_SND_RME32 is not set
# CONFIG_SND_RME96 is not set
# CONFIG_SND_RME9652 is not set
# CONFIG_SND_HDSP is not set
# CONFIG_SND_TRIDENT is not set
# CONFIG_SND_YMFPCI is not set
# CONFIG_SND_ALS4000 is not set
# CONFIG_SND_CMIPCI 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_MAESTRO3 is not set
CONFIG_SND_FM801=y
CONFIG_SND_FM801_TEA575X=y
# CONFIG_SND_ICE1712 is not set
# CONFIG_SND_ICE1724 is not set
# CONFIG_SND_INTEL8X0 is not set
# CONFIG_SND_INTEL8X0M is not set
# CONFIG_SND_SONICVIBES is not set
# CONFIG_SND_VIA82XX is not set
# CONFIG_SND_VX222 is not set
#
# USB devices
#
# CONFIG_SND_USB_AUDIO is not set
# CONFIG_SND_USB_USX2Y is not set
#
# Open Sound System
#
# CONFIG_SOUND_PRIME is not set
#
# USB support
......@@ -779,6 +920,8 @@ CONFIG_USB_BANDWIDTH=y
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
#
# USB Host Controller Drivers
......@@ -788,13 +931,20 @@ CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_SL811_HCD is not set
#
# USB Device Class drivers
#
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_BLUETOOTH_TTY is not set
# CONFIG_USB_MIDI is not set
# CONFIG_USB_ACM is not set
# CONFIG_USB_PRINTER is not set
#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be needed; see USB_STORAGE Help for more information
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_RW_DETECT is not set
......@@ -808,7 +958,7 @@ CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_JUMPSHOT is not set
#
# USB Human Interface Devices (HID)
# USB Input Devices
#
CONFIG_USB_HID=y
CONFIG_USB_HIDINPUT=y
......@@ -834,13 +984,17 @@ CONFIG_USB_HIDDEV=y
# USB Multimedia devices
#
# CONFIG_USB_DABUSB is not set
# CONFIG_USB_VICAM is not set
# CONFIG_USB_DSBR is not set
# CONFIG_USB_IBMCAM is not set
# CONFIG_USB_KONICAWC is not set
# CONFIG_USB_OV511 is not set
# CONFIG_USB_SE401 is not set
# CONFIG_USB_SN9C102 is not set
# CONFIG_USB_STV680 is not set
#
# Video4Linux support is needed for USB Multimedia device support
#
#
# USB Network adaptors
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
......@@ -869,13 +1023,23 @@ CONFIG_USB_HIDDEV=y
# CONFIG_USB_LCD is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGETKIT is not set
# CONFIG_USB_PHIDGETSERVO is not set
#
# USB ATM/DSL drivers
#
#
# USB Gadget Support
#
# CONFIG_USB_GADGET is not set
#
# MMC/SD Card support
#
# CONFIG_MMC is not set
#
# File systems
#
......@@ -896,6 +1060,7 @@ CONFIG_FS_MBCACHE=y
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
# CONFIG_QUOTA is not set
CONFIG_DNOTIFY=y
CONFIG_AUTOFS_FS=y
# CONFIG_AUTOFS4_FS is not set
......@@ -927,6 +1092,8 @@ CONFIG_SYSFS=y
# CONFIG_DEVFS_FS is not set
# CONFIG_DEVPTS_FS_XATTR is not set
CONFIG_TMPFS=y
CONFIG_TMPFS_XATTR=y
CONFIG_TMPFS_SECURITY=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_RAMFS=y
......@@ -1053,9 +1220,11 @@ CONFIG_CRC32=y
#
CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_INFO is not set
CONFIG_IA64_GRANULE_16MB=y
# CONFIG_IA64_GRANULE_64MB is not set
......@@ -1068,6 +1237,7 @@ CONFIG_SYSVIPC_COMPAT=y
#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set
#
......@@ -1081,7 +1251,7 @@ CONFIG_CRYPTO_MD5=y
# CONFIG_CRYPTO_SHA1 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_WHIRLPOOL is not set
# CONFIG_CRYPTO_WP512 is not set
CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_TWOFISH is not set
......@@ -1092,7 +1262,12 @@ CONFIG_CRYPTO_DES=y
# CONFIG_CRYPTO_TEA is not set
# CONFIG_CRYPTO_ARC4 is not set
# CONFIG_CRYPTO_KHAZAD is not set
# CONFIG_CRYPTO_ANUBIS is not set
# CONFIG_CRYPTO_DEFLATE is not set
# CONFIG_CRYPTO_MICHAEL_MIC is not set
# CONFIG_CRYPTO_CRC32C is not set
# CONFIG_CRYPTO_TEST is not set
#
# Hardware crypto devices
#
arch/ia64/kernel/irq_ia64.c
View file @ 6da2b234
......@@ -119,7 +119,7 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
* switched atomically.
*/
bsp = ia64_getreg(_IA64_REG_AR_BSP);
sp = ia64_getreg(_IA64_REG_AR_SP);
sp = ia64_getreg(_IA64_REG_SP);
if ((sp - bsp) < 1024) {
static unsigned char count;
......
arch/ia64/kernel/perfmon.c
View file @ 6da2b234
......@@ -2160,9 +2160,7 @@ pfm_alloc_fd(struct file **cfile)
DPRINT(("new inode ino=%ld @%p\n", inode->i_ino, inode));
inode->i_sb = pfmfs_mnt->mnt_sb;
inode->i_mode = S_IFCHR|S_IRUGO;
inode->i_sock = 0;
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
......
arch/ia64/lib/io.c
View file @ 6da2b234
......@@ -8,8 +8,7 @@
* Copy data from IO memory space to "real" memory space.
* This needs to be optimized.
*/
void
__ia64_memcpy_fromio (void *to, volatile void __iomem *from, long count)
void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
{
char *dst = to;
......@@ -18,30 +17,28 @@ __ia64_memcpy_fromio (void *to, volatile void __iomem *from, long count)
*dst++ = readb(from++);
}
}
EXPORT_SYMBOL(__ia64_memcpy_fromio);
EXPORT_SYMBOL(memcpy_fromio);
/*
* Copy data from "real" memory space to IO memory space.
* This needs to be optimized.
*/
void
__ia64_memcpy_toio (volatile void __iomem *to, void *from, long count)
void memcpy_toio(volatile void __iomem *to, const void *from, long count)
{
char *src = from;
const char *src = from;
while (count) {
count--;
writeb(*src++, to++);
}
}
EXPORT_SYMBOL(__ia64_memcpy_toio);
EXPORT_SYMBOL(memcpy_toio);
/*
* "memset" on IO memory space.
* This needs to be optimized.
*/
void
__ia64_memset_c_io (volatile void __iomem *dst, unsigned long c, long count)
void memset_io(volatile void __iomem *dst, int c, long count)
{
unsigned char ch = (char)(c & 0xff);
......@@ -51,7 +48,7 @@ __ia64_memset_c_io (volatile void __iomem *dst, unsigned long c, long count)
dst++;
}
}
EXPORT_SYMBOL(__ia64_memset_c_io);
EXPORT_SYMBOL(memset_io);
#ifdef CONFIG_IA64_GENERIC
......
arch/ia64/lib/swiotlb.c
View file @ 6da2b234
......@@ -44,41 +44,44 @@
#define IO_TLB_SEGSIZE 128
/*
* log of the size of each IO TLB slab. The number of slabs is command line controllable.
* log of the size of each IO TLB slab. The number of slabs is command line
* controllable.
*/
#define IO_TLB_SHIFT 11
int swiotlb_force;
/*
* Used to do a quick range check in swiotlb_unmap_single and swiotlb_sync_single_*, to see
* if the memory was in fact allocated by this API.
* Used to do a quick range check in swiotlb_unmap_single and
* swiotlb_sync_single_*, to see if the memory was in fact allocated by this
* API.
*/
static char *io_tlb_start, *io_tlb_end;
/*
* The number of IO TLB blocks (in groups of 64) betweeen io_tlb_start and io_tlb_end.
* This is command line adjustable via setup_io_tlb_npages.
* The number of IO TLB blocks (in groups of 64) betweeen io_tlb_start and
* io_tlb_end. This is command line adjustable via setup_io_tlb_npages.
* Default to 64MB.
*/
static unsigned long io_tlb_nslabs = 32768;
/*
/*
* When the IOMMU overflows we return a fallback buffer. This sets the size.
*/
static unsigned long io_tlb_overflow = 32*1024;
void *io_tlb_overflow_buffer;
void *io_tlb_overflow_buffer;
/*
* This is a free list describing the number of free entries available from each index
* This is a free list describing the number of free entries available from
* each index
*/
static unsigned int *io_tlb_list;
static unsigned int io_tlb_index;
/*
* We need to save away the original address corresponding to a mapped entry for the sync
* operations.
* We need to save away the original address corresponding to a mapped entry
* for the sync operations.
*/
static unsigned char **io_tlb_orig_addr;
......@@ -88,10 +91,11 @@ static unsigned char **io_tlb_orig_addr;
static spinlock_t io_tlb_lock = SPIN_LOCK_UNLOCKED;
static int __init
setup_io_tlb_npages (char *str)
setup_io_tlb_npages(char *str)
{
if (isdigit(*str)) {
io_tlb_nslabs = simple_strtoul(str, &str, 0) << (PAGE_SHIFT - IO_TLB_SHIFT);
if (isdigit(*str)) {
io_tlb_nslabs = simple_strtoul(str, &str, 0) <<
(PAGE_SHIFT - IO_TLB_SHIFT);
/* avoid tail segment of size < IO_TLB_SEGSIZE */
io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
}
......@@ -105,18 +109,19 @@ __setup("swiotlb=", setup_io_tlb_npages);
/* make io_tlb_overflow tunable too? */
/*
* Statically reserve bounce buffer space and initialize bounce buffer data structures for
* the software IO TLB used to implement the PCI DMA API.
* Statically reserve bounce buffer space and initialize bounce buffer data
* structures for the software IO TLB used to implement the PCI DMA API.
*/
void
swiotlb_init (void)
swiotlb_init(void)
{
unsigned long i;
/*
* Get IO TLB memory from the low pages
*/
io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs * (1 << IO_TLB_SHIFT));
io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs *
(1 << IO_TLB_SHIFT));
if (!io_tlb_start)
panic("Cannot allocate SWIOTLB buffer");
io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT);
......@@ -131,28 +136,30 @@ swiotlb_init (void)
io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
io_tlb_index = 0;
io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(char *));
/*
* Get the overflow emergency buffer
/*
* Get the overflow emergency buffer
*/
io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n",
virt_to_phys(io_tlb_start), virt_to_phys(io_tlb_end));
}
static inline int address_needs_mapping(struct device *hwdev, dma_addr_t addr)
{
dma_addr_t mask = 0xffffffff;
if (hwdev && hwdev->dma_mask)
mask = *hwdev->dma_mask;
return (addr & ~mask) != 0;
}
static inline int
address_needs_mapping(struct device *hwdev, dma_addr_t addr)
{
dma_addr_t mask = 0xffffffff;
/* If the device has a mask, use it, otherwise default to 32 bits */
if (hwdev && hwdev->dma_mask)
mask = *hwdev->dma_mask;
return (addr & ~mask) != 0;
}
/*
* Allocates bounce buffer and returns its kernel virtual address.
*/
static void *
map_single (struct device *hwdev, char *buffer, size_t size, int dir)
map_single(struct device *hwdev, char *buffer, size_t size, int dir)
{
unsigned long flags;
char *dma_addr;
......@@ -160,11 +167,11 @@ map_single (struct device *hwdev, char *buffer, size_t size, int dir)
int i;
/*
* For mappings greater than a page size, we limit the stride (and hence alignment)
* to a page size.
* For mappings greater than a page, we limit the stride (and
* hence alignment) to a page size.
*/
nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
if (size > (1 << PAGE_SHIFT))
if (size > PAGE_SIZE)
stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT));
else
stride = 1;
......@@ -173,8 +180,8 @@ map_single (struct device *hwdev, char *buffer, size_t size, int dir)
BUG();
/*
* Find suitable number of IO TLB entries size that will fit this request and
* allocate a buffer from that IO TLB pool.
* Find suitable number of IO TLB entries size that will fit this
* request and allocate a buffer from that IO TLB pool.
*/
spin_lock_irqsave(&io_tlb_lock, flags);
{
......@@ -185,22 +192,23 @@ map_single (struct device *hwdev, char *buffer, size_t size, int dir)
do {
/*
* If we find a slot that indicates we have 'nslots' number of
* contiguous buffers, we allocate the buffers from that slot and
* mark the entries as '0' indicating unavailable.
* If we find a slot that indicates we have 'nslots'
* number of contiguous buffers, we allocate the
* buffers from that slot and mark the entries as '0'
* indicating unavailable.
*/
if (io_tlb_list[index] >= nslots) {
int count = 0;
for (i = index; i < (int) (index + nslots); i++)
io_tlb_list[i] = 0;
for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1)
&& io_tlb_list[i]; i--)
for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--)
io_tlb_list[i] = ++count;
dma_addr = io_tlb_start + (index << IO_TLB_SHIFT);
/*
* Update the indices to avoid searching in the next round.
* Update the indices to avoid searching in
* the next round.
*/
io_tlb_index = ((index + nslots) < io_tlb_nslabs
? (index + nslots) : 0);
......@@ -219,8 +227,9 @@ map_single (struct device *hwdev, char *buffer, size_t size, int dir)
spin_unlock_irqrestore(&io_tlb_lock, flags);
/*
* Save away the mapping from the original address to the DMA address. This is
* needed when we sync the memory. Then we sync the buffer if needed.
* Save away the mapping from the original address to the DMA address.
* This is needed when we sync the memory. Then we sync the buffer if
* needed.
*/
io_tlb_orig_addr[index] = buffer;
if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)
......@@ -233,52 +242,51 @@ map_single (struct device *hwdev, char *buffer, size_t size, int dir)
* dma_addr is the kernel virtual address of the bounce buffer to unmap.
*/
static void
unmap_single (struct device *hwdev, char *dma_addr, size_t size, int dir)
unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
{
unsigned long flags;
int i, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
char *buffer = io_tlb_orig_addr[index];
/*
* First, sync the memory before unmapping the entry
*/
if ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL))
if (buffer && ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL)))
/*
* bounce... copy the data back into the original buffer * and delete the
* bounce buffer.
* bounce... copy the data back into the original buffer * and
* delete the bounce buffer.
*/
memcpy(buffer, dma_addr, size);
/*
* Return the buffer to the free list by setting the corresponding entries to
* indicate the number of contigous entries available. While returning the
* entries to the free list, we merge the entries with slots below and above the
* pool being returned.
* Return the buffer to the free list by setting the corresponding
* entries to indicate the number of contigous entries available.
* While returning the entries to the free list, we merge the entries
* with slots below and above the pool being returned.
*/
spin_lock_irqsave(&io_tlb_lock, flags);
{
int count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ?
io_tlb_list[index + nslots] : 0);
count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ?
io_tlb_list[index + nslots] : 0);
/*
* Step 1: return the slots to the free list, merging the slots with
* superceeding slots
* Step 1: return the slots to the free list, merging the
* slots with superceeding slots
*/
for (i = index + nslots - 1; i >= index; i--)
io_tlb_list[i] = ++count;
/*
* Step 2: merge the returned slots with the preceding slots, if
* available (non zero)
* Step 2: merge the returned slots with the preceding slots,
* if available (non zero)
*/
for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) &&
io_tlb_list[i]; i--)
for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--)
io_tlb_list[i] = ++count;
}
spin_unlock_irqrestore(&io_tlb_lock, flags);
}
static void
sync_single (struct device *hwdev, char *dma_addr, size_t size, int dir)
sync_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
{
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
char *buffer = io_tlb_orig_addr[index];
......@@ -296,17 +304,36 @@ sync_single (struct device *hwdev, char *dma_addr, size_t size, int dir)
}
void *
swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handle, int flags)
swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, int flags)
{
unsigned long dev_addr;
void *ret;
int order = get_order(size);
/* XXX fix me: the DMA API should pass us an explicit DMA mask instead: */
/*
* XXX fix me: the DMA API should pass us an explicit DMA mask
* instead, or use ZONE_DMA32 (ia64 overloads ZONE_DMA to be a ~32
* bit range instead of a 16MB one).
*/
flags |= GFP_DMA;
ret = (void *)__get_free_pages(flags, get_order(size));
ret = (void *)__get_free_pages(flags, order);
if (ret && address_needs_mapping(hwdev, virt_to_phys(ret))) {
/*
* The allocated memory isn't reachable by the device.
* Fall back on swiotlb_map_single().
*/
free_pages((unsigned long) ret, order);
ret = NULL;
}
if (!ret) {
/* DMA_FROM_DEVICE is to avoid the memcpy in map_single */
/*
* We are either out of memory or the device can't DMA
* to GFP_DMA memory; fall back on
* swiotlb_map_single(), which will grab memory from
* the lowest available address range.
*/
dma_addr_t handle;
handle = swiotlb_map_single(NULL, NULL, size, DMA_FROM_DEVICE);
if (dma_mapping_error(handle))
......@@ -317,14 +344,21 @@ swiotlb_alloc_coherent (struct device *hwdev, size_t size, dma_addr_t *dma_handl
memset(ret, 0, size);
dev_addr = virt_to_phys(ret);
if (address_needs_mapping(hwdev,dev_addr))
panic("swiotlb_alloc_consistent: allocated memory is out of range for device");
/* Confirm address can be DMA'd by device */
if (address_needs_mapping(hwdev, dev_addr)) {
printk("hwdev DMA mask = 0x%016lx, dev_addr = 0x%016lx\n",
*hwdev->dma_mask, dev_addr);
panic("swiotlb_alloc_coherent: allocated memory is out of "
"range for device");
}
*dma_handle = dev_addr;
return ret;
}
void
swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
dma_addr_t dma_handle)
{
if (!(vaddr >= (void *)io_tlb_start
&& vaddr < (void *)io_tlb_end))
......@@ -334,66 +368,63 @@ swiotlb_free_coherent (struct device *hwdev, size_t size, void *vaddr, dma_addr_
swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE);
}
static void swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
static void
swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
{
/*
/*
* Ran out of IOMMU space for this operation. This is very bad.
* Unfortunately the drivers cannot handle this operation properly.
* unless they check for pci_dma_mapping_error (most don't)
* When the mapping is small enough return a static buffer to limit
* the damage, or panic when the transfer is too big.
*/
printk(KERN_ERR
"PCI-DMA: Out of SW-IOMMU space for %lu bytes at device %s\n",
size, dev ? dev->bus_id : "?");
* the damage, or panic when the transfer is too big.
*/
printk(KERN_ERR "PCI-DMA: Out of SW-IOMMU space for %lu bytes at "
"device %s\n", size, dev ? dev->bus_id : "?");
if (size > io_tlb_overflow && do_panic) {
if (dir == PCI_DMA_FROMDEVICE || dir == PCI_DMA_BIDIRECTIONAL)
panic("PCI-DMA: Memory would be corrupted\n");
if (dir == PCI_DMA_TODEVICE || dir == PCI_DMA_BIDIRECTIONAL)
panic("PCI-DMA: Random memory would be DMAed\n");
}
}
if (dir == PCI_DMA_TODEVICE || dir == PCI_DMA_BIDIRECTIONAL)
panic("PCI-DMA: Random memory would be DMAed\n");
}
}
/*
* Map a single buffer of the indicated size for DMA in streaming mode. The PCI address
* to use is returned.
* Map a single buffer of the indicated size for DMA in streaming mode. The
* PCI address to use is returned.
*
* Once the device is given the dma address, the device owns this memory until either
* swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
* Once the device is given the dma address, the device owns this memory until
* either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
*/
dma_addr_t
swiotlb_map_single (struct device *hwdev, void *ptr, size_t size, int dir)
swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
{
unsigned long dev_addr = virt_to_phys(ptr);
void *map;
void *map;
if (dir == DMA_NONE)
BUG();
/*
* Check if the PCI device can DMA to ptr... if so, just return ptr
* If the pointer passed in happens to be in the device's DMA window,
* we can safely return the device addr and not worry about bounce
* buffering it.
*/
if (!address_needs_mapping(hwdev, dev_addr) && !swiotlb_force)
/*
* Device is bit capable of DMA'ing to the buffer... just return the PCI
* address of ptr
*/
if (!address_needs_mapping(hwdev, dev_addr) && !swiotlb_force)
return dev_addr;
/*
* get a bounce buffer:
* Oh well, have to allocate and map a bounce buffer.
*/
map = map_single(hwdev, ptr, size, dir);
if (!map) {
swiotlb_full(hwdev, size, dir, 1);
map = io_tlb_overflow_buffer;
if (!map) {
swiotlb_full(hwdev, size, dir, 1);
map = io_tlb_overflow_buffer;
}
dev_addr = virt_to_phys(map);
/*
* Ensure that the address returned is DMA'ble:
* Ensure that the address returned is DMA'ble
*/
if (address_needs_mapping(hwdev, dev_addr))
panic("map_single: bounce buffer is not DMA'ble");
......@@ -407,7 +438,7 @@ swiotlb_map_single (struct device *hwdev, void *ptr, size_t size, int dir)
* flush them when they get mapped into an executable vm-area.
*/
static void
mark_clean (void *addr, size_t size)
mark_clean(void *addr, size_t size)
{
unsigned long pg_addr, end;
......@@ -421,15 +452,16 @@ mark_clean (void *addr, size_t size)
}
/*
* Unmap a single streaming mode DMA translation. The dma_addr and size must match what
* was provided for in a previous swiotlb_map_single call. All other usages are
* undefined.
* Unmap a single streaming mode DMA translation. The dma_addr and size must
* match what was provided for in a previous swiotlb_map_single call. All
* other usages are undefined.
*
* After this call, reads by the cpu to the buffer are guaranteed to see whatever the
* device wrote there.
* After this call, reads by the cpu to the buffer are guaranteed to see
* whatever the device wrote there.
*/
void
swiotlb_unmap_single (struct device *hwdev, dma_addr_t dev_addr, size_t size, int dir)
swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
int dir)
{
char *dma_addr = phys_to_virt(dev_addr);
......@@ -442,16 +474,18 @@ swiotlb_unmap_single (struct device *hwdev, dma_addr_t dev_addr, size_t size, in
}
/*
* Make physical memory consistent for a single streaming mode DMA translation after a
* transfer.
* Make physical memory consistent for a single streaming mode DMA translation
* after a transfer.
*
* If you perform a swiotlb_map_single() but wish to interrogate the buffer using the cpu,
* yet do not wish to teardown the PCI dma mapping, you must call this function before
* doing so. At the next point you give the PCI dma address back to the card, you must
* first perform a swiotlb_dma_sync_for_device, and then the device again owns the buffer
* If you perform a swiotlb_map_single() but wish to interrogate the buffer
* using the cpu, yet do not wish to teardown the PCI dma mapping, you must
* call this function before doing so. At the next point you give the PCI dma
* address back to the card, you must first perform a
* swiotlb_dma_sync_for_device, and then the device again owns the buffer
*/
void
swiotlb_sync_single_for_cpu (struct device *hwdev, dma_addr_t dev_addr, size_t size, int dir)
swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir)
{
char *dma_addr = phys_to_virt(dev_addr);
......@@ -464,7 +498,8 @@ swiotlb_sync_single_for_cpu (struct device *hwdev, dma_addr_t dev_addr, size_t s
}
void
swiotlb_sync_single_for_device (struct device *hwdev, dma_addr_t dev_addr, size_t size, int dir)
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir)
{
char *dma_addr = phys_to_virt(dev_addr);
......@@ -477,10 +512,11 @@ swiotlb_sync_single_for_device (struct device *hwdev, dma_addr_t dev_addr, size_
}
/*
* Map a set of buffers described by scatterlist in streaming mode for DMA. This is the
* scatter-gather version of the above swiotlb_map_single interface. Here the scatter
* gather list elements are each tagged with the appropriate dma address and length. They
* are obtained via sg_dma_{address,length}(SG).
* Map a set of buffers described by scatterlist in streaming mode for DMA.
* This is the scatter-gather version of the above swiotlb_map_single
* interface. Here the scatter gather list elements are each tagged with the
* appropriate dma address and length. They are obtained via
* sg_dma_{address,length}(SG).
*
* NOTE: An implementation may be able to use a smaller number of
* DMA address/length pairs than there are SG table elements.
......@@ -488,10 +524,12 @@ swiotlb_sync_single_for_device (struct device *hwdev, dma_addr_t dev_addr, size_
* The routine returns the number of addr/length pairs actually
* used, at most nents.
*
* Device ownership issues as mentioned above for swiotlb_map_single are the same here.
* Device ownership issues as mentioned above for swiotlb_map_single are the
* same here.
*/
int
swiotlb_map_sg (struct device *hwdev, struct scatterlist *sg, int nelems, int dir)
swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
int dir)
{
void *addr;
unsigned long dev_addr;
......@@ -506,9 +544,9 @@ swiotlb_map_sg (struct device *hwdev, struct scatterlist *sg, int nelems, int di
if (swiotlb_force || address_needs_mapping(hwdev, dev_addr)) {
sg->dma_address = (dma_addr_t) virt_to_phys(map_single(hwdev, addr, sg->length, dir));
if (!sg->dma_address) {
/* Don't panic here, we expect pci_map_sg users
/* Don't panic here, we expect map_sg users
to do proper error handling. */
swiotlb_full(hwdev, sg->length, dir, 0);
swiotlb_full(hwdev, sg->length, dir, 0);
swiotlb_unmap_sg(hwdev, sg - i, i, dir);
sg[0].dma_length = 0;
return 0;
......@@ -521,11 +559,12 @@ swiotlb_map_sg (struct device *hwdev, struct scatterlist *sg, int nelems, int di
}
/*
* Unmap a set of streaming mode DMA translations. Again, cpu read rules concerning calls
* here are the same as for swiotlb_unmap_single() above.
* Unmap a set of streaming mode DMA translations. Again, cpu read rules
* concerning calls here are the same as for swiotlb_unmap_single() above.
*/
void
swiotlb_unmap_sg (struct device *hwdev, struct scatterlist *sg, int nelems, int dir)
swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
int dir)
{
int i;
......@@ -540,14 +579,15 @@ swiotlb_unmap_sg (struct device *hwdev, struct scatterlist *sg, int nelems, int
}
/*
* Make physical memory consistent for a set of streaming mode DMA translations after a
* transfer.
* Make physical memory consistent for a set of streaming mode DMA translations
* after a transfer.
*
* The same as swiotlb_sync_single_* but for a scatter-gather list, same rules and
* usage.
* The same as swiotlb_sync_single_* but for a scatter-gather list, same rules
* and usage.
*/
void
swiotlb_sync_sg_for_cpu (struct device *hwdev, struct scatterlist *sg, int nelems, int dir)
swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
int nelems, int dir)
{
int i;
......@@ -556,11 +596,13 @@ swiotlb_sync_sg_for_cpu (struct device *hwdev, struct scatterlist *sg, int nelem
for (i = 0; i < nelems; i++, sg++)
if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
sync_single(hwdev, (void *) sg->dma_address, sg->dma_length, dir);
sync_single(hwdev, (void *) sg->dma_address,
sg->dma_length, dir);
}
void
swiotlb_sync_sg_for_device (struct device *hwdev, struct scatterlist *sg, int nelems, int dir)
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
int nelems, int dir)
{
int i;
......@@ -569,24 +611,26 @@ swiotlb_sync_sg_for_device (struct device *hwdev, struct scatterlist *sg, int ne
for (i = 0; i < nelems; i++, sg++)
if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
sync_single(hwdev, (void *) sg->dma_address, sg->dma_length, dir);
sync_single(hwdev, (void *) sg->dma_address,
sg->dma_length, dir);
}
int
swiotlb_dma_mapping_error (dma_addr_t dma_addr)
swiotlb_dma_mapping_error(dma_addr_t dma_addr)
{
return (dma_addr == virt_to_phys(io_tlb_overflow_buffer));
}
/*
* Return whether the given PCI device DMA address mask can be supported properly. For
* example, if your device can only drive the low 24-bits during PCI bus mastering, then
* you would pass 0x00ffffff as the mask to this function.
* Return whether the given PCI device DMA address mask can be supported
* properly. For example, if your device can only drive the low 24-bits
* during PCI bus mastering, then you would pass 0x00ffffff as the mask to
* this function.
*/
int
swiotlb_dma_supported (struct device *hwdev, u64 mask)
{
return 1;
return (virt_to_phys (io_tlb_end) - 1) <= mask;
}
EXPORT_SYMBOL(swiotlb_init);
......
arch/ia64/mm/contig.c
View file @ 6da2b234
......@@ -214,8 +214,8 @@ count_dma_pages (u64 start, u64 end, void *arg)
{
unsigned long *count = arg;
if (end <= MAX_DMA_ADDRESS)
*count += (end - start) >> PAGE_SHIFT;
if (start < MAX_DMA_ADDRESS)
*count += (min(end, MAX_DMA_ADDRESS) - start) >> PAGE_SHIFT;
return 0;
}
#endif
......
include/asm-ia64/io.h
View file @ 6da2b234
......@@ -447,14 +447,9 @@ iounmap (volatile void __iomem *addr)
/*
* String version of IO memory access ops:
*/
extern void __ia64_memcpy_fromio (void *, volatile void __iomem *, long);
extern void __ia64_memcpy_toio (volatile void __iomem *, void *, long);
extern void __ia64_memset_c_io (volatile void __iomem *, unsigned long, long);
#define memcpy_fromio(to,from,len) __ia64_memcpy_fromio((to), (from),(len))
#define memcpy_toio(to,from,len) __ia64_memcpy_toio((to),(from),(len))
#define memset_io(addr,c,len) __ia64_memset_c_io((addr), 0x0101010101010101UL*(u8)(c), \
(len))
extern void memcpy_fromio(void *dst, const volatile void __iomem *src, long n);
extern void memcpy_toio(volatile void __iomem *dst, const void *src, long n);
extern void memset_io(volatile void __iomem *s, int c, long n);
#define dma_cache_inv(_start,_size) do { } while (0)
#define dma_cache_wback(_start,_size) do { } while (0)
......
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