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Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

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This commit is contained in:
David Woodhouse 2005-05-05 13:59:37 +01:00
commit bfd4bda097
225 changed files with 9902 additions and 3277 deletions
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40
Documentation/aoe/aoe.txt
View File

@ -4,6 +4,16 @@ The EtherDrive (R) HOWTO for users of 2.6 kernels is found at ...
It has many tips and hints!
The aoetools are userland programs that are designed to work with this
driver. The aoetools are on sourceforge.
http://aoetools.sourceforge.net/
The scripts in this Documentation/aoe directory are intended to
document the use of the driver and are not necessary if you install
the aoetools.
CREATING DEVICE NODES
Users of udev should find the block device nodes created
@ -35,14 +45,15 @@ USING DEVICE NODES
"echo eth2 eth4 > /dev/etherd/interfaces" tells the aoe driver to
limit ATA over Ethernet traffic to eth2 and eth4. AoE traffic from
untrusted networks should be ignored as a matter of security.
untrusted networks should be ignored as a matter of security. See
also the aoe_iflist driver option described below.
"echo > /dev/etherd/discover" tells the driver to find out what AoE
devices are available.
These character devices may disappear and be replaced by sysfs
counterparts, so distribution maintainers are encouraged to create
scripts that use these devices.
counterparts. Using the commands in aoetools insulates users from
these implementation details.
The block devices are named like this:
@ -66,7 +77,8 @@ USING SYSFS
through which we are communicating with the remote AoE device.
There is a script in this directory that formats this information
in a convenient way.
in a convenient way. Users with aoetools can use the aoe-stat
command.
root@makki root# sh Documentation/aoe/status.sh
e10.0 eth3 up
@ -89,3 +101,23 @@ USING SYSFS
e4.7 eth1 up
e4.8 eth1 up
e4.9 eth1 up
Use /sys/module/aoe/parameters/aoe_iflist (or better, the driver
option discussed below) instead of /dev/etherd/interfaces to limit
AoE traffic to the network interfaces in the given
whitespace-separated list. Unlike the old character device, the
sysfs entry can be read from as well as written to.
It's helpful to trigger discovery after setting the list of allowed
interfaces. The aoetools package provides an aoe-discover script
for this purpose. You can also directly use the
/dev/etherd/discover special file described above.
DRIVER OPTIONS
There is a boot option for the built-in aoe driver and a
corresponding module parameter, aoe_iflist. Without this option,
all network interfaces may be used for ATA over Ethernet. Here is a
usage example for the module parameter.
modprobe aoe_iflist="eth1 eth3"

4
Documentation/aoe/status.sh
View File

@ -14,10 +14,6 @@ test ! -d "$sysd/block" && {
echo "$me Error: sysfs is not mounted" 1>&2
exit 1
}
test -z "`lsmod | grep '^aoe'`" && {
echo "$me Error: aoe module is not loaded" 1>&2
exit 1
}
for d in `ls -d $sysd/block/etherd* 2>/dev/null | grep -v p` end; do
# maybe ls comes up empty, so we use "end"

1
Documentation/pci.txt
View File

@ -279,6 +279,7 @@ pci_for_each_dev_reverse() Superseded by pci_find_device_reverse()
pci_for_each_bus() Superseded by pci_find_next_bus()
pci_find_device() Superseded by pci_get_device()
pci_find_subsys() Superseded by pci_get_subsys()
pci_find_slot() Superseded by pci_get_slot()
pcibios_find_class() Superseded by pci_get_class()
pci_find_class() Superseded by pci_get_class()
pci_(read|write)_*_nodev() Superseded by pci_bus_(read|write)_*()

35
Documentation/power/pci.txt
View File

@ -165,40 +165,9 @@ Description:
These functions are intended for use by individual drivers, and are defined in
struct pci_driver:
int (*save_state) (struct pci_dev *dev, u32 state);
int (*suspend) (struct pci_dev *dev, u32 state);
int (*suspend) (struct pci_dev *dev, pm_message_t state);
int (*resume) (struct pci_dev *dev);
int (*enable_wake) (struct pci_dev *dev, u32 state, int enable);
save_state
----------
Usage:
if (dev->driver && dev->driver->save_state)
dev->driver->save_state(dev,state);
The driver should use this callback to save device state. It should take into
account the current state of the device and the requested state in order to
avoid any unnecessary operations.
For example, a video card that supports all 4 states (D0-D3), all controller
context is preserved when entering D1, but the screen is placed into a low power
state (blanked).
The driver can also interpret this function as a notification that it may be
entering a sleep state in the near future. If it knows that the device cannot
enter the requested state, either because of lack of support for it, or because
the device is middle of some critical operation, then it should fail.
This function should not be used to set any state in the device or the driver
because the device may not actually enter the sleep state (e.g. another driver
later causes causes a global state transition to fail).
Note that in intermediate low power states, a device's I/O and memory spaces may
be disabled and may not be available in subsequent transitions to lower power
states.
int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable);
suspend

4
arch/alpha/Kconfig
View File

@ -280,6 +280,10 @@ config ISA
(MCA) or VESA. ISA is an older system, now being displaced by PCI;
newer boards don't support it. If you have ISA, say Y, otherwise N.
config ISA_DMA_API
bool
default y
config PCI
bool
depends on !ALPHA_JENSEN

4
arch/arm/Kconfig
View File

@ -266,6 +266,10 @@ config ISA_DMA
depends on FOOTBRIDGE_HOST || ARCH_SHARK
default y
config ISA_DMA_API
bool
default y
config PCI
bool "PCI support" if ARCH_INTEGRATOR_AP
default y if ARCH_SHARK || FOOTBRIDGE_HOST || ARCH_IOP3XX || ARCH_IXP4XX || ARCH_IXP2000

107
arch/arm/boot/compressed/head.S
View File

@ -18,48 +18,30 @@
* Please select one of the following when turning on debugging.
*/
#ifdef DEBUG
#if defined(CONFIG_DEBUG_DC21285_PORT)
.macro loadsp, rb
mov \rb, #0x42000000
.endm
.macro writeb, rb
str \rb, [r3, #0x160]
.endm
#elif defined(CONFIG_DEBUG_ICEDCC)
#include <asm/arch/debug-macro.S>
#if defined(CONFIG_DEBUG_ICEDCC)
.macro loadsp, rb
.endm
.macro writeb, rb
mcr p14, 0, \rb, c0, c1, 0
.macro writeb, ch, rb
mcr p14, 0, \ch, c0, c1, 0
.endm
#elif defined(CONFIG_FOOTBRIDGE)
#else
.macro writeb, ch, rb
senduart \ch, \rb
.endm
#if defined(CONFIG_FOOTBRIDGE) || \
defined(CONFIG_ARCH_RPC) || \
defined(CONFIG_ARCH_INTEGRATOR) || \
defined(CONFIG_ARCH_PXA) || \
defined(CONFIG_ARCH_IXP4XX) || \
defined(CONFIG_ARCH_IXP2000) || \
defined(CONFIG_ARCH_LH7A40X) || \
defined(CONFIG_ARCH_OMAP)
.macro loadsp, rb
mov \rb, #0x7c000000
.endm
.macro writeb, rb
strb \rb, [r3, #0x3f8]
.endm
#elif defined(CONFIG_ARCH_RPC)
.macro loadsp, rb
mov \rb, #0x03000000
orr \rb, \rb, #0x00010000
.endm
.macro writeb, rb
strb \rb, [r3, #0x3f8 << 2]
.endm
#elif defined(CONFIG_ARCH_INTEGRATOR)
.macro loadsp, rb
mov \rb, #0x16000000
.endm
.macro writeb, rb
strb \rb, [r3, #0]
.endm
#elif defined(CONFIG_ARCH_PXA) /* Xscale-type */
.macro loadsp, rb
mov \rb, #0x40000000
orr \rb, \rb, #0x00100000
.endm
.macro writeb, rb
strb \rb, [r3, #0]
addruart \rb
.endm
#elif defined(CONFIG_ARCH_SA1100)
.macro loadsp, rb
@ -70,64 +52,21 @@
add \rb, \rb, #0x00010000 @ Ser1
# endif
.endm
.macro writeb, rb
str \rb, [r3, #0x14] @ UTDR
.endm
#elif defined(CONFIG_ARCH_IXP4XX)
.macro loadsp, rb
mov \rb, #0xc8000000
.endm
.macro writeb, rb
str \rb, [r3, #0]
#elif defined(CONFIG_ARCH_IXP2000)
.macro loadsp, rb
mov \rb, #0xc0000000
orr \rb, \rb, #0x00030000
.endm
.macro writeb, rb
str \rb, [r3, #0]
.endm
#elif defined(CONFIG_ARCH_LH7A40X)
.macro loadsp, rb
ldr \rb, =0x80000700 @ UART2 UARTBASE
.endm
.macro writeb, rb
strb \rb, [r3, #0]
.endm
#elif defined(CONFIG_ARCH_OMAP)
.macro loadsp, rb
mov \rb, #0xff000000 @ physical base address
add \rb, \rb, #0x00fb0000
#if defined(CONFIG_OMAP_LL_DEBUG_UART2) || defined(CONFIG_OMAP_LL_DEBUG_UART3)
add \rb, \rb, #0x00000800
#endif
#ifdef CONFIG_OMAP_LL_DEBUG_UART3
add \rb, \rb, #0x00009000
#endif
.endm
.macro writeb, rb
strb \rb, [r3]
.endm
#elif defined(CONFIG_ARCH_IOP331)
.macro loadsp, rb
mov \rb, #0xff000000
orr \rb, \rb, #0x00ff0000
orr \rb, \rb, #0x0000f700 @ location of the UART
.endm
.macro writeb, rb
str \rb, [r3, #0]
.endm
#elif defined(CONFIG_ARCH_S3C2410)
.macro loadsp, rb
.macro loadsp, rb
mov \rb, #0x50000000
add \rb, \rb, #0x4000 * CONFIG_S3C2410_LOWLEVEL_UART_PORT
.endm
.macro writeb, rb
strb \rb, [r3, #0x20]
.endm
#else
#error no serial architecture defined
#endif
#endif
#endif
.macro kputc,val
@ -734,7 +673,7 @@ puts: loadsp r3
1: ldrb r2, [r0], #1
teq r2, #0
moveq pc, lr
2: writeb r2
2: writeb r2, r3
mov r1, #0x00020000
3: subs r1, r1, #1
bne 3b

16
arch/arm/mach-imx/generic.c
View File

@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/arch/imxfb.h>
#include <asm/hardware.h>
#include <asm/mach/map.h>
@ -228,6 +229,14 @@ static struct platform_device imx_uart2_device = {
.resource = imx_uart2_resources,
};
static struct imxfb_mach_info imx_fb_info;
void __init set_imx_fb_info(struct imxfb_mach_info *hard_imx_fb_info)
{
memcpy(&imx_fb_info,hard_imx_fb_info,sizeof(struct imxfb_mach_info));
}
EXPORT_SYMBOL(set_imx_fb_info);
static struct resource imxfb_resources[] = {
[0] = {
.start = 0x00205000,
@ -241,9 +250,16 @@ static struct resource imxfb_resources[] = {
},
};
static u64 fb_dma_mask = ~(u64)0;
static struct platform_device imxfb_device = {
.name = "imx-fb",
.id = 0,
.dev = {
.platform_data = &imx_fb_info,
.dma_mask = &fb_dma_mask,
.coherent_dma_mask = 0xffffffff,
},
.num_resources = ARRAY_SIZE(imxfb_resources),
.resource = imxfb_resources,
};

6
arch/arm/mach-integrator/core.c
View File

@ -216,7 +216,9 @@ integrator_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
write_seqlock(&xtime_lock);
// ...clear the interrupt
/*
* clear the interrupt
*/
timer1->TimerClear = 1;
timer_tick(regs);
@ -264,7 +266,7 @@ void __init integrator_time_init(unsigned long reload, unsigned int ctrl)
timer1->TimerValue = timer_reload;
timer1->TimerControl = timer_ctrl;
/*
/*
* Make irqs happen for the system timer
*/
setup_irq(IRQ_TIMERINT1, &integrator_timer_irq);

2
arch/arm/mach-integrator/leds.c
View File

@ -37,7 +37,7 @@ static void integrator_leds_event(led_event_t ledevt)
unsigned long flags;
const unsigned int dbg_base = IO_ADDRESS(INTEGRATOR_DBG_BASE);
unsigned int update_alpha_leds;
// yup, change the LEDs
local_irq_save(flags);
update_alpha_leds = 0;

10
arch/arm/mach-ixp4xx/common-pci.c
View File

@ -501,15 +501,6 @@ pci_set_dma_mask(struct pci_dev *dev, u64 mask)
return -EIO;
}
int
pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask)
{
if (mask >= SZ_64M - 1 )
return 0;
return -EIO;
}
int
pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
@ -520,7 +511,6 @@ pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
}
EXPORT_SYMBOL(pci_set_dma_mask);
EXPORT_SYMBOL(pci_dac_set_dma_mask);
EXPORT_SYMBOL(pci_set_consistent_dma_mask);
EXPORT_SYMBOL(ixp4xx_pci_read);
EXPORT_SYMBOL(ixp4xx_pci_write);

1
arch/arm/mm/Kconfig
View File

@ -413,6 +413,7 @@ config CPU_BPREDICT_DISABLE
config HAS_TLS_REG
bool
depends on CPU_32v6 && !CPU_32v5 && !CPU_32v4 && !CPU_32v3
default y
help
This selects support for the CP15 thread register.
It is defined to be available on ARMv6 or later. However

4
arch/arm26/Kconfig
View File

@ -89,6 +89,10 @@ config PAGESIZE_16
machine with 4MB of memory.
endmenu
config ISA_DMA_API
bool
default y
menu "General setup"
# Compressed boot loader in ROM. Yes, we really want to ask about

4
arch/i386/Kconfig
View File

@ -1173,6 +1173,10 @@ source "drivers/pci/pcie/Kconfig"
source "drivers/pci/Kconfig"
config ISA_DMA_API
bool
default y
config ISA
bool "ISA support"
depends on !(X86_VOYAGER || X86_VISWS)

19
arch/ia64/Kconfig
View File

@ -217,6 +217,16 @@ config IA64_SGI_SN_SIM
If you are compiling a kernel that will run under SGI's IA-64
simulator (Medusa) then say Y, otherwise say N.
config IA64_SGI_SN_XP
tristate "Support communication between SGI SSIs"
depends on MSPEC
help
An SGI machine can be divided into multiple Single System
Images which act independently of each other and have
hardware based memory protection from the others. Enabling
this feature will allow for direct communication between SSIs
based on a network adapter and DMA messaging.
config FORCE_MAX_ZONEORDER
int
default "18"
@ -261,6 +271,15 @@ config HOTPLUG_CPU
can be controlled through /sys/devices/system/cpu/cpu#.
Say N if you want to disable CPU hotplug.
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
default off
help
Improves the CPU scheduler's decision making when dealing with
Intel IA64 chips with MultiThreading at a cost of slightly increased
overhead in some places. If unsure say N here.
config PREEMPT
bool "Preemptible Kernel"
help

96
arch/ia64/configs/tiger_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.11-rc2
# Sat Jan 22 11:17:02 2005
# Linux kernel version: 2.6.12-rc3
# Tue May 3 15:55:04 2005
#
#
@ -10,6 +10,7 @@
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -21,24 +22,27 @@ CONFIG_POSIX_MQUEUE=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
# CONFIG_AUDIT is not set
CONFIG_LOG_BUF_SHIFT=20
CONFIG_HOTPLUG=y
CONFIG_KOBJECT_UEVENT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# CONFIG_CPUSETS is not set
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=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
CONFIG_BASE_SMALL=0
#
# Loadable module support
@ -85,6 +89,7 @@ CONFIG_FORCE_MAX_ZONEORDER=18
CONFIG_SMP=y
CONFIG_NR_CPUS=4
CONFIG_HOTPLUG_CPU=y
# CONFIG_SCHED_SMT is not set
# CONFIG_PREEMPT is not set
CONFIG_HAVE_DEC_LOCK=y
CONFIG_IA32_SUPPORT=y
@ -135,6 +140,7 @@ CONFIG_PCI_DOMAINS=y
# CONFIG_PCI_MSI is not set
CONFIG_PCI_LEGACY_PROC=y
CONFIG_PCI_NAMES=y
# CONFIG_PCI_DEBUG is not set
#
# PCI Hotplug Support
@ -151,10 +157,6 @@ CONFIG_HOTPLUG_PCI_ACPI=m
#
# CONFIG_PCCARD is not set
#
# PC-card bridges
#
#
# Device Drivers
#
@ -195,9 +197,10 @@ CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=m
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
@ -313,7 +316,6 @@ CONFIG_SCSI_FC_ATTRS=y
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_EATA_PIO is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
# CONFIG_SCSI_IPS is not set
@ -325,7 +327,6 @@ CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
# CONFIG_SCSI_SYM53C8XX_IOMAPPED is not set
# CONFIG_SCSI_IPR is not set
# CONFIG_SCSI_QLOGIC_ISP is not set
CONFIG_SCSI_QLOGIC_FC=y
# CONFIG_SCSI_QLOGIC_FC_FIRMWARE is not set
CONFIG_SCSI_QLOGIC_1280=y
@ -336,6 +337,7 @@ CONFIG_SCSI_QLA22XX=m
CONFIG_SCSI_QLA2300=m
CONFIG_SCSI_QLA2322=m
# CONFIG_SCSI_QLA6312 is not set
# CONFIG_SCSI_LPFC is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_DC390T is not set
# CONFIG_SCSI_DEBUG is not set
@ -358,6 +360,7 @@ CONFIG_DM_CRYPT=m
CONFIG_DM_SNAPSHOT=m
CONFIG_DM_MIRROR=m
CONFIG_DM_ZERO=m
# CONFIG_DM_MULTIPATH is not set
#
# Fusion MPT device support
@ -386,7 +389,6 @@ CONFIG_NET=y
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_NETLINK_DEV=y
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
@ -446,7 +448,6 @@ CONFIG_DUMMY=m
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_ETHERTAP is not set
#
# ARCnet devices
@ -484,7 +485,6 @@ CONFIG_NET_PCI=y
# CONFIG_DGRS is not set
CONFIG_EEPRO100=m
CONFIG_E100=m
# CONFIG_E100_NAPI is not set
# CONFIG_FEALNX is not set
# CONFIG_NATSEMI is not set
# CONFIG_NE2K_PCI is not set
@ -565,25 +565,6 @@ CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_EVDEV is not set
# CONFIG_INPUT_EVBUG is not set
#
# Input I/O drivers
#
CONFIG_GAMEPORT=m
CONFIG_SOUND_GAMEPORT=m
# CONFIG_GAMEPORT_NS558 is not set
# CONFIG_GAMEPORT_L4 is not set
# CONFIG_GAMEPORT_EMU10K1 is not set
# CONFIG_GAMEPORT_VORTEX is not set
# CONFIG_GAMEPORT_FM801 is not set
# CONFIG_GAMEPORT_CS461X is not set
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
#
# Input Device Drivers
#
@ -601,6 +582,24 @@ CONFIG_MOUSE_PS2=y
# 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_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
CONFIG_GAMEPORT=m
# CONFIG_GAMEPORT_NS558 is not set
# CONFIG_GAMEPORT_L4 is not set
# CONFIG_GAMEPORT_EMU10K1 is not set
# CONFIG_GAMEPORT_VORTEX is not set
# CONFIG_GAMEPORT_FM801 is not set
# CONFIG_GAMEPORT_CS461X is not set
CONFIG_SOUND_GAMEPORT=m
#
# Character devices
#
@ -615,6 +614,8 @@ CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_SYNCLINK is not set
# CONFIG_SYNCLINKMP is not set
# CONFIG_N_HDLC is not set
# CONFIG_SPECIALIX is not set
# CONFIG_SX is not set
# CONFIG_STALDRV is not set
#
@ -635,6 +636,7 @@ CONFIG_SERIAL_8250_SHARE_IRQ=y
#
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
@ -670,6 +672,12 @@ CONFIG_HPET=y
# CONFIG_HPET_RTC_IRQ is not set
CONFIG_HPET_MMAP=y
CONFIG_MAX_RAW_DEVS=256
# CONFIG_HANGCHECK_TIMER is not set
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support
@ -705,7 +713,6 @@ CONFIG_MAX_RAW_DEVS=256
#
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
#
# Sound
@ -715,6 +722,8 @@ CONFIG_DUMMY_CONSOLE=y
#
# USB support
#
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
@ -726,8 +735,6 @@ CONFIG_USB_DEVICEFS=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
@ -736,6 +743,8 @@ CONFIG_USB_EHCI_HCD=m
# CONFIG_USB_EHCI_SPLIT_ISO is not set
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
CONFIG_USB_OHCI_HCD=m
# CONFIG_USB_OHCI_BIG_ENDIAN is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=y
# CONFIG_USB_SL811_HCD is not set
@ -751,12 +760,11 @@ CONFIG_USB_UHCI_HCD=y
#
CONFIG_USB_STORAGE=m
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_RW_DETECT is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_DPCM is not set
# CONFIG_USB_STORAGE_HP8200e is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
@ -800,6 +808,7 @@ CONFIG_USB_HIDINPUT=y
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
# CONFIG_USB_MON is not set
#
# USB port drivers
@ -824,6 +833,7 @@ CONFIG_USB_HIDINPUT=y
# CONFIG_USB_PHIDGETKIT is not set
# CONFIG_USB_PHIDGETSERVO is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_TEST is not set
#
@ -867,7 +877,12 @@ CONFIG_REISERFS_FS_POSIX_ACL=y
CONFIG_REISERFS_FS_SECURITY=y
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
#
# XFS support
#
CONFIG_XFS_FS=y
CONFIG_XFS_EXPORT=y
# CONFIG_XFS_RT is not set
# CONFIG_XFS_QUOTA is not set
# CONFIG_XFS_SECURITY is not set
@ -945,7 +960,7 @@ CONFIG_NFSD_V4=y
CONFIG_NFSD_TCP=y
CONFIG_LOCKD=m
CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=m
CONFIG_EXPORTFS=y
CONFIG_SUNRPC=m
CONFIG_SUNRPC_GSS=m
CONFIG_RPCSEC_GSS_KRB5=m
@ -1042,8 +1057,10 @@ CONFIG_GENERIC_IRQ_PROBE=y
#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_LOG_BUF_SHIFT=20
# CONFIG_SCHEDSTATS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_SPINLOCK is not set
@ -1077,6 +1094,7 @@ CONFIG_CRYPTO_MD5=m
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_WP512 is not set
# CONFIG_CRYPTO_TGR192 is not set
CONFIG_CRYPTO_DES=m
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_TWOFISH is not set

34
arch/ia64/hp/common/sba_iommu.c
View File

@ -1944,43 +1944,17 @@ sba_connect_bus(struct pci_bus *bus)
static void __init
sba_map_ioc_to_node(struct ioc *ioc, acpi_handle handle)
{
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
union acpi_object *obj;
acpi_handle phandle;
unsigned int node;
int pxm;
ioc->node = MAX_NUMNODES;
/*
* Check for a _PXM on this node first. We don't typically see
* one here, so we'll end up getting it from the parent.
*/
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer))) {
if (ACPI_FAILURE(acpi_get_parent(handle, &phandle)))
return;
pxm = acpi_get_pxm(handle);
/* Reset the acpi buffer */
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
if (ACPI_FAILURE(acpi_evaluate_object(phandle, "_PXM", NULL,
&buffer)))
return;
}
if (!buffer.length || !buffer.pointer)
if (pxm < 0)
return;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_INTEGER ||
obj->integer.value >= MAX_PXM_DOMAINS) {
acpi_os_free(buffer.pointer);
return;
}
node = pxm_to_nid_map[obj->integer.value];
acpi_os_free(buffer.pointer);
node = pxm_to_nid_map[pxm];
if (node >= MAX_NUMNODES || !node_online(node))
return;

23
arch/ia64/kernel/acpi.c
View File

@ -779,7 +779,7 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
union acpi_object *obj;
struct acpi_table_iosapic *iosapic;
unsigned int gsi_base;
int node;
int pxm, node;
/* Only care about objects w/ a method that returns the MADT */
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
@ -805,29 +805,16 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
gsi_base = iosapic->global_irq_base;
acpi_os_free(buffer.pointer);
buffer.length = ACPI_ALLOCATE_BUFFER;
buffer.pointer = NULL;
/*
* OK, it's an IOSAPIC MADT entry, look for a _PXM method to tell
* OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
* us which node to associate this with.
*/
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer)))
pxm = acpi_get_pxm(handle);
if (pxm < 0)
return AE_OK;
if (!buffer.length || !buffer.pointer)
return AE_OK;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_INTEGER ||
obj->integer.value >= MAX_PXM_DOMAINS) {
acpi_os_free(buffer.pointer);
return AE_OK;
}
node = pxm_to_nid_map[obj->integer.value];
acpi_os_free(buffer.pointer);
node = pxm_to_nid_map[pxm];
if (node >= MAX_NUMNODES || !node_online(node) ||
cpus_empty(node_to_cpumask(node)))

2
arch/ia64/kernel/entry.S
View File

@ -782,7 +782,7 @@ GLOBAL_ENTRY(ia64_ret_from_ia32_execve)
st8.spill [r2]=r8 // store return value in slot for r8 and set unat bit
.mem.offset 8,0
st8.spill [r3]=r0 // clear error indication in slot for r10 and set unat bit
END(ia64_ret_from_ia32_execve_syscall)
END(ia64_ret_from_ia32_execve)
// fall through
#endif /* CONFIG_IA32_SUPPORT */
GLOBAL_ENTRY(ia64_leave_kernel)

4
arch/ia64/kernel/mca_drv.c
View File

@ -132,8 +132,7 @@ mca_handler_bh(unsigned long paddr)
spin_unlock(&mca_bh_lock);
/* This process is about to be killed itself */
force_sig(SIGKILL, current);
schedule();
do_exit(SIGKILL);
}
/**
@ -439,6 +438,7 @@ recover_from_read_error(slidx_table_t *slidx, peidx_table_t *peidx, pal_bus_chec
psr2 = (struct ia64_psr *)&pmsa->pmsa_ipsr;
psr2->cpl = 0;
psr2->ri = 0;
psr2->i = 0;
return 1;
}

18
arch/ia64/kernel/mca_drv_asm.S
View File

@ -10,6 +10,7 @@
#include <asm/asmmacro.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
GLOBAL_ENTRY(mca_handler_bhhook)
invala // clear RSE ?
@ -20,12 +21,21 @@ GLOBAL_ENTRY(mca_handler_bhhook)
;;
alloc r16=ar.pfs,0,2,1,0 // make a new frame
;;
mov ar.rsc=0
;;
mov r13=IA64_KR(CURRENT) // current task pointer
;;
adds r12=IA64_TASK_THREAD_KSP_OFFSET,r13
mov r2=r13
;;
ld8 r12=[r12] // stack pointer
addl r22=IA64_RBS_OFFSET,r2
;;
mov ar.bspstore=r22
;;
addl sp=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r2
;;
adds r2=IA64_TASK_THREAD_ON_USTACK_OFFSET,r13
;;
st1 [r2]=r0 // clear current->thread.on_ustack flag
mov loc0=r16
movl loc1=mca_handler_bh // recovery C function
;;
@ -34,7 +44,9 @@ GLOBAL_ENTRY(mca_handler_bhhook)
;;
mov loc1=rp
;;
br.call.sptk.many rp=b6 // not return ...
ssm psr.i
;;
br.call.sptk.many rp=b6 // does not return ...
;;
mov ar.pfs=loc0
mov rp=loc1

43
arch/ia64/kernel/perfmon.c
View File

@ -1265,6 +1265,8 @@ out:
}
EXPORT_SYMBOL(pfm_unregister_buffer_fmt);
extern void update_pal_halt_status(int);
static int
pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
{
@ -1311,6 +1313,11 @@ pfm_reserve_session(struct task_struct *task, int is_syswide, unsigned int cpu)
is_syswide,
cpu));
/*
* disable default_idle() to go to PAL_HALT
*/
update_pal_halt_status(0);
UNLOCK_PFS(flags);
return 0;
@ -1366,6 +1373,12 @@ pfm_unreserve_session(pfm_context_t *ctx, int is_syswide, unsigned int cpu)
is_syswide,
cpu));
/*
* if possible, enable default_idle() to go into PAL_HALT
*/
if (pfm_sessions.pfs_task_sessions == 0 && pfm_sessions.pfs_sys_sessions == 0)
update_pal_halt_status(1);
UNLOCK_PFS(flags);
return 0;
@ -4202,7 +4215,7 @@ pfm_context_load(pfm_context_t *ctx, void *arg, int count, struct pt_regs *regs)
DPRINT(("cannot load to [%d], invalid ctx_state=%d\n",
req->load_pid,
ctx->ctx_state));
return -EINVAL;
return -EBUSY;
}
DPRINT(("load_pid [%d] using_dbreg=%d\n", req->load_pid, ctx->ctx_fl_using_dbreg));
@ -4704,16 +4717,26 @@ recheck:
if (task == current || ctx->ctx_fl_system) return 0;
/*
* if context is UNLOADED we are safe to go
* we are monitoring another thread
*/
if (state == PFM_CTX_UNLOADED) return 0;
/*
* no command can operate on a zombie context
*/
if (state == PFM_CTX_ZOMBIE) {
DPRINT(("cmd %d state zombie cannot operate on context\n", cmd));
return -EINVAL;
switch(state) {
case PFM_CTX_UNLOADED:
/*
* if context is UNLOADED we are safe to go
*/
return 0;
case PFM_CTX_ZOMBIE:
/*
* no command can operate on a zombie context
*/
DPRINT(("cmd %d state zombie cannot operate on context\n", cmd));
return -EINVAL;
case PFM_CTX_MASKED:
/*
* PMU state has been saved to software even though
* the thread may still be running.
*/
if (cmd != PFM_UNLOAD_CONTEXT) return 0;
}
/*

55
arch/ia64/kernel/process.c
View File

@ -50,7 +50,7 @@
#include "sigframe.h"
void (*ia64_mark_idle)(int);
static cpumask_t cpu_idle_map;
static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
unsigned long boot_option_idle_override = 0;
EXPORT_SYMBOL(boot_option_idle_override);
@ -173,7 +173,9 @@ do_notify_resume_user (sigset_t *oldset, struct sigscratch *scr, long in_syscall
ia64_do_signal(oldset, scr, in_syscall);
}
static int pal_halt = 1;
static int pal_halt = 1;
static int can_do_pal_halt = 1;
static int __init nohalt_setup(char * str)
{
pal_halt = 0;
@ -181,16 +183,20 @@ static int __init nohalt_setup(char * str)
}
__setup("nohalt", nohalt_setup);
void
update_pal_halt_status(int status)
{
can_do_pal_halt = pal_halt && status;
}
/*
* We use this if we don't have any better idle routine..
*/
void
default_idle (void)
{
unsigned long pmu_active = ia64_getreg(_IA64_REG_PSR) & (IA64_PSR_PP | IA64_PSR_UP);
while (!need_resched())
if (pal_halt && !pmu_active)
if (can_do_pal_halt)
safe_halt();
else
cpu_relax();
@ -223,20 +229,31 @@ static inline void play_dead(void)
}
#endif /* CONFIG_HOTPLUG_CPU */
void cpu_idle_wait(void)
{
int cpu;
cpumask_t map;
unsigned int cpu, this_cpu = get_cpu();
cpumask_t map;
for_each_online_cpu(cpu)
cpu_set(cpu, cpu_idle_map);
set_cpus_allowed(current, cpumask_of_cpu(this_cpu));
put_cpu();
wmb();
do {
ssleep(1);
cpus_and(map, cpu_idle_map, cpu_online_map);
} while (!cpus_empty(map));
cpus_clear(map);
for_each_online_cpu(cpu) {
per_cpu(cpu_idle_state, cpu) = 1;
cpu_set(cpu, map);
}
__get_cpu_var(cpu_idle_state) = 0;
wmb();
do {
ssleep(1);
for_each_online_cpu(cpu) {
if (cpu_isset(cpu, map) && !per_cpu(cpu_idle_state, cpu))
cpu_clear(cpu, map);
}
cpus_and(map, map, cpu_online_map);
} while (!cpus_empty(map));
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);
@ -244,7 +261,6 @@ void __attribute__((noreturn))
cpu_idle (void)
{
void (*mark_idle)(int) = ia64_mark_idle;
int cpu = smp_processor_id();
/* endless idle loop with no priority at all */
while (1) {
@ -255,12 +271,13 @@ cpu_idle (void)
while (!need_resched()) {
void (*idle)(void);
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
rmb();
if (mark_idle)
(*mark_idle)(1);
if (cpu_isset(cpu, cpu_idle_map))
cpu_clear(cpu, cpu_idle_map);
rmb();
idle = pm_idle;
if (!idle)
idle = default_idle;

2
arch/ia64/kernel/signal.c
View File

@ -224,7 +224,7 @@ ia64_rt_sigreturn (struct sigscratch *scr)
* could be corrupted.
*/
retval = (long) &ia64_leave_kernel;
if (test_thread_flag(TIF_SYSCALL_TRACE)
if (test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SYSCALL_AUDIT))
/*
* strace expects to be notified after sigreturn returns even though the

6
arch/ia64/lib/flush.S
View File

@ -1,8 +1,8 @@
/*
* Cache flushing routines.
*
* Copyright (C) 1999-2001 Hewlett-Packard Co
* Copyright (C) 1999-2001 David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 1999-2001, 2005 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <asm/asmmacro.h>
#include <asm/page.h>
@ -26,7 +26,7 @@ GLOBAL_ENTRY(flush_icache_range)
mov ar.lc=r8
;;
.Loop: fc in0 // issuable on M0 only
.Loop: fc.i in0 // issuable on M2 only
add in0=32,in0
br.cloop.sptk.few .Loop
;;

2
arch/ia64/lib/memcpy_mck.S
View File

@ -75,6 +75,7 @@ GLOBAL_ENTRY(memcpy)
mov f6=f0
br.cond.sptk .common_code
;;
END(memcpy)
GLOBAL_ENTRY(__copy_user)
.prologue
// check dest alignment
@ -524,7 +525,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \
#undef B
#undef C
#undef D
END(memcpy)
/*
* Due to lack of local tag support in gcc 2.x assembler, it is not clear which

2
arch/ia64/lib/memset.S
View File

@ -57,10 +57,10 @@ GLOBAL_ENTRY(memset)
{ .mmi
.prologue
alloc tmp = ar.pfs, 3, 0, 0, 0
.body
lfetch.nt1 [dest] //
.save ar.lc, save_lc
mov.i save_lc = ar.lc
.body
} { .mmi
mov ret0 = dest // return value
cmp.ne p_nz, p_zr = value, r0 // use stf.spill if value is zero

7
arch/ia64/sn/kernel/Makefile
View File

@ -4,10 +4,15 @@
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1999,2001-2003 Silicon Graphics, Inc. All Rights Reserved.
# Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All Rights Reserved.
#
obj-y += setup.o bte.o bte_error.o irq.o mca.o idle.o \
huberror.o io_init.o iomv.o klconflib.o sn2/
obj-$(CONFIG_IA64_GENERIC) += machvec.o
obj-$(CONFIG_SGI_TIOCX) += tiocx.o
obj-$(CONFIG_IA64_SGI_SN_XP) += xp.o
xp-y := xp_main.o xp_nofault.o
obj-$(CONFIG_IA64_SGI_SN_XP) += xpc.o
xpc-y := xpc_main.o xpc_channel.o xpc_partition.o
obj-$(CONFIG_IA64_SGI_SN_XP) += xpnet.o

10
arch/ia64/sn/kernel/io_init.c
View File

@ -174,6 +174,12 @@ static void sn_fixup_ionodes(void)
if (status)
continue;
/* Attach the error interrupt handlers */
if (nasid & 1)
ice_error_init(hubdev);
else
hub_error_init(hubdev);
for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
@ -211,10 +217,6 @@ static void sn_fixup_ionodes(void)
sn_flush_device_list;
}
if (!(i & 1))
hub_error_init(hubdev);
else
ice_error_init(hubdev);
}
}

34
arch/ia64/sn/kernel/mca.c
View File

@ -37,6 +37,11 @@ static u64 *sn_oemdata_size, sn_oemdata_bufsize;
* This function is the callback routine that SAL calls to log error
* info for platform errors. buf is appended to sn_oemdata, resizing as
* required.
* Note: this is a SAL to OS callback, running under the same rules as the SAL
* code. SAL calls are run with preempt disabled so this routine must not
* sleep. vmalloc can sleep so print_hook cannot resize the output buffer
* itself, instead it must set the required size and return to let the caller
* resize the buffer then redrive the SAL call.
*/
static int print_hook(const char *fmt, ...)
{
@ -47,18 +52,8 @@ static int print_hook(const char *fmt, ...)
vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
len = strlen(buf);
while (*sn_oemdata_size + len + 1 > sn_oemdata_bufsize) {
u8 *newbuf = vmalloc(sn_oemdata_bufsize += 1000);
if (!newbuf) {
printk(KERN_ERR "%s: unable to extend sn_oemdata\n",
__FUNCTION__);
return 0;
}
memcpy(newbuf, *sn_oemdata, *sn_oemdata_size);
vfree(*sn_oemdata);
*sn_oemdata = newbuf;
}
memcpy(*sn_oemdata + *sn_oemdata_size, buf, len + 1);
if (*sn_oemdata_size + len <= sn_oemdata_bufsize)
memcpy(*sn_oemdata + *sn_oemdata_size, buf, len);
*sn_oemdata_size += len;
return 0;
}
@ -98,7 +93,20 @@ sn_platform_plat_specific_err_print(const u8 * sect_header, u8 ** oemdata,
sn_oemdata = oemdata;
sn_oemdata_size = oemdata_size;
sn_oemdata_bufsize = 0;
ia64_sn_plat_specific_err_print(print_hook, (char *)sect_header);
*sn_oemdata_size = PAGE_SIZE; /* first guess at how much data will be generated */
while (*sn_oemdata_size > sn_oemdata_bufsize) {
u8 *newbuf = vmalloc(*sn_oemdata_size);
if (!newbuf) {
printk(KERN_ERR "%s: unable to extend sn_oemdata\n",
__FUNCTION__);
return 1;
}
vfree(*sn_oemdata);
*sn_oemdata = newbuf;
sn_oemdata_bufsize = *sn_oemdata_size;
*sn_oemdata_size = 0;
ia64_sn_plat_specific_err_print(print_hook, (char *)sect_header);
}
up(&sn_oemdata_mutex);
return 0;
}

40
arch/ia64/sn/kernel/setup.c
View File

@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999,2001-2004 Silicon Graphics, Inc. All rights reserved.
* Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/config.h>
@ -73,6 +73,12 @@ EXPORT_SYMBOL(sn_rtc_cycles_per_second);
DEFINE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
EXPORT_PER_CPU_SYMBOL(__sn_hub_info);
DEFINE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
EXPORT_PER_CPU_SYMBOL(__sn_cnodeid_to_nasid);
DEFINE_PER_CPU(struct nodepda_s *, __sn_nodepda);
EXPORT_PER_CPU_SYMBOL(__sn_nodepda);
partid_t sn_partid = -1;
EXPORT_SYMBOL(sn_partid);
char sn_system_serial_number_string[128];
@ -373,11 +379,11 @@ static void __init sn_init_pdas(char **cmdline_p)
{
cnodeid_t cnode;
memset(pda->cnodeid_to_nasid_table, -1,
sizeof(pda->cnodeid_to_nasid_table));
memset(sn_cnodeid_to_nasid, -1,
sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
for_each_online_node(cnode)
pda->cnodeid_to_nasid_table[cnode] =
pxm_to_nasid(nid_to_pxm_map[cnode]);
sn_cnodeid_to_nasid[cnode] =
pxm_to_nasid(nid_to_pxm_map[cnode]);
numionodes = num_online_nodes();
scan_for_ionodes();
@ -477,7 +483,8 @@ void __init sn_cpu_init(void)
cnode = nasid_to_cnodeid(nasid);
pda->p_nodepda = nodepdaindr[cnode];
sn_nodepda = nodepdaindr[cnode];
pda->led_address =
(typeof(pda->led_address)) (LED0 + (slice << LED_CPU_SHIFT));
pda->led_state = LED_ALWAYS_SET;
@ -486,15 +493,18 @@ void __init sn_cpu_init(void)
pda->idle_flag = 0;
if (cpuid != 0) {
memcpy(pda->cnodeid_to_nasid_table,
pdacpu(0)->cnodeid_to_nasid_table,
sizeof(pda->cnodeid_to_nasid_table));
/* copy cpu 0's sn_cnodeid_to_nasid table to this cpu's */
memcpy(sn_cnodeid_to_nasid,
(&per_cpu(__sn_cnodeid_to_nasid, 0)),
sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
}
/*
* Check for WARs.
* Only needs to be done once, on BSP.
* Has to be done after loop above, because it uses pda.cnodeid_to_nasid_table[i].
* Has to be done after loop above, because it uses this cpu's
* sn_cnodeid_to_nasid table which was just initialized if this
* isn't cpu 0.
* Has to be done before assignment below.
*/
if (!wars_have_been_checked) {
@ -580,8 +590,7 @@ static void __init scan_for_ionodes(void)
brd = find_lboard_any(brd, KLTYPE_SNIA);
while (brd) {
pda->cnodeid_to_nasid_table[numionodes] =
brd->brd_nasid;
sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
@ -602,8 +611,7 @@ static void __init scan_for_ionodes(void)
root_lboard[nasid_to_cnodeid(nasid)],
KLTYPE_TIO);
while (brd) {
pda->cnodeid_to_nasid_table[numionodes] =
brd->brd_nasid;
sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
@ -614,7 +622,6 @@ static void __init scan_for_ionodes(void)
brd = find_lboard_any(brd, KLTYPE_TIO);
}
}
}
int
@ -623,7 +630,8 @@ nasid_slice_to_cpuid(int nasid, int slice)
long cpu;
for (cpu=0; cpu < NR_CPUS; cpu++)
if (nodepda->phys_cpuid[cpu].nasid == nasid && nodepda->phys_cpuid[cpu].slice == slice)
if (cpuid_to_nasid(cpu) == nasid &&
cpuid_to_slice(cpu) == slice)
return cpu;
return -1;

60
arch/ia64/sn/kernel/tiocx.c
View File

@ -21,6 +21,8 @@
#include <asm/sn/types.h>
#include <asm/sn/shubio.h>
#include <asm/sn/tiocx.h>
#include <asm/sn/l1.h>
#include <asm/sn/module.h>
#include "tio.h"
#include "xtalk/xwidgetdev.h"
#include "xtalk/hubdev.h"
@ -308,14 +310,12 @@ void tiocx_irq_free(struct sn_irq_info *sn_irq_info)
}
}
uint64_t
tiocx_dma_addr(uint64_t addr)
uint64_t tiocx_dma_addr(uint64_t addr)
{
return PHYS_TO_TIODMA(addr);
}
uint64_t
tiocx_swin_base(int nasid)
uint64_t tiocx_swin_base(int nasid)
{
return TIO_SWIN_BASE(nasid, TIOCX_CORELET);
}
@ -330,19 +330,6 @@ EXPORT_SYMBOL(tiocx_bus_type);
EXPORT_SYMBOL(tiocx_dma_addr);
EXPORT_SYMBOL(tiocx_swin_base);
static uint64_t tiocx_get_hubdev_info(u64 handle, u64 address)
{
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
ret_stuff.v0 = 0;
ia64_sal_oemcall_nolock(&ret_stuff,
SN_SAL_IOIF_GET_HUBDEV_INFO,
handle, address, 0, 0, 0, 0, 0);
return ret_stuff.v0;
}
static void tio_conveyor_set(nasid_t nasid, int enable_flag)
{
uint64_t ice_frz;
@ -379,7 +366,29 @@ static void tio_corelet_reset(nasid_t nasid, int corelet)
udelay(2000);
}
static int fpga_attached(nasid_t nasid)
static int tiocx_btchar_get(int nasid)
{
moduleid_t module_id;
geoid_t geoid;
int cnodeid;
cnodeid = nasid_to_cnodeid(nasid);
geoid = cnodeid_get_geoid(cnodeid);
module_id = geo_module(geoid);
return MODULE_GET_BTCHAR(module_id);
}
static int is_fpga_brick(int nasid)
{
switch (tiocx_btchar_get(nasid)) {
case L1_BRICKTYPE_SA:
case L1_BRICKTYPE_ATHENA:
return 1;
}
return 0;
}
static int bitstream_loaded(nasid_t nasid)
{
uint64_t cx_credits;
@ -396,7 +405,7 @@ static int tiocx_reload(struct cx_dev *cx_dev)
int mfg_num = CX_DEV_NONE;
nasid_t nasid = cx_dev->cx_id.nasid;
if (fpga_attached(nasid)) {
if (bitstream_loaded(nasid)) {
uint64_t cx_id;
cx_id =
@ -427,9 +436,10 @@ static ssize_t show_cxdev_control(struct device *dev, char *buf)
{
struct cx_dev *cx_dev = to_cx_dev(dev);
return sprintf(buf, "0x%x 0x%x 0x%x\n",
return sprintf(buf, "0x%x 0x%x 0x%x %d\n",
cx_dev->cx_id.nasid,
cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num);
cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num,
tiocx_btchar_get(cx_dev->cx_id.nasid));
}
static ssize_t store_cxdev_control(struct device *dev, const char *buf,
@ -475,20 +485,14 @@ static int __init tiocx_init(void)
if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
break; /* No more nasids .. bail out of loop */
if (nasid & 0x1) { /* TIO's are always odd */
if ((nasid & 0x1) && is_fpga_brick(nasid)) {
struct hubdev_info *hubdev;
uint64_t status;
struct xwidget_info *widgetp;
DBG("Found TIO at nasid 0x%x\n", nasid);
hubdev =
(struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo);
status =
tiocx_get_hubdev_info(nasid,
(uint64_t) __pa(hubdev));
if (status)
continue;
widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET];

289
arch/ia64/sn/kernel/xp_main.c Normal file
View File

@ -0,0 +1,289 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
/*
* Cross Partition (XP) base.
*
* XP provides a base from which its users can interact
* with XPC, yet not be dependent on XPC.
*
*/
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <asm/sn/intr.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/xp.h>
/*
* Target of nofault PIO read.
*/
u64 xp_nofault_PIOR_target;
/*
* xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
* users of XPC.
*/
struct xpc_registration xpc_registrations[XPC_NCHANNELS];
/*
* Initialize the XPC interface to indicate that XPC isn't loaded.
*/
static enum xpc_retval xpc_notloaded(void) { return xpcNotLoaded; }
struct xpc_interface xpc_interface = {
(void (*)(int)) xpc_notloaded,
(void (*)(int)) xpc_notloaded,
(enum xpc_retval (*)(partid_t, int, u32, void **)) xpc_notloaded,
(enum xpc_retval (*)(partid_t, int, void *)) xpc_notloaded,
(enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func, void *))
xpc_notloaded,
(void (*)(partid_t, int, void *)) xpc_notloaded,
(enum xpc_retval (*)(partid_t, void *)) xpc_notloaded
};
/*
* XPC calls this when it (the XPC module) has been loaded.
*/
void
xpc_set_interface(void (*connect)(int),
void (*disconnect)(int),
enum xpc_retval (*allocate)(partid_t, int, u32, void **),
enum xpc_retval (*send)(partid_t, int, void *),
enum xpc_retval (*send_notify)(partid_t, int, void *,
xpc_notify_func, void *),
void (*received)(partid_t, int, void *),
enum xpc_retval (*partid_to_nasids)(partid_t, void *))
{
xpc_interface.connect = connect;
xpc_interface.disconnect = disconnect;
xpc_interface.allocate = allocate;
xpc_interface.send = send;
xpc_interface.send_notify = send_notify;
xpc_interface.received = received;
xpc_interface.partid_to_nasids = partid_to_nasids;
}
/*
* XPC calls this when it (the XPC module) is being unloaded.
*/
void
xpc_clear_interface(void)
{
xpc_interface.connect = (void (*)(int)) xpc_notloaded;
xpc_interface.disconnect = (void (*)(int)) xpc_notloaded;
xpc_interface.allocate = (enum xpc_retval (*)(partid_t, int, u32,
void **)) xpc_notloaded;
xpc_interface.send = (enum xpc_retval (*)(partid_t, int, void *))
xpc_notloaded;
xpc_interface.send_notify = (enum xpc_retval (*)(partid_t, int, void *,
xpc_notify_func, void *)) xpc_notloaded;
xpc_interface.received = (void (*)(partid_t, int, void *))
xpc_notloaded;
xpc_interface.partid_to_nasids = (enum xpc_retval (*)(partid_t, void *))
xpc_notloaded;
}
/*
* Register for automatic establishment of a channel connection whenever
* a partition comes up.
*
* Arguments:
*
* ch_number - channel # to register for connection.
* func - function to call for asynchronous notification of channel
* state changes (i.e., connection, disconnection, error) and
* the arrival of incoming messages.
* key - pointer to optional user-defined value that gets passed back
* to the user on any callouts made to func.
* payload_size - size in bytes of the XPC message's payload area which
* contains a user-defined message. The user should make
* this large enough to hold their largest message.
* nentries - max #of XPC message entries a message queue can contain.
* The actual number, which is determined when a connection
* is established and may be less then requested, will be
* passed to the user via the xpcConnected callout.
* assigned_limit - max number of kthreads allowed to be processing
* messages (per connection) at any given instant.
* idle_limit - max number of kthreads allowed to be idle at any given
* instant.
*/
enum xpc_retval
xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
u16 nentries, u32 assigned_limit, u32 idle_limit)
{
struct xpc_registration *registration;
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
DBUG_ON(payload_size == 0 || nentries == 0);
DBUG_ON(func == NULL);
DBUG_ON(assigned_limit == 0 || idle_limit > assigned_limit);
registration = &xpc_registrations[ch_number];
if (down_interruptible(&registration->sema) != 0) {
return xpcInterrupted;
}
/* if XPC_CHANNEL_REGISTERED(ch_number) */
if (registration->func != NULL) {
up(&registration->sema);
return xpcAlreadyRegistered;
}
/* register the channel for connection */
registration->msg_size = XPC_MSG_SIZE(payload_size);
registration->nentries = nentries;
registration->assigned_limit = assigned_limit;
registration->idle_limit = idle_limit;
registration->key = key;
registration->func = func;
up(&registration->sema);
xpc_interface.connect(ch_number);
return xpcSuccess;
}
/*
* Remove the registration for automatic connection of the specified channel
* when a partition comes up.
*
* Before returning this xpc_disconnect() will wait for all connections on the
* specified channel have been closed/torndown. So the caller can be assured
* that they will not be receiving any more callouts from XPC to their
* function registered via xpc_connect().
*
* Arguments:
*
* ch_number - channel # to unregister.
*/
void
xpc_disconnect(int ch_number)
{
struct xpc_registration *registration;
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
registration = &xpc_registrations[ch_number];
/*
* We've decided not to make this a down_interruptible(), since we
* figured XPC's users will just turn around and call xpc_disconnect()
* again anyways, so we might as well wait, if need be.
*/
down(&registration->sema);
/* if !XPC_CHANNEL_REGISTERED(ch_number) */
if (registration->func == NULL) {
up(&registration->sema);
return;
}
/* remove the connection registration for the specified channel */
registration->func = NULL;
registration->key = NULL;
registration->nentries = 0;
registration->msg_size = 0;
registration->assigned_limit = 0;
registration->idle_limit = 0;
xpc_interface.disconnect(ch_number);
up(&registration->sema);
return;
}
int __init
xp_init(void)
{
int ret, ch_number;
u64 func_addr = *(u64 *) xp_nofault_PIOR;
u64 err_func_addr = *(u64 *) xp_error_PIOR;
if (!ia64_platform_is("sn2")) {
return -ENODEV;
}
/*
* Register a nofault code region which performs a cross-partition
* PIO read. If the PIO read times out, the MCA handler will consume
* the error and return to a kernel-provided instruction to indicate
* an error. This PIO read exists because it is guaranteed to timeout
* if the destination is down (AMO operations do not timeout on at
* least some CPUs on Shubs <= v1.2, which unfortunately we have to
* work around).
*/
if ((ret = sn_register_nofault_code(func_addr, err_func_addr,
err_func_addr, 1, 1)) != 0) {
printk(KERN_ERR "XP: can't register nofault code, error=%d\n",
ret);
}
/*
* Setup the nofault PIO read target. (There is no special reason why
* SH_IPI_ACCESS was selected.)
*/
if (is_shub2()) {
xp_nofault_PIOR_target = SH2_IPI_ACCESS0;
} else {
xp_nofault_PIOR_target = SH1_IPI_ACCESS;
}
/* initialize the connection registration semaphores */
for (ch_number = 0; ch_number < XPC_NCHANNELS; ch_number++) {
sema_init(&xpc_registrations[ch_number].sema, 1); /* mutex */
}
return 0;
}
module_init(xp_init);
void __exit
xp_exit(void)
{
u64 func_addr = *(u64 *) xp_nofault_PIOR;
u64 err_func_addr = *(u64 *) xp_error_PIOR;
/* unregister the PIO read nofault code region */
(void) sn_register_nofault_code(func_addr, err_func_addr,
err_func_addr, 1, 0);
}
module_exit(xp_exit);
MODULE_AUTHOR("Silicon Graphics, Inc.");
MODULE_DESCRIPTION("Cross Partition (XP) base");
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(xp_nofault_PIOR);
EXPORT_SYMBOL(xp_nofault_PIOR_target);
EXPORT_SYMBOL(xpc_registrations);
EXPORT_SYMBOL(xpc_interface);
EXPORT_SYMBOL(xpc_clear_interface);
EXPORT_SYMBOL(xpc_set_interface);
EXPORT_SYMBOL(xpc_connect);
EXPORT_SYMBOL(xpc_disconnect);

31
arch/ia64/sn/kernel/xp_nofault.S Normal file
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@ -0,0 +1,31 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
/*
* The xp_nofault_PIOR function takes a pointer to a remote PIO register
* and attempts to load and consume a value from it. This function
* will be registered as a nofault code block. In the event that the
* PIO read fails, the MCA handler will force the error to look
* corrected and vector to the xp_error_PIOR which will return an error.
*
* extern int xp_nofault_PIOR(void *remote_register);
*/
.global xp_nofault_PIOR
xp_nofault_PIOR:
mov r8=r0 // Stage a success return value
ld8.acq r9=[r32];; // PIO Read the specified register
adds r9=1,r9 // Add to force a consume
br.ret.sptk.many b0;; // Return success
.global xp_error_PIOR
xp_error_PIOR:
mov r8=1 // Return value of 1
br.ret.sptk.many b0;; // Return failure

991
arch/ia64/sn/kernel/xpc.h Normal file
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@ -0,0 +1,991 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
/*
* Cross Partition Communication (XPC) structures and macros.
*/
#ifndef _IA64_SN_KERNEL_XPC_H
#define _IA64_SN_KERNEL_XPC_H
#include <linux/config.h>
#include <linux/interrupt.h>
#include <linux/sysctl.h>
#include <linux/device.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/sn/bte.h>
#include <asm/sn/clksupport.h>
#include <asm/sn/addrs.h>
#include <asm/sn/mspec.h>
#include <asm/sn/shub_mmr.h>
#include <asm/sn/xp.h>
/*
* XPC Version numbers consist of a major and minor number. XPC can always
* talk to versions with same major #, and never talk to versions with a
* different major #.
*/
#define _XPC_VERSION(_maj, _min) (((_maj) << 4) | ((_min) & 0xf))
#define XPC_VERSION_MAJOR(_v) ((_v) >> 4)
#define XPC_VERSION_MINOR(_v) ((_v) & 0xf)
/*
* The next macros define word or bit representations for given
* C-brick nasid in either the SAL provided bit array representing
* nasids in the partition/machine or the AMO_t array used for
* inter-partition initiation communications.
*
* For SN2 machines, C-Bricks are alway even numbered NASIDs. As
* such, some space will be saved by insisting that nasid information
* passed from SAL always be packed for C-Bricks and the
* cross-partition interrupts use the same packing scheme.
*/
#define XPC_NASID_W_INDEX(_n) (((_n) / 64) / 2)
#define XPC_NASID_B_INDEX(_n) (((_n) / 2) & (64 - 1))
#define XPC_NASID_IN_ARRAY(_n, _p) ((_p)[XPC_NASID_W_INDEX(_n)] & \
(1UL << XPC_NASID_B_INDEX(_n)))
#define XPC_NASID_FROM_W_B(_w, _b) (((_w) * 64 + (_b)) * 2)
#define XPC_HB_DEFAULT_INTERVAL 5 /* incr HB every x secs */
#define XPC_HB_CHECK_DEFAULT_TIMEOUT 20 /* check HB every x secs */
/* define the process name of HB checker and the CPU it is pinned to */
#define XPC_HB_CHECK_THREAD_NAME "xpc_hb"
#define XPC_HB_CHECK_CPU 0
/* define the process name of the discovery thread */
#define XPC_DISCOVERY_THREAD_NAME "xpc_discovery"
#define XPC_HB_ALLOWED(_p, _v) ((_v)->heartbeating_to_mask & (1UL << (_p)))
#define XPC_ALLOW_HB(_p, _v) (_v)->heartbeating_to_mask |= (1UL << (_p))
#define XPC_DISALLOW_HB(_p, _v) (_v)->heartbeating_to_mask &= (~(1UL << (_p)))
/*
* Reserved Page provided by SAL.
*
* SAL provides one page per partition of reserved memory. When SAL
* initialization is complete, SAL_signature, SAL_version, partid,
* part_nasids, and mach_nasids are set.
*
* Note: Until vars_pa is set, the partition XPC code has not been initialized.
*/
struct xpc_rsvd_page {
u64 SAL_signature; /* SAL unique signature */
u64 SAL_version; /* SAL specified version */
u8 partid; /* partition ID from SAL */
u8 version;
u8 pad[6]; /* pad to u64 align */
u64 vars_pa;
u64 part_nasids[XP_NASID_MASK_WORDS] ____cacheline_aligned;
u64 mach_nasids[XP_NASID_MASK_WORDS] ____cacheline_aligned;
};
#define XPC_RP_VERSION _XPC_VERSION(1,0) /* version 1.0 of the reserved page */
#define XPC_RSVD_PAGE_ALIGNED_SIZE \
(L1_CACHE_ALIGN(sizeof(struct xpc_rsvd_page)))
/*
* Define the structures by which XPC variables can be exported to other
* partitions. (There are two: struct xpc_vars and struct xpc_vars_part)
*/
/*
* The following structure describes the partition generic variables
* needed by other partitions in order to properly initialize.
*
* struct xpc_vars version number also applies to struct xpc_vars_part.
* Changes to either structure and/or related functionality should be
* reflected by incrementing either the major or minor version numbers
* of struct xpc_vars.
*/
struct xpc_vars {
u8 version;
u64 heartbeat;
u64 heartbeating_to_mask;
u64 kdb_status; /* 0 = machine running */
int act_nasid;
int act_phys_cpuid;
u64 vars_part_pa;
u64 amos_page_pa; /* paddr of page of AMOs from MSPEC driver */
AMO_t *amos_page; /* vaddr of page of AMOs from MSPEC driver */
AMO_t *act_amos; /* pointer to the first activation AMO */
};
#define XPC_V_VERSION _XPC_VERSION(3,0) /* version 3.0 of the cross vars */
#define XPC_VARS_ALIGNED_SIZE (L1_CACHE_ALIGN(sizeof(struct xpc_vars)))
/*
* The following structure describes the per partition specific variables.
*
* An array of these structures, one per partition, will be defined. As a
* partition becomes active XPC will copy the array entry corresponding to
* itself from that partition. It is desirable that the size of this
* structure evenly divide into a cacheline, such that none of the entries
* in this array crosses a cacheline boundary. As it is now, each entry
* occupies half a cacheline.
*/
struct xpc_vars_part {
u64 magic;
u64 openclose_args_pa; /* physical address of open and close args */
u64 GPs_pa; /* physical address of Get/Put values */
u64 IPI_amo_pa; /* physical address of IPI AMO_t structure */
int IPI_nasid; /* nasid of where to send IPIs */
int IPI_phys_cpuid; /* physical CPU ID of where to send IPIs */
u8 nchannels; /* #of defined channels supported */
u8 reserved[23]; /* pad to a full 64 bytes */
};
/*
* The vars_part MAGIC numbers play a part in the first contact protocol.
*
* MAGIC1 indicates that the per partition specific variables for a remote
* partition have been initialized by this partition.
*
* MAGIC2 indicates that this partition has pulled the remote partititions
* per partition variables that pertain to this partition.
*/
#define XPC_VP_MAGIC1 0x0053524156435058L /* 'XPCVARS\0'L (little endian) */
#define XPC_VP_MAGIC2 0x0073726176435058L /* 'XPCvars\0'L (little endian) */
/*
* Functions registered by add_timer() or called by kernel_thread() only
* allow for a single 64-bit argument. The following macros can be used to
* pack and unpack two (32-bit, 16-bit or 8-bit) arguments into or out from
* the passed argument.
*/
#define XPC_PACK_ARGS(_arg1, _arg2) \
((((u64) _arg1) & 0xffffffff) | \
((((u64) _arg2) & 0xffffffff) << 32))
#define XPC_UNPACK_ARG1(_args) (((u64) _args) & 0xffffffff)
#define XPC_UNPACK_ARG2(_args) ((((u64) _args) >> 32) & 0xffffffff)
/*
* Define a Get/Put value pair (pointers) used with a message queue.
*/
struct xpc_gp {
s64 get; /* Get value */
s64 put; /* Put value */
};
#define XPC_GP_SIZE \
L1_CACHE_ALIGN(sizeof(struct xpc_gp) * XPC_NCHANNELS)
/*
* Define a structure that contains arguments associated with opening and
* closing a channel.
*/
struct xpc_openclose_args {
u16 reason; /* reason why channel is closing */
u16 msg_size; /* sizeof each message entry */
u16 remote_nentries; /* #of message entries in remote msg queue */
u16 local_nentries; /* #of message entries in local msg queue */
u64 local_msgqueue_pa; /* physical address of local message queue */
};
#define XPC_OPENCLOSE_ARGS_SIZE \
L1_CACHE_ALIGN(sizeof(struct xpc_openclose_args) * XPC_NCHANNELS)
/* struct xpc_msg flags */
#define XPC_M_DONE 0x01 /* msg has been received/consumed */
#define XPC_M_READY 0x02 /* msg is ready to be sent */
#define XPC_M_INTERRUPT 0x04 /* send interrupt when msg consumed */
#define XPC_MSG_ADDRESS(_payload) \
((struct xpc_msg *)((u8 *)(_payload) - XPC_MSG_PAYLOAD_OFFSET))
/*
* Defines notify entry.
*
* This is used to notify a message's sender that their message was received
* and consumed by the intended recipient.
*/
struct xpc_notify {
struct semaphore sema; /* notify semaphore */
u8 type; /* type of notification */
/* the following two fields are only used if type == XPC_N_CALL */
xpc_notify_func func; /* user's notify function */
void *key; /* pointer to user's key */
};
/* struct xpc_notify type of notification */
#define XPC_N_CALL 0x01 /* notify function provided by user */
/*
* Define the structure that manages all the stuff required by a channel. In
* particular, they are used to manage the messages sent across the channel.
*
* This structure is private to a partition, and is NOT shared across the
* partition boundary.
*
* There is an array of these structures for each remote partition. It is
* allocated at the time a partition becomes active. The array contains one
* of these structures for each potential channel connection to that partition.
*
* Each of these structures manages two message queues (circular buffers).
* They are allocated at the time a channel connection is made. One of
* these message queues (local_msgqueue) holds the locally created messages
* that are destined for the remote partition. The other of these message
* queues (remote_msgqueue) is a locally cached copy of the remote partition's
* own local_msgqueue.
*
* The following is a description of the Get/Put pointers used to manage these
* two message queues. Consider the local_msgqueue to be on one partition
* and the remote_msgqueue to be its cached copy on another partition. A
* description of what each of the lettered areas contains is included.
*
*
* local_msgqueue remote_msgqueue
*
* |/////////| |/////////|
* w_remote_GP.get --> +---------+ |/////////|
* | F | |/////////|
* remote_GP.get --> +---------+ +---------+ <-- local_GP->get
* | | | |
* | | | E |
* | | | |
* | | +---------+ <-- w_local_GP.get
* | B | |/////////|
* | | |////D////|
* | | |/////////|
* | | +---------+ <-- w_remote_GP.put
* | | |////C////|
* local_GP->put --> +---------+ +---------+ <-- remote_GP.put
* | | |/////////|
* | A | |/////////|
* | | |/////////|
* w_local_GP.put --> +---------+ |/////////|
* |/////////| |/////////|
*
*
* ( remote_GP.[get|put] are cached copies of the remote
* partition's local_GP->[get|put], and thus their values can
* lag behind their counterparts on the remote partition. )
*
*
* A - Messages that have been allocated, but have not yet been sent to the
* remote partition.
*
* B - Messages that have been sent, but have not yet been acknowledged by the
* remote partition as having been received.
*
* C - Area that needs to be prepared for the copying of sent messages, by
* the clearing of the message flags of any previously received messages.
*
* D - Area into which sent messages are to be copied from the remote
* partition's local_msgqueue and then delivered to their intended
* recipients. [ To allow for a multi-message copy, another pointer
* (next_msg_to_pull) has been added to keep track of the next message
* number needing to be copied (pulled). It chases after w_remote_GP.put.
* Any messages lying between w_local_GP.get and next_msg_to_pull have
* been copied and are ready to be delivered. ]
*
* E - Messages that have been copied and delivered, but have not yet been
* acknowledged by the recipient as having been received.
*
* F - Messages that have been acknowledged, but XPC has not yet notified the
* sender that the message was received by its intended recipient.
* This is also an area that needs to be prepared for the allocating of
* new messages, by the clearing of the message flags of the acknowledged
* messages.
*/
struct xpc_channel {
partid_t partid; /* ID of remote partition connected */
spinlock_t lock; /* lock for updating this structure */
u32 flags; /* general flags */
enum xpc_retval reason; /* reason why channel is disconnect'g */
int reason_line; /* line# disconnect initiated from */
u16 number; /* channel # */
u16 msg_size; /* sizeof each msg entry */
u16 local_nentries; /* #of msg entries in local msg queue */
u16 remote_nentries; /* #of msg entries in remote msg queue*/
void *local_msgqueue_base; /* base address of kmalloc'd space */
struct xpc_msg *local_msgqueue; /* local message queue */
void *remote_msgqueue_base; /* base address of kmalloc'd space */
struct xpc_msg *remote_msgqueue;/* cached copy of remote partition's */
/* local message queue */
u64 remote_msgqueue_pa; /* phys addr of remote partition's */
/* local message queue */
atomic_t references; /* #of external references to queues */
atomic_t n_on_msg_allocate_wq; /* #on msg allocation wait queue */
wait_queue_head_t msg_allocate_wq; /* msg allocation wait queue */
/* queue of msg senders who want to be notified when msg received */
atomic_t n_to_notify; /* #of msg senders to notify */
struct xpc_notify *notify_queue;/* notify queue for messages sent */
xpc_channel_func func; /* user's channel function */
void *key; /* pointer to user's key */
struct semaphore msg_to_pull_sema; /* next msg to pull serialization */
struct semaphore teardown_sema; /* wait for teardown completion */
struct xpc_openclose_args *local_openclose_args; /* args passed on */
/* opening or closing of channel */
/* various flavors of local and remote Get/Put values */
struct xpc_gp *local_GP; /* local Get/Put values */
struct xpc_gp remote_GP; /* remote Get/Put values */
struct xpc_gp w_local_GP; /* working local Get/Put values */
struct xpc_gp w_remote_GP; /* working remote Get/Put values */
s64 next_msg_to_pull; /* Put value of next msg to pull */
/* kthread management related fields */
// >>> rethink having kthreads_assigned_limit and kthreads_idle_limit; perhaps
// >>> allow the assigned limit be unbounded and let the idle limit be dynamic
// >>> dependent on activity over the last interval of time
atomic_t kthreads_assigned; /* #of kthreads assigned to channel */
u32 kthreads_assigned_limit; /* limit on #of kthreads assigned */
atomic_t kthreads_idle; /* #of kthreads idle waiting for work */
u32 kthreads_idle_limit; /* limit on #of kthreads idle */
atomic_t kthreads_active; /* #of kthreads actively working */
// >>> following field is temporary
u32 kthreads_created; /* total #of kthreads created */
wait_queue_head_t idle_wq; /* idle kthread wait queue */
} ____cacheline_aligned;
/* struct xpc_channel flags */
#define XPC_C_WASCONNECTED 0x00000001 /* channel was connected */
#define XPC_C_ROPENREPLY 0x00000002 /* remote open channel reply */
#define XPC_C_OPENREPLY 0x00000004 /* local open channel reply */
#define XPC_C_ROPENREQUEST 0x00000008 /* remote open channel request */
#define XPC_C_OPENREQUEST 0x00000010 /* local open channel request */
#define XPC_C_SETUP 0x00000020 /* channel's msgqueues are alloc'd */
#define XPC_C_CONNECTCALLOUT 0x00000040 /* channel connected callout made */
#define XPC_C_CONNECTED 0x00000080 /* local channel is connected */
#define XPC_C_CONNECTING 0x00000100 /* channel is being connected */
#define XPC_C_RCLOSEREPLY 0x00000200 /* remote close channel reply */
#define XPC_C_CLOSEREPLY 0x00000400 /* local close channel reply */
#define XPC_C_RCLOSEREQUEST 0x00000800 /* remote close channel request */
#define XPC_C_CLOSEREQUEST 0x00001000 /* local close channel request */
#define XPC_C_DISCONNECTED 0x00002000 /* channel is disconnected */
#define XPC_C_DISCONNECTING 0x00004000 /* channel is being disconnected */
/*
* Manages channels on a partition basis. There is one of these structures
* for each partition (a partition will never utilize the structure that
* represents itself).
*/
struct xpc_partition {
/* XPC HB infrastructure */
u64 remote_rp_pa; /* phys addr of partition's rsvd pg */
u64 remote_vars_pa; /* phys addr of partition's vars */
u64 remote_vars_part_pa; /* phys addr of partition's vars part */
u64 last_heartbeat; /* HB at last read */
u64 remote_amos_page_pa; /* phys addr of partition's amos page */
int remote_act_nasid; /* active part's act/deact nasid */
int remote_act_phys_cpuid; /* active part's act/deact phys cpuid */
u32 act_IRQ_rcvd; /* IRQs since activation */
spinlock_t act_lock; /* protect updating of act_state */
u8 act_state; /* from XPC HB viewpoint */
enum xpc_retval reason; /* reason partition is deactivating */
int reason_line; /* line# deactivation initiated from */
int reactivate_nasid; /* nasid in partition to reactivate */
/* XPC infrastructure referencing and teardown control */
u8 setup_state; /* infrastructure setup state */
wait_queue_head_t teardown_wq; /* kthread waiting to teardown infra */
atomic_t references; /* #of references to infrastructure */
/*
* NONE OF THE PRECEDING FIELDS OF THIS STRUCTURE WILL BE CLEARED WHEN
* XPC SETS UP THE NECESSARY INFRASTRUCTURE TO SUPPORT CROSS PARTITION
* COMMUNICATION. ALL OF THE FOLLOWING FIELDS WILL BE CLEARED. (THE
* 'nchannels' FIELD MUST BE THE FIRST OF THE FIELDS TO BE CLEARED.)
*/
u8 nchannels; /* #of defined channels supported */
atomic_t nchannels_active; /* #of channels that are not DISCONNECTED */
struct xpc_channel *channels;/* array of channel structures */
void *local_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *local_GPs; /* local Get/Put values */
void *remote_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *remote_GPs;/* copy of remote partition's local Get/Put */
/* values */
u64 remote_GPs_pa; /* phys address of remote partition's local */
/* Get/Put values */
/* fields used to pass args when opening or closing a channel */
void *local_openclose_args_base; /* base address of kmalloc'd space */
struct xpc_openclose_args *local_openclose_args; /* local's args */
void *remote_openclose_args_base; /* base address of kmalloc'd space */
struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */
/* args */
u64 remote_openclose_args_pa; /* phys addr of remote's args */
/* IPI sending, receiving and handling related fields */
int remote_IPI_nasid; /* nasid of where to send IPIs */
int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */
AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */
AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */
u64 local_IPI_amo; /* IPI amo flags yet to be handled */
char IPI_owner[8]; /* IPI owner's name */
struct timer_list dropped_IPI_timer; /* dropped IPI timer */
spinlock_t IPI_lock; /* IPI handler lock */
/* channel manager related fields */
atomic_t channel_mgr_requests; /* #of requests to activate chan mgr */
wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */
} ____cacheline_aligned;
/* struct xpc_partition act_state values (for XPC HB) */
#define XPC_P_INACTIVE 0x00 /* partition is not active */
#define XPC_P_ACTIVATION_REQ 0x01 /* created thread to activate */
#define XPC_P_ACTIVATING 0x02 /* activation thread started */
#define XPC_P_ACTIVE 0x03 /* xpc_partition_up() was called */
#define XPC_P_DEACTIVATING 0x04 /* partition deactivation initiated */
#define XPC_DEACTIVATE_PARTITION(_p, _reason) \
xpc_deactivate_partition(__LINE__, (_p), (_reason))
/* struct xpc_partition setup_state values */
#define XPC_P_UNSET 0x00 /* infrastructure was never setup */
#define XPC_P_SETUP 0x01 /* infrastructure is setup */
#define XPC_P_WTEARDOWN 0x02 /* waiting to teardown infrastructure */
#define XPC_P_TORNDOWN 0x03 /* infrastructure is torndown */
/*
* struct xpc_partition IPI_timer #of seconds to wait before checking for
* dropped IPIs. These occur whenever an IPI amo write doesn't complete until
* after the IPI was received.
*/
#define XPC_P_DROPPED_IPI_WAIT (0.25 * HZ)
#define XPC_PARTID(_p) ((partid_t) ((_p) - &xpc_partitions[0]))
/* found in xp_main.c */
extern struct xpc_registration xpc_registrations[];
/* >>> found in xpc_main.c only */
extern struct device *xpc_part;
extern struct device *xpc_chan;
extern irqreturn_t xpc_notify_IRQ_handler(int, void *, struct pt_regs *);
extern void xpc_dropped_IPI_check(struct xpc_partition *);
extern void xpc_activate_kthreads(struct xpc_channel *, int);
extern void xpc_create_kthreads(struct xpc_channel *, int);
extern void xpc_disconnect_wait(int);
/* found in xpc_main.c and efi-xpc.c */
extern void xpc_activate_partition(struct xpc_partition *);
/* found in xpc_partition.c */
extern int xpc_exiting;
extern int xpc_hb_interval;
extern int xpc_hb_check_interval;
extern struct xpc_vars *xpc_vars;
extern struct xpc_rsvd_page *xpc_rsvd_page;
extern struct xpc_vars_part *xpc_vars_part;
extern struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
extern char xpc_remote_copy_buffer[];
extern struct xpc_rsvd_page *xpc_rsvd_page_init(void);
extern void xpc_allow_IPI_ops(void);
extern void xpc_restrict_IPI_ops(void);
extern int xpc_identify_act_IRQ_sender(void);
extern enum xpc_retval xpc_mark_partition_active(struct xpc_partition *);
extern void xpc_mark_partition_inactive(struct xpc_partition *);
extern void xpc_discovery(void);
extern void xpc_check_remote_hb(void);
extern void xpc_deactivate_partition(const int, struct xpc_partition *,
enum xpc_retval);
extern enum xpc_retval xpc_initiate_partid_to_nasids(partid_t, void *);
/* found in xpc_channel.c */
extern void xpc_initiate_connect(int);
extern void xpc_initiate_disconnect(int);
extern enum xpc_retval xpc_initiate_allocate(partid_t, int, u32, void **);
extern enum xpc_retval xpc_initiate_send(partid_t, int, void *);
extern enum xpc_retval xpc_initiate_send_notify(partid_t, int, void *,
xpc_notify_func, void *);
extern void xpc_initiate_received(partid_t, int, void *);
extern enum xpc_retval xpc_setup_infrastructure(struct xpc_partition *);
extern enum xpc_retval xpc_pull_remote_vars_part(struct xpc_partition *);
extern void xpc_process_channel_activity(struct xpc_partition *);
extern void xpc_connected_callout(struct xpc_channel *);
extern void xpc_deliver_msg(struct xpc_channel *);
extern void xpc_disconnect_channel(const int, struct xpc_channel *,
enum xpc_retval, unsigned long *);
extern void xpc_disconnected_callout(struct xpc_channel *);
extern void xpc_partition_down(struct xpc_partition *, enum xpc_retval);
extern void xpc_teardown_infrastructure(struct xpc_partition *);
static inline void
xpc_wakeup_channel_mgr(struct xpc_partition *part)
{
if (atomic_inc_return(&part->channel_mgr_requests) == 1) {
wake_up(&part->channel_mgr_wq);
}
}
/*
* These next two inlines are used to keep us from tearing down a channel's
* msg queues while a thread may be referencing them.
*/
static inline void
xpc_msgqueue_ref(struct xpc_channel *ch)
{
atomic_inc(&ch->references);
}
static inline void
xpc_msgqueue_deref(struct xpc_channel *ch)
{
s32 refs = atomic_dec_return(&ch->references);
DBUG_ON(refs < 0);
if (refs == 0) {
xpc_wakeup_channel_mgr(&xpc_partitions[ch->partid]);
}
}
#define XPC_DISCONNECT_CHANNEL(_ch, _reason, _irqflgs) \
xpc_disconnect_channel(__LINE__, _ch, _reason, _irqflgs)
/*
* These two inlines are used to keep us from tearing down a partition's
* setup infrastructure while a thread may be referencing it.
*/
static inline void
xpc_part_deref(struct xpc_partition *part)
{
s32 refs = atomic_dec_return(&part->references);
DBUG_ON(refs < 0);
if (refs == 0 && part->setup_state == XPC_P_WTEARDOWN) {
wake_up(&part->teardown_wq);
}
}
static inline int
xpc_part_ref(struct xpc_partition *part)
{
int setup;
atomic_inc(&part->references);
setup = (part->setup_state == XPC_P_SETUP);
if (!setup) {
xpc_part_deref(part);
}
return setup;
}
/*
* The following macro is to be used for the setting of the reason and
* reason_line fields in both the struct xpc_channel and struct xpc_partition
* structures.
*/
#define XPC_SET_REASON(_p, _reason, _line) \
{ \
(_p)->reason = _reason; \
(_p)->reason_line = _line; \
}
/*
* The following set of macros and inlines are used for the sending and
* receiving of IPIs (also known as IRQs). There are two flavors of IPIs,
* one that is associated with partition activity (SGI_XPC_ACTIVATE) and
* the other that is associated with channel activity (SGI_XPC_NOTIFY).
*/
static inline u64
xpc_IPI_receive(AMO_t *amo)
{
return FETCHOP_LOAD_OP(TO_AMO((u64) &amo->variable), FETCHOP_CLEAR);
}
static inline enum xpc_retval
xpc_IPI_send(AMO_t *amo, u64 flag, int nasid, int phys_cpuid, int vector)
{
int ret = 0;
unsigned long irq_flags;
local_irq_save(irq_flags);
FETCHOP_STORE_OP(TO_AMO((u64) &amo->variable), FETCHOP_OR, flag);
sn_send_IPI_phys(nasid, phys_cpuid, vector, 0);
/*
* We must always use the nofault function regardless of whether we
* are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
* didn't, we'd never know that the other partition is down and would
* keep sending IPIs and AMOs to it until the heartbeat times out.
*/
ret = xp_nofault_PIOR((u64 *) GLOBAL_MMR_ADDR(NASID_GET(&amo->variable),
xp_nofault_PIOR_target));
local_irq_restore(irq_flags);
return ((ret == 0) ? xpcSuccess : xpcPioReadError);
}
/*
* IPIs associated with SGI_XPC_ACTIVATE IRQ.
*/
/*
* Flag the appropriate AMO variable and send an IPI to the specified node.
*/
static inline void
xpc_activate_IRQ_send(u64 amos_page, int from_nasid, int to_nasid,
int to_phys_cpuid)
{
int w_index = XPC_NASID_W_INDEX(from_nasid);
int b_index = XPC_NASID_B_INDEX(from_nasid);
AMO_t *amos = (AMO_t *) __va(amos_page +
(XP_MAX_PARTITIONS * sizeof(AMO_t)));
(void) xpc_IPI_send(&amos[w_index], (1UL << b_index), to_nasid,
to_phys_cpuid, SGI_XPC_ACTIVATE);
}
static inline void
xpc_IPI_send_activate(struct xpc_vars *vars)
{
xpc_activate_IRQ_send(vars->amos_page_pa, cnodeid_to_nasid(0),
vars->act_nasid, vars->act_phys_cpuid);
}
static inline void
xpc_IPI_send_activated(struct xpc_partition *part)
{
xpc_activate_IRQ_send(part->remote_amos_page_pa, cnodeid_to_nasid(0),
part->remote_act_nasid, part->remote_act_phys_cpuid);
}
static inline void
xpc_IPI_send_reactivate(struct xpc_partition *part)
{
xpc_activate_IRQ_send(xpc_vars->amos_page_pa, part->reactivate_nasid,
xpc_vars->act_nasid, xpc_vars->act_phys_cpuid);
}
/*
* IPIs associated with SGI_XPC_NOTIFY IRQ.
*/
/*
* Send an IPI to the remote partition that is associated with the
* specified channel.
*/
#define XPC_NOTIFY_IRQ_SEND(_ch, _ipi_f, _irq_f) \
xpc_notify_IRQ_send(_ch, _ipi_f, #_ipi_f, _irq_f)
static inline void
xpc_notify_IRQ_send(struct xpc_channel *ch, u8 ipi_flag, char *ipi_flag_string,
unsigned long *irq_flags)
{
struct xpc_partition *part = &xpc_partitions[ch->partid];
enum xpc_retval ret;
if (likely(part->act_state != XPC_P_DEACTIVATING)) {
ret = xpc_IPI_send(part->remote_IPI_amo_va,
(u64) ipi_flag << (ch->number * 8),
part->remote_IPI_nasid,
part->remote_IPI_phys_cpuid,
SGI_XPC_NOTIFY);
dev_dbg(xpc_chan, "%s sent to partid=%d, channel=%d, ret=%d\n",
ipi_flag_string, ch->partid, ch->number, ret);
if (unlikely(ret != xpcSuccess)) {
if (irq_flags != NULL) {
spin_unlock_irqrestore(&ch->lock, *irq_flags);
}
XPC_DEACTIVATE_PARTITION(part, ret);
if (irq_flags != NULL) {
spin_lock_irqsave(&ch->lock, *irq_flags);
}
}
}
}
/*
* Make it look like the remote partition, which is associated with the
* specified channel, sent us an IPI. This faked IPI will be handled
* by xpc_dropped_IPI_check().
*/
#define XPC_NOTIFY_IRQ_SEND_LOCAL(_ch, _ipi_f) \
xpc_notify_IRQ_send_local(_ch, _ipi_f, #_ipi_f)
static inline void
xpc_notify_IRQ_send_local(struct xpc_channel *ch, u8 ipi_flag,
char *ipi_flag_string)
{
struct xpc_partition *part = &xpc_partitions[ch->partid];
FETCHOP_STORE_OP(TO_AMO((u64) &part->local_IPI_amo_va->variable),
FETCHOP_OR, ((u64) ipi_flag << (ch->number * 8)));
dev_dbg(xpc_chan, "%s sent local from partid=%d, channel=%d\n",
ipi_flag_string, ch->partid, ch->number);
}
/*
* The sending and receiving of IPIs includes the setting of an AMO variable
* to indicate the reason the IPI was sent. The 64-bit variable is divided
* up into eight bytes, ordered from right to left. Byte zero pertains to
* channel 0, byte one to channel 1, and so on. Each byte is described by
* the following IPI flags.
*/
#define XPC_IPI_CLOSEREQUEST 0x01
#define XPC_IPI_CLOSEREPLY 0x02
#define XPC_IPI_OPENREQUEST 0x04
#define XPC_IPI_OPENREPLY 0x08
#define XPC_IPI_MSGREQUEST 0x10
/* given an AMO variable and a channel#, get its associated IPI flags */
#define XPC_GET_IPI_FLAGS(_amo, _c) ((u8) (((_amo) >> ((_c) * 8)) & 0xff))
#define XPC_ANY_OPENCLOSE_IPI_FLAGS_SET(_amo) ((_amo) & 0x0f0f0f0f0f0f0f0f)
#define XPC_ANY_MSG_IPI_FLAGS_SET(_amo) ((_amo) & 0x1010101010101010)
static inline void
xpc_IPI_send_closerequest(struct xpc_channel *ch, unsigned long *irq_flags)
{
struct xpc_openclose_args *args = ch->local_openclose_args;
args->reason = ch->reason;
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_CLOSEREQUEST, irq_flags);
}
static inline void
xpc_IPI_send_closereply(struct xpc_channel *ch, unsigned long *irq_flags)
{
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_CLOSEREPLY, irq_flags);
}
static inline void
xpc_IPI_send_openrequest(struct xpc_channel *ch, unsigned long *irq_flags)
{
struct xpc_openclose_args *args = ch->local_openclose_args;
args->msg_size = ch->msg_size;
args->local_nentries = ch->local_nentries;
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_OPENREQUEST, irq_flags);
}
static inline void
xpc_IPI_send_openreply(struct xpc_channel *ch, unsigned long *irq_flags)
{
struct xpc_openclose_args *args = ch->local_openclose_args;
args->remote_nentries = ch->remote_nentries;
args->local_nentries = ch->local_nentries;
args->local_msgqueue_pa = __pa(ch->local_msgqueue);
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_OPENREPLY, irq_flags);
}
static inline void
xpc_IPI_send_msgrequest(struct xpc_channel *ch)
{
XPC_NOTIFY_IRQ_SEND(ch, XPC_IPI_MSGREQUEST, NULL);
}
static inline void
xpc_IPI_send_local_msgrequest(struct xpc_channel *ch)
{
XPC_NOTIFY_IRQ_SEND_LOCAL(ch, XPC_IPI_MSGREQUEST);
}
/*
* Memory for XPC's AMO variables is allocated by the MSPEC driver. These
* pages are located in the lowest granule. The lowest granule uses 4k pages
* for cached references and an alternate TLB handler to never provide a
* cacheable mapping for the entire region. This will prevent speculative
* reading of cached copies of our lines from being issued which will cause
* a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64
* (XP_MAX_PARTITIONS) AMO variables for message notification (xpc_main.c)
* and an additional 16 AMO variables for partition activation (xpc_hb.c).
*/
static inline AMO_t *
xpc_IPI_init(partid_t partid)
{
AMO_t *part_amo = xpc_vars->amos_page + partid;
xpc_IPI_receive(part_amo);
return part_amo;
}
static inline enum xpc_retval
xpc_map_bte_errors(bte_result_t error)
{
switch (error) {
case BTE_SUCCESS: return xpcSuccess;
case BTEFAIL_DIR: return xpcBteDirectoryError;
case BTEFAIL_POISON: return xpcBtePoisonError;
case BTEFAIL_WERR: return xpcBteWriteError;
case BTEFAIL_ACCESS: return xpcBteAccessError;
case BTEFAIL_PWERR: return xpcBtePWriteError;
case BTEFAIL_PRERR: return xpcBtePReadError;
case BTEFAIL_TOUT: return xpcBteTimeOutError;
case BTEFAIL_XTERR: return xpcBteXtalkError;
case BTEFAIL_NOTAVAIL: return xpcBteNotAvailable;
default: return xpcBteUnmappedError;
}
}
static inline void *
xpc_kmalloc_cacheline_aligned(size_t size, int flags, void **base)
{
/* see if kmalloc will give us cachline aligned memory by default */
*base = kmalloc(size, flags);
if (*base == NULL) {
return NULL;
}
if ((u64) *base == L1_CACHE_ALIGN((u64) *base)) {
return *base;
}
kfree(*base);
/* nope, we'll have to do it ourselves */
*base = kmalloc(size + L1_CACHE_BYTES, flags);
if (*base == NULL) {
return NULL;
}
return (void *) L1_CACHE_ALIGN((u64) *base);
}
/*
* Check to see if there is any channel activity to/from the specified
* partition.
*/
static inline void
xpc_check_for_channel_activity(struct xpc_partition *part)
{
u64 IPI_amo;
unsigned long irq_flags;
IPI_amo = xpc_IPI_receive(part->local_IPI_amo_va);
if (IPI_amo == 0) {
return;
}
spin_lock_irqsave(&part->IPI_lock, irq_flags);
part->local_IPI_amo |= IPI_amo;
spin_unlock_irqrestore(&part->IPI_lock, irq_flags);
dev_dbg(xpc_chan, "received IPI from partid=%d, IPI_amo=0x%lx\n",
XPC_PARTID(part), IPI_amo);
xpc_wakeup_channel_mgr(part);
}
#endif /* _IA64_SN_KERNEL_XPC_H */

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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
*/
/*
* Cross Partition Communication (XPC) partition support.
*
* This is the part of XPC that detects the presence/absence of
* other partitions. It provides a heartbeat and monitors the
* heartbeats of other partitions.
*
*/
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include <linux/cache.h>
#include <linux/mmzone.h>
#include <linux/nodemask.h>
#include <asm/sn/bte.h>
#include <asm/sn/intr.h>
#include <asm/sn/sn_sal.h>
#include <asm/sn/nodepda.h>
#include <asm/sn/addrs.h>
#include "xpc.h"
/* XPC is exiting flag */
int xpc_exiting;
/* SH_IPI_ACCESS shub register value on startup */
static u64 xpc_sh1_IPI_access;
static u64 xpc_sh2_IPI_access0;
static u64 xpc_sh2_IPI_access1;
static u64 xpc_sh2_IPI_access2;
static u64 xpc_sh2_IPI_access3;
/* original protection values for each node */
u64 xpc_prot_vec[MAX_COMPACT_NODES];
/* this partition's reserved page */
struct xpc_rsvd_page *xpc_rsvd_page;
/* this partition's XPC variables (within the reserved page) */
struct xpc_vars *xpc_vars;
struct xpc_vars_part *xpc_vars_part;
/*
* For performance reasons, each entry of xpc_partitions[] is cacheline
* aligned. And xpc_partitions[] is padded with an additional entry at the
* end so that the last legitimate entry doesn't share its cacheline with
* another variable.
*/
struct xpc_partition xpc_partitions[XP_MAX_PARTITIONS + 1];
/*
* Generic buffer used to store a local copy of the remote partitions
* reserved page or XPC variables.
*
* xpc_discovery runs only once and is a seperate thread that is
* very likely going to be processing in parallel with receiving
* interrupts.
*/
char ____cacheline_aligned
xpc_remote_copy_buffer[XPC_RSVD_PAGE_ALIGNED_SIZE];
/* systune related variables */
int xpc_hb_interval = XPC_HB_DEFAULT_INTERVAL;
int xpc_hb_check_interval = XPC_HB_CHECK_DEFAULT_TIMEOUT;
/*
* Given a nasid, get the physical address of the partition's reserved page
* for that nasid. This function returns 0 on any error.
*/
static u64
xpc_get_rsvd_page_pa(int nasid, u64 buf, u64 buf_size)
{
bte_result_t bte_res;
s64 status;
u64 cookie = 0;
u64 rp_pa = nasid; /* seed with nasid */
u64 len = 0;
while (1) {
status = sn_partition_reserved_page_pa(buf, &cookie, &rp_pa,
&len);
dev_dbg(xpc_part, "SAL returned with status=%li, cookie="
"0x%016lx, address=0x%016lx, len=0x%016lx\n",
status, cookie, rp_pa, len);
if (status != SALRET_MORE_PASSES) {
break;
}
if (len > buf_size) {
dev_err(xpc_part, "len (=0x%016lx) > buf_size\n", len);
status = SALRET_ERROR;
break;
}
bte_res = xp_bte_copy(rp_pa, ia64_tpa(buf), buf_size,
(BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bte_res != BTE_SUCCESS) {
dev_dbg(xpc_part, "xp_bte_copy failed %i\n", bte_res);
status = SALRET_ERROR;
break;
}
}
if (status != SALRET_OK) {
rp_pa = 0;
}
dev_dbg(xpc_part, "reserved page at phys address 0x%016lx\n", rp_pa);
return rp_pa;
}
/*
* Fill the partition reserved page with the information needed by
* other partitions to discover we are alive and establish initial
* communications.
*/
struct xpc_rsvd_page *
xpc_rsvd_page_init(void)
{
struct xpc_rsvd_page *rp;
AMO_t *amos_page;
u64 rp_pa, next_cl, nasid_array = 0;
int i, ret;
/* get the local reserved page's address */
rp_pa = xpc_get_rsvd_page_pa(cnodeid_to_nasid(0),
(u64) xpc_remote_copy_buffer,
XPC_RSVD_PAGE_ALIGNED_SIZE);
if (rp_pa == 0) {
dev_err(xpc_part, "SAL failed to locate the reserved page\n");
return NULL;
}
rp = (struct xpc_rsvd_page *) __va(rp_pa);
if (rp->partid != sn_partition_id) {
dev_err(xpc_part, "the reserved page's partid of %d should be "
"%d\n", rp->partid, sn_partition_id);
return NULL;
}
rp->version = XPC_RP_VERSION;
/*
* Place the XPC variables on the cache line following the
* reserved page structure.
*/
next_cl = (u64) rp + XPC_RSVD_PAGE_ALIGNED_SIZE;
xpc_vars = (struct xpc_vars *) next_cl;
/*
* Before clearing xpc_vars, see if a page of AMOs had been previously
* allocated. If not we'll need to allocate one and set permissions
* so that cross-partition AMOs are allowed.
*
* The allocated AMO page needs MCA reporting to remain disabled after
* XPC has unloaded. To make this work, we keep a copy of the pointer
* to this page (i.e., amos_page) in the struct xpc_vars structure,
* which is pointed to by the reserved page, and re-use that saved copy
* on subsequent loads of XPC. This AMO page is never freed, and its
* memory protections are never restricted.
*/
if ((amos_page = xpc_vars->amos_page) == NULL) {
amos_page = (AMO_t *) mspec_kalloc_page(0);
if (amos_page == NULL) {
dev_err(xpc_part, "can't allocate page of AMOs\n");
return NULL;
}
/*
* Open up AMO-R/W to cpu. This is done for Shub 1.1 systems
* when xpc_allow_IPI_ops() is called via xpc_hb_init().
*/
if (!enable_shub_wars_1_1()) {
ret = sn_change_memprotect(ia64_tpa((u64) amos_page),
PAGE_SIZE, SN_MEMPROT_ACCESS_CLASS_1,
&nasid_array);
if (ret != 0) {
dev_err(xpc_part, "can't change memory "
"protections\n");
mspec_kfree_page((unsigned long) amos_page);
return NULL;
}
}
} else if (!IS_AMO_ADDRESS((u64) amos_page)) {
/*
* EFI's XPBOOT can also set amos_page in the reserved page,
* but it happens to leave it as an uncached physical address
* and we need it to be an uncached virtual, so we'll have to
* convert it.
*/
if (!IS_AMO_PHYS_ADDRESS((u64) amos_page)) {
dev_err(xpc_part, "previously used amos_page address "
"is bad = 0x%p\n", (void *) amos_page);
return NULL;
}
amos_page = (AMO_t *) TO_AMO((u64) amos_page);
}
memset(xpc_vars, 0, sizeof(struct xpc_vars));
/*
* Place the XPC per partition specific variables on the cache line
* following the XPC variables structure.
*/
next_cl += XPC_VARS_ALIGNED_SIZE;
memset((u64 *) next_cl, 0, sizeof(struct xpc_vars_part) *
XP_MAX_PARTITIONS);
xpc_vars_part = (struct xpc_vars_part *) next_cl;
xpc_vars->vars_part_pa = __pa(next_cl);
xpc_vars->version = XPC_V_VERSION;
xpc_vars->act_nasid = cpuid_to_nasid(0);
xpc_vars->act_phys_cpuid = cpu_physical_id(0);
xpc_vars->amos_page = amos_page; /* save for next load of XPC */
/*
* Initialize the activation related AMO variables.
*/
xpc_vars->act_amos = xpc_IPI_init(XP_MAX_PARTITIONS);
for (i = 1; i < XP_NASID_MASK_WORDS; i++) {
xpc_IPI_init(i + XP_MAX_PARTITIONS);
}
/* export AMO page's physical address to other partitions */
xpc_vars->amos_page_pa = ia64_tpa((u64) xpc_vars->amos_page);
/*
* This signifies to the remote partition that our reserved
* page is initialized.
*/
(volatile u64) rp->vars_pa = __pa(xpc_vars);
return rp;
}
/*
* Change protections to allow IPI operations (and AMO operations on
* Shub 1.1 systems).
*/
void
xpc_allow_IPI_ops(void)
{
int node;
int nasid;
// >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
if (is_shub2()) {
xpc_sh2_IPI_access0 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS0));
xpc_sh2_IPI_access1 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS1));
xpc_sh2_IPI_access2 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS2));
xpc_sh2_IPI_access3 =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH2_IPI_ACCESS3));
for_each_online_node(node) {
nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
-1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
-1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
-1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
-1UL);
}
} else {
xpc_sh1_IPI_access =
(u64) HUB_L((u64 *) LOCAL_MMR_ADDR(SH1_IPI_ACCESS));
for_each_online_node(node) {
nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
-1UL);
/*
* Since the BIST collides with memory operations on
* SHUB 1.1 sn_change_memprotect() cannot be used.
*/
if (enable_shub_wars_1_1()) {
/* open up everything */
xpc_prot_vec[node] = (u64) HUB_L((u64 *)
GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQLP_MMR_DIR_PRIVEC0));
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQLP_MMR_DIR_PRIVEC0),
-1UL);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQRP_MMR_DIR_PRIVEC0),
-1UL);
}
}
}
}
/*
* Restrict protections to disallow IPI operations (and AMO operations on
* Shub 1.1 systems).
*/
void
xpc_restrict_IPI_ops(void)
{
int node;
int nasid;
// >>> Change SH_IPI_ACCESS code to use SAL call once it is available.
if (is_shub2()) {
for_each_online_node(node) {
nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS0),
xpc_sh2_IPI_access0);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS1),
xpc_sh2_IPI_access1);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS2),
xpc_sh2_IPI_access2);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH2_IPI_ACCESS3),
xpc_sh2_IPI_access3);
}
} else {
for_each_online_node(node) {
nasid = cnodeid_to_nasid(node);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid, SH1_IPI_ACCESS),
xpc_sh1_IPI_access);
if (enable_shub_wars_1_1()) {
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQLP_MMR_DIR_PRIVEC0),
xpc_prot_vec[node]);
HUB_S((u64 *) GLOBAL_MMR_ADDR(nasid,
SH1_MD_DQRP_MMR_DIR_PRIVEC0),
xpc_prot_vec[node]);
}
}
}
}
/*
* At periodic intervals, scan through all active partitions and ensure
* their heartbeat is still active. If not, the partition is deactivated.
*/
void
xpc_check_remote_hb(void)
{
struct xpc_vars *remote_vars;
struct xpc_partition *part;
partid_t partid;
bte_result_t bres;
remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer;
for (partid = 1; partid < XP_MAX_PARTITIONS; partid++) {
if (partid == sn_partition_id) {
continue;
}
part = &xpc_partitions[partid];
if (part->act_state == XPC_P_INACTIVE ||
part->act_state == XPC_P_DEACTIVATING) {
continue;
}
/* pull the remote_hb cache line */
bres = xp_bte_copy(part->remote_vars_pa,
ia64_tpa((u64) remote_vars),
XPC_VARS_ALIGNED_SIZE,
(BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) {
XPC_DEACTIVATE_PARTITION(part,
xpc_map_bte_errors(bres));
continue;
}
dev_dbg(xpc_part, "partid = %d, heartbeat = %ld, last_heartbeat"
" = %ld, kdb_status = %ld, HB_mask = 0x%lx\n", partid,
remote_vars->heartbeat, part->last_heartbeat,
remote_vars->kdb_status,
remote_vars->heartbeating_to_mask);
if (((remote_vars->heartbeat == part->last_heartbeat) &&
(remote_vars->kdb_status == 0)) ||
!XPC_HB_ALLOWED(sn_partition_id, remote_vars)) {
XPC_DEACTIVATE_PARTITION(part, xpcNoHeartbeat);
continue;
}
part->last_heartbeat = remote_vars->heartbeat;
}
}
/*
* Get a copy of the remote partition's rsvd page.
*
* remote_rp points to a buffer that is cacheline aligned for BTE copies and
* assumed to be of size XPC_RSVD_PAGE_ALIGNED_SIZE.
*/
static enum xpc_retval
xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
struct xpc_rsvd_page *remote_rp, u64 *remote_rsvd_page_pa)
{
int bres, i;
/* get the reserved page's physical address */
*remote_rsvd_page_pa = xpc_get_rsvd_page_pa(nasid, (u64) remote_rp,
XPC_RSVD_PAGE_ALIGNED_SIZE);
if (*remote_rsvd_page_pa == 0) {
return xpcNoRsvdPageAddr;
}
/* pull over the reserved page structure */
bres = xp_bte_copy(*remote_rsvd_page_pa, ia64_tpa((u64) remote_rp),
XPC_RSVD_PAGE_ALIGNED_SIZE,
(BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) {
return xpc_map_bte_errors(bres);
}
if (discovered_nasids != NULL) {
for (i = 0; i < XP_NASID_MASK_WORDS; i++) {
discovered_nasids[i] |= remote_rp->part_nasids[i];
}
}
/* check that the partid is for another partition */
if (remote_rp->partid < 1 ||
remote_rp->partid > (XP_MAX_PARTITIONS - 1)) {
return xpcInvalidPartid;
}
if (remote_rp->partid == sn_partition_id) {
return xpcLocalPartid;
}
if (XPC_VERSION_MAJOR(remote_rp->version) !=
XPC_VERSION_MAJOR(XPC_RP_VERSION)) {
return xpcBadVersion;
}
return xpcSuccess;
}
/*
* Get a copy of the remote partition's XPC variables.
*
* remote_vars points to a buffer that is cacheline aligned for BTE copies and
* assumed to be of size XPC_VARS_ALIGNED_SIZE.
*/
static enum xpc_retval
xpc_get_remote_vars(u64 remote_vars_pa, struct xpc_vars *remote_vars)
{
int bres;
if (remote_vars_pa == 0) {
return xpcVarsNotSet;
}
/* pull over the cross partition variables */
bres = xp_bte_copy(remote_vars_pa, ia64_tpa((u64) remote_vars),
XPC_VARS_ALIGNED_SIZE,
(BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bres != BTE_SUCCESS) {
return xpc_map_bte_errors(bres);
}
if (XPC_VERSION_MAJOR(remote_vars->version) !=
XPC_VERSION_MAJOR(XPC_V_VERSION)) {
return xpcBadVersion;
}
return xpcSuccess;
}
/*
* Prior code has determine the nasid which generated an IPI. Inspect
* that nasid to determine if its partition needs to be activated or
* deactivated.
*
* A partition is consider "awaiting activation" if our partition
* flags indicate it is not active and it has a heartbeat. A
* partition is considered "awaiting deactivation" if our partition
* flags indicate it is active but it has no heartbeat or it is not
* sending its heartbeat to us.
*
* To determine the heartbeat, the remote nasid must have a properly
* initialized reserved page.
*/
static void
xpc_identify_act_IRQ_req(int nasid)
{
struct xpc_rsvd_page *remote_rp;
struct xpc_vars *remote_vars;
u64 remote_rsvd_page_pa;
u64 remote_vars_pa;
partid_t partid;
struct xpc_partition *part;
enum xpc_retval ret;
/* pull over the reserved page structure */
remote_rp = (struct xpc_rsvd_page *) xpc_remote_copy_buffer;
ret = xpc_get_remote_rp(nasid, NULL, remote_rp, &remote_rsvd_page_pa);
if (ret != xpcSuccess) {
dev_warn(xpc_part, "unable to get reserved page from nasid %d, "
"which sent interrupt, reason=%d\n", nasid, ret);
return;
}
remote_vars_pa = remote_rp->vars_pa;
partid = remote_rp->partid;
part = &xpc_partitions[partid];
/* pull over the cross partition variables */
remote_vars = (struct xpc_vars *) xpc_remote_copy_buffer;
ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
if (ret != xpcSuccess) {
dev_warn(xpc_part, "unable to get XPC variables from nasid %d, "
"which sent interrupt, reason=%d\n", nasid, ret);
XPC_DEACTIVATE_PARTITION(part, ret);
return;
}
part->act_IRQ_rcvd++;
dev_dbg(xpc_part, "partid for nasid %d is %d; IRQs = %d; HB = "
"%ld:0x%lx\n", (int) nasid, (int) partid, part->act_IRQ_rcvd,
remote_vars->heartbeat, remote_vars->heartbeating_to_mask);
if (part->act_state == XPC_P_INACTIVE) {
part->remote_rp_pa = remote_rsvd_page_pa;
dev_dbg(xpc_part, " remote_rp_pa = 0x%016lx\n",
part->remote_rp_pa);
part->remote_vars_pa = remote_vars_pa;
dev_dbg(xpc_part, " remote_vars_pa = 0x%016lx\n",
part->remote_vars_pa);
part->last_heartbeat = remote_vars->heartbeat;
dev_dbg(xpc_part, " last_heartbeat = 0x%016lx\n",
part->last_heartbeat);
part->remote_vars_part_pa = remote_vars->vars_part_pa;
dev_dbg(xpc_part, " remote_vars_part_pa = 0x%016lx\n",
part->remote_vars_part_pa);
part->remote_act_nasid = remote_vars->act_nasid;
dev_dbg(xpc_part, " remote_act_nasid = 0x%x\n",
part->remote_act_nasid);
part->remote_act_phys_cpuid = remote_vars->act_phys_cpuid;
dev_dbg(xpc_part, " remote_act_phys_cpuid = 0x%x\n",
part->remote_act_phys_cpuid);
part->remote_amos_page_pa = remote_vars->amos_page_pa;
dev_dbg(xpc_part, " remote_amos_page_pa = 0x%lx\n",
part->remote_amos_page_pa);
xpc_activate_partition(part);
} else if (part->remote_amos_page_pa != remote_vars->amos_page_pa ||
!XPC_HB_ALLOWED(sn_partition_id, remote_vars)) {
part->reactivate_nasid = nasid;
XPC_DEACTIVATE_PARTITION(part, xpcReactivating);
}
}
/*
* Loop through the activation AMO variables and process any bits
* which are set. Each bit indicates a nasid sending a partition
* activation or deactivation request.
*
* Return #of IRQs detected.
*/
int
xpc_identify_act_IRQ_sender(void)
{
int word, bit;
u64 nasid_mask;
u64 nasid; /* remote nasid */
int n_IRQs_detected = 0;
AMO_t *act_amos;
struct xpc_rsvd_page *rp = (struct xpc_rsvd_page *) xpc_rsvd_page;
act_amos = xpc_vars->act_amos;
/* scan through act AMO variable looking for non-zero entries */
for (word = 0; word < XP_NASID_MASK_WORDS; word++) {
nasid_mask = xpc_IPI_receive(&act_amos[word]);
if (nasid_mask == 0) {
/* no IRQs from nasids in this variable */
continue;
}
dev_dbg(xpc_part, "AMO[%d] gave back 0x%lx\n", word,
nasid_mask);
/*
* If this nasid has been added to the machine since
* our partition was reset, this will retain the
* remote nasid in our reserved pages machine mask.
* This is used in the event of module reload.
*/
rp->mach_nasids[word] |= nasid_mask;
/* locate the nasid(s) which sent interrupts */
for (bit = 0; bit < (8 * sizeof(u64)); bit++) {
if (nasid_mask & (1UL << bit)) {
n_IRQs_detected++;
nasid = XPC_NASID_FROM_W_B(word, bit);
dev_dbg(xpc_part, "interrupt from nasid %ld\n",
nasid);
xpc_identify_act_IRQ_req(nasid);
}
}
}
return n_IRQs_detected;
}
/*
* Mark specified partition as active.
*/
enum xpc_retval
xpc_mark_partition_active(struct xpc_partition *part)
{
unsigned long irq_flags;
enum xpc_retval ret;
dev_dbg(xpc_part, "setting partition %d to ACTIVE\n", XPC_PARTID(part));
spin_lock_irqsave(&part->act_lock, irq_flags);
if (part->act_state == XPC_P_ACTIVATING) {
part->act_state = XPC_P_ACTIVE;
ret = xpcSuccess;
} else {
DBUG_ON(part->reason == xpcSuccess);
ret = part->reason;
}
spin_unlock_irqrestore(&part->act_lock, irq_flags);
return ret;
}
/*
* Notify XPC that the partition is down.
*/
void
xpc_deactivate_partition(const int line, struct xpc_partition *part,
enum xpc_retval reason)
{
unsigned long irq_flags;
partid_t partid = XPC_PARTID(part);
spin_lock_irqsave(&part->act_lock, irq_flags);
if (part->act_state == XPC_P_INACTIVE) {
XPC_SET_REASON(part, reason, line);
spin_unlock_irqrestore(&part->act_lock, irq_flags);
if (reason == xpcReactivating) {
/* we interrupt ourselves to reactivate partition */
xpc_IPI_send_reactivate(part);
}
return;
}
if (part->act_state == XPC_P_DEACTIVATING) {
if ((part->reason == xpcUnloading && reason != xpcUnloading) ||
reason == xpcReactivating) {
XPC_SET_REASON(part, reason, line);
}
spin_unlock_irqrestore(&part->act_lock, irq_flags);
return;
}
part->act_state = XPC_P_DEACTIVATING;
XPC_SET_REASON(part, reason, line);
spin_unlock_irqrestore(&part->act_lock, irq_flags);
XPC_DISALLOW_HB(partid, xpc_vars);
dev_dbg(xpc_part, "bringing partition %d down, reason = %d\n", partid,
reason);
xpc_partition_down(part, reason);
}
/*
* Mark specified partition as active.
*/
void
xpc_mark_partition_inactive(struct xpc_partition *part)
{
unsigned long irq_flags;
dev_dbg(xpc_part, "setting partition %d to INACTIVE\n",
XPC_PARTID(part));
spin_lock_irqsave(&part->act_lock, irq_flags);
part->act_state = XPC_P_INACTIVE;
spin_unlock_irqrestore(&part->act_lock, irq_flags);
part->remote_rp_pa = 0;
}
/*
* SAL has provided a partition and machine mask. The partition mask
* contains a bit for each even nasid in our partition. The machine
* mask contains a bit for each even nasid in the entire machine.
*
* Using those two bit arrays, we can determine which nasids are
* known in the machine. Each should also have a reserved page
* initialized if they are available for partitioning.
*/
void
xpc_discovery(void)
{
void *remote_rp_base;
struct xpc_rsvd_page *remote_rp;
struct xpc_vars *remote_vars;
u64 remote_rsvd_page_pa;
u64 remote_vars_pa;
int region;
int max_regions;
int nasid;
struct xpc_rsvd_page *rp;
partid_t partid;
struct xpc_partition *part;
u64 *discovered_nasids;
enum xpc_retval ret;
remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RSVD_PAGE_ALIGNED_SIZE,
GFP_KERNEL, &remote_rp_base);
if (remote_rp == NULL) {
return;
}
remote_vars = (struct xpc_vars *) remote_rp;
discovered_nasids = kmalloc(sizeof(u64) * XP_NASID_MASK_WORDS,
GFP_KERNEL);
if (discovered_nasids == NULL) {
kfree(remote_rp_base);
return;
}
memset(discovered_nasids, 0, sizeof(u64) * XP_NASID_MASK_WORDS);
rp = (struct xpc_rsvd_page *) xpc_rsvd_page;
/*
* The term 'region' in this context refers to the minimum number of
* nodes that can comprise an access protection grouping. The access
* protection is in regards to memory, IOI and IPI.
*/
//>>> move the next two #defines into either include/asm-ia64/sn/arch.h or
//>>> include/asm-ia64/sn/addrs.h
#define SH1_MAX_REGIONS 64
#define SH2_MAX_REGIONS 256
max_regions = is_shub2() ? SH2_MAX_REGIONS : SH1_MAX_REGIONS;
for (region = 0; region < max_regions; region++) {
if ((volatile int) xpc_exiting) {
break;
}
dev_dbg(xpc_part, "searching region %d\n", region);
for (nasid = (region * sn_region_size * 2);
nasid < ((region + 1) * sn_region_size * 2);
nasid += 2) {
if ((volatile int) xpc_exiting) {
break;
}
dev_dbg(xpc_part, "checking nasid %d\n", nasid);
if (XPC_NASID_IN_ARRAY(nasid, rp->part_nasids)) {
dev_dbg(xpc_part, "PROM indicates Nasid %d is "
"part of the local partition; skipping "
"region\n", nasid);
break;
}
if (!(XPC_NASID_IN_ARRAY(nasid, rp->mach_nasids))) {
dev_dbg(xpc_part, "PROM indicates Nasid %d was "
"not on Numa-Link network at reset\n",
nasid);
continue;
}
if (XPC_NASID_IN_ARRAY(nasid, discovered_nasids)) {
dev_dbg(xpc_part, "Nasid %d is part of a "
"partition which was previously "
"discovered\n", nasid);
continue;
}
/* pull over the reserved page structure */
ret = xpc_get_remote_rp(nasid, discovered_nasids,
remote_rp, &remote_rsvd_page_pa);
if (ret != xpcSuccess) {
dev_dbg(xpc_part, "unable to get reserved page "
"from nasid %d, reason=%d\n", nasid,
ret);
if (ret == xpcLocalPartid) {
break;
}
continue;
}
remote_vars_pa = remote_rp->vars_pa;
partid = remote_rp->partid;
part = &xpc_partitions[partid];
/* pull over the cross partition variables */
ret = xpc_get_remote_vars(remote_vars_pa, remote_vars);
if (ret != xpcSuccess) {
dev_dbg(xpc_part, "unable to get XPC variables "
"from nasid %d, reason=%d\n", nasid,
ret);
XPC_DEACTIVATE_PARTITION(part, ret);
continue;
}
if (part->act_state != XPC_P_INACTIVE) {
dev_dbg(xpc_part, "partition %d on nasid %d is "
"already activating\n", partid, nasid);
break;
}
/*
* Register the remote partition's AMOs with SAL so it
* can handle and cleanup errors within that address
* range should the remote partition go down. We don't
* unregister this range because it is difficult to
* tell when outstanding writes to the remote partition
* are finished and thus when it is thus safe to
* unregister. This should not result in wasted space
* in the SAL xp_addr_region table because we should
* get the same page for remote_act_amos_pa after
* module reloads and system reboots.
*/
if (sn_register_xp_addr_region(
remote_vars->amos_page_pa,
PAGE_SIZE, 1) < 0) {
dev_dbg(xpc_part, "partition %d failed to "
"register xp_addr region 0x%016lx\n",
partid, remote_vars->amos_page_pa);
XPC_SET_REASON(part, xpcPhysAddrRegFailed,
__LINE__);
break;
}
/*
* The remote nasid is valid and available.
* Send an interrupt to that nasid to notify
* it that we are ready to begin activation.
*/
dev_dbg(xpc_part, "sending an interrupt to AMO 0x%lx, "
"nasid %d, phys_cpuid 0x%x\n",
remote_vars->amos_page_pa,
remote_vars->act_nasid,
remote_vars->act_phys_cpuid);
xpc_IPI_send_activate(remote_vars);
}
}
kfree(discovered_nasids);
kfree(remote_rp_base);
}
/*
* Given a partid, get the nasids owned by that partition from the
* remote partition's reserved page.
*/
enum xpc_retval
xpc_initiate_partid_to_nasids(partid_t partid, void *nasid_mask)
{
struct xpc_partition *part;
u64 part_nasid_pa;
int bte_res;
part = &xpc_partitions[partid];
if (part->remote_rp_pa == 0) {
return xpcPartitionDown;
}
part_nasid_pa = part->remote_rp_pa +
(u64) &((struct xpc_rsvd_page *) 0)->part_nasids;
bte_res = xp_bte_copy(part_nasid_pa, ia64_tpa((u64) nasid_mask),
L1_CACHE_ALIGN(XP_NASID_MASK_BYTES),
(BTE_NOTIFY | BTE_WACQUIRE), NULL);
return xpc_map_bte_errors(bte_res);
}

715
arch/ia64/sn/kernel/xpnet.c Normal file
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@ -0,0 +1,715 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
*/
/*
* Cross Partition Network Interface (XPNET) support
*
* XPNET provides a virtual network layered on top of the Cross
* Partition communication layer.
*
* XPNET provides direct point-to-point and broadcast-like support
* for an ethernet-like device. The ethernet broadcast medium is
* replaced with a point-to-point message structure which passes
* pointers to a DMA-capable block that a remote partition should
* retrieve and pass to the upper level networking layer.
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/smp.h>
#include <linux/string.h>
#include <asm/sn/bte.h>
#include <asm/sn/io.h>
#include <asm/sn/sn_sal.h>
#include <asm/types.h>
#include <asm/atomic.h>
#include <asm/sn/xp.h>
/*
* The message payload transferred by XPC.
*
* buf_pa is the physical address where the DMA should pull from.
*
* NOTE: for performance reasons, buf_pa should _ALWAYS_ begin on a
* cacheline boundary. To accomplish this, we record the number of
* bytes from the beginning of the first cacheline to the first useful
* byte of the skb (leadin_ignore) and the number of bytes from the
* last useful byte of the skb to the end of the last cacheline
* (tailout_ignore).
*
* size is the number of bytes to transfer which includes the skb->len
* (useful bytes of the senders skb) plus the leadin and tailout
*/
struct xpnet_message {
u16 version; /* Version for this message */
u16 embedded_bytes; /* #of bytes embedded in XPC message */
u32 magic; /* Special number indicating this is xpnet */
u64 buf_pa; /* phys address of buffer to retrieve */
u32 size; /* #of bytes in buffer */
u8 leadin_ignore; /* #of bytes to ignore at the beginning */
u8 tailout_ignore; /* #of bytes to ignore at the end */
unsigned char data; /* body of small packets */
};
/*
* Determine the size of our message, the cacheline aligned size,
* and then the number of message will request from XPC.
*
* XPC expects each message to exist in an individual cacheline.
*/
#define XPNET_MSG_SIZE (L1_CACHE_BYTES - XPC_MSG_PAYLOAD_OFFSET)
#define XPNET_MSG_DATA_MAX \
(XPNET_MSG_SIZE - (u64)(&((struct xpnet_message *)0)->data))
#define XPNET_MSG_ALIGNED_SIZE (L1_CACHE_ALIGN(XPNET_MSG_SIZE))
#define XPNET_MSG_NENTRIES (PAGE_SIZE / XPNET_MSG_ALIGNED_SIZE)
#define XPNET_MAX_KTHREADS (XPNET_MSG_NENTRIES + 1)
#define XPNET_MAX_IDLE_KTHREADS (XPNET_MSG_NENTRIES + 1)
/*
* Version number of XPNET implementation. XPNET can always talk to versions
* with same major #, and never talk to versions with a different version.
*/
#define _XPNET_VERSION(_major, _minor) (((_major) << 4) | (_minor))
#define XPNET_VERSION_MAJOR(_v) ((_v) >> 4)
#define XPNET_VERSION_MINOR(_v) ((_v) & 0xf)
#define XPNET_VERSION _XPNET_VERSION(1,0) /* version 1.0 */
#define XPNET_VERSION_EMBED _XPNET_VERSION(1,1) /* version 1.1 */
#define XPNET_MAGIC 0x88786984 /* "XNET" */
#define XPNET_VALID_MSG(_m) \
((XPNET_VERSION_MAJOR(_m->version) == XPNET_VERSION_MAJOR(XPNET_VERSION)) \
&& (msg->magic == XPNET_MAGIC))
#define XPNET_DEVICE_NAME "xp0"
/*
* When messages are queued with xpc_send_notify, a kmalloc'd buffer
* of the following type is passed as a notification cookie. When the
* notification function is called, we use the cookie to decide
* whether all outstanding message sends have completed. The skb can
* then be released.
*/
struct xpnet_pending_msg {
struct list_head free_list;
struct sk_buff *skb;
atomic_t use_count;
};
/* driver specific structure pointed to by the device structure */
struct xpnet_dev_private {
struct net_device_stats stats;
};
struct net_device *xpnet_device;
/*
* When we are notified of other partitions activating, we add them to
* our bitmask of partitions to which we broadcast.
*/
static u64 xpnet_broadcast_partitions;
/* protect above */
static spinlock_t xpnet_broadcast_lock = SPIN_LOCK_UNLOCKED;
/*
* Since the Block Transfer Engine (BTE) is being used for the transfer
* and it relies upon cache-line size transfers, we need to reserve at
* least one cache-line for head and tail alignment. The BTE is
* limited to 8MB transfers.
*
* Testing has shown that changing MTU to greater than 64KB has no effect
* on TCP as the two sides negotiate a Max Segment Size that is limited
* to 64K. Other protocols May use packets greater than this, but for
* now, the default is 64KB.
*/
#define XPNET_MAX_MTU (0x800000UL - L1_CACHE_BYTES)
/* 32KB has been determined to be the ideal */
#define XPNET_DEF_MTU (0x8000UL)
/*
* The partition id is encapsulated in the MAC address. The following
* define locates the octet the partid is in.
*/
#define XPNET_PARTID_OCTET 1
#define XPNET_LICENSE_OCTET 2
/*
* Define the XPNET debug device structure that is to be used with dev_dbg(),
* dev_err(), dev_warn(), and dev_info().
*/
struct device_driver xpnet_dbg_name = {
.name = "xpnet"
};
struct device xpnet_dbg_subname = {
.bus_id = {0}, /* set to "" */
.driver = &xpnet_dbg_name
};
struct device *xpnet = &xpnet_dbg_subname;
/*
* Packet was recevied by XPC and forwarded to us.
*/
static void
xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
{
struct sk_buff *skb;
bte_result_t bret;
struct xpnet_dev_private *priv =
(struct xpnet_dev_private *) xpnet_device->priv;
if (!XPNET_VALID_MSG(msg)) {
/*
* Packet with a different XPC version. Ignore.
*/
xpc_received(partid, channel, (void *) msg);
priv->stats.rx_errors++;
return;
}
dev_dbg(xpnet, "received 0x%lx, %d, %d, %d\n", msg->buf_pa, msg->size,
msg->leadin_ignore, msg->tailout_ignore);
/* reserve an extra cache line */
skb = dev_alloc_skb(msg->size + L1_CACHE_BYTES);
if (!skb) {
dev_err(xpnet, "failed on dev_alloc_skb(%d)\n",
msg->size + L1_CACHE_BYTES);
xpc_received(partid, channel, (void *) msg);
priv->stats.rx_errors++;
return;
}
/*
* The allocated skb has some reserved space.
* In order to use bte_copy, we need to get the
* skb->data pointer moved forward.
*/
skb_reserve(skb, (L1_CACHE_BYTES - ((u64)skb->data &
(L1_CACHE_BYTES - 1)) +
msg->leadin_ignore));
/*
* Update the tail pointer to indicate data actually
* transferred.
*/
skb_put(skb, (msg->size - msg->leadin_ignore - msg->tailout_ignore));
/*
* Move the data over from the the other side.
*/
if ((XPNET_VERSION_MINOR(msg->version) == 1) &&
(msg->embedded_bytes != 0)) {
dev_dbg(xpnet, "copying embedded message. memcpy(0x%p, 0x%p, "
"%lu)\n", skb->data, &msg->data,
(size_t) msg->embedded_bytes);
memcpy(skb->data, &msg->data, (size_t) msg->embedded_bytes);
} else {
dev_dbg(xpnet, "transferring buffer to the skb->data area;\n\t"
"bte_copy(0x%p, 0x%p, %hu)\n", (void *)msg->buf_pa,
(void *)__pa((u64)skb->data & ~(L1_CACHE_BYTES - 1)),
msg->size);
bret = bte_copy(msg->buf_pa,
__pa((u64)skb->data & ~(L1_CACHE_BYTES - 1)),
msg->size, (BTE_NOTIFY | BTE_WACQUIRE), NULL);
if (bret != BTE_SUCCESS) {
// >>> Need better way of cleaning skb. Currently skb
// >>> appears in_use and we can't just call
// >>> dev_kfree_skb.
dev_err(xpnet, "bte_copy(0x%p, 0x%p, 0x%hx) returned "
"error=0x%x\n", (void *)msg->buf_pa,
(void *)__pa((u64)skb->data &
~(L1_CACHE_BYTES - 1)),
msg->size, bret);
xpc_received(partid, channel, (void *) msg);
priv->stats.rx_errors++;
return;
}
}
dev_dbg(xpnet, "<skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
"skb->end=0x%p skb->len=%d\n", (void *) skb->head,
(void *) skb->data, (void *) skb->tail, (void *) skb->end,
skb->len);
skb->dev = xpnet_device;
skb->protocol = eth_type_trans(skb, xpnet_device);
skb->ip_summed = CHECKSUM_UNNECESSARY;
dev_dbg(xpnet, "passing skb to network layer; \n\tskb->head=0x%p "
"skb->data=0x%p skb->tail=0x%p skb->end=0x%p skb->len=%d\n",
(void *) skb->head, (void *) skb->data, (void *) skb->tail,
(void *) skb->end, skb->len);
xpnet_device->last_rx = jiffies;
priv->stats.rx_packets++;
priv->stats.rx_bytes += skb->len + ETH_HLEN;
netif_rx_ni(skb);
xpc_received(partid, channel, (void *) msg);
}
/*
* This is the handler which XPC calls during any sort of change in
* state or message reception on a connection.
*/
static void
xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
void *data, void *key)
{
long bp;
DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
DBUG_ON(channel != XPC_NET_CHANNEL);
switch(reason) {
case xpcMsgReceived: /* message received */
DBUG_ON(data == NULL);
xpnet_receive(partid, channel, (struct xpnet_message *) data);
break;
case xpcConnected: /* connection completed to a partition */
spin_lock_bh(&xpnet_broadcast_lock);
xpnet_broadcast_partitions |= 1UL << (partid -1 );
bp = xpnet_broadcast_partitions;
spin_unlock_bh(&xpnet_broadcast_lock);
netif_carrier_on(xpnet_device);
dev_dbg(xpnet, "%s connection created to partition %d; "
"xpnet_broadcast_partitions=0x%lx\n",
xpnet_device->name, partid, bp);
break;
default:
spin_lock_bh(&xpnet_broadcast_lock);
xpnet_broadcast_partitions &= ~(1UL << (partid -1 ));
bp = xpnet_broadcast_partitions;
spin_unlock_bh(&xpnet_broadcast_lock);
if (bp == 0) {
netif_carrier_off(xpnet_device);
}
dev_dbg(xpnet, "%s disconnected from partition %d; "
"xpnet_broadcast_partitions=0x%lx\n",
xpnet_device->name, partid, bp);
break;
}
}
static int
xpnet_dev_open(struct net_device *dev)
{
enum xpc_retval ret;
dev_dbg(xpnet, "calling xpc_connect(%d, 0x%p, NULL, %ld, %ld, %d, "
"%d)\n", XPC_NET_CHANNEL, xpnet_connection_activity,
XPNET_MSG_SIZE, XPNET_MSG_NENTRIES, XPNET_MAX_KTHREADS,
XPNET_MAX_IDLE_KTHREADS);
ret = xpc_connect(XPC_NET_CHANNEL, xpnet_connection_activity, NULL,
XPNET_MSG_SIZE, XPNET_MSG_NENTRIES,
XPNET_MAX_KTHREADS, XPNET_MAX_IDLE_KTHREADS);
if (ret != xpcSuccess) {
dev_err(xpnet, "ifconfig up of %s failed on XPC connect, "
"ret=%d\n", dev->name, ret);
return -ENOMEM;
}
dev_dbg(xpnet, "ifconfig up of %s; XPC connected\n", dev->name);
return 0;
}
static int
xpnet_dev_stop(struct net_device *dev)
{
xpc_disconnect(XPC_NET_CHANNEL);
dev_dbg(xpnet, "ifconfig down of %s; XPC disconnected\n", dev->name);
return 0;
}
static int
xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
{
/* 68 comes from min TCP+IP+MAC header */
if ((new_mtu < 68) || (new_mtu > XPNET_MAX_MTU)) {
dev_err(xpnet, "ifconfig %s mtu %d failed; value must be "
"between 68 and %ld\n", dev->name, new_mtu,
XPNET_MAX_MTU);
return -EINVAL;
}
dev->mtu = new_mtu;
dev_dbg(xpnet, "ifconfig %s mtu set to %d\n", dev->name, new_mtu);
return 0;
}
/*
* Required for the net_device structure.
*/
static int
xpnet_dev_set_config(struct net_device *dev, struct ifmap *new_map)
{
return 0;
}
/*
* Return statistics to the caller.
*/
static struct net_device_stats *
xpnet_dev_get_stats(struct net_device *dev)
{
struct xpnet_dev_private *priv;
priv = (struct xpnet_dev_private *) dev->priv;
return &priv->stats;
}
/*
* Notification that the other end has received the message and
* DMA'd the skb information. At this point, they are done with
* our side. When all recipients are done processing, we
* release the skb and then release our pending message structure.
*/
static void
xpnet_send_completed(enum xpc_retval reason, partid_t partid, int channel,
void *__qm)
{
struct xpnet_pending_msg *queued_msg =
(struct xpnet_pending_msg *) __qm;
DBUG_ON(queued_msg == NULL);
dev_dbg(xpnet, "message to %d notified with reason %d\n",
partid, reason);
if (atomic_dec_return(&queued_msg->use_count) == 0) {
dev_dbg(xpnet, "all acks for skb->head=-x%p\n",
(void *) queued_msg->skb->head);
dev_kfree_skb_any(queued_msg->skb);
kfree(queued_msg);
}
}
/*
* Network layer has formatted a packet (skb) and is ready to place it
* "on the wire". Prepare and send an xpnet_message to all partitions
* which have connected with us and are targets of this packet.
*
* MAC-NOTE: For the XPNET driver, the MAC address contains the
* destination partition_id. If the destination partition id word
* is 0xff, this packet is to broadcast to all partitions.
*/
static int
xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct xpnet_pending_msg *queued_msg;
enum xpc_retval ret;
struct xpnet_message *msg;
u64 start_addr, end_addr;
long dp;
u8 second_mac_octet;
partid_t dest_partid;
struct xpnet_dev_private *priv;
u16 embedded_bytes;
priv = (struct xpnet_dev_private *) dev->priv;
dev_dbg(xpnet, ">skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
"skb->end=0x%p skb->len=%d\n", (void *) skb->head,
(void *) skb->data, (void *) skb->tail, (void *) skb->end,
skb->len);
/*
* The xpnet_pending_msg tracks how many outstanding
* xpc_send_notifies are relying on this skb. When none
* remain, release the skb.
*/
queued_msg = kmalloc(sizeof(struct xpnet_pending_msg), GFP_ATOMIC);
if (queued_msg == NULL) {
dev_warn(xpnet, "failed to kmalloc %ld bytes; dropping "
"packet\n", sizeof(struct xpnet_pending_msg));
priv->stats.tx_errors++;
return -ENOMEM;
}
/* get the beginning of the first cacheline and end of last */
start_addr = ((u64) skb->data & ~(L1_CACHE_BYTES - 1));
end_addr = L1_CACHE_ALIGN((u64) skb->tail);
/* calculate how many bytes to embed in the XPC message */
embedded_bytes = 0;
if (unlikely(skb->len <= XPNET_MSG_DATA_MAX)) {
/* skb->data does fit so embed */
embedded_bytes = skb->len;
}
/*
* Since the send occurs asynchronously, we set the count to one
* and begin sending. Any sends that happen to complete before
* we are done sending will not free the skb. We will be left
* with that task during exit. This also handles the case of
* a packet destined for a partition which is no longer up.
*/
atomic_set(&queued_msg->use_count, 1);
queued_msg->skb = skb;
second_mac_octet = skb->data[XPNET_PARTID_OCTET];
if (second_mac_octet == 0xff) {
/* we are being asked to broadcast to all partitions */
dp = xpnet_broadcast_partitions;
} else if (second_mac_octet != 0) {
dp = xpnet_broadcast_partitions &
(1UL << (second_mac_octet - 1));
} else {
/* 0 is an invalid partid. Ignore */
dp = 0;
}
dev_dbg(xpnet, "destination Partitions mask (dp) = 0x%lx\n", dp);
/*
* If we wanted to allow promiscous mode to work like an
* unswitched network, this would be a good point to OR in a
* mask of partitions which should be receiving all packets.
*/
/*
* Main send loop.
*/
for (dest_partid = 1; dp && dest_partid < XP_MAX_PARTITIONS;
dest_partid++) {
if (!(dp & (1UL << (dest_partid - 1)))) {
/* not destined for this partition */
continue;
}
/* remove this partition from the destinations mask */
dp &= ~(1UL << (dest_partid - 1));
/* found a partition to send to */
ret = xpc_allocate(dest_partid, XPC_NET_CHANNEL,
XPC_NOWAIT, (void **)&msg);
if (unlikely(ret != xpcSuccess)) {
continue;
}
msg->embedded_bytes = embedded_bytes;
if (unlikely(embedded_bytes != 0)) {
msg->version = XPNET_VERSION_EMBED;
dev_dbg(xpnet, "calling memcpy(0x%p, 0x%p, 0x%lx)\n",
&msg->data, skb->data, (size_t) embedded_bytes);
memcpy(&msg->data, skb->data, (size_t) embedded_bytes);
} else {
msg->version = XPNET_VERSION;
}
msg->magic = XPNET_MAGIC;
msg->size = end_addr - start_addr;
msg->leadin_ignore = (u64) skb->data - start_addr;
msg->tailout_ignore = end_addr - (u64) skb->tail;
msg->buf_pa = __pa(start_addr);
dev_dbg(xpnet, "sending XPC message to %d:%d\nmsg->buf_pa="
"0x%lx, msg->size=%u, msg->leadin_ignore=%u, "
"msg->tailout_ignore=%u\n", dest_partid,
XPC_NET_CHANNEL, msg->buf_pa, msg->size,
msg->leadin_ignore, msg->tailout_ignore);
atomic_inc(&queued_msg->use_count);
ret = xpc_send_notify(dest_partid, XPC_NET_CHANNEL, msg,
xpnet_send_completed, queued_msg);
if (unlikely(ret != xpcSuccess)) {
atomic_dec(&queued_msg->use_count);
continue;
}
}
if (atomic_dec_return(&queued_msg->use_count) == 0) {
dev_dbg(xpnet, "no partitions to receive packet destined for "
"%d\n", dest_partid);
dev_kfree_skb(skb);
kfree(queued_msg);
}
priv->stats.tx_packets++;
priv->stats.tx_bytes += skb->len;
return 0;
}
/*
* Deal with transmit timeouts coming from the network layer.
*/
static void
xpnet_dev_tx_timeout (struct net_device *dev)
{
struct xpnet_dev_private *priv;
priv = (struct xpnet_dev_private *) dev->priv;
priv->stats.tx_errors++;
return;
}
static int __init
xpnet_init(void)
{
int i;
u32 license_num;
int result = -ENOMEM;
dev_info(xpnet, "registering network device %s\n", XPNET_DEVICE_NAME);
/*
* use ether_setup() to init the majority of our device
* structure and then override the necessary pieces.
*/
xpnet_device = alloc_netdev(sizeof(struct xpnet_dev_private),
XPNET_DEVICE_NAME, ether_setup);
if (xpnet_device == NULL) {
return -ENOMEM;
}
netif_carrier_off(xpnet_device);
xpnet_device->mtu = XPNET_DEF_MTU;
xpnet_device->change_mtu = xpnet_dev_change_mtu;
xpnet_device->open = xpnet_dev_open;
xpnet_device->get_stats = xpnet_dev_get_stats;
xpnet_device->stop = xpnet_dev_stop;
xpnet_device->hard_start_xmit = xpnet_dev_hard_start_xmit;
xpnet_device->tx_timeout = xpnet_dev_tx_timeout;
xpnet_device->set_config = xpnet_dev_set_config;
/*
* Multicast assumes the LSB of the first octet is set for multicast
* MAC addresses. We chose the first octet of the MAC to be unlikely
* to collide with any vendor's officially issued MAC.
*/
xpnet_device->dev_addr[0] = 0xfe;
xpnet_device->dev_addr[XPNET_PARTID_OCTET] = sn_partition_id;
license_num = sn_partition_serial_number_val();
for (i = 3; i >= 0; i--) {
xpnet_device->dev_addr[XPNET_LICENSE_OCTET + i] =
license_num & 0xff;
license_num = license_num >> 8;
}
/*
* ether_setup() sets this to a multicast device. We are
* really not supporting multicast at this time.
*/
xpnet_device->flags &= ~IFF_MULTICAST;
/*
* No need to checksum as it is a DMA transfer. The BTE will
* report an error if the data is not retrievable and the
* packet will be dropped.
*/
xpnet_device->features = NETIF_F_NO_CSUM;
result = register_netdev(xpnet_device);
if (result != 0) {
free_netdev(xpnet_device);
}
return result;
}
module_init(xpnet_init);
static void __exit
xpnet_exit(void)
{
dev_info(xpnet, "unregistering network device %s\n",
xpnet_device[0].name);
unregister_netdev(xpnet_device);
free_netdev(xpnet_device);
}
module_exit(xpnet_exit);
MODULE_AUTHOR("Silicon Graphics, Inc.");
MODULE_DESCRIPTION("Cross Partition Network adapter (XPNET)");
MODULE_LICENSE("GPL");

2
arch/ia64/sn/pci/pcibr/pcibr_dma.c
View File

@ -301,7 +301,7 @@ void sn_dma_flush(uint64_t addr)
spin_lock_irqsave(&((struct sn_flush_device_list *)p)->
sfdl_flush_lock, flags);
p->sfdl_flush_value = 0;
*p->sfdl_flush_addr = 0;
/* force an interrupt. */
*(volatile uint32_t *)(p->sfdl_force_int_addr) = 1;

2
arch/ia64/sn/pci/tioca_provider.c
View File

@ -431,7 +431,7 @@ tioca_dma_mapped(struct pci_dev *pdev, uint64_t paddr, size_t req_size)
ca_dmamap->cad_dma_addr = bus_addr;
ca_dmamap->cad_gart_size = entries;
ca_dmamap->cad_gart_entry = entry;
list_add(&ca_dmamap->cad_list, &tioca_kern->ca_list);
list_add(&ca_dmamap->cad_list, &tioca_kern->ca_dmamaps);
if (xio_addr % ps) {
tioca_kern->ca_pcigart[entry] = tioca_paddr_to_gart(xio_addr);

5
arch/m68knommu/Kconfig
View File

@ -534,6 +534,11 @@ endchoice
endmenu
config ISA_DMA_API
bool
depends on !M5272
default y
menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
config PCI

4
arch/mips/Kconfig
View File

@ -1656,3 +1656,7 @@ config GENERIC_HARDIRQS
config GENERIC_IRQ_PROBE
bool
default y
config ISA_DMA_API
bool
default y

4
arch/parisc/Kconfig
View File

@ -45,6 +45,10 @@ config GENERIC_IRQ_PROBE
config PM
bool
config ISA_DMA_API
bool
default y
source "init/Kconfig"

4
arch/ppc/Kconfig
View File

@ -1079,6 +1079,10 @@ source kernel/power/Kconfig
endmenu
config ISA_DMA_API
bool
default y
menu "Bus options"
config ISA

3
arch/ppc64/Kconfig
View File

@ -293,6 +293,9 @@ config SECCOMP
endmenu
config ISA_DMA_API
bool
default y
menu "General setup"

7
arch/ppc64/Makefile
View File

@ -56,12 +56,19 @@ LDFLAGS_vmlinux := -Bstatic -e $(KERNELLOAD) -Ttext $(KERNELLOAD)
CFLAGS += -msoft-float -pipe -mminimal-toc -mtraceback=none \
-mcall-aixdesc
GCC_VERSION := $(call cc-version)
GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi ;)
ifeq ($(CONFIG_POWER4_ONLY),y)
ifeq ($(CONFIG_ALTIVEC),y)
ifeq ($(GCC_BROKEN_VEC),y)
CFLAGS += $(call cc-option,-mcpu=970)
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mtune=power4)
endif

4
arch/sh/Kconfig
View File

@ -693,6 +693,10 @@ config RTC_9701JE
endmenu
config ISA_DMA_API
bool
depends on MPC1211
default y
menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"

28
arch/sparc/prom/memory.c
View File

@ -47,9 +47,9 @@ prom_sortmemlist(struct linux_mlist_v0 *thislist)
char *tmpaddr;
char *lowest;
for(i=0; thislist[i].theres_more != 0; i++) {
for(i=0; thislist[i].theres_more; i++) {
lowest = thislist[i].start_adr;
for(mitr = i+1; thislist[mitr-1].theres_more != 0; mitr++)
for(mitr = i+1; thislist[mitr-1].theres_more; mitr++)
if(thislist[mitr].start_adr < lowest) {
lowest = thislist[mitr].start_adr;
swapi = mitr;
@ -85,7 +85,7 @@ void __init prom_meminit(void)
prom_phys_total[iter].num_bytes = mptr->num_bytes;
prom_phys_total[iter].theres_more = &prom_phys_total[iter+1];
}
prom_phys_total[iter-1].theres_more = 0x0;
prom_phys_total[iter-1].theres_more = NULL;
/* Second, the total prom taken descriptors. */
for(mptr = (*(romvec->pv_v0mem.v0_prommap)), iter=0;
mptr; mptr=mptr->theres_more, iter++) {
@ -93,7 +93,7 @@ void __init prom_meminit(void)
prom_prom_taken[iter].num_bytes = mptr->num_bytes;
prom_prom_taken[iter].theres_more = &prom_prom_taken[iter+1];
}
prom_prom_taken[iter-1].theres_more = 0x0;
prom_prom_taken[iter-1].theres_more = NULL;
/* Last, the available physical descriptors. */
for(mptr = (*(romvec->pv_v0mem.v0_available)), iter=0;
mptr; mptr=mptr->theres_more, iter++) {
@ -101,7 +101,7 @@ void __init prom_meminit(void)
prom_phys_avail[iter].num_bytes = mptr->num_bytes;
prom_phys_avail[iter].theres_more = &prom_phys_avail[iter+1];
}
prom_phys_avail[iter-1].theres_more = 0x0;
prom_phys_avail[iter-1].theres_more = NULL;
/* Sort all the lists. */
prom_sortmemlist(prom_phys_total);
prom_sortmemlist(prom_prom_taken);
@ -124,7 +124,7 @@ void __init prom_meminit(void)
prom_phys_avail[iter].theres_more =
&prom_phys_avail[iter+1];
}
prom_phys_avail[iter-1].theres_more = 0x0;
prom_phys_avail[iter-1].theres_more = NULL;
num_regs = prom_getproperty(node, "reg",
(char *) prom_reg_memlist,
@ -138,7 +138,7 @@ void __init prom_meminit(void)
prom_phys_total[iter].theres_more =
&prom_phys_total[iter+1];
}
prom_phys_total[iter-1].theres_more = 0x0;
prom_phys_total[iter-1].theres_more = NULL;
node = prom_getchild(prom_root_node);
node = prom_searchsiblings(node, "virtual-memory");
@ -158,7 +158,7 @@ void __init prom_meminit(void)
prom_prom_taken[iter].theres_more =
&prom_prom_taken[iter+1];
}
prom_prom_taken[iter-1].theres_more = 0x0;
prom_prom_taken[iter-1].theres_more = NULL;
prom_sortmemlist(prom_prom_taken);
@ -182,15 +182,15 @@ void __init prom_meminit(void)
case PROM_SUN4:
#ifdef CONFIG_SUN4
/* how simple :) */
prom_phys_total[0].start_adr = 0x0;
prom_phys_total[0].start_adr = NULL;
prom_phys_total[0].num_bytes = *(sun4_romvec->memorysize);
prom_phys_total[0].theres_more = 0x0;
prom_prom_taken[0].start_adr = 0x0;
prom_phys_total[0].theres_more = NULL;
prom_prom_taken[0].start_adr = NULL;
prom_prom_taken[0].num_bytes = 0x0;
prom_prom_taken[0].theres_more = 0x0;
prom_phys_avail[0].start_adr = 0x0;
prom_prom_taken[0].theres_more = NULL;
prom_phys_avail[0].start_adr = NULL;
prom_phys_avail[0].num_bytes = *(sun4_romvec->memoryavail);
prom_phys_avail[0].theres_more = 0x0;
prom_phys_avail[0].theres_more = NULL;
#endif
break;

2
arch/sparc/prom/sun4prom.c
View File

@ -151,7 +151,7 @@ struct linux_romvec * __init sun4_prom_init(void)
* have more time, we can teach the penguin to say "By your
* command" or "Activating turbo boost, Michael". :-)
*/
sun4_romvec->setLEDs(0x0);
sun4_romvec->setLEDs(NULL);
printk("PROMLIB: Old Sun4 boot PROM monitor %s, romvec version %d\n",
sun4_romvec->monid,

6
arch/sparc64/kernel/irq.c
View File

@ -756,7 +756,7 @@ void handler_irq(int irq, struct pt_regs *regs)
clear_softint(clr_mask);
}
#else
int should_forward = 1;
int should_forward = 0;
clear_softint(1 << irq);
#endif
@ -1007,10 +1007,10 @@ static int retarget_one_irq(struct irqaction *p, int goal_cpu)
}
upa_writel(tid | IMAP_VALID, imap);
while (!cpu_online(goal_cpu)) {
do {
if (++goal_cpu >= NR_CPUS)
goal_cpu = 0;
}
} while (!cpu_online(goal_cpu));
return goal_cpu;
}

5
arch/x86_64/Kconfig
View File

@ -379,6 +379,11 @@ config GENERIC_IRQ_PROBE
bool
default y
# we have no ISA slots, but we do have ISA-style DMA.
config ISA_DMA_API
bool
default y
menu "Power management options"
source kernel/power/Kconfig

5
drivers/base/bus.c
View File

@ -405,9 +405,8 @@ void device_release_driver(struct device * dev)
static void driver_detach(struct device_driver * drv)
{
struct list_head * entry, * next;
list_for_each_safe(entry, next, &drv->devices) {
struct device * dev = container_of(entry, struct device, driver_list);
while (!list_empty(&drv->devices)) {
struct device * dev = container_of(drv->devices.next, struct device, driver_list);
device_release_driver(dev);
}
}

2
drivers/base/core.c
View File

@ -139,7 +139,7 @@ static int dev_hotplug(struct kset *kset, struct kobject *kobj, char **envp,
buffer = &buffer[length];
buffer_size -= length;
if (dev->bus->hotplug) {
if (dev->bus && dev->bus->hotplug) {
/* have the bus specific function add its stuff */
retval = dev->bus->hotplug (dev, envp, num_envp, buffer, buffer_size);
if (retval) {

2
drivers/block/Kconfig
View File

@ -105,7 +105,7 @@ config ATARI_SLM
config BLK_DEV_XD
tristate "XT hard disk support"
depends on ISA
depends on ISA && ISA_DMA_API
help
Very old 8 bit hard disk controllers used in the IBM XT computer
will be supported if you say Y here.

2
drivers/block/aoe/aoe.h
View File

@ -1,5 +1,5 @@
/* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */
#define VERSION "6"
#define VERSION "10"
#define AOE_MAJOR 152
#define DEVICE_NAME "aoe"

13
drivers/block/aoe/aoeblk.c
View File

@ -37,6 +37,13 @@ static ssize_t aoedisk_show_netif(struct gendisk * disk, char *page)
return snprintf(page, PAGE_SIZE, "%s\n", d->ifp->name);
}
/* firmware version */
static ssize_t aoedisk_show_fwver(struct gendisk * disk, char *page)
{
struct aoedev *d = disk->private_data;
return snprintf(page, PAGE_SIZE, "0x%04x\n", (unsigned int) d->fw_ver);
}
static struct disk_attribute disk_attr_state = {
.attr = {.name = "state", .mode = S_IRUGO },
@ -50,6 +57,10 @@ static struct disk_attribute disk_attr_netif = {
.attr = {.name = "netif", .mode = S_IRUGO },
.show = aoedisk_show_netif
};
static struct disk_attribute disk_attr_fwver = {
.attr = {.name = "firmware-version", .mode = S_IRUGO },
.show = aoedisk_show_fwver
};
static void
aoedisk_add_sysfs(struct aoedev *d)
@ -57,6 +68,7 @@ aoedisk_add_sysfs(struct aoedev *d)
sysfs_create_file(&d->gd->kobj, &disk_attr_state.attr);
sysfs_create_file(&d->gd->kobj, &disk_attr_mac.attr);
sysfs_create_file(&d->gd->kobj, &disk_attr_netif.attr);
sysfs_create_file(&d->gd->kobj, &disk_attr_fwver.attr);
}
void
aoedisk_rm_sysfs(struct aoedev *d)
@ -64,6 +76,7 @@ aoedisk_rm_sysfs(struct aoedev *d)
sysfs_remove_link(&d->gd->kobj, "state");
sysfs_remove_link(&d->gd->kobj, "mac");
sysfs_remove_link(&d->gd->kobj, "netif");
sysfs_remove_link(&d->gd->kobj, "firmware-version");
}
static int

11
drivers/block/aoe/aoedev.c
View File

@ -109,25 +109,22 @@ aoedev_set(ulong sysminor, unsigned char *addr, struct net_device *ifp, ulong bu
spin_lock_irqsave(&devlist_lock, flags);
for (d=devlist; d; d=d->next)
if (d->sysminor == sysminor
|| memcmp(d->addr, addr, sizeof d->addr) == 0)
if (d->sysminor == sysminor)
break;
if (d == NULL && (d = aoedev_newdev(bufcnt)) == NULL) {
spin_unlock_irqrestore(&devlist_lock, flags);
printk(KERN_INFO "aoe: aoedev_set: aoedev_newdev failure.\n");
return NULL;
}
} /* if newdev, (d->flags & DEVFL_UP) == 0 for below */
spin_unlock_irqrestore(&devlist_lock, flags);
spin_lock_irqsave(&d->lock, flags);
d->ifp = ifp;
if (d->sysminor != sysminor
|| (d->flags & DEVFL_UP) == 0) {
memcpy(d->addr, addr, sizeof d->addr);
if ((d->flags & DEVFL_UP) == 0) {
aoedev_downdev(d); /* flushes outstanding frames */
memcpy(d->addr, addr, sizeof d->addr);
d->sysminor = sysminor;
d->aoemajor = AOEMAJOR(sysminor);
d->aoeminor = AOEMINOR(sysminor);

17
drivers/block/aoe/aoenet.c
View File

@ -7,6 +7,7 @@
#include <linux/hdreg.h>
#include <linux/blkdev.h>
#include <linux/netdevice.h>
#include <linux/moduleparam.h>
#include "aoe.h"
#define NECODES 5
@ -26,6 +27,19 @@ enum {
};
static char aoe_iflist[IFLISTSZ];
module_param_string(aoe_iflist, aoe_iflist, IFLISTSZ, 0600);
MODULE_PARM_DESC(aoe_iflist, "aoe_iflist=\"dev1 [dev2 ...]\"\n");
#ifndef MODULE
static int __init aoe_iflist_setup(char *str)
{
strncpy(aoe_iflist, str, IFLISTSZ);
aoe_iflist[IFLISTSZ - 1] = '\0';
return 1;
}
__setup("aoe_iflist=", aoe_iflist_setup);
#endif
int
is_aoe_netif(struct net_device *ifp)
@ -36,7 +50,8 @@ is_aoe_netif(struct net_device *ifp)
if (aoe_iflist[0] == '\0')
return 1;
for (p = aoe_iflist; *p; p = q + strspn(q, WHITESPACE)) {
p = aoe_iflist + strspn(aoe_iflist, WHITESPACE);
for (; *p; p = q + strspn(q, WHITESPACE)) {
q = p + strcspn(p, WHITESPACE);
if (q != p)
len = q - p;

6
drivers/char/Kconfig
View File

@ -153,7 +153,7 @@ config DIGIEPCA
config ESPSERIAL
tristate "Hayes ESP serial port support"
depends on SERIAL_NONSTANDARD && ISA && BROKEN_ON_SMP
depends on SERIAL_NONSTANDARD && ISA && BROKEN_ON_SMP && ISA_DMA_API
help
This is a driver which supports Hayes ESP serial ports. Both single
port cards and multiport cards are supported. Make sure to read
@ -195,7 +195,7 @@ config ISI
config SYNCLINK
tristate "Microgate SyncLink card support"
depends on SERIAL_NONSTANDARD && PCI
depends on SERIAL_NONSTANDARD && PCI && ISA_DMA_API
help
Provides support for the SyncLink ISA and PCI multiprotocol serial
adapters. These adapters support asynchronous and HDLC bit
@ -408,7 +408,7 @@ config SGI_TIOCX
config SGI_MBCS
tristate "SGI FPGA Core Services driver support"
depends on (IA64_SGI_SN2 || IA64_GENERIC)
depends on SGI_TIOCX
help
If you have an SGI Altix with an attached SABrick
say Y or M here, otherwise say N.

32
drivers/char/ipmi/ipmi_si_intf.c
View File

@ -1617,15 +1617,15 @@ typedef struct dmi_header
u16 handle;
} dmi_header_t;
static int decode_dmi(dmi_header_t *dm, int intf_num)
static int decode_dmi(dmi_header_t __iomem *dm, int intf_num)
{
u8 *data = (u8 *)dm;
u8 __iomem *data = (u8 __iomem *)dm;
unsigned long base_addr;
u8 reg_spacing;
u8 len = dm->length;
u8 len = readb(&dm->length);
dmi_ipmi_data_t *ipmi_data = dmi_data+intf_num;
ipmi_data->type = data[4];
ipmi_data->type = readb(&data[4]);
memcpy(&base_addr, data+8, sizeof(unsigned long));
if (len >= 0x11) {
@ -1640,12 +1640,12 @@ static int decode_dmi(dmi_header_t *dm, int intf_num)
}
/* If bit 4 of byte 0x10 is set, then the lsb for the address
is odd. */
ipmi_data->base_addr = base_addr | ((data[0x10] & 0x10) >> 4);
ipmi_data->base_addr = base_addr | ((readb(&data[0x10]) & 0x10) >> 4);
ipmi_data->irq = data[0x11];
ipmi_data->irq = readb(&data[0x11]);
/* The top two bits of byte 0x10 hold the register spacing. */
reg_spacing = (data[0x10] & 0xC0) >> 6;
reg_spacing = (readb(&data[0x10]) & 0xC0) >> 6;
switch(reg_spacing){
case 0x00: /* Byte boundaries */
ipmi_data->offset = 1;
@ -1673,7 +1673,7 @@ static int decode_dmi(dmi_header_t *dm, int intf_num)
ipmi_data->offset = 1;
}
ipmi_data->slave_addr = data[6];
ipmi_data->slave_addr = readb(&data[6]);
if (is_new_interface(-1, ipmi_data->addr_space,ipmi_data->base_addr)) {
dmi_data_entries++;
@ -1687,9 +1687,9 @@ static int decode_dmi(dmi_header_t *dm, int intf_num)
static int dmi_table(u32 base, int len, int num)
{
u8 *buf;
struct dmi_header *dm;
u8 *data;
u8 __iomem *buf;
struct dmi_header __iomem *dm;
u8 __iomem *data;
int i=1;
int status=-1;
int intf_num = 0;
@ -1702,12 +1702,12 @@ static int dmi_table(u32 base, int len, int num)
while(i<num && (data - buf) < len)
{
dm=(dmi_header_t *)data;
dm=(dmi_header_t __iomem *)data;
if((data-buf+dm->length) >= len)
if((data-buf+readb(&dm->length)) >= len)
break;
if (dm->type == 38) {
if (readb(&dm->type) == 38) {
if (decode_dmi(dm, intf_num) == 0) {
intf_num++;
if (intf_num >= SI_MAX_DRIVERS)
@ -1715,8 +1715,8 @@ static int dmi_table(u32 base, int len, int num)
}
}
data+=dm->length;
while((data-buf) < len && (*data || data[1]))
data+=readb(&dm->length);
while((data-buf) < len && (readb(data)||readb(data+1)))
data++;
data+=2;
i++;

2
drivers/char/ipmi/ipmi_si_sm.h
View File

@ -51,7 +51,7 @@ struct si_sm_io
/* Generic info used by the actual handling routines, the
state machine shouldn't touch these. */
void *info;
void *addr;
void __iomem *addr;
int regspacing;
int regsize;
int regshift;

4
drivers/char/mbcs.c
View File

@ -394,7 +394,7 @@ int mbcs_open(struct inode *ip, struct file *fp)
return -ENODEV;
}
ssize_t mbcs_sram_read(struct file * fp, char *buf, size_t len, loff_t * off)
ssize_t mbcs_sram_read(struct file * fp, char __user *buf, size_t len, loff_t * off)
{
struct cx_dev *cx_dev = fp->private_data;
struct mbcs_soft *soft = cx_dev->soft;
@ -419,7 +419,7 @@ ssize_t mbcs_sram_read(struct file * fp, char *buf, size_t len, loff_t * off)
}
ssize_t
mbcs_sram_write(struct file * fp, const char *buf, size_t len, loff_t * off)
mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * off)
{
struct cx_dev *cx_dev = fp->private_data;
struct mbcs_soft *soft = cx_dev->soft;

4
drivers/char/mbcs.h
View File

@ -543,9 +543,9 @@ struct mbcs_soft {
};
extern int mbcs_open(struct inode *ip, struct file *fp);
extern ssize_t mbcs_sram_read(struct file *fp, char *buf, size_t len,
extern ssize_t mbcs_sram_read(struct file *fp, char __user *buf, size_t len,
loff_t * off);
extern ssize_t mbcs_sram_write(struct file *fp, const char *buf, size_t len,
extern ssize_t mbcs_sram_write(struct file *fp, const char __user *buf, size_t len,
loff_t * off);
extern loff_t mbcs_sram_llseek(struct file *filp, loff_t off, int whence);
extern int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma);

6
drivers/char/sonypi.c
View File

@ -1021,11 +1021,11 @@ static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
ret = -EIO;
break;
}
if (copy_to_user((u8 *)arg, &val8, sizeof(val8)))
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
case SONYPI_IOCSFAN:
if (copy_from_user(&val8, (u8 *)arg, sizeof(val8))) {
if (copy_from_user(&val8, argp, sizeof(val8))) {
ret = -EFAULT;
break;
}
@ -1038,7 +1038,7 @@ static int sonypi_misc_ioctl(struct inode *ip, struct file *fp,
ret = -EIO;
break;
}
if (copy_to_user((u8 *)arg, &val8, sizeof(val8)))
if (copy_to_user(argp, &val8, sizeof(val8)))
ret = -EFAULT;
break;
default:

2
drivers/mmc/Kconfig
View File

@ -51,7 +51,7 @@ config MMC_PXA
config MMC_WBSD
tristate "Winbond W83L51xD SD/MMC Card Interface support"
depends on MMC && ISA
depends on MMC && ISA && ISA_DMA_API
help
This selects the Winbond(R) W83L51xD Secure digital and
Multimedia card Interface.

10
drivers/net/Kconfig
View File

@ -589,7 +589,7 @@ config EL2
config ELPLUS
tristate "3c505 \"EtherLink Plus\" support"
depends on NET_VENDOR_3COM && ISA
depends on NET_VENDOR_3COM && ISA && ISA_DMA_API
---help---
Information about this network (Ethernet) card can be found in
<file:Documentation/networking/3c505.txt>. If you have a card of
@ -630,7 +630,7 @@ config EL3
config 3C515
tristate "3c515 ISA \"Fast EtherLink\""
depends on NET_VENDOR_3COM && (ISA || EISA)
depends on NET_VENDOR_3COM && (ISA || EISA) && ISA_DMA_API
help
If you have a 3Com ISA EtherLink XL "Corkscrew" 3c515 Fast Ethernet
network card, say Y and read the Ethernet-HOWTO, available from
@ -708,7 +708,7 @@ config TYPHOON
config LANCE
tristate "AMD LANCE and PCnet (AT1500 and NE2100) support"
depends on NET_ETHERNET && ISA
depends on NET_ETHERNET && ISA && ISA_DMA_API
help
If you have a network (Ethernet) card of this type, say Y and read
the Ethernet-HOWTO, available from
@ -864,7 +864,7 @@ config NI52
config NI65
tristate "NI6510 support"
depends on NET_VENDOR_RACAL && ISA
depends on NET_VENDOR_RACAL && ISA && ISA_DMA_API
help
If you have a network (Ethernet) card of this type, say Y and read
the Ethernet-HOWTO, available from
@ -1072,7 +1072,7 @@ config NE2000
config ZNET
tristate "Zenith Z-Note support (EXPERIMENTAL)"
depends on NET_ISA && EXPERIMENTAL
depends on NET_ISA && EXPERIMENTAL && ISA_DMA_API
help
The Zenith Z-Note notebook computer has a built-in network
(Ethernet) card, and this is the Linux driver for it. Note that the

2
drivers/net/appletalk/Kconfig
View File

@ -13,7 +13,7 @@ config DEV_APPLETALK
config LTPC
tristate "Apple/Farallon LocalTalk PC support"
depends on DEV_APPLETALK && (ISA || EISA)
depends on DEV_APPLETALK && (ISA || EISA) && ISA_DMA_API
help
This allows you to use the AppleTalk PC card to connect to LocalTalk
networks. The card is also known as the Farallon PhoneNet PC card.

4
drivers/net/hamradio/Kconfig
View File

@ -45,7 +45,7 @@ config BPQETHER
config DMASCC
tristate "High-speed (DMA) SCC driver for AX.25"
depends on ISA && AX25 && BROKEN_ON_SMP
depends on ISA && AX25 && BROKEN_ON_SMP && ISA_DMA_API
---help---
This is a driver for high-speed SCC boards, i.e. those supporting
DMA on one port. You usually use those boards to connect your
@ -78,7 +78,7 @@ config DMASCC
config SCC
tristate "Z8530 SCC driver"
depends on ISA && AX25
depends on ISA && AX25 && ISA_DMA_API
---help---
These cards are used to connect your Linux box to an amateur radio
in order to communicate with other computers. If you want to use

10
drivers/net/irda/Kconfig
View File

@ -310,7 +310,7 @@ config SIGMATEL_FIR
config NSC_FIR
tristate "NSC PC87108/PC87338"
depends on IRDA
depends on IRDA && ISA_DMA_API
help
Say Y here if you want to build support for the NSC PC87108 and
PC87338 IrDA chipsets. This driver supports SIR,
@ -321,7 +321,7 @@ config NSC_FIR
config WINBOND_FIR
tristate "Winbond W83977AF (IR)"
depends on IRDA
depends on IRDA && ISA_DMA_API
help
Say Y here if you want to build IrDA support for the Winbond
W83977AF super-io chipset. This driver should be used for the IrDA
@ -347,7 +347,7 @@ config AU1000_FIR
config SMC_IRCC_FIR
tristate "SMSC IrCC (EXPERIMENTAL)"
depends on EXPERIMENTAL && IRDA
depends on EXPERIMENTAL && IRDA && ISA_DMA_API
help
Say Y here if you want to build support for the SMC Infrared
Communications Controller. It is used in a wide variety of
@ -357,7 +357,7 @@ config SMC_IRCC_FIR
config ALI_FIR
tristate "ALi M5123 FIR (EXPERIMENTAL)"
depends on EXPERIMENTAL && IRDA
depends on EXPERIMENTAL && IRDA && ISA_DMA_API
help
Say Y here if you want to build support for the ALi M5123 FIR
Controller. The ALi M5123 FIR Controller is embedded in ALi M1543C,
@ -385,7 +385,7 @@ config SA1100_FIR
config VIA_FIR
tristate "VIA VT8231/VT1211 SIR/MIR/FIR"
depends on IRDA
depends on IRDA && ISA_DMA_API
help
Say Y here if you want to build support for the VIA VT8231
and VIA VT1211 IrDA controllers, found on the motherboards using

6
drivers/net/ppp_deflate.c
View File

@ -87,8 +87,7 @@ static void z_comp_free(void *arg)
if (state) {
zlib_deflateEnd(&state->strm);
if (state->strm.workspace)
vfree(state->strm.workspace);
vfree(state->strm.workspace);
kfree(state);
}
}
@ -308,8 +307,7 @@ static void z_decomp_free(void *arg)
if (state) {
zlib_inflateEnd(&state->strm);
if (state->strm.workspace)
kfree(state->strm.workspace);
kfree(state->strm.workspace);
kfree(state);
}
}

12
drivers/net/ppp_generic.c
View File

@ -2467,14 +2467,10 @@ static void ppp_destroy_interface(struct ppp *ppp)
skb_queue_purge(&ppp->mrq);
#endif /* CONFIG_PPP_MULTILINK */
#ifdef CONFIG_PPP_FILTER
if (ppp->pass_filter) {
kfree(ppp->pass_filter);
ppp->pass_filter = NULL;
}
if (ppp->active_filter) {
kfree(ppp->active_filter);
ppp->active_filter = NULL;
}
kfree(ppp->pass_filter);
ppp->pass_filter = NULL;
kfree(ppp->active_filter);
ppp->active_filter = NULL;
#endif /* CONFIG_PPP_FILTER */
kfree(ppp);

6
drivers/net/wan/Kconfig
View File

@ -26,7 +26,7 @@ config WAN
# There is no way to detect a comtrol sv11 - force it modular for now.
config HOSTESS_SV11
tristate "Comtrol Hostess SV-11 support"
depends on WAN && ISA && m
depends on WAN && ISA && m && ISA_DMA_API
help
Driver for Comtrol Hostess SV-11 network card which
operates on low speed synchronous serial links at up to
@ -38,7 +38,7 @@ config HOSTESS_SV11
# The COSA/SRP driver has not been tested as non-modular yet.
config COSA
tristate "COSA/SRP sync serial boards support"
depends on WAN && ISA && m
depends on WAN && ISA && m && ISA_DMA_API
---help---
Driver for COSA and SRP synchronous serial boards.
@ -127,7 +127,7 @@ config LANMEDIA
# There is no way to detect a Sealevel board. Force it modular
config SEALEVEL_4021
tristate "Sealevel Systems 4021 support"
depends on WAN && ISA && m
depends on WAN && ISA && m && ISA_DMA_API
help
This is a driver for the Sealevel Systems ACB 56 serial I/O adapter.

8
drivers/net/wan/cycx_x25.c
View File

@ -436,9 +436,7 @@ static int cycx_wan_new_if(struct wan_device *wandev, struct net_device *dev,
}
if (err) {
if (chan->local_addr)
kfree(chan->local_addr);
kfree(chan->local_addr);
kfree(chan);
return err;
}
@ -458,9 +456,7 @@ static int cycx_wan_del_if(struct wan_device *wandev, struct net_device *dev)
struct cycx_x25_channel *chan = dev->priv;
if (chan->svc) {
if (chan->local_addr)
kfree(chan->local_addr);
kfree(chan->local_addr);
if (chan->state == WAN_CONNECTED)
del_timer(&chan->timer);
}

27
drivers/net/wan/pc300_tty.c
View File

@ -400,10 +400,8 @@ static void cpc_tty_close(struct tty_struct *tty, struct file *flip)
cpc_tty->buf_rx.last = NULL;
}
if (cpc_tty->buf_tx) {
kfree(cpc_tty->buf_tx);
cpc_tty->buf_tx = NULL;
}
kfree(cpc_tty->buf_tx);
cpc_tty->buf_tx = NULL;
CPC_TTY_DBG("%s: TTY closed\n",cpc_tty->name);
@ -666,7 +664,7 @@ static void cpc_tty_rx_work(void * data)
unsigned long port;
int i, j;
st_cpc_tty_area *cpc_tty;
volatile st_cpc_rx_buf * buf;
volatile st_cpc_rx_buf *buf;
char flags=0,flg_rx=1;
struct tty_ldisc *ld;
@ -680,9 +678,9 @@ static void cpc_tty_rx_work(void * data)
cpc_tty = &cpc_tty_area[port];
if ((buf=cpc_tty->buf_rx.first) != 0) {
if(cpc_tty->tty) {
if (cpc_tty->tty) {
ld = tty_ldisc_ref(cpc_tty->tty);
if(ld) {
if (ld) {
if (ld->receive_buf) {
CPC_TTY_DBG("%s: call line disc. receive_buf\n",cpc_tty->name);
ld->receive_buf(cpc_tty->tty, (char *)(buf->data), &flags, buf->size);
@ -691,7 +689,7 @@ static void cpc_tty_rx_work(void * data)
}
}
cpc_tty->buf_rx.first = cpc_tty->buf_rx.first->next;
kfree((unsigned char *)buf);
kfree(buf);
buf = cpc_tty->buf_rx.first;
flg_rx = 1;
}
@ -733,7 +731,7 @@ static void cpc_tty_rx_disc_frame(pc300ch_t *pc300chan)
void cpc_tty_receive(pc300dev_t *pc300dev)
{
st_cpc_tty_area *cpc_tty;
st_cpc_tty_area *cpc_tty;
pc300ch_t *pc300chan = (pc300ch_t *)pc300dev->chan;
pc300_t *card = (pc300_t *)pc300chan->card;
int ch = pc300chan->channel;
@ -742,7 +740,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
int rx_len, rx_aux;
volatile unsigned char status;
unsigned short first_bd = pc300chan->rx_first_bd;
st_cpc_rx_buf *new=NULL;
st_cpc_rx_buf *new = NULL;
unsigned char dsr_rx;
if (pc300dev->cpc_tty == NULL) {
@ -762,7 +760,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
if (status & DST_EOM) {
break;
}
ptdescr=(pcsca_bd_t __iomem *)(card->hw.rambase+cpc_readl(&ptdescr->next));
ptdescr = (pcsca_bd_t __iomem *)(card->hw.rambase+cpc_readl(&ptdescr->next));
}
if (!rx_len) {
@ -771,10 +769,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
cpc_writel(card->hw.scabase + DRX_REG(EDAL, ch),
RX_BD_ADDR(ch, pc300chan->rx_last_bd));
}
if (new) {
kfree(new);
new = NULL;
}
kfree(new);
return;
}
@ -787,7 +782,7 @@ void cpc_tty_receive(pc300dev_t *pc300dev)
continue;
}
new = (st_cpc_rx_buf *) kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
new = (st_cpc_rx_buf *)kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
if (new == 0) {
cpc_tty_rx_disc_frame(pc300chan);
continue;

13
drivers/net/wan/sdla_chdlc.c
View File

@ -3664,15 +3664,10 @@ static void wanpipe_tty_close(struct tty_struct *tty, struct file * filp)
chdlc_disable_comm_shutdown(card);
unlock_adapter_irq(&card->wandev.lock,&smp_flags);
if (card->tty_buf){
kfree(card->tty_buf);
card->tty_buf=NULL;
}
if (card->tty_rx){
kfree(card->tty_rx);
card->tty_rx=NULL;
}
kfree(card->tty_buf);
card->tty_buf = NULL;
kfree(card->tty_rx);
card->tty_rx = NULL;
}
return;
}

20
drivers/net/wan/x25_asy.c
View File

@ -107,13 +107,9 @@ static struct x25_asy *x25_asy_alloc(void)
static void x25_asy_free(struct x25_asy *sl)
{
/* Free all X.25 frame buffers. */
if (sl->rbuff) {
kfree(sl->rbuff);
}
kfree(sl->rbuff);
sl->rbuff = NULL;
if (sl->xbuff) {
kfree(sl->xbuff);
}
kfree(sl->xbuff);
sl->xbuff = NULL;
if (!test_and_clear_bit(SLF_INUSE, &sl->flags)) {
@ -134,10 +130,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu)
{
printk("%s: unable to grow X.25 buffers, MTU change cancelled.\n",
dev->name);
if (xbuff != NULL)
kfree(xbuff);
if (rbuff != NULL)
kfree(rbuff);
kfree(xbuff);
kfree(rbuff);
return -ENOMEM;
}
@ -169,10 +163,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu)
spin_unlock_bh(&sl->lock);
if (xbuff != NULL)
kfree(xbuff);
if (rbuff != NULL)
kfree(rbuff);
kfree(xbuff);
kfree(rbuff);
return 0;
}

2
drivers/parport/Kconfig
View File

@ -34,7 +34,7 @@ config PARPORT
config PARPORT_PC
tristate "PC-style hardware"
depends on PARPORT && (!SPARC64 || PCI) && (!SPARC32 || BROKEN)
depends on PARPORT && (!SPARC64 || PCI) && !SPARC32
---help---
You should say Y here if you have a PC-style parallel port. All
IBM PC compatible computers and some Alphas have PC-style

34
drivers/parport/parport_pc.c
View File

@ -67,6 +67,10 @@
#define PARPORT_PC_MAX_PORTS PARPORT_MAX
#ifdef CONFIG_ISA_DMA_API
#define HAS_DMA
#endif
/* ECR modes */
#define ECR_SPP 00
#define ECR_PS2 01
@ -610,6 +614,7 @@ dump_parport_state ("leave fifo_write_block_pio", port);
return length - left;
}
#ifdef HAS_DMA
static size_t parport_pc_fifo_write_block_dma (struct parport *port,
const void *buf, size_t length)
{
@ -732,6 +737,17 @@ dump_parport_state ("enter fifo_write_block_dma", port);
dump_parport_state ("leave fifo_write_block_dma", port);
return length - left;
}
#endif
static inline size_t parport_pc_fifo_write_block(struct parport *port,
const void *buf, size_t length)
{
#ifdef HAS_DMA
if (port->dma != PARPORT_DMA_NONE)
return parport_pc_fifo_write_block_dma (port, buf, length);
#endif
return parport_pc_fifo_write_block_pio (port, buf, length);
}
/* Parallel Port FIFO mode (ECP chipsets) */
static size_t parport_pc_compat_write_block_pio (struct parport *port,
@ -758,10 +774,7 @@ static size_t parport_pc_compat_write_block_pio (struct parport *port,
port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
/* Write the data to the FIFO. */
if (port->dma != PARPORT_DMA_NONE)
written = parport_pc_fifo_write_block_dma (port, buf, length);
else
written = parport_pc_fifo_write_block_pio (port, buf, length);
written = parport_pc_fifo_write_block(port, buf, length);
/* Finish up. */
/* For some hardware we don't want to touch the mode until
@ -856,10 +869,7 @@ static size_t parport_pc_ecp_write_block_pio (struct parport *port,
port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
/* Write the data to the FIFO. */
if (port->dma != PARPORT_DMA_NONE)
written = parport_pc_fifo_write_block_dma (port, buf, length);
else
written = parport_pc_fifo_write_block_pio (port, buf, length);
written = parport_pc_fifo_write_block(port, buf, length);
/* Finish up. */
/* For some hardware we don't want to touch the mode until
@ -2285,6 +2295,7 @@ struct parport *parport_pc_probe_port (unsigned long int base,
}
#ifdef CONFIG_PARPORT_PC_FIFO
#ifdef HAS_DMA
if (p->dma != PARPORT_DMA_NONE) {
if (request_dma (p->dma, p->name)) {
printk (KERN_WARNING "%s: dma %d in use, "
@ -2306,7 +2317,8 @@ struct parport *parport_pc_probe_port (unsigned long int base,
}
}
}
#endif /* CONFIG_PARPORT_PC_FIFO */
#endif
#endif
}
/* Done probing. Now put the port into a sensible start-up state. */
@ -2367,11 +2379,13 @@ void parport_pc_unregister_port (struct parport *p)
if (p->modes & PARPORT_MODE_ECP)
release_region(p->base_hi, 3);
#ifdef CONFIG_PARPORT_PC_FIFO
#ifdef HAS_DMA
if (priv->dma_buf)
pci_free_consistent(priv->dev, PAGE_SIZE,
priv->dma_buf,
priv->dma_handle);
#endif /* CONFIG_PARPORT_PC_FIFO */
#endif
#endif
kfree (p->private_data);
parport_put_port(p);
kfree (ops); /* hope no-one cached it */

2
drivers/pci/hotplug/ibmphp.h
View File

@ -196,7 +196,7 @@ struct ebda_hpc_bus {
/********************************************************************
* THREE TYPE OF HOT PLUG CONTROLER *
* THREE TYPE OF HOT PLUG CONTROLLER *
********************************************************************/
struct isa_ctlr_access {

6
drivers/pci/hotplug/ibmphp_hpc.c
View File

@ -64,7 +64,7 @@ static int to_debug = FALSE;
#define WPG_I2C_OR 0x2000 // I2C OR operation
//----------------------------------------------------------------------------
// Command set for I2C Master Operation Setup Regisetr
// Command set for I2C Master Operation Setup Register
//----------------------------------------------------------------------------
#define WPG_READATADDR_MASK 0x00010000 // read,bytes,I2C shifted,index
#define WPG_WRITEATADDR_MASK 0x40010000 // write,bytes,I2C shifted,index
@ -835,7 +835,7 @@ static void poll_hpc (void)
if (ibmphp_shutdown)
break;
/* try to get the lock to do some kind of harware access */
/* try to get the lock to do some kind of hardware access */
down (&semOperations);
switch (poll_state) {
@ -906,7 +906,7 @@ static void poll_hpc (void)
poll_state = POLL_LATCH_REGISTER;
break;
}
/* give up the harware semaphore */
/* give up the hardware semaphore */
up (&semOperations);
/* sleep for a short time just for good measure */
msleep(100);

7
drivers/pci/hotplug/ibmphp_pci.c
View File

@ -1308,10 +1308,10 @@ static int unconfigure_boot_device (u8 busno, u8 device, u8 function)
/* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */
} else {
/* This is Memory */
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) {
/* pfmem */
debug ("start address of pfmem is %x\n", start_address);
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (ibmphp_find_resource (bus, start_address, &pfmem, PFMEM) < 0) {
err ("cannot find corresponding PFMEM resource to remove\n");
@ -1325,6 +1325,8 @@ static int unconfigure_boot_device (u8 busno, u8 device, u8 function)
} else {
/* regular memory */
debug ("start address of mem is %x\n", start_address);
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (ibmphp_find_resource (bus, start_address, &mem, MEM) < 0) {
err ("cannot find corresponding MEM resource to remove\n");
return -EIO;
@ -1422,9 +1424,9 @@ static int unconfigure_boot_bridge (u8 busno, u8 device, u8 function)
/* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */
} else {
/* This is Memory */
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) {
/* pfmem */
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (ibmphp_find_resource (bus, start_address, &pfmem, PFMEM) < 0) {
err ("cannot find corresponding PFMEM resource to remove\n");
return -EINVAL;
@ -1436,6 +1438,7 @@ static int unconfigure_boot_bridge (u8 busno, u8 device, u8 function)
}
} else {
/* regular memory */
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
if (ibmphp_find_resource (bus, start_address, &mem, MEM) < 0) {
err ("cannot find corresponding MEM resource to remove\n");
return -EINVAL;

2
drivers/pci/hotplug/pci_hotplug.h
View File

@ -150,7 +150,7 @@ struct hotplug_slot_info {
* @name: the name of the slot being registered. This string must
* be unique amoung slots registered on this system.
* @ops: pointer to the &struct hotplug_slot_ops to be used for this slot
* @info: pointer to the &struct hotplug_slot_info for the inital values for
* @info: pointer to the &struct hotplug_slot_info for the initial values for
* this slot.
* @release: called during pci_hp_deregister to free memory allocated in a
* hotplug_slot structure.

23
drivers/pci/hotplug/pciehp_core.c
View File

@ -90,6 +90,22 @@ static struct hotplug_slot_ops pciehp_hotplug_slot_ops = {
.get_cur_bus_speed = get_cur_bus_speed,
};
/**
* release_slot - free up the memory used by a slot
* @hotplug_slot: slot to free
*/
static void release_slot(struct hotplug_slot *hotplug_slot)
{
struct slot *slot = hotplug_slot->private;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
kfree(slot->hotplug_slot->info);
kfree(slot->hotplug_slot->name);
kfree(slot->hotplug_slot);
kfree(slot);
}
static int init_slots(struct controller *ctrl)
{
struct slot *new_slot;
@ -139,7 +155,8 @@ static int init_slots(struct controller *ctrl)
/* register this slot with the hotplug pci core */
new_slot->hotplug_slot->private = new_slot;
make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
new_slot->hotplug_slot->release = &release_slot;
make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
new_slot->hotplug_slot->ops = &pciehp_hotplug_slot_ops;
new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
@ -188,10 +205,6 @@ static int cleanup_slots (struct controller * ctrl)
while (old_slot) {
next_slot = old_slot->next;
pci_hp_deregister (old_slot->hotplug_slot);
kfree(old_slot->hotplug_slot->info);
kfree(old_slot->hotplug_slot->name);
kfree(old_slot->hotplug_slot);
kfree(old_slot);
old_slot = next_slot;
}

2
drivers/pci/hotplug/pcihp_skeleton.c
View File

@ -297,7 +297,7 @@ static int __init init_slots(void)
hotplug_slot->ops = &skel_hotplug_slot_ops;
/*
* Initilize the slot info structure with some known
* Initialize the slot info structure with some known
* good values.
*/
info->power_status = get_power_status(slot);

6
drivers/pci/msi.c
View File

@ -522,7 +522,7 @@ void pci_scan_msi_device(struct pci_dev *dev)
* msi_capability_init - configure device's MSI capability structure
* @dev: pointer to the pci_dev data structure of MSI device function
*
* Setup the MSI capability structure of device funtion with a single
* Setup the MSI capability structure of device function with a single
* MSI vector, regardless of device function is capable of handling
* multiple messages. A return of zero indicates the successful setup
* of an entry zero with the new MSI vector or non-zero for otherwise.
@ -599,7 +599,7 @@ static int msi_capability_init(struct pci_dev *dev)
* msix_capability_init - configure device's MSI-X capability
* @dev: pointer to the pci_dev data structure of MSI-X device function
*
* Setup the MSI-X capability structure of device funtion with a
* Setup the MSI-X capability structure of device function with a
* single MSI-X vector. A return of zero indicates the successful setup of
* requested MSI-X entries with allocated vectors or non-zero for otherwise.
**/
@ -1074,7 +1074,7 @@ void pci_disable_msix(struct pci_dev* dev)
* msi_remove_pci_irq_vectors - reclaim MSI(X) vectors to unused state
* @dev: pointer to the pci_dev data structure of MSI(X) device function
*
* Being called during hotplug remove, from which the device funciton
* Being called during hotplug remove, from which the device function
* is hot-removed. All previous assigned MSI/MSI-X vectors, if
* allocated for this device function, are reclaimed to unused state,
* which may be used later on.

2
drivers/pci/pci-acpi.c
View File

@ -19,7 +19,7 @@
static u32 ctrlset_buf[3] = {0, 0, 0};
static u32 global_ctrlsets = 0;
u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66};
static acpi_status
acpi_query_osc (

11
drivers/pci/pci-driver.c
View File

@ -318,6 +318,14 @@ static int pci_device_resume(struct device * dev)
return 0;
}
static void pci_device_shutdown(struct device *dev)
{
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
}
#define kobj_to_pci_driver(obj) container_of(obj, struct device_driver, kobj)
#define attr_to_driver_attribute(obj) container_of(obj, struct driver_attribute, attr)
@ -373,7 +381,7 @@ pci_populate_driver_dir(struct pci_driver *drv)
*
* Adds the driver structure to the list of registered drivers.
* Returns a negative value on error, otherwise 0.
* If no error occured, the driver remains registered even if
* If no error occurred, the driver remains registered even if
* no device was claimed during registration.
*/
int pci_register_driver(struct pci_driver *drv)
@ -385,6 +393,7 @@ int pci_register_driver(struct pci_driver *drv)
drv->driver.bus = &pci_bus_type;
drv->driver.probe = pci_device_probe;
drv->driver.remove = pci_device_remove;
drv->driver.shutdown = pci_device_shutdown,
drv->driver.owner = drv->owner;
drv->driver.kobj.ktype = &pci_driver_kobj_type;
pci_init_dynids(&drv->dynids);

82
drivers/pci/pci-sysfs.c
View File

@ -91,6 +91,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
unsigned int size = 64;
loff_t init_off = off;
u8 *data = (u8*) buf;
/* Several chips lock up trying to read undefined config space */
if (capable(CAP_SYS_ADMIN)) {
@ -108,30 +109,47 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
size = count;
}
while (off & 3) {
unsigned char val;
if ((off & 1) && size) {
u8 val;
pci_read_config_byte(dev, off, &val);
buf[off - init_off] = val;
data[off - init_off] = val;
off++;
if (--size == 0)
break;
size--;
}
if ((off & 3) && size > 2) {
u16 val;
pci_read_config_word(dev, off, &val);
data[off - init_off] = val & 0xff;
data[off - init_off + 1] = (val >> 8) & 0xff;
off += 2;
size -= 2;
}
while (size > 3) {
unsigned int val;
u32 val;
pci_read_config_dword(dev, off, &val);
buf[off - init_off] = val & 0xff;
buf[off - init_off + 1] = (val >> 8) & 0xff;
buf[off - init_off + 2] = (val >> 16) & 0xff;
buf[off - init_off + 3] = (val >> 24) & 0xff;
data[off - init_off] = val & 0xff;
data[off - init_off + 1] = (val >> 8) & 0xff;
data[off - init_off + 2] = (val >> 16) & 0xff;
data[off - init_off + 3] = (val >> 24) & 0xff;
off += 4;
size -= 4;
}
while (size > 0) {
unsigned char val;
if (size >= 2) {
u16 val;
pci_read_config_word(dev, off, &val);
data[off - init_off] = val & 0xff;
data[off - init_off + 1] = (val >> 8) & 0xff;
off += 2;
size -= 2;
}
if (size > 0) {
u8 val;
pci_read_config_byte(dev, off, &val);
buf[off - init_off] = val;
data[off - init_off] = val;
off++;
--size;
}
@ -145,6 +163,7 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
struct pci_dev *dev = to_pci_dev(container_of(kobj,struct device,kobj));
unsigned int size = count;
loff_t init_off = off;
u8 *data = (u8*) buf;
if (off > dev->cfg_size)
return 0;
@ -152,26 +171,41 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
size = dev->cfg_size - off;
count = size;
}
while (off & 3) {
pci_write_config_byte(dev, off, buf[off - init_off]);
if ((off & 1) && size) {
pci_write_config_byte(dev, off, data[off - init_off]);
off++;
if (--size == 0)
break;
size--;
}
if ((off & 3) && size > 2) {
u16 val = data[off - init_off];
val |= (u16) data[off - init_off + 1] << 8;
pci_write_config_word(dev, off, val);
off += 2;
size -= 2;
}
while (size > 3) {
unsigned int val = buf[off - init_off];
val |= (unsigned int) buf[off - init_off + 1] << 8;
val |= (unsigned int) buf[off - init_off + 2] << 16;
val |= (unsigned int) buf[off - init_off + 3] << 24;
u32 val = data[off - init_off];
val |= (u32) data[off - init_off + 1] << 8;
val |= (u32) data[off - init_off + 2] << 16;
val |= (u32) data[off - init_off + 3] << 24;
pci_write_config_dword(dev, off, val);
off += 4;
size -= 4;
}
if (size >= 2) {
u16 val = data[off - init_off];
val |= (u16) data[off - init_off + 1] << 8;
pci_write_config_word(dev, off, val);
off += 2;
size -= 2;
}
while (size > 0) {
pci_write_config_byte(dev, off, buf[off - init_off]);
if (size) {
pci_write_config_byte(dev, off, data[off - init_off]);
off++;
--size;
}

20
drivers/pci/pci.c
View File

@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
/**
@ -398,10 +399,10 @@ pci_enable_device(struct pci_dev *dev)
{
int err;
dev->is_enabled = 1;
if ((err = pci_enable_device_bars(dev, (1 << PCI_NUM_RESOURCES) - 1)))
return err;
pci_fixup_device(pci_fixup_enable, dev);
dev->is_enabled = 1;
return 0;
}
@ -427,16 +428,15 @@ pci_disable_device(struct pci_dev *dev)
{
u16 pci_command;
dev->is_enabled = 0;
dev->is_busmaster = 0;
pci_read_config_word(dev, PCI_COMMAND, &pci_command);
if (pci_command & PCI_COMMAND_MASTER) {
pci_command &= ~PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, pci_command);
}
dev->is_busmaster = 0;
pcibios_disable_device(dev);
dev->is_enabled = 0;
}
/**
@ -748,17 +748,6 @@ pci_set_dma_mask(struct pci_dev *dev, u64 mask)
return 0;
}
int
pci_dac_set_dma_mask(struct pci_dev *dev, u64 mask)
{
if (!pci_dac_dma_supported(dev, mask))
return -EIO;
dev->dma_mask = mask;
return 0;
}
int
pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
@ -821,7 +810,6 @@ EXPORT_SYMBOL(pci_set_master);
EXPORT_SYMBOL(pci_set_mwi);
EXPORT_SYMBOL(pci_clear_mwi);
EXPORT_SYMBOL(pci_set_dma_mask);
EXPORT_SYMBOL(pci_dac_set_dma_mask);
EXPORT_SYMBOL(pci_set_consistent_dma_mask);
EXPORT_SYMBOL(pci_assign_resource);
EXPORT_SYMBOL(pci_find_parent_resource);

1
drivers/pci/probe.c
View File

@ -9,6 +9,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/cpumask.h>
#include "pci.h"
#define CARDBUS_LATENCY_TIMER 176 /* secondary latency timer */
#define CARDBUS_RESERVE_BUSNR 3

1
drivers/pci/proc.c
View File

@ -15,6 +15,7 @@
#include <asm/uaccess.h>
#include <asm/byteorder.h>
#include "pci.h"
static int proc_initialized; /* = 0 */

2
drivers/pci/quirks.c
View File

@ -18,6 +18,7 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
#include "pci.h"
/* Deal with broken BIOS'es that neglect to enable passive release,
which can cause problems in combination with the 82441FX/PPro MTRRs */
@ -328,6 +329,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12,
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi );
/*
* VIA ACPI: One IO region pointed to by longword at

12
drivers/scsi/Kconfig
View File

@ -260,7 +260,7 @@ config SCSI_3W_9XXX
config SCSI_7000FASST
tristate "7000FASST SCSI support"
depends on ISA && SCSI
depends on ISA && SCSI && ISA_DMA_API
help
This driver supports the Western Digital 7000 SCSI host adapter
family. Some information is in the source:
@ -295,7 +295,7 @@ config SCSI_AHA152X
config SCSI_AHA1542
tristate "Adaptec AHA1542 support"
depends on ISA && SCSI
depends on ISA && SCSI && ISA_DMA_API
---help---
This is support for a SCSI host adapter. It is explained in section
3.4 of the SCSI-HOWTO, available from
@ -515,7 +515,7 @@ config SCSI_SATA_VITESSE
config SCSI_BUSLOGIC
tristate "BusLogic SCSI support"
depends on (PCI || ISA || MCA) && SCSI && (BROKEN || !SPARC64)
depends on (PCI || ISA || MCA) && SCSI && ISA_DMA_API
---help---
This is support for BusLogic MultiMaster and FlashPoint SCSI Host
Adapters. Consult the SCSI-HOWTO, available from
@ -571,7 +571,7 @@ config SCSI_DTC3280
config SCSI_EATA
tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
depends on (ISA || EISA || PCI) && SCSI && (BROKEN || !SPARC64)
depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
---help---
This driver supports all EATA/DMA-compliant SCSI host adapters. DPT
ISA and all EISA I/O addresses are probed looking for the "EATA"
@ -665,7 +665,7 @@ config SCSI_FD_MCS
config SCSI_GDTH
tristate "Intel/ICP (former GDT SCSI Disk Array) RAID Controller support"
depends on (ISA || EISA || PCI) && SCSI && (BROKEN || !SPARC64)
depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
---help---
Formerly called GDT SCSI Disk Array Controller Support.
@ -1416,7 +1416,7 @@ config SCSI_T128
config SCSI_U14_34F
tristate "UltraStor 14F/34F support"
depends on ISA && SCSI
depends on ISA && SCSI && ISA_DMA_API
---help---
This is support for the UltraStor 14F and 34F SCSI-2 host adapters.
The source at <file:drivers/scsi/u14-34f.c> contains some

4
drivers/usb/core/message.c
View File

@ -431,7 +431,7 @@ nomem:
* (2) error, where io->status is a negative errno value. The number
* of io->bytes transferred before the error is usually less
* than requested, and can be nonzero.
* (3) cancelation, a type of error with status -ECONNRESET that
* (3) cancellation, a type of error with status -ECONNRESET that
* is initiated by usb_sg_cancel().
*
* When this function returns, all memory allocated through usb_sg_init() or
@ -1282,7 +1282,7 @@ static void release_interface(struct device *dev)
* bus rwsem; usb device driver probe() methods cannot use this routine.
*
* Returns zero on success, or else the status code returned by the
* underlying call that failed. On succesful completion, each interface
* underlying call that failed. On successful completion, each interface
* in the original device configuration has been destroyed, and each one
* in the new configuration has been probed by all relevant usb device
* drivers currently known to the kernel.

6
drivers/usb/core/urb.c
View File

@ -121,7 +121,7 @@ struct urb * usb_get_urb(struct urb *urb)
* describing that request to the USB subsystem. Request completion will
* be indicated later, asynchronously, by calling the completion handler.
* The three types of completion are success, error, and unlink
* (a software-induced fault, also called "request cancelation").
* (a software-induced fault, also called "request cancellation").
*
* URBs may be submitted in interrupt context.
*
@ -170,7 +170,7 @@ struct urb * usb_get_urb(struct urb *urb)
* As of Linux 2.6, all USB endpoint transfer queues support depths greater
* than one. This was previously a HCD-specific behavior, except for ISO
* transfers. Non-isochronous endpoint queues are inactive during cleanup
* after faults (transfer errors or cancelation).
* after faults (transfer errors or cancellation).
*
* Reserved Bandwidth Transfers:
*
@ -395,7 +395,7 @@ int usb_submit_urb(struct urb *urb, int mem_flags)
*
* This routine cancels an in-progress request. URBs complete only
* once per submission, and may be canceled only once per submission.
* Successful cancelation means the requests's completion handler will
* Successful cancellation means the requests's completion handler will
* be called with a status code indicating that the request has been
* canceled (rather than any other code) and will quickly be removed
* from host controller data structures.

2
drivers/usb/gadget/ether.c
View File

@ -569,7 +569,7 @@ static const struct usb_cdc_ether_desc ether_desc = {
/* include the status endpoint if we can, even where it's optional.
* use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one
* packet, to simplify cancelation; and a big transfer interval, to
* packet, to simplify cancellation; and a big transfer interval, to
* waste less bandwidth.
*
* some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even

2
drivers/usb/gadget/inode.c
View File

@ -275,7 +275,7 @@ static const char *CHIP;
*
* After opening, configure non-control endpoints. Then use normal
* stream read() and write() requests; and maybe ioctl() to get more
* precise FIFO status when recovering from cancelation.
* precise FIFO status when recovering from cancellation.
*/
static void epio_complete (struct usb_ep *ep, struct usb_request *req)

2
drivers/usb/gadget/lh7a40x_udc.c
View File

@ -705,7 +705,7 @@ void nuke(struct lh7a40x_ep *ep, int status)
done(ep, req, status);
}
/* Disable IRQ if EP is enabled (has decriptor) */
/* Disable IRQ if EP is enabled (has descriptor) */
if (ep->desc)
pio_irq_disable(ep_index(ep));
}

2
drivers/usb/gadget/serial.c
View File

@ -240,7 +240,7 @@ struct gs_dev {
struct usb_ep *dev_notify_ep; /* address of notify endpoint */
struct usb_ep *dev_in_ep; /* address of in endpoint */
struct usb_ep *dev_out_ep; /* address of out endpoint */
struct usb_endpoint_descriptor /* desciptor of notify ep */
struct usb_endpoint_descriptor /* descriptor of notify ep */
*dev_notify_ep_desc;
struct usb_endpoint_descriptor /* descriptor of in endpoint */
*dev_in_ep_desc;

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