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m68k: ignore restart_syscall, which is not needed on m68k.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16.
* Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program
the host for the transfer mode after programming the device. Set it
in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac
and via82cxxx host drivers.
* Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely
skip programming of host/device for the transfer mode ("smart" hosts).
Set it in it821x host driver and check it in ide_tune_dma().
* Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all
direct ->set_pio_mode/->speedproc users to use these helpers.
* Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc
methods to callers.
* Rename ->speedproc method to ->set_dma_mode, make it void and update
all implementations accordingly.
* Update ide_set_xfer_rate() comments.
* Unexport ide_config_drive_speed().
v2:
* Fix issues noticed by Sergei:
- export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt
to setting DMA modes from sc1200_set_pio_mode() to do_special()
- check IDE_HFLAG_NO_SET_MODE in ide_tune_dma()
- check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode()
- check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode()
- return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL
- don't set ->set_{pio,dma}_mode on it821x in "smart" mode
- fix build problem in pmac.c
- minor fixes in au1xxx-ide.c/cs5530.c/siimage.c
- improve patch description
Changes in behavior caused by this patch:
- HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change
PIO mode if it821x controller is in "smart" mode
- removal of two debugging printk-s (from cs5530.c and sc1200.c)
- transfer modes 0x00-0x07 passed from user space may be programmed twice on
the device (not really an issue since 0x00 is not supported correctly by
any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid)
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add "good DMA drives" hack for icside to ide-dma.c::ide_find_dma_mode()
(in the long-term it should be either removed or generalized for all hosts).
* Use ide_tune_dma() in icside.c::icside_dma_check().
This results in the following changes in behavior:
- pre-EIDE SWDMA modes are now also respected
- drive->autodma is checked instead of hwif->autodma
(doesn't really matter as icside sets both to "1")
* Make ide-dma.c::__ide_dma_good_drive() static and drop "__" prefix.
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Use ide_config_drive_speed() instead of pmac_ide_do_setfeature() and remove
the latter, also ide-iops.c::__ide_wait_stat() could be static again.
Since for IDE PMAC host driver IDE_CONTROL_REG is always true, device's
->quirk_list is always zero and ->ide_dma_host_{on,off} are nops than
the only changes in behavior are:
* if PIO mode is set then ->dma_off_queitly is called to disable DMA
* if setting transfer mode fails ide_dump_status() is called to dump status
v2:
* IDE PMAC controllers allow separate PIO and DMA timings and PPC userland
depends on this fact, and calls "hdparm -p" without calling "hdparm -d".
Therefore to compensate for DMA being disabled by ide_config_drive_speed()
for PIO modes:
- add IDE_HFLAG_SET_PIO_MODE_KEEP_DMA flag and set it in PMAC host driver
- add handling of the new flag to ide-io.c::do_special()
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Use __ide_wait_stat() instead of wait_for_ready() in pmac_ide_do_setfeature().
While at it do following changes to match __ide_wait_stat() call in
ide_config_drive_speed():
* Wait WAIT_CMD time (20 sec) instead of 2 sec for device to clear BUSY_STAT.
* Check DRQ_STAT bit (shouldn't be set for good device status).
Also remove no longer needed wait_for_ready() from ide-iops.c.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Split off checking of the status register from ide_wait_stat() to
__ide_wait_stat() helper.
* Use the new helper in ide_config_drive_speed(). The only change in the
functionality is that the function now fails if after 20 sec (WAIT_CMD)
device is still busy (BUSY_STAT bit is set) while previously instead of
failing the function continued with checking for the correct device status
(which would give the device additional 10 usec to clear BUSY_STAT bit).
* Remove stale comment for ide_config_drive_speed().
* Remove duplicate comment for ide_wait_stat() from <linux/ide.h>.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This is the driver for latest Blackfin on-chip nand flash controller
- use nand_chip and mtd_info common nand driver interface
- provide both PIO and dma operation
- compiled with ezkit bf548 configuration
- use hardware 1-bit ECC
- tested with YAFFS2 and can mount YAFFS2 filesystem as rootfs
ChangeLog from try#1
- use hweight32() instead of count_bits()
- replace bf54x with bf5xx and BF54X with BF5XX
- compare against plat->page_size in 2 cases when enable hardware ECC
ChangeLog from try#2
- passed nand_test suites
- use cpu_relax() instead of busy wait loop
- some coding style issue pointed out by Andrew
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
When we press ctrl-alt-del,kernel_restart_prepare will invoke
cfi_intelext_reboot which will set flash to read array mode, but later
when device_shutdown is invoked which may put current work queue to
sleep and other process may be scheduled to running and programming
flash in not FL_READY mode again. So we can't boot up if this flash is
used for bootloader.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This patch adds a new vcpu-based IOCTL to save and restore the local
apic registers for a single vcpu. The kernel only copies the apic page as
a whole, extraction of registers is left to userspace side. On restore, the
APIC timer is restarted from the initial count, this introduces a little
delay, but works fine.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This patch adds support for in-kernel ioapic save and restore (to
and from userspace). It uses the same get/set_irqchip ioctl as
in-kernel PIC.
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This patch adds two new ioctls to dump and write kernel irqchips for
save/restore and live migration. PIC s/r and l/m is implemented in this
patch.
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
By sleeping in the kernel when hlt is executed, we simplify the in-kernel
guest interrupt path considerably.
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Because lightweight exits (exits which don't involve userspace) are many
times faster than heavyweight exits, it makes sense to emulate high usage
devices in the kernel. The local APIC is one such device, especially for
Windows and for SMP, so we add an APIC model to kvm.
It also allows in-kernel host-side drivers to inject interrupts without
going through userspace.
[compile fix on i386 from Jindrich Makovicka]
Signed-off-by: Yaozu (Eddie) Dong <Eddie.Dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Add the hypercall number to kvm_run and initialize it. This changes the ABI,
but as this particular ABI was unusable before this no users are affected.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Intel manual (and KVM definition) say the TPR is 4 bits wide. Also fix
CR8_RESEVED_BITS typo.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Creating one's own BITMAP macro seems suboptimal: if we use manual
arithmetic in the one place exposed to userspace, we can use standard
macros elsewhere.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>
KVM reuses the IOAPIC register definitions, and needs them even if the
host is not compiled with IOAPIC support. Move the #ifdef below so that only
the IOAPIC variables and functions are protected, and the register definitions
are available to all.
Signed-off-by: Avi Kivity <avi@qumranet.com>
According to latest memory ordering specification documents from Intel
and AMD, both manufacturers are committed to in-order loads from
cacheable memory for the x86 architecture. Hence, smp_rmb() may be a
simple barrier.
Also according to those documents, and according to existing practice in
Linux (eg. spin_unlock doesn't enforce ordering), stores to cacheable
memory are visible in program order too. Special string stores are safe
-- their constituent stores may be out of order, but they must complete
in order WRT surrounding stores. Nontemporal stores to WB memory can go
out of order, and so they should be fenced explicitly to make them
appear in-order WRT other stores. Hence, smp_wmb() may be a simple
barrier.
http://developer.intel.com/products/processor/manuals/318147.pdfhttp://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24593.pdf
In userspace microbenchmarks on a core2 system, fence instructions range
anywhere from around 15 cycles to 50, which may not be totally
insignificant in performance critical paths (code size will go down
too).
However the primary motivation for this is to have the canonical barrier
implementation for x86 architecture.
smp_rmb on buggy pentium pros remains a locked op, which is apparently
required.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
wmb() on x86 must always include a barrier, because stores can go out of
order in many cases when dealing with devices (eg. WC memory).
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (119 commits)
[libata] struct pci_dev related cleanups
libata: use ata_exec_internal() for PMP register access
libata: implement ATA_PFLAG_RESETTING
libata: add @timeout to ata_exec_internal[_sg]()
ahci: fix notification handling
ahci: clean up PORT_IRQ_BAD_PMP enabling
ahci: kill leftover from enabling NCQ over PMP
libata: wrap schedule_timeout_uninterruptible() in loop
libata: skip suppress reporting if ATA_EHI_QUIET
libata: clear ehi description after initial host report
pata_jmicron: match vendor and class code only
libata: add ST9160821AS / 3.ALD to NCQ blacklist
pata_acpi: ACPI driver support
libata-core: Expose gtm methods for driver use
libata: add HDT722516DLA380 to NCQ blacklist
libata: blacklist NCQ on Seagate Barracuda ST380817AS
[libata] Turn on ACPI by default
libata_scsi: Fix ATAPI transfer lengths
libata: correct handling of SRST reset sequences
libata: Integrate ACPI-based PATA/SATA hotplug - version 5
...
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (37 commits)
PCI: merge almost all of pci_32.h and pci_64.h together
PCI: X86: Introduce and enable PCI domain support
PCI: Add 'nodomains' boot option, and pci_domains_supported global
PCI: modify PCI bridge control ISA flag for clarity
PCI: use _CRS for PCI resource allocation
PCI: avoid P2P prefetch window for expansion ROMs
PCI: skip ISA ioresource alignment on some systems
PCI: remove transparent bridge sizing
pci: write file size to inode on proc bus file write
pci: use size stored in proc_dir_entry for proc bus files
pci: implement "pci=noaer"
PCI: fix IDE legacy mode resources
MSI: Use correct data offset for 32-bit MSI in read_msi_msg()
PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code
PCI: i386: Compaq EVO N800c needs PCI bus renumbering
PCI: Remove no longer correct documentation regarding MSI vector assignment
PCI: re-enable onboard sound on "MSI K8T Neo2-FIR"
PCI: quirk_vt82c586_acpi: Omit reading PCI revision ID
PCI: quirk amd_8131_mmrbc: Omit reading pci revision ID
cpqphp: Use PCI_CLASS_REVISION instead of PCI_REVISION_ID for read
...
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (75 commits)
PM: merge device power-management source files
sysfs: add copyrights
kobject: update the copyrights
kset: add some kerneldoc to help describe what these strange things are
Driver core: rename ktype_edd and ktype_efivar
Driver core: rename ktype_driver
Driver core: rename ktype_device
Driver core: rename ktype_class
driver core: remove subsystem_init()
sysfs: move sysfs file poll implementation to sysfs_open_dirent
sysfs: implement sysfs_open_dirent
sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir
sysfs: make sysfs_root a regular directory dirent
sysfs: open code sysfs_attach_dentry()
sysfs: make s_elem an anonymous union
sysfs: make bin attr open get active reference of parent too
sysfs: kill unnecessary NULL pointer check in sysfs_release()
sysfs: kill unnecessary sysfs_get() in open paths
sysfs: reposition sysfs_dirent->s_mode.
sysfs: kill sysfs_update_file()
...
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (142 commits)
USB: fix race in autosuspend reschedule
atmel_usba_udc: Keep track of the device status
USB: Nikon D40X unusual_devs entry
USB: serial core should respect driver requirements
USB: documentation for USB power management
USB: skip autosuspended devices during system resume
USB: mutual exclusion for EHCI init and port resets
USB: allow usbstorage to have LUNS greater than 2Tb
USB: Adding support for SHARP WS011SH to ipaq.c
USB: add atmel_usba_udc driver
USB: ohci SSB bus glue
USB: ehci build fixes on au1xxx, ppc-soc
USB: add runtime frame_no quirk for big-endian OHCI
USB: funsoft: Fix termios
USB: visor: termios bits
USB: unusual_devs entry for Nikon DSC D2Xs
USB: re-remove <linux/usb_sl811.h>
USB: move <linux/usb_gadget.h> to <linux/usb/gadget.h>
USB: Export URB statistics for powertop
USB: serial gadget: Disable endpoints on unload
...
This patch resolves a kexec boot failure that can occur because
no ATAGs are passed in to the kexec'd kernel. Currently the
newly-kexec'd kernel may fail if it requires specific ATAGs, or
it may fail because the fixed memory location at which it expects
to find the ATAGs may contain random data instead of ATAGs.
The patch ensures that any ATAGs passed to the current kernel
at boot time are copied to a static buffer, and are copied back
when kexec copies the new kernel into place. Thus the new
kernel sees the same ATAGs from kexec and the boot loader.
The boot parameters are copied without regard to type, content,
or length -- this patch's scope is limited soley to saving and
restoring a fixed-size block of memory containing the kernel's
boot parameters. Additional functionality to examine, alter, or
replace the ATAGs (using kexec, for example) can be implemented
by manipulating the static buffer containing the preserved ATAGs.
Note: the size of the buffer (1.5KB) is selected to comfortably
hold one of each ATAG type, including a maximum-length command
line and the maximum number of ATAG_MEM structures currently
supported by the kernel. Should an ATAG list exceed that limit,
the list will be silently truncated to that limit (to do other-
wise at that point in the boot process would make a simple
problem exceedingly complicated).
[Note: this is the same patch as 4579, modified to accomodate
the ATAG changes introduced in 2.6.23]
Signed-off-by: Mike Westerhof <mwester at dls.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
consistent_sync() is used to handle the cache maintainence issues with
DMA operations. Since we've now removed the misuse of this function
from the two MTD drivers, rename it to prevent future mis-use.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix the IRQ numbers of the CF and SDI interface on the S3C2412
and S3C2413. Add support to handle these IRQs properly and
ensure that the SDI controller platform device is correctly
renumbered.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As a consequence registers are now accessed with __raw_{read,write}[bl].
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The semantic of the REGSET macros didn't change, but hopefully
it's more obvious as it's now.
REGGET is changed to return the unshifted value, analogous to
REGSET. REGGETIM behaves as REGGET before. All callers changed.
..._IDX is used to work with registers that need a parameter like
BBU_GCONFb1.
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This implementation conforms to the general GPIO API
introduced in 2.6.21.
This patch was signed-of by David Brownell before I exported the functions
using EXPORT_SYMBOL.
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add the INFORM register block which are retained
over sleep.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix unbalanced parenthesis.
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
"extern inline" will have different semantics with gcc 4.3.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch_decomp_setup() does not understand the new tagged lists
for parameter setup. It's fixed in using the older param struct.
This patch adds support for tagged lists and allows the older
param struct too.
Signed-off-by: Alan Hourihane <alanh@fairlite.demon.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] Don't take semaphore in cpufreq_quick_get()
[CPUFREQ] Support different families in fid/did to frequency conversion
[CPUFREQ] cpufreq_stats: misc cpuinit section annotations
[CPUFREQ] implement !CONFIG_CPU_FREQ stub for cpufreq_unregister_notifier()
[CPUFREQ] mark hotplug notifier callback as __cpuinit
[CPUFREQ] Only check for transition latency on problematic governors (kconfig fix)
[CPUFREQ] allow ondemand and conservative cpufreq governors to be used as default
[CPUFREQ] move policy's governor initialisation out of low-level drivers into cpufreq core
[CPUFREQ] Longhaul - Add support for PM133 northbridge
[CPUFREQ] x86: use num_online_nodes to get physical cpus numbers for
Fix the problem that kdump on INIT causes a kernel panic if kdump
kernel image is not configured. The cause of this problem is
machine_kexec_on_init() is using printk in INIT context. It should
use ia64_mca_printk() instead.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
SAL_CALL() always calls through the ia64_sal function pointer. I am adding
new functionality that needs the same conventions as SAL_CALL (FP regs
saved/restored, sal_lock acquired, etc), but doesn't use the ia64_sal
function pointer.
This patch pulls the body of SAL_CALL out into a new "IA64_FW_CALL" that
takes care of these calling conventions, but allows the caller to specify
either ia64_sal or some other firmware entry point.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
