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This patch (as1623) removes the ehci_port_power() routine and all the
places that call it. There's no reason for ehci-hcd to change the
port power settings; the hub driver takes care of all that stuff.
There is one exception: When the controller is resumed from
hibernation or following a loss of power, the ports that are supposed
to be handed over to a companion controller must be powered on first.
Otherwise the handover won't work. This process is not visible to the
hub driver, so it has to be handled in ehci-hcd.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch defines new ioctl codes TIOCGPKT, TIOCGPTLCK,
TIOCGEXCL for fetching pty's packet mode and locking state,
and exclusive mode of tty.
[ No real handlers for the codes though, this will be
addressed in another patch for easier review and
bisectability ]
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 2be350fa (MIPS: Alchemy: use the ehci platform driver) and commit
e223a4cc (MIPS: Alchemy: use the OHCI platform driver) have change the Alchemy
platform code to register an EHCI and OHCI platform driver, the defconfig file
must thus be accordingly updated to build these drivers by default.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A previous patch converted the Alchemy platform to use the OHCI and EHCI
platform drivers. As a result, all the common logic to handle USB present in
drivers/usb/host/alchemy-common.c has no reason to remain here, so we move it
to arch/mips/alchemy/common/usb.c which is a more appropriate place. This
change was suggested by Manuel Lauss.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert the Alchemy platform to register the ohci-platform driver, now that
the ohci-platform driver properly handles the specific ohci-au1xxx resume
from suspend case.
This also greatly simplifies the power_{on,off} callbacks and make them
work on platform device id instead of checking the OHCI controller base
address like what was done in ohci-au1xxx.c.
Impacted defconfigs are also updated accordingly to select the OHCI platform
driver.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The OHCI platform driver is suitable for use by the Netlogic XLR platform
so use this driver instead of the OHCI XLS platform driver.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change the PNX8550 platform code to register an ohci-platform driver instead
of ohci-pnx8550 since the ohci-platform is suitable for use.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use the ehci platform driver power_{on,suspend,off} callbacks to perform the
USB block gate enabling/disabling as what the ehci-au1xxx.c driver does.
Update the db1200 and db1300 defconfigs to now select the EHCI platform
driver.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The EHCI platform driver is suitable for use by the Netlogic XLR platform
since there is nothing specific that the EHCI XLR platform driver does.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Loongson 1B EHCI driver does nothing more than what the EHCI platform
driver already does, so use the generic implementation.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a preparing step for adding serial flash support.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Pull MIPS fixes from Ralf Baechle:
"Random small fixes across the MIPS code."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: CMP: Fix physical core number calculation logic
MIPS: JZ4740: Forward declare struct uart_port in header.
MIPS: JZ4740: Fix '#include guard' in serial.h
MIPS: hugetlbfs: Fix hazard between tlb write and pagemask restoration.
MIPS: Restore pagemask after dumping the TLB.
MIPS: Hugetlbfs: Handle huge pages correctly in pmd_bad()
MIPS: R5000: Fix TLB hazard handling.
MIPS: tlbex: Deal with re-definition of label
MIPS: Make __{,n,u}delay declarations match definitions and generic delay.h
The CPUNum Field in EBase register is 10bit wide, so after 1 bit right
shift, the mask value should be 0x1ff.
Signed-off-by: jerin jacob <jerinjacobk@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4420/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Place comments in:
arch/mips/include/asm/Kbuild
arch/tile/include/arch/Kbuild
to make them non-empty so that the patch program doesn't remove them when it
reduces them to nothing.
Possibly they should be just deleted, but it's possible that they'll acquire
generic-y or genhdr-y lines in future, so I'm keeping them around for the
moment.
Note that MIPS will compile happily if the file is deleted instead. I haven't
tested TILE, but I suspect it will be the same there.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ralf Baechle <ralf@linux-mips.org>
cc: Chris Metcalf <cmetcalf@tilera.com>
On some CPU the write to pagemask might complete before the TLB write
instruction reads from the pagemask register.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
R5000 and the Nevada CPUs (RM5230, RM5231, RM5260, RM5261, RM5270 and
RM5271) are basically the same CPU core and all are documented to require
two instructions separating a write to c0_pagemask, c0_entryhi, c0_entrylo0,
c0_entrylo1 or c0_index.
So far we were only providing on cycle before / after a TLBR/TLBWI
for R5000 but 3 cycles before and 1 cycles after for the Nevadas.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The microassembler used in tlbex.c does not notice if a label is redefined
resulting in relocations against such labels silently missrelocated.
The issues exists since commit add6eb04776db4189ea89f596cbcde31b899be9d
[Synthesize TLB exception handlers at runtime.] in 2.6.10 and went unnoticed
for so long because the relocations for the affected branches got computed
to do something *almost* sensible.
The issue affects R4000, R4400, QED/IDT RM5230, RM5231, RM5260, RM5261,
RM5270 and RM5271 processors.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
At some recent point arch/mips/include/asm/delay.h has started being
included into csrc-octeon.c where the __?delay() functions are defined.
This causes a compile failure due to conflicting declarations and
definitions of the functions.
It turns out that the generic definitions in arch/mips/lib/delay.c also
conflict.
Proposed fix: Declare the functions to take unsigned long parameters
just like asm-generic (and x86) does. Update __delay to agree
(__ndelay and __udelay need no change).
Bonus: Get rid of 'inline' from __delay() definition, as it is globally
visible, and the compiler should be making this decision itself (it does
in fact inline the function without being told to).
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4354/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This version contains a few updates by David Daney, in particular it's
now using __builtin_frame_address() instead of asm() which depending
on personal taste, is slightly more appealing.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Pull MIPS update from Ralf Baechle:
"Cleanups and fixes for breakage that occured earlier during this merge
phase. Also a few patches that didn't make the first pull request.
Of those is the Alchemy work that merges code for many of the SOCs and
evaluation boards thus among other code shrinkage, reduces the number
of MIPS defconfigs by 5."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (22 commits)
MIPS: SNI: Switch RM400 serial to SCCNXP driver
MIPS: Remove unused empty_bad_pmd_table[] declaration.
MIPS: MT: Remove kspd.
MIPS: Malta: Fix section mismatch.
MIPS: asm-offset.c: Delete unused irq_cpustat_t struct offsets.
MIPS: Alchemy: Merge PB1100/1500 support into DB1000 code.
MIPS: Alchemy: merge PB1550 support into DB1550 code
MIPS: Alchemy: Single kernel for DB1200/1300/1550
MIPS: Optimize TLB refill for RI/XI configurations.
MIPS: proc: Cleanup printing of ASEs.
MIPS: Hardwire detection of DSP ASE Rev 2 for systems, as required.
MIPS: Add detection of DSP ASE Revision 2.
MIPS: Optimize pgd_init and pmd_init
MIPS: perf: Add perf functionality for BMIPS5000
MIPS: perf: Split the Kconfig option CONFIG_MIPS_MT_SMP
MIPS: perf: Remove unnecessary #ifdef
MIPS: perf: Add cpu feature bit for PCI (performance counter interrupt)
MIPS: perf: Change the "mips_perf_event" table unsupported indicator.
MIPS: Align swapper_pg_dir to 64K for better TLB Refill code.
vmlinux.lds.h: Allow architectures to add sections to the front of .bss
...
Pull module signing support from Rusty Russell:
"module signing is the highlight, but it's an all-over David Howells frenzy..."
Hmm "Magrathea: Glacier signing key". Somebody has been reading too much HHGTTG.
* 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (37 commits)
X.509: Fix indefinite length element skip error handling
X.509: Convert some printk calls to pr_devel
asymmetric keys: fix printk format warning
MODSIGN: Fix 32-bit overflow in X.509 certificate validity date checking
MODSIGN: Make mrproper should remove generated files.
MODSIGN: Use utf8 strings in signer's name in autogenerated X.509 certs
MODSIGN: Use the same digest for the autogen key sig as for the module sig
MODSIGN: Sign modules during the build process
MODSIGN: Provide a script for generating a key ID from an X.509 cert
MODSIGN: Implement module signature checking
MODSIGN: Provide module signing public keys to the kernel
MODSIGN: Automatically generate module signing keys if missing
MODSIGN: Provide Kconfig options
MODSIGN: Provide gitignore and make clean rules for extra files
MODSIGN: Add FIPS policy
module: signature checking hook
X.509: Add a crypto key parser for binary (DER) X.509 certificates
MPILIB: Provide a function to read raw data into an MPI
X.509: Add an ASN.1 decoder
X.509: Add simple ASN.1 grammar compiler
...
Cleanups
Clean up compile warnings in kgdboc.c and x86/kernel/kgdb.c
Add module event hooks for simplified debugging with gdb
Fixes
Fix kdb to stop paging with 'q' on bta and dmesg
Fix for data that scrolls off the vga console due to line wrapping
when using the kdb pager
New
The debug core registers for kernel module events which allows a
kernel aware gdb to automatically load symbols and break on entry
to a kernel module
Allow kgdboc=kdb to setup kdb on the vga console
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Merge tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
Pull KGDB/KDB fixes and cleanups from Jason Wessel:
"Cleanups
- Clean up compile warnings in kgdboc.c and x86/kernel/kgdb.c
- Add module event hooks for simplified debugging with gdb
Fixes
- Fix kdb to stop paging with 'q' on bta and dmesg
- Fix for data that scrolls off the vga console due to line wrapping
when using the kdb pager
New
- The debug core registers for kernel module events which allows a
kernel aware gdb to automatically load symbols and break on entry
to a kernel module
- Allow kgdboc=kdb to setup kdb on the vga console"
* tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
tty/console: fix warnings in drivers/tty/serial/kgdboc.c
kdb,vt_console: Fix missed data due to pager overruns
kdb: Fix dmesg/bta scroll to quit with 'q'
kgdboc: Accept either kbd or kdb to activate the vga + keyboard kdb shell
kgdb,x86: fix warning about unused variable
mips,kgdb: fix recursive page fault with CONFIG_KPROBES
kgdb: Add module event hooks
getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.
For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.
This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.
Later, we'll add other information to the struct as it becomes
convenient.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This fault was detected using the kgdb test suite on boot and it
crashes recursively due to the fact that CONFIG_KPROBES on mips adds
an extra die notifier in the page fault handler. The crash signature
looks like this:
kgdbts:RUN bad memory access test
KGDB: re-enter exception: ALL breakpoints killed
Call Trace:
[<807b7548>] dump_stack+0x20/0x54
[<807b7548>] dump_stack+0x20/0x54
The fix for now is to have kgdb return immediately if the fault type
is DIE_PAGE_FAULT and allow the kprobe code to decide what is supposed
to happen.
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Pull pile 2 of execve and kernel_thread unification work from Al Viro:
"Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for
several more architectures plus assorted signal fixes and cleanups.
There'll be more (in particular, real fixes for the alpha
do_notify_resume() irq mess)..."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)
alpha: don't open-code trace_report_syscall_{enter,exit}
Uninclude linux/freezer.h
m32r: trim masks
avr32: trim masks
tile: don't bother with SIGTRAP in setup_frame
microblaze: don't bother with SIGTRAP in setup_rt_frame()
mn10300: don't bother with SIGTRAP in setup_frame()
frv: no need to raise SIGTRAP in setup_frame()
x86: get rid of duplicate code in case of CONFIG_VM86
unicore32: remove pointless test
h8300: trim _TIF_WORK_MASK
parisc: decide whether to go to slow path (tracesys) based on thread flags
parisc: don't bother looping in do_signal()
parisc: fix double restarts
bury the rest of TIF_IRET
sanitize tsk_is_polling()
bury _TIF_RESTORE_SIGMASK
unicore32: unobfuscate _TIF_WORK_MASK
mips: NOTIFY_RESUME is not needed in TIF masks
mips: merge the identical "return from syscall" per-ABI code
...
Conflicts:
arch/arm/include/asm/thread_info.h
The new SCCNXP driver supports the SC2681 chips used in RM400 machines.
We now use the new driver instead of the old SC26xx driver.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4417/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
LD arch/mips/pci/built-in.o
WARNING: arch/mips/pci/built-in.o(.devinit.text+0x2a0): Section mismatch in reference from the function malta_piix_func0_fixup() to the variable .init.data:pci_irq
The function __devinit malta_piix_func0_fixup() references
a variable __initdata pci_irq.
If pci_irq is only used by malta_piix_func0_fixup then
annotate pci_irq with a matching annotation.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Originally added in 05b541489c48e7fbeec19a92acf8683230750d0a [Merge with
Linux 2.5.5.] over 10 years ago but never been used.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The PB1100/1500 are similar to their DB-cousins but with a few
more devices on the bus.
This patch adds PB1100/1500 support to the existing DB1100/1500
code.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: lnux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4338/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The PB1550 is more or less a DB1550 without the PCI IDE controller,
a more complicated (read: configurable) Flash setup and some other
minor changes. Like the DB1550 it can be automatically detected by
reading the CPLD ID register bits.
This patch adds PB1550 detection and setup to the DB1550 code.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4337/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Combine support for the DB1200/PB1200, DB1300 and DB1550 boards into
a single kernel image.
defconfig-generated image verified on DB1200, DB1300 and DB1550.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4335/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
We don't have to do a separate shift to eliminate the software bits,
just rotate them into the fill and they will be ignored.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4294/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Most supported systems currently hardwire cpu_has_dsp to 0, so we also
can disable support for cpu_has_dsp2 resulting in a slightly smaller
kernel.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
[ralf@linux-mips.org: This patch really only detects the ASE and passes its
existence on to userland via /proc/cpuinfo. The DSP ASE Rev 2. adds new
resources but no resources that would need management by the kernel.]
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4165/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On a dual issue processor GCC generates code that saves a couple of
clock cycles per loop if we rearrange things slightly. Checking for
p != end saves a SLTU per loop, moving the increment to the middle can
let it dual issue on multi-issue processors.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4249/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add hardware performance counter support to kernel "perf" code for
BMIPS5000. The BMIPS5000 performance counters are similar to MIPS
MTI cores, so the changes were mostly made in perf_event_mipsxx.c
which is typically for MTI cores.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4109/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Split the Kconfig option CONFIG_MIPS_MT_SMP into CONFIG_MIPS_MT_SMP
and CONFIG_MIPS_PERF_SHARED_TC_COUNTERS so some of the code used
for performance counters that are shared between threads can be used
for MIPS cores that are not MT_SMP.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4108/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The #ifdef for CONFIG_HW_PERF_EVENTS is not needed because the
Makefile will only compile the module if this config option is set.
This means that the code under #else would never be compiled. This
may have been done to leave the original broken code around for
reference, but the FIXME comment above the code already shows the
broken code.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4107/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The PCI (Program Counter Interrupt) bit in the "cause" register
is mandatory for MIPS32R2 cores, but has also been added to some R1
cores (BMIPS5000). This change adds a cpu feature bit to make it
easier to check for and use this feature.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4106/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Change the indicator from 0xffffffff in the "event_id" member to
zero in the "cntr_mask" member. This removes the need to initialize
entries that are unsupported. This also solves a problem where the
number of entries in the table was increased based on a globel enum
used for all platforms, but the new unsupported entries were not added
for mips. This was leaving new table entries of all zeros that we not
marked UNSUPPORTED.
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4110/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
