summaryrefslogtreecommitdiff
path: root/arch/blackfin
AgeCommit message (Collapse)AuthorFilesLines
2011-03-04Blackfin: iflush: update anomaly 05000491 workaroundMike Frysinger1-0/+2
Recent feedback from design says we need three NOPs in the hardware loop. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-03-04Blackfin: outs[lwb]: make sure count is greater than 0Mike Frysinger1-4/+12
Some devices will use the outs* funcs with a length of zero, so make sure we do not write any data in that case. Reported-by: Gilbert Inho <gneny@edevice.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-02-03serial: bfin_5xx: split uart RX lock from uart port lock to avoid deadlockSonic Zhang1-0/+2
The RX lock is used to protect the RX buffer from concurrent access in DMA mode between the timer and RX interrupt routines. It is independent from the uart lock which is used to protect the TX buffer. It is possible for a uart TX transfer to be started up from the RX interrupt handler if low latency is enabled. So we need to split the locks to avoid deadlocking in this situation. In PIO mode, the RX lock is not necessary because the handle_simple_irq and handle_level_irq functions ensure driver interrupt handlers are called once on one core. And now that the RX path has its own lock, the TX interrupt has nothing to do with the RX path, so disabling it at the same time. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-21blackfin: Use generic irq KconfigThomas Gleixner1-11/+3
No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Frysinger <vapier@gentoo.org>
2011-01-21genirq: Remove __do_IRQThomas Gleixner1-3/+0
All architectures are finally converted. Remove the cruft. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Mike Frysinger <vapier@gentoo.org> Cc: David Howells <dhowells@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Michal Simek <monstr@monstr.eu> Acked-by: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Chen Liqin <liqin.chen@sunplusct.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jeff Dike <jdike@addtoit.com>
2011-01-20kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERTDavid Rientjes28-28/+28
The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: David Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13Merge branch 'for-next' of ↵Linus Torvalds2-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) Documentation/trace/events.txt: Remove obsolete sched_signal_send. writeback: fix global_dirty_limits comment runtime -> real-time ppc: fix comment typo singal -> signal drivers: fix comment typo diable -> disable. m68k: fix comment typo diable -> disable. wireless: comment typo fix diable -> disable. media: comment typo fix diable -> disable. remove doc for obsolete dynamic-printk kernel-parameter remove extraneous 'is' from Documentation/iostats.txt Fix spelling milisec -> ms in snd_ps3 module parameter description Fix spelling mistakes in comments Revert conflicting V4L changes i7core_edac: fix typos in comments mm/rmap.c: fix comment sound, ca0106: Fix assignment to 'channel'. hrtimer: fix a typo in comment init/Kconfig: fix typo anon_inodes: fix wrong function name in comment fix comment typos concerning "consistent" poll: fix a typo in comment ... Fix up trivial conflicts in: - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c) - fs/ext4/ext4.h Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
2011-01-10Blackfin: encode cpu-rev into uImage nameMike Frysinger2-3/+6
Encoding the cpu family name apparently confuses people when they try to boot an image on a sub-variant, so encode the specific cpu name and the silicon rev instead. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf54x: don't ack GPIO ints when unmasking themMike Frysinger1-1/+0
When unmasking a GPIO interrupt on a BF54x part, the code will implicitly ack any pending interrupts. This is not what unmasking should do and can cause people to miss interrupts from their devices, so punt the code. Reported-by: Rutger Hofman <rutger@cs.vu.nl> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: sram_free_with_lsl: do not ignore return value of sram_freeMike Frysinger1-9/+9
If there was an error in the lower free functions, we need to pass that back up so the calling process is able to check things. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: boards: add missing "static" to peripheral listsMike Frysinger26-95/+95
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: DNP5370: new board portAndreas Schallenberg4-0/+546
Signed-off-by: Andreas Schallenberg <Andreas.Schallenberg@3alitydigital.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf518f-ezbrd: fix dsa resourcesSonic Zhang1-9/+8
On bf518-ezbrd with DSA Ethernet switch enabled, on chip MAC is connecting to phy at address 3. If allowing the netdevice framework to probe both 3 phys of the switch when registering MAC phy, phy at address 1 is checked for link active status other than phy at address 3. If connecting a cable to port 2 and leave port 1 open, link status in phy 2 and 3 are online, while that in phy 1 is offline. So, the phy layer sets wrong offline status to net device on port 3. In this case, no data can be transferred via ethernet port 2. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: move "-m elf32bfin" to general LDFLAGSMike Frysinger1-1/+1
Common code now invokes the linker directly which causes build failures when using an FDPIC toolchain. So move the emulation setting out of the module-specific LDFLAGS and into the common LDFLAGS. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: kgdb_test: make sure to initialize num2Vivi Li1-0/+4
We check its value at runtime, so we want to avoid garbage across runs. Signed-off-by: Vivi Li <vivi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: kgdb: disable preempt schedule when running single step in kgdbSonic Zhang1-1/+7
Otherwise, gdb continue operation after a breakpoint is hit may trap into endless breakpoint. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: kgdb: disable interrupt when single stepping in ADEOSSonic Zhang1-0/+20
When ADEOS and kgdb are both enabled, single step in linux kernel may be scheduled to Xenomai core after return from interrupt handlers. This blocks gdb continue operation after a break point is hit. So, disable interrupt when running gdb single step. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: kgdb: apply anomaly 257 work aroundSonic Zhang1-1/+5
When run kgdb testing, it looks like coreb hangs in single step or trap exception without handling anomaly 05000257 properly on bf561 v0.5. But, the anomaly list says it apply to bf561 v0.4 and bellow. Apply its work around to 0.5 temporarily until the behavior and the root cause can be confirmed by the hardware team. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: fix building IPIPE code when XIP is enabledMike Frysinger1-2/+2
The low level assembly needs to use the pseudo_long_call helper so that we use the right call insn when doing kernel XIP. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: kgdb: flush core internal write buffer before flushinvSonic Zhang1-0/+5
KGDB single step in SMP kernel may hang forever in flushinv without a CSYNC ahead. This is because the core internal write buffers need to be flushed before invalidating the data cache to make sure the insn fetch is not out of sync. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: sport_uart resources: remove unused secondary RX/TX pinsSonic Zhang18-36/+36
The SPORT/UART driver doesn't use the secondary channel pins, so don't try and request them thus keeping other drivers from using them. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: tll6527m: fix spelling in unused code (struct name)Stefan Weil1-1/+1
platfrom -> platform This changes a struct name. The related code is conditionally compiled and won't work because the include file linux/gpio-decoder.h is missing, so removing this code would be an even better solution. If the missing include file is added, it must fix the spelling, too. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf527-ezkit: add adau1373 chip addressSonic Zhang1-0/+5
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: no-mpu: fix masking of small uncached dma regionSonic Zhang1-1/+1
When using an uncached DMA region less than 1 MiB, we try to mask off the whole last 1 MiB for it. Unfortunately, this fails as we forgot to subtract one from the calculated mask, leading to the region still be marked as cacheable. Reported-by: Andrew Rook <andrew.rook@speakerbus.co.uk> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: pm: drop irq save/restore in standby and suspend to mem callbackSteven Miao1-10/+0
Since linux-2.6.31, the kernel suspend framework will do disable_irq/enable_irq, so save/restore irq in standby and suspend to mem callback should be dropped. Otherwise the common code notices things are enabled and complains. Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: dpmc.h: pull in new pll.hMike Frysinger1-0/+2
Any consumer of dpmc.h expects to use VR_CTL, so also pull in the new mach/pll.h header for those functions. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf54x: add MMR layout for PINTMike Frysinger1-0/+22
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf561: SMP: add multicore pll handlersMike Frysinger1-0/+53
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: unify pll.h headersMike Frysinger8-435/+93
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: rewrite IPI handling to avoid memory allocationYi Li3-133/+97
Currently, sending an interprocessor interrupt (IPI) requires building up a message dynamically which means memory allocation. But often times, we will want to send an IPI in low level contexts where allocation is not possible which may lead to a panic(). So create a per-cpu static array for the message queue and use that instead. Further, while we have two supplemental interrupts, we are currently only using one of them. So use the second one for the most common IPI message of all -- smp_send_reschedule(). This avoids ugly contention for locks which in turn would require an IPI message ... In general, this improves SMP performance, and in some cases allows the SMP port to work in places it wouldn't before. Such as the PREEMPT_RT state where the slab is protected by a per-cpu spin lock. If the slab kmalloc/kfree were to put the task to sleep, and that task was actually the IPI handler, then the system falls down yet again. After running some various stress tests on the system, the static limit of 5 messages seems to work. On the off chance even this overflows, we simply panic(), and we can review that scenario to see if the limit needs to be increased a bit more. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: relocate blackfin_core_id() definitionGraf Yang2-4/+3
Since we're breaking apart some inter-header dependencies to avoid more circular loops, move the blackfin_core_id() definition to the func that it is based upon. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: fix build breakage in cache.hMike Frysinger1-0/+2
The SMP code needs "asmlinkage" which linkage.h provides. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: add missing arch_{read,write}_lock_flags helpersGraf Yang1-0/+4
Common code expects these to be defined for SMP ports, so add them. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf561: fix mem_map.h SMP overridesGraf Yang1-7/+9
The BF561 mem_map.h header has the __ASSEMBLY__/CONFIG_SMP checks out of order which leads to build errors for assembly code that happens to include this file. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: tweak platform_request_ipi() usageGraf Yang3-3/+5
This function takes an irq_handler_t function, but the prototype in the header doesn't match the function definition. This is due to the smp headers needing to avoid circular dependencies. So change the function to take a simple pointer. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: fix asm/bitops.h errorsMike Frysinger1-0/+2
The common asm-generic non-atomic bitops.h defines test_bit() for us, but we need to use our own version. So redirect the definition of this func to avoid having to inline the rest of the asm-generic file. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: fix cpumask misbehaviorGraf Yang1-6/+1
The cpu maps are defines provided by common linux/cpumask.h, not local variables. So stop exporting them locally and include the right header for their definition. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: SMP: rename the arch_xxx lock funcs to __raw_xxxGraf Yang2-12/+15
The external functions are named __raw_xxx, not arch_xxx, so rename the prototypes to match reality. This fixes some simple build errors in the bfin_ksyms.c code which exports these helpers to modules. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10serial: bfin_5xx: move resources into board filesSonic Zhang1-0/+12
Rather than maintain Kconfig entries where people have to enter raw numbers and hardcode lists of addresses/pins in the driver itself, push it all to platform resources. This lets us simplify the driver, the Kconfig, and gives board porters greater flexibility. In the process, we need to also start supporting the early platform interface. Not a big deal, but it causes the patch to be bigger than a simple resource relocation. All the Blackfin boards already have their resources updated and in place for this change. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf561: update a few more SIC_SYSCR locationsMike Frysinger2-14/+14
Looks like I missed a few new spots when renaming the SICA macros. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: drop asm/irq.h include from mach headersMike Frysinger7-21/+0
These were only included because of the irq handling of the PLL funcs, and those PLL funcs have been moved out into their own header now. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf51x/bf52x: drop redundant "base" def/cdef headerMike Frysinger8-4953/+4893
The defBF512.h header exists only to include defBF51x_base.h, and it is the only place where defBF51x_base.h is included. So move the contents of the defBF51x_base.h header into the defBF512.h header. Same situation for the other def/cdef pairs. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: clean up mach header includesMike Frysinger45-2142/+1990
The main asm/blackfin.h header will pull in mach/blackfin.h to get all the fun Blackfin defines. So having any of the sub-mach headers trying to include asm/blackfin.h makes no sense -- punt it. The mach/blackfin.h header takes care of including the part-specific def headers which in turn will include any other needed def file. Similarly, it takes care of pulling in the part-specific cdef header. So move this logic out of the blackfin.h when necessary. Further, make sure the cdef headers do not waste time including the def headers again. Since all parts need the common def/cdef headers, move this logic out of the part-specific headers and into the mach/blackfin.h file. Finally, we need to split the BF539 def header since the BF538 does not have MXVR and we don't want to expose those MMRs. So now all parts should have the same behavior: mach/blackfin.h asm/def_LPBlackfin.h part-specific def.h if ! asm asm/cdef_LPBlackfin.h part-specific cdef.h And the sub def/cdef headers only tail into what they need. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf533: merge fio_flag back into normal mach headersMike Frysinger2-55/+41
We don't want the BF533 to be different in terms of its MMR headers, so merge the FIO_FLAG helpers back into the normal place. To avoid circular dependencies with headers, turn the inline C funcs into CPP defines. Not like there will be any code size differences. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf561-ezkit: add SMP defconfigMike Frysinger1-0/+113
Since the SMP code paths tend to compile fail a lot, start a SMP defconfig so our nightly build tools will automatically test it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf533: convert boards to gpio frameworkMike Frysinger3-22/+22
We don't want people banging on MMRs directly. As for the ip0x board, it shouldn't need to muck with the CS pin directly as the Blackfin SPI bus master driver takes care of driving this. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: push gpio (port) defines into common headersMike Frysinger24-601/+282
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: bf54x: drop unused legacy MMR namesMike Frysinger2-24/+0
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: dma: constify MMR pointer arrayMike Frysinger8-8/+8
The array of pointers is never written, so constify it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-10Blackfin: standardize DMAC traffic control MMRs & MDMA MMRsMike Frysinger15-973/+698
Use the same naming convention for DMA traffic MMRs (most were legacy anyways) so we can avoid useless ifdef trees. Same goes for MDMA names -- this actually allows us to undo a bunch of ifdef redirects that existed for this purpose alone. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 21:59:51 +0000