Commit Graph

176281 Commits

Author SHA1 Message Date
Mike Frysinger
b1740549d4 Blackfin: BF52x: unify def/cdef headers
Whole lot of duplicated code here just went bye bye.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:16:13 -05:00
Mike Frysinger
7eb87fd3f1 Blackfin: BF537: push down error masks to avoid namespace pollution
The error masks are only needed in the BF537 demux error code, so instead
of needing all the short peripheral defines in global space, push these
masks into the one file where they are actually needed.  This fixes a
bunch of define collisions with common code (can/serial/etc...).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Barry Song <barry.song@analog.com>
2009-12-15 00:16:11 -05:00
Yi Li
578d36f5e1 Blackfin: SMP: don't start up core b until its state has been completely onlined
When testing PREEMPT_RT kernel on BF561-EZKit, the kernel blocks while
booting.  When the kernel initializes the ethernet driver, it sleeps and
never wakes up.

The issue happens when the kernel waits for a timer for Core B to timeout
(the timers are per-cpu based: static DEFINE_PER_CPU(struct tvec_base *,
tvec_bases) = &boot_tvec_bases).

However, the ksoftirqd thread for Core B (note, the ksoftirqd thread is
also per-cpu based) cannot work properly, and the timers for Core B never
times out.

When ksoftirqd() for the first time runs on core B, it is possible core A
is still initializing core B (see smp_init() -> cpu_up() -> __cpu_up()).
So the "cpu_is_offline()" check may return true and ksoftirqd moves to
"wait_to_die".

So delay the core b start up until the per-cpu timers have been set up
fully.

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:16:09 -05:00
Barry Song
ad774b7cb0 Blackfin: convert to asm-generic pci headers
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:16:07 -05:00
Mike Frysinger
2d40292b5a Blackfin: io.h: fix random busted whitespace
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:16:04 -05:00
Barry Song
dd3b0e3e6a Blackfin: dma-mapping.h: flesh out missing DMA mapping functions
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:16:01 -05:00
Barry Song
a00b4fe5ce Blackfin: workaround anomaly 05000310
While fetching instructions at the boundary of L1 instruction SRAM, a false
External Memory Addressing Error might be triggered.  We should ignore this
and continue on our way to avoid random crashes.

Because hardware errors are not exact in the Blackfin architecture, we need
to catch a few more common cases when the code flow changes and the signal
is finally delivered.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:59 -05:00
Mike Frysinger
340a1be1ee Blackfin: drop ptrace() write support for fixed code/bootrom
These regions are either read-only and won't work anyways (bootrom), or
we don't want people screwing with them because they're shared between
all processes (fixed code).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:57 -05:00
Barry Song
e187837b6f Blackfin: MPU: support XIP in async flash memory
The NOMPU code already supported executing in the async banks, so this
brings the MPU code in line.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:54 -05:00
Barry Song
d45e8db1b2 Blackfin: drop 4KB reserve at end of memory
The point of this small chunk was to avoid anomaly 05000310.  This never
really seemed to do what it was intended though -- no valid CPLBs exist
over the reserved memory, and there is often memory before it anyways (due
to the uClinux MTD and/or reserved DMA region).  Plus, it doesn't address
the L1 instruction case.

So drop this chunk as it wastes memory and is affront to humanity.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:50 -05:00
Barry Song
c45c06596e Blackfin: support smaller uncached DMA chunks for memory constrained systems
When working with 8 meg systems, forcing a 1 meg DMA chunk heavily cuts
into the available resources.  So support smaller chunks to better cover
needs for these systems.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:48 -05:00
Mike Frysinger
5df326aca4 Blackfin: push BF5Xx configs down into mach-specific Kconfigs
While we're moving the BF54x code, have the BF54xM variants select the
normal BF54x values so that the rest of the Kconfig tree doesn't need to
check the BF54xM variant everytime it wants to check the BF54x.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:45 -05:00
Mike Frysinger
2f5a086402 Blackfin: finish_atomic_sections: optimize the RTS step
No point in returning to userspace just to have it immediately perform the
RTS step.  We have to update the PC anyways, so do the RTS too.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:42 -05:00
Sonic Zhang
0d5e35940b Blackfin: kgdb: punt dead code
None of these vars/funcs were being used.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:40 -05:00
Mike Frysinger
e34132f40b Blackfin: reject NULL callback in set_dma_callback()
It makes no sense to call this function with a NULL callback.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:37 -05:00
Mike Frysinger
f69b2d7e97 bfin-otp: add BF51x to the supported arch list
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:35 -05:00
Mike Frysinger
43acb9cdef Blackfin: punt dead/unused flash mem_init settings
I don't think these defines were ever used.  At any rate, we have common
bit defines for all parts as well as a Kconfig option to declare the EBIU
async timings, and no one has really complained about this so far.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:33 -05:00
Mike Frysinger
8c0b4351cc Blackfin: gptimers: use unsigned timer/group ids
Since we always use these ids as unsigned values, and we have some assert
code to make sure they don't exceed a limit, avoid signed issues.

Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:30 -05:00
Robin Getz
dbc5e6989e Blackfin: don't walk VMAs when oopsing
If we're double faulting, then we have to assume the VMAs are not safe as
broken pointers here will prevent full trace output for the double fault.
Shouldn't be a big problem though as rarely is a double fault caused by
code in userspace.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:28 -05:00
Mike Frysinger
e92d32fcb9 Blackfin: force BFD target when linking modules
This allows us to use any Blackfin toolchain to create kernel modules
(such as the FDPIC bfin-linux-uclibc toolchain).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:25 -05:00
Mike Frysinger
ee3773367b Blackfin: comment the FDPIC PTRACE defines
This matches similar documentation for the FRV FDPIC code.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:23 -05:00
Philippe Gerum
2c29661e0b Blackfin/ipipe: update version stamp
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Li Yi <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:21 -05:00
Philippe Gerum
4815b883ed Blackfin/ipipe: introduce support for CONFIG_MPU
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Li Yi <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:18 -05:00
Philippe Gerum
7d4a005c43 Blackfin/ipipe: fix forward ref to barrier()
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Li Yi <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:15 -05:00
Philippe Gerum
d2685fb7b4 Blackfin/ipipe: prepare status bitops for SMP support
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Li Yi <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:12 -05:00
Valentin Yakovenkov
ab843c7940 Blackfin: add support for the Acvilon BF561 board
Signed-off-by: Valentin Yakovenkov <yakovenkov@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:10 -05:00
Mike Frysinger
b2e8dbd204 Blackfin: add an uncompressed vmImage target
This is useful for quick tests where networks are faster than compression,
and/or the compression code is broken.

Reported-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:08 -05:00
Mike Frysinger
13a1320cf5 Blackfin: don't give CPU its own line in traps output
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:05 -05:00
Mike Frysinger
4b60779d5e Blackfin: add an example showing how to use the gptimers API
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:04 -05:00
Robin Getz
7a1a8cc190 Blackfin: announce current cpu rev when booting
User reports rarely include full information, so include this important
tidbit up front.  It's also good to know at a glance in general.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:15:01 -05:00
Mike Frysinger
00d2460454 Blackfin: unify DMA masks
Every Blackfin variant has the same DMA bit masks, so avoid duplicating
them over and over in each mach header.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:59 -05:00
Michael Hennerich
c6feb76828 Blackfin: fix typo in isp1760 platform name
The driver changed from "isp1760-hcd" to "isp1760", so update resources
to match.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:55 -05:00
Mike Frysinger
a8e8e49168 Blackfin: unify duplicated power masks
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:53 -05:00
Mike Frysinger
761ec44add Blackfin: pull in asm/dpmc.h for power defines
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:50 -05:00
Mike Frysinger
2abdf79115 Blackfin: H8606/ip0x: drop redundant SPI ctl_reg settings
No need to set MSTR in .ctl_reg as the Blackfin SPI bus driver does this
already for all parts.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:49 -05:00
Mike Frysinger
cfed440997 Blackfin: BF54x: punt useless "masks" for count/address MMRs
There's no point in having mask defines when the entire MMR value is a
count or address.  i.e. applying a mask of -1 is pointless.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:45 -05:00
Mike Frysinger
e153a97c21 Blackfin: punt unused MXVR masks
There are no MXVR device drivers, and if someday there is, we can put
these in a dedicated header rather than polluting the global namespace.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:43 -05:00
Mike Frysinger
cd32cc7362 Blackfin: punt OTP MMRs
People should not be accessing OTP MMRs directly.  They should instead go
through the Blackfin ROM helper functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:40 -05:00
Mike Frysinger
b1fa2e8f62 Blackfin: BF51x: dump non-existent SPI/NFC MMRs
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:39 -05:00
Mike Frysinger
341a1fc0d1 Blackfin: scrub unused watchdog mmr masks
The watchdog code doesn't need these, and the other parts had these
punted, so keep the global namespace clean.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:36 -05:00
Mike Frysinger
1915b6c0ae Blackfin: scrub unused RTC masks
The RTC driver code doesn't need these, and the other parts had these
punted, so keep the global namespace clean.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:33 -05:00
Mike Frysinger
60883e28b3 Blackfin: unify BF547/8/9 headers
No point in duplicating entire lists when we can simply tail into other
parts for most of the MMRs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:31 -05:00
Mike Frysinger
4ed250a563 Blackfin: fix some BF547 header copy & paste typos
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:28 -05:00
Mike Frysinger
5da8a3dc48 Blackfin: rename BF542 host dma defines
All the other BF54x parts had these defines renamed to avoid collision,
but it looks the BF542 was missed somehow.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:25 -05:00
Michael Hennerich
aaa225e0aa Blackfin: punt cache lock documentation
The cache lock code was unused and punted, so punt the documentation too.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:23 -05:00
Mike Frysinger
17a1b5e374 Blackfin: coreb: switched to unlocked_ioctl
We don't need the BKL and now people will stop looking at this.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:21 -05:00
Mike Frysinger
d2e015d65f Blackfin: convert DMA mutex to an atomic and drop redundant code
The DMA channel status field was encoding redundant info wrt the DMA MMR
config register, and it was doing an incomplete job of checking all DMA
channels (some drivers write directly to the config register).  So drop
the tristate field in favor of a binary atomic field.  This simplifies
the code in general, removes the implicit need for sleeping, and forces
the suspend code to handle all channels properly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:18 -05:00
Michael Hennerich
adfc046740 Blackfin: update bfin_rotary defines
The driver was moved during the merge process, so update the defines to
match the new location.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:16 -05:00
Mike Frysinger
bbc51e97d3 Blackfin: push down asm/ includes and out of bfin-global.h
Avoid including unnecessary headers all the time as well as circular
includes with core requirements.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:14 -05:00
Mike Frysinger
872d024b40 Blackfin: pull in firmware Kconfig
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-12-15 00:14:12 -05:00