Michael says that some bugs are crashes in tcp_v4_send_reset.
There's a missing clobber of "CC" in our checksum assembly
statement; fixing this makes the generated code look much saner.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
push cache flushing up to dma_memcpy() so that we call the flush
functions just once
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
move most dma functions into static inlines since they are vastly 1
liners that get/set a value in a structure
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
set_dma_callback: do not store .irq if request_irq() failed so we dont
turn around and attempt to free_irq() it later on in free_dma()
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
- unify all dma in/out functions (takes ~35 lines of code now)
- unify dma_memcpy with dma in/out functions (1 place that touches MDMA0
registers)
- add support for 32bit transfers
- cleanup dma_memcpy code to be much more readable
- irqs are disabled only while programming MDMA registers rather than
the entire transaction
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Check pointers in safe_dma_memcpy as this is the entry point for user-space code
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
All slaves I'm aware of should support at least 100kHz
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This device shouldn't be considered as an alternative to a Memory Mapped
or built-in Ethernet MAC. Throughput is slow (~460kByte/s) while generating
a very high system load (~60%).
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Fix a few problems I discovered when building a kernel with upstream CVS
binutils.
We have to add the NOTES macro to our linker script, since a kernel
built with --build-id is otherwise unable to boot. Last time NOTES was
added, it broke things, but the definition of the macro has changed not
to rely on parts of the linker script that aren't present on Blackfin.
I also noticed that _l2_lma_start does not point into the kernel image,
but rather somewhere in L1/L2 space, which seems unintended. Also, when
the L2 section was added to the linker script, the part following it which
computes then length of the init section was not updated.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Remove all traces of the relocation stack. It's been removed from
binutils for years now.
Add a sanity overflow check to pcrel24 relocations to catch modules that
were built without -mlong-calls.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Tweak the BUG_ON() check to allow for equal values since the way pos is
handled ... it is always indexed and post incremented
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
use scm changelog rather than comment blocks in files
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
- remove duplicated code and headers
- add option allowing arbitrary SDRAM/DDR Timing parameters.
- mark automatically calculated timings as EXPERIMENTAL
- fix comment header block
Related to BUGs:
- kernel boot up fails with CONFIG_BFIN_KERNEL_CLOCK item on.
- kernel does not boot if re-program clocks
[ Mike Frysinger <vapier.adi@gmail.com>
- fix comment header
- mark do_sync static
- document the DMA shutdown
- simplify SIC_IWR handling
- fix ANOMALY_05000265 handling to work as intended ]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
[Mike Frysinger <vapier.adi@gmail.com>:
- use KERN_NOTICE when using gpios as both irq and non
rather than KERN_ERR
- embedded newlines in printk() does not fly]
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Bernd Schmidt