The use of the function brcmf_proto_hdrpull() is moved to the
common part of the driver and consequently it can be removed
from the bus interface.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The bus interface provided a wrapper function to pass a single
packet to the common driver part filling a skb queue with one
packet. For clarity the caller now sets up the skb queue and
call the rx bus interface function.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Several source files (but not all) define the pr_fmt() macro in exactly
the same way. Instead this commit defines it in a header file so driver
logging is consistent.

Cc: Joe Perches <joe@perches.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The call to brcmf_dbg(ERROR, ...) only resulted in a log message
when compiled with -DDEBUG. Error messages are valuable for resolving
issues so this patch replaces it with brcmf_err(...) so they always
end up in the log.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Rework the bus interface between common driver part and bus-specific
driver part. It prepares for adding tracing in bus-specific callback
functions.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NFranky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

on sdio remove the bus_if should be configured for close, so
new data from higher layers will be blocked. Also the access
to bus_if in the watchdog should be checked for null pointer
access on sdio remove.
Reviewed-by: NArend Van Spriel <arend@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

when brcmf_sdbrcm_probe_attach results in error then cleanup
will result in null pointer access. In brcmf_sdbrcm_release and
in brcmf_ops_sdio_remove. This patch fixes order of init and
de-init.
Reviewed-by: NArend Van Spriel <arend@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In brcmf_sdbrcm_probe only error ELINK is seen as error. However
brcmf_bus_start can return many more error codes and all should
result in failed init of driver.
Reviewed-by: NArend Van Spriel <arend@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use int instead of bool as the return type of function
brcmf_sdio_hdparser to explicitly describe error returns.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

brcmf_sdbrcm_wait_for_event is now a one line function and only
used by brcmf_sdbrcm_bus_txctl. Intergrate the function call
wait_event_interruptible_timeout into brcmf_sdbrcm_bus_txctl.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Semaphore sdsem is used to protect consecutive memory access
through SDIO bus. Same functionality is provided by sdio_claim_host/
sdio_release_host interface as well. Replace sdsem with
sdio_claim_host.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Semaphore sdsem which protects consecutive SDIO bus access is used
to lock down unnecessary wide range. Decrease the locking range
provides the capability of parallel processing.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Rxbuf in SDIO interface is used in normal frame and control frame
read. Use dynamically allocated buffer in control frame read path
for post processing to avoid conflicts.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use brcmf_sdio_hdparser to handle header of super frame and sub
frame in glomming frame read.
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

SDIO read non-glomming frame routine handles first frame and
follow up frame read separately. But they share a lot of common
code. This patch abstracts a brcmf_sdio_hdparser function and
optimize the code flow for better readability and future
optimization.
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

SDIO in-band interrupt is level sensitive according to SDIO standard.
When the register interrupt handler gets called by SDIO stack it is
running in non interrupt context and expected to clear the interrupt
from the dongle. Therefore in-band and out-of-band interrupt need to
be handled differently.

Cc: Wei Ni <wni@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Reported-by: NWei Ni <wni@nvidia.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use SDIO host lock to protect the entire communication process
of register access or data read/write rather than function calls
to MMC/SDIO stack only. This can help to avoid unintentional
memory access and unexpected interruption.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Streamline SDIO dpc by removing some unnecessary code path.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Switch SDIO dpc implementation from kernel thread to workqueue for
better performance and compatibility.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Interrupt pending flag used in SDIO bus layer could be used in
multiple processes in different context. Use atomic_t make sure
every interrupt is handled.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove sdio bus sleep mechanism since it is never invoked.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When tx flow is to be blocked due to host interface throttle then
all net if queues should be stopped.
Reviewed-by: NFranky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: NArend Van Spriel <arend@broadcom.com>
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

BCM43241 is an 11abg and 2x2 11n Wifi/BT/FM combo chip that
supports 40MHz channel width. This patch intends to enable
the driver support for the chip through SDIO bus interface.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The commit "brcmfmac: introduce checkdied debugfs functionality"
also introduced a sparse warning:

..../brcmfmac/dhd_sdio.c:3147:45: sparse: cast to restricted __le32

This patch fixes this sparse warning.
Reported-by: NFengguang Wu <wfg@linux.intel.com>
Reviewed-by: NFranky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

BCM4334 is a dualband a/b/g/n WiFi chip support 20MHz/40MHz
channels. This patch adds support for its SDIO interface.
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The nvram data is preprocessed before being sent to the device
and just before sending an additional allocation was done that
assured word alignment of the data. This has moved to the
preprocessing step to reduce allocations and subsequent copying
of the nvram data.
Reviewed-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The nvram file could be parsed directly in the data buffer in the
firmware structure passed by request_firmware function. This patch
gets rid of the redundant memcpy.
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

txglomming alignment is a SDIO bus specific feature. It is more
appropriate to place it in SDIO bus layer instead of common layer.
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

txglomming is a firmware feature for sdio bus interface. For SDIO
device cores newer than revision 11, the default setting of
firmware should be used instead of disabling it from the host side.
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch fixes problem detected in linux-next build for powerpc
allyesconfig. The error message below is no longer observed:

  CC      drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.o
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c: In function 'brcmf_sdio_dump_console':
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3085: error: implicit declaration of function 'vzalloc'
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3085: warning: assignment makes pointer from integer without a cast
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3113: error: implicit declaration of function 'vfree'
make[2]: *** [drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.o] Error 1
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The checkdied functionality provides useful information for analyzing
firmware crashes. By exposing this information to a debugfs file users
can easily provide its content in bug reports. The functionality is
available only when CONFIG_BRCMDBG is selected.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NFranky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The structure brcmf_sdio contains a number of counters that are useful
for debugging. These were not available in user-space. This patch
exposes them in debugfs under the filename 'counters'.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NFranky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Adding casts of objects to the same type is unnecessary
and confusing for a human reader.

For example, this cast:

        int y;
        int *p = (int *)&y;

I used the coccinelle script below to find and remove these
unnecessary casts.  I manually removed the conversions this
script produces of casts with __force, __iomem and __user.

@@
type T;
T *p;
@@

-       (T *)p
+       p

Neatened the mwifiex_deauthenticate_infra function which
was doing odd things with array pointers and not using
is_zero_ether_addr.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The new interface brcmf_sdio_regr/w provides result of access
attempts. It is no longer necessary to use dedicated variable
and function to provide enquiry for failure.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The new brcmf_sdio_regrl/regwl interface has already performed
retries on failed attempts. It is no longer necessary to have the
retry mechanism in r_sdreg32/w_sdreg32.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the newly introduced brcmf_sdio_regwl to replace
brcmf_sdcard_reg_write as part of the SDIO WiFi dongle register
access interface clean up.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the newly introduced brcmf_sdio_regrl to replace
brcmf_sdcard_reg_read as part of the SDIO WiFi dongle register
access interface clean up.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the newly introduced brcmf_sdio_regwb to replace
brcmf_sdcard_cfg_write as part of the SDIO WiFi dongle register
access interface clean up.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use the newly introduced brcmf_sdio_regrb to replace
brcmf_sdcard_cfg_read as part of the SDIO WiFi dongle register
access interface clean up.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The size parameter for brcmf_sdcard_reg_write is always 4. Remove it
to make the code cleaner.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NFranky Lin <frankyl@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>