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android_kernel_motorola_sm6225/drivers/bcma
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Saul St. John ee91592711 bcma: don't leak memory for PCIE, MIPS, GBIT cores 
bcma_scan_bus allocates a bcma_core for each core found on the bus, but the
memory for cores handled by the bcma driver itself was not being freed when
the bus was unregistered. This patch adds special handling for the PCIE,
MIPS, and GBIT COMMON cores, to ensure that their memory allocation is
freed as well.

Note that this patch doesn't address the memory allocated for the CC core,
as that was corrected in my previous patch "bcma: register cc core driver,
device."

Cc: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Saul St. John <saul.stjohn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-07 15:03:35 -04:00
..
bcma_private.h bcma: detect and register NAND flash device 2012-08-21 16:05:53 -04:00
core.c bcma: use custom printing functions 2012-07-09 16:36:36 -04:00
driver_chipcommon.c bcma: fix CC driver compilation on MIPS 2012-07-11 15:40:21 -04:00
driver_chipcommon_nflash.c bcma: detect and register NAND flash device 2012-08-21 16:05:53 -04:00
driver_chipcommon_pmu.c bcma: make some functions static 2012-08-10 15:26:52 -04:00
driver_chipcommon_sflash.c bcma: detect and register serial flash device 2012-08-21 16:05:52 -04:00
driver_gmac_cmn.c bcma: add trivial GBIT MAC COMMON driver 2012-07-12 15:27:18 -04:00
driver_mips.c bcma: fix regression in interrupt assignment on mips 2012-07-26 15:37:57 -04:00
driver_pci.c bcma: fix null pointer in bcma_core_pci_irq_ctl 2012-06-08 13:47:07 -04:00
driver_pci_host.c bcma: use custom printing functions 2012-07-09 16:36:36 -04:00
host_pci.c bcma: make some functions static 2012-08-10 15:26:52 -04:00
host_soc.c bcma: make some functions static 2012-08-10 15:26:52 -04:00
Kconfig bcma: detect and register NAND flash device 2012-08-21 16:05:53 -04:00
main.c bcma: don't leak memory for PCIE, MIPS, GBIT cores 2012-09-07 15:03:35 -04:00
Makefile bcma: add place for flash memory support 2012-07-17 15:11:40 -04:00
README bcma: add Broadcom specific AMBA bus driver 2011-05-10 15:54:54 -04:00
scan.c bcma: add missing iounmap on error path 2012-07-26 15:37:57 -04:00
scan.h bcma: fix typo - reading number of slave wrappers 2012-07-12 15:27:17 -04:00
sprom.c bcma: use custom printing functions 2012-07-09 16:36:36 -04:00
TODO bcma: add Broadcom specific AMBA bus driver 2011-05-10 15:54:54 -04:00

README 

Broadcom introduced new bus as replacement for older SSB. It is based on AMBA,
however from programming point of view there is nothing AMBA specific we use.

Standard AMBA drivers are platform specific, have hardcoded addresses and use
AMBA standard fields like CID and PID.

In case of Broadcom's cards every device consists of:
1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated
   as standard AMBA device. Reading it's CID or PID can cause machine lockup.
2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID)
   and PIDs (0x103BB369), but we do not use that info for anything. One of that
   devices is used for managing Broadcom specific core.

Addresses of AMBA devices are not hardcoded in driver and have to be read from
EPROM.

In this situation we decided to introduce separated bus. It can contain up to
16 devices identified by Broadcom specific fields: manufacturer, id, revision
and class.