[PATCH V7] bcma: add Broadcom specific AMBA bus driver
zajec5 at gmail.com
Tue May 17 13:48:18 EDT 2011
2011/5/17 Arend van Spriel <arend at broadcom.com>:
> On 05/09/2011 06:56 PM, Rafał Miłecki wrote:
>> Broadcom has released cards based on a new AMBA-based bus type. From a
>> programming point of view, this new bus type differs from AMBA and does
>> not use AMBA common registers. It also differs enough from SSB. We
>> decided that a new bus driver is needed to keep the code clean.
>> In its current form, the driver detects devices present on the bus and
>> registers them in the system. It allows registering BCMA drivers for
>> specified bus devices and provides them basic operations. The bus driver
>> itself includes two important bus managing drivers: ChipCommon core
>> driver and PCI(c) core driver. They are early used to allow correct
>> Currently code is limited to supporting buses on PCI(e) devices, however
>> the driver is designed to be used also on other hosts. The host
>> abstraction layer is implemented and already used for PCI(e).
>> Support for PCI(e) hosts is working and seems to be stable (access to
>> 80211 core was tested successfully on a few devices). We can still
>> optimize it by using some fixed windows, but this can be done later
>> without affecting any external code. Windows are just ranges in MMIO
>> used for accessing cores on the bus.
> Hi Rafał,
> Just some minor feedback on coding style. I wanted to make a change in
> host_pci.c to avoid changing the PCI BAR window and noticed following:
> 1. indentation is all spaces.
You can find spaces only for aligning text in newline after breaking
> 2. initial indent is 7 spaces, and subsequent indents are 8 spaces.
$ grep " " ./*c | wc -l
> 3. pointer assignment: ptr =&var;
$ grep "=&" ./*c | wc -l
> 4. output parameter: foo(bar,&yabar);
$ grep ",&" ./*c | wc -l
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