bus driver at detach, hence ehci_detach() does exactly this since r199718.
Submitted by: Luiz Otavio O Souza
MFC after: 7 days
Approved by: thompsa (mentor)
levels. TX would hang, RX wouldn't. A bit of digging showed the interface
send queue was full, but IFF_DRV_OACTIVE was clear and the hardware TX
queue was empty.
It turns out that there wasn't a check to drain the interface send
queue once hardware TX had completed, so if the interface send queue
had filled up in the meantime, subsequent packets would be dropped
by the higher layers and if_start (and thus arge_start()) would never
be called.
The fix is simple - call arge_start_locked() in the software interrupt
handler after the hardware TX queue has been handled or a TX underrun
occured. This way the interface send queue gets drained.
offset in the flash.
Some devices (eg the TPLink WR-1043ND) don't have a flash environment
partition which can be queried for the current board settings.
This particular workaround allows for image creators to use a hint
to set the base MAC address. For example:
hint.arge.0.eeprommac=0x1f01fc00
just for Redboot.
At some point we're going to need to build options for different
boot environments - for example, the UBoot setups I've seen simply
have the MAC address hard-coded at a fixed location in flash.
The OpenWRT support simply yanks the if_arge MAC directly from that
in code, rather than trying to find a uboot environment to pull it
from.
memory detected from Redboot, or overrides the "otherwise" case
if no Redboot information was found.
Some AR71XX platforms don't use Redboot (eg TP-LINK devices using
UBoot; some later Ubiquiti devices which apparently also use
UBoot) and at least one plain out lies - the Ubiquiti LS-SR71A
Redboot says there's 16mb of RAM when in fact there's 32mb.
A more "clean" solution will be needed at a later date.
The AR913x/AR724x USB lives at a different offset to the AR71xx
USB, so this needs to be either adjusted for in a subsequent
commit, or updated in hints for kernels compiled for those
platforms.
Submitted by: Luiz Otavio O Souzau <loos.br@gmail.com>
mipsel' or 'machine mips mipseb' into the config file (with a few 64's
tossed in for good measure). This will let us build the proper
kernels with different worlds as part of make universe.
This reflects actual type used to store and compare child device orders.
Change is mostly done via a Coccinelle (soon to be devel/coccinelle)
semantic patch.
Verified by LINT+modules kernel builds.
Followup to: r212213
MFC after: 10 days
* Add a function to write to the relevant PLL register
* Break out the PLL configuration for the AR71XX into the CPU ops,
lifted from if_arge.c.
* Add the AR91XX PLL configuration ops, using the AR91XX register
definitions.
This is untested but should at least allow an AR724X to boot.
The current code is lacking the detail needed to expose the PCIe bus.
It is also lacking any NIC, PLL or flush/WB code.
This works well enough to bring a system up to single-user mode
using an MDROOT.
Known Issues:
* The EHCI USB doesn't currently work and will panic the kernel during
attach.
* The onboard ethernet won't work until the PLL routines have been
fleshed out and shoe-horned into if_arge.
* The WMAC device glue (and quite likely the if_ath support)
hasn't yet been implemented.
* Implement a SoC probe function, from Linux, which determines the
SoC family, type and revision. This only probes the AR71xx series
SoC and (currently) panics on others.
* Migrate some of the AR71XX specific hardware init (USB device, determining
system frequencies) into using the cpuops introduced in an earlier commit.
Other SoC specific hardware stuff (per-device flush/WB, GPIO pin wiring,
Ethernet PLL setup, other things I've likely missed) will be introduced in
subsequent commits.
Reviewed by: imp@
Obtained from: (partially) Linux
Each of these SoCs have different devices, different hardware initialisation
methods and, quite likely, different quirks. These functions will abstract
out the SoC differences and keep these differences out of the drivers (eg
USB init, if_arge, etc.)
