Hello folks,
while trying to make some more drivers compile-test'able, i've
discovered some arch specific calls in here, eg.:
In file included from
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci-spear.c:23:
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:
In function 'ehci_readl':
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:743:3:
error: implicit declaration of function 'readl_be'; did you mean
'readsb'? [-Werror=implicit-function-declaration]
743 | readl_be(regs) :
| ^~~~~~~~
| readsb
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:
In function 'ehci_writel':
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:767:3:
error: implicit declaration of function 'writel_be'; did you mean
'writesb'? [-Werror=implicit-function-declaration]
767 | writel_be(val, regs) :
| ^~~~~~~~~
| writesb
In file included from
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci-hcd.c:97:
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:
In function 'ehci_readl':
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:743:3:
error: implicit declaration of function 'readl_be'; did you mean
'readsb'? [-Werror=implicit-function-declaration]
743 | readl_be(regs) :
| ^~~~~~~~
| readsb
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:
In function 'ehci_writel':
/home/nekrad/src/apu2-dev/pkg/kernel.apu2.git/drivers/usb/host/ehci.h:767:3:
error: implicit declaration of function 'writel_be'; did you mean
'writesb'? [-Werror=implicit-function-declaration]
767 | writel_be(val, regs) :
| ^~~~~~~~~
| writesb
It seems that only few archs (microblaze, ppc, sparc) define them.
Also drivers/usb/host/ehci.h defines them, but only for one particular
arch/subarch.
IIRC, these funcs are for accessing hw registers that are in BEs, so
BE cpus can do direct access, while LE cpus need to do a conversion.
OTOH, we also have in_be32() / out_be32. They seem to do quite the same
thing, referenced much more often, but also just defined on a few archs.
I believe we should have generic functions, that all archs implement
(possibly doing automatic conversion, if necessary), which are used
by everybody else.
What's your oppionion on that ?
thanks,
--mtx
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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@xxxxxxxxx -- +49-151-27565287
