On 08/18/2011 07:55 AM, Oliver Hartkopp wrote: > On 16.08.2011 21:45, Willy Lambert wrote: > >> Hi all, >> >> I used sja1000 on a 32bits system and I am trying to switch to a 64b system. >> It not possible to select CONFIG_SJA1000_ISA when CONFIG_ISA is not set, >> which >> is not available when CONFIG_X86_64 is set. >> >> As in xenomai "socket" drivers I am able to use my board, I wonder why this >> is >> not possible under a vanilla linux. I access my HW by iomem (the equivalent >> xenomai driver is xeno_can_mem), is there an equivalent socket can driver ? > > > Hi Willy, > > i've looked into > > http://lxr.linux.no/#linux+v3.0.3/drivers/tty/serial/8250.c > > which should have a similar problem, as these old-style serial hardware is > also using the ISA bus. > > But the serial drivers are now depending on HAS_IOMEM > > http://lxr.linux.no/#linux+v3.0.3/drivers/tty/serial/Kconfig#L4 > > and they use platform calls > > http://lxr.linux.no/#linux+v3.0.3/drivers/tty/serial/8250.c#L3177 > > like platform_device_alloc(), platform_device_add(), > platform_driver_register() and friends ... > > http://lxr.linux.no/#linux+v3.0.3/drivers/tty/serial/8250.c#L3349 > > The sja1000_isa.c still uses the ISA pendants > > http://lxr.linux.no/#linux+v3.0.3/drivers/net/can/sja1000/sja1000_isa.c#L253 > > So IMO the sja1000_isa driver 'just' needs to be converted like they did with > the serial drivers. > > @Wolfgang/Marc: Or is it better to create some platform bindings for x86 and > use the 'sja1000_platform' driver??
A platform driver is of course sexier :) Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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