On Fri, Aug 21, 2015 at 01:29:20PM -0400, sven falempin wrote: > Dear Readers, > > is 'bus_dma' > http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man9/bus_dma.9 > the <<equivalent>> of 'ioremap/ioread32' > http://www.makelinux.net/ldd3/chp-9-sect-4-- > ? > > trying to port a driver : watchdog/sp5100_tco.c, wondering the openbsd > equivalent of readl : > if (sp5100_tco_pci->revision >= 0x40) { > /* Read SBResource_MMIO from AcpiMmioEn(PM_Reg: 24h) */ > outb(SB800_PM_ACPI_MMIO_EN+3, SB800_IO_PM_INDEX_REG); > [..bus space map equivalent..] > } else { > [...] > /* Check MMIO address conflict */ > if (request_mem_region_exclusive(val, SP5100_WDT_MEM_MAP_SIZE, > dev_name)) { > [...] > tcobase = ioremap(val, SP5100_WDT_MEM_MAP_SIZE); > [...] > /* Check that the watchdog action is set to reset the system */ > [..ioread32 old school form..] > val = readl(SP5100_WDT_CONTROL(tcobase)); > > > Best regards, >
no context here, but you're probably looking for something like bus_space_read_4 -ml
