Date: Tue, 15 Dec 2009 22:29:37 GMT From: Rafal Jaworowski <raj@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 171817 for review Message-ID: <200912152229.nBFMTbXl072428@repoman.freebsd.org>
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http://p4web.freebsd.org/chv.cgi?CH=171817 Change 171817 by raj@raj_fdt on 2009/12/15 22:29:35 Provide helper routine for checking node compatibility. It will be useful for FDT-enabled devices, when matching for 'compatible' property, as they can often have multi-string form e.g.: compatible = "fsl,mpc8572-elbc", "fsl,elbc", "simple-bus"; compatible = "fsl,mpc8572-dma", "fsl,eloplus-dma"; compatible = "fsl,mpc8572-msi", "fsl,mpic-msi"; Affected files ... .. //depot/projects/fdt/sys/dev/ofw/ofw_bus_subr.c#2 edit .. //depot/projects/fdt/sys/dev/ofw/ofw_bus_subr.h#2 edit Differences ... ==== //depot/projects/fdt/sys/dev/ofw/ofw_bus_subr.c#2 (text+ko) ==== @@ -146,6 +146,38 @@ return (obd->obd_type); } +int +ofw_bus_is_compatible(device_t dev, const char *onecompat) +{ + phandle_t node; + const char *compat; + int len, onelen, l; + + if ((compat = ofw_bus_get_compat(dev)) == NULL) + return (0); + + if ((node = ofw_bus_get_node(dev)) == 0) + return (0); + + /* Get total 'compatible' prop len */ + if ((len = OF_getproplen(node, "compatible")) <= 0) + return (0); + + onelen = strlen(onecompat); + + while (len > 0) { + if (strncasecmp(compat, onecompat, onelen) == 0) + /* Found it. */ + return (1); + + /* Slide to the next sub-string. */ + l = strlen(compat) + 1; + compat += l; + len -= l; + } + return (0); +} + void ofw_bus_setup_iinfo(phandle_t node, struct ofw_bus_iinfo *ii, int intrsz) { ==== //depot/projects/fdt/sys/dev/ofw/ofw_bus_subr.h#2 (text+ko) ==== @@ -67,4 +67,7 @@ int ofw_bus_search_intrmap(void *, int, void *, int, void *, int, void *, void *, void *, int); +/* Helper routine for checking compat prop */ +int ofw_bus_is_compatible(device_t, const char *); + #endif /* !_DEV_OFW_OFW_BUS_SUBR_H_ */
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