Add new entry point to scan the device tree at boot in a guest, looking for CAPI devices.
Co-authored-by: Christophe Lombard <clomb...@linux.vnet.ibm.com> Signed-off-by: Frederic Barrat <fbar...@linux.vnet.ibm.com> Signed-off-by: Christophe Lombard <clomb...@linux.vnet.ibm.com> Acked-by: Ian Munsie <imun...@au1.ibm.com> --- drivers/misc/cxl/base.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c index 957f4dd..9b90ec6 100644 --- a/drivers/misc/cxl/base.c +++ b/drivers/misc/cxl/base.c @@ -11,6 +11,7 @@ #include <linux/rcupdate.h> #include <asm/errno.h> #include <misc/cxl-base.h> +#include <linux/of_platform.h> #include "cxl.h" /* protected by rcu */ @@ -91,3 +92,27 @@ int cxl_update_properties(struct device_node *dn, return of_update_property(dn, new_prop); } EXPORT_SYMBOL_GPL(cxl_update_properties); + +static int __init cxl_base_init(void) +{ + struct device_node *np = NULL; + struct platform_device *dev; + int count = 0; + + /* + * Scan for compatible devices in guest only + */ + if (cpu_has_feature(CPU_FTR_HVMODE)) + return 0; + + while ((np = of_find_compatible_node(np, NULL, + "ibm,coherent-platform-facility"))) { + dev = of_platform_device_create(np, NULL, NULL); + if (dev) + count++; + } + pr_devel("Found %d cxl device(s)\n", count); + return 0; +} + +module_init(cxl_base_init); -- 1.9.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev