From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 465B31A0B84 for ; Fri, 4 Mar 2016 22:27:07 +1100 (AEDT) Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 4 Mar 2016 11:27:05 -0000 Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id 9817D1B08061 for ; Fri, 4 Mar 2016 11:27:26 +0000 (GMT) Received: from d06av11.portsmouth.uk.ibm.com (d06av11.portsmouth.uk.ibm.com [9.149.37.252]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u24BR2aP59244782 for ; Fri, 4 Mar 2016 11:27:02 GMT Received: from d06av11.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av11.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u24BR2cW007585 for ; Fri, 4 Mar 2016 04:27:02 -0700 From: Frederic Barrat To: imunsie@au1.ibm.com, michael.neuling@au1.ibm.com, manoj@linux.vnet.ibm.com, mrochs@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v6 15/20] cxl: Parse device tree and create cxl device(s) at boot Date: Fri, 4 Mar 2016 12:26:39 +0100 Message-Id: <1457090804-9719-16-git-send-email-fbarrat@linux.vnet.ibm.com> In-Reply-To: <1457090804-9719-1-git-send-email-fbarrat@linux.vnet.ibm.com> References: <1457090804-9719-1-git-send-email-fbarrat@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Add new entry point to scan the device tree at boot in a guest, looking for cxl devices. Co-authored-by: Christophe Lombard Signed-off-by: Frederic Barrat Signed-off-by: Christophe Lombard Reviewed-by: Manoj Kumar Acked-by: Ian Munsie --- 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 #include #include +#include #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