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spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=cclaudio@linux.ibm.com; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 45b7BJ3w6Sz9sLt; Sat, 29 Jun 2019 06:08:40 +1000 (AEST) Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5SK6pgc088817; Fri, 28 Jun 2019 16:08:38 -0400 Received: from ppma01wdc.us.ibm.com (fd.55.37a9.ip4.static.sl-reverse.com [169.55.85.253]) by mx0a-001b2d01.pphosted.com with ESMTP id 2tdqe84t8e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 Jun 2019 16:08:38 -0400 Received: from pps.filterd (ppma01wdc.us.ibm.com [127.0.0.1]) by ppma01wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x5SK6xqv014201; Fri, 28 Jun 2019 20:08:37 GMT Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by ppma01wdc.us.ibm.com with ESMTP id 2t9by7fpy9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 28 Jun 2019 20:08:37 +0000 Received: from b03ledav004.gho.boulder.ibm.com (b03ledav004.gho.boulder.ibm.com [9.17.130.235]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x5SK8Z1l46727510 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 28 Jun 2019 20:08:35 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AB4B37805C; Fri, 28 Jun 2019 20:08:35 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E6BBE78068; Fri, 28 Jun 2019 20:08:32 +0000 (GMT) Received: from rino.br.ibm.com (unknown [9.18.235.108]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 28 Jun 2019 20:08:32 +0000 (GMT) From: Claudio Carvalho To: linuxppc-dev@ozlabs.org Subject: [PATCH v4 2/8] powerpc: Introduce FW_FEATURE_ULTRAVISOR Date: Fri, 28 Jun 2019 17:08:19 -0300 Message-Id: <20190628200825.31049-3-cclaudio@linux.ibm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190628200825.31049-1-cclaudio@linux.ibm.com> References: <20190628200825.31049-1-cclaudio@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-28_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906280230 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Madhavan Srinivasan , Michael Anderson , Ram Pai , Claudio Carvalho , kvm-ppc@vger.kernel.org, Bharata B Rao , Ryan Grimm , Sukadev Bhattiprolu , Thiago Bauermann , Anshuman Khandual Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This feature tells if the ultravisor firmware is available to handle ucalls. Signed-off-by: Claudio Carvalho [ Device node name to "ibm,ultravisor" ] Signed-off-by: Michael Anderson --- arch/powerpc/include/asm/firmware.h | 5 +++-- arch/powerpc/include/asm/ultravisor.h | 15 +++++++++++++++ arch/powerpc/kernel/Makefile | 1 + arch/powerpc/kernel/prom.c | 4 ++++ arch/powerpc/kernel/ultravisor.c | 24 ++++++++++++++++++++++++ 5 files changed, 47 insertions(+), 2 deletions(-) create mode 100644 arch/powerpc/include/asm/ultravisor.h create mode 100644 arch/powerpc/kernel/ultravisor.c diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h index 00bc42d95679..43b48c4d3ca9 100644 --- a/arch/powerpc/include/asm/firmware.h +++ b/arch/powerpc/include/asm/firmware.h @@ -54,6 +54,7 @@ #define FW_FEATURE_DRC_INFO ASM_CONST(0x0000000800000000) #define FW_FEATURE_BLOCK_REMOVE ASM_CONST(0x0000001000000000) #define FW_FEATURE_PAPR_SCM ASM_CONST(0x0000002000000000) +#define FW_FEATURE_ULTRAVISOR ASM_CONST(0x0000004000000000) #ifndef __ASSEMBLY__ @@ -72,9 +73,9 @@ enum { FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN | FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 | FW_FEATURE_DRC_INFO | FW_FEATURE_BLOCK_REMOVE | - FW_FEATURE_PAPR_SCM, + FW_FEATURE_PAPR_SCM | FW_FEATURE_ULTRAVISOR, FW_FEATURE_PSERIES_ALWAYS = 0, - FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL, + FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_ULTRAVISOR, FW_FEATURE_POWERNV_ALWAYS = 0, FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1, FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1, diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h new file mode 100644 index 000000000000..e5009b0d84ea --- /dev/null +++ b/arch/powerpc/include/asm/ultravisor.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Ultravisor definitions + * + * Copyright 2019, IBM Corporation. + * + */ +#ifndef _ASM_POWERPC_ULTRAVISOR_H +#define _ASM_POWERPC_ULTRAVISOR_H + +/* Internal functions */ +extern int early_init_dt_scan_ultravisor(unsigned long node, const char *uname, + int depth, void *data); + +#endif /* _ASM_POWERPC_ULTRAVISOR_H */ diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 0ea6c4aa3a20..f0caa302c8c0 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -154,6 +154,7 @@ endif obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o +obj-$(CONFIG_PPC_POWERNV) += ultravisor.o # Disable GCOV, KCOV & sanitizers in odd or sensitive code GCOV_PROFILE_prom_init.o := n diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 4221527b082f..67a2c1b39252 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -59,6 +59,7 @@ #include #include #include +#include #include @@ -706,6 +707,9 @@ void __init early_init_devtree(void *params) #ifdef CONFIG_PPC_POWERNV /* Some machines might need OPAL info for debugging, grab it now. */ of_scan_flat_dt(early_init_dt_scan_opal, NULL); + + /* Scan tree for ultravisor feature */ + of_scan_flat_dt(early_init_dt_scan_ultravisor, NULL); #endif #ifdef CONFIG_FA_DUMP diff --git a/arch/powerpc/kernel/ultravisor.c b/arch/powerpc/kernel/ultravisor.c new file mode 100644 index 000000000000..dc6021f63c97 --- /dev/null +++ b/arch/powerpc/kernel/ultravisor.c @@ -0,0 +1,24 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Ultravisor high level interfaces + * + * Copyright 2019, IBM Corporation. + * + */ +#include +#include +#include + +#include +#include + +int __init early_init_dt_scan_ultravisor(unsigned long node, const char *uname, + int depth, void *data) +{ + if (depth != 1 || strcmp(uname, "ibm,ultravisor") != 0) + return 0; + + powerpc_firmware_features |= FW_FEATURE_ULTRAVISOR; + pr_debug("Ultravisor detected!\n"); + return 1; +} -- 2.20.1