From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D5C7C43460 for ; Tue, 20 Apr 2021 09:28:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ED23661090 for ; Tue, 20 Apr 2021 09:28:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229761AbhDTJ3T (ORCPT ); Tue, 20 Apr 2021 05:29:19 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:16485 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229494AbhDTJ3S (ORCPT ); Tue, 20 Apr 2021 05:29:18 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FPdbj2CmDzrf4J; Tue, 20 Apr 2021 17:26:25 +0800 (CST) Received: from A2006125610.china.huawei.com (10.47.83.26) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.498.0; Tue, 20 Apr 2021 17:28:38 +0800 From: Shameer Kolothum To: , , CC: , , , , , , , , , Subject: [PATCH v3 06/10] =?UTF-8?q?iommu/arm-smmu-v3:=20Add=20bypass=20fl?= =?UTF-8?q?ag=20to=C2=A0arm=5Fsmmu=5Fwrite=5Fstrtab=5Fent()?= Date: Tue, 20 Apr 2021 10:27:47 +0200 Message-ID: <20210420082751.1829-7-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20210420082751.1829-1-shameerali.kolothum.thodi@huawei.com> References: <20210420082751.1829-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.47.83.26] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org By default, disable_bypass is set and any dev without an iommu domain installs STE with CFG_ABORT during arm_smmu_init_bypass_stes(). Introduce a "bypass" flag to arm_smmu_write_strtab_ent() so that we can force it to install CFG_BYPASS STE for specific SIDs. This will be useful for RMR related SIDs. Signed-off-by: Shameer Kolothum --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 29da3b681621..190285812182 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -1176,7 +1176,7 @@ static void arm_smmu_sync_ste_for_sid(struct arm_smmu_device *smmu, u32 sid) } static void arm_smmu_write_strtab_ent(struct arm_smmu_master *master, u32 sid, - __le64 *dst) + __le64 *dst, bool bypass) { /* * This is hideously complicated, but we only really care about @@ -1247,7 +1247,7 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_master *master, u32 sid, /* Bypass/fault */ if (!smmu_domain || !(s1_cfg || s2_cfg)) { - if (!smmu_domain && disable_bypass) + if (!smmu_domain && disable_bypass && !bypass) val |= FIELD_PREP(STRTAB_STE_0_CFG, STRTAB_STE_0_CFG_ABORT); else val |= FIELD_PREP(STRTAB_STE_0_CFG, STRTAB_STE_0_CFG_BYPASS); @@ -1322,7 +1322,7 @@ static void arm_smmu_init_bypass_stes(__le64 *strtab, unsigned int nent) unsigned int i; for (i = 0; i < nent; ++i) { - arm_smmu_write_strtab_ent(NULL, -1, strtab); + arm_smmu_write_strtab_ent(NULL, -1, strtab, false); strtab += STRTAB_STE_DWORDS; } } @@ -2076,7 +2076,7 @@ static void arm_smmu_install_ste_for_dev(struct arm_smmu_master *master) if (j < i) continue; - arm_smmu_write_strtab_ent(master, sid, step); + arm_smmu_write_strtab_ent(master, sid, step, false); } } -- 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6FC6C433B4 for ; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org QnkgZGVmYXVsdCzCoGRpc2FibGVfYnlwYXNzIGlzIHNldCBhbmQgYW55IGRldiB3aXRob3V0IGFu IGlvbW11IGRvbWFpbgppbnN0YWxscyBTVEUgd2l0aCBDRkdfQUJPUlQgZHVyaW5nwqBhcm1fc21t dV9pbml0X2J5cGFzc19zdGVzKCkuIEludHJvZHVjZQphICJieXBhc3MiIGZsYWcgdG/CoGFybV9z bW11X3dyaXRlX3N0cnRhYl9lbnQoKSBzbyB0aGF0IHdlIGNhbiBmb3JjZSBpdCB0bwppbnN0YWxs wqBDRkdfQllQQVNTIFNURSBmb3Igc3BlY2lmaWMgU0lEcy4gVGhpcyB3aWxsIGJlwqB1c2VmdWzC oGZvciBSTVIKcmVsYXRlZCBTSURzLgoKU2lnbmVkLW9mZi1ieTogU2hhbWVlciBLb2xvdGh1bSA8 c2hhbWVlcmFsaS5rb2xvdGh1bS50aG9kaUBodWF3ZWkuY29tPgotLS0KIGRyaXZlcnMvaW9tbXUv YXJtL2FybS1zbW11LXYzL2FybS1zbW11LXYzLmMgfCA4ICsrKystLS0tCiAxIGZpbGUgY2hhbmdl ZCwgNCBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMv aW9tbXUvYXJtL2FybS1zbW11LXYzL2FybS1zbW11LXYzLmMgYi9kcml2ZXJzL2lvbW11L2FybS9h cm0tc21tdS12My9hcm0tc21tdS12My5jCmluZGV4IDI5ZGEzYjY4MTYyMS4uMTkwMjg1ODEyMTgy IDEwMDY0NAotLS0gYS9kcml2ZXJzL2lvbW11L2FybS9hcm0tc21tdS12My9hcm0tc21tdS12My5j CisrKyBiL2RyaXZlcnMvaW9tbXUvYXJtL2FybS1zbW11LXYzL2FybS1zbW11LXYzLmMKQEAgLTEx NzYsNyArMTE3Niw3IEBAIHN0YXRpYyB2b2lkIGFybV9zbW11X3N5bmNfc3RlX2Zvcl9zaWQoc3Ry dWN0IGFybV9zbW11X2RldmljZSAqc21tdSwgdTMyIHNpZCkKIH0KIAogc3RhdGljIHZvaWQgYXJt X3NtbXVfd3JpdGVfc3RydGFiX2VudChzdHJ1Y3QgYXJtX3NtbXVfbWFzdGVyICptYXN0ZXIsIHUz MiBzaWQsCi0JCQkJICAgICAgX19sZTY0ICpkc3QpCisJCQkJICAgICAgX19sZTY0ICpkc3QsIGJv b2wgYnlwYXNzKQogewogCS8qCiAJICogVGhpcyBpcyBoaWRlb3VzbHkgY29tcGxpY2F0ZWQsIGJ1 dCB3ZSBvbmx5IHJlYWxseSBjYXJlIGFib3V0CkBAIC0xMjQ3LDcgKzEyNDcsNyBAQCBzdGF0aWMg dm9pZCBhcm1fc21tdV93cml0ZV9zdHJ0YWJfZW50KHN0cnVjdCBhcm1fc21tdV9tYXN0ZXIgKm1h c3RlciwgdTMyIHNpZCwKIAogCS8qIEJ5cGFzcy9mYXVsdCAqLwogCWlmICghc21tdV9kb21haW4g fHwgIShzMV9jZmcgfHwgczJfY2ZnKSkgewotCQlpZiAoIXNtbXVfZG9tYWluICYmIGRpc2FibGVf YnlwYXNzKQorCQlpZiAoIXNtbXVfZG9tYWluICYmIGRpc2FibGVfYnlwYXNzICYmICFieXBhc3Mp CiAJCQl2YWwgfD0gRklFTERfUFJFUChTVFJUQUJfU1RFXzBfQ0ZHLCBTVFJUQUJfU1RFXzBfQ0ZH X0FCT1JUKTsKIAkJZWxzZQogCQkJdmFsIHw9IEZJRUxEX1BSRVAoU1RSVEFCX1NURV8wX0NGRywg U1RSVEFCX1NURV8wX0NGR19CWVBBU1MpOwpAQCAtMTMyMiw3ICsxMzIyLDcgQEAgc3RhdGljIHZv aWQgYXJtX3NtbXVfaW5pdF9ieXBhc3Nfc3RlcyhfX2xlNjQgKnN0cnRhYiwgdW5zaWduZWQgaW50 IG5lbnQpCiAJdW5zaWduZWQgaW50IGk7CiAKIAlmb3IgKGkgPSAwOyBpIDwgbmVudDsgKytpKSB7 Ci0JCWFybV9zbW11X3dyaXRlX3N0cnRhYl9lbnQoTlVMTCwgLTEsIHN0cnRhYik7CisJCWFybV9z bW11X3dyaXRlX3N0cnRhYl9lbnQoTlVMTCwgLTEsIHN0cnRhYiwgZmFsc2UpOwogCQlzdHJ0YWIg Kz0gU1RSVEFCX1NURV9EV09SRFM7CiAJfQogfQpAQCAtMjA3Niw3ICsyMDc2LDcgQEAgc3RhdGlj IHZvaWQgYXJtX3NtbXVfaW5zdGFsbF9zdGVfZm9yX2RldihzdHJ1Y3QgYXJtX3NtbXVfbWFzdGVy ICptYXN0ZXIpCiAJCWlmIChqIDwgaSkKIAkJCWNvbnRpbnVlOwogCi0JCWFybV9zbW11X3dyaXRl X3N0cnRhYl9lbnQobWFzdGVyLCBzaWQsIHN0ZXApOworCQlhcm1fc21tdV93cml0ZV9zdHJ0YWJf ZW50KG1hc3Rlciwgc2lkLCBzdGVwLCBmYWxzZSk7CiAJfQogfQogCi0tIAoyLjE3LjEKCgpfX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2Vy bmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0 cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVs Cg==