From patchwork Tue Apr 15 06:14:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 3989231 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D5187BFF02 for ; Tue, 15 Apr 2014 06:18:11 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EDC812014A for ; Tue, 15 Apr 2014 06:18:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F0FAF2012D for ; Tue, 15 Apr 2014 06:18:09 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WZweR-0007SV-Fi; Tue, 15 Apr 2014 06:15:23 +0000 Received: from mail-pb0-f45.google.com ([209.85.160.45]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WZweI-0006B5-62 for linux-arm-kernel@lists.infradead.org; Tue, 15 Apr 2014 06:15:14 +0000 Received: by mail-pb0-f45.google.com with SMTP id uo5so9087381pbc.18 for ; Mon, 14 Apr 2014 23:14:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=EayGxtsCJzVZH7uOfqWS1QJZZ5OaCgosJMFjMhUWyN0=; b=TNiyCMIw67YUydL51yFJxVCwNqoQHTSgykpfQQR/0maw+WDk7jpyBIZbO25qQoROCd eeUxAmdqqxuXQ7kdR7VgwsoeIhuSRmD9R8qElM8wFR2yfg/3YDxvbhVdmt9jLB8sIoIR uFL7McaAS1KHQceeXfooXghUiKACs3P+8HpDoVgrJyMkLlR2bc1j9qUwKiw9VTC//gx8 dxJkZNka81gWUX1IsseZM6sK/NRHiRfC2wJN6ye0NJ/JoXr4CyvramzSVrDQBi1MzgFo Z7SzT8q09ltfXDX/SB89gNj4XCVPkALD7I+SNAwERygAtVx2c0iUQosmVujIh3Wo/3p5 wyIw== X-Gm-Message-State: ALoCoQlCo10eFMJk80i1a9uwf8eNgc3ZnKpCxfMTHLij3hCAV2vUjCJznw1i5u+2FhFpyKzVKKU2 X-Received: by 10.68.105.36 with SMTP id gj4mr48748892pbb.64.1397542492492; Mon, 14 Apr 2014 23:14:52 -0700 (PDT) Received: from pnqlab006.amcc.com ([182.73.239.130]) by mx.google.com with ESMTPSA id oz7sm37870688pbc.41.2014.04.14.23.14.47 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Apr 2014 23:14:51 -0700 (PDT) From: Anup Patel To: kvmarm@lists.cs.columbia.edu Subject: [PATCH v9 02/12] ARM/ARM64: KVM: Add common header for PSCI related defines Date: Tue, 15 Apr 2014 11:44:05 +0530 Message-Id: <1397542455-354-3-git-send-email-anup.patel@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1397542455-354-1-git-send-email-anup.patel@linaro.org> References: <1397542455-354-1-git-send-email-anup.patel@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140414_231514_254398_EED39341 X-CRM114-Status: GOOD ( 12.27 ) X-Spam-Score: -0.7 (/) Cc: Mark Rutland , Rob Herring , linaro-kernel@lists.linaro.org, Anup Patel , Marc Zyngier , patches@apm.com, Ashwin Chaugule , linux-arm-kernel@lists.infradead.org, Christoffer Dall , Pranavkumar Sawargaonkar X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We need a common place to share PSCI related defines among ARM kernel, ARM64 kernel, KVM ARM/ARM64 PSCI emulation, and user space. We introduce uapi/linux/psci.h for this purpose. This newly added header will be first used by KVM ARM/ARM64 in-kernel PSCI emulation and user space (i.e. QEMU or KVMTOOL). Signed-off-by: Anup Patel Signed-off-by: Pranavkumar Sawargaonkar Signed-off-by: Ashwin Chaugule --- include/uapi/linux/Kbuild | 1 + include/uapi/linux/psci.h | 78 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 79 insertions(+) create mode 100644 include/uapi/linux/psci.h diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index 6929571..24e9033 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -317,6 +317,7 @@ header-y += ppp-ioctl.h header-y += ppp_defs.h header-y += pps.h header-y += prctl.h +header-y += psci.h header-y += ptp_clock.h header-y += ptrace.h header-y += qnx4_fs.h diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h new file mode 100644 index 0000000..077b623 --- /dev/null +++ b/include/uapi/linux/psci.h @@ -0,0 +1,78 @@ +/* + * ARM Power State and Coordination Interface (PSCI) header + * + * This header holds common PSCI defines and macros shared + * by: ARM kernel, ARM64 kernel, KVM ARM/ARM64 and user space. + * + * Copyright (C) 2014 Linaro Ltd. + * Author: Anup Patel + */ + +#ifndef _UAPI_LINUX_PSCI_H +#define _UAPI_LINUX_PSCI_H + +/* PSCI v0.1 interface */ +#define PSCI_FN(base, n) ((base) + (n)) + +#define PSCI_FN_CPU_SUSPEND(base) PSCI_FN(base, 0) +#define PSCI_FN_CPU_OFF(base) PSCI_FN(base, 1) +#define PSCI_FN_CPU_ON(base) PSCI_FN(base, 2) +#define PSCI_FN_MIGRATE(base) PSCI_FN(base, 3) + +/* PSCI v0.2 interface */ +#define PSCI_0_2_FN_BASE 0x84000000 +#define PSCI_0_2_FN(n) (PSCI_0_2_FN_BASE + (n)) +#define PSCI_0_2_64BIT 0x40000000 +#define PSCI_0_2_FN64_BASE \ + (PSCI_0_2_FN_BASE + PSCI_0_2_64BIT) +#define PSCI_0_2_FN64(n) (PSCI_0_2_FN64_BASE + (n)) + +#define PSCI_0_2_FN_PSCI_VERSION PSCI_0_2_FN(0) +#define PSCI_0_2_FN_CPU_SUSPEND PSCI_0_2_FN(1) +#define PSCI_0_2_FN_CPU_OFF PSCI_0_2_FN(2) +#define PSCI_0_2_FN_CPU_ON PSCI_0_2_FN(3) +#define PSCI_0_2_FN_AFFINITY_INFO PSCI_0_2_FN(4) +#define PSCI_0_2_FN_MIGRATE PSCI_0_2_FN(5) +#define PSCI_0_2_FN_MIGRATE_INFO_TYPE PSCI_0_2_FN(6) +#define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) +#define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) +#define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) + +#define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) +#define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) +#define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) +#define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) +#define PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU PSCI_0_2_FN64(7) + +#define PSCI_0_2_POWER_STATE_ID_MASK 0xffff +#define PSCI_0_2_POWER_STATE_ID_SHIFT 0 +#define PSCI_0_2_POWER_STATE_TYPE_MASK 0x1 +#define PSCI_0_2_POWER_STATE_TYPE_SHIFT 16 +#define PSCI_0_2_POWER_STATE_AFFL_MASK 0x3 +#define PSCI_0_2_POWER_STATE_AFFL_SHIFT 24 + +#define PSCI_0_2_TOS_UP_MIGRATE 0 +#define PSCI_0_2_TOS_UP_NO_MIGRATE 1 +#define PSCI_0_2_TOS_MP 2 + +/* PSCI version decoding (independent of PSCI version) */ +#define PSCI_VERSION_MAJOR_MASK 0xffff0000 +#define PSCI_VERSION_MINOR_MASK 0x0000ffff +#define PSCI_VERSION_MAJOR_SHIFT 16 +#define PSCI_VERSION_MAJOR(ver) \ + (((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT) +#define PSCI_VERSION_MINOR(ver) \ + ((ver) & PSCI_VERSION_MINOR_MASK) + +/* PSCI return values (inclusive of all PSCI versions) */ +#define PSCI_RET_SUCCESS 0 +#define PSCI_RET_NOT_SUPPORTED -1 +#define PSCI_RET_INVALID_PARAMS -2 +#define PSCI_RET_DENIED -3 +#define PSCI_RET_ALREADY_ON -4 +#define PSCI_RET_ON_PENDING -5 +#define PSCI_RET_INTERNAL_FAILURE -6 +#define PSCI_RET_NOT_PRESENT -7 +#define PSCI_RET_DISABLED -8 + +#endif /* _UAPI_LINUX_PSCI_H */