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=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 82A97C33C9E for ; Tue, 28 Jan 2020 10:36:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 41E1424686 for ; Tue, 28 Jan 2020 10:36:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="TZpmxGlt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726333AbgA1Kgf (ORCPT ); Tue, 28 Jan 2020 05:36:35 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:24747 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726072AbgA1Kgf (ORCPT ); Tue, 28 Jan 2020 05:36:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580207792; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AMnFoycaRqVR3q3J7wrgsZqqrGsLu5esjXYok9mZrus=; b=TZpmxGltZt4HxLtBuMjN5qrT3eOxMsIB56eLvj+xSJhe1Gkghays+uUFkC7I/7wjIeFCRu 3pF50oQXRzuWqdd8CW79lHwl2VU8Uao+/ucsGNKlbFhHHBIDLoE4kReOKNywhULp3fmsNo eaFhTQbgv8OMSso7QvpSTij76yBJI+8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-9-U2jGCtRmO8iAIYcIG8p_xg-1; Tue, 28 Jan 2020 05:36:30 -0500 X-MC-Unique: U2jGCtRmO8iAIYcIG8p_xg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A0EED107ACC5; Tue, 28 Jan 2020 10:36:28 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-37.ams2.redhat.com [10.36.116.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD7B01001B30; Tue, 28 Jan 2020 10:36:22 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: drjones@redhat.com, andre.przywara@arm.com, peter.maydell@linaro.org, yuzenghui@huawei.com, alexandru.elisei@arm.com, thuth@redhat.com Subject: [kvm-unit-tests PATCH v3 10/14] arm/arm64: ITS: commands Date: Tue, 28 Jan 2020 11:34:55 +0100 Message-Id: <20200128103459.19413-11-eric.auger@redhat.com> In-Reply-To: <20200128103459.19413-1-eric.auger@redhat.com> References: <20200128103459.19413-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Content-Transfer-Encoding: quoted-printable Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Implement main ITS commands. The code is largely inherited from the ITS driver. Signed-off-by: Eric Auger --- v2 -> v3: - do not use report() anymore - assert if cmd_write exceeds the queue capacity v1 -> v2: - removed its_print_cmd_state --- arm/Makefile.arm64 | 2 +- lib/arm/asm/gic-v3-its.h | 38 +++- lib/arm/gic-v3-its-cmd.c | 454 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 492 insertions(+), 2 deletions(-) create mode 100644 lib/arm/gic-v3-its-cmd.c diff --git a/arm/Makefile.arm64 b/arm/Makefile.arm64 index 2571ffb..d12aea5 100644 --- a/arm/Makefile.arm64 +++ b/arm/Makefile.arm64 @@ -19,7 +19,7 @@ endef cstart.o =3D $(TEST_DIR)/cstart64.o cflatobjs +=3D lib/arm64/processor.o cflatobjs +=3D lib/arm64/spinlock.o -cflatobjs +=3D lib/arm/gic-v3-its.o +cflatobjs +=3D lib/arm/gic-v3-its.o lib/arm/gic-v3-its-cmd.o =20 OBJDIRS +=3D lib/arm64 =20 diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h index acd97a9..0e5c5b6 100644 --- a/lib/arm/asm/gic-v3-its.h +++ b/lib/arm/asm/gic-v3-its.h @@ -45,6 +45,8 @@ struct its_collection { u16 col_id; }; =20 +struct its_cmd_block; + struct its_data { void *base; struct its_typer typer; @@ -107,6 +109,24 @@ extern struct its_data its_data; #define GITS_BASER_TYPE_DEVICE 1 #define GITS_BASER_TYPE_COLLECTION 4 =20 +/* + * ITS commands + */ +#define GITS_CMD_MAPD 0x08 +#define GITS_CMD_MAPC 0x09 +#define GITS_CMD_MAPTI 0x0a +/* older GIC documentation used MAPVI for this command */ +#define GITS_CMD_MAPVI GITS_CMD_MAPTI +#define GITS_CMD_MAPI 0x0b +#define GITS_CMD_MOVI 0x01 +#define GITS_CMD_DISCARD 0x0f +#define GITS_CMD_INV 0x0c +#define GITS_CMD_MOVALL 0x0e +#define GITS_CMD_INVALL 0x0d +#define GITS_CMD_INT 0x03 +#define GITS_CMD_CLEAR 0x04 +#define GITS_CMD_SYNC 0x05 + struct its_cmd_block { u64 raw_cmd[4]; }; @@ -119,11 +139,27 @@ extern void its_enable_defaults(void); extern struct its_device *its_create_device(u32 dev_id, int nr_ites); extern struct its_collection *its_create_collection(u32 col_id, u32 targ= et_pe); =20 +extern void its_send_mapd(struct its_device *dev, int valid); +extern void its_send_mapc(struct its_collection *col, int valid); +extern void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col); +extern void its_send_int(struct its_device *dev, u32 event_id); +extern void its_send_inv(struct its_device *dev, u32 event_id); +extern void its_send_discard(struct its_device *dev, u32 event_id); +extern void its_send_clear(struct its_device *dev, u32 event_id); +extern void its_send_invall(struct its_collection *col); +extern void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id); +extern void its_send_sync(struct its_collection *col); + +#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0) +#define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1) +#define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2) + #else /* __arm__ */ =20 static inline void its_init(void) {} =20 #endif - #endif /* !__ASSEMBLY__ */ #endif /* _ASMARM_GIC_V3_ITS_H_ */ diff --git a/lib/arm/gic-v3-its-cmd.c b/lib/arm/gic-v3-its-cmd.c new file mode 100644 index 0000000..fb4364c --- /dev/null +++ b/lib/arm/gic-v3-its-cmd.c @@ -0,0 +1,454 @@ +/* + * Copyright (C) 2020, Red Hat Inc, Eric Auger + * + * Most of the code is copy-pasted from: + * drivers/irqchip/irq-gic-v3-its.c + * This work is licensed under the terms of the GNU LGPL, version 2. + */ +#include +#include +#include + +#define ITS_ITT_ALIGN SZ_256 + +static const char * const its_cmd_string[] =3D { + [GITS_CMD_MAPD] =3D "MAPD", + [GITS_CMD_MAPC] =3D "MAPC", + [GITS_CMD_MAPTI] =3D "MAPTI", + [GITS_CMD_MAPI] =3D "MAPI", + [GITS_CMD_MOVI] =3D "MOVI", + [GITS_CMD_DISCARD] =3D "DISCARD", + [GITS_CMD_INV] =3D "INV", + [GITS_CMD_MOVALL] =3D "MOVALL", + [GITS_CMD_INVALL] =3D "INVALL", + [GITS_CMD_INT] =3D "INT", + [GITS_CMD_CLEAR] =3D "CLEAR", + [GITS_CMD_SYNC] =3D "SYNC", +}; + +struct its_cmd_desc { + union { + struct { + struct its_device *dev; + u32 event_id; + } its_inv_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_int_cmd; + + struct { + struct its_device *dev; + bool valid; + } its_mapd_cmd; + + struct { + struct its_collection *col; + bool valid; + } its_mapc_cmd; + + struct { + struct its_device *dev; + u32 phys_id; + u32 event_id; + u32 col_id; + } its_mapti_cmd; + + struct { + struct its_device *dev; + struct its_collection *col; + u32 event_id; + } its_movi_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_discard_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_clear_cmd; + + struct { + struct its_collection *col; + } its_invall_cmd; + + struct { + struct its_collection *col; + } its_sync_cmd; + }; +}; + +typedef void (*its_cmd_builder_t)(struct its_cmd_block *, + struct its_cmd_desc *); + +/* ITS COMMANDS */ + +static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr) +{ + cmd->raw_cmd[0] &=3D ~0xffUL; + cmd->raw_cmd[0] |=3D cmd_nr; +} + +static void its_encode_devid(struct its_cmd_block *cmd, u32 devid) +{ + cmd->raw_cmd[0] &=3D BIT_ULL(32) - 1; + cmd->raw_cmd[0] |=3D ((u64)devid) << 32; +} + +static void its_encode_event_id(struct its_cmd_block *cmd, u32 id) +{ + cmd->raw_cmd[1] &=3D ~0xffffffffUL; + cmd->raw_cmd[1] |=3D id; +} + +static void its_encode_phys_id(struct its_cmd_block *cmd, u32 phys_id) +{ + cmd->raw_cmd[1] &=3D 0xffffffffUL; + cmd->raw_cmd[1] |=3D ((u64)phys_id) << 32; +} + +static void its_encode_size(struct its_cmd_block *cmd, u8 size) +{ + cmd->raw_cmd[1] &=3D ~0x1fUL; + cmd->raw_cmd[1] |=3D size & 0x1f; +} + +static void its_encode_itt(struct its_cmd_block *cmd, u64 itt_addr) +{ + cmd->raw_cmd[2] &=3D ~0xffffffffffffUL; + cmd->raw_cmd[2] |=3D itt_addr & 0xffffffffff00UL; +} + +static void its_encode_valid(struct its_cmd_block *cmd, int valid) +{ + cmd->raw_cmd[2] &=3D ~(1UL << 63); + cmd->raw_cmd[2] |=3D ((u64)!!valid) << 63; +} + +static void its_encode_target(struct its_cmd_block *cmd, u64 target_addr= ) +{ + cmd->raw_cmd[2] &=3D ~(0xfffffffffUL << 16); + cmd->raw_cmd[2] |=3D (target_addr & (0xffffffffUL << 16)); +} + +static void its_encode_collection(struct its_cmd_block *cmd, u16 col) +{ + cmd->raw_cmd[2] &=3D ~0xffffUL; + cmd->raw_cmd[2] |=3D col; +} + +static inline void its_fixup_cmd(struct its_cmd_block *cmd) +{ + /* Let's fixup BE commands */ + cmd->raw_cmd[0] =3D cpu_to_le64(cmd->raw_cmd[0]); + cmd->raw_cmd[1] =3D cpu_to_le64(cmd->raw_cmd[1]); + cmd->raw_cmd[2] =3D cpu_to_le64(cmd->raw_cmd[2]); + cmd->raw_cmd[3] =3D cpu_to_le64(cmd->raw_cmd[3]); +} + +static u64 its_cmd_ptr_to_offset(struct its_cmd_block *ptr) +{ + return (ptr - its_data.cmd_base) * sizeof(*ptr); +} + +static struct its_cmd_block *its_post_commands(void) +{ + u64 wr =3D its_cmd_ptr_to_offset(its_data.cmd_write); + + writeq(wr, its_data.base + GITS_CWRITER); + return its_data.cmd_write; +} + + +static struct its_cmd_block *its_allocate_entry(void) +{ + struct its_cmd_block *cmd; + + assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K); + cmd =3D its_data.cmd_write++; + return cmd; +} + +static void its_wait_for_range_completion(struct its_cmd_block *from, + struct its_cmd_block *to) +{ + u64 rd_idx, from_idx, to_idx; + u32 count =3D 1000000; /* 1s! */ + + from_idx =3D its_cmd_ptr_to_offset(from); + to_idx =3D its_cmd_ptr_to_offset(to); + while (1) { + rd_idx =3D readq(its_data.base + GITS_CREADR); + if (rd_idx >=3D to_idx || rd_idx < from_idx) + break; + + count--; + if (!count) { + unsigned int cmd_id =3D from->raw_cmd[0] & 0xFF; + + assert_msg(false, "%s timeout!", + cmd_id <=3D 0xF ? its_cmd_string[cmd_id] : + "Unexpected"); + return; + } + cpu_relax(); + udelay(1); + } +} + +static void its_send_single_command(its_cmd_builder_t builder, + struct its_cmd_desc *desc) +{ + struct its_cmd_block *cmd, *next_cmd; + + cmd =3D its_allocate_entry(); + builder(cmd, desc); + next_cmd =3D its_post_commands(); + + its_wait_for_range_completion(cmd, next_cmd); +} + + +static void its_build_mapd_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + unsigned long itt_addr; + u8 size =3D 12; /* 4096 eventids */ + + itt_addr =3D (unsigned long)desc->its_mapd_cmd.dev->itt; + itt_addr =3D ALIGN(itt_addr, ITS_ITT_ALIGN); + + its_encode_cmd(cmd, GITS_CMD_MAPD); + its_encode_devid(cmd, desc->its_mapd_cmd.dev->device_id); + its_encode_size(cmd, size - 1); + its_encode_itt(cmd, itt_addr); + its_encode_valid(cmd, desc->its_mapd_cmd.valid); + + its_fixup_cmd(cmd); + printf("ITS: MAPD devid=3D%d size =3D 0x%x itt=3D0x%lx valid=3D%d\n", + desc->its_mapd_cmd.dev->device_id, + size, itt_addr, desc->its_mapd_cmd.valid); + +} + +static void its_build_mapc_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPC); + its_encode_collection(cmd, desc->its_mapc_cmd.col->col_id); + its_encode_target(cmd, desc->its_mapc_cmd.col->target_address); + its_encode_valid(cmd, desc->its_mapc_cmd.valid); + + its_fixup_cmd(cmd); + report_info("MAPC col_id=3D%d target_addr =3D 0x%lx valid=3D%d", + desc->its_mapc_cmd.col->col_id, + desc->its_mapc_cmd.col->target_address, + desc->its_mapc_cmd.valid); +} + +static void its_build_mapti_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPTI); + its_encode_devid(cmd, desc->its_mapti_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_mapti_cmd.event_id); + its_encode_phys_id(cmd, desc->its_mapti_cmd.phys_id); + its_encode_collection(cmd, desc->its_mapti_cmd.col_id); + + its_fixup_cmd(cmd); + report_info("MAPTI dev_id=3D%d event_id=3D%d -> phys_id=3D%d, col_id=3D= %d", + desc->its_mapti_cmd.dev->device_id, + desc->its_mapti_cmd.event_id, + desc->its_mapti_cmd.phys_id, + desc->its_mapti_cmd.col_id); +} + +static void its_build_invall_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INVALL); + its_encode_collection(cmd, desc->its_invall_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("INVALL col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_clear_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_CLEAR); + its_encode_devid(cmd, desc->its_clear_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_clear_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("CLEAR col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_discard_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_DISCARD); + its_encode_devid(cmd, desc->its_discard_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_discard_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("DISCARD col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_inv_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INV); + its_encode_devid(cmd, desc->its_inv_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_inv_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INV dev_id=3D%d event_id=3D%d", + desc->its_inv_cmd.dev->device_id, + desc->its_inv_cmd.event_id); +} + +static void its_build_int_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INT); + its_encode_devid(cmd, desc->its_int_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_int_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INT dev_id=3D%d event_id=3D%d", + desc->its_int_cmd.dev->device_id, + desc->its_int_cmd.event_id); +} + +static void its_build_sync_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_SYNC); + its_encode_target(cmd, desc->its_sync_cmd.col->target_address); + its_fixup_cmd(cmd); + report_info("SYNC target_addr =3D 0x%lx", + desc->its_sync_cmd.col->target_address); +} + +static void its_build_movi_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MOVI); + its_encode_devid(cmd, desc->its_movi_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_movi_cmd.event_id); + its_encode_collection(cmd, desc->its_movi_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("MOVI dev_id=3D%d event_id =3D %d col_id=3D%d", + desc->its_movi_cmd.dev->device_id, + desc->its_movi_cmd.event_id, + desc->its_movi_cmd.col->col_id); +} + +void its_send_mapd(struct its_device *dev, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapd_cmd.dev =3D dev; + desc.its_mapd_cmd.valid =3D !!valid; + + its_send_single_command(its_build_mapd_cmd, &desc); +} + +void its_send_mapc(struct its_collection *col, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapc_cmd.col =3D col; + desc.its_mapc_cmd.valid =3D !!valid; + + its_send_single_command(its_build_mapc_cmd, &desc); +} + +void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_mapti_cmd.dev =3D dev; + desc.its_mapti_cmd.phys_id =3D irq_id; + desc.its_mapti_cmd.event_id =3D event_id; + desc.its_mapti_cmd.col_id =3D col->col_id; + + its_send_single_command(its_build_mapti_cmd, &desc); +} + +void its_send_int(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_int_cmd.dev =3D dev; + desc.its_int_cmd.event_id =3D event_id; + + its_send_single_command(its_build_int_cmd, &desc); +} + +void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id) +{ + struct its_cmd_desc desc; + + desc.its_movi_cmd.dev =3D dev; + desc.its_movi_cmd.col =3D col; + desc.its_movi_cmd.event_id =3D id; + + its_send_single_command(its_build_movi_cmd, &desc); +} + +void its_send_invall(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_invall_cmd.col =3D col; + + its_send_single_command(its_build_invall_cmd, &desc); +} + +void its_send_inv(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_inv_cmd.dev =3D dev; + desc.its_inv_cmd.event_id =3D event_id; + + its_send_single_command(its_build_inv_cmd, &desc); +} + +void its_send_discard(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_discard_cmd.dev =3D dev; + desc.its_discard_cmd.event_id =3D event_id; + + its_send_single_command(its_build_discard_cmd, &desc); +} + +void its_send_clear(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_clear_cmd.dev =3D dev; + desc.its_clear_cmd.event_id =3D event_id; + + its_send_single_command(its_build_clear_cmd, &desc); +} + +void its_send_sync(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_sync_cmd.col =3D col; + + its_send_single_command(its_build_sync_cmd, &desc); +} + --=20 2.20.1 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 41D51C33C9E for ; Tue, 28 Jan 2020 10:42:29 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F29062467E for ; 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Tue, 28 Jan 2020 10:36:28 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-37.ams2.redhat.com [10.36.116.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD7B01001B30; Tue, 28 Jan 2020 10:36:22 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Subject: [kvm-unit-tests PATCH v3 10/14] arm/arm64: ITS: commands Date: Tue, 28 Jan 2020 11:34:55 +0100 Message-Id: <20200128103459.19413-11-eric.auger@redhat.com> In-Reply-To: <20200128103459.19413-1-eric.auger@redhat.com> References: <20200128103459.19413-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, drjones@redhat.com, andre.przywara@arm.com, thuth@redhat.com, yuzenghui@huawei.com, alexandru.elisei@arm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Implement main ITS commands. The code is largely inherited from the ITS driver. Signed-off-by: Eric Auger --- v2 -> v3: - do not use report() anymore - assert if cmd_write exceeds the queue capacity v1 -> v2: - removed its_print_cmd_state --- arm/Makefile.arm64 | 2 +- lib/arm/asm/gic-v3-its.h | 38 +++- lib/arm/gic-v3-its-cmd.c | 454 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 492 insertions(+), 2 deletions(-) create mode 100644 lib/arm/gic-v3-its-cmd.c diff --git a/arm/Makefile.arm64 b/arm/Makefile.arm64 index 2571ffb..d12aea5 100644 --- a/arm/Makefile.arm64 +++ b/arm/Makefile.arm64 @@ -19,7 +19,7 @@ endef cstart.o =3D $(TEST_DIR)/cstart64.o cflatobjs +=3D lib/arm64/processor.o cflatobjs +=3D lib/arm64/spinlock.o -cflatobjs +=3D lib/arm/gic-v3-its.o +cflatobjs +=3D lib/arm/gic-v3-its.o lib/arm/gic-v3-its-cmd.o =20 OBJDIRS +=3D lib/arm64 =20 diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h index acd97a9..0e5c5b6 100644 --- a/lib/arm/asm/gic-v3-its.h +++ b/lib/arm/asm/gic-v3-its.h @@ -45,6 +45,8 @@ struct its_collection { u16 col_id; }; =20 +struct its_cmd_block; + struct its_data { void *base; struct its_typer typer; @@ -107,6 +109,24 @@ extern struct its_data its_data; #define GITS_BASER_TYPE_DEVICE 1 #define GITS_BASER_TYPE_COLLECTION 4 =20 +/* + * ITS commands + */ +#define GITS_CMD_MAPD 0x08 +#define GITS_CMD_MAPC 0x09 +#define GITS_CMD_MAPTI 0x0a +/* older GIC documentation used MAPVI for this command */ +#define GITS_CMD_MAPVI GITS_CMD_MAPTI +#define GITS_CMD_MAPI 0x0b +#define GITS_CMD_MOVI 0x01 +#define GITS_CMD_DISCARD 0x0f +#define GITS_CMD_INV 0x0c +#define GITS_CMD_MOVALL 0x0e +#define GITS_CMD_INVALL 0x0d +#define GITS_CMD_INT 0x03 +#define GITS_CMD_CLEAR 0x04 +#define GITS_CMD_SYNC 0x05 + struct its_cmd_block { u64 raw_cmd[4]; }; @@ -119,11 +139,27 @@ extern void its_enable_defaults(void); extern struct its_device *its_create_device(u32 dev_id, int nr_ites); extern struct its_collection *its_create_collection(u32 col_id, u32 targ= et_pe); =20 +extern void its_send_mapd(struct its_device *dev, int valid); +extern void its_send_mapc(struct its_collection *col, int valid); +extern void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col); +extern void its_send_int(struct its_device *dev, u32 event_id); +extern void its_send_inv(struct its_device *dev, u32 event_id); +extern void its_send_discard(struct its_device *dev, u32 event_id); +extern void its_send_clear(struct its_device *dev, u32 event_id); +extern void its_send_invall(struct its_collection *col); +extern void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id); +extern void its_send_sync(struct its_collection *col); + +#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0) +#define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1) +#define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2) + #else /* __arm__ */ =20 static inline void its_init(void) {} =20 #endif - #endif /* !__ASSEMBLY__ */ #endif /* _ASMARM_GIC_V3_ITS_H_ */ diff --git a/lib/arm/gic-v3-its-cmd.c b/lib/arm/gic-v3-its-cmd.c new file mode 100644 index 0000000..fb4364c --- /dev/null +++ b/lib/arm/gic-v3-its-cmd.c @@ -0,0 +1,454 @@ +/* + * Copyright (C) 2020, Red Hat Inc, Eric Auger + * + * Most of the code is copy-pasted from: + * drivers/irqchip/irq-gic-v3-its.c + * This work is licensed under the terms of the GNU LGPL, version 2. + */ +#include +#include +#include + +#define ITS_ITT_ALIGN SZ_256 + +static const char * const its_cmd_string[] =3D { + [GITS_CMD_MAPD] =3D "MAPD", + [GITS_CMD_MAPC] =3D "MAPC", + [GITS_CMD_MAPTI] =3D "MAPTI", + [GITS_CMD_MAPI] =3D "MAPI", + [GITS_CMD_MOVI] =3D "MOVI", + [GITS_CMD_DISCARD] =3D "DISCARD", + [GITS_CMD_INV] =3D "INV", + [GITS_CMD_MOVALL] =3D "MOVALL", + [GITS_CMD_INVALL] =3D "INVALL", + [GITS_CMD_INT] =3D "INT", + [GITS_CMD_CLEAR] =3D "CLEAR", + [GITS_CMD_SYNC] =3D "SYNC", +}; + +struct its_cmd_desc { + union { + struct { + struct its_device *dev; + u32 event_id; + } its_inv_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_int_cmd; + + struct { + struct its_device *dev; + bool valid; + } its_mapd_cmd; + + struct { + struct its_collection *col; + bool valid; + } its_mapc_cmd; + + struct { + struct its_device *dev; + u32 phys_id; + u32 event_id; + u32 col_id; + } its_mapti_cmd; + + struct { + struct its_device *dev; + struct its_collection *col; + u32 event_id; + } its_movi_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_discard_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_clear_cmd; + + struct { + struct its_collection *col; + } its_invall_cmd; + + struct { + struct its_collection *col; + } its_sync_cmd; + }; +}; + +typedef void (*its_cmd_builder_t)(struct its_cmd_block *, + struct its_cmd_desc *); + +/* ITS COMMANDS */ + +static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr) +{ + cmd->raw_cmd[0] &=3D ~0xffUL; + cmd->raw_cmd[0] |=3D cmd_nr; +} + +static void its_encode_devid(struct its_cmd_block *cmd, u32 devid) +{ + cmd->raw_cmd[0] &=3D BIT_ULL(32) - 1; + cmd->raw_cmd[0] |=3D ((u64)devid) << 32; +} + +static void its_encode_event_id(struct its_cmd_block *cmd, u32 id) +{ + cmd->raw_cmd[1] &=3D ~0xffffffffUL; + cmd->raw_cmd[1] |=3D id; +} + +static void its_encode_phys_id(struct its_cmd_block *cmd, u32 phys_id) +{ + cmd->raw_cmd[1] &=3D 0xffffffffUL; + cmd->raw_cmd[1] |=3D ((u64)phys_id) << 32; +} + +static void its_encode_size(struct its_cmd_block *cmd, u8 size) +{ + cmd->raw_cmd[1] &=3D ~0x1fUL; + cmd->raw_cmd[1] |=3D size & 0x1f; +} + +static void its_encode_itt(struct its_cmd_block *cmd, u64 itt_addr) +{ + cmd->raw_cmd[2] &=3D ~0xffffffffffffUL; + cmd->raw_cmd[2] |=3D itt_addr & 0xffffffffff00UL; +} + +static void its_encode_valid(struct its_cmd_block *cmd, int valid) +{ + cmd->raw_cmd[2] &=3D ~(1UL << 63); + cmd->raw_cmd[2] |=3D ((u64)!!valid) << 63; +} + +static void its_encode_target(struct its_cmd_block *cmd, u64 target_addr= ) +{ + cmd->raw_cmd[2] &=3D ~(0xfffffffffUL << 16); + cmd->raw_cmd[2] |=3D (target_addr & (0xffffffffUL << 16)); +} + +static void its_encode_collection(struct its_cmd_block *cmd, u16 col) +{ + cmd->raw_cmd[2] &=3D ~0xffffUL; + cmd->raw_cmd[2] |=3D col; +} + +static inline void its_fixup_cmd(struct its_cmd_block *cmd) +{ + /* Let's fixup BE commands */ + cmd->raw_cmd[0] =3D cpu_to_le64(cmd->raw_cmd[0]); + cmd->raw_cmd[1] =3D cpu_to_le64(cmd->raw_cmd[1]); + cmd->raw_cmd[2] =3D cpu_to_le64(cmd->raw_cmd[2]); + cmd->raw_cmd[3] =3D cpu_to_le64(cmd->raw_cmd[3]); +} + +static u64 its_cmd_ptr_to_offset(struct its_cmd_block *ptr) +{ + return (ptr - its_data.cmd_base) * sizeof(*ptr); +} + +static struct its_cmd_block *its_post_commands(void) +{ + u64 wr =3D its_cmd_ptr_to_offset(its_data.cmd_write); + + writeq(wr, its_data.base + GITS_CWRITER); + return its_data.cmd_write; +} + + +static struct its_cmd_block *its_allocate_entry(void) +{ + struct its_cmd_block *cmd; + + assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K); + cmd =3D its_data.cmd_write++; + return cmd; +} + +static void its_wait_for_range_completion(struct its_cmd_block *from, + struct its_cmd_block *to) +{ + u64 rd_idx, from_idx, to_idx; + u32 count =3D 1000000; /* 1s! */ + + from_idx =3D its_cmd_ptr_to_offset(from); + to_idx =3D its_cmd_ptr_to_offset(to); + while (1) { + rd_idx =3D readq(its_data.base + GITS_CREADR); + if (rd_idx >=3D to_idx || rd_idx < from_idx) + break; + + count--; + if (!count) { + unsigned int cmd_id =3D from->raw_cmd[0] & 0xFF; + + assert_msg(false, "%s timeout!", + cmd_id <=3D 0xF ? its_cmd_string[cmd_id] : + "Unexpected"); + return; + } + cpu_relax(); + udelay(1); + } +} + +static void its_send_single_command(its_cmd_builder_t builder, + struct its_cmd_desc *desc) +{ + struct its_cmd_block *cmd, *next_cmd; + + cmd =3D its_allocate_entry(); + builder(cmd, desc); + next_cmd =3D its_post_commands(); + + its_wait_for_range_completion(cmd, next_cmd); +} + + +static void its_build_mapd_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + unsigned long itt_addr; + u8 size =3D 12; /* 4096 eventids */ + + itt_addr =3D (unsigned long)desc->its_mapd_cmd.dev->itt; + itt_addr =3D ALIGN(itt_addr, ITS_ITT_ALIGN); + + its_encode_cmd(cmd, GITS_CMD_MAPD); + its_encode_devid(cmd, desc->its_mapd_cmd.dev->device_id); + its_encode_size(cmd, size - 1); + its_encode_itt(cmd, itt_addr); + its_encode_valid(cmd, desc->its_mapd_cmd.valid); + + its_fixup_cmd(cmd); + printf("ITS: MAPD devid=3D%d size =3D 0x%x itt=3D0x%lx valid=3D%d\n", + desc->its_mapd_cmd.dev->device_id, + size, itt_addr, desc->its_mapd_cmd.valid); + +} + +static void its_build_mapc_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPC); + its_encode_collection(cmd, desc->its_mapc_cmd.col->col_id); + its_encode_target(cmd, desc->its_mapc_cmd.col->target_address); + its_encode_valid(cmd, desc->its_mapc_cmd.valid); + + its_fixup_cmd(cmd); + report_info("MAPC col_id=3D%d target_addr =3D 0x%lx valid=3D%d", + desc->its_mapc_cmd.col->col_id, + desc->its_mapc_cmd.col->target_address, + desc->its_mapc_cmd.valid); +} + +static void its_build_mapti_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPTI); + its_encode_devid(cmd, desc->its_mapti_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_mapti_cmd.event_id); + its_encode_phys_id(cmd, desc->its_mapti_cmd.phys_id); + its_encode_collection(cmd, desc->its_mapti_cmd.col_id); + + its_fixup_cmd(cmd); + report_info("MAPTI dev_id=3D%d event_id=3D%d -> phys_id=3D%d, col_id=3D= %d", + desc->its_mapti_cmd.dev->device_id, + desc->its_mapti_cmd.event_id, + desc->its_mapti_cmd.phys_id, + desc->its_mapti_cmd.col_id); +} + +static void its_build_invall_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INVALL); + its_encode_collection(cmd, desc->its_invall_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("INVALL col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_clear_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_CLEAR); + its_encode_devid(cmd, desc->its_clear_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_clear_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("CLEAR col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_discard_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_DISCARD); + its_encode_devid(cmd, desc->its_discard_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_discard_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("DISCARD col_id=3D%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_inv_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INV); + its_encode_devid(cmd, desc->its_inv_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_inv_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INV dev_id=3D%d event_id=3D%d", + desc->its_inv_cmd.dev->device_id, + desc->its_inv_cmd.event_id); +} + +static void its_build_int_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INT); + its_encode_devid(cmd, desc->its_int_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_int_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INT dev_id=3D%d event_id=3D%d", + desc->its_int_cmd.dev->device_id, + desc->its_int_cmd.event_id); +} + +static void its_build_sync_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_SYNC); + its_encode_target(cmd, desc->its_sync_cmd.col->target_address); + its_fixup_cmd(cmd); + report_info("SYNC target_addr =3D 0x%lx", + desc->its_sync_cmd.col->target_address); +} + +static void its_build_movi_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MOVI); + its_encode_devid(cmd, desc->its_movi_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_movi_cmd.event_id); + its_encode_collection(cmd, desc->its_movi_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("MOVI dev_id=3D%d event_id =3D %d col_id=3D%d", + desc->its_movi_cmd.dev->device_id, + desc->its_movi_cmd.event_id, + desc->its_movi_cmd.col->col_id); +} + +void its_send_mapd(struct its_device *dev, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapd_cmd.dev =3D dev; + desc.its_mapd_cmd.valid =3D !!valid; + + its_send_single_command(its_build_mapd_cmd, &desc); +} + +void its_send_mapc(struct its_collection *col, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapc_cmd.col =3D col; + desc.its_mapc_cmd.valid =3D !!valid; + + its_send_single_command(its_build_mapc_cmd, &desc); +} + +void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_mapti_cmd.dev =3D dev; + desc.its_mapti_cmd.phys_id =3D irq_id; + desc.its_mapti_cmd.event_id =3D event_id; + desc.its_mapti_cmd.col_id =3D col->col_id; + + its_send_single_command(its_build_mapti_cmd, &desc); +} + +void its_send_int(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_int_cmd.dev =3D dev; + desc.its_int_cmd.event_id =3D event_id; + + its_send_single_command(its_build_int_cmd, &desc); +} + +void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id) +{ + struct its_cmd_desc desc; + + desc.its_movi_cmd.dev =3D dev; + desc.its_movi_cmd.col =3D col; + desc.its_movi_cmd.event_id =3D id; + + its_send_single_command(its_build_movi_cmd, &desc); +} + +void its_send_invall(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_invall_cmd.col =3D col; + + its_send_single_command(its_build_invall_cmd, &desc); +} + +void its_send_inv(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_inv_cmd.dev =3D dev; + desc.its_inv_cmd.event_id =3D event_id; + + its_send_single_command(its_build_inv_cmd, &desc); +} + +void its_send_discard(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_discard_cmd.dev =3D dev; + desc.its_discard_cmd.event_id =3D event_id; + + its_send_single_command(its_build_discard_cmd, &desc); +} + +void its_send_clear(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_clear_cmd.dev =3D dev; + desc.its_clear_cmd.event_id =3D event_id; + + its_send_single_command(its_build_clear_cmd, &desc); +} + +void its_send_sync(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_sync_cmd.col =3D col; + + its_send_single_command(its_build_sync_cmd, &desc); +} + --=20 2.20.1 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=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS 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 CB0B3C33CB2 for ; Tue, 28 Jan 2020 10:36:37 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 84C422467E for ; 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Tue, 28 Jan 2020 05:36:30 -0500 X-MC-Unique: U2jGCtRmO8iAIYcIG8p_xg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A0EED107ACC5; Tue, 28 Jan 2020 10:36:28 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-37.ams2.redhat.com [10.36.116.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD7B01001B30; Tue, 28 Jan 2020 10:36:22 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, maz@kernel.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Subject: [kvm-unit-tests PATCH v3 10/14] arm/arm64: ITS: commands Date: Tue, 28 Jan 2020 11:34:55 +0100 Message-Id: <20200128103459.19413-11-eric.auger@redhat.com> In-Reply-To: <20200128103459.19413-1-eric.auger@redhat.com> References: <20200128103459.19413-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Cc: andre.przywara@arm.com, thuth@redhat.com X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Implement main ITS commands. The code is largely inherited from the ITS driver. Signed-off-by: Eric Auger --- v2 -> v3: - do not use report() anymore - assert if cmd_write exceeds the queue capacity v1 -> v2: - removed its_print_cmd_state --- arm/Makefile.arm64 | 2 +- lib/arm/asm/gic-v3-its.h | 38 +++- lib/arm/gic-v3-its-cmd.c | 454 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 492 insertions(+), 2 deletions(-) create mode 100644 lib/arm/gic-v3-its-cmd.c diff --git a/arm/Makefile.arm64 b/arm/Makefile.arm64 index 2571ffb..d12aea5 100644 --- a/arm/Makefile.arm64 +++ b/arm/Makefile.arm64 @@ -19,7 +19,7 @@ endef cstart.o = $(TEST_DIR)/cstart64.o cflatobjs += lib/arm64/processor.o cflatobjs += lib/arm64/spinlock.o -cflatobjs += lib/arm/gic-v3-its.o +cflatobjs += lib/arm/gic-v3-its.o lib/arm/gic-v3-its-cmd.o OBJDIRS += lib/arm64 diff --git a/lib/arm/asm/gic-v3-its.h b/lib/arm/asm/gic-v3-its.h index acd97a9..0e5c5b6 100644 --- a/lib/arm/asm/gic-v3-its.h +++ b/lib/arm/asm/gic-v3-its.h @@ -45,6 +45,8 @@ struct its_collection { u16 col_id; }; +struct its_cmd_block; + struct its_data { void *base; struct its_typer typer; @@ -107,6 +109,24 @@ extern struct its_data its_data; #define GITS_BASER_TYPE_DEVICE 1 #define GITS_BASER_TYPE_COLLECTION 4 +/* + * ITS commands + */ +#define GITS_CMD_MAPD 0x08 +#define GITS_CMD_MAPC 0x09 +#define GITS_CMD_MAPTI 0x0a +/* older GIC documentation used MAPVI for this command */ +#define GITS_CMD_MAPVI GITS_CMD_MAPTI +#define GITS_CMD_MAPI 0x0b +#define GITS_CMD_MOVI 0x01 +#define GITS_CMD_DISCARD 0x0f +#define GITS_CMD_INV 0x0c +#define GITS_CMD_MOVALL 0x0e +#define GITS_CMD_INVALL 0x0d +#define GITS_CMD_INT 0x03 +#define GITS_CMD_CLEAR 0x04 +#define GITS_CMD_SYNC 0x05 + struct its_cmd_block { u64 raw_cmd[4]; }; @@ -119,11 +139,27 @@ extern void its_enable_defaults(void); extern struct its_device *its_create_device(u32 dev_id, int nr_ites); extern struct its_collection *its_create_collection(u32 col_id, u32 target_pe); +extern void its_send_mapd(struct its_device *dev, int valid); +extern void its_send_mapc(struct its_collection *col, int valid); +extern void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col); +extern void its_send_int(struct its_device *dev, u32 event_id); +extern void its_send_inv(struct its_device *dev, u32 event_id); +extern void its_send_discard(struct its_device *dev, u32 event_id); +extern void its_send_clear(struct its_device *dev, u32 event_id); +extern void its_send_invall(struct its_collection *col); +extern void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id); +extern void its_send_sync(struct its_collection *col); + +#define ITS_FLAGS_CMDQ_NEEDS_FLUSHING (1ULL << 0) +#define ITS_FLAGS_WORKAROUND_CAVIUM_22375 (1ULL << 1) +#define ITS_FLAGS_WORKAROUND_CAVIUM_23144 (1ULL << 2) + #else /* __arm__ */ static inline void its_init(void) {} #endif - #endif /* !__ASSEMBLY__ */ #endif /* _ASMARM_GIC_V3_ITS_H_ */ diff --git a/lib/arm/gic-v3-its-cmd.c b/lib/arm/gic-v3-its-cmd.c new file mode 100644 index 0000000..fb4364c --- /dev/null +++ b/lib/arm/gic-v3-its-cmd.c @@ -0,0 +1,454 @@ +/* + * Copyright (C) 2020, Red Hat Inc, Eric Auger + * + * Most of the code is copy-pasted from: + * drivers/irqchip/irq-gic-v3-its.c + * This work is licensed under the terms of the GNU LGPL, version 2. + */ +#include +#include +#include + +#define ITS_ITT_ALIGN SZ_256 + +static const char * const its_cmd_string[] = { + [GITS_CMD_MAPD] = "MAPD", + [GITS_CMD_MAPC] = "MAPC", + [GITS_CMD_MAPTI] = "MAPTI", + [GITS_CMD_MAPI] = "MAPI", + [GITS_CMD_MOVI] = "MOVI", + [GITS_CMD_DISCARD] = "DISCARD", + [GITS_CMD_INV] = "INV", + [GITS_CMD_MOVALL] = "MOVALL", + [GITS_CMD_INVALL] = "INVALL", + [GITS_CMD_INT] = "INT", + [GITS_CMD_CLEAR] = "CLEAR", + [GITS_CMD_SYNC] = "SYNC", +}; + +struct its_cmd_desc { + union { + struct { + struct its_device *dev; + u32 event_id; + } its_inv_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_int_cmd; + + struct { + struct its_device *dev; + bool valid; + } its_mapd_cmd; + + struct { + struct its_collection *col; + bool valid; + } its_mapc_cmd; + + struct { + struct its_device *dev; + u32 phys_id; + u32 event_id; + u32 col_id; + } its_mapti_cmd; + + struct { + struct its_device *dev; + struct its_collection *col; + u32 event_id; + } its_movi_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_discard_cmd; + + struct { + struct its_device *dev; + u32 event_id; + } its_clear_cmd; + + struct { + struct its_collection *col; + } its_invall_cmd; + + struct { + struct its_collection *col; + } its_sync_cmd; + }; +}; + +typedef void (*its_cmd_builder_t)(struct its_cmd_block *, + struct its_cmd_desc *); + +/* ITS COMMANDS */ + +static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr) +{ + cmd->raw_cmd[0] &= ~0xffUL; + cmd->raw_cmd[0] |= cmd_nr; +} + +static void its_encode_devid(struct its_cmd_block *cmd, u32 devid) +{ + cmd->raw_cmd[0] &= BIT_ULL(32) - 1; + cmd->raw_cmd[0] |= ((u64)devid) << 32; +} + +static void its_encode_event_id(struct its_cmd_block *cmd, u32 id) +{ + cmd->raw_cmd[1] &= ~0xffffffffUL; + cmd->raw_cmd[1] |= id; +} + +static void its_encode_phys_id(struct its_cmd_block *cmd, u32 phys_id) +{ + cmd->raw_cmd[1] &= 0xffffffffUL; + cmd->raw_cmd[1] |= ((u64)phys_id) << 32; +} + +static void its_encode_size(struct its_cmd_block *cmd, u8 size) +{ + cmd->raw_cmd[1] &= ~0x1fUL; + cmd->raw_cmd[1] |= size & 0x1f; +} + +static void its_encode_itt(struct its_cmd_block *cmd, u64 itt_addr) +{ + cmd->raw_cmd[2] &= ~0xffffffffffffUL; + cmd->raw_cmd[2] |= itt_addr & 0xffffffffff00UL; +} + +static void its_encode_valid(struct its_cmd_block *cmd, int valid) +{ + cmd->raw_cmd[2] &= ~(1UL << 63); + cmd->raw_cmd[2] |= ((u64)!!valid) << 63; +} + +static void its_encode_target(struct its_cmd_block *cmd, u64 target_addr) +{ + cmd->raw_cmd[2] &= ~(0xfffffffffUL << 16); + cmd->raw_cmd[2] |= (target_addr & (0xffffffffUL << 16)); +} + +static void its_encode_collection(struct its_cmd_block *cmd, u16 col) +{ + cmd->raw_cmd[2] &= ~0xffffUL; + cmd->raw_cmd[2] |= col; +} + +static inline void its_fixup_cmd(struct its_cmd_block *cmd) +{ + /* Let's fixup BE commands */ + cmd->raw_cmd[0] = cpu_to_le64(cmd->raw_cmd[0]); + cmd->raw_cmd[1] = cpu_to_le64(cmd->raw_cmd[1]); + cmd->raw_cmd[2] = cpu_to_le64(cmd->raw_cmd[2]); + cmd->raw_cmd[3] = cpu_to_le64(cmd->raw_cmd[3]); +} + +static u64 its_cmd_ptr_to_offset(struct its_cmd_block *ptr) +{ + return (ptr - its_data.cmd_base) * sizeof(*ptr); +} + +static struct its_cmd_block *its_post_commands(void) +{ + u64 wr = its_cmd_ptr_to_offset(its_data.cmd_write); + + writeq(wr, its_data.base + GITS_CWRITER); + return its_data.cmd_write; +} + + +static struct its_cmd_block *its_allocate_entry(void) +{ + struct its_cmd_block *cmd; + + assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K); + cmd = its_data.cmd_write++; + return cmd; +} + +static void its_wait_for_range_completion(struct its_cmd_block *from, + struct its_cmd_block *to) +{ + u64 rd_idx, from_idx, to_idx; + u32 count = 1000000; /* 1s! */ + + from_idx = its_cmd_ptr_to_offset(from); + to_idx = its_cmd_ptr_to_offset(to); + while (1) { + rd_idx = readq(its_data.base + GITS_CREADR); + if (rd_idx >= to_idx || rd_idx < from_idx) + break; + + count--; + if (!count) { + unsigned int cmd_id = from->raw_cmd[0] & 0xFF; + + assert_msg(false, "%s timeout!", + cmd_id <= 0xF ? its_cmd_string[cmd_id] : + "Unexpected"); + return; + } + cpu_relax(); + udelay(1); + } +} + +static void its_send_single_command(its_cmd_builder_t builder, + struct its_cmd_desc *desc) +{ + struct its_cmd_block *cmd, *next_cmd; + + cmd = its_allocate_entry(); + builder(cmd, desc); + next_cmd = its_post_commands(); + + its_wait_for_range_completion(cmd, next_cmd); +} + + +static void its_build_mapd_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + unsigned long itt_addr; + u8 size = 12; /* 4096 eventids */ + + itt_addr = (unsigned long)desc->its_mapd_cmd.dev->itt; + itt_addr = ALIGN(itt_addr, ITS_ITT_ALIGN); + + its_encode_cmd(cmd, GITS_CMD_MAPD); + its_encode_devid(cmd, desc->its_mapd_cmd.dev->device_id); + its_encode_size(cmd, size - 1); + its_encode_itt(cmd, itt_addr); + its_encode_valid(cmd, desc->its_mapd_cmd.valid); + + its_fixup_cmd(cmd); + printf("ITS: MAPD devid=%d size = 0x%x itt=0x%lx valid=%d\n", + desc->its_mapd_cmd.dev->device_id, + size, itt_addr, desc->its_mapd_cmd.valid); + +} + +static void its_build_mapc_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPC); + its_encode_collection(cmd, desc->its_mapc_cmd.col->col_id); + its_encode_target(cmd, desc->its_mapc_cmd.col->target_address); + its_encode_valid(cmd, desc->its_mapc_cmd.valid); + + its_fixup_cmd(cmd); + report_info("MAPC col_id=%d target_addr = 0x%lx valid=%d", + desc->its_mapc_cmd.col->col_id, + desc->its_mapc_cmd.col->target_address, + desc->its_mapc_cmd.valid); +} + +static void its_build_mapti_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MAPTI); + its_encode_devid(cmd, desc->its_mapti_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_mapti_cmd.event_id); + its_encode_phys_id(cmd, desc->its_mapti_cmd.phys_id); + its_encode_collection(cmd, desc->its_mapti_cmd.col_id); + + its_fixup_cmd(cmd); + report_info("MAPTI dev_id=%d event_id=%d -> phys_id=%d, col_id=%d", + desc->its_mapti_cmd.dev->device_id, + desc->its_mapti_cmd.event_id, + desc->its_mapti_cmd.phys_id, + desc->its_mapti_cmd.col_id); +} + +static void its_build_invall_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INVALL); + its_encode_collection(cmd, desc->its_invall_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("INVALL col_id=%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_clear_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_CLEAR); + its_encode_devid(cmd, desc->its_clear_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_clear_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("CLEAR col_id=%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_discard_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_DISCARD); + its_encode_devid(cmd, desc->its_discard_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_discard_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("DISCARD col_id=%d", desc->its_invall_cmd.col->col_id); +} + +static void its_build_inv_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INV); + its_encode_devid(cmd, desc->its_inv_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_inv_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INV dev_id=%d event_id=%d", + desc->its_inv_cmd.dev->device_id, + desc->its_inv_cmd.event_id); +} + +static void its_build_int_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_INT); + its_encode_devid(cmd, desc->its_int_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_int_cmd.event_id); + + its_fixup_cmd(cmd); + report_info("INT dev_id=%d event_id=%d", + desc->its_int_cmd.dev->device_id, + desc->its_int_cmd.event_id); +} + +static void its_build_sync_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_SYNC); + its_encode_target(cmd, desc->its_sync_cmd.col->target_address); + its_fixup_cmd(cmd); + report_info("SYNC target_addr = 0x%lx", + desc->its_sync_cmd.col->target_address); +} + +static void its_build_movi_cmd(struct its_cmd_block *cmd, + struct its_cmd_desc *desc) +{ + its_encode_cmd(cmd, GITS_CMD_MOVI); + its_encode_devid(cmd, desc->its_movi_cmd.dev->device_id); + its_encode_event_id(cmd, desc->its_movi_cmd.event_id); + its_encode_collection(cmd, desc->its_movi_cmd.col->col_id); + + its_fixup_cmd(cmd); + report_info("MOVI dev_id=%d event_id = %d col_id=%d", + desc->its_movi_cmd.dev->device_id, + desc->its_movi_cmd.event_id, + desc->its_movi_cmd.col->col_id); +} + +void its_send_mapd(struct its_device *dev, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapd_cmd.dev = dev; + desc.its_mapd_cmd.valid = !!valid; + + its_send_single_command(its_build_mapd_cmd, &desc); +} + +void its_send_mapc(struct its_collection *col, int valid) +{ + struct its_cmd_desc desc; + + desc.its_mapc_cmd.col = col; + desc.its_mapc_cmd.valid = !!valid; + + its_send_single_command(its_build_mapc_cmd, &desc); +} + +void its_send_mapti(struct its_device *dev, u32 irq_id, + u32 event_id, struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_mapti_cmd.dev = dev; + desc.its_mapti_cmd.phys_id = irq_id; + desc.its_mapti_cmd.event_id = event_id; + desc.its_mapti_cmd.col_id = col->col_id; + + its_send_single_command(its_build_mapti_cmd, &desc); +} + +void its_send_int(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_int_cmd.dev = dev; + desc.its_int_cmd.event_id = event_id; + + its_send_single_command(its_build_int_cmd, &desc); +} + +void its_send_movi(struct its_device *dev, + struct its_collection *col, u32 id) +{ + struct its_cmd_desc desc; + + desc.its_movi_cmd.dev = dev; + desc.its_movi_cmd.col = col; + desc.its_movi_cmd.event_id = id; + + its_send_single_command(its_build_movi_cmd, &desc); +} + +void its_send_invall(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_invall_cmd.col = col; + + its_send_single_command(its_build_invall_cmd, &desc); +} + +void its_send_inv(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_inv_cmd.dev = dev; + desc.its_inv_cmd.event_id = event_id; + + its_send_single_command(its_build_inv_cmd, &desc); +} + +void its_send_discard(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_discard_cmd.dev = dev; + desc.its_discard_cmd.event_id = event_id; + + its_send_single_command(its_build_discard_cmd, &desc); +} + +void its_send_clear(struct its_device *dev, u32 event_id) +{ + struct its_cmd_desc desc; + + desc.its_clear_cmd.dev = dev; + desc.its_clear_cmd.event_id = event_id; + + its_send_single_command(its_build_clear_cmd, &desc); +} + +void its_send_sync(struct its_collection *col) +{ + struct its_cmd_desc desc; + + desc.its_sync_cmd.col = col; + + its_send_single_command(its_build_sync_cmd, &desc); +} + -- 2.20.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm