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=-15.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 72A76C2B9F4 for ; Mon, 14 Jun 2021 18:21:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 24AA4613B3 for ; Mon, 14 Jun 2021 18:21:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 24AA4613B3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E1A3989C07; Mon, 14 Jun 2021 18:21:30 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3BC7889C07; Mon, 14 Jun 2021 18:21:29 +0000 (UTC) IronPort-SDR: knOqksFEVoy2VQWY8eoMWgN1rlfHs/QZS1LcsF2ZfDK/Xsd2r2wcd7VS8Yv6wBy4UbZsEnqKjV FL+feR95oGfQ== X-IronPort-AV: E=McAfee;i="6200,9189,10015"; a="185550454" X-IronPort-AV: E=Sophos;i="5.83,273,1616482800"; d="scan'208";a="185550454" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2021 11:21:27 -0700 IronPort-SDR: D3wte5jjFO/YvTe5Cqk3ROh7w1Vw5PSNGHS7SHsWf+X9ZjaB2ItsPGoyek41o/u+LXUeX6SHNE SUsUv/P+NO8w== X-IronPort-AV: E=Sophos;i="5.83,273,1616482800"; d="scan'208";a="451676187" Received: from dceraolo-mobl.amr.corp.intel.com (HELO [10.254.188.63]) ([10.254.188.63]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2021 11:21:27 -0700 Subject: Re: [PATCH 07/13] drm/i915/guc: New definition of the CTB registration action To: Matthew Brost , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org References: <20210610043649.144416-1-matthew.brost@intel.com> <20210610043649.144416-8-matthew.brost@intel.com> From: Daniele Ceraolo Spurio Message-ID: Date: Mon, 14 Jun 2021 11:21:27 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210610043649.144416-8-matthew.brost@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: john.c.harrison@intel.com, Michal.Wajdeczko@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 6/9/2021 9:36 PM, Matthew Brost wrote: > From: Michal Wajdeczko > > Definition of the CTB registration action has changed. > Add some ABI documentation and implement required changes. > > v2: > (Checkpoint) > - Fix warnings > (Daniele) > - Drop FIXME > (John H) > - Drop value in kernel doc, just use define > > Signed-off-by: Michal Wajdeczko > Signed-off-by: Matthew Brost > Cc: Piotr Piórkowski #4 This #v4 here can be dropped, doesn't make match sense for a Cc tag. Probably going away with the mega-squash anyway. Reviewed-by: Daniele Ceraolo Spurio Daniele > --- > .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 107 ++++++++++++++++++ > .../gt/uc/abi/guc_communication_ctb_abi.h | 4 - > drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 76 ++++++++----- > 3 files changed, 152 insertions(+), 35 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h > index 90efef8a73e4..dfaea0b54370 100644 > --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h > +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h > @@ -6,6 +6,113 @@ > #ifndef _ABI_GUC_ACTIONS_ABI_H > #define _ABI_GUC_ACTIONS_ABI_H > > +/** > + * DOC: HOST2GUC_REGISTER_CTB > + * > + * This message is used as part of the `CTB based communication`_ setup. > + * > + * This message must be sent as `MMIO HXG Message`_. > + * > + * +---+-------+--------------------------------------------------------------+ > + * | | Bits | Description | > + * +===+=======+==============================================================+ > + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_HOST_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 27:16 | DATA0 = MBZ | > + * | +-------+--------------------------------------------------------------+ > + * | | 15:0 | ACTION = _`GUC_ACTION_HOST2GUC_REGISTER_CTB` | > + * +---+-------+--------------------------------------------------------------+ > + * | 1 | 31:12 | RESERVED = MBZ | > + * | +-------+--------------------------------------------------------------+ > + * | | 11:8 | **TYPE** - type for the `CT Buffer`_ | > + * | | | | > + * | | | - _`GUC_CTB_TYPE_HOST2GUC` = 0 | > + * | | | - _`GUC_CTB_TYPE_GUC2HOST` = 1 | > + * | +-------+--------------------------------------------------------------+ > + * | | 7:0 | **SIZE** - size of the `CT Buffer`_ in 4K units minus 1 | > + * +---+-------+--------------------------------------------------------------+ > + * | 2 | 31:0 | **DESC_ADDR** - GGTT address of the `CTB Descriptor`_ | > + * +---+-------+--------------------------------------------------------------+ > + * | 3 | 31:0 | **BUFF_ADDF** - GGTT address of the `CT Buffer`_ | > + * +---+-------+--------------------------------------------------------------+ > + * > + * +---+-------+--------------------------------------------------------------+ > + * | | Bits | Description | > + * +===+=======+==============================================================+ > + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_GUC_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 27:0 | DATA0 = MBZ | > + * +---+-------+--------------------------------------------------------------+ > + */ > +#define GUC_ACTION_HOST2GUC_REGISTER_CTB 0x4505 > + > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN (GUC_HXG_REQUEST_MSG_MIN_LEN + 3u) > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_0_MBZ GUC_HXG_REQUEST_MSG_0_DATA0 > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_MBZ (0xfffff << 12) > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE (0xf << 8) > +#define GUC_CTB_TYPE_HOST2GUC 0u > +#define GUC_CTB_TYPE_GUC2HOST 1u > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE (0xff << 0) > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR GUC_HXG_REQUEST_MSG_n_DATAn > +#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR GUC_HXG_REQUEST_MSG_n_DATAn > + > +#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_LEN GUC_HXG_RESPONSE_MSG_MIN_LEN > +#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_0_MBZ GUC_HXG_RESPONSE_MSG_0_DATA0 > + > +/** > + * DOC: HOST2GUC_DEREGISTER_CTB > + * > + * This message is used as part of the `CTB based communication`_ teardown. > + * > + * This message must be sent as `MMIO HXG Message`_. > + * > + * +---+-------+--------------------------------------------------------------+ > + * | | Bits | Description | > + * +===+=======+==============================================================+ > + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_HOST_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 27:16 | DATA0 = MBZ | > + * | +-------+--------------------------------------------------------------+ > + * | | 15:0 | ACTION = _`GUC_ACTION_HOST2GUC_DEREGISTER_CTB` | > + * +---+-------+--------------------------------------------------------------+ > + * | 1 | 31:12 | RESERVED = MBZ | > + * | +-------+--------------------------------------------------------------+ > + * | | 11:8 | **TYPE** - type of the `CT Buffer`_ | > + * | | | | > + * | | | see `GUC_ACTION_HOST2GUC_REGISTER_CTB`_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 7:0 | RESERVED = MBZ | > + * +---+-------+--------------------------------------------------------------+ > + * > + * +---+-------+--------------------------------------------------------------+ > + * | | Bits | Description | > + * +===+=======+==============================================================+ > + * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_GUC_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_ | > + * | +-------+--------------------------------------------------------------+ > + * | | 27:0 | DATA0 = MBZ | > + * +---+-------+--------------------------------------------------------------+ > + */ > +#define GUC_ACTION_HOST2GUC_DEREGISTER_CTB 0x4506 > + > +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN (GUC_HXG_REQUEST_MSG_MIN_LEN + 1u) > +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_0_MBZ GUC_HXG_REQUEST_MSG_0_DATA0 > +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ (0xfffff << 12) > +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE (0xf << 8) > +#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ2 (0xff << 0) > + > +#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_LEN GUC_HXG_RESPONSE_MSG_MIN_LEN > +#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_0_MBZ GUC_HXG_RESPONSE_MSG_0_DATA0 > + > +/* legacy definitions */ > + > enum intel_guc_action { > INTEL_GUC_ACTION_DEFAULT = 0x0, > INTEL_GUC_ACTION_REQUEST_PREEMPTION = 0x2, > diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h > index 88f1fc2a19e0..6735f1fdaa2a 100644 > --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h > +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h > @@ -110,10 +110,6 @@ static_assert(sizeof(struct guc_ct_buffer_desc) == 64); > * - **flags**, holds various bits to control message handling > */ > > -/* Type of command transport buffer */ > -#define INTEL_GUC_CT_BUFFER_TYPE_SEND 0x0u > -#define INTEL_GUC_CT_BUFFER_TYPE_RECV 0x1u > - > /* > * Definition of the command transport message header (DW0) > * > diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > index 3241a477196f..6a29be779cc9 100644 > --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c > @@ -103,9 +103,9 @@ void intel_guc_ct_init_early(struct intel_guc_ct *ct) > static inline const char *guc_ct_buffer_type_to_str(u32 type) > { > switch (type) { > - case INTEL_GUC_CT_BUFFER_TYPE_SEND: > + case GUC_CTB_TYPE_HOST2GUC: > return "SEND"; > - case INTEL_GUC_CT_BUFFER_TYPE_RECV: > + case GUC_CTB_TYPE_GUC2HOST: > return "RECV"; > default: > return ""; > @@ -136,25 +136,33 @@ static void guc_ct_buffer_init(struct intel_guc_ct_buffer *ctb, > guc_ct_buffer_reset(ctb); > } > > -static int guc_action_register_ct_buffer(struct intel_guc *guc, > - u32 desc_addr, > - u32 type) > +static int guc_action_register_ct_buffer(struct intel_guc *guc, u32 type, > + u32 desc_addr, u32 buff_addr, u32 size) > { > - u32 action[] = { > - INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER, > - desc_addr, > - sizeof(struct guc_ct_buffer_desc), > - type > + u32 request[HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN] = { > + FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) | > + FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) | > + FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, GUC_ACTION_HOST2GUC_REGISTER_CTB), > + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE, size / SZ_4K - 1) | > + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE, type), > + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR, desc_addr), > + FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR, buff_addr), > }; > > - /* Can't use generic send(), CT registration must go over MMIO */ > - return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); > + GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != GUC_CTB_TYPE_GUC2HOST); > + GEM_BUG_ON(size % SZ_4K); > + > + /* CT registration must go over MMIO */ > + return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0); > } > > -static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type) > +static int ct_register_buffer(struct intel_guc_ct *ct, u32 type, > + u32 desc_addr, u32 buff_addr, u32 size) > { > - int err = guc_action_register_ct_buffer(ct_to_guc(ct), desc_addr, type); > + int err; > > + err = guc_action_register_ct_buffer(ct_to_guc(ct), type, > + desc_addr, buff_addr, size); > if (unlikely(err)) > CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n", > guc_ct_buffer_type_to_str(type), err); > @@ -163,14 +171,17 @@ static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type) > > static int guc_action_deregister_ct_buffer(struct intel_guc *guc, u32 type) > { > - u32 action[] = { > - INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER, > - CTB_OWNER_HOST, > - type > + u32 request[HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN] = { > + FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) | > + FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) | > + FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, GUC_ACTION_HOST2GUC_DEREGISTER_CTB), > + FIELD_PREP(HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE, type), > }; > > - /* Can't use generic send(), CT deregistration must go over MMIO */ > - return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); > + GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != GUC_CTB_TYPE_GUC2HOST); > + > + /* CT deregistration must go over MMIO */ > + return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0); > } > > static int ct_deregister_buffer(struct intel_guc_ct *ct, u32 type) > @@ -258,7 +269,7 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct) > int intel_guc_ct_enable(struct intel_guc_ct *ct) > { > struct intel_guc *guc = ct_to_guc(ct); > - u32 base, cmds; > + u32 base, desc, cmds; > void *blob; > int err; > > @@ -274,23 +285,26 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) > GEM_BUG_ON(blob != ct->ctbs.send.desc); > > /* (re)initialize descriptors */ > - cmds = base + ptrdiff(ct->ctbs.send.cmds, blob); > guc_ct_buffer_reset(&ct->ctbs.send); > - > - cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob); > guc_ct_buffer_reset(&ct->ctbs.recv); > > /* > * Register both CT buffers starting with RECV buffer. > * Descriptors are in first half of the blob. > */ > - err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.recv.desc, blob), > - INTEL_GUC_CT_BUFFER_TYPE_RECV); > + desc = base + ptrdiff(ct->ctbs.recv.desc, blob); > + cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob); > + err = ct_register_buffer(ct, GUC_CTB_TYPE_GUC2HOST, > + desc, cmds, ct->ctbs.recv.size * 4); > + > if (unlikely(err)) > goto err_out; > > - err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.send.desc, blob), > - INTEL_GUC_CT_BUFFER_TYPE_SEND); > + desc = base + ptrdiff(ct->ctbs.send.desc, blob); > + cmds = base + ptrdiff(ct->ctbs.send.cmds, blob); > + err = ct_register_buffer(ct, GUC_CTB_TYPE_HOST2GUC, > + desc, cmds, ct->ctbs.send.size * 4); > + > if (unlikely(err)) > goto err_deregister; > > @@ -299,7 +313,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) > return 0; > > err_deregister: > - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); > + ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST); > err_out: > CT_PROBE_ERROR(ct, "Failed to enable CTB (%pe)\n", ERR_PTR(err)); > return err; > @@ -318,8 +332,8 @@ void intel_guc_ct_disable(struct intel_guc_ct *ct) > ct->enabled = false; > > if (intel_guc_is_fw_running(guc)) { > - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_SEND); > - ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); > + ct_deregister_buffer(ct, GUC_CTB_TYPE_HOST2GUC); > + ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST); > } > } >