From patchwork Tue Jun 7 19:07:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Lyude Paul X-Patchwork-Id: 12872273 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A320AC433EF for ; Tue, 7 Jun 2022 19:11:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 100D010EF6F; Tue, 7 Jun 2022 19:11:01 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id EEC1910EF40 for ; Tue, 7 Jun 2022 19:10:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1654629058; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eRq46kAYDt3qC3J5COV22ywbnzIkY0HqgrBcO+W8oJE=; b=arsBL9y2PvsEIExc48iJvFgvh1/8VHo2ynjcOaXTvQfeVkANpGKfFQNAa/32Xpc8gpwCSs RC5dgZ+07F9Tcxgiv3YTQQ/SxQGAM69BboOnxmcoQmqU6tGK9uNfay0a5/I9fHfUlUTnNh 2GcGdPLXaer37yhN8O4m1kfHEGoExNw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-359-I7JZzLRmMcyO3mfnMH4x5w-1; Tue, 07 Jun 2022 15:10:52 -0400 X-MC-Unique: I7JZzLRmMcyO3mfnMH4x5w-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 92A91185A7BA; Tue, 7 Jun 2022 19:09:26 +0000 (UTC) Received: from emerald.redhat.com (unknown [10.22.9.252]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4A7464116D69; Tue, 7 Jun 2022 19:08:56 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, amd-gfx@lists.freedesktop.org Subject: [RFC 03/18] drm/display/dp_mst: Rename drm_dp_mst_vcpi_allocation Date: Tue, 7 Jun 2022 15:07:00 -0400 Message-Id: <20220607190715.1331124-4-lyude@redhat.com> In-Reply-To: <20220607190715.1331124-1-lyude@redhat.com> References: <20220607190715.1331124-1-lyude@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 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: Thomas Zimmermann , Jani Nikula , Daniel Vetter , Javier Martinez Canillas , open list , Bhawanpreet Lakha , David Airlie , Fangzhi Zuo , Wayne Lin , Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In retrospect, the name I chose for this originally is confusing, as there's a lot more info in here then just the VCPI. This really should be called a payload. Let's make it more obvious that this is meant to be related to the atomic state and is about payloads by renaming it to drm_dp_mst_atomic_payload. Also, rename various variables throughout the code that use atomic payloads. Signed-off-by: Lyude Paul Cc: Wayne Lin Cc: Ville Syrjälä Cc: Fangzhi Zuo Cc: Jani Nikula Cc: Imre Deak Cc: Daniel Vetter Cc: Sean Paul --- drivers/gpu/drm/display/drm_dp_mst_topology.c | 96 +++++++++---------- include/drm/display/drm_dp_mst_helper.h | 4 +- 2 files changed, 50 insertions(+), 50 deletions(-) diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c index 67b3b9697da7..38eecb89e22d 100644 --- a/drivers/gpu/drm/display/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c @@ -4381,7 +4381,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, int pbn_div) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_vcpi_allocation *pos, *vcpi = NULL; + struct drm_dp_mst_atomic_payload *pos, *payload = NULL; int prev_slots, prev_bw, req_slots; topology_state = drm_atomic_get_mst_topology_state(state, mgr); @@ -4389,11 +4389,11 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, return PTR_ERR(topology_state); /* Find the current allocation for this port, if any */ - list_for_each_entry(pos, &topology_state->vcpis, next) { + list_for_each_entry(pos, &topology_state->payloads, next) { if (pos->port == port) { - vcpi = pos; - prev_slots = vcpi->vcpi; - prev_bw = vcpi->pbn; + payload = pos; + prev_slots = payload->vcpi; + prev_bw = payload->pbn; /* * This should never happen, unless the driver tries @@ -4410,7 +4410,7 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, break; } } - if (!vcpi) { + if (!payload) { prev_slots = 0; prev_bw = 0; } @@ -4428,17 +4428,17 @@ int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state, port, prev_bw, pbn); /* Add the new allocation to the state */ - if (!vcpi) { - vcpi = kzalloc(sizeof(*vcpi), GFP_KERNEL); - if (!vcpi) + if (!payload) { + payload = kzalloc(sizeof(*payload), GFP_KERNEL); + if (!payload) return -ENOMEM; drm_dp_mst_get_port_malloc(port); - vcpi->port = port; - list_add(&vcpi->next, &topology_state->vcpis); + payload->port = port; + list_add(&payload->next, &topology_state->payloads); } - vcpi->vcpi = req_slots; - vcpi->pbn = pbn; + payload->vcpi = req_slots; + payload->pbn = pbn; return req_slots; } @@ -4475,21 +4475,21 @@ int drm_dp_atomic_release_vcpi_slots(struct drm_atomic_state *state, struct drm_dp_mst_port *port) { struct drm_dp_mst_topology_state *topology_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; bool found = false; topology_state = drm_atomic_get_mst_topology_state(state, mgr); if (IS_ERR(topology_state)) return PTR_ERR(topology_state); - list_for_each_entry(pos, &topology_state->vcpis, next) { + list_for_each_entry(pos, &topology_state->payloads, next) { if (pos->port == port) { found = true; break; } } if (WARN_ON(!found)) { - drm_err(mgr->dev, "no VCPI for [MST PORT:%p] found in mst state %p\n", + drm_err(mgr->dev, "No payload for [MST PORT:%p] found in mst state %p\n", port, &topology_state->base); return -EINVAL; } @@ -5072,7 +5072,7 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) { struct drm_dp_mst_topology_state *state, *old_state = to_dp_mst_topology_state(obj->state); - struct drm_dp_vcpi_allocation *pos, *vcpi; + struct drm_dp_mst_atomic_payload *pos, *payload; state = kmemdup(old_state, sizeof(*state), GFP_KERNEL); if (!state) @@ -5080,25 +5080,25 @@ drm_dp_mst_duplicate_state(struct drm_private_obj *obj) __drm_atomic_helper_private_obj_duplicate_state(obj, &state->base); - INIT_LIST_HEAD(&state->vcpis); + INIT_LIST_HEAD(&state->payloads); - list_for_each_entry(pos, &old_state->vcpis, next) { + list_for_each_entry(pos, &old_state->payloads, next) { /* Prune leftover freed VCPI allocations */ if (!pos->vcpi) continue; - vcpi = kmemdup(pos, sizeof(*vcpi), GFP_KERNEL); - if (!vcpi) + payload = kmemdup(pos, sizeof(*payload), GFP_KERNEL); + if (!payload) goto fail; - drm_dp_mst_get_port_malloc(vcpi->port); - list_add(&vcpi->next, &state->vcpis); + drm_dp_mst_get_port_malloc(payload->port); + list_add(&payload->next, &state->payloads); } return &state->base; fail: - list_for_each_entry_safe(pos, vcpi, &state->vcpis, next) { + list_for_each_entry_safe(pos, payload, &state->payloads, next) { drm_dp_mst_put_port_malloc(pos->port); kfree(pos); } @@ -5112,9 +5112,9 @@ static void drm_dp_mst_destroy_state(struct drm_private_obj *obj, { struct drm_dp_mst_topology_state *mst_state = to_dp_mst_topology_state(state); - struct drm_dp_vcpi_allocation *pos, *tmp; + struct drm_dp_mst_atomic_payload *pos, *tmp; - list_for_each_entry_safe(pos, tmp, &mst_state->vcpis, next) { + list_for_each_entry_safe(pos, tmp, &mst_state->payloads, next) { /* We only keep references to ports with non-zero VCPIs */ if (pos->vcpi) drm_dp_mst_put_port_malloc(pos->port); @@ -5147,7 +5147,7 @@ static int drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb, struct drm_dp_mst_topology_state *state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; struct drm_dp_mst_port *port; int pbn_used = 0, ret; bool found = false; @@ -5155,9 +5155,9 @@ drm_dp_mst_atomic_check_mstb_bw_limit(struct drm_dp_mst_branch *mstb, /* Check that we have at least one port in our state that's downstream * of this branch, otherwise we can skip this branch */ - list_for_each_entry(vcpi, &state->vcpis, next) { - if (!vcpi->pbn || - !drm_dp_mst_port_downstream_of_branch(vcpi->port, mstb)) + list_for_each_entry(payload, &state->payloads, next) { + if (!payload->pbn || + !drm_dp_mst_port_downstream_of_branch(payload->port, mstb)) continue; found = true; @@ -5188,7 +5188,7 @@ static int drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, struct drm_dp_mst_topology_state *state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; int pbn_used = 0; if (port->pdt == DP_PEER_DEVICE_NONE) @@ -5197,10 +5197,10 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, if (drm_dp_mst_is_end_device(port->pdt, port->mcs)) { bool found = false; - list_for_each_entry(vcpi, &state->vcpis, next) { - if (vcpi->port != port) + list_for_each_entry(payload, &state->payloads, next) { + if (payload->port != port) continue; - if (!vcpi->pbn) + if (!payload->pbn) return 0; found = true; @@ -5220,7 +5220,7 @@ drm_dp_mst_atomic_check_port_bw_limit(struct drm_dp_mst_port *port, return -EINVAL; } - pbn_used = vcpi->pbn; + pbn_used = payload->pbn; } else { pbn_used = drm_dp_mst_atomic_check_mstb_bw_limit(port->mstb, state); @@ -5245,25 +5245,25 @@ static inline int drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_topology_state *mst_state) { - struct drm_dp_vcpi_allocation *vcpi; + struct drm_dp_mst_atomic_payload *payload; int avail_slots = mst_state->total_avail_slots, payload_count = 0; - list_for_each_entry(vcpi, &mst_state->vcpis, next) { - /* Releasing VCPI is always OK-even if the port is gone */ - if (!vcpi->vcpi) { + list_for_each_entry(payload, &mst_state->payloads, next) { + /* Releasing payloads is always OK-even if the port is gone */ + if (!payload->vcpi) { drm_dbg_atomic(mgr->dev, "[MST PORT:%p] releases all VCPI slots\n", - vcpi->port); + payload->port); continue; } drm_dbg_atomic(mgr->dev, "[MST PORT:%p] requires %d vcpi slots\n", - vcpi->port, vcpi->vcpi); + payload->port, payload->vcpi); - avail_slots -= vcpi->vcpi; + avail_slots -= payload->vcpi; if (avail_slots < 0) { drm_dbg_atomic(mgr->dev, "[MST PORT:%p] not enough VCPI slots in mst state %p (avail=%d)\n", - vcpi->port, mst_state, avail_slots + vcpi->vcpi); + payload->port, mst_state, avail_slots + payload->vcpi); return -ENOSPC; } @@ -5296,7 +5296,7 @@ drm_dp_mst_atomic_check_vcpi_alloc_limit(struct drm_dp_mst_topology_mgr *mgr, int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm_dp_mst_topology_mgr *mgr) { struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; struct drm_connector *connector; struct drm_connector_state *conn_state; struct drm_crtc *crtc; @@ -5307,7 +5307,7 @@ int drm_dp_mst_add_affected_dsc_crtcs(struct drm_atomic_state *state, struct drm if (IS_ERR(mst_state)) return -EINVAL; - list_for_each_entry(pos, &mst_state->vcpis, next) { + list_for_each_entry(pos, &mst_state->payloads, next) { connector = pos->port->connector; @@ -5361,7 +5361,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, bool enable) { struct drm_dp_mst_topology_state *mst_state; - struct drm_dp_vcpi_allocation *pos; + struct drm_dp_mst_atomic_payload *pos; bool found = false; int vcpi = 0; @@ -5370,7 +5370,7 @@ int drm_dp_mst_atomic_enable_dsc(struct drm_atomic_state *state, if (IS_ERR(mst_state)) return PTR_ERR(mst_state); - list_for_each_entry(pos, &mst_state->vcpis, next) { + list_for_each_entry(pos, &mst_state->payloads, next) { if (pos->port == port) { found = true; break; @@ -5557,7 +5557,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr, mst_state->start_slot = 1; mst_state->mgr = mgr; - INIT_LIST_HEAD(&mst_state->vcpis); + INIT_LIST_HEAD(&mst_state->payloads); drm_atomic_private_obj_init(dev, &mgr->base, &mst_state->base, diff --git a/include/drm/display/drm_dp_mst_helper.h b/include/drm/display/drm_dp_mst_helper.h index 10adec068b7f..5671173f9f37 100644 --- a/include/drm/display/drm_dp_mst_helper.h +++ b/include/drm/display/drm_dp_mst_helper.h @@ -542,7 +542,7 @@ struct drm_dp_payload { #define to_dp_mst_topology_state(x) container_of(x, struct drm_dp_mst_topology_state, base) -struct drm_dp_vcpi_allocation { +struct drm_dp_mst_atomic_payload { struct drm_dp_mst_port *port; int vcpi; int pbn; @@ -552,7 +552,7 @@ struct drm_dp_vcpi_allocation { struct drm_dp_mst_topology_state { struct drm_private_state base; - struct list_head vcpis; + struct list_head payloads; struct drm_dp_mst_topology_mgr *mgr; u8 total_avail_slots; u8 start_slot;