Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756084AbbHYUgx (ORCPT ); Tue, 25 Aug 2015 16:36:53 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:52663 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751887AbbHYUgv (ORCPT ); Tue, 25 Aug 2015 16:36:51 -0400 From: Andy Gross To: linux-arm-msm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Bjorn Andersson , Andy Gross Subject: [PATCH] soc: qcom: smd: Use correct remote processor ID Date: Tue, 25 Aug 2015 15:36:35 -0500 Message-Id: <1440534995-12899-1-git-send-email-agross@codeaurora.org> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3849 Lines: 107 This patch fixes SMEM addressing issues when remote processors need to use secure SMEM partitions. Signed-off-by: Andy Gross --- .../devicetree/bindings/soc/qcom/qcom,smd.txt | 7 +++++++ drivers/soc/qcom/smd.c | 18 ++++++++++++++---- 2 files changed, 21 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt index f65c76d..3b60702 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.txt @@ -37,6 +37,12 @@ The edge is described by the following properties: Definition: the identifier of the remote processor in the smd channel allocation table +- qcom,remote-pid: + Usage: required + Value type: + Definition: the identifier for the remote processor as known by the rest + of the system. + = SMD DEVICES In turn, subnodes of the "edges" represent devices tied to SMD channels on that @@ -68,6 +74,7 @@ The following example represents a smd node, with one edge representing the interrupts = <0 168 1>; qcom,ipc = <&apcs 8 0>; qcom,smd-edge = <15>; + qcom,remote-pid = <0xffffffff>; rpm_requests { compatible = "qcom,rpm-msm8974"; diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c index 327adcf..bca8aba 100644 --- a/drivers/soc/qcom/smd.c +++ b/drivers/soc/qcom/smd.c @@ -111,6 +111,7 @@ struct qcom_smd_edge { struct qcom_smd *smd; struct device_node *of_node; unsigned edge_id; + unsigned remote_pid; int irq; @@ -572,7 +573,7 @@ static irqreturn_t qcom_smd_edge_intr(int irq, void *data) * have to scan if the amount of available space in smem have changed * since last scan. */ - available = qcom_smem_get_free_space(edge->edge_id); + available = qcom_smem_get_free_space(edge->remote_pid); if (available != edge->smem_available) { edge->smem_available = available; edge->need_rescan = true; @@ -976,7 +977,8 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed spin_lock_init(&channel->recv_lock); init_waitqueue_head(&channel->fblockread_event); - ret = qcom_smem_get(edge->edge_id, smem_info_item, (void **)&info, &info_size); + ret = qcom_smem_get(edge->remote_pid, smem_info_item, (void **)&info, + &info_size); if (ret) goto free_name_and_channel; @@ -997,7 +999,8 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed goto free_name_and_channel; } - ret = qcom_smem_get(edge->edge_id, smem_fifo_item, &fifo_base, &fifo_size); + ret = qcom_smem_get(edge->remote_pid, smem_fifo_item, &fifo_base, + &fifo_size); if (ret) goto free_name_and_channel; @@ -1041,7 +1044,7 @@ static void qcom_discover_channels(struct qcom_smd_edge *edge) int i; for (tbl = 0; tbl < SMD_ALLOC_TBL_COUNT; tbl++) { - ret = qcom_smem_get(edge->edge_id, + ret = qcom_smem_get(edge->remote_pid, smem_items[tbl].alloc_tbl_id, (void **)&alloc_tbl, NULL); @@ -1184,6 +1187,13 @@ static int qcom_smd_parse_edge(struct device *dev, return -EINVAL; } + key = "qcom,remote-pid"; + ret = of_property_read_u32(node, key, &edge->remote_pid); + if (ret) { + dev_err(dev, "edge missing %s property\n", key); + return -EINVAL; + } + syscon_np = of_parse_phandle(node, "qcom,ipc", 0); if (!syscon_np) { dev_err(dev, "no qcom,ipc node\n"); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/