From patchwork Thu Jan 2 13:18:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 11315741 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 94CFC1398 for ; Thu, 2 Jan 2020 13:19:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 73B37215A4 for ; Thu, 2 Jan 2020 13:19:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="qNeVQ7cQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728381AbgABNTE (ORCPT ); Thu, 2 Jan 2020 08:19:04 -0500 Received: from lelv0142.ext.ti.com ([198.47.23.249]:36494 "EHLO lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728369AbgABNTE (ORCPT ); Thu, 2 Jan 2020 08:19:04 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 002DJ28Z020804; Thu, 2 Jan 2020 07:19:02 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1577971142; bh=ISRCmp1pNlWjfpjYRchA57+gaPN7NgeGPA5XLVjeSr0=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=qNeVQ7cQasZZaoSd+2LPqSOh1lEUTFBAJM7xleoIGIkNBHV1m6Q6TY6s5GttvYV2M DqrRnI0WhMCfpJKBCPOLuUXHIFyxH8BeW1oSrfFWEsAxi5qR/UEpt5ulYyhxPR+RZy gJWaufalv1S5P/XmNNZ51ASAo2BwDffvsZjDEAkk= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 002DJ2gF089881 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 2 Jan 2020 07:19:02 -0600 Received: from DFLE114.ent.ti.com (10.64.6.35) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Thu, 2 Jan 2020 07:19:02 -0600 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Thu, 2 Jan 2020 07:19:02 -0600 Received: from sokoban.bb.dnainternet.fi (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 002DIp3V075354; Thu, 2 Jan 2020 07:19:00 -0600 From: Tero Kristo To: , , CC: , , , , Tero Kristo Subject: [PATCHv4 04/14] remoteproc/omap: Add support to parse internal memories from DT Date: Thu, 2 Jan 2020 15:18:35 +0200 Message-ID: <20200102131845.12992-5-t-kristo@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200102131845.12992-1-t-kristo@ti.com> References: <20200102131845.12992-1-t-kristo@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Suman Anna The OMAP remoteproc driver has been enhanced to parse and store the kernel mappings for different internal RAM memories that may be present within each remote processor IP subsystem. Different devices have varying memories present on current SoCs. The current support handles the L2RAM for all IPU devices on OMAP4+ SoCs. The DSPs on OMAP4/OMAP5 only have Unicaches and do not have any L1 or L2 RAM memories. IPUs are expected to have the L2RAM at a fixed device address of 0x20000000, based on the current limitations on Attribute MMU configurations. NOTE: The current logic doesn't handle the parsing of memories for DRA7 remoteproc devices, and will be added alongside the DRA7 support. Signed-off-by: Suman Anna [t-kristo: converted to parse mem names / device addresses from pdata] Signed-off-by: Tero Kristo --- v4: - moved device data mem definitions under single struct drivers/remoteproc/omap_remoteproc.c | 89 ++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c index 557c439571c1..e429b2296d7a 100644 --- a/drivers/remoteproc/omap_remoteproc.c +++ b/drivers/remoteproc/omap_remoteproc.c @@ -39,11 +39,27 @@ struct omap_rproc_boot_data { unsigned int boot_reg; }; +/** + * struct omap_rproc_mem - internal memory structure + * @cpu_addr: MPU virtual address of the memory region + * @bus_addr: bus address used to access the memory region + * @dev_addr: device address of the memory region from DSP view + * @size: size of the memory region + */ +struct omap_rproc_mem { + void __iomem *cpu_addr; + phys_addr_t bus_addr; + u32 dev_addr; + size_t size; +}; + /** * struct omap_rproc - omap remote processor state * @mbox: mailbox channel handle * @client: mailbox client to request the mailbox channel * @boot_data: boot data structure for setting processor boot address + * @mem: internal memory regions data + * @num_mems: number of internal memory regions * @rproc: rproc handle * @reset: reset handle */ @@ -51,16 +67,30 @@ struct omap_rproc { struct mbox_chan *mbox; struct mbox_client client; struct omap_rproc_boot_data *boot_data; + struct omap_rproc_mem *mem; + int num_mems; struct rproc *rproc; struct reset_control *reset; }; +/** + * struct omap_rproc_mem_data - memory definitions for an omap remote processor + * @mem_name: name for this memory entry + * @dev_addr: device address for the memory entry + */ +struct omap_rproc_mem_data { + const char *name; + const u32 dev_addr; +}; + /** * struct omap_rproc_dev_data - device data for the omap remote processor * @device_name: device name of the remote processor + * @mems: memory definitions for this remote processor */ struct omap_rproc_dev_data { const char *device_name; + const struct omap_rproc_mem_data *mems; }; /** @@ -221,12 +251,18 @@ static const struct rproc_ops omap_rproc_ops = { .kick = omap_rproc_kick, }; +static const struct omap_rproc_mem_data ipu_mems[] = { + { .name = "l2ram", .dev_addr = 0x20000000 }, + { }, +}; + static const struct omap_rproc_dev_data omap4_dsp_dev_data = { .device_name = "dsp", }; static const struct omap_rproc_dev_data omap4_ipu_dev_data = { .device_name = "ipu", + .mems = ipu_mems, }; static const struct omap_rproc_dev_data omap5_dsp_dev_data = { @@ -235,6 +271,7 @@ static const struct omap_rproc_dev_data omap5_dsp_dev_data = { static const struct omap_rproc_dev_data omap5_ipu_dev_data = { .device_name = "ipu", + .mems = ipu_mems, }; static const struct of_device_id omap_rproc_of_match[] = { @@ -309,6 +346,54 @@ static int omap_rproc_get_boot_data(struct platform_device *pdev, return 0; } +static int omap_rproc_of_get_internal_memories(struct platform_device *pdev, + struct rproc *rproc) +{ + struct omap_rproc *oproc = rproc->priv; + struct device *dev = &pdev->dev; + const struct omap_rproc_dev_data *data; + struct resource *res; + int num_mems; + int i; + + data = of_device_get_match_data(&pdev->dev); + if (!data) + return -ENODEV; + + if (!data->mems) + return 0; + + for (num_mems = 0; data->mems[num_mems].name; num_mems++) + ; + + oproc->mem = devm_kcalloc(dev, num_mems, sizeof(*oproc->mem), + GFP_KERNEL); + if (!oproc->mem) + return -ENOMEM; + + for (i = 0; i < num_mems; i++) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + data->mems[i].name); + oproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res); + if (IS_ERR(oproc->mem[i].cpu_addr)) { + dev_err(dev, "failed to parse and map %s memory\n", + data->mems[i].name); + return PTR_ERR(oproc->mem[i].cpu_addr); + } + oproc->mem[i].bus_addr = res->start; + oproc->mem[i].dev_addr = data->mems[i].dev_addr; + oproc->mem[i].size = resource_size(res); + + dev_dbg(dev, "memory %8s: bus addr %pa size 0x%x va %p da 0x%x\n", + data->mems[i].name, &oproc->mem[i].bus_addr, + oproc->mem[i].size, oproc->mem[i].cpu_addr, + oproc->mem[i].dev_addr); + } + oproc->num_mems = num_mems; + + return 0; +} + static int omap_rproc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -348,6 +433,10 @@ static int omap_rproc_probe(struct platform_device *pdev) /* All existing OMAP IPU and DSP processors have an MMU */ rproc->has_iommu = true; + ret = omap_rproc_of_get_internal_memories(pdev, rproc); + if (ret) + goto free_rproc; + ret = omap_rproc_get_boot_data(pdev, rproc); if (ret) goto free_rproc;