From patchwork Wed Jun 1 11:21:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tinghan Shen X-Patchwork-Id: 12866759 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 72B64C4167D for ; Wed, 1 Jun 2022 11:22:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352610AbiFALW2 (ORCPT ); Wed, 1 Jun 2022 07:22:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351183AbiFALWR (ORCPT ); Wed, 1 Jun 2022 07:22:17 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3FB344A1F; Wed, 1 Jun 2022 04:22:15 -0700 (PDT) X-UUID: cb5b0e5a28b943048535779e141fec9a-20220601 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5,REQID:c040c581-da67-43b1-b366-2636112f04d4,OB:30,L OB:30,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Release_Ham,A CTION:release,TS:95 X-CID-INFO: VERSION:1.1.5,REQID:c040c581-da67-43b1-b366-2636112f04d4,OB:30,LOB :30,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Spam_GS981B3D,A CTION:quarantine,TS:95 X-CID-META: VersionHash:2a19b09,CLOUDID:aa648f14-f88c-475e-badf-d9ee54230b8f,C OID:63ea4881c016,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:0,BEC:nil X-UUID: cb5b0e5a28b943048535779e141fec9a-20220601 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 256895090; Wed, 01 Jun 2022 19:22:07 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Wed, 1 Jun 2022 19:22:05 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Wed, 1 Jun 2022 19:22:05 +0800 From: Tinghan Shen To: Bjorn Andersson , Mathieu Poirier , Rob Herring , Krzysztof Kozlowski , Matthias Brugger , Lee Jones , Benson Leung , Guenter Roeck , Daisuke Nojiri , Sebastian Reichel , "Dustin L. Howett" , Tzung-Bi Shih , Tinghan Shen , "Gustavo A. R. Silva" , Prashant Malani , Enric Balletbo i Serra , Brian Norris CC: , , , , , , , Subject: [PATCH v1 10/15] remoteproc: mediatek: Add chip dependent operations for SCP core 1 Date: Wed, 1 Jun 2022 19:21:56 +0800 Message-ID: <20220601112201.15510-11-tinghan.shen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220601112201.15510-1-tinghan.shen@mediatek.com> References: <20220601112201.15510-1-tinghan.shen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org The SCP rproc operations has chip dependent callbacks. Implement a version of these callbacks for MT8195 SCP core 1. Signed-off-by: Tinghan Shen --- drivers/remoteproc/mtk_common.h | 1 + drivers/remoteproc/mtk_scp.c | 3 +- drivers/remoteproc/mtk_scp_dual.c | 121 +++++++++++++++++++++++++++++- 3 files changed, 123 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 04f7ee590f96..7b363411ec99 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -171,4 +171,5 @@ int scp_parse_fw(struct rproc *rproc, const struct firmware *fw); int scp_map_memory_region(struct mtk_scp *scp); void scp_unmap_memory_region(struct mtk_scp *scp); irqreturn_t scp_irq_handler(int irq, void *priv); +void scp_ipi_handler(struct mtk_scp *scp); #endif diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index c67883c28a43..55bc4e9d1a6f 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -84,7 +84,7 @@ static void scp_init_ipi_handler(void *data, unsigned int len, void *priv) wake_up_interruptible(&scp->run.wq); } -static void scp_ipi_handler(struct mtk_scp *scp) +void scp_ipi_handler(struct mtk_scp *scp) { struct mtk_share_obj __iomem *rcv_obj = scp->recv_buf; struct scp_ipi_desc *ipi_desc = scp->ipi_desc; @@ -118,6 +118,7 @@ static void scp_ipi_handler(struct mtk_scp *scp) scp->ipi_id_ack[id] = true; wake_up(&scp->ack_wq); } +EXPORT_SYMBOL_GPL(scp_ipi_handler); static int scp_elf_read_ipi_buf_addr(struct mtk_scp *scp, const struct firmware *fw, diff --git a/drivers/remoteproc/mtk_scp_dual.c b/drivers/remoteproc/mtk_scp_dual.c index d4cc15e22640..16cf9d2628c8 100644 --- a/drivers/remoteproc/mtk_scp_dual.c +++ b/drivers/remoteproc/mtk_scp_dual.c @@ -12,6 +12,124 @@ #include "mtk_common.h" #include "remoteproc_internal.h" +static void mt8195_power_on_sram(void __iomem *addr) +{ + int i; + + for (i = 31; i >= 0; i--) + writel(GENMASK(i, 0), addr); + writel(0, addr); +} + +static void mt8195_power_off_sram(void __iomem *addr) +{ + int i; + + writel(0, addr); + for (i = 0; i < 32; i++) + writel(GENMASK(i, 0), addr); +} + +static int mt8195_scp_dual_before_load(struct mtk_scp *scp) +{ + u32 sec_ctrl; + + mt8195_power_on_sram(scp->reg_base + MT8195_CPU1_SRAM_PD); + + /* hold SCP in reset while loading FW. */ + scp->data->scp_reset_assert(scp); + + /* enable MPU for all memory regions */ + writel(0xff, scp->reg_base + MT8195_CORE1_MEM_ATT_PREDEF); + + return 0; +} + +static void mt8195_scp_dual_irq_handler(struct mtk_scp *scp) +{ + u32 scp_to_host; + + scp_to_host = readl(scp->reg_base + MT8195_SSHUB2APMCU_IPC_SET); + + if (scp_to_host & MT8192_SCP_IPC_INT_BIT) { + scp_ipi_handler(scp); + + /* + * SCP won't send another interrupt until we clear + * MT8195_SSHUB2APMCU_IPC_CLR. + */ + writel(MT8192_SCP_IPC_INT_BIT, + scp->reg_base + MT8195_SSHUB2APMCU_IPC_CLR); + } +} + +static void mt8195_scp_dual_reset_assert(struct mtk_scp *scp) +{ + writel(1, scp->reg_base + MT8195_CORE1_SW_RSTN_SET); +} + +static void mt8195_scp_dual_reset_deassert(struct mtk_scp *scp) +{ + writel(1, scp->reg_base + MT8195_CORE1_SW_RSTN_CLR); +} + +static void *mt8195_scp_dual_da_to_va(struct mtk_scp *scp, u64 da, size_t len) +{ + int offset; + + if (da >= scp->sram_phys && + (da + len) <= scp->sram_phys + scp->sram_size) { + offset = da - scp->sram_phys; + return (void __force *)scp->sram_base + offset; + } + + /* optional memory region */ + if (scp->l1tcm_size && + da >= scp->l1tcm_phys && + (da + len) <= scp->l1tcm_phys + scp->l1tcm_size) { + offset = da - scp->l1tcm_phys; + return (void __force *)scp->l1tcm_base + offset; + } + + /* optional memory region */ + if (scp->dram_size && + da >= scp->dma_addr && + (da + len) <= scp->dma_addr + scp->dram_size) { + offset = da - scp->dma_addr; + return scp->cpu_addr + offset; + } + + return NULL; +} + +static void mt8195_scp_dual_stop(struct mtk_scp *scp) +{ + /* Power off CPU SRAM */ + mt8195_power_off_sram(scp->reg_base + MT8195_CPU1_SRAM_PD); + + /* Disable SCP watchdog */ + writel(0, scp->reg_base + MT8195_CORE1_WDT_CFG); +} + +static int mt8195_scp_dual_clk_get(struct mtk_scp *scp) +{ + scp->clk = NULL; + + return 0; +} + +static const struct mtk_scp_of_data mt8195_scp_dual_of_data = { + .scp_clk_get = mt8195_scp_dual_clk_get, + .scp_before_load = mt8195_scp_dual_before_load, + .scp_irq_handler = mt8195_scp_dual_irq_handler, + .scp_reset_assert = mt8195_scp_dual_reset_assert, + .scp_reset_deassert = mt8195_scp_dual_reset_deassert, + .scp_stop = mt8195_scp_dual_stop, + .scp_da_to_va = mt8195_scp_dual_da_to_va, + .host_to_scp_reg = MT8192_GIPC_IN_SET, + .host_to_scp_int_bit = MT8195_HOST_IPC_INT_BIT, +}; + static const struct rproc_ops scp_ops = { .start = scp_start, .stop = scp_stop, @@ -53,6 +171,7 @@ static int scp_dual_probe(struct platform_device *pdev) scp = (struct mtk_scp *)rproc->priv; scp->rproc = rproc; scp->dev = dev; + scp->data = of_device_get_match_data(dev); platform_set_drvdata(pdev, scp); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram"); @@ -125,7 +244,7 @@ static int scp_dual_remove(struct platform_device *pdev) } static const struct of_device_id mtk_scp_dual_of_match[] = { - { .compatible = "mediatek,mt8195-scp-dual" }, + { .compatible = "mediatek,mt8195-scp-dual", .data = &mt8195_scp_dual_of_data }, {}, }; MODULE_DEVICE_TABLE(of, mtk_scp_dual_of_match);