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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=O8AQ7ej0ikQ65amEV9o8gcBkhCb1EY1FP1shGPZnluE=; b=GP2qrwXgnxjCFz68N14Iz3UJtxSHGietE26fM6LJRVy++Rr/BcDLYXtFqTtv2auGnq a1VapLpCBgPtRzaMGnBNMsPJ3I1HNrt82VG1Kzmt6UYS2a4dBUA1JdGkHFuJa5kNKW9+ 3SD5IyYPTMd5qGF8CAugtaNFPNR3PkowQHg/YNtQMrEiJTnU1AooZFfqqxqOEMcwxBUd WjbEblyGOptKOd0/I9aAblHspP4AmNVodsfMiQ7I6PwHrWa/m/I0VNps4O5TeItcakor qh+82TteMxR+Lim/gA2Y7zzD553OI6CEryeij4WfikwIyQI0JhF7VeLql2vekZIEU/Ef e/PA== X-Gm-Message-State: AOAM533YrR63IGykq7D3+ACQjvWbLk8W9lshylL7u/eGqWmDO1SQ5Ngf MbNDr2eN0caFQeBEOoQP7M4T8wnYgpuV X-Google-Smtp-Source: ABdhPJzYd4yzUs4s/dbBiPexbPY/mAOMAuQC9Ou4EpN65HOJGafhsgMH0K2WpP+bNPDuHLaSPs8tULOfD93H X-Received: from tzungbi-z840.tpe.corp.google.com ([2401:fa00:1:b:725a:fff:fe41:c6a5]) (user=tzungbi job=sendgmr) by 2002:a25:d92:: with SMTP id 140mr35243043ybn.101.1607922350995; Sun, 13 Dec 2020 21:05:50 -0800 (PST) Date: Mon, 14 Dec 2020 13:05:21 +0800 In-Reply-To: <20201214050521.845396-1-tzungbi@google.com> Message-Id: <20201214050521.845396-3-tzungbi@google.com> Mime-Version: 1.0 References: <20201214050521.845396-1-tzungbi@google.com> X-Mailer: git-send-email 2.29.2.684.gfbc64c5ab5-goog Subject: [PATCH 2/2] remoteproc/mediatek: support L1TCM From: Tzung-Bi Shih To: ohad@wizery.com, bjorn.andersson@linaro.org, robh+dt@kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201214_000554_567456_67317067 X-CRM114-Status: GOOD ( 16.61 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-remoteproc@vger.kernel.org, tzungbi@google.com, devicetree@vger.kernel.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org L1TCM is a high performance memory region in MT8192 SCP. Reads L1TCM memory region from DTS to determine if the machine supports. Loads L1TCM memory region to SCP sys if the firmware provides. Starts from MT8192 SCP, the firmware contains physical addresses for each memory region, for instance: Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align LOAD 0xXXXXXX 0xXXXXXXXX 0x10500000 0xXXXXX 0xXXXXX XXX 0xXXXX LOAD 0xXXXXXX 0xXXXXXXXX 0x10700000 0xXXXXX 0xXXXXX XXX 0xXXXX LOAD 0xXXXXXX 0xXXXXXXXX 0x50000000 0xXXXXX 0xXXXXX XXX 0xXXXX Kernel driver can use the "PhysAddr" (i.e. da in the da_to_va callbacks) to know the ELF segment belongs to which region. To backward compatible to MT8183 SCP, separates the da_to_va callbacks for new and legacy version. Signed-off-by: Tzung-Bi Shih Reviewed-by: Mathieu Poirier --- drivers/remoteproc/mtk_common.h | 5 +++ drivers/remoteproc/mtk_scp.c | 54 +++++++++++++++++++++++++++++++-- 2 files changed, 57 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 988edb4977c3..94bc54b224ee 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -75,6 +75,7 @@ struct mtk_scp_of_data { void (*scp_reset_assert)(struct mtk_scp *scp); void (*scp_reset_deassert)(struct mtk_scp *scp); void (*scp_stop)(struct mtk_scp *scp); + void *(*scp_da_to_va)(struct mtk_scp *scp, u64 da, size_t len); u32 host_to_scp_reg; u32 host_to_scp_int_bit; @@ -89,6 +90,10 @@ struct mtk_scp { void __iomem *reg_base; void __iomem *sram_base; size_t sram_size; + phys_addr_t sram_phys; + void __iomem *l1tcm_base; + size_t l1tcm_size; + phys_addr_t l1tcm_phys; const struct mtk_scp_of_data *data; diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index e0c235690361..f025aba67abc 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -458,9 +458,8 @@ static int scp_start(struct rproc *rproc) return ret; } -static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len) +static void *mt8183_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len) { - struct mtk_scp *scp = (struct mtk_scp *)rproc->priv; int offset; if (da < scp->sram_size) { @@ -476,6 +475,42 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len) return NULL; } +static void *mt8192_scp_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 *scp_da_to_va(struct rproc *rproc, u64 da, size_t len) +{ + struct mtk_scp *scp = (struct mtk_scp *)rproc->priv; + + return scp->data->scp_da_to_va(scp, da, len); +} + static void mt8183_scp_stop(struct mtk_scp *scp) { /* Disable SCP watchdog */ @@ -714,6 +749,19 @@ static int scp_probe(struct platform_device *pdev) goto free_rproc; } scp->sram_size = resource_size(res); + scp->sram_phys = res->start; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm"); + if (res) { + scp->l1tcm_base = devm_ioremap_resource(dev, res); + if (IS_ERR((__force void *)scp->l1tcm_base)) { + dev_err(dev, "Failed to parse and map l1tcm memory\n"); + ret = PTR_ERR((__force void *)scp->l1tcm_base); + goto free_rproc; + } + scp->l1tcm_size = resource_size(res); + scp->l1tcm_phys = res->start; + } mutex_init(&scp->send_lock); for (i = 0; i < SCP_IPI_MAX; i++) @@ -803,6 +851,7 @@ static const struct mtk_scp_of_data mt8183_of_data = { .scp_reset_assert = mt8183_scp_reset_assert, .scp_reset_deassert = mt8183_scp_reset_deassert, .scp_stop = mt8183_scp_stop, + .scp_da_to_va = mt8183_scp_da_to_va, .host_to_scp_reg = MT8183_HOST_TO_SCP, .host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT, .ipi_buf_offset = 0x7bdb0, @@ -814,6 +863,7 @@ static const struct mtk_scp_of_data mt8192_of_data = { .scp_reset_assert = mt8192_scp_reset_assert, .scp_reset_deassert = mt8192_scp_reset_deassert, .scp_stop = mt8192_scp_stop, + .scp_da_to_va = mt8192_scp_da_to_va, .host_to_scp_reg = MT8192_GIPC_IN_SET, .host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT, };