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Thu, 23 Aug 2018 10:09:53 +0000 Date: Thu, 23 Aug 2018 18:07:00 +0800 From: Jisheng Zhang To: Adrian Hunter , Ulf Hansson Cc: , , Subject: [PATCH v4 1/3] mmc: sdhci: add adma_table_cnt member to struct sdhci_host Message-ID: <20180823180700.3432c4db@xhacker.debian> In-Reply-To: <20180823180549.78e508db@xhacker.debian> References: <20180823180549.78e508db@xhacker.debian> X-Mailer: Claws Mail 3.17.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-Originating-IP: [124.74.246.114] X-ClientProxiedBy: TYAPR01CA0067.jpnprd01.prod.outlook.com (2603:1096:404:2b::31) To CY1PR0301MB1579.namprd03.prod.outlook.com (2a01:111:e400:529c::17) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 71ac459e-c399-4fc1-9af9-08d608e092fa X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:(7020095)(4652040)(8989137)(5600074)(711020)(4534165)(4627221)(201703031133081)(201702281549075)(8990107)(2017052603328)(7153060)(7193020);SRVR:CY1PR0301MB1579; X-Microsoft-Exchange-Diagnostics: 1;CY1PR0301MB1579;3:p9xsUimXJDeEgOzpcYBM/UAWDso3YHMAV6nJxUM1j2eczos+Q91j6BMQRdq56gn1gKYpYHVRu3AdJwWJGL74b16GgvNxY11SS4e/cv1B3Nh0hDubpGdlc7QlTQYS8y/lxhtuJXFbe7Tt+XO127E8pXRKYZV85p5Wh972amP8VWDNjE0xaORcJiGklbr8YMJ+Cg6qopsDuagTn3haU6Juxe17N+AwSJ/oc86CDZ6KT+ssIi6zn1zT4ZeJNnytNlVh;25:dpaaLr0TsiZjSAHNpIu+tZww0ovs6NURUEctMQbRYNJadmy6aI/pOHqMlq3Xt4xaLJTqrXYKENbluIlTZNsX74pH06VtDLF6kEkgH3RGkf5fi1Na4gWpNT6IP+bC+DgkUyTfvxCwNhIiDRrCHmES35wTi1yxIKOG61OumkqU9NajKunAk8lcuaw5mSOvnlX8Q+a2SFWZLDqGN+aeaRujlyWZFOFyUGthbbBBk9H2XGbTvQBypC+yTMxIqtz7s+bW5zzRUcZSYETBHM/OhXl9zLtfNQr5MI0moH6CeNq/ICzMMXKVU0hn7VO62VKVqkf1nJt/KoERGNdZ+B/4EveQBA==;31:KHGp2l/ZVyukdlhylGUfautZwopcR2YRlEp4EzHluxP0hG/P5eRtBF1oP7NN9R0h+8A5SPi0H9Fd0PfytHXaJdz/wLSPjF7Izcw+6y4YKxu5hcsr0YkWeyJxQUnHqbhEEDO9SOtla4x/+E23TWBKl5CKm9sUEzcH8M+m62U6Zq06UTVubsjlAbBbVr2kvK5FP/vEp3eY9vmdEOuWRiO30kV0YlYkaSaZzFMNryJhOJU= X-MS-TrafficTypeDiagnostic: CY1PR0301MB1579: X-Microsoft-Exchange-Diagnostics: 1;CY1PR0301MB1579;20: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;4:Nue+9A5YGAh3w+7x4bY4eeL4jxirf6KCUmLyexZQq7vUMaNoc80KLf8+mmd9xERoTmKXI/9daQ0KyPSPlKjLLh7oeGYtDRw/UmxUagSkSW62Drch5FrR462Cb9zzwmpaGq8L3DvimkcUa87CVM61sRpRUB0Csug/xBxC/b5ipvWXLMelcisQyqVkLvLvwwirUIAlRDY7M4Xe54VwLzBfXVbzZCcOOVh98V+K3/XtIJ+NQ5SW2N3MifBWAN6zpYAT+C7NFzUwj3ufklh5dtFdEA== X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; 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Default value of adma_table_cnt is set to (SDHCI_MAX_SEGS * 2 + 1). Signed-off-by: Jisheng Zhang Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 17 +++++++++-------- drivers/mmc/host/sdhci.h | 3 +++ 2 files changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 1b3fbd9bd5c5..52ccf4644384 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3322,6 +3322,13 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev, host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG; + /* + * The DMA table descriptor count is calculated as the maximum + * number of segments times 2, to allow for an alignment + * descriptor for each segment, plus 1 for a nop end descriptor. + */ + host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1; + return host; } @@ -3567,18 +3574,12 @@ int sdhci_setup_host(struct sdhci_host *host) dma_addr_t dma; void *buf; - /* - * The DMA descriptor table size is calculated as the maximum - * number of segments times 2, to allow for an alignment - * descriptor for each segment, plus 1 for a nop end descriptor, - * all multipled by the descriptor size. - */ if (host->flags & SDHCI_USE_64_BIT_DMA) { - host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) * + host->adma_table_sz = host->adma_table_cnt * SDHCI_ADMA2_64_DESC_SZ; host->desc_sz = SDHCI_ADMA2_64_DESC_SZ; } else { - host->adma_table_sz = (SDHCI_MAX_SEGS * 2 + 1) * + host->adma_table_sz = host->adma_table_cnt * SDHCI_ADMA2_32_DESC_SZ; host->desc_sz = SDHCI_ADMA2_32_DESC_SZ; } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index f0bd36ce3817..25bddd21de31 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -563,6 +563,9 @@ struct sdhci_host { /* Host SDMA buffer boundary. */ u32 sdma_boundary; + /* Host ADMA table count */ + u32 adma_table_cnt; + u64 data_timeout; unsigned long private[0] ____cacheline_aligned; From patchwork Thu Aug 23 10:08:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 10573687 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F0FB112E for ; Thu, 23 Aug 2018 10:11:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0234E2B956 for ; 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We also let the original sdhci_adma_write_desc() accept &desc so that the function can set its new value. Then export the function so that it could be reused by driver's specific implementations. Signed-off-by: Jisheng Zhang Acked-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 37 +++++++++++++++++++++++-------------- drivers/mmc/host/sdhci.h | 4 ++++ 2 files changed, 27 insertions(+), 14 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 52ccf4644384..eb21d2db7f05 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -554,10 +554,10 @@ static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) local_irq_restore(*flags); } -static void sdhci_adma_write_desc(struct sdhci_host *host, void *desc, - dma_addr_t addr, int len, unsigned cmd) +void sdhci_adma_write_desc(struct sdhci_host *host, void **desc, + dma_addr_t addr, int len, unsigned int cmd) { - struct sdhci_adma2_64_desc *dma_desc = desc; + struct sdhci_adma2_64_desc *dma_desc = *desc; /* 32-bit and 64-bit descriptors have these members in same position */ dma_desc->cmd = cpu_to_le16(cmd); @@ -566,6 +566,19 @@ static void sdhci_adma_write_desc(struct sdhci_host *host, void *desc, if (host->flags & SDHCI_USE_64_BIT_DMA) dma_desc->addr_hi = cpu_to_le32((u64)addr >> 32); + + *desc += host->desc_sz; +} +EXPORT_SYMBOL_GPL(sdhci_adma_write_desc); + +static inline void __sdhci_adma_write_desc(struct sdhci_host *host, + void **desc, dma_addr_t addr, + int len, unsigned int cmd) +{ + if (host->ops->adma_write_desc) + host->ops->adma_write_desc(host, desc, addr, len, cmd); + + sdhci_adma_write_desc(host, desc, addr, len, cmd); } static void sdhci_adma_mark_end(void *desc) @@ -618,28 +631,24 @@ static void sdhci_adma_table_pre(struct sdhci_host *host, } /* tran, valid */ - sdhci_adma_write_desc(host, desc, align_addr, offset, - ADMA2_TRAN_VALID); + __sdhci_adma_write_desc(host, &desc, align_addr, + offset, ADMA2_TRAN_VALID); BUG_ON(offset > 65536); align += SDHCI_ADMA2_ALIGN; align_addr += SDHCI_ADMA2_ALIGN; - desc += host->desc_sz; - addr += offset; len -= offset; } BUG_ON(len > 65536); - if (len) { - /* tran, valid */ - sdhci_adma_write_desc(host, desc, addr, len, - ADMA2_TRAN_VALID); - desc += host->desc_sz; - } + /* tran, valid */ + if (len) + __sdhci_adma_write_desc(host, &desc, addr, len, + ADMA2_TRAN_VALID); /* * If this triggers then we have a calculation bug @@ -656,7 +665,7 @@ static void sdhci_adma_table_pre(struct sdhci_host *host, } } else { /* Add a terminating entry - nop, end, valid */ - sdhci_adma_write_desc(host, desc, 0, 0, ADMA2_NOP_END_VALID); + __sdhci_adma_write_desc(host, &desc, 0, 0, ADMA2_NOP_END_VALID); } } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 25bddd21de31..2115416f973a 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -606,6 +606,8 @@ struct sdhci_ops { void (*adma_workaround)(struct sdhci_host *host, u32 intmask); void (*card_event)(struct sdhci_host *host); void (*voltage_switch)(struct sdhci_host *host); + void (*adma_write_desc)(struct sdhci_host *host, void **desc, + dma_addr_t addr, int len, unsigned int cmd); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS @@ -736,6 +738,8 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios); void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable); +void sdhci_adma_write_desc(struct sdhci_host *host, void **desc, + dma_addr_t addr, int len, unsigned int cmd); #ifdef CONFIG_PM int sdhci_suspend_host(struct sdhci_host *host); From patchwork Thu Aug 23 10:09:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 10573693 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D6D9017DF for ; Thu, 23 Aug 2018 10:12:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BAA4C2B963 for ; Thu, 23 Aug 2018 10:12:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AEB522B966; Thu, 23 Aug 2018 10:12:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 43E2B2B963 for ; 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Signed-off-by: Jisheng Zhang --- drivers/mmc/host/sdhci-of-dwcmshc.c | 39 +++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c index 1b7cd144fb01..df0a3aeabe19 100644 --- a/drivers/mmc/host/sdhci-of-dwcmshc.c +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c @@ -8,21 +8,48 @@ */ #include +#include #include #include +#include #include "sdhci-pltfm.h" +#define BOUNDARY_OK(addr, len) \ + ((addr | (SZ_128M - 1)) == ((addr + len - 1) | (SZ_128M - 1))) + struct dwcmshc_priv { struct clk *bus_clk; }; +/* + * If DMA addr spans 128MB boundary, we split the DMA transfer into two + * so that the DMA transfer doesn't exceed the boundary. + */ +static void dwcmshc_adma_write_desc(struct sdhci_host *host, void **desc, + dma_addr_t addr, int len, unsigned int cmd) +{ + int tmplen, offset; + + if (likely(!len || BOUNDARY_OK(addr, len))) + sdhci_adma_write_desc(host, desc, addr, len, cmd); + + offset = addr & (SZ_128M - 1); + tmplen = SZ_128M - offset; + sdhci_adma_write_desc(host, desc, addr, tmplen, cmd); + + addr += tmplen; + len -= tmplen; + sdhci_adma_write_desc(host, desc, addr, len, cmd); +} + static const struct sdhci_ops sdhci_dwcmshc_ops = { .set_clock = sdhci_set_clock, .set_bus_width = sdhci_set_bus_width, .set_uhs_signaling = sdhci_set_uhs_signaling, .get_max_clock = sdhci_pltfm_clk_get_max_clock, .reset = sdhci_reset, + .adma_write_desc = dwcmshc_adma_write_desc, }; static const struct sdhci_pltfm_data sdhci_dwcmshc_pdata = { @@ -36,12 +63,24 @@ static int dwcmshc_probe(struct platform_device *pdev) struct sdhci_host *host; struct dwcmshc_priv *priv; int err; + u32 extra; host = sdhci_pltfm_init(pdev, &sdhci_dwcmshc_pdata, sizeof(struct dwcmshc_priv)); if (IS_ERR(host)) return PTR_ERR(host); + /* + * The DMA table descriptor count is calculated as the maximum + * number of segments times 2, to allow for an alignment + * descriptor for each segment, plus 1 for a nop end descriptor, + * plus extra number for cross 128M boundary handling. + */ + extra = DIV_ROUND_UP(totalram_pages, SZ_128M / PAGE_SIZE); + if (extra > SDHCI_MAX_SEGS) + extra = SDHCI_MAX_SEGS; + host->adma_table_cnt = SDHCI_MAX_SEGS * 2 + 1 + extra; + pltfm_host = sdhci_priv(host); priv = sdhci_pltfm_priv(pltfm_host);