From mboxrd@z Thu Jan 1 00:00:00 1970 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 BC56AC4332F for ; Fri, 18 Nov 2022 01:20:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235143AbiKRBUg (ORCPT ); Thu, 17 Nov 2022 20:20:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231194AbiKRBUe (ORCPT ); Thu, 17 Nov 2022 20:20:34 -0500 Received: from mail-yw1-x112f.google.com (mail-yw1-x112f.google.com [IPv6:2607:f8b0:4864:20::112f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDB22B97; Thu, 17 Nov 2022 17:20:32 -0800 (PST) Received: by mail-yw1-x112f.google.com with SMTP id 00721157ae682-381662c78a9so36119727b3.7; Thu, 17 Nov 2022 17:20:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=pe2vAdZw2zbScUXaV5jG+T84gYnVLrtUX8rEdevNiXc=; b=ds6SEnDdltKSeMD3fGpyuHSpMc50M+DE4ipDkD8+bVb/t+jql+Sx3pduLN1B9wru4U E7d4R4pXckWoW/79nhgk0Hzt7L3Zrf7JJ0mHd5EniiyV/TFBj4F7NxqDCnkFIYWLEEX3 YLjV93ck4Z8xkUDcaQwy9nrwpsBGlxqF+XwDBfQD4OLwFYD5/o+EkGMEAzU/5SvNtMd4 Pf7MYCqyuk62OWPD36jDaqWPGvprDA4F/WuLXUSCozXjxC+frZIqbzYMgiWSL/vbQjs4 DZWMQrm/HPmMLSh3Hxkofw/6P+bmXkVGIOxEiiULoSGaiWXXYEfqNwU+oOpPIE6G6Jsz V2kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pe2vAdZw2zbScUXaV5jG+T84gYnVLrtUX8rEdevNiXc=; b=MPMpPNbOSaOM8a7YnIMS5AgyhYuutRf0JaPUVfYYSCBMsFL247GDLWlytcW9gME7YD LeBEeymPuzhCx19eHkqufYqdkWyYATQgShKhf9XbbGwrIg+DG5PZroq5QLmevyZ6f8fQ J637tEyy7YnVS615i5UVnj+hc1TKbmiHyAiWg7arVgRIR/iH60gbPxbUlcv+mJE696qm QDBMCgRFdZnTFwyJhiXiVOyYsMdbWTukGZnVMYSjsASs7tnns1x1+xviiWdPnKRv3/Mr sELZiT/i+SI382D1HdiuPvrAvw9rQGRrJXZYLzrHUaaMcqZM3Nu3g+woqLHti0loGcA6 XqYg== X-Gm-Message-State: ANoB5pnUPJbm56yohPE0pwG+YKnm/USDeF8XjsuHuGTJIm2m8hyJk29S RK4d+apuH5pq99Snjo4fkdTheMRJpKVX0XM3LQY= X-Google-Smtp-Source: AA0mqf7bf8p9nYEM/wxYeqRuinsVv8jcbwkTVM4UhmT+lsKNLE/n48ESaXyMeLEZgAPinPp/xCfL+N8vJs1pQ5j8eoI= X-Received: by 2002:a81:9988:0:b0:370:5fad:6c01 with SMTP id q130-20020a819988000000b003705fad6c01mr4463764ywg.327.1668734431732; Thu, 17 Nov 2022 17:20:31 -0800 (PST) MIME-Version: 1.0 References: <20221019110647.11076-1-victor.shih@genesyslogic.com.tw> <20221019110647.11076-6-victor.shih@genesyslogic.com.tw> <3a877d5c-2e05-fb57-cb46-9664d32a763f@intel.com> In-Reply-To: <3a877d5c-2e05-fb57-cb46-9664d32a763f@intel.com> From: Ben Chuang Date: Fri, 18 Nov 2022 09:19:53 +0800 Message-ID: Subject: Re: [PATCH V5 05/26] mmc: core: Add definitions for SD UHS-II cards To: Adrian Hunter Cc: Victor Shih , ulf.hansson@linaro.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, HL.Liu@genesyslogic.com.tw, Greg.tu@genesyslogic.com.tw, takahiro.akashi@linaro.org, dlunev@chromium.org, Victor Shih , Jason Lai Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 18, 2022 at 12:05 AM Adrian Hunter wrote: > > On 17/11/22 08:19, Ben Chuang wrote: > > Hi, > > > > On Wed, Nov 16, 2022 at 9:48 PM Adrian Hunter wrote: > >> > >> On 16/11/22 13:06, Victor Shih wrote: > >>> Hi, Adrian > >>> > >>> On Wed, Nov 2, 2022 at 1:12 AM Adrian Hunter wrote: > >>>> > >>>> On 19/10/22 14:06, Victor Shih wrote: > >>>>> Add UHS-II specific data structures for commands and defines for > >>>>> registers, as described in Part 1 UHS-II Addendum Version 1.01. > >>>>> > >>>>> UHS-II related definitions are listed below: > >>>>> 1. UHS-II card capability: sd_uhs2_caps{} > >>>>> 2. UHS-II configuration: sd_uhs2_config{} > >>>>> 3. UHS-II Command structure: uhs2_command{} > >>>>> 4. UHS-II register I/O address and register field definitions: sd_uhs2.h > >>>>> > >>>>> Signed-off-by: Ulf Hansson > >>>>> Signed-off-by: Jason Lai > >>>>> Signed-off-by: Victor Shih > >>>>> --- > >>>>> > >>>>> Updates in V5: > >>>>> - Added UHS2 interfaces in mmc_host_ops: host.h > >>>>> - Added UHS2 VDD2 power supply in mmc_supply: host.h > >>>>> - Added UHS2-specific OCR and UHS2 VDD2 max current in mmc_host: host.h > >>>>> - Added definition of UHS2 VDD2 1.65v-1.95v in mmc_host: host.h > >>>>> - Added flags/MMC_UHS2_SUPPORT/MMC_UHS2_2L_HD in mmc_host: host.h > >>>>> --- > >>>>> include/linux/mmc/card.h | 42 +++++- > >>>>> include/linux/mmc/core.h | 13 ++ > >>>>> include/linux/mmc/host.h | 70 +++++++++- > >>>>> include/linux/mmc/sd_uhs2.h | 263 ++++++++++++++++++++++++++++++++++++ > >>>>> 4 files changed, 386 insertions(+), 2 deletions(-) > >>>>> create mode 100644 include/linux/mmc/sd_uhs2.h > >>>>> > >>>>> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h > >>>>> index 4a42f31b7bb0..d638a2c689cf 100644 > >>>>> --- a/include/linux/mmc/card.h > >>>>> +++ b/include/linux/mmc/card.h > >>>>> @@ -190,6 +190,13 @@ struct sd_switch_caps { > >>>>> #define SD_MAX_CURRENT_400 (1 << SD_SET_CURRENT_LIMIT_400) > >>>>> #define SD_MAX_CURRENT_600 (1 << SD_SET_CURRENT_LIMIT_600) > >>>>> #define SD_MAX_CURRENT_800 (1 << SD_SET_CURRENT_LIMIT_800) > >>>>> + unsigned int sd4_curr_limit; > >>>>> +#define SD4_SET_POWER_LIMIT_0_72W 0 > >>>>> +#define SD4_SET_POWER_LIMIT_1_44W 1 > >>>>> +#define SD4_SET_POWER_LIMIT_2_16W 2 > >>>>> +#define SD4_SET_POWER_LIMIT_2_88W 3 > >>>>> +#define SD4_SET_POWER_LIMIT_1_80W 4 > >>>>> +#define SD4_SET_POWER_NO_CHANGE (-1) > >>>>> }; > >>>>> > >>>>> struct sd_ext_reg { > >>>>> @@ -213,7 +220,35 @@ struct sd_ext_reg { > >>>>> > >>>>> struct sd_uhs2_config { > >>>>> u32 node_id; > >>>>> - /* TODO: Extend with more register configs. */ > >>>>> + > >>>>> + u32 dap; > >>>>> + u32 gap; > >>>>> + u32 n_fcu; > >>>>> + u32 maxblk_len; > >>>>> + u8 n_lanes; > >>>>> + u8 dadr_len; > >>>>> + u8 app_type; > >>>>> + u8 phy_minor_rev; > >>>>> + u8 phy_major_rev; > >>>>> + u8 can_hibernate; > >>>>> + u8 n_lss_sync; > >>>>> + u8 n_lss_dir; > >>>>> + u8 link_minor_rev; > >>>>> + u8 link_major_rev; > >>>>> + u8 dev_type; > >>>>> + u8 n_data_gap; > >>>>> + > >>>>> + u32 n_fcu_set; > >>>>> + u32 maxblk_len_set; > >>>>> + u8 n_lanes_set; > >>>>> + u8 speed_range_set; > >>>>> + u8 n_lss_sync_set; > >>>>> + u8 n_lss_dir_set; > >>>>> + u8 n_data_gap_set; > >>>>> + u8 pwrctrl_mode_set; > >>>>> + u8 max_retry_set; > >>>>> + > >>>>> + u8 cfg_complete; > >>>>> }; > >>>>> > >>>>> struct sdio_cccr { > >>>>> @@ -323,6 +358,9 @@ struct mmc_card { > >>>>> struct sd_ext_reg ext_perf; /* SD extension reg for PERF */ > >>>>> > >>>>> struct sd_uhs2_config uhs2_config; /* SD UHS-II config */ > >>>>> + u8 uhs2_state; /* SD UHS-II states */ > >>>>> +#define MMC_UHS2_INITIALIZED BIT(1) > >>>>> +#define MMC_UHS2_SPEED_B BIT(2) > >>>>> > >>>>> unsigned int sdio_funcs; /* number of SDIO functions */ > >>>>> atomic_t sdio_funcs_probed; /* number of probed SDIO funcs */ > >>>>> @@ -364,4 +402,6 @@ bool mmc_card_is_blockaddr(struct mmc_card *card); > >>>>> #define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO) > >>>>> #define mmc_card_sd_combo(c) ((c)->type == MMC_TYPE_SD_COMBO) > >>>>> > >>>>> +#define mmc_card_can_poweroff_notify(c) ((c)->ext_power.feature_support & SD_EXT_POWER_OFF_NOTIFY) > >>>>> + > >>>>> #endif /* LINUX_MMC_CARD_H */ > >>>>> diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h > >>>>> index 6efec0b9820c..2a0581d87706 100644 > >>>>> --- a/include/linux/mmc/core.h > >>>>> +++ b/include/linux/mmc/core.h > >>>>> @@ -23,6 +23,14 @@ enum mmc_blk_status { > >>>>> MMC_BLK_NEW_REQUEST, > >>>>> }; > >>>>> > >>>>> +struct uhs2_command { > >>>>> + u16 header; > >>>>> + u16 arg; > >>>>> + __be32 *payload; > >>>>> + u32 payload_len; > >>>>> + u32 packet_len; > >>>>> +}; > >>>>> + > >>>>> struct mmc_command { > >>>>> u32 opcode; > >>>>> u32 arg; > >>>>> @@ -109,6 +117,11 @@ struct mmc_command { > >>>>> unsigned int busy_timeout; /* busy detect timeout in ms */ > >>>>> struct mmc_data *data; /* data segment associated with cmd */ > >>>>> struct mmc_request *mrq; /* associated request */ > >>>>> + > >>>>> + struct uhs2_command *uhs2_cmd; /* UHS2 command */ > >>>>> + u8 *uhs2_resp; /* UHS2 native cmd resp */ > >>>>> + u8 uhs2_resp_len; /* UHS2 native cmd resp len */ > >>>>> + u8 uhs2_tmode0_flag; /* UHS2 transfer mode flag */ > >>>>> }; > >>>>> > >>>>> struct mmc_data { > >>>>> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h > >>>>> index 895bcf7f80b7..249a9414ad10 100644 > >>>>> --- a/include/linux/mmc/host.h > >>>>> +++ b/include/linux/mmc/host.h > >>>>> @@ -16,6 +16,7 @@ > >>>>> #include > >>>>> #include > >>>>> #include > >>>>> +#include > >>>>> > >>>>> struct mmc_ios { > >>>>> unsigned int clock; /* clock rate */ > >>>>> @@ -96,7 +97,48 @@ struct mmc_clk_phase_map { > >>>>> }; > >>>>> > >>>>> struct sd_uhs2_caps { > >>>>> - /* TODO: Add UHS-II capabilities for the host. */ > >>>>> + u32 dap; > >>>>> + u32 gap; > >>>>> + u32 group_desc; > >>>>> + u32 maxblk_len; > >>>>> + u32 n_fcu; > >>>>> + u8 n_lanes; > >>>>> + u8 addr64; > >>>>> + u8 card_type; > >>>>> + u8 phy_rev; > >>>>> + u8 speed_range; > >>>>> + u8 can_hibernate; > >>>>> + u8 n_lss_sync; > >>>>> + u8 n_lss_dir; > >>>>> + u8 link_rev; > >>>>> + u8 host_type; > >>>>> + u8 n_data_gap; > >>>>> + > >>>>> + u32 maxblk_len_set; > >>>>> + u32 n_fcu_set; > >>>>> + u8 n_lanes_set; > >>>>> + u8 n_lss_sync_set; > >>>>> + u8 n_lss_dir_set; > >>>>> + u8 n_data_gap_set; > >>>>> + u8 max_retry_set; > >>>>> +}; > >>>>> + > >>>>> +struct sd_uhs2_ios { > >>>>> + bool is_2L_HD_mode; > >>>>> + bool is_APP_CMD; > >>>>> + unsigned int power_delay_ms; /* waiting for stable power */ > >>>>> +}; > >>>>> + > >>>>> +enum sd_uhs2_operation { > >>>>> + UHS2_PHY_INIT = 0, > >>>>> + UHS2_SET_CONFIG, > >>>>> + UHS2_ENABLE_INT, > >>>>> + UHS2_DISABLE_INT, > >>>>> + UHS2_ENABLE_CLK, > >>>>> + UHS2_DISABLE_CLK, > >>>>> + UHS2_CHECK_DORMANT, > >>>>> + UHS2_SET_SPEED_B, > >>>>> + UHS2_POST_ATTACH_SD, > >>>>> }; > >>>>> > >>>>> struct mmc_host; > >>>>> @@ -231,6 +273,20 @@ struct mmc_host_ops { > >>>>> > >>>>> /* Initialize an SD express card, mandatory for MMC_CAP2_SD_EXP. */ > >>>>> int (*init_sd_express)(struct mmc_host *host, struct mmc_ios *ios); > >>>>> + > >>>>> + /* UHS2 interfaces */ > >>>>> + int (*uhs2_detect_init)(struct mmc_host *host); > >>>> > >>>> Never called? > >>> > >>> Yes, I will delete it. > >>> > >>>> > >>>>> + int (*uhs2_set_reg)(struct mmc_host *host, enum sd_uhs2_operation act); > >>>> > >>>> Never called? > >>> > >>> Yes, I will delete it. > >>> > >>>> > >>>>> + int (*uhs2_disable_clk)(struct mmc_host *host); > >>>> > >>>> Never called? > >>> > >>> Yes, I will delete it. > >>> > >>>> > >>>>> + int (*uhs2_enable_clk)(struct mmc_host *host); > >>>> > >>>> Never called? > >>> > >>> Yes, I will delete it. > >>> > >>>> > >>>>> + > >>>>> + /* > >>>>> + * The uhs2_control callback is used to execute SD UHS-II specific > >>>>> + * operations. It's mandatory to implement for hosts that supports the > >>>>> + * SD UHS-II interface (MMC_CAP2_SD_UHS2). Expected return values are a > >>>>> + * negative errno in case of a failure or zero for success. > >>>>> + */ > >>>>> + int (*uhs2_control)(struct mmc_host *host, enum sd_uhs2_operation op); > >>>>> }; > >>>>> > >>>>> struct mmc_cqe_ops { > >>>>> @@ -323,6 +379,7 @@ struct mmc_pwrseq; > >>>>> > >>>>> struct mmc_supply { > >>>>> struct regulator *vmmc; /* Card power supply */ > >>>>> + struct regulator *vmmc2; /* UHS2 VDD2 power supply */ > >>>>> struct regulator *vqmmc; /* Optional Vccq supply */ > >>>>> struct regulator *vqmmc2; /* Optional supply for phy */ > >>>>> }; > >>>>> @@ -344,10 +401,12 @@ struct mmc_host { > >>>>> u32 ocr_avail_sdio; /* SDIO-specific OCR */ > >>>>> u32 ocr_avail_sd; /* SD-specific OCR */ > >>>>> u32 ocr_avail_mmc; /* MMC-specific OCR */ > >>>>> + u32 ocr_avail_uhs2; /* UHS2-specific OCR */ > >>>>> struct wakeup_source *ws; /* Enable consume of uevents */ > >>>>> u32 max_current_330; > >>>>> u32 max_current_300; > >>>>> u32 max_current_180; > >>>>> + u32 max_current_180_vdd2; /* UHS2 vdd2 max curt. */ > >>>>> > >>>>> #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ > >>>>> #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ > >>>>> @@ -366,6 +425,7 @@ struct mmc_host { > >>>>> #define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */ > >>>>> #define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */ > >>>>> #define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */ > >>>>> +#define MMC_VDD2_165_195 0x00000080 /* UHS2 VDD2 1.65 ~ 1.95 */ > >>>>> > >>>>> u32 caps; /* Host capabilities */ > >>>>> > >>>>> @@ -443,7 +503,12 @@ struct mmc_host { > >>>>> #endif > >>>>> #define MMC_CAP2_ALT_GPT_TEGRA (1 << 28) /* Host with eMMC that has GPT entry at a non-standard location */ > >>>>> > >>>>> + int flags; > >>>>> +#define MMC_UHS2_SUPPORT (1 << 0) > >>>> > >>>> MMC_UHS2_SUPPORT is getting mixed up with MMC_UHS2_INITIALIZED. > >>>> Both have the same value, but MMC_UHS2_SUPPORT is for > >>>> host->flags and MMC_UHS2_INITIALIZED is for card->uhs2_state > >>>> > >>>> Please use the correct flag with the correct variable. > >>>> > >>> > >>> The value of MMC_UHS2_SUPPORT is (1<<0) and the value of > >>> MMC_UHS2_INITIALIZED is BIT(1). > >>> Both have different values, therefore I'm not sure what you mean. > >>> May you give me some more advice? Thanks. > >> > >> I guess I got confused about the values, however it is not OK to > >> use MMC_UHS2_INITIALIZED for both mmc->flags and card->uhs2_state. > >> Please make a separate define with a different name for mmc->flags > >> version of MMC_UHS2_INITIALIZED. > > > > MMC_UHS2_INITIALIZED here is used to judge that the UHS-II I/F has been > > initialized and can run in SD-TRAN. In this state, some SD commands > > require a distinction. For example, ACMD (CMD55) should be set by the APP > > field in UHS-II packet. > > OK, but SD commands cannot be sent in UHS-II mode without SD-TRAN > so is the distinction needed? No need, if these SD commands are sent in SD_TRAN mode. > > > > >> > >> Also, I am confused about the purpose of mmc->flags and > >> card->uhs2_state. > > > > It looks like the mmc->flags and card->uhs2_state have the same purpose. > > I think it is having trouble with card == NULL in mmc_app_cmd(*host, *card) > > in patch [V5, 06/26] so just add one more mmc->flags. > > Can wait for confirmation from Victor. > > > >> > >> A host is UHS-II capable as represented by MMC_CAP2_SD_UHS2. > >> To initialize and use a UHS-II card in UHS-II mode, the host > >> must be in UHS-II mode. > >> To initialize and use a UHS-II card in SD mode, the host > >> must be in SD mode. > >> So the state of the card and host is always the same: > >> either UHS-II or not. Note, that is a consequence of the > >> hardware I/F. Whether SD I/F or UHS-II I/F is used is > >> decided before sending any UHS-II commands. SD I/F is > >> disabled during UHS-II PHY initialization, whereas > >> UHS-II I/F is disabled before execution of ACMD41 is > >> completed. > >> > >> So it seems like there would only be a need for one flag > >> to indicate UHS-II mode? > >> > >>> > >>>>> +#define MMC_UHS2_2L_HD (1 << 2) > >>>> > >>>> MMC_UHS2_2L_HD does not seem to be used. Is it needed? > >>> > >>> I confirmed this, I don't use it, I will delete it. > >>> > >>>> > >>>>> + > >>>>> struct sd_uhs2_caps uhs2_caps; /* Host UHS-II capabilities */ > >>>>> + struct sd_uhs2_ios uhs2_ios; /* Host UHS-II capabilities */ > >>>>> > >>>>> int fixed_drv_type; /* fixed driver type for non-removable media */ > >>>>> > >>>>> @@ -695,4 +760,7 @@ int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error); > >>>>> int mmc_send_abort_tuning(struct mmc_host *host, u32 opcode); > >>>>> int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd); > >>>>> > >>>>> +#define mmc_uhs2_2L_HD_mode(h) ((h)->uhs2_ios.is_2L_HD_mode) > >>>>> +#define mmc_uhs2_APP_cmd(h) ((h)->uhs2_ios.is_APP_CMD) > >>>>> + > >>>>> #endif /* LINUX_MMC_HOST_H */ > >>>>> diff --git a/include/linux/mmc/sd_uhs2.h b/include/linux/mmc/sd_uhs2.h > >>>>> new file mode 100644 > >>>>> index 000000000000..8fcf702cf4a5 > >>>>> --- /dev/null > >>>>> +++ b/include/linux/mmc/sd_uhs2.h > >>>>> @@ -0,0 +1,263 @@ > >>>>> +/* SPDX-License-Identifier: GPL-2.0-or-later */ > >>>>> +/* > >>>>> + * Header file for UHS-II packets, Host Controller registers and I/O > >>>>> + * accessors. > >>>>> + * > >>>>> + * Copyright (C) 2014 Intel Corp, All Rights Reserved. > >>>>> + */ > >>>>> +#ifndef LINUX_MMC_UHS2_H > >>>>> +#define LINUX_MMC_UHS2_H > >>>>> + > >>>>> +/* LINK Layer definition */ > >>>>> +/* > >>>>> + * UHS2 Header: > >>>>> + * Refer to UHS-II Addendum Version 1.02 Figure 5-2, the format of CCMD Header is described below: > >>>>> + * bit [3:0] : DID(Destination ID = Node ID of UHS2 card) > >>>>> + * bit [6:4] : TYP(Packet Type) > >>>>> + * 000b: CCMD(Control command packet) > >>>>> + * 001b: DCMD(Data command packet) > >>>>> + * 010b: RES(Response packet) > >>>>> + * 011b: DATA(Data payload packet) > >>>>> + * 111b: MSG(Message packet) > >>>>> + * Others: Reserved > >>>>> + * bit [7] : NP(Native Packet) > >>>>> + * bit [10:8] : TID(Transaction ID) > >>>>> + * bit [11] : Reserved > >>>>> + * bit [15:12]: SID(Source ID 0: Node ID of Host) > >>>>> + * > >>>>> + * Broadcast CCMD issued by Host is represented as DID=SID=0. > >>>>> + */ > >>>>> +/* > >>>>> + * UHS2 Argument: > >>>>> + * Refer to UHS-II Addendum Version 1.02 Figure 6-5, the format of CCMD Argument is described below: > >>>>> + * bit [3:0] : MSB of IOADR > >>>>> + * bit [5:4] : PLEN(Payload Length) > >>>>> + * 00b: 0 byte > >>>>> + * 01b: 4 bytes > >>>>> + * 10b: 8 bytes > >>>>> + * 11b: 16 bytes > >>>>> + * bit [6] : Reserved > >>>>> + * bit [7] : R/W(Read/Write) > >>>>> + * 0: Control read command > >>>>> + * 1: Control write command > >>>>> + * bit [15:8] : LSB of IOADR > >>>>> + * > >>>>> + * I/O Address specifies the address of register in UHS-II I/O space accessed by CCMD. > >>>>> + * The unit of I/O Address is 4 Bytes. It is transmitted in MSB first, LSB last. > >>>>> + */ > >>>>> +#define UHS2_NATIVE_PACKET_POS 7 > >>>>> +#define UHS2_NATIVE_PACKET (1 << UHS2_NATIVE_PACKET_POS) > >>>>> + > >>>>> +#define UHS2_PACKET_TYPE_POS 4 > >>>>> +#define UHS2_PACKET_TYPE_CCMD (0 << UHS2_PACKET_TYPE_POS) > >>>>> +#define UHS2_PACKET_TYPE_DCMD (1 << UHS2_PACKET_TYPE_POS) > >>>>> +#define UHS2_PACKET_TYPE_RES (2 << UHS2_PACKET_TYPE_POS) > >>>>> +#define UHS2_PACKET_TYPE_DATA (3 << UHS2_PACKET_TYPE_POS) > >>>>> +#define UHS2_PACKET_TYPE_MSG (7 << UHS2_PACKET_TYPE_POS) > >>>>> + > >>>>> +#define UHS2_DEST_ID_MASK 0x0F > >>>>> +#define UHS2_DEST_ID 0x1 > >>>>> + > >>>>> +#define UHS2_SRC_ID_POS 12 > >>>>> +#define UHS2_SRC_ID_MASK 0xF000 > >>>>> + > >>>>> +#define UHS2_TRANS_ID_POS 8 > >>>>> +#define UHS2_TRANS_ID_MASK 0x0700 > >>>>> + > >>>>> +/* UHS2 MSG */ > >>>>> +#define UHS2_MSG_CTG_POS 5 > >>>>> +#define UHS2_MSG_CTG_LMSG 0x00 > >>>>> +#define UHS2_MSG_CTG_INT 0x60 > >>>>> +#define UHS2_MSG_CTG_AMSG 0x80 > >>>>> + > >>>>> +#define UHS2_MSG_CTG_FCREQ 0x00 > >>>>> +#define UHS2_MSG_CTG_FCRDY 0x01 > >>>>> +#define UHS2_MSG_CTG_STAT 0x02 > >>>>> + > >>>>> +#define UHS2_MSG_CODE_POS 8 > >>>>> +#define UHS2_MSG_CODE_FC_UNRECOVER_ERR 0x8 > >>>>> +#define UHS2_MSG_CODE_STAT_UNRECOVER_ERR 0x8 > >>>>> +#define UHS2_MSG_CODE_STAT_RECOVER_ERR 0x1 > >>>>> + > >>>>> +/* TRANS Layer definition */ > >>>>> + > >>>>> +/* Native packets*/ > >>>>> +#define UHS2_NATIVE_CMD_RW_POS 7 > >>>>> +#define UHS2_NATIVE_CMD_WRITE (1 << UHS2_NATIVE_CMD_RW_POS) > >>>>> +#define UHS2_NATIVE_CMD_READ (0 << UHS2_NATIVE_CMD_RW_POS) > >>>>> + > >>>>> +#define UHS2_NATIVE_CMD_PLEN_POS 4 > >>>>> +#define UHS2_NATIVE_CMD_PLEN_4B (1 << UHS2_NATIVE_CMD_PLEN_POS) > >>>>> +#define UHS2_NATIVE_CMD_PLEN_8B (2 << UHS2_NATIVE_CMD_PLEN_POS) > >>>>> +#define UHS2_NATIVE_CMD_PLEN_16B (3 << UHS2_NATIVE_CMD_PLEN_POS) > >>>>> + > >>>>> +#define UHS2_NATIVE_CCMD_GET_MIOADR_MASK 0xF00 > >>>>> +#define UHS2_NATIVE_CCMD_MIOADR_MASK 0x0F > >>>>> + > >>>>> +#define UHS2_NATIVE_CCMD_LIOADR_POS 8 > >>>>> +#define UHS2_NATIVE_CCMD_GET_LIOADR_MASK 0x0FF > >>>>> + > >>>>> +#define UHS2_CCMD_DEV_INIT_COMPLETE_FLAG BIT(11) > >>>>> +#define UHS2_DEV_INIT_PAYLOAD_LEN 1 > >>>>> +#define UHS2_DEV_INIT_RESP_LEN 6 > >>>>> +#define UHS2_DEV_ENUM_PAYLOAD_LEN 1 > >>>>> +#define UHS2_DEV_ENUM_RESP_LEN 8 > >>>>> +#define UHS2_CFG_WRITE_PAYLOAD_LEN 2 > >>>>> +#define UHS2_CFG_WRITE_PHY_SET_RESP_LEN 4 > >>>>> +#define UHS2_CFG_WRITE_GENERIC_SET_RESP_LEN 5 > >>>>> +#define UHS2_GO_DORMANT_PAYLOAD_LEN 1 > >>>>> + > >>>>> +/* > >>>>> + * UHS2 Argument: > >>>>> + * Refer to UHS-II Addendum Version 1.02 Figure 6-8, the format of DCMD Argument is described below: > >>>>> + * bit [3:0] : Reserved > >>>>> + * bit [6:3] : TMODE(Transfer Mode) > >>>>> + * bit 3: DAM(Data Access Mode) > >>>>> + * bit 4: TLUM(TLEN Unit Mode) > >>>>> + * bit 5: LM(Length Mode) > >>>>> + * bit 6: DM(Duplex Mode) > >>>>> + * bit [7] : R/W(Read/Write) > >>>>> + * 0: Control read command > >>>>> + * 1: Control write command > >>>>> + * bit [15:8] : Reserved > >>>>> + * > >>>>> + * I/O Address specifies the address of register in UHS-II I/O space accessed by CCMD. > >>>>> + * The unit of I/O Address is 4 Bytes. It is transmitted in MSB first, LSB last. > >>>>> + */ > >>>>> +#define UHS2_DCMD_DM_POS 6 > >>>>> +#define UHS2_DCMD_2L_HD_MODE (1 << UHS2_DCMD_DM_POS) > >>>>> +#define UHS2_DCMD_LM_POS 5 > >>>>> +#define UHS2_DCMD_LM_TLEN_EXIST (1 << UHS2_DCMD_LM_POS) > >>>>> +#define UHS2_DCMD_TLUM_POS 4 > >>>>> +#define UHS2_DCMD_TLUM_BYTE_MODE (1 << UHS2_DCMD_TLUM_POS) > >>>>> +#define UHS2_NATIVE_DCMD_DAM_POS 3 > >>>>> +#define UHS2_NATIVE_DCMD_DAM_IO (1 << UHS2_NATIVE_DCMD_DAM_POS) > >>>>> + > >>>>> +/* > >>>>> + * Per UHS2 spec, DCMD payload should be MSB first. There may be > >>>>> + * two types of data be assembled to MSB: > >>>>> + * 1. TLEN: Input block size for single read/write and number of blocks > >>>>> + * for multiple read/write to calculate TLEN as MSB first per spec. > >>>>> + * 2. SD command argument. > >>>>> + */ > >>>>> +static inline __be32 uhs2_dcmd_convert_msb(u32 input) > >>>>> +{ > >>>>> + u32 ret = 0; > >>>>> + > >>>>> + ret = ((input & 0xFF) << 24) | > >>>>> + (((input >> 8) & 0xFF) << 16) | > >>>>> + (((input >> 16) & 0xFF) << 8) | > >>>>> + ((input >> 24) & 0xFF); > >>>>> + return cpu_to_be32(ret); > >>>>> +} > >>>>> + > >>>>> +#define UHS2_RES_NACK_POS 7 > >>>>> +#define UHS2_RES_NACK_MASK (0x1 << UHS2_RES_NACK_POS) > >>>>> + > >>>>> +#define UHS2_RES_ECODE_POS 4 > >>>>> +#define UHS2_RES_ECODE_MASK 0x7 > >>>>> +#define UHS2_RES_ECODE_COND 1 > >>>>> +#define UHS2_RES_ECODE_ARG 2 > >>>>> +#define UHS2_RES_ECODE_GEN 3 > >>>>> + > >>>>> +/* IOADR of device registers */ > >>>>> +#define UHS2_IOADR_GENERIC_CAPS 0x00 > >>>>> +#define UHS2_IOADR_PHY_CAPS 0x02 > >>>>> +#define UHS2_IOADR_LINK_CAPS 0x04 > >>>>> +#define UHS2_IOADR_RSV_CAPS 0x06 > >>>>> +#define UHS2_IOADR_GENERIC_SETTINGS 0x08 > >>>>> +#define UHS2_IOADR_PHY_SETTINGS 0x0A > >>>>> +#define UHS2_IOADR_LINK_SETTINGS 0x0C > >>>>> +#define UHS2_IOADR_PRESET 0x40 > >>>>> + > >>>>> +/* SD application packets */ > >>>>> +#define UHS2_SD_CMD_INDEX_POS 8 > >>>>> + > >>>>> +#define UHS2_SD_CMD_APP_POS 14 > >>>>> +#define UHS2_SD_CMD_APP (1 << UHS2_SD_CMD_APP_POS) > >>>>> + > >>>>> +/* UHS-II Device Registers */ > >>>>> +#define UHS2_DEV_CONFIG_REG 0x000 > >>>>> + > >>>>> +/* General Caps and Settings registers */ > >>>>> +#define UHS2_DEV_CONFIG_GEN_CAPS (UHS2_DEV_CONFIG_REG + 0x000) > >>>>> +#define UHS2_DEV_CONFIG_N_LANES_POS 8 > >>>>> +#define UHS2_DEV_CONFIG_N_LANES_MASK 0x3F > >>>>> +#define UHS2_DEV_CONFIG_2L_HD_FD 0x1 > >>>>> +#define UHS2_DEV_CONFIG_2D1U_FD 0x2 > >>>>> +#define UHS2_DEV_CONFIG_1D2U_FD 0x4 > >>>>> +#define UHS2_DEV_CONFIG_2D2U_FD 0x8 > >>>>> +#define UHS2_DEV_CONFIG_DADR_POS 14 > >>>>> +#define UHS2_DEV_CONFIG_DADR_MASK 0x1 > >>>>> +#define UHS2_DEV_CONFIG_APP_POS 16 > >>>>> +#define UHS2_DEV_CONFIG_APP_MASK 0xFF > >>>>> +#define UHS2_DEV_CONFIG_APP_SD_MEM 0x1 > >>>>> + > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET (UHS2_DEV_CONFIG_REG + 0x008) > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_N_LANES_POS 8 > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_2L_FD_HD 0x0 > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_2D1U_FD 0x2 > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_1D2U_FD 0x3 > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_2D2U_FD 0x4 > >>>>> +#define UHS2_DEV_CONFIG_GEN_SET_CFG_COMPLETE BIT(31) > >>>>> + > >>>>> +/* PHY Caps and Settings registers */ > >>>>> +#define UHS2_DEV_CONFIG_PHY_CAPS (UHS2_DEV_CONFIG_REG + 0x002) > >>>>> +#define UHS2_DEV_CONFIG_PHY_MINOR_MASK 0xF > >>>>> +#define UHS2_DEV_CONFIG_PHY_MAJOR_POS 4 > >>>>> +#define UHS2_DEV_CONFIG_PHY_MAJOR_MASK 0x3 > >>>>> +#define UHS2_DEV_CONFIG_CAN_HIBER_POS 15 > >>>>> +#define UHS2_DEV_CONFIG_CAN_HIBER_MASK 0x1 > >>>>> +#define UHS2_DEV_CONFIG_PHY_CAPS1 (UHS2_DEV_CONFIG_REG + 0x003) > >>>>> +#define UHS2_DEV_CONFIG_N_LSS_SYN_MASK 0xF > >>>>> +#define UHS2_DEV_CONFIG_N_LSS_DIR_POS 4 > >>>>> +#define UHS2_DEV_CONFIG_N_LSS_DIR_MASK 0xF > >>>>> + > >>>>> +#define UHS2_DEV_CONFIG_PHY_SET (UHS2_DEV_CONFIG_REG + 0x00A) > >>>>> +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_POS 6 > >>>>> +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_A 0x0 > >>>>> +#define UHS2_DEV_CONFIG_PHY_SET_SPEED_B 0x1 > >>>>> + > >>>>> +/* LINK-TRAN Caps and Settings registers */ > >>>>> +#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS (UHS2_DEV_CONFIG_REG + 0x004) > >>>>> +#define UHS2_DEV_CONFIG_LT_MINOR_MASK 0xF > >>>>> +#define UHS2_DEV_CONFIG_LT_MAJOR_POS 4 > >>>>> +#define UHS2_DEV_CONFIG_LT_MAJOR_MASK 0x3 > >>>>> +#define UHS2_DEV_CONFIG_N_FCU_POS 8 > >>>>> +#define UHS2_DEV_CONFIG_N_FCU_MASK 0xFF > >>>>> +#define UHS2_DEV_CONFIG_DEV_TYPE_POS 16 > >>>>> +#define UHS2_DEV_CONFIG_DEV_TYPE_MASK 0x7 > >>>>> +#define UHS2_DEV_CONFIG_MAX_BLK_LEN_POS 20 > >>>>> +#define UHS2_DEV_CONFIG_MAX_BLK_LEN_MASK 0xFFF > >>>>> +#define UHS2_DEV_CONFIG_LINK_TRAN_CAPS1 (UHS2_DEV_CONFIG_REG + 0x005) > >>>>> +#define UHS2_DEV_CONFIG_N_DATA_GAP_MASK 0xFF > >>>>> + > >>>>> +#define UHS2_DEV_CONFIG_LINK_TRAN_SET (UHS2_DEV_CONFIG_REG + 0x00C) > >>>>> +#define UHS2_DEV_CONFIG_LT_SET_MAX_BLK_LEN 0x200 > >>>>> +#define UHS2_DEV_CONFIG_LT_SET_MAX_RETRY_POS 16 > >>>>> + > >>>>> +/* Preset register */ > >>>>> +#define UHS2_DEV_CONFIG_PRESET (UHS2_DEV_CONFIG_REG + 0x040) > >>>>> + > >>>>> +#define UHS2_DEV_INT_REG 0x100 > >>>>> + > >>>>> +#define UHS2_DEV_STATUS_REG 0x180 > >>>>> + > >>>>> +#define UHS2_DEV_CMD_REG 0x200 > >>>>> +#define UHS2_DEV_CMD_FULL_RESET (UHS2_DEV_CMD_REG + 0x000) > >>>>> +#define UHS2_DEV_CMD_GO_DORMANT_STATE (UHS2_DEV_CMD_REG + 0x001) > >>>>> +#define UHS2_DEV_CMD_DORMANT_HIBER BIT(7) > >>>>> +#define UHS2_DEV_CMD_DEVICE_INIT (UHS2_DEV_CMD_REG + 0x002) > >>>>> +#define UHS2_DEV_INIT_COMPLETE_FLAG BIT(11) > >>>>> +#define UHS2_DEV_CMD_ENUMERATE (UHS2_DEV_CMD_REG + 0x003) > >>>>> +#define UHS2_DEV_CMD_TRANS_ABORT (UHS2_DEV_CMD_REG + 0x004) > >>>>> + > >>>>> +#define UHS2_RCLK_MAX 52000000 > >>>>> +#define UHS2_RCLK_MIN 26000000 > >>>>> + > >>>>> +struct sd_uhs2_wait_active_state_data { > >>>>> + struct mmc_host *host; > >>>>> + struct mmc_command *cmd; > >>>>> +}; > >>>>> + > >>>>> +#endif /* LINUX_MMC_UHS2_H */ > >>>> > >>> > >>> Thanks, Victor Shih > >> > > > > Best regards, > > Ben Chuang >