From patchwork Thu Apr 11 20:03:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajay Gupta X-Patchwork-Id: 10896759 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 64D111800 for ; Thu, 11 Apr 2019 20:03:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4F1DB28D13 for ; Thu, 11 Apr 2019 20:03:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4365A28DB4; Thu, 11 Apr 2019 20:03:27 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham 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 C679528D13 for ; Thu, 11 Apr 2019 20:03:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726667AbfDKUD0 (ORCPT ); Thu, 11 Apr 2019 16:03:26 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:35681 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726577AbfDKUDZ (ORCPT ); Thu, 11 Apr 2019 16:03:25 -0400 Received: by mail-pf1-f193.google.com with SMTP id t21so3973500pfh.2 for ; Thu, 11 Apr 2019 13:03:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=v+Tgxfcou92wUpCjGv9PntjB0Kbc9s02uFIb05N0kyM=; b=J6rHDzm+eH+52RXJ/u9AvCG4hduyWEqwyLxUBjM7i+lUSKlGIJ7naLyc8wcvHjBQeY b6CiMGVAk1e+b0SqFnpv3Tu3ZiLwQQ+83XYw/Z/bMXinpGtQv5zrzytgXr4LAmpt+R/P 6/T9K6GdNiLbSdrtVISTKfnopStK+QVyAT36Nlg6GI6S+9H9NBcQHRgBjwXBry/qFP9k k2cfqrLYHqtEctGYVNitN/aWUL/jXqvZqWuPl/k6mmtSeDuCAKmObPk/TtA3lTVDYuJ+ no6+9dk0JMcsLMFbTjayHNEecyoGjxCTaG+f9w+gjk4blGACajiotWcMx5dIquc05xDE Qxlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=v+Tgxfcou92wUpCjGv9PntjB0Kbc9s02uFIb05N0kyM=; b=Rcy0ahKt5wa47Wtb91TBtgFK8Fsmlkr3b047bqcAuoXJalap6lNWt6weJ+oKc7Ku2Y 0Evqv8n/DqbQXb+AmWedfx/e0fFfkGVaGk/hMYkh+XTBm7Wmd+YzTdBbmcOrwQ5Z2wSA HlZCjC3AD4M5cjSsYHUtq82RNyVNM10ljzS3XjSHNPFdGss/slH8I3G3EGQXUv2rHwOu 98otUn1YhnRfXRo2XP+P4fPIEyPtY5CktU44T8PqIdtOcMQxjXSOQAP++qEWaPygOKKH BsjHTOiKy3nGeJTjg0a96kXYsQ0WtZhHfTsUzv10N/6zyY9oQRQ1G6p4E6FgWTkPCi2k Cb+A== X-Gm-Message-State: APjAAAX4yt2Z0iid+EccN350jxHJ8xCjZhovyYa6epPXjor7Cyj38K8Y Djz2Rb2yE+qO4F4gFgpE7Bk= X-Google-Smtp-Source: APXvYqwDWQZwu3xAng7gn0xPpmm/6slVQbRSJtSlnMhCTn10hZeUEJYB5gFRrtWTGKahDO5TplezoQ== X-Received: by 2002:a63:744b:: with SMTP id e11mr48573395pgn.327.1555013005042; Thu, 11 Apr 2019 13:03:25 -0700 (PDT) Received: from ajayg.nvidia.com (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id n26sm107920326pfi.165.2019.04.11.13.03.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Apr 2019 13:03:24 -0700 (PDT) From: Ajay Gupta X-Google-Original-From: Ajay Gupta To: heikki.krogerus@linux.intel.com Cc: linux-usb@vger.kernel.org, Ajay Gupta Subject: [PATCH v6 1/2] usb: typec: ucsi: ccg: add get_fw_info function Date: Thu, 11 Apr 2019 13:03:09 -0700 Message-Id: <20190411200310.9775-2-ajayg@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190411200310.9775-1-ajayg@nvidia.com> References: <20190411200310.9775-1-ajayg@nvidia.com> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Function is to get the details of ccg firmware and device version. It will be useful in debugging and also during firmware update. Signed-off-by: Ajay Gupta Signed-off-by: Heikki Krogerus --- Changes from v5 to v6 - None drivers/usb/typec/ucsi/ucsi_ccg.c | 66 ++++++++++++++++++++++++++++++- 1 file changed, 64 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c index de8a43bdff68..3884fb41c72e 100644 --- a/drivers/usb/typec/ucsi/ucsi_ccg.c +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c @@ -17,15 +17,54 @@ #include #include "ucsi.h" +enum enum_fw_mode { + BOOT, /* bootloader */ + FW1, /* FW partition-1 (contains secondary fw) */ + FW2, /* FW partition-2 (contains primary fw) */ + FW_INVALID, +}; + +struct ccg_dev_info { +#define CCG_DEVINFO_FWMODE_SHIFT (0) +#define CCG_DEVINFO_FWMODE_MASK (0x3 << CCG_DEVINFO_FWMODE_SHIFT) +#define CCG_DEVINFO_PDPORTS_SHIFT (2) +#define CCG_DEVINFO_PDPORTS_MASK (0x3 << CCG_DEVINFO_PDPORTS_SHIFT) + u8 mode; + u8 bl_mode; + __le16 silicon_id; + __le16 bl_last_row; +} __packed; + +struct version_format { + __le16 build; + u8 patch; + u8 ver; +#define CCG_VERSION_MIN_SHIFT (0) +#define CCG_VERSION_MIN_MASK (0xf << CCG_VERSION_MIN_SHIFT) +#define CCG_VERSION_MAJ_SHIFT (4) +#define CCG_VERSION_MAJ_MASK (0xf << CCG_VERSION_MAJ_SHIFT) +} __packed; + +struct version_info { + struct version_format base; + struct version_format app; +}; + struct ucsi_ccg { struct device *dev; struct ucsi *ucsi; struct ucsi_ppm ppm; struct i2c_client *client; + struct ccg_dev_info info; + /* version info for boot, primary and secondary */ + struct version_info version[FW2 + 1]; }; -#define CCGX_RAB_INTR_REG 0x06 -#define CCGX_RAB_UCSI_CONTROL 0x39 +#define CCGX_RAB_DEVICE_MODE 0x0000 +#define CCGX_RAB_INTR_REG 0x0006 +#define CCGX_RAB_READ_ALL_VER 0x0010 +#define CCGX_RAB_READ_FW2_VER 0x0020 +#define CCGX_RAB_UCSI_CONTROL 0x0039 #define CCGX_RAB_UCSI_CONTROL_START BIT(0) #define CCGX_RAB_UCSI_CONTROL_STOP BIT(1) #define CCGX_RAB_UCSI_DATA_BLOCK(offset) (0xf000 | ((offset) & 0xff)) @@ -220,6 +259,23 @@ static irqreturn_t ccg_irq_handler(int irq, void *data) return IRQ_HANDLED; } +static int get_fw_info(struct ucsi_ccg *uc) +{ + int err; + + err = ccg_read(uc, CCGX_RAB_READ_ALL_VER, (u8 *)(&uc->version), + sizeof(uc->version)); + if (err < 0) + return err; + + err = ccg_read(uc, CCGX_RAB_DEVICE_MODE, (u8 *)(&uc->info), + sizeof(uc->info)); + if (err < 0) + return err; + + return 0; +} + static int ucsi_ccg_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -248,6 +304,12 @@ static int ucsi_ccg_probe(struct i2c_client *client, return status; } + status = get_fw_info(uc); + if (status < 0) { + dev_err(uc->dev, "get_fw_info failed - %d\n", status); + return status; + } + status = devm_request_threaded_irq(dev, client->irq, NULL, ccg_irq_handler, IRQF_ONESHOT | IRQF_TRIGGER_HIGH, From patchwork Thu Apr 11 20:03:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajay Gupta X-Patchwork-Id: 10896761 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 3E5A817E0 for ; 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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id n26sm107920326pfi.165.2019.04.11.13.03.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Apr 2019 13:03:25 -0700 (PDT) From: Ajay Gupta X-Google-Original-From: Ajay Gupta To: heikki.krogerus@linux.intel.com Cc: linux-usb@vger.kernel.org, Ajay Gupta Subject: [PATCH v6 2/2] usb: typec: ucsi: ccg: add firmware flashing support Date: Thu, 11 Apr 2019 13:03:10 -0700 Message-Id: <20190411200310.9775-3-ajayg@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190411200310.9775-1-ajayg@nvidia.com> References: <20190411200310.9775-1-ajayg@nvidia.com> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP CCGx has two copies of the firmware in addition to the bootloader. If the device is running FW1, FW2 can be updated with the new version. Dual firmware mode allows the CCG device to stay in a PD contract and support USB PD and Type-C functionality while a firmware update is in progress. First we read the currently flashed firmware version of both primary and secondary firmware and then compare it with version of firmware file to determine if flashing is required. Command framework is added to support sending commands to CCGx controller. We wait for response after sending the command and then read the response from RAB_RESPONSE register. Below commands are supported, - ENTER_FLASHING - RESET - PDPORT_ENABLE - JUMP_TO_BOOT - FLASH_ROW_RW - VALIDATE_FW Command specific mutex lock is also added to sync between driver and user threads. PD port number information is added which is required while sending PD_PORT_ENABLE command Signed-off-by: Ajay Gupta --- Changes from v5 to v6 - Fixed below sparse warnings "restricted __le16 degrades to integer" drivers/usb/typec/ucsi/ucsi_ccg.c | 831 +++++++++++++++++++++++++++++- 1 file changed, 818 insertions(+), 13 deletions(-) diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c index 3884fb41c72e..a899d4c29125 100644 --- a/drivers/usb/typec/ucsi/ucsi_ccg.c +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c @@ -9,6 +9,7 @@ */ #include #include +#include #include #include #include @@ -24,6 +25,73 @@ enum enum_fw_mode { FW_INVALID, }; +#define CCGX_RAB_DEVICE_MODE 0x0000 +#define CCGX_RAB_INTR_REG 0x0006 +#define DEV_INT BIT(0) +#define PORT0_INT BIT(1) +#define PORT1_INT BIT(2) +#define UCSI_READ_INT BIT(7) +#define CCGX_RAB_JUMP_TO_BOOT 0x0007 +#define TO_BOOT 'J' +#define TO_ALT_FW 'A' +#define CCGX_RAB_RESET_REQ 0x0008 +#define RESET_SIG 'R' +#define CMD_RESET_I2C 0x0 +#define CMD_RESET_DEV 0x1 +#define CCGX_RAB_ENTER_FLASHING 0x000A +#define FLASH_ENTER_SIG 'P' +#define CCGX_RAB_VALIDATE_FW 0x000B +#define CCGX_RAB_FLASH_ROW_RW 0x000C +#define FLASH_SIG 'F' +#define FLASH_RD_CMD 0x0 +#define FLASH_WR_CMD 0x1 +#define FLASH_FWCT1_WR_CMD 0x2 +#define FLASH_FWCT2_WR_CMD 0x3 +#define FLASH_FWCT_SIG_WR_CMD 0x4 +#define CCGX_RAB_READ_ALL_VER 0x0010 +#define CCGX_RAB_READ_FW2_VER 0x0020 +#define CCGX_RAB_UCSI_CONTROL 0x0039 +#define CCGX_RAB_UCSI_CONTROL_START BIT(0) +#define CCGX_RAB_UCSI_CONTROL_STOP BIT(1) +#define CCGX_RAB_UCSI_DATA_BLOCK(offset) (0xf000 | ((offset) & 0xff)) +#define REG_FLASH_RW_MEM 0x0200 +#define DEV_REG_IDX CCGX_RAB_DEVICE_MODE +#define CCGX_RAB_PDPORT_ENABLE 0x002C +#define PDPORT_1 BIT(0) +#define PDPORT_2 BIT(1) +#define CCGX_RAB_RESPONSE 0x007E +#define ASYNC_EVENT BIT(7) + +/* CCGx events & async msg codes */ +#define RESET_COMPLETE 0x80 +#define EVENT_INDEX RESET_COMPLETE +#define PORT_CONNECT_DET 0x84 +#define PORT_DISCONNECT_DET 0x85 +#define ROLE_SWAP_COMPELETE 0x87 + +/* ccg firmware */ +#define CYACD_LINE_SIZE 527 +#define CCG4_ROW_SIZE 256 +#define FW1_METADATA_ROW 0x1FF +#define FW2_METADATA_ROW 0x1FE +#define FW_CFG_TABLE_SIG_SIZE 256 + +static int secondary_fw_min_ver = 41; + +enum enum_flash_mode { + SECONDARY_BL, /* update secondary using bootloader */ + PRIMARY, /* update primary using secondary */ + SECONDARY, /* update secondary using primary */ + FLASH_NOT_NEEDED, /* update not required */ + FLASH_INVALID, +}; + +static const char * const ccg_fw_names[] = { + "ccg_boot.cyacd", + "ccg_primary.cyacd", + "ccg_secondary.cyacd" +}; + struct ccg_dev_info { #define CCG_DEVINFO_FWMODE_SHIFT (0) #define CCG_DEVINFO_FWMODE_MASK (0x3 << CCG_DEVINFO_FWMODE_SHIFT) @@ -50,6 +118,50 @@ struct version_info { struct version_format app; }; +struct fw_config_table { + u32 identity; + u16 table_size; + u8 fwct_version; + u8 is_key_change; + u8 guid[16]; + struct version_format base; + struct version_format app; + u8 primary_fw_digest[32]; + u32 key_exp_length; + u8 key_modulus[256]; + u8 key_exp[4]; +}; + +/* CCGx response codes */ +enum ccg_resp_code { + CMD_NO_RESP = 0x00, + CMD_SUCCESS = 0x02, + FLASH_DATA_AVAILABLE = 0x03, + CMD_INVALID = 0x05, + FLASH_UPDATE_FAIL = 0x07, + INVALID_FW = 0x08, + INVALID_ARG = 0x09, + CMD_NOT_SUPPORT = 0x0A, + TRANSACTION_FAIL = 0x0C, + PD_CMD_FAIL = 0x0D, + UNDEF_ERROR = 0x0F, + INVALID_RESP = 0x10, +}; + +#define CCG_EVENT_MAX (EVENT_INDEX + 43) + +struct ccg_cmd { + u16 reg; + u32 data; + int len; + u32 delay; /* ms delay for cmd timeout */ +}; + +struct ccg_resp { + u8 code; + u8 length; +}; + struct ucsi_ccg { struct device *dev; struct ucsi *ucsi; @@ -58,17 +170,18 @@ struct ucsi_ccg { struct ccg_dev_info info; /* version info for boot, primary and secondary */ struct version_info version[FW2 + 1]; + /* CCG HPI communication flags */ + unsigned long flags; +#define RESET_PENDING 0 +#define DEV_CMD_PENDING 1 + struct ccg_resp dev_resp; + u8 cmd_resp; + int port_num; + int irq; + struct work_struct work; + struct mutex lock; /* to sync between user and driver thread */ }; -#define CCGX_RAB_DEVICE_MODE 0x0000 -#define CCGX_RAB_INTR_REG 0x0006 -#define CCGX_RAB_READ_ALL_VER 0x0010 -#define CCGX_RAB_READ_FW2_VER 0x0020 -#define CCGX_RAB_UCSI_CONTROL 0x0039 -#define CCGX_RAB_UCSI_CONTROL_START BIT(0) -#define CCGX_RAB_UCSI_CONTROL_STOP BIT(1) -#define CCGX_RAB_UCSI_DATA_BLOCK(offset) (0xf000 | ((offset) & 0xff)) - static int ccg_read(struct ucsi_ccg *uc, u16 rab, u8 *data, u32 len) { struct i2c_client *client = uc->client; @@ -276,6 +389,682 @@ static int get_fw_info(struct ucsi_ccg *uc) return 0; } +static inline bool invalid_async_evt(int code) +{ + return (code >= CCG_EVENT_MAX) || (code < EVENT_INDEX); +} + +static void ccg_process_response(struct ucsi_ccg *uc) +{ + struct device *dev = uc->dev; + + if (uc->dev_resp.code & ASYNC_EVENT) { + if (uc->dev_resp.code == RESET_COMPLETE) { + if (test_bit(RESET_PENDING, &uc->flags)) + uc->cmd_resp = uc->dev_resp.code; + get_fw_info(uc); + } + if (invalid_async_evt(uc->dev_resp.code)) + dev_err(dev, "invalid async evt %d\n", + uc->dev_resp.code); + } else { + if (test_bit(DEV_CMD_PENDING, &uc->flags)) { + uc->cmd_resp = uc->dev_resp.code; + clear_bit(DEV_CMD_PENDING, &uc->flags); + } else { + dev_err(dev, "dev resp 0x%04x but no cmd pending\n", + uc->dev_resp.code); + } + } +} + +static int ccg_read_response(struct ucsi_ccg *uc) +{ + unsigned long target = jiffies + msecs_to_jiffies(1000); + struct device *dev = uc->dev; + u8 intval; + int status; + + /* wait for interrupt status to get updated */ + do { + status = ccg_read(uc, CCGX_RAB_INTR_REG, &intval, + sizeof(intval)); + if (status < 0) + return status; + + if (intval & DEV_INT) + break; + usleep_range(500, 600); + } while (time_is_after_jiffies(target)); + + if (time_is_before_jiffies(target)) { + dev_err(dev, "response timeout error\n"); + return -ETIME; + } + + status = ccg_read(uc, CCGX_RAB_RESPONSE, (u8 *)&uc->dev_resp, + sizeof(uc->dev_resp)); + if (status < 0) + return status; + + status = ccg_write(uc, CCGX_RAB_INTR_REG, &intval, sizeof(intval)); + if (status < 0) + return status; + + return 0; +} + +/* Caller must hold uc->lock */ +static int ccg_send_command(struct ucsi_ccg *uc, struct ccg_cmd *cmd) +{ + struct device *dev = uc->dev; + int ret; + + switch (cmd->reg & 0xF000) { + case DEV_REG_IDX: + set_bit(DEV_CMD_PENDING, &uc->flags); + break; + default: + dev_err(dev, "invalid cmd register\n"); + break; + } + + ret = ccg_write(uc, cmd->reg, (u8 *)&cmd->data, cmd->len); + if (ret < 0) + return ret; + + msleep(cmd->delay); + + ret = ccg_read_response(uc); + if (ret < 0) { + dev_err(dev, "response read error\n"); + switch (cmd->reg & 0xF000) { + case DEV_REG_IDX: + clear_bit(DEV_CMD_PENDING, &uc->flags); + break; + default: + dev_err(dev, "invalid cmd register\n"); + break; + } + return -EIO; + } + ccg_process_response(uc); + + return uc->cmd_resp; +} + +static int ccg_cmd_enter_flashing(struct ucsi_ccg *uc) +{ + struct ccg_cmd cmd; + int ret; + + cmd.reg = CCGX_RAB_ENTER_FLASHING; + cmd.data = FLASH_ENTER_SIG; + cmd.len = 1; + cmd.delay = 50; + + mutex_lock(&uc->lock); + + ret = ccg_send_command(uc, &cmd); + + mutex_unlock(&uc->lock); + + if (ret != CMD_SUCCESS) { + dev_err(uc->dev, "enter flashing failed ret=%d\n", ret); + return ret; + } + + return 0; +} + +static int ccg_cmd_reset(struct ucsi_ccg *uc) +{ + struct ccg_cmd cmd; + u8 *p; + int ret; + + p = (u8 *)&cmd.data; + cmd.reg = CCGX_RAB_RESET_REQ; + p[0] = RESET_SIG; + p[1] = CMD_RESET_DEV; + cmd.len = 2; + cmd.delay = 5000; + + mutex_lock(&uc->lock); + + set_bit(RESET_PENDING, &uc->flags); + + ret = ccg_send_command(uc, &cmd); + if (ret != RESET_COMPLETE) + goto err_clear_flag; + + ret = 0; + +err_clear_flag: + clear_bit(RESET_PENDING, &uc->flags); + + mutex_unlock(&uc->lock); + + return ret; +} + +static int ccg_cmd_port_control(struct ucsi_ccg *uc, bool enable) +{ + struct ccg_cmd cmd; + int ret; + + cmd.reg = CCGX_RAB_PDPORT_ENABLE; + if (enable) + cmd.data = (uc->port_num == 1) ? + PDPORT_1 : (PDPORT_1 | PDPORT_2); + else + cmd.data = 0x0; + cmd.len = 1; + cmd.delay = 10; + + mutex_lock(&uc->lock); + + ret = ccg_send_command(uc, &cmd); + + mutex_unlock(&uc->lock); + + if (ret != CMD_SUCCESS) { + dev_err(uc->dev, "port control failed ret=%d\n", ret); + return ret; + } + return 0; +} + +static int ccg_cmd_jump_boot_mode(struct ucsi_ccg *uc, int bl_mode) +{ + struct ccg_cmd cmd; + int ret; + + cmd.reg = CCGX_RAB_JUMP_TO_BOOT; + + if (bl_mode) + cmd.data = TO_BOOT; + else + cmd.data = TO_ALT_FW; + + cmd.len = 1; + cmd.delay = 100; + + mutex_lock(&uc->lock); + + set_bit(RESET_PENDING, &uc->flags); + + ret = ccg_send_command(uc, &cmd); + if (ret != RESET_COMPLETE) + goto err_clear_flag; + + ret = 0; + +err_clear_flag: + clear_bit(RESET_PENDING, &uc->flags); + + mutex_unlock(&uc->lock); + + return ret; +} + +static int +ccg_cmd_write_flash_row(struct ucsi_ccg *uc, u16 row, + const void *data, u8 fcmd) +{ + struct i2c_client *client = uc->client; + struct ccg_cmd cmd; + u8 buf[CCG4_ROW_SIZE + 2]; + u8 *p; + int ret; + + /* Copy the data into the flash read/write memory. */ + put_unaligned_le16(REG_FLASH_RW_MEM, buf); + + memcpy(buf + 2, data, CCG4_ROW_SIZE); + + mutex_lock(&uc->lock); + + ret = i2c_master_send(client, buf, CCG4_ROW_SIZE + 2); + if (ret != CCG4_ROW_SIZE + 2) { + dev_err(uc->dev, "REG_FLASH_RW_MEM write fail %d\n", ret); + return ret < 0 ? ret : -EIO; + } + + /* Use the FLASH_ROW_READ_WRITE register to trigger */ + /* writing of data to the desired flash row */ + p = (u8 *)&cmd.data; + cmd.reg = CCGX_RAB_FLASH_ROW_RW; + p[0] = FLASH_SIG; + p[1] = fcmd; + put_unaligned_le16(row, &p[2]); + cmd.len = 4; + cmd.delay = 50; + if (fcmd == FLASH_FWCT_SIG_WR_CMD) + cmd.delay += 400; + if (row == 510) + cmd.delay += 220; + ret = ccg_send_command(uc, &cmd); + + mutex_unlock(&uc->lock); + + if (ret != CMD_SUCCESS) { + dev_err(uc->dev, "write flash row failed ret=%d\n", ret); + return ret; + } + + return 0; +} + +static int ccg_cmd_validate_fw(struct ucsi_ccg *uc, unsigned int fwid) +{ + struct ccg_cmd cmd; + int ret; + + cmd.reg = CCGX_RAB_VALIDATE_FW; + cmd.data = fwid; + cmd.len = 1; + cmd.delay = 500; + + mutex_lock(&uc->lock); + + ret = ccg_send_command(uc, &cmd); + + mutex_unlock(&uc->lock); + + if (ret != CMD_SUCCESS) + return ret; + + return 0; +} + +#define CCG_FW_VERSION_NVIDIA(b) (le16_to_cpu(b) != (('n' << 8) | 'v')) +static bool ccg_check_vendor_version(struct ucsi_ccg *uc, + struct version_format *app, + struct fw_config_table *fw_cfg) +{ + struct device *dev = uc->dev; + + /* Check if the fw build is for supported vendors. + * Add all supported vendors here. + */ + if (CCG_FW_VERSION_NVIDIA(app->build)) { + dev_info(dev, "current fw is not from supported vendor\n"); + return false; + } + + /* Check if the new fw build is for supported vendors + * Add all supported vendors here. + */ + if (CCG_FW_VERSION_NVIDIA(fw_cfg->app.build)) { + dev_info(dev, "new fw is not from supported vendor\n"); + return false; + } + return true; +} + +static bool ccg_check_fw_version(struct ucsi_ccg *uc, const char *fw_name, + struct version_format *app) +{ + const struct firmware *fw = NULL; + struct device *dev = uc->dev; + struct fw_config_table fw_cfg; + u32 cur_version, new_version; + bool is_later = false; + + if (request_firmware(&fw, fw_name, dev) != 0) { + dev_err(dev, "error: Failed to open cyacd file %s\n", fw_name); + return false; + } + + /* + * check if signed fw + * last part of fw image is fw cfg table and signature + */ + if (fw->size < sizeof(fw_cfg) + FW_CFG_TABLE_SIG_SIZE) + goto not_signed_fw; + + memcpy((uint8_t *)&fw_cfg, fw->data + fw->size - + sizeof(fw_cfg) - FW_CFG_TABLE_SIG_SIZE, sizeof(fw_cfg)); + + if (fw_cfg.identity != ('F' | 'W' << 8 | 'C' << 16 | 'T' << 24)) { + dev_info(dev, "not a signed image\n"); + goto not_signed_fw; + } + + /* compare input version with FWCT version */ + cur_version = le16_to_cpu(app->build) | app->patch << 16 | + app->ver << 24; + + new_version = le16_to_cpu(fw_cfg.app.build) | fw_cfg.app.patch << 16 | + fw_cfg.app.ver << 24; + + if (!ccg_check_vendor_version(uc, app, &fw_cfg)) + goto not_supported_version; + + if (new_version > cur_version) + is_later = true; + +not_supported_version: +not_signed_fw: + release_firmware(fw); + return is_later; +} + +static int ccg_fw_update_needed(struct ucsi_ccg *uc, + enum enum_flash_mode *mode) +{ + struct device *dev = uc->dev; + int err; + struct version_info version[3]; + + err = ccg_read(uc, CCGX_RAB_DEVICE_MODE, (u8 *)(&uc->info), + sizeof(uc->info)); + if (err) { + dev_err(dev, "read device mode failed\n"); + return err; + } + + err = ccg_read(uc, CCGX_RAB_READ_ALL_VER, (u8 *)version, + sizeof(version)); + if (err) { + dev_err(dev, "read device mode failed\n"); + return err; + } + + if (memcmp(&version[FW1], "\0\0\0\0\0\0\0\0", + sizeof(struct version_info)) == 0) { + dev_info(dev, "secondary fw is not flashed\n"); + *mode = SECONDARY_BL; + } else if (le16_to_cpu(version[FW1].base.build) < + secondary_fw_min_ver) { + dev_info(dev, "secondary fw version is too low (< %d)\n", + secondary_fw_min_ver); + *mode = SECONDARY; + } else if (memcmp(&version[FW2], "\0\0\0\0\0\0\0\0", + sizeof(struct version_info)) == 0) { + dev_info(dev, "primary fw is not flashed\n"); + *mode = PRIMARY; + } else if (ccg_check_fw_version(uc, ccg_fw_names[PRIMARY], + &version[FW2].app)) { + dev_info(dev, "found primary fw with later version\n"); + *mode = PRIMARY; + } else { + dev_info(dev, "secondary and primary fw are the latest\n"); + *mode = FLASH_NOT_NEEDED; + } + return 0; +} + +static int do_flash(struct ucsi_ccg *uc, enum enum_flash_mode mode) +{ + struct device *dev = uc->dev; + const struct firmware *fw = NULL; + const char *p, *s; + const char *eof; + int err, row, len, line_sz, line_cnt = 0; + unsigned long start_time = jiffies; + struct fw_config_table fw_cfg; + u8 fw_cfg_sig[FW_CFG_TABLE_SIG_SIZE]; + u8 *wr_buf; + + err = request_firmware(&fw, ccg_fw_names[mode], dev); + if (err) { + dev_err(dev, "request %s failed err=%d\n", + ccg_fw_names[mode], err); + return err; + } + + if (((uc->info.mode & CCG_DEVINFO_FWMODE_MASK) >> + CCG_DEVINFO_FWMODE_SHIFT) == FW2) { + err = ccg_cmd_port_control(uc, false); + if (err < 0) + goto release_fw; + err = ccg_cmd_jump_boot_mode(uc, 0); + if (err < 0) + goto release_fw; + } + + eof = fw->data + fw->size; + + /* + * check if signed fw + * last part of fw image is fw cfg table and signature + */ + if (fw->size < sizeof(fw_cfg) + sizeof(fw_cfg_sig)) + goto not_signed_fw; + + memcpy((uint8_t *)&fw_cfg, fw->data + fw->size - + sizeof(fw_cfg) - sizeof(fw_cfg_sig), sizeof(fw_cfg)); + + if (fw_cfg.identity != ('F' | ('W' << 8) | ('C' << 16) | ('T' << 24))) { + dev_info(dev, "not a signed image\n"); + goto not_signed_fw; + } + eof = fw->data + fw->size - sizeof(fw_cfg) - sizeof(fw_cfg_sig); + + memcpy((uint8_t *)&fw_cfg_sig, + fw->data + fw->size - sizeof(fw_cfg_sig), sizeof(fw_cfg_sig)); + + /* flash fw config table and signature first */ + err = ccg_cmd_write_flash_row(uc, 0, (u8 *)&fw_cfg, + FLASH_FWCT1_WR_CMD); + if (err) + goto release_fw; + + err = ccg_cmd_write_flash_row(uc, 0, (u8 *)&fw_cfg + CCG4_ROW_SIZE, + FLASH_FWCT2_WR_CMD); + if (err) + goto release_fw; + + err = ccg_cmd_write_flash_row(uc, 0, &fw_cfg_sig, + FLASH_FWCT_SIG_WR_CMD); + if (err) + goto release_fw; + +not_signed_fw: + wr_buf = kzalloc(CCG4_ROW_SIZE + 4, GFP_KERNEL); + if (!wr_buf) + return -ENOMEM; + + err = ccg_cmd_enter_flashing(uc); + if (err) + goto release_mem; + + /***************************************************************** + * CCG firmware image (.cyacd) file line format + * + * :00rrrrllll[dd....]cc/r/n + * + * :00 header + * rrrr is row number to flash (4 char) + * llll is data len to flash (4 char) + * dd is a data field represents one byte of data (512 char) + * cc is checksum (2 char) + * \r\n newline + * + * Total length: 3 + 4 + 4 + 512 + 2 + 2 = 527 + * + *****************************************************************/ + + p = strnchr(fw->data, fw->size, ':'); + while (p < eof) { + s = strnchr(p + 1, eof - p - 1, ':'); + + if (!s) + s = eof; + + line_sz = s - p; + + if (line_sz != CYACD_LINE_SIZE) { + dev_err(dev, "Bad FW format line_sz=%d\n", line_sz); + err = -EINVAL; + goto release_mem; + } + + if (hex2bin(wr_buf, p + 3, CCG4_ROW_SIZE + 4)) { + err = -EINVAL; + goto release_mem; + } + + row = get_unaligned_be16(wr_buf); + len = get_unaligned_be16(&wr_buf[2]); + + if (len != CCG4_ROW_SIZE) { + err = -EINVAL; + goto release_mem; + } + + err = ccg_cmd_write_flash_row(uc, row, wr_buf + 4, + FLASH_WR_CMD); + if (err) + goto release_mem; + + line_cnt++; + p = s; + } + + dev_info(dev, "total %d row flashed. time: %dms\n", + line_cnt, jiffies_to_msecs(jiffies - start_time)); + + err = ccg_cmd_validate_fw(uc, (mode == PRIMARY) ? FW2 : FW1); + if (err) + dev_err(dev, "%s validation failed err=%d\n", + (mode == PRIMARY) ? "FW2" : "FW1", err); + else + dev_info(dev, "%s validated\n", + (mode == PRIMARY) ? "FW2" : "FW1"); + + err = ccg_cmd_port_control(uc, false); + if (err < 0) + goto release_mem; + + err = ccg_cmd_reset(uc); + if (err < 0) + goto release_mem; + + err = ccg_cmd_port_control(uc, true); + if (err < 0) + goto release_mem; + +release_mem: + kfree(wr_buf); + +release_fw: + release_firmware(fw); + return err; +} + +/******************************************************************************* + * CCG4 has two copies of the firmware in addition to the bootloader. + * If the device is running FW1, FW2 can be updated with the new version. + * Dual firmware mode allows the CCG device to stay in a PD contract and support + * USB PD and Type-C functionality while a firmware update is in progress. + ******************************************************************************/ +static int ccg_fw_update(struct ucsi_ccg *uc, enum enum_flash_mode flash_mode) +{ + int err; + + while (flash_mode != FLASH_NOT_NEEDED) { + err = do_flash(uc, flash_mode); + if (err < 0) + return err; + err = ccg_fw_update_needed(uc, &flash_mode); + if (err < 0) + return err; + } + dev_info(uc->dev, "CCG FW update successful\n"); + + return err; +} + +static int ccg_restart(struct ucsi_ccg *uc) +{ + struct device *dev = uc->dev; + int status; + + status = ucsi_ccg_init(uc); + if (status < 0) { + dev_err(dev, "ucsi_ccg_start fail, err=%d\n", status); + return status; + } + + status = request_threaded_irq(uc->irq, NULL, ccg_irq_handler, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + dev_name(dev), uc); + if (status < 0) { + dev_err(dev, "request_threaded_irq failed - %d\n", status); + return status; + } + + uc->ucsi = ucsi_register_ppm(dev, &uc->ppm); + if (IS_ERR(uc->ucsi)) { + dev_err(uc->dev, "ucsi_register_ppm failed\n"); + return PTR_ERR(uc->ucsi); + } + + return 0; +} + +static void ccg_update_firmware(struct work_struct *work) +{ + struct ucsi_ccg *uc = container_of(work, struct ucsi_ccg, work); + enum enum_flash_mode flash_mode; + int status; + + status = ccg_fw_update_needed(uc, &flash_mode); + if (status < 0) + return; + + if (flash_mode != FLASH_NOT_NEEDED) { + ucsi_unregister_ppm(uc->ucsi); + free_irq(uc->irq, uc); + + ccg_fw_update(uc, flash_mode); + ccg_restart(uc); + } +} + +static ssize_t do_flash_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t n) +{ + struct i2c_client *i2c_cl = to_i2c_client(dev); + struct ucsi_ccg *uc = i2c_get_clientdata(i2c_cl); + unsigned int mode; + + if (kstrtouint(buf, 10, &mode)) + return -EINVAL; + + if (mode) + schedule_work(&uc->work); + + return n; +} + +static ssize_t do_flash_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "[Usage]\n" + "1) copy ccg_boot.cyacd /lib/firmware/\n" + "2) copy ccg_primary.cyacd /lib/firmware/\n" + "3) copy ccg_secondary.cyacd /lib/firmware/\n" + "4) echo 1 > do_flash\n"); +} + +static DEVICE_ATTR_RW(do_flash); + +static struct attribute * +ucsi_ccg_sysfs_attrs[] = { + &dev_attr_do_flash.attr, + NULL, +}; + +static struct attribute_group +ucsi_ccg_attr_group = { + .attrs = ucsi_ccg_sysfs_attrs, +}; + static int ucsi_ccg_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -296,6 +1085,8 @@ static int ucsi_ccg_probe(struct i2c_client *client, uc->ppm.sync = ucsi_ccg_sync; uc->dev = dev; uc->client = client; + mutex_init(&uc->lock); + INIT_WORK(&uc->work, ccg_update_firmware); /* reset ccg device and initialize ucsi */ status = ucsi_ccg_init(uc); @@ -310,15 +1101,21 @@ static int ucsi_ccg_probe(struct i2c_client *client, return status; } - status = devm_request_threaded_irq(dev, client->irq, NULL, - ccg_irq_handler, - IRQF_ONESHOT | IRQF_TRIGGER_HIGH, - dev_name(dev), uc); + uc->port_num = 1; + + if (uc->info.mode & CCG_DEVINFO_PDPORTS_MASK) + uc->port_num++; + + status = request_threaded_irq(client->irq, NULL, ccg_irq_handler, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + dev_name(dev), uc); if (status < 0) { dev_err(uc->dev, "request_threaded_irq failed - %d\n", status); return status; } + uc->irq = client->irq; + uc->ucsi = ucsi_register_ppm(dev, &uc->ppm); if (IS_ERR(uc->ucsi)) { dev_err(uc->dev, "ucsi_register_ppm failed\n"); @@ -335,6 +1132,11 @@ static int ucsi_ccg_probe(struct i2c_client *client, } i2c_set_clientdata(client, uc); + + status = sysfs_create_group(&uc->dev->kobj, &ucsi_ccg_attr_group); + if (status) + dev_err(uc->dev, "cannot create sysfs group: %d\n", status); + return 0; } @@ -342,7 +1144,10 @@ static int ucsi_ccg_remove(struct i2c_client *client) { struct ucsi_ccg *uc = i2c_get_clientdata(client); + cancel_work_sync(&uc->work); ucsi_unregister_ppm(uc->ucsi); + free_irq(uc->irq, uc); + sysfs_remove_group(&uc->dev->kobj, &ucsi_ccg_attr_group); return 0; }