From patchwork Fri Apr 13 16:35:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shweta Choudaha X-Patchwork-Id: 38062 X-Patchwork-Delegate: helin.zhang@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D3C081C6C9; Fri, 13 Apr 2018 18:35:13 +0200 (CEST) Received: from mail-wr0-f196.google.com (mail-wr0-f196.google.com [209.85.128.196]) by dpdk.org (Postfix) with ESMTP id 8B7EE1C685 for ; Fri, 13 Apr 2018 18:35:12 +0200 (CEST) Received: by mail-wr0-f196.google.com with SMTP id u46so9650379wrc.11 for ; Fri, 13 Apr 2018 09:35:12 -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=3rpv87VXNDNJoP3byPdBXZ7Xb0Pn4haa4KR47cpn9b4=; b=Tly4zc3a5mDNOpI9G2fcxGGhpfIbRZoFyKaOnFVkaGrPIwroylS1gq01qROnjiFIeP DLRhzR7+T/csbkOovR3k7fQ6BtFBz/ci4ffrSA2zlOQX8t9YAYbzArpU5Aw3y/VrXjEj UkZrUxw82xtwKfipc1+4gwDKCfosb9Q+r/4EsoBymMHNgwmq8gMqRcjhEHeWl+x4Girl RoIF+J+PYO+FvRI6JmMK2HxcIrLKkMgQwNe7N3LkfeXh87O8etG2pdKlJVZScZhSeEJa kdHrhXVIOl7c/QlcuO+koIVX15GpJLJvTIxGiqbifE8klklAVZTu9vKmqqkYiSiHX1ot 5pyA== 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=3rpv87VXNDNJoP3byPdBXZ7Xb0Pn4haa4KR47cpn9b4=; b=s+NNZxxAOg0dAXHNiXsTD6aj2kXlrlESB/YdRvmDD8zv1NUyzxJcCo+KVO9zkl8cqq k9gM5xkIToQO3z1dxjrNlSGpp3TpAStAlJzorcheNH74Nc2G3K8TnVMEKhFCktK/K49A Msg+yzlFg4RKNK5S1d9e/hl+CRQDUzW6+7NNrE0BsF/RfIHwuTe5XRHxePLJ5mPxJP2M XaFv4fvwCKBhMcc2qeGfUtSrY70/PIOC3yck54sFnWmjuOoxHZlJl1vj0zCJ7ssKudZS 8kHIuugPzjpw2Ho3PfPSS/vfRoOQ1R2f52SWLj6gppSuRg3rYqRfEEjMKRPZujtn87aZ D7nA== X-Gm-Message-State: ALQs6tAoLR3HzO2Ppq0iQmZa1zB5kGVD/jXIdX/13qMpPbcT3oAOiW80 Jc3gTUC6DoVXezi2r2PKQVIL+Q== X-Google-Smtp-Source: AIpwx4/G3pN+Ux6aFFEEh2V1iA7e6cJmWvXTfI/A/otpT0wvdqlyw11GcWSFuS+G5KXBGVRFf1GxeQ== X-Received: by 10.223.186.133 with SMTP id p5mr4289149wrg.196.1523637311886; Fri, 13 Apr 2018 09:35:11 -0700 (PDT) Received: from schoudah-dev.vyatta.net ([137.221.143.78]) by smtp.gmail.com with ESMTPSA id d18sm4427800wre.5.2018.04.13.09.35.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 13 Apr 2018 09:35:11 -0700 (PDT) From: Shweta Choudaha To: dev@dpdk.org Cc: wenzhuo.lu@intel.com, konstantin.ananyev@intel.com, helin.zhang@intel.com, ferruh.yigit@intel.com, shweta.choudaha@att.com Date: Fri, 13 Apr 2018 17:35:04 +0100 Message-Id: <20180413163504.65546-1-shweta.choudaha@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180411135935.61232-1-shweta.choudaha@gmail.com> References: <20180411135935.61232-1-shweta.choudaha@gmail.com> Subject: [dpdk-dev] [PATCH v4] net/ixgbe: add access and locking APIs for MDIO X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Shweta Choudaha Add ixgbe MDIO lock/unlock and access APIs to read and write registers using specific device address. This provides MDIO access to any devices that are not associated with the autoprobed PHY.Export these APIs via the map file Signed-off-by: Shweta Choudaha Reviewed-by: Chas Williams Reviewed-by: Luca Boccassi Acked-by: Qi Zhang --- drivers/net/ixgbe/rte_pmd_ixgbe.c | 202 ++++++++++++++++++++++++++++ drivers/net/ixgbe/rte_pmd_ixgbe.h | 71 ++++++++++ drivers/net/ixgbe/rte_pmd_ixgbe_version.map | 9 ++ 3 files changed, 282 insertions(+) diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.c b/drivers/net/ixgbe/rte_pmd_ixgbe.c index d8ca8ca31..974c15dd8 100644 --- a/drivers/net/ixgbe/rte_pmd_ixgbe.c +++ b/drivers/net/ixgbe/rte_pmd_ixgbe.c @@ -5,6 +5,7 @@ #include #include "base/ixgbe_api.h" +#include "base/ixgbe_x550.h" #include "ixgbe_ethdev.h" #include "rte_pmd_ixgbe.h" @@ -1012,3 +1013,204 @@ rte_pmd_ixgbe_bypass_wd_reset(uint16_t port_id) return ixgbe_bypass_wd_reset(dev); } #endif + +/** + * rte_pmd_ixgbe_acquire_swfw - Acquire SWFW semaphore + * @hw: pointer to hardware structure + * @mask: Mask to specify which semaphore to acquire + * + * Acquires the SWFW semaphore and get the shared phy token as needed + */ +STATIC s32 rte_pmd_ixgbe_acquire_swfw(struct ixgbe_hw *hw, u32 mask) +{ + int retries = FW_PHY_TOKEN_RETRIES; + s32 status = IXGBE_SUCCESS; + + while (--retries) { + status = ixgbe_acquire_swfw_semaphore(hw, mask); + if (status) { + PMD_DRV_LOG(ERR, "Get SWFW sem failed, Status = %d\n", + status); + return status; + } + status = ixgbe_get_phy_token(hw); + if (status == IXGBE_SUCCESS) + return IXGBE_SUCCESS; + + if (status == IXGBE_ERR_TOKEN_RETRY) + PMD_DRV_LOG(ERR, "Get PHY token failed, Status = %d\n", + status); + + ixgbe_release_swfw_semaphore(hw, mask); + if (status != IXGBE_ERR_TOKEN_RETRY) { + PMD_DRV_LOG(ERR, + "Retry get PHY token failed, Status=%d\n", + status); + return status; + } + } + PMD_DRV_LOG(ERR, "swfw acquisition retries failed!: PHY ID = 0x%08X\n", + hw->phy.id); + return status; +} + +/** + * rte_pmd_ixgbe_release_swfw_sync - Release SWFW semaphore + * @hw: pointer to hardware structure + * @mask: Mask to specify which semaphore to release + * + * Releases the SWFW semaphore and puts the shared phy token as needed + */ +STATIC void rte_pmd_ixgbe_release_swfw(struct ixgbe_hw *hw, u32 mask) +{ + ixgbe_put_phy_token(hw); + ixgbe_release_swfw_semaphore(hw, mask); +} + +int __rte_experimental +rte_pmd_ixgbe_mdio_lock(uint16_t port) +{ + struct ixgbe_hw *hw; + struct rte_eth_dev *dev; + u32 swfw_mask; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + dev = &rte_eth_devices[port]; + if (!is_ixgbe_supported(dev)) + return -ENOTSUP; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + if (!hw) + return -ENOTSUP; + + if (hw->bus.lan_id) + swfw_mask = IXGBE_GSSR_PHY1_SM; + else + swfw_mask = IXGBE_GSSR_PHY0_SM; + + if (rte_pmd_ixgbe_acquire_swfw(hw, swfw_mask)) + return IXGBE_ERR_SWFW_SYNC; + + return IXGBE_SUCCESS; +} + +int __rte_experimental +rte_pmd_ixgbe_mdio_unlock(uint16_t port) +{ + struct rte_eth_dev *dev; + struct ixgbe_hw *hw; + u32 swfw_mask; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + + dev = &rte_eth_devices[port]; + if (!is_ixgbe_supported(dev)) + return -ENOTSUP; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + if (!hw) + return -ENOTSUP; + + if (hw->bus.lan_id) + swfw_mask = IXGBE_GSSR_PHY1_SM; + else + swfw_mask = IXGBE_GSSR_PHY0_SM; + + rte_pmd_ixgbe_release_swfw(hw, swfw_mask); + + return IXGBE_SUCCESS; +} + +int __rte_experimental +rte_pmd_ixgbe_mdio_unlocked_read(uint16_t port, uint32_t reg_addr, + uint32_t dev_type, uint16_t *phy_data) +{ + struct ixgbe_hw *hw; + struct rte_eth_dev *dev; + u32 i, data, command; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + dev = &rte_eth_devices[port]; + if (!is_ixgbe_supported(dev)) + return -ENOTSUP; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + if (!hw) + return -ENOTSUP; + + /* Setup and write the read command */ + command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) | + (dev_type << IXGBE_MSCA_PHY_ADDR_SHIFT) | + IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_READ_AUTOINC | + IXGBE_MSCA_MDI_COMMAND; + + IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); + + /* Check every 10 usec to see if the access completed. + * The MDI Command bit will clear when the operation is + * complete + */ + for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { + usec_delay(10); + + command = IXGBE_READ_REG(hw, IXGBE_MSCA); + if (!(command & IXGBE_MSCA_MDI_COMMAND)) + break; + } + if (command & IXGBE_MSCA_MDI_COMMAND) + return IXGBE_ERR_PHY; + + /* Read operation is complete. Get the data from MSRWD */ + data = IXGBE_READ_REG(hw, IXGBE_MSRWD); + data >>= IXGBE_MSRWD_READ_DATA_SHIFT; + *phy_data = (u16)data; + + return 0; +} + +int __rte_experimental +rte_pmd_ixgbe_mdio_unlocked_write(uint16_t port, uint32_t reg_addr, + uint32_t dev_type, uint16_t phy_data) +{ + struct ixgbe_hw *hw; + u32 i, command; + struct rte_eth_dev *dev; + + RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV); + dev = &rte_eth_devices[port]; + if (!is_ixgbe_supported(dev)) + return -ENOTSUP; + + hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + if (!hw) + return -ENOTSUP; + + /* Put the data in the MDI single read and write data register*/ + IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data); + + /* Setup and write the write command */ + command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) | + (dev_type << IXGBE_MSCA_PHY_ADDR_SHIFT) | + IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_WRITE | + IXGBE_MSCA_MDI_COMMAND; + + IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); + + /* Check every 10 usec to see if the access completed. + * The MDI Command bit will clear when the operation is + * complete + */ + for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { + usec_delay(10); + + command = IXGBE_READ_REG(hw, IXGBE_MSCA); + if (!(command & IXGBE_MSCA_MDI_COMMAND)) + break; + } + if (command & IXGBE_MSCA_MDI_COMMAND) { + ERROR_REPORT1(IXGBE_ERROR_POLLING, + "PHY write cmd didn't complete\n"); + return IXGBE_ERR_PHY; + } + return 0; +} diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.h b/drivers/net/ixgbe/rte_pmd_ixgbe.h index 11a9f334b..12c64b97f 100644 --- a/drivers/net/ixgbe/rte_pmd_ixgbe.h +++ b/drivers/net/ixgbe/rte_pmd_ixgbe.h @@ -573,6 +573,77 @@ int rte_pmd_ixgbe_bypass_wd_timeout_show(uint16_t port, uint32_t *wd_timeout); */ int rte_pmd_ixgbe_bypass_wd_reset(uint16_t port); +/** + * Acquire swfw semaphore lock for MDIO access + * + * @param port + * The port identifier of the Ethernet device. + * @return + * - (0) if successful. + * - (-ENOTSUP) if hardware doesn't support. + * - (-ENODEV) if *port* invalid. + * - (IXGBE_ERR_SWFW_SYNC) If sw/fw semaphore acquisition failed + */ +int __rte_experimental +rte_pmd_ixgbe_mdio_lock(uint16_t port); + +/** + * Release swfw semaphore lock used for MDIO access + * + * @param port + * The port identifier of the Ethernet device. + * @return + * - (0) if successful. + * - (-ENOTSUP) if hardware doesn't support. + * - (-ENODEV) if *port* invalid. + */ +int __rte_experimental +rte_pmd_ixgbe_mdio_unlock(uint16_t port); + +/** + * Read PHY register using MDIO without MDIO lock + * The lock must be taken separately before calling this + * API + * @param port + * The port identifier of the Ethernet device. + * @param reg_addr + * 32 bit PHY Register + * @param dev_type + * Used to define device base address + * @param phy_data + * Pointer for reading PHY register data + * @return + * - (0) if successful. + * - (-ENOTSUP) if hardware doesn't support. + * - (-ENODEV) if *port* invalid. + * - (IXGBE_ERR_PHY) If PHY read command failed + */ +int __rte_experimental +rte_pmd_ixgbe_mdio_unlocked_read(uint16_t port, uint32_t reg_addr, + uint32_t dev_type, uint16_t *phy_data); + +/** + * Write data to PHY register using without MDIO lock + * The lock must be taken separately before calling this + * API + * + * @param port + * The port identifier of the Ethernet device. + * @param reg_addr + * 32 bit PHY Register + * @param dev_type + * Used to define device base address + * @param phy_data + * Data to write to PHY register + * @return + * - (0) if successful. + * - (-ENOTSUP) if hardware doesn't support. + * - (-ENODEV) if *port* invalid. + * - (IXGBE_ERR_PHY) If PHY read command failed + */ +int __rte_experimental +rte_pmd_ixgbe_mdio_unlocked_write(uint16_t port, uint32_t reg_addr, + uint32_t dev_type, uint16_t phy_data); /** * Response sent back to ixgbe driver from user app after callback diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe_version.map b/drivers/net/ixgbe/rte_pmd_ixgbe_version.map index bf776742c..8a60574ad 100644 --- a/drivers/net/ixgbe/rte_pmd_ixgbe_version.map +++ b/drivers/net/ixgbe/rte_pmd_ixgbe_version.map @@ -52,3 +52,12 @@ DPDK_17.08 { rte_pmd_ixgbe_bypass_wd_timeout_show; rte_pmd_ixgbe_bypass_wd_timeout_store; } DPDK_17.05; + +EXPERIMENTAL { + global: + + rte_pmd_ixgbe_mdio_lock; + rte_pmd_ixgbe_mdio_unlock; + rte_pmd_ixgbe_mdio_unlocked_read; + rte_pmd_ixgbe_mdio_unlocked_write; +} DPDK_18.05;