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From: Shougang Wang <shougangx.wang@intel.com>
To: dev@dpdk.org
Cc: Beilei Xing <beilei.xing@intel.com>,
	Qiming Yang <qiming.yang@intel.com>,
	Shougang Wang <shougangx.wang@intel.com>,
	stable@dpdk.org
Subject: [dpdk-dev] [PATCH v2] net/ice: fix incorrect EEPROM data
Date: Sun, 28 Jun 2020 03:37:36 +0000	[thread overview]
Message-ID: <20200628033736.156247-1-shougangx.wang@intel.com> (raw)
In-Reply-To: <20200508071340.75836-1-shougangx.wang@intel.com>

Kernel driver reads EEPROM data from flash but DPDK reads from
shadow ram. This patch fixes the issue by changing method to get
EEPROM data from flash.

Fixes: 68a1ab82ad74 ("net/ice: speed up to retrieve EEPROM")
Cc: stable@dpdk.org

Signed-off-by: Shougang Wang <shougangx.wang@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 5a89a1955..eaffb6578 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -3956,8 +3956,7 @@ ice_get_eeprom_length(struct rte_eth_dev *dev)
 {
 	struct ice_hw *hw = ICE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
-	/* Convert word count to byte count */
-	return hw->nvm.sr_words << 1;
+	return hw->nvm.flash_size;
 }
 
 static int
@@ -3965,26 +3964,24 @@ ice_get_eeprom(struct rte_eth_dev *dev,
 	       struct rte_dev_eeprom_info *eeprom)
 {
 	struct ice_hw *hw = ICE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	uint16_t *data = eeprom->data;
-	uint16_t first_word, last_word, nwords;
 	enum ice_status status = ICE_SUCCESS;
+	uint8_t *data = eeprom->data;
 
-	first_word = eeprom->offset >> 1;
-	last_word = (eeprom->offset + eeprom->length - 1) >> 1;
-	nwords = last_word - first_word + 1;
+	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
 
-	if (first_word >= hw->nvm.sr_words ||
-	    last_word >= hw->nvm.sr_words) {
-		PMD_DRV_LOG(ERR, "Requested EEPROM bytes out of range.");
-		return -EINVAL;
+	status = ice_acquire_nvm(hw, ICE_RES_READ);
+	if (status) {
+		PMD_DRV_LOG(ERR, "acquire nvm failed.");
+		return -EIO;
 	}
 
-	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
+	status = ice_read_flat_nvm(hw, eeprom->offset, &eeprom->length,
+				   data, false);
+
+	ice_release_nvm(hw);
 
-	status = ice_read_sr_buf(hw, first_word, &nwords, data);
 	if (status) {
 		PMD_DRV_LOG(ERR, "EEPROM read failed.");
-		eeprom->length = sizeof(uint16_t) * nwords;
 		return -EIO;
 	}
 
-- 
2.17.1


  parent reply	other threads:[~2020-06-28  3:45 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-08  7:13 [dpdk-dev] [PATCH] " Shougang Wang
2020-05-08  7:20 ` Yang, Qiming
2020-06-28  3:37 ` Shougang Wang [this message]
2020-06-30 14:23   ` [dpdk-dev] [PATCH v2] " Zhang, Qi Z
2020-07-01  2:46   ` Jiang, YuX

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