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* [dpdk-stable] [PATCH] igb_uio: prevent reset for a list of devices
@ 2017-11-03 22:38 Ferruh Yigit
  2017-11-04  0:56 ` Mody, Rasesh
  2017-11-06 18:48 ` [dpdk-stable] [PATCH v2] " Ferruh Yigit
  0 siblings, 2 replies; 13+ messages in thread
From: Ferruh Yigit @ 2017-11-03 22:38 UTC (permalink / raw)
  To: Thomas Monjalon
  Cc: dev, Ferruh Yigit, stable, Jianfeng Tan, Jingjing Wu,
	Shijith Thotton, Gregory Etelson, Harish Patil, George Prekas,
	Sergio Gonzalez Monroy, Rasesh Mody, Lee Roberts

Some devices are having problem on device reset that happens during DPDK
application exit [1].

Create a static list of devices and exclude them from device reset.

[1]
http://dpdk.org/ml/archives/dev/2017-November/080927.html

Fixes: b58eedfc7dd5 ("igb_uio: issue FLR during open and release of device file")
Cc: stable@dpdk.org

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
Cc: Jianfeng Tan <jianfeng.tan@intel.com>
Cc: Jingjing Wu <jingjing.wu@intel.com>
Cc: Shijith Thotton <shijith.thotton@caviumnetworks.com>
Cc: Gregory Etelson <gregory@weka.io>
Cc: Harish Patil <harish.patil@cavium.com>
Cc: George Prekas <george.prekas@epfl.ch>
Cc: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
Cc: Rasesh Mody <rasesh.mody@cavium.com>
Cc: Lee Roberts <lee.roberts@hpe.com>

This is alternative approach to
http://dpdk.org/dev/patchwork/patch/31144/
---
 lib/librte_eal/linuxapp/igb_uio/compat.h  | 19 ++++++++++++++++++-
 lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 11 ++++++++++-
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/lib/librte_eal/linuxapp/igb_uio/compat.h b/lib/librte_eal/linuxapp/igb_uio/compat.h
index 30508f35c..5d7223124 100644
--- a/lib/librte_eal/linuxapp/igb_uio/compat.h
+++ b/lib/librte_eal/linuxapp/igb_uio/compat.h
@@ -133,4 +133,21 @@ static bool pci_check_and_mask_intx(struct pci_dev *pdev)
 #define HAVE_PCI_MSI_MASK_IRQ 1
 #endif
 
-
+#define BROADCOM_PCI_VENDOR_ID 0x14E4
+static const struct pci_device_id no_reset_pci_tbl[] = {
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x168a) }, /* 57800 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x164f) }, /* 57711 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x168e) }, /* 57810 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x163d) }, /* 57811 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x168d) }, /* 57840_OBS */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16a1) }, /* 57840_4_10 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16a2) }, /* 57840_2_20 */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16ae) }, /* 57810_MF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x163e) }, /* 57811_MF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16a4) }, /* 57840_MF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16a9) }, /* 57800_VF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16af) }, /* 57810_VF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x163f) }, /* 57811_VF */
+	{ PCI_DEVICE(BROADCOM_PCI_VENDOR_ID, 0x16ad) }, /* 57840_VF */
+	{ 0 },
+};
diff --git a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
index fd320d87d..b0d92b51e 100644
--- a/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
+++ b/lib/librte_eal/linuxapp/igb_uio/igb_uio.c
@@ -348,6 +348,14 @@ igbuio_pci_open(struct uio_info *info, struct inode *inode)
 	return 0;
 }
 
+static int is_device_excluded_from_reset(struct pci_dev *pdev)
+{
+	if (pci_match_id(no_reset_pci_tbl, pdev))
+		return 1;
+
+	return 0;
+}
+
 static int
 igbuio_pci_release(struct uio_info *info, struct inode *inode)
 {
@@ -360,7 +368,8 @@ igbuio_pci_release(struct uio_info *info, struct inode *inode)
 	/* stop the device from further DMA */
 	pci_clear_master(dev);
 
-	pci_reset_function(dev);
+	if (!is_device_excluded_from_reset(dev))
+		pci_reset_function(dev);
 
 	return 0;
 }
-- 
2.13.6

^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2017-11-15 16:30 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-03 22:38 [dpdk-stable] [PATCH] igb_uio: prevent reset for a list of devices Ferruh Yigit
2017-11-04  0:56 ` Mody, Rasesh
2017-11-06 18:48 ` [dpdk-stable] [PATCH v2] " Ferruh Yigit
2017-11-06 23:55   ` Thomas Monjalon
2017-11-07 11:50     ` [dpdk-stable] [dpdk-dev] " Chas Williams
2017-11-07 13:13       ` Stephen Hemminger
2017-11-07 18:14         ` Chas Williams
2017-11-09 17:20       ` [dpdk-stable] ugb_uio: r3.8xlarge bind failure Gregory Etelson
2017-11-10  1:42         ` Ferruh Yigit
2017-11-10  2:11           ` Ferruh Yigit
2017-11-10  6:36           ` Gregory Etelson
2017-11-15 15:44             ` Ferruh Yigit
2017-11-15 16:30               ` Gregory Etelson

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