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Alexander Duyckdavem330
Alexander Duyck
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davem330
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igbvf: add new driver to support 82576 virtual functions
This adds an igbvf driver to handle virtual functions provided by the igb driver when SR-IOV has been enabled. A virtual function is a lightweight pci-e function that supports a single queue and shares resources with the 82576 physical function contained within the igb driver. To spawn virtual functions from the igb driver all that is needed is to enable CONFIG_PCI_IOV and have an 82576 Ethernet adapter on a system that supports SR-IOV in the BIOS. The virtual functions will appear after the interface is loaded. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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‎drivers/net/Kconfig

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@@ -2058,6 +2058,27 @@ config IGB_DCA
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driver. DCA is a method for warming the CPU cache before data
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is used, with the intent of lessening the impact of cache misses.
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config IGBVF
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tristate "Intel(R) 82576 Virtual Function Ethernet support"
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depends on PCI
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---help---
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This driver supports Intel(R) 82576 virtual functions. For more
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information on how to identify your adapter, go to the Adapter &
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Driver ID Guide at:
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<http://support.intel.com/support/network/adapter/pro100/21397.htm>
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For general information and support, go to the Intel support
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website at:
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<http://support.intel.com>
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More specific information on configuring the driver is in
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<file:Documentation/networking/e1000.txt>.
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To compile this driver as a module, choose M here. The module
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will be called igbvf.
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source "drivers/net/ixp2000/Kconfig"
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config MYRI_SBUS

‎drivers/net/Makefile

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@@ -6,6 +6,7 @@ obj-$(CONFIG_E1000) += e1000/
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obj-$(CONFIG_E1000E) += e1000e/
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obj-$(CONFIG_IBM_NEW_EMAC) += ibm_newemac/
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obj-$(CONFIG_IGB) += igb/
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obj-$(CONFIG_IGBVF) += igbvf/
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obj-$(CONFIG_IXGBE) += ixgbe/
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obj-$(CONFIG_IXGB) += ixgb/
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obj-$(CONFIG_IP1000) += ipg.o

‎drivers/net/igbvf/Makefile

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################################################################################
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#
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# Intel(R) 82576 Virtual Function Linux driver
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# Copyright(c) 2009 Intel Corporation.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms and conditions of the GNU General Public License,
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# version 2, as published by the Free Software Foundation.
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#
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# This program is distributed in the hope it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# The full GNU General Public License is included in this distribution in
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# the file called "COPYING".
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#
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# Contact Information:
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# e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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#
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################################################################################
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#
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# Makefile for the Intel(R) 82576 VF ethernet driver
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#
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obj-$(CONFIG_IGBVF) += igbvf.o
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igbvf-objs := vf.o \
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mbx.o \
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ethtool.o \
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netdev.o
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‎drivers/net/igbvf/defines.h

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/*******************************************************************************
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Intel(R) 82576 Virtual Function Linux driver
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Copyright(c) 1999 - 2009 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#ifndef _E1000_DEFINES_H_
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#define _E1000_DEFINES_H_
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/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
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#define REQ_TX_DESCRIPTOR_MULTIPLE 8
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#define REQ_RX_DESCRIPTOR_MULTIPLE 8
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/* IVAR valid bit */
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#define E1000_IVAR_VALID 0x80
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/* Receive Descriptor bit definitions */
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#define E1000_RXD_STAT_DD 0x01 /* Descriptor Done */
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#define E1000_RXD_STAT_EOP 0x02 /* End of Packet */
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#define E1000_RXD_STAT_IXSM 0x04 /* Ignore checksum */
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#define E1000_RXD_STAT_VP 0x08 /* IEEE VLAN Packet */
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#define E1000_RXD_STAT_UDPCS 0x10 /* UDP xsum calculated */
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#define E1000_RXD_STAT_TCPCS 0x20 /* TCP xsum calculated */
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#define E1000_RXD_STAT_IPCS 0x40 /* IP xsum calculated */
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#define E1000_RXD_ERR_SE 0x02 /* Symbol Error */
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#define E1000_RXD_SPC_VLAN_MASK 0x0FFF /* VLAN ID is in lower 12 bits */
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#define E1000_RXDEXT_STATERR_CE 0x01000000
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#define E1000_RXDEXT_STATERR_SE 0x02000000
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#define E1000_RXDEXT_STATERR_SEQ 0x04000000
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#define E1000_RXDEXT_STATERR_CXE 0x10000000
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#define E1000_RXDEXT_STATERR_TCPE 0x20000000
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#define E1000_RXDEXT_STATERR_IPE 0x40000000
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#define E1000_RXDEXT_STATERR_RXE 0x80000000
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/* Same mask, but for extended and packet split descriptors */
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#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
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E1000_RXDEXT_STATERR_CE | \
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E1000_RXDEXT_STATERR_SE | \
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E1000_RXDEXT_STATERR_SEQ | \
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E1000_RXDEXT_STATERR_CXE | \
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E1000_RXDEXT_STATERR_RXE)
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/* Device Control */
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#define E1000_CTRL_RST 0x04000000 /* Global reset */
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/* Device Status */
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#define E1000_STATUS_FD 0x00000001 /* Full duplex.0=half,1=full */
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#define E1000_STATUS_LU 0x00000002 /* Link up.0=no,1=link */
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#define E1000_STATUS_TXOFF 0x00000010 /* transmission paused */
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#define E1000_STATUS_SPEED_10 0x00000000 /* Speed 10Mb/s */
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#define E1000_STATUS_SPEED_100 0x00000040 /* Speed 100Mb/s */
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#define E1000_STATUS_SPEED_1000 0x00000080 /* Speed 1000Mb/s */
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#define SPEED_10 10
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#define SPEED_100 100
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#define SPEED_1000 1000
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#define HALF_DUPLEX 1
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#define FULL_DUPLEX 2
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/* Transmit Descriptor bit definitions */
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#define E1000_TXD_POPTS_IXSM 0x01 /* Insert IP checksum */
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#define E1000_TXD_POPTS_TXSM 0x02 /* Insert TCP/UDP checksum */
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#define E1000_TXD_CMD_DEXT 0x20000000 /* Descriptor extension (0 = legacy) */
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#define E1000_TXD_STAT_DD 0x00000001 /* Descriptor Done */
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#define MAX_JUMBO_FRAME_SIZE 0x3F00
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/* 802.1q VLAN Packet Size */
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#define VLAN_TAG_SIZE 4 /* 802.3ac tag (not DMA'd) */
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/* Error Codes */
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#define E1000_SUCCESS 0
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#define E1000_ERR_CONFIG 3
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#define E1000_ERR_MAC_INIT 5
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#define E1000_ERR_MBX 15
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#ifndef ETH_ADDR_LEN
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#define ETH_ADDR_LEN 6
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#endif
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/* SRRCTL bit definitions */
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#define E1000_SRRCTL_BSIZEPKT_SHIFT 10 /* Shift _right_ */
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#define E1000_SRRCTL_BSIZEHDRSIZE_MASK 0x00000F00
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#define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT 2 /* Shift _left_ */
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#define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF 0x02000000
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#define E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS 0x0A000000
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#define E1000_SRRCTL_DESCTYPE_MASK 0x0E000000
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#define E1000_SRRCTL_DROP_EN 0x80000000
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#define E1000_SRRCTL_BSIZEPKT_MASK 0x0000007F
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#define E1000_SRRCTL_BSIZEHDR_MASK 0x00003F00
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/* Additional Descriptor Control definitions */
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#define E1000_TXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Tx Queue */
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#define E1000_RXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Rx Queue */
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/* Direct Cache Access (DCA) definitions */
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#define E1000_DCA_TXCTRL_TX_WB_RO_EN (1 << 11) /* Tx Desc writeback RO bit */
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#define E1000_VF_INIT_TIMEOUT 200 /* Number of retries to clear RSTI */
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#endif /* _E1000_DEFINES_H_ */

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