igb: Add support for enabling VFs to PF driver.

This patch adds the support to handle requests from the VF to perform
operations such as completing resets, setting/reading mac address, adding
vlans, adding multicast addresses, setting rlpml, and general
communications between the PF and all VFs.

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>

1 files changed, 77 insertions, 0 deletions

diff --git a/drivers/net/igb/e1000_mbx.h b/drivers/net/igb/e1000_mbx.h
new file mode 100644
index 000000000000..6ec9890a8f7a
--- /dev/null
+++ b/drivers/net/igb/e1000_mbx.h
@@ -0,0 +1,77 @@
+/*******************************************************************************
+
+  Intel(R) Gigabit Ethernet Linux driver
+  Copyright(c) 2007-2009 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _E1000_MBX_H_
+#define _E1000_MBX_H_
+
+#include "e1000_hw.h"
+
+#define E1000_P2VMAILBOX_STS   0x00000001 /* Initiate message send to VF */
+#define E1000_P2VMAILBOX_ACK   0x00000002 /* Ack message recv'd from VF */
+#define E1000_P2VMAILBOX_VFU   0x00000004 /* VF owns the mailbox buffer */
+#define E1000_P2VMAILBOX_PFU   0x00000008 /* PF owns the mailbox buffer */
+#define E1000_P2VMAILBOX_RVFU  0x00000010 /* Reset VFU - used when VF stuck */
+
+#define E1000_MBVFICR_VFREQ_MASK 0x000000FF /* bits for VF messages */
+#define E1000_MBVFICR_VFREQ_VF1  0x00000001 /* bit for VF 1 message */
+#define E1000_MBVFICR_VFACK_MASK 0x00FF0000 /* bits for VF acks */
+#define E1000_MBVFICR_VFACK_VF1  0x00010000 /* bit for VF 1 ack */
+
+#define E1000_VFMAILBOX_SIZE   16 /* 16 32 bit words - 64 bytes */
+
+/* If it's a E1000_VF_* msg then it originates in the VF and is sent to the
+ * PF.  The reverse is true if it is E1000_PF_*.
+ * Message ACK's are the value or'd with 0xF0000000
+ */
+#define E1000_VT_MSGTYPE_ACK      0x80000000  /* Messages below or'd with
+                                               * this are the ACK */
+#define E1000_VT_MSGTYPE_NACK     0x40000000  /* Messages below or'd with
+                                               * this are the NACK */
+#define E1000_VT_MSGTYPE_CTS      0x20000000  /* Indicates that VF is still
+                                                 clear to send requests */
+#define E1000_VT_MSGINFO_SHIFT    16
+/* bits 23:16 are used for exra info for certain messages */
+#define E1000_VT_MSGINFO_MASK     (0xFF << E1000_VT_MSGINFO_SHIFT)
+
+#define E1000_VF_RESET            0x01 /* VF requests reset */
+#define E1000_VF_SET_MAC_ADDR     0x02 /* VF requests PF to set MAC addr */
+#define E1000_VF_SET_MULTICAST    0x03 /* VF requests PF to set MC addr */
+#define E1000_VF_SET_VLAN         0x04 /* VF requests PF to set VLAN */
+#define E1000_VF_SET_LPE          0x05 /* VF requests PF to set VMOLR.LPE */
+
+#define E1000_PF_CONTROL_MSG      0x0100 /* PF control message */
+
+s32 igb_read_mbx(struct e1000_hw *, u32 *, u16, u16);
+s32 igb_write_mbx(struct e1000_hw *, u32 *, u16, u16);
+s32 igb_read_posted_mbx(struct e1000_hw *, u32 *, u16, u16);
+s32 igb_write_posted_mbx(struct e1000_hw *, u32 *, u16, u16);
+s32 igb_check_for_msg(struct e1000_hw *, u16);
+s32 igb_check_for_ack(struct e1000_hw *, u16);
+s32 igb_check_for_rst(struct e1000_hw *, u16);
+s32 igb_init_mbx_params_pf(struct e1000_hw *);
+
+#endif /* _E1000_MBX_H_ */