The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/netmap_virt.h

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    1 /*
    2  * Copyright (C) 2013-2016 Luigi Rizzo
    3  * Copyright (C) 2013-2016 Giuseppe Lettieri
    4  * Copyright (C) 2013-2018 Vincenzo Maffione
    5  * Copyright (C) 2015 Stefano Garzarella
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  *   1. Redistributions of source code must retain the above copyright
   12  *      notice, this list of conditions and the following disclaimer.
   13  *   2. Redistributions in binary form must reproduce the above copyright
   14  *      notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef NETMAP_VIRT_H
   33 #define NETMAP_VIRT_H
   34 
   35 /*
   36  * Register offsets and other macros for the ptnetmap paravirtual devices:
   37  *   ptnetmap-memdev: device used to expose memory into the guest
   38  *   ptnet: paravirtualized NIC exposing a netmap port in the guest
   39  *
   40  * These macros are used in the hypervisor frontend (QEMU, bhyve) and in the
   41  * guest device driver.
   42  */
   43 
   44 /* PCI identifiers and PCI BARs for ptnetmap-memdev and ptnet. */
   45 #define PTNETMAP_MEMDEV_NAME            "ptnetmap-memdev"
   46 #define PTNETMAP_PCI_VENDOR_ID          0x1b36  /* QEMU virtual devices */
   47 #define PTNETMAP_PCI_DEVICE_ID          0xcccc  /* memory device */
   48 #define PTNETMAP_PCI_NETIF_ID           0xcccd  /* ptnet network interface */
   49 #define PTNETMAP_IO_PCI_BAR             0
   50 #define PTNETMAP_MEM_PCI_BAR            1
   51 #define PTNETMAP_MSIX_PCI_BAR           2
   52 
   53 /* Device registers for ptnetmap-memdev */
   54 #define PTNET_MDEV_IO_MEMSIZE_LO        0       /* netmap memory size (low) */
   55 #define PTNET_MDEV_IO_MEMSIZE_HI        4       /* netmap_memory_size (high) */
   56 #define PTNET_MDEV_IO_MEMID             8       /* memory allocator ID in the host */
   57 #define PTNET_MDEV_IO_IF_POOL_OFS       64
   58 #define PTNET_MDEV_IO_IF_POOL_OBJNUM    68
   59 #define PTNET_MDEV_IO_IF_POOL_OBJSZ     72
   60 #define PTNET_MDEV_IO_RING_POOL_OFS     76
   61 #define PTNET_MDEV_IO_RING_POOL_OBJNUM  80
   62 #define PTNET_MDEV_IO_RING_POOL_OBJSZ   84
   63 #define PTNET_MDEV_IO_BUF_POOL_OFS      88
   64 #define PTNET_MDEV_IO_BUF_POOL_OBJNUM   92
   65 #define PTNET_MDEV_IO_BUF_POOL_OBJSZ    96
   66 #define PTNET_MDEV_IO_END               100
   67 
   68 /* ptnetmap features */
   69 #define PTNETMAP_F_VNET_HDR        1
   70 
   71 /* Device registers for the ptnet network device. */
   72 #define PTNET_IO_PTFEAT         0
   73 #define PTNET_IO_PTCTL          4
   74 #define PTNET_IO_MAC_LO         8
   75 #define PTNET_IO_MAC_HI         12
   76 #define PTNET_IO_CSBBAH         16 /* deprecated */
   77 #define PTNET_IO_CSBBAL         20 /* deprecated */
   78 #define PTNET_IO_NIFP_OFS       24
   79 #define PTNET_IO_NUM_TX_RINGS   28
   80 #define PTNET_IO_NUM_RX_RINGS   32
   81 #define PTNET_IO_NUM_TX_SLOTS   36
   82 #define PTNET_IO_NUM_RX_SLOTS   40
   83 #define PTNET_IO_VNET_HDR_LEN   44
   84 #define PTNET_IO_HOSTMEMID      48
   85 #define PTNET_IO_CSB_GH_BAH     52
   86 #define PTNET_IO_CSB_GH_BAL     56
   87 #define PTNET_IO_CSB_HG_BAH     60
   88 #define PTNET_IO_CSB_HG_BAL     64
   89 #define PTNET_IO_END            68
   90 #define PTNET_IO_KICK_BASE      128
   91 #define PTNET_IO_MASK           0xff
   92 
   93 /* ptnet control commands (values for PTCTL register):
   94  *   - CREATE starts the host sync-kloop
   95  *   - DELETE stops the host sync-kloop
   96  */
   97 #define PTNETMAP_PTCTL_CREATE           1
   98 #define PTNETMAP_PTCTL_DELETE           2
   99 
  100 #endif /* NETMAP_VIRT_H */

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