github.com/bugraaydogar/snapd@v0.0.0-20210315170335-8c70bb858939/interfaces/builtin/allegro_vcu.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2021 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package builtin
    21  
    22  // https://www.xilinx.com/support/documentation/ip_documentation/vcu/v1_2/pg252-vcu.pdf
    23  // https://github.com/Xilinx/vcu-modules/
    24  const allegroVcuSummary = `allows access to Allegro Video Code Unit`
    25  
    26  // Xilinx offers IP for their devices to decode/encode video streams, by
    27  // using /dev/allegroDecodeIP and /dev/allegroIP devices.
    28  // These operations should be considered privileged since the driver
    29  // assumes trusted input, therefore require manual connection.
    30  const allegroVcuBaseDeclarationSlots = `
    31    allegro-vcu:
    32      allow-installation:
    33        slot-snap-type:
    34          - core
    35      deny-auto-connection: true
    36  `
    37  
    38  const allegroVcuConnectedPlugAppArmor = `
    39  # Description: Can access the Allegro Video Core Unit, using a kernel
    40  # module which directly controls hardware on the device.
    41  
    42  /dev/allegroDecodeIP rw,
    43  /dev/allegroIP rw,
    44  
    45  /dev/dmaproxy rw,
    46  `
    47  
    48  var allegroVcuConnectedPlugUDev = []string{
    49  	`SUBSYSTEM=="allegro_decode_class", KERNEL=="allegroDecodeIP"`,
    50  	`SUBSYSTEM=="allegro_encode_class", KERNEL=="allegroIP"`,
    51  	`SUBSYSTEM=="char", KERNEL=="dmaproxy"`,
    52  }
    53  
    54  func init() {
    55  	registerIface(&commonInterface{
    56  		name:                  "allegro-vcu",
    57  		summary:               allegroVcuSummary,
    58  		implicitOnCore:        true,
    59  		implicitOnClassic:     true,
    60  		baseDeclarationSlots:  allegroVcuBaseDeclarationSlots,
    61  		connectedPlugAppArmor: allegroVcuConnectedPlugAppArmor,
    62  		connectedPlugUDev:     allegroVcuConnectedPlugUDev,
    63  	})
    64  }