cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

xlnx_dpdma.h (2704B)

      1/*
      2 * xlnx_dpdma.h
      3 *
      4 *  Copyright (C) 2015 : GreenSocs Ltd
      5 *      http://www.greensocs.com/ , email: info@greensocs.com
      6 *
      7 *  Developed by :
      8 *  Frederic Konrad   <fred.konrad@greensocs.com>
      9 *
     10 * This program is free software; you can redistribute it and/or modify
     11 * it under the terms of the GNU General Public License as published by
     12 * the Free Software Foundation, either version 2 of the License, or
     13 * (at your option) any later version.
     14 *
     15 * This program is distributed in the hope that it will be useful,
     16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18 * GNU General Public License for more details.
     19 *
     20 * You should have received a copy of the GNU General Public License along
     21 * with this program; if not, see <http://www.gnu.org/licenses/>.
     22 *
     23 */
     24
     25#ifndef XLNX_DPDMA_H
     26#define XLNX_DPDMA_H
     27
     28#include "hw/sysbus.h"
     29#include "ui/console.h"
     30#include "sysemu/dma.h"
     31#include "qom/object.h"
     32
     33#define XLNX_DPDMA_REG_ARRAY_SIZE (0x1000 >> 2)
     34
     35struct XlnxDPDMAState {
     36    /*< private >*/
     37    SysBusDevice parent_obj;
     38    /*< public >*/
     39    MemoryRegion iomem;
     40    uint32_t registers[XLNX_DPDMA_REG_ARRAY_SIZE];
     41    uint8_t *data[6];
     42    bool operation_finished[6];
     43    qemu_irq irq;
     44};
     45
     46
     47#define TYPE_XLNX_DPDMA "xlnx.dpdma"
     48OBJECT_DECLARE_SIMPLE_TYPE(XlnxDPDMAState, XLNX_DPDMA)
     49
     50/*
     51 * xlnx_dpdma_start_operation: Start the operation on the specified channel. The
     52 *                             DPDMA gets the current descriptor and retrieves
     53 *                             data to the buffer specified by
     54 *                             dpdma_set_host_data_location().
     55 *
     56 * Returns The number of bytes transferred by the DPDMA
     57 *         or 0 if an error occurred.
     58 *
     59 * @s The DPDMA state.
     60 * @channel The channel to start.
     61 */
     62size_t xlnx_dpdma_start_operation(XlnxDPDMAState *s, uint8_t channel,
     63                                  bool one_desc);
     64
     65/*
     66 * xlnx_dpdma_set_host_data_location: Set the location in the host memory where
     67 *                                    to store the data out from the dma
     68 *                                    channel.
     69 *
     70 * @s The DPDMA state.
     71 * @channel The channel associated to the pointer.
     72 * @p The buffer where to store the data.
     73 */
     74/* XXX: add a maximum size arg and send an interrupt in case of overflow. */
     75void xlnx_dpdma_set_host_data_location(XlnxDPDMAState *s, uint8_t channel,
     76                                       void *p);
     77
     78/*
     79 * xlnx_dpdma_trigger_vsync_irq: Trigger a VSYNC IRQ when the display is
     80 *                               updated.
     81 *
     82 * @s The DPDMA state.
     83 */
     84void xlnx_dpdma_trigger_vsync_irq(XlnxDPDMAState *s);
     85
     86#endif /* XLNX_DPDMA_H */