Commit d3c6369a authored by KONRAD Frederic's avatar KONRAD Frederic Committed by Peter Maydell
Browse files

introduce xlnx-dpdma 



This is the implementation of the DPDMA.

Signed-off-by: default avatarKONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: default avatarAlistair Francis <alistair.francis@xilinx.com>
Tested-By: default avatarHyun Kwon <hyun.kwon@xilinx.com>
Message-id: 1465833014-21982-8-git-send-email-fred.konrad@greensocs.com
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 78c71af8

hw/dma/Makefile.objs

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ common-obj-$(CONFIG_XILINX_AXI) += xilinx_axidma.o 
common-obj-$(CONFIG_ETRAXFS) += etraxfs_dma.o

common-obj-$(CONFIG_STP2000) += sparc32_dma.o

common-obj-$(CONFIG_SUN4M) += sun4m_iommu.o

obj-$(CONFIG_XLNX_ZYNQMP) += xlnx_dpdma.o



obj-$(CONFIG_OMAP) += omap_dma.o soc_dma.o

obj-$(CONFIG_PXA2XX) += pxa2xx_dma.o

hw/dma/xlnx_dpdma.c

0 → 100644
+786 −0

File added.

Preview size limit exceeded, changes collapsed.

include/hw/dma/xlnx_dpdma.h

0 → 100644
+85 −0
Original line number Diff line number Diff line 
/*

 * xlnx_dpdma.h

 *

 *  Copyright (C) 2015 : GreenSocs Ltd

 *      http://www.greensocs.com/ , email: info@greensocs.com

 *

 *  Developed by :

 *  Frederic Konrad   <fred.konrad@greensocs.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.

 *

 */



#ifndef XLNX_DPDMA_H

#define XLNX_DPDMA_H



#include "hw/sysbus.h"

#include "ui/console.h"

#include "sysemu/dma.h"



#define XLNX_DPDMA_REG_ARRAY_SIZE (0x1000 >> 2)



struct XlnxDPDMAState {

    /*< private >*/

    SysBusDevice parent_obj;

    /*< public >*/

    MemoryRegion iomem;

    uint32_t registers[XLNX_DPDMA_REG_ARRAY_SIZE];

    uint8_t *data[6];

    bool operation_finished[6];

    qemu_irq irq;

};



typedef struct XlnxDPDMAState XlnxDPDMAState;



#define TYPE_XLNX_DPDMA "xlnx.dpdma"

#define XLNX_DPDMA(obj) OBJECT_CHECK(XlnxDPDMAState, (obj), TYPE_XLNX_DPDMA)



/*

 * xlnx_dpdma_start_operation: Start the operation on the specified channel. The

 *                             DPDMA gets the current descriptor and retrieves

 *                             data to the buffer specified by

 *                             dpdma_set_host_data_location().

 *

 * Returns The number of bytes transfered by the DPDMA or 0 if an error occured.

 *

 * @s The DPDMA state.

 * @channel The channel to start.

 */

size_t xlnx_dpdma_start_operation(XlnxDPDMAState *s, uint8_t channel,

                                  bool one_desc);



/*

 * xlnx_dpdma_set_host_data_location: Set the location in the host memory where

 *                                    to store the data out from the dma

 *                                    channel.

 *

 * @s The DPDMA state.

 * @channel The channel associated to the pointer.

 * @p The buffer where to store the data.

 */

/* XXX: add a maximum size arg and send an interrupt in case of overflow. */

void xlnx_dpdma_set_host_data_location(XlnxDPDMAState *s, uint8_t channel,

                                       void *p);



/*

 * xlnx_dpdma_trigger_vsync_irq: Trigger a VSYNC IRQ when the display is

 *                               updated.

 *

 * @s The DPDMA state.

 */

void xlnx_dpdma_trigger_vsync_irq(XlnxDPDMAState *s);



#endif /* !XLNX_DPDMA_H */