4 * Copyright (C) 2015 : GreenSocs Ltd
5 * http://www.greensocs.com/ , email: info@greensocs.com
8 * Frederic Konrad <fred.konrad@greensocs.com>
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.
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.
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/>.
28 #include "hw/sysbus.h"
29 #include "ui/console.h"
30 #include "sysemu/dma.h"
32 #define XLNX_DPDMA_REG_ARRAY_SIZE (0x1000 >> 2)
34 struct XlnxDPDMAState {
36 SysBusDevice parent_obj;
39 uint32_t registers[XLNX_DPDMA_REG_ARRAY_SIZE];
41 bool operation_finished[6];
45 typedef struct XlnxDPDMAState XlnxDPDMAState;
47 #define TYPE_XLNX_DPDMA "xlnx.dpdma"
48 #define XLNX_DPDMA(obj) OBJECT_CHECK(XlnxDPDMAState, (obj), TYPE_XLNX_DPDMA)
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().
56 * Returns The number of bytes transfered by the DPDMA or 0 if an error occured.
59 * @channel The channel to start.
61 size_t xlnx_dpdma_start_operation(XlnxDPDMAState *s, uint8_t channel,
65 * xlnx_dpdma_set_host_data_location: Set the location in the host memory where
66 * to store the data out from the dma
70 * @channel The channel associated to the pointer.
71 * @p The buffer where to store the data.
73 /* XXX: add a maximum size arg and send an interrupt in case of overflow. */
74 void xlnx_dpdma_set_host_data_location(XlnxDPDMAState *s, uint8_t channel,
78 * xlnx_dpdma_trigger_vsync_irq: Trigger a VSYNC IRQ when the display is
83 void xlnx_dpdma_trigger_vsync_irq(XlnxDPDMAState *s);
85 #endif /* XLNX_DPDMA_H */