projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| d3c6369a FK |
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 | ||
| 32 | #define XLNX_DPDMA_REG_ARRAY_SIZE (0x1000 >> 2) | |
| 33 | ||
| 34 | struct XlnxDPDMAState { | |
| 35 | /*< private >*/ | |
| 36 | SysBusDevice parent_obj; | |
| 37 | /*< public >*/ | |
| 38 | MemoryRegion iomem; | |
| 39 | uint32_t registers[XLNX_DPDMA_REG_ARRAY_SIZE]; | |
| 40 | uint8_t *data[6]; | |
| 41 | bool operation_finished[6]; | |
| 42 | qemu_irq irq; | |
| 43 | }; | |
| 44 | ||
| 45 | typedef struct XlnxDPDMAState XlnxDPDMAState; | |
| 46 | ||
| 47 | #define TYPE_XLNX_DPDMA "xlnx.dpdma" | |
| 48 | #define XLNX_DPDMA(obj) OBJECT_CHECK(XlnxDPDMAState, (obj), TYPE_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 | * | |
| 5bb8590d SW |
56 | * Returns The number of bytes transferred by the DPDMA |
| 57 | * or 0 if an error occurred. | |
| d3c6369a FK |
58 | * |
| 59 | * @s The DPDMA state. | |
| 60 | * @channel The channel to start. | |
| 61 | */ | |
| 62 | size_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. */ | |
| 75 | void 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 | */ | |
| 84 | void xlnx_dpdma_trigger_vsync_irq(XlnxDPDMAState *s); | |
| 85 | ||
| 175de524 | 86 | #endif /* XLNX_DPDMA_H */ |