2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 * Ben Gray <ben.r.gray@gmail.com>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * sDMA device driver interface for the TI SoC
35 * See the ti_sdma.c file for implementation details.
38 * OMAP35x Applications Processor
39 * Technical Reference Manual
40 * (omap35xx_techref.pdf)
45 #define TI_SDMA_ENDIAN_BIG 0x1
46 #define TI_SDMA_ENDIAN_LITTLE 0x0
48 #define TI_SDMA_BURST_NONE 0x0
49 #define TI_SDMA_BURST_16 0x1
50 #define TI_SDMA_BURST_32 0x2
51 #define TI_SDMA_BURST_64 0x3
53 #define TI_SDMA_DATA_8BITS_SCALAR 0x0
54 #define TI_SDMA_DATA_16BITS_SCALAR 0x1
55 #define TI_SDMA_DATA_32BITS_SCALAR 0x2
57 #define TI_SDMA_ADDR_CONSTANT 0x0
58 #define TI_SDMA_ADDR_POST_INCREMENT 0x1
59 #define TI_SDMA_ADDR_SINGLE_INDEX 0x2
60 #define TI_SDMA_ADDR_DOUBLE_INDEX 0x3
63 * Status flags for the DMA callback
66 #define TI_SDMA_STATUS_DROP (1UL << 1)
67 #define TI_SDMA_STATUS_HALF (1UL << 2)
68 #define TI_SDMA_STATUS_FRAME (1UL << 3)
69 #define TI_SDMA_STATUS_LAST (1UL << 4)
70 #define TI_SDMA_STATUS_BLOCK (1UL << 5)
71 #define TI_SDMA_STATUS_SYNC (1UL << 6)
72 #define TI_SDMA_STATUS_PKT (1UL << 7)
73 #define TI_SDMA_STATUS_TRANS_ERR (1UL << 8)
74 #define TI_SDMA_STATUS_SECURE_ERR (1UL << 9)
75 #define TI_SDMA_STATUS_SUPERVISOR_ERR (1UL << 10)
76 #define TI_SDMA_STATUS_MISALIGNED_ADRS_ERR (1UL << 11)
77 #define TI_SDMA_STATUS_DRAIN_END (1UL << 12)
79 #define TI_SDMA_SYNC_FRAME (1UL << 0)
80 #define TI_SDMA_SYNC_BLOCK (1UL << 1)
81 #define TI_SDMA_SYNC_PACKET (TI_SDMA_SYNC_FRAME | TI_SDMA_SYNC_BLOCK)
82 #define TI_SDMA_SYNC_TRIG_ON_SRC (1UL << 8)
83 #define TI_SDMA_SYNC_TRIG_ON_DST (1UL << 9)
85 #define TI_SDMA_IRQ_FLAG_DROP (1UL << 1)
86 #define TI_SDMA_IRQ_FLAG_HALF_FRAME_COMPL (1UL << 2)
87 #define TI_SDMA_IRQ_FLAG_FRAME_COMPL (1UL << 3)
88 #define TI_SDMA_IRQ_FLAG_START_LAST_FRAME (1UL << 4)
89 #define TI_SDMA_IRQ_FLAG_BLOCK_COMPL (1UL << 5)
90 #define TI_SDMA_IRQ_FLAG_ENDOF_PKT (1UL << 7)
91 #define TI_SDMA_IRQ_FLAG_DRAIN (1UL << 12)
93 int ti_sdma_activate_channel(unsigned int *ch,
94 void (*callback)(unsigned int ch, uint32_t status, void *data), void *data);
95 int ti_sdma_deactivate_channel(unsigned int ch);
96 int ti_sdma_start_xfer(unsigned int ch, unsigned int src_paddr,
97 unsigned long dst_paddr, unsigned int frmcnt, unsigned int elmcnt);
98 int ti_sdma_start_xfer_packet(unsigned int ch, unsigned int src_paddr,
99 unsigned long dst_paddr, unsigned int frmcnt, unsigned int elmcnt,
100 unsigned int pktsize);
101 int ti_sdma_stop_xfer(unsigned int ch);
102 int ti_sdma_enable_channel_irq(unsigned int ch, uint32_t flags);
103 int ti_sdma_disable_channel_irq(unsigned int ch);
104 int ti_sdma_get_channel_status(unsigned int ch, uint32_t *status);
105 int ti_sdma_set_xfer_endianess(unsigned int ch, unsigned int src, unsigned int dst);
106 int ti_sdma_set_xfer_burst(unsigned int ch, unsigned int src, unsigned int dst);
107 int ti_sdma_set_xfer_data_type(unsigned int ch, unsigned int type);
108 int ti_sdma_set_callback(unsigned int ch,
109 void (*callback)(unsigned int ch, uint32_t status, void *data), void *data);
110 int ti_sdma_sync_params(unsigned int ch, unsigned int trigger, unsigned int mode);
111 int ti_sdma_set_addr_mode(unsigned int ch, unsigned int src_mode, unsigned int dst_mode);
113 #endif /* _TI_SDMA_H_ */