cdmacreg.h revision 1.1.2.2
1 1.1.2.2 yamt /* $NetBSD */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /* 4 1.1.2.2 yamt * Copyright (c) 2006 Jachym Holecek 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * Written for DFC Design, s.r.o. 8 1.1.2.2 yamt * 9 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.1.2.2 yamt * modification, are permitted provided that the following conditions 11 1.1.2.2 yamt * are met: 12 1.1.2.2 yamt * 13 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 yamt * 16 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 17 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 18 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 19 1.1.2.2 yamt * 20 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 1.1.2.2 yamt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 1.1.2.2 yamt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 1.1.2.2 yamt * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 1.1.2.2 yamt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 1.1.2.2 yamt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 1.1.2.2 yamt * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 1.1.2.2 yamt * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 1.1.2.2 yamt * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 1.1.2.2 yamt * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 yamt */ 31 1.1.2.2 yamt 32 1.1.2.2 yamt #include <sys/cdefs.h> 33 1.1.2.2 yamt 34 1.1.2.2 yamt #ifndef _VIRTEX_DEV_CDMACREG_H_ 35 1.1.2.2 yamt #define _VIRTEX_DEV_CDMACREG_H_ 36 1.1.2.2 yamt 37 1.1.2.2 yamt /* 38 1.1.2.2 yamt * CDMAC registers and data structures. Keep the names fully qualified, users 39 1.1.2.2 yamt * need at least CDMAC_STAT bits to manipulate descriptor queues. The offsets 40 1.1.2.2 yamt * are multiplied by four compared to Xilinx documentation -- so don't get 41 1.1.2.2 yamt * confused, bus space will deal. 42 1.1.2.2 yamt * 43 1.1.2.2 yamt * The number of channels and interrupt wiring differs per design. 44 1.1.2.2 yamt */ 45 1.1.2.2 yamt 46 1.1.2.2 yamt /* Status and control register block sizes. */ 47 1.1.2.2 yamt #define CDMAC_CTRL_SIZE 0x0c 48 1.1.2.2 yamt #define CDMAC_STAT_SIZE 0x04 49 1.1.2.2 yamt 50 1.1.2.2 yamt /* Status and control register offsets per channel. */ 51 1.1.2.2 yamt #define CDMAC_STAT_BASE(n) (0x80 + (n) * 0x04) 52 1.1.2.2 yamt #define CDMAC_CTRL_BASE(n) (0x00 + (n) * 0x10) 53 1.1.2.2 yamt 54 1.1.2.2 yamt /* Individual engine control registers. */ 55 1.1.2.2 yamt #define CDMAC_NEXT 0x0000 /* Next descriptor pointer, 56 1.1.2.2 yamt * 32B aligned, 0x0 = stop */ 57 1.1.2.2 yamt #define CDMAC_CURADDR 0x0004 /* Address being transferred */ 58 1.1.2.2 yamt #define CDMAC_CURSIZE 0x0008 /* Remaining length */ 59 1.1.2.2 yamt #define CDMAC_CURDESC 0x000c /* Current descriptor pointer */ 60 1.1.2.2 yamt 61 1.1.2.2 yamt #define CDMAC_CURSIZE_MASK 0x00ffffff 62 1.1.2.2 yamt 63 1.1.2.2 yamt /* Engine status reg bits. */ 64 1.1.2.2 yamt #define CDMAC_STAT_ERROR 0x80000000 /* EINVAL -> halt, interrupt */ 65 1.1.2.2 yamt #define CDMAC_STAT_INTR 0x40000000 /* Interrupt on end of descr */ 66 1.1.2.2 yamt #define CDMAC_STAT_STOP 0x20000000 /* Stop on end of descr */ 67 1.1.2.2 yamt #define CDMAC_STAT_DONE 0x10000000 /* Descriptor done */ 68 1.1.2.2 yamt #define CDMAC_STAT_SOP 0x08000000 /* Start of packet */ 69 1.1.2.2 yamt #define CDMAC_STAT_EOP 0x04000000 /* End of packet */ 70 1.1.2.2 yamt #define CDMAC_STAT_BUSY 0x02000000 /* Engine busy */ 71 1.1.2.2 yamt #define CDMAC_STAT_RESET 0x01000000 /* Channel reset */ 72 1.1.2.2 yamt 73 1.1.2.2 yamt #ifdef notdef 74 1.1.2.2 yamt /* 75 1.1.2.2 yamt * DMA engine timers, 8bit. Rather useless -- we need "interrupt 76 1.1.2.2 yamt * if transfer stalls for N cycles", not "fire after N cycles". 77 1.1.2.2 yamt * If we ever use this, move definitions to design-specific code 78 1.1.2.2 yamt * like we do with STAT. 79 1.1.2.2 yamt */ 80 1.1.2.2 yamt #define CDMAC_TIMER_TX0 0x00a0 81 1.1.2.2 yamt #define CDMAC_TIMER_RX0 0x00a4 82 1.1.2.2 yamt #define CDMAC_TIMER_TX1 0x00a8 83 1.1.2.2 yamt #define CDMAC_TIMER_RX1 0x00ac 84 1.1.2.2 yamt #endif /* notdef */ 85 1.1.2.2 yamt 86 1.1.2.2 yamt /* Interrupt register (active-high level-sensitive intr). */ 87 1.1.2.2 yamt #define CDMAC_INTR 0x00bc 88 1.1.2.2 yamt 89 1.1.2.2 yamt #define CDMAC_INTR_MIE 0x80000000 /* Master interrupt enable */ 90 1.1.2.2 yamt #define CDMAC_INTR_TX0 0x00000001 /* Descriptor interrupts */ 91 1.1.2.2 yamt #define CDMAC_INTR_RX0 0x00000002 92 1.1.2.2 yamt #define CDMAC_INTR_TX1 0x00000004 93 1.1.2.2 yamt #define CDMAC_INTR_RX1 0x00000008 94 1.1.2.2 yamt #define CDMAC_TIMO_TX0 0x01000000 /* Timer interrupts */ 95 1.1.2.2 yamt #define CDMAC_TIMO_RX0 0x02000000 96 1.1.2.2 yamt #define CDMAC_TIMO_TX1 0x04000000 97 1.1.2.2 yamt #define CDMAC_TIMO_RX1 0x08000000 98 1.1.2.2 yamt 99 1.1.2.2 yamt #define CDMAC_CHAN_INTR(n) (1 << (n)) 100 1.1.2.2 yamt 101 1.1.2.2 yamt /* 102 1.1.2.2 yamt * Wire data structure of transfer descriptor (shared for Rx/Tx). 103 1.1.2.2 yamt */ 104 1.1.2.2 yamt struct cdmac_descr { 105 1.1.2.2 yamt uint32_t desc_next; /* Next descriptor */ 106 1.1.2.2 yamt uint32_t desc_addr; /* Payload address */ 107 1.1.2.2 yamt uint32_t desc_size; /* Payload size */ 108 1.1.2.2 yamt 109 1.1.2.2 yamt /* Application defined fields, valid in 1st desc on Tx, last on Rx. */ 110 1.1.2.2 yamt uint32_t desc_user0; /* See below */ 111 1.1.2.2 yamt #define desc_stat desc_user0 112 1.1.2.2 yamt 113 1.1.2.2 yamt uint32_t desc_user1; 114 1.1.2.2 yamt uint32_t desc_user2; 115 1.1.2.2 yamt uint32_t desc_user3; 116 1.1.2.2 yamt uint32_t desc_user4; 117 1.1.2.2 yamt } __aligned(8) __packed; 118 1.1.2.2 yamt 119 1.1.2.2 yamt #define DMAC_STAT_MASK 0xff000000 /* CDMAC portion of desc_user0 */ 120 1.1.2.2 yamt #define DMAC_USER_MASK 0x00ffffff /* User defined part of desc_user0 */ 121 1.1.2.2 yamt 122 1.1.2.2 yamt #endif /*_VIRTEX_DEV_CDMACREG_H_*/ 123
Indexes created Wed Oct 22 13:09:56 GMT 2025