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71e3c3083b
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008 Nathan Whitehorn
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* All rights reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _POWERPC_POWERMAC_DBDMAVAR_H_
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#define _POWERPC_POWERMAC_DBDMAVAR_H_
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struct dbdma_command {
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uint8_t cmd:4; /* DBDMA command */
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uint8_t _resd1:1;
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uint8_t key:3; /* Stream number, or 6 for KEY_SYSTEM */
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uint8_t _resd2:2;
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/* Interrupt, branch, and wait flags */
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uint8_t intr:2;
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uint8_t branch:2;
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uint8_t wait:2;
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uint16_t reqCount; /* Bytes to transfer */
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uint32_t address; /* 32-bit system physical address */
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uint32_t cmdDep; /* Branch address or quad word to load/store */
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uint16_t xferStatus; /* Contents of channel status after completion */
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uint16_t resCount; /* Number of residual bytes outstanding */
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};
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struct dbdma_channel {
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struct resource *sc_regs;
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u_int sc_off;
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struct dbdma_command *sc_slots;
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int sc_nslots;
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bus_addr_t sc_slots_pa;
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bus_dma_tag_t sc_dmatag;
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bus_dmamap_t sc_dmamap;
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uint32_t sc_saved_regs[5];
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};
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/*
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DBDMA registers are found at 0x8000 + n*0x100 in the macio register space,
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and are laid out as follows within each block:
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Address: Description: Length (bytes):
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0x000 Channel Control 4
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0x004 Channel Status 4
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0x00C Command Phys Addr 4
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0x010 Interrupt Select 4
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0x014 Branch Select 4
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0x018 Wait Select 4
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*/
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#define CHAN_CONTROL_REG 0x00
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#define CHAN_STATUS_REG 0x04
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#define CHAN_CMDPTR_HI 0x08
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#define CHAN_CMDPTR 0x0C
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#define CHAN_INTR_SELECT 0x10
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#define CHAN_BRANCH_SELECT 0x14
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#define CHAN_WAIT_SELECT 0x18
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/* Channel control is the write channel to channel status, the upper 16 bits
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are a mask of which bytes to change */
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#define DBDMA_REG_MASK_SHIFT 16
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/* Status bits 0-7 are device dependent status bits */
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/*
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The Interrupt/Branch/Wait Select triggers the corresponding condition bits
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in the event that (select.mask & device dependent status) == select.value
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They are defined a follows:
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Byte 1: Reserved
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Byte 2: Mask
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Byte 3: Reserved
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Byte 4: Value
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*/
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#endif /* _POWERPC_POWERMAC_DBDMAVAR_H_ */
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