1 | /*- |
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2 | * Copyright (c) 2015 Ian Lepore <ian@freebsd.org> |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * |
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14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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24 | * SUCH DAMAGE. |
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25 | * |
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26 | * $FreeBSD$ |
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27 | */ |
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28 | |
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29 | #ifndef _DEV_OFW_OFW_SUBR_H_ |
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30 | #define _DEV_OFW_OFW_SUBR_H_ |
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31 | |
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32 | /* |
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33 | * Translate an address from the Nth tuple of a device node's reg properties to |
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34 | * a physical memory address, by applying the range mappings from all ancestors. |
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35 | * This assumes that all ancestor ranges are simple numerical offsets for which |
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36 | * addition and subtraction operations will perform the required mapping (the |
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37 | * bit-options in the high word of standard PCI properties are also handled). |
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38 | * After the call, *pci_hi (if non-NULL) contains the phys.hi cell of the |
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39 | * device's parent PCI bus, or OFW_PADDR_NOT_PCI if no PCI bus is involved. |
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40 | * |
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41 | * This is intended to be a helper function called by the platform-specific |
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42 | * implementation of OF_decode_addr(), and not for direct use by device drivers. |
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43 | */ |
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44 | #define OFW_PADDR_NOT_PCI (~0) |
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45 | |
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46 | int ofw_reg_to_paddr(phandle_t _dev, int _regno, bus_addr_t *_paddr, |
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47 | bus_size_t *_size, pcell_t *_pci_hi); |
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48 | |
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49 | int ofw_parse_bootargs(void); |
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50 | |
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51 | #endif |
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