1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /* Driver Manager Read/Write Interface Implementation. |
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4 | * |
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5 | * COPYRIGHT (c) 2009 Cobham Gaisler AB. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include <string.h> |
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30 | #include <drvmgr/drvmgr.h> |
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31 | |
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32 | /* Set a range of memory in 128 byte chunks. |
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33 | * This call will take 128 bytes for buffer on stack |
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34 | */ |
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35 | void drvmgr_rw_memset( |
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36 | void *dstadr, |
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37 | int c, |
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38 | size_t n, |
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39 | void *a, |
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40 | drvmgr_wmem_arg wmem |
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41 | ) |
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42 | { |
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43 | unsigned long long buf[16+1]; /* Extra bytes after data are reserved |
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44 | * for optimizations by write_mem */ |
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45 | int txlen; |
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46 | char *adr; |
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47 | |
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48 | if (n <= 0) |
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49 | return; |
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50 | |
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51 | if (n > sizeof(unsigned long long)*16) |
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52 | txlen = sizeof(unsigned long long)*16; |
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53 | else |
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54 | txlen = n; |
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55 | |
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56 | memset(buf, c, txlen); |
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57 | |
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58 | adr = dstadr; |
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59 | do { |
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60 | wmem(adr, (const void *)&buf[0], txlen, a); |
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61 | adr += txlen; |
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62 | n -= txlen; |
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63 | |
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64 | /* next length to transmitt */ |
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65 | if (n > 16*sizeof(unsigned long long)) |
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66 | txlen = 16*sizeof(unsigned long long); |
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67 | else |
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68 | txlen = n; |
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69 | } while (n > 0); |
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70 | } |
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