1 | #include <machine/rtems-bsd-kernel-space.h> |
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2 | |
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3 | #include <rtems/bsd/local/opt_dpaa.h> |
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4 | |
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5 | /* Copyright 2013 - 2015 Freescale Semiconductor, Inc. |
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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 are met: |
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9 | * * Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * * Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * * Neither the name of Freescale Semiconductor nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * ALTERNATIVELY, this software may be distributed under the terms of the |
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19 | * GNU General Public License ("GPL") as published by the Free Software |
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20 | * Foundation, either version 2 of that License or (at your option) any |
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21 | * later version. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY |
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24 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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25 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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26 | * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY |
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27 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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28 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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29 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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30 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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32 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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33 | */ |
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34 | |
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35 | #include "qman_priv.h" |
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36 | |
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37 | #include <linux/time.h> |
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38 | |
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39 | static int __init early_qman_init(void) |
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40 | { |
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41 | struct device_node *dn; |
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42 | u32 is_portal_available; |
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43 | |
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44 | qman_init(); |
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45 | |
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46 | is_portal_available = 0; |
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47 | for_each_compatible_node(dn, NULL, "fsl,qman-portal") { |
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48 | if (of_device_is_available(dn)) { |
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49 | is_portal_available = 1; |
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50 | break; |
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51 | } |
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52 | } |
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53 | |
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54 | if (!qman_have_ccsr() && is_portal_available) { |
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55 | struct qman_fq fq = {.fqid = 1}; |
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56 | struct qm_mcr_queryfq_np np; |
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57 | int err, retry = CONFIG_FSL_QMAN_INIT_TIMEOUT; |
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58 | struct timespec nowts, diffts, startts = current_kernel_time(); |
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59 | |
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60 | /* Loop while querying given fqid succeeds or time out */ |
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61 | while (1) { |
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62 | err = qman_query_fq_np(&fq, &np); |
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63 | if (!err) { |
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64 | /* success, control-plane has configured QMan */ |
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65 | break; |
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66 | } else if (err != -ERANGE) { |
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67 | pr_err("I/O error, continuing anyway\n"); |
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68 | break; |
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69 | } |
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70 | nowts = current_kernel_time(); |
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71 | diffts = timespec_sub(nowts, startts); |
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72 | if (diffts.tv_sec > 0) { |
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73 | if (!retry--) { |
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74 | pr_err("Time out, control-plane dead?\n"); |
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75 | break; |
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76 | } |
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77 | pr_warn("Polling for the control-plane (%d)\n", |
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78 | retry); |
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79 | } |
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80 | } |
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81 | } |
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82 | |
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83 | qman_resource_init(); |
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84 | |
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85 | return 0; |
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86 | } |
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87 | subsys_initcall(early_qman_init); |
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