| 1 | /* $Id: Modesetting.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox Video driver, common code - HGSMI initialisation and helper
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| 4 | * functions.
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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| 9 | *
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| 10 | * Permission is hereby granted, free of charge, to any person
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| 11 | * obtaining a copy of this software and associated documentation
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| 12 | * files (the "Software"), to deal in the Software without
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| 13 | * restriction, including without limitation the rights to use,
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| 14 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 15 | * copies of the Software, and to permit persons to whom the
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| 16 | * Software is furnished to do so, subject to the following
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| 17 | * conditions:
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| 18 | *
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| 19 | * The above copyright notice and this permission notice shall be
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| 20 | * included in all copies or substantial portions of the Software.
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| 21 | *
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| 22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 23 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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| 24 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 25 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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| 26 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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| 27 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 28 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 29 | * OTHER DEALINGS IN THE SOFTWARE.
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| 30 | */
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| 31 |
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| 32 | #include <VBoxVideoGuest.h>
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| 33 | #include <VBoxVideoVBE.h>
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| 34 | #include <HGSMIChannels.h>
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| 35 |
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| 36 | #ifndef VBOX_GUESTR3XF86MOD
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| 37 | # include <VBoxVideoIPRT.h>
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| 38 | #endif
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| 39 |
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| 40 | /**
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| 41 | * Gets the count of virtual monitors attached to the guest via an HGSMI
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| 42 | * command
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| 43 | *
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| 44 | * @returns the right count on success or 1 on failure.
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| 45 | * @param pCtx the context containing the heap to use
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| 46 | */
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| 47 | DECLHIDDEN(uint32_t) VBoxHGSMIGetMonitorCount(PHGSMIGUESTCOMMANDCONTEXT pCtx)
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| 48 | {
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| 49 | /* Query the configured number of displays. */
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| 50 | uint32_t cDisplays = 0;
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| 51 | VBoxQueryConfHGSMI(pCtx, VBOX_VBVA_CONF32_MONITOR_COUNT, &cDisplays);
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| 52 | // LogFunc(("cDisplays = %d\n", cDisplays));
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| 53 | if (cDisplays == 0 || cDisplays > VBOX_VIDEO_MAX_SCREENS)
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| 54 | /* Host reported some bad value. Continue in the 1 screen mode. */
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| 55 | cDisplays = 1;
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| 56 | return cDisplays;
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| 57 | }
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| 58 |
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| 59 |
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| 60 | /**
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| 61 | * Query whether the virtual hardware supports VBE_DISPI_ID_CFG
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| 62 | * and set the interface.
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| 63 | *
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| 64 | * @returns Whether the interface is supported.
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| 65 | */
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| 66 | DECLHIDDEN(bool) VBoxVGACfgAvailable(void)
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| 67 | {
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| 68 | uint16_t DispiId;
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| 69 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ID);
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| 70 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_ID_CFG);
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| 71 | DispiId = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 72 | return (DispiId == VBE_DISPI_ID_CFG);
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| 73 | }
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| 74 |
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| 75 |
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| 76 | /**
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| 77 | * Query a configuration value from the virtual hardware which supports VBE_DISPI_ID_CFG.
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| 78 | * I.e. use this function only if VBoxVGACfgAvailable returns true.
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| 79 | *
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| 80 | * @returns Whether the value is supported.
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| 81 | * @param u16Id Identifier of the configuration value (VBE_DISPI_CFG_ID_*).
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| 82 | * @param pu32Value Where to store value from the host.
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| 83 | * @param u32DefValue What to assign to *pu32Value if the value is not supported.
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| 84 | */
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| 85 | DECLHIDDEN(bool) VBoxVGACfgQuery(uint16_t u16Id, uint32_t *pu32Value, uint32_t u32DefValue)
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| 86 | {
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| 87 | uint32_t u32;
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| 88 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_CFG);
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| 89 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_CFG_MASK_SUPPORT | u16Id);
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| 90 | u32 = VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA);
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| 91 | if (u32)
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| 92 | {
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| 93 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, u16Id);
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| 94 | *pu32Value = VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA);
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| 95 | return true;
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| 96 | }
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| 97 |
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| 98 | *pu32Value = u32DefValue;
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| 99 | return false;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | /**
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| 104 | * Returns the size of the video RAM in bytes.
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| 105 | *
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| 106 | * @returns the size
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| 107 | */
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| 108 | DECLHIDDEN(uint32_t) VBoxVideoGetVRAMSize(void)
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| 109 | {
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| 110 | /** @note A 32bit read on this port returns the VRAM size if interface is older than VBE_DISPI_ID_CFG. */
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| 111 | return VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA);
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| 112 | }
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| 113 |
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| 114 |
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| 115 | /**
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| 116 | * Check whether this hardware allows the display width to have non-multiple-
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| 117 | * of-eight values.
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| 118 | *
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| 119 | * @returns true if any width is allowed, false otherwise.
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| 120 | */
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| 121 | DECLHIDDEN(bool) VBoxVideoAnyWidthAllowed(void)
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| 122 | {
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| 123 | unsigned DispiId;
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| 124 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ID);
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| 125 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_ID_ANYX);
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| 126 | DispiId = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 127 | return (DispiId == VBE_DISPI_ID_ANYX);
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| 128 | }
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| 129 |
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| 130 |
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| 131 | /**
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| 132 | * Tell the host about how VRAM is divided up between each screen via an HGSMI
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| 133 | * command. It is acceptable to specifiy identical data for each screen if
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| 134 | * they share a single framebuffer.
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| 135 | *
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| 136 | * @returns iprt status code, either VERR_NO_MEMORY or the status returned by
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| 137 | * @a pfnFill
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| 138 | * @todo What was I thinking of with that callback function? It
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| 139 | * would be much simpler to just pass in a structure in normal
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| 140 | * memory and copy it.
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| 141 | * @param pCtx the context containing the heap to use
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| 142 | * @param u32Count the number of screens we are activating
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| 143 | * @param pfnFill a callback which initialises the VBVAINFOVIEW structures
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| 144 | * for all screens
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| 145 | * @param pvData context data for @a pfnFill
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| 146 | */
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| 147 | DECLHIDDEN(int) VBoxHGSMISendViewInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
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| 148 | uint32_t u32Count,
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| 149 | PFNHGSMIFILLVIEWINFO pfnFill,
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| 150 | void *pvData)
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| 151 | {
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| 152 | int rc;
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| 153 | /* Issue the screen info command. */
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| 154 | VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_HOST *pInfo =
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| 155 | (VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAINFOVIEW) * u32Count,
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| 156 | HGSMI_CH_VBVA, VBVA_INFO_VIEW);
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| 157 | if (pInfo)
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| 158 | {
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| 159 | rc = pfnFill(pvData, (VBVAINFOVIEW *)pInfo /* lazy bird */, u32Count);
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| 160 | if (RT_SUCCESS(rc))
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| 161 | VBoxHGSMIBufferSubmit(pCtx, pInfo);
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| 162 | VBoxHGSMIBufferFree(pCtx, pInfo);
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| 163 | }
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| 164 | else
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| 165 | rc = VERR_NO_MEMORY;
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| 166 | return rc;
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| 167 | }
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| 168 |
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| 169 |
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| 170 | /**
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| 171 | * Set a video mode using port registers. This must be done for the first
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| 172 | * screen before every HGSMI modeset and also works when HGSM is not enabled.
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| 173 | * @param cWidth the mode width
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| 174 | * @param cHeight the mode height
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| 175 | * @param cVirtWidth the mode pitch
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| 176 | * @param cBPP the colour depth of the mode
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| 177 | * @param fFlags flags for the mode. These will be or-ed with the
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| 178 | * default _ENABLED flag, so unless you are restoring
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| 179 | * a saved mode or have special requirements you can pass
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| 180 | * zero here.
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| 181 | * @param cx the horizontal panning offset
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| 182 | * @param cy the vertical panning offset
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| 183 | */
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| 184 | DECLHIDDEN(void) VBoxVideoSetModeRegisters(uint16_t cWidth, uint16_t cHeight,
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| 185 | uint16_t cVirtWidth, uint16_t cBPP,
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| 186 | uint16_t fFlags, uint16_t cx,
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| 187 | uint16_t cy)
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| 188 | {
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| 189 | /* set the mode characteristics */
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| 190 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_XRES);
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| 191 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cWidth);
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| 192 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_YRES);
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| 193 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cHeight);
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| 194 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_VIRT_WIDTH);
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| 195 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cVirtWidth);
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| 196 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_BPP);
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| 197 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cBPP);
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| 198 | /* enable the mode */
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| 199 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE);
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| 200 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, fFlags | VBE_DISPI_ENABLED);
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| 201 | /* Panning registers */
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| 202 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_X_OFFSET);
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| 203 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cx);
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| 204 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_Y_OFFSET);
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| 205 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cy);
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| 206 | /** @todo read from the port to see if the mode switch was successful */
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| 207 | }
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| 208 |
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| 209 |
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| 210 | /**
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| 211 | * Get the video mode for the first screen using the port registers. All
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| 212 | * parameters are optional
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| 213 | * @returns true if the VBE mode returned is active, false if we are in VGA
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| 214 | * mode
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| 215 | * @note If anyone else needs additional register values just extend the
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| 216 | * function with additional parameters and fix any existing callers.
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| 217 | * @param pcWidth where to store the mode width
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| 218 | * @param pcHeight where to store the mode height
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| 219 | * @param pcVirtWidth where to store the mode pitch
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| 220 | * @param pcBPP where to store the colour depth of the mode
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| 221 | * @param pfFlags where to store the flags for the mode
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| 222 | */
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| 223 | DECLHIDDEN(bool) VBoxVideoGetModeRegisters(uint16_t *pcWidth, uint16_t *pcHeight,
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| 224 | uint16_t *pcVirtWidth, uint16_t *pcBPP,
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| 225 | uint16_t *pfFlags)
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| 226 | {
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| 227 | uint16_t fFlags;
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| 228 |
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| 229 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE);
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| 230 | fFlags = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 231 | if (pcWidth)
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| 232 | {
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| 233 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_XRES);
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| 234 | *pcWidth = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 235 | }
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| 236 | if (pcHeight)
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| 237 | {
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| 238 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_YRES);
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| 239 | *pcHeight = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 240 | }
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| 241 | if (pcVirtWidth)
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| 242 | {
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| 243 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_VIRT_WIDTH);
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| 244 | *pcVirtWidth = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 245 | }
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| 246 | if (pcBPP)
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| 247 | {
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| 248 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_BPP);
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| 249 | *pcBPP = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA);
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| 250 | }
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| 251 | if (pfFlags)
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| 252 | *pfFlags = fFlags;
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| 253 | return RT_BOOL(fFlags & VBE_DISPI_ENABLED);
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| 254 | }
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| 255 |
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| 256 |
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| 257 | /**
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| 258 | * Disable our extended graphics mode and go back to VGA mode.
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| 259 | */
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| 260 | DECLHIDDEN(void) VBoxVideoDisableVBE(void)
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| 261 | {
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| 262 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE);
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| 263 | VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, 0);
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| 264 | }
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| 265 |
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| 266 |
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| 267 | /**
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| 268 | * Set a video mode via an HGSMI request. The views must have been
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| 269 | * initialised first using @a VBoxHGSMISendViewInfo and if the mode is being
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| 270 | * set on the first display then it must be set first using registers.
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| 271 | * @param pCtx The context containing the heap to use.
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| 272 | * @param cDisplay the screen number
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| 273 | * @param cOriginX the horizontal displacement relative to the first screen
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| 274 | * @param cOriginY the vertical displacement relative to the first screen
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| 275 | * @param offStart the offset of the visible area of the framebuffer
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| 276 | * relative to the framebuffer start
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| 277 | * @param cbPitch the offset in bytes between the starts of two adjecent
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| 278 | * scan lines in video RAM
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| 279 | * @param cWidth the mode width
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| 280 | * @param cHeight the mode height
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| 281 | * @param cBPP the colour depth of the mode
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| 282 | * @param fFlags flags
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| 283 | */
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| 284 | DECLHIDDEN(void) VBoxHGSMIProcessDisplayInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
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| 285 | uint32_t cDisplay,
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| 286 | int32_t cOriginX,
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| 287 | int32_t cOriginY,
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| 288 | uint32_t offStart,
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| 289 | uint32_t cbPitch,
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| 290 | uint32_t cWidth,
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| 291 | uint32_t cHeight,
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| 292 | uint16_t cBPP,
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| 293 | uint16_t fFlags)
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| 294 | {
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| 295 | /* Issue the screen info command. */
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| 296 | VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_HOST *pScreen =
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| 297 | (VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAINFOSCREEN),
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| 298 | HGSMI_CH_VBVA, VBVA_INFO_SCREEN);
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| 299 | if (pScreen != NULL)
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| 300 | {
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| 301 | pScreen->u32ViewIndex = cDisplay;
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| 302 | pScreen->i32OriginX = cOriginX;
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| 303 | pScreen->i32OriginY = cOriginY;
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| 304 | pScreen->u32StartOffset = offStart;
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| 305 | pScreen->u32LineSize = cbPitch;
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| 306 | pScreen->u32Width = cWidth;
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| 307 | pScreen->u32Height = cHeight;
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| 308 | pScreen->u16BitsPerPixel = cBPP;
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| 309 | pScreen->u16Flags = fFlags;
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| 310 |
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| 311 | VBoxHGSMIBufferSubmit(pCtx, pScreen);
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| 312 |
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| 313 | VBoxHGSMIBufferFree(pCtx, pScreen);
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| 314 | }
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| 315 | else
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| 316 | {
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| 317 | // LogFunc(("HGSMIHeapAlloc failed\n"));
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| 318 | }
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| 319 | }
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| 320 |
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| 321 |
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| 322 | /** Report the rectangle relative to which absolute pointer events should be
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| 323 | * expressed. This information remains valid until the next VBVA resize event
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| 324 | * for any screen, at which time it is reset to the bounding rectangle of all
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| 325 | * virtual screens.
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| 326 | * @param pCtx The context containing the heap to use.
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| 327 | * @param cOriginX Upper left X co-ordinate relative to the first screen.
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| 328 | * @param cOriginY Upper left Y co-ordinate relative to the first screen.
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| 329 | * @param cWidth Rectangle width.
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| 330 | * @param cHeight Rectangle height.
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| 331 | * @returns iprt status code.
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| 332 | * @returns VERR_NO_MEMORY HGSMI heap allocation failed.
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| 333 | */
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| 334 | DECLHIDDEN(int) VBoxHGSMIUpdateInputMapping(PHGSMIGUESTCOMMANDCONTEXT pCtx, int32_t cOriginX, int32_t cOriginY,
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| 335 | uint32_t cWidth, uint32_t cHeight)
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| 336 | {
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| 337 | int rc;
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| 338 | VBVAREPORTINPUTMAPPING *p;
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| 339 | // Log(("%s: cOriginX=%d, cOriginY=%d, cWidth=%u, cHeight=%u\n", __PRETTY_FUNCTION__, (int)cOriginX, (int)cOriginX,
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| 340 | // (unsigned)cWidth, (unsigned)cHeight));
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| 341 |
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| 342 | /* Allocate the IO buffer. */
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| 343 | p = (VBVAREPORTINPUTMAPPING *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAREPORTINPUTMAPPING), HGSMI_CH_VBVA,
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| 344 | VBVA_REPORT_INPUT_MAPPING);
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| 345 | if (p)
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| 346 | {
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| 347 | /* Prepare data to be sent to the host. */
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| 348 | p->x = cOriginX;
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| 349 | p->y = cOriginY;
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| 350 | p->cx = cWidth;
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|---|
| 351 | p->cy = cHeight;
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|---|
| 352 | rc = VBoxHGSMIBufferSubmit(pCtx, p);
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|---|
| 353 | /* Free the IO buffer. */
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|---|
| 354 | VBoxHGSMIBufferFree(pCtx, p);
|
|---|
| 355 | }
|
|---|
| 356 | else
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|---|
| 357 | rc = VERR_NO_MEMORY;
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|---|
| 358 | // LogFunc(("rc = %d\n", rc));
|
|---|
| 359 | return rc;
|
|---|
| 360 | }
|
|---|
| 361 |
|
|---|
| 362 |
|
|---|
| 363 | /**
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|---|
| 364 | * Get most recent video mode hints.
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|---|
| 365 | * @param pCtx the context containing the heap to use
|
|---|
| 366 | * @param cScreens the number of screens to query hints for, starting at 0.
|
|---|
| 367 | * @param paHints array of VBVAMODEHINT structures for receiving the hints.
|
|---|
| 368 | * @returns iprt status code
|
|---|
| 369 | * @returns VERR_NO_MEMORY HGSMI heap allocation failed.
|
|---|
| 370 | * @returns VERR_NOT_SUPPORTED Host does not support this command.
|
|---|
| 371 | */
|
|---|
| 372 | DECLHIDDEN(int) VBoxHGSMIGetModeHints(PHGSMIGUESTCOMMANDCONTEXT pCtx,
|
|---|
| 373 | unsigned cScreens, VBVAMODEHINT *paHints)
|
|---|
| 374 | {
|
|---|
| 375 | int rc;
|
|---|
| 376 | VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_HOST *pQuery;
|
|---|
| 377 |
|
|---|
| 378 | AssertPtrReturn(paHints, VERR_INVALID_POINTER);
|
|---|
| 379 | pQuery = (VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx,
|
|---|
| 380 | sizeof(VBVAQUERYMODEHINTS)
|
|---|
| 381 | + cScreens * sizeof(VBVAMODEHINT),
|
|---|
| 382 | HGSMI_CH_VBVA, VBVA_QUERY_MODE_HINTS);
|
|---|
| 383 | if (pQuery != NULL)
|
|---|
| 384 | {
|
|---|
| 385 | pQuery->cHintsQueried = cScreens;
|
|---|
| 386 | pQuery->cbHintStructureGuest = sizeof(VBVAMODEHINT);
|
|---|
| 387 | pQuery->rc = VERR_NOT_SUPPORTED;
|
|---|
| 388 |
|
|---|
| 389 | VBoxHGSMIBufferSubmit(pCtx, pQuery);
|
|---|
| 390 | rc = pQuery->rc;
|
|---|
| 391 | if (RT_SUCCESS(rc))
|
|---|
| 392 | memcpy(paHints, (void *)(pQuery + 1), cScreens * sizeof(VBVAMODEHINT));
|
|---|
| 393 |
|
|---|
| 394 | VBoxHGSMIBufferFree(pCtx, pQuery);
|
|---|
| 395 | }
|
|---|
| 396 | else
|
|---|
| 397 | {
|
|---|
| 398 | // LogFunc(("HGSMIHeapAlloc failed\n"));
|
|---|
| 399 | rc = VERR_NO_MEMORY;
|
|---|
| 400 | }
|
|---|
| 401 | return rc;
|
|---|
| 402 | }
|
|---|
| 403 |
|
|---|
| 404 |
|
|---|
| 405 | /**
|
|---|
| 406 | * Query the supported flags in VBVAINFOSCREEN::u16Flags.
|
|---|
| 407 | *
|
|---|
| 408 | * @returns The mask of VBVA_SCREEN_F_* flags or 0 if host does not support the request.
|
|---|
| 409 | * @param pCtx the context containing the heap to use
|
|---|
| 410 | */
|
|---|
| 411 | DECLHIDDEN(uint16_t) VBoxHGSMIGetScreenFlags(PHGSMIGUESTCOMMANDCONTEXT pCtx)
|
|---|
| 412 | {
|
|---|
| 413 | uint32_t u32Flags = 0;
|
|---|
| 414 | int rc = VBoxQueryConfHGSMI(pCtx, VBOX_VBVA_CONF32_SCREEN_FLAGS, &u32Flags);
|
|---|
| 415 | // LogFunc(("u32Flags = 0x%x rc %Rrc\n", u32Flags, rc));
|
|---|
| 416 | if (RT_FAILURE(rc) || u32Flags > UINT16_MAX)
|
|---|
| 417 | u32Flags = 0;
|
|---|
| 418 | return (uint16_t)u32Flags;
|
|---|
| 419 | }
|
|---|
