diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxVideo/Modesetting.cpp')
| -rw-r--r-- | src/VBox/Additions/common/VBoxVideo/Modesetting.cpp | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxVideo/Modesetting.cpp b/src/VBox/Additions/common/VBoxVideo/Modesetting.cpp new file mode 100644 index 00000000..956f754f --- /dev/null +++ b/src/VBox/Additions/common/VBoxVideo/Modesetting.cpp @@ -0,0 +1,419 @@ +/* $Id: Modesetting.cpp $ */ +/** @file + * VirtualBox Video driver, common code - HGSMI initialisation and helper + * functions. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <VBoxVideoGuest.h> +#include <VBoxVideoVBE.h> +#include <HGSMIChannels.h> + +#ifndef VBOX_GUESTR3XF86MOD +# include <VBoxVideoIPRT.h> +#endif + +/** + * Gets the count of virtual monitors attached to the guest via an HGSMI + * command + * + * @returns the right count on success or 1 on failure. + * @param pCtx the context containing the heap to use + */ +DECLHIDDEN(uint32_t) VBoxHGSMIGetMonitorCount(PHGSMIGUESTCOMMANDCONTEXT pCtx) +{ + /* Query the configured number of displays. */ + uint32_t cDisplays = 0; + VBoxQueryConfHGSMI(pCtx, VBOX_VBVA_CONF32_MONITOR_COUNT, &cDisplays); + // LogFunc(("cDisplays = %d\n", cDisplays)); + if (cDisplays == 0 || cDisplays > VBOX_VIDEO_MAX_SCREENS) + /* Host reported some bad value. Continue in the 1 screen mode. */ + cDisplays = 1; + return cDisplays; +} + + +/** + * Query whether the virtual hardware supports VBE_DISPI_ID_CFG + * and set the interface. + * + * @returns Whether the interface is supported. + */ +DECLHIDDEN(bool) VBoxVGACfgAvailable(void) +{ + uint16_t DispiId; + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ID); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_ID_CFG); + DispiId = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + return (DispiId == VBE_DISPI_ID_CFG); +} + + +/** + * Query a configuration value from the virtual hardware which supports VBE_DISPI_ID_CFG. + * I.e. use this function only if VBoxVGACfgAvailable returns true. + * + * @returns Whether the value is supported. + * @param u16Id Identifier of the configuration value (VBE_DISPI_CFG_ID_*). + * @param pu32Value Where to store value from the host. + * @param u32DefValue What to assign to *pu32Value if the value is not supported. + */ +DECLHIDDEN(bool) VBoxVGACfgQuery(uint16_t u16Id, uint32_t *pu32Value, uint32_t u32DefValue) +{ + uint32_t u32; + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_CFG); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_CFG_MASK_SUPPORT | u16Id); + u32 = VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA); + if (u32) + { + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, u16Id); + *pu32Value = VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA); + return true; + } + + *pu32Value = u32DefValue; + return false; +} + + +/** + * Returns the size of the video RAM in bytes. + * + * @returns the size + */ +DECLHIDDEN(uint32_t) VBoxVideoGetVRAMSize(void) +{ + /** @note A 32bit read on this port returns the VRAM size if interface is older than VBE_DISPI_ID_CFG. */ + return VBVO_PORT_READ_U32(VBE_DISPI_IOPORT_DATA); +} + + +/** + * Check whether this hardware allows the display width to have non-multiple- + * of-eight values. + * + * @returns true if any width is allowed, false otherwise. + */ +DECLHIDDEN(bool) VBoxVideoAnyWidthAllowed(void) +{ + unsigned DispiId; + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ID); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, VBE_DISPI_ID_ANYX); + DispiId = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + return (DispiId == VBE_DISPI_ID_ANYX); +} + + +/** + * Tell the host about how VRAM is divided up between each screen via an HGSMI + * command. It is acceptable to specifiy identical data for each screen if + * they share a single framebuffer. + * + * @returns iprt status code, either VERR_NO_MEMORY or the status returned by + * @a pfnFill + * @todo What was I thinking of with that callback function? It + * would be much simpler to just pass in a structure in normal + * memory and copy it. + * @param pCtx the context containing the heap to use + * @param u32Count the number of screens we are activating + * @param pfnFill a callback which initialises the VBVAINFOVIEW structures + * for all screens + * @param pvData context data for @a pfnFill + */ +DECLHIDDEN(int) VBoxHGSMISendViewInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx, + uint32_t u32Count, + PFNHGSMIFILLVIEWINFO pfnFill, + void *pvData) +{ + int rc; + /* Issue the screen info command. */ + VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_HOST *pInfo = + (VBVAINFOVIEW RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAINFOVIEW) * u32Count, + HGSMI_CH_VBVA, VBVA_INFO_VIEW); + if (pInfo) + { + rc = pfnFill(pvData, (VBVAINFOVIEW *)pInfo /* lazy bird */, u32Count); + if (RT_SUCCESS(rc)) + VBoxHGSMIBufferSubmit(pCtx, pInfo); + VBoxHGSMIBufferFree(pCtx, pInfo); + } + else + rc = VERR_NO_MEMORY; + return rc; +} + + +/** + * Set a video mode using port registers. This must be done for the first + * screen before every HGSMI modeset and also works when HGSM is not enabled. + * @param cWidth the mode width + * @param cHeight the mode height + * @param cVirtWidth the mode pitch + * @param cBPP the colour depth of the mode + * @param fFlags flags for the mode. These will be or-ed with the + * default _ENABLED flag, so unless you are restoring + * a saved mode or have special requirements you can pass + * zero here. + * @param cx the horizontal panning offset + * @param cy the vertical panning offset + */ +DECLHIDDEN(void) VBoxVideoSetModeRegisters(uint16_t cWidth, uint16_t cHeight, + uint16_t cVirtWidth, uint16_t cBPP, + uint16_t fFlags, uint16_t cx, + uint16_t cy) +{ + /* set the mode characteristics */ + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_XRES); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cWidth); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_YRES); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cHeight); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_VIRT_WIDTH); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cVirtWidth); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_BPP); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cBPP); + /* enable the mode */ + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, fFlags | VBE_DISPI_ENABLED); + /* Panning registers */ + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_X_OFFSET); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cx); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_Y_OFFSET); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, cy); + /** @todo read from the port to see if the mode switch was successful */ +} + + +/** + * Get the video mode for the first screen using the port registers. All + * parameters are optional + * @returns true if the VBE mode returned is active, false if we are in VGA + * mode + * @note If anyone else needs additional register values just extend the + * function with additional parameters and fix any existing callers. + * @param pcWidth where to store the mode width + * @param pcHeight where to store the mode height + * @param pcVirtWidth where to store the mode pitch + * @param pcBPP where to store the colour depth of the mode + * @param pfFlags where to store the flags for the mode + */ +DECLHIDDEN(bool) VBoxVideoGetModeRegisters(uint16_t *pcWidth, uint16_t *pcHeight, + uint16_t *pcVirtWidth, uint16_t *pcBPP, + uint16_t *pfFlags) +{ + uint16_t fFlags; + + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE); + fFlags = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + if (pcWidth) + { + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_XRES); + *pcWidth = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + } + if (pcHeight) + { + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_YRES); + *pcHeight = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + } + if (pcVirtWidth) + { + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_VIRT_WIDTH); + *pcVirtWidth = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + } + if (pcBPP) + { + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_BPP); + *pcBPP = VBVO_PORT_READ_U16(VBE_DISPI_IOPORT_DATA); + } + if (pfFlags) + *pfFlags = fFlags; + return RT_BOOL(fFlags & VBE_DISPI_ENABLED); +} + + +/** + * Disable our extended graphics mode and go back to VGA mode. + */ +DECLHIDDEN(void) VBoxVideoDisableVBE(void) +{ + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_INDEX, VBE_DISPI_INDEX_ENABLE); + VBVO_PORT_WRITE_U16(VBE_DISPI_IOPORT_DATA, 0); +} + + +/** + * Set a video mode via an HGSMI request. The views must have been + * initialised first using @a VBoxHGSMISendViewInfo and if the mode is being + * set on the first display then it must be set first using registers. + * @param pCtx The context containing the heap to use. + * @param cDisplay the screen number + * @param cOriginX the horizontal displacement relative to the first screen + * @param cOriginY the vertical displacement relative to the first screen + * @param offStart the offset of the visible area of the framebuffer + * relative to the framebuffer start + * @param cbPitch the offset in bytes between the starts of two adjecent + * scan lines in video RAM + * @param cWidth the mode width + * @param cHeight the mode height + * @param cBPP the colour depth of the mode + * @param fFlags flags + */ +DECLHIDDEN(void) VBoxHGSMIProcessDisplayInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx, + uint32_t cDisplay, + int32_t cOriginX, + int32_t cOriginY, + uint32_t offStart, + uint32_t cbPitch, + uint32_t cWidth, + uint32_t cHeight, + uint16_t cBPP, + uint16_t fFlags) +{ + /* Issue the screen info command. */ + VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_HOST *pScreen = + (VBVAINFOSCREEN RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAINFOSCREEN), + HGSMI_CH_VBVA, VBVA_INFO_SCREEN); + if (pScreen != NULL) + { + pScreen->u32ViewIndex = cDisplay; + pScreen->i32OriginX = cOriginX; + pScreen->i32OriginY = cOriginY; + pScreen->u32StartOffset = offStart; + pScreen->u32LineSize = cbPitch; + pScreen->u32Width = cWidth; + pScreen->u32Height = cHeight; + pScreen->u16BitsPerPixel = cBPP; + pScreen->u16Flags = fFlags; + + VBoxHGSMIBufferSubmit(pCtx, pScreen); + + VBoxHGSMIBufferFree(pCtx, pScreen); + } + else + { + // LogFunc(("HGSMIHeapAlloc failed\n")); + } +} + + +/** Report the rectangle relative to which absolute pointer events should be + * expressed. This information remains valid until the next VBVA resize event + * for any screen, at which time it is reset to the bounding rectangle of all + * virtual screens. + * @param pCtx The context containing the heap to use. + * @param cOriginX Upper left X co-ordinate relative to the first screen. + * @param cOriginY Upper left Y co-ordinate relative to the first screen. + * @param cWidth Rectangle width. + * @param cHeight Rectangle height. + * @returns iprt status code. + * @returns VERR_NO_MEMORY HGSMI heap allocation failed. + */ +DECLHIDDEN(int) VBoxHGSMIUpdateInputMapping(PHGSMIGUESTCOMMANDCONTEXT pCtx, int32_t cOriginX, int32_t cOriginY, + uint32_t cWidth, uint32_t cHeight) +{ + int rc; + VBVAREPORTINPUTMAPPING *p; + // Log(("%s: cOriginX=%d, cOriginY=%d, cWidth=%u, cHeight=%u\n", __PRETTY_FUNCTION__, (int)cOriginX, (int)cOriginX, + // (unsigned)cWidth, (unsigned)cHeight)); + + /* Allocate the IO buffer. */ + p = (VBVAREPORTINPUTMAPPING *)VBoxHGSMIBufferAlloc(pCtx, sizeof(VBVAREPORTINPUTMAPPING), HGSMI_CH_VBVA, + VBVA_REPORT_INPUT_MAPPING); + if (p) + { + /* Prepare data to be sent to the host. */ + p->x = cOriginX; + p->y = cOriginY; + p->cx = cWidth; + p->cy = cHeight; + rc = VBoxHGSMIBufferSubmit(pCtx, p); + /* Free the IO buffer. */ + VBoxHGSMIBufferFree(pCtx, p); + } + else + rc = VERR_NO_MEMORY; + // LogFunc(("rc = %d\n", rc)); + return rc; +} + + +/** + * Get most recent video mode hints. + * @param pCtx the context containing the heap to use + * @param cScreens the number of screens to query hints for, starting at 0. + * @param paHints array of VBVAMODEHINT structures for receiving the hints. + * @returns iprt status code + * @returns VERR_NO_MEMORY HGSMI heap allocation failed. + * @returns VERR_NOT_SUPPORTED Host does not support this command. + */ +DECLHIDDEN(int) VBoxHGSMIGetModeHints(PHGSMIGUESTCOMMANDCONTEXT pCtx, + unsigned cScreens, VBVAMODEHINT *paHints) +{ + int rc; + VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_HOST *pQuery; + + AssertPtrReturn(paHints, VERR_INVALID_POINTER); + pQuery = (VBVAQUERYMODEHINTS RT_UNTRUSTED_VOLATILE_HOST *)VBoxHGSMIBufferAlloc(pCtx, + sizeof(VBVAQUERYMODEHINTS) + + cScreens * sizeof(VBVAMODEHINT), + HGSMI_CH_VBVA, VBVA_QUERY_MODE_HINTS); + if (pQuery != NULL) + { + pQuery->cHintsQueried = cScreens; + pQuery->cbHintStructureGuest = sizeof(VBVAMODEHINT); + pQuery->rc = VERR_NOT_SUPPORTED; + + VBoxHGSMIBufferSubmit(pCtx, pQuery); + rc = pQuery->rc; + if (RT_SUCCESS(rc)) + memcpy(paHints, (void *)(pQuery + 1), cScreens * sizeof(VBVAMODEHINT)); + + VBoxHGSMIBufferFree(pCtx, pQuery); + } + else + { + // LogFunc(("HGSMIHeapAlloc failed\n")); + rc = VERR_NO_MEMORY; + } + return rc; +} + + +/** + * Query the supported flags in VBVAINFOSCREEN::u16Flags. + * + * @returns The mask of VBVA_SCREEN_F_* flags or 0 if host does not support the request. + * @param pCtx the context containing the heap to use + */ +DECLHIDDEN(uint16_t) VBoxHGSMIGetScreenFlags(PHGSMIGUESTCOMMANDCONTEXT pCtx) +{ + uint32_t u32Flags = 0; + int rc = VBoxQueryConfHGSMI(pCtx, VBOX_VBVA_CONF32_SCREEN_FLAGS, &u32Flags); + // LogFunc(("u32Flags = 0x%x rc %Rrc\n", u32Flags, rc)); + if (RT_FAILURE(rc) || u32Flags > UINT16_MAX) + u32Flags = 0; + return (uint16_t)u32Flags; +} |