[Spice-devel] [PATCH win-qxl] Implement custom display resolution
Alon Levy
alevy at redhat.com
Wed May 16 00:07:40 PDT 2012
On Tue, May 15, 2012 at 08:44:13PM +0200, Marc-André Lureau wrote:
> Updated:
> - removed ununsed yoffset
> - removed VIDEO_MODE_NO_OFF_SCREEN usage
> - commented why 2 modes are needed
ACK with one comment handled.
> ---
> display/driver.c | 32 +++++++++++++++
> include/qxl_driver.h | 8 +++-
> miniport/qxl.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++-
> spice-protocol | 2 +-
> 4 files changed, 147 insertions(+), 5 deletions(-)
>
> diff --git a/display/driver.c b/display/driver.c
> index 5c4578c..ef011ad 100644
> --- a/display/driver.c
> +++ b/display/driver.c
> @@ -45,6 +45,7 @@
>
> static DRVFN drv_calls[] = {
> {INDEX_DrvDisableDriver, (PFN)DrvDisableDriver},
> + {INDEX_DrvEscape, (PFN)DrvEscape},
> {INDEX_DrvEnablePDEV, (PFN)DrvEnablePDEV},
> {INDEX_DrvDisablePDEV, (PFN)DrvDisablePDEV},
> {INDEX_DrvCompletePDEV, (PFN)DrvCompletePDEV},
> @@ -252,6 +253,37 @@ BOOL DrvEnableDriver(ULONG engine_version, ULONG enable_data_size, PDRVENABLEDAT
> return TRUE;
> }
>
> +ULONG DrvEscape(SURFOBJ *pso, ULONG iEsc, ULONG cjIn, PVOID pvIn,
> + ULONG cjOut, PVOID pvOut)
> +{
> + PDev* pdev = pso ? (PDev*)pso->dhpdev : NULL;
> + int RetVal = -1;
> +
> + switch (iEsc) {
> + case QXL_ESCAPE_SET_CUSTOM_DISPLAY: {
> + ULONG length;
> +
> + DEBUG_PRINT((pdev, 1, "set custom display %p\n", pdev));
> + if (pdev == NULL)
> + break;
> +
> + if (EngDeviceIoControl(pdev->driver, IOCTL_QXL_SET_CUSTOM_DISPLAY,
> + pvIn, cjIn, NULL, 0, &length)) {
> + DEBUG_PRINT((pdev, 0, "%s: IOCTL_QXL_SET_CUSTOM_DISPLAY failed\n", __FUNCTION__));
> + break;
> + }
> + RetVal = 1;
> + break;
> + }
> + default:
> + DEBUG_PRINT((NULL, 1, "%s: unhandled escape code %d\n", __FUNCTION__, iEsc));
> + RetVal = 0;
> + }
> +
> + DEBUG_PRINT((NULL, 1, "%s: end\n", __FUNCTION__));
> + return RetVal;
> +}
> +
> VOID DrvDisableDriver(VOID)
> {
> DEBUG_PRINT((NULL, 1, "%s\n", __FUNCTION__));
> diff --git a/include/qxl_driver.h b/include/qxl_driver.h
> index af65916..eac6f5f 100644
> --- a/include/qxl_driver.h
> +++ b/include/qxl_driver.h
> @@ -23,6 +23,7 @@
> #define _H_QXL_DRIVER
>
> #include <spice\qxl_dev.h>
> +#include <spice\qxl_windows.h>
>
> #if (WINVER < 0x0501)
> #include "wdmhelper.h"
> @@ -30,12 +31,16 @@
>
> enum {
> FIRST_AVIL_IOCTL_FUNC = 0x800,
> - QXL_GET_INFO_FUNC = FIRST_AVIL_IOCTL_FUNC
> + QXL_GET_INFO_FUNC = FIRST_AVIL_IOCTL_FUNC,
> + QXL_SET_CUSTOM_DISPLAY
> };
>
> #define IOCTL_QXL_GET_INFO \
> CTL_CODE(FILE_DEVICE_VIDEO, QXL_GET_INFO_FUNC, METHOD_BUFFERED, FILE_ANY_ACCESS)
>
> +#define IOCTL_QXL_SET_CUSTOM_DISPLAY \
> + CTL_CODE(FILE_DEVICE_VIDEO, QXL_SET_CUSTOM_DISPLAY, METHOD_BUFFERED, FILE_ANY_ACCESS)
> +
> #define QXL_DRIVER_INFO_VERSION 3
>
> typedef struct MemSlot {
> @@ -116,6 +121,5 @@ typedef struct QXLDriverInfo {
> UINT64 fb_phys;
> } QXLDriverInfo;
>
> -
> #endif
>
> diff --git a/miniport/qxl.c b/miniport/qxl.c
> index aefd780..e9889df 100644
> --- a/miniport/qxl.c
> +++ b/miniport/qxl.c
> @@ -83,6 +83,7 @@ typedef struct QXLExtension {
>
> ULONG current_mode;
> ULONG n_modes;
> + ULONG custom_mode;
> PVIDEO_MODE_INFORMATION modes;
>
> PEVENT display_event;
> @@ -442,6 +443,69 @@ VP_STATUS Prob(QXLExtension *dev, VIDEO_PORT_CONFIG_INFO *conf_info,
> }
>
> #if defined(ALLOC_PRAGMA)
> +void FillVidModeBPP(VIDEO_MODE_INFORMATION *pMode, ULONG bitsR, ULONG bitsG, ULONG bitsB,
> + ULONG maskR, ULONG maskG, ULONG maskB);
> +#pragma alloc_text(PAGE, FillVidModeBPP)
> +#endif
> +
> +/* Fills given video mode BPP related fields */
> +void FillVidModeBPP(VIDEO_MODE_INFORMATION *pMode, ULONG bitsR, ULONG bitsG, ULONG bitsB,
> + ULONG maskR, ULONG maskG, ULONG maskB)
> +{
> + pMode->NumberRedBits = bitsR;
> + pMode->NumberGreenBits = bitsG;
> + pMode->NumberBlueBits = bitsB;
> + pMode->RedMask = maskR;
> + pMode->GreenMask = maskG;
> + pMode->BlueMask = maskB;
> +}
> +
> +#if defined(ALLOC_PRAGMA)
> +VP_STATUS FillVidModeInfo(VIDEO_MODE_INFORMATION *pMode, ULONG xres, ULONG yres, ULONG bpp, ULONG index);
> +#pragma alloc_text(PAGE, FillVidModeInfo)
> +#endif
> +/* Fills given video mode structure */
> +VP_STATUS FillVidModeInfo(VIDEO_MODE_INFORMATION *pMode, ULONG xres, ULONG yres, ULONG bpp, ULONG index)
> +{
> + if (xres <= 0 || yres <= 0)
> + return ERROR_INVALID_DATA;
> +
> + VideoPortZeroMemory(pMode, sizeof(VIDEO_MODE_INFORMATION));
> +
> + /*Common entries*/
> + pMode->Length = sizeof(VIDEO_MODE_INFORMATION);
> + pMode->ModeIndex = index;
> + pMode->VisScreenWidth = xres;
> + pMode->VisScreenHeight = yres;
> + pMode->ScreenStride = xres * ((bpp + 7) / 8);
> + pMode->NumberOfPlanes = 1;
> + pMode->BitsPerPlane = bpp;
> + pMode->Frequency = 60;
> + pMode->XMillimeter = 320;
> + pMode->YMillimeter = 240;
> + pMode->VideoMemoryBitmapWidth = xres;
> + pMode->VideoMemoryBitmapHeight = yres;
> + pMode->DriverSpecificAttributeFlags = 0;
> + pMode->AttributeFlags = VIDEO_MODE_GRAPHICS | VIDEO_MODE_COLOR;
> +
> + /*BPP related entries*/
> + switch (bpp)
> + {
> + case 16:
> + FillVidModeBPP(pMode, 5, 6, 5, 0xF800, 0x7E0, 0x1F);
> + break;
> + case 24:
> + case 32:
> + FillVidModeBPP(pMode, 8, 8, 8, 0xFF0000, 0xFF00, 0xFF);
> + break;
> + default:
> + return ERROR_INVALID_DATA;
> + }
> +
> + return NO_ERROR;
> +}
> +
> +#if defined(ALLOC_PRAGMA)
> VP_STATUS SetVideoModeInfo(QXLExtension *dev, PVIDEO_MODE_INFORMATION video_mode, QXLMode *qxl_mode);
> #pragma alloc_text(PAGE, SetVideoModeInfo)
> #endif
> @@ -550,7 +614,7 @@ VP_STATUS InitModes(QXLExtension *dev)
> return ERROR_NOT_ENOUGH_MEMORY;
> }
> #endif
> - VideoPortZeroMemory(modes_info, sizeof(VIDEO_MODE_INFORMATION) * n_modes);
> + VideoPortZeroMemory(modes_info, sizeof(VIDEO_MODE_INFORMATION) * n_modes + 2);
> for (i = 0; i < n_modes; i++) {
> error = SetVideoModeInfo(dev, &modes_info[i], &modes->modes[i]);
> if (error != NO_ERROR) {
> @@ -559,7 +623,17 @@ VP_STATUS InitModes(QXLExtension *dev)
> return error;
> }
> }
> - dev->n_modes = n_modes;
> +
> + /* 2 dummy modes for custom display resolution */
> + /* This is necessary to bypass Windows mode index check, that
> + would prevent reusing the same index */
> + dev->custom_mode = n_modes;
> + memcpy(&modes_info[n_modes], &modes_info[0], sizeof(VIDEO_MODE_INFORMATION));
> + modes_info[n_modes].ModeIndex = n_modes;
> + memcpy(&modes_info[n_modes + 1], &modes_info[0], sizeof(VIDEO_MODE_INFORMATION));
> + modes_info[n_modes + 1].ModeIndex = n_modes + 1;
> +
> + dev->n_modes = n_modes + 2;
> dev->modes = modes_info;
> DEBUG_PRINT((dev, 0, "%s OK\n", __FUNCTION__));
> return NO_ERROR;
> @@ -912,6 +986,20 @@ PVIDEO_MODE_INFORMATION FindMode(QXLExtension *dev_ext, ULONG mode)
> return NULL;
> }
>
> +static VP_STATUS SetCustomDisplay(QXLExtension *dev_ext, QXLEscapeSetCustomDisplay *custom_display)
> +{
> + /* alternate custom mode index */
> + if (dev_ext->custom_mode == (dev_ext->n_modes - 1))
> + dev_ext->custom_mode = dev_ext->n_modes - 2;
> + else
> + dev_ext->custom_mode = dev_ext->n_modes - 1;
> +
> + return FillVidModeInfo(&dev_ext->modes[dev_ext->custom_mode],
> + custom_display->xres, custom_display->yres,
> + custom_display->bpp,
> + dev_ext->custom_mode);
> +}
> +
> BOOLEAN StartIO(PVOID dev_extension, PVIDEO_REQUEST_PACKET packet)
> {
> QXLExtension *dev_ext = dev_extension;
> @@ -1102,6 +1190,24 @@ BOOLEAN StartIO(PVOID dev_extension, PVIDEO_REQUEST_PACKET packet)
> driver_info->dev_id = dev_ext->rom->id;
> }
> break;
> +
> + case IOCTL_QXL_SET_CUSTOM_DISPLAY: {
> + QXLEscapeSetCustomDisplay *custom_display;
> + DEBUG_PRINT((dev_ext, 0, "%s: IOCTL_QXL_SET_CUSTOM_DISPLAY\n", __FUNCTION__));
> +
> + if (packet->InputBufferLength < sizeof(QXLEscapeSetCustomDisplay)) {
Looking at the other IOCTL's here they also set
packet->StatusBlock->Information at this point, i.e.:
if (packet->OutputBufferLength < (packet->StatusBlock->Information =
dev_ext->n_modes * sizeof(VIDEO_MODE_INFORMATION))) {
> + error = ERROR_INSUFFICIENT_BUFFER;
> + goto err;
> + }
> +
> + custom_display = packet->InputBuffer;
> + DEBUG_PRINT((dev_ext, 0, "%s: %dx%d@%d\n", __FUNCTION__,
> + custom_display->xres, custom_display->yres,
> + custom_display->bpp));
> + SetCustomDisplay(dev_ext, custom_display);
> + }
> + break;
> +
> default:
> DEBUG_PRINT((dev_ext, 0, "%s: invalid command 0x%lx\n", __FUNCTION__, packet->IoControlCode));
> error = ERROR_INVALID_FUNCTION;
> diff --git a/spice-protocol b/spice-protocol
> index 0d01de3..26cd194 160000
> --- a/spice-protocol
> +++ b/spice-protocol
> @@ -1 +1 @@
> -Subproject commit 0d01de3108853e1f7ea026fdbc2feb9183d65dc2
> +Subproject commit 26cd1946a5c959a53c78fa16f1b3e84a9682121b
> --
> 1.7.10.1
>
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