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Diffstat (limited to 'src/smi_shadow.c')
| -rw-r--r-- | src/smi_shadow.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/smi_shadow.c b/src/smi_shadow.c new file mode 100644 index 0000000..5ef9ba5 --- /dev/null +++ b/src/smi_shadow.c @@ -0,0 +1,226 @@ +/* Header: //Mercury/Projects/archives/XFree86/4.0/smi_shadow.c-arc 1.10 30 Nov 2000 11:40:38 Frido $ */ + +/* +Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved. +Copyright (C) 2000 Silicon Motion, Inc. All Rights Reserved. + +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, FIT- +NESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +XFREE86 PROJECT 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. + +Except as contained in this notice, the names of the XFree86 Project and +Silicon Motion shall not be used in advertising or otherwise to promote the +sale, use or other dealings in this Software without prior written +authorization from the XFree86 Project and Silicon Motion. +*/ +/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/siliconmotion/smi_shadow.c,v 1.2 2000/12/05 21:18:37 dawes Exp $ */ + +#include "xf86.h" +#include "xf86_OSproc.h" +#include "xf86Resources.h" +#include "xf86_ansic.h" +#include "xf86PciInfo.h" +#include "xf86Pci.h" +#include "shadowfb.h" +#include "servermd.h" + +#include "smi.h" + +/******************************************************************************\ +|* SMI_RefreshArea +|*============================================================================= +|* +|* PARAMETERS: pScrn Pointer to ScrnInfo structure. +|* num Number of boxes to refresh. +|* pbox Pointer to an array of boxes to refresh. +|* +|* DESCRIPTION: Refresh a portion of the shadow buffer to the visual screen +|* buffer. This is mainly used for rotation purposes. +|* y +|* RETURNS: Nothing. +|* +\******************************************************************************/ +void SMI_RefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox) +{ + SMIPtr pSmi = SMIPTR(pScrn); + int width, height, srcX, srcY, destX, destY; + + ENTER_PROC("SMI_RefreshArea"); + + /* #671 */ + if (pSmi->polyLines) + { + pSmi->polyLines = FALSE; + return; + } + + if (pSmi->rotate) + { + /* IF we need to do rotation, setup the hardware here. */ + WaitIdleEmpty(); + WRITE_DPR(pSmi, 0x10, pSmi->ShadowPitch); + WRITE_DPR(pSmi, 0x3C, pSmi->ShadowPitch); + WRITE_DPR(pSmi, 0x44, pSmi->FBOffset >> 3); + } + + /* #672 */ + if (pSmi->ClipTurnedOn) + { + WaitQueue(1); + WRITE_DPR(pSmi, 0x2C, pSmi->ScissorsLeft); + pSmi->ClipTurnedOn = FALSE; + } + + while (num--) + { + /* Get coordinates of the box to refresh. */ + srcX = pbox->x1; + srcY = pbox->y1; + width = pbox->x2 - srcX; + height = pbox->y2 - srcY; + + DEBUG((VERBLEV, "x=%d y=%d w=%d h=%d\n", srcX, srcY, width, height)); + + if ((width > 0) && (height > 0)) + { + switch (pSmi->rotate) + { + case SMI_ROTATE_CW: + /* 90 degrees CW rotation. Calculate destination + coordinates: + + *---+ + | | +-----* + | | | | destX = shadowHeight - srcY - 1 + | | --> | | destY = srcX + | | | | + | | +-----+ + +---+ + */ + destX = pSmi->ShadowHeight - srcY - 1; + destY = srcX; + + WaitQueue(4); + WRITE_DPR(pSmi, 0x00, (srcX << 16) + srcY); + WRITE_DPR(pSmi, 0x04, (destX << 16) + destY); + WRITE_DPR(pSmi, 0x08, (width << 16) + height); + WRITE_DPR(pSmi, 0x0C, 0xCC | SMI_ROTATE_BLT | + SMI_ROTATE_CW | SMI_START_ENGINE); + break; + + case SMI_ROTATE_CCW: + /* 90 degrees CCW rotatation. Calculate destination + coordinates: + + *---+ + | | +-----+ + | | | | destX = srcY + | | --> | | destY = shadowWidth - srcX - 1 + | | | | + | | *-----+ + +---+ + */ + destX = srcY; + destY = pSmi->ShadowWidth - srcX - 1; + + WaitQueue(4); + WRITE_DPR(pSmi, 0x00, (srcX << 16) + srcY); + WRITE_DPR(pSmi, 0x04, (destX << 16) + destY); + WRITE_DPR(pSmi, 0x08, (width << 16) + height); + WRITE_DPR(pSmi, 0x0C, 0xCC | SMI_ROTATE_BLT | + SMI_ROTATE_CCW | SMI_START_ENGINE); + break; + + default: + /* No rotation, perform a normal copy. */ + if (pScrn->bitsPerPixel == 24) + { + srcX *= 3; + width *= 3; + + if (pSmi->Chipset == SMI_LYNX) + { + srcY *= 3; + } + } + + WaitQueue(4); + WRITE_DPR(pSmi, 0x00, (srcX << 16) + srcY); + WRITE_DPR(pSmi, 0x04, (srcX << 16) + srcY); + WRITE_DPR(pSmi, 0x08, (width << 16) + height); + WRITE_DPR(pSmi, 0x0C, SMI_BITBLT + SMI_START_ENGINE + 0xCC); + break; + } + } + + pbox++; + } + + if (pSmi->rotate) + { + /* If we did a rotation, we need to restore the hardware state here. */ + WaitIdleEmpty(); + WRITE_DPR(pSmi, 0x10, (pSmi->Stride << 16) | pSmi->Stride); + WRITE_DPR(pSmi, 0x3C, (pSmi->Stride << 16) | pSmi->Stride); + WRITE_DPR(pSmi, 0x44, 0); + } + + LEAVE_PROC("SMI_RefreshArea"); +} + +/******************************************************************************\ +|* SMI_PointerMoved +|*============================================================================= +|* +|* PARAMETERS: index Index of current screen. +|* x X location of pointer. +|* y Y location of pointer. +|* +|* DESCRIPTION: Adjust the pointer location if we are in rotation mode. +|* +|* RETURNS: Nothing. +|* +\******************************************************************************/ +void SMI_PointerMoved(int index, int x, int y) +{ + ScrnInfoPtr pScrn = xf86Screens[index]; + SMIPtr pSmi = SMIPTR(pScrn); + int newX, newY; + + switch (pSmi->rotate) + { + case SMI_ROTATE_CW: + /* 90 degrees CW rotation. */ + newX = pScrn->pScreen->height - y - 1; + newY = x; + break; + + case SMI_ROTATE_CCW: + /* 90 degrees CCW rotation. */ + newX = y; + newY = pScrn->pScreen->width - x - 1; + break; + + default: + /* No rotation. */ + newX = x; + newY = y; + break; + } + + /* Pass adjusted pointer coordinates original PointerMoved function. */ + (*pSmi->PointerMoved)(index, newX, newY); +} |