/* $XFree86: xc/lib/GL/dri/XF86dri.c,v 1.13 2002/10/30 12:51:25 alanh Exp $ */ /************************************************************************** Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. Copyright 2000 VA Linux Systems, 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, sub license, 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 (including the next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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. **************************************************************************/ /* * Authors: * Kevin E. Martin * Jens Owen * Rickard E. (Rik) Faith * */ /* THIS IS NOT AN X CONSORTIUM STANDARD */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #define NEED_REPLIES #include #include #include #include "xf86dristr.h" static XExtensionInfo _xf86dri_info_data; static XExtensionInfo *xf86dri_info = &_xf86dri_info_data; static char xf86dri_extension_name[] = XF86DRINAME; #define uniDRICheckExtension(dpy,i,val) \ XextCheckExtension (dpy, i, xf86dri_extension_name, val) /***************************************************************************** * * * private utility routines * * * *****************************************************************************/ static int close_display(Display * dpy, XExtCodes * extCodes); static /* const */ XExtensionHooks xf86dri_extension_hooks = { NULL, /* create_gc */ NULL, /* copy_gc */ NULL, /* flush_gc */ NULL, /* free_gc */ NULL, /* create_font */ NULL, /* free_font */ close_display, /* close_display */ NULL, /* wire_to_event */ NULL, /* event_to_wire */ NULL, /* error */ NULL, /* error_string */ }; static XEXT_GENERATE_FIND_DISPLAY(find_display, xf86dri_info, xf86dri_extension_name, &xf86dri_extension_hooks, 0, NULL) static XEXT_GENERATE_CLOSE_DISPLAY(close_display, xf86dri_info) /***************************************************************************** * * * public XFree86-DRI Extension routines * * * *****************************************************************************/ #if 0 #include #define TRACE(msg) fprintf(stderr,"uniDRI%s\n", msg); #else #define TRACE(msg) #endif Bool uniDRIQueryExtension(dpy, event_basep, error_basep) Display *dpy; int *event_basep, *error_basep; { XExtDisplayInfo *info = find_display(dpy); TRACE("QueryExtension..."); if (XextHasExtension(info)) { *event_basep = info->codes->first_event; *error_basep = info->codes->first_error; TRACE("QueryExtension... return True"); return True; } else { TRACE("QueryExtension... return False"); return False; } } Bool uniDRIQueryVersion(dpy, majorVersion, minorVersion, patchVersion) Display *dpy; int *majorVersion; int *minorVersion; int *patchVersion; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIQueryVersionReply rep; xXF86DRIQueryVersionReq *req; TRACE("QueryVersion..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIQueryVersion, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIQueryVersion; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("QueryVersion... return False"); return False; } *majorVersion = rep.majorVersion; *minorVersion = rep.minorVersion; *patchVersion = rep.patchVersion; UnlockDisplay(dpy); SyncHandle(); TRACE("QueryVersion... return True"); return True; } Bool uniDRIQueryDirectRenderingCapable(dpy, screen, isCapable) Display *dpy; int screen; Bool *isCapable; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIQueryDirectRenderingCapableReply rep; xXF86DRIQueryDirectRenderingCapableReq *req; TRACE("QueryDirectRenderingCapable..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIQueryDirectRenderingCapable, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIQueryDirectRenderingCapable; req->screen = screen; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("QueryDirectRenderingCapable... return False"); return False; } *isCapable = rep.isCapable; UnlockDisplay(dpy); SyncHandle(); TRACE("QueryDirectRenderingCapable... return True"); return True; } Bool uniDRIOpenConnection(dpy, screen, hSAREA, busIdString) Display *dpy; int screen; drm_handle_t *hSAREA; char **busIdString; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIOpenConnectionReply rep; xXF86DRIOpenConnectionReq *req; TRACE("OpenConnection..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIOpenConnection, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIOpenConnection; req->screen = screen; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("OpenConnection... return False"); return False; } *hSAREA = rep.hSAREALow; #ifdef LONG64 if (sizeof(drm_handle_t) == 8) { *hSAREA |= ((unsigned long)rep.hSAREAHigh) << 32; } #endif if (rep.length) { if (!(*busIdString = (char *)Xcalloc(rep.busIdStringLength + 1, 1))) { _XEatData(dpy, ((rep.busIdStringLength + 3) & ~3)); UnlockDisplay(dpy); SyncHandle(); TRACE("OpenConnection... return False"); return False; } _XReadPad(dpy, *busIdString, rep.busIdStringLength); } else { *busIdString = NULL; } UnlockDisplay(dpy); SyncHandle(); TRACE("OpenConnection... return True"); return True; } Bool uniDRIAuthConnection(dpy, screen, magic) Display *dpy; int screen; drm_magic_t magic; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIAuthConnectionReq *req; xXF86DRIAuthConnectionReply rep; TRACE("AuthConnection..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIAuthConnection, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIAuthConnection; req->screen = screen; req->magic = magic; rep.authenticated = 0; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse) || !rep.authenticated) { UnlockDisplay(dpy); SyncHandle(); TRACE("AuthConnection... return False"); return False; } UnlockDisplay(dpy); SyncHandle(); TRACE("AuthConnection... return True"); return True; } Bool uniDRICloseConnection(dpy, screen) Display *dpy; int screen; { XExtDisplayInfo *info = find_display(dpy); xXF86DRICloseConnectionReq *req; TRACE("CloseConnection..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRICloseConnection, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRICloseConnection; req->screen = screen; UnlockDisplay(dpy); SyncHandle(); TRACE("CloseConnection... return True"); return True; } Bool uniDRIGetClientDriverName(dpy, screen, ddxDriverMajorVersion, ddxDriverMinorVersion, ddxDriverPatchVersion, clientDriverName) Display *dpy; int screen; int *ddxDriverMajorVersion; int *ddxDriverMinorVersion; int *ddxDriverPatchVersion; char **clientDriverName; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIGetClientDriverNameReply rep; xXF86DRIGetClientDriverNameReq *req; TRACE("GetClientDriverName..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIGetClientDriverName, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIGetClientDriverName; req->screen = screen; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("GetClientDriverName... return False"); return False; } *ddxDriverMajorVersion = rep.ddxDriverMajorVersion; *ddxDriverMinorVersion = rep.ddxDriverMinorVersion; *ddxDriverPatchVersion = rep.ddxDriverPatchVersion; if (rep.length) { if (!(*clientDriverName = (char *)Xcalloc(rep.clientDriverNameLength + 1, 1))) { _XEatData(dpy, ((rep.clientDriverNameLength + 3) & ~3)); UnlockDisplay(dpy); SyncHandle(); TRACE("GetClientDriverName... return False"); return False; } _XReadPad(dpy, *clientDriverName, rep.clientDriverNameLength); } else { *clientDriverName = NULL; } UnlockDisplay(dpy); SyncHandle(); TRACE("GetClientDriverName... return True"); return True; } Bool uniDRICreateContextWithConfig(dpy, screen, configID, context, hHWContext) Display *dpy; int screen; int configID; XID *context; drm_context_t *hHWContext; { XExtDisplayInfo *info = find_display(dpy); xXF86DRICreateContextReply rep; xXF86DRICreateContextReq *req; TRACE("CreateContext..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRICreateContext, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRICreateContext; req->visual = configID; req->screen = screen; *context = XAllocID(dpy); req->context = *context; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("CreateContext... return False"); return False; } *hHWContext = rep.hHWContext; UnlockDisplay(dpy); SyncHandle(); TRACE("CreateContext... return True"); return True; } Bool uniDRICreateContext(dpy, screen, visual, context, hHWContext) Display *dpy; int screen; Visual *visual; XID *context; drm_context_t *hHWContext; { return uniDRICreateContextWithConfig(dpy, screen, visual->visualid, context, hHWContext); } Bool uniDRIDestroyContext(Display * ndpy, int screen, XID context) { Display *const dpy = (Display *) ndpy; XExtDisplayInfo *info = find_display(dpy); xXF86DRIDestroyContextReq *req; TRACE("DestroyContext..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIDestroyContext, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIDestroyContext; req->screen = screen; req->context = context; UnlockDisplay(dpy); SyncHandle(); TRACE("DestroyContext... return True"); return True; } Bool uniDRICreateDrawable(Display * ndpy, int screen, Drawable drawable, drm_drawable_t * hHWDrawable) { Display *const dpy = (Display *) ndpy; XExtDisplayInfo *info = find_display(dpy); xXF86DRICreateDrawableReply rep; xXF86DRICreateDrawableReq *req; TRACE("CreateDrawable..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRICreateDrawable, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRICreateDrawable; req->screen = screen; req->drawable = drawable; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("CreateDrawable... return False"); return False; } *hHWDrawable = rep.hHWDrawable; UnlockDisplay(dpy); SyncHandle(); TRACE("CreateDrawable... return True"); return True; } Bool uniDRIDestroyDrawable(Display * ndpy, int screen, Drawable drawable) { Display *const dpy = (Display *) ndpy; XExtDisplayInfo *info = find_display(dpy); xXF86DRIDestroyDrawableReq *req; TRACE("DestroyDrawable..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIDestroyDrawable, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIDestroyDrawable; req->screen = screen; req->drawable = drawable; UnlockDisplay(dpy); SyncHandle(); TRACE("DestroyDrawable... return True"); return True; } Bool uniDRIGetDrawableInfo(Display * dpy, int screen, Drawable drawable, unsigned int *index, unsigned int *stamp, int *X, int *Y, int *W, int *H, int *numClipRects, drm_clip_rect_t ** pClipRects, int *backX, int *backY, int *numBackClipRects, drm_clip_rect_t ** pBackClipRects) { XExtDisplayInfo *info = find_display(dpy); xXF86DRIGetDrawableInfoReply rep; xXF86DRIGetDrawableInfoReq *req; int total_rects; TRACE("GetDrawableInfo..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIGetDrawableInfo, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIGetDrawableInfo; req->screen = screen; req->drawable = drawable; if (!_XReply(dpy, (xReply *) & rep, 1, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("GetDrawableInfo... return False"); return False; } *index = rep.drawableTableIndex; *stamp = rep.drawableTableStamp; *X = (int)rep.drawableX; *Y = (int)rep.drawableY; *W = (int)rep.drawableWidth; *H = (int)rep.drawableHeight; *numClipRects = rep.numClipRects; total_rects = *numClipRects; *backX = rep.backX; *backY = rep.backY; *numBackClipRects = rep.numBackClipRects; total_rects += *numBackClipRects; #if 0 /* Because of the fix in Xserver/GL/dri/xf86dri.c, this check breaks * backwards compatibility (Because of the >> 2 shift) but the fix * enables multi-threaded apps to work. */ if (rep.length != ((((SIZEOF(xXF86DRIGetDrawableInfoReply) - SIZEOF(xGenericReply) + total_rects * sizeof(drm_clip_rect_t)) + 3) & ~3) >> 2)) { _XEatData(dpy, rep.length); UnlockDisplay(dpy); SyncHandle(); TRACE("GetDrawableInfo... return False"); return False; } #endif if (*numClipRects) { int len = sizeof(drm_clip_rect_t) * (*numClipRects); *pClipRects = (drm_clip_rect_t *) Xcalloc(len, 1); if (*pClipRects) _XRead(dpy, (char *)*pClipRects, len); } else { *pClipRects = NULL; } if (*numBackClipRects) { int len = sizeof(drm_clip_rect_t) * (*numBackClipRects); *pBackClipRects = (drm_clip_rect_t *) Xcalloc(len, 1); if (*pBackClipRects) _XRead(dpy, (char *)*pBackClipRects, len); } else { *pBackClipRects = NULL; } UnlockDisplay(dpy); SyncHandle(); TRACE("GetDrawableInfo... return True"); return True; } Bool uniDRIGetDeviceInfo(dpy, screen, hFrameBuffer, fbOrigin, fbSize, fbStride, devPrivateSize, pDevPrivate) Display *dpy; int screen; drm_handle_t *hFrameBuffer; int *fbOrigin; int *fbSize; int *fbStride; int *devPrivateSize; void **pDevPrivate; { XExtDisplayInfo *info = find_display(dpy); xXF86DRIGetDeviceInfoReply rep; xXF86DRIGetDeviceInfoReq *req; TRACE("GetDeviceInfo..."); uniDRICheckExtension(dpy, info, False); LockDisplay(dpy); GetReq(XF86DRIGetDeviceInfo, req); req->reqType = info->codes->major_opcode; req->driReqType = X_XF86DRIGetDeviceInfo; req->screen = screen; if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) { UnlockDisplay(dpy); SyncHandle(); TRACE("GetDeviceInfo... return False"); return False; } *hFrameBuffer = rep.hFrameBufferLow; #ifdef LONG64 if (sizeof(drm_handle_t) == 8) { *hFrameBuffer |= ((unsigned long)rep.hFrameBufferHigh) << 32; } #endif *fbOrigin = rep.framebufferOrigin; *fbSize = rep.framebufferSize; *fbStride = rep.framebufferStride; *devPrivateSize = rep.devPrivateSize; if (rep.length) { if (!(*pDevPrivate = (void *)Xcalloc(rep.devPrivateSize, 1))) { _XEatData(dpy, ((rep.devPrivateSize + 3) & ~3)); UnlockDisplay(dpy); SyncHandle(); TRACE("GetDeviceInfo... return False"); return False; } _XRead(dpy, (char *)*pDevPrivate, rep.devPrivateSize); } else { *pDevPrivate = NULL; } UnlockDisplay(dpy); SyncHandle(); TRACE("GetDeviceInfo... return True"); return True; } 'n428' href='#n428'>428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 
/* $Id$
 * ffb_context.c: Creator/Creator3D DRI/DRM context switching.
 *
 * Copyright (C) 2000 David S. Miller (davem@redhat.com)
 *
 * Almost entirely stolen from tdfx_context.c, see there
 * for authors.
 */

#include <linux/sched.h>
#include <asm/upa.h>

#include "drmP.h"
#include "ffb_drv.h"

static int ffb_alloc_queue(struct drm_device * dev, int is_2d_only) {
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int i;

	for (i = 0; i < FFB_MAX_CTXS; i++) {
		if (fpriv->hw_state[i] == NULL)
			break;
	}
	if (i == FFB_MAX_CTXS)
		return -1;

	fpriv->hw_state[i] = kmalloc(sizeof(struct ffb_hw_context), GFP_KERNEL);
	if (fpriv->hw_state[i] == NULL)
		return -1;

	fpriv->hw_state[i]->is_2d_only = is_2d_only;

	/* Plus one because 0 is the special DRM_KERNEL_CONTEXT. */
	return i + 1;
}

static void ffb_save_context(ffb_dev_priv_t * fpriv, int idx)
{
	ffb_fbcPtr ffb = fpriv->regs;
	struct ffb_hw_context *ctx;
	int i;

	ctx = fpriv->hw_state[idx - 1];
	if (idx == 0 || ctx == NULL)
		return;

	if (ctx->is_2d_only) {
		/* 2D applications only care about certain pieces
		 * of state.
		 */
		ctx->drawop = upa_readl(&ffb->drawop);
		ctx->ppc = upa_readl(&ffb->ppc);
		ctx->wid = upa_readl(&ffb->wid);
		ctx->fg = upa_readl(&ffb->fg);
		ctx->bg = upa_readl(&ffb->bg);
		ctx->xclip = upa_readl(&ffb->xclip);
		ctx->fbc = upa_readl(&ffb->fbc);
		ctx->rop = upa_readl(&ffb->rop);
		ctx->cmp = upa_readl(&ffb->cmp);
		ctx->matchab = upa_readl(&ffb->matchab);
		ctx->magnab = upa_readl(&ffb->magnab);
		ctx->pmask = upa_readl(&ffb->pmask);
		ctx->xpmask = upa_readl(&ffb->xpmask);
		ctx->lpat = upa_readl(&ffb->lpat);
		ctx->fontxy = upa_readl(&ffb->fontxy);
		ctx->fontw = upa_readl(&ffb->fontw);
		ctx->fontinc = upa_readl(&ffb->fontinc);

		/* stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			ctx->stencil = upa_readl(&ffb->stencil);
			ctx->stencilctl = upa_readl(&ffb->stencilctl);
		}

		for (i = 0; i < 32; i++)
			ctx->area_pattern[i] = upa_readl(&ffb->pattern[i]);
		ctx->ucsr = upa_readl(&ffb->ucsr);
		return;
	}

	/* Fetch drawop. */
	ctx->drawop = upa_readl(&ffb->drawop);

	/* If we were saving the vertex registers, this is where
	 * we would do it.  We would save 32 32-bit words starting
	 * at ffb->suvtx.
	 */

	/* Capture rendering attributes. */

	ctx->ppc = upa_readl(&ffb->ppc);	/* Pixel Processor Control */
	ctx->wid = upa_readl(&ffb->wid);	/* Current WID */
	ctx->fg = upa_readl(&ffb->fg);	/* Constant FG color */
	ctx->bg = upa_readl(&ffb->bg);	/* Constant BG color */
	ctx->consty = upa_readl(&ffb->consty);	/* Constant Y */
	ctx->constz = upa_readl(&ffb->constz);	/* Constant Z */
	ctx->xclip = upa_readl(&ffb->xclip);	/* X plane clip */
	ctx->dcss = upa_readl(&ffb->dcss);	/* Depth Cue Scale Slope */
	ctx->vclipmin = upa_readl(&ffb->vclipmin);	/* Primary XY clip, minimum */
	ctx->vclipmax = upa_readl(&ffb->vclipmax);	/* Primary XY clip, maximum */
	ctx->vclipzmin = upa_readl(&ffb->vclipzmin);	/* Primary Z clip, minimum */
	ctx->vclipzmax = upa_readl(&ffb->vclipzmax);	/* Primary Z clip, maximum */
	ctx->dcsf = upa_readl(&ffb->dcsf);	/* Depth Cue Scale Front Bound */
	ctx->dcsb = upa_readl(&ffb->dcsb);	/* Depth Cue Scale Back Bound */
	ctx->dczf = upa_readl(&ffb->dczf);	/* Depth Cue Scale Z Front */
	ctx->dczb = upa_readl(&ffb->dczb);	/* Depth Cue Scale Z Back */
	ctx->blendc = upa_readl(&ffb->blendc);	/* Alpha Blend Control */
	ctx->blendc1 = upa_readl(&ffb->blendc1);	/* Alpha Blend Color 1 */
	ctx->blendc2 = upa_readl(&ffb->blendc2);	/* Alpha Blend Color 2 */
	ctx->fbc = upa_readl(&ffb->fbc);	/* Frame Buffer Control */
	ctx->rop = upa_readl(&ffb->rop);	/* Raster Operation */
	ctx->cmp = upa_readl(&ffb->cmp);	/* Compare Controls */
	ctx->matchab = upa_readl(&ffb->matchab);	/* Buffer A/B Match Ops */
	ctx->matchc = upa_readl(&ffb->matchc);	/* Buffer C Match Ops */
	ctx->magnab = upa_readl(&ffb->magnab);	/* Buffer A/B Magnitude Ops */
	ctx->magnc = upa_readl(&ffb->magnc);	/* Buffer C Magnitude Ops */
	ctx->pmask = upa_readl(&ffb->pmask);	/* RGB Plane Mask */
	ctx->xpmask = upa_readl(&ffb->xpmask);	/* X Plane Mask */
	ctx->ypmask = upa_readl(&ffb->ypmask);	/* Y Plane Mask */
	ctx->zpmask = upa_readl(&ffb->zpmask);	/* Z Plane Mask */

	/* Auxiliary Clips. */
	ctx->auxclip0min = upa_readl(&ffb->auxclip[0].min);
	ctx->auxclip0max = upa_readl(&ffb->auxclip[0].max);
	ctx->auxclip1min = upa_readl(&ffb->auxclip[1].min);
	ctx->auxclip1max = upa_readl(&ffb->auxclip[1].max);
	ctx->auxclip2min = upa_readl(&ffb->auxclip[2].min);
	ctx->auxclip2max = upa_readl(&ffb->auxclip[2].max);
	ctx->auxclip3min = upa_readl(&ffb->auxclip[3].min);
	ctx->auxclip3max = upa_readl(&ffb->auxclip[3].max);

	ctx->lpat = upa_readl(&ffb->lpat);	/* Line Pattern */
	ctx->fontxy = upa_readl(&ffb->fontxy);	/* XY Font Coordinate */
	ctx->fontw = upa_readl(&ffb->fontw);	/* Font Width */
	ctx->fontinc = upa_readl(&ffb->fontinc);	/* Font X/Y Increment */

	/* These registers/features only exist on FFB2 and later chips. */
	if (fpriv->ffb_type >= ffb2_prototype) {
		ctx->dcss1 = upa_readl(&ffb->dcss1);	/* Depth Cue Scale Slope 1 */
		ctx->dcss2 = upa_readl(&ffb->dcss2);	/* Depth Cue Scale Slope 2 */
		ctx->dcss2 = upa_readl(&ffb->dcss3);	/* Depth Cue Scale Slope 3 */
		ctx->dcs2 = upa_readl(&ffb->dcs2);	/* Depth Cue Scale 2 */
		ctx->dcs3 = upa_readl(&ffb->dcs3);	/* Depth Cue Scale 3 */
		ctx->dcs4 = upa_readl(&ffb->dcs4);	/* Depth Cue Scale 4 */
		ctx->dcd2 = upa_readl(&ffb->dcd2);	/* Depth Cue Depth 2 */
		ctx->dcd3 = upa_readl(&ffb->dcd3);	/* Depth Cue Depth 3 */
		ctx->dcd4 = upa_readl(&ffb->dcd4);	/* Depth Cue Depth 4 */

		/* And stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			ctx->stencil = upa_readl(&ffb->stencil);
			ctx->stencilctl = upa_readl(&ffb->stencilctl);
		}
	}

	/* Save the 32x32 area pattern. */
	for (i = 0; i < 32; i++)
		ctx->area_pattern[i] = upa_readl(&ffb->pattern[i]);

	/* Finally, stash away the User Constol/Status Register. */
	ctx->ucsr = upa_readl(&ffb->ucsr);
}

static void ffb_restore_context(ffb_dev_priv_t * fpriv, int old, int idx)
{
	ffb_fbcPtr ffb = fpriv->regs;
	struct ffb_hw_context *ctx;
	int i;

	ctx = fpriv->hw_state[idx - 1];
	if (idx == 0 || ctx == NULL)
		return;

	if (ctx->is_2d_only) {
		/* 2D applications only care about certain pieces
		 * of state.
		 */
		upa_writel(ctx->drawop, &ffb->drawop);

		/* If we were restoring the vertex registers, this is where
		 * we would do it.  We would restore 32 32-bit words starting
		 * at ffb->suvtx.
		 */

		upa_writel(ctx->ppc, &ffb->ppc);
		upa_writel(ctx->wid, &ffb->wid);
		upa_writel(ctx->fg, &ffb->fg);
		upa_writel(ctx->bg, &ffb->bg);
		upa_writel(ctx->xclip, &ffb->xclip);
		upa_writel(ctx->fbc, &ffb->fbc);
		upa_writel(ctx->rop, &ffb->rop);
		upa_writel(ctx->cmp, &ffb->cmp);
		upa_writel(ctx->matchab, &ffb->matchab);
		upa_writel(ctx->magnab, &ffb->magnab);
		upa_writel(ctx->pmask, &ffb->pmask);
		upa_writel(ctx->xpmask, &ffb->xpmask);
		upa_writel(ctx->lpat, &ffb->lpat);
		upa_writel(ctx->fontxy, &ffb->fontxy);
		upa_writel(ctx->fontw, &ffb->fontw);
		upa_writel(ctx->fontinc, &ffb->fontinc);

		/* stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			upa_writel(ctx->stencil, &ffb->stencil);
			upa_writel(ctx->stencilctl, &ffb->stencilctl);
			upa_writel(0x80000000, &ffb->fbc);
			upa_writel((ctx->stencilctl | 0x80000),
				   &ffb->rawstencilctl);
			upa_writel(ctx->fbc, &ffb->fbc);
		}

		for (i = 0; i < 32; i++)
			upa_writel(ctx->area_pattern[i], &ffb->pattern[i]);
		upa_writel((ctx->ucsr & 0xf0000), &ffb->ucsr);
		return;
	}

	/* Restore drawop. */
	upa_writel(ctx->drawop, &ffb->drawop);

	/* If we were restoring the vertex registers, this is where
	 * we would do it.  We would restore 32 32-bit words starting
	 * at ffb->suvtx.
	 */

	/* Restore rendering attributes. */

	upa_writel(ctx->ppc, &ffb->ppc);	/* Pixel Processor Control */
	upa_writel(ctx->wid, &ffb->wid);	/* Current WID */
	upa_writel(ctx->fg, &ffb->fg);	/* Constant FG color */
	upa_writel(ctx->bg, &ffb->bg);	/* Constant BG color */
	upa_writel(ctx->consty, &ffb->consty);	/* Constant Y */
	upa_writel(ctx->constz, &ffb->constz);	/* Constant Z */
	upa_writel(ctx->xclip, &ffb->xclip);	/* X plane clip */
	upa_writel(ctx->dcss, &ffb->dcss);	/* Depth Cue Scale Slope */
	upa_writel(ctx->vclipmin, &ffb->vclipmin);	/* Primary XY clip, minimum */
	upa_writel(ctx->vclipmax, &ffb->vclipmax);	/* Primary XY clip, maximum */
	upa_writel(ctx->vclipzmin, &ffb->vclipzmin);	/* Primary Z clip, minimum */
	upa_writel(ctx->vclipzmax, &ffb->vclipzmax);	/* Primary Z clip, maximum */
	upa_writel(ctx->dcsf, &ffb->dcsf);	/* Depth Cue Scale Front Bound */
	upa_writel(ctx->dcsb, &ffb->dcsb);	/* Depth Cue Scale Back Bound */
	upa_writel(ctx->dczf, &ffb->dczf);	/* Depth Cue Scale Z Front */
	upa_writel(ctx->dczb, &ffb->dczb);	/* Depth Cue Scale Z Back */
	upa_writel(ctx->blendc, &ffb->blendc);	/* Alpha Blend Control */
	upa_writel(ctx->blendc1, &ffb->blendc1);	/* Alpha Blend Color 1 */
	upa_writel(ctx->blendc2, &ffb->blendc2);	/* Alpha Blend Color 2 */
	upa_writel(ctx->fbc, &ffb->fbc);	/* Frame Buffer Control */
	upa_writel(ctx->rop, &ffb->rop);	/* Raster Operation */
	upa_writel(ctx->cmp, &ffb->cmp);	/* Compare Controls */
	upa_writel(ctx->matchab, &ffb->matchab);	/* Buffer A/B Match Ops */
	upa_writel(ctx->matchc, &ffb->matchc);	/* Buffer C Match Ops */
	upa_writel(ctx->magnab, &ffb->magnab);	/* Buffer A/B Magnitude Ops */
	upa_writel(ctx->magnc, &ffb->magnc);	/* Buffer C Magnitude Ops */
	upa_writel(ctx->pmask, &ffb->pmask);	/* RGB Plane Mask */
	upa_writel(ctx->xpmask, &ffb->xpmask);	/* X Plane Mask */
	upa_writel(ctx->ypmask, &ffb->ypmask);	/* Y Plane Mask */
	upa_writel(ctx->zpmask, &ffb->zpmask);	/* Z Plane Mask */

	/* Auxiliary Clips. */
	upa_writel(ctx->auxclip0min, &ffb->auxclip[0].min);
	upa_writel(ctx->auxclip0max, &ffb->auxclip[0].max);
	upa_writel(ctx->auxclip1min, &ffb->auxclip[1].min);
	upa_writel(ctx->auxclip1max, &ffb->auxclip[1].max);
	upa_writel(ctx->auxclip2min, &ffb->auxclip[2].min);
	upa_writel(ctx->auxclip2max, &ffb->auxclip[2].max);
	upa_writel(ctx->auxclip3min, &ffb->auxclip[3].min);
	upa_writel(ctx->auxclip3max, &ffb->auxclip[3].max);

	upa_writel(ctx->lpat, &ffb->lpat);	/* Line Pattern */
	upa_writel(ctx->fontxy, &ffb->fontxy);	/* XY Font Coordinate */
	upa_writel(ctx->fontw, &ffb->fontw);	/* Font Width */
	upa_writel(ctx->fontinc, &ffb->fontinc);	/* Font X/Y Increment */

	/* These registers/features only exist on FFB2 and later chips. */
	if (fpriv->ffb_type >= ffb2_prototype) {
		upa_writel(ctx->dcss1, &ffb->dcss1);	/* Depth Cue Scale Slope 1 */
		upa_writel(ctx->dcss2, &ffb->dcss2);	/* Depth Cue Scale Slope 2 */
		upa_writel(ctx->dcss3, &ffb->dcss2);	/* Depth Cue Scale Slope 3 */
		upa_writel(ctx->dcs2, &ffb->dcs2);	/* Depth Cue Scale 2 */
		upa_writel(ctx->dcs3, &ffb->dcs3);	/* Depth Cue Scale 3 */
		upa_writel(ctx->dcs4, &ffb->dcs4);	/* Depth Cue Scale 4 */
		upa_writel(ctx->dcd2, &ffb->dcd2);	/* Depth Cue Depth 2 */
		upa_writel(ctx->dcd3, &ffb->dcd3);	/* Depth Cue Depth 3 */
		upa_writel(ctx->dcd4, &ffb->dcd4);	/* Depth Cue Depth 4 */

		/* And stencil/stencilctl only exists on FFB2+ and later
		 * due to the introduction of 3DRAM-III.
		 */
		if (fpriv->ffb_type == ffb2_vertical_plus ||
		    fpriv->ffb_type == ffb2_horizontal_plus) {
			/* Unfortunately, there is a hardware bug on
			 * the FFB2+ chips which prevents a normal write
			 * to the stencil control register from working
			 * as it should.
			 *
			 * The state controlled by the FFB stencilctl register
			 * really gets transferred to the per-buffer instances
			 * of the stencilctl register in the 3DRAM chips.
			 *
			 * The bug is that FFB does not update buffer C correctly,
			 * so we have to do it by hand for them.
			 */

			/* This will update buffers A and B. */
			upa_writel(ctx->stencil, &ffb->stencil);
			upa_writel(ctx->stencilctl, &ffb->stencilctl);

			/* Force FFB to use buffer C 3dram regs. */
			upa_writel(0x80000000, &ffb->fbc);
			upa_writel((ctx->stencilctl | 0x80000),
				   &ffb->rawstencilctl);

			/* Now restore the correct FBC controls. */
			upa_writel(ctx->fbc, &ffb->fbc);
		}
	}

	/* Restore the 32x32 area pattern. */
	for (i = 0; i < 32; i++)
		upa_writel(ctx->area_pattern[i], &ffb->pattern[i]);

	/* Finally, stash away the User Constol/Status Register.
	 * The only state we really preserve here is the picking
	 * control.
	 */
	upa_writel((ctx->ucsr & 0xf0000), &ffb->ucsr);
}

#define FFB_UCSR_FB_BUSY       0x01000000
#define FFB_UCSR_RP_BUSY       0x02000000
#define FFB_UCSR_ALL_BUSY      (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)

static void FFBWait(ffb_fbcPtr ffb)
{
	int limit = 100000;

	do {
		u32 regval = upa_readl(&ffb->ucsr);

		if ((regval & FFB_UCSR_ALL_BUSY) == 0)
			break;
	} while (--limit);
}

int ffb_context_switch(struct drm_device * dev, int old, int new) {
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;

#if DRM_DMA_HISTOGRAM
	dev->ctx_start = get_cycles();
#endif

	DRM_DEBUG("Context switch from %d to %d\n", old, new);

	if (new == dev->last_context || dev->last_context == 0) {
		dev->last_context = new;
		return 0;
	}

	FFBWait(fpriv->regs);
	ffb_save_context(fpriv, old);
	ffb_restore_context(fpriv, old, new);
	FFBWait(fpriv->regs);

	dev->last_context = new;

	return 0;
}

int ffb_resctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_ctx_res_t res;
	drm_ctx_t ctx;
	int i;

	DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
	if (copy_from_user(&res, (drm_ctx_res_t __user *) arg, sizeof(res)))
		return -EFAULT;
	if (res.count >= DRM_RESERVED_CONTEXTS) {
		memset(&ctx, 0, sizeof(ctx));
		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
			ctx.handle = i;
			if (copy_to_user(&res.contexts[i], &i, sizeof(i)))
				return -EFAULT;
		}
	}
	res.count = DRM_RESERVED_CONTEXTS;
	if (copy_to_user((drm_ctx_res_t __user *) arg, &res, sizeof(res)))
		return -EFAULT;
	return 0;
}

int ffb_addctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	idx = ffb_alloc_queue(dev, (ctx.flags & _DRM_CONTEXT_2DONLY));
	if (idx < 0)
		return -ENFILE;

	DRM_DEBUG("%d\n", ctx.handle);
	ctx.handle = idx;
	if (copy_to_user((drm_ctx_t __user *) arg, &ctx, sizeof(ctx)))
		return -EFAULT;
	return 0;
}

int ffb_modctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	struct ffb_hw_context *hwctx;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;

	idx = ctx.handle;
	if (idx <= 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	hwctx = fpriv->hw_state[idx - 1];
	if (hwctx == NULL)
		return -EINVAL;

	if ((ctx.flags & _DRM_CONTEXT_2DONLY) == 0)
		hwctx->is_2d_only = 0;
	else
		hwctx->is_2d_only = 1;

	return 0;
}

int ffb_getctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	struct ffb_hw_context *hwctx;
	drm_ctx_t ctx;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;

	idx = ctx.handle;
	if (idx <= 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	hwctx = fpriv->hw_state[idx - 1];
	if (hwctx == NULL)
		return -EINVAL;

	if (hwctx->is_2d_only != 0)
		ctx.flags = _DRM_CONTEXT_2DONLY;
	else
		ctx.flags = 0;

	if (copy_to_user((drm_ctx_t __user *) arg, &ctx, sizeof(ctx)))
		return -EFAULT;

	return 0;
}

int ffb_switchctx(struct inode * inode, struct file * filp, unsigned int cmd,
		    unsigned long arg) {
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	drm_ctx_t ctx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);
	return ffb_context_switch(dev, dev->last_context, ctx.handle);
}

int ffb_newctx(struct inode * inode, struct file * filp, unsigned int cmd,
		 unsigned long arg) {
	drm_ctx_t ctx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);

	return 0;
}

int ffb_rmctx(struct inode * inode, struct file * filp, unsigned int cmd,
		unsigned long arg) {
	drm_ctx_t ctx;
	drm_file_t *priv = filp->private_data;
	struct drm_device *dev = priv->dev;
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int idx;

	if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
		return -EFAULT;
	DRM_DEBUG("%d\n", ctx.handle);

	idx = ctx.handle - 1;
	if (idx < 0 || idx >= FFB_MAX_CTXS)
		return -EINVAL;

	if (fpriv->hw_state[idx] != NULL) {
		kfree(fpriv->hw_state[idx]);
		fpriv->hw_state[idx] = NULL;
	}
	return 0;
}

static void ffb_driver_reclaim_buffers_locked(struct drm_device * dev)
{
	ffb_dev_priv_t *fpriv = (ffb_dev_priv_t *) dev->dev_private;
	int context = _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock);
	int idx;

	idx = context - 1;
	if (fpriv &&
	    context != DRM_KERNEL_CONTEXT && fpriv->hw_state[idx] != NULL) {
		kfree(fpriv->hw_state[idx]);
		fpriv->hw_state[idx] = NULL;
	}
}

static void ffb_driver_lastclose(struct drm_device * dev)
{
	if (dev->dev_private)
		kfree(dev->dev_private);
}

static void ffb_driver_unload(struct drm_device * dev)
{
	if (ffb_position != NULL)
		kfree(ffb_position);
}

static int ffb_driver_kernel_context_switch_unlock(struct drm_device *dev)
{
	dev->lock.filp = 0;
	{
		__volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
		unsigned int old, new, prev, ctx;

		ctx = lock.context;
		do {
			old = *plock;
			new = ctx;
			prev = cmpxchg(plock, old, new);
		} while (prev != old);
	}
	wake_up_interruptible(&dev->lock.lock_queue);
}

unsigned long ffb_driver_get_map_ofs(drm_map_t * map)
{
	return (map->offset & 0xffffffff);
}

unsigned long ffb_driver_get_reg_ofs(struct drm_device * dev)
{
	ffb_dev_priv_t *ffb_priv = (ffb_dev_priv_t *) dev->dev_private;

	if (ffb_priv)
		return ffb_priv->card_phys_base;

	return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-04 18:00:52 +0000