--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.1
+ *
+ * Copyright (C) 1999-2003 Brian Paul 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,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL 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:
+ * Keith Whitwell
+ * Daniel Borca
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "driver.h"
+#include "drm.h"
+#include "imports.h"
+
+#include "dri_util.h"
+
+#include "tdfx_context.h"
+#include "tdfx_dri.h"
+#include "xf86drm.h"
+
+
+#define TILE_WIDTH 128
+#define TILE_HEIGHT 32
+
+#define CMDFIFO_PAGES 64
+
+
+static int
+calcBufferStride (int xres, int tiled, int cpp)
+{
+ int strideInTiles;
+
+ if (tiled) {
+ /* Calculate tile width stuff */
+ strideInTiles = (xres+TILE_WIDTH-1)/TILE_WIDTH;
+
+ return strideInTiles*cpp*TILE_WIDTH;
+ } else {
+ return xres*cpp;
+ }
+} /* calcBufferStride */
+
+
+static int
+calcBufferHeightInTiles (int yres)
+{
+ int heightInTiles; /* Height of buffer in tiles */
+
+ /* Calculate tile height stuff */
+ heightInTiles = yres >> 5;
+
+ if (yres & (TILE_HEIGHT - 1))
+ heightInTiles++;
+
+ return heightInTiles;
+
+} /* calcBufferHeightInTiles */
+
+
+static int
+calcBufferSize (int xres, int yres, int tiled, int cpp)
+{
+ int stride, height, bufSize;
+
+ if (tiled) {
+ stride = calcBufferStride(xres, tiled, cpp);
+ height = TILE_HEIGHT * calcBufferHeightInTiles(yres);
+ } else {
+ stride = xres*cpp;
+ height = yres;
+ }
+
+ bufSize = stride * height;
+
+ return bufSize;
+} /* calcBufferSize */
+
+
+static void allocateMemory (const DRIDriverContext *ctx, TDFXDRIPtr pTDFX)
+{
+ int memRemaining, fifoSize, screenSizeInTiles;
+ int fbSize;
+ char *str;
+ int pixmapCacheLinesMin;
+ int cursorOffset, cursorSize;
+
+ pTDFX->stride = calcBufferStride(pTDFX->width, !0, pTDFX->cpp);
+
+ /* enough to do DVD */
+ pixmapCacheLinesMin = ((720*480*pTDFX->cpp) +
+ pTDFX->stride - 1)/pTDFX->stride;
+
+ if (pTDFX->deviceID > PCI_CHIP_VOODOO3) {
+ if ((pixmapCacheLinesMin + pTDFX->height) > 4095)
+ pixmapCacheLinesMin = 4095 - pTDFX->height;
+ } else {
+ if ((pixmapCacheLinesMin + pTDFX->height) > 2047)
+ pixmapCacheLinesMin = 2047 - pTDFX->height;
+ }
+
+ if (pTDFX->cpp!=3) {
+ screenSizeInTiles=calcBufferSize(pTDFX->width, pTDFX->height,
+ !0, pTDFX->cpp);
+ }
+ else {
+ /* cpp==3 needs to bump up to 4 */
+ screenSizeInTiles=calcBufferSize(pTDFX->width, pTDFX->height,
+ !0, 4);
+ }
+
+ /*
+ * Layout is:
+ * cursor, fifo, fb, tex, bb, db
+ */
+
+ fbSize = (pTDFX->height + pixmapCacheLinesMin) * pTDFX->stride;
+
+ memRemaining=(pTDFX->mem - 1) &~ 0xFFF;
+ /* Note that a page is 4096 bytes, and a */
+ /* tile is 32 x 128 = 4096 bytes. So, */
+ /* page and tile boundaries are the same */
+ /* Place the depth offset first, forcing */
+ /* it to be on an *odd* page boundary. */
+ pTDFX->depthOffset = (memRemaining - screenSizeInTiles) &~ 0xFFF;
+ if ((pTDFX->depthOffset & (0x1 << 12)) == 0) {
+ pTDFX->depthOffset -= (0x1 << 12);
+ }
+ /* Now, place the back buffer, forcing it */
+ /* to be on an *even* page boundary. */
+ pTDFX->backOffset = (pTDFX->depthOffset - screenSizeInTiles) &~ 0xFFF;
+ if (pTDFX->backOffset & (0x1 << 12)) {
+ pTDFX->backOffset -= (0x1 << 12);
+ }
+ /* Give the cmd fifo at least */
+ /* CMDFIFO_PAGES pages, but no more than */
+ /* 64. NOTE: Don't go higher than 64, as */
+ /* there is suspect code in Glide3 ! */
+ fifoSize = ((64 <= CMDFIFO_PAGES) ? 64 : CMDFIFO_PAGES) << 12;
+
+ /* We give 4096 bytes to the cursor */
+ cursorSize = 0/*4096*/;
+ cursorOffset = 0;
+
+ pTDFX->fifoOffset = cursorOffset + cursorSize;
+ pTDFX->fifoSize = fifoSize;
+ /* Now, place the front buffer, forcing */
+ /* it to be on a page boundary too, just */
+ /* for giggles. */
+ pTDFX->fbOffset = pTDFX->fifoOffset + pTDFX->fifoSize;
+ pTDFX->textureOffset = pTDFX->fbOffset + fbSize;
+ if (pTDFX->depthOffset <= pTDFX->textureOffset ||
+ pTDFX->backOffset <= pTDFX->textureOffset) {
+ /*
+ * pTDFX->textureSize < 0 means that the DRI is disabled. pTDFX->backOffset
+ * is used to calculate the maximum amount of memory available for
+ * 2D offscreen use. With DRI disabled, set this to the top of memory.
+ */
+
+ pTDFX->textureSize = -1;
+ pTDFX->backOffset = pTDFX->mem;
+ pTDFX->depthOffset = -1;
+ fprintf(stderr,
+ "Not enough video memory available for textures and depth buffer\n"
+ "\tand/or back buffer. Disabling DRI. To use DRI try lower\n"
+ "\tresolution modes and/or a smaller virtual screen size\n");
+ } else {
+ pTDFX->textureSize = pTDFX->backOffset - pTDFX->textureOffset;
+ }
+}
+
+
+static int createScreen (DRIDriverContext *ctx, TDFXDRIPtr pTDFX)
+{
+ int err;
+
+ {
+ int width_bytes = (ctx->shared.virtualWidth * ctx->cpp);
+ int maxy = ctx->shared.fbSize / width_bytes;
+
+
+ if (maxy <= ctx->shared.virtualHeight * 3) {
+ fprintf(stderr,
+ "Static buffer allocation failed -- "
+ "need at least %d kB video memory (have %d kB)\n",
+ (ctx->shared.virtualWidth * ctx->shared.virtualHeight *
+ ctx->cpp * 3 + 1023) / 1024,
+ ctx->shared.fbSize / 1024);
+ return 0;
+ }
+ }
+
+ ctx->shared.SAREASize = SAREA_MAX;
+ pTDFX->regsSize = ctx->MMIOSize;
+
+ /* Note that drmOpen will try to load the kernel module, if needed. */
+ ctx->drmFD = drmOpen("tdfx", NULL );
+ if (ctx->drmFD < 0) {
+ fprintf(stderr, "[drm] drmOpen failed\n");
+ return 0;
+ }
+
+ if ((err = drmSetBusid(ctx->drmFD, ctx->pciBusID)) < 0) {
+ fprintf(stderr, "[drm] drmSetBusid failed (%d, %s), %s\n",
+ ctx->drmFD, ctx->pciBusID, strerror(-err));
+ return 0;
+ }
+
+ if (drmAddMap( ctx->drmFD,
+ 0,
+ ctx->shared.SAREASize,
+ DRM_SHM,
+ DRM_CONTAINS_LOCK,
+ &ctx->shared.hSAREA) < 0)
+ {
+ fprintf(stderr, "[drm] drmAddMap failed\n");
+ return 0;
+ }
+ fprintf(stderr, "[drm] added %d byte SAREA at 0x%08lx\n",
+ ctx->shared.SAREASize, ctx->shared.hSAREA);
+
+ if (drmMap( ctx->drmFD,
+ ctx->shared.hSAREA,
+ ctx->shared.SAREASize,
+ (drmAddressPtr)(&ctx->pSAREA)) < 0)
+ {
+ fprintf(stderr, "[drm] drmMap failed\n");
+ return 0;
+ }
+ memset(ctx->pSAREA, 0, ctx->shared.SAREASize);
+ fprintf(stderr, "[drm] mapped SAREA 0x%08lx to %p, size %d\n",
+ ctx->shared.hSAREA, ctx->pSAREA, ctx->shared.SAREASize);
+
+ /* Need to AddMap the framebuffer and mmio regions here:
+ */
+ if (drmAddMap( ctx->drmFD,
+ (drmHandle)ctx->FBStart,
+ ctx->FBSize,
+ DRM_FRAME_BUFFER,
+#ifndef _EMBEDDED
+ 0,
+#else
+ DRM_READ_ONLY,
+#endif
+ &ctx->shared.hFrameBuffer) < 0)
+ {
+ fprintf(stderr, "[drm] drmAddMap framebuffer failed\n");
+ return 0;
+ }
+
+ fprintf(stderr, "[drm] framebuffer handle = 0x%08lx\n",
+ ctx->shared.hFrameBuffer);
+
+
+ if (drmAddMap(ctx->drmFD,
+ ctx->MMIOStart,
+ ctx->MMIOSize,
+ DRM_REGISTERS,
+ DRM_READ_ONLY,
+ &pTDFX->regs) < 0) {
+ fprintf(stderr, "[drm] drmAddMap mmio failed\n");
+ return 0;
+ }
+ fprintf(stderr,
+ "[drm] register handle = 0x%08lx\n", pTDFX->regs);
+
+
+ /* Create a 'server' context so we can grab the lock for
+ * initialization ioctls.
+ */
+ if ((err = drmCreateContext(ctx->drmFD, &ctx->serverContext)) != 0) {
+ fprintf(stderr, "%s: drmCreateContext failed %d\n", __FUNCTION__, err);
+ return 0;
+ }
+
+ DRM_LOCK(ctx->drmFD, ctx->pSAREA, ctx->serverContext, 0);
+
+ /* Initialize the kernel data structures */
+
+ /* Initialize kernel gart memory manager */
+ allocateMemory(ctx, pTDFX);
+
+ /* Initialize the SAREA private data structure */
+
+
+ /* Quick hack to clear the front & back buffers. Could also use
+ * the clear ioctl to do this, but would need to setup hw state
+ * first.
+ */
+
+
+ /* This is the struct passed to tdfx_dri.so for its initialization */
+ ctx->driverClientMsg = malloc(sizeof(TDFXDRIRec));
+ ctx->driverClientMsgSize = sizeof(TDFXDRIRec);
+ memcpy(ctx->driverClientMsg, pTDFX, ctx->driverClientMsgSize);
+ pTDFX = (TDFXDRIPtr)ctx->driverClientMsg;
+
+ /* Don't release the lock now - let the VT switch handler do it. */
+
+ return 1;
+}
+
+
+/**
+ * \brief Establish the set of modes available for the display.
+ *
+ * \param ctx display handle.
+ * \param numModes will receive the number of supported modes.
+ * \param modes will point to the list of supported modes.
+ *
+ * \return one on success, or zero on failure.
+ *
+ * Allocates a single visual and fills it with information according to the
+ * display bit depth. Supports only 16 and 32 bpp bit depths, aborting
+ * otherwise.
+ */
+const __GLcontextModes __glModes[] = {
+
+ /* 32 bit, RGBA Depth=24 Stencil=8 */
+ {.rgbMode = GL_TRUE, .colorIndexMode = GL_FALSE, .doubleBufferMode = GL_TRUE, .stereoMode = GL_FALSE,
+ .haveAccumBuffer = GL_FALSE, .haveDepthBuffer = GL_TRUE, .haveStencilBuffer = GL_TRUE,
+ .redBits = 8, .greenBits = 8, .blueBits = 8, .alphaBits = 8,
+ .redMask = 0xff0000, .greenMask = 0xff00, .blueMask = 0xff, .alphaMask = 0xff000000,
+ .rgbBits = 32, .indexBits = 0,
+ .accumRedBits = 0, .accumGreenBits = 0, .accumBlueBits = 0, .accumAlphaBits = 0,
+ .depthBits = 24, .stencilBits = 8,
+ .numAuxBuffers= 0, .level = 0, .pixmapMode = GL_FALSE, },
+
+ /* 16 bit, RGB Depth=16 */
+ {.rgbMode = GL_TRUE, .colorIndexMode = GL_FALSE, .doubleBufferMode = GL_TRUE, .stereoMode = GL_FALSE,
+ .haveAccumBuffer = GL_FALSE, .haveDepthBuffer = GL_TRUE, .haveStencilBuffer = GL_FALSE,
+ .redBits = 5, .greenBits = 6, .blueBits = 5, .alphaBits = 0,
+ .redMask = 0xf800, .greenMask = 0x07e0, .blueMask = 0x001f, .alphaMask = 0x0,
+ .rgbBits = 16, .indexBits = 0,
+ .accumRedBits = 0, .accumGreenBits = 0, .accumBlueBits = 0, .accumAlphaBits = 0,
+ .depthBits = 16, .stencilBits = 0,
+ .numAuxBuffers= 0, .level = 0, .pixmapMode = GL_FALSE, },
+};
+static int tdfxInitContextModes( const DRIDriverContext *ctx,
+ int *numModes, const __GLcontextModes **modes)
+{
+ int n = sizeof(__glModes)/sizeof(__glModes[0]);
+ const __GLcontextModes *m = &__glModes[0];
+
+ if (ctx->chipset < PCI_CHIP_VOODOO4) {
+ n /= 2;
+ m += n;
+ }
+
+ *numModes = n;
+ *modes = m;
+
+ return 1;
+}
+
+
+/**
+ * \brief Validate the fbdev mode.
+ *
+ * \param ctx display handle.
+ *
+ * \return one on success, or zero on failure.
+ *
+ * Saves some registers and returns 1.
+ *
+ * \sa tdfxValidateMode().
+ */
+static int tdfxValidateMode( const DRIDriverContext *ctx )
+{
+ return 1;
+}
+
+
+/**
+ * \brief Examine mode returned by fbdev.
+ *
+ * \param ctx display handle.
+ *
+ * \return one on success, or zero on failure.
+ *
+ * Restores registers that fbdev has clobbered and returns 1.
+ *
+ * \sa tdfxValidateMode().
+ */
+static int tdfxPostValidateMode( const DRIDriverContext *ctx )
+{
+ return 1;
+}
+
+
+/**
+ * \brief Initialize the framebuffer device mode
+ *
+ * \param ctx display handle.
+ *
+ * \return one on success, or zero on failure.
+ *
+ * Before exiting clears the framebuffer memory accessing it directly.
+ */
+static int tdfxInitFBDev( DRIDriverContext *ctx )
+{
+ TDFXDRIPtr pTDFX = calloc(1, sizeof(TDFXDRIRec));
+
+ {
+ int dummy = ctx->shared.virtualWidth;
+
+ switch (ctx->bpp / 8) {
+ case 1: dummy = (ctx->shared.virtualWidth + 127) & ~127; break;
+ case 2: dummy = (ctx->shared.virtualWidth + 31) & ~31; break;
+ case 3:
+ case 4: dummy = (ctx->shared.virtualWidth + 15) & ~15; break;
+ }
+
+ ctx->shared.virtualWidth = dummy;
+ }
+
+ ctx->driverPrivate = (void *)pTDFX;
+
+ pTDFX->deviceID = ctx->chipset;
+ pTDFX->width = ctx->shared.virtualWidth;
+ pTDFX->height = ctx->shared.virtualHeight;
+ pTDFX->cpp = ctx->cpp;
+ pTDFX->mem = ctx->FBSize; /* ->shared.fbSize? mem probe? */
+ pTDFX->sarea_priv_offset = sizeof(drm_sarea_t);
+
+ if (!createScreen(ctx, pTDFX))
+ return 0;
+
+ return 1;
+}
+
+
+/**
+ * \brief The screen is being closed, so clean up any state and free any
+ * resources used by the DRI.
+ *
+ * \param ctx display handle.
+ *
+ * Unmaps the SAREA, closes the DRM device file descriptor and frees the driver
+ * private data.
+ */
+static void tdfxHaltFBDev( DRIDriverContext *ctx )
+{
+ drmUnmap( ctx->pSAREA, ctx->shared.SAREASize );
+ drmClose(ctx->drmFD);
+
+ if (ctx->driverPrivate) {
+ free(ctx->driverPrivate);
+ ctx->driverPrivate = 0;
+ }
+}
+
+
+/**
+ * \brief Shutdown the drawing engine.
+ *
+ * \param ctx display handle
+ *
+ * Turns off the 3D engine & restores the graphics card
+ * to a state that fbdev understands.
+ */
+static int tdfxEngineShutdown( const DRIDriverContext *ctx )
+{
+ fprintf(stderr, "%s: not implemented\n", __FUNCTION__);
+ return 1;
+}
+
+
+/**
+ * \brief Restore the drawing engine.
+ *
+ * \param ctx display handle
+ *
+ * Resets the graphics card and sets initial values for several registers of
+ * the card's drawing engine.
+ *
+ * Turns on 3dfx
+ */
+static int tdfxEngineRestore( const DRIDriverContext *ctx )
+{
+ fprintf(stderr, "%s: not implemented\n", __FUNCTION__);
+ return 1;
+}
+
+
+/**
+ * \brief Exported driver interface for Mini GLX.
+ *
+ * \sa DRIDriverRec.
+ */
+struct DRIDriverRec __driDriver = {
+ tdfxInitContextModes,
+ tdfxValidateMode,
+ tdfxPostValidateMode,
+ tdfxInitFBDev,
+ tdfxHaltFBDev,
+ tdfxEngineShutdown,
+ tdfxEngineRestore,
+ 0
+};
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