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-rw-r--r--shared-core/mach64_state.c897
1 files changed, 897 insertions, 0 deletions
diff --git a/shared-core/mach64_state.c b/shared-core/mach64_state.c
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--- /dev/null
+++ b/shared-core/mach64_state.c
@@ -0,0 +1,897 @@
+/* mach64_state.c -- State support for mach64 (Rage Pro) driver -*- linux-c -*-
+ * Created: Sun Dec 03 19:20:26 2000 by gareth@valinux.com
+ *
+ * Copyright 2000 Gareth Hughes
+ * Copyright 2002-2003 Leif Delgass
+ * 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT OWNER(S) 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:
+ * Gareth Hughes <gareth@valinux.com>
+ * Leif Delgass <ldelgass@retinalburn.net>
+ * José Fonseca <j_r_fonseca@yahoo.co.uk>
+ */
+
+#define __NO_VERSION__
+#include "mach64.h"
+#include "drmP.h"
+#include "drm.h"
+#include "mach64_drm.h"
+#include "mach64_drv.h"
+
+
+/* ================================================================
+ * DMA hardware state programming functions
+ */
+
+static void mach64_print_dirty( const char *msg, unsigned int flags )
+{
+ DRM_DEBUG( "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s\n",
+ msg,
+ flags,
+ (flags & MACH64_UPLOAD_DST_OFF_PITCH) ? "dst_off_pitch, " : "",
+ (flags & MACH64_UPLOAD_Z_ALPHA_CNTL) ? "z_alpha_cntl, " : "",
+ (flags & MACH64_UPLOAD_SCALE_3D_CNTL) ? "scale_3d_cntl, " : "",
+ (flags & MACH64_UPLOAD_DP_FOG_CLR) ? "dp_fog_clr, " : "",
+ (flags & MACH64_UPLOAD_DP_WRITE_MASK) ? "dp_write_mask, " : "",
+ (flags & MACH64_UPLOAD_DP_PIX_WIDTH) ? "dp_pix_width, " : "",
+ (flags & MACH64_UPLOAD_SETUP_CNTL) ? "setup_cntl, " : "",
+ (flags & MACH64_UPLOAD_MISC) ? "misc, " : "",
+ (flags & MACH64_UPLOAD_TEXTURE) ? "texture, " : "",
+ (flags & MACH64_UPLOAD_TEX0IMAGE) ? "tex0 image, " : "",
+ (flags & MACH64_UPLOAD_TEX1IMAGE) ? "tex1 image, " : "",
+ (flags & MACH64_UPLOAD_CLIPRECTS) ? "cliprects, " : "" );
+}
+
+/* Mach64 doesn't have hardware cliprects, just one hardware scissor,
+ * so the GL scissor is intersected with each cliprect here
+ */
+/* This function returns 0 on success, 1 for no intersection, and
+ * negative for an error
+ */
+static int mach64_emit_cliprect( DRMFILE filp, drm_mach64_private_t *dev_priv,
+ drm_clip_rect_t *box )
+{
+ u32 sc_left_right, sc_top_bottom;
+ drm_clip_rect_t scissor;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_context_regs_t *regs = &sarea_priv->context_state;
+ DMALOCALS;
+
+ DRM_DEBUG( "%s: box=%p\n", __FUNCTION__, box );
+
+ /* Get GL scissor */
+ /* FIXME: store scissor in SAREA as a cliprect instead of in
+ * hardware format, or do intersection client-side
+ */
+ scissor.x1 = regs->sc_left_right & 0xffff;
+ scissor.x2 = (regs->sc_left_right & 0xffff0000) >> 16;
+ scissor.y1 = regs->sc_top_bottom & 0xffff;
+ scissor.y2 = (regs->sc_top_bottom & 0xffff0000) >> 16;
+
+ /* Intersect GL scissor with cliprect */
+ if ( box->x1 > scissor.x1 ) scissor.x1 = box->x1;
+ if ( box->y1 > scissor.y1 ) scissor.y1 = box->y1;
+ if ( box->x2 < scissor.x2 ) scissor.x2 = box->x2;
+ if ( box->y2 < scissor.y2 ) scissor.y2 = box->y2;
+ /* positive return means skip */
+ if ( scissor.x1 >= scissor.x2 ) return 1;
+ if ( scissor.y1 >= scissor.y2 ) return 1;
+
+ DMAGETPTR( filp, dev_priv, 2 ); /* returns on failure to get buffer */
+
+ sc_left_right = ( (scissor.x1 << 0) | (scissor.x2 << 16) );
+ sc_top_bottom = ( (scissor.y1 << 0) | (scissor.y2 << 16) );
+
+ DMAOUTREG( MACH64_SC_LEFT_RIGHT, sc_left_right );
+ DMAOUTREG( MACH64_SC_TOP_BOTTOM, sc_top_bottom );
+
+ DMAADVANCE( dev_priv, 1 );
+
+ return 0;
+}
+
+static __inline__ int mach64_emit_state( DRMFILE filp, drm_mach64_private_t *dev_priv )
+{
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_context_regs_t *regs = &sarea_priv->context_state;
+ unsigned int dirty = sarea_priv->dirty;
+ u32 offset = ((regs->tex_size_pitch & 0xf0) >> 2);
+ DMALOCALS;
+
+ if ( MACH64_VERBOSE ) {
+ mach64_print_dirty( __FUNCTION__, dirty );
+ } else {
+ DRM_DEBUG( "%s: dirty=0x%08x\n", __FUNCTION__, dirty );
+ }
+
+ DMAGETPTR( filp, dev_priv, 17 ); /* returns on failure to get buffer */
+
+ if ( dirty & MACH64_UPLOAD_MISC ) {
+ DMAOUTREG( MACH64_DP_MIX, regs->dp_mix );
+ DMAOUTREG( MACH64_DP_SRC, regs->dp_src );
+ DMAOUTREG( MACH64_CLR_CMP_CNTL, regs->clr_cmp_cntl );
+ DMAOUTREG( MACH64_GUI_TRAJ_CNTL, regs->gui_traj_cntl );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_MISC;
+ }
+
+ if ( dirty & MACH64_UPLOAD_DST_OFF_PITCH ) {
+ DMAOUTREG( MACH64_DST_OFF_PITCH, regs->dst_off_pitch );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_DST_OFF_PITCH;
+ }
+ if ( dirty & MACH64_UPLOAD_Z_OFF_PITCH ) {
+ DMAOUTREG( MACH64_Z_OFF_PITCH, regs->z_off_pitch );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_Z_OFF_PITCH;
+ }
+ if ( dirty & MACH64_UPLOAD_Z_ALPHA_CNTL ) {
+ DMAOUTREG( MACH64_Z_CNTL, regs->z_cntl );
+ DMAOUTREG( MACH64_ALPHA_TST_CNTL, regs->alpha_tst_cntl );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_Z_ALPHA_CNTL;
+ }
+ if ( dirty & MACH64_UPLOAD_SCALE_3D_CNTL ) {
+ DMAOUTREG( MACH64_SCALE_3D_CNTL, regs->scale_3d_cntl );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_SCALE_3D_CNTL;
+ }
+ if ( dirty & MACH64_UPLOAD_DP_FOG_CLR ) {
+ DMAOUTREG( MACH64_DP_FOG_CLR, regs->dp_fog_clr );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_DP_FOG_CLR;
+ }
+ if ( dirty & MACH64_UPLOAD_DP_WRITE_MASK ) {
+ DMAOUTREG( MACH64_DP_WRITE_MASK, regs->dp_write_mask );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_DP_WRITE_MASK;
+ }
+ if ( dirty & MACH64_UPLOAD_DP_PIX_WIDTH ) {
+ DMAOUTREG( MACH64_DP_PIX_WIDTH, regs->dp_pix_width );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_DP_PIX_WIDTH;
+ }
+ if ( dirty & MACH64_UPLOAD_SETUP_CNTL ) {
+ DMAOUTREG( MACH64_SETUP_CNTL, regs->setup_cntl );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_SETUP_CNTL;
+ }
+
+ if ( dirty & MACH64_UPLOAD_TEXTURE ) {
+ DMAOUTREG( MACH64_TEX_SIZE_PITCH, regs->tex_size_pitch );
+ DMAOUTREG( MACH64_TEX_CNTL, regs->tex_cntl );
+ DMAOUTREG( MACH64_SECONDARY_TEX_OFF, regs->secondary_tex_off );
+ DMAOUTREG( MACH64_TEX_0_OFF + offset, regs->tex_offset );
+ sarea_priv->dirty &= ~MACH64_UPLOAD_TEXTURE;
+ }
+
+ DMAADVANCE( dev_priv, 1 );
+
+ sarea_priv->dirty &= MACH64_UPLOAD_CLIPRECTS;
+
+ return 0;
+
+}
+
+
+/* ================================================================
+ * DMA command dispatch functions
+ */
+
+static int mach64_dma_dispatch_clear( DRMFILE filp, drm_device_t *dev,
+ unsigned int flags,
+ int cx, int cy, int cw, int ch,
+ unsigned int clear_color,
+ unsigned int clear_depth )
+{
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_context_regs_t *ctx = &sarea_priv->context_state;
+ int nbox = sarea_priv->nbox;
+ drm_clip_rect_t *pbox = sarea_priv->boxes;
+ u32 fb_bpp, depth_bpp;
+ int i;
+ DMALOCALS;
+
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ switch ( dev_priv->fb_bpp ) {
+ case 16:
+ fb_bpp = MACH64_DATATYPE_RGB565;
+ break;
+ case 32:
+ fb_bpp = MACH64_DATATYPE_ARGB8888;
+ break;
+ default:
+ return DRM_ERR(EINVAL);
+ }
+ switch ( dev_priv->depth_bpp ) {
+ case 16:
+ depth_bpp = MACH64_DATATYPE_RGB565;
+ break;
+ case 24:
+ case 32:
+ depth_bpp = MACH64_DATATYPE_ARGB8888;
+ break;
+ default:
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( !nbox )
+ return 0;
+
+ DMAGETPTR( filp, dev_priv, nbox * 31 ); /* returns on failure to get buffer */
+
+ for ( i = 0 ; i < nbox ; i++ ) {
+ int x = pbox[i].x1;
+ int y = pbox[i].y1;
+ int w = pbox[i].x2 - x;
+ int h = pbox[i].y2 - y;
+
+ DRM_DEBUG( "dispatch clear %d,%d-%d,%d flags 0x%x\n",
+ pbox[i].x1, pbox[i].y1,
+ pbox[i].x2, pbox[i].y2, flags );
+
+ if ( flags & (MACH64_FRONT | MACH64_BACK) ) {
+ /* Setup for color buffer clears
+ */
+
+ DMAOUTREG( MACH64_Z_CNTL, 0 );
+ DMAOUTREG( MACH64_SCALE_3D_CNTL, 0 );
+
+ DMAOUTREG( MACH64_SC_LEFT_RIGHT, ctx->sc_left_right );
+ DMAOUTREG( MACH64_SC_TOP_BOTTOM, ctx->sc_top_bottom );
+
+ DMAOUTREG( MACH64_CLR_CMP_CNTL, 0 );
+ DMAOUTREG( MACH64_GUI_TRAJ_CNTL,
+ (MACH64_DST_X_LEFT_TO_RIGHT |
+ MACH64_DST_Y_TOP_TO_BOTTOM) );
+
+ DMAOUTREG( MACH64_DP_PIX_WIDTH, ((fb_bpp << 0) |
+ (fb_bpp << 4) |
+ (fb_bpp << 8) |
+ (fb_bpp << 16) |
+ (fb_bpp << 28)) );
+
+ DMAOUTREG( MACH64_DP_FRGD_CLR, clear_color );
+ DMAOUTREG( MACH64_DP_WRITE_MASK, ctx->dp_write_mask );
+ DMAOUTREG( MACH64_DP_MIX, (MACH64_BKGD_MIX_D |
+ MACH64_FRGD_MIX_S) );
+ DMAOUTREG( MACH64_DP_SRC, (MACH64_BKGD_SRC_FRGD_CLR |
+ MACH64_FRGD_SRC_FRGD_CLR |
+ MACH64_MONO_SRC_ONE) );
+
+
+ }
+
+ if ( flags & MACH64_FRONT ) {
+
+ DMAOUTREG( MACH64_DST_OFF_PITCH,
+ dev_priv->front_offset_pitch );
+ DMAOUTREG( MACH64_DST_X_Y,
+ (y << 16) | x );
+ DMAOUTREG( MACH64_DST_WIDTH_HEIGHT,
+ (h << 16) | w );
+
+ }
+
+ if ( flags & MACH64_BACK ) {
+
+ DMAOUTREG( MACH64_DST_OFF_PITCH,
+ dev_priv->back_offset_pitch );
+ DMAOUTREG( MACH64_DST_X_Y,
+ (y << 16) | x );
+ DMAOUTREG( MACH64_DST_WIDTH_HEIGHT,
+ (h << 16) | w );
+
+ }
+
+ if ( flags & MACH64_DEPTH ) {
+ /* Setup for depth buffer clear
+ */
+ DMAOUTREG( MACH64_Z_CNTL, 0 );
+ DMAOUTREG( MACH64_SCALE_3D_CNTL, 0 );
+
+ DMAOUTREG( MACH64_SC_LEFT_RIGHT, ctx->sc_left_right );
+ DMAOUTREG( MACH64_SC_TOP_BOTTOM, ctx->sc_top_bottom );
+
+ DMAOUTREG( MACH64_CLR_CMP_CNTL, 0 );
+ DMAOUTREG( MACH64_GUI_TRAJ_CNTL,
+ (MACH64_DST_X_LEFT_TO_RIGHT |
+ MACH64_DST_Y_TOP_TO_BOTTOM) );
+
+ DMAOUTREG( MACH64_DP_PIX_WIDTH, ((depth_bpp << 0) |
+ (depth_bpp << 4) |
+ (depth_bpp << 8) |
+ (depth_bpp << 16) |
+ (depth_bpp << 28)) );
+
+ DMAOUTREG( MACH64_DP_FRGD_CLR, clear_depth );
+ DMAOUTREG( MACH64_DP_WRITE_MASK, 0xffffffff );
+ DMAOUTREG( MACH64_DP_MIX, (MACH64_BKGD_MIX_D |
+ MACH64_FRGD_MIX_S) );
+ DMAOUTREG( MACH64_DP_SRC, (MACH64_BKGD_SRC_FRGD_CLR |
+ MACH64_FRGD_SRC_FRGD_CLR |
+ MACH64_MONO_SRC_ONE) );
+
+ DMAOUTREG( MACH64_DST_OFF_PITCH,
+ dev_priv->depth_offset_pitch );
+ DMAOUTREG( MACH64_DST_X_Y,
+ (y << 16) | x );
+ DMAOUTREG( MACH64_DST_WIDTH_HEIGHT,
+ (h << 16) | w );
+ }
+ }
+
+ DMAADVANCE( dev_priv, 1 );
+
+ return 0;
+}
+
+static int mach64_dma_dispatch_swap( DRMFILE filp, drm_device_t *dev )
+{
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ int nbox = sarea_priv->nbox;
+ drm_clip_rect_t *pbox = sarea_priv->boxes;
+ u32 fb_bpp;
+ int i;
+ DMALOCALS;
+
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ switch ( dev_priv->fb_bpp ) {
+ case 16:
+ fb_bpp = MACH64_DATATYPE_RGB565;
+ break;
+ case 32:
+ default:
+ fb_bpp = MACH64_DATATYPE_ARGB8888;
+ break;
+ }
+
+ if ( !nbox )
+ return 0;
+
+ DMAGETPTR( filp, dev_priv, 13 + nbox * 4 ); /* returns on failure to get buffer */
+
+ DMAOUTREG( MACH64_Z_CNTL, 0 );
+ DMAOUTREG( MACH64_SCALE_3D_CNTL, 0 );
+
+ DMAOUTREG( MACH64_SC_LEFT_RIGHT, 0 | ( 8191 << 16 ) ); /* no scissor */
+ DMAOUTREG( MACH64_SC_TOP_BOTTOM, 0 | ( 16383 << 16 ) );
+
+ DMAOUTREG( MACH64_CLR_CMP_CNTL, 0 );
+ DMAOUTREG( MACH64_GUI_TRAJ_CNTL, (MACH64_DST_X_LEFT_TO_RIGHT |
+ MACH64_DST_Y_TOP_TO_BOTTOM) );
+
+ DMAOUTREG( MACH64_DP_PIX_WIDTH, ((fb_bpp << 0) |
+ (fb_bpp << 4) |
+ (fb_bpp << 8) |
+ (fb_bpp << 16) |
+ (fb_bpp << 28)) );
+
+ DMAOUTREG( MACH64_DP_WRITE_MASK, 0xffffffff );
+ DMAOUTREG( MACH64_DP_MIX, (MACH64_BKGD_MIX_D |
+ MACH64_FRGD_MIX_S) );
+ DMAOUTREG( MACH64_DP_SRC, (MACH64_BKGD_SRC_BKGD_CLR |
+ MACH64_FRGD_SRC_BLIT |
+ MACH64_MONO_SRC_ONE) );
+
+ DMAOUTREG( MACH64_SRC_OFF_PITCH, dev_priv->back_offset_pitch );
+ DMAOUTREG( MACH64_DST_OFF_PITCH, dev_priv->front_offset_pitch );
+
+ for ( i = 0 ; i < nbox ; i++ ) {
+ int x = pbox[i].x1;
+ int y = pbox[i].y1;
+ int w = pbox[i].x2 - x;
+ int h = pbox[i].y2 - y;
+
+ DRM_DEBUG( "dispatch swap %d,%d-%d,%d\n",
+ pbox[i].x1, pbox[i].y1,
+ pbox[i].x2, pbox[i].y2 );
+
+ DMAOUTREG( MACH64_SRC_WIDTH1, w );
+ DMAOUTREG( MACH64_SRC_Y_X, (x << 16) | y );
+ DMAOUTREG( MACH64_DST_Y_X, (x << 16) | y );
+ DMAOUTREG( MACH64_DST_WIDTH_HEIGHT, (h << 16) | w );
+
+ }
+
+ DMAADVANCE( dev_priv, 1 );
+
+ if (dev_priv->driver_mode == MACH64_MODE_DMA_ASYNC) {
+ for (i = 0; i < MACH64_MAX_QUEUED_FRAMES - 1; i++) {
+ dev_priv->frame_ofs[i] = dev_priv->frame_ofs[i+1];
+ }
+ dev_priv->frame_ofs[i] = GETRINGOFFSET();
+
+ dev_priv->sarea_priv->frames_queued++;
+ }
+
+ return 0;
+}
+
+static int mach64_do_get_frames_queued( drm_mach64_private_t *dev_priv )
+{
+ drm_mach64_descriptor_ring_t *ring = &dev_priv->ring;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ int i, start;
+ u32 head, tail, ofs;
+
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ if (sarea_priv->frames_queued == 0)
+ return 0;
+
+ tail = ring->tail;
+ mach64_ring_tick( dev_priv, ring );
+ head = ring->head;
+
+ start = ( MACH64_MAX_QUEUED_FRAMES -
+ DRM_MIN(MACH64_MAX_QUEUED_FRAMES, sarea_priv->frames_queued) );
+
+ if ( head == tail ) {
+ sarea_priv->frames_queued = 0;
+ for (i = start; i < MACH64_MAX_QUEUED_FRAMES; i++) {
+ dev_priv->frame_ofs[i] = ~0;
+ }
+ return 0;
+ }
+
+ for ( i = start; i < MACH64_MAX_QUEUED_FRAMES; i++ ) {
+ ofs = dev_priv->frame_ofs[i];
+ DRM_DEBUG( "frame_ofs[%d] ofs: %d\n", i, ofs );
+ if ( ofs == ~0 ||
+ ( head < tail && (ofs < head || ofs >= tail) ) ||
+ ( head > tail && (ofs < head && ofs >= tail) ) ) {
+ sarea_priv->frames_queued = (MACH64_MAX_QUEUED_FRAMES - 1) - i;
+ dev_priv->frame_ofs[i] = ~0;
+ }
+ }
+
+ return sarea_priv->frames_queued;
+}
+
+/* Copy and verify a client submited buffer.
+ * FIXME: Make an assembly optimized version
+ */
+static __inline__ int copy_and_verify_from_user( u32 *to, const u32 *from, unsigned long bytes )
+{
+ unsigned long n = bytes; /* dwords remaining in buffer */
+
+ if ( DRM_VERIFYAREA_READ( from, n ) ) {
+ DRM_ERROR( "%s: verify_area\n", __FUNCTION__ );
+ return DRM_ERR(EFAULT);
+ }
+
+ n >>= 2;
+
+ while ( n > 1 ) {
+ u32 data, reg, count;
+
+ if ( DRM_GET_USER_UNCHECKED( data, from++ ) ) {
+ DRM_ERROR( "%s: get_user\n", __FUNCTION__ );
+ return DRM_ERR(EFAULT);
+ }
+
+ n--;
+
+ reg = le32_to_cpu(data);
+ count = (reg >> 16) + 1;
+ if( count <= n ) {
+ n -= count;
+ reg &= 0xffff;
+
+ /* This is an exact match of Mach64's Setup Engine registers,
+ * excluding SETUP_CNTL (1_C1).
+ */
+ if( (reg >= 0x0190 && reg < 0x01c1) ||
+ (reg >= 0x01ca && reg <= 0x01cf) ) {
+ *to++ = data;
+ if ( DRM_COPY_FROM_USER_UNCHECKED( to, from, count << 2 ) ) {
+ DRM_ERROR( "%s: copy_from_user\n", __FUNCTION__ );
+ return DRM_ERR(EFAULT);
+ }
+ to += count;
+ } else {
+ DRM_ERROR( "%s: Got bad command: 0x%04x\n", __FUNCTION__, reg );
+ return DRM_ERR(EACCES);
+ }
+
+ from += count;
+ } else {
+ DRM_ERROR( "%s: Got bad command count(=%u) dwords remaining=%lu\n",
+ __FUNCTION__, count, n );
+ return DRM_ERR(EINVAL);
+ }
+ }
+
+ if (n == 0)
+ return 0;
+ else {
+ DRM_ERROR( "%s: Bad buf->used(=%lu)\n", __FUNCTION__, bytes );
+ return DRM_ERR(EINVAL);
+ }
+}
+
+static int mach64_dma_dispatch_vertex( DRMFILE filp, drm_device_t *dev, int prim, void *buf,
+ unsigned long used, int discard )
+{
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_buf_t *copy_buf;
+ int done = 0;
+ int verify_ret = 0;
+ DMALOCALS;
+
+ DRM_DEBUG( "%s: buf=%p used=%lu nbox=%d\n",
+ __FUNCTION__, buf, used, sarea_priv->nbox );
+
+ if ( used ) {
+ int ret = 0;
+ int i = 0;
+
+ copy_buf = mach64_freelist_get( dev_priv );
+ if (copy_buf == NULL) {
+ DRM_ERROR("%s: couldn't get buffer in DMAGETPTR\n",
+ __FUNCTION__ );
+ return DRM_ERR(EAGAIN);
+ }
+
+ if ( (verify_ret =
+ copy_and_verify_from_user( GETBUFPTR( copy_buf ), buf, used )) == 0 ) {
+
+ copy_buf->used = used;
+
+ DMASETPTR( copy_buf );
+
+ if ( sarea_priv->dirty & ~MACH64_UPLOAD_CLIPRECTS ) {
+ ret = mach64_emit_state( filp, dev_priv );
+ if (ret < 0) return ret;
+ }
+
+ do {
+ /* Emit the next cliprect */
+ if ( i < sarea_priv->nbox ) {
+ ret = mach64_emit_cliprect(filp, dev_priv,
+ &sarea_priv->boxes[i]);
+ if ( ret < 0 ) {
+ /* failed to get buffer */
+ return ret;
+ } else if ( ret != 0 ) {
+ /* null intersection with scissor */
+ continue;
+ }
+ }
+ if ((i >= sarea_priv->nbox - 1))
+ done = 1;
+
+ /* Add the buffer to the DMA queue */
+ DMAADVANCE( dev_priv, done );
+
+ } while ( ++i < sarea_priv->nbox );
+ }
+
+ if (copy_buf->pending && !done) {
+ DMADISCARDBUF();
+ } else if (!done) {
+ /* This buffer wasn't used (no cliprects or verify failed), so place it back
+ * on the free list
+ */
+ struct list_head *ptr;
+ drm_mach64_freelist_t *entry;
+#if MACH64_EXTRA_CHECKING
+ list_for_each(ptr, &dev_priv->pending) {
+ entry = list_entry(ptr, drm_mach64_freelist_t, list);
+ if (copy_buf == entry->buf) {
+ DRM_ERROR( "%s: Trying to release a pending buf\n",
+ __FUNCTION__ );
+ return DRM_ERR(EFAULT);
+ }
+ }
+#endif
+ ptr = dev_priv->placeholders.next;
+ entry = list_entry(ptr, drm_mach64_freelist_t, list);
+ copy_buf->pending = 0;
+ copy_buf->used = 0;
+ entry->buf = copy_buf;
+ entry->discard = 1;
+ list_del(ptr);
+ list_add_tail(ptr, &dev_priv->free_list);
+ }
+ }
+
+ sarea_priv->dirty &= ~MACH64_UPLOAD_CLIPRECTS;
+ sarea_priv->nbox = 0;
+
+ return verify_ret;
+}
+
+
+static int mach64_dma_dispatch_blit( DRMFILE filp, drm_device_t *dev,
+ drm_mach64_blit_t *blit )
+{
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_device_dma_t *dma = dev->dma;
+ int dword_shift, dwords;
+ drm_buf_t *buf;
+ DMALOCALS;
+
+ /* The compiler won't optimize away a division by a variable,
+ * even if the only legal values are powers of two. Thus, we'll
+ * use a shift instead.
+ */
+ switch ( blit->format ) {
+ case MACH64_DATATYPE_ARGB8888:
+ dword_shift = 0;
+ break;
+ case MACH64_DATATYPE_ARGB1555:
+ case MACH64_DATATYPE_RGB565:
+ case MACH64_DATATYPE_VYUY422:
+ case MACH64_DATATYPE_YVYU422:
+ case MACH64_DATATYPE_ARGB4444:
+ dword_shift = 1;
+ break;
+ case MACH64_DATATYPE_CI8:
+ case MACH64_DATATYPE_RGB8:
+ dword_shift = 2;
+ break;
+ default:
+ DRM_ERROR( "invalid blit format %d\n", blit->format );
+ return DRM_ERR(EINVAL);
+ }
+
+ /* Dispatch the blit buffer.
+ */
+ buf = dma->buflist[blit->idx];
+
+ if ( buf->filp != filp ) {
+ DRM_ERROR( "process %d (filp %p) using buffer with filp %p\n",
+ DRM_CURRENTPID, filp, buf->filp );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", blit->idx );
+ return DRM_ERR(EINVAL);
+ }
+
+ /* Set buf->used to the bytes of blit data based on the blit dimensions
+ * and verify the size. When the setup is emitted to the buffer with
+ * the DMA* macros below, buf->used is incremented to include the bytes
+ * used for setup as well as the blit data.
+ */
+ dwords = (blit->width * blit->height) >> dword_shift;
+ buf->used = dwords << 2;
+ if ( buf->used <= 0 ||
+ buf->used > MACH64_BUFFER_SIZE - MACH64_HOSTDATA_BLIT_OFFSET ) {
+ DRM_ERROR( "Invalid blit size: %d bytes\n", buf->used );
+ return DRM_ERR(EINVAL);
+ }
+
+ /* FIXME: Use a last buffer flag and reduce the state emitted for subsequent,
+ * continuation buffers?
+ */
+
+ /* Blit via BM_HOSTDATA (gui-master) - like HOST_DATA[0-15], but doesn't require
+ * a register command every 16 dwords. State setup is added at the start of the
+ * buffer -- the client leaves space for this based on MACH64_HOSTDATA_BLIT_OFFSET
+ */
+ DMASETPTR( buf );
+
+ DMAOUTREG( MACH64_Z_CNTL, 0 );
+ DMAOUTREG( MACH64_SCALE_3D_CNTL, 0 );
+
+ DMAOUTREG( MACH64_SC_LEFT_RIGHT, 0 | ( 8191 << 16 ) ); /* no scissor */
+ DMAOUTREG( MACH64_SC_TOP_BOTTOM, 0 | ( 16383 << 16 ) );
+
+ DMAOUTREG( MACH64_CLR_CMP_CNTL, 0 ); /* disable */
+ DMAOUTREG( MACH64_GUI_TRAJ_CNTL,
+ MACH64_DST_X_LEFT_TO_RIGHT
+ | MACH64_DST_Y_TOP_TO_BOTTOM );
+
+ DMAOUTREG( MACH64_DP_PIX_WIDTH,
+ ( blit->format << 0 ) /* dst pix width */
+ | ( blit->format << 4 ) /* composite pix width */
+ | ( blit->format << 8 ) /* src pix width */
+ | ( blit->format << 16 ) /* host data pix width */
+ | ( blit->format << 28 ) /* scaler/3D pix width */
+ );
+
+ DMAOUTREG( MACH64_DP_WRITE_MASK, 0xffffffff ); /* enable all planes */
+ DMAOUTREG( MACH64_DP_MIX,
+ MACH64_BKGD_MIX_D
+ | MACH64_FRGD_MIX_S );
+ DMAOUTREG( MACH64_DP_SRC,
+ MACH64_BKGD_SRC_BKGD_CLR
+ | MACH64_FRGD_SRC_HOST
+ | MACH64_MONO_SRC_ONE );
+
+ DMAOUTREG( MACH64_DST_OFF_PITCH, (blit->pitch << 22) | (blit->offset >> 3) );
+ DMAOUTREG( MACH64_DST_X_Y, (blit->y << 16) | blit->x );
+ DMAOUTREG( MACH64_DST_WIDTH_HEIGHT, (blit->height << 16) | blit->width );
+
+ DRM_DEBUG( "%s: %d bytes\n", __FUNCTION__, buf->used );
+
+ /* Add the buffer to the queue */
+ DMAADVANCEHOSTDATA( dev_priv );
+
+ return 0;
+}
+
+/* ================================================================
+ * IOCTL functions
+ */
+
+int mach64_dma_clear( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_clear_t clear;
+ int ret;
+
+ DRM_DEBUG( "%s: pid=%d\n", __FUNCTION__, DRM_CURRENTPID );
+
+ LOCK_TEST_WITH_RETURN( dev, filp );
+
+ DRM_COPY_FROM_USER_IOCTL( clear, (drm_mach64_clear_t *)data,
+ sizeof(clear) );
+
+ if ( sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS )
+ sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS;
+
+ ret = mach64_dma_dispatch_clear( filp, dev, clear.flags,
+ clear.x, clear.y, clear.w, clear.h,
+ clear.clear_color, clear.clear_depth );
+
+ /* Make sure we restore the 3D state next time.
+ */
+ sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT |
+ MACH64_UPLOAD_MISC);
+ return ret;
+}
+
+int mach64_dma_swap( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ int ret;
+
+ DRM_DEBUG( "%s: pid=%d\n", __FUNCTION__, DRM_CURRENTPID );
+
+ LOCK_TEST_WITH_RETURN( dev, filp );
+
+ if ( sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS )
+ sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS;
+
+ ret = mach64_dma_dispatch_swap( filp, dev );
+
+ /* Make sure we restore the 3D state next time.
+ */
+ sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT |
+ MACH64_UPLOAD_MISC);
+ return ret;
+}
+
+int mach64_dma_vertex( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_vertex_t vertex;
+
+ LOCK_TEST_WITH_RETURN( dev, filp );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( vertex, (drm_mach64_vertex_t *)data,
+ sizeof(vertex) );
+
+ DRM_DEBUG( "%s: pid=%d buf=%p used=%lu discard=%d\n",
+ __FUNCTION__, DRM_CURRENTPID,
+ vertex.buf, vertex.used, vertex.discard );
+
+ if ( vertex.prim < 0 ||
+ vertex.prim > MACH64_PRIM_POLYGON ) {
+ DRM_ERROR( "buffer prim %d\n", vertex.prim );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( vertex.used > MACH64_BUFFER_SIZE || (vertex.used & 3) != 0) {
+ DRM_ERROR( "Invalid vertex buffer size: %lu bytes\n", vertex.used );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS )
+ sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS;
+
+ return mach64_dma_dispatch_vertex( filp, dev, vertex.prim, vertex.buf,
+ vertex.used, vertex.discard );
+}
+
+int mach64_dma_blit( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_device_dma_t *dma = dev->dma;
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_mach64_blit_t blit;
+ int ret;
+
+ LOCK_TEST_WITH_RETURN( dev, filp );
+
+ DRM_COPY_FROM_USER_IOCTL( blit, (drm_mach64_blit_t *)data,
+ sizeof(blit) );
+
+ DRM_DEBUG( "%s: pid=%d index=%d\n",
+ __FUNCTION__, DRM_CURRENTPID, blit.idx );
+
+ if ( blit.idx < 0 || blit.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ blit.idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+
+ ret = mach64_dma_dispatch_blit( filp, dev, &blit );
+
+ /* Make sure we restore the 3D state next time.
+ */
+ sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT |
+ MACH64_UPLOAD_MISC |
+ MACH64_UPLOAD_CLIPRECTS);
+
+ return ret;
+}
+
+int mach64_get_param( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_mach64_private_t *dev_priv = dev->dev_private;
+ drm_mach64_getparam_t param;
+ int value;
+
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( param, (drm_mach64_getparam_t *)data,
+ sizeof(param) );
+
+ switch ( param.param ) {
+ case MACH64_PARAM_FRAMES_QUEUED:
+ /* Needs lock since it calls mach64_ring_tick() */
+ LOCK_TEST_WITH_RETURN( dev, filp );
+ value = mach64_do_get_frames_queued( dev_priv );
+ break;
+ case MACH64_PARAM_IRQ_NR:
+ value = dev->irq;
+ break;
+ default:
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( DRM_COPY_TO_USER( param.value, &value, sizeof(int) ) ) {
+ DRM_ERROR( "copy_to_user\n" );
+ return DRM_ERR(EFAULT);
+ }
+
+ return 0;
+}