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authorAlan Hourihane <alanh@fairlite.demon.co.uk>2002-07-05 08:31:11 +0000
committerAlan Hourihane <alanh@fairlite.demon.co.uk>2002-07-05 08:31:11 +0000
commit74ef13fd009b9e37956e4207d0a5ed92f4b5e39a (patch)
treed4fa32d8f9b23872218ca5283cbd9b5fe02f6600 /shared-core/radeon_state.c
parent24025ca5f78c15ced14490532b4410730353d2c1 (diff)
merged bsd-3-0-0-branch
Diffstat (limited to 'shared-core/radeon_state.c')
-rw-r--r--shared-core/radeon_state.c1856
1 files changed, 1856 insertions, 0 deletions
diff --git a/shared-core/radeon_state.c b/shared-core/radeon_state.c
new file mode 100644
index 00000000..83fae493
--- /dev/null
+++ b/shared-core/radeon_state.c
@@ -0,0 +1,1856 @@
+/* radeon_state.c -- State support for Radeon -*- linux-c -*-
+ *
+ * Copyright 2000 VA Linux Systems, Inc., Fremont, California.
+ * 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
+ * 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:
+ * Gareth Hughes <gareth@valinux.com>
+ * Kevin E. Martin <martin@valinux.com>
+ */
+
+#include "radeon.h"
+#include "drmP.h"
+#include "drm.h"
+#include "radeon_drm.h"
+#include "radeon_drv.h"
+
+
+/* ================================================================
+ * CP hardware state programming functions
+ */
+
+static __inline__ void radeon_emit_clip_rect( drm_radeon_private_t *dev_priv,
+ drm_clip_rect_t *box )
+{
+ RING_LOCALS;
+
+ DRM_DEBUG( " box: x1=%d y1=%d x2=%d y2=%d\n",
+ box->x1, box->y1, box->x2, box->y2 );
+
+ BEGIN_RING( 4 );
+ OUT_RING( CP_PACKET0( RADEON_RE_TOP_LEFT, 0 ) );
+ OUT_RING( (box->y1 << 16) | box->x1 );
+ OUT_RING( CP_PACKET0( RADEON_RE_WIDTH_HEIGHT, 0 ) );
+/* OUT_RING( ((box->y2 - 1) << 16) | (box->x2 - 1) );*/
+ OUT_RING( (box->y2 << 16) | box->x2 );
+ ADVANCE_RING();
+}
+
+/* Emit 1.1 state
+ */
+static void radeon_emit_state( drm_radeon_private_t *dev_priv,
+ drm_radeon_context_regs_t *ctx,
+ drm_radeon_texture_regs_t *tex,
+ unsigned int dirty )
+{
+ RING_LOCALS;
+ DRM_DEBUG( "dirty=0x%08x\n", dirty );
+
+ if ( dirty & RADEON_UPLOAD_CONTEXT ) {
+ BEGIN_RING( 14 );
+ OUT_RING( CP_PACKET0( RADEON_PP_MISC, 6 ) );
+ OUT_RING( ctx->pp_misc );
+ OUT_RING( ctx->pp_fog_color );
+ OUT_RING( ctx->re_solid_color );
+ OUT_RING( ctx->rb3d_blendcntl );
+ OUT_RING( ctx->rb3d_depthoffset );
+ OUT_RING( ctx->rb3d_depthpitch );
+ OUT_RING( ctx->rb3d_zstencilcntl );
+ OUT_RING( CP_PACKET0( RADEON_PP_CNTL, 2 ) );
+ OUT_RING( ctx->pp_cntl );
+ OUT_RING( ctx->rb3d_cntl );
+ OUT_RING( ctx->rb3d_coloroffset );
+ OUT_RING( CP_PACKET0( RADEON_RB3D_COLORPITCH, 0 ) );
+ OUT_RING( ctx->rb3d_colorpitch );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_VERTFMT ) {
+ BEGIN_RING( 2 );
+ OUT_RING( CP_PACKET0( RADEON_SE_COORD_FMT, 0 ) );
+ OUT_RING( ctx->se_coord_fmt );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_LINE ) {
+ BEGIN_RING( 5 );
+ OUT_RING( CP_PACKET0( RADEON_RE_LINE_PATTERN, 1 ) );
+ OUT_RING( ctx->re_line_pattern );
+ OUT_RING( ctx->re_line_state );
+ OUT_RING( CP_PACKET0( RADEON_SE_LINE_WIDTH, 0 ) );
+ OUT_RING( ctx->se_line_width );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_BUMPMAP ) {
+ BEGIN_RING( 5 );
+ OUT_RING( CP_PACKET0( RADEON_PP_LUM_MATRIX, 0 ) );
+ OUT_RING( ctx->pp_lum_matrix );
+ OUT_RING( CP_PACKET0( RADEON_PP_ROT_MATRIX_0, 1 ) );
+ OUT_RING( ctx->pp_rot_matrix_0 );
+ OUT_RING( ctx->pp_rot_matrix_1 );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_MASKS ) {
+ BEGIN_RING( 4 );
+ OUT_RING( CP_PACKET0( RADEON_RB3D_STENCILREFMASK, 2 ) );
+ OUT_RING( ctx->rb3d_stencilrefmask );
+ OUT_RING( ctx->rb3d_ropcntl );
+ OUT_RING( ctx->rb3d_planemask );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_VIEWPORT ) {
+ BEGIN_RING( 7 );
+ OUT_RING( CP_PACKET0( RADEON_SE_VPORT_XSCALE, 5 ) );
+ OUT_RING( ctx->se_vport_xscale );
+ OUT_RING( ctx->se_vport_xoffset );
+ OUT_RING( ctx->se_vport_yscale );
+ OUT_RING( ctx->se_vport_yoffset );
+ OUT_RING( ctx->se_vport_zscale );
+ OUT_RING( ctx->se_vport_zoffset );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_SETUP ) {
+ BEGIN_RING( 4 );
+ OUT_RING( CP_PACKET0( RADEON_SE_CNTL, 0 ) );
+ OUT_RING( ctx->se_cntl );
+ OUT_RING( CP_PACKET0( RADEON_SE_CNTL_STATUS, 0 ) );
+ OUT_RING( ctx->se_cntl_status );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_MISC ) {
+ BEGIN_RING( 2 );
+ OUT_RING( CP_PACKET0( RADEON_RE_MISC, 0 ) );
+ OUT_RING( ctx->re_misc );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_TEX0 ) {
+ BEGIN_RING( 9 );
+ OUT_RING( CP_PACKET0( RADEON_PP_TXFILTER_0, 5 ) );
+ OUT_RING( tex[0].pp_txfilter );
+ OUT_RING( tex[0].pp_txformat );
+ OUT_RING( tex[0].pp_txoffset );
+ OUT_RING( tex[0].pp_txcblend );
+ OUT_RING( tex[0].pp_txablend );
+ OUT_RING( tex[0].pp_tfactor );
+ OUT_RING( CP_PACKET0( RADEON_PP_BORDER_COLOR_0, 0 ) );
+ OUT_RING( tex[0].pp_border_color );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_TEX1 ) {
+ BEGIN_RING( 9 );
+ OUT_RING( CP_PACKET0( RADEON_PP_TXFILTER_1, 5 ) );
+ OUT_RING( tex[1].pp_txfilter );
+ OUT_RING( tex[1].pp_txformat );
+ OUT_RING( tex[1].pp_txoffset );
+ OUT_RING( tex[1].pp_txcblend );
+ OUT_RING( tex[1].pp_txablend );
+ OUT_RING( tex[1].pp_tfactor );
+ OUT_RING( CP_PACKET0( RADEON_PP_BORDER_COLOR_1, 0 ) );
+ OUT_RING( tex[1].pp_border_color );
+ ADVANCE_RING();
+ }
+
+ if ( dirty & RADEON_UPLOAD_TEX2 ) {
+ BEGIN_RING( 9 );
+ OUT_RING( CP_PACKET0( RADEON_PP_TXFILTER_2, 5 ) );
+ OUT_RING( tex[2].pp_txfilter );
+ OUT_RING( tex[2].pp_txformat );
+ OUT_RING( tex[2].pp_txoffset );
+ OUT_RING( tex[2].pp_txcblend );
+ OUT_RING( tex[2].pp_txablend );
+ OUT_RING( tex[2].pp_tfactor );
+ OUT_RING( CP_PACKET0( RADEON_PP_BORDER_COLOR_2, 0 ) );
+ OUT_RING( tex[2].pp_border_color );
+ ADVANCE_RING();
+ }
+}
+
+/* Emit 1.2 state
+ */
+static void radeon_emit_state2( drm_radeon_private_t *dev_priv,
+ drm_radeon_state_t *state )
+{
+ RING_LOCALS;
+
+ if (state->dirty & RADEON_UPLOAD_ZBIAS) {
+ BEGIN_RING( 3 );
+ OUT_RING( CP_PACKET0( RADEON_SE_ZBIAS_FACTOR, 1 ) );
+ OUT_RING( state->context2.se_zbias_factor );
+ OUT_RING( state->context2.se_zbias_constant );
+ ADVANCE_RING();
+ }
+
+ radeon_emit_state( dev_priv, &state->context,
+ state->tex, state->dirty );
+}
+
+/* New (1.3) state mechanism. 3 commands (packet, scalar, vector) in
+ * 1.3 cmdbuffers allow all previous state to be updated as well as
+ * the tcl scalar and vector areas.
+ */
+static struct {
+ int start;
+ int len;
+ const char *name;
+} packet[RADEON_MAX_STATE_PACKETS] = {
+ { RADEON_PP_MISC,7,"RADEON_PP_MISC" },
+ { RADEON_PP_CNTL,3,"RADEON_PP_CNTL" },
+ { RADEON_RB3D_COLORPITCH,1,"RADEON_RB3D_COLORPITCH" },
+ { RADEON_RE_LINE_PATTERN,2,"RADEON_RE_LINE_PATTERN" },
+ { RADEON_SE_LINE_WIDTH,1,"RADEON_SE_LINE_WIDTH" },
+ { RADEON_PP_LUM_MATRIX,1,"RADEON_PP_LUM_MATRIX" },
+ { RADEON_PP_ROT_MATRIX_0,2,"RADEON_PP_ROT_MATRIX_0" },
+ { RADEON_RB3D_STENCILREFMASK,3,"RADEON_RB3D_STENCILREFMASK" },
+ { RADEON_SE_VPORT_XSCALE,6,"RADEON_SE_VPORT_XSCALE" },
+ { RADEON_SE_CNTL,2,"RADEON_SE_CNTL" },
+ { RADEON_SE_CNTL_STATUS,1,"RADEON_SE_CNTL_STATUS" },
+ { RADEON_RE_MISC,1,"RADEON_RE_MISC" },
+ { RADEON_PP_TXFILTER_0,6,"RADEON_PP_TXFILTER_0" },
+ { RADEON_PP_BORDER_COLOR_0,1,"RADEON_PP_BORDER_COLOR_0" },
+ { RADEON_PP_TXFILTER_1,6,"RADEON_PP_TXFILTER_1" },
+ { RADEON_PP_BORDER_COLOR_1,1,"RADEON_PP_BORDER_COLOR_1" },
+ { RADEON_PP_TXFILTER_2,6,"RADEON_PP_TXFILTER_2" },
+ { RADEON_PP_BORDER_COLOR_2,1,"RADEON_PP_BORDER_COLOR_2" },
+ { RADEON_SE_ZBIAS_FACTOR,2,"RADEON_SE_ZBIAS_FACTOR" },
+ { RADEON_SE_TCL_OUTPUT_VTX_FMT,11,"RADEON_SE_TCL_OUTPUT_VTX_FMT" },
+ { RADEON_SE_TCL_MATERIAL_EMMISSIVE_RED,17,"RADEON_SE_TCL_MATERIAL_EMMISSIVE_RED" },
+};
+
+
+
+
+
+
+
+
+
+
+#if RADEON_PERFORMANCE_BOXES
+/* ================================================================
+ * Performance monitoring functions
+ */
+
+static void radeon_clear_box( drm_radeon_private_t *dev_priv,
+ int x, int y, int w, int h,
+ int r, int g, int b )
+{
+ u32 pitch, offset;
+ u32 color;
+ RING_LOCALS;
+
+ switch ( dev_priv->color_fmt ) {
+ case RADEON_COLOR_FORMAT_RGB565:
+ color = (((r & 0xf8) << 8) |
+ ((g & 0xfc) << 3) |
+ ((b & 0xf8) >> 3));
+ break;
+ case RADEON_COLOR_FORMAT_ARGB8888:
+ default:
+ color = (((0xff) << 24) | (r << 16) | (g << 8) | b);
+ break;
+ }
+
+ offset = dev_priv->back_offset;
+ pitch = dev_priv->back_pitch >> 3;
+
+ BEGIN_RING( 6 );
+
+ OUT_RING( CP_PACKET3( RADEON_CNTL_PAINT_MULTI, 4 ) );
+ OUT_RING( RADEON_GMC_DST_PITCH_OFFSET_CNTL |
+ RADEON_GMC_BRUSH_SOLID_COLOR |
+ (dev_priv->color_fmt << 8) |
+ RADEON_GMC_SRC_DATATYPE_COLOR |
+ RADEON_ROP3_P |
+ RADEON_GMC_CLR_CMP_CNTL_DIS );
+
+ OUT_RING( (pitch << 22) | (offset >> 5) );
+ OUT_RING( color );
+
+ OUT_RING( (x << 16) | y );
+ OUT_RING( (w << 16) | h );
+
+ ADVANCE_RING();
+}
+
+static void radeon_cp_performance_boxes( drm_radeon_private_t *dev_priv )
+{
+ if ( atomic_read( &dev_priv->idle_count ) == 0 ) {
+ radeon_clear_box( dev_priv, 64, 4, 8, 8, 0, 255, 0 );
+ } else {
+ atomic_set( &dev_priv->idle_count, 0 );
+ }
+}
+
+#endif
+
+
+/* ================================================================
+ * CP command dispatch functions
+ */
+
+static void radeon_cp_dispatch_clear( drm_device_t *dev,
+ drm_radeon_clear_t *clear,
+ drm_radeon_clear_rect_t *depth_boxes )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_radeon_depth_clear_t *depth_clear = &dev_priv->depth_clear;
+ int nbox = sarea_priv->nbox;
+ drm_clip_rect_t *pbox = sarea_priv->boxes;
+ unsigned int flags = clear->flags;
+ u32 rb3d_cntl = 0, rb3d_stencilrefmask= 0;
+ int i;
+ RING_LOCALS;
+ DRM_DEBUG( "flags = 0x%x\n", flags );
+
+ if ( dev_priv->page_flipping && dev_priv->current_page == 1 ) {
+ unsigned int tmp = flags;
+
+ flags &= ~(RADEON_FRONT | RADEON_BACK);
+ if ( tmp & RADEON_FRONT ) flags |= RADEON_BACK;
+ if ( tmp & RADEON_BACK ) flags |= RADEON_FRONT;
+ }
+
+ /* We have to clear the depth and/or stencil buffers by
+ * rendering a quad into just those buffers. Thus, we have to
+ * make sure the 3D engine is configured correctly.
+ */
+ if ( flags & (RADEON_DEPTH | RADEON_STENCIL) ) {
+ rb3d_cntl = depth_clear->rb3d_cntl;
+
+ if ( flags & RADEON_DEPTH ) {
+ rb3d_cntl |= RADEON_Z_ENABLE;
+ } else {
+ rb3d_cntl &= ~RADEON_Z_ENABLE;
+ }
+
+ if ( flags & RADEON_STENCIL ) {
+ rb3d_cntl |= RADEON_STENCIL_ENABLE;
+ rb3d_stencilrefmask = clear->depth_mask; /* misnamed field */
+ } else {
+ rb3d_cntl &= ~RADEON_STENCIL_ENABLE;
+ rb3d_stencilrefmask = 0x00000000;
+ }
+ }
+
+ 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",
+ x, y, w, h, flags );
+
+ if ( flags & (RADEON_FRONT | RADEON_BACK) ) {
+ BEGIN_RING( 4 );
+
+ /* Ensure the 3D stream is idle before doing a
+ * 2D fill to clear the front or back buffer.
+ */
+ RADEON_WAIT_UNTIL_3D_IDLE();
+
+ OUT_RING( CP_PACKET0( RADEON_DP_WRITE_MASK, 0 ) );
+ OUT_RING( clear->color_mask );
+
+ ADVANCE_RING();
+
+ /* Make sure we restore the 3D state next time.
+ */
+ dev_priv->sarea_priv->ctx_owner = 0;
+ }
+
+ if ( flags & RADEON_FRONT ) {
+ BEGIN_RING( 6 );
+
+ OUT_RING( CP_PACKET3( RADEON_CNTL_PAINT_MULTI, 4 ) );
+ OUT_RING( RADEON_GMC_DST_PITCH_OFFSET_CNTL |
+ RADEON_GMC_BRUSH_SOLID_COLOR |
+ (dev_priv->color_fmt << 8) |
+ RADEON_GMC_SRC_DATATYPE_COLOR |
+ RADEON_ROP3_P |
+ RADEON_GMC_CLR_CMP_CNTL_DIS );
+
+ OUT_RING( dev_priv->front_pitch_offset );
+ OUT_RING( clear->clear_color );
+
+ OUT_RING( (x << 16) | y );
+ OUT_RING( (w << 16) | h );
+
+ ADVANCE_RING();
+ }
+
+ if ( flags & RADEON_BACK ) {
+ BEGIN_RING( 6 );
+
+ OUT_RING( CP_PACKET3( RADEON_CNTL_PAINT_MULTI, 4 ) );
+ OUT_RING( RADEON_GMC_DST_PITCH_OFFSET_CNTL |
+ RADEON_GMC_BRUSH_SOLID_COLOR |
+ (dev_priv->color_fmt << 8) |
+ RADEON_GMC_SRC_DATATYPE_COLOR |
+ RADEON_ROP3_P |
+ RADEON_GMC_CLR_CMP_CNTL_DIS );
+
+ OUT_RING( dev_priv->back_pitch_offset );
+ OUT_RING( clear->clear_color );
+
+ OUT_RING( (x << 16) | y );
+ OUT_RING( (w << 16) | h );
+
+ ADVANCE_RING();
+ }
+
+ if ( flags & (RADEON_DEPTH | RADEON_STENCIL) ) {
+
+ radeon_emit_clip_rect( dev_priv,
+ &sarea_priv->boxes[i] );
+
+ BEGIN_RING( 28 );
+
+ RADEON_WAIT_UNTIL_2D_IDLE();
+
+ OUT_RING( CP_PACKET0( RADEON_PP_CNTL, 1 ) );
+ OUT_RING( 0x00000000 );
+ OUT_RING( rb3d_cntl );
+
+ OUT_RING_REG( RADEON_RB3D_ZSTENCILCNTL,
+ depth_clear->rb3d_zstencilcntl );
+ OUT_RING_REG( RADEON_RB3D_STENCILREFMASK,
+ rb3d_stencilrefmask );
+ OUT_RING_REG( RADEON_RB3D_PLANEMASK,
+ 0x00000000 );
+ OUT_RING_REG( RADEON_SE_CNTL,
+ depth_clear->se_cntl );
+
+ /* Radeon 7500 doesn't like vertices without
+ * color.
+ */
+ OUT_RING( CP_PACKET3( RADEON_3D_DRAW_IMMD, 13 ) );
+ OUT_RING( RADEON_VTX_Z_PRESENT |
+ RADEON_VTX_PKCOLOR_PRESENT);
+ OUT_RING( (RADEON_PRIM_TYPE_RECT_LIST |
+ RADEON_PRIM_WALK_RING |
+ RADEON_MAOS_ENABLE |
+ RADEON_VTX_FMT_RADEON_MODE |
+ (3 << RADEON_NUM_VERTICES_SHIFT)) );
+
+ OUT_RING( depth_boxes[i].ui[CLEAR_X1] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_Y1] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_DEPTH] );
+ OUT_RING( 0x0 );
+
+ OUT_RING( depth_boxes[i].ui[CLEAR_X1] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_Y2] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_DEPTH] );
+ OUT_RING( 0x0 );
+
+ OUT_RING( depth_boxes[i].ui[CLEAR_X2] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_Y2] );
+ OUT_RING( depth_boxes[i].ui[CLEAR_DEPTH] );
+ OUT_RING( 0x0 );
+
+ ADVANCE_RING();
+
+ /* Make sure we restore the 3D state next time.
+ */
+ dev_priv->sarea_priv->ctx_owner = 0;
+ }
+ }
+
+ /* Increment the clear counter. The client-side 3D driver must
+ * wait on this value before performing the clear ioctl. We
+ * need this because the card's so damned fast...
+ */
+ dev_priv->sarea_priv->last_clear++;
+
+ BEGIN_RING( 4 );
+
+ RADEON_CLEAR_AGE( dev_priv->sarea_priv->last_clear );
+ RADEON_WAIT_UNTIL_IDLE();
+
+ ADVANCE_RING();
+}
+
+static void radeon_cp_dispatch_swap( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ int nbox = sarea_priv->nbox;
+ drm_clip_rect_t *pbox = sarea_priv->boxes;
+ int i;
+ RING_LOCALS;
+ DRM_DEBUG( "\n" );
+
+#if RADEON_PERFORMANCE_BOXES
+ /* Do some trivial performance monitoring...
+ */
+ radeon_cp_performance_boxes( dev_priv );
+#endif
+
+ /* Wait for the 3D stream to idle before dispatching the bitblt.
+ * This will prevent data corruption between the two streams.
+ */
+ BEGIN_RING( 2 );
+
+ RADEON_WAIT_UNTIL_3D_IDLE();
+
+ ADVANCE_RING();
+
+ 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",
+ x, y, w, h );
+
+ BEGIN_RING( 7 );
+
+ OUT_RING( CP_PACKET3( RADEON_CNTL_BITBLT_MULTI, 5 ) );
+ OUT_RING( RADEON_GMC_SRC_PITCH_OFFSET_CNTL |
+ RADEON_GMC_DST_PITCH_OFFSET_CNTL |
+ RADEON_GMC_BRUSH_NONE |
+ (dev_priv->color_fmt << 8) |
+ RADEON_GMC_SRC_DATATYPE_COLOR |
+ RADEON_ROP3_S |
+ RADEON_DP_SRC_SOURCE_MEMORY |
+ RADEON_GMC_CLR_CMP_CNTL_DIS |
+ RADEON_GMC_WR_MSK_DIS );
+
+ /* Make this work even if front & back are flipped:
+ */
+ if (dev_priv->current_page == 0) {
+ OUT_RING( dev_priv->back_pitch_offset );
+ OUT_RING( dev_priv->front_pitch_offset );
+ }
+ else {
+ OUT_RING( dev_priv->front_pitch_offset );
+ OUT_RING( dev_priv->back_pitch_offset );
+ }
+
+ OUT_RING( (x << 16) | y );
+ OUT_RING( (x << 16) | y );
+ OUT_RING( (w << 16) | h );
+
+ ADVANCE_RING();
+ }
+
+ /* Increment the frame counter. The client-side 3D driver must
+ * throttle the framerate by waiting for this value before
+ * performing the swapbuffer ioctl.
+ */
+ dev_priv->sarea_priv->last_frame++;
+
+ BEGIN_RING( 4 );
+
+ RADEON_FRAME_AGE( dev_priv->sarea_priv->last_frame );
+ RADEON_WAIT_UNTIL_2D_IDLE();
+
+ ADVANCE_RING();
+}
+
+static void radeon_cp_dispatch_flip( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+ DRM_DEBUG( "page=%d\n", dev_priv->current_page );
+
+#if RADEON_PERFORMANCE_BOXES
+ /* Do some trivial performance monitoring...
+ */
+ radeon_cp_performance_boxes( dev_priv );
+#endif
+
+ BEGIN_RING( 4 );
+
+ RADEON_WAIT_UNTIL_3D_IDLE();
+/*
+ RADEON_WAIT_UNTIL_PAGE_FLIPPED();
+*/
+ OUT_RING( CP_PACKET0( RADEON_CRTC_OFFSET, 0 ) );
+
+ if ( dev_priv->current_page == 0 ) {
+ OUT_RING( dev_priv->back_offset );
+ dev_priv->current_page = 1;
+ } else {
+ OUT_RING( dev_priv->front_offset );
+ dev_priv->current_page = 0;
+ }
+
+ ADVANCE_RING();
+
+ /* Increment the frame counter. The client-side 3D driver must
+ * throttle the framerate by waiting for this value before
+ * performing the swapbuffer ioctl.
+ */
+ dev_priv->sarea_priv->last_frame++;
+ dev_priv->sarea_priv->pfCurrentPage = dev_priv->current_page;
+
+ BEGIN_RING( 2 );
+
+ RADEON_FRAME_AGE( dev_priv->sarea_priv->last_frame );
+
+ ADVANCE_RING();
+}
+
+static int bad_prim_vertex_nr( int primitive, int nr )
+{
+ switch (primitive & RADEON_PRIM_TYPE_MASK) {
+ case RADEON_PRIM_TYPE_NONE:
+ case RADEON_PRIM_TYPE_POINT:
+ return nr < 1;
+ case RADEON_PRIM_TYPE_LINE:
+ return (nr & 1) || nr == 0;
+ case RADEON_PRIM_TYPE_LINE_STRIP:
+ return nr < 2;
+ case RADEON_PRIM_TYPE_TRI_LIST:
+ case RADEON_PRIM_TYPE_3VRT_POINT_LIST:
+ case RADEON_PRIM_TYPE_3VRT_LINE_LIST:
+ case RADEON_PRIM_TYPE_RECT_LIST:
+ return nr % 3 || nr == 0;
+ case RADEON_PRIM_TYPE_TRI_FAN:
+ case RADEON_PRIM_TYPE_TRI_STRIP:
+ return nr < 3;
+ default:
+ return 1;
+ }
+}
+
+
+
+typedef struct {
+ unsigned int start;
+ unsigned int finish;
+ unsigned int prim;
+ unsigned int numverts;
+ unsigned int offset;
+ unsigned int vc_format;
+} drm_radeon_tcl_prim_t;
+
+static void radeon_cp_dispatch_vertex( drm_device_t *dev,
+ drm_buf_t *buf,
+ drm_radeon_tcl_prim_t *prim,
+ drm_clip_rect_t *boxes,
+ int nbox )
+
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_clip_rect_t box;
+ int offset = dev_priv->agp_buffers_offset + buf->offset + prim->start;
+ int numverts = (int)prim->numverts;
+ int i = 0;
+ RING_LOCALS;
+
+ DRM_DEBUG("hwprim 0x%x vfmt 0x%x %d..%d %d verts\n",
+ prim->prim,
+ prim->vc_format,
+ prim->start,
+ prim->finish,
+ prim->numverts);
+
+ if (bad_prim_vertex_nr( prim->prim, prim->numverts )) {
+ DRM_ERROR( "bad prim %x numverts %d\n",
+ prim->prim, prim->numverts );
+ return;
+ }
+
+ do {
+ /* Emit the next cliprect */
+ if ( i < nbox ) {
+ if (DRM_COPY_FROM_USER_UNCHECKED( &box, &boxes[i], sizeof(box) ))
+ return;
+
+ radeon_emit_clip_rect( dev_priv, &box );
+ }
+
+ /* Emit the vertex buffer rendering commands */
+ BEGIN_RING( 5 );
+
+ OUT_RING( CP_PACKET3( RADEON_3D_RNDR_GEN_INDX_PRIM, 3 ) );
+ OUT_RING( offset );
+ OUT_RING( numverts );
+ OUT_RING( prim->vc_format );
+ OUT_RING( prim->prim | RADEON_PRIM_WALK_LIST |
+ RADEON_COLOR_ORDER_RGBA |
+ RADEON_VTX_FMT_RADEON_MODE |
+ (numverts << RADEON_NUM_VERTICES_SHIFT) );
+
+ ADVANCE_RING();
+
+ i++;
+ } while ( i < nbox );
+}
+
+
+
+static void radeon_cp_discard_buffer( drm_device_t *dev, drm_buf_t *buf )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
+ RING_LOCALS;
+
+ buf_priv->age = ++dev_priv->sarea_priv->last_dispatch;
+
+ /* Emit the vertex buffer age */
+ BEGIN_RING( 2 );
+ RADEON_DISPATCH_AGE( buf_priv->age );
+ ADVANCE_RING();
+
+ buf->pending = 1;
+ buf->used = 0;
+}
+
+static void radeon_cp_dispatch_indirect( drm_device_t *dev,
+ drm_buf_t *buf,
+ int start, int end )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+ DRM_DEBUG( "indirect: buf=%d s=0x%x e=0x%x\n",
+ buf->idx, start, end );
+
+ if ( start != end ) {
+ int offset = (dev_priv->agp_buffers_offset
+ + buf->offset + start);
+ int dwords = (end - start + 3) / sizeof(u32);
+
+ /* Indirect buffer data must be an even number of
+ * dwords, so if we've been given an odd number we must
+ * pad the data with a Type-2 CP packet.
+ */
+ if ( dwords & 1 ) {
+ u32 *data = (u32 *)
+ ((char *)dev_priv->buffers->handle
+ + buf->offset + start);
+ data[dwords++] = RADEON_CP_PACKET2;
+ }
+
+ /* Fire off the indirect buffer */
+ BEGIN_RING( 3 );
+
+ OUT_RING( CP_PACKET0( RADEON_CP_IB_BASE, 1 ) );
+ OUT_RING( offset );
+ OUT_RING( dwords );
+
+ ADVANCE_RING();
+ }
+}
+
+
+static void radeon_cp_dispatch_indices( drm_device_t *dev,
+ drm_buf_t *elt_buf,
+ drm_radeon_tcl_prim_t *prim,
+ drm_clip_rect_t *boxes,
+ int nbox )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_clip_rect_t box;
+ int offset = dev_priv->agp_buffers_offset + prim->offset;
+ u32 *data;
+ int dwords;
+ int i = 0;
+ int start = prim->start + RADEON_INDEX_PRIM_OFFSET;
+ int count = (prim->finish - start) / sizeof(u16);
+
+ DRM_DEBUG("hwprim 0x%x vfmt 0x%x %d..%d offset: %x nr %d\n",
+ prim->prim,
+ prim->vc_format,
+ prim->start,
+ prim->finish,
+ prim->offset,
+ prim->numverts);
+
+ if (bad_prim_vertex_nr( prim->prim, count )) {
+ DRM_ERROR( "bad prim %x count %d\n",
+ prim->prim, count );
+ return;
+ }
+
+
+ if ( start >= prim->finish ||
+ (prim->start & 0x7) ) {
+ DRM_ERROR( "buffer prim %d\n", prim->prim );
+ return;
+ }
+
+ dwords = (prim->finish - prim->start + 3) / sizeof(u32);
+
+ data = (u32 *)((char *)dev_priv->buffers->handle +
+ elt_buf->offset + prim->start);
+
+ data[0] = CP_PACKET3( RADEON_3D_RNDR_GEN_INDX_PRIM, dwords-2 );
+ data[1] = offset;
+ data[2] = prim->numverts;
+ data[3] = prim->vc_format;
+ data[4] = (prim->prim |
+ RADEON_PRIM_WALK_IND |
+ RADEON_COLOR_ORDER_RGBA |
+ RADEON_VTX_FMT_RADEON_MODE |
+ (count << RADEON_NUM_VERTICES_SHIFT) );
+
+ do {
+ if ( i < nbox ) {
+ if (DRM_COPY_FROM_USER_UNCHECKED( &box, &boxes[i], sizeof(box) ))
+ return;
+
+ radeon_emit_clip_rect( dev_priv, &box );
+ }
+
+ radeon_cp_dispatch_indirect( dev, elt_buf,
+ prim->start,
+ prim->finish );
+
+ i++;
+ } while ( i < nbox );
+
+}
+
+#define RADEON_MAX_TEXTURE_SIZE (RADEON_BUFFER_SIZE - 8 * sizeof(u32))
+
+static int radeon_cp_dispatch_texture( drm_device_t *dev,
+ drm_radeon_texture_t *tex,
+ drm_radeon_tex_image_t *image )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_buf_t *buf;
+ u32 format;
+ u32 *buffer;
+ const u8 *data;
+ int size, dwords, tex_width, blit_width;
+ u32 y, height;
+ int ret = 0, i;
+ RING_LOCALS;
+
+ /* FIXME: Be smarter about this...
+ */
+ buf = radeon_freelist_get( dev );
+ if ( !buf ) return DRM_ERR(EAGAIN);
+
+ DRM_DEBUG( "tex: ofs=0x%x p=%d f=%d x=%hd y=%hd w=%hd h=%hd\n",
+ tex->offset >> 10, tex->pitch, tex->format,
+ image->x, image->y, image->width, image->height );
+
+ /* 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 ( tex->format ) {
+ case RADEON_TXFORMAT_ARGB8888:
+ case RADEON_TXFORMAT_RGBA8888:
+ format = RADEON_COLOR_FORMAT_ARGB8888;
+ tex_width = tex->width * 4;
+ blit_width = image->width * 4;
+ break;
+ case RADEON_TXFORMAT_AI88:
+ case RADEON_TXFORMAT_ARGB1555:
+ case RADEON_TXFORMAT_RGB565:
+ case RADEON_TXFORMAT_ARGB4444:
+ format = RADEON_COLOR_FORMAT_RGB565;
+ tex_width = tex->width * 2;
+ blit_width = image->width * 2;
+ break;
+ case RADEON_TXFORMAT_I8:
+ case RADEON_TXFORMAT_RGB332:
+ format = RADEON_COLOR_FORMAT_CI8;
+ tex_width = tex->width * 1;
+ blit_width = image->width * 1;
+ break;
+ default:
+ DRM_ERROR( "invalid texture format %d\n", tex->format );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_DEBUG( " tex=%dx%d blit=%d\n",
+ tex_width, tex->height, blit_width );
+
+ /* Flush the pixel cache. This ensures no pixel data gets mixed
+ * up with the texture data from the host data blit, otherwise
+ * part of the texture image may be corrupted.
+ */
+ BEGIN_RING( 4 );
+
+ RADEON_FLUSH_CACHE();
+ RADEON_WAIT_UNTIL_IDLE();
+
+ ADVANCE_RING();
+
+#ifdef __BIG_ENDIAN
+ /* The Mesa texture functions provide the data in little endian as the
+ * chip wants it, but we need to compensate for the fact that the CP
+ * ring gets byte-swapped
+ */
+ BEGIN_RING( 2 );
+ OUT_RING_REG( RADEON_RBBM_GUICNTL, RADEON_HOST_DATA_SWAP_32BIT );
+ ADVANCE_RING();
+#endif
+
+ /* Make a copy of the parameters in case we have to update them
+ * for a multi-pass texture blit.
+ */
+ y = image->y;
+ height = image->height;
+ data = (const u8 *)image->data;
+
+ size = height * blit_width;
+
+ if ( size > RADEON_MAX_TEXTURE_SIZE ) {
+ /* Texture image is too large, do a multipass upload */
+ ret = DRM_ERR(EAGAIN);
+
+ /* Adjust the blit size to fit the indirect buffer */
+ height = RADEON_MAX_TEXTURE_SIZE / blit_width;
+ size = height * blit_width;
+
+ /* Update the input parameters for next time */
+ image->y += height;
+ image->height -= height;
+ image->data = (const char *)image->data + size;
+
+ if ( DRM_COPY_TO_USER( tex->image, image, sizeof(*image) ) ) {
+ DRM_ERROR( "EFAULT on tex->image\n" );
+ return DRM_ERR(EFAULT);
+ }
+ } else if ( size < 4 && size > 0 ) {
+ size = 4;
+ }
+
+ dwords = size / 4;
+
+ /* Dispatch the indirect buffer.
+ */
+ buffer = (u32 *)((char *)dev_priv->buffers->handle + buf->offset);
+
+ buffer[0] = CP_PACKET3( RADEON_CNTL_HOSTDATA_BLT, dwords + 6 );
+ buffer[1] = (RADEON_GMC_DST_PITCH_OFFSET_CNTL |
+ RADEON_GMC_BRUSH_NONE |
+ (format << 8) |
+ RADEON_GMC_SRC_DATATYPE_COLOR |
+ RADEON_ROP3_S |
+ RADEON_DP_SRC_SOURCE_HOST_DATA |
+ RADEON_GMC_CLR_CMP_CNTL_DIS |
+ RADEON_GMC_WR_MSK_DIS);
+
+ buffer[2] = (tex->pitch << 22) | (tex->offset >> 10);
+ buffer[3] = 0xffffffff;
+ buffer[4] = 0xffffffff;
+ buffer[5] = (y << 16) | image->x;
+ buffer[6] = (height << 16) | image->width;
+ buffer[7] = dwords;
+
+ buffer += 8;
+
+ if ( tex_width >= 32 ) {
+ /* Texture image width is larger than the minimum, so we
+ * can upload it directly.
+ */
+ if ( DRM_COPY_FROM_USER( buffer, data, dwords * sizeof(u32) ) ) {
+ DRM_ERROR( "EFAULT on data, %d dwords\n", dwords );
+ return DRM_ERR(EFAULT);
+ }
+ } else {
+ /* Texture image width is less than the minimum, so we
+ * need to pad out each image scanline to the minimum
+ * width.
+ */
+ for ( i = 0 ; i < tex->height ; i++ ) {
+ if ( DRM_COPY_FROM_USER( buffer, data, tex_width ) ) {
+ DRM_ERROR( "EFAULT on pad, %d bytes\n",
+ tex_width );
+ return DRM_ERR(EFAULT);
+ }
+ buffer += 8;
+ data += tex_width;
+ }
+ }
+
+ buf->pid = DRM_CURRENTPID;
+ buf->used = (dwords + 8) * sizeof(u32);
+
+ radeon_cp_dispatch_indirect( dev, buf, 0, buf->used );
+ radeon_cp_discard_buffer( dev, buf );
+
+ /* Flush the pixel cache after the blit completes. This ensures
+ * the texture data is written out to memory before rendering
+ * continues.
+ */
+ BEGIN_RING( 4 );
+
+ RADEON_FLUSH_CACHE();
+ RADEON_WAIT_UNTIL_2D_IDLE();
+
+ ADVANCE_RING();
+
+ return ret;
+}
+
+static void radeon_cp_dispatch_stipple( drm_device_t *dev, u32 *stipple )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ int i;
+ RING_LOCALS;
+ DRM_DEBUG( "\n" );
+
+ BEGIN_RING( 35 );
+
+ OUT_RING( CP_PACKET0( RADEON_RE_STIPPLE_ADDR, 0 ) );
+ OUT_RING( 0x00000000 );
+
+ OUT_RING( CP_PACKET0_TABLE( RADEON_RE_STIPPLE_DATA, 31 ) );
+ for ( i = 0 ; i < 32 ; i++ ) {
+ OUT_RING( stipple[i] );
+ }
+
+ ADVANCE_RING();
+}
+
+
+/* ================================================================
+ * IOCTL functions
+ */
+
+int radeon_cp_clear( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_radeon_clear_t clear;
+ drm_radeon_clear_rect_t depth_boxes[RADEON_NR_SAREA_CLIPRECTS];
+ DRM_DEBUG( "\n" );
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ DRM_COPY_FROM_USER_IOCTL( clear, (drm_radeon_clear_t *)data,
+ sizeof(clear) );
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+
+ if ( sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS )
+ sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS;
+
+ if ( DRM_COPY_FROM_USER( &depth_boxes, clear.depth_boxes,
+ sarea_priv->nbox * sizeof(depth_boxes[0]) ) )
+ return DRM_ERR(EFAULT);
+
+ radeon_cp_dispatch_clear( dev, &clear, depth_boxes );
+
+ COMMIT_RING();
+ return 0;
+}
+
+
+
+/* Not sure why this isn't set all the time:
+ */
+static int radeon_do_init_pageflip( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+
+ DRM_DEBUG( "\n" );
+
+ dev_priv->crtc_offset_cntl = RADEON_READ( RADEON_CRTC_OFFSET_CNTL );
+
+ BEGIN_RING( 4 );
+ RADEON_WAIT_UNTIL_3D_IDLE();
+ OUT_RING( CP_PACKET0( RADEON_CRTC_OFFSET_CNTL, 0 ) );
+ OUT_RING( dev_priv->crtc_offset_cntl | RADEON_CRTC_OFFSET_FLIP_CNTL );
+ ADVANCE_RING();
+
+ dev_priv->page_flipping = 1;
+ dev_priv->current_page = 0;
+ dev_priv->sarea_priv->pfCurrentPage = dev_priv->current_page;
+
+ return 0;
+}
+
+int radeon_do_cleanup_pageflip( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ DRM_DEBUG( "\n" );
+
+ if (dev_priv->current_page != 0)
+ radeon_cp_dispatch_flip( dev );
+
+ /* FIXME: If the X server changes screen resolution, it
+ * clobbers the value of RADEON_CRTC_OFFSET_CNTL, above,
+ * leading to a flashing efect.
+ */
+ dev_priv->page_flipping = 0;
+ return 0;
+}
+
+/* Swapping and flipping are different operations, need different ioctls.
+ * They can & should be intermixed to support multiple 3d windows.
+ */
+int radeon_cp_flip( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ DRM_DEBUG( "\n" );
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+
+ if (!dev_priv->page_flipping)
+ radeon_do_init_pageflip( dev );
+
+ radeon_cp_dispatch_flip( dev );
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_swap( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ DRM_DEBUG( "\n" );
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+
+ if ( sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS )
+ sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS;
+
+ radeon_cp_dispatch_swap( dev );
+ dev_priv->sarea_priv->ctx_owner = 0;
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_vertex( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf;
+ drm_radeon_vertex_t vertex;
+ drm_radeon_tcl_prim_t prim;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( vertex, (drm_radeon_vertex_t *)data,
+ sizeof(vertex) );
+
+ DRM_DEBUG( "pid=%d index=%d count=%d discard=%d\n",
+ DRM_CURRENTPID,
+ vertex.idx, vertex.count, vertex.discard );
+
+ if ( vertex.idx < 0 || vertex.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ vertex.idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+ if ( vertex.prim < 0 ||
+ vertex.prim > RADEON_PRIM_TYPE_3VRT_LINE_LIST ) {
+ DRM_ERROR( "buffer prim %d\n", vertex.prim );
+ return DRM_ERR(EINVAL);
+ }
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ buf = dma->buflist[vertex.idx];
+
+ if ( buf->pid != DRM_CURRENTPID ) {
+ DRM_ERROR( "process %d using buffer owned by %d\n",
+ DRM_CURRENTPID, buf->pid );
+ return DRM_ERR(EINVAL);
+ }
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", vertex.idx );
+ return DRM_ERR(EINVAL);
+ }
+
+ /* Build up a prim_t record:
+ */
+ if (vertex.count) {
+ buf->used = vertex.count; /* not used? */
+
+ if ( sarea_priv->dirty & ~RADEON_UPLOAD_CLIPRECTS ) {
+ radeon_emit_state( dev_priv,
+ &sarea_priv->context_state,
+ sarea_priv->tex_state,
+ sarea_priv->dirty );
+
+ sarea_priv->dirty &= ~(RADEON_UPLOAD_TEX0IMAGES |
+ RADEON_UPLOAD_TEX1IMAGES |
+ RADEON_UPLOAD_TEX2IMAGES |
+ RADEON_REQUIRE_QUIESCENCE);
+ }
+
+ prim.start = 0;
+ prim.finish = vertex.count; /* unused */
+ prim.prim = vertex.prim;
+ prim.numverts = vertex.count;
+ prim.vc_format = dev_priv->sarea_priv->vc_format;
+
+ radeon_cp_dispatch_vertex( dev, buf, &prim,
+ dev_priv->sarea_priv->boxes,
+ dev_priv->sarea_priv->nbox );
+ }
+
+ if (vertex.discard) {
+ radeon_cp_discard_buffer( dev, buf );
+ }
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_indices( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf;
+ drm_radeon_indices_t elts;
+ drm_radeon_tcl_prim_t prim;
+ int count;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( elts, (drm_radeon_indices_t *)data,
+ sizeof(elts) );
+
+ DRM_DEBUG( "pid=%d index=%d start=%d end=%d discard=%d\n",
+ DRM_CURRENTPID,
+ elts.idx, elts.start, elts.end, elts.discard );
+
+ if ( elts.idx < 0 || elts.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ elts.idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+ if ( elts.prim < 0 ||
+ elts.prim > RADEON_PRIM_TYPE_3VRT_LINE_LIST ) {
+ DRM_ERROR( "buffer prim %d\n", elts.prim );
+ return DRM_ERR(EINVAL);
+ }
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ buf = dma->buflist[elts.idx];
+
+ if ( buf->pid != DRM_CURRENTPID ) {
+ DRM_ERROR( "process %d using buffer owned by %d\n",
+ DRM_CURRENTPID, buf->pid );
+ return DRM_ERR(EINVAL);
+ }
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", elts.idx );
+ return DRM_ERR(EINVAL);
+ }
+
+ count = (elts.end - elts.start) / sizeof(u16);
+ elts.start -= RADEON_INDEX_PRIM_OFFSET;
+
+ if ( elts.start & 0x7 ) {
+ DRM_ERROR( "misaligned buffer 0x%x\n", elts.start );
+ return DRM_ERR(EINVAL);
+ }
+ if ( elts.start < buf->used ) {
+ DRM_ERROR( "no header 0x%x - 0x%x\n", elts.start, buf->used );
+ return DRM_ERR(EINVAL);
+ }
+
+ buf->used = elts.end;
+
+ if ( sarea_priv->dirty & ~RADEON_UPLOAD_CLIPRECTS ) {
+ radeon_emit_state( dev_priv,
+ &sarea_priv->context_state,
+ sarea_priv->tex_state,
+ sarea_priv->dirty );
+
+ sarea_priv->dirty &= ~(RADEON_UPLOAD_TEX0IMAGES |
+ RADEON_UPLOAD_TEX1IMAGES |
+ RADEON_UPLOAD_TEX2IMAGES |
+ RADEON_REQUIRE_QUIESCENCE);
+ }
+
+
+ /* Build up a prim_t record:
+ */
+ prim.start = elts.start;
+ prim.finish = elts.end;
+ prim.prim = elts.prim;
+ prim.offset = 0; /* offset from start of dma buffers */
+ prim.numverts = RADEON_MAX_VB_VERTS; /* duh */
+ prim.vc_format = dev_priv->sarea_priv->vc_format;
+
+ radeon_cp_dispatch_indices( dev, buf, &prim,
+ dev_priv->sarea_priv->boxes,
+ dev_priv->sarea_priv->nbox );
+ if (elts.discard) {
+ radeon_cp_discard_buffer( dev, buf );
+ }
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_texture( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_texture_t tex;
+ drm_radeon_tex_image_t image;
+ int ret;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ DRM_COPY_FROM_USER_IOCTL( tex, (drm_radeon_texture_t *)data, sizeof(tex) );
+
+ if ( tex.image == NULL ) {
+ DRM_ERROR( "null texture image!\n" );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( DRM_COPY_FROM_USER( &image,
+ (drm_radeon_tex_image_t *)tex.image,
+ sizeof(image) ) )
+ return DRM_ERR(EFAULT);
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ ret = radeon_cp_dispatch_texture( dev, &tex, &image );
+
+ COMMIT_RING();
+ return ret;
+}
+
+int radeon_cp_stipple( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_stipple_t stipple;
+ u32 mask[32];
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ DRM_COPY_FROM_USER_IOCTL( stipple, (drm_radeon_stipple_t *)data,
+ sizeof(stipple) );
+
+ if ( DRM_COPY_FROM_USER( &mask, stipple.mask, 32 * sizeof(u32) ) )
+ return DRM_ERR(EFAULT);
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+
+ radeon_cp_dispatch_stipple( dev, mask );
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_indirect( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf;
+ drm_radeon_indirect_t indirect;
+ RING_LOCALS;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( indirect, (drm_radeon_indirect_t *)data,
+ sizeof(indirect) );
+
+ DRM_DEBUG( "indirect: idx=%d s=%d e=%d d=%d\n",
+ indirect.idx, indirect.start,
+ indirect.end, indirect.discard );
+
+ if ( indirect.idx < 0 || indirect.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ indirect.idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+
+ buf = dma->buflist[indirect.idx];
+
+ if ( buf->pid != DRM_CURRENTPID ) {
+ DRM_ERROR( "process %d using buffer owned by %d\n",
+ DRM_CURRENTPID, buf->pid );
+ return DRM_ERR(EINVAL);
+ }
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", indirect.idx );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( indirect.start < buf->used ) {
+ DRM_ERROR( "reusing indirect: start=0x%x actual=0x%x\n",
+ indirect.start, buf->used );
+ return DRM_ERR(EINVAL);
+ }
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ buf->used = indirect.end;
+
+ /* Wait for the 3D stream to idle before the indirect buffer
+ * containing 2D acceleration commands is processed.
+ */
+ BEGIN_RING( 2 );
+
+ RADEON_WAIT_UNTIL_3D_IDLE();
+
+ ADVANCE_RING();
+
+ /* Dispatch the indirect buffer full of commands from the
+ * X server. This is insecure and is thus only available to
+ * privileged clients.
+ */
+ radeon_cp_dispatch_indirect( dev, buf, indirect.start, indirect.end );
+ if (indirect.discard) {
+ radeon_cp_discard_buffer( dev, buf );
+ }
+
+
+ COMMIT_RING();
+ return 0;
+}
+
+int radeon_cp_vertex2( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf;
+ drm_radeon_vertex2_t vertex;
+ int i;
+ unsigned char laststate;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( vertex, (drm_radeon_vertex2_t *)data,
+ sizeof(vertex) );
+
+ DRM_DEBUG( "pid=%d index=%d discard=%d\n",
+ DRM_CURRENTPID,
+ vertex.idx, vertex.discard );
+
+ if ( vertex.idx < 0 || vertex.idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ vertex.idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+ buf = dma->buflist[vertex.idx];
+
+ if ( buf->pid != DRM_CURRENTPID ) {
+ DRM_ERROR( "process %d using buffer owned by %d\n",
+ DRM_CURRENTPID, buf->pid );
+ return DRM_ERR(EINVAL);
+ }
+
+ if ( buf->pending ) {
+ DRM_ERROR( "sending pending buffer %d\n", vertex.idx );
+ return DRM_ERR(EINVAL);
+ }
+
+ if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS)
+ return DRM_ERR(EINVAL);
+
+ for (laststate = 0xff, i = 0 ; i < vertex.nr_prims ; i++) {
+ drm_radeon_prim_t prim;
+ drm_radeon_tcl_prim_t tclprim;
+
+ if ( DRM_COPY_FROM_USER( &prim, &vertex.prim[i], sizeof(prim) ) )
+ return DRM_ERR(EFAULT);
+
+ if ( prim.stateidx != laststate ) {
+ drm_radeon_state_t state;
+
+ if ( DRM_COPY_FROM_USER( &state,
+ &vertex.state[prim.stateidx],
+ sizeof(state) ) )
+ return DRM_ERR(EFAULT);
+
+ radeon_emit_state2( dev_priv, &state );
+
+ laststate = prim.stateidx;
+ }
+
+ tclprim.start = prim.start;
+ tclprim.finish = prim.finish;
+ tclprim.prim = prim.prim;
+ tclprim.vc_format = prim.vc_format;
+
+ if ( prim.prim & RADEON_PRIM_WALK_IND ) {
+ tclprim.offset = prim.numverts * 64;
+ tclprim.numverts = RADEON_MAX_VB_VERTS; /* duh */
+
+ radeon_cp_dispatch_indices( dev, buf, &tclprim,
+ sarea_priv->boxes,
+ sarea_priv->nbox);
+ } else {
+ tclprim.numverts = prim.numverts;
+ tclprim.offset = 0; /* not used */
+
+ radeon_cp_dispatch_vertex( dev, buf, &tclprim,
+ sarea_priv->boxes,
+ sarea_priv->nbox);
+ }
+
+ if (sarea_priv->nbox == 1)
+ sarea_priv->nbox = 0;
+ }
+
+ if ( vertex.discard ) {
+ radeon_cp_discard_buffer( dev, buf );
+ }
+
+ COMMIT_RING();
+ return 0;
+}
+
+
+static int radeon_emit_packets(
+ drm_radeon_private_t *dev_priv,
+ drm_radeon_cmd_header_t header,
+ drm_radeon_cmd_buffer_t *cmdbuf )
+{
+ int id = (int)header.packet.packet_id;
+ int sz = packet[id].len;
+ int reg = packet[id].start;
+ int *data = (int *)cmdbuf->buf;
+ RING_LOCALS;
+
+ if (sz * sizeof(int) > cmdbuf->bufsz)
+ return DRM_ERR(EINVAL);
+
+ BEGIN_RING(sz+1);
+ OUT_RING( CP_PACKET0( reg, (sz-1) ) );
+ OUT_RING_USER_TABLE( data, sz );
+ ADVANCE_RING();
+
+ cmdbuf->buf += sz * sizeof(int);
+ cmdbuf->bufsz -= sz * sizeof(int);
+ return 0;
+}
+
+static __inline__ int radeon_emit_scalars(
+ drm_radeon_private_t *dev_priv,
+ drm_radeon_cmd_header_t header,
+ drm_radeon_cmd_buffer_t *cmdbuf )
+{
+ int sz = header.scalars.count;
+ int *data = (int *)cmdbuf->buf;
+ int start = header.scalars.offset;
+ int stride = header.scalars.stride;
+ RING_LOCALS;
+
+ BEGIN_RING( 3+sz );
+ OUT_RING( CP_PACKET0( RADEON_SE_TCL_SCALAR_INDX_REG, 0 ) );
+ OUT_RING( start | (stride << RADEON_SCAL_INDX_DWORD_STRIDE_SHIFT));
+ OUT_RING( CP_PACKET0_TABLE( RADEON_SE_TCL_SCALAR_DATA_REG, sz-1 ) );
+ OUT_RING_USER_TABLE( data, sz );
+ ADVANCE_RING();
+ cmdbuf->buf += sz * sizeof(int);
+ cmdbuf->bufsz -= sz * sizeof(int);
+ return 0;
+}
+
+static __inline__ int radeon_emit_vectors(
+ drm_radeon_private_t *dev_priv,
+ drm_radeon_cmd_header_t header,
+ drm_radeon_cmd_buffer_t *cmdbuf )
+{
+ int sz = header.vectors.count;
+ int *data = (int *)cmdbuf->buf;
+ int start = header.vectors.offset;
+ int stride = header.vectors.stride;
+ RING_LOCALS;
+
+ BEGIN_RING( 3+sz );
+ OUT_RING( CP_PACKET0( RADEON_SE_TCL_VECTOR_INDX_REG, 0 ) );
+ OUT_RING( start | (stride << RADEON_VEC_INDX_OCTWORD_STRIDE_SHIFT));
+ OUT_RING( CP_PACKET0_TABLE( RADEON_SE_TCL_VECTOR_DATA_REG, (sz-1) ) );
+ OUT_RING_USER_TABLE( data, sz );
+ ADVANCE_RING();
+
+ cmdbuf->buf += sz * sizeof(int);
+ cmdbuf->bufsz -= sz * sizeof(int);
+ return 0;
+}
+
+
+static int radeon_emit_packet3( drm_device_t *dev,
+ drm_radeon_cmd_buffer_t *cmdbuf )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ int cmdsz, tmp;
+ int *cmd = (int *)cmdbuf->buf;
+ RING_LOCALS;
+
+
+ DRM_DEBUG("\n");
+
+ if (DRM_GET_USER_UNCHECKED( tmp, &cmd[0]))
+ return DRM_ERR(EFAULT);
+
+ cmdsz = 2 + ((tmp & RADEON_CP_PACKET_COUNT_MASK) >> 16);
+
+ if ((tmp & 0xc0000000) != RADEON_CP_PACKET3 ||
+ cmdsz * 4 > cmdbuf->bufsz)
+ return DRM_ERR(EINVAL);
+
+ BEGIN_RING( cmdsz );
+ OUT_RING_USER_TABLE( cmd, cmdsz );
+ ADVANCE_RING();
+
+ cmdbuf->buf += cmdsz * 4;
+ cmdbuf->bufsz -= cmdsz * 4;
+ return 0;
+}
+
+
+static int radeon_emit_packet3_cliprect( drm_device_t *dev,
+ drm_radeon_cmd_buffer_t *cmdbuf )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_clip_rect_t box;
+ int cmdsz, tmp;
+ int *cmd = (int *)cmdbuf->buf;
+ drm_clip_rect_t *boxes = cmdbuf->boxes;
+ int i = 0;
+ RING_LOCALS;
+
+ DRM_DEBUG("\n");
+
+ if (DRM_GET_USER_UNCHECKED( tmp, &cmd[0]))
+ return DRM_ERR(EFAULT);
+
+ cmdsz = 2 + ((tmp & RADEON_CP_PACKET_COUNT_MASK) >> 16);
+
+ if ((tmp & 0xc0000000) != RADEON_CP_PACKET3 ||
+ cmdsz * 4 > cmdbuf->bufsz)
+ return DRM_ERR(EINVAL);
+
+ do {
+ if ( i < cmdbuf->nbox ) {
+ if (DRM_COPY_FROM_USER_UNCHECKED( &box, &boxes[i], sizeof(box) ))
+ return DRM_ERR(EFAULT);
+ radeon_emit_clip_rect( dev_priv, &box );
+ }
+
+ BEGIN_RING( cmdsz );
+ OUT_RING_USER_TABLE( cmd, cmdsz );
+ ADVANCE_RING();
+
+ } while ( ++i < cmdbuf->nbox );
+
+ if (cmdbuf->nbox == 1)
+ cmdbuf->nbox = 0;
+
+ cmdbuf->buf += cmdsz * 4;
+ cmdbuf->bufsz -= cmdsz * 4;
+ return 0;
+}
+
+
+
+int radeon_cp_cmdbuf( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_device_dma_t *dma = dev->dma;
+ drm_buf_t *buf = 0;
+ int idx;
+ drm_radeon_cmd_buffer_t cmdbuf;
+ drm_radeon_cmd_header_t header;
+
+ LOCK_TEST_WITH_RETURN( dev );
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( cmdbuf, (drm_radeon_cmd_buffer_t *)data,
+ sizeof(cmdbuf) );
+
+ DRM_DEBUG( "pid=%d\n", DRM_CURRENTPID );
+ RING_SPACE_TEST_WITH_RETURN( dev_priv );
+ VB_AGE_TEST_WITH_RETURN( dev_priv );
+
+
+ if (DRM_VERIFYAREA_READ( cmdbuf.buf, cmdbuf.bufsz ))
+ return DRM_ERR(EFAULT);
+
+ if (cmdbuf.nbox &&
+ DRM_VERIFYAREA_READ(cmdbuf.boxes,
+ cmdbuf.nbox * sizeof(drm_clip_rect_t)))
+ return DRM_ERR(EFAULT);
+
+ while ( cmdbuf.bufsz >= sizeof(header) ) {
+
+ if (DRM_GET_USER_UNCHECKED( header.i, (int *)cmdbuf.buf )) {
+ DRM_ERROR("__get_user %p\n", cmdbuf.buf);
+ return DRM_ERR(EFAULT);
+ }
+
+ cmdbuf.buf += sizeof(header);
+ cmdbuf.bufsz -= sizeof(header);
+
+ switch (header.header.cmd_type) {
+ case RADEON_CMD_PACKET:
+ if (radeon_emit_packets( dev_priv, header, &cmdbuf )) {
+ DRM_ERROR("radeon_emit_packets failed\n");
+ return DRM_ERR(EINVAL);
+ }
+ break;
+
+ case RADEON_CMD_SCALARS:
+ if (radeon_emit_scalars( dev_priv, header, &cmdbuf )) {
+ DRM_ERROR("radeon_emit_scalars failed\n");
+ return DRM_ERR(EINVAL);
+ }
+ break;
+
+ case RADEON_CMD_VECTORS:
+ if (radeon_emit_vectors( dev_priv, header, &cmdbuf )) {
+ DRM_ERROR("radeon_emit_vectors failed\n");
+ return DRM_ERR(EINVAL);
+ }
+ break;
+
+ case RADEON_CMD_DMA_DISCARD:
+ idx = header.dma.buf_idx;
+ if ( idx < 0 || idx >= dma->buf_count ) {
+ DRM_ERROR( "buffer index %d (of %d max)\n",
+ idx, dma->buf_count - 1 );
+ return DRM_ERR(EINVAL);
+ }
+
+ buf = dma->buflist[idx];
+ if ( buf->pid != DRM_CURRENTPID || buf->pending ) {
+ DRM_ERROR( "bad buffer\n" );
+ return DRM_ERR(EINVAL);
+ }
+
+ radeon_cp_discard_buffer( dev, buf );
+ break;
+
+ case RADEON_CMD_PACKET3:
+ if (radeon_emit_packet3( dev, &cmdbuf )) {
+ DRM_ERROR("radeon_emit_packet3 failed\n");
+ return DRM_ERR(EINVAL);
+ }
+ break;
+
+ case RADEON_CMD_PACKET3_CLIP:
+ if (radeon_emit_packet3_cliprect( dev, &cmdbuf )) {
+ DRM_ERROR("radeon_emit_packet3_clip failed\n");
+ return DRM_ERR(EINVAL);
+ }
+ break;
+
+ default:
+ DRM_ERROR("bad cmd_type %d at %p\n",
+ header.header.cmd_type,
+ cmdbuf.buf - sizeof(header));
+ return DRM_ERR(EINVAL);
+ }
+ }
+
+
+ COMMIT_RING();
+ return 0;
+}
+
+
+
+int radeon_cp_getparam( DRM_IOCTL_ARGS )
+{
+ DRM_DEVICE;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_getparam_t param;
+ int value;
+
+ if ( !dev_priv ) {
+ DRM_ERROR( "%s called with no initialization\n", __func__ );
+ return DRM_ERR(EINVAL);
+ }
+
+ DRM_COPY_FROM_USER_IOCTL( param, (drm_radeon_getparam_t *)data,
+ sizeof(param) );
+
+ DRM_DEBUG( "pid=%d\n", DRM_CURRENTPID );
+
+ switch( param.param ) {
+ case RADEON_PARAM_AGP_BUFFER_OFFSET:
+ value = dev_priv->agp_buffers_offset;
+ 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;
+}