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drm/shared/mach64_state.c

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/* 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>
*/
#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;
}
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