diff options
Diffstat (limited to 'drivers/char/drm/mga_state.c')
| -rw-r--r-- | drivers/char/drm/mga_state.c | 1123 |
1 files changed, 1123 insertions, 0 deletions
diff --git a/drivers/char/drm/mga_state.c b/drivers/char/drm/mga_state.c new file mode 100644 index 0000000..3c7a8f5 --- /dev/null +++ b/drivers/char/drm/mga_state.c @@ -0,0 +1,1123 @@ +/* mga_state.c -- State support for MGA G200/G400 -*- linux-c -*- + * Created: Thu Jan 27 02:53:43 2000 by jhartmann@precisioninsight.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, 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 + * VA LINUX SYSTEMS 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: + * Jeff Hartmann <jhartmann@valinux.com> + * Keith Whitwell <keith@tungstengraphics.com> + * + * Rewritten by: + * Gareth Hughes <gareth@valinux.com> + */ + +#include "drmP.h" +#include "drm.h" +#include "mga_drm.h" +#include "mga_drv.h" + +/* ================================================================ + * DMA hardware state programming functions + */ + +static void mga_emit_clip_rect( drm_mga_private_t *dev_priv, + drm_clip_rect_t *box ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + unsigned int pitch = dev_priv->front_pitch; + DMA_LOCALS; + + BEGIN_DMA( 2 ); + + /* Force reset of DWGCTL on G400 (eliminates clip disable bit). + */ + if ( dev_priv->chipset == MGA_CARD_TYPE_G400 ) { + DMA_BLOCK( MGA_DWGCTL, ctx->dwgctl, + MGA_LEN + MGA_EXEC, 0x80000000, + MGA_DWGCTL, ctx->dwgctl, + MGA_LEN + MGA_EXEC, 0x80000000 ); + } + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_CXBNDRY, (box->x2 << 16) | box->x1, + MGA_YTOP, box->y1 * pitch, + MGA_YBOT, box->y2 * pitch ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g200_emit_context( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + DMA_LOCALS; + + BEGIN_DMA( 3 ); + + DMA_BLOCK( MGA_DSTORG, ctx->dstorg, + MGA_MACCESS, ctx->maccess, + MGA_PLNWT, ctx->plnwt, + MGA_DWGCTL, ctx->dwgctl ); + + DMA_BLOCK( MGA_ALPHACTRL, ctx->alphactrl, + MGA_FOGCOL, ctx->fogcolor, + MGA_WFLAG, ctx->wflag, + MGA_ZORG, dev_priv->depth_offset ); + + DMA_BLOCK( MGA_FCOL, ctx->fcol, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000 ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g400_emit_context( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + DMA_LOCALS; + + BEGIN_DMA( 4 ); + + DMA_BLOCK( MGA_DSTORG, ctx->dstorg, + MGA_MACCESS, ctx->maccess, + MGA_PLNWT, ctx->plnwt, + MGA_DWGCTL, ctx->dwgctl ); + + DMA_BLOCK( MGA_ALPHACTRL, ctx->alphactrl, + MGA_FOGCOL, ctx->fogcolor, + MGA_WFLAG, ctx->wflag, + MGA_ZORG, dev_priv->depth_offset ); + + DMA_BLOCK( MGA_WFLAG1, ctx->wflag, + MGA_TDUALSTAGE0, ctx->tdualstage0, + MGA_TDUALSTAGE1, ctx->tdualstage1, + MGA_FCOL, ctx->fcol ); + + DMA_BLOCK( MGA_STENCIL, ctx->stencil, + MGA_STENCILCTL, ctx->stencilctl, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000 ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g200_emit_tex0( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0]; + DMA_LOCALS; + + BEGIN_DMA( 4 ); + + DMA_BLOCK( MGA_TEXCTL2, tex->texctl2, + MGA_TEXCTL, tex->texctl, + MGA_TEXFILTER, tex->texfilter, + MGA_TEXBORDERCOL, tex->texbordercol ); + + DMA_BLOCK( MGA_TEXORG, tex->texorg, + MGA_TEXORG1, tex->texorg1, + MGA_TEXORG2, tex->texorg2, + MGA_TEXORG3, tex->texorg3 ); + + DMA_BLOCK( MGA_TEXORG4, tex->texorg4, + MGA_TEXWIDTH, tex->texwidth, + MGA_TEXHEIGHT, tex->texheight, + MGA_WR24, tex->texwidth ); + + DMA_BLOCK( MGA_WR34, tex->texheight, + MGA_TEXTRANS, 0x0000ffff, + MGA_TEXTRANSHIGH, 0x0000ffff, + MGA_DMAPAD, 0x00000000 ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g400_emit_tex0( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[0]; + DMA_LOCALS; + +/* printk("mga_g400_emit_tex0 %x %x %x\n", tex->texorg, */ +/* tex->texctl, tex->texctl2); */ + + BEGIN_DMA( 6 ); + + DMA_BLOCK( MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC, + MGA_TEXCTL, tex->texctl, + MGA_TEXFILTER, tex->texfilter, + MGA_TEXBORDERCOL, tex->texbordercol ); + + DMA_BLOCK( MGA_TEXORG, tex->texorg, + MGA_TEXORG1, tex->texorg1, + MGA_TEXORG2, tex->texorg2, + MGA_TEXORG3, tex->texorg3 ); + + DMA_BLOCK( MGA_TEXORG4, tex->texorg4, + MGA_TEXWIDTH, tex->texwidth, + MGA_TEXHEIGHT, tex->texheight, + MGA_WR49, 0x00000000 ); + + DMA_BLOCK( MGA_WR57, 0x00000000, + MGA_WR53, 0x00000000, + MGA_WR61, 0x00000000, + MGA_WR52, MGA_G400_WR_MAGIC ); + + DMA_BLOCK( MGA_WR60, MGA_G400_WR_MAGIC, + MGA_WR54, tex->texwidth | MGA_G400_WR_MAGIC, + MGA_WR62, tex->texheight | MGA_G400_WR_MAGIC, + MGA_DMAPAD, 0x00000000 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_TEXTRANS, 0x0000ffff, + MGA_TEXTRANSHIGH, 0x0000ffff ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g400_emit_tex1( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[1]; + DMA_LOCALS; + +/* printk("mga_g400_emit_tex1 %x %x %x\n", tex->texorg, */ +/* tex->texctl, tex->texctl2); */ + + BEGIN_DMA( 5 ); + + DMA_BLOCK( MGA_TEXCTL2, (tex->texctl2 | + MGA_MAP1_ENABLE | + MGA_G400_TC2_MAGIC), + MGA_TEXCTL, tex->texctl, + MGA_TEXFILTER, tex->texfilter, + MGA_TEXBORDERCOL, tex->texbordercol ); + + DMA_BLOCK( MGA_TEXORG, tex->texorg, + MGA_TEXORG1, tex->texorg1, + MGA_TEXORG2, tex->texorg2, + MGA_TEXORG3, tex->texorg3 ); + + DMA_BLOCK( MGA_TEXORG4, tex->texorg4, + MGA_TEXWIDTH, tex->texwidth, + MGA_TEXHEIGHT, tex->texheight, + MGA_WR49, 0x00000000 ); + + DMA_BLOCK( MGA_WR57, 0x00000000, + MGA_WR53, 0x00000000, + MGA_WR61, 0x00000000, + MGA_WR52, tex->texwidth | MGA_G400_WR_MAGIC ); + + DMA_BLOCK( MGA_WR60, tex->texheight | MGA_G400_WR_MAGIC, + MGA_TEXTRANS, 0x0000ffff, + MGA_TEXTRANSHIGH, 0x0000ffff, + MGA_TEXCTL2, tex->texctl2 | MGA_G400_TC2_MAGIC ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g200_emit_pipe( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int pipe = sarea_priv->warp_pipe; + DMA_LOCALS; + + BEGIN_DMA( 3 ); + + DMA_BLOCK( MGA_WIADDR, MGA_WMODE_SUSPEND, + MGA_WVRTXSZ, 0x00000007, + MGA_WFLAG, 0x00000000, + MGA_WR24, 0x00000000 ); + + DMA_BLOCK( MGA_WR25, 0x00000100, + MGA_WR34, 0x00000000, + MGA_WR42, 0x0000ffff, + MGA_WR60, 0x0000ffff ); + + /* Padding required to to hardware bug. + */ + DMA_BLOCK( MGA_DMAPAD, 0xffffffff, + MGA_DMAPAD, 0xffffffff, + MGA_DMAPAD, 0xffffffff, + MGA_WIADDR, (dev_priv->warp_pipe_phys[pipe] | + MGA_WMODE_START | + MGA_WAGP_ENABLE) ); + + ADVANCE_DMA(); +} + +static __inline__ void mga_g400_emit_pipe( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int pipe = sarea_priv->warp_pipe; + DMA_LOCALS; + +/* printk("mga_g400_emit_pipe %x\n", pipe); */ + + BEGIN_DMA( 10 ); + + DMA_BLOCK( MGA_WIADDR2, MGA_WMODE_SUSPEND, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000 ); + + if ( pipe & MGA_T2 ) { + DMA_BLOCK( MGA_WVRTXSZ, 0x00001e09, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000 ); + + DMA_BLOCK( MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x1e000000 ); + } else { + if ( dev_priv->warp_pipe & MGA_T2 ) { + /* Flush the WARP pipe */ + DMA_BLOCK( MGA_YDST, 0x00000000, + MGA_FXLEFT, 0x00000000, + MGA_FXRIGHT, 0x00000001, + MGA_DWGCTL, MGA_DWGCTL_FLUSH ); + + DMA_BLOCK( MGA_LEN + MGA_EXEC, 0x00000001, + MGA_DWGSYNC, 0x00007000, + MGA_TEXCTL2, MGA_G400_TC2_MAGIC, + MGA_LEN + MGA_EXEC, 0x00000000 ); + + DMA_BLOCK( MGA_TEXCTL2, (MGA_DUALTEX | + MGA_G400_TC2_MAGIC), + MGA_LEN + MGA_EXEC, 0x00000000, + MGA_TEXCTL2, MGA_G400_TC2_MAGIC, + MGA_DMAPAD, 0x00000000 ); + } + + DMA_BLOCK( MGA_WVRTXSZ, 0x00001807, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000 ); + + DMA_BLOCK( MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x00000000, + MGA_WACCEPTSEQ, 0x18000000 ); + } + + DMA_BLOCK( MGA_WFLAG, 0x00000000, + MGA_WFLAG1, 0x00000000, + MGA_WR56, MGA_G400_WR56_MAGIC, + MGA_DMAPAD, 0x00000000 ); + + DMA_BLOCK( MGA_WR49, 0x00000000, /* tex0 */ + MGA_WR57, 0x00000000, /* tex0 */ + MGA_WR53, 0x00000000, /* tex1 */ + MGA_WR61, 0x00000000 ); /* tex1 */ + + DMA_BLOCK( MGA_WR54, MGA_G400_WR_MAGIC, /* tex0 width */ + MGA_WR62, MGA_G400_WR_MAGIC, /* tex0 height */ + MGA_WR52, MGA_G400_WR_MAGIC, /* tex1 width */ + MGA_WR60, MGA_G400_WR_MAGIC ); /* tex1 height */ + + /* Padding required to to hardware bug */ + DMA_BLOCK( MGA_DMAPAD, 0xffffffff, + MGA_DMAPAD, 0xffffffff, + MGA_DMAPAD, 0xffffffff, + MGA_WIADDR2, (dev_priv->warp_pipe_phys[pipe] | + MGA_WMODE_START | + MGA_WAGP_ENABLE) ); + + ADVANCE_DMA(); +} + +static void mga_g200_emit_state( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int dirty = sarea_priv->dirty; + + if ( sarea_priv->warp_pipe != dev_priv->warp_pipe ) { + mga_g200_emit_pipe( dev_priv ); + dev_priv->warp_pipe = sarea_priv->warp_pipe; + } + + if ( dirty & MGA_UPLOAD_CONTEXT ) { + mga_g200_emit_context( dev_priv ); + sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT; + } + + if ( dirty & MGA_UPLOAD_TEX0 ) { + mga_g200_emit_tex0( dev_priv ); + sarea_priv->dirty &= ~MGA_UPLOAD_TEX0; + } +} + +static void mga_g400_emit_state( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int dirty = sarea_priv->dirty; + int multitex = sarea_priv->warp_pipe & MGA_T2; + + if ( sarea_priv->warp_pipe != dev_priv->warp_pipe ) { + mga_g400_emit_pipe( dev_priv ); + dev_priv->warp_pipe = sarea_priv->warp_pipe; + } + + if ( dirty & MGA_UPLOAD_CONTEXT ) { + mga_g400_emit_context( dev_priv ); + sarea_priv->dirty &= ~MGA_UPLOAD_CONTEXT; + } + + if ( dirty & MGA_UPLOAD_TEX0 ) { + mga_g400_emit_tex0( dev_priv ); + sarea_priv->dirty &= ~MGA_UPLOAD_TEX0; + } + + if ( (dirty & MGA_UPLOAD_TEX1) && multitex ) { + mga_g400_emit_tex1( dev_priv ); + sarea_priv->dirty &= ~MGA_UPLOAD_TEX1; + } +} + + +/* ================================================================ + * SAREA state verification + */ + +/* Disallow all write destinations except the front and backbuffer. + */ +static int mga_verify_context( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + + if ( ctx->dstorg != dev_priv->front_offset && + ctx->dstorg != dev_priv->back_offset ) { + DRM_ERROR( "*** bad DSTORG: %x (front %x, back %x)\n\n", + ctx->dstorg, dev_priv->front_offset, + dev_priv->back_offset ); + ctx->dstorg = 0; + return DRM_ERR(EINVAL); + } + + return 0; +} + +/* Disallow texture reads from PCI space. + */ +static int mga_verify_tex( drm_mga_private_t *dev_priv, int unit ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_texture_regs_t *tex = &sarea_priv->tex_state[unit]; + unsigned int org; + + org = tex->texorg & (MGA_TEXORGMAP_MASK | MGA_TEXORGACC_MASK); + + if ( org == (MGA_TEXORGMAP_SYSMEM | MGA_TEXORGACC_PCI) ) { + DRM_ERROR( "*** bad TEXORG: 0x%x, unit %d\n", + tex->texorg, unit ); + tex->texorg = 0; + return DRM_ERR(EINVAL); + } + + return 0; +} + +static int mga_verify_state( drm_mga_private_t *dev_priv ) +{ + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + unsigned int dirty = sarea_priv->dirty; + int ret = 0; + + if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS ) + sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS; + + if ( dirty & MGA_UPLOAD_CONTEXT ) + ret |= mga_verify_context( dev_priv ); + + if ( dirty & MGA_UPLOAD_TEX0 ) + ret |= mga_verify_tex( dev_priv, 0 ); + + if ( dev_priv->chipset == MGA_CARD_TYPE_G400 ) { + if ( dirty & MGA_UPLOAD_TEX1 ) + ret |= mga_verify_tex( dev_priv, 1 ); + + if ( dirty & MGA_UPLOAD_PIPE ) + ret |= ( sarea_priv->warp_pipe > MGA_MAX_G400_PIPES ); + } else { + if ( dirty & MGA_UPLOAD_PIPE ) + ret |= ( sarea_priv->warp_pipe > MGA_MAX_G200_PIPES ); + } + + return ( ret == 0 ); +} + +static int mga_verify_iload( drm_mga_private_t *dev_priv, + unsigned int dstorg, unsigned int length ) +{ + if ( dstorg < dev_priv->texture_offset || + dstorg + length > (dev_priv->texture_offset + + dev_priv->texture_size) ) { + DRM_ERROR( "*** bad iload DSTORG: 0x%x\n", dstorg ); + return DRM_ERR(EINVAL); + } + + if ( length & MGA_ILOAD_MASK ) { + DRM_ERROR( "*** bad iload length: 0x%x\n", + length & MGA_ILOAD_MASK ); + return DRM_ERR(EINVAL); + } + + return 0; +} + +static int mga_verify_blit( drm_mga_private_t *dev_priv, + unsigned int srcorg, unsigned int dstorg ) +{ + if ( (srcorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM) || + (dstorg & 0x3) == (MGA_SRCACC_PCI | MGA_SRCMAP_SYSMEM) ) { + DRM_ERROR( "*** bad blit: src=0x%x dst=0x%x\n", + srcorg, dstorg ); + return DRM_ERR(EINVAL); + } + return 0; +} + + +/* ================================================================ + * + */ + +static void mga_dma_dispatch_clear( drm_device_t *dev, + drm_mga_clear_t *clear ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + drm_clip_rect_t *pbox = sarea_priv->boxes; + int nbox = sarea_priv->nbox; + int i; + DMA_LOCALS; + DRM_DEBUG( "\n" ); + + BEGIN_DMA( 1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DWGSYNC, 0x00007100, + MGA_DWGSYNC, 0x00007000 ); + + ADVANCE_DMA(); + + for ( i = 0 ; i < nbox ; i++ ) { + drm_clip_rect_t *box = &pbox[i]; + u32 height = box->y2 - box->y1; + + DRM_DEBUG( " from=%d,%d to=%d,%d\n", + box->x1, box->y1, box->x2, box->y2 ); + + if ( clear->flags & MGA_FRONT ) { + BEGIN_DMA( 2 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_PLNWT, clear->color_mask, + MGA_YDSTLEN, (box->y1 << 16) | height, + MGA_FXBNDRY, (box->x2 << 16) | box->x1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_FCOL, clear->clear_color, + MGA_DSTORG, dev_priv->front_offset, + MGA_DWGCTL + MGA_EXEC, + dev_priv->clear_cmd ); + + ADVANCE_DMA(); + } + + + if ( clear->flags & MGA_BACK ) { + BEGIN_DMA( 2 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_PLNWT, clear->color_mask, + MGA_YDSTLEN, (box->y1 << 16) | height, + MGA_FXBNDRY, (box->x2 << 16) | box->x1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_FCOL, clear->clear_color, + MGA_DSTORG, dev_priv->back_offset, + MGA_DWGCTL + MGA_EXEC, + dev_priv->clear_cmd ); + + ADVANCE_DMA(); + } + + if ( clear->flags & MGA_DEPTH ) { + BEGIN_DMA( 2 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_PLNWT, clear->depth_mask, + MGA_YDSTLEN, (box->y1 << 16) | height, + MGA_FXBNDRY, (box->x2 << 16) | box->x1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_FCOL, clear->clear_depth, + MGA_DSTORG, dev_priv->depth_offset, + MGA_DWGCTL + MGA_EXEC, + dev_priv->clear_cmd ); + + ADVANCE_DMA(); + } + + } + + BEGIN_DMA( 1 ); + + /* Force reset of DWGCTL */ + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_PLNWT, ctx->plnwt, + MGA_DWGCTL, ctx->dwgctl ); + + ADVANCE_DMA(); + + FLUSH_DMA(); +} + +static void mga_dma_dispatch_swap( drm_device_t *dev ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + drm_clip_rect_t *pbox = sarea_priv->boxes; + int nbox = sarea_priv->nbox; + int i; + DMA_LOCALS; + DRM_DEBUG( "\n" ); + + sarea_priv->last_frame.head = dev_priv->prim.tail; + sarea_priv->last_frame.wrap = dev_priv->prim.last_wrap; + + BEGIN_DMA( 4 + nbox ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DWGSYNC, 0x00007100, + MGA_DWGSYNC, 0x00007000 ); + + DMA_BLOCK( MGA_DSTORG, dev_priv->front_offset, + MGA_MACCESS, dev_priv->maccess, + MGA_SRCORG, dev_priv->back_offset, + MGA_AR5, dev_priv->front_pitch ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_PLNWT, 0xffffffff, + MGA_DWGCTL, MGA_DWGCTL_COPY ); + + for ( i = 0 ; i < nbox ; i++ ) { + drm_clip_rect_t *box = &pbox[i]; + u32 height = box->y2 - box->y1; + u32 start = box->y1 * dev_priv->front_pitch; + + DRM_DEBUG( " from=%d,%d to=%d,%d\n", + box->x1, box->y1, box->x2, box->y2 ); + + DMA_BLOCK( MGA_AR0, start + box->x2 - 1, + MGA_AR3, start + box->x1, + MGA_FXBNDRY, ((box->x2 - 1) << 16) | box->x1, + MGA_YDSTLEN + MGA_EXEC, + (box->y1 << 16) | height ); + } + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_PLNWT, ctx->plnwt, + MGA_SRCORG, dev_priv->front_offset, + MGA_DWGCTL, ctx->dwgctl ); + + ADVANCE_DMA(); + + FLUSH_DMA(); + + DRM_DEBUG( "%s... done.\n", __FUNCTION__ ); +} + +static void mga_dma_dispatch_vertex( drm_device_t *dev, drm_buf_t *buf ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_buf_priv_t *buf_priv = buf->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + u32 address = (u32) buf->bus_address; + u32 length = (u32) buf->used; + int i = 0; + DMA_LOCALS; + DRM_DEBUG( "vertex: buf=%d used=%d\n", buf->idx, buf->used ); + + if ( buf->used ) { + buf_priv->dispatched = 1; + + MGA_EMIT_STATE( dev_priv, sarea_priv->dirty ); + + do { + if ( i < sarea_priv->nbox ) { + mga_emit_clip_rect( dev_priv, + &sarea_priv->boxes[i] ); + } + + BEGIN_DMA( 1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_SECADDRESS, (address | + MGA_DMA_VERTEX), + MGA_SECEND, ((address + length) | + MGA_PAGPXFER) ); + + ADVANCE_DMA(); + } while ( ++i < sarea_priv->nbox ); + } + + if ( buf_priv->discard ) { + AGE_BUFFER( buf_priv ); + buf->pending = 0; + buf->used = 0; + buf_priv->dispatched = 0; + + mga_freelist_put( dev, buf ); + } + + FLUSH_DMA(); +} + +static void mga_dma_dispatch_indices( drm_device_t *dev, drm_buf_t *buf, + unsigned int start, unsigned int end ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_buf_priv_t *buf_priv = buf->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + u32 address = (u32) buf->bus_address; + int i = 0; + DMA_LOCALS; + DRM_DEBUG( "indices: buf=%d start=%d end=%d\n", buf->idx, start, end ); + + if ( start != end ) { + buf_priv->dispatched = 1; + + MGA_EMIT_STATE( dev_priv, sarea_priv->dirty ); + + do { + if ( i < sarea_priv->nbox ) { + mga_emit_clip_rect( dev_priv, + &sarea_priv->boxes[i] ); + } + + BEGIN_DMA( 1 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_SETUPADDRESS, address + start, + MGA_SETUPEND, ((address + end) | + MGA_PAGPXFER) ); + + ADVANCE_DMA(); + } while ( ++i < sarea_priv->nbox ); + } + + if ( buf_priv->discard ) { + AGE_BUFFER( buf_priv ); + buf->pending = 0; + buf->used = 0; + buf_priv->dispatched = 0; + + mga_freelist_put( dev, buf ); + } + + FLUSH_DMA(); +} + +/* This copies a 64 byte aligned agp region to the frambuffer with a + * standard blit, the ioctl needs to do checking. + */ +static void mga_dma_dispatch_iload( drm_device_t *dev, drm_buf_t *buf, + unsigned int dstorg, unsigned int length ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_buf_priv_t *buf_priv = buf->dev_private; + drm_mga_context_regs_t *ctx = &dev_priv->sarea_priv->context_state; + u32 srcorg = buf->bus_address | MGA_SRCACC_AGP | MGA_SRCMAP_SYSMEM; + u32 y2; + DMA_LOCALS; + DRM_DEBUG( "buf=%d used=%d\n", buf->idx, buf->used ); + + y2 = length / 64; + + BEGIN_DMA( 5 ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DWGSYNC, 0x00007100, + MGA_DWGSYNC, 0x00007000 ); + + DMA_BLOCK( MGA_DSTORG, dstorg, + MGA_MACCESS, 0x00000000, + MGA_SRCORG, srcorg, + MGA_AR5, 64 ); + + DMA_BLOCK( MGA_PITCH, 64, + MGA_PLNWT, 0xffffffff, + MGA_DMAPAD, 0x00000000, + MGA_DWGCTL, MGA_DWGCTL_COPY ); + + DMA_BLOCK( MGA_AR0, 63, + MGA_AR3, 0, + MGA_FXBNDRY, (63 << 16) | 0, + MGA_YDSTLEN + MGA_EXEC, y2 ); + + DMA_BLOCK( MGA_PLNWT, ctx->plnwt, + MGA_SRCORG, dev_priv->front_offset, + MGA_PITCH, dev_priv->front_pitch, + MGA_DWGSYNC, 0x00007000 ); + + ADVANCE_DMA(); + + AGE_BUFFER( buf_priv ); + + buf->pending = 0; + buf->used = 0; + buf_priv->dispatched = 0; + + mga_freelist_put( dev, buf ); + + FLUSH_DMA(); +} + +static void mga_dma_dispatch_blit( drm_device_t *dev, + drm_mga_blit_t *blit ) +{ + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_context_regs_t *ctx = &sarea_priv->context_state; + drm_clip_rect_t *pbox = sarea_priv->boxes; + int nbox = sarea_priv->nbox; + u32 scandir = 0, i; + DMA_LOCALS; + DRM_DEBUG( "\n" ); + + BEGIN_DMA( 4 + nbox ); + + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_DMAPAD, 0x00000000, + MGA_DWGSYNC, 0x00007100, + MGA_DWGSYNC, 0x00007000 ); + + DMA_BLOCK( MGA_DWGCTL, MGA_DWGCTL_COPY, + MGA_PLNWT, blit->planemask, + MGA_SRCORG, blit->srcorg, + MGA_DSTORG, blit->dstorg ); + + DMA_BLOCK( MGA_SGN, scandir, + MGA_MACCESS, dev_priv->maccess, + MGA_AR5, blit->ydir * blit->src_pitch, + MGA_PITCH, blit->dst_pitch ); + + for ( i = 0 ; i < nbox ; i++ ) { + int srcx = pbox[i].x1 + blit->delta_sx; + int srcy = pbox[i].y1 + blit->delta_sy; + int dstx = pbox[i].x1 + blit->delta_dx; + int dsty = pbox[i].y1 + blit->delta_dy; + int h = pbox[i].y2 - pbox[i].y1; + int w = pbox[i].x2 - pbox[i].x1 - 1; + int start; + + if ( blit->ydir == -1 ) { + srcy = blit->height - srcy - 1; + } + + start = srcy * blit->src_pitch + srcx; + + DMA_BLOCK( MGA_AR0, start + w, + MGA_AR3, start, + MGA_FXBNDRY, ((dstx + w) << 16) | (dstx & 0xffff), + MGA_YDSTLEN + MGA_EXEC, (dsty << 16) | h ); + } + + /* Do something to flush AGP? + */ + + /* Force reset of DWGCTL */ + DMA_BLOCK( MGA_DMAPAD, 0x00000000, + MGA_PLNWT, ctx->plnwt, + MGA_PITCH, dev_priv->front_pitch, + MGA_DWGCTL, ctx->dwgctl ); + + ADVANCE_DMA(); +} + + +/* ================================================================ + * + */ + +static int mga_dma_clear( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_clear_t clear; + + LOCK_TEST_WITH_RETURN( dev, filp ); + + DRM_COPY_FROM_USER_IOCTL( clear, (drm_mga_clear_t __user *)data, sizeof(clear) ); + + if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS ) + sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS; + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_clear( dev, &clear ); + + /* Make sure we restore the 3D state next time. + */ + dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT; + + return 0; +} + +static int mga_dma_swap( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + + LOCK_TEST_WITH_RETURN( dev, filp ); + + if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS ) + sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS; + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_swap( dev ); + + /* Make sure we restore the 3D state next time. + */ + dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT; + + return 0; +} + +static int mga_dma_vertex( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_device_dma_t *dma = dev->dma; + drm_buf_t *buf; + drm_mga_buf_priv_t *buf_priv; + drm_mga_vertex_t vertex; + + LOCK_TEST_WITH_RETURN( dev, filp ); + + DRM_COPY_FROM_USER_IOCTL( vertex, + (drm_mga_vertex_t __user *)data, + sizeof(vertex) ); + + if(vertex.idx < 0 || vertex.idx > dma->buf_count) return DRM_ERR(EINVAL); + buf = dma->buflist[vertex.idx]; + buf_priv = buf->dev_private; + + buf->used = vertex.used; + buf_priv->discard = vertex.discard; + + if ( !mga_verify_state( dev_priv ) ) { + if ( vertex.discard ) { + if ( buf_priv->dispatched == 1 ) + AGE_BUFFER( buf_priv ); + buf_priv->dispatched = 0; + mga_freelist_put( dev, buf ); + } + return DRM_ERR(EINVAL); + } + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_vertex( dev, buf ); + + return 0; +} + +static int mga_dma_indices( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_device_dma_t *dma = dev->dma; + drm_buf_t *buf; + drm_mga_buf_priv_t *buf_priv; + drm_mga_indices_t indices; + + LOCK_TEST_WITH_RETURN( dev, filp ); + + DRM_COPY_FROM_USER_IOCTL( indices, + (drm_mga_indices_t __user *)data, + sizeof(indices) ); + + if(indices.idx < 0 || indices.idx > dma->buf_count) return DRM_ERR(EINVAL); + + buf = dma->buflist[indices.idx]; + buf_priv = buf->dev_private; + + buf_priv->discard = indices.discard; + + if ( !mga_verify_state( dev_priv ) ) { + if ( indices.discard ) { + if ( buf_priv->dispatched == 1 ) + AGE_BUFFER( buf_priv ); + buf_priv->dispatched = 0; + mga_freelist_put( dev, buf ); + } + return DRM_ERR(EINVAL); + } + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_indices( dev, buf, indices.start, indices.end ); + + return 0; +} + +static int mga_dma_iload( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_device_dma_t *dma = dev->dma; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_buf_t *buf; + drm_mga_buf_priv_t *buf_priv; + drm_mga_iload_t iload; + DRM_DEBUG( "\n" ); + + LOCK_TEST_WITH_RETURN( dev, filp ); + + DRM_COPY_FROM_USER_IOCTL( iload, (drm_mga_iload_t __user *)data, sizeof(iload) ); + +#if 0 + if ( mga_do_wait_for_idle( dev_priv ) < 0 ) { + if ( MGA_DMA_DEBUG ) + DRM_INFO( "%s: -EBUSY\n", __FUNCTION__ ); + return DRM_ERR(EBUSY); + } +#endif + if(iload.idx < 0 || iload.idx > dma->buf_count) return DRM_ERR(EINVAL); + + buf = dma->buflist[iload.idx]; + buf_priv = buf->dev_private; + + if ( mga_verify_iload( dev_priv, iload.dstorg, iload.length ) ) { + mga_freelist_put( dev, buf ); + return DRM_ERR(EINVAL); + } + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_iload( dev, buf, iload.dstorg, iload.length ); + + /* Make sure we restore the 3D state next time. + */ + dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT; + + return 0; +} + +static int mga_dma_blit( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mga_blit_t blit; + DRM_DEBUG( "\n" ); + + LOCK_TEST_WITH_RETURN( dev, filp ); + + DRM_COPY_FROM_USER_IOCTL( blit, (drm_mga_blit_t __user *)data, sizeof(blit) ); + + if ( sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS ) + sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS; + + if ( mga_verify_blit( dev_priv, blit.srcorg, blit.dstorg ) ) + return DRM_ERR(EINVAL); + + WRAP_TEST_WITH_RETURN( dev_priv ); + + mga_dma_dispatch_blit( dev, &blit ); + + /* Make sure we restore the 3D state next time. + */ + dev_priv->sarea_priv->dirty |= MGA_UPLOAD_CONTEXT; + + return 0; +} + +static int mga_getparam( DRM_IOCTL_ARGS ) +{ + DRM_DEVICE; + drm_mga_private_t *dev_priv = dev->dev_private; + drm_mga_getparam_t param; + int value; + + if ( !dev_priv ) { + DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ ); + return DRM_ERR(EINVAL); + } + + DRM_COPY_FROM_USER_IOCTL( param, (drm_mga_getparam_t __user *)data, + sizeof(param) ); + + DRM_DEBUG( "pid=%d\n", DRM_CURRENTPID ); + + switch( param.param ) { + case MGA_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; +} + +drm_ioctl_desc_t mga_ioctls[] = { + [DRM_IOCTL_NR(DRM_MGA_INIT)] = { mga_dma_init, 1, 1 }, + [DRM_IOCTL_NR(DRM_MGA_FLUSH)] = { mga_dma_flush, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_RESET)] = { mga_dma_reset, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_SWAP)] = { mga_dma_swap, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_CLEAR)] = { mga_dma_clear, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_VERTEX)] = { mga_dma_vertex, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_INDICES)] = { mga_dma_indices, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_ILOAD)] = { mga_dma_iload, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_BLIT)] = { mga_dma_blit, 1, 0 }, + [DRM_IOCTL_NR(DRM_MGA_GETPARAM)]= { mga_getparam, 1, 0 }, +}; + +int mga_max_ioctl = DRM_ARRAY_SIZE(mga_ioctls); |
