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-rw-r--r--sound/pci/cs46xx/imgs/cwcdma.asp170
1 files changed, 0 insertions, 170 deletions
diff --git a/sound/pci/cs46xx/imgs/cwcdma.asp b/sound/pci/cs46xx/imgs/cwcdma.asp
deleted file mode 100644
index a65e1193c89a..000000000000
--- a/sound/pci/cs46xx/imgs/cwcdma.asp
+++ /dev/null
@@ -1,170 +0,0 @@
-//
-// Copyright(c) by Benny Sjostrand (benny@hostmobility.com)
-//
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-
-
-//
-// This code runs inside the DSP (cs4610, cs4612, cs4624, or cs4630),
-// to compile it you need a tool named SPASM 3.0 and DSP code owned by
-// Cirrus Logic(R). The SPASM program will generate a object file (cwcdma.osp),
-// the "ospparser" tool will genereate the cwcdma.h file it's included from
-// the cs46xx_lib.c file.
-//
-//
-// The purpose of this code is very simple: make it possible to tranfser
-// the samples 'as they are' with no alteration from a PCMreader
-// SCB (DMA from host) to any other SCB. This is useful for AC3 through SPDIF.
-// SRC (source rate converters) task always alters the samples in somehow,
-// however it's from 48khz -> 48khz.
-// The alterations are not audible, but AC3 wont work.
-//
-// ...
-// |
-// +---------------+
-// | AsynchFGTxSCB |
-// +---------------+
-// |
-// subListPtr
-// |
-// +--------------+
-// | DMAReader |
-// +--------------+
-// |
-// subListPtr
-// |
-// +-------------+
-// | PCMReader |
-// +-------------+
-// (DMA from host)
-//
-
-struct dmaSCB
- {
- long dma_reserved1[3];
-
- short dma_reserved2:dma_outBufPtr;
-
- short dma_unused1:dma_unused2;
-
- long dma_reserved3[4];
-
- short dma_subListPtr:dma_nextSCB;
- short dma_SPBptr:dma_entryPoint;
-
- long dma_strmRsConfig;
- long dma_strmBufPtr;
-
- long dma_reserved4;
-
- VolumeControl s2m_volume;
- };
-
-#export DMAReader
-void DMAReader()
-{
- execChild();
- r2 = r0->dma_subListPtr;
- r1 = r0->nextSCB;
-
- rsConfig01 = r2->strmRsConfig;
- // Load rsConfig for input buffer
-
- rsDMA01 = r2->basicReq.daw, , tb = Z(0 - rf);
- // Load rsDMA in case input buffer is a DMA buffer Test to see if there is any data to transfer
-
- if (tb) goto execSibling_2ind1 after {
- r5 = rf + (-1);
- r6 = r1->dma_entryPoint; // r6 = entry point of sibling task
- r1 = r1->dma_SPBptr, // r1 = pointer to sibling task's SPB
- , ind = r6; // Load entry point of sibling task
- }
-
- rsConfig23 = r0->dma_strmRsConfig;
- // Load rsConfig for output buffer (never a DMA buffer)
-
- r4 = r0->dma_outBufPtr;
-
- rsa0 = r2->strmBufPtr;
- // rsa0 = input buffer pointer
-
- for (i = r5; i >= 0; --i)
- after {
- rsa2 = r4;
- // rsa2 = output buffer pointer
-
- nop;
- nop;
- }
- //*****************************
- // TODO: cycles to this point *
- //*****************************
- {
- acc0 = (rsd0 = *rsa0++1);
- // get sample
-
- nop; // Those "nop"'s are really uggly, but there's
- nop; // something with DSP's pipelines which I don't
- nop; // understand, resulting this code to fail without
- // having those "nop"'s (Benny)
-
- rsa0?reqDMA = r2;
- // Trigger DMA transfer on input stream,
- // if needed to replenish input buffer
-
- nop;
- // Yet another magic "nop" to make stuff work
-
- ,,r98 = acc0 $+>> 0;
- // store sample in ALU
-
- nop;
- // latency on load register.
- // (this one is understandable)
-
- *rsa2++1 = r98;
- // store sample in output buffer
-
- nop; // The same story
- nop; // as above again ...
- nop;
- }
- // TODO: cycles per loop iteration
-
- r2->strmBufPtr = rsa0,, ;
- // Update the modified buffer pointers
-
- r4 = rsa2;
- // Load output pointer position into r4
-
- r2 = r0->nextSCB;
- // Sibling task
-
- goto execSibling_2ind1 // takes 6 cycles
- after {
- r98 = r2->thisSPB:entryPoint;
- // Load child routine entry and data address
-
- r1 = r9;
- // r9 is r2->thisSPB
-
- r0->dma_outBufPtr = r4,,
- // Store updated output buffer pointer
-
- ind = r8;
- // r8 is r2->entryPoint
- }
-}