| /* $Id: //depot/dev/Foxhill/Xtensa/OS/include/xtensa/mpuasm.h#5 $ */ |
| |
| /* |
| * Copyright (c) 2016 Cadence Design Systems, Inc. |
| * |
| * 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 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 AUTHORS OR COPYRIGHT HOLDERS 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. |
| */ |
| |
| #ifndef _IDMAASM_H_ |
| #define _IDMAASM_H_ |
| |
| #if XCHAL_HAVE_IDMA |
| #include <xtensa/idma.h> |
| #endif |
| |
| /* |
| * Macro for restore IDMA regs |
| * |
| * Parameters: |
| * a_save => address register containing pointer to IDMA save area |
| * a_temp1, a_temp2, a_temp3. => address register temporaries |
| */ |
| // IDMA_REG_SETTINGS, |
| // IDMA_REG_TIMEOUT, |
| // IDMA_REG_DESC_START, |
| // IDMA_REG_CONTROL, |
| // IDMA_REG_USERPRIV, |
| |
| .macro _idma_restore a_save, a_temp1, a_temp2, a_temp3 |
| #if XCHAL_HAVE_IDMA |
| l32i \a_temp1, \a_save, 0 |
| movi \a_temp3, idmareg_base |
| movi \a_temp2, IDMA_REG_SETTINGS |
| add \a_temp2, \a_temp2, \a_temp3 |
| wer \a_temp1, \a_temp2 |
| l32i \a_temp1, \a_save, 4 |
| movi \a_temp2, IDMA_REG_TIMEOUT |
| add \a_temp2, \a_temp2, \a_temp3 |
| wer \a_temp1, \a_temp2 |
| l32i \a_temp1, \a_save, 8 |
| movi \a_temp2, IDMA_REG_DESC_START |
| add \a_temp2, \a_temp2, \a_temp3 |
| wer \a_temp1, \a_temp2 |
| l32i \a_temp1, \a_save, 12 |
| movi \a_temp2, IDMA_REG_CONTROL |
| add \a_temp2, \a_temp2, \a_temp3 |
| wer \a_temp1, \a_temp2 |
| l32i \a_temp1, \a_save, 16 |
| movi \a_temp2, IDMA_REG_USERPRIV |
| add \a_temp2, \a_temp2, \a_temp3 |
| wer \a_temp1, \a_temp2 |
| #endif |
| .endm |
| |
| #endif //_IDMAASM_H_ |
