1 /* $Id: //depot/dev/Foxhill/Xtensa/OS/include/xtensa/mpuasm.h#5 $ */ 2 3 /* 4 * Copyright (c) 2016 Cadence Design Systems, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining 7 * a copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sublicense, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 21 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 26 #ifndef _IDMAASM_H_ 27 #define _IDMAASM_H_ 28 29 #if XCHAL_HAVE_IDMA 30 #include <xtensa/idma.h> 31 #endif 32 33 /* 34 * Macro for restore IDMA regs 35 * 36 * Parameters: 37 * a_save => address register containing pointer to IDMA save area 38 * a_temp1, a_temp2, a_temp3. => address register temporaries 39 */ 40 // IDMA_REG_SETTINGS, 41 // IDMA_REG_TIMEOUT, 42 // IDMA_REG_DESC_START, 43 // IDMA_REG_CONTROL, 44 // IDMA_REG_USERPRIV, 45 46 .macro _idma_restore a_save, a_temp1, a_temp2, a_temp3 47 #if XCHAL_HAVE_IDMA 48 l32i \a_temp1, \a_save, 0 49 movi \a_temp3, idmareg_base 50 movi \a_temp2, IDMA_REG_SETTINGS 51 add \a_temp2, \a_temp2, \a_temp3 52 wer \a_temp1, \a_temp2 53 l32i \a_temp1, \a_save, 4 54 movi \a_temp2, IDMA_REG_TIMEOUT 55 add \a_temp2, \a_temp2, \a_temp3 56 wer \a_temp1, \a_temp2 57 l32i \a_temp1, \a_save, 8 58 movi \a_temp2, IDMA_REG_DESC_START 59 add \a_temp2, \a_temp2, \a_temp3 60 wer \a_temp1, \a_temp2 61 l32i \a_temp1, \a_save, 12 62 movi \a_temp2, IDMA_REG_CONTROL 63 add \a_temp2, \a_temp2, \a_temp3 64 wer \a_temp1, \a_temp2 65 l32i \a_temp1, \a_save, 16 66 movi \a_temp2, IDMA_REG_USERPRIV 67 add \a_temp2, \a_temp2, \a_temp3 68 wer \a_temp1, \a_temp2 69 #endif 70 .endm 71 72 #endif //_IDMAASM_H_ 73
