1 /* 2 * Copyright (c) 2018 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 #ifndef _WBM_BUFFER_RING_H_ 19 #define _WBM_BUFFER_RING_H_ 20 #if !defined(__ASSEMBLER__) 21 #endif 22 23 #include "buffer_addr_info.h" 24 25 // ################ START SUMMARY ################# 26 // 27 // Dword Fields 28 // 0-1 struct buffer_addr_info buf_addr_info; 29 // 30 // ################ END SUMMARY ################# 31 32 #define NUM_OF_DWORDS_WBM_BUFFER_RING 2 33 34 struct wbm_buffer_ring { 35 struct buffer_addr_info buf_addr_info; 36 }; 37 38 /* 39 40 struct buffer_addr_info buf_addr_info 41 42 Consumer: WBM 43 44 Producer: WBM 45 46 47 48 Details of the physical address of the buffer + source 49 buffer owner + some SW meta data. 50 51 All modules getting this buffer address info, shall keep 52 all the 64 bits of info in this descriptor together and 53 eventually all 64 bits shall be given back to WMB when the 54 buffer is released. 55 */ 56 57 #define WBM_BUFFER_RING_0_BUFFER_ADDR_INFO_BUF_ADDR_INFO_OFFSET 0x00000000 58 #define WBM_BUFFER_RING_0_BUFFER_ADDR_INFO_BUF_ADDR_INFO_LSB 0 59 #define WBM_BUFFER_RING_0_BUFFER_ADDR_INFO_BUF_ADDR_INFO_MASK 0xffffffff 60 #define WBM_BUFFER_RING_1_BUFFER_ADDR_INFO_BUF_ADDR_INFO_OFFSET 0x00000004 61 #define WBM_BUFFER_RING_1_BUFFER_ADDR_INFO_BUF_ADDR_INFO_LSB 0 62 #define WBM_BUFFER_RING_1_BUFFER_ADDR_INFO_BUF_ADDR_INFO_MASK 0xffffffff 63 64 65 #endif // _WBM_BUFFER_RING_H_ 66