1*5113495bSYour Name /* 2*5113495bSYour Name * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved. 3*5113495bSYour Name * 4*5113495bSYour Name * Permission to use, copy, modify, and/or distribute this software for 5*5113495bSYour Name * any purpose with or without fee is hereby granted, provided that the 6*5113495bSYour Name * above copyright notice and this permission notice appear in all 7*5113495bSYour Name * copies. 8*5113495bSYour Name * 9*5113495bSYour Name * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10*5113495bSYour Name * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11*5113495bSYour Name * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12*5113495bSYour Name * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13*5113495bSYour Name * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14*5113495bSYour Name * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15*5113495bSYour Name * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16*5113495bSYour Name * PERFORMANCE OF THIS SOFTWARE. 17*5113495bSYour Name */ 18*5113495bSYour Name 19*5113495bSYour Name #ifndef _TCL_STATUS_RING_H_ 20*5113495bSYour Name #define _TCL_STATUS_RING_H_ 21*5113495bSYour Name #if !defined(__ASSEMBLER__) 22*5113495bSYour Name #endif 23*5113495bSYour Name 24*5113495bSYour Name 25*5113495bSYour Name // ################ START SUMMARY ################# 26*5113495bSYour Name // 27*5113495bSYour Name // Dword Fields 28*5113495bSYour Name // 0 gse_ctrl[3:0], ase_fse_sel[4], cache_op_res[6:5], index_search_en[7], msdu_cnt_n[31:8] 29*5113495bSYour Name // 1 msdu_byte_cnt_n[31:0] 30*5113495bSYour Name // 2 msdu_timestmp_n[31:0] 31*5113495bSYour Name // 3 cmd_meta_data_31_0[31:0] 32*5113495bSYour Name // 4 cmd_meta_data_63_32[31:0] 33*5113495bSYour Name // 5 hash_indx_val[19:0], cache_set_num[23:20], reserved_5a[31:24] 34*5113495bSYour Name // 6 reserved_6a[31:0] 35*5113495bSYour Name // 7 reserved_7a[19:0], ring_id[27:20], looping_count[31:28] 36*5113495bSYour Name // 37*5113495bSYour Name // ################ END SUMMARY ################# 38*5113495bSYour Name 39*5113495bSYour Name #define NUM_OF_DWORDS_TCL_STATUS_RING 8 40*5113495bSYour Name 41*5113495bSYour Name struct tcl_status_ring { 42*5113495bSYour Name uint32_t gse_ctrl : 4, //[3:0] 43*5113495bSYour Name ase_fse_sel : 1, //[4] 44*5113495bSYour Name cache_op_res : 2, //[6:5] 45*5113495bSYour Name index_search_en : 1, //[7] 46*5113495bSYour Name msdu_cnt_n : 24; //[31:8] 47*5113495bSYour Name uint32_t msdu_byte_cnt_n : 32; //[31:0] 48*5113495bSYour Name uint32_t msdu_timestmp_n : 32; //[31:0] 49*5113495bSYour Name uint32_t cmd_meta_data_31_0 : 32; //[31:0] 50*5113495bSYour Name uint32_t cmd_meta_data_63_32 : 32; //[31:0] 51*5113495bSYour Name uint32_t hash_indx_val : 20, //[19:0] 52*5113495bSYour Name cache_set_num : 4, //[23:20] 53*5113495bSYour Name reserved_5a : 8; //[31:24] 54*5113495bSYour Name uint32_t reserved_6a : 32; //[31:0] 55*5113495bSYour Name uint32_t reserved_7a : 20, //[19:0] 56*5113495bSYour Name ring_id : 8, //[27:20] 57*5113495bSYour Name looping_count : 4; //[31:28] 58*5113495bSYour Name }; 59*5113495bSYour Name 60*5113495bSYour Name /* 61*5113495bSYour Name 62*5113495bSYour Name gse_ctrl 63*5113495bSYour Name 64*5113495bSYour Name GSE control operations. This includes cache operations 65*5113495bSYour Name and table entry statistics read/clear operation. 66*5113495bSYour Name 67*5113495bSYour Name <enum 0 rd_stat> Report or Read statistics 68*5113495bSYour Name 69*5113495bSYour Name <enum 1 srch_dis> Search disable. Report only Hash 70*5113495bSYour Name 71*5113495bSYour Name <enum 2 Wr_bk_single> Write Back single entry 72*5113495bSYour Name 73*5113495bSYour Name <enum 3 wr_bk_all> Write Back entire cache entry 74*5113495bSYour Name 75*5113495bSYour Name <enum 4 inval_single> Invalidate single cache entry 76*5113495bSYour Name 77*5113495bSYour Name <enum 5 inval_all> Invalidate entire cache 78*5113495bSYour Name 79*5113495bSYour Name <enum 6 wr_bk_inval_single> Write back and Invalidate 80*5113495bSYour Name single entry in cache 81*5113495bSYour Name 82*5113495bSYour Name <enum 7 wr_bk_inval_all> write back and invalidate 83*5113495bSYour Name entire cache 84*5113495bSYour Name 85*5113495bSYour Name <enum 8 clr_stat_single> Clear statistics for single 86*5113495bSYour Name entry 87*5113495bSYour Name 88*5113495bSYour Name <legal 0-8> 89*5113495bSYour Name 90*5113495bSYour Name Rest of the values reserved. 91*5113495bSYour Name 92*5113495bSYour Name For all single entry control operations (write back, 93*5113495bSYour Name Invalidate or both)Statistics will be reported 94*5113495bSYour Name 95*5113495bSYour Name ase_fse_sel 96*5113495bSYour Name 97*5113495bSYour Name Search Engine for which operation is done. 98*5113495bSYour Name 99*5113495bSYour Name 1'b0: Address Search Engine Result 100*5113495bSYour Name 101*5113495bSYour Name 1'b1: Flow Search Engine result 102*5113495bSYour Name 103*5113495bSYour Name cache_op_res 104*5113495bSYour Name 105*5113495bSYour Name Cache operation result. Following are results of cache 106*5113495bSYour Name operation. 107*5113495bSYour Name 108*5113495bSYour Name <enum 0 op_done> Operation successful 109*5113495bSYour Name 110*5113495bSYour Name <enum 1 not_fnd> Entry not found in Table 111*5113495bSYour Name 112*5113495bSYour Name <enum 2 timeout_er> Timeout Error 113*5113495bSYour Name 114*5113495bSYour Name <legal 0-2> 115*5113495bSYour Name 116*5113495bSYour Name index_search_en 117*5113495bSYour Name 118*5113495bSYour Name When this bit is set to 1 control_buffer_addr[19:0] will 119*5113495bSYour Name be considered as index of the AST or Flow table and GSE 120*5113495bSYour Name commands will be executed accordingly on the entry pointed 121*5113495bSYour Name by the index. 122*5113495bSYour Name 123*5113495bSYour Name This feature is disabled by setting this bit to 0. 124*5113495bSYour Name 125*5113495bSYour Name <enum 0 index_based_cmd_disable> 126*5113495bSYour Name 127*5113495bSYour Name <enum 1 index_based_cmd_enable> 128*5113495bSYour Name 129*5113495bSYour Name 130*5113495bSYour Name 131*5113495bSYour Name <legal all> 132*5113495bSYour Name 133*5113495bSYour Name msdu_cnt_n 134*5113495bSYour Name 135*5113495bSYour Name MSDU count of Entry. Valid when GSE_CTRL is 4'b0111 and 136*5113495bSYour Name 4'b1000 137*5113495bSYour Name 138*5113495bSYour Name msdu_byte_cnt_n 139*5113495bSYour Name 140*5113495bSYour Name MSDU byte count for entry 1. Valid when GSE_CTRL is 141*5113495bSYour Name 4'b0111 and 4'b1000 142*5113495bSYour Name 143*5113495bSYour Name msdu_timestmp_n 144*5113495bSYour Name 145*5113495bSYour Name MSDU timestamp for entry 1. Valid when GSE_CTRL is 146*5113495bSYour Name 4'b0111 and 4'b1000 147*5113495bSYour Name 148*5113495bSYour Name cmd_meta_data_31_0 149*5113495bSYour Name 150*5113495bSYour Name Meta data from input ring 151*5113495bSYour Name 152*5113495bSYour Name <legal all> 153*5113495bSYour Name 154*5113495bSYour Name cmd_meta_data_63_32 155*5113495bSYour Name 156*5113495bSYour Name Meta data from input ring 157*5113495bSYour Name 158*5113495bSYour Name <legal all> 159*5113495bSYour Name 160*5113495bSYour Name hash_indx_val 161*5113495bSYour Name 162*5113495bSYour Name 163*5113495bSYour Name Hash value of the entry in table in case of search 164*5113495bSYour Name failed or search disable. 165*5113495bSYour Name 166*5113495bSYour Name <legal all> 167*5113495bSYour Name 168*5113495bSYour Name cache_set_num 169*5113495bSYour Name 170*5113495bSYour Name Cache set number copied from TCL_GSE_CMD 171*5113495bSYour Name 172*5113495bSYour Name reserved_5a 173*5113495bSYour Name 174*5113495bSYour Name <legal 0> 175*5113495bSYour Name 176*5113495bSYour Name reserved_6a 177*5113495bSYour Name 178*5113495bSYour Name <legal 0> 179*5113495bSYour Name 180*5113495bSYour Name reserved_7a 181*5113495bSYour Name 182*5113495bSYour Name <legal 0> 183*5113495bSYour Name 184*5113495bSYour Name ring_id 185*5113495bSYour Name 186*5113495bSYour Name The buffer pointer ring ID. 187*5113495bSYour Name 188*5113495bSYour Name 189*5113495bSYour Name 190*5113495bSYour Name Helps with debugging when dumping ring contents. 191*5113495bSYour Name 192*5113495bSYour Name <legal all> 193*5113495bSYour Name 194*5113495bSYour Name looping_count 195*5113495bSYour Name 196*5113495bSYour Name A count value that indicates the number of times the 197*5113495bSYour Name producer of entries into the Ring has looped around the 198*5113495bSYour Name ring. 199*5113495bSYour Name 200*5113495bSYour Name At initialization time, this value is set to 0. On the 201*5113495bSYour Name first loop, this value is set to 1. After the max value is 202*5113495bSYour Name reached allowed by the number of bits for this field, the 203*5113495bSYour Name count value continues with 0 again. 204*5113495bSYour Name 205*5113495bSYour Name 206*5113495bSYour Name 207*5113495bSYour Name In case SW is the consumer of the ring entries, it can 208*5113495bSYour Name use this field to figure out up to where the producer of 209*5113495bSYour Name entries has created new entries. This eliminates the need to 210*5113495bSYour Name check where the head pointer' of the ring is located once 211*5113495bSYour Name the SW starts processing an interrupt indicating that new 212*5113495bSYour Name entries have been put into this ring... 213*5113495bSYour Name 214*5113495bSYour Name 215*5113495bSYour Name 216*5113495bSYour Name Also note that SW if it wants only needs to look at the 217*5113495bSYour Name LSB bit of this count value. 218*5113495bSYour Name 219*5113495bSYour Name <legal all> 220*5113495bSYour Name */ 221*5113495bSYour Name 222*5113495bSYour Name 223*5113495bSYour Name /* Description TCL_STATUS_RING_0_GSE_CTRL 224*5113495bSYour Name 225*5113495bSYour Name GSE control operations. This includes cache operations 226*5113495bSYour Name and table entry statistics read/clear operation. 227*5113495bSYour Name 228*5113495bSYour Name <enum 0 rd_stat> Report or Read statistics 229*5113495bSYour Name 230*5113495bSYour Name <enum 1 srch_dis> Search disable. Report only Hash 231*5113495bSYour Name 232*5113495bSYour Name <enum 2 Wr_bk_single> Write Back single entry 233*5113495bSYour Name 234*5113495bSYour Name <enum 3 wr_bk_all> Write Back entire cache entry 235*5113495bSYour Name 236*5113495bSYour Name <enum 4 inval_single> Invalidate single cache entry 237*5113495bSYour Name 238*5113495bSYour Name <enum 5 inval_all> Invalidate entire cache 239*5113495bSYour Name 240*5113495bSYour Name <enum 6 wr_bk_inval_single> Write back and Invalidate 241*5113495bSYour Name single entry in cache 242*5113495bSYour Name 243*5113495bSYour Name <enum 7 wr_bk_inval_all> write back and invalidate 244*5113495bSYour Name entire cache 245*5113495bSYour Name 246*5113495bSYour Name <enum 8 clr_stat_single> Clear statistics for single 247*5113495bSYour Name entry 248*5113495bSYour Name 249*5113495bSYour Name <legal 0-8> 250*5113495bSYour Name 251*5113495bSYour Name Rest of the values reserved. 252*5113495bSYour Name 253*5113495bSYour Name For all single entry control operations (write back, 254*5113495bSYour Name Invalidate or both)Statistics will be reported 255*5113495bSYour Name */ 256*5113495bSYour Name #define TCL_STATUS_RING_0_GSE_CTRL_OFFSET 0x00000000 257*5113495bSYour Name #define TCL_STATUS_RING_0_GSE_CTRL_LSB 0 258*5113495bSYour Name #define TCL_STATUS_RING_0_GSE_CTRL_MASK 0x0000000f 259*5113495bSYour Name 260*5113495bSYour Name /* Description TCL_STATUS_RING_0_ASE_FSE_SEL 261*5113495bSYour Name 262*5113495bSYour Name Search Engine for which operation is done. 263*5113495bSYour Name 264*5113495bSYour Name 1'b0: Address Search Engine Result 265*5113495bSYour Name 266*5113495bSYour Name 1'b1: Flow Search Engine result 267*5113495bSYour Name */ 268*5113495bSYour Name #define TCL_STATUS_RING_0_ASE_FSE_SEL_OFFSET 0x00000000 269*5113495bSYour Name #define TCL_STATUS_RING_0_ASE_FSE_SEL_LSB 4 270*5113495bSYour Name #define TCL_STATUS_RING_0_ASE_FSE_SEL_MASK 0x00000010 271*5113495bSYour Name 272*5113495bSYour Name /* Description TCL_STATUS_RING_0_CACHE_OP_RES 273*5113495bSYour Name 274*5113495bSYour Name Cache operation result. Following are results of cache 275*5113495bSYour Name operation. 276*5113495bSYour Name 277*5113495bSYour Name <enum 0 op_done> Operation successful 278*5113495bSYour Name 279*5113495bSYour Name <enum 1 not_fnd> Entry not found in Table 280*5113495bSYour Name 281*5113495bSYour Name <enum 2 timeout_er> Timeout Error 282*5113495bSYour Name 283*5113495bSYour Name <legal 0-2> 284*5113495bSYour Name */ 285*5113495bSYour Name #define TCL_STATUS_RING_0_CACHE_OP_RES_OFFSET 0x00000000 286*5113495bSYour Name #define TCL_STATUS_RING_0_CACHE_OP_RES_LSB 5 287*5113495bSYour Name #define TCL_STATUS_RING_0_CACHE_OP_RES_MASK 0x00000060 288*5113495bSYour Name 289*5113495bSYour Name /* Description TCL_STATUS_RING_0_INDEX_SEARCH_EN 290*5113495bSYour Name 291*5113495bSYour Name When this bit is set to 1 control_buffer_addr[19:0] will 292*5113495bSYour Name be considered as index of the AST or Flow table and GSE 293*5113495bSYour Name commands will be executed accordingly on the entry pointed 294*5113495bSYour Name by the index. 295*5113495bSYour Name 296*5113495bSYour Name This feature is disabled by setting this bit to 0. 297*5113495bSYour Name 298*5113495bSYour Name <enum 0 index_based_cmd_disable> 299*5113495bSYour Name 300*5113495bSYour Name <enum 1 index_based_cmd_enable> 301*5113495bSYour Name 302*5113495bSYour Name 303*5113495bSYour Name 304*5113495bSYour Name <legal all> 305*5113495bSYour Name */ 306*5113495bSYour Name #define TCL_STATUS_RING_0_INDEX_SEARCH_EN_OFFSET 0x00000000 307*5113495bSYour Name #define TCL_STATUS_RING_0_INDEX_SEARCH_EN_LSB 7 308*5113495bSYour Name #define TCL_STATUS_RING_0_INDEX_SEARCH_EN_MASK 0x00000080 309*5113495bSYour Name 310*5113495bSYour Name /* Description TCL_STATUS_RING_0_MSDU_CNT_N 311*5113495bSYour Name 312*5113495bSYour Name MSDU count of Entry. Valid when GSE_CTRL is 4'b0111 and 313*5113495bSYour Name 4'b1000 314*5113495bSYour Name */ 315*5113495bSYour Name #define TCL_STATUS_RING_0_MSDU_CNT_N_OFFSET 0x00000000 316*5113495bSYour Name #define TCL_STATUS_RING_0_MSDU_CNT_N_LSB 8 317*5113495bSYour Name #define TCL_STATUS_RING_0_MSDU_CNT_N_MASK 0xffffff00 318*5113495bSYour Name 319*5113495bSYour Name /* Description TCL_STATUS_RING_1_MSDU_BYTE_CNT_N 320*5113495bSYour Name 321*5113495bSYour Name MSDU byte count for entry 1. Valid when GSE_CTRL is 322*5113495bSYour Name 4'b0111 and 4'b1000 323*5113495bSYour Name */ 324*5113495bSYour Name #define TCL_STATUS_RING_1_MSDU_BYTE_CNT_N_OFFSET 0x00000004 325*5113495bSYour Name #define TCL_STATUS_RING_1_MSDU_BYTE_CNT_N_LSB 0 326*5113495bSYour Name #define TCL_STATUS_RING_1_MSDU_BYTE_CNT_N_MASK 0xffffffff 327*5113495bSYour Name 328*5113495bSYour Name /* Description TCL_STATUS_RING_2_MSDU_TIMESTMP_N 329*5113495bSYour Name 330*5113495bSYour Name MSDU timestamp for entry 1. Valid when GSE_CTRL is 331*5113495bSYour Name 4'b0111 and 4'b1000 332*5113495bSYour Name */ 333*5113495bSYour Name #define TCL_STATUS_RING_2_MSDU_TIMESTMP_N_OFFSET 0x00000008 334*5113495bSYour Name #define TCL_STATUS_RING_2_MSDU_TIMESTMP_N_LSB 0 335*5113495bSYour Name #define TCL_STATUS_RING_2_MSDU_TIMESTMP_N_MASK 0xffffffff 336*5113495bSYour Name 337*5113495bSYour Name /* Description TCL_STATUS_RING_3_CMD_META_DATA_31_0 338*5113495bSYour Name 339*5113495bSYour Name Meta data from input ring 340*5113495bSYour Name 341*5113495bSYour Name <legal all> 342*5113495bSYour Name */ 343*5113495bSYour Name #define TCL_STATUS_RING_3_CMD_META_DATA_31_0_OFFSET 0x0000000c 344*5113495bSYour Name #define TCL_STATUS_RING_3_CMD_META_DATA_31_0_LSB 0 345*5113495bSYour Name #define TCL_STATUS_RING_3_CMD_META_DATA_31_0_MASK 0xffffffff 346*5113495bSYour Name 347*5113495bSYour Name /* Description TCL_STATUS_RING_4_CMD_META_DATA_63_32 348*5113495bSYour Name 349*5113495bSYour Name Meta data from input ring 350*5113495bSYour Name 351*5113495bSYour Name <legal all> 352*5113495bSYour Name */ 353*5113495bSYour Name #define TCL_STATUS_RING_4_CMD_META_DATA_63_32_OFFSET 0x00000010 354*5113495bSYour Name #define TCL_STATUS_RING_4_CMD_META_DATA_63_32_LSB 0 355*5113495bSYour Name #define TCL_STATUS_RING_4_CMD_META_DATA_63_32_MASK 0xffffffff 356*5113495bSYour Name 357*5113495bSYour Name /* Description TCL_STATUS_RING_5_HASH_INDX_VAL 358*5113495bSYour Name 359*5113495bSYour Name 360*5113495bSYour Name Hash value of the entry in table in case of search 361*5113495bSYour Name failed or search disable. 362*5113495bSYour Name 363*5113495bSYour Name <legal all> 364*5113495bSYour Name */ 365*5113495bSYour Name #define TCL_STATUS_RING_5_HASH_INDX_VAL_OFFSET 0x00000014 366*5113495bSYour Name #define TCL_STATUS_RING_5_HASH_INDX_VAL_LSB 0 367*5113495bSYour Name #define TCL_STATUS_RING_5_HASH_INDX_VAL_MASK 0x000fffff 368*5113495bSYour Name 369*5113495bSYour Name /* Description TCL_STATUS_RING_5_CACHE_SET_NUM 370*5113495bSYour Name 371*5113495bSYour Name Cache set number copied from TCL_GSE_CMD 372*5113495bSYour Name */ 373*5113495bSYour Name #define TCL_STATUS_RING_5_CACHE_SET_NUM_OFFSET 0x00000014 374*5113495bSYour Name #define TCL_STATUS_RING_5_CACHE_SET_NUM_LSB 20 375*5113495bSYour Name #define TCL_STATUS_RING_5_CACHE_SET_NUM_MASK 0x00f00000 376*5113495bSYour Name 377*5113495bSYour Name /* Description TCL_STATUS_RING_5_RESERVED_5A 378*5113495bSYour Name 379*5113495bSYour Name <legal 0> 380*5113495bSYour Name */ 381*5113495bSYour Name #define TCL_STATUS_RING_5_RESERVED_5A_OFFSET 0x00000014 382*5113495bSYour Name #define TCL_STATUS_RING_5_RESERVED_5A_LSB 24 383*5113495bSYour Name #define TCL_STATUS_RING_5_RESERVED_5A_MASK 0xff000000 384*5113495bSYour Name 385*5113495bSYour Name /* Description TCL_STATUS_RING_6_RESERVED_6A 386*5113495bSYour Name 387*5113495bSYour Name <legal 0> 388*5113495bSYour Name */ 389*5113495bSYour Name #define TCL_STATUS_RING_6_RESERVED_6A_OFFSET 0x00000018 390*5113495bSYour Name #define TCL_STATUS_RING_6_RESERVED_6A_LSB 0 391*5113495bSYour Name #define TCL_STATUS_RING_6_RESERVED_6A_MASK 0xffffffff 392*5113495bSYour Name 393*5113495bSYour Name /* Description TCL_STATUS_RING_7_RESERVED_7A 394*5113495bSYour Name 395*5113495bSYour Name <legal 0> 396*5113495bSYour Name */ 397*5113495bSYour Name #define TCL_STATUS_RING_7_RESERVED_7A_OFFSET 0x0000001c 398*5113495bSYour Name #define TCL_STATUS_RING_7_RESERVED_7A_LSB 0 399*5113495bSYour Name #define TCL_STATUS_RING_7_RESERVED_7A_MASK 0x000fffff 400*5113495bSYour Name 401*5113495bSYour Name /* Description TCL_STATUS_RING_7_RING_ID 402*5113495bSYour Name 403*5113495bSYour Name The buffer pointer ring ID. 404*5113495bSYour Name 405*5113495bSYour Name 406*5113495bSYour Name 407*5113495bSYour Name Helps with debugging when dumping ring contents. 408*5113495bSYour Name 409*5113495bSYour Name <legal all> 410*5113495bSYour Name */ 411*5113495bSYour Name #define TCL_STATUS_RING_7_RING_ID_OFFSET 0x0000001c 412*5113495bSYour Name #define TCL_STATUS_RING_7_RING_ID_LSB 20 413*5113495bSYour Name #define TCL_STATUS_RING_7_RING_ID_MASK 0x0ff00000 414*5113495bSYour Name 415*5113495bSYour Name /* Description TCL_STATUS_RING_7_LOOPING_COUNT 416*5113495bSYour Name 417*5113495bSYour Name A count value that indicates the number of times the 418*5113495bSYour Name producer of entries into the Ring has looped around the 419*5113495bSYour Name ring. 420*5113495bSYour Name 421*5113495bSYour Name At initialization time, this value is set to 0. On the 422*5113495bSYour Name first loop, this value is set to 1. After the max value is 423*5113495bSYour Name reached allowed by the number of bits for this field, the 424*5113495bSYour Name count value continues with 0 again. 425*5113495bSYour Name 426*5113495bSYour Name 427*5113495bSYour Name 428*5113495bSYour Name In case SW is the consumer of the ring entries, it can 429*5113495bSYour Name use this field to figure out up to where the producer of 430*5113495bSYour Name entries has created new entries. This eliminates the need to 431*5113495bSYour Name check where the head pointer' of the ring is located once 432*5113495bSYour Name the SW starts processing an interrupt indicating that new 433*5113495bSYour Name entries have been put into this ring... 434*5113495bSYour Name 435*5113495bSYour Name 436*5113495bSYour Name 437*5113495bSYour Name Also note that SW if it wants only needs to look at the 438*5113495bSYour Name LSB bit of this count value. 439*5113495bSYour Name 440*5113495bSYour Name <legal all> 441*5113495bSYour Name */ 442*5113495bSYour Name #define TCL_STATUS_RING_7_LOOPING_COUNT_OFFSET 0x0000001c 443*5113495bSYour Name #define TCL_STATUS_RING_7_LOOPING_COUNT_LSB 28 444*5113495bSYour Name #define TCL_STATUS_RING_7_LOOPING_COUNT_MASK 0xf0000000 445*5113495bSYour Name 446*5113495bSYour Name 447*5113495bSYour Name #endif // _TCL_STATUS_RING_H_ 448