// ========== Copyright Header Begin ========================================== // // OpenSPARC T1 Processor File: lsu_asi_decode.v // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. // // The above named program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public // License version 2 as published by the Free Software Foundation. // // The above named 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 work; if not, write to the Free Software // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. // // ========== Copyright Header End ============================================ //////////////////////////////////////////////////////////////////////// /* // Description: ASI Decode for LSU */ //////////////////////////////////////////////////////////////////////// // Global header file includes //////////////////////////////////////////////////////////////////////// `include "sys.h" // system level definition file which contains the // time scale definition //////////////////////////////////////////////////////////////////////// // Local header file includes / local defines //////////////////////////////////////////////////////////////////////// module lsu_asi_decode (/*AUTOARG*/ // Outputs asi_internal_d, nucleus_asi_d, primary_asi_d, secondary_asi_d, lendian_asi_d, nofault_asi_d, quad_asi_d, binit_quad_asi_d, dcache_byp_asi_d, tlb_lng_ltncy_asi_d, tlb_byp_asi_d, as_if_user_asi_d, atomic_asi_d, blk_asi_d, dc_diagnstc_asi_d, dtagv_diagnstc_asi_d, wr_only_asi_d, rd_only_asi_d, unimp_asi_d, ifu_nontlb_asi_d, recognized_asi_d, ifill_tlb_asi_d, dfill_tlb_asi_d, rd_only_ltlb_asi_d, wr_only_ltlb_asi_d, phy_use_ec_asi_d, phy_byp_ec_asi_d, mmu_rd_only_asi_d, intrpt_disp_asi_d, dmmu_asi58_d, immu_asi50_d, // Inputs asi_d ); input [7:0] asi_d ; output asi_internal_d ; output nucleus_asi_d ; output primary_asi_d ; output secondary_asi_d ; output lendian_asi_d ; output nofault_asi_d ; output quad_asi_d ; output binit_quad_asi_d ; output dcache_byp_asi_d ; output tlb_lng_ltncy_asi_d ; output tlb_byp_asi_d ; output as_if_user_asi_d ; output atomic_asi_d ; output blk_asi_d ; //output blk_cmt_asi_d ; output dc_diagnstc_asi_d; output dtagv_diagnstc_asi_d; output wr_only_asi_d ; output rd_only_asi_d ; output unimp_asi_d ; output ifu_nontlb_asi_d ; // non-tlb asi's in ifu output recognized_asi_d ; output ifill_tlb_asi_d ; // itlb fill asi output dfill_tlb_asi_d ; // dtlb fill asi output rd_only_ltlb_asi_d ; // read-only long-latency asi output wr_only_ltlb_asi_d ; // write-only long-latency asi output phy_use_ec_asi_d ; output phy_byp_ec_asi_d ; output mmu_rd_only_asi_d ; // does not include asi with va output intrpt_disp_asi_d ; output dmmu_asi58_d ; output immu_asi50_d; wire quad_ldd_real, quad_ldd_real_little ; wire asi_if_user_prim_all_d,asi_if_user_sec_all_d ; wire asi_if_user_prim_d,asi_if_user_sec_d ; wire nucleus_asi_exact_d ; wire prim_asi_exact_d ; wire phy_use_ec_asi ; wire phy_byp_ec_asi ; wire sec_asi_exact_d ; wire idemap,ddemap,ddata_in,ddaccess ; wire dtag_read,idata_in,idaccess,invld_all,itag_read ; wire blk_asif_usr_plittle, blk_asif_usr_slittle ; wire blk_plittle, blk_slittle ; wire blk_asif_usr_p, blk_asif_usr_s ; wire blk_cmt_p, blk_cmt_s; wire blk_p, blk_s ; wire binit_nucleus_d, binit_nucleus_little_d ; wire real_mem_little,real_io_little ; wire unimp_CD_prm; wire unimp_CD_sec; // Start decode in d-stage. Required late e-stage. The logic could // be moved to the e-stage to save staging flops. wire dtsb_8k_ptr, dtsb_64k_ptr, dtsb_dir_ptr; wire itsb_8k_ptr, itsb_64k_ptr; assign dtsb_8k_ptr = (asi_d[7:0] == 8'h59) ; assign dtsb_64k_ptr = (asi_d[7:0] == 8'h5A) ; assign dtsb_dir_ptr = (asi_d[7:0] == 8'h5B) ; assign itsb_8k_ptr = (asi_d[7:0] == 8'h51) ; assign itsb_64k_ptr = (asi_d[7:0] == 8'h52) ; assign mmu_rd_only_asi_d = dtsb_8k_ptr | dtsb_64k_ptr | dtsb_dir_ptr | itsb_8k_ptr | itsb_64k_ptr ; assign intrpt_disp_asi_d = (asi_d[7:0] == 8'h73) ; // INTR_W assign dmmu_asi58_d = (asi_d[7:0] == 8'h58) ; assign immu_asi50_d = (asi_d[7:0] == 8'h50) ; // ASI Internal Registers - switches out thread among other things assign asi_internal_d = (asi_d[7:0] == 8'h40) | // streaming/ma (asi_d[7:0] == 8'h45) | // LSU Control (asi_d[7:0] == 8'h50) | // I-TSB Tag Target/SFSR/TSB/Tag-Access itsb_8k_ptr | // I-TSB 8K Ptr itsb_64k_ptr | // I-TSB 64K Ptr dmmu_asi58_d | //(asi_d[7:0] == 8'h58) | // D-TSB Tag Target/SFSR/SFAR/TSB/Tag-Access/VA-PA-Watchpt (asi_d[7:0] == 8'h21) | // Primary/Secondary Context (asi_d[7:0] == 8'h20) | // Scratchpad. (asi_d[7:0] == 8'h25) | // Queue (asi_d[7:0] == 8'h4F) | // Hyp Scratchpad dtsb_8k_ptr | // D-TSB 8K Ptr dtsb_64k_ptr | // D-TSB 64K Ptr dtsb_dir_ptr | // D-TSB Direct Ptr (asi_d[7:0] == 8'h72) | // INTR_RECEIVE intrpt_disp_asi_d | // INTR_W (asi_d[7:0] == 8'h74) | // INTR_R (asi_d[7:0] == 8'h44) | // Self-Timed Margin Ctl (asi_d[7:0] == 8'h31) | // dmmu_zctxt_ps0_tsb (asi_d[7:0] == 8'h32) | // dmmu_zctxt_ps1_tsb (asi_d[7:0] == 8'h39) | // dmmu_nzctxt_ps0_tsb (asi_d[7:0] == 8'h3A) | // dmmu_nzctxt_ps1_tsb (asi_d[7:0] == 8'h33) | // dmmu_zctxt_cfg_tsb (asi_d[7:0] == 8'h3B) | // dmmu_nzctxt_cfg_tsb (asi_d[7:0] == 8'h35) | // immu_zctxt_ps0_tsb (asi_d[7:0] == 8'h36) | // immu_zctxt_ps1_tsb (asi_d[7:0] == 8'h3D) | // immu_nzctxt_ps0_tsb (asi_d[7:0] == 8'h3E) | // immu_nzctxt_ps1_tsb (asi_d[7:0] == 8'h37) | // immu_zctxt_cfg_tsb (asi_d[7:0] == 8'h3F) | // immu_nzctxt_cfg_tsb dc_diagnstc_asi_d | // Dcache Diagnostic dtagv_diagnstc_asi_d | // Dcache Diagnostic tlb_lng_ltncy_asi_d | ifu_nontlb_asi_d ; assign ifu_nontlb_asi_d = (asi_d[7:0] == 8'h42) | // instruction-mask (asi_d[7:0] == 8'h43) | // error-inj (asi_d[7:0] == 8'h4B) | // sparc-error-enable (asi_d[7:0] == 8'h4C) | // sparc-error-status (asi_d[7:0] == 8'h4D) | // sparc-error-address (asi_d[7:0] == 8'h66) | // icache-instr (asi_d[7:0] == 8'h67) ; // icache-tag assign dc_diagnstc_asi_d = (asi_d[7:0] == 8'h46) ; assign dtagv_diagnstc_asi_d = (asi_d[7:0] == 8'h47) ; assign idemap = (asi_d[7:0] == 8'h57) ; // I-MMU Demap Operation assign ddemap = (asi_d[7:0] == 8'h5F) ; // D-MMU Demap Operation assign ddata_in = (asi_d[7:0] == 8'h5C) ; // D-TLB Data-In assign ddaccess = (asi_d[7:0] == 8'h5D) ; // D-TLB Data-Access assign dtag_read = (asi_d[7:0] == 8'h5E) ; // D-TLB Tag Read assign idata_in = (asi_d[7:0] == 8'h54) ; // I-TLB Data-In assign idaccess = (asi_d[7:0] == 8'h55) ; // I-TLB Data-Access assign invld_all = (asi_d[7:0] == 8'h60) ; // I/D Invalidate All assign itag_read = (asi_d[7:0] == 8'h56) ; // I-TLB Tag Read assign tlb_lng_ltncy_asi_d = idemap | ddemap | ddata_in | ddaccess | dtag_read | idata_in | idaccess | invld_all | itag_read ; assign wr_only_ltlb_asi_d = ddata_in | idata_in | idemap | ddemap | invld_all ; assign rd_only_ltlb_asi_d = dtag_read | itag_read ; assign ifill_tlb_asi_d = // itlb fill asi idata_in | idaccess ; assign dfill_tlb_asi_d = // i/d tlb fill asi ddata_in | ddaccess ; assign nucleus_asi_exact_d = (asi_d[7:0] == 8'h04) | // asi_nucleus (asi_d[7:0] == 8'h0C) ; // asi_nucleus_little // Nucleus Ctxt assign nucleus_asi_d = nucleus_asi_exact_d | (asi_d[7:0] == 8'h24) | // asi_nucleus_quad_ldd (asi_d[7:0] == 8'h2C) ; // asi_nucleus_quad_ldd_little assign asi_if_user_prim_d = (asi_d[7:0] == 8'h10) | // asi_as_if_user_primary (asi_d[7:0] == 8'h18) ; // asi_as_if_user_primary_little // asi_if_user primary asi assign asi_if_user_prim_all_d = asi_if_user_prim_d | (asi_d[7:0] == 8'h22) | // asi_as_if_user_primary_quad_ldd (blk-init) (asi_d[7:0] == 8'h2A) ; // asi_as_if_user_primary_quad_ldd_little (blk-init) assign prim_asi_exact_d = (asi_d[7:0] == 8'h80) | // asi_primary (asi_d[7:0] == 8'h88) ; // asi_primary_little // Primary Ctxt assign primary_asi_d = asi_if_user_prim_all_d | prim_asi_exact_d | (asi_d[7:0] == 8'h82) | // asi_primary_no_fault (asi_d[7:0] == 8'h8A) | // asi_primary_no_fault_little (asi_d[7:0] == 8'hE2) | // asi_primary_quad_ldd (blk-init) (asi_d[7:0] == 8'hEA) | // asi_primary_quad_ldd_little (blk-init) blk_asif_usr_p | blk_asif_usr_plittle | blk_plittle | blk_p | // block primary asi blk_cmt_p | // Bug 4051 unimp_CD_prm ; // Bug 4532 assign asi_if_user_sec_d = (asi_d[7:0] == 8'h11) | // asi_as_if_user_secondary (asi_d[7:0] == 8'h19) ; // asi_as_if_user_secondary_little // asi_if_user secondary asi assign asi_if_user_sec_all_d = asi_if_user_sec_d | (asi_d[7:0] == 8'h23) | // asi_as_if_user_secondary_quad_ldd (blk-init) (asi_d[7:0] == 8'h2B) ; // asi_as_if_user_secondary_quad_ldd_little (blk-init) assign as_if_user_asi_d = asi_if_user_prim_all_d | asi_if_user_sec_all_d | blk_asif_usr_p | blk_asif_usr_plittle | blk_asif_usr_s | blk_asif_usr_slittle ; assign sec_asi_exact_d = (asi_d[7:0] == 8'h81) | // asi_secondary (asi_d[7:0] == 8'h89) ; // asi_secondary_little // Secondary Ctxt assign secondary_asi_d = asi_if_user_sec_all_d | sec_asi_exact_d | (asi_d[7:0] == 8'h83) | // asi_secondary_no_fault (asi_d[7:0] == 8'h8B) | // asi_secondary_no_fault_little (asi_d[7:0] == 8'hE3) | // asi_secondary_quad_ldd (blk-init) (asi_d[7:0] == 8'hEB) | // asi_secondary_quad_ldd_little (blk-init) blk_asif_usr_s | blk_asif_usr_slittle | blk_slittle | blk_s | // block secondary asi blk_cmt_s | // Bug 4051 unimp_CD_sec; // Bug 4532 // Little Endian assign lendian_asi_d = (asi_d[7:0] == 8'h0C) | // asi_nucleus_little (asi_d[7:0] == 8'h2C) | // asi_nucleus_quad_ldd_little (asi_d[7:0] == 8'h18) | // asi_as_if_user_primary_little (asi_d[7:0] == 8'h8A) | // asi_primary_no_fault_little (asi_d[7:0] == 8'h8B) | // asi_secondary_no_fault_little (asi_d[7:0] == 8'h2A) | // asi_as_if_user_primary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'hEA) | // asi_primary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'h19) | // asi_as_if_user_secondary_little (asi_d[7:0] == 8'h89) | // asi_secondary_little (asi_d[7:0] == 8'h88) | // asi_primary_little (asi_d[7:0] == 8'h2B) | // asi_as_if_user_secondary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'hEB) | // asi_secondary_quad_ldd_little (blk-init) real_mem_little | real_io_little | //(asi_d[7:0] == 8'h1D) | // asi_phys_bypass_ec_with_ebit_littl //(asi_d[7:0] == 8'h1C) | // asi_phys_bypass_ec_with_ebit_littl blk_asif_usr_plittle | blk_asif_usr_slittle | // little blk_plittle | blk_slittle | // little quad_ldd_real_little | // asi_quad_ldd_real_little binit_nucleus_little_d ;// asi_nucleus_blk_init_st_quad_ldd_little // No Fault assign nofault_asi_d = (asi_d[7:0] == 8'h82) | // asi_primary_no_fault (asi_d[7:0] == 8'h8A) | // asi_primary_no_fault_little (asi_d[7:0] == 8'h83) | // asi_secondary_no_fault (asi_d[7:0] == 8'h8B) ; // asi_secondary_no_fault_little assign binit_nucleus_d = (asi_d[7:0] == 8'h27) ; // asi_nucleus_blk_init_st_quad_ldd assign binit_nucleus_little_d = (asi_d[7:0] == 8'h2F) ; // asi_nucleus_blk_init_st_quad_ldd_little // Quad (These are duplicated - they can be shared) assign binit_quad_asi_d = binit_nucleus_d | // asi_nucleus_blk_init_st_quad_ldd binit_nucleus_little_d |// asi_nucleus_blk_init_st_quad_ldd_little (asi_d[7:0] == 8'h22) | // asi_as_if_user_primary_quad_ldd (blk-init) (asi_d[7:0] == 8'h2A) | // asi_as_if_user_primary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'h23) | // asi_as_if_user_secondary_quad_ldd (blk-init) (asi_d[7:0] == 8'h2B) | // asi_as_if_user_secondary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'hE2) | // asi_primary_quad_ldd (blk-init) (asi_d[7:0] == 8'hEA) | // asi_primary_quad_ldd_little (blk-init) (asi_d[7:0] == 8'hE3) | // asi_secondary_quad_ldd (blk-init) (asi_d[7:0] == 8'hEB) ; // asi_secondary_quad_ldd_little (blk-init) assign quad_ldd_real = (asi_d[7:0] == 8'h26) ; // asi_quad_ldd_real assign quad_ldd_real_little = (asi_d[7:0] == 8'h2E) ; // asi_quad_ldd_real_little assign quad_asi_d = binit_quad_asi_d | // blk-init quad asi quad_ldd_real | // asi_quad_ldd_real quad_ldd_real_little | // asi_quad_ldd_real_little (asi_d[7:0] == 8'h24) | // asi_nucleus_quad_ldd (asi_d[7:0] == 8'h2C) ; // asi_nucleus_quad_ldd_little // EC assign real_io_little = (asi_d[7:0] == 8'h1D) ; assign real_mem_little = (asi_d[7:0] == 8'h1C) ; assign phy_byp_ec_asi = (asi_d[7:0] == 8'h15) | // asi_phys_bypass_ec_with_ebit(real_io) real_io_little ; // asi_phys_bypass_ec_with_ebit_little(real_io_little) //(asi_d[7:0] == 8'h1D) ; // asi_phys_bypass_ec_with_ebit_little(real_io_little) // asi assumed for io address specifically !! // asi assumed for io address specifically !! assign phy_use_ec_asi = (asi_d[7:0] == 8'h14) | // asi_phys_use_ec(real_mem) real_mem_little ; // asi_phys_use_ec_little(real_mem_little) //(asi_d[7:0] == 8'h1C) ; // asi_phys_use_ec_little(real_mem_little) assign phy_use_ec_asi_d = phy_use_ec_asi ; assign phy_byp_ec_asi_d = phy_byp_ec_asi ; // Physical Use - Always results in R->P xslation. assign tlb_byp_asi_d = phy_byp_ec_asi | phy_use_ec_asi | quad_ldd_real | quad_ldd_real_little ; // Atomic asi assign atomic_asi_d = nucleus_asi_exact_d | prim_asi_exact_d | sec_asi_exact_d | asi_if_user_prim_d | asi_if_user_sec_d | phy_use_ec_asi ; assign dcache_byp_asi_d = tlb_byp_asi_d ; // ASI causing Data Access Exceptions - (TBD) assign rd_only_asi_d = (asi_d[7:0] == 8'h82) | // asi_primary_no_fault (asi_d[7:0] == 8'h8A) | // asi_primary_no_fault_little (asi_d[7:0] == 8'h83) | // asi_secondary_no_fault (asi_d[7:0] == 8'h8B) | // asi_secondary_no_fault_little (asi_d[7:0] == 8'h74) ; // asi_swrvr_udb_intr_r !! Does not have to be done by intrpt blk !! assign wr_only_asi_d = (asi_d[7:0] == 8'h73) ; // asi_swrvr_udb_intr_w // Block Asi assign blk_asif_usr_p = (asi_d[7:0] == 8'h16) ; // asi_block_as_if_user_primary assign blk_asif_usr_plittle = (asi_d[7:0] == 8'h1E) ; // asi_block_as_if_user_primary_little assign blk_asif_usr_s = (asi_d[7:0] == 8'h17) ; // asi_block_as_if_user_secondary assign blk_asif_usr_slittle = (asi_d[7:0] == 8'h1F) ; // asi_block_as_if_user_secondary_little assign blk_plittle = (asi_d[7:0] == 8'hF8) ; // asi_block_primary_little assign blk_slittle = (asi_d[7:0] == 8'hF9) ; // asi_block_secondary_little assign blk_cmt_p = (asi_d[7:0] == 8'hE0) ; // asi_block_commit_primary ?? behaviour assign blk_cmt_s = (asi_d[7:0] == 8'hE1) ; // asi_block_commit_secondary ?? behaviour assign blk_p = (asi_d[7:0] == 8'hF0) ; // asi_block_primary assign blk_s = (asi_d[7:0] == 8'hF1) ; // asi_block_secondary //assign blk_cmt_asi_d = blk_cmt_p | blk_cmt_s ; assign blk_asi_d = blk_asif_usr_p | blk_asif_usr_s | blk_plittle | blk_slittle | //blk_cmt_p | blk_cmt_s | blk_p | blk_s | blk_asif_usr_plittle | blk_asif_usr_slittle | // little blk_plittle | blk_slittle ; // little // add to little-endian decode // add to use_real ... //assign as_if_supv = // (asi_d[7:0] == 8'h??) | // asi_if_supv_real // (asi_d[7:0] == 8'h??) ; // asi_if_supv_real_little wire unimp_C ; assign unimp_C = ((asi_d[7:4]==4'hC) & ~((asi_d[3:0]==4'h6) | (asi_d[3:0]==4'h7) | (asi_d[3:0]==4'hE) | (asi_d[3:0]==4'hF))) ; wire unimp_D ; assign unimp_D = ((asi_d[7:4]==4'hD) & ~((asi_d[3:0]==4'h4) | (asi_d[3:0]==4'h5) | (asi_d[3:0]==4'h6) | (asi_d[3:0]==4'h7) | (asi_d[3:0]==4'hC) | (asi_d[3:0]==4'hD) | (asi_d[3:0]==4'hE) | (asi_d[3:0]==4'hF))) ; assign unimp_CD_prm = (asi_d[7:0] == 8'hC0) | (asi_d[7:0] == 8'hC2) | (asi_d[7:0] == 8'hC4) | (asi_d[7:0] == 8'hC8) | (asi_d[7:0] == 8'hCA) | (asi_d[7:0] == 8'hCC) | (asi_d[7:0] == 8'hD0) | (asi_d[7:0] == 8'hD2) | (asi_d[7:0] == 8'hD8) | (asi_d[7:0] == 8'hDA) ; assign unimp_CD_sec = (asi_d[7:0] == 8'hC1) | (asi_d[7:0] == 8'hC3) | (asi_d[7:0] == 8'hC5) | (asi_d[7:0] == 8'hC9) | (asi_d[7:0] == 8'hCB) | (asi_d[7:0] == 8'hCD) | (asi_d[7:0] == 8'hD1) | (asi_d[7:0] == 8'hD3) | (asi_d[7:0] == 8'hD9) | (asi_d[7:0] == 8'hDB) ; // Unimplemented asi assign unimp_asi_d = // Bug 4692 - all unimplemented internal asi are now // illegal. // (asi_d[7:0] == 8'h6E) | // asi_icache_pre_decode // (asi_d[7:0] == 8'h6F) | // asi_icache_next_field // (asi_d[7:0] == 8'h48) | // asi_intr_dispatch_status // (asi_d[7:0] == 8'h49) | // asi_intr_receive // (asi_d[7:0] == 8'h4A) | // asi_upa_config_register // (asi_d[7:0] == 8'h4E) | // asi_ecache_tag_data // dflush_asi_d | //Bug 4580 unimp_C | unimp_D | // Bug 4438 blk_cmt_p | blk_cmt_s ; // Set of recognized asi's assign recognized_asi_d = asi_internal_d | nucleus_asi_d | primary_asi_d | secondary_asi_d | lendian_asi_d | nofault_asi_d | quad_asi_d | tlb_byp_asi_d | unimp_asi_d | blk_asi_d ; // Displacement Flush for L2 //assign dflush_asi_d = // (asi_d[7:0] == 8'h30) ; // asi_direct_map_ecache endmodule