// ========== Copyright Header Begin ========================================== // // OpenSPARC T2 Processor File: niu_dma.vr // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved // 4150 Network Circle, Santa Clara, California 95054, U.S.A. // // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; version 2 of the License. // // This 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 program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // For the avoidance of doubt, and except that if any non-GPL license // choice is available it will apply instead, Sun elects to use only // the General Public License version 2 (GPLv2) at this time for any // software where a choice of GPL license versions is made // available with the language indicating that GPLv2 or any later version // may be used, or where a choice of which version of the GPL is applied is // otherwise unspecified. // // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, // CA 95054 USA or visit www.sun.com if you need additional information or // have any questions. // // ========== Copyright Header End ============================================ #include #include #include "niu_dmc_descr.vrh" #include "niu_dmc_descr_ring.vrh" #include "niu_int_dev.vrh" #include "niu_dma_bind.vrh" extern CNiuDMABind NiuDMABind; class CDMA extends CNiuIntrDev { integer id; integer type; //0=Tx or 1=Rx integer group_no = -1; integer function_no =-1; integer en_pio_virt=0; integer address_incr; // either 4 or 8 depending upon Tx or Rx // partition support shadow variables bit [63:0] ring_lpvalid; bit [63:0] ring_lpmask1; bit [63:0] ring_lpvalue1; bit [63:0] ring_lpmask2; bit [63:0] ring_lpvalue2; bit [63:0] ring_lprelo1; bit [63:0] ring_lprelo2; bit [63:0] ring_lphandle; // descriptor_ring -- - CDescrRing desc_ring; function bit[63:0] translate_address(bit[63:0] sw_address); virtual function integer isr( ( bit[1:0] ldf_flags = 0) ){} task SetDMAGroupBind( integer g); task ResetDMAGroupBind( integer g); function integer isDMABound(integer dma_no, integer tx_or_rx, integer group_no); function bit[63:0] getPIOAddress( bit[63:0] address, (integer pass_through=1)); task new( integer i, integer t, (integer intr_dev_id = 0) ) { super.new(intr_dev_id); id = i; type = t; } task SetDefFunc(integer func) { NiuDMABind.SetDefFunc(func,type,id); } } function bit[63:0] CDMA::getPIOAddress( bit[63:0] address, (integer pass_through=1)) { getPIOAddress = NiuDMABind.getPIOAddress(id, type, group_no, address, pass_through); } task CDMA::SetDMAGroupBind( integer g){ group_no = g; printf("CDMA::SetDMAGroupBind Group - %d DMA - %d \n",g,id); if(group_no<=15) { function_no = 0; } else if(group_no<=31) { function_no = 1; } else if(group_no<=47) { function_no = 2; } else if(group_no<=63) { function_no = 3; } else { printf(" ERROR Incorrect Group Number Specified for DMA - %d \n",id); } if(type==0) // TX NiuDMABind.SetTxBind(id,group_no); else // RX NiuDMABind.SetRxBind(id,group_no); } function integer CDMA::isDMABound(integer dma_no, integer tx_or_rx, integer group_no) { isDMABound = NiuDMABind.isDMABound(dma_no, tx_or_rx, group_no); } task CDMA::ResetDMAGroupBind( integer g){ group_no = g; printf("CDMA::ResetDMAGroupBind Group - %d DMA - %d \n",g,id); if(group_no<=15) { function_no = 0; } else if(group_no<=31) { function_no = 1; } else if(group_no<=47) { function_no = 2; } else if(group_no<=63) { function_no = 3; } else { printf(" ERROR Incorrect Group Number Specified for DMA - %d \n",id); } if(type==0) // TX NiuDMABind.ResetTxBind(id,group_no); else // RX NiuDMABind.ResetRxBind(id,group_no); group_no = -1; } function bit[63:0] CDMA ::translate_address(bit[63:0] sw_address) { integer loop=0; bit [31:0] mask_address; if(ring_lpvalid[0]) { // first check Page0 mask_address = sw_address[43:12] & ring_lpmask1; if(mask_address == ring_lpvalue1) { // translate the address printf("Address within the Page0\n"); translate_address[63:44] = ring_lphandle; for(loop=0;loop<32;loop++) { if(ring_lpmask1[loop]) translate_address[12+loop] = ring_lprelo1[loop]; else translate_address[12+loop] = sw_address[12+loop]; } // translate_address[43:12] = ring_lprelo1 & ring_lpmask1; translate_address[11:0] = sw_address[11:0]; printf("The Trans_Address is %0h\n",translate_address); } else { printf("Page0 enabled, but Address not within Page0\n"); // check for page1 mask_address = sw_address[43:12] & ring_lpmask2; if(mask_address == ring_lpvalue2) { // translate the address printf("Address within the Page1\n"); translate_address[63:44] = ring_lphandle; for(loop=0;loop<32;loop++) { if(ring_lpmask2[loop]) translate_address[12+loop] = ring_lprelo2[loop]; else translate_address[12+loop] = sw_address[12+loop]; } // translate_address[43:12] = ring_lprelo1 & ring_lpmask1; translate_address[11:0] = sw_address[11:0]; printf("The Trans_Address is %0h\n",translate_address); } else { printf("Page1 enabled, but Address not within Page1\n"); translate_address = sw_address; } } } else if(ring_lpvalid[1]) { // check if the address is in Page1 mask_address = sw_address[43:12] & ring_lpmask2; if(mask_address == ring_lpvalue2) { // translate the address printf("Address within the Page1\n"); translate_address[63:44] = ring_lphandle; for(loop=0;loop<32;loop++) { if(ring_lpmask2[loop]) translate_address[12+loop] = ring_lprelo2[loop]; else translate_address[12+loop] = sw_address[12+loop]; } // translate_address[43:12] = ring_lprelo1 & ring_lpmask1; translate_address[11:0] = sw_address[11:0]; printf("The Trans_Address is %0h\n",translate_address); } else { printf("Page1 enabled, but Address not within Page1\n"); translate_address = sw_address; } } else { printf("Neither Page0 or Page1 is defined, Potenial SW_Error\n"); translate_address = sw_address; } }