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[/] [an-fpga-implementation-of-low-latency-noc-based-mpsoc/] [trunk/] [mpsoc/] [src_verilator/] [topology/] [mesh.h] - Blame information for rev 48

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#ifndef MESH_H
        #define MESH_H
 
        #define  LOCAL          0
        #define  EAST       1 
        #define  NORTH      2  
        #define  WEST       3  
        #define  SOUTH      4
 
        //ring line            
        #define  FORWARD    1
        #define  BACKWARD   2
        #define router_id(x,y)  ((y * T1) +    x)
        #define endp_id(x,y,l)  ((y * T1) +    x) * T3 + l 
 
 
 
        unsigned int nxw=0;
        unsigned int nyw=0;
        unsigned int maskx=0;
        unsigned int masky=0;
 
 
 
        void mesh_tori_addrencod_sep(unsigned int id, unsigned int *x, unsigned int *y, unsigned int *l){
                (*l)=id%T3; // id%NL
                (*x)=(id/T3)%T1;// (id/NL)%NX
                (*y)=(id/T3)/T1;// (id/NL)/NX
        }
 
 
        void mesh_tori_addr_sep(unsigned int code, unsigned int *x, unsigned int *y, unsigned int *l){
                (*x) = code &  maskx;
                code>>=nxw;
                (*y) = code &  masky;
                code>>=nyw;
                (*l) = code;
        }
 
 
 
        unsigned int mesh_tori_addr_join(unsigned int x, unsigned int y, unsigned int l){
 
                unsigned int addrencode=0;
                addrencode =(T3==1)?   (y<<nxw | x) : (l<<(nxw+nyw)|  (y<<nxw) | x);
                return addrencode;
        }
 
        unsigned int mesh_tori_addrencode (unsigned int id){
                unsigned int y, x, l;
                mesh_tori_addrencod_sep(id,&x,&y,&l);
                return mesh_tori_addr_join(x,y,l);
        }
 
 
        void fmesh_addrencod_sep(unsigned int id, unsigned int *x, unsigned int *y, unsigned int *p){
                unsigned int  l, diff,mul,addrencode;
                mul  = T1*T2*T3;
                if(id < mul) {
                        *y = ((id/T3) / T1 );
                        *x = ((id/T3) % T1 );
                        l = (id % T3);
                        *p = (l==0)? LOCAL : 4+l;
                }else{
                        diff = id -  mul ;
                        if( diff <  T1) { //top mesh edge
                                        *y = 0;
                                        *x = diff;
                                        *p = NORTH;
                        } else if  ( diff < 2* T1) { //bottom mesh edge
                                        *y = T2-1;
                                        *x = diff-T1;
                                        *p = SOUTH;
                        } else if  ( diff < (2* T1) + T2 ) { //left mesh edge
                                        *y = diff - (2* T1);
                                        *x = 0;
                                        *p = WEST;
                        } else { //right mesh edge
                                        *y = diff - (2* T1) -T2;
                                        *x = T1-1;
                                        *p = EAST;
                        }
                }
 
        }
 
 
        unsigned int fmesh_addrencode(unsigned int id){
        //input integer in,nx,nxw,nl,nyw,ny;
                unsigned int  y, x, p, addrencode;
                fmesh_addrencod_sep(id, &x, &y, &p);
                addrencode = ( p<<(nxw+nyw) | (y<<nxw) | x);
                return addrencode;
        }
 
 
        unsigned int fmesh_endp_addr_decoder (unsigned int code){
                unsigned int x, y, p;
                mesh_tori_addr_sep(code,&x,&y,&p);
                if(p== LOCAL)   return ((y*T1)+x)*T3;
                if(p > SOUTH)   return ((y*T1)+x)*T3+(p-SOUTH);
                if(p== NORTH)   return ((T1*T2*T3) + x);
                if(p== SOUTH)   return ((T1*T2*T3) + T1 + x);
                if(p== WEST )   return ((T1*T2*T3) + 2*T1 + y);
                if(p== EAST )   return ((T1*T2*T3) + 2*T1 + T2 + y);
                return 0;//should not reach here
        }
 
 
 
 
 
 
        unsigned int mesh_tori_endp_addr_decoder (unsigned int code){
                unsigned int x, y, l;
                mesh_tori_addr_sep(code,&x,&y,&l);
                //if(code==0x1a) printf("code=%x,x=%u,y=%u,l=%u\n",code,x,y,l);
                return ((y*T1)+x)*T3+l;
        }
 
 
        unsigned int endp_addr_encoder ( unsigned int id){
                        #if defined (IS_MESH) || defined (IS_TORUS) || defined (IS_LINE) || defined (IS_RING )
                                return mesh_tori_addrencode(id);
                        #endif
                        return fmesh_addrencode(id);
        }
 
 
        unsigned int endp_addr_decoder (unsigned int code){
                #if defined (IS_MESH) || defined (IS_TORUS) || defined (IS_LINE) || defined (IS_RING )
                        return mesh_tori_endp_addr_decoder (code);
                #endif
                return fmesh_endp_addr_decoder (code);
        }
 
 
 
 
void topology_connect_all_nodes (void){
 
 
        unsigned int  x,y,l;
        #if defined (IS_LINE) || defined (IS_RING ) 
                        #define R2R_CHANELS_MESH_TORI   2 
                        for  (x=0;   x<T1; x=x+1) {
 
                                router1[x]->current_r_addr = x;
                                if(x    <   T1-1){// not_last_node 
                                        //assign  router_chan_in[x][FORWARD] = router_chan_out [(x+1)][BACKWARD];
                                        conect_r2r(1,x,FORWARD,1,(x+1),BACKWARD);
 
                                } else { //last_node
 
                                        #if defined (IS_LINE) // : line_last_x
                                                //assign  router_chan_in[x][FORWARD]= {SMARTFLIT_CHANEL_w{1'b0}};
                                                connect_r2gnd(1,x,FORWARD);
                                        #else // : ring_last_x
                                                //assign router_chan_in[x][FORWARD]= router_chan_out [0][BACKWARD];
                                                conect_r2r(1,x,FORWARD,1,0,BACKWARD);
                                        #endif
                                }
 
                                if(x>0){// :not_first_x
                                        //assign router_chan_in[x][BACKWARD]= router_chan_out [(x-1)][FORWARD];
                                        conect_r2r(1,x,BACKWARD,1,(x-1),FORWARD);
 
                                }else {// :first_x
                                        #if defined (IS_LINE) // : line_first_x
                                                //assign  router_chan_in[x][BACKWARD]={SMARTFLIT_CHANEL_w{1'b0}};                                       
                                                connect_r2gnd(1,x,BACKWARD);
                                        #else // : ring_first_x
                                                //assign  router_chan_in[x][BACKWARD]= router_chan_out [(NX-1)][FORWARD];                                                                                       
                                                conect_r2r(1,x,BACKWARD,1,(T1-1),FORWARD);
                                        #endif
                                }
 
                                // connect other local ports
                                for  (l=0;   l<T3; l=l+1) {// :locals
                                        unsigned int ENDPID = endp_id(x,0,l);
                                        unsigned int LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the } 
                                        //assign router_chan_in[x][LOCALP]= chan_in_all [ENDPID];
                                        //assign chan_out_all [ENDPID] = router_chan_out[x][LOCALP];
                                        connect_r2e(1,x,LOCALP,ENDPID);
                                        er_addr [ENDPID] = x;
 
                                }// locals               
                        }//x    
 
                #else // :mesh_torus
                        #define R2R_CHANELS_MESH_TORI   4 
                        for (y=0;    y<T2;    y=y+1) {//: y_loop
                                for (x=0;    x<T1; x=x+1) {// :x_loop
                                unsigned int R_ADDR = (y<<nxw) + x;
                                unsigned int ROUTER_NUM = (y * T1) +    x;
                                //assign current_r_addr [ROUTER_NUM] = R_ADDR[RAw-1 :0];
                router1[ROUTER_NUM]->current_r_addr = R_ADDR;
 
 
                                if(x    <    T1-1) {//: not_last_x
                                        //assign router_chan_in[`router_id(x,y)][EAST]= router_chan_out [`router_id(x+1,y)][WEST];
                                        conect_r2r(1,router_id(x,y),EAST,1,router_id(x+1,y),WEST);
 
                                }else {// :last_x
                                        #if defined (IS_MESH) // :last_x_mesh
                                                //      assign router_chan_in[`router_id(x,y)][EAST] = {SMARTFLIT_CHANEL_w{1'b0}};                                      
                                                connect_r2gnd(1,router_id(x,y),EAST);
                                        #elif defined (IS_TORUS) // : last_x_torus
                                                //assign router_chan_in[`router_id(x,y)][EAST] = router_chan_out [`router_id(0,y)][WEST];
                                                conect_r2r(1,router_id(x,y),EAST,1,router_id(0,y),WEST);
                                        #elif defined (IS_FMESH) //:last_x_fmesh
                                                //connect to endp
                                                unsigned int  EAST_ID = T1*T2*T3 + 2*T1 + T2 + y;
                                                connect_r2e(1,router_id(x,y),EAST,EAST_ID);
                                                er_addr [EAST_ID] = R_ADDR;
                                        #endif//topology
                                }
 
 
                                if(y>0) {// : not_first_y
                                        //assign router_chan_in[`router_id(x,y)][NORTH] =  router_chan_out [`router_id(x,(y-1))][SOUTH];                                        
                                        conect_r2r(1,router_id(x,y),NORTH,1,router_id(x,(y-1)),SOUTH);
                                }else {// :first_y
                                        #if defined (IS_MESH) // : first_y_mesh
                                                //assign router_chan_in[`router_id(x,y)][NORTH] =  {SMARTFLIT_CHANEL_w{1'b0}};                                                                                          
                                                connect_r2gnd(1,router_id(x,y),NORTH);
                                        #elif defined (IS_TORUS)// :first_y_torus
                                                //assign router_chan_in[`router_id(x,y)][NORTH] =  router_chan_out [`router_id(x,(T2-1))][SOUTH];
                                                conect_r2r(1,router_id(x,y),NORTH,1,router_id(x,(T2-1)),SOUTH);
                                        #elif defined (IS_FMESH) // :first_y_fmesh
                                                unsigned int NORTH_ID = T1*T2*T3 + x;
                                                connect_r2e(1,router_id(x,y),NORTH,NORTH_ID);
                                                er_addr [NORTH_ID] = R_ADDR;
                                        #endif//topology
                                }//y>0
 
 
                                if(x>0){// :not_first_x
                                        //assign    router_chan_in[`router_id(x,y)][WEST] =  router_chan_out [`router_id((x-1),y)][EAST];                                       
                                        conect_r2r(1,router_id(x,y),WEST,1,router_id((x-1),y),EAST);
                                }else {// :first_x
 
                                        #if defined (IS_MESH) // :first_x_mesh
                                                //assign    router_chan_in[`router_id(x,y)][WEST] =   {SMARTFLIT_CHANEL_w{1'b0}};
                                                connect_r2gnd(1,router_id(x,y),WEST);
 
                                        #elif defined (IS_TORUS) // :first_x_torus
                                                //assign    router_chan_in[`router_id(x,y)][WEST] =   router_chan_out [`router_id((NX-1),y)][EAST] ;                                            
                                                conect_r2r(1,router_id(x,y),WEST,1,router_id((T1-1),y),EAST);
                                        #elif defined (IS_FMESH) // :first_x_fmesh
                                                unsigned int WEST_ID = T1*T2*T3 + 2*T1 + y;
                                                connect_r2e(1,router_id(x,y),WEST,WEST_ID);
                                                er_addr [WEST_ID] = R_ADDR;
                                        #endif//topology
                                }
 
                                if(y    <    T2-1) {// : firsty
                                        //assign  router_chan_in[`router_id(x,y)][SOUTH] =    router_chan_out [`router_id(x,(y+1))][NORTH];                                     
                                        conect_r2r(1,router_id(x,y),SOUTH,1,router_id(x,(y+1)),NORTH);
                                }else     {// : lasty
 
                                        #if defined (IS_MESH) // :ly_mesh
 
                                                //assign  router_chan_in[`router_id(x,y)][SOUTH]=  {SMARTFLIT_CHANEL_w{1'b0}};
                                                connect_r2gnd(1,router_id(x,y),SOUTH);
 
                                        #elif defined (IS_TORUS) // :ly_torus
                                                //assign  router_chan_in[`router_id(x,y)][SOUTH]=    router_chan_out [`router_id(x,0)][NORTH];
                                                conect_r2r(1,router_id(x,y),SOUTH,1,router_id(x,0),NORTH);
                                        #elif defined (IS_FMESH)  // :ly_Fmesh
                                                unsigned int SOUTH_ID = T1*T2*T3 + T1 + x;
                                                connect_r2e(1,router_id(x,y),SOUTH,SOUTH_ID);
                                                er_addr [SOUTH_ID] = R_ADDR;
                                        #endif//topology
                                }
 
 
                                // endpoint(s) connection
                                // connect other local ports
                                for  (l=0;   l<T3; l=l+1) {// :locals
                                        unsigned int ENDPID = endp_id(x,y,l);
                                        unsigned int LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the } 
 
                                        //assign router_chan_in [`router_id(x,y)][LOCALP] =    chan_in_all [ENDPID];
                                        //assign chan_out_all [ENDPID] = router_chan_out [`router_id(x,y)][LOCALP];     
                                        //assign er_addr [ENDPID] = R_ADDR;             
                    connect_r2e(1,router_id(x,y),LOCALP,ENDPID);
                                        er_addr [ENDPID] = R_ADDR;
                                }// locals                 
 
                        }//y
                }//x
        #endif     
 
 
}
 
 
void topology_init(void){
        nxw=Log2(T1);
        nyw=Log2(T2);
    maskx = (0x1<<nxw)-1;
    masky = (0x1<<nyw)-1;
}
 
 
unsigned int get_mah_distance ( unsigned int id1, unsigned int id2){
        #if defined (IS_FMESH)
                unsigned int x1,y1,p1,x2,y2,p2;
                fmesh_addrencod_sep        ( id1, &x1, &y1, &p1);
                fmesh_addrencod_sep        ( id2, &x2, &y2, &p2);
    #else
                unsigned int x1,y1,l1,x2,y2,l2;
                mesh_tori_addrencod_sep(id1, &x1, &y1, &l1);
                mesh_tori_addrencod_sep(id2, &x2, &y2, &l2);
        #endif
 
        unsigned int x_diff = (x1 > x2) ? (x1 - x2) : (x2 - x1);
        unsigned int y_diff = (y1 > y2) ? (y1 - y2) : (y2 - y1);
        return x_diff + y_diff;
}
 
 
#endif

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Subversion Repositories an-fpga-implementation-of-low-latency-noc-based-mpsoc

[/] [an-fpga-implementation-of-low-latency-noc-based-mpsoc/] [trunk/] [mpsoc/] [src_verilator/] [topology/] [mesh.h] - Blame information for rev 48

Line No.	Rev	Author	Line
1	48	alirezamon	`#ifndef MESH_H`
2			`#define MESH_H`
3
4			`#define LOCAL 0`
5			`#define EAST 1`
6			`#define NORTH 2`
7			`#define WEST 3`
8			`#define SOUTH 4`
9
10			`//ring line`
11			`#define FORWARD 1`
12			`#define BACKWARD 2`
13			`#define router_id(x,y) ((y * T1) + x)`
14			`#define endp_id(x,y,l) ((y * T1) + x) * T3 + l`
15
16
17
18			`unsigned int nxw=0;`
19			`unsigned int nyw=0;`
20			`unsigned int maskx=0;`
21			`unsigned int masky=0;`
22
23
24
25			`void mesh_tori_addrencod_sep(unsigned int id, unsigned int x, unsigned int y, unsigned int *l){`
26			`(*l)=id%T3; // id%NL`
27			`(*x)=(id/T3)%T1;// (id/NL)%NX`
28			`(*y)=(id/T3)/T1;// (id/NL)/NX`
29			`}`
30
31
32			`void mesh_tori_addr_sep(unsigned int code, unsigned int x, unsigned int y, unsigned int *l){`
33			`(*x) = code & maskx;`
34			`code>>=nxw;`
35			`(*y) = code & masky;`
36			`code>>=nyw;`
37			`(*l) = code;`
38			`}`
39
40
41
42			`unsigned int mesh_tori_addr_join(unsigned int x, unsigned int y, unsigned int l){`
43
44			`unsigned int addrencode=0;`
45			`addrencode =(T3==1)? (y<<nxw \| x) : (l<<(nxw+nyw)\| (y<<nxw) \| x);`
46			`return addrencode;`
47			`}`
48
49			`unsigned int mesh_tori_addrencode (unsigned int id){`
50			`unsigned int y, x, l;`
51			`mesh_tori_addrencod_sep(id,&x,&y,&l);`
52			`return mesh_tori_addr_join(x,y,l);`
53			`}`
54
55
56			`void fmesh_addrencod_sep(unsigned int id, unsigned int x, unsigned int y, unsigned int *p){`
57			`unsigned int l, diff,mul,addrencode;`
58			`mul = T1T2T3;`
59			`if(id < mul) {`
60			`*y = ((id/T3) / T1 );`
61			`*x = ((id/T3) % T1 );`
62			`l = (id % T3);`
63			`*p = (l==0)? LOCAL : 4+l;`
64			`}else{`
65			`diff = id - mul ;`
66			`if( diff < T1) { //top mesh edge`
67			`*y = 0;`
68			`*x = diff;`
69			`*p = NORTH;`
70			`} else if ( diff < 2* T1) { //bottom mesh edge`
71			`*y = T2-1;`
72			`*x = diff-T1;`
73			`*p = SOUTH;`
74			`} else if ( diff < (2* T1) + T2 ) { //left mesh edge`
75			`y = diff - (2 T1);`
76			`*x = 0;`
77			`*p = WEST;`
78			`} else { //right mesh edge`
79			`y = diff - (2 T1) -T2;`
80			`*x = T1-1;`
81			`*p = EAST;`
82			`}`
83			`}`
84
85			`}`
86
87
88			`unsigned int fmesh_addrencode(unsigned int id){`
89			`//input integer in,nx,nxw,nl,nyw,ny;`
90			`unsigned int y, x, p, addrencode;`
91			`fmesh_addrencod_sep(id, &x, &y, &p);`
92			`addrencode = ( p<<(nxw+nyw) \| (y<<nxw) \| x);`
93			`return addrencode;`
94			`}`
95
96
97			`unsigned int fmesh_endp_addr_decoder (unsigned int code){`
98			`unsigned int x, y, p;`
99			`mesh_tori_addr_sep(code,&x,&y,&p);`
100			`if(p== LOCAL) return ((yT1)+x)T3;`
101			`if(p > SOUTH) return ((yT1)+x)T3+(p-SOUTH);`
102			`if(p== NORTH) return ((T1T2T3) + x);`
103			`if(p== SOUTH) return ((T1T2T3) + T1 + x);`
104			`if(p== WEST ) return ((T1T2T3) + 2*T1 + y);`
105			`if(p== EAST ) return ((T1T2T3) + 2*T1 + T2 + y);`
106			`return 0;//should not reach here`
107			`}`
108
109
110
111
112
113
114			`unsigned int mesh_tori_endp_addr_decoder (unsigned int code){`
115			`unsigned int x, y, l;`
116			`mesh_tori_addr_sep(code,&x,&y,&l);`
117			`//if(code==0x1a) printf("code=%x,x=%u,y=%u,l=%u\n",code,x,y,l);`
118			`return ((yT1)+x)T3+l;`
119			`}`
120
121
122			`unsigned int endp_addr_encoder ( unsigned int id){`
123			`#if defined (IS_MESH) \|\| defined (IS_TORUS) \|\| defined (IS_LINE) \|\| defined (IS_RING )`
124			`return mesh_tori_addrencode(id);`
125			`#endif`
126			`return fmesh_addrencode(id);`
127			`}`
128
129
130			`unsigned int endp_addr_decoder (unsigned int code){`
131			`#if defined (IS_MESH) \|\| defined (IS_TORUS) \|\| defined (IS_LINE) \|\| defined (IS_RING )`
132			`return mesh_tori_endp_addr_decoder (code);`
133			`#endif`
134			`return fmesh_endp_addr_decoder (code);`
135			`}`
136
137
138
139
140			`void topology_connect_all_nodes (void){`
141
142
143			`unsigned int x,y,l;`
144			`#if defined (IS_LINE) \|\| defined (IS_RING )`
145			`#define R2R_CHANELS_MESH_TORI 2`
146			`for (x=0; x<T1; x=x+1) {`
147
148			`router1[x]->current_r_addr = x;`
149			`if(x < T1-1){// not_last_node`
150			`//assign router_chan_in[x][FORWARD] = router_chan_out [(x+1)][BACKWARD];`
151			`conect_r2r(1,x,FORWARD,1,(x+1),BACKWARD);`
152
153			`} else { //last_node`
154
155			`#if defined (IS_LINE) // : line_last_x`
156			`//assign router_chan_in[x][FORWARD]= {SMARTFLIT_CHANEL_w{1'b0}};`
157			`connect_r2gnd(1,x,FORWARD);`
158			`#else // : ring_last_x`
159			`//assign router_chan_in[x][FORWARD]= router_chan_out [0][BACKWARD];`
160			`conect_r2r(1,x,FORWARD,1,0,BACKWARD);`
161			`#endif`
162			`}`
163
164			`if(x>0){// :not_first_x`
165			`//assign router_chan_in[x][BACKWARD]= router_chan_out [(x-1)][FORWARD];`
166			`conect_r2r(1,x,BACKWARD,1,(x-1),FORWARD);`
167
168			`}else {// :first_x`
169			`#if defined (IS_LINE) // : line_first_x`
170			`//assign router_chan_in[x][BACKWARD]={SMARTFLIT_CHANEL_w{1'b0}};`
171			`connect_r2gnd(1,x,BACKWARD);`
172			`#else // : ring_first_x`
173			`//assign router_chan_in[x][BACKWARD]= router_chan_out [(NX-1)][FORWARD];`
174			`conect_r2r(1,x,BACKWARD,1,(T1-1),FORWARD);`
175			`#endif`
176			`}`
177
178			`// connect other local ports`
179			`for (l=0; l<T3; l=l+1) {// :locals`
180			`unsigned int ENDPID = endp_id(x,0,l);`
181			`unsigned int LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the }`
182			`//assign router_chan_in[x][LOCALP]= chan_in_all [ENDPID];`
183			`//assign chan_out_all [ENDPID] = router_chan_out[x][LOCALP];`
184			`connect_r2e(1,x,LOCALP,ENDPID);`
185			`er_addr [ENDPID] = x;`
186
187			`}// locals`
188			`}//x`
189
190			`#else // :mesh_torus`
191			`#define R2R_CHANELS_MESH_TORI 4`
192			`for (y=0; y<T2; y=y+1) {//: y_loop`
193			`for (x=0; x<T1; x=x+1) {// :x_loop`
194			`unsigned int R_ADDR = (y<<nxw) + x;`
195			`unsigned int ROUTER_NUM = (y * T1) + x;`
196			`//assign current_r_addr [ROUTER_NUM] = R_ADDR[RAw-1 :0];`
197			`router1[ROUTER_NUM]->current_r_addr = R_ADDR;`
198
199
200			`if(x < T1-1) {//: not_last_x`
201			//assign router_chan_in[`router_id(x,y)][EAST]= router_chan_out [`router_id(x+1,y)][WEST];
202			`conect_r2r(1,router_id(x,y),EAST,1,router_id(x+1,y),WEST);`
203
204			`}else {// :last_x`
205			`#if defined (IS_MESH) // :last_x_mesh`
206			// assign router_chan_in[`router_id(x,y)][EAST] = {SMARTFLIT_CHANEL_w{1'b0}};
207			`connect_r2gnd(1,router_id(x,y),EAST);`
208			`#elif defined (IS_TORUS) // : last_x_torus`
209			//assign router_chan_in[`router_id(x,y)][EAST] = router_chan_out [`router_id(0,y)][WEST];
210			`conect_r2r(1,router_id(x,y),EAST,1,router_id(0,y),WEST);`
211			`#elif defined (IS_FMESH) //:last_x_fmesh`
212			`//connect to endp`
213			`unsigned int EAST_ID = T1T2T3 + 2*T1 + T2 + y;`
214			`connect_r2e(1,router_id(x,y),EAST,EAST_ID);`
215			`er_addr [EAST_ID] = R_ADDR;`
216			`#endif//topology`
217			`}`
218
219
220			`if(y>0) {// : not_first_y`
221			//assign router_chan_in[`router_id(x,y)][NORTH] = router_chan_out [`router_id(x,(y-1))][SOUTH];
222			`conect_r2r(1,router_id(x,y),NORTH,1,router_id(x,(y-1)),SOUTH);`
223			`}else {// :first_y`
224			`#if defined (IS_MESH) // : first_y_mesh`
225			//assign router_chan_in[`router_id(x,y)][NORTH] = {SMARTFLIT_CHANEL_w{1'b0}};
226			`connect_r2gnd(1,router_id(x,y),NORTH);`
227			`#elif defined (IS_TORUS)// :first_y_torus`
228			//assign router_chan_in[`router_id(x,y)][NORTH] = router_chan_out [`router_id(x,(T2-1))][SOUTH];
229			`conect_r2r(1,router_id(x,y),NORTH,1,router_id(x,(T2-1)),SOUTH);`
230			`#elif defined (IS_FMESH) // :first_y_fmesh`
231			`unsigned int NORTH_ID = T1T2T3 + x;`
232			`connect_r2e(1,router_id(x,y),NORTH,NORTH_ID);`
233			`er_addr [NORTH_ID] = R_ADDR;`
234			`#endif//topology`
235			`}//y>0`
236
237
238			`if(x>0){// :not_first_x`
239			//assign router_chan_in[`router_id(x,y)][WEST] = router_chan_out [`router_id((x-1),y)][EAST];
240			`conect_r2r(1,router_id(x,y),WEST,1,router_id((x-1),y),EAST);`
241			`}else {// :first_x`
242
243			`#if defined (IS_MESH) // :first_x_mesh`
244			//assign router_chan_in[`router_id(x,y)][WEST] = {SMARTFLIT_CHANEL_w{1'b0}};
245			`connect_r2gnd(1,router_id(x,y),WEST);`
246
247			`#elif defined (IS_TORUS) // :first_x_torus`
248			//assign router_chan_in[`router_id(x,y)][WEST] = router_chan_out [`router_id((NX-1),y)][EAST] ;
249			`conect_r2r(1,router_id(x,y),WEST,1,router_id((T1-1),y),EAST);`
250			`#elif defined (IS_FMESH) // :first_x_fmesh`
251			`unsigned int WEST_ID = T1T2T3 + 2*T1 + y;`
252			`connect_r2e(1,router_id(x,y),WEST,WEST_ID);`
253			`er_addr [WEST_ID] = R_ADDR;`
254			`#endif//topology`
255			`}`
256
257			`if(y < T2-1) {// : firsty`
258			//assign router_chan_in[`router_id(x,y)][SOUTH] = router_chan_out [`router_id(x,(y+1))][NORTH];
259			`conect_r2r(1,router_id(x,y),SOUTH,1,router_id(x,(y+1)),NORTH);`
260			`}else {// : lasty`
261
262			`#if defined (IS_MESH) // :ly_mesh`
263
264			//assign router_chan_in[`router_id(x,y)][SOUTH]= {SMARTFLIT_CHANEL_w{1'b0}};
265			`connect_r2gnd(1,router_id(x,y),SOUTH);`
266
267			`#elif defined (IS_TORUS) // :ly_torus`
268			//assign router_chan_in[`router_id(x,y)][SOUTH]= router_chan_out [`router_id(x,0)][NORTH];
269			`conect_r2r(1,router_id(x,y),SOUTH,1,router_id(x,0),NORTH);`
270			`#elif defined (IS_FMESH) // :ly_Fmesh`
271			`unsigned int SOUTH_ID = T1T2T3 + T1 + x;`
272			`connect_r2e(1,router_id(x,y),SOUTH,SOUTH_ID);`
273			`er_addr [SOUTH_ID] = R_ADDR;`
274			`#endif//topology`
275			`}`
276
277
278			`// endpoint(s) connection`
279			`// connect other local ports`
280			`for (l=0; l<T3; l=l+1) {// :locals`
281			`unsigned int ENDPID = endp_id(x,y,l);`
282			`unsigned int LOCALP = (l==0) ? l : l + R2R_CHANELS_MESH_TORI; // first local port is connected to router port 0. The rest are connected at the }`
283
284			//assign router_chan_in [`router_id(x,y)][LOCALP] = chan_in_all [ENDPID];
285			//assign chan_out_all [ENDPID] = router_chan_out [`router_id(x,y)][LOCALP];
286			`//assign er_addr [ENDPID] = R_ADDR;`
287			`connect_r2e(1,router_id(x,y),LOCALP,ENDPID);`
288			`er_addr [ENDPID] = R_ADDR;`
289			`}// locals`
290
291			`}//y`
292			`}//x`
293			`#endif`
294
295
296			`}`
297
298
299			`void topology_init(void){`
300			`nxw=Log2(T1);`
301			`nyw=Log2(T2);`
302			`maskx = (0x1<<nxw)-1;`
303			`masky = (0x1<<nyw)-1;`
304			`}`
305
306
307			`unsigned int get_mah_distance ( unsigned int id1, unsigned int id2){`
308			`#if defined (IS_FMESH)`
309			`unsigned int x1,y1,p1,x2,y2,p2;`
310			`fmesh_addrencod_sep ( id1, &x1, &y1, &p1);`
311			`fmesh_addrencod_sep ( id2, &x2, &y2, &p2);`
312			`#else`
313			`unsigned int x1,y1,l1,x2,y2,l2;`
314			`mesh_tori_addrencod_sep(id1, &x1, &y1, &l1);`
315			`mesh_tori_addrencod_sep(id2, &x2, &y2, &l2);`
316			`#endif`
317
318			`unsigned int x_diff = (x1 > x2) ? (x1 - x2) : (x2 - x1);`
319			`unsigned int y_diff = (y1 > y2) ? (y1 - y2) : (y2 - y1);`
320			`return x_diff + y_diff;`
321			`}`
322
323
324			`#endif`