* written by Stefan Reinauer <stepan@openbios.org>
* (c) 2003-2004 by SuSE Linux AG
*
+ * (c) 2004 Tyan Computer
+ * 2004.12 yhlu added support to create support to create routing table dynamically.
+ * it also support 8 ways too. (8 ways ladder or 8 ways crossbar)
* This code is licensed under GPL.
*/
* don't want broadcast to be enabled for that node.
*/
-#define generate_temp_row(...) ((generate_row(__VA_ARGS__)&(~0x0f0000))|0x010000)
#define enable_bsp_routing() enable_routing(0)
#define NODE_HT(x) PCI_DEV(0,24+x,0)
return 0;
}
-static int link_connection(int src, int dest)
-{
- /* we generate the needed link information from the rows
- * by taking the Request Route of the according row.
- */
-
- return generate_row(src, dest, CONFIG_MAX_CPUS) & 0x0f;
-}
-
static void disable_probes(void)
{
/* disable read/write/fill probes for uniprocessor setup
{
pci_write_config32(NODE_HT(node), 0x40+(row<<2), value);
}
+static u32 get_row(u8 node, u8 row)
+{
+ return pci_read_config32(NODE_HT(node), 0x40+(row<<2));
+}
+
+static int link_connection(u8 src, u8 dest)
+{
+ /* we generate the needed link information from the rows
+ * by taking the Request Route of the according row.
+ */
+
+ return get_row(src, dest) & 0x0f;
+}
#if CONFIG_MAX_CPUS > 1
print_spew(" done.\r\n");
}
-static bool check_connection(u8 src, u8 dest, u8 link)
+static bool check_connection(u8 dest)
{
/* See if we have a valid connection to dest */
u32 val;
-
- /* Detect if the coherent HT link is connected. */
- val = pci_read_config32(NODE_HT(src), 0x98+link);
- if ( (val&0x17) != 0x03)
- return 0;
/* Verify that the coherent hypertransport link is
* established and actually working by reading the
return needs_reset;
}
-static void setup_row(u8 source, u8 dest, u8 nodes)
+static void setup_row_local(u8 source, u8 row) // source will be 7 when it is for temp use
{
- fill_row(source,dest,generate_row(source,dest,nodes));
+ unsigned linkn;
+ uint32_t val;
+ val = 1;
+ for(linkn = 0; linkn<3; linkn++) {
+ unsigned regpos;
+ uint32_t reg;
+ regpos = 0x98 + 0x20 * linkn;
+ reg = pci_read_config32(NODE_HT(source), regpos);
+ if ((reg & 0x17) != 3) continue; // it is not conherent or not connected
+ val |= 1<<(linkn+1);
+ }
+ val <<= 16;
+ val |= 0x0101;
+ fill_row(source,row, val);
}
-static void setup_temp_row(u8 source, u8 dest, u8 nodes)
+static void setup_row_direct(u8 source, u8 dest, u8 linkn)
{
- fill_row(source,7,generate_temp_row(source,dest,nodes));
+ uint32_t val;
+ val = 1<<16;
+ val |= 1<<(linkn+1);
+ val |= 1<<(linkn+1+8); //for direct connect response route should equal to request table
+ fill_row(source,dest, val);
+}
+#if CONFIG_MAX_CPUS>2
+static void setup_row_indirect(u8 source, u8 dest, u8 gateway)
+{
+ //for indirect connection, we need to compute the val from val_s(source, source), and val_g(source, gateway)
+ uint32_t val_s;
+ uint32_t val_g;
+ uint32_t val;
+#warning "FIXME is it the way to set the RESPONSE TABLE for indirect?"
+ val_s = get_row(source, source);
+ val_g = get_row(source, gateway);
+
+ val = val_g & 0xff;
+ val_s >>=16;
+ val_s &=0xfe;
+ if(val_s!=val) { // use another connect as response
+ val_s -= val;
+#warning "FIXME I don't know how to set BROADCAST TABLE for indirect, 1?"
+ val |= (1<<16) | (val_s<<8);
+ } else {
+ val = val_g; // all the same to gateway
+ }
+
+ fill_row(source, dest, val);
+
+}
+static void setup_row_indirect_group(const u8 *conn, int num)
+{
+ int i;
+ for(i=0; i<num; i+=3) {
+ setup_row_indirect(conn[i*3], conn[i*3+1],conn[i*3+2]);
+ }
+}
+#endif
+
+static void setup_temp_row(u8 source, u8 dest)
+{
+ // copy val from (source, dest) to (source,7)
+ fill_row(source,7,get_row(source,dest));
}
-static void setup_node(u8 node, u8 nodes)
+static void clear_temp_row(u8 source)
{
- u8 row;
- for(row=0; row<nodes; row++)
- setup_row(node, row, nodes);
+ fill_row(source, 7, DEFAULT);
}
-static void setup_remote_row(u8 source, u8 dest, u8 nodes)
+static void setup_remote_row_direct(u8 source, u8 dest, u8 linkn)
{
- fill_row(7, dest, generate_row(source, dest, nodes));
+ uint32_t val;
+ val = 1<<16;
+ val |= 1<<(linkn+1);
+ val |= 1<<(linkn+1+8); //for direct connect response route should equal to request table
+ fill_row(7,dest, val );
+}
+#if CONFIG_MAX_CPUS>2
+static void setup_remote_row_indirect(u8 source, u8 dest, u8 gateway)
+{
+ //for indirect connection, we need to compute the val from val_s(source, source), and val_g(source, gateway)
+ uint32_t val_s;
+ uint32_t val_g;
+ uint32_t val;
+
+ val_s = get_row(7, source);
+ val_g = get_row(7, gateway);
+
+ val = val_g & 0xff;
+ val_s >>=16;
+ val_s &=0xfe;
+ if(val_s!=val) { // use another connect as response
+ val_s -= val;
+ val |= 1 | (val_s<<8);
+ } else {
+ val = val_g; // all the same to gateway
+ }
+
+ fill_row(7, dest, val);
+
}
+#endif
-static void setup_remote_node(u8 node, u8 nodes)
+static void setup_remote_node(u8 node)
{
static const uint8_t pci_reg[] = {
0x44, 0x4c, 0x54, 0x5c, 0x64, 0x6c, 0x74, 0x7c,
0xc0, 0xc8, 0xd0, 0xd8,
0xe0, 0xe4, 0xe8, 0xec,
};
- uint8_t row;
int i;
print_spew("setup_remote_node: ");
- for(row=0; row<nodes; row++)
- setup_remote_row(node, row, nodes);
/* copy the default resource map from node 0 */
for(i = 0; i < sizeof(pci_reg)/sizeof(pci_reg[0]); i++) {
#endif
-#if CONFIG_MAX_CPUS > 2
-static void setup_temp_node(u8 node, u8 nodes)
-{
- u8 row;
- for(row=0; row<nodes; row++)
- fill_row(7,row,generate_row(node,row,nodes));
-}
-#endif
-
static void setup_uniprocessor(void)
{
print_spew("Enabling UP settings\r\n");
int needs_reset;
};
+#if CONFIG_MAX_CPUS > 2
+static int optimize_connection_group(const u8 *opt_conn, int num) {
+ int needs_reset = 0;
+ int i;
+ for(i=0; i<num; i+=2) {
+ needs_reset = optimize_connection(
+ NODE_HT(opt_conn[i*2]), 0x80 + link_to_register(link_connection(opt_conn[i*2],opt_conn[i*2+1])),
+ NODE_HT(opt_conn[i*2+1]), 0x80 + link_to_register(link_connection(opt_conn[i*2+1],opt_conn[i*2])) );
+ }
+ return needs_reset;
+}
+#endif
+
#if CONFIG_MAX_CPUS > 1
+static uint8_t get_linkn_first(uint8_t byte)
+{
+ if(byte & 0x02) { byte = 0; }
+ else if(byte & 0x04) { byte = 1; }
+ else if(byte & 0x08) { byte = 2; }
+ return byte;
+}
+static uint8_t get_linkn_last(uint8_t byte)
+{
+ if(byte & 0x02) { byte &= 0x0f; byte |= 0x00; }
+ if(byte & 0x04) { byte &= 0x0f; byte |= 0x10; }
+ if(byte & 0x08) { byte &= 0x0f; byte |= 0x20; }
+ return byte>>4;
+}
+static uint8_t get_linkn_last_count(uint8_t byte)
+{
+ byte &= 0x3f;
+ if(byte & 0x02) { byte &= 0xcf; byte |= 0x00; byte+=0x40; }
+ if(byte & 0x04) { byte &= 0xcf; byte |= 0x10; byte+=0x40; }
+ if(byte & 0x08) { byte &= 0xcf; byte |= 0x20; byte+=0x40; }
+ return byte>>4;
+}
+
static struct setup_smp_result setup_smp(void)
{
struct setup_smp_result result;
+ u8 byte;
+ uint32_t val;
result.nodes = 2;
result.needs_reset = 0;
print_spew("Enabling SMP settings\r\n");
- setup_row(0, 0, result.nodes);
+ setup_row_local(0, 0); // it will update the broadcast RT
+
+ val = get_row(0,0);
+ byte = (val>>16) & 0xfe;
+ if(byte<0x2) { // no coherent connection so get out.
+ result.nodes = 1;
+ return result;
+ }
+
/* Setup and check a temporary connection to node 1 */
- setup_temp_row(0, 1, result.nodes);
+ //find out linkn
+
+ byte = get_linkn_first(byte);
+ setup_row_direct(0,1, byte);
+ setup_temp_row(0, 1);
- if (!check_connection(0, 7, link_to_register(link_connection(0,1)))) {
+ if (!check_connection(7)) {
print_spew("No connection to Node 1.\r\n");
setup_uniprocessor(); /* and get up working */
result.nodes = 1;
}
/* We found 2 nodes so far */
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+ setup_row_local(7,1);
+ setup_remote_row_direct(1, 0, byte);
+
+#if CONFIG_MAX_CPUS>4
+ val = get_row(7,1);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_last_count(byte);
+ if((byte>>2)==3) { // Oh! we need to treat it as cpu2.
+ val = get_row(0,0);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_last(byte);
+ setup_row_direct(0,1, byte);
+ setup_temp_row(0, 1);
+
+ if (!check_connection(7)) {
+ print_spew("No connection to Node 1.\r\n");
+ setup_uniprocessor(); /* and get up working */
+ result.nodes = 1;
+ return result;
+ }
+
+ /* We found 2 nodes so far */
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+ setup_row_local(7,1);
+ setup_remote_row_direct(1, 0, byte);
+ }
+#endif
- setup_node(0, result.nodes); /* Node 1 is there. Setup Node 0 correctly */
- setup_remote_node(1, result.nodes); /* Setup the routes on the remote node */
+ setup_remote_node(1); /* Setup the regs on the remote node */
rename_temp_node(1); /* Rename Node 7 to Node 1 */
enable_routing(1); /* Enable routing on Node 1 */
+#if 0
+ // don't need and it is done by clear_dead_links
+ clear_temp_row(0);
+#endif
result.needs_reset = optimize_connection(
NODE_HT(0), 0x80 + link_to_register(link_connection(0,1)),
#if CONFIG_MAX_CPUS > 2
result.nodes=4;
-
+
/* Setup and check temporary connection from Node 0 to Node 2 */
- setup_temp_row(0,2, result.nodes);
+ val = get_row(0,0);
+ byte = ((val>>16) & 0xfe) - link_connection(0,1);
+ byte = get_linkn_last_count(byte);
+
+ //find out linkn
+ if((byte>>2)==0) { // We should have two coherent for 4p and above
+ result.nodes = 2;
+ return result;
+ }
+ byte &= 3; // bit [3,2] is count-1
+ setup_row_direct(0, 2, byte);
+ setup_temp_row(0, 2);
- if (!check_connection(0, 7, link_to_register(link_connection(0,2))) ) {
+ if (!check_connection(7) ) {
print_spew("No connection to Node 2.\r\n");
result.nodes = 2;
return result;
/* We found 3 nodes so far. Now setup a temporary
* connection from node 0 to node 3 via node 1
*/
-
- setup_temp_row(0,1, result.nodes); /* temp. link between nodes 0 and 1 */
- setup_temp_row(1,3, result.nodes); /* temp. link between nodes 1 and 3 */
-
- if (!check_connection(1, 7, link_to_register(link_connection(1,3)))) {
+ setup_temp_row(0,1); /* temp. link between nodes 0 and 1 */
+ /* here should setup_row_direct(1,3) at first, before that we should find the link in cpu 1 to 3*/
+ val = get_row(1,1);
+ byte = ((val>>16) & 0xfe) - link_connection(1,0);
+ byte = get_linkn_first(byte);
+ setup_row_direct(1,3,byte);
+ setup_temp_row(1,3); /* temp. link between nodes 1 and 3 */
+
+ if (!check_connection(7)) {
print_spew("No connection to Node 3.\r\n");
result.nodes = 2;
return result;
}
/* We found 4 nodes so far. Now setup all nodes for 4p */
+ /* for indirect we will use clockwise routing */
+ static const u8 conn4_1[] = {
+ 0,3,1,
+ 1,2,3,
+ };
- setup_node(0, result.nodes); /* The first 2 nodes are configured */
- setup_node(1, result.nodes); /* already. Just configure them for 4p */
+ setup_row_indirect_group(conn4_1, sizeof(conn4_1)/sizeof(conn4_1[0]));
- setup_temp_row(0,2, result.nodes);
- setup_temp_node(2, result.nodes);
- rename_temp_node(2);
- enable_routing(2);
+ setup_temp_row(0,2);
+
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+
+ setup_row_local(7,2);
+ setup_remote_row_direct(2, 0, byte);
+ setup_remote_node(2); /* Setup the regs on the remote node */
+
+ rename_temp_node(2); /* Rename Node 7 to Node 2 */
+ enable_routing(2); /* Enable routing on Node 2 */
+
- setup_temp_row(0,1, result.nodes);
- setup_temp_row(1,3, result.nodes);
- setup_temp_node(3, result.nodes);
+ setup_temp_row(0,1);
+ setup_temp_row(1,3);
+
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+
+ setup_row_local(7,3);
+ setup_remote_row_direct(3, 1, byte);
+ setup_remote_node(3); /* Setup the regs on the remote node */
+
rename_temp_node(3);
enable_routing(3); /* enable routing on node 3 (temp.) */
+
+ /* We need to init link between 2, and 3 direct link */
+ val = get_row(2,2);
+ byte = ((val>>16) & 0xfe) - link_connection(2,0);
+ byte = get_linkn_last_count(byte);
+#if CONFIG_MAX_CPUS>4
+ // We need to find out which link it so CPU3
+ // methods is try to access another 7 actully it is cpu4
+ if((byte>>2)==2) { // one to CPU3, one to cpu0, one to CPU4
+ setup_temp_row(0,2);
+ setup_row_direct(2, 4, byte);
+ setup_temp_row(2, 4);
+
+ if (check_connection(7)) { // so the link is to CPU4
+ //We need to re compute it
+ val = get_row(2,2);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_first(byte);
+ }
+ }
+#endif
+ setup_row_direct(2,3, byte & 0x3);
- /* optimize physical connections - by LYH */
- result.needs_reset = optimize_connection(
- NODE_HT(0), 0x80 + link_to_register(link_connection(0,2)),
- NODE_HT(2), 0x80 + link_to_register(link_connection(2,0)) );
+ val = get_row(3,3);
+ byte = ((val>>16) & 0xfe) - link_connection(3,1);
+ byte = get_linkn_last_count(byte);
+#if CONFIG_MAX_CPUS>4
+ // We need to find out which link it so CPU2
+ // methods is try to access another 7 actully it is cpu5
+ if((byte>>2)==2) { // one to CPU2, one to cpu1, one to CPU5
+ setup_temp_row(0,1);
+ setup_temp_row(1,3);
+ setup_row_direct(3, 5, byte);
+ setup_temp_row(3, 5);
+
+ if (check_connection(7)) { // so the link is to CPU5
+ //We need to re compute it
+ val = get_row(3, 3);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_first(byte);
+ }
+ }
+#endif
+ setup_row_direct(3,2, byte & 0x3);
- result.needs_reset = optimize_connection(
- NODE_HT(1), 0x80 + link_to_register(link_connection(1,3)),
- NODE_HT(3), 0x80 + link_to_register(link_connection(3,1)) );
+ /* Set indirect connection to 0, and 1 for indirect we will use clockwise routing */
+ static const u8 conn4_2[] = {
+ 2,1,0,
+ 3,0,2,
+ };
- result.needs_reset = optimize_connection(
- NODE_HT(2), 0x80 + link_to_register(link_connection(2,3)),
- NODE_HT(3), 0x80 + link_to_register(link_connection(3,2)) );
+ setup_row_indirect_group(conn4_2, sizeof(conn4_2)/sizeof(conn4_2[0]));
+
+ // We need to do sth to reverse work for setup_temp_row (0,1) (1,3)
+#if 0
+ // it will be done by clear_dead_links
+ clear_temp_row(0);
+ clear_temp_row(1);
+#endif
+
+ /* optimize physical connections - by LYH */
+ static const u8 opt_conn4[] = {
+ 0,2,
+ 1,3,
+ 2,3,
+ };
+
+ result.needs_reset = optimize_connection_group(opt_conn4, sizeof(opt_conn4)/sizeof(opt_conn4[0]));
#endif /* CONFIG_MAX_CPUS > 2 */
+#if CONFIG_MAX_CPUS > 4
+ result.nodes=6;
+
+ /* Setup and check temporary connection from Node 0 to Node 4 via 2 */
+ val = get_row(2,2);
+ byte = ((val>>16) & 0xfe) - link_connection(2,3) - link_connection(2,0);
+ byte = get_linkn_last_count(byte);
+
+ //find out linkn
+ if((byte>>2)==0) { // We should have two coherent for 4p and above
+ result.nodes = 4;
+ return result;
+ }
+ byte &= 3; // bit [3,2] is count-1
+ setup_row_direct(2, 4, byte);
+
+ /* Setup and check temporary connection from Node 0 to Node 4 through 2*/
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte,byte+2); /* temp. link between nodes 0 and 2 */
+ }
+
+ if (!check_connection(7) ) {
+ print_spew("No connection to Node 4.\r\n");
+ result.nodes = 4;
+ return result;
+ }
+
+ /* Setup and check temporary connection from Node 0 to Node 5 through 1, 3*/
+
+ val = get_row(3,3);
+ byte = ((val>>16) & 0xfe) - link_connection(3,2) - link_connection(3,1);
+ byte = get_linkn_last_count(byte);
+ //find out linkn
+ if((byte>>2)==0) { // We should have two coherent for 4p and above
+ result.nodes = 4;
+ return result;
+ }
+
+ byte &= 3; // bit [3,2] is count-1
+ setup_row_direct(3, 5, byte);
+
+ setup_temp_row(0,1); /* temp. link between nodes 0 and 1 */
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte+1,byte+3); /* temp. link between nodes 1 and 3 */
+ }
+
+ if (!check_connection(7)) {
+ print_spew("No connection to Node 5.\r\n");
+ result.nodes = 4;
+ return result;
+ }
+
+ /* We found 6 nodes so far. Now setup all nodes for 6p */
+ static const u8 conn6_1[] = {
+ 0, 4, 2,
+ 0, 5, 1,
+ 1, 4, 3,
+ 1, 5, 3,
+ 2, 5, 3,
+#if !CROSS_BAR_47_56
+ 3, 4, 5,
+#else
+ 3, 4, 2,
+#endif
+ };
+
+ setup_row_indirect_group(conn6_1, sizeof(conn6_1)/sizeof(conn6_1[0]));
+
+
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte,byte+2);
+ }
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+
+ setup_row_local(7,4);
+ setup_remote_row_direct(4, 2, byte);
+ setup_remote_node(4); /* Setup the regs on the remote node */
+ rename_temp_node(4);
+ enable_routing(4);
+
+ setup_temp_row(0,1);
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte+1,byte+3);
+ }
+
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+ setup_row_local(7,5);
+ setup_remote_row_direct(5, 3, byte);
+ setup_remote_node(5); /* Setup the regs on the remote node */
+
+ rename_temp_node(5);
+ enable_routing(5); /* enable routing on node 5 (temp.) */
+
+#if !CROSS_BAR_47_56
+ /* We need to init link between 4, and 5 direct link */
+ val = get_row(4,4);
+ byte = ((val>>16) & 0xfe) - link_connection(4,2);
+ byte = get_linkn_last_count(byte);
+#if CONFIG_MAX_CPUS>4
+ // We need to find out which link it so CPU5
+ // methods is try to access another 7 actully it is cpu6
+ if((byte>>2)==2) { // one to CPU5, one to cpu2, one to CPU6
+ setup_temp_row(0,2);
+ setup_temp_row(2,4);
+ setup_row_direct(4, 6, byte);
+ setup_temp_row(4, 6);
+
+ if (check_connection(7)) { // so the link is to CPU4
+ //We need to re compute it
+ val = get_row(4,4);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_first(byte);
+ }
+ }
+#endif
+ setup_row_direct(4,5, byte & 0x3);
+
+ val = get_row(5,5);
+ byte = ((val>>16) & 0xfe) - link_connection(5,3);
+ byte = get_linkn_last_count(byte);
+#if CONFIG_MAX_CPUS>4
+ // We need to find out which link it so CPU4
+ // methods is try to access another 7 actully it is cpu7
+ if((byte>>2)==2) { // one to CPU4, one to cpu3, one to CPU7
+ setup_temp_row(0,1);
+ setup_temp_row(1,3);
+ setup_temp_row(3,7);
+ setup_row_direct(5, 7, byte);
+ setup_temp_row(5, 7);
+
+ if (check_connection(7)) { // so the link is to CPU5
+ //We need to re compute it
+ val = get_row(5, 5);
+ byte = (val>>16) & 0xfe;
+ byte = get_linkn_first(byte);
+ }
+ }
+#endif
+ setup_row_direct(5,4, byte & 0x3);
+#endif // !CROSS_BAR_47_56
+
+ /* Set indirect connection to 0, to 3 for indirect we will use clockwise routing */
+ static const u8 conn6_2[] = {
+#if !CROSS_BAR_47_56
+ 4, 0, 2,
+ 4, 1, 2,
+ 4, 3, 2,
+ 5, 0, 4,
+ 5, 2, 4,
+ 5, 1, 3,
+#else
+
+ 4, 0, 2,
+ 4, 1, 2,
+ 4, 3, 2,
+ 4, 5, 2,
+ 5, 0, 3,
+ 5, 2, 3,
+ 5, 1, 3,
+ 5, 4, 3,
+#endif
+ };
+
+ setup_row_indirect_group(conn6_2, sizeof(conn6_2)/sizeof(conn6_2[0]));
+#if 0
+ // We need to do sth about reverse about setup_temp_row (0,1), (2,4), (1, 3), (3,5)
+ // It will be done by clear_dead_links
+ for(byte=0; byte<4; byte++) {
+ clear_temp_row(byte);
+ }
+#endif
+
+ /* optimize physical connections - by LYH */
+ static const uint8_t opt_conn6[] ={
+ 2, 4,
+ 3, 5,
+#if !CROSS_BAR_47_56
+ 4, 5,
+#endif
+ };
+ result.needs_reset = optimize_connection_group(opt_conn6, sizeof(opt_conn6)/sizeof(opt_conn6[0]));
+
+
+#endif /* CONFIG_MAX_CPUS > 4 */
+
+#if CONFIG_MAX_CPUS >6
+ result.nodes=8;
+
+ /* Setup and check temporary connection from Node 0 to Node 6 via 2 and 4 to 7 */
+ val = get_row(4,4);
+#if !CROSS_BAR_47_56
+ byte = ((val>>16) & 0xfe) - link_connection(4,5) - link_connection(4,2);
+#else
+ byte = ((val>>16) & 0xfe) - link_connection(4,2);
+#endif
+ byte = get_linkn_last_count(byte); // Max link to 6
+ if((byte>>2)==0) { // We should have two coherent for 8p and above
+ result.nodes = 6;
+ return result;
+ }
+ byte &= 3; // bit [3,2] is count-1
+ setup_row_direct(4, 6, byte);
+
+ /* Setup and check temporary connection from Node 0 to Node 6 through 2, and 4*/
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte,byte+2); /* temp. link between nodes 0 and 2 */
+ }
+
+ if (!check_connection(7) ) {
+ print_spew("No connection to Node 6.\r\n");
+ result.nodes = 6;
+ return result;
+ }
+#if !CROSS_BAR_47_56
+ /* Setup and check temporary connection from Node 0 to Node 5 through 1, 3, 5*/
+
+ val = get_row(5,5);
+ byte = ((val>>16) & 0xfe) - link_connection(5,4) - link_connection(5,3);
+ byte = get_linkn_first(byte);
+ setup_row_direct(5, 7, byte);
+
+ setup_temp_row(0,1); /* temp. link between nodes 0 and 1 */
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte+1,byte+3); /* temp. link between nodes 1 and 3 */
+ }
+#else
+ val = get_row(4,4);
+ byte = ((val>>16) & 0xfe) - link_connection(4,2) ;
+ byte = get_linkn_first(byte); // min link to 7
+ setup_row_direct(4, 7, byte);
+
+ /* Setup and check temporary connection from Node 0 to Node 7 through 2, and 4*/
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte,byte+2); /* temp. link between nodes 0 and 2 */
+ }
+ setup_temp_row(4, 7);
+
+#endif
+
+ if (!check_connection(7)) {
+ print_spew("No connection to Node 7.\r\n");
+ result.nodes = 6;
+ return result;
+ }
+
+
+ /* We found 8 nodes so far. Now setup all nodes for 8p */
+ static const u8 conn8_1[] = {
+#if !CROSS_BAR_47_56
+ 0, 6, 2,
+// 0, 7, 1,
+ 1, 6, 3,
+// 1, 7, 3,
+ 2, 6, 4,
+// 2, 7, 3,
+ 3, 6, 5,
+// 3, 7, 5,
+// 4, 7, 5,
+#else
+ 0, 6, 2,
+// 0, 7, 2,
+ 1, 6, 3,
+// 1, 7, 3,
+ 2, 6, 4,
+// 2, 7, 4,
+ 3, 6, 5,
+// 3, 7, 5,
+#endif
+ };
+
+ setup_row_indirect_group(conn8_1,sizeof(conn8_1)/sizeof(conn8_1[0]));
+
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte,byte+2);
+ }
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+
+ setup_row_local(7,6);
+ setup_remote_row_direct(6, 4, byte);
+ setup_remote_node(6); /* Setup the regs on the remote node */
+ rename_temp_node(6);
+ enable_routing(6);
+
+#if !CROSS_BAR_47_56
+ setup_temp_row(0,1);
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte+1,byte+3);
+ }
+
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+ setup_row_local(7,7);
+ setup_remote_row_direct(7, 5, byte);
+
+#else
+ for(byte=0; byte<4; byte+=2) {
+ setup_temp_row(byte,byte+2);
+ }
+ setup_temp_row(4,7);
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+
+ setup_row_local(7,7);
+ setup_remote_row_direct(7, 4, byte);
+ // till now 4-7, 7-4 done.
+#endif
+ setup_remote_node(7); /* Setup the regs on the remote node */
+// rename_temp_node(7);
+ enable_routing(7); /* enable routing on node 5 (temp.) */
+
+#if CROSS_BAR_47_56
+ //here init 5, 6 and 5, 7
+ /* Setup and check temporary connection from Node 0 to Node 5 through 1, 3, 5*/
+
+ val = get_row(5,5);
+ byte = ((val>>16) & 0xfe) - link_connection(5,3);
+ byte = get_linkn_last(byte);
+ setup_row_direct(5, 7, byte);
+
+ setup_temp_row(0,1); /* temp. link between nodes 0 and 1 */
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte+1,byte+3); /* temp. link between nodes 1 and 3 */
+ }
+
+ if (!check_connection(7)) {
+ // We need to recompute link to 7
+ val = get_row(5,5);
+ byte = ((val>>16) & 0xfe) - link_connection(5,3);
+ byte = get_linkn_first(byte);
+
+ byte &= 3; // bit [3,2] is count-1
+ setup_row_direct(5, 7, byte);
+#if 0
+ setup_temp_row(0,1); /* temp. link between nodes 0 and 1 */
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte+1,byte+3); /* temp. link between nodes 1 and 3 */
+ }
+#else
+ setup_temp_row(5,7);
+#endif
+ check_connection(7);
+ }
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+// setup_row_local(7,7);
+ setup_remote_row_direct(7, 5, byte);
+ //Till now 57, 75 done
+
+ //init 5,6
+ val = get_row(5,5);
+ byte = ((val>>16) & 0xfe) - link_connection(5,3) - link_connection(5,7);
+ byte = get_linkn_first(byte);
+ setup_row_direct(5, 6, byte);
+
+
+ val = get_row(6,6);
+ byte = ((val>>16) & 0xfe) - link_connection(6,4);
+ byte = get_linkn_last(byte);
+ setup_row_direct(6, 7, byte);
+
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte,byte+2); /* temp. link between nodes 0 and 2 */
+ }
+ setup_temp_row(6,7);
+
+ if (!check_connection(7)) {
+ // We need to recompute link to 7
+ val = get_row(6,6);
+ byte = ((val>>16) & 0xfe) - link_connection(6,4);
+ byte = get_linkn_first(byte);
+
+ setup_row_direct(6, 7, byte);
+#if 0
+ for(byte=0; byte<6; byte+=2) {
+ setup_temp_row(byte,byte+2); /* temp. link between nodes 0 and 2 */
+ }
+#endif
+ setup_temp_row(6,7);
+ check_connection(7);
+ }
+ val = pci_read_config32(NODE_HT(7), 0x6c);
+ byte = (val>2) & 0x3; // get default link on 7 to 0
+// setup_row_local(7,7);
+ setup_remote_row_direct(7, 6, byte);
+ //Till now 67, 76 done
+
+ //init 6,5
+ val = get_row(6,6);
+ byte = ((val>>16) & 0xfe) - link_connection(6,4) - link_connection(6,7);
+ byte = get_linkn_first(byte);
+ setup_row_direct(6, 5, byte);
+
+#endif
+
+#if !CROSS_BAR_47_56
+ /* We need to init link between 6, and 7 direct link */
+ val = get_row(6,6);
+ byte = ((val>>16) & 0xfe) - link_connection(6,4);
+ byte = get_linkn_first(byte);
+ setup_row_direct(6,7, byte & 0x3);
+
+ val = get_row(7,7);
+ byte = ((val>>16) & 0xfe) - link_connection(7,5);
+ byte = get_linkn_first(byte);
+ setup_row_direct(7,6, byte & 0x3);
+#endif
+
+ /* Set indirect connection to 0, to 3 for indirect we will use clockwise routing */
+ static const u8 conn8_2[] = {
+#if !CROSS_BAR_47_56
+ 0, 7, 1, // restore it
+ 1, 7, 3,
+ 2, 7, 3,
+ 3, 7, 5,
+ 4, 7, 5,
+
+ 6, 0, 4,
+ 6, 1, 4,
+ 6, 2, 4,
+ 6, 3, 4,
+ 6, 5, 4,
+ 7, 0, 6,
+ 7, 1, 5,
+ 7, 2, 6,
+ 7, 3, 5,
+ 7, 4, 6,
+#else
+ 0, 7, 2, // restore it
+ 1, 7, 3,
+ 2, 7, 4,
+ 3, 7, 5,
+
+ 6, 0, 4,
+ 6, 1, 4,
+ 6, 2, 4,
+ 6, 3, 4,
+ 7, 0, 4,
+ 7, 1, 5,
+ 7, 2, 4,
+ 7, 3, 5,
+ 4, 5, 7,
+ 5, 4, 6,
+#endif
+ };
+
+ setup_row_indirect_group(conn8_2, sizeof(conn8_2)/sizeof(conn8_2[0]));
+
+ static const uint8_t opt_conn8[] ={
+ 4, 6,
+#if CROSS_BAR_47_56
+ 4, 7,
+ 5, 6,
+#endif
+ 5, 7,
+ 6, 7,
+ };
+ /* optimize physical connections - by LYH */
+ result.needs_reset = optimize_connection_group(opt_conn8, sizeof(opt_conn6)/sizeof(opt_conn8[0]));
+
+#endif /* CONFIG_MAX_CPUS > 6 */
+
print_debug_hex8(result.nodes);
print_debug(" nodes initialized.\r\n");
return result;
{
int last_row;
int node, row;
+#if CONFIG_MAX_CPUS>6
+ if(nodes==8) return;// don't touch (7,7)
+#endif
last_row = nodes;
if (nodes == 1) {
last_row = 0;
clear_dead_routes(result.nodes);
if (result.nodes == 1) {
setup_uniprocessor();
- }
+ }
coherent_ht_finalize(result.nodes);
result.needs_reset = apply_cpu_errata_fixes(result.nodes, result.needs_reset);
result.needs_reset = optimize_link_read_pointers(result.nodes, result.needs_reset);
projects / coreboot.git / commitdiff