diff options
Diffstat (limited to 'src/northbridge/amd/amdk8')
| -rw-r--r-- | src/northbridge/amd/amdk8/coherent_ht.c | 83 |
1 files changed, 49 insertions, 34 deletions
diff --git a/src/northbridge/amd/amdk8/coherent_ht.c b/src/northbridge/amd/amdk8/coherent_ht.c index b8863998f6..baff9deb1f 100644 --- a/src/northbridge/amd/amdk8/coherent_ht.c +++ b/src/northbridge/amd/amdk8/coherent_ht.c @@ -20,33 +20,6 @@ #include "arch/romcc_io.h" #include "amdk8.h" -/* - * Until we have a completely dynamic setup we want - * to be able to map different cpu graphs. - */ - -#define UP 0x00 -#define ACROSS 0x20 -#define DOWN 0x40 - -/* - * set some default values. These are used if they are not - * differently defined in the motherboard's auto.c file. - * See src/mainboard/amd/quartet/auto.c for an example. - */ - -#ifndef CONNECTION_0_1 -#define CONNECTION_0_1 ACROSS -#endif - -#ifndef CONNECTION_0_2 -#define CONNECTION_0_2 UP -#endif - -#ifndef CONNECTION_1_3 -#define CONNECTION_1_3 UP -#endif - /* when generating a temporary row configuration we * don't want broadcast to be enabled for that node. */ @@ -68,6 +41,34 @@ typedef int bool; #define TRUE (-1) #define FALSE (0) +static u8 link_to_register(int ldt) +{ + /* + * [ 0: 3] Request Route + * [0] Route to this node + * [1] Route to Link 0 + * [2] Route to Link 1 + * [3] Route to Link 2 + */ + + if (ldt&0x08) return 0x40; + if (ldt&0x04) return 0x20; + if (ldt&0x02) return 0x00; + + /* we should never get here */ + print_debug("Unknown Link\n"); + 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 @@ -367,7 +368,7 @@ static struct setup_smp_result setup_smp(void) /* Setup and check a temporary connection to node 1 */ setup_temp_row(0, 1, result.cpus); - if (!check_connection(0, 7, CONNECTION_0_1)) { + if (!check_connection(0, 7, link_to_register(link_connection(0,1)))) { print_debug("No connection to Node 1.\r\n"); clear_temp_row(0); /* delete temp connection */ setup_uniprocessor(); /* and get up working */ @@ -376,8 +377,7 @@ static struct setup_smp_result setup_smp(void) } /* We found 2 nodes so far */ - result.needs_reset = - optimize_connection(NODE_HT(0), 0x80 + CONNECTION_0_1, NODE_HT(7), 0x80 + CONNECTION_0_1); + setup_node(0, result.cpus); /* Node 1 is there. Setup Node 0 correctly */ setup_remote_node(1, result.cpus); /* Setup the routes on the remote node */ rename_temp_node(1); /* Rename Node 7 to Node 1 */ @@ -385,13 +385,17 @@ static struct setup_smp_result setup_smp(void) clear_temp_row(0); /* delete temporary connection */ + result.needs_reset = optimize_connection( + NODE_HT(0), 0x80 + link_to_register(link_connection(0,1)), + NODE_HT(1), 0x80 + link_to_register(link_connection(1,0)) ); + #if CONFIG_MAX_CPUS > 2 result.cpus=4; /* Setup and check temporary connection from Node 0 to Node 2 */ setup_temp_row(0,2, result.cpus); - if (!check_connection(0, 7, CONNECTION_0_2)) { + if (!check_connection(0, 7, link_to_register(link_connection(0,2))) ) { print_debug("No connection to Node 2.\r\n"); clear_temp_row(0); /* delete temp connection */ result.cpus = 2; @@ -405,7 +409,7 @@ static struct setup_smp_result setup_smp(void) setup_temp_row(0,1, result.cpus); /* temp. link between nodes 0 and 1 */ setup_temp_row(1,3, result.cpus); /* temp. link between nodes 1 and 3 */ - if (!check_connection(1, 7, CONNECTION_1_3)) { + if (!check_connection(1, 7, link_to_register(link_connection(1,3)))) { print_debug("No connection to Node 3.\r\n"); clear_temp_row(0); /* delete temp connection */ clear_temp_row(1); /* delete temp connection */ @@ -413,8 +417,6 @@ static struct setup_smp_result setup_smp(void) return result; } -#warning "FIXME optimize the physical connections" - /* We found 4 nodes so far. Now setup all nodes for 4p */ setup_node(0, result.cpus); /* The first 2 nodes are configured */ @@ -436,6 +438,19 @@ static struct setup_smp_result setup_smp(void) clear_temp_row(2); clear_temp_row(3); + /* 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)) ); + + 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)) ); + + 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)) ); + #endif print_debug_hex8(result.cpus); print_debug(" nodes initialized.\r\n"); |