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add code to initialize (i)RCCE and to test RCCE

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This commit is contained in:
Stefan Lankes 2011-04-19 07:17:51 -07:00
parent f556608010
commit 622b403f08
2 changed files with 44 additions and 10 deletions
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52
arch/x86/scc/scc_init.c
View file

@ -17,7 +17,8 @@
#include <metalsvm/processor.h>
#include <metalsvm/errno.h>
#include <asm/io.h>
#include <asm/RCCE_lib.h>
#include <asm/RCCE.h>
#include <asm/iRCCE.h>
#include <asm/SCC_API.h>
#ifdef CONFIG_ROCKCREEK
@ -35,6 +36,9 @@ bootinfo_t* bootinfo = (bootinfo_t*) SCC_BOOTINFO;
static int scc_clear(void)
{
int tmp, x, y, z, offset;
// Initialize API
InitAPI(0);
// Find out who I am...
tmp=ReadConfigReg(CRB_OWN+MYTILEID);
@ -57,6 +61,9 @@ static int scc_clear(void)
// Clear test&set register write. Next read-access will read "1" (lock granted).
SetConfigReg(CRB_ADDR(x,y)+((z)?LOCK1:LOCK0), 1);
// frees Message Passing Buffer
MPBunalloc(&MPB);
return 0;
}
@ -64,31 +71,58 @@ int scc_init(void)
{
int num_ranks;
int i, my_rank;
uint64_t start, end, ticks, freq = 533;
uint32_t cr4, msg = 0;
kputs("Initialize Rock Creek!\n");
/* Enable Messagepassing in CR4 */
cr4 = read_cr4();
cr4 = cr4 | _CR4_MPE;
write_cr4(cr4);
kprintf("Initialize Rock Creek!\n");
kprintf("address of the initrd: 0x%x\n", bootinfo->addr);
kprintf("size of the initrd: %d\n", bootinfo->size);
kprintf("rcce argc = %d\n", bootinfo->argc);
for(i=0; i<bootinfo->argc; i++)
kprintf("rcce argv[%d] = %s\n", i, bootinfo->argv[i]);
if (bootinfo->argc >= 3)
freq = atoi(bootinfo->argv[2]);
kputs("Reset SCC!\n");
scc_clear();
kputs("Wait some time...\n");
mb();
start = rdtsc();
do {
mb();
end = rdtsc();
ticks = end > start ? end - start : start - end;
} while(ticks*TIMER_FREQ < 1000ULL*freq*1000000ULL);
kprintf("ticks %llu\n", ticks);
if (RCCE_init(&bootinfo->argc, &bootinfo->argv) != RCCE_SUCCESS)
return -ENODEV;
if (iRCCE_init() != iRCCE_SUCCESS)
return -ENODEV;
my_rank = RCCE_ue();
num_ranks = RCCE_num_ues();
kprintf("Got rank %d of %d ranks\n", my_rank, num_ranks);
/* Enable Messagepassing in CR4 */
uint32_t cr4 = read_cr4();
cr4 = cr4 | _CR4_MPE;
write_cr4(cr4);
i = ReadConfigReg(CRB_OWN+GLCFG0);
kprintf("glcfg0 0x%x\n", i);
/* synchronize before starting MetalSVM: */
//RCCE_barrier(&RCCE_COMM_WORLD);
RCCE_barrier(&RCCE_COMM_WORLD);
kputs("RCCE test...\t");
if (my_rank == 0)
msg = 0x4711;
if (RCCE_bcast((char*) &msg, sizeof(msg), 0, RCCE_COMM_WORLD) == RCCE_SUCCESS)
kprintf("successfull! (0x%x)\n", msg);
else
kprintf("failed! (0x%x)\n", msg);
kputs("Now, the SCC is initialized!\n");

2
include/metalsvm/config.h.example
View file

@ -58,7 +58,7 @@ extern "C" {
// RCCE specific flags
#define SCC
#define MS_BAREMETAL
#define GORY
//#define GORY
//#define SHMADD
//#define SHMADD_CACHEABLE
/* default values for 16 GB system */