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map off-die shared memory in the kernel address space

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- plus example code
This commit is contained in:
Stefan Lankes 2011-06-27 15:12:58 -07:00
parent 499fc1192f
commit 7b2dfe4497
2 changed files with 14 additions and 2 deletions
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5
arch/x86/scc/RCCE_admin.c
View file

@ -26,6 +26,7 @@
//
#include <metalsvm/stddef.h>
#include <asm/page.h>
#ifdef CONFIG_ROCKCREEK
@ -335,13 +336,13 @@ int RCCE_init(
RCCE_malloc_init(RCCE_comm_buffer[RCCE_IAM],RCCE_BUFF_SIZE);
#ifdef SHMADD
RCCE_shmalloc_init(RC_SHM_BUFFER_START()+RCCE_SHM_BUFFER_offset ,RCCE_SHM_SIZE_MAX);
RCCE_shmalloc_init(map_region(NULL, RC_SHM_BUFFER_START()+RCCE_SHM_BUFFER_offset, RCCE_SHM_SIZE_MAX/PAGE_SIZE, MAP_KERNEL_SPACE|MAP_NO_CACHE), RCCE_SHM_SIZE_MAX);
#ifdef SHMDBG
kprintf("\n%d:%s:%d: RCCE_SHM_BUFFER_offset, RCCE_SHM_SIZE_MAX: %x %x\n", RCCE_IAM,
__FILE__,__LINE__,RCCE_SHM_BUFFER_offset ,RCCE_SHM_SIZE_MAX);
#endif
#else
RCCE_shmalloc_init(RC_SHM_BUFFER_START(),RCCE_SHM_SIZE_MAX);
RCCE_shmalloc_init(map_region(NULL, RC_SHM_BUFFER_START(), RCCE_SHM_SIZE_MAX/PAGE_SIZE, MAP_KERNEL_SPACE|MAP_NO_CACHE), RCCE_SHM_SIZE_MAX);
#endif
// initialize the (global) flag bookkeeping data structure

11
arch/x86/scc/icc.c
View file

@ -142,6 +142,17 @@ int icc_init(void)
kprintf("failed! (0x%x)\n", msg);
#endif
#if 0
char* str = RCCE_shmalloc(128);
if (my_ue == 1) {
memset(str, 0x00, 128);
strcpy(str, "Hello RCCE_shmalloc\n");
}
RCCE_barrier(&RCCE_COMM_WORLD);
kprintf("RCCE_shmalloc test: %s\n", str);
RCCE_shfree(str);
#endif
// reset INTR/LINT0 flag
z = Z_PID(RC_COREID[my_ue]);
tmp=ReadConfigReg(CRB_OWN + (z==0 ? GLCFG0 : GLCFG1));