lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[SPARC64]: Use ASI_SCRATCHPAD address 0x0 properly.

Browse Source 
This is where the virtual address of the fault status
area belongs.

To set it up we don't make a hypervisor call, instead
we call OBP's SUNW,set-trap-table with the real address
of the fault status area as the second argument.  And
right before that call we write the virtual address into
ASI_SCRATCHPAD vaddr 0x0.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-10 15:39:51 -08:00
parent 1839794464
commit 12eaa328f9
9 changed files with 144 additions and 192 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
include/asm-sparc64/cpudata.h
View File

@ -156,13 +156,16 @@ extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
nop; \
.previous;
/* Clobbers TMP, current address space PGD phys address into DEST. */
#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
__GET_CPUID(TMP) \
sethi %hi(trap_block), DEST; \
sllx TMP, TRAP_BLOCK_SZ_SHIFT, TMP; \
or DEST, %lo(trap_block), DEST; \
add DEST, TMP, DEST; \
/* Clobbers TMP, current address space PGD phys address into DEST. */
#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
@ -175,11 +178,8 @@ extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
/* Clobbers TMP, loads DEST with current thread info pointer. */
#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
__GET_CPUID(TMP) \
sethi %hi(trap_block), DEST; \
sllx TMP, TRAP_BLOCK_SZ_SHIFT, TMP; \
or DEST, %lo(trap_block), DEST; \
ldx [DEST + TMP], DEST;
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
/* Given the current thread info pointer in THR, load the per-cpu
* area base of the current processor into DEST. REG1, REG2, and REG3 are
@ -201,13 +201,13 @@ extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
#else
#define __GET_CPUID(REG) \
mov 0, REG;
#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
sethi %hi(trap_block), DEST; \
or DEST, %lo(trap_block), DEST; \
/* Uniprocessor versions, we know the cpuid is zero. */
#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
sethi %hi(trap_block), DEST; \
or DEST, %lo(trap_block), DEST; \
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
#define TRAP_LOAD_IRQ_WORK(DEST, TMP) \
@ -215,8 +215,8 @@ extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
or DEST, %lo(__irq_work), DEST;
#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
sethi %hi(trap_block), DEST; \
ldx [DEST + %lo(trap_block)], DEST;
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
/* No per-cpu areas on uniprocessor, so no need to load DEST. */
#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3)