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[SPARC64]: Use ASI_SCRATCHPAD address 0x0 properly.

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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
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28
arch/sparc64/kernel/sun4v_ivec.S
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@@ -22,11 +22,8 @@ sun4v_cpu_mondo:
nop
/* Get &trap_block[smp_processor_id()] into %g3. */
__GET_CPUID(%g1)
sethi %hi(trap_block), %g3
sllx %g1, TRAP_BLOCK_SZ_SHIFT, %g7
or %g3, %lo(trap_block), %g3
add %g3, %g7, %g3
ldxa [%g0] ASI_SCRATCHPAD, %g3
sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
/* Get CPU mondo queue base phys address into %g7. */
ldx [%g3 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
@@ -74,11 +71,8 @@ sun4v_dev_mondo:
nop
/* Get &trap_block[smp_processor_id()] into %g3. */
__GET_CPUID(%g1)
sethi %hi(trap_block), %g3
sllx %g1, TRAP_BLOCK_SZ_SHIFT, %g7
or %g3, %lo(trap_block), %g3
add %g3, %g7, %g3
ldxa [%g0] ASI_SCRATCHPAD, %g3
sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
/* Get DEV mondo queue base phys address into %g5. */
ldx [%g3 + TRAP_PER_CPU_DEV_MONDO_PA], %g5
@@ -143,11 +137,8 @@ sun4v_res_mondo:
nop
/* Get &trap_block[smp_processor_id()] into %g3. */
__GET_CPUID(%g1)
sethi %hi(trap_block), %g3
sllx %g1, TRAP_BLOCK_SZ_SHIFT, %g7
or %g3, %lo(trap_block), %g3
add %g3, %g7, %g3
ldxa [%g0] ASI_SCRATCHPAD, %g3
sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
/* Get RES mondo queue base phys address into %g5. */
ldx [%g3 + TRAP_PER_CPU_RESUM_MONDO_PA], %g5
@@ -251,11 +242,8 @@ sun4v_nonres_mondo:
nop
/* Get &trap_block[smp_processor_id()] into %g3. */
__GET_CPUID(%g1)
sethi %hi(trap_block), %g3
sllx %g1, TRAP_BLOCK_SZ_SHIFT, %g7
or %g3, %lo(trap_block), %g3
add %g3, %g7, %g3
ldxa [%g0] ASI_SCRATCHPAD, %g3
sub %g3, TRAP_PER_CPU_FAULT_INFO, %g3
/* Get RES mondo queue base phys address into %g5. */
ldx [%g3 + TRAP_PER_CPU_NONRESUM_MONDO_PA], %g5