| /branches/sparc/kernel/arch/sparc64/src/sun4v/start.S |
|---|
| 31,6 → 31,8 |
| #include <arch/stack.h> |
| #include <arch/sun4v/regdef.h> |
| #include <arch/sun4v/hypercall.h> |
| #include <arch/sun4v/arch.h> |
| #include <arch/sun4v/cpu.h> |
| #include <arch/mm/pagesize.h> |
| #include <arch/mm/sun4v/tte.h> |
| #include <arch/mm/sun4v/mmu.h> |
| 191,6 → 193,34 |
| stx %l6, [%l4 + %lo(physmem_base)] |
| /* |
| * Set CPUID. |
| */ |
| __HYPERCALL_FAST(CPU_MYID) |
| mov SCRATCHPAD_CPUID, %g1 |
| stxa %o1, [%g1] ASI_SCRATCHPAD |
| /* |
| * Set MMU fault status area for the current CPU. |
| */ |
| set mmu_fsas, %o0 ! o0 <= addr. of fault status areas array |
| add %o0, %l6, %o0 ! kernel address to real address |
| mulx %o1, MMU_FSA_SIZE, %g1 ! g1 <= offset of current CPU's fault status area |
| add %g1, %o0, %o0 ! o0 <= FSA of the current CPU |
| mov SCRATCHPAD_MMU_FSA, %g1 |
| stxa %o0, [%g1] ASI_SCRATCHPAD ! remember MMU fault status area to speed up miss handler |
| __HYPERCALL_FAST(MMU_FAULT_AREA_CONF) |
| /* |
| * Store a template of a TTE Data entry for kernel mappings. |
| * This template will be used from the kernel MMU miss handler. |
| */ |
| !TTE_DATA(0, %l5, %g2, %g3, %g1) |
| setx TTE_FLAGS | PAGESIZE_8K, %g2, %g1; \ |
| add %g1, %l5, %g1; \ |
| set kernel_8k_tlb_data_template, %g4 |
| stx %g1, [%g4] |
| /* |
| * So far, we have not touched the stack. |
| * It is a good idea to set the kernel stack to a known state now. |
| */ |
| 233,3 → 263,14 |
| .global physmem_base ! copy of the physical memory base address |
| physmem_base: |
| .quad 0 |
| .global kernel_8k_tlb_data_template |
| kernel_8k_tlb_data_template: |
| .quad 0 |
| /* MMU fault status areas for all CPUs */ |
| .align MMU_FSA_ALIGNMENT |
| .global mmu_fsas |
| mmu_fsas: |
| !.space (MMU_FSA_SIZE * MAX_NUM_STRANDS) |
| .space 8192 |
| /branches/sparc/kernel/arch/sparc64/src/trap/mmu.S |
|---|
| File deleted |
| /branches/sparc/kernel/arch/sparc64/src/trap/sun4v/mmu.S |
|---|
| 0,0 → 1,74 |
| # |
| # Copyright (c) 2006 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| /** |
| * @file |
| * @brief MMU trap handlers that do not fit into the trap table. |
| */ |
| .register %g2, #scratch |
| .register %g3, #scratch |
| .text |
| #include <arch/trap/sun4v/mmu.h> |
| #include <arch/trap/trap_table.h> |
| #include <arch/sun4v/regdef.h> |
| /* |
| * Install mapping for the kernel. The mapping obeys this formula: |
| * virtual address = real address + start of physical memory |
| * |
| * The routine expects the following values of registers: |
| * %g1 virtual address that has caused the miss |
| */ |
| .global install_identity_mapping |
| install_identity_mapping: |
| /* output registers mustn't be clobbered during the hypercall, SAVE is too risky */ |
| mov %o0, %g3 |
| mov %o1, %g4 |
| mov %o2, %g5 |
| mov %o3, %g6 |
| /* install mapping for kernel */ |
| mov %g1, %o0 |
| set 0, %o1 ! set context |
| setx kernel_8k_tlb_data_template, %g1, %g2 ! g2 <= template of TTE Data |
| ldx [%g2], %g2 ! read the TTE Data template |
| add %g2, %o0, %o2 ! template + VA = TTE Data entry |
| set MMU_FLAG_DTLB, %o3 ! map in DTLB only |
| ta MMU_MAP_ADDR |
| /* restore output registers */ |
| mov %g6, %o3 |
| mov %g5, %o2 |
| mov %g4, %o1 |
| mov %g3, %o0 |
| retry |
| /branches/sparc/kernel/arch/sparc64/src/trap/sun4v/trap_table.S |
|---|
| 540,7 → 540,7 |
| nop ! it will be easy to find |
| /* prevent unnecessary CLEANWIN exceptions */ |
| wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(0), %wstate |
| wrpr %g0, NWINDOWS - 1, %cleanwin |
| 1: |
| /* |
| * Prevent SAVE instruction from causing a spill exception. If the |
| /branches/sparc/kernel/arch/sparc64/src/mm/sun4v/tlb.c |
|---|
| 74,37 → 74,12 |
| }; |
| #endif |
| mmu_fault_status_area_t mmu_fault_status_areas[MAX_NUM_STRANDS] |
| __attribute__ ((aligned (64))); |
| /* |
| * Invalidate all non-locked DTLB and ITLB entries. |
| */ |
| void tlb_arch_init(void) |
| { |
| uint64_t errno; |
| /* |
| * Invalidate all non-locked DTLB and ITLB entries. |
| */ |
| tlb_invalidate_all(); |
| /* |
| * Set the MMU fault status area for the current CPU. |
| */ |
| uint64_t myid; |
| __hypercall_fast_ret1(0, 0, 0, 0, 0, CPU_MYID, &myid); |
| errno = __hypercall_fast1(MMU_FAULT_AREA_CONF, |
| KA2PA(&(mmu_fault_status_areas[myid]))); |
| if (errno != EOK) { |
| panic("Could not set MMU fault area for CPU %d, errno = %d.\n", |
| myid, errno); |
| } |
| printf("Setting MMU fault area for CPU %d at %x.\n", myid, KA2PA(&(mmu_fault_status_areas[myid]))); |
| #if 0 |
| /* |
| * Clear both SFSRs. |
| */ |
| dtlb_sfsr_write(0); |
| itlb_sfsr_write(0); |
| #endif |
| } |
| /** Insert privileged mapping into DMMU TLB. |