| 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 |