| /branches/sparc/kernel/arch/sparc64/include/sun4v/arch.h |
|---|
| 0,0 → 1,57 |
| /* |
| * Copyright (c) 2009 Pavel Rimsky |
| * 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. |
| */ |
| /** @addtogroup sparc64 |
| * @{ |
| */ |
| /** |
| * @file |
| * @brief Various sun4v-specific macros. |
| */ |
| #ifndef KERN_sparc64_sun4v_ARCH_H_ |
| #define KERN_sparc64_sun4v_ARCH_H_ |
| /* scratch pad registers ASI */ |
| #define ASI_SCRATCHPAD 0x20 |
| /* |
| * Assignment of scratchpad register virtual addresses. The same convention is |
| * used by both Linux and Solaris. |
| */ |
| /* register where the address of the MMU fault status area will be stored */ |
| #define SCRATCHPAD_MMU_FSA 0x00 |
| /* register where the CPUID will be stored */ |
| #define SCRATCHPAD_CPUID 0x08 |
| #endif |
| /** @} |
| */ |
| /branches/sparc/kernel/arch/sparc64/include/trap/sun4v/mmu.h |
|---|
| 40,6 → 40,8 |
| #include <arch/stack.h> |
| #include <arch/sun4v/regdef.h> |
| #include <arch/sun4v/arch.h> |
| #include <arch/sun4v/hypercall.h> |
| #include <arch/mm/sun4v/tlb.h> |
| #include <arch/mm/sun4v/mmu.h> |
| #include <arch/mm/sun4v/tte.h> |
| 57,23 → 59,52 |
| #ifdef __ASM__ |
| /* MMU fault status area data fault offset */ |
| #define FSA_DFA_OFFSET 0x48 |
| /* MMU fault status area data context */ |
| #define FSA_DFC_OFFSET 0x50 |
| /* offset of the target address within the TTE Data entry */ |
| #define TTE_DATA_TADDR_OFFSET 13 |
| .macro FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
| .endm |
| /* |
| * So far it is here only to process the trap which occurs when the kernel |
| * needs to access the bootinfo structure, which is placed in the bootloader |
| * memory (i.e. before address 0x400000). |
| * Handler of the Fast Data Access MMU Miss trap. If the trap occurred in the kernel |
| * (context 0), an identity mapping (with displacement) is installed. Otherwise |
| * a higher level service routine is called. |
| * |
| * TODO implement calling the higher level service routine |
| */ |
| .macro FAST_DATA_ACCESS_MMU_MISS_HANDLER tl |
| save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| set 0x8000, %o0 |
| set 0x0, %o1 |
| setx 0x80000000804087c3, %g1, %o2 |
| set 0x3, %o3 |
| ta 0x83 |
| restore %g0, 0, %g0 |
| retry |
| mov SCRATCHPAD_MMU_FSA, %g1 |
| ldxa [%g1] ASI_SCRATCHPAD, %g1 ! g1 <= RA of MMU fault status area |
| /* service by higher-level routine when context != 0 */ |
| add %g1, FSA_DFC_OFFSET, %g2 ! g2 <= RA of data fault context |
| ldxa [%g2] ASI_REAL, %g3 ! read the fault context |
| brnz %g3, 0f |
| nop |
| /* read the faulting address */ |
| add %g1, FSA_DFA_OFFSET, %g2 ! g2 <= RA of data fault address |
| ldxa [%g2] ASI_REAL, %g1 ! read the fault address |
| srlx %g1, TTE_DATA_TADDR_OFFSET, %g1 ! truncate it to page boundary |
| sllx %g1, TTE_DATA_TADDR_OFFSET, %g1 |
| /* exclude page number 0 from installing the identity mapping */ |
| brz %g1, 0f |
| nop |
| /* installing the identity does not fit into 32 instructions, call a separate routine */ |
| ba install_identity_mapping |
| nop |
| 0: ! TODO - call higher level service routine |
| .endm |
| .macro FAST_DATA_ACCESS_PROTECTION_HANDLER tl |
| /branches/sparc/kernel/arch/sparc64/include/mm/sun4v/mmu.h |
|---|
| 36,6 → 36,8 |
| #ifndef KERN_sparc64_sun4v_MMU_H_ |
| #define KERN_sparc64_sun4v_MMU_H_ |
| #define ASI_REAL 0x14 |
| #define VA_PRIMARY_CONTEXT_REG 0x8 /**< DMMU primary context registeri VA. */ |
| #define ASI_PRIMARY_CONTEXT_REG 0x21 /**< DMMU primary context register ASI. */ |
| /branches/sparc/kernel/arch/sparc64/include/mm/sun4v/tlb.h |
|---|
| 36,6 → 36,9 |
| #ifndef KERN_sparc64_sun4v_TLB_H_ |
| #define KERN_sparc64_sun4v_TLB_H_ |
| #define MMU_FSA_ALIGNMENT 64 |
| #define MMU_FSA_SIZE 128 |
| #ifndef __ASM__ |
| #include <arch/mm/sun4v/tte.h> |