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6fc76aa9ad
The code to search for a matching BAT for a virtual address is somewhat longwinded and awkward. In particular, it relies on seperate size and validity information being returned from the hash32_bat_size() function (and 601 specific variant). We simplify this by having hash32_bat_size() return instead a mask of the virtual address bits to match, and 0 for invalid (since a BAT can never match the entire address space). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
#if !defined (__MMU_HASH32_H__)
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#define __MMU_HASH32_H__
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#ifndef CONFIG_USER_ONLY
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hwaddr get_pteg_offset32(CPUPPCState *env, hwaddr hash);
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hwaddr ppc_hash32_get_phys_page_debug(CPUPPCState *env, target_ulong addr);
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int ppc_hash32_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
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int mmu_idx);
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/*
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* Segment register definitions
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*/
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#define SR32_T 0x80000000
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#define SR32_KS 0x40000000
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#define SR32_KP 0x20000000
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#define SR32_NX 0x10000000
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#define SR32_VSID 0x00ffffff
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/*
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* Block Address Translation (BAT) definitions
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*/
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#define BATU32_BEPI 0xfffe0000
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#define BATU32_BL 0x00001ffc
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#define BATU32_VS 0x00000002
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#define BATU32_VP 0x00000001
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#define BATL32_BRPN 0xfffe0000
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#define BATL32_WIMG 0x00000078
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#define BATL32_PP 0x00000003
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/* PowerPC 601 has slightly different BAT registers */
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#define BATU32_601_KS 0x00000008
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#define BATU32_601_KP 0x00000004
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#define BATU32_601_PP 0x00000003
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#define BATL32_601_V 0x00000040
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#define BATL32_601_BL 0x0000003f
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/*
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* Hash page table definitions
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*/
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#define HPTES_PER_GROUP 8
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#define HASH_PTE_SIZE_32 8
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#define HASH_PTEG_SIZE_32 (HASH_PTE_SIZE_32 * HPTES_PER_GROUP)
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#define HPTE32_V_VALID 0x80000000
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#define HPTE32_V_VSID 0x7fffff80
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#define HPTE32_V_SECONDARY 0x00000040
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#define HPTE32_V_API 0x0000003f
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#define HPTE32_V_COMPARE(x, y) (!(((x) ^ (y)) & 0x7fffffbf))
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#define HPTE32_R_RPN 0xfffff000
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#define HPTE32_R_R 0x00000100
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#define HPTE32_R_C 0x00000080
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#define HPTE32_R_W 0x00000040
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#define HPTE32_R_I 0x00000020
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#define HPTE32_R_M 0x00000010
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#define HPTE32_R_G 0x00000008
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#define HPTE32_R_WIMG 0x00000078
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#define HPTE32_R_PP 0x00000003
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static inline target_ulong ppc_hash32_load_hpte0(CPUPPCState *env,
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hwaddr pte_offset)
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{
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assert(!env->external_htab); /* Not supported on 32-bit for now */
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return ldl_phys(env->htab_base + pte_offset);
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}
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static inline target_ulong ppc_hash32_load_hpte1(CPUPPCState *env,
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hwaddr pte_offset)
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{
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assert(!env->external_htab); /* Not supported on 32-bit for now */
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return ldl_phys(env->htab_base + pte_offset + HASH_PTE_SIZE_32/2);
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}
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static inline void ppc_hash32_store_hpte0(CPUPPCState *env,
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hwaddr pte_offset, target_ulong pte0)
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{
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assert(!env->external_htab); /* Not supported on 32-bit for now */
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stl_phys(env->htab_base + pte_offset, pte0);
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}
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static inline void ppc_hash32_store_hpte1(CPUPPCState *env,
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hwaddr pte_offset, target_ulong pte1)
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{
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assert(!env->external_htab); /* Not supported on 32-bit for now */
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stl_phys(env->htab_base + pte_offset + HASH_PTE_SIZE_32/2, pte1);
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}
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typedef struct {
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uint32_t pte0, pte1;
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} ppc_hash_pte32_t;
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#endif /* CONFIG_USER_ONLY */
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#endif /* __MMU_HASH32_H__ */
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