32a74949b7
The base TLB support didn't include support for SPARSEMEM_VMEMMAP, though we did carve out some virtual space for it, the necessary support code wasn't there. This implements it by using 16M pages for now, though the page size could easily be changed at runtime if necessary. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
204 lines
5.7 KiB
C
204 lines
5.7 KiB
C
#ifndef _ASM_POWERPC_MMU_BOOK3E_H_
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#define _ASM_POWERPC_MMU_BOOK3E_H_
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/*
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* Freescale Book-E/Book-3e (ISA 2.06+) MMU support
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*/
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/* Book-3e defined page sizes */
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#define BOOK3E_PAGESZ_1K 0
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#define BOOK3E_PAGESZ_2K 1
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#define BOOK3E_PAGESZ_4K 2
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#define BOOK3E_PAGESZ_8K 3
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#define BOOK3E_PAGESZ_16K 4
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#define BOOK3E_PAGESZ_32K 5
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#define BOOK3E_PAGESZ_64K 6
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#define BOOK3E_PAGESZ_128K 7
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#define BOOK3E_PAGESZ_256K 8
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#define BOOK3E_PAGESZ_512K 9
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#define BOOK3E_PAGESZ_1M 10
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#define BOOK3E_PAGESZ_2M 11
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#define BOOK3E_PAGESZ_4M 12
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#define BOOK3E_PAGESZ_8M 13
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#define BOOK3E_PAGESZ_16M 14
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#define BOOK3E_PAGESZ_32M 15
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#define BOOK3E_PAGESZ_64M 16
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#define BOOK3E_PAGESZ_128M 17
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#define BOOK3E_PAGESZ_256M 18
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#define BOOK3E_PAGESZ_512M 19
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#define BOOK3E_PAGESZ_1GB 20
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#define BOOK3E_PAGESZ_2GB 21
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#define BOOK3E_PAGESZ_4GB 22
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#define BOOK3E_PAGESZ_8GB 23
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#define BOOK3E_PAGESZ_16GB 24
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#define BOOK3E_PAGESZ_32GB 25
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#define BOOK3E_PAGESZ_64GB 26
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#define BOOK3E_PAGESZ_128GB 27
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#define BOOK3E_PAGESZ_256GB 28
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#define BOOK3E_PAGESZ_512GB 29
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#define BOOK3E_PAGESZ_1TB 30
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#define BOOK3E_PAGESZ_2TB 31
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/* MAS registers bit definitions */
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#define MAS0_TLBSEL(x) ((x << 28) & 0x30000000)
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#define MAS0_ESEL(x) ((x << 16) & 0x0FFF0000)
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#define MAS0_NV(x) ((x) & 0x00000FFF)
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#define MAS0_HES 0x00004000
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#define MAS0_WQ_ALLWAYS 0x00000000
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#define MAS0_WQ_COND 0x00001000
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#define MAS0_WQ_CLR_RSRV 0x00002000
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#define MAS1_VALID 0x80000000
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#define MAS1_IPROT 0x40000000
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#define MAS1_TID(x) ((x << 16) & 0x3FFF0000)
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#define MAS1_IND 0x00002000
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#define MAS1_TS 0x00001000
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#define MAS1_TSIZE_MASK 0x00000f80
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#define MAS1_TSIZE_SHIFT 7
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#define MAS1_TSIZE(x) ((x << MAS1_TSIZE_SHIFT) & MAS1_TSIZE_MASK)
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#define MAS2_EPN 0xFFFFF000
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#define MAS2_X0 0x00000040
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#define MAS2_X1 0x00000020
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#define MAS2_W 0x00000010
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#define MAS2_I 0x00000008
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#define MAS2_M 0x00000004
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#define MAS2_G 0x00000002
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#define MAS2_E 0x00000001
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#define MAS2_EPN_MASK(size) (~0 << (size + 10))
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#define MAS2_VAL(addr, size, flags) ((addr) & MAS2_EPN_MASK(size) | (flags))
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#define MAS3_RPN 0xFFFFF000
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#define MAS3_U0 0x00000200
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#define MAS3_U1 0x00000100
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#define MAS3_U2 0x00000080
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#define MAS3_U3 0x00000040
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#define MAS3_UX 0x00000020
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#define MAS3_SX 0x00000010
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#define MAS3_UW 0x00000008
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#define MAS3_SW 0x00000004
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#define MAS3_UR 0x00000002
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#define MAS3_SR 0x00000001
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#define MAS3_SPSIZE 0x0000003e
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#define MAS3_SPSIZE_SHIFT 1
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#define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
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#define MAS4_INDD 0x00008000 /* Default IND */
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#define MAS4_TSIZED(x) MAS1_TSIZE(x)
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#define MAS4_X0D 0x00000040
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#define MAS4_X1D 0x00000020
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#define MAS4_WD 0x00000010
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#define MAS4_ID 0x00000008
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#define MAS4_MD 0x00000004
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#define MAS4_GD 0x00000002
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#define MAS4_ED 0x00000001
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#define MAS4_WIMGED_MASK 0x0000001f /* Default WIMGE */
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#define MAS4_WIMGED_SHIFT 0
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#define MAS4_VLED MAS4_X1D /* Default VLE */
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#define MAS4_ACMD 0x000000c0 /* Default ACM */
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#define MAS4_ACMD_SHIFT 6
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#define MAS4_TSIZED_MASK 0x00000f80 /* Default TSIZE */
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#define MAS4_TSIZED_SHIFT 7
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#define MAS6_SPID0 0x3FFF0000
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#define MAS6_SPID1 0x00007FFE
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#define MAS6_ISIZE(x) MAS1_TSIZE(x)
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#define MAS6_SAS 0x00000001
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#define MAS6_SPID MAS6_SPID0
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#define MAS6_SIND 0x00000002 /* Indirect page */
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#define MAS6_SIND_SHIFT 1
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#define MAS6_SPID_MASK 0x3fff0000
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#define MAS6_SPID_SHIFT 16
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#define MAS6_ISIZE_MASK 0x00000f80
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#define MAS6_ISIZE_SHIFT 7
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#define MAS7_RPN 0xFFFFFFFF
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/* TLBnCFG encoding */
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#define TLBnCFG_N_ENTRY 0x00000fff /* number of entries */
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#define TLBnCFG_HES 0x00002000 /* HW select supported */
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#define TLBnCFG_IPROT 0x00008000 /* IPROT supported */
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#define TLBnCFG_GTWE 0x00010000 /* Guest can write */
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#define TLBnCFG_IND 0x00020000 /* IND entries supported */
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#define TLBnCFG_PT 0x00040000 /* Can load from page table */
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#define TLBnCFG_ASSOC 0xff000000 /* Associativity */
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/* TLBnPS encoding */
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#define TLBnPS_4K 0x00000004
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#define TLBnPS_8K 0x00000008
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#define TLBnPS_16K 0x00000010
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#define TLBnPS_32K 0x00000020
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#define TLBnPS_64K 0x00000040
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#define TLBnPS_128K 0x00000080
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#define TLBnPS_256K 0x00000100
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#define TLBnPS_512K 0x00000200
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#define TLBnPS_1M 0x00000400
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#define TLBnPS_2M 0x00000800
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#define TLBnPS_4M 0x00001000
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#define TLBnPS_8M 0x00002000
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#define TLBnPS_16M 0x00004000
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#define TLBnPS_32M 0x00008000
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#define TLBnPS_64M 0x00010000
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#define TLBnPS_128M 0x00020000
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#define TLBnPS_256M 0x00040000
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#define TLBnPS_512M 0x00080000
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#define TLBnPS_1G 0x00100000
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#define TLBnPS_2G 0x00200000
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#define TLBnPS_4G 0x00400000
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#define TLBnPS_8G 0x00800000
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#define TLBnPS_16G 0x01000000
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#define TLBnPS_32G 0x02000000
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#define TLBnPS_64G 0x04000000
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#define TLBnPS_128G 0x08000000
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#define TLBnPS_256G 0x10000000
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/* tlbilx action encoding */
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#define TLBILX_T_ALL 0
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#define TLBILX_T_TID 1
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#define TLBILX_T_FULLMATCH 3
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#define TLBILX_T_CLASS0 4
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#define TLBILX_T_CLASS1 5
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#define TLBILX_T_CLASS2 6
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#define TLBILX_T_CLASS3 7
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#ifndef __ASSEMBLY__
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extern unsigned int tlbcam_index;
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typedef struct {
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unsigned int id;
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unsigned int active;
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unsigned long vdso_base;
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} mm_context_t;
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/* Page size definitions, common between 32 and 64-bit
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*
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* shift : is the "PAGE_SHIFT" value for that page size
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* penc : is the pte encoding mask
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*
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*/
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struct mmu_psize_def
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{
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unsigned int shift; /* number of bits */
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unsigned int enc; /* PTE encoding */
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};
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extern struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT];
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/* The page sizes use the same names as 64-bit hash but are
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* constants
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*/
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#if defined(CONFIG_PPC_4K_PAGES)
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#define mmu_virtual_psize MMU_PAGE_4K
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#elif defined(CONFIG_PPC_64K_PAGES)
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#define mmu_virtual_psize MMU_PAGE_64K
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#else
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#error Unsupported page size
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#endif
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extern int mmu_linear_psize;
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extern int mmu_vmemmap_psize;
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_POWERPC_MMU_BOOK3E_H_ */
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