35,17 → 35,6 |
#ifndef KERN_sparc64_TLB_H_ |
#define KERN_sparc64_TLB_H_ |
|
#if defined (US) |
#define ITLB_ENTRY_COUNT 64 |
#define DTLB_ENTRY_COUNT 64 |
#define DTLB_MAX_LOCKED_ENTRIES DTLB_ENTRY_COUNT |
#endif |
|
/** TLB_DSMALL is the only of the three DMMUs that can hold locked entries. */ |
#if defined (US3) |
#define DTLB_MAX_LOCKED_ENTRIES 16 |
#endif |
|
#define MEM_CONTEXT_KERNEL 0 |
#define MEM_CONTEXT_TEMP 1 |
|
55,635 → 44,9 |
#define PAGESIZE_512K 2 |
#define PAGESIZE_4M 3 |
|
/** Bit width of the TLB-locked portion of kernel address space. */ |
#define KERNEL_PAGE_WIDTH 22 /* 4M */ |
|
/* TLB Demap Operation types. */ |
#define TLB_DEMAP_PAGE 0 |
#define TLB_DEMAP_CONTEXT 1 |
#if defined (US3) |
#define TLB_DEMAP_ALL 2 |
#endif |
|
#define TLB_DEMAP_TYPE_SHIFT 6 |
|
/* TLB Demap Operation Context register encodings. */ |
#define TLB_DEMAP_PRIMARY 0 |
#define TLB_DEMAP_SECONDARY 1 |
#define TLB_DEMAP_NUCLEUS 2 |
|
/* There are more TLBs in one MMU in US3, their codes are defined here. */ |
#if defined (US3) |
/* D-MMU: one small (16-entry) TLB and two big (512-entry) TLBs */ |
#define TLB_DSMALL 0 |
#define TLB_DBIG_0 2 |
#define TLB_DBIG_1 3 |
|
/* I-MMU: one small (16-entry) TLB and one big TLB */ |
#define TLB_ISMALL 0 |
#define TLB_IBIG 2 |
#endif |
|
#define TLB_DEMAP_CONTEXT_SHIFT 4 |
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/* TLB Tag Access shifts */ |
#define TLB_TAG_ACCESS_CONTEXT_SHIFT 0 |
#define TLB_TAG_ACCESS_CONTEXT_MASK ((1 << 13) - 1) |
#define TLB_TAG_ACCESS_VPN_SHIFT 13 |
|
#ifndef __ASM__ |
|
#include <arch/mm/tte.h> |
#include <arch/mm/mmu.h> |
#include <arch/mm/page.h> |
#include <arch/asm.h> |
#include <arch/barrier.h> |
#include <arch/types.h> |
#include <arch/register.h> |
#include <arch/cpu.h> |
|
union tlb_context_reg { |
uint64_t v; |
struct { |
unsigned long : 51; |
unsigned context : 13; /**< Context/ASID. */ |
} __attribute__ ((packed)); |
}; |
typedef union tlb_context_reg tlb_context_reg_t; |
|
/** I-/D-TLB Data In/Access Register type. */ |
typedef tte_data_t tlb_data_t; |
|
/** I-/D-TLB Data Access Address in Alternate Space. */ |
|
#if defined (US) |
|
union tlb_data_access_addr { |
uint64_t value; |
struct { |
uint64_t : 55; |
unsigned tlb_entry : 6; |
unsigned : 3; |
} __attribute__ ((packed)); |
}; |
typedef union tlb_data_access_addr dtlb_data_access_addr_t; |
typedef union tlb_data_access_addr dtlb_tag_read_addr_t; |
typedef union tlb_data_access_addr itlb_data_access_addr_t; |
typedef union tlb_data_access_addr itlb_tag_read_addr_t; |
|
#elif defined (US3) |
|
/* |
* In US3, I-MMU and D-MMU have different formats of the data |
* access register virtual address. In the corresponding |
* structures the member variable for the entry number is |
* called "local_tlb_entry" - it contrasts with the "tlb_entry" |
* for the US data access register VA structure. The rationale |
* behind this is to prevent careless mistakes in the code |
* caused by setting only the entry number and not the TLB |
* number in the US3 code (when taking the code from US). |
*/ |
|
union dtlb_data_access_addr { |
uint64_t value; |
struct { |
uint64_t : 45; |
unsigned : 1; |
unsigned tlb_number : 2; |
unsigned : 4; |
unsigned local_tlb_entry : 9; |
unsigned : 3; |
} __attribute__ ((packed)); |
}; |
typedef union dtlb_data_access_addr dtlb_data_access_addr_t; |
typedef union dtlb_data_access_addr dtlb_tag_read_addr_t; |
|
union itlb_data_access_addr { |
uint64_t value; |
struct { |
uint64_t : 45; |
unsigned : 1; |
unsigned tlb_number : 2; |
unsigned : 6; |
unsigned local_tlb_entry : 7; |
unsigned : 3; |
} __attribute__ ((packed)); |
}; |
typedef union itlb_data_access_addr itlb_data_access_addr_t; |
typedef union itlb_data_access_addr itlb_tag_read_addr_t; |
|
#endif |
|
/** I-/D-TLB Tag Read Register. */ |
union tlb_tag_read_reg { |
uint64_t value; |
struct { |
uint64_t vpn : 51; /**< Virtual Address bits 63:13. */ |
unsigned context : 13; /**< Context identifier. */ |
} __attribute__ ((packed)); |
}; |
typedef union tlb_tag_read_reg tlb_tag_read_reg_t; |
typedef union tlb_tag_read_reg tlb_tag_access_reg_t; |
|
|
/** TLB Demap Operation Address. */ |
union tlb_demap_addr { |
uint64_t value; |
struct { |
uint64_t vpn: 51; /**< Virtual Address bits 63:13. */ |
#if defined (US) |
unsigned : 6; /**< Ignored. */ |
unsigned type : 1; /**< The type of demap operation. */ |
#elif defined (US3) |
unsigned : 5; /**< Ignored. */ |
unsigned type: 2; /**< The type of demap operation. */ |
#endif |
unsigned context : 2; /**< Context register selection. */ |
unsigned : 4; /**< Zero. */ |
} __attribute__ ((packed)); |
}; |
typedef union tlb_demap_addr tlb_demap_addr_t; |
|
/** TLB Synchronous Fault Status Register. */ |
union tlb_sfsr_reg { |
uint64_t value; |
struct { |
#if defined (US) |
unsigned long : 40; /**< Implementation dependent. */ |
unsigned asi : 8; /**< ASI. */ |
unsigned : 2; |
unsigned ft : 7; /**< Fault type. */ |
#elif defined (US3) |
unsigned long : 39; /**< Implementation dependent. */ |
unsigned nf : 1; /**< Non-faulting load. */ |
unsigned asi : 8; /**< ASI. */ |
unsigned tm : 1; /**< I-TLB miss. */ |
unsigned : 3; /**< Reserved. */ |
unsigned ft : 5; /**< Fault type. */ |
#endif |
unsigned e : 1; /**< Side-effect bit. */ |
unsigned ct : 2; /**< Context Register selection. */ |
unsigned pr : 1; /**< Privilege bit. */ |
unsigned w : 1; /**< Write bit. */ |
unsigned ow : 1; /**< Overwrite bit. */ |
unsigned fv : 1; /**< Fault Valid bit. */ |
} __attribute__ ((packed)); |
}; |
typedef union tlb_sfsr_reg tlb_sfsr_reg_t; |
|
#if defined (US3) |
|
/* |
* Functions for determining the number of entries in TLBs. They either return |
* a constant value or a value based on the CPU autodetection. |
*/ |
|
/** |
* Determine the number of entries in the DMMU's small TLB. |
*/ |
static inline uint16_t tlb_dsmall_size(void) |
{ |
return 16; |
} |
|
/** |
* Determine the number of entries in each DMMU's big TLB. |
*/ |
static inline uint16_t tlb_dbig_size(void) |
{ |
return 512; |
} |
|
/** |
* Determine the number of entries in the IMMU's small TLB. |
*/ |
static inline uint16_t tlb_ismall_size(void) |
{ |
return 16; |
} |
|
/** |
* Determine the number of entries in the IMMU's big TLB. |
*/ |
static inline uint16_t tlb_ibig_size(void) |
{ |
if (((ver_reg_t) ver_read()).impl == IMPL_ULTRASPARCIV_PLUS) |
return 512; |
else |
return 128; |
} |
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#endif |
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/** Read MMU Primary Context Register. |
* |
* @return Current value of Primary Context Register. |
*/ |
static inline uint64_t mmu_primary_context_read(void) |
{ |
return asi_u64_read(ASI_DMMU, VA_PRIMARY_CONTEXT_REG); |
} |
|
/** Write MMU Primary Context Register. |
* |
* @param v New value of Primary Context Register. |
*/ |
static inline void mmu_primary_context_write(uint64_t v) |
{ |
asi_u64_write(ASI_DMMU, VA_PRIMARY_CONTEXT_REG, v); |
flush_pipeline(); |
} |
|
/** Read MMU Secondary Context Register. |
* |
* @return Current value of Secondary Context Register. |
*/ |
static inline uint64_t mmu_secondary_context_read(void) |
{ |
return asi_u64_read(ASI_DMMU, VA_SECONDARY_CONTEXT_REG); |
} |
|
/** Write MMU Primary Context Register. |
* |
* @param v New value of Primary Context Register. |
*/ |
static inline void mmu_secondary_context_write(uint64_t v) |
{ |
asi_u64_write(ASI_DMMU, VA_SECONDARY_CONTEXT_REG, v); |
flush_pipeline(); |
} |
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#if defined (US) |
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/** Read IMMU TLB Data Access Register. |
* |
* @param entry TLB Entry index. |
* |
* @return Current value of specified IMMU TLB Data Access |
* Register. |
*/ |
static inline uint64_t itlb_data_access_read(index_t entry) |
{ |
itlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_entry = entry; |
return asi_u64_read(ASI_ITLB_DATA_ACCESS_REG, reg.value); |
} |
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/** Write IMMU TLB Data Access Register. |
* |
* @param entry TLB Entry index. |
* @param value Value to be written. |
*/ |
static inline void itlb_data_access_write(index_t entry, uint64_t value) |
{ |
itlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_entry = entry; |
asi_u64_write(ASI_ITLB_DATA_ACCESS_REG, reg.value, value); |
flush_pipeline(); |
} |
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/** Read DMMU TLB Data Access Register. |
* |
* @param entry TLB Entry index. |
* |
* @return Current value of specified DMMU TLB Data Access |
* Register. |
*/ |
static inline uint64_t dtlb_data_access_read(index_t entry) |
{ |
dtlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_entry = entry; |
return asi_u64_read(ASI_DTLB_DATA_ACCESS_REG, reg.value); |
} |
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/** Write DMMU TLB Data Access Register. |
* |
* @param entry TLB Entry index. |
* @param value Value to be written. |
*/ |
static inline void dtlb_data_access_write(index_t entry, uint64_t value) |
{ |
dtlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_entry = entry; |
asi_u64_write(ASI_DTLB_DATA_ACCESS_REG, reg.value, value); |
membar(); |
} |
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/** Read IMMU TLB Tag Read Register. |
* |
* @param entry TLB Entry index. |
* |
* @return Current value of specified IMMU TLB Tag Read Register. |
*/ |
static inline uint64_t itlb_tag_read_read(index_t entry) |
{ |
itlb_tag_read_addr_t tag; |
|
tag.value = 0; |
tag.tlb_entry = entry; |
return asi_u64_read(ASI_ITLB_TAG_READ_REG, tag.value); |
} |
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/** Read DMMU TLB Tag Read Register. |
* |
* @param entry TLB Entry index. |
* |
* @return Current value of specified DMMU TLB Tag Read Register. |
*/ |
static inline uint64_t dtlb_tag_read_read(index_t entry) |
{ |
dtlb_tag_read_addr_t tag; |
|
tag.value = 0; |
tag.tlb_entry = entry; |
return asi_u64_read(ASI_DTLB_TAG_READ_REG, tag.value); |
} |
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#elif defined (US3) |
|
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/** Read IMMU TLB Data Access Register. |
* |
* @param tlb TLB number (one of TLB_ISMALL or TLB_IBIG) |
* @param entry TLB Entry index. |
* |
* @return Current value of specified IMMU TLB Data Access |
* Register. |
*/ |
static inline uint64_t itlb_data_access_read(int tlb, index_t entry) |
{ |
itlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_number = tlb; |
reg.local_tlb_entry = entry; |
return asi_u64_read(ASI_ITLB_DATA_ACCESS_REG, reg.value); |
} |
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/** Write IMMU TLB Data Access Register. |
* @param tlb TLB number (one of TLB_ISMALL or TLB_IBIG) |
* @param entry TLB Entry index. |
* @param value Value to be written. |
*/ |
static inline void itlb_data_access_write(int tlb, index_t entry, |
uint64_t value) |
{ |
itlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_number = tlb; |
reg.local_tlb_entry = entry; |
asi_u64_write(ASI_ITLB_DATA_ACCESS_REG, reg.value, value); |
flush_pipeline(); |
} |
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/** Read DMMU TLB Data Access Register. |
* |
* @param tlb TLB number (one of TLB_DSMALL, TLB_DBIG, TLB_DBIG) |
* @param entry TLB Entry index. |
* |
* @return Current value of specified DMMU TLB Data Access |
* Register. |
*/ |
static inline uint64_t dtlb_data_access_read(int tlb, index_t entry) |
{ |
dtlb_data_access_addr_t reg; |
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reg.value = 0; |
reg.tlb_number = tlb; |
reg.local_tlb_entry = entry; |
return asi_u64_read(ASI_DTLB_DATA_ACCESS_REG, reg.value); |
} |
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/** Write DMMU TLB Data Access Register. |
* |
* @param tlb TLB number (one of TLB_DSMALL, TLB_DBIG_0, TLB_DBIG_1) |
* @param entry TLB Entry index. |
* @param value Value to be written. |
*/ |
static inline void dtlb_data_access_write(int tlb, index_t entry, |
uint64_t value) |
{ |
dtlb_data_access_addr_t reg; |
|
reg.value = 0; |
reg.tlb_number = tlb; |
reg.local_tlb_entry = entry; |
asi_u64_write(ASI_DTLB_DATA_ACCESS_REG, reg.value, value); |
membar(); |
} |
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/** Read IMMU TLB Tag Read Register. |
* |
* @param tlb TLB number (one of TLB_ISMALL or TLB_IBIG) |
* @param entry TLB Entry index. |
* |
* @return Current value of specified IMMU TLB Tag Read Register. |
*/ |
static inline uint64_t itlb_tag_read_read(int tlb, index_t entry) |
{ |
itlb_tag_read_addr_t tag; |
|
tag.value = 0; |
tag.tlb_number = tlb; |
tag.local_tlb_entry = entry; |
return asi_u64_read(ASI_ITLB_TAG_READ_REG, tag.value); |
} |
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/** Read DMMU TLB Tag Read Register. |
* |
* @param tlb TLB number (one of TLB_DSMALL, TLB_DBIG_0, TLB_DBIG_1) |
* @param entry TLB Entry index. |
* |
* @return Current value of specified DMMU TLB Tag Read Register. |
*/ |
static inline uint64_t dtlb_tag_read_read(int tlb, index_t entry) |
{ |
dtlb_tag_read_addr_t tag; |
|
tag.value = 0; |
tag.tlb_number = tlb; |
tag.local_tlb_entry = entry; |
return asi_u64_read(ASI_DTLB_TAG_READ_REG, tag.value); |
} |
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#endif |
|
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/** Write IMMU TLB Tag Access Register. |
* |
* @param v Value to be written. |
*/ |
static inline void itlb_tag_access_write(uint64_t v) |
{ |
asi_u64_write(ASI_IMMU, VA_IMMU_TAG_ACCESS, v); |
flush_pipeline(); |
} |
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/** Read IMMU TLB Tag Access Register. |
* |
* @return Current value of IMMU TLB Tag Access Register. |
*/ |
static inline uint64_t itlb_tag_access_read(void) |
{ |
return asi_u64_read(ASI_IMMU, VA_IMMU_TAG_ACCESS); |
} |
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/** Write DMMU TLB Tag Access Register. |
* |
* @param v Value to be written. |
*/ |
static inline void dtlb_tag_access_write(uint64_t v) |
{ |
asi_u64_write(ASI_DMMU, VA_DMMU_TAG_ACCESS, v); |
membar(); |
} |
|
/** Read DMMU TLB Tag Access Register. |
* |
* @return Current value of DMMU TLB Tag Access Register. |
*/ |
static inline uint64_t dtlb_tag_access_read(void) |
{ |
return asi_u64_read(ASI_DMMU, VA_DMMU_TAG_ACCESS); |
} |
|
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/** Write IMMU TLB Data in Register. |
* |
* @param v Value to be written. |
*/ |
static inline void itlb_data_in_write(uint64_t v) |
{ |
asi_u64_write(ASI_ITLB_DATA_IN_REG, 0, v); |
flush_pipeline(); |
} |
|
/** Write DMMU TLB Data in Register. |
* |
* @param v Value to be written. |
*/ |
static inline void dtlb_data_in_write(uint64_t v) |
{ |
asi_u64_write(ASI_DTLB_DATA_IN_REG, 0, v); |
membar(); |
} |
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/** Read ITLB Synchronous Fault Status Register. |
* |
* @return Current content of I-SFSR register. |
*/ |
static inline uint64_t itlb_sfsr_read(void) |
{ |
return asi_u64_read(ASI_IMMU, VA_IMMU_SFSR); |
} |
|
/** Write ITLB Synchronous Fault Status Register. |
* |
* @param v New value of I-SFSR register. |
*/ |
static inline void itlb_sfsr_write(uint64_t v) |
{ |
asi_u64_write(ASI_IMMU, VA_IMMU_SFSR, v); |
flush_pipeline(); |
} |
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/** Read DTLB Synchronous Fault Status Register. |
* |
* @return Current content of D-SFSR register. |
*/ |
static inline uint64_t dtlb_sfsr_read(void) |
{ |
return asi_u64_read(ASI_DMMU, VA_DMMU_SFSR); |
} |
|
/** Write DTLB Synchronous Fault Status Register. |
* |
* @param v New value of D-SFSR register. |
*/ |
static inline void dtlb_sfsr_write(uint64_t v) |
{ |
asi_u64_write(ASI_DMMU, VA_DMMU_SFSR, v); |
membar(); |
} |
|
/** Read DTLB Synchronous Fault Address Register. |
* |
* @return Current content of D-SFAR register. |
*/ |
static inline uint64_t dtlb_sfar_read(void) |
{ |
return asi_u64_read(ASI_DMMU, VA_DMMU_SFAR); |
} |
|
/** Perform IMMU TLB Demap Operation. |
* |
* @param type Selects between context and page demap (and entire MMU |
* demap on US3). |
* @param context_encoding Specifies which Context register has Context ID for |
* demap. |
* @param page Address which is on the page to be demapped. |
*/ |
static inline void itlb_demap(int type, int context_encoding, uintptr_t page) |
{ |
tlb_demap_addr_t da; |
page_address_t pg; |
|
da.value = 0; |
pg.address = page; |
|
da.type = type; |
da.context = context_encoding; |
da.vpn = pg.vpn; |
|
/* da.value is the address within the ASI */ |
asi_u64_write(ASI_IMMU_DEMAP, da.value, 0); |
|
flush_pipeline(); |
} |
|
/** Perform DMMU TLB Demap Operation. |
* |
* @param type Selects between context and page demap (and entire MMU |
* demap on US3). |
* @param context_encoding Specifies which Context register has Context ID for |
* demap. |
* @param page Address which is on the page to be demapped. |
*/ |
static inline void dtlb_demap(int type, int context_encoding, uintptr_t page) |
{ |
tlb_demap_addr_t da; |
page_address_t pg; |
|
da.value = 0; |
pg.address = page; |
|
da.type = type; |
da.context = context_encoding; |
da.vpn = pg.vpn; |
|
/* da.value is the address within the ASI */ |
asi_u64_write(ASI_DMMU_DEMAP, da.value, 0); |
|
membar(); |
} |
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extern void fast_instruction_access_mmu_miss(unative_t, istate_t *); |
extern void fast_data_access_mmu_miss(tlb_tag_access_reg_t, istate_t *); |
extern void fast_data_access_protection(tlb_tag_access_reg_t , istate_t *); |
|
extern void dtlb_insert_mapping(uintptr_t, uintptr_t, int, bool, bool); |
|
extern void dump_sfsr_and_sfar(void); |
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#endif /* !def __ASM__ */ |
|
#endif |