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ppc_mmu: rename reg_desc to rgn_desc to improve readability.

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This commit is contained in:
Maxim Poliakovski 2023-08-07 13:56:49 +02:00
parent 52a64168d7
commit de1f0c8a9b
2 changed files with 17 additions and 17 deletions
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32
cpu/ppc/ppcmmu.cpp
View File

@ -526,9 +526,9 @@ static TLBEntry* itlb2_refill(uint32_t guest_va)
} }
// look up host virtual address // look up host virtual address
AddressMapEntry* reg_desc = mem_ctrl_instance->find_range(phys_addr); AddressMapEntry* rgn_desc = mem_ctrl_instance->find_range(phys_addr);
if (reg_desc) { if (rgn_desc) {
if (reg_desc->type & RT_MMIO) { if (rgn_desc->type & RT_MMIO) {
ABORT_F("Instruction fetch from MMIO region at 0x%08X!\n", phys_addr); ABORT_F("Instruction fetch from MMIO region at 0x%08X!\n", phys_addr);
} }
// refill the secondary TLB // refill the secondary TLB
@ -536,8 +536,8 @@ static TLBEntry* itlb2_refill(uint32_t guest_va)
tlb_entry = tlb2_target_entry<TLBType::ITLB>(tag); tlb_entry = tlb2_target_entry<TLBType::ITLB>(tag);
tlb_entry->tag = tag; tlb_entry->tag = tag;
tlb_entry->flags = flags | TLBFlags::PAGE_MEM; tlb_entry->flags = flags | TLBFlags::PAGE_MEM;
tlb_entry->host_va_offs_r = (int64_t)reg_desc->mem_ptr - guest_va + tlb_entry->host_va_offs_r = (int64_t)rgn_desc->mem_ptr - guest_va +
(phys_addr - reg_desc->start); (phys_addr - rgn_desc->start);
} else { } else {
ABORT_F("Instruction fetch from unmapped memory at 0x%08X!\n", phys_addr); ABORT_F("Instruction fetch from unmapped memory at 0x%08X!\n", phys_addr);
} }
@ -599,20 +599,20 @@ static TLBEntry* dtlb2_refill(uint32_t guest_va, int is_write)
} }
// look up host virtual address // look up host virtual address
AddressMapEntry* reg_desc = mem_ctrl_instance->find_range(phys_addr); AddressMapEntry* rgn_desc = mem_ctrl_instance->find_range(phys_addr);
if (reg_desc) { if (rgn_desc) {
// refill the secondary TLB // refill the secondary TLB
tlb_entry = tlb2_target_entry<TLBType::DTLB>(tag); tlb_entry = tlb2_target_entry<TLBType::DTLB>(tag);
tlb_entry->tag = tag; tlb_entry->tag = tag;
if (reg_desc->type & RT_MMIO) { // MMIO region if (rgn_desc->type & RT_MMIO) { // MMIO region
tlb_entry->flags = flags | TLBFlags::PAGE_IO; tlb_entry->flags = flags | TLBFlags::PAGE_IO;
tlb_entry->reg_desc = reg_desc; tlb_entry->rgn_desc = rgn_desc;
tlb_entry->dev_base_va = guest_va - (phys_addr - reg_desc->start); tlb_entry->dev_base_va = guest_va - (phys_addr - rgn_desc->start);
} else { // memory region backed by host memory } else { // memory region backed by host memory
tlb_entry->flags = flags | TLBFlags::PAGE_MEM; tlb_entry->flags = flags | TLBFlags::PAGE_MEM;
tlb_entry->host_va_offs_r = (int64_t)reg_desc->mem_ptr - guest_va + tlb_entry->host_va_offs_r = (int64_t)rgn_desc->mem_ptr - guest_va +
(phys_addr - reg_desc->start); (phys_addr - rgn_desc->start);
if (reg_desc->type == RT_ROM) { if (rgn_desc->type == RT_ROM) {
// redirect writes to the dummy page for ROM regions // redirect writes to the dummy page for ROM regions
tlb_entry->host_va_offs_w = (int64_t)&dummy_page - guest_va; tlb_entry->host_va_offs_w = (int64_t)&dummy_page - guest_va;
} else { } else {
@ -1036,7 +1036,7 @@ inline T mmu_read_vmem(uint32_t guest_va)
iomem_reads_total++; iomem_reads_total++;
#endif #endif
return ( return (
tlb2_entry->reg_desc->devobj->read(tlb2_entry->reg_desc->start, tlb2_entry->rgn_desc->devobj->read(tlb2_entry->rgn_desc->start,
guest_va - tlb2_entry->dev_base_va, guest_va - tlb2_entry->dev_base_va,
sizeof(T)) sizeof(T))
); );
@ -1144,7 +1144,7 @@ inline void mmu_write_vmem(uint32_t guest_va, T value)
#ifdef MMU_PROFILING #ifdef MMU_PROFILING
iomem_writes_total++; iomem_writes_total++;
#endif #endif
tlb2_entry->reg_desc->devobj->write(tlb2_entry->reg_desc->start, tlb2_entry->rgn_desc->devobj->write(tlb2_entry->rgn_desc->start,
guest_va - tlb2_entry->dev_base_va, guest_va - tlb2_entry->dev_base_va,
value, sizeof(T)); value, sizeof(T));
return; return;
@ -1631,7 +1631,7 @@ static inline uint64_t tlb_translate_addr(uint32_t guest_va)
tlb1_entry->host_va_offs_r = tlb2_entry->host_va_offs_r; tlb1_entry->host_va_offs_r = tlb2_entry->host_va_offs_r;
return tlb1_entry->host_va_offs_r + guest_va; return tlb1_entry->host_va_offs_r + guest_va;
} else { // an attempt to access a memory-mapped device } else { // an attempt to access a memory-mapped device
return guest_va - tlb2_entry->reg_desc->start; return guest_va - tlb2_entry->rgn_desc->start;
} }
} }
} }

2
cpu/ppc/ppcmmu.h
View File

@ -87,7 +87,7 @@ typedef struct TLBEntry {
int64_t host_va_offs_w; int64_t host_va_offs_w;
}; };
struct { // for MMIO pages struct { // for MMIO pages
AddressMapEntry* reg_desc; AddressMapEntry* rgn_desc;
int64_t dev_base_va; int64_t dev_base_va;
}; };
}; };