diff options
| author | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-06-09 00:20:13 +0000 |
|---|---|---|
| committer | pbrook <pbrook@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-06-09 00:20:13 +0000 |
| commit | 0f459d16c378128a586cf161526721a81b629405 (patch) | |
| tree | fd799d1f73b97e8ae142e9bdb0c4bcc6c0f18f8f /cpu-defs.h | |
| parent | f227f17d1b4f21b681c94efce859b9094482b7e6 (diff) | |
Clean up MMIO TLB handling.
The IO index is now stored in its own field, instead of being wedged
into the vaddr field. This eliminates the ROMD and watchpoint host
pointer weirdness. The IO index space is expanded by 1 bit, and
several additional bits are made available in the TLB vaddr field.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4704 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'cpu-defs.h')
| -rw-r--r-- | cpu-defs.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/cpu-defs.h b/cpu-defs.h index 5804521a7e..e197686040 100644 --- a/cpu-defs.h +++ b/cpu-defs.h @@ -106,16 +106,17 @@ typedef uint64_t target_phys_addr_t; #endif typedef struct CPUTLBEntry { - /* bit 31 to TARGET_PAGE_BITS : virtual address - bit TARGET_PAGE_BITS-1..IO_MEM_SHIFT : if non zero, memory io - zone number + /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address + bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not + go directly to ram. bit 3 : indicates that the entry is invalid bit 2..0 : zero */ target_ulong addr_read; target_ulong addr_write; target_ulong addr_code; - /* addend to virtual address to get physical address */ + /* Addend to virtual address to get physical address. IO accesses + use the correcponding iotlb value. */ #if TARGET_PHYS_ADDR_BITS == 64 /* on i386 Linux make sure it is aligned */ target_phys_addr_t addend __attribute__((aligned(8))); @@ -143,6 +144,7 @@ typedef struct CPUTLBEntry { int halted; /* TRUE if the CPU is in suspend state */ \ /* The meaning of the MMU modes is defined in the target code. */ \ CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \ + target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \ struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \ /* buffer for temporaries in the code generator */ \ long temp_buf[CPU_TEMP_BUF_NLONGS]; \ @@ -155,7 +157,7 @@ typedef struct CPUTLBEntry { \ struct { \ target_ulong vaddr; \ - target_phys_addr_t addend; \ + int type; /* PAGE_READ/PAGE_WRITE */ \ } watchpoint[MAX_WATCHPOINTS]; \ int nb_watchpoints; \ int watchpoint_hit; \ |