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| author | Steven Miao <realmz6@gmail.com> | 2013-04-19 12:22:21 +0200 |
|---|---|---|
| committer | Steven Miao <realmz6@gmail.com> | 2013-05-09 12:22:45 +0200 |
| commit | 5ae89ee043ce96e3790e6c75f3807c8e37d98634 (patch) | |
| tree | c54cc18e61006fe4bed77fb2a15e58e6afb12348 /arch/blackfin/kernel/cplb-nompu/cplbmgr.c | |
| parent | blackfin: smp: fix smp build after drop asm/system.h (diff) | |
| download | linux-5ae89ee043ce96e3790e6c75f3807c8e37d98634.tar.xz linux-5ae89ee043ce96e3790e6c75f3807c8e37d98634.zip | |
bfin cache: dcplb map: add 16M dcplb map for BF60x
use 16M data cplb map on BF60x to avoid too much dcplb miss overhead
cleanup cplb info
Signed-off-by: Steven Miao <realmz6@gmail.com>
Diffstat (limited to 'arch/blackfin/kernel/cplb-nompu/cplbmgr.c')
| -rw-r--r-- | arch/blackfin/kernel/cplb-nompu/cplbmgr.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c index e854f9066cbd..79cc0f6dcdd5 100644 --- a/arch/blackfin/kernel/cplb-nompu/cplbmgr.c +++ b/arch/blackfin/kernel/cplb-nompu/cplbmgr.c @@ -145,7 +145,7 @@ MGR_ATTR static int dcplb_miss(int cpu) unsigned long addr = bfin_read_DCPLB_FAULT_ADDR(); int status = bfin_read_DCPLB_STATUS(); int idx; - unsigned long d_data, base, addr1, eaddr; + unsigned long d_data, base, addr1, eaddr, cplb_pagesize, cplb_pageflags; nr_dcplb_miss[cpu]++; if (unlikely(status & FAULT_USERSUPV)) @@ -167,18 +167,37 @@ MGR_ATTR static int dcplb_miss(int cpu) if (unlikely(d_data == 0)) return CPLB_NO_ADDR_MATCH; - addr1 = addr & ~(SIZE_4M - 1); addr &= ~(SIZE_1M - 1); d_data |= PAGE_SIZE_1MB; - if (addr1 >= base && (addr1 + SIZE_4M) <= eaddr) { + + /* BF60x support large than 4M CPLB page size */ +#ifdef PAGE_SIZE_16MB + cplb_pageflags = PAGE_SIZE_16MB; + cplb_pagesize = SIZE_16M; +#else + cplb_pageflags = PAGE_SIZE_4MB; + cplb_pagesize = SIZE_4M; +#endif + +find_pagesize: + addr1 = addr & ~(cplb_pagesize - 1); + if (addr1 >= base && (addr1 + cplb_pagesize) <= eaddr) { /* * This works because * (PAGE_SIZE_4MB & PAGE_SIZE_1MB) == PAGE_SIZE_1MB. */ - d_data |= PAGE_SIZE_4MB; + d_data |= cplb_pageflags; addr = addr1; + goto found_pagesize; + } else { + if (cplb_pagesize > SIZE_4M) { + cplb_pageflags = PAGE_SIZE_4MB; + cplb_pagesize = SIZE_4M; + goto find_pagesize; + } } +found_pagesize: #ifdef CONFIG_BF60x if ((addr >= ASYNC_BANK0_BASE) && (addr < ASYNC_BANK3_BASE + ASYNC_BANK3_SIZE)) |