diff options
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/mm/cache_arc700.c | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c index d48afebf9df5..8a760e2c0341 100644 --- a/arch/arc/mm/cache_arc700.c +++ b/arch/arc/mm/cache_arc700.c @@ -270,21 +270,20 @@ static inline void __dc_entire_op(const int cacheop) * Doesn't deal with type-of-op/IRQ-disabling/waiting-for-flush-to-complete * It's sole purpose is to help gcc generate ZOL */ -static inline void __dc_line_loop(unsigned long start, unsigned long sz, - int aux_reg) +static inline void __dc_line_loop(unsigned long paddr, unsigned long sz, + int aux_reg) { - int num_lines, slack; + int num_lines; /* Ensure we properly floor/ceil the non-line aligned/sized requests - * and have @start - aligned to cache line and integral @num_lines. + * and have @paddr - aligned to cache line and integral @num_lines. * This however can be avoided for page sized since: - * -@start will be cache-line aligned already (being page aligned) + * -@paddr will be cache-line aligned already (being page aligned) * -@sz will be integral multiple of line size (being page sized). */ if (!(__builtin_constant_p(sz) && sz == PAGE_SIZE)) { - slack = start & ~DCACHE_LINE_MASK; - sz += slack; - start -= slack; + sz += paddr & ~DCACHE_LINE_MASK; + paddr &= DCACHE_LINE_MASK; } num_lines = DIV_ROUND_UP(sz, ARC_DCACHE_LINE_LEN); @@ -298,17 +297,17 @@ static inline void __dc_line_loop(unsigned long start, unsigned long sz, * doesn't support aliasing configs for D$, yet. * Thus paddr is enough to provide both tag and index. */ - write_aux_reg(ARC_REG_DC_PTAG, start); + write_aux_reg(ARC_REG_DC_PTAG, paddr); #endif - write_aux_reg(aux_reg, start); - start += ARC_DCACHE_LINE_LEN; + write_aux_reg(aux_reg, paddr); + paddr += ARC_DCACHE_LINE_LEN; } } /* * D-Cache : Per Line INV (discard or wback+discard) or FLUSH (wback) */ -static inline void __dc_line_op(unsigned long start, unsigned long sz, +static inline void __dc_line_op(unsigned long paddr, unsigned long sz, const int cacheop) { unsigned long flags, tmp = tmp; @@ -332,7 +331,7 @@ static inline void __dc_line_op(unsigned long start, unsigned long sz, else aux = ARC_REG_DC_FLDL; - __dc_line_loop(start, sz, aux); + __dc_line_loop(paddr, sz, aux); if (cacheop & OP_FLUSH) /* flush / flush-n-inv both wait */ wait_for_flush(); @@ -347,7 +346,7 @@ static inline void __dc_line_op(unsigned long start, unsigned long sz, #else #define __dc_entire_op(cacheop) -#define __dc_line_op(start, sz, cacheop) +#define __dc_line_op(paddr, sz, cacheop) #endif /* CONFIG_ARC_HAS_DCACHE */ @@ -399,49 +398,45 @@ static inline void __dc_line_op(unsigned long start, unsigned long sz, /*********************************************************** * Machine specific helper for per line I-Cache invalidate. */ -static void __ic_line_inv_vaddr(unsigned long phy_start, unsigned long vaddr, +static void __ic_line_inv_vaddr(unsigned long paddr, unsigned long vaddr, unsigned long sz) { unsigned long flags; - int num_lines, slack; - unsigned int addr; + int num_lines; /* * Ensure we properly floor/ceil the non-line aligned/sized requests: * However page sized flushes can be compile time optimised. - * -@phy_start will be cache-line aligned already (being page aligned) + * -@paddr will be cache-line aligned already (being page aligned) * -@sz will be integral multiple of line size (being page sized). */ if (!(__builtin_constant_p(sz) && sz == PAGE_SIZE)) { - slack = phy_start & ~ICACHE_LINE_MASK; - sz += slack; - phy_start -= slack; + sz += paddr & ~ICACHE_LINE_MASK; + paddr &= ICACHE_LINE_MASK; + vaddr &= ICACHE_LINE_MASK; } num_lines = DIV_ROUND_UP(sz, ARC_ICACHE_LINE_LEN); -#if (CONFIG_ARC_MMU_VER > 2) - vaddr &= ICACHE_LINE_MASK; - addr = phy_start; -#else +#if (CONFIG_ARC_MMU_VER <= 2) /* bits 17:13 of vaddr go as bits 4:0 of paddr */ - addr = phy_start | ((vaddr >> 13) & 0x1F); + paddr |= (vaddr >> PAGE_SHIFT) & 0x1F; #endif local_irq_save(flags); while (num_lines-- > 0) { #if (CONFIG_ARC_MMU_VER > 2) /* tag comes from phy addr */ - write_aux_reg(ARC_REG_IC_PTAG, addr); + write_aux_reg(ARC_REG_IC_PTAG, paddr); /* index bits come from vaddr */ write_aux_reg(ARC_REG_IC_IVIL, vaddr); vaddr += ARC_ICACHE_LINE_LEN; #else /* paddr contains stuffed vaddrs bits */ - write_aux_reg(ARC_REG_IC_IVIL, addr); + write_aux_reg(ARC_REG_IC_IVIL, paddr); #endif - addr += ARC_ICACHE_LINE_LEN; + paddr += ARC_ICACHE_LINE_LEN; } local_irq_restore(flags); } |