[MIPS] Add protected_blast_icache_range, blast_icache_range, etc.

    
Add blast_xxx_range(), protected_blast_xxx_range() etc. for common
use.  They are built by __BUILD_BLAST_CACHE_RANGE().
Use protected_cache_op() macro for various protected_ routines.
Output code should be logically same.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 23 insertions, 151 deletions

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index e51c38cef88e..1b71d91e8268 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -471,61 +471,29 @@ struct flush_icache_range_args {
 static inline void local_r4k_flush_icache_range(void *args)
 {
         struct flush_icache_range_args *fir_args = args;
-        unsigned long dc_lsize = cpu_dcache_line_size();
-        unsigned long ic_lsize = cpu_icache_line_size();
-        unsigned long sc_lsize = cpu_scache_line_size();
         unsigned long start = fir_args->start;
         unsigned long end = fir_args->end;
-        unsigned long addr, aend;
 
         if (!cpu_has_ic_fills_f_dc) {
                 if (end - start > dcache_size) {
                         r4k_blast_dcache();
                 } else {
                         R4600_HIT_CACHEOP_WAR_IMPL;
-                        addr = start & ~(dc_lsize - 1);
-                        aend = (end - 1) & ~(dc_lsize - 1);
-
-                        while (1) {
-                                /* Hit_Writeback_Inv_D */
-                                protected_writeback_dcache_line(addr);
-                                if (addr == aend)
-                                        break;
-                                addr += dc_lsize;
-                        }
+                        protected_blast_dcache_range(start, end);
                 }
 
                 if (!cpu_icache_snoops_remote_store) {
-                        if (end - start > scache_size) {
+                        if (end - start > scache_size)
                                 r4k_blast_scache();
-                        } else {
-                                addr = start & ~(sc_lsize - 1);
-                                aend = (end - 1) & ~(sc_lsize - 1);
-
-                                while (1) {
-                                        /* Hit_Writeback_Inv_SD */
-                                        protected_writeback_scache_line(addr);
-                                        if (addr == aend)
-                                                break;
-                                        addr += sc_lsize;
-                                }
-                        }
+                        else
+                                protected_blast_scache_range(start, end);
                 }
         }
 
         if (end - start > icache_size)
                 r4k_blast_icache();
-        else {
-                addr = start & ~(ic_lsize - 1);
-                aend = (end - 1) & ~(ic_lsize - 1);
-                while (1) {
-                        /* Hit_Invalidate_I */
-                        protected_flush_icache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += ic_lsize;
-                }
-        }
+        else
+                protected_blast_icache_range(start, end);
 }
 
 static void r4k_flush_icache_range(unsigned long start, unsigned long end)
@@ -619,27 +587,14 @@ static void r4k_flush_icache_page(struct vm_area_struct *vma,
 
 static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         if (cpu_has_subset_pcaches) {
-                unsigned long sc_lsize = cpu_scache_line_size();
-
-                if (size >= scache_size) {
+                if (size >= scache_size)
                         r4k_blast_scache();
-                        return;
-                }
-
-                a = addr & ~(sc_lsize - 1);
-                end = (addr + size - 1) & ~(sc_lsize - 1);
-                while (1) {
-                        flush_scache_line(a);   /* Hit_Writeback_Inv_SD */
-                        if (a == end)
-                                break;
-                        a += sc_lsize;
-                }
+                else
+                        blast_scache_range(addr, addr + size);
                 return;
         }
 
@@ -651,17 +606,8 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
         if (size >= dcache_size) {
                 r4k_blast_dcache();
         } else {
-                unsigned long dc_lsize = cpu_dcache_line_size();
-
                 R4600_HIT_CACHEOP_WAR_IMPL;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
-                        if (a == end)
-                                break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 
         bc_wback_inv(addr, size);
@@ -669,44 +615,22 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 
 static void r4k_dma_cache_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         if (cpu_has_subset_pcaches) {
-                unsigned long sc_lsize = cpu_scache_line_size();
-
-                if (size >= scache_size) {
+                if (size >= scache_size)
                         r4k_blast_scache();
-                        return;
-                }
-
-                a = addr & ~(sc_lsize - 1);
-                end = (addr + size - 1) & ~(sc_lsize - 1);
-                while (1) {
-                        flush_scache_line(a);   /* Hit_Writeback_Inv_SD */
-                        if (a == end)
-                                break;
-                        a += sc_lsize;
-                }
+                else
+                        blast_scache_range(addr, addr + size);
                 return;
         }
 
         if (size >= dcache_size) {
                 r4k_blast_dcache();
         } else {
-                unsigned long dc_lsize = cpu_dcache_line_size();
-
                 R4600_HIT_CACHEOP_WAR_IMPL;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a);   /* Hit_Writeback_Inv_D */
-                        if (a == end)
-                                break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 
         bc_inv(addr, size);
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index 0a97a9434eba..7c572bea4a98 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -44,8 +44,6 @@ __asm__ __volatile__( \
 /* TX39H-style cache flush routines. */
 static void tx39h_flush_icache_all(void)
 {
-        unsigned long start = KSEG0;
-        unsigned long end = (start + icache_size);
         unsigned long flags, config;
 
         /* disable icache (set ICE#) */
@@ -53,33 +51,18 @@ static void tx39h_flush_icache_all(void)
         config = read_c0_conf();
         write_c0_conf(config & ~TX39_CONF_ICE);
         TX39_STOP_STREAMING();
-
-        /* invalidate icache */
-        while (start < end) {
-                cache16_unroll32(start, Index_Invalidate_I);
-                start += 0x200;
-        }
-
+        blast_icache16();
         write_c0_conf(config);
         local_irq_restore(flags);
 }
 
 static void tx39h_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
-        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-
         /* Catch bad driver code */
         BUG_ON(size == 0);
 
         iob();
-        a = addr & ~(dc_lsize - 1);
-        end = (addr + size - 1) & ~(dc_lsize - 1);
-        while (1) {
-                invalidate_dcache_line(a); /* Hit_Invalidate_D */
-                if (a == end) break;
-                a += dc_lsize;
-        }
+        blast_inv_dcache_range(addr, addr + size);
 }
 
 
@@ -241,42 +224,21 @@ static void tx39_flush_data_cache_page(unsigned long addr)
 
 static void tx39_flush_icache_range(unsigned long start, unsigned long end)
 {
-        unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-        unsigned long addr, aend;
-
         if (end - start > dcache_size)
                 tx39_blast_dcache();
-        else {
-                addr = start & ~(dc_lsize - 1);
-                aend = (end - 1) & ~(dc_lsize - 1);
-
-                while (1) {
-                        /* Hit_Writeback_Inv_D */
-                        protected_writeback_dcache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += dc_lsize;
-                }
-        }
+        else
+                protected_blast_dcache_range(start, end);
 
         if (end - start > icache_size)
                 tx39_blast_icache();
         else {
                 unsigned long flags, config;
-                addr = start & ~(dc_lsize - 1);
-                aend = (end - 1) & ~(dc_lsize - 1);
                 /* disable icache (set ICE#) */
                 local_irq_save(flags);
                 config = read_c0_conf();
                 write_c0_conf(config & ~TX39_CONF_ICE);
                 TX39_STOP_STREAMING();
-                while (1) {
-                        /* Hit_Invalidate_I */
-                        protected_flush_icache_line(addr);
-                        if (addr == aend)
-                                break;
-                        addr += dc_lsize;
-                }
+                protected_blast_icache_range(start, end);
                 write_c0_conf(config);
                 local_irq_restore(flags);
         }
@@ -311,7 +273,7 @@ static void tx39_flush_icache_page(struct vm_area_struct *vma, struct page *page
 
 static void tx39_dma_cache_wback_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
+        unsigned long end;
 
         if (((size | addr) & (PAGE_SIZE - 1)) == 0) {
                 end = addr + size;
@@ -322,20 +284,13 @@ static void tx39_dma_cache_wback_inv(unsigned long addr, unsigned long size)
         } else if (size > dcache_size) {
                 tx39_blast_dcache();
         } else {
-                unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        flush_dcache_line(a); /* Hit_Writeback_Inv_D */
-                        if (a == end) break;
-                        a += dc_lsize;
-                }
+                blast_dcache_range(addr, addr + size);
         }
 }
 
 static void tx39_dma_cache_inv(unsigned long addr, unsigned long size)
 {
-        unsigned long end, a;
+        unsigned long end;
 
         if (((size | addr) & (PAGE_SIZE - 1)) == 0) {
                 end = addr + size;
@@ -346,14 +301,7 @@ static void tx39_dma_cache_inv(unsigned long addr, unsigned long size)
         } else if (size > dcache_size) {
                 tx39_blast_dcache();
         } else {
-                unsigned long dc_lsize = current_cpu_data.dcache.linesz;
-                a = addr & ~(dc_lsize - 1);
-                end = (addr + size - 1) & ~(dc_lsize - 1);
-                while (1) {
-                        invalidate_dcache_line(a); /* Hit_Invalidate_D */
-                        if (a == end) break;
-                        a += dc_lsize;
-                }
+                blast_inv_dcache_range(addr, addr + size);
         }
 }