aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-m68k/tlbflush.h
diff options
context:
space:
mode:
authorSam Ravnborg <sam@ravnborg.org>2009-01-16 06:58:10 -0500
committerGreg Ungerer <gerg@uclinux.org>2009-01-16 06:58:10 -0500
commit49148020bcb6910ce71417bd990a5ce7017f9bd3 (patch)
treee410cc433a69075a0254ee4000cb10d71df3a641 /include/asm-m68k/tlbflush.h
parentae04d1401577bb63151480a053057de58b8e10bb (diff)
m68k,m68knommu: merge header files
Merge header files for m68k and m68knommu to the single location: arch/m68k/include/asm The majority of this patch was the result of the script that is included in the changelog below. The script was originally written by Arnd Bergman and exten by me to cover a few more files. When the header files differed the script uses the following: The original m68k file is named <file>_mm.h [mm for memory manager] The m68knommu file is named <file>_no.h [no for no memory manager] The files uses the following include guard: This include gaurd works as the m68knommu toolchain set the __uClinux__ symbol - so this should work in userspace too. Merging the header files for m68k and m68knommu exposes the (unexpected?) ABI differences thus it is easier to actually identify these and thus to fix them. The commit has been build tested with both a m68k and a m68knommu toolchain - with success. The commit has also been tested with "make headers_check" and this patch fixes make headers_check for m68knommu. The script used: TARGET=arch/m68k/include/asm SOURCE=arch/m68knommu/include/asm INCLUDE="cachectl.h errno.h fcntl.h hwtest.h ioctls.h ipcbuf.h \ linkage.h math-emu.h md.h mman.h movs.h msgbuf.h openprom.h \ oplib.h poll.h posix_types.h resource.h rtc.h sembuf.h shmbuf.h \ shm.h shmparam.h socket.h sockios.h spinlock.h statfs.h stat.h \ termbits.h termios.h tlb.h types.h user.h" EQUAL="auxvec.h cputime.h device.h emergency-restart.h futex.h \ ioctl.h irq_regs.h kdebug.h local.h mutex.h percpu.h \ sections.h topology.h" NOMUUFILES="anchor.h bootstd.h coldfire.h commproc.h dbg.h \ elia.h flat.h m5206sim.h m520xsim.h m523xsim.h m5249sim.h \ m5272sim.h m527xsim.h m528xsim.h m5307sim.h m532xsim.h \ m5407sim.h m68360_enet.h m68360.h m68360_pram.h m68360_quicc.h \ m68360_regs.h MC68328.h MC68332.h MC68EZ328.h MC68VZ328.h \ mcfcache.h mcfdma.h mcfmbus.h mcfne.h mcfpci.h mcfpit.h \ mcfsim.h mcfsmc.h mcftimer.h mcfuart.h mcfwdebug.h \ nettel.h quicc_simple.h smp.h" FILES="atomic.h bitops.h bootinfo.h bug.h bugs.h byteorder.h cache.h \ cacheflush.h checksum.h current.h delay.h div64.h \ dma-mapping.h dma.h elf.h entry.h fb.h fpu.h hardirq.h hw_irq.h io.h \ irq.h kmap_types.h machdep.h mc146818rtc.h mmu.h mmu_context.h \ module.h page.h page_offset.h param.h pci.h pgalloc.h \ pgtable.h processor.h ptrace.h scatterlist.h segment.h \ setup.h sigcontext.h siginfo.h signal.h string.h system.h swab.h \ thread_info.h timex.h tlbflush.h traps.h uaccess.h ucontext.h \ unaligned.h unistd.h" mergefile() { BASE=${1%.h} git mv ${SOURCE}/$1 ${TARGET}/${BASE}_no.h git mv ${TARGET}/$1 ${TARGET}/${BASE}_mm.h cat << EOF > ${TARGET}/$1 EOF git add ${TARGET}/$1 } set -e mkdir -p ${TARGET} git mv include/asm-m68k/* ${TARGET} rmdir include/asm-m68k git rm ${SOURCE}/Kbuild for F in $INCLUDE $EQUAL; do git rm ${SOURCE}/$F done for F in $NOMUUFILES; do git mv ${SOURCE}/$F ${TARGET}/$F done for F in $FILES ; do mergefile $F done rmdir arch/m68knommu/include/asm rmdir arch/m68knommu/include Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'include/asm-m68k/tlbflush.h')
-rw-r--r--include/asm-m68k/tlbflush.h219
1 files changed, 0 insertions, 219 deletions
diff --git a/include/asm-m68k/tlbflush.h b/include/asm-m68k/tlbflush.h
deleted file mode 100644
index acb6bf21a321..000000000000
--- a/include/asm-m68k/tlbflush.h
+++ /dev/null
@@ -1,219 +0,0 @@
1#ifndef _M68K_TLBFLUSH_H
2#define _M68K_TLBFLUSH_H
3
4
5#ifndef CONFIG_SUN3
6
7#include <asm/current.h>
8
9static inline void flush_tlb_kernel_page(void *addr)
10{
11 if (CPU_IS_040_OR_060) {
12 mm_segment_t old_fs = get_fs();
13 set_fs(KERNEL_DS);
14 __asm__ __volatile__(".chip 68040\n\t"
15 "pflush (%0)\n\t"
16 ".chip 68k"
17 : : "a" (addr));
18 set_fs(old_fs);
19 } else if (CPU_IS_020_OR_030)
20 __asm__ __volatile__("pflush #4,#4,(%0)" : : "a" (addr));
21}
22
23/*
24 * flush all user-space atc entries.
25 */
26static inline void __flush_tlb(void)
27{
28 if (CPU_IS_040_OR_060)
29 __asm__ __volatile__(".chip 68040\n\t"
30 "pflushan\n\t"
31 ".chip 68k");
32 else if (CPU_IS_020_OR_030)
33 __asm__ __volatile__("pflush #0,#4");
34}
35
36static inline void __flush_tlb040_one(unsigned long addr)
37{
38 __asm__ __volatile__(".chip 68040\n\t"
39 "pflush (%0)\n\t"
40 ".chip 68k"
41 : : "a" (addr));
42}
43
44static inline void __flush_tlb_one(unsigned long addr)
45{
46 if (CPU_IS_040_OR_060)
47 __flush_tlb040_one(addr);
48 else if (CPU_IS_020_OR_030)
49 __asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
50}
51
52#define flush_tlb() __flush_tlb()
53
54/*
55 * flush all atc entries (both kernel and user-space entries).
56 */
57static inline void flush_tlb_all(void)
58{
59 if (CPU_IS_040_OR_060)
60 __asm__ __volatile__(".chip 68040\n\t"
61 "pflusha\n\t"
62 ".chip 68k");
63 else if (CPU_IS_020_OR_030)
64 __asm__ __volatile__("pflusha");
65}
66
67static inline void flush_tlb_mm(struct mm_struct *mm)
68{
69 if (mm == current->active_mm)
70 __flush_tlb();
71}
72
73static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
74{
75 if (vma->vm_mm == current->active_mm) {
76 mm_segment_t old_fs = get_fs();
77 set_fs(USER_DS);
78 __flush_tlb_one(addr);
79 set_fs(old_fs);
80 }
81}
82
83static inline void flush_tlb_range(struct vm_area_struct *vma,
84 unsigned long start, unsigned long end)
85{
86 if (vma->vm_mm == current->active_mm)
87 __flush_tlb();
88}
89
90static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
91{
92 flush_tlb_all();
93}
94
95#else
96
97
98/* Reserved PMEGs. */
99extern char sun3_reserved_pmeg[SUN3_PMEGS_NUM];
100extern unsigned long pmeg_vaddr[SUN3_PMEGS_NUM];
101extern unsigned char pmeg_alloc[SUN3_PMEGS_NUM];
102extern unsigned char pmeg_ctx[SUN3_PMEGS_NUM];
103
104/* Flush all userspace mappings one by one... (why no flush command,
105 sun?) */
106static inline void flush_tlb_all(void)
107{
108 unsigned long addr;
109 unsigned char ctx, oldctx;
110
111 oldctx = sun3_get_context();
112 for(addr = 0x00000000; addr < TASK_SIZE; addr += SUN3_PMEG_SIZE) {
113 for(ctx = 0; ctx < 8; ctx++) {
114 sun3_put_context(ctx);
115 sun3_put_segmap(addr, SUN3_INVALID_PMEG);
116 }
117 }
118
119 sun3_put_context(oldctx);
120 /* erase all of the userspace pmeg maps, we've clobbered them
121 all anyway */
122 for(addr = 0; addr < SUN3_INVALID_PMEG; addr++) {
123 if(pmeg_alloc[addr] == 1) {
124 pmeg_alloc[addr] = 0;
125 pmeg_ctx[addr] = 0;
126 pmeg_vaddr[addr] = 0;
127 }
128 }
129
130}
131
132/* Clear user TLB entries within the context named in mm */
133static inline void flush_tlb_mm (struct mm_struct *mm)
134{
135 unsigned char oldctx;
136 unsigned char seg;
137 unsigned long i;
138
139 oldctx = sun3_get_context();
140 sun3_put_context(mm->context);
141
142 for(i = 0; i < TASK_SIZE; i += SUN3_PMEG_SIZE) {
143 seg = sun3_get_segmap(i);
144 if(seg == SUN3_INVALID_PMEG)
145 continue;
146
147 sun3_put_segmap(i, SUN3_INVALID_PMEG);
148 pmeg_alloc[seg] = 0;
149 pmeg_ctx[seg] = 0;
150 pmeg_vaddr[seg] = 0;
151 }
152
153 sun3_put_context(oldctx);
154
155}
156
157/* Flush a single TLB page. In this case, we're limited to flushing a
158 single PMEG */
159static inline void flush_tlb_page (struct vm_area_struct *vma,
160 unsigned long addr)
161{
162 unsigned char oldctx;
163 unsigned char i;
164
165 oldctx = sun3_get_context();
166 sun3_put_context(vma->vm_mm->context);
167 addr &= ~SUN3_PMEG_MASK;
168 if((i = sun3_get_segmap(addr)) != SUN3_INVALID_PMEG)
169 {
170 pmeg_alloc[i] = 0;
171 pmeg_ctx[i] = 0;
172 pmeg_vaddr[i] = 0;
173 sun3_put_segmap (addr, SUN3_INVALID_PMEG);
174 }
175 sun3_put_context(oldctx);
176
177}
178/* Flush a range of pages from TLB. */
179
180static inline void flush_tlb_range (struct vm_area_struct *vma,
181 unsigned long start, unsigned long end)
182{
183 struct mm_struct *mm = vma->vm_mm;
184 unsigned char seg, oldctx;
185
186 start &= ~SUN3_PMEG_MASK;
187
188 oldctx = sun3_get_context();
189 sun3_put_context(mm->context);
190
191 while(start < end)
192 {
193 if((seg = sun3_get_segmap(start)) == SUN3_INVALID_PMEG)
194 goto next;
195 if(pmeg_ctx[seg] == mm->context) {
196 pmeg_alloc[seg] = 0;
197 pmeg_ctx[seg] = 0;
198 pmeg_vaddr[seg] = 0;
199 }
200 sun3_put_segmap(start, SUN3_INVALID_PMEG);
201 next:
202 start += SUN3_PMEG_SIZE;
203 }
204}
205
206static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end)
207{
208 flush_tlb_all();
209}
210
211/* Flush kernel page from TLB. */
212static inline void flush_tlb_kernel_page (unsigned long addr)
213{
214 sun3_put_segmap (addr & ~(SUN3_PMEG_SIZE - 1), SUN3_INVALID_PMEG);
215}
216
217#endif
218
219#endif /* _M68K_TLBFLUSH_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 05:10:49 -0500