*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
* @OSF_COPYRIGHT@
*/
-#include <cpus.h>
-
#include <ppc/asm.h>
#include <ppc/proc_reg.h>
-#include <cpus.h>
+#include <ppc/exception.h>
#include <assym.s>
-#include <mach_debug.h>
-#include <mach/ppc/vm_param.h>
-/*
- * extern void sync_cache(vm_offset_t pa, unsigned count);
- *
- * sync_cache takes a physical address and count to sync, thus
- * must not be called for multiple virtual pages.
- *
- * it writes out the data cache and invalidates the instruction
- * cache for the address range in question
+/* These routines run in 32 or 64-bit addressing, and handle
+ * 32 and 128 byte caches. They do not use compare instructions
+ * on addresses, since compares are 32/64-bit-mode-specific.
*/
-ENTRY(sync_cache, TAG_NO_FRAME_USED)
-
- /* Switch off data translations */
- mfmsr r6
- rlwinm r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off
- rlwinm r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off
- rlwinm r7, r6, 0, MSR_DR_BIT+1, MSR_DR_BIT-1
- mtmsr r7
- isync
-
- /* Check to see if the address is aligned. */
- add r8, r3,r4
- andi. r8,r8,(CACHE_LINE_SIZE-1)
- beq- .L_sync_check
- addi r4,r4,CACHE_LINE_SIZE
- li r7,(CACHE_LINE_SIZE-1) /* Align buffer & count - avoid overflow problems */
- andc r4,r4,r7
- andc r3,r3,r7
-
-.L_sync_check:
- cmpwi r4, CACHE_LINE_SIZE
- ble .L_sync_one_line
-
- /* Make ctr hold count of how many times we should loop */
- addi r8, r4, (CACHE_LINE_SIZE-1)
- srwi r8, r8, CACHE_LINE_POW2
- mtctr r8
+#define kDcbf 0x1
+#define kDcbfb 31
+#define kDcbi 0x2
+#define kDcbib 30
+#define kIcbi 0x4
+#define kIcbib 29
- /* loop to flush the data cache */
-.L_sync_data_loop:
- subic r4, r4, CACHE_LINE_SIZE
- dcbf r3, r4
- bdnz .L_sync_data_loop
-
- sync
- mtctr r8
-
- /* loop to invalidate the instruction cache */
-.L_sync_inval_loop:
- icbi r3, r4
- addic r4, r4, CACHE_LINE_SIZE
- bdnz .L_sync_inval_loop
-
-.L_sync_cache_done:
- sync /* Finish physical writes */
- mtmsr r6 /* Restore original translations */
- isync /* Ensure data translations are on */
- blr
-
-.L_sync_one_line:
- dcbf 0,r3
- sync
- icbi 0,r3
- b .L_sync_cache_done
/*
* extern void flush_dcache(vm_offset_t addr, unsigned count, boolean phys);
+ * extern void flush_dcache64(addr64_t addr, unsigned count, boolean phys);
*
* flush_dcache takes a virtual or physical address and count to flush
* and (can be called for multiple virtual pages).
* if 'phys' is non-zero then physical addresses will be used
*/
-ENTRY(flush_dcache, TAG_NO_FRAME_USED)
-
- /* optionally switch off data translations */
-
- cmpwi r5, 0
- mfmsr r6
- beq+ 0f
- rlwinm r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off
- rlwinm r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off
- rlwinm r7, r6, 0, MSR_DR_BIT+1, MSR_DR_BIT-1
- mtmsr r7
- isync
-0:
-
- /* Check to see if the address is aligned. */
- add r8, r3,r4
- andi. r8,r8,(CACHE_LINE_SIZE-1)
- beq- .L_flush_dcache_check
- addi r4,r4,CACHE_LINE_SIZE
- li r7,(CACHE_LINE_SIZE-1) /* Align buffer & count - avoid overflow problems */
- andc r4,r4,r7
- andc r3,r3,r7
-.L_flush_dcache_check:
- cmpwi r4, CACHE_LINE_SIZE
- ble .L_flush_dcache_one_line
-
- /* Make ctr hold count of how many times we should loop */
- addi r8, r4, (CACHE_LINE_SIZE-1)
- srwi r8, r8, CACHE_LINE_POW2
- mtctr r8
+
+ .text
+ .align 5
+ .globl _flush_dcache
+_flush_dcache:
+ li r0,kDcbf // use DCBF instruction
+ rlwinm r3,r3,0,0,31 // truncate address in case this is a 64-bit machine
+ b cache_op_join // join common code
-.L_flush_dcache_flush_loop:
- subic r4, r4, CACHE_LINE_SIZE
- dcbf r3, r4
- bdnz .L_flush_dcache_flush_loop
-
-.L_flush_dcache_done:
- /* Sync restore msr if it was modified */
- cmpwi r5, 0
- sync /* make sure invalidates have completed */
- beq+ 0f
- mtmsr r6 /* Restore original translations */
- isync /* Ensure data translations are on */
-0:
- blr
-
-.L_flush_dcache_one_line:
- xor r4,r4,r4
- dcbf 0,r3
- b .L_flush_dcache_done
+ .align 5
+ .globl _flush_dcache64
+_flush_dcache64:
+ rlwinm r3,r3,0,1,0 ; Duplicate high half of long long paddr into top of reg
+ li r0,kDcbf // use DCBF instruction
+ rlwimi r3,r4,0,0,31 ; Combine bottom of long long to full 64-bits
+ mr r4,r5 ; Move count
+ mr r5,r6 ; Move physical flag
+ b cache_op_join // join common code
/*
* extern void invalidate_dcache(vm_offset_t va, unsigned count, boolean phys);
+ * extern void invalidate_dcache64(addr64_t va, unsigned count, boolean phys);
*
* invalidate_dcache takes a virtual or physical address and count to
* invalidate and (can be called for multiple virtual pages).
*
* it invalidates the data cache for the address range in question
*/
-
-ENTRY(invalidate_dcache, TAG_NO_FRAME_USED)
-
- /* optionally switch off data translations */
-
- cmpwi r5, 0
- mfmsr r6
- beq+ 0f
- rlwinm r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off
- rlwinm r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off
- rlwinm r7, r6, 0, MSR_DR_BIT+1, MSR_DR_BIT-1
- mtmsr r7
- isync
-0:
-
- /* Check to see if the address is aligned. */
- add r8, r3,r4
- andi. r8,r8,(CACHE_LINE_SIZE-1)
- beq- .L_invalidate_dcache_check
- addi r4,r4,CACHE_LINE_SIZE
- li r7,(CACHE_LINE_SIZE-1) /* Align buffer & count - avoid overflow problems */
- andc r4,r4,r7
- andc r3,r3,r7
-
-.L_invalidate_dcache_check:
- cmpwi r4, CACHE_LINE_SIZE
- ble .L_invalidate_dcache_one_line
-
- /* Make ctr hold count of how many times we should loop */
- addi r8, r4, (CACHE_LINE_SIZE-1)
- srwi r8, r8, CACHE_LINE_POW2
- mtctr r8
-
-.L_invalidate_dcache_invalidate_loop:
- subic r4, r4, CACHE_LINE_SIZE
- dcbi r3, r4
- bdnz .L_invalidate_dcache_invalidate_loop
-
-.L_invalidate_dcache_done:
- /* Sync restore msr if it was modified */
- cmpwi r5, 0
- sync /* make sure invalidates have completed */
- beq+ 0f
- mtmsr r6 /* Restore original translations */
- isync /* Ensure data translations are on */
-0:
- blr
-
-.L_invalidate_dcache_one_line:
- xor r4,r4,r4
- dcbi 0,r3
- b .L_invalidate_dcache_done
+
+ .globl _invalidate_dcache
+_invalidate_dcache:
+ li r0,kDcbi // use DCBI instruction
+ rlwinm r3,r3,0,0,31 // truncate address in case this is a 64-bit machine
+ b cache_op_join // join common code
+
+
+ .align 5
+ .globl _invalidate_dcache64
+_invalidate_dcache64:
+ rlwinm r3,r3,0,1,0 ; Duplicate high half of long long paddr into top of reg
+ li r0,kDcbi // use DCBI instruction
+ rlwimi r3,r4,0,0,31 ; Combine bottom of long long to full 64-bits
+ mr r4,r5 ; Move count
+ mr r5,r6 ; Move physical flag
+ b cache_op_join // join common code
/*
* extern void invalidate_icache(vm_offset_t addr, unsigned cnt, boolean phys);
+ * extern void invalidate_icache64(addr64_t addr, unsigned cnt, boolean phys);
*
* invalidate_icache takes a virtual or physical address and
* count to invalidate, (can be called for multiple virtual pages).
*
* it invalidates the instruction cache for the address range in question.
+ */
+
+ .globl _invalidate_icache
+_invalidate_icache:
+ li r0,kIcbi // use ICBI instruction
+ rlwinm r3,r3,0,0,31 // truncate address in case this is a 64-bit machine
+ b cache_op_join // join common code
+
+
+ .align 5
+ .globl _invalidate_icache64
+_invalidate_icache64:
+ rlwinm r3,r3,0,1,0 ; Duplicate high half of long long paddr into top of reg
+ li r0,kIcbi // use ICBI instruction
+ rlwimi r3,r4,0,0,31 ; Combine bottom of long long to full 64-bits
+ mr r4,r5 ; Move count
+ mr r5,r6 ; Move physical flag
+ b cache_op_join // join common code
+
+/*
+ * extern void sync_ppage(ppnum_t pa);
+ *
+ * sync_ppage takes a physical page number
+ *
+ * it writes out the data cache and invalidates the instruction
+ * cache for the address range in question
*/
-ENTRY(invalidate_icache, TAG_NO_FRAME_USED)
-
- /* optionally switch off data translations */
- cmpwi r5, 0
- mfmsr r6
- beq+ 0f
- rlwinm r6,r6,0,MSR_FP_BIT+1,MSR_FP_BIT-1 ; Force floating point off
- rlwinm r6,r6,0,MSR_VEC_BIT+1,MSR_VEC_BIT-1 ; Force vectors off
- rlwinm r7, r6, 0, MSR_DR_BIT+1, MSR_DR_BIT-1
- mtmsr r7
- isync
-0:
-
- /* Check to see if the address is aligned. */
- add r8, r3,r4
- andi. r8,r8,(CACHE_LINE_SIZE-1)
- beq- .L_invalidate_icache_check
- addi r4,r4,CACHE_LINE_SIZE
- li r7,(CACHE_LINE_SIZE-1) /* Align buffer & count - avoid overflow problems */
- andc r4,r4,r7
- andc r3,r3,r7
+ .globl _sync_ppage
+ .align 5
+_sync_ppage: // Should be the most commonly called routine, by far
+ mfsprg r2,2
+ li r0,kDcbf+kIcbi // we need to dcbf and then icbi
+ mtcrf 0x02,r2 ; Move pf64Bit to cr6
+ li r5,1 // set flag for physical addresses
+ li r4,4096 ; Set page size
+ bt++ pf64Bitb,spp64 ; Skip if 64-bit (only they take the hint)
+ rlwinm r3,r3,12,0,19 ; Convert to physical address - 32-bit
+ b cache_op_join ; Join up....
+
+spp64: sldi r3,r3,12 ; Convert to physical address - 64-bit
+ b cache_op_join ; Join up....
+
-.L_invalidate_icache_check:
- cmpwi r4, CACHE_LINE_SIZE
- ble .L_invalidate_icache_one_line
-
- /* Make ctr hold count of how many times we should loop */
- addi r8, r4, (CACHE_LINE_SIZE-1)
- srwi r8, r8, CACHE_LINE_POW2
- mtctr r8
-.L_invalidate_icache_invalidate_loop:
- subic r4, r4, CACHE_LINE_SIZE
- icbi r3, r4
- bdnz .L_invalidate_icache_invalidate_loop
+/*
+ * extern void sync_cache_virtual(vm_offset_t addr, unsigned count);
+ *
+ * Like "sync_cache", except it takes a virtual address and byte count.
+ * It flushes the data cache, invalidates the I cache, and sync's.
+ */
+
+ .globl _sync_cache_virtual
+ .align 5
+_sync_cache_virtual:
+ li r0,kDcbf+kIcbi // we need to dcbf and then icbi
+ li r5,0 // set flag for virtual addresses
+ b cache_op_join // join common code
+
+
+/*
+ * extern void sync_cache(vm_offset_t pa, unsigned count);
+ * extern void sync_cache64(addr64_t pa, unsigned count);
+ *
+ * sync_cache takes a physical address and count to sync, thus
+ * must not be called for multiple virtual pages.
+ *
+ * it writes out the data cache and invalidates the instruction
+ * cache for the address range in question
+ */
-.L_invalidate_icache_done:
- sync /* make sure invalidates have completed */
- mtmsr r6 /* Restore original translations */
- isync /* Ensure data translations are on */
- blr
+ .globl _sync_cache
+ .align 5
+_sync_cache:
+ li r0,kDcbf+kIcbi // we need to dcbf and then icbi
+ li r5,1 // set flag for physical addresses
+ rlwinm r3,r3,0,0,31 // truncate address in case this is a 64-bit machine
+ b cache_op_join // join common code
+
+ .globl _sync_cache64
+ .align 5
+_sync_cache64:
+ rlwinm r3,r3,0,1,0 ; Duplicate high half of long long paddr into top of reg
+ li r0,kDcbf+kIcbi // we need to dcbf and then icbi
+ rlwimi r3,r4,0,0,31 ; Combine bottom of long long to full 64-bits
+ mr r4,r5 ; Copy over the length
+ li r5,1 // set flag for physical addresses
+
+
+ // Common code to handle the cache operations.
+
+cache_op_join: // here with r3=addr, r4=count, r5=phys flag, r0=bits
+ mfsprg r10,2 // r10 <- processor feature flags
+ cmpwi cr5,r5,0 // using physical addresses?
+ mtcrf 0x01,r0 // move kDcbf, kDcbi, and kIcbi bits to CR7
+ andi. r9,r10,pf32Byte+pf128Byte // r9 <- cache line size
+ mtcrf 0x02,r10 // move pf64Bit bit to CR6
+ subi r8,r9,1 // r8 <- (linesize-1)
+ beq-- cr5,cache_op_2 // skip if using virtual addresses
+
+ bf-- pf64Bitb,cache_op_not64 // This is not a 64-bit machine
+
+ srdi r12,r3,31 // Slide bit 32 to bit 63
+ cmpldi r12,1 // Are we in the I/O mapped area?
+ beqlr-- // No cache ops allowed here...
+
+cache_op_not64:
+ mflr r12 // save return address
+ bl EXT(ml_set_physical) // turn on physical addressing
+ mtlr r12 // restore return address
+
+ // get r3=first cache line, r4=first line not in set, r6=byte count
+
+cache_op_2:
+ add r7,r3,r4 // point to 1st byte not to operate on
+ andc r3,r3,r8 // r3 <- 1st line to operate on
+ add r4,r7,r8 // round up
+ andc r4,r4,r8 // r4 <- 1st line not to operate on
+ sub. r6,r4,r3 // r6 <- byte count to operate on
+ beq-- cache_op_exit // nothing to do
+ bf-- kDcbfb,cache_op_6 // no need to dcbf
+
+
+ // DCBF loop
+
+cache_op_5:
+ sub. r6,r6,r9 // more to go?
+ dcbf r6,r3 // flush next line to RAM
+ bne cache_op_5 // loop if more to go
+ sync // make sure the data reaches RAM
+ sub r6,r4,r3 // reset count
+
+
+ // ICBI loop
+
+cache_op_6:
+ bf-- kIcbib,cache_op_8 // no need to icbi
+cache_op_7:
+ sub. r6,r6,r9 // more to go?
+ icbi r6,r3 // invalidate next line
+ bne cache_op_7
+ sub r6,r4,r3 // reset count
+ isync
+ sync
+
+
+ // DCBI loop
+
+cache_op_8:
+ bf++ kDcbib,cache_op_exit // no need to dcbi
+cache_op_9:
+ sub. r6,r6,r9 // more to go?
+ dcbi r6,r3 // invalidate next line
+ bne cache_op_9
+ sync
+
+
+ // restore MSR iff necessary and done
+
+cache_op_exit:
+ beqlr-- cr5 // if using virtual addresses, no need to restore MSR
+ b EXT(ml_restore) // restore MSR and return
-.L_invalidate_icache_one_line:
- xor r4,r4,r4
- icbi 0,r3
- b .L_invalidate_icache_done
projects / apple / xnu.git / blobdiff