The Power ISA 2.06 added power of two page sizes to the embedded MMU
architecture. Its done it such a way to be code compatiable with the
existing HW. Made the minor code changes to support both power of two
and power of four page sizes. Also added some new MAS bits and macros
that are defined as part of the 2.06 ISA.
Note, its still invalid to try and use a page size that isn't supported
by cpu.
Signed-off-by: Kumar Gala <ga...@kernel.crashing.org>
---
* Fixed MAS6_ISIZE macro
arch/powerpc/include/asm/mmu-fsl-booke.h | 54 ++++++++++++++++++++----------
arch/powerpc/kernel/head_fsl_booke.S | 2 +-
arch/powerpc/mm/fsl_booke_mmu.c | 2 +-
3 files changed, 38 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu-fsl-booke.h
b/arch/powerpc/include/asm/mmu-fsl-booke.h
index 3f941c0..e69a165 100644
--- a/arch/powerpc/include/asm/mmu-fsl-booke.h
+++ b/arch/powerpc/include/asm/mmu-fsl-booke.h
@@ -6,21 +6,37 @@
/* Book-E defined page sizes */
#define BOOKE_PAGESZ_1K 0
-#define BOOKE_PAGESZ_4K 1
-#define BOOKE_PAGESZ_16K 2
-#define BOOKE_PAGESZ_64K 3
-#define BOOKE_PAGESZ_256K 4
-#define BOOKE_PAGESZ_1M 5
-#define BOOKE_PAGESZ_4M 6
-#define BOOKE_PAGESZ_16M 7
-#define BOOKE_PAGESZ_64M 8
-#define BOOKE_PAGESZ_256M 9
-#define BOOKE_PAGESZ_1GB 10
-#define BOOKE_PAGESZ_4GB 11
-#define BOOKE_PAGESZ_16GB 12
-#define BOOKE_PAGESZ_64GB 13
-#define BOOKE_PAGESZ_256GB 14
-#define BOOKE_PAGESZ_1TB 15
+#define BOOKE_PAGESZ_2K 1
+#define BOOKE_PAGESZ_4K 2
+#define BOOKE_PAGESZ_8K 3
+#define BOOKE_PAGESZ_16K 4
+#define BOOKE_PAGESZ_32K 5
+#define BOOKE_PAGESZ_64K 6
+#define BOOKE_PAGESZ_128K 7
+#define BOOKE_PAGESZ_256K 8
+#define BOOKE_PAGESZ_512K 9
+#define BOOKE_PAGESZ_1M 10
+#define BOOKE_PAGESZ_2M 11
+#define BOOKE_PAGESZ_4M 12
+#define BOOKE_PAGESZ_8M 13
+#define BOOKE_PAGESZ_16M 14
+#define BOOKE_PAGESZ_32M 15
+#define BOOKE_PAGESZ_64M 16
+#define BOOKE_PAGESZ_128M 17
+#define BOOKE_PAGESZ_256M 18
+#define BOOKE_PAGESZ_512M 19
+#define BOOKE_PAGESZ_1GB 20
+#define BOOKE_PAGESZ_2GB 21
+#define BOOKE_PAGESZ_4GB 22
+#define BOOKE_PAGESZ_8GB 23
+#define BOOKE_PAGESZ_16GB 24
+#define BOOKE_PAGESZ_32GB 25
+#define BOOKE_PAGESZ_64GB 26
+#define BOOKE_PAGESZ_128GB 27
+#define BOOKE_PAGESZ_256GB 28
+#define BOOKE_PAGESZ_512GB 29
+#define BOOKE_PAGESZ_1TB 30
+#define BOOKE_PAGESZ_2TB 31
#define MAS0_TLBSEL(x) ((x << 28) & 0x30000000)
#define MAS0_ESEL(x) ((x << 16) & 0x0FFF0000)
@@ -29,8 +45,9 @@
#define MAS1_VALID 0x80000000
#define MAS1_IPROT 0x40000000
#define MAS1_TID(x) ((x << 16) & 0x3FFF0000)
+#define MAS1_IND 0x00002000
#define MAS1_TS 0x00001000
-#define MAS1_TSIZE(x) ((x << 8) & 0x00000F00)
+#define MAS1_TSIZE(x) ((x << 7) & 0x00000F80)
#define MAS2_EPN 0xFFFFF000
#define MAS2_X0 0x00000040
@@ -40,7 +57,7 @@
#define MAS2_M 0x00000004
#define MAS2_G 0x00000002
#define MAS2_E 0x00000001
-#define MAS2_EPN_MASK(size) (~0 << (2*(size) + 10))
+#define MAS2_EPN_MASK(size) (~0 << (size + 10))
#define MAS2_VAL(addr, size, flags) ((addr) & MAS2_EPN_MASK(size) | (flags))
#define MAS3_RPN 0xFFFFF000
@@ -56,7 +73,7 @@
#define MAS3_SR 0x00000001
#define MAS4_TLBSELD(x) MAS0_TLBSEL(x)
-#define MAS4_TIDDSEL 0x000F0000
+#define MAS4_INDD 0x00008000
#define MAS4_TSIZED(x) MAS1_TSIZE(x)
#define MAS4_X0D 0x00000040
#define MAS4_X1D 0x00000020
@@ -68,6 +85,7 @@
#define MAS6_SPID0 0x3FFF0000
#define MAS6_SPID1 0x00007FFE
+#define MAS6_ISIZE(x) MAS1_TSIZE(x)
#define MAS6_SAS 0x00000001
#define MAS6_SPID MAS6_SPID0
diff --git a/arch/powerpc/kernel/head_fsl_booke.S
b/arch/powerpc/kernel/head_fsl_booke.S
index 64ecb16..7f49af7 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -173,7 +173,7 @@ skpinv: addi r6,r6,1 /*
Increment */
/* grab and fixup the RPN */
mfspr r6,SPRN_MAS1 /* extract MAS1[SIZE] */
- rlwinm r6,r6,25,27,30
+ rlwinm r6,r6,25,27,31
li r8,-1
addi r6,r6,10
slw r6,r8,r6 /* convert to mask */
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index 0b9ba6b..54f3631 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -111,7 +111,7 @@ void settlbcam(int index, unsigned long virt, phys_addr_t
phys,
unsigned int tsize, lz;
asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size));
- tsize = (21 - lz) / 2;
+ tsize = 21 - lz;
#ifdef CONFIG_SMP
if ((flags & _PAGE_NO_CACHE) == 0)
--
1.5.6.6
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