[PATCH 01/17] arm64: Reuse TCR field definitions for EL1 and EL2

From: Suzuki K Poulose
Date: Mon Apr 04 2016 - 12:32:48 EST

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TCR_EL1, TCR_EL2 and VTCR_EL2, all share some field positions
(TG0, ORGN0, IRGN0 and SH0) and their corresponding value definitions.

This patch makes the TCR_EL1 definitions reusable and uses them for TCR_EL2
and VTCR_EL2 fields.

This also fixes a bug where TG0 in {V}TCR_EL2 was treated as 1bit field.

Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
---
arch/arm64/include/asm/kvm_arm.h | 48 ++++++++++---------
arch/arm64/include/asm/pgtable-hwdef.h | 80 +++++++++++++++++++++++++-------
2 files changed, 88 insertions(+), 40 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 4150fd8..c460cfe 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -96,32 +96,34 @@
SCTLR_EL2_SA | SCTLR_EL2_I)

/* TCR_EL2 Registers bits */
-#define TCR_EL2_RES1 ((1 << 31) | (1 << 23))
-#define TCR_EL2_TBI (1 << 20)
-#define TCR_EL2_PS (7 << 16)
-#define TCR_EL2_PS_40B (2 << 16)
-#define TCR_EL2_TG0 (1 << 14)
-#define TCR_EL2_SH0 (3 << 12)
-#define TCR_EL2_ORGN0 (3 << 10)
-#define TCR_EL2_IRGN0 (3 << 8)
-#define TCR_EL2_T0SZ 0x3f
-#define TCR_EL2_MASK (TCR_EL2_TG0 | TCR_EL2_SH0 | \
- TCR_EL2_ORGN0 | TCR_EL2_IRGN0 | TCR_EL2_T0SZ)
+#define TCR_EL2_RES1 ((1 << 31) | (1 << 23))
+#define TCR_EL2_TBI (1 << 20)
+#define TCR_EL2_PS_SHIFT 16
+#define TCR_EL2_PS_MASK (7 << TCR_EL2_PS_SHIFT)
+#define TCR_EL2_PS_40B (2 << TCR_EL2_PS_SHIFT)
+#define TCR_EL2_TG0_MASK TCR_TG0_MASK
+#define TCR_EL2_SH0_MASK TCR_SH0_MASK
+#define TCR_EL2_ORGN0_MASK TCR_ORGN0_MASK
+#define TCR_EL2_IRGN0_MASK TCR_IRGN0_MASK
+#define TCR_EL2_T0SZ_MASK 0x3f
+#define TCR_EL2_MASK (TCR_EL2_TG0_MASK | TCR_EL2_SH0_MASK | \
+ TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK | TCR_EL2_T0SZ_MASK)

/* VTCR_EL2 Registers bits */
#define VTCR_EL2_RES1 (1 << 31)
-#define VTCR_EL2_PS_MASK (7 << 16)
-#define VTCR_EL2_TG0_MASK (1 << 14)
-#define VTCR_EL2_TG0_4K (0 << 14)
-#define VTCR_EL2_TG0_64K (1 << 14)
-#define VTCR_EL2_SH0_MASK (3 << 12)
-#define VTCR_EL2_SH0_INNER (3 << 12)
-#define VTCR_EL2_ORGN0_MASK (3 << 10)
-#define VTCR_EL2_ORGN0_WBWA (1 << 10)
-#define VTCR_EL2_IRGN0_MASK (3 << 8)
-#define VTCR_EL2_IRGN0_WBWA (1 << 8)
-#define VTCR_EL2_SL0_MASK (3 << 6)
-#define VTCR_EL2_SL0_LVL1 (1 << 6)
+#define VTCR_EL2_PS_MASK TCR_EL2_PS_MASK
+#define VTCR_EL2_TG0_MASK TCR_TG0_MASK
+#define VTCR_EL2_TG0_4K TCR_TG0_4K
+#define VTCR_EL2_TG0_64K TCR_TG0_64K
+#define VTCR_EL2_SH0_MASK TCR_SH0_MASK
+#define VTCR_EL2_SH0_INNER TCR_SH0_INNER
+#define VTCR_EL2_ORGN0_MASK TCR_ORGN0_MASK
+#define VTCR_EL2_ORGN0_WBWA TCR_ORGN0_WBWA
+#define VTCR_EL2_IRGN0_MASK TCR_IRGN0_MASK
+#define VTCR_EL2_IRGN0_WBWA TCR_IRGN0_WBWA
+#define VTCR_EL2_SL0_SHIFT 6
+#define VTCR_EL2_SL0_MASK (3 << VTCR_EL2_SL0_SHIFT)
+#define VTCR_EL2_SL0_LVL1 (1 << VTCR_EL2_SL0_SHIFT)
#define VTCR_EL2_T0SZ_MASK 0x3f
#define VTCR_EL2_T0SZ_40B 24
#define VTCR_EL2_VS_SHIFT 19
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
index 5c25b83..936f173 100644
--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -208,23 +208,69 @@
#define TCR_T1SZ(x) ((UL(64) - (x)) << TCR_T1SZ_OFFSET)
#define TCR_TxSZ(x) (TCR_T0SZ(x) | TCR_T1SZ(x))
#define TCR_TxSZ_WIDTH 6
-#define TCR_IRGN_NC ((UL(0) << 8) | (UL(0) << 24))
-#define TCR_IRGN_WBWA ((UL(1) << 8) | (UL(1) << 24))
-#define TCR_IRGN_WT ((UL(2) << 8) | (UL(2) << 24))
-#define TCR_IRGN_WBnWA ((UL(3) << 8) | (UL(3) << 24))
-#define TCR_IRGN_MASK ((UL(3) << 8) | (UL(3) << 24))
-#define TCR_ORGN_NC ((UL(0) << 10) | (UL(0) << 26))
-#define TCR_ORGN_WBWA ((UL(1) << 10) | (UL(1) << 26))
-#define TCR_ORGN_WT ((UL(2) << 10) | (UL(2) << 26))
-#define TCR_ORGN_WBnWA ((UL(3) << 10) | (UL(3) << 26))
-#define TCR_ORGN_MASK ((UL(3) << 10) | (UL(3) << 26))
-#define TCR_SHARED ((UL(3) << 12) | (UL(3) << 28))
-#define TCR_TG0_4K (UL(0) << 14)
-#define TCR_TG0_64K (UL(1) << 14)
-#define TCR_TG0_16K (UL(2) << 14)
-#define TCR_TG1_16K (UL(1) << 30)
-#define TCR_TG1_4K (UL(2) << 30)
-#define TCR_TG1_64K (UL(3) << 30)
+
+#define TCR_IRGN0_SHIFT 8
+#define TCR_IRGN0_MASK (UL(3) << TCR_IRGN0_SHIFT)
+#define TCR_IRGN0_NC (UL(0) << TCR_IRGN0_SHIFT)
+#define TCR_IRGN0_WBWA (UL(1) << TCR_IRGN0_SHIFT)
+#define TCR_IRGN0_WT (UL(2) << TCR_IRGN0_SHIFT)
+#define TCR_IRGN0_WBnWA (UL(3) << TCR_IRGN0_SHIFT)
+
+#define TCR_IRGN1_SHIFT 24
+#define TCR_IRGN1_MASK (UL(3) << TCR_IRGN1_SHIFT)
+#define TCR_IRGN1_NC (UL(0) << TCR_IRGN1_SHIFT)
+#define TCR_IRGN1_WBWA (UL(1) << TCR_IRGN1_SHIFT)
+#define TCR_IRGN1_WT (UL(2) << TCR_IRGN1_SHIFT)
+#define TCR_IRGN1_WBnWA (UL(3) << TCR_IRGN1_SHIFT)
+
+#define TCR_IRGN_NC (TCR_IRGN0_NC | TCR_IRGN1_NC)
+#define TCR_IRGN_WBWA (TCR_IRGN0_WBWA | TCR_IRGN1_WBWA)
+#define TCR_IRGN_WT (TCR_IRGN0_WT | TCR_IRGN1_WT)
+#define TCR_IRGN_WBnWA (TCR_IRGN0_WBnWA | TCR_IRGN1_WBnWA)
+#define TCR_IRGN_MASK (TCR_IRGN0_MASK | TCR_IRGN1_MASK)
+
+
+#define TCR_ORGN0_SHIFT 10
+#define TCR_ORGN0_MASK (UL(3) << TCR_ORGN0_SHIFT)
+#define TCR_ORGN0_NC (UL(0) << TCR_ORGN0_SHIFT)
+#define TCR_ORGN0_WBWA (UL(1) << TCR_ORGN0_SHIFT)
+#define TCR_ORGN0_WT (UL(2) << TCR_ORGN0_SHIFT)
+#define TCR_ORGN0_WBnWA (UL(3) << TCR_ORGN0_SHIFT)
+
+#define TCR_ORGN1_SHIFT 26
+#define TCR_ORGN1_MASK (UL(3) << TCR_ORGN1_SHIFT)
+#define TCR_ORGN1_NC (UL(0) << TCR_ORGN1_SHIFT)
+#define TCR_ORGN1_WBWA (UL(1) << TCR_ORGN1_SHIFT)
+#define TCR_ORGN1_WT (UL(2) << TCR_ORGN1_SHIFT)
+#define TCR_ORGN1_WBnWA (UL(3) << TCR_ORGN1_SHIFT)
+
+#define TCR_ORGN_NC (TCR_ORGN0_NC | TCR_ORGN1_NC)
+#define TCR_ORGN_WBWA (TCR_ORGN0_WBWA | TCR_ORGN1_WBWA)
+#define TCR_ORGN_WT (TCR_ORGN0_WT | TCR_ORGN1_WT)
+#define TCR_ORGN_WBnWA (TCR_ORGN0_WBnWA | TCR_ORGN1_WBnWA)
+#define TCR_ORGN_MASK (TCR_ORGN0_MASK | TCR_ORGN1_MASK)
+
+#define TCR_SH0_SHIFT 12
+#define TCR_SH0_MASK (UL(3) << TCR_SH0_SHIFT)
+#define TCR_SH0_INNER (UL(3) << TCR_SH0_SHIFT)
+
+#define TCR_SH1_SHIFT 28
+#define TCR_SH1_MASK (UL(3) << TCR_SH1_SHIFT)
+#define TCR_SH1_INNER (UL(3) << TCR_SH1_SHIFT)
+#define TCR_SHARED (TCR_SH0_INNER | TCR_SH1_INNER)
+
+#define TCR_TG0_SHIFT 14
+#define TCR_TG0_MASK (UL(3) << TCR_TG0_SHIFT)
+#define TCR_TG0_4K (UL(0) << TCR_TG0_SHIFT)
+#define TCR_TG0_64K (UL(1) << TCR_TG0_SHIFT)
+#define TCR_TG0_16K (UL(2) << TCR_TG0_SHIFT)
+
+#define TCR_TG1_SHIFT 30
+#define TCR_TG1_MASK (UL(3) << TCR_TG1_SHIFT)
+#define TCR_TG1_16K (UL(1) << TCR_TG1_SHIFT)
+#define TCR_TG1_4K (UL(2) << TCR_TG1_SHIFT)
+#define TCR_TG1_64K (UL(3) << TCR_TG1_SHIFT)
+
#define TCR_ASID16 (UL(1) << 36)
#define TCR_TBI0 (UL(1) << 37)
#define TCR_HA (UL(1) << 39)
--
1.7.9.5

Next message: David Vrabel: "Re: [Xen-devel] [PATCH v5 7/9] x86/paravirt: Add paravirt_{read, write}_msr"
Previous message: David Vrabel: "Re: [Xen-devel] [PATCH] xen: Add comment for missing FROZEN notifier transitions"
In reply to: Suzuki K Poulose: "[PATCH 03/17] kvm arm: Move fake PGD handling to arch specific files"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]