[PATCH 32/55] irqchip/gic-v3: Refactor and add GICv3 definitions

Marc Zyngier
2016-07-22T17:28:49Z

From: Andre Przywara <andre.przywara@arm.com>

arm-gic-v3.h contains bit and register definitions for the GICv3 and ITS,
at least for the bits the we currently care about.
The ITS emulation needs more definitions, so add them and refactor
the memory attribute #defines to be more universally usable.
To avoid changing all users, we still provide some of the old definitons
defined with the help of the new macros.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
include/linux/irqchip/arm-gic-v3.h | 180 ++++++++++++++++++++++++-------------
1 file changed, 120 insertions(+), 60 deletions(-)

diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index bfbd707..9442be7 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -112,34 +112,60 @@
#define GICR_WAKER_ProcessorSleep (1U << 1)
#define GICR_WAKER_ChildrenAsleep (1U << 2)

-#define GICR_PROPBASER_NonShareable (0U << 10)
-#define GICR_PROPBASER_InnerShareable (1U << 10)
-#define GICR_PROPBASER_OuterShareable (2U << 10)
-#define GICR_PROPBASER_SHAREABILITY_MASK (3UL << 10)
-#define GICR_PROPBASER_nCnB (0U << 7)
-#define GICR_PROPBASER_nC (1U << 7)
-#define GICR_PROPBASER_RaWt (2U << 7)
-#define GICR_PROPBASER_RaWb (3U << 7)
-#define GICR_PROPBASER_WaWt (4U << 7)
-#define GICR_PROPBASER_WaWb (5U << 7)
-#define GICR_PROPBASER_RaWaWt (6U << 7)
-#define GICR_PROPBASER_RaWaWb (7U << 7)
-#define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7)
-#define GICR_PROPBASER_IDBITS_MASK (0x1f)
-
-#define GICR_PENDBASER_NonShareable (0U << 10)
-#define GICR_PENDBASER_InnerShareable (1U << 10)
-#define GICR_PENDBASER_OuterShareable (2U << 10)
-#define GICR_PENDBASER_SHAREABILITY_MASK (3UL << 10)
-#define GICR_PENDBASER_nCnB (0U << 7)
-#define GICR_PENDBASER_nC (1U << 7)
-#define GICR_PENDBASER_RaWt (2U << 7)
-#define GICR_PENDBASER_RaWb (3U << 7)
-#define GICR_PENDBASER_WaWt (4U << 7)
-#define GICR_PENDBASER_WaWb (5U << 7)
-#define GICR_PENDBASER_RaWaWt (6U << 7)
-#define GICR_PENDBASER_RaWaWb (7U << 7)
-#define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7)
+#define GIC_BASER_CACHE_nCnB 0ULL
+#define GIC_BASER_CACHE_SameAsInner 0ULL
+#define GIC_BASER_CACHE_nC 1ULL
+#define GIC_BASER_CACHE_RaWt 2ULL
+#define GIC_BASER_CACHE_RaWb 3ULL
+#define GIC_BASER_CACHE_WaWt 4ULL
+#define GIC_BASER_CACHE_WaWb 5ULL
+#define GIC_BASER_CACHE_RaWaWt 6ULL
+#define GIC_BASER_CACHE_RaWaWb 7ULL
+#define GIC_BASER_CACHE_MASK 7ULL
+#define GIC_BASER_NonShareable 0ULL
+#define GIC_BASER_InnerShareable 1ULL
+#define GIC_BASER_OuterShareable 2ULL
+#define GIC_BASER_SHAREABILITY_MASK 3ULL
+
+#define GIC_BASER_CACHEABILITY(reg, inner_outer, type) \
+ (GIC_BASER_CACHE_##type << reg##_##inner_outer##_CACHEABILITY_SHIFT)
+
+#define GIC_BASER_SHAREABILITY(reg, type) \
+ (GIC_BASER_##type << reg##_SHAREABILITY_SHIFT)
+
+#define GICR_PROPBASER_SHAREABILITY_SHIFT (10)
+#define GICR_PROPBASER_INNER_CACHEABILITY_SHIFT (7)
+#define GICR_PROPBASER_OUTER_CACHEABILITY_SHIFT (56)
+#define GICR_PROPBASER_SHAREABILITY_MASK \
+ GIC_BASER_SHAREABILITY(GICR_PROPBASER, SHAREABILITY_MASK)
+#define GICR_PROPBASER_INNER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, MASK)
+#define GICR_PROPBASER_OUTER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GICR_PROPBASER, OUTER, MASK)
+#define GICR_PROPBASER_CACHEABILITY_MASK GICR_PROPBASER_INNER_CACHEABILITY_MASK
+
+#define GICR_PROPBASER_InnerShareable \
+ GIC_BASER_SHAREABILITY(GICR_PROPBASER, InnerShareable)
+#define GICR_PROPBASER_nC GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, nC)
+#define GICR_PROPBASER_WaWb GIC_BASER_CACHEABILITY(GICR_PROPBASER, INNER, WaWb)
+#define GICR_PROPBASER_IDBITS_MASK (0x1f)
+
+#define GICR_PENDBASER_SHAREABILITY_SHIFT (10)
+#define GICR_PENDBASER_INNER_CACHEABILITY_SHIFT (7)
+#define GICR_PENDBASER_OUTER_CACHEABILITY_SHIFT (56)
+#define GICR_PENDBASER_SHAREABILITY_MASK \
+ GIC_BASER_SHAREABILITY(GICR_PENDBASER, SHAREABILITY_MASK)
+#define GICR_PENDBASER_INNER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, MASK)
+#define GICR_PENDBASER_OUTER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GICR_PENDBASER, OUTER, MASK)
+#define GICR_PENDBASER_CACHEABILITY_MASK GICR_PENDBASER_INNER_CACHEABILITY_MASK
+
+#define GICR_PENDBASER_InnerShareable \
+ GIC_BASER_SHAREABILITY(GICR_PENDBASER, InnerShareable)
+#define GICR_PENDBASER_nC GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, nC)
+#define GICR_PENDBASER_WaWb GIC_BASER_CACHEABILITY(GICR_PENDBASER, INNER, WaWb)
+#define GICR_PENDBASER_PTZ BIT_ULL(62)

/*
* Re-Distributor registers, offsets from SGI_base
@@ -175,59 +201,74 @@
#define GITS_CWRITER 0x0088
#define GITS_CREADR 0x0090
#define GITS_BASER 0x0100
+#define GITS_IDREGS_BASE 0xffd0
+#define GITS_PIDR0 0xffe0
+#define GITS_PIDR1 0xffe4
#define GITS_PIDR2 GICR_PIDR2
+#define GITS_PIDR4 0xffd0
+#define GITS_CIDR0 0xfff0
+#define GITS_CIDR1 0xfff4
+#define GITS_CIDR2 0xfff8
+#define GITS_CIDR3 0xfffc

#define GITS_TRANSLATER 0x10040

#define GITS_CTLR_ENABLE (1U << 0)
#define GITS_CTLR_QUIESCENT (1U << 31)

+#define GITS_TYPER_PLPIS (1UL << 0)
+#define GITS_TYPER_IDBITS_SHIFT 8
#define GITS_TYPER_DEVBITS_SHIFT 13
#define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1)
#define GITS_TYPER_PTA (1UL << 19)
-
-#define GITS_CBASER_VALID (1UL << 63)
-#define GITS_CBASER_nCnB (0UL << 59)
-#define GITS_CBASER_nC (1UL << 59)
-#define GITS_CBASER_RaWt (2UL << 59)
-#define GITS_CBASER_RaWb (3UL << 59)
-#define GITS_CBASER_WaWt (4UL << 59)
-#define GITS_CBASER_WaWb (5UL << 59)
-#define GITS_CBASER_RaWaWt (6UL << 59)
-#define GITS_CBASER_RaWaWb (7UL << 59)
-#define GITS_CBASER_CACHEABILITY_MASK (7UL << 59)
-#define GITS_CBASER_NonShareable (0UL << 10)
-#define GITS_CBASER_InnerShareable (1UL << 10)
-#define GITS_CBASER_OuterShareable (2UL << 10)
-#define GITS_CBASER_SHAREABILITY_MASK (3UL << 10)
+#define GITS_TYPER_HWCOLLCNT_SHIFT 24
+
+#define GITS_CBASER_VALID (1UL << 63)
+#define GITS_CBASER_SHAREABILITY_SHIFT (10)
+#define GITS_CBASER_INNER_CACHEABILITY_SHIFT (59)
+#define GITS_CBASER_OUTER_CACHEABILITY_SHIFT (53)
+#define GITS_CBASER_SHAREABILITY_MASK \
+ GIC_BASER_SHAREABILITY(GITS_CBASER, SHAREABILITY_MASK)
+#define GITS_CBASER_INNER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GITS_CBASER, INNER, MASK)
+#define GITS_CBASER_OUTER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GITS_CBASER, OUTER, MASK)
+#define GITS_CBASER_CACHEABILITY_MASK GITS_CBASER_INNER_CACHEABILITY_MASK
+
+#define GITS_CBASER_InnerShareable \
+ GIC_BASER_SHAREABILITY(GITS_CBASER, InnerShareable)
+#define GITS_CBASER_nC GIC_BASER_CACHEABILITY(GITS_CBASER, INNER, nC)
+#define GITS_CBASER_WaWb GIC_BASER_CACHEABILITY(GITS_CBASER, INNER, WaWb)

#define GITS_BASER_NR_REGS 8

-#define GITS_BASER_VALID (1UL << 63)
-#define GITS_BASER_nCnB (0UL << 59)
-#define GITS_BASER_nC (1UL << 59)
-#define GITS_BASER_RaWt (2UL << 59)
-#define GITS_BASER_RaWb (3UL << 59)
-#define GITS_BASER_WaWt (4UL << 59)
-#define GITS_BASER_WaWb (5UL << 59)
-#define GITS_BASER_RaWaWt (6UL << 59)
-#define GITS_BASER_RaWaWb (7UL << 59)
-#define GITS_BASER_CACHEABILITY_MASK (7UL << 59)
-#define GITS_BASER_TYPE_SHIFT (56)
+#define GITS_BASER_VALID (1UL << 63)
+#define GITS_BASER_INDIRECT (1ULL << 62)
+#define GITS_BASER_INNER_CACHEABILITY_SHIFT (59)
+#define GITS_BASER_OUTER_CACHEABILITY_SHIFT (53)
+#define GITS_BASER_INNER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GITS_BASER, INNER, MASK)
+#define GITS_BASER_OUTER_CACHEABILITY_MASK \
+ GIC_BASER_CACHEABILITY(GITS_BASER, OUTER, MASK)
+#define GITS_BASER_SHAREABILITY_MASK \
+ GIC_BASER_SHAREABILITY(GITS_BASER, SHAREABILITY_MASK)
+
+#define GITS_BASER_nC GIC_BASER_CACHEABILITY(GITS_BASER, INNER, nC)
+#define GITS_BASER_WaWb GIC_BASER_CACHEABILITY(GITS_BASER, INNER, WaWb)
+#define GITS_BASER_TYPE_SHIFT (56)
#define GITS_BASER_TYPE(r) (((r) >> GITS_BASER_TYPE_SHIFT) & 7)
-#define GITS_BASER_ENTRY_SIZE_SHIFT (48)
+#define GITS_BASER_ENTRY_SIZE_SHIFT (48)
#define GITS_BASER_ENTRY_SIZE(r) ((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0xff) + 1)
-#define GITS_BASER_NonShareable (0UL << 10)
-#define GITS_BASER_InnerShareable (1UL << 10)
-#define GITS_BASER_OuterShareable (2UL << 10)
#define GITS_BASER_SHAREABILITY_SHIFT (10)
-#define GITS_BASER_SHAREABILITY_MASK (3UL << GITS_BASER_SHAREABILITY_SHIFT)
+#define GITS_BASER_InnerShareable \
+ GIC_BASER_SHAREABILITY(GITS_BASER, InnerShareable)
#define GITS_BASER_PAGE_SIZE_SHIFT (8)
#define GITS_BASER_PAGE_SIZE_4K (0UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGE_SIZE_16K (1UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGE_SIZE_64K (2UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGE_SIZE_MASK (3UL << GITS_BASER_PAGE_SIZE_SHIFT)
#define GITS_BASER_PAGES_MAX 256
+#define GITS_BASER_NR_PAGES(r) (((r) & 0xff) + 1)

#define GITS_BASER_TYPE_NONE 0
#define GITS_BASER_TYPE_DEVICE 1
@@ -243,7 +284,10 @@
*/
#define GITS_CMD_MAPD 0x08
#define GITS_CMD_MAPC 0x09
-#define GITS_CMD_MAPVI 0x0a
+#define GITS_CMD_MAPTI 0x0a
+/* older GIC documentation used MAPVI for this command */
+#define GITS_CMD_MAPVI GITS_CMD_MAPTI
+#define GITS_CMD_MAPI 0x0b
#define GITS_CMD_MOVI 0x01
#define GITS_CMD_DISCARD 0x0f
#define GITS_CMD_INV 0x0c
@@ -254,6 +298,22 @@
#define GITS_CMD_SYNC 0x05

/*
+ * ITS error numbers
+ */
+#define E_ITS_MOVI_UNMAPPED_INTERRUPT 0x010107
+#define E_ITS_MOVI_UNMAPPED_COLLECTION 0x010109
+#define E_ITS_CLEAR_UNMAPPED_INTERRUPT 0x010507
+#define E_ITS_MAPD_DEVICE_OOR 0x010801
+#define E_ITS_MAPC_PROCNUM_OOR 0x010902
+#define E_ITS_MAPC_COLLECTION_OOR 0x010903
+#define E_ITS_MAPTI_UNMAPPED_DEVICE 0x010a04
+#define E_ITS_MAPTI_PHYSICALID_OOR 0x010a06
+#define E_ITS_INV_UNMAPPED_INTERRUPT 0x010c07
+#define E_ITS_INVALL_UNMAPPED_COLLECTION 0x010d09
+#define E_ITS_MOVALL_PROCNUM_OOR 0x010e01
+#define E_ITS_DISCARD_UNMAPPED_INTERRUPT 0x010f07
+
+/*
* CPU interface registers
*/
#define ICC_CTLR_EL1_EOImode_drop_dir (0U << 1)
--
2.8.1