irqchip: GICv3: rework redistributor structure

The basic GICv3 driver has almost no use for the redistributor
(other than the basic per-CPU interrupts), but the ITS needs
a lot more from them.

As such, rework the set of data structures. The behaviour of the
GICv3 driver is otherwise unaffected.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416839720-18400-4-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index 03a4ea37ba86..040615a48bf5 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -49,6 +49,10 @@
 #define GICD_CTLR_ENABLE_G1A            (1U << 1)
 #define GICD_CTLR_ENABLE_G1             (1U << 0)
 
+#define GICD_TYPER_ID_BITS(typer)       ((((typer) >> 19) & 0x1f) + 1)
+#define GICD_TYPER_IRQS(typer)          ((((typer) & 0x1f) + 1) * 32)
+#define GICD_TYPER_LPIS                 (1U << 17)
+
 #define GICD_IROUTER_SPI_MODE_ONE       (0U << 31)
 #define GICD_IROUTER_SPI_MODE_ANY       (1U << 31)
 
@@ -189,6 +193,17 @@
 
 #include <linux/stringify.h>
 
+struct rdists {
+        struct {
+                void __iomem    *rd_base;
+                struct page     *pend_page;
+                phys_addr_t     phys_base;
+        } __percpu              *rdist;
+        struct page             *prop_page;
+        int                     id_bits;
+        u64                     flags;
+};
+
 static inline void gic_write_eoir(u64 irq)
 {
         asm volatile("msr_s " __stringify(ICC_EOIR1_EL1) ", %0" : : "r" (irq));