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authorPaul Burton <paul.burton@imgtec.com>2016-02-03 03:15:28 +0000
committerRalf Baechle <ralf@linux-mips.org>2016-05-13 14:01:49 +0200
commit835d2b452969820fd67a755a2c01fb6e12822448 (patch)
treed4b3caf048b0a3cf288c20935ba28dda2c7f850a /drivers/irqchip
parentd46812bb0bef04efa4e6cba677ba54c2e4f1ae59 (diff)
irqchip: mips-gic: Provide VP ID accessor
Provide a gic_read_local_vp_id() function to read the VCNUM field of the GICs local VP_IDENT register. This will be used by a further patch to check that the value reported by the GIC matches up with the kernels calculation. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: James Hogan <james.hogan@imgtec.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12334/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-mips-gic.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index e28311f237f5..c089f49b63fb 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -246,6 +246,14 @@ void gic_stop_count(void)
#endif
+unsigned gic_read_local_vp_id(void)
+{
+ unsigned long ident;
+
+ ident = gic_read(GIC_REG(VPE_LOCAL, GIC_VP_IDENT));
+ return ident & GIC_VP_IDENT_VCNUM_MSK;
+}
+
static bool gic_local_irq_is_routable(int intr)
{
u32 vpe_ctl;