diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2016-02-03 03:15:28 +0000 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2018-03-05 21:56:13 +0530 |
| commit | 51d89393b9d73045d16a37bbe24e95c38a1de58e (patch) | |
| tree | 13cb1cd627c43dc4e3143eb72b3da816e1475e9b /drivers/irqchip | |
| parent | 5f39ca1ade52d387ce38b15df28642b790d3ed10 (diff) | |
UPSTREAM: 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>
(cherry picked from commit 835d2b452969820fd67a755a2c01fb6e12822448)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 57c0e1a29715..3f79b3a203aa 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -230,6 +230,14 @@ 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; |