diff options
| author | Qais Yousef <qais.yousef@imgtec.com> | 2015-12-08 16:20:30 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-02-25 12:56:58 +0300 |
| commit | 16a8083cedbe628228dbb08fc1469c70e6208619 (patch) | |
| tree | d7d67a7c34c3fa1885ef38fe692c4f75a0a793fa /drivers | |
| parent | 7eb8c99db26cc6499bfb1eba72dffc4730570752 (diff) | |
| download | linux-16a8083cedbe628228dbb08fc1469c70e6208619.tar.xz | |
irqchip/mips-gic: Add new DT property to reserve IPIs
The new property will allow to specify the range of GIC hwirqs to use for IPIs.
This is an optinal property. We preserve the previous behaviour of allocating
the last 2 * gic_vpes if it's not specified or DT is not supported.
Signed-off-by: Qais Yousef <qais.yousef@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: <jason@lakedaemon.net>
Cc: <marc.zyngier@arm.com>
Cc: <jiang.liu@linux.intel.com>
Cc: <linux-mips@linux-mips.org>
Cc: <lisa.parratt@imgtec.com>
Cc: Qais Yousef <qsyousef@gmail.com>
Link: http://lkml.kernel.org/r/1449580830-23652-20-git-send-email-qais.yousef@imgtec.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 37831a557bcb..94a30da0cfac 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -957,6 +957,7 @@ static void __init __gic_init(unsigned long gic_base_addr, struct device_node *node) { unsigned int gicconfig; + unsigned int v[2]; __gic_base_addr = gic_base_addr; @@ -1027,8 +1028,15 @@ static void __init __gic_init(unsigned long gic_base_addr, gic_ipi_domain->bus_token = DOMAIN_BUS_IPI; - /* Make the last 2 * gic_vpes available for IPIs */ - bitmap_set(ipi_resrv, gic_shared_intrs - 2 * gic_vpes, 2 * gic_vpes); + if (node && + !of_property_read_u32_array(node, "mti,reserved-ipi-vectors", v, 2)) { + bitmap_set(ipi_resrv, v[0], v[1]); + } else { + /* Make the last 2 * gic_vpes available for IPIs */ + bitmap_set(ipi_resrv, + gic_shared_intrs - 2 * gic_vpes, + 2 * gic_vpes); + } gic_basic_init(); } |