On 01/17/2017 04:20 AM, Marc Zyngier wrote:
Add helper functions that probe for VLPI and DirectLPI properties.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
drivers/irqchip/irq-gic-v3.c | 22 ++++++++++++++++++++++
include/linux/irqchip/arm-gic-v3.h | 3 +++
2 files changed, 25 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 5cadec0..8a6de91 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -514,6 +514,24 @@ static int gic_populate_rdist(void)
return -ENODEV;
}
+static int __gic_update_vlpi_properties(struct redist_region *region,
+ void __iomem *ptr)
+{
+ u64 typer = gic_read_typer(ptr + GICR_TYPER);
+ gic_data.rdists.has_vlpis &= !!(typer & GICR_TYPER_VLPIS);
+ gic_data.rdists.has_direct_lpi &= !!(typer &
GICR_TYPER_DirectLPIS);
+
+ return 1;
+}
+
+static void gic_update_vlpi_properties(void)
+{
+ gic_scan_rdist_properties(__gic_update_vlpi_properties);
+ pr_info("%sVLPI support, %sdirect LPI support\n",
Would be better if we keep one space after 'no'?
--
Shanker Donthineni
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
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