Hi Eric,
On 2020-07-02 13:57, Auger Eric wrote:
Hi Jingyi,
On 7/2/20 5:01 AM, Jingyi Wang wrote:
If gicv4.1(sgi hardware injection) supported, we test ipi injection
via hw/sw way separately.
Signed-off-by: Jingyi Wang <wangjingyi11@xxxxxxxxxx>
---
arm/micro-bench.c | 45
+++++++++++++++++++++++++++++++++++++++-----
lib/arm/asm/gic-v3.h | 3 +++
lib/arm/asm/gic.h | 1 +
3 files changed, 44 insertions(+), 5 deletions(-)
diff --git a/arm/micro-bench.c b/arm/micro-bench.c
index fc4d356..80d8db3 100644
--- a/arm/micro-bench.c
+++ b/arm/micro-bench.c
@@ -91,9 +91,40 @@ static void gic_prep_common(void)
assert(irq_ready);
}
-static void ipi_prep(void)
+static bool ipi_prep(void)
Any reason why the bool returned value is preferred over the standard
int?
{
+ u32 val;
+
+ val = readl(vgic_dist_base + GICD_CTLR);
+ if (readl(vgic_dist_base + GICD_TYPER2) & GICD_TYPER2_nASSGIcap) {
+ val &= ~GICD_CTLR_ENABLE_G1A;
+ val &= ~GICD_CTLR_nASSGIreq;
+ writel(val, vgic_dist_base + GICD_CTLR);
+ val |= GICD_CTLR_ENABLE_G1A;
+ writel(val, vgic_dist_base + GICD_CTLR);
Why do we need this G1A dance?
Because it isn't legal to change the SGI behaviour when groups are
enabled.
Yes, it is described in this bit of documentation nobody has access to.
And this code needs to track RWP on disabling Group-1.
M.
--
Jazz is not dead. It just smells funny...
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