diff options
| author | Cédric Le Goater <clg@kaod.org> | 2019-08-14 17:47:53 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-19 13:20:24 +1000 |
| commit | b4868ff55d082bc66b0c287a41e4888f6d3e5f87 (patch) | |
| tree | 1433205cf4e23a07497bebeacac7ec7b599822ca /arch/powerpc/sysdev/xive/native.c | |
| parent | c3e0dbd7f780a58c4695f1cd8fc8afde80376737 (diff) | |
powerpc/xive: Fix dump of XIVE interrupt under pseries
The xmon 'dxi' command calls OPAL to query the XIVE configuration of a
interrupt. This can only be done on baremetal (PowerNV) and it will
crash a pseries machine.
Introduce a new XIVE get_irq_config() operation which implements a
different query depending on the platform, PowerNV or pseries, and
modify xmon to use a top level wrapper.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190814154754.23682-3-clg@kaod.org
Diffstat (limited to 'arch/powerpc/sysdev/xive/native.c')
| -rw-r--r-- | arch/powerpc/sysdev/xive/native.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index 2f26b74f6cfa..4b61e44f0171 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -111,6 +111,20 @@ int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq) } EXPORT_SYMBOL_GPL(xive_native_configure_irq); +static int xive_native_get_irq_config(u32 hw_irq, u32 *target, u8 *prio, + u32 *sw_irq) +{ + s64 rc; + __be64 vp; + __be32 lirq; + + rc = opal_xive_get_irq_config(hw_irq, &vp, prio, &lirq); + + *target = be64_to_cpu(vp); + *sw_irq = be32_to_cpu(lirq); + + return rc == 0 ? 0 : -ENXIO; +} /* This can be called multiple time to change a queue configuration */ int xive_native_configure_queue(u32 vp_id, struct xive_q *q, u8 prio, @@ -442,6 +456,7 @@ EXPORT_SYMBOL_GPL(xive_native_sync_queue); static const struct xive_ops xive_native_ops = { .populate_irq_data = xive_native_populate_irq_data, .configure_irq = xive_native_configure_irq, + .get_irq_config = xive_native_get_irq_config, .setup_queue = xive_native_setup_queue, .cleanup_queue = xive_native_cleanup_queue, .match = xive_native_match, |