diff options
| author |   Cédric Le Goater <clg@kaod.org> | 2019-09-10 10:18:49 +0200 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-09-14 00:58:47 +1000 |
| commit | 5896163f7f91c0560cc41908c808661eee4c4121 (patch) | |
| tree | 53346bcd1edf5a6ce86f32cce8fd1129818212ae /arch/powerpc/sysdev/xive/common.c | |
| parent | powerpc/mm/radix: remove useless kernel messages (diff) | |
| download | linux-dev-5896163f7f91c0560cc41908c808661eee4c4121.tar.xz linux-dev-5896163f7f91c0560cc41908c808661eee4c4121.zip | |
powerpc/xmon: Improve output of XIVE interrupts
When looping on the list of interrupts, add the current value of the
PQ bits with a load on the ESB page. This has the side effect of
faulting the ESB page of all interrupts.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190910081850.26038-2-clg@kaod.org
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index f75a660365e5..b10919f08250 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -258,10 +258,33 @@ notrace void xmon_xive_do_dump(int cpu) #endif } -int xmon_xive_get_irq_config(u32 irq, u32 *target, u8 *prio, - u32 *sw_irq) +int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d) { - return xive_ops->get_irq_config(irq, target, prio, sw_irq); + int rc; + u32 target; + u8 prio; + u32 lirq; + + rc = xive_ops->get_irq_config(hw_irq, &target, &prio, &lirq); + if (rc) { + xmon_printf("IRQ 0x%08x : no config rc=%d\n", hw_irq, rc); + return rc; + } + + xmon_printf("IRQ 0x%08x : target=0x%x prio=%02x lirq=0x%x ", + hw_irq, target, prio, lirq); + + if (d) { + struct xive_irq_data *xd = irq_data_get_irq_handler_data(d); + u64 val = xive_esb_read(xd, XIVE_ESB_GET); + + xmon_printf("PQ=%c%c", + val & XIVE_ESB_VAL_P ? 'P' : '-', + val & XIVE_ESB_VAL_Q ? 'Q' : '-'); + } + + xmon_printf("\n"); + return 0; } #endif /* CONFIG_XMON */ |