Re: [PATCH] ppc/pnv: Set P10 core xscom region size to match hardware

[Daniel Henrique Barboza <danielhb413@gmail.com>]

This patch breaks make check-qtest:


$ make -j -C build && make -C build check-qtest
(...)
16/44 qemu:qtest+qtest-ppc64 / qtest-ppc64/pnv-xscom-test                 ERROR           0.89s   killed by signal 6 SIGABRT
>>> G_TEST_DBUS_DAEMON=/home/danielhb/powerpc/qemu/tests/dbus-vmstate-daemon.sh QTEST_QEMU_IMG=./qemu-img QTEST_QEMU_BINARY=./qemu-system-ppc64 QTEST_QEMU_STORAGE_DAEMON_BINARY=./storage-daemon/qemu-storage-daemon MALLOC_PERTURB_=231 /home/danielhb/powerpc/qemu/build/tests/qtest/pnv-xscom-test --tap -k
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stderr:
**
ERROR:../tests/qtest/pnv-xscom-test.c:115:test_xscom_core: assertion failed (dts0 == 0x26f024f023f0000ull): (0x00000000 == 0x26f024f023f0000)

(test program exited with status code -6)
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I believe you'll need to take a look at tests/qtest/pnv-xscom-test.c as well.


Thanks,

Daniel


On 7/4/23 22:27, Nicholas Piggin wrote:
> The P10 core xscom memory regions overlap because the size is wrong.
> The P10 core+L2 xscom region size is allocated as 0x1000 (with some
> unused ranges). "EC" is used as a closer match, as "EX" includes L3
> which has a disjoint xscom range that would require a different
> region if it were implemented.
> 
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
>   hw/ppc/pnv_core.c          | 3 +--
>   include/hw/ppc/pnv_xscom.h | 2 +-
>   2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
> index b7223bb445..ffbc29cbf4 100644
> --- a/hw/ppc/pnv_core.c
> +++ b/hw/ppc/pnv_core.c
> @@ -299,9 +299,8 @@ static void pnv_core_realize(DeviceState *dev, Error **errp)
>       }
>   
>       snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
> -    /* TODO: check PNV_XSCOM_EX_SIZE for p10 */
>       pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
> -                          pc, name, PNV_XSCOM_EX_SIZE);
> +                          pc, name, PNV10_XSCOM_EC_SIZE);
>   
>       qemu_register_reset(pnv_core_reset, pc);
>       return;
> diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h
> index f7da9a1dc6..a4c9d95dc5 100644
> --- a/include/hw/ppc/pnv_xscom.h
> +++ b/include/hw/ppc/pnv_xscom.h
> @@ -133,7 +133,7 @@ struct PnvXScomInterfaceClass {
>   
>   #define PNV10_XSCOM_EC_BASE(core) \
>       ((uint64_t) PNV10_XSCOM_EQ_BASE(core) | PNV10_XSCOM_EC(core & 0x3))
> -#define PNV10_XSCOM_EC_SIZE        0x100000
> +#define PNV10_XSCOM_EC_SIZE        0x1000
>   
>   #define PNV10_XSCOM_PSIHB_BASE     0x3011D00
>   #define PNV10_XSCOM_PSIHB_SIZE     0x100