Corey Hickey bceec87a73 platform/x86/amd/pmc: Detect when STB is not available ... Loading the amd_pmc module as: amd_pmc enable_stb=1 ...can result in the following messages in the kernel ring buffer: amd_pmc AMDI0009:00: SMU cmd failed. err: 0xff ioremap on RAM at 0x0000000000000000 - 0x0000000000ffffff WARNING: CPU: 10 PID: 2151 at arch/x86/mm/ioremap.c:217 __ioremap_caller+0x2cd/0x340 Further debugging reveals that this occurs when the requests for S2D_PHYS_ADDR_LOW and S2D_PHYS_ADDR_HIGH return a value of 0, indicating that the STB is inaccessible. To prevent the ioremap warning and provide clarity to the user, handle the invalid address and display an error message. Link: https://lore.kernel.org/platform-driver-x86/c588ff5d-3e04-4549-9a86-284b9b4419ba@amd.com Fixes: 3d7d407dfb ("platform/x86: amd-pmc: Add support for AMD Spill to DRAM STB feature") Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Signed-off-by: Corey Hickey <bugfood-c@fatooh.org> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20241028180241.1341624-1-bugfood-ml@fatooh.org Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>		2024-11-04 11:06:10 +01:00
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Kconfig	platform/x86/amd/pmc: Add AMD MP2 STB functionality	2024-04-15 15:40:53 +02:00
Makefile	platform/x86/amd/pmc: Add AMD MP2 STB functionality	2024-04-15 15:40:53 +02:00
mp2_stb.c	platform/x86/amd/pmc: Fix implicit declaration error on i386	2024-04-29 10:52:02 +02:00
pmc-quirks.c	platform/x86/amd/pmc: Extend Framework 13 quirk to more BIOSes	2024-04-17 17:05:30 +03:00
pmc.c	platform/x86/amd/pmc: Detect when STB is not available	2024-11-04 11:06:10 +01:00
pmc.h	platform/x86/amd/pmc: Send OS_HINT command for new AMD platform	2024-07-30 15:33:46 +03:00