The XGMI reset-on-init path can run while the device is still at the
minimal init level, such as during an NPS memory partition switch. In
that flow the normal RAS IP block hw_init is skipped, so unified RAS
is not enabled when the early CPER initialization is attempted, leaving
CPER disabled for the rest of the device's lifetime.

Resume RAS after the XGMI reset-on-init completes. Once the RAS manager
resume succeeds, the RAS resume wrapper performs deferred CPER
initialization, keeping the path a no-op for devices where CPER was
already initialized.

Keep the deferred CPER retry and its debugfs registration together in
the CPER helper. The normal debugfs ring walk skips the CPER ring until
CPER is enabled, so the ring debugfs entry is created either by the
deferred helper when debugfs is already available or by the normal
debugfs walk.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

retire funcs for generating legacy cper record

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Ce Sun <cesun102@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

These should be MIT.  The driver in general is MIT and
the license text at the top of the files is MIT so fix
it.

Fixes: 92d5d2a09de1 ("drm/amdgpu: Introduce funcs for populating CPER")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4654
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit abd3f876404cafb107cb34bacb74706bfee11cbe)

Generate CPER record when bad page threshold exceed and
commit to CPER ring.

v2: return -ENOMEM instead of false
v2: check return value of fill section function

Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Avoid the confliction between read and write of ring buffer.

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Old CPER data will be overwritten if ring buffer is full, and read
pointer always points to CPER header.

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

And initialize it, this is a pure software ring to store RAS CPER data.

v2: change ring size to 0x100000
v2: update the initialization of count_dw of cper ring, it's dword
variable
v3: skip VM inv eng for cper
v3: init/fini when aca enabled

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Introduce new functions that are used to generate
cper ue or ce records.

v2: return -ENOMEM instead of false
v2: check return value of fill section function

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Yang Wang <keivnyang.wang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Introduce utility functions designed to assist
in populating CPER records.

v2: call cper_init/fini in device_ip_init/fini.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>