[Why]
To process SET_CONFIG transactions with DMUB using inbox1 and
outbox1 mail boxes.

[How]
1) Added inbox1 DPIA command subtype DMUB_CMD__DPIA_SET_CONFIG_ACCESS to
   issue SET_CONFIG command to DMUB in dc_process_dmub_set_config_async().
   DMUB processes the command with DPIA sends reply back immediately or
   in an outbox1 message triggering an outbox1 interrupt to driver.
2) DMUB posts SET_CONFIG reply as an Outbox1 message of type
   DMUB_OUT_CMD__SET_CONFIG_REPLY.
3) The dmub async to sync mechanism for AUX is modified to accommodate
   SET_CONFIG commands for both command issue and reply code paths.
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NWayne Lin <Wayne.Lin@amd.com>
Acked-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Signed-off-by: NMeenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Running into bugchecks during stress test where rptr is 0xFFFFFFFF.
Typically this is caused by a hard hang, and can come from HW outside
of DCN.

[How]
To prevent bugchecks when writing the DMUB rptr, fist check that the
rptr is valid.
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NSolomon Chiu <solomon.chiu@amd.com>
Signed-off-by: NWyatt Wood <wyatt.wood@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
When system is in Z10 HPD interrupts cannot fire, we may miss display
configuration changes.

[How]
When Zstate is enabled, if DMUB indicate DCN has lost power, do a
complete detection periodically.
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NMikita Lipski <mikita.lipski@amd.com>
Signed-off-by: NEric Yang <Eric.Yang2@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
dmub would notify x86 response time violation by GPINT_DATAOUT

[How]
1. Use GPINT_DATAOUT to trigger x86 interrupt
2. Register GPINT_DATAOUT interrupt handler.
3. Trigger ACR while GPINT_DATAOUT occurred.
Signed-off-by: NChun-Liang Chang <Chun-Liang.Chang@amd.com>
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

No need for a separate flag now that DCN3.1 is not in bring up.
Fold into DRM_AMD_DC_DCN like previous DCN IPs.
Reviewed-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[WHY]
Ability to triage DMCUB is improved with availability of certain
dmub registers not currently captured in crash dump diagnostic data.

[HOW]
Add dmub registers to diagnostic data collection.

Thanks Nicholas Kazlauskas for awesome input on this!
Signed-off-by: NAshley Thomas <Ashley.Thomas2@amd.com>
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NAnson Jacob <Anson.Jacob@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

DMCU-B (Display Micro-Controller Unit B) is a display microcontroller
used for shared display functionality with BIOS and for advanced
power saving display features.

Extends the command header to include new DCN3.1 functionality.

Adds new interfaces to DC dmub interface as well for z-state support.
Acked-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Start using INBOX0 for HW Lock command

[How]
- Implement initial interface for INBOX0 HW lock message
Signed-off-by: NAlvin Lee <Alvin.Lee2@amd.com>
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NQingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why&How]
Add Beige Goby (DCN303) resource, irq service, & dmub loader.

v2: fix nbio include (Alex)
Signed-off-by: NChris Park <Chris.Park@amd.com>
Signed-off-by: NAurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Need to get current DMUB time.

[How]
Add get_current_time interface to dmub_srv.

v2: drop whitespace changes (Alex)
Signed-off-by: NWyatt Wood <wyatt.wood@amd.com>
Reviewed-by: NAric Cyr <Aric.Cyr@amd.com>
Acked-by: NStylon Wang <stylon.wang@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why & How]
Add the field to HW params to allow DM dynamically pass down debug and
boot options as needed.
Signed-off-by: NEric Yang <Eric.Yang2@amd.com>
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NWayne Lin <Wayne.Lin@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Driver get wrap around dmub trace data due to read pointer being
increased incorrectly when there are multiple interrupt
queues with very short interval

[How]
Check read/write pointer before copying data from ring buffer
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NYongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NEryk Brol <eryk.brol@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why & How]
DMUB FW send trace event via outbox0 interrupt.  Driver will handle it.
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NYongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[WHY]
To process AUX transactions with DMUB using inbox1 and outbox1 mail boxes.

[HOW]
1) Added inbox1 command DMUB_CMD__DP_AUX_ACCESS to issue AUX commands
   to DMUB in dc_process_dmub_aux_transfer_async(). DMUB processes AUX cmd
   with DCN and sends reply back in an outbox1 message triggering an
   outbox1 interrupt to driver.
2) In existing driver implementation, AUX commands are processed
   synchronously by configuring DCN reg. But in DMUB AUX, driver sends an
   inbox1 message and waits for a conditional variable (CV) which will be
   signaled by outbox1 ISR.
3) As the driver holds dal and dc locks while waiting for CV, the outbox1
   ISR is registered with noMutexWait set to true, which allows ISR to run
   and signal CV. This sets a constraint on ISR to not modify variables
   such as dc, dmub, etc.
4) Created dmub_outbox.c with dmub_enable_outbox_notification() to enable
   outbox1 mailbox.
5) New mailbox address ranges allocated for outbox1 of size DMUB_RB_SIZE.
   Created dmub functions for Outbox1: dmub_dcn20_setup_out_mailbox(),
   dmub_dcn20_get_outbox1_wptr() and dmub_dcn20_set_outbox1_rptr().
6) Added functions dc_stat_get_dmub_notification() and
   dmub_srv_stat_get_notification() to retrieve Outbox1 message.
7) Currently, DMUB doesn't opens DDC in AUX mode before issuing AUX
   transaction. A workaround is added in dce_aux_transfer_dmub_raw() to
   open in DDC in AUX mode for every AUX transaction.
8) Added dc debug option enable_dmub_aux_for_legacy_ddc enable/disable
   DMUB AUX. This debug option is checked dce_aux_transfer_with_retries()
   to select the method to process AUX transactions.
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NMeenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Add support for new fw command for runtime feature detection.

[How]
Driver sends command through ring buffer, and fw returns data back
through this command.
Signed-off-by: NWyatt Wood <wyatt.wood@amd.com>
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NEryk Brol <eryk.brol@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

There is a delta in the dmub code
- add boot options
- add boot status
- remove unused auto_load_is_done func pointer
Signed-off-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Avoids confusion in configurations.

v2: fix build when CONFIG_DRM_AMD_DC_DCN is disabled
v3: rebase on latest code

Reviewed-by: Luben Tuikov <luben.tuikov@amd.com> (v1)
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

 - add DCN302 resource, irq service, dmub loader,
 - handle  DC_VERSION_DCN_3_02
 - define DCN302 power gating functions
 - handle DCN302 in GPIO files
 - define I2C regs
 - add CONFIG_DRM_AMD_DC_DCN3_02 guard

v2: rebase fixes (Alex)
Signed-off-by: NJoshua Aberback <joshua.aberback@amd.com>
Signed-off-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Update dc for vangogh support.

v2: fix compilation without DCN 301 set.
Signed-off-by: NRoman Li <Roman.Li@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

To avoid s3 faild at the first cycle on renoir platform, it needs to
revert this patch:
drm/amd/display: add mechanism to skip DCN init
Signed-off-by: Nchangfeng <Changfeng.Zhu@amd.com>
Ackedy-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
If optimized init is done in FW. DCN init be skipped in driver. This
need to be communicated between driver and fw and maintain backwards
compatibility.

[How]
Use DMUB scratch 0 bit 2 to indicate optimized init done in fw and
use DMUB scatch 4 bit 0 to indicate drive supports the optimized flow
so FW will perform it.
Signed-off-by: NEric Yang <Eric.Yang2@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why & How]
Add emul specific hw function to dmub, in case of
emulator is created, we can runtime switch between
dmub emulator or dmub uC via is_virtual flag in dmub.
Signed-off-by: NYongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

DMUB (Display Micro-Controller Unit)

Used to read/write regs
Signed-off-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
We want to better encapsulate all driver-fw dependencies into a single
file.

[How]
Combine all the headers under inc folder into a single header
Signed-off-by: NAnthony Koo <Anthony.Koo@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
In order to switch over the inbox from region4 to cw4 we need to know if
the firmware is capable of properly invalidating the cache before
reading the commands.

Easiest way is to just check the firmware version, but we don't have the
helper macros or a way for the dmub_srv to know what version it is.

[How]
Add a new fw_version field to the creation parameters that driver can
optional pass in. Assumes a version of 0x00000000 is invalid.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Make a separation of what belongs in the differen dmub
headers

dmub_srv.h is for exposing dmub srv interface to rest of
driver.

other headers inside dmub/inc exposes cmds and definitions
that are owned by the firmware

[How]
keep firmware owned definitions in dmub/inc

move stuff that is purely driver interface headers to dmub/
since those are interface calls that are defined for rest of
driver to use
Signed-off-by: NAnthony Koo <Anthony.Koo@amd.com>
Reviewed-by: NAric Cyr <Aric.Cyr@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Acked-by: NAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
We read memory that we shouldn't be touching if the struct isn't
a full union dmub_rb_cmd.

[How]
Fix up all the callers and functions that take in the dmub_cmd_header
to use the dmub_rb_cmd instead.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
By moving everything out of .data into the other regions we can drop
the requirement for the second blob and unify it all into the inst/const
blob.

[How]
We need to still support the blob being there and not being there for
backwards compatibility.

Look for the DMCUB metadata section in the end of the inst/const blob
instead of bss/data is missing.

Clear CW2 if we don't have the data blob so we don't hang when
transitioning between data blob/blobless firmwares.

Don't memcpy the blob into CW2 region if it doesn't exist.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Driver must pass abm config table to dmub fw. This provides various
parameters for abm functionality.

[How]
There is too much data to be passed in an inbox message, so we must pass
this data using an indirect buffer.  Copy the table to cw7 via x86,
driver copies to fw_state structure.
Signed-off-by: NWyatt Wood <wyatt.wood@amd.com>
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: NTony Cheng <Tony.Cheng@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
The scratch space can be used to pass data between x86 and DMCUB.  DMCUB
will manage the actually mapping of CW7 internally, driver does not
program the window.

[How]
Allocate extra space within the DMUB service's framebuffer for this
scratch space and expose them from the service for use in DC.
Signed-off-by: NWyatt Wood <wyatt.wood@amd.com>
Reviewed-by: NNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
The General Purpose Interrupt is used on the DMCUB to pass lightweight
commands via a register to the DMCUB.

This is limited to 32-bit command and 32-bit response.

This will be used for shutting down the firmware in a clean manner.

[How]
Add the command IDs and the data register to correctly format
the commands.

Add the interface functions to dmub_srv for sending and receiving the
commands.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
We'll need this to perform a clean shutdown before unloading the driver.

[How]
It will call reset internally and set hw_init to false. It won't do
anything if the hardware isn't initialized.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Under some hardware initialization sequences the fb base/fb offset
provided can be zero or hardwareinit can happen too late.

We want to ensure that we always have the correct fb_base/fb_offset
when performing DMCUB hardware initialization so we can do DMCUB
command table offloading during first dc hardware init.

[How]
Read from the DCN registers. VBIOS already filled these in for us.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NWesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
There's a data race that can occur between when we update the
inbox write pointer vs when the memory for the command actually gets
flushed from the map to the framebuffer.

DMCUB can read stale or partially invalid data when this race occurs.

[How]
Before updating the write pointer we can read back all pending commands
to ensure that we stall for the writes to be flushed to framebuffer.

We don't need to worry about choosing HDP vs VM flush with this
mechanism.

Drop the dmub_srv_cmd_submit() while we're updating this to work
correctly since nothing was actually using this API and the caller
should be explicit about the API flow here - by doing this on execute
we can give some extra time for the flush to finish while
preparing other commands.

We should try to avoid writing single commands
because of this overhead.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Firmware state and tracebuffer shouldn't be considered stable API
between firmware versions.

Driver shouldn't be querying anything from firmware state or tracebuffer
outside of debugging.

Commands are the stable API for this once we have the outbox.

[How]
Add metadata struct to the end of the data firmware that describes
fw_state_size and some reserved area for future use.

Drop the tracebuffer and firmware state headers since they can differ
per version.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
These values can differ per ASIC and should follow the full DC style
register programming model.

[How]
Define a common list and fill in the common list separately for
dcn20 and dcn21.

Unlike DC we're not using designated initializers for better compiler
compatibility since this resides in the DMUB service.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
Scratch registers are limited on the DMCUB and we have an expanding
list of state to track between driver and DMCUB.

[How]
Place shared state in cache window 6. The cache window size is aligned
to the size of the cache line on the DMCUB to make it easy to
invalidate.

The shared state is intended to be read only from driver side so
it's been marked as const.

The use of volatile is intentional. The memory for the shared firmware
state is memory mapped from the framebuffer memory. The DMCUB will
flush its cache after modifying the region. There's no way for x86
to known whether this data is stale or not so we want to intentionally
disable optimization to force the read at every access.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NLeo Li <sunpeng.li@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
By default we shouldn't be trying to write secure registers during
DMUB hardware init.

[How]
Add a parameter to control whether we put the DMCUB into secure reset
and attempt to load CW0/CW1.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

[Why]
We want to avoid reprogramming the cache window when possible.

We don't need to worry about it for S3 but we *do* need to worry about
it for S4 resume.

DM can check whether hardware should be reinitialized or store software
state when going to S4 to know whether we need to reprogram hardware.

[How]
Add helpers to the DMUB service to check hardware initialization state.

DM will hook it up later.
Signed-off-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

There are spelling mistakes in a DC_ERROR message and a comment.
Fix these.
Reviewed-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>