Commit Graph

36 Commits

Author SHA1 Message Date
Julia Filipchuk
636cdf6fbd drm/xe/guc: Enable w/a 14022293748 and 22019794406
Enable workarounds for HW bug where render engine reset fails. Given
that we're bumping the minimum required GuC version to 70.29, we're
guaranteed to always have support for this KLV in the GuC.

v2: Enable KLV correctly for either workaround (Lucas)
v4: Add check for minimum supported GuC firmware version. Enable w/a for
hw version 20.01 too. (Daniele)
v5 (Daniele): remove now unneeded fw type and version checks (JohnH)

Signed-off-by: Julia Filipchuk <julia.filipchuk@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240805205435.921921-1-daniele.ceraolospurio@intel.com
2024-08-08 13:47:27 -07:00
Michal Wajdeczko
26a22952c8 drm/xe: Don't rely on indirect includes from xe_mmio.h
These compilation units use udelay() or some GT oriented printk
functions without explicitly including proper header files, and
relying on #includes from the xe_mmio.h instead. Fix that.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Francois Dugast <francois.dugast@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240520181814.2392-3-michal.wajdeczko@intel.com
2024-05-22 12:11:26 +02:00
Niranjana Vishwanathapura
d6219e1cd5 drm/xe: Add Indirect Ring State support
When Indirect Ring State is enabled, the Ring Buffer state and
Batch Buffer state are context save/restored to/from Indirect
Ring State instead of the LRC. The Indirect Ring State is a 4K
page mapped in global GTT at a 4K aligned address. This address
is programmed in the INDIRECT_RING_STATE register of the
corresponding context's LRC.

v2: Fix kernel-doc, add bspec reference
v3: Fix typo in commit text

Bspec: 67296, 67139
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240507224255.5059-3-niranjana.vishwanathapura@intel.com
2024-05-08 14:48:30 -07:00
Lucas De Marchi
ee72842306 drm/xe/ads: Use flexible-array
Zero-length arrays are deprecated and flexible arrays should be
used instead: https://www.kernel.org/doc/html/v6.9-rc7/process/deprecated.html#zero-length-and-one-element-arrays

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Closes: https://lore.kernel.org/r/202405051824.AmjAI5Pg-lkp@intel.com/
Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240506141917.205714-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-05-07 16:32:25 -07:00
Rodrigo Vivi
6b8ef44cc0
drm/xe: Introduce the wedged_mode debugfs
So, the wedged mode can be selected per device at runtime,
before the tests or before reproducing the issue.

v2: - s/busted/wedged
    - some locking consistency

v3: - remove mutex
    - toggle guc reset policy on any mode change

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423221817.1285081-4-rodrigo.vivi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2024-04-24 12:12:58 -04:00
Rodrigo Vivi
8ed9aaae39
drm/xe: Force wedged state and block GT reset upon any GPU hang
In many validation situations when debugging GPU Hangs,
it is useful to preserve the GT situation from the moment
that the timeout occurred.

This patch introduces a module parameter that could be used
on situations like this.

If xe.wedged module parameter is set to 2, Xe will be declared
wedged on every single execution timeout (a.k.a. GPU hang) right
after devcoredump snapshot capture and without attempting any
kind of GT reset and blocking entirely any kind of execution.

v2: Really block gt_reset from guc side. (Lucas)
    s/wedged/busted (Lucas)

v3: - s/busted/wedged
    - Really use global_flags (Dafna)
    - More robust timeout handling when wedging it.

v4: A really robust clean exit done by Matt Brost.
    No more kernel warns on unbind.

v5: Simplify error message (Lucas)

Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Dafna Hirschfeld <dhirschfeld@habana.ai>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Himanshu Somaiya <himanshu.somaiya@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423221817.1285081-3-rodrigo.vivi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2024-04-24 12:12:58 -04:00
Vinay Belgaumkar
2817a1f1bf drm/xe/lnl: Apply GuC Wa_13011645652
Enable WA for a bug that could cause the C6 state machine to hang
during RC6 exit.

v2: Add comment clarifying the WA (John H)
v3: Add more details to the comment (John H)

Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417054802.1766359-1-vinay.belgaumkar@intel.com
2024-04-17 15:21:12 -07:00
John Harrison
b7f888ee9c drm/xe/lnl: Enable more GuC based workarounds
There are a couple of new workarounds for LNL that are implemented in
the GuC firmware. The KMD needs to enable them explicitly.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240410002646.3002394-2-John.C.Harrison@Intel.com
2024-04-16 10:50:36 -07:00
Badal Nilawar
c151ff5c90 drm/xe/lnl: Enable GuC Wa_14019882105
Enable GuC Wa_14019882105 to block interrupts during C6 flow
when the memory path has been blocked

v2: Make helper function generic and name it as
    guc_waklv_enable_simple (John Harrison)
v3: Make warning descriptive (John Harrison)
v4: s/drm_WARN/xe_gt_WARN/ (Michal)

Cc: John Harrison <john.harrison@intel.com>
Signed-off-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240405084231.3620848-3-badal.nilawar@intel.com
2024-04-09 12:54:04 +02:00
Badal Nilawar
d6da81a478 drm/xe/guc: Add support for workaround KLVs
To prevent running out of bits, new workaround (w/a) enable flags are
being added via a KLV system instead of a 32 bit flags word.

v2: GuC version check > 70.10 is not needed as base line xe doesnot
    support anything below < 70.19
v3: Use 64 bit ggtt address for future
    compatibility (John Harrison/Daniele)
v4: %s/PAGE_SIZE/SZ_4K/ (Michal)

Cc: John Harrison <John.C.Harrison@intel.com>
Signed-off-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240405084231.3620848-2-badal.nilawar@intel.com
2024-04-09 12:54:02 +02:00
Lucas De Marchi
62742d1266 drm/xe: Normalize bo flags macros
The flags stored in the BO grew over time without following
much a naming pattern. First of all, get rid of the _BIT suffix that was
banned from everywhere else due to the guideline in
drivers/gpu/drm/i915/i915_reg.h that xe kind of follows:

	Define bits using ``REG_BIT(N)``. Do **not** add ``_BIT`` suffix to the name.

Here the flags aren't for a register, but it's good practice to keep it
consistent.

Second divergence on names is the use or not of "CREATE". This is
because most of the flags are passed to xe_bo_create*() family of
functions, changing its behavior. However, since the flags are also
stored in the bo itself and checked elsewhere in the code, it seems
better to just omit the CREATE part.

With those 2 guidelines, all the flags are given the form
XE_BO_FLAG_<FLAG_NAME> with the following commands:

	git grep -le "XE_BO_" -- drivers/gpu/drm/xe | xargs sed -i \
		-e "s/XE_BO_\([_A-Z0-9]*\)_BIT/XE_BO_\1/g" \
		-e 's/XE_BO_CREATE_/XE_BO_FLAG_/g'
	git grep -le "XE_BO_" -- drivers/gpu/drm/xe | xargs sed -i -r \
		-e 's/XE_BO_(DEFER_BACKING|SCANOUT|FIXED_PLACEMENT|PAGETABLE|NEEDS_CPU_ACCESS|NEEDS_UC|INTERNAL_TEST|INTERNAL_64K|GGTT_INVALIDATE)/XE_BO_FLAG_\1/g'

And then the defines in drivers/gpu/drm/xe/xe_bo.h are adjusted to
follow the coding style.

Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240322142702.186529-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-04-02 10:33:57 -07:00
Matthew Brost
231c411087 drm/xe: Add XE_BO_GGTT_INVALIDATE flag
Add XE_BO_GGTT_INVALIDATE flag which indicates the GGTT should be
invalidated when a BO is added / removed from the GGTT. This is
typically set when a BO is used by the GuC as the GuC has GGTT TLBs.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
[mlankhorst: Small fix to only inherit GGTT_INVALIDATE from src bo]
[mlankhorst: Remove _BIT from name]
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240306052002.311196-4-matthew.brost@intel.com
2024-03-20 10:49:14 +01:00
Michał Winiarski
a44bbace73 drm/xe/guc: Allocate GuC data structures in system memory for initial load
GuC load will need to happen at an earlier point in probe, where local
memory is not yet available. Use system memory for GuC data structures
used for initial "hwconfig" load, and realloc at a later,
"post-hwconfig" load if needed, when local memory is available.

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240219130530.1406044-1-michal.winiarski@intel.com
2024-02-20 14:13:42 -05:00
Lucas De Marchi
5a92da34dd drm/xe: Rename info.supports_* to info.has_*
Rename supports_mmio_ext and supports_usm to use a has_ prefix so the
flags are grouped together. This settles on just one variant for
positive info matching ("has_") and one for negative ("skip_").

Also make sure the has_* flags are grouped together in xe_pci.c.

Reviewed-by: Koby Elbaz <kelbaz@habana.ai>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20231205145235.2114761-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:45:27 -05:00
Niranjana Vishwanathapura
0d97ecce16 drm/xe: Enable Fixed CCS mode setting
Disable dynamic HW load balancing of compute resource assignment
to engines and instead enabled fixed mode of mapping compute
resources to engines on all platforms with more than one compute
engine.

By default enable only one CCS engine with all compute slices
assigned to it. This is the desired configuration for common
workloads.

PVC platform supports only the fixed CCS mode (workaround 16016805146).

v2: Rebase, make it platform agnostic
v3: Minor code refactoring

Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:45:26 -05:00
Michał Winiarski
0e1a47fcab drm/xe: Add a helper for DRM device-lifetime BO create
A helper for managed BO allocations makes it possible to remove specific
"fini" actions and will simplify the following patches adding ability to
execute a release action for specific BO directly.

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:45:11 -05:00
Matt Roper
83af834e71 drm/xe/mocs: MOCS registers are multicast on Xe_HP and beyond
The MOCS registers should be written in an MCR-specific manner on Xe_HP
and beyond to prevent any other driver threads or external firmware from
putting the hardware into unicast mode while we initialize the MOCS
table.

Bspec: 66534, 67609, 71185
Cc: Ruthuvikas Ravikumar <ruthuvikas.ravikumar@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20231023204112.2856331-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:43:22 -05:00
Francois Dugast
c73acc1eeb drm/xe: Use Xe assert macros instead of XE_WARN_ON macro
The XE_WARN_ON macro maps to WARN_ON which is not justified
in many cases where only a simple debug check is needed.
Replace the use of the XE_WARN_ON macro with the new xe_assert
macros which relies on drm_*. This takes a struct drm_device
argument, which is one of the main changes in this commit. The
other main change is that the condition is reversed, as with
XE_WARN_ON a message is displayed if the condition is true,
whereas with xe_assert it is if the condition is false.

v2:
- Rebase
- Keep WARN splats in xe_wopcm.c (Matt Roper)

v3:
- Rebase

Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:41:08 -05:00
Daniele Ceraolo Spurio
296549107e drm/xe: base definitions for the GSCCS
The first step in introducing the GSCCS is to add all the basic defs for
it (name, mmio base, class/instance, lrc size etc).

Bspec: 60149, 60421, 63752
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230817201831.1583172-3-daniele.ceraolospurio@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:40:20 -05:00
Francois Dugast
9b9529ce37 drm/xe: Rename engine to exec_queue
Engine was inappropriately used to refer to execution queues and it
also created some confusion with hardware engines. Where it applies
the exec_queue variable name is changed to q and comments are also
updated.

Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/162
Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:39:20 -05:00
Francois Dugast
99fea68288 drm/xe: Prefer WARN() over BUG() to avoid crashing the kernel
Replace calls to XE_BUG_ON() with calls XE_WARN_ON() which in turn calls
WARN() instead of BUG(). BUG() crashes the kernel and should only be
used when it is absolutely unavoidable in case of catastrophic and
unrecoverable failures, which is not the case here.

Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:39:17 -05:00
Francois Dugast
3e8e7ee6a3 drm/xe: Cleanup style warnings
Reduce the number of warnings reported by checkpatch.pl from 118 to 48 by
addressing those warnings types:

  LEADING_SPACE
  LINE_SPACING
  BRACES
  TRAILING_SEMICOLON
  CONSTANT_COMPARISON
  BLOCK_COMMENT_STYLE
  RETURN_VOID
  ONE_SEMICOLON
  SUSPECT_CODE_INDENT
  LINE_CONTINUATIONS
  UNNECESSARY_ELSE
  UNSPECIFIED_INT
  UNNECESSARY_INT
  MISORDERED_TYPE

Signed-off-by: Francois Dugast <francois.dugast@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-21 11:37:31 -05:00
Matt Roper
876611c2b7 drm/xe: Memory allocations are tile-based, not GT-based
Since memory and address spaces are a tile concept rather than a GT
concept, we need to plumb tile-based handling through lots of
memory-related code.

Note that one remaining shortcoming here that will need to be addressed
before media GT support can be re-enabled is that although the address
space is shared between a tile's GTs, each GT caches the PTEs
independently in their own TLB and thus TLB invalidation should be
handled at the GT level.

v2:
 - Fix kunit test build.

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230601215244.678611-13-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:34:14 -05:00
Lucas De Marchi
ee21379acc drm/xe: Rename reg field to addr
Rename the address field to "addr" rather than "reg" so it's easier to
understand what it is.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20230508225322.2692066-4-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:33:50 -05:00
Lucas De Marchi
ce8bf5bd05 drm/xe/mmio: Use struct xe_reg
Convert all the callers to deal with xe_mmio_*() using struct xe_reg
instead of plain u32. In a few places there was also a rename
s/reg/reg_val/ when dealing with the value returned so it doesn't get
mixed up with the register address.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20230508225322.2692066-2-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:33:49 -05:00
Lucas De Marchi
98ce59e9ba drm/xe/guc: Handle RCU_MODE as masked from definition
guc_mmio_regset_write() had a flags for the registers to be added to the
GuC's regset list. The only register actually using that was RCU_MODE,
but it was setting the flags to a bogus value. From
struct xe_guc_fwif.h,

	#define GUC_REGSET_MASKED               BIT(0)
	#define GUC_REGSET_MASKED_WITH_VALUE    BIT(2)
	#define GUC_REGSET_RESTORE_ONLY         BIT(3)

Cross checking with i915, the only flag to set in RCU_MODE is
GUC_REGSET_MASKED. That can be done automatically from the register, as
long as the definition is correct.

Add the XE_REG_OPTION_MASKED annotation to RCU_MODE and kill the "flags"
field in guc_mmio_regset_write(): guc_mmio_regset_write_one() can decide
that based on the register being passed.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20230429062332.354139-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:33:14 -05:00
Lucas De Marchi
07fbd1f85d drm/xe: Plumb xe_reg into WAs, rtp, etc
Now that struct xe_reg and struct xe_reg_mcr are types that can be used
by xe, convert more of the driver to use them. Some notes about the
conversions:

	- The RTP tables don't need the MASKED flags anymore in the
	  actions as that information now comes from the register
	  definition

	- There is no need for the _XE_RTP_REG/_XE_RTP_REG_MCR macros
	  and the register types on RTP infra: that comes from the
	  register definitions.

	- When declaring the RTP entries, there is no need anymore to
	  undef XE_REG and friends: the RTP macros deal with removing
	  the cast where needed due to not being able to use a compound
	  statement for initialization in the tables

	- The index in the reg-sr xarray is the register offset only.
	  Otherwise we wouldn't catch mistakes about adding both a
	  MCR-style and normal-style registers. For that, the register
	  is now also part of the entry, so the options can be compared
	  to check for compatible entries.

In order to be able to accomplish this, some improvements are needed on
the RTP macros. Change its implementation to concentrate on "pasting a prefix
to each argument" rather than the more general "call any macro for each
argument". Hopefully this will avoid trying to extend this infra and
making it more complex. With the use of tuples for building the
arguments, it's not possible to pass additional register fields and
using xe_reg in the RTP tables.

xe_mmio_* still need to be converted, from u32 to xe_reg, but that is
left for another change.

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230427223256.1432787-10-lucas.demarchi@intel.com
Link: https://lore.kernel.org/r/20230427223256.1432787-6-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:32:21 -05:00
Lucas De Marchi
d9b79ad275 drm/xe: Drop gen afixes from registers
The defines for the registers were brought over from i915 while
bootstrapping the driver. As xe supports TGL and later only, it doesn't
make sense to keep the GEN* prefixes and suffixes in the registers: TGL
is graphics version 12, previously called "GEN12". So drop the prefix
everywhere.

v2:
  - Also drop _TGL suffix and reword commit message as suggested
    by Matt Roper. While at it, rename VSUNIT_CLKGATE_DIS_TGL to
    VSUNIT_CLKGATE2_DIS with the additional "2", so it doesn't clash
    with the define for the other register

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230427223256.1432787-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:32:15 -05:00
Lucas De Marchi
7b829f6dd6 drm/xe/guc: Convert GuC registers to REG_FIELD/REG_BIT
Cleanup GuC register declarations by converting them to use REG_FIELD,
REG_BIT and REG_GENMASK. While converting, also reorder the bitfields
so they follow the convention of declaring the higher bits first.

v2:
  - Drop unused HUC_LOADING_AGENT_VCR and DMA_ADDRESS_SPACE_GTT (Matt Roper)
  - Simplify HUC_LOADING_AGENT_GUC define (Matt Roper)

Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://lore.kernel.org/r/20230427223256.1432787-2-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:32:15 -05:00
Lucas De Marchi
a9b1a13614 drm/xe/guc: Move GuC registers to regs/
There's no good reason to keep the GuC registers outside the regs/
directory: move the header with GuC registers under that.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:31:47 -05:00
Matt Roper
39fd0b4507 drm/xe/guc: Handle regset overflow check for entire GT
Checking whether a single engine's register save/restore entries
overflow the expected/pre-allocated GuC ADS regset area isn't terribly
useful; we actually want to check whether the combined entries from all
engines on the GT overflow the regset space.

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20230308005509.2975663-1-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:29:44 -05:00
Matt Roper
f659ac1564 drm/xe/mocs: LNCF MOCS settings only need to be restored on pre-Xe_HP
Reprogramming the LNCF MOCS registers on render domain reset is not
intended to be regular driver programming, but rather the implementation
of a specific workaround (Wa_1607983814).  This workaround no longer
applies on Xe_HP any beyond, so we can expect that these registers, like
the rest of the LNCF/LBCF registers, will maintain their values through
all engine resets.  We should only add these registers to the GuC's
save/restore list on platforms that need the workaround.

Furthermore, xe_mocs_init_engine() appears to be another attempt to
satisfy this same workaround.  This is unnecessary on the Xe driver
since even on platforms where the workaround is necessary, all
single-engine resets are initiated by the GuC and thus the GuC will take
care of saving/restoring these registers.  The only host-initiated
resets we have in Xe are full GT resets which will already
(re)initialize these registers as part of the regular xe_mocs_init()
flow.

v2:
 - Add needs_wa_1607983814() so that calculate_regset_size() doesn't
   overallocate regset space when the workaround isn't needed.  (Lucas)
 - On platforms affected by Wa_1607983814, only add the LNCF MOCS
   registers to the render engine's GuC save/restore list; resets of
   other engines don't need to save/restore these.

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:29:43 -05:00
Lucas De Marchi
226bfec858 drm/xe: Remove dependency on intel_gt_regs.h
Create regs/xe_gt_regs.h file with all the registers and bit
definitions used by the xe driver. Eventually the registers may be
defined in a different way and since xe doesn't supported below gen12,
the number of registers touched is much smaller, so create a new header.

The definitions themselves are direct copy from the
gt/intel_gt_regs.h file, just sorting the registers by address.
Cleaning those up and adhering to a common coding style is left for
later.

v2: Make the change to MCR_REG location in a separate patch to go
    through the i915 branch  (Matt Roper / Rodrigo)

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:29:21 -05:00
Lucas De Marchi
b79e8fd954 drm/xe: Remove dependency on intel_engine_regs.h
Create regs/xe_engine_regs.h file with all the registers and bit
definitions used by the xe driver. Eventually the registers may be
defined in a different way and since xe doesn't supported below gen12,
the number of registers touched is much smaller, so create a new header.

The definitions themselves are direct copy from the
gt/intel_engine_regs.h file, just sorting the registers by address.
Cleaning those up and adhering to a common coding style is left for
later.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:29:20 -05:00
Lucas De Marchi
ea9f879d03 drm/xe: Sort includes
Sort includes and split them in blocks:

1) .h corresponding to the .c. Example: xe_bb.c should have a "#include
   "xe_bb.h" first.
2) #include <linux/...>
3) #include <drm/...>
4) local includes
5) i915 includes

This is accomplished by running
`clang-format --style=file -i --sort-includes drivers/gpu/drm/xe/*.[ch]`
and ignoring all the changes after the includes. There are also some
manual tweaks to split the blocks.

v2: Also sort includes in headers

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2023-12-19 18:29:20 -05:00
Matthew Brost
dd08ebf6c3 drm/xe: Introduce a new DRM driver for Intel GPUs
Xe, is a new driver for Intel GPUs that supports both integrated and
discrete platforms starting with Tiger Lake (first Intel Xe Architecture).

The code is at a stage where it is already functional and has experimental
support for multiple platforms starting from Tiger Lake, with initial
support implemented in Mesa (for Iris and Anv, our OpenGL and Vulkan
drivers), as well as in NEO (for OpenCL and Level0).

The new Xe driver leverages a lot from i915.

As for display, the intent is to share the display code with the i915
driver so that there is maximum reuse there. But it is not added
in this patch.

This initial work is a collaboration of many people and unfortunately
the big squashed patch won't fully honor the proper credits. But let's
get some git quick stats so we can at least try to preserve some of the
credits:

Co-developed-by: Matthew Brost <matthew.brost@intel.com>
Co-developed-by: Matthew Auld <matthew.auld@intel.com>
Co-developed-by: Matt Roper <matthew.d.roper@intel.com>
Co-developed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Co-developed-by: Francois Dugast <francois.dugast@intel.com>
Co-developed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Co-developed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Co-developed-by: Philippe Lecluse <philippe.lecluse@intel.com>
Co-developed-by: Nirmoy Das <nirmoy.das@intel.com>
Co-developed-by: Jani Nikula <jani.nikula@intel.com>
Co-developed-by: José Roberto de Souza <jose.souza@intel.com>
Co-developed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Co-developed-by: Dave Airlie <airlied@redhat.com>
Co-developed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Co-developed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Co-developed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
2023-12-12 14:05:48 -05:00