[PATCH 3/4] drm/xe/oa: Stop whitelisting OAM registers on non Xe2/Xe3

[Matt Roper <matthew.d.roper@intel.com>]

With the introduction of standalone media in Xe_LPM (version 13.00), the
OAM register space was part of the hardware's built-in register
whitelist, granting userspace read-only access automatically.  There is
no need to explicitly whitelist the registers on media version 13.00.

From Xe2_HPM (13.01) onward, userspace access to these registers was
deliberately removed by the hardware teams; by design, those registers
are not supposed to be needed by userspace for proper OA operation and
they're not supposed to be added to the software whitelist either.
Unfortunately they're already on the software table, so it's possible
that some of our KMD<->UMD OA interaction got misdesigned and trying to
remove them now might break userspace.  While we investigate further to
see whether or not it's possible to safely remove them, place an upper
bound on the whitelist entries to prevent this mistake from spreading
past Xe3 platforms.

Bspec: 45545, 60150
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
 drivers/gpu/drm/xe/xe_reg_whitelist.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 7491a8393b6f..99956c3574f9 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -121,12 +121,12 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
 				   RING_FORCE_TO_NONPRIV_RANGE_4))
 	},
 	{ XE_RTP_NAME("oam_mmio_trg_vcs"),
-	  XE_RTP_RULES(MEDIA_VERSION_RANGE(1300, XE_RTP_END_VERSION_UNDEFINED),
+	  XE_RTP_RULES(MEDIA_VERSION_RANGE(1301, 3099),
 		       ENGINE_CLASS(VIDEO_DECODE)),
 	  XE_RTP_ACTIONS(WHITELIST_OAM_MMIO_TRG)
 	},
 	{ XE_RTP_NAME("oam_mmio_trg_vecs"),
-	  XE_RTP_RULES(MEDIA_VERSION_RANGE(1300, XE_RTP_END_VERSION_UNDEFINED),
+	  XE_RTP_RULES(MEDIA_VERSION_RANGE(1301, 3099),
 		       ENGINE_CLASS(VIDEO_ENHANCE)),
 	  XE_RTP_ACTIONS(WHITELIST_OAM_MMIO_TRG)
 	},
-- 
2.52.0