[PATCH 6.18 345/396] drm/xe/rtp: Maintain OA whitelists separately

6.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ashutosh Dixit <[email protected]>

[ Upstream commit 31e2437561621b4867c08efc890bf629d017df03 ]

Contains minor modification of the above commit because of changed API.

OA registers are dynamically whitelisted (and again dewhitelisted) on OA
stream open/close. Maintaining OA whitelists separately from non-OA
register whitlists simplifies this management of OA register
whitelisting/dewhitelisting.

Fixes: 828a8eaf37c3 ("drm/xe/oa: Add MMIO trigger support")
Cc: [email protected] # v6.12+
Signed-off-by: Ashutosh Dixit <[email protected]>
Reviewed-by: Umesh Nerlige Ramappa <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Sasha Levin <[email protected]>
---
 drivers/gpu/drm/xe/xe_gt_debugfs.c      | 4 +++-
 drivers/gpu/drm/xe/xe_hw_engine.c       | 2 ++
 drivers/gpu/drm/xe/xe_hw_engine_types.h | 8 ++++++++
 drivers/gpu/drm/xe/xe_reg_whitelist.c   | 6 ++++++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_gt_debugfs.c b/drivers/gpu/drm/xe/xe_gt_debugfs.c
index f253e2df49077..1a4d8d4f44b4d 100644
--- a/drivers/gpu/drm/xe/xe_gt_debugfs.c
+++ b/drivers/gpu/drm/xe/xe_gt_debugfs.c
@@ -174,8 +174,10 @@ static int register_save_restore(struct xe_gt *gt, struct drm_printer *p)
 	drm_printf(p, "\n");
 
 	drm_printf(p, "Whitelist\n");
-	for_each_hw_engine(hwe, gt, id)
+	for_each_hw_engine(hwe, gt, id) {
 		xe_reg_whitelist_dump(&hwe->reg_whitelist, p);
+		xe_reg_whitelist_dump(&hwe->oa_whitelist, p);
+	}
 
 	xe_pm_runtime_put(gt_to_xe(gt));
 
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c
index d88770370eeb0..66a738f17a3ba 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine.c
+++ b/drivers/gpu/drm/xe/xe_hw_engine.c
@@ -565,6 +565,8 @@ static void hw_engine_init_early(struct xe_gt *gt, struct xe_hw_engine *hwe,
 	hw_engine_setup_default_state(hwe);
 
 	xe_reg_sr_init(&hwe->reg_whitelist, hwe->name, gt_to_xe(gt));
+	xe_reg_sr_init(&hwe->oa_whitelist, hwe->name, gt_to_xe(gt));
+	xe_reg_sr_init(&hwe->oa_sr, hwe->name, gt_to_xe(gt));
 	xe_reg_whitelist_process_engine(hwe);
 }
 
diff --git a/drivers/gpu/drm/xe/xe_hw_engine_types.h b/drivers/gpu/drm/xe/xe_hw_engine_types.h
index e4191a7a2c318..04ca7545d22c3 100644
--- a/drivers/gpu/drm/xe/xe_hw_engine_types.h
+++ b/drivers/gpu/drm/xe/xe_hw_engine_types.h
@@ -128,6 +128,14 @@ struct xe_hw_engine {
 	 * @reg_whitelist: table with registers to be whitelisted
 	 */
 	struct xe_reg_sr reg_whitelist;
+	/**
+	 * @oa_whitelist: oa registers to be whitelisted
+	 */
+	struct xe_reg_sr oa_whitelist;
+	/**
+	 * @oa_sr: oa nonpriv whitelist registers, changed on oa stream open/close
+	 */
+	struct xe_reg_sr oa_sr;
 	/**
 	 * @reg_lrc: LRC workaround registers
 	 */
diff --git a/drivers/gpu/drm/xe/xe_reg_whitelist.c b/drivers/gpu/drm/xe/xe_reg_whitelist.c
index 5cb7e0e3a66bd..6b7c90ba6d10c 100644
--- a/drivers/gpu/drm/xe/xe_reg_whitelist.c
+++ b/drivers/gpu/drm/xe/xe_reg_whitelist.c
@@ -66,6 +66,9 @@ static const struct xe_rtp_entry_sr register_whitelist[] = {
 		       ENGINE_CLASS(RENDER)),
 	  XE_RTP_ACTIONS(WHITELIST(CSBE_DEBUG_STATUS(RENDER_RING_BASE), 0))
 	},
+};
+
+static const struct xe_rtp_entry_sr oa_whitelist[] = {
 
 #define WHITELIST_DENY(r, f) WHITELIST(r, (f) | RING_FORCE_TO_NONPRIV_DENY)
 
@@ -138,6 +141,9 @@ void xe_reg_whitelist_process_engine(struct xe_hw_engine *hwe)
 	xe_rtp_process_to_sr(&ctx, register_whitelist, ARRAY_SIZE(register_whitelist),
 			     &hwe->reg_whitelist);
 	whitelist_apply_to_hwe(hwe);
+
+	xe_rtp_process_to_sr(&ctx, oa_whitelist, ARRAY_SIZE(oa_whitelist),
+			     &hwe->oa_whitelist);
 }
 
 /**
-- 
2.53.0