vgsp: mode 35 F3 - send the real client's KGR static ctx-buffer query set before the channel batch (capture #388-402; a2a/a32 may prepare the server per-context tables the 0x57 companion needs)

1 files changed, 58 insertions, 0 deletions

diff --git a/kernel/gsp_phys_booter.c b/kernel/gsp_phys_booter.c
index b94a877..b223cee 100644
--- a/kernel/gsp_phys_booter.c
+++ b/kernel/gsp_phys_booter.c
@@ -12661,6 +12661,55 @@ static int gsp_phys_rmcall_user_lane_userd(void __iomem *bar0)
 }
 
 /*
+ * Mode 35 / F3: the real client's KGR static ctx-buffer query set. The
+ * capture sends these getters on the subdevice (#388-#402) BEFORE the TSG,
+ * the share and any channel, and the server's per-context ctx-buffer tables
+ * (CONTEXT_BUFFERS_INFO in particular) may be prepared by the query. All are
+ * zero-in best-effort getters at the capture's payload sizes; a failure
+ * warns and the lane continues.
+ */
+static void gsp_phys_rmcall_user_lane_kgr_queries(void __iomem *bar0)
+{
+	static const struct {
+		u32 cmd;
+		u32 size;
+		const char *name;
+	} q[] = {
+		{ 0x20800a1fu, 184u,  "KGR_GET_CAPS" },
+		{ 0x20800a2au, 3712u, "KGR_GET_INFO" },
+		{ 0x20800a2cu, 320u,  "KGR_ZCULL_INFO" },
+		{ 0x20800a2eu, 96u,   "KGR_ROP_INFO" },
+		{ 0x20800a30u, 384u,  "KGR_PPC_MASKS" },
+		{ 0x20800a32u, 1664u, "KGR_CONTEXT_BUFFERS_INFO" },
+		{ 0x20800a34u, 72u,   "KGR_SM_ISSUE_RATE" },
+		{ 0x20800a3du, 32u,   "KGR_FECS_RECORD_SIZE" },
+		{ 0x20800a3fu, 256u,  "KGR_FECS_TRACE_DEFINES" },
+		{ 0x20800a48u, 8u,    "KGR_PDB_PROPERTIES" },
+	};
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(q); i++) {
+		void *buf = kvzalloc(q[i].size, GFP_KERNEL);
+		u32 rpc_result = 0, status = 0;
+		int ret;
+
+		if (!buf) {
+			pr_warn("vgsp-boot: rm-call: mode 35 KGR query %s skipped: no memory\n",
+				q[i].name);
+			continue;
+		}
+		ret = gsp_phys_rmcall_control(bar0,
+				boot_stage.rmcall_subdevice, q[i].cmd,
+				buf, q[i].size, 24u + q[i].size,
+				buf, q[i].size, &rpc_result, &status,
+				q[i].name);
+		pr_info("vgsp-boot: rm-call: mode 35 KGR query %s: size=%u status=0x%x rpc_result=0x%x ret=%d\n",
+			q[i].name, q[i].size, status, rpc_result, ret);
+		kvfree(buf);
+	}
+}
+
+/*
  * Mode 35 step 4b: the V7 real-client user-lane channel (0xcaf000a0). Every
  * captured #825 field is carried: class 0xc46f, hParent = ladder TSG,
  * hVASpace 0, hContextShare (the mode-34 share), flags 0x00201320,
@@ -13091,6 +13140,15 @@ static int gsp_phys_rmcall_stage3(void __iomem *bar0)
 	}
 
 	/*
+	 * Mode 35 / F3: the real client's KGR static ctx-buffer queries before
+	 * the channel batch (best-effort getters; capture #388-#402).
+	 */
+	if (gsp_phys_rmcall_engine_is_gr() &&
+	    boot_stage.rmcall_gr_promote ==
+			GSP_PHYS_RMCALL_GR_PROMOTE_GOLDEN_USER_LANE)
+		gsp_phys_rmcall_user_lane_kgr_queries(bar0);
+
+	/*
 	 * Golden-image replay (gsp_phys_rmcall_golden=1 + gsp_phys_gpu=1):
 	 * replay the stock client's post-load golden channel allocations after
 	 * the ladder's VAS/TSG exist and before the ladder's own channel/GR