drm/nouveau/flcn: move bind_context WAR out of common code

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/core/falcon.h

@@ -17,4 +17,6 @@ void nvkm_falcon_v1_set_start_addr(struct nvkm_falcon *, u32 start_addr);
 void nvkm_falcon_v1_start(struct nvkm_falcon *);
 int nvkm_falcon_v1_enable(struct nvkm_falcon *);
 void nvkm_falcon_v1_disable(struct nvkm_falcon *);
+
+void gp102_sec2_flcn_bind_context(struct nvkm_falcon *, struct nvkm_memory *);
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/sec2/gp102.c

@@ -21,6 +21,7 @@
  */
 #include "priv.h"
 #include <subdev/acr.h>
+#include <subdev/timer.h>
 
 static const struct nvkm_acr_lsf_func
 gp102_sec2_acr_0 = {
@@ -46,13 +47,52 @@ gp102_sec2_intr(struct nvkm_sec2 *sec2)
 	}
 }
 
+void
+gp102_sec2_flcn_bind_context(struct nvkm_falcon *falcon,
+			     struct nvkm_memory *ctx)
+{
+	struct nvkm_device *device = falcon->owner->device;
+
+	nvkm_falcon_v1_bind_context(falcon, ctx);
+	if (!ctx)
+		return;
+
+	/* Not sure if this is a WAR for a HW issue, or some additional
+	 * programming sequence that's needed to properly complete the
+	 * context switch we trigger above.
+	 *
+	 * Fixes unreliability of booting the SEC2 RTOS on Quadro P620,
+	 * particularly when resuming from suspend.
+	 *
+	 * Also removes the need for an odd workaround where we needed
+	 * to program SEC2's FALCON_CPUCTL_ALIAS_STARTCPU twice before
+	 * the SEC2 RTOS would begin executing.
+	 */
+	nvkm_msec(device, 10,
+		u32 irqstat = nvkm_falcon_rd32(falcon, 0x008);
+		u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
+		if ((irqstat & 0x00000008) &&
+		    (flcn0dc & 0x00007000) == 0x00005000)
+			break;
+	);
+
+	nvkm_falcon_mask(falcon, 0x004, 0x00000008, 0x00000008);
+	nvkm_falcon_mask(falcon, 0x058, 0x00000002, 0x00000002);
+
+	nvkm_msec(device, 10,
+		u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
+		if ((flcn0dc & 0x00007000) == 0x00000000)
+			break;
+	);
+}
+
 static const struct nvkm_falcon_func
 gp102_sec2_flcn = {
 	.fbif = 0x600,
 	.load_imem = nvkm_falcon_v1_load_imem,
 	.load_dmem = nvkm_falcon_v1_load_dmem,
 	.read_dmem = nvkm_falcon_v1_read_dmem,
-	.bind_context = nvkm_falcon_v1_bind_context,
+	.bind_context = gp102_sec2_flcn_bind_context,
 	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
 	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
 	.set_start_addr = nvkm_falcon_v1_set_start_addr,

drivers/gpu/drm/nouveau/nvkm/engine/sec2/tu102.c

@@ -27,7 +27,7 @@ tu102_sec2_flcn = {
 	.load_imem = nvkm_falcon_v1_load_imem,
 	.load_dmem = nvkm_falcon_v1_load_dmem,
 	.read_dmem = nvkm_falcon_v1_read_dmem,
-	.bind_context = nvkm_falcon_v1_bind_context,
+	.bind_context = gp102_sec2_flcn_bind_context,
 	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
 	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
 	.set_start_addr = nvkm_falcon_v1_set_start_addr,

drivers/gpu/drm/nouveau/nvkm/falcon/v1.c

@@ -182,7 +182,6 @@ nvkm_falcon_v1_read_dmem(struct nvkm_falcon *falcon, u32 start, u32 size,
 void
 nvkm_falcon_v1_bind_context(struct nvkm_falcon *falcon, struct nvkm_memory *ctx)
 {
-	struct nvkm_device *device = falcon->owner->device;
 	const u32 fbif = falcon->func->fbif;
 	u32 inst_loc;
 
@@ -220,41 +219,6 @@ nvkm_falcon_v1_bind_context(struct nvkm_falcon *falcon, struct nvkm_memory *ctx)
 
 	nvkm_falcon_mask(falcon, 0x090, 0x10000, 0x10000);
 	nvkm_falcon_mask(falcon, 0x0a4, 0x8, 0x8);
-
-	/* Not sure if this is a WAR for a HW issue, or some additional
-	 * programming sequence that's needed to properly complete the
-	 * context switch we trigger above.
-	 *
-	 * Fixes unreliability of booting the SEC2 RTOS on Quadro P620,
-	 * particularly when resuming from suspend.
-	 *
-	 * Also removes the need for an odd workaround where we needed
-	 * to program SEC2's FALCON_CPUCTL_ALIAS_STARTCPU twice before
-	 * the SEC2 RTOS would begin executing.
-	 */
-	switch (falcon->owner->index) {
-	case NVKM_SUBDEV_GSP:
-	case NVKM_ENGINE_SEC2:
-		nvkm_msec(device, 10,
-			u32 irqstat = nvkm_falcon_rd32(falcon, 0x008);
-			u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
-			if ((irqstat & 0x00000008) &&
-			    (flcn0dc & 0x00007000) == 0x00005000)
-				break;
-		);
-
-		nvkm_falcon_mask(falcon, 0x004, 0x00000008, 0x00000008);
-		nvkm_falcon_mask(falcon, 0x058, 0x00000002, 0x00000002);
-
-		nvkm_msec(device, 10,
-			u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
-			if ((flcn0dc & 0x00007000) == 0x00000000)
-				break;
-		);
-		break;
-	default:
-		break;
-	}
 }
 
 void

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/gv100.c

@@ -27,7 +27,7 @@ gv100_gsp_flcn = {
 	.load_imem = nvkm_falcon_v1_load_imem,
 	.load_dmem = nvkm_falcon_v1_load_dmem,
 	.read_dmem = nvkm_falcon_v1_read_dmem,
-	.bind_context = nvkm_falcon_v1_bind_context,
+	.bind_context = gp102_sec2_flcn_bind_context,
 	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
 	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
 	.set_start_addr = nvkm_falcon_v1_set_start_addr,