drm/nouveau/pmu: move init() falcon reset to non-nvfw code

Cleanup before falcon changes.

- fixes (attempt at?) reset of pmu while rtos is running, on gm20b

v2:
- remove extra whitespace

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c

@@ -81,6 +81,9 @@ nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend)
 {
 	struct nvkm_pmu *pmu = nvkm_pmu(subdev);
 
+	if (!subdev->use.enabled)
+		return 0;
+
 	if (pmu->func->fini)
 		pmu->func->fini(pmu);
 
@@ -94,42 +97,14 @@ nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend)
 	return 0;
 }
 
-static void
-nvkm_pmu_reset(struct nvkm_pmu *pmu)
-{
-	struct nvkm_device *device = pmu->subdev.device;
-
-	/* Reset. */
-	if (pmu->func->reset)
-		pmu->func->reset(pmu);
-
-	/* Wait for IMEM/DMEM scrubbing to be complete. */
-	nvkm_msec(device, 2000,
-		if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006))
-			break;
-	);
-}
-
 static int
 nvkm_pmu_init(struct nvkm_subdev *subdev)
 {
 	struct nvkm_pmu *pmu = nvkm_pmu(subdev);
-	struct nvkm_device *device = pmu->subdev.device;
 
 	if (!pmu->func->init)
 		return 0;
 
-	if (pmu->func->enabled(pmu)) {
-		/* Inhibit interrupts, and wait for idle. */
-		nvkm_wr32(device, 0x10a014, 0x0000ffff);
-		nvkm_msec(device, 2000,
-			if (!nvkm_rd32(device, 0x10a04c))
-				break;
-		);
-
-		nvkm_pmu_reset(pmu);
-	}
-
 	return pmu->func->init(pmu);
 }
 

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gk20a.c

@@ -197,7 +197,6 @@ gk20a_dvfs_data= {
 static const struct nvkm_pmu_func
 gk20a_pmu = {
 	.flcn = &gt215_pmu_flcn,
-	.enabled = gf100_pmu_enabled,
 	.init = gk20a_pmu_init,
 	.fini = gk20a_pmu_fini,
 	.reset = gf100_pmu_reset,

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gm200.c

@@ -55,11 +55,9 @@ gm200_pmu_flcn = {
 static const struct nvkm_pmu_func
 gm200_pmu = {
 	.flcn = &gm200_pmu_flcn,
-	.enabled = gf100_pmu_enabled,
 	.reset = gf100_pmu_reset,
 };
 
-
 int
 gm200_pmu_nofw(struct nvkm_pmu *pmu, int ver, const struct nvkm_pmu_fwif *fwif)
 {

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gm20b.c

@@ -166,7 +166,7 @@ gm20b_pmu_acr_init_wpr(struct nvkm_pmu *pmu)
 				     gm20b_pmu_acr_init_wpr_callback, pmu, 0);
 }
 
-int
+static int
 gm20b_pmu_initmsg(struct nvkm_pmu *pmu)
 {
 	struct nv_pmu_init_msg msg;
@@ -192,7 +192,7 @@ gm20b_pmu_initmsg(struct nvkm_pmu *pmu)
 	return gm20b_pmu_acr_init_wpr(pmu);
 }
 
-void
+static void
 gm20b_pmu_recv(struct nvkm_pmu *pmu)
 {
 	if (!pmu->initmsg_received) {
@@ -209,10 +209,9 @@ gm20b_pmu_recv(struct nvkm_pmu *pmu)
 	nvkm_falcon_msgq_recv(pmu->msgq);
 }
 
-static const struct nvkm_pmu_func
+const struct nvkm_pmu_func
 gm20b_pmu = {
 	.flcn = &gm200_pmu_flcn,
-	.enabled = gf100_pmu_enabled,
 	.intr = gt215_pmu_intr,
 	.recv = gm20b_pmu_recv,
 	.initmsg = gm20b_pmu_initmsg,

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gp102.c

@@ -31,16 +31,9 @@ gp102_pmu_reset(struct nvkm_pmu *pmu)
 	nvkm_mask(device, 0x10a3c0, 0x00000001, 0x00000000);
 }
 
-static bool
-gp102_pmu_enabled(struct nvkm_pmu *pmu)
-{
-	return !(nvkm_rd32(pmu->subdev.device, 0x10a3c0) & 0x00000001);
-}
-
 static const struct nvkm_pmu_func
 gp102_pmu = {
 	.flcn = &gm200_pmu_flcn,
-	.enabled = gp102_pmu_enabled,
 	.reset = gp102_pmu_reset,
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gp10b.c

@@ -76,16 +76,6 @@ gp10b_pmu_acr = {
 	.bootstrap_multiple_falcons = gp10b_pmu_acr_bootstrap_multiple_falcons,
 };
 
-static const struct nvkm_pmu_func
-gp10b_pmu = {
-	.flcn = &gm200_pmu_flcn,
-	.enabled = gf100_pmu_enabled,
-	.intr = gt215_pmu_intr,
-	.recv = gm20b_pmu_recv,
-	.initmsg = gm20b_pmu_initmsg,
-	.reset = gp102_pmu_reset,
-};
-
 #if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
 MODULE_FIRMWARE("nvidia/gp10b/pmu/desc.bin");
 MODULE_FIRMWARE("nvidia/gp10b/pmu/image.bin");
@@ -94,8 +84,8 @@ MODULE_FIRMWARE("nvidia/gp10b/pmu/sig.bin");
 
 static const struct nvkm_pmu_fwif
 gp10b_pmu_fwif[] = {
-	{  0, gm20b_pmu_load, &gp10b_pmu, &gp10b_pmu_acr },
-	{ -1, gm200_pmu_nofw, &gp10b_pmu },
+	{  0, gm20b_pmu_load, &gm20b_pmu, &gp10b_pmu_acr },
+	{ -1, gm200_pmu_nofw, &gm20b_pmu },
 	{}
 };
 

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c

@@ -184,6 +184,7 @@ static void
 gt215_pmu_reset(struct nvkm_pmu *pmu)
 {
 	struct nvkm_device *device = pmu->subdev.device;
+
 	nvkm_mask(device, 0x022210, 0x00000001, 0x00000000);
 	nvkm_mask(device, 0x022210, 0x00000001, 0x00000001);
 	nvkm_rd32(device, 0x022210);
@@ -201,6 +202,23 @@ gt215_pmu_init(struct nvkm_pmu *pmu)
 	struct nvkm_device *device = pmu->subdev.device;
 	int i;
 
+	/* Inhibit interrupts, and wait for idle. */
+	if (pmu->func->enabled(pmu)) {
+		nvkm_wr32(device, 0x10a014, 0x0000ffff);
+		nvkm_msec(device, 2000,
+			if (!nvkm_rd32(device, 0x10a04c))
+				break;
+		);
+	}
+
+	pmu->func->reset(pmu);
+
+	/* Wait for IMEM/DMEM scrubbing to be complete. */
+	nvkm_msec(device, 2000,
+		if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006))
+			break;
+	);
+
 	/* upload data segment */
 	nvkm_wr32(device, 0x10a1c0, 0x01000000);
 	for (i = 0; i < pmu->func->data.size / 4; i++)
@@ -243,20 +261,6 @@ gt215_pmu_init(struct nvkm_pmu *pmu)
 
 const struct nvkm_falcon_func
 gt215_pmu_flcn = {
-	.debug = 0xc08,
-	.fbif = 0xe00,
-	.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,
-	.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,
-	.start = nvkm_falcon_v1_start,
-	.enable = nvkm_falcon_v1_enable,
-	.disable = nvkm_falcon_v1_disable,
-	.cmdq = { 0x4a0, 0x4b0, 4 },
-	.msgq = { 0x4c8, 0x4cc, 0 },
 };
 
 static const struct nvkm_pmu_func

drivers/gpu/drm/nouveau/nvkm/subdev/pmu/priv.h

@@ -47,12 +47,11 @@ void gk110_pmu_pgob(struct nvkm_pmu *, bool);
 
 extern const struct nvkm_falcon_func gm200_pmu_flcn;
 
+extern const struct nvkm_pmu_func gm20b_pmu;
 void gm20b_pmu_acr_bld_patch(struct nvkm_acr *, u32, s64);
 void gm20b_pmu_acr_bld_write(struct nvkm_acr *, u32, struct nvkm_acr_lsfw *);
 int gm20b_pmu_acr_boot(struct nvkm_falcon *);
 int gm20b_pmu_acr_bootstrap_falcon(struct nvkm_falcon *, enum nvkm_acr_lsf_id);
-void gm20b_pmu_recv(struct nvkm_pmu *);
-int gm20b_pmu_initmsg(struct nvkm_pmu *);
 
 struct nvkm_pmu_fwif {
 	int version;