drm/nouveau/gr/gk104-: share implementation of ppc exception init

This was really inconsistent, some implementations could touch PPCs
that didn't exist, others neglected to touch ones that did.

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

drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h

@@ -120,6 +120,7 @@ struct gf100_gr_func {
 	int (*init)(struct gf100_gr *);
 	void (*init_gpc_mmu)(struct gf100_gr *);
 	void (*init_rop_active_fbps)(struct gf100_gr *);
+	void (*init_ppc_exceptions)(struct gf100_gr *);
 	void (*set_hww_esr_report_mask)(struct gf100_gr *);
 	const struct gf100_gr_pack *mmio;
 	struct {
@@ -139,6 +140,7 @@ int gf100_gr_rops(struct gf100_gr *);
 
 int gk104_gr_init(struct gf100_gr *);
 void gk104_gr_init_rop_active_fbps(struct gf100_gr *);
+void gk104_gr_init_ppc_exceptions(struct gf100_gr *);
 
 int gk20a_gr_init(struct gf100_gr *);
 

drivers/gpu/drm/nouveau/nvkm/engine/gr/gk104.c

@@ -188,6 +188,21 @@ gk104_gr_init_rop_active_fbps(struct gf100_gr *gr)
 	nvkm_mask(device, 0x408958, 0x0000000f, fbp_count); /* crop */
 }
 
+void
+gk104_gr_init_ppc_exceptions(struct gf100_gr *gr)
+{
+	struct nvkm_device *device = gr->base.engine.subdev.device;
+	int gpc, ppc;
+
+	for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
+		for (ppc = 0; ppc < gr->ppc_nr[gpc]; ppc++) {
+			if (!(gr->ppc_mask[gpc] & (1 << ppc)))
+				continue;
+			nvkm_wr32(device, PPC_UNIT(gpc, ppc, 0x038), 0xc0000000);
+		}
+	}
+}
+
 int
 gk104_gr_init(struct gf100_gr *gr)
 {
@@ -260,8 +275,9 @@ gk104_gr_init(struct gf100_gr *gr)
 	nvkm_mask(device, 0x419cc0, 0x00000008, 0x00000008);
 	nvkm_mask(device, 0x419eb4, 0x00001000, 0x00001000);
 
+	gr->func->init_ppc_exceptions(gr);
+
 	for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
-		nvkm_wr32(device, GPC_UNIT(gpc, 0x3038), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
@@ -324,6 +340,7 @@ static const struct gf100_gr_func
 gk104_gr = {
 	.init = gk104_gr_init,
 	.init_rop_active_fbps = gk104_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.mmio = gk104_gr_pack_mmio,
 	.fecs.ucode = &gk104_gr_fecs_ucode,
 	.gpccs.ucode = &gk104_gr_gpccs_ucode,

drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110.c

@@ -184,6 +184,7 @@ static const struct gf100_gr_func
 gk110_gr = {
 	.init = gk104_gr_init,
 	.init_rop_active_fbps = gk104_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.mmio = gk110_gr_pack_mmio,
 	.fecs.ucode = &gk110_gr_fecs_ucode,
 	.gpccs.ucode = &gk110_gr_gpccs_ucode,

drivers/gpu/drm/nouveau/nvkm/engine/gr/gk110b.c

@@ -104,6 +104,7 @@ static const struct gf100_gr_func
 gk110b_gr = {
 	.init = gk104_gr_init,
 	.init_rop_active_fbps = gk104_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.mmio = gk110b_gr_pack_mmio,
 	.fecs.ucode = &gk110_gr_fecs_ucode,
 	.gpccs.ucode = &gk110_gr_gpccs_ucode,

drivers/gpu/drm/nouveau/nvkm/engine/gr/gk208.c

@@ -163,6 +163,7 @@ static const struct gf100_gr_func
 gk208_gr = {
 	.init = gk104_gr_init,
 	.init_rop_active_fbps = gk104_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.mmio = gk208_gr_pack_mmio,
 	.fecs.ucode = &gk208_gr_fecs_ucode,
 	.gpccs.ucode = &gk208_gr_gpccs_ucode,

drivers/gpu/drm/nouveau/nvkm/engine/gr/gm107.c

@@ -316,7 +316,7 @@ gm107_gr_init(struct gf100_gr *gr)
 	const u32 magicgpc918 = DIV_ROUND_UP(0x00800000, gr->tpc_total);
 	u32 data[TPC_MAX / 8] = {};
 	u8  tpcnr[GPC_MAX];
-	int gpc, tpc, ppc, rop;
+	int gpc, tpc, rop;
 	int i;
 
 	nvkm_wr32(device, GPC_BCAST(0x0880), 0x00000000);
@@ -377,9 +377,9 @@ gm107_gr_init(struct gf100_gr *gr)
 	nvkm_wr32(device, 0x405844, 0x00ffffff);
 	nvkm_mask(device, 0x419cc0, 0x00000008, 0x00000008);
 
+	gr->func->init_ppc_exceptions(gr);
+
 	for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
-		for (ppc = 0; ppc < 2 /* gr->ppc_nr[gpc] */; ppc++)
-			nvkm_wr32(device, PPC_UNIT(gpc, ppc, 0x038), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
@@ -443,6 +443,7 @@ static const struct gf100_gr_func
 gm107_gr = {
 	.init = gm107_gr_init,
 	.init_rop_active_fbps = gk104_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.mmio = gm107_gr_pack_mmio,
 	.fecs.ucode = &gm107_gr_fecs_ucode,
 	.gpccs.ucode = &gm107_gr_gpccs_ucode,

drivers/gpu/drm/nouveau/nvkm/engine/gr/gm200.c

@@ -68,7 +68,7 @@ gm200_gr_init(struct gf100_gr *gr)
 	const u32 magicgpc918 = DIV_ROUND_UP(0x00800000, gr->tpc_total);
 	u32 data[TPC_MAX / 8] = {};
 	u8  tpcnr[GPC_MAX];
-	int gpc, tpc, ppc, rop;
+	int gpc, tpc, rop;
 	int i;
 
 	gr->func->init_gpc_mmu(gr);
@@ -126,9 +126,9 @@ gm200_gr_init(struct gf100_gr *gr)
 	nvkm_wr32(device, 0x405844, 0x00ffffff);
 	nvkm_mask(device, 0x419cc0, 0x00000008, 0x00000008);
 
+	gr->func->init_ppc_exceptions(gr);
+
 	for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
-		for (ppc = 0; ppc < gr->ppc_nr[gpc]; ppc++)
-			nvkm_wr32(device, PPC_UNIT(gpc, ppc, 0x038), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0420), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x0900), 0xc0000000);
 		nvkm_wr32(device, GPC_UNIT(gpc, 0x1028), 0xc0000000);
@@ -211,6 +211,7 @@ gm200_gr = {
 	.init = gm200_gr_init,
 	.init_gpc_mmu = gm200_gr_init_gpc_mmu,
 	.init_rop_active_fbps = gm200_gr_init_rop_active_fbps,
+	.init_ppc_exceptions = gk104_gr_init_ppc_exceptions,
 	.rops = gm200_gr_rops,
 	.ppc_nr = 2,
 	.grctx = &gm200_grctx,