drm/nouveau/bios/rammap: Identify DLLoff for >= GF100

Signed-off-by: Roy Spliet <rspliet@eclipso.eu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/ramcfg.h

@@ -78,7 +78,6 @@ struct nvbios_ramcfg {
 			unsigned ramcfg_11_01_04:1;
 			unsigned ramcfg_11_01_08:1;
 			unsigned ramcfg_11_01_10:1;
-			unsigned ramcfg_11_01_20:1;
 			unsigned ramcfg_11_01_40:1;
 			unsigned ramcfg_11_01_80:1;
 			unsigned ramcfg_11_02_03:2;

drivers/gpu/drm/nouveau/nvkm/subdev/bios/rammap.c

@@ -219,7 +219,7 @@ nvbios_rammapSp(struct nvkm_bios *bios, u32 data,
 		p->ramcfg_11_01_04 = (nvbios_rd08(bios, data + 0x01) & 0x04) >> 2;
 		p->ramcfg_11_01_08 = (nvbios_rd08(bios, data + 0x01) & 0x08) >> 3;
 		p->ramcfg_11_01_10 = (nvbios_rd08(bios, data + 0x01) & 0x10) >> 4;
-		p->ramcfg_11_01_20 = (nvbios_rd08(bios, data + 0x01) & 0x20) >> 5;
+		p->ramcfg_DLLoff =   (nvbios_rd08(bios, data + 0x01) & 0x20) >> 5;
 		p->ramcfg_11_01_40 = (nvbios_rd08(bios, data + 0x01) & 0x40) >> 6;
 		p->ramcfg_11_01_80 = (nvbios_rd08(bios, data + 0x01) & 0x80) >> 7;
 		p->ramcfg_11_02_03 = (nvbios_rd08(bios, data + 0x02) & 0x03) >> 0;

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gddr5.c

@@ -38,11 +38,12 @@ nvkm_gddr5_calc(struct nvkm_ram *ram, bool nuts)
 	int WL, CL, WR, at[2], dt, ds;
 	int rq = ram->freq < 1000000; /* XXX */
 
+	xd = !ram->next->bios.ramcfg_DLLoff;
+
 	switch (ram->next->bios.ramcfg_ver) {
 	case 0x11:
 		pd =  ram->next->bios.ramcfg_11_01_80;
 		lf =  ram->next->bios.ramcfg_11_01_40;
-		xd = !ram->next->bios.ramcfg_11_01_20;
 		vh =  ram->next->bios.ramcfg_11_02_10;
 		vr =  ram->next->bios.ramcfg_11_02_04;
 		vo =  ram->next->bios.ramcfg_11_06;

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.c

@@ -673,6 +673,25 @@ gk104_ram_calc_gddr5(struct gk104_ram *ram, u32 freq)
  * DDR3
  ******************************************************************************/
 
+static void
+nvkm_sddr3_dll_reset(struct gk104_ramfuc *fuc)
+{
+	ram_nuke(fuc, mr[0]);
+	ram_mask(fuc, mr[0], 0x100, 0x100);
+	ram_mask(fuc, mr[0], 0x100, 0x000);
+}
+
+static void
+nvkm_sddr3_dll_disable(struct gk104_ramfuc *fuc)
+{
+	u32 mr1_old = ram_rd32(fuc, mr[1]);
+
+	if (!(mr1_old & 0x1)) {
+		ram_mask(fuc, mr[1], 0x1, 0x1);
+		ram_nsec(fuc, 1000);
+	}
+}
+
 static int
 gk104_ram_calc_sddr3(struct gk104_ram *ram, u32 freq)
 {
@@ -702,6 +721,10 @@ gk104_ram_calc_sddr3(struct gk104_ram *ram, u32 freq)
 		ram_mask(fuc, 0x10f808, 0x04000000, 0x04000000);
 
 	ram_wr32(fuc, 0x10f314, 0x00000001); /* PRECHARGE */
+
+	if (next->bios.ramcfg_DLLoff)
+		nvkm_sddr3_dll_disable(fuc);
+
 	ram_wr32(fuc, 0x10f210, 0x00000000); /* REFRESH_AUTO = 0 */
 	ram_wr32(fuc, 0x10f310, 0x00000001); /* REFRESH */
 	ram_mask(fuc, 0x10f200, 0x80000000, 0x80000000);
@@ -879,17 +902,20 @@ gk104_ram_calc_sddr3(struct gk104_ram *ram, u32 freq)
 	ram_wr32(fuc, 0x10f210, 0x80000000); /* REFRESH_AUTO = 1 */
 	ram_nsec(fuc, 1000);
 
-	ram_nuke(fuc, mr[0]);
-	ram_mask(fuc, mr[0], 0x100, 0x100);
-	ram_mask(fuc, mr[0], 0x100, 0x000);
+	if (!next->bios.ramcfg_DLLoff) {
+		ram_mask(fuc, mr[1], 0x1, 0x0);
+		nvkm_sddr3_dll_reset(fuc);
+	}
 
-	ram_mask(fuc, mr[2], 0xfff, ram->base.mr[2]);
+	ram_mask(fuc, mr[2], 0x00000fff, ram->base.mr[2]);
+	ram_mask(fuc, mr[1], 0xffffffff, ram->base.mr[1]);
 	ram_wr32(fuc, mr[0], ram->base.mr[0]);
 	ram_nsec(fuc, 1000);
 
-	ram_nuke(fuc, mr[0]);
-	ram_mask(fuc, mr[0], 0x100, 0x100);
-	ram_mask(fuc, mr[0], 0x100, 0x000);
+	if (!next->bios.ramcfg_DLLoff) {
+		nvkm_sddr3_dll_reset(fuc);
+		ram_nsec(fuc, 1000);
+	}
 
 	if (vc == 0 && ram_have(fuc, gpio2E)) {
 		u32 temp  = ram_mask(fuc, gpio2E, 0x3000, fuc->r_func2E[0]);
@@ -1600,6 +1626,7 @@ gk104_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
 		break;
 	case NVKM_RAM_TYPE_DDR3:
 		ram->fuc.r_mr[0] = ramfuc_reg(0x10f300);
+		ram->fuc.r_mr[1] = ramfuc_reg(0x10f304);
 		ram->fuc.r_mr[2] = ramfuc_reg(0x10f320);
 		break;
 	default:

drivers/gpu/drm/nouveau/nvkm/subdev/fb/sddr3.c

@@ -70,6 +70,8 @@ nvkm_sddr3_calc(struct nvkm_ram *ram)
 {
 	int CWL, CL, WR, DLL = 0, ODT = 0;
 
+	DLL = !ram->next->bios.ramcfg_DLLoff;
+
 	switch (ram->next->bios.timing_ver) {
 	case 0x10:
 		if (ram->next->bios.timing_hdr < 0x17) {
@@ -79,7 +81,6 @@ nvkm_sddr3_calc(struct nvkm_ram *ram)
 		CWL = ram->next->bios.timing_10_CWL;
 		CL  = ram->next->bios.timing_10_CL;
 		WR  = ram->next->bios.timing_10_WR;
-		DLL = !ram->next->bios.ramcfg_DLLoff;
 		ODT = ram->next->bios.timing_10_ODT;
 		break;
 	case 0x20:
@@ -87,7 +88,6 @@ nvkm_sddr3_calc(struct nvkm_ram *ram)
 		CL  = (ram->next->bios.timing[1] & 0x0000001f) >> 0;
 		WR  = (ram->next->bios.timing[2] & 0x007f0000) >> 16;
 		/* XXX: Get these values from the VBIOS instead */
-		DLL = !(ram->mr[1] & 0x1);
 		ODT =   (ram->mr[1] & 0x004) >> 2 |
 			(ram->mr[1] & 0x040) >> 5 |
 		        (ram->mr[1] & 0x200) >> 7;