+#define T(t) cfg->timing_10_##t
+static int
+nv50_ram_timing_calc(struct nv50_ram *ram, u32 *timing)
+{
+ struct nvbios_ramcfg *cfg = &ram->base.target.bios;
+ struct nvkm_subdev *subdev = &ram->base.fb->subdev;
+ struct nvkm_device *device = subdev->device;
+ u32 cur2, cur4, cur7, cur8;
+ u8 unkt3b;
+
+ cur2 = nvkm_rd32(device, 0x100228);
+ cur4 = nvkm_rd32(device, 0x100230);
+ cur7 = nvkm_rd32(device, 0x10023c);
+ cur8 = nvkm_rd32(device, 0x100240);
+
+ switch ((!T(CWL)) * ram->base.type) {
+ case NVKM_RAM_TYPE_DDR2:
+ T(CWL) = T(CL) - 1;
+ break;
+ case NVKM_RAM_TYPE_GDDR3:
+ T(CWL) = ((cur2 & 0xff000000) >> 24) + 1;
+ break;
+ }
+
+ /* XXX: N=1 is not proper statistics */
+ if (device->chipset == 0xa0) {
+ unkt3b = 0x19 + ram->base.next->bios.rammap_00_16_40;
+ timing[6] = (0x2d + T(CL) - T(CWL) +
+ ram->base.next->bios.rammap_00_16_40) << 16 |
+ T(CWL) << 8 |
+ (0x2f + T(CL) - T(CWL));
+ } else {
+ unkt3b = 0x16;
+ timing[6] = (0x2b + T(CL) - T(CWL)) << 16 |
+ max_t(s8, T(CWL) - 2, 1) << 8 |
+ (0x2e + T(CL) - T(CWL));
+ }
+
+ timing[0] = (T(RP) << 24 | T(RAS) << 16 | T(RFC) << 8 | T(RC));
+ timing[1] = (T(WR) + 1 + T(CWL)) << 24 |
+ max_t(u8, T(18), 1) << 16 |
+ (T(WTR) + 1 + T(CWL)) << 8 |
+ (3 + T(CL) - T(CWL));
+ timing[2] = (T(CWL) - 1) << 24 |
+ (T(RRD) << 16) |
+ (T(RCDWR) << 8) |
+ T(RCDRD);
+ timing[3] = (unkt3b - 2 + T(CL)) << 24 |
+ unkt3b << 16 |
+ (T(CL) - 1) << 8 |
+ (T(CL) - 1);
+ timing[4] = (cur4 & 0xffff0000) |
+ T(13) << 8 |
+ T(13);
+ timing[5] = T(RFC) << 24 |
+ max_t(u8, T(RCDRD), T(RCDWR)) << 16 |
+ T(RP);
+ /* Timing 6 is already done above */
+ timing[7] = (cur7 & 0xff00ffff) | (T(CL) - 1) << 16;
+ timing[8] = (cur8 & 0xffffff00);
+
+ /* XXX: P.version == 1 only has DDR2 and GDDR3? */
+ if (ram->base.type == NVKM_RAM_TYPE_DDR2) {
+ timing[5] |= (T(CL) + 3) << 8;
+ timing[8] |= (T(CL) - 4);
+ } else
+ if (ram->base.type == NVKM_RAM_TYPE_GDDR3) {
+ timing[5] |= (T(CL) + 2) << 8;
+ timing[8] |= (T(CL) - 2);
+ }
+
+ nvkm_debug(subdev, " 220: %08x %08x %08x %08x\n",
+ timing[0], timing[1], timing[2], timing[3]);
+ nvkm_debug(subdev, " 230: %08x %08x %08x %08x\n",
+ timing[4], timing[5], timing[6], timing[7]);
+ nvkm_debug(subdev, " 240: %08x\n", timing[8]);
+ return 0;
+}
+
+static int
+nv50_ram_timing_read(struct nv50_ram *ram, u32 *timing)
+{
+ unsigned int i;
+ struct nvbios_ramcfg *cfg = &ram->base.target.bios;
+ struct nvkm_subdev *subdev = &ram->base.fb->subdev;
+ struct nvkm_device *device = subdev->device;
+
+ for (i = 0; i <= 8; i++)
+ timing[i] = nvkm_rd32(device, 0x100220 + (i * 4));
+
+ /* Derive the bare minimum for the MR calculation to succeed */
+ cfg->timing_ver = 0x10;
+ T(CL) = (timing[3] & 0xff) + 1;
+
+ switch (ram->base.type) {
+ case NVKM_RAM_TYPE_DDR2:
+ T(CWL) = T(CL) - 1;
+ break;
+ case NVKM_RAM_TYPE_GDDR3:
+ T(CWL) = ((timing[2] & 0xff000000) >> 24) + 1;
+ break;
+ default:
+ return -ENOSYS;
+ break;
+ }
+
+ T(WR) = ((timing[1] >> 24) & 0xff) - 1 - T(CWL);
+
+ return 0;
+}
+#undef T
+
+static void
+nvkm_sddr2_dll_reset(struct nv50_ramseq *hwsq)
+{
+ ram_mask(hwsq, mr[0], 0x100, 0x100);
+ ram_mask(hwsq, mr[0], 0x100, 0x000);
+ ram_nsec(hwsq, 24000);
+}
+
+static void
+nv50_ram_gpio(struct nv50_ramseq *hwsq, u8 tag, u32 val)
+{
+ struct nvkm_gpio *gpio = hwsq->base.subdev->device->gpio;
+ struct dcb_gpio_func func;
+ u32 reg, sh, gpio_val;
+ int ret;
+
+ if (nvkm_gpio_get(gpio, 0, tag, DCB_GPIO_UNUSED) != val) {
+ ret = nvkm_gpio_find(gpio, 0, tag, DCB_GPIO_UNUSED, &func);
+ if (ret)
+ return;
+
+ reg = func.line >> 3;
+ sh = (func.line & 0x7) << 2;
+ gpio_val = ram_rd32(hwsq, gpio[reg]);
+
+ if (gpio_val & (8 << sh))
+ val = !val;
+ if (!(func.log[1] & 1))
+ val = !val;
+
+ ram_mask(hwsq, gpio[reg], (0x3 << sh), ((val | 0x2) << sh));
+ ram_nsec(hwsq, 20000);
+ }
+}