diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c new file mode 100644 index 000000000..97b3a28ca --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv40.c @@ -0,0 +1,223 @@ +/* + * Copyright 2013 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ +#include "ramnv40.h" + +#include <subdev/bios.h> +#include <subdev/bios/bit.h> +#include <subdev/bios/init.h> +#include <subdev/bios/pll.h> +#include <subdev/clk/pll.h> +#include <subdev/timer.h> + +static int +nv40_ram_calc(struct nvkm_ram *base, u32 freq) +{ + struct nv40_ram *ram = nv40_ram(base); + struct nvkm_subdev *subdev = &ram->base.fb->subdev; + struct nvkm_bios *bios = subdev->device->bios; + struct nvbios_pll pll; + int N1, M1, N2, M2; + int log2P, ret; + + ret = nvbios_pll_parse(bios, 0x04, &pll); + if (ret) { + nvkm_error(subdev, "mclk pll data not found\n"); + return ret; + } + + ret = nv04_pll_calc(subdev, &pll, freq, &N1, &M1, &N2, &M2, &log2P); + if (ret < 0) + return ret; + + ram->ctrl = 0x80000000 | (log2P << 16); + ram->ctrl |= min(pll.bias_p + log2P, (int)pll.max_p) << 20; + if (N2 == M2) { + ram->ctrl |= 0x00000100; + ram->coef = (N1 << 8) | M1; + } else { + ram->ctrl |= 0x40000000; + ram->coef = (N2 << 24) | (M2 << 16) | (N1 << 8) | M1; + } + + return 0; +} + +static int +nv40_ram_prog(struct nvkm_ram *base) +{ + struct nv40_ram *ram = nv40_ram(base); + struct nvkm_subdev *subdev = &ram->base.fb->subdev; + struct nvkm_device *device = subdev->device; + struct nvkm_bios *bios = device->bios; + struct bit_entry M; + u32 crtc_mask = 0; + u8 sr1[2]; + int i; + + /* determine which CRTCs are active, fetch VGA_SR1 for each */ + for (i = 0; i < 2; i++) { + u32 vbl = nvkm_rd32(device, 0x600808 + (i * 0x2000)); + u32 cnt = 0; + do { + if (vbl != nvkm_rd32(device, 0x600808 + (i * 0x2000))) { + nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); + sr1[i] = nvkm_rd08(device, 0x0c03c5 + (i * 0x2000)); + if (!(sr1[i] & 0x20)) + crtc_mask |= (1 << i); + break; + } + udelay(1); + } while (cnt++ < 32); + } + + /* wait for vblank start on active crtcs, disable memory access */ + for (i = 0; i < 2; i++) { + if (!(crtc_mask & (1 << i))) + continue; + + nvkm_msec(device, 2000, + u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); + if (!(tmp & 0x00010000)) + break; + ); + + nvkm_msec(device, 2000, + u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); + if ( (tmp & 0x00010000)) + break; + ); + + nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); + nvkm_wr08(device, 0x0c03c5 + (i * 0x2000), sr1[i] | 0x20); + } + + /* prepare ram for reclocking */ + nvkm_wr32(device, 0x1002d4, 0x00000001); /* precharge */ + nvkm_wr32(device, 0x1002d0, 0x00000001); /* refresh */ + nvkm_wr32(device, 0x1002d0, 0x00000001); /* refresh */ + nvkm_mask(device, 0x100210, 0x80000000, 0x00000000); /* no auto refresh */ + nvkm_wr32(device, 0x1002dc, 0x00000001); /* enable self-refresh */ + + /* change the PLL of each memory partition */ + nvkm_mask(device, 0x00c040, 0x0000c000, 0x00000000); + switch (device->chipset) { + case 0x40: + case 0x45: + case 0x41: + case 0x42: + case 0x47: + nvkm_mask(device, 0x004044, 0xc0771100, ram->ctrl); + nvkm_mask(device, 0x00402c, 0xc0771100, ram->ctrl); + nvkm_wr32(device, 0x004048, ram->coef); + nvkm_wr32(device, 0x004030, ram->coef); + fallthrough; + case 0x43: + case 0x49: + case 0x4b: + nvkm_mask(device, 0x004038, 0xc0771100, ram->ctrl); + nvkm_wr32(device, 0x00403c, ram->coef); + fallthrough; + default: + nvkm_mask(device, 0x004020, 0xc0771100, ram->ctrl); + nvkm_wr32(device, 0x004024, ram->coef); + break; + } + udelay(100); + nvkm_mask(device, 0x00c040, 0x0000c000, 0x0000c000); + + /* re-enable normal operation of memory controller */ + nvkm_wr32(device, 0x1002dc, 0x00000000); + nvkm_mask(device, 0x100210, 0x80000000, 0x80000000); + udelay(100); + + /* execute memory reset script from vbios */ + if (!bit_entry(bios, 'M', &M)) + nvbios_init(subdev, nvbios_rd16(bios, M.offset + 0x00)); + + /* make sure we're in vblank (hopefully the same one as before), and + * then re-enable crtc memory access + */ + for (i = 0; i < 2; i++) { + if (!(crtc_mask & (1 << i))) + continue; + + nvkm_msec(device, 2000, + u32 tmp = nvkm_rd32(device, 0x600808 + (i * 0x2000)); + if ( (tmp & 0x00010000)) + break; + ); + + nvkm_wr08(device, 0x0c03c4 + (i * 0x2000), 0x01); + nvkm_wr08(device, 0x0c03c5 + (i * 0x2000), sr1[i]); + } + + return 0; +} + +static void +nv40_ram_tidy(struct nvkm_ram *base) +{ +} + +static const struct nvkm_ram_func +nv40_ram_func = { + .calc = nv40_ram_calc, + .prog = nv40_ram_prog, + .tidy = nv40_ram_tidy, +}; + +int +nv40_ram_new_(struct nvkm_fb *fb, enum nvkm_ram_type type, u64 size, + struct nvkm_ram **pram) +{ + struct nv40_ram *ram; + if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL))) + return -ENOMEM; + *pram = &ram->base; + return nvkm_ram_ctor(&nv40_ram_func, fb, type, size, &ram->base); +} + +int +nv40_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) +{ + struct nvkm_device *device = fb->subdev.device; + u32 pbus1218 = nvkm_rd32(device, 0x001218); + u32 size = nvkm_rd32(device, 0x10020c) & 0xff000000; + enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN; + int ret; + + switch (pbus1218 & 0x00000300) { + case 0x00000000: type = NVKM_RAM_TYPE_SDRAM; break; + case 0x00000100: type = NVKM_RAM_TYPE_DDR1 ; break; + case 0x00000200: type = NVKM_RAM_TYPE_GDDR3; break; + case 0x00000300: type = NVKM_RAM_TYPE_DDR2 ; break; + } + + ret = nv40_ram_new_(fb, type, size, pram); + if (ret) + return ret; + + (*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1; + return 0; +} |