diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/pmu.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bios/pmu.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pmu.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pmu.c new file mode 100644 index 000000000..b4a308f3c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pmu.c @@ -0,0 +1,105 @@ +/* + * Copyright 2014 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 <bskeggs@redhat.com> + */ +#include <subdev/bios.h> +#include <subdev/bios/bit.h> +#include <subdev/bios/image.h> +#include <subdev/bios/pmu.h> + +u32 +nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) +{ + struct bit_entry bit_p; + u32 data = 0; + + if (!bit_entry(bios, 'p', &bit_p)) { + if (bit_p.version == 2 && bit_p.length >= 4) + data = nvbios_rd32(bios, bit_p.offset + 0x00); + if (data) { + *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */ + *hdr = nvbios_rd08(bios, data + 0x01); + *len = nvbios_rd08(bios, data + 0x02); + *cnt = nvbios_rd08(bios, data + 0x03); + } + } + + return data; +} + +u32 +nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr) +{ + u8 cnt, len; + u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len); + if (data && idx < cnt) { + data = data + *hdr + (idx * len); + *hdr = len; + return data; + } + return 0; +} + +u32 +nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, + struct nvbios_pmuE *info) +{ + u32 data = nvbios_pmuEe(bios, idx, ver, hdr); + memset(info, 0x00, sizeof(*info)); + switch (!!data * *ver) { + default: + info->type = nvbios_rd08(bios, data + 0x00); + info->data = nvbios_rd32(bios, data + 0x02); + break; + } + return data; +} + +bool +nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info) +{ + struct nvbios_pmuE pmuE; + u8 ver, hdr, idx = 0; + u32 data; + memset(info, 0x00, sizeof(*info)); + while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) { + if (pmuE.type == type && (data = pmuE.data)) { + info->init_addr_pmu = nvbios_rd32(bios, data + 0x08); + info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c); + info->boot_addr = data + 0x30; + info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) + + nvbios_rd32(bios, data + 0x18); + info->boot_size = nvbios_rd32(bios, data + 0x1c) - + nvbios_rd32(bios, data + 0x18); + info->code_addr = info->boot_addr + info->boot_size; + info->code_addr_pmu = info->boot_addr_pmu + + info->boot_size; + info->code_size = nvbios_rd32(bios, data + 0x20); + info->data_addr = data + 0x30 + + nvbios_rd32(bios, data + 0x24); + info->data_addr_pmu = nvbios_rd32(bios, data + 0x28); + info->data_size = nvbios_rd32(bios, data + 0x2c); + return true; + } + } + return false; +} |