diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 68 |
1 files changed, 53 insertions, 15 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c index 4bd61c169ca8..9f9a1867da72 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c @@ -1723,37 +1723,75 @@ union nps_info { struct nps_info_v1_0 v1; }; +static int amdgpu_discovery_refresh_nps_info(struct amdgpu_device *adev, + union nps_info *nps_data) +{ + uint64_t vram_size, pos, offset; + struct nps_info_header *nhdr; + struct binary_header bhdr; + uint16_t checksum; + + vram_size = (uint64_t)RREG32(mmRCC_CONFIG_MEMSIZE) << 20; + pos = vram_size - DISCOVERY_TMR_OFFSET; + amdgpu_device_vram_access(adev, pos, &bhdr, sizeof(bhdr), false); + + offset = le16_to_cpu(bhdr.table_list[NPS_INFO].offset); + checksum = le16_to_cpu(bhdr.table_list[NPS_INFO].checksum); + + amdgpu_device_vram_access(adev, (pos + offset), nps_data, + sizeof(*nps_data), false); + + nhdr = (struct nps_info_header *)(nps_data); + if (!amdgpu_discovery_verify_checksum((uint8_t *)nps_data, + le32_to_cpu(nhdr->size_bytes), + checksum)) { + dev_err(adev->dev, "nps data refresh, checksum mismatch\n"); + return -EINVAL; + } + + return 0; +} + int amdgpu_discovery_get_nps_info(struct amdgpu_device *adev, uint32_t *nps_type, struct amdgpu_gmc_memrange **ranges, - int *range_cnt) + int *range_cnt, bool refresh) { struct amdgpu_gmc_memrange *mem_ranges; struct binary_header *bhdr; union nps_info *nps_info; + union nps_info nps_data; u16 offset; - int i; + int i, r; if (!nps_type || !range_cnt || !ranges) return -EINVAL; - if (!adev->mman.discovery_bin) { - dev_err(adev->dev, - "fetch mem range failed, ip discovery uninitialized\n"); - return -EINVAL; - } + if (refresh) { + r = amdgpu_discovery_refresh_nps_info(adev, &nps_data); + if (r) + return r; + nps_info = &nps_data; + } else { + if (!adev->mman.discovery_bin) { + dev_err(adev->dev, + "fetch mem range failed, ip discovery uninitialized\n"); + return -EINVAL; + } - bhdr = (struct binary_header *)adev->mman.discovery_bin; - offset = le16_to_cpu(bhdr->table_list[NPS_INFO].offset); + bhdr = (struct binary_header *)adev->mman.discovery_bin; + offset = le16_to_cpu(bhdr->table_list[NPS_INFO].offset); - if (!offset) - return -ENOENT; + if (!offset) + return -ENOENT; - /* If verification fails, return as if NPS table doesn't exist */ - if (amdgpu_discovery_verify_npsinfo(adev, bhdr)) - return -ENOENT; + /* If verification fails, return as if NPS table doesn't exist */ + if (amdgpu_discovery_verify_npsinfo(adev, bhdr)) + return -ENOENT; - nps_info = (union nps_info *)(adev->mman.discovery_bin + offset); + nps_info = + (union nps_info *)(adev->mman.discovery_bin + offset); + } switch (le16_to_cpu(nps_info->v1.header.version_major)) { case 1: |