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feat: look up Links PCI vendor/product via PCI ID database
This increases `initramfs` size by 356060 bytes (raw text database is
1.3 MiB).
In QEMU:
```
$ talosctl -n 172.20.0.2 get links eth0 -o yaml
spec:
...
productID: "0x1000"
vendorID: "0x1af4"
product: Virtio network device
vendor: Red Hat, Inc.
```
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
|
|
||
| // Package pci provides methods to access PCI-related data. | ||
| package pci | ||
|
|
||
| import ( | ||
| "github.com/siderolabs/go-pcidb/pkg/pcidb" | ||
| ) | ||
|
|
||
| // Device describes PCI device. | ||
| type Device struct { | ||
| VendorID uint16 | ||
| ProductID uint16 | ||
|
|
||
| Vendor string | ||
| Product string | ||
| } | ||
|
|
||
| // LookupDB looks up device info in the PCI database. | ||
| func (d *Device) LookupDB() { | ||
| d.Vendor, _ = pcidb.LookupVendor(d.VendorID) | ||
| d.Product, _ = pcidb.LookupProduct(d.VendorID, d.ProductID) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
|
|
||
| package pci | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "errors" | ||
| "fmt" | ||
| "io/fs" | ||
| "io/ioutil" | ||
| "strconv" | ||
| ) | ||
|
|
||
| const sysfsPath = "/sys/bus/pci/devices/%s/%s" | ||
|
|
||
| func readID(busPath, name string) (uint16, error) { | ||
| contents, err := ioutil.ReadFile(fmt.Sprintf(sysfsPath, busPath, name)) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| v, err := strconv.ParseUint(string(bytes.TrimSpace(contents)), 0, 16) | ||
|
|
||
| return uint16(v), err | ||
| } | ||
|
|
||
| // SysfsDeviceInfo looks up vendor and product ID from sysfs. | ||
| func SysfsDeviceInfo(busPath string) (*Device, error) { | ||
| var ( | ||
| d Device | ||
| err error | ||
| ) | ||
|
|
||
| d.ProductID, err = readID(busPath, "device") | ||
| if err != nil { | ||
| if errors.Is(err, fs.ErrNotExist) { | ||
| return nil, nil | ||
| } | ||
|
|
||
| return nil, err | ||
| } | ||
|
|
||
| d.VendorID, err = readID(busPath, "vendor") | ||
| if err != nil { | ||
| if errors.Is(err, fs.ErrNotExist) { | ||
| return nil, nil | ||
| } | ||
|
|
||
| return nil, err | ||
| } | ||
|
|
||
| return &d, err | ||
| } |
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