| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/kernel.h> |
| 2 | #include <linux/pci.h> |
| 3 | #include <linux/module.h> |
| 4 | #include "pci.h" |
| 5 | |
| 6 | int pci_hotplug (struct device *dev, char **envp, int num_envp, |
| 7 | char *buffer, int buffer_size) |
| 8 | { |
| 9 | struct pci_dev *pdev; |
| 10 | char *scratch; |
| 11 | int i = 0; |
| 12 | int length = 0; |
| 13 | |
| 14 | if (!dev) |
| 15 | return -ENODEV; |
| 16 | |
| 17 | pdev = to_pci_dev(dev); |
| 18 | if (!pdev) |
| 19 | return -ENODEV; |
| 20 | |
| 21 | scratch = buffer; |
| 22 | |
| 23 | /* stuff we want to pass to /sbin/hotplug */ |
| 24 | envp[i++] = scratch; |
| 25 | length += scnprintf (scratch, buffer_size - length, "PCI_CLASS=%04X", |
| 26 | pdev->class); |
| 27 | if ((buffer_size - length <= 0) || (i >= num_envp)) |
| 28 | return -ENOMEM; |
| 29 | ++length; |
| 30 | scratch += length; |
| 31 | |
| 32 | envp[i++] = scratch; |
| 33 | length += scnprintf (scratch, buffer_size - length, "PCI_ID=%04X:%04X", |
| 34 | pdev->vendor, pdev->device); |
| 35 | if ((buffer_size - length <= 0) || (i >= num_envp)) |
| 36 | return -ENOMEM; |
| 37 | ++length; |
| 38 | scratch += length; |
| 39 | |
| 40 | envp[i++] = scratch; |
| 41 | length += scnprintf (scratch, buffer_size - length, |
| 42 | "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, |
| 43 | pdev->subsystem_device); |
| 44 | if ((buffer_size - length <= 0) || (i >= num_envp)) |
| 45 | return -ENOMEM; |
| 46 | ++length; |
| 47 | scratch += length; |
| 48 | |
| 49 | envp[i++] = scratch; |
| 50 | length += scnprintf (scratch, buffer_size - length, "PCI_SLOT_NAME=%s", |
| 51 | pci_name(pdev)); |
| 52 | if ((buffer_size - length <= 0) || (i >= num_envp)) |
| 53 | return -ENOMEM; |
| 54 | |
| Greg KH | d1ded20 | 2005-05-05 11:57:25 -0700 | [diff] [blame] | 55 | envp[i++] = scratch; |
| 56 | length += scnprintf (scratch, buffer_size - length, |
| 57 | "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n", |
| 58 | pdev->vendor, pdev->device, |
| 59 | pdev->subsystem_vendor, pdev->subsystem_device, |
| 60 | (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), |
| 61 | (u8)(pdev->class)); |
| 62 | if ((buffer_size - length <= 0) || (i >= num_envp)) |
| 63 | return -ENOMEM; |
| 64 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | envp[i] = NULL; |
| 66 | |
| 67 | return 0; |
| 68 | } |