mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 12:20:50 +07:00
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include "pci.h"
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int pci_hotplug (struct device *dev, char **envp, int num_envp,
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char *buffer, int buffer_size)
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{
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struct pci_dev *pdev;
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char *scratch;
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int i = 0;
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int length = 0;
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if (!dev)
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return -ENODEV;
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pdev = to_pci_dev(dev);
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if (!pdev)
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return -ENODEV;
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scratch = buffer;
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/* stuff we want to pass to /sbin/hotplug */
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envp[i++] = scratch;
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length += scnprintf (scratch, buffer_size - length, "PCI_CLASS=%04X",
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pdev->class);
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if ((buffer_size - length <= 0) || (i >= num_envp))
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return -ENOMEM;
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++length;
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scratch += length;
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envp[i++] = scratch;
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length += scnprintf (scratch, buffer_size - length, "PCI_ID=%04X:%04X",
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pdev->vendor, pdev->device);
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if ((buffer_size - length <= 0) || (i >= num_envp))
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return -ENOMEM;
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++length;
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scratch += length;
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envp[i++] = scratch;
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length += scnprintf (scratch, buffer_size - length,
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"PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
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pdev->subsystem_device);
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if ((buffer_size - length <= 0) || (i >= num_envp))
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return -ENOMEM;
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++length;
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scratch += length;
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envp[i++] = scratch;
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length += scnprintf (scratch, buffer_size - length, "PCI_SLOT_NAME=%s",
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pci_name(pdev));
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if ((buffer_size - length <= 0) || (i >= num_envp))
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return -ENOMEM;
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envp[i++] = scratch;
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length += scnprintf (scratch, buffer_size - length,
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"MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n",
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pdev->vendor, pdev->device,
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pdev->subsystem_vendor, pdev->subsystem_device,
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(u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
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(u8)(pdev->class));
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if ((buffer_size - length <= 0) || (i >= num_envp))
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return -ENOMEM;
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envp[i] = NULL;
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return 0;
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}
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