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i7core: fix get_devices routine for Xeon55xx
i7core_get_devices() were preparet to get just the first found device of each type. Due to that, on Xeon 55xx, only socket 1 were retrived. Rework i7core_get_devices() to clean it and to properly support Xeon 55xx. While here, fix a small typo. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab
parent
a639539fa2
commit
c77720b954
@ -410,7 +410,7 @@ static int i7core_get_active_channels(u8 socket, unsigned *channels,
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}
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}
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debugf0("Number of active channels on socked %d: %d\n",
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debugf0("Number of active channels on socket %d: %d\n",
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socket, *channels);
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return 0;
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@ -1126,107 +1126,137 @@ static void i7core_put_devices(void)
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*
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* Need to 'get' device 16 func 1 and func 2
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*/
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static int i7core_get_devices(void)
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int i7core_get_onedevice(struct pci_dev **prev, int devno)
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{
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int rc, i;
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struct pci_dev *pdev = NULL;
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u8 bus = 0;
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u8 socket = 0;
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for (i = 0; i < N_DEVS; i++) {
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pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
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pci_devs[devno].dev_id, *prev);
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/*
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* On Xeon 55xx, the Intel Quckpath Arch Generic Non-core pci buses
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* aren't announced by acpi. So, we need to use a legacy scan probing
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* to detect them
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*/
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if (unlikely(!pdev && !devno && !prev)) {
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pcibios_scan_specific_bus(254);
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pcibios_scan_specific_bus(255);
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pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
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pci_devs[i].dev_id, NULL);
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pci_devs[devno].dev_id, *prev);
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}
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if (!pdev && !i) {
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pcibios_scan_specific_bus(254);
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pcibios_scan_specific_bus(255);
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/*
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* On Xeon 55xx, the Intel Quckpath Arch Generic Non-core regs
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* is at addr 8086:2c40, instead of 8086:2c41. So, we need
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* to probe for the alternate address in case of failure
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*/
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if (pci_devs[devno].dev_id == PCI_DEVICE_ID_INTEL_I7_NOCORE && !pdev)
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pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
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PCI_DEVICE_ID_INTEL_I7_NOCORE_ALT, *prev);
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pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
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pci_devs[i].dev_id, NULL);
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if (!pdev) {
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if (*prev) {
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*prev = pdev;
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return 0;
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}
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/*
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* On Xeon 55xx, the Intel Quckpath Arch Generic Non-core regs
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* is at addr 8086:2c40, instead of 8086:2c41. So, we need
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* to probe for the alternate address in case of failure
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* Dev 3 function 2 only exists on chips with RDIMMs
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* so, it is ok to not found it
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*/
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if (pci_devs[i].dev_id == PCI_DEVICE_ID_INTEL_I7_NOCORE
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&& !pdev)
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pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
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PCI_DEVICE_ID_INTEL_I7_NOCORE_ALT, NULL);
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if (likely(pdev)) {
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bus = pdev->bus->number;
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if (bus == 0x3f)
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socket = 0;
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else
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socket = 255 - bus;
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if (socket >= NUM_SOCKETS) {
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i7core_printk(KERN_ERR,
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"Found unexpected socket for "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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bus, pci_devs[i].dev, pci_devs[i].func,
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PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id);
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rc = -ENODEV;
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goto error;
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}
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pci_devs[i].pdev[socket] = pdev;
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} else {
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i7core_printk(KERN_ERR,
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"Device not found: "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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bus, pci_devs[i].dev, pci_devs[i].func,
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PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id);
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/* Dev 3 function 2 only exists on chips with RDIMMs */
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if ((pci_devs[i].dev == 3) && (pci_devs[i].func == 2))
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continue;
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/* End of list, leave */
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rc = -ENODEV;
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goto error;
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if ((pci_devs[devno].dev == 3) && (pci_devs[devno].func == 2)) {
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*prev = pdev;
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return 0;
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}
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/* Sanity check */
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if (unlikely(PCI_SLOT(pdev->devfn) != pci_devs[i].dev ||
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PCI_FUNC(pdev->devfn) != pci_devs[i].func)) {
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i7core_printk(KERN_ERR,
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"Device PCI ID %04x:%04x "
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"has fn %d.%d instead of fn %d.%d\n",
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PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id,
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PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
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pci_devs[i].dev, pci_devs[i].func);
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rc = -EINVAL;
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goto error;
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}
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i7core_printk(KERN_ERR,
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"Device not found: dev %02x.%d PCI ID %04x:%04x\n",
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pci_devs[devno].dev, pci_devs[devno].func,
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id);
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/* Be sure that the device is enabled */
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rc = pci_enable_device(pdev);
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if (unlikely(rc < 0)) {
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i7core_printk(KERN_ERR,
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"Couldn't enable PCI ID %04x:%04x "
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"fn %d.%d\n",
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PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id,
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PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
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goto error;
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}
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/* End of list, leave */
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return -ENODEV;
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}
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bus = pdev->bus->number;
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i7core_printk(KERN_INFO,
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"Registered socket %d "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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socket, bus, pci_devs[i].dev, pci_devs[i].func,
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PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id);
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if (bus == 0x3f)
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socket = 0;
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else
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socket = 255 - bus;
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if (socket >= NUM_SOCKETS) {
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i7core_printk(KERN_ERR,
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"Unexpected socket for "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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bus, pci_devs[devno].dev, pci_devs[devno].func,
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id);
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pci_dev_put(pdev);
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return -ENODEV;
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}
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return 0;
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if (pci_devs[devno].pdev[socket]) {
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i7core_printk(KERN_ERR,
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"Duplicated device for "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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bus, pci_devs[devno].dev, pci_devs[devno].func,
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id);
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pci_dev_put(pdev);
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return -ENODEV;
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}
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error:
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i7core_put_devices();
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return -EINVAL;
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pci_devs[devno].pdev[socket] = pdev;
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/* Sanity check */
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if (unlikely(PCI_SLOT(pdev->devfn) != pci_devs[devno].dev ||
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PCI_FUNC(pdev->devfn) != pci_devs[devno].func)) {
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i7core_printk(KERN_ERR,
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"Device PCI ID %04x:%04x "
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"has dev %02x:%02x.%d instead of dev %02x:%02x.%d\n",
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id,
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bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
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bus, pci_devs[devno].dev, pci_devs[devno].func);
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return -ENODEV;
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}
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/* Be sure that the device is enabled */
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if (unlikely(pci_enable_device(pdev) < 0)) {
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i7core_printk(KERN_ERR,
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"Couldn't enable "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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bus, pci_devs[devno].dev, pci_devs[devno].func,
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id);
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return -ENODEV;
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}
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i7core_printk(KERN_INFO,
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"Registered socket %d "
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"dev %02x:%02x.%d PCI ID %04x:%04x\n",
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socket, bus, pci_devs[devno].dev, pci_devs[devno].func,
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PCI_VENDOR_ID_INTEL, pci_devs[devno].dev_id);
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*prev = pdev;
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return 0;
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}
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static int i7core_get_devices(void)
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{
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int i;
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struct pci_dev *pdev = NULL;
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for (i = 0; i < N_DEVS; i++) {
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pdev = NULL;
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do {
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if (i7core_get_onedevice(&pdev, i) < 0) {
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i7core_put_devices();
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return -ENODEV;
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}
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} while (pdev);
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}
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return 0;
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}
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static int mci_bind_devs(struct mem_ctl_info *mci)
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