include/linux/i7300_idle.h

   1
   2 #ifndef I7300_IDLE_H
   3 #define I7300_IDLE_H
   4
   5 #include <linux/pci.h>
   6
   7 /*
   8  * I/O AT controls (PCI bus 0 device 8 function 0)
   9  * DIMM controls (PCI bus 0 device 16 function 1)
  10  */
  11 #define IOAT_BUS 0
  12 #define IOAT_DEVFN PCI_DEVFN(8, 0)
  13 #define MEMCTL_BUS 0
  14 #define MEMCTL_DEVFN PCI_DEVFN(16, 1)
  15
  16 struct fbd_ioat {
  17         unsigned int vendor;
  18         unsigned int ioat_dev;
  19 };
  20
  21 /*
  22  * The i5000 chip-set has the same hooks as the i7300
  23  * but support is disabled by default because this driver
  24  * has not been validated on that platform.
  25  */
  26 #define SUPPORT_I5000 0
  27
  28 static const struct fbd_ioat fbd_ioat_list[] = {
  29         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB},
  30 #if SUPPORT_I5000
  31         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT},
  32 #endif
  33         {0, 0}
  34 };
  35
  36 /* table of devices that work with this driver */
  37 static const struct pci_device_id pci_tbl[] = {
  38         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) },
  39 #if SUPPORT_I5000
  40         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
  41 #endif
  42         { } /* Terminating entry */
  43 };
  44
  45 /* Check for known platforms with I/O-AT */
  46 static inline int i7300_idle_platform_probe(struct pci_dev **fbd_dev,
  47                                                 struct pci_dev **ioat_dev)
  48 {
  49         int i;
  50         struct pci_dev *memdev, *dmadev;
  51
  52         memdev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN);
  53         if (!memdev)
  54                 return -ENODEV;
  55
  56         for (i = 0; pci_tbl[i].vendor != 0; i++) {
  57                 if (memdev->vendor == pci_tbl[i].vendor &&
  58                     memdev->device == pci_tbl[i].device) {
  59                         break;
  60                 }
  61         }
  62         if (pci_tbl[i].vendor == 0)
  63                 return -ENODEV;
  64
  65         dmadev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN);
  66         if (!dmadev)
  67                 return -ENODEV;
  68
  69         for (i = 0; fbd_ioat_list[i].vendor != 0; i++) {
  70                 if (dmadev->vendor == fbd_ioat_list[i].vendor &&
  71                     dmadev->device == fbd_ioat_list[i].ioat_dev) {
  72                         if (fbd_dev)
  73                                 *fbd_dev = memdev;
  74                         if (ioat_dev)
  75                                 *ioat_dev = dmadev;
  76
  77                         return 0;
  78                 }
  79         }
  80         return -ENODEV;
  81 }
  82
  83 #endif