com32/include/sys/pci.h

   1 #ifndef _SYS_PCI_H
   2 #define _SYS_PCI_H
   3
   4 #include <inttypes.h>
   5 #include <sys/io.h>
   6
   7 #define MAX_PCI_DEVICES  32
   8 #define MAX_PCI_BUSES   255
   9
  10 typedef uint32_t pciaddr_t;
  11
  12 /* a structure for extended pci information */
  13 struct pci_dev_info {
  14         char     *vendor_name;
  15         char     *product_name;
  16         char     *linux_kernel_module;
  17 };
  18
  19 /* a struct to represent a pci device */
  20 struct pci_device {
  21         uint16_t vendor;
  22         uint16_t product;
  23         uint16_t sub_vendor;
  24         uint16_t sub_product;
  25         uint8_t  revision;
  26         struct pci_dev_info *pci_dev_info;
  27 };
  28
  29 struct pci_bus {
  30         uint16_t id;
  31         struct pci_device *pci_device[MAX_PCI_DEVICES];
  32         uint8_t pci_device_count;
  33 };
  34
  35 struct pci_device_list {
  36         struct pci_device pci_device[MAX_PCI_DEVICES];
  37         uint8_t count;
  38 };
  39
  40 struct pci_bus_list {
  41         struct pci_bus pci_bus[MAX_PCI_BUSES];
  42         uint8_t count;
  43 };
  44
  45 struct match {
  46   struct match *next;
  47   uint32_t did;
  48   uint32_t did_mask;
  49   uint32_t sid;
  50   uint32_t sid_mask;
  51   uint8_t rid_min, rid_max;
  52   char *filename;
  53 };
  54
  55 static inline pciaddr_t pci_mkaddr(uint32_t bus, uint32_t dev,
  56                                    uint32_t func, uint32_t reg)
  57 {
  58   return 0x80000000 | ((bus & 0xff) << 16) | ((dev & 0x1f) << 11) |
  59     ((func & 0x07) << 8) | (reg & 0xff);
  60 }
  61
  62 enum pci_config_type {
  63   PCI_CFG_NONE          = -1,   /* badness */
  64   PCI_CFG_AUTO          = 0,    /* autodetect */
  65   PCI_CFG_TYPE1         = 1,
  66   PCI_CFG_TYPE2         = 2,
  67   PCI_CFG_BIOS          = 3,
  68 };
  69
  70 enum pci_config_type pci_set_config_type(enum pci_config_type);
  71
  72 uint8_t pci_readb(pciaddr_t);
  73 uint16_t pci_readw(pciaddr_t);
  74 uint32_t pci_readl(pciaddr_t);
  75 void pci_writeb(uint8_t, pciaddr_t);
  76 void pci_writew(uint16_t, pciaddr_t);
  77 void pci_writel(uint32_t, pciaddr_t);
  78
  79 extern int pci_scan(struct pci_bus_list *pci_bus_list, struct pci_device_list *pci_device_list);
  80 extern struct match * find_pci_device(struct pci_device_list *pci_device_list, struct match *list);
  81 extern void get_name_from_pci_ids(struct pci_device_list *pci_device_list);
  82 extern void get_module_name_from_pci_ids(struct pci_device_list *pci_device_list);
  83 #endif /* _SYS_PCI_H */