src/include/device/pci_ops.h

   1 #ifndef PCI_OPS_H
   2 #define PCI_OPS_H
   3
   4 #include <compiler.h>
   5 #include <stdint.h>
   6 #include <device/device.h>
   7 #include <arch/pci_ops.h>
   8
   9 #ifndef __SIMPLE_DEVICE__
  10 u8 pci_read_config8(struct device *dev, unsigned int where);
  11 u16 pci_read_config16(struct device *dev, unsigned int where);
  12 u32 pci_read_config32(struct device *dev, unsigned int where);
  13 void pci_write_config8(struct device *dev, unsigned int where, u8 val);
  14 void pci_write_config16(struct device *dev, unsigned int where, u16 val);
  15 void pci_write_config32(struct device *dev, unsigned int where, u32 val);
  16
  17 #endif
  18
  19 /*
  20  * Use device_t here as the functions are to be used with either
  21  * __SIMPLE_DEVICE__ defined or undefined.
  22  */
  23 static __always_inline
  24 void pci_or_config8(device_t dev, unsigned int where, u8 ormask)
  25 {
  26         u8 value = pci_read_config8(dev, where);
  27         pci_write_config8(dev, where, value | ormask);
  28 }
  29
  30 static __always_inline
  31 void pci_or_config16(device_t dev, unsigned int where, u16 ormask)
  32 {
  33         u16 value = pci_read_config16(dev, where);
  34         pci_write_config16(dev, where, value | ormask);
  35 }
  36
  37 static __always_inline
  38 void pci_or_config32(device_t dev, unsigned int where, u32 ormask)
  39 {
  40         u32 value = pci_read_config32(dev, where);
  41         pci_write_config32(dev, where, value | ormask);
  42 }
  43
  44 static __always_inline
  45 void pci_update_config8(device_t dev, int reg, u8 mask, u8 or)
  46 {
  47         u8 reg8;
  48
  49         reg8 = pci_read_config8(dev, reg);
  50         reg8 &= mask;
  51         reg8 |= or;
  52         pci_write_config8(dev, reg, reg8);
  53 }
  54
  55 static __always_inline
  56 void pci_update_config16(device_t dev, int reg, u16 mask, u16 or)
  57 {
  58         u16 reg16;
  59
  60         reg16 = pci_read_config16(dev, reg);
  61         reg16 &= mask;
  62         reg16 |= or;
  63         pci_write_config16(dev, reg, reg16);
  64 }
  65
  66 static __always_inline
  67 void pci_update_config32(device_t dev, int reg, u32 mask, u32 or)
  68 {
  69         u32 reg32;
  70
  71         reg32 = pci_read_config32(dev, reg);
  72         reg32 &= mask;
  73         reg32 |= or;
  74         pci_write_config32(dev, reg, reg32);
  75 }
  76
  77 const struct pci_bus_operations *pci_bus_default_ops(struct device *dev);
  78
  79 #endif /* PCI_OPS_H */