src/include/device/pci.h

   1 /*
   2  *      PCI defines and function prototypes
   3  *      Copyright 1994, Drew Eckhardt
   4  *      Copyright 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
   5  *
   6  *      For more information, please consult the following manuals (look at
   7  *      http://www.pcisig.com/ for how to get them):
   8  *
   9  *      PCI BIOS Specification
  10  *      PCI Local Bus Specification
  11  *      PCI to PCI Bridge Specification
  12  *      PCI System Design Guide
  13  */
  14
  15 #ifndef PCI_H
  16 #define PCI_H
  17
  18 #if CONFIG_PCI
  19
  20 #include <stdint.h>
  21 #include <stddef.h>
  22 #include <rules.h>
  23 #include <arch/io.h>
  24 #include <device/pci_def.h>
  25 #include <device/resource.h>
  26 #include <device/device.h>
  27 #include <device/pci_ops.h>
  28 #include <device/pci_rom.h>
  29
  30 #ifndef __SIMPLE_DEVICE__
  31
  32 /* Common pci operations without a standard interface */
  33 struct pci_operations {
  34         /* set the Subsystem IDs for the PCI device */
  35         void (*set_subsystem)(device_t dev, unsigned int vendor,
  36                 unsigned int device);
  37         void (*set_L1_ss_latency)(device_t dev, unsigned int off);
  38 };
  39
  40 /* Common pci bus operations */
  41 struct pci_bus_operations {
  42         uint8_t   (*read8)(struct bus *pbus, int bus, int devfn, int where);
  43         uint16_t (*read16)(struct bus *pbus, int bus, int devfn, int where);
  44         uint32_t (*read32)(struct bus *pbus, int bus, int devfn, int where);
  45         void     (*write8)(struct bus *pbus, int bus, int devfn, int where, uint8_t val);
  46         void    (*write16)(struct bus *pbus, int bus, int devfn, int where, uint16_t val);
  47         void    (*write32)(struct bus *pbus, int bus, int devfn, int where, uint32_t val);
  48 };
  49
  50 struct pci_driver {
  51         const struct device_operations *ops;
  52         unsigned short vendor;
  53         unsigned short device;
  54         const unsigned short *devices;
  55 };
  56
  57 #define __pci_driver __attribute__ ((used, __section__(".rodata.pci_driver")))
  58 /** start of compile time generated pci driver array */
  59 extern struct pci_driver _pci_drivers[];
  60 /** end of compile time generated pci driver array */
  61 extern struct pci_driver _epci_drivers[];
  62
  63
  64 extern struct device_operations default_pci_ops_dev;
  65 extern struct device_operations default_pci_ops_bus;
  66
  67 void pci_dev_read_resources(device_t dev);
  68 void pci_bus_read_resources(device_t dev);
  69 void pci_dev_set_resources(device_t dev);
  70 void pci_dev_enable_resources(device_t dev);
  71 void pci_bus_enable_resources(device_t dev);
  72 void pci_bus_reset(struct bus *bus);
  73 device_t pci_probe_dev(device_t dev, struct bus *bus, unsigned int devfn);
  74
  75 void do_pci_scan_bridge(device_t bus,
  76         void (*do_scan_bus)(struct bus *bus,
  77                 unsigned int min_devfn, unsigned int max_devfn));
  78
  79 void pci_scan_bridge(device_t bus);
  80 void pci_scan_bus(struct bus *bus, unsigned int min_devfn,
  81         unsigned int max_devfn);
  82
  83 uint8_t pci_moving_config8(struct device *dev, unsigned int reg);
  84 uint16_t pci_moving_config16(struct device *dev, unsigned int reg);
  85 uint32_t pci_moving_config32(struct device *dev, unsigned int reg);
  86 struct resource *pci_get_resource(struct device *dev, unsigned long index);
  87 void pci_dev_set_subsystem(device_t dev, unsigned int vendor,
  88         unsigned int device);
  89 void pci_dev_init(struct device *dev);
  90 unsigned int pci_match_simple_dev(device_t dev, pci_devfn_t sdev);
  91
  92 const char *pin_to_str(int pin);
  93 int get_pci_irq_pins(device_t dev, device_t *parent_bdg);
  94 void pci_assign_irqs(unsigned int bus, unsigned int slot,
  95                      const unsigned char pIntAtoD[4]);
  96 const char *get_pci_class_name(device_t dev);
  97 const char *get_pci_subclass_name(device_t dev);
  98
  99 #define PCI_IO_BRIDGE_ALIGN 4096
 100 #define PCI_MEM_BRIDGE_ALIGN (1024*1024)
 101
 102 static inline const struct pci_operations *ops_pci(device_t dev)
 103 {
 104         const struct pci_operations *pops;
 105         pops = 0;
 106         if (dev && dev->ops)
 107                 pops = dev->ops->ops_pci;
 108         return pops;
 109 }
 110
 111 #endif /* ! __SIMPLE_DEVICE__ */
 112
 113 #ifdef __SIMPLE_DEVICE__
 114 unsigned int pci_find_next_capability(pci_devfn_t dev, unsigned int cap,
 115         unsigned int last);
 116 unsigned int pci_find_capability(pci_devfn_t dev, unsigned int cap);
 117 #else /* !__SIMPLE_DEVICE__ */
 118 unsigned int pci_find_next_capability(device_t dev, unsigned int cap,
 119         unsigned int last);
 120 unsigned int pci_find_capability(device_t dev, unsigned int cap);
 121 #endif /* __SIMPLE_DEVICE__ */
 122
 123 void pci_early_bridge_init(void);
 124 int pci_early_device_probe(u8 bus, u8 dev, u32 mmio_base);
 125
 126 #ifndef __ROMCC__
 127 static inline int pci_base_address_is_memory_space(unsigned int attr)
 128 {
 129         return (attr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_MEMORY;
 130 }
 131 #endif
 132
 133 #endif /* CONFIG_PCI */
 134
 135 #endif /* PCI_H */