From 5899fd82aa2f5c3855eb6630f702f3239b6b7015 Mon Sep 17 00:00:00 2001 From: Eric Biederman Date: Thu, 24 Apr 2003 06:25:08 +0000 Subject: - Small step forward Linux boots and almost works... git-svn-id: svn://svn.coreboot.org/coreboot/trunk@795 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/include/device/device.h | 91 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 src/include/device/device.h (limited to 'src/include/device/device.h') diff --git a/src/include/device/device.h b/src/include/device/device.h new file mode 100644 index 0000000000..e8bcfe512f --- /dev/null +++ b/src/include/device/device.h @@ -0,0 +1,91 @@ +#ifndef DEVICE_H +#define DEVICE_H + +#include + +struct device; +struct device_operations { + void (*read_resources)(struct device *dev); + void (*set_resources)(struct device *dev); + void (*init)(struct device *dev); + unsigned int (*scan_bus)(struct device *bus, unsigned int max); +}; + + +#define MAX_RESOURCES 6 +/* + * There is one pci_dev structure for each slot-number/function-number + * combination: + */ + +struct device { + struct device *bus; /* bus this device is on */ + struct device *children; /* devices behind this bridge */ + struct device *sibling; /* next device on this bus */ + struct device *next; /* chain of all devices */ + + unsigned int devfn; /* encoded device & function index */ + unsigned short vendor; + unsigned short device; + unsigned int class; /* 3 bytes: (base,sub,prog-if) */ + unsigned int hdr_type; /* PCI header type */ + unsigned int master : 1; /* set if device is master capable */ + + unsigned char secondary; /* secondary bus number */ + unsigned char subordinate; /* max subordinate bus number */ + uint8_t command; + /* + * In theory, the irq level can be read from configuration + * space and all would be fine. However, old PCI chips don't + * support these registers and return 0 instead. For example, + * the Vision864-P rev 0 chip can uses INTA, but returns 0 in + * the interrupt line and pin registers. pci_init() + * initializes this field with the value at PCI_INTERRUPT_LINE + * and it is the job of pcibios_fixup() to change it if + * necessary. The field must not be 0 unless the device + * cannot generate interrupts at all. + */ + unsigned int irq; /* irq generated by this device */ + + /* Base registers for this device, can be adjusted by + * pcibios_fixup() as necessary. + */ + struct resource resource[MAX_RESOURCES]; + unsigned int resources; + unsigned long rom_address; + struct device_operations *ops; + +}; + +extern struct device dev_root; /* root bus */ +extern struct device *all_devices; /* list of all devices */ + + +/* Generic device interface functions */ +extern void dev_enumerate(void); +extern void dev_configure(void); +extern void dev_enable(void); +extern void dev_initialize(void); + +/* Generic device helper functions */ +void append_device(struct device *dev); +void compute_allocate_resource(struct device *bus, struct resource *bridge, + unsigned long type_mask, unsigned long type); +void assign_resources(struct device *bus); +void enumerate_static_device(void); +unsigned long device_memory_base; + + +/* Helper functions */ +struct device *dev_find_device (unsigned int vendor, unsigned int device, struct device *from); +struct device *dev_find_class (unsigned int class, struct device *from); +struct device *dev_find_slot (unsigned int bus, unsigned int devfn); + +/* Rounding for boundaries. + * Due to some chip bugs, go ahead and roung IO to 16 + */ +#define DEVICE_IO_ALIGN 16 +#define DEVICE_MEM_ALIGN 4096 + + +#endif /* DEVICE_H */ -- cgit v1.2.3