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#ifndef _PCILIB_BANK_H
#define _PCILIB_BANK_H
#include <pcilib.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#define PCILIB_REGISTER_BANK_INVALID ((pcilib_register_bank_t)-1)
#define PCILIB_REGISTER_BANK0 0 /**< First BANK to be used in the event engine */
#define PCILIB_REGISTER_BANK1 1
#define PCILIB_REGISTER_BANK2 2
#define PCILIB_REGISTER_BANK3 3
#define PCILIB_REGISTER_BANK_DMA 64 /**< First BANK address to be used by DMA engines */
#define PCILIB_REGISTER_BANK_DYNAMIC 128 /**< First BANK address to map dynamic XML configuration */
#define PCILIB_REGISTER_PROTOCOL_INVALID ((pcilib_register_protocol_t)-1)
#define PCILIB_REGISTER_PROTOCOL0 0 /**< First PROTOCOL address to be used in the event engine */
#define PCILIB_REGISTER_PROTOCOL_DEFAULT 64 /**< Default memmap based protocol */
#define PCILIB_REGISTER_PROTOCOL_DMA 96 /**< First PROTOCOL address to be used by DMA engines */
#define PCILIB_REGISTER_PROTOCOL_DYNAMIC 128 /**< First PROTOCOL address to be used by plugins */
#define PCILIB_REGISTER_PROTOCOL_SOFTWARE_REGISTERS 32
typedef uint8_t pcilib_register_bank_t; /**< Type holding the bank position within the field listing register banks in the model */
typedef uint8_t pcilib_register_bank_addr_t; /**< Type holding the bank address number */
typedef uint8_t pcilib_register_protocol_t; /**< Type holding the protocol position within the field listing register protocols in the model */
typedef uint8_t pcilib_register_protocol_addr_t; /**< Type holding the protocol address */
typedef struct pcilib_register_bank_context_s pcilib_register_bank_context_t;
typedef struct {
pcilib_version_t version;
pcilib_register_bank_context_t *(*init)(pcilib_t *ctx, pcilib_register_bank_t bank, const char *model, const void *args); /**< Optional API call to initialize bank context */
void (*free)(pcilib_register_bank_context_t *bank_ctx); /**< Optional API call to cleanup bank context */
int (*read)(pcilib_t *pcilib, pcilib_register_bank_context_t *ctx, pcilib_register_addr_t addr, pcilib_register_value_t *value); /**< Read from register, mandatory for RO/RW registers */
int (*write)(pcilib_t *pcilib, pcilib_register_bank_context_t *ctx, pcilib_register_addr_t addr, pcilib_register_value_t value); /**< Write to register, mandatory for WO/RW registers */
} pcilib_register_protocol_api_description_t;
typedef struct {
pcilib_register_protocol_addr_t addr; /**< Protocol address used in model for addressing the described protocol */
const pcilib_register_protocol_api_description_t *api; /**< Defines all API functions for protocol */
const char *model; /**< If NULL, the actually used model is used instead */
const void *args; /**< Custom protocol-specific arguments. The actual structure may depend on the specified model */
const char *name; /**< Short protocol name */
const char *description; /**< A bit longer protocol description */
} pcilib_register_protocol_description_t;
typedef struct {
pcilib_register_bank_addr_t addr; /**< Bank address used in model for addressing the described register bank */
pcilib_register_protocol_addr_t protocol; /**< Defines a protocol to access registers */
pcilib_bar_t bar; /**< Specifies the PCI BAR through which an access to the registers is provided (autodetcted if PCILIB_BAR_DETECT is specified) */
uintptr_t read_addr; /**< protocol specific (normally offset in the BAR of the first address used to read registers) */
uintptr_t write_addr; /**< protocol specific (normally offset in the BAR of the first address used to write registers) */
uint8_t access; /**< Default register size in bits (or word-size in plain addressing mode) */
size_t size; /**< Number of register addresses (plain addressing) in the bank (more register names can be defined if bit-fields/views are used) */
pcilib_endianess_t raw_endianess; /**< Specifies endianess in the plain-addressing mode, PCILIB_HOST_ENDIAN have to be specified if no conversion desired.
Conversion applied after protocol. This value does not get into the account in register-access mode */
pcilib_endianess_t endianess; /**< Specifies endianess in the register-access mode, this may differ from raw_endianess if multi-word registers are used.
This is fully independent from raw_endianess. No double conversion is either performed */
const char *format; /**< printf format for the registers, either %lu for decimal output or 0x%lx for hexdecimal */
const char *name; /**< short bank name */
const char *description; /**< longer bank description */
xmlNodePtr xmlNode; /**<pointer to xmlNode of the bank in the file*/
} pcilib_register_bank_description_t;
/**
* Default mappings: defines virtual address to register mappings, i.e. how 0x9000 in the following command
* will be mapped to the actual register. By comparing with start and end-addresses, we find to which range
* 0x9000 belongs to and detect actual bank and offset in it.
* Simple example: pci -r 0x9000
* if we specify range { 0x9000, 0x9100, 10, -0x9000}, the example command we print the value of the first
* register in the bank 10.
*/
typedef struct {
uintptr_t start; /**< The first virtual address of the register range */
uintptr_t end; /**< The last virtual address of the register range */
pcilib_register_bank_addr_t bank; /**< The bank mapped to the specified range */
long addr_shift; /**< Address shift, i.e. how much we should add/substract to the virtual address to get address in the register bank */
} pcilib_register_range_t;
struct pcilib_register_bank_context_s {
const pcilib_register_bank_description_t *bank; /**< Corresponding bank description */
const pcilib_register_protocol_api_description_t *api; /**< API functions */
xmlNodeSetPtr banks_nodes;
void *kmem_base_address;
pcilib_t *ctx;
};
// we don't copy strings, they should be statically allocated
int pcilib_init_register_banks(pcilib_t *ctx);
void pcilib_free_register_banks(pcilib_t *ctx);
int pcilib_add_register_banks(pcilib_t *ctx, size_t n, const pcilib_register_bank_description_t *banks);
int pcilib_add_register_protocols(pcilib_t *ctx, size_t n, const pcilib_register_protocol_description_t *protocols);
int pcilib_add_register_ranges(pcilib_t *ctx, size_t n, const pcilib_register_range_t *ranges);
pcilib_register_bank_t pcilib_find_register_bank_by_addr(pcilib_t *ctx, pcilib_register_bank_addr_t bank);
pcilib_register_bank_t pcilib_find_register_bank_by_name(pcilib_t *ctx, const char *bankname);
pcilib_register_bank_t pcilib_find_register_bank(pcilib_t *ctx, const char *bank);
pcilib_register_protocol_t pcilib_find_register_protocol_by_addr(pcilib_t *ctx, pcilib_register_protocol_addr_t protocol);
pcilib_register_protocol_t pcilib_find_register_protocol_by_name(pcilib_t *ctx, const char *name);
pcilib_register_protocol_t pcilib_find_register_protocol(pcilib_t *ctx, const char *name);
#endif /* _PCILIB_BANK_H */
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