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#define _PCILIB_PCI_C
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <errno.h>
#include "driver/pciDriver.h"
#include "kernel.h"
#include "tools.h"
#include "pci.h"
#include "ipecamera.h"
static pci_board_info board_info;
static page_mask = -1;
static void pcilib_print_error(const char *msg, ...) {
va_list va;
va_start(va, msg);
vprintf(msg, va);
va_end(va);
}
static void (*Error)(const char *msg, ...) = pcilib_print_error;
int pcilib_open(const char *device) {
int handle = open(device, O_RDWR);
return handle;
}
void pcilib_close(int handle) {
close(handle);
}
int pcilib_set_error_handler(void (*err)(const char *msg, ...)) {
Error = err;
}
const pci_board_info *pcilib_get_board_info(int handle) {
int ret;
if (page_mask < 0) {
ret = ioctl( handle, PCIDRIVER_IOC_PCI_INFO, &board_info );
if (ret) Error("PCIDRIVER_IOC_PCI_INFO ioctl have failed");
page_mask = get_page_mask();
}
return &board_info;
}
pcilib_model_t pcilib_detect_model(int handle) {
unsigned short vendor_id;
unsigned short device_id;
pcilib_get_board_info(handle);
if ((board_info.vendor_id == PCIE_XILINX_VENDOR_ID)&&(board_info.device_id == PCIE_IPECAMERA_DEVICE_ID)) return PCILIB_MODEL_IPECAMERA;
return PCILIB_MODEL_PCI;
}
static int pcilib_detect_bar(int handle, unsigned long addr, int size) {
int ret,i;
pcilib_get_board_info(handle);
for (i = 0; i < PCILIB_MAX_BANKS; i++) {
if ((addr >= board_info.bar_start[i])&&((board_info.bar_start[i] + board_info.bar_length[i]) >= (addr + size))) return i;
}
return -1;
}
static void *pcilib_detect_address(int handle, int *bar, unsigned long *addr, int size) {
if (*bar < 0) {
*bar = pcilib_detect_bar(handle, *addr, size);
if (*bar < 0) Error("The requested data block at address 0x%x with size 0x%x does not belongs to any available memory bank", *addr, size);
} else {
pcilib_get_board_info(handle);
if ((*addr < board_info.bar_start[*bar])||((board_info.bar_start[*bar] + board_info.bar_length[*bar]) < (((uintptr_t)*addr) + size))) {
if ((board_info.bar_length[*bar]) >= (((uintptr_t)*addr) + size))
*addr += board_info.bar_start[*bar];
else
Error("The requested data block at address 0x%x with size 0x%x does not belong the specified memory bank (Bar %i: starting at 0x%x with size 0x%x)", *addr, size, *bar, board_info.bar_start[*bar], board_info.bar_length[*bar]);
}
}
*addr -= board_info.bar_start[*bar];
*addr += board_info.bar_start[*bar] & page_mask;
}
#ifdef FILE_IO
int file_io_handle;
#endif /* FILE_IO */
void *pcilib_map_bar(int handle, int bar) {
void *res;
int ret;
pcilib_get_board_info(handle);
ret = ioctl( handle, PCIDRIVER_IOC_MMAP_MODE, PCIDRIVER_MMAP_PCI );
if (ret) Error("PCIDRIVER_IOC_MMAP_MODE ioctl have failed", bar);
ret = ioctl( handle, PCIDRIVER_IOC_MMAP_AREA, PCIDRIVER_BAR0 + bar );
if (ret) Error("PCIDRIVER_IOC_MMAP_AREA ioctl have failed for bank %i", bar);
#ifdef FILE_IO
file_io_handle = open("/root/drivers/pciDriver/data", O_RDWR);
res = mmap( 0, board_info.bar_length[bar], PROT_WRITE | PROT_READ, MAP_SHARED, file_io_handle, 0 );
#else
res = mmap( 0, board_info.bar_length[bar], PROT_WRITE | PROT_READ, MAP_SHARED, handle, 0 );
#endif
if ((!res)||(res == MAP_FAILED)) Error("Failed to mmap data bank %i", bar);
return res;
}
void pcilib_unmap_bar(int handle, int bar, void *data) {
munmap(data, board_info.bar_length[bar]);
#ifdef FILE_IO
close(file_io_handle);
#endif
}
int pcilib_read(void *buf, int handle, int bar, unsigned long addr, int size) {
int i;
void *data;
unsigned int offset;
char local_buf[size];
pcilib_detect_address(handle, &bar, &addr, size);
data = pcilib_map_bar(handle, bar);
/*
for (i = 0; i < size/4; i++) {
((uint32_t*)((char*)data+addr))[i] = 0x100 * i + 1;
}
*/
pcilib_memcpy(buf, data + addr, size);
pcilib_unmap_bar(handle, bar, data);
}
int pcilib_write(void *buf, int handle, int bar, unsigned long addr, int size) {
int i;
void *data;
unsigned int offset;
char local_buf[size];
pcilib_detect_address(handle, &bar, &addr, size);
data = pcilib_map_bar(handle, bar);
pcilib_memcpy(data + addr, buf, size);
pcilib_unmap_bar(handle, bar, data);
}
int pcilib_find_register(pcilib_model_t model, const char *reg) {
int i;
pcilib_register_t *registers = pcilib_model_description[model].registers;
for (i = 0; registers[i].size; i++) {
if (!strcasecmp(registers[i].name, reg)) return i;
}
return -1;
};
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