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XDMA驱动源码官网下载地址为#xff1a;https://github.com/Xilinx/dma_ip_drivers 下载最新版本的XDMA驱动源码#xff0c;即master版本#xff0c;否则其驱动用不了#xff08;xdma ip核版本为4.1#xff09;。
2、驱动
此部分来源于博客#xff1a;xd…1、驱动链接
XDMA驱动源码官网下载地址为https://github.com/Xilinx/dma_ip_drivers 下载最新版本的XDMA驱动源码即master版本否则其驱动用不了xdma ip核版本为4.1。
2、驱动
此部分来源于博客xdma驱动编译给arm使用
2.1、修改驱动的Makefile
修改dma_ip_drivers-master/XDMA/linux-kernel/xdma/Makefile
# ifneq ($(KERNELRELEASE),)
# $(TARGET_MODULE)-objs : libxdma.o xdma_cdev.o cdev_ctrl.o cdev_events.o cdev_sgdma.o cdev_xvc.o cdev_bypass.o xdma_mod.o xdma_thread.o
# obj-m : $(TARGET_MODULE).o
# else
# BUILDSYSTEM_DIR:/lib/modules/$(shell uname -r)/build
# PWD:$(shell pwd)找到上面的并注释掉最后一行还有一个 endif 也注释掉紧挨着就添加下面的$(TARGET_MODULE)-objs : libxdma.o xdma_cdev.o cdev_ctrl.o cdev_events.o cdev_sgdma.o cdev_xvc.o cdev_bypass.o xdma_mod.o xdma_thread.o
obj-m : $(TARGET_MODULE).o
BUILDSYSTEM_DIR:/home/debian/Desktop/xiaguangbo/project/rk3588/project/kernel # linux 源码目录
PWD:$(shell pwd)2.2、编译
export ARCHarm64 CROSS_COMPILEaarch64-linux-gnu-
make3、测试工具
3.1、修改测试工具Makefile
修改 dma_ip_drivers-master/XDMA/linux-kernel/tools/Makefile
# CC ? gcc
CC aarch64-linux-gnu-gcc3.2、编译
make编译之后用file xxx查看文件是否是属于aarch64架构的如果不是查看Makefile对不对
4、xdma中断检测上位机
4.1、代码
#include assert.h
#include fcntl.h
#include getopt.h
#include stdint.h
#include stdio.h
#include stdlib.h
#include string.h
#include unistd.h
#include time.h
#include pthread.h
#include semaphore.h
#include stdarg.h
#include syslog.h
#include sys/mman.h
#include sys/stat.h
#include sys/time.h
#include sys/types.h
#include sys/sysinfo.h
#include unistd.h
#include dirent.h
#include string.h
/* ltoh: little to host */
/* htol: big to host */
#if __BYTE_ORDER __LITTLE_ENDIAN
# define ltohl(x) (x)
# define ltohs(x) (x)
# define htoll(x) (x)
# define htols(x) (x)
#elif __BYTE_ORDER __BIG_ENDIAN
# define ltohl(x) __bswap_32(x)
# define ltohs(x) __bswap_16(x)
# define htoll(x) __bswap_32(x)
# define htols(x) __bswap_16(x)
#endif
#define MAP_SIZE (1024*1024UL)
#define MAP_MASK (MAP_SIZE - 1)static void * user_base;
static int start_en;
unsigned int user_irq_ack;static void *mmap_control(int fd,long mapsize)
{void *vir_addr;vir_addr mmap(0, mapsize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);return vir_addr;
}static void user_write(unsigned int address,unsigned int val)
{unsigned int writeval htoll(val);*((unsigned int *)(user_baseaddress)) writeval;
}static unsigned int user_read(unsigned int address)
{unsigned int read_result *((unsigned int *)(user_baseaddress));read_result ltohl(read_result);return read_result;
}void *event0_process()
{int val;int h_event0;h_event0 open(/dev/xdma0_events_0, O_RDWR | O_SYNC);if(h_event0 0) { printf(open event0 error\n);}else{printf(open event0\n);while (1){if (start_en) {read(h_event0,val,4);if (val 1)printf(event_0 done!\n);elseprintf(event_0 timeout!\n);}usleep(1);}close(h_event0);}
}void *event1_process()
{int val;int h_event1;h_event1 open(/dev/xdma0_events_1, O_RDWR | O_SYNC);if(h_event1 0) { printf(open event1 error\n);}else{printf(open event1\n);while (1){if (start_en) {read(h_event1,val,4);if (val 1)printf(event_1 done!\n);elseprintf(event_1 timeout!\n);}usleep(1);}close(h_event1);}
}void *event2_process()
{int val;int h_event2;h_event2 open(/dev/xdma0_events_2, O_RDWR | O_SYNC);if(h_event2 0) { printf(open event2 error\n);}else{printf(open event2\n);while (1){if (start_en) {read(h_event2,val,4);if (val 1)printf(event_2 done!\n);elseprintf(event_2 timeout!\n);}usleep(1);}close(h_event2);}
}void *event3_process()
{int val;int h_event3;h_event3 open(/dev/xdma0_events_3, O_RDWR | O_SYNC);if(h_event3 0) { printf(open event3 error\n);}else{printf(open event3\n);while (1){if (start_en) {read(h_event3,val,4);if (val 1)printf(event_3 done!\n);elseprintf(event_3 timeout!\n);}usleep(1);}close(h_event3);}
}int main(int argc, char* argv[])
{static int h_c2h0;static int h_h2c0;static int h_user;pthread_t t_event0; pthread_t t_event1;pthread_t t_event2;pthread_t t_event3;char* user_name /dev/xdma0_user;char* c2h0_name /dev/xdma0_c2h_0;char* h2c0_name /dev/xdma0_h2c_0;start_en 0;h_c2h0 open(c2h0_name,O_RDWR | O_NONBLOCK);if(h_c2h0 0) { printf(open c2h0 error\n); };h_h2c0 open(h2c0_name,O_RDWR);if(h_h2c0 0) { printf(open h2c0 error\n); };h_user open(user_name, O_RDWR | O_SYNC);if(h_user 0) { printf(open user error\n); };user_base mmap_control(h_user,MAP_SIZE);user_write(0x00000, 0xf);pthread_create(t_event0, NULL, event0_process, NULL);pthread_create(t_event1, NULL, event1_process, NULL);pthread_create(t_event2, NULL, event2_process, NULL);pthread_create(t_event3, NULL, event3_process, NULL);usleep(100);user_irq_ack 0xffff0000;user_write(0x00004, user_irq_ack);//start irqstart_en 1;printf(start\n);pthread_join(t_event0,NULL);pthread_join(t_event1,NULL);pthread_join(t_event2,NULL);pthread_join(t_event3,NULL);user_irq_ack 0x00000000;user_write(0x00004, user_irq_ack);//stop irqclose(h_c2h0);close(h_h2c0);close(h_user);close(t_event0);close(t_event1);close(t_event2);close(t_event3);}
4.2编译中断测试程序
aarch64-linux-gnu-gcc pcie_irq.c -o pcie_irq -static -lpthread
