Ported user space support for host devices, user space host device example, and vnc...

[palacios.git] / linux_usr / v3_user_host_dev.c

diff --git a/linux_usr/v3_user_host_dev.c b/linux_usr/v3_user_host_dev.c
new file mode 100644 (file)
index 0000000..8fe121a
--- /dev/null
+++ b/linux_usr/v3_user_host_dev.c
@@ -0,0 +1,123 @@
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <malloc.h>
+
+#include "v3_user_host_dev.h"
+
+
+int v3_user_host_dev_rendezvous(char *vmdev, char *url)
+{
+    int vmfd;
+    int devfd;
+
+    if ((vmfd=open(vmdev,O_RDWR))<0) { 
+       return -1;
+    }
+
+    devfd = ioctl(vmfd,V3_VM_HOST_DEV_CONNECT,url);
+    
+    close(vmfd);
+
+    return devfd;
+
+}
+int v3_user_host_dev_depart(int devfd)
+{
+    return close(devfd);
+}
+
+
+int v3_user_host_dev_have_request(int devfd)
+{
+    uint64_t len;
+
+    return ioctl(devfd,V3_HOST_DEV_HOST_REQUEST_SIZE_IOCTL,&len)==1;
+}
+
+int v3_user_host_dev_pull_request(int devfd, struct palacios_host_dev_host_request_response **req)
+{
+    uint64_t len;
+    int rc;
+
+    rc=ioctl(devfd,V3_HOST_DEV_HOST_REQUEST_SIZE_IOCTL,&len);
+
+    if (rc<=0) { 
+       return -1;
+    } else {
+       struct palacios_host_dev_host_request_response *r = malloc(len);
+       
+       rc=ioctl(devfd, V3_HOST_DEV_HOST_REQUEST_PULL_IOCTL,r);
+       
+       if (rc<=0) { 
+           free(r);
+           return -1;
+       } else {
+           *req=r;
+           return 0;
+       }
+    }
+}
+               
+
+int v3_user_host_dev_push_response(int devfd, struct palacios_host_dev_host_request_response *resp)
+{
+    int rc;
+
+    rc=ioctl(devfd, V3_HOST_DEV_USER_RESPONSE_PUSH_IOCTL,resp);
+       
+    if (rc<=0) { 
+       return -1;
+    } else {
+       return 0;
+    }
+}
+               
+
+
+static uint64_t do_user(int devfd, struct palacios_host_dev_user_op *op)
+{
+    return ioctl(devfd, V3_HOST_DEV_USER_REQUEST_PUSH_IOCTL,op);
+}
+
+uint64_t v3_user_host_dev_read_guest_mem(int devfd, void *gpa, void *dest, uint64_t len)
+{
+    struct palacios_host_dev_user_op op;
+
+    op.type= PALACIOS_HOST_DEV_USER_REQUEST_READ_GUEST;
+    op.gpa=gpa;
+    op.data=dest;
+    op.len=len;
+    op.irq=0;
+    
+    return do_user(devfd,&op);
+}
+
+uint64_t v3_user_host_dev_write_guest_mem(int devfd, void *gpa, void *src, uint64_t len)
+{
+    struct palacios_host_dev_user_op op;
+
+    op.type= PALACIOS_HOST_DEV_USER_REQUEST_WRITE_GUEST;
+    op.gpa=gpa;
+    op.data=src;
+    op.len=len;
+    op.irq=0;
+    
+    return do_user(devfd,&op);
+}
+
+int      v3_user_host_dev_inject_irq(int devfd, uint8_t irq)
+{
+    struct palacios_host_dev_user_op op;
+
+    op.type= PALACIOS_HOST_DEV_USER_REQUEST_IRQ_GUEST;
+    op.gpa=0;
+    op.data=0;
+    op.len=0;
+    op.irq=irq;
+    
+    return do_user(devfd,&op);
+}
+
+
+