[virtio] Remove dependency on nic for virtio PCI functions

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>

src/drivers/net/virtio-net.c

  *
  */
 
-static int vp_find_vq(struct nic *nic, int queue_index)
+static int vp_find_vq(unsigned int ioaddr, int queue_index)
 {
    struct vring * vr = &vring[queue_index];
    u16 num;
 
    /* select the queue */
 
-   outw(queue_index, nic->ioaddr + VIRTIO_PCI_QUEUE_SEL);
+   outw(queue_index, ioaddr + VIRTIO_PCI_QUEUE_SEL);
 
    /* check if the queue is available */
 
-   num = inw(nic->ioaddr + VIRTIO_PCI_QUEUE_NUM);
+   num = inw(ioaddr + VIRTIO_PCI_QUEUE_NUM);
    if (!num) {
            printf("ERROR: queue size is 0\n");
            return -1;
 
    /* check if the queue is already active */
 
-   if (inl(nic->ioaddr + VIRTIO_PCI_QUEUE_PFN)) {
+   if (inl(ioaddr + VIRTIO_PCI_QUEUE_PFN)) {
            printf("ERROR: queue already active\n");
            return -1;
    }
     */
 
    outl((unsigned long)virt_to_phys(vr->desc) >> PAGE_SHIFT,
-        nic->ioaddr + VIRTIO_PCI_QUEUE_PFN);
+        ioaddr + VIRTIO_PCI_QUEUE_PFN);
 
    return num;
 }
 
    mb();
    if (!(vr->used->flags & VRING_USED_F_NO_NOTIFY))
-           vp_notify(nic, queue_index);
+           vp_notify(nic->ioaddr, queue_index);
 }
 
 /*
 
    for (i = 0; i < QUEUE_NB; i++) {
            vring_disable_cb(i);
-           vp_del_vq(nic, i);
+           vp_del_vq(nic->ioaddr, i);
    }
-   vp_reset(nic);
+   vp_reset(nic->ioaddr);
 }
 
 /*
 
    adjust_pci_device(pci);
 
-   vp_reset(nic);
+   vp_reset(nic->ioaddr);
 
-   features = vp_get_features(nic);
+   features = vp_get_features(nic->ioaddr);
    if (features & (1 << VIRTIO_NET_F_MAC)) {
-           vp_get(nic, offsetof(struct virtio_net_config, mac),
+           vp_get(nic->ioaddr, offsetof(struct virtio_net_config, mac),
                   nic->node_addr, ETH_ALEN);
            printf("MAC address ");
 	   for (i = 0; i < ETH_ALEN; i++) {
            free_head[i] = 0;
            last_used_idx[i] = 0;
            memset((char*)&queue[i], 0, sizeof(queue[i]));
-           if (vp_find_vq(nic, i) == -1)
+           if (vp_find_vq(nic->ioaddr, i) == -1)
                    printf("Cannot register queue #%d\n", i);
    }
 
 
    /* driver is ready */
 
-   vp_set_features(nic, features & (1 << VIRTIO_NET_F_MAC));
-   vp_set_status(nic, VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK);
+   vp_set_features(nic->ioaddr, features & (1 << VIRTIO_NET_F_MAC));
+   vp_set_status(nic->ioaddr, VIRTIO_CONFIG_S_DRIVER | VIRTIO_CONFIG_S_DRIVER_OK);
 
    return 1;
 }

src/include/gpxe/virtio-pci.h

 /* Virtio ABI version, this must match exactly */
 #define VIRTIO_PCI_ABI_VERSION          0
 
-static inline u32 vp_get_features(struct nic *nic)
+static inline u32 vp_get_features(unsigned int ioaddr)
 {
-   return inl(nic->ioaddr + VIRTIO_PCI_HOST_FEATURES);
+   return inl(ioaddr + VIRTIO_PCI_HOST_FEATURES);
 }
 
-static inline void vp_set_features(struct nic *nic, u32 features)
+static inline void vp_set_features(unsigned int ioaddr, u32 features)
 {
-        outl(features, nic->ioaddr + VIRTIO_PCI_GUEST_FEATURES);
+        outl(features, ioaddr + VIRTIO_PCI_GUEST_FEATURES);
 }
 
-static inline void vp_get(struct nic *nic, unsigned offset,
+static inline void vp_get(unsigned int ioaddr, unsigned offset,
                      void *buf, unsigned len)
 {
    u8 *ptr = buf;
    unsigned i;
 
    for (i = 0; i < len; i++)
-           ptr[i] = inb(nic->ioaddr + VIRTIO_PCI_CONFIG + offset + i);
+           ptr[i] = inb(ioaddr + VIRTIO_PCI_CONFIG + offset + i);
 }
 
-static inline u8 vp_get_status(struct nic *nic)
+static inline u8 vp_get_status(unsigned int ioaddr)
 {
-   return inb(nic->ioaddr + VIRTIO_PCI_STATUS);
+   return inb(ioaddr + VIRTIO_PCI_STATUS);
 }
 
-static inline void vp_set_status(struct nic *nic, u8 status)
+static inline void vp_set_status(unsigned int ioaddr, u8 status)
 {
    if (status == 0)        /* reset */
            return;
-        outb(status, nic->ioaddr + VIRTIO_PCI_STATUS);
+   outb(status, ioaddr + VIRTIO_PCI_STATUS);
 }
 
 
-static inline void vp_reset(struct nic *nic)
+static inline void vp_reset(unsigned int ioaddr)
 {
-   outb(0, nic->ioaddr + VIRTIO_PCI_STATUS);
-   (void)inb(nic->ioaddr + VIRTIO_PCI_ISR);
+   outb(0, ioaddr + VIRTIO_PCI_STATUS);
+   (void)inb(ioaddr + VIRTIO_PCI_ISR);
 }
 
-static inline void vp_notify(struct nic *nic, int queue_index)
+static inline void vp_notify(unsigned int ioaddr, int queue_index)
 {
-   outw(queue_index, nic->ioaddr + VIRTIO_PCI_QUEUE_NOTIFY);
+   outw(queue_index, ioaddr + VIRTIO_PCI_QUEUE_NOTIFY);
 }
 
-static inline void vp_del_vq(struct nic *nic, int queue_index)
+static inline void vp_del_vq(unsigned int ioaddr, int queue_index)
 {
    /* select the queue */
 
-   outw(queue_index, nic->ioaddr + VIRTIO_PCI_QUEUE_SEL);
+   outw(queue_index, ioaddr + VIRTIO_PCI_QUEUE_SEL);
 
    /* deactivate the queue */
 
-   outl(0, nic->ioaddr + VIRTIO_PCI_QUEUE_PFN);
+   outl(0, ioaddr + VIRTIO_PCI_QUEUE_PFN);
 }
 #endif /* _VIRTIO_PCI_H_ */