mirror of https://gitee.com/openkylin/linux.git
cnic: Add cnic_uio_dev struct
and put all uio related structures and ring buffers in it. This allows uio operations to be done independent of the cnic device structures. Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan
David S. Miller
parent
c06c046225
commit
cd801536c2
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@ -89,22 +89,24 @@ static int cnic_cm_set_pg(struct cnic_sock *);
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static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
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{
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struct cnic_dev *dev = uinfo->priv;
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_uio_dev *udev = uinfo->priv;
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struct cnic_dev *dev;
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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if (cp->uio_dev != -1)
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if (udev->uio_dev != -1)
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return -EBUSY;
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rtnl_lock();
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dev = udev->dev;
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if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
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rtnl_unlock();
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return -ENODEV;
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}
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cp->uio_dev = iminor(inode);
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udev->uio_dev = iminor(inode);
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cnic_init_rings(dev);
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rtnl_unlock();
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@ -114,12 +116,12 @@ static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
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static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
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{
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struct cnic_dev *dev = uinfo->priv;
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_uio_dev *udev = uinfo->priv;
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struct cnic_dev *dev = udev->dev;
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cnic_shutdown_rings(dev);
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cp->uio_dev = -1;
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udev->uio_dev = -1;
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return 0;
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}
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@ -276,8 +278,9 @@ static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
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u16 len = 0;
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u32 msg_type = ISCSI_KEVENT_IF_DOWN;
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struct cnic_ulp_ops *ulp_ops;
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struct cnic_uio_dev *udev = cp->udev;
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if (cp->uio_dev == -1)
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if (!udev || udev->uio_dev == -1)
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return -ENODEV;
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if (csk) {
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@ -408,8 +411,7 @@ static void cnic_uio_stop(void)
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list_for_each_entry(dev, &cnic_dev_list, list) {
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struct cnic_local *cp = dev->cnic_priv;
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if (cp->cnic_uinfo)
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cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
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cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
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}
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read_unlock(&cnic_dev_lock);
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}
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@ -770,48 +772,44 @@ static void cnic_free_context(struct cnic_dev *dev)
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}
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}
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static void __cnic_free_uio(struct cnic_dev *dev)
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static void __cnic_free_uio(struct cnic_uio_dev *udev)
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{
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struct cnic_local *cp = dev->cnic_priv;
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uio_unregister_device(&udev->cnic_uinfo);
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if (cp->cnic_uinfo)
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uio_unregister_device(cp->cnic_uinfo);
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kfree(cp->cnic_uinfo);
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cp->cnic_uinfo = NULL;
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if (cp->l2_buf) {
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dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
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cp->l2_buf, cp->l2_buf_map);
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cp->l2_buf = NULL;
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if (udev->l2_buf) {
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dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
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udev->l2_buf, udev->l2_buf_map);
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udev->l2_buf = NULL;
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}
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if (cp->l2_ring) {
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dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
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cp->l2_ring, cp->l2_ring_map);
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cp->l2_ring = NULL;
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if (udev->l2_ring) {
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dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
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udev->l2_ring, udev->l2_ring_map);
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udev->l2_ring = NULL;
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}
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}
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static void cnic_free_uio(struct cnic_dev *dev)
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static void cnic_free_uio(struct cnic_uio_dev *udev)
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{
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if (!dev)
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if (!udev)
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return;
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__cnic_free_uio(dev);
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__cnic_free_uio(udev);
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}
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static void cnic_free_resc(struct cnic_dev *dev)
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{
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_uio_dev *udev = cp->udev;
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int i = 0;
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if (cp->cnic_uinfo) {
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while (cp->uio_dev != -1 && i < 15) {
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if (udev) {
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while (udev->uio_dev != -1 && i < 15) {
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msleep(100);
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i++;
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}
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cnic_free_uio(dev);
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cnic_free_uio(udev);
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cp->udev = NULL;
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}
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cnic_free_context(dev);
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@ -913,37 +911,53 @@ static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
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return 0;
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}
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static int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
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static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
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{
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_uio_dev *udev;
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cp->l2_ring_size = pages * BCM_PAGE_SIZE;
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cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
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&cp->l2_ring_map,
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GFP_KERNEL | __GFP_COMP);
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if (!cp->l2_ring)
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udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
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if (!udev)
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return -ENOMEM;
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cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
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cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
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cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
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&cp->l2_buf_map,
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GFP_KERNEL | __GFP_COMP);
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if (!cp->l2_buf)
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udev->uio_dev = -1;
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udev->dev = dev;
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udev->pdev = dev->pcidev;
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udev->l2_ring_size = pages * BCM_PAGE_SIZE;
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udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
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&udev->l2_ring_map,
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GFP_KERNEL | __GFP_COMP);
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if (!udev->l2_ring)
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return -ENOMEM;
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udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
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udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
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udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
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&udev->l2_buf_map,
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GFP_KERNEL | __GFP_COMP);
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if (!udev->l2_buf)
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return -ENOMEM;
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cp->udev = udev;
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return 0;
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}
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static int cnic_alloc_uio(struct cnic_dev *dev) {
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static int cnic_init_uio(struct cnic_dev *dev)
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{
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_uio_dev *udev = cp->udev;
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struct uio_info *uinfo;
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int ret;
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int ret = 0;
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uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
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if (!uinfo)
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if (!udev)
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return -ENOMEM;
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udev->uio_dev = -1;
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uinfo = &udev->cnic_uinfo;
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uinfo->mem[0].addr = dev->netdev->base_addr;
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uinfo->mem[0].internal_addr = dev->regview;
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uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
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@ -951,7 +965,7 @@ static int cnic_alloc_uio(struct cnic_dev *dev) {
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if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
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uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
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PAGE_MASK;
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PAGE_MASK;
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if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
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uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
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else
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@ -968,12 +982,12 @@ static int cnic_alloc_uio(struct cnic_dev *dev) {
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uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
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uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
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uinfo->mem[2].size = cp->l2_ring_size;
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uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
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uinfo->mem[2].size = udev->l2_ring_size;
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uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
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uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
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uinfo->mem[3].size = cp->l2_buf_size;
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uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
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uinfo->mem[3].size = udev->l2_buf_size;
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uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
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uinfo->version = CNIC_MODULE_VERSION;
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@ -982,16 +996,11 @@ static int cnic_alloc_uio(struct cnic_dev *dev) {
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uinfo->open = cnic_uio_open;
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uinfo->release = cnic_uio_close;
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uinfo->priv = dev;
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uinfo->priv = udev;
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ret = uio_register_device(&dev->pcidev->dev, uinfo);
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if (ret) {
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kfree(uinfo);
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return ret;
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}
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ret = uio_register_device(&udev->pdev->dev, uinfo);
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cp->cnic_uinfo = uinfo;
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return 0;
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return ret;
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}
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static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
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@ -1012,11 +1021,11 @@ static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
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if (ret)
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goto error;
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ret = cnic_alloc_l2_rings(dev, 2);
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ret = cnic_alloc_uio_rings(dev, 2);
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if (ret)
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goto error;
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ret = cnic_alloc_uio(dev);
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ret = cnic_init_uio(dev);
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if (ret)
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goto error;
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@ -1150,11 +1159,11 @@ static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
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cp->l2_rx_ring_size = 15;
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ret = cnic_alloc_l2_rings(dev, 4);
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ret = cnic_alloc_uio_rings(dev, 4);
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if (ret)
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goto error;
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ret = cnic_alloc_uio(dev);
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ret = cnic_init_uio(dev);
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if (ret)
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goto error;
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@ -2226,8 +2235,9 @@ static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
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static int cnic_l2_completion(struct cnic_local *cp)
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{
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u16 hw_cons, sw_cons;
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struct cnic_uio_dev *udev = cp->udev;
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union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
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(cp->l2_ring + (2 * BCM_PAGE_SIZE));
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(udev->l2_ring + (2 * BCM_PAGE_SIZE));
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u32 cmd;
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int comp = 0;
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@ -2273,7 +2283,8 @@ static void cnic_chk_pkt_rings(struct cnic_local *cp)
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cp->tx_cons = tx_cons;
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cp->rx_cons = rx_cons;
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uio_event_notify(cp->cnic_uinfo);
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if (cp->udev)
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uio_event_notify(&cp->udev->cnic_uinfo);
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}
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if (comp)
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clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
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@ -2435,8 +2446,7 @@ static void cnic_ulp_stop(struct cnic_dev *dev)
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struct cnic_local *cp = dev->cnic_priv;
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int if_type;
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if (cp->cnic_uinfo)
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cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
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cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
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for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
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struct cnic_ulp_ops *ulp_ops;
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@ -3658,11 +3668,12 @@ static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
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{
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_eth_dev *ethdev = cp->ethdev;
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struct cnic_uio_dev *udev = cp->udev;
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u32 cid_addr, tx_cid, sb_id;
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u32 val, offset0, offset1, offset2, offset3;
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int i;
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struct tx_bd *txbd;
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dma_addr_t buf_map;
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dma_addr_t buf_map, ring_map = udev->l2_ring_map;
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struct status_block *s_blk = cp->status_blk.gen;
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sb_id = cp->status_blk_num;
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@ -3704,18 +3715,18 @@ static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
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val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
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cnic_ctx_wr(dev, cid_addr, offset1, val);
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txbd = (struct tx_bd *) cp->l2_ring;
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txbd = (struct tx_bd *) udev->l2_ring;
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buf_map = cp->l2_buf_map;
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buf_map = udev->l2_buf_map;
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for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
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txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
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txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
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}
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val = (u64) cp->l2_ring_map >> 32;
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val = (u64) ring_map >> 32;
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cnic_ctx_wr(dev, cid_addr, offset2, val);
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txbd->tx_bd_haddr_hi = val;
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val = (u64) cp->l2_ring_map & 0xffffffff;
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val = (u64) ring_map & 0xffffffff;
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cnic_ctx_wr(dev, cid_addr, offset3, val);
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txbd->tx_bd_haddr_lo = val;
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}
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@ -3724,10 +3735,12 @@ static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
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{
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struct cnic_local *cp = dev->cnic_priv;
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struct cnic_eth_dev *ethdev = cp->ethdev;
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struct cnic_uio_dev *udev = cp->udev;
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u32 cid_addr, sb_id, val, coal_reg, coal_val;
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int i;
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struct rx_bd *rxbd;
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struct status_block *s_blk = cp->status_blk.gen;
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dma_addr_t ring_map = udev->l2_ring_map;
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sb_id = cp->status_blk_num;
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cnic_init_context(dev, 2);
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@ -3761,22 +3774,22 @@ static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
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val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
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cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
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rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE);
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rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
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for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
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dma_addr_t buf_map;
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int n = (i % cp->l2_rx_ring_size) + 1;
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buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
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buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
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rxbd->rx_bd_len = cp->l2_single_buf_size;
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rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
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rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
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rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
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}
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val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
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val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
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cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
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rxbd->rx_bd_haddr_hi = val;
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val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
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val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
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cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
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rxbd->rx_bd_haddr_lo = val;
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@ -4038,8 +4051,9 @@ static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
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struct client_init_ramrod_data *data)
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{
|
||||
struct cnic_local *cp = dev->cnic_priv;
|
||||
union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
|
||||
dma_addr_t buf_map, ring_map = cp->l2_ring_map;
|
||||
struct cnic_uio_dev *udev = cp->udev;
|
||||
union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
|
||||
dma_addr_t buf_map, ring_map = udev->l2_ring_map;
|
||||
struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
|
||||
int port = CNIC_PORT(cp);
|
||||
int i;
|
||||
|
|
@ -4048,7 +4062,7 @@ static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
|
|||
|
||||
memset(txbd, 0, BCM_PAGE_SIZE);
|
||||
|
||||
buf_map = cp->l2_buf_map;
|
||||
buf_map = udev->l2_buf_map;
|
||||
for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
|
||||
struct eth_tx_start_bd *start_bd = &txbd->start_bd;
|
||||
struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);
|
||||
|
|
@ -4096,17 +4110,18 @@ static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
|
|||
struct client_init_ramrod_data *data)
|
||||
{
|
||||
struct cnic_local *cp = dev->cnic_priv;
|
||||
struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
|
||||
struct cnic_uio_dev *udev = cp->udev;
|
||||
struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
|
||||
BCM_PAGE_SIZE);
|
||||
struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
|
||||
(cp->l2_ring + (2 * BCM_PAGE_SIZE));
|
||||
(udev->l2_ring + (2 * BCM_PAGE_SIZE));
|
||||
struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
|
||||
int i;
|
||||
int port = CNIC_PORT(cp);
|
||||
int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
|
||||
int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
|
||||
u32 val;
|
||||
dma_addr_t ring_map = cp->l2_ring_map;
|
||||
dma_addr_t ring_map = udev->l2_ring_map;
|
||||
|
||||
/* General data */
|
||||
data->general.client_id = cli;
|
||||
|
|
@ -4119,7 +4134,7 @@ static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
|
|||
dma_addr_t buf_map;
|
||||
int n = (i % cp->l2_rx_ring_size) + 1;
|
||||
|
||||
buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size);
|
||||
buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
|
||||
rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
|
||||
rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
|
||||
}
|
||||
|
|
@ -4320,6 +4335,7 @@ static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
|
|||
static void cnic_init_rings(struct cnic_dev *dev)
|
||||
{
|
||||
struct cnic_local *cp = dev->cnic_priv;
|
||||
struct cnic_uio_dev *udev = cp->udev;
|
||||
|
||||
if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
|
||||
return;
|
||||
|
|
@ -4350,15 +4366,15 @@ static void cnic_init_rings(struct cnic_dev *dev)
|
|||
|
||||
set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
|
||||
|
||||
data = cp->l2_buf;
|
||||
data = udev->l2_buf;
|
||||
|
||||
memset(data, 0, sizeof(*data));
|
||||
|
||||
cnic_init_bnx2x_tx_ring(dev, data);
|
||||
cnic_init_bnx2x_rx_ring(dev, data);
|
||||
|
||||
l5_data.phy_address.lo = cp->l2_buf_map & 0xffffffff;
|
||||
l5_data.phy_address.hi = (u64) cp->l2_buf_map >> 32;
|
||||
l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
|
||||
l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
|
||||
|
||||
type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
|
||||
& SPE_HDR_CONN_TYPE;
|
||||
|
|
@ -4539,7 +4555,7 @@ static void cnic_stop_hw(struct cnic_dev *dev)
|
|||
/* Need to wait for the ring shutdown event to complete
|
||||
* before clearing the CNIC_UP flag.
|
||||
*/
|
||||
while (cp->uio_dev != -1 && i < 15) {
|
||||
while (cp->udev->uio_dev != -1 && i < 15) {
|
||||
msleep(100);
|
||||
i++;
|
||||
}
|
||||
|
|
@ -4591,7 +4607,6 @@ static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
|
|||
|
||||
cp = cdev->cnic_priv;
|
||||
cp->dev = cdev;
|
||||
cp->uio_dev = -1;
|
||||
cp->l2_single_buf_size = 0x400;
|
||||
cp->l2_rx_ring_size = 3;
|
||||
|
||||
|
|
|
|||
|
|
@ -195,6 +195,23 @@ struct iro {
|
|||
u16 size;
|
||||
};
|
||||
|
||||
struct cnic_uio_dev {
|
||||
struct uio_info cnic_uinfo;
|
||||
u32 uio_dev;
|
||||
|
||||
int l2_ring_size;
|
||||
void *l2_ring;
|
||||
dma_addr_t l2_ring_map;
|
||||
|
||||
int l2_buf_size;
|
||||
void *l2_buf;
|
||||
dma_addr_t l2_buf_map;
|
||||
|
||||
struct cnic_dev *dev;
|
||||
struct pci_dev *pdev;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
struct cnic_local {
|
||||
|
||||
spinlock_t cnic_ulp_lock;
|
||||
|
|
@ -214,14 +231,9 @@ struct cnic_local {
|
|||
|
||||
struct cnic_eth_dev *ethdev;
|
||||
|
||||
void *l2_ring;
|
||||
dma_addr_t l2_ring_map;
|
||||
int l2_ring_size;
|
||||
int l2_rx_ring_size;
|
||||
struct cnic_uio_dev *udev;
|
||||
|
||||
void *l2_buf;
|
||||
dma_addr_t l2_buf_map;
|
||||
int l2_buf_size;
|
||||
int l2_rx_ring_size;
|
||||
int l2_single_buf_size;
|
||||
|
||||
u16 *rx_cons_ptr;
|
||||
|
|
@ -301,9 +313,6 @@ struct cnic_local {
|
|||
u32 pfid;
|
||||
u32 shmem_base;
|
||||
|
||||
u32 uio_dev;
|
||||
struct uio_info *cnic_uinfo;
|
||||
|
||||
struct cnic_ops *cnic_ops;
|
||||
int (*start_hw)(struct cnic_dev *);
|
||||
void (*stop_hw)(struct cnic_dev *);
|
||||
|
|
|
|||
Loading…
Reference in New Issue