unsigned int qp_num)
{
struct ntb_transport_qp *qp;
- struct ntb_transport_mw *mw;
phys_addr_t mw_base;
resource_size_t mw_size;
unsigned int num_qps_mw, tx_size;
qp_count = nt->qp_count;
mw_num = QP_TO_MW(nt, qp_num);
- mw = &nt->mw_vec[mw_num];
qp = &nt->qp_vec[qp_num];
qp->qp_num = qp_num;
GFP_KERNEL, node);
if (!nt->qp_vec) {
rc = -ENOMEM;
- goto err2;
+ goto err1;
}
if (nt_debugfs_dir) {
for (i = 0; i < qp_count; i++) {
rc = ntb_transport_init_queue(nt, i);
if (rc)
- goto err3;
+ goto err2;
}
INIT_DELAYED_WORK(&nt->link_work, ntb_transport_link_work);
rc = ntb_set_ctx(ndev, nt, &ntb_transport_ops);
if (rc)
- goto err3;
+ goto err2;
INIT_LIST_HEAD(&nt->client_devs);
rc = ntb_bus_init(nt);
if (rc)
- goto err4;
+ goto err3;
nt->link_is_up = false;
ntb_link_enable(ndev, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);
return 0;
-err4:
- ntb_clear_ctx(ndev);
err3:
- kfree(nt->qp_vec);
+ ntb_clear_ctx(ndev);
err2:
- kfree(nt->mw_vec);
+ kfree(nt->qp_vec);
err1:
while (i--) {
mw = &nt->mw_vec[i];
iounmap(mw->vbase);
}
+ kfree(nt->mw_vec);
err:
kfree(nt);
return rc;
*/
void ntb_transport_link_down(struct ntb_transport_qp *qp)
{
- struct pci_dev *pdev;
int val;
if (!qp)
return;
- pdev = qp->ndev->pdev;
qp->client_ready = false;
val = ntb_spad_read(qp->ndev, QP_LINKS);
*/
unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp)
{
- unsigned int max;
+ unsigned int max_size;
unsigned int copy_align;
+ struct dma_chan *rx_chan, *tx_chan;
if (!qp)
return 0;
- if (!qp->tx_dma_chan && !qp->rx_dma_chan)
- return qp->tx_max_frame - sizeof(struct ntb_payload_header);
+ rx_chan = qp->rx_dma_chan;
+ tx_chan = qp->tx_dma_chan;
- copy_align = max(qp->tx_dma_chan->device->copy_align,
- qp->rx_dma_chan->device->copy_align);
+ copy_align = max(rx_chan ? rx_chan->device->copy_align : 0,
+ tx_chan ? tx_chan->device->copy_align : 0);
/* If DMA engine usage is possible, try to find the max size for that */
- max = qp->tx_max_frame - sizeof(struct ntb_payload_header);
- max -= max % (1 << copy_align);
+ max_size = qp->tx_max_frame - sizeof(struct ntb_payload_header);
+ max_size = round_down(max_size, 1 << copy_align);
- return max;
+ return max_size;
}
EXPORT_SYMBOL_GPL(ntb_transport_max_size);