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-rw-r--r--drivers/net/ucc_geth.c300
1 files changed, 149 insertions, 151 deletions
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 3b647d07e410..a39368a46352 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -1412,6 +1412,155 @@ static int adjust_enet_interface(struct ucc_geth_private *ugeth)
1412 return 0; 1412 return 0;
1413} 1413}
1414 1414
1415static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth)
1416{
1417 struct ucc_fast_private *uccf;
1418 u32 cecr_subblock;
1419 u32 temp;
1420 int i = 10;
1421
1422 uccf = ugeth->uccf;
1423
1424 /* Mask GRACEFUL STOP TX interrupt bit and clear it */
1425 clrbits32(uccf->p_uccm, UCC_GETH_UCCE_GRA);
1426 out_be32(uccf->p_ucce, UCC_GETH_UCCE_GRA); /* clear by writing 1 */
1427
1428 /* Issue host command */
1429 cecr_subblock =
1430 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1431 qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
1432 QE_CR_PROTOCOL_ETHERNET, 0);
1433
1434 /* Wait for command to complete */
1435 do {
1436 msleep(10);
1437 temp = in_be32(uccf->p_ucce);
1438 } while (!(temp & UCC_GETH_UCCE_GRA) && --i);
1439
1440 uccf->stopped_tx = 1;
1441
1442 return 0;
1443}
1444
1445static int ugeth_graceful_stop_rx(struct ucc_geth_private *ugeth)
1446{
1447 struct ucc_fast_private *uccf;
1448 u32 cecr_subblock;
1449 u8 temp;
1450 int i = 10;
1451
1452 uccf = ugeth->uccf;
1453
1454 /* Clear acknowledge bit */
1455 temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1456 temp &= ~GRACEFUL_STOP_ACKNOWLEDGE_RX;
1457 out_8(&ugeth->p_rx_glbl_pram->rxgstpack, temp);
1458
1459 /* Keep issuing command and checking acknowledge bit until
1460 it is asserted, according to spec */
1461 do {
1462 /* Issue host command */
1463 cecr_subblock =
1464 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.
1465 ucc_num);
1466 qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
1467 QE_CR_PROTOCOL_ETHERNET, 0);
1468 msleep(10);
1469 temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1470 } while (!(temp & GRACEFUL_STOP_ACKNOWLEDGE_RX) && --i);
1471
1472 uccf->stopped_rx = 1;
1473
1474 return 0;
1475}
1476
1477static int ugeth_restart_tx(struct ucc_geth_private *ugeth)
1478{
1479 struct ucc_fast_private *uccf;
1480 u32 cecr_subblock;
1481
1482 uccf = ugeth->uccf;
1483
1484 cecr_subblock =
1485 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1486 qe_issue_cmd(QE_RESTART_TX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET, 0);
1487 uccf->stopped_tx = 0;
1488
1489 return 0;
1490}
1491
1492static int ugeth_restart_rx(struct ucc_geth_private *ugeth)
1493{
1494 struct ucc_fast_private *uccf;
1495 u32 cecr_subblock;
1496
1497 uccf = ugeth->uccf;
1498
1499 cecr_subblock =
1500 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1501 qe_issue_cmd(QE_RESTART_RX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET,
1502 0);
1503 uccf->stopped_rx = 0;
1504
1505 return 0;
1506}
1507
1508static int ugeth_enable(struct ucc_geth_private *ugeth, enum comm_dir mode)
1509{
1510 struct ucc_fast_private *uccf;
1511 int enabled_tx, enabled_rx;
1512
1513 uccf = ugeth->uccf;
1514
1515 /* check if the UCC number is in range. */
1516 if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1517 if (netif_msg_probe(ugeth))
1518 ugeth_err("%s: ucc_num out of range.", __func__);
1519 return -EINVAL;
1520 }
1521
1522 enabled_tx = uccf->enabled_tx;
1523 enabled_rx = uccf->enabled_rx;
1524
1525 /* Get Tx and Rx going again, in case this channel was actively
1526 disabled. */
1527 if ((mode & COMM_DIR_TX) && (!enabled_tx) && uccf->stopped_tx)
1528 ugeth_restart_tx(ugeth);
1529 if ((mode & COMM_DIR_RX) && (!enabled_rx) && uccf->stopped_rx)
1530 ugeth_restart_rx(ugeth);
1531
1532 ucc_fast_enable(uccf, mode); /* OK to do even if not disabled */
1533
1534 return 0;
1535
1536}
1537
1538static int ugeth_disable(struct ucc_geth_private *ugeth, enum comm_dir mode)
1539{
1540 struct ucc_fast_private *uccf;
1541
1542 uccf = ugeth->uccf;
1543
1544 /* check if the UCC number is in range. */
1545 if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1546 if (netif_msg_probe(ugeth))
1547 ugeth_err("%s: ucc_num out of range.", __func__);
1548 return -EINVAL;
1549 }
1550
1551 /* Stop any transmissions */
1552 if ((mode & COMM_DIR_TX) && uccf->enabled_tx && !uccf->stopped_tx)
1553 ugeth_graceful_stop_tx(ugeth);
1554
1555 /* Stop any receptions */
1556 if ((mode & COMM_DIR_RX) && uccf->enabled_rx && !uccf->stopped_rx)
1557 ugeth_graceful_stop_rx(ugeth);
1558
1559 ucc_fast_disable(ugeth->uccf, mode); /* OK to do even if not enabled */
1560
1561 return 0;
1562}
1563
1415/* Called every time the controller might need to be made 1564/* Called every time the controller might need to be made
1416 * aware of new link state. The PHY code conveys this 1565 * aware of new link state. The PHY code conveys this
1417 * information through variables in the ugeth structure, and this 1566 * information through variables in the ugeth structure, and this
@@ -1587,157 +1736,6 @@ static int init_phy(struct net_device *dev)
1587 return 0; 1736 return 0;
1588} 1737}
1589 1738
1590
1591
1592static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth)
1593{
1594 struct ucc_fast_private *uccf;
1595 u32 cecr_subblock;
1596 u32 temp;
1597 int i = 10;
1598
1599 uccf = ugeth->uccf;
1600
1601 /* Mask GRACEFUL STOP TX interrupt bit and clear it */
1602 clrbits32(uccf->p_uccm, UCC_GETH_UCCE_GRA);
1603 out_be32(uccf->p_ucce, UCC_GETH_UCCE_GRA); /* clear by writing 1 */
1604
1605 /* Issue host command */
1606 cecr_subblock =
1607 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1608 qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
1609 QE_CR_PROTOCOL_ETHERNET, 0);
1610
1611 /* Wait for command to complete */
1612 do {
1613 msleep(10);
1614 temp = in_be32(uccf->p_ucce);
1615 } while (!(temp & UCC_GETH_UCCE_GRA) && --i);
1616
1617 uccf->stopped_tx = 1;
1618
1619 return 0;
1620}
1621
1622static int ugeth_graceful_stop_rx(struct ucc_geth_private * ugeth)
1623{
1624 struct ucc_fast_private *uccf;
1625 u32 cecr_subblock;
1626 u8 temp;
1627 int i = 10;
1628
1629 uccf = ugeth->uccf;
1630
1631 /* Clear acknowledge bit */
1632 temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1633 temp &= ~GRACEFUL_STOP_ACKNOWLEDGE_RX;
1634 out_8(&ugeth->p_rx_glbl_pram->rxgstpack, temp);
1635
1636 /* Keep issuing command and checking acknowledge bit until
1637 it is asserted, according to spec */
1638 do {
1639 /* Issue host command */
1640 cecr_subblock =
1641 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.
1642 ucc_num);
1643 qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
1644 QE_CR_PROTOCOL_ETHERNET, 0);
1645 msleep(10);
1646 temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1647 } while (!(temp & GRACEFUL_STOP_ACKNOWLEDGE_RX) && --i);
1648
1649 uccf->stopped_rx = 1;
1650
1651 return 0;
1652}
1653
1654static int ugeth_restart_tx(struct ucc_geth_private *ugeth)
1655{
1656 struct ucc_fast_private *uccf;
1657 u32 cecr_subblock;
1658
1659 uccf = ugeth->uccf;
1660
1661 cecr_subblock =
1662 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1663 qe_issue_cmd(QE_RESTART_TX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET, 0);
1664 uccf->stopped_tx = 0;
1665
1666 return 0;
1667}
1668
1669static int ugeth_restart_rx(struct ucc_geth_private *ugeth)
1670{
1671 struct ucc_fast_private *uccf;
1672 u32 cecr_subblock;
1673
1674 uccf = ugeth->uccf;
1675
1676 cecr_subblock =
1677 ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1678 qe_issue_cmd(QE_RESTART_RX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET,
1679 0);
1680 uccf->stopped_rx = 0;
1681
1682 return 0;
1683}
1684
1685static int ugeth_enable(struct ucc_geth_private *ugeth, enum comm_dir mode)
1686{
1687 struct ucc_fast_private *uccf;
1688 int enabled_tx, enabled_rx;
1689
1690 uccf = ugeth->uccf;
1691
1692 /* check if the UCC number is in range. */
1693 if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1694 if (netif_msg_probe(ugeth))
1695 ugeth_err("%s: ucc_num out of range.", __func__);
1696 return -EINVAL;
1697 }
1698
1699 enabled_tx = uccf->enabled_tx;
1700 enabled_rx = uccf->enabled_rx;
1701
1702 /* Get Tx and Rx going again, in case this channel was actively
1703 disabled. */
1704 if ((mode & COMM_DIR_TX) && (!enabled_tx) && uccf->stopped_tx)
1705 ugeth_restart_tx(ugeth);
1706 if ((mode & COMM_DIR_RX) && (!enabled_rx) && uccf->stopped_rx)
1707 ugeth_restart_rx(ugeth);
1708
1709 ucc_fast_enable(uccf, mode); /* OK to do even if not disabled */
1710
1711 return 0;
1712
1713}
1714
1715static int ugeth_disable(struct ucc_geth_private * ugeth, enum comm_dir mode)
1716{
1717 struct ucc_fast_private *uccf;
1718
1719 uccf = ugeth->uccf;
1720
1721 /* check if the UCC number is in range. */
1722 if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1723 if (netif_msg_probe(ugeth))
1724 ugeth_err("%s: ucc_num out of range.", __func__);
1725 return -EINVAL;
1726 }
1727
1728 /* Stop any transmissions */
1729 if ((mode & COMM_DIR_TX) && uccf->enabled_tx && !uccf->stopped_tx)
1730 ugeth_graceful_stop_tx(ugeth);
1731
1732 /* Stop any receptions */
1733 if ((mode & COMM_DIR_RX) && uccf->enabled_rx && !uccf->stopped_rx)
1734 ugeth_graceful_stop_rx(ugeth);
1735
1736 ucc_fast_disable(ugeth->uccf, mode); /* OK to do even if not enabled */
1737
1738 return 0;
1739}
1740
1741static void ugeth_dump_regs(struct ucc_geth_private *ugeth) 1739static void ugeth_dump_regs(struct ucc_geth_private *ugeth)
1742{ 1740{
1743#ifdef DEBUG 1741#ifdef DEBUG
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-30 17:48:58 -0500