Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/hplance.c b/drivers/net/ethernet/amd/hplance.c
new file mode 100644
index 000000000..055fda11c
--- /dev/null
+++ b/drivers/net/ethernet/amd/hplance.c
@@ -0,0 +1,237 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* hplance.c  : the  Linux/hp300/lance ethernet driver
+ *
+ * Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+ * Based on the Sun Lance driver and the NetBSD HP Lance driver
+ * Uses the generic 7990.c LANCE code.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pgtable.h>
+/* Used for the temporal inet entries and routing */
+#include <linux/socket.h>
+#include <linux/route.h>
+#include <linux/dio.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <asm/io.h>
+
+#include "hplance.h"
+
+/* We have 16392 bytes of RAM for the init block and buffers. This places
+ * an upper limit on the number of buffers we can use. NetBSD uses 8 Rx
+ * buffers and 2 Tx buffers, it takes (8 + 2) * 1544 bytes.
+ */
+#define LANCE_LOG_TX_BUFFERS 1
+#define LANCE_LOG_RX_BUFFERS 3
+
+#include "7990.h"                                 /* use generic LANCE code */
+
+/* Our private data structure */
+struct hplance_private {
+	struct lance_private lance;
+};
+
+/* function prototypes... This is easy because all the grot is in the
+ * generic LANCE support. All we have to support is probing for boards,
+ * plus board-specific init, open and close actions.
+ * Oh, and we need to tell the generic code how to read and write LANCE registers...
+ */
+static int hplance_init_one(struct dio_dev *d, const struct dio_device_id *ent);
+static void hplance_init(struct net_device *dev, struct dio_dev *d);
+static void hplance_remove_one(struct dio_dev *d);
+static void hplance_writerap(void *priv, unsigned short value);
+static void hplance_writerdp(void *priv, unsigned short value);
+static unsigned short hplance_readrdp(void *priv);
+static int hplance_open(struct net_device *dev);
+static int hplance_close(struct net_device *dev);
+
+static struct dio_device_id hplance_dio_tbl[] = {
+	{ DIO_ID_LAN },
+	{ 0 }
+};
+
+static struct dio_driver hplance_driver = {
+	.name      = "hplance",
+	.id_table  = hplance_dio_tbl,
+	.probe     = hplance_init_one,
+	.remove    = hplance_remove_one,
+};
+
+static const struct net_device_ops hplance_netdev_ops = {
+	.ndo_open		= hplance_open,
+	.ndo_stop		= hplance_close,
+	.ndo_start_xmit		= lance_start_xmit,
+	.ndo_set_rx_mode	= lance_set_multicast,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= lance_poll,
+#endif
+};
+
+/* Find all the HP Lance boards and initialise them... */
+static int hplance_init_one(struct dio_dev *d, const struct dio_device_id *ent)
+{
+	struct net_device *dev;
+	int err = -ENOMEM;
+
+	dev = alloc_etherdev(sizeof(struct hplance_private));
+	if (!dev)
+		goto out;
+
+	err = -EBUSY;
+	if (!request_mem_region(dio_resource_start(d),
+				dio_resource_len(d), d->name))
+		goto out_free_netdev;
+
+	hplance_init(dev, d);
+	err = register_netdev(dev);
+	if (err)
+		goto out_release_mem_region;
+
+	dio_set_drvdata(d, dev);
+
+	printk(KERN_INFO "%s: %s; select code %d, addr %pM, irq %d\n",
+	       dev->name, d->name, d->scode, dev->dev_addr, d->ipl);
+
+	return 0;
+
+ out_release_mem_region:
+	release_mem_region(dio_resource_start(d), dio_resource_len(d));
+ out_free_netdev:
+	free_netdev(dev);
+ out:
+	return err;
+}
+
+static void hplance_remove_one(struct dio_dev *d)
+{
+	struct net_device *dev = dio_get_drvdata(d);
+
+	unregister_netdev(dev);
+	release_mem_region(dio_resource_start(d), dio_resource_len(d));
+	free_netdev(dev);
+}
+
+/* Initialise a single lance board at the given DIO device */
+static void hplance_init(struct net_device *dev, struct dio_dev *d)
+{
+	unsigned long va = (d->resource.start + DIO_VIRADDRBASE);
+	struct hplance_private *lp;
+	u8 addr[ETH_ALEN];
+	int i;
+
+	/* reset the board */
+	out_8(va + DIO_IDOFF, 0xff);
+	udelay(100);                              /* ariba! ariba! udelay! udelay! */
+
+	/* Fill the dev fields */
+	dev->base_addr = va;
+	dev->netdev_ops = &hplance_netdev_ops;
+	dev->dma = 0;
+
+	for (i = 0; i < 6; i++) {
+		/* The NVRAM holds our ethernet address, one nibble per byte,
+		 * at bytes NVRAMOFF+1,3,5,7,9...
+		 */
+		addr[i] = ((in_8(va + HPLANCE_NVRAMOFF + i*4 + 1) & 0xF) << 4)
+			| (in_8(va + HPLANCE_NVRAMOFF + i*4 + 3) & 0xF);
+	}
+	eth_hw_addr_set(dev, addr);
+
+	lp = netdev_priv(dev);
+	lp->lance.name = d->name;
+	lp->lance.base = va;
+	lp->lance.init_block = (struct lance_init_block *)(va + HPLANCE_MEMOFF); /* CPU addr */
+	lp->lance.lance_init_block = NULL;              /* LANCE addr of same RAM */
+	lp->lance.busmaster_regval = LE_C3_BSWP;        /* we're bigendian */
+	lp->lance.irq = d->ipl;
+	lp->lance.writerap = hplance_writerap;
+	lp->lance.writerdp = hplance_writerdp;
+	lp->lance.readrdp = hplance_readrdp;
+	lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
+	lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
+	lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK;
+	lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK;
+}
+
+/* This is disgusting. We have to check the DIO status register for ack every
+ * time we read or write the LANCE registers.
+ */
+static void hplance_writerap(void *priv, unsigned short value)
+{
+	struct lance_private *lp = (struct lance_private *)priv;
+
+	do {
+		out_be16(lp->base + HPLANCE_REGOFF + LANCE_RAP, value);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static void hplance_writerdp(void *priv, unsigned short value)
+{
+	struct lance_private *lp = (struct lance_private *)priv;
+
+	do {
+		out_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP, value);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+}
+
+static unsigned short hplance_readrdp(void *priv)
+{
+	struct lance_private *lp = (struct lance_private *)priv;
+	__u16 value;
+
+	do {
+		value = in_be16(lp->base + HPLANCE_REGOFF + LANCE_RDP);
+	} while ((in_8(lp->base + HPLANCE_STATUS) & LE_ACK) == 0);
+	return value;
+}
+
+static int hplance_open(struct net_device *dev)
+{
+	int status;
+	struct lance_private *lp = netdev_priv(dev);
+
+	status = lance_open(dev);                 /* call generic lance open code */
+	if (status)
+		return status;
+	/* enable interrupts at board level. */
+	out_8(lp->base + HPLANCE_STATUS, LE_IE);
+
+	return 0;
+}
+
+static int hplance_close(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+
+	out_8(lp->base + HPLANCE_STATUS, 0);	/* disable interrupts at boardlevel */
+	lance_close(dev);
+	return 0;
+}
+
+static int __init hplance_init_module(void)
+{
+	return dio_register_driver(&hplance_driver);
+}
+
+static void __exit hplance_cleanup_module(void)
+{
+	dio_unregister_driver(&hplance_driver);
+}
+
+module_init(hplance_init_module);
+module_exit(hplance_cleanup_module);
+
+MODULE_LICENSE("GPL");