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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/net/ethernet/natsemi/ns83820.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 #define VERSION "0.23"
23 /* ns83820.c by Benjamin LaHaise with contributions.
34  *
....@@ -9,21 +10,6 @@
910  * Copyright 2001, 2002 Red Hat.
1011  *
1112  * Mmmm, chocolate vanilla mocha...
12
- *
13
- *
14
- * This program is free software; you can redistribute it and/or modify
15
- * it under the terms of the GNU General Public License as published by
16
- * the Free Software Foundation; either version 2 of the License, or
17
- * (at your option) any later version.
18
- *
19
- * This program is distributed in the hope that it will be useful,
20
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
21
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22
- * GNU General Public License for more details.
23
- *
24
- * You should have received a copy of the GNU General Public License
25
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
26
- *
2713  *
2814  * ChangeLog
2915  * =========
....@@ -540,8 +526,8 @@
540526 
541527 	dev->rx_info.next_empty = (next_empty + 1) % NR_RX_DESC;
542528 	cmdsts = REAL_RX_BUF_SIZE | CMDSTS_INTR;
543
-	buf = pci_map_single(dev->pci_dev, skb->data,
544
-			     REAL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
529
+	buf = dma_map_single(&dev->pci_dev->dev, skb->data, REAL_RX_BUF_SIZE,
530
+			     DMA_FROM_DEVICE);
545531 	build_rx_desc(dev, sg, 0, buf, cmdsts, 0);
546532 	/* update link of previous rx */
547533 	if (likely(next_empty != dev->rx_info.next_rx))
....@@ -614,12 +600,14 @@
614600 	struct ns83820 *dev = PRIV(ndev);
615601 	static const char *speeds[] = { "10", "100", "1000", "1000(?)", "1000F" };
616602 	u32 cfg, new_cfg;
617
-	u32 tbisr, tanar, tanlpar;
603
+	u32 tanar, tanlpar;
618604 	int speed, fullduplex, newlinkstate;
619605 
620606 	cfg = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
621607 
622608 	if (dev->CFG_cache & CFG_TBI_EN) {
609
+		u32 __maybe_unused tbisr;
610
+
623611 		/* we have an optical transceiver */
624612 		tbisr = readl(dev->base + TBISR);
625613 		tanar = readl(dev->base + TANAR);
....@@ -872,8 +860,8 @@
872860 		mb();
873861 		clear_rx_desc(dev, next_rx);
874862 
875
-		pci_unmap_single(dev->pci_dev, bufptr,
876
-				 RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
863
+		dma_unmap_single(&dev->pci_dev->dev, bufptr, RX_BUF_SIZE,
864
+				 DMA_FROM_DEVICE);
877865 		len = cmdsts & CMDSTS_LEN_MASK;
878866 #ifdef NS83820_VLAN_ACCEL_SUPPORT
879867 		/* NH: As was mentioned below, this chip is kinda
....@@ -937,10 +925,10 @@
937925 	spin_unlock_irqrestore(&info->lock, flags);
938926 }
939927 
940
-static void rx_action(unsigned long _dev)
928
+static void rx_action(struct tasklet_struct *t)
941929 {
942
-	struct net_device *ndev = (void *)_dev;
943
-	struct ns83820 *dev = PRIV(ndev);
930
+	struct ns83820 *dev = from_tasklet(dev, t, rx_tasklet);
931
+	struct net_device *ndev = dev->ndev;
944932 	rx_irq(ndev);
945933 	writel(ihr, dev->base + IHR);
946934 
....@@ -999,17 +987,13 @@
999987 		len = cmdsts & CMDSTS_LEN_MASK;
1000988 		addr = desc_addr_get(desc + DESC_BUFPTR);
1001989 		if (skb) {
1002
-			pci_unmap_single(dev->pci_dev,
1003
-					addr,
1004
-					len,
1005
-					PCI_DMA_TODEVICE);
1006
-			dev_kfree_skb_irq(skb);
990
+			dma_unmap_single(&dev->pci_dev->dev, addr, len,
991
+					 DMA_TO_DEVICE);
992
+			dev_consume_skb_irq(skb);
1007993 			atomic_dec(&dev->nr_tx_skbs);
1008994 		} else
1009
-			pci_unmap_page(dev->pci_dev,
1010
-					addr,
1011
-					len,
1012
-					PCI_DMA_TODEVICE);
995
+			dma_unmap_page(&dev->pci_dev->dev, addr, len,
996
+				       DMA_TO_DEVICE);
1013997 
1014998 		tx_done_idx = (tx_done_idx + 1) % NR_TX_DESC;
1015999 		dev->tx_done_idx = tx_done_idx;
....@@ -1037,10 +1021,10 @@
10371021 		dev->tx_skbs[i] = NULL;
10381022 		if (skb) {
10391023 			__le32 *desc = dev->tx_descs + (i * DESC_SIZE);
1040
-			pci_unmap_single(dev->pci_dev,
1041
-					desc_addr_get(desc + DESC_BUFPTR),
1042
-					le32_to_cpu(desc[DESC_CMDSTS]) & CMDSTS_LEN_MASK,
1043
-					PCI_DMA_TODEVICE);
1024
+			dma_unmap_single(&dev->pci_dev->dev,
1025
+					 desc_addr_get(desc + DESC_BUFPTR),
1026
+					 le32_to_cpu(desc[DESC_CMDSTS]) & CMDSTS_LEN_MASK,
1027
+					 DMA_TO_DEVICE);
10441028 			dev_kfree_skb_irq(skb);
10451029 			atomic_dec(&dev->nr_tx_skbs);
10461030 		}
....@@ -1135,7 +1119,8 @@
11351119 	len = skb->len;
11361120 	if (nr_frags)
11371121 		len -= skb->data_len;
1138
-	buf = pci_map_single(dev->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
1122
+	buf = dma_map_single(&dev->pci_dev->dev, skb->data, len,
1123
+			     DMA_TO_DEVICE);
11391124 
11401125 	first_desc = dev->tx_descs + (free_idx * DESC_SIZE);
11411126 
....@@ -1221,7 +1206,7 @@
12211206 				      struct ethtool_link_ksettings *cmd)
12221207 {
12231208 	struct ns83820 *dev = PRIV(ndev);
1224
-	u32 cfg, tanar, tbicr;
1209
+	u32 cfg, tbicr;
12251210 	int fullduplex   = 0;
12261211 	u32 supported;
12271212 
....@@ -1240,7 +1225,7 @@
12401225 
12411226 	/* read current configuration */
12421227 	cfg   = readl(dev->base + CFG) ^ SPDSTS_POLARITY;
1243
-	tanar = readl(dev->base + TANAR);
1228
+	readl(dev->base + TANAR);
12441229 	tbicr = readl(dev->base + TBICR);
12451230 
12461231 	fullduplex = (cfg & CFG_DUPSTS) ? 1 : 0;
....@@ -1563,7 +1548,7 @@
15631548 	return 0;
15641549 }
15651550 
1566
-static void ns83820_tx_timeout(struct net_device *ndev)
1551
+static void ns83820_tx_timeout(struct net_device *ndev, unsigned int txqueue)
15671552 {
15681553 	struct ns83820 *dev = PRIV(ndev);
15691554         u32 tx_done_idx;
....@@ -1617,7 +1602,7 @@
16171602 			ndev->name,
16181603 			dev->tx_done_idx, dev->tx_free_idx,
16191604 			atomic_read(&dev->nr_tx_skbs));
1620
-		ns83820_tx_timeout(ndev);
1605
+		ns83820_tx_timeout(ndev, UINT_MAX);
16211606 	}
16221607 
16231608 	mod_timer(&dev->tx_watchdog, jiffies + 2*HZ);
....@@ -1869,56 +1854,28 @@
18691854 static void ns83820_probe_phy(struct net_device *ndev)
18701855 {
18711856 	struct ns83820 *dev = PRIV(ndev);
1872
-	static int first;
1873
-	int i;
1874
-#define MII_PHYIDR1	0x02
1875
-#define MII_PHYIDR2	0x03
1857
+	int j;
1858
+	unsigned a, b;
18761859 
1877
-#if 0
1878
-	if (!first) {
1879
-		unsigned tmp;
1880
-		ns83820_mii_read_reg(dev, 1, 0x09);
1881
-		ns83820_mii_write_reg(dev, 1, 0x10, 0x0d3e);
1882
-
1883
-		tmp = ns83820_mii_read_reg(dev, 1, 0x00);
1884
-		ns83820_mii_write_reg(dev, 1, 0x00, tmp | 0x8000);
1885
-		udelay(1300);
1886
-		ns83820_mii_read_reg(dev, 1, 0x09);
1860
+	for (j = 0; j < 0x16; j += 4) {
1861
+		dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
1862
+			ndev->name, j,
1863
+			ns83820_mii_read_reg(dev, 1, 0 + j),
1864
+			ns83820_mii_read_reg(dev, 1, 1 + j),
1865
+			ns83820_mii_read_reg(dev, 1, 2 + j),
1866
+			ns83820_mii_read_reg(dev, 1, 3 + j)
1867
+			);
18871868 	}
1888
-#endif
1889
-	first = 1;
18901869 
1891
-	for (i=1; i<2; i++) {
1892
-		int j;
1893
-		unsigned a, b;
1894
-		a = ns83820_mii_read_reg(dev, i, MII_PHYIDR1);
1895
-		b = ns83820_mii_read_reg(dev, i, MII_PHYIDR2);
1870
+	/* read firmware version: memory addr is 0x8402 and 0x8403 */
1871
+	ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
1872
+	ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
1873
+	a = ns83820_mii_read_reg(dev, 1, 0x1d);
18961874 
1897
-		//printk("%s: phy %d: 0x%04x 0x%04x\n",
1898
-		//	ndev->name, i, a, b);
1899
-
1900
-		for (j=0; j<0x16; j+=4) {
1901
-			dprintk("%s: [0x%02x] %04x %04x %04x %04x\n",
1902
-				ndev->name, j,
1903
-				ns83820_mii_read_reg(dev, i, 0 + j),
1904
-				ns83820_mii_read_reg(dev, i, 1 + j),
1905
-				ns83820_mii_read_reg(dev, i, 2 + j),
1906
-				ns83820_mii_read_reg(dev, i, 3 + j)
1907
-				);
1908
-		}
1909
-	}
1910
-	{
1911
-		unsigned a, b;
1912
-		/* read firmware version: memory addr is 0x8402 and 0x8403 */
1913
-		ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
1914
-		ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
1915
-		a = ns83820_mii_read_reg(dev, 1, 0x1d);
1916
-
1917
-		ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
1918
-		ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
1919
-		b = ns83820_mii_read_reg(dev, 1, 0x1d);
1920
-		dprintk("version: 0x%04x 0x%04x\n", a, b);
1921
-	}
1875
+	ns83820_mii_write_reg(dev, 1, 0x16, 0x000d);
1876
+	ns83820_mii_write_reg(dev, 1, 0x1e, 0x810e);
1877
+	b = ns83820_mii_read_reg(dev, 1, 0x1d);
1878
+	dprintk("version: 0x%04x 0x%04x\n", a, b);
19221879 }
19231880 #endif
19241881 
....@@ -1944,12 +1901,12 @@
19441901 
19451902 	/* See if we can set the dma mask early on; failure is fatal. */
19461903 	if (sizeof(dma_addr_t) == 8 &&
1947
-		!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(64))) {
1904
+		!dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(64))) {
19481905 		using_dac = 1;
1949
-	} else if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
1906
+	} else if (!dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
19501907 		using_dac = 0;
19511908 	} else {
1952
-		dev_warn(&pci_dev->dev, "pci_set_dma_mask failed!\n");
1909
+		dev_warn(&pci_dev->dev, "dma_set_mask failed!\n");
19531910 		return -ENODEV;
19541911 	}
19551912 
....@@ -1969,7 +1926,7 @@
19691926 	SET_NETDEV_DEV(ndev, &pci_dev->dev);
19701927 
19711928 	INIT_WORK(&dev->tq_refill, queue_refill);
1972
-	tasklet_init(&dev->rx_tasklet, rx_action, (unsigned long)ndev);
1929
+	tasklet_setup(&dev->rx_tasklet, rx_action);
19731930 
19741931 	err = pci_enable_device(pci_dev);
19751932 	if (err) {
....@@ -1979,11 +1936,13 @@
19791936 
19801937 	pci_set_master(pci_dev);
19811938 	addr = pci_resource_start(pci_dev, 1);
1982
-	dev->base = ioremap_nocache(addr, PAGE_SIZE);
1983
-	dev->tx_descs = pci_alloc_consistent(pci_dev,
1984
-			4 * DESC_SIZE * NR_TX_DESC, &dev->tx_phy_descs);
1985
-	dev->rx_info.descs = pci_alloc_consistent(pci_dev,
1986
-			4 * DESC_SIZE * NR_RX_DESC, &dev->rx_info.phy_descs);
1939
+	dev->base = ioremap(addr, PAGE_SIZE);
1940
+	dev->tx_descs = dma_alloc_coherent(&pci_dev->dev,
1941
+					   4 * DESC_SIZE * NR_TX_DESC,
1942
+					   &dev->tx_phy_descs, GFP_KERNEL);
1943
+	dev->rx_info.descs = dma_alloc_coherent(&pci_dev->dev,
1944
+						4 * DESC_SIZE * NR_RX_DESC,
1945
+						&dev->rx_info.phy_descs, GFP_KERNEL);
19871946 	err = -ENOMEM;
19881947 	if (!dev->base || !dev->tx_descs || !dev->rx_info.descs)
19891948 		goto out_disable;
....@@ -2225,8 +2184,10 @@
22252184 out_disable:
22262185 	if (dev->base)
22272186 		iounmap(dev->base);
2228
-	pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_TX_DESC, dev->tx_descs, dev->tx_phy_descs);
2229
-	pci_free_consistent(pci_dev, 4 * DESC_SIZE * NR_RX_DESC, dev->rx_info.descs, dev->rx_info.phy_descs);
2187
+	dma_free_coherent(&pci_dev->dev, 4 * DESC_SIZE * NR_TX_DESC,
2188
+			  dev->tx_descs, dev->tx_phy_descs);
2189
+	dma_free_coherent(&pci_dev->dev, 4 * DESC_SIZE * NR_RX_DESC,
2190
+			  dev->rx_info.descs, dev->rx_info.phy_descs);
22302191 	pci_disable_device(pci_dev);
22312192 out_free:
22322193 	free_netdev(ndev);
....@@ -2247,10 +2208,10 @@
22472208 	unregister_netdev(ndev);
22482209 	free_irq(dev->pci_dev->irq, ndev);
22492210 	iounmap(dev->base);
2250
-	pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_TX_DESC,
2251
-			dev->tx_descs, dev->tx_phy_descs);
2252
-	pci_free_consistent(dev->pci_dev, 4 * DESC_SIZE * NR_RX_DESC,
2253
-			dev->rx_info.descs, dev->rx_info.phy_descs);
2211
+	dma_free_coherent(&dev->pci_dev->dev, 4 * DESC_SIZE * NR_TX_DESC,
2212
+			  dev->tx_descs, dev->tx_phy_descs);
2213
+	dma_free_coherent(&dev->pci_dev->dev, 4 * DESC_SIZE * NR_RX_DESC,
2214
+			  dev->rx_info.descs, dev->rx_info.phy_descs);
22542215 	pci_disable_device(dev->pci_dev);
22552216 	free_netdev(ndev);
22562217 }