forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/drivers/net/ethernet/renesas/sh_eth.c
....@@ -45,6 +45,15 @@
4545 #define SH_ETH_OFFSET_DEFAULTS			\
4646 	[0 ... SH_ETH_MAX_REGISTER_OFFSET - 1] = SH_ETH_OFFSET_INVALID
4747 
48
+/* use some intentionally tricky logic here to initialize the whole struct to
49
+ * 0xffff, but then override certain fields, requiring us to indicate that we
50
+ * "know" that there are overrides in this structure, and we'll need to disable
51
+ * that warning from W=1 builds. GCC has supported this option since 4.2.X, but
52
+ * the macros available to do this only define GCC 8.
53
+ */
54
+__diag_push();
55
+__diag_ignore(GCC, 8, "-Woverride-init",
56
+	      "logic to initialize all and then override some is OK");
4857 static const u16 sh_eth_offset_gigabit[SH_ETH_MAX_REGISTER_OFFSET] = {
4958 	SH_ETH_OFFSET_DEFAULTS,
5059 
....@@ -140,69 +149,6 @@
140149 	[RXALCR1]	= 0x00ac,
141150 	[FWNLCR1]	= 0x00b0,
142151 	[FWALCR1]	= 0x00b4,
143
-};
144
-
145
-static const u16 sh_eth_offset_fast_rz[SH_ETH_MAX_REGISTER_OFFSET] = {
146
-	SH_ETH_OFFSET_DEFAULTS,
147
-
148
-	[EDSR]		= 0x0000,
149
-	[EDMR]		= 0x0400,
150
-	[EDTRR]		= 0x0408,
151
-	[EDRRR]		= 0x0410,
152
-	[EESR]		= 0x0428,
153
-	[EESIPR]	= 0x0430,
154
-	[TDLAR]		= 0x0010,
155
-	[TDFAR]		= 0x0014,
156
-	[TDFXR]		= 0x0018,
157
-	[TDFFR]		= 0x001c,
158
-	[RDLAR]		= 0x0030,
159
-	[RDFAR]		= 0x0034,
160
-	[RDFXR]		= 0x0038,
161
-	[RDFFR]		= 0x003c,
162
-	[TRSCER]	= 0x0438,
163
-	[RMFCR]		= 0x0440,
164
-	[TFTR]		= 0x0448,
165
-	[FDR]		= 0x0450,
166
-	[RMCR]		= 0x0458,
167
-	[RPADIR]	= 0x0460,
168
-	[FCFTR]		= 0x0468,
169
-	[CSMR]		= 0x04E4,
170
-
171
-	[ECMR]		= 0x0500,
172
-	[RFLR]		= 0x0508,
173
-	[ECSR]		= 0x0510,
174
-	[ECSIPR]	= 0x0518,
175
-	[PIR]		= 0x0520,
176
-	[APR]		= 0x0554,
177
-	[MPR]		= 0x0558,
178
-	[PFTCR]		= 0x055c,
179
-	[PFRCR]		= 0x0560,
180
-	[TPAUSER]	= 0x0564,
181
-	[MAHR]		= 0x05c0,
182
-	[MALR]		= 0x05c8,
183
-	[CEFCR]		= 0x0740,
184
-	[FRECR]		= 0x0748,
185
-	[TSFRCR]	= 0x0750,
186
-	[TLFRCR]	= 0x0758,
187
-	[RFCR]		= 0x0760,
188
-	[MAFCR]		= 0x0778,
189
-
190
-	[ARSTR]		= 0x0000,
191
-	[TSU_CTRST]	= 0x0004,
192
-	[TSU_FWSLC]	= 0x0038,
193
-	[TSU_VTAG0]	= 0x0058,
194
-	[TSU_ADSBSY]	= 0x0060,
195
-	[TSU_TEN]	= 0x0064,
196
-	[TSU_POST1]	= 0x0070,
197
-	[TSU_POST2]	= 0x0074,
198
-	[TSU_POST3]	= 0x0078,
199
-	[TSU_POST4]	= 0x007c,
200
-	[TSU_ADRH0]	= 0x0100,
201
-
202
-	[TXNLCR0]	= 0x0080,
203
-	[TXALCR0]	= 0x0084,
204
-	[RXNLCR0]	= 0x0088,
205
-	[RXALCR0]	= 0x008C,
206152 };
207153 
208154 static const u16 sh_eth_offset_fast_rcar[SH_ETH_MAX_REGISTER_OFFSET] = {
....@@ -395,6 +341,7 @@
395341 
396342 	[TSU_ADRH0]	= 0x0100,
397343 };
344
+__diag_pop();
398345 
399346 static void sh_eth_rcv_snd_disable(struct net_device *ndev);
400347 static struct net_device_stats *sh_eth_get_stats(struct net_device *ndev);
....@@ -555,7 +502,7 @@
555502 	sh_eth_write(ndev, 0, RDFFR);
556503 
557504 	/* Reset HW CRC register */
558
-	if (mdp->cd->hw_checksum)
505
+	if (mdp->cd->csmr)
559506 		sh_eth_write(ndev, 0, CSMR);
560507 
561508 	/* Select MII mode */
....@@ -568,6 +515,9 @@
568515 static void sh_eth_set_rate_gether(struct net_device *ndev)
569516 {
570517 	struct sh_eth_private *mdp = netdev_priv(ndev);
518
+
519
+	if (WARN_ON(!mdp->cd->gecmr))
520
+		return;
571521 
572522 	switch (mdp->speed) {
573523 	case 10: /* 10BASE */
....@@ -590,7 +540,7 @@
590540 	.chip_reset	= sh_eth_chip_reset,
591541 	.set_duplex	= sh_eth_set_duplex,
592542 
593
-	.register_type	= SH_ETH_REG_FAST_RZ,
543
+	.register_type	= SH_ETH_REG_GIGABIT,
594544 
595545 	.edtrr_trns	= EDTRR_TRNS_GETHER,
596546 	.ecsr_value	= ECSR_ICD,
....@@ -621,7 +571,8 @@
621571 	.no_trimd	= 1,
622572 	.no_ade		= 1,
623573 	.xdfar_rw	= 1,
624
-	.hw_checksum	= 1,
574
+	.csmr		= 1,
575
+	.rx_csum	= 1,
625576 	.tsu		= 1,
626577 	.no_tx_cntrs	= 1,
627578 };
....@@ -664,13 +615,15 @@
664615 	.apr		= 1,
665616 	.mpr		= 1,
666617 	.tpauser	= 1,
618
+	.gecmr		= 1,
667619 	.bculr		= 1,
668620 	.hw_swap	= 1,
669621 	.rpadir		= 1,
670622 	.no_trimd	= 1,
671623 	.no_ade		= 1,
672624 	.xdfar_rw	= 1,
673
-	.hw_checksum	= 1,
625
+	.csmr		= 1,
626
+	.rx_csum	= 1,
674627 	.tsu		= 1,
675628 	.select_mii	= 1,
676629 	.magic		= 1,
....@@ -788,6 +741,7 @@
788741 	.apr		= 1,
789742 	.mpr		= 1,
790743 	.tpauser	= 1,
744
+	.gecmr		= 1,
791745 	.bculr		= 1,
792746 	.hw_swap	= 1,
793747 	.nbst		= 1,
....@@ -795,7 +749,8 @@
795749 	.no_trimd	= 1,
796750 	.no_ade		= 1,
797751 	.xdfar_rw	= 1,
798
-	.hw_checksum	= 1,
752
+	.csmr		= 1,
753
+	.rx_csum	= 1,
799754 	.select_mii	= 1,
800755 	.magic		= 1,
801756 	.cexcr		= 1,
....@@ -958,6 +913,9 @@
958913 {
959914 	struct sh_eth_private *mdp = netdev_priv(ndev);
960915 
916
+	if (WARN_ON(!mdp->cd->gecmr))
917
+		return;
918
+
961919 	switch (mdp->speed) {
962920 	case 10: /* 10BASE */
963921 		sh_eth_write(ndev, 0x00000000, GECMR);
....@@ -1003,6 +961,7 @@
1003961 	.apr		= 1,
1004962 	.mpr		= 1,
1005963 	.tpauser	= 1,
964
+	.gecmr		= 1,
1006965 	.bculr		= 1,
1007966 	.hw_swap	= 1,
1008967 	.rpadir		= 1,
....@@ -1043,13 +1002,15 @@
10431002 	.apr		= 1,
10441003 	.mpr		= 1,
10451004 	.tpauser	= 1,
1005
+	.gecmr		= 1,
10461006 	.bculr		= 1,
10471007 	.hw_swap	= 1,
10481008 	.no_trimd	= 1,
10491009 	.no_ade		= 1,
10501010 	.xdfar_rw	= 1,
10511011 	.tsu		= 1,
1052
-	.hw_checksum	= 1,
1012
+	.csmr		= 1,
1013
+	.rx_csum	= 1,
10531014 	.select_mii	= 1,
10541015 	.magic		= 1,
10551016 	.cexcr		= 1,
....@@ -1083,6 +1044,7 @@
10831044 	.apr		= 1,
10841045 	.mpr		= 1,
10851046 	.tpauser	= 1,
1047
+	.gecmr		= 1,
10861048 	.bculr		= 1,
10871049 	.hw_swap	= 1,
10881050 	.no_trimd	= 1,
....@@ -1092,6 +1054,7 @@
10921054 	.irq_flags	= IRQF_SHARED,
10931055 	.magic		= 1,
10941056 	.cexcr		= 1,
1057
+	.rx_csum	= 1,
10951058 	.dual_port	= 1,
10961059 };
10971060 
....@@ -1256,7 +1219,7 @@
12561219 }
12571220 
12581221 /* mdio bus control struct */
1259
-static struct mdiobb_ops bb_ops = {
1222
+static const struct mdiobb_ops bb_ops = {
12601223 	.owner = THIS_MODULE,
12611224 	.set_mdc = sh_mdc_ctrl,
12621225 	.set_mdio_dir = sh_mmd_ctrl,
....@@ -1539,8 +1502,9 @@
15391502 	mdp->irq_enabled = true;
15401503 	sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
15411504 
1542
-	/* PAUSE Prohibition */
1505
+	/* EMAC Mode: PAUSE prohibition; Duplex; RX Checksum; TX; RX */
15431506 	sh_eth_write(ndev, ECMR_ZPF | (mdp->duplex ? ECMR_DM : 0) |
1507
+		     (ndev->features & NETIF_F_RXCSUM ? ECMR_RCSC : 0) |
15441508 		     ECMR_TE | ECMR_RE, ECMR);
15451509 
15461510 	if (mdp->cd->set_rate)
....@@ -1603,6 +1567,19 @@
16031567 	update_mac_address(ndev);
16041568 }
16051569 
1570
+static void sh_eth_rx_csum(struct sk_buff *skb)
1571
+{
1572
+	u8 *hw_csum;
1573
+
1574
+	/* The hardware checksum is 2 bytes appended to packet data */
1575
+	if (unlikely(skb->len < sizeof(__sum16)))
1576
+		return;
1577
+	hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
1578
+	skb->csum = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
1579
+	skb->ip_summed = CHECKSUM_COMPLETE;
1580
+	skb_trim(skb, skb->len - sizeof(__sum16));
1581
+}
1582
+
16061583 /* Packet receive function */
16071584 static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
16081585 {
....@@ -1644,7 +1621,7 @@
16441621 		 * the RFS bits are from bit 25 to bit 16. So, the
16451622 		 * driver needs right shifting by 16.
16461623 		 */
1647
-		if (mdp->cd->hw_checksum)
1624
+		if (mdp->cd->csmr)
16481625 			desc_status >>= 16;
16491626 
16501627 		skb = mdp->rx_skbuff[entry];
....@@ -1677,6 +1654,8 @@
16771654 					 DMA_FROM_DEVICE);
16781655 			skb_put(skb, pkt_len);
16791656 			skb->protocol = eth_type_trans(skb, ndev);
1657
+			if (ndev->features & NETIF_F_RXCSUM)
1658
+				sh_eth_rx_csum(skb);
16801659 			netif_receive_skb(skb);
16811660 			ndev->stats.rx_packets++;
16821661 			ndev->stats.rx_bytes += pkt_len;
....@@ -2000,7 +1979,6 @@
20001979 	if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
20011980 		sh_eth_rcv_snd_enable(ndev);
20021981 
2003
-	mmiowb();
20041982 	spin_unlock_irqrestore(&mdp->lock, flags);
20051983 
20061984 	if (new_state && netif_msg_link(mdp))
....@@ -2127,11 +2105,13 @@
21272105 	add_reg(EESR);
21282106 	add_reg(EESIPR);
21292107 	add_reg(TDLAR);
2130
-	add_reg(TDFAR);
2108
+	if (!cd->no_xdfar)
2109
+		add_reg(TDFAR);
21312110 	add_reg(TDFXR);
21322111 	add_reg(TDFFR);
21332112 	add_reg(RDLAR);
2134
-	add_reg(RDFAR);
2113
+	if (!cd->no_xdfar)
2114
+		add_reg(RDFAR);
21352115 	add_reg(RDFXR);
21362116 	add_reg(RDFFR);
21372117 	add_reg(TRSCER);
....@@ -2166,25 +2146,30 @@
21662146 	if (cd->tpauser)
21672147 		add_reg(TPAUSER);
21682148 	add_reg(TPAUSECR);
2169
-	add_reg(GECMR);
2149
+	if (cd->gecmr)
2150
+		add_reg(GECMR);
21702151 	if (cd->bculr)
21712152 		add_reg(BCULR);
21722153 	add_reg(MAHR);
21732154 	add_reg(MALR);
2174
-	add_reg(TROCR);
2175
-	add_reg(CDCR);
2176
-	add_reg(LCCR);
2177
-	add_reg(CNDCR);
2155
+	if (!cd->no_tx_cntrs) {
2156
+		add_reg(TROCR);
2157
+		add_reg(CDCR);
2158
+		add_reg(LCCR);
2159
+		add_reg(CNDCR);
2160
+	}
21782161 	add_reg(CEFCR);
21792162 	add_reg(FRECR);
21802163 	add_reg(TSFRCR);
21812164 	add_reg(TLFRCR);
2182
-	add_reg(CERCR);
2183
-	add_reg(CEECR);
2165
+	if (cd->cexcr) {
2166
+		add_reg(CERCR);
2167
+		add_reg(CEECR);
2168
+	}
21842169 	add_reg(MAFCR);
21852170 	if (cd->rtrate)
21862171 		add_reg(RTRATE);
2187
-	if (cd->hw_checksum)
2172
+	if (cd->csmr)
21882173 		add_reg(CSMR);
21892174 	if (cd->select_mii)
21902175 		add_reg(RMII_MII);
....@@ -2469,7 +2454,7 @@
24692454 }
24702455 
24712456 /* Timeout function */
2472
-static void sh_eth_tx_timeout(struct net_device *ndev)
2457
+static void sh_eth_tx_timeout(struct net_device *ndev, unsigned int txqueue)
24732458 {
24742459 	struct sh_eth_private *mdp = netdev_priv(ndev);
24752460 	struct sh_eth_rxdesc *rxdesc;
....@@ -2504,7 +2489,8 @@
25042489 }
25052490 
25062491 /* Packet transmit function */
2507
-static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
2492
+static netdev_tx_t sh_eth_start_xmit(struct sk_buff *skb,
2493
+				     struct net_device *ndev)
25082494 {
25092495 	struct sh_eth_private *mdp = netdev_priv(ndev);
25102496 	struct sh_eth_txdesc *txdesc;
....@@ -2633,20 +2619,6 @@
26332619 	pm_runtime_put(&mdp->pdev->dev);
26342620 
26352621 	return 0;
2636
-}
2637
-
2638
-/* ioctl to device function */
2639
-static int sh_eth_do_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
2640
-{
2641
-	struct phy_device *phydev = ndev->phydev;
2642
-
2643
-	if (!netif_running(ndev))
2644
-		return -EINVAL;
2645
-
2646
-	if (!phydev)
2647
-		return -ENODEV;
2648
-
2649
-	return phy_mii_ioctl(phydev, rq, cmd);
26502622 }
26512623 
26522624 static int sh_eth_change_mtu(struct net_device *ndev, int new_mtu)
....@@ -2937,6 +2909,39 @@
29372909 	spin_unlock_irqrestore(&mdp->lock, flags);
29382910 }
29392911 
2912
+static void sh_eth_set_rx_csum(struct net_device *ndev, bool enable)
2913
+{
2914
+	struct sh_eth_private *mdp = netdev_priv(ndev);
2915
+	unsigned long flags;
2916
+
2917
+	spin_lock_irqsave(&mdp->lock, flags);
2918
+
2919
+	/* Disable TX and RX */
2920
+	sh_eth_rcv_snd_disable(ndev);
2921
+
2922
+	/* Modify RX Checksum setting */
2923
+	sh_eth_modify(ndev, ECMR, ECMR_RCSC, enable ? ECMR_RCSC : 0);
2924
+
2925
+	/* Enable TX and RX */
2926
+	sh_eth_rcv_snd_enable(ndev);
2927
+
2928
+	spin_unlock_irqrestore(&mdp->lock, flags);
2929
+}
2930
+
2931
+static int sh_eth_set_features(struct net_device *ndev,
2932
+			       netdev_features_t features)
2933
+{
2934
+	netdev_features_t changed = ndev->features ^ features;
2935
+	struct sh_eth_private *mdp = netdev_priv(ndev);
2936
+
2937
+	if (changed & NETIF_F_RXCSUM && mdp->cd->rx_csum)
2938
+		sh_eth_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
2939
+
2940
+	ndev->features = features;
2941
+
2942
+	return 0;
2943
+}
2944
+
29402945 static int sh_eth_get_vtag_index(struct sh_eth_private *mdp)
29412946 {
29422947 	if (!mdp->port)
....@@ -3090,9 +3095,6 @@
30903095 	case SH_ETH_REG_GIGABIT:
30913096 		reg_offset = sh_eth_offset_gigabit;
30923097 		break;
3093
-	case SH_ETH_REG_FAST_RZ:
3094
-		reg_offset = sh_eth_offset_fast_rz;
3095
-		break;
30963098 	case SH_ETH_REG_FAST_RCAR:
30973099 		reg_offset = sh_eth_offset_fast_rcar;
30983100 		break;
....@@ -3114,10 +3116,11 @@
31143116 	.ndo_get_stats		= sh_eth_get_stats,
31153117 	.ndo_set_rx_mode	= sh_eth_set_rx_mode,
31163118 	.ndo_tx_timeout		= sh_eth_tx_timeout,
3117
-	.ndo_do_ioctl		= sh_eth_do_ioctl,
3119
+	.ndo_do_ioctl		= phy_do_ioctl_running,
31183120 	.ndo_change_mtu		= sh_eth_change_mtu,
31193121 	.ndo_validate_addr	= eth_validate_addr,
31203122 	.ndo_set_mac_address	= eth_mac_addr,
3123
+	.ndo_set_features	= sh_eth_set_features,
31213124 };
31223125 
31233126 static const struct net_device_ops sh_eth_netdev_ops_tsu = {
....@@ -3129,10 +3132,11 @@
31293132 	.ndo_vlan_rx_add_vid	= sh_eth_vlan_rx_add_vid,
31303133 	.ndo_vlan_rx_kill_vid	= sh_eth_vlan_rx_kill_vid,
31313134 	.ndo_tx_timeout		= sh_eth_tx_timeout,
3132
-	.ndo_do_ioctl		= sh_eth_do_ioctl,
3135
+	.ndo_do_ioctl		= phy_do_ioctl_running,
31333136 	.ndo_change_mtu		= sh_eth_change_mtu,
31343137 	.ndo_validate_addr	= eth_validate_addr,
31353138 	.ndo_set_mac_address	= eth_mac_addr,
3139
+	.ndo_set_features	= sh_eth_set_features,
31363140 };
31373141 
31383142 #ifdef CONFIG_OF
....@@ -3140,6 +3144,7 @@
31403144 {
31413145 	struct device_node *np = dev->of_node;
31423146 	struct sh_eth_plat_data *pdata;
3147
+	phy_interface_t interface;
31433148 	const char *mac_addr;
31443149 	int ret;
31453150 
....@@ -3147,14 +3152,14 @@
31473152 	if (!pdata)
31483153 		return NULL;
31493154 
3150
-	ret = of_get_phy_mode(np);
3151
-	if (ret < 0)
3155
+	ret = of_get_phy_mode(np, &interface);
3156
+	if (ret)
31523157 		return NULL;
3153
-	pdata->phy_interface = ret;
3158
+	pdata->phy_interface = interface;
31543159 
31553160 	mac_addr = of_get_mac_address(np);
3156
-	if (mac_addr)
3157
-		memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
3161
+	if (!IS_ERR(mac_addr))
3162
+		ether_addr_copy(pdata->mac_addr, mac_addr);
31583163 
31593164 	pdata->no_ether_link =
31603165 		of_property_read_bool(np, "renesas,no-ether-link");
....@@ -3265,6 +3270,11 @@
32653270 	ndev->max_mtu = 2000 - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
32663271 	ndev->min_mtu = ETH_MIN_MTU;
32673272 
3273
+	if (mdp->cd->rx_csum) {
3274
+		ndev->features = NETIF_F_RXCSUM;
3275
+		ndev->hw_features = NETIF_F_RXCSUM;
3276
+	}
3277
+
32683278 	/* set function */
32693279 	if (mdp->cd->tsu)
32703280 		ndev->netdev_ops = &sh_eth_netdev_ops_tsu;
....@@ -3314,7 +3324,7 @@
33143324 			goto out_release;
33153325 		}
33163326 		mdp->port = port;
3317
-		ndev->features = NETIF_F_HW_VLAN_CTAG_FILTER;
3327
+		ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
33183328 
33193329 		/* Need to init only the first port of the two sharing a TSU */
33203330 		if (port == 0) {