forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/net/ethernet/i825xx/lib82596.c
....@@ -351,7 +351,7 @@
351351 static irqreturn_t i596_interrupt(int irq, void *dev_id);
352352 static int i596_close(struct net_device *dev);
353353 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
354
-static void i596_tx_timeout (struct net_device *dev);
354
+static void i596_tx_timeout (struct net_device *dev, unsigned int txqueue);
355355 static void print_eth(unsigned char *buf, char *str);
356356 static void set_multicast_list(struct net_device *dev);
357357 static inline void ca(struct net_device *dev);
....@@ -365,13 +365,44 @@
365365 static void i596_poll_controller(struct net_device *dev);
366366 #endif
367367 
368
+static inline dma_addr_t virt_to_dma(struct i596_private *lp, volatile void *v)
369
+{
370
+	return lp->dma_addr + ((unsigned long)v - (unsigned long)lp->dma);
371
+}
372
+
373
+#ifdef NONCOHERENT_DMA
374
+static inline void dma_sync_dev(struct net_device *ndev, volatile void *addr,
375
+		size_t len)
376
+{
377
+	dma_sync_single_for_device(ndev->dev.parent,
378
+			virt_to_dma(netdev_priv(ndev), addr), len,
379
+			DMA_BIDIRECTIONAL);
380
+}
381
+
382
+static inline void dma_sync_cpu(struct net_device *ndev, volatile void *addr,
383
+		size_t len)
384
+{
385
+	dma_sync_single_for_cpu(ndev->dev.parent,
386
+			virt_to_dma(netdev_priv(ndev), addr), len,
387
+			DMA_BIDIRECTIONAL);
388
+}
389
+#else
390
+static inline void dma_sync_dev(struct net_device *ndev, volatile void *addr,
391
+		size_t len)
392
+{
393
+}
394
+static inline void dma_sync_cpu(struct net_device *ndev, volatile void *addr,
395
+		size_t len)
396
+{
397
+}
398
+#endif /* NONCOHERENT_DMA */
368399 
369400 static inline int wait_istat(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
370401 {
371
-	DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
402
+	dma_sync_cpu(dev, &(dma->iscp), sizeof(struct i596_iscp));
372403 	while (--delcnt && dma->iscp.stat) {
373404 		udelay(10);
374
-		DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
405
+		dma_sync_cpu(dev, &(dma->iscp), sizeof(struct i596_iscp));
375406 	}
376407 	if (!delcnt) {
377408 		printk(KERN_ERR "%s: %s, iscp.stat %04x, didn't clear\n",
....@@ -384,10 +415,10 @@
384415 
385416 static inline int wait_cmd(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
386417 {
387
-	DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
418
+	dma_sync_cpu(dev, &(dma->scb), sizeof(struct i596_scb));
388419 	while (--delcnt && dma->scb.command) {
389420 		udelay(10);
390
-		DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
421
+		dma_sync_cpu(dev, &(dma->scb), sizeof(struct i596_scb));
391422 	}
392423 	if (!delcnt) {
393424 		printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
....@@ -451,11 +482,8 @@
451482 		       SWAP32(rbd->b_data), SWAP16(rbd->size));
452483 		rbd = rbd->v_next;
453484 	} while (rbd != lp->rbd_head);
454
-	DMA_INV(dev, dma, sizeof(struct i596_dma));
485
+	dma_sync_cpu(dev, dma, sizeof(struct i596_dma));
455486 }
456
-
457
-
458
-#define virt_to_dma(lp, v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)((lp)->dma)))
459487 
460488 static inline int init_rx_bufs(struct net_device *dev)
461489 {
....@@ -508,7 +536,7 @@
508536 	rfd->b_next = SWAP32(virt_to_dma(lp, dma->rfds));
509537 	rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
510538 
511
-	DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
539
+	dma_sync_dev(dev, dma, sizeof(struct i596_dma));
512540 	return 0;
513541 }
514542 
....@@ -547,7 +575,7 @@
547575 	lp->rbd_head = dma->rbds;
548576 	dma->rfds[0].rbd = SWAP32(virt_to_dma(lp, dma->rbds));
549577 
550
-	DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
578
+	dma_sync_dev(dev, dma, sizeof(struct i596_dma));
551579 }
552580 
553581 
....@@ -575,9 +603,9 @@
575603 
576604 	DEB(DEB_INIT, printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
577605 
578
-	DMA_WBACK(dev, &(dma->scp), sizeof(struct i596_scp));
579
-	DMA_WBACK(dev, &(dma->iscp), sizeof(struct i596_iscp));
580
-	DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
606
+	dma_sync_dev(dev, &(dma->scp), sizeof(struct i596_scp));
607
+	dma_sync_dev(dev, &(dma->iscp), sizeof(struct i596_iscp));
608
+	dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
581609 
582610 	mpu_port(dev, PORT_ALTSCP, virt_to_dma(lp, &dma->scp));
583611 	ca(dev);
....@@ -596,24 +624,24 @@
596624 	rebuild_rx_bufs(dev);
597625 
598626 	dma->scb.command = 0;
599
-	DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
627
+	dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
600628 
601629 	DEB(DEB_INIT, printk(KERN_DEBUG
602630 			     "%s: queuing CmdConfigure\n", dev->name));
603631 	memcpy(dma->cf_cmd.i596_config, init_setup, 14);
604632 	dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
605
-	DMA_WBACK(dev, &(dma->cf_cmd), sizeof(struct cf_cmd));
633
+	dma_sync_dev(dev, &(dma->cf_cmd), sizeof(struct cf_cmd));
606634 	i596_add_cmd(dev, &dma->cf_cmd.cmd);
607635 
608636 	DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
609637 	memcpy(dma->sa_cmd.eth_addr, dev->dev_addr, ETH_ALEN);
610638 	dma->sa_cmd.cmd.command = SWAP16(CmdSASetup);
611
-	DMA_WBACK(dev, &(dma->sa_cmd), sizeof(struct sa_cmd));
639
+	dma_sync_dev(dev, &(dma->sa_cmd), sizeof(struct sa_cmd));
612640 	i596_add_cmd(dev, &dma->sa_cmd.cmd);
613641 
614642 	DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
615643 	dma->tdr_cmd.cmd.command = SWAP16(CmdTDR);
616
-	DMA_WBACK(dev, &(dma->tdr_cmd), sizeof(struct tdr_cmd));
644
+	dma_sync_dev(dev, &(dma->tdr_cmd), sizeof(struct tdr_cmd));
617645 	i596_add_cmd(dev, &dma->tdr_cmd.cmd);
618646 
619647 	spin_lock_irqsave (&lp->lock, flags);
....@@ -625,7 +653,7 @@
625653 	DEB(DEB_INIT, printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
626654 	dma->scb.command = SWAP16(RX_START);
627655 	dma->scb.rfd = SWAP32(virt_to_dma(lp, dma->rfds));
628
-	DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
656
+	dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
629657 
630658 	ca(dev);
631659 
....@@ -659,13 +687,13 @@
659687 
660688 	rfd = lp->rfd_head;		/* Ref next frame to check */
661689 
662
-	DMA_INV(dev, rfd, sizeof(struct i596_rfd));
690
+	dma_sync_cpu(dev, rfd, sizeof(struct i596_rfd));
663691 	while (rfd->stat & SWAP16(STAT_C)) {	/* Loop while complete frames */
664692 		if (rfd->rbd == I596_NULL)
665693 			rbd = NULL;
666694 		else if (rfd->rbd == lp->rbd_head->b_addr) {
667695 			rbd = lp->rbd_head;
668
-			DMA_INV(dev, rbd, sizeof(struct i596_rbd));
696
+			dma_sync_cpu(dev, rbd, sizeof(struct i596_rbd));
669697 		} else {
670698 			printk(KERN_ERR "%s: rbd chain broken!\n", dev->name);
671699 			/* XXX Now what? */
....@@ -713,7 +741,7 @@
713741 							  DMA_FROM_DEVICE);
714742 				rbd->v_data = newskb->data;
715743 				rbd->b_data = SWAP32(dma_addr);
716
-				DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
744
+				dma_sync_dev(dev, rbd, sizeof(struct i596_rbd));
717745 			} else {
718746 				skb = netdev_alloc_skb_ip_align(dev, pkt_len);
719747 			}
....@@ -765,7 +793,7 @@
765793 		if (rbd != NULL && (rbd->count & SWAP16(0x4000))) {
766794 			rbd->count = 0;
767795 			lp->rbd_head = rbd->v_next;
768
-			DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
796
+			dma_sync_dev(dev, rbd, sizeof(struct i596_rbd));
769797 		}
770798 
771799 		/* Tidy the frame descriptor, marking it as end of list */
....@@ -779,14 +807,14 @@
779807 
780808 		lp->dma->scb.rfd = rfd->b_next;
781809 		lp->rfd_head = rfd->v_next;
782
-		DMA_WBACK_INV(dev, rfd, sizeof(struct i596_rfd));
810
+		dma_sync_dev(dev, rfd, sizeof(struct i596_rfd));
783811 
784812 		/* Remove end-of-list from old end descriptor */
785813 
786814 		rfd->v_prev->cmd = SWAP16(CMD_FLEX);
787
-		DMA_WBACK_INV(dev, rfd->v_prev, sizeof(struct i596_rfd));
815
+		dma_sync_dev(dev, rfd->v_prev, sizeof(struct i596_rfd));
788816 		rfd = lp->rfd_head;
789
-		DMA_INV(dev, rfd, sizeof(struct i596_rfd));
817
+		dma_sync_cpu(dev, rfd, sizeof(struct i596_rfd));
790818 	}
791819 
792820 	DEB(DEB_RXFRAME, printk(KERN_DEBUG "frames %d\n", frames));
....@@ -827,12 +855,12 @@
827855 			ptr->v_next = NULL;
828856 			ptr->b_next = I596_NULL;
829857 		}
830
-		DMA_WBACK_INV(dev, ptr, sizeof(struct i596_cmd));
858
+		dma_sync_dev(dev, ptr, sizeof(struct i596_cmd));
831859 	}
832860 
833861 	wait_cmd(dev, lp->dma, 100, "i596_cleanup_cmd timed out");
834862 	lp->dma->scb.cmd = I596_NULL;
835
-	DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
863
+	dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
836864 }
837865 
838866 
....@@ -850,7 +878,7 @@
850878 
851879 	/* FIXME: this command might cause an lpmc */
852880 	lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
853
-	DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
881
+	dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
854882 	ca(dev);
855883 
856884 	/* wait for shutdown */
....@@ -878,20 +906,20 @@
878906 	cmd->command |= SWAP16(CMD_EOL | CMD_INTR);
879907 	cmd->v_next = NULL;
880908 	cmd->b_next = I596_NULL;
881
-	DMA_WBACK(dev, cmd, sizeof(struct i596_cmd));
909
+	dma_sync_dev(dev, cmd, sizeof(struct i596_cmd));
882910 
883911 	spin_lock_irqsave (&lp->lock, flags);
884912 
885913 	if (lp->cmd_head != NULL) {
886914 		lp->cmd_tail->v_next = cmd;
887915 		lp->cmd_tail->b_next = SWAP32(virt_to_dma(lp, &cmd->status));
888
-		DMA_WBACK(dev, lp->cmd_tail, sizeof(struct i596_cmd));
916
+		dma_sync_dev(dev, lp->cmd_tail, sizeof(struct i596_cmd));
889917 	} else {
890918 		lp->cmd_head = cmd;
891919 		wait_cmd(dev, dma, 100, "i596_add_cmd timed out");
892920 		dma->scb.cmd = SWAP32(virt_to_dma(lp, &cmd->status));
893921 		dma->scb.command = SWAP16(CUC_START);
894
-		DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
922
+		dma_sync_dev(dev, &(dma->scb), sizeof(struct i596_scb));
895923 		ca(dev);
896924 	}
897925 	lp->cmd_tail = cmd;
....@@ -936,7 +964,7 @@
936964 	return -EAGAIN;
937965 }
938966 
939
-static void i596_tx_timeout (struct net_device *dev)
967
+static void i596_tx_timeout (struct net_device *dev, unsigned int txqueue)
940968 {
941969 	struct i596_private *lp = netdev_priv(dev);
942970 
....@@ -956,7 +984,7 @@
956984 		/* Issue a channel attention signal */
957985 		DEB(DEB_ERRORS, printk(KERN_DEBUG "Kicking board.\n"));
958986 		lp->dma->scb.command = SWAP16(CUC_START | RX_START);
959
-		DMA_WBACK_INV(dev, &(lp->dma->scb), sizeof(struct i596_scb));
987
+		dma_sync_dev(dev, &(lp->dma->scb), sizeof(struct i596_scb));
960988 		ca (dev);
961989 		lp->last_restart = dev->stats.tx_packets;
962990 	}
....@@ -1014,8 +1042,8 @@
10141042 		tbd->data = SWAP32(tx_cmd->dma_addr);
10151043 
10161044 		DEB(DEB_TXADDR, print_eth(skb->data, "tx-queued"));
1017
-		DMA_WBACK_INV(dev, tx_cmd, sizeof(struct tx_cmd));
1018
-		DMA_WBACK_INV(dev, tbd, sizeof(struct i596_tbd));
1045
+		dma_sync_dev(dev, tx_cmd, sizeof(struct tx_cmd));
1046
+		dma_sync_dev(dev, tbd, sizeof(struct i596_tbd));
10191047 		i596_add_cmd(dev, &tx_cmd->cmd);
10201048 
10211049 		dev->stats.tx_packets++;
....@@ -1047,9 +1075,8 @@
10471075 
10481076 static int i82596_probe(struct net_device *dev)
10491077 {
1050
-	int i;
10511078 	struct i596_private *lp = netdev_priv(dev);
1052
-	struct i596_dma *dma;
1079
+	int ret;
10531080 
10541081 	/* This lot is ensure things have been cache line aligned. */
10551082 	BUILD_BUG_ON(sizeof(struct i596_rfd) != 32);
....@@ -1063,41 +1090,28 @@
10631090 	if (!dev->base_addr || !dev->irq)
10641091 		return -ENODEV;
10651092 
1066
-	dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma),
1067
-			      &lp->dma_addr, GFP_KERNEL,
1068
-			      LIB82596_DMA_ATTR);
1069
-	if (!dma) {
1070
-		printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
1071
-		return -ENOMEM;
1072
-	}
1073
-
10741093 	dev->netdev_ops = &i596_netdev_ops;
10751094 	dev->watchdog_timeo = TX_TIMEOUT;
10761095 
1077
-	memset(dma, 0, sizeof(struct i596_dma));
1078
-	lp->dma = dma;
1079
-
1080
-	dma->scb.command = 0;
1081
-	dma->scb.cmd = I596_NULL;
1082
-	dma->scb.rfd = I596_NULL;
1096
+	memset(lp->dma, 0, sizeof(struct i596_dma));
1097
+	lp->dma->scb.command = 0;
1098
+	lp->dma->scb.cmd = I596_NULL;
1099
+	lp->dma->scb.rfd = I596_NULL;
10831100 	spin_lock_init(&lp->lock);
10841101 
1085
-	DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
1102
+	dma_sync_dev(dev, lp->dma, sizeof(struct i596_dma));
10861103 
1087
-	i = register_netdev(dev);
1088
-	if (i) {
1089
-		dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma),
1090
-			       dma, lp->dma_addr, LIB82596_DMA_ATTR);
1091
-		return i;
1092
-	}
1104
+	ret = register_netdev(dev);
1105
+	if (ret)
1106
+		return ret;
10931107 
10941108 	DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx, %pM IRQ %d.\n",
10951109 			      dev->name, dev->base_addr, dev->dev_addr,
10961110 			      dev->irq));
10971111 	DEB(DEB_INIT, printk(KERN_INFO
10981112 			     "%s: dma at 0x%p (%d bytes), lp->scb at 0x%p\n",
1099
-			     dev->name, dma, (int)sizeof(struct i596_dma),
1100
-			     &dma->scb));
1113
+			     dev->name, lp->dma, (int)sizeof(struct i596_dma),
1114
+			     &lp->dma->scb));
11011115 
11021116 	return 0;
11031117 }
....@@ -1155,7 +1169,7 @@
11551169 				   dev->name, status & 0x0700));
11561170 
11571171 		while (lp->cmd_head != NULL) {
1158
-			DMA_INV(dev, lp->cmd_head, sizeof(struct i596_cmd));
1172
+			dma_sync_cpu(dev, lp->cmd_head, sizeof(struct i596_cmd));
11591173 			if (!(lp->cmd_head->status & SWAP16(STAT_C)))
11601174 				break;
11611175 
....@@ -1194,7 +1208,7 @@
11941208 				dma_unmap_single(dev->dev.parent,
11951209 						 tx_cmd->dma_addr,
11961210 						 skb->len, DMA_TO_DEVICE);
1197
-				dev_kfree_skb_irq(skb);
1211
+				dev_consume_skb_irq(skb);
11981212 
11991213 				tx_cmd->cmd.command = 0; /* Mark free */
12001214 				break;
....@@ -1237,7 +1251,7 @@
12371251 			}
12381252 			ptr->v_next = NULL;
12391253 			ptr->b_next = I596_NULL;
1240
-			DMA_WBACK(dev, ptr, sizeof(struct i596_cmd));
1254
+			dma_sync_dev(dev, ptr, sizeof(struct i596_cmd));
12411255 			lp->last_cmd = jiffies;
12421256 		}
12431257 
....@@ -1251,13 +1265,13 @@
12511265 
12521266 			ptr->command &= SWAP16(0x1fff);
12531267 			ptr = ptr->v_next;
1254
-			DMA_WBACK_INV(dev, prev, sizeof(struct i596_cmd));
1268
+			dma_sync_dev(dev, prev, sizeof(struct i596_cmd));
12551269 		}
12561270 
12571271 		if (lp->cmd_head != NULL)
12581272 			ack_cmd |= CUC_START;
12591273 		dma->scb.cmd = SWAP32(virt_to_dma(lp, &lp->cmd_head->status));
1260
-		DMA_WBACK_INV(dev, &dma->scb, sizeof(struct i596_scb));
1274
+		dma_sync_dev(dev, &dma->scb, sizeof(struct i596_scb));
12611275 	}
12621276 	if ((status & 0x1000) || (status & 0x4000)) {
12631277 		if ((status & 0x4000))
....@@ -1282,7 +1296,7 @@
12821296 	}
12831297 	wait_cmd(dev, dma, 100, "i596 interrupt, timeout");
12841298 	dma->scb.command = SWAP16(ack_cmd);
1285
-	DMA_WBACK(dev, &dma->scb, sizeof(struct i596_scb));
1299
+	dma_sync_dev(dev, &dma->scb, sizeof(struct i596_scb));
12861300 
12871301 	/* DANGER: I suspect that some kind of interrupt
12881302 	 acknowledgement aside from acking the 82596 might be needed
....@@ -1313,7 +1327,7 @@
13131327 
13141328 	wait_cmd(dev, lp->dma, 100, "close1 timed out");
13151329 	lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
1316
-	DMA_WBACK(dev, &lp->dma->scb, sizeof(struct i596_scb));
1330
+	dma_sync_dev(dev, &lp->dma->scb, sizeof(struct i596_scb));
13171331 
13181332 	ca(dev);
13191333 
....@@ -1372,7 +1386,7 @@
13721386 			       dev->name);
13731387 		else {
13741388 			dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
1375
-			DMA_WBACK_INV(dev, &dma->cf_cmd, sizeof(struct cf_cmd));
1389
+			dma_sync_dev(dev, &dma->cf_cmd, sizeof(struct cf_cmd));
13761390 			i596_add_cmd(dev, &dma->cf_cmd.cmd);
13771391 		}
13781392 	}
....@@ -1404,7 +1418,7 @@
14041418 					   dev->name, cp));
14051419 			cp += ETH_ALEN;
14061420 		}
1407
-		DMA_WBACK_INV(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
1421
+		dma_sync_dev(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
14081422 		i596_add_cmd(dev, &cmd->cmd);
14091423 	}
14101424 }