1 // SPDX-License-Identifier: GPL-2.0+
8   (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.
15 			E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200
28 --------------------------------------
30        12/15/2003       Initial port to u-boot by
34 			- Fixed the driver to work with DM9000A.
38 			- Added autodetect of databus width.
39 			- Made debug code compile again.
40 			- Adapt eth_send such that it matches the DM9000*
43 			- Adapted reset procedure to match DM9000 application
45 			- some minor code cleanups
60 /* Board/System/Debug information/definition ---------------- */
66 #define DM9000_DMP_PACKET(func,packet,length)  \  argument
69 		printf("%s: length: %d\n", func, length);		\
70 		for (i = 0; i < length; i++) {				\
78 #define DM9000_DMP_PACKET(func,packet,length)  argument
81 /* Structure/enum declaration ------------------------------- */
83 	u32 runt_length_counter;	/* counter: RX length < 64byte */
84 	u32 long_length_counter;	/* counter: RX length > 1514byte */
102 /* function declaration ------------------------------------- */
109 /* DM9000 network board routine ---------------------------- */
240 		return -1;  in dm9000_probe()
276 		printf("ERROR: resetting DM9000 -> not responding\n");  in dm9000_reset()
293 		return -1;  in dm9000_init()
295 	/* Auto-detect 8/16/32 bit mode, ISR Bit 6+7 indicate bus width */  in dm9000_init()
299 	case 0x0:  /* 16-bit mode */  in dm9000_init()
301 		db->outblk    = dm9000_outblk_16bit;  in dm9000_init()
302 		db->inblk     = dm9000_inblk_16bit;  in dm9000_init()
303 		db->rx_status = dm9000_rx_status_16bit;  in dm9000_init()
305 	case 0x01:  /* 32-bit mode */  in dm9000_init()
307 		db->outblk    = dm9000_outblk_32bit;  in dm9000_init()
308 		db->inblk     = dm9000_inblk_32bit;  in dm9000_init()
309 		db->rx_status = dm9000_rx_status_32bit;  in dm9000_init()
313 		db->outblk    = dm9000_outblk_8bit;  in dm9000_init()
314 		db->inblk     = dm9000_inblk_8bit;  in dm9000_init()
315 		db->rx_status = dm9000_rx_status_8bit;  in dm9000_init()
319 		printf("DM9000: Undefined IO-mode:0x%x\n", io_mode);  in dm9000_init()
320 		db->outblk    = dm9000_outblk_8bit;  in dm9000_init()
321 		db->inblk     = dm9000_inblk_8bit;  in dm9000_init()
322 		db->rx_status = dm9000_rx_status_8bit;  in dm9000_init()
343 	printf("MAC: %pM\n", dev->enetaddr);  in dm9000_init()
344 	if (!is_valid_ethaddr(dev->enetaddr)) {  in dm9000_init()
350 		DM9000_iow(oft, dev->enetaddr[i]);  in dm9000_init()
380 		printf("10M half duplex ");  in dm9000_init()
386 		printf("100M half duplex ");  in dm9000_init()
403 static int dm9000_send(struct eth_device *netdev, void *packet, int length)  in dm9000_send()  argument
408 	DM9000_DMP_PACKET(__func__ , packet, length);  in dm9000_send()
413 	DM9000_outb(DM9000_MWCMD, DM9000_IO); /* Prepare for TX-data */  in dm9000_send()
415 	/* push the data to the TX-fifo */  in dm9000_send()
416 	(db->outblk)(packet, length);  in dm9000_send()
418 	/* Set TX length to DM9000 */  in dm9000_send()
419 	DM9000_iow(DM9000_TXPLL, length & 0xff);  in dm9000_send()
420 	DM9000_iow(DM9000_TXPLH, (length >> 8) & 0xff);  in dm9000_send()
450 	DM9000_iow(DM9000_GPR, 0x01);	/* Power-Down PHY */  in dm9000_halt()
467 	if (!(DM9000_ior(DM9000_ISR) & 0x01)) /* Rx-ISR bit must be set. */  in dm9000_rx()
494 		/* A packet ready now  & Get status/length */  in dm9000_rx()
495 		(db->rx_status)(&RxStatus, &RxLen);  in dm9000_rx()
501 		(db->inblk)(rdptr, RxLen);  in dm9000_rx()
512 				printf("rx length error\n");  in dm9000_rx()
515 				printf("rx length too big\n");  in dm9000_rx()
558 		dm9000_read_srom_word(i, dev->enetaddr + (2 * i));  in dm9000_get_enetaddr()
628 	dev->init = dm9000_init;  in dm9000_initialize()
629 	dev->halt = dm9000_halt;  in dm9000_initialize()
630 	dev->send = dm9000_send;  in dm9000_initialize()
631 	dev->recv = dm9000_rx;  in dm9000_initialize()
632 	strcpy(dev->name, "dm9000");  in dm9000_initialize()