109c434b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2b955f6caSJeff Kirsher /* $Id: sunlance.c,v 1.112 2002/01/15 06:48:55 davem Exp $ 3b955f6caSJeff Kirsher * lance.c: Linux/Sparc/Lance driver 4b955f6caSJeff Kirsher * 5b955f6caSJeff Kirsher * Written 1995, 1996 by Miguel de Icaza 6b955f6caSJeff Kirsher * Sources: 7b955f6caSJeff Kirsher * The Linux depca driver 8b955f6caSJeff Kirsher * The Linux lance driver. 9b955f6caSJeff Kirsher * The Linux skeleton driver. 10b955f6caSJeff Kirsher * The NetBSD Sparc/Lance driver. 11b955f6caSJeff Kirsher * Theo de Raadt (deraadt@openbsd.org) 12b955f6caSJeff Kirsher * NCR92C990 Lan Controller manual 13b955f6caSJeff Kirsher * 14b955f6caSJeff Kirsher * 1.4: 15b955f6caSJeff Kirsher * Added support to run with a ledma on the Sun4m 16b955f6caSJeff Kirsher * 17b955f6caSJeff Kirsher * 1.5: 18b955f6caSJeff Kirsher * Added multiple card detection. 19b955f6caSJeff Kirsher * 20b955f6caSJeff Kirsher * 4/17/96: Burst sizes and tpe selection on sun4m by Eddie C. Dost 21b955f6caSJeff Kirsher * (ecd@skynet.be) 22b955f6caSJeff Kirsher * 23b955f6caSJeff Kirsher * 5/15/96: auto carrier detection on sun4m by Eddie C. Dost 24b955f6caSJeff Kirsher * (ecd@skynet.be) 25b955f6caSJeff Kirsher * 26b955f6caSJeff Kirsher * 5/17/96: lebuffer on scsi/ether cards now work David S. Miller 27b955f6caSJeff Kirsher * (davem@caip.rutgers.edu) 28b955f6caSJeff Kirsher * 29b955f6caSJeff Kirsher * 5/29/96: override option 'tpe-link-test?', if it is 'false', as 30b955f6caSJeff Kirsher * this disables auto carrier detection on sun4m. Eddie C. Dost 31b955f6caSJeff Kirsher * (ecd@skynet.be) 32b955f6caSJeff Kirsher * 33b955f6caSJeff Kirsher * 1.7: 34b955f6caSJeff Kirsher * 6/26/96: Bug fix for multiple ledmas, miguel. 35b955f6caSJeff Kirsher * 36b955f6caSJeff Kirsher * 1.8: 37b955f6caSJeff Kirsher * Stole multicast code from depca.c, fixed lance_tx. 38b955f6caSJeff Kirsher * 39b955f6caSJeff Kirsher * 1.9: 40b955f6caSJeff Kirsher * 8/21/96: Fixed the multicast code (Pedro Roque) 41b955f6caSJeff Kirsher * 42b955f6caSJeff Kirsher * 8/28/96: Send fake packet in lance_open() if auto_select is true, 43b955f6caSJeff Kirsher * so we can detect the carrier loss condition in time. 44b955f6caSJeff Kirsher * Eddie C. Dost (ecd@skynet.be) 45b955f6caSJeff Kirsher * 46b955f6caSJeff Kirsher * 9/15/96: Align rx_buf so that eth_copy_and_sum() won't cause an 47b955f6caSJeff Kirsher * MNA trap during chksum_partial_copy(). (ecd@skynet.be) 48b955f6caSJeff Kirsher * 49b955f6caSJeff Kirsher * 11/17/96: Handle LE_C0_MERR in lance_interrupt(). (ecd@skynet.be) 50b955f6caSJeff Kirsher * 51b955f6caSJeff Kirsher * 12/22/96: Don't loop forever in lance_rx() on incomplete packets. 52b955f6caSJeff Kirsher * This was the sun4c killer. Shit, stupid bug. 53b955f6caSJeff Kirsher * (ecd@skynet.be) 54b955f6caSJeff Kirsher * 55b955f6caSJeff Kirsher * 1.10: 56b955f6caSJeff Kirsher * 1/26/97: Modularize driver. (ecd@skynet.be) 57b955f6caSJeff Kirsher * 58b955f6caSJeff Kirsher * 1.11: 59b955f6caSJeff Kirsher * 12/27/97: Added sun4d support. (jj@sunsite.mff.cuni.cz) 60b955f6caSJeff Kirsher * 61b955f6caSJeff Kirsher * 1.12: 62b955f6caSJeff Kirsher * 11/3/99: Fixed SMP race in lance_start_xmit found by davem. 63b955f6caSJeff Kirsher * Anton Blanchard (anton@progsoc.uts.edu.au) 64b955f6caSJeff Kirsher * 2.00: 11/9/99: Massive overhaul and port to new SBUS driver interfaces. 65b955f6caSJeff Kirsher * David S. Miller (davem@redhat.com) 66b955f6caSJeff Kirsher * 2.01: 67b955f6caSJeff Kirsher * 11/08/01: Use library crc32 functions (Matt_Domsch@dell.com) 68b955f6caSJeff Kirsher * 69b955f6caSJeff Kirsher */ 70b955f6caSJeff Kirsher 71b955f6caSJeff Kirsher #undef DEBUG_DRIVER 72b955f6caSJeff Kirsher 73b955f6caSJeff Kirsher static char lancestr[] = "LANCE"; 74b955f6caSJeff Kirsher 75b955f6caSJeff Kirsher #include <linux/module.h> 76b955f6caSJeff Kirsher #include <linux/kernel.h> 77b955f6caSJeff Kirsher #include <linux/types.h> 78b955f6caSJeff Kirsher #include <linux/fcntl.h> 79b955f6caSJeff Kirsher #include <linux/interrupt.h> 80b955f6caSJeff Kirsher #include <linux/ioport.h> 81b955f6caSJeff Kirsher #include <linux/in.h> 82b955f6caSJeff Kirsher #include <linux/string.h> 83b955f6caSJeff Kirsher #include <linux/delay.h> 84b955f6caSJeff Kirsher #include <linux/crc32.h> 85b955f6caSJeff Kirsher #include <linux/errno.h> 86b955f6caSJeff Kirsher #include <linux/socket.h> /* Used for the temporal inet entries and routing */ 87b955f6caSJeff Kirsher #include <linux/route.h> 88b955f6caSJeff Kirsher #include <linux/netdevice.h> 89b955f6caSJeff Kirsher #include <linux/etherdevice.h> 90b955f6caSJeff Kirsher #include <linux/skbuff.h> 91b955f6caSJeff Kirsher #include <linux/ethtool.h> 92b955f6caSJeff Kirsher #include <linux/bitops.h> 93b955f6caSJeff Kirsher #include <linux/dma-mapping.h> 94b955f6caSJeff Kirsher #include <linux/of.h> 95b955f6caSJeff Kirsher #include <linux/of_device.h> 96b955f6caSJeff Kirsher #include <linux/gfp.h> 9765fddcfcSMike Rapoport #include <linux/pgtable.h> 98b955f6caSJeff Kirsher 99b955f6caSJeff Kirsher #include <asm/io.h> 100b955f6caSJeff Kirsher #include <asm/dma.h> 101b955f6caSJeff Kirsher #include <asm/byteorder.h> /* Used by the checksum routines */ 102b955f6caSJeff Kirsher #include <asm/idprom.h> 103b955f6caSJeff Kirsher #include <asm/prom.h> 104b955f6caSJeff Kirsher #include <asm/auxio.h> /* For tpe-link-test? setting */ 105b955f6caSJeff Kirsher #include <asm/irq.h> 106b955f6caSJeff Kirsher 107b955f6caSJeff Kirsher #define DRV_NAME "sunlance" 108b955f6caSJeff Kirsher #define DRV_RELDATE "8/24/03" 109b955f6caSJeff Kirsher #define DRV_AUTHOR "Miguel de Icaza (miguel@nuclecu.unam.mx)" 110b955f6caSJeff Kirsher 111b955f6caSJeff Kirsher MODULE_AUTHOR(DRV_AUTHOR); 112b955f6caSJeff Kirsher MODULE_DESCRIPTION("Sun Lance ethernet driver"); 113b955f6caSJeff Kirsher MODULE_LICENSE("GPL"); 114b955f6caSJeff Kirsher 115b955f6caSJeff Kirsher /* Define: 2^4 Tx buffers and 2^4 Rx buffers */ 116b955f6caSJeff Kirsher #ifndef LANCE_LOG_TX_BUFFERS 117b955f6caSJeff Kirsher #define LANCE_LOG_TX_BUFFERS 4 118b955f6caSJeff Kirsher #define LANCE_LOG_RX_BUFFERS 4 119b955f6caSJeff Kirsher #endif 120b955f6caSJeff Kirsher 121b955f6caSJeff Kirsher #define LE_CSR0 0 122b955f6caSJeff Kirsher #define LE_CSR1 1 123b955f6caSJeff Kirsher #define LE_CSR2 2 124b955f6caSJeff Kirsher #define LE_CSR3 3 125b955f6caSJeff Kirsher 126b955f6caSJeff Kirsher #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ 127b955f6caSJeff Kirsher 128b955f6caSJeff Kirsher #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ 129b955f6caSJeff Kirsher #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ 130b955f6caSJeff Kirsher #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ 131b955f6caSJeff Kirsher #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ 132b955f6caSJeff Kirsher #define LE_C0_MERR 0x0800 /* ME: Memory error */ 133b955f6caSJeff Kirsher #define LE_C0_RINT 0x0400 /* Received interrupt */ 134b955f6caSJeff Kirsher #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ 135b955f6caSJeff Kirsher #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ 136b955f6caSJeff Kirsher #define LE_C0_INTR 0x0080 /* Interrupt or error */ 137b955f6caSJeff Kirsher #define LE_C0_INEA 0x0040 /* Interrupt enable */ 138b955f6caSJeff Kirsher #define LE_C0_RXON 0x0020 /* Receiver on */ 139b955f6caSJeff Kirsher #define LE_C0_TXON 0x0010 /* Transmitter on */ 140b955f6caSJeff Kirsher #define LE_C0_TDMD 0x0008 /* Transmitter demand */ 141b955f6caSJeff Kirsher #define LE_C0_STOP 0x0004 /* Stop the card */ 142b955f6caSJeff Kirsher #define LE_C0_STRT 0x0002 /* Start the card */ 143b955f6caSJeff Kirsher #define LE_C0_INIT 0x0001 /* Init the card */ 144b955f6caSJeff Kirsher 145b955f6caSJeff Kirsher #define LE_C3_BSWP 0x4 /* SWAP */ 146b955f6caSJeff Kirsher #define LE_C3_ACON 0x2 /* ALE Control */ 147b955f6caSJeff Kirsher #define LE_C3_BCON 0x1 /* Byte control */ 148b955f6caSJeff Kirsher 149b955f6caSJeff Kirsher /* Receive message descriptor 1 */ 150b955f6caSJeff Kirsher #define LE_R1_OWN 0x80 /* Who owns the entry */ 151b955f6caSJeff Kirsher #define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */ 152b955f6caSJeff Kirsher #define LE_R1_FRA 0x20 /* FRA: Frame error */ 153b955f6caSJeff Kirsher #define LE_R1_OFL 0x10 /* OFL: Frame overflow */ 154b955f6caSJeff Kirsher #define LE_R1_CRC 0x08 /* CRC error */ 155b955f6caSJeff Kirsher #define LE_R1_BUF 0x04 /* BUF: Buffer error */ 156b955f6caSJeff Kirsher #define LE_R1_SOP 0x02 /* Start of packet */ 157b955f6caSJeff Kirsher #define LE_R1_EOP 0x01 /* End of packet */ 158b955f6caSJeff Kirsher #define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ 159b955f6caSJeff Kirsher 160b955f6caSJeff Kirsher #define LE_T1_OWN 0x80 /* Lance owns the packet */ 161b955f6caSJeff Kirsher #define LE_T1_ERR 0x40 /* Error summary */ 162b955f6caSJeff Kirsher #define LE_T1_EMORE 0x10 /* Error: more than one retry needed */ 163b955f6caSJeff Kirsher #define LE_T1_EONE 0x08 /* Error: one retry needed */ 164b955f6caSJeff Kirsher #define LE_T1_EDEF 0x04 /* Error: deferred */ 165b955f6caSJeff Kirsher #define LE_T1_SOP 0x02 /* Start of packet */ 166b955f6caSJeff Kirsher #define LE_T1_EOP 0x01 /* End of packet */ 167b955f6caSJeff Kirsher #define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ 168b955f6caSJeff Kirsher 169b955f6caSJeff Kirsher #define LE_T3_BUF 0x8000 /* Buffer error */ 170b955f6caSJeff Kirsher #define LE_T3_UFL 0x4000 /* Error underflow */ 171b955f6caSJeff Kirsher #define LE_T3_LCOL 0x1000 /* Error late collision */ 172b955f6caSJeff Kirsher #define LE_T3_CLOS 0x0800 /* Error carrier loss */ 173b955f6caSJeff Kirsher #define LE_T3_RTY 0x0400 /* Error retry */ 174b955f6caSJeff Kirsher #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ 175b955f6caSJeff Kirsher 176b955f6caSJeff Kirsher #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) 177b955f6caSJeff Kirsher #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) 178b955f6caSJeff Kirsher #define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) 179b955f6caSJeff Kirsher #define TX_NEXT(__x) (((__x)+1) & TX_RING_MOD_MASK) 180b955f6caSJeff Kirsher 181b955f6caSJeff Kirsher #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) 182b955f6caSJeff Kirsher #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) 183b955f6caSJeff Kirsher #define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) 184b955f6caSJeff Kirsher #define RX_NEXT(__x) (((__x)+1) & RX_RING_MOD_MASK) 185b955f6caSJeff Kirsher 186b955f6caSJeff Kirsher #define PKT_BUF_SZ 1544 187b955f6caSJeff Kirsher #define RX_BUFF_SIZE PKT_BUF_SZ 188b955f6caSJeff Kirsher #define TX_BUFF_SIZE PKT_BUF_SZ 189b955f6caSJeff Kirsher 190b955f6caSJeff Kirsher struct lance_rx_desc { 191b955f6caSJeff Kirsher u16 rmd0; /* low address of packet */ 192b955f6caSJeff Kirsher u8 rmd1_bits; /* descriptor bits */ 193b955f6caSJeff Kirsher u8 rmd1_hadr; /* high address of packet */ 194b955f6caSJeff Kirsher s16 length; /* This length is 2s complement (negative)! 195b955f6caSJeff Kirsher * Buffer length 196b955f6caSJeff Kirsher */ 197b955f6caSJeff Kirsher u16 mblength; /* This is the actual number of bytes received */ 198b955f6caSJeff Kirsher }; 199b955f6caSJeff Kirsher 200b955f6caSJeff Kirsher struct lance_tx_desc { 201b955f6caSJeff Kirsher u16 tmd0; /* low address of packet */ 202b955f6caSJeff Kirsher u8 tmd1_bits; /* descriptor bits */ 203b955f6caSJeff Kirsher u8 tmd1_hadr; /* high address of packet */ 204b955f6caSJeff Kirsher s16 length; /* Length is 2s complement (negative)! */ 205b955f6caSJeff Kirsher u16 misc; 206b955f6caSJeff Kirsher }; 207b955f6caSJeff Kirsher 208b955f6caSJeff Kirsher /* The LANCE initialization block, described in databook. */ 209b955f6caSJeff Kirsher /* On the Sparc, this block should be on a DMA region */ 210b955f6caSJeff Kirsher struct lance_init_block { 211b955f6caSJeff Kirsher u16 mode; /* Pre-set mode (reg. 15) */ 212b955f6caSJeff Kirsher u8 phys_addr[6]; /* Physical ethernet address */ 213b955f6caSJeff Kirsher u32 filter[2]; /* Multicast filter. */ 214b955f6caSJeff Kirsher 215b955f6caSJeff Kirsher /* Receive and transmit ring base, along with extra bits. */ 216b955f6caSJeff Kirsher u16 rx_ptr; /* receive descriptor addr */ 217b955f6caSJeff Kirsher u16 rx_len; /* receive len and high addr */ 218b955f6caSJeff Kirsher u16 tx_ptr; /* transmit descriptor addr */ 219b955f6caSJeff Kirsher u16 tx_len; /* transmit len and high addr */ 220b955f6caSJeff Kirsher 221b955f6caSJeff Kirsher /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ 222b955f6caSJeff Kirsher struct lance_rx_desc brx_ring[RX_RING_SIZE]; 223b955f6caSJeff Kirsher struct lance_tx_desc btx_ring[TX_RING_SIZE]; 224b955f6caSJeff Kirsher 225b955f6caSJeff Kirsher u8 tx_buf [TX_RING_SIZE][TX_BUFF_SIZE]; 226b955f6caSJeff Kirsher u8 pad[2]; /* align rx_buf for copy_and_sum(). */ 227b955f6caSJeff Kirsher u8 rx_buf [RX_RING_SIZE][RX_BUFF_SIZE]; 228b955f6caSJeff Kirsher }; 229b955f6caSJeff Kirsher 230b955f6caSJeff Kirsher #define libdesc_offset(rt, elem) \ 231b955f6caSJeff Kirsher ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem]))))) 232b955f6caSJeff Kirsher 233b955f6caSJeff Kirsher #define libbuff_offset(rt, elem) \ 234b955f6caSJeff Kirsher ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem][0]))))) 235b955f6caSJeff Kirsher 236b955f6caSJeff Kirsher struct lance_private { 237b955f6caSJeff Kirsher void __iomem *lregs; /* Lance RAP/RDP regs. */ 238b955f6caSJeff Kirsher void __iomem *dregs; /* DMA controller regs. */ 239b955f6caSJeff Kirsher struct lance_init_block __iomem *init_block_iomem; 240b955f6caSJeff Kirsher struct lance_init_block *init_block_mem; 241b955f6caSJeff Kirsher 242b955f6caSJeff Kirsher spinlock_t lock; 243b955f6caSJeff Kirsher 244b955f6caSJeff Kirsher int rx_new, tx_new; 245b955f6caSJeff Kirsher int rx_old, tx_old; 246b955f6caSJeff Kirsher 247b955f6caSJeff Kirsher struct platform_device *ledma; /* If set this points to ledma */ 248b955f6caSJeff Kirsher char tpe; /* cable-selection is TPE */ 249b955f6caSJeff Kirsher char auto_select; /* cable-selection by carrier */ 250b955f6caSJeff Kirsher char burst_sizes; /* ledma SBus burst sizes */ 251b955f6caSJeff Kirsher char pio_buffer; /* init block in PIO space? */ 252b955f6caSJeff Kirsher 253b955f6caSJeff Kirsher unsigned short busmaster_regval; 254b955f6caSJeff Kirsher 255b955f6caSJeff Kirsher void (*init_ring)(struct net_device *); 256b955f6caSJeff Kirsher void (*rx)(struct net_device *); 257b955f6caSJeff Kirsher void (*tx)(struct net_device *); 258b955f6caSJeff Kirsher 259b955f6caSJeff Kirsher char *name; 260b955f6caSJeff Kirsher dma_addr_t init_block_dvma; 261b955f6caSJeff Kirsher struct net_device *dev; /* Backpointer */ 262b955f6caSJeff Kirsher struct platform_device *op; 263b955f6caSJeff Kirsher struct platform_device *lebuffer; 264b955f6caSJeff Kirsher struct timer_list multicast_timer; 265b955f6caSJeff Kirsher }; 266b955f6caSJeff Kirsher 267b955f6caSJeff Kirsher #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ 268b955f6caSJeff Kirsher lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ 269b955f6caSJeff Kirsher lp->tx_old - lp->tx_new-1) 270b955f6caSJeff Kirsher 271b955f6caSJeff Kirsher /* Lance registers. */ 272b955f6caSJeff Kirsher #define RDP 0x00UL /* register data port */ 273b955f6caSJeff Kirsher #define RAP 0x02UL /* register address port */ 274b955f6caSJeff Kirsher #define LANCE_REG_SIZE 0x04UL 275b955f6caSJeff Kirsher 276b955f6caSJeff Kirsher #define STOP_LANCE(__lp) \ 277b955f6caSJeff Kirsher do { void __iomem *__base = (__lp)->lregs; \ 278b955f6caSJeff Kirsher sbus_writew(LE_CSR0, __base + RAP); \ 279b955f6caSJeff Kirsher sbus_writew(LE_C0_STOP, __base + RDP); \ 280b955f6caSJeff Kirsher } while (0) 281b955f6caSJeff Kirsher 282b955f6caSJeff Kirsher int sparc_lance_debug = 2; 283b955f6caSJeff Kirsher 284b955f6caSJeff Kirsher /* The Lance uses 24 bit addresses */ 285b955f6caSJeff Kirsher /* On the Sun4c the DVMA will provide the remaining bytes for us */ 286b955f6caSJeff Kirsher /* On the Sun4m we have to instruct the ledma to provide them */ 287b955f6caSJeff Kirsher /* Even worse, on scsi/ether SBUS cards, the init block and the 288b955f6caSJeff Kirsher * transmit/receive buffers are addresses as offsets from absolute 289b955f6caSJeff Kirsher * zero on the lebuffer PIO area. -DaveM 290b955f6caSJeff Kirsher */ 291b955f6caSJeff Kirsher 292b955f6caSJeff Kirsher #define LANCE_ADDR(x) ((long)(x) & ~0xff000000) 293b955f6caSJeff Kirsher 294b955f6caSJeff Kirsher /* Load the CSR registers */ 295b955f6caSJeff Kirsher static void load_csrs(struct lance_private *lp) 296b955f6caSJeff Kirsher { 297b955f6caSJeff Kirsher u32 leptr; 298b955f6caSJeff Kirsher 299b955f6caSJeff Kirsher if (lp->pio_buffer) 300b955f6caSJeff Kirsher leptr = 0; 301b955f6caSJeff Kirsher else 302b955f6caSJeff Kirsher leptr = LANCE_ADDR(lp->init_block_dvma); 303b955f6caSJeff Kirsher 304b955f6caSJeff Kirsher sbus_writew(LE_CSR1, lp->lregs + RAP); 305b955f6caSJeff Kirsher sbus_writew(leptr & 0xffff, lp->lregs + RDP); 306b955f6caSJeff Kirsher sbus_writew(LE_CSR2, lp->lregs + RAP); 307b955f6caSJeff Kirsher sbus_writew(leptr >> 16, lp->lregs + RDP); 308b955f6caSJeff Kirsher sbus_writew(LE_CSR3, lp->lregs + RAP); 309b955f6caSJeff Kirsher sbus_writew(lp->busmaster_regval, lp->lregs + RDP); 310b955f6caSJeff Kirsher 311b955f6caSJeff Kirsher /* Point back to csr0 */ 312b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 313b955f6caSJeff Kirsher } 314b955f6caSJeff Kirsher 315b955f6caSJeff Kirsher /* Setup the Lance Rx and Tx rings */ 316b955f6caSJeff Kirsher static void lance_init_ring_dvma(struct net_device *dev) 317b955f6caSJeff Kirsher { 318b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 319b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 320b955f6caSJeff Kirsher dma_addr_t aib = lp->init_block_dvma; 321b955f6caSJeff Kirsher __u32 leptr; 322b955f6caSJeff Kirsher int i; 323b955f6caSJeff Kirsher 324b955f6caSJeff Kirsher /* Lock out other processes while setting up hardware */ 325b955f6caSJeff Kirsher netif_stop_queue(dev); 326b955f6caSJeff Kirsher lp->rx_new = lp->tx_new = 0; 327b955f6caSJeff Kirsher lp->rx_old = lp->tx_old = 0; 328b955f6caSJeff Kirsher 329b955f6caSJeff Kirsher /* Copy the ethernet address to the lance init block 330b955f6caSJeff Kirsher * Note that on the sparc you need to swap the ethernet address. 331b955f6caSJeff Kirsher */ 332b955f6caSJeff Kirsher ib->phys_addr [0] = dev->dev_addr [1]; 333b955f6caSJeff Kirsher ib->phys_addr [1] = dev->dev_addr [0]; 334b955f6caSJeff Kirsher ib->phys_addr [2] = dev->dev_addr [3]; 335b955f6caSJeff Kirsher ib->phys_addr [3] = dev->dev_addr [2]; 336b955f6caSJeff Kirsher ib->phys_addr [4] = dev->dev_addr [5]; 337b955f6caSJeff Kirsher ib->phys_addr [5] = dev->dev_addr [4]; 338b955f6caSJeff Kirsher 339b955f6caSJeff Kirsher /* Setup the Tx ring entries */ 340b955f6caSJeff Kirsher for (i = 0; i < TX_RING_SIZE; i++) { 341b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libbuff_offset(tx_buf, i)); 342b955f6caSJeff Kirsher ib->btx_ring [i].tmd0 = leptr; 343b955f6caSJeff Kirsher ib->btx_ring [i].tmd1_hadr = leptr >> 16; 344b955f6caSJeff Kirsher ib->btx_ring [i].tmd1_bits = 0; 345b955f6caSJeff Kirsher ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ 346b955f6caSJeff Kirsher ib->btx_ring [i].misc = 0; 347b955f6caSJeff Kirsher } 348b955f6caSJeff Kirsher 349b955f6caSJeff Kirsher /* Setup the Rx ring entries */ 350b955f6caSJeff Kirsher for (i = 0; i < RX_RING_SIZE; i++) { 351b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libbuff_offset(rx_buf, i)); 352b955f6caSJeff Kirsher 353b955f6caSJeff Kirsher ib->brx_ring [i].rmd0 = leptr; 354b955f6caSJeff Kirsher ib->brx_ring [i].rmd1_hadr = leptr >> 16; 355b955f6caSJeff Kirsher ib->brx_ring [i].rmd1_bits = LE_R1_OWN; 356b955f6caSJeff Kirsher ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; 357b955f6caSJeff Kirsher ib->brx_ring [i].mblength = 0; 358b955f6caSJeff Kirsher } 359b955f6caSJeff Kirsher 360b955f6caSJeff Kirsher /* Setup the initialization block */ 361b955f6caSJeff Kirsher 362b955f6caSJeff Kirsher /* Setup rx descriptor pointer */ 363b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libdesc_offset(brx_ring, 0)); 364b955f6caSJeff Kirsher ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16); 365b955f6caSJeff Kirsher ib->rx_ptr = leptr; 366b955f6caSJeff Kirsher 367b955f6caSJeff Kirsher /* Setup tx descriptor pointer */ 368b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libdesc_offset(btx_ring, 0)); 369b955f6caSJeff Kirsher ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16); 370b955f6caSJeff Kirsher ib->tx_ptr = leptr; 371b955f6caSJeff Kirsher } 372b955f6caSJeff Kirsher 373b955f6caSJeff Kirsher static void lance_init_ring_pio(struct net_device *dev) 374b955f6caSJeff Kirsher { 375b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 376b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 377b955f6caSJeff Kirsher u32 leptr; 378b955f6caSJeff Kirsher int i; 379b955f6caSJeff Kirsher 380b955f6caSJeff Kirsher /* Lock out other processes while setting up hardware */ 381b955f6caSJeff Kirsher netif_stop_queue(dev); 382b955f6caSJeff Kirsher lp->rx_new = lp->tx_new = 0; 383b955f6caSJeff Kirsher lp->rx_old = lp->tx_old = 0; 384b955f6caSJeff Kirsher 385b955f6caSJeff Kirsher /* Copy the ethernet address to the lance init block 386b955f6caSJeff Kirsher * Note that on the sparc you need to swap the ethernet address. 387b955f6caSJeff Kirsher */ 388b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[1], &ib->phys_addr[0]); 389b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[0], &ib->phys_addr[1]); 390b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[3], &ib->phys_addr[2]); 391b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[2], &ib->phys_addr[3]); 392b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[5], &ib->phys_addr[4]); 393b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[4], &ib->phys_addr[5]); 394b955f6caSJeff Kirsher 395b955f6caSJeff Kirsher /* Setup the Tx ring entries */ 396b955f6caSJeff Kirsher for (i = 0; i < TX_RING_SIZE; i++) { 397b955f6caSJeff Kirsher leptr = libbuff_offset(tx_buf, i); 398b955f6caSJeff Kirsher sbus_writew(leptr, &ib->btx_ring [i].tmd0); 399b955f6caSJeff Kirsher sbus_writeb(leptr >> 16,&ib->btx_ring [i].tmd1_hadr); 400b955f6caSJeff Kirsher sbus_writeb(0, &ib->btx_ring [i].tmd1_bits); 401b955f6caSJeff Kirsher 402b955f6caSJeff Kirsher /* The ones required by tmd2 */ 403b955f6caSJeff Kirsher sbus_writew(0xf000, &ib->btx_ring [i].length); 404b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring [i].misc); 405b955f6caSJeff Kirsher } 406b955f6caSJeff Kirsher 407b955f6caSJeff Kirsher /* Setup the Rx ring entries */ 408b955f6caSJeff Kirsher for (i = 0; i < RX_RING_SIZE; i++) { 409b955f6caSJeff Kirsher leptr = libbuff_offset(rx_buf, i); 410b955f6caSJeff Kirsher 411b955f6caSJeff Kirsher sbus_writew(leptr, &ib->brx_ring [i].rmd0); 412b955f6caSJeff Kirsher sbus_writeb(leptr >> 16,&ib->brx_ring [i].rmd1_hadr); 413b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &ib->brx_ring [i].rmd1_bits); 414b955f6caSJeff Kirsher sbus_writew(-RX_BUFF_SIZE|0xf000, 415b955f6caSJeff Kirsher &ib->brx_ring [i].length); 416b955f6caSJeff Kirsher sbus_writew(0, &ib->brx_ring [i].mblength); 417b955f6caSJeff Kirsher } 418b955f6caSJeff Kirsher 419b955f6caSJeff Kirsher /* Setup the initialization block */ 420b955f6caSJeff Kirsher 421b955f6caSJeff Kirsher /* Setup rx descriptor pointer */ 422b955f6caSJeff Kirsher leptr = libdesc_offset(brx_ring, 0); 423b955f6caSJeff Kirsher sbus_writew((LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16), 424b955f6caSJeff Kirsher &ib->rx_len); 425b955f6caSJeff Kirsher sbus_writew(leptr, &ib->rx_ptr); 426b955f6caSJeff Kirsher 427b955f6caSJeff Kirsher /* Setup tx descriptor pointer */ 428b955f6caSJeff Kirsher leptr = libdesc_offset(btx_ring, 0); 429b955f6caSJeff Kirsher sbus_writew((LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16), 430b955f6caSJeff Kirsher &ib->tx_len); 431b955f6caSJeff Kirsher sbus_writew(leptr, &ib->tx_ptr); 432b955f6caSJeff Kirsher } 433b955f6caSJeff Kirsher 434b955f6caSJeff Kirsher static void init_restart_ledma(struct lance_private *lp) 435b955f6caSJeff Kirsher { 436b955f6caSJeff Kirsher u32 csr = sbus_readl(lp->dregs + DMA_CSR); 437b955f6caSJeff Kirsher 438b955f6caSJeff Kirsher if (!(csr & DMA_HNDL_ERROR)) { 439b955f6caSJeff Kirsher /* E-Cache draining */ 440b955f6caSJeff Kirsher while (sbus_readl(lp->dregs + DMA_CSR) & DMA_FIFO_ISDRAIN) 441b955f6caSJeff Kirsher barrier(); 442b955f6caSJeff Kirsher } 443b955f6caSJeff Kirsher 444b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 445b955f6caSJeff Kirsher csr &= ~DMA_E_BURSTS; 446b955f6caSJeff Kirsher if (lp->burst_sizes & DMA_BURST32) 447b955f6caSJeff Kirsher csr |= DMA_E_BURST32; 448b955f6caSJeff Kirsher else 449b955f6caSJeff Kirsher csr |= DMA_E_BURST16; 450b955f6caSJeff Kirsher 451b955f6caSJeff Kirsher csr |= (DMA_DSBL_RD_DRN | DMA_DSBL_WR_INV | DMA_FIFO_INV); 452b955f6caSJeff Kirsher 453b955f6caSJeff Kirsher if (lp->tpe) 454b955f6caSJeff Kirsher csr |= DMA_EN_ENETAUI; 455b955f6caSJeff Kirsher else 456b955f6caSJeff Kirsher csr &= ~DMA_EN_ENETAUI; 457b955f6caSJeff Kirsher udelay(20); 458b955f6caSJeff Kirsher sbus_writel(csr, lp->dregs + DMA_CSR); 459b955f6caSJeff Kirsher udelay(200); 460b955f6caSJeff Kirsher } 461b955f6caSJeff Kirsher 462b955f6caSJeff Kirsher static int init_restart_lance(struct lance_private *lp) 463b955f6caSJeff Kirsher { 464b955f6caSJeff Kirsher u16 regval = 0; 465b955f6caSJeff Kirsher int i; 466b955f6caSJeff Kirsher 467b955f6caSJeff Kirsher if (lp->dregs) 468b955f6caSJeff Kirsher init_restart_ledma(lp); 469b955f6caSJeff Kirsher 470b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 471b955f6caSJeff Kirsher sbus_writew(LE_C0_INIT, lp->lregs + RDP); 472b955f6caSJeff Kirsher 473b955f6caSJeff Kirsher /* Wait for the lance to complete initialization */ 474b955f6caSJeff Kirsher for (i = 0; i < 100; i++) { 475b955f6caSJeff Kirsher regval = sbus_readw(lp->lregs + RDP); 476b955f6caSJeff Kirsher 477b955f6caSJeff Kirsher if (regval & (LE_C0_ERR | LE_C0_IDON)) 478b955f6caSJeff Kirsher break; 479b955f6caSJeff Kirsher barrier(); 480b955f6caSJeff Kirsher } 481b955f6caSJeff Kirsher if (i == 100 || (regval & LE_C0_ERR)) { 482b955f6caSJeff Kirsher printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n", 483b955f6caSJeff Kirsher i, regval); 484b955f6caSJeff Kirsher if (lp->dregs) 485b955f6caSJeff Kirsher printk("dcsr=%8.8x\n", sbus_readl(lp->dregs + DMA_CSR)); 486b955f6caSJeff Kirsher return -1; 487b955f6caSJeff Kirsher } 488b955f6caSJeff Kirsher 489b955f6caSJeff Kirsher /* Clear IDON by writing a "1", enable interrupts and start lance */ 490b955f6caSJeff Kirsher sbus_writew(LE_C0_IDON, lp->lregs + RDP); 491b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_STRT, lp->lregs + RDP); 492b955f6caSJeff Kirsher 493b955f6caSJeff Kirsher if (lp->dregs) { 494b955f6caSJeff Kirsher u32 csr = sbus_readl(lp->dregs + DMA_CSR); 495b955f6caSJeff Kirsher 496b955f6caSJeff Kirsher csr |= DMA_INT_ENAB; 497b955f6caSJeff Kirsher sbus_writel(csr, lp->dregs + DMA_CSR); 498b955f6caSJeff Kirsher } 499b955f6caSJeff Kirsher 500b955f6caSJeff Kirsher return 0; 501b955f6caSJeff Kirsher } 502b955f6caSJeff Kirsher 503b955f6caSJeff Kirsher static void lance_rx_dvma(struct net_device *dev) 504b955f6caSJeff Kirsher { 505b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 506b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 507b955f6caSJeff Kirsher struct lance_rx_desc *rd; 508b955f6caSJeff Kirsher u8 bits; 509b955f6caSJeff Kirsher int len, entry = lp->rx_new; 510b955f6caSJeff Kirsher struct sk_buff *skb; 511b955f6caSJeff Kirsher 512b955f6caSJeff Kirsher for (rd = &ib->brx_ring [entry]; 513b955f6caSJeff Kirsher !((bits = rd->rmd1_bits) & LE_R1_OWN); 514b955f6caSJeff Kirsher rd = &ib->brx_ring [entry]) { 515b955f6caSJeff Kirsher 516b955f6caSJeff Kirsher /* We got an incomplete frame? */ 517b955f6caSJeff Kirsher if ((bits & LE_R1_POK) != LE_R1_POK) { 518b955f6caSJeff Kirsher dev->stats.rx_over_errors++; 519b955f6caSJeff Kirsher dev->stats.rx_errors++; 520b955f6caSJeff Kirsher } else if (bits & LE_R1_ERR) { 521b955f6caSJeff Kirsher /* Count only the end frame as a rx error, 522b955f6caSJeff Kirsher * not the beginning 523b955f6caSJeff Kirsher */ 524b955f6caSJeff Kirsher if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; 525b955f6caSJeff Kirsher if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; 526b955f6caSJeff Kirsher if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; 527b955f6caSJeff Kirsher if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; 528b955f6caSJeff Kirsher if (bits & LE_R1_EOP) dev->stats.rx_errors++; 529b955f6caSJeff Kirsher } else { 530b955f6caSJeff Kirsher len = (rd->mblength & 0xfff) - 4; 5311d266430SPradeep A Dalvi skb = netdev_alloc_skb(dev, len + 2); 532b955f6caSJeff Kirsher 533*b0b815a3SGuofeng Yue if (!skb) { 534b955f6caSJeff Kirsher dev->stats.rx_dropped++; 535b955f6caSJeff Kirsher rd->mblength = 0; 536b955f6caSJeff Kirsher rd->rmd1_bits = LE_R1_OWN; 537b955f6caSJeff Kirsher lp->rx_new = RX_NEXT(entry); 538b955f6caSJeff Kirsher return; 539b955f6caSJeff Kirsher } 540b955f6caSJeff Kirsher 541b955f6caSJeff Kirsher dev->stats.rx_bytes += len; 542b955f6caSJeff Kirsher 543b955f6caSJeff Kirsher skb_reserve(skb, 2); /* 16 byte align */ 544b955f6caSJeff Kirsher skb_put(skb, len); /* make room */ 545b955f6caSJeff Kirsher skb_copy_to_linear_data(skb, 546b955f6caSJeff Kirsher (unsigned char *)&(ib->rx_buf [entry][0]), 547b955f6caSJeff Kirsher len); 548b955f6caSJeff Kirsher skb->protocol = eth_type_trans(skb, dev); 549b955f6caSJeff Kirsher netif_rx(skb); 550b955f6caSJeff Kirsher dev->stats.rx_packets++; 551b955f6caSJeff Kirsher } 552b955f6caSJeff Kirsher 553b955f6caSJeff Kirsher /* Return the packet to the pool */ 554b955f6caSJeff Kirsher rd->mblength = 0; 555b955f6caSJeff Kirsher rd->rmd1_bits = LE_R1_OWN; 556b955f6caSJeff Kirsher entry = RX_NEXT(entry); 557b955f6caSJeff Kirsher } 558b955f6caSJeff Kirsher 559b955f6caSJeff Kirsher lp->rx_new = entry; 560b955f6caSJeff Kirsher } 561b955f6caSJeff Kirsher 562b955f6caSJeff Kirsher static void lance_tx_dvma(struct net_device *dev) 563b955f6caSJeff Kirsher { 564b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 565b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 566b955f6caSJeff Kirsher int i, j; 567b955f6caSJeff Kirsher 568b955f6caSJeff Kirsher spin_lock(&lp->lock); 569b955f6caSJeff Kirsher 570b955f6caSJeff Kirsher j = lp->tx_old; 571b955f6caSJeff Kirsher for (i = j; i != lp->tx_new; i = j) { 572b955f6caSJeff Kirsher struct lance_tx_desc *td = &ib->btx_ring [i]; 573b955f6caSJeff Kirsher u8 bits = td->tmd1_bits; 574b955f6caSJeff Kirsher 575b955f6caSJeff Kirsher /* If we hit a packet not owned by us, stop */ 576b955f6caSJeff Kirsher if (bits & LE_T1_OWN) 577b955f6caSJeff Kirsher break; 578b955f6caSJeff Kirsher 579b955f6caSJeff Kirsher if (bits & LE_T1_ERR) { 580b955f6caSJeff Kirsher u16 status = td->misc; 581b955f6caSJeff Kirsher 582b955f6caSJeff Kirsher dev->stats.tx_errors++; 583b955f6caSJeff Kirsher if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; 584b955f6caSJeff Kirsher if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; 585b955f6caSJeff Kirsher 586b955f6caSJeff Kirsher if (status & LE_T3_CLOS) { 587b955f6caSJeff Kirsher dev->stats.tx_carrier_errors++; 588b955f6caSJeff Kirsher if (lp->auto_select) { 589b955f6caSJeff Kirsher lp->tpe = 1 - lp->tpe; 590b955f6caSJeff Kirsher printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", 591b955f6caSJeff Kirsher dev->name, lp->tpe?"TPE":"AUI"); 592b955f6caSJeff Kirsher STOP_LANCE(lp); 593b955f6caSJeff Kirsher lp->init_ring(dev); 594b955f6caSJeff Kirsher load_csrs(lp); 595b955f6caSJeff Kirsher init_restart_lance(lp); 596b955f6caSJeff Kirsher goto out; 597b955f6caSJeff Kirsher } 598b955f6caSJeff Kirsher } 599b955f6caSJeff Kirsher 600b955f6caSJeff Kirsher /* Buffer errors and underflows turn off the 601b955f6caSJeff Kirsher * transmitter, restart the adapter. 602b955f6caSJeff Kirsher */ 603b955f6caSJeff Kirsher if (status & (LE_T3_BUF|LE_T3_UFL)) { 604b955f6caSJeff Kirsher dev->stats.tx_fifo_errors++; 605b955f6caSJeff Kirsher 606b955f6caSJeff Kirsher printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 607b955f6caSJeff Kirsher dev->name); 608b955f6caSJeff Kirsher STOP_LANCE(lp); 609b955f6caSJeff Kirsher lp->init_ring(dev); 610b955f6caSJeff Kirsher load_csrs(lp); 611b955f6caSJeff Kirsher init_restart_lance(lp); 612b955f6caSJeff Kirsher goto out; 613b955f6caSJeff Kirsher } 614b955f6caSJeff Kirsher } else if ((bits & LE_T1_POK) == LE_T1_POK) { 615b955f6caSJeff Kirsher /* 616b955f6caSJeff Kirsher * So we don't count the packet more than once. 617b955f6caSJeff Kirsher */ 618b955f6caSJeff Kirsher td->tmd1_bits = bits & ~(LE_T1_POK); 619b955f6caSJeff Kirsher 620b955f6caSJeff Kirsher /* One collision before packet was sent. */ 621b955f6caSJeff Kirsher if (bits & LE_T1_EONE) 622b955f6caSJeff Kirsher dev->stats.collisions++; 623b955f6caSJeff Kirsher 624b955f6caSJeff Kirsher /* More than one collision, be optimistic. */ 625b955f6caSJeff Kirsher if (bits & LE_T1_EMORE) 626b955f6caSJeff Kirsher dev->stats.collisions += 2; 627b955f6caSJeff Kirsher 628b955f6caSJeff Kirsher dev->stats.tx_packets++; 629b955f6caSJeff Kirsher } 630b955f6caSJeff Kirsher 631b955f6caSJeff Kirsher j = TX_NEXT(j); 632b955f6caSJeff Kirsher } 633b955f6caSJeff Kirsher lp->tx_old = j; 634b955f6caSJeff Kirsher out: 635b955f6caSJeff Kirsher if (netif_queue_stopped(dev) && 636b955f6caSJeff Kirsher TX_BUFFS_AVAIL > 0) 637b955f6caSJeff Kirsher netif_wake_queue(dev); 638b955f6caSJeff Kirsher 639b955f6caSJeff Kirsher spin_unlock(&lp->lock); 640b955f6caSJeff Kirsher } 641b955f6caSJeff Kirsher 642b955f6caSJeff Kirsher static void lance_piocopy_to_skb(struct sk_buff *skb, void __iomem *piobuf, int len) 643b955f6caSJeff Kirsher { 644b955f6caSJeff Kirsher u16 *p16 = (u16 *) skb->data; 645b955f6caSJeff Kirsher u32 *p32; 646b955f6caSJeff Kirsher u8 *p8; 647b955f6caSJeff Kirsher void __iomem *pbuf = piobuf; 648b955f6caSJeff Kirsher 649b955f6caSJeff Kirsher /* We know here that both src and dest are on a 16bit boundary. */ 650b955f6caSJeff Kirsher *p16++ = sbus_readw(pbuf); 651b955f6caSJeff Kirsher p32 = (u32 *) p16; 652b955f6caSJeff Kirsher pbuf += 2; 653b955f6caSJeff Kirsher len -= 2; 654b955f6caSJeff Kirsher 655b955f6caSJeff Kirsher while (len >= 4) { 656b955f6caSJeff Kirsher *p32++ = sbus_readl(pbuf); 657b955f6caSJeff Kirsher pbuf += 4; 658b955f6caSJeff Kirsher len -= 4; 659b955f6caSJeff Kirsher } 660b955f6caSJeff Kirsher p8 = (u8 *) p32; 661b955f6caSJeff Kirsher if (len >= 2) { 662b955f6caSJeff Kirsher p16 = (u16 *) p32; 663b955f6caSJeff Kirsher *p16++ = sbus_readw(pbuf); 664b955f6caSJeff Kirsher pbuf += 2; 665b955f6caSJeff Kirsher len -= 2; 666b955f6caSJeff Kirsher p8 = (u8 *) p16; 667b955f6caSJeff Kirsher } 668b955f6caSJeff Kirsher if (len >= 1) 669b955f6caSJeff Kirsher *p8 = sbus_readb(pbuf); 670b955f6caSJeff Kirsher } 671b955f6caSJeff Kirsher 672b955f6caSJeff Kirsher static void lance_rx_pio(struct net_device *dev) 673b955f6caSJeff Kirsher { 674b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 675b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 676b955f6caSJeff Kirsher struct lance_rx_desc __iomem *rd; 677b955f6caSJeff Kirsher unsigned char bits; 678b955f6caSJeff Kirsher int len, entry; 679b955f6caSJeff Kirsher struct sk_buff *skb; 680b955f6caSJeff Kirsher 681b955f6caSJeff Kirsher entry = lp->rx_new; 682b955f6caSJeff Kirsher for (rd = &ib->brx_ring [entry]; 683b955f6caSJeff Kirsher !((bits = sbus_readb(&rd->rmd1_bits)) & LE_R1_OWN); 684b955f6caSJeff Kirsher rd = &ib->brx_ring [entry]) { 685b955f6caSJeff Kirsher 686b955f6caSJeff Kirsher /* We got an incomplete frame? */ 687b955f6caSJeff Kirsher if ((bits & LE_R1_POK) != LE_R1_POK) { 688b955f6caSJeff Kirsher dev->stats.rx_over_errors++; 689b955f6caSJeff Kirsher dev->stats.rx_errors++; 690b955f6caSJeff Kirsher } else if (bits & LE_R1_ERR) { 691b955f6caSJeff Kirsher /* Count only the end frame as a rx error, 692b955f6caSJeff Kirsher * not the beginning 693b955f6caSJeff Kirsher */ 694b955f6caSJeff Kirsher if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; 695b955f6caSJeff Kirsher if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; 696b955f6caSJeff Kirsher if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; 697b955f6caSJeff Kirsher if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; 698b955f6caSJeff Kirsher if (bits & LE_R1_EOP) dev->stats.rx_errors++; 699b955f6caSJeff Kirsher } else { 700b955f6caSJeff Kirsher len = (sbus_readw(&rd->mblength) & 0xfff) - 4; 7011d266430SPradeep A Dalvi skb = netdev_alloc_skb(dev, len + 2); 702b955f6caSJeff Kirsher 703*b0b815a3SGuofeng Yue if (!skb) { 704b955f6caSJeff Kirsher dev->stats.rx_dropped++; 705b955f6caSJeff Kirsher sbus_writew(0, &rd->mblength); 706b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); 707b955f6caSJeff Kirsher lp->rx_new = RX_NEXT(entry); 708b955f6caSJeff Kirsher return; 709b955f6caSJeff Kirsher } 710b955f6caSJeff Kirsher 711b955f6caSJeff Kirsher dev->stats.rx_bytes += len; 712b955f6caSJeff Kirsher 713b955f6caSJeff Kirsher skb_reserve (skb, 2); /* 16 byte align */ 714b955f6caSJeff Kirsher skb_put(skb, len); /* make room */ 715b955f6caSJeff Kirsher lance_piocopy_to_skb(skb, &(ib->rx_buf[entry][0]), len); 716b955f6caSJeff Kirsher skb->protocol = eth_type_trans(skb, dev); 717b955f6caSJeff Kirsher netif_rx(skb); 718b955f6caSJeff Kirsher dev->stats.rx_packets++; 719b955f6caSJeff Kirsher } 720b955f6caSJeff Kirsher 721b955f6caSJeff Kirsher /* Return the packet to the pool */ 722b955f6caSJeff Kirsher sbus_writew(0, &rd->mblength); 723b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); 724b955f6caSJeff Kirsher entry = RX_NEXT(entry); 725b955f6caSJeff Kirsher } 726b955f6caSJeff Kirsher 727b955f6caSJeff Kirsher lp->rx_new = entry; 728b955f6caSJeff Kirsher } 729b955f6caSJeff Kirsher 730b955f6caSJeff Kirsher static void lance_tx_pio(struct net_device *dev) 731b955f6caSJeff Kirsher { 732b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 733b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 734b955f6caSJeff Kirsher int i, j; 735b955f6caSJeff Kirsher 736b955f6caSJeff Kirsher spin_lock(&lp->lock); 737b955f6caSJeff Kirsher 738b955f6caSJeff Kirsher j = lp->tx_old; 739b955f6caSJeff Kirsher for (i = j; i != lp->tx_new; i = j) { 740b955f6caSJeff Kirsher struct lance_tx_desc __iomem *td = &ib->btx_ring [i]; 741b955f6caSJeff Kirsher u8 bits = sbus_readb(&td->tmd1_bits); 742b955f6caSJeff Kirsher 743b955f6caSJeff Kirsher /* If we hit a packet not owned by us, stop */ 744b955f6caSJeff Kirsher if (bits & LE_T1_OWN) 745b955f6caSJeff Kirsher break; 746b955f6caSJeff Kirsher 747b955f6caSJeff Kirsher if (bits & LE_T1_ERR) { 748b955f6caSJeff Kirsher u16 status = sbus_readw(&td->misc); 749b955f6caSJeff Kirsher 750b955f6caSJeff Kirsher dev->stats.tx_errors++; 751b955f6caSJeff Kirsher if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; 752b955f6caSJeff Kirsher if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; 753b955f6caSJeff Kirsher 754b955f6caSJeff Kirsher if (status & LE_T3_CLOS) { 755b955f6caSJeff Kirsher dev->stats.tx_carrier_errors++; 756b955f6caSJeff Kirsher if (lp->auto_select) { 757b955f6caSJeff Kirsher lp->tpe = 1 - lp->tpe; 758b955f6caSJeff Kirsher printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", 759b955f6caSJeff Kirsher dev->name, lp->tpe?"TPE":"AUI"); 760b955f6caSJeff Kirsher STOP_LANCE(lp); 761b955f6caSJeff Kirsher lp->init_ring(dev); 762b955f6caSJeff Kirsher load_csrs(lp); 763b955f6caSJeff Kirsher init_restart_lance(lp); 764b955f6caSJeff Kirsher goto out; 765b955f6caSJeff Kirsher } 766b955f6caSJeff Kirsher } 767b955f6caSJeff Kirsher 768b955f6caSJeff Kirsher /* Buffer errors and underflows turn off the 769b955f6caSJeff Kirsher * transmitter, restart the adapter. 770b955f6caSJeff Kirsher */ 771b955f6caSJeff Kirsher if (status & (LE_T3_BUF|LE_T3_UFL)) { 772b955f6caSJeff Kirsher dev->stats.tx_fifo_errors++; 773b955f6caSJeff Kirsher 774b955f6caSJeff Kirsher printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 775b955f6caSJeff Kirsher dev->name); 776b955f6caSJeff Kirsher STOP_LANCE(lp); 777b955f6caSJeff Kirsher lp->init_ring(dev); 778b955f6caSJeff Kirsher load_csrs(lp); 779b955f6caSJeff Kirsher init_restart_lance(lp); 780b955f6caSJeff Kirsher goto out; 781b955f6caSJeff Kirsher } 782b955f6caSJeff Kirsher } else if ((bits & LE_T1_POK) == LE_T1_POK) { 783b955f6caSJeff Kirsher /* 784b955f6caSJeff Kirsher * So we don't count the packet more than once. 785b955f6caSJeff Kirsher */ 786b955f6caSJeff Kirsher sbus_writeb(bits & ~(LE_T1_POK), &td->tmd1_bits); 787b955f6caSJeff Kirsher 788b955f6caSJeff Kirsher /* One collision before packet was sent. */ 789b955f6caSJeff Kirsher if (bits & LE_T1_EONE) 790b955f6caSJeff Kirsher dev->stats.collisions++; 791b955f6caSJeff Kirsher 792b955f6caSJeff Kirsher /* More than one collision, be optimistic. */ 793b955f6caSJeff Kirsher if (bits & LE_T1_EMORE) 794b955f6caSJeff Kirsher dev->stats.collisions += 2; 795b955f6caSJeff Kirsher 796b955f6caSJeff Kirsher dev->stats.tx_packets++; 797b955f6caSJeff Kirsher } 798b955f6caSJeff Kirsher 799b955f6caSJeff Kirsher j = TX_NEXT(j); 800b955f6caSJeff Kirsher } 801b955f6caSJeff Kirsher lp->tx_old = j; 802b955f6caSJeff Kirsher 803b955f6caSJeff Kirsher if (netif_queue_stopped(dev) && 804b955f6caSJeff Kirsher TX_BUFFS_AVAIL > 0) 805b955f6caSJeff Kirsher netif_wake_queue(dev); 806b955f6caSJeff Kirsher out: 807b955f6caSJeff Kirsher spin_unlock(&lp->lock); 808b955f6caSJeff Kirsher } 809b955f6caSJeff Kirsher 810b955f6caSJeff Kirsher static irqreturn_t lance_interrupt(int irq, void *dev_id) 811b955f6caSJeff Kirsher { 812b955f6caSJeff Kirsher struct net_device *dev = dev_id; 813b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 814b955f6caSJeff Kirsher int csr0; 815b955f6caSJeff Kirsher 816b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 817b955f6caSJeff Kirsher csr0 = sbus_readw(lp->lregs + RDP); 818b955f6caSJeff Kirsher 819b955f6caSJeff Kirsher /* Acknowledge all the interrupt sources ASAP */ 820b955f6caSJeff Kirsher sbus_writew(csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT), 821b955f6caSJeff Kirsher lp->lregs + RDP); 822b955f6caSJeff Kirsher 823b955f6caSJeff Kirsher if ((csr0 & LE_C0_ERR) != 0) { 824b955f6caSJeff Kirsher /* Clear the error condition */ 825b955f6caSJeff Kirsher sbus_writew((LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | 826b955f6caSJeff Kirsher LE_C0_CERR | LE_C0_MERR), 827b955f6caSJeff Kirsher lp->lregs + RDP); 828b955f6caSJeff Kirsher } 829b955f6caSJeff Kirsher 830b955f6caSJeff Kirsher if (csr0 & LE_C0_RINT) 831b955f6caSJeff Kirsher lp->rx(dev); 832b955f6caSJeff Kirsher 833b955f6caSJeff Kirsher if (csr0 & LE_C0_TINT) 834b955f6caSJeff Kirsher lp->tx(dev); 835b955f6caSJeff Kirsher 836b955f6caSJeff Kirsher if (csr0 & LE_C0_BABL) 837b955f6caSJeff Kirsher dev->stats.tx_errors++; 838b955f6caSJeff Kirsher 839b955f6caSJeff Kirsher if (csr0 & LE_C0_MISS) 840b955f6caSJeff Kirsher dev->stats.rx_errors++; 841b955f6caSJeff Kirsher 842b955f6caSJeff Kirsher if (csr0 & LE_C0_MERR) { 843b955f6caSJeff Kirsher if (lp->dregs) { 844b955f6caSJeff Kirsher u32 addr = sbus_readl(lp->dregs + DMA_ADDR); 845b955f6caSJeff Kirsher 846b955f6caSJeff Kirsher printk(KERN_ERR "%s: Memory error, status %04x, addr %06x\n", 847b955f6caSJeff Kirsher dev->name, csr0, addr & 0xffffff); 848b955f6caSJeff Kirsher } else { 849b955f6caSJeff Kirsher printk(KERN_ERR "%s: Memory error, status %04x\n", 850b955f6caSJeff Kirsher dev->name, csr0); 851b955f6caSJeff Kirsher } 852b955f6caSJeff Kirsher 853b955f6caSJeff Kirsher sbus_writew(LE_C0_STOP, lp->lregs + RDP); 854b955f6caSJeff Kirsher 855b955f6caSJeff Kirsher if (lp->dregs) { 856b955f6caSJeff Kirsher u32 dma_csr = sbus_readl(lp->dregs + DMA_CSR); 857b955f6caSJeff Kirsher 858b955f6caSJeff Kirsher dma_csr |= DMA_FIFO_INV; 859b955f6caSJeff Kirsher sbus_writel(dma_csr, lp->dregs + DMA_CSR); 860b955f6caSJeff Kirsher } 861b955f6caSJeff Kirsher 862b955f6caSJeff Kirsher lp->init_ring(dev); 863b955f6caSJeff Kirsher load_csrs(lp); 864b955f6caSJeff Kirsher init_restart_lance(lp); 865b955f6caSJeff Kirsher netif_wake_queue(dev); 866b955f6caSJeff Kirsher } 867b955f6caSJeff Kirsher 868b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA, lp->lregs + RDP); 869b955f6caSJeff Kirsher 870b955f6caSJeff Kirsher return IRQ_HANDLED; 871b955f6caSJeff Kirsher } 872b955f6caSJeff Kirsher 873b955f6caSJeff Kirsher /* Build a fake network packet and send it to ourselves. */ 874b955f6caSJeff Kirsher static void build_fake_packet(struct lance_private *lp) 875b955f6caSJeff Kirsher { 876b955f6caSJeff Kirsher struct net_device *dev = lp->dev; 877b955f6caSJeff Kirsher int i, entry; 878b955f6caSJeff Kirsher 879b955f6caSJeff Kirsher entry = lp->tx_new & TX_RING_MOD_MASK; 880b955f6caSJeff Kirsher if (lp->pio_buffer) { 881b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 882b955f6caSJeff Kirsher u16 __iomem *packet = (u16 __iomem *) &(ib->tx_buf[entry][0]); 883b955f6caSJeff Kirsher struct ethhdr __iomem *eth = (struct ethhdr __iomem *) packet; 884b955f6caSJeff Kirsher for (i = 0; i < (ETH_ZLEN / sizeof(u16)); i++) 885b955f6caSJeff Kirsher sbus_writew(0, &packet[i]); 886b955f6caSJeff Kirsher for (i = 0; i < 6; i++) { 887b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[i], ð->h_dest[i]); 888b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[i], ð->h_source[i]); 889b955f6caSJeff Kirsher } 890b955f6caSJeff Kirsher sbus_writew((-ETH_ZLEN) | 0xf000, &ib->btx_ring[entry].length); 891b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring[entry].misc); 892b955f6caSJeff Kirsher sbus_writeb(LE_T1_POK|LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); 893b955f6caSJeff Kirsher } else { 894b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 895b955f6caSJeff Kirsher u16 *packet = (u16 *) &(ib->tx_buf[entry][0]); 896b955f6caSJeff Kirsher struct ethhdr *eth = (struct ethhdr *) packet; 897b955f6caSJeff Kirsher memset(packet, 0, ETH_ZLEN); 898b955f6caSJeff Kirsher for (i = 0; i < 6; i++) { 899b955f6caSJeff Kirsher eth->h_dest[i] = dev->dev_addr[i]; 900b955f6caSJeff Kirsher eth->h_source[i] = dev->dev_addr[i]; 901b955f6caSJeff Kirsher } 902b955f6caSJeff Kirsher ib->btx_ring[entry].length = (-ETH_ZLEN) | 0xf000; 903b955f6caSJeff Kirsher ib->btx_ring[entry].misc = 0; 904b955f6caSJeff Kirsher ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); 905b955f6caSJeff Kirsher } 906b955f6caSJeff Kirsher lp->tx_new = TX_NEXT(entry); 907b955f6caSJeff Kirsher } 908b955f6caSJeff Kirsher 909b955f6caSJeff Kirsher static int lance_open(struct net_device *dev) 910b955f6caSJeff Kirsher { 911b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 912b955f6caSJeff Kirsher int status = 0; 913b955f6caSJeff Kirsher 914b955f6caSJeff Kirsher STOP_LANCE(lp); 915b955f6caSJeff Kirsher 916b955f6caSJeff Kirsher if (request_irq(dev->irq, lance_interrupt, IRQF_SHARED, 917b955f6caSJeff Kirsher lancestr, (void *) dev)) { 918b955f6caSJeff Kirsher printk(KERN_ERR "Lance: Can't get irq %d\n", dev->irq); 919b955f6caSJeff Kirsher return -EAGAIN; 920b955f6caSJeff Kirsher } 921b955f6caSJeff Kirsher 922b955f6caSJeff Kirsher /* On the 4m, setup the ledma to provide the upper bits for buffers */ 923b955f6caSJeff Kirsher if (lp->dregs) { 924b955f6caSJeff Kirsher u32 regval = lp->init_block_dvma & 0xff000000; 925b955f6caSJeff Kirsher 926b955f6caSJeff Kirsher sbus_writel(regval, lp->dregs + DMA_TEST); 927b955f6caSJeff Kirsher } 928b955f6caSJeff Kirsher 929b955f6caSJeff Kirsher /* Set mode and clear multicast filter only at device open, 930b955f6caSJeff Kirsher * so that lance_init_ring() called at any error will not 931b955f6caSJeff Kirsher * forget multicast filters. 932b955f6caSJeff Kirsher * 933b955f6caSJeff Kirsher * BTW it is common bug in all lance drivers! --ANK 934b955f6caSJeff Kirsher */ 935b955f6caSJeff Kirsher if (lp->pio_buffer) { 936b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 937b955f6caSJeff Kirsher sbus_writew(0, &ib->mode); 938b955f6caSJeff Kirsher sbus_writel(0, &ib->filter[0]); 939b955f6caSJeff Kirsher sbus_writel(0, &ib->filter[1]); 940b955f6caSJeff Kirsher } else { 941b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 942b955f6caSJeff Kirsher ib->mode = 0; 943b955f6caSJeff Kirsher ib->filter [0] = 0; 944b955f6caSJeff Kirsher ib->filter [1] = 0; 945b955f6caSJeff Kirsher } 946b955f6caSJeff Kirsher 947b955f6caSJeff Kirsher lp->init_ring(dev); 948b955f6caSJeff Kirsher load_csrs(lp); 949b955f6caSJeff Kirsher 950b955f6caSJeff Kirsher netif_start_queue(dev); 951b955f6caSJeff Kirsher 952b955f6caSJeff Kirsher status = init_restart_lance(lp); 953b955f6caSJeff Kirsher if (!status && lp->auto_select) { 954b955f6caSJeff Kirsher build_fake_packet(lp); 955b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); 956b955f6caSJeff Kirsher } 957b955f6caSJeff Kirsher 958b955f6caSJeff Kirsher return status; 959b955f6caSJeff Kirsher } 960b955f6caSJeff Kirsher 961b955f6caSJeff Kirsher static int lance_close(struct net_device *dev) 962b955f6caSJeff Kirsher { 963b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 964b955f6caSJeff Kirsher 965b955f6caSJeff Kirsher netif_stop_queue(dev); 966b955f6caSJeff Kirsher del_timer_sync(&lp->multicast_timer); 967b955f6caSJeff Kirsher 968b955f6caSJeff Kirsher STOP_LANCE(lp); 969b955f6caSJeff Kirsher 970b955f6caSJeff Kirsher free_irq(dev->irq, (void *) dev); 971b955f6caSJeff Kirsher return 0; 972b955f6caSJeff Kirsher } 973b955f6caSJeff Kirsher 974b955f6caSJeff Kirsher static int lance_reset(struct net_device *dev) 975b955f6caSJeff Kirsher { 976b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 977b955f6caSJeff Kirsher int status; 978b955f6caSJeff Kirsher 979b955f6caSJeff Kirsher STOP_LANCE(lp); 980b955f6caSJeff Kirsher 981b955f6caSJeff Kirsher /* On the 4m, reset the dma too */ 982b955f6caSJeff Kirsher if (lp->dregs) { 983b955f6caSJeff Kirsher u32 csr, addr; 984b955f6caSJeff Kirsher 985b955f6caSJeff Kirsher printk(KERN_ERR "resetting ledma\n"); 986b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 987b955f6caSJeff Kirsher sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); 988b955f6caSJeff Kirsher udelay(200); 989b955f6caSJeff Kirsher sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); 990b955f6caSJeff Kirsher 991b955f6caSJeff Kirsher addr = lp->init_block_dvma & 0xff000000; 992b955f6caSJeff Kirsher sbus_writel(addr, lp->dregs + DMA_TEST); 993b955f6caSJeff Kirsher } 994b955f6caSJeff Kirsher lp->init_ring(dev); 995b955f6caSJeff Kirsher load_csrs(lp); 996860e9538SFlorian Westphal netif_trans_update(dev); /* prevent tx timeout */ 997b955f6caSJeff Kirsher status = init_restart_lance(lp); 998b955f6caSJeff Kirsher return status; 999b955f6caSJeff Kirsher } 1000b955f6caSJeff Kirsher 1001b955f6caSJeff Kirsher static void lance_piocopy_from_skb(void __iomem *dest, unsigned char *src, int len) 1002b955f6caSJeff Kirsher { 1003b955f6caSJeff Kirsher void __iomem *piobuf = dest; 1004b955f6caSJeff Kirsher u32 *p32; 1005b955f6caSJeff Kirsher u16 *p16; 1006b955f6caSJeff Kirsher u8 *p8; 1007b955f6caSJeff Kirsher 1008b955f6caSJeff Kirsher switch ((unsigned long)src & 0x3) { 1009b955f6caSJeff Kirsher case 0: 1010b955f6caSJeff Kirsher p32 = (u32 *) src; 1011b955f6caSJeff Kirsher while (len >= 4) { 1012b955f6caSJeff Kirsher sbus_writel(*p32, piobuf); 1013b955f6caSJeff Kirsher p32++; 1014b955f6caSJeff Kirsher piobuf += 4; 1015b955f6caSJeff Kirsher len -= 4; 1016b955f6caSJeff Kirsher } 1017b955f6caSJeff Kirsher src = (char *) p32; 1018b955f6caSJeff Kirsher break; 1019b955f6caSJeff Kirsher case 1: 1020b955f6caSJeff Kirsher case 3: 1021b955f6caSJeff Kirsher p8 = (u8 *) src; 1022b955f6caSJeff Kirsher while (len >= 4) { 1023b955f6caSJeff Kirsher u32 val; 1024b955f6caSJeff Kirsher 1025b955f6caSJeff Kirsher val = p8[0] << 24; 1026b955f6caSJeff Kirsher val |= p8[1] << 16; 1027b955f6caSJeff Kirsher val |= p8[2] << 8; 1028b955f6caSJeff Kirsher val |= p8[3]; 1029b955f6caSJeff Kirsher sbus_writel(val, piobuf); 1030b955f6caSJeff Kirsher p8 += 4; 1031b955f6caSJeff Kirsher piobuf += 4; 1032b955f6caSJeff Kirsher len -= 4; 1033b955f6caSJeff Kirsher } 1034b955f6caSJeff Kirsher src = (char *) p8; 1035b955f6caSJeff Kirsher break; 1036b955f6caSJeff Kirsher case 2: 1037b955f6caSJeff Kirsher p16 = (u16 *) src; 1038b955f6caSJeff Kirsher while (len >= 4) { 1039b955f6caSJeff Kirsher u32 val = p16[0]<<16 | p16[1]; 1040b955f6caSJeff Kirsher sbus_writel(val, piobuf); 1041b955f6caSJeff Kirsher p16 += 2; 1042b955f6caSJeff Kirsher piobuf += 4; 1043b955f6caSJeff Kirsher len -= 4; 1044b955f6caSJeff Kirsher } 1045b955f6caSJeff Kirsher src = (char *) p16; 1046b955f6caSJeff Kirsher break; 1047b955f6caSJeff Kirsher } 1048b955f6caSJeff Kirsher if (len >= 2) { 1049b955f6caSJeff Kirsher u16 val = src[0] << 8 | src[1]; 1050b955f6caSJeff Kirsher sbus_writew(val, piobuf); 1051b955f6caSJeff Kirsher src += 2; 1052b955f6caSJeff Kirsher piobuf += 2; 1053b955f6caSJeff Kirsher len -= 2; 1054b955f6caSJeff Kirsher } 1055b955f6caSJeff Kirsher if (len >= 1) 1056b955f6caSJeff Kirsher sbus_writeb(src[0], piobuf); 1057b955f6caSJeff Kirsher } 1058b955f6caSJeff Kirsher 1059b955f6caSJeff Kirsher static void lance_piozero(void __iomem *dest, int len) 1060b955f6caSJeff Kirsher { 1061b955f6caSJeff Kirsher void __iomem *piobuf = dest; 1062b955f6caSJeff Kirsher 1063b955f6caSJeff Kirsher if ((unsigned long)piobuf & 1) { 1064b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1065b955f6caSJeff Kirsher piobuf += 1; 1066b955f6caSJeff Kirsher len -= 1; 1067b955f6caSJeff Kirsher if (len == 0) 1068b955f6caSJeff Kirsher return; 1069b955f6caSJeff Kirsher } 1070b955f6caSJeff Kirsher if (len == 1) { 1071b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1072b955f6caSJeff Kirsher return; 1073b955f6caSJeff Kirsher } 1074b955f6caSJeff Kirsher if ((unsigned long)piobuf & 2) { 1075b955f6caSJeff Kirsher sbus_writew(0, piobuf); 1076b955f6caSJeff Kirsher piobuf += 2; 1077b955f6caSJeff Kirsher len -= 2; 1078b955f6caSJeff Kirsher if (len == 0) 1079b955f6caSJeff Kirsher return; 1080b955f6caSJeff Kirsher } 1081b955f6caSJeff Kirsher while (len >= 4) { 1082b955f6caSJeff Kirsher sbus_writel(0, piobuf); 1083b955f6caSJeff Kirsher piobuf += 4; 1084b955f6caSJeff Kirsher len -= 4; 1085b955f6caSJeff Kirsher } 1086b955f6caSJeff Kirsher if (len >= 2) { 1087b955f6caSJeff Kirsher sbus_writew(0, piobuf); 1088b955f6caSJeff Kirsher piobuf += 2; 1089b955f6caSJeff Kirsher len -= 2; 1090b955f6caSJeff Kirsher } 1091b955f6caSJeff Kirsher if (len >= 1) 1092b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1093b955f6caSJeff Kirsher } 1094b955f6caSJeff Kirsher 10950290bd29SMichael S. Tsirkin static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) 1096b955f6caSJeff Kirsher { 1097b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1098b955f6caSJeff Kirsher 1099b955f6caSJeff Kirsher printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", 1100b955f6caSJeff Kirsher dev->name, sbus_readw(lp->lregs + RDP)); 1101b955f6caSJeff Kirsher lance_reset(dev); 1102b955f6caSJeff Kirsher netif_wake_queue(dev); 1103b955f6caSJeff Kirsher } 1104b955f6caSJeff Kirsher 1105fe72352eSYueHaibing static netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 1106b955f6caSJeff Kirsher { 1107b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1108b955f6caSJeff Kirsher int entry, skblen, len; 1109b955f6caSJeff Kirsher 1110b955f6caSJeff Kirsher skblen = skb->len; 1111b955f6caSJeff Kirsher 1112b955f6caSJeff Kirsher len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; 1113b955f6caSJeff Kirsher 1114b955f6caSJeff Kirsher spin_lock_irq(&lp->lock); 1115b955f6caSJeff Kirsher 1116b955f6caSJeff Kirsher dev->stats.tx_bytes += len; 1117b955f6caSJeff Kirsher 1118b955f6caSJeff Kirsher entry = lp->tx_new & TX_RING_MOD_MASK; 1119b955f6caSJeff Kirsher if (lp->pio_buffer) { 1120b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1121b955f6caSJeff Kirsher sbus_writew((-len) | 0xf000, &ib->btx_ring[entry].length); 1122b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring[entry].misc); 1123b955f6caSJeff Kirsher lance_piocopy_from_skb(&ib->tx_buf[entry][0], skb->data, skblen); 1124b955f6caSJeff Kirsher if (len != skblen) 1125b955f6caSJeff Kirsher lance_piozero(&ib->tx_buf[entry][skblen], len - skblen); 1126b955f6caSJeff Kirsher sbus_writeb(LE_T1_POK | LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); 1127b955f6caSJeff Kirsher } else { 1128b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1129b955f6caSJeff Kirsher ib->btx_ring [entry].length = (-len) | 0xf000; 1130b955f6caSJeff Kirsher ib->btx_ring [entry].misc = 0; 1131b955f6caSJeff Kirsher skb_copy_from_linear_data(skb, &ib->tx_buf [entry][0], skblen); 1132b955f6caSJeff Kirsher if (len != skblen) 1133b955f6caSJeff Kirsher memset((char *) &ib->tx_buf [entry][skblen], 0, len - skblen); 1134b955f6caSJeff Kirsher ib->btx_ring [entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); 1135b955f6caSJeff Kirsher } 1136b955f6caSJeff Kirsher 1137b955f6caSJeff Kirsher lp->tx_new = TX_NEXT(entry); 1138b955f6caSJeff Kirsher 1139b955f6caSJeff Kirsher if (TX_BUFFS_AVAIL <= 0) 1140b955f6caSJeff Kirsher netif_stop_queue(dev); 1141b955f6caSJeff Kirsher 1142b955f6caSJeff Kirsher /* Kick the lance: transmit now */ 1143b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); 1144b955f6caSJeff Kirsher 1145b955f6caSJeff Kirsher /* Read back CSR to invalidate the E-Cache. 1146b955f6caSJeff Kirsher * This is needed, because DMA_DSBL_WR_INV is set. 1147b955f6caSJeff Kirsher */ 1148b955f6caSJeff Kirsher if (lp->dregs) 1149b955f6caSJeff Kirsher sbus_readw(lp->lregs + RDP); 1150b955f6caSJeff Kirsher 1151b955f6caSJeff Kirsher spin_unlock_irq(&lp->lock); 1152b955f6caSJeff Kirsher 1153b955f6caSJeff Kirsher dev_kfree_skb(skb); 1154b955f6caSJeff Kirsher 1155b955f6caSJeff Kirsher return NETDEV_TX_OK; 1156b955f6caSJeff Kirsher } 1157b955f6caSJeff Kirsher 1158b955f6caSJeff Kirsher /* taken from the depca driver */ 1159b955f6caSJeff Kirsher static void lance_load_multicast(struct net_device *dev) 1160b955f6caSJeff Kirsher { 1161b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1162b955f6caSJeff Kirsher struct netdev_hw_addr *ha; 1163b955f6caSJeff Kirsher u32 crc; 1164b955f6caSJeff Kirsher u32 val; 1165b955f6caSJeff Kirsher 1166b955f6caSJeff Kirsher /* set all multicast bits */ 1167b955f6caSJeff Kirsher if (dev->flags & IFF_ALLMULTI) 1168b955f6caSJeff Kirsher val = ~0; 1169b955f6caSJeff Kirsher else 1170b955f6caSJeff Kirsher val = 0; 1171b955f6caSJeff Kirsher 1172b955f6caSJeff Kirsher if (lp->pio_buffer) { 1173b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1174b955f6caSJeff Kirsher sbus_writel(val, &ib->filter[0]); 1175b955f6caSJeff Kirsher sbus_writel(val, &ib->filter[1]); 1176b955f6caSJeff Kirsher } else { 1177b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1178b955f6caSJeff Kirsher ib->filter [0] = val; 1179b955f6caSJeff Kirsher ib->filter [1] = val; 1180b955f6caSJeff Kirsher } 1181b955f6caSJeff Kirsher 1182b955f6caSJeff Kirsher if (dev->flags & IFF_ALLMULTI) 1183b955f6caSJeff Kirsher return; 1184b955f6caSJeff Kirsher 1185b955f6caSJeff Kirsher /* Add addresses */ 1186b955f6caSJeff Kirsher netdev_for_each_mc_addr(ha, dev) { 1187b955f6caSJeff Kirsher crc = ether_crc_le(6, ha->addr); 1188b955f6caSJeff Kirsher crc = crc >> 26; 1189b955f6caSJeff Kirsher if (lp->pio_buffer) { 1190b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1191b955f6caSJeff Kirsher u16 __iomem *mcast_table = (u16 __iomem *) &ib->filter; 1192b955f6caSJeff Kirsher u16 tmp = sbus_readw(&mcast_table[crc>>4]); 1193b955f6caSJeff Kirsher tmp |= 1 << (crc & 0xf); 1194b955f6caSJeff Kirsher sbus_writew(tmp, &mcast_table[crc>>4]); 1195b955f6caSJeff Kirsher } else { 1196b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1197b955f6caSJeff Kirsher u16 *mcast_table = (u16 *) &ib->filter; 1198b955f6caSJeff Kirsher mcast_table [crc >> 4] |= 1 << (crc & 0xf); 1199b955f6caSJeff Kirsher } 1200b955f6caSJeff Kirsher } 1201b955f6caSJeff Kirsher } 1202b955f6caSJeff Kirsher 1203b955f6caSJeff Kirsher static void lance_set_multicast(struct net_device *dev) 1204b955f6caSJeff Kirsher { 1205b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1206b955f6caSJeff Kirsher struct lance_init_block *ib_mem = lp->init_block_mem; 1207b955f6caSJeff Kirsher struct lance_init_block __iomem *ib_iomem = lp->init_block_iomem; 1208b955f6caSJeff Kirsher u16 mode; 1209b955f6caSJeff Kirsher 1210b955f6caSJeff Kirsher if (!netif_running(dev)) 1211b955f6caSJeff Kirsher return; 1212b955f6caSJeff Kirsher 1213b955f6caSJeff Kirsher if (lp->tx_old != lp->tx_new) { 1214b955f6caSJeff Kirsher mod_timer(&lp->multicast_timer, jiffies + 4); 1215b955f6caSJeff Kirsher netif_wake_queue(dev); 1216b955f6caSJeff Kirsher return; 1217b955f6caSJeff Kirsher } 1218b955f6caSJeff Kirsher 1219b955f6caSJeff Kirsher netif_stop_queue(dev); 1220b955f6caSJeff Kirsher 1221b955f6caSJeff Kirsher STOP_LANCE(lp); 1222b955f6caSJeff Kirsher lp->init_ring(dev); 1223b955f6caSJeff Kirsher 1224b955f6caSJeff Kirsher if (lp->pio_buffer) 1225b955f6caSJeff Kirsher mode = sbus_readw(&ib_iomem->mode); 1226b955f6caSJeff Kirsher else 1227b955f6caSJeff Kirsher mode = ib_mem->mode; 1228b955f6caSJeff Kirsher if (dev->flags & IFF_PROMISC) { 1229b955f6caSJeff Kirsher mode |= LE_MO_PROM; 1230b955f6caSJeff Kirsher if (lp->pio_buffer) 1231b955f6caSJeff Kirsher sbus_writew(mode, &ib_iomem->mode); 1232b955f6caSJeff Kirsher else 1233b955f6caSJeff Kirsher ib_mem->mode = mode; 1234b955f6caSJeff Kirsher } else { 1235b955f6caSJeff Kirsher mode &= ~LE_MO_PROM; 1236b955f6caSJeff Kirsher if (lp->pio_buffer) 1237b955f6caSJeff Kirsher sbus_writew(mode, &ib_iomem->mode); 1238b955f6caSJeff Kirsher else 1239b955f6caSJeff Kirsher ib_mem->mode = mode; 1240b955f6caSJeff Kirsher lance_load_multicast(dev); 1241b955f6caSJeff Kirsher } 1242b955f6caSJeff Kirsher load_csrs(lp); 1243b955f6caSJeff Kirsher init_restart_lance(lp); 1244b955f6caSJeff Kirsher netif_wake_queue(dev); 1245b955f6caSJeff Kirsher } 1246b955f6caSJeff Kirsher 1247c6c52ba1SKees Cook static void lance_set_multicast_retry(struct timer_list *t) 1248b955f6caSJeff Kirsher { 1249c6c52ba1SKees Cook struct lance_private *lp = from_timer(lp, t, multicast_timer); 1250c6c52ba1SKees Cook struct net_device *dev = lp->dev; 1251b955f6caSJeff Kirsher 1252b955f6caSJeff Kirsher lance_set_multicast(dev); 1253b955f6caSJeff Kirsher } 1254b955f6caSJeff Kirsher 1255b955f6caSJeff Kirsher static void lance_free_hwresources(struct lance_private *lp) 1256b955f6caSJeff Kirsher { 1257b955f6caSJeff Kirsher if (lp->lregs) 1258b955f6caSJeff Kirsher of_iounmap(&lp->op->resource[0], lp->lregs, LANCE_REG_SIZE); 1259b955f6caSJeff Kirsher if (lp->dregs) { 1260b955f6caSJeff Kirsher struct platform_device *ledma = lp->ledma; 1261b955f6caSJeff Kirsher 1262b955f6caSJeff Kirsher of_iounmap(&ledma->resource[0], lp->dregs, 1263b955f6caSJeff Kirsher resource_size(&ledma->resource[0])); 1264b955f6caSJeff Kirsher } 1265b955f6caSJeff Kirsher if (lp->init_block_iomem) { 1266b955f6caSJeff Kirsher of_iounmap(&lp->lebuffer->resource[0], lp->init_block_iomem, 1267b955f6caSJeff Kirsher sizeof(struct lance_init_block)); 1268b955f6caSJeff Kirsher } else if (lp->init_block_mem) { 1269b955f6caSJeff Kirsher dma_free_coherent(&lp->op->dev, 1270b955f6caSJeff Kirsher sizeof(struct lance_init_block), 1271b955f6caSJeff Kirsher lp->init_block_mem, 1272b955f6caSJeff Kirsher lp->init_block_dvma); 1273b955f6caSJeff Kirsher } 1274b955f6caSJeff Kirsher } 1275b955f6caSJeff Kirsher 1276b955f6caSJeff Kirsher /* Ethtool support... */ 1277b955f6caSJeff Kirsher static void sparc_lance_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 1278b955f6caSJeff Kirsher { 1279f029c781SWolfram Sang strscpy(info->driver, "sunlance", sizeof(info->driver)); 1280b955f6caSJeff Kirsher } 1281b955f6caSJeff Kirsher 1282b955f6caSJeff Kirsher static const struct ethtool_ops sparc_lance_ethtool_ops = { 1283b955f6caSJeff Kirsher .get_drvinfo = sparc_lance_get_drvinfo, 1284b955f6caSJeff Kirsher .get_link = ethtool_op_get_link, 1285b955f6caSJeff Kirsher }; 1286b955f6caSJeff Kirsher 1287b955f6caSJeff Kirsher static const struct net_device_ops sparc_lance_ops = { 1288b955f6caSJeff Kirsher .ndo_open = lance_open, 1289b955f6caSJeff Kirsher .ndo_stop = lance_close, 1290b955f6caSJeff Kirsher .ndo_start_xmit = lance_start_xmit, 1291afc4b13dSJiri Pirko .ndo_set_rx_mode = lance_set_multicast, 1292b955f6caSJeff Kirsher .ndo_tx_timeout = lance_tx_timeout, 1293b955f6caSJeff Kirsher .ndo_set_mac_address = eth_mac_addr, 1294b955f6caSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 1295b955f6caSJeff Kirsher }; 1296b955f6caSJeff Kirsher 12970cb0568dSBill Pemberton static int sparc_lance_probe_one(struct platform_device *op, 1298b955f6caSJeff Kirsher struct platform_device *ledma, 1299b955f6caSJeff Kirsher struct platform_device *lebuffer) 1300b955f6caSJeff Kirsher { 1301b955f6caSJeff Kirsher struct device_node *dp = op->dev.of_node; 1302b955f6caSJeff Kirsher struct lance_private *lp; 1303b955f6caSJeff Kirsher struct net_device *dev; 1304b955f6caSJeff Kirsher 1305b955f6caSJeff Kirsher dev = alloc_etherdev(sizeof(struct lance_private) + 8); 1306b955f6caSJeff Kirsher if (!dev) 1307b955f6caSJeff Kirsher return -ENOMEM; 1308b955f6caSJeff Kirsher 1309b955f6caSJeff Kirsher lp = netdev_priv(dev); 1310b955f6caSJeff Kirsher 1311b955f6caSJeff Kirsher spin_lock_init(&lp->lock); 1312b955f6caSJeff Kirsher 1313b955f6caSJeff Kirsher /* Copy the IDPROM ethernet address to the device structure, later we 1314b955f6caSJeff Kirsher * will copy the address in the device structure to the lance 1315b955f6caSJeff Kirsher * initialization block. 1316b955f6caSJeff Kirsher */ 1317562ef98aSJakub Kicinski eth_hw_addr_set(dev, idprom->id_ethaddr); 1318b955f6caSJeff Kirsher 1319b955f6caSJeff Kirsher /* Get the IO region */ 1320b955f6caSJeff Kirsher lp->lregs = of_ioremap(&op->resource[0], 0, 1321b955f6caSJeff Kirsher LANCE_REG_SIZE, lancestr); 1322b955f6caSJeff Kirsher if (!lp->lregs) { 1323b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map registers.\n"); 1324b955f6caSJeff Kirsher goto fail; 1325b955f6caSJeff Kirsher } 1326b955f6caSJeff Kirsher 1327b955f6caSJeff Kirsher lp->ledma = ledma; 1328b955f6caSJeff Kirsher if (lp->ledma) { 1329b955f6caSJeff Kirsher lp->dregs = of_ioremap(&ledma->resource[0], 0, 1330b955f6caSJeff Kirsher resource_size(&ledma->resource[0]), 1331b955f6caSJeff Kirsher "ledma"); 1332b955f6caSJeff Kirsher if (!lp->dregs) { 1333b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map " 1334b955f6caSJeff Kirsher "ledma registers.\n"); 1335b955f6caSJeff Kirsher goto fail; 1336b955f6caSJeff Kirsher } 1337b955f6caSJeff Kirsher } 1338b955f6caSJeff Kirsher 1339b955f6caSJeff Kirsher lp->op = op; 1340b955f6caSJeff Kirsher lp->lebuffer = lebuffer; 1341b955f6caSJeff Kirsher if (lebuffer) { 1342b955f6caSJeff Kirsher /* sanity check */ 1343b955f6caSJeff Kirsher if (lebuffer->resource[0].start & 7) { 1344b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: ERROR: Rx and Tx rings not on even boundary.\n"); 1345b955f6caSJeff Kirsher goto fail; 1346b955f6caSJeff Kirsher } 1347b955f6caSJeff Kirsher lp->init_block_iomem = 1348b955f6caSJeff Kirsher of_ioremap(&lebuffer->resource[0], 0, 1349b955f6caSJeff Kirsher sizeof(struct lance_init_block), "lebuffer"); 1350b955f6caSJeff Kirsher if (!lp->init_block_iomem) { 1351b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map PIO buffer.\n"); 1352b955f6caSJeff Kirsher goto fail; 1353b955f6caSJeff Kirsher } 1354b955f6caSJeff Kirsher lp->init_block_dvma = 0; 1355b955f6caSJeff Kirsher lp->pio_buffer = 1; 1356b955f6caSJeff Kirsher lp->init_ring = lance_init_ring_pio; 1357b955f6caSJeff Kirsher lp->rx = lance_rx_pio; 1358b955f6caSJeff Kirsher lp->tx = lance_tx_pio; 1359b955f6caSJeff Kirsher } else { 1360b955f6caSJeff Kirsher lp->init_block_mem = 1361b955f6caSJeff Kirsher dma_alloc_coherent(&op->dev, 1362b955f6caSJeff Kirsher sizeof(struct lance_init_block), 1363b955f6caSJeff Kirsher &lp->init_block_dvma, GFP_ATOMIC); 1364d0320f75SJoe Perches if (!lp->init_block_mem) 1365b955f6caSJeff Kirsher goto fail; 1366d0320f75SJoe Perches 1367b955f6caSJeff Kirsher lp->pio_buffer = 0; 1368b955f6caSJeff Kirsher lp->init_ring = lance_init_ring_dvma; 1369b955f6caSJeff Kirsher lp->rx = lance_rx_dvma; 1370b955f6caSJeff Kirsher lp->tx = lance_tx_dvma; 1371b955f6caSJeff Kirsher } 1372b955f6caSJeff Kirsher lp->busmaster_regval = of_getintprop_default(dp, "busmaster-regval", 1373b955f6caSJeff Kirsher (LE_C3_BSWP | 1374b955f6caSJeff Kirsher LE_C3_ACON | 1375b955f6caSJeff Kirsher LE_C3_BCON)); 1376b955f6caSJeff Kirsher 1377b955f6caSJeff Kirsher lp->name = lancestr; 1378b955f6caSJeff Kirsher 1379b955f6caSJeff Kirsher lp->burst_sizes = 0; 1380b955f6caSJeff Kirsher if (lp->ledma) { 1381b955f6caSJeff Kirsher struct device_node *ledma_dp = ledma->dev.of_node; 1382b955f6caSJeff Kirsher struct device_node *sbus_dp; 1383b955f6caSJeff Kirsher unsigned int sbmask; 1384b955f6caSJeff Kirsher const char *prop; 1385b955f6caSJeff Kirsher u32 csr; 1386b955f6caSJeff Kirsher 1387b955f6caSJeff Kirsher /* Find burst-size property for ledma */ 1388b955f6caSJeff Kirsher lp->burst_sizes = of_getintprop_default(ledma_dp, 1389b955f6caSJeff Kirsher "burst-sizes", 0); 1390b955f6caSJeff Kirsher 1391b955f6caSJeff Kirsher /* ledma may be capable of fast bursts, but sbus may not. */ 1392b955f6caSJeff Kirsher sbus_dp = ledma_dp->parent; 1393b955f6caSJeff Kirsher sbmask = of_getintprop_default(sbus_dp, "burst-sizes", 1394b955f6caSJeff Kirsher DMA_BURSTBITS); 1395b955f6caSJeff Kirsher lp->burst_sizes &= sbmask; 1396b955f6caSJeff Kirsher 1397b955f6caSJeff Kirsher /* Get the cable-selection property */ 1398b955f6caSJeff Kirsher prop = of_get_property(ledma_dp, "cable-selection", NULL); 1399b955f6caSJeff Kirsher if (!prop || prop[0] == '\0') { 1400b955f6caSJeff Kirsher struct device_node *nd; 1401b955f6caSJeff Kirsher 1402b955f6caSJeff Kirsher printk(KERN_INFO "SunLance: using " 1403b955f6caSJeff Kirsher "auto-carrier-detection.\n"); 1404b955f6caSJeff Kirsher 1405b955f6caSJeff Kirsher nd = of_find_node_by_path("/options"); 1406b955f6caSJeff Kirsher if (!nd) 1407b955f6caSJeff Kirsher goto no_link_test; 1408b955f6caSJeff Kirsher 1409b955f6caSJeff Kirsher prop = of_get_property(nd, "tpe-link-test?", NULL); 1410b955f6caSJeff Kirsher if (!prop) 1411c44c749dSYangtao Li goto node_put; 1412b955f6caSJeff Kirsher 1413b955f6caSJeff Kirsher if (strcmp(prop, "true")) { 1414b955f6caSJeff Kirsher printk(KERN_NOTICE "SunLance: warning: overriding option " 1415b955f6caSJeff Kirsher "'tpe-link-test?'\n"); 1416b955f6caSJeff Kirsher printk(KERN_NOTICE "SunLance: warning: mail any problems " 1417b955f6caSJeff Kirsher "to ecd@skynet.be\n"); 1418b955f6caSJeff Kirsher auxio_set_lte(AUXIO_LTE_ON); 1419b955f6caSJeff Kirsher } 1420c44c749dSYangtao Li node_put: 1421c44c749dSYangtao Li of_node_put(nd); 1422b955f6caSJeff Kirsher no_link_test: 1423b955f6caSJeff Kirsher lp->auto_select = 1; 1424b955f6caSJeff Kirsher lp->tpe = 0; 1425b955f6caSJeff Kirsher } else if (!strcmp(prop, "aui")) { 1426b955f6caSJeff Kirsher lp->auto_select = 0; 1427b955f6caSJeff Kirsher lp->tpe = 0; 1428b955f6caSJeff Kirsher } else { 1429b955f6caSJeff Kirsher lp->auto_select = 0; 1430b955f6caSJeff Kirsher lp->tpe = 1; 1431b955f6caSJeff Kirsher } 1432b955f6caSJeff Kirsher 1433b955f6caSJeff Kirsher /* Reset ledma */ 1434b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 1435b955f6caSJeff Kirsher sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); 1436b955f6caSJeff Kirsher udelay(200); 1437b955f6caSJeff Kirsher sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); 1438b955f6caSJeff Kirsher } else 1439b955f6caSJeff Kirsher lp->dregs = NULL; 1440b955f6caSJeff Kirsher 1441b955f6caSJeff Kirsher lp->dev = dev; 1442b955f6caSJeff Kirsher SET_NETDEV_DEV(dev, &op->dev); 1443b955f6caSJeff Kirsher dev->watchdog_timeo = 5*HZ; 1444b955f6caSJeff Kirsher dev->ethtool_ops = &sparc_lance_ethtool_ops; 1445b955f6caSJeff Kirsher dev->netdev_ops = &sparc_lance_ops; 1446b955f6caSJeff Kirsher 1447b955f6caSJeff Kirsher dev->irq = op->archdata.irqs[0]; 1448b955f6caSJeff Kirsher 1449b955f6caSJeff Kirsher /* We cannot sleep if the chip is busy during a 1450b955f6caSJeff Kirsher * multicast list update event, because such events 1451b955f6caSJeff Kirsher * can occur from interrupts (ex. IPv6). So we 1452b955f6caSJeff Kirsher * use a timer to try again later when necessary. -DaveM 1453b955f6caSJeff Kirsher */ 1454c6c52ba1SKees Cook timer_setup(&lp->multicast_timer, lance_set_multicast_retry, 0); 1455b955f6caSJeff Kirsher 1456b955f6caSJeff Kirsher if (register_netdev(dev)) { 1457b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot register device.\n"); 1458b955f6caSJeff Kirsher goto fail; 1459b955f6caSJeff Kirsher } 1460b955f6caSJeff Kirsher 14618513fbd8SJingoo Han platform_set_drvdata(op, lp); 1462b955f6caSJeff Kirsher 1463b955f6caSJeff Kirsher printk(KERN_INFO "%s: LANCE %pM\n", 1464b955f6caSJeff Kirsher dev->name, dev->dev_addr); 1465b955f6caSJeff Kirsher 1466b955f6caSJeff Kirsher return 0; 1467b955f6caSJeff Kirsher 1468b955f6caSJeff Kirsher fail: 1469b955f6caSJeff Kirsher lance_free_hwresources(lp); 1470b955f6caSJeff Kirsher free_netdev(dev); 1471b955f6caSJeff Kirsher return -ENODEV; 1472b955f6caSJeff Kirsher } 1473b955f6caSJeff Kirsher 14740cb0568dSBill Pemberton static int sunlance_sbus_probe(struct platform_device *op) 1475b955f6caSJeff Kirsher { 1476b955f6caSJeff Kirsher struct platform_device *parent = to_platform_device(op->dev.parent); 1477b955f6caSJeff Kirsher struct device_node *parent_dp = parent->dev.of_node; 1478b955f6caSJeff Kirsher int err; 1479b955f6caSJeff Kirsher 1480bf5849f1SRob Herring if (of_node_name_eq(parent_dp, "ledma")) { 1481b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, parent, NULL); 1482bf5849f1SRob Herring } else if (of_node_name_eq(parent_dp, "lebuffer")) { 1483b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, NULL, parent); 1484b955f6caSJeff Kirsher } else 1485b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, NULL, NULL); 1486b955f6caSJeff Kirsher 1487b955f6caSJeff Kirsher return err; 1488b955f6caSJeff Kirsher } 1489b955f6caSJeff Kirsher 14900cb0568dSBill Pemberton static int sunlance_sbus_remove(struct platform_device *op) 1491b955f6caSJeff Kirsher { 14928513fbd8SJingoo Han struct lance_private *lp = platform_get_drvdata(op); 1493b955f6caSJeff Kirsher struct net_device *net_dev = lp->dev; 1494b955f6caSJeff Kirsher 1495b955f6caSJeff Kirsher unregister_netdev(net_dev); 1496b955f6caSJeff Kirsher 1497b955f6caSJeff Kirsher lance_free_hwresources(lp); 1498b955f6caSJeff Kirsher 1499b955f6caSJeff Kirsher free_netdev(net_dev); 1500b955f6caSJeff Kirsher 1501b955f6caSJeff Kirsher return 0; 1502b955f6caSJeff Kirsher } 1503b955f6caSJeff Kirsher 1504b955f6caSJeff Kirsher static const struct of_device_id sunlance_sbus_match[] = { 1505b955f6caSJeff Kirsher { 1506b955f6caSJeff Kirsher .name = "le", 1507b955f6caSJeff Kirsher }, 1508b955f6caSJeff Kirsher {}, 1509b955f6caSJeff Kirsher }; 1510b955f6caSJeff Kirsher 1511b955f6caSJeff Kirsher MODULE_DEVICE_TABLE(of, sunlance_sbus_match); 1512b955f6caSJeff Kirsher 1513b955f6caSJeff Kirsher static struct platform_driver sunlance_sbus_driver = { 1514b955f6caSJeff Kirsher .driver = { 1515b955f6caSJeff Kirsher .name = "sunlance", 1516b955f6caSJeff Kirsher .of_match_table = sunlance_sbus_match, 1517b955f6caSJeff Kirsher }, 1518b955f6caSJeff Kirsher .probe = sunlance_sbus_probe, 15190cb0568dSBill Pemberton .remove = sunlance_sbus_remove, 1520b955f6caSJeff Kirsher }; 1521b955f6caSJeff Kirsher 1522db62f684SAxel Lin module_platform_driver(sunlance_sbus_driver); 1523