1b955f6caSJeff Kirsher /* $Id: sunlance.c,v 1.112 2002/01/15 06:48:55 davem Exp $ 2b955f6caSJeff Kirsher * lance.c: Linux/Sparc/Lance driver 3b955f6caSJeff Kirsher * 4b955f6caSJeff Kirsher * Written 1995, 1996 by Miguel de Icaza 5b955f6caSJeff Kirsher * Sources: 6b955f6caSJeff Kirsher * The Linux depca driver 7b955f6caSJeff Kirsher * The Linux lance driver. 8b955f6caSJeff Kirsher * The Linux skeleton driver. 9b955f6caSJeff Kirsher * The NetBSD Sparc/Lance driver. 10b955f6caSJeff Kirsher * Theo de Raadt (deraadt@openbsd.org) 11b955f6caSJeff Kirsher * NCR92C990 Lan Controller manual 12b955f6caSJeff Kirsher * 13b955f6caSJeff Kirsher * 1.4: 14b955f6caSJeff Kirsher * Added support to run with a ledma on the Sun4m 15b955f6caSJeff Kirsher * 16b955f6caSJeff Kirsher * 1.5: 17b955f6caSJeff Kirsher * Added multiple card detection. 18b955f6caSJeff Kirsher * 19b955f6caSJeff Kirsher * 4/17/96: Burst sizes and tpe selection on sun4m by Eddie C. Dost 20b955f6caSJeff Kirsher * (ecd@skynet.be) 21b955f6caSJeff Kirsher * 22b955f6caSJeff Kirsher * 5/15/96: auto carrier detection on sun4m by Eddie C. Dost 23b955f6caSJeff Kirsher * (ecd@skynet.be) 24b955f6caSJeff Kirsher * 25b955f6caSJeff Kirsher * 5/17/96: lebuffer on scsi/ether cards now work David S. Miller 26b955f6caSJeff Kirsher * (davem@caip.rutgers.edu) 27b955f6caSJeff Kirsher * 28b955f6caSJeff Kirsher * 5/29/96: override option 'tpe-link-test?', if it is 'false', as 29b955f6caSJeff Kirsher * this disables auto carrier detection on sun4m. Eddie C. Dost 30b955f6caSJeff Kirsher * (ecd@skynet.be) 31b955f6caSJeff Kirsher * 32b955f6caSJeff Kirsher * 1.7: 33b955f6caSJeff Kirsher * 6/26/96: Bug fix for multiple ledmas, miguel. 34b955f6caSJeff Kirsher * 35b955f6caSJeff Kirsher * 1.8: 36b955f6caSJeff Kirsher * Stole multicast code from depca.c, fixed lance_tx. 37b955f6caSJeff Kirsher * 38b955f6caSJeff Kirsher * 1.9: 39b955f6caSJeff Kirsher * 8/21/96: Fixed the multicast code (Pedro Roque) 40b955f6caSJeff Kirsher * 41b955f6caSJeff Kirsher * 8/28/96: Send fake packet in lance_open() if auto_select is true, 42b955f6caSJeff Kirsher * so we can detect the carrier loss condition in time. 43b955f6caSJeff Kirsher * Eddie C. Dost (ecd@skynet.be) 44b955f6caSJeff Kirsher * 45b955f6caSJeff Kirsher * 9/15/96: Align rx_buf so that eth_copy_and_sum() won't cause an 46b955f6caSJeff Kirsher * MNA trap during chksum_partial_copy(). (ecd@skynet.be) 47b955f6caSJeff Kirsher * 48b955f6caSJeff Kirsher * 11/17/96: Handle LE_C0_MERR in lance_interrupt(). (ecd@skynet.be) 49b955f6caSJeff Kirsher * 50b955f6caSJeff Kirsher * 12/22/96: Don't loop forever in lance_rx() on incomplete packets. 51b955f6caSJeff Kirsher * This was the sun4c killer. Shit, stupid bug. 52b955f6caSJeff Kirsher * (ecd@skynet.be) 53b955f6caSJeff Kirsher * 54b955f6caSJeff Kirsher * 1.10: 55b955f6caSJeff Kirsher * 1/26/97: Modularize driver. (ecd@skynet.be) 56b955f6caSJeff Kirsher * 57b955f6caSJeff Kirsher * 1.11: 58b955f6caSJeff Kirsher * 12/27/97: Added sun4d support. (jj@sunsite.mff.cuni.cz) 59b955f6caSJeff Kirsher * 60b955f6caSJeff Kirsher * 1.12: 61b955f6caSJeff Kirsher * 11/3/99: Fixed SMP race in lance_start_xmit found by davem. 62b955f6caSJeff Kirsher * Anton Blanchard (anton@progsoc.uts.edu.au) 63b955f6caSJeff Kirsher * 2.00: 11/9/99: Massive overhaul and port to new SBUS driver interfaces. 64b955f6caSJeff Kirsher * David S. Miller (davem@redhat.com) 65b955f6caSJeff Kirsher * 2.01: 66b955f6caSJeff Kirsher * 11/08/01: Use library crc32 functions (Matt_Domsch@dell.com) 67b955f6caSJeff Kirsher * 68b955f6caSJeff Kirsher */ 69b955f6caSJeff Kirsher 70b955f6caSJeff Kirsher #undef DEBUG_DRIVER 71b955f6caSJeff Kirsher 72b955f6caSJeff Kirsher static char lancestr[] = "LANCE"; 73b955f6caSJeff Kirsher 74b955f6caSJeff Kirsher #include <linux/module.h> 75b955f6caSJeff Kirsher #include <linux/kernel.h> 76b955f6caSJeff Kirsher #include <linux/types.h> 77b955f6caSJeff Kirsher #include <linux/fcntl.h> 78b955f6caSJeff Kirsher #include <linux/interrupt.h> 79b955f6caSJeff Kirsher #include <linux/ioport.h> 80b955f6caSJeff Kirsher #include <linux/in.h> 81b955f6caSJeff Kirsher #include <linux/string.h> 82b955f6caSJeff Kirsher #include <linux/delay.h> 83b955f6caSJeff Kirsher #include <linux/crc32.h> 84b955f6caSJeff Kirsher #include <linux/errno.h> 85b955f6caSJeff Kirsher #include <linux/socket.h> /* Used for the temporal inet entries and routing */ 86b955f6caSJeff Kirsher #include <linux/route.h> 87b955f6caSJeff Kirsher #include <linux/netdevice.h> 88b955f6caSJeff Kirsher #include <linux/etherdevice.h> 89b955f6caSJeff Kirsher #include <linux/skbuff.h> 90b955f6caSJeff Kirsher #include <linux/ethtool.h> 91b955f6caSJeff Kirsher #include <linux/bitops.h> 92b955f6caSJeff Kirsher #include <linux/dma-mapping.h> 93b955f6caSJeff Kirsher #include <linux/of.h> 94b955f6caSJeff Kirsher #include <linux/of_device.h> 95b955f6caSJeff Kirsher #include <linux/gfp.h> 96b955f6caSJeff Kirsher 97b955f6caSJeff Kirsher #include <asm/io.h> 98b955f6caSJeff Kirsher #include <asm/dma.h> 99b955f6caSJeff Kirsher #include <asm/pgtable.h> 100b955f6caSJeff Kirsher #include <asm/byteorder.h> /* Used by the checksum routines */ 101b955f6caSJeff Kirsher #include <asm/idprom.h> 102b955f6caSJeff Kirsher #include <asm/prom.h> 103b955f6caSJeff Kirsher #include <asm/auxio.h> /* For tpe-link-test? setting */ 104b955f6caSJeff Kirsher #include <asm/irq.h> 105b955f6caSJeff Kirsher 106b955f6caSJeff Kirsher #define DRV_NAME "sunlance" 107b955f6caSJeff Kirsher #define DRV_VERSION "2.02" 108b955f6caSJeff Kirsher #define DRV_RELDATE "8/24/03" 109b955f6caSJeff Kirsher #define DRV_AUTHOR "Miguel de Icaza (miguel@nuclecu.unam.mx)" 110b955f6caSJeff Kirsher 111b955f6caSJeff Kirsher static char version[] = 112b955f6caSJeff Kirsher DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " " DRV_AUTHOR "\n"; 113b955f6caSJeff Kirsher 114b955f6caSJeff Kirsher MODULE_VERSION(DRV_VERSION); 115b955f6caSJeff Kirsher MODULE_AUTHOR(DRV_AUTHOR); 116b955f6caSJeff Kirsher MODULE_DESCRIPTION("Sun Lance ethernet driver"); 117b955f6caSJeff Kirsher MODULE_LICENSE("GPL"); 118b955f6caSJeff Kirsher 119b955f6caSJeff Kirsher /* Define: 2^4 Tx buffers and 2^4 Rx buffers */ 120b955f6caSJeff Kirsher #ifndef LANCE_LOG_TX_BUFFERS 121b955f6caSJeff Kirsher #define LANCE_LOG_TX_BUFFERS 4 122b955f6caSJeff Kirsher #define LANCE_LOG_RX_BUFFERS 4 123b955f6caSJeff Kirsher #endif 124b955f6caSJeff Kirsher 125b955f6caSJeff Kirsher #define LE_CSR0 0 126b955f6caSJeff Kirsher #define LE_CSR1 1 127b955f6caSJeff Kirsher #define LE_CSR2 2 128b955f6caSJeff Kirsher #define LE_CSR3 3 129b955f6caSJeff Kirsher 130b955f6caSJeff Kirsher #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ 131b955f6caSJeff Kirsher 132b955f6caSJeff Kirsher #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ 133b955f6caSJeff Kirsher #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ 134b955f6caSJeff Kirsher #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ 135b955f6caSJeff Kirsher #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ 136b955f6caSJeff Kirsher #define LE_C0_MERR 0x0800 /* ME: Memory error */ 137b955f6caSJeff Kirsher #define LE_C0_RINT 0x0400 /* Received interrupt */ 138b955f6caSJeff Kirsher #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ 139b955f6caSJeff Kirsher #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ 140b955f6caSJeff Kirsher #define LE_C0_INTR 0x0080 /* Interrupt or error */ 141b955f6caSJeff Kirsher #define LE_C0_INEA 0x0040 /* Interrupt enable */ 142b955f6caSJeff Kirsher #define LE_C0_RXON 0x0020 /* Receiver on */ 143b955f6caSJeff Kirsher #define LE_C0_TXON 0x0010 /* Transmitter on */ 144b955f6caSJeff Kirsher #define LE_C0_TDMD 0x0008 /* Transmitter demand */ 145b955f6caSJeff Kirsher #define LE_C0_STOP 0x0004 /* Stop the card */ 146b955f6caSJeff Kirsher #define LE_C0_STRT 0x0002 /* Start the card */ 147b955f6caSJeff Kirsher #define LE_C0_INIT 0x0001 /* Init the card */ 148b955f6caSJeff Kirsher 149b955f6caSJeff Kirsher #define LE_C3_BSWP 0x4 /* SWAP */ 150b955f6caSJeff Kirsher #define LE_C3_ACON 0x2 /* ALE Control */ 151b955f6caSJeff Kirsher #define LE_C3_BCON 0x1 /* Byte control */ 152b955f6caSJeff Kirsher 153b955f6caSJeff Kirsher /* Receive message descriptor 1 */ 154b955f6caSJeff Kirsher #define LE_R1_OWN 0x80 /* Who owns the entry */ 155b955f6caSJeff Kirsher #define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */ 156b955f6caSJeff Kirsher #define LE_R1_FRA 0x20 /* FRA: Frame error */ 157b955f6caSJeff Kirsher #define LE_R1_OFL 0x10 /* OFL: Frame overflow */ 158b955f6caSJeff Kirsher #define LE_R1_CRC 0x08 /* CRC error */ 159b955f6caSJeff Kirsher #define LE_R1_BUF 0x04 /* BUF: Buffer error */ 160b955f6caSJeff Kirsher #define LE_R1_SOP 0x02 /* Start of packet */ 161b955f6caSJeff Kirsher #define LE_R1_EOP 0x01 /* End of packet */ 162b955f6caSJeff Kirsher #define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ 163b955f6caSJeff Kirsher 164b955f6caSJeff Kirsher #define LE_T1_OWN 0x80 /* Lance owns the packet */ 165b955f6caSJeff Kirsher #define LE_T1_ERR 0x40 /* Error summary */ 166b955f6caSJeff Kirsher #define LE_T1_EMORE 0x10 /* Error: more than one retry needed */ 167b955f6caSJeff Kirsher #define LE_T1_EONE 0x08 /* Error: one retry needed */ 168b955f6caSJeff Kirsher #define LE_T1_EDEF 0x04 /* Error: deferred */ 169b955f6caSJeff Kirsher #define LE_T1_SOP 0x02 /* Start of packet */ 170b955f6caSJeff Kirsher #define LE_T1_EOP 0x01 /* End of packet */ 171b955f6caSJeff Kirsher #define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ 172b955f6caSJeff Kirsher 173b955f6caSJeff Kirsher #define LE_T3_BUF 0x8000 /* Buffer error */ 174b955f6caSJeff Kirsher #define LE_T3_UFL 0x4000 /* Error underflow */ 175b955f6caSJeff Kirsher #define LE_T3_LCOL 0x1000 /* Error late collision */ 176b955f6caSJeff Kirsher #define LE_T3_CLOS 0x0800 /* Error carrier loss */ 177b955f6caSJeff Kirsher #define LE_T3_RTY 0x0400 /* Error retry */ 178b955f6caSJeff Kirsher #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ 179b955f6caSJeff Kirsher 180b955f6caSJeff Kirsher #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) 181b955f6caSJeff Kirsher #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) 182b955f6caSJeff Kirsher #define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) 183b955f6caSJeff Kirsher #define TX_NEXT(__x) (((__x)+1) & TX_RING_MOD_MASK) 184b955f6caSJeff Kirsher 185b955f6caSJeff Kirsher #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) 186b955f6caSJeff Kirsher #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) 187b955f6caSJeff Kirsher #define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) 188b955f6caSJeff Kirsher #define RX_NEXT(__x) (((__x)+1) & RX_RING_MOD_MASK) 189b955f6caSJeff Kirsher 190b955f6caSJeff Kirsher #define PKT_BUF_SZ 1544 191b955f6caSJeff Kirsher #define RX_BUFF_SIZE PKT_BUF_SZ 192b955f6caSJeff Kirsher #define TX_BUFF_SIZE PKT_BUF_SZ 193b955f6caSJeff Kirsher 194b955f6caSJeff Kirsher struct lance_rx_desc { 195b955f6caSJeff Kirsher u16 rmd0; /* low address of packet */ 196b955f6caSJeff Kirsher u8 rmd1_bits; /* descriptor bits */ 197b955f6caSJeff Kirsher u8 rmd1_hadr; /* high address of packet */ 198b955f6caSJeff Kirsher s16 length; /* This length is 2s complement (negative)! 199b955f6caSJeff Kirsher * Buffer length 200b955f6caSJeff Kirsher */ 201b955f6caSJeff Kirsher u16 mblength; /* This is the actual number of bytes received */ 202b955f6caSJeff Kirsher }; 203b955f6caSJeff Kirsher 204b955f6caSJeff Kirsher struct lance_tx_desc { 205b955f6caSJeff Kirsher u16 tmd0; /* low address of packet */ 206b955f6caSJeff Kirsher u8 tmd1_bits; /* descriptor bits */ 207b955f6caSJeff Kirsher u8 tmd1_hadr; /* high address of packet */ 208b955f6caSJeff Kirsher s16 length; /* Length is 2s complement (negative)! */ 209b955f6caSJeff Kirsher u16 misc; 210b955f6caSJeff Kirsher }; 211b955f6caSJeff Kirsher 212b955f6caSJeff Kirsher /* The LANCE initialization block, described in databook. */ 213b955f6caSJeff Kirsher /* On the Sparc, this block should be on a DMA region */ 214b955f6caSJeff Kirsher struct lance_init_block { 215b955f6caSJeff Kirsher u16 mode; /* Pre-set mode (reg. 15) */ 216b955f6caSJeff Kirsher u8 phys_addr[6]; /* Physical ethernet address */ 217b955f6caSJeff Kirsher u32 filter[2]; /* Multicast filter. */ 218b955f6caSJeff Kirsher 219b955f6caSJeff Kirsher /* Receive and transmit ring base, along with extra bits. */ 220b955f6caSJeff Kirsher u16 rx_ptr; /* receive descriptor addr */ 221b955f6caSJeff Kirsher u16 rx_len; /* receive len and high addr */ 222b955f6caSJeff Kirsher u16 tx_ptr; /* transmit descriptor addr */ 223b955f6caSJeff Kirsher u16 tx_len; /* transmit len and high addr */ 224b955f6caSJeff Kirsher 225b955f6caSJeff Kirsher /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ 226b955f6caSJeff Kirsher struct lance_rx_desc brx_ring[RX_RING_SIZE]; 227b955f6caSJeff Kirsher struct lance_tx_desc btx_ring[TX_RING_SIZE]; 228b955f6caSJeff Kirsher 229b955f6caSJeff Kirsher u8 tx_buf [TX_RING_SIZE][TX_BUFF_SIZE]; 230b955f6caSJeff Kirsher u8 pad[2]; /* align rx_buf for copy_and_sum(). */ 231b955f6caSJeff Kirsher u8 rx_buf [RX_RING_SIZE][RX_BUFF_SIZE]; 232b955f6caSJeff Kirsher }; 233b955f6caSJeff Kirsher 234b955f6caSJeff Kirsher #define libdesc_offset(rt, elem) \ 235b955f6caSJeff Kirsher ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem]))))) 236b955f6caSJeff Kirsher 237b955f6caSJeff Kirsher #define libbuff_offset(rt, elem) \ 238b955f6caSJeff Kirsher ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem][0]))))) 239b955f6caSJeff Kirsher 240b955f6caSJeff Kirsher struct lance_private { 241b955f6caSJeff Kirsher void __iomem *lregs; /* Lance RAP/RDP regs. */ 242b955f6caSJeff Kirsher void __iomem *dregs; /* DMA controller regs. */ 243b955f6caSJeff Kirsher struct lance_init_block __iomem *init_block_iomem; 244b955f6caSJeff Kirsher struct lance_init_block *init_block_mem; 245b955f6caSJeff Kirsher 246b955f6caSJeff Kirsher spinlock_t lock; 247b955f6caSJeff Kirsher 248b955f6caSJeff Kirsher int rx_new, tx_new; 249b955f6caSJeff Kirsher int rx_old, tx_old; 250b955f6caSJeff Kirsher 251b955f6caSJeff Kirsher struct platform_device *ledma; /* If set this points to ledma */ 252b955f6caSJeff Kirsher char tpe; /* cable-selection is TPE */ 253b955f6caSJeff Kirsher char auto_select; /* cable-selection by carrier */ 254b955f6caSJeff Kirsher char burst_sizes; /* ledma SBus burst sizes */ 255b955f6caSJeff Kirsher char pio_buffer; /* init block in PIO space? */ 256b955f6caSJeff Kirsher 257b955f6caSJeff Kirsher unsigned short busmaster_regval; 258b955f6caSJeff Kirsher 259b955f6caSJeff Kirsher void (*init_ring)(struct net_device *); 260b955f6caSJeff Kirsher void (*rx)(struct net_device *); 261b955f6caSJeff Kirsher void (*tx)(struct net_device *); 262b955f6caSJeff Kirsher 263b955f6caSJeff Kirsher char *name; 264b955f6caSJeff Kirsher dma_addr_t init_block_dvma; 265b955f6caSJeff Kirsher struct net_device *dev; /* Backpointer */ 266b955f6caSJeff Kirsher struct platform_device *op; 267b955f6caSJeff Kirsher struct platform_device *lebuffer; 268b955f6caSJeff Kirsher struct timer_list multicast_timer; 269b955f6caSJeff Kirsher }; 270b955f6caSJeff Kirsher 271b955f6caSJeff Kirsher #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ 272b955f6caSJeff Kirsher lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ 273b955f6caSJeff Kirsher lp->tx_old - lp->tx_new-1) 274b955f6caSJeff Kirsher 275b955f6caSJeff Kirsher /* Lance registers. */ 276b955f6caSJeff Kirsher #define RDP 0x00UL /* register data port */ 277b955f6caSJeff Kirsher #define RAP 0x02UL /* register address port */ 278b955f6caSJeff Kirsher #define LANCE_REG_SIZE 0x04UL 279b955f6caSJeff Kirsher 280b955f6caSJeff Kirsher #define STOP_LANCE(__lp) \ 281b955f6caSJeff Kirsher do { void __iomem *__base = (__lp)->lregs; \ 282b955f6caSJeff Kirsher sbus_writew(LE_CSR0, __base + RAP); \ 283b955f6caSJeff Kirsher sbus_writew(LE_C0_STOP, __base + RDP); \ 284b955f6caSJeff Kirsher } while (0) 285b955f6caSJeff Kirsher 286b955f6caSJeff Kirsher int sparc_lance_debug = 2; 287b955f6caSJeff Kirsher 288b955f6caSJeff Kirsher /* The Lance uses 24 bit addresses */ 289b955f6caSJeff Kirsher /* On the Sun4c the DVMA will provide the remaining bytes for us */ 290b955f6caSJeff Kirsher /* On the Sun4m we have to instruct the ledma to provide them */ 291b955f6caSJeff Kirsher /* Even worse, on scsi/ether SBUS cards, the init block and the 292b955f6caSJeff Kirsher * transmit/receive buffers are addresses as offsets from absolute 293b955f6caSJeff Kirsher * zero on the lebuffer PIO area. -DaveM 294b955f6caSJeff Kirsher */ 295b955f6caSJeff Kirsher 296b955f6caSJeff Kirsher #define LANCE_ADDR(x) ((long)(x) & ~0xff000000) 297b955f6caSJeff Kirsher 298b955f6caSJeff Kirsher /* Load the CSR registers */ 299b955f6caSJeff Kirsher static void load_csrs(struct lance_private *lp) 300b955f6caSJeff Kirsher { 301b955f6caSJeff Kirsher u32 leptr; 302b955f6caSJeff Kirsher 303b955f6caSJeff Kirsher if (lp->pio_buffer) 304b955f6caSJeff Kirsher leptr = 0; 305b955f6caSJeff Kirsher else 306b955f6caSJeff Kirsher leptr = LANCE_ADDR(lp->init_block_dvma); 307b955f6caSJeff Kirsher 308b955f6caSJeff Kirsher sbus_writew(LE_CSR1, lp->lregs + RAP); 309b955f6caSJeff Kirsher sbus_writew(leptr & 0xffff, lp->lregs + RDP); 310b955f6caSJeff Kirsher sbus_writew(LE_CSR2, lp->lregs + RAP); 311b955f6caSJeff Kirsher sbus_writew(leptr >> 16, lp->lregs + RDP); 312b955f6caSJeff Kirsher sbus_writew(LE_CSR3, lp->lregs + RAP); 313b955f6caSJeff Kirsher sbus_writew(lp->busmaster_regval, lp->lregs + RDP); 314b955f6caSJeff Kirsher 315b955f6caSJeff Kirsher /* Point back to csr0 */ 316b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 317b955f6caSJeff Kirsher } 318b955f6caSJeff Kirsher 319b955f6caSJeff Kirsher /* Setup the Lance Rx and Tx rings */ 320b955f6caSJeff Kirsher static void lance_init_ring_dvma(struct net_device *dev) 321b955f6caSJeff Kirsher { 322b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 323b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 324b955f6caSJeff Kirsher dma_addr_t aib = lp->init_block_dvma; 325b955f6caSJeff Kirsher __u32 leptr; 326b955f6caSJeff Kirsher int i; 327b955f6caSJeff Kirsher 328b955f6caSJeff Kirsher /* Lock out other processes while setting up hardware */ 329b955f6caSJeff Kirsher netif_stop_queue(dev); 330b955f6caSJeff Kirsher lp->rx_new = lp->tx_new = 0; 331b955f6caSJeff Kirsher lp->rx_old = lp->tx_old = 0; 332b955f6caSJeff Kirsher 333b955f6caSJeff Kirsher /* Copy the ethernet address to the lance init block 334b955f6caSJeff Kirsher * Note that on the sparc you need to swap the ethernet address. 335b955f6caSJeff Kirsher */ 336b955f6caSJeff Kirsher ib->phys_addr [0] = dev->dev_addr [1]; 337b955f6caSJeff Kirsher ib->phys_addr [1] = dev->dev_addr [0]; 338b955f6caSJeff Kirsher ib->phys_addr [2] = dev->dev_addr [3]; 339b955f6caSJeff Kirsher ib->phys_addr [3] = dev->dev_addr [2]; 340b955f6caSJeff Kirsher ib->phys_addr [4] = dev->dev_addr [5]; 341b955f6caSJeff Kirsher ib->phys_addr [5] = dev->dev_addr [4]; 342b955f6caSJeff Kirsher 343b955f6caSJeff Kirsher /* Setup the Tx ring entries */ 344b955f6caSJeff Kirsher for (i = 0; i < TX_RING_SIZE; i++) { 345b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libbuff_offset(tx_buf, i)); 346b955f6caSJeff Kirsher ib->btx_ring [i].tmd0 = leptr; 347b955f6caSJeff Kirsher ib->btx_ring [i].tmd1_hadr = leptr >> 16; 348b955f6caSJeff Kirsher ib->btx_ring [i].tmd1_bits = 0; 349b955f6caSJeff Kirsher ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ 350b955f6caSJeff Kirsher ib->btx_ring [i].misc = 0; 351b955f6caSJeff Kirsher } 352b955f6caSJeff Kirsher 353b955f6caSJeff Kirsher /* Setup the Rx ring entries */ 354b955f6caSJeff Kirsher for (i = 0; i < RX_RING_SIZE; i++) { 355b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libbuff_offset(rx_buf, i)); 356b955f6caSJeff Kirsher 357b955f6caSJeff Kirsher ib->brx_ring [i].rmd0 = leptr; 358b955f6caSJeff Kirsher ib->brx_ring [i].rmd1_hadr = leptr >> 16; 359b955f6caSJeff Kirsher ib->brx_ring [i].rmd1_bits = LE_R1_OWN; 360b955f6caSJeff Kirsher ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; 361b955f6caSJeff Kirsher ib->brx_ring [i].mblength = 0; 362b955f6caSJeff Kirsher } 363b955f6caSJeff Kirsher 364b955f6caSJeff Kirsher /* Setup the initialization block */ 365b955f6caSJeff Kirsher 366b955f6caSJeff Kirsher /* Setup rx descriptor pointer */ 367b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libdesc_offset(brx_ring, 0)); 368b955f6caSJeff Kirsher ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16); 369b955f6caSJeff Kirsher ib->rx_ptr = leptr; 370b955f6caSJeff Kirsher 371b955f6caSJeff Kirsher /* Setup tx descriptor pointer */ 372b955f6caSJeff Kirsher leptr = LANCE_ADDR(aib + libdesc_offset(btx_ring, 0)); 373b955f6caSJeff Kirsher ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16); 374b955f6caSJeff Kirsher ib->tx_ptr = leptr; 375b955f6caSJeff Kirsher } 376b955f6caSJeff Kirsher 377b955f6caSJeff Kirsher static void lance_init_ring_pio(struct net_device *dev) 378b955f6caSJeff Kirsher { 379b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 380b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 381b955f6caSJeff Kirsher u32 leptr; 382b955f6caSJeff Kirsher int i; 383b955f6caSJeff Kirsher 384b955f6caSJeff Kirsher /* Lock out other processes while setting up hardware */ 385b955f6caSJeff Kirsher netif_stop_queue(dev); 386b955f6caSJeff Kirsher lp->rx_new = lp->tx_new = 0; 387b955f6caSJeff Kirsher lp->rx_old = lp->tx_old = 0; 388b955f6caSJeff Kirsher 389b955f6caSJeff Kirsher /* Copy the ethernet address to the lance init block 390b955f6caSJeff Kirsher * Note that on the sparc you need to swap the ethernet address. 391b955f6caSJeff Kirsher */ 392b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[1], &ib->phys_addr[0]); 393b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[0], &ib->phys_addr[1]); 394b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[3], &ib->phys_addr[2]); 395b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[2], &ib->phys_addr[3]); 396b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[5], &ib->phys_addr[4]); 397b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[4], &ib->phys_addr[5]); 398b955f6caSJeff Kirsher 399b955f6caSJeff Kirsher /* Setup the Tx ring entries */ 400b955f6caSJeff Kirsher for (i = 0; i < TX_RING_SIZE; i++) { 401b955f6caSJeff Kirsher leptr = libbuff_offset(tx_buf, i); 402b955f6caSJeff Kirsher sbus_writew(leptr, &ib->btx_ring [i].tmd0); 403b955f6caSJeff Kirsher sbus_writeb(leptr >> 16,&ib->btx_ring [i].tmd1_hadr); 404b955f6caSJeff Kirsher sbus_writeb(0, &ib->btx_ring [i].tmd1_bits); 405b955f6caSJeff Kirsher 406b955f6caSJeff Kirsher /* The ones required by tmd2 */ 407b955f6caSJeff Kirsher sbus_writew(0xf000, &ib->btx_ring [i].length); 408b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring [i].misc); 409b955f6caSJeff Kirsher } 410b955f6caSJeff Kirsher 411b955f6caSJeff Kirsher /* Setup the Rx ring entries */ 412b955f6caSJeff Kirsher for (i = 0; i < RX_RING_SIZE; i++) { 413b955f6caSJeff Kirsher leptr = libbuff_offset(rx_buf, i); 414b955f6caSJeff Kirsher 415b955f6caSJeff Kirsher sbus_writew(leptr, &ib->brx_ring [i].rmd0); 416b955f6caSJeff Kirsher sbus_writeb(leptr >> 16,&ib->brx_ring [i].rmd1_hadr); 417b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &ib->brx_ring [i].rmd1_bits); 418b955f6caSJeff Kirsher sbus_writew(-RX_BUFF_SIZE|0xf000, 419b955f6caSJeff Kirsher &ib->brx_ring [i].length); 420b955f6caSJeff Kirsher sbus_writew(0, &ib->brx_ring [i].mblength); 421b955f6caSJeff Kirsher } 422b955f6caSJeff Kirsher 423b955f6caSJeff Kirsher /* Setup the initialization block */ 424b955f6caSJeff Kirsher 425b955f6caSJeff Kirsher /* Setup rx descriptor pointer */ 426b955f6caSJeff Kirsher leptr = libdesc_offset(brx_ring, 0); 427b955f6caSJeff Kirsher sbus_writew((LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16), 428b955f6caSJeff Kirsher &ib->rx_len); 429b955f6caSJeff Kirsher sbus_writew(leptr, &ib->rx_ptr); 430b955f6caSJeff Kirsher 431b955f6caSJeff Kirsher /* Setup tx descriptor pointer */ 432b955f6caSJeff Kirsher leptr = libdesc_offset(btx_ring, 0); 433b955f6caSJeff Kirsher sbus_writew((LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16), 434b955f6caSJeff Kirsher &ib->tx_len); 435b955f6caSJeff Kirsher sbus_writew(leptr, &ib->tx_ptr); 436b955f6caSJeff Kirsher } 437b955f6caSJeff Kirsher 438b955f6caSJeff Kirsher static void init_restart_ledma(struct lance_private *lp) 439b955f6caSJeff Kirsher { 440b955f6caSJeff Kirsher u32 csr = sbus_readl(lp->dregs + DMA_CSR); 441b955f6caSJeff Kirsher 442b955f6caSJeff Kirsher if (!(csr & DMA_HNDL_ERROR)) { 443b955f6caSJeff Kirsher /* E-Cache draining */ 444b955f6caSJeff Kirsher while (sbus_readl(lp->dregs + DMA_CSR) & DMA_FIFO_ISDRAIN) 445b955f6caSJeff Kirsher barrier(); 446b955f6caSJeff Kirsher } 447b955f6caSJeff Kirsher 448b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 449b955f6caSJeff Kirsher csr &= ~DMA_E_BURSTS; 450b955f6caSJeff Kirsher if (lp->burst_sizes & DMA_BURST32) 451b955f6caSJeff Kirsher csr |= DMA_E_BURST32; 452b955f6caSJeff Kirsher else 453b955f6caSJeff Kirsher csr |= DMA_E_BURST16; 454b955f6caSJeff Kirsher 455b955f6caSJeff Kirsher csr |= (DMA_DSBL_RD_DRN | DMA_DSBL_WR_INV | DMA_FIFO_INV); 456b955f6caSJeff Kirsher 457b955f6caSJeff Kirsher if (lp->tpe) 458b955f6caSJeff Kirsher csr |= DMA_EN_ENETAUI; 459b955f6caSJeff Kirsher else 460b955f6caSJeff Kirsher csr &= ~DMA_EN_ENETAUI; 461b955f6caSJeff Kirsher udelay(20); 462b955f6caSJeff Kirsher sbus_writel(csr, lp->dregs + DMA_CSR); 463b955f6caSJeff Kirsher udelay(200); 464b955f6caSJeff Kirsher } 465b955f6caSJeff Kirsher 466b955f6caSJeff Kirsher static int init_restart_lance(struct lance_private *lp) 467b955f6caSJeff Kirsher { 468b955f6caSJeff Kirsher u16 regval = 0; 469b955f6caSJeff Kirsher int i; 470b955f6caSJeff Kirsher 471b955f6caSJeff Kirsher if (lp->dregs) 472b955f6caSJeff Kirsher init_restart_ledma(lp); 473b955f6caSJeff Kirsher 474b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 475b955f6caSJeff Kirsher sbus_writew(LE_C0_INIT, lp->lregs + RDP); 476b955f6caSJeff Kirsher 477b955f6caSJeff Kirsher /* Wait for the lance to complete initialization */ 478b955f6caSJeff Kirsher for (i = 0; i < 100; i++) { 479b955f6caSJeff Kirsher regval = sbus_readw(lp->lregs + RDP); 480b955f6caSJeff Kirsher 481b955f6caSJeff Kirsher if (regval & (LE_C0_ERR | LE_C0_IDON)) 482b955f6caSJeff Kirsher break; 483b955f6caSJeff Kirsher barrier(); 484b955f6caSJeff Kirsher } 485b955f6caSJeff Kirsher if (i == 100 || (regval & LE_C0_ERR)) { 486b955f6caSJeff Kirsher printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n", 487b955f6caSJeff Kirsher i, regval); 488b955f6caSJeff Kirsher if (lp->dregs) 489b955f6caSJeff Kirsher printk("dcsr=%8.8x\n", sbus_readl(lp->dregs + DMA_CSR)); 490b955f6caSJeff Kirsher return -1; 491b955f6caSJeff Kirsher } 492b955f6caSJeff Kirsher 493b955f6caSJeff Kirsher /* Clear IDON by writing a "1", enable interrupts and start lance */ 494b955f6caSJeff Kirsher sbus_writew(LE_C0_IDON, lp->lregs + RDP); 495b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_STRT, lp->lregs + RDP); 496b955f6caSJeff Kirsher 497b955f6caSJeff Kirsher if (lp->dregs) { 498b955f6caSJeff Kirsher u32 csr = sbus_readl(lp->dregs + DMA_CSR); 499b955f6caSJeff Kirsher 500b955f6caSJeff Kirsher csr |= DMA_INT_ENAB; 501b955f6caSJeff Kirsher sbus_writel(csr, lp->dregs + DMA_CSR); 502b955f6caSJeff Kirsher } 503b955f6caSJeff Kirsher 504b955f6caSJeff Kirsher return 0; 505b955f6caSJeff Kirsher } 506b955f6caSJeff Kirsher 507b955f6caSJeff Kirsher static void lance_rx_dvma(struct net_device *dev) 508b955f6caSJeff Kirsher { 509b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 510b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 511b955f6caSJeff Kirsher struct lance_rx_desc *rd; 512b955f6caSJeff Kirsher u8 bits; 513b955f6caSJeff Kirsher int len, entry = lp->rx_new; 514b955f6caSJeff Kirsher struct sk_buff *skb; 515b955f6caSJeff Kirsher 516b955f6caSJeff Kirsher for (rd = &ib->brx_ring [entry]; 517b955f6caSJeff Kirsher !((bits = rd->rmd1_bits) & LE_R1_OWN); 518b955f6caSJeff Kirsher rd = &ib->brx_ring [entry]) { 519b955f6caSJeff Kirsher 520b955f6caSJeff Kirsher /* We got an incomplete frame? */ 521b955f6caSJeff Kirsher if ((bits & LE_R1_POK) != LE_R1_POK) { 522b955f6caSJeff Kirsher dev->stats.rx_over_errors++; 523b955f6caSJeff Kirsher dev->stats.rx_errors++; 524b955f6caSJeff Kirsher } else if (bits & LE_R1_ERR) { 525b955f6caSJeff Kirsher /* Count only the end frame as a rx error, 526b955f6caSJeff Kirsher * not the beginning 527b955f6caSJeff Kirsher */ 528b955f6caSJeff Kirsher if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; 529b955f6caSJeff Kirsher if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; 530b955f6caSJeff Kirsher if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; 531b955f6caSJeff Kirsher if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; 532b955f6caSJeff Kirsher if (bits & LE_R1_EOP) dev->stats.rx_errors++; 533b955f6caSJeff Kirsher } else { 534b955f6caSJeff Kirsher len = (rd->mblength & 0xfff) - 4; 5351d266430SPradeep A Dalvi skb = netdev_alloc_skb(dev, len + 2); 536b955f6caSJeff Kirsher 537b955f6caSJeff Kirsher if (skb == NULL) { 538b955f6caSJeff Kirsher dev->stats.rx_dropped++; 539b955f6caSJeff Kirsher rd->mblength = 0; 540b955f6caSJeff Kirsher rd->rmd1_bits = LE_R1_OWN; 541b955f6caSJeff Kirsher lp->rx_new = RX_NEXT(entry); 542b955f6caSJeff Kirsher return; 543b955f6caSJeff Kirsher } 544b955f6caSJeff Kirsher 545b955f6caSJeff Kirsher dev->stats.rx_bytes += len; 546b955f6caSJeff Kirsher 547b955f6caSJeff Kirsher skb_reserve(skb, 2); /* 16 byte align */ 548b955f6caSJeff Kirsher skb_put(skb, len); /* make room */ 549b955f6caSJeff Kirsher skb_copy_to_linear_data(skb, 550b955f6caSJeff Kirsher (unsigned char *)&(ib->rx_buf [entry][0]), 551b955f6caSJeff Kirsher len); 552b955f6caSJeff Kirsher skb->protocol = eth_type_trans(skb, dev); 553b955f6caSJeff Kirsher netif_rx(skb); 554b955f6caSJeff Kirsher dev->stats.rx_packets++; 555b955f6caSJeff Kirsher } 556b955f6caSJeff Kirsher 557b955f6caSJeff Kirsher /* Return the packet to the pool */ 558b955f6caSJeff Kirsher rd->mblength = 0; 559b955f6caSJeff Kirsher rd->rmd1_bits = LE_R1_OWN; 560b955f6caSJeff Kirsher entry = RX_NEXT(entry); 561b955f6caSJeff Kirsher } 562b955f6caSJeff Kirsher 563b955f6caSJeff Kirsher lp->rx_new = entry; 564b955f6caSJeff Kirsher } 565b955f6caSJeff Kirsher 566b955f6caSJeff Kirsher static void lance_tx_dvma(struct net_device *dev) 567b955f6caSJeff Kirsher { 568b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 569b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 570b955f6caSJeff Kirsher int i, j; 571b955f6caSJeff Kirsher 572b955f6caSJeff Kirsher spin_lock(&lp->lock); 573b955f6caSJeff Kirsher 574b955f6caSJeff Kirsher j = lp->tx_old; 575b955f6caSJeff Kirsher for (i = j; i != lp->tx_new; i = j) { 576b955f6caSJeff Kirsher struct lance_tx_desc *td = &ib->btx_ring [i]; 577b955f6caSJeff Kirsher u8 bits = td->tmd1_bits; 578b955f6caSJeff Kirsher 579b955f6caSJeff Kirsher /* If we hit a packet not owned by us, stop */ 580b955f6caSJeff Kirsher if (bits & LE_T1_OWN) 581b955f6caSJeff Kirsher break; 582b955f6caSJeff Kirsher 583b955f6caSJeff Kirsher if (bits & LE_T1_ERR) { 584b955f6caSJeff Kirsher u16 status = td->misc; 585b955f6caSJeff Kirsher 586b955f6caSJeff Kirsher dev->stats.tx_errors++; 587b955f6caSJeff Kirsher if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; 588b955f6caSJeff Kirsher if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; 589b955f6caSJeff Kirsher 590b955f6caSJeff Kirsher if (status & LE_T3_CLOS) { 591b955f6caSJeff Kirsher dev->stats.tx_carrier_errors++; 592b955f6caSJeff Kirsher if (lp->auto_select) { 593b955f6caSJeff Kirsher lp->tpe = 1 - lp->tpe; 594b955f6caSJeff Kirsher printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", 595b955f6caSJeff Kirsher dev->name, lp->tpe?"TPE":"AUI"); 596b955f6caSJeff Kirsher STOP_LANCE(lp); 597b955f6caSJeff Kirsher lp->init_ring(dev); 598b955f6caSJeff Kirsher load_csrs(lp); 599b955f6caSJeff Kirsher init_restart_lance(lp); 600b955f6caSJeff Kirsher goto out; 601b955f6caSJeff Kirsher } 602b955f6caSJeff Kirsher } 603b955f6caSJeff Kirsher 604b955f6caSJeff Kirsher /* Buffer errors and underflows turn off the 605b955f6caSJeff Kirsher * transmitter, restart the adapter. 606b955f6caSJeff Kirsher */ 607b955f6caSJeff Kirsher if (status & (LE_T3_BUF|LE_T3_UFL)) { 608b955f6caSJeff Kirsher dev->stats.tx_fifo_errors++; 609b955f6caSJeff Kirsher 610b955f6caSJeff Kirsher printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 611b955f6caSJeff Kirsher dev->name); 612b955f6caSJeff Kirsher STOP_LANCE(lp); 613b955f6caSJeff Kirsher lp->init_ring(dev); 614b955f6caSJeff Kirsher load_csrs(lp); 615b955f6caSJeff Kirsher init_restart_lance(lp); 616b955f6caSJeff Kirsher goto out; 617b955f6caSJeff Kirsher } 618b955f6caSJeff Kirsher } else if ((bits & LE_T1_POK) == LE_T1_POK) { 619b955f6caSJeff Kirsher /* 620b955f6caSJeff Kirsher * So we don't count the packet more than once. 621b955f6caSJeff Kirsher */ 622b955f6caSJeff Kirsher td->tmd1_bits = bits & ~(LE_T1_POK); 623b955f6caSJeff Kirsher 624b955f6caSJeff Kirsher /* One collision before packet was sent. */ 625b955f6caSJeff Kirsher if (bits & LE_T1_EONE) 626b955f6caSJeff Kirsher dev->stats.collisions++; 627b955f6caSJeff Kirsher 628b955f6caSJeff Kirsher /* More than one collision, be optimistic. */ 629b955f6caSJeff Kirsher if (bits & LE_T1_EMORE) 630b955f6caSJeff Kirsher dev->stats.collisions += 2; 631b955f6caSJeff Kirsher 632b955f6caSJeff Kirsher dev->stats.tx_packets++; 633b955f6caSJeff Kirsher } 634b955f6caSJeff Kirsher 635b955f6caSJeff Kirsher j = TX_NEXT(j); 636b955f6caSJeff Kirsher } 637b955f6caSJeff Kirsher lp->tx_old = j; 638b955f6caSJeff Kirsher out: 639b955f6caSJeff Kirsher if (netif_queue_stopped(dev) && 640b955f6caSJeff Kirsher TX_BUFFS_AVAIL > 0) 641b955f6caSJeff Kirsher netif_wake_queue(dev); 642b955f6caSJeff Kirsher 643b955f6caSJeff Kirsher spin_unlock(&lp->lock); 644b955f6caSJeff Kirsher } 645b955f6caSJeff Kirsher 646b955f6caSJeff Kirsher static void lance_piocopy_to_skb(struct sk_buff *skb, void __iomem *piobuf, int len) 647b955f6caSJeff Kirsher { 648b955f6caSJeff Kirsher u16 *p16 = (u16 *) skb->data; 649b955f6caSJeff Kirsher u32 *p32; 650b955f6caSJeff Kirsher u8 *p8; 651b955f6caSJeff Kirsher void __iomem *pbuf = piobuf; 652b955f6caSJeff Kirsher 653b955f6caSJeff Kirsher /* We know here that both src and dest are on a 16bit boundary. */ 654b955f6caSJeff Kirsher *p16++ = sbus_readw(pbuf); 655b955f6caSJeff Kirsher p32 = (u32 *) p16; 656b955f6caSJeff Kirsher pbuf += 2; 657b955f6caSJeff Kirsher len -= 2; 658b955f6caSJeff Kirsher 659b955f6caSJeff Kirsher while (len >= 4) { 660b955f6caSJeff Kirsher *p32++ = sbus_readl(pbuf); 661b955f6caSJeff Kirsher pbuf += 4; 662b955f6caSJeff Kirsher len -= 4; 663b955f6caSJeff Kirsher } 664b955f6caSJeff Kirsher p8 = (u8 *) p32; 665b955f6caSJeff Kirsher if (len >= 2) { 666b955f6caSJeff Kirsher p16 = (u16 *) p32; 667b955f6caSJeff Kirsher *p16++ = sbus_readw(pbuf); 668b955f6caSJeff Kirsher pbuf += 2; 669b955f6caSJeff Kirsher len -= 2; 670b955f6caSJeff Kirsher p8 = (u8 *) p16; 671b955f6caSJeff Kirsher } 672b955f6caSJeff Kirsher if (len >= 1) 673b955f6caSJeff Kirsher *p8 = sbus_readb(pbuf); 674b955f6caSJeff Kirsher } 675b955f6caSJeff Kirsher 676b955f6caSJeff Kirsher static void lance_rx_pio(struct net_device *dev) 677b955f6caSJeff Kirsher { 678b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 679b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 680b955f6caSJeff Kirsher struct lance_rx_desc __iomem *rd; 681b955f6caSJeff Kirsher unsigned char bits; 682b955f6caSJeff Kirsher int len, entry; 683b955f6caSJeff Kirsher struct sk_buff *skb; 684b955f6caSJeff Kirsher 685b955f6caSJeff Kirsher entry = lp->rx_new; 686b955f6caSJeff Kirsher for (rd = &ib->brx_ring [entry]; 687b955f6caSJeff Kirsher !((bits = sbus_readb(&rd->rmd1_bits)) & LE_R1_OWN); 688b955f6caSJeff Kirsher rd = &ib->brx_ring [entry]) { 689b955f6caSJeff Kirsher 690b955f6caSJeff Kirsher /* We got an incomplete frame? */ 691b955f6caSJeff Kirsher if ((bits & LE_R1_POK) != LE_R1_POK) { 692b955f6caSJeff Kirsher dev->stats.rx_over_errors++; 693b955f6caSJeff Kirsher dev->stats.rx_errors++; 694b955f6caSJeff Kirsher } else if (bits & LE_R1_ERR) { 695b955f6caSJeff Kirsher /* Count only the end frame as a rx error, 696b955f6caSJeff Kirsher * not the beginning 697b955f6caSJeff Kirsher */ 698b955f6caSJeff Kirsher if (bits & LE_R1_BUF) dev->stats.rx_fifo_errors++; 699b955f6caSJeff Kirsher if (bits & LE_R1_CRC) dev->stats.rx_crc_errors++; 700b955f6caSJeff Kirsher if (bits & LE_R1_OFL) dev->stats.rx_over_errors++; 701b955f6caSJeff Kirsher if (bits & LE_R1_FRA) dev->stats.rx_frame_errors++; 702b955f6caSJeff Kirsher if (bits & LE_R1_EOP) dev->stats.rx_errors++; 703b955f6caSJeff Kirsher } else { 704b955f6caSJeff Kirsher len = (sbus_readw(&rd->mblength) & 0xfff) - 4; 7051d266430SPradeep A Dalvi skb = netdev_alloc_skb(dev, len + 2); 706b955f6caSJeff Kirsher 707b955f6caSJeff Kirsher if (skb == NULL) { 708b955f6caSJeff Kirsher dev->stats.rx_dropped++; 709b955f6caSJeff Kirsher sbus_writew(0, &rd->mblength); 710b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); 711b955f6caSJeff Kirsher lp->rx_new = RX_NEXT(entry); 712b955f6caSJeff Kirsher return; 713b955f6caSJeff Kirsher } 714b955f6caSJeff Kirsher 715b955f6caSJeff Kirsher dev->stats.rx_bytes += len; 716b955f6caSJeff Kirsher 717b955f6caSJeff Kirsher skb_reserve (skb, 2); /* 16 byte align */ 718b955f6caSJeff Kirsher skb_put(skb, len); /* make room */ 719b955f6caSJeff Kirsher lance_piocopy_to_skb(skb, &(ib->rx_buf[entry][0]), len); 720b955f6caSJeff Kirsher skb->protocol = eth_type_trans(skb, dev); 721b955f6caSJeff Kirsher netif_rx(skb); 722b955f6caSJeff Kirsher dev->stats.rx_packets++; 723b955f6caSJeff Kirsher } 724b955f6caSJeff Kirsher 725b955f6caSJeff Kirsher /* Return the packet to the pool */ 726b955f6caSJeff Kirsher sbus_writew(0, &rd->mblength); 727b955f6caSJeff Kirsher sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); 728b955f6caSJeff Kirsher entry = RX_NEXT(entry); 729b955f6caSJeff Kirsher } 730b955f6caSJeff Kirsher 731b955f6caSJeff Kirsher lp->rx_new = entry; 732b955f6caSJeff Kirsher } 733b955f6caSJeff Kirsher 734b955f6caSJeff Kirsher static void lance_tx_pio(struct net_device *dev) 735b955f6caSJeff Kirsher { 736b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 737b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 738b955f6caSJeff Kirsher int i, j; 739b955f6caSJeff Kirsher 740b955f6caSJeff Kirsher spin_lock(&lp->lock); 741b955f6caSJeff Kirsher 742b955f6caSJeff Kirsher j = lp->tx_old; 743b955f6caSJeff Kirsher for (i = j; i != lp->tx_new; i = j) { 744b955f6caSJeff Kirsher struct lance_tx_desc __iomem *td = &ib->btx_ring [i]; 745b955f6caSJeff Kirsher u8 bits = sbus_readb(&td->tmd1_bits); 746b955f6caSJeff Kirsher 747b955f6caSJeff Kirsher /* If we hit a packet not owned by us, stop */ 748b955f6caSJeff Kirsher if (bits & LE_T1_OWN) 749b955f6caSJeff Kirsher break; 750b955f6caSJeff Kirsher 751b955f6caSJeff Kirsher if (bits & LE_T1_ERR) { 752b955f6caSJeff Kirsher u16 status = sbus_readw(&td->misc); 753b955f6caSJeff Kirsher 754b955f6caSJeff Kirsher dev->stats.tx_errors++; 755b955f6caSJeff Kirsher if (status & LE_T3_RTY) dev->stats.tx_aborted_errors++; 756b955f6caSJeff Kirsher if (status & LE_T3_LCOL) dev->stats.tx_window_errors++; 757b955f6caSJeff Kirsher 758b955f6caSJeff Kirsher if (status & LE_T3_CLOS) { 759b955f6caSJeff Kirsher dev->stats.tx_carrier_errors++; 760b955f6caSJeff Kirsher if (lp->auto_select) { 761b955f6caSJeff Kirsher lp->tpe = 1 - lp->tpe; 762b955f6caSJeff Kirsher printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", 763b955f6caSJeff Kirsher dev->name, lp->tpe?"TPE":"AUI"); 764b955f6caSJeff Kirsher STOP_LANCE(lp); 765b955f6caSJeff Kirsher lp->init_ring(dev); 766b955f6caSJeff Kirsher load_csrs(lp); 767b955f6caSJeff Kirsher init_restart_lance(lp); 768b955f6caSJeff Kirsher goto out; 769b955f6caSJeff Kirsher } 770b955f6caSJeff Kirsher } 771b955f6caSJeff Kirsher 772b955f6caSJeff Kirsher /* Buffer errors and underflows turn off the 773b955f6caSJeff Kirsher * transmitter, restart the adapter. 774b955f6caSJeff Kirsher */ 775b955f6caSJeff Kirsher if (status & (LE_T3_BUF|LE_T3_UFL)) { 776b955f6caSJeff Kirsher dev->stats.tx_fifo_errors++; 777b955f6caSJeff Kirsher 778b955f6caSJeff Kirsher printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", 779b955f6caSJeff Kirsher dev->name); 780b955f6caSJeff Kirsher STOP_LANCE(lp); 781b955f6caSJeff Kirsher lp->init_ring(dev); 782b955f6caSJeff Kirsher load_csrs(lp); 783b955f6caSJeff Kirsher init_restart_lance(lp); 784b955f6caSJeff Kirsher goto out; 785b955f6caSJeff Kirsher } 786b955f6caSJeff Kirsher } else if ((bits & LE_T1_POK) == LE_T1_POK) { 787b955f6caSJeff Kirsher /* 788b955f6caSJeff Kirsher * So we don't count the packet more than once. 789b955f6caSJeff Kirsher */ 790b955f6caSJeff Kirsher sbus_writeb(bits & ~(LE_T1_POK), &td->tmd1_bits); 791b955f6caSJeff Kirsher 792b955f6caSJeff Kirsher /* One collision before packet was sent. */ 793b955f6caSJeff Kirsher if (bits & LE_T1_EONE) 794b955f6caSJeff Kirsher dev->stats.collisions++; 795b955f6caSJeff Kirsher 796b955f6caSJeff Kirsher /* More than one collision, be optimistic. */ 797b955f6caSJeff Kirsher if (bits & LE_T1_EMORE) 798b955f6caSJeff Kirsher dev->stats.collisions += 2; 799b955f6caSJeff Kirsher 800b955f6caSJeff Kirsher dev->stats.tx_packets++; 801b955f6caSJeff Kirsher } 802b955f6caSJeff Kirsher 803b955f6caSJeff Kirsher j = TX_NEXT(j); 804b955f6caSJeff Kirsher } 805b955f6caSJeff Kirsher lp->tx_old = j; 806b955f6caSJeff Kirsher 807b955f6caSJeff Kirsher if (netif_queue_stopped(dev) && 808b955f6caSJeff Kirsher TX_BUFFS_AVAIL > 0) 809b955f6caSJeff Kirsher netif_wake_queue(dev); 810b955f6caSJeff Kirsher out: 811b955f6caSJeff Kirsher spin_unlock(&lp->lock); 812b955f6caSJeff Kirsher } 813b955f6caSJeff Kirsher 814b955f6caSJeff Kirsher static irqreturn_t lance_interrupt(int irq, void *dev_id) 815b955f6caSJeff Kirsher { 816b955f6caSJeff Kirsher struct net_device *dev = dev_id; 817b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 818b955f6caSJeff Kirsher int csr0; 819b955f6caSJeff Kirsher 820b955f6caSJeff Kirsher sbus_writew(LE_CSR0, lp->lregs + RAP); 821b955f6caSJeff Kirsher csr0 = sbus_readw(lp->lregs + RDP); 822b955f6caSJeff Kirsher 823b955f6caSJeff Kirsher /* Acknowledge all the interrupt sources ASAP */ 824b955f6caSJeff Kirsher sbus_writew(csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT), 825b955f6caSJeff Kirsher lp->lregs + RDP); 826b955f6caSJeff Kirsher 827b955f6caSJeff Kirsher if ((csr0 & LE_C0_ERR) != 0) { 828b955f6caSJeff Kirsher /* Clear the error condition */ 829b955f6caSJeff Kirsher sbus_writew((LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | 830b955f6caSJeff Kirsher LE_C0_CERR | LE_C0_MERR), 831b955f6caSJeff Kirsher lp->lregs + RDP); 832b955f6caSJeff Kirsher } 833b955f6caSJeff Kirsher 834b955f6caSJeff Kirsher if (csr0 & LE_C0_RINT) 835b955f6caSJeff Kirsher lp->rx(dev); 836b955f6caSJeff Kirsher 837b955f6caSJeff Kirsher if (csr0 & LE_C0_TINT) 838b955f6caSJeff Kirsher lp->tx(dev); 839b955f6caSJeff Kirsher 840b955f6caSJeff Kirsher if (csr0 & LE_C0_BABL) 841b955f6caSJeff Kirsher dev->stats.tx_errors++; 842b955f6caSJeff Kirsher 843b955f6caSJeff Kirsher if (csr0 & LE_C0_MISS) 844b955f6caSJeff Kirsher dev->stats.rx_errors++; 845b955f6caSJeff Kirsher 846b955f6caSJeff Kirsher if (csr0 & LE_C0_MERR) { 847b955f6caSJeff Kirsher if (lp->dregs) { 848b955f6caSJeff Kirsher u32 addr = sbus_readl(lp->dregs + DMA_ADDR); 849b955f6caSJeff Kirsher 850b955f6caSJeff Kirsher printk(KERN_ERR "%s: Memory error, status %04x, addr %06x\n", 851b955f6caSJeff Kirsher dev->name, csr0, addr & 0xffffff); 852b955f6caSJeff Kirsher } else { 853b955f6caSJeff Kirsher printk(KERN_ERR "%s: Memory error, status %04x\n", 854b955f6caSJeff Kirsher dev->name, csr0); 855b955f6caSJeff Kirsher } 856b955f6caSJeff Kirsher 857b955f6caSJeff Kirsher sbus_writew(LE_C0_STOP, lp->lregs + RDP); 858b955f6caSJeff Kirsher 859b955f6caSJeff Kirsher if (lp->dregs) { 860b955f6caSJeff Kirsher u32 dma_csr = sbus_readl(lp->dregs + DMA_CSR); 861b955f6caSJeff Kirsher 862b955f6caSJeff Kirsher dma_csr |= DMA_FIFO_INV; 863b955f6caSJeff Kirsher sbus_writel(dma_csr, lp->dregs + DMA_CSR); 864b955f6caSJeff Kirsher } 865b955f6caSJeff Kirsher 866b955f6caSJeff Kirsher lp->init_ring(dev); 867b955f6caSJeff Kirsher load_csrs(lp); 868b955f6caSJeff Kirsher init_restart_lance(lp); 869b955f6caSJeff Kirsher netif_wake_queue(dev); 870b955f6caSJeff Kirsher } 871b955f6caSJeff Kirsher 872b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA, lp->lregs + RDP); 873b955f6caSJeff Kirsher 874b955f6caSJeff Kirsher return IRQ_HANDLED; 875b955f6caSJeff Kirsher } 876b955f6caSJeff Kirsher 877b955f6caSJeff Kirsher /* Build a fake network packet and send it to ourselves. */ 878b955f6caSJeff Kirsher static void build_fake_packet(struct lance_private *lp) 879b955f6caSJeff Kirsher { 880b955f6caSJeff Kirsher struct net_device *dev = lp->dev; 881b955f6caSJeff Kirsher int i, entry; 882b955f6caSJeff Kirsher 883b955f6caSJeff Kirsher entry = lp->tx_new & TX_RING_MOD_MASK; 884b955f6caSJeff Kirsher if (lp->pio_buffer) { 885b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 886b955f6caSJeff Kirsher u16 __iomem *packet = (u16 __iomem *) &(ib->tx_buf[entry][0]); 887b955f6caSJeff Kirsher struct ethhdr __iomem *eth = (struct ethhdr __iomem *) packet; 888b955f6caSJeff Kirsher for (i = 0; i < (ETH_ZLEN / sizeof(u16)); i++) 889b955f6caSJeff Kirsher sbus_writew(0, &packet[i]); 890b955f6caSJeff Kirsher for (i = 0; i < 6; i++) { 891b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[i], ð->h_dest[i]); 892b955f6caSJeff Kirsher sbus_writeb(dev->dev_addr[i], ð->h_source[i]); 893b955f6caSJeff Kirsher } 894b955f6caSJeff Kirsher sbus_writew((-ETH_ZLEN) | 0xf000, &ib->btx_ring[entry].length); 895b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring[entry].misc); 896b955f6caSJeff Kirsher sbus_writeb(LE_T1_POK|LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); 897b955f6caSJeff Kirsher } else { 898b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 899b955f6caSJeff Kirsher u16 *packet = (u16 *) &(ib->tx_buf[entry][0]); 900b955f6caSJeff Kirsher struct ethhdr *eth = (struct ethhdr *) packet; 901b955f6caSJeff Kirsher memset(packet, 0, ETH_ZLEN); 902b955f6caSJeff Kirsher for (i = 0; i < 6; i++) { 903b955f6caSJeff Kirsher eth->h_dest[i] = dev->dev_addr[i]; 904b955f6caSJeff Kirsher eth->h_source[i] = dev->dev_addr[i]; 905b955f6caSJeff Kirsher } 906b955f6caSJeff Kirsher ib->btx_ring[entry].length = (-ETH_ZLEN) | 0xf000; 907b955f6caSJeff Kirsher ib->btx_ring[entry].misc = 0; 908b955f6caSJeff Kirsher ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); 909b955f6caSJeff Kirsher } 910b955f6caSJeff Kirsher lp->tx_new = TX_NEXT(entry); 911b955f6caSJeff Kirsher } 912b955f6caSJeff Kirsher 913b955f6caSJeff Kirsher static int lance_open(struct net_device *dev) 914b955f6caSJeff Kirsher { 915b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 916b955f6caSJeff Kirsher int status = 0; 917b955f6caSJeff Kirsher 918b955f6caSJeff Kirsher STOP_LANCE(lp); 919b955f6caSJeff Kirsher 920b955f6caSJeff Kirsher if (request_irq(dev->irq, lance_interrupt, IRQF_SHARED, 921b955f6caSJeff Kirsher lancestr, (void *) dev)) { 922b955f6caSJeff Kirsher printk(KERN_ERR "Lance: Can't get irq %d\n", dev->irq); 923b955f6caSJeff Kirsher return -EAGAIN; 924b955f6caSJeff Kirsher } 925b955f6caSJeff Kirsher 926b955f6caSJeff Kirsher /* On the 4m, setup the ledma to provide the upper bits for buffers */ 927b955f6caSJeff Kirsher if (lp->dregs) { 928b955f6caSJeff Kirsher u32 regval = lp->init_block_dvma & 0xff000000; 929b955f6caSJeff Kirsher 930b955f6caSJeff Kirsher sbus_writel(regval, lp->dregs + DMA_TEST); 931b955f6caSJeff Kirsher } 932b955f6caSJeff Kirsher 933b955f6caSJeff Kirsher /* Set mode and clear multicast filter only at device open, 934b955f6caSJeff Kirsher * so that lance_init_ring() called at any error will not 935b955f6caSJeff Kirsher * forget multicast filters. 936b955f6caSJeff Kirsher * 937b955f6caSJeff Kirsher * BTW it is common bug in all lance drivers! --ANK 938b955f6caSJeff Kirsher */ 939b955f6caSJeff Kirsher if (lp->pio_buffer) { 940b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 941b955f6caSJeff Kirsher sbus_writew(0, &ib->mode); 942b955f6caSJeff Kirsher sbus_writel(0, &ib->filter[0]); 943b955f6caSJeff Kirsher sbus_writel(0, &ib->filter[1]); 944b955f6caSJeff Kirsher } else { 945b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 946b955f6caSJeff Kirsher ib->mode = 0; 947b955f6caSJeff Kirsher ib->filter [0] = 0; 948b955f6caSJeff Kirsher ib->filter [1] = 0; 949b955f6caSJeff Kirsher } 950b955f6caSJeff Kirsher 951b955f6caSJeff Kirsher lp->init_ring(dev); 952b955f6caSJeff Kirsher load_csrs(lp); 953b955f6caSJeff Kirsher 954b955f6caSJeff Kirsher netif_start_queue(dev); 955b955f6caSJeff Kirsher 956b955f6caSJeff Kirsher status = init_restart_lance(lp); 957b955f6caSJeff Kirsher if (!status && lp->auto_select) { 958b955f6caSJeff Kirsher build_fake_packet(lp); 959b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); 960b955f6caSJeff Kirsher } 961b955f6caSJeff Kirsher 962b955f6caSJeff Kirsher return status; 963b955f6caSJeff Kirsher } 964b955f6caSJeff Kirsher 965b955f6caSJeff Kirsher static int lance_close(struct net_device *dev) 966b955f6caSJeff Kirsher { 967b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 968b955f6caSJeff Kirsher 969b955f6caSJeff Kirsher netif_stop_queue(dev); 970b955f6caSJeff Kirsher del_timer_sync(&lp->multicast_timer); 971b955f6caSJeff Kirsher 972b955f6caSJeff Kirsher STOP_LANCE(lp); 973b955f6caSJeff Kirsher 974b955f6caSJeff Kirsher free_irq(dev->irq, (void *) dev); 975b955f6caSJeff Kirsher return 0; 976b955f6caSJeff Kirsher } 977b955f6caSJeff Kirsher 978b955f6caSJeff Kirsher static int lance_reset(struct net_device *dev) 979b955f6caSJeff Kirsher { 980b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 981b955f6caSJeff Kirsher int status; 982b955f6caSJeff Kirsher 983b955f6caSJeff Kirsher STOP_LANCE(lp); 984b955f6caSJeff Kirsher 985b955f6caSJeff Kirsher /* On the 4m, reset the dma too */ 986b955f6caSJeff Kirsher if (lp->dregs) { 987b955f6caSJeff Kirsher u32 csr, addr; 988b955f6caSJeff Kirsher 989b955f6caSJeff Kirsher printk(KERN_ERR "resetting ledma\n"); 990b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 991b955f6caSJeff Kirsher sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); 992b955f6caSJeff Kirsher udelay(200); 993b955f6caSJeff Kirsher sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); 994b955f6caSJeff Kirsher 995b955f6caSJeff Kirsher addr = lp->init_block_dvma & 0xff000000; 996b955f6caSJeff Kirsher sbus_writel(addr, lp->dregs + DMA_TEST); 997b955f6caSJeff Kirsher } 998b955f6caSJeff Kirsher lp->init_ring(dev); 999b955f6caSJeff Kirsher load_csrs(lp); 1000860e9538SFlorian Westphal netif_trans_update(dev); /* prevent tx timeout */ 1001b955f6caSJeff Kirsher status = init_restart_lance(lp); 1002b955f6caSJeff Kirsher return status; 1003b955f6caSJeff Kirsher } 1004b955f6caSJeff Kirsher 1005b955f6caSJeff Kirsher static void lance_piocopy_from_skb(void __iomem *dest, unsigned char *src, int len) 1006b955f6caSJeff Kirsher { 1007b955f6caSJeff Kirsher void __iomem *piobuf = dest; 1008b955f6caSJeff Kirsher u32 *p32; 1009b955f6caSJeff Kirsher u16 *p16; 1010b955f6caSJeff Kirsher u8 *p8; 1011b955f6caSJeff Kirsher 1012b955f6caSJeff Kirsher switch ((unsigned long)src & 0x3) { 1013b955f6caSJeff Kirsher case 0: 1014b955f6caSJeff Kirsher p32 = (u32 *) src; 1015b955f6caSJeff Kirsher while (len >= 4) { 1016b955f6caSJeff Kirsher sbus_writel(*p32, piobuf); 1017b955f6caSJeff Kirsher p32++; 1018b955f6caSJeff Kirsher piobuf += 4; 1019b955f6caSJeff Kirsher len -= 4; 1020b955f6caSJeff Kirsher } 1021b955f6caSJeff Kirsher src = (char *) p32; 1022b955f6caSJeff Kirsher break; 1023b955f6caSJeff Kirsher case 1: 1024b955f6caSJeff Kirsher case 3: 1025b955f6caSJeff Kirsher p8 = (u8 *) src; 1026b955f6caSJeff Kirsher while (len >= 4) { 1027b955f6caSJeff Kirsher u32 val; 1028b955f6caSJeff Kirsher 1029b955f6caSJeff Kirsher val = p8[0] << 24; 1030b955f6caSJeff Kirsher val |= p8[1] << 16; 1031b955f6caSJeff Kirsher val |= p8[2] << 8; 1032b955f6caSJeff Kirsher val |= p8[3]; 1033b955f6caSJeff Kirsher sbus_writel(val, piobuf); 1034b955f6caSJeff Kirsher p8 += 4; 1035b955f6caSJeff Kirsher piobuf += 4; 1036b955f6caSJeff Kirsher len -= 4; 1037b955f6caSJeff Kirsher } 1038b955f6caSJeff Kirsher src = (char *) p8; 1039b955f6caSJeff Kirsher break; 1040b955f6caSJeff Kirsher case 2: 1041b955f6caSJeff Kirsher p16 = (u16 *) src; 1042b955f6caSJeff Kirsher while (len >= 4) { 1043b955f6caSJeff Kirsher u32 val = p16[0]<<16 | p16[1]; 1044b955f6caSJeff Kirsher sbus_writel(val, piobuf); 1045b955f6caSJeff Kirsher p16 += 2; 1046b955f6caSJeff Kirsher piobuf += 4; 1047b955f6caSJeff Kirsher len -= 4; 1048b955f6caSJeff Kirsher } 1049b955f6caSJeff Kirsher src = (char *) p16; 1050b955f6caSJeff Kirsher break; 1051b955f6caSJeff Kirsher } 1052b955f6caSJeff Kirsher if (len >= 2) { 1053b955f6caSJeff Kirsher u16 val = src[0] << 8 | src[1]; 1054b955f6caSJeff Kirsher sbus_writew(val, piobuf); 1055b955f6caSJeff Kirsher src += 2; 1056b955f6caSJeff Kirsher piobuf += 2; 1057b955f6caSJeff Kirsher len -= 2; 1058b955f6caSJeff Kirsher } 1059b955f6caSJeff Kirsher if (len >= 1) 1060b955f6caSJeff Kirsher sbus_writeb(src[0], piobuf); 1061b955f6caSJeff Kirsher } 1062b955f6caSJeff Kirsher 1063b955f6caSJeff Kirsher static void lance_piozero(void __iomem *dest, int len) 1064b955f6caSJeff Kirsher { 1065b955f6caSJeff Kirsher void __iomem *piobuf = dest; 1066b955f6caSJeff Kirsher 1067b955f6caSJeff Kirsher if ((unsigned long)piobuf & 1) { 1068b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1069b955f6caSJeff Kirsher piobuf += 1; 1070b955f6caSJeff Kirsher len -= 1; 1071b955f6caSJeff Kirsher if (len == 0) 1072b955f6caSJeff Kirsher return; 1073b955f6caSJeff Kirsher } 1074b955f6caSJeff Kirsher if (len == 1) { 1075b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1076b955f6caSJeff Kirsher return; 1077b955f6caSJeff Kirsher } 1078b955f6caSJeff Kirsher if ((unsigned long)piobuf & 2) { 1079b955f6caSJeff Kirsher sbus_writew(0, piobuf); 1080b955f6caSJeff Kirsher piobuf += 2; 1081b955f6caSJeff Kirsher len -= 2; 1082b955f6caSJeff Kirsher if (len == 0) 1083b955f6caSJeff Kirsher return; 1084b955f6caSJeff Kirsher } 1085b955f6caSJeff Kirsher while (len >= 4) { 1086b955f6caSJeff Kirsher sbus_writel(0, piobuf); 1087b955f6caSJeff Kirsher piobuf += 4; 1088b955f6caSJeff Kirsher len -= 4; 1089b955f6caSJeff Kirsher } 1090b955f6caSJeff Kirsher if (len >= 2) { 1091b955f6caSJeff Kirsher sbus_writew(0, piobuf); 1092b955f6caSJeff Kirsher piobuf += 2; 1093b955f6caSJeff Kirsher len -= 2; 1094b955f6caSJeff Kirsher } 1095b955f6caSJeff Kirsher if (len >= 1) 1096b955f6caSJeff Kirsher sbus_writeb(0, piobuf); 1097b955f6caSJeff Kirsher } 1098b955f6caSJeff Kirsher 1099b955f6caSJeff Kirsher static void lance_tx_timeout(struct net_device *dev) 1100b955f6caSJeff Kirsher { 1101b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1102b955f6caSJeff Kirsher 1103b955f6caSJeff Kirsher printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", 1104b955f6caSJeff Kirsher dev->name, sbus_readw(lp->lregs + RDP)); 1105b955f6caSJeff Kirsher lance_reset(dev); 1106b955f6caSJeff Kirsher netif_wake_queue(dev); 1107b955f6caSJeff Kirsher } 1108b955f6caSJeff Kirsher 1109b955f6caSJeff Kirsher static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) 1110b955f6caSJeff Kirsher { 1111b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1112b955f6caSJeff Kirsher int entry, skblen, len; 1113b955f6caSJeff Kirsher 1114b955f6caSJeff Kirsher skblen = skb->len; 1115b955f6caSJeff Kirsher 1116b955f6caSJeff Kirsher len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; 1117b955f6caSJeff Kirsher 1118b955f6caSJeff Kirsher spin_lock_irq(&lp->lock); 1119b955f6caSJeff Kirsher 1120b955f6caSJeff Kirsher dev->stats.tx_bytes += len; 1121b955f6caSJeff Kirsher 1122b955f6caSJeff Kirsher entry = lp->tx_new & TX_RING_MOD_MASK; 1123b955f6caSJeff Kirsher if (lp->pio_buffer) { 1124b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1125b955f6caSJeff Kirsher sbus_writew((-len) | 0xf000, &ib->btx_ring[entry].length); 1126b955f6caSJeff Kirsher sbus_writew(0, &ib->btx_ring[entry].misc); 1127b955f6caSJeff Kirsher lance_piocopy_from_skb(&ib->tx_buf[entry][0], skb->data, skblen); 1128b955f6caSJeff Kirsher if (len != skblen) 1129b955f6caSJeff Kirsher lance_piozero(&ib->tx_buf[entry][skblen], len - skblen); 1130b955f6caSJeff Kirsher sbus_writeb(LE_T1_POK | LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); 1131b955f6caSJeff Kirsher } else { 1132b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1133b955f6caSJeff Kirsher ib->btx_ring [entry].length = (-len) | 0xf000; 1134b955f6caSJeff Kirsher ib->btx_ring [entry].misc = 0; 1135b955f6caSJeff Kirsher skb_copy_from_linear_data(skb, &ib->tx_buf [entry][0], skblen); 1136b955f6caSJeff Kirsher if (len != skblen) 1137b955f6caSJeff Kirsher memset((char *) &ib->tx_buf [entry][skblen], 0, len - skblen); 1138b955f6caSJeff Kirsher ib->btx_ring [entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); 1139b955f6caSJeff Kirsher } 1140b955f6caSJeff Kirsher 1141b955f6caSJeff Kirsher lp->tx_new = TX_NEXT(entry); 1142b955f6caSJeff Kirsher 1143b955f6caSJeff Kirsher if (TX_BUFFS_AVAIL <= 0) 1144b955f6caSJeff Kirsher netif_stop_queue(dev); 1145b955f6caSJeff Kirsher 1146b955f6caSJeff Kirsher /* Kick the lance: transmit now */ 1147b955f6caSJeff Kirsher sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); 1148b955f6caSJeff Kirsher 1149b955f6caSJeff Kirsher /* Read back CSR to invalidate the E-Cache. 1150b955f6caSJeff Kirsher * This is needed, because DMA_DSBL_WR_INV is set. 1151b955f6caSJeff Kirsher */ 1152b955f6caSJeff Kirsher if (lp->dregs) 1153b955f6caSJeff Kirsher sbus_readw(lp->lregs + RDP); 1154b955f6caSJeff Kirsher 1155b955f6caSJeff Kirsher spin_unlock_irq(&lp->lock); 1156b955f6caSJeff Kirsher 1157b955f6caSJeff Kirsher dev_kfree_skb(skb); 1158b955f6caSJeff Kirsher 1159b955f6caSJeff Kirsher return NETDEV_TX_OK; 1160b955f6caSJeff Kirsher } 1161b955f6caSJeff Kirsher 1162b955f6caSJeff Kirsher /* taken from the depca driver */ 1163b955f6caSJeff Kirsher static void lance_load_multicast(struct net_device *dev) 1164b955f6caSJeff Kirsher { 1165b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1166b955f6caSJeff Kirsher struct netdev_hw_addr *ha; 1167b955f6caSJeff Kirsher u32 crc; 1168b955f6caSJeff Kirsher u32 val; 1169b955f6caSJeff Kirsher 1170b955f6caSJeff Kirsher /* set all multicast bits */ 1171b955f6caSJeff Kirsher if (dev->flags & IFF_ALLMULTI) 1172b955f6caSJeff Kirsher val = ~0; 1173b955f6caSJeff Kirsher else 1174b955f6caSJeff Kirsher val = 0; 1175b955f6caSJeff Kirsher 1176b955f6caSJeff Kirsher if (lp->pio_buffer) { 1177b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1178b955f6caSJeff Kirsher sbus_writel(val, &ib->filter[0]); 1179b955f6caSJeff Kirsher sbus_writel(val, &ib->filter[1]); 1180b955f6caSJeff Kirsher } else { 1181b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1182b955f6caSJeff Kirsher ib->filter [0] = val; 1183b955f6caSJeff Kirsher ib->filter [1] = val; 1184b955f6caSJeff Kirsher } 1185b955f6caSJeff Kirsher 1186b955f6caSJeff Kirsher if (dev->flags & IFF_ALLMULTI) 1187b955f6caSJeff Kirsher return; 1188b955f6caSJeff Kirsher 1189b955f6caSJeff Kirsher /* Add addresses */ 1190b955f6caSJeff Kirsher netdev_for_each_mc_addr(ha, dev) { 1191b955f6caSJeff Kirsher crc = ether_crc_le(6, ha->addr); 1192b955f6caSJeff Kirsher crc = crc >> 26; 1193b955f6caSJeff Kirsher if (lp->pio_buffer) { 1194b955f6caSJeff Kirsher struct lance_init_block __iomem *ib = lp->init_block_iomem; 1195b955f6caSJeff Kirsher u16 __iomem *mcast_table = (u16 __iomem *) &ib->filter; 1196b955f6caSJeff Kirsher u16 tmp = sbus_readw(&mcast_table[crc>>4]); 1197b955f6caSJeff Kirsher tmp |= 1 << (crc & 0xf); 1198b955f6caSJeff Kirsher sbus_writew(tmp, &mcast_table[crc>>4]); 1199b955f6caSJeff Kirsher } else { 1200b955f6caSJeff Kirsher struct lance_init_block *ib = lp->init_block_mem; 1201b955f6caSJeff Kirsher u16 *mcast_table = (u16 *) &ib->filter; 1202b955f6caSJeff Kirsher mcast_table [crc >> 4] |= 1 << (crc & 0xf); 1203b955f6caSJeff Kirsher } 1204b955f6caSJeff Kirsher } 1205b955f6caSJeff Kirsher } 1206b955f6caSJeff Kirsher 1207b955f6caSJeff Kirsher static void lance_set_multicast(struct net_device *dev) 1208b955f6caSJeff Kirsher { 1209b955f6caSJeff Kirsher struct lance_private *lp = netdev_priv(dev); 1210b955f6caSJeff Kirsher struct lance_init_block *ib_mem = lp->init_block_mem; 1211b955f6caSJeff Kirsher struct lance_init_block __iomem *ib_iomem = lp->init_block_iomem; 1212b955f6caSJeff Kirsher u16 mode; 1213b955f6caSJeff Kirsher 1214b955f6caSJeff Kirsher if (!netif_running(dev)) 1215b955f6caSJeff Kirsher return; 1216b955f6caSJeff Kirsher 1217b955f6caSJeff Kirsher if (lp->tx_old != lp->tx_new) { 1218b955f6caSJeff Kirsher mod_timer(&lp->multicast_timer, jiffies + 4); 1219b955f6caSJeff Kirsher netif_wake_queue(dev); 1220b955f6caSJeff Kirsher return; 1221b955f6caSJeff Kirsher } 1222b955f6caSJeff Kirsher 1223b955f6caSJeff Kirsher netif_stop_queue(dev); 1224b955f6caSJeff Kirsher 1225b955f6caSJeff Kirsher STOP_LANCE(lp); 1226b955f6caSJeff Kirsher lp->init_ring(dev); 1227b955f6caSJeff Kirsher 1228b955f6caSJeff Kirsher if (lp->pio_buffer) 1229b955f6caSJeff Kirsher mode = sbus_readw(&ib_iomem->mode); 1230b955f6caSJeff Kirsher else 1231b955f6caSJeff Kirsher mode = ib_mem->mode; 1232b955f6caSJeff Kirsher if (dev->flags & IFF_PROMISC) { 1233b955f6caSJeff Kirsher mode |= LE_MO_PROM; 1234b955f6caSJeff Kirsher if (lp->pio_buffer) 1235b955f6caSJeff Kirsher sbus_writew(mode, &ib_iomem->mode); 1236b955f6caSJeff Kirsher else 1237b955f6caSJeff Kirsher ib_mem->mode = mode; 1238b955f6caSJeff Kirsher } else { 1239b955f6caSJeff Kirsher mode &= ~LE_MO_PROM; 1240b955f6caSJeff Kirsher if (lp->pio_buffer) 1241b955f6caSJeff Kirsher sbus_writew(mode, &ib_iomem->mode); 1242b955f6caSJeff Kirsher else 1243b955f6caSJeff Kirsher ib_mem->mode = mode; 1244b955f6caSJeff Kirsher lance_load_multicast(dev); 1245b955f6caSJeff Kirsher } 1246b955f6caSJeff Kirsher load_csrs(lp); 1247b955f6caSJeff Kirsher init_restart_lance(lp); 1248b955f6caSJeff Kirsher netif_wake_queue(dev); 1249b955f6caSJeff Kirsher } 1250b955f6caSJeff Kirsher 1251b955f6caSJeff Kirsher static void lance_set_multicast_retry(unsigned long _opaque) 1252b955f6caSJeff Kirsher { 1253b955f6caSJeff Kirsher struct net_device *dev = (struct net_device *) _opaque; 1254b955f6caSJeff Kirsher 1255b955f6caSJeff Kirsher lance_set_multicast(dev); 1256b955f6caSJeff Kirsher } 1257b955f6caSJeff Kirsher 1258b955f6caSJeff Kirsher static void lance_free_hwresources(struct lance_private *lp) 1259b955f6caSJeff Kirsher { 1260b955f6caSJeff Kirsher if (lp->lregs) 1261b955f6caSJeff Kirsher of_iounmap(&lp->op->resource[0], lp->lregs, LANCE_REG_SIZE); 1262b955f6caSJeff Kirsher if (lp->dregs) { 1263b955f6caSJeff Kirsher struct platform_device *ledma = lp->ledma; 1264b955f6caSJeff Kirsher 1265b955f6caSJeff Kirsher of_iounmap(&ledma->resource[0], lp->dregs, 1266b955f6caSJeff Kirsher resource_size(&ledma->resource[0])); 1267b955f6caSJeff Kirsher } 1268b955f6caSJeff Kirsher if (lp->init_block_iomem) { 1269b955f6caSJeff Kirsher of_iounmap(&lp->lebuffer->resource[0], lp->init_block_iomem, 1270b955f6caSJeff Kirsher sizeof(struct lance_init_block)); 1271b955f6caSJeff Kirsher } else if (lp->init_block_mem) { 1272b955f6caSJeff Kirsher dma_free_coherent(&lp->op->dev, 1273b955f6caSJeff Kirsher sizeof(struct lance_init_block), 1274b955f6caSJeff Kirsher lp->init_block_mem, 1275b955f6caSJeff Kirsher lp->init_block_dvma); 1276b955f6caSJeff Kirsher } 1277b955f6caSJeff Kirsher } 1278b955f6caSJeff Kirsher 1279b955f6caSJeff Kirsher /* Ethtool support... */ 1280b955f6caSJeff Kirsher static void sparc_lance_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) 1281b955f6caSJeff Kirsher { 12827826d43fSJiri Pirko strlcpy(info->driver, "sunlance", sizeof(info->driver)); 12837826d43fSJiri Pirko strlcpy(info->version, "2.02", sizeof(info->version)); 1284b955f6caSJeff Kirsher } 1285b955f6caSJeff Kirsher 1286b955f6caSJeff Kirsher static const struct ethtool_ops sparc_lance_ethtool_ops = { 1287b955f6caSJeff Kirsher .get_drvinfo = sparc_lance_get_drvinfo, 1288b955f6caSJeff Kirsher .get_link = ethtool_op_get_link, 1289b955f6caSJeff Kirsher }; 1290b955f6caSJeff Kirsher 1291b955f6caSJeff Kirsher static const struct net_device_ops sparc_lance_ops = { 1292b955f6caSJeff Kirsher .ndo_open = lance_open, 1293b955f6caSJeff Kirsher .ndo_stop = lance_close, 1294b955f6caSJeff Kirsher .ndo_start_xmit = lance_start_xmit, 1295afc4b13dSJiri Pirko .ndo_set_rx_mode = lance_set_multicast, 1296b955f6caSJeff Kirsher .ndo_tx_timeout = lance_tx_timeout, 1297b955f6caSJeff Kirsher .ndo_change_mtu = eth_change_mtu, 1298b955f6caSJeff Kirsher .ndo_set_mac_address = eth_mac_addr, 1299b955f6caSJeff Kirsher .ndo_validate_addr = eth_validate_addr, 1300b955f6caSJeff Kirsher }; 1301b955f6caSJeff Kirsher 13020cb0568dSBill Pemberton static int sparc_lance_probe_one(struct platform_device *op, 1303b955f6caSJeff Kirsher struct platform_device *ledma, 1304b955f6caSJeff Kirsher struct platform_device *lebuffer) 1305b955f6caSJeff Kirsher { 1306b955f6caSJeff Kirsher struct device_node *dp = op->dev.of_node; 1307b955f6caSJeff Kirsher static unsigned version_printed; 1308b955f6caSJeff Kirsher struct lance_private *lp; 1309b955f6caSJeff Kirsher struct net_device *dev; 1310b955f6caSJeff Kirsher int i; 1311b955f6caSJeff Kirsher 1312b955f6caSJeff Kirsher dev = alloc_etherdev(sizeof(struct lance_private) + 8); 1313b955f6caSJeff Kirsher if (!dev) 1314b955f6caSJeff Kirsher return -ENOMEM; 1315b955f6caSJeff Kirsher 1316b955f6caSJeff Kirsher lp = netdev_priv(dev); 1317b955f6caSJeff Kirsher 1318b955f6caSJeff Kirsher if (sparc_lance_debug && version_printed++ == 0) 1319b955f6caSJeff Kirsher printk (KERN_INFO "%s", version); 1320b955f6caSJeff Kirsher 1321b955f6caSJeff Kirsher spin_lock_init(&lp->lock); 1322b955f6caSJeff Kirsher 1323b955f6caSJeff Kirsher /* Copy the IDPROM ethernet address to the device structure, later we 1324b955f6caSJeff Kirsher * will copy the address in the device structure to the lance 1325b955f6caSJeff Kirsher * initialization block. 1326b955f6caSJeff Kirsher */ 1327b955f6caSJeff Kirsher for (i = 0; i < 6; i++) 1328b955f6caSJeff Kirsher dev->dev_addr[i] = idprom->id_ethaddr[i]; 1329b955f6caSJeff Kirsher 1330b955f6caSJeff Kirsher /* Get the IO region */ 1331b955f6caSJeff Kirsher lp->lregs = of_ioremap(&op->resource[0], 0, 1332b955f6caSJeff Kirsher LANCE_REG_SIZE, lancestr); 1333b955f6caSJeff Kirsher if (!lp->lregs) { 1334b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map registers.\n"); 1335b955f6caSJeff Kirsher goto fail; 1336b955f6caSJeff Kirsher } 1337b955f6caSJeff Kirsher 1338b955f6caSJeff Kirsher lp->ledma = ledma; 1339b955f6caSJeff Kirsher if (lp->ledma) { 1340b955f6caSJeff Kirsher lp->dregs = of_ioremap(&ledma->resource[0], 0, 1341b955f6caSJeff Kirsher resource_size(&ledma->resource[0]), 1342b955f6caSJeff Kirsher "ledma"); 1343b955f6caSJeff Kirsher if (!lp->dregs) { 1344b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map " 1345b955f6caSJeff Kirsher "ledma registers.\n"); 1346b955f6caSJeff Kirsher goto fail; 1347b955f6caSJeff Kirsher } 1348b955f6caSJeff Kirsher } 1349b955f6caSJeff Kirsher 1350b955f6caSJeff Kirsher lp->op = op; 1351b955f6caSJeff Kirsher lp->lebuffer = lebuffer; 1352b955f6caSJeff Kirsher if (lebuffer) { 1353b955f6caSJeff Kirsher /* sanity check */ 1354b955f6caSJeff Kirsher if (lebuffer->resource[0].start & 7) { 1355b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: ERROR: Rx and Tx rings not on even boundary.\n"); 1356b955f6caSJeff Kirsher goto fail; 1357b955f6caSJeff Kirsher } 1358b955f6caSJeff Kirsher lp->init_block_iomem = 1359b955f6caSJeff Kirsher of_ioremap(&lebuffer->resource[0], 0, 1360b955f6caSJeff Kirsher sizeof(struct lance_init_block), "lebuffer"); 1361b955f6caSJeff Kirsher if (!lp->init_block_iomem) { 1362b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot map PIO buffer.\n"); 1363b955f6caSJeff Kirsher goto fail; 1364b955f6caSJeff Kirsher } 1365b955f6caSJeff Kirsher lp->init_block_dvma = 0; 1366b955f6caSJeff Kirsher lp->pio_buffer = 1; 1367b955f6caSJeff Kirsher lp->init_ring = lance_init_ring_pio; 1368b955f6caSJeff Kirsher lp->rx = lance_rx_pio; 1369b955f6caSJeff Kirsher lp->tx = lance_tx_pio; 1370b955f6caSJeff Kirsher } else { 1371b955f6caSJeff Kirsher lp->init_block_mem = 1372b955f6caSJeff Kirsher dma_alloc_coherent(&op->dev, 1373b955f6caSJeff Kirsher sizeof(struct lance_init_block), 1374b955f6caSJeff Kirsher &lp->init_block_dvma, GFP_ATOMIC); 1375d0320f75SJoe Perches if (!lp->init_block_mem) 1376b955f6caSJeff Kirsher goto fail; 1377d0320f75SJoe Perches 1378b955f6caSJeff Kirsher lp->pio_buffer = 0; 1379b955f6caSJeff Kirsher lp->init_ring = lance_init_ring_dvma; 1380b955f6caSJeff Kirsher lp->rx = lance_rx_dvma; 1381b955f6caSJeff Kirsher lp->tx = lance_tx_dvma; 1382b955f6caSJeff Kirsher } 1383b955f6caSJeff Kirsher lp->busmaster_regval = of_getintprop_default(dp, "busmaster-regval", 1384b955f6caSJeff Kirsher (LE_C3_BSWP | 1385b955f6caSJeff Kirsher LE_C3_ACON | 1386b955f6caSJeff Kirsher LE_C3_BCON)); 1387b955f6caSJeff Kirsher 1388b955f6caSJeff Kirsher lp->name = lancestr; 1389b955f6caSJeff Kirsher 1390b955f6caSJeff Kirsher lp->burst_sizes = 0; 1391b955f6caSJeff Kirsher if (lp->ledma) { 1392b955f6caSJeff Kirsher struct device_node *ledma_dp = ledma->dev.of_node; 1393b955f6caSJeff Kirsher struct device_node *sbus_dp; 1394b955f6caSJeff Kirsher unsigned int sbmask; 1395b955f6caSJeff Kirsher const char *prop; 1396b955f6caSJeff Kirsher u32 csr; 1397b955f6caSJeff Kirsher 1398b955f6caSJeff Kirsher /* Find burst-size property for ledma */ 1399b955f6caSJeff Kirsher lp->burst_sizes = of_getintprop_default(ledma_dp, 1400b955f6caSJeff Kirsher "burst-sizes", 0); 1401b955f6caSJeff Kirsher 1402b955f6caSJeff Kirsher /* ledma may be capable of fast bursts, but sbus may not. */ 1403b955f6caSJeff Kirsher sbus_dp = ledma_dp->parent; 1404b955f6caSJeff Kirsher sbmask = of_getintprop_default(sbus_dp, "burst-sizes", 1405b955f6caSJeff Kirsher DMA_BURSTBITS); 1406b955f6caSJeff Kirsher lp->burst_sizes &= sbmask; 1407b955f6caSJeff Kirsher 1408b955f6caSJeff Kirsher /* Get the cable-selection property */ 1409b955f6caSJeff Kirsher prop = of_get_property(ledma_dp, "cable-selection", NULL); 1410b955f6caSJeff Kirsher if (!prop || prop[0] == '\0') { 1411b955f6caSJeff Kirsher struct device_node *nd; 1412b955f6caSJeff Kirsher 1413b955f6caSJeff Kirsher printk(KERN_INFO "SunLance: using " 1414b955f6caSJeff Kirsher "auto-carrier-detection.\n"); 1415b955f6caSJeff Kirsher 1416b955f6caSJeff Kirsher nd = of_find_node_by_path("/options"); 1417b955f6caSJeff Kirsher if (!nd) 1418b955f6caSJeff Kirsher goto no_link_test; 1419b955f6caSJeff Kirsher 1420b955f6caSJeff Kirsher prop = of_get_property(nd, "tpe-link-test?", NULL); 1421b955f6caSJeff Kirsher if (!prop) 1422b955f6caSJeff Kirsher goto no_link_test; 1423b955f6caSJeff Kirsher 1424b955f6caSJeff Kirsher if (strcmp(prop, "true")) { 1425b955f6caSJeff Kirsher printk(KERN_NOTICE "SunLance: warning: overriding option " 1426b955f6caSJeff Kirsher "'tpe-link-test?'\n"); 1427b955f6caSJeff Kirsher printk(KERN_NOTICE "SunLance: warning: mail any problems " 1428b955f6caSJeff Kirsher "to ecd@skynet.be\n"); 1429b955f6caSJeff Kirsher auxio_set_lte(AUXIO_LTE_ON); 1430b955f6caSJeff Kirsher } 1431b955f6caSJeff Kirsher no_link_test: 1432b955f6caSJeff Kirsher lp->auto_select = 1; 1433b955f6caSJeff Kirsher lp->tpe = 0; 1434b955f6caSJeff Kirsher } else if (!strcmp(prop, "aui")) { 1435b955f6caSJeff Kirsher lp->auto_select = 0; 1436b955f6caSJeff Kirsher lp->tpe = 0; 1437b955f6caSJeff Kirsher } else { 1438b955f6caSJeff Kirsher lp->auto_select = 0; 1439b955f6caSJeff Kirsher lp->tpe = 1; 1440b955f6caSJeff Kirsher } 1441b955f6caSJeff Kirsher 1442b955f6caSJeff Kirsher /* Reset ledma */ 1443b955f6caSJeff Kirsher csr = sbus_readl(lp->dregs + DMA_CSR); 1444b955f6caSJeff Kirsher sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); 1445b955f6caSJeff Kirsher udelay(200); 1446b955f6caSJeff Kirsher sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); 1447b955f6caSJeff Kirsher } else 1448b955f6caSJeff Kirsher lp->dregs = NULL; 1449b955f6caSJeff Kirsher 1450b955f6caSJeff Kirsher lp->dev = dev; 1451b955f6caSJeff Kirsher SET_NETDEV_DEV(dev, &op->dev); 1452b955f6caSJeff Kirsher dev->watchdog_timeo = 5*HZ; 1453b955f6caSJeff Kirsher dev->ethtool_ops = &sparc_lance_ethtool_ops; 1454b955f6caSJeff Kirsher dev->netdev_ops = &sparc_lance_ops; 1455b955f6caSJeff Kirsher 1456b955f6caSJeff Kirsher dev->irq = op->archdata.irqs[0]; 1457b955f6caSJeff Kirsher 1458b955f6caSJeff Kirsher /* We cannot sleep if the chip is busy during a 1459b955f6caSJeff Kirsher * multicast list update event, because such events 1460b955f6caSJeff Kirsher * can occur from interrupts (ex. IPv6). So we 1461b955f6caSJeff Kirsher * use a timer to try again later when necessary. -DaveM 1462b955f6caSJeff Kirsher */ 1463b955f6caSJeff Kirsher init_timer(&lp->multicast_timer); 1464b955f6caSJeff Kirsher lp->multicast_timer.data = (unsigned long) dev; 1465b955f6caSJeff Kirsher lp->multicast_timer.function = lance_set_multicast_retry; 1466b955f6caSJeff Kirsher 1467b955f6caSJeff Kirsher if (register_netdev(dev)) { 1468b955f6caSJeff Kirsher printk(KERN_ERR "SunLance: Cannot register device.\n"); 1469b955f6caSJeff Kirsher goto fail; 1470b955f6caSJeff Kirsher } 1471b955f6caSJeff Kirsher 14728513fbd8SJingoo Han platform_set_drvdata(op, lp); 1473b955f6caSJeff Kirsher 1474b955f6caSJeff Kirsher printk(KERN_INFO "%s: LANCE %pM\n", 1475b955f6caSJeff Kirsher dev->name, dev->dev_addr); 1476b955f6caSJeff Kirsher 1477b955f6caSJeff Kirsher return 0; 1478b955f6caSJeff Kirsher 1479b955f6caSJeff Kirsher fail: 1480b955f6caSJeff Kirsher lance_free_hwresources(lp); 1481b955f6caSJeff Kirsher free_netdev(dev); 1482b955f6caSJeff Kirsher return -ENODEV; 1483b955f6caSJeff Kirsher } 1484b955f6caSJeff Kirsher 14850cb0568dSBill Pemberton static int sunlance_sbus_probe(struct platform_device *op) 1486b955f6caSJeff Kirsher { 1487b955f6caSJeff Kirsher struct platform_device *parent = to_platform_device(op->dev.parent); 1488b955f6caSJeff Kirsher struct device_node *parent_dp = parent->dev.of_node; 1489b955f6caSJeff Kirsher int err; 1490b955f6caSJeff Kirsher 1491b955f6caSJeff Kirsher if (!strcmp(parent_dp->name, "ledma")) { 1492b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, parent, NULL); 1493b955f6caSJeff Kirsher } else if (!strcmp(parent_dp->name, "lebuffer")) { 1494b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, NULL, parent); 1495b955f6caSJeff Kirsher } else 1496b955f6caSJeff Kirsher err = sparc_lance_probe_one(op, NULL, NULL); 1497b955f6caSJeff Kirsher 1498b955f6caSJeff Kirsher return err; 1499b955f6caSJeff Kirsher } 1500b955f6caSJeff Kirsher 15010cb0568dSBill Pemberton static int sunlance_sbus_remove(struct platform_device *op) 1502b955f6caSJeff Kirsher { 15038513fbd8SJingoo Han struct lance_private *lp = platform_get_drvdata(op); 1504b955f6caSJeff Kirsher struct net_device *net_dev = lp->dev; 1505b955f6caSJeff Kirsher 1506b955f6caSJeff Kirsher unregister_netdev(net_dev); 1507b955f6caSJeff Kirsher 1508b955f6caSJeff Kirsher lance_free_hwresources(lp); 1509b955f6caSJeff Kirsher 1510b955f6caSJeff Kirsher free_netdev(net_dev); 1511b955f6caSJeff Kirsher 1512b955f6caSJeff Kirsher return 0; 1513b955f6caSJeff Kirsher } 1514b955f6caSJeff Kirsher 1515b955f6caSJeff Kirsher static const struct of_device_id sunlance_sbus_match[] = { 1516b955f6caSJeff Kirsher { 1517b955f6caSJeff Kirsher .name = "le", 1518b955f6caSJeff Kirsher }, 1519b955f6caSJeff Kirsher {}, 1520b955f6caSJeff Kirsher }; 1521b955f6caSJeff Kirsher 1522b955f6caSJeff Kirsher MODULE_DEVICE_TABLE(of, sunlance_sbus_match); 1523b955f6caSJeff Kirsher 1524b955f6caSJeff Kirsher static struct platform_driver sunlance_sbus_driver = { 1525b955f6caSJeff Kirsher .driver = { 1526b955f6caSJeff Kirsher .name = "sunlance", 1527b955f6caSJeff Kirsher .of_match_table = sunlance_sbus_match, 1528b955f6caSJeff Kirsher }, 1529b955f6caSJeff Kirsher .probe = sunlance_sbus_probe, 15300cb0568dSBill Pemberton .remove = sunlance_sbus_remove, 1531b955f6caSJeff Kirsher }; 1532b955f6caSJeff Kirsher 1533db62f684SAxel Lin module_platform_driver(sunlance_sbus_driver); 1534