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1380 lines
35 KiB
1380 lines
35 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Lance ethernet driver for the MIPS processor based |
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* DECstation family |
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* |
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* |
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* adopted from sunlance.c by Richard van den Berg |
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* |
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* Copyright (C) 2002, 2003, 2005, 2006 Maciej W. Rozycki |
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* |
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* additional sources: |
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* - PMAD-AA TURBOchannel Ethernet Module Functional Specification, |
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* Revision 1.2 |
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* |
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* History: |
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* |
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* v0.001: The kernel accepts the code and it shows the hardware address. |
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* |
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* v0.002: Removed most sparc stuff, left only some module and dma stuff. |
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* |
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* v0.003: Enhanced base address calculation from proposals by |
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* Harald Koerfgen and Thomas Riemer. |
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* |
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* v0.004: lance-regs is pointing at the right addresses, added prom |
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* check. First start of address mapping and DMA. |
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* |
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* v0.005: started to play around with LANCE-DMA. This driver will not |
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* work for non IOASIC lances. HK |
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* |
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* v0.006: added pointer arrays to lance_private and setup routine for |
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* them in dec_lance_init. HK |
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* |
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* v0.007: Big shit. The LANCE seems to use a different DMA mechanism to |
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* access the init block. This looks like one (short) word at a |
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* time, but the smallest amount the IOASIC can transfer is a |
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* (long) word. So we have a 2-2 padding here. Changed |
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* lance_init_block accordingly. The 16-16 padding for the buffers |
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* seems to be correct. HK |
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* |
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* v0.008: mods to make PMAX_LANCE work. 01/09/1999 triemer |
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* |
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* v0.009: Module support fixes, multiple interfaces support, various |
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* bits. macro |
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* |
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* v0.010: Fixes for the PMAD mapping of the LANCE buffer and for the |
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* PMAX requirement to only use halfword accesses to the |
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* buffer. macro |
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* |
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* v0.011: Converted the PMAD to the driver model. macro |
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*/ |
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#include <linux/crc32.h> |
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#include <linux/delay.h> |
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#include <linux/errno.h> |
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#include <linux/if_ether.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/spinlock.h> |
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#include <linux/stddef.h> |
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#include <linux/string.h> |
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#include <linux/tc.h> |
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#include <linux/types.h> |
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#include <asm/addrspace.h> |
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|
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#include <asm/dec/interrupts.h> |
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#include <asm/dec/ioasic.h> |
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#include <asm/dec/ioasic_addrs.h> |
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#include <asm/dec/kn01.h> |
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#include <asm/dec/machtype.h> |
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#include <asm/dec/system.h> |
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|
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static const char version[] = |
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"declance.c: v0.011 by Linux MIPS DECstation task force\n"; |
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|
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MODULE_AUTHOR("Linux MIPS DECstation task force"); |
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MODULE_DESCRIPTION("DEC LANCE (DECstation onboard, PMAD-xx) driver"); |
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MODULE_LICENSE("GPL"); |
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#define __unused __attribute__ ((unused)) |
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|
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/* |
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* card types |
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*/ |
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#define ASIC_LANCE 1 |
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#define PMAD_LANCE 2 |
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#define PMAX_LANCE 3 |
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#define LE_CSR0 0 |
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#define LE_CSR1 1 |
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#define LE_CSR2 2 |
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#define LE_CSR3 3 |
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#define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ |
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#define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ |
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#define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ |
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#define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ |
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#define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ |
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#define LE_C0_MERR 0x0800 /* ME: Memory error */ |
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#define LE_C0_RINT 0x0400 /* Received interrupt */ |
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#define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ |
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#define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ |
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#define LE_C0_INTR 0x0080 /* Interrupt or error */ |
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#define LE_C0_INEA 0x0040 /* Interrupt enable */ |
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#define LE_C0_RXON 0x0020 /* Receiver on */ |
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#define LE_C0_TXON 0x0010 /* Transmitter on */ |
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#define LE_C0_TDMD 0x0008 /* Transmitter demand */ |
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#define LE_C0_STOP 0x0004 /* Stop the card */ |
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#define LE_C0_STRT 0x0002 /* Start the card */ |
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#define LE_C0_INIT 0x0001 /* Init the card */ |
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#define LE_C3_BSWP 0x4 /* SWAP */ |
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#define LE_C3_ACON 0x2 /* ALE Control */ |
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#define LE_C3_BCON 0x1 /* Byte control */ |
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|
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/* Receive message descriptor 1 */ |
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#define LE_R1_OWN 0x8000 /* Who owns the entry */ |
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#define LE_R1_ERR 0x4000 /* Error: if FRA, OFL, CRC or BUF is set */ |
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#define LE_R1_FRA 0x2000 /* FRA: Frame error */ |
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#define LE_R1_OFL 0x1000 /* OFL: Frame overflow */ |
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#define LE_R1_CRC 0x0800 /* CRC error */ |
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#define LE_R1_BUF 0x0400 /* BUF: Buffer error */ |
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#define LE_R1_SOP 0x0200 /* Start of packet */ |
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#define LE_R1_EOP 0x0100 /* End of packet */ |
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#define LE_R1_POK 0x0300 /* Packet is complete: SOP + EOP */ |
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|
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/* Transmit message descriptor 1 */ |
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#define LE_T1_OWN 0x8000 /* Lance owns the packet */ |
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#define LE_T1_ERR 0x4000 /* Error summary */ |
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#define LE_T1_EMORE 0x1000 /* Error: more than one retry needed */ |
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#define LE_T1_EONE 0x0800 /* Error: one retry needed */ |
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#define LE_T1_EDEF 0x0400 /* Error: deferred */ |
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#define LE_T1_SOP 0x0200 /* Start of packet */ |
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#define LE_T1_EOP 0x0100 /* End of packet */ |
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#define LE_T1_POK 0x0300 /* Packet is complete: SOP + EOP */ |
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#define LE_T3_BUF 0x8000 /* Buffer error */ |
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#define LE_T3_UFL 0x4000 /* Error underflow */ |
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#define LE_T3_LCOL 0x1000 /* Error late collision */ |
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#define LE_T3_CLOS 0x0800 /* Error carrier loss */ |
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#define LE_T3_RTY 0x0400 /* Error retry */ |
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#define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ |
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/* Define: 2^4 Tx buffers and 2^4 Rx buffers */ |
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#ifndef LANCE_LOG_TX_BUFFERS |
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#define LANCE_LOG_TX_BUFFERS 4 |
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#define LANCE_LOG_RX_BUFFERS 4 |
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#endif |
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#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) |
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#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) |
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#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) |
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#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) |
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#define PKT_BUF_SZ 1536 |
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#define RX_BUFF_SIZE PKT_BUF_SZ |
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#define TX_BUFF_SIZE PKT_BUF_SZ |
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#undef TEST_HITS |
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#define ZERO 0 |
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/* |
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* The DS2100/3100 have a linear 64 kB buffer which supports halfword |
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* accesses only. Each halfword of the buffer is word-aligned in the |
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* CPU address space. |
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* |
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* The PMAD-AA has a 128 kB buffer on-board. |
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* |
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* The IOASIC LANCE devices use a shared memory region. This region |
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* as seen from the CPU is (max) 128 kB long and has to be on an 128 kB |
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* boundary. The LANCE sees this as a 64 kB long continuous memory |
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* region. |
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* |
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* The LANCE's DMA address is used as an index in this buffer and DMA |
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* takes place in bursts of eight 16-bit words which are packed into |
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* four 32-bit words by the IOASIC. This leads to a strange padding: |
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* 16 bytes of valid data followed by a 16 byte gap :-(. |
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*/ |
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struct lance_rx_desc { |
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unsigned short rmd0; /* low address of packet */ |
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unsigned short rmd1; /* high address of packet |
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and descriptor bits */ |
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short length; /* 2s complement (negative!) |
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of buffer length */ |
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unsigned short mblength; /* actual number of bytes received */ |
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}; |
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struct lance_tx_desc { |
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unsigned short tmd0; /* low address of packet */ |
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unsigned short tmd1; /* high address of packet |
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and descriptor bits */ |
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short length; /* 2s complement (negative!) |
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of buffer length */ |
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unsigned short misc; |
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}; |
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/* First part of the LANCE initialization block, described in databook. */ |
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struct lance_init_block { |
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unsigned short mode; /* pre-set mode (reg. 15) */ |
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unsigned short phys_addr[3]; /* physical ethernet address */ |
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unsigned short filter[4]; /* multicast filter */ |
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/* Receive and transmit ring base, along with extra bits. */ |
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unsigned short rx_ptr; /* receive descriptor addr */ |
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unsigned short rx_len; /* receive len and high addr */ |
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unsigned short tx_ptr; /* transmit descriptor addr */ |
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unsigned short tx_len; /* transmit len and high addr */ |
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short gap[4]; |
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/* The buffer descriptors */ |
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struct lance_rx_desc brx_ring[RX_RING_SIZE]; |
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struct lance_tx_desc btx_ring[TX_RING_SIZE]; |
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}; |
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#define BUF_OFFSET_CPU sizeof(struct lance_init_block) |
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#define BUF_OFFSET_LNC sizeof(struct lance_init_block) |
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#define shift_off(off, type) \ |
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(type == ASIC_LANCE || type == PMAX_LANCE ? off << 1 : off) |
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#define lib_off(rt, type) \ |
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shift_off(offsetof(struct lance_init_block, rt), type) |
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#define lib_ptr(ib, rt, type) \ |
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((volatile u16 *)((u8 *)(ib) + lib_off(rt, type))) |
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#define rds_off(rt, type) \ |
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shift_off(offsetof(struct lance_rx_desc, rt), type) |
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#define rds_ptr(rd, rt, type) \ |
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((volatile u16 *)((u8 *)(rd) + rds_off(rt, type))) |
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#define tds_off(rt, type) \ |
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shift_off(offsetof(struct lance_tx_desc, rt), type) |
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#define tds_ptr(td, rt, type) \ |
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((volatile u16 *)((u8 *)(td) + tds_off(rt, type))) |
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struct lance_private { |
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struct net_device *next; |
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int type; |
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int dma_irq; |
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volatile struct lance_regs *ll; |
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spinlock_t lock; |
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int rx_new, tx_new; |
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int rx_old, tx_old; |
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unsigned short busmaster_regval; |
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struct timer_list multicast_timer; |
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struct net_device *dev; |
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/* Pointers to the ring buffers as seen from the CPU */ |
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char *rx_buf_ptr_cpu[RX_RING_SIZE]; |
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char *tx_buf_ptr_cpu[TX_RING_SIZE]; |
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/* Pointers to the ring buffers as seen from the LANCE */ |
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uint rx_buf_ptr_lnc[RX_RING_SIZE]; |
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uint tx_buf_ptr_lnc[TX_RING_SIZE]; |
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}; |
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#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ |
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lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ |
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lp->tx_old - lp->tx_new-1) |
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/* The lance control ports are at an absolute address, machine and tc-slot |
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* dependent. |
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* DECstations do only 32-bit access and the LANCE uses 16 bit addresses, |
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* so we have to give the structure an extra member making rap pointing |
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* at the right address |
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*/ |
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struct lance_regs { |
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volatile unsigned short rdp; /* register data port */ |
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unsigned short pad; |
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volatile unsigned short rap; /* register address port */ |
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}; |
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int dec_lance_debug = 2; |
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static struct tc_driver dec_lance_tc_driver; |
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static struct net_device *root_lance_dev; |
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static inline void writereg(volatile unsigned short *regptr, short value) |
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{ |
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*regptr = value; |
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iob(); |
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} |
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/* Load the CSR registers */ |
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static void load_csrs(struct lance_private *lp) |
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{ |
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volatile struct lance_regs *ll = lp->ll; |
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uint leptr; |
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/* The address space as seen from the LANCE |
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* begins at address 0. HK |
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*/ |
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leptr = 0; |
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writereg(&ll->rap, LE_CSR1); |
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writereg(&ll->rdp, (leptr & 0xFFFF)); |
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writereg(&ll->rap, LE_CSR2); |
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writereg(&ll->rdp, leptr >> 16); |
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writereg(&ll->rap, LE_CSR3); |
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writereg(&ll->rdp, lp->busmaster_regval); |
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/* Point back to csr0 */ |
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writereg(&ll->rap, LE_CSR0); |
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} |
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/* |
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* Our specialized copy routines |
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* |
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*/ |
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static void cp_to_buf(const int type, void *to, const void *from, int len) |
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{ |
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unsigned short *tp; |
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const unsigned short *fp; |
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unsigned short clen; |
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unsigned char *rtp; |
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const unsigned char *rfp; |
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if (type == PMAD_LANCE) { |
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memcpy(to, from, len); |
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} else if (type == PMAX_LANCE) { |
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clen = len >> 1; |
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tp = to; |
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fp = from; |
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while (clen--) { |
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*tp++ = *fp++; |
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tp++; |
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} |
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clen = len & 1; |
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rtp = (unsigned char *)tp; |
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rfp = (const unsigned char *)fp; |
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while (clen--) { |
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*rtp++ = *rfp++; |
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} |
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} else { |
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/* |
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* copy 16 Byte chunks |
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*/ |
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clen = len >> 4; |
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tp = to; |
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fp = from; |
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while (clen--) { |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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tp += 8; |
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} |
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/* |
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* do the rest, if any. |
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*/ |
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clen = len & 15; |
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rtp = (unsigned char *)tp; |
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rfp = (const unsigned char *)fp; |
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while (clen--) { |
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*rtp++ = *rfp++; |
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} |
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} |
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iob(); |
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} |
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static void cp_from_buf(const int type, void *to, const void *from, int len) |
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{ |
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unsigned short *tp; |
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const unsigned short *fp; |
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unsigned short clen; |
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unsigned char *rtp; |
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const unsigned char *rfp; |
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|
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if (type == PMAD_LANCE) { |
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memcpy(to, from, len); |
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} else if (type == PMAX_LANCE) { |
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clen = len >> 1; |
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tp = to; |
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fp = from; |
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while (clen--) { |
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*tp++ = *fp++; |
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fp++; |
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} |
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clen = len & 1; |
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rtp = (unsigned char *)tp; |
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rfp = (const unsigned char *)fp; |
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while (clen--) { |
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*rtp++ = *rfp++; |
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} |
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} else { |
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|
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/* |
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* copy 16 Byte chunks |
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*/ |
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clen = len >> 4; |
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tp = to; |
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fp = from; |
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while (clen--) { |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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*tp++ = *fp++; |
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fp += 8; |
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} |
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|
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/* |
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* do the rest, if any. |
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*/ |
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clen = len & 15; |
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rtp = (unsigned char *)tp; |
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rfp = (const unsigned char *)fp; |
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while (clen--) { |
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*rtp++ = *rfp++; |
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} |
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} |
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|
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} |
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|
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/* Setup the Lance Rx and Tx rings */ |
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static void lance_init_ring(struct net_device *dev) |
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{ |
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struct lance_private *lp = netdev_priv(dev); |
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volatile u16 *ib = (volatile u16 *)dev->mem_start; |
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uint leptr; |
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int i; |
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|
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/* Lock out other processes while setting up hardware */ |
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netif_stop_queue(dev); |
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lp->rx_new = lp->tx_new = 0; |
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lp->rx_old = lp->tx_old = 0; |
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|
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/* Copy the ethernet address to the lance init block. |
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* XXX bit 0 of the physical address registers has to be zero |
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*/ |
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*lib_ptr(ib, phys_addr[0], lp->type) = (dev->dev_addr[1] << 8) | |
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dev->dev_addr[0]; |
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*lib_ptr(ib, phys_addr[1], lp->type) = (dev->dev_addr[3] << 8) | |
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dev->dev_addr[2]; |
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*lib_ptr(ib, phys_addr[2], lp->type) = (dev->dev_addr[5] << 8) | |
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dev->dev_addr[4]; |
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/* Setup the initialization block */ |
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|
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/* Setup rx descriptor pointer */ |
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leptr = offsetof(struct lance_init_block, brx_ring); |
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*lib_ptr(ib, rx_len, lp->type) = (LANCE_LOG_RX_BUFFERS << 13) | |
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(leptr >> 16); |
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*lib_ptr(ib, rx_ptr, lp->type) = leptr; |
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if (ZERO) |
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printk("RX ptr: %8.8x(%8.8x)\n", |
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leptr, (uint)lib_off(brx_ring, lp->type)); |
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|
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/* Setup tx descriptor pointer */ |
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leptr = offsetof(struct lance_init_block, btx_ring); |
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*lib_ptr(ib, tx_len, lp->type) = (LANCE_LOG_TX_BUFFERS << 13) | |
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(leptr >> 16); |
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*lib_ptr(ib, tx_ptr, lp->type) = leptr; |
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if (ZERO) |
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printk("TX ptr: %8.8x(%8.8x)\n", |
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leptr, (uint)lib_off(btx_ring, lp->type)); |
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|
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if (ZERO) |
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printk("TX rings:\n"); |
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|
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/* Setup the Tx ring entries */ |
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for (i = 0; i < TX_RING_SIZE; i++) { |
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leptr = lp->tx_buf_ptr_lnc[i]; |
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*lib_ptr(ib, btx_ring[i].tmd0, lp->type) = leptr; |
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*lib_ptr(ib, btx_ring[i].tmd1, lp->type) = (leptr >> 16) & |
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0xff; |
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*lib_ptr(ib, btx_ring[i].length, lp->type) = 0xf000; |
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/* The ones required by tmd2 */ |
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*lib_ptr(ib, btx_ring[i].misc, lp->type) = 0; |
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if (i < 3 && ZERO) |
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printk("%d: %8.8x(%p)\n", |
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i, leptr, lp->tx_buf_ptr_cpu[i]); |
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} |
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|
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/* Setup the Rx ring entries */ |
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if (ZERO) |
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printk("RX rings:\n"); |
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for (i = 0; i < RX_RING_SIZE; i++) { |
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leptr = lp->rx_buf_ptr_lnc[i]; |
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*lib_ptr(ib, brx_ring[i].rmd0, lp->type) = leptr; |
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*lib_ptr(ib, brx_ring[i].rmd1, lp->type) = ((leptr >> 16) & |
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0xff) | |
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LE_R1_OWN; |
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*lib_ptr(ib, brx_ring[i].length, lp->type) = -RX_BUFF_SIZE | |
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0xf000; |
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*lib_ptr(ib, brx_ring[i].mblength, lp->type) = 0; |
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if (i < 3 && ZERO) |
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printk("%d: %8.8x(%p)\n", |
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i, leptr, lp->rx_buf_ptr_cpu[i]); |
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} |
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iob(); |
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} |
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|
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static int init_restart_lance(struct lance_private *lp) |
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{ |
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volatile struct lance_regs *ll = lp->ll; |
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int i; |
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|
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writereg(&ll->rap, LE_CSR0); |
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writereg(&ll->rdp, LE_C0_INIT); |
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|
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/* Wait for the lance to complete initialization */ |
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for (i = 0; (i < 100) && !(ll->rdp & LE_C0_IDON); i++) { |
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udelay(10); |
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} |
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if ((i == 100) || (ll->rdp & LE_C0_ERR)) { |
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printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", |
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i, ll->rdp); |
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return -1; |
|
} |
|
if ((ll->rdp & LE_C0_ERR)) { |
|
printk("LANCE unopened after %d ticks, csr0=%4.4x.\n", |
|
i, ll->rdp); |
|
return -1; |
|
} |
|
writereg(&ll->rdp, LE_C0_IDON); |
|
writereg(&ll->rdp, LE_C0_STRT); |
|
writereg(&ll->rdp, LE_C0_INEA); |
|
|
|
return 0; |
|
} |
|
|
|
static int lance_rx(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
volatile u16 *rd; |
|
unsigned short bits; |
|
int entry, len; |
|
struct sk_buff *skb; |
|
|
|
#ifdef TEST_HITS |
|
{ |
|
int i; |
|
|
|
printk("["); |
|
for (i = 0; i < RX_RING_SIZE; i++) { |
|
if (i == lp->rx_new) |
|
printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
|
lp->type) & |
|
LE_R1_OWN ? "_" : "X"); |
|
else |
|
printk("%s", *lib_ptr(ib, brx_ring[i].rmd1, |
|
lp->type) & |
|
LE_R1_OWN ? "." : "1"); |
|
} |
|
printk("]"); |
|
} |
|
#endif |
|
|
|
for (rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type); |
|
!((bits = *rds_ptr(rd, rmd1, lp->type)) & LE_R1_OWN); |
|
rd = lib_ptr(ib, brx_ring[lp->rx_new], lp->type)) { |
|
entry = lp->rx_new; |
|
|
|
/* We got an incomplete frame? */ |
|
if ((bits & LE_R1_POK) != LE_R1_POK) { |
|
dev->stats.rx_over_errors++; |
|
dev->stats.rx_errors++; |
|
} else if (bits & LE_R1_ERR) { |
|
/* Count only the end frame as a rx error, |
|
* not the beginning |
|
*/ |
|
if (bits & LE_R1_BUF) |
|
dev->stats.rx_fifo_errors++; |
|
if (bits & LE_R1_CRC) |
|
dev->stats.rx_crc_errors++; |
|
if (bits & LE_R1_OFL) |
|
dev->stats.rx_over_errors++; |
|
if (bits & LE_R1_FRA) |
|
dev->stats.rx_frame_errors++; |
|
if (bits & LE_R1_EOP) |
|
dev->stats.rx_errors++; |
|
} else { |
|
len = (*rds_ptr(rd, mblength, lp->type) & 0xfff) - 4; |
|
skb = netdev_alloc_skb(dev, len + 2); |
|
|
|
if (!skb) { |
|
dev->stats.rx_dropped++; |
|
*rds_ptr(rd, mblength, lp->type) = 0; |
|
*rds_ptr(rd, rmd1, lp->type) = |
|
((lp->rx_buf_ptr_lnc[entry] >> 16) & |
|
0xff) | LE_R1_OWN; |
|
lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; |
|
return 0; |
|
} |
|
dev->stats.rx_bytes += len; |
|
|
|
skb_reserve(skb, 2); /* 16 byte align */ |
|
skb_put(skb, len); /* make room */ |
|
|
|
cp_from_buf(lp->type, skb->data, |
|
lp->rx_buf_ptr_cpu[entry], len); |
|
|
|
skb->protocol = eth_type_trans(skb, dev); |
|
netif_rx(skb); |
|
dev->stats.rx_packets++; |
|
} |
|
|
|
/* Return the packet to the pool */ |
|
*rds_ptr(rd, mblength, lp->type) = 0; |
|
*rds_ptr(rd, length, lp->type) = -RX_BUFF_SIZE | 0xf000; |
|
*rds_ptr(rd, rmd1, lp->type) = |
|
((lp->rx_buf_ptr_lnc[entry] >> 16) & 0xff) | LE_R1_OWN; |
|
lp->rx_new = (entry + 1) & RX_RING_MOD_MASK; |
|
} |
|
return 0; |
|
} |
|
|
|
static void lance_tx(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile u16 *td; |
|
int i, j; |
|
int status; |
|
|
|
j = lp->tx_old; |
|
|
|
spin_lock(&lp->lock); |
|
|
|
for (i = j; i != lp->tx_new; i = j) { |
|
td = lib_ptr(ib, btx_ring[i], lp->type); |
|
/* If we hit a packet not owned by us, stop */ |
|
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_OWN) |
|
break; |
|
|
|
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_ERR) { |
|
status = *tds_ptr(td, misc, lp->type); |
|
|
|
dev->stats.tx_errors++; |
|
if (status & LE_T3_RTY) |
|
dev->stats.tx_aborted_errors++; |
|
if (status & LE_T3_LCOL) |
|
dev->stats.tx_window_errors++; |
|
|
|
if (status & LE_T3_CLOS) { |
|
dev->stats.tx_carrier_errors++; |
|
printk("%s: Carrier Lost\n", dev->name); |
|
/* Stop the lance */ |
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
goto out; |
|
} |
|
/* Buffer errors and underflows turn off the |
|
* transmitter, restart the adapter. |
|
*/ |
|
if (status & (LE_T3_BUF | LE_T3_UFL)) { |
|
dev->stats.tx_fifo_errors++; |
|
|
|
printk("%s: Tx: ERR_BUF|ERR_UFL, restarting\n", |
|
dev->name); |
|
/* Stop the lance */ |
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
goto out; |
|
} |
|
} else if ((*tds_ptr(td, tmd1, lp->type) & LE_T1_POK) == |
|
LE_T1_POK) { |
|
/* |
|
* So we don't count the packet more than once. |
|
*/ |
|
*tds_ptr(td, tmd1, lp->type) &= ~(LE_T1_POK); |
|
|
|
/* One collision before packet was sent. */ |
|
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EONE) |
|
dev->stats.collisions++; |
|
|
|
/* More than one collision, be optimistic. */ |
|
if (*tds_ptr(td, tmd1, lp->type) & LE_T1_EMORE) |
|
dev->stats.collisions += 2; |
|
|
|
dev->stats.tx_packets++; |
|
} |
|
j = (j + 1) & TX_RING_MOD_MASK; |
|
} |
|
lp->tx_old = j; |
|
out: |
|
if (netif_queue_stopped(dev) && |
|
TX_BUFFS_AVAIL > 0) |
|
netif_wake_queue(dev); |
|
|
|
spin_unlock(&lp->lock); |
|
} |
|
|
|
static irqreturn_t lance_dma_merr_int(int irq, void *dev_id) |
|
{ |
|
struct net_device *dev = dev_id; |
|
|
|
printk(KERN_ERR "%s: DMA error\n", dev->name); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
static irqreturn_t lance_interrupt(int irq, void *dev_id) |
|
{ |
|
struct net_device *dev = dev_id; |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int csr0; |
|
|
|
writereg(&ll->rap, LE_CSR0); |
|
csr0 = ll->rdp; |
|
|
|
/* Acknowledge all the interrupt sources ASAP */ |
|
writereg(&ll->rdp, csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT)); |
|
|
|
if ((csr0 & LE_C0_ERR)) { |
|
/* Clear the error condition */ |
|
writereg(&ll->rdp, LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | |
|
LE_C0_CERR | LE_C0_MERR); |
|
} |
|
if (csr0 & LE_C0_RINT) |
|
lance_rx(dev); |
|
|
|
if (csr0 & LE_C0_TINT) |
|
lance_tx(dev); |
|
|
|
if (csr0 & LE_C0_BABL) |
|
dev->stats.tx_errors++; |
|
|
|
if (csr0 & LE_C0_MISS) |
|
dev->stats.rx_errors++; |
|
|
|
if (csr0 & LE_C0_MERR) { |
|
printk("%s: Memory error, status %04x\n", dev->name, csr0); |
|
|
|
writereg(&ll->rdp, LE_C0_STOP); |
|
|
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
writereg(&ll->rdp, LE_C0_INEA); |
|
writereg(&ll->rdp, LE_C0_INEA); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
static int lance_open(struct net_device *dev) |
|
{ |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int status = 0; |
|
|
|
/* Stop the Lance */ |
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
|
|
/* Set mode and clear multicast filter only at device open, |
|
* so that lance_init_ring() called at any error will not |
|
* forget multicast filters. |
|
* |
|
* BTW it is common bug in all lance drivers! --ANK |
|
*/ |
|
*lib_ptr(ib, mode, lp->type) = 0; |
|
*lib_ptr(ib, filter[0], lp->type) = 0; |
|
*lib_ptr(ib, filter[1], lp->type) = 0; |
|
*lib_ptr(ib, filter[2], lp->type) = 0; |
|
*lib_ptr(ib, filter[3], lp->type) = 0; |
|
|
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
|
|
netif_start_queue(dev); |
|
|
|
/* Associate IRQ with lance_interrupt */ |
|
if (request_irq(dev->irq, lance_interrupt, 0, "lance", dev)) { |
|
printk("%s: Can't get IRQ %d\n", dev->name, dev->irq); |
|
return -EAGAIN; |
|
} |
|
if (lp->dma_irq >= 0) { |
|
unsigned long flags; |
|
|
|
if (request_irq(lp->dma_irq, lance_dma_merr_int, IRQF_ONESHOT, |
|
"lance error", dev)) { |
|
free_irq(dev->irq, dev); |
|
printk("%s: Can't get DMA IRQ %d\n", dev->name, |
|
lp->dma_irq); |
|
return -EAGAIN; |
|
} |
|
|
|
spin_lock_irqsave(&ioasic_ssr_lock, flags); |
|
|
|
fast_mb(); |
|
/* Enable I/O ASIC LANCE DMA. */ |
|
ioasic_write(IO_REG_SSR, |
|
ioasic_read(IO_REG_SSR) | IO_SSR_LANCE_DMA_EN); |
|
|
|
fast_mb(); |
|
spin_unlock_irqrestore(&ioasic_ssr_lock, flags); |
|
} |
|
|
|
status = init_restart_lance(lp); |
|
return status; |
|
} |
|
|
|
static int lance_close(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
netif_stop_queue(dev); |
|
del_timer_sync(&lp->multicast_timer); |
|
|
|
/* Stop the card */ |
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
|
|
if (lp->dma_irq >= 0) { |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&ioasic_ssr_lock, flags); |
|
|
|
fast_mb(); |
|
/* Disable I/O ASIC LANCE DMA. */ |
|
ioasic_write(IO_REG_SSR, |
|
ioasic_read(IO_REG_SSR) & ~IO_SSR_LANCE_DMA_EN); |
|
|
|
fast_iob(); |
|
spin_unlock_irqrestore(&ioasic_ssr_lock, flags); |
|
|
|
free_irq(lp->dma_irq, dev); |
|
} |
|
free_irq(dev->irq, dev); |
|
return 0; |
|
} |
|
|
|
static inline int lance_reset(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int status; |
|
|
|
/* Stop the lance */ |
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
|
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
netif_trans_update(dev); /* prevent tx timeout */ |
|
status = init_restart_lance(lp); |
|
return status; |
|
} |
|
|
|
static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", |
|
dev->name, ll->rdp); |
|
lance_reset(dev); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
static netdev_tx_t lance_start_xmit(struct sk_buff *skb, struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
unsigned long flags; |
|
int entry, len; |
|
|
|
len = skb->len; |
|
|
|
if (len < ETH_ZLEN) { |
|
if (skb_padto(skb, ETH_ZLEN)) |
|
return NETDEV_TX_OK; |
|
len = ETH_ZLEN; |
|
} |
|
|
|
dev->stats.tx_bytes += len; |
|
|
|
spin_lock_irqsave(&lp->lock, flags); |
|
|
|
entry = lp->tx_new; |
|
*lib_ptr(ib, btx_ring[entry].length, lp->type) = (-len); |
|
*lib_ptr(ib, btx_ring[entry].misc, lp->type) = 0; |
|
|
|
cp_to_buf(lp->type, lp->tx_buf_ptr_cpu[entry], skb->data, len); |
|
|
|
/* Now, give the packet to the lance */ |
|
*lib_ptr(ib, btx_ring[entry].tmd1, lp->type) = |
|
((lp->tx_buf_ptr_lnc[entry] >> 16) & 0xff) | |
|
(LE_T1_POK | LE_T1_OWN); |
|
lp->tx_new = (entry + 1) & TX_RING_MOD_MASK; |
|
|
|
if (TX_BUFFS_AVAIL <= 0) |
|
netif_stop_queue(dev); |
|
|
|
/* Kick the lance: transmit now */ |
|
writereg(&ll->rdp, LE_C0_INEA | LE_C0_TDMD); |
|
|
|
spin_unlock_irqrestore(&lp->lock, flags); |
|
|
|
dev_kfree_skb(skb); |
|
|
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static void lance_load_multicast(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
struct netdev_hw_addr *ha; |
|
u32 crc; |
|
|
|
/* set all multicast bits */ |
|
if (dev->flags & IFF_ALLMULTI) { |
|
*lib_ptr(ib, filter[0], lp->type) = 0xffff; |
|
*lib_ptr(ib, filter[1], lp->type) = 0xffff; |
|
*lib_ptr(ib, filter[2], lp->type) = 0xffff; |
|
*lib_ptr(ib, filter[3], lp->type) = 0xffff; |
|
return; |
|
} |
|
/* clear the multicast filter */ |
|
*lib_ptr(ib, filter[0], lp->type) = 0; |
|
*lib_ptr(ib, filter[1], lp->type) = 0; |
|
*lib_ptr(ib, filter[2], lp->type) = 0; |
|
*lib_ptr(ib, filter[3], lp->type) = 0; |
|
|
|
/* Add addresses */ |
|
netdev_for_each_mc_addr(ha, dev) { |
|
crc = ether_crc_le(ETH_ALEN, ha->addr); |
|
crc = crc >> 26; |
|
*lib_ptr(ib, filter[crc >> 4], lp->type) |= 1 << (crc & 0xf); |
|
} |
|
} |
|
|
|
static void lance_set_multicast(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile u16 *ib = (volatile u16 *)dev->mem_start; |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
if (!netif_running(dev)) |
|
return; |
|
|
|
if (lp->tx_old != lp->tx_new) { |
|
mod_timer(&lp->multicast_timer, jiffies + 4 * HZ/100); |
|
netif_wake_queue(dev); |
|
return; |
|
} |
|
|
|
netif_stop_queue(dev); |
|
|
|
writereg(&ll->rap, LE_CSR0); |
|
writereg(&ll->rdp, LE_C0_STOP); |
|
|
|
lance_init_ring(dev); |
|
|
|
if (dev->flags & IFF_PROMISC) { |
|
*lib_ptr(ib, mode, lp->type) |= LE_MO_PROM; |
|
} else { |
|
*lib_ptr(ib, mode, lp->type) &= ~LE_MO_PROM; |
|
lance_load_multicast(dev); |
|
} |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
static void lance_set_multicast_retry(struct timer_list *t) |
|
{ |
|
struct lance_private *lp = from_timer(lp, t, multicast_timer); |
|
struct net_device *dev = lp->dev; |
|
|
|
lance_set_multicast(dev); |
|
} |
|
|
|
static const struct net_device_ops lance_netdev_ops = { |
|
.ndo_open = lance_open, |
|
.ndo_stop = lance_close, |
|
.ndo_start_xmit = lance_start_xmit, |
|
.ndo_tx_timeout = lance_tx_timeout, |
|
.ndo_set_rx_mode = lance_set_multicast, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
}; |
|
|
|
static int dec_lance_probe(struct device *bdev, const int type) |
|
{ |
|
static unsigned version_printed; |
|
static const char fmt[] = "declance%d"; |
|
char name[10]; |
|
struct net_device *dev; |
|
struct lance_private *lp; |
|
volatile struct lance_regs *ll; |
|
resource_size_t start = 0, len = 0; |
|
int i, ret; |
|
unsigned long esar_base; |
|
unsigned char *esar; |
|
const char *desc; |
|
|
|
if (dec_lance_debug && version_printed++ == 0) |
|
printk(version); |
|
|
|
if (bdev) |
|
snprintf(name, sizeof(name), "%s", dev_name(bdev)); |
|
else { |
|
i = 0; |
|
dev = root_lance_dev; |
|
while (dev) { |
|
i++; |
|
lp = netdev_priv(dev); |
|
dev = lp->next; |
|
} |
|
snprintf(name, sizeof(name), fmt, i); |
|
} |
|
|
|
dev = alloc_etherdev(sizeof(struct lance_private)); |
|
if (!dev) { |
|
ret = -ENOMEM; |
|
goto err_out; |
|
} |
|
|
|
/* |
|
* alloc_etherdev ensures the data structures used by the LANCE |
|
* are aligned. |
|
*/ |
|
lp = netdev_priv(dev); |
|
spin_lock_init(&lp->lock); |
|
|
|
lp->type = type; |
|
switch (type) { |
|
case ASIC_LANCE: |
|
dev->base_addr = CKSEG1ADDR(dec_kn_slot_base + IOASIC_LANCE); |
|
|
|
/* buffer space for the on-board LANCE shared memory */ |
|
/* |
|
* FIXME: ugly hack! |
|
*/ |
|
dev->mem_start = CKSEG1ADDR(0x00020000); |
|
dev->mem_end = dev->mem_start + 0x00020000; |
|
dev->irq = dec_interrupt[DEC_IRQ_LANCE]; |
|
esar_base = CKSEG1ADDR(dec_kn_slot_base + IOASIC_ESAR); |
|
|
|
/* Workaround crash with booting KN04 2.1k from Disk */ |
|
memset((void *)dev->mem_start, 0, |
|
dev->mem_end - dev->mem_start); |
|
|
|
/* |
|
* setup the pointer arrays, this sucks [tm] :-( |
|
*/ |
|
for (i = 0; i < RX_RING_SIZE; i++) { |
|
lp->rx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
|
2 * i * RX_BUFF_SIZE); |
|
lp->rx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
|
} |
|
for (i = 0; i < TX_RING_SIZE; i++) { |
|
lp->tx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
|
2 * RX_RING_SIZE * RX_BUFF_SIZE + |
|
2 * i * TX_BUFF_SIZE); |
|
lp->tx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + |
|
RX_RING_SIZE * RX_BUFF_SIZE + |
|
i * TX_BUFF_SIZE); |
|
} |
|
|
|
/* Setup I/O ASIC LANCE DMA. */ |
|
lp->dma_irq = dec_interrupt[DEC_IRQ_LANCE_MERR]; |
|
ioasic_write(IO_REG_LANCE_DMA_P, |
|
CPHYSADDR(dev->mem_start) << 3); |
|
|
|
break; |
|
#ifdef CONFIG_TC |
|
case PMAD_LANCE: |
|
dev_set_drvdata(bdev, dev); |
|
|
|
start = to_tc_dev(bdev)->resource.start; |
|
len = to_tc_dev(bdev)->resource.end - start + 1; |
|
if (!request_mem_region(start, len, dev_name(bdev))) { |
|
printk(KERN_ERR |
|
"%s: Unable to reserve MMIO resource\n", |
|
dev_name(bdev)); |
|
ret = -EBUSY; |
|
goto err_out_dev; |
|
} |
|
|
|
dev->mem_start = CKSEG1ADDR(start); |
|
dev->mem_end = dev->mem_start + 0x100000; |
|
dev->base_addr = dev->mem_start + 0x100000; |
|
dev->irq = to_tc_dev(bdev)->interrupt; |
|
esar_base = dev->mem_start + 0x1c0002; |
|
lp->dma_irq = -1; |
|
|
|
for (i = 0; i < RX_RING_SIZE; i++) { |
|
lp->rx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + BUF_OFFSET_CPU + |
|
i * RX_BUFF_SIZE); |
|
lp->rx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
|
} |
|
for (i = 0; i < TX_RING_SIZE; i++) { |
|
lp->tx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + BUF_OFFSET_CPU + |
|
RX_RING_SIZE * RX_BUFF_SIZE + |
|
i * TX_BUFF_SIZE); |
|
lp->tx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + |
|
RX_RING_SIZE * RX_BUFF_SIZE + |
|
i * TX_BUFF_SIZE); |
|
} |
|
|
|
break; |
|
#endif |
|
case PMAX_LANCE: |
|
dev->irq = dec_interrupt[DEC_IRQ_LANCE]; |
|
dev->base_addr = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE); |
|
dev->mem_start = CKSEG1ADDR(KN01_SLOT_BASE + KN01_LANCE_MEM); |
|
dev->mem_end = dev->mem_start + KN01_SLOT_SIZE; |
|
esar_base = CKSEG1ADDR(KN01_SLOT_BASE + KN01_ESAR + 1); |
|
lp->dma_irq = -1; |
|
|
|
/* |
|
* setup the pointer arrays, this sucks [tm] :-( |
|
*/ |
|
for (i = 0; i < RX_RING_SIZE; i++) { |
|
lp->rx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
|
2 * i * RX_BUFF_SIZE); |
|
lp->rx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + i * RX_BUFF_SIZE); |
|
} |
|
for (i = 0; i < TX_RING_SIZE; i++) { |
|
lp->tx_buf_ptr_cpu[i] = |
|
(char *)(dev->mem_start + 2 * BUF_OFFSET_CPU + |
|
2 * RX_RING_SIZE * RX_BUFF_SIZE + |
|
2 * i * TX_BUFF_SIZE); |
|
lp->tx_buf_ptr_lnc[i] = |
|
(BUF_OFFSET_LNC + |
|
RX_RING_SIZE * RX_BUFF_SIZE + |
|
i * TX_BUFF_SIZE); |
|
} |
|
|
|
break; |
|
|
|
default: |
|
printk(KERN_ERR "%s: declance_init called with unknown type\n", |
|
name); |
|
ret = -ENODEV; |
|
goto err_out_dev; |
|
} |
|
|
|
ll = (struct lance_regs *) dev->base_addr; |
|
esar = (unsigned char *) esar_base; |
|
|
|
/* prom checks */ |
|
/* First, check for test pattern */ |
|
if (esar[0x60] != 0xff && esar[0x64] != 0x00 && |
|
esar[0x68] != 0x55 && esar[0x6c] != 0xaa) { |
|
printk(KERN_ERR |
|
"%s: Ethernet station address prom not found!\n", |
|
name); |
|
ret = -ENODEV; |
|
goto err_out_resource; |
|
} |
|
/* Check the prom contents */ |
|
for (i = 0; i < 8; i++) { |
|
if (esar[i * 4] != esar[0x3c - i * 4] && |
|
esar[i * 4] != esar[0x40 + i * 4] && |
|
esar[0x3c - i * 4] != esar[0x40 + i * 4]) { |
|
printk(KERN_ERR "%s: Something is wrong with the " |
|
"ethernet station address prom!\n", name); |
|
ret = -ENODEV; |
|
goto err_out_resource; |
|
} |
|
} |
|
|
|
/* Copy the ethernet address to the device structure, later to the |
|
* lance initialization block so the lance gets it every time it's |
|
* (re)initialized. |
|
*/ |
|
switch (type) { |
|
case ASIC_LANCE: |
|
desc = "IOASIC onboard LANCE"; |
|
break; |
|
case PMAD_LANCE: |
|
desc = "PMAD-AA"; |
|
break; |
|
case PMAX_LANCE: |
|
desc = "PMAX onboard LANCE"; |
|
break; |
|
} |
|
for (i = 0; i < 6; i++) |
|
dev->dev_addr[i] = esar[i * 4]; |
|
|
|
printk("%s: %s, addr = %pM, irq = %d\n", |
|
name, desc, dev->dev_addr, dev->irq); |
|
|
|
dev->netdev_ops = &lance_netdev_ops; |
|
dev->watchdog_timeo = 5*HZ; |
|
|
|
/* lp->ll is the location of the registers for lance card */ |
|
lp->ll = ll; |
|
|
|
/* busmaster_regval (CSR3) should be zero according to the PMAD-AA |
|
* specification. |
|
*/ |
|
lp->busmaster_regval = 0; |
|
|
|
dev->dma = 0; |
|
|
|
/* We cannot sleep if the chip is busy during a |
|
* multicast list update event, because such events |
|
* can occur from interrupts (ex. IPv6). So we |
|
* use a timer to try again later when necessary. -DaveM |
|
*/ |
|
lp->dev = dev; |
|
timer_setup(&lp->multicast_timer, lance_set_multicast_retry, 0); |
|
|
|
|
|
ret = register_netdev(dev); |
|
if (ret) { |
|
printk(KERN_ERR |
|
"%s: Unable to register netdev, aborting.\n", name); |
|
goto err_out_resource; |
|
} |
|
|
|
if (!bdev) { |
|
lp->next = root_lance_dev; |
|
root_lance_dev = dev; |
|
} |
|
|
|
printk("%s: registered as %s.\n", name, dev->name); |
|
return 0; |
|
|
|
err_out_resource: |
|
if (bdev) |
|
release_mem_region(start, len); |
|
|
|
err_out_dev: |
|
free_netdev(dev); |
|
|
|
err_out: |
|
return ret; |
|
} |
|
|
|
/* Find all the lance cards on the system and initialize them */ |
|
static int __init dec_lance_platform_probe(void) |
|
{ |
|
int count = 0; |
|
|
|
if (dec_interrupt[DEC_IRQ_LANCE] >= 0) { |
|
if (dec_interrupt[DEC_IRQ_LANCE_MERR] >= 0) { |
|
if (dec_lance_probe(NULL, ASIC_LANCE) >= 0) |
|
count++; |
|
} else if (!TURBOCHANNEL) { |
|
if (dec_lance_probe(NULL, PMAX_LANCE) >= 0) |
|
count++; |
|
} |
|
} |
|
|
|
return (count > 0) ? 0 : -ENODEV; |
|
} |
|
|
|
static void __exit dec_lance_platform_remove(void) |
|
{ |
|
while (root_lance_dev) { |
|
struct net_device *dev = root_lance_dev; |
|
struct lance_private *lp = netdev_priv(dev); |
|
|
|
unregister_netdev(dev); |
|
root_lance_dev = lp->next; |
|
free_netdev(dev); |
|
} |
|
} |
|
|
|
#ifdef CONFIG_TC |
|
static int dec_lance_tc_probe(struct device *dev); |
|
static int dec_lance_tc_remove(struct device *dev); |
|
|
|
static const struct tc_device_id dec_lance_tc_table[] = { |
|
{ "DEC ", "PMAD-AA " }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(tc, dec_lance_tc_table); |
|
|
|
static struct tc_driver dec_lance_tc_driver = { |
|
.id_table = dec_lance_tc_table, |
|
.driver = { |
|
.name = "declance", |
|
.bus = &tc_bus_type, |
|
.probe = dec_lance_tc_probe, |
|
.remove = dec_lance_tc_remove, |
|
}, |
|
}; |
|
|
|
static int dec_lance_tc_probe(struct device *dev) |
|
{ |
|
int status = dec_lance_probe(dev, PMAD_LANCE); |
|
if (!status) |
|
get_device(dev); |
|
return status; |
|
} |
|
|
|
static void dec_lance_remove(struct device *bdev) |
|
{ |
|
struct net_device *dev = dev_get_drvdata(bdev); |
|
resource_size_t start, len; |
|
|
|
unregister_netdev(dev); |
|
start = to_tc_dev(bdev)->resource.start; |
|
len = to_tc_dev(bdev)->resource.end - start + 1; |
|
release_mem_region(start, len); |
|
free_netdev(dev); |
|
} |
|
|
|
static int dec_lance_tc_remove(struct device *dev) |
|
{ |
|
put_device(dev); |
|
dec_lance_remove(dev); |
|
return 0; |
|
} |
|
#endif |
|
|
|
static int __init dec_lance_init(void) |
|
{ |
|
int status; |
|
|
|
status = tc_register_driver(&dec_lance_tc_driver); |
|
if (!status) |
|
dec_lance_platform_probe(); |
|
return status; |
|
} |
|
|
|
static void __exit dec_lance_exit(void) |
|
{ |
|
dec_lance_platform_remove(); |
|
tc_unregister_driver(&dec_lance_tc_driver); |
|
} |
|
|
|
|
|
module_init(dec_lance_init); |
|
module_exit(dec_lance_exit);
|
|
|