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1249 lines
30 KiB
1249 lines
30 KiB
/* |
|
* ni6510 (am7990 'lance' chip) driver for Linux-net-3 |
|
* BETAcode v0.71 (96/09/29) for 2.0.0 (or later) |
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* copyrights (c) 1994,1995,1996 by M.Hipp |
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* |
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* This driver can handle the old ni6510 board and the newer ni6510 |
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* EtherBlaster. (probably it also works with every full NE2100 |
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* compatible card) |
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* |
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* driver probes: io: 0x360,0x300,0x320,0x340 / dma: 3,5,6,7 |
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* |
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* This is an extension to the Linux operating system, and is covered by the |
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* same GNU General Public License that covers the Linux-kernel. |
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* |
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* comments/bugs/suggestions can be sent to: |
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* Michael Hipp |
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* email: [email protected] |
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* |
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* sources: |
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* some things are from the 'ni6510-packet-driver for dos by Russ Nelson' |
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* and from the original drivers by D.Becker |
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* |
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* known problems: |
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* - on some PCI boards (including my own) the card/board/ISA-bridge has |
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* problems with bus master DMA. This results in lotsa overruns. |
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* It may help to '#define RCV_PARANOIA_CHECK' or try to #undef |
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* the XMT and RCV_VIA_SKB option .. this reduces driver performance. |
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* Or just play with your BIOS options to optimize ISA-DMA access. |
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* Maybe you also wanna play with the LOW_PERFORAMCE and MID_PERFORMANCE |
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* defines -> please report me your experience then |
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* - Harald reported for ASUS SP3G mainboards, that you should use |
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* the 'optimal settings' from the user's manual on page 3-12! |
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* |
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* credits: |
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* thanx to Jason Sullivan for sending me a ni6510 card! |
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* lot of debug runs with ASUS SP3G Boards (Intel Saturn) by Harald Koenig |
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* |
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* simple performance test: (486DX-33/Ni6510-EB receives from 486DX4-100/Ni6510-EB) |
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* average: FTP -> 8384421 bytes received in 8.5 seconds |
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* (no RCV_VIA_SKB,no XMT_VIA_SKB,PARANOIA_CHECK,4 XMIT BUFS, 8 RCV_BUFFS) |
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* peak: FTP -> 8384421 bytes received in 7.5 seconds |
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* (RCV_VIA_SKB,XMT_VIA_SKB,no PARANOIA_CHECK,1(!) XMIT BUF, 16 RCV BUFFS) |
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*/ |
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|
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/* |
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* 99.Jun.8: added support for /proc/net/dev byte count for xosview (HK) |
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* 96.Sept.29: virt_to_bus stuff added for new memory modell |
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* 96.April.29: Added Harald Koenig's Patches (MH) |
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* 96.April.13: enhanced error handling .. more tests (MH) |
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* 96.April.5/6: a lot of performance tests. Got it stable now (hopefully) (MH) |
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* 96.April.1: (no joke ;) .. added EtherBlaster and Module support (MH) |
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* 96.Feb.19: fixed a few bugs .. cleanups .. tested for 1.3.66 (MH) |
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* hopefully no more 16MB limit |
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* |
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* 95.Nov.18: multicast tweaked (AC). |
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* |
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* 94.Aug.22: changes in xmit_intr (ack more than one xmitted-packet), ni65_send_packet (p->lock) (MH) |
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* |
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* 94.July.16: fixed bugs in recv_skb and skb-alloc stuff (MH) |
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*/ |
|
|
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#include <linux/kernel.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/ioport.h> |
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#include <linux/slab.h> |
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#include <linux/interrupt.h> |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/module.h> |
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#include <linux/bitops.h> |
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|
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#include <asm/io.h> |
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#include <asm/dma.h> |
|
|
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#include "ni65.h" |
|
|
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/* |
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* the current setting allows an acceptable performance |
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* for 'RCV_PARANOIA_CHECK' read the 'known problems' part in |
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* the header of this file |
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* 'invert' the defines for max. performance. This may cause DMA problems |
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* on some boards (e.g on my ASUS SP3G) |
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*/ |
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#undef XMT_VIA_SKB |
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#undef RCV_VIA_SKB |
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#define RCV_PARANOIA_CHECK |
|
|
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#define MID_PERFORMANCE |
|
|
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#if defined( LOW_PERFORMANCE ) |
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static int isa0=7,isa1=7,csr80=0x0c10; |
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#elif defined( MID_PERFORMANCE ) |
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static int isa0=5,isa1=5,csr80=0x2810; |
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#else /* high performance */ |
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static int isa0=4,isa1=4,csr80=0x0017; |
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#endif |
|
|
|
/* |
|
* a few card/vendor specific defines |
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*/ |
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#define NI65_ID0 0x00 |
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#define NI65_ID1 0x55 |
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#define NI65_EB_ID0 0x52 |
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#define NI65_EB_ID1 0x44 |
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#define NE2100_ID0 0x57 |
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#define NE2100_ID1 0x57 |
|
|
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#define PORT p->cmdr_addr |
|
|
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/* |
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* buffer configuration |
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*/ |
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#if 1 |
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#define RMDNUM 16 |
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#define RMDNUMMASK 0x80000000 |
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#else |
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#define RMDNUM 8 |
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#define RMDNUMMASK 0x60000000 /* log2(RMDNUM)<<29 */ |
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#endif |
|
|
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#if 0 |
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#define TMDNUM 1 |
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#define TMDNUMMASK 0x00000000 |
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#else |
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#define TMDNUM 4 |
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#define TMDNUMMASK 0x40000000 /* log2(TMDNUM)<<29 */ |
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#endif |
|
|
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/* slightly oversized */ |
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#define R_BUF_SIZE 1544 |
|
#define T_BUF_SIZE 1544 |
|
|
|
/* |
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* lance register defines |
|
*/ |
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#define L_DATAREG 0x00 |
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#define L_ADDRREG 0x02 |
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#define L_RESET 0x04 |
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#define L_CONFIG 0x05 |
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#define L_BUSIF 0x06 |
|
|
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/* |
|
* to access the lance/am7990-regs, you have to write |
|
* reg-number into L_ADDRREG, then you can access it using L_DATAREG |
|
*/ |
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#define CSR0 0x00 |
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#define CSR1 0x01 |
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#define CSR2 0x02 |
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#define CSR3 0x03 |
|
|
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#define INIT_RING_BEFORE_START 0x1 |
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#define FULL_RESET_ON_ERROR 0x2 |
|
|
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#if 0 |
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#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);inw(PORT+L_ADDRREG); \ |
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outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} |
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#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_ADDRREG),\ |
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inw(PORT+L_DATAREG)) |
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#if 0 |
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#define writedatareg(val) {outw(val,PORT+L_DATAREG);inw(PORT+L_DATAREG);} |
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#else |
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#define writedatareg(val) { writereg(val,CSR0); } |
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#endif |
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#else |
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#define writereg(val,reg) {outw(reg,PORT+L_ADDRREG);outw(val,PORT+L_DATAREG);} |
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#define readreg(reg) (outw(reg,PORT+L_ADDRREG),inw(PORT+L_DATAREG)) |
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#define writedatareg(val) { writereg(val,CSR0); } |
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#endif |
|
|
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static unsigned char ni_vendor[] = { 0x02,0x07,0x01 }; |
|
|
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static struct card { |
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unsigned char id0,id1; |
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short id_offset; |
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short total_size; |
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short cmd_offset; |
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short addr_offset; |
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unsigned char *vendor_id; |
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char *cardname; |
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unsigned long config; |
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} cards[] = { |
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{ |
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.id0 = NI65_ID0, |
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.id1 = NI65_ID1, |
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.id_offset = 0x0e, |
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.total_size = 0x10, |
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.cmd_offset = 0x0, |
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.addr_offset = 0x8, |
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.vendor_id = ni_vendor, |
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.cardname = "ni6510", |
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.config = 0x1, |
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}, |
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{ |
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.id0 = NI65_EB_ID0, |
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.id1 = NI65_EB_ID1, |
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.id_offset = 0x0e, |
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.total_size = 0x18, |
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.cmd_offset = 0x10, |
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.addr_offset = 0x0, |
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.vendor_id = ni_vendor, |
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.cardname = "ni6510 EtherBlaster", |
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.config = 0x2, |
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}, |
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{ |
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.id0 = NE2100_ID0, |
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.id1 = NE2100_ID1, |
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.id_offset = 0x0e, |
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.total_size = 0x18, |
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.cmd_offset = 0x10, |
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.addr_offset = 0x0, |
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.vendor_id = NULL, |
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.cardname = "generic NE2100", |
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.config = 0x0, |
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}, |
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}; |
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#define NUM_CARDS 3 |
|
|
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struct priv |
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{ |
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struct rmd rmdhead[RMDNUM]; |
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struct tmd tmdhead[TMDNUM]; |
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struct init_block ib; |
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int rmdnum; |
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int tmdnum,tmdlast; |
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#ifdef RCV_VIA_SKB |
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struct sk_buff *recv_skb[RMDNUM]; |
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#else |
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void *recvbounce[RMDNUM]; |
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#endif |
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#ifdef XMT_VIA_SKB |
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struct sk_buff *tmd_skb[TMDNUM]; |
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#endif |
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void *tmdbounce[TMDNUM]; |
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int tmdbouncenum; |
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int lock,xmit_queued; |
|
|
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void *self; |
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int cmdr_addr; |
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int cardno; |
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int features; |
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spinlock_t ring_lock; |
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}; |
|
|
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static int ni65_probe1(struct net_device *dev,int); |
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static irqreturn_t ni65_interrupt(int irq, void * dev_id); |
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static void ni65_recv_intr(struct net_device *dev,int); |
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static void ni65_xmit_intr(struct net_device *dev,int); |
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static int ni65_open(struct net_device *dev); |
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static int ni65_lance_reinit(struct net_device *dev); |
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static void ni65_init_lance(struct priv *p,unsigned char*,int,int); |
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static netdev_tx_t ni65_send_packet(struct sk_buff *skb, |
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struct net_device *dev); |
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static void ni65_timeout(struct net_device *dev, unsigned int txqueue); |
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static int ni65_close(struct net_device *dev); |
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static int ni65_alloc_buffer(struct net_device *dev); |
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static void ni65_free_buffer(struct priv *p); |
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static void set_multicast_list(struct net_device *dev); |
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|
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static int irqtab[] __initdata = { 9,12,15,5 }; /* irq config-translate */ |
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static int dmatab[] __initdata = { 0,3,5,6,7 }; /* dma config-translate and autodetect */ |
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|
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static int debuglevel = 1; |
|
|
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/* |
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* set 'performance' registers .. we must STOP lance for that |
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*/ |
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static void ni65_set_performance(struct priv *p) |
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{ |
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writereg(CSR0_STOP | CSR0_CLRALL,CSR0); /* STOP */ |
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|
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if( !(cards[p->cardno].config & 0x02) ) |
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return; |
|
|
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outw(80,PORT+L_ADDRREG); |
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if(inw(PORT+L_ADDRREG) != 80) |
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return; |
|
|
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writereg( (csr80 & 0x3fff) ,80); /* FIFO watermarks */ |
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outw(0,PORT+L_ADDRREG); |
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outw((short)isa0,PORT+L_BUSIF); /* write ISA 0: DMA_R : isa0 * 50ns */ |
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outw(1,PORT+L_ADDRREG); |
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outw((short)isa1,PORT+L_BUSIF); /* write ISA 1: DMA_W : isa1 * 50ns */ |
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|
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outw(CSR0,PORT+L_ADDRREG); /* switch back to CSR0 */ |
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} |
|
|
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/* |
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* open interface (up) |
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*/ |
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static int ni65_open(struct net_device *dev) |
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{ |
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struct priv *p = dev->ml_priv; |
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int irqval = request_irq(dev->irq, ni65_interrupt,0, |
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cards[p->cardno].cardname,dev); |
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if (irqval) { |
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printk(KERN_ERR "%s: unable to get IRQ %d (irqval=%d).\n", |
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dev->name,dev->irq, irqval); |
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return -EAGAIN; |
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} |
|
|
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if(ni65_lance_reinit(dev)) |
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{ |
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netif_start_queue(dev); |
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return 0; |
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} |
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else |
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{ |
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free_irq(dev->irq,dev); |
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return -EAGAIN; |
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} |
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} |
|
|
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/* |
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* close interface (down) |
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*/ |
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static int ni65_close(struct net_device *dev) |
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{ |
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struct priv *p = dev->ml_priv; |
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|
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netif_stop_queue(dev); |
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|
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outw(inw(PORT+L_RESET),PORT+L_RESET); /* that's the hard way */ |
|
|
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#ifdef XMT_VIA_SKB |
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{ |
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int i; |
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for(i=0;i<TMDNUM;i++) |
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{ |
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if(p->tmd_skb[i]) { |
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dev_kfree_skb(p->tmd_skb[i]); |
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p->tmd_skb[i] = NULL; |
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} |
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} |
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} |
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#endif |
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free_irq(dev->irq,dev); |
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return 0; |
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} |
|
|
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static void cleanup_card(struct net_device *dev) |
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{ |
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struct priv *p = dev->ml_priv; |
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disable_dma(dev->dma); |
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free_dma(dev->dma); |
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release_region(dev->base_addr, cards[p->cardno].total_size); |
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ni65_free_buffer(p); |
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} |
|
|
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/* set: io,irq,dma or set it when calling insmod */ |
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static int irq; |
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static int io; |
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static int dma; |
|
|
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/* |
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* Probe The Card (not the lance-chip) |
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*/ |
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struct net_device * __init ni65_probe(int unit) |
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{ |
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struct net_device *dev = alloc_etherdev(0); |
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static const int ports[] = { 0x360, 0x300, 0x320, 0x340, 0 }; |
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const int *port; |
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int err = 0; |
|
|
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if (!dev) |
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return ERR_PTR(-ENOMEM); |
|
|
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if (unit >= 0) { |
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sprintf(dev->name, "eth%d", unit); |
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netdev_boot_setup_check(dev); |
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irq = dev->irq; |
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dma = dev->dma; |
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} else { |
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dev->base_addr = io; |
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} |
|
|
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if (dev->base_addr > 0x1ff) { /* Check a single specified location. */ |
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err = ni65_probe1(dev, dev->base_addr); |
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} else if (dev->base_addr > 0) { /* Don't probe at all. */ |
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err = -ENXIO; |
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} else { |
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for (port = ports; *port && ni65_probe1(dev, *port); port++) |
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; |
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if (!*port) |
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err = -ENODEV; |
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} |
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if (err) |
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goto out; |
|
|
|
err = register_netdev(dev); |
|
if (err) |
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goto out1; |
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return dev; |
|
out1: |
|
cleanup_card(dev); |
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out: |
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free_netdev(dev); |
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return ERR_PTR(err); |
|
} |
|
|
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static const struct net_device_ops ni65_netdev_ops = { |
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.ndo_open = ni65_open, |
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.ndo_stop = ni65_close, |
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.ndo_start_xmit = ni65_send_packet, |
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.ndo_tx_timeout = ni65_timeout, |
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.ndo_set_rx_mode = set_multicast_list, |
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.ndo_set_mac_address = eth_mac_addr, |
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.ndo_validate_addr = eth_validate_addr, |
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}; |
|
|
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/* |
|
* this is the real card probe .. |
|
*/ |
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static int __init ni65_probe1(struct net_device *dev,int ioaddr) |
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{ |
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int i,j; |
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struct priv *p; |
|
unsigned long flags; |
|
|
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dev->irq = irq; |
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dev->dma = dma; |
|
|
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for(i=0;i<NUM_CARDS;i++) { |
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if(!request_region(ioaddr, cards[i].total_size, cards[i].cardname)) |
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continue; |
|
if(cards[i].id_offset >= 0) { |
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if(inb(ioaddr+cards[i].id_offset+0) != cards[i].id0 || |
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inb(ioaddr+cards[i].id_offset+1) != cards[i].id1) { |
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release_region(ioaddr, cards[i].total_size); |
|
continue; |
|
} |
|
} |
|
if(cards[i].vendor_id) { |
|
for(j=0;j<3;j++) |
|
if(inb(ioaddr+cards[i].addr_offset+j) != cards[i].vendor_id[j]) |
|
release_region(ioaddr, cards[i].total_size); |
|
} |
|
break; |
|
} |
|
if(i == NUM_CARDS) |
|
return -ENODEV; |
|
|
|
for(j=0;j<6;j++) |
|
dev->dev_addr[j] = inb(ioaddr+cards[i].addr_offset+j); |
|
|
|
if( (j=ni65_alloc_buffer(dev)) < 0) { |
|
release_region(ioaddr, cards[i].total_size); |
|
return j; |
|
} |
|
p = dev->ml_priv; |
|
p->cmdr_addr = ioaddr + cards[i].cmd_offset; |
|
p->cardno = i; |
|
spin_lock_init(&p->ring_lock); |
|
|
|
printk(KERN_INFO "%s: %s found at %#3x, ", dev->name, cards[p->cardno].cardname , ioaddr); |
|
|
|
outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ |
|
if( (j=readreg(CSR0)) != 0x4) { |
|
printk("failed.\n"); |
|
printk(KERN_ERR "%s: Can't RESET card: %04x\n", dev->name, j); |
|
ni65_free_buffer(p); |
|
release_region(ioaddr, cards[p->cardno].total_size); |
|
return -EAGAIN; |
|
} |
|
|
|
outw(88,PORT+L_ADDRREG); |
|
if(inw(PORT+L_ADDRREG) == 88) { |
|
unsigned long v; |
|
v = inw(PORT+L_DATAREG); |
|
v <<= 16; |
|
outw(89,PORT+L_ADDRREG); |
|
v |= inw(PORT+L_DATAREG); |
|
printk("Version %#08lx, ",v); |
|
p->features = INIT_RING_BEFORE_START; |
|
} |
|
else { |
|
printk("ancient LANCE, "); |
|
p->features = 0x0; |
|
} |
|
|
|
if(test_bit(0,&cards[i].config)) { |
|
dev->irq = irqtab[(inw(ioaddr+L_CONFIG)>>2)&3]; |
|
dev->dma = dmatab[inw(ioaddr+L_CONFIG)&3]; |
|
printk("IRQ %d (from card), DMA %d (from card).\n",dev->irq,dev->dma); |
|
} |
|
else { |
|
if(dev->dma == 0) { |
|
/* 'stuck test' from lance.c */ |
|
unsigned long dma_channels = |
|
((inb(DMA1_STAT_REG) >> 4) & 0x0f) |
|
| (inb(DMA2_STAT_REG) & 0xf0); |
|
for(i=1;i<5;i++) { |
|
int dma = dmatab[i]; |
|
if(test_bit(dma,&dma_channels) || request_dma(dma,"ni6510")) |
|
continue; |
|
|
|
flags=claim_dma_lock(); |
|
disable_dma(dma); |
|
set_dma_mode(dma,DMA_MODE_CASCADE); |
|
enable_dma(dma); |
|
release_dma_lock(flags); |
|
|
|
ni65_init_lance(p,dev->dev_addr,0,0); /* trigger memory access */ |
|
|
|
flags=claim_dma_lock(); |
|
disable_dma(dma); |
|
free_dma(dma); |
|
release_dma_lock(flags); |
|
|
|
if(readreg(CSR0) & CSR0_IDON) |
|
break; |
|
} |
|
if(i == 5) { |
|
printk("failed.\n"); |
|
printk(KERN_ERR "%s: Can't detect DMA channel!\n", dev->name); |
|
ni65_free_buffer(p); |
|
release_region(ioaddr, cards[p->cardno].total_size); |
|
return -EAGAIN; |
|
} |
|
dev->dma = dmatab[i]; |
|
printk("DMA %d (autodetected), ",dev->dma); |
|
} |
|
else |
|
printk("DMA %d (assigned), ",dev->dma); |
|
|
|
if(dev->irq < 2) |
|
{ |
|
unsigned long irq_mask; |
|
|
|
ni65_init_lance(p,dev->dev_addr,0,0); |
|
irq_mask = probe_irq_on(); |
|
writereg(CSR0_INIT|CSR0_INEA,CSR0); /* trigger interrupt */ |
|
msleep(20); |
|
dev->irq = probe_irq_off(irq_mask); |
|
if(!dev->irq) |
|
{ |
|
printk("Failed to detect IRQ line!\n"); |
|
ni65_free_buffer(p); |
|
release_region(ioaddr, cards[p->cardno].total_size); |
|
return -EAGAIN; |
|
} |
|
printk("IRQ %d (autodetected).\n",dev->irq); |
|
} |
|
else |
|
printk("IRQ %d (assigned).\n",dev->irq); |
|
} |
|
|
|
if(request_dma(dev->dma, cards[p->cardno].cardname ) != 0) |
|
{ |
|
printk(KERN_ERR "%s: Can't request dma-channel %d\n",dev->name,(int) dev->dma); |
|
ni65_free_buffer(p); |
|
release_region(ioaddr, cards[p->cardno].total_size); |
|
return -EAGAIN; |
|
} |
|
|
|
dev->base_addr = ioaddr; |
|
dev->netdev_ops = &ni65_netdev_ops; |
|
dev->watchdog_timeo = HZ/2; |
|
|
|
return 0; /* everything is OK */ |
|
} |
|
|
|
/* |
|
* set lance register and trigger init |
|
*/ |
|
static void ni65_init_lance(struct priv *p,unsigned char *daddr,int filter,int mode) |
|
{ |
|
int i; |
|
u32 pib; |
|
|
|
writereg(CSR0_CLRALL|CSR0_STOP,CSR0); |
|
|
|
for(i=0;i<6;i++) |
|
p->ib.eaddr[i] = daddr[i]; |
|
|
|
for(i=0;i<8;i++) |
|
p->ib.filter[i] = filter; |
|
p->ib.mode = mode; |
|
|
|
p->ib.trp = (u32) isa_virt_to_bus(p->tmdhead) | TMDNUMMASK; |
|
p->ib.rrp = (u32) isa_virt_to_bus(p->rmdhead) | RMDNUMMASK; |
|
writereg(0,CSR3); /* busmaster/no word-swap */ |
|
pib = (u32) isa_virt_to_bus(&p->ib); |
|
writereg(pib & 0xffff,CSR1); |
|
writereg(pib >> 16,CSR2); |
|
|
|
writereg(CSR0_INIT,CSR0); /* this changes L_ADDRREG to CSR0 */ |
|
|
|
for(i=0;i<32;i++) |
|
{ |
|
mdelay(4); |
|
if(inw(PORT+L_DATAREG) & (CSR0_IDON | CSR0_MERR) ) |
|
break; /* init ok ? */ |
|
} |
|
} |
|
|
|
/* |
|
* allocate memory area and check the 16MB border |
|
*/ |
|
static void *ni65_alloc_mem(struct net_device *dev,char *what,int size,int type) |
|
{ |
|
struct sk_buff *skb=NULL; |
|
unsigned char *ptr; |
|
void *ret; |
|
|
|
if(type) { |
|
ret = skb = alloc_skb(2+16+size,GFP_KERNEL|GFP_DMA); |
|
if(!skb) { |
|
printk(KERN_WARNING "%s: unable to allocate %s memory.\n",dev->name,what); |
|
return NULL; |
|
} |
|
skb_reserve(skb,2+16); |
|
skb_put(skb,R_BUF_SIZE); /* grab the whole space .. (not necessary) */ |
|
ptr = skb->data; |
|
} |
|
else { |
|
ret = ptr = kmalloc(T_BUF_SIZE,GFP_KERNEL | GFP_DMA); |
|
if(!ret) |
|
return NULL; |
|
} |
|
if( (u32) virt_to_phys(ptr+size) > 0x1000000) { |
|
printk(KERN_WARNING "%s: unable to allocate %s memory in lower 16MB!\n",dev->name,what); |
|
if(type) |
|
kfree_skb(skb); |
|
else |
|
kfree(ptr); |
|
return NULL; |
|
} |
|
return ret; |
|
} |
|
|
|
/* |
|
* allocate all memory structures .. send/recv buffers etc ... |
|
*/ |
|
static int ni65_alloc_buffer(struct net_device *dev) |
|
{ |
|
unsigned char *ptr; |
|
struct priv *p; |
|
int i; |
|
|
|
/* |
|
* we need 8-aligned memory .. |
|
*/ |
|
ptr = ni65_alloc_mem(dev,"BUFFER",sizeof(struct priv)+8,0); |
|
if(!ptr) |
|
return -ENOMEM; |
|
|
|
p = dev->ml_priv = (struct priv *) (((unsigned long) ptr + 7) & ~0x7); |
|
memset((char *)p, 0, sizeof(struct priv)); |
|
p->self = ptr; |
|
|
|
for(i=0;i<TMDNUM;i++) |
|
{ |
|
#ifdef XMT_VIA_SKB |
|
p->tmd_skb[i] = NULL; |
|
#endif |
|
p->tmdbounce[i] = ni65_alloc_mem(dev,"XMIT",T_BUF_SIZE,0); |
|
if(!p->tmdbounce[i]) { |
|
ni65_free_buffer(p); |
|
return -ENOMEM; |
|
} |
|
} |
|
|
|
for(i=0;i<RMDNUM;i++) |
|
{ |
|
#ifdef RCV_VIA_SKB |
|
p->recv_skb[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,1); |
|
if(!p->recv_skb[i]) { |
|
ni65_free_buffer(p); |
|
return -ENOMEM; |
|
} |
|
#else |
|
p->recvbounce[i] = ni65_alloc_mem(dev,"RECV",R_BUF_SIZE,0); |
|
if(!p->recvbounce[i]) { |
|
ni65_free_buffer(p); |
|
return -ENOMEM; |
|
} |
|
#endif |
|
} |
|
|
|
return 0; /* everything is OK */ |
|
} |
|
|
|
/* |
|
* free buffers and private struct |
|
*/ |
|
static void ni65_free_buffer(struct priv *p) |
|
{ |
|
int i; |
|
|
|
if(!p) |
|
return; |
|
|
|
for(i=0;i<TMDNUM;i++) { |
|
kfree(p->tmdbounce[i]); |
|
#ifdef XMT_VIA_SKB |
|
dev_kfree_skb(p->tmd_skb[i]); |
|
#endif |
|
} |
|
|
|
for(i=0;i<RMDNUM;i++) |
|
{ |
|
#ifdef RCV_VIA_SKB |
|
dev_kfree_skb(p->recv_skb[i]); |
|
#else |
|
kfree(p->recvbounce[i]); |
|
#endif |
|
} |
|
kfree(p->self); |
|
} |
|
|
|
|
|
/* |
|
* stop and (re)start lance .. e.g after an error |
|
*/ |
|
static void ni65_stop_start(struct net_device *dev,struct priv *p) |
|
{ |
|
int csr0 = CSR0_INEA; |
|
|
|
writedatareg(CSR0_STOP); |
|
|
|
if(debuglevel > 1) |
|
printk(KERN_DEBUG "ni65_stop_start\n"); |
|
|
|
if(p->features & INIT_RING_BEFORE_START) { |
|
int i; |
|
#ifdef XMT_VIA_SKB |
|
struct sk_buff *skb_save[TMDNUM]; |
|
#endif |
|
unsigned long buffer[TMDNUM]; |
|
short blen[TMDNUM]; |
|
|
|
if(p->xmit_queued) { |
|
while(1) { |
|
if((p->tmdhead[p->tmdlast].u.s.status & XMIT_OWN)) |
|
break; |
|
p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); |
|
if(p->tmdlast == p->tmdnum) |
|
break; |
|
} |
|
} |
|
|
|
for(i=0;i<TMDNUM;i++) { |
|
struct tmd *tmdp = p->tmdhead + i; |
|
#ifdef XMT_VIA_SKB |
|
skb_save[i] = p->tmd_skb[i]; |
|
#endif |
|
buffer[i] = (unsigned long)isa_bus_to_virt(tmdp->u.buffer); |
|
blen[i] = tmdp->blen; |
|
tmdp->u.s.status = 0x0; |
|
} |
|
|
|
for(i=0;i<RMDNUM;i++) { |
|
struct rmd *rmdp = p->rmdhead + i; |
|
rmdp->u.s.status = RCV_OWN; |
|
} |
|
p->tmdnum = p->xmit_queued = 0; |
|
writedatareg(CSR0_STRT | csr0); |
|
|
|
for(i=0;i<TMDNUM;i++) { |
|
int num = (i + p->tmdlast) & (TMDNUM-1); |
|
p->tmdhead[i].u.buffer = (u32) isa_virt_to_bus((char *)buffer[num]); /* status is part of buffer field */ |
|
p->tmdhead[i].blen = blen[num]; |
|
if(p->tmdhead[i].u.s.status & XMIT_OWN) { |
|
p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); |
|
p->xmit_queued = 1; |
|
writedatareg(CSR0_TDMD | CSR0_INEA | csr0); |
|
} |
|
#ifdef XMT_VIA_SKB |
|
p->tmd_skb[i] = skb_save[num]; |
|
#endif |
|
} |
|
p->rmdnum = p->tmdlast = 0; |
|
if(!p->lock) |
|
if (p->tmdnum || !p->xmit_queued) |
|
netif_wake_queue(dev); |
|
netif_trans_update(dev); /* prevent tx timeout */ |
|
} |
|
else |
|
writedatareg(CSR0_STRT | csr0); |
|
} |
|
|
|
/* |
|
* init lance (write init-values .. init-buffers) (open-helper) |
|
*/ |
|
static int ni65_lance_reinit(struct net_device *dev) |
|
{ |
|
int i; |
|
struct priv *p = dev->ml_priv; |
|
unsigned long flags; |
|
|
|
p->lock = 0; |
|
p->xmit_queued = 0; |
|
|
|
flags=claim_dma_lock(); |
|
disable_dma(dev->dma); /* I've never worked with dma, but we do it like the packetdriver */ |
|
set_dma_mode(dev->dma,DMA_MODE_CASCADE); |
|
enable_dma(dev->dma); |
|
release_dma_lock(flags); |
|
|
|
outw(inw(PORT+L_RESET),PORT+L_RESET); /* first: reset the card */ |
|
if( (i=readreg(CSR0) ) != 0x4) |
|
{ |
|
printk(KERN_ERR "%s: can't RESET %s card: %04x\n",dev->name, |
|
cards[p->cardno].cardname,(int) i); |
|
flags=claim_dma_lock(); |
|
disable_dma(dev->dma); |
|
release_dma_lock(flags); |
|
return 0; |
|
} |
|
|
|
p->rmdnum = p->tmdnum = p->tmdlast = p->tmdbouncenum = 0; |
|
for(i=0;i<TMDNUM;i++) |
|
{ |
|
struct tmd *tmdp = p->tmdhead + i; |
|
#ifdef XMT_VIA_SKB |
|
if(p->tmd_skb[i]) { |
|
dev_kfree_skb(p->tmd_skb[i]); |
|
p->tmd_skb[i] = NULL; |
|
} |
|
#endif |
|
tmdp->u.buffer = 0x0; |
|
tmdp->u.s.status = XMIT_START | XMIT_END; |
|
tmdp->blen = tmdp->status2 = 0; |
|
} |
|
|
|
for(i=0;i<RMDNUM;i++) |
|
{ |
|
struct rmd *rmdp = p->rmdhead + i; |
|
#ifdef RCV_VIA_SKB |
|
rmdp->u.buffer = (u32) isa_virt_to_bus(p->recv_skb[i]->data); |
|
#else |
|
rmdp->u.buffer = (u32) isa_virt_to_bus(p->recvbounce[i]); |
|
#endif |
|
rmdp->blen = -(R_BUF_SIZE-8); |
|
rmdp->mlen = 0; |
|
rmdp->u.s.status = RCV_OWN; |
|
} |
|
|
|
if(dev->flags & IFF_PROMISC) |
|
ni65_init_lance(p,dev->dev_addr,0x00,M_PROM); |
|
else if (netdev_mc_count(dev) || dev->flags & IFF_ALLMULTI) |
|
ni65_init_lance(p,dev->dev_addr,0xff,0x0); |
|
else |
|
ni65_init_lance(p,dev->dev_addr,0x00,0x00); |
|
|
|
/* |
|
* ni65_set_lance_mem() sets L_ADDRREG to CSR0 |
|
* NOW, WE WILL NEVER CHANGE THE L_ADDRREG, CSR0 IS ALWAYS SELECTED |
|
*/ |
|
|
|
if(inw(PORT+L_DATAREG) & CSR0_IDON) { |
|
ni65_set_performance(p); |
|
/* init OK: start lance , enable interrupts */ |
|
writedatareg(CSR0_CLRALL | CSR0_INEA | CSR0_STRT); |
|
return 1; /* ->OK */ |
|
} |
|
printk(KERN_ERR "%s: can't init lance, status: %04x\n",dev->name,(int) inw(PORT+L_DATAREG)); |
|
flags=claim_dma_lock(); |
|
disable_dma(dev->dma); |
|
release_dma_lock(flags); |
|
return 0; /* ->Error */ |
|
} |
|
|
|
/* |
|
* interrupt handler |
|
*/ |
|
static irqreturn_t ni65_interrupt(int irq, void * dev_id) |
|
{ |
|
int csr0 = 0; |
|
struct net_device *dev = dev_id; |
|
struct priv *p; |
|
int bcnt = 32; |
|
|
|
p = dev->ml_priv; |
|
|
|
spin_lock(&p->ring_lock); |
|
|
|
while(--bcnt) { |
|
csr0 = inw(PORT+L_DATAREG); |
|
|
|
#if 0 |
|
writedatareg( (csr0 & CSR0_CLRALL) ); /* ack interrupts, disable int. */ |
|
#else |
|
writedatareg( (csr0 & CSR0_CLRALL) | CSR0_INEA ); /* ack interrupts, interrupts enabled */ |
|
#endif |
|
|
|
if(!(csr0 & (CSR0_ERR | CSR0_RINT | CSR0_TINT))) |
|
break; |
|
|
|
if(csr0 & CSR0_RINT) /* RECV-int? */ |
|
ni65_recv_intr(dev,csr0); |
|
if(csr0 & CSR0_TINT) /* XMIT-int? */ |
|
ni65_xmit_intr(dev,csr0); |
|
|
|
if(csr0 & CSR0_ERR) |
|
{ |
|
if(debuglevel > 1) |
|
printk(KERN_ERR "%s: general error: %04x.\n",dev->name,csr0); |
|
if(csr0 & CSR0_BABL) |
|
dev->stats.tx_errors++; |
|
if(csr0 & CSR0_MISS) { |
|
int i; |
|
for(i=0;i<RMDNUM;i++) |
|
printk("%02x ",p->rmdhead[i].u.s.status); |
|
printk("\n"); |
|
dev->stats.rx_errors++; |
|
} |
|
if(csr0 & CSR0_MERR) { |
|
if(debuglevel > 1) |
|
printk(KERN_ERR "%s: Ooops .. memory error: %04x.\n",dev->name,csr0); |
|
ni65_stop_start(dev,p); |
|
} |
|
} |
|
} |
|
|
|
#ifdef RCV_PARANOIA_CHECK |
|
{ |
|
int j; |
|
for(j=0;j<RMDNUM;j++) |
|
{ |
|
int i, num2; |
|
for(i=RMDNUM-1;i>0;i--) { |
|
num2 = (p->rmdnum + i) & (RMDNUM-1); |
|
if(!(p->rmdhead[num2].u.s.status & RCV_OWN)) |
|
break; |
|
} |
|
|
|
if(i) { |
|
int k, num1; |
|
for(k=0;k<RMDNUM;k++) { |
|
num1 = (p->rmdnum + k) & (RMDNUM-1); |
|
if(!(p->rmdhead[num1].u.s.status & RCV_OWN)) |
|
break; |
|
} |
|
if(!k) |
|
break; |
|
|
|
if(debuglevel > 0) |
|
{ |
|
char buf[256],*buf1; |
|
buf1 = buf; |
|
for(k=0;k<RMDNUM;k++) { |
|
sprintf(buf1,"%02x ",(p->rmdhead[k].u.s.status)); /* & RCV_OWN) ); */ |
|
buf1 += 3; |
|
} |
|
*buf1 = 0; |
|
printk(KERN_ERR "%s: Ooops, receive ring corrupted %2d %2d | %s\n",dev->name,p->rmdnum,i,buf); |
|
} |
|
|
|
p->rmdnum = num1; |
|
ni65_recv_intr(dev,csr0); |
|
if((p->rmdhead[num2].u.s.status & RCV_OWN)) |
|
break; /* ok, we are 'in sync' again */ |
|
} |
|
else |
|
break; |
|
} |
|
} |
|
#endif |
|
|
|
if( (csr0 & (CSR0_RXON | CSR0_TXON)) != (CSR0_RXON | CSR0_TXON) ) { |
|
printk(KERN_DEBUG "%s: RX or TX was offline -> restart\n",dev->name); |
|
ni65_stop_start(dev,p); |
|
} |
|
else |
|
writedatareg(CSR0_INEA); |
|
|
|
spin_unlock(&p->ring_lock); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
/* |
|
* We have received an Xmit-Interrupt .. |
|
* send a new packet if necessary |
|
*/ |
|
static void ni65_xmit_intr(struct net_device *dev,int csr0) |
|
{ |
|
struct priv *p = dev->ml_priv; |
|
|
|
while(p->xmit_queued) |
|
{ |
|
struct tmd *tmdp = p->tmdhead + p->tmdlast; |
|
int tmdstat = tmdp->u.s.status; |
|
|
|
if(tmdstat & XMIT_OWN) |
|
break; |
|
|
|
if(tmdstat & XMIT_ERR) |
|
{ |
|
#if 0 |
|
if(tmdp->status2 & XMIT_TDRMASK && debuglevel > 3) |
|
printk(KERN_ERR "%s: tdr-problems (e.g. no resistor)\n",dev->name); |
|
#endif |
|
/* checking some errors */ |
|
if(tmdp->status2 & XMIT_RTRY) |
|
dev->stats.tx_aborted_errors++; |
|
if(tmdp->status2 & XMIT_LCAR) |
|
dev->stats.tx_carrier_errors++; |
|
if(tmdp->status2 & (XMIT_BUFF | XMIT_UFLO )) { |
|
/* this stops the xmitter */ |
|
dev->stats.tx_fifo_errors++; |
|
if(debuglevel > 0) |
|
printk(KERN_ERR "%s: Xmit FIFO/BUFF error\n",dev->name); |
|
if(p->features & INIT_RING_BEFORE_START) { |
|
tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; /* test: resend this frame */ |
|
ni65_stop_start(dev,p); |
|
break; /* no more Xmit processing .. */ |
|
} |
|
else |
|
ni65_stop_start(dev,p); |
|
} |
|
if(debuglevel > 2) |
|
printk(KERN_ERR "%s: xmit-error: %04x %02x-%04x\n",dev->name,csr0,(int) tmdstat,(int) tmdp->status2); |
|
if(!(csr0 & CSR0_BABL)) /* don't count errors twice */ |
|
dev->stats.tx_errors++; |
|
tmdp->status2 = 0; |
|
} |
|
else { |
|
dev->stats.tx_bytes -= (short)(tmdp->blen); |
|
dev->stats.tx_packets++; |
|
} |
|
|
|
#ifdef XMT_VIA_SKB |
|
if(p->tmd_skb[p->tmdlast]) { |
|
dev_consume_skb_irq(p->tmd_skb[p->tmdlast]); |
|
p->tmd_skb[p->tmdlast] = NULL; |
|
} |
|
#endif |
|
|
|
p->tmdlast = (p->tmdlast + 1) & (TMDNUM-1); |
|
if(p->tmdlast == p->tmdnum) |
|
p->xmit_queued = 0; |
|
} |
|
netif_wake_queue(dev); |
|
} |
|
|
|
/* |
|
* We have received a packet |
|
*/ |
|
static void ni65_recv_intr(struct net_device *dev,int csr0) |
|
{ |
|
struct rmd *rmdp; |
|
int rmdstat,len; |
|
int cnt=0; |
|
struct priv *p = dev->ml_priv; |
|
|
|
rmdp = p->rmdhead + p->rmdnum; |
|
while(!( (rmdstat = rmdp->u.s.status) & RCV_OWN)) |
|
{ |
|
cnt++; |
|
if( (rmdstat & (RCV_START | RCV_END | RCV_ERR)) != (RCV_START | RCV_END) ) /* error or oversized? */ |
|
{ |
|
if(!(rmdstat & RCV_ERR)) { |
|
if(rmdstat & RCV_START) |
|
{ |
|
dev->stats.rx_length_errors++; |
|
printk(KERN_ERR "%s: recv, packet too long: %d\n",dev->name,rmdp->mlen & 0x0fff); |
|
} |
|
} |
|
else { |
|
if(debuglevel > 2) |
|
printk(KERN_ERR "%s: receive-error: %04x, lance-status: %04x/%04x\n", |
|
dev->name,(int) rmdstat,csr0,(int) inw(PORT+L_DATAREG) ); |
|
if(rmdstat & RCV_FRAM) |
|
dev->stats.rx_frame_errors++; |
|
if(rmdstat & RCV_OFLO) |
|
dev->stats.rx_over_errors++; |
|
if(rmdstat & RCV_CRC) |
|
dev->stats.rx_crc_errors++; |
|
if(rmdstat & RCV_BUF_ERR) |
|
dev->stats.rx_fifo_errors++; |
|
} |
|
if(!(csr0 & CSR0_MISS)) /* don't count errors twice */ |
|
dev->stats.rx_errors++; |
|
} |
|
else if( (len = (rmdp->mlen & 0x0fff) - 4) >= 60) |
|
{ |
|
#ifdef RCV_VIA_SKB |
|
struct sk_buff *skb = alloc_skb(R_BUF_SIZE+2+16,GFP_ATOMIC); |
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if (skb) |
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skb_reserve(skb,16); |
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#else |
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struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); |
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#endif |
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if(skb) |
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{ |
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skb_reserve(skb,2); |
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#ifdef RCV_VIA_SKB |
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if( (unsigned long) (skb->data + R_BUF_SIZE) > 0x1000000) { |
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skb_put(skb,len); |
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skb_copy_to_linear_data(skb, (unsigned char *)(p->recv_skb[p->rmdnum]->data),len); |
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} |
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else { |
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struct sk_buff *skb1 = p->recv_skb[p->rmdnum]; |
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skb_put(skb,R_BUF_SIZE); |
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p->recv_skb[p->rmdnum] = skb; |
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rmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); |
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skb = skb1; |
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skb_trim(skb,len); |
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} |
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#else |
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skb_put(skb,len); |
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skb_copy_to_linear_data(skb, (unsigned char *) p->recvbounce[p->rmdnum],len); |
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#endif |
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dev->stats.rx_packets++; |
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dev->stats.rx_bytes += len; |
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skb->protocol=eth_type_trans(skb,dev); |
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netif_rx(skb); |
|
} |
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else |
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{ |
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printk(KERN_ERR "%s: can't alloc new sk_buff\n",dev->name); |
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dev->stats.rx_dropped++; |
|
} |
|
} |
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else { |
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printk(KERN_INFO "%s: received runt packet\n",dev->name); |
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dev->stats.rx_errors++; |
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} |
|
rmdp->blen = -(R_BUF_SIZE-8); |
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rmdp->mlen = 0; |
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rmdp->u.s.status = RCV_OWN; /* change owner */ |
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p->rmdnum = (p->rmdnum + 1) & (RMDNUM-1); |
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rmdp = p->rmdhead + p->rmdnum; |
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} |
|
} |
|
|
|
/* |
|
* kick xmitter .. |
|
*/ |
|
|
|
static void ni65_timeout(struct net_device *dev, unsigned int txqueue) |
|
{ |
|
int i; |
|
struct priv *p = dev->ml_priv; |
|
|
|
printk(KERN_ERR "%s: xmitter timed out, try to restart!\n",dev->name); |
|
for(i=0;i<TMDNUM;i++) |
|
printk("%02x ",p->tmdhead[i].u.s.status); |
|
printk("\n"); |
|
ni65_lance_reinit(dev); |
|
netif_trans_update(dev); /* prevent tx timeout */ |
|
netif_wake_queue(dev); |
|
} |
|
|
|
/* |
|
* Send a packet |
|
*/ |
|
|
|
static netdev_tx_t ni65_send_packet(struct sk_buff *skb, |
|
struct net_device *dev) |
|
{ |
|
struct priv *p = dev->ml_priv; |
|
|
|
netif_stop_queue(dev); |
|
|
|
if (test_and_set_bit(0, (void*)&p->lock)) { |
|
printk(KERN_ERR "%s: Queue was locked.\n", dev->name); |
|
return NETDEV_TX_BUSY; |
|
} |
|
|
|
{ |
|
short len = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; |
|
struct tmd *tmdp; |
|
unsigned long flags; |
|
|
|
#ifdef XMT_VIA_SKB |
|
if( (unsigned long) (skb->data + skb->len) > 0x1000000) { |
|
#endif |
|
|
|
skb_copy_from_linear_data(skb, p->tmdbounce[p->tmdbouncenum], |
|
skb->len > T_BUF_SIZE ? T_BUF_SIZE : |
|
skb->len); |
|
if (len > skb->len) |
|
memset((char *)p->tmdbounce[p->tmdbouncenum]+skb->len, 0, len-skb->len); |
|
dev_kfree_skb (skb); |
|
|
|
spin_lock_irqsave(&p->ring_lock, flags); |
|
tmdp = p->tmdhead + p->tmdnum; |
|
tmdp->u.buffer = (u32) isa_virt_to_bus(p->tmdbounce[p->tmdbouncenum]); |
|
p->tmdbouncenum = (p->tmdbouncenum + 1) & (TMDNUM - 1); |
|
|
|
#ifdef XMT_VIA_SKB |
|
} |
|
else { |
|
spin_lock_irqsave(&p->ring_lock, flags); |
|
|
|
tmdp = p->tmdhead + p->tmdnum; |
|
tmdp->u.buffer = (u32) isa_virt_to_bus(skb->data); |
|
p->tmd_skb[p->tmdnum] = skb; |
|
} |
|
#endif |
|
tmdp->blen = -len; |
|
|
|
tmdp->u.s.status = XMIT_OWN | XMIT_START | XMIT_END; |
|
writedatareg(CSR0_TDMD | CSR0_INEA); /* enable xmit & interrupt */ |
|
|
|
p->xmit_queued = 1; |
|
p->tmdnum = (p->tmdnum + 1) & (TMDNUM-1); |
|
|
|
if(p->tmdnum != p->tmdlast) |
|
netif_wake_queue(dev); |
|
|
|
p->lock = 0; |
|
|
|
spin_unlock_irqrestore(&p->ring_lock, flags); |
|
} |
|
|
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static void set_multicast_list(struct net_device *dev) |
|
{ |
|
if(!ni65_lance_reinit(dev)) |
|
printk(KERN_ERR "%s: Can't switch card into MC mode!\n",dev->name); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
#ifdef MODULE |
|
static struct net_device *dev_ni65; |
|
|
|
module_param_hw(irq, int, irq, 0); |
|
module_param_hw(io, int, ioport, 0); |
|
module_param_hw(dma, int, dma, 0); |
|
MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)"); |
|
MODULE_PARM_DESC(io, "ni6510 I/O base address"); |
|
MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)"); |
|
|
|
static int __init ni65_init_module(void) |
|
{ |
|
dev_ni65 = ni65_probe(-1); |
|
return PTR_ERR_OR_ZERO(dev_ni65); |
|
} |
|
module_init(ni65_init_module); |
|
|
|
static void __exit ni65_cleanup_module(void) |
|
{ |
|
unregister_netdev(dev_ni65); |
|
cleanup_card(dev_ni65); |
|
free_netdev(dev_ni65); |
|
} |
|
module_exit(ni65_cleanup_module); |
|
#endif /* MODULE */ |
|
|
|
MODULE_LICENSE("GPL");
|
|
|