1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1866 lines
56 KiB
C
1866 lines
56 KiB
C
/* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
|
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* driver for linux.
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*/
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||
/*
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Written 1996 by Russell Nelson, with reference to skeleton.c
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written 1993-1994 by Donald Becker.
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This software may be used and distributed according to the terms
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of the GNU General Public License, incorporated herein by reference.
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The author may be reached at nelson@crynwr.com, Crynwr
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Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
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Changelog:
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Mike Cruse : mcruse@cti-ltd.com
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: Changes for Linux 2.0 compatibility.
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: Added dev_id parameter in net_interrupt(),
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: request_irq() and free_irq(). Just NULL for now.
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Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
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: in net_open() and net_close() so kerneld would know
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: that the module is in use and wouldn't eject the
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: driver prematurely.
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Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
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: as an example. Disabled autoprobing in init_module(),
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: not a good thing to do to other devices while Linux
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: is running from all accounts.
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||
Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
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Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
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: email: ethernet@crystal.cirrus.com
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Alan Cox : Removed 1.2 support, added 2.1 extra counters.
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Andrew Morton : andrewm@uow.edu.au
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: Kernel 2.3.48
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: Handle kmalloc() failures
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: Other resource allocation fixes
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: Add SMP locks
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: Integrate Russ Nelson's ALLOW_DMA functionality back in.
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: If ALLOW_DMA is true, make DMA runtime selectable
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||
: Folded in changes from Cirrus (Melody Lee
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: <klee@crystal.cirrus.com>)
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: Don't call netif_wake_queue() in net_send_packet()
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||
: Fixed an out-of-mem bug in dma_rx()
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||
: Updated Documentation/networking/cs89x0.txt
|
||
|
||
Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
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: Use skb_reserve to longword align IP header (two places)
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||
: Remove a delay loop from dma_rx()
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||
: Replace '100' with HZ
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: Clean up a couple of skb API abuses
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: Added 'cs89x0_dma=N' kernel boot option
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: Correctly initialise lp->lock in non-module compile
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Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
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: MOD_INC/DEC race fix (see
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: http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
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Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
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: Enhanced EEPROM support to cover more devices,
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: abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
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: (Jason Gunthorpe <jgg@ualberta.ca>)
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Andrew Morton : Kernel 2.4.0-test11-pre4
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: Use dev->name in request_*() (Andrey Panin)
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: Fix an error-path memleak in init_module()
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: Preserve return value from request_irq()
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: Fix type of `media' module parm (Keith Owens)
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: Use SET_MODULE_OWNER()
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: Tidied up strange request_irq() abuse in net_open().
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Andrew Morton : Kernel 2.4.3-pre1
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: Request correct number of pages for DMA (Hugh Dickens)
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: Select PP_ChipID _after_ unregister_netdev in cleanup_module()
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: because unregister_netdev() calls get_stats.
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||
: Make `version[]' __initdata
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: Uninlined the read/write reg/word functions.
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|
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Oskar Schirmer : oskar@scara.com
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: HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
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|
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Deepak Saxena : dsaxena@plexity.net
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||
: Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
|
||
|
||
*/
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/* Always include 'config.h' first in case the user wants to turn on
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or override something. */
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#include <linux/config.h>
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#include <linux/module.h>
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/*
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* Set this to zero to disable DMA code
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*
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* Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
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* module options so we don't break any startup scripts.
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*/
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#ifndef CONFIG_ARCH_IXDP2X01
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#define ALLOW_DMA 0
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#else
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#define ALLOW_DMA 1
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#endif
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/*
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* Set this to zero to remove all the debug statements via
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* dead code elimination
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*/
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#define DEBUGGING 1
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/*
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Sources:
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||
Crynwr packet driver epktisa.
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Crystal Semiconductor data sheets.
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*/
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#if ALLOW_DMA
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#include <asm/dma.h>
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#endif
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#include "cs89x0.h"
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static char version[] __initdata =
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"cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
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#define DRV_NAME "cs89x0"
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/* First, a few definitions that the brave might change.
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A zero-terminated list of I/O addresses to be probed. Some special flags..
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Addr & 1 = Read back the address port, look for signature and reset
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the page window before probing
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Addr & 3 = Reset the page window and probe
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The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
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but it is possible that a Cirrus board could be plugged into the ISA
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slots. */
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/* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
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them to system IRQ numbers. This mapping is card specific and is set to
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the configuration of the Cirrus Eval board for this chip. */
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#ifdef CONFIG_ARCH_CLPS7500
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static unsigned int netcard_portlist[] __initdata =
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{ 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
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static unsigned int cs8900_irq_map[] = {12,0,0,0};
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#elif defined(CONFIG_SH_HICOSH4)
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static unsigned int netcard_portlist[] __initdata =
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{ 0x0300, 0};
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static unsigned int cs8900_irq_map[] = {1,0,0,0};
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#elif defined(CONFIG_ARCH_IXDP2X01)
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#include <asm/irq.h>
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static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
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static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
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#else
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static unsigned int netcard_portlist[] __initdata =
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{ 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
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static unsigned int cs8900_irq_map[] = {10,11,12,5};
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#endif
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#if DEBUGGING
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static unsigned int net_debug = DEBUGGING;
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#else
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#define net_debug 0 /* gcc will remove all the debug code for us */
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#endif
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/* The number of low I/O ports used by the ethercard. */
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#define NETCARD_IO_EXTENT 16
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/* we allow the user to override various values normally set in the EEPROM */
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#define FORCE_RJ45 0x0001 /* pick one of these three */
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#define FORCE_AUI 0x0002
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#define FORCE_BNC 0x0004
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#define FORCE_AUTO 0x0010 /* pick one of these three */
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#define FORCE_HALF 0x0020
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#define FORCE_FULL 0x0030
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/* Information that need to be kept for each board. */
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struct net_local {
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struct net_device_stats stats;
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int chip_type; /* one of: CS8900, CS8920, CS8920M */
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char chip_revision; /* revision letter of the chip ('A'...) */
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int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
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int auto_neg_cnf; /* auto-negotiation word from EEPROM */
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int adapter_cnf; /* adapter configuration from EEPROM */
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int isa_config; /* ISA configuration from EEPROM */
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int irq_map; /* IRQ map from EEPROM */
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int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
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int curr_rx_cfg; /* a copy of PP_RxCFG */
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int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
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int send_underrun; /* keep track of how many underruns in a row we get */
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int force; /* force various values; see FORCE* above. */
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spinlock_t lock;
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#if ALLOW_DMA
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int use_dma; /* Flag: we're using dma */
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int dma; /* DMA channel */
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int dmasize; /* 16 or 64 */
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unsigned char *dma_buff; /* points to the beginning of the buffer */
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unsigned char *end_dma_buff; /* points to the end of the buffer */
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unsigned char *rx_dma_ptr; /* points to the next packet */
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#endif
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};
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/* Index to functions, as function prototypes. */
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static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
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static int net_open(struct net_device *dev);
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static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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static void set_multicast_list(struct net_device *dev);
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static void net_timeout(struct net_device *dev);
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static void net_rx(struct net_device *dev);
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static int net_close(struct net_device *dev);
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static struct net_device_stats *net_get_stats(struct net_device *dev);
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static void reset_chip(struct net_device *dev);
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static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
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static int get_eeprom_cksum(int off, int len, int *buffer);
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static int set_mac_address(struct net_device *dev, void *addr);
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static void count_rx_errors(int status, struct net_local *lp);
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#if ALLOW_DMA
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static void get_dma_channel(struct net_device *dev);
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static void release_dma_buff(struct net_local *lp);
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#endif
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/* Example routines you must write ;->. */
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#define tx_done(dev) 1
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/*
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* Permit 'cs89x0_dma=N' in the kernel boot environment
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*/
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#if !defined(MODULE) && (ALLOW_DMA != 0)
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static int g_cs89x0_dma;
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static int __init dma_fn(char *str)
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{
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g_cs89x0_dma = simple_strtol(str,NULL,0);
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return 1;
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}
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__setup("cs89x0_dma=", dma_fn);
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#endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
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#ifndef MODULE
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static int g_cs89x0_media__force;
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static int __init media_fn(char *str)
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{
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if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
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else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
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else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
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return 1;
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}
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__setup("cs89x0_media=", media_fn);
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||
|
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/* Check for a network adaptor of this type, and return '0' iff one exists.
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If dev->base_addr == 0, probe all likely locations.
|
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If dev->base_addr == 1, always return failure.
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If dev->base_addr == 2, allocate space for the device and return success
|
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(detachable devices only).
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Return 0 on success.
|
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*/
|
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struct net_device * __init cs89x0_probe(int unit)
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{
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struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
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unsigned *port;
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int err = 0;
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int irq;
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int io;
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|
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if (!dev)
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return ERR_PTR(-ENODEV);
|
||
|
||
sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
|
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io = dev->base_addr;
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irq = dev->irq;
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||
|
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if (net_debug)
|
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printk("cs89x0:cs89x0_probe(0x%x)\n", io);
|
||
|
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if (io > 0x1ff) { /* Check a single specified location. */
|
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err = cs89x0_probe1(dev, io, 0);
|
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} else if (io != 0) { /* Don't probe at all. */
|
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err = -ENXIO;
|
||
} else {
|
||
for (port = netcard_portlist; *port; port++) {
|
||
if (cs89x0_probe1(dev, *port, 0) == 0)
|
||
break;
|
||
dev->irq = irq;
|
||
}
|
||
if (!*port)
|
||
err = -ENODEV;
|
||
}
|
||
if (err)
|
||
goto out;
|
||
err = register_netdev(dev);
|
||
if (err)
|
||
goto out1;
|
||
return dev;
|
||
out1:
|
||
outw(PP_ChipID, dev->base_addr + ADD_PORT);
|
||
release_region(dev->base_addr, NETCARD_IO_EXTENT);
|
||
out:
|
||
free_netdev(dev);
|
||
printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
|
||
return ERR_PTR(err);
|
||
}
|
||
#endif
|
||
|
||
static int
|
||
readreg(struct net_device *dev, int portno)
|
||
{
|
||
outw(portno, dev->base_addr + ADD_PORT);
|
||
return inw(dev->base_addr + DATA_PORT);
|
||
}
|
||
|
||
static void
|
||
writereg(struct net_device *dev, int portno, int value)
|
||
{
|
||
outw(portno, dev->base_addr + ADD_PORT);
|
||
outw(value, dev->base_addr + DATA_PORT);
|
||
}
|
||
|
||
static int
|
||
readword(struct net_device *dev, int portno)
|
||
{
|
||
return inw(dev->base_addr + portno);
|
||
}
|
||
|
||
static void
|
||
writeword(struct net_device *dev, int portno, int value)
|
||
{
|
||
outw(value, dev->base_addr + portno);
|
||
}
|
||
|
||
static int __init
|
||
wait_eeprom_ready(struct net_device *dev)
|
||
{
|
||
int timeout = jiffies;
|
||
/* check to see if the EEPROM is ready, a timeout is used -
|
||
just in case EEPROM is ready when SI_BUSY in the
|
||
PP_SelfST is clear */
|
||
while(readreg(dev, PP_SelfST) & SI_BUSY)
|
||
if (jiffies - timeout >= 40)
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
static int __init
|
||
get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
|
||
{
|
||
int i;
|
||
|
||
if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
|
||
for (i = 0; i < len; i++) {
|
||
if (wait_eeprom_ready(dev) < 0) return -1;
|
||
/* Now send the EEPROM read command and EEPROM location to read */
|
||
writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
|
||
if (wait_eeprom_ready(dev) < 0) return -1;
|
||
buffer[i] = readreg(dev, PP_EEData);
|
||
if (net_debug > 3) printk("%04x ", buffer[i]);
|
||
}
|
||
if (net_debug > 3) printk("\n");
|
||
return 0;
|
||
}
|
||
|
||
static int __init
|
||
get_eeprom_cksum(int off, int len, int *buffer)
|
||
{
|
||
int i, cksum;
|
||
|
||
cksum = 0;
|
||
for (i = 0; i < len; i++)
|
||
cksum += buffer[i];
|
||
cksum &= 0xffff;
|
||
if (cksum == 0)
|
||
return 0;
|
||
return -1;
|
||
}
|
||
|
||
/* This is the real probe routine. Linux has a history of friendly device
|
||
probes on the ISA bus. A good device probes avoids doing writes, and
|
||
verifies that the correct device exists and functions.
|
||
Return 0 on success.
|
||
*/
|
||
|
||
static int __init
|
||
cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
static unsigned version_printed;
|
||
int i;
|
||
unsigned rev_type = 0;
|
||
int eeprom_buff[CHKSUM_LEN];
|
||
int retval;
|
||
|
||
SET_MODULE_OWNER(dev);
|
||
/* Initialize the device structure. */
|
||
if (!modular) {
|
||
memset(lp, 0, sizeof(*lp));
|
||
spin_lock_init(&lp->lock);
|
||
#ifndef MODULE
|
||
#if ALLOW_DMA
|
||
if (g_cs89x0_dma) {
|
||
lp->use_dma = 1;
|
||
lp->dma = g_cs89x0_dma;
|
||
lp->dmasize = 16; /* Could make this an option... */
|
||
}
|
||
#endif
|
||
lp->force = g_cs89x0_media__force;
|
||
#endif
|
||
}
|
||
|
||
/* Grab the region so we can find another board if autoIRQ fails. */
|
||
/* WTF is going on here? */
|
||
if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
|
||
printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
|
||
DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
|
||
retval = -EBUSY;
|
||
goto out1;
|
||
}
|
||
|
||
#ifdef CONFIG_SH_HICOSH4
|
||
/* truely reset the chip */
|
||
outw(0x0114, ioaddr + ADD_PORT);
|
||
outw(0x0040, ioaddr + DATA_PORT);
|
||
#endif
|
||
|
||
/* if they give us an odd I/O address, then do ONE write to
|
||
the address port, to get it back to address zero, where we
|
||
expect to find the EISA signature word. An IO with a base of 0x3
|
||
will skip the test for the ADD_PORT. */
|
||
if (ioaddr & 1) {
|
||
if (net_debug > 1)
|
||
printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
|
||
if ((ioaddr & 2) != 2)
|
||
if ((inw((ioaddr & ~3)+ ADD_PORT) & ADD_MASK) != ADD_SIG) {
|
||
printk(KERN_ERR "%s: bad signature 0x%x\n",
|
||
dev->name, inw((ioaddr & ~3)+ ADD_PORT));
|
||
retval = -ENODEV;
|
||
goto out2;
|
||
}
|
||
}
|
||
printk("PP_addr=0x%x\n", inw(ioaddr + ADD_PORT));
|
||
|
||
ioaddr &= ~3;
|
||
outw(PP_ChipID, ioaddr + ADD_PORT);
|
||
|
||
if (inw(ioaddr + DATA_PORT) != CHIP_EISA_ID_SIG) {
|
||
printk(KERN_ERR "%s: incorrect signature 0x%x\n",
|
||
dev->name, inw(ioaddr + DATA_PORT));
|
||
retval = -ENODEV;
|
||
goto out2;
|
||
}
|
||
|
||
/* Fill in the 'dev' fields. */
|
||
dev->base_addr = ioaddr;
|
||
|
||
/* get the chip type */
|
||
rev_type = readreg(dev, PRODUCT_ID_ADD);
|
||
lp->chip_type = rev_type &~ REVISON_BITS;
|
||
lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
|
||
|
||
/* Check the chip type and revision in order to set the correct send command
|
||
CS8920 revision C and CS8900 revision F can use the faster send. */
|
||
lp->send_cmd = TX_AFTER_381;
|
||
if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
|
||
lp->send_cmd = TX_NOW;
|
||
if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
|
||
lp->send_cmd = TX_NOW;
|
||
|
||
if (net_debug && version_printed++ == 0)
|
||
printk(version);
|
||
|
||
printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
|
||
dev->name,
|
||
lp->chip_type==CS8900?'0':'2',
|
||
lp->chip_type==CS8920M?"M":"",
|
||
lp->chip_revision,
|
||
dev->base_addr);
|
||
|
||
reset_chip(dev);
|
||
|
||
/* Here we read the current configuration of the chip. If there
|
||
is no Extended EEPROM then the idea is to not disturb the chip
|
||
configuration, it should have been correctly setup by automatic
|
||
EEPROM read on reset. So, if the chip says it read the EEPROM
|
||
the driver will always do *something* instead of complain that
|
||
adapter_cnf is 0. */
|
||
|
||
#ifdef CONFIG_SH_HICOSH4
|
||
if (1) {
|
||
/* For the HiCO.SH4 board, things are different: we don't
|
||
have EEPROM, but there is some data in flash, so we go
|
||
get it there directly (MAC). */
|
||
__u16 *confd;
|
||
short cnt;
|
||
if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
|
||
== 0x006c3000) {
|
||
confd = (__u16*) 0xa0013fc0;
|
||
} else {
|
||
confd = (__u16*) 0xa001ffc0;
|
||
}
|
||
cnt = (*confd++ & 0x00ff) >> 1;
|
||
while (--cnt > 0) {
|
||
__u16 j = *confd++;
|
||
|
||
switch (j & 0x0fff) {
|
||
case PP_IA:
|
||
for (i = 0; i < ETH_ALEN/2; i++) {
|
||
dev->dev_addr[i*2] = confd[i] & 0xFF;
|
||
dev->dev_addr[i*2+1] = confd[i] >> 8;
|
||
}
|
||
break;
|
||
}
|
||
j = (j >> 12) + 1;
|
||
confd += j;
|
||
cnt -= j;
|
||
}
|
||
} else
|
||
#endif
|
||
|
||
if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
|
||
(EEPROM_OK|EEPROM_PRESENT)) {
|
||
/* Load the MAC. */
|
||
for (i=0; i < ETH_ALEN/2; i++) {
|
||
unsigned int Addr;
|
||
Addr = readreg(dev, PP_IA+i*2);
|
||
dev->dev_addr[i*2] = Addr & 0xFF;
|
||
dev->dev_addr[i*2+1] = Addr >> 8;
|
||
}
|
||
|
||
/* Load the Adapter Configuration.
|
||
Note: Barring any more specific information from some
|
||
other source (ie EEPROM+Schematics), we would not know
|
||
how to operate a 10Base2 interface on the AUI port.
|
||
However, since we do read the status of HCB1 and use
|
||
settings that always result in calls to control_dc_dc(dev,0)
|
||
a BNC interface should work if the enable pin
|
||
(dc/dc converter) is on HCB1. It will be called AUI
|
||
however. */
|
||
|
||
lp->adapter_cnf = 0;
|
||
i = readreg(dev, PP_LineCTL);
|
||
/* Preserve the setting of the HCB1 pin. */
|
||
if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
|
||
lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
|
||
/* Save the sqelch bit */
|
||
if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
|
||
lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
|
||
/* Check if the card is in 10Base-t only mode */
|
||
if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
|
||
lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
|
||
/* Check if the card is in AUI only mode */
|
||
if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
|
||
lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
|
||
/* Check if the card is in Auto mode. */
|
||
if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
|
||
lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
|
||
A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
|
||
|
||
if (net_debug > 1)
|
||
printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
|
||
dev->name, i, lp->adapter_cnf);
|
||
|
||
/* IRQ. Other chips already probe, see below. */
|
||
if (lp->chip_type == CS8900)
|
||
lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
|
||
|
||
printk( "[Cirrus EEPROM] ");
|
||
}
|
||
|
||
printk("\n");
|
||
|
||
/* First check to see if an EEPROM is attached. */
|
||
#ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
|
||
if (1) {
|
||
printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
|
||
} else
|
||
#endif
|
||
if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
|
||
printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
|
||
else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
|
||
printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
|
||
} else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
|
||
/* Check if the chip was able to read its own configuration starting
|
||
at 0 in the EEPROM*/
|
||
if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
|
||
(EEPROM_OK|EEPROM_PRESENT))
|
||
printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
|
||
|
||
} else {
|
||
/* This reads an extended EEPROM that is not documented
|
||
in the CS8900 datasheet. */
|
||
|
||
/* get transmission control word but keep the autonegotiation bits */
|
||
if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
|
||
/* Store adapter configuration */
|
||
if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
|
||
/* Store ISA configuration */
|
||
lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
|
||
dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
|
||
|
||
/* eeprom_buff has 32-bit ints, so we can't just memcpy it */
|
||
/* store the initial memory base address */
|
||
for (i = 0; i < ETH_ALEN/2; i++) {
|
||
dev->dev_addr[i*2] = eeprom_buff[i];
|
||
dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
|
||
}
|
||
if (net_debug > 1)
|
||
printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
|
||
dev->name, lp->adapter_cnf);
|
||
}
|
||
|
||
/* allow them to force multiple transceivers. If they force multiple, autosense */
|
||
{
|
||
int count = 0;
|
||
if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
|
||
if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
|
||
if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
|
||
if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
|
||
else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
|
||
else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
|
||
else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
|
||
}
|
||
|
||
if (net_debug > 1)
|
||
printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
|
||
dev->name, lp->force, lp->adapter_cnf);
|
||
|
||
/* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
|
||
|
||
/* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
|
||
|
||
/* FIXME: we don't set the Ethernet address on the command line. Use
|
||
ifconfig IFACE hw ether AABBCCDDEEFF */
|
||
|
||
printk(KERN_INFO "cs89x0 media %s%s%s",
|
||
(lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
|
||
(lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
|
||
(lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
|
||
|
||
lp->irq_map = 0xffff;
|
||
|
||
/* If this is a CS8900 then no pnp soft */
|
||
if (lp->chip_type != CS8900 &&
|
||
/* Check if the ISA IRQ has been set */
|
||
(i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
|
||
(i != 0 && i < CS8920_NO_INTS))) {
|
||
if (!dev->irq)
|
||
dev->irq = i;
|
||
} else {
|
||
i = lp->isa_config & INT_NO_MASK;
|
||
if (lp->chip_type == CS8900) {
|
||
#ifdef CONFIG_ARCH_IXDP2X01
|
||
i = cs8900_irq_map[0];
|
||
#else
|
||
/* Translate the IRQ using the IRQ mapping table. */
|
||
if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
|
||
printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
|
||
else
|
||
i = cs8900_irq_map[i];
|
||
|
||
lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
|
||
} else {
|
||
int irq_map_buff[IRQ_MAP_LEN/2];
|
||
|
||
if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
|
||
IRQ_MAP_LEN/2,
|
||
irq_map_buff) >= 0) {
|
||
if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
|
||
lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
|
||
}
|
||
#endif
|
||
}
|
||
if (!dev->irq)
|
||
dev->irq = i;
|
||
}
|
||
|
||
printk(" IRQ %d", dev->irq);
|
||
|
||
#if ALLOW_DMA
|
||
if (lp->use_dma) {
|
||
get_dma_channel(dev);
|
||
printk(", DMA %d", dev->dma);
|
||
}
|
||
else
|
||
#endif
|
||
{
|
||
printk(", programmed I/O");
|
||
}
|
||
|
||
/* print the ethernet address. */
|
||
printk(", MAC");
|
||
for (i = 0; i < ETH_ALEN; i++)
|
||
{
|
||
printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
|
||
}
|
||
|
||
dev->open = net_open;
|
||
dev->stop = net_close;
|
||
dev->tx_timeout = net_timeout;
|
||
dev->watchdog_timeo = HZ;
|
||
dev->hard_start_xmit = net_send_packet;
|
||
dev->get_stats = net_get_stats;
|
||
dev->set_multicast_list = set_multicast_list;
|
||
dev->set_mac_address = set_mac_address;
|
||
|
||
printk("\n");
|
||
if (net_debug)
|
||
printk("cs89x0_probe1() successful\n");
|
||
return 0;
|
||
out2:
|
||
release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
|
||
out1:
|
||
return retval;
|
||
}
|
||
|
||
|
||
/*********************************
|
||
* This page contains DMA routines
|
||
**********************************/
|
||
|
||
#if ALLOW_DMA
|
||
|
||
#define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
|
||
|
||
static void
|
||
get_dma_channel(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
|
||
if (lp->dma) {
|
||
dev->dma = lp->dma;
|
||
lp->isa_config |= ISA_RxDMA;
|
||
} else {
|
||
if ((lp->isa_config & ANY_ISA_DMA) == 0)
|
||
return;
|
||
dev->dma = lp->isa_config & DMA_NO_MASK;
|
||
if (lp->chip_type == CS8900)
|
||
dev->dma += 5;
|
||
if (dev->dma < 5 || dev->dma > 7) {
|
||
lp->isa_config &= ~ANY_ISA_DMA;
|
||
return;
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
|
||
static void
|
||
write_dma(struct net_device *dev, int chip_type, int dma)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
if ((lp->isa_config & ANY_ISA_DMA) == 0)
|
||
return;
|
||
if (chip_type == CS8900) {
|
||
writereg(dev, PP_CS8900_ISADMA, dma-5);
|
||
} else {
|
||
writereg(dev, PP_CS8920_ISADMA, dma);
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_dma_cfg(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
|
||
if (lp->use_dma) {
|
||
if ((lp->isa_config & ANY_ISA_DMA) == 0) {
|
||
if (net_debug > 3)
|
||
printk("set_dma_cfg(): no DMA\n");
|
||
return;
|
||
}
|
||
if (lp->isa_config & ISA_RxDMA) {
|
||
lp->curr_rx_cfg |= RX_DMA_ONLY;
|
||
if (net_debug > 3)
|
||
printk("set_dma_cfg(): RX_DMA_ONLY\n");
|
||
} else {
|
||
lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
|
||
if (net_debug > 3)
|
||
printk("set_dma_cfg(): AUTO_RX_DMA\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
dma_bufcfg(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
if (lp->use_dma)
|
||
return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
dma_busctl(struct net_device *dev)
|
||
{
|
||
int retval = 0;
|
||
struct net_local *lp = netdev_priv(dev);
|
||
if (lp->use_dma) {
|
||
if (lp->isa_config & ANY_ISA_DMA)
|
||
retval |= RESET_RX_DMA; /* Reset the DMA pointer */
|
||
if (lp->isa_config & DMA_BURST)
|
||
retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
|
||
if (lp->dmasize == 64)
|
||
retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
|
||
retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
|
||
}
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
dma_rx(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
struct sk_buff *skb;
|
||
int status, length;
|
||
unsigned char *bp = lp->rx_dma_ptr;
|
||
|
||
status = bp[0] + (bp[1]<<8);
|
||
length = bp[2] + (bp[3]<<8);
|
||
bp += 4;
|
||
if (net_debug > 5) {
|
||
printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
|
||
dev->name, (unsigned long)bp, status, length);
|
||
}
|
||
if ((status & RX_OK) == 0) {
|
||
count_rx_errors(status, lp);
|
||
goto skip_this_frame;
|
||
}
|
||
|
||
/* Malloc up new buffer. */
|
||
skb = dev_alloc_skb(length + 2);
|
||
if (skb == NULL) {
|
||
if (net_debug) /* I don't think we want to do this to a stressed system */
|
||
printk("%s: Memory squeeze, dropping packet.\n", dev->name);
|
||
lp->stats.rx_dropped++;
|
||
|
||
/* AKPM: advance bp to the next frame */
|
||
skip_this_frame:
|
||
bp += (length + 3) & ~3;
|
||
if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
|
||
lp->rx_dma_ptr = bp;
|
||
return;
|
||
}
|
||
skb_reserve(skb, 2); /* longword align L3 header */
|
||
skb->dev = dev;
|
||
|
||
if (bp + length > lp->end_dma_buff) {
|
||
int semi_cnt = lp->end_dma_buff - bp;
|
||
memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
|
||
memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
|
||
length - semi_cnt);
|
||
} else {
|
||
memcpy(skb_put(skb,length), bp, length);
|
||
}
|
||
bp += (length + 3) & ~3;
|
||
if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
|
||
lp->rx_dma_ptr = bp;
|
||
|
||
if (net_debug > 3) {
|
||
printk( "%s: received %d byte DMA packet of type %x\n",
|
||
dev->name, length,
|
||
(skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
|
||
}
|
||
skb->protocol=eth_type_trans(skb,dev);
|
||
netif_rx(skb);
|
||
dev->last_rx = jiffies;
|
||
lp->stats.rx_packets++;
|
||
lp->stats.rx_bytes += length;
|
||
}
|
||
|
||
#endif /* ALLOW_DMA */
|
||
|
||
void __init reset_chip(struct net_device *dev)
|
||
{
|
||
#ifndef CONFIG_ARCH_IXDP2X01
|
||
struct net_local *lp = netdev_priv(dev);
|
||
int ioaddr = dev->base_addr;
|
||
#endif
|
||
int reset_start_time;
|
||
|
||
writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
|
||
|
||
/* wait 30 ms */
|
||
msleep(30);
|
||
|
||
#ifndef CONFIG_ARCH_IXDP2X01
|
||
if (lp->chip_type != CS8900) {
|
||
/* Hardware problem requires PNP registers to be reconfigured after a reset */
|
||
outw(PP_CS8920_ISAINT, ioaddr + ADD_PORT);
|
||
outb(dev->irq, ioaddr + DATA_PORT);
|
||
outb(0, ioaddr + DATA_PORT + 1);
|
||
|
||
outw(PP_CS8920_ISAMemB, ioaddr + ADD_PORT);
|
||
outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
|
||
outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
|
||
}
|
||
#endif /* IXDP2x01 */
|
||
|
||
/* Wait until the chip is reset */
|
||
reset_start_time = jiffies;
|
||
while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
|
||
;
|
||
}
|
||
|
||
|
||
static void
|
||
control_dc_dc(struct net_device *dev, int on_not_off)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
unsigned int selfcontrol;
|
||
int timenow = jiffies;
|
||
/* control the DC to DC convertor in the SelfControl register.
|
||
Note: This is hooked up to a general purpose pin, might not
|
||
always be a DC to DC convertor. */
|
||
|
||
selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
|
||
if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
|
||
selfcontrol |= HCB1;
|
||
else
|
||
selfcontrol &= ~HCB1;
|
||
writereg(dev, PP_SelfCTL, selfcontrol);
|
||
|
||
/* Wait for the DC/DC converter to power up - 500ms */
|
||
while (jiffies - timenow < HZ)
|
||
;
|
||
}
|
||
|
||
#define DETECTED_NONE 0
|
||
#define DETECTED_RJ45H 1
|
||
#define DETECTED_RJ45F 2
|
||
#define DETECTED_AUI 3
|
||
#define DETECTED_BNC 4
|
||
|
||
static int
|
||
detect_tp(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
int timenow = jiffies;
|
||
int fdx;
|
||
|
||
if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
|
||
|
||
/* If connected to another full duplex capable 10-Base-T card the link pulses
|
||
seem to be lost when the auto detect bit in the LineCTL is set.
|
||
To overcome this the auto detect bit will be cleared whilst testing the
|
||
10-Base-T interface. This would not be necessary for the sparrow chip but
|
||
is simpler to do it anyway. */
|
||
writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
|
||
control_dc_dc(dev, 0);
|
||
|
||
/* Delay for the hardware to work out if the TP cable is present - 150ms */
|
||
for (timenow = jiffies; jiffies - timenow < 15; )
|
||
;
|
||
if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
|
||
return DETECTED_NONE;
|
||
|
||
if (lp->chip_type == CS8900) {
|
||
switch (lp->force & 0xf0) {
|
||
#if 0
|
||
case FORCE_AUTO:
|
||
printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
|
||
return DETECTED_NONE;
|
||
#endif
|
||
/* CS8900 doesn't support AUTO, change to HALF*/
|
||
case FORCE_AUTO:
|
||
lp->force &= ~FORCE_AUTO;
|
||
lp->force |= FORCE_HALF;
|
||
break;
|
||
case FORCE_HALF:
|
||
break;
|
||
case FORCE_FULL:
|
||
writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
|
||
break;
|
||
}
|
||
fdx = readreg(dev, PP_TestCTL) & FDX_8900;
|
||
} else {
|
||
switch (lp->force & 0xf0) {
|
||
case FORCE_AUTO:
|
||
lp->auto_neg_cnf = AUTO_NEG_ENABLE;
|
||
break;
|
||
case FORCE_HALF:
|
||
lp->auto_neg_cnf = 0;
|
||
break;
|
||
case FORCE_FULL:
|
||
lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
|
||
break;
|
||
}
|
||
|
||
writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
|
||
|
||
if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
|
||
printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
|
||
while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
|
||
if (jiffies - timenow > 4000) {
|
||
printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
|
||
}
|
||
if (fdx)
|
||
return DETECTED_RJ45F;
|
||
else
|
||
return DETECTED_RJ45H;
|
||
}
|
||
|
||
/* send a test packet - return true if carrier bits are ok */
|
||
static int
|
||
send_test_pkt(struct net_device *dev)
|
||
{
|
||
char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
|
||
0, 46, /* A 46 in network order */
|
||
0, 0, /* DSAP=0 & SSAP=0 fields */
|
||
0xf3, 0 /* Control (Test Req + P bit set) */ };
|
||
long timenow = jiffies;
|
||
|
||
writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
|
||
|
||
memcpy(test_packet, dev->dev_addr, ETH_ALEN);
|
||
memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
|
||
|
||
writeword(dev, TX_CMD_PORT, TX_AFTER_ALL);
|
||
writeword(dev, TX_LEN_PORT, ETH_ZLEN);
|
||
|
||
/* Test to see if the chip has allocated memory for the packet */
|
||
while (jiffies - timenow < 5)
|
||
if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
|
||
break;
|
||
if (jiffies - timenow >= 5)
|
||
return 0; /* this shouldn't happen */
|
||
|
||
/* Write the contents of the packet */
|
||
outsw(dev->base_addr + TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
|
||
|
||
if (net_debug > 1) printk("Sending test packet ");
|
||
/* wait a couple of jiffies for packet to be received */
|
||
for (timenow = jiffies; jiffies - timenow < 3; )
|
||
;
|
||
if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
|
||
if (net_debug > 1) printk("succeeded\n");
|
||
return 1;
|
||
}
|
||
if (net_debug > 1) printk("failed\n");
|
||
return 0;
|
||
}
|
||
|
||
|
||
static int
|
||
detect_aui(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
|
||
if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
|
||
control_dc_dc(dev, 0);
|
||
|
||
writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
|
||
|
||
if (send_test_pkt(dev))
|
||
return DETECTED_AUI;
|
||
else
|
||
return DETECTED_NONE;
|
||
}
|
||
|
||
static int
|
||
detect_bnc(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
|
||
if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
|
||
control_dc_dc(dev, 1);
|
||
|
||
writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
|
||
|
||
if (send_test_pkt(dev))
|
||
return DETECTED_BNC;
|
||
else
|
||
return DETECTED_NONE;
|
||
}
|
||
|
||
|
||
static void
|
||
write_irq(struct net_device *dev, int chip_type, int irq)
|
||
{
|
||
int i;
|
||
|
||
if (chip_type == CS8900) {
|
||
/* Search the mapping table for the corresponding IRQ pin. */
|
||
for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
|
||
if (cs8900_irq_map[i] == irq)
|
||
break;
|
||
/* Not found */
|
||
if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
|
||
i = 3;
|
||
writereg(dev, PP_CS8900_ISAINT, i);
|
||
} else {
|
||
writereg(dev, PP_CS8920_ISAINT, irq);
|
||
}
|
||
}
|
||
|
||
/* Open/initialize the board. This is called (in the current kernel)
|
||
sometime after booting when the 'ifconfig' program is run.
|
||
|
||
This routine should set everything up anew at each open, even
|
||
registers that "should" only need to be set once at boot, so that
|
||
there is non-reboot way to recover if something goes wrong.
|
||
*/
|
||
|
||
/* AKPM: do we need to do any locking here? */
|
||
|
||
static int
|
||
net_open(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
int result = 0;
|
||
int i;
|
||
int ret;
|
||
|
||
#ifndef CONFIG_SH_HICOSH4 /* uses irq#1, so this won't work */
|
||
if (dev->irq < 2) {
|
||
/* Allow interrupts to be generated by the chip */
|
||
/* Cirrus' release had this: */
|
||
#if 0
|
||
writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
|
||
#endif
|
||
/* And 2.3.47 had this: */
|
||
writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
|
||
|
||
for (i = 2; i < CS8920_NO_INTS; i++) {
|
||
if ((1 << i) & lp->irq_map) {
|
||
if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
|
||
dev->irq = i;
|
||
write_irq(dev, lp->chip_type, i);
|
||
/* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (i >= CS8920_NO_INTS) {
|
||
writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
|
||
printk(KERN_ERR "cs89x0: can't get an interrupt\n");
|
||
ret = -EAGAIN;
|
||
goto bad_out;
|
||
}
|
||
}
|
||
else
|
||
#endif
|
||
{
|
||
#ifndef CONFIG_ARCH_IXDP2X01
|
||
if (((1 << dev->irq) & lp->irq_map) == 0) {
|
||
printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
|
||
dev->name, dev->irq, lp->irq_map);
|
||
ret = -EAGAIN;
|
||
goto bad_out;
|
||
}
|
||
#endif
|
||
/* FIXME: Cirrus' release had this: */
|
||
writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
|
||
/* And 2.3.47 had this: */
|
||
#if 0
|
||
writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
|
||
#endif
|
||
write_irq(dev, lp->chip_type, dev->irq);
|
||
ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
|
||
if (ret) {
|
||
if (net_debug)
|
||
printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
|
||
goto bad_out;
|
||
}
|
||
}
|
||
|
||
#if ALLOW_DMA
|
||
if (lp->use_dma) {
|
||
if (lp->isa_config & ANY_ISA_DMA) {
|
||
unsigned long flags;
|
||
lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
|
||
get_order(lp->dmasize * 1024));
|
||
|
||
if (!lp->dma_buff) {
|
||
printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
|
||
goto release_irq;
|
||
}
|
||
if (net_debug > 1) {
|
||
printk( "%s: dma %lx %lx\n",
|
||
dev->name,
|
||
(unsigned long)lp->dma_buff,
|
||
(unsigned long)isa_virt_to_bus(lp->dma_buff));
|
||
}
|
||
if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
|
||
!dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
|
||
printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
|
||
goto release_irq;
|
||
}
|
||
memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
|
||
if (request_dma(dev->dma, dev->name)) {
|
||
printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
|
||
goto release_irq;
|
||
}
|
||
write_dma(dev, lp->chip_type, dev->dma);
|
||
lp->rx_dma_ptr = lp->dma_buff;
|
||
lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
|
||
spin_lock_irqsave(&lp->lock, flags);
|
||
disable_dma(dev->dma);
|
||
clear_dma_ff(dev->dma);
|
||
set_dma_mode(dev->dma, 0x14); /* auto_init as well */
|
||
set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
|
||
set_dma_count(dev->dma, lp->dmasize*1024);
|
||
enable_dma(dev->dma);
|
||
spin_unlock_irqrestore(&lp->lock, flags);
|
||
}
|
||
}
|
||
#endif /* ALLOW_DMA */
|
||
|
||
/* set the Ethernet address */
|
||
for (i=0; i < ETH_ALEN/2; i++)
|
||
writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
|
||
|
||
/* while we're testing the interface, leave interrupts disabled */
|
||
writereg(dev, PP_BusCTL, MEMORY_ON);
|
||
|
||
/* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
|
||
if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
|
||
lp->linectl = LOW_RX_SQUELCH;
|
||
else
|
||
lp->linectl = 0;
|
||
|
||
/* check to make sure that they have the "right" hardware available */
|
||
switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
|
||
case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
|
||
case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
|
||
case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
|
||
default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
|
||
}
|
||
if (!result) {
|
||
printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
|
||
release_irq:
|
||
#if ALLOW_DMA
|
||
release_dma_buff(lp);
|
||
#endif
|
||
writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
|
||
free_irq(dev->irq, dev);
|
||
ret = -EAGAIN;
|
||
goto bad_out;
|
||
}
|
||
|
||
/* set the hardware to the configured choice */
|
||
switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
|
||
case A_CNF_MEDIA_10B_T:
|
||
result = detect_tp(dev);
|
||
if (result==DETECTED_NONE) {
|
||
printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
|
||
if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
|
||
result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
|
||
}
|
||
break;
|
||
case A_CNF_MEDIA_AUI:
|
||
result = detect_aui(dev);
|
||
if (result==DETECTED_NONE) {
|
||
printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
|
||
if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
|
||
result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
|
||
}
|
||
break;
|
||
case A_CNF_MEDIA_10B_2:
|
||
result = detect_bnc(dev);
|
||
if (result==DETECTED_NONE) {
|
||
printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
|
||
if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
|
||
result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
|
||
}
|
||
break;
|
||
case A_CNF_MEDIA_AUTO:
|
||
writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
|
||
if (lp->adapter_cnf & A_CNF_10B_T)
|
||
if ((result = detect_tp(dev)) != DETECTED_NONE)
|
||
break;
|
||
if (lp->adapter_cnf & A_CNF_AUI)
|
||
if ((result = detect_aui(dev)) != DETECTED_NONE)
|
||
break;
|
||
if (lp->adapter_cnf & A_CNF_10B_2)
|
||
if ((result = detect_bnc(dev)) != DETECTED_NONE)
|
||
break;
|
||
printk(KERN_ERR "%s: no media detected\n", dev->name);
|
||
goto release_irq;
|
||
}
|
||
switch(result) {
|
||
case DETECTED_NONE:
|
||
printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
|
||
goto release_irq;
|
||
case DETECTED_RJ45H:
|
||
printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
|
||
break;
|
||
case DETECTED_RJ45F:
|
||
printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
|
||
break;
|
||
case DETECTED_AUI:
|
||
printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
|
||
break;
|
||
case DETECTED_BNC:
|
||
printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
|
||
break;
|
||
}
|
||
|
||
/* Turn on both receive and transmit operations */
|
||
writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
|
||
|
||
/* Receive only error free packets addressed to this card */
|
||
lp->rx_mode = 0;
|
||
writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
|
||
|
||
lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
|
||
|
||
if (lp->isa_config & STREAM_TRANSFER)
|
||
lp->curr_rx_cfg |= RX_STREAM_ENBL;
|
||
#if ALLOW_DMA
|
||
set_dma_cfg(dev);
|
||
#endif
|
||
writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
|
||
|
||
writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
|
||
TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
|
||
|
||
writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
|
||
#if ALLOW_DMA
|
||
dma_bufcfg(dev) |
|
||
#endif
|
||
TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
|
||
|
||
/* now that we've got our act together, enable everything */
|
||
writereg(dev, PP_BusCTL, ENABLE_IRQ
|
||
| (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
|
||
#if ALLOW_DMA
|
||
| dma_busctl(dev)
|
||
#endif
|
||
);
|
||
netif_start_queue(dev);
|
||
if (net_debug > 1)
|
||
printk("cs89x0: net_open() succeeded\n");
|
||
return 0;
|
||
bad_out:
|
||
return ret;
|
||
}
|
||
|
||
static void net_timeout(struct net_device *dev)
|
||
{
|
||
/* If we get here, some higher level has decided we are broken.
|
||
There should really be a "kick me" function call instead. */
|
||
if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
|
||
tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
|
||
/* Try to restart the adaptor. */
|
||
netif_wake_queue(dev);
|
||
}
|
||
|
||
static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
|
||
if (net_debug > 3) {
|
||
printk("%s: sent %d byte packet of type %x\n",
|
||
dev->name, skb->len,
|
||
(skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
|
||
}
|
||
|
||
/* keep the upload from being interrupted, since we
|
||
ask the chip to start transmitting before the
|
||
whole packet has been completely uploaded. */
|
||
|
||
spin_lock_irq(&lp->lock);
|
||
netif_stop_queue(dev);
|
||
|
||
/* initiate a transmit sequence */
|
||
writeword(dev, TX_CMD_PORT, lp->send_cmd);
|
||
writeword(dev, TX_LEN_PORT, skb->len);
|
||
|
||
/* Test to see if the chip has allocated memory for the packet */
|
||
if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
|
||
/*
|
||
* Gasp! It hasn't. But that shouldn't happen since
|
||
* we're waiting for TxOk, so return 1 and requeue this packet.
|
||
*/
|
||
|
||
spin_unlock_irq(&lp->lock);
|
||
if (net_debug) printk("cs89x0: Tx buffer not free!\n");
|
||
return 1;
|
||
}
|
||
/* Write the contents of the packet */
|
||
outsw(dev->base_addr + TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
|
||
spin_unlock_irq(&lp->lock);
|
||
dev->trans_start = jiffies;
|
||
dev_kfree_skb (skb);
|
||
|
||
/*
|
||
* We DO NOT call netif_wake_queue() here.
|
||
* We also DO NOT call netif_start_queue().
|
||
*
|
||
* Either of these would cause another bottom half run through
|
||
* net_send_packet() before this packet has fully gone out. That causes
|
||
* us to hit the "Gasp!" above and the send is rescheduled. it runs like
|
||
* a dog. We just return and wait for the Tx completion interrupt handler
|
||
* to restart the netdevice layer
|
||
*/
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* The typical workload of the driver:
|
||
Handle the network interface interrupts. */
|
||
|
||
static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
||
{
|
||
struct net_device *dev = dev_id;
|
||
struct net_local *lp;
|
||
int ioaddr, status;
|
||
int handled = 0;
|
||
|
||
ioaddr = dev->base_addr;
|
||
lp = netdev_priv(dev);
|
||
|
||
/* we MUST read all the events out of the ISQ, otherwise we'll never
|
||
get interrupted again. As a consequence, we can't have any limit
|
||
on the number of times we loop in the interrupt handler. The
|
||
hardware guarantees that eventually we'll run out of events. Of
|
||
course, if you're on a slow machine, and packets are arriving
|
||
faster than you can read them off, you're screwed. Hasta la
|
||
vista, baby! */
|
||
while ((status = readword(dev, ISQ_PORT))) {
|
||
if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
|
||
handled = 1;
|
||
switch(status & ISQ_EVENT_MASK) {
|
||
case ISQ_RECEIVER_EVENT:
|
||
/* Got a packet(s). */
|
||
net_rx(dev);
|
||
break;
|
||
case ISQ_TRANSMITTER_EVENT:
|
||
lp->stats.tx_packets++;
|
||
netif_wake_queue(dev); /* Inform upper layers. */
|
||
if ((status & ( TX_OK |
|
||
TX_LOST_CRS |
|
||
TX_SQE_ERROR |
|
||
TX_LATE_COL |
|
||
TX_16_COL)) != TX_OK) {
|
||
if ((status & TX_OK) == 0) lp->stats.tx_errors++;
|
||
if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
|
||
if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
|
||
if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
|
||
if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
|
||
}
|
||
break;
|
||
case ISQ_BUFFER_EVENT:
|
||
if (status & READY_FOR_TX) {
|
||
/* we tried to transmit a packet earlier,
|
||
but inexplicably ran out of buffers.
|
||
That shouldn't happen since we only ever
|
||
load one packet. Shrug. Do the right
|
||
thing anyway. */
|
||
netif_wake_queue(dev); /* Inform upper layers. */
|
||
}
|
||
if (status & TX_UNDERRUN) {
|
||
if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
|
||
lp->send_underrun++;
|
||
if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
|
||
else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
|
||
/* transmit cycle is done, although
|
||
frame wasn't transmitted - this
|
||
avoids having to wait for the upper
|
||
layers to timeout on us, in the
|
||
event of a tx underrun */
|
||
netif_wake_queue(dev); /* Inform upper layers. */
|
||
}
|
||
#if ALLOW_DMA
|
||
if (lp->use_dma && (status & RX_DMA)) {
|
||
int count = readreg(dev, PP_DmaFrameCnt);
|
||
while(count) {
|
||
if (net_debug > 5)
|
||
printk("%s: receiving %d DMA frames\n", dev->name, count);
|
||
if (net_debug > 2 && count >1)
|
||
printk("%s: receiving %d DMA frames\n", dev->name, count);
|
||
dma_rx(dev);
|
||
if (--count == 0)
|
||
count = readreg(dev, PP_DmaFrameCnt);
|
||
if (net_debug > 2 && count > 0)
|
||
printk("%s: continuing with %d DMA frames\n", dev->name, count);
|
||
}
|
||
}
|
||
#endif
|
||
break;
|
||
case ISQ_RX_MISS_EVENT:
|
||
lp->stats.rx_missed_errors += (status >>6);
|
||
break;
|
||
case ISQ_TX_COL_EVENT:
|
||
lp->stats.collisions += (status >>6);
|
||
break;
|
||
}
|
||
}
|
||
return IRQ_RETVAL(handled);
|
||
}
|
||
|
||
static void
|
||
count_rx_errors(int status, struct net_local *lp)
|
||
{
|
||
lp->stats.rx_errors++;
|
||
if (status & RX_RUNT) lp->stats.rx_length_errors++;
|
||
if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
|
||
if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
|
||
/* per str 172 */
|
||
lp->stats.rx_crc_errors++;
|
||
if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
|
||
return;
|
||
}
|
||
|
||
/* We have a good packet(s), get it/them out of the buffers. */
|
||
static void
|
||
net_rx(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
struct sk_buff *skb;
|
||
int status, length;
|
||
|
||
int ioaddr = dev->base_addr;
|
||
status = inw(ioaddr + RX_FRAME_PORT);
|
||
length = inw(ioaddr + RX_FRAME_PORT);
|
||
|
||
if ((status & RX_OK) == 0) {
|
||
count_rx_errors(status, lp);
|
||
return;
|
||
}
|
||
|
||
/* Malloc up new buffer. */
|
||
skb = dev_alloc_skb(length + 2);
|
||
if (skb == NULL) {
|
||
#if 0 /* Again, this seems a cruel thing to do */
|
||
printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
|
||
#endif
|
||
lp->stats.rx_dropped++;
|
||
return;
|
||
}
|
||
skb_reserve(skb, 2); /* longword align L3 header */
|
||
skb->dev = dev;
|
||
|
||
insw(ioaddr + RX_FRAME_PORT, skb_put(skb, length), length >> 1);
|
||
if (length & 1)
|
||
skb->data[length-1] = inw(ioaddr + RX_FRAME_PORT);
|
||
|
||
if (net_debug > 3) {
|
||
printk( "%s: received %d byte packet of type %x\n",
|
||
dev->name, length,
|
||
(skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
|
||
}
|
||
|
||
skb->protocol=eth_type_trans(skb,dev);
|
||
netif_rx(skb);
|
||
dev->last_rx = jiffies;
|
||
lp->stats.rx_packets++;
|
||
lp->stats.rx_bytes += length;
|
||
}
|
||
|
||
#if ALLOW_DMA
|
||
static void release_dma_buff(struct net_local *lp)
|
||
{
|
||
if (lp->dma_buff) {
|
||
free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
|
||
lp->dma_buff = NULL;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
/* The inverse routine to net_open(). */
|
||
static int
|
||
net_close(struct net_device *dev)
|
||
{
|
||
#if ALLOW_DMA
|
||
struct net_local *lp = netdev_priv(dev);
|
||
#endif
|
||
|
||
netif_stop_queue(dev);
|
||
|
||
writereg(dev, PP_RxCFG, 0);
|
||
writereg(dev, PP_TxCFG, 0);
|
||
writereg(dev, PP_BufCFG, 0);
|
||
writereg(dev, PP_BusCTL, 0);
|
||
|
||
free_irq(dev->irq, dev);
|
||
|
||
#if ALLOW_DMA
|
||
if (lp->use_dma && lp->dma) {
|
||
free_dma(dev->dma);
|
||
release_dma_buff(lp);
|
||
}
|
||
#endif
|
||
|
||
/* Update the statistics here. */
|
||
return 0;
|
||
}
|
||
|
||
/* Get the current statistics. This may be called with the card open or
|
||
closed. */
|
||
static struct net_device_stats *
|
||
net_get_stats(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
unsigned long flags;
|
||
|
||
spin_lock_irqsave(&lp->lock, flags);
|
||
/* Update the statistics from the device registers. */
|
||
lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
|
||
lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
|
||
spin_unlock_irqrestore(&lp->lock, flags);
|
||
|
||
return &lp->stats;
|
||
}
|
||
|
||
static void set_multicast_list(struct net_device *dev)
|
||
{
|
||
struct net_local *lp = netdev_priv(dev);
|
||
unsigned long flags;
|
||
|
||
spin_lock_irqsave(&lp->lock, flags);
|
||
if(dev->flags&IFF_PROMISC)
|
||
{
|
||
lp->rx_mode = RX_ALL_ACCEPT;
|
||
}
|
||
else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
|
||
{
|
||
/* The multicast-accept list is initialized to accept-all, and we
|
||
rely on higher-level filtering for now. */
|
||
lp->rx_mode = RX_MULTCAST_ACCEPT;
|
||
}
|
||
else
|
||
lp->rx_mode = 0;
|
||
|
||
writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
|
||
|
||
/* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
|
||
writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
|
||
(lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
|
||
spin_unlock_irqrestore(&lp->lock, flags);
|
||
}
|
||
|
||
|
||
static int set_mac_address(struct net_device *dev, void *p)
|
||
{
|
||
int i;
|
||
struct sockaddr *addr = p;
|
||
|
||
|
||
if (netif_running(dev))
|
||
return -EBUSY;
|
||
|
||
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
||
|
||
if (net_debug) {
|
||
printk("%s: Setting MAC address to ", dev->name);
|
||
for (i = 0; i < dev->addr_len; i++)
|
||
printk(" %2.2x", dev->dev_addr[i]);
|
||
printk(".\n");
|
||
}
|
||
/* set the Ethernet address */
|
||
for (i=0; i < ETH_ALEN/2; i++)
|
||
writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
|
||
|
||
return 0;
|
||
}
|
||
|
||
#ifdef MODULE
|
||
|
||
static struct net_device *dev_cs89x0;
|
||
|
||
/*
|
||
* Support the 'debug' module parm even if we're compiled for non-debug to
|
||
* avoid breaking someone's startup scripts
|
||
*/
|
||
|
||
static int io;
|
||
static int irq;
|
||
static int debug;
|
||
static char media[8];
|
||
static int duplex=-1;
|
||
|
||
static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
|
||
static int dma;
|
||
static int dmasize=16; /* or 64 */
|
||
|
||
module_param(io, int, 0);
|
||
module_param(irq, int, 0);
|
||
module_param(debug, int, 0);
|
||
module_param_string(media, media, sizeof(media), 0);
|
||
module_param(duplex, int, 0);
|
||
module_param(dma , int, 0);
|
||
module_param(dmasize , int, 0);
|
||
module_param(use_dma , int, 0);
|
||
MODULE_PARM_DESC(io, "cs89x0 I/O base address");
|
||
MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
|
||
#if DEBUGGING
|
||
MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
|
||
#else
|
||
MODULE_PARM_DESC(debug, "(ignored)");
|
||
#endif
|
||
MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
|
||
/* No other value than -1 for duplex seems to be currently interpreted */
|
||
MODULE_PARM_DESC(duplex, "(ignored)");
|
||
#if ALLOW_DMA
|
||
MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
|
||
MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
|
||
MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
|
||
#else
|
||
MODULE_PARM_DESC(dma , "(ignored)");
|
||
MODULE_PARM_DESC(dmasize , "(ignored)");
|
||
MODULE_PARM_DESC(use_dma , "(ignored)");
|
||
#endif
|
||
|
||
MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
|
||
MODULE_LICENSE("GPL");
|
||
|
||
|
||
/*
|
||
* media=t - specify media type
|
||
or media=2
|
||
or media=aui
|
||
or medai=auto
|
||
* duplex=0 - specify forced half/full/autonegotiate duplex
|
||
* debug=# - debug level
|
||
|
||
|
||
* Default Chip Configuration:
|
||
* DMA Burst = enabled
|
||
* IOCHRDY Enabled = enabled
|
||
* UseSA = enabled
|
||
* CS8900 defaults to half-duplex if not specified on command-line
|
||
* CS8920 defaults to autoneg if not specified on command-line
|
||
* Use reset defaults for other config parameters
|
||
|
||
* Assumptions:
|
||
* media type specified is supported (circuitry is present)
|
||
* if memory address is > 1MB, then required mem decode hw is present
|
||
* if 10B-2, then agent other than driver will enable DC/DC converter
|
||
(hw or software util)
|
||
|
||
|
||
*/
|
||
|
||
int
|
||
init_module(void)
|
||
{
|
||
struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
|
||
struct net_local *lp;
|
||
int ret = 0;
|
||
|
||
#if DEBUGGING
|
||
net_debug = debug;
|
||
#else
|
||
debug = 0;
|
||
#endif
|
||
if (!dev)
|
||
return -ENOMEM;
|
||
|
||
dev->irq = irq;
|
||
dev->base_addr = io;
|
||
lp = netdev_priv(dev);
|
||
|
||
#if ALLOW_DMA
|
||
if (use_dma) {
|
||
lp->use_dma = use_dma;
|
||
lp->dma = dma;
|
||
lp->dmasize = dmasize;
|
||
}
|
||
#endif
|
||
|
||
spin_lock_init(&lp->lock);
|
||
|
||
/* boy, they'd better get these right */
|
||
if (!strcmp(media, "rj45"))
|
||
lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
|
||
else if (!strcmp(media, "aui"))
|
||
lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
|
||
else if (!strcmp(media, "bnc"))
|
||
lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
|
||
else
|
||
lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
|
||
|
||
if (duplex==-1)
|
||
lp->auto_neg_cnf = AUTO_NEG_ENABLE;
|
||
|
||
if (io == 0) {
|
||
printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
|
||
printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
|
||
ret = -EPERM;
|
||
goto out;
|
||
} else if (io <= 0x1ff) {
|
||
ret = -ENXIO;
|
||
goto out;
|
||
}
|
||
|
||
#if ALLOW_DMA
|
||
if (use_dma && dmasize != 16 && dmasize != 64) {
|
||
printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
|
||
ret = -EPERM;
|
||
goto out;
|
||
}
|
||
#endif
|
||
ret = cs89x0_probe1(dev, io, 1);
|
||
if (ret)
|
||
goto out;
|
||
|
||
if (register_netdev(dev) != 0) {
|
||
printk(KERN_ERR "cs89x0.c: No card found at 0x%x\n", io);
|
||
ret = -ENXIO;
|
||
outw(PP_ChipID, dev->base_addr + ADD_PORT);
|
||
release_region(dev->base_addr, NETCARD_IO_EXTENT);
|
||
goto out;
|
||
}
|
||
dev_cs89x0 = dev;
|
||
return 0;
|
||
out:
|
||
free_netdev(dev);
|
||
return ret;
|
||
}
|
||
|
||
void
|
||
cleanup_module(void)
|
||
{
|
||
unregister_netdev(dev_cs89x0);
|
||
outw(PP_ChipID, dev_cs89x0->base_addr + ADD_PORT);
|
||
release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
|
||
free_netdev(dev_cs89x0);
|
||
}
|
||
#endif /* MODULE */
|
||
|
||
/*
|
||
* Local variables:
|
||
* version-control: t
|
||
* kept-new-versions: 5
|
||
* c-indent-level: 8
|
||
* tab-width: 8
|
||
* End:
|
||
*
|
||
*/
|