forked from Minki/linux
5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
906 lines
25 KiB
C
906 lines
25 KiB
C
/* at1700.c: A network device driver for the Allied Telesis AT1700.
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Written 1993-98 by Donald Becker.
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Copyright 1993 United States Government as represented by the
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Director, National Security Agency.
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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 as becker@scyld.com, or C/O
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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This is a device driver for the Allied Telesis AT1700, and
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Fujitsu FMV-181/182/181A/182A/183/184/183A/184A, which are
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straight-forward Fujitsu MB86965 implementations.
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Modification for Fujitsu FMV-18X cards is done by Yutaka Tamiya
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(tamy@flab.fujitsu.co.jp).
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Sources:
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The Fujitsu MB86965 datasheet.
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After the initial version of this driver was written Gerry Sawkins of
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ATI provided their EEPROM configuration code header file.
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Thanks to NIIBE Yutaka <gniibe@mri.co.jp> for bug fixes.
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MCA bus (AT1720) support by Rene Schmit <rene@bss.lu>
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Bugs:
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The MB86965 has a design flaw that makes all probes unreliable. Not
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only is it difficult to detect, it also moves around in I/O space in
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response to inb()s from other device probes!
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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/mca-legacy.h>
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#include <linux/module.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/string.h>
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#include <linux/init.h>
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#include <linux/crc32.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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static char version[] __initdata =
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"at1700.c:v1.16 9/11/06 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
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#define DRV_NAME "at1700"
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/* Tunable parameters. */
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/* When to switch from the 64-entry multicast filter to Rx-all-multicast. */
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#define MC_FILTERBREAK 64
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/* These unusual address orders are used to verify the CONFIG register. */
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static int fmv18x_probe_list[] __initdata = {
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0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0
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};
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/*
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* ISA
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*/
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static unsigned at1700_probe_list[] __initdata = {
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0x260, 0x280, 0x2a0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
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};
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/*
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* MCA
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*/
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#ifdef CONFIG_MCA_LEGACY
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static int at1700_ioaddr_pattern[] __initdata = {
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0x00, 0x04, 0x01, 0x05, 0x02, 0x06, 0x03, 0x07
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};
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static int at1700_mca_probe_list[] __initdata = {
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0x400, 0x1400, 0x2400, 0x3400, 0x4400, 0x5400, 0x6400, 0x7400, 0
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};
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static int at1700_irq_pattern[] __initdata = {
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0x00, 0x00, 0x00, 0x30, 0x70, 0xb0, 0x00, 0x00,
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0x00, 0xf0, 0x34, 0x74, 0xb4, 0x00, 0x00, 0xf4, 0x00
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};
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#endif
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/* use 0 for production, 1 for verification, >2 for debug */
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#ifndef NET_DEBUG
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#define NET_DEBUG 1
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#endif
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static unsigned int net_debug = NET_DEBUG;
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typedef unsigned char uchar;
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/* Information that need to be kept for each board. */
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struct net_local {
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spinlock_t lock;
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unsigned char mc_filter[8];
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uint jumpered:1; /* Set iff the board has jumper config. */
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uint tx_started:1; /* Packets are on the Tx queue. */
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uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
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uint rx_started:1; /* Packets are Rxing. */
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uchar tx_queue; /* Number of packet on the Tx queue. */
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char mca_slot; /* -1 means ISA */
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ushort tx_queue_len; /* Current length of the Tx queue. */
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};
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/* Offsets from the base address. */
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#define STATUS 0
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#define TX_STATUS 0
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#define RX_STATUS 1
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#define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
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#define RX_INTR 3
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#define TX_MODE 4
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#define RX_MODE 5
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#define CONFIG_0 6 /* Misc. configuration settings. */
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#define CONFIG_1 7
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/* Run-time register bank 2 definitions. */
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#define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
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#define TX_START 10
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#define COL16CNTL 11 /* Controll Reg for 16 collisions */
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#define MODE13 13
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#define RX_CTRL 14
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/* Configuration registers only on the '865A/B chips. */
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#define EEPROM_Ctrl 16
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#define EEPROM_Data 17
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#define CARDSTATUS 16 /* FMV-18x Card Status */
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#define CARDSTATUS1 17 /* FMV-18x Card Status */
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#define IOCONFIG 18 /* Either read the jumper, or move the I/O. */
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#define IOCONFIG1 19
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#define SAPROM 20 /* The station address PROM, if no EEPROM. */
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#define MODE24 24
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#define RESET 31 /* Write to reset some parts of the chip. */
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#define AT1700_IO_EXTENT 32
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#define PORT_OFFSET(o) (o)
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#define TX_TIMEOUT 10
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/* Index to functions, as function prototypes. */
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static int at1700_probe1(struct net_device *dev, int ioaddr);
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static int read_eeprom(long ioaddr, int location);
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static int net_open(struct net_device *dev);
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static netdev_tx_t net_send_packet(struct sk_buff *skb,
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struct net_device *dev);
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static irqreturn_t net_interrupt(int irq, void *dev_id);
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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 void set_rx_mode(struct net_device *dev);
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static void net_tx_timeout (struct net_device *dev);
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#ifdef CONFIG_MCA_LEGACY
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struct at1720_mca_adapters_struct {
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char* name;
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int id;
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};
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/* rEnE : maybe there are others I don't know off... */
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static struct at1720_mca_adapters_struct at1720_mca_adapters[] __initdata = {
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{ "Allied Telesys AT1720AT", 0x6410 },
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{ "Allied Telesys AT1720BT", 0x6413 },
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{ "Allied Telesys AT1720T", 0x6416 },
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{ NULL, 0 },
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};
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#endif
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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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*/
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static int io = 0x260;
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static int irq;
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static void cleanup_card(struct net_device *dev)
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{
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#ifdef CONFIG_MCA_LEGACY
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struct net_local *lp = netdev_priv(dev);
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if (lp->mca_slot >= 0)
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mca_mark_as_unused(lp->mca_slot);
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#endif
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free_irq(dev->irq, NULL);
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release_region(dev->base_addr, AT1700_IO_EXTENT);
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}
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struct net_device * __init at1700_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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if (!dev)
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return ERR_PTR(-ENODEV);
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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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io = dev->base_addr;
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irq = dev->irq;
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} else {
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dev->base_addr = io;
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dev->irq = irq;
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}
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if (io > 0x1ff) { /* Check a single specified location. */
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err = at1700_probe1(dev, io);
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} else if (io != 0) { /* Don't probe at all. */
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err = -ENXIO;
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} else {
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for (port = at1700_probe_list; *port; port++) {
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if (at1700_probe1(dev, *port) == 0)
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break;
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dev->irq = irq;
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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;
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err = register_netdev(dev);
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if (err)
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goto out1;
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return dev;
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out1:
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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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}
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static const struct net_device_ops at1700_netdev_ops = {
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.ndo_open = net_open,
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.ndo_stop = net_close,
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.ndo_start_xmit = net_send_packet,
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.ndo_set_multicast_list = set_rx_mode,
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.ndo_tx_timeout = net_tx_timeout,
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.ndo_change_mtu = eth_change_mtu,
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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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/* The Fujitsu datasheet suggests that the NIC be probed for by checking its
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"signature", the default bit pattern after a reset. This *doesn't* work --
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there is no way to reset the bus interface without a complete power-cycle!
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It turns out that ATI came to the same conclusion I did: the only thing
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that can be done is checking a few bits and then diving right into an
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EEPROM read. */
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static int __init at1700_probe1(struct net_device *dev, int ioaddr)
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{
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char fmv_irqmap[4] = {3, 7, 10, 15};
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char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
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char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
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unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
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int slot, ret = -ENODEV;
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struct net_local *lp = netdev_priv(dev);
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if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
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return -EBUSY;
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/* Resetting the chip doesn't reset the ISA interface, so don't bother.
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That means we have to be careful with the register values we probe
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for.
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*/
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#ifdef notdef
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printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
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ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
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read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
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#endif
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#ifdef CONFIG_MCA_LEGACY
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/* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
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/* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
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modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
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to support standard MCA probing. */
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/* redone for multi-card detection by ZP Gu (zpg@castle.net) */
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/* now works as a module */
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if (MCA_bus) {
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int j;
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int l_i;
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u_char pos3, pos4;
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for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
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slot = 0;
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while (slot != MCA_NOTFOUND) {
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slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
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if (slot == MCA_NOTFOUND) break;
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/* if we get this far, an adapter has been detected and is
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enabled */
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pos3 = mca_read_stored_pos( slot, 3 );
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pos4 = mca_read_stored_pos( slot, 4 );
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for (l_i = 0; l_i < 8; l_i++)
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if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
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break;
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ioaddr = at1700_mca_probe_list[l_i];
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for (irq = 0; irq < 0x10; irq++)
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if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
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break;
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/* probing for a card at a particular IO/IRQ */
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if ((dev->irq && dev->irq != irq) ||
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(dev->base_addr && dev->base_addr != ioaddr)) {
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slot++; /* probing next slot */
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continue;
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}
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dev->irq = irq;
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/* claim the slot */
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mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
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mca_mark_as_used(slot);
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goto found;
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}
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}
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/* if we get here, we didn't find an MCA adapter - try ISA */
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}
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#endif
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slot = -1;
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/* We must check for the EEPROM-config boards first, else accessing
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IOCONFIG0 will move the board! */
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if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr &&
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read_eeprom(ioaddr, 4) == 0x0000 &&
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(read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
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is_at1700 = 1;
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else if (inb(ioaddr + SAPROM ) == 0x00 &&
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inb(ioaddr + SAPROM + 1) == 0x00 &&
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inb(ioaddr + SAPROM + 2) == 0x0e)
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is_fmv18x = 1;
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else {
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goto err_out;
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}
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#ifdef CONFIG_MCA_LEGACY
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found:
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#endif
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/* Reset the internal state machines. */
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outb(0, ioaddr + RESET);
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if (is_at1700) {
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irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
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| (read_eeprom(ioaddr, 0)>>14)];
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} else {
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/* Check PnP mode for FMV-183/184/183A/184A. */
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/* This PnP routine is very poor. IO and IRQ should be known. */
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if (inb(ioaddr + CARDSTATUS1) & 0x20) {
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irq = dev->irq;
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for (i = 0; i < 8; i++) {
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if (irq == fmv_irqmap_pnp[i])
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break;
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}
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if (i == 8) {
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goto err_mca;
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}
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} else {
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if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
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goto err_mca;
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irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
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}
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}
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printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
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is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
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dev->base_addr = ioaddr;
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dev->irq = irq;
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if (is_at1700) {
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for(i = 0; i < 3; i++) {
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unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
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((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
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}
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} else {
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for(i = 0; i < 6; i++) {
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unsigned char val = inb(ioaddr + SAPROM + i);
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dev->dev_addr[i] = val;
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}
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}
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printk("%pM", dev->dev_addr);
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/* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
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rather than 150 ohm shielded twisted pair compensation.
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0x0000 == auto-sense the interface
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0x0800 == use TP interface
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0x1800 == use coax interface
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*/
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{
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const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
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if (is_at1700) {
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ushort setup_value = read_eeprom(ioaddr, 12);
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dev->if_port = setup_value >> 8;
|
|
} else {
|
|
ushort setup_value = inb(ioaddr + CARDSTATUS);
|
|
switch (setup_value & 0x07) {
|
|
case 0x01: /* 10base5 */
|
|
case 0x02: /* 10base2 */
|
|
dev->if_port = 0x18; break;
|
|
case 0x04: /* 10baseT */
|
|
dev->if_port = 0x08; break;
|
|
default: /* auto-sense */
|
|
dev->if_port = 0x00; break;
|
|
}
|
|
}
|
|
printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
|
|
}
|
|
|
|
/* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
|
|
bus access, two 4K Tx queues, and disabled Tx and Rx. */
|
|
outb(0xda, ioaddr + CONFIG_0);
|
|
|
|
/* Set the station address in bank zero. */
|
|
outb(0x00, ioaddr + CONFIG_1);
|
|
for (i = 0; i < 6; i++)
|
|
outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
|
|
|
|
/* Switch to bank 1 and set the multicast table to accept none. */
|
|
outb(0x04, ioaddr + CONFIG_1);
|
|
for (i = 0; i < 8; i++)
|
|
outb(0x00, ioaddr + PORT_OFFSET(8 + i));
|
|
|
|
|
|
/* Switch to bank 2 */
|
|
/* Lock our I/O address, and set manual processing mode for 16 collisions. */
|
|
outb(0x08, ioaddr + CONFIG_1);
|
|
outb(dev->if_port, ioaddr + MODE13);
|
|
outb(0x00, ioaddr + COL16CNTL);
|
|
|
|
if (net_debug)
|
|
printk(version);
|
|
|
|
dev->netdev_ops = &at1700_netdev_ops;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
|
|
spin_lock_init(&lp->lock);
|
|
|
|
lp->jumpered = is_fmv18x;
|
|
lp->mca_slot = slot;
|
|
/* Snarf the interrupt vector now. */
|
|
ret = request_irq(irq, net_interrupt, 0, DRV_NAME, dev);
|
|
if (ret) {
|
|
printk(KERN_ERR "AT1700 at %#3x is unusable due to a "
|
|
"conflict on IRQ %d.\n",
|
|
ioaddr, irq);
|
|
goto err_mca;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_mca:
|
|
#ifdef CONFIG_MCA_LEGACY
|
|
if (slot >= 0)
|
|
mca_mark_as_unused(slot);
|
|
#endif
|
|
err_out:
|
|
release_region(ioaddr, AT1700_IO_EXTENT);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* EEPROM_Ctrl bits. */
|
|
#define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */
|
|
#define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */
|
|
#define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */
|
|
#define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */
|
|
|
|
/* The EEPROM commands include the alway-set leading bit. */
|
|
#define EE_WRITE_CMD (5 << 6)
|
|
#define EE_READ_CMD (6 << 6)
|
|
#define EE_ERASE_CMD (7 << 6)
|
|
|
|
static int __init read_eeprom(long ioaddr, int location)
|
|
{
|
|
int i;
|
|
unsigned short retval = 0;
|
|
long ee_addr = ioaddr + EEPROM_Ctrl;
|
|
long ee_daddr = ioaddr + EEPROM_Data;
|
|
int read_cmd = location | EE_READ_CMD;
|
|
|
|
/* Shift the read command bits out. */
|
|
for (i = 9; i >= 0; i--) {
|
|
short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
|
outb(EE_CS, ee_addr);
|
|
outb(dataval, ee_daddr);
|
|
outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */
|
|
}
|
|
outb(EE_DATA_WRITE, ee_daddr);
|
|
for (i = 16; i > 0; i--) {
|
|
outb(EE_CS, ee_addr);
|
|
outb(EE_CS | EE_SHIFT_CLK, ee_addr);
|
|
retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0);
|
|
}
|
|
|
|
/* Terminate the EEPROM access. */
|
|
outb(EE_CS, ee_addr);
|
|
outb(EE_SHIFT_CLK, ee_addr);
|
|
outb(0, ee_addr);
|
|
return retval;
|
|
}
|
|
|
|
|
|
|
|
static int net_open(struct net_device *dev)
|
|
{
|
|
struct net_local *lp = netdev_priv(dev);
|
|
int ioaddr = dev->base_addr;
|
|
|
|
/* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
|
|
bus access, and two 4K Tx queues. */
|
|
outb(0x5a, ioaddr + CONFIG_0);
|
|
|
|
/* Powerup, switch to register bank 2, and enable the Rx and Tx. */
|
|
outb(0xe8, ioaddr + CONFIG_1);
|
|
|
|
lp->tx_started = 0;
|
|
lp->tx_queue_ready = 1;
|
|
lp->rx_started = 0;
|
|
lp->tx_queue = 0;
|
|
lp->tx_queue_len = 0;
|
|
|
|
/* Turn on hardware Tx and Rx interrupts. */
|
|
outb(0x82, ioaddr + TX_INTR);
|
|
outb(0x81, ioaddr + RX_INTR);
|
|
|
|
/* Enable the IRQ on boards of fmv18x it is feasible. */
|
|
if (lp->jumpered) {
|
|
outb(0x80, ioaddr + IOCONFIG1);
|
|
}
|
|
|
|
netif_start_queue(dev);
|
|
return 0;
|
|
}
|
|
|
|
static void net_tx_timeout (struct net_device *dev)
|
|
{
|
|
struct net_local *lp = netdev_priv(dev);
|
|
int ioaddr = dev->base_addr;
|
|
|
|
printk ("%s: transmit timed out with status %04x, %s?\n", dev->name,
|
|
inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
|
|
? "IRQ conflict" : "network cable problem");
|
|
printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
|
|
dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
|
|
inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
|
|
inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
|
|
dev->stats.tx_errors++;
|
|
/* ToDo: We should try to restart the adaptor... */
|
|
outw(0xffff, ioaddr + MODE24);
|
|
outw (0xffff, ioaddr + TX_STATUS);
|
|
outb (0x5a, ioaddr + CONFIG_0);
|
|
outb (0xe8, ioaddr + CONFIG_1);
|
|
outw (0x8182, ioaddr + TX_INTR);
|
|
outb (0x00, ioaddr + TX_START);
|
|
outb (0x03, ioaddr + COL16CNTL);
|
|
|
|
dev->trans_start = jiffies;
|
|
|
|
lp->tx_started = 0;
|
|
lp->tx_queue_ready = 1;
|
|
lp->rx_started = 0;
|
|
lp->tx_queue = 0;
|
|
lp->tx_queue_len = 0;
|
|
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
|
|
static netdev_tx_t net_send_packet (struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
struct net_local *lp = netdev_priv(dev);
|
|
int ioaddr = dev->base_addr;
|
|
short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
|
|
short len = skb->len;
|
|
unsigned char *buf = skb->data;
|
|
static u8 pad[ETH_ZLEN];
|
|
|
|
netif_stop_queue (dev);
|
|
|
|
/* We may not start transmitting unless we finish transferring
|
|
a packet into the Tx queue. During executing the following
|
|
codes we possibly catch a Tx interrupt. Thus we flag off
|
|
tx_queue_ready, so that we prevent the interrupt routine
|
|
(net_interrupt) to start transmitting. */
|
|
lp->tx_queue_ready = 0;
|
|
{
|
|
outw (length, ioaddr + DATAPORT);
|
|
/* Packet data */
|
|
outsw (ioaddr + DATAPORT, buf, len >> 1);
|
|
/* Check for dribble byte */
|
|
if (len & 1) {
|
|
outw(skb->data[skb->len-1], ioaddr + DATAPORT);
|
|
len++;
|
|
}
|
|
/* Check for packet padding */
|
|
if (length != skb->len)
|
|
outsw(ioaddr + DATAPORT, pad, (length - len + 1) >> 1);
|
|
|
|
lp->tx_queue++;
|
|
lp->tx_queue_len += length + 2;
|
|
}
|
|
lp->tx_queue_ready = 1;
|
|
|
|
if (lp->tx_started == 0) {
|
|
/* If the Tx is idle, always trigger a transmit. */
|
|
outb (0x80 | lp->tx_queue, ioaddr + TX_START);
|
|
lp->tx_queue = 0;
|
|
lp->tx_queue_len = 0;
|
|
dev->trans_start = jiffies;
|
|
lp->tx_started = 1;
|
|
netif_start_queue (dev);
|
|
} else if (lp->tx_queue_len < 4096 - 1502)
|
|
/* Yes, there is room for one more packet. */
|
|
netif_start_queue (dev);
|
|
dev_kfree_skb (skb);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* The typical workload of the driver:
|
|
Handle the network interface interrupts. */
|
|
static irqreturn_t net_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct net_local *lp;
|
|
int ioaddr, status;
|
|
int handled = 0;
|
|
|
|
if (dev == NULL) {
|
|
printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
ioaddr = dev->base_addr;
|
|
lp = netdev_priv(dev);
|
|
|
|
spin_lock (&lp->lock);
|
|
|
|
status = inw(ioaddr + TX_STATUS);
|
|
outw(status, ioaddr + TX_STATUS);
|
|
|
|
if (net_debug > 4)
|
|
printk("%s: Interrupt with status %04x.\n", dev->name, status);
|
|
if (lp->rx_started == 0 &&
|
|
(status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
|
|
/* Got a packet(s).
|
|
We cannot execute net_rx more than once at the same time for
|
|
the same device. During executing net_rx, we possibly catch a
|
|
Tx interrupt. Thus we flag on rx_started, so that we prevent
|
|
the interrupt routine (net_interrupt) to dive into net_rx
|
|
again. */
|
|
handled = 1;
|
|
lp->rx_started = 1;
|
|
outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
|
|
net_rx(dev);
|
|
outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
|
|
lp->rx_started = 0;
|
|
}
|
|
if (status & 0x00ff) {
|
|
handled = 1;
|
|
if (status & 0x02) {
|
|
/* More than 16 collisions occurred */
|
|
if (net_debug > 4)
|
|
printk("%s: 16 Collision occur during Txing.\n", dev->name);
|
|
/* Cancel sending a packet. */
|
|
outb(0x03, ioaddr + COL16CNTL);
|
|
dev->stats.collisions++;
|
|
}
|
|
if (status & 0x82) {
|
|
dev->stats.tx_packets++;
|
|
/* The Tx queue has any packets and is not being
|
|
transferred a packet from the host, start
|
|
transmitting. */
|
|
if (lp->tx_queue && lp->tx_queue_ready) {
|
|
outb(0x80 | lp->tx_queue, ioaddr + TX_START);
|
|
lp->tx_queue = 0;
|
|
lp->tx_queue_len = 0;
|
|
dev->trans_start = jiffies;
|
|
netif_wake_queue (dev);
|
|
} else {
|
|
lp->tx_started = 0;
|
|
netif_wake_queue (dev);
|
|
}
|
|
}
|
|
}
|
|
|
|
spin_unlock (&lp->lock);
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
/* We have a good packet(s), get it/them out of the buffers. */
|
|
static void
|
|
net_rx(struct net_device *dev)
|
|
{
|
|
int ioaddr = dev->base_addr;
|
|
int boguscount = 5;
|
|
|
|
while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
|
|
ushort status = inw(ioaddr + DATAPORT);
|
|
ushort pkt_len = inw(ioaddr + DATAPORT);
|
|
|
|
if (net_debug > 4)
|
|
printk("%s: Rxing packet mode %02x status %04x.\n",
|
|
dev->name, inb(ioaddr + RX_MODE), status);
|
|
#ifndef final_version
|
|
if (status == 0) {
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
if ((status & 0xF0) != 0x20) { /* There was an error. */
|
|
dev->stats.rx_errors++;
|
|
if (status & 0x08) dev->stats.rx_length_errors++;
|
|
if (status & 0x04) dev->stats.rx_frame_errors++;
|
|
if (status & 0x02) dev->stats.rx_crc_errors++;
|
|
if (status & 0x01) dev->stats.rx_over_errors++;
|
|
} else {
|
|
/* Malloc up new buffer. */
|
|
struct sk_buff *skb;
|
|
|
|
if (pkt_len > 1550) {
|
|
printk("%s: The AT1700 claimed a very large packet, size %d.\n",
|
|
dev->name, pkt_len);
|
|
/* Prime the FIFO and then flush the packet. */
|
|
inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|
dev->stats.rx_errors++;
|
|
break;
|
|
}
|
|
skb = dev_alloc_skb(pkt_len+3);
|
|
if (skb == NULL) {
|
|
printk("%s: Memory squeeze, dropping packet (len %d).\n",
|
|
dev->name, pkt_len);
|
|
/* Prime the FIFO and then flush the packet. */
|
|
inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|
dev->stats.rx_dropped++;
|
|
break;
|
|
}
|
|
skb_reserve(skb,2);
|
|
|
|
insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
|
|
skb->protocol=eth_type_trans(skb, dev);
|
|
netif_rx(skb);
|
|
dev->stats.rx_packets++;
|
|
dev->stats.rx_bytes += pkt_len;
|
|
}
|
|
if (--boguscount <= 0)
|
|
break;
|
|
}
|
|
|
|
/* If any worth-while packets have been received, dev_rint()
|
|
has done a mark_bh(NET_BH) for us and will work on them
|
|
when we get to the bottom-half routine. */
|
|
{
|
|
int i;
|
|
for (i = 0; i < 20; i++) {
|
|
if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
|
|
break;
|
|
inw(ioaddr + DATAPORT); /* dummy status read */
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|
}
|
|
|
|
if (net_debug > 5)
|
|
printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
|
|
dev->name, inb(ioaddr + RX_MODE), i);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* The inverse routine to net_open(). */
|
|
static int net_close(struct net_device *dev)
|
|
{
|
|
struct net_local *lp = netdev_priv(dev);
|
|
int ioaddr = dev->base_addr;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
/* Set configuration register 0 to disable Tx and Rx. */
|
|
outb(0xda, ioaddr + CONFIG_0);
|
|
|
|
/* No statistic counters on the chip to update. */
|
|
|
|
/* Disable the IRQ on boards of fmv18x where it is feasible. */
|
|
if (lp->jumpered) {
|
|
outb(0x00, ioaddr + IOCONFIG1);
|
|
free_irq(dev->irq, dev);
|
|
}
|
|
|
|
/* Power-down the chip. Green, green, green! */
|
|
outb(0x00, ioaddr + CONFIG_1);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
Set the multicast/promiscuous mode for this adaptor.
|
|
*/
|
|
|
|
static void
|
|
set_rx_mode(struct net_device *dev)
|
|
{
|
|
int ioaddr = dev->base_addr;
|
|
struct net_local *lp = netdev_priv(dev);
|
|
unsigned char mc_filter[8]; /* Multicast hash filter */
|
|
unsigned long flags;
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
memset(mc_filter, 0xff, sizeof(mc_filter));
|
|
outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
|
|
} else if (netdev_mc_count(dev) > MC_FILTERBREAK ||
|
|
(dev->flags & IFF_ALLMULTI)) {
|
|
/* Too many to filter perfectly -- accept all multicasts. */
|
|
memset(mc_filter, 0xff, sizeof(mc_filter));
|
|
outb(2, ioaddr + RX_MODE); /* Use normal mode. */
|
|
} else if (netdev_mc_empty(dev)) {
|
|
memset(mc_filter, 0x00, sizeof(mc_filter));
|
|
outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
|
|
} else {
|
|
struct dev_mc_list *mclist;
|
|
|
|
memset(mc_filter, 0, sizeof(mc_filter));
|
|
netdev_for_each_mc_addr(mclist, dev) {
|
|
unsigned int bit =
|
|
ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
|
|
mc_filter[bit >> 3] |= (1 << bit);
|
|
}
|
|
outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
|
|
}
|
|
|
|
spin_lock_irqsave (&lp->lock, flags);
|
|
if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
|
|
int i;
|
|
int saved_bank = inw(ioaddr + CONFIG_0);
|
|
/* Switch to bank 1 and set the multicast table. */
|
|
outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
|
|
for (i = 0; i < 8; i++)
|
|
outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
|
|
memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
|
|
outw(saved_bank, ioaddr + CONFIG_0);
|
|
}
|
|
spin_unlock_irqrestore (&lp->lock, flags);
|
|
return;
|
|
}
|
|
|
|
#ifdef MODULE
|
|
static struct net_device *dev_at1700;
|
|
|
|
module_param(io, int, 0);
|
|
module_param(irq, int, 0);
|
|
module_param(net_debug, int, 0);
|
|
MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
|
|
MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
|
|
MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
|
|
|
|
static int __init at1700_module_init(void)
|
|
{
|
|
if (io == 0)
|
|
printk("at1700: You should not use auto-probing with insmod!\n");
|
|
dev_at1700 = at1700_probe(-1);
|
|
if (IS_ERR(dev_at1700))
|
|
return PTR_ERR(dev_at1700);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit at1700_module_exit(void)
|
|
{
|
|
unregister_netdev(dev_at1700);
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cleanup_card(dev_at1700);
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free_netdev(dev_at1700);
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}
|
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module_init(at1700_module_init);
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|
module_exit(at1700_module_exit);
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#endif /* MODULE */
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MODULE_LICENSE("GPL");
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