Linux-2.6.12-rc2
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!
diff --git a/drivers/net/depca.c b/drivers/net/depca.c
new file mode 100644
index 0000000..c4aa5fe
--- /dev/null
+++ b/drivers/net/depca.c
@@ -0,0 +1,2122 @@
+/* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux.
+
+ Written 1994, 1995 by David C. Davies.
+
+
+ Copyright 1994 David C. Davies
+ and
+ United States Government
+ (as represented by the Director, National Security Agency).
+
+ Copyright 1995 Digital Equipment Corporation.
+
+
+ This software may be used and distributed according to the terms of
+ the GNU General Public License, incorporated herein by reference.
+
+ This driver is written for the Digital Equipment Corporation series
+ of DEPCA and EtherWORKS ethernet cards:
+
+ DEPCA (the original)
+ DE100
+ DE101
+ DE200 Turbo
+ DE201 Turbo
+ DE202 Turbo (TP BNC)
+ DE210
+ DE422 (EISA)
+
+ The driver has been tested on DE100, DE200 and DE202 cards in a
+ relatively busy network. The DE422 has been tested a little.
+
+ This driver will NOT work for the DE203, DE204 and DE205 series of
+ cards, since they have a new custom ASIC in place of the AMD LANCE
+ chip. See the 'ewrk3.c' driver in the Linux source tree for running
+ those cards.
+
+ I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from)
+ a DECstation 5000/200.
+
+ The author may be reached at davies@maniac.ultranet.com
+
+ =========================================================================
+
+ The driver was originally based on the 'lance.c' driver from Donald
+ Becker which is included with the standard driver distribution for
+ linux. V0.4 is a complete re-write with only the kernel interface
+ remaining from the original code.
+
+ 1) Lance.c code in /linux/drivers/net/
+ 2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook",
+ AMD, 1992 [(800) 222-9323].
+ 3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)",
+ AMD, Pub. #17881, May 1993.
+ 4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA",
+ AMD, Pub. #16907, May 1992
+ 5) "DEC EtherWORKS LC Ethernet Controller Owners Manual",
+ Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003
+ 6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual",
+ Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003
+ 7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR
+ Digital Equipment Corporation, 1989
+ 8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual",
+ Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001
+
+
+ Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this
+ driver.
+
+ The original DEPCA card requires that the ethernet ROM address counter
+ be enabled to count and has an 8 bit NICSR. The ROM counter enabling is
+ only done when a 0x08 is read as the first address octet (to minimise
+ the chances of writing over some other hardware's I/O register). The
+ NICSR accesses have been changed to byte accesses for all the cards
+ supported by this driver, since there is only one useful bit in the MSB
+ (remote boot timeout) and it is not used. Also, there is a maximum of
+ only 48kB network RAM for this card. My thanks to Torbjorn Lindh for
+ help debugging all this (and holding my feet to the fire until I got it
+ right).
+
+ The DE200 series boards have on-board 64kB RAM for use as a shared
+ memory network buffer. Only the DE100 cards make use of a 2kB buffer
+ mode which has not been implemented in this driver (only the 32kB and
+ 64kB modes are supported [16kB/48kB for the original DEPCA]).
+
+ At the most only 2 DEPCA cards can be supported on the ISA bus because
+ there is only provision for two I/O base addresses on each card (0x300
+ and 0x200). The I/O address is detected by searching for a byte sequence
+ in the Ethernet station address PROM at the expected I/O address for the
+ Ethernet PROM. The shared memory base address is 'autoprobed' by
+ looking for the self test PROM and detecting the card name. When a
+ second DEPCA is detected, information is placed in the base_addr
+ variable of the next device structure (which is created if necessary),
+ thus enabling ethif_probe initialization for the device. More than 2
+ EISA cards can be supported, but care will be needed assigning the
+ shared memory to ensure that each slot has the correct IRQ, I/O address
+ and shared memory address assigned.
+
+ ************************************************************************
+
+ NOTE: If you are using two ISA DEPCAs, it is important that you assign
+ the base memory addresses correctly. The driver autoprobes I/O 0x300
+ then 0x200. The base memory address for the first device must be less
+ than that of the second so that the auto probe will correctly assign the
+ I/O and memory addresses on the same card. I can't think of a way to do
+ this unambiguously at the moment, since there is nothing on the cards to
+ tie I/O and memory information together.
+
+ I am unable to test 2 cards together for now, so this code is
+ unchecked. All reports, good or bad, are welcome.
+
+ ************************************************************************
+
+ The board IRQ setting must be at an unused IRQ which is auto-probed
+ using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are
+ {2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is
+ really IRQ9 in machines with 16 IRQ lines.
+
+ No 16MB memory limitation should exist with this driver as DMA is not
+ used and the common memory area is in low memory on the network card (my
+ current system has 20MB and I've not had problems yet).
+
+ The ability to load this driver as a loadable module has been added. To
+ utilise this ability, you have to do <8 things:
+
+ 0) have a copy of the loadable modules code installed on your system.
+ 1) copy depca.c from the /linux/drivers/net directory to your favourite
+ temporary directory.
+ 2) if you wish, edit the source code near line 1530 to reflect the I/O
+ address and IRQ you're using (see also 5).
+ 3) compile depca.c, but include -DMODULE in the command line to ensure
+ that the correct bits are compiled (see end of source code).
+ 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a
+ kernel with the depca configuration turned off and reboot.
+ 5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100]
+ [Alan Cox: Changed the code to allow command line irq/io assignments]
+ [Dave Davies: Changed the code to allow command line mem/name
+ assignments]
+ 6) run the net startup bits for your eth?? interface manually
+ (usually /etc/rc.inet[12] at boot time).
+ 7) enjoy!
+
+ Note that autoprobing is not allowed in loadable modules - the system is
+ already up and running and you're messing with interrupts.
+
+ To unload a module, turn off the associated interface
+ 'ifconfig eth?? down' then 'rmmod depca'.
+
+ To assign a base memory address for the shared memory when running as a
+ loadable module, see 5 above. To include the adapter name (if you have
+ no PROM but know the card name) also see 5 above. Note that this last
+ option will not work with kernel built-in depca's.
+
+ The shared memory assignment for a loadable module makes sense to avoid
+ the 'memory autoprobe' picking the wrong shared memory (for the case of
+ 2 depca's in a PC).
+
+ ************************************************************************
+ Support for MCA EtherWORKS cards added 11-3-98.
+ Verified to work with up to 2 DE212 cards in a system (although not
+ fully stress-tested).
+
+ Currently known bugs/limitations:
+
+ Note: with the MCA stuff as a module, it trusts the MCA configuration,
+ not the command line for IRQ and memory address. You can
+ specify them if you want, but it will throw your values out.
+ You still have to pass the IO address it was configured as
+ though.
+
+ ************************************************************************
+ TO DO:
+ ------
+
+
+ Revision History
+ ----------------
+
+ Version Date Description
+
+ 0.1 25-jan-94 Initial writing.
+ 0.2 27-jan-94 Added LANCE TX hardware buffer chaining.
+ 0.3 1-feb-94 Added multiple DEPCA support.
+ 0.31 4-feb-94 Added DE202 recognition.
+ 0.32 19-feb-94 Tidy up. Improve multi-DEPCA support.
+ 0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable.
+ Add jabber packet fix from murf@perftech.com
+ and becker@super.org
+ 0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access.
+ 0.35 8-mar-94 Added DE201 recognition. Tidied up.
+ 0.351 30-apr-94 Added EISA support. Added DE422 recognition.
+ 0.36 16-may-94 DE422 fix released.
+ 0.37 22-jul-94 Added MODULE support
+ 0.38 15-aug-94 Added DBR ROM switch in depca_close().
+ Multi DEPCA bug fix.
+ 0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0.
+ 0.381 12-dec-94 Added DE101 recognition, fix multicast bug.
+ 0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>.
+ 0.383 22-feb-95 Fix for conflict with VESA SCSI reported by
+ <stromain@alf.dec.com>
+ 0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk>
+ 0.385 3-apr-95 Fix a recognition bug reported by
+ <ryan.niemi@lastfrontier.com>
+ 0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility
+ 0.40 25-May-95 Rewrite for portability & updated.
+ ALPHA support from <jestabro@amt.tay1.dec.com>
+ 0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from
+ suggestion by <heiko@colossus.escape.de>
+ 0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable
+ modules.
+ Add 'adapter_name' for loadable modules when no PROM.
+ Both above from a suggestion by
+ <pchen@woodruffs121.residence.gatech.edu>.
+ Add new multicasting code.
+ 0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi>
+ 0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi>
+ 0.423 7-Jun-96 Fix module load bug <kmg@barco.be>
+ 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c
+ 0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug
+ reported by <mmogilvi@elbert.uccs.edu>
+ 0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards
+ by <tymm@computer.org>
+ 0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org>
+ 0.5 14-Nov-98 Re-spin for 2.1.x kernels.
+ 0.51 27-Jun-99 Correct received packet length for CRC from
+ report by <worm@dkik.dk>
+ 0.52 16-Oct-00 Fixes for 2.3 io memory accesses
+ Fix show-stopper (ints left masked) in depca_interrupt
+ by <peterd@pnd-pc.demon.co.uk>
+ 0.53 12-Jan-01 Release resources on failure, bss tidbits
+ by acme@conectiva.com.br
+ 0.54 08-Nov-01 use library crc32 functions
+ by Matt_Domsch@dell.com
+ 0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org>
+
+ =========================================================================
+*/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include <linux/unistd.h>
+#include <linux/ctype.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/bitops.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#ifdef CONFIG_MCA
+#include <linux/mca.h>
+#endif
+
+#ifdef CONFIG_EISA
+#include <linux/eisa.h>
+#endif
+
+#include "depca.h"
+
+static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n";
+
+#ifdef DEPCA_DEBUG
+static int depca_debug = DEPCA_DEBUG;
+#else
+static int depca_debug = 1;
+#endif
+
+#define DEPCA_NDA 0xffe0 /* No Device Address */
+
+#define TX_TIMEOUT (1*HZ)
+
+/*
+** Ethernet PROM defines
+*/
+#define PROBE_LENGTH 32
+#define ETH_PROM_SIG 0xAA5500FFUL
+
+/*
+** Set the number of Tx and Rx buffers. Ensure that the memory requested
+** here is <= to the amount of shared memory set up by the board switches.
+** The number of descriptors MUST BE A POWER OF 2.
+**
+** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ)
+*/
+#define NUM_RX_DESC 8 /* Number of RX descriptors */
+#define NUM_TX_DESC 8 /* Number of TX descriptors */
+#define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */
+#define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */
+
+/*
+** EISA bus defines
+*/
+#define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */
+
+/*
+** ISA Bus defines
+*/
+#define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000}
+#define DEPCA_TOTAL_SIZE 0x10
+
+static struct {
+ u_long iobase;
+ struct platform_device *device;
+} depca_io_ports[] = {
+ { 0x300, NULL },
+ { 0x200, NULL },
+ { 0 , NULL },
+};
+
+/*
+** Name <-> Adapter mapping
+*/
+#define DEPCA_SIGNATURE {"DEPCA",\
+ "DE100","DE101",\
+ "DE200","DE201","DE202",\
+ "DE210","DE212",\
+ "DE422",\
+ ""}
+
+static char* __initdata depca_signature[] = DEPCA_SIGNATURE;
+
+enum depca_type {
+ DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown
+};
+
+static char depca_string[] = "depca";
+
+static int depca_device_remove (struct device *device);
+
+#ifdef CONFIG_EISA
+static struct eisa_device_id depca_eisa_ids[] = {
+ { "DEC4220", de422 },
+ { "" }
+};
+MODULE_DEVICE_TABLE(eisa, depca_eisa_ids);
+
+static int depca_eisa_probe (struct device *device);
+
+static struct eisa_driver depca_eisa_driver = {
+ .id_table = depca_eisa_ids,
+ .driver = {
+ .name = depca_string,
+ .probe = depca_eisa_probe,
+ .remove = __devexit_p (depca_device_remove)
+ }
+};
+#endif
+
+#ifdef CONFIG_MCA
+/*
+** Adapter ID for the MCA EtherWORKS DE210/212 adapter
+*/
+#define DE210_ID 0x628d
+#define DE212_ID 0x6def
+
+static short depca_mca_adapter_ids[] = {
+ DE210_ID,
+ DE212_ID,
+ 0x0000
+};
+
+static char *depca_mca_adapter_name[] = {
+ "DEC EtherWORKS MC Adapter (DE210)",
+ "DEC EtherWORKS MC Adapter (DE212)",
+ NULL
+};
+
+static enum depca_type depca_mca_adapter_type[] = {
+ de210,
+ de212,
+ 0
+};
+
+static int depca_mca_probe (struct device *);
+
+static struct mca_driver depca_mca_driver = {
+ .id_table = depca_mca_adapter_ids,
+ .driver = {
+ .name = depca_string,
+ .bus = &mca_bus_type,
+ .probe = depca_mca_probe,
+ .remove = __devexit_p(depca_device_remove),
+ },
+};
+#endif
+
+static int depca_isa_probe (struct device *);
+
+static struct device_driver depca_isa_driver = {
+ .name = depca_string,
+ .bus = &platform_bus_type,
+ .probe = depca_isa_probe,
+ .remove = __devexit_p(depca_device_remove),
+};
+
+/*
+** Miscellaneous info...
+*/
+#define DEPCA_STRLEN 16
+
+/*
+** Memory Alignment. Each descriptor is 4 longwords long. To force a
+** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and
+** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area
+** and hence the RX descriptor ring's first entry.
+*/
+#define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */
+#define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */
+#define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */
+
+/*
+** The DEPCA Rx and Tx ring descriptors.
+*/
+struct depca_rx_desc {
+ volatile s32 base;
+ s16 buf_length; /* This length is negative 2's complement! */
+ s16 msg_length; /* This length is "normal". */
+};
+
+struct depca_tx_desc {
+ volatile s32 base;
+ s16 length; /* This length is negative 2's complement! */
+ s16 misc; /* Errors and TDR info */
+};
+
+#define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM
+ to LANCE memory address space */
+
+/*
+** The Lance initialization block, described in databook, in common memory.
+*/
+struct depca_init {
+ u16 mode; /* Mode register */
+ u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */
+ u8 mcast_table[8]; /* Multicast Hash Table. */
+ u32 rx_ring; /* Rx ring base pointer & ring length */
+ u32 tx_ring; /* Tx ring base pointer & ring length */
+};
+
+#define DEPCA_PKT_STAT_SZ 16
+#define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you
+ increase DEPCA_PKT_STAT_SZ */
+struct depca_private {
+ char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */
+ enum depca_type adapter; /* Adapter type */
+ enum {
+ DEPCA_BUS_MCA = 1,
+ DEPCA_BUS_ISA,
+ DEPCA_BUS_EISA,
+ } depca_bus; /* type of bus */
+ struct depca_init init_block; /* Shadow Initialization block */
+/* CPU address space fields */
+ struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */
+ struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */
+ void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */
+ void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */
+ void __iomem *sh_mem; /* CPU mapped virt address of device RAM */
+ u_long mem_start; /* Bus address of device RAM (before remap) */
+ u_long mem_len; /* device memory size */
+/* Device address space fields */
+ u_long device_ram_start; /* Start of RAM in device addr space */
+/* Offsets used in both address spaces */
+ u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */
+ u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */
+ u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */
+/* Kernel-only (not device) fields */
+ int rx_new, tx_new; /* The next free ring entry */
+ int rx_old, tx_old; /* The ring entries to be free()ed. */
+ struct net_device_stats stats;
+ spinlock_t lock;
+ struct { /* Private stats counters */
+ u32 bins[DEPCA_PKT_STAT_SZ];
+ u32 unicast;
+ u32 multicast;
+ u32 broadcast;
+ u32 excessive_collisions;
+ u32 tx_underruns;
+ u32 excessive_underruns;
+ } pktStats;
+ int txRingMask; /* TX ring mask */
+ int rxRingMask; /* RX ring mask */
+ s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */
+ s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */
+};
+
+/*
+** The transmit ring full condition is described by the tx_old and tx_new
+** pointers by:
+** tx_old = tx_new Empty ring
+** tx_old = tx_new+1 Full ring
+** tx_old+txRingMask = tx_new Full ring (wrapped condition)
+*/
+#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
+ lp->tx_old+lp->txRingMask-lp->tx_new:\
+ lp->tx_old -lp->tx_new-1)
+
+/*
+** Public Functions
+*/
+static int depca_open(struct net_device *dev);
+static int depca_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t depca_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static int depca_close(struct net_device *dev);
+static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static void depca_tx_timeout(struct net_device *dev);
+static struct net_device_stats *depca_get_stats(struct net_device *dev);
+static void set_multicast_list(struct net_device *dev);
+
+/*
+** Private functions
+*/
+static void depca_init_ring(struct net_device *dev);
+static int depca_rx(struct net_device *dev);
+static int depca_tx(struct net_device *dev);
+
+static void LoadCSRs(struct net_device *dev);
+static int InitRestartDepca(struct net_device *dev);
+static int DepcaSignature(char *name, u_long paddr);
+static int DevicePresent(u_long ioaddr);
+static int get_hw_addr(struct net_device *dev);
+static void SetMulticastFilter(struct net_device *dev);
+static int load_packet(struct net_device *dev, struct sk_buff *skb);
+static void depca_dbg_open(struct net_device *dev);
+
+static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 };
+static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 };
+static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 };
+static u_char *depca_irq;
+
+static int irq;
+static int io;
+static char *adapter_name;
+static int mem; /* For loadable module assignment
+ use insmod mem=0x????? .... */
+module_param (irq, int, 0);
+module_param (io, int, 0);
+module_param (adapter_name, charp, 0);
+module_param (mem, int, 0);
+MODULE_PARM_DESC(irq, "DEPCA IRQ number");
+MODULE_PARM_DESC(io, "DEPCA I/O base address");
+MODULE_PARM_DESC(adapter_name, "DEPCA adapter name");
+MODULE_PARM_DESC(mem, "DEPCA shared memory address");
+MODULE_LICENSE("GPL");
+
+/*
+** Miscellaneous defines...
+*/
+#define STOP_DEPCA \
+ outw(CSR0, DEPCA_ADDR);\
+ outw(STOP, DEPCA_DATA)
+
+static int __init depca_hw_init (struct net_device *dev, struct device *device)
+{
+ struct depca_private *lp;
+ int i, j, offset, netRAM, mem_len, status = 0;
+ s16 nicsr;
+ u_long ioaddr;
+ u_long mem_start;
+
+ /*
+ * We are now supposed to enter this function with the
+ * following fields filled with proper values :
+ *
+ * dev->base_addr
+ * lp->mem_start
+ * lp->depca_bus
+ * lp->adapter
+ *
+ * dev->irq can be set if known from device configuration (on
+ * MCA or EISA) or module option. Otherwise, it will be auto
+ * detected.
+ */
+
+ ioaddr = dev->base_addr;
+
+ STOP_DEPCA;
+
+ nicsr = inb(DEPCA_NICSR);
+ nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM);
+ outb(nicsr, DEPCA_NICSR);
+
+ if (inw(DEPCA_DATA) != STOP) {
+ return -ENXIO;
+ }
+
+ lp = (struct depca_private *) dev->priv;
+ mem_start = lp->mem_start;
+
+ if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown)
+ return -ENXIO;
+
+ printk ("%s: %s at 0x%04lx",
+ device->bus_id, depca_signature[lp->adapter], ioaddr);
+
+ switch (lp->depca_bus) {
+#ifdef CONFIG_MCA
+ case DEPCA_BUS_MCA:
+ printk(" (MCA slot %d)", to_mca_device(device)->slot + 1);
+ break;
+#endif
+
+#ifdef CONFIG_EISA
+ case DEPCA_BUS_EISA:
+ printk(" (EISA slot %d)", to_eisa_device(device)->slot);
+ break;
+#endif
+
+ case DEPCA_BUS_ISA:
+ break;
+
+ default:
+ printk("Unknown DEPCA bus %d\n", lp->depca_bus);
+ return -ENXIO;
+ }
+
+ printk(", h/w address ");
+ status = get_hw_addr(dev);
+ if (status != 0) {
+ printk(" which has an Ethernet PROM CRC error.\n");
+ return -ENXIO;
+ }
+ for (i = 0; i < ETH_ALEN - 1; i++) { /* get the ethernet address */
+ printk("%2.2x:", dev->dev_addr[i]);
+ }
+ printk("%2.2x", dev->dev_addr[i]);
+
+ /* Set up the maximum amount of network RAM(kB) */
+ netRAM = ((lp->adapter != DEPCA) ? 64 : 48);
+ if ((nicsr & _128KB) && (lp->adapter == de422))
+ netRAM = 128;
+
+ /* Shared Memory Base Address */
+ if (nicsr & BUF) {
+ nicsr &= ~BS; /* DEPCA RAM in top 32k */
+ netRAM -= 32;
+
+ /* Only EISA/ISA needs start address to be re-computed */
+ if (lp->depca_bus != DEPCA_BUS_MCA)
+ mem_start += 0x8000;
+ }
+
+ if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init)))
+ > (netRAM << 10)) {
+ printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM);
+ return -ENXIO;
+ }
+
+ printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start);
+
+ /* Enable the shadow RAM. */
+ if (lp->adapter != DEPCA) {
+ nicsr |= SHE;
+ outb(nicsr, DEPCA_NICSR);
+ }
+
+ spin_lock_init(&lp->lock);
+ sprintf(lp->adapter_name, "%s (%s)",
+ depca_signature[lp->adapter], device->bus_id);
+ status = -EBUSY;
+
+ /* Initialisation Block */
+ if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) {
+ printk(KERN_ERR "depca: cannot request ISA memory, aborting\n");
+ goto out_priv;
+ }
+
+ status = -EIO;
+ lp->sh_mem = ioremap(mem_start, mem_len);
+ if (lp->sh_mem == NULL) {
+ printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n");
+ goto out1;
+ }
+
+ lp->mem_start = mem_start;
+ lp->mem_len = mem_len;
+ lp->device_ram_start = mem_start & LA_MASK;
+
+ offset = 0;
+ offset += sizeof(struct depca_init);
+
+ /* Tx & Rx descriptors (aligned to a quadword boundary) */
+ offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN;
+ lp->rx_ring = (struct depca_rx_desc __iomem *) (lp->sh_mem + offset);
+ lp->rx_ring_offset = offset;
+
+ offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC);
+ lp->tx_ring = (struct depca_tx_desc __iomem *) (lp->sh_mem + offset);
+ lp->tx_ring_offset = offset;
+
+ offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC);
+
+ lp->buffs_offset = offset;
+
+ /* Finish initialising the ring information. */
+ lp->rxRingMask = NUM_RX_DESC - 1;
+ lp->txRingMask = NUM_TX_DESC - 1;
+
+ /* Calculate Tx/Rx RLEN size for the descriptors. */
+ for (i = 0, j = lp->rxRingMask; j > 0; i++) {
+ j >>= 1;
+ }
+ lp->rx_rlen = (s32) (i << 29);
+ for (i = 0, j = lp->txRingMask; j > 0; i++) {
+ j >>= 1;
+ }
+ lp->tx_rlen = (s32) (i << 29);
+
+ /* Load the initialisation block */
+ depca_init_ring(dev);
+
+ /* Initialise the control and status registers */
+ LoadCSRs(dev);
+
+ /* Enable DEPCA board interrupts for autoprobing */
+ nicsr = ((nicsr & ~IM) | IEN);
+ outb(nicsr, DEPCA_NICSR);
+
+ /* To auto-IRQ we enable the initialization-done and DMA err,
+ interrupts. For now we will always get a DMA error. */
+ if (dev->irq < 2) {
+ unsigned char irqnum;
+ unsigned long irq_mask, delay;
+
+ irq_mask = probe_irq_on();
+
+ /* Assign the correct irq list */
+ switch (lp->adapter) {
+ case DEPCA:
+ case de100:
+ case de101:
+ depca_irq = de1xx_irq;
+ break;
+ case de200:
+ case de201:
+ case de202:
+ case de210:
+ case de212:
+ depca_irq = de2xx_irq;
+ break;
+ case de422:
+ depca_irq = de422_irq;
+ break;
+
+ default:
+ break; /* Not reached */
+ }
+
+ /* Trigger an initialization just for the interrupt. */
+ outw(INEA | INIT, DEPCA_DATA);
+
+ delay = jiffies + HZ/50;
+ while (time_before(jiffies, delay))
+ yield();
+
+ irqnum = probe_irq_off(irq_mask);
+
+ status = -ENXIO;
+ if (!irqnum) {
+ printk(" and failed to detect IRQ line.\n");
+ goto out2;
+ } else {
+ for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++)
+ if (irqnum == depca_irq[i]) {
+ dev->irq = irqnum;
+ printk(" and uses IRQ%d.\n", dev->irq);
+ }
+
+ if (!dev->irq) {
+ printk(" but incorrect IRQ line detected.\n");
+ goto out2;
+ }
+ }
+ } else {
+ printk(" and assigned IRQ%d.\n", dev->irq);
+ }
+
+ if (depca_debug > 1) {
+ printk(version);
+ }
+
+ /* The DEPCA-specific entries in the device structure. */
+ dev->open = &depca_open;
+ dev->hard_start_xmit = &depca_start_xmit;
+ dev->stop = &depca_close;
+ dev->get_stats = &depca_get_stats;
+ dev->set_multicast_list = &set_multicast_list;
+ dev->do_ioctl = &depca_ioctl;
+ dev->tx_timeout = depca_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ dev->mem_start = 0;
+
+ device->driver_data = dev;
+ SET_NETDEV_DEV (dev, device);
+
+ status = register_netdev(dev);
+ if (status == 0)
+ return 0;
+out2:
+ iounmap(lp->sh_mem);
+out1:
+ release_mem_region (mem_start, mem_len);
+out_priv:
+ return status;
+}
+
+
+static int depca_open(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+ s16 nicsr;
+ int status = 0;
+
+ STOP_DEPCA;
+ nicsr = inb(DEPCA_NICSR);
+
+ /* Make sure the shadow RAM is enabled */
+ if (lp->adapter != DEPCA) {
+ nicsr |= SHE;
+ outb(nicsr, DEPCA_NICSR);
+ }
+
+ /* Re-initialize the DEPCA... */
+ depca_init_ring(dev);
+ LoadCSRs(dev);
+
+ depca_dbg_open(dev);
+
+ if (request_irq(dev->irq, &depca_interrupt, 0, lp->adapter_name, dev)) {
+ printk("depca_open(): Requested IRQ%d is busy\n", dev->irq);
+ status = -EAGAIN;
+ } else {
+
+ /* Enable DEPCA board interrupts and turn off LED */
+ nicsr = ((nicsr & ~IM & ~LED) | IEN);
+ outb(nicsr, DEPCA_NICSR);
+ outw(CSR0, DEPCA_ADDR);
+
+ netif_start_queue(dev);
+
+ status = InitRestartDepca(dev);
+
+ if (depca_debug > 1) {
+ printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA));
+ printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR));
+ }
+ }
+ return status;
+}
+
+/* Initialize the lance Rx and Tx descriptor rings. */
+static void depca_init_ring(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_int i;
+ u_long offset;
+
+ /* Lock out other processes whilst setting up the hardware */
+ netif_stop_queue(dev);
+
+ lp->rx_new = lp->tx_new = 0;
+ lp->rx_old = lp->tx_old = 0;
+
+ /* Initialize the base address and length of each buffer in the ring */
+ for (i = 0; i <= lp->rxRingMask; i++) {
+ offset = lp->buffs_offset + i * RX_BUFF_SZ;
+ writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base);
+ writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length);
+ lp->rx_buff[i] = lp->sh_mem + offset;
+ }
+
+ for (i = 0; i <= lp->txRingMask; i++) {
+ offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ;
+ writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base);
+ lp->tx_buff[i] = lp->sh_mem + offset;
+ }
+
+ /* Set up the initialization block */
+ lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen;
+ lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen;
+
+ SetMulticastFilter(dev);
+
+ for (i = 0; i < ETH_ALEN; i++) {
+ lp->init_block.phys_addr[i] = dev->dev_addr[i];
+ }
+
+ lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */
+}
+
+
+static void depca_tx_timeout(struct net_device *dev)
+{
+ u_long ioaddr = dev->base_addr;
+
+ printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA));
+
+ STOP_DEPCA;
+ depca_init_ring(dev);
+ LoadCSRs(dev);
+ dev->trans_start = jiffies;
+ netif_wake_queue(dev);
+ InitRestartDepca(dev);
+}
+
+
+/*
+** Writes a socket buffer to TX descriptor ring and starts transmission
+*/
+static int depca_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+ int status = 0;
+
+ /* Transmitter timeout, serious problems. */
+ if (skb->len < 1)
+ goto out;
+
+ if (skb->len < ETH_ZLEN) {
+ skb = skb_padto(skb, ETH_ZLEN);
+ if (skb == NULL)
+ goto out;
+ }
+
+ netif_stop_queue(dev);
+
+ if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */
+ status = load_packet(dev, skb);
+
+ if (!status) {
+ /* Trigger an immediate send demand. */
+ outw(CSR0, DEPCA_ADDR);
+ outw(INEA | TDMD, DEPCA_DATA);
+
+ dev->trans_start = jiffies;
+ dev_kfree_skb(skb);
+ }
+ if (TX_BUFFS_AVAIL)
+ netif_start_queue(dev);
+ } else
+ status = -1;
+
+ out:
+ return status;
+}
+
+/*
+** The DEPCA interrupt handler.
+*/
+static irqreturn_t depca_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct depca_private *lp;
+ s16 csr0, nicsr;
+ u_long ioaddr;
+
+ if (dev == NULL) {
+ printk("depca_interrupt(): irq %d for unknown device.\n", irq);
+ return IRQ_NONE;
+ }
+
+ lp = (struct depca_private *) dev->priv;
+ ioaddr = dev->base_addr;
+
+ spin_lock(&lp->lock);
+
+ /* mask the DEPCA board interrupts and turn on the LED */
+ nicsr = inb(DEPCA_NICSR);
+ nicsr |= (IM | LED);
+ outb(nicsr, DEPCA_NICSR);
+
+ outw(CSR0, DEPCA_ADDR);
+ csr0 = inw(DEPCA_DATA);
+
+ /* Acknowledge all of the current interrupt sources ASAP. */
+ outw(csr0 & INTE, DEPCA_DATA);
+
+ if (csr0 & RINT) /* Rx interrupt (packet arrived) */
+ depca_rx(dev);
+
+ if (csr0 & TINT) /* Tx interrupt (packet sent) */
+ depca_tx(dev);
+
+ /* Any resources available? */
+ if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) {
+ netif_wake_queue(dev);
+ }
+
+ /* Unmask the DEPCA board interrupts and turn off the LED */
+ nicsr = (nicsr & ~IM & ~LED);
+ outb(nicsr, DEPCA_NICSR);
+
+ spin_unlock(&lp->lock);
+ return IRQ_HANDLED;
+}
+
+/* Called with lp->lock held */
+static int depca_rx(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ int i, entry;
+ s32 status;
+
+ for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) {
+ status = readl(&lp->rx_ring[entry].base) >> 16;
+ if (status & R_STP) { /* Remember start of frame */
+ lp->rx_old = entry;
+ }
+ if (status & R_ENP) { /* Valid frame status */
+ if (status & R_ERR) { /* There was an error. */
+ lp->stats.rx_errors++; /* Update the error stats. */
+ if (status & R_FRAM)
+ lp->stats.rx_frame_errors++;
+ if (status & R_OFLO)
+ lp->stats.rx_over_errors++;
+ if (status & R_CRC)
+ lp->stats.rx_crc_errors++;
+ if (status & R_BUFF)
+ lp->stats.rx_fifo_errors++;
+ } else {
+ short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4;
+ struct sk_buff *skb;
+
+ skb = dev_alloc_skb(pkt_len + 2);
+ if (skb != NULL) {
+ unsigned char *buf;
+ skb_reserve(skb, 2); /* 16 byte align the IP header */
+ buf = skb_put(skb, pkt_len);
+ skb->dev = dev;
+ if (entry < lp->rx_old) { /* Wrapped buffer */
+ len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ;
+ memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len);
+ memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len);
+ } else { /* Linear buffer */
+ memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len);
+ }
+
+ /*
+ ** Notify the upper protocol layers that there is another
+ ** packet to handle
+ */
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb);
+
+ /*
+ ** Update stats
+ */
+ dev->last_rx = jiffies;
+ lp->stats.rx_packets++;
+ lp->stats.rx_bytes += pkt_len;
+ for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) {
+ if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) {
+ lp->pktStats.bins[i]++;
+ i = DEPCA_PKT_STAT_SZ;
+ }
+ }
+ if (buf[0] & 0x01) { /* Multicast/Broadcast */
+ if ((*(s16 *) & buf[0] == -1) && (*(s16 *) & buf[2] == -1) && (*(s16 *) & buf[4] == -1)) {
+ lp->pktStats.broadcast++;
+ } else {
+ lp->pktStats.multicast++;
+ }
+ } else if ((*(s16 *) & buf[0] == *(s16 *) & dev->dev_addr[0]) && (*(s16 *) & buf[2] == *(s16 *) & dev->dev_addr[2]) && (*(s16 *) & buf[4] == *(s16 *) & dev->dev_addr[4])) {
+ lp->pktStats.unicast++;
+ }
+
+ lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */
+ if (lp->pktStats.bins[0] == 0) { /* Reset counters */
+ memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats));
+ }
+ } else {
+ printk("%s: Memory squeeze, deferring packet.\n", dev->name);
+ lp->stats.rx_dropped++; /* Really, deferred. */
+ break;
+ }
+ }
+ /* Change buffer ownership for this last frame, back to the adapter */
+ for (; lp->rx_old != entry; lp->rx_old = (++lp->rx_old) & lp->rxRingMask) {
+ writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base);
+ }
+ writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base);
+ }
+
+ /*
+ ** Update entry information
+ */
+ lp->rx_new = (++lp->rx_new) & lp->rxRingMask;
+ }
+
+ return 0;
+}
+
+/*
+** Buffer sent - check for buffer errors.
+** Called with lp->lock held
+*/
+static int depca_tx(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ int entry;
+ s32 status;
+ u_long ioaddr = dev->base_addr;
+
+ for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) {
+ status = readl(&lp->tx_ring[entry].base) >> 16;
+
+ if (status < 0) { /* Packet not yet sent! */
+ break;
+ } else if (status & T_ERR) { /* An error occurred. */
+ status = readl(&lp->tx_ring[entry].misc);
+ lp->stats.tx_errors++;
+ if (status & TMD3_RTRY)
+ lp->stats.tx_aborted_errors++;
+ if (status & TMD3_LCAR)
+ lp->stats.tx_carrier_errors++;
+ if (status & TMD3_LCOL)
+ lp->stats.tx_window_errors++;
+ if (status & TMD3_UFLO)
+ lp->stats.tx_fifo_errors++;
+ if (status & (TMD3_BUFF | TMD3_UFLO)) {
+ /* Trigger an immediate send demand. */
+ outw(CSR0, DEPCA_ADDR);
+ outw(INEA | TDMD, DEPCA_DATA);
+ }
+ } else if (status & (T_MORE | T_ONE)) {
+ lp->stats.collisions++;
+ } else {
+ lp->stats.tx_packets++;
+ }
+
+ /* Update all the pointers */
+ lp->tx_old = (++lp->tx_old) & lp->txRingMask;
+ }
+
+ return 0;
+}
+
+static int depca_close(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ s16 nicsr;
+ u_long ioaddr = dev->base_addr;
+
+ netif_stop_queue(dev);
+
+ outw(CSR0, DEPCA_ADDR);
+
+ if (depca_debug > 1) {
+ printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA));
+ }
+
+ /*
+ ** We stop the DEPCA here -- it occasionally polls
+ ** memory if we don't.
+ */
+ outw(STOP, DEPCA_DATA);
+
+ /*
+ ** Give back the ROM in case the user wants to go to DOS
+ */
+ if (lp->adapter != DEPCA) {
+ nicsr = inb(DEPCA_NICSR);
+ nicsr &= ~SHE;
+ outb(nicsr, DEPCA_NICSR);
+ }
+
+ /*
+ ** Free the associated irq
+ */
+ free_irq(dev->irq, dev);
+ return 0;
+}
+
+static void LoadCSRs(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+
+ outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */
+ outw((u16) lp->device_ram_start, DEPCA_DATA);
+ outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */
+ outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA);
+ outw(CSR3, DEPCA_ADDR); /* ALE control */
+ outw(ACON, DEPCA_DATA);
+
+ outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */
+
+ return;
+}
+
+static int InitRestartDepca(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+ int i, status = 0;
+
+ /* Copy the shadow init_block to shared memory */
+ memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init));
+
+ outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */
+ outw(INIT, DEPCA_DATA); /* initialize DEPCA */
+
+ /* wait for lance to complete initialisation */
+ for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++);
+
+ if (i != 100) {
+ /* clear IDON by writing a "1", enable interrupts and start lance */
+ outw(IDON | INEA | STRT, DEPCA_DATA);
+ if (depca_debug > 2) {
+ printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA));
+ }
+ } else {
+ printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA));
+ status = -1;
+ }
+
+ return status;
+}
+
+static struct net_device_stats *depca_get_stats(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+
+ /* Null body since there is no framing error counter */
+
+ return &lp->stats;
+}
+
+/*
+** Set or clear the multicast filter for this adaptor.
+*/
+static void set_multicast_list(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+
+ if (dev) {
+ netif_stop_queue(dev);
+ while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */
+
+ STOP_DEPCA; /* Temporarily stop the depca. */
+ depca_init_ring(dev); /* Initialize the descriptor rings */
+
+ if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */
+ lp->init_block.mode |= PROM;
+ } else {
+ SetMulticastFilter(dev);
+ lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */
+ }
+
+ LoadCSRs(dev); /* Reload CSR3 */
+ InitRestartDepca(dev); /* Resume normal operation. */
+ netif_start_queue(dev); /* Unlock the TX ring */
+ }
+}
+
+/*
+** Calculate the hash code and update the logical address filter
+** from a list of ethernet multicast addresses.
+** Big endian crc one liner is mine, all mine, ha ha ha ha!
+** LANCE calculates its hash codes big endian.
+*/
+static void SetMulticastFilter(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ struct dev_mc_list *dmi = dev->mc_list;
+ char *addrs;
+ int i, j, bit, byte;
+ u16 hashcode;
+ u32 crc;
+
+ if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */
+ for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) {
+ lp->init_block.mcast_table[i] = (char) 0xff;
+ }
+ } else {
+ for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */
+ lp->init_block.mcast_table[i] = 0;
+ }
+ /* Add multicast addresses */
+ for (i = 0; i < dev->mc_count; i++) { /* for each address in the list */
+ addrs = dmi->dmi_addr;
+ dmi = dmi->next;
+ if ((*addrs & 0x01) == 1) { /* multicast address? */
+ crc = ether_crc(ETH_ALEN, addrs);
+ hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */
+ for (j = 0; j < 5; j++) { /* ... in reverse order. */
+ hashcode = (hashcode << 1) | ((crc >>= 1) & 1);
+ }
+
+
+ byte = hashcode >> 3; /* bit[3-5] -> byte in filter */
+ bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */
+ lp->init_block.mcast_table[byte] |= bit;
+ }
+ }
+ }
+
+ return;
+}
+
+static int __init depca_common_init (u_long ioaddr, struct net_device **devp)
+{
+ int status = 0;
+
+ if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) {
+ status = -EBUSY;
+ goto out;
+ }
+
+ if (DevicePresent(ioaddr)) {
+ status = -ENODEV;
+ goto out_release;
+ }
+
+ if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) {
+ status = -ENOMEM;
+ goto out_release;
+ }
+
+ return 0;
+
+ out_release:
+ release_region (ioaddr, DEPCA_TOTAL_SIZE);
+ out:
+ return status;
+}
+
+#ifdef CONFIG_MCA
+/*
+** Microchannel bus I/O device probe
+*/
+static int __init depca_mca_probe(struct device *device)
+{
+ unsigned char pos[2];
+ unsigned char where;
+ unsigned long iobase, mem_start;
+ int irq, err;
+ struct mca_device *mdev = to_mca_device (device);
+ struct net_device *dev;
+ struct depca_private *lp;
+
+ /*
+ ** Search for the adapter. If an address has been given, search
+ ** specifically for the card at that address. Otherwise find the
+ ** first card in the system.
+ */
+
+ pos[0] = mca_device_read_stored_pos(mdev, 2);
+ pos[1] = mca_device_read_stored_pos(mdev, 3);
+
+ /*
+ ** IO of card is handled by bits 1 and 2 of pos0.
+ **
+ ** bit2 bit1 IO
+ ** 0 0 0x2c00
+ ** 0 1 0x2c10
+ ** 1 0 0x2c20
+ ** 1 1 0x2c30
+ */
+ where = (pos[0] & 6) >> 1;
+ iobase = 0x2c00 + (0x10 * where);
+
+ /*
+ ** Found the adapter we were looking for. Now start setting it up.
+ **
+ ** First work on decoding the IRQ. It's stored in the lower 4 bits
+ ** of pos1. Bits are as follows (from the ADF file):
+ **
+ ** Bits
+ ** 3 2 1 0 IRQ
+ ** --------------------
+ ** 0 0 1 0 5
+ ** 0 0 0 1 9
+ ** 0 1 0 0 10
+ ** 1 0 0 0 11
+ */
+ where = pos[1] & 0x0f;
+ switch (where) {
+ case 1:
+ irq = 9;
+ break;
+ case 2:
+ irq = 5;
+ break;
+ case 4:
+ irq = 10;
+ break;
+ case 8:
+ irq = 11;
+ break;
+ default:
+ printk("%s: mca_probe IRQ error. You should never get here (%d).\n", dev->name, where);
+ return -EINVAL;
+ }
+
+ /*
+ ** Shared memory address of adapter is stored in bits 3-5 of pos0.
+ ** They are mapped as follows:
+ **
+ ** Bit
+ ** 5 4 3 Memory Addresses
+ ** 0 0 0 C0000-CFFFF (64K)
+ ** 1 0 0 C8000-CFFFF (32K)
+ ** 0 0 1 D0000-DFFFF (64K)
+ ** 1 0 1 D8000-DFFFF (32K)
+ ** 0 1 0 E0000-EFFFF (64K)
+ ** 1 1 0 E8000-EFFFF (32K)
+ */
+ where = (pos[0] & 0x18) >> 3;
+ mem_start = 0xc0000 + (where * 0x10000);
+ if (pos[0] & 0x20) {
+ mem_start += 0x8000;
+ }
+
+ /* claim the slot */
+ strncpy(mdev->name, depca_mca_adapter_name[mdev->index],
+ sizeof(mdev->name));
+ mca_device_set_claim(mdev, 1);
+
+ /*
+ ** Get everything allocated and initialized... (almost just
+ ** like the ISA and EISA probes)
+ */
+ irq = mca_device_transform_irq(mdev, irq);
+ iobase = mca_device_transform_ioport(mdev, iobase);
+
+ if ((err = depca_common_init (iobase, &dev)))
+ goto out_unclaim;
+
+ dev->irq = irq;
+ dev->base_addr = iobase;
+ lp = dev->priv;
+ lp->depca_bus = DEPCA_BUS_MCA;
+ lp->adapter = depca_mca_adapter_type[mdev->index];
+ lp->mem_start = mem_start;
+
+ if ((err = depca_hw_init(dev, device)))
+ goto out_free;
+
+ return 0;
+
+ out_free:
+ free_netdev (dev);
+ release_region (iobase, DEPCA_TOTAL_SIZE);
+ out_unclaim:
+ mca_device_set_claim(mdev, 0);
+
+ return err;
+}
+#endif
+
+/*
+** ISA bus I/O device probe
+*/
+
+static void depca_platform_release (struct device *device)
+{
+ struct platform_device *pldev;
+
+ /* free device */
+ pldev = to_platform_device (device);
+ kfree (pldev);
+}
+
+static void __init depca_platform_probe (void)
+{
+ int i;
+ struct platform_device *pldev;
+
+ for (i = 0; depca_io_ports[i].iobase; i++) {
+ depca_io_ports[i].device = NULL;
+
+ /* if an address has been specified on the command
+ * line, use it (if valid) */
+ if (io && io != depca_io_ports[i].iobase)
+ continue;
+
+ if (!(pldev = kmalloc (sizeof (*pldev), GFP_KERNEL)))
+ continue;
+
+ memset (pldev, 0, sizeof (*pldev));
+ pldev->name = depca_string;
+ pldev->id = i;
+ pldev->dev.platform_data = (void *) depca_io_ports[i].iobase;
+ pldev->dev.release = depca_platform_release;
+ depca_io_ports[i].device = pldev;
+
+ if (platform_device_register (pldev)) {
+ kfree (pldev);
+ depca_io_ports[i].device = NULL;
+ continue;
+ }
+
+ if (!pldev->dev.driver) {
+ /* The driver was not bound to this device, there was
+ * no hardware at this address. Unregister it, as the
+ * release fuction will take care of freeing the
+ * allocated structure */
+
+ depca_io_ports[i].device = NULL;
+ platform_device_unregister (pldev);
+ }
+ }
+}
+
+static enum depca_type __init depca_shmem_probe (ulong *mem_start)
+{
+ u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES;
+ enum depca_type adapter = unknown;
+ int i;
+
+ for (i = 0; mem_base[i]; i++) {
+ *mem_start = mem ? mem : mem_base[i];
+ adapter = DepcaSignature (adapter_name, *mem_start);
+ if (adapter != unknown)
+ break;
+ }
+
+ return adapter;
+}
+
+static int __init depca_isa_probe (struct device *device)
+{
+ struct net_device *dev;
+ struct depca_private *lp;
+ u_long ioaddr, mem_start = 0;
+ enum depca_type adapter = unknown;
+ int status = 0;
+
+ ioaddr = (u_long) device->platform_data;
+
+ if ((status = depca_common_init (ioaddr, &dev)))
+ goto out;
+
+ adapter = depca_shmem_probe (&mem_start);
+
+ if (adapter == unknown) {
+ status = -ENODEV;
+ goto out_free;
+ }
+
+ dev->base_addr = ioaddr;
+ dev->irq = irq; /* Use whatever value the user gave
+ * us, and 0 if he didn't. */
+ lp = dev->priv;
+ lp->depca_bus = DEPCA_BUS_ISA;
+ lp->adapter = adapter;
+ lp->mem_start = mem_start;
+
+ if ((status = depca_hw_init(dev, device)))
+ goto out_free;
+
+ return 0;
+
+ out_free:
+ free_netdev (dev);
+ release_region (ioaddr, DEPCA_TOTAL_SIZE);
+ out:
+ return status;
+}
+
+/*
+** EISA callbacks from sysfs.
+*/
+
+#ifdef CONFIG_EISA
+static int __init depca_eisa_probe (struct device *device)
+{
+ struct eisa_device *edev;
+ struct net_device *dev;
+ struct depca_private *lp;
+ u_long ioaddr, mem_start;
+ int status = 0;
+
+ edev = to_eisa_device (device);
+ ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS;
+
+ if ((status = depca_common_init (ioaddr, &dev)))
+ goto out;
+
+ /* It would have been nice to get card configuration from the
+ * card. Unfortunately, this register is write-only (shares
+ * it's address with the ethernet prom)... As we don't parse
+ * the EISA configuration structures (yet... :-), just rely on
+ * the ISA probing to sort it out... */
+
+ depca_shmem_probe (&mem_start);
+
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ lp = dev->priv;
+ lp->depca_bus = DEPCA_BUS_EISA;
+ lp->adapter = edev->id.driver_data;
+ lp->mem_start = mem_start;
+
+ if ((status = depca_hw_init(dev, device)))
+ goto out_free;
+
+ return 0;
+
+ out_free:
+ free_netdev (dev);
+ release_region (ioaddr, DEPCA_TOTAL_SIZE);
+ out:
+ return status;
+}
+#endif
+
+static int __devexit depca_device_remove (struct device *device)
+{
+ struct net_device *dev;
+ struct depca_private *lp;
+ int bus;
+
+ dev = device->driver_data;
+ lp = dev->priv;
+
+ unregister_netdev (dev);
+ iounmap (lp->sh_mem);
+ release_mem_region (lp->mem_start, lp->mem_len);
+ release_region (dev->base_addr, DEPCA_TOTAL_SIZE);
+ bus = lp->depca_bus;
+ free_netdev (dev);
+
+ return 0;
+}
+
+/*
+** Look for a particular board name in the on-board Remote Diagnostics
+** and Boot (readb) ROM. This will also give us a clue to the network RAM
+** base address.
+*/
+static int __init DepcaSignature(char *name, u_long base_addr)
+{
+ u_int i, j, k;
+ void __iomem *ptr;
+ char tmpstr[16];
+ u_long prom_addr = base_addr + 0xc000;
+ u_long mem_addr = base_addr + 0x8000; /* 32KB */
+
+ /* Can't reserve the prom region, it is already marked as
+ * used, at least on x86. Instead, reserve a memory region a
+ * board would certainly use. If it works, go ahead. If not,
+ * run like hell... */
+
+ if (!request_mem_region (mem_addr, 16, depca_string))
+ return unknown;
+
+ /* Copy the first 16 bytes of ROM */
+
+ ptr = ioremap(prom_addr, 16);
+ if (ptr == NULL) {
+ printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr);
+ return unknown;
+ }
+ for (i = 0; i < 16; i++) {
+ tmpstr[i] = readb(ptr + i);
+ }
+ iounmap(ptr);
+
+ release_mem_region (mem_addr, 16);
+
+ /* Check if PROM contains a valid string */
+ for (i = 0; *depca_signature[i] != '\0'; i++) {
+ for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) {
+ if (depca_signature[i][k] == tmpstr[j]) { /* track signature */
+ k++;
+ } else { /* lost signature; begin search again */
+ k = 0;
+ }
+ }
+ if (k == strlen(depca_signature[i]))
+ break;
+ }
+
+ /* Check if name string is valid, provided there's no PROM */
+ if (name && *name && (i == unknown)) {
+ for (i = 0; *depca_signature[i] != '\0'; i++) {
+ if (strcmp(name, depca_signature[i]) == 0)
+ break;
+ }
+ }
+
+ return i;
+}
+
+/*
+** Look for a special sequence in the Ethernet station address PROM that
+** is common across all DEPCA products. Note that the original DEPCA needs
+** its ROM address counter to be initialized and enabled. Only enable
+** if the first address octet is a 0x08 - this minimises the chances of
+** messing around with some other hardware, but it assumes that this DEPCA
+** card initialized itself correctly.
+**
+** Search the Ethernet address ROM for the signature. Since the ROM address
+** counter can start at an arbitrary point, the search must include the entire
+** probe sequence length plus the (length_of_the_signature - 1).
+** Stop the search IMMEDIATELY after the signature is found so that the
+** PROM address counter is correctly positioned at the start of the
+** ethernet address for later read out.
+*/
+static int __init DevicePresent(u_long ioaddr)
+{
+ union {
+ struct {
+ u32 a;
+ u32 b;
+ } llsig;
+ char Sig[sizeof(u32) << 1];
+ }
+ dev;
+ short sigLength = 0;
+ s8 data;
+ s16 nicsr;
+ int i, j, status = 0;
+
+ data = inb(DEPCA_PROM); /* clear counter on DEPCA */
+ data = inb(DEPCA_PROM); /* read data */
+
+ if (data == 0x08) { /* Enable counter on DEPCA */
+ nicsr = inb(DEPCA_NICSR);
+ nicsr |= AAC;
+ outb(nicsr, DEPCA_NICSR);
+ }
+
+ dev.llsig.a = ETH_PROM_SIG;
+ dev.llsig.b = ETH_PROM_SIG;
+ sigLength = sizeof(u32) << 1;
+
+ for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) {
+ data = inb(DEPCA_PROM);
+ if (dev.Sig[j] == data) { /* track signature */
+ j++;
+ } else { /* lost signature; begin search again */
+ if (data == dev.Sig[0]) { /* rare case.... */
+ j = 1;
+ } else {
+ j = 0;
+ }
+ }
+ }
+
+ if (j != sigLength) {
+ status = -ENODEV; /* search failed */
+ }
+
+ return status;
+}
+
+/*
+** The DE100 and DE101 PROM accesses were made non-standard for some bizarre
+** reason: access the upper half of the PROM with x=0; access the lower half
+** with x=1.
+*/
+static int __init get_hw_addr(struct net_device *dev)
+{
+ u_long ioaddr = dev->base_addr;
+ struct depca_private *lp = dev->priv;
+ int i, k, tmp, status = 0;
+ u_short j, x, chksum;
+
+ x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0);
+
+ for (i = 0, k = 0, j = 0; j < 3; j++) {
+ k <<= 1;
+ if (k > 0xffff)
+ k -= 0xffff;
+
+ k += (u_char) (tmp = inb(DEPCA_PROM + x));
+ dev->dev_addr[i++] = (u_char) tmp;
+ k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8);
+ dev->dev_addr[i++] = (u_char) tmp;
+
+ if (k > 0xffff)
+ k -= 0xffff;
+ }
+ if (k == 0xffff)
+ k = 0;
+
+ chksum = (u_char) inb(DEPCA_PROM + x);
+ chksum |= (u_short) (inb(DEPCA_PROM + x) << 8);
+ if (k != chksum)
+ status = -1;
+
+ return status;
+}
+
+/*
+** Load a packet into the shared memory
+*/
+static int load_packet(struct net_device *dev, struct sk_buff *skb)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ int i, entry, end, len, status = 0;
+
+ entry = lp->tx_new; /* Ring around buffer number. */
+ end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask;
+ if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */
+ /*
+ ** Caution: the write order is important here... don't set up the
+ ** ownership rights until all the other information is in place.
+ */
+ if (end < entry) { /* wrapped buffer */
+ len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ;
+ memcpy_toio(lp->tx_buff[entry], skb->data, len);
+ memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len);
+ } else { /* linear buffer */
+ memcpy_toio(lp->tx_buff[entry], skb->data, skb->len);
+ }
+
+ /* set up the buffer descriptors */
+ len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
+ for (i = entry; i != end; i = (i+1) & lp->txRingMask) {
+ /* clean out flags */
+ writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base);
+ writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */
+ writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */
+ len -= TX_BUFF_SZ;
+ }
+ /* clean out flags */
+ writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base);
+ writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */
+ writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */
+
+ /* start of packet */
+ writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base);
+ /* end of packet */
+ writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base);
+
+ for (i = end; i != entry; --i) {
+ /* ownership of packet */
+ writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base);
+ if (i == 0)
+ i = lp->txRingMask + 1;
+ }
+ writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base);
+
+ lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */
+ } else {
+ status = -1;
+ }
+
+ return status;
+}
+
+static void depca_dbg_open(struct net_device *dev)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ u_long ioaddr = dev->base_addr;
+ struct depca_init *p = &lp->init_block;
+ int i;
+
+ if (depca_debug > 1) {
+ /* Do not copy the shadow init block into shared memory */
+ /* Debugging should not affect normal operation! */
+ /* The shadow init block will get copied across during InitRestartDepca */
+ printk("%s: depca open with irq %d\n", dev->name, dev->irq);
+ printk("Descriptor head addresses (CPU):\n");
+ printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring);
+ printk("Descriptor addresses (CPU):\nRX: ");
+ for (i = 0; i < lp->rxRingMask; i++) {
+ if (i < 3) {
+ printk("%p ", &lp->rx_ring[i].base);
+ }
+ }
+ printk("...%p\n", &lp->rx_ring[i].base);
+ printk("TX: ");
+ for (i = 0; i < lp->txRingMask; i++) {
+ if (i < 3) {
+ printk("%p ", &lp->tx_ring[i].base);
+ }
+ }
+ printk("...%p\n", &lp->tx_ring[i].base);
+ printk("\nDescriptor buffers (Device):\nRX: ");
+ for (i = 0; i < lp->rxRingMask; i++) {
+ if (i < 3) {
+ printk("0x%8.8x ", readl(&lp->rx_ring[i].base));
+ }
+ }
+ printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base));
+ printk("TX: ");
+ for (i = 0; i < lp->txRingMask; i++) {
+ if (i < 3) {
+ printk("0x%8.8x ", readl(&lp->tx_ring[i].base));
+ }
+ }
+ printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base));
+ printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start);
+ printk(" mode: 0x%4.4x\n", p->mode);
+ printk(" physical address: ");
+ for (i = 0; i < ETH_ALEN - 1; i++) {
+ printk("%2.2x:", p->phys_addr[i]);
+ }
+ printk("%2.2x\n", p->phys_addr[i]);
+ printk(" multicast hash table: ");
+ for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) {
+ printk("%2.2x:", p->mcast_table[i]);
+ }
+ printk("%2.2x\n", p->mcast_table[i]);
+ printk(" rx_ring at: 0x%8.8x\n", p->rx_ring);
+ printk(" tx_ring at: 0x%8.8x\n", p->tx_ring);
+ printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset);
+ printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen);
+ printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen);
+ outw(CSR2, DEPCA_ADDR);
+ printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA));
+ outw(CSR1, DEPCA_ADDR);
+ printk("%4.4x\n", inw(DEPCA_DATA));
+ outw(CSR3, DEPCA_ADDR);
+ printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA));
+ }
+
+ return;
+}
+
+/*
+** Perform IOCTL call functions here. Some are privileged operations and the
+** effective uid is checked in those cases.
+** All multicast IOCTLs will not work here and are for testing purposes only.
+*/
+static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct depca_private *lp = (struct depca_private *) dev->priv;
+ struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru;
+ int i, status = 0;
+ u_long ioaddr = dev->base_addr;
+ union {
+ u8 addr[(HASH_TABLE_LEN * ETH_ALEN)];
+ u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1];
+ u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2];
+ } tmp;
+ unsigned long flags;
+ void *buf;
+
+ switch (ioc->cmd) {
+ case DEPCA_GET_HWADDR: /* Get the hardware address */
+ for (i = 0; i < ETH_ALEN; i++) {
+ tmp.addr[i] = dev->dev_addr[i];
+ }
+ ioc->len = ETH_ALEN;
+ if (copy_to_user(ioc->data, tmp.addr, ioc->len))
+ return -EFAULT;
+ break;
+
+ case DEPCA_SET_HWADDR: /* Set the hardware address */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN))
+ return -EFAULT;
+ for (i = 0; i < ETH_ALEN; i++) {
+ dev->dev_addr[i] = tmp.addr[i];
+ }
+ netif_stop_queue(dev);
+ while (lp->tx_old != lp->tx_new)
+ cpu_relax(); /* Wait for the ring to empty */
+
+ STOP_DEPCA; /* Temporarily stop the depca. */
+ depca_init_ring(dev); /* Initialize the descriptor rings */
+ LoadCSRs(dev); /* Reload CSR3 */
+ InitRestartDepca(dev); /* Resume normal operation. */
+ netif_start_queue(dev); /* Unlock the TX ring */
+ break;
+
+ case DEPCA_SET_PROM: /* Set Promiscuous Mode */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ netif_stop_queue(dev);
+ while (lp->tx_old != lp->tx_new)
+ cpu_relax(); /* Wait for the ring to empty */
+
+ STOP_DEPCA; /* Temporarily stop the depca. */
+ depca_init_ring(dev); /* Initialize the descriptor rings */
+ lp->init_block.mode |= PROM; /* Set promiscuous mode */
+
+ LoadCSRs(dev); /* Reload CSR3 */
+ InitRestartDepca(dev); /* Resume normal operation. */
+ netif_start_queue(dev); /* Unlock the TX ring */
+ break;
+
+ case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ netif_stop_queue(dev);
+ while (lp->tx_old != lp->tx_new)
+ cpu_relax(); /* Wait for the ring to empty */
+
+ STOP_DEPCA; /* Temporarily stop the depca. */
+ depca_init_ring(dev); /* Initialize the descriptor rings */
+ lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */
+
+ LoadCSRs(dev); /* Reload CSR3 */
+ InitRestartDepca(dev); /* Resume normal operation. */
+ netif_start_queue(dev); /* Unlock the TX ring */
+ break;
+
+ case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */
+ if(!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ printk("%s: Boo!\n", dev->name);
+ break;
+
+ case DEPCA_GET_MCA: /* Get the multicast address table */
+ ioc->len = (HASH_TABLE_LEN >> 3);
+ if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len))
+ return -EFAULT;
+ break;
+
+ case DEPCA_SET_MCA: /* Set a multicast address */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ if (ioc->len >= HASH_TABLE_LEN)
+ return -EINVAL;
+ if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len))
+ return -EFAULT;
+ set_multicast_list(dev);
+ break;
+
+ case DEPCA_CLR_MCA: /* Clear all multicast addresses */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ set_multicast_list(dev);
+ break;
+
+ case DEPCA_MCA_EN: /* Enable pass all multicast addressing */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ set_multicast_list(dev);
+ break;
+
+ case DEPCA_GET_STATS: /* Get the driver statistics */
+ ioc->len = sizeof(lp->pktStats);
+ buf = kmalloc(ioc->len, GFP_KERNEL);
+ if(!buf)
+ return -ENOMEM;
+ spin_lock_irqsave(&lp->lock, flags);
+ memcpy(buf, &lp->pktStats, ioc->len);
+ spin_unlock_irqrestore(&lp->lock, flags);
+ if (copy_to_user(ioc->data, buf, ioc->len))
+ status = -EFAULT;
+ kfree(buf);
+ break;
+
+ case DEPCA_CLR_STATS: /* Zero out the driver statistics */
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ spin_lock_irqsave(&lp->lock, flags);
+ memset(&lp->pktStats, 0, sizeof(lp->pktStats));
+ spin_unlock_irqrestore(&lp->lock, flags);
+ break;
+
+ case DEPCA_GET_REG: /* Get the DEPCA Registers */
+ i = 0;
+ tmp.sval[i++] = inw(DEPCA_NICSR);
+ outw(CSR0, DEPCA_ADDR); /* status register */
+ tmp.sval[i++] = inw(DEPCA_DATA);
+ memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init));
+ ioc->len = i + sizeof(struct depca_init);
+ if (copy_to_user(ioc->data, tmp.addr, ioc->len))
+ return -EFAULT;
+ break;
+
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return status;
+}
+
+static int __init depca_module_init (void)
+{
+ int err = 0;
+
+#ifdef CONFIG_MCA
+ err = mca_register_driver (&depca_mca_driver);
+#endif
+#ifdef CONFIG_EISA
+ err |= eisa_driver_register (&depca_eisa_driver);
+#endif
+ err |= driver_register (&depca_isa_driver);
+ depca_platform_probe ();
+
+ return err;
+}
+
+static void __exit depca_module_exit (void)
+{
+ int i;
+#ifdef CONFIG_MCA
+ mca_unregister_driver (&depca_mca_driver);
+#endif
+#ifdef CONFIG_EISA
+ eisa_driver_unregister (&depca_eisa_driver);
+#endif
+ driver_unregister (&depca_isa_driver);
+
+ for (i = 0; depca_io_ports[i].iobase; i++) {
+ if (depca_io_ports[i].device) {
+ platform_device_unregister (depca_io_ports[i].device);
+ depca_io_ports[i].device = NULL;
+ }
+ }
+}
+
+module_init (depca_module_init);
+module_exit (depca_module_exit);