| /* 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/module.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.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/platform_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 platform_device *); |
| |
| static int __devexit depca_isa_remove(struct platform_device *pdev) |
| { |
| return depca_device_remove(&pdev->dev); |
| } |
| |
| static struct platform_driver depca_isa_driver = { |
| .probe = depca_isa_probe, |
| .remove = __devexit_p(depca_isa_remove), |
| .driver = { |
| .name = depca_string, |
| }, |
| }; |
| |
| /* |
| ** 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. */ |
| 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 netdev_tx_t depca_start_xmit(struct sk_buff *skb, |
| struct net_device *dev); |
| static irqreturn_t depca_interrupt(int irq, void *dev_id); |
| 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 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 const struct net_device_ops depca_netdev_ops = { |
| .ndo_open = depca_open, |
| .ndo_start_xmit = depca_start_xmit, |
| .ndo_stop = depca_close, |
| .ndo_set_multicast_list = set_multicast_list, |
| .ndo_do_ioctl = depca_ioctl, |
| .ndo_tx_timeout = depca_tx_timeout, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| 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 = netdev_priv(dev); |
| mem_start = lp->mem_start; |
| |
| if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown) |
| return -ENXIO; |
| |
| printk("%s: %s at 0x%04lx", |
| dev_name(device), 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); |
| printk("%pM", dev->dev_addr); |
| if (status != 0) { |
| printk(" which has an Ethernet PROM CRC error.\n"); |
| return -ENXIO; |
| } |
| |
| /* 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], dev_name(device)); |
| 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->netdev_ops = &depca_netdev_ops; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| |
| dev->mem_start = 0; |
| |
| dev_set_drvdata(device, 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 = netdev_priv(dev); |
| 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 = netdev_priv(dev); |
| 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 netdev_tx_t depca_start_xmit(struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| struct depca_private *lp = netdev_priv(dev); |
| u_long ioaddr = dev->base_addr; |
| int status = 0; |
| |
| /* Transmitter timeout, serious problems. */ |
| if (skb->len < 1) |
| goto out; |
| |
| if (skb_padto(skb, ETH_ZLEN)) |
| 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 = NETDEV_TX_LOCKED; |
| |
| out: |
| return status; |
| } |
| |
| /* |
| ** The DEPCA interrupt handler. |
| */ |
| static irqreturn_t depca_interrupt(int irq, void *dev_id) |
| { |
| 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 = netdev_priv(dev); |
| 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 = netdev_priv(dev); |
| 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. */ |
| dev->stats.rx_errors++; /* Update the error stats. */ |
| if (status & R_FRAM) |
| dev->stats.rx_frame_errors++; |
| if (status & R_OFLO) |
| dev->stats.rx_over_errors++; |
| if (status & R_CRC) |
| dev->stats.rx_crc_errors++; |
| if (status & R_BUFF) |
| dev->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); |
| 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->stats.rx_packets++; |
| dev->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); |
| dev->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 = netdev_priv(dev); |
| 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); |
| dev->stats.tx_errors++; |
| if (status & TMD3_RTRY) |
| dev->stats.tx_aborted_errors++; |
| if (status & TMD3_LCAR) |
| dev->stats.tx_carrier_errors++; |
| if (status & TMD3_LCOL) |
| dev->stats.tx_window_errors++; |
| if (status & TMD3_UFLO) |
| dev->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)) { |
| dev->stats.collisions++; |
| } else { |
| dev->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 = netdev_priv(dev); |
| 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 = netdev_priv(dev); |
| 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 = netdev_priv(dev); |
| 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; |
| } |
| |
| /* |
| ** Set or clear the multicast filter for this adaptor. |
| */ |
| static void set_multicast_list(struct net_device *dev) |
| { |
| struct depca_private *lp = netdev_priv(dev); |
| u_long ioaddr = dev->base_addr; |
| |
| 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 = netdev_priv(dev); |
| 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 */ |
| netdev_for_each_mc_addr(dmi, dev) { |
| addrs = dmi->dmi_addr; |
| 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", mdev->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 = netdev_priv(dev); |
| 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 __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; |
| |
| pldev = platform_device_alloc(depca_string, i); |
| if (!pldev) |
| continue; |
| |
| pldev->dev.platform_data = (void *) depca_io_ports[i].iobase; |
| depca_io_ports[i].device = pldev; |
| |
| if (platform_device_add(pldev)) { |
| depca_io_ports[i].device = NULL; |
| pldev->dev.platform_data = NULL; |
| platform_device_put(pldev); |
| 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; |
| pldev->dev.platform_data = 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 platform_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->dev.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 = netdev_priv(dev); |
| lp->depca_bus = DEPCA_BUS_ISA; |
| lp->adapter = adapter; |
| lp->mem_start = mem_start; |
| |
| if ((status = depca_hw_init(dev, &device->dev))) |
| 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) |
| { |
| enum depca_type adapter = unknown; |
| 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... */ |
| |
| adapter = depca_shmem_probe (&mem_start); |
| if (adapter == unknown) { |
| status = -ENODEV; |
| goto out_free; |
| } |
| |
| dev->base_addr = ioaddr; |
| dev->irq = irq; |
| lp = netdev_priv(dev); |
| 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 = dev_get_drvdata(device); |
| lp = netdev_priv(dev); |
| |
| 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 = netdev_priv(dev); |
| 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 = netdev_priv(dev); |
| int i, entry, end, len, status = NETDEV_TX_OK; |
| |
| 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 = NETDEV_TX_LOCKED; |
| } |
| |
| return status; |
| } |
| |
| static void depca_dbg_open(struct net_device *dev) |
| { |
| struct depca_private *lp = netdev_priv(dev); |
| 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: %pM\n", p->phys_addr); |
| 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 = netdev_priv(dev); |
| 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 |= platform_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 |
| platform_driver_unregister (&depca_isa_driver); |
| |
| for (i = 0; depca_io_ports[i].iobase; i++) { |
| if (depca_io_ports[i].device) { |
| depca_io_ports[i].device->dev.platform_data = NULL; |
| platform_device_unregister (depca_io_ports[i].device); |
| depca_io_ports[i].device = NULL; |
| } |
| } |
| } |
| |
| module_init (depca_module_init); |
| module_exit (depca_module_exit); |