^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* 8390.c: A general NS8390 ethernet driver core for linux. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) Written 1992-94 by Donald Becker.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Copyright 1993 United States Government as represented by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) Director, National Security Agency.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) This software may be used and distributed according to the terms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) of the GNU General Public License, incorporated herein by reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) The author may be reached as becker@scyld.com, or C/O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) Scyld Computing Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 410 Severn Ave., Suite 210
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Annapolis MD 21403
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) This is the chip-specific code for many 8390-based ethernet adaptors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) This is not a complete driver, it must be combined with board-specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) code such as ne.c, wd.c, 3c503.c, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) Seeing how at least eight drivers use this code, (not counting the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) PCMCIA ones either) it is easy to break some card by what seems like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) a simple innocent change. Please contact me or Donald if you think
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) you have found something that needs changing. -- PG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) Changelog:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) Paul Gortmaker : remove set_bit lock, other cleanups.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ei_block_input() for eth_io_copy_and_sum().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) Paul Gortmaker : exchange static int ei_pingpong for a #define,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) also add better Tx error handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) Paul Gortmaker : rewrite Rx overrun handling as per NS specs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) Alexey Kuznetsov : use the 8390's six bit hash multicast filter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) Paul Gortmaker : tweak ANK's above multicast changes a bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) Paul Gortmaker : update packet statistics for v2.1.x
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) Alan Cox : support arbitrary stupid port mappings on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 68K Macintosh. Support >16bit I/O spaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) Paul Gortmaker : add kmod support for auto-loading of the 8390
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) module by all drivers that require it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) Alan Cox : Spinlocking work, added 'BUG_83C690'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) Paul Gortmaker : Separate out Tx timeout code from Tx path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) Paul Gortmaker : Remove old unused single Tx buffer code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) Hayato Fujiwara : Add m32r support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) Paul Gortmaker : use skb_padto() instead of stack scratch area
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) Sources:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) The National Semiconductor LAN Databook, and the 3Com 3c503 databook.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/build_bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #include <linux/crc32.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define NS8390_CORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #include "8390.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define BUG_83C690
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* These are the operational function interfaces to board-specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) routines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) void reset_8390(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) Resets the board associated with DEV, including a hardware reset of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) the 8390. This is only called when there is a transmit timeout, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) it is always followed by 8390_init().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) void block_output(struct net_device *dev, int count, const unsigned char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int start_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) "page" value uses the 8390's 256-byte pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) Read the 4 byte, page aligned 8390 header. *If* there is a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) subsequent read, it will be of the rest of the packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) Read COUNT bytes from the packet buffer into the skb data area. Start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) reading from RING_OFFSET, the address as the 8390 sees it. This will always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) follow the read of the 8390 header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define ei_reset_8390 (ei_local->reset_8390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define ei_block_output (ei_local->block_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define ei_block_input (ei_local->block_input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define ei_get_8390_hdr (ei_local->get_8390_hdr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* Index to functions. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static void ei_tx_intr(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void ei_tx_err(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static void ei_receive(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static void ei_rx_overrun(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* Routines generic to NS8390-based boards. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int start_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static void do_set_multicast_list(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static void __NS8390_init(struct net_device *dev, int startp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static unsigned version_printed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int msg_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_RX_ERR |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) NETIF_MSG_TX_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) module_param(msg_enable, int, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * SMP and the 8390 setup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * The 8390 isn't exactly designed to be multithreaded on RX/TX. There is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * a page register that controls bank and packet buffer access. We guard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * this with ei_local->page_lock. Nobody should assume or set the page other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * than zero when the lock is not held. Lock holders must restore page 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * before unlocking. Even pure readers must take the lock to protect in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * page 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * To make life difficult the chip can also be very slow. We therefore can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * just use spinlocks. For the longer lockups we disable the irq the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * sits on and hold the lock. We must hold the lock because there is a dual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * processor case other than interrupts (get stats/set multicast list in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * parallel with each other and transmit).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * Note: in theory we can just disable the irq on the card _but_ there is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * enter lock, take the queued irq. So we waddle instead of flying.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * Finally by special arrangement for the purpose of being generally
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * annoying the transmit function is called bh atomic. That places
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * restrictions on the user context callers as disable_irq won't save
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * Additional explanation of problems with locking by Alan Cox:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * "The author (me) didn't use spin_lock_irqsave because the slowness of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * card means that approach caused horrible problems like losing serial data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * at 38400 baud on some chips. Remember many 8390 nics on PCI were ISA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * chips with FPGA front ends.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * Ok the logic behind the 8390 is very simple:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * Things to know
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * - IRQ delivery is asynchronous to the PCI bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * - Blocking the local CPU IRQ via spin locks was too slow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * - The chip has register windows needing locking work
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * So the path was once (I say once as people appear to have changed it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * in the mean time and it now looks rather bogus if the changes to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * disable_irq_nosync_irqsave are disabling the local IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Take the page lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * Mask the IRQ on chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * Disable the IRQ (but not mask locally- someone seems to have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * broken this with the lock validator stuff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * [This must be _nosync as the page lock may otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * deadlock us]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * Drop the page lock and turn IRQs back on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * At this point an existing IRQ may still be running but we can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * get a new one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * Take the lock (so we know the IRQ has terminated) but don't mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * the IRQs on the processor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * Set irqlock [for debug]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * Transmit (slow as ****)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * re-enable the IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * We have to use disable_irq because otherwise you will get delayed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * interrupts on the APIC bus deadlocking the transmit path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * Quite hairy but the chip simply wasn't designed for SMP and you can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * even ACK an interrupt without risking corrupting other parallel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * activities on the chip." [lkml, 25 Jul 2007]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * ei_open - Open/initialize the board.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * @dev: network device to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * This routine goes all-out, setting everything
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * up anew at each open, even though many of these registers should only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * need to be set once at boot.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static int __ei_open(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (dev->watchdog_timeo <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) dev->watchdog_timeo = TX_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * Grab the page lock so we own the register set, then call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * the init function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) __NS8390_init(dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /* Set the flag before we drop the lock, That way the IRQ arrives
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) after its set and we get no silly warnings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) netif_start_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ei_local->irqlock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * ei_close - shut down network device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * @dev: network device to close
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * Opposite of ei_open(). Only used when "ifconfig <devname> down" is done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int __ei_close(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * Hold the page lock during close
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) __NS8390_init(dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * ei_tx_timeout - handle transmit time out condition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * @dev: network device which has apparently fallen asleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * Called by kernel when device never acknowledges a transmit has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * completed (or failed) - i.e. never posted a Tx related interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static void __ei_tx_timeout(struct net_device *dev, unsigned int txqueue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int txsr, isr, tickssofar = jiffies - dev_trans_start(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) txsr = ei_inb(e8390_base+EN0_TSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) isr = ei_inb(e8390_base+EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) netdev_dbg(dev, "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) (txsr & ENTSR_ABT) ? "excess collisions." :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) (isr) ? "lost interrupt?" : "cable problem?",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) txsr, isr, tickssofar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!isr && !dev->stats.tx_packets) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* The 8390 probably hasn't gotten on the cable yet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ei_local->interface_num ^= 1; /* Try a different xcvr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* Ugly but a reset can be slow, yet must be protected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) disable_irq_nosync_lockdep(dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) spin_lock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Try to restart the card. Perhaps the user has fixed something. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) ei_reset_8390(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) __NS8390_init(dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) spin_unlock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) enable_irq_lockdep(dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * ei_start_xmit - begin packet transmission
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * @skb: packet to be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * @dev: network device to which packet is sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * Sends a packet to an 8390 network device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static netdev_tx_t __ei_start_xmit(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) int send_length = skb->len, output_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) char buf[ETH_ZLEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) char *data = skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (skb->len < ETH_ZLEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) memset(buf, 0, ETH_ZLEN); /* more efficient than doing just the needed bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) memcpy(buf, data, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) send_length = ETH_ZLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) data = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* Mask interrupts from the ethercard.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) SMP: We have to grab the lock here otherwise the IRQ handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) on another CPU can flip window and race the IRQ mask set. We end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) up trashing the mcast filter not disabling irqs if we don't lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) ei_outb_p(0x00, e8390_base + EN0_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * Slow phase with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) disable_irq_nosync_lockdep_irqsave(dev->irq, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) spin_lock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) ei_local->irqlock = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * We have two Tx slots available for use. Find the first free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * slot, and then perform some sanity checks. With two Tx bufs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * you get very close to transmitting back-to-back packets. With
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * only one Tx buf, the transmitter sits idle while you reload the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * card, leaving a substantial gap between each transmitted packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (ei_local->tx1 == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) output_page = ei_local->tx_start_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ei_local->tx1 = send_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if ((netif_msg_tx_queued(ei_local)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) ei_local->tx2 > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) netdev_dbg(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) "idle transmitter tx2=%d, lasttx=%d, txing=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) ei_local->tx2, ei_local->lasttx, ei_local->txing);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) } else if (ei_local->tx2 == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) output_page = ei_local->tx_start_page + TX_PAGES/2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) ei_local->tx2 = send_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if ((netif_msg_tx_queued(ei_local)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) ei_local->tx1 > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) netdev_dbg(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) ei_local->tx1, ei_local->lasttx, ei_local->txing);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) } else { /* We should never get here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) netif_dbg(ei_local, tx_err, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) "No Tx buffers free! tx1=%d tx2=%d last=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) ei_local->tx1, ei_local->tx2, ei_local->lasttx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) ei_local->irqlock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) spin_unlock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) enable_irq_lockdep_irqrestore(dev->irq, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return NETDEV_TX_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * Okay, now upload the packet and trigger a send if the transmitter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * isn't already sending. If it is busy, the interrupt handler will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * trigger the send later, upon receiving a Tx done interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) ei_block_output(dev, send_length, data, output_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (!ei_local->txing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) ei_local->txing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) NS8390_trigger_send(dev, send_length, output_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (output_page == ei_local->tx_start_page) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) ei_local->tx1 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ei_local->lasttx = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) ei_local->tx2 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) ei_local->lasttx = -2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ei_local->txqueue++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (ei_local->tx1 && ei_local->tx2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) netif_start_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* Turn 8390 interrupts back on. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) ei_local->irqlock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) spin_unlock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) enable_irq_lockdep_irqrestore(dev->irq, &flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) skb_tx_timestamp(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) dev_consume_skb_any(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) dev->stats.tx_bytes += send_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * ei_interrupt - handle the interrupts from an 8390
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * @irq: interrupt number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * @dev_id: a pointer to the net_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * Handle the ether interface interrupts. We pull packets from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) * the 8390 via the card specific functions and fire them at the networking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * stack. We also handle transmit completions and wake the transmit path if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * necessary. We also update the counters and do other housekeeping as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) * needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static irqreturn_t __ei_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct net_device *dev = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) int interrupts, nr_serviced = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * Protect the irq test too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) spin_lock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (ei_local->irqlock) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * This might just be an interrupt for a PCI device sharing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * this line
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) netdev_err(dev, "Interrupted while interrupts are masked! isr=%#2x imr=%#2x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ei_inb_p(e8390_base + EN0_ISR),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ei_inb_p(e8390_base + EN0_IMR));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) spin_unlock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /* Change to page 0 and read the intr status reg. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) netif_dbg(ei_local, intr, dev, "interrupt(isr=%#2.2x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ei_inb_p(e8390_base + EN0_ISR));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /* !!Assumption!! -- we stay in page 0. Don't break this. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) while ((interrupts = ei_inb_p(e8390_base + EN0_ISR)) != 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) ++nr_serviced < MAX_SERVICE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (!netif_running(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) netdev_warn(dev, "interrupt from stopped card\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* rmk - acknowledge the interrupts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ei_outb_p(interrupts, e8390_base + EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) interrupts = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (interrupts & ENISR_OVER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) ei_rx_overrun(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /* Got a good (?) packet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) ei_receive(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /* Push the next to-transmit packet through. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (interrupts & ENISR_TX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) ei_tx_intr(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) else if (interrupts & ENISR_TX_ERR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) ei_tx_err(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (interrupts & ENISR_COUNTERS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) dev->stats.rx_frame_errors += ei_inb_p(e8390_base + EN0_COUNTER0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) dev->stats.rx_crc_errors += ei_inb_p(e8390_base + EN0_COUNTER1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) dev->stats.rx_missed_errors += ei_inb_p(e8390_base + EN0_COUNTER2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) ei_outb_p(ENISR_COUNTERS, e8390_base + EN0_ISR); /* Ack intr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /* Ignore any RDC interrupts that make it back to here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (interrupts & ENISR_RDC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ei_outb_p(ENISR_RDC, e8390_base + EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (interrupts && (netif_msg_intr(ei_local))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (nr_serviced >= MAX_SERVICE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /* 0xFF is valid for a card removal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (interrupts != 0xFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) netdev_warn(dev, "Too much work at interrupt, status %#2.2x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) interrupts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) ei_outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) netdev_warn(dev, "unknown interrupt %#2x\n", interrupts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) ei_outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) spin_unlock(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return IRQ_RETVAL(nr_serviced > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) #ifdef CONFIG_NET_POLL_CONTROLLER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) static void __ei_poll(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) disable_irq(dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) __ei_interrupt(dev->irq, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) enable_irq(dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * ei_tx_err - handle transmitter error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * @dev: network device which threw the exception
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * A transmitter error has happened. Most likely excess collisions (which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * is a fairly normal condition). If the error is one where the Tx will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * have been aborted, we try and send another one right away, instead of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * letting the failed packet sit and collect dust in the Tx buffer. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * is a much better solution as it avoids kernel based Tx timeouts, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * an unnecessary card reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * Called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) static void ei_tx_err(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /* ei_local is used on some platforms via the EI_SHIFT macro */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct ei_device *ei_local __maybe_unused = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) unsigned char txsr = ei_inb_p(e8390_base+EN0_TSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) #ifdef VERBOSE_ERROR_DUMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) netdev_dbg(dev, "transmitter error (%#2x):", txsr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (txsr & ENTSR_ABT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) pr_cont(" excess-collisions ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (txsr & ENTSR_ND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) pr_cont(" non-deferral ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) if (txsr & ENTSR_CRS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) pr_cont(" lost-carrier ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (txsr & ENTSR_FU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) pr_cont(" FIFO-underrun ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) if (txsr & ENTSR_CDH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) pr_cont(" lost-heartbeat ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) pr_cont("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) ei_outb_p(ENISR_TX_ERR, e8390_base + EN0_ISR); /* Ack intr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (tx_was_aborted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) ei_tx_intr(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (txsr & ENTSR_CRS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) dev->stats.tx_carrier_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) if (txsr & ENTSR_CDH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) dev->stats.tx_heartbeat_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (txsr & ENTSR_OWC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) dev->stats.tx_window_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) * ei_tx_intr - transmit interrupt handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) * @dev: network device for which tx intr is handled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * We have finished a transmit: check for errors and then trigger the next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * packet to be sent. Called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static void ei_tx_intr(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) int status = ei_inb(e8390_base + EN0_TSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) ei_outb_p(ENISR_TX, e8390_base + EN0_ISR); /* Ack intr. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * There are two Tx buffers, see which one finished, and trigger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * the send of another one if it exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ei_local->txqueue--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (ei_local->tx1 < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) if (ei_local->lasttx != 1 && ei_local->lasttx != -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) pr_err("%s: bogus last_tx_buffer %d, tx1=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) ei_local->name, ei_local->lasttx, ei_local->tx1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) ei_local->tx1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if (ei_local->tx2 > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) ei_local->txing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) netif_trans_update(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ei_local->tx2 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) ei_local->lasttx = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) ei_local->lasttx = 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) ei_local->txing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) } else if (ei_local->tx2 < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (ei_local->lasttx != 2 && ei_local->lasttx != -2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) pr_err("%s: bogus last_tx_buffer %d, tx2=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ei_local->name, ei_local->lasttx, ei_local->tx2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) ei_local->tx2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) if (ei_local->tx1 > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) ei_local->txing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) netif_trans_update(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) ei_local->tx1 = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) ei_local->lasttx = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) ei_local->lasttx = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) ei_local->txing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) } /* else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) ei_local->lasttx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) /* Minimize Tx latency: update the statistics after we restart TXing. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) if (status & ENTSR_COL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) dev->stats.collisions++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (status & ENTSR_PTX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) dev->stats.tx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) if (status & ENTSR_ABT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) dev->stats.tx_aborted_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) dev->stats.collisions += 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (status & ENTSR_CRS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) dev->stats.tx_carrier_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (status & ENTSR_FU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) dev->stats.tx_fifo_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (status & ENTSR_CDH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) dev->stats.tx_heartbeat_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (status & ENTSR_OWC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) dev->stats.tx_window_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) * ei_receive - receive some packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * @dev: network device with which receive will be run
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * We have a good packet(s), get it/them out of the buffers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * Called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) static void ei_receive(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) unsigned char rxing_page, this_frame, next_frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) unsigned short current_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) int rx_pkt_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) struct e8390_pkt_hdr rx_frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) int num_rx_pages = ei_local->stop_page-ei_local->rx_start_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) while (++rx_pkt_count < 10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) int pkt_len, pkt_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) /* Get the rx page (incoming packet pointer). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) ei_outb_p(E8390_NODMA+E8390_PAGE1, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) rxing_page = ei_inb_p(e8390_base + EN1_CURPAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /* Remove one frame from the ring. Boundary is always a page behind. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) this_frame = ei_inb_p(e8390_base + EN0_BOUNDARY) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) if (this_frame >= ei_local->stop_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) this_frame = ei_local->rx_start_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) /* Someday we'll omit the previous, iff we never get this message.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) (There is at least one clone claimed to have a problem.)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) Keep quiet if it looks like a card removal. One problem here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) is that some clones crash in roughly the same way.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if ((netif_msg_rx_status(ei_local)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) this_frame != ei_local->current_page &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) (this_frame != 0x0 || rxing_page != 0xFF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) netdev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) "mismatched read page pointers %2x vs %2x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) this_frame, ei_local->current_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (this_frame == rxing_page) /* Read all the frames? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) break; /* Done for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) current_offset = this_frame << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) ei_get_8390_hdr(dev, &rx_frame, this_frame);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) pkt_stat = rx_frame.status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) next_frame = this_frame + 1 + ((pkt_len+4)>>8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /* Check for bogosity warned by 3c503 book: the status byte is never
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) written. This happened a lot during testing! This code should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) cleaned up someday. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) if (rx_frame.next != next_frame &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) rx_frame.next != next_frame + 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) rx_frame.next != next_frame - num_rx_pages &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) rx_frame.next != next_frame + 1 - num_rx_pages) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) ei_local->current_page = rxing_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) ei_outb(ei_local->current_page-1, e8390_base+EN0_BOUNDARY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) dev->stats.rx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) if (pkt_len < 60 || pkt_len > 1518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) netif_dbg(ei_local, rx_status, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) "bogus packet size: %d, status=%#2x nxpg=%#2x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) rx_frame.count, rx_frame.status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) rx_frame.next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) dev->stats.rx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) dev->stats.rx_length_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) } else if ((pkt_stat & 0x0F) == ENRSR_RXOK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) skb = netdev_alloc_skb(dev, pkt_len + 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) if (skb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) netif_err(ei_local, rx_err, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) "Couldn't allocate a sk_buff of size %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) pkt_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) dev->stats.rx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) skb_reserve(skb, 2); /* IP headers on 16 byte boundaries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) skb_put(skb, pkt_len); /* Make room */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) skb->protocol = eth_type_trans(skb, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) if (!skb_defer_rx_timestamp(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) netif_rx(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) dev->stats.rx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) dev->stats.rx_bytes += pkt_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (pkt_stat & ENRSR_PHY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) dev->stats.multicast++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) netif_err(ei_local, rx_err, dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) "bogus packet: status=%#2x nxpg=%#2x size=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) rx_frame.status, rx_frame.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) rx_frame.count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) dev->stats.rx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* NB: The NIC counts CRC, frame and missed errors. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (pkt_stat & ENRSR_FO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) dev->stats.rx_fifo_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) next_frame = rx_frame.next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /* This _should_ never happen: it's here for avoiding bad clones. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) if (next_frame >= ei_local->stop_page) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) netdev_notice(dev, "next frame inconsistency, %#2x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) next_frame);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) next_frame = ei_local->rx_start_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) ei_local->current_page = next_frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) ei_outb_p(next_frame-1, e8390_base+EN0_BOUNDARY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) /* We used to also ack ENISR_OVER here, but that would sometimes mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) a real overrun, leaving the 8390 in a stopped state with rec'vr off. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) ei_outb_p(ENISR_RX+ENISR_RX_ERR, e8390_base+EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * ei_rx_overrun - handle receiver overrun
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) * @dev: network device which threw exception
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * We have a receiver overrun: we have to kick the 8390 to get it started
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * again. Problem is that you have to kick it exactly as NS prescribes in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) * the updated datasheets, or "the NIC may act in an unpredictable manner."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) * This includes causing "the NIC to defer indefinitely when it is stopped
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) * on a busy network." Ugh.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) * Called with lock held. Don't call this with the interrupts off or your
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) * computer will hate you - it takes 10ms or so.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) static void ei_rx_overrun(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) unsigned char was_txing, must_resend = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) /* ei_local is used on some platforms via the EI_SHIFT macro */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) struct ei_device *ei_local __maybe_unused = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) * Record whether a Tx was in progress and then issue the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) * stop command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) was_txing = ei_inb_p(e8390_base+E8390_CMD) & E8390_TRANS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) netif_dbg(ei_local, rx_err, dev, "Receiver overrun\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) dev->stats.rx_over_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) * Early datasheets said to poll the reset bit, but now they say that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * it "is not a reliable indicator and subsequently should be ignored."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * We wait at least 10ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) mdelay(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) * Reset RBCR[01] back to zero as per magic incantation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) ei_outb_p(0x00, e8390_base+EN0_RCNTLO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) ei_outb_p(0x00, e8390_base+EN0_RCNTHI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * See if any Tx was interrupted or not. According to NS, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * step is vital, and skipping it will cause no end of havoc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) if (was_txing) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) unsigned char tx_completed = ei_inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) if (!tx_completed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) must_resend = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * Have to enter loopback mode and then restart the NIC before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * you are allowed to slurp packets up off the ring.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) ei_outb_p(E8390_TXOFF, e8390_base + EN0_TXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) ei_outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) * Clear the Rx ring of all the debris, and ack the interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) ei_receive(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) ei_outb_p(ENISR_OVER, e8390_base+EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * Leave loopback mode, and resend any packet that got stopped.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) ei_outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (must_resend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) ei_outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * Collect the stats. This is called unlocked and from several contexts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) static struct net_device_stats *__ei_get_stats(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) unsigned long ioaddr = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) /* If the card is stopped, just return the present stats. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) if (!netif_running(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) return &dev->stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) /* Read the counter registers, assuming we are in page 0. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) dev->stats.rx_frame_errors += ei_inb_p(ioaddr + EN0_COUNTER0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) dev->stats.rx_crc_errors += ei_inb_p(ioaddr + EN0_COUNTER1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) dev->stats.rx_missed_errors += ei_inb_p(ioaddr + EN0_COUNTER2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) return &dev->stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) * Form the 64 bit 8390 multicast table from the linked list of addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) * associated with this dev structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static inline void make_mc_bits(u8 *bits, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct netdev_hw_addr *ha;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) netdev_for_each_mc_addr(ha, dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) u32 crc = ether_crc(ETH_ALEN, ha->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) * The 8390 uses the 6 most significant bits of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * CRC to index the multicast table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) bits[crc>>29] |= (1<<((crc>>26)&7));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) * do_set_multicast_list - set/clear multicast filter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) * @dev: net device for which multicast filter is adjusted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * Set or clear the multicast filter for this adaptor. May be called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * from a BH in 2.1.x. Must be called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) static void do_set_multicast_list(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) memset(ei_local->mcfilter, 0, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) if (!netdev_mc_empty(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) make_mc_bits(ei_local->mcfilter, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) memset(ei_local->mcfilter, 0xFF, 8); /* mcast set to accept-all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) * DP8390 manuals don't specify any magic sequence for altering
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) * the multicast regs on an already running card. To be safe, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) * ensure multicast mode is off prior to loading up the new hash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) * table. If this proves to be not enough, we can always resort
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) * to stopping the NIC, loading the table and then restarting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) * Bug Alert! The MC regs on the SMC 83C690 (SMC Elite and SMC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) * Elite16) appear to be write-only. The NS 8390 data sheet lists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * them as r/w so this is a bug. The SMC 83C790 (SMC Ultra and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) * Ultra32 EISA) appears to have this bug fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) if (netif_running(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) ei_outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) ei_outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) #ifndef BUG_83C690
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (ei_inb_p(e8390_base + EN1_MULT_SHIFT(i)) != ei_local->mcfilter[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) netdev_err(dev, "Multicast filter read/write mismap %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) ei_outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (dev->flags&IFF_PROMISC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) ei_outb_p(E8390_RXCONFIG | 0x18, e8390_base + EN0_RXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) ei_outb_p(E8390_RXCONFIG | 0x08, e8390_base + EN0_RXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) * Called without lock held. This is invoked from user context and may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) * be parallel to just about everything else. Its also fairly quick and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) * not called too often. Must protect against both bh and irq users
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) static void __ei_set_multicast_list(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) spin_lock_irqsave(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) do_set_multicast_list(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) spin_unlock_irqrestore(&ei_local->page_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) * ethdev_setup - init rest of 8390 device struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) * @dev: network device structure to init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) * Initialize the rest of the 8390 device structure. Do NOT __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) * this, as it is used by 8390 based modular drivers too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) static void ethdev_setup(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) ether_setup(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) spin_lock_init(&ei_local->page_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) ei_local->msg_enable = netif_msg_init(msg_enable, default_msg_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (netif_msg_drv(ei_local) && (version_printed++ == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) pr_info("%s", version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) * alloc_ei_netdev - alloc_etherdev counterpart for 8390
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) * @size: extra bytes to allocate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) * Allocate 8390-specific net_device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) static struct net_device *____alloc_ei_netdev(int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) return alloc_netdev(sizeof(struct ei_device) + size, "eth%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) NET_NAME_UNKNOWN, ethdev_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) /* This page of functions should be 8390 generic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) /* Follow National Semi's recommendations for initializing the "NIC". */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) * NS8390_init - initialize 8390 hardware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) * @dev: network device to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) * @startp: boolean. non-zero value to initiate chip processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) * Must be called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) static void __NS8390_init(struct net_device *dev, int startp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) struct ei_device *ei_local = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) int endcfg = ei_local->word16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) ? (0x48 | ENDCFG_WTS | (ei_local->bigendian ? ENDCFG_BOS : 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) : 0x48;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) BUILD_BUG_ON(sizeof(struct e8390_pkt_hdr) != 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) /* Follow National Semi's recommendations for initing the DP83902. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) ei_outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) /* Clear the remote byte count registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) ei_outb_p(0x00, e8390_base + EN0_RCNTLO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) ei_outb_p(0x00, e8390_base + EN0_RCNTHI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) /* Set to monitor and loopback mode -- this is vital!. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) ei_outb_p(E8390_RXOFF, e8390_base + EN0_RXCR); /* 0x20 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) ei_outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) /* Set the transmit page and receive ring. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) ei_outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) ei_local->tx1 = ei_local->tx2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) ei_outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) ei_outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) ei_outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) /* Clear the pending interrupts and mask. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) ei_outb_p(0xFF, e8390_base + EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) ei_outb_p(0x00, e8390_base + EN0_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /* Copy the station address into the DS8390 registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) ei_outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) for (i = 0; i < 6; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) ei_outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if ((netif_msg_probe(ei_local)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) ei_inb_p(e8390_base + EN1_PHYS_SHIFT(i)) != dev->dev_addr[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) netdev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) "Hw. address read/write mismap %d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) ei_outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) ei_local->tx1 = ei_local->tx2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) ei_local->txing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) if (startp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) ei_outb_p(0xff, e8390_base + EN0_ISR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) ei_outb_p(ENISR_ALL, e8390_base + EN0_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) ei_outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) ei_outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR); /* xmit on. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) /* 3c503 TechMan says rxconfig only after the NIC is started. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) ei_outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR); /* rx on, */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) do_set_multicast_list(dev); /* (re)load the mcast table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) /* Trigger a transmit start, assuming the length is valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) Always called with the page lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) int start_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) unsigned long e8390_base = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) struct ei_device *ei_local __attribute((unused)) = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) ei_outb_p(E8390_NODMA+E8390_PAGE0, e8390_base+E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (ei_inb_p(e8390_base + E8390_CMD) & E8390_TRANS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) netdev_warn(dev, "trigger_send() called with the transmitter busy\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) ei_outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) ei_outb_p(length >> 8, e8390_base + EN0_TCNTHI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) ei_outb_p(start_page, e8390_base + EN0_TPSR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) ei_outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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