^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* mac89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) Written 1996 by Russell Nelson, with reference to skeleton.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) written 1993-1994 by Donald Becker.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) This software may be used and distributed according to the terms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) of the GNU General Public License, incorporated herein by reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) The author may be reached at nelson@crynwr.com, Crynwr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) Software, 11 Grant St., Potsdam, NY 13676
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) Changelog:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Mike Cruse : mcruse@cti-ltd.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) : Changes for Linux 2.0 compatibility.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) : Added dev_id parameter in net_interrupt(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) : request_irq() and free_irq(). Just NULL for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) : in net_open() and net_close() so kerneld would know
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) : that the module is in use and wouldn't eject the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) : driver prematurely.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) : as an example. Disabled autoprobing in init_module(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) : not a good thing to do to other devices while Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) : is running from all accounts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) Alan Cox : Removed 1.2 support, added 2.1 extra counters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) David Huggins-Daines <dhd@debian.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) Split this off into mac89x0.c, and gutted it of all parts which are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) not relevant to the existing CS8900 cards on the Macintosh
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) (i.e. basically the Daynaport CS and LC cards). To be precise:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Removed all the media-detection stuff, because these cards are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) TP-only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * Lobotomized the ISA interrupt bogosity, because these cards use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) a hardwired NuBus interrupt and a magic ISAIRQ value in the card.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * Basically eliminated everything not relevant to getting the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) cards minimally functioning on the Macintosh.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) I might add that these cards are badly designed even from the Mac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) standpoint, in that Dayna, in their infinite wisdom, used NuBus slot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) I/O space and NuBus interrupts for these cards, but neglected to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) provide anything even remotely resembling a NuBus ROM. Therefore we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) have to probe for them in a brain-damaged ISA-like fashion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) check kmalloc and release the allocated memory on failure in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) mac89x0_probe and in init_module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) use local_irq_{save,restore}(flags) in net_get_stat, not just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) local_irq_{dis,en}able()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static const char version[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) "cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) Sources:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) Crynwr packet driver epktisa.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) Crystal Semiconductor data sheets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #include <linux/nubus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #include <asm/hwtest.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #include <asm/macints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #include "cs89x0.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static int debug = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) module_param(debug, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) MODULE_PARM_DESC(debug, "debug message level");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* Information that need to be kept for each board. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct net_local {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int msg_enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int chip_type; /* one of: CS8900, CS8920, CS8920M */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) char chip_revision; /* revision letter of the chip ('A'...) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int send_cmd; /* the propercommand used to send a packet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int rx_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int curr_rx_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int send_underrun; /* keep track of how many underruns in a row we get */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Index to functions, as function prototypes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static int net_open(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static irqreturn_t net_interrupt(int irq, void *dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static void set_multicast_list(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static void net_rx(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int net_close(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct net_device_stats *net_get_stats(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int set_mac_address(struct net_device *dev, void *addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* For reading/writing registers ISA-style */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) readreg_io(struct net_device *dev, int portno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return swab16(nubus_readw(dev->base_addr + DATA_PORT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) writereg_io(struct net_device *dev, int portno, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) nubus_writew(swab16(value), dev->base_addr + DATA_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* These are for reading/writing registers in shared memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) readreg(struct net_device *dev, int portno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return swab16(nubus_readw(dev->mem_start + portno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) writereg(struct net_device *dev, int portno, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) nubus_writew(swab16(value), dev->mem_start + portno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static const struct net_device_ops mac89x0_netdev_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .ndo_open = net_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) .ndo_stop = net_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .ndo_start_xmit = net_send_packet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .ndo_get_stats = net_get_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .ndo_set_rx_mode = set_multicast_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .ndo_set_mac_address = set_mac_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .ndo_validate_addr = eth_validate_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* Probe for the CS8900 card in slot E. We won't bother looking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) anywhere else until we have a really good reason to do so. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int mac89x0_device_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct net_local *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) int i, slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) unsigned rev_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) unsigned long ioaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) unsigned short sig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) int err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct nubus_rsrc *fres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) dev = alloc_etherdev(sizeof(struct net_local));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* We might have to parameterize this later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) slot = 0xE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Get out now if there's a real NuBus card in slot E */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) for_each_func_rsrc(fres)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (fres->board->slot == slot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) /* The pseudo-ISA bits always live at offset 0x300 (gee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) wonder why...) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ioaddr = (unsigned long)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) nubus_slot_addr(slot) | (((slot&0xf) << 20) + DEFAULTIOBASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int card_present;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) card_present = (hwreg_present((void *)ioaddr + 4) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) hwreg_present((void *)ioaddr + DATA_PORT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (!card_present)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) nubus_writew(0, ioaddr + ADD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) sig = nubus_readw(ioaddr + DATA_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (sig != swab16(CHIP_EISA_ID_SIG))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) SET_NETDEV_DEV(dev, &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* Initialize the net_device structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) lp->msg_enable = netif_msg_init(debug, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Fill in the 'dev' fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dev->base_addr = ioaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) dev->mem_start = (unsigned long)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) nubus_slot_addr(slot) | (((slot&0xf) << 20) + MMIOBASE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) dev->mem_end = dev->mem_start + 0x1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) /* Turn on shared memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) writereg_io(dev, PP_BusCTL, MEMORY_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /* get the chip type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rev_type = readreg(dev, PRODUCT_ID_ADD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) lp->chip_type = rev_type &~ REVISON_BITS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /* Check the chip type and revision in order to set the correct send command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) CS8920 revision C and CS8900 revision F can use the faster send. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) lp->send_cmd = TX_AFTER_381;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) lp->send_cmd = TX_NOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) lp->send_cmd = TX_NOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) netif_dbg(lp, drv, dev, "%s", version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) pr_info("cs89%c0%s rev %c found at %#8lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) lp->chip_type == CS8900 ? '0' : '2',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) lp->chip_type == CS8920M ? "M" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) lp->chip_revision, dev->base_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /* Try to read the MAC address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if ((readreg(dev, PP_SelfST) & (EEPROM_PRESENT | EEPROM_OK)) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) pr_info("No EEPROM, giving up now.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) goto out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) for (i = 0; i < ETH_ALEN; i += 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Big-endian (why??!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) unsigned short s = readreg(dev, PP_IA + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) dev->dev_addr[i] = s >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) dev->dev_addr[i+1] = s & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev->irq = SLOT2IRQ(slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /* print the IRQ and ethernet address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) pr_info("MAC %pM, IRQ %d\n", dev->dev_addr, dev->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) dev->netdev_ops = &mac89x0_netdev_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) err = register_netdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) goto out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) platform_set_drvdata(pdev, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) out1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) nubus_writew(0, dev->base_addr + ADD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) free_netdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /* Open/initialize the board. This is called (in the current kernel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) sometime after booting when the 'ifconfig' program is run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) This routine should set everything up anew at each open, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) registers that "should" only need to be set once at boot, so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) there is non-reboot way to recover if something goes wrong.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) net_open(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) struct net_local *lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /* Disable the interrupt for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Grab the interrupt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (request_irq(dev->irq, net_interrupt, 0, "cs89x0", dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* Set up the IRQ - Apparently magic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (lp->chip_type == CS8900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) writereg(dev, PP_CS8900_ISAINT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) writereg(dev, PP_CS8920_ISAINT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) /* set the Ethernet address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) for (i=0; i < ETH_ALEN/2; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /* Turn on both receive and transmit operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* Receive only error free packets addressed to this card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) lp->rx_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /* now that we've got our act together, enable everything */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) netif_start_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static netdev_tx_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) net_send_packet(struct sk_buff *skb, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct net_local *lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) netif_dbg(lp, tx_queued, dev, "sent %d byte packet of type %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) skb->len, skb->data[ETH_ALEN + ETH_ALEN] << 8 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) skb->data[ETH_ALEN + ETH_ALEN + 1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) /* keep the upload from being interrupted, since we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) ask the chip to start transmitting before the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) whole packet has been completely uploaded. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* initiate a transmit sequence */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) writereg(dev, PP_TxCMD, lp->send_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) writereg(dev, PP_TxLength, skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) /* Test to see if the chip has allocated memory for the packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /* Gasp! It hasn't. But that shouldn't happen since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) we're waiting for TxOk, so return 1 and requeue this packet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return NETDEV_TX_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* Write the contents of the packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) skb_copy_from_linear_data(skb, (void *)(dev->mem_start + PP_TxFrame),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) skb->len+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) dev_kfree_skb (skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* The typical workload of the driver:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) Handle the network interface interrupts. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static irqreturn_t net_interrupt(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct net_device *dev = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct net_local *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int ioaddr, status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) ioaddr = dev->base_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /* we MUST read all the events out of the ISQ, otherwise we'll never
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) get interrupted again. As a consequence, we can't have any limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) on the number of times we loop in the interrupt handler. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) hardware guarantees that eventually we'll run out of events. Of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) course, if you're on a slow machine, and packets are arriving
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) faster than you can read them off, you're screwed. Hasta la
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) vista, baby! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) while ((status = swab16(nubus_readw(dev->base_addr + ISQ_PORT)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) netif_dbg(lp, intr, dev, "status=%04x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) switch(status & ISQ_EVENT_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) case ISQ_RECEIVER_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /* Got a packet(s). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) net_rx(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) case ISQ_TRANSMITTER_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) dev->stats.tx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if ((status & TX_OK) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (status & TX_LOST_CRS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) dev->stats.tx_carrier_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (status & TX_SQE_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) dev->stats.tx_heartbeat_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (status & TX_LATE_COL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) dev->stats.tx_window_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (status & TX_16_COL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) dev->stats.tx_aborted_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) case ISQ_BUFFER_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (status & READY_FOR_TX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /* we tried to transmit a packet earlier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) but inexplicably ran out of buffers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) That shouldn't happen since we only ever
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) load one packet. Shrug. Do the right
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) thing anyway. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (status & TX_UNDERRUN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) netif_dbg(lp, tx_err, dev, "transmit underrun\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) lp->send_underrun++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) case ISQ_RX_MISS_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) dev->stats.rx_missed_errors += (status >> 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) case ISQ_TX_COL_EVENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) dev->stats.collisions += (status >> 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) break;
^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) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) /* We have a good packet(s), get it/them out of the buffers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) net_rx(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct net_local *lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) int status, length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) status = readreg(dev, PP_RxStatus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if ((status & RX_OK) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) dev->stats.rx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (status & RX_RUNT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) dev->stats.rx_length_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (status & RX_EXTRA_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) dev->stats.rx_length_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if ((status & RX_CRC_ERROR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) !(status & (RX_EXTRA_DATA|RX_RUNT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) /* per str 172 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) dev->stats.rx_crc_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (status & RX_DRIBBLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) dev->stats.rx_frame_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) length = readreg(dev, PP_RxLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* Malloc up new buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) skb = alloc_skb(length, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (skb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) dev->stats.rx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) skb_put(skb, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) skb_copy_to_linear_data(skb, (void *)(dev->mem_start + PP_RxFrame),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) netif_dbg(lp, rx_status, dev, "received %d byte packet of type %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) length, skb->data[ETH_ALEN + ETH_ALEN] << 8 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) skb->data[ETH_ALEN + ETH_ALEN + 1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) skb->protocol=eth_type_trans(skb,dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) netif_rx(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) dev->stats.rx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) dev->stats.rx_bytes += length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* The inverse routine to net_open(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) net_close(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) writereg(dev, PP_RxCFG, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) writereg(dev, PP_TxCFG, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) writereg(dev, PP_BufCFG, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) writereg(dev, PP_BusCTL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) free_irq(dev->irq, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) /* Update the statistics here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /* Get the current statistics. This may be called with the card open or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) closed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static struct net_device_stats *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) net_get_stats(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) /* Update the statistics from the device registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) return &dev->stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) static void set_multicast_list(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct net_local *lp = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if(dev->flags&IFF_PROMISC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) lp->rx_mode = RX_ALL_ACCEPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) } else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /* The multicast-accept list is initialized to accept-all, and we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) rely on higher-level filtering for now. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) lp->rx_mode = RX_MULTCAST_ACCEPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) lp->rx_mode = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static int set_mac_address(struct net_device *dev, void *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) struct sockaddr *saddr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (!is_valid_ether_addr(saddr->sa_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) return -EADDRNOTAVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) netdev_info(dev, "Setting MAC address to %pM\n", dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) /* set the Ethernet address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) for (i=0; i < ETH_ALEN/2; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) static int mac89x0_device_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) struct net_device *dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) unregister_netdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) nubus_writew(0, dev->base_addr + ADD_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) free_netdev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static struct platform_driver mac89x0_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) .probe = mac89x0_device_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) .remove = mac89x0_device_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) .name = "mac89x0",
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) module_platform_driver(mac89x0_platform_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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