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freebsd-skq/sys/dev/ed/if_ed_3c503.c
Marius Strobl f6030d6ac1 - Switch to using the common MII bitbang'ing code instead of duplicating it. 
- Based on lessons learnt with dc(4) (see r185750), add bus space barriers to
  the MII bitbang read and write functions as well as to instances of page
  switching.
- Add missing locking to ed_ifmedia_{upd,sts}().
- Canonicalize some messages.
- Based on actual functionality, ED_TC5299J_MII_DIROUT should be rather named
  ED_TC5299J_MII_DIRIN.
- Remove unused headers.
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

MFC after:	1 week
2013-12-29 19:21:59 +00:00

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/*-
* Copyright (c) 2005, M. Warner Losh
* All rights reserved.
* Copyright (c) 1995, David Greenman
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ed.h"
#ifdef ED_3C503
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h> /* XXX: ed_3c503_mediachg() */
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_mib.h>
#include <net/if_media.h>
#include <net/bpf.h>
#include <dev/ed/if_edreg.h>
#include <dev/ed/if_edvar.h>
static void ed_3c503_mediachg(struct ed_softc *sc);
/*
* Probe and vendor-specific initialization routine for 3Com 3c503 boards
*/
int
ed_probe_3Com(device_t dev, int port_rid, int flags)
{
struct ed_softc *sc = device_get_softc(dev);
int error;
int i;
u_int memsize;
u_char isa16bit;
u_long conf_maddr, conf_msize, irq, junk, pmem;
error = ed_alloc_port(dev, 0, ED_3COM_IO_PORTS);
if (error)
return (error);
sc->asic_offset = ED_3COM_ASIC_OFFSET;
sc->nic_offset = ED_3COM_NIC_OFFSET;
/*
* Verify that the kernel configured I/O address matches the board
* configured address
*/
switch (ed_asic_inb(sc, ED_3COM_BCFR)) {
case ED_3COM_BCFR_300:
if (rman_get_start(sc->port_res) != 0x300)
return (ENXIO);
break;
case ED_3COM_BCFR_310:
if (rman_get_start(sc->port_res) != 0x310)
return (ENXIO);
break;
case ED_3COM_BCFR_330:
if (rman_get_start(sc->port_res) != 0x330)
return (ENXIO);
break;
case ED_3COM_BCFR_350:
if (rman_get_start(sc->port_res) != 0x350)
return (ENXIO);
break;
case ED_3COM_BCFR_250:
if (rman_get_start(sc->port_res) != 0x250)
return (ENXIO);
break;
case ED_3COM_BCFR_280:
if (rman_get_start(sc->port_res) != 0x280)
return (ENXIO);
break;
case ED_3COM_BCFR_2A0:
if (rman_get_start(sc->port_res) != 0x2a0)
return (ENXIO);
break;
case ED_3COM_BCFR_2E0:
if (rman_get_start(sc->port_res) != 0x2e0)
return (ENXIO);
break;
default:
return (ENXIO);
}
error = bus_get_resource(dev, SYS_RES_MEMORY, 0,
&conf_maddr, &conf_msize);
if (error)
return (error);
/*
* Verify that the kernel shared memory address matches the board
* configured address.
*/
switch (ed_asic_inb(sc, ED_3COM_PCFR)) {
case ED_3COM_PCFR_DC000:
if (conf_maddr != 0xdc000)
return (ENXIO);
break;
case ED_3COM_PCFR_D8000:
if (conf_maddr != 0xd8000)
return (ENXIO);
break;
case ED_3COM_PCFR_CC000:
if (conf_maddr != 0xcc000)
return (ENXIO);
break;
case ED_3COM_PCFR_C8000:
if (conf_maddr != 0xc8000)
return (ENXIO);
break;
default:
return (ENXIO);
}
/*
* Reset NIC and ASIC. Enable on-board transceiver throughout reset
* sequence because it'll lock up if the cable isn't connected if we
* don't.
*/
ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_RST | ED_3COM_CR_XSEL);
/*
* Wait for a while, then un-reset it
*/
DELAY(50);
/*
* The 3Com ASIC defaults to rather strange settings for the CR after
* a reset - it's important to set it again after the following outb
* (this is done when we map the PROM below).
*/
ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL);
/*
* Wait a bit for the NIC to recover from the reset
*/
DELAY(5000);
sc->vendor = ED_VENDOR_3COM;
sc->type_str = "3c503";
sc->mem_shared = 1;
sc->cr_proto = ED_CR_RD2;
/*
* Hmmm...a 16bit 3Com board has 16k of memory, but only an 8k window
* to it.
*/
memsize = 8192;
/*
* Get station address from on-board ROM
*/
/*
* First, map ethernet address PROM over the top of where the NIC
* registers normally appear.
*/
ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_EALO | ED_3COM_CR_XSEL);
for (i = 0; i < ETHER_ADDR_LEN; ++i)
sc->enaddr[i] = ed_nic_inb(sc, i);
/*
* Unmap PROM - select NIC registers. The proper setting of the
* tranceiver is set in ed_init so that the attach code is given a
* chance to set the default based on a compile-time config option
*/
ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL);
/*
* Determine if this is an 8bit or 16bit board
*/
/*
* select page 0 registers
*/
ed_nic_barrier(sc, ED_P0_CR, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
ed_nic_outb(sc, ED_P0_CR, ED_CR_PAGE_0 | ED_CR_RD2 | ED_CR_STP);
ed_nic_barrier(sc, ED_P0_CR, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
/*
* Attempt to clear WTS bit. If it doesn't clear, then this is a 16bit
* board.
*/
ed_nic_outb(sc, ED_P0_DCR, 0);
/*
* select page 2 registers
*/
ed_nic_barrier(sc, ED_P0_CR, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
ed_nic_outb(sc, ED_P0_CR, ED_CR_PAGE_2 | ED_CR_RD2 | ED_CR_STP);
ed_nic_barrier(sc, ED_P0_CR, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
/*
* The 3c503 forces the WTS bit to a one if this is a 16bit board
*/
if (ed_nic_inb(sc, ED_P2_DCR) & ED_DCR_WTS)
isa16bit = 1;
else
isa16bit = 0;
/*
* select page 0 registers
*/
ed_nic_outb(sc, ED_P2_CR, ED_CR_RD2 | ED_CR_STP);
error = ed_alloc_memory(dev, 0, memsize);
if (error)
return (error);
pmem = rman_get_start(sc->mem_res);
error = ed_isa_mem_ok(dev, pmem, memsize);
if (error)
return (error);
sc->mem_start = 0;
sc->mem_size = memsize;
sc->mem_end = sc->mem_start + memsize;
/*
* We have an entire 8k window to put the transmit buffers on the
* 16bit boards. But since the 16bit 3c503's shared memory is only
* fast enough to overlap the loading of one full-size packet, trying
* to load more than 2 buffers can actually leave the transmitter idle
* during the load. So 2 seems the best value. (Although a mix of
* variable-sized packets might change this assumption. Nonetheless,
* we optimize for linear transfers of same-size packets.)
*/
if (isa16bit) {
if (flags & ED_FLAGS_NO_MULTI_BUFFERING)
sc->txb_cnt = 1;
else
sc->txb_cnt = 2;
sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_16BIT;
sc->rec_page_start = ED_3COM_RX_PAGE_OFFSET_16BIT;
sc->rec_page_stop = memsize / ED_PAGE_SIZE +
ED_3COM_RX_PAGE_OFFSET_16BIT;
sc->mem_ring = sc->mem_start;
} else {
sc->txb_cnt = 1;
sc->tx_page_start = ED_3COM_TX_PAGE_OFFSET_8BIT;
sc->rec_page_start = ED_TXBUF_SIZE + ED_3COM_TX_PAGE_OFFSET_8BIT;
sc->rec_page_stop = memsize / ED_PAGE_SIZE +
ED_3COM_TX_PAGE_OFFSET_8BIT;
sc->mem_ring = sc->mem_start + (ED_PAGE_SIZE * ED_TXBUF_SIZE);
}
sc->isa16bit = isa16bit;
/*
* Initialize GA page start/stop registers. Probably only needed if
* doing DMA, but what the hell.
*/
ed_asic_outb(sc, ED_3COM_PSTR, sc->rec_page_start);
ed_asic_outb(sc, ED_3COM_PSPR, sc->rec_page_stop);
/*
* Set IRQ. 3c503 only allows a choice of irq 2-5.
*/
error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk);
if (error)
return (error);
switch (irq) {
case 2:
case 9:
ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ2);
break;
case 3:
ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ3);
break;
case 4:
ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ4);
break;
case 5:
ed_asic_outb(sc, ED_3COM_IDCFR, ED_3COM_IDCFR_IRQ5);
break;
default:
device_printf(dev, "Invalid irq configuration (%ld) must be 3-5,9 for 3c503\n",
irq);
return (ENXIO);
}
/*
* Initialize GA configuration register. Set bank and enable shared
* mem.
*/
ed_asic_outb(sc, ED_3COM_GACFR, ED_3COM_GACFR_RSEL |
ED_3COM_GACFR_MBS0);
/*
* Initialize "Vector Pointer" registers. These gawd-awful things are
* compared to 20 bits of the address on ISA, and if they match, the
* shared memory is disabled. We set them to 0xffff0...allegedly the
* reset vector.
*/
ed_asic_outb(sc, ED_3COM_VPTR2, 0xff);
ed_asic_outb(sc, ED_3COM_VPTR1, 0xff);
ed_asic_outb(sc, ED_3COM_VPTR0, 0x00);
error = ed_clear_memory(dev);
if (error == 0) {
sc->sc_mediachg = ed_3c503_mediachg;
sc->sc_write_mbufs = ed_shmem_write_mbufs;
}
return (error);
}
static void
ed_3c503_mediachg(struct ed_softc *sc)
{
struct ifnet *ifp = sc->ifp;
/*
* If this is a 3Com board, the tranceiver must be software enabled
* (there is no settable hardware default).
*/
if (ifp->if_flags & IFF_LINK2)
ed_asic_outb(sc, ED_3COM_CR, 0);
else
ed_asic_outb(sc, ED_3COM_CR, ED_3COM_CR_XSEL);
}
#endif /* ED_3C503 */
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