FreeBSD-5.3/sys/dev/sr/if_sr_pci.c
/*
* Copyright (c) 1996 - 2001 John Hay.
* Copyright (c) 1996 SDL Communications, Inc.
* 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, 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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: src/sys/dev/sr/if_sr_pci.c,v 1.20 2004/05/30 20:08:41 phk Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/bus_pio.h>
#include <machine/bus_memio.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <machine/md_var.h>
#include <dev/ic/hd64570.h>
#include <dev/sr/if_srregs.h>
#ifndef BUGGY
#define BUGGY 0
#endif
static int sr_pci_probe(device_t);
static int sr_pci_attach(device_t);
static device_method_t sr_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sr_pci_probe),
DEVMETHOD(device_attach, sr_pci_attach),
DEVMETHOD(device_detach, sr_detach),
{ 0, 0 }
};
static driver_t sr_pci_driver = {
"sr",
sr_pci_methods,
sizeof(struct sr_hardc),
};
DRIVER_MODULE(sr, pci, sr_pci_driver, sr_devclass, 0, 0);
MODULE_DEPEND(sr, pci, 1, 1, 1);
static u_int src_get8_mem(struct sr_hardc *hc, u_int off);
static u_int src_get16_mem(struct sr_hardc *hc, u_int off);
static void src_put8_mem(struct sr_hardc *hc, u_int off, u_int val);
static void src_put16_mem(struct sr_hardc *hc, u_int off, u_int val);
static int
sr_pci_probe(device_t device)
{
u_int32_t type = pci_get_devid(device);
switch(type) {
case 0x556812aa:
device_set_desc(device, "RISCom/N2pci");
return (0);
break;
case 0x55684778:
case 0x55684877:
/*
* XXX This can probably be removed sometime.
*/
device_set_desc(device, "RISCom/N2pci (old id)");
return (0);
break;
default:
break;
}
return (ENXIO);
}
static int
sr_pci_attach(device_t device)
{
int numports;
u_int fecr;
struct sr_hardc *hc;
bus_space_tag_t bt_plx;
bus_space_handle_t bh_plx;
hc = (struct sr_hardc *)device_get_softc(device);
bzero(hc, sizeof(struct sr_hardc));
if (sr_allocate_plx_memory(device, 0x10, 1))
goto errexit;
bt_plx = rman_get_bustag(hc->res_plx_memory);
bh_plx = rman_get_bushandle(hc->res_plx_memory);
if (sr_allocate_memory(device, 0x18, 1))
goto errexit;
if (sr_allocate_irq(device, 0, 1))
goto errexit;
hc->cunit = device_get_unit(device);
/*
* Configure the PLX. This is magic. I'm doing it just like I'm told
* to. :-)
*
* offset
* 0x00 - Map Range - Mem-mapped to locate anywhere
* 0x04 - Re-Map - PCI address decode enable
* 0x18 - Bus Region - 32-bit bus, ready enable
* 0x1c - Master Range - include all 16 MB
* 0x20 - Master RAM - Map SCA Base at 0
* 0x28 - Master Remap - direct master memory enable
* 0x68 - Interrupt - Enable interrupt (0 to disable)
*
* Note: This is "cargo cult" stuff. - jrc
*/
bus_space_write_4(bt_plx, bh_plx, 0x00, 0xfffff000);
bus_space_write_4(bt_plx, bh_plx, 0x04, 0x00000001);
bus_space_write_4(bt_plx, bh_plx, 0x18, 0x40030043);
bus_space_write_4(bt_plx, bh_plx, 0x1c, 0xff000000);
bus_space_write_4(bt_plx, bh_plx, 0x20, 0x00000000);
bus_space_write_4(bt_plx, bh_plx, 0x28, 0x000000e9);
bus_space_write_4(bt_plx, bh_plx, 0x68, 0x00010900);
/*
* Get info from card.
*
* Only look for the second port if the first exists. Too many things
* will break if we have only a second port.
*/
fecr = sr_read_fecr(hc);
numports = 0;
if (((fecr & SR_FECR_ID0) >> SR_FE_ID0_SHFT) != SR_FE_ID_NONE) {
numports++;
if (((fecr & SR_FECR_ID1) >> SR_FE_ID1_SHFT) != SR_FE_ID_NONE)
numports++;
}
if (numports == 0)
goto errexit;
hc->numports = numports;
hc->cardtype = SR_CRD_N2PCI;
hc->src_put8 = src_put8_mem;
hc->src_put16 = src_put16_mem;
hc->src_get8 = src_get8_mem;
hc->src_get16 = src_get16_mem;
/*
* Malloc area for tx and rx buffers. For now allocate SRC_WIN_SIZ
* (16k) for each buffer.
*
* Allocate the block below 16M because the N2pci card can only access
* 16M memory at a time.
*
* (We could actually allocate a contiguous block above the 16MB limit,
* but this would complicate card programming more than we want to
* right now -jrc)
*/
hc->memsize = 2 * hc->numports * SRC_WIN_SIZ;
hc->mem_start = contigmalloc(hc->memsize,
M_DEVBUF,
M_NOWAIT,
0ul,
0xfffffful,
0x10000,
0x1000000);
if (hc->mem_start == NULL) {
printf("src%d: pci: failed to allocate buffer space.\n",
hc->cunit);
goto errexit;
}
hc->winmsk = 0xffffffff;
hc->mem_end = (caddr_t)((u_int)hc->mem_start + hc->memsize);
hc->mem_pstart = kvtop(hc->mem_start);
bzero(hc->mem_start, hc->memsize);
sr_write_fecr(hc,
SR_FECR_DTR0 | SR_FECR_DTR1 | SR_FECR_TE0 | SR_FECR_TE1);
if (sr_attach(device))
goto errexit;
return (0);
errexit:
sr_deallocate_resources(device);
return (ENXIO);
}
/*
* I/O for PCI N2 card(s)
*/
#define SRC_PCI_SCA_REG(y) ((y & 2) ? ((y & 0xfd) + 0x100) : y)
static u_int
src_get8_mem(struct sr_hardc *hc, u_int off)
{
return bus_space_read_1(hc->bt_memory, hc->bh_memory,
SRC_PCI_SCA_REG(off));
}
static u_int
src_get16_mem(struct sr_hardc *hc, u_int off)
{
return bus_space_read_2(hc->bt_memory, hc->bh_memory,
SRC_PCI_SCA_REG(off));
}
static void
src_put8_mem(struct sr_hardc *hc, u_int off, u_int val)
{
bus_space_write_1(hc->bt_memory, hc->bh_memory,
SRC_PCI_SCA_REG(off), val);
}
static void
src_put16_mem(struct sr_hardc *hc, u_int off, u_int val)
{
bus_space_write_2(hc->bt_memory, hc->bh_memory,
SRC_PCI_SCA_REG(off), val);
}