mirror of
https://git.FreeBSD.org/src.git
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d4fcf3cba5
and amd64. The optimization is a trivial on recent machines. Reviewed by: -arch (imp, marcel, dfr)
250 lines
6.8 KiB
C
250 lines
6.8 KiB
C
/*-
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* Copyright (c) 1996 - 2001 John Hay.
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* Copyright (c) 1996 SDL Communications, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/pci/pcivar.h>
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#include <machine/md_var.h>
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#include <dev/ic/hd64570.h>
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#include <dev/sr/if_srregs.h>
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#ifndef BUGGY
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#define BUGGY 0
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#endif
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static int sr_pci_probe(device_t);
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static int sr_pci_attach(device_t);
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static device_method_t sr_pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, sr_pci_probe),
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DEVMETHOD(device_attach, sr_pci_attach),
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DEVMETHOD(device_detach, sr_detach),
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{ 0, 0 }
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};
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static driver_t sr_pci_driver = {
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"sr",
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sr_pci_methods,
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sizeof(struct sr_hardc),
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};
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DRIVER_MODULE(sr, pci, sr_pci_driver, sr_devclass, 0, 0);
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MODULE_DEPEND(sr, pci, 1, 1, 1);
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static u_int src_get8_mem(struct sr_hardc *hc, u_int off);
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static u_int src_get16_mem(struct sr_hardc *hc, u_int off);
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static void src_put8_mem(struct sr_hardc *hc, u_int off, u_int val);
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static void src_put16_mem(struct sr_hardc *hc, u_int off, u_int val);
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static int
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sr_pci_probe(device_t device)
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{
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u_int32_t type = pci_get_devid(device);
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switch(type) {
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case 0x556812aa:
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device_set_desc(device, "RISCom/N2pci");
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return (BUS_PROBE_DEFAULT);
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break;
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case 0x55684778:
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case 0x55684877:
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/*
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* XXX This can probably be removed sometime.
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*/
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device_set_desc(device, "RISCom/N2pci (old id)");
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return (BUS_PROBE_DEFAULT);
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break;
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default:
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break;
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}
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return (ENXIO);
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}
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static int
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sr_pci_attach(device_t device)
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{
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int numports;
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u_int fecr;
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struct sr_hardc *hc;
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bus_space_tag_t bt_plx;
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bus_space_handle_t bh_plx;
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hc = (struct sr_hardc *)device_get_softc(device);
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bzero(hc, sizeof(struct sr_hardc));
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if (sr_allocate_plx_memory(device, 0x10, 1))
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goto errexit;
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bt_plx = rman_get_bustag(hc->res_plx_memory);
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bh_plx = rman_get_bushandle(hc->res_plx_memory);
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if (sr_allocate_memory(device, 0x18, 1))
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goto errexit;
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if (sr_allocate_irq(device, 0, 1))
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goto errexit;
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hc->cunit = device_get_unit(device);
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/*
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* Configure the PLX. This is magic. I'm doing it just like I'm told
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* to. :-)
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*
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* offset
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* 0x00 - Map Range - Mem-mapped to locate anywhere
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* 0x04 - Re-Map - PCI address decode enable
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* 0x18 - Bus Region - 32-bit bus, ready enable
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* 0x1c - Master Range - include all 16 MB
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* 0x20 - Master RAM - Map SCA Base at 0
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* 0x28 - Master Remap - direct master memory enable
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* 0x68 - Interrupt - Enable interrupt (0 to disable)
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*
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* Note: This is "cargo cult" stuff. - jrc
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*/
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bus_space_write_4(bt_plx, bh_plx, 0x00, 0xfffff000);
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bus_space_write_4(bt_plx, bh_plx, 0x04, 0x00000001);
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bus_space_write_4(bt_plx, bh_plx, 0x18, 0x40030043);
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bus_space_write_4(bt_plx, bh_plx, 0x1c, 0xff000000);
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bus_space_write_4(bt_plx, bh_plx, 0x20, 0x00000000);
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bus_space_write_4(bt_plx, bh_plx, 0x28, 0x000000e9);
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bus_space_write_4(bt_plx, bh_plx, 0x68, 0x00010900);
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/*
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* Get info from card.
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*
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* Only look for the second port if the first exists. Too many things
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* will break if we have only a second port.
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*/
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fecr = sr_read_fecr(hc);
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numports = 0;
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if (((fecr & SR_FECR_ID0) >> SR_FE_ID0_SHFT) != SR_FE_ID_NONE) {
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numports++;
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if (((fecr & SR_FECR_ID1) >> SR_FE_ID1_SHFT) != SR_FE_ID_NONE)
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numports++;
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}
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if (numports == 0)
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goto errexit;
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hc->numports = numports;
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hc->cardtype = SR_CRD_N2PCI;
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hc->src_put8 = src_put8_mem;
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hc->src_put16 = src_put16_mem;
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hc->src_get8 = src_get8_mem;
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hc->src_get16 = src_get16_mem;
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/*
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* Malloc area for tx and rx buffers. For now allocate SRC_WIN_SIZ
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* (16k) for each buffer.
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*
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* Allocate the block below 16M because the N2pci card can only access
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* 16M memory at a time.
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*
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* (We could actually allocate a contiguous block above the 16MB limit,
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* but this would complicate card programming more than we want to
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* right now -jrc)
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*/
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hc->memsize = 2 * hc->numports * SRC_WIN_SIZ;
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hc->mem_start = contigmalloc(hc->memsize,
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M_DEVBUF,
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M_NOWAIT,
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0ul,
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0xfffffful,
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0x10000,
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0x1000000);
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if (hc->mem_start == NULL) {
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printf("src%d: pci: failed to allocate buffer space.\n",
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hc->cunit);
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goto errexit;
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}
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hc->winmsk = 0xffffffff;
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hc->mem_end = (caddr_t)((u_int)hc->mem_start + hc->memsize);
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hc->mem_pstart = kvtop(hc->mem_start);
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bzero(hc->mem_start, hc->memsize);
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sr_write_fecr(hc,
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SR_FECR_DTR0 | SR_FECR_DTR1 | SR_FECR_TE0 | SR_FECR_TE1);
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if (sr_attach(device))
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goto errexit;
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return (0);
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errexit:
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sr_deallocate_resources(device);
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return (ENXIO);
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}
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/*
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* I/O for PCI N2 card(s)
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*/
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#define SRC_PCI_SCA_REG(y) ((y & 2) ? ((y & 0xfd) + 0x100) : y)
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static u_int
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src_get8_mem(struct sr_hardc *hc, u_int off)
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{
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return bus_space_read_1(hc->bt_memory, hc->bh_memory,
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SRC_PCI_SCA_REG(off));
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}
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static u_int
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src_get16_mem(struct sr_hardc *hc, u_int off)
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{
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return bus_space_read_2(hc->bt_memory, hc->bh_memory,
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SRC_PCI_SCA_REG(off));
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}
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static void
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src_put8_mem(struct sr_hardc *hc, u_int off, u_int val)
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{
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bus_space_write_1(hc->bt_memory, hc->bh_memory,
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SRC_PCI_SCA_REG(off), val);
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}
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static void
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src_put16_mem(struct sr_hardc *hc, u_int off, u_int val)
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{
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bus_space_write_2(hc->bt_memory, hc->bh_memory,
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SRC_PCI_SCA_REG(off), val);
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}
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