NetBSD/sys/dev/pci/btvmeii.c

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/* $NetBSD: btvmeii.c,v 1.1 2000/02/25 18:22:39 drochner Exp $ */
/*
* Copyright (c) 1999
* Matthias Drochner. 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.
*
* 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.
*/
/*
* Driver for the Bit3/SBS PCI-VME adapter Model 2706.
* Uses the common Tundra Universe code.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <machine/bus.h>
#include <sys/malloc.h>
#include <sys/extent.h>
#include <dev/pci/ppbreg.h>
#include <dev/vme/vmereg.h>
#include <dev/vme/vmevar.h>
#include <dev/pci/universe_pci_var.h>
static int b3_2706_match __P((struct device *, struct cfdata *, void *));
static void b3_2706_attach __P((struct device *, struct device *, void *));
/* exported via tag structs */
int b3_2706_map_vme __P((void *, vme_addr_t, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
bus_space_tag_t *, bus_space_handle_t *, vme_mapresc_t*));
void b3_2706_unmap_vme __P((void *, vme_mapresc_t));
int b3_2706_vme_probe __P((void *, vme_addr_t, vme_size_t, vme_am_t,
vme_datasize_t,
int (*)(void *, bus_space_tag_t, bus_space_handle_t),
void *));
int b3_2706_map_vmeint __P((void *, int, int, vme_intr_handle_t *));
void *b3_2706_establish_vmeint __P((void *, vme_intr_handle_t, int,
int (*)(void *), void *));
void b3_2706_disestablish_vmeint __P((void *, void *));
int b3_2706_dmamap_create __P((void *, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
int, vme_size_t, vme_addr_t,
int, bus_dmamap_t *));
void b3_2706_dmamap_destroy __P((void *, bus_dmamap_t));
int b3_2706_dmamem_alloc __P((void *, vme_size_t,
vme_am_t, vme_datasize_t, vme_swap_t,
bus_dma_segment_t *, int, int *, int));
void b3_2706_dmamem_free __P((void *, bus_dma_segment_t *, int));
struct b3_2706_vmemaprescs {
int wnd;
unsigned long pcibase, maplen;
bus_space_handle_t handle;
u_int32_t len;
};
struct b3_2706_softc {
struct device sc_dev;
struct univ_pci_data univdata;
bus_space_tag_t swapt, vmet;
bus_space_handle_t swaph;
bus_addr_t vmepbase;
int windowused[8];
struct b3_2706_vmemaprescs vmemaprescs[8];
struct extent *vmeext;
char vmemap[EXTENT_FIXED_STORAGE_SIZE(8)];
struct vme_chipset_tag sc_vct;
};
struct cfattach btvmeii_ca = {
sizeof(struct b3_2706_softc), b3_2706_match, b3_2706_attach,
#if 0
b3_2706_detach
#endif
};
/*
* The adapter consists of a DEC PCI-PCI-bridge with two
* PCI devices behind it: A Tundra Universe as device 4 and
* some FPGA with glue logics as device 8.
* As long as the autoconf code doesn't provide more support
* for dependant devices, we have to duplicate a part of the
* "ppb" functions here.
*/
static int
b3_2706_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
int secbus;
pcitag_t tag;
pcireg_t id;
if ((PCI_VENDOR(pa->pa_id) != PCI_VENDOR_DEC)
|| (PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_DEC_21152))
return (0);
secbus = PPB_BUSINFO_SECONDARY(pci_conf_read(pc, pa->pa_tag,
PPB_REG_BUSINFO));
if (secbus == 0) {
printf("b3_2706_match: ppb not configured\n");
return (0);
}
tag = pci_make_tag(pc, secbus, 4, 0);
id = pci_conf_read(pc, tag, PCI_ID_REG);
if ((PCI_VENDOR(id) != PCI_VENDOR_NEWBRIDGE)
|| (PCI_PRODUCT(id) != PCI_PRODUCT_NEWBRIDGE_CA91CX42)) {
#ifdef DEBUG
printf("b3_2706_match: no tundra\n");
#endif
return (0);
}
tag = pci_make_tag(pc, secbus, 8, 0);
id = pci_conf_read(pc, tag, PCI_ID_REG);
if ((PCI_VENDOR(id) != PCI_VENDOR_BIT3)
|| (PCI_PRODUCT(id) != PCI_PRODUCT_BIT3_PCIVME2706)) {
#ifdef DEBUG
printf("b3_2706_match: no bit3 chip\n");
#endif
return (0);
}
return (5); /* beat "ppb" */
}
static void
b3_2706_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct b3_2706_softc *sc = (struct b3_2706_softc *)self;
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
struct pci_attach_args aa;
int secbus;
pcireg_t intr;
pcitag_t tag;
bus_addr_t swappbase;
int i;
struct vmebus_attach_args vaa;
printf("\n");
secbus = PPB_BUSINFO_SECONDARY(pci_conf_read(pc, pa->pa_tag,
PPB_REG_BUSINFO));
bcopy(pa, &aa, sizeof(struct pci_attach_args));
aa.pa_device = 4;
aa.pa_function = 0;
aa.pa_tag = pci_make_tag(pc, secbus, 4, 0);
aa.pa_intrswiz += 4;
intr = pci_conf_read(pc, aa.pa_tag, PCI_INTERRUPT_REG);
/*
* swizzle it based on the number of
* busses we're behind and our device
* number.
*/
aa.pa_intrpin = ((1 + aa.pa_intrswiz - 1) % 4) + 1;
aa.pa_intrline = PCI_INTERRUPT_LINE(intr);
if (univ_pci_attach(&sc->univdata, &aa)) {
printf("%s: error initializing universe chip\n",
self->dv_xname);
return;
}
tag = pci_make_tag(pc, secbus, 8, 0);
sc->swapt = pa->pa_memt;
if (pci_mapreg_info(pc, tag, 0x10,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
&swappbase, 0, 0) ||
bus_space_map(sc->swapt, swappbase, 4, 0, &sc->swaph)) {
printf("%s: can't map byteswap register\n", self->dv_xname);
return;
}
sc->vmet = pa->pa_memt;
if (pci_mapreg_info(pc, tag, 0x14,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
&sc->vmepbase, 0, 0)) {
printf("%s: VME range not assigned\n", self->dv_xname);
return;
}
printf("%s: VME window @%lx\n", self->dv_xname, (long)sc->vmepbase);
for (i = 0; i < 8; i++) {
univ_pci_unmapvme(&sc->univdata, i);
sc->windowused[i] = 0;
}
sc->vmeext = extent_create("pcivme", sc->vmepbase,
sc->vmepbase + 32*1024*1024 - 1, M_DEVBUF,
sc->vmemap, sizeof(sc->vmemap),
EX_NOCOALESCE);
sc->sc_vct.cookie = self;
sc->sc_vct.vct_probe = b3_2706_vme_probe;
sc->sc_vct.vct_map = b3_2706_map_vme;
sc->sc_vct.vct_unmap = b3_2706_unmap_vme;
sc->sc_vct.vct_int_map = b3_2706_map_vmeint;
sc->sc_vct.vct_int_establish = b3_2706_establish_vmeint;
sc->sc_vct.vct_int_disestablish = b3_2706_disestablish_vmeint;
sc->sc_vct.vct_dmamap_create = b3_2706_dmamap_create;
sc->sc_vct.vct_dmamap_destroy = b3_2706_dmamap_destroy;
sc->sc_vct.vct_dmamem_alloc = b3_2706_dmamem_alloc;
sc->sc_vct.vct_dmamem_free = b3_2706_dmamem_free;
vaa.va_vct = &(sc->sc_vct);
vaa.va_bdt = pa->pa_dmat; /* XXX */
vaa.va_slaveconfig = 0; /* XXX */
config_found(self, &vaa, 0);
}
#define sc ((struct b3_2706_softc*)vsc)
int
b3_2706_map_vme(vsc, vmeaddr, len, am, datasizes, swap, tag, handle, resc)
void *vsc;
vme_addr_t vmeaddr;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasizes;
vme_swap_t swap;
bus_space_tag_t *tag;
bus_space_handle_t *handle;
vme_mapresc_t *resc;
{
int idx, i, wnd, res;
unsigned long boundary, maplen, pcibase;
vme_addr_t vmebase, vmeend;
static int windoworder[8] = {1, 2, 3, 5, 6, 7, 0, 4};
/* prefer windows with fine granularity for small mappings */
wnd = -1;
if (len <= 32*1024)
idx = 6;
else
idx = 0;
for (i = 0; i < 8; i++) {
if (!sc->windowused[windoworder[idx]]) {
wnd = windoworder[idx];
sc->windowused[wnd] = 1;
break;
}
idx = (idx + 1) % 8;
}
if (wnd == -1)
return (ENOSPC);
boundary = (wnd & 3) ? 64*1024 : 4*1024;
/* first mapped address */
vmebase = vmeaddr & ~(boundary - 1);
/* base of last mapped page */
vmeend = (vmeaddr + len - 1) & ~(boundary - 1);
/* bytes in outgoing window required */
maplen = vmeend - vmebase + boundary;
if (extent_alloc(sc->vmeext, maplen, boundary, 0, EX_FAST, &pcibase))
return (ENOMEM);
res = univ_pci_mapvme(&sc->univdata, wnd, vmebase, maplen,
am, datasizes, pcibase);
if (res) {
extent_free(sc->vmeext, pcibase, maplen, 0);
return (res);
}
res = bus_space_map(sc->vmet, pcibase + (vmeaddr - vmebase), len,
0, handle);
if (res) {
univ_pci_unmapvme(&sc->univdata, wnd);
extent_free(sc->vmeext, pcibase, maplen, 0);
return (res);
}
*tag = sc->vmet;
/*
* save all data needed for later unmapping
*/
sc->vmemaprescs[wnd].wnd = wnd;
sc->vmemaprescs[wnd].pcibase = pcibase;
sc->vmemaprescs[wnd].maplen = maplen;
sc->vmemaprescs[wnd].handle = *handle;
sc->vmemaprescs[wnd].len = len;
*resc = &sc->vmemaprescs[wnd];
return (0);
}
void
b3_2706_unmap_vme(vsc, resc)
void *vsc;
vme_mapresc_t resc;
{
struct b3_2706_vmemaprescs *r = resc;
bus_space_unmap(sc->vmet, r->handle, r->len);
extent_free(sc->vmeext, r->pcibase, r->maplen, 0);
if (!sc->windowused[r->wnd])
panic("b3_2706_unmap_vme: bad window");
univ_pci_unmapvme(&sc->univdata, r->wnd);
sc->windowused[r->wnd] = 0;
}
int
b3_2706_vme_probe(vsc, addr, len, am, datasize, callback, cbarg)
void *vsc;
vme_addr_t addr;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasize;
int (*callback) __P((void *, bus_space_tag_t, bus_space_handle_t));
void *cbarg;
{
return (EINVAL);
}
int
b3_2706_map_vmeint(vsc, level, vector, handlep)
void *vsc;
int level, vector;
vme_intr_handle_t *handlep;
{
return (EINVAL);
}
void *
b3_2706_establish_vmeint(vsc, handle, prior, func, arg)
void *vsc;
vme_intr_handle_t handle;
int prior;
int (*func) __P((void *));
void *arg;
{
return (NULL);
}
void
b3_2706_disestablish_vmeint(vsc, cookie)
void *vsc;
void *cookie;
{
}
int
b3_2706_dmamap_create(vsc, len, am, datasize, swap,
nsegs, segsz, bound,
flags, mapp)
void *vsc;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasize;
vme_swap_t swap;
int nsegs;
vme_size_t segsz;
vme_addr_t bound;
int flags;
bus_dmamap_t *mapp;
{
return (EINVAL);
}
void
b3_2706_dmamap_destroy(vsc, map)
void *vsc;
bus_dmamap_t map;
{
}
int
b3_2706_dmamem_alloc(vsc, len, am, datasizes, swap, segs, nsegs, rsegs, flags)
void *vsc;
vme_size_t len;
vme_am_t am;
vme_datasize_t datasizes;
vme_swap_t swap;
bus_dma_segment_t *segs;
int nsegs;
int *rsegs;
int flags;
{
return (EINVAL);
}
void
b3_2706_dmamem_free(vsc, segs, nsegs)
void *vsc;
bus_dma_segment_t *segs;
int nsegs;
{
}
#undef sc