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freebsd/sys/alpha/pci/apecs.c
1999-08-28 01:08:13 +00:00

675 lines
17 KiB
C

/*-
* Copyright (c) 1998 Doug Rabson
* 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.
*
* $FreeBSD$
*/
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Additional Copyright (c) 1998 by Andrew Gallatin for Duke University
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <alpha/pci/apecsreg.h>
#include <alpha/pci/apecsvar.h>
#include <alpha/pci/pcibus.h>
#include <alpha/isa/isavar.h>
#include <machine/intr.h>
#include <machine/resource.h>
#include <machine/intrcnt.h>
#include <machine/cpuconf.h>
#include <machine/swiz.h>
#include <machine/rpb.h>
#include <machine/sgmap.h>
#include <vm/vm.h>
#include <vm/vm_prot.h>
#include <vm/vm_page.h>
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t apecs_devclass;
static device_t apecs0; /* XXX only one for now */
struct apecs_softc {
vm_offset_t dmem_base; /* dense memory */
vm_offset_t smem_base; /* sparse memory */
vm_offset_t io_base; /* dense i/o */
vm_offset_t cfg0_base; /* dense pci0 config */
vm_offset_t cfg1_base; /* dense pci1 config */
};
#define APECS_SOFTC(dev) (struct apecs_softc*) device_get_softc(dev)
static alpha_chipset_inb_t apecs_swiz_inb;
static alpha_chipset_inw_t apecs_swiz_inw;
static alpha_chipset_inl_t apecs_swiz_inl;
static alpha_chipset_outb_t apecs_swiz_outb;
static alpha_chipset_outw_t apecs_swiz_outw;
static alpha_chipset_outl_t apecs_swiz_outl;
static alpha_chipset_readb_t apecs_swiz_readb;
static alpha_chipset_readw_t apecs_swiz_readw;
static alpha_chipset_readl_t apecs_swiz_readl;
static alpha_chipset_writeb_t apecs_swiz_writeb;
static alpha_chipset_writew_t apecs_swiz_writew;
static alpha_chipset_writel_t apecs_swiz_writel;
static alpha_chipset_maxdevs_t apecs_swiz_maxdevs;
static alpha_chipset_cfgreadb_t apecs_swiz_cfgreadb;
static alpha_chipset_cfgreadw_t apecs_swiz_cfgreadw;
static alpha_chipset_cfgreadl_t apecs_swiz_cfgreadl;
static alpha_chipset_cfgwriteb_t apecs_swiz_cfgwriteb;
static alpha_chipset_cfgwritew_t apecs_swiz_cfgwritew;
static alpha_chipset_cfgwritel_t apecs_swiz_cfgwritel;
static alpha_chipset_addrcvt_t apecs_cvt_dense;
static alpha_chipset_read_hae_t apecs_read_hae;
static alpha_chipset_write_hae_t apecs_write_hae;
static alpha_chipset_t apecs_swiz_chipset = {
apecs_swiz_inb,
apecs_swiz_inw,
apecs_swiz_inl,
apecs_swiz_outb,
apecs_swiz_outw,
apecs_swiz_outl,
apecs_swiz_readb,
apecs_swiz_readw,
apecs_swiz_readl,
apecs_swiz_writeb,
apecs_swiz_writew,
apecs_swiz_writel,
apecs_swiz_maxdevs,
apecs_swiz_cfgreadb,
apecs_swiz_cfgreadw,
apecs_swiz_cfgreadl,
apecs_swiz_cfgwriteb,
apecs_swiz_cfgwritew,
apecs_swiz_cfgwritel,
apecs_cvt_dense,
NULL,
apecs_read_hae,
apecs_write_hae,
};
static int
apecs_swiz_maxdevs(u_int b)
{
return 12; /* XXX */
}
static u_int8_t
apecs_swiz_inb(u_int32_t port)
{
alpha_mb();
return SPARSE_READ_BYTE(KV(APECS_PCI_SIO), port);
}
static u_int16_t
apecs_swiz_inw(u_int32_t port)
{
alpha_mb();
return SPARSE_READ_WORD(KV(APECS_PCI_SIO), port);
}
static u_int32_t
apecs_swiz_inl(u_int32_t port)
{
alpha_mb();
return SPARSE_READ_LONG(KV(APECS_PCI_SIO), port);
}
static void
apecs_swiz_outb(u_int32_t port, u_int8_t data)
{
SPARSE_WRITE_BYTE(KV(APECS_PCI_SIO), port, data);
alpha_wmb();
}
static void
apecs_swiz_outw(u_int32_t port, u_int16_t data)
{
SPARSE_WRITE_WORD(KV(APECS_PCI_SIO), port, data);
alpha_wmb();
}
static void
apecs_swiz_outl(u_int32_t port, u_int32_t data)
{
SPARSE_WRITE_LONG(KV(APECS_PCI_SIO), port, data);
alpha_wmb();
}
/*
* Memory functions.
*
* XXX linux does 32-bit reads/writes via dense space. This doesn't
* appear to work for devices behind a ppb. I'm using sparse
* accesses & they appear to work just fine everywhere.
*/
static u_int32_t apecs_hae_mem;
#define REG1 (1UL << 24)
static __inline void
apecs_swiz_set_hae_mem(u_int32_t *pa)
{
int s;
u_int32_t msb;
if(*pa >= REG1){
msb = *pa & 0xf8000000;
*pa -= msb;
s = splhigh();
if (msb != apecs_hae_mem) {
apecs_hae_mem = msb;
REGVAL(EPIC_HAXR1) = apecs_hae_mem;
alpha_mb();
apecs_hae_mem = REGVAL(EPIC_HAXR1);
}
splx(s);
}
}
static u_int8_t
apecs_swiz_readb(u_int32_t pa)
{
alpha_mb();
apecs_swiz_set_hae_mem(&pa);
return SPARSE_READ_BYTE(KV(APECS_PCI_SPARSE), pa);
}
static u_int16_t
apecs_swiz_readw(u_int32_t pa)
{
alpha_mb();
apecs_swiz_set_hae_mem(&pa);
return SPARSE_READ_WORD(KV(APECS_PCI_SPARSE), pa);
}
static u_int32_t
apecs_swiz_readl(u_int32_t pa)
{
alpha_mb();
apecs_swiz_set_hae_mem(&pa);
return SPARSE_READ_LONG(KV(APECS_PCI_SPARSE), pa);
}
static void
apecs_swiz_writeb(u_int32_t pa, u_int8_t data)
{
apecs_swiz_set_hae_mem(&pa);
SPARSE_WRITE_BYTE(KV(APECS_PCI_SPARSE), pa, data);
alpha_wmb();
}
static void
apecs_swiz_writew(u_int32_t pa, u_int16_t data)
{
apecs_swiz_set_hae_mem(&pa);
SPARSE_WRITE_WORD(KV(APECS_PCI_SPARSE), pa, data);
alpha_wmb();
}
static void
apecs_swiz_writel(u_int32_t pa, u_int32_t data)
{
apecs_swiz_set_hae_mem(&pa);
SPARSE_WRITE_LONG(KV(APECS_PCI_SPARSE), pa, data);
alpha_wmb();
}
#define APECS_SWIZ_CFGOFF(b, s, f, r) \
(((b) << 16) | ((s) << 11) | ((f) << 8) | (r))
#define APECS_TYPE1_SETUP(b,s,old_haxr2) if((b)) { \
do { \
(s) = splhigh(); \
(old_haxr2) = REGVAL(EPIC_HAXR2); \
alpha_mb(); \
REGVAL(EPIC_HAXR2) = (old_haxr2) | 0x1; \
alpha_mb(); \
} while(0); \
}
#define APECS_TYPE1_TEARDOWN(b,s,old_haxr2) if((b)) { \
do { \
alpha_mb(); \
REGVAL(EPIC_HAXR2) = (old_haxr2); \
alpha_mb(); \
splx((s)); \
} while(0); \
}
#define SWIZ_CFGREAD(b, s, f, r, width, type) \
type val = ~0; \
int ipl = 0; \
u_int32_t old_haxr2 = 0; \
struct apecs_softc* sc = APECS_SOFTC(apecs0); \
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(sc->cfg0_base, off); \
alpha_mb(); \
APECS_TYPE1_SETUP(b,ipl,old_haxr2); \
if (!badaddr((caddr_t)kv, sizeof(type))) { \
val = SPARSE_##width##_EXTRACT(off, SPARSE_READ(kv)); \
} \
APECS_TYPE1_TEARDOWN(b,ipl,old_haxr2); \
return val;
#define SWIZ_CFGWRITE(b, s, f, r, data, width, type) \
int ipl = 0; \
u_int32_t old_haxr2 = 0; \
struct apecs_softc* sc = APECS_SOFTC(apecs0); \
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(sc->cfg0_base, off); \
alpha_mb(); \
APECS_TYPE1_SETUP(b,ipl,old_haxr2); \
if (!badaddr((caddr_t)kv, sizeof(type))) { \
SPARSE_WRITE(kv, SPARSE_##width##_INSERT(off, data)); \
alpha_wmb(); \
} \
APECS_TYPE1_TEARDOWN(b,ipl,old_haxr2); \
return;
#if 1
static u_int8_t
apecs_swiz_cfgreadb(u_int h, u_int b, u_int s, u_int f, u_int r)
{
SWIZ_CFGREAD(b, s, f, r, BYTE, u_int8_t);
}
static u_int16_t
apecs_swiz_cfgreadw(u_int h, u_int b, u_int s, u_int f, u_int r)
{
SWIZ_CFGREAD(b, s, f, r, WORD, u_int16_t);
}
static u_int32_t
apecs_swiz_cfgreadl(u_int h, u_int b, u_int s, u_int f, u_int r)
{
SWIZ_CFGREAD(b, s, f, r, LONG, u_int32_t);
}
static void
apecs_swiz_cfgwriteb(u_int h, u_int b, u_int s, u_int f, u_int r, u_int8_t data)
{
SWIZ_CFGWRITE(b, s, f, r, data, BYTE, u_int8_t);
}
static void
apecs_swiz_cfgwritew(u_int h, u_int b, u_int s, u_int f, u_int r, u_int16_t data)
{
SWIZ_CFGWRITE(b, s, f, r, data, WORD, u_int16_t);
}
static void
apecs_swiz_cfgwritel(u_int h, u_int b, u_int s, u_int f, u_int r, u_int32_t data)
{
SWIZ_CFGWRITE(b, s, f, r, data, LONG, u_int32_t);
}
#else
static u_int8_t
apecs_swiz_cfgreadb(u_int h, u_int b, u_int s, u_int f, u_int r)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
alpha_mb();
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_BYTE_OFFSET(off)), 1)) return ~0;
return SPARSE_READ_BYTE(sc->cfg0_base, off);
}
static u_int16_t
apecs_swiz_cfgreadw(u_int h, u_int b, u_int s, u_int f, u_int r)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
alpha_mb();
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_WORD_OFFSET(off)), 2)) return ~0;
return SPARSE_READ_WORD(sc->cfg0_base, off);
}
static u_int32_t
apecs_swiz_cfgreadl(u_int h, u_int b, u_int s, u_int f, u_int r)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
alpha_mb();
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_LONG_OFFSET(off)), 4)) return ~0;
return SPARSE_READ_LONG(sc->cfg0_base, off);
}
static void
apecs_swiz_cfgwriteb(u_int h, u_int b, u_int s, u_int f, u_int r, u_int8_t data)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_BYTE_OFFSET(off)), 1)) return;
SPARSE_WRITE_BYTE(sc->cfg0_base, off, data);
alpha_wmb();
}
static void
apecs_swiz_cfgwritew(u_int h, u_int b, u_int s, u_int f, u_int r, u_int16_t data)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_WORD_OFFSET(off)), 2)) return;
SPARSE_WRITE_WORD(sc->cfg0_base, off, data);
alpha_wmb();
}
static void
apecs_swiz_cfgwritel(u_int h, u_int b, u_int s, u_int f, u_int r, u_int32_t data)
{
struct apecs_softc* sc = APECS_SOFTC(apecs0);
vm_offset_t off = APECS_SWIZ_CFGOFF(b, s, f, r);
if (badaddr((caddr_t)(sc->cfg0_base + SPARSE_LONG_OFFSET(off)), 4)) return;
SPARSE_WRITE_LONG(sc->cfg0_base, off, data);
alpha_wmb();
}
#endif
static vm_offset_t
apecs_cvt_dense(vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (addr | APECS_PCI_DENSE);
}
static u_int64_t
apecs_read_hae(void)
{
return apecs_hae_mem & 0xf8000000;
}
static void
apecs_write_hae(u_int64_t hae)
{
u_int32_t pa = hae;
apecs_swiz_set_hae_mem(&pa);
}
static int apecs_probe(device_t dev);
static int apecs_attach(device_t dev);
static struct resource *apecs_alloc_resource(device_t bus, device_t child,
int type, int *rid, u_long start,
u_long end, u_long count,
u_int flags);
static int apecs_release_resource(device_t bus, device_t child,
int type, int rid, struct resource *r);
static int apecs_setup_intr(device_t dev, device_t child,
struct resource *irq, int flags,
driver_intr_t *intr, void *arg, void **cookiep);
static int apecs_teardown_intr(device_t dev, device_t child,
struct resource *irq, void *cookie);
static device_method_t apecs_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, apecs_probe),
DEVMETHOD(device_attach, apecs_attach),
/* Bus interface */
DEVMETHOD(bus_alloc_resource, apecs_alloc_resource),
DEVMETHOD(bus_release_resource, apecs_release_resource),
DEVMETHOD(bus_activate_resource, pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, pci_deactivate_resource),
DEVMETHOD(bus_setup_intr, apecs_setup_intr),
DEVMETHOD(bus_teardown_intr, apecs_teardown_intr),
{ 0, 0 }
};
static driver_t apecs_driver = {
"apecs",
apecs_methods,
sizeof(struct apecs_softc),
};
#define APECS_SGMAP_BASE (8*1024*1024)
#define APECS_SGMAP_SIZE (8*1024*1024)
static void
apecs_sgmap_invalidate(void)
{
alpha_mb();
REGVAL(EPIC_TBIA) = 0;
alpha_mb();
}
static void
apecs_sgmap_map(void *arg, vm_offset_t ba, vm_offset_t pa)
{
u_int64_t *sgtable = arg;
int index = alpha_btop(ba - APECS_SGMAP_BASE);
if (pa) {
if (pa > (1L<<32))
panic("apecs_sgmap_map: can't map address 0x%lx", pa);
sgtable[index] = ((pa >> 13) << 1) | 1;
} else {
sgtable[index] = 0;
}
alpha_mb();
apecs_sgmap_invalidate();
}
static void
apecs_init_sgmap(void)
{
void *sgtable;
/*
* First setup Window 0 to map 8Mb to 16Mb with an
* sgmap. Allocate the map aligned to a 32 boundary.
*/
REGVAL(EPIC_PCI_BASE_1) = APECS_SGMAP_BASE |
EPIC_PCI_BASE_SGEN | EPIC_PCI_BASE_WENB;
alpha_mb();
REGVAL(EPIC_PCI_MASK_1) = EPIC_PCI_MASK_8M;
alpha_mb();
sgtable = contigmalloc(8192, M_DEVBUF, M_NOWAIT,
0, (1L<<34),
32*1024, (1L<<34));
if (!sgtable)
panic("apecs_init_sgmap: can't allocate page table");
REGVAL(EPIC_TBASE_1) =
(pmap_kextract((vm_offset_t) sgtable) >> EPIC_TBASE_SHIFT);
chipset.sgmap = sgmap_map_create(APECS_SGMAP_BASE,
APECS_SGMAP_BASE + APECS_SGMAP_SIZE,
apecs_sgmap_map, sgtable);
}
void
apecs_init()
{
static int initted = 0;
if (initted) return;
initted = 1;
if (platform.pci_intr_init)
platform.pci_intr_init();
chipset = apecs_swiz_chipset;
}
static int
apecs_probe(device_t dev)
{
int memwidth;
if (apecs0)
return ENXIO;
apecs0 = dev;
memwidth = (REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64;
if(memwidth == 64){
device_set_desc(dev, "DECchip 21071 Core Logic chipset");
} else {
device_set_desc(dev, "DECchip 21072 Core Logic chipset");
}
apecs_hae_mem = REGVAL(EPIC_HAXR1);
pci_init_resources();
isa_init_intr();
apecs_init_sgmap();
device_add_child(dev, "pcib", 0, 0);
return 0;
}
static int
apecs_attach(device_t dev)
{
struct apecs_softc* sc = APECS_SOFTC(dev);
apecs_init();
sc->dmem_base = APECS_PCI_DENSE;
sc->smem_base = APECS_PCI_SPARSE;
sc->io_base = APECS_PCI_SIO;
sc->cfg0_base = KV(APECS_PCI_CONF);
sc->cfg1_base = NULL;
set_iointr(alpha_dispatch_intr);
snprintf(chipset_type, sizeof(chipset_type), "apecs");
chipset_bwx = 0;
chipset_ports = APECS_PCI_SIO;
chipset_memory = APECS_PCI_SPARSE;
chipset_dense = APECS_PCI_DENSE;
chipset_hae_mask = EPIC_HAXR1_EADDR;
bus_generic_attach(dev);
return 0;
}
static struct resource *
apecs_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
if (type == SYS_RES_IRQ)
return isa_alloc_intr(bus, child, start);
else
return pci_alloc_resource(bus, child, type, rid,
start, end, count, flags);
}
static int
apecs_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
if (type == SYS_RES_IRQ)
return isa_release_intr(bus, child, r);
else
return pci_release_resource(bus, child, type, rid, r);
}
static int
apecs_setup_intr(device_t dev, device_t child,
struct resource *irq, int flags,
driver_intr_t *intr, void *arg, void **cookiep)
{
int error;
/*
* the avanti routes interrupts through the isa interrupt
* controller, so we need to special case it
*/
if(hwrpb->rpb_type == ST_DEC_2100_A50)
return isa_setup_intr(dev, child, irq, flags,
intr, arg, cookiep);
error = rman_activate_resource(irq);
if (error)
return error;
error = alpha_setup_intr(0x900 + (irq->r_start << 4),
intr, arg, cookiep,
&intrcnt[INTRCNT_EB64PLUS_IRQ + irq->r_start]);
if (error)
return error;
/* Enable PCI interrupt */
platform.pci_intr_enable(irq->r_start);
return 0;
}
static int
apecs_teardown_intr(device_t dev, device_t child,
struct resource *irq, void *cookie)
{
/*
* the avanti routes interrupts through the isa interrupt
* controller, so we need to special case it
*/
if(hwrpb->rpb_type == ST_DEC_2100_A50)
return isa_teardown_intr(dev, child, irq, cookie);
alpha_teardown_intr(cookie);
return rman_deactivate_resource(irq);
}
DRIVER_MODULE(apecs, root, apecs_driver, apecs_devclass, 0, 0);