freebsd-nq/sys/sparc64/pci/psycho.c
Thomas Moestl 4b5504494d Add code to print the fault virtual address for uncorrectable DMA errors
caused by IOMMU misses to aid debugging. This will only work on
UltraSPARC-IIi and IIe.
2002-03-23 20:42:23 +00:00

1327 lines
38 KiB
C

/*
* Copyright (c) 1999, 2000 Matthew R. Green
* All rights reserved.
* Copyright 2001 by Thomas Moestl <tmm@FreeBSD.org>. 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* from: NetBSD: psycho.c,v 1.39 2001/10/07 20:30:41 eeh Exp
*
* $FreeBSD$
*/
/*
* Support for `psycho' and `psycho+' UPA to PCI bridge and
* UltraSPARC IIi and IIe `sabre' PCI controllers.
*/
#include "opt_psycho.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <ofw/openfirm.h>
#include <ofw/ofw_pci.h>
#include <machine/bus.h>
#include <machine/iommureg.h>
#include <machine/bus_common.h>
#include <machine/frame.h>
#include <machine/intr_machdep.h>
#include <machine/nexusvar.h>
#include <machine/ofw_upa.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <machine/iommuvar.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <sparc64/pci/ofw_pci.h>
#include <sparc64/pci/psychoreg.h>
#include <sparc64/pci/psychovar.h>
#include "pcib_if.h"
#include "sparcbus_if.h"
static void psycho_get_ranges(phandle_t, struct upa_ranges **, int *);
static void psycho_set_intr(struct psycho_softc *, int, device_t, bus_addr_t,
int, driver_intr_t);
static int psycho_find_intrmap(struct psycho_softc *, int, bus_addr_t *,
bus_addr_t *, u_long *);
static void psycho_intr_stub(void *);
#ifdef PSYCHO_STRAY
static void psycho_intr_stray(void *);
#endif
static bus_space_tag_t psycho_alloc_bus_tag(struct psycho_softc *, int);
/* Interrupt handlers */
static void psycho_ue(void *);
static void psycho_ce(void *);
static void psycho_bus_a(void *);
static void psycho_bus_b(void *);
static void psycho_powerfail(void *);
#ifdef PSYCHO_MAP_WAKEUP
static void psycho_wakeup(void *);
#endif
/* IOMMU support */
static void psycho_iommu_init(struct psycho_softc *, int);
/*
* bus space and bus dma support for UltraSPARC `psycho'. note that most
* of the bus dma support is provided by the iommu dvma controller.
*/
static int psycho_dmamap_create(bus_dma_tag_t, int, bus_dmamap_t *);
static int psycho_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
static int psycho_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t,
bus_dmamap_callback_t *, void *, int);
static void psycho_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
static void psycho_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_dmasync_op_t);
static int psycho_dmamem_alloc(bus_dma_tag_t, void **, int, bus_dmamap_t *);
static void psycho_dmamem_free(bus_dma_tag_t, void *, bus_dmamap_t);
/*
* autoconfiguration
*/
static int psycho_probe(device_t);
static int psycho_attach(device_t);
static int psycho_read_ivar(device_t, device_t, int, u_long *);
static int psycho_setup_intr(device_t, device_t, struct resource *, int,
driver_intr_t *, void *, void **);
static int psycho_teardown_intr(device_t, device_t, struct resource *, void *);
static struct resource *psycho_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
static int psycho_activate_resource(device_t, device_t, int, int,
struct resource *);
static int psycho_deactivate_resource(device_t, device_t, int, int,
struct resource *);
static int psycho_release_resource(device_t, device_t, int, int,
struct resource *);
static int psycho_maxslots(device_t);
static u_int32_t psycho_read_config(device_t, u_int, u_int, u_int, u_int, int);
static void psycho_write_config(device_t, u_int, u_int, u_int, u_int, u_int32_t,
int);
static int psycho_route_interrupt(device_t, device_t, int);
static int psycho_intr_pending(device_t, int);
static bus_space_handle_t psycho_get_bus_handle(device_t dev, enum sbbt_id id,
bus_space_handle_t childhdl, bus_space_tag_t *tag);
static device_method_t psycho_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, psycho_probe),
DEVMETHOD(device_attach, psycho_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, psycho_read_ivar),
DEVMETHOD(bus_setup_intr, psycho_setup_intr),
DEVMETHOD(bus_teardown_intr, psycho_teardown_intr),
DEVMETHOD(bus_alloc_resource, psycho_alloc_resource),
DEVMETHOD(bus_activate_resource, psycho_activate_resource),
DEVMETHOD(bus_deactivate_resource, psycho_deactivate_resource),
DEVMETHOD(bus_release_resource, psycho_release_resource),
/* pcib interface */
DEVMETHOD(pcib_maxslots, psycho_maxslots),
DEVMETHOD(pcib_read_config, psycho_read_config),
DEVMETHOD(pcib_write_config, psycho_write_config),
DEVMETHOD(pcib_route_interrupt, psycho_route_interrupt),
/* sparcbus interface */
DEVMETHOD(sparcbus_intr_pending, psycho_intr_pending),
DEVMETHOD(sparcbus_get_bus_handle, psycho_get_bus_handle),
{ 0, 0 }
};
static driver_t psycho_driver = {
"pcib",
psycho_methods,
sizeof(struct psycho_softc),
};
static devclass_t psycho_devclass;
DRIVER_MODULE(psycho, nexus, psycho_driver, psycho_devclass, 0, 0);
static int psycho_ndevs;
static struct psycho_softc *psycho_softcs[4];
struct psycho_clr {
struct psycho_softc *pci_sc;
bus_addr_t pci_clr; /* clear register */
driver_intr_t *pci_handler; /* handler to call */
void *pci_arg; /* argument for the handler */
void *pci_cookie; /* interrupt cookie of parent bus */
};
struct psycho_strayclr {
struct psycho_softc *psc_sc;
bus_addr_t psc_clr; /* clear register */
};
#define PSYCHO_READ8(sc, off) \
bus_space_read_8((sc)->sc_bustag, (sc)->sc_bushandle, (off))
#define PSYCHO_WRITE8(sc, off, v) \
bus_space_write_8((sc)->sc_bustag, (sc)->sc_bushandle, (off), (v))
#define PCICTL_READ8(sc, off) \
PSYCHO_READ8((sc), (sc)->sc_pcictl + (off))
#define PCICTL_WRITE8(sc, off, v) \
PSYCHO_WRITE8((sc), (sc)->sc_pcictl + (off), (v))
/*
* "sabre" is the UltraSPARC IIi onboard UPA to PCI bridge. It manages a
* single PCI bus and does not have a streaming buffer. It often has an APB
* (advanced PCI bridge) connected to it, which was designed specifically for
* the IIi. The APB let's the IIi handle two independednt PCI buses, and
* appears as two "simba"'s underneath the sabre.
*
* "psycho" and "psycho+" is a dual UPA to PCI bridge. It sits on the UPA bus
* and manages two PCI buses. "psycho" has two 64-bit 33MHz buses, while
* "psycho+" controls both a 64-bit 33Mhz and a 64-bit 66Mhz PCI bus. You
* will usually find a "psycho+" since I don't think the original "psycho"
* ever shipped, and if it did it would be in the U30.
*
* Each "psycho" PCI bus appears as a separate OFW node, but since they are
* both part of the same IC, they only have a single register space. As such,
* they need to be configured together, even though the autoconfiguration will
* attach them separately.
*
* On UltraIIi machines, "sabre" itself usually takes pci0, with "simba" often
* as pci1 and pci2, although they have been implemented with other PCI bus
* numbers on some machines.
*
* On UltraII machines, there can be any number of "psycho+" ICs, each
* providing two PCI buses.
*
*
* XXXX The psycho/sabre node has an `interrupts' attribute. They contain
* the values of the following interrupts in this order:
*
* PCI Bus Error (30)
* DMA UE (2e)
* DMA CE (2f)
* Power Fail (25)
*
* We really should attach handlers for each.
*/
#define OFW_PCI_TYPE "pci"
#define OFW_SABRE_MODEL "SUNW,sabre"
#define OFW_SABRE_COMPAT "pci108e,a001"
#define OFW_SIMBA_MODEL "SUNW,simba"
#define OFW_PSYCHO_MODEL "SUNW,psycho"
static int
psycho_probe(device_t dev)
{
phandle_t node;
char *dtype, *model;
static char compat[32];
node = nexus_get_node(dev);
if (OF_getprop(node, "compatible", compat, sizeof(compat)) == -1)
compat[0] = '\0';
dtype = nexus_get_device_type(dev);
model = nexus_get_model(dev);
/* match on a type of "pci" and a sabre or a psycho */
if (nexus_get_reg(dev) != NULL && dtype != NULL &&
strcmp(dtype, OFW_PCI_TYPE) == 0 &&
((model != NULL && (strcmp(model, OFW_SABRE_MODEL) == 0 ||
strcmp(model, OFW_PSYCHO_MODEL) == 0)) ||
strcmp(compat, OFW_SABRE_COMPAT) == 0)) {
device_set_desc(dev, "U2P UPA-PCI bridge");
return (0);
}
return (ENXIO);
}
/*
* SUNW,psycho initialisation ..
* - find the per-psycho registers
* - figure out the IGN.
* - find our partner psycho
* - configure ourselves
* - bus range, bus,
* - interrupt map,
* - setup the chipsets.
* - if we're the first of the pair, initialise the IOMMU, otherwise
* just copy it's tags and addresses.
*/
static int
psycho_attach(device_t dev)
{
struct psycho_softc *sc;
struct psycho_softc *osc = NULL;
struct psycho_softc *asc;
struct upa_regs *reg;
char compat[32];
char *model;
phandle_t node;
u_int64_t csr;
u_long pcictl_offs, mlen;
int psycho_br[2];
int n, i, nreg, rid;
#if defined(PSYCHO_DEBUG) || defined(PSYCHO_STRAY)
bus_addr_t map, clr;
u_int64_t mr;
#endif
#ifdef PSYCHO_STRAY
struct psycho_strayclr *sclr;
#endif
node = nexus_get_node(dev);
sc = device_get_softc(dev);
if (OF_getprop(node, "compatible", compat, sizeof(compat)) == -1)
compat[0] = '\0';
sc->sc_node = node;
sc->sc_dev = dev;
sc->sc_dmatag = nexus_get_dmatag(dev);
/*
* call the model-specific initialisation routine.
*/
model = nexus_get_model(dev);
if ((model != NULL &&
strcmp(model, OFW_SABRE_MODEL) == 0) ||
strcmp(compat, OFW_SABRE_COMPAT) == 0) {
sc->sc_mode = PSYCHO_MODE_SABRE;
if (model == NULL)
model = "sabre";
} else if (model != NULL &&
strcmp(model, OFW_PSYCHO_MODEL) == 0)
sc->sc_mode = PSYCHO_MODE_PSYCHO;
else
panic("psycho_attach: unknown model!");
/*
* The psycho gets three register banks:
* (0) per-PBM configuration and status registers
* (1) per-PBM PCI configuration space, containing only the
* PBM 256-byte PCI header
* (2) the shared psycho configuration registers (struct psychoreg)
*
* XXX use the prom address for the psycho registers? we do so far.
*/
reg = nexus_get_reg(dev);
nreg = nexus_get_nreg(dev);
/* Register layouts are different. stuupid. */
if (sc->sc_mode == PSYCHO_MODE_PSYCHO) {
if (nreg <= 2)
panic("psycho_attach: %d not enough registers", nreg);
sc->sc_basepaddr = (vm_offset_t)UPA_REG_PHYS(&reg[2]);
mlen = UPA_REG_SIZE(&reg[2]);
pcictl_offs = UPA_REG_PHYS(&reg[0]);
} else {
if (nreg <= 0)
panic("psycho_attach: %d not enough registers", nreg);
sc->sc_basepaddr = (vm_offset_t)UPA_REG_PHYS(&reg[0]);
mlen = UPA_REG_SIZE(reg);
pcictl_offs = sc->sc_basepaddr + PSR_PCICTL0;
}
/*
* Match other psycho's that are already configured against
* the base physical address. This will be the same for a
* pair of devices that share register space.
*/
for (n = 0; n < psycho_ndevs && n < sizeof(psycho_softcs) /
sizeof(psycho_softcs[0]); n++) {
asc = (struct psycho_softc *)psycho_softcs[n];
if (asc == NULL || asc == sc)
/* This entry is not there or it is me */
continue;
if (asc->sc_basepaddr != sc->sc_basepaddr)
/* This is an unrelated psycho */
continue;
/* Found partner */
osc = asc;
break;
}
if (osc == NULL) {
rid = 0;
sc->sc_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
sc->sc_basepaddr, sc->sc_basepaddr + mlen - 1, mlen,
RF_ACTIVE);
if (sc->sc_mem_res == NULL ||
rman_get_start(sc->sc_mem_res) != sc->sc_basepaddr)
panic("psycho_attach: can't allocate device memory");
sc->sc_bustag = rman_get_bustag(sc->sc_mem_res);
sc->sc_bushandle = rman_get_bushandle(sc->sc_mem_res);
} else {
/*
* There's another psycho using the same register space. Copy the
* relevant stuff.
*/
sc->sc_mem_res = NULL;
sc->sc_bustag = osc->sc_bustag;
sc->sc_bushandle = osc->sc_bushandle;
}
if (pcictl_offs < sc->sc_basepaddr)
panic("psycho_attach: bogus pci control register location");
sc->sc_pcictl = pcictl_offs - sc->sc_basepaddr;
csr = PSYCHO_READ8(sc, PSR_CS);
sc->sc_ign = 0x7c0; /* APB IGN is always 0x7c */
if (sc->sc_mode == PSYCHO_MODE_PSYCHO)
sc->sc_ign = PSYCHO_GCSR_IGN(csr) << 6;
device_printf(dev, "%s: impl %d, version %d: ign %x ",
model, (int)PSYCHO_GCSR_IMPL(csr), (int)PSYCHO_GCSR_VERS(csr),
sc->sc_ign);
/*
* Setup the PCI control register
*/
csr = PCICTL_READ8(sc, PCR_CS);
csr |= PCICTL_MRLM | PCICTL_ARB_PARK | PCICTL_ERRINTEN | PCICTL_4ENABLE;
csr &= ~(PCICTL_SERR | PCICTL_CPU_PRIO | PCICTL_ARB_PRIO |
PCICTL_RTRYWAIT);
PCICTL_WRITE8(sc, PCR_CS, csr);
/* grab the psycho ranges */
psycho_get_ranges(sc->sc_node, &sc->sc_range, &sc->sc_nrange);
/* get the bus-range for the psycho */
n = OF_getprop(node, "bus-range", (void *)psycho_br, sizeof(psycho_br));
if (n == -1)
panic("could not get psycho bus-range");
if (n != sizeof(psycho_br))
panic("broken psycho bus-range (%d)", n);
printf("bus range %u to %u; PCI bus %d\n", psycho_br[0], psycho_br[1],
psycho_br[0]);
sc->sc_busno = psycho_br[0];
/* Initialize memory and i/o rmans */
sc->sc_io_rman.rm_type = RMAN_ARRAY;
sc->sc_io_rman.rm_descr = "Psycho PCI I/O Ports";
if (rman_init(&sc->sc_io_rman) != 0 ||
rman_manage_region(&sc->sc_io_rman, 0, PSYCHO_IO_SIZE) != 0)
panic("psycho_probe: failed to set up i/o rman");
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "Psycho PCI Memory";
if (rman_init(&sc->sc_mem_rman) != 0 ||
rman_manage_region(&sc->sc_mem_rman, 0, PSYCHO_MEM_SIZE) != 0)
panic("psycho_probe: failed to set up memory rman");
/*
* Find the addresses of the various bus spaces.
* There should not be multiple ones of one kind.
* The physical start addresses of the ranges are the configuration,
* memory and IO handles.
*/
for (n = 0; n < sc->sc_nrange; n++) {
i = UPA_RANGE_CS(&sc->sc_range[n]);
if (sc->sc_bh[i] != 0)
panic("psycho_attach: duplicate range for space %d", i);
sc->sc_bh[i] = UPA_RANGE_PHYS(&sc->sc_range[n]);
}
/*
* Check that all needed handles are present. The PCI_CS_MEM64 one is
* not currently used.
*/
for (n = 0; n < 3; n++) {
if (sc->sc_bh[n] == 0)
panic("psycho_attach: range %d missing", n);
}
/* allocate our tags */
sc->sc_memt = psycho_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE);
sc->sc_iot = psycho_alloc_bus_tag(sc, PCI_IO_BUS_SPACE);
sc->sc_cfgt = psycho_alloc_bus_tag(sc, PCI_CONFIG_BUS_SPACE);
if (bus_dma_tag_create(sc->sc_dmatag, 8, 1, 0, 0x3ffffffff, NULL, NULL,
0x3ffffffff, 0xff, 0xffffffff, 0, &sc->sc_dmat) != 0)
panic("psycho_attach: bus_dma_tag_create failed");
/* Customize the tag */
sc->sc_dmat->cookie = sc;
sc->sc_dmat->dmamap_create = psycho_dmamap_create;
sc->sc_dmat->dmamap_destroy = psycho_dmamap_destroy;
sc->sc_dmat->dmamap_load = psycho_dmamap_load;
sc->sc_dmat->dmamap_unload = psycho_dmamap_unload;
sc->sc_dmat->dmamap_sync = psycho_dmamap_sync;
sc->sc_dmat->dmamem_alloc = psycho_dmamem_alloc;
sc->sc_dmat->dmamem_free = psycho_dmamem_free;
/* XXX: register as root dma tag (kluge). */
sparc64_root_dma_tag = sc->sc_dmat;
if ((sc->sc_nintrmap = OF_getprop_alloc(sc->sc_node, "interrupt-map",
sizeof(*sc->sc_intrmap), (void **)&sc->sc_intrmap)) == -1 ||
OF_getprop(sc->sc_node, "interrupt-map-mask", &sc->sc_intrmapmsk,
sizeof(sc->sc_intrmapmsk)) == -1) {
if (sc->sc_intrmap != NULL) {
free(sc->sc_intrmap, M_OFWPROP);
sc->sc_intrmap = NULL;
}
}
/* Register the softc, this is needed for paired psychos. */
if (psycho_ndevs < sizeof(psycho_softcs) / sizeof(psycho_softcs[0]))
psycho_softcs[psycho_ndevs] = sc;
else
device_printf(dev, "XXX: bump the number of psycho_softcs");
psycho_ndevs++;
/*
* And finally, if we're a sabre or the first of a pair of psycho's to
* arrive here, start up the IOMMU and get a config space tag.
*/
if (osc == NULL) {
/*
* Establish handlers for interesting interrupts....
*
* XXX We need to remember these and remove this to support
* hotplug on the UPA/FHC bus.
*
* XXX Not all controllers have these, but installing them
* is better than trying to sort through this mess.
*/
psycho_set_intr(sc, 0, dev, PSR_UE_INT_MAP, INTR_FAST,
psycho_ue);
psycho_set_intr(sc, 1, dev, PSR_CE_INT_MAP, 0, psycho_ce);
psycho_set_intr(sc, 2, dev, PSR_PCIAERR_INT_MAP, INTR_FAST,
psycho_bus_a);
psycho_set_intr(sc, 3, dev, PSR_PCIBERR_INT_MAP, INTR_FAST,
psycho_bus_b);
psycho_set_intr(sc, 4, dev, PSR_POWER_INT_MAP, INTR_FAST,
psycho_powerfail);
#ifdef PSYCHO_MAP_WAKEUP
/*
* On some models, this is mapped to the same interrupt as
* pciberr by default, so leave it alone for now since
* psycho_wakeup() doesn't do anything useful anyway.
*/
psycho_set_intr(sc, 5, dev, PSR_PWRMGT_INT_MAP, 0,
psycho_wakeup);
#endif /* PSYCHO_MAP_WAKEUP */
/* Initialize the counter-timer if we handle a psycho. */
if (sc->sc_mode == PSYCHO_MODE_PSYCHO) {
sparc64_counter_init(sc->sc_bustag, sc->sc_bushandle,
PSR_TC0);
}
/*
* Setup IOMMU and PCI configuration if we're the first
* of a pair of psycho's to arrive here.
*
* We should calculate a TSB size based on amount of RAM
* and number of bus controllers and number an type of
* child devices.
*
* For the moment, 32KB should be more than enough.
*/
sc->sc_is = malloc(sizeof(struct iommu_state), M_DEVBUF,
M_NOWAIT);
if (sc->sc_is == NULL)
panic("psycho_attach: malloc iommu_state failed");
sc->sc_is->is_sb[0] = 0;
sc->sc_is->is_sb[1] = 0;
if (OF_getproplen(sc->sc_node, "no-streaming-cache") < 0)
sc->sc_is->is_sb[0] = sc->sc_pcictl + PCR_STRBUF;
psycho_iommu_init(sc, 2);
} else {
/* Just copy IOMMU state, config tag and address */
sc->sc_is = osc->sc_is;
if (OF_getproplen(sc->sc_node, "no-streaming-cache") < 0)
sc->sc_is->is_sb[1] = sc->sc_pcictl + PCR_STRBUF;
iommu_reset(sc->sc_is);
}
/*
* Enable all interrupts, clear all interrupt states, and install an
* interrupt handler for OBIO interrupts, which can be ISA ones
* (to frob the interrupt clear registers).
* This aids the debugging of interrupt routing problems, and is needed
* for isa drivers that use isa_irq_pending (otherwise the registers
* will never be cleared).
*/
#if defined(PSYCHO_DEBUG) || defined(PSYCHO_STRAY)
for (map = PSR_PCIA0_INT_MAP, clr = PSR_PCIA0_INT_CLR, n = 0;
map <= PSR_PCIB3_INT_MAP; map += 8, clr += 32, n++) {
mr = PSYCHO_READ8(sc, map);
#ifdef PSYCHO_DEBUG
device_printf(dev, "intr map (pci) %d: %#lx\n", n, (u_long)mr);
#endif
PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V);
for (i = 0; i < 4; i++)
PCICTL_WRITE8(sc, clr + i * 8, 0);
PSYCHO_WRITE8(sc, map, mr | INTMAP_V);
}
for (map = PSR_SCSI_INT_MAP, clr = PSR_SCSI_INT_CLR, n = 0;
map <= PSR_FFB1_INT_MAP; map += 8, clr += 8, n++) {
mr = PSYCHO_READ8(sc, map);
#ifdef PSYCHO_DEBUG
device_printf(dev, "intr map (obio) %d: %#lx, clr: %#lx\n", n,
(u_long)mr, (u_long)clr);
#endif
PSYCHO_WRITE8(sc, map, mr & ~INTMAP_V);
PSYCHO_WRITE8(sc, clr, 0);
#ifdef PSYCHO_STRAY
/*
* This can cause interrupt storms, and is therefore disabled
* by default.
* XXX: use intr_setup() to not confuse higher level code
*/
if (INTVEC(mr) != 0x7e6 && INTVEC(mr) != 0x7e7 &&
INTVEC(mr) != 0) {
sclr = malloc(sizeof(*sclr), M_DEVBUF, M_WAITOK);
sclr->psc_sc = sc;
sclr->psc_clr = clr;
intr_setup(PIL_LOW, intr_dequeue, INTVEC(mr),
psycho_intr_stray, sclr);
}
#endif
PSYCHO_WRITE8(sc, map, mr | INTMAP_V);
}
#endif
/*
* Initialize the interrupt registers of all devices hanging from
* the host bridge directly or indirectly via PCI-PCI bridges.
* The MI code (and the PCI spec) assume that this is done during
* system initialization, however the firmware does not do this
* at least on some models, and we probably shouldn't trust that
* the firmware uses the same model as this driver if it does.
*/
ofw_pci_init_intr(dev, sc->sc_node, sc->sc_intrmap, sc->sc_nintrmap,
&sc->sc_intrmapmsk);
device_add_child(dev, "pci", device_get_unit(dev));
return (bus_generic_attach(dev));
}
static void
psycho_set_intr(struct psycho_softc *sc, int index,
device_t dev, bus_addr_t map, int iflags, driver_intr_t handler)
{
int rid, vec;
u_int64_t mr;
mr = PSYCHO_READ8(sc, map);
vec = INTVEC(mr);
sc->sc_irq_res[index] = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
vec, vec, 1, RF_ACTIVE);
if (sc->sc_irq_res[index] == NULL)
panic("psycho_set_intr: failed to get interrupt");
bus_setup_intr(dev, sc->sc_irq_res[index], INTR_TYPE_MISC | iflags,
handler, sc, &sc->sc_ihand[index]);
PSYCHO_WRITE8(sc, map, mr | INTMAP_V);
}
static int
psycho_find_intrmap(struct psycho_softc *sc, int ino, bus_addr_t *intrmapptr,
bus_addr_t *intrclrptr, bus_addr_t *intrdiagptr)
{
bus_addr_t intrmap, intrclr;
u_int64_t im;
u_long diag;
int found;
found = 0;
/* Hunt thru obio first */
diag = PSYCHO_READ8(sc, PSR_OBIO_INT_DIAG);
for (intrmap = PSR_SCSI_INT_MAP, intrclr = PSR_SCSI_INT_CLR;
intrmap <= PSR_FFB1_INT_MAP; intrmap += 8, intrclr += 8,
diag >>= 2) {
im = PSYCHO_READ8(sc, intrmap);
if (INTINO(im) == ino) {
diag &= 2;
found = 1;
break;
}
}
if (!found) {
diag = PSYCHO_READ8(sc, PSR_PCI_INT_DIAG);
/* Now do PCI interrupts */
for (intrmap = PSR_PCIA0_INT_MAP, intrclr = PSR_PCIA0_INT_CLR;
intrmap <= PSR_PCIB3_INT_MAP; intrmap += 8, intrclr += 32,
diag >>= 8) {
im = PSYCHO_READ8(sc, intrmap);
if (((im ^ ino) & 0x3c) == 0) {
intrclr += 8 * (ino & 3);
diag = (diag >> ((ino & 3) * 2)) & 2;
found = 1;
break;
}
}
}
if (intrmapptr != NULL)
*intrmapptr = intrmap;
if (intrclrptr != NULL)
*intrclrptr = intrclr;
if (intrdiagptr != NULL)
*intrdiagptr = diag;
return (found);
}
/* grovel the OBP for various psycho properties */
static void
psycho_get_ranges(phandle_t node, struct upa_ranges **rp, int *np)
{
*np = OF_getprop_alloc(node, "ranges", sizeof(**rp), (void **)rp);
if (*np == -1)
panic("could not get psycho ranges");
}
/*
* Interrupt handlers.
*/
static void
psycho_ue(void *arg)
{
struct psycho_softc *sc = (struct psycho_softc *)arg;
u_int64_t afar, afsr;
afar = PSYCHO_READ8(sc, PSR_UE_AFA);
afsr = PSYCHO_READ8(sc, PSR_UE_AFS);
/*
* On the UltraSPARC-IIi/IIe, IOMMU misses/protection faults cause
* the AFAR to be set to the physical address of the TTE entry that
* was invalid/write protected. Call into the iommu code to have
* them decoded to virtual IO addresses.
*/
if ((afsr & UEAFSR_P_DTE) != 0)
iommu_decode_fault(sc->sc_is, afar);
/* It's uncorrectable. Dump the regs and panic. */
panic("%s: uncorrectable DMA error AFAR %#lx AFSR %#lx\n",
device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr);
}
static void
psycho_ce(void *arg)
{
struct psycho_softc *sc = (struct psycho_softc *)arg;
u_int64_t afar, afsr;
PSYCHO_WRITE8(sc, PSR_CE_INT_CLR, 0);
afar = PSYCHO_READ8(sc, PSR_CE_AFA);
afsr = PSYCHO_READ8(sc, PSR_CE_AFS);
/* It's correctable. Dump the regs and continue. */
printf("%s: correctable DMA error AFAR %#lx AFSR %#lx\n",
device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr);
}
static void
psycho_bus_a(void *arg)
{
struct psycho_softc *sc = (struct psycho_softc *)arg;
u_int64_t afar, afsr;
afar = PSYCHO_READ8(sc, PSR_PCICTL0 + PCR_AFA);
afsr = PSYCHO_READ8(sc, PSR_PCICTL0 + PCR_AFS);
/* It's uncorrectable. Dump the regs and panic. */
panic("%s: PCI bus A error AFAR %#lx AFSR %#lx\n",
device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr);
}
static void
psycho_bus_b(void *arg)
{
struct psycho_softc *sc = (struct psycho_softc *)arg;
u_int64_t afar, afsr;
afar = PSYCHO_READ8(sc, PSR_PCICTL1 + PCR_AFA);
afsr = PSYCHO_READ8(sc, PSR_PCICTL1 + PCR_AFS);
/* It's uncorrectable. Dump the regs and panic. */
panic("%s: PCI bus B error AFAR %#lx AFSR %#lx\n",
device_get_name(sc->sc_dev), (u_long)afar, (u_long)afsr);
}
static void
psycho_powerfail(void *arg)
{
/* We lost power. Try to shut down NOW. */
#ifdef DEBUGGER_ON_POWERFAIL
struct psycho_softc *sc = (struct psycho_softc *)arg;
Debugger("powerfail");
PSYCHO_WRITE8(sc, PSR_POWER_INT_CLR, 0);
#else
printf("Power Failure Detected: Shutting down NOW.\n");
shutdown_nice(0);
#endif
}
#ifdef PSYCHO_MAP_WAKEUP
static void
psycho_wakeup(void *arg)
{
struct psycho_softc *sc = (struct psycho_softc *)arg;
PSYCHO_WRITE8(sc, PSR_PWRMGT_INT_CLR, 0);
/* Gee, we don't really have a framework to deal with this properly. */
printf("%s: power management wakeup\n", device_get_name(sc->sc_dev));
}
#endif /* PSYCHO_MAP_WAKEUP */
/* initialise the IOMMU... */
void
psycho_iommu_init(struct psycho_softc *sc, int tsbsize)
{
char *name;
struct iommu_state *is = sc->sc_is;
u_int32_t iobase = -1;
int *vdma = NULL;
int nitem;
/* punch in our copies */
is->is_bustag = sc->sc_bustag;
is->is_bushandle = sc->sc_bushandle;
is->is_iommu = PSR_IOMMU;
is->is_dtag = PSR_IOMMU_TLB_TAG_DIAG;
is->is_ddram = PSR_IOMMU_TLB_DATA_DIAG;
is->is_dqueue = PSR_IOMMU_QUEUE_DIAG;
is->is_dva = PSR_IOMMU_SVADIAG;
is->is_dtcmp = PSR_IOMMU_TLB_CMP_DIAG;
/*
* Separate the men from the boys. Get the `virtual-dma'
* property for sabre and use that to make sure the damn
* iommu works.
*
* We could query the `#virtual-dma-size-cells' and
* `#virtual-dma-addr-cells' and DTRT, but I'm lazy.
*/
nitem = OF_getprop_alloc(sc->sc_node, "virtual-dma", sizeof(vdma),
(void **)&vdma);
if (nitem > 0) {
iobase = vdma[0];
tsbsize = ffs(vdma[1]);
if (tsbsize < 25 || tsbsize > 31 ||
(vdma[1] & ~(1 << (tsbsize - 1))) != 0) {
printf("bogus tsb size %x, using 7\n", vdma[1]);
tsbsize = 31;
}
tsbsize -= 24;
free(vdma, M_OFWPROP);
}
/* give us a nice name.. */
name = (char *)malloc(32, M_DEVBUF, M_NOWAIT);
if (name == 0)
panic("couldn't malloc iommu name");
snprintf(name, 32, "%s dvma", device_get_name(sc->sc_dev));
iommu_init(name, is, tsbsize, iobase);
}
static int
psycho_maxslots(device_t dev)
{
/*
* XXX: is this correct? At any rate, a number that is too high
* shouldn't do any harm, if only because of the way things are
* handled in psycho_read_config.
*/
return (31);
}
/*
* Keep a table of quirky PCI devices that need fixups before the MI PCI code
* creates the resource lists. This needs to be moved around once other bus
* drivers are added. Moving it to the MI code should maybe be reconsidered
* if one of these devices appear in non-sparc64 boxen. It's likely that not
* all BIOSes/firmwares can deal with them.
*/
struct psycho_dquirk {
u_int32_t dq_devid;
int dq_quirk;
};
/* Quirk types. May be or'ed together. */
#define DQT_BAD_INTPIN 1 /* Intpin reg 0, but intpin used */
static struct psycho_dquirk dquirks[] = {
{ 0x1001108e, DQT_BAD_INTPIN }, /* Sun HME (PCIO func. 1) */
{ 0x1101108e, DQT_BAD_INTPIN }, /* Sun GEM (PCIO2 func. 1) */
{ 0x1102108e, DQT_BAD_INTPIN }, /* Sun FireWire ctl. (PCIO2 func. 2) */
{ 0x1103108e, DQT_BAD_INTPIN }, /* Sun USB ctl. (PCIO2 func. 3) */
};
#define NDQUIRKS (sizeof(dquirks) / sizeof(dquirks[0]))
static u_int32_t
psycho_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
int width)
{
struct psycho_softc *sc;
bus_space_handle_t bh;
u_long offset = 0;
u_int32_t r, devid;
int i;
/*
* The psycho bridge does not tolerate accesses to unconfigured PCI
* devices' or function's config space, so look up the device in the
* firmware device tree first, and if it is not present, return a value
* that will make the detection code think that there is no device here.
* This is ugly...
*/
if (reg == 0 && ofw_pci_find_node(bus, slot, func) == 0)
return (0xffffffff);
sc = (struct psycho_softc *)device_get_softc(dev);
offset = PSYCHO_CONF_OFF(bus, slot, func, reg);
bh = sc->sc_bh[PCI_CS_CONFIG];
switch (width) {
case 1:
r = bus_space_read_1(sc->sc_cfgt, bh, offset);
break;
case 2:
r = bus_space_read_2(sc->sc_cfgt, bh, offset);
break;
case 4:
r = bus_space_read_4(sc->sc_cfgt, bh, offset);
break;
default:
panic("psycho_read_config: bad width");
}
if (reg == PCIR_INTPIN && r == 0) {
/* Check for DQT_BAD_INTPIN quirk. */
devid = psycho_read_config(dev, bus, slot, func,
PCIR_DEVVENDOR, 4);
for (i = 0; i < NDQUIRKS; i++) {
if (dquirks[i].dq_devid == devid) {
/*
* Need to set the intpin to a value != 0 so
* that the MI code will think that this device
* has an interrupt.
* Just use 1 (intpin a) for now. This is, of
* course, bogus, but since interrupts are
* routed in advance, this does not really
* matter.
*/
if ((dquirks[i].dq_quirk & DQT_BAD_INTPIN) != 0)
r = 1;
break;
}
}
}
return (r);
}
static void
psycho_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, u_int32_t val, int width)
{
struct psycho_softc *sc;
bus_space_handle_t bh;
u_long offset = 0;
sc = (struct psycho_softc *)device_get_softc(dev);
offset = PSYCHO_CONF_OFF(bus, slot, func, reg);
bh = sc->sc_bh[PCI_CS_CONFIG];
switch (width) {
case 1:
bus_space_write_1(sc->sc_cfgt, bh, offset, val);
break;
case 2:
bus_space_write_2(sc->sc_cfgt, bh, offset, val);
break;
case 4:
bus_space_write_4(sc->sc_cfgt, bh, offset, val);
break;
default:
panic("psycho_write_config: bad width");
}
}
static int
psycho_route_interrupt(device_t bus, device_t dev, int pin)
{
/*
* Since we preinitialize all interrupt line registers, this should not
* happen for any built-in device.
* Devices on bridges that route interrupts cannot work now - the
* interrupt pin mappings are not known from the firmware...
*/
panic("psycho_route_interrupt");
}
static int
psycho_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)device_get_softc(dev);
switch (which) {
case PCIB_IVAR_BUS:
*result = sc->sc_busno;
return (0);
}
return (ENOENT);
}
/* Write to the correct clr register, and call the actual handler. */
static void
psycho_intr_stub(void *arg)
{
struct psycho_clr *pc;
pc = (struct psycho_clr *)arg;
pc->pci_handler(pc->pci_arg);
PSYCHO_WRITE8(pc->pci_sc, pc->pci_clr, 0);
}
#ifdef PSYCHO_STRAY
/*
* Write to the correct clr register and return. arg is the address of the clear
* register to be used.
* XXX: print a message?
*/
static void
psycho_intr_stray(void *arg)
{
struct psycho_strayclr *sclr = arg;
PSYCHO_WRITE8(sclr->psc_sc, sclr->psc_clr, 0);
}
#endif
static int
psycho_setup_intr(device_t dev, device_t child,
struct resource *ires, int flags, driver_intr_t *intr, void *arg,
void **cookiep)
{
struct psycho_softc *sc;
struct psycho_clr *pc;
bus_addr_t intrmapptr, intrclrptr;
long vec = rman_get_start(ires);
u_int64_t mr;
int ino, error;
sc = (struct psycho_softc *)device_get_softc(dev);
pc = (struct psycho_clr *)malloc(sizeof(*pc), M_DEVBUF, M_NOWAIT);
if (pc == NULL)
return (NULL);
/*
* Hunt through all the interrupt mapping regs to look for our
* interrupt vector.
*
* XXX We only compare INOs rather than IGNs since the firmware may
* not provide the IGN and the IGN is constant for all device on that
* PCI controller. This could cause problems for the FFB/external
* interrupt which has a full vector that can be set arbitrarily.
*/
ino = INTINO(vec);
if (!psycho_find_intrmap(sc, ino, &intrmapptr, &intrclrptr, NULL)) {
printf("Cannot find interrupt vector %lx\n", vec);
free(pc, M_DEVBUF);
return (NULL);
}
#ifdef PSYCHO_DEBUG
device_printf(dev, "psycho_setup_intr: INO %d, map %#lx, clr %#lx\n",
ino, (u_long)intrmapptr, (u_long)intrclrptr);
#endif
pc->pci_sc = sc;
pc->pci_arg = arg;
pc->pci_handler = intr;
pc->pci_clr = intrclrptr;
/* Disable the interrupt while we fiddle with it */
mr = PSYCHO_READ8(sc, intrmapptr);
PSYCHO_WRITE8(sc, intrmapptr, mr & ~INTMAP_V);
error = BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags,
psycho_intr_stub, pc, cookiep);
if (error != 0) {
free(pc, M_DEVBUF);
return (error);
}
pc->pci_cookie = *cookiep;
*cookiep = pc;
/*
* Clear the interrupt, it might have been triggered before it was
* set up.
*/
PSYCHO_WRITE8(sc, intrclrptr, 0);
/*
* Enable the interrupt now we have the handler installed.
* Read the current value as we can't change it besides the
* valid bit so so make sure only this bit is changed.
*/
PSYCHO_WRITE8(sc, intrmapptr, mr | INTMAP_V);
return (error);
}
static int
psycho_teardown_intr(device_t dev, device_t child,
struct resource *vec, void *cookie)
{
struct psycho_clr *pc;
int error;
pc = (struct psycho_clr *)cookie;
error = BUS_TEARDOWN_INTR(device_get_parent(dev), child, vec,
pc->pci_cookie);
/*
* Don't disable the interrupt for now, so that stray interupts get
* detected...
*/
if (error != 0)
free(pc, M_DEVBUF);
return (error);
}
static struct resource *
psycho_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct psycho_softc *sc;
struct resource *rv;
struct rman *rm;
bus_space_tag_t bt;
bus_space_handle_t bh;
int needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
sc = (struct psycho_softc *)device_get_softc(bus);
if (type == SYS_RES_IRQ) {
/*
* XXX: Don't accept blank ranges for now, only single
* interrupts. The other case should not happen with the MI pci
* code...
* XXX: This may return a resource that is out of the range
* that was specified. Is this correct...?
*/
if (start != end)
panic("psycho_alloc_resource: XXX: interrupt range");
start = end |= sc->sc_ign;
return (bus_alloc_resource(bus, type, rid, start, end,
count, flags));
}
switch (type) {
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
bt = sc->sc_memt;
bh = sc->sc_bh[PCI_CS_MEM32];
break;
case SYS_RES_IOPORT:
rm = &sc->sc_io_rman;
bt = sc->sc_iot;
/* XXX: probably should use ranges property here. */
bh = sc->sc_bh[PCI_CS_IO];
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
bh += rman_get_start(rv);
rman_set_bustag(rv, bt);
rman_set_bushandle(rv, bh);
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
}
return (rv);
}
static int
psycho_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
if (type == SYS_RES_IRQ)
return (bus_activate_resource(bus, type, rid, r));
return (rman_activate_resource(r));
}
static int
psycho_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
if (type == SYS_RES_IRQ)
return (bus_deactivate_resource(bus, type, rid, r));
return (rman_deactivate_resource(r));
}
static int
psycho_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
int error;
if (type == SYS_RES_IRQ)
return (bus_release_resource(bus, type, rid, r));
if (rman_get_flags(r) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, r);
if (error)
return error;
}
return (rman_release_resource(r));
}
static int
psycho_intr_pending(device_t dev, int intr)
{
struct psycho_softc *sc;
u_long diag;
sc = (struct psycho_softc *)device_get_softc(dev);
if (!psycho_find_intrmap(sc, intr, NULL, NULL, &diag)) {
printf("psycho_intr_pending: mapping not found for %d\n", intr);
return (0);
}
return (diag != 0);
}
static bus_space_handle_t
psycho_get_bus_handle(device_t dev, enum sbbt_id id,
bus_space_handle_t childhdl, bus_space_tag_t *tag)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)device_get_softc(dev);
switch(id) {
case SBBT_IO:
*tag = sc->sc_iot;
return (sc->sc_bh[PCI_CS_IO] + childhdl);
case SBBT_MEM:
*tag = sc->sc_memt;
return (sc->sc_bh[PCI_CS_MEM32] + childhdl);
default:
panic("psycho_get_bus_handle: illegal space\n");
}
}
/*
* below here is bus space and bus dma support
*/
static bus_space_tag_t
psycho_alloc_bus_tag(struct psycho_softc *sc, int type)
{
bus_space_tag_t bt;
bt = (bus_space_tag_t)malloc(sizeof(struct bus_space_tag), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (bt == NULL)
panic("psycho_alloc_bus_tag: out of memory");
bzero(bt, sizeof *bt);
bt->cookie = sc;
bt->parent = sc->sc_bustag;
bt->type = type;
return (bt);
}
/*
* hooks into the iommu dvma calls.
*/
static int
psycho_dmamem_alloc(bus_dma_tag_t dmat, void **vaddr, int flags, bus_dmamap_t *mapp)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
return (iommu_dvmamem_alloc(dmat, sc->sc_is, vaddr, flags, mapp));
}
static void
psycho_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
iommu_dvmamem_free(dmat, sc->sc_is, vaddr, map);
}
static int
psycho_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
return (iommu_dvmamap_create(dmat, sc->sc_is, flags, mapp));
}
static int
psycho_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
return (iommu_dvmamap_destroy(dmat, sc->sc_is, map));
}
static int
psycho_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
bus_size_t buflen, bus_dmamap_callback_t *callback, void *callback_arg,
int flags)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
return (iommu_dvmamap_load(dmat, sc->sc_is, map, buf, buflen, callback,
callback_arg, flags));
}
static void
psycho_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
iommu_dvmamap_unload(dmat, sc->sc_is, map);
}
static void
psycho_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map,
bus_dmasync_op_t op)
{
struct psycho_softc *sc;
sc = (struct psycho_softc *)dmat->cookie;
iommu_dvmamap_sync(dmat, sc->sc_is, map, op);
}