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/*-
* Copyright (c) 1999, 2000 Matthew R. Green
* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
* Copyright (c) 2005 - 2011 by Marius Strobl <marius@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
* from: FreeBSD: psycho.c 183152 2008-09-18 19:45:22Z marius
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/sparc64/pci/schizo.c 230894 2012-02-01 21:28:13Z marius $");
/*
* Driver for `Schizo' Fireplane/Safari to PCI 2.1, `Tomatillo' JBus to
* PCI 2.2 and `XMITS' Fireplane/Safari to PCI-X bridges
*/
#include "opt_ofw_pci.h"
#include "opt_schizo.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/pcpu.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/timetc.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_pci.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/bus_common.h>
#include <machine/bus_private.h>
#include <machine/fsr.h>
#include <machine/iommureg.h>
#include <machine/iommuvar.h>
#include <machine/resource.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <sparc64/pci/ofw_pci.h>
#include <sparc64/pci/schizoreg.h>
#include <sparc64/pci/schizovar.h>
#include "pcib_if.h"
static const struct schizo_desc *schizo_get_desc(device_t);
static void schizo_set_intr(struct schizo_softc *, u_int, u_int,
driver_filter_t);
static void schizo_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map,
bus_dmasync_op_t op);
static void ichip_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map,
bus_dmasync_op_t op);
static void schizo_intr_enable(void *);
static void schizo_intr_disable(void *);
static void schizo_intr_assign(void *);
static void schizo_intr_clear(void *);
static int schizo_intr_register(struct schizo_softc *sc, u_int ino);
static int schizo_get_intrmap(struct schizo_softc *, u_int,
bus_addr_t *, bus_addr_t *);
static timecounter_get_t schizo_get_timecount;
/* Interrupt handlers */
static driver_filter_t schizo_pci_bus;
static driver_filter_t schizo_ue;
static driver_filter_t schizo_ce;
static driver_filter_t schizo_host_bus;
static driver_filter_t schizo_cdma;
/* IOMMU support */
static void schizo_iommu_init(struct schizo_softc *, int, uint32_t);
/*
* Methods
*/
static device_probe_t schizo_probe;
static device_attach_t schizo_attach;
static bus_read_ivar_t schizo_read_ivar;
static bus_setup_intr_t schizo_setup_intr;
static bus_alloc_resource_t schizo_alloc_resource;
static bus_activate_resource_t schizo_activate_resource;
static bus_adjust_resource_t schizo_adjust_resource;
static bus_get_dma_tag_t schizo_get_dma_tag;
static pcib_maxslots_t schizo_maxslots;
static pcib_read_config_t schizo_read_config;
static pcib_write_config_t schizo_write_config;
static pcib_route_interrupt_t schizo_route_interrupt;
static ofw_bus_get_node_t schizo_get_node;
static ofw_pci_setup_device_t schizo_setup_device;
static device_method_t schizo_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, schizo_probe),
DEVMETHOD(device_attach, schizo_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, schizo_read_ivar),
DEVMETHOD(bus_setup_intr, schizo_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, schizo_alloc_resource),
DEVMETHOD(bus_activate_resource, schizo_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_adjust_resource, schizo_adjust_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_get_dma_tag, schizo_get_dma_tag),
/* pcib interface */
DEVMETHOD(pcib_maxslots, schizo_maxslots),
DEVMETHOD(pcib_read_config, schizo_read_config),
DEVMETHOD(pcib_write_config, schizo_write_config),
DEVMETHOD(pcib_route_interrupt, schizo_route_interrupt),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_node, schizo_get_node),
/* ofw_pci interface */
DEVMETHOD(ofw_pci_setup_device, schizo_setup_device),
DEVMETHOD_END
};
static devclass_t schizo_devclass;
DEFINE_CLASS_0(pcib, schizo_driver, schizo_methods,
sizeof(struct schizo_softc));
EARLY_DRIVER_MODULE(schizo, nexus, schizo_driver, schizo_devclass, 0, 0,
BUS_PASS_BUS);
static SLIST_HEAD(, schizo_softc) schizo_softcs =
SLIST_HEAD_INITIALIZER(schizo_softcs);
static const struct intr_controller schizo_ic = {
schizo_intr_enable,
schizo_intr_disable,
schizo_intr_assign,
schizo_intr_clear
};
struct schizo_icarg {
struct schizo_softc *sica_sc;
bus_addr_t sica_map;
bus_addr_t sica_clr;
};
#define SCHIZO_CDMA_TIMEOUT 1 /* 1 second per try */
#define SCHIZO_CDMA_TRIES 15
#define SCHIZO_PERF_CNT_QLTY 100
#define SCHIZO_SPC_BARRIER(spc, sc, offs, len, flags) \
bus_barrier((sc)->sc_mem_res[(spc)], (offs), (len), (flags))
#define SCHIZO_SPC_READ_8(spc, sc, offs) \
bus_read_8((sc)->sc_mem_res[(spc)], (offs))
#define SCHIZO_SPC_WRITE_8(spc, sc, offs, v) \
bus_write_8((sc)->sc_mem_res[(spc)], (offs), (v))
#ifndef SCHIZO_DEBUG
#define SCHIZO_SPC_SET(spc, sc, offs, reg, v) \
SCHIZO_SPC_WRITE_8((spc), (sc), (offs), (v))
#else
#define SCHIZO_SPC_SET(spc, sc, offs, reg, v) do { \
device_printf((sc)->sc_dev, reg " 0x%016llx -> 0x%016llx\n", \
(unsigned long long)SCHIZO_SPC_READ_8((spc), (sc), (offs)), \
(unsigned long long)(v)); \
SCHIZO_SPC_WRITE_8((spc), (sc), (offs), (v)); \
} while (0)
#endif
#define SCHIZO_PCI_READ_8(sc, offs) \
SCHIZO_SPC_READ_8(STX_PCI, (sc), (offs))
#define SCHIZO_PCI_WRITE_8(sc, offs, v) \
SCHIZO_SPC_WRITE_8(STX_PCI, (sc), (offs), (v))
#define SCHIZO_CTRL_READ_8(sc, offs) \
SCHIZO_SPC_READ_8(STX_CTRL, (sc), (offs))
#define SCHIZO_CTRL_WRITE_8(sc, offs, v) \
SCHIZO_SPC_WRITE_8(STX_CTRL, (sc), (offs), (v))
#define SCHIZO_PCICFG_READ_8(sc, offs) \
SCHIZO_SPC_READ_8(STX_PCICFG, (sc), (offs))
#define SCHIZO_PCICFG_WRITE_8(sc, offs, v) \
SCHIZO_SPC_WRITE_8(STX_PCICFG, (sc), (offs), (v))
#define SCHIZO_ICON_READ_8(sc, offs) \
SCHIZO_SPC_READ_8(STX_ICON, (sc), (offs))
#define SCHIZO_ICON_WRITE_8(sc, offs, v) \
SCHIZO_SPC_WRITE_8(STX_ICON, (sc), (offs), (v))
#define SCHIZO_PCI_SET(sc, offs, v) \
SCHIZO_SPC_SET(STX_PCI, (sc), (offs), # offs, (v))
#define SCHIZO_CTRL_SET(sc, offs, v) \
SCHIZO_SPC_SET(STX_CTRL, (sc), (offs), # offs, (v))
struct schizo_desc {
const char *sd_string;
int sd_mode;
const char *sd_name;
};
static const struct schizo_desc const schizo_compats[] = {
{ "pci108e,8001", SCHIZO_MODE_SCZ, "Schizo" },
#if 0
{ "pci108e,8002", SCHIZO_MODE_XMS, "XMITS" },
#endif
{ "pci108e,a801", SCHIZO_MODE_TOM, "Tomatillo" },
{ NULL, 0, NULL }
};
static const struct schizo_desc *
schizo_get_desc(device_t dev)
{
const struct schizo_desc *desc;
const char *compat;
compat = ofw_bus_get_compat(dev);
if (compat == NULL)
return (NULL);
for (desc = schizo_compats; desc->sd_string != NULL; desc++)
if (strcmp(desc->sd_string, compat) == 0)
return (desc);
return (NULL);
}
static int
schizo_probe(device_t dev)
{
const char *dtype;
dtype = ofw_bus_get_type(dev);
if (dtype != NULL && strcmp(dtype, OFW_TYPE_PCI) == 0 &&
schizo_get_desc(dev) != NULL) {
device_set_desc(dev, "Sun Host-PCI bridge");
return (0);
}
return (ENXIO);
}
static int
schizo_attach(device_t dev)
{
struct ofw_pci_ranges *range;
const struct schizo_desc *desc;
struct schizo_softc *asc, *sc, *osc;
struct timecounter *tc;
uint64_t ino_bitmap, reg;
phandle_t node;
uint32_t prop, prop_array[2];
int i, j, mode, rid, tsbsize;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
desc = schizo_get_desc(dev);
mode = desc->sd_mode;
sc->sc_dev = dev;
sc->sc_node = node;
sc->sc_mode = mode;
sc->sc_flags = 0;
/*
* The Schizo has three register banks:
* (0) per-PBM PCI configuration and status registers, but for bus B
* shared with the UPA64s interrupt mapping register banks
* (1) shared Schizo controller configuration and status registers
* (2) per-PBM PCI configuration space
*
* The Tomatillo has four register banks:
* (0) per-PBM PCI configuration and status registers
* (1) per-PBM Tomatillo controller configuration registers, but on
* machines having the `jbusppm' device shared with its Estar
* register bank for bus A
* (2) per-PBM PCI configuration space
* (3) per-PBM interrupt concentrator registers
*/
sc->sc_half = (bus_get_resource_start(dev, SYS_RES_MEMORY, STX_PCI) >>
20) & 1;
for (i = 0; i < (mode == SCHIZO_MODE_SCZ ? SCZ_NREG : TOM_NREG);
i++) {
rid = i;
sc->sc_mem_res[i] = bus_alloc_resource_any(dev,
SYS_RES_MEMORY, &rid,
(((mode == SCHIZO_MODE_SCZ && ((sc->sc_half == 1 &&
i == STX_PCI) || i == STX_CTRL)) ||
(mode == SCHIZO_MODE_TOM && sc->sc_half == 0 &&
i == STX_CTRL)) ? RF_SHAREABLE : 0) | RF_ACTIVE);
if (sc->sc_mem_res[i] == NULL)
panic("%s: could not allocate register bank %d",
__func__, i);
}
/*
* Match other Schizos that are already configured against
* the controller base physical address. This will be the
* same for a pair of devices that share register space.
*/
osc = NULL;
SLIST_FOREACH(asc, &schizo_softcs, sc_link) {
if (rman_get_start(asc->sc_mem_res[STX_CTRL]) ==
rman_get_start(sc->sc_mem_res[STX_CTRL])) {
/* Found partner. */
osc = asc;
break;
}
}
if (osc == NULL) {
sc->sc_mtx = malloc(sizeof(*sc->sc_mtx), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (sc->sc_mtx == NULL)
panic("%s: could not malloc mutex", __func__);
mtx_init(sc->sc_mtx, "pcib_mtx", NULL, MTX_SPIN);
} else {
if (sc->sc_mode != SCHIZO_MODE_SCZ)
panic("%s: no partner expected", __func__);
if (mtx_initialized(osc->sc_mtx) == 0)
panic("%s: mutex not initialized", __func__);
sc->sc_mtx = osc->sc_mtx;
}
if (OF_getprop(node, "portid", &sc->sc_ign, sizeof(sc->sc_ign)) == -1)
panic("%s: could not determine IGN", __func__);
if (OF_getprop(node, "version#", &sc->sc_ver, sizeof(sc->sc_ver)) ==
-1)
panic("%s: could not determine version", __func__);
if (mode == SCHIZO_MODE_XMS && OF_getprop(node, "module-revision#",
&sc->sc_mrev, sizeof(sc->sc_mrev)) == -1)
panic("%s: could not determine module-revision", __func__);
if (OF_getprop(node, "clock-frequency", &prop, sizeof(prop)) == -1)
prop = 33000000;
if (mode == SCHIZO_MODE_XMS && (SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL) &
XMS_PCI_CTRL_X_MODE) != 0) {
if (sc->sc_mrev < 1)
panic("PCI-X mode unsupported");
sc->sc_flags |= SCHIZO_FLAGS_XMODE;
}
device_printf(dev, "%s, version %d, ", desc->sd_name, sc->sc_ver);
if (mode == SCHIZO_MODE_XMS)
printf("module-revision %d, ", sc->sc_mrev);
printf("IGN %#x, bus %c, PCI%s mode, %dMHz\n", sc->sc_ign,
'A' + sc->sc_half, (sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 ?
"-X" : "", prop / 1000 / 1000);
/* Set up the PCI interrupt retry timer. */
SCHIZO_PCI_SET(sc, STX_PCI_INTR_RETRY_TIM, 5);
/* Set up the PCI control register. */
reg = SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL);
reg &= ~(TOM_PCI_CTRL_DTO_IEN | STX_PCI_CTRL_ARB_PARK |
STX_PCI_CTRL_ARB_MASK);
reg |= STX_PCI_CTRL_MMU_IEN | STX_PCI_CTRL_SBH_IEN |
STX_PCI_CTRL_ERR_IEN;
if (OF_getproplen(node, "no-bus-parking") < 0)
reg |= STX_PCI_CTRL_ARB_PARK;
if (mode == SCHIZO_MODE_XMS && sc->sc_mrev == 1)
reg |= XMS_PCI_CTRL_XMITS10_ARB_MASK;
else
reg |= STX_PCI_CTRL_ARB_MASK;
if (mode == SCHIZO_MODE_TOM) {
reg |= TOM_PCI_CTRL_PRM | TOM_PCI_CTRL_PRO | TOM_PCI_CTRL_PRL;
if (sc->sc_ver <= 1) /* revision <= 2.0 */
reg |= TOM_PCI_CTRL_DTO_IEN;
else
reg |= STX_PCI_CTRL_PTO;
} else if (mode == SCHIZO_MODE_XMS) {
SCHIZO_PCI_SET(sc, XMS_PCI_PARITY_DETECT, 0x3fff);
SCHIZO_PCI_SET(sc, XMS_PCI_UPPER_RETRY_COUNTER, 0x3e8);
reg |= XMS_PCI_CTRL_X_ERRINT_EN;
}
SCHIZO_PCI_SET(sc, STX_PCI_CTRL, reg);
/* Set up the PCI diagnostic register. */
reg = SCHIZO_PCI_READ_8(sc, STX_PCI_DIAG);
reg &= ~(SCZ_PCI_DIAG_RTRYARB_DIS | STX_PCI_DIAG_RETRY_DIS |
STX_PCI_DIAG_INTRSYNC_DIS);
SCHIZO_PCI_SET(sc, STX_PCI_DIAG, reg);
/*
* Enable DMA write parity error interrupts of version >= 7 (i.e.
* revision >= 2.5) Schizo and XMITS (enabling it on XMITS < 3.0 has
* no effect though).
*/
if ((mode == SCHIZO_MODE_SCZ && sc->sc_ver >= 7) ||
mode == SCHIZO_MODE_XMS) {
reg = SCHIZO_PCI_READ_8(sc, SX_PCI_CFG_ICD);
reg |= SX_PCI_CFG_ICD_DMAW_PERR_IEN;
SCHIZO_PCI_SET(sc, SX_PCI_CFG_ICD, reg);
}
/*
* On Tomatillo clear the I/O prefetch lengths (workaround for a
* Jalapeno bug).
*/
if (mode == SCHIZO_MODE_TOM)
SCHIZO_PCI_SET(sc, TOM_PCI_IOC_CSR, TOM_PCI_IOC_PW |
(1 << TOM_PCI_IOC_PREF_OFF_SHIFT) | TOM_PCI_IOC_CPRM |
TOM_PCI_IOC_CPRO | TOM_PCI_IOC_CPRL);
/*
* Hunt through all the interrupt mapping regs and register
* the interrupt controller for our interrupt vectors. We do
* this early in order to be able to catch stray interrupts.
* This is complicated by the fact that a pair of Schizo PBMs
* shares one IGN.
*/
i = OF_getprop(node, "ino-bitmap", (void *)prop_array,
sizeof(prop_array));
if (i != -1)
ino_bitmap = ((uint64_t)prop_array[1] << 32) | prop_array[0];
else {
/*
* If the ino-bitmap property is missing, just provide the
* default set of interrupts for this controller and let
* schizo_setup_intr() take care of child interrupts.
*/
if (sc->sc_half == 0)
ino_bitmap = (1ULL << STX_UE_INO) |
(1ULL << STX_CE_INO) |
(1ULL << STX_PCIERR_A_INO) |
(1ULL << STX_BUS_INO);
else
ino_bitmap = 1ULL << STX_PCIERR_B_INO;
}
for (i = 0; i <= STX_MAX_INO; i++) {
if ((ino_bitmap & (1ULL << i)) == 0)
continue;
if (i == STX_FB0_INO || i == STX_FB1_INO)
/* Leave for upa(4). */
continue;
j = schizo_intr_register(sc, i);
if (j != 0)
device_printf(dev, "could not register interrupt "
"controller for INO %d (%d)\n", i, j);
}
/*
* Setup Safari/JBus performance counter 0 in bus cycle counting
* mode as timecounter. Unfortunately, this is broken with at
* least the version 4 Tomatillos found in Fire V120 and Blade
* 1500, which apparently actually count some different event at
* ~0.5 and 3MHz respectively instead (also when running in full
* power mode). Besides, one counter seems to be shared by a
* "pair" of Tomatillos, too.
*/
if (sc->sc_half == 0) {
SCHIZO_CTRL_SET(sc, STX_CTRL_PERF,
(STX_CTRL_PERF_DIS << STX_CTRL_PERF_CNT1_SHIFT) |
(STX_CTRL_PERF_BUSCYC << STX_CTRL_PERF_CNT0_SHIFT));
tc = malloc(sizeof(*tc), M_DEVBUF, M_NOWAIT | M_ZERO);
if (tc == NULL)
panic("%s: could not malloc timecounter", __func__);
tc->tc_get_timecount = schizo_get_timecount;
tc->tc_counter_mask = STX_CTRL_PERF_CNT_MASK;
if (OF_getprop(OF_peer(0), "clock-frequency", &prop,
sizeof(prop)) == -1)
panic("%s: could not determine clock frequency",
__func__);
tc->tc_frequency = prop;
tc->tc_name = strdup(device_get_nameunit(dev), M_DEVBUF);
if (mode == SCHIZO_MODE_SCZ)
tc->tc_quality = SCHIZO_PERF_CNT_QLTY;
else
tc->tc_quality = -SCHIZO_PERF_CNT_QLTY;
tc->tc_priv = sc;
tc_init(tc);
}
/*
* Set up the IOMMU. Schizo, Tomatillo and XMITS all have
* one per PBM. Schizo and XMITS additionally have a streaming
* buffer, in Schizo version < 5 (i.e. revision < 2.3) it's
* affected by several errata though. However, except for context
* flushes, taking advantage of it should be okay even with those.
*/
memcpy(&sc->sc_dma_methods, &iommu_dma_methods,
sizeof(sc->sc_dma_methods));
sc->sc_is.sis_sc = sc;
sc->sc_is.sis_is.is_flags = IOMMU_PRESERVE_PROM;
sc->sc_is.sis_is.is_pmaxaddr = IOMMU_MAXADDR(STX_IOMMU_BITS);
sc->sc_is.sis_is.is_sb[0] = sc->sc_is.sis_is.is_sb[1] = 0;
if (OF_getproplen(node, "no-streaming-cache") < 0)
sc->sc_is.sis_is.is_sb[0] = STX_PCI_STRBUF;
#define TSBCASE(x) \
case (IOTSB_BASESZ << (x)) << (IO_PAGE_SHIFT - IOTTE_SHIFT): \
tsbsize = (x); \
break; \
i = OF_getprop(node, "virtual-dma", (void *)prop_array,
sizeof(prop_array));
if (i == -1 || i != sizeof(prop_array))
schizo_iommu_init(sc, 7, -1);
else {
switch (prop_array[1]) {
TSBCASE(1);
TSBCASE(2);
TSBCASE(3);
TSBCASE(4);
TSBCASE(5);
TSBCASE(6);
TSBCASE(7);
TSBCASE(8);
default:
panic("%s: unsupported DVMA size 0x%x",
__func__, prop_array[1]);
/* NOTREACHED */
}
schizo_iommu_init(sc, tsbsize, prop_array[0]);
}
#undef TSBCASE
/* Initialize memory and I/O rmans. */
sc->sc_pci_io_rman.rm_type = RMAN_ARRAY;
sc->sc_pci_io_rman.rm_descr = "Schizo PCI I/O Ports";
if (rman_init(&sc->sc_pci_io_rman) != 0 ||
rman_manage_region(&sc->sc_pci_io_rman, 0, STX_IO_SIZE) != 0)
panic("%s: failed to set up I/O rman", __func__);
sc->sc_pci_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_pci_mem_rman.rm_descr = "Schizo PCI Memory";
if (rman_init(&sc->sc_pci_mem_rman) != 0 ||
rman_manage_region(&sc->sc_pci_mem_rman, 0, STX_MEM_SIZE) != 0)
panic("%s: failed to set up memory rman", __func__);
i = OF_getprop_alloc(node, "ranges", sizeof(*range), (void **)&range);
/*
* Make sure that the expected ranges are present. The
* OFW_PCI_CS_MEM64 one is not currently used though.
*/
if (i != STX_NRANGE)
panic("%s: unsupported number of ranges", __func__);
/*
* 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 I/O handles.
*/
for (i = 0; i < STX_NRANGE; i++) {
j = OFW_PCI_RANGE_CS(&range[i]);
if (sc->sc_pci_bh[j] != 0)
panic("%s: duplicate range for space %d",
__func__, j);
sc->sc_pci_bh[j] = OFW_PCI_RANGE_PHYS(&range[i]);
}
free(range, M_OFWPROP);
/* Register the softc, this is needed for paired Schizos. */
SLIST_INSERT_HEAD(&schizo_softcs, sc, sc_link);
/* Allocate our tags. */
sc->sc_pci_iot = sparc64_alloc_bus_tag(NULL, rman_get_bustag(
sc->sc_mem_res[STX_PCI]), PCI_IO_BUS_SPACE, NULL);
if (sc->sc_pci_iot == NULL)
panic("%s: could not allocate PCI I/O tag", __func__);
sc->sc_pci_cfgt = sparc64_alloc_bus_tag(NULL, rman_get_bustag(
sc->sc_mem_res[STX_PCI]), PCI_CONFIG_BUS_SPACE, NULL);
if (sc->sc_pci_cfgt == NULL)
panic("%s: could not allocate PCI configuration space tag",
__func__);
if (bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0,
sc->sc_is.sis_is.is_pmaxaddr, ~0, NULL, NULL,
sc->sc_is.sis_is.is_pmaxaddr, 0xff, 0xffffffff, 0, NULL, NULL,
&sc->sc_pci_dmat) != 0)
panic("%s: could not create PCI DMA tag", __func__);
/* Customize the tag. */
sc->sc_pci_dmat->dt_cookie = &sc->sc_is;
sc->sc_pci_dmat->dt_mt = &sc->sc_dma_methods;
/*
* Get the bus range from the firmware.
* NB: Tomatillos don't support PCI bus reenumeration.
*/
i = OF_getprop(node, "bus-range", (void *)prop_array,
sizeof(prop_array));
if (i == -1)
panic("%s: could not get bus-range", __func__);
if (i != sizeof(prop_array))
panic("%s: broken bus-range (%d)", __func__, i);
sc->sc_pci_secbus = prop_array[0];
sc->sc_pci_subbus = prop_array[1];
if (bootverbose)
device_printf(dev, "bus range %u to %u; PCI bus %d\n",
sc->sc_pci_secbus, sc->sc_pci_subbus, sc->sc_pci_secbus);
/* Clear any pending PCI error bits. */
PCIB_WRITE_CONFIG(dev, sc->sc_pci_secbus, STX_CS_DEVICE, STX_CS_FUNC,
PCIR_STATUS, PCIB_READ_CONFIG(dev, sc->sc_pci_secbus,
STX_CS_DEVICE, STX_CS_FUNC, PCIR_STATUS, 2), 2);
SCHIZO_PCI_SET(sc, STX_PCI_CTRL, SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL));
SCHIZO_PCI_SET(sc, STX_PCI_AFSR, SCHIZO_PCI_READ_8(sc, STX_PCI_AFSR));
/*
* Establish handlers for interesting interrupts...
* Someone at Sun clearly was smoking crack; with Schizos PCI
* bus error interrupts for one PBM can be routed to the other
* PBM though we obviously need to use the softc of the former
* as the argument for the interrupt handler and the softc of
* the latter as the argument for the interrupt controller.
*/
if (sc->sc_half == 0) {
if ((ino_bitmap & (1ULL << STX_PCIERR_A_INO)) != 0 ||
(osc != NULL && ((struct schizo_icarg *)intr_vectors[
INTMAP_VEC(sc->sc_ign, STX_PCIERR_A_INO)].iv_icarg)->
sica_sc == osc))
/*
* We are the driver for PBM A and either also
* registered the interrupt controller for us or
* the driver for PBM B has probed first and
* registered it for us.
*/
schizo_set_intr(sc, 0, STX_PCIERR_A_INO,
schizo_pci_bus);
if ((ino_bitmap & (1ULL << STX_PCIERR_B_INO)) != 0 &&
osc != NULL)
/*
* We are the driver for PBM A but registered
* the interrupt controller for PBM B, i.e. the
* driver for PBM B attached first but couldn't
* set up a handler for PBM B.
*/
schizo_set_intr(osc, 0, STX_PCIERR_B_INO,
schizo_pci_bus);
} else {
if ((ino_bitmap & (1ULL << STX_PCIERR_B_INO)) != 0 ||
(osc != NULL && ((struct schizo_icarg *)intr_vectors[
INTMAP_VEC(sc->sc_ign, STX_PCIERR_B_INO)].iv_icarg)->
sica_sc == osc))
/*
* We are the driver for PBM B and either also
* registered the interrupt controller for us or
* the driver for PBM A has probed first and
* registered it for us.
*/
schizo_set_intr(sc, 0, STX_PCIERR_B_INO,
schizo_pci_bus);
if ((ino_bitmap & (1ULL << STX_PCIERR_A_INO)) != 0 &&
osc != NULL)
/*
* We are the driver for PBM B but registered
* the interrupt controller for PBM A, i.e. the
* driver for PBM A attached first but couldn't
* set up a handler for PBM A.
*/
schizo_set_intr(osc, 0, STX_PCIERR_A_INO,
schizo_pci_bus);
}
if ((ino_bitmap & (1ULL << STX_UE_INO)) != 0)
schizo_set_intr(sc, 1, STX_UE_INO, schizo_ue);
if ((ino_bitmap & (1ULL << STX_CE_INO)) != 0)
schizo_set_intr(sc, 2, STX_CE_INO, schizo_ce);
if ((ino_bitmap & (1ULL << STX_BUS_INO)) != 0)
schizo_set_intr(sc, 3, STX_BUS_INO, schizo_host_bus);
/*
* According to the Schizo Errata I-13, consistent DMA flushing/
* syncing is FUBAR in version < 5 (i.e. revision < 2.3) bridges,
* so we can't use it and need to live with the consequences. With
* Schizo version >= 5, CDMA flushing/syncing is usable but requires
* the workaround described in Schizo Errata I-23. With Tomatillo
* and XMITS, CDMA flushing/syncing works as expected, Tomatillo
* version <= 4 (i.e. revision <= 2.3) bridges additionally require
* a block store after a write to TOMXMS_PCI_DMA_SYNC_PEND though.
*/
if ((sc->sc_mode == SCHIZO_MODE_SCZ && sc->sc_ver >= 5) ||
sc->sc_mode == SCHIZO_MODE_TOM ||
sc->sc_mode == SCHIZO_MODE_XMS) {
if (sc->sc_mode == SCHIZO_MODE_SCZ) {
sc->sc_dma_methods.dm_dmamap_sync =
schizo_dmamap_sync;
sc->sc_cdma_state = SCHIZO_CDMA_STATE_IDLE;
/*
* Some firmware versions include the CDMA interrupt
* at RID 4 but most don't. With the latter we add
* it ourselves at the spare RID 5.
*/
i = INTINO(bus_get_resource_start(dev, SYS_RES_IRQ,
4));
if (i == STX_CDMA_A_INO || i == STX_CDMA_B_INO) {
sc->sc_cdma_vec = INTMAP_VEC(sc->sc_ign, i);
(void)schizo_get_intrmap(sc, i,
&sc->sc_cdma_map, &sc->sc_cdma_clr);
schizo_set_intr(sc, 4, i, schizo_cdma);
} else {
i = STX_CDMA_A_INO + sc->sc_half;
sc->sc_cdma_vec = INTMAP_VEC(sc->sc_ign, i);
if (bus_set_resource(dev, SYS_RES_IRQ, 5,
sc->sc_cdma_vec, 1) != 0)
panic("%s: failed to add CDMA "
"interrupt", __func__);
j = schizo_intr_register(sc, i);
if (j != 0)
panic("%s: could not register "
"interrupt controller for CDMA "
"(%d)", __func__, j);
(void)schizo_get_intrmap(sc, i,
&sc->sc_cdma_map, &sc->sc_cdma_clr);
schizo_set_intr(sc, 5, i, schizo_cdma);
}
} else {
if (sc->sc_mode == SCHIZO_MODE_XMS)
mtx_init(&sc->sc_sync_mtx, "pcib_sync_mtx",
NULL, MTX_SPIN);
sc->sc_sync_val = 1ULL << (STX_PCIERR_A_INO +
sc->sc_half);
sc->sc_dma_methods.dm_dmamap_sync =
ichip_dmamap_sync;
}
if (sc->sc_mode == SCHIZO_MODE_TOM && sc->sc_ver <= 4)
sc->sc_flags |= SCHIZO_FLAGS_BSWAR;
}
/*
* Set the latency timer register as this isn't always done by the
* firmware.
*/
PCIB_WRITE_CONFIG(dev, sc->sc_pci_secbus, STX_CS_DEVICE, STX_CS_FUNC,
PCIR_LATTIMER, OFW_PCI_LATENCY, 1);
ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(ofw_pci_intr_t));
#define SCHIZO_SYSCTL_ADD_UINT(name, arg, desc) \
SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), \
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, \
(name), CTLFLAG_RD, (arg), 0, (desc))
SCHIZO_SYSCTL_ADD_UINT("dma_ce", &sc->sc_stats_dma_ce,
"DMA correctable errors");
SCHIZO_SYSCTL_ADD_UINT("pci_non_fatal", &sc->sc_stats_pci_non_fatal,
"PCI bus non-fatal errors");
#undef SCHIZO_SYSCTL_ADD_UINT
device_add_child(dev, "pci", -1);
return (bus_generic_attach(dev));
}
static void
schizo_set_intr(struct schizo_softc *sc, u_int index, u_int ino,
driver_filter_t handler)
{
u_long vec;
int rid;
rid = index;
sc->sc_irq_res[index] = bus_alloc_resource_any(sc->sc_dev,
SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->sc_irq_res[index] == NULL ||
INTINO(vec = rman_get_start(sc->sc_irq_res[index])) != ino ||
INTIGN(vec) != sc->sc_ign ||
intr_vectors[vec].iv_ic != &schizo_ic ||
bus_setup_intr(sc->sc_dev, sc->sc_irq_res[index],
INTR_TYPE_MISC | INTR_BRIDGE, handler, NULL, sc,
&sc->sc_ihand[index]) != 0)
panic("%s: failed to set up interrupt %d", __func__, index);
}
static int
schizo_intr_register(struct schizo_softc *sc, u_int ino)
{
struct schizo_icarg *sica;
bus_addr_t intrclr, intrmap;
int error;
if (schizo_get_intrmap(sc, ino, &intrmap, &intrclr) == 0)
return (ENXIO);
sica = malloc(sizeof(*sica), M_DEVBUF, M_NOWAIT);
if (sica == NULL)
return (ENOMEM);
sica->sica_sc = sc;
sica->sica_map = intrmap;
sica->sica_clr = intrclr;
#ifdef SCHIZO_DEBUG
device_printf(sc->sc_dev, "intr map (INO %d) %#lx: %#lx, clr: %#lx\n",
ino, (u_long)intrmap, (u_long)SCHIZO_PCI_READ_8(sc, intrmap),
(u_long)intrclr);
#endif
error = (intr_controller_register(INTMAP_VEC(sc->sc_ign, ino),
&schizo_ic, sica));
if (error != 0)
free(sica, M_DEVBUF);
return (error);
}
static int
schizo_get_intrmap(struct schizo_softc *sc, u_int ino,
bus_addr_t *intrmapptr, bus_addr_t *intrclrptr)
{
bus_addr_t intrclr, intrmap;
uint64_t mr;
/*
* XXX we only look for INOs rather than INRs since the firmware
* may not provide the IGN and the IGN is constant for all devices
* on that PCI controller.
*/
if (ino > STX_MAX_INO) {
device_printf(sc->sc_dev, "out of range INO %d requested\n",
ino);
return (0);
}
intrmap = STX_PCI_IMAP_BASE + (ino << 3);
intrclr = STX_PCI_ICLR_BASE + (ino << 3);
mr = SCHIZO_PCI_READ_8(sc, intrmap);
if (INTINO(mr) != ino) {
device_printf(sc->sc_dev,
"interrupt map entry does not match INO (%d != %d)\n",
(int)INTINO(mr), ino);
return (0);
}
if (intrmapptr != NULL)
*intrmapptr = intrmap;
if (intrclrptr != NULL)
*intrclrptr = intrclr;
return (1);
}
/*
* Interrupt handlers
*/
static int
schizo_pci_bus(void *arg)
{
struct schizo_softc *sc = arg;
uint64_t afar, afsr, csr, iommu, xstat;
uint32_t status;
u_int fatal;
fatal = 0;
mtx_lock_spin(sc->sc_mtx);
afar = SCHIZO_PCI_READ_8(sc, STX_PCI_AFAR);
afsr = SCHIZO_PCI_READ_8(sc, STX_PCI_AFSR);
csr = SCHIZO_PCI_READ_8(sc, STX_PCI_CTRL);
iommu = SCHIZO_PCI_READ_8(sc, STX_PCI_IOMMU);
if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0)
xstat = SCHIZO_PCI_READ_8(sc, XMS_PCI_X_ERR_STAT);
else
xstat = 0;
status = PCIB_READ_CONFIG(sc->sc_dev, sc->sc_pci_secbus,
STX_CS_DEVICE, STX_CS_FUNC, PCIR_STATUS, 2);
/*
* IOMMU errors are only fatal on Tomatillo and there also only if
* target abort was not signaled.
*/
if ((csr & STX_PCI_CTRL_MMU_ERR) != 0 &&
(iommu & TOM_PCI_IOMMU_ERR) != 0 &&
((status & PCIM_STATUS_STABORT) == 0 ||
((iommu & TOM_PCI_IOMMU_ERRMASK) != TOM_PCI_IOMMU_INVALID_ERR &&
(iommu & TOM_PCI_IOMMU_ERR_ILLTSBTBW) == 0 &&
(iommu & TOM_PCI_IOMMU_ERR_BAD_VA) == 0)))
fatal = 1;
else if ((status & PCIM_STATUS_STABORT) != 0)
fatal = 1;
if ((status & (PCIM_STATUS_PERR | PCIM_STATUS_SERR |
PCIM_STATUS_RMABORT | PCIM_STATUS_RTABORT |
PCIM_STATUS_MDPERR)) != 0 ||
(csr & (SCZ_PCI_CTRL_BUS_UNUS | TOM_PCI_CTRL_DTO_ERR |
STX_PCI_CTRL_TTO_ERR | STX_PCI_CTRL_RTRY_ERR |
SCZ_PCI_CTRL_SBH_ERR | STX_PCI_CTRL_SERR)) != 0 ||
(afsr & (STX_PCI_AFSR_P_MA | STX_PCI_AFSR_P_TA |
STX_PCI_AFSR_P_RTRY | STX_PCI_AFSR_P_PERR | STX_PCI_AFSR_P_TTO |
STX_PCI_AFSR_P_UNUS)) != 0)
fatal = 1;
if (xstat & (XMS_PCI_X_ERR_STAT_P_SC_DSCRD |
XMS_PCI_X_ERR_STAT_P_SC_TTO | XMS_PCI_X_ERR_STAT_P_SDSTAT |
XMS_PCI_X_ERR_STAT_P_SMMU | XMS_PCI_X_ERR_STAT_P_CDSTAT |
XMS_PCI_X_ERR_STAT_P_CMMU | XMS_PCI_X_ERR_STAT_PERR_RCV))
fatal = 1;
if (fatal == 0)
sc->sc_stats_pci_non_fatal++;
device_printf(sc->sc_dev, "PCI bus %c error AFAR %#llx AFSR %#llx "
"PCI CSR %#llx IOMMU %#llx PCI-X %#llx STATUS %#x\n",
'A' + sc->sc_half, (unsigned long long)afar,
(unsigned long long)afsr, (unsigned long long)csr,
(unsigned long long)iommu, (unsigned long long)xstat, status);
/* Clear the error bits that we caught. */
PCIB_WRITE_CONFIG(sc->sc_dev, sc->sc_pci_secbus, STX_CS_DEVICE,
STX_CS_FUNC, PCIR_STATUS, status, 2);
SCHIZO_PCI_WRITE_8(sc, STX_PCI_CTRL, csr);
SCHIZO_PCI_WRITE_8(sc, STX_PCI_AFSR, afsr);
SCHIZO_PCI_WRITE_8(sc, STX_PCI_IOMMU, iommu);
if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0)
SCHIZO_PCI_WRITE_8(sc, XMS_PCI_X_ERR_STAT, xstat);
mtx_unlock_spin(sc->sc_mtx);
if (fatal != 0)
panic("%s: fatal PCI bus error",
device_get_nameunit(sc->sc_dev));
return (FILTER_HANDLED);
}
static int
schizo_ue(void *arg)
{
struct schizo_softc *sc = arg;
uint64_t afar, afsr;
int i;
afar = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFAR);
for (i = 0; i < 1000; i++)
if (((afsr = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFSR)) &
STX_CTRL_CE_AFSR_ERRPNDG) == 0)
break;
panic("%s: uncorrectable DMA error AFAR %#llx AFSR %#llx",
device_get_nameunit(sc->sc_dev), (unsigned long long)afar,
(unsigned long long)afsr);
return (FILTER_HANDLED);
}
static int
schizo_ce(void *arg)
{
struct schizo_softc *sc = arg;
uint64_t afar, afsr;
int i;
mtx_lock_spin(sc->sc_mtx);
afar = SCHIZO_CTRL_READ_8(sc, STX_CTRL_CE_AFAR);
for (i = 0; i < 1000; i++)
if (((afsr = SCHIZO_CTRL_READ_8(sc, STX_CTRL_UE_AFSR)) &
STX_CTRL_CE_AFSR_ERRPNDG) == 0)
break;
sc->sc_stats_dma_ce++;
device_printf(sc->sc_dev,
"correctable DMA error AFAR %#llx AFSR %#llx\n",
(unsigned long long)afar, (unsigned long long)afsr);
/* Clear the error bits that we caught. */
SCHIZO_CTRL_WRITE_8(sc, STX_CTRL_UE_AFSR, afsr);
mtx_unlock_spin(sc->sc_mtx);
return (FILTER_HANDLED);
}
static int
schizo_host_bus(void *arg)
{
struct schizo_softc *sc = arg;
uint64_t errlog;
errlog = SCHIZO_CTRL_READ_8(sc, STX_CTRL_BUS_ERRLOG);
panic("%s: %s error %#llx", device_get_nameunit(sc->sc_dev),
sc->sc_mode == SCHIZO_MODE_TOM ? "JBus" : "Safari",
(unsigned long long)errlog);
return (FILTER_HANDLED);
}
static int
schizo_cdma(void *arg)
{
struct schizo_softc *sc = arg;
atomic_cmpset_32(&sc->sc_cdma_state, SCHIZO_CDMA_STATE_PENDING,
SCHIZO_CDMA_STATE_RECEIVED);
return (FILTER_HANDLED);
}
static void
schizo_iommu_init(struct schizo_softc *sc, int tsbsize, uint32_t dvmabase)
{
/* Punch in our copies. */
sc->sc_is.sis_is.is_bustag = rman_get_bustag(sc->sc_mem_res[STX_PCI]);
sc->sc_is.sis_is.is_bushandle =
rman_get_bushandle(sc->sc_mem_res[STX_PCI]);
sc->sc_is.sis_is.is_iommu = STX_PCI_IOMMU;
sc->sc_is.sis_is.is_dtag = STX_PCI_IOMMU_TLB_TAG_DIAG;
sc->sc_is.sis_is.is_ddram = STX_PCI_IOMMU_TLB_DATA_DIAG;
sc->sc_is.sis_is.is_dqueue = STX_PCI_IOMMU_QUEUE_DIAG;
sc->sc_is.sis_is.is_dva = STX_PCI_IOMMU_SVADIAG;
sc->sc_is.sis_is.is_dtcmp = STX_PCI_IOMMU_TLB_CMP_DIAG;
iommu_init(device_get_nameunit(sc->sc_dev),
(struct iommu_state *)&sc->sc_is, tsbsize, dvmabase, 0);
}
static int
schizo_maxslots(device_t dev)
{
struct schizo_softc *sc;
sc = device_get_softc(dev);
if (sc->sc_mode == SCHIZO_MODE_SCZ)
return (sc->sc_half == 0 ? 4 : 6);
/* XXX: is this correct? */
return (PCI_SLOTMAX);
}
static uint32_t
schizo_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
int width)
{
struct schizo_softc *sc;
bus_space_handle_t bh;
u_long offset = 0;
uint32_t r, wrd;
int i;
uint16_t shrt;
uint8_t byte;
sc = device_get_softc(dev);
if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > PCI_REGMAX)
return (-1);
/*
* The Schizo bridges contain a dupe of their header at 0x80.
*/
if (sc->sc_mode == SCHIZO_MODE_SCZ && bus == sc->sc_pci_secbus &&
slot == STX_CS_DEVICE && func == STX_CS_FUNC &&
reg + width > 0x80)
return (0);
offset = STX_CONF_OFF(bus, slot, func, reg);
bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
switch (width) {
case 1:
i = bus_space_peek_1(sc->sc_pci_cfgt, bh, offset, &byte);
r = byte;
break;
case 2:
i = bus_space_peek_2(sc->sc_pci_cfgt, bh, offset, &shrt);
r = shrt;
break;
case 4:
i = bus_space_peek_4(sc->sc_pci_cfgt, bh, offset, &wrd);
r = wrd;
break;
default:
panic("%s: bad width", __func__);
/* NOTREACHED */
}
if (i) {
#ifdef SCHIZO_DEBUG
printf("%s: read data error reading: %d.%d.%d: 0x%x\n",
__func__, bus, slot, func, reg);
#endif
r = -1;
}
return (r);
}
static void
schizo_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, uint32_t val, int width)
{
struct schizo_softc *sc;
bus_space_handle_t bh;
u_long offset = 0;
sc = device_get_softc(dev);
if (bus < sc->sc_pci_secbus || bus > sc->sc_pci_subbus ||
slot > PCI_SLOTMAX || func > PCI_FUNCMAX || reg > PCI_REGMAX)
return;
offset = STX_CONF_OFF(bus, slot, func, reg);
bh = sc->sc_pci_bh[OFW_PCI_CS_CONFIG];
switch (width) {
case 1:
bus_space_write_1(sc->sc_pci_cfgt, bh, offset, val);
break;
case 2:
bus_space_write_2(sc->sc_pci_cfgt, bh, offset, val);
break;
case 4:
bus_space_write_4(sc->sc_pci_cfgt, bh, offset, val);
break;
default:
panic("%s: bad width", __func__);
/* NOTREACHED */
}
}
static int
schizo_route_interrupt(device_t bridge, device_t dev, int pin)
{
struct schizo_softc *sc;
struct ofw_pci_register reg;
ofw_pci_intr_t pintr, mintr;
uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
sc = device_get_softc(bridge);
pintr = pin;
if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), &sc->sc_pci_iinfo,
®, sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
NULL, maskbuf))
return (mintr);
device_printf(bridge, "could not route pin %d for device %d.%d\n",
pin, pci_get_slot(dev), pci_get_function(dev));
return (PCI_INVALID_IRQ);
}
static int
schizo_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct schizo_softc *sc;
sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_DOMAIN:
*result = device_get_unit(dev);
return (0);
case PCIB_IVAR_BUS:
*result = sc->sc_pci_secbus;
return (0);
}
return (ENOENT);
}
static void
schizo_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map, bus_dmasync_op_t op)
{
struct timeval cur, end;
struct schizo_iommu_state *sis = dt->dt_cookie;
struct schizo_softc *sc = sis->sis_sc;
int i, res;
#ifdef INVARIANTS
register_t pil;
#endif
if ((map->dm_flags & DMF_STREAMED) != 0) {
iommu_dma_methods.dm_dmamap_sync(dt, map, op);
return;
}
if ((map->dm_flags & DMF_LOADED) == 0)
return;
if ((op & BUS_DMASYNC_POSTREAD) != 0) {
/*
* Note that in order to allow this function to be called from
* filters we would need to use a spin mutex for serialization
* but given that these disable interrupts we have to emulate
* one.
*/
critical_enter();
KASSERT((rdpr(pstate) & PSTATE_IE) != 0,
("%s: interrupts disabled", __func__));
KASSERT((pil = rdpr(pil)) <= PIL_BRIDGE,
("%s: PIL too low (%ld)", __func__, pil));
for (; atomic_cmpset_acq_32(&sc->sc_cdma_state,
SCHIZO_CDMA_STATE_IDLE, SCHIZO_CDMA_STATE_PENDING) == 0;)
;
SCHIZO_PCI_WRITE_8(sc, sc->sc_cdma_map,
INTMAP_ENABLE(sc->sc_cdma_vec, PCPU_GET(mid)));
for (i = 0; i < SCHIZO_CDMA_TRIES; i++) {
if (i > 0)
printf("%s: try %d\n", __func__, i);
SCHIZO_PCI_WRITE_8(sc, sc->sc_cdma_clr,
INTCLR_RECEIVED);
microuptime(&cur);
end.tv_sec = SCHIZO_CDMA_TIMEOUT;
end.tv_usec = 0;
timevaladd(&end, &cur);
for (; (res = atomic_cmpset_rel_32(&sc->sc_cdma_state,
SCHIZO_CDMA_STATE_RECEIVED,
SCHIZO_CDMA_STATE_IDLE)) == 0 &&
timevalcmp(&cur, &end, <=);)
microuptime(&cur);
if (res != 0)
break;
}
if (res == 0)
panic("%s: DMA does not sync", __func__);
critical_exit();
}
if ((op & BUS_DMASYNC_PREWRITE) != 0)
membar(Sync);
}
#define VIS_BLOCKSIZE 64
static void
ichip_dmamap_sync(bus_dma_tag_t dt, bus_dmamap_t map, bus_dmasync_op_t op)
{
static u_char buf[VIS_BLOCKSIZE] __aligned(VIS_BLOCKSIZE);
struct timeval cur, end;
struct schizo_iommu_state *sis = dt->dt_cookie;
struct schizo_softc *sc = sis->sis_sc;
register_t reg, s;
if ((map->dm_flags & DMF_STREAMED) != 0) {
iommu_dma_methods.dm_dmamap_sync(dt, map, op);
return;
}
if ((map->dm_flags & DMF_LOADED) == 0)
return;
if ((op & BUS_DMASYNC_POSTREAD) != 0) {
if (sc->sc_mode == SCHIZO_MODE_XMS)
mtx_lock_spin(&sc->sc_sync_mtx);
SCHIZO_PCI_WRITE_8(sc, TOMXMS_PCI_DMA_SYNC_PEND,
sc->sc_sync_val);
microuptime(&cur);
end.tv_sec = 1;
end.tv_usec = 0;
timevaladd(&end, &cur);
for (; ((reg = SCHIZO_PCI_READ_8(sc,
TOMXMS_PCI_DMA_SYNC_PEND)) & sc->sc_sync_val) != 0 &&
timevalcmp(&cur, &end, <=);)
microuptime(&cur);
if ((reg & sc->sc_sync_val) != 0)
panic("%s: DMA does not sync", __func__);
if (sc->sc_mode == SCHIZO_MODE_XMS)
mtx_unlock_spin(&sc->sc_sync_mtx);
else if ((sc->sc_flags & SCHIZO_FLAGS_BSWAR) != 0) {
s = intr_disable();
reg = rd(fprs);
wr(fprs, reg | FPRS_FEF, 0);
__asm __volatile("stda %%f0, [%0] %1"
: : "r" (buf), "n" (ASI_BLK_COMMIT_S));
membar(Sync);
wr(fprs, reg, 0);
intr_restore(s);
return;
}
}
if ((op & BUS_DMASYNC_PREWRITE) != 0)
membar(Sync);
}
static void
schizo_intr_enable(void *arg)
{
struct intr_vector *iv = arg;
struct schizo_icarg *sica = iv->iv_icarg;
SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map,
INTMAP_ENABLE(iv->iv_vec, iv->iv_mid));
}
static void
schizo_intr_disable(void *arg)
{
struct intr_vector *iv = arg;
struct schizo_icarg *sica = iv->iv_icarg;
SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map, iv->iv_vec);
}
static void
schizo_intr_assign(void *arg)
{
struct intr_vector *iv = arg;
struct schizo_icarg *sica = iv->iv_icarg;
SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_map, INTMAP_TID(
SCHIZO_PCI_READ_8(sica->sica_sc, sica->sica_map), iv->iv_mid));
}
static void
schizo_intr_clear(void *arg)
{
struct intr_vector *iv = arg;
struct schizo_icarg *sica = iv->iv_icarg;
SCHIZO_PCI_WRITE_8(sica->sica_sc, sica->sica_clr, INTCLR_IDLE);
}
static int
schizo_setup_intr(device_t dev, device_t child, struct resource *ires,
int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
void **cookiep)
{
struct schizo_softc *sc;
u_long vec;
int error;
sc = device_get_softc(dev);
/*
* Make sure the vector is fully specified.
*/
vec = rman_get_start(ires);
if (INTIGN(vec) != sc->sc_ign) {
device_printf(dev, "invalid interrupt vector 0x%lx\n", vec);
return (EINVAL);
}
if (intr_vectors[vec].iv_ic == &schizo_ic) {
/*
* Ensure we use the right softc in case the interrupt
* is routed to our companion PBM for some odd reason.
*/
sc = ((struct schizo_icarg *)intr_vectors[vec].iv_icarg)->
sica_sc;
} else if (intr_vectors[vec].iv_ic == NULL) {
/*
* Work around broken firmware which misses entries in
* the ino-bitmap.
*/
error = schizo_intr_register(sc, INTINO(vec));
if (error != 0) {
device_printf(dev, "could not register interrupt "
"controller for vector 0x%lx (%d)\n", vec, error);
return (error);
}
if (bootverbose)
device_printf(dev, "belatedly registered as "
"interrupt controller for vector 0x%lx\n", vec);
} else {
device_printf(dev,
"invalid interrupt controller for vector 0x%lx\n", vec);
return (EINVAL);
}
return (bus_generic_setup_intr(dev, child, ires, flags, filt, intr,
arg, cookiep));
}
static struct resource *
schizo_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 schizo_softc *sc;
struct resource *rv;
struct rman *rm;
sc = device_get_softc(bus);
switch (type) {
case 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("%s: XXX: interrupt range", __func__);
start = end = INTMAP_VEC(sc->sc_ign, end);
return (bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags));
case SYS_RES_MEMORY:
rm = &sc->sc_pci_mem_rman;
break;
case SYS_RES_IOPORT:
rm = &sc->sc_pci_io_rman;
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type,
*rid, rv) != 0) {
rman_release_resource(rv);
return (NULL);
}
return (rv);
}
static int
schizo_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
struct schizo_softc *sc;
struct bus_space_tag *tag;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_IRQ:
return (bus_generic_activate_resource(bus, child, type, rid,
r));
case SYS_RES_MEMORY:
tag = sparc64_alloc_bus_tag(r, rman_get_bustag(
sc->sc_mem_res[STX_PCI]), PCI_MEMORY_BUS_SPACE, NULL);
if (tag == NULL)
return (ENOMEM);
rman_set_bustag(r, tag);
rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_MEM32] +
rman_get_start(r));
break;
case SYS_RES_IOPORT:
rman_set_bustag(r, sc->sc_pci_iot);
rman_set_bushandle(r, sc->sc_pci_bh[OFW_PCI_CS_IO] +
rman_get_start(r));
break;
}
return (rman_activate_resource(r));
}
static int
schizo_adjust_resource(device_t bus, device_t child, int type,
struct resource *r, u_long start, u_long end)
{
struct schizo_softc *sc;
struct rman *rm;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_IRQ:
return (bus_generic_adjust_resource(bus, child, type, r,
start, end));
case SYS_RES_MEMORY:
rm = &sc->sc_pci_mem_rman;
break;
case SYS_RES_IOPORT:
rm = &sc->sc_pci_io_rman;
break;
default:
return (EINVAL);
}
if (rman_is_region_manager(r, rm) == 0)
return (EINVAL);
return (rman_adjust_resource(r, start, end));
}
static bus_dma_tag_t
schizo_get_dma_tag(device_t bus, device_t child __unused)
{
struct schizo_softc *sc;
sc = device_get_softc(bus);
return (sc->sc_pci_dmat);
}
static phandle_t
schizo_get_node(device_t bus, device_t child __unused)
{
struct schizo_softc *sc;
sc = device_get_softc(bus);
/* We only have one child, the PCI bus, which needs our own node. */
return (sc->sc_node);
}
static void
schizo_setup_device(device_t bus, device_t child)
{
struct schizo_softc *sc;
uint64_t reg;
int capreg;
sc = device_get_softc(bus);
/*
* Disable bus parking in order to work around a bus hang caused by
* Casinni/Skyhawk combinations.
*/
if (OF_getproplen(ofw_bus_get_node(child), "pci-req-removal") >= 0)
SCHIZO_PCI_SET(sc, STX_PCI_CTRL, SCHIZO_PCI_READ_8(sc,
STX_PCI_CTRL) & ~STX_PCI_CTRL_ARB_PARK);
if (sc->sc_mode == SCHIZO_MODE_XMS) {
/* XMITS NCPQ WAR: set outstanding split transactions to 1. */
if ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 &&
(pci_read_config(child, PCIR_HDRTYPE, 1) &
PCIM_HDRTYPE) != PCIM_HDRTYPE_BRIDGE &&
pci_find_cap(child, PCIY_PCIX, &capreg) == 0)
pci_write_config(child, capreg + PCIXR_COMMAND,
pci_read_config(child, capreg + PCIXR_COMMAND,
2) & 0x7c, 2);
/* XMITS 3.x WAR: set BUGCNTL iff value is unexpected. */
if (sc->sc_mrev >= 4) {
reg = ((sc->sc_flags & SCHIZO_FLAGS_XMODE) != 0 ?
0xa0UL : 0xffUL) << XMS_PCI_X_DIAG_BUGCNTL_SHIFT;
if ((SCHIZO_PCI_READ_8(sc, XMS_PCI_X_DIAG) &
XMS_PCI_X_DIAG_BUGCNTL_MASK) != reg)
SCHIZO_PCI_SET(sc, XMS_PCI_X_DIAG, reg);
}
}
}
static u_int
schizo_get_timecount(struct timecounter *tc)
{
struct schizo_softc *sc;
sc = tc->tc_priv;
return ((SCHIZO_CTRL_READ_8(sc, STX_CTRL_PERF_CNT) &
(STX_CTRL_PERF_CNT_MASK << STX_CTRL_PERF_CNT_CNT0_SHIFT)) >>
STX_CTRL_PERF_CNT_CNT0_SHIFT);
}