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freebsd-skq/sys/sparc64/pci/fire.c
Pedro F. Giffuni 6ce70ec7f9 sys/sparc64: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:10:39 +00:00

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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1999, 2000 Matthew R. Green
* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>
* Copyright (c) 2009 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("$FreeBSD$");
/*
* Driver for `Fire' JBus to PCI Express and `Oberon' Uranus to PCI Express
* bridges
*/
#include "opt_fire.h"
#include "opt_ofw_pci.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/pciio.h>
#include <sys/pcpu.h>
#include <sys/rman.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/timetc.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/bus.h>
#include <machine/bus_common.h>
#include <machine/bus_private.h>
#include <machine/iommureg.h>
#include <machine/iommuvar.h>
#include <machine/resource.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include <sparc64/pci/ofw_pci.h>
#include <sparc64/pci/firereg.h>
#include <sparc64/pci/firevar.h>
#include "pcib_if.h"
struct fire_msiqarg;
static const struct fire_desc *fire_get_desc(device_t dev);
static void fire_dmamap_sync(bus_dma_tag_t dt __unused, bus_dmamap_t map,
bus_dmasync_op_t op);
static int fire_get_intrmap(struct fire_softc *sc, u_int ino,
bus_addr_t *intrmapptr, bus_addr_t *intrclrptr);
static void fire_intr_assign(void *arg);
static void fire_intr_clear(void *arg);
static void fire_intr_disable(void *arg);
static void fire_intr_enable(void *arg);
static int fire_intr_register(struct fire_softc *sc, u_int ino);
static inline void fire_msiq_common(struct intr_vector *iv,
struct fire_msiqarg *fmqa);
static void fire_msiq_filter(void *cookie);
static void fire_msiq_handler(void *cookie);
static void fire_set_intr(struct fire_softc *sc, u_int index, u_int ino,
driver_filter_t handler, void *arg);
static timecounter_get_t fire_get_timecount;
/* Interrupt handlers */
static driver_filter_t fire_dmc_pec;
static driver_filter_t fire_pcie;
static driver_filter_t fire_xcb;
/*
* Methods
*/
static pcib_alloc_msi_t fire_alloc_msi;
static pcib_alloc_msix_t fire_alloc_msix;
static bus_alloc_resource_t fire_alloc_resource;
static device_attach_t fire_attach;
static pcib_map_msi_t fire_map_msi;
static pcib_maxslots_t fire_maxslots;
static device_probe_t fire_probe;
static pcib_read_config_t fire_read_config;
static pcib_release_msi_t fire_release_msi;
static pcib_release_msix_t fire_release_msix;
static pcib_route_interrupt_t fire_route_interrupt;
static bus_setup_intr_t fire_setup_intr;
static bus_teardown_intr_t fire_teardown_intr;
static pcib_write_config_t fire_write_config;
static device_method_t fire_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, fire_probe),
DEVMETHOD(device_attach, fire_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, ofw_pci_read_ivar),
DEVMETHOD(bus_setup_intr, fire_setup_intr),
DEVMETHOD(bus_teardown_intr, fire_teardown_intr),
DEVMETHOD(bus_alloc_resource, fire_alloc_resource),
DEVMETHOD(bus_activate_resource, ofw_pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_adjust_resource, ofw_pci_adjust_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_get_dma_tag, ofw_pci_get_dma_tag),
/* pcib interface */
DEVMETHOD(pcib_maxslots, fire_maxslots),
DEVMETHOD(pcib_read_config, fire_read_config),
DEVMETHOD(pcib_write_config, fire_write_config),
DEVMETHOD(pcib_route_interrupt, fire_route_interrupt),
DEVMETHOD(pcib_alloc_msi, fire_alloc_msi),
DEVMETHOD(pcib_release_msi, fire_release_msi),
DEVMETHOD(pcib_alloc_msix, fire_alloc_msix),
DEVMETHOD(pcib_release_msix, fire_release_msix),
DEVMETHOD(pcib_map_msi, fire_map_msi),
DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_node, ofw_pci_get_node),
DEVMETHOD_END
};
static devclass_t fire_devclass;
DEFINE_CLASS_0(pcib, fire_driver, fire_methods, sizeof(struct fire_softc));
EARLY_DRIVER_MODULE(fire, nexus, fire_driver, fire_devclass, 0, 0,
BUS_PASS_BUS);
MODULE_DEPEND(fire, nexus, 1, 1, 1);
static const struct intr_controller fire_ic = {
fire_intr_enable,
fire_intr_disable,
fire_intr_assign,
fire_intr_clear
};
struct fire_icarg {
struct fire_softc *fica_sc;
bus_addr_t fica_map;
bus_addr_t fica_clr;
};
static const struct intr_controller fire_msiqc_filter = {
fire_intr_enable,
fire_intr_disable,
fire_intr_assign,
NULL
};
struct fire_msiqarg {
struct fire_icarg fmqa_fica;
struct mtx fmqa_mtx;
struct fo_msiq_record *fmqa_base;
uint64_t fmqa_head;
uint64_t fmqa_tail;
uint32_t fmqa_msiq;
uint32_t fmqa_msi;
};
#define FIRE_PERF_CNT_QLTY 100
#define FIRE_SPC_BARRIER(spc, sc, offs, len, flags) \
bus_barrier((sc)->sc_mem_res[(spc)], (offs), (len), (flags))
#define FIRE_SPC_READ_8(spc, sc, offs) \
bus_read_8((sc)->sc_mem_res[(spc)], (offs))
#define FIRE_SPC_WRITE_8(spc, sc, offs, v) \
bus_write_8((sc)->sc_mem_res[(spc)], (offs), (v))
#ifndef FIRE_DEBUG
#define FIRE_SPC_SET(spc, sc, offs, reg, v) \
FIRE_SPC_WRITE_8((spc), (sc), (offs), (v))
#else
#define FIRE_SPC_SET(spc, sc, offs, reg, v) do { \
device_printf((sc)->sc_dev, reg " 0x%016llx -> 0x%016llx\n", \
(unsigned long long)FIRE_SPC_READ_8((spc), (sc), (offs)), \
(unsigned long long)(v)); \
FIRE_SPC_WRITE_8((spc), (sc), (offs), (v)); \
} while (0)
#endif
#define FIRE_PCI_BARRIER(sc, offs, len, flags) \
FIRE_SPC_BARRIER(FIRE_PCI, (sc), (offs), len, flags)
#define FIRE_PCI_READ_8(sc, offs) \
FIRE_SPC_READ_8(FIRE_PCI, (sc), (offs))
#define FIRE_PCI_WRITE_8(sc, offs, v) \
FIRE_SPC_WRITE_8(FIRE_PCI, (sc), (offs), (v))
#define FIRE_CTRL_BARRIER(sc, offs, len, flags) \
FIRE_SPC_BARRIER(FIRE_CTRL, (sc), (offs), len, flags)
#define FIRE_CTRL_READ_8(sc, offs) \
FIRE_SPC_READ_8(FIRE_CTRL, (sc), (offs))
#define FIRE_CTRL_WRITE_8(sc, offs, v) \
FIRE_SPC_WRITE_8(FIRE_CTRL, (sc), (offs), (v))
#define FIRE_PCI_SET(sc, offs, v) \
FIRE_SPC_SET(FIRE_PCI, (sc), (offs), # offs, (v))
#define FIRE_CTRL_SET(sc, offs, v) \
FIRE_SPC_SET(FIRE_CTRL, (sc), (offs), # offs, (v))
struct fire_desc {
const char *fd_string;
int fd_mode;
const char *fd_name;
};
static const struct fire_desc fire_compats[] = {
{ "pciex108e,80f0", FIRE_MODE_FIRE, "Fire" },
#if 0
{ "pciex108e,80f8", FIRE_MODE_OBERON, "Oberon" },
#endif
{ NULL, 0, NULL }
};
static const struct fire_desc *
fire_get_desc(device_t dev)
{
const struct fire_desc *desc;
const char *compat;
compat = ofw_bus_get_compat(dev);
if (compat == NULL)
return (NULL);
for (desc = fire_compats; desc->fd_string != NULL; desc++)
if (strcmp(desc->fd_string, compat) == 0)
return (desc);
return (NULL);
}
static int
fire_probe(device_t dev)
{
const char *dtype;
dtype = ofw_bus_get_type(dev);
if (dtype != NULL && strcmp(dtype, OFW_TYPE_PCIE) == 0 &&
fire_get_desc(dev) != NULL) {
device_set_desc(dev, "Sun Host-PCIe bridge");
return (BUS_PROBE_GENERIC);
}
return (ENXIO);
}
static int
fire_attach(device_t dev)
{
struct fire_softc *sc;
const struct fire_desc *desc;
struct ofw_pci_msi_ranges msi_ranges;
struct ofw_pci_msi_addr_ranges msi_addr_ranges;
struct ofw_pci_msi_eq_to_devino msi_eq_to_devino;
struct fire_msiqarg *fmqa;
struct timecounter *tc;
bus_dma_tag_t dmat;
uint64_t ino_bitmap, val;
phandle_t node;
uint32_t prop, prop_array[2];
int i, j, mode;
u_int lw;
uint16_t mps;
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
desc = fire_get_desc(dev);
mode = desc->fd_mode;
sc->sc_dev = dev;
sc->sc_mode = mode;
sc->sc_flags = 0;
mtx_init(&sc->sc_msi_mtx, "msi_mtx", NULL, MTX_DEF);
mtx_init(&sc->sc_pcib_mtx, "pcib_mtx", NULL, MTX_SPIN);
/*
* Fire and Oberon have two register banks:
* (0) per-PBM PCI Express configuration and status registers
* (1) (shared) Fire/Oberon controller configuration and status
* registers
*/
for (i = 0; i < FIRE_NREG; i++) {
j = i;
sc->sc_mem_res[i] = bus_alloc_resource_any(dev,
SYS_RES_MEMORY, &j, RF_ACTIVE);
if (sc->sc_mem_res[i] == NULL)
panic("%s: could not allocate register bank %d",
__func__, i);
}
if (OF_getprop(node, "portid", &sc->sc_ign, sizeof(sc->sc_ign)) == -1)
panic("%s: could not determine IGN", __func__);
if (OF_getprop(node, "module-revision#", &prop, sizeof(prop)) == -1)
panic("%s: could not determine module-revision", __func__);
device_printf(dev, "%s, module-revision %d, IGN %#x\n",
desc->fd_name, prop, sc->sc_ign);
/*
* 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.
*/
i = OF_getprop(node, "ino-bitmap", (void *)prop_array,
sizeof(prop_array));
if (i == -1)
panic("%s: could not get ino-bitmap", __func__);
ino_bitmap = ((uint64_t)prop_array[1] << 32) | prop_array[0];
for (i = 0; i <= FO_MAX_INO; i++) {
if ((ino_bitmap & (1ULL << i)) == 0)
continue;
j = fire_intr_register(sc, i);
if (j != 0)
device_printf(dev, "could not register interrupt "
"controller for INO %d (%d)\n", i, j);
}
/* JBC/UBC module initialization */
FIRE_CTRL_SET(sc, FO_XBC_ERR_LOG_EN, ~0ULL);
FIRE_CTRL_SET(sc, FO_XBC_ERR_STAT_CLR, ~0ULL);
/* not enabled by OpenSolaris */
FIRE_CTRL_SET(sc, FO_XBC_INT_EN, ~0ULL);
if (sc->sc_mode == FIRE_MODE_FIRE) {
FIRE_CTRL_SET(sc, FIRE_JBUS_PAR_CTRL,
FIRE_JBUS_PAR_CTRL_P_EN);
FIRE_CTRL_SET(sc, FIRE_JBC_FATAL_RST_EN,
((1ULL << FIRE_JBC_FATAL_RST_EN_SPARE_P_INT_SHFT) &
FIRE_JBC_FATAL_RST_EN_SPARE_P_INT_MASK) |
FIRE_JBC_FATAL_RST_EN_MB_PEA_P_INT |
FIRE_JBC_FATAL_RST_EN_CPE_P_INT |
FIRE_JBC_FATAL_RST_EN_APE_P_INT |
FIRE_JBC_FATAL_RST_EN_PIO_CPE_INT |
FIRE_JBC_FATAL_RST_EN_JTCEEW_P_INT |
FIRE_JBC_FATAL_RST_EN_JTCEEI_P_INT |
FIRE_JBC_FATAL_RST_EN_JTCEER_P_INT);
FIRE_CTRL_SET(sc, FIRE_JBC_CORE_BLOCK_INT_EN, ~0ULL);
}
/* TLU initialization */
FIRE_PCI_SET(sc, FO_PCI_TLU_OEVENT_STAT_CLR,
FO_PCI_TLU_OEVENT_S_MASK | FO_PCI_TLU_OEVENT_P_MASK);
/* not enabled by OpenSolaris */
FIRE_PCI_SET(sc, FO_PCI_TLU_OEVENT_INT_EN,
FO_PCI_TLU_OEVENT_S_MASK | FO_PCI_TLU_OEVENT_P_MASK);
FIRE_PCI_SET(sc, FO_PCI_TLU_UERR_STAT_CLR,
FO_PCI_TLU_UERR_INT_S_MASK | FO_PCI_TLU_UERR_INT_P_MASK);
/* not enabled by OpenSolaris */
FIRE_PCI_SET(sc, FO_PCI_TLU_UERR_INT_EN,
FO_PCI_TLU_UERR_INT_S_MASK | FO_PCI_TLU_UERR_INT_P_MASK);
FIRE_PCI_SET(sc, FO_PCI_TLU_CERR_STAT_CLR,
FO_PCI_TLU_CERR_INT_S_MASK | FO_PCI_TLU_CERR_INT_P_MASK);
/* not enabled by OpenSolaris */
FIRE_PCI_SET(sc, FO_PCI_TLU_CERR_INT_EN,
FO_PCI_TLU_CERR_INT_S_MASK | FO_PCI_TLU_CERR_INT_P_MASK);
val = FIRE_PCI_READ_8(sc, FO_PCI_TLU_CTRL) |
((FO_PCI_TLU_CTRL_L0S_TIM_DFLT << FO_PCI_TLU_CTRL_L0S_TIM_SHFT) &
FO_PCI_TLU_CTRL_L0S_TIM_MASK) |
((FO_PCI_TLU_CTRL_CFG_DFLT << FO_PCI_TLU_CTRL_CFG_SHFT) &
FO_PCI_TLU_CTRL_CFG_MASK);
if (sc->sc_mode == FIRE_MODE_OBERON)
val &= ~FO_PCI_TLU_CTRL_NWPR_EN;
val |= FO_PCI_TLU_CTRL_CFG_REMAIN_DETECT_QUIET;
FIRE_PCI_SET(sc, FO_PCI_TLU_CTRL, val);
FIRE_PCI_SET(sc, FO_PCI_TLU_DEV_CTRL, 0);
FIRE_PCI_SET(sc, FO_PCI_TLU_LNK_CTRL, FO_PCI_TLU_LNK_CTRL_CLK);
/* DLU/LPU initialization */
if (sc->sc_mode == FIRE_MODE_OBERON)
FIRE_PCI_SET(sc, FO_PCI_LPU_INT_MASK, 0);
else
FIRE_PCI_SET(sc, FO_PCI_LPU_RST, 0);
FIRE_PCI_SET(sc, FO_PCI_LPU_LNK_LYR_CFG,
FO_PCI_LPU_LNK_LYR_CFG_VC0_EN);
FIRE_PCI_SET(sc, FO_PCI_LPU_FLW_CTRL_UPDT_CTRL,
FO_PCI_LPU_FLW_CTRL_UPDT_CTRL_FC0_NP_EN |
FO_PCI_LPU_FLW_CTRL_UPDT_CTRL_FC0_P_EN);
if (sc->sc_mode == FIRE_MODE_OBERON)
FIRE_PCI_SET(sc, FO_PCI_LPU_TXLNK_RPLY_TMR_THRS,
(OBERON_PCI_LPU_TXLNK_RPLY_TMR_THRS_DFLT <<
FO_PCI_LPU_TXLNK_RPLY_TMR_THRS_SHFT) &
FO_PCI_LPU_TXLNK_RPLY_TMR_THRS_MASK);
else {
switch ((FIRE_PCI_READ_8(sc, FO_PCI_TLU_LNK_STAT) &
FO_PCI_TLU_LNK_STAT_WDTH_MASK) >>
FO_PCI_TLU_LNK_STAT_WDTH_SHFT) {
case 1:
lw = 0;
break;
case 4:
lw = 1;
break;
case 8:
lw = 2;
break;
case 16:
lw = 3;
break;
default:
lw = 0;
}
mps = (FIRE_PCI_READ_8(sc, FO_PCI_TLU_CTRL) &
FO_PCI_TLU_CTRL_CFG_MPS_MASK) >>
FO_PCI_TLU_CTRL_CFG_MPS_SHFT;
i = sizeof(fire_freq_nak_tmr_thrs) /
sizeof(*fire_freq_nak_tmr_thrs);
if (mps >= i)
mps = i - 1;
FIRE_PCI_SET(sc, FO_PCI_LPU_TXLNK_FREQ_LAT_TMR_THRS,
(fire_freq_nak_tmr_thrs[mps][lw] <<
FO_PCI_LPU_TXLNK_FREQ_LAT_TMR_THRS_SHFT) &
FO_PCI_LPU_TXLNK_FREQ_LAT_TMR_THRS_MASK);
FIRE_PCI_SET(sc, FO_PCI_LPU_TXLNK_RPLY_TMR_THRS,
(fire_rply_tmr_thrs[mps][lw] <<
FO_PCI_LPU_TXLNK_RPLY_TMR_THRS_SHFT) &
FO_PCI_LPU_TXLNK_RPLY_TMR_THRS_MASK);
FIRE_PCI_SET(sc, FO_PCI_LPU_TXLNK_RTR_FIFO_PTR,
((FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_TL_DFLT <<
FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_TL_SHFT) &
FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_TL_MASK) |
((FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_HD_DFLT <<
FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_HD_SHFT) &
FO_PCI_LPU_TXLNK_RTR_FIFO_PTR_HD_MASK));
FIRE_PCI_SET(sc, FO_PCI_LPU_LTSSM_CFG2,
(FO_PCI_LPU_LTSSM_CFG2_12_TO_DFLT <<
FO_PCI_LPU_LTSSM_CFG2_12_TO_SHFT) &
FO_PCI_LPU_LTSSM_CFG2_12_TO_MASK);
FIRE_PCI_SET(sc, FO_PCI_LPU_LTSSM_CFG3,
(FO_PCI_LPU_LTSSM_CFG3_2_TO_DFLT <<
FO_PCI_LPU_LTSSM_CFG3_2_TO_SHFT) &
FO_PCI_LPU_LTSSM_CFG3_2_TO_MASK);
FIRE_PCI_SET(sc, FO_PCI_LPU_LTSSM_CFG4,
((FO_PCI_LPU_LTSSM_CFG4_DATA_RATE_DFLT <<
FO_PCI_LPU_LTSSM_CFG4_DATA_RATE_SHFT) &
FO_PCI_LPU_LTSSM_CFG4_DATA_RATE_MASK) |
((FO_PCI_LPU_LTSSM_CFG4_N_FTS_DFLT <<
FO_PCI_LPU_LTSSM_CFG4_N_FTS_SHFT) &
FO_PCI_LPU_LTSSM_CFG4_N_FTS_MASK));
FIRE_PCI_SET(sc, FO_PCI_LPU_LTSSM_CFG5, 0);
}
/* ILU initialization */
FIRE_PCI_SET(sc, FO_PCI_ILU_ERR_STAT_CLR, ~0ULL);
/* not enabled by OpenSolaris */
FIRE_PCI_SET(sc, FO_PCI_ILU_INT_EN, ~0ULL);
/* IMU initialization */
FIRE_PCI_SET(sc, FO_PCI_IMU_ERR_STAT_CLR, ~0ULL);
FIRE_PCI_SET(sc, FO_PCI_IMU_INT_EN,
FIRE_PCI_READ_8(sc, FO_PCI_IMU_INT_EN) &
~(FO_PCI_IMU_ERR_INT_FATAL_MES_NOT_EN_S |
FO_PCI_IMU_ERR_INT_NFATAL_MES_NOT_EN_S |
FO_PCI_IMU_ERR_INT_COR_MES_NOT_EN_S |
FO_PCI_IMU_ERR_INT_FATAL_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_NFATAL_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_COR_MES_NOT_EN_P));
/* MMU initialization */
FIRE_PCI_SET(sc, FO_PCI_MMU_ERR_STAT_CLR,
FO_PCI_MMU_ERR_INT_S_MASK | FO_PCI_MMU_ERR_INT_P_MASK);
/* not enabled by OpenSolaris */
FIRE_PCI_SET(sc, FO_PCI_MMU_INT_EN,
FO_PCI_MMU_ERR_INT_S_MASK | FO_PCI_MMU_ERR_INT_P_MASK);
/* DMC initialization */
FIRE_PCI_SET(sc, FO_PCI_DMC_CORE_BLOCK_INT_EN, ~0ULL);
FIRE_PCI_SET(sc, FO_PCI_DMC_DBG_SEL_PORTA, 0);
FIRE_PCI_SET(sc, FO_PCI_DMC_DBG_SEL_PORTB, 0);
/* PEC initialization */
FIRE_PCI_SET(sc, FO_PCI_PEC_CORE_BLOCK_INT_EN, ~0ULL);
/* Establish handlers for interesting interrupts. */
if ((ino_bitmap & (1ULL << FO_DMC_PEC_INO)) != 0)
fire_set_intr(sc, 1, FO_DMC_PEC_INO, fire_dmc_pec, sc);
if ((ino_bitmap & (1ULL << FO_XCB_INO)) != 0)
fire_set_intr(sc, 0, FO_XCB_INO, fire_xcb, sc);
/* MSI/MSI-X support */
if (OF_getprop(node, "#msi", &sc->sc_msi_count,
sizeof(sc->sc_msi_count)) == -1)
panic("%s: could not determine MSI count", __func__);
if (OF_getprop(node, "msi-ranges", &msi_ranges,
sizeof(msi_ranges)) == -1)
sc->sc_msi_first = 0;
else
sc->sc_msi_first = msi_ranges.first;
if (OF_getprop(node, "msi-data-mask", &sc->sc_msi_data_mask,
sizeof(sc->sc_msi_data_mask)) == -1)
panic("%s: could not determine MSI data mask", __func__);
if (OF_getprop(node, "msix-data-width", &sc->sc_msix_data_width,
sizeof(sc->sc_msix_data_width)) > 0)
sc->sc_flags |= FIRE_MSIX;
if (OF_getprop(node, "msi-address-ranges", &msi_addr_ranges,
sizeof(msi_addr_ranges)) == -1)
panic("%s: could not determine MSI address ranges", __func__);
sc->sc_msi_addr32 = OFW_PCI_MSI_ADDR_RANGE_32(&msi_addr_ranges);
sc->sc_msi_addr64 = OFW_PCI_MSI_ADDR_RANGE_64(&msi_addr_ranges);
if (OF_getprop(node, "#msi-eqs", &sc->sc_msiq_count,
sizeof(sc->sc_msiq_count)) == -1)
panic("%s: could not determine MSI event queue count",
__func__);
if (OF_getprop(node, "msi-eq-size", &sc->sc_msiq_size,
sizeof(sc->sc_msiq_size)) == -1)
panic("%s: could not determine MSI event queue size",
__func__);
if (OF_getprop(node, "msi-eq-to-devino", &msi_eq_to_devino,
sizeof(msi_eq_to_devino)) == -1 &&
OF_getprop(node, "msi-eq-devino", &msi_eq_to_devino,
sizeof(msi_eq_to_devino)) == -1) {
sc->sc_msiq_first = 0;
sc->sc_msiq_ino_first = FO_EQ_FIRST_INO;
} else {
sc->sc_msiq_first = msi_eq_to_devino.eq_first;
sc->sc_msiq_ino_first = msi_eq_to_devino.devino_first;
}
if (sc->sc_msiq_ino_first < FO_EQ_FIRST_INO ||
sc->sc_msiq_ino_first + sc->sc_msiq_count - 1 > FO_EQ_LAST_INO)
panic("%s: event queues exceed INO range", __func__);
sc->sc_msi_bitmap = malloc(roundup2(sc->sc_msi_count, NBBY) / NBBY,
M_DEVBUF, M_NOWAIT | M_ZERO);
if (sc->sc_msi_bitmap == NULL)
panic("%s: could not malloc MSI bitmap", __func__);
sc->sc_msi_msiq_table = malloc(sc->sc_msi_count *
sizeof(*sc->sc_msi_msiq_table), M_DEVBUF, M_NOWAIT | M_ZERO);
if (sc->sc_msi_msiq_table == NULL)
panic("%s: could not malloc MSI-MSI event queue table",
__func__);
sc->sc_msiq_bitmap = malloc(roundup2(sc->sc_msiq_count, NBBY) / NBBY,
M_DEVBUF, M_NOWAIT | M_ZERO);
if (sc->sc_msiq_bitmap == NULL)
panic("%s: could not malloc MSI event queue bitmap", __func__);
j = FO_EQ_RECORD_SIZE * FO_EQ_NRECORDS * sc->sc_msiq_count;
sc->sc_msiq = contigmalloc(j, M_DEVBUF, M_NOWAIT, 0, ~0UL,
FO_EQ_ALIGNMENT, 0);
if (sc->sc_msiq == NULL)
panic("%s: could not contigmalloc MSI event queue", __func__);
memset(sc->sc_msiq, 0, j);
FIRE_PCI_SET(sc, FO_PCI_EQ_BASE_ADDR, FO_PCI_EQ_BASE_ADDR_BYPASS |
(pmap_kextract((vm_offset_t)sc->sc_msiq) &
FO_PCI_EQ_BASE_ADDR_MASK));
for (i = 0; i < sc->sc_msi_count; i++) {
j = (i + sc->sc_msi_first) << 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_MAP_BASE + j,
FIRE_PCI_READ_8(sc, FO_PCI_MSI_MAP_BASE + j) &
~FO_PCI_MSI_MAP_V);
}
for (i = 0; i < sc->sc_msiq_count; i++) {
j = i + sc->sc_msiq_ino_first;
if ((ino_bitmap & (1ULL << j)) == 0) {
mtx_lock(&sc->sc_msi_mtx);
setbit(sc->sc_msiq_bitmap, i);
mtx_unlock(&sc->sc_msi_mtx);
}
fmqa = intr_vectors[INTMAP_VEC(sc->sc_ign, j)].iv_icarg;
mtx_init(&fmqa->fmqa_mtx, "msiq_mtx", NULL, MTX_SPIN);
fmqa->fmqa_base =
(struct fo_msiq_record *)((caddr_t)sc->sc_msiq +
(FO_EQ_RECORD_SIZE * FO_EQ_NRECORDS * i));
j = i + sc->sc_msiq_first;
fmqa->fmqa_msiq = j;
j <<= 3;
fmqa->fmqa_head = FO_PCI_EQ_HD_BASE + j;
fmqa->fmqa_tail = FO_PCI_EQ_TL_BASE + j;
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + j,
FO_PCI_EQ_CTRL_CLR_COVERR | FO_PCI_EQ_CTRL_CLR_E2I |
FO_PCI_EQ_CTRL_CLR_DIS);
FIRE_PCI_WRITE_8(sc, fmqa->fmqa_tail,
(0 << FO_PCI_EQ_TL_SHFT) & FO_PCI_EQ_TL_MASK);
FIRE_PCI_WRITE_8(sc, fmqa->fmqa_head,
(0 << FO_PCI_EQ_HD_SHFT) & FO_PCI_EQ_HD_MASK);
}
FIRE_PCI_SET(sc, FO_PCI_MSI_32_BIT_ADDR, sc->sc_msi_addr32 &
FO_PCI_MSI_32_BIT_ADDR_MASK);
FIRE_PCI_SET(sc, FO_PCI_MSI_64_BIT_ADDR, sc->sc_msi_addr64 &
FO_PCI_MSI_64_BIT_ADDR_MASK);
/*
* Establish a handler for interesting PCIe messages and disable
* unintersting ones.
*/
mtx_lock(&sc->sc_msi_mtx);
for (i = 0; i < sc->sc_msiq_count; i++) {
if (isclr(sc->sc_msiq_bitmap, i) != 0) {
j = i;
break;
}
}
if (i == sc->sc_msiq_count) {
mtx_unlock(&sc->sc_msi_mtx);
panic("%s: no spare event queue for PCIe messages", __func__);
}
setbit(sc->sc_msiq_bitmap, j);
mtx_unlock(&sc->sc_msi_mtx);
i = INTMAP_VEC(sc->sc_ign, j + sc->sc_msiq_ino_first);
if (bus_set_resource(dev, SYS_RES_IRQ, 2, i, 1) != 0)
panic("%s: failed to add interrupt for PCIe messages",
__func__);
fire_set_intr(sc, 2, INTINO(i), fire_pcie, intr_vectors[i].iv_icarg);
j += sc->sc_msiq_first;
/*
* "Please note that setting the EQNUM field to a value larger than
* 35 will yield unpredictable results."
*/
if (j > 35)
panic("%s: invalid queue for PCIe messages (%d)",
__func__, j);
FIRE_PCI_SET(sc, FO_PCI_ERR_COR, FO_PCI_ERR_PME_V |
((j << FO_PCI_ERR_PME_EQNUM_SHFT) & FO_PCI_ERR_PME_EQNUM_MASK));
FIRE_PCI_SET(sc, FO_PCI_ERR_NONFATAL, FO_PCI_ERR_PME_V |
((j << FO_PCI_ERR_PME_EQNUM_SHFT) & FO_PCI_ERR_PME_EQNUM_MASK));
FIRE_PCI_SET(sc, FO_PCI_ERR_FATAL, FO_PCI_ERR_PME_V |
((j << FO_PCI_ERR_PME_EQNUM_SHFT) & FO_PCI_ERR_PME_EQNUM_MASK));
FIRE_PCI_SET(sc, FO_PCI_PM_PME, 0);
FIRE_PCI_SET(sc, FO_PCI_PME_TO_ACK, 0);
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_SET_BASE + (j << 3),
FO_PCI_EQ_CTRL_SET_EN);
#define TC_COUNTER_MAX_MASK 0xffffffff
/*
* Setup JBC/UBC performance counter 0 in bus cycle counting
* mode as timecounter.
*/
if (device_get_unit(dev) == 0) {
FIRE_CTRL_SET(sc, FO_XBC_PRF_CNT0, 0);
FIRE_CTRL_SET(sc, FO_XBC_PRF_CNT1, 0);
FIRE_CTRL_SET(sc, FO_XBC_PRF_CNT_SEL,
(FO_XBC_PRF_CNT_NONE << FO_XBC_PRF_CNT_CNT1_SHFT) |
(FO_XBC_PRF_CNT_XB_CLK << FO_XBC_PRF_CNT_CNT0_SHFT));
tc = malloc(sizeof(*tc), M_DEVBUF, M_NOWAIT | M_ZERO);
if (tc == NULL)
panic("%s: could not malloc timecounter", __func__);
tc->tc_get_timecount = fire_get_timecount;
tc->tc_counter_mask = TC_COUNTER_MAX_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);
tc->tc_priv = sc;
/*
* Due to initial problems with the JBus-driven performance
* counters not advancing which might be firmware dependent
* ensure that it actually works.
*/
if (fire_get_timecount(tc) - fire_get_timecount(tc) != 0)
tc->tc_quality = FIRE_PERF_CNT_QLTY;
else
tc->tc_quality = -FIRE_PERF_CNT_QLTY;
tc_init(tc);
}
/*
* Set up the IOMMU. Both Fire and Oberon have one per PBM, but
* neither has a streaming buffer.
*/
memcpy(&sc->sc_dma_methods, &iommu_dma_methods,
sizeof(sc->sc_dma_methods));
sc->sc_is.is_flags = IOMMU_FIRE | IOMMU_PRESERVE_PROM;
if (sc->sc_mode == FIRE_MODE_OBERON) {
sc->sc_is.is_flags |= IOMMU_FLUSH_CACHE;
sc->sc_is.is_pmaxaddr = IOMMU_MAXADDR(OBERON_IOMMU_BITS);
} else {
sc->sc_dma_methods.dm_dmamap_sync = fire_dmamap_sync;
sc->sc_is.is_pmaxaddr = IOMMU_MAXADDR(FIRE_IOMMU_BITS);
}
sc->sc_is.is_sb[0] = sc->sc_is.is_sb[1] = 0;
/* Punch in our copies. */
sc->sc_is.is_bustag = rman_get_bustag(sc->sc_mem_res[FIRE_PCI]);
sc->sc_is.is_bushandle = rman_get_bushandle(sc->sc_mem_res[FIRE_PCI]);
sc->sc_is.is_iommu = FO_PCI_MMU;
val = FIRE_PCI_READ_8(sc, FO_PCI_MMU + IMR_CTL);
iommu_init(device_get_nameunit(dev), &sc->sc_is, 7, -1, 0);
#ifdef FIRE_DEBUG
device_printf(dev, "FO_PCI_MMU + IMR_CTL 0x%016llx -> 0x%016llx\n",
(long long unsigned)val, (long long unsigned)sc->sc_is.is_cr);
#endif
/* Create our DMA tag. */
if (bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0x100000000,
sc->sc_is.is_pmaxaddr, ~0, NULL, NULL, sc->sc_is.is_pmaxaddr,
0xff, 0xffffffff, 0, NULL, NULL, &dmat) != 0)
panic("%s: could not create PCI DMA tag", __func__);
dmat->dt_cookie = &sc->sc_is;
dmat->dt_mt = &sc->sc_dma_methods;
if (ofw_pci_attach_common(dev, dmat, FO_IO_SIZE, FO_MEM_SIZE) != 0)
panic("%s: ofw_pci_attach_common() failed", __func__);
#define FIRE_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))
FIRE_SYSCTL_ADD_UINT("ilu_err", &sc->sc_stats_ilu_err,
"ILU unknown errors");
FIRE_SYSCTL_ADD_UINT("jbc_ce_async", &sc->sc_stats_jbc_ce_async,
"JBC correctable errors");
FIRE_SYSCTL_ADD_UINT("jbc_unsol_int", &sc->sc_stats_jbc_unsol_int,
"JBC unsolicited interrupt ACK/NACK errors");
FIRE_SYSCTL_ADD_UINT("jbc_unsol_rd", &sc->sc_stats_jbc_unsol_rd,
"JBC unsolicited read response errors");
FIRE_SYSCTL_ADD_UINT("mmu_err", &sc->sc_stats_mmu_err, "MMU errors");
FIRE_SYSCTL_ADD_UINT("tlu_ce", &sc->sc_stats_tlu_ce,
"DLU/TLU correctable errors");
FIRE_SYSCTL_ADD_UINT("tlu_oe_non_fatal",
&sc->sc_stats_tlu_oe_non_fatal,
"DLU/TLU other event non-fatal errors summary");
FIRE_SYSCTL_ADD_UINT("tlu_oe_rx_err", &sc->sc_stats_tlu_oe_rx_err,
"DLU/TLU receive other event errors");
FIRE_SYSCTL_ADD_UINT("tlu_oe_tx_err", &sc->sc_stats_tlu_oe_tx_err,
"DLU/TLU transmit other event errors");
FIRE_SYSCTL_ADD_UINT("ubc_dmardue", &sc->sc_stats_ubc_dmardue,
"UBC DMARDUE erros");
#undef FIRE_SYSCTL_ADD_UINT
device_add_child(dev, "pci", -1);
return (bus_generic_attach(dev));
}
static void
fire_set_intr(struct fire_softc *sc, u_int index, u_int ino,
driver_filter_t handler, void *arg)
{
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 != &fire_ic ||
bus_setup_intr(sc->sc_dev, sc->sc_irq_res[index],
INTR_TYPE_MISC | INTR_BRIDGE, handler, NULL, arg,
&sc->sc_ihand[index]) != 0)
panic("%s: failed to set up interrupt %d", __func__, index);
}
static int
fire_intr_register(struct fire_softc *sc, u_int ino)
{
struct fire_icarg *fica;
bus_addr_t intrclr, intrmap;
int error;
if (fire_get_intrmap(sc, ino, &intrmap, &intrclr) == 0)
return (ENXIO);
fica = malloc((ino >= FO_EQ_FIRST_INO && ino <= FO_EQ_LAST_INO) ?
sizeof(struct fire_msiqarg) : sizeof(struct fire_icarg), M_DEVBUF,
M_NOWAIT | M_ZERO);
if (fica == NULL)
return (ENOMEM);
fica->fica_sc = sc;
fica->fica_map = intrmap;
fica->fica_clr = intrclr;
error = (intr_controller_register(INTMAP_VEC(sc->sc_ign, ino),
&fire_ic, fica));
if (error != 0)
free(fica, M_DEVBUF);
return (error);
}
static int
fire_get_intrmap(struct fire_softc *sc, u_int ino, bus_addr_t *intrmapptr,
bus_addr_t *intrclrptr)
{
if (ino > FO_MAX_INO) {
device_printf(sc->sc_dev, "out of range INO %d requested\n",
ino);
return (0);
}
ino <<= 3;
if (intrmapptr != NULL)
*intrmapptr = FO_PCI_INT_MAP_BASE + ino;
if (intrclrptr != NULL)
*intrclrptr = FO_PCI_INT_CLR_BASE + ino;
return (1);
}
/*
* Interrupt handlers
*/
static int
fire_dmc_pec(void *arg)
{
struct fire_softc *sc;
device_t dev;
uint64_t cestat, dmcstat, ilustat, imustat, mcstat, mmustat, mmutfar;
uint64_t mmutfsr, oestat, pecstat, uestat, val;
u_int fatal, oenfatal;
fatal = 0;
sc = arg;
dev = sc->sc_dev;
mtx_lock_spin(&sc->sc_pcib_mtx);
mcstat = FIRE_PCI_READ_8(sc, FO_PCI_MULTI_CORE_ERR_STAT);
if ((mcstat & FO_PCI_MULTI_CORE_ERR_STAT_DMC) != 0) {
dmcstat = FIRE_PCI_READ_8(sc, FO_PCI_DMC_CORE_BLOCK_ERR_STAT);
if ((dmcstat & FO_PCI_DMC_CORE_BLOCK_INT_EN_IMU) != 0) {
imustat = FIRE_PCI_READ_8(sc, FO_PCI_IMU_INT_STAT);
device_printf(dev, "IMU error %#llx\n",
(unsigned long long)imustat);
if ((imustat &
FO_PCI_IMU_ERR_INT_EQ_NOT_EN_P) != 0) {
fatal = 1;
val = FIRE_PCI_READ_8(sc,
FO_PCI_IMU_SCS_ERR_LOG);
device_printf(dev, "SCS error log %#llx\n",
(unsigned long long)val);
}
if ((imustat & FO_PCI_IMU_ERR_INT_EQ_OVER_P) != 0) {
fatal = 1;
val = FIRE_PCI_READ_8(sc,
FO_PCI_IMU_EQS_ERR_LOG);
device_printf(dev, "EQS error log %#llx\n",
(unsigned long long)val);
}
if ((imustat & (FO_PCI_IMU_ERR_INT_MSI_MAL_ERR_P |
FO_PCI_IMU_ERR_INT_MSI_PAR_ERR_P |
FO_PCI_IMU_ERR_INT_PMEACK_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_PMPME_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_FATAL_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_NFATAL_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_COR_MES_NOT_EN_P |
FO_PCI_IMU_ERR_INT_MSI_NOT_EN_P)) != 0) {
fatal = 1;
val = FIRE_PCI_READ_8(sc,
FO_PCI_IMU_RDS_ERR_LOG);
device_printf(dev, "RDS error log %#llx\n",
(unsigned long long)val);
}
}
if ((dmcstat & FO_PCI_DMC_CORE_BLOCK_INT_EN_MMU) != 0) {
fatal = 1;
mmustat = FIRE_PCI_READ_8(sc, FO_PCI_MMU_INT_STAT);
mmutfar = FIRE_PCI_READ_8(sc,
FO_PCI_MMU_TRANS_FAULT_ADDR);
mmutfsr = FIRE_PCI_READ_8(sc,
FO_PCI_MMU_TRANS_FAULT_STAT);
if ((mmustat & (FO_PCI_MMU_ERR_INT_TBW_DPE_P |
FO_PCI_MMU_ERR_INT_TBW_ERR_P |
FO_PCI_MMU_ERR_INT_TBW_UDE_P |
FO_PCI_MMU_ERR_INT_TBW_DME_P |
FO_PCI_MMU_ERR_INT_TTC_CAE_P |
FIRE_PCI_MMU_ERR_INT_TTC_DPE_P |
OBERON_PCI_MMU_ERR_INT_TTC_DUE_P |
FO_PCI_MMU_ERR_INT_TRN_ERR_P)) != 0)
fatal = 1;
else {
sc->sc_stats_mmu_err++;
FIRE_PCI_WRITE_8(sc, FO_PCI_MMU_ERR_STAT_CLR,
mmustat);
}
device_printf(dev,
"MMU error %#llx: TFAR %#llx TFSR %#llx\n",
(unsigned long long)mmustat,
(unsigned long long)mmutfar,
(unsigned long long)mmutfsr);
}
}
if ((mcstat & FO_PCI_MULTI_CORE_ERR_STAT_PEC) != 0) {
pecstat = FIRE_PCI_READ_8(sc, FO_PCI_PEC_CORE_BLOCK_INT_STAT);
if ((pecstat & FO_PCI_PEC_CORE_BLOCK_INT_STAT_UERR) != 0) {
fatal = 1;
uestat = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_UERR_INT_STAT);
device_printf(dev,
"DLU/TLU uncorrectable error %#llx\n",
(unsigned long long)uestat);
if ((uestat & (FO_PCI_TLU_UERR_INT_UR_P |
OBERON_PCI_TLU_UERR_INT_POIS_P |
FO_PCI_TLU_UERR_INT_MFP_P |
FO_PCI_TLU_UERR_INT_ROF_P |
FO_PCI_TLU_UERR_INT_UC_P |
FIRE_PCI_TLU_UERR_INT_PP_P |
OBERON_PCI_TLU_UERR_INT_POIS_P)) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_RX_UERR_HDR1_LOG);
device_printf(dev,
"receive header log %#llx\n",
(unsigned long long)val);
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_RX_UERR_HDR2_LOG);
device_printf(dev,
"receive header log 2 %#llx\n",
(unsigned long long)val);
}
if ((uestat & FO_PCI_TLU_UERR_INT_CTO_P) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_TX_UERR_HDR1_LOG);
device_printf(dev,
"transmit header log %#llx\n",
(unsigned long long)val);
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_TX_UERR_HDR2_LOG);
device_printf(dev,
"transmit header log 2 %#llx\n",
(unsigned long long)val);
}
if ((uestat & FO_PCI_TLU_UERR_INT_DLP_P) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT);
device_printf(dev,
"link layer interrupt and status %#llx\n",
(unsigned long long)val);
}
if ((uestat & FO_PCI_TLU_UERR_INT_TE_P) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_LPU_PHY_LYR_INT_STAT);
device_printf(dev,
"phy layer interrupt and status %#llx\n",
(unsigned long long)val);
}
}
if ((pecstat & FO_PCI_PEC_CORE_BLOCK_INT_STAT_CERR) != 0) {
sc->sc_stats_tlu_ce++;
cestat = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_CERR_INT_STAT);
device_printf(dev,
"DLU/TLU correctable error %#llx\n",
(unsigned long long)cestat);
val = FIRE_PCI_READ_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT);
device_printf(dev,
"link layer interrupt and status %#llx\n",
(unsigned long long)val);
if ((cestat & FO_PCI_TLU_CERR_INT_RE_P) != 0) {
FIRE_PCI_WRITE_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT, val);
val = FIRE_PCI_READ_8(sc,
FO_PCI_LPU_PHY_LYR_INT_STAT);
device_printf(dev,
"phy layer interrupt and status %#llx\n",
(unsigned long long)val);
}
FIRE_PCI_WRITE_8(sc, FO_PCI_TLU_CERR_STAT_CLR,
cestat);
}
if ((pecstat & FO_PCI_PEC_CORE_BLOCK_INT_STAT_OEVENT) != 0) {
oenfatal = 0;
oestat = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_OEVENT_INT_STAT);
device_printf(dev, "DLU/TLU other event %#llx\n",
(unsigned long long)oestat);
if ((oestat & (FO_PCI_TLU_OEVENT_MFC_P |
FO_PCI_TLU_OEVENT_MRC_P |
FO_PCI_TLU_OEVENT_WUC_P |
FO_PCI_TLU_OEVENT_RUC_P |
FO_PCI_TLU_OEVENT_CRS_P)) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_RX_OEVENT_HDR1_LOG);
device_printf(dev,
"receive header log %#llx\n",
(unsigned long long)val);
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_RX_OEVENT_HDR2_LOG);
device_printf(dev,
"receive header log 2 %#llx\n",
(unsigned long long)val);
if ((oestat & (FO_PCI_TLU_OEVENT_MFC_P |
FO_PCI_TLU_OEVENT_MRC_P |
FO_PCI_TLU_OEVENT_WUC_P |
FO_PCI_TLU_OEVENT_RUC_P)) != 0)
fatal = 1;
else {
sc->sc_stats_tlu_oe_rx_err++;
oenfatal = 1;
}
}
if ((oestat & (FO_PCI_TLU_OEVENT_MFC_P |
FO_PCI_TLU_OEVENT_CTO_P |
FO_PCI_TLU_OEVENT_WUC_P |
FO_PCI_TLU_OEVENT_RUC_P)) != 0) {
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_TX_OEVENT_HDR1_LOG);
device_printf(dev,
"transmit header log %#llx\n",
(unsigned long long)val);
val = FIRE_PCI_READ_8(sc,
FO_PCI_TLU_TX_OEVENT_HDR2_LOG);
device_printf(dev,
"transmit header log 2 %#llx\n",
(unsigned long long)val);
if ((oestat & (FO_PCI_TLU_OEVENT_MFC_P |
FO_PCI_TLU_OEVENT_CTO_P |
FO_PCI_TLU_OEVENT_WUC_P |
FO_PCI_TLU_OEVENT_RUC_P)) != 0)
fatal = 1;
else {
sc->sc_stats_tlu_oe_tx_err++;
oenfatal = 1;
}
}
if ((oestat & (FO_PCI_TLU_OEVENT_ERO_P |
FO_PCI_TLU_OEVENT_EMP_P |
FO_PCI_TLU_OEVENT_EPE_P |
FIRE_PCI_TLU_OEVENT_ERP_P |
OBERON_PCI_TLU_OEVENT_ERBU_P |
FIRE_PCI_TLU_OEVENT_EIP_P |
OBERON_PCI_TLU_OEVENT_EIUE_P)) != 0) {
fatal = 1;
val = FIRE_PCI_READ_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT);
device_printf(dev,
"link layer interrupt and status %#llx\n",
(unsigned long long)val);
}
if ((oestat & (FO_PCI_TLU_OEVENT_IIP_P |
FO_PCI_TLU_OEVENT_EDP_P |
FIRE_PCI_TLU_OEVENT_EHP_P |
OBERON_PCI_TLU_OEVENT_TLUEITMO_S |
FO_PCI_TLU_OEVENT_ERU_P)) != 0)
fatal = 1;
if ((oestat & (FO_PCI_TLU_OEVENT_NFP_P |
FO_PCI_TLU_OEVENT_LWC_P |
FO_PCI_TLU_OEVENT_LIN_P |
FO_PCI_TLU_OEVENT_LRS_P |
FO_PCI_TLU_OEVENT_LDN_P |
FO_PCI_TLU_OEVENT_LUP_P)) != 0)
oenfatal = 1;
if (oenfatal != 0) {
sc->sc_stats_tlu_oe_non_fatal++;
FIRE_PCI_WRITE_8(sc,
FO_PCI_TLU_OEVENT_STAT_CLR, oestat);
if ((oestat & FO_PCI_TLU_OEVENT_LIN_P) != 0)
FIRE_PCI_WRITE_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT,
FIRE_PCI_READ_8(sc,
FO_PCI_LPU_LNK_LYR_INT_STAT));
}
}
if ((pecstat & FO_PCI_PEC_CORE_BLOCK_INT_STAT_ILU) != 0) {
ilustat = FIRE_PCI_READ_8(sc, FO_PCI_ILU_INT_STAT);
device_printf(dev, "ILU error %#llx\n",
(unsigned long long)ilustat);
if ((ilustat & (FIRE_PCI_ILU_ERR_INT_IHB_PE_P |
FIRE_PCI_ILU_ERR_INT_IHB_PE_P)) != 0)
fatal = 1;
else {
sc->sc_stats_ilu_err++;
FIRE_PCI_WRITE_8(sc, FO_PCI_ILU_INT_STAT,
ilustat);
}
}
}
mtx_unlock_spin(&sc->sc_pcib_mtx);
if (fatal != 0)
panic("%s: fatal DMC/PEC error",
device_get_nameunit(sc->sc_dev));
return (FILTER_HANDLED);
}
static int
fire_xcb(void *arg)
{
struct fire_softc *sc;
device_t dev;
uint64_t errstat, intstat, val;
u_int fatal;
fatal = 0;
sc = arg;
dev = sc->sc_dev;
mtx_lock_spin(&sc->sc_pcib_mtx);
if (sc->sc_mode == FIRE_MODE_OBERON) {
intstat = FIRE_CTRL_READ_8(sc, FO_XBC_INT_STAT);
device_printf(dev, "UBC error: interrupt status %#llx\n",
(unsigned long long)intstat);
if ((intstat & ~(OBERON_UBC_ERR_INT_DMARDUEB_P |
OBERON_UBC_ERR_INT_DMARDUEA_P)) != 0)
fatal = 1;
else
sc->sc_stats_ubc_dmardue++;
if (fatal != 0) {
mtx_unlock_spin(&sc->sc_pcib_mtx);
panic("%s: fatal UBC core block error",
device_get_nameunit(sc->sc_dev));
} else {
FIRE_CTRL_SET(sc, FO_XBC_ERR_STAT_CLR, ~0ULL);
mtx_unlock_spin(&sc->sc_pcib_mtx);
}
} else {
errstat = FIRE_CTRL_READ_8(sc, FIRE_JBC_CORE_BLOCK_ERR_STAT);
if ((errstat & (FIRE_JBC_CORE_BLOCK_ERR_STAT_MERGE |
FIRE_JBC_CORE_BLOCK_ERR_STAT_JBCINT |
FIRE_JBC_CORE_BLOCK_ERR_STAT_DMCINT)) != 0) {
intstat = FIRE_CTRL_READ_8(sc, FO_XBC_INT_STAT);
device_printf(dev, "JBC interrupt status %#llx\n",
(unsigned long long)intstat);
if ((intstat & FIRE_JBC_ERR_INT_EBUS_TO_P) != 0) {
val = FIRE_CTRL_READ_8(sc,
FIRE_JBC_CSR_ERR_LOG);
device_printf(dev, "CSR error log %#llx\n",
(unsigned long long)val);
}
if ((intstat & (FIRE_JBC_ERR_INT_UNSOL_RD_P |
FIRE_JBC_ERR_INT_UNSOL_INT_P)) != 0) {
if ((intstat &
FIRE_JBC_ERR_INT_UNSOL_RD_P) != 0)
sc->sc_stats_jbc_unsol_rd++;
if ((intstat &
FIRE_JBC_ERR_INT_UNSOL_INT_P) != 0)
sc->sc_stats_jbc_unsol_int++;
val = FIRE_CTRL_READ_8(sc,
FIRE_DMCINT_IDC_ERR_LOG);
device_printf(dev,
"DMCINT IDC error log %#llx\n",
(unsigned long long)val);
}
if ((intstat & (FIRE_JBC_ERR_INT_MB_PER_P |
FIRE_JBC_ERR_INT_MB_PEW_P)) != 0) {
fatal = 1;
val = FIRE_CTRL_READ_8(sc,
FIRE_MERGE_TRANS_ERR_LOG);
device_printf(dev,
"merge transaction error log %#llx\n",
(unsigned long long)val);
}
if ((intstat & FIRE_JBC_ERR_INT_IJP_P) != 0) {
fatal = 1;
val = FIRE_CTRL_READ_8(sc,
FIRE_JBCINT_OTRANS_ERR_LOG);
device_printf(dev,
"JBCINT out transaction error log "
"%#llx\n", (unsigned long long)val);
val = FIRE_CTRL_READ_8(sc,
FIRE_JBCINT_OTRANS_ERR_LOG2);
device_printf(dev,
"JBCINT out transaction error log 2 "
"%#llx\n", (unsigned long long)val);
}
if ((intstat & (FIRE_JBC_ERR_INT_UE_ASYN_P |
FIRE_JBC_ERR_INT_CE_ASYN_P |
FIRE_JBC_ERR_INT_JTE_P | FIRE_JBC_ERR_INT_JBE_P |
FIRE_JBC_ERR_INT_JUE_P |
FIRE_JBC_ERR_INT_ICISE_P |
FIRE_JBC_ERR_INT_WR_DPE_P |
FIRE_JBC_ERR_INT_RD_DPE_P |
FIRE_JBC_ERR_INT_ILL_BMW_P |
FIRE_JBC_ERR_INT_ILL_BMR_P |
FIRE_JBC_ERR_INT_BJC_P)) != 0) {
if ((intstat & (FIRE_JBC_ERR_INT_UE_ASYN_P |
FIRE_JBC_ERR_INT_JTE_P |
FIRE_JBC_ERR_INT_JBE_P |
FIRE_JBC_ERR_INT_JUE_P |
FIRE_JBC_ERR_INT_ICISE_P |
FIRE_JBC_ERR_INT_WR_DPE_P |
FIRE_JBC_ERR_INT_RD_DPE_P |
FIRE_JBC_ERR_INT_ILL_BMW_P |
FIRE_JBC_ERR_INT_ILL_BMR_P |
FIRE_JBC_ERR_INT_BJC_P)) != 0)
fatal = 1;
else
sc->sc_stats_jbc_ce_async++;
val = FIRE_CTRL_READ_8(sc,
FIRE_JBCINT_ITRANS_ERR_LOG);
device_printf(dev,
"JBCINT in transaction error log %#llx\n",
(unsigned long long)val);
val = FIRE_CTRL_READ_8(sc,
FIRE_JBCINT_ITRANS_ERR_LOG2);
device_printf(dev,
"JBCINT in transaction error log 2 "
"%#llx\n", (unsigned long long)val);
}
if ((intstat & (FIRE_JBC_ERR_INT_PIO_UNMAP_RD_P |
FIRE_JBC_ERR_INT_ILL_ACC_RD_P |
FIRE_JBC_ERR_INT_PIO_UNMAP_P |
FIRE_JBC_ERR_INT_PIO_DPE_P |
FIRE_JBC_ERR_INT_PIO_CPE_P |
FIRE_JBC_ERR_INT_ILL_ACC_P)) != 0) {
fatal = 1;
val = FIRE_CTRL_READ_8(sc,
FIRE_JBC_CSR_ERR_LOG);
device_printf(dev,
"DMCINT ODCD error log %#llx\n",
(unsigned long long)val);
}
if ((intstat & (FIRE_JBC_ERR_INT_MB_PEA_P |
FIRE_JBC_ERR_INT_CPE_P | FIRE_JBC_ERR_INT_APE_P |
FIRE_JBC_ERR_INT_PIO_CPE_P |
FIRE_JBC_ERR_INT_JTCEEW_P |
FIRE_JBC_ERR_INT_JTCEEI_P |
FIRE_JBC_ERR_INT_JTCEER_P)) != 0) {
fatal = 1;
val = FIRE_CTRL_READ_8(sc,
FIRE_FATAL_ERR_LOG);
device_printf(dev, "fatal error log %#llx\n",
(unsigned long long)val);
val = FIRE_CTRL_READ_8(sc,
FIRE_FATAL_ERR_LOG2);
device_printf(dev, "fatal error log 2 "
"%#llx\n", (unsigned long long)val);
}
if (fatal != 0) {
mtx_unlock_spin(&sc->sc_pcib_mtx);
panic("%s: fatal JBC core block error",
device_get_nameunit(sc->sc_dev));
} else {
FIRE_CTRL_SET(sc, FO_XBC_ERR_STAT_CLR, ~0ULL);
mtx_unlock_spin(&sc->sc_pcib_mtx);
}
} else {
mtx_unlock_spin(&sc->sc_pcib_mtx);
panic("%s: unknown JCB core block error status %#llx",
device_get_nameunit(sc->sc_dev),
(unsigned long long)errstat);
}
}
return (FILTER_HANDLED);
}
static int
fire_pcie(void *arg)
{
struct fire_msiqarg *fmqa;
struct fire_softc *sc;
struct fo_msiq_record *qrec;
device_t dev;
uint64_t word0;
u_int head, msg, msiq;
fmqa = arg;
sc = fmqa->fmqa_fica.fica_sc;
dev = sc->sc_dev;
msiq = fmqa->fmqa_msiq;
mtx_lock_spin(&fmqa->fmqa_mtx);
head = (FIRE_PCI_READ_8(sc, fmqa->fmqa_head) & FO_PCI_EQ_HD_MASK) >>
FO_PCI_EQ_HD_SHFT;
qrec = &fmqa->fmqa_base[head];
word0 = qrec->fomqr_word0;
for (;;) {
KASSERT((word0 & FO_MQR_WORD0_FMT_TYPE_MSG) != 0,
("%s: received non-PCIe message in event queue %d "
"(word0 %#llx)", device_get_nameunit(dev), msiq,
(unsigned long long)word0));
msg = (word0 & FO_MQR_WORD0_DATA0_MASK) >>
FO_MQR_WORD0_DATA0_SHFT;
#define PCIE_MSG_CODE_ERR_COR 0x30
#define PCIE_MSG_CODE_ERR_NONFATAL 0x31
#define PCIE_MSG_CODE_ERR_FATAL 0x33
if (msg == PCIE_MSG_CODE_ERR_COR)
device_printf(dev, "correctable PCIe error\n");
else if (msg == PCIE_MSG_CODE_ERR_NONFATAL ||
msg == PCIE_MSG_CODE_ERR_FATAL)
panic("%s: %sfatal PCIe error",
device_get_nameunit(dev),
msg == PCIE_MSG_CODE_ERR_NONFATAL ? "non-" : "");
else
panic("%s: received unknown PCIe message %#x",
device_get_nameunit(dev), msg);
qrec->fomqr_word0 &= ~FO_MQR_WORD0_FMT_TYPE_MASK;
head = (head + 1) % sc->sc_msiq_size;
qrec = &fmqa->fmqa_base[head];
word0 = qrec->fomqr_word0;
if (__predict_true((word0 & FO_MQR_WORD0_FMT_TYPE_MASK) == 0))
break;
}
FIRE_PCI_WRITE_8(sc, fmqa->fmqa_head, (head & FO_PCI_EQ_HD_MASK) <<
FO_PCI_EQ_HD_SHFT);
if ((FIRE_PCI_READ_8(sc, fmqa->fmqa_tail) &
FO_PCI_EQ_TL_OVERR) != 0) {
device_printf(dev, "event queue %d overflow\n", msiq);
msiq <<= 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + msiq,
FIRE_PCI_READ_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + msiq) |
FO_PCI_EQ_CTRL_CLR_COVERR);
}
mtx_unlock_spin(&fmqa->fmqa_mtx);
return (FILTER_HANDLED);
}
static int
fire_maxslots(device_t dev)
{
return (1);
}
static uint32_t
fire_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
int width)
{
return (ofw_pci_read_config_common(dev, PCIE_REGMAX, FO_CONF_OFF(bus,
slot, func, reg), bus, slot, func, reg, width));
}
static void
fire_write_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
uint32_t val, int width)
{
ofw_pci_write_config_common(dev, PCIE_REGMAX, FO_CONF_OFF(bus, slot,
func, reg), bus, slot, func, reg, val, width);
}
static int
fire_route_interrupt(device_t bridge, device_t dev, int pin)
{
ofw_pci_intr_t mintr;
mintr = ofw_pci_route_interrupt_common(bridge, dev, pin);
if (!PCI_INTERRUPT_VALID(mintr))
device_printf(bridge,
"could not route pin %d for device %d.%d\n",
pin, pci_get_slot(dev), pci_get_function(dev));
return (mintr);
}
static void
fire_dmamap_sync(bus_dma_tag_t dt __unused, bus_dmamap_t map,
bus_dmasync_op_t op)
{
if ((map->dm_flags & DMF_LOADED) == 0)
return;
if ((op & BUS_DMASYNC_POSTREAD) != 0)
ofw_pci_dmamap_sync_stst_order_common();
else if ((op & BUS_DMASYNC_PREWRITE) != 0)
membar(Sync);
}
static void
fire_intr_enable(void *arg)
{
struct intr_vector *iv;
struct fire_icarg *fica;
struct fire_softc *sc;
struct pcpu *pc;
uint64_t mr;
u_int ctrl, i;
iv = arg;
fica = iv->iv_icarg;
sc = fica->fica_sc;
mr = FO_PCI_IMAP_V;
if (sc->sc_mode == FIRE_MODE_OBERON)
mr |= (iv->iv_mid << OBERON_PCI_IMAP_T_DESTID_SHFT) &
OBERON_PCI_IMAP_T_DESTID_MASK;
else
mr |= (iv->iv_mid << FIRE_PCI_IMAP_T_JPID_SHFT) &
FIRE_PCI_IMAP_T_JPID_MASK;
/*
* Given that all mondos for the same target are required to use the
* same interrupt controller we just use the CPU ID for indexing the
* latter.
*/
ctrl = 0;
for (i = 0; i < mp_ncpus; ++i) {
pc = pcpu_find(i);
if (pc == NULL || iv->iv_mid != pc->pc_mid)
continue;
ctrl = pc->pc_cpuid % 4;
break;
}
mr |= (1ULL << ctrl) << FO_PCI_IMAP_INT_CTRL_NUM_SHFT &
FO_PCI_IMAP_INT_CTRL_NUM_MASK;
FIRE_PCI_WRITE_8(sc, fica->fica_map, mr);
}
static void
fire_intr_disable(void *arg)
{
struct intr_vector *iv;
struct fire_icarg *fica;
struct fire_softc *sc;
iv = arg;
fica = iv->iv_icarg;
sc = fica->fica_sc;
FIRE_PCI_WRITE_8(sc, fica->fica_map,
FIRE_PCI_READ_8(sc, fica->fica_map) & ~FO_PCI_IMAP_V);
}
static void
fire_intr_assign(void *arg)
{
struct intr_vector *iv;
struct fire_icarg *fica;
struct fire_softc *sc;
uint64_t mr;
iv = arg;
fica = iv->iv_icarg;
sc = fica->fica_sc;
mr = FIRE_PCI_READ_8(sc, fica->fica_map);
if ((mr & FO_PCI_IMAP_V) != 0) {
FIRE_PCI_WRITE_8(sc, fica->fica_map, mr & ~FO_PCI_IMAP_V);
FIRE_PCI_BARRIER(sc, fica->fica_map, 8,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
}
while (FIRE_PCI_READ_8(sc, fica->fica_clr) != INTCLR_IDLE)
;
if ((mr & FO_PCI_IMAP_V) != 0)
fire_intr_enable(arg);
}
static void
fire_intr_clear(void *arg)
{
struct intr_vector *iv;
struct fire_icarg *fica;
iv = arg;
fica = iv->iv_icarg;
FIRE_PCI_WRITE_8(fica->fica_sc, fica->fica_clr, INTCLR_IDLE);
}
/*
* Given that the event queue implementation matches our current MD and MI
* interrupt frameworks like square pegs fit into round holes we are generous
* and use one event queue per MSI for now, which limits us to 35 MSIs/MSI-Xs
* per Host-PCIe-bridge (we use one event queue for the PCIe error messages).
* This seems tolerable as long as most devices just use one MSI/MSI-X anyway.
* Adding knowledge about MSIs/MSI-Xs to the MD interrupt code should allow us
* to decouple the 1:1 mapping at the cost of no longer being able to bind
* MSIs/MSI-Xs to specific CPUs as we currently have no reliable way to
* quiesce a device while we move its MSIs/MSI-Xs to another event queue.
*/
static int
fire_alloc_msi(device_t dev, device_t child, int count, int maxcount __unused,
int *irqs)
{
struct fire_softc *sc;
u_int i, j, msiqrun;
if (powerof2(count) == 0 || count > 32)
return (EINVAL);
sc = device_get_softc(dev);
mtx_lock(&sc->sc_msi_mtx);
msiqrun = 0;
for (i = 0; i < sc->sc_msiq_count; i++) {
for (j = i; j < i + count; j++) {
if (isclr(sc->sc_msiq_bitmap, j) == 0)
break;
}
if (j == i + count) {
msiqrun = i;
break;
}
}
if (i == sc->sc_msiq_count) {
mtx_unlock(&sc->sc_msi_mtx);
return (ENXIO);
}
for (i = 0; i + count < sc->sc_msi_count; i += count) {
for (j = i; j < i + count; j++)
if (isclr(sc->sc_msi_bitmap, j) == 0)
break;
if (j == i + count) {
for (j = 0; j < count; j++) {
setbit(sc->sc_msiq_bitmap, msiqrun + j);
setbit(sc->sc_msi_bitmap, i + j);
sc->sc_msi_msiq_table[i + j] = msiqrun + j;
irqs[j] = sc->sc_msi_first + i + j;
}
mtx_unlock(&sc->sc_msi_mtx);
return (0);
}
}
mtx_unlock(&sc->sc_msi_mtx);
return (ENXIO);
}
static int
fire_release_msi(device_t dev, device_t child, int count, int *irqs)
{
struct fire_softc *sc;
u_int i;
sc = device_get_softc(dev);
mtx_lock(&sc->sc_msi_mtx);
for (i = 0; i < count; i++) {
clrbit(sc->sc_msiq_bitmap,
sc->sc_msi_msiq_table[irqs[i] - sc->sc_msi_first]);
clrbit(sc->sc_msi_bitmap, irqs[i] - sc->sc_msi_first);
}
mtx_unlock(&sc->sc_msi_mtx);
return (0);
}
static int
fire_alloc_msix(device_t dev, device_t child, int *irq)
{
struct fire_softc *sc;
int i, msiq;
sc = device_get_softc(dev);
if ((sc->sc_flags & FIRE_MSIX) == 0)
return (ENXIO);
mtx_lock(&sc->sc_msi_mtx);
msiq = 0;
for (i = 0; i < sc->sc_msiq_count; i++) {
if (isclr(sc->sc_msiq_bitmap, i) != 0) {
msiq = i;
break;
}
}
if (i == sc->sc_msiq_count) {
mtx_unlock(&sc->sc_msi_mtx);
return (ENXIO);
}
for (i = sc->sc_msi_count - 1; i >= 0; i--) {
if (isclr(sc->sc_msi_bitmap, i) != 0) {
setbit(sc->sc_msiq_bitmap, msiq);
setbit(sc->sc_msi_bitmap, i);
sc->sc_msi_msiq_table[i] = msiq;
*irq = sc->sc_msi_first + i;
mtx_unlock(&sc->sc_msi_mtx);
return (0);
}
}
mtx_unlock(&sc->sc_msi_mtx);
return (ENXIO);
}
static int
fire_release_msix(device_t dev, device_t child, int irq)
{
struct fire_softc *sc;
sc = device_get_softc(dev);
if ((sc->sc_flags & FIRE_MSIX) == 0)
return (ENXIO);
mtx_lock(&sc->sc_msi_mtx);
clrbit(sc->sc_msiq_bitmap,
sc->sc_msi_msiq_table[irq - sc->sc_msi_first]);
clrbit(sc->sc_msi_bitmap, irq - sc->sc_msi_first);
mtx_unlock(&sc->sc_msi_mtx);
return (0);
}
static int
fire_map_msi(device_t dev, device_t child, int irq, uint64_t *addr,
uint32_t *data)
{
struct fire_softc *sc;
struct pci_devinfo *dinfo;
sc = device_get_softc(dev);
dinfo = device_get_ivars(child);
if (dinfo->cfg.msi.msi_alloc > 0) {
if ((irq & ~sc->sc_msi_data_mask) != 0) {
device_printf(dev, "invalid MSI 0x%x\n", irq);
return (EINVAL);
}
} else {
if ((sc->sc_flags & FIRE_MSIX) == 0)
return (ENXIO);
if (fls(irq) > sc->sc_msix_data_width) {
device_printf(dev, "invalid MSI-X 0x%x\n", irq);
return (EINVAL);
}
}
if (dinfo->cfg.msi.msi_alloc > 0 &&
(dinfo->cfg.msi.msi_ctrl & PCIM_MSICTRL_64BIT) == 0)
*addr = sc->sc_msi_addr32;
else
*addr = sc->sc_msi_addr64;
*data = irq;
return (0);
}
static void
fire_msiq_handler(void *cookie)
{
struct intr_vector *iv;
struct fire_msiqarg *fmqa;
iv = cookie;
fmqa = iv->iv_icarg;
/*
* Note that since fire_intr_clear() will clear the event queue
* interrupt after the handler associated with the MSI [sic] has
* been executed we have to protect the access to the event queue as
* otherwise nested event queue interrupts cause corruption of the
* event queue on MP machines. Obviously especially when abandoning
* the 1:1 mapping it would be better to not clear the event queue
* interrupt after each handler invocation but only once when the
* outstanding MSIs have been processed but unfortunately that
* doesn't work well and leads to interrupt storms with controllers/
* drivers which don't mask interrupts while the handler is executed.
* Maybe delaying clearing the MSI until after the handler has been
* executed could be used to work around this but that's not the
* intended usage and might in turn cause lost MSIs.
*/
mtx_lock_spin(&fmqa->fmqa_mtx);
fire_msiq_common(iv, fmqa);
mtx_unlock_spin(&fmqa->fmqa_mtx);
}
static void
fire_msiq_filter(void *cookie)
{
struct intr_vector *iv;
struct fire_msiqarg *fmqa;
iv = cookie;
fmqa = iv->iv_icarg;
/*
* For filters we don't use fire_intr_clear() since it would clear
* the event queue interrupt while we're still processing the event
* queue as filters and associated post-filter handler are executed
* directly, which in turn would lead to lost MSIs. So we clear the
* event queue interrupt only once after processing the event queue.
* Given that this still guarantees the filters to not be executed
* concurrently and no other CPU can clear the event queue interrupt
* while the event queue is still processed, we don't even need to
* interlock the access to the event queue in this case.
*/
critical_enter();
fire_msiq_common(iv, fmqa);
FIRE_PCI_WRITE_8(fmqa->fmqa_fica.fica_sc, fmqa->fmqa_fica.fica_clr,
INTCLR_IDLE);
critical_exit();
}
static inline void
fire_msiq_common(struct intr_vector *iv, struct fire_msiqarg *fmqa)
{
struct fire_softc *sc;
struct fo_msiq_record *qrec;
device_t dev;
uint64_t word0;
u_int head, msi, msiq;
sc = fmqa->fmqa_fica.fica_sc;
dev = sc->sc_dev;
msiq = fmqa->fmqa_msiq;
head = (FIRE_PCI_READ_8(sc, fmqa->fmqa_head) & FO_PCI_EQ_HD_MASK) >>
FO_PCI_EQ_HD_SHFT;
qrec = &fmqa->fmqa_base[head];
word0 = qrec->fomqr_word0;
for (;;) {
if (__predict_false((word0 & FO_MQR_WORD0_FMT_TYPE_MASK) == 0))
break;
KASSERT((word0 & FO_MQR_WORD0_FMT_TYPE_MSI64) != 0 ||
(word0 & FO_MQR_WORD0_FMT_TYPE_MSI32) != 0,
("%s: received non-MSI/MSI-X message in event queue %d "
"(word0 %#llx)", device_get_nameunit(dev), msiq,
(unsigned long long)word0));
msi = (word0 & FO_MQR_WORD0_DATA0_MASK) >>
FO_MQR_WORD0_DATA0_SHFT;
/*
* Sanity check the MSI/MSI-X as long as we use a 1:1 mapping.
*/
KASSERT(msi == fmqa->fmqa_msi,
("%s: received non-matching MSI/MSI-X in event queue %d "
"(%d versus %d)", device_get_nameunit(dev), msiq, msi,
fmqa->fmqa_msi));
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_CLR_BASE + (msi << 3),
FO_PCI_MSI_CLR_EQWR_N);
if (__predict_false(intr_event_handle(iv->iv_event,
NULL) != 0))
printf("stray MSI/MSI-X in event queue %d\n", msiq);
qrec->fomqr_word0 &= ~FO_MQR_WORD0_FMT_TYPE_MASK;
head = (head + 1) % sc->sc_msiq_size;
qrec = &fmqa->fmqa_base[head];
word0 = qrec->fomqr_word0;
}
FIRE_PCI_WRITE_8(sc, fmqa->fmqa_head, (head & FO_PCI_EQ_HD_MASK) <<
FO_PCI_EQ_HD_SHFT);
if (__predict_false((FIRE_PCI_READ_8(sc, fmqa->fmqa_tail) &
FO_PCI_EQ_TL_OVERR) != 0)) {
device_printf(dev, "event queue %d overflow\n", msiq);
msiq <<= 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + msiq,
FIRE_PCI_READ_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + msiq) |
FO_PCI_EQ_CTRL_CLR_COVERR);
}
}
static int
fire_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 fire_softc *sc;
struct fire_msiqarg *fmqa;
u_long vec;
int error;
u_int msi, msiq;
sc = device_get_softc(dev);
/*
* XXX this assumes that a device only has one INTx, while in fact
* Cassini+ and Saturn can use all four the firmware has assigned
* to them, but so does pci(4).
*/
if (rman_get_rid(ires) != 0) {
msi = rman_get_start(ires);
msiq = sc->sc_msi_msiq_table[msi - sc->sc_msi_first];
vec = INTMAP_VEC(sc->sc_ign, sc->sc_msiq_ino_first + msiq);
msiq += sc->sc_msiq_first;
if (intr_vectors[vec].iv_ic != &fire_ic) {
device_printf(dev,
"invalid interrupt controller for vector 0x%lx\n",
vec);
return (EINVAL);
}
/*
* The MD interrupt code needs the vector rather than the MSI.
*/
rman_set_start(ires, vec);
rman_set_end(ires, vec);
error = bus_generic_setup_intr(dev, child, ires, flags, filt,
intr, arg, cookiep);
rman_set_start(ires, msi);
rman_set_end(ires, msi);
if (error != 0)
return (error);
fmqa = intr_vectors[vec].iv_icarg;
/*
* XXX inject our event queue handler.
*/
if (filt != NULL) {
intr_vectors[vec].iv_func = fire_msiq_filter;
intr_vectors[vec].iv_ic = &fire_msiqc_filter;
/*
* Ensure the event queue interrupt is cleared, it
* might have triggered before. Given we supply NULL
* as ic_clear, inthand_add() won't do this for us.
*/
FIRE_PCI_WRITE_8(sc, fmqa->fmqa_fica.fica_clr,
INTCLR_IDLE);
} else
intr_vectors[vec].iv_func = fire_msiq_handler;
/* Record the MSI/MSI-X as long as we we use a 1:1 mapping. */
fmqa->fmqa_msi = msi;
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_SET_BASE + (msiq << 3),
FO_PCI_EQ_CTRL_SET_EN);
msi <<= 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_MAP_BASE + msi,
(FIRE_PCI_READ_8(sc, FO_PCI_MSI_MAP_BASE + msi) &
~FO_PCI_MSI_MAP_EQNUM_MASK) |
((msiq << FO_PCI_MSI_MAP_EQNUM_SHFT) &
FO_PCI_MSI_MAP_EQNUM_MASK));
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_CLR_BASE + msi,
FO_PCI_MSI_CLR_EQWR_N);
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_MAP_BASE + msi,
FIRE_PCI_READ_8(sc, FO_PCI_MSI_MAP_BASE + msi) |
FO_PCI_MSI_MAP_V);
return (error);
}
/*
* Make sure the vector is fully specified and we registered
* our interrupt controller for it.
*/
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 != &fire_ic) {
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 int
fire_teardown_intr(device_t dev, device_t child, struct resource *ires,
void *cookie)
{
struct fire_softc *sc;
u_long vec;
int error;
u_int msi, msiq;
sc = device_get_softc(dev);
if (rman_get_rid(ires) != 0) {
msi = rman_get_start(ires);
msiq = sc->sc_msi_msiq_table[msi - sc->sc_msi_first];
vec = INTMAP_VEC(sc->sc_ign, msiq + sc->sc_msiq_ino_first);
msiq += sc->sc_msiq_first;
msi <<= 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_MSI_MAP_BASE + msi,
FIRE_PCI_READ_8(sc, FO_PCI_MSI_MAP_BASE + msi) &
~FO_PCI_MSI_MAP_V);
msiq <<= 3;
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_CTRL_CLR_BASE + msiq,
FO_PCI_EQ_CTRL_CLR_COVERR | FO_PCI_EQ_CTRL_CLR_E2I |
FO_PCI_EQ_CTRL_CLR_DIS);
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_TL_BASE + msiq,
(0 << FO_PCI_EQ_TL_SHFT) & FO_PCI_EQ_TL_MASK);
FIRE_PCI_WRITE_8(sc, FO_PCI_EQ_HD_BASE + msiq,
(0 << FO_PCI_EQ_HD_SHFT) & FO_PCI_EQ_HD_MASK);
intr_vectors[vec].iv_ic = &fire_ic;
/*
* The MD interrupt code needs the vector rather than the MSI.
*/
rman_set_start(ires, vec);
rman_set_end(ires, vec);
error = bus_generic_teardown_intr(dev, child, ires, cookie);
msi >>= 3;
rman_set_start(ires, msi);
rman_set_end(ires, msi);
return (error);
}
return (bus_generic_teardown_intr(dev, child, ires, cookie));
}
static struct resource *
fire_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct fire_softc *sc;
if (type == SYS_RES_IRQ && *rid == 0) {
sc = device_get_softc(bus);
start = end = INTMAP_VEC(sc->sc_ign, end);
}
return (ofw_pci_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
static u_int
fire_get_timecount(struct timecounter *tc)
{
struct fire_softc *sc;
sc = tc->tc_priv;
return (FIRE_CTRL_READ_8(sc, FO_XBC_PRF_CNT0) & TC_COUNTER_MAX_MASK);
}
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