NetBSD/sys/dev/marvell/gtpci.c

617 lines
16 KiB
C

/* $NetBSD: gtpci.c,v 1.38 2022/09/25 18:45:45 thorpej Exp $ */
/*
* Copyright (c) 2008, 2009 KIYOHARA Takashi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: gtpci.c,v 1.38 2022/09/25 18:45:45 thorpej Exp $");
#include "opt_pci.h"
#include "pci.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <prop/proplib.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pciconf.h>
#include <dev/marvell/gtpcireg.h>
#include <dev/marvell/gtpcivar.h>
#include <dev/marvell/marvellreg.h>
#include <dev/marvell/marvellvar.h>
#include <machine/pci_machdep.h>
#include "locators.h"
#define GTPCI_READ(sc, r) \
bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, r((sc)->sc_unit))
#define GTPCI_WRITE(sc, r, v) \
bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, r((sc)->sc_unit), (v))
#define GTPCI_WRITE_AC(sc, r, n, v) \
bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, r((sc)->sc_unit, (n)), (v))
static int gtpci_match(device_t, struct cfdata *, void *);
static void gtpci_attach(device_t, device_t, void *);
static void gtpci_init(struct gtpci_softc *, struct gtpci_prot *);
static void gtpci_barinit(struct gtpci_softc *);
static void gtpci_protinit(struct gtpci_softc *, struct gtpci_prot *);
#if NPCI > 0
static void gtpci_pci_config(struct gtpci_softc *, bus_space_tag_t,
bus_space_tag_t, bus_dma_tag_t, pci_chipset_tag_t,
u_long, u_long, u_long, u_long, int);
#endif
CFATTACH_DECL_NEW(gtpci_gt, sizeof(struct gtpci_softc),
gtpci_match, gtpci_attach, NULL, NULL);
CFATTACH_DECL_NEW(gtpci_mbus, sizeof(struct gtpci_softc),
gtpci_match, gtpci_attach, NULL, NULL);
/* ARGSUSED */
static int
gtpci_match(device_t parent, struct cfdata *match, void *aux)
{
struct marvell_attach_args *mva = aux;
if (strcmp(mva->mva_name, match->cf_name) != 0)
return 0;
if (mva->mva_unit == MVA_UNIT_DEFAULT)
return 0;
switch (mva->mva_model) {
case MARVELL_DISCOVERY:
case MARVELL_DISCOVERY_II:
case MARVELL_DISCOVERY_III:
#if 0 /* XXXXX */
case MARVELL_DISCOVERY_LT:
case MARVELL_DISCOVERY_V:
case MARVELL_DISCOVERY_VI:
#endif
if (mva->mva_offset != MVA_OFFSET_DEFAULT)
return 0;
}
mva->mva_size = GTPCI_SIZE;
return 1;
}
/* ARGSUSED */
static void
gtpci_attach(device_t parent, device_t self, void *aux)
{
struct gtpci_softc *sc = device_private(self);
struct marvell_attach_args *mva = aux;
struct gtpci_prot *gtpci_prot;
prop_dictionary_t dict = device_properties(self);
prop_object_t prot;
#if NPCI > 0
prop_object_t pc, iot, memt;
prop_array_t int2gpp;
prop_object_t gpp;
pci_chipset_tag_t gtpci_chipset;
bus_space_tag_t gtpci_io_bs_tag, gtpci_mem_bs_tag;
uint64_t iostart = 0, ioend = 0, memstart = 0, memend = 0;
int cl_size = 0, intr;
#endif
aprint_normal(": Marvell PCI Interface\n");
aprint_naive("\n");
prot = prop_dictionary_get(dict, "prot");
if (prot != NULL) {
KASSERT(prop_object_type(prot) == PROP_TYPE_DATA);
gtpci_prot = __UNCONST(prop_data_data_nocopy(prot));
} else {
aprint_verbose_dev(self, "no protection property\n");
gtpci_prot = NULL;
}
#if NPCI > 0
iot = prop_dictionary_get(dict, "io-bus-tag");
if (iot != NULL) {
KASSERT(prop_object_type(iot) == PROP_TYPE_DATA);
gtpci_io_bs_tag = __UNCONST(prop_data_data_nocopy(iot));
} else {
aprint_error_dev(self, "no io-bus-tag property\n");
gtpci_io_bs_tag = NULL;
}
memt = prop_dictionary_get(dict, "mem-bus-tag");
if (memt != NULL) {
KASSERT(prop_object_type(memt) == PROP_TYPE_DATA);
gtpci_mem_bs_tag = __UNCONST(prop_data_data_nocopy(memt));
} else {
aprint_error_dev(self, "no mem-bus-tag property\n");
gtpci_mem_bs_tag = NULL;
}
pc = prop_dictionary_get(dict, "pci-chipset");
if (pc == NULL) {
aprint_error_dev(self, "no pci-chipset property\n");
return;
}
KASSERT(prop_object_type(pc) == PROP_TYPE_DATA);
gtpci_chipset = __UNCONST(prop_data_data_nocopy(pc));
#ifdef PCI_NETBSD_CONFIGURE
if (!prop_dictionary_get_uint64(dict, "iostart", &iostart)) {
aprint_error_dev(self, "no iostart property\n");
return;
}
if (!prop_dictionary_get_uint64(dict, "ioend", &ioend)) {
aprint_error_dev(self, "no ioend property\n");
return;
}
if (!prop_dictionary_get_uint64(dict, "memstart", &memstart)) {
aprint_error_dev(self, "no memstart property\n");
return;
}
if (!prop_dictionary_get_uint64(dict, "memend", &memend)) {
aprint_error_dev(self, "no memend property\n");
return;
}
if (!prop_dictionary_get_uint32(dict, "cache-line-size", &cl_size)) {
aprint_error_dev(self, "no cache-line-size property\n");
return;
}
#endif
#endif
sc->sc_dev = self;
sc->sc_model = mva->mva_model;
sc->sc_rev = mva->mva_revision;
sc->sc_unit = mva->mva_unit;
sc->sc_iot = mva->mva_iot;
if (bus_space_subregion(mva->mva_iot, mva->mva_ioh,
(mva->mva_offset != MVA_OFFSET_DEFAULT) ? mva->mva_offset : 0,
mva->mva_size, &sc->sc_ioh)) {
aprint_error_dev(self, "can't map registers\n");
return;
}
sc->sc_pc = gtpci_chipset;
gtpci_init(sc, gtpci_prot);
#if NPCI > 0
int2gpp = prop_dictionary_get(dict, "int2gpp");
if (int2gpp != NULL) {
if (prop_object_type(int2gpp) != PROP_TYPE_ARRAY) {
aprint_error_dev(self, "int2gpp not an array\n");
return;
}
aprint_normal_dev(self, "use interrupt pin:");
for (intr = PCI_INTERRUPT_PIN_A;
intr <= PCI_INTERRUPT_PIN_D &&
intr < prop_array_count(int2gpp);
intr++) {
gpp = prop_array_get(int2gpp, intr);
if (prop_object_type(gpp) != PROP_TYPE_NUMBER) {
aprint_error_dev(self,
"int2gpp[%d] not an number\n", intr);
return;
}
aprint_normal(" %d",
(int)prop_number_integer_value(gpp));
}
aprint_normal("\n");
}
gtpci_pci_config(sc, gtpci_io_bs_tag, gtpci_mem_bs_tag, mva->mva_dmat,
gtpci_chipset, iostart, ioend, memstart, memend, cl_size);
#endif
}
static void
gtpci_init(struct gtpci_softc *sc, struct gtpci_prot *prot)
{
uint32_t reg;
/* First, all disable. Also WA CQ 4382 (bit15 must set 1)*/
GTPCI_WRITE(sc, GTPCI_BARE, GTPCI_BARE_ALLDISABLE | (1 << 15));
/* Enable Internal Arbiter */
reg = GTPCI_READ(sc, GTPCI_AC);
reg |= GTPCI_AC_EN;
GTPCI_WRITE(sc, GTPCI_AC, reg);
gtpci_barinit(sc);
if (prot != NULL)
gtpci_protinit(sc, prot);
reg = GTPCI_READ(sc, GTPCI_ADC);
reg |= GTPCI_ADC_REMAPWRDIS;
GTPCI_WRITE(sc, GTPCI_ADC, reg);
/* enable CPU-2-PCI ordering */
reg = GTPCI_READ(sc, GTPCI_C);
reg |= GTPCI_C_CPU2PCIORDERING;
GTPCI_WRITE(sc, GTPCI_C, reg);
}
static void
gtpci_barinit(struct gtpci_softc *sc)
{
static const struct {
int tag;
int bars[2]; /* BAR Size registers */
int bare; /* Bits of Base Address Registers Enable */
int func;
int balow;
int bahigh;
} maps[] = {
{ MARVELL_TAG_SDRAM_CS0,
{ GTPCI_CS0BARS(0), GTPCI_CS0BARS(1) },
GTPCI_BARE_CS0EN, 0, 0x10, 0x14 },
{ MARVELL_TAG_SDRAM_CS1,
{ GTPCI_CS1BARS(0), GTPCI_CS1BARS(1) },
GTPCI_BARE_CS1EN, 0, 0x18, 0x1c },
{ MARVELL_TAG_SDRAM_CS2,
{ GTPCI_CS2BARS(0), GTPCI_CS2BARS(1) },
GTPCI_BARE_CS2EN, 1, 0x10, 0x14 },
{ MARVELL_TAG_SDRAM_CS3,
{ GTPCI_CS3BARS(0), GTPCI_CS3BARS(1) },
GTPCI_BARE_CS3EN, 1, 0x18, 0x1c },
#if 0
{ ORION_TARGETID_INTERNALREG,
{ -1, -1 },
GTPCI_BARE_INTMEMEN, 0, 0x20, 0x24 },
{ ORION_TARGETID_DEVICE_CS0,
{ GTPCI_DCS0BARS(0), GTPCI_DCS0BARS(1) },
GTPCI_BARE_DEVCS0EN, 2, 0x10, 0x14 },
{ ORION_TARGETID_DEVICE_CS1,
{ GTPCI_DCS1BARS(0), GTPCI_DCS1BARS(1) },
GTPCI_BARE_DEVCS1EN, 2, 0x18, 0x1c },
{ ORION_TARGETID_DEVICE_CS2,
{ GTPCI_DCS2BARS(0), GTPCI_DCS2BARS(1) },
GTPCI_BARE_DEVCS2EN, 2, 0x20, 0x24 },
{ ORION_TARGETID_DEVICE_BOOTCS,
{ GTPCI_BCSBARS(0), GTPCI_BCSBARS(1) },
GTPCI_BARE_BOOTCSEN, 3, 0x18, 0x1c },
{ P2P Mem0 BAR,
{ GTPCI_P2PM0BARS(0), GTPCI_P2PM0BARS(1) },
GTPCI_BARE_P2PMEM0EN, 4, 0x10, 0x14 },
{ P2P I/O BAR,
{ GTPCI_P2PIOBARS(0), GTPCI_P2PIOBARS(1) },
GTPCI_BARE_P2PIO0EN, 4, 0x20, 0x24 },
{ Expansion ROM BAR,
{ GTPCI_EROMBARS(0), GTPCI_EROMBARS(1) },
0, },
#endif
{ MARVELL_TAG_UNDEFINED,
{ -1, -1 },
-1, -1, 0x00, 0x00 },
};
device_t pdev = device_parent(sc->sc_dev);
uint64_t base;
uint32_t size, bare;
int map, rv;
bare = GTPCI_BARE_ALLDISABLE;
for (map = 0; maps[map].tag != MARVELL_TAG_UNDEFINED; map++) {
rv = marvell_winparams_by_tag(pdev, maps[map].tag, NULL, NULL,
&base, &size);
if (rv != 0 || size == 0)
continue;
if (maps[map].bars[sc->sc_unit] != -1)
bus_space_write_4(sc->sc_iot, sc->sc_ioh,
maps[map].bars[sc->sc_unit], GTPCI_BARSIZE(size));
bare &= ~maps[map].bare;
#if 0 /* shall move to pchb(4)? */
if (maps[map].func != -1) {
pcitag_t tag;
pcireg_t reg;
int dev = GTPCI_P2PC_DEVNUM(p2pc);
int bus = GTPCI_P2PC_BUSNUMBER(p2pc);
uint32_t p2pc = GTPCI_READ(sc, GTPCI_P2PC);
tag = gtpci_make_tag(NULL, bus, dev, maps[map].func);
reg = gtpci_conf_read(sc, tag, maps[map].balow);
reg &= ~GTPCI_BARLOW_MASK;
reg |= GTPCI_BARLOW_BASE(base);
gtpci_conf_write(sc, tag, maps[map].balow, reg);
reg = gtpci_conf_read(sc, tag, maps[map].bahigh);
reg = (base >> 16) >> 16;
gtpci_conf_write(sc, tag, maps[map].bahigh, reg);
}
#endif
}
GTPCI_WRITE(sc, GTPCI_BARE, bare);
}
static void
gtpci_protinit(struct gtpci_softc *sc, struct gtpci_prot *ac_flags)
{
enum {
gt642xx = 0,
mv643xx,
arm_soc,
};
const struct gtpci_ac_rshift {
uint32_t base_rshift;
uint32_t size_rshift;
} ac_rshifts[] = {
{ 20, 20, }, /* GT642xx */
{ 0, 0, }, /* MV643xx and after */
{ 0, 0, }, /* ARM SoC */
};
const uint32_t prot_tags[] = {
MARVELL_TAG_SDRAM_CS0,
MARVELL_TAG_SDRAM_CS1,
MARVELL_TAG_SDRAM_CS2,
MARVELL_TAG_SDRAM_CS3,
MARVELL_TAG_UNDEFINED
};
device_t pdev = device_parent(sc->sc_dev);
uint64_t acbase, base;
uint32_t acsize, size;
int base_rshift, size_rshift, acbl_flags, acs_flags;
int prot, rv, p, t;
switch (sc->sc_model) {
case MARVELL_DISCOVERY:
p = gt642xx;
break;
case MARVELL_DISCOVERY_II:
case MARVELL_DISCOVERY_III:
#if 0
case MARVELL_DISCOVERY_LT:
case MARVELL_DISCOVERY_V:
case MARVELL_DISCOVERY_VI:
#endif
p = mv643xx;
break;
default:
p = arm_soc;
break;
}
base_rshift = ac_rshifts[p].base_rshift;
size_rshift = ac_rshifts[p].size_rshift;
acbl_flags = ac_flags->acbl_flags;
acs_flags = ac_flags->acs_flags;
t = 0;
for (prot = 0; prot < GTPCI_NPCIAC; prot++) {
acbase = acsize = 0;
for ( ; prot_tags[t] != MARVELL_TAG_UNDEFINED; t++) {
rv = marvell_winparams_by_tag(pdev, prot_tags[t],
NULL, NULL, &base, &size);
if (rv != 0 || size == 0)
continue;
if (acsize == 0 || base + size == acbase)
acbase = base;
else if (acbase + acsize != base)
break;
acsize += size;
}
if (acsize != 0) {
GTPCI_WRITE_AC(sc, GTPCI_ACBL, prot,
((acbase & 0xffffffff) >> base_rshift) | acbl_flags);
GTPCI_WRITE_AC(sc, GTPCI_ACBH, prot,
(acbase >> 32) & 0xffffffff);
GTPCI_WRITE_AC(sc, GTPCI_ACS, prot,
((acsize - 1) >> size_rshift) | acs_flags);
} else {
GTPCI_WRITE_AC(sc, GTPCI_ACBL, prot, 0);
GTPCI_WRITE_AC(sc, GTPCI_ACBH, prot, 0);
GTPCI_WRITE_AC(sc, GTPCI_ACS, prot, 0);
}
}
return;
}
#if NPCI > 0
static void
gtpci_pci_config(struct gtpci_softc *sc, bus_space_tag_t iot,
bus_space_tag_t memt, bus_dma_tag_t dmat, pci_chipset_tag_t pc,
u_long iostart, u_long ioend, u_long memstart, u_long memend,
int cacheline_size)
{
struct pcibus_attach_args pba;
uint32_t p2pc, command;
p2pc = GTPCI_READ(sc, GTPCI_P2PC);
#ifdef PCI_NETBSD_CONFIGURE
struct pciconf_resources *pcires = pciconf_resource_init();
pciconf_resource_add(pcires, PCICONF_RESOURCE_IO,
iostart, (ioend - iostart) + 1);
pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM,
memstart, (memend - memstart) + 1);
pci_configure_bus(pc, pcires,
GTPCI_P2PC_BUSNUMBER(p2pc), cacheline_size);
pciconf_resource_fini(pcires);
#endif
pba.pba_iot = iot;
pba.pba_memt = memt;
pba.pba_dmat = dmat;
pba.pba_dmat64 = NULL;
pba.pba_pc = pc;
if (iot == NULL || memt == NULL) {
pba.pba_flags = 0;
aprint_error_dev(sc->sc_dev, "");
if (iot == NULL)
aprint_error("io ");
else
pba.pba_flags |= PCI_FLAGS_IO_OKAY;
if (iot == NULL && memt == NULL)
aprint_error("and ");
if (memt == NULL)
aprint_error("mem");
else
pba.pba_flags |= PCI_FLAGS_MEM_OKAY;
aprint_error(" access disabled\n");
} else
pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY;
command = GTPCI_READ(sc, GTPCI_C);
if (command & GTPCI_C_MRDMUL)
pba.pba_flags |= PCI_FLAGS_MRM_OKAY;
if (command & GTPCI_C_MRDLINE)
pba.pba_flags |= PCI_FLAGS_MRL_OKAY;
pba.pba_flags |= PCI_FLAGS_MWI_OKAY;
pba.pba_bus = GTPCI_P2PC_BUSNUMBER(p2pc);
pba.pba_bridgetag = NULL;
config_found(sc->sc_dev, &pba, NULL, CFARGS_NONE);
}
/*
* Dependent code of PCI Interface of Marvell
*/
/* ARGSUSED */
void
gtpci_attach_hook(device_t parent, device_t self,
struct pcibus_attach_args *pba)
{
/* Nothing */
}
/*
* Bit map for configuration register:
* [31] ConfigEn
* [30:24] Reserved
* [23:16] BusNum
* [15:11] DevNum
* [10: 8] FunctNum
* [ 7: 2] RegNum
* [ 1: 0] reserved
*/
/* ARGSUSED */
int
gtpci_bus_maxdevs(void *v, int busno)
{
return 32; /* 32 device/bus */
}
/* ARGSUSED */
pcitag_t
gtpci_make_tag(void *v, int bus, int dev, int func)
{
#if DIAGNOSTIC
if (bus >= 256 || dev >= 32 || func >= 8)
panic("pci_make_tag: bad request");
#endif
return (bus << 16) | (dev << 11) | (func << 8);
}
/* ARGSUSED */
void
gtpci_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp, int *fp)
{
if (bp != NULL)
*bp = (tag >> 16) & 0xff;
if (dp != NULL)
*dp = (tag >> 11) & 0x1f;
if (fp != NULL)
*fp = (tag >> 8) & 0x07;
}
pcireg_t
gtpci_conf_read(void *v, pcitag_t tag, int reg)
{
struct gtpci_softc *sc = v;
const pcireg_t addr = tag | reg;
if ((unsigned int)reg >= PCI_CONF_SIZE)
return -1;
GTPCI_WRITE(sc, GTPCI_CA, addr | GTPCI_CA_CONFIGEN);
if ((addr | GTPCI_CA_CONFIGEN) != GTPCI_READ(sc, GTPCI_CA))
return -1;
return GTPCI_READ(sc, GTPCI_CD);
}
void
gtpci_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data)
{
struct gtpci_softc *sc = v;
pcireg_t addr = tag | (reg & 0xfc);
if ((unsigned int)reg >= PCI_CONF_SIZE)
return;
GTPCI_WRITE(sc, GTPCI_CA, addr | GTPCI_CA_CONFIGEN);
if ((addr | GTPCI_CA_CONFIGEN) != GTPCI_READ(sc, GTPCI_CA))
return;
GTPCI_WRITE(sc, GTPCI_CD, data);
}
/* ARGSUSED */
int
gtpci_conf_hook(void *v, int bus, int dev, int func, pcireg_t id)
{
/* Oops, We have two PCI buses. */
if (dev == 0 &&
PCI_VENDOR(id) == PCI_VENDOR_MARVELL) {
switch (PCI_PRODUCT(id)) {
case MARVELL_DISCOVERY:
case MARVELL_DISCOVERY_II:
case MARVELL_DISCOVERY_III:
#if 0
case MARVELL_DISCOVERY_LT:
case MARVELL_DISCOVERY_V:
case MARVELL_DISCOVERY_VI:
#endif
case MARVELL_ORION_1_88F5180N:
case MARVELL_ORION_1_88F5181:
case MARVELL_ORION_1_88F5182:
case MARVELL_ORION_2_88F5281:
case MARVELL_ORION_1_88W8660:
/* Don't configure us. */
return 0;
}
}
return PCI_CONF_DEFAULT;
}
#endif /* NPCI > 0 */