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/*-
* Copyright (c) 2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* Driver for IDT77252 based cards like ProSum's.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/patm/if_patm_attach.c 233024 2012-03-16 08:46:58Z scottl $");
#include "opt_inet.h"
#include "opt_natm.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/errno.h>
#include <sys/conf.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/queue.h>
#include <sys/condvar.h>
#include <vm/uma.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_atm.h>
#include <net/route.h>
#ifdef ENABLE_BPF
#include <net/bpf.h>
#endif
#include <netinet/in.h>
#include <netinet/if_atm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/mbpool.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/utopia/utopia.h>
#include <dev/patm/idt77252reg.h>
#include <dev/patm/if_patmvar.h>
MODULE_DEPEND(patm, utopia, 1, 1, 1);
MODULE_DEPEND(patm, pci, 1, 1, 1);
MODULE_DEPEND(patm, atm, 1, 1, 1);
MODULE_DEPEND(patm, libmbpool, 1, 1, 1);
devclass_t patm_devclass;
static int patm_probe(device_t dev);
static int patm_attach(device_t dev);
static int patm_detach(device_t dev);
static device_method_t patm_methods[] = {
DEVMETHOD(device_probe, patm_probe),
DEVMETHOD(device_attach, patm_attach),
DEVMETHOD(device_detach, patm_detach),
{0,0}
};
static driver_t patm_driver = {
"patm",
patm_methods,
sizeof(struct patm_softc),
};
DRIVER_MODULE(patm, pci, patm_driver, patm_devclass, NULL, 0);
static const struct {
u_int devid;
const char *desc;
} devs[] = {
{ PCI_DEVICE_IDT77252, "NICStAR (77222/77252) ATM adapter" },
{ PCI_DEVICE_IDT77v252, "NICStAR (77v252) ATM adapter" },
{ PCI_DEVICE_IDT77v222, "NICStAR (77v222) ATM adapter" },
{ 0, NULL }
};
SYSCTL_DECL(_hw_atm);
static int patm_phy_readregs(struct ifatm *, u_int, uint8_t *, u_int *);
static int patm_phy_writereg(struct ifatm *, u_int, u_int, u_int);
static const struct utopia_methods patm_utopia_methods = {
patm_phy_readregs,
patm_phy_writereg
};
static void patm_destroy(struct patm_softc *sc);
static int patm_sysctl_istats(SYSCTL_HANDLER_ARGS);
static int patm_sysctl_eeprom(SYSCTL_HANDLER_ARGS);
static void patm_read_eeprom(struct patm_softc *sc);
static int patm_sq_init(struct patm_softc *sc);
static int patm_rbuf_init(struct patm_softc *sc);
static int patm_txmap_init(struct patm_softc *sc);
static void patm_env_getuint(struct patm_softc *, u_int *, const char *);
#ifdef PATM_DEBUG
static int patm_sysctl_regs(SYSCTL_HANDLER_ARGS);
static int patm_sysctl_tsq(SYSCTL_HANDLER_ARGS);
int patm_dump_vc(u_int unit, u_int vc) __unused;
int patm_dump_regs(u_int unit) __unused;
int patm_dump_sram(u_int unit, u_int from, u_int words) __unused;
#endif
/*
* Probe for a IDT77252 controller
*/
static int
patm_probe(device_t dev)
{
u_int i;
if (pci_get_vendor(dev) == PCI_VENDOR_IDT) {
for (i = 0; devs[i].desc != NULL; i++)
if (pci_get_device(dev) == devs[i].devid) {
device_set_desc(dev, devs[i].desc);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
/*
* Attach
*/
static int
patm_attach(device_t dev)
{
struct patm_softc *sc;
int error;
struct ifnet *ifp;
int rid;
u_int a;
static const struct idt_mmap idt_mmap[4] = IDT_MMAP;
sc = device_get_softc(dev);
sc->dev = dev;
#ifdef IATM_DEBUG
sc->debug = IATM_DEBUG;
#endif
ifp = sc->ifp = if_alloc(IFT_ATM);
if (ifp == NULL) {
return (ENOSPC);
}
IFP2IFATM(sc->ifp)->mib.device = ATM_DEVICE_IDTABR25;
IFP2IFATM(sc->ifp)->mib.serial = 0;
IFP2IFATM(sc->ifp)->mib.hw_version = 0;
IFP2IFATM(sc->ifp)->mib.sw_version = 0;
IFP2IFATM(sc->ifp)->mib.vpi_bits = PATM_VPI_BITS;
IFP2IFATM(sc->ifp)->mib.vci_bits = 0; /* set below */;
IFP2IFATM(sc->ifp)->mib.max_vpcs = 0;
IFP2IFATM(sc->ifp)->mib.max_vccs = 0; /* set below */
IFP2IFATM(sc->ifp)->mib.media = IFM_ATM_UNKNOWN;
IFP2IFATM(sc->ifp)->phy = &sc->utopia;
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_SIMPLEX;
ifp->if_init = patm_init;
ifp->if_ioctl = patm_ioctl;
ifp->if_start = patm_start;
/* do this early so we can destroy unconditionally */
mtx_init(&sc->mtx, device_get_nameunit(dev),
MTX_NETWORK_LOCK, MTX_DEF);
mtx_init(&sc->tst_lock, "tst lock", NULL, MTX_DEF);
cv_init(&sc->vcc_cv, "vcc_close");
callout_init(&sc->tst_callout, CALLOUT_MPSAFE);
sysctl_ctx_init(&sc->sysctl_ctx);
/*
* Get revision
*/
sc->revision = pci_read_config(dev, PCIR_REVID, 4) & 0xf;
/*
* Enable PCI bus master and memory
*/
pci_enable_busmaster(dev);
rid = IDT_PCI_REG_MEMBASE;
sc->memres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->memres == NULL) {
patm_printf(sc, "could not map memory\n");
error = ENXIO;
goto fail;
}
sc->memh = rman_get_bushandle(sc->memres);
sc->memt = rman_get_bustag(sc->memres);
/*
* Allocate the interrupt (enable it later)
*/
sc->irqid = 0;
sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->irqres == 0) {
patm_printf(sc, "could not allocate irq\n");
error = ENXIO;
goto fail;
}
/*
* Construct the sysctl tree
*/
error = ENOMEM;
if ((sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_hw_atm), OID_AUTO,
device_get_nameunit(dev), CTLFLAG_RD, 0, "")) == NULL)
goto fail;
if (SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "istats", CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0,
patm_sysctl_istats, "S", "internal statistics") == NULL)
goto fail;
if (SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "eeprom", CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0,
patm_sysctl_eeprom, "S", "EEPROM contents") == NULL)
goto fail;
if (SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "lbuf_max", CTLFLAG_RD, &sc->lbuf_max,
0, "maximum number of large receive buffers") == NULL)
goto fail;
patm_env_getuint(sc, &sc->lbuf_max, "lbuf_max");
if (SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "max_txmaps", CTLFLAG_RW, &sc->tx_maxmaps,
0, "maximum number of TX DMA maps") == NULL)
goto fail;
patm_env_getuint(sc, &sc->tx_maxmaps, "tx_maxmaps");
#ifdef PATM_DEBUG
if (SYSCTL_ADD_UINT(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "debug", CTLFLAG_RW, &sc->debug,
0, "debug flags") == NULL)
goto fail;
sc->debug = PATM_DEBUG;
patm_env_getuint(sc, &sc->debug, "debug");
if (SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "regs", CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0,
patm_sysctl_regs, "S", "registers") == NULL)
goto fail;
if (SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
OID_AUTO, "tsq", CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0,
patm_sysctl_tsq, "S", "TSQ") == NULL)
goto fail;
#endif
patm_reset(sc);
/*
* Detect and attach the phy.
*/
patm_debug(sc, ATTACH, "attaching utopia");
IFP2IFATM(sc->ifp)->phy = &sc->utopia;
utopia_attach(&sc->utopia, IFP2IFATM(sc->ifp), &sc->media, &sc->mtx,
&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
&patm_utopia_methods);
/*
* Start the PHY because we need the autodetection
*/
patm_debug(sc, ATTACH, "starting utopia");
mtx_lock(&sc->mtx);
utopia_start(&sc->utopia);
utopia_reset(&sc->utopia);
mtx_unlock(&sc->mtx);
/* Read EEPROM */
patm_read_eeprom(sc);
/* analyze it */
if (strncmp(sc->eeprom + PATM_PROATM_NAME_OFFSET, PATM_PROATM_NAME,
strlen(PATM_PROATM_NAME)) == 0) {
if (sc->utopia.chip->type == UTP_TYPE_IDT77105) {
IFP2IFATM(sc->ifp)->mib.device = ATM_DEVICE_PROATM25;
IFP2IFATM(sc->ifp)->mib.pcr = ATM_RATE_25_6M;
IFP2IFATM(sc->ifp)->mib.media = IFM_ATM_UTP_25;
sc->flags |= PATM_25M;
patm_printf(sc, "ProATM 25 interface; ");
} else {
/* cannot really know which media */
IFP2IFATM(sc->ifp)->mib.device = ATM_DEVICE_PROATM155;
IFP2IFATM(sc->ifp)->mib.pcr = ATM_RATE_155M;
IFP2IFATM(sc->ifp)->mib.media = IFM_ATM_MM_155;
patm_printf(sc, "ProATM 155 interface; ");
}
bcopy(sc->eeprom + PATM_PROATM_MAC_OFFSET, IFP2IFATM(sc->ifp)->mib.esi,
sizeof(IFP2IFATM(sc->ifp)->mib.esi));
} else {
if (sc->utopia.chip->type == UTP_TYPE_IDT77105) {
IFP2IFATM(sc->ifp)->mib.device = ATM_DEVICE_IDTABR25;
IFP2IFATM(sc->ifp)->mib.pcr = ATM_RATE_25_6M;
IFP2IFATM(sc->ifp)->mib.media = IFM_ATM_UTP_25;
sc->flags |= PATM_25M;
patm_printf(sc, "IDT77252 25MBit interface; ");
} else {
/* cannot really know which media */
IFP2IFATM(sc->ifp)->mib.device = ATM_DEVICE_IDTABR155;
IFP2IFATM(sc->ifp)->mib.pcr = ATM_RATE_155M;
IFP2IFATM(sc->ifp)->mib.media = IFM_ATM_MM_155;
patm_printf(sc, "IDT77252 155MBit interface; ");
}
bcopy(sc->eeprom + PATM_IDT_MAC_OFFSET, IFP2IFATM(sc->ifp)->mib.esi,
sizeof(IFP2IFATM(sc->ifp)->mib.esi));
}
printf("idt77252 Rev. %c; %s PHY\n", 'A' + sc->revision,
sc->utopia.chip->name);
utopia_reset_media(&sc->utopia);
utopia_init_media(&sc->utopia);
/*
* Determine RAM size
*/
for (a = 0; a < 0x20000; a++)
patm_sram_write(sc, a, 0);
patm_sram_write(sc, 0, 0xdeadbeef);
if (patm_sram_read(sc, 0x4004) == 0xdeadbeef)
sc->mmap = &idt_mmap[0];
else if (patm_sram_read(sc, 0x8000) == 0xdeadbeef)
sc->mmap = &idt_mmap[1];
else if (patm_sram_read(sc, 0x20000) == 0xdeadbeef)
sc->mmap = &idt_mmap[2];
else
sc->mmap = &idt_mmap[3];
IFP2IFATM(sc->ifp)->mib.vci_bits = sc->mmap->vcbits - IFP2IFATM(sc->ifp)->mib.vpi_bits;
IFP2IFATM(sc->ifp)->mib.max_vccs = sc->mmap->max_conn;
patm_sram_write(sc, 0, 0);
patm_printf(sc, "%uK x 32 SRAM; %u connections\n", sc->mmap->sram,
sc->mmap->max_conn);
/* initialize status queues */
error = patm_sq_init(sc);
if (error != 0)
goto fail;
/* get TST */
sc->tst_soft = malloc(sizeof(uint32_t) * sc->mmap->tst_size,
M_DEVBUF, M_WAITOK);
/* allocate all the receive buffer stuff */
error = patm_rbuf_init(sc);
if (error != 0)
goto fail;
/*
* Allocate SCD tag
*
* Don't use BUS_DMA_ALLOCNOW, because we never need bouncing with
* bus_dmamem_alloc()
*/
error = bus_dma_tag_create(bus_get_dma_tag(dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, sizeof(struct patm_scd), 1,
sizeof(struct patm_scd), 0, NULL, NULL, &sc->scd_tag);
if (error) {
patm_printf(sc, "SCD DMA tag create %d\n", error);
goto fail;
}
LIST_INIT(&sc->scd_list);
/* allocate VCC zone and pointers */
if ((sc->vcc_zone = uma_zcreate("PATM vccs", sizeof(struct patm_vcc),
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0)) == NULL) {
patm_printf(sc, "cannot allocate zone for vccs\n");
goto fail;
}
sc->vccs = malloc(sizeof(sc->vccs[0]) * sc->mmap->max_conn,
M_DEVBUF, M_WAITOK | M_ZERO);
/* allocate transmission resources */
error = patm_txmap_init(sc);
if (error != 0)
goto fail;
/* poll while we are not running */
sc->utopia.flags |= UTP_FL_POLL_CARRIER;
patm_debug(sc, ATTACH, "attaching interface");
atm_ifattach(ifp);
#ifdef ENABLE_BPF
bpfattach(ifp, DLT_ATM_RFC1483, sizeof(struct atmllc));
#endif
patm_debug(sc, ATTACH, "attaching interrupt handler");
error = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET | INTR_MPSAFE,
NULL, patm_intr, sc, &sc->ih);
if (error != 0) {
patm_printf(sc, "could not setup interrupt\n");
atm_ifdetach(sc->ifp);
if_free(sc->ifp);
goto fail;
}
return (0);
fail:
patm_destroy(sc);
return (error);
}
/*
* Detach
*/
static int
patm_detach(device_t dev)
{
struct patm_softc *sc;
sc = device_get_softc(dev);
mtx_lock(&sc->mtx);
patm_stop(sc);
if (sc->utopia.state & UTP_ST_ATTACHED) {
patm_debug(sc, ATTACH, "detaching utopia");
utopia_stop(&sc->utopia);
utopia_detach(&sc->utopia);
}
mtx_unlock(&sc->mtx);
atm_ifdetach(sc->ifp);
patm_destroy(sc);
return (0);
}
/*
* Destroy everything. Assume we are stopped.
*/
static void
patm_destroy(struct patm_softc *sc)
{
u_int i;
struct patm_txmap *map;
if (sc->ih != NULL)
bus_teardown_intr(sc->dev, sc->irqres, sc->ih);
if (sc->tx_mapzone != NULL) {
/* all maps must be free */
while ((map = SLIST_FIRST(&sc->tx_maps_free)) != NULL) {
bus_dmamap_destroy(sc->tx_tag, map->map);
SLIST_REMOVE_HEAD(&sc->tx_maps_free, link);
uma_zfree(sc->tx_mapzone, map);
}
uma_zdestroy(sc->tx_mapzone);
}
if (sc->scd_tag != NULL)
bus_dma_tag_destroy(sc->scd_tag);
if (sc->tx_tag != NULL)
bus_dma_tag_destroy(sc->scd_tag);
if (sc->vccs != NULL) {
for (i = 0; i < sc->mmap->max_conn; i++)
if (sc->vccs[i] != NULL)
uma_zfree(sc->vcc_zone, sc->vccs[i]);
free(sc->vccs, M_DEVBUF);
}
if (sc->vcc_zone != NULL)
uma_zdestroy(sc->vcc_zone);
if (sc->lbufs != NULL) {
for (i = 0; i < sc->lbuf_max; i++)
bus_dmamap_destroy(sc->lbuf_tag, sc->lbufs[i].map);
free(sc->lbufs, M_DEVBUF);
}
if (sc->lbuf_tag != NULL)
bus_dma_tag_destroy(sc->lbuf_tag);
if (sc->sbuf_pool != NULL)
mbp_destroy(sc->sbuf_pool);
if (sc->vbuf_pool != NULL)
mbp_destroy(sc->vbuf_pool);
if (sc->sbuf_tag != NULL)
bus_dma_tag_destroy(sc->sbuf_tag);
if (sc->tst_soft != NULL)
free(sc->tst_soft, M_DEVBUF);
/*
* Free all status queue memory resources
*/
if (sc->tsq != NULL) {
bus_dmamap_unload(sc->sq_tag, sc->sq_map);
bus_dmamem_free(sc->sq_tag, sc->tsq, sc->sq_map);
bus_dma_tag_destroy(sc->sq_tag);
}
if (sc->irqres != NULL)
bus_release_resource(sc->dev, SYS_RES_IRQ,
sc->irqid, sc->irqres);
if (sc->memres != NULL)
bus_release_resource(sc->dev, SYS_RES_MEMORY,
IDT_PCI_REG_MEMBASE, sc->memres);
/* this was initialize unconditionally */
sysctl_ctx_free(&sc->sysctl_ctx);
cv_destroy(&sc->vcc_cv);
mtx_destroy(&sc->tst_lock);
mtx_destroy(&sc->mtx);
if (sc->ifp != NULL)
if_free(sc->ifp);
}
/*
* Try to find a variable in the environment and parse it as an unsigned
* integer.
*/
static void
patm_env_getuint(struct patm_softc *sc, u_int *var, const char *name)
{
char full[IFNAMSIZ + 3 + 20];
char *val, *end;
u_long u;
snprintf(full, sizeof(full), "hw.%s.%s",
device_get_nameunit(sc->dev), name);
if ((val = getenv(full)) != NULL) {
u = strtoul(val, &end, 0);
if (end > val && *end == '\0') {
if (bootverbose)
patm_printf(sc, "%s=%lu\n", full, u);
*var = u;
}
freeenv(val);
}
}
/*
* Sysctl handler for internal statistics
*
* LOCK: unlocked, needed
*/
static int
patm_sysctl_istats(SYSCTL_HANDLER_ARGS)
{
struct patm_softc *sc = arg1;
uint32_t *ret;
int error;
ret = malloc(sizeof(sc->stats), M_TEMP, M_WAITOK);
mtx_lock(&sc->mtx);
bcopy(&sc->stats, ret, sizeof(sc->stats));
mtx_unlock(&sc->mtx);
error = SYSCTL_OUT(req, ret, sizeof(sc->stats));
free(ret, M_TEMP);
return (error);
}
/*
* Sysctl handler for EEPROM
*
* LOCK: unlocked, needed
*/
static int
patm_sysctl_eeprom(SYSCTL_HANDLER_ARGS)
{
struct patm_softc *sc = arg1;
void *ret;
int error;
ret = malloc(sizeof(sc->eeprom), M_TEMP, M_WAITOK);
mtx_lock(&sc->mtx);
bcopy(sc->eeprom, ret, sizeof(sc->eeprom));
mtx_unlock(&sc->mtx);
error = SYSCTL_OUT(req, ret, sizeof(sc->eeprom));
free(ret, M_TEMP);
return (error);
}
/*
* Read the EEPROM. We assume that this is a XIRCOM 25020
*/
static void
patm_read_eeprom(struct patm_softc *sc)
{
u_int gp;
uint8_t byte;
int i, addr;
static const uint32_t tab[] = {
/* CS transition to reset the chip */
IDT_GP_EECS | IDT_GP_EESCLK, 0,
/* read command 0x03 */
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, IDT_GP_EEDO,
IDT_GP_EESCLK | IDT_GP_EEDO, IDT_GP_EEDO,
IDT_GP_EESCLK | IDT_GP_EEDO, 0,
/* address 0x00 */
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
IDT_GP_EESCLK, 0,
};
/* go to a known state (chip enabled) */
gp = patm_nor_read(sc, IDT_NOR_GP);
gp &= ~(IDT_GP_EESCLK | IDT_GP_EECS | IDT_GP_EEDO);
for (i = 0; i < sizeof(tab) / sizeof(tab[0]); i++) {
patm_nor_write(sc, IDT_NOR_GP, gp | tab[i]);
DELAY(40);
}
/* read out the prom */
for (addr = 0; addr < 256; addr++) {
byte = 0;
for (i = 0; i < 8; i++) {
byte <<= 1;
if (patm_nor_read(sc, IDT_NOR_GP) & IDT_GP_EEDI)
byte |= 1;
/* rising CLK */
patm_nor_write(sc, IDT_NOR_GP, gp | IDT_GP_EESCLK);
DELAY(40);
/* falling clock */
patm_nor_write(sc, IDT_NOR_GP, gp);
DELAY(40);
}
sc->eeprom[addr] = byte;
}
}
/*
* PHY access read
*/
static int
patm_phy_readregs(struct ifatm *ifatm, u_int reg, uint8_t *val, u_int *n)
{
struct patm_softc *sc = ifatm->ifp->if_softc;
u_int cnt = *n;
if (reg >= 0x100)
return (EINVAL);
patm_cmd_wait(sc);
while (reg < 0x100 && cnt > 0) {
patm_nor_write(sc, IDT_NOR_CMD, IDT_MKCMD_RUTIL(1, 0, reg));
patm_cmd_wait(sc);
*val = patm_nor_read(sc, IDT_NOR_D0);
patm_debug(sc, PHY, "phy(%02x)=%02x", reg, *val);
val++;
reg++;
cnt--;
}
*n = *n - cnt;
return (0);
}
/*
* Write PHY reg
*/
static int
patm_phy_writereg(struct ifatm *ifatm, u_int reg, u_int mask, u_int val)
{
struct patm_softc *sc = ifatm->ifp->if_softc;
u_int old, new;
if (reg >= 0x100)
return (EINVAL);
patm_cmd_wait(sc);
patm_nor_write(sc, IDT_NOR_CMD, IDT_MKCMD_RUTIL(1, 0, reg));
patm_cmd_wait(sc);
old = patm_nor_read(sc, IDT_NOR_D0);
new = (old & ~mask) | (val & mask);
patm_debug(sc, PHY, "phy(%02x) %02x -> %02x", reg, old, new);
patm_nor_write(sc, IDT_NOR_D0, new);
patm_nor_write(sc, IDT_NOR_CMD, IDT_MKCMD_WUTIL(1, 0, reg));
patm_cmd_wait(sc);
return (0);
}
/*
* Allocate a large chunk of DMA able memory for the transmit
* and receive status queues. We align this to a page boundary
* to ensure the alignment.
*/
static int
patm_sq_init(struct patm_softc *sc)
{
int error;
void *p;
/* compute size of the two queues */
sc->sq_size = IDT_TSQ_SIZE * IDT_TSQE_SIZE +
PATM_RSQ_SIZE * IDT_RSQE_SIZE +
IDT_RAWHND_SIZE;
patm_debug(sc, ATTACH,
"allocating status queues (%zu) ...", sc->sq_size);
/*
* allocate tag
* Don't use BUS_DMA_ALLOCNOW, because we never need bouncing with
* bus_dmamem_alloc()
*/
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev),
PATM_SQ_ALIGNMENT, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, sc->sq_size, 1, sc->sq_size,
0, NULL, NULL, &sc->sq_tag);
if (error) {
patm_printf(sc, "memory DMA tag create %d\n", error);
return (error);
}
/* allocate memory */
error = bus_dmamem_alloc(sc->sq_tag, &p, 0, &sc->sq_map);
if (error) {
patm_printf(sc, "memory DMA alloc %d\n", error);
bus_dma_tag_destroy(sc->sq_tag);
return (error);
}
/* map it */
sc->tsq_phy = 0x1fff;
error = bus_dmamap_load(sc->sq_tag, sc->sq_map, p,
sc->sq_size, patm_load_callback, &sc->tsq_phy, BUS_DMA_NOWAIT);
if (error) {
patm_printf(sc, "memory DMA map load %d\n", error);
bus_dmamem_free(sc->sq_tag, p, sc->sq_map);
bus_dma_tag_destroy(sc->sq_tag);
return (error);
}
/* set queue start */
sc->tsq = p;
sc->rsq = (void *)((char *)p + IDT_TSQ_SIZE * IDT_TSQE_SIZE);
sc->rsq_phy = sc->tsq_phy + IDT_TSQ_SIZE * IDT_TSQE_SIZE;
sc->rawhnd = (void *)((char *)sc->rsq + PATM_RSQ_SIZE * IDT_RSQE_SIZE);
sc->rawhnd_phy = sc->rsq_phy + PATM_RSQ_SIZE * IDT_RSQE_SIZE;
return (0);
}
/*
* Initialize all receive buffer stuff
*/
static int
patm_rbuf_init(struct patm_softc *sc)
{
u_int i;
int error;
patm_debug(sc, ATTACH, "allocating Rx buffer resources ...");
/*
* Create a tag for small buffers. We allocate these page wise.
* Don't use BUS_DMA_ALLOCNOW, because we never need bouncing with
* bus_dmamem_alloc()
*/
if ((error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
SMBUF_PAGE_SIZE, 1, SMBUF_PAGE_SIZE, 0,
NULL, NULL, &sc->sbuf_tag)) != 0) {
patm_printf(sc, "sbuf DMA tag create %d\n", error);
return (error);
}
error = mbp_create(&sc->sbuf_pool, "patm sbufs", sc->sbuf_tag,
SMBUF_MAX_PAGES, SMBUF_PAGE_SIZE, SMBUF_CHUNK_SIZE);
if (error != 0) {
patm_printf(sc, "smbuf pool create %d\n", error);
return (error);
}
error = mbp_create(&sc->vbuf_pool, "patm vbufs", sc->sbuf_tag,
VMBUF_MAX_PAGES, SMBUF_PAGE_SIZE, VMBUF_CHUNK_SIZE);
if (error != 0) {
patm_printf(sc, "vmbuf pool create %d\n", error);
return (error);
}
/*
* Create a tag for large buffers.
* Don't use BUS_DMA_ALLOCNOW, because it makes no sense with multiple
* maps using one tag. Rather use BUS_DMA_NOWAIT when loading the map
* to prevent EINPROGRESS.
*/
if ((error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), 4, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
MCLBYTES, 1, MCLBYTES, 0,
NULL, NULL, &sc->lbuf_tag)) != 0) {
patm_printf(sc, "lbuf DMA tag create %d\n", error);
return (error);
}
if (sc->lbuf_max < IDT_FBQ_SIZE)
sc->lbuf_max = LMBUF_MAX;
sc->lbufs = malloc(sizeof(sc->lbufs[0]) * sc->lbuf_max,
M_DEVBUF, M_ZERO | M_WAITOK);
SLIST_INIT(&sc->lbuf_free_list);
for (i = 0; i < sc->lbuf_max; i++) {
struct lmbuf *b = &sc->lbufs[i];
error = bus_dmamap_create(sc->lbuf_tag, 0, &b->map);
if (error) {
/* must deallocate here, because a test for NULL
* does not work on most archs */
while (i-- > 0)
bus_dmamap_destroy(sc->lbuf_tag,
sc->lbufs[i].map);
free(sc->lbufs, M_DEVBUF);
sc->lbufs = NULL;
return (error);
}
b->handle = i;
SLIST_INSERT_HEAD(&sc->lbuf_free_list, b, link);
}
return (0);
}
/*
* Allocate everything needed for the transmission maps.
*/
static int
patm_txmap_init(struct patm_softc *sc)
{
int error;
struct patm_txmap *map;
/* get transmission tag */
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 65536, IDT_SCQ_SIZE - 1, 65536,
0, NULL, NULL, &sc->tx_tag);
if (error) {
patm_printf(sc, "cannot allocate TX tag %d\n", error);
return (error);
}
if ((sc->tx_mapzone = uma_zcreate("PATM tx maps",
sizeof(struct patm_txmap), NULL, NULL, NULL, NULL,
UMA_ALIGN_PTR, 0)) == NULL)
return (ENOMEM);
if (sc->tx_maxmaps < PATM_CFG_TXMAPS_MAX)
sc->tx_maxmaps = PATM_CFG_TXMAPS_MAX;
sc->tx_nmaps = PATM_CFG_TXMAPS_INIT;
for (sc->tx_nmaps = 0; sc->tx_nmaps < PATM_CFG_TXMAPS_INIT;
sc->tx_nmaps++) {
map = uma_zalloc(sc->tx_mapzone, M_WAITOK);
error = bus_dmamap_create(sc->tx_tag, 0, &map->map);
if (error) {
uma_zfree(sc->tx_mapzone, map);
return (ENOMEM);
}
SLIST_INSERT_HEAD(&sc->tx_maps_free, map, link);
}
return (0);
}
#ifdef PATM_DEBUG
/*
* Sysctl handler for REGS
*
* LOCK: unlocked, needed
*/
static int
patm_sysctl_regs(SYSCTL_HANDLER_ARGS)
{
struct patm_softc *sc = arg1;
uint32_t *ret;
int error, i;
ret = malloc(IDT_NOR_END, M_TEMP, M_WAITOK);
mtx_lock(&sc->mtx);
for (i = 0; i < IDT_NOR_END; i += 4)
ret[i / 4] = patm_nor_read(sc, i);
mtx_unlock(&sc->mtx);
error = SYSCTL_OUT(req, ret, IDT_NOR_END);
free(ret, M_TEMP);
return (error);
}
/*
* Sysctl handler for TSQ
*
* LOCK: unlocked, needed
*/
static int
patm_sysctl_tsq(SYSCTL_HANDLER_ARGS)
{
struct patm_softc *sc = arg1;
void *ret;
int error;
ret = malloc(IDT_TSQ_SIZE * IDT_TSQE_SIZE, M_TEMP, M_WAITOK);
mtx_lock(&sc->mtx);
memcpy(ret, sc->tsq, IDT_TSQ_SIZE * IDT_TSQE_SIZE);
mtx_unlock(&sc->mtx);
error = SYSCTL_OUT(req, ret, IDT_TSQ_SIZE * IDT_TSQE_SIZE);
free(ret, M_TEMP);
return (error);
}
/*
* debugging
*/
static struct patm_softc *
patm_dump_unit(u_int unit)
{
devclass_t dc;
struct patm_softc *sc;
dc = devclass_find("patm");
if (dc == NULL) {
printf("%s: can't find devclass\n", __func__);
return (NULL);
}
sc = devclass_get_softc(dc, unit);
if (sc == NULL) {
printf("%s: invalid unit number: %d\n", __func__, unit);
return (NULL);
}
return (sc);
}
int
patm_dump_vc(u_int unit, u_int vc)
{
struct patm_softc *sc;
uint32_t tct[8];
uint32_t rct[4];
uint32_t scd[12];
u_int i;
if ((sc = patm_dump_unit(unit)) == NULL)
return (0);
for (i = 0; i < 8; i++)
tct[i] = patm_sram_read(sc, vc * 8 + i);
for (i = 0; i < 4; i++)
rct[i] = patm_sram_read(sc, sc->mmap->rct + vc * 4 + i);
for (i = 0; i < 12; i++)
scd[i] = patm_sram_read(sc, (tct[0] & 0x7ffff) + i);
printf("TCT%3u: %08x %08x %08x %08x %08x %08x %08x %08x\n", vc,
tct[0], tct[1], tct[2], tct[3], tct[4], tct[5], tct[6], tct[7]);
printf("RCT%3u: %08x %08x %08x %08x\n", vc,
rct[0], rct[1], rct[2], rct[3]);
printf("SCD%3u: %08x %08x %08x %08x %08x %08x %08x %08x\n", vc,
scd[0], scd[1], scd[2], scd[3], scd[4], scd[5], scd[6], scd[7]);
printf(" %08x %08x %08x %08x\n",
scd[8], scd[9], scd[10], scd[11]);
return (0);
}
int
patm_dump_regs(u_int unit)
{
struct patm_softc *sc;
u_int i;
if ((sc = patm_dump_unit(unit)) == NULL)
return (0);
for (i = 0; i <= IDT_NOR_DNOW; i += 4)
printf("%x: %08x\n", i, patm_nor_read(sc, i));
return (0);
}
int
patm_dump_sram(u_int unit, u_int from, u_int words)
{
struct patm_softc *sc;
u_int i;
if ((sc = patm_dump_unit(unit)) == NULL)
return (0);
for (i = 0; i < words; i++) {
if (i % 8 == 0)
printf("%05x:", from + i);
printf(" %08x", patm_sram_read(sc, from + i));
if (i % 8 == 7)
printf("\n");
}
if (i % 8 != 0)
printf("\n");
return (0);
}
#endif