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NetBSD/sys/dev/isa/if_ntwoc_isa.c

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/* $NetBSD: if_ntwoc_isa.c,v 1.15 2006/11/16 01:33:00 christos Exp $ */
/*
* Copyright (c) 1999 Christian E. Hopps
* Copyright (c) 1996 John Hay.
* Copyright (c) 1996 SDL Communications, Inc.
* 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
* $Id: if_ntwoc_isa.c,v 1.15 2006/11/16 01:33:00 christos Exp $
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ntwoc_isa.c,v 1.15 2006/11/16 01:33:00 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/isa/isavar.h>
#include <dev/ic/hd64570reg.h>
#include <dev/ic/hd64570var.h>
#include <dev/isa/if_ntwoc_isareg.h>
#if 1
#define NTWO_DEBUG
#endif
#ifdef NTWO_DEBUG
#define NTWO_DPRINTF(x) printf x
#else
#define NTWO_DPRINTF(x)
#endif
#if __NetBSD_Version__ >= 104160000
static void ntwoc_isa_config_interrupts(struct device *);
#else
#define SCA_BASECLOCK 9830400
#endif
/* hard core 16k for now */
#define NTWOC_WIN_SIZE 0x4000
struct ntwoc_isa_softc {
/* Generic device stuff */
struct device sc_dev; /* Common to all devices */
/* PCI chipset glue */
void *sc_ih; /* Interrupt handler */
isa_chipset_tag_t sc_ic; /* ISA chipset handle */
struct sca_softc sc_sca; /* the SCA itself */
};
static int ntwoc_isa_probe(struct device *, struct cfdata *, void *);
static void ntwoc_isa_attach(struct device *, struct device *, void *);
static void ntwoc_isa_clock_callback(void *, int, int);
static void ntwoc_isa_dtr_callback(void *, int, int);
static int ntwoc_isa_intr(void *);
static void ntwoc_isa_get_clock(struct sca_port *, u_int8_t, u_int8_t,
u_int8_t, u_int8_t);
static void ntwoc_isa_setup_memory(struct sca_softc *sc);
static void ntwoc_isa_shutdown(void *sc);
CFATTACH_DECL(ntwoc_isa, sizeof(struct ntwoc_isa_softc),
ntwoc_isa_probe, ntwoc_isa_attach, NULL, NULL);
/*
* Names for daughter card types. These match the NTWOC_DB_* defines.
*/
const char *ntwoc_db_names[] = {
"V.35", "Unknown 0x01", "Test", "Unknown 0x03",
"RS232", "Unknown 0x05", "RS422", "None"
};
/* some weird offset XXX */
#define SCA_REG(r) (((r) & 0xf) + (((r) & 0xf0) << 6))
/*
* functions that read and write to the sca registers
*/
static void
ntwoc_isa_sca_write_1(struct sca_softc *sc, u_int reg, u_int8_t val)
{
bus_space_write_1(sc->sc_iot, sc->scu_sca_ioh[(reg & 0xf0) >> 4],
(reg & 0xf), val);
}
static void
ntwoc_isa_sca_write_2(struct sca_softc *sc, u_int reg, u_int16_t val)
{
bus_space_write_2(sc->sc_iot, sc->scu_sca_ioh[(reg & 0xf0) >> 4],
(reg & 0xf), val);
}
static u_int8_t
ntwoc_isa_sca_read_1(struct sca_softc *sc, u_int reg)
{
return
bus_space_read_1(sc->sc_iot, sc->scu_sca_ioh[(reg & 0xf0) >> 4],
(reg & 0xf));
}
static u_int16_t
ntwoc_isa_sca_read_2(struct sca_softc *sc, u_int reg)
{
return
bus_space_read_2(sc->sc_iot, sc->scu_sca_ioh[(reg & 0xf0) >> 4],
(reg & 0xf));
}
/*
* set the correct window/page
*/
static void
ntwoc_isa_set_page(struct sca_softc *sca, bus_addr_t addr)
{
u_int8_t psr;
/* get old psr value replace old window with new */
psr = bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PSR);
psr &= ~NTWOC_PG_MSK;
psr |= ((addr >> sca->scu_pageshift) & NTWOC_PG_MSK);
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PSR, psr);
}
/*
* enable the memory window
*/
static void
ntwoc_isa_set_on(struct sca_softc *sca)
{
u_int8_t pcr;
/* get old value and add window enable */
pcr = bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR);
pcr |= NTWOC_PCR_MEM_WIN;
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR, pcr);
}
/*
* turn off memory window
*/
static void
ntwoc_isa_set_off(struct sca_softc *sca)
{
u_int8_t pcr;
/* get old value and remove window enable */
pcr = bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR);
pcr &= ~NTWOC_PCR_MEM_WIN;
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR, pcr);
}
static int
ntwoc_isa_probe(struct device *parent, struct cfdata *match, void *aux)
{
struct isa_attach_args *ia;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh, sca_ioh[16];
int i, tmp, dbg, rv;
int gotmem, gotsca[16];
u_int32_t ioport;
ia = (struct isa_attach_args *)aux;
iot = ia->ia_iot;
memt = ia->ia_memt;
if (ia->ia_nio < 1)
return (0);
if (ia->ia_niomem < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
memset(gotsca, 0, sizeof(gotsca));
gotmem = rv = 0;
dbg = 0;
/* disallow wildcarded I/O base */
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) {
printf("ntwoc_isa_probe: must specify port address\n");
return (0);
}
if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) {
printf("ntwoc_isa_probe: must specify irq\n");
return (0);
}
if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM) {
printf("ntwoc_isa_probe: must specify iomem\n");
return (0);
}
tmp = (match->cf_flags & NTWOC_FLAGS_NPORT_MASK) + 1;
if (tmp < 1 || tmp > 2) {
printf("ntwoc_isa_probe: only 1 or 2 ports allowed\n");
return (0);
}
/* map the isa io addresses */
if ((tmp = bus_space_map(iot, ia->ia_io[0].ir_addr,
NTWOC_SRC_IOPORT_SIZE, 0, &ioh))) {
printf("ntwoc_isa_probe: mapping port 0x%x sz %d failed: %d\n",
ia->ia_io[0].ir_addr, NTWOC_SRC_IOPORT_SIZE, tmp);
return (0);
}
ioport = ia->ia_io[0].ir_addr + 0x8000;
for (i = 0; i < 16; ioport += (0x10 << 6), i++) {
/* map the isa io addresses */
if ((tmp = bus_space_map(iot, ioport, 16, 0, &sca_ioh[i]))) {
printf(
"ntwoc_isa_probe: mapping sca 0x%x sz %d failed: %d\n",
ioport, 16, tmp);
goto out;
}
gotsca[i] = 1;
}
/* map the isa memory addresses */
/* XXX we really want the user to select this */
if ((tmp = bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr,
NTWOC_WIN_SIZE, 0, &memh))) {
printf("ntwoc_isa_probe: mapping mem 0x%x sz %d failed: %d\n",
ia->ia_iomem[0].ir_addr, NTWOC_WIN_SIZE, tmp);
goto out;
}
gotmem = 1;
/* turn off the card */
bus_space_write_1(iot, ioh, NTWOC_PCR, 0);
/*
* Next, we'll test the Base Address Register to retension of
* data... ... seeing if we're *really* talking to an N2.
*/
for (i = 0; i < 0x100; i++) {
bus_space_write_1(iot, ioh, NTWOC_BAR, i);
(void)bus_space_read_1(iot, ioh, NTWOC_PCR);
if (bus_space_read_1(iot, ioh, NTWOC_BAR) != i) {
printf("ntwoc_isa_probe failed (BAR %x, %x)\n", i, tmp);
goto out;
}
}
/* XXX XXX update the calls to SCA_REG to use our mapping */
/*
* Now see if we can see the SCA.
*/
bus_space_write_1(iot, ioh, NTWOC_PCR,
NTWOC_PCR_SCARUN | bus_space_read_1(iot, ioh, NTWOC_PCR));
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_WCRL), 0);
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_WCRM), 0);
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_WCRH), 0);
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_PCR), 0);
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0), 0);
(void)bus_space_read_1(iot, ioh, 0);
if ((tmp = bus_space_read_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0))) != 0) {
printf("ntwoc_isa_probe: Error reading SCA (TMC0 0, %x)\n",
tmp);
goto out;
}
bus_space_write_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0), 0x5A);
(void)bus_space_read_1(iot, ioh, 0);
tmp = bus_space_read_1(iot, sca_ioh[0], SCA_REG(SCA_TMC0));
if (tmp != 0x5A) {
printf("ntwoc_isa_probe: Error reading SCA (TMC0 5A, %x)\n",
tmp);
goto out;
}
bus_space_write_2(iot, sca_ioh[0], SCA_REG(SCA_CDAL0), 0);
(void)bus_space_read_1(iot, ioh, 0);
tmp = bus_space_read_2(iot, sca_ioh[0], SCA_REG(SCA_CDAL0));
if (tmp != 0) {
printf("ntwoc_isa_probe: Error reading SCA (CDAL0 0, %x)\n",
tmp);
goto out;
}
bus_space_write_2(iot, sca_ioh[0], SCA_REG(SCA_CDAL0), 0x55AA);
(void)bus_space_read_1(iot, ioh, 0);
tmp = bus_space_read_2(iot, sca_ioh[0], SCA_REG(SCA_CDAL0));
if (tmp != 0x55AA) {
printf("ntwoc_isa_probe: Error reading SCA (CDAL0 55AA, %x)\n",
tmp);
goto out;
}
/*
* I had a weird card that didn't function correctly on a certain
* newer MB. I suspect it was the whacky port addresses.
* The following correctly failed it.
*/
bus_space_write_2(iot, sca_ioh[0], SCA_REG(SCA_TCNTL0), 0x0);
(void)bus_space_read_1(iot, ioh, 0);
tmp = bus_space_read_2(iot, sca_ioh[0], SCA_REG(SCA_TCNTL0));
if (tmp != 0) {
printf("ntwoc_isa_probe: Error reading SCA (TCNTL0 0, %x)\n",
tmp);
goto out;
}
bus_space_write_2(iot, sca_ioh[0], SCA_REG(SCA_TCNTL0), 0x55AA);
(void)bus_space_read_1(iot, ioh, 0);
tmp = bus_space_read_2(iot, sca_ioh[0], SCA_REG(SCA_TCNTL0));
if (tmp != 0x55AA) {
printf("ntwoc_isa_probe: Error reading SCA (TCNTL0 55AA, %x)\n",
tmp);
goto out;
}
ia->ia_nio = 1;
ia->ia_io[0].ir_size = NTWOC_SRC_IOPORT_SIZE;
ia->ia_niomem = 1;
ia->ia_iomem[0].ir_size = NTWOC_WIN_SIZE;
ia->ia_nirq = 1;
ia->ia_ndrq = 0;
rv = 1;
out:
/* turn off the card */
bus_space_write_1(iot, ioh, NTWOC_PCR, 0);
if (gotmem)
bus_space_unmap(memt, memh, NTWOC_WIN_SIZE);
for (i = 0; i < 16; i++) {
if (gotsca[i])
bus_space_unmap(iot, sca_ioh[i], 16);
}
bus_space_unmap(iot, ioh, NTWOC_SRC_IOPORT_SIZE);
return (rv);
}
/*
* we win! attach the card
*/
static void
ntwoc_isa_attach(struct device *parent, struct device *self, void *aux)
{
struct ntwoc_isa_softc *sc;
struct isa_attach_args *ia;
struct sca_softc *sca;
bus_addr_t addr;
u_int8_t rdiv, tdiv, tmc;
u_int32_t flags, ioport;
u_int16_t tmp;
int i, dbg, pgs, rv;
ia = (struct isa_attach_args *)aux;
sc = (struct ntwoc_isa_softc *)self;
sca = &sc->sc_sca;
dbg = 0;
printf(": N2 Serial Interface\n");
flags = device_cfdata(&sc->sc_dev)->cf_flags;
sc->sc_ic = ia->ia_ic;
sca->sc_parent = &sc->sc_dev;
sca->sc_numports = (flags & NTWOC_FLAGS_NPORT_MASK) + 1;
sca->sc_usedma = 0;
sca->sc_aux = sc;
sca->sc_dtr_callback = ntwoc_isa_dtr_callback;
sca->sc_clock_callback = ntwoc_isa_clock_callback;
sca->sc_read_1 = ntwoc_isa_sca_read_1;
sca->sc_read_2 = ntwoc_isa_sca_read_2;
sca->sc_write_1 = ntwoc_isa_sca_write_1;
sca->sc_write_2 = ntwoc_isa_sca_write_2;
sca->scu_set_page = ntwoc_isa_set_page;
sca->scu_page_on = ntwoc_isa_set_on;
sca->scu_page_off = ntwoc_isa_set_off;
/* map the io */
sca->sc_iot = ia->ia_iot;
if ((rv = bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr,
NTWOC_SRC_IOPORT_SIZE, 0, &sca->sc_ioh))) {
printf("%s: can't map io 0x%x sz %d, %d\n",
sc->sc_dev.dv_xname, ia->ia_io[0].ir_addr,
NTWOC_SRC_IOPORT_SIZE, rv);
return;
}
/* support weird mapping (they used this to avoid 10-bit aliasing) */
ioport = ia->ia_io[0].ir_addr + 0x8000;
for (i = 0; i < 16; ioport += (0x10 << 6), i++) {
/* map the isa io addresses */
if ((tmp = bus_space_map(ia->ia_iot, ioport, 16, 0,
&sca->scu_sca_ioh[i]))) {
printf("%s: mapping sca 0x%x sz %d failed: %d\n",
sc->sc_dev.dv_xname, ioport, 16, tmp);
return;
}
}
/* map the isa memory */
sca->scu_memt = ia->ia_memt;
sca->scu_pagesize = 0x4000; /* force 16k for now */
if (sca->scu_pagesize < 0x8000) {
/* round down to 16k */
sca->scu_pagesize = 0x4000;
sca->scu_pageshift = 14;
tmp = NTWOC_PSR_WIN_16K;
} else if (sca->scu_pagesize < 0x10000) {
/* round down to 32k */
sca->scu_pagesize = 0x8000;
sca->scu_pageshift = 15;
tmp = NTWOC_PSR_WIN_32K;
} else if (sca->scu_pagesize < 0x20000) {
/* round down to 64k */
sca->scu_pagesize = 0x10000;
sca->scu_pageshift = 16;
tmp = NTWOC_PSR_WIN_64K;
} else {
sca->scu_pagesize = 0x20000;
sca->scu_pageshift = 17;
tmp = NTWOC_PSR_WIN_128K;
}
sca->scu_pagemask = sca->scu_pagesize - 1;
if ((rv = bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr,
sca->scu_pagesize, 0, &sca->scu_memh))) {
printf("%s: can't map mem 0x%x sz %ld, %d\n",
sc->sc_dev.dv_xname, ia->ia_iomem[0].ir_addr,
sca->scu_pagesize, rv);
return;
}
/* turn the card on!! */
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR,
bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR)
| NTWOC_PCR_SCARUN);
/* set the window size to 16k */
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PSR, tmp);
/* reset mcr */
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_MCR,
NTWOC_MCR_DTR0 | NTWOC_MCR_DTR1 | NTWOC_MCR_TE0 | NTWOC_MCR_TE1);
/* allow for address above 1M and 16 bit i/o */
#if 0
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR,
bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR)
| NTWOC_PCR_EN_VPM | NTWOC_PCR_ISA16);
#endif
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR,
bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR)
| NTWOC_PCR_ISA16);
/* program the card with the io address */
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR,
((ia->ia_iomem[0].ir_addr >> 16) & NTWOC_PCR_16M_SEL)
|
(bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PCR)
& ~NTWOC_PCR_16M_SEL));
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_BAR,
(ia->ia_iomem[0].ir_addr >> 12));
/* enable the memory window */
ntwoc_isa_set_on(sca);
/*
* write a magic value into each possible page of memory
* incrementing by our window size
*/
addr = 0;
for (i = 0; i <= NTWOC_PSR_PG_SEL; addr += sca->scu_pagesize, i++) {
/* select the page */
ntwoc_isa_set_page(sca, addr);
bus_space_write_2(sca->scu_memt, sca->scu_memh, 0, 0xAA55);
}
/*
* go back through pages and verify that value is different
* after writing to previous page
*/
addr = 0;
for (i = 0; i <= NTWOC_PSR_PG_SEL; addr += sca->scu_pagesize, i++) {
ntwoc_isa_set_page(sca, addr);
tmp = bus_space_read_2(sca->scu_memt, sca->scu_memh, 0);
if (tmp != 0xAA55)
break;
/* write a different value into this page now */
bus_space_write_2(sca->scu_memt, sca->scu_memh, 0, i);
}
sca->scu_npages = pgs = i; /* final count of 16K pages */
/* erase the pages */
addr = 0;
for (i = 0; i <= pgs; addr += sca->scu_pagesize, i++) {
ntwoc_isa_set_page(sca, addr);
bus_space_set_region_1(sca->scu_memt, sca->scu_memh, 0, 0,
sca->scu_pagesize);
}
#if 0
printf("%s: sca port 0x%x-0x%x dpram %ldk %d serial port%s\n",
sc->sc_dev.dv_xname, ia->ia_io[0].ir_addr | 0x8000,
(ia->ia_io[0].ir_addr | 0x8000) + NTWOC_SRC_ASIC_SIZE - 1,
pgs * (sca->scu_pagesize / 1024), sca->sc_numports,
(sca->sc_numports > 1 ? "s" : ""));
#else
printf("%s: dpram %ldk %d serial port%s\n",
sc->sc_dev.dv_xname, pgs * (sca->scu_pagesize / 1024),
sca->sc_numports, (sca->sc_numports > 1 ? "s" : ""));
#endif
/* disable the memory window */
ntwoc_isa_set_off(sca);
/* enabled sca DMA */
bus_space_write_1(sca->sc_iot, sca->sc_ioh, NTWOC_PSR,
bus_space_read_1(sca->sc_iot, sca->sc_ioh, NTWOC_PSR)
| NTWOC_PSR_EN_SCA_DMA);
/* now establish our irq -- perhaps sanity check the value */
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
IST_EDGE, IPL_NET, ntwoc_isa_intr, sc);
if (sc->sc_ih == NULL) {
printf("%s: can't establish interrupt\n",
sc->sc_dev.dv_xname);
return;
}
/* make sure we have 2 pages for each port */
if (pgs < 2 * sca->sc_numports) {
printf("%s: %d less than required pages of memory of %d\n",
sc->sc_dev.dv_xname, pgs, 2 * sca->sc_numports);
return;
}
/* sca_get_base_clock(sca); */
/*
* get clock information from user
*/
rdiv = (flags & NTWOC_FLAGS_RXDIV_MASK) >> NTWOC_FLAGS_RXDIV_SHIFT;
if (rdiv > 9)
panic("bad rx divisor in flags");
tdiv = (flags & NTWOC_FLAGS_TXDIV_MASK) >> NTWOC_FLAGS_TXDIV_SHIFT;
if (tdiv > 9)
panic("bad tx divisor in flags");
tmc = (flags & NTWOC_FLAGS_TMC_MASK) >> NTWOC_FLAGS_TMC_SHIFT;
ntwoc_isa_get_clock(&sca->sc_ports[0],
flags & NTWOC_FLAGS_CLK0_MASK, tmc, rdiv, tdiv);
if (sca->sc_numports > 1)
ntwoc_isa_get_clock(&sca->sc_ports[1],
(flags & NTWOC_FLAGS_CLK1_MASK) >> NTWOC_FLAGS_CLK1_SHIFT,
tmc, rdiv, tdiv);
ntwoc_isa_setup_memory(sca);
sca_init(sca);
/* attach configured ports */
sca_port_attach(sca, 0);
if (sca->sc_numports == 2)
sca_port_attach(sca, 1);
/*
* Add shutdown hook so that DMA is disabled prior to reboot. Not
* doing do could allow DMA to corrupt kernel memory during the
* reboot before the driver initializes.
*/
shutdownhook_establish(ntwoc_isa_shutdown, sc);
#if __NetBSD_Version__ >= 104160000
/*
* defer getting the base clock until interrupts are enabled
* (and thus we have microtime())
*/
config_interrupts(self, ntwoc_isa_config_interrupts);
#else
/* no callback pre 1.4-mumble */
sca->sc_baseclock = SCA_BASECLOCK;
sca_print_clock_info(&sc->sc_sca);
#endif
}
/*
* extract the clock information for a port from the flags field
*/
static void
ntwoc_isa_get_clock(struct sca_port *scp, u_int8_t flags, u_int8_t tmc,
u_int8_t rdiv, u_int8_t tdiv)
{
scp->sp_eclock =
(flags & NTWOC_FLAGS_ECLOCK_MASK) >> NTWOC_FLAGS_ECLOCK_SHIFT;
scp->sp_rxs = rdiv;
scp->sp_txs = tdiv;
scp->sp_tmc = tmc;
/* get rx source */
switch ((flags & NTWOC_FLAGS_RXS_MASK) >> NTWOC_FLAGS_RXS_SHIFT) {
case NTWOC_FLAGS_RXS_LINE:
scp->sp_rxs = 0;
break;
case NTWOC_FLAGS_RXS_LINE_SN:
scp->sp_rxs |= SCA_RXS_CLK_LINE_SN;
break;
case NTWOC_FLAGS_RXS_INTERNAL:
scp->sp_rxs |= SCA_RXS_CLK_INTERNAL;
break;
case NTWOC_FLAGS_RXS_ADPLL_OUT:
scp->sp_rxs |= SCA_RXS_CLK_ADPLL_OUT;
break;
case NTWOC_FLAGS_RXS_ADPLL_IN:
scp->sp_rxs |= SCA_RXS_CLK_ADPLL_IN;
break;
default:
panic("bad rx source in flags");
}
/* get tx source */
switch ((flags & NTWOC_FLAGS_TXS_MASK) >> NTWOC_FLAGS_TXS_SHIFT) {
case NTWOC_FLAGS_TXS_LINE:
scp->sp_txs = 0;
break;
case NTWOC_FLAGS_TXS_INTERNAL:
scp->sp_txs |= SCA_TXS_CLK_INTERNAL;
break;
case NTWOC_FLAGS_TXS_RXCLOCK:
scp->sp_txs |= SCA_TXS_CLK_RXCLK;
break;
default:
panic("bad rx source in flags");
}
}
static int
ntwoc_isa_intr(void *arg)
{
struct ntwoc_isa_softc *sc = (struct ntwoc_isa_softc *)arg;
return sca_hardintr(&sc->sc_sca);
}
/*
* shut down interrupts and DMA, so we don't trash the kernel on warm
* boot. Also, lower DTR on each port and disable card interrupts.
*/
static void
ntwoc_isa_shutdown(void *aux)
{
struct ntwoc_isa_softc *sc = aux;
u_int16_t mcr;
/*
* shut down the SCA ports
*/
sca_shutdown(&sc->sc_sca);
/*
* lower DTR on both ports
*/
mcr = bus_space_read_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR);
mcr |= (NTWOC_MCR_DTR0 | NTWOC_MCR_DTR1);
bus_space_write_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR, mcr);
}
static void
ntwoc_isa_dtr_callback(void *aux, int port, int state)
{
struct ntwoc_isa_softc *sc = aux;
u_int8_t mcr;
mcr = bus_space_read_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR);
NTWO_DPRINTF(("port == %d, state == %d, old mcr: 0x%02x\n",
port, state, mcr));
if (port == 0) {
if (state == 0)
mcr |= NTWOC_MCR_DTR0;
else
mcr &= ~NTWOC_MCR_DTR0;
} else {
if (state == 0)
mcr |= NTWOC_MCR_DTR1;
else
mcr &= ~NTWOC_MCR_DTR1;
}
NTWO_DPRINTF(("new mcr: 0x%02x\n", mcr));
bus_space_write_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR, mcr);
}
static void
ntwoc_isa_clock_callback(void *aux, int port, int enable)
{
struct ntwoc_isa_softc *sc = aux;
u_int8_t mcr;
mcr = bus_space_read_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR);
NTWO_DPRINTF(("clock: port == %d, enable == %d, old mcr: 0x%02x\n",
port, enable, mcr));
if (port == 0) {
if (enable == 0)
mcr &= ~NTWOC_MCR_ETC0;
else
mcr |= NTWOC_MCR_ETC0;
} else {
if (enable == 0)
mcr &= ~NTWOC_MCR_ETC1;
else
mcr |= NTWOC_MCR_ETC1;
}
NTWO_DPRINTF(("clock: new mcr: 0x%02x\n", mcr));
bus_space_write_1(sc->sc_sca.sc_iot, sc->sc_sca.sc_ioh, NTWOC_MCR, mcr);
}
static void
ntwoc_isa_setup_memory(struct sca_softc *sc)
{
struct sca_port *scp;
u_int i, j;
/* allocate enough descriptors for a full page */
sc->sc_ports[0].sp_ntxdesc = (sc->scu_pagesize / SCA_BSIZE) - 1;
sc->sc_ports[0].sp_nrxdesc = (sc->scu_pagesize / SCA_BSIZE) - 1;
if (sc->sc_numports == 2) {
sc->sc_ports[1].sp_ntxdesc = sc->sc_ports[0].sp_ntxdesc;
sc->sc_ports[1].sp_nrxdesc = sc->sc_ports[0].sp_nrxdesc;
}
j = 0;
for (i = 0; i < sc->sc_numports; i++) {
scp = &sc->sc_ports[i];
scp->sp_txdesc_p = (bus_addr_t)(j * sc->scu_pagesize);
scp->sp_txdesc = (void *)scp->sp_txdesc_p;
scp->sp_txbuf_p = scp->sp_txdesc_p;
scp->sp_txbuf_p += SCA_BSIZE;
scp->sp_txbuf = (void *)scp->sp_txbuf_p;
j++;
scp->sp_rxdesc_p = (bus_addr_t)(j * sc->scu_pagesize);
scp->sp_rxdesc = (void *)scp->sp_txdesc_p;
scp->sp_rxbuf_p = scp->sp_rxdesc_p;
scp->sp_rxbuf_p += SCA_BSIZE;
scp->sp_rxbuf = (void *)scp->sp_rxbuf_p;
j++;
}
}
#if __NetBSD_Version__ >= 104160000
/*
* get the base clock frequency
*/
static void
ntwoc_isa_config_interrupts(self)
struct device *self;
{
struct ntwoc_isa_softc *sc;
sc = (void *)self;
sca_get_base_clock(&sc->sc_sca);
sca_print_clock_info(&sc->sc_sca);
}
#endif
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