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NetBSD/sys/dev/pci/pciide.c

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/* $NetBSD: pciide.c,v 1.14 1998/11/09 09:21:09 bouyer Exp $ */
/*
* Copyright (c) 1996, 1998 Christopher G. Demetriou. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. 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.
*/
/*
* PCI IDE controller driver.
*
* Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD
* sys/dev/pci/ppb.c, revision 1.16).
*
* See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and
* "Programming Interface for Bus Master IDE Controller, Revision 1.0
* 5/16/94" from the PCI SIG.
*
*/
#define DEBUG_DMA 0x01
#define DEBUG_XFERS 0x02
#define DEBUG_FUNCS 0x08
#define DEBUG_PROBE 0x10
#ifdef WDCDEBUG
int wdcdebug_pciide_mask = DEBUG_PROBE;
#define WDCDEBUG_PRINT(args, level) \
if (wdcdebug_pciide_mask & (level)) printf args
#else
#define WDCDEBUG_PRINT(args, level)
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_kern.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pciidereg.h>
#include <dev/pci/pciidevar.h>
#include <dev/pci/pciide_piix_reg.h>
#include <dev/pci/pciide_apollo_reg.h>
#include <dev/pci/pciide_cmd_reg.h>
#include <dev/ata/atavar.h>
#include <dev/ic/wdcreg.h>
#include <dev/ic/wdcvar.h>
/* inlines for reading/writing 8-bit PCI registers */
static __inline u_int8_t pciide_pci_read __P((pci_chipset_tag_t, pcitag_t,
int));
static __inline u_int8_t
pciide_pci_read(pc, pa, reg)
pci_chipset_tag_t pc;
pcitag_t pa;
int reg;
{
return ((pci_conf_read(pc, pa, (reg & ~0x03)) >> (reg & 0x03)) & 0xff);
}
static __inline void pciide_pci_write __P((pci_chipset_tag_t, pcitag_t,
int, u_int8_t));
static __inline void
pciide_pci_write(pc, pa, reg, val)
pci_chipset_tag_t pc;
pcitag_t pa;
int reg;
u_int8_t val;
{
pcireg_t pcival;
pcival = pci_conf_read(pc, pa, (reg & ~0x03));
pcival &= ~(0xff << (reg & 0x03));
pcival |= (val << (reg & 0x03));
pci_conf_write(pc, pa, (reg & ~0x03), pcival);
}
struct pciide_softc {
struct wdc_softc sc_wdcdev; /* common wdc definitions */
void *sc_pci_ih; /* PCI interrupt handle */
int sc_dma_ok; /* bus-master DMA info */
bus_space_tag_t sc_dma_iot;
bus_space_handle_t sc_dma_ioh;
bus_dma_tag_t sc_dmat;
/* Chip description */
const struct pciide_product_desc *sc_pp;
/* common definitions */
struct channel_softc wdc_channels[PCIIDE_NUM_CHANNELS];
/* internal bookkeeping */
struct pciide_channel { /* per-channel data */
int hw_ok; /* hardware mapped & OK? */
int compat; /* is it compat? */
void *ih; /* compat or pci handle */
/* DMA tables and DMA map for xfer, for each drive */
struct pciide_dma_maps {
bus_dmamap_t dmamap_table;
struct idedma_table *dma_table;
bus_dmamap_t dmamap_xfer;
} dma_maps[2];
} pciide_channels[PCIIDE_NUM_CHANNELS];
};
void default_setup_cap __P((struct pciide_softc*));
void default_setup_chip __P((struct pciide_softc*,
pci_chipset_tag_t, pcitag_t));
const char *default_channel_probe __P((struct pciide_softc *,
struct pci_attach_args *, int));
int default_channel_disable __P((struct pciide_softc *,
struct pci_attach_args *, int));
void piix_setup_cap __P((struct pciide_softc*));
void piix_setup_chip __P((struct pciide_softc*,
pci_chipset_tag_t, pcitag_t));
void piix3_4_setup_chip __P((struct pciide_softc*,
pci_chipset_tag_t, pcitag_t));
const char *piix_channel_probe __P((struct pciide_softc *,
struct pci_attach_args *, int));
int piix_channel_disable __P((struct pciide_softc *,
struct pci_attach_args *, int));
static u_int32_t piix_setup_idetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
static u_int32_t piix_setup_idetim_drvs __P((struct ata_drive_datas*));
static u_int32_t piix_setup_sidetim_timings __P((u_int8_t, u_int8_t, u_int8_t));
void apollo_setup_cap __P((struct pciide_softc*));
void apollo_setup_chip __P((struct pciide_softc*,
pci_chipset_tag_t, pcitag_t));
const char *apollo_channel_probe __P((struct pciide_softc *,
struct pci_attach_args *, int));
int apollo_channel_disable __P((struct pciide_softc *,
struct pci_attach_args *, int));
void cmd0643_6_setup_cap __P((struct pciide_softc*));
void cmd0643_6_setup_chip __P((struct pciide_softc*,
pci_chipset_tag_t, pcitag_t));
const char *cmd_channel_probe __P((struct pciide_softc *,
struct pci_attach_args *, int));
int cmd_channel_disable __P((struct pciide_softc *,
struct pci_attach_args *, int));
int pciide_dma_table_setup __P((struct pciide_softc*, int, int));
int pciide_dma_init __P((void*, int, int, void *, size_t, int));
void pciide_dma_start __P((void*, int, int, int));
int pciide_dma_finish __P((void*, int, int, int));
struct pciide_product_desc {
u_int32_t ide_product;
int ide_flags;
const char *ide_name;
/* init controller's capabilities for drives probe */
void (*setup_cap) __P((struct pciide_softc*));
/* init controller after drives probe */
void (*setup_chip) __P((struct pciide_softc*, pci_chipset_tag_t, pcitag_t));
/* Probe for compat channel enabled/disabled */
const char * (*channel_probe) __P((struct pciide_softc *,
struct pci_attach_args *, int));
int (*channel_disable) __P((struct pciide_softc *,
struct pci_attach_args *, int));
};
/* Flags for ide_flags */
#define CMD_PCI064x_IOEN 0x01 /* CMD-style PCI_COMMAND_IO_ENABLE */
#define ONE_QUEUE 0x02 /* device need serialised access */
/* Default product description for devices not known from this controller */
const struct pciide_product_desc default_product_desc = {
0,
0,
"Generic PCI IDE controller",
default_setup_cap,
default_setup_chip,
default_channel_probe,
default_channel_disable
};
const struct pciide_product_desc pciide_intel_products[] = {
{ PCI_PRODUCT_INTEL_82092AA,
0,
"Intel 82092AA IDE controller",
default_setup_cap,
default_setup_chip,
default_channel_probe,
default_channel_disable
},
{ PCI_PRODUCT_INTEL_82371FB_IDE,
0,
"Intel 82371FB IDE controller (PIIX)",
piix_setup_cap,
piix_setup_chip,
piix_channel_probe,
piix_channel_disable
},
{ PCI_PRODUCT_INTEL_82371SB_IDE,
0,
"Intel 82371SB IDE Interface (PIIX3)",
piix_setup_cap,
piix3_4_setup_chip,
piix_channel_probe,
piix_channel_disable
},
{ PCI_PRODUCT_INTEL_82371AB_IDE,
0,
"Intel 82371AB IDE controller (PIIX4)",
piix_setup_cap,
piix3_4_setup_chip,
piix_channel_probe,
piix_channel_disable
},
{ 0,
0,
NULL,
}
};
const struct pciide_product_desc pciide_cmd_products[] = {
{ PCI_PRODUCT_CMDTECH_640,
ONE_QUEUE | CMD_PCI064x_IOEN,
"CMD Technology PCI0640",
default_setup_cap,
default_setup_chip,
cmd_channel_probe,
cmd_channel_disable
},
{ PCI_PRODUCT_CMDTECH_643,
ONE_QUEUE | CMD_PCI064x_IOEN,
"CMD Technology PCI0643",
cmd0643_6_setup_cap,
cmd0643_6_setup_chip,
cmd_channel_probe,
cmd_channel_disable
},
{ PCI_PRODUCT_CMDTECH_646,
ONE_QUEUE | CMD_PCI064x_IOEN,
"CMD Technology PCI0646",
cmd0643_6_setup_cap,
cmd0643_6_setup_chip,
cmd_channel_probe,
cmd_channel_disable
},
{ 0,
0,
NULL,
}
};
const struct pciide_product_desc pciide_via_products[] = {
{ PCI_PRODUCT_VIATECH_VT82C586_IDE,
0,
"VIA Technologies VT82C586 (Apollo VP) IDE Controller",
apollo_setup_cap,
apollo_setup_chip,
apollo_channel_probe,
apollo_channel_disable
},
{ PCI_PRODUCT_VIATECH_VT82C586A_IDE,
0,
"VIA Technologies VT82C586A IDE Controller",
apollo_setup_cap,
apollo_setup_chip,
apollo_channel_probe,
apollo_channel_disable
},
{ 0,
0,
NULL,
}
};
struct pciide_vendor_desc {
u_int32_t ide_vendor;
const struct pciide_product_desc *ide_products;
};
const struct pciide_vendor_desc pciide_vendors[] = {
{ PCI_VENDOR_INTEL, pciide_intel_products },
{ PCI_VENDOR_CMDTECH, pciide_cmd_products },
{ PCI_VENDOR_VIATECH, pciide_via_products },
{ 0, NULL }
};
#define PCIIDE_CHANNEL_NAME(chan) ((chan) == 0 ? "primary" : "secondary")
/* options passed via the 'flags' config keyword */
#define PCIIDE_OPTIONS_DMA 0x01
int pciide_match __P((struct device *, struct cfdata *, void *));
void pciide_attach __P((struct device *, struct device *, void *));
struct cfattach pciide_ca = {
sizeof(struct pciide_softc), pciide_match, pciide_attach
};
int pciide_map_channel_compat __P((struct pciide_softc *,
struct pci_attach_args *, int));
int pciide_map_channel_native __P((struct pciide_softc *,
struct pci_attach_args *, int));
int pciide_print __P((void *, const char *pnp));
int pciide_compat_intr __P((void *));
int pciide_pci_intr __P((void *));
const struct pciide_product_desc* pciide_lookup_product __P((u_int32_t));
const struct pciide_product_desc*
pciide_lookup_product(id)
u_int32_t id;
{
const struct pciide_product_desc *pp;
const struct pciide_vendor_desc *vp;
for (vp = pciide_vendors; vp->ide_products != NULL; vp++)
if (PCI_VENDOR(id) == vp->ide_vendor)
break;
if ((pp = vp->ide_products) == NULL)
return NULL;
for (; pp->ide_name != NULL; pp++)
if (PCI_PRODUCT(id) == pp->ide_product)
break;
if (pp->ide_name == NULL)
return NULL;
return pp;
}
int
pciide_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
/*
* Check the ID register to see that it's a PCI IDE controller.
* If it is, we assume that we can deal with it; it _should_
* work in a standardized way...
*/
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
return (1);
}
return (0);
}
void
pciide_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pci_attach_args *pa = aux;
pci_chipset_tag_t pc = pa->pa_pc;
pcitag_t tag = pa->pa_tag;
struct pciide_softc *sc = (struct pciide_softc *)self;
struct pciide_channel *cp;
pcireg_t class, interface, csr;
pci_intr_handle_t intrhandle;
const char *intrstr;
char devinfo[256];
int i;
sc->sc_pp = pciide_lookup_product(pa->pa_id);
if (sc->sc_pp == NULL) {
sc->sc_pp = &default_product_desc;
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf(": %s (rev. 0x%02x)\n", devinfo,
PCI_REVISION(pa->pa_class));
} else {
printf(": %s\n", sc->sc_pp->ide_name);
}
if ((pa->pa_flags & PCI_FLAGS_IO_ENABLED) == 0) {
csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
/*
* For a CMD PCI064x, the use of PCI_COMMAND_IO_ENABLE
* and base adresses registers can be disabled at
* hardware level. In this case, the device is wired
* in compat mode and its first channel is always enabled,
* but we can't rely on PCI_COMMAND_IO_ENABLE.
* In fact, it seems that the first channel of the CMD PCI0640
* can't be disabled.
*/
#ifndef PCIIDE_CMD064x_DISABLE
if ((sc->sc_pp->ide_flags & CMD_PCI064x_IOEN) == 0) {
#else
if (1) {
#endif
printf("%s: device disabled (at %s)\n",
sc->sc_wdcdev.sc_dev.dv_xname,
(csr & PCI_COMMAND_IO_ENABLE) == 0 ?
"device" : "bridge");
return;
}
}
class = pci_conf_read(pc, tag, PCI_CLASS_REG);
interface = PCI_INTERFACE(class);
/*
* Set up PCI interrupt only if at last one channel is in native mode.
* At last one device (CMD PCI0640) has a default value of 14, which
* will be mapped even if both channels are in compat-only mode.
*/
if (interface & (PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1))) {
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &intrhandle) != 0) {
printf("%s: couldn't map native-PCI interrupt\n",
sc->sc_wdcdev.sc_dev.dv_xname);
} else {
intrstr = pci_intr_string(pa->pa_pc, intrhandle);
sc->sc_pci_ih = pci_intr_establish(pa->pa_pc,
intrhandle, IPL_BIO, pciide_pci_intr, sc);
if (sc->sc_pci_ih != NULL) {
printf("%s: using %s for native-PCI "
"interrupt\n",
sc->sc_wdcdev.sc_dev.dv_xname,
intrstr ? intrstr : "unknown interrupt");
} else {
printf("%s: couldn't establish native-PCI "
"interrupt",
sc->sc_wdcdev.sc_dev.dv_xname);
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
}
}
}
/*
* Map DMA registers, if DMA is supported.
*
* Note that sc_dma_ok is the right variable to test to see if
* DMA can be done. If the interface doesn't support DMA,
* sc_dma_ok will never be non-zero. If the DMA regs couldn't
* be mapped, it'll be zero. I.e., sc_dma_ok will only be
* non-zero if the interface supports DMA and the registers
* could be mapped.
*
* XXX Note that despite the fact that the Bus Master IDE specs
* XXX say that "The bus master IDE functoin uses 16 bytes of IO
* XXX space," some controllers (at least the United
* XXX Microelectronics UM8886BF) place it in memory space.
* XXX eventually, we should probably read the register and check
* XXX which type it is. Either that or 'quirk' certain devices.
*/
if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
printf("%s: bus-master DMA support present",
sc->sc_wdcdev.sc_dev.dv_xname);
if (sc->sc_pp == &default_product_desc &&
(sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags &
PCIIDE_OPTIONS_DMA) == 0) {
printf(", but unused (no driver support)");
sc->sc_dma_ok = 0;
} else {
sc->sc_dma_ok = (pci_mapreg_map(pa,
PCIIDE_REG_BUS_MASTER_DMA, PCI_MAPREG_TYPE_IO, 0,
&sc->sc_dma_iot, &sc->sc_dma_ioh, NULL, NULL) == 0);
sc->sc_dmat = pa->pa_dmat;
if (sc->sc_dma_ok == 0) {
printf(", but unused (couldn't map registers)");
} else {
if (sc->sc_pp == &default_product_desc)
printf(", used without full driver "
"support");
sc->sc_wdcdev.dma_arg = sc;
sc->sc_wdcdev.dma_init = pciide_dma_init;
sc->sc_wdcdev.dma_start = pciide_dma_start;
sc->sc_wdcdev.dma_finish = pciide_dma_finish;
}
}
printf("\n");
}
sc->sc_pp->setup_cap(sc);
sc->sc_wdcdev.channels = sc->wdc_channels;
sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
for (i = 0; i < PCIIDE_NUM_CHANNELS; i++) {
cp = &sc->pciide_channels[i];
sc->wdc_channels[i].channel = i;
sc->wdc_channels[i].wdc = &sc->sc_wdcdev;
if (i > 0 && (sc->sc_pp->ide_flags & ONE_QUEUE)) {
sc->wdc_channels[i].ch_queue =
sc->wdc_channels[0].ch_queue;
} else {
sc->wdc_channels[i].ch_queue =
malloc(sizeof(struct channel_queue), M_DEVBUF,
M_NOWAIT);
}
if (sc->wdc_channels[i].ch_queue == NULL) {
printf("%s %s channel: "
"can't allocate memory for command queue",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(i));
continue;
}
printf("%s: %s channel %s to %s mode\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(i),
(interface & PCIIDE_INTERFACE_SETTABLE(i)) ?
"configured" : "wired",
(interface & PCIIDE_INTERFACE_PCI(i)) ? "native-PCI" :
"compatibility");
/*
* pciide_map_channel_native() and pciide_map_channel_compat()
* will also call wdcattach. Eventually the channel will be
* disabled if there's no drive present
*/
if (interface & PCIIDE_INTERFACE_PCI(i))
cp->hw_ok = pciide_map_channel_native(sc, pa, i);
else
cp->hw_ok = pciide_map_channel_compat(sc, pa, i);
}
sc->sc_pp->setup_chip(sc, pc, tag);
WDCDEBUG_PRINT(("pciide: command/status register=%x\n",
pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG)), DEBUG_PROBE);
}
int
pciide_map_channel_compat(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
int chan;
{
struct pciide_channel *cp = &sc->pciide_channels[chan];
struct channel_softc *wdc_cp = &sc->wdc_channels[chan];
const char *probe_fail_reason;
int rv = 1;
cp->compat = 1;
wdc_cp->cmd_iot = pa->pa_iot;
if (bus_space_map(wdc_cp->cmd_iot, PCIIDE_COMPAT_CMD_BASE(chan),
PCIIDE_COMPAT_CMD_SIZE, 0, &wdc_cp->cmd_ioh) != 0) {
printf("%s: couldn't map %s channel cmd regs\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
wdc_cp->ctl_iot = pa->pa_iot;
if (bus_space_map(wdc_cp->ctl_iot, PCIIDE_COMPAT_CTL_BASE(chan),
PCIIDE_COMPAT_CTL_SIZE, 0, &wdc_cp->ctl_ioh) != 0) {
printf("%s: couldn't map %s channel ctl regs\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
/*
* If we weren't able to map the device successfully,
* we just give up now. Something else has already
* occupied those ports, indicating that the device has
* (probably) been completely disabled (by some nonstandard
* mechanism).
*
* XXX If we successfully map some ports, but not others,
* XXX it might make sense to unmap the ones that we mapped.
*/
if (rv == 0)
goto out;
/*
* If we were able to map the device successfully, check if
* the channel is enabled. For "known" device, a chip-specific
* routine will be used (which read the rigth PCI register).
* For unknow device, a generic routine using "standart" wdc probe
* will try to guess it.
*
* If the channel has been disabled, other devices are free to use
* its ports.
*/
probe_fail_reason = sc->sc_pp->channel_probe(sc, pa, chan);
if (probe_fail_reason != NULL) {
printf("%s: %s channel ignored (%s)\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan), probe_fail_reason);
rv = 0;
bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh,
PCIIDE_COMPAT_CMD_SIZE);
bus_space_unmap(wdc_cp->ctl_iot, wdc_cp->ctl_ioh,
PCIIDE_COMPAT_CTL_SIZE);
goto out;
}
wdc_cp->data32iot = wdc_cp->cmd_iot;
wdc_cp->data32ioh = wdc_cp->cmd_ioh;
wdcattach(&sc->wdc_channels[chan]);
/*
* If drive not present, try to disable the channel and
* free the resources.
*/
if ((sc->wdc_channels[chan].ch_drive[0].drive_flags & DRIVE) == 0 &&
(sc->wdc_channels[chan].ch_drive[1].drive_flags & DRIVE) == 0) {
if (sc->sc_pp->channel_disable(sc, pa, chan)) {
printf("%s: disabling %s channel (no drives)\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
bus_space_unmap(wdc_cp->cmd_iot, wdc_cp->cmd_ioh,
PCIIDE_COMPAT_CMD_SIZE);
bus_space_unmap(wdc_cp->ctl_iot, wdc_cp->ctl_ioh,
PCIIDE_COMPAT_CTL_SIZE);
rv = 0;
goto out;
}
}
/*
* If we're here, we were able to map the device successfully
* and it really looks like there's a controller there.
*
* Unless those conditions are true, we don't map the
* compatibility interrupt. The spec indicates that if a
* channel is configured for compatibility mode and the PCI
* device's I/O space is enabled, the channel will be enabled.
* Hoewver, some devices seem to be able to disable invididual
* compatibility channels (via non-standard mechanisms). If
* the channel is disabled, the interrupt line can (probably)
* be used by other devices (and may be assigned to other
* devices by the BIOS). If we mapped the interrupt we might
* conflict with another interrupt assignment.
*/
cp->ih = pciide_machdep_compat_intr_establish(&sc->sc_wdcdev.sc_dev,
pa, chan, pciide_compat_intr, wdc_cp);
if (cp->ih == NULL) {
printf("%s: no compatibility interrupt for use by %s channel\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
out:
return (rv);
}
int
pciide_map_channel_native(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
int chan;
{
struct pciide_channel *cp = &sc->pciide_channels[chan];
struct channel_softc *wdc_cp = &sc->wdc_channels[chan];
int rv = 1;
cp->compat = 0;
if (pci_mapreg_map(pa, PCIIDE_REG_CMD_BASE(chan), PCI_MAPREG_TYPE_IO,
0, &wdc_cp->cmd_iot, &wdc_cp->cmd_ioh, NULL, NULL) != 0) {
printf("%s: couldn't map %s channel cmd regs\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
if (pci_mapreg_map(pa, PCIIDE_REG_CTL_BASE(chan), PCI_MAPREG_TYPE_IO,
0, &wdc_cp->ctl_iot, &wdc_cp->ctl_ioh, NULL, NULL) != 0) {
printf("%s: couldn't map %s channel ctl regs\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
if ((cp->ih = sc->sc_pci_ih) == NULL) {
printf("%s: no native-PCI interrupt for use by %s channel\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
rv = 0;
}
wdc_cp->data32iot = wdc_cp->cmd_iot;
wdc_cp->data32ioh = wdc_cp->cmd_ioh;
if (rv) {
wdcattach(&sc->wdc_channels[chan]);
/*
* If drive not present, try to disable the channel and
* free the resources.
*/
/* XXX How do we unmap regs mapped with pci_mapreg_map ?*/
#if 0
if ((sc->wdc_channels[chan].ch_drive[0].drive_flags & DRIVE)
== 0 &&
(sc->wdc_channels[chan].ch_drive[1].drive_flags & DRIVE)
== 0) {
if (sc->sc_pp->channel_disable(sc, pa, chan)) {
printf("%s: disabling %s channel (no drives)\n",
sc->sc_wdcdev.sc_dev.dv_xname,
PCIIDE_CHANNEL_NAME(chan));
pci_mapreg_map(xxx);
rv = 0;
}
}
#endif
}
return (rv);
}
int
pciide_compat_intr(arg)
void *arg;
{
struct channel_softc *wdc_cp = arg;
#ifdef DIAGNOSTIC
struct pciide_softc *sc = (struct pciide_softc*)wdc_cp->wdc;
struct pciide_channel *cp = &sc->pciide_channels[wdc_cp->channel];
/* should only be called for a compat channel */
if (cp->compat == 0)
panic("pciide compat intr called for non-compat chan %p\n", cp);
#endif
return (wdcintr(wdc_cp));
}
int
pciide_pci_intr(arg)
void *arg;
{
struct pciide_softc *sc = arg;
struct pciide_channel *cp;
struct channel_softc *wdc_cp;
int i, rv, crv;
rv = 0;
for (i = 0; i < PCIIDE_NUM_CHANNELS; i++) {
cp = &sc->pciide_channels[i];
wdc_cp = &sc->wdc_channels[i];
/* If a compat channel skip. */
if (cp->compat)
continue;
/* if this channel not waiting for intr, skip */
if ((wdc_cp->ch_flags & WDCF_IRQ_WAIT) == 0)
continue;
crv = wdcintr(wdc_cp);
if (crv == 0)
; /* leave rv alone */
else if (crv == 1)
rv = 1; /* claim the intr */
else if (rv == 0) /* crv should be -1 in this case */
rv = crv; /* if we've done no better, take it */
}
return (rv);
}
void
default_setup_cap(sc)
struct pciide_softc *sc;
{
if (sc->sc_dma_ok)
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA;
sc->sc_wdcdev.pio_mode = 0;
sc->sc_wdcdev.dma_mode = 0;
}
void
default_setup_chip(sc, pc, tag)
struct pciide_softc *sc;
pci_chipset_tag_t pc;
pcitag_t tag;
{
int channel, drive, idedma_ctl;
struct channel_softc *chp;
struct ata_drive_datas *drvp;
if (sc->sc_dma_ok == 0)
return; /* nothing to do */
/* Allocate DMA maps */
for (channel = 0; channel < PCIIDE_NUM_CHANNELS; channel++) {
idedma_ctl = 0;
chp = &sc->wdc_channels[channel];
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
if ((drvp->drive_flags & DRIVE_DMA) == 0)
continue;
if (pciide_dma_table_setup(sc, channel, drive) != 0) {
/* Abort DMA setup */
printf("%s:%d:%d: can't allocate DMA maps, "
"using PIO transferts\n",
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive);
drvp->drive_flags &= ~DRIVE_DMA;
}
printf("%s:%d:%d: using DMA mode %d\n",
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive,
drvp->DMA_mode);
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
idedma_ctl);
}
}
}
const char *
default_channel_probe(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
{
pcireg_t csr;
const char *failreason = NULL;
/*
* Check to see if something appears to be there.
*/
if (!wdcprobe(&sc->wdc_channels[chan])) {
failreason = "not responding; disabled or no drives?";
goto out;
}
/*
* Now, make sure it's actually attributable to this PCI IDE
* channel by trying to access the channel again while the
* PCI IDE controller's I/O space is disabled. (If the
* channel no longer appears to be there, it belongs to
* this controller.) YUCK!
*/
csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
csr & ~PCI_COMMAND_IO_ENABLE);
if (wdcprobe(&sc->wdc_channels[chan]))
failreason = "other hardware responding at addresses";
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr);
out:
return (failreason);
}
int
default_channel_disable(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
{
/* don't know how to disable a channel */
return 0;
}
void
piix_setup_cap(sc)
struct pciide_softc *sc;
{
if (sc->sc_pp->ide_product == PCI_PRODUCT_INTEL_82371AB_IDE)
sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_MODE |
WDC_CAPABILITY_DMA;
sc->sc_wdcdev.pio_mode = 4;
sc->sc_wdcdev.dma_mode = 2;
}
void
piix_setup_chip(sc, pc, tag)
struct pciide_softc *sc;
pci_chipset_tag_t pc;
pcitag_t tag;
{
struct channel_softc *chp;
u_int8_t mode[2];
u_int8_t channel, drive;
u_int32_t oidetim, idetim, sidetim, idedma_ctl;
struct ata_drive_datas *drvp;
oidetim = pci_conf_read(pc, tag, PIIX_IDETIM);
idetim = sidetim = 0;
WDCDEBUG_PRINT(("piix_setup_chip: old idetim=0x%x, sidetim=0x%x\n",
oidetim,
pci_conf_read(pc, tag, PIIX_SIDETIM)), DEBUG_PROBE);
for (channel = 0; channel < PCIIDE_NUM_CHANNELS; channel++) {
chp = &sc->wdc_channels[channel];
drvp = chp->ch_drive;
idedma_ctl = 0;
/* If channel disabled, no need to go further */
if ((PIIX_IDETIM_READ(oidetim, channel) & PIIX_IDETIM_IDE) == 0)
continue;
/* set up new idetim: Enable IDE registers decode */
idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
channel);
/* setup DMA if needed */
for (drive = 0; drive < 2; drive++) {
if (drvp[drive].drive_flags & DRIVE_DMA &&
pciide_dma_table_setup(sc, channel, drive) != 0) {
drvp[drive].drive_flags &= ~DRIVE_DMA;
}
}
/*
* Here we have to mess up with drives mode: PIIX can't have
* different timings for master and slave drives.
* We need to find the best combination.
*/
/* If both drives supports DMA, takes the lower mode */
if ((drvp[0].drive_flags & DRIVE_DMA) &&
(drvp[1].drive_flags & DRIVE_DMA)) {
mode[0] = mode[1] =
min(drvp[0].DMA_mode, drvp[1].DMA_mode);
drvp[0].DMA_mode = mode[0];
goto ok;
}
/*
* If only one drive supports DMA, use its mode, and
* put the other one in PIO mode 0 if mode not compatible
*/
if (drvp[0].drive_flags & DRIVE_DMA) {
mode[0] = drvp[0].DMA_mode;
mode[1] = drvp[1].PIO_mode;
if (piix_isp_pio[mode[1]] != piix_isp_dma[mode[0]] ||
piix_rtc_pio[mode[1]] != piix_rtc_dma[mode[0]])
mode[1] = 0;
goto ok;
}
if (drvp[1].drive_flags & DRIVE_DMA) {
mode[1] = drvp[1].DMA_mode;
mode[0] = drvp[0].PIO_mode;
if (piix_isp_pio[mode[0]] != piix_isp_dma[mode[1]] ||
piix_rtc_pio[mode[0]] != piix_rtc_dma[mode[1]])
mode[0] = 0;
goto ok;
}
/*
* If both drives are not DMA, takes the lower mode, unless
* one of them is PIO mode < 2
*/
if (drvp[0].PIO_mode < 2) {
mode[0] = 0;
mode[1] = drvp[1].PIO_mode;
} else if (drvp[1].PIO_mode < 2) {
mode[1] = 0;
mode[0] = drvp[0].PIO_mode;
} else {
mode[0] = mode[1] =
min(drvp[1].PIO_mode, drvp[0].PIO_mode);
}
ok: /* The modes are setup */
for (drive = 0; drive < 2; drive++) {
if (drvp[drive].drive_flags & DRIVE_DMA) {
drvp[drive].DMA_mode = mode[drive];
idetim |= piix_setup_idetim_timings(
mode[drive], 1, channel);
goto end;
} else
drvp[drive].PIO_mode = mode[drive];
}
/* If we are there, none of the drives are DMA */
if (mode[0] >= 2)
idetim |= piix_setup_idetim_timings(
mode[0], 0, channel);
else
idetim |= piix_setup_idetim_timings(
mode[1], 0, channel);
end: /*
* timing mode is now set up in the controller. Enable
* it per-drive
*/
for (drive = 0; drive < 2; drive++) {
/* If no drive, skip */
if ((drvp[drive].drive_flags & DRIVE) == 0)
continue;
idetim |= piix_setup_idetim_drvs(&drvp[drive]);
printf("%s(%s:%d:%d): using PIO mode %d",
drvp[drive].drv_softc->dv_xname,
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, drvp[drive].PIO_mode);
if (drvp[drive].drive_flags & DRIVE_DMA) {
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
printf(", DMA mode %d", drvp[drive].DMA_mode);
}
printf("\n");
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
idedma_ctl);
}
}
WDCDEBUG_PRINT(("piix_setup_chip: idetim=0x%x, sidetim=0x%x\n",
idetim, sidetim), DEBUG_PROBE);
pci_conf_write(pc, tag, PIIX_IDETIM, idetim);
pci_conf_write(pc, tag, PIIX_SIDETIM, sidetim);
}
void
piix3_4_setup_chip(sc, pc, tag)
struct pciide_softc *sc;
pci_chipset_tag_t pc;
pcitag_t tag;
{
int channel, drive;
struct channel_softc *chp;
struct ata_drive_datas *drvp;
u_int32_t oidetim, idetim, sidetim, udmareg, idedma_ctl;
idetim = sidetim = udmareg = 0;
oidetim = pci_conf_read(pc, tag, PIIX_IDETIM);
WDCDEBUG_PRINT(("piix3_4_setup_chip: old idetim=0x%x, sidetim=0x%x",
oidetim,
pci_conf_read(pc, tag, PIIX_SIDETIM)), DEBUG_PROBE);
if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
WDCDEBUG_PRINT((", udamreg 0x%x",
pci_conf_read(pc, tag, PIIX_UDMAREG)),
DEBUG_PROBE);
}
WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
for (channel = 0; channel < PCIIDE_NUM_CHANNELS; channel++) {
chp = &sc->wdc_channels[channel];
idedma_ctl = 0;
/* If channel disabled, no need to go further */
if ((PIIX_IDETIM_READ(oidetim, channel) & PIIX_IDETIM_IDE) == 0)
continue;
/* set up new idetim: Enable IDE registers decode */
idetim = PIIX_IDETIM_SET(idetim, PIIX_IDETIM_IDE,
channel);
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
/* add timing values, setup DMA if needed */
if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
(drvp->drive_flags & DRIVE_UDMA) == 0) ||
sc->sc_dma_ok == 0) {
drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
goto pio;
}
if (pciide_dma_table_setup(sc, channel, drive) != 0) {
/* Abort DMA setup */
drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
goto pio;
}
if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
(drvp->drive_flags & DRIVE_UDMA)) {
/* use Ultra/DMA */
drvp->drive_flags &= ~DRIVE_DMA;
udmareg |= PIIX_UDMACTL_DRV_EN(
channel, drive);
udmareg |= PIIX_UDMATIM_SET(
piix4_sct_udma[drvp->UDMA_mode],
channel, drive);
} else {
/* use Multiword DMA */
drvp->drive_flags &= ~DRIVE_UDMA;
if (drive == 0) {
idetim |= piix_setup_idetim_timings(
drvp->DMA_mode, 1, channel);
} else {
sidetim |= piix_setup_sidetim_timings(
drvp->DMA_mode, 1, channel);
idetim =PIIX_IDETIM_SET(idetim,
PIIX_IDETIM_SITRE, channel);
}
}
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
pio: /* use PIO mode */
idetim |= piix_setup_idetim_drvs(drvp);
if (drive == 0) {
idetim |= piix_setup_idetim_timings(
drvp->PIO_mode, 0, channel);
} else {
sidetim |= piix_setup_sidetim_timings(
drvp->PIO_mode, 0, channel);
idetim =PIIX_IDETIM_SET(idetim,
PIIX_IDETIM_SITRE, channel);
}
printf("%s(%s:%d:%d): using PIO mode %d",
drvp->drv_softc->dv_xname,
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, drvp->PIO_mode);
if (drvp->drive_flags & DRIVE_DMA)
printf(", DMA mode %d", drvp->DMA_mode);
if (drvp->drive_flags & DRIVE_UDMA)
printf(", UDMA mode %d", drvp->UDMA_mode);
printf("\n");
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
idedma_ctl);
}
}
WDCDEBUG_PRINT(("piix3_4_setup_chip: idetim=0x%x, sidetim=0x%x",
idetim, sidetim), DEBUG_PROBE);
if (sc->sc_wdcdev.cap & WDC_CAPABILITY_UDMA) {
WDCDEBUG_PRINT((", udmareg=0x%x", udmareg), DEBUG_PROBE);
pci_conf_write(pc, tag, PIIX_UDMAREG, udmareg);
}
WDCDEBUG_PRINT(("\n"), DEBUG_PROBE);
pci_conf_write(pc, tag, PIIX_IDETIM, idetim);
pci_conf_write(pc, tag, PIIX_SIDETIM, sidetim);
}
/* setup ISP and RTC fields, based on mode */
static u_int32_t
piix_setup_idetim_timings(mode, dma, channel)
u_int8_t mode;
u_int8_t dma;
u_int8_t channel;
{
if (dma)
return PIIX_IDETIM_SET(0,
PIIX_IDETIM_ISP_SET(piix_isp_dma[mode]) |
PIIX_IDETIM_RTC_SET(piix_rtc_dma[mode]),
channel);
else
return PIIX_IDETIM_SET(0,
PIIX_IDETIM_ISP_SET(piix_isp_pio[mode]) |
PIIX_IDETIM_RTC_SET(piix_rtc_pio[mode]),
channel);
}
/* setup DTE, PPE, IE and TIME field based on PIO mode */
static u_int32_t
piix_setup_idetim_drvs(drvp)
struct ata_drive_datas *drvp;
{
u_int32_t ret = 0;
struct channel_softc *chp = drvp->chnl_softc;
u_int8_t channel = chp->channel;
u_int8_t drive = drvp->drive;
/*
* If drive is using UDMA, timings setups are independant
* So just check DMA and PIO here.
*/
if (drvp->drive_flags & DRIVE_DMA) {
/* if mode = DMA mode 0, use compatible timings */
if ((drvp->drive_flags & DRIVE_DMA) &&
drvp->DMA_mode == 0) {
drvp->PIO_mode = 0;
return ret;
}
ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
/*
* PIO and DMA timings are the same, use fast timings for PIO
* too, else use compat timings.
*/
if ((piix_isp_pio[drvp->PIO_mode] !=
piix_isp_dma[drvp->DMA_mode]) ||
(piix_rtc_pio[drvp->PIO_mode] !=
piix_rtc_dma[drvp->DMA_mode]))
drvp->PIO_mode = 0;
/* if PIO mode <= 2, use compat timings for PIO */
if (drvp->PIO_mode <= 2) {
ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_DTE(drive),
channel);
return ret;
}
}
/*
* Now setup PIO modes. If mode < 2, use compat timings.
* Else enable fast timings. Enable IORDY and prefetch/post
* if PIO mode >= 3.
*/
if (drvp->PIO_mode < 2)
return ret;
ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_TIME(drive), channel);
if (drvp->PIO_mode >= 3) {
ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_IE(drive), channel);
ret = PIIX_IDETIM_SET(ret, PIIX_IDETIM_PPE(drive), channel);
}
return ret;
}
/* setup values in SIDETIM registers, based on mode */
static u_int32_t
piix_setup_sidetim_timings(mode, dma, channel)
u_int8_t mode;
u_int8_t dma;
u_int8_t channel;
{
if (dma)
return PIIX_SIDETIM_ISP_SET(piix_isp_dma[mode], channel) |
PIIX_SIDETIM_RTC_SET(piix_rtc_dma[mode], channel);
else
return PIIX_SIDETIM_ISP_SET(piix_isp_pio[mode], channel) |
PIIX_SIDETIM_RTC_SET(piix_rtc_pio[mode], channel);
}
const char*
piix_channel_probe(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
int chan;
{
u_int32_t idetim = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_IDETIM);
if (PIIX_IDETIM_READ(idetim, chan) & PIIX_IDETIM_IDE)
return NULL;
else
return "disabled";
}
int
piix_channel_disable(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
{
u_int32_t idetim = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_IDETIM);
idetim = PIIX_IDETIM_CLEAR(idetim, PIIX_IDETIM_IDE, chan);
pci_conf_write(pa->pa_pc, pa->pa_tag, PIIX_IDETIM, idetim);
return 1;
}
void
apollo_setup_cap(sc)
struct pciide_softc *sc;
{
if (sc->sc_pp->ide_product == PCI_PRODUCT_VIATECH_VT82C586A_IDE)
sc->sc_wdcdev.cap |= WDC_CAPABILITY_UDMA;
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_MODE |
WDC_CAPABILITY_DMA;
sc->sc_wdcdev.pio_mode = 4;
sc->sc_wdcdev.dma_mode = 2;
}
void
apollo_setup_chip(sc, pc, tag)
struct pciide_softc *sc;
pci_chipset_tag_t pc;
pcitag_t tag;
{
u_int32_t udmatim_reg, datatim_reg;
u_int8_t idedma_ctl;
int mode;
int channel, drive;
struct channel_softc *chp;
struct ata_drive_datas *drvp;
WDCDEBUG_PRINT(("apollo_setup_chip: old APO_IDECONF=0x%x, "
"APO_CTLMISC=0x%x, APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
pci_conf_read(pc, tag, APO_IDECONF),
pci_conf_read(pc, tag, APO_CTLMISC),
pci_conf_read(pc, tag, APO_DATATIM),
pci_conf_read(pc, tag, APO_UDMA)),
DEBUG_PROBE);
datatim_reg = 0;
udmatim_reg = 0;
for (channel = 0; channel < PCIIDE_NUM_CHANNELS; channel++) {
chp = &sc->wdc_channels[channel];
idedma_ctl = 0;
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
/* add timing values, setup DMA if needed */
if (((drvp->drive_flags & DRIVE_DMA) == 0 &&
(drvp->drive_flags & DRIVE_UDMA) == 0) ||
sc->sc_dma_ok == 0) {
drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
mode = drvp->PIO_mode;
goto pio;
}
if (pciide_dma_table_setup(sc, channel, drive) != 0) {
/* Abort DMA setup */
drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA);
mode = drvp->PIO_mode;
goto pio;
}
if ((chp->wdc->cap & WDC_CAPABILITY_UDMA) &&
(drvp->drive_flags & DRIVE_UDMA)) {
/* use Ultra/DMA */
drvp->drive_flags &= ~DRIVE_DMA;
udmatim_reg |= APO_UDMA_EN(channel, drive) |
APO_UDMA_EN_MTH(channel, drive) |
APO_UDMA_TIME(channel, drive,
apollo_udma_tim[drvp->UDMA_mode]);
/* can use PIO timings, MW DMA unused */
mode = drvp->PIO_mode;
} else {
/* use Multiword DMA */
drvp->drive_flags &= ~DRIVE_UDMA;
/* mode = min(pio, dma+2) */
if (drvp->PIO_mode <= (drvp->DMA_mode +2))
mode = drvp->PIO_mode;
else
mode = drvp->DMA_mode;
}
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
pio: /* setup PIO mode */
datatim_reg |=
APO_DATATIM_PULSE(channel, drive,
apollo_pio_set[mode]) |
APO_DATATIM_RECOV(channel, drive,
apollo_pio_rec[mode]);
drvp->PIO_mode = mode;
drvp->DMA_mode = mode - 2;
printf("%s(%s:%d:%d): using PIO mode %d",
drvp->drv_softc->dv_xname,
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, drvp->PIO_mode);
if (drvp[drive].drive_flags & DRIVE_DMA)
printf(", DMA mode %d", drvp->DMA_mode);
if (drvp->drive_flags & DRIVE_UDMA)
printf(", UDMA mode %d", drvp->UDMA_mode);
printf("\n");
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
idedma_ctl);
}
}
WDCDEBUG_PRINT(("apollo_setup_chip: APO_DATATIM=0x%x, APO_UDMA=0x%x\n",
datatim_reg, udmatim_reg), DEBUG_PROBE);
pci_conf_write(pc, tag, APO_DATATIM, datatim_reg);
pci_conf_write(pc, tag, APO_UDMA, udmatim_reg);
}
const char*
apollo_channel_probe(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
int chan;
{
u_int32_t ideconf = pci_conf_read(pa->pa_pc, pa->pa_tag, APO_IDECONF);
if (ideconf & APO_IDECONF_EN(chan))
return NULL;
else
return "disabled";
}
int
apollo_channel_disable(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
{
u_int32_t ideconf = pci_conf_read(pa->pa_pc, pa->pa_tag, APO_IDECONF);
ideconf &= ~APO_IDECONF_EN(chan);
pci_conf_write(pa->pa_pc, pa->pa_tag, APO_IDECONF, ideconf);
return 1;
}
const char*
cmd_channel_probe(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
int chan;
{
/*
* with a CMD PCI64x, if we get here, the first channel is enabled:
* there's no way to disable the first channel without disabling
* the whole device
*/
if (chan == 0)
return NULL;
/* Second channel is enabled if CMD_CTRL_2PORT is set */
if ((pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CTRL) &
CMD_CTRL_2PORT) == 0)
return "disabled";
return NULL;
}
int
cmd_channel_disable(sc, pa, chan)
struct pciide_softc *sc;
struct pci_attach_args *pa;
{
u_int8_t ctrl;
/* with a CMD PCI64x, the first channel is always enabled */
if (chan == 0)
return 0;
ctrl = pciide_pci_read(pa->pa_pc, pa->pa_tag, CMD_CTRL);
ctrl &= ~CMD_CTRL_2PORT;
pciide_pci_write(pa->pa_pc, pa->pa_tag, CMD_CTRL_2PORT, ctrl);
return 1;
}
void
cmd0643_6_setup_cap(sc)
struct pciide_softc *sc;
{
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32 | WDC_CAPABILITY_MODE |
WDC_CAPABILITY_DMA;
sc->sc_wdcdev.pio_mode = 4;
sc->sc_wdcdev.dma_mode = 2;
}
void
cmd0643_6_setup_chip(sc, pc, tag)
struct pciide_softc *sc;
pci_chipset_tag_t pc;
pcitag_t tag;
{
struct channel_softc *chp;
struct ata_drive_datas *drvp;
int channel, drive;
u_int8_t tim;
u_int32_t idedma_ctl;
WDCDEBUG_PRINT(("cmd0643_6_setup_chip: old timings reg 0x%x 0x%x\n",
pci_conf_read(pc, tag, 0x54), pci_conf_read(pc, tag, 0x58)),
DEBUG_PROBE);
for (channel = 0; channel < PCIIDE_NUM_CHANNELS; channel++) {
chp = &sc->wdc_channels[channel];
idedma_ctl = 0;
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
/* add timing values, setup DMA if needed */
tim = cmd0643_6_data_tim_pio[drvp->PIO_mode];
if ((drvp->drive_flags & DRIVE_DMA) == 0 ||
sc->sc_dma_ok == 0) {
drvp->drive_flags &= ~DRIVE_DMA;
goto end;
}
if (pciide_dma_table_setup(sc, channel, drive) != 0) {
/* Abort DMA setup */
drvp->drive_flags &= ~DRIVE_DMA;
goto end;
}
/*
* use Multiword DMA.
* Timings will be used for both PIO and DMA, so adjust
* DMA mode if needed
*/
if (drvp->PIO_mode >= 3 &&
(drvp->DMA_mode + 2) > drvp->PIO_mode) {
drvp->DMA_mode = drvp->PIO_mode - 2;
}
tim = cmd0643_6_data_tim_dma[drvp->DMA_mode];
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
end: pciide_pci_write(pc, tag,
CMD_DATA_TIM(channel, drive), tim);
printf("%s(%s:%d:%d): using PIO mode %d",
drvp->drv_softc->dv_xname,
sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, drvp->PIO_mode);
if (drvp->drive_flags & DRIVE_DMA)
printf(", DMA mode %d", drvp->DMA_mode);
printf("\n");
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + (IDEDMA_SCH_OFFSET * channel),
idedma_ctl);
}
}
WDCDEBUG_PRINT(("cmd0643_6_setup_chip: timings reg now 0x%x 0x%x\n",
pci_conf_read(pc, tag, 0x54), pci_conf_read(pc, tag, 0x58)),
DEBUG_PROBE);
}
int
pciide_dma_table_setup(sc, channel, drive)
struct pciide_softc *sc;
int channel, drive;
{
bus_dma_segment_t seg;
int error, rseg;
const bus_size_t dma_table_size =
sizeof(struct idedma_table) * NIDEDMA_TABLES;
struct pciide_dma_maps *dma_maps =
&sc->pciide_channels[channel].dma_maps[drive];
/* Allocate memory for the DMA tables and map it */
if ((error = bus_dmamem_alloc(sc->sc_dmat, dma_table_size,
IDEDMA_TBL_ALIGN, IDEDMA_TBL_ALIGN, &seg, 1, &rseg,
BUS_DMA_NOWAIT)) != 0) {
printf("%s:%d: unable to allocate table DMA for "
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg,
dma_table_size,
(caddr_t *)&dma_maps->dma_table,
BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
printf("%s:%d: unable to map table DMA for"
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
WDCDEBUG_PRINT(("pciide_dma_table_setup: table at %p len %ld, "
"phy 0x%lx\n", dma_maps->dma_table, dma_table_size,
seg.ds_addr), DEBUG_PROBE);
/* Create and load table DMA map for this disk */
if ((error = bus_dmamap_create(sc->sc_dmat, dma_table_size,
1, dma_table_size, IDEDMA_TBL_ALIGN, BUS_DMA_NOWAIT,
&dma_maps->dmamap_table)) != 0) {
printf("%s:%d: unable to create table DMA map for "
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
if ((error = bus_dmamap_load(sc->sc_dmat,
dma_maps->dmamap_table,
dma_maps->dma_table,
dma_table_size, NULL, BUS_DMA_NOWAIT)) != 0) {
printf("%s:%d: unable to load table DMA map for "
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
WDCDEBUG_PRINT(("pciide_dma_table_setup: phy addr of table 0x%lx\n",
dma_maps->dmamap_table->dm_segs[0].ds_addr), DEBUG_PROBE);
/* Create a xfer DMA map for this drive */
if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX,
NIDEDMA_TABLES, IDEDMA_BYTE_COUNT_MAX, IDEDMA_BYTE_COUNT_ALIGN,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&dma_maps->dmamap_xfer)) != 0) {
printf("%s:%d: unable to create xfer DMA map for "
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
return 0;
}
int
pciide_dma_init(v, channel, drive, databuf, datalen, flags)
void *v;
int channel, drive;
void *databuf;
size_t datalen;
int flags;
{
struct pciide_softc *sc = v;
int error, seg;
struct pciide_dma_maps *dma_maps =
&sc->pciide_channels[channel].dma_maps[drive];
error = bus_dmamap_load(sc->sc_dmat,
dma_maps->dmamap_xfer,
databuf, datalen, NULL, BUS_DMA_NOWAIT);
if (error) {
printf("%s:%d: unable to load xfer DMA map for"
"drive %d, error=%d\n", sc->sc_wdcdev.sc_dev.dv_xname,
channel, drive, error);
return error;
}
bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
dma_maps->dmamap_xfer->dm_mapsize,
(flags & WDC_DMA_READ) ?
BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
WDCDEBUG_PRINT(("pciide_dma_init: %d segs for %p len %d (phy 0x%x)\n",
dma_maps->dmamap_xfer->dm_nsegs, databuf, datalen,
vtophys(databuf)), DEBUG_DMA|DEBUG_XFERS);
for (seg = 0; seg < dma_maps->dmamap_xfer->dm_nsegs; seg++) {
#ifdef DIAGNOSTIC
/* A segment must not cross a 64k boundary */
{
u_long phys = dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
u_long len = dma_maps->dmamap_xfer->dm_segs[seg].ds_len;
if ((phys & ~IDEDMA_BYTE_COUNT_MASK) !=
((phys + len - 1) & ~IDEDMA_BYTE_COUNT_MASK)) {
printf("pciide_dma: segment %d physical addr 0x%lx"
" len 0x%lx not properly aligned\n",
seg, phys, len);
panic("pciide_dma: buf align");
}
}
#endif
dma_maps->dma_table[seg].base_addr =
dma_maps->dmamap_xfer->dm_segs[seg].ds_addr;
dma_maps->dma_table[seg].byte_count =
dma_maps->dmamap_xfer->dm_segs[seg].ds_len &
IDEDMA_BYTE_COUNT_MASK;
WDCDEBUG_PRINT(("\t seg %d len %d addr 0x%x\n",
seg, dma_maps->dma_table[seg].byte_count,
dma_maps->dma_table[seg].base_addr), DEBUG_DMA);
}
dma_maps->dma_table[dma_maps->dmamap_xfer->dm_nsegs -1].byte_count |=
IDEDMA_BYTE_COUNT_EOT;
bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_table, 0,
dma_maps->dmamap_table->dm_mapsize,
BUS_DMASYNC_PREWRITE);
/* Maps are ready. Start DMA function */
#ifdef DIAGNOSTIC
if (dma_maps->dmamap_table->dm_segs[0].ds_addr & ~IDEDMA_TBL_MASK) {
printf("pciide_dma_init: addr 0x%lx not properly aligned\n",
dma_maps->dmamap_table->dm_segs[0].ds_addr);
panic("pciide_dma_init: table align");
}
#endif
WDCDEBUG_PRINT(("phy addr of table at %p = 0x%lx len %ld (%d segs, "
"phys 0x%x)\n",
dma_maps->dma_table,
dma_maps->dmamap_table->dm_segs[0].ds_addr,
dma_maps->dmamap_table->dm_segs[0].ds_len,
dma_maps->dmamap_table->dm_nsegs,
vtophys(dma_maps->dma_table)), DEBUG_DMA);
/* Clear status bits */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel,
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel));
/* Write table addr */
bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_TBL + IDEDMA_SCH_OFFSET * channel,
dma_maps->dmamap_table->dm_segs[0].ds_addr);
/* set read/write */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
(flags & WDC_DMA_READ) ? IDEDMA_CMD_WRITE: 0);
return 0;
}
void
pciide_dma_start(v, channel, drive, flags)
void *v;
int channel, drive, flags;
{
struct pciide_softc *sc = v;
WDCDEBUG_PRINT(("pciide_dma_start\n"),DEBUG_XFERS);
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) | IDEDMA_CMD_START);
}
int
pciide_dma_finish(v, channel, drive, flags)
void *v;
int channel, drive;
int flags;
{
struct pciide_softc *sc = v;
u_int8_t status;
struct pciide_dma_maps *dma_maps =
&sc->pciide_channels[channel].dma_maps[drive];
/* Unload the map of the data buffer */
bus_dmamap_sync(sc->sc_dmat, dma_maps->dmamap_xfer, 0,
dma_maps->dmamap_xfer->dm_mapsize,
(flags & WDC_DMA_READ) ?
BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->sc_dmat, dma_maps->dmamap_xfer);
status = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel);
WDCDEBUG_PRINT(("pciide_dma_finish: status 0x%x\n", status),
DEBUG_XFERS);
/* stop DMA channel */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel,
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + IDEDMA_SCH_OFFSET * channel) & ~IDEDMA_CMD_START);
/* Clear status bits */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CTL + IDEDMA_SCH_OFFSET * channel,
status);
if ((status & IDEDMA_CTL_ERR) != 0) {
printf("%s:%d:%d: Bus-Master DMA error: status=0x%x\n",
sc->sc_wdcdev.sc_dev.dv_xname, channel, drive, status);
return -1;
}
if ((flags & WDC_DMA_POLL) == 0 && (status & IDEDMA_CTL_INTR) == 0) {
printf("%s:%d:%d: Bus-Master DMA error: missing interrupt, "
"status=0x%x\n", sc->sc_wdcdev.sc_dev.dv_xname, channel,
drive, status);
return -1;
}
if ((status & IDEDMA_CTL_ACT) != 0) {
/* data underrun, may be a valid condition for ATAPI */
return 1;
}
return 0;
}
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