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freebsd-nq/sys/dev/fdc/fdcvar.h

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Re-work for fdc_acpi. Expose fdc_add_child() and move the static hints-based probe to fdc_hints_probe(). Also: * Fix some resource leaks when attach fails. * Remove the FDC_ATTACHED flag. It was supposed to prevent multiple unloads but this is not necessary.
2004-07-15 16:39:40 +00:00
/*-
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
* Copyright (c) 2004 M. Warner Losh.
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
/* XXX should audit this file to see if additional copyrights needed */
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
enum fdc_type {
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1
};
/*
* Per controller structure (softc).
*/
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
struct fdc_data {
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
int fdcu; /* our unit number */
int dmachan;
int flags;
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
#define FDC_HASDMA 0x01
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
#define FDC_STAT_VALID 0x08
#define FDC_HAS_FIFO 0x10
#define FDC_NEEDS_RESET 0x20
#define FDC_NODMA 0x40
Implement terminating the worker thread when the driver is about to be deregistered. Not yet tested, since by now, GEOM doesn't want us to deregister. PHK wants to fix that RSN.
2004-09-23 21:12:21 +00:00
#define FDC_KTHREAD_EXIT 0x1000 /* request worker thread to stop */
#define FDC_KTHREAD_ALIVE 0x2000 /* worker thread is alive */
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
struct fd_data *fd; /* The active drive */
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
int retry;
int fdout; /* mirror of the w/o digital output reg */
u_int status[7]; /* copy of the registers */
enum fdc_type fdct; /* chip version of FDC */
int fdc_errs; /* number of logged errors */
struct bio_queue_head head;
struct bio *bp; /* active buffer */
Checkpoint the fdc resource changes: o Allow for up to 3 resource I/O ranges to be given for the floppy controller, rather than just two that are allowed for now. o Make sure that we can work with either a base address of 0x3f0 or 0x3f2. o Create new inline functions to access the YE DATA's unique BDCR register. o Update pccard attachment to add the fd device. o Do some minor style(9) polishing. # I'm guessing that the fdc pccard attachment broke some time ago, since # there are a number of issues with it still.
2004-09-14 07:06:49 +00:00
struct resource *res_ioport, *res_sts, *res_ctl, *res_irq, *res_drq;
int rid_ioport, rid_sts, rid_ctl, rid_irq, rid_drq;
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
bus_space_tag_t portt;
bus_space_handle_t porth;
Checkpoint the fdc resource changes: o Allow for up to 3 resource I/O ranges to be given for the floppy controller, rather than just two that are allowed for now. o Make sure that we can work with either a base address of 0x3f0 or 0x3f2. o Create new inline functions to access the YE DATA's unique BDCR register. o Update pccard attachment to add the fd device. o Do some minor style(9) polishing. # I'm guessing that the fdc pccard attachment broke some time ago, since # there are a number of issues with it still.
2004-09-14 07:06:49 +00:00
bus_space_tag_t stst;
bus_space_handle_t stsh;
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
bus_space_tag_t ctlt;
bus_space_handle_t ctlh;
Checkpoint the fdc resource changes: o Allow for up to 3 resource I/O ranges to be given for the floppy controller, rather than just two that are allowed for now. o Make sure that we can work with either a base address of 0x3f0 or 0x3f2. o Create new inline functions to access the YE DATA's unique BDCR register. o Update pccard attachment to add the fd device. o Do some minor style(9) polishing. # I'm guessing that the fdc pccard attachment broke some time ago, since # there are a number of issues with it still.
2004-09-14 07:06:49 +00:00
int port_off;
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
int ctl_off;
Checkpoint the fdc resource changes: o Allow for up to 3 resource I/O ranges to be given for the floppy controller, rather than just two that are allowed for now. o Make sure that we can work with either a base address of 0x3f0 or 0x3f2. o Create new inline functions to access the YE DATA's unique BDCR register. o Update pccard attachment to add the fd device. o Do some minor style(9) polishing. # I'm guessing that the fdc pccard attachment broke some time ago, since # there are a number of issues with it still.
2004-09-14 07:06:49 +00:00
int sts_off;
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
void *fdc_intr;
struct device *fdc_dev;
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
struct mtx fdc_mtx;
struct proc *fdc_thread;
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
};
extern devclass_t fdc_devclass;
Update in preparation for adding the ACPI attachment. * Add an fdtype ivar. This will be the equivalent of fd->type. * Move enabling the FIFO to the end of attach. * Unify reset code into fdc_initial_reset(). * Add fdc_write_ivar(). * Update isa and pccard attachments accordingly. * Set the flags unconditionally in probe since they may be overridden by other probe routines. Both before and now, we're depending on probe being called a final time on the winning driver so the flags we get are the ones we intended. * Use the bus accessor macros instead of defining our own. * Remove duplicate assigns of fd->type.
2004-07-12 20:49:26 +00:00
enum fdc_device_ivars {
FDC_IVAR_FDUNIT,
FDC_IVAR_FDTYPE,
};
__BUS_ACCESSOR(fdc, fdunit, FDC, FDUNIT, int);
__BUS_ACCESSOR(fdc, fdtype, FDC, FDTYPE, int);
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
void fdc_release_resources(struct fdc_data *);
int fdc_attach(device_t);
Re-work for fdc_acpi. Expose fdc_add_child() and move the static hints-based probe to fdc_hints_probe(). Also: * Fix some resource leaks when attach fails. * Remove the FDC_ATTACHED flag. It was supposed to prevent multiple unloads but this is not necessary.
2004-07-15 16:39:40 +00:00
int fdc_hints_probe(device_t);
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
int fdc_detach(device_t dev);
Re-work for fdc_acpi. Expose fdc_add_child() and move the static hints-based probe to fdc_hints_probe(). Also: * Fix some resource leaks when attach fails. * Remove the FDC_ATTACHED flag. It was supposed to prevent multiple unloads but this is not necessary.
2004-07-15 16:39:40 +00:00
device_t fdc_add_child(device_t, const char *, int);
Rewrite of the floppy driver to make it MPsafe & GEOM friendly: Centralize the fdctl_wr() function by adding the offset in the resource to the softc structure. Bugfix: Read the drive-change signal from the correct place: same place as the ctl register. Remove the cdevsw{} related code and implement a GEOM class. Ditch the state-engine and park a thread on each controller to service the queue. Make the interrupt FAST & MPSAFE since it is just a simple wakeup(9) call. Rely on a per controller mutex to protect the bioqueues. Grab GEOMs topology lock when we have to and Giant when ISADMA needs it. Since all access to the hardware is isolated in the per controller thread, the rest of the driver is lock & Giant free. Create a per-drive queue where requests are parked while the motor spins up. When the motor is running the requests are purged to the per controller queue. This allows requests to other drives to be serviced during spin-up. Only setup the motor-off timeout when we finish the last request on the queue and cancel it when a new request arrives. This fixes the bug in the old code where the motor turned off while we were still retrying a request. Make the "drive-change" work reliably. Probe the drive on first opens. Probe with a recal and a seek to cyl=1 to reset the drive change line and check again to see if we have a media. When we see the media disappear we destroy the geom provider, create a new one, and flag that autodetection should happen next time we see a media (unless a specific format is configured). Add sysctl tunables for a lot of drive related parameters. If you spend a lot of time waiting for floppies you can grab the i82078 pdf from Intels web-page and try tuning these. Add sysctl debug.fdc.debugflags which will enable various kinds of debugging printfs. Add central definitions of our well known floppy formats. Simplify datastructures for autoselection of format and call the code at the right times. Bugfix: Remove at least one piece of code which would have made 2.88M floppies not work. Use implied seeks on enhanced controllers. Use multisector transfers on all controllers. Increase ISADMA bounce buffers accordingly. Fall back to single sector when retrying. Reset retry count on every successful transaction. Sort functions in a more sensible order and generally tidy up a fair bit here and there. Assorted related fixes and adjustments in userland utilities. WORKAROUNDS: Do allow r/w opens of r/o media but refuse actual write operations. This is necessary until the p4::phk_bufwork branch gets integrated (This problem relates to remounting not reopening devices, see sys/*/*/${fs}_vfsops.c for details). Keep PC98's private copy of the old floppy driver compiling and presumably working (see below). TODO (planned) Move probing of drives until after interrupts/timeouts work (like for ATA/SCSI drives). TODO (unplanned) This driver should be made to work on PC98 as well. Test on YE-DATA PCMCIA floppy drive. Fix 2.88M media. This is a MT5 candidate (depends on the bioq_takefirst() addition).
2004-08-20 15:14:25 +00:00
int fdc_initial_reset(device_t, struct fdc_data *);
Break out the isa and pccard front ends from fdc. This is the first step in making this driver more attachment neutral. Others plan on adding acpi front ends. Still need to cleanup the MI part of the driver because it isn't as bus independent as it could be.
2004-07-07 22:35:27 +00:00
int fdc_print_child(device_t, device_t);
int fdc_read_ivar(device_t, device_t, int, uintptr_t *);
Update in preparation for adding the ACPI attachment. * Add an fdtype ivar. This will be the equivalent of fd->type. * Move enabling the FIFO to the end of attach. * Unify reset code into fdc_initial_reset(). * Add fdc_write_ivar(). * Update isa and pccard attachments accordingly. * Set the flags unconditionally in probe since they may be overridden by other probe routines. Both before and now, we're depending on probe being called a final time on the winning driver so the flags we get are the ones we intended. * Use the bus accessor macros instead of defining our own. * Remove duplicate assigns of fd->type.
2004-07-12 20:49:26 +00:00
int fdc_write_ivar(device_t, device_t, int, uintptr_t);
Re-work for fdc_acpi. Expose fdc_add_child() and move the static hints-based probe to fdc_hints_probe(). Also: * Fix some resource leaks when attach fails. * Remove the FDC_ATTACHED flag. It was supposed to prevent multiple unloads but this is not necessary.
2004-07-15 16:39:40 +00:00
int fdc_isa_alloc_resources(device_t, struct fdc_data *);
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