tpm(4): device_printf needs \n.

Observed in PR 58255.

tpm(4): Switch tsleep to kpause.

Nothing is interrupt-driven here, so no need for condvars to allow
more prompt wakeups.

Remove unnecessary include of <sys/malloc.h>.

tpm(4): add missing newline character in device_printf()

Observed with on a Sun Ultra 24, NetBSD/amd64:

tpm0 at acpi0 (TPM, IFX0102-1): io 0x4e-0x4f,0x4700-0x470b mem 0xfed40000-0xfed44fff
tpm0: device 0x000b15d1 rev 0x10
tpm0: read 8 bytes, expected 10tpm0: deactivating entropy source

tpm(4): Nix TPM_BE16/TPM_BE32. Just use sys/endian.h.

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Switch tsleep to kpause.

Nothing is interrupt-driven here, so no need for condvars to allow
more prompt wakeups.

Remove unnecessary include of <sys/malloc.h>.

tpm(4): add missing newline character in device_printf()

Observed with on a Sun Ultra 24, NetBSD/amd64:

tpm0 at acpi0 (TPM, IFX0102-1): io 0x4e-0x4f,0x4700-0x470b mem 0xfed40000-0xfed44fff
tpm0: device 0x000b15d1 rev 0x10
tpm0: read 8 bytes, expected 10tpm0: deactivating entropy source

tpm(4): Nix TPM_BE16/TPM_BE32. Just use sys/endian.h.

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

Remove unnecessary include of <sys/malloc.h>.

tpm(4): add missing newline character in device_printf()

Observed with on a Sun Ultra 24, NetBSD/amd64:

tpm0 at acpi0 (TPM, IFX0102-1): io 0x4e-0x4f,0x4700-0x470b mem 0xfed40000-0xfed44fff
tpm0: device 0x000b15d1 rev 0x10
tpm0: read 8 bytes, expected 10tpm0: deactivating entropy source

tpm(4): Nix TPM_BE16/TPM_BE32. Just use sys/endian.h.

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): add missing newline character in device_printf()

Observed with on a Sun Ultra 24, NetBSD/amd64:

tpm0 at acpi0 (TPM, IFX0102-1): io 0x4e-0x4f,0x4700-0x470b mem 0xfed40000-0xfed44fff
tpm0: device 0x000b15d1 rev 0x10
tpm0: read 8 bytes, expected 10tpm0: deactivating entropy source

tpm(4): Nix TPM_BE16/TPM_BE32. Just use sys/endian.h.

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Nix TPM_BE16/TPM_BE32. Just use sys/endian.h.

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Fix suspend and rework I/O transaction lock.

Use sc->sc_lock over individual I/O transactions, not open/close of
the whole device. This way there is a bounded time before the tpm is
unbusied even if userland is getting at it, so userland can't hold up
suspend indefinitely. Of course, the tpm might be suspended and
resumed in the middle of the user's session this way -- tough.

This limits the response buffer to 1024 bytes -- which is already a
bit hefty to have on the stack (but it's probably not very deep on
the stack from userland so maybe not a big deal). If it turns out we
need more, we can use kmem to allocate a buffer on the heap, with the
caveat that it might fail. This is necessary so that suspend doesn't
block indefinitely on uiomove in tpmread.

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Fix disabling of rnd source if tpm is deactivated.

Nothing prevents a second worker from being queued when the first one
is about to do rnd_detach_source. Instead, just set a flag so future
requests don't bother running a new thread; if there's a concurrent
one that's already been scheduled on another CPU, well, too bad, we
get a couple extra log messages but that's fine.

A better way to do this would probably be to detect whether the tpm
is deactivated at attach time, but that requires reading more of the
tpm spec than I care to do when there are alternative ways to
procrastinate like scrubbing the toilet.

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

branches: 1.21.2;
tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.4; 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Preserve error if any on ending commands.

This way we don't spuriously suppress an error, such as
TPM_DEACTIVATED, in a loop where we rely on it.

tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

branches: 1.19.6;
dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

tpm(4): Handle TPM 2.0 random source too, and loop on short reads.

Tested on ThinkPad T480.

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

Remove extra newline from boot messages (isa and acpi front-ends
already provide the newline).

dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

branches: 1.16.8;
Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

dev/ic/tpm: Take advantage of entropy source if available.

If the tpm is deactivated, though, detach the entropy source so we
don't continue to try polling it -- it can't be activated without a
reboot anyway.

dev/ic/tpm: Add missing line break in attach output.

dev/ic/tpm: Tidy up headers.

- Add include guards.
- Add necessary includes.
- Sort includes.
- Use _BYTE_ORDER, not BYTE_ORDER, for public header.

Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

branches: 1.13.2;
Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

branches: 1.12.4;
Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

Provide a better abstraction for the TPM interface. Report it in the ioctl.

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

Add suspend support for TPM 2.0 chips. Check the TPM response also for 1.2
chips. Unfortunately I cannot really test this change since ACPI suspend
does not work on any of my laptops.

Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.

Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net

Revamp the TPM driver

* Fix several bugs, and clean up.
* Drop the "legacy" interface, it relied on an undocumented global
variable that was never initialized. It likely had never been tested
either, so good riddance.
* Add support for TPM 2.0 chips via ACPI. For these we use the TIS1.2
interface, same as TPM 1.2.
* Provide an ioctl to fetch TPM information from the driver.

Tested on a Lenovo desktop with ACPI-TPM2.0, an HP laptop ACPI-TPM2.0, a
Dell laptop with ISA-TPM1.2.

Kill some more extern struct cfdriver declarations.

Down with externs in .c!

Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.10.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

- remove unused variables
- move variables inside ifdef sections
- ifdef notdef unused code
- use __USE for debugging variables

GC unused functions and variables.

branches: 1.7.4; 1.7.6; 1.7.10; 1.7.14;
PR/45932: Pierre Pronchery: Fix the return values of the suspend and resume
functions.

shutup debug.

don't try to write in a const buffer.

reduce the polling interval to 2 seconds, and try harder to get interrupts
working.

cosmetic fixes

as jared noted, this is not mpsafe.

add a tpm driver from bsssd.sourceforge.net