CVS log for src/sys/arch/powerpc/powerpc/clock.c

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Pull up following revision(s) (requested by jmcneill in ticket #986):

	sys/arch/evbppc/wii/machdep.c: revision 1.8
	sys/arch/powerpc/powerpc/clock.c: revision 1.19

Improve delay() accuracy on Nintendo Wii.

The PowerPC delay() implementation converts the timebase frequency to
a number of nanoseconds per tick and uses that value to compute the
delay interval. On the Wii's Broadway processor with a timebase
frequency of 60.75 MHz, some precision is lost as each tick is
approximately 16.46 nanoseconds. The end result is that we sleep for
approximately 2.875% longer than necessary. This also has an impact
on CPU speed calculation on Broadway, which incorrectly reports itself
as 750MHz instead of 729MHz (2.875% faster).

Fix this by introducing an (optional) ticks_per_msec variable that can
be set by the platform and allows delay() to improve the accuracy of
longer delays.

Measured CPU frequency before this change:
[     1.000000] cpu0: 750.00 MHz, 256KB WB with ECC L2 cache
Measured CPU frequency after this change:
[     1.000000] cpu0: 729.00 MHz, 256KB WB with ECC L2 cache

Improve delay() accuracy on Nintendo Wii.

The PowerPC delay() implementation converts the timebase frequency to
a number of nanoseconds per tick and uses that value to compute the
delay interval. On the Wii's Broadway processor with a timebase
frequency of 60.75 MHz, some precision is lost as each tick is
approximately 16.46 nanoseconds. The end result is that we sleep for
approximately 2.875% longer than necessary. This also has an impact
on CPU speed calculation on Broadway, which incorrectly reports itself
as 750MHz instead of 729MHz (2.875% faster).

Fix this by introducing an (optional) ticks_per_msec variable that can
be set by the platform and allows delay() to improve the accuracy of
longer delays.

Measured CPU frequency before this change:
[     1.000000] cpu0: 750.00 MHz, 256KB WB with ECC L2 cache

Measured CPU frequency after this change:
[     1.000000] cpu0: 729.00 MHz, 256KB WB with ECC L2 cache

Pull up following revision(s) (requested by jmcneill in ticket #561):

	etc/etc.evbppc/Makefile.inc: revision 1.15
	sys/arch/evbppc/wii/dev/wiifb.c: revision 1.1
	sys/arch/evbppc/wii/dev/wiifb.c: revision 1.2
	sys/arch/evbppc/wii/dev/bwdsp.c: revision 1.1
	sys/arch/evbppc/wii/dev/wiifb.c: revision 1.3
	sys/arch/evbppc/wii/dev/bwdsp.c: revision 1.2
	distrib/utils/embedded/files/evbppc_wii_icon.png: revision 1.1
	usr.sbin/sysinst/arch/evbppc/md.h: revision 1.4
	sys/arch/evbppc/wii/dev/wiifb.c: revision 1.4
	sys/arch/evbppc/wii/dev/viio.h: revision 1.1
	sys/arch/evbppc/wii/dev/wiifb.c: revision 1.5
	sys/arch/evbppc/wii/dev/mainbus.h: revision 1.1
	distrib/utils/embedded/conf/wii.conf: revision 1.1
	distrib/utils/embedded/conf/wii.conf: revision 1.2
	distrib/utils/embedded/conf/wii.conf: revision 1.3
	sys/dev/sdmmc/sdhcvar.h: revision 1.34
	sys/dev/sdmmc/sdhc.c: revision 1.118
	sys/arch/evbppc/wii/dev/resetbtn.c: revision 1.1
	distrib/utils/embedded/conf/evbppc.conf: revision 1.1
	sys/dev/wsfb/genfb.c: revision 1.91
	sys/arch/evbppc/wii/dev/resetbtn.c: revision 1.2
	sys/dev/wscons/wsconsio.h: revision 1.127
	sys/arch/powerpc/oea/oea_machdep.c: revision 1.85
	sys/arch/evbppc/wii/dev/hollywood.h: revision 1.1
	sys/arch/evbppc/conf/std.wii: revision 1.1
	sys/arch/evbppc/wii/dev/hollywood.h: revision 1.2
	sys/arch/evbppc/wii/dev/hollywood.c: revision 1.1
	sys/arch/evbppc/conf/std.wii: revision 1.2
	sys/arch/evbppc/wii/dev/hollywood.c: revision 1.2
	sys/arch/evbppc/conf/std.wii: revision 1.3
	sys/arch/powerpc/oea/cpu_subr.c: revision 1.109
	sys/arch/evbppc/wii/wii_mmuinit.S: revision 1.1
	sys/dev/usb/usb.h: revision 1.124
	sys/arch/evbppc/wii/machdep.c: revision 1.1
	sys/arch/evbppc/wii/dev/rtcsram.c: revision 1.1
	sys/arch/powerpc/include/oea/hid.h: revision 1.14
	sys/arch/evbppc/wii/mainbus.c: revision 1.1
	sys/arch/evbppc/wii/machdep.c: revision 1.2
	sys/arch/evbppc/wii/dev/ehci_hollywood.c: revision 1.1
	sys/arch/evbppc/wii/mainbus.c: revision 1.2
	sys/arch/evbppc/wii/machdep.c: revision 1.3
	sys/arch/evbppc/wii/dev/ehci_hollywood.c: revision 1.2
	sys/arch/evbppc/wii/mainbus.c: revision 1.3
	sys/arch/evbppc/wii/machdep.c: revision 1.4
	sys/arch/evbppc/wii/dev/hwgpio.c: revision 1.1
	sys/arch/evbppc/wii/dev/sdhc_hollywood.c: revision 1.1
	sys/arch/evbppc/wii/dev/sdhc_hollywood.c: revision 1.2
	sys/arch/evbppc/wii/wii_locore.S: revision 1.1
	sys/arch/evbppc/conf/files.wii: revision 1.1
	sys/arch/evbppc/wii/wii_locore.S: revision 1.2
	sys/arch/evbppc/include/wii.h: revision 1.1
	sys/arch/evbppc/conf/files.wii: revision 1.2
	sys/arch/evbppc/wii/dev/exi.c: revision 1.1
	sys/arch/evbppc/include/wii.h: revision 1.2
	sys/arch/evbppc/conf/files.wii: revision 1.3
	sys/arch/powerpc/powerpc/clock.c: revision 1.18
	sys/arch/evbppc/include/wii.h: revision 1.3
	sys/arch/evbppc/conf/files.wii: revision 1.4
	sys/arch/evbppc/include/wii.h: revision 1.4
	sys/arch/evbppc/wii/dev/exi.h: revision 1.1
	sys/arch/evbppc/wii/dev/avenc.c: revision 1.1
	sys/arch/evbppc/include/wii.h: revision 1.5
	sys/arch/evbppc/include/wii.h: revision 1.6
	sys/arch/evbppc/include/wii.h: revision 1.7
	sys/arch/evbppc/wii/dev/avenc.h: revision 1.1
	distrib/utils/embedded/mkimage: revision 1.79
	sys/arch/evbppc/conf/WII: revision 1.1
	sys/arch/evbppc/conf/INSTALL_WII: revision 1.1
	distrib/utils/embedded/files/evbppc_wii_meta.xml: revision 1.1
	sys/arch/evbppc/wii/dev/vireg.h: revision 1.1
	sys/arch/evbppc/conf/WII: revision 1.2
	distrib/utils/embedded/files/evbppc_wii_meta.xml: revision 1.2
	sys/arch/evbppc/wii/dev/vireg.h: revision 1.2
	sys/arch/evbppc/conf/WII: revision 1.3
	sys/arch/evbppc/conf/WII: revision 1.4
	usr.sbin/sysinst/arch/evbppc/md.c: revision 1.11
	sys/arch/evbppc/wii/dev/ohci_hollywood.c: revision 1.1
	sys/dev/usb/ehcivar.h: revision 1.52
	sys/arch/evbppc/wii/pic_pi.c: revision 1.1
	sys/arch/evbppc/wii/dev/ohci_hollywood.c: revision 1.2
	etc/etc.evbppc/ttys: revision 1.8
	sys/arch/evbppc/wii/dev/bwai.c: revision 1.1
	sys/arch/evbppc/wii/dev/bwai.c: revision 1.2
	sys/arch/evbppc/wii/dev/bwai.c: revision 1.3
	sys/arch/evbppc/wii/autoconf.c: revision 1.1
	sys/arch/evbppc/conf/Makefile.wii.inc: revision 1.1
	sys/arch/evbppc/wii/dev/bwai.h: revision 1.1
	sys/arch/evbppc/wii/autoconf.c: revision 1.2
	sys/arch/evbppc/conf/Makefile.wii.inc: revision 1.2

powerpc: oea: Fix prefetchable mappings
Prefetchable mappings need PMAP_NOCACHE to get write-combine semantics.
powerpc: oea: Decode IBM750CL L2 cache information.
sdmmc: add support for optional delay after register write
wscons: Add HOLLYWOOD display and YUY2 pixel format types
wsfb: add support for optional "devcmap" property
A hardware driver can supply a pointer to a 16x 32-bit array to override
the default rasops device colour map in the "devcmap" property.
ehci: add EHCIF_32BIT_ACCESS flag to force 32-bit MMIO
fix comments: HID0 ICFI/DCFI are "flash invalidate", not "flush invalidate"
powerpc: fix delay for large (> ~5sec) values
When calculating the target timebase, promote '1000' on the RHS to ULL
to force 64-bit calculation, otherwise 'n * 1000' will overflow.
usb: increase USB_PORT_RESET_RECOVERY from 10ms to 20ms
I changed this from 250ms to 10ms back in 2021 based on a similar FreeBSD
change, but it seems to be a bit too aggressive for some platforms.
evbppc: Add initial support for the Nintendo Wii
wii: support RB_POWERDOWN
build fix: use dd with count=1 for compat with NetBSD dd(1)
wii: Add NTSC 480p support.
In addition to this, add VIIO_{GET,SET}REGS ioctl support to allow for
poking at video interface registers from userland. This is helpful for
debugging display issues.
wii: Add 128x48 icon to SD card image
wii: Fix a comment
wii: Add drivers for Broadway DSP and Audio interface.
0: [*] audio0 @ bwdsp0: Broadway DSP
       playback: 16, 2ch, 48000Hz
       record:   unavailable
       (P-) slinear_be 16/16, 2ch, { 48000 }
wii: Add screenblank support.
wii: Use screen dimming register for screen blanking.
wii: Add GPIO, I2C, and basic A/V encoder driver.
wii: Use A/V encoder volume controls instead of using a software filter.
wii: Simply DSP driver - no interrupt handler required.
wii: provide device names to intr_establish
wii$ intrctl list
interrupt id      CPU0  device name(s)
pi irq 14        64769* hollywood0
hollywood irq 36  5872* ehci0
hollywood irq 39 58907* sdhc0
hollywood irq 40     4* sdhc1
hollywood irq 49     0* resetbtn0
pi irq 5             0* bwai0
wii: Add support for passing boot options to the kernel.
wii: Add External interface bus and RTC support
wii: Remove objcopy after kernel build.
HBC will do the right thing.
Add wsvt25 entries (off by default) for ttyE0-ttyE3.
Add support for "PAL" (576i) mode on Wii.

powerpc: fix delay for large (> ~5sec) values

When calculating the target timebase, promote '1000' on the RHS to ULL
to force 64-bit calculation, otherwise 'n * 1000' will overflow.

Include missing opt_ppcarch.h.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

> Can we use c99 field initializers here instead of comments?!?

Yes, yes we can.

split 601 and generic PowerPC timecounter code a bit more

support ppc601
from scole_mail, ok matt@

resync from head

make delay() work with _ARCH_PPC64

Catchup with rmind-uvmplock merge.

cleanup includes (include <powerpc/psl.h explicitly)

enable FAST_SOFTINTR support for all ports that use powerpc/pic/
This has been successfully tested on macppc
TODO:
- ibm4xx needs to be adapted
- SMP doesn't work yet, 2nd CPU crashes when trying to leave the idle loop

Sync with HEAD.

sync with head

Add support for BookE Freescale MPC85xx (e500 core) processors.
Add fast softint support for PowerPC (though only booke uses it).
Redo FPU/VEC support and add e500 SPE support.
Rework trap/intrs to use a common trapframe format.
Support SOFTFLOAT (no hardfloat or fpu emulation) for BookE.

Add booke support

Move counting of faults, traps, intrs, soft[intr]s, syscalls, and nswtch
from uvmexp to per-cpu cpu_data and move them to 64bits.  Remove unneeded
includes of <uvm/uvm_extern.h> and/or <uvm/uvm.h>.

sync with head.

sync with head

Sync with HEAD.

Support 64-bit imask for powerpc/pic.

sync with head

Adapt to spr.h breakup.

sync with HEAD

Sync with HEAD.

sync with head.

Ifdef out all the MPC601 code with PPC_OEA601.  Now only arches that have the
possibility of running on an MPC601, are infected with all the extra code
and nops that it added.

Also, fix compilation that I broke with the pmap code, by adding
oeacpufeat to the locores of various ppc arches.  Noted by mlelstv.

sync with head

sync with HEAD

Sync with HEAD

ANSIfy.

sync with HEAD

sync with head.

Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.

Sync with HEAD.

Sync with head.

sync with head.

file clock.c was added on branch matt-armv6 on 2007-11-06 23:20:59 +0000

Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree.  Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches.  The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

Add the new shared powerpc clock.c.  Tested on prep.  Based on the macppc
version which was based on the prep version.

Rename NetBSD/powerpc to NetBSD/ofppc.
New sys/arch/powerpc with PowerPC-generic stuff.

Adjust for new machine_vec-based interrupt, from Wolfgang Solfrank.

PowerPC port