- drop the notion of frags (LFS fragments) vs fsb (FFS fragments)
The code uses a complicated unity function that just makes the
code difficult to understand.
- support larger sector sizes. Fix disk address computations
to use DEV_BSIZE in the kernel as required by device drivers
and to use sector sizes in userland.
- Fix several locking bugs in lfs_bio.c and lfs_subr.c.
three registers. Let us think of the kernel operating the registers
in two steps:
1) Select: enable configuration cycles and select a range of
configuration-space addresses.
2) Access: read or write a word in PCI configuration space.
To make the steps more explicit, extract some helper subroutines
from pci_conf_read(9) and pci_conf_write(9):
pci_conf_selector(tag, reg): from a pcitag_t and a register offset,
create a word that enables configuration cycles and selects a
configuration address range.
pci_conf_select(w): for `w' a word created by pci_conf_selector(),
enable configuration cycles and select the address range indicated
by `w'.
pci_conf_select(0): disable configuration cycles.
pci_conf_port(tag, reg): map a pcitag_t and a register offset to an I/O
port where the configuration access should occur.
While I'm in here, change the panic(9) calls to panic("%s: ...",
__func__) instead of hard-coding a subroutine name.
- Apply the patch for 82575 from Wolfgang Stukenbrock (PR#42422). We use
only one RX ring and with the legacy mode.
- Add support for 82576.
- Partial support for 82580.
- Partial support for the serdes systems.
native i386 by using PDP_SIZE
- introduce pmap_unmap_apdp(), used to clear the APDP entries in PD, and
replace the relevant code parts with this function.
Comes from Jeremy Morse's patch for i386 PAE support. Adjustments by me.
that initializes pci_mode, which I have moved to the top.
Make pci_mode private to pci_machdep.c.
Provide pci_mode_set() for pcibios.c to configure the PCI Configuration
Mechanism. KASSERT() in pci_mode_set() that the mechanism is not
changing from anything but the "don't know" value, -1.
necessary. #define TLB_FLUSH_LOWVA to turn it back on.
- remove the #if 0'd code in sparc64_ipi_flush_pte_usiii(), i have
verified that it is not required.
- add a missing membar #Sync to sp_tlb_flush_pte_usiii().
use it to patch up TLB flush instructions that don't match for USI/II
and later. we can also hopefully use this to make GENERIC.MP minimally
expensive on single CPU machines as well.
this is the last piece needed to get GENERIC/GENERIC.MP to boot on the
USIII* machines.
idea and some initial code from openbsd.
per PR port-i386/42787 (the panic happens due to a GPF when a
privileged descriptor is tried to be loaded with the UPL bit set)
The original bug is very old (pre-2.0, i386/svr4_machdep.c rev. 1.69),
but it was relatively harmless until the order of GDT entries was
shuffled (pre-5.0, i386/segments.h rev. 1.42). Before, it caused
a userlevel data selector to be used for CS which broke the emulation
(likely the reason of PR port-i386/32424). The shuffle made that
a privileged selector was used, causing the GPF.
(recent -current doesn't panic on that GPF which seems to be a
side effect of another change)
1) Add support for multiple filesystems including ffsv1, ffsv2, lfsv1 and lfsv2.
(ffsv1 and lfsv2 are known to work. ffv2 support needs more work. lfsv1 is
probably untested.)
2) Only 32-bit Fcodes are used. All 64-bit math uses two cells. This means it
should work on 32-bit machines.
Additional work to consider:
1) Rename genfth.cf to genffs.cf, or keep it and move the ffs symbols to genffs.cf
2) Move the ffs code and the lfs code to different source files so you can
selectively fload the just the filesystems you want.
3) Add code to load ELF files directly instead of relying on the host firmware
ELF support. But, since the binary is now 7250 bytes there may not be room.
