30 Dec, 2020
1 commit
-
commit a7b5458ce73b235be027cf2658c39b19b7e58cf2 upstream.
Don't add platform resources that won't be used. This avoids a
recently-added warning from the driver core, that can show up on a
multi-platform kernel when !MACH_IS_MAC.------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at drivers/base/platform.c:224 platform_get_irq_optional+0x8e/0xce
0 is an invalid IRQ number
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 5.9.0-multi #1
Stack from 004b3f04:
004b3f04 00462c2f 00462c2f 004b3f20 0002e128 004754db 004b6ad4 004b3f4c
0002e19c 004754f7 000000e0 00285ba0 00000009 00000000 004b3f44 ffffffff
004754db 004b3f64 004b3f74 00285ba0 004754f7 000000e0 00000009 004754db
004fdf0c 005269e2 004fdf0c 00000000 004b3f88 00285cae 004b6964 00000000
004fdf0c 004b3fac 0051cc68 004b6964 00000000 004b6964 00000200 00000000
0051cc3e 0023c18a 004b3fc0 0051cd8a 004fdf0c 00000002 0052b43c 004b3fc8
Call Trace: [] __warn+0xa6/0xd6
[] warn_slowpath_fmt+0x44/0x76
[] platform_get_irq_optional+0x8e/0xce
[] platform_get_irq_optional+0x8e/0xce
[] platform_get_irq+0x12/0x4c
[] pmz_init_port+0x2a/0xa6
[] pmz_init_port+0x0/0xa6
[] strlen+0x0/0x22
[] pmz_probe+0x34/0x88
[] pmz_console_init+0x8/0x28
[] console_init+0x1e/0x28
[] printk+0x0/0x16
[] start_kernel+0x368/0x4ce
[] _sinittext+0x4f8/0xc48
random: get_random_bytes called from print_oops_end_marker+0x56/0x80 with crng_init=0
---[ end trace 392d8e82eed68d6c ]---Commit a85a6c86c25b ("driver core: platform: Clarify that IRQ 0 is invalid"),
which introduced the WARNING, suggests that testing for irq == 0 is
undesirable. Instead of that comparison, just test for resource existence.Cc: Michael Ellerman
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Joshua Thompson
Cc: Greg Kroah-Hartman
Cc: Jiri Slaby
Cc: stable@vger.kernel.org # v5.8+
Reported-by: Laurent Vivier
Signed-off-by: Finn Thain
Link: https://lore.kernel.org/r/0c0fe1e4f11ccec202d4df09ea7d9d98155d101a.1606001297.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven
Signed-off-by: Greg Kroah-Hartman
13 Oct, 2020
1 commit
-
Pull m68k updates from Geert Uytterhoeven:
- Conversion of the Mac IDE driver to a platform driver
- Minor cleanups and fixes
* tag 'm68k-for-v5.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
ide/macide: Convert Mac IDE driver to platform driver
m68k: Replace HTTP links with HTTPS ones
m68k: mm: Remove superfluous memblock_alloc*() casts
m68k: mm: Use PAGE_ALIGNED() helper
m68k: Sort selects in main Kconfig
m68k: amiga: Clean up Amiga hardware configuration
m68k: Revive _TIF_* masks
m68k: Correct some typos in comments
m68k: Use get_kernel_nofault() in show_registers()
zorro: Fix address space collision message with RAM expansion boards
m68k: amiga: Fix Denise detection on OCS
28 Sep, 2020
1 commit
-
Add platform devices for the Mac IDE controller variants. Convert the
macide module into a platform driver to support two of those variants.
For the third, use a generic "pata_platform" driver instead.
This enables automatic loading of the appropriate module and begins
the process of replacing the driver with libata alternatives.Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Bartlomiej Zolnierkiewicz
Cc: Joshua Thompson
References: commit 5ed0794cde593 ("m68k/atari: Convert Falcon IDE drivers to platform drivers")
References: commit 7ad19a99ad431 ("ide: officially deprecated the legacy IDE driver")
Link: https://lore.kernel.org/r/edd106dad1bbea32500601c6071f37a9f02a8004.1600901284.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven
07 Sep, 2020
1 commit
-
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.Signed-off-by: Alexander A. Klimov
Link: https://lore.kernel.org/r/20200826185212.3139-1-grandmaster@al2klimov.de
Signed-off-by: Geert Uytterhoeven
24 Aug, 2020
1 commit
-
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva
13 Jul, 2020
4 commits
-
Always dump the full message and reply. Avoid printing partial lines
as this output gets mixed up with the output from called functions.
Don't output the state of idle channels.Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/317909d69244f06581973c5839382f5516cd9a1c.1590880333.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven -
Clear the message reply before calling iop_complete(). This code path is
not normally executed but should that happen let's arrange for consistent
behaviour from the IOP.Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/8e35df4d193b082cb6285b1f30c949ff7e30e99e.1590880333.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven -
When writing values to the IOP status/control register make sure those
values do not have any extraneous bits that will clear interrupt flags.To place the SCC IOP into bypass mode would be desirable but this is not
achieved by writing IOP_DMAINACTIVE | IOP_RUN | IOP_AUTOINC | IOP_BYPASS
to the control register. Drop this ineffective register write.Remove the flawed and unused iop_bypass() function. Make use of the
unused iop_stop() function.Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/09bcb7359a1719a18b551ee515da3c4c3cf709e6.1590880333.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven -
In the following sequence of calls, iop_do_send() gets called when the
"send" channel is not in the IOP_MSG_IDLE state:iop_ism_irq()
iop_handle_send()
(msg->handler)()
iop_send_message()
iop_do_send()Avoid this by testing the channel state before calling iop_do_send().
When sending, and iop_send_queue is empty, call iop_do_send() because
the channel is idle. If iop_send_queue is not empty, iop_do_send() will
get called later by iop_handle_send().Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/6d667c39e53865661fa5a48f16829d18ed8abe54.1590880333.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven
10 Jun, 2020
1 commit
-
Patch series "mm: consolidate definitions of page table accessors", v2.
The low level page table accessors (pXY_index(), pXY_offset()) are
duplicated across all architectures and sometimes more than once. For
instance, we have 31 definition of pgd_offset() for 25 supported
architectures.Most of these definitions are actually identical and typically it boils
down to, e.g.static inline unsigned long pmd_index(unsigned long address)
{
return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}These definitions can be shared among 90% of the arches provided
XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined.For architectures that really need a custom version there is always
possibility to override the generic version with the usual ifdefs magic.These patches introduce include/linux/pgtable.h that replaces
include/asm-generic/pgtable.h and add the definitions of the page table
accessors to the new header.This patch (of 12):
The linux/mm.h header includes to allow inlining of the
functions involving page table manipulations, e.g. pte_alloc() and
pmd_alloc(). So, there is no point to explicitly include
in the files that include .The include statements in such cases are remove with a simple loop:
for f in $(git grep -l "include ") ; do
sed -i -e '/include / d' $f
doneSigned-off-by: Mike Rapoport
Signed-off-by: Andrew Morton
Cc: Arnd Bergmann
Cc: Borislav Petkov
Cc: Brian Cain
Cc: Catalin Marinas
Cc: Chris Zankel
Cc: "David S. Miller"
Cc: Geert Uytterhoeven
Cc: Greentime Hu
Cc: Greg Ungerer
Cc: Guan Xuetao
Cc: Guo Ren
Cc: Heiko Carstens
Cc: Helge Deller
Cc: Ingo Molnar
Cc: Ley Foon Tan
Cc: Mark Salter
Cc: Matthew Wilcox
Cc: Matt Turner
Cc: Max Filippov
Cc: Michael Ellerman
Cc: Michal Simek
Cc: Mike Rapoport
Cc: Nick Hu
Cc: Paul Walmsley
Cc: Richard Weinberger
Cc: Rich Felker
Cc: Russell King
Cc: Stafford Horne
Cc: Thomas Bogendoerfer
Cc: Thomas Gleixner
Cc: Tony Luck
Cc: Vincent Chen
Cc: Vineet Gupta
Cc: Will Deacon
Cc: Yoshinori Sato
Link: http://lkml.kernel.org/r/20200514170327.31389-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org
Signed-off-by: Linus Torvalds
25 May, 2020
3 commits
-
On a Quadra 900/950, the ISM IOP IRQ output pin is connected to an
edge-triggered input on VIA2. It is theoretically possible that this
signal could fail to produce the expected VIA2 interrupt.The two IOP interrupt flags can be asserted in any order but the logic
in iop_ism_irq() does not allow for that. In particular, INT0 can be
asserted right after INT0 is checked and before INT1 is cleared.Such an interrupt would produce no new edge and VIA2 would detect no
further interrupts from the IOP. Avoid this by looping over the INT0/1
handlers so an edge can be produced.Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/bfbb71db52c5e162d3afa25a28fc5d535ca87138.1589949122.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven -
This code path was tested on a Quadra 950 a long time ago and the
comment isn't needed.Signed-off-by: Finn Thain
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/10dff3e7c17d363a4b239aae7b3ebab32bef3547.1589949122.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven -
There is no VIA2 chip on the Mac IIfx, so don't call via_flush_cache().
This avoids a boot crash which appeared in v5.4.printk: console [ttyS0] enabled
printk: bootconsole [debug0] disabled
printk: bootconsole [debug0] disabled
Calibrating delay loop... 9.61 BogoMIPS (lpj=48064)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
devtmpfs: initialized
random: get_random_u32 called from bucket_table_alloc.isra.27+0x68/0x194 with crng_init=0
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 256 (order: -1, 3072 bytes, linear)
NET: Registered protocol family 16
Data read fault at 0x00000000 in Super Data (pc=0x8a6a)
BAD KERNEL BUSERR
Oops: 00000000
Modules linked in:
PC: [] via_flush_cache+0x12/0x2c
SR: 2700 SP: 01c1fe3c a2: 01c24000
d0: 00001119 d1: 0000000c d2: 00012000 d3: 0000000f
d4: 01c06840 d5: 00033b92 a0: 00000000 a1: 00000000
Process swapper (pid: 1, task=01c24000)
Frame format=B ssw=0755 isc=0200 isb=fff7 daddr=00000000 dobuf=01c1fed0
baddr=00008a6e dibuf=0000004e ver=f
Stack from 01c1fec4:
01c1fed0 00007d7e 00010080 01c1fedc 0000792e 00000001 01c1fef4 00006b40
01c80000 00040000 00000006 00000003 01c1ff1c 004a545e 004ff200 00040000
00000000 00000003 01c06840 00033b92 004a5410 004b6c88 01c1ff84 000021e2
00000073 00000003 01c06840 00033b92 0038507a 004bb094 004b6ca8 004b6c88
004b6ca4 004b6c88 000021ae 00020002 00000000 01c0685d 00000000 01c1ffb4
0049f938 00409c85 01c06840 0045bd40 00000073 00000002 00000002 00000000
Call Trace: [] mac_cache_card_flush+0x12/0x1c
[] fix_dnrm+0x2/0x18
[] cache_push+0x46/0x5a
[] arch_dma_prep_coherent+0x60/0x6e
[] switched_to_dl+0x76/0xd0
[] dma_atomic_pool_init+0x4e/0x188
[] switched_to_dl+0x76/0xd0
[] parse_args+0x0/0x370
[] dma_atomic_pool_init+0x0/0x188
[] do_one_initcall+0x34/0x1be
[] parse_args+0x0/0x370
[] strcpy+0x0/0x1e
[] do_one_initcall+0x0/0x1be
[] do_proc_dointvec_conv+0x54/0x74
[] kernel_init_freeable+0x126/0x190
[] kernel_init_freeable+0x13a/0x190
[] dma_atomic_pool_init+0x0/0x188
[] complete+0x0/0x3c
[] kfree+0x0/0x20a
[] schedule+0x0/0xd0
[] kernel_init+0x0/0xda
[] kernel_init+0xc/0xda
[] kernel_init+0x0/0xda
[] ret_from_kernel_thread+0xc/0x14
Code: 0000 2079 0048 10da 2279 0048 10c8 d3c8 0200 fff7 1280 d1f9 0048 10c8 1010 0000 0008 1080 4e5e 4e75 4e56 0000 2039
Disabling lock debugging due to kernel taint
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000bThanks to Stan Johnson for capturing the console log and running git
bisect.Git bisect said commit 8e3a68fb55e0 ("dma-mapping: make
dma_atomic_pool_init self-contained") is the first "bad" commit. I don't
know why. Perhaps mach_l2_flush first became reachable with that commit.Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-and-tested-by: Stan Johnson
Signed-off-by: Finn Thain
Cc: Joshua Thompson
Link: https://lore.kernel.org/r/b8bbeef197d6b3898e82ed0d231ad08f575a4b34.1589949122.git.fthain@telegraphics.com.au
Signed-off-by: Geert Uytterhoeven
19 Aug, 2019
1 commit
-
Rename floppy_type macros to make them more consistent with the scsi_type
macros, which are named after classes of models with similar memory maps.The MAC_FLOPPY_OLD symbol is introduced to change the relevant base
address from 0x50F00000 to 0x50000000 (consistent with MAC_SCSI_OLD).The documentation for LC-class machines has the IO devices at offsets
from $50F00000. Use these addresses for MAC_FLOPPY_LC (consistent with
MAC_SCSI_LC) because they may not be aliased elsewhere in the memory map.Add comments with controller type information from 'Designing Cards and
Drivers for the Macintosh Family', relevant Developer Notes and
http://mess.redump.net/mess/driver_info/mac_technical_notesAdopt phys_addr_t to avoid type casts.
Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Acked-by: Laurent Vivier
Signed-off-by: Geert Uytterhoeven
12 Jul, 2019
1 commit
-
Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs,
mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the
removal of the osst driver (I heard from Willem privately that he
would like the driver removed because all his test hardware has
failed). Plus number of minor changes, spelling fixes and other
trivia.The big merge conflict this time around is the SPDX licence tags.
Following discussion on linux-next, we believe our version to be more
accurate than the one in the tree, so the resolution is to take our
version for all the SPDX conflicts"Note on the SPDX license tag conversion conflicts: the SCSI tree had
done its own SPDX conversion, which in some cases conflicted with the
treewide ones done by Thomas & co.In almost all cases, the conflicts were purely syntactic: the SCSI tree
used the old-style SPDX tags ("GPL-2.0" and "GPL-2.0+") while the
treewide conversion had used the new-style ones ("GPL-2.0-only" and
"GPL-2.0-or-later").In these cases I picked the new-style one.
In a few cases, the SPDX conversion was actually different, though. As
explained by James above, and in more detail in a pre-pull-request
thread:"The other problem is actually substantive: In the libsas code Luben
Tuikov originally specified gpl 2.0 only by dint of stating:* This file is licensed under GPLv2.
In all the libsas files, but then muddied the water by quoting GPLv2
verbatim (which includes the or later than language). So for these
files Christoph did the conversion to v2 only SPDX tags and Thomas
converted to v2 or later tags"So in those cases, where the spdx tag substantially mattered, I took the
SCSI tree conversion of it, but then also took the opportunity to turn
the old-style "GPL-2.0" into a new-style "GPL-2.0-only" tag.Similarly, when there were whitespace differences or other differences
to the comments around the copyright notices, I took the version from
the SCSI tree as being the more specific conversion.Finally, in the spdx conversions that had no conflicts (because the
treewide ones hadn't been done for those files), I just took the SCSI
tree version as-is, even if it was old-style. The old-style conversions
are perfectly valid, even if the "-only" and "-or-later" versions are
perhaps more descriptive.* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (185 commits)
scsi: qla2xxx: move IO flush to the front of NVME rport unregistration
scsi: qla2xxx: Fix NVME cmd and LS cmd timeout race condition
scsi: qla2xxx: on session delete, return nvme cmd
scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices
scsi: megaraid_sas: Update driver version to 07.710.06.00-rc1
scsi: megaraid_sas: Introduce various Aero performance modes
scsi: megaraid_sas: Use high IOPS queues based on IO workload
scsi: megaraid_sas: Set affinity for high IOPS reply queues
scsi: megaraid_sas: Enable coalescing for high IOPS queues
scsi: megaraid_sas: Add support for High IOPS queues
scsi: megaraid_sas: Add support for MPI toolbox commands
scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver
scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura
scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST DCMD
scsi: megaraid_sas: Handle sequence JBOD map failure at driver level
scsi: megaraid_sas: Don't send FPIO to RL Bypass queue
scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault
scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout
scsi: megaraid_sas: Call disable_irq from process IRQ poll
scsi: megaraid_sas: Remove few debug counters from IO path
...
21 Jun, 2019
1 commit
-
Add support for Apple's custom "SCSI DMA" chip. This patch doesn't make use
of its DMA capability. Just the PDMA capability is sufficient to improve
sequential read throughput by a factor of 5.Cc: Michael Schmitz
Cc: Joshua Thompson
Cc: Geert Uytterhoeven
Signed-off-by: Finn Thain
Tested-by: Stan Johnson
Tested-by: Michael Schmitz
Acked-by: Geert Uytterhoeven
Signed-off-by: Martin K. Petersen
21 May, 2019
2 commits
-
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:GPL-2.0-only
Signed-off-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman -
Add SPDX license identifiers to all files which:
- Have no license information of any form
- Have EXPORT_.*_SYMBOL_GPL inside which was used in the
initial scan/conversion to ignore the fileThese files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:GPL-2.0-only
Signed-off-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
25 Mar, 2019
4 commits
-
Add a platform clocksource by adapting the existing arch_gettimeoffset
implementation.Signed-off-by: Finn Thain
Acked-by: Linus Walleij
Tested-by: Stan Johnson
Signed-off-by: Geert Uytterhoeven -
The functions that implement arch_gettimeoffset are re-used by
new clocksource drivers in subsequent patches.Signed-off-by: Finn Thain
Acked-by: Linus Walleij
Signed-off-by: Geert Uytterhoeven -
This resolves some bugs that affect VIA timer counter accesses.
Avoid lost interrupts caused by reading the counter low byte register.
Make allowance for the fact that the counter will be decremented to
0xFFFF before being reloaded.Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven -
Some platforms execute their timer handler with the interrupt priority
level set below 6. That means the handler could be interrupted by another
driver and this could lead to re-entry of the timer core.Avoid this by use of local_irq_save/restore for timer interrupt dispatch.
This provides mutual exclusion around the timer interrupt flag access
which is needed later in this series for the clocksource conversion.Reported-by: Thomas Gleixner
Link: http://lkml.kernel.org/r/alpine.DEB.2.21.1811131407120.2697@nanos.tec.linutronix.de
Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven
07 Mar, 2019
1 commit
-
Pull char/misc driver updates from Greg KH:
"Here is the big char/misc driver patch pull request for 5.1-rc1.The largest thing by far is the new habanalabs driver for their AI
accelerator chip. For now it is in the drivers/misc directory but will
probably move to a new directory soon along with other drivers of this
type.Other than that, just the usual set of individual driver updates and
fixes. There's an "odd" merge in here from the DRM tree that they
asked me to do as the MEI driver is starting to interact with the i915
driver, and it needed some coordination. All of those patches have
been properly acked by the relevant subsystem maintainers.All of these have been in linux-next with no reported issues, most for
quite some time"* tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits)
habanalabs: adjust Kconfig to fix build errors
habanalabs: use %px instead of %p in error print
habanalabs: use do_div for 64-bit divisions
intel_th: gth: Fix an off-by-one in output unassigning
habanalabs: fix little-endiancpu conversion warnings
habanalabs: use NULL to initialize array of pointers
habanalabs: fix little-endiancpu conversion warnings
habanalabs: soft-reset device if context-switch fails
habanalabs: print pointer using %p
habanalabs: fix memory leak with CBs with unaligned size
habanalabs: return correct error code on MMU mapping failure
habanalabs: add comments in uapi/misc/habanalabs.h
habanalabs: extend QMAN0 job timeout
habanalabs: set DMA0 completion to SOB 1007
habanalabs: fix validation of WREG32 to DMA completion
habanalabs: fix mmu cache registers init
habanalabs: disable CPU access on timeouts
habanalabs: add MMU DRAM default page mapping
habanalabs: Dissociate RAZWI info from event types
misc/habanalabs: adjust Kconfig to fix build errors
...
22 Jan, 2019
4 commits
-
A multi-platform kernel binary has to decide at run-time how to dispatch
the arch_nvram_ops calls. Add a platform-independent arch_nvram_ops
struct for this, to replace the atari-specific one.Enable CONFIG_HAVE_ARCH_NVRAM_OPS for Macs.
Acked-by: Geert Uytterhoeven
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Signed-off-by: Greg Kroah-Hartman -
PMU-based m68k Macs pre-date PowerMac-style NVRAM. Use the appropriate
PMU commands. Also implement the missing XPRAM accessors for VIA-based
Macs.Acked-by: Geert Uytterhoeven
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Signed-off-by: Greg Kroah-Hartman -
This is intended to improve code style and not affect code behaviour.
Acked-by: Geert Uytterhoeven
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Signed-off-by: Greg Kroah-Hartman -
Adopt the existing *_read_byte and *_write_byte naming convention.
Rename via_pram_readbyte and via_pram_writebyte to avoid confusion.
Adjust calling conventions of mac_pram_* functions to match the
struct nvram_ops methods.Acked-by: Geert Uytterhoeven
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Signed-off-by: Greg Kroah-Hartman
21 Jan, 2019
3 commits
-
The comment says that calling the ROM routine doesn't work. But testing
shows that the 68030 fall-back reset method does work, so just use that.Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven -
According to The Guide To Mac Family Hardware, this is the correct way
to disable the VBL interrupt. The confusing comment here doesn't add any
value so remove it.Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven -
Those Mac models which don't connect their RTC to VIA1 port B probably
have something else connected to those pins. Just leave them the way we
found them. Make the port B setup conditional on via_type, to match the
RTC accessors in arch/m68k/mac/misc.c.Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven
11 Dec, 2018
1 commit
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Use %ptR instead of open coded variant to print content of
struct rtc_time in human readable format.Cc: Geert Uytterhoeven
Cc: linux-m68k
Signed-off-by: Andy Shevchenko
Reviewed-by: Geert Uytterhoeven
Acked-by: Geert Uytterhoeven
Signed-off-by: Alexandre Belloni
08 Oct, 2018
1 commit
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Now that the 68k Mac port has adopted the via-pmu driver, the same RTC
code can be shared between m68k and powerpc. Replace duplicated code in
arch/powerpc and arch/m68k with common RTC accessors for Cuda and PMU.Drop the problematic WARN_ON which was introduced in commit 22db552b50fa
("powerpc/powermac: Fix rtc read/write functions").Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Cc: Geert Uytterhoeven
Cc: Arnd Bergmann
Acked-by: Geert Uytterhoeven
Signed-off-by: Michael Ellerman
31 Aug, 2018
1 commit
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Now that the 68k Mac port has adopted the via-pmu driver, it must decode
the PMU response accordingly otherwise the date and time will be wrong.Fixes: ebd722275f9cfc67 ("macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver")
Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven
18 Aug, 2018
1 commit
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Pull powerpc updates from Michael Ellerman:
"Notable changes:- A fix for a bug in our page table fragment allocator, where a page
table page could be freed and reallocated for something else while
still in use, leading to memory corruption etc. The fix reuses
pt_mm in struct page (x86 only) for a powerpc only refcount.- Fixes to our pkey support. Several are user-visible changes, but
bring us in to line with x86 behaviour and/or fix outright bugs.
Thanks to Florian Weimer for reporting many of these.- A series to improve the hvc driver & related OPAL console code,
which have been seen to cause hardlockups at times. The hvc driver
changes in particular have been in linux-next for ~month.- Increase our MAX_PHYSMEM_BITS to 128TB when SPARSEMEM_VMEMMAP=y.
- Remove Power8 DD1 and Power9 DD1 support, neither chip should be in
use anywhere other than as a paper weight.- An optimised memcmp implementation using Power7-or-later VMX
instructions- Support for barrier_nospec on some NXP CPUs.
- Support for flushing the count cache on context switch on some IBM
CPUs (controlled by firmware), as a Spectre v2 mitigation.- A series to enhance the information we print on unhandled signals
to bring it into line with other arches, including showing the
offending VMA and dumping the instructions around the fault.Thanks to: Aaro Koskinen, Akshay Adiga, Alastair D'Silva, Alexey
Kardashevskiy, Alexey Spirkov, Alistair Popple, Andrew Donnellan,
Aneesh Kumar K.V, Anju T Sudhakar, Arnd Bergmann, Bartosz Golaszewski,
Benjamin Herrenschmidt, Bharat Bhushan, Bjoern Noetel, Boqun Feng,
Breno Leitao, Bryant G. Ly, Camelia Groza, Christophe Leroy, Christoph
Hellwig, Cyril Bur, Dan Carpenter, Daniel Klamt, Darren Stevens, Dave
Young, David Gibson, Diana Craciun, Finn Thain, Florian Weimer,
Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geoff Levand,
Guenter Roeck, Gustavo Romero, Haren Myneni, Hari Bathini, Joel
Stanley, Jonathan Neuschäfer, Kees Cook, Madhavan Srinivasan, Mahesh
Salgaonkar, Markus Elfring, Mathieu Malaterre, Mauro S. M. Rodrigues,
Michael Hanselmann, Michael Neuling, Michael Schmitz, Mukesh Ojha,
Murilo Opsfelder Araujo, Nicholas Piggin, Parth Y Shah, Paul
Mackerras, Paul Menzel, Ram Pai, Randy Dunlap, Rashmica Gupta, Reza
Arbab, Rodrigo R. Galvao, Russell Currey, Sam Bobroff, Scott Wood,
Shilpasri G Bhat, Simon Guo, Souptick Joarder, Stan Johnson, Thiago
Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vasant Hegde, Venkat
Rao, zhong jiang"* tag 'powerpc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (234 commits)
powerpc/mm/book3s/radix: Add mapping statistics
powerpc/uaccess: Enable get_user(u64, *p) on 32-bit
powerpc/mm/hash: Remove unnecessary do { } while(0) loop
powerpc/64s: move machine check SLB flushing to mm/slb.c
powerpc/powernv/idle: Fix build error
powerpc/mm/tlbflush: update the mmu_gather page size while iterating address range
powerpc/mm: remove warning about ‘type’ being set
powerpc/32: Include setup.h header file to fix warnings
powerpc: Move `path` variable inside DEBUG_PROM
powerpc/powermac: Make some functions static
powerpc/powermac: Remove variable x that's never read
cxl: remove a dead branch
powerpc/powermac: Add missing include of header pmac.h
powerpc/kexec: Use common error handling code in setup_new_fdt()
powerpc/xmon: Add address lookup for percpu symbols
powerpc/mm: remove huge_pte_offset_and_shift() prototype
powerpc/lib: Use patch_site to patch copy_32 functions once cache is enabled
powerpc/pseries: Fix endianness while restoring of r3 in MCE handler.
powerpc/fadump: merge adjacent memory ranges to reduce PT_LOAD segements
powerpc/fadump: handle crash memory ranges array index overflow
...
31 Jul, 2018
2 commits
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Now that the PowerMac via-pmu driver supports m68k PowerBooks,
switch over to that driver and remove the via-pmu68k driver.Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Reviewed-by: Geert Uytterhoeven
Acked-by: Geert Uytterhoeven
Signed-off-by: Michael Ellerman -
Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
device found in those models was never supported by this driver.
Attempting to load the driver usually causes a boot hang.Signed-off-by: Finn Thain
Reviewed-by: Michael Schmitz
Acked-by: Geert Uytterhoeven
Signed-off-by: Michael Ellerman
29 Jul, 2018
2 commits
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Commit 397ac99c6cef ("m68k: remove dead timer code") removed set_rtc_mmss()
because it was unused in 2012. However, this was itself the only user of the
mach_set_clock_mmss() callback and the many implementations of that callback,
which are equally unused.This removes all of those as well.
Signed-off-by: Arnd Bergmann
Acked-by: Greg Ungerer
Signed-off-by: Geert Uytterhoeven -
The real-time clock on m68k (and powerpc) mac systems uses an unsigned
32-bit value starting in 1904, which overflows in 2040, about two years
later than everyone else, but this gets wrapped around in the Linux
code in 2038 already because of the deprecated usage of time_t and/or
long in the conversion.Getting rid of the deprecated interfaces makes it work until 2040 as
documented, and it could be easily extended by reinterpreting
the resulting time64_t as a positive number. For the moment, I'm
adding a WARN_ON() that triggers if we encounter a time before 1970
or after 2040 (the two are indistinguishable).This brings it in line with the corresponding code that we have on
powerpc macintosh.Signed-off-by: Arnd Bergmann
[fthain: Adopt __u32 for the union in via_read_time(), consistent with
changes to via_write_time()]
[fthain: Use lower_32_bits() in via_write_time(), consistent with changes
to pmu_write_time() and cuda_write_time()]
[fthain: Have via_read_time() return a time64_t, consistent with changes
to pmu_read_time() and cuda_read_time()]
[fthain: Drop the pointless wraparound conditional in via_read_time()]
Signed-off-by: Finn Thain
Reviewed-by: Arnd Bergmann
[geert: Drop WARN_ON(), as it is reported to trigger on powermac]
Signed-off-by: Geert Uytterhoeven
23 Jul, 2018
1 commit
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I can confirm that mac_scsi PDMA now works on these machines.
This increases sequential read throughput by a factor of 4.5.Signed-off-by: Finn Thain
Signed-off-by: Geert Uytterhoeven
22 May, 2018
1 commit
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The resource size is 0x2000 == end - start + 1.
Therefore end == start + 0x2000 - 1.Cc: Laurent Vivier
Cc: stable@vger.kernel.org # v4.14+
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Acked-by: Laurent Vivier
Signed-off-by: Geert Uytterhoeven