Commit Graph

86761 Commits

Author SHA1 Message Date
Nicholas Piggin
8b7e6b07a4 target/ppc: rework AIL logic in interrupt delivery
The AIL logic is becoming unmanageable spread all over powerpc_excp(),
and it is slated to get even worse with POWER10 support.

Move it all to a new helper function.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Tested-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210501072436.145444-2-npiggin@gmail.com>
[dwg: Corrected tab indenting]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 13:12:02 +10:00
Bruno Larsen (billionai)
7468e2c842 target/ppc: move opcode table logic to translate.c
code motion to remove opcode callback table from
translate_init.c.inc to translate.c in preparation to remove
the #include <translate_init.c.inc> from translate.c. Also created
destroy_ppc_opcodes and removed that logic from ppc_cpu_unrealize

Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Message-Id: <20210429162130.2412-2-bruno.larsen@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Bruno Larsen (billionai)
35a5d74e82 target/ppc: code motion from translate_init.c.inc to gdbstub.c
All the code related to gdb has been moved from translate_init.c.inc
file to the gdbstub.c file, where it makes more sense.

Version 4 fixes the omission of internal.h in gdbstub, mentioned in
<87sg3d2gf5.fsf@linux.ibm.com>, and the extra blank line.

Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Suggested-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20210426184706.48040-1-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Daniel Henrique Barboza
87758fed7a spapr_drc.c: handle hotunplug errors in drc_unisolate_logical()
At this moment, PAPR does not provide a way to report errors during a
device removal operation. This led the pSeries machine to implement
extra mechanisms to try to fallback and recover from an error that might
have happened during the hotunplug in the guest side. This started to
change a bit with commit fe1831eff8 ("spapr_drc.c: use DRC
reconfiguration to cleanup DIMM unplug state"), where one way to
fallback from a memory removal error was introduced.

Around the same time, in [1], the idea of using RTAS set-indicator for
this role was first introduced. The RTAS set-indicator call, when
attempting to UNISOLATE a DRC that is already UNISOLATED or CONFIGURED,
returns RTAS_OK and does nothing else for both QEMU and phyp. This gives
us an opportunity to use this behavior to signal the hypervisor layer
when a device removal errir happens, allowing QEMU/phyp to do a proper
error handling. Using set-indicator to report HP errors isn't strange to
PAPR, as per R1-13.5.3.4-4. of table 13.7 of current PAPR [2]:

"For all DR options: If this is a DR operation that involves the user
insert- ing a DR entity, then if the firmware can determine that the
inserted entity would cause a system disturbance, then the set-indicator
RTAS call must not unisolate the entity and must return an error status
which is unique to the particular error."

A change was proposed to the pSeries Linux kernel to call set-indicator
to move a DRC to 'unisolate' in the case of a hotunplug error in the
guest side [3]. Setting a DRC that is already unisolated or configured to
'unisolate' is a no-op (returns RTAS_OK) for QEMU and also for phyp.
Being a benign change for hypervisors that doesn't care about handling
such errors, we expect the kernel to accept this change at some point.

This patch prepares the pSeries machine for this new kernel feature by
changing drc_unisolate_logical() to handle guest side hotunplug errors.
For CPUs it's a simple matter of setting drc->unplug_requested to 'false',
while for LMBs the process is similar to the rollback that is done in
rtas_ibm_configure_connector().

[1] https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg06395.html
[2] https://openpowerfoundation.org/wp-content/uploads/2020/07/LoPAR-20200611.pdf
[3] https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20210416210216.380291-3-danielhb413@gmail.com/

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210420165100.108368-2-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Daniel Henrique Barboza
b7573092ab spapr.h: increase FDT_MAX_SIZE
Certain SMP topologies stress, e.g. 1 thread/core, 2048 cores and
1 socket, stress the current maximum size of the pSeries FDT:

Calling ibm,client-architecture-support...qemu-system-ppc64: error
creating device tree: (fdt_setprop(fdt, offset,
"ibm,processor-segment-sizes", segs, sizeof(segs))): FDT_ERR_NOSPACE

2048 is the default NR_CPUS value for the pSeries kernel. It's expected
that users will want QEMU to be able to handle this kind of
configuration.

Bumping FDT_MAX_SIZE to 2MB is enough for these setups to be created.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210408204049.221802-3-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Daniel Henrique Barboza
5642e4513e spapr.c: do not use MachineClass::max_cpus to limit CPUs
Up to this patch, 'max_cpus' value is hardcoded to 1024 (commit
6244bb7e58). In theory this patch would simply bump it to 2048, since
it's the default NR_CPUS kernel setting for ppc64 servers nowadays, but
the whole mechanic of MachineClass:max_cpus is flawed for the pSeries
machine. The two supported accelerators, KVM and TCG, can live without
it.

TCG guests don't have a theoretical limit. The user must be free to
emulate as many CPUs as the hardware is capable of. And even if there
were a limit, max_cpus is not the proper way to report it since it's a
common value checked by SMP code in machine_smp_parse() for KVM as well.

For KVM guests, the proper way to limit KVM CPUs is by host
configuration via NR_CPUS, not a QEMU hardcoded value. There is no
technical reason for a pSeries QEMU guest to forcefully stay below
NR_CPUS.

This hardcoded value also disregard hosts that might have a lower
NR_CPUS limit, say 512. In this case, machine.c:machine_smp_parse() will
allow a 1024 value to pass, but then kvm_init() will complain about it
because it will exceed NR_CPUS:

Number of SMP cpus requested (1024) exceeds the maximum cpus supported
by KVM (512)

A better 'max_cpus' value would consider host settings, but
MachineClass::max_cpus is defined well before machine_init() and
kvm_init(). We can't check for KVM limits because it's too soon, so we
end up making a guess.

This patch makes MachineClass:max_cpus settings innocuous by setting it
to INT32_MAX. machine.c:machine_smp_parse() will not fail the
verification based on max_cpus, letting kvm_init() do the checking with
actual host settings. And TCG guests get to do whatever the hardware is
capable of emulating.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210408204049.221802-2-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Ravi Bangoria
a7913d5e3f ppc: Rename current DAWR macros and variables
Power10 is introducing second DAWR. Use real register names (with
suffix 0) from ISA for current macros and variables used by Qemu.

One exception to this is KVM_REG_PPC_DAWR[X]. This is from kernel
uapi header and thus not changed in kernel as well as Qemu.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210412114433.129702-3-ravi.bangoria@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Nicholas Piggin
98a6a36588 target/ppc: POWER10 supports scv
This must have slipped through the cracks between adding POWER10 support
and scv support.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210415054227.1793812-3-npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Nicholas Piggin
9827f20863 target/ppc: Fix POWER9 radix guest HV interrupt AIL behaviour
ISA v3.0 radix guest execution has a quirk in AIL behaviour such that
the LPCR[AIL] value can apply to hypervisor interrupts.

This affects machines that emulate HV=1 mode (i.e., powernv9).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20210415054227.1793812-2-npiggin@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Bin Meng
37337472e7 docs/system: ppc: Add documentation for ppce500 machine
This adds detailed documentation for PowerPC `ppce500` machine,
including the following information:

- Supported devices
- Hardware configuration information
- Boot options
- Running Linux kernel
- Running U-Boot

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Bin Meng
335b638937 roms/u-boot: Bump ppce500 u-boot to v2021.04 to fix broken pci support
When QEMU originally supported the ppce500 machine back in Jan 2014,
it was created with a 1:1 mapping of PCI bus address. Things seemed
to change rapidly that in Nov 2014 with the following QEMU commits:

commit e6b4e5f479 ("PPC: e500: Move CCSR and MMIO space to upper end of address space")

and

commit cb3778a045 ("PPC: e500 pci host: Add support for ATMUs")

the PCI memory and IO physical address were moved to beyond 4 GiB,
but PCI bus address remained below 4 GiB, hence a non-identity
mapping was created. Unfortunately corresponding U-Boot updates
were missed along with the QEMU changes and the U-Boot QEMU ppce500
PCI support has been broken since then, until this issue was fixed
recently in U-Boot mainline v2021.04 release, specifically by the
following U-Boot series:

http://patchwork.ozlabs.org/project/uboot/list/?series=230985&state=*

The cross-compilation toolchain used to build the U-Boot image is:
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/10.1.0/x86_64-gcc-10.1.0-nolibc-powerpc-linux.tar.xz

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Bin Meng
8c8a7ed50c roms/Makefile: Update ppce500 u-boot build directory name
Currently building ppce500 u-boot image results in

  modified:   roms/u-boot (untracked content)

As roms/u-boot/.gitignore indicates, update the build directory
name to build-e500 to eliminate this message.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Vaibhav Jain
53d7d7e2b1 ppc/spapr: Add support for implement support for H_SCM_HEALTH
Add support for H_SCM_HEALTH hcall described at [1] for spapr
nvdimms. This enables guest to detect the 'unarmed' status of a
specific spapr nvdimm identified by its DRC and if its unarmed, mark
the region backed by the nvdimm as read-only.

The patch adds h_scm_health() to handle the H_SCM_HEALTH hcall which
returns two 64-bit bitmaps (health bitmap, health bitmap mask) derived
from 'struct nvdimm->unarmed' member.

Linux kernel side changes to enable handling of 'unarmed' nvdimms for
ppc64 are proposed at [2].

References:
[1] "Hypercall Op-codes (hcalls)"
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/powerpc/papr_hcalls.rst#n220
[2] "powerpc/papr_scm: Mark nvdimm as unarmed if needed during probe"
    https://lore.kernel.org/linux-nvdimm/20210329113103.476760-1-vaibhav@linux.ibm.com/

Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Message-Id: <20210402102128.213943-1-vaibhav@linux.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Alexey Kardashevskiy
4b98e72d97 spapr: Rename RTAS_MAX_ADDR to FDT_MAX_ADDR
SLOF instantiates RTAS since
744a928cce ("spapr: Stop providing RTAS blob")
so the max address applies to the FDT only.

This renames the macro and fixes up the comment.

This should not cause any behavioral change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <20210331025123.29310-1-aik@ozlabs.ru>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
ba7e5ac18e hw/ppc: Add emulation of Genesi/bPlan Pegasos II
Add new machine called pegasos2 emulating the Genesi/bPlan Pegasos II,
a PowerPC board based on the Marvell MV64361 system controller and the
VIA VT8231 integrated south bridge/superio chips. It can run Linux,
AmigaOS and a wide range of MorphOS versions. Currently a firmware ROM
image is needed to boot and only MorphOS has a video driver to produce
graphics output. Linux could work too but distros that supported this
machine don't include usual video drivers so those only run with
serial console for now.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <30cbfb9cbe6f46a1e15a69a75fac45ac39340122.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
dcdf98a901 hw/pci-host: Add emulation of Marvell MV64361 PPC system controller
The Marvell Discovery II aka. MV64361 is a PowerPC system controller
chip that is used on the pegasos2 PPC board. This adds emulation of it
that models the device enough to boot guests on this board. The
mv643xx.h header with register definitions is taken from Linux 4.15.10
only fixing white space errors, removing not needed parts and changing
formatting for QEMU coding style.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <79545ebd03bfe0665b73d2d7cbc74fdf3d62629e.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
f9f0c9e2fa vt82c686: Add emulation of VT8231 south bridge
Add emulation of VT8231 south bridge ISA part based on the similar
VT82C686B but implemented in a separate subclass that holds the
differences while reusing parts that can be shared.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <10abc9f89854e7c980b9731c33d25a2e307e9c4f.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
2e84e107a0 vt82c686: Introduce abstract TYPE_VIA_ISA and base vt82c686b_isa on it
To allow reusing ISA bridge emulation for vt8231_isa move the device
state of vt82c686b_isa emulation in an abstract via_isa class. This
change breaks migration back compatibility but this is not an issue
for Fuloong2E machine which is not versioned or migration supported.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <0cb8fc69c7aaa555589181931b881335fecd2ef3.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
ab74864fed vt82c686: Add VT8231_SUPERIO based on VIA_SUPERIO
The VT8231 south bridge is very similar to VT82C686B but there are
some differences in register addresses and functionality, e.g. the
VT8231 only has one serial port. This commit adds VT8231_SUPERIO
subclass based on the abstract VIA_SUPERIO class to emulate the
superio part of VT8231.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <8108809321f9ecf3fb1aea22ddaeccc7c3a57c8e.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
BALATON Zoltan
f028c2ded2 vt82c686: QOM-ify superio related functionality
Collect superio functionality and its controlling config registers
handling in an abstract VIA_SUPERIO class that is a subclass of
ISA_SUPERIO and put vt82c686b specific parts in a subclass of this
abstract class.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <fbcc8cc8baf83f327612a1ef1c14bcbcdb0e7edb.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Richard Henderson
2da8a6bcdc target/ppc: Validate hflags with CONFIG_DEBUG_TCG
Verify that hflags was updated correctly whenever we change
cpu state that is used by hflags.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-11-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Richard Henderson
75da499733 linux-user/ppc: Fix msr updates for signal handling
In save_user_regs, there are two bugs where we OR in a bit number
instead of the bit, clobbering the low bits of MSR.  However:

The MSR_VR and MSR_SPE bits control the availability of the insns.
If the bits were not already set in MSR, then any attempt to access
those registers would result in SIGILL.

For linux-user, we always initialize MSR to the capabilities
of the cpu.  We *could* add checks vs MSR where we currently
check insn_flags and insn_flags2, but we know they match.

Also, there's a stray cut-and-paste comment in restore.

Then, do not force little-endian binaries into big-endian mode.

Finally, use ppc_store_msr for the update to affect hflags.
Which is the reason none of these bugs were previously noticed.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-10-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Richard Henderson
d764184ddb target/ppc: Remove env->immu_idx and env->dmmu_idx
We weren't recording MSR_GS in hflags, which means that BookE
memory accesses were essentially random vs Guest State.

Instead of adding this bit directly, record the completed mmu
indexes instead.  This makes it obvious that we are recording
exactly the information that we need.

This also means that we can stop directly recording MSR_IR.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-9-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:25 +10:00
Richard Henderson
0e6bac3edb target/ppc: Remove MSR_SA and MSR_AP from hflags
Nothing within the translator -- or anywhere else for that
matter -- checks MSR_SA or MSR_AP on the 602.  This may be
a mistake.  However, for the moment, we need not record these
bits in hflags.

This allows us to simplify HFLAGS_VSX computation by moving
it to overlap with MSR_VSX.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-8-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
f03de3b44b target/ppc: Put LPCR[GTSE] in hflags
Because this bit was not in hflags, the privilege check
for tlb instructions was essentially random.
Recompute hflags when storing to LPCR.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-7-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
f43520e5b2 target/ppc: Create helper_scv
Perform the test against FSCR_SCV at runtime, in the helper.

This means we can remove the incorrect set against SCV in
ppc_tr_init_disas_context and do not need to add an HFLAGS bit.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-6-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
7da31f260d target/ppc: Put dbcr0 single-step bits into hflags
Because these bits were not in hflags, the code generated
for single-stepping on BookE was essentially random.
Recompute hflags when storing to dbcr0.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-5-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
26c55599b8 target/ppc: Reduce env->hflags to uint32_t
It will be stored in tb->flags, which is also uint32_t,
so let's use the correct size.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-4-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
2df4fe7abe target/ppc: Disconnect hflags from MSR
Copying flags directly from msr has drawbacks: (1) msr bits
mean different things per cpu, (2) msr has 64 bits on 64 cpus
while tb->flags has only 32 bits.

Create a enum to define these bits.  Document the origin of each bit
and validate those bits that must match MSR.  This fixes the
truncation of env->hflags to tb->flags, because we no longer
have hflags bits set above bit 31.

Most of the code in ppc_tr_init_disas_context is moved over to
hreg_compute_hflags.  Some of it is simple extractions from msr,
some requires examining other cpu flags.  Anything that is moved
becomes a simple extract from hflags in ppc_tr_init_disas_context.

Several existing bugs are left in ppc_tr_init_disas_context, where
additional changes are required -- to be addressed in future patches.

Remove a broken #if 0 block.

Reported-by: Ivan Warren <ivan@vmfacility.fr>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-3-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
edece45d4a target/ppc: Extract post_load_update_msr
Extract post_load_update_msr to share between cpu_load_old
and cpu_post_load in updating the msr.

Suggested-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210323184340.619757-2-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
e81f17a3f6 hw/ppc/spapr_rtas: Update hflags after setting msr
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-16-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
bd4160bc6a hw/ppc/pnv_core: Update hflags after setting msr
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-15-richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
56ced49760 target/ppc: Fix comment for MSR_FE{0,1}
As per hreg_compute_hflags:

  We 'forget' FE0 & FE1: we'll never generate imprecise exceptions

remove the hflags marker from the respective comments.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-7-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
f7a7b6525c target/ppc: Retain hflags_nmsr only for migration
We have eliminated all normal uses of hflags_nmsr.  We need
not even compute it except when we want to migrate.  Rename
the field to emphasize this.

Remove the fixme comment for migrating access_type.  This value
is only ever used with the current executing instruction, and
is never live when the cpu is halted for migration.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-6-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
da77d2b037 target/ppc: Do not call hreg_compute_mem_idx after ppc_store_msr
In ppc_store_msr we call hreg_compute_hflags, which itself
calls hreg_compute_mem_idx.  Rely on ppc_store_msr to update
everything required by the msr update.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-5-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
dafe299cf0 target/ppc: Properly sync cpu state with new msr in cpu_load_old
Match cpu_post_load in using ppc_store_msr to set all of
the cpu state implied by the value of msr.  Do not restore
hflags or hflags_nmsr, as we recompute them in ppc_store_msr.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-4-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
1828504672 target/ppc: Move 601 hflags adjustment to hreg_compute_hflags
Keep all hflags computation in one place, as this will be
especially important later.

Introduce a new POWERPC_FLAG_HID0_LE bit to indicate when
LE should be taken from HID0.  This appears to be set if
and only if POWERPC_FLAG_RTC_CLK is set, but we're not
short of bits and having both names will avoid confusion.

Note that this was the only user of hflags_nmsr, so we can
perform a straight assignment rather than mask and set.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-3-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Richard Henderson
8a05fd9a22 target/ppc: Move helper_regs.h functions out-of-line
Move the functions to a new file, helper_regs.c.

Note int_helper.c was relying on helper_regs.h to
indirectly include qemu/log.h.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210315184615.1985590-2-richard.henderson@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Philippe Mathieu-Daudé
03b3542ac9 hw/ppc/mac_newworld: Restrict RAM to 2 GiB
On Mac99 and newer machines, the Uninorth PCI host bridge maps
the PCI hole region at 2GiB, so the RAM area beside 2GiB is not
accessible by the CPU. Restrict the memory to 2GiB to avoid
problems such the one reported in the buglink.

Buglink: https://bugs.launchpad.net/qemu/+bug/1922391
Reported-by: Håvard Eidnes <he@NetBSD.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210406084842.2859664-1-f4bug@amsat.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-05-04 11:41:24 +10:00
Peter Maydell
e93d8bcf9d MIPS patches queue
- Fix CACHEE opcode
 - Add missing CP0 checks to nanoMIPS RDPGPR / WRPGPR opcodes
 - Remove isa_get_irq() call in PIIX4 south bridge
 - Add various missing fields to the MIPS CPU migration vmstate
 - Lot of code moved around to allow TCG or KVM only builds
 - Restrict non-virtualized machines to TCG
 - Add KVM mips64el cross-build jobs to gitlab-ci
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Merge remote-tracking branch 'remotes/philmd/tags/mips-20210502' into staging

MIPS patches queue

- Fix CACHEE opcode
- Add missing CP0 checks to nanoMIPS RDPGPR / WRPGPR opcodes
- Remove isa_get_irq() call in PIIX4 south bridge
- Add various missing fields to the MIPS CPU migration vmstate
- Lot of code moved around to allow TCG or KVM only builds
- Restrict non-virtualized machines to TCG
- Add KVM mips64el cross-build jobs to gitlab-ci

# gpg: Signature made Sun 02 May 2021 15:56:51 BST
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/mips-20210502: (36 commits)
  gitlab-ci: Add KVM mips64el cross-build jobs
  hw/mips: Restrict non-virtualized machines to TCG
  target/mips: Move TCG source files under tcg/ sub directory
  target/mips: Move CP0 helpers to sysemu/cp0.c
  target/mips: Move exception management code to exception.c
  target/mips: Move TLB management helpers to tcg/sysemu/tlb_helper.c
  target/mips: Move helper_cache() to tcg/sysemu/special_helper.c
  target/mips: Move Special opcodes to tcg/sysemu/special_helper.c
  target/mips: Restrict CPUMIPSTLBContext::map_address() handlers scope
  target/mips: Move tlb_helper.c to tcg/sysemu/
  target/mips: Restrict mmu_init() to TCG
  target/mips: Move sysemu TCG-specific code to tcg/sysemu/ subfolder
  target/mips: Restrict cpu_mips_get_random() / update_pagemask() to TCG
  target/mips: Move physical addressing code to sysemu/physaddr.c
  target/mips: Move sysemu specific files under sysemu/ subfolder
  target/mips: Move cpu_signal_handler definition around
  target/mips: Add simple user-mode mips_cpu_tlb_fill()
  target/mips: Add simple user-mode mips_cpu_do_interrupt()
  target/mips: Introduce tcg-internal.h for TCG specific declarations
  meson: Introduce meson_user_arch source set for arch-specific user-mode
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-03 12:05:12 +01:00
Philippe Mathieu-Daudé
9197b5d4b5 hw/rx/rx-gdbsim: Do not accept invalid memory size
We check the amount of RAM is enough, warn when it is
not, but if so we neglect to bail out. Fix that by
adding the missing exit() call.

Fixes: bda19d7bb5 ("hw/rx: Add RX GDB simulator")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Message-Id: <20210407223056.1870497-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-03 10:07:41 +02:00
Robert Hoo
56c9f00ef9 docs: More precisely describe memory-backend-*::id's user
'id' of memory-backend-{file,ram} is not only for '-numa''s reference, but
also other parameters like '-device nvdimm'.
More clearly call out this to avoid misinterpretation.

Signed-off-by: Robert Hoo <robert.hu@linux.intel.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1619080922-83527-1-git-send-email-robert.hu@linux.intel.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-03 10:07:41 +02:00
Silvano Cirujano Cuesta
e75941331e scripts: fix generation update-binfmts templates
This patch fixes the update-binfmts templates being used in the script
scripts/qemu-binfmt-conf.sh when the option --debian is used.

Fixed issues are:
- Typo in flag 'credentials' (previously 'credential').
- Missing flags 'preserve' and 'fix_binary'.

Reference: https://manpages.debian.org/buster/binfmt-support/update-binfmts.8.en.html#FORMAT_FILES

Signed-off-by: Silvano Cirujano Cuesta <silvano.cirujano-cuesta@siemens.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210323123457.23747-1-silvano.cirujano-cuesta@siemens.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-03 10:07:41 +02:00
Greg Kurz
a058b89507 docs/system: Document the removal of "compat" property for POWER CPUs
This is just an oversight.

Fixes: f518be3aa3 ("target/ppc: Remove "compat" property of server class POWER CPUs")
Cc: groug@kaod.org
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <161399328834.51902.14269239378658110394.stgit@bahia.lan>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-03 10:07:41 +02:00
Gan Qixin
76d79cf3d5 mc146818rtc: put it into the 'misc' category
The category of the mc146818rtc device is not set, put it into the 'misc'
category.

Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201130083630.2520597-6-ganqixin@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:51 +02:00
Thomas Huth
ee86213aa3 Do not include exec/address-spaces.h if it's not really necessary
Stop including exec/address-spaces.h in files that don't need it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210416171314.2074665-5-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:51 +02:00
Thomas Huth
2068cabd3f Do not include cpu.h if it's not really necessary
Stop including cpu.h in files that don't need it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210416171314.2074665-4-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:51 +02:00
Thomas Huth
ead62c75f6 Do not include hw/boards.h if it's not really necessary
Stop including hw/boards.h in files that don't need it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210416171314.2074665-3-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:51 +02:00
Thomas Huth
4c386f8064 Do not include sysemu/sysemu.h if it's not really necessary
Stop including sysemu/sysemu.h in files that don't need it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210416171314.2074665-2-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:50 +02:00
Thomas Huth
19f4ed3652 hw: Do not include qemu/log.h if it is not necessary
Many files include qemu/log.h without needing it. Remove the superfluous
include statements.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20210328054833.2351597-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:50 +02:00