There is no LPES0 in BookE and no MSR_HV.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220128224018.1228062-8-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The SRR1 should be set to the MSR value. There are no diagnostic bits
in the SRR1 for BookE.
Note that this fixes a bug where MSR_GS would be set and Linux would
go into KVM code when there's no KVM guest.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220128224018.1228062-7-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
There is no DSISR or DAR in BookE. Change to ESR and DEAR.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220128224018.1228062-6-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
There's no MSR_HV in BookE.
Also remove 40x code.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220128224018.1228062-5-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Introduce a new powerpc_excp function specific for BookE CPUs. This
commit copies powerpc_excp_legacy verbatim so the next one has a clean
diff.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220128224018.1228062-2-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This CPU was partially removed due to lack of support in 2017 by commit
aef7796057 ("ppc: remove non implemented cpu models").
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220128221611.1221715-1-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 602 was derived from the PowerPC 603, for the gaming market it
seems. It was hardly used and no firmware supporting the CPU could be
found. Drop support.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The migration code will not look at a VMStateDescription's
minimum_version_id_old field unless that VMSD has set the
load_state_old field to something non-NULL. (The purpose of
minimum_version_id_old is to specify what migration version is needed
for the code in the function pointed to by load_state_old to be able
to handle it on incoming migration.)
We have exactly one VMSD which still has a load_state_old,
in the PPC CPU; every other VMSD which sets minimum_version_id_old
is doing so unnecessarily. Delete all the unnecessary ones.
Commit created with:
sed -i '/\.minimum_version_id_old/d' $(git grep -l '\.minimum_version_id_old')
with the one legitimate use then hand-edited back in.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
It missed vmstate_ppc_cpu.
The 74xx does not have alternate/hypervisor Save and Restore
Registers, so we can set SRR0 and SRR1 directly.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-9-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The whole power saving states logic seems to be dependent on HV mode,
which don't exist for 74xx so I'm removing it all and leaving the
abort message.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-8-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Remove the BookE code and add a comment explaining why we need to keep
hypercall support even though this CPU does not have a hypervisor
mode.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-7-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 74xx don't have MSR_HV so all the LPES0 logic can be removed.
Also remove the BookE IRQ code.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-5-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 74xx don't have an MSR_HV.
Also remove 40x and BookE code.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-4-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Differences from the generic powerpc_excp code:
- Not BookE, so some MSR bits are cleared at interrupt dispatch;
- No MSR_HV;
- No power saving states;
- No Hypervisor Emulation Assistance;
- Not 64 bits;
- No System call vectored;
- No Alternate Interrupt Location.
Exceptions used:
POWERPC_EXCP_ALIGN
POWERPC_EXCP_DECR
POWERPC_EXCP_DSI
POWERPC_EXCP_EXTERNAL
POWERPC_EXCP_FPU
POWERPC_EXCP_IABR
POWERPC_EXCP_ISI
POWERPC_EXCP_MCHECK
POWERPC_EXCP_PERFM
POWERPC_EXCP_PROGRAM
POWERPC_EXCP_RESET
POWERPC_EXCP_SMI
POWERPC_EXCP_SYSCALL
POWERPC_EXCP_THERM
POWERPC_EXCP_TRACE
POWERPC_EXCP_VPU
POWERPC_EXCP_VPUA
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-3-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Introduce a new powerpc_excp function specific for PowerPC 74xx
CPUs. This commit copies powerpc_excp_legacy verbatim so the next one
has a clean diff.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20220127201116.1154733-2-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Since this is now BookS only, we can simplify the code a bit and check
has_hv_mode instead of enumerating the exception models. LPES0 does
not make sense if there is no MSR_HV.
Note that QEMU does not support HV mode on 970 and POWER5+ so we don't
set MSR_HV in msr_mask.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220124184605.999353-5-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Differences from the generic powerpc_excp code:
- Not BookE, so some MSR bits are cleared at interrupt dispatch;
- Always uses HV_EMU if the CPU has MSR_HV;
- Exceptions always delivered in 64 bit.
Exceptions used:
POWERPC_EXCP_ALIGN
POWERPC_EXCP_DECR
POWERPC_EXCP_DSEG
POWERPC_EXCP_DSI
POWERPC_EXCP_EXTERNAL
POWERPC_EXCP_FPU
POWERPC_EXCP_FU
POWERPC_EXCP_HDECR
POWERPC_EXCP_HDSI
POWERPC_EXCP_HISI
POWERPC_EXCP_HVIRT
POWERPC_EXCP_HV_EMU
POWERPC_EXCP_HV_FU
POWERPC_EXCP_ISEG
POWERPC_EXCP_ISI
POWERPC_EXCP_MAINT
POWERPC_EXCP_MCHECK
POWERPC_EXCP_PERFM
POWERPC_EXCP_PROGRAM
POWERPC_EXCP_RESET
POWERPC_EXCP_SDOOR_HV
POWERPC_EXCP_SYSCALL
POWERPC_EXCP_SYSCALL_VECTORED
POWERPC_EXCP_THERM
POWERPC_EXCP_TRACE
POWERPC_EXCP_VPU
POWERPC_EXCP_VPUA
POWERPC_EXCP_VSXU
POWERPC_EXCP_HV_MAINT
POWERPC_EXCP_SDOOR
(I added the two above that were not being considered. They used to be
"Invalid exception". Now they become "Unimplemented exception" which
is more accurate.)
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220124184605.999353-3-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Introduce a new powerpc_excp function specific for BookS CPUs. This
commit copies powerpc_excp_legacy verbatim so the next one has a clean
diff.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220124184605.999353-2-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 405 Program Interrupt does not set SRR1 with any diagnostic bits,
just a clean copy of the MSR.
We're using the BookE Exception Syndrome Register which is different
from the 405.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[ clg: restored SPR_40x_ESR settings ]
Message-Id: <20220118184448.852996-14-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 405 ISI does not set SRR1 with any exception syndrome bits, only a
clean copy of the MSR.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[ clg : Fixed removal which was done in the wrong routine ]
Message-Id: <20220118184448.852996-13-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 405 has no DSISR or DAR, so convert the trace entry to
use ESR and DEAR instead.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
[ clg : - changed registers to ESR and DEAR.
- updated commit log ]
Message-Id: <20220118184448.852996-12-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The current Debug exception dispatch is the BookE one, so it is
different from the 405. We effectively don't support the 405 Debug
exception.
This patch removes the BookE code and moves the DEBUG into the "not
implemented" block.
Note that there is in theory a functional change here since we now
abort when a Debug exception happens. However, given how it was never
implemented, I don't believe this to have ever been dispatched for the
405.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220118184448.852996-11-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
There is no DSISR in the 405. It uses DEAR which we already set
earlier at ppc_cpu_do_unaligned_access.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au
Message-Id: <20220118184448.852996-10-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
405 has no MSR_HV and EPR is BookE only so we can remove it all.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220118184448.852996-8-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
powerpc_excp_40x applies only to the 405, so remove HV code and
references to BookE.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220118184448.852996-7-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
In powerpc_excp_40x the Critical exception is now for 405 only, so we
can remove the BookE and G2 blocks.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220118184448.852996-6-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Differences from the generic powerpc_excp code:
- Not BookE, so some MSR bits are cleared at interrupt dispatch;
- No MSR_HV or MSR_LE;
- No power saving states;
- No Hypervisor Emulation Assistance;
- Not 64 bits;
- No System call vectored;
- No Interrupts Little Endian;
- No Alternate Interrupt Location.
Exceptions used:
POWERPC_EXCP_ALIGN
POWERPC_EXCP_CRITICAL
POWERPC_EXCP_DEBUG
POWERPC_EXCP_DSI
POWERPC_EXCP_DTLB
POWERPC_EXCP_EXTERNAL
POWERPC_EXCP_FIT
POWERPC_EXCP_ISI
POWERPC_EXCP_ITLB
POWERPC_EXCP_MCHECK
POWERPC_EXCP_PIT
POWERPC_EXCP_PROGRAM
POWERPC_EXCP_SYSCALL
POWERPC_EXCP_WDT
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220118184448.852996-5-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Introduce a new powerpc_excp function specific for 40x CPUs. This
commit copies powerpc_excp_legacy verbatim so the next one has a clean
diff.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220118184448.852996-4-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 405 MSR has the Machine Check Enable bit. We're making use of it
when dispatching Machine Check, so add the bit to the msr_mask.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220118184448.852996-3-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Bit 13 is the Wait State Enable bit. Give it its proper name.
As far as I can see we don't do anything with MSR_POW for the 405, so
this change has no effect.
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220118184448.852996-2-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Commit cd0c6f4735 did not take into account 405 CPUs when adding
support to batching of TCG tlb flushes. Set the TLB_NEED_LOCAL_FLUSH
flag when the SPR_40x_PID is set or a TLB updated.
Cc: Thomas Huth <thuth@redhat.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Fixes: cd0c6f4735 ("ppc: Do some batching of TCG tlb flushes")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220113180352.1234512-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
POWERPC_MMU_BOOKE is not a mask and should not be tested with a
bitwise AND operator.
It went unnoticed because it only impacts the 601 CPU implementation
for which we don't have a known firmware image.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220124081609.3672341-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
cpu_interrupt_exittb() was introduced by commit 044897ef4a
("target/ppc: Fix system lockups caused by interrupt_request state
corruption") as a way to wrap cpu_interrupt() helper in BQL.
After that, commit 6d38666a89 ("ppc: Ignore the CPU_INTERRUPT_EXITTB
interrupt with KVM") added a condition to skip this interrupt if we're
running with KVM.
Problem is that the change made by the above commit, testing for
!kvm_enabled() at the start of cpu_interrupt_exittb():
static inline void cpu_interrupt_exittb(CPUState *cs)
{
if (!kvm_enabled()) {
return;
}
(... do cpu_interrupt(cs, CPU_INTERRUPT_EXITTB) ...)
is doing the opposite of what it intended to do. This will return
immediately if not kvm_enabled(), i.e. it's a emulated CPU, and if
kvm_enabled() it will proceed to fire CPU_INTERRUPT_EXITTB.
Fix the 'skip KVM' condition so the function is a no-op when
kvm_enabled().
CC: Greg Kurz <groug@kaod.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/809
Fixes: 6d38666a89 ("ppc: Ignore the CPU_INTERRUPT_EXITTB interrupt with KVM")
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20220121160841.9102-1-danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Book-E architecture does not set the error code in 31:27 bits
of SRR1, but instead uses these bits for custom fields such
as GS (Guest Supervisor).
Wrongly setting these fields will result in QEMU crashes
when attempting to execute not executable code due to the attempts
to use Guest Supervisor mode.
Cc: "Cédric Le Goater" <clg@kaod.org>
Cc: Daniel Henrique Barboza <danielhb413@gmail.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Greg Kurz <groug@kaod.org>
Cc: qemu-ppc@nongnu.org
Cc: qemu-devel@nongnu.org
Cc: qemu-stable@nongnu.org
Signed-off-by: Vitaly Cheptsov <cheptsov@ispras.ru>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220121093107.15478-1-cheptsov@ispras.ru>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
After a TLB miss exception, GPRs 0-3 must be restored on rfi.
This is managed by hreg_store_msr() which is called by do_rfi()
However, hreg_store_msr() does it if MSR[TGPR] is unset in the
passed MSR value.
The problem is that do_rfi() is given the content of SRR1 as
the value to be set in MSR, but TGPR bit is not part of SRR1
and that bit is used for something else and is sometimes set
to 1, leading to hreg_store_msr() not restoring GPRs.
So, do the same way as for POW bit, force clearing it.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Cedric Le Goater <clg@kaod.org>
Cc: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220120103824.239573-1-christophe.leroy@csgroup.eu>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The 7448 CPU is an evolution of the PowerPC 7447A and the last of the
G4 family. Change its family to reflect correctly its features. This
fixes Linux boot.
Cc: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220117092555.1616512-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Commit c8f49e6b93 ("target/ppc: remove 401/403 CPUs") left a few
things behind.
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220117091541.1615807-1-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20220118104150.1899661-3-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This breaks migration compatibility from (very) old versions of
QEMU. This should not be a problem for the pseries machine for which
migration is only supported on recent QEMUs ( > 2.x). There is no
clear status on what is supported or not for the other machines. Let's
move forward and remove the .load_state_old handler.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220118104150.1899661-2-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
We use the endianness of interrupts to determine which endianness to
use for the guest kernel memory dump. For machines that support HILE
(powernv8 and up) we have been always generating big endian dump
files.
This patch uses the HILE support recently added to
ppc_interrupts_little_endian to fix the endianness of the dumps for
powernv machines.
Here are two dumps created at different moments:
$ file skiboot.dump
skiboot.dump: ELF 64-bit MSB core file, 64-bit PowerPC ...
$ file kernel.dump
kernel.dump: ELF 64-bit LSB core file, 64-bit PowerPC ...
Suggested-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220107222601.4101511-9-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Next patches will split powerpc_excp in multiple family specific
handlers. This patch adds a wrapper to make the transition clearer.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220107222601.4101511-8-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
The ppc_interrupts_little_endian function is now suitable for
determining the endianness of interrupts for all CPUs.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20220107222601.4101511-7-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
