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spapr-rtas: fix h_rtas parameters reading 

On the real hardware, RTAS is called in real mode and therefore
top 4 bits of the address passed in the call are ignored.
So does the patch.

This converts h_rtas() to use existing rtas_ld() handlers.

This fixed rtas_ld()/rtas_st() to ignore top 4 bits.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexey Kardashevskiy 2013-09-27 18:10:18 +10:00 committed by Alexander Graf
parent dcb861cb88
commit 4fe822e075
2 changed files with 10 additions and 5 deletions
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6
hw/ppc/spapr_hcall.c
View File

@ -521,9 +521,9 @@ static target_ulong h_rtas(PowerPCCPU *cpu, sPAPREnvironment *spapr,
target_ulong opcode, target_ulong *args)
{
target_ulong rtas_r3 = args[0];
uint32_t token = ldl_be_phys(rtas_r3);
uint32_t nargs = ldl_be_phys(rtas_r3 + 4);
uint32_t nret = ldl_be_phys(rtas_r3 + 8);
uint32_t token = rtas_ld(rtas_r3, 0);
uint32_t nargs = rtas_ld(rtas_r3, 1);
uint32_t nret = rtas_ld(rtas_r3, 2);
return spapr_rtas_call(cpu, spapr, token, nargs, rtas_r3 + 12,
nret, rtas_r3 + 12 + 4*nargs);

9
include/hw/ppc/spapr.h
View File

@ -332,14 +332,19 @@ static inline int spapr_allocate_lsi(int hint)
return spapr_allocate_irq(hint, true);
}
static inline uint64_t ppc64_phys_to_real(uint64_t addr)
{
return addr & ~0xF000000000000000ULL;
}
static inline uint32_t rtas_ld(target_ulong phys, int n)
{
return ldl_be_phys(phys + 4*n);
return ldl_be_phys(ppc64_phys_to_real(phys + 4*n));
}
static inline void rtas_st(target_ulong phys, int n, uint32_t val)
{
stl_be_phys(phys + 4*n, val);
stl_be_phys(ppc64_phys_to_real(phys + 4*n), val);
}
typedef void (*spapr_rtas_fn)(PowerPCCPU *cpu, sPAPREnvironment *spapr,