Commit ab316865 authored by Michael Roth's avatar Michael Roth Committed by Alexander Graf
Browse files

spapr: add rtas_st_buffer_direct() helper 



This is similar to the existing rtas_st_buffer(), but for cases
where the guest is not expecting a length-encoded byte array.
Namely, for calls where a "work area" buffer is used to pass
around arbitrary fields/data.

Signed-off-by: default avatarMichael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 886445a6

include/hw/ppc/spapr.h

+8 −2
Original line number Diff line number Diff line
@@ -464,6 +464,13 @@ static inline void rtas_st(target_ulong phys, int n, uint32_t val) 
    stl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n), val);

}



static inline void rtas_st_buffer_direct(target_ulong phys,

                                         target_ulong phys_len,

                                         uint8_t *buffer, uint16_t buffer_len)

{

    cpu_physical_memory_write(ppc64_phys_to_real(phys), buffer,

                              MIN(buffer_len, phys_len));

}



static inline void rtas_st_buffer(target_ulong phys, target_ulong phys_len,

                                  uint8_t *buffer, uint16_t buffer_len)
@@ -473,8 +480,7 @@ static inline void rtas_st_buffer(target_ulong phys, target_ulong phys_len, 
    }

    stw_be_phys(&address_space_memory,

                ppc64_phys_to_real(phys), buffer_len);

    cpu_physical_memory_write(ppc64_phys_to_real(phys + 2),

                              buffer, MIN(buffer_len, phys_len - 2));

    rtas_st_buffer_direct(phys + 2, phys_len - 2, buffer, buffer_len);

}



typedef void (*spapr_rtas_fn)(PowerPCCPU *cpu, sPAPREnvironment *spapr,