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: Michael Roth <mdroth@linux.vnet.ibm.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
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@ -464,6 +464,13 @@ static inline void rtas_st(target_ulong phys, int n, uint32_t val)
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stl_be_phys(&address_space_memory, ppc64_phys_to_real(phys + 4*n), val);
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}
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static inline void rtas_st_buffer_direct(target_ulong phys,
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target_ulong phys_len,
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uint8_t *buffer, uint16_t buffer_len)
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{
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cpu_physical_memory_write(ppc64_phys_to_real(phys), buffer,
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MIN(buffer_len, phys_len));
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}
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static inline void rtas_st_buffer(target_ulong phys, target_ulong phys_len,
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uint8_t *buffer, uint16_t buffer_len)
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@ -473,8 +480,7 @@ static inline void rtas_st_buffer(target_ulong phys, target_ulong phys_len,
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}
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stw_be_phys(&address_space_memory,
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ppc64_phys_to_real(phys), buffer_len);
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cpu_physical_memory_write(ppc64_phys_to_real(phys + 2),
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buffer, MIN(buffer_len, phys_len - 2));
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rtas_st_buffer_direct(phys + 2, phys_len - 2, buffer, buffer_len);
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}
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typedef void (*spapr_rtas_fn)(PowerPCCPU *cpu, sPAPREnvironment *spapr,
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