On 18.02.2013, at 16:00, Erlon Cruz wrote:
> From: Erlon Cruz <erlon.c...@br.flextronics.com>
>
> This h_call is useful for DLPAR in future amongst other things. Given an index
> it fetches the corresponding PTE stored in the htab.
>
> Signed-off-by: Erlon Cruz <erlon.c...@br.flextronics.com>
Thanks, applied to ppc-next.
Alex
> ---
> hw/spapr_hcall.c | 31 +++++++++++++++++++++++++++++++
> 1 file changed, 31 insertions(+)
>
> diff --git a/hw/spapr_hcall.c b/hw/spapr_hcall.c
> index 2889742..56394a1 100644
> --- a/hw/spapr_hcall.c
> +++ b/hw/spapr_hcall.c
> @@ -323,6 +323,36 @@ static target_ulong h_protect(PowerPCCPU *cpu,
> sPAPREnvironment *spapr,
> return H_SUCCESS;
> }
>
> +static target_ulong h_read(PowerPCCPU *cpu, sPAPREnvironment *spapr,
> + target_ulong opcode, target_ulong *args)
> +{
> + CPUPPCState *env = &cpu->env;
> + target_ulong flags = args[0];
> + target_ulong pte_index = args[1];
> + uint8_t *hpte;
> + int i, ridx, n_entries = 1;
> +
> + if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
> + return H_PARAMETER;
> + }
> +
> + if (flags & H_READ_4) {
> + /* Clear the two low order bits */
> + pte_index &= ~(3ULL);
> + n_entries = 4;
> + }
> +
> + hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
> +
> + for (i = 0, ridx = 0; i < n_entries; i++) {
> + args[ridx++] = ldq_p(hpte);
> + args[ridx++] = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
> + hpte += HASH_PTE_SIZE_64;
> + }
> +
> + return H_SUCCESS;
> +}
> +
> static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPREnvironment *spapr,
> target_ulong opcode, target_ulong *args)
> {
> @@ -714,6 +744,7 @@ static void hypercall_register_types(void)
> spapr_register_hypercall(H_ENTER, h_enter);
> spapr_register_hypercall(H_REMOVE, h_remove);
> spapr_register_hypercall(H_PROTECT, h_protect);
> + spapr_register_hypercall(H_READ, h_read);
>
> /* hcall-bulk */
> spapr_register_hypercall(H_BULK_REMOVE, h_bulk_remove);
> --
> 1.7.9.5
>
