Commit ccd531b9 authored by Suraj Jitindar Singh's avatar Suraj Jitindar Singh Committed by David Gibson
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target/ppc: Add ibm,processor-radix-AP-encodings for TCG 



The ibm,processor-radix-AP-encodings device tree property of the cpu node
is used to specify the radix mode supported page sizes of the processor
to the guest os. Contained in the top 3 bits of the msb is the actual
page size (AP) encoding associated with the corresponding radix mode
supported page size. Add this property for a TCG guest, note the TCG code
is capable of translating any format so just add the 4 default page sizes.

The ibm,processor-radix-AP-encodings device tree property is defined as:
One to n cells in ascending order of radix mode supported page sizes
encoded as BE ints (32bit on ppc) in the form:
0bxxxyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
- 0bxxx -> AP encoding
- 0byyyyyyyyyyyyyyyyyyyyyyyyyyyyy -> supported page size encoded as a shift

Signed-off-by: default avatarSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent c88fa6dd

target/ppc/translate_init.c

+20 −0
Original line number Diff line number Diff line
@@ -8808,6 +8808,25 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data) 
    pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr;

}



#ifdef CONFIG_SOFTMMU

/*

 * Radix pg sizes and AP encodings for dt node ibm,processor-radix-AP-encodings

 * Encoded as array of int_32s in the form:

 *  0bxxxyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

 *  x -> AP encoding

 *  y -> radix mode supported page size (encoded as a shift)

 */

static struct ppc_radix_page_info POWER9_radix_page_info = {

    .count = 4,

    .entries = {

        0x0000000c, /*  4K - enc: 0x0 */

        0xa0000010, /* 64K - enc: 0x5 */

        0x20000015, /*  2M - enc: 0x1 */

        0x4000001e  /*  1G - enc: 0x2 */

    }

};

#endif /* CONFIG_SOFTMMU */



static void init_proc_POWER9(CPUPPCState *env)

{

    /* Common Registers */
@@ -8959,6 +8978,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data) 
    pcc->handle_mmu_fault = ppc64_v3_handle_mmu_fault;

    /* segment page size remain the same */

    pcc->sps = &POWER7_POWER8_sps;

    pcc->radix_page_info = &POWER9_radix_page_info;

#endif

    pcc->excp_model = POWERPC_EXCP_POWER8;

    pcc->bus_model = PPC_FLAGS_INPUT_POWER7;