LXR qemu/include/hw/ppc/spapr

   1/*
   2 * QEMU SPAPR Option/Architecture Vector Definitions
   3 *
   4 * Each architecture option is organized/documented by the following
   5 * in LoPAPR 1.1, Table 244:
   6 *
   7 *   <vector number>: the bit-vector in which the option is located
   8 *   <vector byte>: the byte offset of the vector entry
   9 *   <vector bit>: the bit offset within the vector entry
  10 *
  11 * where each vector entry can be one or more bytes.
  12 *
  13 * Firmware expects a somewhat literal encoding of this bit-vector
  14 * structure, where each entry is stored in little-endian so that the
  15 * byte ordering reflects that of the documentation, but where each bit
  16 * offset is from "left-to-right" in the traditional representation of
  17 * a byte value where the MSB is the left-most bit. Thus, each
  18 * individual byte encodes the option bits in reverse order of the
  19 * documented bit.
  20 *
  21 * These definitions/helpers attempt to abstract away this internal
  22 * representation so that we can define/set/test for individual option
  23 * bits using only the documented values. This is done mainly by relying
  24 * on a bitmap to approximate the documented "bit-vector" structure and
  25 * handling conversations to-from the internal representation under the
  26 * covers.
  27 *
  28 * Copyright IBM Corp. 2016
  29 *
  30 * Authors:
  31 *  Michael Roth      <mdroth@linux.vnet.ibm.com>
  32 *
  33 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  34 * See the COPYING file in the top-level directory.
  35 */
  36#ifndef _SPAPR_OVEC_H
  37#define _SPAPR_OVEC_H
  38
  39#include "cpu.h"
  40#include "migration/vmstate.h"
  41
  42typedef struct sPAPROptionVector sPAPROptionVector;
  43
  44#define OV_BIT(byte, bit) ((byte - 1) * BITS_PER_BYTE + bit)
  45
  46/* option vector 1 */
  47#define OV1_PPC_3_00            OV_BIT(3, 0) /* guest supports PowerPC 3.00? */
  48
  49/* option vector 5 */
  50#define OV5_DRCONF_MEMORY       OV_BIT(2, 2)
  51#define OV5_FORM1_AFFINITY      OV_BIT(5, 0)
  52#define OV5_HP_EVT              OV_BIT(6, 5)
  53#define OV5_HPT_RESIZE          OV_BIT(6, 7)
  54#define OV5_XIVE_BOTH           OV_BIT(23, 0)
  55#define OV5_XIVE_EXPLOIT        OV_BIT(23, 1) /* 1=exploitation 0=legacy */
  56
  57/* ISA 3.00 MMU features: */
  58#define OV5_MMU_BOTH            OV_BIT(24, 0) /* Radix and hash */
  59#define OV5_MMU_RADIX_300       OV_BIT(24, 1) /* 1=Radix only, 0=Hash only */
  60#define OV5_MMU_RADIX_GTSE      OV_BIT(26, 1) /* Radix GTSE */
  61
  62/* interfaces */
  63sPAPROptionVector *spapr_ovec_new(void);
  64sPAPROptionVector *spapr_ovec_clone(sPAPROptionVector *ov_orig);
  65void spapr_ovec_intersect(sPAPROptionVector *ov,
  66                          sPAPROptionVector *ov1,
  67                          sPAPROptionVector *ov2);
  68bool spapr_ovec_diff(sPAPROptionVector *ov,
  69                     sPAPROptionVector *ov_old,
  70                     sPAPROptionVector *ov_new);
  71void spapr_ovec_cleanup(sPAPROptionVector *ov);
  72void spapr_ovec_set(sPAPROptionVector *ov, long bitnr);
  73void spapr_ovec_clear(sPAPROptionVector *ov, long bitnr);
  74bool spapr_ovec_test(sPAPROptionVector *ov, long bitnr);
  75sPAPROptionVector *spapr_ovec_parse_vector(target_ulong table_addr, int vector);
  76int spapr_ovec_populate_dt(void *fdt, int fdt_offset,
  77                           sPAPROptionVector *ov, const char *name);
  78
  79/* migration */
  80extern const VMStateDescription vmstate_spapr_ovec;
  81
  82#endif /* !defined (_SPAPR_OVEC_H) */
  83