2 * QEMU SPAPR Option/Architecture Vector Definitions
4 * Each architecture option is organized/documented by the following
5 * in LoPAPR 1.1, Table 244:
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
11 * where each vector entry can be one or more bytes.
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
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
28 * Copyright IBM Corp. 2016
31 * Michael Roth <mdroth@linux.vnet.ibm.com>
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.
40 #include "migration/vmstate.h"
42 typedef struct sPAPROptionVector sPAPROptionVector
;
44 #define OV_BIT(byte, bit) ((byte - 1) * BITS_PER_BYTE + bit)
47 #define OV5_DRCONF_MEMORY OV_BIT(2, 2)
48 #define OV5_FORM1_AFFINITY OV_BIT(5, 0)
49 #define OV5_HP_EVT OV_BIT(6, 5)
52 sPAPROptionVector
*spapr_ovec_new(void);
53 sPAPROptionVector
*spapr_ovec_clone(sPAPROptionVector
*ov_orig
);
54 void spapr_ovec_intersect(sPAPROptionVector
*ov
,
55 sPAPROptionVector
*ov1
,
56 sPAPROptionVector
*ov2
);
57 bool spapr_ovec_diff(sPAPROptionVector
*ov
,
58 sPAPROptionVector
*ov_old
,
59 sPAPROptionVector
*ov_new
);
60 void spapr_ovec_cleanup(sPAPROptionVector
*ov
);
61 void spapr_ovec_set(sPAPROptionVector
*ov
, long bitnr
);
62 void spapr_ovec_clear(sPAPROptionVector
*ov
, long bitnr
);
63 bool spapr_ovec_test(sPAPROptionVector
*ov
, long bitnr
);
64 sPAPROptionVector
*spapr_ovec_parse_vector(target_ulong table_addr
, int vector
);
65 int spapr_ovec_populate_dt(void *fdt
, int fdt_offset
,
66 sPAPROptionVector
*ov
, const char *name
);
69 extern const VMStateDescription vmstate_spapr_ovec
;
71 #endif /* !defined (_SPAPR_OVEC_H) */