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 37 #ifndef SPAPR_OVEC_H 38 #define SPAPR_OVEC_H 39 40 #include "cpu.h" 41 #include "migration/vmstate.h" 42 43 typedef struct SpaprOptionVector SpaprOptionVector; 44 45 #define OV_BIT(byte, bit) ((byte - 1) * BITS_PER_BYTE + bit) 46 47 /* option vector 1 */ 48 #define OV1_PPC_3_00 OV_BIT(3, 0) /* guest supports PowerPC 3.00? */ 49 50 /* option vector 5 */ 51 #define OV5_DRCONF_MEMORY OV_BIT(2, 2) 52 #define OV5_FORM1_AFFINITY OV_BIT(5, 0) 53 #define OV5_HP_EVT OV_BIT(6, 5) 54 #define OV5_HPT_RESIZE OV_BIT(6, 7) 55 #define OV5_DRMEM_V2 OV_BIT(22, 0) 56 #define OV5_XIVE_BOTH OV_BIT(23, 0) 57 #define OV5_XIVE_EXPLOIT OV_BIT(23, 1) /* 1=exploitation 0=legacy */ 58 59 /* ISA 3.00 MMU features: */ 60 #define OV5_MMU_BOTH OV_BIT(24, 0) /* Radix and hash */ 61 #define OV5_MMU_RADIX_300 OV_BIT(24, 1) /* 1=Radix only, 0=Hash only */ 62 #define OV5_MMU_RADIX_GTSE OV_BIT(26, 1) /* Radix GTSE */ 63 64 /* interfaces */ 65 SpaprOptionVector *spapr_ovec_new(void); 66 SpaprOptionVector *spapr_ovec_clone(SpaprOptionVector *ov_orig); 67 void spapr_ovec_intersect(SpaprOptionVector *ov, 68 SpaprOptionVector *ov1, 69 SpaprOptionVector *ov2); 70 bool spapr_ovec_diff(SpaprOptionVector *ov, 71 SpaprOptionVector *ov_old, 72 SpaprOptionVector *ov_new); 73 void spapr_ovec_cleanup(SpaprOptionVector *ov); 74 void spapr_ovec_set(SpaprOptionVector *ov, long bitnr); 75 void spapr_ovec_clear(SpaprOptionVector *ov, long bitnr); 76 bool spapr_ovec_test(SpaprOptionVector *ov, long bitnr); 77 SpaprOptionVector *spapr_ovec_parse_vector(target_ulong table_addr, int vector); 78 int spapr_ovec_populate_dt(void *fdt, int fdt_offset, 79 SpaprOptionVector *ov, const char *name); 80 81 /* migration */ 82 extern const VMStateDescription vmstate_spapr_ovec; 83 84 #endif /* SPAPR_OVEC_H */ 85