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8#ifndef _ASM_POWERPC_LMB_H
9#define _ASM_POWERPC_LMB_H
10
11#include <linux/sched.h>
12
13struct drmem_lmb {
14 u64 base_addr;
15 u32 drc_index;
16 u32 aa_index;
17 u32 flags;
18};
19
20struct drmem_lmb_info {
21 struct drmem_lmb *lmbs;
22 int n_lmbs;
23 u64 lmb_size;
24};
25
26extern struct drmem_lmb_info *drmem_info;
27
28static inline struct drmem_lmb *drmem_lmb_next(struct drmem_lmb *lmb,
29 const struct drmem_lmb *start)
30{
31
32
33
34
35
36 if (((++lmb - start) % 16) == 0)
37 cond_resched();
38
39 return lmb;
40}
41
42#define for_each_drmem_lmb_in_range(lmb, start, end) \
43 for ((lmb) = (start); (lmb) < (end); lmb = drmem_lmb_next(lmb, start))
44
45#define for_each_drmem_lmb(lmb) \
46 for_each_drmem_lmb_in_range((lmb), \
47 &drmem_info->lmbs[0], \
48 &drmem_info->lmbs[drmem_info->n_lmbs])
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56
57struct of_drconf_cell_v1 {
58 __be64 base_addr;
59 __be32 drc_index;
60 __be32 reserved;
61 __be32 aa_index;
62 __be32 flags;
63};
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68
69
70struct of_drconf_cell_v2 {
71 u32 seq_lmbs;
72 u64 base_addr;
73 u32 drc_index;
74 u32 aa_index;
75 u32 flags;
76} __packed;
77
78#define DRCONF_MEM_ASSIGNED 0x00000008
79#define DRCONF_MEM_AI_INVALID 0x00000040
80#define DRCONF_MEM_RESERVED 0x00000080
81#define DRCONF_MEM_HOTREMOVABLE 0x00000100
82
83static inline u64 drmem_lmb_size(void)
84{
85 return drmem_info->lmb_size;
86}
87
88#define DRMEM_LMB_RESERVED 0x80000000
89
90static inline void drmem_mark_lmb_reserved(struct drmem_lmb *lmb)
91{
92 lmb->flags |= DRMEM_LMB_RESERVED;
93}
94
95static inline void drmem_remove_lmb_reservation(struct drmem_lmb *lmb)
96{
97 lmb->flags &= ~DRMEM_LMB_RESERVED;
98}
99
100static inline bool drmem_lmb_reserved(struct drmem_lmb *lmb)
101{
102 return lmb->flags & DRMEM_LMB_RESERVED;
103}
104
105u64 drmem_lmb_memory_max(void);
106int walk_drmem_lmbs(struct device_node *dn, void *data,
107 int (*func)(struct drmem_lmb *, const __be32 **, void *));
108int drmem_update_dt(void);
109
110#ifdef CONFIG_PPC_PSERIES
111int __init
112walk_drmem_lmbs_early(unsigned long node, void *data,
113 int (*func)(struct drmem_lmb *, const __be32 **, void *));
114#endif
115
116static inline void invalidate_lmb_associativity_index(struct drmem_lmb *lmb)
117{
118 lmb->aa_index = 0xffffffff;
119}
120
121#endif
122