1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __SPARC_MMAN_H__
3 #define __SPARC_MMAN_H__
4
5 #include <uapi/asm/mman.h>
6
7 #ifndef __ASSEMBLY__
8 #define arch_mmap_check(addr,len,flags) sparc_
9 int sparc_mmap_check(unsigned long addr, unsig
10
11 #ifdef CONFIG_SPARC64
12 #include <asm/adi_64.h>
13
14 static inline void ipi_set_tstate_mcde(void *a
15 {
16 struct mm_struct *mm = arg;
17
18 /* Set TSTATE_MCDE for the task using
19 * enabled on if the task is running.
20 * automatically at the next context s
21 */
22 if (current->mm == mm) {
23 struct pt_regs *regs;
24
25 regs = task_pt_regs(current);
26 regs->tstate |= TSTATE_MCDE;
27 }
28 }
29
30 #define arch_calc_vm_prot_bits(prot, pkey) spa
31 static inline unsigned long sparc_calc_vm_prot
32 {
33 if (adi_capable() && (prot & PROT_ADI)
34 struct pt_regs *regs;
35
36 if (!current->mm->context.adi)
37 regs = task_pt_regs(cu
38 regs->tstate |= TSTATE
39 current->mm->context.a
40 on_each_cpu_mask(mm_cp
41 ipi_s
42 }
43 return VM_SPARC_ADI;
44 } else {
45 return 0;
46 }
47 }
48
49 #define arch_validate_prot(prot, addr) sparc_v
50 static inline int sparc_validate_prot(unsigned
51 {
52 if (prot & ~(PROT_READ | PROT_WRITE |
53 return 0;
54 return 1;
55 }
56
57 #define arch_validate_flags(vm_flags) arch_val
58 /* arch_validate_flags() - Ensure combination
59 * VMA.
60 */
61 static inline bool arch_validate_flags(unsigne
62 {
63 /* If ADI is being enabled on this VMA
64 * capability on the platform and ensu
65 * for ADI
66 */
67 if (vm_flags & VM_SPARC_ADI) {
68 if (!adi_capable())
69 return false;
70
71 /* ADI can not be enabled on P
72 if (vm_flags & (VM_PFNMAP | VM
73 return false;
74
75 /* Mergeable pages can become
76 * if ADI is enabled on them e
77 * have identical data on them
78 * because ADI enabled pages w
79 * data may still not have ide
80 * tags on them. Disallow ADI
81 * pages.
82 */
83 if (vm_flags & VM_MERGEABLE)
84 return false;
85 }
86 return true;
87 }
88 #endif /* CONFIG_SPARC64 */
89
90 #endif /* __ASSEMBLY__ */
91 #endif /* __SPARC_MMAN_H__ */
92
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