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1 | /* |
2 | * imr.h: Isolated Memory Region API | |
3 | * | |
4 | * Copyright(c) 2013 Intel Corporation. | |
5 | * Copyright(c) 2015 Bryan O'Donoghue <pure.logic@nexus-software.ie> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; version 2 | |
10 | * of the License. | |
11 | */ | |
12 | #ifndef _IMR_H | |
13 | #define _IMR_H | |
14 | ||
15 | #include <linux/types.h> | |
16 | ||
17 | /* | |
18 | * IMR agent access mask bits | |
19 | * See section 12.7.4.7 from quark-x1000-datasheet.pdf for register | |
20 | * definitions. | |
21 | */ | |
22 | #define IMR_ESRAM_FLUSH BIT(31) | |
23 | #define IMR_CPU_SNOOP BIT(30) /* Applicable only to write */ | |
24 | #define IMR_RMU BIT(29) | |
25 | #define IMR_VC1_SAI_ID3 BIT(15) | |
26 | #define IMR_VC1_SAI_ID2 BIT(14) | |
27 | #define IMR_VC1_SAI_ID1 BIT(13) | |
28 | #define IMR_VC1_SAI_ID0 BIT(12) | |
29 | #define IMR_VC0_SAI_ID3 BIT(11) | |
30 | #define IMR_VC0_SAI_ID2 BIT(10) | |
31 | #define IMR_VC0_SAI_ID1 BIT(9) | |
32 | #define IMR_VC0_SAI_ID0 BIT(8) | |
33 | #define IMR_CPU_0 BIT(1) /* SMM mode */ | |
34 | #define IMR_CPU BIT(0) /* Non SMM mode */ | |
35 | #define IMR_ACCESS_NONE 0 | |
36 | ||
37 | /* | |
38 | * Read/Write access-all bits here include some reserved bits | |
39 | * These are the values firmware uses and are accepted by hardware. | |
40 | * The kernel defines read/write access-all in the same way as firmware | |
41 | * in order to have a consistent and crisp definition across firmware, | |
42 | * bootloader and kernel. | |
43 | */ | |
44 | #define IMR_READ_ACCESS_ALL 0xBFFFFFFF | |
45 | #define IMR_WRITE_ACCESS_ALL 0xFFFFFFFF | |
46 | ||
47 | /* Number of IMRs provided by Quark X1000 SoC */ | |
48 | #define QUARK_X1000_IMR_MAX 0x08 | |
49 | #define QUARK_X1000_IMR_REGBASE 0x40 | |
50 | ||
51 | /* IMR alignment bits - only bits 31:10 are checked for IMR validity */ | |
52 | #define IMR_ALIGN 0x400 | |
53 | #define IMR_MASK (IMR_ALIGN - 1) | |
54 | ||
55 | int imr_add_range(phys_addr_t base, size_t size, | |
56 | unsigned int rmask, unsigned int wmask, bool lock); | |
57 | ||
58 | int imr_remove_range(phys_addr_t base, size_t size); | |
59 | ||
60 | #endif /* _IMR_H */ |