| Bryan O'Donoghue | 28a375d | 2015-01-30 16:29:38 +0000 | [diff] [blame] | 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, |
| Bryan O'Donoghue | c637fa5 | 2016-02-23 01:29:59 +0000 | [diff] [blame] | 56 | unsigned int rmask, unsigned int wmask); |
| Bryan O'Donoghue | 28a375d | 2015-01-30 16:29:38 +0000 | [diff] [blame] | 57 | |
| 58 | int imr_remove_range(phys_addr_t base, size_t size); |
| 59 | |
| 60 | #endif /* _IMR_H */ |