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1 | /* |
2 | * Copyright 2010-2017 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License, version 2, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * Disclaimer: The codes contained in these modules may be specific to | |
14 | * the Intel Software Development Platform codenamed Knights Ferry, | |
15 | * and the Intel product codenamed Knights Corner, and are not backward | |
16 | * compatible with other Intel products. Additionally, Intel will NOT | |
17 | * support the codes or instruction set in future products. | |
18 | * | |
19 | * Intel offers no warranty of any kind regarding the code. This code is | |
20 | * licensed on an "AS IS" basis and Intel is not obligated to provide | |
21 | * any support, assistance, installation, training, or other services | |
22 | * of any kind. Intel is also not obligated to provide any updates, | |
23 | * enhancements or extensions. Intel specifically disclaims any warranty | |
24 | * of merchantability, non-infringement, fitness for any particular | |
25 | * purpose, and any other warranty. | |
26 | * | |
27 | * Further, Intel disclaims all liability of any kind, including but | |
28 | * not limited to liability for infringement of any proprietary rights, | |
29 | * relating to the use of the code, even if Intel is notified of the | |
30 | * possibility of such liability. Except as expressly stated in an Intel | |
31 | * license agreement provided with this code and agreed upon with Intel, | |
32 | * no license, express or implied, by estoppel or otherwise, to any | |
33 | * intellectual property rights is granted herein. | |
34 | */ | |
35 | ||
36 | #ifndef MIC_SMPT_H | |
37 | #define MIC_SMPT_H | |
38 | ||
39 | #include <linux/errno.h> | |
40 | #include <linux/hardirq.h> | |
41 | #include <linux/types.h> | |
42 | #include <linux/capability.h> | |
43 | #include <linux/slab.h> | |
44 | #include <linux/string.h> | |
45 | #include <linux/gfp.h> | |
46 | #include <linux/vmalloc.h> | |
47 | #include <asm/io.h> | |
48 | #include <linux/kernel.h> | |
49 | #include <linux/mm_types.h> | |
50 | #include <linux/jiffies.h> | |
51 | #include <linux/timer.h> | |
52 | #include <linux/irqflags.h> | |
53 | #include <linux/time.h> | |
54 | #include <linux/spinlock.h> | |
55 | #include <linux/mutex.h> | |
56 | #include <linux/semaphore.h> | |
57 | #include <linux/kthread.h> | |
58 | #include <linux/sched.h> | |
59 | #include <linux/delay.h> | |
60 | #include <linux/wait.h> | |
61 | #include <asm/bug.h> | |
62 | #include <linux/pci.h> | |
63 | #include <linux/device.h> | |
64 | #include <linux/fs.h> | |
65 | #include <linux/list.h> | |
66 | #include <linux/workqueue.h> | |
67 | #include <linux/interrupt.h> | |
68 | #include <asm/atomic.h> | |
69 | #include <linux/netdevice.h> | |
70 | #include <linux/debugfs.h> | |
71 | ||
72 | #define MAX_BOARD_SUPPORTED 256 | |
73 | ||
74 | #define SNOOP_ON (0 << 0) | |
75 | #define SNOOP_OFF (1 << 0) | |
76 | #define NUM_SMPT_REGISTERS 32 | |
77 | #define NUM_SMPT_ENTRIES_IN_USE 32 | |
78 | #define SMPT_MASK 0x1F | |
79 | #define MIC_SYSTEM_PAGE_SHIFT 34ULL | |
80 | #define MIC_SYSTEM_PAGE_MASK ((1ULL << MIC_SYSTEM_PAGE_SHIFT) - 1ULL) | |
81 | ||
82 | struct _mic_ctx_t; | |
83 | struct pci_dev; | |
84 | ||
85 | typedef struct mic_smpt { | |
86 | dma_addr_t dma_addr; | |
87 | int64_t ref_count; | |
88 | } mic_smpt_t; | |
89 | ||
90 | ||
91 | /* Sbox Smpt Reg Bits: | |
92 | * Bits 31:2 Host address | |
93 | * Bits 1 RSVD | |
94 | * Bits 0 No snoop | |
95 | */ | |
96 | #define BUILD_SMPT(NO_SNOOP, HOST_ADDR) \ | |
97 | (uint32_t)(((((HOST_ADDR)<< 2) & (~0x03)) | ((NO_SNOOP) & (0x01)))) | |
98 | ||
99 | bool is_syspa(dma_addr_t hostmic_pa); | |
100 | ||
101 | dma_addr_t mic_map(int bid, dma_addr_t dma_addr, size_t size); | |
102 | void mic_unmap(int bid, dma_addr_t dma_addr, size_t size); | |
103 | ||
104 | dma_addr_t mic_map_single(int bid, struct pci_dev *hwdev, void *p, size_t size); | |
105 | void mic_unmap_single(int bid, struct pci_dev *hwdev, dma_addr_t mic_addr, | |
106 | size_t size); | |
107 | ||
108 | dma_addr_t mic_ctx_map_single(struct _mic_ctx_t *mic_ctx, void *p, size_t size); | |
109 | void mic_ctx_unmap_single(struct _mic_ctx_t *mic_ctx, dma_addr_t dma_addr, | |
110 | size_t size); | |
111 | ||
112 | dma_addr_t mic_to_dma_addr(int bid, dma_addr_t mic_addr); | |
113 | void mic_smpt_set(volatile void *mm_sbox, uint64_t dma_addr, uint64_t index); | |
114 | ||
115 | static inline | |
116 | bool mic_map_error(dma_addr_t mic_addr) | |
117 | { | |
118 | return !mic_addr; | |
119 | } | |
120 | #endif // MIC_SMPT_H |