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1 | /** @file\r |
2 | This file contains the definination for host controller memory\r | |
3 | management routines.\r | |
4 | \r | |
5 | Copyright (c) 2013-2015 Intel Corporation.\r | |
6 | \r | |
c9f231d0 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
9b6bbcdb MK |
8 | \r |
9 | **/\r | |
10 | \r | |
11 | #ifndef _USB_HC_MEM_H_\r | |
12 | #define _USB_HC_MEM_H_\r | |
13 | \r | |
14 | #define USB_HC_BIT(a) ((UINTN)(1 << (a)))\r | |
15 | \r | |
16 | #define USB_HC_BIT_IS_SET(Data, Bit) \\r | |
17 | ((BOOLEAN)(((Data) & USB_HC_BIT(Bit)) == USB_HC_BIT(Bit)))\r | |
18 | \r | |
19 | #define USB_HC_HIGH_32BIT(Addr64) \\r | |
20 | ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0XFFFFFFFF))\r | |
21 | \r | |
22 | typedef struct _USBHC_MEM_BLOCK USBHC_MEM_BLOCK;\r | |
23 | struct _USBHC_MEM_BLOCK {\r | |
24 | UINT8 *Bits; // Bit array to record which unit is allocated\r | |
25 | UINTN BitsLen;\r | |
26 | UINT8 *Buf;\r | |
27 | UINT8 *BufHost;\r | |
28 | UINTN BufLen; // Memory size in bytes\r | |
29 | VOID *Mapping;\r | |
30 | USBHC_MEM_BLOCK *Next;\r | |
31 | };\r | |
32 | \r | |
33 | //\r | |
34 | // USBHC_MEM_POOL is used to manage the memory used by USB\r | |
35 | // host controller. EHCI requires the control memory and transfer\r | |
36 | // data to be on the same 4G memory.\r | |
37 | //\r | |
38 | typedef struct _USBHC_MEM_POOL {\r | |
39 | BOOLEAN Check4G;\r | |
40 | UINT32 Which4G;\r | |
41 | USBHC_MEM_BLOCK *Head;\r | |
42 | } USBHC_MEM_POOL;\r | |
43 | \r | |
44 | //\r | |
45 | // Memory allocation unit, must be 2^n, n>4\r | |
46 | //\r | |
47 | #define USBHC_MEM_UNIT 64\r | |
48 | \r | |
49 | #define USBHC_MEM_UNIT_MASK (USBHC_MEM_UNIT - 1)\r | |
50 | #define USBHC_MEM_DEFAULT_PAGES 16\r | |
51 | \r | |
52 | #define USBHC_MEM_ROUND(Len) (((Len) + USBHC_MEM_UNIT_MASK) & (~USBHC_MEM_UNIT_MASK))\r | |
53 | \r | |
54 | //\r | |
55 | // Advance the byte and bit to the next bit, adjust byte accordingly.\r | |
56 | //\r | |
57 | #define NEXT_BIT(Byte, Bit) \\r | |
58 | do { \\r | |
59 | (Bit)++; \\r | |
60 | if ((Bit) > 7) { \\r | |
61 | (Byte)++; \\r | |
62 | (Bit) = 0; \\r | |
63 | } \\r | |
64 | } while (0)\r | |
65 | \r | |
66 | \r | |
67 | \r | |
68 | /**\r | |
69 | Initialize the memory management pool for the host controller.\r | |
70 | \r | |
71 | @param PciIo The PciIo that can be used to access the host controller.\r | |
72 | @param Check4G Whether the host controller requires allocated memory\r | |
73 | from one 4G address space.\r | |
74 | @param Which4G The 4G memory area each memory allocated should be from.\r | |
75 | \r | |
76 | @retval EFI_SUCCESS The memory pool is initialized.\r | |
77 | @retval EFI_OUT_OF_RESOURCE Fail to init the memory pool.\r | |
78 | \r | |
79 | **/\r | |
80 | USBHC_MEM_POOL *\r | |
81 | UsbHcInitMemPool (\r | |
82 | IN BOOLEAN Check4G,\r | |
83 | IN UINT32 Which4G\r | |
84 | );\r | |
85 | \r | |
86 | \r | |
87 | /**\r | |
88 | Release the memory management pool.\r | |
89 | \r | |
90 | @param Pool The USB memory pool to free.\r | |
91 | \r | |
92 | @retval EFI_SUCCESS The memory pool is freed.\r | |
93 | @retval EFI_DEVICE_ERROR Failed to free the memory pool.\r | |
94 | \r | |
95 | **/\r | |
96 | EFI_STATUS\r | |
97 | UsbHcFreeMemPool (\r | |
98 | IN USBHC_MEM_POOL *Pool\r | |
99 | );\r | |
100 | \r | |
101 | \r | |
102 | /**\r | |
103 | Allocate some memory from the host controller's memory pool\r | |
104 | which can be used to communicate with host controller.\r | |
105 | \r | |
106 | @param Pool The host controller's memory pool.\r | |
107 | @param Size Size of the memory to allocate.\r | |
108 | \r | |
109 | @return The allocated memory or NULL.\r | |
110 | \r | |
111 | **/\r | |
112 | VOID *\r | |
113 | UsbHcAllocateMem (\r | |
114 | IN USBHC_MEM_POOL *Pool,\r | |
115 | IN UINTN Size\r | |
116 | );\r | |
117 | \r | |
118 | \r | |
119 | /**\r | |
120 | Free the allocated memory back to the memory pool.\r | |
121 | \r | |
122 | @param Pool The memory pool of the host controller.\r | |
123 | @param Mem The memory to free.\r | |
124 | @param Size The size of the memory to free.\r | |
125 | \r | |
126 | **/\r | |
127 | VOID\r | |
128 | UsbHcFreeMem (\r | |
129 | IN USBHC_MEM_POOL *Pool,\r | |
130 | IN VOID *Mem,\r | |
131 | IN UINTN Size\r | |
132 | );\r | |
133 | \r | |
134 | #endif\r |