]>
git.proxmox.com Git - mirror_edk2.git/blob - MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.h
3 This file contains the definination for host controller memory management routines.
5 Copyright (c) 2007 - 2009, Intel Corporation
6 All rights reserved. This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
16 #ifndef _EFI_EHCI_MEM_H_
17 #define _EFI_EHCI_MEM_H_
19 #define USB_HC_BIT(a) ((UINTN)(1 << (a)))
21 #define USB_HC_BIT_IS_SET(Data, Bit) \
22 ((BOOLEAN)(((Data) & USB_HC_BIT(Bit)) == USB_HC_BIT(Bit)))
24 #define USB_HC_HIGH_32BIT(Addr64) \
25 ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0XFFFFFFFF))
27 typedef struct _USBHC_MEM_BLOCK
{
28 UINT8
*Bits
; // Bit array to record which unit is allocated
32 UINTN BufLen
; // Memory size in bytes
34 struct _USBHC_MEM_BLOCK
*Next
;
38 // USBHC_MEM_POOL is used to manage the memory used by USB
39 // host controller. EHCI requires the control memory and transfer
40 // data to be on the same 4G memory.
42 typedef struct _USBHC_MEM_POOL
{
43 EFI_PCI_IO_PROTOCOL
*PciIo
;
46 USBHC_MEM_BLOCK
*Head
;
50 USBHC_MEM_UNIT
= 64, // Memory allocation unit, must be 2^n, n>4
52 USBHC_MEM_UNIT_MASK
= USBHC_MEM_UNIT
- 1,
53 USBHC_MEM_DEFAULT_PAGES
= 16
54 } USBHC_MEM_UNIT_DATA
;
56 #define USBHC_MEM_ROUND(Len) (((Len) + USBHC_MEM_UNIT_MASK) & (~USBHC_MEM_UNIT_MASK))
59 // Advance the byte and bit to the next bit, adjust byte accordingly.
61 #define NEXT_BIT(Byte, Bit) \
73 Initialize the memory management pool for the host controller.
75 @param PciIo The PciIo that can be used to access the host controller.
76 @param Check4G Whether the host controller requires allocated memory
77 from one 4G address space.
78 @param Which4G The 4G memory area each memory allocated should be from.
80 @retval EFI_SUCCESS The memory pool is initialized.
81 @retval EFI_OUT_OF_RESOURCE Fail to init the memory pool.
86 IN EFI_PCI_IO_PROTOCOL
*PciIo
,
93 Release the memory management pool.
95 @param Pool The USB memory pool to free.
97 @retval EFI_SUCCESS The memory pool is freed.
98 @retval EFI_DEVICE_ERROR Failed to free the memory pool.
103 IN USBHC_MEM_POOL
*Pool
108 Allocate some memory from the host controller's memory pool
109 which can be used to communicate with host controller.
111 @param Pool The host controller's memory pool.
112 @param Size Size of the memory to allocate.
114 @return The allocated memory or NULL.
119 IN USBHC_MEM_POOL
*Pool
,
125 Free the allocated memory back to the memory pool.
127 @param Pool The memory pool of the host controller.
128 @param Mem The memory to free.
129 @param Size The size of the memory to free.
134 IN USBHC_MEM_POOL
*Pool
,
140 Get the pci memory address according to the allocated host memory address.
142 @param Pool The memory pool of the host controller.
143 @param Mem The memory to free.
144 @param Size The size of the memory to free.
146 @return the pci memory address
149 UsbHcGetPciAddressForHostMem (
150 IN USBHC_MEM_POOL
*Pool
,