/** @file\r
- This file contains two sets of callback routines for undi3.0 and undi3.1.\r
+ This file contains the callback routines for undi3.1.\r
the callback routines for Undi3.1 have an extra parameter UniqueId which\r
stores the interface context for the NIC that snp is trying to talk.\r
\r
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
#include "Snp.h"\r
\r
-//\r
-// Global variables\r
-// these 2 global variables are used only for 3.0 undi. we could not place\r
-// them in the snp structure because we will not know which snp structure\r
-// in the callback context!\r
-//\r
-BOOLEAN mInitializeLock = TRUE;\r
-EFI_LOCK mLock;\r
-\r
-//\r
-// End Global variables\r
-//\r
-extern EFI_PCI_IO_PROTOCOL *mPciIo;\r
-\r
-/**\r
- Convert a virtual or CPU address provided by SNP to a physical or device\r
- address.\r
-\r
- This is a callback routine supplied to UNDI at undi_start time. Since EFI uses\r
- the identical mapping, this routine returns the physical address same as the\r
- virtual address for most of the addresses. an address above 4GB cannot\r
- generally be used as a device address, it needs to be mapped to a lower\r
- physical address. This routine does not call the map routine itself, but it\r
- assumes that the mapping was done at the time of providing the address to\r
- UNDI. This routine just looks up the address in a map table (which is the v2p\r
- structure chain).\r
-\r
- @param CpuAddr Virtual address.\r
- @param DeviceAddrPtr Pointer to the physical address, or 0 in case of any\r
- error.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SnpUndi32CallbackV2p30 (\r
- IN UINT64 CpuAddr,\r
- IN OUT UINT64 DeviceAddrPtr\r
- )\r
-{\r
- V2P *V2p;\r
- //\r
- // Do nothing if virtual address is zero or physical pointer is NULL.\r
- // No need to map if the virtual address is within 4GB limit since\r
- // EFI uses identical mapping\r
- //\r
- if ((CpuAddr == 0) || (DeviceAddrPtr == 0)) {\r
- DEBUG ((EFI_D_NET, "\nv2p: Null virtual address or physical pointer.\n"));\r
- return ;\r
- }\r
-\r
- if (CpuAddr < FOUR_GIGABYTES) {\r
- *(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;\r
- return ;\r
- }\r
- //\r
- // SNP creates a vaddr tp paddr mapping at the time of calling undi with any\r
- // big address, this callback routine just looks up in the v2p list and\r
- // returns the physical address for any given virtual address.\r
- //\r
- if (FindV2p (&V2p, (VOID *) (UINTN) CpuAddr) != EFI_SUCCESS) {\r
- *(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;\r
- } else {\r
- *(UINT64 *) (UINTN) DeviceAddrPtr = V2p->PhysicalAddress;\r
- }\r
-}\r
-\r
-/**\r
- Acquire or release a lock of an exclusive access to a critical section of the\r
- code/data.\r
-\r
- This is a callback routine supplied to UNDI at undi_start time.\r
-\r
- @param Enable Non-zero indicates acquire; Zero indicates release.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SnpUndi32CallbackBlock30 (\r
- IN UINT32 Enable\r
- )\r
-{\r
- //\r
- // tcpip was calling snp at tpl_notify and if we acquire a lock that was\r
- // created at a lower level (TPL_CALLBACK) it gives an assert!\r
- //\r
- if (mInitializeLock) {\r
- EfiInitializeLock (&mLock, TPL_NOTIFY);\r
- mInitializeLock = FALSE;\r
- }\r
-\r
- if (Enable != 0) {\r
- EfiAcquireLock (&mLock);\r
- } else {\r
- EfiReleaseLock (&mLock);\r
- }\r
-}\r
-\r
-/**\r
- Delay MicroSeconds of micro seconds.\r
-\r
- This is a callback routine supplied to UNDI at undi_start time.\r
-\r
- @param MicroSeconds Number of micro seconds to pause, ususlly multiple of 10.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SnpUndi32CallbackDelay30 (\r
- IN UINT64 MicroSeconds\r
- )\r
-{\r
- if (MicroSeconds != 0) {\r
- gBS->Stall ((UINTN) MicroSeconds);\r
- }\r
-}\r
-\r
-/**\r
- IO routine for UNDI.\r
-\r
- This is a callback routine supplied to UNDI at undi_start time. This is not\r
- currently being used by UNDI3.0 because Undi3.0 uses io/mem offsets relative\r
- to the beginning of the device io/mem address and so it needs to use the\r
- PCI_IO_FUNCTION that abstracts the start of the device's io/mem addresses.\r
- Since SNP cannot retrive the context of the undi3.0 interface it cannot use\r
- the PCI_IO_FUNCTION that specific for that NIC and uses one global IO\r
- functions structure, this does not work. This however works fine for EFI1.0\r
- Undis because they use absolute addresses for io/mem access.\r
-\r
- @param ReadOrWrite Indicates read or write, IO or Memory.\r
- @param NumBytes Number of bytes to read or write.\r
- @param Address IO or memory address to read from or write to.\r
- @param BufferAddr Memory location to read into or that contains the bytes to\r
- write.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SnpUndi32CallbackMemio30 (\r
- IN UINT8 ReadOrWrite,\r
- IN UINT8 NumBytes,\r
- IN UINT64 Address,\r
- IN OUT UINT64 BufferAddr\r
- )\r
-{\r
- EFI_PCI_IO_PROTOCOL_WIDTH Width;\r
-\r
- switch (NumBytes) {\r
- case 2:\r
- Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 1;\r
- break;\r
-\r
- case 4:\r
- Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 2;\r
- break;\r
-\r
- case 8:\r
- Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 3;\r
- break;\r
-\r
- default:\r
- Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 0;\r
- }\r
-\r
- switch (ReadOrWrite) {\r
- case PXE_IO_READ:\r
- mPciIo->Io.Read (\r
- mPciIo,\r
- Width,\r
- 1, // BAR 1, IO base address\r
- Address,\r
- 1, // count\r
- (VOID *) (UINTN) BufferAddr\r
- );\r
- break;\r
-\r
- case PXE_IO_WRITE:\r
- mPciIo->Io.Write (\r
- mPciIo,\r
- Width,\r
- 1, // BAR 1, IO base address\r
- Address,\r
- 1, // count\r
- (VOID *) (UINTN) BufferAddr\r
- );\r
- break;\r
-\r
- case PXE_MEM_READ:\r
- mPciIo->Mem.Read (\r
- mPciIo,\r
- Width,\r
- 0, // BAR 0, Memory base address\r
- Address,\r
- 1, // count\r
- (VOID *) (UINTN) BufferAddr\r
- );\r
- break;\r
-\r
- case PXE_MEM_WRITE:\r
- mPciIo->Mem.Write (\r
- mPciIo,\r
- Width,\r
- 0, // BAR 0, Memory base address\r
- Address,\r
- 1, // count\r
- (VOID *) (UINTN) BufferAddr\r
- );\r
- break;\r
- }\r
-\r
- return ;\r
-}\r
-\r
/**\r
Acquire or release a lock of the exclusive access to a critical section of the\r
code/data.\r
projects / mirror_edk2.git / blobdiff