58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
#ifndef __MYRI10GE_MCP_GEN_HEADER_H__
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#define __MYRI10GE_MCP_GEN_HEADER_H__
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/* this file define a standard header used as a first entry point to
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* exchange information between firmware/driver and driver. The
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* header structure can be anywhere in the mcp. It will usually be in
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* the .data section, because some fields needs to be initialized at
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* compile time.
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* The 32bit word at offset MX_HEADER_PTR_OFFSET in the mcp must
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* contains the location of the header.
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*
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* Typically a MCP will start with the following:
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* .text
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* .space 52 ! to help catch MEMORY_INT errors
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* bt start ! jump to real code
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* nop
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* .long _gen_mcp_header
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*
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* The source will have a definition like:
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*
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* mcp_gen_header_t gen_mcp_header = {
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* .header_length = sizeof(mcp_gen_header_t),
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* .mcp_type = MCP_TYPE_XXX,
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* .version = "something $Id: mcp_gen_header.h,v 1.2 2006/05/13 10:04:35 bgoglin Exp $",
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* .mcp_globals = (unsigned)&Globals
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* };
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*/
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#define MCP_HEADER_PTR_OFFSET 0x3c
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#define MCP_TYPE_MX 0x4d582020 /* "MX " */
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#define MCP_TYPE_PCIE 0x70636965 /* "PCIE" pcie-only MCP */
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#define MCP_TYPE_ETH 0x45544820 /* "ETH " */
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#define MCP_TYPE_MCP0 0x4d435030 /* "MCP0" */
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struct mcp_gen_header {
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/* the first 4 fields are filled at compile time */
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unsigned header_length;
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unsigned mcp_type;
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char version[128];
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unsigned mcp_globals; /* pointer to mcp-type specific structure */
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/* filled by the MCP at run-time */
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unsigned sram_size;
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unsigned string_specs; /* either the original STRING_SPECS or a superset */
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unsigned string_specs_len;
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/* Fields above this comment are guaranteed to be present.
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*
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* Fields below this comment are extensions added in later versions
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* of this struct, drivers should compare the header_length against
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* offsetof(field) to check wether a given MCP implements them.
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*
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* Never remove any field. Keep everything naturally align.
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*/
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};
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#endif /* __MYRI10GE_MCP_GEN_HEADER_H__ */
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