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