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/* $Id$
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
* Copyright (C) 2000 by Colin Ngam
*/
#ifndef _ASM_SN_NIC_H
#define _ASM_SN_NIC_H
#include <asm/types.h>
#define MCR_DATA(x) ((int) ((x) & 1))
#define MCR_DONE(x) ((x) & 2)
#define MCR_PACK(pulse, sample) ((pulse) << 10 | (sample) << 2)
typedef __psunsigned_t nic_data_t;
typedef int
nic_access_f(nic_data_t data,
int pulse, int sample, int delay);
typedef nic_access_f *nic_access_t;
typedef struct nic_vmce_s *nic_vmce_t;
typedef void nic_vmc_func(devfs_handle_t v);
/*
* PRIVATE data for Dallas NIC
*/
typedef struct nic_state_t {
nic_access_t access;
nic_data_t data;
int last_disc;
int done;
int bit_index;
int disc_marker;
uchar_t bits[64];
} nic_state_t;
/*
* Public interface for Dallas NIC
*
*
* Access Routine
*
* nic_setup requires an access routine that pulses the NIC line for a
* specified duration, samples the NIC line after a specified duration,
* then delays for a third specified duration (for precharge).
*
* This general scheme allows us to access NICs through any medium
* (e.g. hub regs, bridge regs, vector writes, system ctlr commands).
*
* The access routine should return the sample value 0 or 1, or if an
* error occurs, return a negative error code. Negative error codes from
* the access routine will abort the NIC operation and be propagated
* through out of the top-level NIC call.
*/
#define NIC_OK 0
#define NIC_DONE 1
#define NIC_FAIL 2
#define NIC_BAD_CRC 3
#define NIC_NOT_PRESENT 4
#define NIC_REDIR_LOOP 5
#define NIC_PARAM 6
#define NIC_NOMEM 7
uint64_t nic_get_phase_bits(void);
extern int nic_setup(nic_state_t *ns,
nic_access_t access,
nic_data_t data);
extern int nic_next(nic_state_t *ns,
char *serial,
char *family,
char *crc);
extern int nic_read_one_page(nic_state_t *ns,
char *family,
char *serial,
char *crc,
int start,
uchar_t *redirect,
uchar_t *byte);
extern int nic_read_mfg(nic_state_t *ns,
char *family,
char *serial,
char *crc,
uchar_t *pageA,
uchar_t *pageB);
extern int nic_info_get(nic_access_t access,
nic_data_t data,
char *info);
extern int nic_item_info_get(char *buf, char *item, char **item_info);
nic_access_f nic_access_mcr32;
extern char *nic_vertex_info_get(devfs_handle_t v);
extern char *nic_vertex_info_set(nic_access_t access,
nic_data_t data,
devfs_handle_t v);
extern int nic_vertex_info_match(devfs_handle_t vertex,
char *name);
extern char *nic_bridge_vertex_info(devfs_handle_t vertex,
nic_data_t data);
extern char *nic_hq4_vertex_info(devfs_handle_t vertex,
nic_data_t data);
extern char *nic_ioc3_vertex_info(devfs_handle_t vertex,
nic_data_t data,
int32_t *gpcr_s);
extern char *nic_hub_vertex_info(devfs_handle_t vertex);
extern nic_vmce_t nic_vmc_add(char *, nic_vmc_func *);
extern void nic_vmc_del(nic_vmce_t);
#endif /* _ASM_SN_NIC_H */
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