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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_XTALK_XWIDGET_H__
#define __ASM_SN_XTALK_XWIDGET_H__
/*
* xwidget.h - generic crosstalk widget header file
*/
#include <asm/sn/xtalk/xtalk.h>
#if LANGUAGE_C
#include <asm/sn/cdl.h>
#endif /* LANGUAGE_C */
#ifdef LITTLE_ENDIAN
#define WIDGET_ID 0x00
#define WIDGET_STATUS 0x08
#define WIDGET_ERR_UPPER_ADDR 0x10
#define WIDGET_ERR_LOWER_ADDR 0x18
#define WIDGET_CONTROL 0x20
#define WIDGET_REQ_TIMEOUT 0x28
#define WIDGET_INTDEST_UPPER_ADDR 0x30
#define WIDGET_INTDEST_LOWER_ADDR 0x38
#define WIDGET_ERR_CMD_WORD 0x40
#define WIDGET_LLP_CFG 0x48
#define WIDGET_TFLUSH 0x50
#else /* !LITTLE_ENDIAN */
#define WIDGET_ID 0x04
#define WIDGET_STATUS 0x0c
#define WIDGET_ERR_UPPER_ADDR 0x14
#define WIDGET_ERR_LOWER_ADDR 0x1c
#define WIDGET_CONTROL 0x24
#define WIDGET_REQ_TIMEOUT 0x2c
#define WIDGET_INTDEST_UPPER_ADDR 0x34
#define WIDGET_INTDEST_LOWER_ADDR 0x3c
#define WIDGET_ERR_CMD_WORD 0x44
#define WIDGET_LLP_CFG 0x4c
#define WIDGET_TFLUSH 0x54
#endif
/* WIDGET_ID */
#define WIDGET_REV_NUM 0xf0000000
#define WIDGET_PART_NUM 0x0ffff000
#define WIDGET_MFG_NUM 0x00000ffe
#define WIDGET_REV_NUM_SHFT 28
#define WIDGET_PART_NUM_SHFT 12
#define WIDGET_MFG_NUM_SHFT 1
#define XWIDGET_PART_NUM(widgetid) (((widgetid) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT)
#define XWIDGET_REV_NUM(widgetid) (((widgetid) & WIDGET_REV_NUM) >> WIDGET_REV_NUM_SHFT)
#define XWIDGET_MFG_NUM(widgetid) (((widgetid) & WIDGET_MFG_NUM) >> WIDGET_MFG_NUM_SHFT)
#define XWIDGET_PART_REV_NUM(widgetid) ((XWIDGET_PART_NUM(widgetid) << 4) | \
XWIDGET_REV_NUM(widgetid))
/* WIDGET_STATUS */
#define WIDGET_LLP_REC_CNT 0xff000000
#define WIDGET_LLP_TX_CNT 0x00ff0000
#define WIDGET_PENDING 0x0000001f
/* WIDGET_ERR_UPPER_ADDR */
#define WIDGET_ERR_UPPER_ADDR_ONLY 0x0000ffff
/* WIDGET_CONTROL */
#define WIDGET_F_BAD_PKT 0x00010000
#define WIDGET_LLP_XBAR_CRD 0x0000f000
#define WIDGET_LLP_XBAR_CRD_SHFT 12
#define WIDGET_CLR_RLLP_CNT 0x00000800
#define WIDGET_CLR_TLLP_CNT 0x00000400
#define WIDGET_SYS_END 0x00000200
#define WIDGET_MAX_TRANS 0x000001f0
#define WIDGET_PCI_SPEED 0x00000030
#define WIDGET_PCI_SPEED_SHFT 4
#define WIDGET_PCI_SPEED_33MHZ 0
#define WIDGET_PCI_SPEED_66MHZ 1
#define WIDGET_WIDGET_ID 0x0000000f
/* WIDGET_INTDEST_UPPER_ADDR */
#define WIDGET_INT_VECTOR 0xff000000
#define WIDGET_INT_VECTOR_SHFT 24
#define WIDGET_TARGET_ID 0x000f0000
#define WIDGET_TARGET_ID_SHFT 16
#define WIDGET_UPP_ADDR 0x0000ffff
/* WIDGET_ERR_CMD_WORD */
#define WIDGET_DIDN 0xf0000000
#define WIDGET_SIDN 0x0f000000
#define WIDGET_PACTYP 0x00f00000
#define WIDGET_TNUM 0x000f8000
#define WIDGET_COHERENT 0x00004000
#define WIDGET_DS 0x00003000
#define WIDGET_GBR 0x00000800
#define WIDGET_VBPM 0x00000400
#define WIDGET_ERROR 0x00000200
#define WIDGET_BARRIER 0x00000100
/* WIDGET_LLP_CFG */
#define WIDGET_LLP_MAXRETRY 0x03ff0000
#define WIDGET_LLP_MAXRETRY_SHFT 16
#define WIDGET_LLP_NULLTIMEOUT 0x0000fc00
#define WIDGET_LLP_NULLTIMEOUT_SHFT 10
#define WIDGET_LLP_MAXBURST 0x000003ff
#define WIDGET_LLP_MAXBURST_SHFT 0
/*
* according to the crosstalk spec, only 32-bits access to the widget
* configuration registers is allowed. some widgets may allow 64-bits
* access but software should not depend on it. registers beyond the
* widget target flush register are widget dependent thus will not be
* defined here
*/
#if _LANGUAGE_C
typedef uint32_t widgetreg_t;
/* widget configuration registers */
typedef volatile struct widget_cfg {
#ifdef LITTLE_ENDIAN
/*
* we access these through synergy unswizzled space, so the address
* gets twiddled (i.e. references to 0x4 actually go to 0x0 and vv.)
* That's why we put the register first and filler second.
*/
widgetreg_t w_id; /* 0x04 */
widgetreg_t w_pad_0; /* 0x00 */
widgetreg_t w_status; /* 0x0c */
widgetreg_t w_pad_1; /* 0x08 */
widgetreg_t w_err_upper_addr; /* 0x14 */
widgetreg_t w_pad_2; /* 0x10 */
widgetreg_t w_err_lower_addr; /* 0x1c */
widgetreg_t w_pad_3; /* 0x18 */
widgetreg_t w_control; /* 0x24 */
widgetreg_t w_pad_4; /* 0x20 */
widgetreg_t w_req_timeout; /* 0x2c */
widgetreg_t w_pad_5; /* 0x28 */
widgetreg_t w_intdest_upper_addr; /* 0x34 */
widgetreg_t w_pad_6; /* 0x30 */
widgetreg_t w_intdest_lower_addr; /* 0x3c */
widgetreg_t w_pad_7; /* 0x38 */
widgetreg_t w_err_cmd_word; /* 0x44 */
widgetreg_t w_pad_8; /* 0x40 */
widgetreg_t w_llp_cfg; /* 0x4c */
widgetreg_t w_pad_9; /* 0x48 */
widgetreg_t w_tflush; /* 0x54 */
widgetreg_t w_pad_10; /* 0x50 */
#else
widgetreg_t w_pad_0; /* 0x00 */
widgetreg_t w_id; /* 0x04 */
widgetreg_t w_pad_1; /* 0x08 */
widgetreg_t w_status; /* 0x0c */
widgetreg_t w_pad_2; /* 0x10 */
widgetreg_t w_err_upper_addr; /* 0x14 */
widgetreg_t w_pad_3; /* 0x18 */
widgetreg_t w_err_lower_addr; /* 0x1c */
widgetreg_t w_pad_4; /* 0x20 */
widgetreg_t w_control; /* 0x24 */
widgetreg_t w_pad_5; /* 0x28 */
widgetreg_t w_req_timeout; /* 0x2c */
widgetreg_t w_pad_6; /* 0x30 */
widgetreg_t w_intdest_upper_addr; /* 0x34 */
widgetreg_t w_pad_7; /* 0x38 */
widgetreg_t w_intdest_lower_addr; /* 0x3c */
widgetreg_t w_pad_8; /* 0x40 */
widgetreg_t w_err_cmd_word; /* 0x44 */
widgetreg_t w_pad_9; /* 0x48 */
widgetreg_t w_llp_cfg; /* 0x4c */
widgetreg_t w_pad_10; /* 0x50 */
widgetreg_t w_tflush; /* 0x54 */
#endif /* LITTLE_ENDIAN */
} widget_cfg_t;
#ifdef LITTLE_ENDIAN
typedef struct {
unsigned other:8;
unsigned bo:1;
unsigned error:1;
unsigned vbpm:1;
unsigned gbr:1;
unsigned ds:2;
unsigned ct:1;
unsigned tnum:5;
unsigned pactyp:4;
unsigned sidn:4;
unsigned didn:4;
} w_err_cmd_word_f;
#else
typedef struct {
unsigned didn:4;
unsigned sidn:4;
unsigned pactyp:4;
unsigned tnum:5;
unsigned ct:1;
unsigned ds:2;
unsigned gbr:1;
unsigned vbpm:1;
unsigned error:1;
unsigned bo:1;
unsigned other:8;
} w_err_cmd_word_f;
#endif
#ifdef LITTLE_ENDIAN
typedef union {
w_err_cmd_word_f f;
widgetreg_t r;
} w_err_cmd_word_u;
#else
typedef union {
widgetreg_t r;
w_err_cmd_word_f f;
} w_err_cmd_word_u;
#endif
/* IO widget initialization function */
typedef struct xwidget_info_s *xwidget_info_t;
/*
* Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.
*/
#ifdef LITTLE_ENDIAN
typedef struct xwidget_hwid_s {
xwidget_mfg_num_t mfg_num;
xwidget_rev_num_t rev_num;
xwidget_part_num_t part_num;
} *xwidget_hwid_t;
#else
typedef struct xwidget_hwid_s {
xwidget_part_num_t part_num;
xwidget_rev_num_t rev_num;
xwidget_mfg_num_t mfg_num;
} *xwidget_hwid_t;
#endif
/*
* Returns 1 if a driver that handles devices described by hwid1 is able
* to manage a device with hardwareid hwid2. NOTE: We don't check rev
* numbers at all.
*/
#define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \
(((hwid1)->part_num == (hwid2)->part_num) && \
(((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
((hwid1)->mfg_num == (hwid2)->mfg_num)))
/* Generic crosstalk widget initialization interface */
#if __KERNEL__
extern int xwidget_driver_register(xwidget_part_num_t part_num,
xwidget_mfg_num_t mfg_num,
char *driver_prefix,
unsigned flags);
extern void xwidget_driver_unregister(char *driver_prefix);
extern int xwidget_register(struct xwidget_hwid_s *hwid,
devfs_handle_t dev,
xwidgetnum_t id,
devfs_handle_t master,
xwidgetnum_t targetid,
async_attach_t aa);
extern int xwidget_unregister(devfs_handle_t);
extern void xwidget_error_register(devfs_handle_t xwidget,
error_handler_f * efunc,
error_handler_arg_t einfo);
extern void xwidget_reset(devfs_handle_t xwidget);
extern void xwidget_gfx_reset(devfs_handle_t xwidget);
extern char *xwidget_name_get(devfs_handle_t xwidget);
/* Generic crosstalk widget information access interface */
extern xwidget_info_t xwidget_info_chk(devfs_handle_t widget);
extern xwidget_info_t xwidget_info_get(devfs_handle_t widget);
extern void xwidget_info_set(devfs_handle_t widget, xwidget_info_t widget_info);
extern devfs_handle_t xwidget_info_dev_get(xwidget_info_t xwidget_info);
extern xwidgetnum_t xwidget_info_id_get(xwidget_info_t xwidget_info);
extern int xwidget_info_type_get(xwidget_info_t xwidget_info);
extern int xwidget_info_state_get(xwidget_info_t xwidget_info);
extern devfs_handle_t xwidget_info_master_get(xwidget_info_t xwidget_info);
extern xwidgetnum_t xwidget_info_masterid_get(xwidget_info_t xwidget_info);
extern xwidget_part_num_t xwidget_info_part_num_get(xwidget_info_t xwidget_info);
extern xwidget_rev_num_t xwidget_info_rev_num_get(xwidget_info_t xwidget_info);
extern xwidget_mfg_num_t xwidget_info_mfg_num_get(xwidget_info_t xwidget_info);
/*
* TBD: DELETE THIS ENTIRE STRUCTURE! Equivalent is now in
* xtalk_private.h: xwidget_info_s
* This is just here for now because we still have a lot of
* junk referencing it.
* However, since nobody looks inside ...
*/
typedef struct v_widget_s {
unsigned v_widget_s_is_really_empty;
#define v_widget_s_is_really_empty and using this would be a syntax error.
} v_widget_t;
#endif /* _KERNEL */
#endif /* _LANGUAGE_C */
#endif /* __ASM_SN_XTALK_XWIDGET_H__ */
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