1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * xwidget.h - generic crosstalk widget header file, derived from IRIX 7 * <sys/xtalk/xtalkwidget.h>, revision 1.32. 8 * 9 * Copyright (C) 1996, 1999 Silcon Graphics, Inc. 10 * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org) 11 */ 12#ifndef _ASM_XTALK_XWIDGET_H 13#define _ASM_XTALK_XWIDGET_H 14 15#include <linux/types.h> 16#include <asm/xtalk/xtalk.h> 17 18#define WIDGET_ID 0x04 19#define WIDGET_STATUS 0x0c 20#define WIDGET_ERR_UPPER_ADDR 0x14 21#define WIDGET_ERR_LOWER_ADDR 0x1c 22#define WIDGET_CONTROL 0x24 23#define WIDGET_REQ_TIMEOUT 0x2c 24#define WIDGET_INTDEST_UPPER_ADDR 0x34 25#define WIDGET_INTDEST_LOWER_ADDR 0x3c 26#define WIDGET_ERR_CMD_WORD 0x44 27#define WIDGET_LLP_CFG 0x4c 28#define WIDGET_TFLUSH 0x54 29 30/* WIDGET_ID */ 31#define WIDGET_REV_NUM 0xf0000000 32#define WIDGET_PART_NUM 0x0ffff000 33#define WIDGET_MFG_NUM 0x00000ffe 34#define WIDGET_REV_NUM_SHFT 28 35#define WIDGET_PART_NUM_SHFT 12 36#define WIDGET_MFG_NUM_SHFT 1 37 38#define XWIDGET_PART_NUM(widgetid) (((widgetid) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT) 39#define XWIDGET_REV_NUM(widgetid) (((widgetid) & WIDGET_REV_NUM) >> WIDGET_REV_NUM_SHFT) 40#define XWIDGET_MFG_NUM(widgetid) (((widgetid) & WIDGET_MFG_NUM) >> WIDGET_MFG_NUM_SHFT) 41 42/* WIDGET_STATUS */ 43#define WIDGET_LLP_REC_CNT 0xff000000 44#define WIDGET_LLP_TX_CNT 0x00ff0000 45#define WIDGET_PENDING 0x0000001f 46 47/* WIDGET_ERR_UPPER_ADDR */ 48#define WIDGET_ERR_UPPER_ADDR_ONLY 0x0000ffff 49 50/* WIDGET_CONTROL */ 51#define WIDGET_F_BAD_PKT 0x00010000 52#define WIDGET_LLP_XBAR_CRD 0x0000f000 53#define WIDGET_LLP_XBAR_CRD_SHFT 12 54#define WIDGET_CLR_RLLP_CNT 0x00000800 55#define WIDGET_CLR_TLLP_CNT 0x00000400 56#define WIDGET_SYS_END 0x00000200 57#define WIDGET_MAX_TRANS 0x000001f0 58#define WIDGET_WIDGET_ID 0x0000000f 59 60/* WIDGET_INTDEST_UPPER_ADDR */ 61#define WIDGET_INT_VECTOR 0xff000000 62#define WIDGET_INT_VECTOR_SHFT 24 63#define WIDGET_TARGET_ID 0x000f0000 64#define WIDGET_TARGET_ID_SHFT 16 65#define WIDGET_UPP_ADDR 0x0000ffff 66 67/* WIDGET_ERR_CMD_WORD */ 68#define WIDGET_DIDN 0xf0000000 69#define WIDGET_SIDN 0x0f000000 70#define WIDGET_PACTYP 0x00f00000 71#define WIDGET_TNUM 0x000f8000 72#define WIDGET_COHERENT 0x00004000 73#define WIDGET_DS 0x00003000 74#define WIDGET_GBR 0x00000800 75#define WIDGET_VBPM 0x00000400 76#define WIDGET_ERROR 0x00000200 77#define WIDGET_BARRIER 0x00000100 78 79/* WIDGET_LLP_CFG */ 80#define WIDGET_LLP_MAXRETRY 0x03ff0000 81#define WIDGET_LLP_MAXRETRY_SHFT 16 82#define WIDGET_LLP_NULLTIMEOUT 0x0000fc00 83#define WIDGET_LLP_NULLTIMEOUT_SHFT 10 84#define WIDGET_LLP_MAXBURST 0x000003ff 85#define WIDGET_LLP_MAXBURST_SHFT 0 86 87/* 88 * according to the crosstalk spec, only 32-bits access to the widget 89 * configuration registers is allowed. some widgets may allow 64-bits 90 * access but software should not depend on it. registers beyond the 91 * widget target flush register are widget dependent thus will not be 92 * defined here 93 */ 94#ifndef __ASSEMBLY__ 95typedef u32 widgetreg_t; 96 97/* widget configuration registers */ 98typedef volatile struct widget_cfg { 99 widgetreg_t w_pad_0; /* 0x00 */ 100 widgetreg_t w_id; /* 0x04 */ 101 widgetreg_t w_pad_1; /* 0x08 */ 102 widgetreg_t w_status; /* 0x0c */ 103 widgetreg_t w_pad_2; /* 0x10 */ 104 widgetreg_t w_err_upper_addr; /* 0x14 */ 105 widgetreg_t w_pad_3; /* 0x18 */ 106 widgetreg_t w_err_lower_addr; /* 0x1c */ 107 widgetreg_t w_pad_4; /* 0x20 */ 108 widgetreg_t w_control; /* 0x24 */ 109 widgetreg_t w_pad_5; /* 0x28 */ 110 widgetreg_t w_req_timeout; /* 0x2c */ 111 widgetreg_t w_pad_6; /* 0x30 */ 112 widgetreg_t w_intdest_upper_addr; /* 0x34 */ 113 widgetreg_t w_pad_7; /* 0x38 */ 114 widgetreg_t w_intdest_lower_addr; /* 0x3c */ 115 widgetreg_t w_pad_8; /* 0x40 */ 116 widgetreg_t w_err_cmd_word; /* 0x44 */ 117 widgetreg_t w_pad_9; /* 0x48 */ 118 widgetreg_t w_llp_cfg; /* 0x4c */ 119 widgetreg_t w_pad_10; /* 0x50 */ 120 widgetreg_t w_tflush; /* 0x54 */ 121} widget_cfg_t; 122 123typedef struct { 124 unsigned didn:4; 125 unsigned sidn:4; 126 unsigned pactyp:4; 127 unsigned tnum:5; 128 unsigned ct:1; 129 unsigned ds:2; 130 unsigned gbr:1; 131 unsigned vbpm:1; 132 unsigned error:1; 133 unsigned bo:1; 134 unsigned other:8; 135} w_err_cmd_word_f; 136 137typedef union { 138 widgetreg_t r; 139 w_err_cmd_word_f f; 140} w_err_cmd_word_u; 141 142typedef struct xwidget_info_s *xwidget_info_t; 143 144/* 145 * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec. 146 */ 147typedef struct xwidget_hwid_s { 148 xwidget_part_num_t part_num; 149 xwidget_rev_num_t rev_num; 150 xwidget_mfg_num_t mfg_num; 151} *xwidget_hwid_t; 152 153 154/* 155 * Returns 1 if a driver that handles devices described by hwid1 is able 156 * to manage a device with hardwareid hwid2. NOTE: We don't check rev 157 * numbers at all. 158 */ 159#define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \ 160 (((hwid1)->part_num == (hwid2)->part_num) && \ 161 (((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \ 162 ((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \ 163 ((hwid1)->mfg_num == (hwid2)->mfg_num))) 164 165#endif /* !__ASSEMBLY__ */ 166 167#endif /* _ASM_XTALK_XWIDGET_H */ 168