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__ 95 typedef u32 widgetreg_t; 96 97 /* widget configuration registers */ 98 typedef 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; 122 123 typedef 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; 136 137 typedef union { 138 widgetreg_t r; 139 w_err_cmd_word_f f; 140 } w_err_cmd_word_u; 141 142 typedef struct xwidget_info_s *xwidget_info_t; 143 144 /* 145 * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec. 146 */ 147 typedef 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