Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |