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 /* Xtalk Widget Device Mfgr Nums */
88 #define WIDGET_XBOW_MFGR_NUM	0x0      /* IP30 XBow Chip */
89 #define WIDGET_XXBOW_MFGR_NUM	0x0      /* IP35 Xbow + XBridge Chip */
90 #define WIDGET_ODYS_MFGR_NUM	0x023    /* Odyssey / VPro GFX */
91 #define WIDGET_TPU_MFGR_NUM	0x024    /* Tensor Processor Unit */
92 #define WIDGET_XBRDG_MFGR_NUM	0x024    /* IP35 XBridge Chip */
93 #define WIDGET_HEART_MFGR_NUM	0x036    /* IP30 HEART Chip */
94 #define WIDGET_BRIDG_MFGR_NUM	0x036    /* PCI Bridge */
95 #define WIDGET_HUB_MFGR_NUM	0x036    /* IP27 Hub Chip */
96 #define WIDGET_BDRCK_MFGR_NUM	0x036    /* IP35 Bedrock Chip */
97 #define WIDGET_IMPCT_MFGR_NUM	0x2aa    /* HQ4 / Impact GFX */
98 #define WIDGET_KONA_MFGR_NUM	0x2aa    /* InfiniteReality3 / Kona GFX */
99 #define WIDGET_NULL_MFGR_NUM	-1       /* NULL */
100 
101 /* Xtalk Widget Device Part Nums */
102 #define WIDGET_XBOW_PART_NUM	0x0000
103 #define WIDGET_HEART_PART_NUM	0xc001
104 #define WIDGET_BRIDG_PART_NUM	0xc002
105 #define WIDGET_IMPCT_PART_NUM	0xc003
106 #define WIDGET_ODYS_PART_NUM	0xc013
107 #define WIDGET_HUB_PART_NUM	0xc101
108 #define WIDGET_KONA_PART_NUM	0xc102
109 #define WIDGET_BDRCK_PART_NUM	0xc110
110 #define WIDGET_TPU_PART_NUM	0xc202
111 #define WIDGET_XXBOW_PART_NUM	0xd000
112 #define WIDGET_XBRDG_PART_NUM	0xd002
113 #define WIDGET_NULL_PART_NUM	-1
114 
115 /* For Xtalk Widget identification */
116 struct widget_ident {
117 	u32 mfgr;
118 	u32 part;
119 	char *name;
120 	char *revs[16];
121 };
122 
123 /* Known Xtalk Widgets */
124 static const struct widget_ident __initconst widget_idents[] = {
125 	{
126 		WIDGET_XBOW_MFGR_NUM,
127 		WIDGET_XBOW_PART_NUM,
128 		"xbow",
129 		{NULL, "1.0", "1.1", "1.2", "1.3", "2.0", NULL},
130 	},
131 	{
132 		WIDGET_HEART_MFGR_NUM,
133 		WIDGET_HEART_PART_NUM,
134 		"heart",
135 		{NULL, "A", "B", "C", "D", "E", "F", NULL},
136 	},
137 	{
138 		WIDGET_BRIDG_MFGR_NUM,
139 		WIDGET_BRIDG_PART_NUM,
140 		"bridge",
141 		{NULL, "A", "B", "C", "D", NULL},
142 	},
143 	{
144 		WIDGET_IMPCT_MFGR_NUM,
145 		WIDGET_IMPCT_PART_NUM,
146 		"impact",
147 		{NULL, "A", "B", NULL},
148 	},
149 	{
150 		WIDGET_ODYS_MFGR_NUM,
151 		WIDGET_ODYS_PART_NUM,
152 		"odyssey",
153 		{NULL, "A", "B", NULL},
154 	},
155 	{
156 		WIDGET_HUB_MFGR_NUM,
157 		WIDGET_HUB_PART_NUM,
158 		"hub",
159 		{NULL, "1.0", "2.0", "2.1", "2.2", "2.3", "2.4", NULL},
160 	},
161 	{
162 		WIDGET_KONA_MFGR_NUM,
163 		WIDGET_KONA_PART_NUM,
164 		"kona",
165 		{NULL},
166 	},
167 	{
168 		WIDGET_BDRCK_MFGR_NUM,
169 		WIDGET_BDRCK_PART_NUM,
170 		"bedrock",
171 		{NULL, "1.0", "1.1", NULL},
172 	},
173 	{
174 		WIDGET_TPU_MFGR_NUM,
175 		WIDGET_TPU_PART_NUM,
176 		"tpu",
177 		{"0", NULL},
178 	},
179 	{
180 		WIDGET_XXBOW_MFGR_NUM,
181 		WIDGET_XXBOW_PART_NUM,
182 		"xxbow",
183 		{NULL, "1.0", "2.0", NULL},
184 	},
185 	{
186 		WIDGET_XBRDG_MFGR_NUM,
187 		WIDGET_XBRDG_PART_NUM,
188 		"xbridge",
189 		{NULL, "A", "B", NULL},
190 	},
191 	{
192 		WIDGET_NULL_MFGR_NUM,
193 		WIDGET_NULL_PART_NUM,
194 		NULL,
195 		{NULL},
196 	}
197 };
198 
199 /*
200  * according to the crosstalk spec, only 32-bits access to the widget
201  * configuration registers is allowed.	some widgets may allow 64-bits
202  * access but software should not depend on it.	 registers beyond the
203  * widget target flush register are widget dependent thus will not be
204  * defined here
205  */
206 #ifndef __ASSEMBLY__
207 typedef u32 widgetreg_t;
208 
209 /* widget configuration registers */
210 typedef volatile struct widget_cfg {
211 	widgetreg_t		w_pad_0;		/* 0x00 */
212 	widgetreg_t		w_id;			/* 0x04 */
213 	widgetreg_t		w_pad_1;		/* 0x08 */
214 	widgetreg_t		w_status;		/* 0x0c */
215 	widgetreg_t		w_pad_2;		/* 0x10 */
216 	widgetreg_t		w_err_upper_addr;	/* 0x14 */
217 	widgetreg_t		w_pad_3;		/* 0x18 */
218 	widgetreg_t		w_err_lower_addr;	/* 0x1c */
219 	widgetreg_t		w_pad_4;		/* 0x20 */
220 	widgetreg_t		w_control;		/* 0x24 */
221 	widgetreg_t		w_pad_5;		/* 0x28 */
222 	widgetreg_t		w_req_timeout;		/* 0x2c */
223 	widgetreg_t		w_pad_6;		/* 0x30 */
224 	widgetreg_t		w_intdest_upper_addr;	/* 0x34 */
225 	widgetreg_t		w_pad_7;		/* 0x38 */
226 	widgetreg_t		w_intdest_lower_addr;	/* 0x3c */
227 	widgetreg_t		w_pad_8;		/* 0x40 */
228 	widgetreg_t		w_err_cmd_word;		/* 0x44 */
229 	widgetreg_t		w_pad_9;		/* 0x48 */
230 	widgetreg_t		w_llp_cfg;		/* 0x4c */
231 	widgetreg_t		w_pad_10;		/* 0x50 */
232 	widgetreg_t		w_tflush;		/* 0x54 */
233 } widget_cfg_t;
234 
235 typedef struct {
236 	unsigned	didn:4;
237 	unsigned	sidn:4;
238 	unsigned	pactyp:4;
239 	unsigned	tnum:5;
240 	unsigned	ct:1;
241 	unsigned	ds:2;
242 	unsigned	gbr:1;
243 	unsigned	vbpm:1;
244 	unsigned	error:1;
245 	unsigned	bo:1;
246 	unsigned	other:8;
247 } w_err_cmd_word_f;
248 
249 typedef union {
250 	widgetreg_t		r;
251 	w_err_cmd_word_f	f;
252 } w_err_cmd_word_u;
253 
254 typedef struct xwidget_info_s *xwidget_info_t;
255 
256 /*
257  * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.
258  */
259 typedef struct xwidget_hwid_s {
260 	xwidget_part_num_t	part_num;
261 	xwidget_rev_num_t	rev_num;
262 	xwidget_mfg_num_t	mfg_num;
263 } *xwidget_hwid_t;
264 
265 
266 /*
267  * Returns 1 if a driver that handles devices described by hwid1 is able
268  * to manage a device with hardwareid hwid2.  NOTE: We don't check rev
269  * numbers at all.
270  */
271 #define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \
272 	(((hwid1)->part_num == (hwid2)->part_num) && \
273 	(((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
274 	((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
275 	((hwid1)->mfg_num == (hwid2)->mfg_num)))
276 
277 #endif /* !__ASSEMBLY__ */
278 
279 #endif /* _ASM_XTALK_XWIDGET_H */
280