1 /*
2 * Aic94xx SAS/SATA driver hardware registers definitions.
3 *
4 * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
5 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
6 *
7 * This file is licensed under GPLv2.
8 *
9 * This file is part of the aic94xx driver.
10 *
11 * The aic94xx driver is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; version 2 of the
14 * License.
15 *
16 * The aic94xx driver is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with the aic94xx driver; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 *
25 */
26
27 #ifndef _AIC94XX_REG_H_
28 #define _AIC94XX_REG_H_
29
30 #include <asm/io.h>
31 #include "aic94xx_hwi.h"
32
33 /* Values */
34 #define AIC9410_DEV_REV_B0 0x8
35
36 /* MBAR0, SWA, SWB, SWC, internal memory space addresses */
37 #define REG_BASE_ADDR 0xB8000000
38 #define REG_BASE_ADDR_CSEQCIO 0xB8002000
39 #define REG_BASE_ADDR_EXSI 0xB8042800
40
41 #define MBAR0_SWA_SIZE 0x58
42 extern u32 MBAR0_SWB_SIZE;
43 #define MBAR0_SWC_SIZE 0x8
44
45 /* MBAR1, points to On Chip Memory */
46 #define OCM_BASE_ADDR 0xA0000000
47 #define OCM_MAX_SIZE 0x20000
48
49 /* Smallest address possible to reference */
50 #define ALL_BASE_ADDR OCM_BASE_ADDR
51
52 /* PCI configuration space registers */
53 #define PCI_IOBAR_OFFSET 4
54
55 #define PCI_CONF_MBAR1 0x6C
56 #define PCI_CONF_MBAR0_SWA 0x70
57 #define PCI_CONF_MBAR0_SWB 0x74
58 #define PCI_CONF_MBAR0_SWC 0x78
59 #define PCI_CONF_MBAR_KEY 0x7C
60 #define PCI_CONF_FLSH_BAR 0xB8
61
62 #include "aic94xx_reg_def.h"
63
64 u8 asd_read_reg_byte(struct asd_ha_struct *asd_ha, u32 reg);
65 u16 asd_read_reg_word(struct asd_ha_struct *asd_ha, u32 reg);
66 u32 asd_read_reg_dword(struct asd_ha_struct *asd_ha, u32 reg);
67
68 void asd_write_reg_byte(struct asd_ha_struct *asd_ha, u32 reg, u8 val);
69 void asd_write_reg_word(struct asd_ha_struct *asd_ha, u32 reg, u16 val);
70 void asd_write_reg_dword(struct asd_ha_struct *asd_ha, u32 reg, u32 val);
71
72 void asd_read_reg_string(struct asd_ha_struct *asd_ha, void *dst,
73 u32 offs, int count);
74 void asd_write_reg_string(struct asd_ha_struct *asd_ha, void *src,
75 u32 offs, int count);
76
77 #define ASD_READ_OCM(type, ord, S) \
78 static inline type asd_read_ocm_##ord (struct asd_ha_struct *asd_ha, \
79 u32 offs) \
80 { \
81 struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[1]; \
82 type val = read##S (io_handle->addr + (unsigned long) offs); \
83 rmb(); \
84 return val; \
85 }
86
87 ASD_READ_OCM(u8, byte, b);
88 ASD_READ_OCM(u16,word, w);
89 ASD_READ_OCM(u32,dword,l);
90
91 #define ASD_WRITE_OCM(type, ord, S) \
92 static inline void asd_write_ocm_##ord (struct asd_ha_struct *asd_ha, \
93 u32 offs, type val) \
94 { \
95 struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[1]; \
96 write##S (val, io_handle->addr + (unsigned long) offs); \
97 return; \
98 }
99
100 ASD_WRITE_OCM(u8, byte, b);
101 ASD_WRITE_OCM(u16,word, w);
102 ASD_WRITE_OCM(u32,dword,l);
103
104 #define ASD_DDBSITE_READ(type, ord) \
105 static inline type asd_ddbsite_read_##ord (struct asd_ha_struct *asd_ha, \
106 u16 ddb_site_no, \
107 u16 offs) \
108 { \
109 asd_write_reg_word(asd_ha, ALTCIOADR, MnDDB_SITE + offs); \
110 asd_write_reg_word(asd_ha, ADDBPTR, ddb_site_no); \
111 return asd_read_reg_##ord (asd_ha, CTXACCESS); \
112 }
113
114 ASD_DDBSITE_READ(u32, dword);
115 ASD_DDBSITE_READ(u16, word);
116
117 static inline u8 asd_ddbsite_read_byte(struct asd_ha_struct *asd_ha,
118 u16 ddb_site_no,
119 u16 offs)
120 {
121 if (offs & 1)
122 return asd_ddbsite_read_word(asd_ha, ddb_site_no,
123 offs & ~1) >> 8;
124 else
125 return asd_ddbsite_read_word(asd_ha, ddb_site_no,
126 offs) & 0xFF;
127 }
128
129
130 #define ASD_DDBSITE_WRITE(type, ord) \
131 static inline void asd_ddbsite_write_##ord (struct asd_ha_struct *asd_ha, \
132 u16 ddb_site_no, \
133 u16 offs, type val) \
134 { \
135 asd_write_reg_word(asd_ha, ALTCIOADR, MnDDB_SITE + offs); \
136 asd_write_reg_word(asd_ha, ADDBPTR, ddb_site_no); \
137 asd_write_reg_##ord (asd_ha, CTXACCESS, val); \
138 }
139
140 ASD_DDBSITE_WRITE(u32, dword);
141 ASD_DDBSITE_WRITE(u16, word);
142
143 static inline void asd_ddbsite_write_byte(struct asd_ha_struct *asd_ha,
144 u16 ddb_site_no,
145 u16 offs, u8 val)
146 {
147 u16 base = offs & ~1;
148 u16 rval = asd_ddbsite_read_word(asd_ha, ddb_site_no, base);
149 if (offs & 1)
150 rval = (val << 8) | (rval & 0xFF);
151 else
152 rval = (rval & 0xFF00) | val;
153 asd_ddbsite_write_word(asd_ha, ddb_site_no, base, rval);
154 }
155
156
157 #define ASD_SCBSITE_READ(type, ord) \
158 static inline type asd_scbsite_read_##ord (struct asd_ha_struct *asd_ha, \
159 u16 scb_site_no, \
160 u16 offs) \
161 { \
162 asd_write_reg_word(asd_ha, ALTCIOADR, MnSCB_SITE + offs); \
163 asd_write_reg_word(asd_ha, ASCBPTR, scb_site_no); \
164 return asd_read_reg_##ord (asd_ha, CTXACCESS); \
165 }
166
167 ASD_SCBSITE_READ(u32, dword);
168 ASD_SCBSITE_READ(u16, word);
169
170 static inline u8 asd_scbsite_read_byte(struct asd_ha_struct *asd_ha,
171 u16 scb_site_no,
172 u16 offs)
173 {
174 if (offs & 1)
175 return asd_scbsite_read_word(asd_ha, scb_site_no,
176 offs & ~1) >> 8;
177 else
178 return asd_scbsite_read_word(asd_ha, scb_site_no,
179 offs) & 0xFF;
180 }
181
182
183 #define ASD_SCBSITE_WRITE(type, ord) \
184 static inline void asd_scbsite_write_##ord (struct asd_ha_struct *asd_ha, \
185 u16 scb_site_no, \
186 u16 offs, type val) \
187 { \
188 asd_write_reg_word(asd_ha, ALTCIOADR, MnSCB_SITE + offs); \
189 asd_write_reg_word(asd_ha, ASCBPTR, scb_site_no); \
190 asd_write_reg_##ord (asd_ha, CTXACCESS, val); \
191 }
192
193 ASD_SCBSITE_WRITE(u32, dword);
194 ASD_SCBSITE_WRITE(u16, word);
195
196 static inline void asd_scbsite_write_byte(struct asd_ha_struct *asd_ha,
197 u16 scb_site_no,
198 u16 offs, u8 val)
199 {
200 u16 base = offs & ~1;
201 u16 rval = asd_scbsite_read_word(asd_ha, scb_site_no, base);
202 if (offs & 1)
203 rval = (val << 8) | (rval & 0xFF);
204 else
205 rval = (rval & 0xFF00) | val;
206 asd_scbsite_write_word(asd_ha, scb_site_no, base, rval);
207 }
208
209 /**
210 * asd_ddbsite_update_word -- atomically update a word in a ddb site
211 * @asd_ha: pointer to host adapter structure
212 * @ddb_site_no: the DDB site number
213 * @offs: the offset into the DDB
214 * @oldval: old value found in that offset
215 * @newval: the new value to replace it
216 *
217 * This function is used when the sequencers are running and we need to
218 * update a DDB site atomically without expensive pausing and upausing
219 * of the sequencers and accessing the DDB site through the CIO bus.
220 *
221 * Return 0 on success; -EFAULT on parity error; -EAGAIN if the old value
222 * is different than the current value at that offset.
223 */
224 static inline int asd_ddbsite_update_word(struct asd_ha_struct *asd_ha,
225 u16 ddb_site_no, u16 offs,
226 u16 oldval, u16 newval)
227 {
228 u8 done;
229 u16 oval = asd_ddbsite_read_word(asd_ha, ddb_site_no, offs);
230 if (oval != oldval)
231 return -EAGAIN;
232 asd_write_reg_word(asd_ha, AOLDDATA, oldval);
233 asd_write_reg_word(asd_ha, ANEWDATA, newval);
234 do {
235 done = asd_read_reg_byte(asd_ha, ATOMICSTATCTL);
236 } while (!(done & ATOMICDONE));
237 if (done & ATOMICERR)
238 return -EFAULT; /* parity error */
239 else if (done & ATOMICWIN)
240 return 0; /* success */
241 else
242 return -EAGAIN; /* oldval different than current value */
243 }
244
245 static inline int asd_ddbsite_update_byte(struct asd_ha_struct *asd_ha,
246 u16 ddb_site_no, u16 offs,
247 u8 _oldval, u8 _newval)
248 {
249 u16 base = offs & ~1;
250 u16 oval;
251 u16 nval = asd_ddbsite_read_word(asd_ha, ddb_site_no, base);
252 if (offs & 1) {
253 if ((nval >> 8) != _oldval)
254 return -EAGAIN;
255 nval = (_newval << 8) | (nval & 0xFF);
256 oval = (_oldval << 8) | (nval & 0xFF);
257 } else {
258 if ((nval & 0xFF) != _oldval)
259 return -EAGAIN;
260 nval = (nval & 0xFF00) | _newval;
261 oval = (nval & 0xFF00) | _oldval;
262 }
263 return asd_ddbsite_update_word(asd_ha, ddb_site_no, base, oval, nval);
264 }
265
266 static inline void asd_write_reg_addr(struct asd_ha_struct *asd_ha, u32 reg,
267 dma_addr_t dma_handle)
268 {
269 asd_write_reg_dword(asd_ha, reg, ASD_BUSADDR_LO(dma_handle));
270 asd_write_reg_dword(asd_ha, reg+4, ASD_BUSADDR_HI(dma_handle));
271 }
272
273 static inline u32 asd_get_cmdctx_size(struct asd_ha_struct *asd_ha)
274 {
275 /* DCHREVISION returns 0, possibly broken */
276 u32 ctxmemsize = asd_read_reg_dword(asd_ha, LmMnINT(0,0)) & CTXMEMSIZE;
277 return ctxmemsize ? 65536 : 32768;
278 }
279
280 static inline u32 asd_get_devctx_size(struct asd_ha_struct *asd_ha)
281 {
282 u32 ctxmemsize = asd_read_reg_dword(asd_ha, LmMnINT(0,0)) & CTXMEMSIZE;
283 return ctxmemsize ? 8192 : 4096;
284 }
285
286 static inline void asd_disable_ints(struct asd_ha_struct *asd_ha)
287 {
288 asd_write_reg_dword(asd_ha, CHIMINTEN, RST_CHIMINTEN);
289 }
290
291 static inline void asd_enable_ints(struct asd_ha_struct *asd_ha)
292 {
293 /* Enable COM SAS interrupt on errors, COMSTAT */
294 asd_write_reg_dword(asd_ha, COMSTATEN,
295 EN_CSBUFPERR | EN_CSERR | EN_OVLYERR);
296 /* Enable DCH SAS CFIFTOERR */
297 asd_write_reg_dword(asd_ha, DCHSTATUS, EN_CFIFTOERR);
298 /* Enable Host Device interrupts */
299 asd_write_reg_dword(asd_ha, CHIMINTEN, SET_CHIMINTEN);
300 }
301
302 #endif
303
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