drivers/scsi/aic94xx/aic94xx_reg.h

   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