drivers/scsi/mvsas/mv_sas.h

   1 /*
   2  * Marvell 88SE64xx/88SE94xx main function head file
   3  *
   4  * Copyright 2007 Red Hat, Inc.
   5  * Copyright 2008 Marvell. <kewei@marvell.com>
   6  *
   7  * This file is licensed under GPLv2.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; version 2 of the
  12  * License.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22  * USA
  23 */
  24
  25 #ifndef _MV_SAS_H_
  26 #define _MV_SAS_H_
  27
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/delay.h>
  32 #include <linux/types.h>
  33 #include <linux/ctype.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/pci.h>
  36 #include <linux/platform_device.h>
  37 #include <linux/interrupt.h>
  38 #include <linux/irq.h>
  39 #include <linux/slab.h>
  40 #include <linux/vmalloc.h>
  41 #include <scsi/libsas.h>
  42 #include <scsi/scsi.h>
  43 #include <scsi/scsi_tcq.h>
  44 #include <scsi/sas_ata.h>
  45 #include <linux/version.h>
  46 #include "mv_defs.h"
  47
  48 #define DRV_NAME                "mvsas"
  49 #define DRV_VERSION             "0.8.2"
  50 #define _MV_DUMP                0
  51 #define MVS_ID_NOT_MAPPED       0x7f
  52 /* #define DISABLE_HOTPLUG_DMA_FIX */
  53 // #define MAX_EXP_RUNNING_REQ  2
  54 #define WIDE_PORT_MAX_PHY               4
  55 #define MV_DISABLE_NCQ  0
  56 #define mv_printk(fmt, arg ...) \
  57         printk(KERN_DEBUG"%s %d:" fmt, __FILE__, __LINE__, ## arg)
  58 #ifdef MV_DEBUG
  59 #define mv_dprintk(format, arg...)      \
  60         printk(KERN_DEBUG"%s %d:" format, __FILE__, __LINE__, ## arg)
  61 #else
  62 #define mv_dprintk(format, arg...)
  63 #endif
  64 #define MV_MAX_U32                      0xffffffff
  65
  66 extern struct mvs_tgt_initiator mvs_tgt;
  67 extern struct mvs_info *tgt_mvi;
  68 extern const struct mvs_dispatch mvs_64xx_dispatch;
  69 extern const struct mvs_dispatch mvs_94xx_dispatch;
  70
  71 #define DEV_IS_EXPANDER(type)   \
  72         ((type == EDGE_DEV) || (type == FANOUT_DEV))
  73
  74 #define bit(n) ((u32)1 << n)
  75
  76 #define for_each_phy(__lseq_mask, __mc, __lseq)                 \
  77         for ((__mc) = (__lseq_mask), (__lseq) = 0;              \
  78                                         (__mc) != 0 ;           \
  79                                         (++__lseq), (__mc) >>= 1)
  80
  81 #define MV_INIT_DELAYED_WORK(w, f, d)   INIT_DELAYED_WORK(w, f)
  82 #define UNASSOC_D2H_FIS(id)             \
  83         ((void *) mvi->rx_fis + 0x100 * id)
  84 #define SATA_RECEIVED_FIS_LIST(reg_set) \
  85         ((void *) mvi->rx_fis + mvi->chip->fis_offs + 0x100 * reg_set)
  86 #define SATA_RECEIVED_SDB_FIS(reg_set)  \
  87         (SATA_RECEIVED_FIS_LIST(reg_set) + 0x58)
  88 #define SATA_RECEIVED_D2H_FIS(reg_set)  \
  89         (SATA_RECEIVED_FIS_LIST(reg_set) + 0x40)
  90 #define SATA_RECEIVED_PIO_FIS(reg_set)  \
  91         (SATA_RECEIVED_FIS_LIST(reg_set) + 0x20)
  92 #define SATA_RECEIVED_DMA_FIS(reg_set)  \
  93         (SATA_RECEIVED_FIS_LIST(reg_set) + 0x00)
  94
  95 enum dev_status {
  96         MVS_DEV_NORMAL = 0x0,
  97         MVS_DEV_EH      = 0x1,
  98 };
  99
 100
 101 struct mvs_info;
 102
 103 struct mvs_dispatch {
 104         char *name;
 105         int (*chip_init)(struct mvs_info *mvi);
 106         int (*spi_init)(struct mvs_info *mvi);
 107         int (*chip_ioremap)(struct mvs_info *mvi);
 108         void (*chip_iounmap)(struct mvs_info *mvi);
 109         irqreturn_t (*isr)(struct mvs_info *mvi, int irq, u32 stat);
 110         u32 (*isr_status)(struct mvs_info *mvi, int irq);
 111         void (*interrupt_enable)(struct mvs_info *mvi);
 112         void (*interrupt_disable)(struct mvs_info *mvi);
 113
 114         u32 (*read_phy_ctl)(struct mvs_info *mvi, u32 port);
 115         void (*write_phy_ctl)(struct mvs_info *mvi, u32 port, u32 val);
 116
 117         u32 (*read_port_cfg_data)(struct mvs_info *mvi, u32 port);
 118         void (*write_port_cfg_data)(struct mvs_info *mvi, u32 port, u32 val);
 119         void (*write_port_cfg_addr)(struct mvs_info *mvi, u32 port, u32 addr);
 120
 121         u32 (*read_port_vsr_data)(struct mvs_info *mvi, u32 port);
 122         void (*write_port_vsr_data)(struct mvs_info *mvi, u32 port, u32 val);
 123         void (*write_port_vsr_addr)(struct mvs_info *mvi, u32 port, u32 addr);
 124
 125         u32 (*read_port_irq_stat)(struct mvs_info *mvi, u32 port);
 126         void (*write_port_irq_stat)(struct mvs_info *mvi, u32 port, u32 val);
 127
 128         u32 (*read_port_irq_mask)(struct mvs_info *mvi, u32 port);
 129         void (*write_port_irq_mask)(struct mvs_info *mvi, u32 port, u32 val);
 130
 131         void (*get_sas_addr)(void *buf, u32 buflen);
 132         void (*command_active)(struct mvs_info *mvi, u32 slot_idx);
 133         void (*clear_srs_irq)(struct mvs_info *mvi, u8 reg_set, u8 clear_all);
 134         void (*issue_stop)(struct mvs_info *mvi, enum mvs_port_type type,
 135                                 u32 tfs);
 136         void (*start_delivery)(struct mvs_info *mvi, u32 tx);
 137         u32 (*rx_update)(struct mvs_info *mvi);
 138         void (*int_full)(struct mvs_info *mvi);
 139         u8 (*assign_reg_set)(struct mvs_info *mvi, u8 *tfs);
 140         void (*free_reg_set)(struct mvs_info *mvi, u8 *tfs);
 141         u32 (*prd_size)(void);
 142         u32 (*prd_count)(void);
 143         void (*make_prd)(struct scatterlist *scatter, int nr, void *prd);
 144         void (*detect_porttype)(struct mvs_info *mvi, int i);
 145         int (*oob_done)(struct mvs_info *mvi, int i);
 146         void (*fix_phy_info)(struct mvs_info *mvi, int i,
 147                                 struct sas_identify_frame *id);
 148         void (*phy_work_around)(struct mvs_info *mvi, int i);
 149         void (*phy_set_link_rate)(struct mvs_info *mvi, u32 phy_id,
 150                                 struct sas_phy_linkrates *rates);
 151         u32 (*phy_max_link_rate)(void);
 152         void (*phy_disable)(struct mvs_info *mvi, u32 phy_id);
 153         void (*phy_enable)(struct mvs_info *mvi, u32 phy_id);
 154         void (*phy_reset)(struct mvs_info *mvi, u32 phy_id, int hard);
 155         void (*stp_reset)(struct mvs_info *mvi, u32 phy_id);
 156         void (*clear_active_cmds)(struct mvs_info *mvi);
 157         u32 (*spi_read_data)(struct mvs_info *mvi);
 158         void (*spi_write_data)(struct mvs_info *mvi, u32 data);
 159         int (*spi_buildcmd)(struct mvs_info *mvi,
 160                                                 u32      *dwCmd,
 161                                                 u8       cmd,
 162                                                 u8       read,
 163                                                 u8       length,
 164                                                 u32      addr
 165                                                 );
 166         int (*spi_issuecmd)(struct mvs_info *mvi, u32 cmd);
 167         int (*spi_waitdataready)(struct mvs_info *mvi, u32 timeout);
 168 #ifndef DISABLE_HOTPLUG_DMA_FIX
 169         void (*dma_fix)(dma_addr_t buf_dma, int buf_len, int from, void *prd);
 170 #endif
 171
 172 };
 173
 174 struct mvs_chip_info {
 175         u32             n_host;
 176         u32             n_phy;
 177         u32             fis_offs;
 178         u32             fis_count;
 179         u32             srs_sz;
 180         u32             slot_width;
 181         const struct mvs_dispatch *dispatch;
 182 };
 183 #define MVS_CHIP_SLOT_SZ        (1U << mvi->chip->slot_width)
 184 #define MVS_RX_FISL_SZ          \
 185         (mvi->chip->fis_offs + (mvi->chip->fis_count * 0x100))
 186 #define MVS_CHIP_DISP           (mvi->chip->dispatch)
 187
 188 struct mvs_err_info {
 189         __le32                  flags;
 190         __le32                  flags2;
 191 };
 192
 193 struct mvs_cmd_hdr {
 194         __le32                  flags;  /* PRD tbl len; SAS, SATA ctl */
 195         __le32                  lens;   /* cmd, max resp frame len */
 196         __le32                  tags;   /* targ port xfer tag; tag */
 197         __le32                  data_len;       /* data xfer len */
 198         __le64                  cmd_tbl;        /* command table address */
 199         __le64                  open_frame;     /* open addr frame address */
 200         __le64                  status_buf;     /* status buffer address */
 201         __le64                  prd_tbl;                /* PRD tbl address */
 202         __le32                  reserved[4];
 203 };
 204
 205 struct mvs_port {
 206         struct asd_sas_port     sas_port;
 207         u8                      port_attached;
 208         u8                      wide_port_phymap;
 209         struct list_head        list;
 210 };
 211
 212 struct mvs_phy {
 213         struct mvs_info                 *mvi;
 214         struct mvs_port         *port;
 215         struct asd_sas_phy      sas_phy;
 216         struct sas_identify     identify;
 217         struct scsi_device      *sdev;
 218         struct timer_list timer;
 219         u64             dev_sas_addr;
 220         u64             att_dev_sas_addr;
 221         u32             att_dev_info;
 222         u32             dev_info;
 223         u32             phy_type;
 224         u32             phy_status;
 225         u32             irq_status;
 226         u32             frame_rcvd_size;
 227         u8              frame_rcvd[32];
 228         u8              phy_attached;
 229         u8              phy_mode;
 230         u8              reserved[2];
 231         u32             phy_event;
 232         enum sas_linkrate       minimum_linkrate;
 233         enum sas_linkrate       maximum_linkrate;
 234 };
 235
 236 struct mvs_device {
 237         struct list_head                dev_entry;
 238         enum sas_dev_type dev_type;
 239         struct mvs_info *mvi_info;
 240         struct domain_device *sas_device;
 241         struct timer_list timer;
 242         u32 attached_phy;
 243         u32 device_id;
 244         u32 running_req;
 245         u8 taskfileset;
 246         u8 dev_status;
 247         u16 reserved;
 248 };
 249
 250 struct mvs_slot_info {
 251         struct list_head entry;
 252         union {
 253                 struct sas_task *task;
 254                 void *tdata;
 255         };
 256         u32 n_elem;
 257         u32 tx;
 258         u32 slot_tag;
 259
 260         /* DMA buffer for storing cmd tbl, open addr frame, status buffer,
 261          * and PRD table
 262          */
 263         void *buf;
 264         dma_addr_t buf_dma;
 265 #if _MV_DUMP
 266         u32 cmd_size;
 267 #endif
 268         void *response;
 269         struct mvs_port *port;
 270         struct mvs_device       *device;
 271         void *open_frame;
 272 };
 273
 274 struct mvs_info {
 275         unsigned long flags;
 276
 277         /* host-wide lock */
 278         spinlock_t lock;
 279
 280         /* our device */
 281         struct pci_dev *pdev;
 282         struct device *dev;
 283
 284         /* enhanced mode registers */
 285         void __iomem *regs;
 286
 287         /* peripheral or soc registers */
 288         void __iomem *regs_ex;
 289         u8 sas_addr[SAS_ADDR_SIZE];
 290
 291         /* SCSI/SAS glue */
 292         struct sas_ha_struct *sas;
 293         struct Scsi_Host *shost;
 294
 295         /* TX (delivery) DMA ring */
 296         __le32 *tx;
 297         dma_addr_t tx_dma;
 298
 299         /* cached next-producer idx */
 300         u32 tx_prod;
 301
 302         /* RX (completion) DMA ring */
 303         __le32  *rx;
 304         dma_addr_t rx_dma;
 305
 306         /* RX consumer idx */
 307         u32 rx_cons;
 308
 309         /* RX'd FIS area */
 310         __le32 *rx_fis;
 311         dma_addr_t rx_fis_dma;
 312
 313         /* DMA command header slots */
 314         struct mvs_cmd_hdr *slot;
 315         dma_addr_t slot_dma;
 316
 317         u32 chip_id;
 318         const struct mvs_chip_info *chip;
 319
 320         int tags_num;
 321         DECLARE_BITMAP(tags, MVS_SLOTS);
 322         /* further per-slot information */
 323         struct mvs_phy phy[MVS_MAX_PHYS];
 324         struct mvs_port port[MVS_MAX_PHYS];
 325         u32 irq;
 326         u32 exp_req;
 327         u32 id;
 328         u64 sata_reg_set;
 329         struct list_head *hba_list;
 330         struct list_head soc_entry;
 331         struct list_head wq_list;
 332         unsigned long instance;
 333         u16 flashid;
 334         u32 flashsize;
 335         u32 flashsectSize;
 336
 337         void *addon;
 338         struct mvs_device       devices[MVS_MAX_DEVICES];
 339 #ifndef DISABLE_HOTPLUG_DMA_FIX
 340         void *bulk_buffer;
 341         dma_addr_t bulk_buffer_dma;
 342 #define TRASH_BUCKET_SIZE       0x20000
 343 #endif
 344         struct mvs_slot_info slot_info[0];
 345 };
 346
 347 struct mvs_prv_info{
 348         u8 n_host;
 349         u8 n_phy;
 350         u16 reserve;
 351         struct mvs_info *mvi[2];
 352 };
 353
 354 struct mvs_wq {
 355         struct delayed_work work_q;
 356         struct mvs_info *mvi;
 357         void *data;
 358         int handler;
 359         struct list_head entry;
 360 };
 361
 362 struct mvs_task_exec_info {
 363         struct sas_task *task;
 364         struct mvs_cmd_hdr *hdr;
 365         struct mvs_port *port;
 366         u32 tag;
 367         int n_elem;
 368 };
 369
 370
 371 /******************** function prototype *********************/
 372 void mvs_get_sas_addr(void *buf, u32 buflen);
 373 void mvs_tag_clear(struct mvs_info *mvi, u32 tag);
 374 void mvs_tag_free(struct mvs_info *mvi, u32 tag);
 375 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag);
 376 int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out);
 377 void mvs_tag_init(struct mvs_info *mvi);
 378 void mvs_iounmap(void __iomem *regs);
 379 int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex);
 380 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard);
 381 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 382                         void *funcdata);
 383 void __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id,
 384                                 u32 off_lo, u32 off_hi, u64 sas_addr);
 385 int mvs_slave_alloc(struct scsi_device *scsi_dev);
 386 int mvs_slave_configure(struct scsi_device *sdev);
 387 void mvs_scan_start(struct Scsi_Host *shost);
 388 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time);
 389 int mvs_queue_command(struct sas_task *task, const int num,
 390                         gfp_t gfp_flags);
 391 int mvs_abort_task(struct sas_task *task);
 392 int mvs_abort_task_set(struct domain_device *dev, u8 *lun);
 393 int mvs_clear_aca(struct domain_device *dev, u8 *lun);
 394 int mvs_clear_task_set(struct domain_device *dev, u8 * lun);
 395 void mvs_port_formed(struct asd_sas_phy *sas_phy);
 396 void mvs_port_deformed(struct asd_sas_phy *sas_phy);
 397 int mvs_dev_found(struct domain_device *dev);
 398 void mvs_dev_gone(struct domain_device *dev);
 399 int mvs_lu_reset(struct domain_device *dev, u8 *lun);
 400 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags);
 401 int mvs_I_T_nexus_reset(struct domain_device *dev);
 402 int mvs_query_task(struct sas_task *task);
 403 void mvs_release_task(struct mvs_info *mvi,
 404                         struct domain_device *dev);
 405 void mvs_do_release_task(struct mvs_info *mvi, int phy_no,
 406                         struct domain_device *dev);
 407 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events);
 408 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st);
 409 int mvs_int_rx(struct mvs_info *mvi, bool self_clear);
 410 void mvs_hexdump(u32 size, u8 *data, u32 baseaddr);
 411 #endif
 412