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