drivers/net/enic/vnic_devcmd.h

   1 /*
   2  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you may redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16  * SOFTWARE.
  17  *
  18  */
  19
  20 #ifndef _VNIC_DEVCMD_H_
  21 #define _VNIC_DEVCMD_H_
  22
  23 #define _CMD_NBITS      14
  24 #define _CMD_VTYPEBITS  10
  25 #define _CMD_FLAGSBITS  6
  26 #define _CMD_DIRBITS    2
  27
  28 #define _CMD_NMASK      ((1 << _CMD_NBITS)-1)
  29 #define _CMD_VTYPEMASK  ((1 << _CMD_VTYPEBITS)-1)
  30 #define _CMD_FLAGSMASK  ((1 << _CMD_FLAGSBITS)-1)
  31 #define _CMD_DIRMASK    ((1 << _CMD_DIRBITS)-1)
  32
  33 #define _CMD_NSHIFT     0
  34 #define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
  35 #define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
  36 #define _CMD_DIRSHIFT   (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
  37
  38 /*
  39  * Direction bits (from host perspective).
  40  */
  41 #define _CMD_DIR_NONE   0U
  42 #define _CMD_DIR_WRITE  1U
  43 #define _CMD_DIR_READ   2U
  44 #define _CMD_DIR_RW     (_CMD_DIR_WRITE | _CMD_DIR_READ)
  45
  46 /*
  47  * Flag bits.
  48  */
  49 #define _CMD_FLAGS_NONE 0U
  50 #define _CMD_FLAGS_NOWAIT 1U
  51
  52 /*
  53  * vNIC type bits.
  54  */
  55 #define _CMD_VTYPE_NONE  0U
  56 #define _CMD_VTYPE_ENET  1U
  57 #define _CMD_VTYPE_FC    2U
  58 #define _CMD_VTYPE_SCSI  4U
  59 #define _CMD_VTYPE_ALL   (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
  60
  61 /*
  62  * Used to create cmds..
  63 */
  64 #define _CMDCF(dir, flags, vtype, nr)  \
  65         (((dir)   << _CMD_DIRSHIFT) | \
  66         ((flags) << _CMD_FLAGSSHIFT) | \
  67         ((vtype) << _CMD_VTYPESHIFT) | \
  68         ((nr)    << _CMD_NSHIFT))
  69 #define _CMDC(dir, vtype, nr)    _CMDCF(dir, 0, vtype, nr)
  70 #define _CMDCNW(dir, vtype, nr)  _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
  71
  72 /*
  73  * Used to decode cmds..
  74 */
  75 #define _CMD_DIR(cmd)            (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
  76 #define _CMD_FLAGS(cmd)          (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
  77 #define _CMD_VTYPE(cmd)          (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
  78 #define _CMD_N(cmd)              (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
  79
  80 enum vnic_devcmd_cmd {
  81         CMD_NONE                = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
  82
  83         /* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
  84         CMD_MCPU_FW_INFO        = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
  85
  86         /* dev-specific block member:
  87          *    in: (u16)a0=offset,(u8)a1=size
  88          *    out: a0=value */
  89         CMD_DEV_SPEC            = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
  90
  91         /* stats clear */
  92         CMD_STATS_CLEAR         = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
  93
  94         /* stats dump in mem: (u64)a0=paddr to stats area,
  95          *                    (u16)a1=sizeof stats area */
  96         CMD_STATS_DUMP          = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
  97
  98         /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
  99         CMD_PACKET_FILTER       = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7),
 100
 101         /* hang detection notification */
 102         CMD_HANG_NOTIFY         = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
 103
 104         /* MAC address in (u48)a0 */
 105         CMD_MAC_ADDR            = _CMDC(_CMD_DIR_READ,
 106                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
 107
 108         /* add addr from (u48)a0 */
 109         CMD_ADDR_ADD            = _CMDCNW(_CMD_DIR_WRITE,
 110                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
 111
 112         /* del addr from (u48)a0 */
 113         CMD_ADDR_DEL            = _CMDCNW(_CMD_DIR_WRITE,
 114                                         _CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
 115
 116         /* add VLAN id in (u16)a0 */
 117         CMD_VLAN_ADD            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
 118
 119         /* del VLAN id in (u16)a0 */
 120         CMD_VLAN_DEL            = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
 121
 122         /* nic_cfg in (u32)a0 */
 123         CMD_NIC_CFG             = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
 124
 125         /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
 126         CMD_RSS_KEY             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
 127
 128         /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
 129         CMD_RSS_CPU             = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
 130
 131         /* initiate softreset */
 132         CMD_SOFT_RESET          = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
 133
 134         /* softreset status:
 135          *    out: a0=0 reset complete, a0=1 reset in progress */
 136         CMD_SOFT_RESET_STATUS   = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
 137
 138         /* set struct vnic_devcmd_notify buffer in mem:
 139          * in:
 140          *   (u64)a0=paddr to notify (set paddr=0 to unset)
 141          *   (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
 142          *   (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
 143          * out:
 144          *   (u32)a1 = effective size
 145          */
 146         CMD_NOTIFY              = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
 147
 148         /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
 149          *           (u8)a1=PXENV_UNDI_xxx */
 150         CMD_UNDI                = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
 151
 152         /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
 153         CMD_OPEN                = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
 154
 155         /* open status:
 156          *    out: a0=0 open complete, a0=1 open in progress */
 157         CMD_OPEN_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
 158
 159         /* close vnic */
 160         CMD_CLOSE               = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
 161
 162         /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
 163 /***** Replaced by CMD_INIT *****/
 164         CMD_INIT_v1             = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
 165
 166         /* variant of CMD_INIT, with provisioning info
 167          *     (u64)a0=paddr of vnic_devcmd_provinfo
 168          *     (u32)a1=sizeof provision info */
 169         CMD_INIT_PROV_INFO      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
 170
 171         /* enable virtual link */
 172         CMD_ENABLE              = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
 173
 174         /* disable virtual link */
 175         CMD_DISABLE             = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
 176
 177         /* stats dump sum of all vnic stats on same uplink in mem:
 178          *     (u64)a0=paddr
 179          *     (u16)a1=sizeof stats area */
 180         CMD_STATS_DUMP_ALL      = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
 181
 182         /* init status:
 183          *    out: a0=0 init complete, a0=1 init in progress
 184          *         if a0=0, a1=errno */
 185         CMD_INIT_STATUS         = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
 186
 187         /* INT13 API: (u64)a0=paddr to vnic_int13_params struct
 188          *            (u32)a1=INT13_CMD_xxx */
 189         CMD_INT13               = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
 190
 191         /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
 192         CMD_LOGICAL_UPLINK      = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
 193
 194         /* undo initialize of virtual link */
 195         CMD_DEINIT              = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
 196
 197         /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
 198         CMD_INIT                = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35),
 199
 200         /* check fw capability of a cmd:
 201          * in:  (u32)a0=cmd
 202          * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
 203         CMD_CAPABILITY          = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
 204
 205         /* persistent binding info
 206          * in:  (u64)a0=paddr of arg
 207          *      (u32)a1=CMD_PERBI_XXX */
 208         CMD_PERBI               = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37),
 209
 210         /* Interrupt Assert Register functionality
 211          * in: (u16)a0=interrupt number to assert
 212          */
 213         CMD_IAR                 = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38),
 214 };
 215
 216 /* flags for CMD_OPEN */
 217 #define CMD_OPENF_OPROM         0x1     /* open coming from option rom */
 218
 219 /* flags for CMD_INIT */
 220 #define CMD_INITF_DEFAULT_MAC   0x1     /* init with default mac addr */
 221
 222 /* flags for CMD_PACKET_FILTER */
 223 #define CMD_PFILTER_DIRECTED            0x01
 224 #define CMD_PFILTER_MULTICAST           0x02
 225 #define CMD_PFILTER_BROADCAST           0x04
 226 #define CMD_PFILTER_PROMISCUOUS         0x08
 227 #define CMD_PFILTER_ALL_MULTICAST       0x10
 228
 229 enum vnic_devcmd_status {
 230         STAT_NONE = 0,
 231         STAT_BUSY = 1 << 0,     /* cmd in progress */
 232         STAT_ERROR = 1 << 1,    /* last cmd caused error (code in a0) */
 233 };
 234
 235 enum vnic_devcmd_error {
 236         ERR_SUCCESS = 0,
 237         ERR_EINVAL = 1,
 238         ERR_EFAULT = 2,
 239         ERR_EPERM = 3,
 240         ERR_EBUSY = 4,
 241         ERR_ECMDUNKNOWN = 5,
 242         ERR_EBADSTATE = 6,
 243         ERR_ENOMEM = 7,
 244         ERR_ETIMEDOUT = 8,
 245         ERR_ELINKDOWN = 9,
 246         ERR_EMAXRES = 10,
 247 };
 248
 249 struct vnic_devcmd_fw_info {
 250         char fw_version[32];
 251         char fw_build[32];
 252         char hw_version[32];
 253         char hw_serial_number[32];
 254 };
 255
 256 struct vnic_devcmd_notify {
 257         u32 csum;               /* checksum over following words */
 258
 259         u32 link_state;         /* link up == 1 */
 260         u32 port_speed;         /* effective port speed (rate limit) */
 261         u32 mtu;                /* MTU */
 262         u32 msglvl;             /* requested driver msg lvl */
 263         u32 uif;                /* uplink interface */
 264         u32 status;             /* status bits (see VNIC_STF_*) */
 265         u32 error;              /* error code (see ERR_*) for first ERR */
 266         u32 link_down_cnt;      /* running count of link down transitions */
 267         u32 perbi_rebuild_cnt;  /* running count of perbi rebuilds */
 268 };
 269 #define VNIC_STF_FATAL_ERR      0x0001  /* fatal fw error */
 270 #define VNIC_STF_STD_PAUSE      0x0002  /* standard link-level pause on */
 271 #define VNIC_STF_PFC_PAUSE      0x0004  /* priority flow control pause on */
 272 /* all supported status flags */
 273 #define VNIC_STF_ALL            (VNIC_STF_FATAL_ERR |\
 274                                  VNIC_STF_STD_PAUSE |\
 275                                  VNIC_STF_PFC_PAUSE |\
 276                                  0)
 277
 278 struct vnic_devcmd_provinfo {
 279         u8 oui[3];
 280         u8 type;
 281         u8 data[0];
 282 };
 283
 284 /*
 285  * Writing cmd register causes STAT_BUSY to get set in status register.
 286  * When cmd completes, STAT_BUSY will be cleared.
 287  *
 288  * If cmd completed successfully STAT_ERROR will be clear
 289  * and args registers contain cmd-specific results.
 290  *
 291  * If cmd error, STAT_ERROR will be set and args[0] contains error code.
 292  *
 293  * status register is read-only.  While STAT_BUSY is set,
 294  * all other register contents are read-only.
 295  */
 296
 297 /* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
 298 #define VNIC_DEVCMD_NARGS 15
 299 struct vnic_devcmd {
 300         u32 status;                     /* RO */
 301         u32 cmd;                        /* RW */
 302         u64 args[VNIC_DEVCMD_NARGS];    /* RW cmd args (little-endian) */
 303 };
 304
 305 #endif /* _VNIC_DEVCMD_H_ */