1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* Copyright 2014 Cisco Systems, Inc. All rights reserved. */ 3 4#ifndef _VNIC_DEVCMD_H_ 5#define _VNIC_DEVCMD_H_ 6 7#define _CMD_NBITS 14 8#define _CMD_VTYPEBITS 10 9#define _CMD_FLAGSBITS 6 10#define _CMD_DIRBITS 2 11 12#define _CMD_NMASK ((1 << _CMD_NBITS)-1) 13#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1) 14#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1) 15#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1) 16 17#define _CMD_NSHIFT 0 18#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS) 19#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS) 20#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS) 21 22/* 23 * Direction bits (from host perspective). 24 */ 25#define _CMD_DIR_NONE 0U 26#define _CMD_DIR_WRITE 1U 27#define _CMD_DIR_READ 2U 28#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ) 29 30/* 31 * Flag bits. 32 */ 33#define _CMD_FLAGS_NONE 0U 34#define _CMD_FLAGS_NOWAIT 1U 35 36/* 37 * vNIC type bits. 38 */ 39#define _CMD_VTYPE_NONE 0U 40#define _CMD_VTYPE_ENET 1U 41#define _CMD_VTYPE_FC 2U 42#define _CMD_VTYPE_SCSI 4U 43#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI) 44 45/* 46 * Used to create cmds.. 47*/ 48#define _CMDCF(dir, flags, vtype, nr) \ 49 (((dir) << _CMD_DIRSHIFT) | \ 50 ((flags) << _CMD_FLAGSSHIFT) | \ 51 ((vtype) << _CMD_VTYPESHIFT) | \ 52 ((nr) << _CMD_NSHIFT)) 53#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr) 54#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr) 55 56/* 57 * Used to decode cmds.. 58*/ 59#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK) 60#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK) 61#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK) 62#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK) 63 64enum vnic_devcmd_cmd { 65 CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0), 66 67 /* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */ 68 CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1), 69 70 /* dev-specific block member: 71 * in: (u16)a0=offset,(u8)a1=size 72 * out: a0=value */ 73 CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2), 74 75 /* stats clear */ 76 CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3), 77 78 /* stats dump in mem: (u64)a0=paddr to stats area, 79 * (u16)a1=sizeof stats area */ 80 CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4), 81 82 /* nic_cfg in (u32)a0 */ 83 CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16), 84 85 /* set struct vnic_devcmd_notify buffer in mem: 86 * in: 87 * (u64)a0=paddr to notify (set paddr=0 to unset) 88 * (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify) 89 * (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr) 90 * out: 91 * (u32)a1 = effective size 92 */ 93 CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21), 94 95 /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */ 96 CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23), 97 98 /* open status: 99 * out: a0=0 open complete, a0=1 open in progress */ 100 CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24), 101 102 /* close vnic */ 103 CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25), 104 105 /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */ 106 CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26), 107 108 /* enable virtual link */ 109 CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), 110 111 /* enable virtual link, waiting variant. */ 112 CMD_ENABLE_WAIT = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28), 113 114 /* disable virtual link */ 115 CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29), 116 117 /* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */ 118 CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30), 119 120 /* init status: 121 * out: a0=0 init complete, a0=1 init in progress 122 * if a0=0, a1=errno */ 123 CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31), 124 125 /* undo initialize of virtual link */ 126 CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34), 127 128 /* check fw capability of a cmd: 129 * in: (u32)a0=cmd 130 * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */ 131 CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36), 132 133 /* 134 * Initialization for the devcmd2 interface. 135 * in: (u64) a0=host result buffer physical address 136 * in: (u16) a1=number of entries in result buffer 137 */ 138 CMD_INITIALIZE_DEVCMD2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 57) 139}; 140 141/* flags for CMD_OPEN */ 142#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */ 143 144/* flags for CMD_INIT */ 145#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */ 146 147/* flags for CMD_PACKET_FILTER */ 148#define CMD_PFILTER_DIRECTED 0x01 149#define CMD_PFILTER_MULTICAST 0x02 150#define CMD_PFILTER_BROADCAST 0x04 151#define CMD_PFILTER_PROMISCUOUS 0x08 152#define CMD_PFILTER_ALL_MULTICAST 0x10 153 154enum vnic_devcmd_status { 155 STAT_NONE = 0, 156 STAT_BUSY = 1 << 0, /* cmd in progress */ 157 STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */ 158}; 159 160enum vnic_devcmd_error { 161 ERR_SUCCESS = 0, 162 ERR_EINVAL = 1, 163 ERR_EFAULT = 2, 164 ERR_EPERM = 3, 165 ERR_EBUSY = 4, 166 ERR_ECMDUNKNOWN = 5, 167 ERR_EBADSTATE = 6, 168 ERR_ENOMEM = 7, 169 ERR_ETIMEDOUT = 8, 170 ERR_ELINKDOWN = 9, 171}; 172 173struct vnic_devcmd_fw_info { 174 char fw_version[32]; 175 char fw_build[32]; 176 char hw_version[32]; 177 char hw_serial_number[32]; 178}; 179 180struct vnic_devcmd_notify { 181 u32 csum; /* checksum over following words */ 182 183 u32 link_state; /* link up == 1 */ 184 u32 port_speed; /* effective port speed (rate limit) */ 185 u32 mtu; /* MTU */ 186 u32 msglvl; /* requested driver msg lvl */ 187 u32 uif; /* uplink interface */ 188 u32 status; /* status bits (see VNIC_STF_*) */ 189 u32 error; /* error code (see ERR_*) for first ERR */ 190 u32 link_down_cnt; /* running count of link down transitions */ 191}; 192#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */ 193 194struct vnic_devcmd_provinfo { 195 u8 oui[3]; 196 u8 type; 197 u8 data[]; 198}; 199 200/* 201 * Writing cmd register causes STAT_BUSY to get set in status register. 202 * When cmd completes, STAT_BUSY will be cleared. 203 * 204 * If cmd completed successfully STAT_ERROR will be clear 205 * and args registers contain cmd-specific results. 206 * 207 * If cmd error, STAT_ERROR will be set and args[0] contains error code. 208 * 209 * status register is read-only. While STAT_BUSY is set, 210 * all other register contents are read-only. 211 */ 212 213/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */ 214#define VNIC_DEVCMD_NARGS 15 215struct vnic_devcmd { 216 u32 status; /* RO */ 217 u32 cmd; /* RW */ 218 u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */ 219}; 220 221 222/* 223 * Version 2 of the interface. 224 * 225 * Some things are carried over, notably the vnic_devcmd_cmd enum. 226 */ 227 228/* 229 * Flags for vnic_devcmd2.flags 230 */ 231 232#define DEVCMD2_FNORESULT 0x1 /* Don't copy result to host */ 233 234#define VNIC_DEVCMD2_NARGS VNIC_DEVCMD_NARGS 235struct vnic_devcmd2 { 236 u16 pad; 237 u16 flags; 238 u32 cmd; /* same command #defines as original */ 239 u64 args[VNIC_DEVCMD2_NARGS]; 240}; 241 242#define VNIC_DEVCMD2_NRESULTS VNIC_DEVCMD_NARGS 243struct devcmd2_result { 244 u64 results[VNIC_DEVCMD2_NRESULTS]; 245 u32 pad; 246 u16 completed_index; /* into copy WQ */ 247 u8 error; /* same error codes as original */ 248 u8 color; /* 0 or 1 as with completion queues */ 249}; 250 251#define DEVCMD2_RING_SIZE 32 252#define DEVCMD2_DESC_SIZE 128 253 254#define DEVCMD2_RESULTS_SIZE_MAX ((1 << 16) - 1) 255 256#endif /* _VNIC_DEVCMD_H_ */ 257