David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * QLogic iSCSI HBA Driver |
Vikas Chaudhary | 7d01d06 | 2010-12-02 22:12:51 -0800 | [diff] [blame] | 3 | * Copyright (c) 2003-2010 QLogic Corporation |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 4 | * |
| 5 | * See LICENSE.qla4xxx for copyright and licensing details. |
| 6 | */ |
| 7 | |
| 8 | #include "ql4_def.h" |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 9 | #include "ql4_glbl.h" |
| 10 | #include "ql4_dbg.h" |
| 11 | #include "ql4_inline.h" |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 12 | |
| 13 | /** |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 14 | * qla4xxx_copy_sense - copy sense data into cmd sense buffer |
| 15 | * @ha: Pointer to host adapter structure. |
| 16 | * @sts_entry: Pointer to status entry structure. |
| 17 | * @srb: Pointer to srb structure. |
| 18 | **/ |
| 19 | static void qla4xxx_copy_sense(struct scsi_qla_host *ha, |
| 20 | struct status_entry *sts_entry, |
| 21 | struct srb *srb) |
| 22 | { |
| 23 | struct scsi_cmnd *cmd = srb->cmd; |
| 24 | uint16_t sense_len; |
| 25 | |
| 26 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
| 27 | sense_len = le16_to_cpu(sts_entry->senseDataByteCnt); |
Prasanna Mumbai | 6d78bd5 | 2011-05-17 23:17:06 -0700 | [diff] [blame] | 28 | if (sense_len == 0) { |
| 29 | DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%d: %s:" |
| 30 | " sense len 0\n", ha->host_no, |
| 31 | cmd->device->channel, cmd->device->id, |
| 32 | cmd->device->lun, __func__)); |
| 33 | ha->status_srb = NULL; |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 34 | return; |
Prasanna Mumbai | 6d78bd5 | 2011-05-17 23:17:06 -0700 | [diff] [blame] | 35 | } |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 36 | /* Save total available sense length, |
| 37 | * not to exceed cmd's sense buffer size */ |
| 38 | sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE); |
| 39 | srb->req_sense_ptr = cmd->sense_buffer; |
| 40 | srb->req_sense_len = sense_len; |
| 41 | |
| 42 | /* Copy sense from sts_entry pkt */ |
| 43 | sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN); |
| 44 | memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len); |
| 45 | |
| 46 | DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, " |
| 47 | "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no, |
| 48 | cmd->device->channel, cmd->device->id, |
| 49 | cmd->device->lun, __func__, |
| 50 | sts_entry->senseData[2] & 0x0f, |
| 51 | sts_entry->senseData[7], |
| 52 | sts_entry->senseData[12], |
| 53 | sts_entry->senseData[13])); |
| 54 | |
| 55 | DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len)); |
| 56 | srb->flags |= SRB_GOT_SENSE; |
| 57 | |
| 58 | /* Update srb, in case a sts_cont pkt follows */ |
| 59 | srb->req_sense_ptr += sense_len; |
| 60 | srb->req_sense_len -= sense_len; |
| 61 | if (srb->req_sense_len != 0) |
| 62 | ha->status_srb = srb; |
| 63 | else |
| 64 | ha->status_srb = NULL; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * qla4xxx_status_cont_entry - Process a Status Continuations entry. |
| 69 | * @ha: SCSI driver HA context |
| 70 | * @sts_cont: Entry pointer |
| 71 | * |
| 72 | * Extended sense data. |
| 73 | */ |
| 74 | static void |
| 75 | qla4xxx_status_cont_entry(struct scsi_qla_host *ha, |
| 76 | struct status_cont_entry *sts_cont) |
| 77 | { |
| 78 | struct srb *srb = ha->status_srb; |
| 79 | struct scsi_cmnd *cmd; |
Vikas Chaudhary | 735e415 | 2010-10-06 22:48:53 -0700 | [diff] [blame] | 80 | uint16_t sense_len; |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 81 | |
| 82 | if (srb == NULL) |
| 83 | return; |
| 84 | |
| 85 | cmd = srb->cmd; |
| 86 | if (cmd == NULL) { |
| 87 | DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned " |
| 88 | "back to OS srb=%p srb->state:%d\n", ha->host_no, |
| 89 | __func__, srb, srb->state)); |
| 90 | ha->status_srb = NULL; |
| 91 | return; |
| 92 | } |
| 93 | |
| 94 | /* Copy sense data. */ |
| 95 | sense_len = min_t(uint16_t, srb->req_sense_len, |
| 96 | IOCB_MAX_EXT_SENSEDATA_LEN); |
| 97 | memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len); |
| 98 | DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len)); |
| 99 | |
| 100 | srb->req_sense_ptr += sense_len; |
| 101 | srb->req_sense_len -= sense_len; |
| 102 | |
| 103 | /* Place command on done queue. */ |
| 104 | if (srb->req_sense_len == 0) { |
Vikas Chaudhary | 09a0f71 | 2010-04-28 11:42:24 +0530 | [diff] [blame] | 105 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 106 | ha->status_srb = NULL; |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | /** |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 111 | * qla4xxx_status_entry - processes status IOCBs |
| 112 | * @ha: Pointer to host adapter structure. |
| 113 | * @sts_entry: Pointer to status entry structure. |
| 114 | **/ |
| 115 | static void qla4xxx_status_entry(struct scsi_qla_host *ha, |
| 116 | struct status_entry *sts_entry) |
| 117 | { |
| 118 | uint8_t scsi_status; |
| 119 | struct scsi_cmnd *cmd; |
| 120 | struct srb *srb; |
| 121 | struct ddb_entry *ddb_entry; |
| 122 | uint32_t residual; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 123 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 124 | srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle)); |
| 125 | if (!srb) { |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 126 | DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid " |
| 127 | "handle 0x%x, sp=%p. This cmd may have already " |
| 128 | "been completed.\n", ha->host_no, __func__, |
| 129 | le32_to_cpu(sts_entry->handle), srb)); |
Vikas Chaudhary | c2660df | 2010-07-10 14:51:02 +0530 | [diff] [blame] | 130 | ql4_printk(KERN_WARNING, ha, "%s invalid status entry:" |
| 131 | " handle=0x%0x\n", __func__, sts_entry->handle); |
David C Somayajulu | 9d56291 | 2008-03-19 11:23:03 -0700 | [diff] [blame] | 132 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 133 | return; |
| 134 | } |
| 135 | |
| 136 | cmd = srb->cmd; |
| 137 | if (cmd == NULL) { |
| 138 | DEBUG2(printk("scsi%ld: %s: Command already returned back to " |
| 139 | "OS pkt->handle=%d srb=%p srb->state:%d\n", |
| 140 | ha->host_no, __func__, sts_entry->handle, |
| 141 | srb, srb->state)); |
Vikas Chaudhary | c2660df | 2010-07-10 14:51:02 +0530 | [diff] [blame] | 142 | ql4_printk(KERN_WARNING, ha, "Command is NULL:" |
| 143 | " already returned to OS (srb=%p)\n", srb); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 144 | return; |
| 145 | } |
| 146 | |
| 147 | ddb_entry = srb->ddb; |
| 148 | if (ddb_entry == NULL) { |
| 149 | cmd->result = DID_NO_CONNECT << 16; |
| 150 | goto status_entry_exit; |
| 151 | } |
| 152 | |
| 153 | residual = le32_to_cpu(sts_entry->residualByteCnt); |
| 154 | |
| 155 | /* Translate ISP error to a Linux SCSI error. */ |
| 156 | scsi_status = sts_entry->scsiStatus; |
| 157 | switch (sts_entry->completionStatus) { |
| 158 | case SCS_COMPLETE: |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 159 | |
David C Somayajulu | 6ea7e33 | 2007-07-09 12:44:36 -0700 | [diff] [blame] | 160 | if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) { |
| 161 | cmd->result = DID_ERROR << 16; |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) { |
FUJITA Tomonori | 5f7186c | 2007-05-26 14:08:20 +0900 | [diff] [blame] | 166 | scsi_set_resid(cmd, residual); |
David C Somayajulu | 9d56291 | 2008-03-19 11:23:03 -0700 | [diff] [blame] | 167 | if (!scsi_status && ((scsi_bufflen(cmd) - residual) < |
| 168 | cmd->underflow)) { |
David C Somayajulu | 6ea7e33 | 2007-07-09 12:44:36 -0700 | [diff] [blame] | 169 | |
| 170 | cmd->result = DID_ERROR << 16; |
| 171 | |
| 172 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " |
| 173 | "Mid-layer Data underrun0, " |
| 174 | "xferlen = 0x%x, " |
| 175 | "residual = 0x%x\n", ha->host_no, |
| 176 | cmd->device->channel, |
| 177 | cmd->device->id, |
| 178 | cmd->device->lun, __func__, |
| 179 | scsi_bufflen(cmd), residual)); |
| 180 | break; |
| 181 | } |
| 182 | } |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 183 | |
| 184 | cmd->result = DID_OK << 16 | scsi_status; |
| 185 | |
| 186 | if (scsi_status != SCSI_CHECK_CONDITION) |
| 187 | break; |
| 188 | |
| 189 | /* Copy Sense Data into sense buffer. */ |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 190 | qla4xxx_copy_sense(ha, sts_entry, srb); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 191 | break; |
| 192 | |
| 193 | case SCS_INCOMPLETE: |
| 194 | /* Always set the status to DID_ERROR, since |
| 195 | * all conditions result in that status anyway */ |
| 196 | cmd->result = DID_ERROR << 16; |
| 197 | break; |
| 198 | |
| 199 | case SCS_RESET_OCCURRED: |
| 200 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n", |
| 201 | ha->host_no, cmd->device->channel, |
| 202 | cmd->device->id, cmd->device->lun, __func__)); |
| 203 | |
| 204 | cmd->result = DID_RESET << 16; |
| 205 | break; |
| 206 | |
| 207 | case SCS_ABORTED: |
| 208 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n", |
| 209 | ha->host_no, cmd->device->channel, |
| 210 | cmd->device->id, cmd->device->lun, __func__)); |
| 211 | |
| 212 | cmd->result = DID_RESET << 16; |
| 213 | break; |
| 214 | |
| 215 | case SCS_TIMEOUT: |
| 216 | DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n", |
| 217 | ha->host_no, cmd->device->channel, |
| 218 | cmd->device->id, cmd->device->lun)); |
| 219 | |
Mike Christie | 56d7fcf | 2008-08-19 18:45:26 -0500 | [diff] [blame] | 220 | cmd->result = DID_TRANSPORT_DISRUPTED << 16; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 221 | |
| 222 | /* |
| 223 | * Mark device missing so that we won't continue to send |
| 224 | * I/O to this device. We should get a ddb state change |
| 225 | * AEN soon. |
| 226 | */ |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 227 | if (iscsi_is_session_online(ddb_entry->sess)) |
| 228 | qla4xxx_mark_device_missing(ddb_entry->sess); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 229 | break; |
| 230 | |
| 231 | case SCS_DATA_UNDERRUN: |
| 232 | case SCS_DATA_OVERRUN: |
David C Somayajulu | 6ea7e33 | 2007-07-09 12:44:36 -0700 | [diff] [blame] | 233 | if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) || |
Mike Christie | b06fc73 | 2009-08-20 15:11:00 -0500 | [diff] [blame] | 234 | (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { |
| 235 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n", |
| 236 | ha->host_no, |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 237 | cmd->device->channel, cmd->device->id, |
Mike Christie | b06fc73 | 2009-08-20 15:11:00 -0500 | [diff] [blame] | 238 | cmd->device->lun, __func__)); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 239 | |
| 240 | cmd->result = DID_ERROR << 16; |
| 241 | break; |
| 242 | } |
| 243 | |
David C Somayajulu | 6ea7e33 | 2007-07-09 12:44:36 -0700 | [diff] [blame] | 244 | scsi_set_resid(cmd, residual); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 245 | |
| 246 | /* |
| 247 | * If there is scsi_status, it takes precedense over |
| 248 | * underflow condition. |
| 249 | */ |
| 250 | if (scsi_status != 0) { |
| 251 | cmd->result = DID_OK << 16 | scsi_status; |
| 252 | |
| 253 | if (scsi_status != SCSI_CHECK_CONDITION) |
| 254 | break; |
| 255 | |
| 256 | /* Copy Sense Data into sense buffer. */ |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 257 | qla4xxx_copy_sense(ha, sts_entry, srb); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 258 | } else { |
| 259 | /* |
| 260 | * If RISC reports underrun and target does not |
| 261 | * report it then we must have a lost frame, so |
| 262 | * tell upper layer to retry it by reporting a |
| 263 | * bus busy. |
| 264 | */ |
| 265 | if ((sts_entry->iscsiFlags & |
| 266 | ISCSI_FLAG_RESIDUAL_UNDER) == 0) { |
| 267 | cmd->result = DID_BUS_BUSY << 16; |
FUJITA Tomonori | 5f7186c | 2007-05-26 14:08:20 +0900 | [diff] [blame] | 268 | } else if ((scsi_bufflen(cmd) - residual) < |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 269 | cmd->underflow) { |
| 270 | /* |
| 271 | * Handle mid-layer underflow??? |
| 272 | * |
| 273 | * For kernels less than 2.4, the driver must |
| 274 | * return an error if an underflow is detected. |
| 275 | * For kernels equal-to and above 2.4, the |
| 276 | * mid-layer will appearantly handle the |
| 277 | * underflow by detecting the residual count -- |
| 278 | * unfortunately, we do not see where this is |
| 279 | * actually being done. In the interim, we |
| 280 | * will return DID_ERROR. |
| 281 | */ |
| 282 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " |
David C Somayajulu | 6ea7e33 | 2007-07-09 12:44:36 -0700 | [diff] [blame] | 283 | "Mid-layer Data underrun1, " |
| 284 | "xferlen = 0x%x, " |
| 285 | "residual = 0x%x\n", ha->host_no, |
| 286 | cmd->device->channel, |
| 287 | cmd->device->id, |
| 288 | cmd->device->lun, __func__, |
| 289 | scsi_bufflen(cmd), residual)); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 290 | |
| 291 | cmd->result = DID_ERROR << 16; |
| 292 | } else { |
| 293 | cmd->result = DID_OK << 16; |
| 294 | } |
| 295 | } |
| 296 | break; |
| 297 | |
| 298 | case SCS_DEVICE_LOGGED_OUT: |
| 299 | case SCS_DEVICE_UNAVAILABLE: |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 300 | DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: SCS_DEVICE " |
| 301 | "state: 0x%x\n", ha->host_no, |
| 302 | cmd->device->channel, cmd->device->id, |
| 303 | cmd->device->lun, sts_entry->completionStatus)); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 304 | /* |
| 305 | * Mark device missing so that we won't continue to |
| 306 | * send I/O to this device. We should get a ddb |
| 307 | * state change AEN soon. |
| 308 | */ |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 309 | if (iscsi_is_session_online(ddb_entry->sess)) |
| 310 | qla4xxx_mark_device_missing(ddb_entry->sess); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 311 | |
Mike Christie | 56d7fcf | 2008-08-19 18:45:26 -0500 | [diff] [blame] | 312 | cmd->result = DID_TRANSPORT_DISRUPTED << 16; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 313 | break; |
| 314 | |
| 315 | case SCS_QUEUE_FULL: |
| 316 | /* |
| 317 | * SCSI Mid-Layer handles device queue full |
| 318 | */ |
| 319 | cmd->result = DID_OK << 16 | sts_entry->scsiStatus; |
| 320 | DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected " |
| 321 | "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x," |
| 322 | " iResp=%02x\n", ha->host_no, cmd->device->id, |
| 323 | cmd->device->lun, __func__, |
| 324 | sts_entry->completionStatus, |
| 325 | sts_entry->scsiStatus, sts_entry->state_flags, |
| 326 | sts_entry->iscsiFlags, |
| 327 | sts_entry->iscsiResponse)); |
| 328 | break; |
| 329 | |
| 330 | default: |
| 331 | cmd->result = DID_ERROR << 16; |
| 332 | break; |
| 333 | } |
| 334 | |
| 335 | status_entry_exit: |
| 336 | |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 337 | /* complete the request, if not waiting for status_continuation pkt */ |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 338 | srb->cc_stat = sts_entry->completionStatus; |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 339 | if (ha->status_srb == NULL) |
Vikas Chaudhary | 09a0f71 | 2010-04-28 11:42:24 +0530 | [diff] [blame] | 340 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | /** |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 344 | * qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C) |
| 345 | * @ha: Pointer to host adapter structure. |
| 346 | * @sts_entry: Pointer to status entry structure. |
| 347 | **/ |
| 348 | static void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha, |
| 349 | struct passthru_status *sts_entry) |
| 350 | { |
| 351 | struct iscsi_task *task; |
| 352 | struct ddb_entry *ddb_entry; |
| 353 | struct ql4_task_data *task_data; |
| 354 | struct iscsi_cls_conn *cls_conn; |
| 355 | struct iscsi_conn *conn; |
| 356 | itt_t itt; |
| 357 | uint32_t fw_ddb_index; |
| 358 | |
| 359 | itt = sts_entry->handle; |
| 360 | fw_ddb_index = le32_to_cpu(sts_entry->target); |
| 361 | |
| 362 | ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index); |
| 363 | |
| 364 | if (ddb_entry == NULL) { |
| 365 | ql4_printk(KERN_ERR, ha, "%s: Invalid target index = 0x%x\n", |
| 366 | __func__, sts_entry->target); |
| 367 | return; |
| 368 | } |
| 369 | |
| 370 | cls_conn = ddb_entry->conn; |
| 371 | conn = cls_conn->dd_data; |
| 372 | spin_lock(&conn->session->lock); |
| 373 | task = iscsi_itt_to_task(conn, itt); |
| 374 | spin_unlock(&conn->session->lock); |
| 375 | |
| 376 | if (task == NULL) { |
| 377 | ql4_printk(KERN_ERR, ha, "%s: Task is NULL\n", __func__); |
| 378 | return; |
| 379 | } |
| 380 | |
| 381 | task_data = task->dd_data; |
| 382 | memcpy(&task_data->sts, sts_entry, sizeof(struct passthru_status)); |
| 383 | ha->req_q_count += task_data->iocb_req_cnt; |
| 384 | ha->iocb_cnt -= task_data->iocb_req_cnt; |
| 385 | queue_work(ha->task_wq, &task_data->task_work); |
| 386 | } |
| 387 | |
| 388 | /** |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 389 | * qla4xxx_process_response_queue - process response queue completions |
| 390 | * @ha: Pointer to host adapter structure. |
| 391 | * |
| 392 | * This routine process response queue completions in interrupt context. |
| 393 | * Hardware_lock locked upon entry |
| 394 | **/ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 395 | void qla4xxx_process_response_queue(struct scsi_qla_host *ha) |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 396 | { |
| 397 | uint32_t count = 0; |
| 398 | struct srb *srb = NULL; |
| 399 | struct status_entry *sts_entry; |
| 400 | |
| 401 | /* Process all responses from response queue */ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 402 | while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) { |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 403 | sts_entry = (struct status_entry *) ha->response_ptr; |
| 404 | count++; |
| 405 | |
| 406 | /* Advance pointers for next entry */ |
| 407 | if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) { |
| 408 | ha->response_out = 0; |
| 409 | ha->response_ptr = ha->response_ring; |
| 410 | } else { |
| 411 | ha->response_out++; |
| 412 | ha->response_ptr++; |
| 413 | } |
| 414 | |
| 415 | /* process entry */ |
| 416 | switch (sts_entry->hdr.entryType) { |
| 417 | case ET_STATUS: |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 418 | /* Common status */ |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 419 | qla4xxx_status_entry(ha, sts_entry); |
| 420 | break; |
| 421 | |
| 422 | case ET_PASSTHRU_STATUS: |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 423 | if (sts_entry->hdr.systemDefined == SD_ISCSI_PDU) |
| 424 | qla4xxx_passthru_status_entry(ha, |
| 425 | (struct passthru_status *)sts_entry); |
| 426 | else |
| 427 | ql4_printk(KERN_ERR, ha, |
| 428 | "%s: Invalid status received\n", |
| 429 | __func__); |
| 430 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 431 | break; |
| 432 | |
| 433 | case ET_STATUS_CONTINUATION: |
Karen Higgins | 94bced3 | 2009-07-15 15:02:58 -0500 | [diff] [blame] | 434 | qla4xxx_status_cont_entry(ha, |
| 435 | (struct status_cont_entry *) sts_entry); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 436 | break; |
| 437 | |
| 438 | case ET_COMMAND: |
| 439 | /* ISP device queue is full. Command not |
| 440 | * accepted by ISP. Queue command for |
| 441 | * later */ |
| 442 | |
| 443 | srb = qla4xxx_del_from_active_array(ha, |
| 444 | le32_to_cpu(sts_entry-> |
| 445 | handle)); |
| 446 | if (srb == NULL) |
| 447 | goto exit_prq_invalid_handle; |
| 448 | |
| 449 | DEBUG2(printk("scsi%ld: %s: FW device queue full, " |
| 450 | "srb %p\n", ha->host_no, __func__, srb)); |
| 451 | |
| 452 | /* ETRY normally by sending it back with |
| 453 | * DID_BUS_BUSY */ |
| 454 | srb->cmd->result = DID_BUS_BUSY << 16; |
Vikas Chaudhary | 09a0f71 | 2010-04-28 11:42:24 +0530 | [diff] [blame] | 455 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 456 | break; |
| 457 | |
| 458 | case ET_CONTINUE: |
| 459 | /* Just throw away the continuation entries */ |
| 460 | DEBUG2(printk("scsi%ld: %s: Continuation entry - " |
| 461 | "ignoring\n", ha->host_no, __func__)); |
| 462 | break; |
| 463 | |
| 464 | default: |
| 465 | /* |
| 466 | * Invalid entry in response queue, reset RISC |
| 467 | * firmware. |
| 468 | */ |
| 469 | DEBUG2(printk("scsi%ld: %s: Invalid entry %x in " |
| 470 | "response queue \n", ha->host_no, |
| 471 | __func__, |
| 472 | sts_entry->hdr.entryType)); |
| 473 | goto exit_prq_error; |
| 474 | } |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 475 | ((struct response *)sts_entry)->signature = RESPONSE_PROCESSED; |
| 476 | wmb(); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | /* |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 480 | * Tell ISP we're done with response(s). This also clears the interrupt. |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 481 | */ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 482 | ha->isp_ops->complete_iocb(ha); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 483 | |
| 484 | return; |
| 485 | |
| 486 | exit_prq_invalid_handle: |
| 487 | DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n", |
| 488 | ha->host_no, __func__, srb, sts_entry->hdr.entryType, |
| 489 | sts_entry->completionStatus)); |
| 490 | |
| 491 | exit_prq_error: |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 492 | ha->isp_ops->complete_iocb(ha); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 493 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| 494 | } |
| 495 | |
| 496 | /** |
| 497 | * qla4xxx_isr_decode_mailbox - decodes mailbox status |
| 498 | * @ha: Pointer to host adapter structure. |
| 499 | * @mailbox_status: Mailbox status. |
| 500 | * |
| 501 | * This routine decodes the mailbox status during the ISR. |
| 502 | * Hardware_lock locked upon entry. runs in interrupt context. |
| 503 | **/ |
| 504 | static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, |
| 505 | uint32_t mbox_status) |
| 506 | { |
| 507 | int i; |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 508 | uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 509 | |
| 510 | if ((mbox_status == MBOX_STS_BUSY) || |
| 511 | (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) || |
| 512 | (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) { |
| 513 | ha->mbox_status[0] = mbox_status; |
| 514 | |
| 515 | if (test_bit(AF_MBOX_COMMAND, &ha->flags)) { |
| 516 | /* |
| 517 | * Copy all mailbox registers to a temporary |
| 518 | * location and set mailbox command done flag |
| 519 | */ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 520 | for (i = 0; i < ha->mbox_status_count; i++) |
| 521 | ha->mbox_status[i] = is_qla8022(ha) |
| 522 | ? readl(&ha->qla4_8xxx_reg->mailbox_out[i]) |
| 523 | : readl(&ha->reg->mailbox[i]); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 524 | |
| 525 | set_bit(AF_MBOX_COMMAND_DONE, &ha->flags); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 526 | |
| 527 | if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) |
| 528 | complete(&ha->mbx_intr_comp); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 529 | } |
| 530 | } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) { |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 531 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) |
| 532 | mbox_sts[i] = is_qla8022(ha) |
| 533 | ? readl(&ha->qla4_8xxx_reg->mailbox_out[i]) |
| 534 | : readl(&ha->reg->mailbox[i]); |
| 535 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 536 | /* Immediately process the AENs that don't require much work. |
| 537 | * Only queue the database_changed AENs */ |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 538 | if (ha->aen_log.count < MAX_AEN_ENTRIES) { |
| 539 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) |
| 540 | ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] = |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 541 | mbox_sts[i]; |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 542 | ha->aen_log.count++; |
| 543 | } |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 544 | switch (mbox_status) { |
| 545 | case MBOX_ASTS_SYSTEM_ERROR: |
| 546 | /* Log Mailbox registers */ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 547 | ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__); |
Karen Higgins | 91a772a | 2010-10-06 22:50:21 -0700 | [diff] [blame] | 548 | qla4xxx_dump_registers(ha); |
| 549 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 550 | if (ql4xdontresethba) { |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 551 | DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n", |
| 552 | ha->host_no, __func__)); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 553 | } else { |
| 554 | set_bit(AF_GET_CRASH_RECORD, &ha->flags); |
| 555 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| 556 | } |
| 557 | break; |
| 558 | |
| 559 | case MBOX_ASTS_REQUEST_TRANSFER_ERROR: |
| 560 | case MBOX_ASTS_RESPONSE_TRANSFER_ERROR: |
| 561 | case MBOX_ASTS_NVRAM_INVALID: |
| 562 | case MBOX_ASTS_IP_ADDRESS_CHANGED: |
| 563 | case MBOX_ASTS_DHCP_LEASE_EXPIRED: |
| 564 | DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, " |
| 565 | "Reset HA\n", ha->host_no, mbox_status)); |
| 566 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| 567 | break; |
| 568 | |
| 569 | case MBOX_ASTS_LINK_UP: |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 570 | set_bit(AF_LINK_UP, &ha->flags); |
Vikas Chaudhary | 065aa1b | 2010-04-28 11:38:11 +0530 | [diff] [blame] | 571 | if (test_bit(AF_INIT_DONE, &ha->flags)) |
| 572 | set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); |
| 573 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 574 | ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 575 | break; |
| 576 | |
| 577 | case MBOX_ASTS_LINK_DOWN: |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 578 | clear_bit(AF_LINK_UP, &ha->flags); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 579 | if (test_bit(AF_INIT_DONE, &ha->flags)) |
| 580 | set_bit(DPC_LINK_CHANGED, &ha->dpc_flags); |
Vikas Chaudhary | 065aa1b | 2010-04-28 11:38:11 +0530 | [diff] [blame] | 581 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 582 | ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 583 | break; |
| 584 | |
| 585 | case MBOX_ASTS_HEARTBEAT: |
| 586 | ha->seconds_since_last_heartbeat = 0; |
| 587 | break; |
| 588 | |
| 589 | case MBOX_ASTS_DHCP_LEASE_ACQUIRED: |
| 590 | DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE " |
| 591 | "ACQUIRED\n", ha->host_no, mbox_status)); |
| 592 | set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); |
| 593 | break; |
| 594 | |
| 595 | case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM: |
| 596 | case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target |
| 597 | * mode |
| 598 | * only */ |
| 599 | case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */ |
| 600 | case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR: |
| 601 | case MBOX_ASTS_SUBNET_STATE_CHANGE: |
Prasanna Mumbai | 185f107 | 2011-05-17 23:17:03 -0700 | [diff] [blame] | 602 | case MBOX_ASTS_DUPLICATE_IP: |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 603 | /* No action */ |
| 604 | DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no, |
| 605 | mbox_status)); |
| 606 | break; |
| 607 | |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 608 | case MBOX_ASTS_IP_ADDR_STATE_CHANGED: |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 609 | printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, " |
| 610 | "mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0], |
| 611 | mbox_sts[2], mbox_sts[3]); |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 612 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 613 | /* mbox_sts[2] = Old ACB state |
| 614 | * mbox_sts[3] = new ACB state */ |
| 615 | if ((mbox_sts[3] == ACB_STATE_VALID) && |
Prasanna Mumbai | e128271 | 2010-12-02 22:12:43 -0800 | [diff] [blame] | 616 | ((mbox_sts[2] == ACB_STATE_TENTATIVE) || |
| 617 | (mbox_sts[2] == ACB_STATE_ACQUIRING))) |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 618 | set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 619 | else if ((mbox_sts[3] == ACB_STATE_ACQUIRING) && |
| 620 | (mbox_sts[2] == ACB_STATE_VALID)) |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 621 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
Vikas Chaudhary | 95d3126 | 2011-08-12 02:51:29 -0700 | [diff] [blame^] | 622 | else if ((mbox_sts[3] == ACB_STATE_UNCONFIGURED)) |
| 623 | complete(&ha->disable_acb_comp); |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 624 | break; |
| 625 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 626 | case MBOX_ASTS_MAC_ADDRESS_CHANGED: |
| 627 | case MBOX_ASTS_DNS: |
| 628 | /* No action */ |
| 629 | DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, " |
| 630 | "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n", |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 631 | ha->host_no, mbox_sts[0], |
| 632 | mbox_sts[1], mbox_sts[2])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 633 | break; |
| 634 | |
| 635 | case MBOX_ASTS_SELF_TEST_FAILED: |
| 636 | case MBOX_ASTS_LOGIN_FAILED: |
| 637 | /* No action */ |
| 638 | DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, " |
| 639 | "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n", |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 640 | ha->host_no, mbox_sts[0], mbox_sts[1], |
| 641 | mbox_sts[2], mbox_sts[3])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 642 | break; |
| 643 | |
| 644 | case MBOX_ASTS_DATABASE_CHANGED: |
| 645 | /* Queue AEN information and process it in the DPC |
| 646 | * routine */ |
| 647 | if (ha->aen_q_count > 0) { |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 648 | |
| 649 | /* decrement available counter */ |
| 650 | ha->aen_q_count--; |
| 651 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 652 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 653 | ha->aen_q[ha->aen_in].mbox_sts[i] = |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 654 | mbox_sts[i]; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 655 | |
| 656 | /* print debug message */ |
Prasanna Mumbai | 185f107 | 2011-05-17 23:17:03 -0700 | [diff] [blame] | 657 | DEBUG2(printk("scsi%ld: AEN[%d] %04x queued " |
| 658 | "mb1:0x%x mb2:0x%x mb3:0x%x " |
| 659 | "mb4:0x%x mb5:0x%x\n", |
| 660 | ha->host_no, ha->aen_in, |
| 661 | mbox_sts[0], mbox_sts[1], |
| 662 | mbox_sts[2], mbox_sts[3], |
| 663 | mbox_sts[4], mbox_sts[5])); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 664 | |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 665 | /* advance pointer */ |
| 666 | ha->aen_in++; |
| 667 | if (ha->aen_in == MAX_AEN_ENTRIES) |
| 668 | ha->aen_in = 0; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 669 | |
| 670 | /* The DPC routine will process the aen */ |
| 671 | set_bit(DPC_AEN, &ha->dpc_flags); |
| 672 | } else { |
| 673 | DEBUG2(printk("scsi%ld: %s: aen %04x, queue " |
| 674 | "overflowed! AEN LOST!!\n", |
| 675 | ha->host_no, __func__, |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 676 | mbox_sts[0])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 677 | |
| 678 | DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n", |
| 679 | ha->host_no)); |
| 680 | |
| 681 | for (i = 0; i < MAX_AEN_ENTRIES; i++) { |
| 682 | DEBUG2(printk("AEN[%d] %04x %04x %04x " |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 683 | "%04x\n", i, mbox_sts[0], |
| 684 | mbox_sts[1], mbox_sts[2], |
| 685 | mbox_sts[3])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 686 | } |
| 687 | } |
| 688 | break; |
| 689 | |
Shyam Sundar | 6434080 | 2010-10-06 22:49:40 -0700 | [diff] [blame] | 690 | case MBOX_ASTS_TXSCVR_INSERTED: |
| 691 | DEBUG2(printk(KERN_WARNING |
| 692 | "scsi%ld: AEN %04x Transceiver" |
| 693 | " inserted\n", ha->host_no, mbox_sts[0])); |
| 694 | break; |
| 695 | |
| 696 | case MBOX_ASTS_TXSCVR_REMOVED: |
| 697 | DEBUG2(printk(KERN_WARNING |
| 698 | "scsi%ld: AEN %04x Transceiver" |
| 699 | " removed\n", ha->host_no, mbox_sts[0])); |
| 700 | break; |
| 701 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 702 | default: |
| 703 | DEBUG2(printk(KERN_WARNING |
| 704 | "scsi%ld: AEN %04x UNKNOWN\n", |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 705 | ha->host_no, mbox_sts[0])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 706 | break; |
| 707 | } |
| 708 | } else { |
| 709 | DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n", |
| 710 | ha->host_no, mbox_status)); |
| 711 | |
| 712 | ha->mbox_status[0] = mbox_status; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /** |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 717 | * qla4_8xxx_interrupt_service_routine - isr |
| 718 | * @ha: pointer to host adapter structure. |
| 719 | * |
| 720 | * This is the main interrupt service routine. |
| 721 | * hardware_lock locked upon entry. runs in interrupt context. |
| 722 | **/ |
| 723 | void qla4_8xxx_interrupt_service_routine(struct scsi_qla_host *ha, |
| 724 | uint32_t intr_status) |
| 725 | { |
| 726 | /* Process response queue interrupt. */ |
| 727 | if (intr_status & HSRX_RISC_IOCB_INT) |
| 728 | qla4xxx_process_response_queue(ha); |
| 729 | |
| 730 | /* Process mailbox/asynch event interrupt.*/ |
| 731 | if (intr_status & HSRX_RISC_MB_INT) |
| 732 | qla4xxx_isr_decode_mailbox(ha, |
| 733 | readl(&ha->qla4_8xxx_reg->mailbox_out[0])); |
| 734 | |
| 735 | /* clear the interrupt */ |
| 736 | writel(0, &ha->qla4_8xxx_reg->host_int); |
| 737 | readl(&ha->qla4_8xxx_reg->host_int); |
| 738 | } |
| 739 | |
| 740 | /** |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 741 | * qla4xxx_interrupt_service_routine - isr |
| 742 | * @ha: pointer to host adapter structure. |
| 743 | * |
| 744 | * This is the main interrupt service routine. |
| 745 | * hardware_lock locked upon entry. runs in interrupt context. |
| 746 | **/ |
| 747 | void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha, |
| 748 | uint32_t intr_status) |
| 749 | { |
| 750 | /* Process response queue interrupt. */ |
| 751 | if (intr_status & CSR_SCSI_COMPLETION_INTR) |
| 752 | qla4xxx_process_response_queue(ha); |
| 753 | |
| 754 | /* Process mailbox/asynch event interrupt.*/ |
| 755 | if (intr_status & CSR_SCSI_PROCESSOR_INTR) { |
| 756 | qla4xxx_isr_decode_mailbox(ha, |
| 757 | readl(&ha->reg->mailbox[0])); |
| 758 | |
| 759 | /* Clear Mailbox Interrupt */ |
| 760 | writel(set_rmask(CSR_SCSI_PROCESSOR_INTR), |
| 761 | &ha->reg->ctrl_status); |
| 762 | readl(&ha->reg->ctrl_status); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | /** |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 767 | * qla4_8xxx_spurious_interrupt - processes spurious interrupt |
| 768 | * @ha: pointer to host adapter structure. |
| 769 | * @reqs_count: . |
| 770 | * |
| 771 | **/ |
| 772 | static void qla4_8xxx_spurious_interrupt(struct scsi_qla_host *ha, |
| 773 | uint8_t reqs_count) |
| 774 | { |
| 775 | if (reqs_count) |
| 776 | return; |
| 777 | |
| 778 | DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n")); |
| 779 | if (is_qla8022(ha)) { |
| 780 | writel(0, &ha->qla4_8xxx_reg->host_int); |
| 781 | if (test_bit(AF_INTx_ENABLED, &ha->flags)) |
| 782 | qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, |
| 783 | 0xfbff); |
| 784 | } |
| 785 | ha->spurious_int_count++; |
| 786 | } |
| 787 | |
| 788 | /** |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 789 | * qla4xxx_intr_handler - hardware interrupt handler. |
| 790 | * @irq: Unused |
| 791 | * @dev_id: Pointer to host adapter structure |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 792 | **/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 793 | irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id) |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 794 | { |
| 795 | struct scsi_qla_host *ha; |
| 796 | uint32_t intr_status; |
| 797 | unsigned long flags = 0; |
| 798 | uint8_t reqs_count = 0; |
| 799 | |
| 800 | ha = (struct scsi_qla_host *) dev_id; |
| 801 | if (!ha) { |
| 802 | DEBUG2(printk(KERN_INFO |
| 803 | "qla4xxx: Interrupt with NULL host ptr\n")); |
| 804 | return IRQ_NONE; |
| 805 | } |
| 806 | |
| 807 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 808 | |
David C Somayajulu | d915058 | 2006-11-15 17:38:40 -0800 | [diff] [blame] | 809 | ha->isr_count++; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 810 | /* |
| 811 | * Repeatedly service interrupts up to a maximum of |
| 812 | * MAX_REQS_SERVICED_PER_INTR |
| 813 | */ |
| 814 | while (1) { |
| 815 | /* |
| 816 | * Read interrupt status |
| 817 | */ |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 818 | if (ha->isp_ops->rd_shdw_rsp_q_in(ha) != |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 819 | ha->response_out) |
| 820 | intr_status = CSR_SCSI_COMPLETION_INTR; |
| 821 | else |
| 822 | intr_status = readl(&ha->reg->ctrl_status); |
| 823 | |
| 824 | if ((intr_status & |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 825 | (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) { |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 826 | if (reqs_count == 0) |
| 827 | ha->spurious_int_count++; |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | if (intr_status & CSR_FATAL_ERROR) { |
| 832 | DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, " |
| 833 | "Status 0x%04x\n", ha->host_no, |
| 834 | readl(isp_port_error_status (ha)))); |
| 835 | |
| 836 | /* Issue Soft Reset to clear this error condition. |
| 837 | * This will prevent the RISC from repeatedly |
| 838 | * interrupting the driver; thus, allowing the DPC to |
| 839 | * get scheduled to continue error recovery. |
| 840 | * NOTE: Disabling RISC interrupts does not work in |
| 841 | * this case, as CSR_FATAL_ERROR overrides |
| 842 | * CSR_SCSI_INTR_ENABLE */ |
| 843 | if ((readl(&ha->reg->ctrl_status) & |
| 844 | CSR_SCSI_RESET_INTR) == 0) { |
| 845 | writel(set_rmask(CSR_SOFT_RESET), |
| 846 | &ha->reg->ctrl_status); |
| 847 | readl(&ha->reg->ctrl_status); |
| 848 | } |
| 849 | |
| 850 | writel(set_rmask(CSR_FATAL_ERROR), |
| 851 | &ha->reg->ctrl_status); |
| 852 | readl(&ha->reg->ctrl_status); |
| 853 | |
| 854 | __qla4xxx_disable_intrs(ha); |
| 855 | |
| 856 | set_bit(DPC_RESET_HA, &ha->dpc_flags); |
| 857 | |
| 858 | break; |
| 859 | } else if (intr_status & CSR_SCSI_RESET_INTR) { |
| 860 | clear_bit(AF_ONLINE, &ha->flags); |
| 861 | __qla4xxx_disable_intrs(ha); |
| 862 | |
| 863 | writel(set_rmask(CSR_SCSI_RESET_INTR), |
| 864 | &ha->reg->ctrl_status); |
| 865 | readl(&ha->reg->ctrl_status); |
| 866 | |
Karen Higgins | 7eece5a | 2011-03-21 03:34:29 -0700 | [diff] [blame] | 867 | if (!test_bit(AF_HA_REMOVAL, &ha->flags)) |
David C Somayajulu | 477ffb9 | 2007-01-22 12:26:11 -0800 | [diff] [blame] | 868 | set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 869 | |
| 870 | break; |
| 871 | } else if (intr_status & INTR_PENDING) { |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 872 | ha->isp_ops->interrupt_service_routine(ha, intr_status); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 873 | ha->total_io_count++; |
| 874 | if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) |
| 875 | break; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 876 | } |
| 877 | } |
| 878 | |
| 879 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 880 | |
| 881 | return IRQ_HANDLED; |
| 882 | } |
| 883 | |
| 884 | /** |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 885 | * qla4_8xxx_intr_handler - hardware interrupt handler. |
| 886 | * @irq: Unused |
| 887 | * @dev_id: Pointer to host adapter structure |
| 888 | **/ |
| 889 | irqreturn_t qla4_8xxx_intr_handler(int irq, void *dev_id) |
| 890 | { |
| 891 | struct scsi_qla_host *ha = dev_id; |
| 892 | uint32_t intr_status; |
| 893 | uint32_t status; |
| 894 | unsigned long flags = 0; |
| 895 | uint8_t reqs_count = 0; |
| 896 | |
Lalit Chandivade | 2232be0 | 2010-07-30 14:38:47 +0530 | [diff] [blame] | 897 | if (unlikely(pci_channel_offline(ha->pdev))) |
| 898 | return IRQ_HANDLED; |
| 899 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 900 | ha->isr_count++; |
| 901 | status = qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); |
| 902 | if (!(status & ha->nx_legacy_intr.int_vec_bit)) |
| 903 | return IRQ_NONE; |
| 904 | |
| 905 | status = qla4_8xxx_rd_32(ha, ISR_INT_STATE_REG); |
| 906 | if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) { |
| 907 | DEBUG2(ql4_printk(KERN_INFO, ha, |
| 908 | "%s legacy Int not triggered\n", __func__)); |
| 909 | return IRQ_NONE; |
| 910 | } |
| 911 | |
| 912 | /* clear the interrupt */ |
| 913 | qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); |
| 914 | |
| 915 | /* read twice to ensure write is flushed */ |
| 916 | qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); |
| 917 | qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); |
| 918 | |
| 919 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 920 | while (1) { |
| 921 | if (!(readl(&ha->qla4_8xxx_reg->host_int) & |
| 922 | ISRX_82XX_RISC_INT)) { |
| 923 | qla4_8xxx_spurious_interrupt(ha, reqs_count); |
| 924 | break; |
| 925 | } |
| 926 | intr_status = readl(&ha->qla4_8xxx_reg->host_status); |
| 927 | if ((intr_status & |
| 928 | (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { |
| 929 | qla4_8xxx_spurious_interrupt(ha, reqs_count); |
| 930 | break; |
| 931 | } |
| 932 | |
| 933 | ha->isp_ops->interrupt_service_routine(ha, intr_status); |
| 934 | |
| 935 | /* Enable Interrupt */ |
| 936 | qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff); |
| 937 | |
| 938 | if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) |
| 939 | break; |
| 940 | } |
| 941 | |
| 942 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 943 | return IRQ_HANDLED; |
| 944 | } |
| 945 | |
| 946 | irqreturn_t |
| 947 | qla4_8xxx_msi_handler(int irq, void *dev_id) |
| 948 | { |
| 949 | struct scsi_qla_host *ha; |
| 950 | |
| 951 | ha = (struct scsi_qla_host *) dev_id; |
| 952 | if (!ha) { |
| 953 | DEBUG2(printk(KERN_INFO |
| 954 | "qla4xxx: MSIX: Interrupt with NULL host ptr\n")); |
| 955 | return IRQ_NONE; |
| 956 | } |
| 957 | |
| 958 | ha->isr_count++; |
| 959 | /* clear the interrupt */ |
| 960 | qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff); |
| 961 | |
| 962 | /* read twice to ensure write is flushed */ |
| 963 | qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); |
| 964 | qla4_8xxx_rd_32(ha, ISR_INT_VECTOR); |
| 965 | |
| 966 | return qla4_8xxx_default_intr_handler(irq, dev_id); |
| 967 | } |
| 968 | |
| 969 | /** |
| 970 | * qla4_8xxx_default_intr_handler - hardware interrupt handler. |
| 971 | * @irq: Unused |
| 972 | * @dev_id: Pointer to host adapter structure |
| 973 | * |
| 974 | * This interrupt handler is called directly for MSI-X, and |
| 975 | * called indirectly for MSI. |
| 976 | **/ |
| 977 | irqreturn_t |
| 978 | qla4_8xxx_default_intr_handler(int irq, void *dev_id) |
| 979 | { |
| 980 | struct scsi_qla_host *ha = dev_id; |
| 981 | unsigned long flags; |
| 982 | uint32_t intr_status; |
| 983 | uint8_t reqs_count = 0; |
| 984 | |
| 985 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 986 | while (1) { |
| 987 | if (!(readl(&ha->qla4_8xxx_reg->host_int) & |
| 988 | ISRX_82XX_RISC_INT)) { |
| 989 | qla4_8xxx_spurious_interrupt(ha, reqs_count); |
| 990 | break; |
| 991 | } |
| 992 | |
| 993 | intr_status = readl(&ha->qla4_8xxx_reg->host_status); |
| 994 | if ((intr_status & |
| 995 | (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) { |
| 996 | qla4_8xxx_spurious_interrupt(ha, reqs_count); |
| 997 | break; |
| 998 | } |
| 999 | |
| 1000 | ha->isp_ops->interrupt_service_routine(ha, intr_status); |
| 1001 | |
| 1002 | if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) |
| 1003 | break; |
| 1004 | } |
| 1005 | |
| 1006 | ha->isr_count++; |
| 1007 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1008 | return IRQ_HANDLED; |
| 1009 | } |
| 1010 | |
| 1011 | irqreturn_t |
| 1012 | qla4_8xxx_msix_rsp_q(int irq, void *dev_id) |
| 1013 | { |
| 1014 | struct scsi_qla_host *ha = dev_id; |
| 1015 | unsigned long flags; |
| 1016 | |
| 1017 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1018 | qla4xxx_process_response_queue(ha); |
| 1019 | writel(0, &ha->qla4_8xxx_reg->host_int); |
| 1020 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1021 | |
| 1022 | ha->isr_count++; |
| 1023 | return IRQ_HANDLED; |
| 1024 | } |
| 1025 | |
| 1026 | /** |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1027 | * qla4xxx_process_aen - processes AENs generated by firmware |
| 1028 | * @ha: pointer to host adapter structure. |
| 1029 | * @process_aen: type of AENs to process |
| 1030 | * |
| 1031 | * Processes specific types of Asynchronous Events generated by firmware. |
| 1032 | * The type of AENs to process is specified by process_aen and can be |
| 1033 | * PROCESS_ALL_AENS 0 |
| 1034 | * FLUSH_DDB_CHANGED_AENS 1 |
| 1035 | * RELOGIN_DDB_CHANGED_AENS 2 |
| 1036 | **/ |
| 1037 | void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen) |
| 1038 | { |
| 1039 | uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; |
| 1040 | struct aen *aen; |
| 1041 | int i; |
| 1042 | unsigned long flags; |
| 1043 | |
| 1044 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1045 | while (ha->aen_out != ha->aen_in) { |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1046 | aen = &ha->aen_q[ha->aen_out]; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1047 | /* copy aen information to local structure */ |
| 1048 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) |
| 1049 | mbox_sts[i] = aen->mbox_sts[i]; |
| 1050 | |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 1051 | ha->aen_q_count++; |
| 1052 | ha->aen_out++; |
| 1053 | |
| 1054 | if (ha->aen_out == MAX_AEN_ENTRIES) |
| 1055 | ha->aen_out = 0; |
| 1056 | |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1057 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| 1058 | |
David C Somayajulu | 401425b | 2007-05-23 18:03:20 -0700 | [diff] [blame] | 1059 | DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x" |
| 1060 | " mbx3=0x%08x mbx4=0x%08x\n", ha->host_no, |
| 1061 | (ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)), |
| 1062 | mbox_sts[0], mbox_sts[1], mbox_sts[2], |
| 1063 | mbox_sts[3], mbox_sts[4])); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1064 | |
| 1065 | switch (mbox_sts[0]) { |
| 1066 | case MBOX_ASTS_DATABASE_CHANGED: |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 1067 | switch (process_aen) { |
| 1068 | case FLUSH_DDB_CHANGED_AENS: |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1069 | DEBUG2(printk("scsi%ld: AEN[%d] %04x, index " |
| 1070 | "[%d] state=%04x FLUSHED!\n", |
| 1071 | ha->host_no, ha->aen_out, |
| 1072 | mbox_sts[0], mbox_sts[2], |
| 1073 | mbox_sts[3])); |
| 1074 | break; |
Manish Rangankar | b3a271a | 2011-07-25 13:48:53 -0500 | [diff] [blame] | 1075 | case PROCESS_ALL_AENS: |
| 1076 | default: |
| 1077 | /* Specific device. */ |
| 1078 | if (mbox_sts[1] == 1) |
| 1079 | qla4xxx_process_ddb_changed(ha, |
| 1080 | mbox_sts[2], mbox_sts[3], |
| 1081 | mbox_sts[4]); |
| 1082 | break; |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1083 | } |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1084 | } |
| 1085 | spin_lock_irqsave(&ha->hardware_lock, flags); |
| 1086 | } |
| 1087 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
David Somayajulu | afaf5a2 | 2006-09-19 10:28:00 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 1090 | int qla4xxx_request_irqs(struct scsi_qla_host *ha) |
| 1091 | { |
| 1092 | int ret; |
| 1093 | |
| 1094 | if (!is_qla8022(ha)) |
| 1095 | goto try_intx; |
| 1096 | |
| 1097 | if (ql4xenablemsix == 2) |
| 1098 | goto try_msi; |
| 1099 | |
| 1100 | if (ql4xenablemsix == 0 || ql4xenablemsix != 1) |
| 1101 | goto try_intx; |
| 1102 | |
| 1103 | /* Trying MSI-X */ |
| 1104 | ret = qla4_8xxx_enable_msix(ha); |
| 1105 | if (!ret) { |
| 1106 | DEBUG2(ql4_printk(KERN_INFO, ha, |
| 1107 | "MSI-X: Enabled (0x%X).\n", ha->revision_id)); |
| 1108 | goto irq_attached; |
| 1109 | } |
| 1110 | |
| 1111 | ql4_printk(KERN_WARNING, ha, |
| 1112 | "MSI-X: Falling back-to MSI mode -- %d.\n", ret); |
| 1113 | |
| 1114 | try_msi: |
| 1115 | /* Trying MSI */ |
| 1116 | ret = pci_enable_msi(ha->pdev); |
| 1117 | if (!ret) { |
| 1118 | ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler, |
Shyam Sundar | 61391d3 | 2010-12-02 22:12:08 -0800 | [diff] [blame] | 1119 | 0, DRIVER_NAME, ha); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 1120 | if (!ret) { |
| 1121 | DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n")); |
| 1122 | set_bit(AF_MSI_ENABLED, &ha->flags); |
| 1123 | goto irq_attached; |
| 1124 | } else { |
| 1125 | ql4_printk(KERN_WARNING, ha, |
| 1126 | "MSI: Failed to reserve interrupt %d " |
| 1127 | "already in use.\n", ha->pdev->irq); |
| 1128 | pci_disable_msi(ha->pdev); |
| 1129 | } |
| 1130 | } |
| 1131 | ql4_printk(KERN_WARNING, ha, |
| 1132 | "MSI: Falling back-to INTx mode -- %d.\n", ret); |
| 1133 | |
| 1134 | try_intx: |
| 1135 | /* Trying INTx */ |
| 1136 | ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler, |
Vikas Chaudhary | 3e1350c | 2010-12-02 22:12:03 -0800 | [diff] [blame] | 1137 | IRQF_SHARED, DRIVER_NAME, ha); |
Vikas Chaudhary | f4f5df2 | 2010-07-28 15:53:44 +0530 | [diff] [blame] | 1138 | if (!ret) { |
| 1139 | DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n")); |
| 1140 | set_bit(AF_INTx_ENABLED, &ha->flags); |
| 1141 | goto irq_attached; |
| 1142 | |
| 1143 | } else { |
| 1144 | ql4_printk(KERN_WARNING, ha, |
| 1145 | "INTx: Failed to reserve interrupt %d already in" |
| 1146 | " use.\n", ha->pdev->irq); |
| 1147 | return ret; |
| 1148 | } |
| 1149 | |
| 1150 | irq_attached: |
| 1151 | set_bit(AF_IRQ_ATTACHED, &ha->flags); |
| 1152 | ha->host->irq = ha->pdev->irq; |
| 1153 | ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n", |
| 1154 | __func__, ha->pdev->irq); |
| 1155 | return ret; |
| 1156 | } |
| 1157 | |
| 1158 | void qla4xxx_free_irqs(struct scsi_qla_host *ha) |
| 1159 | { |
| 1160 | if (test_bit(AF_MSIX_ENABLED, &ha->flags)) |
| 1161 | qla4_8xxx_disable_msix(ha); |
| 1162 | else if (test_and_clear_bit(AF_MSI_ENABLED, &ha->flags)) { |
| 1163 | free_irq(ha->pdev->irq, ha); |
| 1164 | pci_disable_msi(ha->pdev); |
| 1165 | } else if (test_and_clear_bit(AF_INTx_ENABLED, &ha->flags)) |
| 1166 | free_irq(ha->pdev->irq, ha); |
| 1167 | } |