| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1 | /******************************************************************* |
| 2 | * This file is part of the Emulex Linux Device Driver for * |
James.Smart@Emulex.Com | c44ce17 | 2005-06-25 10:34:39 -0400 | [diff] [blame] | 3 | * Fibre Channel Host Bus Adapters. * |
| 4 | * Copyright (C) 2004-2005 Emulex. All rights reserved. * |
| 5 | * EMULEX and SLI are trademarks of Emulex. * |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 6 | * www.emulex.com * |
James.Smart@Emulex.Com | c44ce17 | 2005-06-25 10:34:39 -0400 | [diff] [blame] | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 8 | * * |
| 9 | * This program is free software; you can redistribute it and/or * |
James.Smart@Emulex.Com | c44ce17 | 2005-06-25 10:34:39 -0400 | [diff] [blame] | 10 | * modify it under the terms of version 2 of the GNU General * |
| 11 | * Public License as published by the Free Software Foundation. * |
| 12 | * This program is distributed in the hope that it will be useful. * |
| 13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| 14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| 15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| 16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| 17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| 18 | * more details, a copy of which can be found in the file COPYING * |
| 19 | * included with this package. * |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 20 | *******************************************************************/ |
| 21 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 22 | #include <linux/pci.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | |
| 25 | #include <scsi/scsi.h> |
| 26 | #include <scsi/scsi_device.h> |
| 27 | #include <scsi/scsi_host.h> |
| 28 | #include <scsi/scsi_tcq.h> |
| 29 | #include <scsi/scsi_transport_fc.h> |
| 30 | |
| 31 | #include "lpfc_version.h" |
| 32 | #include "lpfc_hw.h" |
| 33 | #include "lpfc_sli.h" |
| 34 | #include "lpfc_disc.h" |
| 35 | #include "lpfc_scsi.h" |
| 36 | #include "lpfc.h" |
| 37 | #include "lpfc_logmsg.h" |
| 38 | #include "lpfc_crtn.h" |
| 39 | |
| 40 | #define LPFC_RESET_WAIT 2 |
| 41 | #define LPFC_ABORT_WAIT 2 |
| 42 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 43 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 44 | static inline void |
| 45 | lpfc_block_requests(struct lpfc_hba * phba) |
| 46 | { |
| 47 | down(&phba->hba_can_block); |
| 48 | scsi_block_requests(phba->host); |
| 49 | } |
| 50 | |
| 51 | static inline void |
| 52 | lpfc_unblock_requests(struct lpfc_hba * phba) |
| 53 | { |
| 54 | scsi_unblock_requests(phba->host); |
| 55 | up(&phba->hba_can_block); |
| 56 | } |
| 57 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 58 | /* |
| 59 | * This routine allocates a scsi buffer, which contains all the necessary |
| 60 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region |
| 61 | * contains information to build the IOCB. The DMAable region contains |
| 62 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to |
| 63 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL |
| 64 | * and the BPL BDE is setup in the IOCB. |
| 65 | */ |
| 66 | static struct lpfc_scsi_buf * |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 67 | lpfc_new_scsi_buf(struct lpfc_hba * phba) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 68 | { |
| 69 | struct lpfc_scsi_buf *psb; |
| 70 | struct ulp_bde64 *bpl; |
| 71 | IOCB_t *iocb; |
| 72 | dma_addr_t pdma_phys; |
James Bottomley | 604a3e3 | 2005-10-29 10:28:33 -0500 | [diff] [blame] | 73 | uint16_t iotag; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 74 | |
| 75 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); |
| 76 | if (!psb) |
| 77 | return NULL; |
| 78 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); |
| 79 | psb->scsi_hba = phba; |
| 80 | |
| 81 | /* |
| 82 | * Get memory from the pci pool to map the virt space to pci bus space |
| 83 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, |
| 84 | * struct fcp_rsp and the number of bde's necessary to support the |
| 85 | * sg_tablesize. |
| 86 | */ |
| 87 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, |
| 88 | &psb->dma_handle); |
| 89 | if (!psb->data) { |
| 90 | kfree(psb); |
| 91 | return NULL; |
| 92 | } |
| 93 | |
| 94 | /* Initialize virtual ptrs to dma_buf region. */ |
| 95 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); |
| 96 | |
James Bottomley | 604a3e3 | 2005-10-29 10:28:33 -0500 | [diff] [blame] | 97 | /* Allocate iotag for psb->cur_iocbq. */ |
| 98 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); |
| 99 | if (iotag == 0) { |
| 100 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
| 101 | psb->data, psb->dma_handle); |
| 102 | kfree (psb); |
| 103 | return NULL; |
| 104 | } |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 105 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
James Bottomley | 604a3e3 | 2005-10-29 10:28:33 -0500 | [diff] [blame] | 106 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 107 | psb->fcp_cmnd = psb->data; |
| 108 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); |
| 109 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + |
| 110 | sizeof(struct fcp_rsp); |
| 111 | |
| 112 | /* Initialize local short-hand pointers. */ |
| 113 | bpl = psb->fcp_bpl; |
| 114 | pdma_phys = psb->dma_handle; |
| 115 | |
| 116 | /* |
| 117 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg |
| 118 | * list bdes. Initialize the first two and leave the rest for |
| 119 | * queuecommand. |
| 120 | */ |
| 121 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); |
| 122 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); |
| 123 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); |
| 124 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; |
| 125 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 126 | bpl++; |
| 127 | |
| 128 | /* Setup the physical region for the FCP RSP */ |
| 129 | pdma_phys += sizeof (struct fcp_cmnd); |
| 130 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); |
| 131 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); |
| 132 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); |
| 133 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); |
| 134 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 135 | |
| 136 | /* |
| 137 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, |
| 138 | * initialize it with all known data now. |
| 139 | */ |
| 140 | pdma_phys += (sizeof (struct fcp_rsp)); |
| 141 | iocb = &psb->cur_iocbq.iocb; |
| 142 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; |
| 143 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); |
| 144 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); |
| 145 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
| 146 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; |
| 147 | iocb->ulpBdeCount = 1; |
| 148 | iocb->ulpClass = CLASS3; |
| 149 | |
| 150 | return psb; |
| 151 | } |
| 152 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 153 | struct lpfc_scsi_buf* |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 154 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 155 | { |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 156 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
| 157 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 158 | unsigned long iflag = 0; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 159 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 160 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 161 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 162 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 163 | return lpfc_cmd; |
| 164 | } |
| 165 | |
| 166 | static void |
| 167 | lpfc_release_scsi_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) |
| 168 | { |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 169 | unsigned long iflag = 0; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 170 | /* |
| 171 | * There are only two special cases to consider. (1) the scsi command |
| 172 | * requested scatter-gather usage or (2) the scsi command allocated |
| 173 | * a request buffer, but did not request use_sg. There is a third |
| 174 | * case, but it does not require resource deallocation. |
| 175 | */ |
| 176 | if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) { |
| 177 | dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer, |
| 178 | psb->seg_cnt, psb->pCmd->sc_data_direction); |
| 179 | } else { |
| 180 | if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) { |
| 181 | dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys, |
| 182 | psb->pCmd->request_bufflen, |
| 183 | psb->pCmd->sc_data_direction); |
| 184 | } |
| 185 | } |
| 186 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 187 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 188 | psb->pCmd = NULL; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 189 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 190 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | static int |
| 194 | lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd) |
| 195 | { |
| 196 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
| 197 | struct scatterlist *sgel = NULL; |
| 198 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; |
| 199 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; |
| 200 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
| 201 | dma_addr_t physaddr; |
| 202 | uint32_t i, num_bde = 0; |
| 203 | int datadir = scsi_cmnd->sc_data_direction; |
| 204 | int dma_error; |
| 205 | |
| 206 | /* |
| 207 | * There are three possibilities here - use scatter-gather segment, use |
| 208 | * the single mapping, or neither. Start the lpfc command prep by |
| 209 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first |
| 210 | * data bde entry. |
| 211 | */ |
| 212 | bpl += 2; |
| 213 | if (scsi_cmnd->use_sg) { |
| 214 | /* |
| 215 | * The driver stores the segment count returned from pci_map_sg |
| 216 | * because this a count of dma-mappings used to map the use_sg |
| 217 | * pages. They are not guaranteed to be the same for those |
| 218 | * architectures that implement an IOMMU. |
| 219 | */ |
| 220 | sgel = (struct scatterlist *)scsi_cmnd->request_buffer; |
| 221 | lpfc_cmd->seg_cnt = dma_map_sg(&phba->pcidev->dev, sgel, |
| 222 | scsi_cmnd->use_sg, datadir); |
| 223 | if (lpfc_cmd->seg_cnt == 0) |
| 224 | return 1; |
| 225 | |
| 226 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
| 227 | printk(KERN_ERR "%s: Too many sg segments from " |
| 228 | "dma_map_sg. Config %d, seg_cnt %d", |
| 229 | __FUNCTION__, phba->cfg_sg_seg_cnt, |
| 230 | lpfc_cmd->seg_cnt); |
| 231 | dma_unmap_sg(&phba->pcidev->dev, sgel, |
| 232 | lpfc_cmd->seg_cnt, datadir); |
| 233 | return 1; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * The driver established a maximum scatter-gather segment count |
| 238 | * during probe that limits the number of sg elements in any |
| 239 | * single scsi command. Just run through the seg_cnt and format |
| 240 | * the bde's. |
| 241 | */ |
| 242 | for (i = 0; i < lpfc_cmd->seg_cnt; i++) { |
| 243 | physaddr = sg_dma_address(sgel); |
| 244 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); |
| 245 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); |
| 246 | bpl->tus.f.bdeSize = sg_dma_len(sgel); |
| 247 | if (datadir == DMA_TO_DEVICE) |
| 248 | bpl->tus.f.bdeFlags = 0; |
| 249 | else |
| 250 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; |
| 251 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 252 | bpl++; |
| 253 | sgel++; |
| 254 | num_bde++; |
| 255 | } |
| 256 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { |
| 257 | physaddr = dma_map_single(&phba->pcidev->dev, |
| 258 | scsi_cmnd->request_buffer, |
| 259 | scsi_cmnd->request_bufflen, |
| 260 | datadir); |
| 261 | dma_error = dma_mapping_error(physaddr); |
| 262 | if (dma_error) { |
| 263 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| 264 | "%d:0718 Unable to dma_map_single " |
| 265 | "request_buffer: x%x\n", |
| 266 | phba->brd_no, dma_error); |
| 267 | return 1; |
| 268 | } |
| 269 | |
| 270 | lpfc_cmd->nonsg_phys = physaddr; |
| 271 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); |
| 272 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); |
| 273 | bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen; |
| 274 | if (datadir == DMA_TO_DEVICE) |
| 275 | bpl->tus.f.bdeFlags = 0; |
James.Smart@Emulex.Com | 483f05f | 2005-08-10 15:02:45 -0400 | [diff] [blame] | 276 | else |
| 277 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 278 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
| 279 | num_bde = 1; |
| 280 | bpl++; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * Finish initializing those IOCB fields that are dependent on the |
James.Smart@Emulex.Com | 483f05f | 2005-08-10 15:02:45 -0400 | [diff] [blame] | 285 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
| 286 | * reinitialized since all iocb memory resources are used many times |
| 287 | * for transmit, receive, and continuation bpl's. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 288 | */ |
James.Smart@Emulex.Com | 483f05f | 2005-08-10 15:02:45 -0400 | [diff] [blame] | 289 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 290 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
| 291 | (num_bde * sizeof (struct ulp_bde64)); |
| 292 | iocb_cmd->ulpBdeCount = 1; |
| 293 | iocb_cmd->ulpLe = 1; |
| 294 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_cmnd->request_bufflen); |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | static void |
| 299 | lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd) |
| 300 | { |
| 301 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; |
| 302 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; |
| 303 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; |
| 304 | struct lpfc_hba *phba = lpfc_cmd->scsi_hba; |
| 305 | uint32_t fcpi_parm = lpfc_cmd->cur_iocbq.iocb.un.fcpi.fcpi_parm; |
| 306 | uint32_t resp_info = fcprsp->rspStatus2; |
| 307 | uint32_t scsi_status = fcprsp->rspStatus3; |
| 308 | uint32_t host_status = DID_OK; |
| 309 | uint32_t rsplen = 0; |
| 310 | |
| 311 | /* |
| 312 | * If this is a task management command, there is no |
| 313 | * scsi packet associated with this lpfc_cmd. The driver |
| 314 | * consumes it. |
| 315 | */ |
| 316 | if (fcpcmd->fcpCntl2) { |
| 317 | scsi_status = 0; |
| 318 | goto out; |
| 319 | } |
| 320 | |
| 321 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 322 | "%d:0730 FCP command failed: RSP " |
| 323 | "Data: x%x x%x x%x x%x x%x x%x\n", |
| 324 | phba->brd_no, resp_info, scsi_status, |
| 325 | be32_to_cpu(fcprsp->rspResId), |
| 326 | be32_to_cpu(fcprsp->rspSnsLen), |
| 327 | be32_to_cpu(fcprsp->rspRspLen), |
| 328 | fcprsp->rspInfo3); |
| 329 | |
| 330 | if (resp_info & RSP_LEN_VALID) { |
| 331 | rsplen = be32_to_cpu(fcprsp->rspRspLen); |
| 332 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || |
| 333 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { |
| 334 | host_status = DID_ERROR; |
| 335 | goto out; |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
| 340 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); |
| 341 | if (snslen > SCSI_SENSE_BUFFERSIZE) |
| 342 | snslen = SCSI_SENSE_BUFFERSIZE; |
| 343 | |
| 344 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); |
| 345 | } |
| 346 | |
| 347 | cmnd->resid = 0; |
| 348 | if (resp_info & RESID_UNDER) { |
| 349 | cmnd->resid = be32_to_cpu(fcprsp->rspResId); |
| 350 | |
| 351 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
| 352 | "%d:0716 FCP Read Underrun, expected %d, " |
| 353 | "residual %d Data: x%x x%x x%x\n", phba->brd_no, |
| 354 | be32_to_cpu(fcpcmd->fcpDl), cmnd->resid, |
| 355 | fcpi_parm, cmnd->cmnd[0], cmnd->underflow); |
| 356 | |
| 357 | /* |
| 358 | * The cmnd->underflow is the minimum number of bytes that must |
| 359 | * be transfered for this command. Provided a sense condition |
| 360 | * is not present, make sure the actual amount transferred is at |
| 361 | * least the underflow value or fail. |
| 362 | */ |
| 363 | if (!(resp_info & SNS_LEN_VALID) && |
| 364 | (scsi_status == SAM_STAT_GOOD) && |
| 365 | (cmnd->request_bufflen - cmnd->resid) < cmnd->underflow) { |
| 366 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
| 367 | "%d:0717 FCP command x%x residual " |
| 368 | "underrun converted to error " |
| 369 | "Data: x%x x%x x%x\n", phba->brd_no, |
| 370 | cmnd->cmnd[0], cmnd->request_bufflen, |
| 371 | cmnd->resid, cmnd->underflow); |
| 372 | |
| 373 | host_status = DID_ERROR; |
| 374 | } |
| 375 | } else if (resp_info & RESID_OVER) { |
| 376 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 377 | "%d:0720 FCP command x%x residual " |
| 378 | "overrun error. Data: x%x x%x \n", |
| 379 | phba->brd_no, cmnd->cmnd[0], |
| 380 | cmnd->request_bufflen, cmnd->resid); |
| 381 | host_status = DID_ERROR; |
| 382 | |
| 383 | /* |
| 384 | * Check SLI validation that all the transfer was actually done |
| 385 | * (fcpi_parm should be zero). Apply check only to reads. |
| 386 | */ |
| 387 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && |
| 388 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { |
| 389 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 390 | "%d:0734 FCP Read Check Error Data: " |
| 391 | "x%x x%x x%x x%x\n", phba->brd_no, |
| 392 | be32_to_cpu(fcpcmd->fcpDl), |
| 393 | be32_to_cpu(fcprsp->rspResId), |
| 394 | fcpi_parm, cmnd->cmnd[0]); |
| 395 | host_status = DID_ERROR; |
| 396 | cmnd->resid = cmnd->request_bufflen; |
| 397 | } |
| 398 | |
| 399 | out: |
| 400 | cmnd->result = ScsiResult(host_status, scsi_status); |
| 401 | } |
| 402 | |
| 403 | static void |
| 404 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, |
| 405 | struct lpfc_iocbq *pIocbOut) |
| 406 | { |
| 407 | struct lpfc_scsi_buf *lpfc_cmd = |
| 408 | (struct lpfc_scsi_buf *) pIocbIn->context1; |
| 409 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
| 410 | struct lpfc_nodelist *pnode = rdata->pnode; |
| 411 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 412 | |
| 413 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; |
| 414 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; |
| 415 | |
| 416 | if (lpfc_cmd->status) { |
| 417 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && |
| 418 | (lpfc_cmd->result & IOERR_DRVR_MASK)) |
| 419 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
| 420 | else if (lpfc_cmd->status >= IOSTAT_CNT) |
| 421 | lpfc_cmd->status = IOSTAT_DEFAULT; |
| 422 | |
| 423 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 424 | "%d:0729 FCP cmd x%x failed <%d/%d> status: " |
| 425 | "x%x result: x%x Data: x%x x%x\n", |
| 426 | phba->brd_no, cmd->cmnd[0], cmd->device->id, |
| 427 | cmd->device->lun, lpfc_cmd->status, |
| 428 | lpfc_cmd->result, pIocbOut->iocb.ulpContext, |
| 429 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); |
| 430 | |
| 431 | switch (lpfc_cmd->status) { |
| 432 | case IOSTAT_FCP_RSP_ERROR: |
| 433 | /* Call FCP RSP handler to determine result */ |
| 434 | lpfc_handle_fcp_err(lpfc_cmd); |
| 435 | break; |
| 436 | case IOSTAT_NPORT_BSY: |
| 437 | case IOSTAT_FABRIC_BSY: |
| 438 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); |
| 439 | break; |
| 440 | default: |
| 441 | cmd->result = ScsiResult(DID_ERROR, 0); |
| 442 | break; |
| 443 | } |
| 444 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 445 | if ((pnode == NULL ) |
| 446 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
| 447 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 448 | } else { |
| 449 | cmd->result = ScsiResult(DID_OK, 0); |
| 450 | } |
| 451 | |
| 452 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { |
| 453 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; |
| 454 | |
| 455 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
| 456 | "%d:0710 Iodone <%d/%d> cmd %p, error x%x " |
| 457 | "SNS x%x x%x Data: x%x x%x\n", |
| 458 | phba->brd_no, cmd->device->id, |
| 459 | cmd->device->lun, cmd, cmd->result, |
| 460 | *lp, *(lp + 3), cmd->retries, cmd->resid); |
| 461 | } |
| 462 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 463 | cmd->scsi_done(cmd); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 464 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 465 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | static void |
| 469 | lpfc_scsi_prep_cmnd(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd, |
| 470 | struct lpfc_nodelist *pnode) |
| 471 | { |
| 472 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
| 473 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; |
| 474 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
| 475 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); |
| 476 | int datadir = scsi_cmnd->sc_data_direction; |
| 477 | |
| 478 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
James.Smart@Emulex.Com | 69859dc | 2005-08-10 15:02:37 -0400 | [diff] [blame] | 479 | /* clear task management bits */ |
| 480 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 481 | |
James.Smart@Emulex.Com | 9188652 | 2005-08-10 15:03:09 -0400 | [diff] [blame] | 482 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
| 483 | &lpfc_cmd->fcp_cmnd->fcp_lun); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 484 | |
| 485 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); |
| 486 | |
| 487 | if (scsi_cmnd->device->tagged_supported) { |
| 488 | switch (scsi_cmnd->tag) { |
| 489 | case HEAD_OF_QUEUE_TAG: |
| 490 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; |
| 491 | break; |
| 492 | case ORDERED_QUEUE_TAG: |
| 493 | fcp_cmnd->fcpCntl1 = ORDERED_Q; |
| 494 | break; |
| 495 | default: |
| 496 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; |
| 497 | break; |
| 498 | } |
| 499 | } else |
| 500 | fcp_cmnd->fcpCntl1 = 0; |
| 501 | |
| 502 | /* |
| 503 | * There are three possibilities here - use scatter-gather segment, use |
| 504 | * the single mapping, or neither. Start the lpfc command prep by |
| 505 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first |
| 506 | * data bde entry. |
| 507 | */ |
| 508 | if (scsi_cmnd->use_sg) { |
| 509 | if (datadir == DMA_TO_DEVICE) { |
| 510 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; |
| 511 | iocb_cmd->un.fcpi.fcpi_parm = 0; |
| 512 | iocb_cmd->ulpPU = 0; |
| 513 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
| 514 | phba->fc4OutputRequests++; |
| 515 | } else { |
| 516 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; |
| 517 | iocb_cmd->ulpPU = PARM_READ_CHECK; |
| 518 | iocb_cmd->un.fcpi.fcpi_parm = |
| 519 | scsi_cmnd->request_bufflen; |
| 520 | fcp_cmnd->fcpCntl3 = READ_DATA; |
| 521 | phba->fc4InputRequests++; |
| 522 | } |
| 523 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { |
| 524 | if (datadir == DMA_TO_DEVICE) { |
| 525 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; |
| 526 | iocb_cmd->un.fcpi.fcpi_parm = 0; |
| 527 | iocb_cmd->ulpPU = 0; |
| 528 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
| 529 | phba->fc4OutputRequests++; |
| 530 | } else { |
| 531 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; |
| 532 | iocb_cmd->ulpPU = PARM_READ_CHECK; |
| 533 | iocb_cmd->un.fcpi.fcpi_parm = |
| 534 | scsi_cmnd->request_bufflen; |
| 535 | fcp_cmnd->fcpCntl3 = READ_DATA; |
| 536 | phba->fc4InputRequests++; |
| 537 | } |
| 538 | } else { |
| 539 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; |
| 540 | iocb_cmd->un.fcpi.fcpi_parm = 0; |
| 541 | iocb_cmd->ulpPU = 0; |
| 542 | fcp_cmnd->fcpCntl3 = 0; |
| 543 | phba->fc4ControlRequests++; |
| 544 | } |
| 545 | |
| 546 | /* |
| 547 | * Finish initializing those IOCB fields that are independent |
| 548 | * of the scsi_cmnd request_buffer |
| 549 | */ |
| 550 | piocbq->iocb.ulpContext = pnode->nlp_rpi; |
| 551 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) |
| 552 | piocbq->iocb.ulpFCP2Rcvy = 1; |
| 553 | |
| 554 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); |
| 555 | piocbq->context1 = lpfc_cmd; |
| 556 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
| 557 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; |
| 558 | } |
| 559 | |
| 560 | static int |
| 561 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_hba *phba, |
| 562 | struct lpfc_scsi_buf *lpfc_cmd, |
| 563 | uint8_t task_mgmt_cmd) |
| 564 | { |
| 565 | struct lpfc_sli *psli; |
| 566 | struct lpfc_iocbq *piocbq; |
| 567 | IOCB_t *piocb; |
| 568 | struct fcp_cmnd *fcp_cmnd; |
| 569 | struct scsi_device *scsi_dev = lpfc_cmd->pCmd->device; |
| 570 | struct lpfc_rport_data *rdata = scsi_dev->hostdata; |
| 571 | struct lpfc_nodelist *ndlp = rdata->pnode; |
| 572 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 573 | if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | psli = &phba->sli; |
| 578 | piocbq = &(lpfc_cmd->cur_iocbq); |
| 579 | piocb = &piocbq->iocb; |
| 580 | |
| 581 | fcp_cmnd = lpfc_cmd->fcp_cmnd; |
James.Smart@Emulex.Com | 9188652 | 2005-08-10 15:03:09 -0400 | [diff] [blame] | 582 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
| 583 | &lpfc_cmd->fcp_cmnd->fcp_lun); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 584 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
| 585 | |
| 586 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
| 587 | |
| 588 | piocb->ulpContext = ndlp->nlp_rpi; |
| 589 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { |
| 590 | piocb->ulpFCP2Rcvy = 1; |
| 591 | } |
| 592 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); |
| 593 | |
| 594 | /* ulpTimeout is only one byte */ |
| 595 | if (lpfc_cmd->timeout > 0xff) { |
| 596 | /* |
| 597 | * Do not timeout the command at the firmware level. |
| 598 | * The driver will provide the timeout mechanism. |
| 599 | */ |
| 600 | piocb->ulpTimeout = 0; |
| 601 | } else { |
| 602 | piocb->ulpTimeout = lpfc_cmd->timeout; |
| 603 | } |
| 604 | |
| 605 | lpfc_cmd->rdata = rdata; |
| 606 | |
| 607 | switch (task_mgmt_cmd) { |
| 608 | case FCP_LUN_RESET: |
| 609 | /* Issue LUN Reset to TGT <num> LUN <num> */ |
| 610 | lpfc_printf_log(phba, |
| 611 | KERN_INFO, |
| 612 | LOG_FCP, |
| 613 | "%d:0703 Issue LUN Reset to TGT %d LUN %d " |
| 614 | "Data: x%x x%x\n", |
| 615 | phba->brd_no, |
| 616 | scsi_dev->id, scsi_dev->lun, |
| 617 | ndlp->nlp_rpi, ndlp->nlp_flag); |
| 618 | |
| 619 | break; |
| 620 | case FCP_ABORT_TASK_SET: |
| 621 | /* Issue Abort Task Set to TGT <num> LUN <num> */ |
| 622 | lpfc_printf_log(phba, |
| 623 | KERN_INFO, |
| 624 | LOG_FCP, |
| 625 | "%d:0701 Issue Abort Task Set to TGT %d LUN %d " |
| 626 | "Data: x%x x%x\n", |
| 627 | phba->brd_no, |
| 628 | scsi_dev->id, scsi_dev->lun, |
| 629 | ndlp->nlp_rpi, ndlp->nlp_flag); |
| 630 | |
| 631 | break; |
| 632 | case FCP_TARGET_RESET: |
| 633 | /* Issue Target Reset to TGT <num> */ |
| 634 | lpfc_printf_log(phba, |
| 635 | KERN_INFO, |
| 636 | LOG_FCP, |
| 637 | "%d:0702 Issue Target Reset to TGT %d " |
| 638 | "Data: x%x x%x\n", |
| 639 | phba->brd_no, |
| 640 | scsi_dev->id, ndlp->nlp_rpi, |
| 641 | ndlp->nlp_flag); |
| 642 | break; |
| 643 | } |
| 644 | |
| 645 | return (1); |
| 646 | } |
| 647 | |
| 648 | static int |
| 649 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba) |
| 650 | { |
| 651 | struct lpfc_iocbq *iocbq; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 652 | struct lpfc_iocbq *iocbqrsp; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 653 | int ret; |
| 654 | |
| 655 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_TARGET_RESET); |
| 656 | if (!ret) |
| 657 | return FAILED; |
| 658 | |
| 659 | lpfc_cmd->scsi_hba = phba; |
| 660 | iocbq = &lpfc_cmd->cur_iocbq; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 661 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
| 662 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 663 | if (!iocbqrsp) |
| 664 | return FAILED; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 665 | |
James.Smart@Emulex.Com | 6887692 | 2005-10-28 20:29:47 -0400 | [diff] [blame] | 666 | ret = lpfc_sli_issue_iocb_wait(phba, |
| 667 | &phba->sli.ring[phba->sli.fcp_ring], |
| 668 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 669 | if (ret != IOCB_SUCCESS) { |
| 670 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
| 671 | ret = FAILED; |
| 672 | } else { |
| 673 | ret = SUCCESS; |
| 674 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; |
| 675 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; |
| 676 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && |
| 677 | (lpfc_cmd->result & IOERR_DRVR_MASK)) |
| 678 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
| 679 | } |
| 680 | |
James Bottomley | 604a3e3 | 2005-10-29 10:28:33 -0500 | [diff] [blame] | 681 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 682 | return ret; |
| 683 | } |
| 684 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 685 | const char * |
| 686 | lpfc_info(struct Scsi_Host *host) |
| 687 | { |
| 688 | struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0]; |
| 689 | int len; |
| 690 | static char lpfcinfobuf[384]; |
| 691 | |
| 692 | memset(lpfcinfobuf,0,384); |
| 693 | if (phba && phba->pcidev){ |
| 694 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); |
| 695 | len = strlen(lpfcinfobuf); |
| 696 | snprintf(lpfcinfobuf + len, |
| 697 | 384-len, |
| 698 | " on PCI bus %02x device %02x irq %d", |
| 699 | phba->pcidev->bus->number, |
| 700 | phba->pcidev->devfn, |
| 701 | phba->pcidev->irq); |
| 702 | len = strlen(lpfcinfobuf); |
| 703 | if (phba->Port[0]) { |
| 704 | snprintf(lpfcinfobuf + len, |
| 705 | 384-len, |
| 706 | " port %s", |
| 707 | phba->Port); |
| 708 | } |
| 709 | } |
| 710 | return lpfcinfobuf; |
| 711 | } |
| 712 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 713 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
| 714 | { |
| 715 | unsigned long poll_tmo_expires = |
| 716 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); |
| 717 | |
| 718 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) |
| 719 | mod_timer(&phba->fcp_poll_timer, |
| 720 | poll_tmo_expires); |
| 721 | } |
| 722 | |
| 723 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
| 724 | { |
| 725 | lpfc_poll_rearm_timer(phba); |
| 726 | } |
| 727 | |
| 728 | void lpfc_poll_timeout(unsigned long ptr) |
| 729 | { |
| 730 | struct lpfc_hba *phba = (struct lpfc_hba *)ptr; |
| 731 | unsigned long iflag; |
| 732 | |
| 733 | spin_lock_irqsave(phba->host->host_lock, iflag); |
| 734 | |
| 735 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
| 736 | lpfc_sli_poll_fcp_ring (phba); |
| 737 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
| 738 | lpfc_poll_rearm_timer(phba); |
| 739 | } |
| 740 | |
| 741 | spin_unlock_irqrestore(phba->host->host_lock, iflag); |
| 742 | } |
| 743 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 744 | static int |
| 745 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) |
| 746 | { |
| 747 | struct lpfc_hba *phba = |
| 748 | (struct lpfc_hba *) cmnd->device->host->hostdata[0]; |
| 749 | struct lpfc_sli *psli = &phba->sli; |
| 750 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
| 751 | struct lpfc_nodelist *ndlp = rdata->pnode; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 752 | struct lpfc_scsi_buf *lpfc_cmd; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 753 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 754 | int err; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 755 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 756 | err = fc_remote_port_chkready(rport); |
| 757 | if (err) { |
| 758 | cmnd->result = err; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 759 | goto out_fail_command; |
| 760 | } |
| 761 | |
| 762 | /* |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 763 | * Catch race where our node has transitioned, but the |
| 764 | * transport is still transitioning. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 765 | */ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 766 | if (!ndlp) { |
| 767 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); |
| 768 | goto out_fail_command; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 769 | } |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 770 | lpfc_cmd = lpfc_get_scsi_buf (phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 771 | if (lpfc_cmd == NULL) { |
James.Smart@Emulex.Com | 1de933f | 2005-11-28 11:41:15 -0500 | [diff] [blame] | 772 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
| 773 | "%d:0707 driver's buffer pool is empty, " |
| 774 | "IO busied\n", phba->brd_no); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 775 | goto out_host_busy; |
| 776 | } |
| 777 | |
| 778 | /* |
| 779 | * Store the midlayer's command structure for the completion phase |
| 780 | * and complete the command initialization. |
| 781 | */ |
| 782 | lpfc_cmd->pCmd = cmnd; |
| 783 | lpfc_cmd->rdata = rdata; |
| 784 | lpfc_cmd->timeout = 0; |
| 785 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
| 786 | cmnd->scsi_done = done; |
| 787 | |
| 788 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
| 789 | if (err) |
| 790 | goto out_host_busy_free_buf; |
| 791 | |
| 792 | lpfc_scsi_prep_cmnd(phba, lpfc_cmd, ndlp); |
| 793 | |
| 794 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], |
| 795 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
| 796 | if (err) |
| 797 | goto out_host_busy_free_buf; |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 798 | |
| 799 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
| 800 | lpfc_sli_poll_fcp_ring(phba); |
| 801 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
| 802 | lpfc_poll_rearm_timer(phba); |
| 803 | } |
| 804 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 805 | return 0; |
| 806 | |
| 807 | out_host_busy_free_buf: |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 808 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 809 | out_host_busy: |
| 810 | return SCSI_MLQUEUE_HOST_BUSY; |
| 811 | |
| 812 | out_fail_command: |
| 813 | done(cmnd); |
| 814 | return 0; |
| 815 | } |
| 816 | |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 817 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 818 | static int |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 819 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 820 | { |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 821 | struct Scsi_Host *shost = cmnd->device->host; |
| 822 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 823 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 824 | struct lpfc_iocbq *iocb; |
| 825 | struct lpfc_iocbq *abtsiocb; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 826 | struct lpfc_scsi_buf *lpfc_cmd; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 827 | IOCB_t *cmd, *icmd; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 828 | unsigned int loop_count = 0; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 829 | int ret = SUCCESS; |
| 830 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 831 | lpfc_block_requests(phba); |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 832 | spin_lock_irq(shost->host_lock); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 833 | |
| 834 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
| 835 | BUG_ON(!lpfc_cmd); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 836 | |
| 837 | /* |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 838 | * If pCmd field of the corresponding lpfc_scsi_buf structure |
| 839 | * points to a different SCSI command, then the driver has |
| 840 | * already completed this command, but the midlayer did not |
| 841 | * see the completion before the eh fired. Just return |
| 842 | * SUCCESS. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 843 | */ |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 844 | iocb = &lpfc_cmd->cur_iocbq; |
| 845 | if (lpfc_cmd->pCmd != cmnd) |
| 846 | goto out; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 847 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 848 | BUG_ON(iocb->context1 != lpfc_cmd); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 849 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 850 | abtsiocb = lpfc_sli_get_iocbq(phba); |
| 851 | if (abtsiocb == NULL) { |
| 852 | ret = FAILED; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 853 | goto out; |
| 854 | } |
| 855 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 856 | /* |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 857 | * The scsi command can not be in txq and it is in flight because the |
| 858 | * pCmd is still pointig at the SCSI command we have to abort. There |
| 859 | * is no need to search the txcmplq. Just send an abort to the FW. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 860 | */ |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 861 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 862 | cmd = &iocb->iocb; |
| 863 | icmd = &abtsiocb->iocb; |
| 864 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; |
| 865 | icmd->un.acxri.abortContextTag = cmd->ulpContext; |
| 866 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 867 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 868 | icmd->ulpLe = 1; |
| 869 | icmd->ulpClass = cmd->ulpClass; |
| 870 | if (phba->hba_state >= LPFC_LINK_UP) |
| 871 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
| 872 | else |
| 873 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 874 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 875 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
| 876 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
| 877 | lpfc_sli_release_iocbq(phba, abtsiocb); |
| 878 | ret = FAILED; |
| 879 | goto out; |
| 880 | } |
| 881 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 882 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
| 883 | lpfc_sli_poll_fcp_ring (phba); |
| 884 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 885 | /* Wait for abort to complete */ |
| 886 | while (lpfc_cmd->pCmd == cmnd) |
| 887 | { |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 888 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
| 889 | lpfc_sli_poll_fcp_ring (phba); |
| 890 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 891 | spin_unlock_irq(phba->host->host_lock); |
Nishanth Aravamudan | a9a3047 | 2005-11-07 01:01:20 -0800 | [diff] [blame] | 892 | schedule_timeout_uninterruptible(LPFC_ABORT_WAIT*HZ); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 893 | spin_lock_irq(phba->host->host_lock); |
| 894 | if (++loop_count |
| 895 | > (2 * phba->cfg_nodev_tmo)/LPFC_ABORT_WAIT) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 896 | break; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 897 | } |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 898 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 899 | if (lpfc_cmd->pCmd == cmnd) { |
| 900 | ret = FAILED; |
| 901 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| 902 | "%d:0748 abort handler timed out waiting for " |
| 903 | "abort to complete: ret %#x, ID %d, LUN %d, " |
| 904 | "snum %#lx\n", |
| 905 | phba->brd_no, ret, cmnd->device->id, |
| 906 | cmnd->device->lun, cmnd->serial_number); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | out: |
| 910 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
James.Smart@Emulex.Com | 1de933f | 2005-11-28 11:41:15 -0500 | [diff] [blame] | 911 | "%d:0749 SCSI Layer I/O Abort Request " |
| 912 | "Status x%x ID %d LUN %d snum %#lx\n", |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 913 | phba->brd_no, ret, cmnd->device->id, |
| 914 | cmnd->device->lun, cmnd->serial_number); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 915 | |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 916 | spin_unlock_irq(shost->host_lock); |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 917 | lpfc_unblock_requests(phba); |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 918 | |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 919 | return ret; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 920 | } |
| 921 | |
| 922 | static int |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 923 | lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 924 | { |
| 925 | struct Scsi_Host *shost = cmnd->device->host; |
| 926 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 927 | struct lpfc_scsi_buf *lpfc_cmd; |
| 928 | struct lpfc_iocbq *iocbq, *iocbqrsp; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 929 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
| 930 | struct lpfc_nodelist *pnode = rdata->pnode; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 931 | uint32_t cmd_result = 0, cmd_status = 0; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 932 | int ret = FAILED; |
| 933 | int cnt, loopcnt; |
| 934 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 935 | lpfc_block_requests(phba); |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 936 | spin_lock_irq(shost->host_lock); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 937 | /* |
| 938 | * If target is not in a MAPPED state, delay the reset until |
| 939 | * target is rediscovered or nodev timeout expires. |
| 940 | */ |
| 941 | while ( 1 ) { |
| 942 | if (!pnode) |
| 943 | break; |
| 944 | |
| 945 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { |
| 946 | spin_unlock_irq(phba->host->host_lock); |
Nishanth Aravamudan | a9a3047 | 2005-11-07 01:01:20 -0800 | [diff] [blame] | 947 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 948 | spin_lock_irq(phba->host->host_lock); |
| 949 | } |
| 950 | if ((pnode) && (pnode->nlp_state == NLP_STE_MAPPED_NODE)) |
| 951 | break; |
| 952 | } |
| 953 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 954 | lpfc_cmd = lpfc_get_scsi_buf (phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 955 | if (lpfc_cmd == NULL) |
| 956 | goto out; |
| 957 | |
| 958 | lpfc_cmd->pCmd = cmnd; |
| 959 | lpfc_cmd->timeout = 60; |
| 960 | lpfc_cmd->scsi_hba = phba; |
| 961 | |
| 962 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_LUN_RESET); |
| 963 | if (!ret) |
| 964 | goto out_free_scsi_buf; |
| 965 | |
| 966 | iocbq = &lpfc_cmd->cur_iocbq; |
| 967 | |
| 968 | /* get a buffer for this IOCB command response */ |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 969 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 970 | if (iocbqrsp == NULL) |
| 971 | goto out_free_scsi_buf; |
| 972 | |
James.Smart@Emulex.Com | 6887692 | 2005-10-28 20:29:47 -0400 | [diff] [blame] | 973 | ret = lpfc_sli_issue_iocb_wait(phba, |
| 974 | &phba->sli.ring[phba->sli.fcp_ring], |
| 975 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 976 | if (ret == IOCB_SUCCESS) |
| 977 | ret = SUCCESS; |
| 978 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 979 | |
| 980 | cmd_result = iocbqrsp->iocb.un.ulpWord[4]; |
| 981 | cmd_status = iocbqrsp->iocb.ulpStatus; |
| 982 | |
| 983 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
| 984 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 985 | |
| 986 | /* |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 987 | * All outstanding txcmplq I/Os should have been aborted by the device. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 988 | * Unfortunately, some targets do not abide by this forcing the driver |
| 989 | * to double check. |
| 990 | */ |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 991 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
| 992 | cmnd->device->id, cmnd->device->lun, |
| 993 | LPFC_CTX_LUN); |
| 994 | if (cnt) |
| 995 | lpfc_sli_abort_iocb(phba, |
| 996 | &phba->sli.ring[phba->sli.fcp_ring], |
| 997 | cmnd->device->id, cmnd->device->lun, |
| 998 | 0, LPFC_CTX_LUN); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 999 | loopcnt = 0; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1000 | while(cnt) { |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1001 | spin_unlock_irq(phba->host->host_lock); |
Nishanth Aravamudan | a9a3047 | 2005-11-07 01:01:20 -0800 | [diff] [blame] | 1002 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1003 | spin_lock_irq(phba->host->host_lock); |
| 1004 | |
| 1005 | if (++loopcnt |
| 1006 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) |
| 1007 | break; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1008 | |
| 1009 | cnt = lpfc_sli_sum_iocb(phba, |
| 1010 | &phba->sli.ring[phba->sli.fcp_ring], |
| 1011 | cmnd->device->id, cmnd->device->lun, |
| 1012 | LPFC_CTX_LUN); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | if (cnt) { |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 1016 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1017 | "%d:0719 LUN Reset I/O flush failure: cnt x%x\n", |
| 1018 | phba->brd_no, cnt); |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 1019 | ret = FAILED; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1020 | } |
| 1021 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1022 | out_free_scsi_buf: |
| 1023 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| 1024 | "%d:0713 SCSI layer issued LUN reset (%d, %d) " |
| 1025 | "Data: x%x x%x x%x\n", |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1026 | phba->brd_no, cmnd->device->id,cmnd->device->lun, |
| 1027 | ret, cmd_status, cmd_result); |
| 1028 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1029 | out: |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 1030 | spin_unlock_irq(shost->host_lock); |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1031 | lpfc_unblock_requests(phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1032 | return ret; |
| 1033 | } |
| 1034 | |
Jeff Garzik | 94d0e7b8 | 2005-05-28 07:55:48 -0400 | [diff] [blame] | 1035 | static int |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 1036 | lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1037 | { |
| 1038 | struct Scsi_Host *shost = cmnd->device->host; |
| 1039 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; |
| 1040 | struct lpfc_nodelist *ndlp = NULL; |
| 1041 | int match; |
| 1042 | int ret = FAILED, i, err_count = 0; |
| 1043 | int cnt, loopcnt; |
| 1044 | unsigned int midlayer_id = 0; |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 1045 | struct lpfc_scsi_buf * lpfc_cmd; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1046 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1047 | lpfc_block_requests(phba); |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 1048 | spin_lock_irq(shost->host_lock); |
| 1049 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 1050 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1051 | if (lpfc_cmd == NULL) |
| 1052 | goto out; |
| 1053 | |
| 1054 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ |
| 1055 | lpfc_cmd->timeout = 60; |
| 1056 | lpfc_cmd->pCmd = cmnd; |
| 1057 | lpfc_cmd->scsi_hba = phba; |
| 1058 | |
| 1059 | /* |
| 1060 | * Since the driver manages a single bus device, reset all |
| 1061 | * targets known to the driver. Should any target reset |
| 1062 | * fail, this routine returns failure to the midlayer. |
| 1063 | */ |
| 1064 | midlayer_id = cmnd->device->id; |
| 1065 | for (i = 0; i < MAX_FCP_TARGET; i++) { |
| 1066 | /* Search the mapped list for this target ID */ |
| 1067 | match = 0; |
| 1068 | list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) { |
| 1069 | if ((i == ndlp->nlp_sid) && ndlp->rport) { |
| 1070 | match = 1; |
| 1071 | break; |
| 1072 | } |
| 1073 | } |
| 1074 | if (!match) |
| 1075 | continue; |
| 1076 | |
| 1077 | lpfc_cmd->pCmd->device->id = i; |
| 1078 | lpfc_cmd->pCmd->device->hostdata = ndlp->rport->dd_data; |
| 1079 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, phba); |
| 1080 | if (ret != SUCCESS) { |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1081 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1082 | "%d:0713 Bus Reset on target %d failed\n", |
| 1083 | phba->brd_no, i); |
| 1084 | err_count++; |
| 1085 | } |
| 1086 | } |
| 1087 | |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1088 | if (err_count == 0) |
| 1089 | ret = SUCCESS; |
| 1090 | |
| 1091 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
| 1092 | |
| 1093 | /* |
| 1094 | * All outstanding txcmplq I/Os should have been aborted by |
| 1095 | * the targets. Unfortunately, some targets do not abide by |
| 1096 | * this forcing the driver to double check. |
| 1097 | */ |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1098 | cmnd->device->id = midlayer_id; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1099 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
| 1100 | 0, 0, LPFC_CTX_HOST); |
| 1101 | if (cnt) |
| 1102 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
| 1103 | 0, 0, 0, LPFC_CTX_HOST); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1104 | loopcnt = 0; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1105 | while(cnt) { |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1106 | spin_unlock_irq(phba->host->host_lock); |
Nishanth Aravamudan | a9a3047 | 2005-11-07 01:01:20 -0800 | [diff] [blame] | 1107 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1108 | spin_lock_irq(phba->host->host_lock); |
| 1109 | |
| 1110 | if (++loopcnt |
| 1111 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) |
| 1112 | break; |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1113 | |
| 1114 | cnt = lpfc_sli_sum_iocb(phba, |
| 1115 | &phba->sli.ring[phba->sli.fcp_ring], |
| 1116 | 0, 0, LPFC_CTX_HOST); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | if (cnt) { |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1120 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1121 | "%d:0715 Bus Reset I/O flush failure: cnt x%x left x%x\n", |
| 1122 | phba->brd_no, cnt, i); |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1123 | ret = FAILED; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1124 | } |
| 1125 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1126 | lpfc_printf_log(phba, |
| 1127 | KERN_ERR, |
| 1128 | LOG_FCP, |
| 1129 | "%d:0714 SCSI layer issued Bus Reset Data: x%x\n", |
| 1130 | phba->brd_no, ret); |
| 1131 | out: |
James.Smart@Emulex.Com | 63c59c3 | 2005-11-28 11:41:53 -0500 | [diff] [blame] | 1132 | spin_unlock_irq(shost->host_lock); |
James.Smart@Emulex.Com | 6175c02 | 2005-11-28 11:42:05 -0500 | [diff] [blame] | 1133 | lpfc_unblock_requests(phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1134 | return ret; |
| 1135 | } |
| 1136 | |
| 1137 | static int |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1138 | lpfc_slave_alloc(struct scsi_device *sdev) |
| 1139 | { |
| 1140 | struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata[0]; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1141 | struct lpfc_scsi_buf *scsi_buf = NULL; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1142 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1143 | uint32_t total = 0, i; |
| 1144 | uint32_t num_to_alloc = 0; |
| 1145 | unsigned long flags; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1146 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1147 | if (!rport || fc_remote_port_chkready(rport)) |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1148 | return -ENXIO; |
| 1149 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1150 | sdev->hostdata = rport->dd_data; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1151 | |
| 1152 | /* |
| 1153 | * Populate the cmds_per_lun count scsi_bufs into this host's globally |
| 1154 | * available list of scsi buffers. Don't allocate more than the |
James.Smart@Emulex.Com | a784efb | 2005-10-28 20:29:51 -0400 | [diff] [blame] | 1155 | * HBA limit conveyed to the midlayer via the host structure. The |
| 1156 | * formula accounts for the lun_queue_depth + error handlers + 1 |
| 1157 | * extra. This list of scsi bufs exists for the lifetime of the driver. |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1158 | */ |
| 1159 | total = phba->total_scsi_bufs; |
James.Smart@Emulex.Com | a784efb | 2005-10-28 20:29:51 -0400 | [diff] [blame] | 1160 | num_to_alloc = phba->cfg_lun_queue_depth + 2; |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1161 | if (total >= phba->cfg_hba_queue_depth) { |
James.Smart@Emulex.Com | a784efb | 2005-10-28 20:29:51 -0400 | [diff] [blame] | 1162 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 1163 | "%d:0704 At limitation of %d preallocated " |
| 1164 | "command buffers\n", phba->brd_no, total); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1165 | return 0; |
| 1166 | } else if (total + num_to_alloc > phba->cfg_hba_queue_depth) { |
James.Smart@Emulex.Com | a784efb | 2005-10-28 20:29:51 -0400 | [diff] [blame] | 1167 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
| 1168 | "%d:0705 Allocation request of %d command " |
| 1169 | "buffers will exceed max of %d. Reducing " |
| 1170 | "allocation request to %d.\n", phba->brd_no, |
| 1171 | num_to_alloc, phba->cfg_hba_queue_depth, |
| 1172 | (phba->cfg_hba_queue_depth - total)); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1173 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
| 1174 | } |
| 1175 | |
| 1176 | for (i = 0; i < num_to_alloc; i++) { |
James.Smart@Emulex.Com | 0bd4ca2 | 2005-10-28 20:30:02 -0400 | [diff] [blame] | 1177 | scsi_buf = lpfc_new_scsi_buf(phba); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1178 | if (!scsi_buf) { |
James.Smart@Emulex.Com | a784efb | 2005-10-28 20:29:51 -0400 | [diff] [blame] | 1179 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
| 1180 | "%d:0706 Failed to allocate command " |
| 1181 | "buffer\n", phba->brd_no); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1182 | break; |
| 1183 | } |
| 1184 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 1185 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1186 | phba->total_scsi_bufs++; |
| 1187 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 1188 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1189 | } |
| 1190 | return 0; |
| 1191 | } |
| 1192 | |
| 1193 | static int |
| 1194 | lpfc_slave_configure(struct scsi_device *sdev) |
| 1195 | { |
| 1196 | struct lpfc_hba *phba = (struct lpfc_hba *) sdev->host->hostdata[0]; |
| 1197 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); |
| 1198 | |
| 1199 | if (sdev->tagged_supported) |
| 1200 | scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth); |
| 1201 | else |
| 1202 | scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth); |
| 1203 | |
| 1204 | /* |
| 1205 | * Initialize the fc transport attributes for the target |
| 1206 | * containing this scsi device. Also note that the driver's |
| 1207 | * target pointer is stored in the starget_data for the |
| 1208 | * driver's sysfs entry point functions. |
| 1209 | */ |
| 1210 | rport->dev_loss_tmo = phba->cfg_nodev_tmo + 5; |
| 1211 | |
James.Smart@Emulex.Com | 875fbdf | 2005-11-29 16:32:13 -0500 | [diff] [blame^] | 1212 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
| 1213 | lpfc_sli_poll_fcp_ring(phba); |
| 1214 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
| 1215 | lpfc_poll_rearm_timer(phba); |
| 1216 | } |
| 1217 | |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1218 | return 0; |
| 1219 | } |
| 1220 | |
| 1221 | static void |
| 1222 | lpfc_slave_destroy(struct scsi_device *sdev) |
| 1223 | { |
| 1224 | sdev->hostdata = NULL; |
| 1225 | return; |
| 1226 | } |
| 1227 | |
| 1228 | struct scsi_host_template lpfc_template = { |
| 1229 | .module = THIS_MODULE, |
| 1230 | .name = LPFC_DRIVER_NAME, |
| 1231 | .info = lpfc_info, |
| 1232 | .queuecommand = lpfc_queuecommand, |
| 1233 | .eh_abort_handler = lpfc_abort_handler, |
| 1234 | .eh_device_reset_handler= lpfc_reset_lun_handler, |
| 1235 | .eh_bus_reset_handler = lpfc_reset_bus_handler, |
| 1236 | .slave_alloc = lpfc_slave_alloc, |
| 1237 | .slave_configure = lpfc_slave_configure, |
| 1238 | .slave_destroy = lpfc_slave_destroy, |
| 1239 | .this_id = -1, |
| 1240 | .sg_tablesize = LPFC_SG_SEG_CNT, |
| 1241 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
| 1242 | .use_clustering = ENABLE_CLUSTERING, |
| 1243 | .shost_attrs = lpfc_host_attrs, |
James.Smart@Emulex.Com | 564b296 | 2005-06-25 10:34:17 -0400 | [diff] [blame] | 1244 | .max_sectors = 0xFFFF, |
| dea3101 | 2005-04-17 16:05:31 -0500 | [diff] [blame] | 1245 | }; |