Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2005 - 2009 ServerEngines |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License version 2 |
| 7 | * as published by the Free Software Foundation. The full GNU General |
| 8 | * Public License is included in this distribution in the file called COPYING. |
| 9 | * |
| 10 | * Written by: Jayamohan Kallickal (jayamohank@serverengines.com) |
| 11 | * |
| 12 | * Contact Information: |
| 13 | * linux-drivers@serverengines.com |
| 14 | * |
| 15 | * ServerEngines |
| 16 | * 209 N. Fair Oaks Ave |
| 17 | * Sunnyvale, CA 94085 |
| 18 | * |
| 19 | */ |
| 20 | #include <linux/reboot.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/blkdev.h> |
| 24 | #include <linux/pci.h> |
| 25 | #include <linux/string.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/semaphore.h> |
| 28 | |
| 29 | #include <scsi/libiscsi.h> |
| 30 | #include <scsi/scsi_transport_iscsi.h> |
| 31 | #include <scsi/scsi_transport.h> |
| 32 | #include <scsi/scsi_cmnd.h> |
| 33 | #include <scsi/scsi_device.h> |
| 34 | #include <scsi/scsi_host.h> |
| 35 | #include <scsi/scsi.h> |
| 36 | #include "be_main.h" |
| 37 | #include "be_iscsi.h" |
| 38 | #include "be_mgmt.h" |
| 39 | |
| 40 | static unsigned int be_iopoll_budget = 10; |
| 41 | static unsigned int be_max_phys_size = 64; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 42 | static unsigned int enable_msix = 1; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 43 | |
| 44 | MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table); |
| 45 | MODULE_DESCRIPTION(DRV_DESC " " BUILD_STR); |
| 46 | MODULE_AUTHOR("ServerEngines Corporation"); |
| 47 | MODULE_LICENSE("GPL"); |
| 48 | module_param(be_iopoll_budget, int, 0); |
| 49 | module_param(enable_msix, int, 0); |
| 50 | module_param(be_max_phys_size, uint, S_IRUGO); |
| 51 | MODULE_PARM_DESC(be_max_phys_size, "Maximum Size (In Kilobytes) of physically" |
| 52 | "contiguous memory that can be allocated." |
| 53 | "Range is 16 - 128"); |
| 54 | |
| 55 | static int beiscsi_slave_configure(struct scsi_device *sdev) |
| 56 | { |
| 57 | blk_queue_max_segment_size(sdev->request_queue, 65536); |
| 58 | return 0; |
| 59 | } |
| 60 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 61 | /*------------------- PCI Driver operations and data ----------------- */ |
| 62 | static DEFINE_PCI_DEVICE_TABLE(beiscsi_pci_id_table) = { |
| 63 | { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) }, |
| 64 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) }, |
| 65 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) }, |
| 66 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) }, |
| 67 | { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID4) }, |
| 68 | { 0 } |
| 69 | }; |
| 70 | MODULE_DEVICE_TABLE(pci, beiscsi_pci_id_table); |
| 71 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 72 | static struct scsi_host_template beiscsi_sht = { |
| 73 | .module = THIS_MODULE, |
| 74 | .name = "ServerEngines 10Gbe open-iscsi Initiator Driver", |
| 75 | .proc_name = DRV_NAME, |
| 76 | .queuecommand = iscsi_queuecommand, |
| 77 | .eh_abort_handler = iscsi_eh_abort, |
| 78 | .change_queue_depth = iscsi_change_queue_depth, |
| 79 | .slave_configure = beiscsi_slave_configure, |
| 80 | .target_alloc = iscsi_target_alloc, |
| 81 | .eh_device_reset_handler = iscsi_eh_device_reset, |
| 82 | .eh_target_reset_handler = iscsi_eh_target_reset, |
| 83 | .sg_tablesize = BEISCSI_SGLIST_ELEMENTS, |
| 84 | .can_queue = BE2_IO_DEPTH, |
| 85 | .this_id = -1, |
| 86 | .max_sectors = BEISCSI_MAX_SECTORS, |
| 87 | .cmd_per_lun = BEISCSI_CMD_PER_LUN, |
| 88 | .use_clustering = ENABLE_CLUSTERING, |
| 89 | }; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 90 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 91 | static struct scsi_transport_template *beiscsi_scsi_transport; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 92 | |
| 93 | static struct beiscsi_hba *beiscsi_hba_alloc(struct pci_dev *pcidev) |
| 94 | { |
| 95 | struct beiscsi_hba *phba; |
| 96 | struct Scsi_Host *shost; |
| 97 | |
| 98 | shost = iscsi_host_alloc(&beiscsi_sht, sizeof(*phba), 0); |
| 99 | if (!shost) { |
| 100 | dev_err(&pcidev->dev, "beiscsi_hba_alloc -" |
| 101 | "iscsi_host_alloc failed \n"); |
| 102 | return NULL; |
| 103 | } |
| 104 | shost->dma_boundary = pcidev->dma_mask; |
| 105 | shost->max_id = BE2_MAX_SESSIONS; |
| 106 | shost->max_channel = 0; |
| 107 | shost->max_cmd_len = BEISCSI_MAX_CMD_LEN; |
| 108 | shost->max_lun = BEISCSI_NUM_MAX_LUN; |
| 109 | shost->transportt = beiscsi_scsi_transport; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 110 | phba = iscsi_host_priv(shost); |
| 111 | memset(phba, 0, sizeof(*phba)); |
| 112 | phba->shost = shost; |
| 113 | phba->pcidev = pci_dev_get(pcidev); |
| 114 | |
| 115 | if (iscsi_host_add(shost, &phba->pcidev->dev)) |
| 116 | goto free_devices; |
| 117 | return phba; |
| 118 | |
| 119 | free_devices: |
| 120 | pci_dev_put(phba->pcidev); |
| 121 | iscsi_host_free(phba->shost); |
| 122 | return NULL; |
| 123 | } |
| 124 | |
| 125 | static void beiscsi_unmap_pci_function(struct beiscsi_hba *phba) |
| 126 | { |
| 127 | if (phba->csr_va) { |
| 128 | iounmap(phba->csr_va); |
| 129 | phba->csr_va = NULL; |
| 130 | } |
| 131 | if (phba->db_va) { |
| 132 | iounmap(phba->db_va); |
| 133 | phba->db_va = NULL; |
| 134 | } |
| 135 | if (phba->pci_va) { |
| 136 | iounmap(phba->pci_va); |
| 137 | phba->pci_va = NULL; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | static int beiscsi_map_pci_bars(struct beiscsi_hba *phba, |
| 142 | struct pci_dev *pcidev) |
| 143 | { |
| 144 | u8 __iomem *addr; |
| 145 | |
| 146 | addr = ioremap_nocache(pci_resource_start(pcidev, 2), |
| 147 | pci_resource_len(pcidev, 2)); |
| 148 | if (addr == NULL) |
| 149 | return -ENOMEM; |
| 150 | phba->ctrl.csr = addr; |
| 151 | phba->csr_va = addr; |
| 152 | phba->csr_pa.u.a64.address = pci_resource_start(pcidev, 2); |
| 153 | |
| 154 | addr = ioremap_nocache(pci_resource_start(pcidev, 4), 128 * 1024); |
| 155 | if (addr == NULL) |
| 156 | goto pci_map_err; |
| 157 | phba->ctrl.db = addr; |
| 158 | phba->db_va = addr; |
| 159 | phba->db_pa.u.a64.address = pci_resource_start(pcidev, 4); |
| 160 | |
| 161 | addr = ioremap_nocache(pci_resource_start(pcidev, 1), |
| 162 | pci_resource_len(pcidev, 1)); |
| 163 | if (addr == NULL) |
| 164 | goto pci_map_err; |
| 165 | phba->ctrl.pcicfg = addr; |
| 166 | phba->pci_va = addr; |
| 167 | phba->pci_pa.u.a64.address = pci_resource_start(pcidev, 1); |
| 168 | return 0; |
| 169 | |
| 170 | pci_map_err: |
| 171 | beiscsi_unmap_pci_function(phba); |
| 172 | return -ENOMEM; |
| 173 | } |
| 174 | |
| 175 | static int beiscsi_enable_pci(struct pci_dev *pcidev) |
| 176 | { |
| 177 | int ret; |
| 178 | |
| 179 | ret = pci_enable_device(pcidev); |
| 180 | if (ret) { |
| 181 | dev_err(&pcidev->dev, "beiscsi_enable_pci - enable device " |
| 182 | "failed. Returning -ENODEV\n"); |
| 183 | return ret; |
| 184 | } |
| 185 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 186 | pci_set_master(pcidev); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 187 | if (pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(64))) { |
| 188 | ret = pci_set_consistent_dma_mask(pcidev, DMA_BIT_MASK(32)); |
| 189 | if (ret) { |
| 190 | dev_err(&pcidev->dev, "Could not set PCI DMA Mask\n"); |
| 191 | pci_disable_device(pcidev); |
| 192 | return ret; |
| 193 | } |
| 194 | } |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | static int be_ctrl_init(struct beiscsi_hba *phba, struct pci_dev *pdev) |
| 199 | { |
| 200 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 201 | struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced; |
| 202 | struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem; |
| 203 | int status = 0; |
| 204 | |
| 205 | ctrl->pdev = pdev; |
| 206 | status = beiscsi_map_pci_bars(phba, pdev); |
| 207 | if (status) |
| 208 | return status; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 209 | mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16; |
| 210 | mbox_mem_alloc->va = pci_alloc_consistent(pdev, |
| 211 | mbox_mem_alloc->size, |
| 212 | &mbox_mem_alloc->dma); |
| 213 | if (!mbox_mem_alloc->va) { |
| 214 | beiscsi_unmap_pci_function(phba); |
| 215 | status = -ENOMEM; |
| 216 | return status; |
| 217 | } |
| 218 | |
| 219 | mbox_mem_align->size = sizeof(struct be_mcc_mailbox); |
| 220 | mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16); |
| 221 | mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16); |
| 222 | memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox)); |
| 223 | spin_lock_init(&ctrl->mbox_lock); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 224 | spin_lock_init(&phba->ctrl.mcc_lock); |
| 225 | spin_lock_init(&phba->ctrl.mcc_cq_lock); |
| 226 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 227 | return status; |
| 228 | } |
| 229 | |
| 230 | static void beiscsi_get_params(struct beiscsi_hba *phba) |
| 231 | { |
| 232 | phba->params.ios_per_ctrl = BE2_IO_DEPTH; |
| 233 | phba->params.cxns_per_ctrl = BE2_MAX_SESSIONS; |
| 234 | phba->params.asyncpdus_per_ctrl = BE2_ASYNCPDUS; |
| 235 | phba->params.icds_per_ctrl = BE2_MAX_ICDS / 2; |
| 236 | phba->params.num_sge_per_io = BE2_SGE; |
| 237 | phba->params.defpdu_hdr_sz = BE2_DEFPDU_HDR_SZ; |
| 238 | phba->params.defpdu_data_sz = BE2_DEFPDU_DATA_SZ; |
| 239 | phba->params.eq_timer = 64; |
| 240 | phba->params.num_eq_entries = |
| 241 | (((BE2_CMDS_PER_CXN * 2 + BE2_LOGOUTS + BE2_TMFS + BE2_ASYNCPDUS) / |
| 242 | 512) + 1) * 512; |
| 243 | phba->params.num_eq_entries = (phba->params.num_eq_entries < 1024) |
| 244 | ? 1024 : phba->params.num_eq_entries; |
| 245 | SE_DEBUG(DBG_LVL_8, "phba->params.num_eq_entries=%d \n", |
| 246 | phba->params.num_eq_entries); |
| 247 | phba->params.num_cq_entries = |
| 248 | (((BE2_CMDS_PER_CXN * 2 + BE2_LOGOUTS + BE2_TMFS + BE2_ASYNCPDUS) / |
| 249 | 512) + 1) * 512; |
| 250 | SE_DEBUG(DBG_LVL_8, |
| 251 | "phba->params.num_cq_entries=%d BE2_CMDS_PER_CXN=%d" |
| 252 | "BE2_LOGOUTS=%d BE2_TMFS=%d BE2_ASYNCPDUS=%d \n", |
| 253 | phba->params.num_cq_entries, BE2_CMDS_PER_CXN, |
| 254 | BE2_LOGOUTS, BE2_TMFS, BE2_ASYNCPDUS); |
| 255 | phba->params.wrbs_per_cxn = 256; |
| 256 | } |
| 257 | |
| 258 | static void hwi_ring_eq_db(struct beiscsi_hba *phba, |
| 259 | unsigned int id, unsigned int clr_interrupt, |
| 260 | unsigned int num_processed, |
| 261 | unsigned char rearm, unsigned char event) |
| 262 | { |
| 263 | u32 val = 0; |
| 264 | val |= id & DB_EQ_RING_ID_MASK; |
| 265 | if (rearm) |
| 266 | val |= 1 << DB_EQ_REARM_SHIFT; |
| 267 | if (clr_interrupt) |
| 268 | val |= 1 << DB_EQ_CLR_SHIFT; |
| 269 | if (event) |
| 270 | val |= 1 << DB_EQ_EVNT_SHIFT; |
| 271 | val |= num_processed << DB_EQ_NUM_POPPED_SHIFT; |
| 272 | iowrite32(val, phba->db_va + DB_EQ_OFFSET); |
| 273 | } |
| 274 | |
| 275 | /** |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 276 | * be_isr_mcc - The isr routine of the driver. |
| 277 | * @irq: Not used |
| 278 | * @dev_id: Pointer to host adapter structure |
| 279 | */ |
| 280 | static irqreturn_t be_isr_mcc(int irq, void *dev_id) |
| 281 | { |
| 282 | struct beiscsi_hba *phba; |
| 283 | struct be_eq_entry *eqe = NULL; |
| 284 | struct be_queue_info *eq; |
| 285 | struct be_queue_info *mcc; |
| 286 | unsigned int num_eq_processed; |
| 287 | struct be_eq_obj *pbe_eq; |
| 288 | unsigned long flags; |
| 289 | |
| 290 | pbe_eq = dev_id; |
| 291 | eq = &pbe_eq->q; |
| 292 | phba = pbe_eq->phba; |
| 293 | mcc = &phba->ctrl.mcc_obj.cq; |
| 294 | eqe = queue_tail_node(eq); |
| 295 | if (!eqe) |
| 296 | SE_DEBUG(DBG_LVL_1, "eqe is NULL\n"); |
| 297 | |
| 298 | num_eq_processed = 0; |
| 299 | |
| 300 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 301 | & EQE_VALID_MASK) { |
| 302 | if (((eqe->dw[offsetof(struct amap_eq_entry, |
| 303 | resource_id) / 32] & |
| 304 | EQE_RESID_MASK) >> 16) == mcc->id) { |
| 305 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 306 | phba->todo_mcc_cq = 1; |
| 307 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
| 308 | } |
| 309 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 310 | queue_tail_inc(eq); |
| 311 | eqe = queue_tail_node(eq); |
| 312 | num_eq_processed++; |
| 313 | } |
| 314 | if (phba->todo_mcc_cq) |
| 315 | queue_work(phba->wq, &phba->work_cqs); |
| 316 | if (num_eq_processed) |
| 317 | hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1); |
| 318 | |
| 319 | return IRQ_HANDLED; |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * be_isr_msix - The isr routine of the driver. |
| 324 | * @irq: Not used |
| 325 | * @dev_id: Pointer to host adapter structure |
| 326 | */ |
| 327 | static irqreturn_t be_isr_msix(int irq, void *dev_id) |
| 328 | { |
| 329 | struct beiscsi_hba *phba; |
| 330 | struct be_eq_entry *eqe = NULL; |
| 331 | struct be_queue_info *eq; |
| 332 | struct be_queue_info *cq; |
| 333 | unsigned int num_eq_processed; |
| 334 | struct be_eq_obj *pbe_eq; |
| 335 | unsigned long flags; |
| 336 | |
| 337 | pbe_eq = dev_id; |
| 338 | eq = &pbe_eq->q; |
| 339 | cq = pbe_eq->cq; |
| 340 | eqe = queue_tail_node(eq); |
| 341 | if (!eqe) |
| 342 | SE_DEBUG(DBG_LVL_1, "eqe is NULL\n"); |
| 343 | |
| 344 | phba = pbe_eq->phba; |
| 345 | num_eq_processed = 0; |
| 346 | if (blk_iopoll_enabled) { |
| 347 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 348 | & EQE_VALID_MASK) { |
| 349 | if (!blk_iopoll_sched_prep(&pbe_eq->iopoll)) |
| 350 | blk_iopoll_sched(&pbe_eq->iopoll); |
| 351 | |
| 352 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 353 | queue_tail_inc(eq); |
| 354 | eqe = queue_tail_node(eq); |
| 355 | num_eq_processed++; |
| 356 | } |
| 357 | if (num_eq_processed) |
| 358 | hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 0, 1); |
| 359 | |
| 360 | return IRQ_HANDLED; |
| 361 | } else { |
| 362 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 363 | & EQE_VALID_MASK) { |
| 364 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 365 | phba->todo_cq = 1; |
| 366 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
| 367 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 368 | queue_tail_inc(eq); |
| 369 | eqe = queue_tail_node(eq); |
| 370 | num_eq_processed++; |
| 371 | } |
| 372 | if (phba->todo_cq) |
| 373 | queue_work(phba->wq, &phba->work_cqs); |
| 374 | |
| 375 | if (num_eq_processed) |
| 376 | hwi_ring_eq_db(phba, eq->id, 1, num_eq_processed, 1, 1); |
| 377 | |
| 378 | return IRQ_HANDLED; |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | /** |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 383 | * be_isr - The isr routine of the driver. |
| 384 | * @irq: Not used |
| 385 | * @dev_id: Pointer to host adapter structure |
| 386 | */ |
| 387 | static irqreturn_t be_isr(int irq, void *dev_id) |
| 388 | { |
| 389 | struct beiscsi_hba *phba; |
| 390 | struct hwi_controller *phwi_ctrlr; |
| 391 | struct hwi_context_memory *phwi_context; |
| 392 | struct be_eq_entry *eqe = NULL; |
| 393 | struct be_queue_info *eq; |
| 394 | struct be_queue_info *cq; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 395 | struct be_queue_info *mcc; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 396 | unsigned long flags, index; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 397 | unsigned int num_mcceq_processed, num_ioeq_processed; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 398 | struct be_ctrl_info *ctrl; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 399 | struct be_eq_obj *pbe_eq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 400 | int isr; |
| 401 | |
| 402 | phba = dev_id; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 403 | ctrl = &phba->ctrl;; |
| 404 | isr = ioread32(ctrl->csr + CEV_ISR0_OFFSET + |
| 405 | (PCI_FUNC(ctrl->pdev->devfn) * CEV_ISR_SIZE)); |
| 406 | if (!isr) |
| 407 | return IRQ_NONE; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 408 | |
| 409 | phwi_ctrlr = phba->phwi_ctrlr; |
| 410 | phwi_context = phwi_ctrlr->phwi_ctxt; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 411 | pbe_eq = &phwi_context->be_eq[0]; |
| 412 | |
| 413 | eq = &phwi_context->be_eq[0].q; |
| 414 | mcc = &phba->ctrl.mcc_obj.cq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 415 | index = 0; |
| 416 | eqe = queue_tail_node(eq); |
| 417 | if (!eqe) |
| 418 | SE_DEBUG(DBG_LVL_1, "eqe is NULL\n"); |
| 419 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 420 | num_ioeq_processed = 0; |
| 421 | num_mcceq_processed = 0; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 422 | if (blk_iopoll_enabled) { |
| 423 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 424 | & EQE_VALID_MASK) { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 425 | if (((eqe->dw[offsetof(struct amap_eq_entry, |
| 426 | resource_id) / 32] & |
| 427 | EQE_RESID_MASK) >> 16) == mcc->id) { |
| 428 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 429 | phba->todo_mcc_cq = 1; |
| 430 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
| 431 | num_mcceq_processed++; |
| 432 | } else { |
| 433 | if (!blk_iopoll_sched_prep(&pbe_eq->iopoll)) |
| 434 | blk_iopoll_sched(&pbe_eq->iopoll); |
| 435 | num_ioeq_processed++; |
| 436 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 437 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 438 | queue_tail_inc(eq); |
| 439 | eqe = queue_tail_node(eq); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 440 | } |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 441 | if (num_ioeq_processed || num_mcceq_processed) { |
| 442 | if (phba->todo_mcc_cq) |
| 443 | queue_work(phba->wq, &phba->work_cqs); |
| 444 | |
| 445 | if ((num_mcceq_processed) && (!num_ioeq_processed)) |
| 446 | hwi_ring_eq_db(phba, eq->id, 0, |
| 447 | (num_ioeq_processed + |
| 448 | num_mcceq_processed) , 1, 1); |
| 449 | else |
| 450 | hwi_ring_eq_db(phba, eq->id, 0, |
| 451 | (num_ioeq_processed + |
| 452 | num_mcceq_processed), 0, 1); |
| 453 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 454 | return IRQ_HANDLED; |
| 455 | } else |
| 456 | return IRQ_NONE; |
| 457 | } else { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 458 | cq = &phwi_context->be_cq[0]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 459 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 460 | & EQE_VALID_MASK) { |
| 461 | |
| 462 | if (((eqe->dw[offsetof(struct amap_eq_entry, |
| 463 | resource_id) / 32] & |
| 464 | EQE_RESID_MASK) >> 16) != cq->id) { |
| 465 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 466 | phba->todo_mcc_cq = 1; |
| 467 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
| 468 | } else { |
| 469 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 470 | phba->todo_cq = 1; |
| 471 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
| 472 | } |
| 473 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 474 | queue_tail_inc(eq); |
| 475 | eqe = queue_tail_node(eq); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 476 | num_ioeq_processed++; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 477 | } |
| 478 | if (phba->todo_cq || phba->todo_mcc_cq) |
| 479 | queue_work(phba->wq, &phba->work_cqs); |
| 480 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 481 | if (num_ioeq_processed) { |
| 482 | hwi_ring_eq_db(phba, eq->id, 0, |
| 483 | num_ioeq_processed, 1, 1); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 484 | return IRQ_HANDLED; |
| 485 | } else |
| 486 | return IRQ_NONE; |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | static int beiscsi_init_irqs(struct beiscsi_hba *phba) |
| 491 | { |
| 492 | struct pci_dev *pcidev = phba->pcidev; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 493 | struct hwi_controller *phwi_ctrlr; |
| 494 | struct hwi_context_memory *phwi_context; |
| 495 | int ret, msix_vec, i = 0; |
| 496 | char desc[32]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 497 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 498 | phwi_ctrlr = phba->phwi_ctrlr; |
| 499 | phwi_context = phwi_ctrlr->phwi_ctxt; |
| 500 | |
| 501 | if (phba->msix_enabled) { |
| 502 | for (i = 0; i < phba->num_cpus; i++) { |
| 503 | sprintf(desc, "beiscsi_msix_%04x", i); |
| 504 | msix_vec = phba->msix_entries[i].vector; |
| 505 | ret = request_irq(msix_vec, be_isr_msix, 0, desc, |
| 506 | &phwi_context->be_eq[i]); |
| 507 | } |
| 508 | msix_vec = phba->msix_entries[i].vector; |
| 509 | ret = request_irq(msix_vec, be_isr_mcc, 0, "beiscsi_msix_mcc", |
| 510 | &phwi_context->be_eq[i]); |
| 511 | } else { |
| 512 | ret = request_irq(pcidev->irq, be_isr, IRQF_SHARED, |
| 513 | "beiscsi", phba); |
| 514 | if (ret) { |
| 515 | shost_printk(KERN_ERR, phba->shost, "beiscsi_init_irqs-" |
| 516 | "Failed to register irq\\n"); |
| 517 | return ret; |
| 518 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 519 | } |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | static void hwi_ring_cq_db(struct beiscsi_hba *phba, |
| 524 | unsigned int id, unsigned int num_processed, |
| 525 | unsigned char rearm, unsigned char event) |
| 526 | { |
| 527 | u32 val = 0; |
| 528 | val |= id & DB_CQ_RING_ID_MASK; |
| 529 | if (rearm) |
| 530 | val |= 1 << DB_CQ_REARM_SHIFT; |
| 531 | val |= num_processed << DB_CQ_NUM_POPPED_SHIFT; |
| 532 | iowrite32(val, phba->db_va + DB_CQ_OFFSET); |
| 533 | } |
| 534 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 535 | static unsigned int |
| 536 | beiscsi_process_async_pdu(struct beiscsi_conn *beiscsi_conn, |
| 537 | struct beiscsi_hba *phba, |
| 538 | unsigned short cid, |
| 539 | struct pdu_base *ppdu, |
| 540 | unsigned long pdu_len, |
| 541 | void *pbuffer, unsigned long buf_len) |
| 542 | { |
| 543 | struct iscsi_conn *conn = beiscsi_conn->conn; |
| 544 | struct iscsi_session *session = conn->session; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 545 | struct iscsi_task *task; |
| 546 | struct beiscsi_io_task *io_task; |
| 547 | struct iscsi_hdr *login_hdr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 548 | |
| 549 | switch (ppdu->dw[offsetof(struct amap_pdu_base, opcode) / 32] & |
| 550 | PDUBASE_OPCODE_MASK) { |
| 551 | case ISCSI_OP_NOOP_IN: |
| 552 | pbuffer = NULL; |
| 553 | buf_len = 0; |
| 554 | break; |
| 555 | case ISCSI_OP_ASYNC_EVENT: |
| 556 | break; |
| 557 | case ISCSI_OP_REJECT: |
| 558 | WARN_ON(!pbuffer); |
| 559 | WARN_ON(!(buf_len == 48)); |
| 560 | SE_DEBUG(DBG_LVL_1, "In ISCSI_OP_REJECT\n"); |
| 561 | break; |
| 562 | case ISCSI_OP_LOGIN_RSP: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 563 | task = conn->login_task; |
| 564 | io_task = task->dd_data; |
| 565 | login_hdr = (struct iscsi_hdr *)ppdu; |
| 566 | login_hdr->itt = io_task->libiscsi_itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 567 | break; |
| 568 | default: |
| 569 | shost_printk(KERN_WARNING, phba->shost, |
| 570 | "Unrecognized opcode 0x%x in async msg \n", |
| 571 | (ppdu-> |
| 572 | dw[offsetof(struct amap_pdu_base, opcode) / 32] |
| 573 | & PDUBASE_OPCODE_MASK)); |
| 574 | return 1; |
| 575 | } |
| 576 | |
| 577 | spin_lock_bh(&session->lock); |
| 578 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)ppdu, pbuffer, buf_len); |
| 579 | spin_unlock_bh(&session->lock); |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba) |
| 584 | { |
| 585 | struct sgl_handle *psgl_handle; |
| 586 | |
| 587 | if (phba->io_sgl_hndl_avbl) { |
| 588 | SE_DEBUG(DBG_LVL_8, |
| 589 | "In alloc_io_sgl_handle,io_sgl_alloc_index=%d \n", |
| 590 | phba->io_sgl_alloc_index); |
| 591 | psgl_handle = phba->io_sgl_hndl_base[phba-> |
| 592 | io_sgl_alloc_index]; |
| 593 | phba->io_sgl_hndl_base[phba->io_sgl_alloc_index] = NULL; |
| 594 | phba->io_sgl_hndl_avbl--; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 595 | if (phba->io_sgl_alloc_index == (phba->params. |
| 596 | ios_per_ctrl - 1)) |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 597 | phba->io_sgl_alloc_index = 0; |
| 598 | else |
| 599 | phba->io_sgl_alloc_index++; |
| 600 | } else |
| 601 | psgl_handle = NULL; |
| 602 | return psgl_handle; |
| 603 | } |
| 604 | |
| 605 | static void |
| 606 | free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle) |
| 607 | { |
| 608 | SE_DEBUG(DBG_LVL_8, "In free_,io_sgl_free_index=%d \n", |
| 609 | phba->io_sgl_free_index); |
| 610 | if (phba->io_sgl_hndl_base[phba->io_sgl_free_index]) { |
| 611 | /* |
| 612 | * this can happen if clean_task is called on a task that |
| 613 | * failed in xmit_task or alloc_pdu. |
| 614 | */ |
| 615 | SE_DEBUG(DBG_LVL_8, |
| 616 | "Double Free in IO SGL io_sgl_free_index=%d," |
| 617 | "value there=%p \n", phba->io_sgl_free_index, |
| 618 | phba->io_sgl_hndl_base[phba->io_sgl_free_index]); |
| 619 | return; |
| 620 | } |
| 621 | phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle; |
| 622 | phba->io_sgl_hndl_avbl++; |
| 623 | if (phba->io_sgl_free_index == (phba->params.ios_per_ctrl - 1)) |
| 624 | phba->io_sgl_free_index = 0; |
| 625 | else |
| 626 | phba->io_sgl_free_index++; |
| 627 | } |
| 628 | |
| 629 | /** |
| 630 | * alloc_wrb_handle - To allocate a wrb handle |
| 631 | * @phba: The hba pointer |
| 632 | * @cid: The cid to use for allocation |
| 633 | * @index: index allocation and wrb index |
| 634 | * |
| 635 | * This happens under session_lock until submission to chip |
| 636 | */ |
| 637 | struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid, |
| 638 | int index) |
| 639 | { |
| 640 | struct hwi_wrb_context *pwrb_context; |
| 641 | struct hwi_controller *phwi_ctrlr; |
| 642 | struct wrb_handle *pwrb_handle; |
| 643 | |
| 644 | phwi_ctrlr = phba->phwi_ctrlr; |
| 645 | pwrb_context = &phwi_ctrlr->wrb_context[cid]; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 646 | if (pwrb_context->wrb_handles_available) { |
| 647 | pwrb_handle = pwrb_context->pwrb_handle_base[ |
| 648 | pwrb_context->alloc_index]; |
| 649 | pwrb_context->wrb_handles_available--; |
| 650 | pwrb_handle->nxt_wrb_index = pwrb_handle->wrb_index; |
| 651 | if (pwrb_context->alloc_index == |
| 652 | (phba->params.wrbs_per_cxn - 1)) |
| 653 | pwrb_context->alloc_index = 0; |
| 654 | else |
| 655 | pwrb_context->alloc_index++; |
| 656 | } else |
| 657 | pwrb_handle = NULL; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 658 | return pwrb_handle; |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * free_wrb_handle - To free the wrb handle back to pool |
| 663 | * @phba: The hba pointer |
| 664 | * @pwrb_context: The context to free from |
| 665 | * @pwrb_handle: The wrb_handle to free |
| 666 | * |
| 667 | * This happens under session_lock until submission to chip |
| 668 | */ |
| 669 | static void |
| 670 | free_wrb_handle(struct beiscsi_hba *phba, struct hwi_wrb_context *pwrb_context, |
| 671 | struct wrb_handle *pwrb_handle) |
| 672 | { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 673 | |
| 674 | pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle; |
| 675 | pwrb_context->wrb_handles_available++; |
| 676 | if (pwrb_context->free_index == (phba->params.wrbs_per_cxn - 1)) |
| 677 | pwrb_context->free_index = 0; |
| 678 | else |
| 679 | pwrb_context->free_index++; |
| 680 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 681 | SE_DEBUG(DBG_LVL_8, |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 682 | "FREE WRB: pwrb_handle=%p free_index=0x%x" |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 683 | "wrb_handles_available=%d \n", |
| 684 | pwrb_handle, pwrb_context->free_index, |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 685 | pwrb_context->wrb_handles_available); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba) |
| 689 | { |
| 690 | struct sgl_handle *psgl_handle; |
| 691 | |
| 692 | if (phba->eh_sgl_hndl_avbl) { |
| 693 | psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index]; |
| 694 | phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL; |
| 695 | SE_DEBUG(DBG_LVL_8, "mgmt_sgl_alloc_index=%d=0x%x \n", |
| 696 | phba->eh_sgl_alloc_index, phba->eh_sgl_alloc_index); |
| 697 | phba->eh_sgl_hndl_avbl--; |
| 698 | if (phba->eh_sgl_alloc_index == |
| 699 | (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - |
| 700 | 1)) |
| 701 | phba->eh_sgl_alloc_index = 0; |
| 702 | else |
| 703 | phba->eh_sgl_alloc_index++; |
| 704 | } else |
| 705 | psgl_handle = NULL; |
| 706 | return psgl_handle; |
| 707 | } |
| 708 | |
| 709 | void |
| 710 | free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle) |
| 711 | { |
| 712 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 713 | SE_DEBUG(DBG_LVL_8, "In free_mgmt_sgl_handle,eh_sgl_free_index=%d \n", |
| 714 | phba->eh_sgl_free_index); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 715 | if (phba->eh_sgl_hndl_base[phba->eh_sgl_free_index]) { |
| 716 | /* |
| 717 | * this can happen if clean_task is called on a task that |
| 718 | * failed in xmit_task or alloc_pdu. |
| 719 | */ |
| 720 | SE_DEBUG(DBG_LVL_8, |
| 721 | "Double Free in eh SGL ,eh_sgl_free_index=%d \n", |
| 722 | phba->eh_sgl_free_index); |
| 723 | return; |
| 724 | } |
| 725 | phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle; |
| 726 | phba->eh_sgl_hndl_avbl++; |
| 727 | if (phba->eh_sgl_free_index == |
| 728 | (phba->params.icds_per_ctrl - phba->params.ios_per_ctrl - 1)) |
| 729 | phba->eh_sgl_free_index = 0; |
| 730 | else |
| 731 | phba->eh_sgl_free_index++; |
| 732 | } |
| 733 | |
| 734 | static void |
| 735 | be_complete_io(struct beiscsi_conn *beiscsi_conn, |
| 736 | struct iscsi_task *task, struct sol_cqe *psol) |
| 737 | { |
| 738 | struct beiscsi_io_task *io_task = task->dd_data; |
| 739 | struct be_status_bhs *sts_bhs = |
| 740 | (struct be_status_bhs *)io_task->cmd_bhs; |
| 741 | struct iscsi_conn *conn = beiscsi_conn->conn; |
| 742 | unsigned int sense_len; |
| 743 | unsigned char *sense; |
| 744 | u32 resid = 0, exp_cmdsn, max_cmdsn; |
| 745 | u8 rsp, status, flags; |
| 746 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 747 | exp_cmdsn = (psol-> |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 748 | dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32] |
| 749 | & SOL_EXP_CMD_SN_MASK); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 750 | max_cmdsn = ((psol-> |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 751 | dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32] |
| 752 | & SOL_EXP_CMD_SN_MASK) + |
| 753 | ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd) |
| 754 | / 32] & SOL_CMD_WND_MASK) >> 24) - 1); |
| 755 | rsp = ((psol->dw[offsetof(struct amap_sol_cqe, i_resp) / 32] |
| 756 | & SOL_RESP_MASK) >> 16); |
| 757 | status = ((psol->dw[offsetof(struct amap_sol_cqe, i_sts) / 32] |
| 758 | & SOL_STS_MASK) >> 8); |
| 759 | flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32] |
| 760 | & SOL_FLAGS_MASK) >> 24) | 0x80; |
| 761 | |
| 762 | task->sc->result = (DID_OK << 16) | status; |
| 763 | if (rsp != ISCSI_STATUS_CMD_COMPLETED) { |
| 764 | task->sc->result = DID_ERROR << 16; |
| 765 | goto unmap; |
| 766 | } |
| 767 | |
| 768 | /* bidi not initially supported */ |
| 769 | if (flags & (ISCSI_FLAG_CMD_UNDERFLOW | ISCSI_FLAG_CMD_OVERFLOW)) { |
| 770 | resid = (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) / |
| 771 | 32] & SOL_RES_CNT_MASK); |
| 772 | |
| 773 | if (!status && (flags & ISCSI_FLAG_CMD_OVERFLOW)) |
| 774 | task->sc->result = DID_ERROR << 16; |
| 775 | |
| 776 | if (flags & ISCSI_FLAG_CMD_UNDERFLOW) { |
| 777 | scsi_set_resid(task->sc, resid); |
| 778 | if (!status && (scsi_bufflen(task->sc) - resid < |
| 779 | task->sc->underflow)) |
| 780 | task->sc->result = DID_ERROR << 16; |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | if (status == SAM_STAT_CHECK_CONDITION) { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 785 | unsigned short *slen = (unsigned short *)sts_bhs->sense_info; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 786 | sense = sts_bhs->sense_info + sizeof(unsigned short); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 787 | sense_len = cpu_to_be16(*slen); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 788 | memcpy(task->sc->sense_buffer, sense, |
| 789 | min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE)); |
| 790 | } |
| 791 | if (io_task->cmd_bhs->iscsi_hdr.flags & ISCSI_FLAG_CMD_READ) { |
| 792 | if (psol->dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32] |
| 793 | & SOL_RES_CNT_MASK) |
| 794 | conn->rxdata_octets += (psol-> |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 795 | dw[offsetof(struct amap_sol_cqe, i_res_cnt) / 32] |
| 796 | & SOL_RES_CNT_MASK); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 797 | } |
| 798 | unmap: |
| 799 | scsi_dma_unmap(io_task->scsi_cmnd); |
| 800 | iscsi_complete_scsi_task(task, exp_cmdsn, max_cmdsn); |
| 801 | } |
| 802 | |
| 803 | static void |
| 804 | be_complete_logout(struct beiscsi_conn *beiscsi_conn, |
| 805 | struct iscsi_task *task, struct sol_cqe *psol) |
| 806 | { |
| 807 | struct iscsi_logout_rsp *hdr; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 808 | struct beiscsi_io_task *io_task = task->dd_data; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 809 | struct iscsi_conn *conn = beiscsi_conn->conn; |
| 810 | |
| 811 | hdr = (struct iscsi_logout_rsp *)task->hdr; |
| 812 | hdr->t2wait = 5; |
| 813 | hdr->t2retain = 0; |
| 814 | hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32] |
| 815 | & SOL_FLAGS_MASK) >> 24) | 0x80; |
| 816 | hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) / |
| 817 | 32] & SOL_RESP_MASK); |
| 818 | hdr->exp_cmdsn = cpu_to_be32(psol-> |
| 819 | dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32] |
| 820 | & SOL_EXP_CMD_SN_MASK); |
| 821 | hdr->max_cmdsn = be32_to_cpu((psol-> |
| 822 | dw[offsetof(struct amap_sol_cqe, i_exp_cmd_sn) / 32] |
| 823 | & SOL_EXP_CMD_SN_MASK) + |
| 824 | ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd) |
| 825 | / 32] & SOL_CMD_WND_MASK) >> 24) - 1); |
| 826 | hdr->hlength = 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 827 | hdr->itt = io_task->libiscsi_itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 828 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); |
| 829 | } |
| 830 | |
| 831 | static void |
| 832 | be_complete_tmf(struct beiscsi_conn *beiscsi_conn, |
| 833 | struct iscsi_task *task, struct sol_cqe *psol) |
| 834 | { |
| 835 | struct iscsi_tm_rsp *hdr; |
| 836 | struct iscsi_conn *conn = beiscsi_conn->conn; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 837 | struct beiscsi_io_task *io_task = task->dd_data; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 838 | |
| 839 | hdr = (struct iscsi_tm_rsp *)task->hdr; |
| 840 | hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32] |
| 841 | & SOL_FLAGS_MASK) >> 24) | 0x80; |
| 842 | hdr->response = (psol->dw[offsetof(struct amap_sol_cqe, i_resp) / |
| 843 | 32] & SOL_RESP_MASK); |
| 844 | hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe, |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 845 | i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 846 | hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe, |
| 847 | i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) + |
| 848 | ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd) |
| 849 | / 32] & SOL_CMD_WND_MASK) >> 24) - 1); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 850 | hdr->itt = io_task->libiscsi_itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 851 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); |
| 852 | } |
| 853 | |
| 854 | static void |
| 855 | hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn, |
| 856 | struct beiscsi_hba *phba, struct sol_cqe *psol) |
| 857 | { |
| 858 | struct hwi_wrb_context *pwrb_context; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 859 | struct wrb_handle *pwrb_handle = NULL; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 860 | struct hwi_controller *phwi_ctrlr; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 861 | struct iscsi_task *task; |
| 862 | struct beiscsi_io_task *io_task; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 863 | struct iscsi_conn *conn = beiscsi_conn->conn; |
| 864 | struct iscsi_session *session = conn->session; |
| 865 | |
| 866 | phwi_ctrlr = phba->phwi_ctrlr; |
| 867 | pwrb_context = &phwi_ctrlr->wrb_context[((psol-> |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 868 | dw[offsetof(struct amap_sol_cqe, cid) / 32] & |
| 869 | SOL_CID_MASK) >> 6)]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 870 | pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol-> |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 871 | dw[offsetof(struct amap_sol_cqe, wrb_index) / |
| 872 | 32] & SOL_WRB_INDEX_MASK) >> 16)]; |
| 873 | task = pwrb_handle->pio_handle; |
| 874 | io_task = task->dd_data; |
| 875 | spin_lock(&phba->mgmt_sgl_lock); |
| 876 | free_mgmt_sgl_handle(phba, io_task->psgl_handle); |
| 877 | spin_unlock(&phba->mgmt_sgl_lock); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 878 | spin_lock_bh(&session->lock); |
| 879 | free_wrb_handle(phba, pwrb_context, pwrb_handle); |
| 880 | spin_unlock_bh(&session->lock); |
| 881 | } |
| 882 | |
| 883 | static void |
| 884 | be_complete_nopin_resp(struct beiscsi_conn *beiscsi_conn, |
| 885 | struct iscsi_task *task, struct sol_cqe *psol) |
| 886 | { |
| 887 | struct iscsi_nopin *hdr; |
| 888 | struct iscsi_conn *conn = beiscsi_conn->conn; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 889 | struct beiscsi_io_task *io_task = task->dd_data; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 890 | |
| 891 | hdr = (struct iscsi_nopin *)task->hdr; |
| 892 | hdr->flags = ((psol->dw[offsetof(struct amap_sol_cqe, i_flags) / 32] |
| 893 | & SOL_FLAGS_MASK) >> 24) | 0x80; |
| 894 | hdr->exp_cmdsn = cpu_to_be32(psol->dw[offsetof(struct amap_sol_cqe, |
| 895 | i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK); |
| 896 | hdr->max_cmdsn = be32_to_cpu((psol->dw[offsetof(struct amap_sol_cqe, |
| 897 | i_exp_cmd_sn) / 32] & SOL_EXP_CMD_SN_MASK) + |
| 898 | ((psol->dw[offsetof(struct amap_sol_cqe, i_cmd_wnd) |
| 899 | / 32] & SOL_CMD_WND_MASK) >> 24) - 1); |
| 900 | hdr->opcode = ISCSI_OP_NOOP_IN; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 901 | hdr->itt = io_task->libiscsi_itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 902 | __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); |
| 903 | } |
| 904 | |
| 905 | static void hwi_complete_cmd(struct beiscsi_conn *beiscsi_conn, |
| 906 | struct beiscsi_hba *phba, struct sol_cqe *psol) |
| 907 | { |
| 908 | struct hwi_wrb_context *pwrb_context; |
| 909 | struct wrb_handle *pwrb_handle; |
| 910 | struct iscsi_wrb *pwrb = NULL; |
| 911 | struct hwi_controller *phwi_ctrlr; |
| 912 | struct iscsi_task *task; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 913 | unsigned int type; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 914 | struct iscsi_conn *conn = beiscsi_conn->conn; |
| 915 | struct iscsi_session *session = conn->session; |
| 916 | |
| 917 | phwi_ctrlr = phba->phwi_ctrlr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 918 | pwrb_context = &phwi_ctrlr-> |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 919 | wrb_context[((psol->dw[offsetof |
| 920 | (struct amap_sol_cqe, cid) / 32] |
| 921 | & SOL_CID_MASK) >> 6)]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 922 | pwrb_handle = pwrb_context->pwrb_handle_basestd[((psol-> |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 923 | dw[offsetof(struct amap_sol_cqe, wrb_index) / |
| 924 | 32] & SOL_WRB_INDEX_MASK) >> 16)]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 925 | task = pwrb_handle->pio_handle; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 926 | pwrb = pwrb_handle->pwrb; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 927 | type = (pwrb->dw[offsetof(struct amap_iscsi_wrb, type) / 32] & |
| 928 | WRB_TYPE_MASK) >> 28; |
| 929 | |
| 930 | spin_lock_bh(&session->lock); |
| 931 | switch (type) { |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 932 | case HWH_TYPE_IO: |
| 933 | case HWH_TYPE_IO_RD: |
| 934 | if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == |
| 935 | ISCSI_OP_NOOP_OUT) { |
| 936 | be_complete_nopin_resp(beiscsi_conn, task, psol); |
| 937 | } else |
| 938 | be_complete_io(beiscsi_conn, task, psol); |
| 939 | break; |
| 940 | |
| 941 | case HWH_TYPE_LOGOUT: |
| 942 | be_complete_logout(beiscsi_conn, task, psol); |
| 943 | break; |
| 944 | |
| 945 | case HWH_TYPE_LOGIN: |
| 946 | SE_DEBUG(DBG_LVL_1, |
| 947 | "\t\t No HWH_TYPE_LOGIN Expected in hwi_complete_cmd" |
| 948 | "- Solicited path \n"); |
| 949 | break; |
| 950 | |
| 951 | case HWH_TYPE_TMF: |
| 952 | be_complete_tmf(beiscsi_conn, task, psol); |
| 953 | break; |
| 954 | |
| 955 | case HWH_TYPE_NOP: |
| 956 | be_complete_nopin_resp(beiscsi_conn, task, psol); |
| 957 | break; |
| 958 | |
| 959 | default: |
| 960 | shost_printk(KERN_WARNING, phba->shost, |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 961 | "In hwi_complete_cmd, unknown type = %d" |
| 962 | "wrb_index 0x%x CID 0x%x\n", type, |
| 963 | ((psol->dw[offsetof(struct amap_iscsi_wrb, |
| 964 | type) / 32] & SOL_WRB_INDEX_MASK) >> 16), |
| 965 | ((psol->dw[offsetof(struct amap_sol_cqe, |
| 966 | cid) / 32] & SOL_CID_MASK) >> 6)); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 967 | break; |
| 968 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 969 | spin_unlock_bh(&session->lock); |
| 970 | } |
| 971 | |
| 972 | static struct list_head *hwi_get_async_busy_list(struct hwi_async_pdu_context |
| 973 | *pasync_ctx, unsigned int is_header, |
| 974 | unsigned int host_write_ptr) |
| 975 | { |
| 976 | if (is_header) |
| 977 | return &pasync_ctx->async_entry[host_write_ptr]. |
| 978 | header_busy_list; |
| 979 | else |
| 980 | return &pasync_ctx->async_entry[host_write_ptr].data_busy_list; |
| 981 | } |
| 982 | |
| 983 | static struct async_pdu_handle * |
| 984 | hwi_get_async_handle(struct beiscsi_hba *phba, |
| 985 | struct beiscsi_conn *beiscsi_conn, |
| 986 | struct hwi_async_pdu_context *pasync_ctx, |
| 987 | struct i_t_dpdu_cqe *pdpdu_cqe, unsigned int *pcq_index) |
| 988 | { |
| 989 | struct be_bus_address phys_addr; |
| 990 | struct list_head *pbusy_list; |
| 991 | struct async_pdu_handle *pasync_handle = NULL; |
| 992 | int buffer_len = 0; |
| 993 | unsigned char buffer_index = -1; |
| 994 | unsigned char is_header = 0; |
| 995 | |
| 996 | phys_addr.u.a32.address_lo = |
| 997 | pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_lo) / 32] - |
| 998 | ((pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32] |
| 999 | & PDUCQE_DPL_MASK) >> 16); |
| 1000 | phys_addr.u.a32.address_hi = |
| 1001 | pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, db_addr_hi) / 32]; |
| 1002 | |
| 1003 | phys_addr.u.a64.address = |
| 1004 | *((unsigned long long *)(&phys_addr.u.a64.address)); |
| 1005 | |
| 1006 | switch (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, code) / 32] |
| 1007 | & PDUCQE_CODE_MASK) { |
| 1008 | case UNSOL_HDR_NOTIFY: |
| 1009 | is_header = 1; |
| 1010 | |
| 1011 | pbusy_list = hwi_get_async_busy_list(pasync_ctx, 1, |
| 1012 | (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, |
| 1013 | index) / 32] & PDUCQE_INDEX_MASK)); |
| 1014 | |
| 1015 | buffer_len = (unsigned int)(phys_addr.u.a64.address - |
| 1016 | pasync_ctx->async_header.pa_base.u.a64.address); |
| 1017 | |
| 1018 | buffer_index = buffer_len / |
| 1019 | pasync_ctx->async_header.buffer_size; |
| 1020 | |
| 1021 | break; |
| 1022 | case UNSOL_DATA_NOTIFY: |
| 1023 | pbusy_list = hwi_get_async_busy_list(pasync_ctx, 0, (pdpdu_cqe-> |
| 1024 | dw[offsetof(struct amap_i_t_dpdu_cqe, |
| 1025 | index) / 32] & PDUCQE_INDEX_MASK)); |
| 1026 | buffer_len = (unsigned long)(phys_addr.u.a64.address - |
| 1027 | pasync_ctx->async_data.pa_base.u. |
| 1028 | a64.address); |
| 1029 | buffer_index = buffer_len / pasync_ctx->async_data.buffer_size; |
| 1030 | break; |
| 1031 | default: |
| 1032 | pbusy_list = NULL; |
| 1033 | shost_printk(KERN_WARNING, phba->shost, |
| 1034 | "Unexpected code=%d \n", |
| 1035 | pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, |
| 1036 | code) / 32] & PDUCQE_CODE_MASK); |
| 1037 | return NULL; |
| 1038 | } |
| 1039 | |
| 1040 | WARN_ON(!(buffer_index <= pasync_ctx->async_data.num_entries)); |
| 1041 | WARN_ON(list_empty(pbusy_list)); |
| 1042 | list_for_each_entry(pasync_handle, pbusy_list, link) { |
| 1043 | WARN_ON(pasync_handle->consumed); |
| 1044 | if (pasync_handle->index == buffer_index) |
| 1045 | break; |
| 1046 | } |
| 1047 | |
| 1048 | WARN_ON(!pasync_handle); |
| 1049 | |
| 1050 | pasync_handle->cri = (unsigned short)beiscsi_conn->beiscsi_conn_cid; |
| 1051 | pasync_handle->is_header = is_header; |
| 1052 | pasync_handle->buffer_len = ((pdpdu_cqe-> |
| 1053 | dw[offsetof(struct amap_i_t_dpdu_cqe, dpl) / 32] |
| 1054 | & PDUCQE_DPL_MASK) >> 16); |
| 1055 | |
| 1056 | *pcq_index = (pdpdu_cqe->dw[offsetof(struct amap_i_t_dpdu_cqe, |
| 1057 | index) / 32] & PDUCQE_INDEX_MASK); |
| 1058 | return pasync_handle; |
| 1059 | } |
| 1060 | |
| 1061 | static unsigned int |
| 1062 | hwi_update_async_writables(struct hwi_async_pdu_context *pasync_ctx, |
| 1063 | unsigned int is_header, unsigned int cq_index) |
| 1064 | { |
| 1065 | struct list_head *pbusy_list; |
| 1066 | struct async_pdu_handle *pasync_handle; |
| 1067 | unsigned int num_entries, writables = 0; |
| 1068 | unsigned int *pep_read_ptr, *pwritables; |
| 1069 | |
| 1070 | |
| 1071 | if (is_header) { |
| 1072 | pep_read_ptr = &pasync_ctx->async_header.ep_read_ptr; |
| 1073 | pwritables = &pasync_ctx->async_header.writables; |
| 1074 | num_entries = pasync_ctx->async_header.num_entries; |
| 1075 | } else { |
| 1076 | pep_read_ptr = &pasync_ctx->async_data.ep_read_ptr; |
| 1077 | pwritables = &pasync_ctx->async_data.writables; |
| 1078 | num_entries = pasync_ctx->async_data.num_entries; |
| 1079 | } |
| 1080 | |
| 1081 | while ((*pep_read_ptr) != cq_index) { |
| 1082 | (*pep_read_ptr)++; |
| 1083 | *pep_read_ptr = (*pep_read_ptr) % num_entries; |
| 1084 | |
| 1085 | pbusy_list = hwi_get_async_busy_list(pasync_ctx, is_header, |
| 1086 | *pep_read_ptr); |
| 1087 | if (writables == 0) |
| 1088 | WARN_ON(list_empty(pbusy_list)); |
| 1089 | |
| 1090 | if (!list_empty(pbusy_list)) { |
| 1091 | pasync_handle = list_entry(pbusy_list->next, |
| 1092 | struct async_pdu_handle, |
| 1093 | link); |
| 1094 | WARN_ON(!pasync_handle); |
| 1095 | pasync_handle->consumed = 1; |
| 1096 | } |
| 1097 | |
| 1098 | writables++; |
| 1099 | } |
| 1100 | |
| 1101 | if (!writables) { |
| 1102 | SE_DEBUG(DBG_LVL_1, |
| 1103 | "Duplicate notification received - index 0x%x!!\n", |
| 1104 | cq_index); |
| 1105 | WARN_ON(1); |
| 1106 | } |
| 1107 | |
| 1108 | *pwritables = *pwritables + writables; |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | static unsigned int hwi_free_async_msg(struct beiscsi_hba *phba, |
| 1113 | unsigned int cri) |
| 1114 | { |
| 1115 | struct hwi_controller *phwi_ctrlr; |
| 1116 | struct hwi_async_pdu_context *pasync_ctx; |
| 1117 | struct async_pdu_handle *pasync_handle, *tmp_handle; |
| 1118 | struct list_head *plist; |
| 1119 | unsigned int i = 0; |
| 1120 | |
| 1121 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1122 | pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr); |
| 1123 | |
| 1124 | plist = &pasync_ctx->async_entry[cri].wait_queue.list; |
| 1125 | |
| 1126 | list_for_each_entry_safe(pasync_handle, tmp_handle, plist, link) { |
| 1127 | list_del(&pasync_handle->link); |
| 1128 | |
| 1129 | if (i == 0) { |
| 1130 | list_add_tail(&pasync_handle->link, |
| 1131 | &pasync_ctx->async_header.free_list); |
| 1132 | pasync_ctx->async_header.free_entries++; |
| 1133 | i++; |
| 1134 | } else { |
| 1135 | list_add_tail(&pasync_handle->link, |
| 1136 | &pasync_ctx->async_data.free_list); |
| 1137 | pasync_ctx->async_data.free_entries++; |
| 1138 | i++; |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | INIT_LIST_HEAD(&pasync_ctx->async_entry[cri].wait_queue.list); |
| 1143 | pasync_ctx->async_entry[cri].wait_queue.hdr_received = 0; |
| 1144 | pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0; |
| 1145 | return 0; |
| 1146 | } |
| 1147 | |
| 1148 | static struct phys_addr * |
| 1149 | hwi_get_ring_address(struct hwi_async_pdu_context *pasync_ctx, |
| 1150 | unsigned int is_header, unsigned int host_write_ptr) |
| 1151 | { |
| 1152 | struct phys_addr *pasync_sge = NULL; |
| 1153 | |
| 1154 | if (is_header) |
| 1155 | pasync_sge = pasync_ctx->async_header.ring_base; |
| 1156 | else |
| 1157 | pasync_sge = pasync_ctx->async_data.ring_base; |
| 1158 | |
| 1159 | return pasync_sge + host_write_ptr; |
| 1160 | } |
| 1161 | |
| 1162 | static void hwi_post_async_buffers(struct beiscsi_hba *phba, |
| 1163 | unsigned int is_header) |
| 1164 | { |
| 1165 | struct hwi_controller *phwi_ctrlr; |
| 1166 | struct hwi_async_pdu_context *pasync_ctx; |
| 1167 | struct async_pdu_handle *pasync_handle; |
| 1168 | struct list_head *pfree_link, *pbusy_list; |
| 1169 | struct phys_addr *pasync_sge; |
| 1170 | unsigned int ring_id, num_entries; |
| 1171 | unsigned int host_write_num; |
| 1172 | unsigned int writables; |
| 1173 | unsigned int i = 0; |
| 1174 | u32 doorbell = 0; |
| 1175 | |
| 1176 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1177 | pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr); |
| 1178 | |
| 1179 | if (is_header) { |
| 1180 | num_entries = pasync_ctx->async_header.num_entries; |
| 1181 | writables = min(pasync_ctx->async_header.writables, |
| 1182 | pasync_ctx->async_header.free_entries); |
| 1183 | pfree_link = pasync_ctx->async_header.free_list.next; |
| 1184 | host_write_num = pasync_ctx->async_header.host_write_ptr; |
| 1185 | ring_id = phwi_ctrlr->default_pdu_hdr.id; |
| 1186 | } else { |
| 1187 | num_entries = pasync_ctx->async_data.num_entries; |
| 1188 | writables = min(pasync_ctx->async_data.writables, |
| 1189 | pasync_ctx->async_data.free_entries); |
| 1190 | pfree_link = pasync_ctx->async_data.free_list.next; |
| 1191 | host_write_num = pasync_ctx->async_data.host_write_ptr; |
| 1192 | ring_id = phwi_ctrlr->default_pdu_data.id; |
| 1193 | } |
| 1194 | |
| 1195 | writables = (writables / 8) * 8; |
| 1196 | if (writables) { |
| 1197 | for (i = 0; i < writables; i++) { |
| 1198 | pbusy_list = |
| 1199 | hwi_get_async_busy_list(pasync_ctx, is_header, |
| 1200 | host_write_num); |
| 1201 | pasync_handle = |
| 1202 | list_entry(pfree_link, struct async_pdu_handle, |
| 1203 | link); |
| 1204 | WARN_ON(!pasync_handle); |
| 1205 | pasync_handle->consumed = 0; |
| 1206 | |
| 1207 | pfree_link = pfree_link->next; |
| 1208 | |
| 1209 | pasync_sge = hwi_get_ring_address(pasync_ctx, |
| 1210 | is_header, host_write_num); |
| 1211 | |
| 1212 | pasync_sge->hi = pasync_handle->pa.u.a32.address_lo; |
| 1213 | pasync_sge->lo = pasync_handle->pa.u.a32.address_hi; |
| 1214 | |
| 1215 | list_move(&pasync_handle->link, pbusy_list); |
| 1216 | |
| 1217 | host_write_num++; |
| 1218 | host_write_num = host_write_num % num_entries; |
| 1219 | } |
| 1220 | |
| 1221 | if (is_header) { |
| 1222 | pasync_ctx->async_header.host_write_ptr = |
| 1223 | host_write_num; |
| 1224 | pasync_ctx->async_header.free_entries -= writables; |
| 1225 | pasync_ctx->async_header.writables -= writables; |
| 1226 | pasync_ctx->async_header.busy_entries += writables; |
| 1227 | } else { |
| 1228 | pasync_ctx->async_data.host_write_ptr = host_write_num; |
| 1229 | pasync_ctx->async_data.free_entries -= writables; |
| 1230 | pasync_ctx->async_data.writables -= writables; |
| 1231 | pasync_ctx->async_data.busy_entries += writables; |
| 1232 | } |
| 1233 | |
| 1234 | doorbell |= ring_id & DB_DEF_PDU_RING_ID_MASK; |
| 1235 | doorbell |= 1 << DB_DEF_PDU_REARM_SHIFT; |
| 1236 | doorbell |= 0 << DB_DEF_PDU_EVENT_SHIFT; |
| 1237 | doorbell |= (writables & DB_DEF_PDU_CQPROC_MASK) |
| 1238 | << DB_DEF_PDU_CQPROC_SHIFT; |
| 1239 | |
| 1240 | iowrite32(doorbell, phba->db_va + DB_RXULP0_OFFSET); |
| 1241 | } |
| 1242 | } |
| 1243 | |
| 1244 | static void hwi_flush_default_pdu_buffer(struct beiscsi_hba *phba, |
| 1245 | struct beiscsi_conn *beiscsi_conn, |
| 1246 | struct i_t_dpdu_cqe *pdpdu_cqe) |
| 1247 | { |
| 1248 | struct hwi_controller *phwi_ctrlr; |
| 1249 | struct hwi_async_pdu_context *pasync_ctx; |
| 1250 | struct async_pdu_handle *pasync_handle = NULL; |
| 1251 | unsigned int cq_index = -1; |
| 1252 | |
| 1253 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1254 | pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr); |
| 1255 | |
| 1256 | pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx, |
| 1257 | pdpdu_cqe, &cq_index); |
| 1258 | BUG_ON(pasync_handle->is_header != 0); |
| 1259 | if (pasync_handle->consumed == 0) |
| 1260 | hwi_update_async_writables(pasync_ctx, pasync_handle->is_header, |
| 1261 | cq_index); |
| 1262 | |
| 1263 | hwi_free_async_msg(phba, pasync_handle->cri); |
| 1264 | hwi_post_async_buffers(phba, pasync_handle->is_header); |
| 1265 | } |
| 1266 | |
| 1267 | static unsigned int |
| 1268 | hwi_fwd_async_msg(struct beiscsi_conn *beiscsi_conn, |
| 1269 | struct beiscsi_hba *phba, |
| 1270 | struct hwi_async_pdu_context *pasync_ctx, unsigned short cri) |
| 1271 | { |
| 1272 | struct list_head *plist; |
| 1273 | struct async_pdu_handle *pasync_handle; |
| 1274 | void *phdr = NULL; |
| 1275 | unsigned int hdr_len = 0, buf_len = 0; |
| 1276 | unsigned int status, index = 0, offset = 0; |
| 1277 | void *pfirst_buffer = NULL; |
| 1278 | unsigned int num_buf = 0; |
| 1279 | |
| 1280 | plist = &pasync_ctx->async_entry[cri].wait_queue.list; |
| 1281 | |
| 1282 | list_for_each_entry(pasync_handle, plist, link) { |
| 1283 | if (index == 0) { |
| 1284 | phdr = pasync_handle->pbuffer; |
| 1285 | hdr_len = pasync_handle->buffer_len; |
| 1286 | } else { |
| 1287 | buf_len = pasync_handle->buffer_len; |
| 1288 | if (!num_buf) { |
| 1289 | pfirst_buffer = pasync_handle->pbuffer; |
| 1290 | num_buf++; |
| 1291 | } |
| 1292 | memcpy(pfirst_buffer + offset, |
| 1293 | pasync_handle->pbuffer, buf_len); |
| 1294 | offset = buf_len; |
| 1295 | } |
| 1296 | index++; |
| 1297 | } |
| 1298 | |
| 1299 | status = beiscsi_process_async_pdu(beiscsi_conn, phba, |
| 1300 | beiscsi_conn->beiscsi_conn_cid, |
| 1301 | phdr, hdr_len, pfirst_buffer, |
| 1302 | buf_len); |
| 1303 | |
| 1304 | if (status == 0) |
| 1305 | hwi_free_async_msg(phba, cri); |
| 1306 | return 0; |
| 1307 | } |
| 1308 | |
| 1309 | static unsigned int |
| 1310 | hwi_gather_async_pdu(struct beiscsi_conn *beiscsi_conn, |
| 1311 | struct beiscsi_hba *phba, |
| 1312 | struct async_pdu_handle *pasync_handle) |
| 1313 | { |
| 1314 | struct hwi_async_pdu_context *pasync_ctx; |
| 1315 | struct hwi_controller *phwi_ctrlr; |
| 1316 | unsigned int bytes_needed = 0, status = 0; |
| 1317 | unsigned short cri = pasync_handle->cri; |
| 1318 | struct pdu_base *ppdu; |
| 1319 | |
| 1320 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1321 | pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr); |
| 1322 | |
| 1323 | list_del(&pasync_handle->link); |
| 1324 | if (pasync_handle->is_header) { |
| 1325 | pasync_ctx->async_header.busy_entries--; |
| 1326 | if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) { |
| 1327 | hwi_free_async_msg(phba, cri); |
| 1328 | BUG(); |
| 1329 | } |
| 1330 | |
| 1331 | pasync_ctx->async_entry[cri].wait_queue.bytes_received = 0; |
| 1332 | pasync_ctx->async_entry[cri].wait_queue.hdr_received = 1; |
| 1333 | pasync_ctx->async_entry[cri].wait_queue.hdr_len = |
| 1334 | (unsigned short)pasync_handle->buffer_len; |
| 1335 | list_add_tail(&pasync_handle->link, |
| 1336 | &pasync_ctx->async_entry[cri].wait_queue.list); |
| 1337 | |
| 1338 | ppdu = pasync_handle->pbuffer; |
| 1339 | bytes_needed = ((((ppdu->dw[offsetof(struct amap_pdu_base, |
| 1340 | data_len_hi) / 32] & PDUBASE_DATALENHI_MASK) << 8) & |
| 1341 | 0xFFFF0000) | ((be16_to_cpu((ppdu-> |
| 1342 | dw[offsetof(struct amap_pdu_base, data_len_lo) / 32] |
| 1343 | & PDUBASE_DATALENLO_MASK) >> 16)) & 0x0000FFFF)); |
| 1344 | |
| 1345 | if (status == 0) { |
| 1346 | pasync_ctx->async_entry[cri].wait_queue.bytes_needed = |
| 1347 | bytes_needed; |
| 1348 | |
| 1349 | if (bytes_needed == 0) |
| 1350 | status = hwi_fwd_async_msg(beiscsi_conn, phba, |
| 1351 | pasync_ctx, cri); |
| 1352 | } |
| 1353 | } else { |
| 1354 | pasync_ctx->async_data.busy_entries--; |
| 1355 | if (pasync_ctx->async_entry[cri].wait_queue.hdr_received) { |
| 1356 | list_add_tail(&pasync_handle->link, |
| 1357 | &pasync_ctx->async_entry[cri].wait_queue. |
| 1358 | list); |
| 1359 | pasync_ctx->async_entry[cri].wait_queue. |
| 1360 | bytes_received += |
| 1361 | (unsigned short)pasync_handle->buffer_len; |
| 1362 | |
| 1363 | if (pasync_ctx->async_entry[cri].wait_queue. |
| 1364 | bytes_received >= |
| 1365 | pasync_ctx->async_entry[cri].wait_queue. |
| 1366 | bytes_needed) |
| 1367 | status = hwi_fwd_async_msg(beiscsi_conn, phba, |
| 1368 | pasync_ctx, cri); |
| 1369 | } |
| 1370 | } |
| 1371 | return status; |
| 1372 | } |
| 1373 | |
| 1374 | static void hwi_process_default_pdu_ring(struct beiscsi_conn *beiscsi_conn, |
| 1375 | struct beiscsi_hba *phba, |
| 1376 | struct i_t_dpdu_cqe *pdpdu_cqe) |
| 1377 | { |
| 1378 | struct hwi_controller *phwi_ctrlr; |
| 1379 | struct hwi_async_pdu_context *pasync_ctx; |
| 1380 | struct async_pdu_handle *pasync_handle = NULL; |
| 1381 | unsigned int cq_index = -1; |
| 1382 | |
| 1383 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1384 | pasync_ctx = HWI_GET_ASYNC_PDU_CTX(phwi_ctrlr); |
| 1385 | pasync_handle = hwi_get_async_handle(phba, beiscsi_conn, pasync_ctx, |
| 1386 | pdpdu_cqe, &cq_index); |
| 1387 | |
| 1388 | if (pasync_handle->consumed == 0) |
| 1389 | hwi_update_async_writables(pasync_ctx, pasync_handle->is_header, |
| 1390 | cq_index); |
| 1391 | hwi_gather_async_pdu(beiscsi_conn, phba, pasync_handle); |
| 1392 | hwi_post_async_buffers(phba, pasync_handle->is_header); |
| 1393 | } |
| 1394 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1395 | |
| 1396 | static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq) |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1397 | { |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1398 | struct be_queue_info *cq; |
| 1399 | struct sol_cqe *sol; |
| 1400 | struct dmsg_cqe *dmsg; |
| 1401 | unsigned int num_processed = 0; |
| 1402 | unsigned int tot_nump = 0; |
| 1403 | struct beiscsi_conn *beiscsi_conn; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1404 | struct beiscsi_hba *phba; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1405 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1406 | cq = pbe_eq->cq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1407 | sol = queue_tail_node(cq); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1408 | phba = pbe_eq->phba; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1409 | |
| 1410 | while (sol->dw[offsetof(struct amap_sol_cqe, valid) / 32] & |
| 1411 | CQE_VALID_MASK) { |
| 1412 | be_dws_le_to_cpu(sol, sizeof(struct sol_cqe)); |
| 1413 | |
| 1414 | beiscsi_conn = phba->conn_table[(u32) (sol-> |
| 1415 | dw[offsetof(struct amap_sol_cqe, cid) / 32] & |
| 1416 | SOL_CID_MASK) >> 6]; |
| 1417 | |
| 1418 | if (!beiscsi_conn || !beiscsi_conn->ep) { |
| 1419 | shost_printk(KERN_WARNING, phba->shost, |
| 1420 | "Connection table empty for cid = %d\n", |
| 1421 | (u32)(sol->dw[offsetof(struct amap_sol_cqe, |
| 1422 | cid) / 32] & SOL_CID_MASK) >> 6); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1423 | return 0; |
| 1424 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1425 | |
| 1426 | if (num_processed >= 32) { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1427 | hwi_ring_cq_db(phba, cq->id, |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1428 | num_processed, 0, 0); |
| 1429 | tot_nump += num_processed; |
| 1430 | num_processed = 0; |
| 1431 | } |
| 1432 | |
| 1433 | switch ((u32) sol->dw[offsetof(struct amap_sol_cqe, code) / |
| 1434 | 32] & CQE_CODE_MASK) { |
| 1435 | case SOL_CMD_COMPLETE: |
| 1436 | hwi_complete_cmd(beiscsi_conn, phba, sol); |
| 1437 | break; |
| 1438 | case DRIVERMSG_NOTIFY: |
| 1439 | SE_DEBUG(DBG_LVL_8, "Received DRIVERMSG_NOTIFY \n"); |
| 1440 | dmsg = (struct dmsg_cqe *)sol; |
| 1441 | hwi_complete_drvr_msgs(beiscsi_conn, phba, sol); |
| 1442 | break; |
| 1443 | case UNSOL_HDR_NOTIFY: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1444 | SE_DEBUG(DBG_LVL_8, "Received UNSOL_HDR_ NOTIFY\n"); |
| 1445 | hwi_process_default_pdu_ring(beiscsi_conn, phba, |
| 1446 | (struct i_t_dpdu_cqe *)sol); |
| 1447 | break; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1448 | case UNSOL_DATA_NOTIFY: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1449 | SE_DEBUG(DBG_LVL_8, "Received UNSOL_DATA_NOTIFY\n"); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1450 | hwi_process_default_pdu_ring(beiscsi_conn, phba, |
| 1451 | (struct i_t_dpdu_cqe *)sol); |
| 1452 | break; |
| 1453 | case CXN_INVALIDATE_INDEX_NOTIFY: |
| 1454 | case CMD_INVALIDATED_NOTIFY: |
| 1455 | case CXN_INVALIDATE_NOTIFY: |
| 1456 | SE_DEBUG(DBG_LVL_1, |
| 1457 | "Ignoring CQ Error notification for cmd/cxn" |
| 1458 | "invalidate\n"); |
| 1459 | break; |
| 1460 | case SOL_CMD_KILLED_DATA_DIGEST_ERR: |
| 1461 | case CMD_KILLED_INVALID_STATSN_RCVD: |
| 1462 | case CMD_KILLED_INVALID_R2T_RCVD: |
| 1463 | case CMD_CXN_KILLED_LUN_INVALID: |
| 1464 | case CMD_CXN_KILLED_ICD_INVALID: |
| 1465 | case CMD_CXN_KILLED_ITT_INVALID: |
| 1466 | case CMD_CXN_KILLED_SEQ_OUTOFORDER: |
| 1467 | case CMD_CXN_KILLED_INVALID_DATASN_RCVD: |
| 1468 | SE_DEBUG(DBG_LVL_1, |
| 1469 | "CQ Error notification for cmd.. " |
| 1470 | "code %d cid 0x%x\n", |
| 1471 | sol->dw[offsetof(struct amap_sol_cqe, code) / |
| 1472 | 32] & CQE_CODE_MASK, |
| 1473 | (sol->dw[offsetof(struct amap_sol_cqe, cid) / |
| 1474 | 32] & SOL_CID_MASK)); |
| 1475 | break; |
| 1476 | case UNSOL_DATA_DIGEST_ERROR_NOTIFY: |
| 1477 | SE_DEBUG(DBG_LVL_1, |
| 1478 | "Digest error on def pdu ring, dropping..\n"); |
| 1479 | hwi_flush_default_pdu_buffer(phba, beiscsi_conn, |
| 1480 | (struct i_t_dpdu_cqe *) sol); |
| 1481 | break; |
| 1482 | case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL: |
| 1483 | case CXN_KILLED_BURST_LEN_MISMATCH: |
| 1484 | case CXN_KILLED_AHS_RCVD: |
| 1485 | case CXN_KILLED_HDR_DIGEST_ERR: |
| 1486 | case CXN_KILLED_UNKNOWN_HDR: |
| 1487 | case CXN_KILLED_STALE_ITT_TTT_RCVD: |
| 1488 | case CXN_KILLED_INVALID_ITT_TTT_RCVD: |
| 1489 | case CXN_KILLED_TIMED_OUT: |
| 1490 | case CXN_KILLED_FIN_RCVD: |
| 1491 | case CXN_KILLED_BAD_UNSOL_PDU_RCVD: |
| 1492 | case CXN_KILLED_BAD_WRB_INDEX_ERROR: |
| 1493 | case CXN_KILLED_OVER_RUN_RESIDUAL: |
| 1494 | case CXN_KILLED_UNDER_RUN_RESIDUAL: |
| 1495 | case CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1496 | SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset CID " |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1497 | "0x%x...\n", |
| 1498 | sol->dw[offsetof(struct amap_sol_cqe, code) / |
| 1499 | 32] & CQE_CODE_MASK, |
| 1500 | sol->dw[offsetof(struct amap_sol_cqe, cid) / |
| 1501 | 32] & CQE_CID_MASK); |
| 1502 | iscsi_conn_failure(beiscsi_conn->conn, |
| 1503 | ISCSI_ERR_CONN_FAILED); |
| 1504 | break; |
| 1505 | case CXN_KILLED_RST_SENT: |
| 1506 | case CXN_KILLED_RST_RCVD: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1507 | SE_DEBUG(DBG_LVL_1, "CQ Error %d, reset" |
| 1508 | "received/sent on CID 0x%x...\n", |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1509 | sol->dw[offsetof(struct amap_sol_cqe, code) / |
| 1510 | 32] & CQE_CODE_MASK, |
| 1511 | sol->dw[offsetof(struct amap_sol_cqe, cid) / |
| 1512 | 32] & CQE_CID_MASK); |
| 1513 | iscsi_conn_failure(beiscsi_conn->conn, |
| 1514 | ISCSI_ERR_CONN_FAILED); |
| 1515 | break; |
| 1516 | default: |
| 1517 | SE_DEBUG(DBG_LVL_1, "CQ Error Invalid code= %d " |
| 1518 | "received on CID 0x%x...\n", |
| 1519 | sol->dw[offsetof(struct amap_sol_cqe, code) / |
| 1520 | 32] & CQE_CODE_MASK, |
| 1521 | sol->dw[offsetof(struct amap_sol_cqe, cid) / |
| 1522 | 32] & CQE_CID_MASK); |
| 1523 | break; |
| 1524 | } |
| 1525 | |
| 1526 | AMAP_SET_BITS(struct amap_sol_cqe, valid, sol, 0); |
| 1527 | queue_tail_inc(cq); |
| 1528 | sol = queue_tail_node(cq); |
| 1529 | num_processed++; |
| 1530 | } |
| 1531 | |
| 1532 | if (num_processed > 0) { |
| 1533 | tot_nump += num_processed; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1534 | hwi_ring_cq_db(phba, cq->id, num_processed, 1, 0); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1535 | } |
| 1536 | return tot_nump; |
| 1537 | } |
| 1538 | |
| 1539 | static void beiscsi_process_all_cqs(struct work_struct *work) |
| 1540 | { |
| 1541 | unsigned long flags; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1542 | struct hwi_controller *phwi_ctrlr; |
| 1543 | struct hwi_context_memory *phwi_context; |
| 1544 | struct be_eq_obj *pbe_eq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1545 | struct beiscsi_hba *phba = |
| 1546 | container_of(work, struct beiscsi_hba, work_cqs); |
| 1547 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1548 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1549 | phwi_context = phwi_ctrlr->phwi_ctxt; |
| 1550 | if (phba->msix_enabled) |
| 1551 | pbe_eq = &phwi_context->be_eq[phba->num_cpus]; |
| 1552 | else |
| 1553 | pbe_eq = &phwi_context->be_eq[0]; |
| 1554 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1555 | if (phba->todo_mcc_cq) { |
| 1556 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 1557 | phba->todo_mcc_cq = 0; |
| 1558 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1559 | } |
| 1560 | |
| 1561 | if (phba->todo_cq) { |
| 1562 | spin_lock_irqsave(&phba->isr_lock, flags); |
| 1563 | phba->todo_cq = 0; |
| 1564 | spin_unlock_irqrestore(&phba->isr_lock, flags); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1565 | beiscsi_process_cq(pbe_eq); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1566 | } |
| 1567 | } |
| 1568 | |
| 1569 | static int be_iopoll(struct blk_iopoll *iop, int budget) |
| 1570 | { |
| 1571 | static unsigned int ret; |
| 1572 | struct beiscsi_hba *phba; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1573 | struct be_eq_obj *pbe_eq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1574 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1575 | pbe_eq = container_of(iop, struct be_eq_obj, iopoll); |
| 1576 | ret = beiscsi_process_cq(pbe_eq); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1577 | if (ret < budget) { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1578 | phba = pbe_eq->phba; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1579 | blk_iopoll_complete(iop); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1580 | SE_DEBUG(DBG_LVL_8, "rearm pbe_eq->q.id =%d\n", pbe_eq->q.id); |
| 1581 | hwi_ring_eq_db(phba, pbe_eq->q.id, 0, 0, 1, 1); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1582 | } |
| 1583 | return ret; |
| 1584 | } |
| 1585 | |
| 1586 | static void |
| 1587 | hwi_write_sgl(struct iscsi_wrb *pwrb, struct scatterlist *sg, |
| 1588 | unsigned int num_sg, struct beiscsi_io_task *io_task) |
| 1589 | { |
| 1590 | struct iscsi_sge *psgl; |
| 1591 | unsigned short sg_len, index; |
| 1592 | unsigned int sge_len = 0; |
| 1593 | unsigned long long addr; |
| 1594 | struct scatterlist *l_sg; |
| 1595 | unsigned int offset; |
| 1596 | |
| 1597 | AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb, |
| 1598 | io_task->bhs_pa.u.a32.address_lo); |
| 1599 | AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb, |
| 1600 | io_task->bhs_pa.u.a32.address_hi); |
| 1601 | |
| 1602 | l_sg = sg; |
| 1603 | for (index = 0; (index < num_sg) && (index < 2); index++, sg_next(sg)) { |
| 1604 | if (index == 0) { |
| 1605 | sg_len = sg_dma_len(sg); |
| 1606 | addr = (u64) sg_dma_address(sg); |
| 1607 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb, |
| 1608 | (addr & 0xFFFFFFFF)); |
| 1609 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb, |
| 1610 | (addr >> 32)); |
| 1611 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb, |
| 1612 | sg_len); |
| 1613 | sge_len = sg_len; |
| 1614 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, |
| 1615 | 1); |
| 1616 | } else { |
| 1617 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, |
| 1618 | 0); |
| 1619 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_r2t_offset, |
| 1620 | pwrb, sge_len); |
| 1621 | sg_len = sg_dma_len(sg); |
| 1622 | addr = (u64) sg_dma_address(sg); |
| 1623 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_lo, pwrb, |
| 1624 | (addr & 0xFFFFFFFF)); |
| 1625 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_addr_hi, pwrb, |
| 1626 | (addr >> 32)); |
| 1627 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_len, pwrb, |
| 1628 | sg_len); |
| 1629 | } |
| 1630 | } |
| 1631 | psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; |
| 1632 | memset(psgl, 0, sizeof(*psgl) * BE2_SGE); |
| 1633 | |
| 1634 | AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len - 2); |
| 1635 | |
| 1636 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, |
| 1637 | io_task->bhs_pa.u.a32.address_hi); |
| 1638 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, |
| 1639 | io_task->bhs_pa.u.a32.address_lo); |
| 1640 | |
| 1641 | if (num_sg == 2) |
| 1642 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge1_last, pwrb, 1); |
| 1643 | sg = l_sg; |
| 1644 | psgl++; |
| 1645 | psgl++; |
| 1646 | offset = 0; |
| 1647 | for (index = 0; index < num_sg; index++, sg_next(sg), psgl++) { |
| 1648 | sg_len = sg_dma_len(sg); |
| 1649 | addr = (u64) sg_dma_address(sg); |
| 1650 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, |
| 1651 | (addr & 0xFFFFFFFF)); |
| 1652 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, |
| 1653 | (addr >> 32)); |
| 1654 | AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, sg_len); |
| 1655 | AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, offset); |
| 1656 | AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); |
| 1657 | offset += sg_len; |
| 1658 | } |
| 1659 | psgl--; |
| 1660 | AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); |
| 1661 | } |
| 1662 | |
| 1663 | static void hwi_write_buffer(struct iscsi_wrb *pwrb, struct iscsi_task *task) |
| 1664 | { |
| 1665 | struct iscsi_sge *psgl; |
| 1666 | unsigned long long addr; |
| 1667 | struct beiscsi_io_task *io_task = task->dd_data; |
| 1668 | struct beiscsi_conn *beiscsi_conn = io_task->conn; |
| 1669 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
| 1670 | |
| 1671 | io_task->bhs_len = sizeof(struct be_nonio_bhs) - 2; |
| 1672 | AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_lo, pwrb, |
| 1673 | io_task->bhs_pa.u.a32.address_lo); |
| 1674 | AMAP_SET_BITS(struct amap_iscsi_wrb, iscsi_bhs_addr_hi, pwrb, |
| 1675 | io_task->bhs_pa.u.a32.address_hi); |
| 1676 | |
| 1677 | if (task->data) { |
| 1678 | if (task->data_count) { |
| 1679 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1); |
| 1680 | addr = (u64) pci_map_single(phba->pcidev, |
| 1681 | task->data, |
| 1682 | task->data_count, 1); |
| 1683 | } else { |
| 1684 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); |
| 1685 | addr = 0; |
| 1686 | } |
| 1687 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_lo, pwrb, |
| 1688 | (addr & 0xFFFFFFFF)); |
| 1689 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_addr_hi, pwrb, |
| 1690 | (addr >> 32)); |
| 1691 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_len, pwrb, |
| 1692 | task->data_count); |
| 1693 | |
| 1694 | AMAP_SET_BITS(struct amap_iscsi_wrb, sge0_last, pwrb, 1); |
| 1695 | } else { |
| 1696 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); |
| 1697 | addr = 0; |
| 1698 | } |
| 1699 | |
| 1700 | psgl = (struct iscsi_sge *)io_task->psgl_handle->pfrag; |
| 1701 | |
| 1702 | AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, io_task->bhs_len); |
| 1703 | |
| 1704 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, |
| 1705 | io_task->bhs_pa.u.a32.address_hi); |
| 1706 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, |
| 1707 | io_task->bhs_pa.u.a32.address_lo); |
| 1708 | if (task->data) { |
| 1709 | psgl++; |
| 1710 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, 0); |
| 1711 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, 0); |
| 1712 | AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0); |
| 1713 | AMAP_SET_BITS(struct amap_iscsi_sge, sge_offset, psgl, 0); |
| 1714 | AMAP_SET_BITS(struct amap_iscsi_sge, rsvd0, psgl, 0); |
| 1715 | AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 0); |
| 1716 | |
| 1717 | psgl++; |
| 1718 | if (task->data) { |
| 1719 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, psgl, |
| 1720 | (addr & 0xFFFFFFFF)); |
| 1721 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, psgl, |
| 1722 | (addr >> 32)); |
| 1723 | } |
| 1724 | AMAP_SET_BITS(struct amap_iscsi_sge, len, psgl, 0x106); |
| 1725 | } |
| 1726 | AMAP_SET_BITS(struct amap_iscsi_sge, last_sge, psgl, 1); |
| 1727 | } |
| 1728 | |
| 1729 | static void beiscsi_find_mem_req(struct beiscsi_hba *phba) |
| 1730 | { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1731 | unsigned int num_cq_pages, num_async_pdu_buf_pages; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1732 | unsigned int num_async_pdu_data_pages, wrb_sz_per_cxn; |
| 1733 | unsigned int num_async_pdu_buf_sgl_pages, num_async_pdu_data_sgl_pages; |
| 1734 | |
| 1735 | num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \ |
| 1736 | sizeof(struct sol_cqe)); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1737 | num_async_pdu_buf_pages = |
| 1738 | PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \ |
| 1739 | phba->params.defpdu_hdr_sz); |
| 1740 | num_async_pdu_buf_sgl_pages = |
| 1741 | PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \ |
| 1742 | sizeof(struct phys_addr)); |
| 1743 | num_async_pdu_data_pages = |
| 1744 | PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \ |
| 1745 | phba->params.defpdu_data_sz); |
| 1746 | num_async_pdu_data_sgl_pages = |
| 1747 | PAGES_REQUIRED(phba->params.asyncpdus_per_ctrl * \ |
| 1748 | sizeof(struct phys_addr)); |
| 1749 | |
| 1750 | phba->params.hwi_ws_sz = sizeof(struct hwi_controller); |
| 1751 | |
| 1752 | phba->mem_req[ISCSI_MEM_GLOBAL_HEADER] = 2 * |
| 1753 | BE_ISCSI_PDU_HEADER_SIZE; |
| 1754 | phba->mem_req[HWI_MEM_ADDN_CONTEXT] = |
| 1755 | sizeof(struct hwi_context_memory); |
| 1756 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1757 | |
| 1758 | phba->mem_req[HWI_MEM_WRB] = sizeof(struct iscsi_wrb) |
| 1759 | * (phba->params.wrbs_per_cxn) |
| 1760 | * phba->params.cxns_per_ctrl; |
| 1761 | wrb_sz_per_cxn = sizeof(struct wrb_handle) * |
| 1762 | (phba->params.wrbs_per_cxn); |
| 1763 | phba->mem_req[HWI_MEM_WRBH] = roundup_pow_of_two((wrb_sz_per_cxn) * |
| 1764 | phba->params.cxns_per_ctrl); |
| 1765 | |
| 1766 | phba->mem_req[HWI_MEM_SGLH] = sizeof(struct sgl_handle) * |
| 1767 | phba->params.icds_per_ctrl; |
| 1768 | phba->mem_req[HWI_MEM_SGE] = sizeof(struct iscsi_sge) * |
| 1769 | phba->params.num_sge_per_io * phba->params.icds_per_ctrl; |
| 1770 | |
| 1771 | phba->mem_req[HWI_MEM_ASYNC_HEADER_BUF] = |
| 1772 | num_async_pdu_buf_pages * PAGE_SIZE; |
| 1773 | phba->mem_req[HWI_MEM_ASYNC_DATA_BUF] = |
| 1774 | num_async_pdu_data_pages * PAGE_SIZE; |
| 1775 | phba->mem_req[HWI_MEM_ASYNC_HEADER_RING] = |
| 1776 | num_async_pdu_buf_sgl_pages * PAGE_SIZE; |
| 1777 | phba->mem_req[HWI_MEM_ASYNC_DATA_RING] = |
| 1778 | num_async_pdu_data_sgl_pages * PAGE_SIZE; |
| 1779 | phba->mem_req[HWI_MEM_ASYNC_HEADER_HANDLE] = |
| 1780 | phba->params.asyncpdus_per_ctrl * |
| 1781 | sizeof(struct async_pdu_handle); |
| 1782 | phba->mem_req[HWI_MEM_ASYNC_DATA_HANDLE] = |
| 1783 | phba->params.asyncpdus_per_ctrl * |
| 1784 | sizeof(struct async_pdu_handle); |
| 1785 | phba->mem_req[HWI_MEM_ASYNC_PDU_CONTEXT] = |
| 1786 | sizeof(struct hwi_async_pdu_context) + |
| 1787 | (phba->params.cxns_per_ctrl * sizeof(struct hwi_async_entry)); |
| 1788 | } |
| 1789 | |
| 1790 | static int beiscsi_alloc_mem(struct beiscsi_hba *phba) |
| 1791 | { |
| 1792 | struct be_mem_descriptor *mem_descr; |
| 1793 | dma_addr_t bus_add; |
| 1794 | struct mem_array *mem_arr, *mem_arr_orig; |
| 1795 | unsigned int i, j, alloc_size, curr_alloc_size; |
| 1796 | |
| 1797 | phba->phwi_ctrlr = kmalloc(phba->params.hwi_ws_sz, GFP_KERNEL); |
| 1798 | if (!phba->phwi_ctrlr) |
| 1799 | return -ENOMEM; |
| 1800 | |
| 1801 | phba->init_mem = kcalloc(SE_MEM_MAX, sizeof(*mem_descr), |
| 1802 | GFP_KERNEL); |
| 1803 | if (!phba->init_mem) { |
| 1804 | kfree(phba->phwi_ctrlr); |
| 1805 | return -ENOMEM; |
| 1806 | } |
| 1807 | |
| 1808 | mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT, |
| 1809 | GFP_KERNEL); |
| 1810 | if (!mem_arr_orig) { |
| 1811 | kfree(phba->init_mem); |
| 1812 | kfree(phba->phwi_ctrlr); |
| 1813 | return -ENOMEM; |
| 1814 | } |
| 1815 | |
| 1816 | mem_descr = phba->init_mem; |
| 1817 | for (i = 0; i < SE_MEM_MAX; i++) { |
| 1818 | j = 0; |
| 1819 | mem_arr = mem_arr_orig; |
| 1820 | alloc_size = phba->mem_req[i]; |
| 1821 | memset(mem_arr, 0, sizeof(struct mem_array) * |
| 1822 | BEISCSI_MAX_FRAGS_INIT); |
| 1823 | curr_alloc_size = min(be_max_phys_size * 1024, alloc_size); |
| 1824 | do { |
| 1825 | mem_arr->virtual_address = pci_alloc_consistent( |
| 1826 | phba->pcidev, |
| 1827 | curr_alloc_size, |
| 1828 | &bus_add); |
| 1829 | if (!mem_arr->virtual_address) { |
| 1830 | if (curr_alloc_size <= BE_MIN_MEM_SIZE) |
| 1831 | goto free_mem; |
| 1832 | if (curr_alloc_size - |
| 1833 | rounddown_pow_of_two(curr_alloc_size)) |
| 1834 | curr_alloc_size = rounddown_pow_of_two |
| 1835 | (curr_alloc_size); |
| 1836 | else |
| 1837 | curr_alloc_size = curr_alloc_size / 2; |
| 1838 | } else { |
| 1839 | mem_arr->bus_address.u. |
| 1840 | a64.address = (__u64) bus_add; |
| 1841 | mem_arr->size = curr_alloc_size; |
| 1842 | alloc_size -= curr_alloc_size; |
| 1843 | curr_alloc_size = min(be_max_phys_size * |
| 1844 | 1024, alloc_size); |
| 1845 | j++; |
| 1846 | mem_arr++; |
| 1847 | } |
| 1848 | } while (alloc_size); |
| 1849 | mem_descr->num_elements = j; |
| 1850 | mem_descr->size_in_bytes = phba->mem_req[i]; |
| 1851 | mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j, |
| 1852 | GFP_KERNEL); |
| 1853 | if (!mem_descr->mem_array) |
| 1854 | goto free_mem; |
| 1855 | |
| 1856 | memcpy(mem_descr->mem_array, mem_arr_orig, |
| 1857 | sizeof(struct mem_array) * j); |
| 1858 | mem_descr++; |
| 1859 | } |
| 1860 | kfree(mem_arr_orig); |
| 1861 | return 0; |
| 1862 | free_mem: |
| 1863 | mem_descr->num_elements = j; |
| 1864 | while ((i) || (j)) { |
| 1865 | for (j = mem_descr->num_elements; j > 0; j--) { |
| 1866 | pci_free_consistent(phba->pcidev, |
| 1867 | mem_descr->mem_array[j - 1].size, |
| 1868 | mem_descr->mem_array[j - 1]. |
| 1869 | virtual_address, |
| 1870 | mem_descr->mem_array[j - 1]. |
| 1871 | bus_address.u.a64.address); |
| 1872 | } |
| 1873 | if (i) { |
| 1874 | i--; |
| 1875 | kfree(mem_descr->mem_array); |
| 1876 | mem_descr--; |
| 1877 | } |
| 1878 | } |
| 1879 | kfree(mem_arr_orig); |
| 1880 | kfree(phba->init_mem); |
| 1881 | kfree(phba->phwi_ctrlr); |
| 1882 | return -ENOMEM; |
| 1883 | } |
| 1884 | |
| 1885 | static int beiscsi_get_memory(struct beiscsi_hba *phba) |
| 1886 | { |
| 1887 | beiscsi_find_mem_req(phba); |
| 1888 | return beiscsi_alloc_mem(phba); |
| 1889 | } |
| 1890 | |
| 1891 | static void iscsi_init_global_templates(struct beiscsi_hba *phba) |
| 1892 | { |
| 1893 | struct pdu_data_out *pdata_out; |
| 1894 | struct pdu_nop_out *pnop_out; |
| 1895 | struct be_mem_descriptor *mem_descr; |
| 1896 | |
| 1897 | mem_descr = phba->init_mem; |
| 1898 | mem_descr += ISCSI_MEM_GLOBAL_HEADER; |
| 1899 | pdata_out = |
| 1900 | (struct pdu_data_out *)mem_descr->mem_array[0].virtual_address; |
| 1901 | memset(pdata_out, 0, BE_ISCSI_PDU_HEADER_SIZE); |
| 1902 | |
| 1903 | AMAP_SET_BITS(struct amap_pdu_data_out, opcode, pdata_out, |
| 1904 | IIOC_SCSI_DATA); |
| 1905 | |
| 1906 | pnop_out = |
| 1907 | (struct pdu_nop_out *)((unsigned char *)mem_descr->mem_array[0]. |
| 1908 | virtual_address + BE_ISCSI_PDU_HEADER_SIZE); |
| 1909 | |
| 1910 | memset(pnop_out, 0, BE_ISCSI_PDU_HEADER_SIZE); |
| 1911 | AMAP_SET_BITS(struct amap_pdu_nop_out, ttt, pnop_out, 0xFFFFFFFF); |
| 1912 | AMAP_SET_BITS(struct amap_pdu_nop_out, f_bit, pnop_out, 1); |
| 1913 | AMAP_SET_BITS(struct amap_pdu_nop_out, i_bit, pnop_out, 0); |
| 1914 | } |
| 1915 | |
| 1916 | static void beiscsi_init_wrb_handle(struct beiscsi_hba *phba) |
| 1917 | { |
| 1918 | struct be_mem_descriptor *mem_descr_wrbh, *mem_descr_wrb; |
| 1919 | struct wrb_handle *pwrb_handle; |
| 1920 | struct hwi_controller *phwi_ctrlr; |
| 1921 | struct hwi_wrb_context *pwrb_context; |
| 1922 | struct iscsi_wrb *pwrb; |
| 1923 | unsigned int num_cxn_wrbh; |
| 1924 | unsigned int num_cxn_wrb, j, idx, index; |
| 1925 | |
| 1926 | mem_descr_wrbh = phba->init_mem; |
| 1927 | mem_descr_wrbh += HWI_MEM_WRBH; |
| 1928 | |
| 1929 | mem_descr_wrb = phba->init_mem; |
| 1930 | mem_descr_wrb += HWI_MEM_WRB; |
| 1931 | |
| 1932 | idx = 0; |
| 1933 | pwrb_handle = mem_descr_wrbh->mem_array[idx].virtual_address; |
| 1934 | num_cxn_wrbh = ((mem_descr_wrbh->mem_array[idx].size) / |
| 1935 | ((sizeof(struct wrb_handle)) * |
| 1936 | phba->params.wrbs_per_cxn)); |
| 1937 | phwi_ctrlr = phba->phwi_ctrlr; |
| 1938 | |
| 1939 | for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) { |
| 1940 | pwrb_context = &phwi_ctrlr->wrb_context[index]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1941 | pwrb_context->pwrb_handle_base = |
| 1942 | kzalloc(sizeof(struct wrb_handle *) * |
| 1943 | phba->params.wrbs_per_cxn, GFP_KERNEL); |
| 1944 | pwrb_context->pwrb_handle_basestd = |
| 1945 | kzalloc(sizeof(struct wrb_handle *) * |
| 1946 | phba->params.wrbs_per_cxn, GFP_KERNEL); |
| 1947 | if (num_cxn_wrbh) { |
| 1948 | pwrb_context->alloc_index = 0; |
| 1949 | pwrb_context->wrb_handles_available = 0; |
| 1950 | for (j = 0; j < phba->params.wrbs_per_cxn; j++) { |
| 1951 | pwrb_context->pwrb_handle_base[j] = pwrb_handle; |
| 1952 | pwrb_context->pwrb_handle_basestd[j] = |
| 1953 | pwrb_handle; |
| 1954 | pwrb_context->wrb_handles_available++; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1955 | pwrb_handle->wrb_index = j; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1956 | pwrb_handle++; |
| 1957 | } |
| 1958 | pwrb_context->free_index = 0; |
| 1959 | num_cxn_wrbh--; |
| 1960 | } else { |
| 1961 | idx++; |
| 1962 | pwrb_handle = |
| 1963 | mem_descr_wrbh->mem_array[idx].virtual_address; |
| 1964 | num_cxn_wrbh = |
| 1965 | ((mem_descr_wrbh->mem_array[idx].size) / |
| 1966 | ((sizeof(struct wrb_handle)) * |
| 1967 | phba->params.wrbs_per_cxn)); |
| 1968 | pwrb_context->alloc_index = 0; |
| 1969 | for (j = 0; j < phba->params.wrbs_per_cxn; j++) { |
| 1970 | pwrb_context->pwrb_handle_base[j] = pwrb_handle; |
| 1971 | pwrb_context->pwrb_handle_basestd[j] = |
| 1972 | pwrb_handle; |
| 1973 | pwrb_context->wrb_handles_available++; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 1974 | pwrb_handle->wrb_index = j; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 1975 | pwrb_handle++; |
| 1976 | } |
| 1977 | pwrb_context->free_index = 0; |
| 1978 | num_cxn_wrbh--; |
| 1979 | } |
| 1980 | } |
| 1981 | idx = 0; |
| 1982 | pwrb = mem_descr_wrb->mem_array[idx].virtual_address; |
| 1983 | num_cxn_wrb = |
| 1984 | ((mem_descr_wrb->mem_array[idx].size) / (sizeof(struct iscsi_wrb)) * |
| 1985 | phba->params.wrbs_per_cxn); |
| 1986 | |
| 1987 | for (index = 0; index < phba->params.cxns_per_ctrl; index += 2) { |
| 1988 | pwrb_context = &phwi_ctrlr->wrb_context[index]; |
| 1989 | if (num_cxn_wrb) { |
| 1990 | for (j = 0; j < phba->params.wrbs_per_cxn; j++) { |
| 1991 | pwrb_handle = pwrb_context->pwrb_handle_base[j]; |
| 1992 | pwrb_handle->pwrb = pwrb; |
| 1993 | pwrb++; |
| 1994 | } |
| 1995 | num_cxn_wrb--; |
| 1996 | } else { |
| 1997 | idx++; |
| 1998 | pwrb = mem_descr_wrb->mem_array[idx].virtual_address; |
| 1999 | num_cxn_wrb = ((mem_descr_wrb->mem_array[idx].size) / |
| 2000 | (sizeof(struct iscsi_wrb)) * |
| 2001 | phba->params.wrbs_per_cxn); |
| 2002 | for (j = 0; j < phba->params.wrbs_per_cxn; j++) { |
| 2003 | pwrb_handle = pwrb_context->pwrb_handle_base[j]; |
| 2004 | pwrb_handle->pwrb = pwrb; |
| 2005 | pwrb++; |
| 2006 | } |
| 2007 | num_cxn_wrb--; |
| 2008 | } |
| 2009 | } |
| 2010 | } |
| 2011 | |
| 2012 | static void hwi_init_async_pdu_ctx(struct beiscsi_hba *phba) |
| 2013 | { |
| 2014 | struct hwi_controller *phwi_ctrlr; |
| 2015 | struct hba_parameters *p = &phba->params; |
| 2016 | struct hwi_async_pdu_context *pasync_ctx; |
| 2017 | struct async_pdu_handle *pasync_header_h, *pasync_data_h; |
| 2018 | unsigned int index; |
| 2019 | struct be_mem_descriptor *mem_descr; |
| 2020 | |
| 2021 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2022 | mem_descr += HWI_MEM_ASYNC_PDU_CONTEXT; |
| 2023 | |
| 2024 | phwi_ctrlr = phba->phwi_ctrlr; |
| 2025 | phwi_ctrlr->phwi_ctxt->pasync_ctx = (struct hwi_async_pdu_context *) |
| 2026 | mem_descr->mem_array[0].virtual_address; |
| 2027 | pasync_ctx = phwi_ctrlr->phwi_ctxt->pasync_ctx; |
| 2028 | memset(pasync_ctx, 0, sizeof(*pasync_ctx)); |
| 2029 | |
| 2030 | pasync_ctx->async_header.num_entries = p->asyncpdus_per_ctrl; |
| 2031 | pasync_ctx->async_header.buffer_size = p->defpdu_hdr_sz; |
| 2032 | pasync_ctx->async_data.buffer_size = p->defpdu_data_sz; |
| 2033 | pasync_ctx->async_data.num_entries = p->asyncpdus_per_ctrl; |
| 2034 | |
| 2035 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2036 | mem_descr += HWI_MEM_ASYNC_HEADER_BUF; |
| 2037 | if (mem_descr->mem_array[0].virtual_address) { |
| 2038 | SE_DEBUG(DBG_LVL_8, |
| 2039 | "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_BUF" |
| 2040 | "va=%p \n", mem_descr->mem_array[0].virtual_address); |
| 2041 | } else |
| 2042 | shost_printk(KERN_WARNING, phba->shost, |
| 2043 | "No Virtual address \n"); |
| 2044 | |
| 2045 | pasync_ctx->async_header.va_base = |
| 2046 | mem_descr->mem_array[0].virtual_address; |
| 2047 | |
| 2048 | pasync_ctx->async_header.pa_base.u.a64.address = |
| 2049 | mem_descr->mem_array[0].bus_address.u.a64.address; |
| 2050 | |
| 2051 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2052 | mem_descr += HWI_MEM_ASYNC_HEADER_RING; |
| 2053 | if (mem_descr->mem_array[0].virtual_address) { |
| 2054 | SE_DEBUG(DBG_LVL_8, |
| 2055 | "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_RING" |
| 2056 | "va=%p \n", mem_descr->mem_array[0].virtual_address); |
| 2057 | } else |
| 2058 | shost_printk(KERN_WARNING, phba->shost, |
| 2059 | "No Virtual address \n"); |
| 2060 | pasync_ctx->async_header.ring_base = |
| 2061 | mem_descr->mem_array[0].virtual_address; |
| 2062 | |
| 2063 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2064 | mem_descr += HWI_MEM_ASYNC_HEADER_HANDLE; |
| 2065 | if (mem_descr->mem_array[0].virtual_address) { |
| 2066 | SE_DEBUG(DBG_LVL_8, |
| 2067 | "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_HEADER_HANDLE" |
| 2068 | "va=%p \n", mem_descr->mem_array[0].virtual_address); |
| 2069 | } else |
| 2070 | shost_printk(KERN_WARNING, phba->shost, |
| 2071 | "No Virtual address \n"); |
| 2072 | |
| 2073 | pasync_ctx->async_header.handle_base = |
| 2074 | mem_descr->mem_array[0].virtual_address; |
| 2075 | pasync_ctx->async_header.writables = 0; |
| 2076 | INIT_LIST_HEAD(&pasync_ctx->async_header.free_list); |
| 2077 | |
| 2078 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2079 | mem_descr += HWI_MEM_ASYNC_DATA_BUF; |
| 2080 | if (mem_descr->mem_array[0].virtual_address) { |
| 2081 | SE_DEBUG(DBG_LVL_8, |
| 2082 | "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_BUF" |
| 2083 | "va=%p \n", mem_descr->mem_array[0].virtual_address); |
| 2084 | } else |
| 2085 | shost_printk(KERN_WARNING, phba->shost, |
| 2086 | "No Virtual address \n"); |
| 2087 | pasync_ctx->async_data.va_base = |
| 2088 | mem_descr->mem_array[0].virtual_address; |
| 2089 | pasync_ctx->async_data.pa_base.u.a64.address = |
| 2090 | mem_descr->mem_array[0].bus_address.u.a64.address; |
| 2091 | |
| 2092 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2093 | mem_descr += HWI_MEM_ASYNC_DATA_RING; |
| 2094 | if (mem_descr->mem_array[0].virtual_address) { |
| 2095 | SE_DEBUG(DBG_LVL_8, |
| 2096 | "hwi_init_async_pdu_ctx HWI_MEM_ASYNC_DATA_RING" |
| 2097 | "va=%p \n", mem_descr->mem_array[0].virtual_address); |
| 2098 | } else |
| 2099 | shost_printk(KERN_WARNING, phba->shost, |
| 2100 | "No Virtual address \n"); |
| 2101 | |
| 2102 | pasync_ctx->async_data.ring_base = |
| 2103 | mem_descr->mem_array[0].virtual_address; |
| 2104 | |
| 2105 | mem_descr = (struct be_mem_descriptor *)phba->init_mem; |
| 2106 | mem_descr += HWI_MEM_ASYNC_DATA_HANDLE; |
| 2107 | if (!mem_descr->mem_array[0].virtual_address) |
| 2108 | shost_printk(KERN_WARNING, phba->shost, |
| 2109 | "No Virtual address \n"); |
| 2110 | |
| 2111 | pasync_ctx->async_data.handle_base = |
| 2112 | mem_descr->mem_array[0].virtual_address; |
| 2113 | pasync_ctx->async_data.writables = 0; |
| 2114 | INIT_LIST_HEAD(&pasync_ctx->async_data.free_list); |
| 2115 | |
| 2116 | pasync_header_h = |
| 2117 | (struct async_pdu_handle *)pasync_ctx->async_header.handle_base; |
| 2118 | pasync_data_h = |
| 2119 | (struct async_pdu_handle *)pasync_ctx->async_data.handle_base; |
| 2120 | |
| 2121 | for (index = 0; index < p->asyncpdus_per_ctrl; index++) { |
| 2122 | pasync_header_h->cri = -1; |
| 2123 | pasync_header_h->index = (char)index; |
| 2124 | INIT_LIST_HEAD(&pasync_header_h->link); |
| 2125 | pasync_header_h->pbuffer = |
| 2126 | (void *)((unsigned long) |
| 2127 | (pasync_ctx->async_header.va_base) + |
| 2128 | (p->defpdu_hdr_sz * index)); |
| 2129 | |
| 2130 | pasync_header_h->pa.u.a64.address = |
| 2131 | pasync_ctx->async_header.pa_base.u.a64.address + |
| 2132 | (p->defpdu_hdr_sz * index); |
| 2133 | |
| 2134 | list_add_tail(&pasync_header_h->link, |
| 2135 | &pasync_ctx->async_header.free_list); |
| 2136 | pasync_header_h++; |
| 2137 | pasync_ctx->async_header.free_entries++; |
| 2138 | pasync_ctx->async_header.writables++; |
| 2139 | |
| 2140 | INIT_LIST_HEAD(&pasync_ctx->async_entry[index].wait_queue.list); |
| 2141 | INIT_LIST_HEAD(&pasync_ctx->async_entry[index]. |
| 2142 | header_busy_list); |
| 2143 | pasync_data_h->cri = -1; |
| 2144 | pasync_data_h->index = (char)index; |
| 2145 | INIT_LIST_HEAD(&pasync_data_h->link); |
| 2146 | pasync_data_h->pbuffer = |
| 2147 | (void *)((unsigned long) |
| 2148 | (pasync_ctx->async_data.va_base) + |
| 2149 | (p->defpdu_data_sz * index)); |
| 2150 | |
| 2151 | pasync_data_h->pa.u.a64.address = |
| 2152 | pasync_ctx->async_data.pa_base.u.a64.address + |
| 2153 | (p->defpdu_data_sz * index); |
| 2154 | |
| 2155 | list_add_tail(&pasync_data_h->link, |
| 2156 | &pasync_ctx->async_data.free_list); |
| 2157 | pasync_data_h++; |
| 2158 | pasync_ctx->async_data.free_entries++; |
| 2159 | pasync_ctx->async_data.writables++; |
| 2160 | |
| 2161 | INIT_LIST_HEAD(&pasync_ctx->async_entry[index].data_busy_list); |
| 2162 | } |
| 2163 | |
| 2164 | pasync_ctx->async_header.host_write_ptr = 0; |
| 2165 | pasync_ctx->async_header.ep_read_ptr = -1; |
| 2166 | pasync_ctx->async_data.host_write_ptr = 0; |
| 2167 | pasync_ctx->async_data.ep_read_ptr = -1; |
| 2168 | } |
| 2169 | |
| 2170 | static int |
| 2171 | be_sgl_create_contiguous(void *virtual_address, |
| 2172 | u64 physical_address, u32 length, |
| 2173 | struct be_dma_mem *sgl) |
| 2174 | { |
| 2175 | WARN_ON(!virtual_address); |
| 2176 | WARN_ON(!physical_address); |
| 2177 | WARN_ON(!length > 0); |
| 2178 | WARN_ON(!sgl); |
| 2179 | |
| 2180 | sgl->va = virtual_address; |
| 2181 | sgl->dma = physical_address; |
| 2182 | sgl->size = length; |
| 2183 | |
| 2184 | return 0; |
| 2185 | } |
| 2186 | |
| 2187 | static void be_sgl_destroy_contiguous(struct be_dma_mem *sgl) |
| 2188 | { |
| 2189 | memset(sgl, 0, sizeof(*sgl)); |
| 2190 | } |
| 2191 | |
| 2192 | static void |
| 2193 | hwi_build_be_sgl_arr(struct beiscsi_hba *phba, |
| 2194 | struct mem_array *pmem, struct be_dma_mem *sgl) |
| 2195 | { |
| 2196 | if (sgl->va) |
| 2197 | be_sgl_destroy_contiguous(sgl); |
| 2198 | |
| 2199 | be_sgl_create_contiguous(pmem->virtual_address, |
| 2200 | pmem->bus_address.u.a64.address, |
| 2201 | pmem->size, sgl); |
| 2202 | } |
| 2203 | |
| 2204 | static void |
| 2205 | hwi_build_be_sgl_by_offset(struct beiscsi_hba *phba, |
| 2206 | struct mem_array *pmem, struct be_dma_mem *sgl) |
| 2207 | { |
| 2208 | if (sgl->va) |
| 2209 | be_sgl_destroy_contiguous(sgl); |
| 2210 | |
| 2211 | be_sgl_create_contiguous((unsigned char *)pmem->virtual_address, |
| 2212 | pmem->bus_address.u.a64.address, |
| 2213 | pmem->size, sgl); |
| 2214 | } |
| 2215 | |
| 2216 | static int be_fill_queue(struct be_queue_info *q, |
| 2217 | u16 len, u16 entry_size, void *vaddress) |
| 2218 | { |
| 2219 | struct be_dma_mem *mem = &q->dma_mem; |
| 2220 | |
| 2221 | memset(q, 0, sizeof(*q)); |
| 2222 | q->len = len; |
| 2223 | q->entry_size = entry_size; |
| 2224 | mem->size = len * entry_size; |
| 2225 | mem->va = vaddress; |
| 2226 | if (!mem->va) |
| 2227 | return -ENOMEM; |
| 2228 | memset(mem->va, 0, mem->size); |
| 2229 | return 0; |
| 2230 | } |
| 2231 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2232 | static int beiscsi_create_eqs(struct beiscsi_hba *phba, |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2233 | struct hwi_context_memory *phwi_context) |
| 2234 | { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2235 | unsigned int i, num_eq_pages; |
| 2236 | int ret, eq_for_mcc; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2237 | struct be_queue_info *eq; |
| 2238 | struct be_dma_mem *mem; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2239 | void *eq_vaddress; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2240 | dma_addr_t paddr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2241 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2242 | num_eq_pages = PAGES_REQUIRED(phba->params.num_eq_entries * \ |
| 2243 | sizeof(struct be_eq_entry)); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2244 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2245 | if (phba->msix_enabled) |
| 2246 | eq_for_mcc = 1; |
| 2247 | else |
| 2248 | eq_for_mcc = 0; |
| 2249 | for (i = 0; i < (phba->num_cpus + eq_for_mcc); i++) { |
| 2250 | eq = &phwi_context->be_eq[i].q; |
| 2251 | mem = &eq->dma_mem; |
| 2252 | phwi_context->be_eq[i].phba = phba; |
| 2253 | eq_vaddress = pci_alloc_consistent(phba->pcidev, |
| 2254 | num_eq_pages * PAGE_SIZE, |
| 2255 | &paddr); |
| 2256 | if (!eq_vaddress) |
| 2257 | goto create_eq_error; |
| 2258 | |
| 2259 | mem->va = eq_vaddress; |
| 2260 | ret = be_fill_queue(eq, phba->params.num_eq_entries, |
| 2261 | sizeof(struct be_eq_entry), eq_vaddress); |
| 2262 | if (ret) { |
| 2263 | shost_printk(KERN_ERR, phba->shost, |
| 2264 | "be_fill_queue Failed for EQ \n"); |
| 2265 | goto create_eq_error; |
| 2266 | } |
| 2267 | |
| 2268 | mem->dma = paddr; |
| 2269 | ret = beiscsi_cmd_eq_create(&phba->ctrl, eq, |
| 2270 | phwi_context->cur_eqd); |
| 2271 | if (ret) { |
| 2272 | shost_printk(KERN_ERR, phba->shost, |
| 2273 | "beiscsi_cmd_eq_create" |
| 2274 | "Failedfor EQ \n"); |
| 2275 | goto create_eq_error; |
| 2276 | } |
| 2277 | SE_DEBUG(DBG_LVL_8, "eqid = %d\n", phwi_context->be_eq[i].q.id); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2278 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2279 | return 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2280 | create_eq_error: |
| 2281 | for (i = 0; i < (phba->num_cpus + 1); i++) { |
| 2282 | eq = &phwi_context->be_eq[i].q; |
| 2283 | mem = &eq->dma_mem; |
| 2284 | if (mem->va) |
| 2285 | pci_free_consistent(phba->pcidev, num_eq_pages |
| 2286 | * PAGE_SIZE, |
| 2287 | mem->va, mem->dma); |
| 2288 | } |
| 2289 | return ret; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2290 | } |
| 2291 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2292 | static int beiscsi_create_cqs(struct beiscsi_hba *phba, |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2293 | struct hwi_context_memory *phwi_context) |
| 2294 | { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2295 | unsigned int i, num_cq_pages; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2296 | int ret; |
| 2297 | struct be_queue_info *cq, *eq; |
| 2298 | struct be_dma_mem *mem; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2299 | struct be_eq_obj *pbe_eq; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2300 | void *cq_vaddress; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2301 | dma_addr_t paddr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2302 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2303 | num_cq_pages = PAGES_REQUIRED(phba->params.num_cq_entries * \ |
| 2304 | sizeof(struct sol_cqe)); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2305 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2306 | for (i = 0; i < phba->num_cpus; i++) { |
| 2307 | cq = &phwi_context->be_cq[i]; |
| 2308 | eq = &phwi_context->be_eq[i].q; |
| 2309 | pbe_eq = &phwi_context->be_eq[i]; |
| 2310 | pbe_eq->cq = cq; |
| 2311 | pbe_eq->phba = phba; |
| 2312 | mem = &cq->dma_mem; |
| 2313 | cq_vaddress = pci_alloc_consistent(phba->pcidev, |
| 2314 | num_cq_pages * PAGE_SIZE, |
| 2315 | &paddr); |
| 2316 | if (!cq_vaddress) |
| 2317 | goto create_cq_error; |
| 2318 | ret = be_fill_queue(cq, phba->params.icds_per_ctrl / 2, |
| 2319 | sizeof(struct sol_cqe), cq_vaddress); |
| 2320 | if (ret) { |
| 2321 | shost_printk(KERN_ERR, phba->shost, |
| 2322 | "be_fill_queue Failed for ISCSI CQ \n"); |
| 2323 | goto create_cq_error; |
| 2324 | } |
| 2325 | |
| 2326 | mem->dma = paddr; |
| 2327 | ret = beiscsi_cmd_cq_create(&phba->ctrl, cq, eq, false, |
| 2328 | false, 0); |
| 2329 | if (ret) { |
| 2330 | shost_printk(KERN_ERR, phba->shost, |
| 2331 | "beiscsi_cmd_eq_create" |
| 2332 | "Failed for ISCSI CQ \n"); |
| 2333 | goto create_cq_error; |
| 2334 | } |
| 2335 | SE_DEBUG(DBG_LVL_8, "iscsi cq_id is %d for eq_id %d\n", |
| 2336 | cq->id, eq->id); |
| 2337 | SE_DEBUG(DBG_LVL_8, "ISCSI CQ CREATED\n"); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2338 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2339 | return 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2340 | |
| 2341 | create_cq_error: |
| 2342 | for (i = 0; i < phba->num_cpus; i++) { |
| 2343 | cq = &phwi_context->be_cq[i]; |
| 2344 | mem = &cq->dma_mem; |
| 2345 | if (mem->va) |
| 2346 | pci_free_consistent(phba->pcidev, num_cq_pages |
| 2347 | * PAGE_SIZE, |
| 2348 | mem->va, mem->dma); |
| 2349 | } |
| 2350 | return ret; |
| 2351 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2352 | } |
| 2353 | |
| 2354 | static int |
| 2355 | beiscsi_create_def_hdr(struct beiscsi_hba *phba, |
| 2356 | struct hwi_context_memory *phwi_context, |
| 2357 | struct hwi_controller *phwi_ctrlr, |
| 2358 | unsigned int def_pdu_ring_sz) |
| 2359 | { |
| 2360 | unsigned int idx; |
| 2361 | int ret; |
| 2362 | struct be_queue_info *dq, *cq; |
| 2363 | struct be_dma_mem *mem; |
| 2364 | struct be_mem_descriptor *mem_descr; |
| 2365 | void *dq_vaddress; |
| 2366 | |
| 2367 | idx = 0; |
| 2368 | dq = &phwi_context->be_def_hdrq; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2369 | cq = &phwi_context->be_cq[0]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2370 | mem = &dq->dma_mem; |
| 2371 | mem_descr = phba->init_mem; |
| 2372 | mem_descr += HWI_MEM_ASYNC_HEADER_RING; |
| 2373 | dq_vaddress = mem_descr->mem_array[idx].virtual_address; |
| 2374 | ret = be_fill_queue(dq, mem_descr->mem_array[0].size / |
| 2375 | sizeof(struct phys_addr), |
| 2376 | sizeof(struct phys_addr), dq_vaddress); |
| 2377 | if (ret) { |
| 2378 | shost_printk(KERN_ERR, phba->shost, |
| 2379 | "be_fill_queue Failed for DEF PDU HDR\n"); |
| 2380 | return ret; |
| 2381 | } |
| 2382 | mem->dma = mem_descr->mem_array[idx].bus_address.u.a64.address; |
| 2383 | ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dq, |
| 2384 | def_pdu_ring_sz, |
| 2385 | phba->params.defpdu_hdr_sz); |
| 2386 | if (ret) { |
| 2387 | shost_printk(KERN_ERR, phba->shost, |
| 2388 | "be_cmd_create_default_pdu_queue Failed DEFHDR\n"); |
| 2389 | return ret; |
| 2390 | } |
| 2391 | phwi_ctrlr->default_pdu_hdr.id = phwi_context->be_def_hdrq.id; |
| 2392 | SE_DEBUG(DBG_LVL_8, "iscsi def pdu id is %d\n", |
| 2393 | phwi_context->be_def_hdrq.id); |
| 2394 | hwi_post_async_buffers(phba, 1); |
| 2395 | return 0; |
| 2396 | } |
| 2397 | |
| 2398 | static int |
| 2399 | beiscsi_create_def_data(struct beiscsi_hba *phba, |
| 2400 | struct hwi_context_memory *phwi_context, |
| 2401 | struct hwi_controller *phwi_ctrlr, |
| 2402 | unsigned int def_pdu_ring_sz) |
| 2403 | { |
| 2404 | unsigned int idx; |
| 2405 | int ret; |
| 2406 | struct be_queue_info *dataq, *cq; |
| 2407 | struct be_dma_mem *mem; |
| 2408 | struct be_mem_descriptor *mem_descr; |
| 2409 | void *dq_vaddress; |
| 2410 | |
| 2411 | idx = 0; |
| 2412 | dataq = &phwi_context->be_def_dataq; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2413 | cq = &phwi_context->be_cq[0]; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2414 | mem = &dataq->dma_mem; |
| 2415 | mem_descr = phba->init_mem; |
| 2416 | mem_descr += HWI_MEM_ASYNC_DATA_RING; |
| 2417 | dq_vaddress = mem_descr->mem_array[idx].virtual_address; |
| 2418 | ret = be_fill_queue(dataq, mem_descr->mem_array[0].size / |
| 2419 | sizeof(struct phys_addr), |
| 2420 | sizeof(struct phys_addr), dq_vaddress); |
| 2421 | if (ret) { |
| 2422 | shost_printk(KERN_ERR, phba->shost, |
| 2423 | "be_fill_queue Failed for DEF PDU DATA\n"); |
| 2424 | return ret; |
| 2425 | } |
| 2426 | mem->dma = mem_descr->mem_array[idx].bus_address.u.a64.address; |
| 2427 | ret = be_cmd_create_default_pdu_queue(&phba->ctrl, cq, dataq, |
| 2428 | def_pdu_ring_sz, |
| 2429 | phba->params.defpdu_data_sz); |
| 2430 | if (ret) { |
| 2431 | shost_printk(KERN_ERR, phba->shost, |
| 2432 | "be_cmd_create_default_pdu_queue Failed" |
| 2433 | " for DEF PDU DATA\n"); |
| 2434 | return ret; |
| 2435 | } |
| 2436 | phwi_ctrlr->default_pdu_data.id = phwi_context->be_def_dataq.id; |
| 2437 | SE_DEBUG(DBG_LVL_8, "iscsi def data id is %d\n", |
| 2438 | phwi_context->be_def_dataq.id); |
| 2439 | hwi_post_async_buffers(phba, 0); |
| 2440 | SE_DEBUG(DBG_LVL_8, "DEFAULT PDU DATA RING CREATED \n"); |
| 2441 | return 0; |
| 2442 | } |
| 2443 | |
| 2444 | static int |
| 2445 | beiscsi_post_pages(struct beiscsi_hba *phba) |
| 2446 | { |
| 2447 | struct be_mem_descriptor *mem_descr; |
| 2448 | struct mem_array *pm_arr; |
| 2449 | unsigned int page_offset, i; |
| 2450 | struct be_dma_mem sgl; |
| 2451 | int status; |
| 2452 | |
| 2453 | mem_descr = phba->init_mem; |
| 2454 | mem_descr += HWI_MEM_SGE; |
| 2455 | pm_arr = mem_descr->mem_array; |
| 2456 | |
| 2457 | page_offset = (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io * |
| 2458 | phba->fw_config.iscsi_icd_start) / PAGE_SIZE; |
| 2459 | for (i = 0; i < mem_descr->num_elements; i++) { |
| 2460 | hwi_build_be_sgl_arr(phba, pm_arr, &sgl); |
| 2461 | status = be_cmd_iscsi_post_sgl_pages(&phba->ctrl, &sgl, |
| 2462 | page_offset, |
| 2463 | (pm_arr->size / PAGE_SIZE)); |
| 2464 | page_offset += pm_arr->size / PAGE_SIZE; |
| 2465 | if (status != 0) { |
| 2466 | shost_printk(KERN_ERR, phba->shost, |
| 2467 | "post sgl failed.\n"); |
| 2468 | return status; |
| 2469 | } |
| 2470 | pm_arr++; |
| 2471 | } |
| 2472 | SE_DEBUG(DBG_LVL_8, "POSTED PAGES \n"); |
| 2473 | return 0; |
| 2474 | } |
| 2475 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2476 | static void be_queue_free(struct beiscsi_hba *phba, struct be_queue_info *q) |
| 2477 | { |
| 2478 | struct be_dma_mem *mem = &q->dma_mem; |
| 2479 | if (mem->va) |
| 2480 | pci_free_consistent(phba->pcidev, mem->size, |
| 2481 | mem->va, mem->dma); |
| 2482 | } |
| 2483 | |
| 2484 | static int be_queue_alloc(struct beiscsi_hba *phba, struct be_queue_info *q, |
| 2485 | u16 len, u16 entry_size) |
| 2486 | { |
| 2487 | struct be_dma_mem *mem = &q->dma_mem; |
| 2488 | |
| 2489 | memset(q, 0, sizeof(*q)); |
| 2490 | q->len = len; |
| 2491 | q->entry_size = entry_size; |
| 2492 | mem->size = len * entry_size; |
| 2493 | mem->va = pci_alloc_consistent(phba->pcidev, mem->size, &mem->dma); |
| 2494 | if (!mem->va) |
| 2495 | return -1; |
| 2496 | memset(mem->va, 0, mem->size); |
| 2497 | return 0; |
| 2498 | } |
| 2499 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2500 | static int |
| 2501 | beiscsi_create_wrb_rings(struct beiscsi_hba *phba, |
| 2502 | struct hwi_context_memory *phwi_context, |
| 2503 | struct hwi_controller *phwi_ctrlr) |
| 2504 | { |
| 2505 | unsigned int wrb_mem_index, offset, size, num_wrb_rings; |
| 2506 | u64 pa_addr_lo; |
| 2507 | unsigned int idx, num, i; |
| 2508 | struct mem_array *pwrb_arr; |
| 2509 | void *wrb_vaddr; |
| 2510 | struct be_dma_mem sgl; |
| 2511 | struct be_mem_descriptor *mem_descr; |
| 2512 | int status; |
| 2513 | |
| 2514 | idx = 0; |
| 2515 | mem_descr = phba->init_mem; |
| 2516 | mem_descr += HWI_MEM_WRB; |
| 2517 | pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl, |
| 2518 | GFP_KERNEL); |
| 2519 | if (!pwrb_arr) { |
| 2520 | shost_printk(KERN_ERR, phba->shost, |
| 2521 | "Memory alloc failed in create wrb ring.\n"); |
| 2522 | return -ENOMEM; |
| 2523 | } |
| 2524 | wrb_vaddr = mem_descr->mem_array[idx].virtual_address; |
| 2525 | pa_addr_lo = mem_descr->mem_array[idx].bus_address.u.a64.address; |
| 2526 | num_wrb_rings = mem_descr->mem_array[idx].size / |
| 2527 | (phba->params.wrbs_per_cxn * sizeof(struct iscsi_wrb)); |
| 2528 | |
| 2529 | for (num = 0; num < phba->params.cxns_per_ctrl; num++) { |
| 2530 | if (num_wrb_rings) { |
| 2531 | pwrb_arr[num].virtual_address = wrb_vaddr; |
| 2532 | pwrb_arr[num].bus_address.u.a64.address = pa_addr_lo; |
| 2533 | pwrb_arr[num].size = phba->params.wrbs_per_cxn * |
| 2534 | sizeof(struct iscsi_wrb); |
| 2535 | wrb_vaddr += pwrb_arr[num].size; |
| 2536 | pa_addr_lo += pwrb_arr[num].size; |
| 2537 | num_wrb_rings--; |
| 2538 | } else { |
| 2539 | idx++; |
| 2540 | wrb_vaddr = mem_descr->mem_array[idx].virtual_address; |
| 2541 | pa_addr_lo = mem_descr->mem_array[idx].\ |
| 2542 | bus_address.u.a64.address; |
| 2543 | num_wrb_rings = mem_descr->mem_array[idx].size / |
| 2544 | (phba->params.wrbs_per_cxn * |
| 2545 | sizeof(struct iscsi_wrb)); |
| 2546 | pwrb_arr[num].virtual_address = wrb_vaddr; |
| 2547 | pwrb_arr[num].bus_address.u.a64.address\ |
| 2548 | = pa_addr_lo; |
| 2549 | pwrb_arr[num].size = phba->params.wrbs_per_cxn * |
| 2550 | sizeof(struct iscsi_wrb); |
| 2551 | wrb_vaddr += pwrb_arr[num].size; |
| 2552 | pa_addr_lo += pwrb_arr[num].size; |
| 2553 | num_wrb_rings--; |
| 2554 | } |
| 2555 | } |
| 2556 | for (i = 0; i < phba->params.cxns_per_ctrl; i++) { |
| 2557 | wrb_mem_index = 0; |
| 2558 | offset = 0; |
| 2559 | size = 0; |
| 2560 | |
| 2561 | hwi_build_be_sgl_by_offset(phba, &pwrb_arr[i], &sgl); |
| 2562 | status = be_cmd_wrbq_create(&phba->ctrl, &sgl, |
| 2563 | &phwi_context->be_wrbq[i]); |
| 2564 | if (status != 0) { |
| 2565 | shost_printk(KERN_ERR, phba->shost, |
| 2566 | "wrbq create failed."); |
| 2567 | return status; |
| 2568 | } |
| 2569 | phwi_ctrlr->wrb_context[i].cid = phwi_context->be_wrbq[i].id; |
| 2570 | } |
| 2571 | kfree(pwrb_arr); |
| 2572 | return 0; |
| 2573 | } |
| 2574 | |
| 2575 | static void free_wrb_handles(struct beiscsi_hba *phba) |
| 2576 | { |
| 2577 | unsigned int index; |
| 2578 | struct hwi_controller *phwi_ctrlr; |
| 2579 | struct hwi_wrb_context *pwrb_context; |
| 2580 | |
| 2581 | phwi_ctrlr = phba->phwi_ctrlr; |
| 2582 | for (index = 0; index < phba->params.cxns_per_ctrl * 2; index += 2) { |
| 2583 | pwrb_context = &phwi_ctrlr->wrb_context[index]; |
| 2584 | kfree(pwrb_context->pwrb_handle_base); |
| 2585 | kfree(pwrb_context->pwrb_handle_basestd); |
| 2586 | } |
| 2587 | } |
| 2588 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2589 | static void be_mcc_queues_destroy(struct beiscsi_hba *phba) |
| 2590 | { |
| 2591 | struct be_queue_info *q; |
| 2592 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 2593 | |
| 2594 | q = &phba->ctrl.mcc_obj.q; |
| 2595 | if (q->created) |
| 2596 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_MCCQ); |
| 2597 | be_queue_free(phba, q); |
| 2598 | |
| 2599 | q = &phba->ctrl.mcc_obj.cq; |
| 2600 | if (q->created) |
| 2601 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ); |
| 2602 | be_queue_free(phba, q); |
| 2603 | } |
| 2604 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2605 | static void hwi_cleanup(struct beiscsi_hba *phba) |
| 2606 | { |
| 2607 | struct be_queue_info *q; |
| 2608 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 2609 | struct hwi_controller *phwi_ctrlr; |
| 2610 | struct hwi_context_memory *phwi_context; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2611 | int i, eq_num; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2612 | |
| 2613 | phwi_ctrlr = phba->phwi_ctrlr; |
| 2614 | phwi_context = phwi_ctrlr->phwi_ctxt; |
| 2615 | for (i = 0; i < phba->params.cxns_per_ctrl; i++) { |
| 2616 | q = &phwi_context->be_wrbq[i]; |
| 2617 | if (q->created) |
| 2618 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_WRBQ); |
| 2619 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2620 | free_wrb_handles(phba); |
| 2621 | |
| 2622 | q = &phwi_context->be_def_hdrq; |
| 2623 | if (q->created) |
| 2624 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ); |
| 2625 | |
| 2626 | q = &phwi_context->be_def_dataq; |
| 2627 | if (q->created) |
| 2628 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_DPDUQ); |
| 2629 | |
| 2630 | beiscsi_cmd_q_destroy(ctrl, NULL, QTYPE_SGL); |
| 2631 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2632 | for (i = 0; i < (phba->num_cpus); i++) { |
| 2633 | q = &phwi_context->be_cq[i]; |
| 2634 | if (q->created) |
| 2635 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_CQ); |
| 2636 | } |
| 2637 | if (phba->msix_enabled) |
| 2638 | eq_num = 1; |
| 2639 | else |
| 2640 | eq_num = 0; |
| 2641 | for (i = 0; i < (phba->num_cpus + eq_num); i++) { |
| 2642 | q = &phwi_context->be_eq[i].q; |
| 2643 | if (q->created) |
| 2644 | beiscsi_cmd_q_destroy(ctrl, q, QTYPE_EQ); |
| 2645 | } |
| 2646 | be_mcc_queues_destroy(phba); |
| 2647 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2648 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2649 | static int be_mcc_queues_create(struct beiscsi_hba *phba, |
| 2650 | struct hwi_context_memory *phwi_context) |
| 2651 | { |
| 2652 | struct be_queue_info *q, *cq; |
| 2653 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 2654 | |
| 2655 | /* Alloc MCC compl queue */ |
| 2656 | cq = &phba->ctrl.mcc_obj.cq; |
| 2657 | if (be_queue_alloc(phba, cq, MCC_CQ_LEN, |
| 2658 | sizeof(struct be_mcc_compl))) |
| 2659 | goto err; |
| 2660 | /* Ask BE to create MCC compl queue; */ |
| 2661 | if (phba->msix_enabled) { |
| 2662 | if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq |
| 2663 | [phba->num_cpus].q, false, true, 0)) |
| 2664 | goto mcc_cq_free; |
| 2665 | } else { |
| 2666 | if (beiscsi_cmd_cq_create(ctrl, cq, &phwi_context->be_eq[0].q, |
| 2667 | false, true, 0)) |
| 2668 | goto mcc_cq_free; |
| 2669 | } |
| 2670 | |
| 2671 | /* Alloc MCC queue */ |
| 2672 | q = &phba->ctrl.mcc_obj.q; |
| 2673 | if (be_queue_alloc(phba, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb))) |
| 2674 | goto mcc_cq_destroy; |
| 2675 | |
| 2676 | /* Ask BE to create MCC queue */ |
| 2677 | if (be_cmd_mccq_create(phba, q, cq)) |
| 2678 | goto mcc_q_free; |
| 2679 | |
| 2680 | return 0; |
| 2681 | |
| 2682 | mcc_q_free: |
| 2683 | be_queue_free(phba, q); |
| 2684 | mcc_cq_destroy: |
| 2685 | beiscsi_cmd_q_destroy(ctrl, cq, QTYPE_CQ); |
| 2686 | mcc_cq_free: |
| 2687 | be_queue_free(phba, cq); |
| 2688 | err: |
| 2689 | return -1; |
| 2690 | } |
| 2691 | |
| 2692 | static int find_num_cpus(void) |
| 2693 | { |
| 2694 | int num_cpus = 0; |
| 2695 | |
| 2696 | num_cpus = num_online_cpus(); |
| 2697 | if (num_cpus >= MAX_CPUS) |
| 2698 | num_cpus = MAX_CPUS - 1; |
| 2699 | |
| 2700 | SE_DEBUG(DBG_LVL_8, "num_cpus = %d \n", num_cpus); |
| 2701 | return num_cpus; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2702 | } |
| 2703 | |
| 2704 | static int hwi_init_port(struct beiscsi_hba *phba) |
| 2705 | { |
| 2706 | struct hwi_controller *phwi_ctrlr; |
| 2707 | struct hwi_context_memory *phwi_context; |
| 2708 | unsigned int def_pdu_ring_sz; |
| 2709 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 2710 | int status; |
| 2711 | |
| 2712 | def_pdu_ring_sz = |
| 2713 | phba->params.asyncpdus_per_ctrl * sizeof(struct phys_addr); |
| 2714 | phwi_ctrlr = phba->phwi_ctrlr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2715 | phwi_context = phwi_ctrlr->phwi_ctxt; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2716 | phwi_context->max_eqd = 0; |
| 2717 | phwi_context->min_eqd = 0; |
| 2718 | phwi_context->cur_eqd = 64; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2719 | be_cmd_fw_initialize(&phba->ctrl); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2720 | |
| 2721 | status = beiscsi_create_eqs(phba, phwi_context); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2722 | if (status != 0) { |
| 2723 | shost_printk(KERN_ERR, phba->shost, "EQ not created \n"); |
| 2724 | goto error; |
| 2725 | } |
| 2726 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2727 | status = be_mcc_queues_create(phba, phwi_context); |
| 2728 | if (status != 0) |
| 2729 | goto error; |
| 2730 | |
| 2731 | status = mgmt_check_supported_fw(ctrl, phba); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2732 | if (status != 0) { |
| 2733 | shost_printk(KERN_ERR, phba->shost, |
| 2734 | "Unsupported fw version \n"); |
| 2735 | goto error; |
| 2736 | } |
| 2737 | |
| 2738 | status = mgmt_get_fw_config(ctrl, phba); |
| 2739 | if (status != 0) { |
| 2740 | shost_printk(KERN_ERR, phba->shost, |
| 2741 | "Error getting fw config\n"); |
| 2742 | goto error; |
| 2743 | } |
| 2744 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2745 | status = beiscsi_create_cqs(phba, phwi_context); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2746 | if (status != 0) { |
| 2747 | shost_printk(KERN_ERR, phba->shost, "CQ not created\n"); |
| 2748 | goto error; |
| 2749 | } |
| 2750 | |
| 2751 | status = beiscsi_create_def_hdr(phba, phwi_context, phwi_ctrlr, |
| 2752 | def_pdu_ring_sz); |
| 2753 | if (status != 0) { |
| 2754 | shost_printk(KERN_ERR, phba->shost, |
| 2755 | "Default Header not created\n"); |
| 2756 | goto error; |
| 2757 | } |
| 2758 | |
| 2759 | status = beiscsi_create_def_data(phba, phwi_context, |
| 2760 | phwi_ctrlr, def_pdu_ring_sz); |
| 2761 | if (status != 0) { |
| 2762 | shost_printk(KERN_ERR, phba->shost, |
| 2763 | "Default Data not created\n"); |
| 2764 | goto error; |
| 2765 | } |
| 2766 | |
| 2767 | status = beiscsi_post_pages(phba); |
| 2768 | if (status != 0) { |
| 2769 | shost_printk(KERN_ERR, phba->shost, "Post SGL Pages Failed\n"); |
| 2770 | goto error; |
| 2771 | } |
| 2772 | |
| 2773 | status = beiscsi_create_wrb_rings(phba, phwi_context, phwi_ctrlr); |
| 2774 | if (status != 0) { |
| 2775 | shost_printk(KERN_ERR, phba->shost, |
| 2776 | "WRB Rings not created\n"); |
| 2777 | goto error; |
| 2778 | } |
| 2779 | |
| 2780 | SE_DEBUG(DBG_LVL_8, "hwi_init_port success\n"); |
| 2781 | return 0; |
| 2782 | |
| 2783 | error: |
| 2784 | shost_printk(KERN_ERR, phba->shost, "hwi_init_port failed"); |
| 2785 | hwi_cleanup(phba); |
| 2786 | return -ENOMEM; |
| 2787 | } |
| 2788 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2789 | static int hwi_init_controller(struct beiscsi_hba *phba) |
| 2790 | { |
| 2791 | struct hwi_controller *phwi_ctrlr; |
| 2792 | |
| 2793 | phwi_ctrlr = phba->phwi_ctrlr; |
| 2794 | if (1 == phba->init_mem[HWI_MEM_ADDN_CONTEXT].num_elements) { |
| 2795 | phwi_ctrlr->phwi_ctxt = (struct hwi_context_memory *)phba-> |
| 2796 | init_mem[HWI_MEM_ADDN_CONTEXT].mem_array[0].virtual_address; |
| 2797 | SE_DEBUG(DBG_LVL_8, " phwi_ctrlr->phwi_ctxt=%p \n", |
| 2798 | phwi_ctrlr->phwi_ctxt); |
| 2799 | } else { |
| 2800 | shost_printk(KERN_ERR, phba->shost, |
| 2801 | "HWI_MEM_ADDN_CONTEXT is more than one element." |
| 2802 | "Failing to load\n"); |
| 2803 | return -ENOMEM; |
| 2804 | } |
| 2805 | |
| 2806 | iscsi_init_global_templates(phba); |
| 2807 | beiscsi_init_wrb_handle(phba); |
| 2808 | hwi_init_async_pdu_ctx(phba); |
| 2809 | if (hwi_init_port(phba) != 0) { |
| 2810 | shost_printk(KERN_ERR, phba->shost, |
| 2811 | "hwi_init_controller failed\n"); |
| 2812 | return -ENOMEM; |
| 2813 | } |
| 2814 | return 0; |
| 2815 | } |
| 2816 | |
| 2817 | static void beiscsi_free_mem(struct beiscsi_hba *phba) |
| 2818 | { |
| 2819 | struct be_mem_descriptor *mem_descr; |
| 2820 | int i, j; |
| 2821 | |
| 2822 | mem_descr = phba->init_mem; |
| 2823 | i = 0; |
| 2824 | j = 0; |
| 2825 | for (i = 0; i < SE_MEM_MAX; i++) { |
| 2826 | for (j = mem_descr->num_elements; j > 0; j--) { |
| 2827 | pci_free_consistent(phba->pcidev, |
| 2828 | mem_descr->mem_array[j - 1].size, |
| 2829 | mem_descr->mem_array[j - 1].virtual_address, |
| 2830 | mem_descr->mem_array[j - 1].bus_address. |
| 2831 | u.a64.address); |
| 2832 | } |
| 2833 | kfree(mem_descr->mem_array); |
| 2834 | mem_descr++; |
| 2835 | } |
| 2836 | kfree(phba->init_mem); |
| 2837 | kfree(phba->phwi_ctrlr); |
| 2838 | } |
| 2839 | |
| 2840 | static int beiscsi_init_controller(struct beiscsi_hba *phba) |
| 2841 | { |
| 2842 | int ret = -ENOMEM; |
| 2843 | |
| 2844 | ret = beiscsi_get_memory(phba); |
| 2845 | if (ret < 0) { |
| 2846 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe -" |
| 2847 | "Failed in beiscsi_alloc_memory \n"); |
| 2848 | return ret; |
| 2849 | } |
| 2850 | |
| 2851 | ret = hwi_init_controller(phba); |
| 2852 | if (ret) |
| 2853 | goto free_init; |
| 2854 | SE_DEBUG(DBG_LVL_8, "Return success from beiscsi_init_controller"); |
| 2855 | return 0; |
| 2856 | |
| 2857 | free_init: |
| 2858 | beiscsi_free_mem(phba); |
| 2859 | return -ENOMEM; |
| 2860 | } |
| 2861 | |
| 2862 | static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba) |
| 2863 | { |
| 2864 | struct be_mem_descriptor *mem_descr_sglh, *mem_descr_sg; |
| 2865 | struct sgl_handle *psgl_handle; |
| 2866 | struct iscsi_sge *pfrag; |
| 2867 | unsigned int arr_index, i, idx; |
| 2868 | |
| 2869 | phba->io_sgl_hndl_avbl = 0; |
| 2870 | phba->eh_sgl_hndl_avbl = 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2871 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2872 | mem_descr_sglh = phba->init_mem; |
| 2873 | mem_descr_sglh += HWI_MEM_SGLH; |
| 2874 | if (1 == mem_descr_sglh->num_elements) { |
| 2875 | phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * |
| 2876 | phba->params.ios_per_ctrl, |
| 2877 | GFP_KERNEL); |
| 2878 | if (!phba->io_sgl_hndl_base) { |
| 2879 | shost_printk(KERN_ERR, phba->shost, |
| 2880 | "Mem Alloc Failed. Failing to load\n"); |
| 2881 | return -ENOMEM; |
| 2882 | } |
| 2883 | phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * |
| 2884 | (phba->params.icds_per_ctrl - |
| 2885 | phba->params.ios_per_ctrl), |
| 2886 | GFP_KERNEL); |
| 2887 | if (!phba->eh_sgl_hndl_base) { |
| 2888 | kfree(phba->io_sgl_hndl_base); |
| 2889 | shost_printk(KERN_ERR, phba->shost, |
| 2890 | "Mem Alloc Failed. Failing to load\n"); |
| 2891 | return -ENOMEM; |
| 2892 | } |
| 2893 | } else { |
| 2894 | shost_printk(KERN_ERR, phba->shost, |
| 2895 | "HWI_MEM_SGLH is more than one element." |
| 2896 | "Failing to load\n"); |
| 2897 | return -ENOMEM; |
| 2898 | } |
| 2899 | |
| 2900 | arr_index = 0; |
| 2901 | idx = 0; |
| 2902 | while (idx < mem_descr_sglh->num_elements) { |
| 2903 | psgl_handle = mem_descr_sglh->mem_array[idx].virtual_address; |
| 2904 | |
| 2905 | for (i = 0; i < (mem_descr_sglh->mem_array[idx].size / |
| 2906 | sizeof(struct sgl_handle)); i++) { |
| 2907 | if (arr_index < phba->params.ios_per_ctrl) { |
| 2908 | phba->io_sgl_hndl_base[arr_index] = psgl_handle; |
| 2909 | phba->io_sgl_hndl_avbl++; |
| 2910 | arr_index++; |
| 2911 | } else { |
| 2912 | phba->eh_sgl_hndl_base[arr_index - |
| 2913 | phba->params.ios_per_ctrl] = |
| 2914 | psgl_handle; |
| 2915 | arr_index++; |
| 2916 | phba->eh_sgl_hndl_avbl++; |
| 2917 | } |
| 2918 | psgl_handle++; |
| 2919 | } |
| 2920 | idx++; |
| 2921 | } |
| 2922 | SE_DEBUG(DBG_LVL_8, |
| 2923 | "phba->io_sgl_hndl_avbl=%d" |
| 2924 | "phba->eh_sgl_hndl_avbl=%d \n", |
| 2925 | phba->io_sgl_hndl_avbl, |
| 2926 | phba->eh_sgl_hndl_avbl); |
| 2927 | mem_descr_sg = phba->init_mem; |
| 2928 | mem_descr_sg += HWI_MEM_SGE; |
| 2929 | SE_DEBUG(DBG_LVL_8, "\n mem_descr_sg->num_elements=%d \n", |
| 2930 | mem_descr_sg->num_elements); |
| 2931 | arr_index = 0; |
| 2932 | idx = 0; |
| 2933 | while (idx < mem_descr_sg->num_elements) { |
| 2934 | pfrag = mem_descr_sg->mem_array[idx].virtual_address; |
| 2935 | |
| 2936 | for (i = 0; |
| 2937 | i < (mem_descr_sg->mem_array[idx].size) / |
| 2938 | (sizeof(struct iscsi_sge) * phba->params.num_sge_per_io); |
| 2939 | i++) { |
| 2940 | if (arr_index < phba->params.ios_per_ctrl) |
| 2941 | psgl_handle = phba->io_sgl_hndl_base[arr_index]; |
| 2942 | else |
| 2943 | psgl_handle = phba->eh_sgl_hndl_base[arr_index - |
| 2944 | phba->params.ios_per_ctrl]; |
| 2945 | psgl_handle->pfrag = pfrag; |
| 2946 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_hi, pfrag, 0); |
| 2947 | AMAP_SET_BITS(struct amap_iscsi_sge, addr_lo, pfrag, 0); |
| 2948 | pfrag += phba->params.num_sge_per_io; |
| 2949 | psgl_handle->sgl_index = |
| 2950 | phba->fw_config.iscsi_cid_start + arr_index++; |
| 2951 | } |
| 2952 | idx++; |
| 2953 | } |
| 2954 | phba->io_sgl_free_index = 0; |
| 2955 | phba->io_sgl_alloc_index = 0; |
| 2956 | phba->eh_sgl_free_index = 0; |
| 2957 | phba->eh_sgl_alloc_index = 0; |
| 2958 | return 0; |
| 2959 | } |
| 2960 | |
| 2961 | static int hba_setup_cid_tbls(struct beiscsi_hba *phba) |
| 2962 | { |
| 2963 | int i, new_cid; |
| 2964 | |
| 2965 | phba->cid_array = kmalloc(sizeof(void *) * phba->params.cxns_per_ctrl, |
| 2966 | GFP_KERNEL); |
| 2967 | if (!phba->cid_array) { |
| 2968 | shost_printk(KERN_ERR, phba->shost, |
| 2969 | "Failed to allocate memory in " |
| 2970 | "hba_setup_cid_tbls\n"); |
| 2971 | return -ENOMEM; |
| 2972 | } |
| 2973 | phba->ep_array = kmalloc(sizeof(struct iscsi_endpoint *) * |
| 2974 | phba->params.cxns_per_ctrl * 2, GFP_KERNEL); |
| 2975 | if (!phba->ep_array) { |
| 2976 | shost_printk(KERN_ERR, phba->shost, |
| 2977 | "Failed to allocate memory in " |
| 2978 | "hba_setup_cid_tbls \n"); |
| 2979 | kfree(phba->cid_array); |
| 2980 | return -ENOMEM; |
| 2981 | } |
| 2982 | new_cid = phba->fw_config.iscsi_icd_start; |
| 2983 | for (i = 0; i < phba->params.cxns_per_ctrl; i++) { |
| 2984 | phba->cid_array[i] = new_cid; |
| 2985 | new_cid += 2; |
| 2986 | } |
| 2987 | phba->avlbl_cids = phba->params.cxns_per_ctrl; |
| 2988 | return 0; |
| 2989 | } |
| 2990 | |
| 2991 | static unsigned char hwi_enable_intr(struct beiscsi_hba *phba) |
| 2992 | { |
| 2993 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 2994 | struct hwi_controller *phwi_ctrlr; |
| 2995 | struct hwi_context_memory *phwi_context; |
| 2996 | struct be_queue_info *eq; |
| 2997 | u8 __iomem *addr; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 2998 | u32 reg, i; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 2999 | u32 enabled; |
| 3000 | |
| 3001 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3002 | phwi_context = phwi_ctrlr->phwi_ctxt; |
| 3003 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3004 | addr = (u8 __iomem *) ((u8 __iomem *) ctrl->pcicfg + |
| 3005 | PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET); |
| 3006 | reg = ioread32(addr); |
| 3007 | SE_DEBUG(DBG_LVL_8, "reg =x%08x \n", reg); |
| 3008 | |
| 3009 | enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| 3010 | if (!enabled) { |
| 3011 | reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| 3012 | SE_DEBUG(DBG_LVL_8, "reg =x%08x addr=%p \n", reg, addr); |
| 3013 | iowrite32(reg, addr); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3014 | for (i = 0; i <= phba->num_cpus; i++) { |
| 3015 | eq = &phwi_context->be_eq[i].q; |
| 3016 | SE_DEBUG(DBG_LVL_8, "eq->id=%d \n", eq->id); |
| 3017 | hwi_ring_eq_db(phba, eq->id, 0, 0, 1, 1); |
| 3018 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3019 | } else |
| 3020 | shost_printk(KERN_WARNING, phba->shost, |
| 3021 | "In hwi_enable_intr, Not Enabled \n"); |
| 3022 | return true; |
| 3023 | } |
| 3024 | |
| 3025 | static void hwi_disable_intr(struct beiscsi_hba *phba) |
| 3026 | { |
| 3027 | struct be_ctrl_info *ctrl = &phba->ctrl; |
| 3028 | |
| 3029 | u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET; |
| 3030 | u32 reg = ioread32(addr); |
| 3031 | |
| 3032 | u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| 3033 | if (enabled) { |
| 3034 | reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK; |
| 3035 | iowrite32(reg, addr); |
| 3036 | } else |
| 3037 | shost_printk(KERN_WARNING, phba->shost, |
| 3038 | "In hwi_disable_intr, Already Disabled \n"); |
| 3039 | } |
| 3040 | |
| 3041 | static int beiscsi_init_port(struct beiscsi_hba *phba) |
| 3042 | { |
| 3043 | int ret; |
| 3044 | |
| 3045 | ret = beiscsi_init_controller(phba); |
| 3046 | if (ret < 0) { |
| 3047 | shost_printk(KERN_ERR, phba->shost, |
| 3048 | "beiscsi_dev_probe - Failed in" |
| 3049 | "beiscsi_init_controller \n"); |
| 3050 | return ret; |
| 3051 | } |
| 3052 | ret = beiscsi_init_sgl_handle(phba); |
| 3053 | if (ret < 0) { |
| 3054 | shost_printk(KERN_ERR, phba->shost, |
| 3055 | "beiscsi_dev_probe - Failed in" |
| 3056 | "beiscsi_init_sgl_handle \n"); |
| 3057 | goto do_cleanup_ctrlr; |
| 3058 | } |
| 3059 | |
| 3060 | if (hba_setup_cid_tbls(phba)) { |
| 3061 | shost_printk(KERN_ERR, phba->shost, |
| 3062 | "Failed in hba_setup_cid_tbls\n"); |
| 3063 | kfree(phba->io_sgl_hndl_base); |
| 3064 | kfree(phba->eh_sgl_hndl_base); |
| 3065 | goto do_cleanup_ctrlr; |
| 3066 | } |
| 3067 | |
| 3068 | return ret; |
| 3069 | |
| 3070 | do_cleanup_ctrlr: |
| 3071 | hwi_cleanup(phba); |
| 3072 | return ret; |
| 3073 | } |
| 3074 | |
| 3075 | static void hwi_purge_eq(struct beiscsi_hba *phba) |
| 3076 | { |
| 3077 | struct hwi_controller *phwi_ctrlr; |
| 3078 | struct hwi_context_memory *phwi_context; |
| 3079 | struct be_queue_info *eq; |
| 3080 | struct be_eq_entry *eqe = NULL; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3081 | int i, eq_msix; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3082 | |
| 3083 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3084 | phwi_context = phwi_ctrlr->phwi_ctxt; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3085 | if (phba->msix_enabled) |
| 3086 | eq_msix = 1; |
| 3087 | else |
| 3088 | eq_msix = 0; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3089 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3090 | for (i = 0; i < (phba->num_cpus + eq_msix); i++) { |
| 3091 | eq = &phwi_context->be_eq[i].q; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3092 | eqe = queue_tail_node(eq); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3093 | |
| 3094 | while (eqe->dw[offsetof(struct amap_eq_entry, valid) / 32] |
| 3095 | & EQE_VALID_MASK) { |
| 3096 | AMAP_SET_BITS(struct amap_eq_entry, valid, eqe, 0); |
| 3097 | queue_tail_inc(eq); |
| 3098 | eqe = queue_tail_node(eq); |
| 3099 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3100 | } |
| 3101 | } |
| 3102 | |
| 3103 | static void beiscsi_clean_port(struct beiscsi_hba *phba) |
| 3104 | { |
| 3105 | unsigned char mgmt_status; |
| 3106 | |
| 3107 | mgmt_status = mgmt_epfw_cleanup(phba, CMD_CONNECTION_CHUTE_0); |
| 3108 | if (mgmt_status) |
| 3109 | shost_printk(KERN_WARNING, phba->shost, |
| 3110 | "mgmt_epfw_cleanup FAILED \n"); |
| 3111 | hwi_cleanup(phba); |
| 3112 | hwi_purge_eq(phba); |
| 3113 | kfree(phba->io_sgl_hndl_base); |
| 3114 | kfree(phba->eh_sgl_hndl_base); |
| 3115 | kfree(phba->cid_array); |
| 3116 | kfree(phba->ep_array); |
| 3117 | } |
| 3118 | |
| 3119 | void |
| 3120 | beiscsi_offload_connection(struct beiscsi_conn *beiscsi_conn, |
| 3121 | struct beiscsi_offload_params *params) |
| 3122 | { |
| 3123 | struct wrb_handle *pwrb_handle; |
| 3124 | struct iscsi_target_context_update_wrb *pwrb = NULL; |
| 3125 | struct be_mem_descriptor *mem_descr; |
| 3126 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
| 3127 | u32 doorbell = 0; |
| 3128 | |
| 3129 | /* |
| 3130 | * We can always use 0 here because it is reserved by libiscsi for |
| 3131 | * login/startup related tasks. |
| 3132 | */ |
| 3133 | pwrb_handle = alloc_wrb_handle(phba, beiscsi_conn->beiscsi_conn_cid, 0); |
| 3134 | pwrb = (struct iscsi_target_context_update_wrb *)pwrb_handle->pwrb; |
| 3135 | memset(pwrb, 0, sizeof(*pwrb)); |
| 3136 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3137 | max_burst_length, pwrb, params->dw[offsetof |
| 3138 | (struct amap_beiscsi_offload_params, |
| 3139 | max_burst_length) / 32]); |
| 3140 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3141 | max_send_data_segment_length, pwrb, |
| 3142 | params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3143 | max_send_data_segment_length) / 32]); |
| 3144 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3145 | first_burst_length, |
| 3146 | pwrb, |
| 3147 | params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3148 | first_burst_length) / 32]); |
| 3149 | |
| 3150 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, erl, pwrb, |
| 3151 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3152 | erl) / 32] & OFFLD_PARAMS_ERL)); |
| 3153 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, dde, pwrb, |
| 3154 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3155 | dde) / 32] & OFFLD_PARAMS_DDE) >> 2); |
| 3156 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, hde, pwrb, |
| 3157 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3158 | hde) / 32] & OFFLD_PARAMS_HDE) >> 3); |
| 3159 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ir2t, pwrb, |
| 3160 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3161 | ir2t) / 32] & OFFLD_PARAMS_IR2T) >> 4); |
| 3162 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, imd, pwrb, |
| 3163 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3164 | imd) / 32] & OFFLD_PARAMS_IMD) >> 5); |
| 3165 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, stat_sn, |
| 3166 | pwrb, |
| 3167 | (params->dw[offsetof(struct amap_beiscsi_offload_params, |
| 3168 | exp_statsn) / 32] + 1)); |
| 3169 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, type, pwrb, |
| 3170 | 0x7); |
| 3171 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, wrb_idx, |
| 3172 | pwrb, pwrb_handle->wrb_index); |
| 3173 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, ptr2nextwrb, |
| 3174 | pwrb, pwrb_handle->nxt_wrb_index); |
| 3175 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3176 | session_state, pwrb, 0); |
| 3177 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, compltonack, |
| 3178 | pwrb, 1); |
| 3179 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, notpredblq, |
| 3180 | pwrb, 0); |
| 3181 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, mode, pwrb, |
| 3182 | 0); |
| 3183 | |
| 3184 | mem_descr = phba->init_mem; |
| 3185 | mem_descr += ISCSI_MEM_GLOBAL_HEADER; |
| 3186 | |
| 3187 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3188 | pad_buffer_addr_hi, pwrb, |
| 3189 | mem_descr->mem_array[0].bus_address.u.a32.address_hi); |
| 3190 | AMAP_SET_BITS(struct amap_iscsi_target_context_update_wrb, |
| 3191 | pad_buffer_addr_lo, pwrb, |
| 3192 | mem_descr->mem_array[0].bus_address.u.a32.address_lo); |
| 3193 | |
| 3194 | be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_target_context_update_wrb)); |
| 3195 | |
| 3196 | doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3197 | doorbell |= (pwrb_handle->wrb_index & DB_DEF_PDU_WRB_INDEX_MASK) |
| 3198 | << DB_DEF_PDU_WRB_INDEX_SHIFT; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3199 | doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; |
| 3200 | |
| 3201 | iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET); |
| 3202 | } |
| 3203 | |
| 3204 | static void beiscsi_parse_pdu(struct iscsi_conn *conn, itt_t itt, |
| 3205 | int *index, int *age) |
| 3206 | { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3207 | *index = (int)itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3208 | if (age) |
| 3209 | *age = conn->session->age; |
| 3210 | } |
| 3211 | |
| 3212 | /** |
| 3213 | * beiscsi_alloc_pdu - allocates pdu and related resources |
| 3214 | * @task: libiscsi task |
| 3215 | * @opcode: opcode of pdu for task |
| 3216 | * |
| 3217 | * This is called with the session lock held. It will allocate |
| 3218 | * the wrb and sgl if needed for the command. And it will prep |
| 3219 | * the pdu's itt. beiscsi_parse_pdu will later translate |
| 3220 | * the pdu itt to the libiscsi task itt. |
| 3221 | */ |
| 3222 | static int beiscsi_alloc_pdu(struct iscsi_task *task, uint8_t opcode) |
| 3223 | { |
| 3224 | struct beiscsi_io_task *io_task = task->dd_data; |
| 3225 | struct iscsi_conn *conn = task->conn; |
| 3226 | struct beiscsi_conn *beiscsi_conn = conn->dd_data; |
| 3227 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
| 3228 | struct hwi_wrb_context *pwrb_context; |
| 3229 | struct hwi_controller *phwi_ctrlr; |
| 3230 | itt_t itt; |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3231 | struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; |
| 3232 | dma_addr_t paddr; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3233 | |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3234 | io_task->cmd_bhs = pci_pool_alloc(beiscsi_sess->bhs_pool, |
| 3235 | GFP_KERNEL, &paddr); |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3236 | if (!io_task->cmd_bhs) |
| 3237 | return -ENOMEM; |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3238 | io_task->bhs_pa.u.a64.address = paddr; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3239 | io_task->libiscsi_itt = (itt_t)task->itt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3240 | io_task->pwrb_handle = alloc_wrb_handle(phba, |
| 3241 | beiscsi_conn->beiscsi_conn_cid, |
| 3242 | task->itt); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3243 | io_task->conn = beiscsi_conn; |
| 3244 | |
| 3245 | task->hdr = (struct iscsi_hdr *)&io_task->cmd_bhs->iscsi_hdr; |
| 3246 | task->hdr_max = sizeof(struct be_cmd_bhs); |
| 3247 | |
| 3248 | if (task->sc) { |
| 3249 | spin_lock(&phba->io_sgl_lock); |
| 3250 | io_task->psgl_handle = alloc_io_sgl_handle(phba); |
| 3251 | spin_unlock(&phba->io_sgl_lock); |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3252 | if (!io_task->psgl_handle) |
| 3253 | goto free_hndls; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3254 | } else { |
| 3255 | io_task->scsi_cmnd = NULL; |
| 3256 | if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) { |
| 3257 | if (!beiscsi_conn->login_in_progress) { |
| 3258 | spin_lock(&phba->mgmt_sgl_lock); |
| 3259 | io_task->psgl_handle = (struct sgl_handle *) |
| 3260 | alloc_mgmt_sgl_handle(phba); |
| 3261 | spin_unlock(&phba->mgmt_sgl_lock); |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3262 | if (!io_task->psgl_handle) |
| 3263 | goto free_hndls; |
| 3264 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3265 | beiscsi_conn->login_in_progress = 1; |
| 3266 | beiscsi_conn->plogin_sgl_handle = |
| 3267 | io_task->psgl_handle; |
| 3268 | } else { |
| 3269 | io_task->psgl_handle = |
| 3270 | beiscsi_conn->plogin_sgl_handle; |
| 3271 | } |
| 3272 | } else { |
| 3273 | spin_lock(&phba->mgmt_sgl_lock); |
| 3274 | io_task->psgl_handle = alloc_mgmt_sgl_handle(phba); |
| 3275 | spin_unlock(&phba->mgmt_sgl_lock); |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3276 | if (!io_task->psgl_handle) |
| 3277 | goto free_hndls; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3278 | } |
| 3279 | } |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3280 | itt = (itt_t) cpu_to_be32(((unsigned int)io_task->pwrb_handle-> |
| 3281 | wrb_index << 16) | (unsigned int) |
| 3282 | (io_task->psgl_handle->sgl_index)); |
| 3283 | io_task->pwrb_handle->pio_handle = task; |
| 3284 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3285 | io_task->cmd_bhs->iscsi_hdr.itt = itt; |
| 3286 | return 0; |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3287 | |
| 3288 | free_hndls: |
| 3289 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3290 | pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid]; |
| 3291 | free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle); |
| 3292 | io_task->pwrb_handle = NULL; |
| 3293 | pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, |
| 3294 | io_task->bhs_pa.u.a64.address); |
| 3295 | SE_DEBUG(DBG_LVL_1, "Alloc of SGL_ICD Failed \n"); |
| 3296 | return -ENOMEM; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3297 | } |
| 3298 | |
| 3299 | static void beiscsi_cleanup_task(struct iscsi_task *task) |
| 3300 | { |
| 3301 | struct beiscsi_io_task *io_task = task->dd_data; |
| 3302 | struct iscsi_conn *conn = task->conn; |
| 3303 | struct beiscsi_conn *beiscsi_conn = conn->dd_data; |
| 3304 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3305 | struct beiscsi_session *beiscsi_sess = beiscsi_conn->beiscsi_sess; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3306 | struct hwi_wrb_context *pwrb_context; |
| 3307 | struct hwi_controller *phwi_ctrlr; |
| 3308 | |
| 3309 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3310 | pwrb_context = &phwi_ctrlr->wrb_context[beiscsi_conn->beiscsi_conn_cid]; |
| 3311 | if (io_task->pwrb_handle) { |
| 3312 | free_wrb_handle(phba, pwrb_context, io_task->pwrb_handle); |
| 3313 | io_task->pwrb_handle = NULL; |
| 3314 | } |
| 3315 | |
Jayamohan Kallickal | 2afc95b | 2009-09-22 08:22:26 +0530 | [diff] [blame] | 3316 | if (io_task->cmd_bhs) { |
| 3317 | pci_pool_free(beiscsi_sess->bhs_pool, io_task->cmd_bhs, |
| 3318 | io_task->bhs_pa.u.a64.address); |
| 3319 | } |
| 3320 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3321 | if (task->sc) { |
| 3322 | if (io_task->psgl_handle) { |
| 3323 | spin_lock(&phba->io_sgl_lock); |
| 3324 | free_io_sgl_handle(phba, io_task->psgl_handle); |
| 3325 | spin_unlock(&phba->io_sgl_lock); |
| 3326 | io_task->psgl_handle = NULL; |
| 3327 | } |
| 3328 | } else { |
| 3329 | if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN) |
| 3330 | return; |
| 3331 | if (io_task->psgl_handle) { |
| 3332 | spin_lock(&phba->mgmt_sgl_lock); |
| 3333 | free_mgmt_sgl_handle(phba, io_task->psgl_handle); |
| 3334 | spin_unlock(&phba->mgmt_sgl_lock); |
| 3335 | io_task->psgl_handle = NULL; |
| 3336 | } |
| 3337 | } |
| 3338 | } |
| 3339 | |
| 3340 | static int beiscsi_iotask(struct iscsi_task *task, struct scatterlist *sg, |
| 3341 | unsigned int num_sg, unsigned int xferlen, |
| 3342 | unsigned int writedir) |
| 3343 | { |
| 3344 | |
| 3345 | struct beiscsi_io_task *io_task = task->dd_data; |
| 3346 | struct iscsi_conn *conn = task->conn; |
| 3347 | struct beiscsi_conn *beiscsi_conn = conn->dd_data; |
| 3348 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
| 3349 | struct iscsi_wrb *pwrb = NULL; |
| 3350 | unsigned int doorbell = 0; |
| 3351 | |
| 3352 | pwrb = io_task->pwrb_handle->pwrb; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3353 | io_task->cmd_bhs->iscsi_hdr.exp_statsn = 0; |
| 3354 | io_task->bhs_len = sizeof(struct be_cmd_bhs); |
| 3355 | |
| 3356 | if (writedir) { |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3357 | memset(&io_task->cmd_bhs->iscsi_data_pdu, 0, 48); |
| 3358 | AMAP_SET_BITS(struct amap_pdu_data_out, itt, |
| 3359 | &io_task->cmd_bhs->iscsi_data_pdu, |
| 3360 | (unsigned int)io_task->cmd_bhs->iscsi_hdr.itt); |
| 3361 | AMAP_SET_BITS(struct amap_pdu_data_out, opcode, |
| 3362 | &io_task->cmd_bhs->iscsi_data_pdu, |
| 3363 | ISCSI_OPCODE_SCSI_DATA_OUT); |
| 3364 | AMAP_SET_BITS(struct amap_pdu_data_out, final_bit, |
| 3365 | &io_task->cmd_bhs->iscsi_data_pdu, 1); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3366 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3367 | INI_WR_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3368 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3369 | } else { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3370 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3371 | INI_RD_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3372 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 0); |
| 3373 | } |
| 3374 | memcpy(&io_task->cmd_bhs->iscsi_data_pdu. |
| 3375 | dw[offsetof(struct amap_pdu_data_out, lun) / 32], |
| 3376 | io_task->cmd_bhs->iscsi_hdr.lun, sizeof(struct scsi_lun)); |
| 3377 | |
| 3378 | AMAP_SET_BITS(struct amap_iscsi_wrb, lun, pwrb, |
| 3379 | cpu_to_be16((unsigned short)io_task->cmd_bhs->iscsi_hdr. |
| 3380 | lun[0])); |
| 3381 | AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, xferlen); |
| 3382 | AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, |
| 3383 | io_task->pwrb_handle->wrb_index); |
| 3384 | AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, |
| 3385 | be32_to_cpu(task->cmdsn)); |
| 3386 | AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, |
| 3387 | io_task->psgl_handle->sgl_index); |
| 3388 | |
| 3389 | hwi_write_sgl(pwrb, sg, num_sg, io_task); |
| 3390 | |
| 3391 | AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, |
| 3392 | io_task->pwrb_handle->nxt_wrb_index); |
| 3393 | be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); |
| 3394 | |
| 3395 | doorbell |= beiscsi_conn->beiscsi_conn_cid & DB_WRB_POST_CID_MASK; |
| 3396 | doorbell |= (io_task->pwrb_handle->wrb_index & |
| 3397 | DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT; |
| 3398 | doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; |
| 3399 | |
| 3400 | iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET); |
| 3401 | return 0; |
| 3402 | } |
| 3403 | |
| 3404 | static int beiscsi_mtask(struct iscsi_task *task) |
| 3405 | { |
| 3406 | struct beiscsi_io_task *aborted_io_task, *io_task = task->dd_data; |
| 3407 | struct iscsi_conn *conn = task->conn; |
| 3408 | struct beiscsi_conn *beiscsi_conn = conn->dd_data; |
| 3409 | struct beiscsi_hba *phba = beiscsi_conn->phba; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3410 | struct iscsi_session *session; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3411 | struct iscsi_wrb *pwrb = NULL; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3412 | struct hwi_controller *phwi_ctrlr; |
| 3413 | struct hwi_wrb_context *pwrb_context; |
| 3414 | struct wrb_handle *pwrb_handle; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3415 | unsigned int doorbell = 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3416 | unsigned int i, cid; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3417 | struct iscsi_task *aborted_task; |
| 3418 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3419 | cid = beiscsi_conn->beiscsi_conn_cid; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3420 | pwrb = io_task->pwrb_handle->pwrb; |
| 3421 | AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, |
| 3422 | be32_to_cpu(task->cmdsn)); |
| 3423 | AMAP_SET_BITS(struct amap_iscsi_wrb, wrb_idx, pwrb, |
| 3424 | io_task->pwrb_handle->wrb_index); |
| 3425 | AMAP_SET_BITS(struct amap_iscsi_wrb, sgl_icd_idx, pwrb, |
| 3426 | io_task->psgl_handle->sgl_index); |
| 3427 | |
| 3428 | switch (task->hdr->opcode & ISCSI_OPCODE_MASK) { |
| 3429 | case ISCSI_OP_LOGIN: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3430 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3431 | TGT_DM_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3432 | AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); |
| 3433 | AMAP_SET_BITS(struct amap_iscsi_wrb, cmdsn_itt, pwrb, 1); |
| 3434 | hwi_write_buffer(pwrb, task); |
| 3435 | break; |
| 3436 | case ISCSI_OP_NOOP_OUT: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3437 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3438 | INI_RD_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3439 | hwi_write_buffer(pwrb, task); |
| 3440 | break; |
| 3441 | case ISCSI_OP_TEXT: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3442 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3443 | INI_WR_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3444 | AMAP_SET_BITS(struct amap_iscsi_wrb, dsp, pwrb, 1); |
| 3445 | hwi_write_buffer(pwrb, task); |
| 3446 | break; |
| 3447 | case ISCSI_OP_SCSI_TMFUNC: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3448 | session = conn->session; |
| 3449 | i = ((struct iscsi_tm *)task->hdr)->rtt; |
| 3450 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3451 | pwrb_context = &phwi_ctrlr->wrb_context[cid]; |
| 3452 | pwrb_handle = pwrb_context->pwrb_handle_basestd[be32_to_cpu(i) |
| 3453 | >> 16]; |
| 3454 | aborted_task = pwrb_handle->pio_handle; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3455 | if (!aborted_task) |
| 3456 | return 0; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3457 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3458 | aborted_io_task = aborted_task->dd_data; |
| 3459 | if (!aborted_io_task->scsi_cmnd) |
| 3460 | return 0; |
| 3461 | |
| 3462 | mgmt_invalidate_icds(phba, |
| 3463 | aborted_io_task->psgl_handle->sgl_index, |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3464 | cid); |
| 3465 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3466 | INI_TMF_CMD); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3467 | AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); |
| 3468 | hwi_write_buffer(pwrb, task); |
| 3469 | break; |
| 3470 | case ISCSI_OP_LOGOUT: |
| 3471 | AMAP_SET_BITS(struct amap_iscsi_wrb, dmsg, pwrb, 0); |
| 3472 | AMAP_SET_BITS(struct amap_iscsi_wrb, type, pwrb, |
| 3473 | HWH_TYPE_LOGOUT); |
| 3474 | hwi_write_buffer(pwrb, task); |
| 3475 | break; |
| 3476 | |
| 3477 | default: |
| 3478 | SE_DEBUG(DBG_LVL_1, "opcode =%d Not supported \n", |
| 3479 | task->hdr->opcode & ISCSI_OPCODE_MASK); |
| 3480 | return -EINVAL; |
| 3481 | } |
| 3482 | |
| 3483 | AMAP_SET_BITS(struct amap_iscsi_wrb, r2t_exp_dtl, pwrb, |
| 3484 | be32_to_cpu(task->data_count)); |
| 3485 | AMAP_SET_BITS(struct amap_iscsi_wrb, ptr2nextwrb, pwrb, |
| 3486 | io_task->pwrb_handle->nxt_wrb_index); |
| 3487 | be_dws_le_to_cpu(pwrb, sizeof(struct iscsi_wrb)); |
| 3488 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3489 | doorbell |= cid & DB_WRB_POST_CID_MASK; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3490 | doorbell |= (io_task->pwrb_handle->wrb_index & |
| 3491 | DB_DEF_PDU_WRB_INDEX_MASK) << DB_DEF_PDU_WRB_INDEX_SHIFT; |
| 3492 | doorbell |= 1 << DB_DEF_PDU_NUM_POSTED_SHIFT; |
| 3493 | iowrite32(doorbell, phba->db_va + DB_TXULP0_OFFSET); |
| 3494 | return 0; |
| 3495 | } |
| 3496 | |
| 3497 | static int beiscsi_task_xmit(struct iscsi_task *task) |
| 3498 | { |
| 3499 | struct iscsi_conn *conn = task->conn; |
| 3500 | struct beiscsi_io_task *io_task = task->dd_data; |
| 3501 | struct scsi_cmnd *sc = task->sc; |
| 3502 | struct beiscsi_conn *beiscsi_conn = conn->dd_data; |
| 3503 | struct scatterlist *sg; |
| 3504 | int num_sg; |
| 3505 | unsigned int writedir = 0, xferlen = 0; |
| 3506 | |
| 3507 | SE_DEBUG(DBG_LVL_4, "\n cid=%d In beiscsi_task_xmit task=%p conn=%p \t" |
| 3508 | "beiscsi_conn=%p \n", beiscsi_conn->beiscsi_conn_cid, |
| 3509 | task, conn, beiscsi_conn); |
| 3510 | if (!sc) |
| 3511 | return beiscsi_mtask(task); |
| 3512 | |
| 3513 | io_task->scsi_cmnd = sc; |
| 3514 | num_sg = scsi_dma_map(sc); |
| 3515 | if (num_sg < 0) { |
| 3516 | SE_DEBUG(DBG_LVL_1, " scsi_dma_map Failed\n") |
| 3517 | return num_sg; |
| 3518 | } |
| 3519 | SE_DEBUG(DBG_LVL_4, "xferlen=0x%08x scmd=%p num_sg=%d sernum=%lu\n", |
| 3520 | (scsi_bufflen(sc)), sc, num_sg, sc->serial_number); |
| 3521 | xferlen = scsi_bufflen(sc); |
| 3522 | sg = scsi_sglist(sc); |
| 3523 | if (sc->sc_data_direction == DMA_TO_DEVICE) { |
| 3524 | writedir = 1; |
| 3525 | SE_DEBUG(DBG_LVL_4, "task->imm_count=0x%08x \n", |
| 3526 | task->imm_count); |
| 3527 | } else |
| 3528 | writedir = 0; |
| 3529 | return beiscsi_iotask(task, sg, num_sg, xferlen, writedir); |
| 3530 | } |
| 3531 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3532 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3533 | static void beiscsi_remove(struct pci_dev *pcidev) |
| 3534 | { |
| 3535 | struct beiscsi_hba *phba = NULL; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3536 | struct hwi_controller *phwi_ctrlr; |
| 3537 | struct hwi_context_memory *phwi_context; |
| 3538 | struct be_eq_obj *pbe_eq; |
| 3539 | unsigned int i, msix_vec; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3540 | |
| 3541 | phba = (struct beiscsi_hba *)pci_get_drvdata(pcidev); |
| 3542 | if (!phba) { |
| 3543 | dev_err(&pcidev->dev, "beiscsi_remove called with no phba \n"); |
| 3544 | return; |
| 3545 | } |
| 3546 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3547 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3548 | phwi_context = phwi_ctrlr->phwi_ctxt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3549 | hwi_disable_intr(phba); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3550 | if (phba->msix_enabled) { |
| 3551 | for (i = 0; i <= phba->num_cpus; i++) { |
| 3552 | msix_vec = phba->msix_entries[i].vector; |
| 3553 | free_irq(msix_vec, &phwi_context->be_eq[i]); |
| 3554 | } |
| 3555 | } else |
| 3556 | if (phba->pcidev->irq) |
| 3557 | free_irq(phba->pcidev->irq, phba); |
| 3558 | pci_disable_msix(phba->pcidev); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3559 | destroy_workqueue(phba->wq); |
| 3560 | if (blk_iopoll_enabled) |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3561 | for (i = 0; i < phba->num_cpus; i++) { |
| 3562 | pbe_eq = &phwi_context->be_eq[i]; |
| 3563 | blk_iopoll_disable(&pbe_eq->iopoll); |
| 3564 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3565 | |
| 3566 | beiscsi_clean_port(phba); |
| 3567 | beiscsi_free_mem(phba); |
| 3568 | beiscsi_unmap_pci_function(phba); |
| 3569 | pci_free_consistent(phba->pcidev, |
| 3570 | phba->ctrl.mbox_mem_alloced.size, |
| 3571 | phba->ctrl.mbox_mem_alloced.va, |
| 3572 | phba->ctrl.mbox_mem_alloced.dma); |
| 3573 | iscsi_host_remove(phba->shost); |
| 3574 | pci_dev_put(phba->pcidev); |
| 3575 | iscsi_host_free(phba->shost); |
| 3576 | } |
| 3577 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3578 | static void beiscsi_msix_enable(struct beiscsi_hba *phba) |
| 3579 | { |
| 3580 | int i, status; |
| 3581 | |
| 3582 | for (i = 0; i <= phba->num_cpus; i++) |
| 3583 | phba->msix_entries[i].entry = i; |
| 3584 | |
| 3585 | status = pci_enable_msix(phba->pcidev, phba->msix_entries, |
| 3586 | (phba->num_cpus + 1)); |
| 3587 | if (!status) |
| 3588 | phba->msix_enabled = true; |
| 3589 | |
| 3590 | return; |
| 3591 | } |
| 3592 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3593 | static int __devinit beiscsi_dev_probe(struct pci_dev *pcidev, |
| 3594 | const struct pci_device_id *id) |
| 3595 | { |
| 3596 | struct beiscsi_hba *phba = NULL; |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3597 | struct hwi_controller *phwi_ctrlr; |
| 3598 | struct hwi_context_memory *phwi_context; |
| 3599 | struct be_eq_obj *pbe_eq; |
| 3600 | int ret, msix_vec, num_cpus, i; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3601 | |
| 3602 | ret = beiscsi_enable_pci(pcidev); |
| 3603 | if (ret < 0) { |
| 3604 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3605 | "Failed to enable pci device \n"); |
| 3606 | return ret; |
| 3607 | } |
| 3608 | |
| 3609 | phba = beiscsi_hba_alloc(pcidev); |
| 3610 | if (!phba) { |
| 3611 | dev_err(&pcidev->dev, "beiscsi_dev_probe-" |
| 3612 | " Failed in beiscsi_hba_alloc \n"); |
| 3613 | goto disable_pci; |
| 3614 | } |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3615 | SE_DEBUG(DBG_LVL_8, " phba = %p \n", phba); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3616 | |
| 3617 | pci_set_drvdata(pcidev, phba); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3618 | if (enable_msix) |
| 3619 | num_cpus = find_num_cpus(); |
| 3620 | else |
| 3621 | num_cpus = 1; |
| 3622 | phba->num_cpus = num_cpus; |
| 3623 | SE_DEBUG(DBG_LVL_8, "num_cpus = %d \n", phba->num_cpus); |
| 3624 | |
| 3625 | if (enable_msix) |
| 3626 | beiscsi_msix_enable(phba); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3627 | ret = be_ctrl_init(phba, pcidev); |
| 3628 | if (ret) { |
| 3629 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3630 | "Failed in be_ctrl_init\n"); |
| 3631 | goto hba_free; |
| 3632 | } |
| 3633 | |
| 3634 | spin_lock_init(&phba->io_sgl_lock); |
| 3635 | spin_lock_init(&phba->mgmt_sgl_lock); |
| 3636 | spin_lock_init(&phba->isr_lock); |
| 3637 | beiscsi_get_params(phba); |
| 3638 | ret = beiscsi_init_port(phba); |
| 3639 | if (ret < 0) { |
| 3640 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3641 | "Failed in beiscsi_init_port\n"); |
| 3642 | goto free_port; |
| 3643 | } |
| 3644 | |
| 3645 | snprintf(phba->wq_name, sizeof(phba->wq_name), "beiscsi_q_irq%u", |
| 3646 | phba->shost->host_no); |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3647 | phba->wq = create_workqueue(phba->wq_name); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3648 | if (!phba->wq) { |
| 3649 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3650 | "Failed to allocate work queue\n"); |
| 3651 | goto free_twq; |
| 3652 | } |
| 3653 | |
| 3654 | INIT_WORK(&phba->work_cqs, beiscsi_process_all_cqs); |
| 3655 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3656 | phwi_ctrlr = phba->phwi_ctrlr; |
| 3657 | phwi_context = phwi_ctrlr->phwi_ctxt; |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3658 | if (blk_iopoll_enabled) { |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3659 | for (i = 0; i < phba->num_cpus; i++) { |
| 3660 | pbe_eq = &phwi_context->be_eq[i]; |
| 3661 | blk_iopoll_init(&pbe_eq->iopoll, be_iopoll_budget, |
| 3662 | be_iopoll); |
| 3663 | blk_iopoll_enable(&pbe_eq->iopoll); |
| 3664 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3665 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3666 | ret = beiscsi_init_irqs(phba); |
| 3667 | if (ret < 0) { |
| 3668 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3669 | "Failed to beiscsi_init_irqs\n"); |
| 3670 | goto free_blkenbld; |
| 3671 | } |
| 3672 | ret = hwi_enable_intr(phba); |
| 3673 | if (ret < 0) { |
| 3674 | shost_printk(KERN_ERR, phba->shost, "beiscsi_dev_probe-" |
| 3675 | "Failed to hwi_enable_intr\n"); |
| 3676 | goto free_ctrlr; |
| 3677 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3678 | SE_DEBUG(DBG_LVL_8, "\n\n\n SUCCESS - DRIVER LOADED \n\n\n"); |
| 3679 | return 0; |
| 3680 | |
| 3681 | free_ctrlr: |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3682 | if (phba->msix_enabled) { |
| 3683 | for (i = 0; i <= phba->num_cpus; i++) { |
| 3684 | msix_vec = phba->msix_entries[i].vector; |
| 3685 | free_irq(msix_vec, &phwi_context->be_eq[i]); |
| 3686 | } |
| 3687 | } else |
| 3688 | if (phba->pcidev->irq) |
| 3689 | free_irq(phba->pcidev->irq, phba); |
| 3690 | pci_disable_msix(phba->pcidev); |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3691 | free_blkenbld: |
| 3692 | destroy_workqueue(phba->wq); |
| 3693 | if (blk_iopoll_enabled) |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3694 | for (i = 0; i < phba->num_cpus; i++) { |
| 3695 | pbe_eq = &phwi_context->be_eq[i]; |
| 3696 | blk_iopoll_disable(&pbe_eq->iopoll); |
| 3697 | } |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3698 | free_twq: |
| 3699 | beiscsi_clean_port(phba); |
| 3700 | beiscsi_free_mem(phba); |
| 3701 | free_port: |
| 3702 | pci_free_consistent(phba->pcidev, |
| 3703 | phba->ctrl.mbox_mem_alloced.size, |
| 3704 | phba->ctrl.mbox_mem_alloced.va, |
| 3705 | phba->ctrl.mbox_mem_alloced.dma); |
| 3706 | beiscsi_unmap_pci_function(phba); |
| 3707 | hba_free: |
| 3708 | iscsi_host_remove(phba->shost); |
| 3709 | pci_dev_put(phba->pcidev); |
| 3710 | iscsi_host_free(phba->shost); |
| 3711 | disable_pci: |
| 3712 | pci_disable_device(pcidev); |
| 3713 | return ret; |
| 3714 | } |
| 3715 | |
| 3716 | struct iscsi_transport beiscsi_iscsi_transport = { |
| 3717 | .owner = THIS_MODULE, |
| 3718 | .name = DRV_NAME, |
| 3719 | .caps = CAP_RECOVERY_L0 | CAP_HDRDGST | |
| 3720 | CAP_MULTI_R2T | CAP_DATADGST | CAP_DATA_PATH_OFFLOAD, |
| 3721 | .param_mask = ISCSI_MAX_RECV_DLENGTH | |
| 3722 | ISCSI_MAX_XMIT_DLENGTH | |
| 3723 | ISCSI_HDRDGST_EN | |
| 3724 | ISCSI_DATADGST_EN | |
| 3725 | ISCSI_INITIAL_R2T_EN | |
| 3726 | ISCSI_MAX_R2T | |
| 3727 | ISCSI_IMM_DATA_EN | |
| 3728 | ISCSI_FIRST_BURST | |
| 3729 | ISCSI_MAX_BURST | |
| 3730 | ISCSI_PDU_INORDER_EN | |
| 3731 | ISCSI_DATASEQ_INORDER_EN | |
| 3732 | ISCSI_ERL | |
| 3733 | ISCSI_CONN_PORT | |
| 3734 | ISCSI_CONN_ADDRESS | |
| 3735 | ISCSI_EXP_STATSN | |
| 3736 | ISCSI_PERSISTENT_PORT | |
| 3737 | ISCSI_PERSISTENT_ADDRESS | |
| 3738 | ISCSI_TARGET_NAME | ISCSI_TPGT | |
| 3739 | ISCSI_USERNAME | ISCSI_PASSWORD | |
| 3740 | ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN | |
| 3741 | ISCSI_FAST_ABORT | ISCSI_ABORT_TMO | |
| 3742 | ISCSI_LU_RESET_TMO | |
| 3743 | ISCSI_PING_TMO | ISCSI_RECV_TMO | |
| 3744 | ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME, |
| 3745 | .host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS | |
| 3746 | ISCSI_HOST_INITIATOR_NAME, |
| 3747 | .create_session = beiscsi_session_create, |
| 3748 | .destroy_session = beiscsi_session_destroy, |
| 3749 | .create_conn = beiscsi_conn_create, |
| 3750 | .bind_conn = beiscsi_conn_bind, |
| 3751 | .destroy_conn = iscsi_conn_teardown, |
| 3752 | .set_param = beiscsi_set_param, |
| 3753 | .get_conn_param = beiscsi_conn_get_param, |
| 3754 | .get_session_param = iscsi_session_get_param, |
| 3755 | .get_host_param = beiscsi_get_host_param, |
| 3756 | .start_conn = beiscsi_conn_start, |
| 3757 | .stop_conn = beiscsi_conn_stop, |
| 3758 | .send_pdu = iscsi_conn_send_pdu, |
| 3759 | .xmit_task = beiscsi_task_xmit, |
| 3760 | .cleanup_task = beiscsi_cleanup_task, |
| 3761 | .alloc_pdu = beiscsi_alloc_pdu, |
| 3762 | .parse_pdu_itt = beiscsi_parse_pdu, |
| 3763 | .get_stats = beiscsi_conn_get_stats, |
| 3764 | .ep_connect = beiscsi_ep_connect, |
| 3765 | .ep_poll = beiscsi_ep_poll, |
| 3766 | .ep_disconnect = beiscsi_ep_disconnect, |
| 3767 | .session_recovery_timedout = iscsi_session_recovery_timedout, |
| 3768 | }; |
| 3769 | |
| 3770 | static struct pci_driver beiscsi_pci_driver = { |
| 3771 | .name = DRV_NAME, |
| 3772 | .probe = beiscsi_dev_probe, |
| 3773 | .remove = beiscsi_remove, |
| 3774 | .id_table = beiscsi_pci_id_table |
| 3775 | }; |
| 3776 | |
Jayamohan Kallickal | bfead3b | 2009-10-23 11:52:33 +0530 | [diff] [blame^] | 3777 | |
Jayamohan Kallickal | 6733b39 | 2009-09-05 07:36:35 +0530 | [diff] [blame] | 3778 | static int __init beiscsi_module_init(void) |
| 3779 | { |
| 3780 | int ret; |
| 3781 | |
| 3782 | beiscsi_scsi_transport = |
| 3783 | iscsi_register_transport(&beiscsi_iscsi_transport); |
| 3784 | if (!beiscsi_scsi_transport) { |
| 3785 | SE_DEBUG(DBG_LVL_1, |
| 3786 | "beiscsi_module_init - Unable to register beiscsi" |
| 3787 | "transport.\n"); |
| 3788 | ret = -ENOMEM; |
| 3789 | } |
| 3790 | SE_DEBUG(DBG_LVL_8, "In beiscsi_module_init, tt=%p \n", |
| 3791 | &beiscsi_iscsi_transport); |
| 3792 | |
| 3793 | ret = pci_register_driver(&beiscsi_pci_driver); |
| 3794 | if (ret) { |
| 3795 | SE_DEBUG(DBG_LVL_1, |
| 3796 | "beiscsi_module_init - Unable to register" |
| 3797 | "beiscsi pci driver.\n"); |
| 3798 | goto unregister_iscsi_transport; |
| 3799 | } |
| 3800 | return 0; |
| 3801 | |
| 3802 | unregister_iscsi_transport: |
| 3803 | iscsi_unregister_transport(&beiscsi_iscsi_transport); |
| 3804 | return ret; |
| 3805 | } |
| 3806 | |
| 3807 | static void __exit beiscsi_module_exit(void) |
| 3808 | { |
| 3809 | pci_unregister_driver(&beiscsi_pci_driver); |
| 3810 | iscsi_unregister_transport(&beiscsi_iscsi_transport); |
| 3811 | } |
| 3812 | |
| 3813 | module_init(beiscsi_module_init); |
| 3814 | module_exit(beiscsi_module_exit); |