1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2006 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 *******************************************************************/ 21 22 #include <linux/mempool.h> 23 #include <linux/pci.h> 24 #include <linux/interrupt.h> 25 26 #include <scsi/scsi_device.h> 27 #include <scsi/scsi_transport_fc.h> 28 29 #include <scsi/scsi.h> 30 31 #include "lpfc_hw.h" 32 #include "lpfc_sli.h" 33 #include "lpfc_disc.h" 34 #include "lpfc_scsi.h" 35 #include "lpfc.h" 36 #include "lpfc_crtn.h" 37 38 #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ 39 #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ 40 41 42 43 int 44 lpfc_mem_alloc(struct lpfc_hba * phba) 45 { 46 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 47 int longs; 48 int i; 49 50 phba->lpfc_scsi_dma_buf_pool = pci_pool_create("lpfc_scsi_dma_buf_pool", 51 phba->pcidev, phba->cfg_sg_dma_buf_size, 8, 0); 52 if (!phba->lpfc_scsi_dma_buf_pool) 53 goto fail; 54 55 phba->lpfc_mbuf_pool = pci_pool_create("lpfc_mbuf_pool", phba->pcidev, 56 LPFC_BPL_SIZE, 8,0); 57 if (!phba->lpfc_mbuf_pool) 58 goto fail_free_dma_buf_pool; 59 60 pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * 61 LPFC_MBUF_POOL_SIZE, GFP_KERNEL); 62 if (!pool->elements) 63 goto fail_free_lpfc_mbuf_pool; 64 65 pool->max_count = 0; 66 pool->current_count = 0; 67 for ( i = 0; i < LPFC_MBUF_POOL_SIZE; i++) { 68 pool->elements[i].virt = pci_pool_alloc(phba->lpfc_mbuf_pool, 69 GFP_KERNEL, &pool->elements[i].phys); 70 if (!pool->elements[i].virt) 71 goto fail_free_mbuf_pool; 72 pool->max_count++; 73 pool->current_count++; 74 } 75 76 phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, 77 sizeof(LPFC_MBOXQ_t)); 78 if (!phba->mbox_mem_pool) 79 goto fail_free_mbuf_pool; 80 81 phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, 82 sizeof(struct lpfc_nodelist)); 83 if (!phba->nlp_mem_pool) 84 goto fail_free_mbox_pool; 85 86 phba->lpfc_hbq_pool = pci_pool_create("lpfc_hbq_pool",phba->pcidev, 87 LPFC_BPL_SIZE, 8, 0); 88 if (!phba->lpfc_hbq_pool) 89 goto fail_free_nlp_mem_pool; 90 91 /* vpi zero is reserved for the physical port so add 1 to max */ 92 longs = ((phba->max_vpi + 1) + BITS_PER_LONG - 1) / BITS_PER_LONG; 93 phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), GFP_KERNEL); 94 if (!phba->vpi_bmask) 95 goto fail_free_hbq_pool; 96 97 return 0; 98 99 fail_free_hbq_pool: 100 lpfc_sli_hbqbuf_free_all(phba); 101 fail_free_nlp_mem_pool: 102 mempool_destroy(phba->nlp_mem_pool); 103 phba->nlp_mem_pool = NULL; 104 fail_free_mbox_pool: 105 mempool_destroy(phba->mbox_mem_pool); 106 phba->mbox_mem_pool = NULL; 107 fail_free_mbuf_pool: 108 while (i--) 109 pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 110 pool->elements[i].phys); 111 kfree(pool->elements); 112 fail_free_lpfc_mbuf_pool: 113 pci_pool_destroy(phba->lpfc_mbuf_pool); 114 phba->lpfc_mbuf_pool = NULL; 115 fail_free_dma_buf_pool: 116 pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); 117 phba->lpfc_scsi_dma_buf_pool = NULL; 118 fail: 119 return -ENOMEM; 120 } 121 122 void 123 lpfc_mem_free(struct lpfc_hba * phba) 124 { 125 struct lpfc_sli *psli = &phba->sli; 126 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 127 LPFC_MBOXQ_t *mbox, *next_mbox; 128 struct lpfc_dmabuf *mp; 129 int i; 130 131 kfree(phba->vpi_bmask); 132 lpfc_sli_hbqbuf_free_all(phba); 133 134 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq, list) { 135 mp = (struct lpfc_dmabuf *) (mbox->context1); 136 if (mp) { 137 lpfc_mbuf_free(phba, mp->virt, mp->phys); 138 kfree(mp); 139 } 140 list_del(&mbox->list); 141 mempool_free(mbox, phba->mbox_mem_pool); 142 } 143 list_for_each_entry_safe(mbox, next_mbox, &psli->mboxq_cmpl, list) { 144 mp = (struct lpfc_dmabuf *) (mbox->context1); 145 if (mp) { 146 lpfc_mbuf_free(phba, mp->virt, mp->phys); 147 kfree(mp); 148 } 149 list_del(&mbox->list); 150 mempool_free(mbox, phba->mbox_mem_pool); 151 } 152 153 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; 154 if (psli->mbox_active) { 155 mbox = psli->mbox_active; 156 mp = (struct lpfc_dmabuf *) (mbox->context1); 157 if (mp) { 158 lpfc_mbuf_free(phba, mp->virt, mp->phys); 159 kfree(mp); 160 } 161 mempool_free(mbox, phba->mbox_mem_pool); 162 psli->mbox_active = NULL; 163 } 164 165 for (i = 0; i < pool->current_count; i++) 166 pci_pool_free(phba->lpfc_mbuf_pool, pool->elements[i].virt, 167 pool->elements[i].phys); 168 kfree(pool->elements); 169 170 pci_pool_destroy(phba->lpfc_hbq_pool); 171 mempool_destroy(phba->nlp_mem_pool); 172 mempool_destroy(phba->mbox_mem_pool); 173 174 pci_pool_destroy(phba->lpfc_scsi_dma_buf_pool); 175 pci_pool_destroy(phba->lpfc_mbuf_pool); 176 177 phba->lpfc_hbq_pool = NULL; 178 phba->nlp_mem_pool = NULL; 179 phba->mbox_mem_pool = NULL; 180 phba->lpfc_scsi_dma_buf_pool = NULL; 181 phba->lpfc_mbuf_pool = NULL; 182 183 /* Free the iocb lookup array */ 184 kfree(psli->iocbq_lookup); 185 psli->iocbq_lookup = NULL; 186 187 } 188 189 void * 190 lpfc_mbuf_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 191 { 192 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 193 unsigned long iflags; 194 void *ret; 195 196 ret = pci_pool_alloc(phba->lpfc_mbuf_pool, GFP_KERNEL, handle); 197 198 spin_lock_irqsave(&phba->hbalock, iflags); 199 if (!ret && (mem_flags & MEM_PRI) && pool->current_count) { 200 pool->current_count--; 201 ret = pool->elements[pool->current_count].virt; 202 *handle = pool->elements[pool->current_count].phys; 203 } 204 spin_unlock_irqrestore(&phba->hbalock, iflags); 205 return ret; 206 } 207 208 void 209 __lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 210 { 211 struct lpfc_dma_pool *pool = &phba->lpfc_mbuf_safety_pool; 212 213 if (pool->current_count < pool->max_count) { 214 pool->elements[pool->current_count].virt = virt; 215 pool->elements[pool->current_count].phys = dma; 216 pool->current_count++; 217 } else { 218 pci_pool_free(phba->lpfc_mbuf_pool, virt, dma); 219 } 220 return; 221 } 222 223 void 224 lpfc_mbuf_free(struct lpfc_hba * phba, void *virt, dma_addr_t dma) 225 { 226 unsigned long iflags; 227 228 spin_lock_irqsave(&phba->hbalock, iflags); 229 __lpfc_mbuf_free(phba, virt, dma); 230 spin_unlock_irqrestore(&phba->hbalock, iflags); 231 return; 232 } 233 234 void * 235 lpfc_hbq_alloc(struct lpfc_hba *phba, int mem_flags, dma_addr_t *handle) 236 { 237 void *ret; 238 ret = pci_pool_alloc(phba->lpfc_hbq_pool, GFP_ATOMIC, handle); 239 return ret; 240 } 241 242 void 243 lpfc_hbq_free(struct lpfc_hba *phba, void *virt, dma_addr_t dma) 244 { 245 pci_pool_free(phba->lpfc_hbq_pool, virt, dma); 246 return; 247 } 248 249 void 250 lpfc_in_buf_free(struct lpfc_hba *phba, struct lpfc_dmabuf *mp) 251 { 252 struct hbq_dmabuf *hbq_entry; 253 254 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { 255 hbq_entry = container_of(mp, struct hbq_dmabuf, dbuf); 256 if (hbq_entry->tag == -1) { 257 lpfc_hbq_free(phba, hbq_entry->dbuf.virt, 258 hbq_entry->dbuf.phys); 259 kfree(hbq_entry); 260 } else { 261 lpfc_sli_free_hbq(phba, hbq_entry); 262 } 263 } else { 264 lpfc_mbuf_free(phba, mp->virt, mp->phys); 265 kfree(mp); 266 } 267 return; 268 } 269 270