1 /* 2 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 * 5 * This program is free software; you may redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; version 2 of the License. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 16 * SOFTWARE. 17 */ 18 #ifndef _FNIC_IO_H_ 19 #define _FNIC_IO_H_ 20 21 #include <scsi/fc/fc_fcp.h> 22 23 #define FNIC_DFLT_SG_DESC_CNT 32 24 #define FNIC_MAX_SG_DESC_CNT 256 /* Maximum descriptors per sgl */ 25 #define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */ 26 27 struct host_sg_desc { 28 __le64 addr; 29 __le32 len; 30 u32 _resvd; 31 }; 32 33 struct fnic_dflt_sgl_list { 34 struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT]; 35 }; 36 37 struct fnic_sgl_list { 38 struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT]; 39 }; 40 41 enum fnic_sgl_list_type { 42 FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */ 43 FNIC_SGL_CACHE_MAX, /* cache with max size sgl */ 44 FNIC_SGL_NUM_CACHES /* number of sgl caches */ 45 }; 46 47 enum fnic_ioreq_state { 48 FNIC_IOREQ_NOT_INITED = 0, 49 FNIC_IOREQ_CMD_PENDING, 50 FNIC_IOREQ_ABTS_PENDING, 51 FNIC_IOREQ_ABTS_COMPLETE, 52 FNIC_IOREQ_CMD_COMPLETE, 53 }; 54 55 struct fnic_io_req { 56 struct host_sg_desc *sgl_list; /* sgl list */ 57 void *sgl_list_alloc; /* sgl list address used for free */ 58 dma_addr_t sense_buf_pa; /* dma address for sense buffer*/ 59 dma_addr_t sgl_list_pa; /* dma address for sgl list */ 60 u16 sgl_cnt; 61 u8 sgl_type; /* device DMA descriptor list type */ 62 u8 io_completed:1; /* set to 1 when fw completes IO */ 63 u32 port_id; /* remote port DID */ 64 unsigned long start_time; /* in jiffies */ 65 struct completion *abts_done; /* completion for abts */ 66 struct completion *dr_done; /* completion for device reset */ 67 }; 68 69 #endif /* _FNIC_IO_H_ */ 70