Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2 | #ifndef TARGET_CORE_RD_H |
| 3 | #define TARGET_CORE_RD_H |
| 4 | |
Bart Van Assche | 8dcf07b | 2016-11-14 15:47:14 -0800 | [diff] [blame] | 5 | #include <linux/module.h> |
| 6 | #include <linux/types.h> |
| 7 | #include <target/target_core_base.h> |
| 8 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 9 | #define RD_HBA_VERSION "v4.0" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 10 | #define RD_MCP_VERSION "4.0" |
| 11 | |
| 12 | /* Largest piece of memory kmalloc can allocate */ |
| 13 | #define RD_MAX_ALLOCATION_SIZE 65536 |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 14 | #define RD_DEVICE_QUEUE_DEPTH 32 |
| 15 | #define RD_MAX_DEVICE_QUEUE_DEPTH 128 |
| 16 | #define RD_BLOCKSIZE 512 |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 17 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 18 | /* Used in target_core_init_configfs() for virtual LUN 0 access */ |
| 19 | int __init rd_module_init(void); |
| 20 | void rd_module_exit(void); |
| 21 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 22 | struct rd_dev_sg_table { |
| 23 | u32 page_start_offset; |
| 24 | u32 page_end_offset; |
| 25 | u32 rd_sg_count; |
| 26 | struct scatterlist *sg_table; |
| 27 | } ____cacheline_aligned; |
| 28 | |
| 29 | #define RDF_HAS_PAGE_COUNT 0x01 |
Nicholas Bellinger | 52c0742 | 2013-05-11 16:16:49 -0700 | [diff] [blame] | 30 | #define RDF_NULLIO 0x02 |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 31 | |
| 32 | struct rd_dev { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 33 | struct se_device dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 34 | u32 rd_flags; |
| 35 | /* Unique Ramdisk Device ID in Ramdisk HBA */ |
| 36 | u32 rd_dev_id; |
| 37 | /* Total page count for ramdisk device */ |
| 38 | u32 rd_page_count; |
| 39 | /* Number of SG tables in sg_table_array */ |
| 40 | u32 sg_table_count; |
Nicholas Bellinger | d7e8eb5 | 2014-01-07 23:24:14 +0000 | [diff] [blame] | 41 | /* Number of SG tables in sg_prot_array */ |
| 42 | u32 sg_prot_count; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 43 | /* Array of rd_dev_sg_table_t containing scatterlists */ |
| 44 | struct rd_dev_sg_table *sg_table_array; |
Nicholas Bellinger | d7e8eb5 | 2014-01-07 23:24:14 +0000 | [diff] [blame] | 45 | /* Array of rd_dev_sg_table containing protection scatterlists */ |
| 46 | struct rd_dev_sg_table *sg_prot_array; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 47 | /* Ramdisk HBA device is connected to */ |
| 48 | struct rd_host *rd_host; |
| 49 | } ____cacheline_aligned; |
| 50 | |
| 51 | struct rd_host { |
| 52 | u32 rd_host_dev_id_count; |
| 53 | u32 rd_host_id; /* Unique Ramdisk Host ID */ |
| 54 | } ____cacheline_aligned; |
| 55 | |
| 56 | #endif /* TARGET_CORE_RD_H */ |