mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 22:53:55 +08:00
d7e8eb5d92
This patch adds rd_build_prot_space() + rd_release_prot_space() logic to setup + release protection information scatterlists. It also adds rd_init_prot() + rd_free_prot() se_subsystem_api callbacks used by target core code for setup + release of protection information. v2 changes: - Drop unused sg_table from rd_release_prot_space (Wei) - Drop rd_release_prot_space call from rd_free_device Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#ifndef TARGET_CORE_RD_H
|
|
#define TARGET_CORE_RD_H
|
|
|
|
#define RD_HBA_VERSION "v4.0"
|
|
#define RD_MCP_VERSION "4.0"
|
|
|
|
/* Largest piece of memory kmalloc can allocate */
|
|
#define RD_MAX_ALLOCATION_SIZE 65536
|
|
#define RD_DEVICE_QUEUE_DEPTH 32
|
|
#define RD_MAX_DEVICE_QUEUE_DEPTH 128
|
|
#define RD_BLOCKSIZE 512
|
|
|
|
/* Used in target_core_init_configfs() for virtual LUN 0 access */
|
|
int __init rd_module_init(void);
|
|
void rd_module_exit(void);
|
|
|
|
struct rd_dev_sg_table {
|
|
u32 page_start_offset;
|
|
u32 page_end_offset;
|
|
u32 rd_sg_count;
|
|
struct scatterlist *sg_table;
|
|
} ____cacheline_aligned;
|
|
|
|
#define RDF_HAS_PAGE_COUNT 0x01
|
|
#define RDF_NULLIO 0x02
|
|
|
|
struct rd_dev {
|
|
struct se_device dev;
|
|
u32 rd_flags;
|
|
/* Unique Ramdisk Device ID in Ramdisk HBA */
|
|
u32 rd_dev_id;
|
|
/* Total page count for ramdisk device */
|
|
u32 rd_page_count;
|
|
/* Number of SG tables in sg_table_array */
|
|
u32 sg_table_count;
|
|
/* Number of SG tables in sg_prot_array */
|
|
u32 sg_prot_count;
|
|
/* Array of rd_dev_sg_table_t containing scatterlists */
|
|
struct rd_dev_sg_table *sg_table_array;
|
|
/* Array of rd_dev_sg_table containing protection scatterlists */
|
|
struct rd_dev_sg_table *sg_prot_array;
|
|
/* Ramdisk HBA device is connected to */
|
|
struct rd_host *rd_host;
|
|
} ____cacheline_aligned;
|
|
|
|
struct rd_host {
|
|
u32 rd_host_dev_id_count;
|
|
u32 rd_host_id; /* Unique Ramdisk Host ID */
|
|
} ____cacheline_aligned;
|
|
|
|
#endif /* TARGET_CORE_RD_H */
|