[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / drivers / target / target_core_rd.h

#ifndef TARGET_CORE_RD_H
#define TARGET_CORE_RD_H

#define RD_HBA_VERSION		"v4.0"
#define RD_DR_VERSION		"4.0"
#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
#define RD_MAX_SECTORS		1024

/* Used in target_core_init_configfs() for virtual LUN 0 access */
int __init rd_module_init(void);
void rd_module_exit(void);

#define RRF_EMULATE_CDB		0x01
#define RRF_GOT_LBA		0x02

struct rd_request {
	struct se_task	rd_task;

	/* Offset from start of page */
	u32		rd_offset;
	/* Starting page in Ramdisk for request */
	u32		rd_page;
	/* Total number of pages needed for request */
	u32		rd_page_count;
	/* Scatterlist count */
	u32		rd_size;
} ____cacheline_aligned;

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

struct rd_dev {
	int		rd_direct;
	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;
	u32		rd_queue_depth;
	/* Array of rd_dev_sg_table_t containing scatterlists */
	struct rd_dev_sg_table *sg_table_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 */
Commit	Line	Data
c66ac9db NB	1	#ifndef TARGET_CORE_RD_H
	2	#define TARGET_CORE_RD_H
	3
	4	#define RD_HBA_VERSION "v4.0"
	5	#define RD_DR_VERSION "4.0"
	6	#define RD_MCP_VERSION "4.0"
	7
	8	/* Largest piece of memory kmalloc can allocate */
	9	#define RD_MAX_ALLOCATION_SIZE 65536
c66ac9db NB	10	#define RD_DEVICE_QUEUE_DEPTH 32
	11	#define RD_MAX_DEVICE_QUEUE_DEPTH 128
	12	#define RD_BLOCKSIZE 512
	13	#define RD_MAX_SECTORS 1024
	14
c66ac9db NB	15	/* Used in target_core_init_configfs() for virtual LUN 0 access */
	16	int __init rd_module_init(void);
	17	void rd_module_exit(void);
	18
	19	#define RRF_EMULATE_CDB 0x01
	20	#define RRF_GOT_LBA 0x02
	21
	22	struct rd_request {
	23	struct se_task rd_task;
	24
c66ac9db NB	25	/* Offset from start of page */
	26	u32 rd_offset;
	27	/* Starting page in Ramdisk for request */
	28	u32 rd_page;
	29	/* Total number of pages needed for request */
	30	u32 rd_page_count;
	31	/* Scatterlist count */
	32	u32 rd_size;
c66ac9db NB	33	} ____cacheline_aligned;
	34
	35	struct rd_dev_sg_table {
	36	u32 page_start_offset;
	37	u32 page_end_offset;
	38	u32 rd_sg_count;
	39	struct scatterlist *sg_table;
	40	} ____cacheline_aligned;
	41
	42	#define RDF_HAS_PAGE_COUNT 0x01
	43
	44	struct rd_dev {
	45	int rd_direct;
	46	u32 rd_flags;
	47	/* Unique Ramdisk Device ID in Ramdisk HBA */
	48	u32 rd_dev_id;
	49	/* Total page count for ramdisk device */
	50	u32 rd_page_count;
	51	/* Number of SG tables in sg_table_array */
	52	u32 sg_table_count;
	53	u32 rd_queue_depth;
	54	/* Array of rd_dev_sg_table_t containing scatterlists */
	55	struct rd_dev_sg_table *sg_table_array;
	56	/* Ramdisk HBA device is connected to */
	57	struct rd_host *rd_host;
	58	} ____cacheline_aligned;
	59
	60	struct rd_host {
	61	u32 rd_host_dev_id_count;
	62	u32 rd_host_id; /* Unique Ramdisk Host ID */
	63	} ____cacheline_aligned;
	64
	65	#endif /* TARGET_CORE_RD_H */