mirror of https://gitee.com/openkylin/linux.git
127 lines
2.4 KiB
C
127 lines
2.4 KiB
C
#ifndef __LIBSRP_H__
|
|
#define __LIBSRP_H__
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/kfifo.h>
|
|
#include <scsi/srp.h>
|
|
|
|
enum srp_valid {
|
|
INVALIDATE_CMD_RESP_EL = 0,
|
|
VALID_CMD_RESP_EL = 0x80,
|
|
VALID_INIT_MSG = 0xC0,
|
|
VALID_TRANS_EVENT = 0xFF
|
|
};
|
|
|
|
enum srp_format {
|
|
SRP_FORMAT = 1,
|
|
MAD_FORMAT = 2,
|
|
OS400_FORMAT = 3,
|
|
AIX_FORMAT = 4,
|
|
LINUX_FORMAT = 5,
|
|
MESSAGE_IN_CRQ = 6
|
|
};
|
|
|
|
enum srp_init_msg {
|
|
INIT_MSG = 1,
|
|
INIT_COMPLETE_MSG = 2
|
|
};
|
|
|
|
enum srp_trans_event {
|
|
UNUSED_FORMAT = 0,
|
|
PARTNER_FAILED = 1,
|
|
PARTNER_DEREGISTER = 2,
|
|
MIGRATED = 6,
|
|
PREPARE_FOR_SUSPEND = 9,
|
|
RESUME_FROM_SUSP = 0xA
|
|
};
|
|
|
|
enum srp_status {
|
|
CRQ_ENTRY_OVERWRITTEN = 0x20,
|
|
HEADER_DESCRIPTOR = 0xF1,
|
|
PING = 0xF5,
|
|
PING_RESPONSE = 0xF6
|
|
};
|
|
|
|
enum srp_mad_version {
|
|
MAD_VERSION_1 = 1
|
|
};
|
|
|
|
enum srp_os_type {
|
|
OS400 = 1,
|
|
LINUX = 2,
|
|
AIX = 3,
|
|
OFW = 4
|
|
};
|
|
|
|
enum srp_task_attributes {
|
|
SRP_SIMPLE_TASK = 0,
|
|
SRP_HEAD_TASK = 1,
|
|
SRP_ORDERED_TASK = 2,
|
|
SRP_ACA_TASK = 4
|
|
};
|
|
|
|
enum {
|
|
SRP_TASK_MANAGEMENT_FUNCTION_COMPLETE = 0,
|
|
SRP_REQUEST_FIELDS_INVALID = 2,
|
|
SRP_TASK_MANAGEMENT_FUNCTION_NOT_SUPPORTED = 4,
|
|
SRP_TASK_MANAGEMENT_FUNCTION_FAILED = 5
|
|
};
|
|
|
|
struct srp_buf {
|
|
dma_addr_t dma;
|
|
void *buf;
|
|
};
|
|
|
|
struct srp_queue {
|
|
void *pool;
|
|
void *items;
|
|
struct kfifo queue;
|
|
spinlock_t lock;
|
|
};
|
|
|
|
struct srp_target {
|
|
struct device *dev;
|
|
|
|
spinlock_t lock;
|
|
struct list_head cmd_queue;
|
|
|
|
size_t srp_iu_size;
|
|
struct srp_queue iu_queue;
|
|
size_t rx_ring_size;
|
|
struct srp_buf **rx_ring;
|
|
|
|
void *ldata;
|
|
};
|
|
|
|
struct iu_entry {
|
|
struct srp_target *target;
|
|
|
|
struct list_head ilist;
|
|
dma_addr_t remote_token;
|
|
unsigned long flags;
|
|
|
|
struct srp_buf *sbuf;
|
|
u16 iu_len;
|
|
};
|
|
|
|
struct ibmvscsis_cmd;
|
|
|
|
typedef int (srp_rdma_t)(struct ibmvscsis_cmd *, struct scatterlist *, int,
|
|
struct srp_direct_buf *, int,
|
|
enum dma_data_direction, unsigned int);
|
|
int srp_target_alloc(struct srp_target *, struct device *, size_t, size_t);
|
|
void srp_target_free(struct srp_target *);
|
|
struct iu_entry *srp_iu_get(struct srp_target *);
|
|
void srp_iu_put(struct iu_entry *);
|
|
int srp_transfer_data(struct ibmvscsis_cmd *, struct srp_cmd *,
|
|
srp_rdma_t, int, int);
|
|
u64 srp_data_length(struct srp_cmd *cmd, enum dma_data_direction dir);
|
|
int srp_get_desc_table(struct srp_cmd *srp_cmd, enum dma_data_direction *dir,
|
|
u64 *data_len);
|
|
static inline int srp_cmd_direction(struct srp_cmd *cmd)
|
|
{
|
|
return (cmd->buf_fmt >> 4) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
|
|
}
|
|
|
|
#endif
|