mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
42ab03609c
Begin introducing the concept of sas remote devices that have an rphy embedded. The first one (this) is a simple end device. All that an end device really does is have port mode page parameters contained. The next and more complex piece will be expander remote devices. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
#ifndef SCSI_TRANSPORT_SAS_H
|
|
#define SCSI_TRANSPORT_SAS_H
|
|
|
|
#include <linux/transport_class.h>
|
|
#include <linux/types.h>
|
|
|
|
struct scsi_transport_template;
|
|
struct sas_rphy;
|
|
|
|
|
|
enum sas_device_type {
|
|
SAS_PHY_UNUSED,
|
|
SAS_END_DEVICE,
|
|
SAS_EDGE_EXPANDER_DEVICE,
|
|
SAS_FANOUT_EXPANDER_DEVICE,
|
|
};
|
|
|
|
enum sas_protocol {
|
|
SAS_PROTOCOL_SATA = 0x01,
|
|
SAS_PROTOCOL_SMP = 0x02,
|
|
SAS_PROTOCOL_STP = 0x04,
|
|
SAS_PROTOCOL_SSP = 0x08,
|
|
};
|
|
|
|
enum sas_linkrate {
|
|
SAS_LINK_RATE_UNKNOWN,
|
|
SAS_PHY_DISABLED,
|
|
SAS_LINK_RATE_FAILED,
|
|
SAS_SATA_SPINUP_HOLD,
|
|
SAS_SATA_PORT_SELECTOR,
|
|
SAS_LINK_RATE_1_5_GBPS,
|
|
SAS_LINK_RATE_3_0_GBPS,
|
|
SAS_LINK_RATE_6_0_GBPS,
|
|
SAS_LINK_VIRTUAL,
|
|
};
|
|
|
|
struct sas_identify {
|
|
enum sas_device_type device_type;
|
|
enum sas_protocol initiator_port_protocols;
|
|
enum sas_protocol target_port_protocols;
|
|
u64 sas_address;
|
|
u8 phy_identifier;
|
|
};
|
|
|
|
struct sas_phy {
|
|
struct device dev;
|
|
int number;
|
|
|
|
/* phy identification */
|
|
struct sas_identify identify;
|
|
|
|
/* phy attributes */
|
|
enum sas_linkrate negotiated_linkrate;
|
|
enum sas_linkrate minimum_linkrate_hw;
|
|
enum sas_linkrate minimum_linkrate;
|
|
enum sas_linkrate maximum_linkrate_hw;
|
|
enum sas_linkrate maximum_linkrate;
|
|
u8 port_identifier;
|
|
|
|
/* internal state */
|
|
unsigned int local_attached : 1;
|
|
|
|
/* link error statistics */
|
|
u32 invalid_dword_count;
|
|
u32 running_disparity_error_count;
|
|
u32 loss_of_dword_sync_count;
|
|
u32 phy_reset_problem_count;
|
|
|
|
/* the other end of the link */
|
|
struct sas_rphy *rphy;
|
|
};
|
|
|
|
#define dev_to_phy(d) \
|
|
container_of((d), struct sas_phy, dev)
|
|
#define transport_class_to_phy(cdev) \
|
|
dev_to_phy((cdev)->dev)
|
|
#define phy_to_shost(phy) \
|
|
dev_to_shost((phy)->dev.parent)
|
|
|
|
struct sas_rphy {
|
|
struct device dev;
|
|
struct sas_identify identify;
|
|
struct list_head list;
|
|
u32 scsi_target_id;
|
|
/* temporary expedient: mark the rphy as being contained
|
|
* within a type specific rphy
|
|
* FIXME: pull this out when everything uses the containers */
|
|
unsigned contained:1;
|
|
};
|
|
|
|
#define dev_to_rphy(d) \
|
|
container_of((d), struct sas_rphy, dev)
|
|
#define transport_class_to_rphy(cdev) \
|
|
dev_to_rphy((cdev)->dev)
|
|
#define rphy_to_shost(rphy) \
|
|
dev_to_shost((rphy)->dev.parent)
|
|
#define target_to_rphy(targ) \
|
|
dev_to_rphy((targ)->dev.parent)
|
|
|
|
struct sas_end_device {
|
|
struct sas_rphy rphy;
|
|
/* flags */
|
|
unsigned ready_led_meaning:1;
|
|
/* parameters */
|
|
u16 I_T_nexus_loss_timeout;
|
|
u16 initiator_response_timeout;
|
|
};
|
|
#define rphy_to_end_device(r) \
|
|
container_of((r), struct sas_end_device, rphy)
|
|
|
|
|
|
/* The functions by which the transport class and the driver communicate */
|
|
struct sas_function_template {
|
|
int (*get_linkerrors)(struct sas_phy *);
|
|
int (*get_enclosure_identifier)(struct sas_rphy *, u64 *);
|
|
int (*get_bay_identifier)(struct sas_rphy *);
|
|
int (*phy_reset)(struct sas_phy *, int);
|
|
};
|
|
|
|
|
|
extern void sas_remove_host(struct Scsi_Host *);
|
|
|
|
extern struct sas_phy *sas_phy_alloc(struct device *, int);
|
|
extern void sas_phy_free(struct sas_phy *);
|
|
extern int sas_phy_add(struct sas_phy *);
|
|
extern void sas_phy_delete(struct sas_phy *);
|
|
extern int scsi_is_sas_phy(const struct device *);
|
|
|
|
extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
|
|
extern struct sas_rphy *sas_end_device_alloc(struct sas_phy *);
|
|
void sas_rphy_free(struct sas_rphy *);
|
|
extern int sas_rphy_add(struct sas_rphy *);
|
|
extern void sas_rphy_delete(struct sas_rphy *);
|
|
extern int scsi_is_sas_rphy(const struct device *);
|
|
|
|
extern struct scsi_transport_template *
|
|
sas_attach_transport(struct sas_function_template *);
|
|
extern void sas_release_transport(struct scsi_transport_template *);
|
|
int sas_read_port_mode_page(struct scsi_device *);
|
|
|
|
#endif /* SCSI_TRANSPORT_SAS_H */
|