79cb1819e2
This patch makes expanders appear as labelled objects with properties in the SAS tree. I've also modified the phy code to make expander phys appear labelled by host number, expander number and phy index. So, for my current config, you see something like this in sysfs: /sys/class/scsi_host/host1/device/phy-1:4/expander-1:0/phy-1-0:12/rphy-1:0-12/target1:0:1 And the expander properties are: jejb@sparkweed> cd /sys/class/sas_expander/expander-1\:0/ jejb@sparkweed> for f in *; do echo -n $f ": "; cat $f; done component_id : 29024 component_revision_id : 4 component_vendor_id : VITESSE device : cat: device: Is a directory level : 0 product_id : VSC7160 Eval Brd product_rev : 4 uevent : cat: uevent: Permission denied vendor_id : VITESSE Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
172 lines
4.5 KiB
C
172 lines
4.5 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)
|
|
|
|
struct sas_expander_device {
|
|
int level;
|
|
|
|
#define SAS_EXPANDER_VENDOR_ID_LEN 8
|
|
char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1];
|
|
#define SAS_EXPANDER_PRODUCT_ID_LEN 16
|
|
char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1];
|
|
#define SAS_EXPANDER_PRODUCT_REV_LEN 4
|
|
char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1];
|
|
#define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8
|
|
char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1];
|
|
u16 component_id;
|
|
u8 component_revision_id;
|
|
|
|
struct sas_rphy rphy;
|
|
|
|
};
|
|
#define rphy_to_expander_device(r) \
|
|
container_of((r), struct sas_expander_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 *);
|
|
extern struct sas_rphy *sas_expander_alloc(struct sas_phy *, enum sas_device_type);
|
|
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 *);
|
|
|
|
static inline int
|
|
scsi_is_sas_expander_device(struct device *dev)
|
|
{
|
|
struct sas_rphy *rphy;
|
|
if (!scsi_is_sas_rphy(dev))
|
|
return 0;
|
|
rphy = dev_to_rphy(dev);
|
|
return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE ||
|
|
rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE;
|
|
}
|
|
|
|
#endif /* SCSI_TRANSPORT_SAS_H */
|