ac01bbbd3b
Add a flag to mark a PHY as attached to the HBA as opposed to beeing on an expander. This is needed because various features are only supported on those. This is a crude hack, the proper fix would be to use different classes for host-attached vs expander phys. I'm looking into that. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
#ifndef SCSI_TRANSPORT_SAS_H
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#define SCSI_TRANSPORT_SAS_H
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#include <linux/transport_class.h>
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#include <linux/types.h>
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struct scsi_transport_template;
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struct sas_rphy;
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enum sas_device_type {
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SAS_PHY_UNUSED,
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SAS_END_DEVICE,
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SAS_EDGE_EXPANDER_DEVICE,
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SAS_FANOUT_EXPANDER_DEVICE,
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};
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enum sas_protocol {
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SAS_PROTOCOL_SATA = 0x01,
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SAS_PROTOCOL_SMP = 0x02,
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SAS_PROTOCOL_STP = 0x04,
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SAS_PROTOCOL_SSP = 0x08,
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};
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enum sas_linkrate {
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SAS_LINK_RATE_UNKNOWN,
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SAS_PHY_DISABLED,
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SAS_LINK_RATE_FAILED,
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SAS_SATA_SPINUP_HOLD,
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SAS_SATA_PORT_SELECTOR,
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SAS_LINK_RATE_1_5_GBPS,
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SAS_LINK_RATE_3_0_GBPS,
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SAS_LINK_VIRTUAL,
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};
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struct sas_identify {
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enum sas_device_type device_type;
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enum sas_protocol initiator_port_protocols;
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enum sas_protocol target_port_protocols;
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u64 sas_address;
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u8 phy_identifier;
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};
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struct sas_phy {
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struct device dev;
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int number;
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/* phy identification */
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struct sas_identify identify;
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/* phy attributes */
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enum sas_linkrate negotiated_linkrate;
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enum sas_linkrate minimum_linkrate_hw;
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enum sas_linkrate minimum_linkrate;
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enum sas_linkrate maximum_linkrate_hw;
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enum sas_linkrate maximum_linkrate;
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u8 port_identifier;
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/* internal state */
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unsigned int local_attached : 1;
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/* link error statistics */
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u32 invalid_dword_count;
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u32 running_disparity_error_count;
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u32 loss_of_dword_sync_count;
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u32 phy_reset_problem_count;
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/* the other end of the link */
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struct sas_rphy *rphy;
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};
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#define dev_to_phy(d) \
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container_of((d), struct sas_phy, dev)
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#define transport_class_to_phy(cdev) \
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dev_to_phy((cdev)->dev)
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#define phy_to_shost(phy) \
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dev_to_shost((phy)->dev.parent)
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struct sas_rphy {
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struct device dev;
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struct sas_identify identify;
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struct list_head list;
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u32 scsi_target_id;
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};
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#define dev_to_rphy(d) \
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container_of((d), struct sas_rphy, dev)
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#define transport_class_to_rphy(cdev) \
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dev_to_rphy((cdev)->dev)
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#define rphy_to_shost(rphy) \
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dev_to_shost((rphy)->dev.parent)
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/* The functions by which the transport class and the driver communicate */
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struct sas_function_template {
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int (*get_linkerrors)(struct sas_phy *);
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};
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extern void sas_remove_host(struct Scsi_Host *);
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extern struct sas_phy *sas_phy_alloc(struct device *, int);
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extern void sas_phy_free(struct sas_phy *);
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extern int sas_phy_add(struct sas_phy *);
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extern void sas_phy_delete(struct sas_phy *);
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extern int scsi_is_sas_phy(const struct device *);
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extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *);
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void sas_rphy_free(struct sas_rphy *);
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extern int sas_rphy_add(struct sas_rphy *);
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extern void sas_rphy_delete(struct sas_rphy *);
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extern int scsi_is_sas_rphy(const struct device *);
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extern struct scsi_transport_template *
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sas_attach_transport(struct sas_function_template *);
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extern void sas_release_transport(struct scsi_transport_template *);
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#endif /* SCSI_TRANSPORT_SAS_H */
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