1 #ifndef SCSI_TRANSPORT_SAS_H 2 #define SCSI_TRANSPORT_SAS_H 3 4 #include <linux/transport_class.h> 5 #include <linux/types.h> 6 7 struct scsi_transport_template; 8 struct sas_rphy; 9 10 11 enum sas_device_type { 12 SAS_PHY_UNUSED, 13 SAS_END_DEVICE, 14 SAS_EDGE_EXPANDER_DEVICE, 15 SAS_FANOUT_EXPANDER_DEVICE, 16 }; 17 18 enum sas_protocol { 19 SAS_PROTOCOL_SATA = 0x01, 20 SAS_PROTOCOL_SMP = 0x02, 21 SAS_PROTOCOL_STP = 0x04, 22 SAS_PROTOCOL_SSP = 0x08, 23 }; 24 25 enum sas_linkrate { 26 SAS_LINK_RATE_UNKNOWN, 27 SAS_PHY_DISABLED, 28 SAS_LINK_RATE_FAILED, 29 SAS_SATA_SPINUP_HOLD, 30 SAS_SATA_PORT_SELECTOR, 31 SAS_LINK_RATE_1_5_GBPS, 32 SAS_LINK_RATE_3_0_GBPS, 33 SAS_LINK_VIRTUAL, 34 }; 35 36 struct sas_identify { 37 enum sas_device_type device_type; 38 enum sas_protocol initiator_port_protocols; 39 enum sas_protocol target_port_protocols; 40 u64 sas_address; 41 u8 phy_identifier; 42 }; 43 44 struct sas_phy { 45 struct device dev; 46 int number; 47 48 /* phy identification */ 49 struct sas_identify identify; 50 51 /* phy attributes */ 52 enum sas_linkrate negotiated_linkrate; 53 enum sas_linkrate minimum_linkrate_hw; 54 enum sas_linkrate minimum_linkrate; 55 enum sas_linkrate maximum_linkrate_hw; 56 enum sas_linkrate maximum_linkrate; 57 u8 port_identifier; 58 59 /* internal state */ 60 unsigned int local_attached : 1; 61 62 /* link error statistics */ 63 u32 invalid_dword_count; 64 u32 running_disparity_error_count; 65 u32 loss_of_dword_sync_count; 66 u32 phy_reset_problem_count; 67 68 /* the other end of the link */ 69 struct sas_rphy *rphy; 70 }; 71 72 #define dev_to_phy(d) \ 73 container_of((d), struct sas_phy, dev) 74 #define transport_class_to_phy(cdev) \ 75 dev_to_phy((cdev)->dev) 76 #define phy_to_shost(phy) \ 77 dev_to_shost((phy)->dev.parent) 78 79 struct sas_rphy { 80 struct device dev; 81 struct sas_identify identify; 82 struct list_head list; 83 u32 scsi_target_id; 84 }; 85 86 #define dev_to_rphy(d) \ 87 container_of((d), struct sas_rphy, dev) 88 #define transport_class_to_rphy(cdev) \ 89 dev_to_rphy((cdev)->dev) 90 #define rphy_to_shost(rphy) \ 91 dev_to_shost((rphy)->dev.parent) 92 93 94 /* The functions by which the transport class and the driver communicate */ 95 struct sas_function_template { 96 int (*get_linkerrors)(struct sas_phy *); 97 int (*phy_reset)(struct sas_phy *, int); 98 }; 99 100 101 extern void sas_remove_host(struct Scsi_Host *); 102 103 extern struct sas_phy *sas_phy_alloc(struct device *, int); 104 extern void sas_phy_free(struct sas_phy *); 105 extern int sas_phy_add(struct sas_phy *); 106 extern void sas_phy_delete(struct sas_phy *); 107 extern int scsi_is_sas_phy(const struct device *); 108 109 extern struct sas_rphy *sas_rphy_alloc(struct sas_phy *); 110 void sas_rphy_free(struct sas_rphy *); 111 extern int sas_rphy_add(struct sas_rphy *); 112 extern void sas_rphy_delete(struct sas_rphy *); 113 extern int scsi_is_sas_rphy(const struct device *); 114 115 extern struct scsi_transport_template * 116 sas_attach_transport(struct sas_function_template *); 117 extern void sas_release_transport(struct scsi_transport_template *); 118 119 #endif /* SCSI_TRANSPORT_SAS_H */ 120