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_RATE_6_0_GBPS, 34 SAS_LINK_VIRTUAL, 35 }; 36 37 struct sas_identify { 38 enum sas_device_type device_type; 39 enum sas_protocol initiator_port_protocols; 40 enum sas_protocol target_port_protocols; 41 u64 sas_address; 42 u8 phy_identifier; 43 }; 44 45 struct sas_phy { 46 struct device dev; 47 int number; 48 49 /* phy identification */ 50 struct sas_identify identify; 51 52 /* phy attributes */ 53 enum sas_linkrate negotiated_linkrate; 54 enum sas_linkrate minimum_linkrate_hw; 55 enum sas_linkrate minimum_linkrate; 56 enum sas_linkrate maximum_linkrate_hw; 57 enum sas_linkrate maximum_linkrate; 58 u8 port_identifier; 59 60 /* internal state */ 61 unsigned int local_attached : 1; 62 63 /* link error statistics */ 64 u32 invalid_dword_count; 65 u32 running_disparity_error_count; 66 u32 loss_of_dword_sync_count; 67 u32 phy_reset_problem_count; 68 69 /* the other end of the link */ 70 struct sas_rphy *rphy; 71 }; 72 73 #define dev_to_phy(d) \ 74 container_of((d), struct sas_phy, dev) 75 #define transport_class_to_phy(cdev) \ 76 dev_to_phy((cdev)->dev) 77 #define phy_to_shost(phy) \ 78 dev_to_shost((phy)->dev.parent) 79 80 struct sas_rphy { 81 struct device dev; 82 struct sas_identify identify; 83 struct list_head list; 84 u32 scsi_target_id; 85 }; 86 87 #define dev_to_rphy(d) \ 88 container_of((d), struct sas_rphy, dev) 89 #define transport_class_to_rphy(cdev) \ 90 dev_to_rphy((cdev)->dev) 91 #define rphy_to_shost(rphy) \ 92 dev_to_shost((rphy)->dev.parent) 93 #define target_to_rphy(targ) \ 94 dev_to_rphy((targ)->dev.parent) 95 96 struct sas_end_device { 97 struct sas_rphy rphy; 98 /* flags */ 99 unsigned ready_led_meaning:1; 100 /* parameters */ 101 u16 I_T_nexus_loss_timeout; 102 u16 initiator_response_timeout; 103 }; 104 #define rphy_to_end_device(r) \ 105 container_of((r), struct sas_end_device, rphy) 106 107 struct sas_expander_device { 108 int level; 109 110 #define SAS_EXPANDER_VENDOR_ID_LEN 8 111 char vendor_id[SAS_EXPANDER_VENDOR_ID_LEN+1]; 112 #define SAS_EXPANDER_PRODUCT_ID_LEN 16 113 char product_id[SAS_EXPANDER_PRODUCT_ID_LEN+1]; 114 #define SAS_EXPANDER_PRODUCT_REV_LEN 4 115 char product_rev[SAS_EXPANDER_PRODUCT_REV_LEN+1]; 116 #define SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN 8 117 char component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN+1]; 118 u16 component_id; 119 u8 component_revision_id; 120 121 struct sas_rphy rphy; 122 123 }; 124 #define rphy_to_expander_device(r) \ 125 container_of((r), struct sas_expander_device, rphy) 126 127 /* The functions by which the transport class and the driver communicate */ 128 struct sas_function_template { 129 int (*get_linkerrors)(struct sas_phy *); 130 int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); 131 int (*get_bay_identifier)(struct sas_rphy *); 132 int (*phy_reset)(struct sas_phy *, int); 133 }; 134 135 136 extern void sas_remove_host(struct Scsi_Host *); 137 138 extern struct sas_phy *sas_phy_alloc(struct device *, int); 139 extern void sas_phy_free(struct sas_phy *); 140 extern int sas_phy_add(struct sas_phy *); 141 extern void sas_phy_delete(struct sas_phy *); 142 extern int scsi_is_sas_phy(const struct device *); 143 144 extern struct sas_rphy *sas_end_device_alloc(struct sas_phy *); 145 extern struct sas_rphy *sas_expander_alloc(struct sas_phy *, enum sas_device_type); 146 void sas_rphy_free(struct sas_rphy *); 147 extern int sas_rphy_add(struct sas_rphy *); 148 extern void sas_rphy_delete(struct sas_rphy *); 149 extern int scsi_is_sas_rphy(const struct device *); 150 151 extern struct scsi_transport_template * 152 sas_attach_transport(struct sas_function_template *); 153 extern void sas_release_transport(struct scsi_transport_template *); 154 int sas_read_port_mode_page(struct scsi_device *); 155 156 static inline int 157 scsi_is_sas_expander_device(struct device *dev) 158 { 159 struct sas_rphy *rphy; 160 if (!scsi_is_sas_rphy(dev)) 161 return 0; 162 rphy = dev_to_rphy(dev); 163 return rphy->identify.device_type == SAS_FANOUT_EXPANDER_DEVICE || 164 rphy->identify.device_type == SAS_EDGE_EXPANDER_DEVICE; 165 } 166 167 #endif /* SCSI_TRANSPORT_SAS_H */ 168