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59 #include "scic_sds_controller.h"
60 #include "remote_device.h"
64 struct scic_sds_controller sci;
65 union scic_oem_parameters oem_parameters;
67 int id; /* unique within a given pci device */
68 struct list_head timers;
69 void *core_ctrl_memory;
70 struct dma_pool *dma_pool;
71 struct isci_phy phys[SCI_MAX_PHYS];
72 struct isci_port ports[SCI_MAX_PORTS + 1]; /* includes dummy port */
73 struct sas_ha_struct sas_ha;
76 spinlock_t queue_lock;
77 spinlock_t state_lock;
81 enum isci_status status;
82 #define IHOST_START_PENDING 0
83 #define IHOST_STOP_PENDING 1
85 wait_queue_head_t eventq;
86 struct Scsi_Host *shost;
87 struct tasklet_struct completion_tasklet;
88 struct list_head requests_to_complete;
89 struct list_head requests_to_errorback;
92 struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
96 * struct isci_pci_info - This class represents the pci function containing the
97 * controllers. Depending on PCI SKU, there could be up to 2 controllers in
100 #define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
102 struct isci_pci_info {
103 struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
104 struct isci_host *hosts[SCI_MAX_CONTROLLERS];
105 struct isci_orom *orom;
108 static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
110 return pci_get_drvdata(pdev);
113 #define for_each_isci_host(id, ihost, pdev) \
114 for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \
115 id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \
116 ihost = to_pci_info(pdev)->hosts[++id])
119 enum isci_status isci_host_get_state(
120 struct isci_host *isci_host)
122 return isci_host->status;
126 static inline void isci_host_change_state(
127 struct isci_host *isci_host,
128 enum isci_status status)
132 dev_dbg(&isci_host->pdev->dev,
133 "%s: isci_host = %p, state = 0x%x",
137 spin_lock_irqsave(&isci_host->state_lock, flags);
138 isci_host->status = status;
139 spin_unlock_irqrestore(&isci_host->state_lock, flags);
143 static inline int isci_host_can_queue(
144 struct isci_host *isci_host,
150 spin_lock_irqsave(&isci_host->queue_lock, flags);
151 if ((isci_host->can_queue - num) < 0) {
152 dev_dbg(&isci_host->pdev->dev,
153 "%s: isci_host->can_queue = %d\n",
155 isci_host->can_queue);
156 ret = -SAS_QUEUE_FULL;
159 isci_host->can_queue -= num;
161 spin_unlock_irqrestore(&isci_host->queue_lock, flags);
166 static inline void isci_host_can_dequeue(
167 struct isci_host *isci_host,
172 spin_lock_irqsave(&isci_host->queue_lock, flags);
173 isci_host->can_queue += num;
174 spin_unlock_irqrestore(&isci_host->queue_lock, flags);
177 static inline void wait_for_start(struct isci_host *ihost)
179 wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags));
182 static inline void wait_for_stop(struct isci_host *ihost)
184 wait_event(ihost->eventq, !test_bit(IHOST_STOP_PENDING, &ihost->flags));
187 static inline void wait_for_device_start(struct isci_host *ihost, struct isci_remote_device *idev)
189 wait_event(ihost->eventq, !test_bit(IDEV_START_PENDING, &idev->flags));
192 static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
194 wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags));
197 static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
199 return dev->port->ha->lldd_ha;
202 static inline struct isci_host *scic_to_ihost(struct scic_sds_controller *scic)
204 /* XXX delete after merging scic_sds_contoller and isci_host */
205 struct isci_host *ihost = container_of(scic, typeof(*ihost), sci);
211 * isci_host_scan_finished() -
213 * This function is one of the SCSI Host Template functions. The SCSI midlayer
214 * calls this function during a target scan, approx. once every 10 millisecs.
216 int isci_host_scan_finished(
222 * isci_host_scan_start() -
224 * This function is one of the SCSI Host Template function, called by the SCSI
225 * mid layer berfore a target scan begins. The core library controller start
226 * routine is called from here.
228 void isci_host_scan_start(
232 * isci_host_start_complete() -
234 * This function is called by the core library, through the ISCI Module, to
235 * indicate controller start status.
237 void isci_host_start_complete(
241 void isci_host_stop_complete(
242 struct isci_host *isci_host,
243 enum sci_status completion_status);
245 int isci_host_init(struct isci_host *);
247 void isci_host_init_controller_names(
248 struct isci_host *isci_host,
249 unsigned int controller_idx);
251 void isci_host_deinit(
254 void isci_host_port_link_up(
256 struct scic_sds_port *,
257 struct scic_sds_phy *);
258 int isci_host_dev_found(struct domain_device *);
260 void isci_host_remote_device_start_complete(
262 struct isci_remote_device *,
265 #endif /* !defined(_SCI_HOST_H_) */