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57 #if !defined(_SCI_HOST_H_)
61 #include "scic_sds_controller.h"
63 #include "remote_device.h"
65 #define DRV_NAME "isci"
66 #define SCI_PCI_BAR_COUNT 2
67 #define SCI_NUM_MSI_X_INT 2
69 #define SCI_SMU_BAR_SIZE (16*1024)
71 #define SCI_SCU_BAR_SIZE (4*1024*1024)
72 #define SCI_IO_SPACE_BAR0 2
73 #define SCI_IO_SPACE_BAR1 3
74 #define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
75 #define SCIC_CONTROLLER_STOP_TIMEOUT 5000
78 struct scic_sds_controller sci;
79 union scic_oem_parameters oem_parameters;
81 int id; /* unique within a given pci device */
82 struct list_head timers;
83 void *core_ctrl_memory;
84 struct dma_pool *dma_pool;
85 struct isci_phy phys[SCI_MAX_PHYS];
86 struct isci_port ports[SCI_MAX_PORTS + 1]; /* includes dummy port */
87 struct sas_ha_struct sas_ha;
90 spinlock_t queue_lock;
91 spinlock_t state_lock;
95 enum isci_status status;
96 #define IHOST_START_PENDING 0
97 #define IHOST_STOP_PENDING 1
99 wait_queue_head_t eventq;
100 struct Scsi_Host *shost;
101 struct tasklet_struct completion_tasklet;
102 struct list_head requests_to_complete;
103 struct list_head requests_to_errorback;
104 spinlock_t scic_lock;
106 struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
110 * struct isci_pci_info - This class represents the pci function containing the
111 * controllers. Depending on PCI SKU, there could be up to 2 controllers in
114 #define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
116 struct isci_pci_info {
117 struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
118 struct isci_host *hosts[SCI_MAX_CONTROLLERS];
119 struct isci_orom *orom;
122 static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
124 return pci_get_drvdata(pdev);
127 #define for_each_isci_host(id, ihost, pdev) \
128 for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \
129 id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \
130 ihost = to_pci_info(pdev)->hosts[++id])
133 enum isci_status isci_host_get_state(
134 struct isci_host *isci_host)
136 return isci_host->status;
140 static inline void isci_host_change_state(
141 struct isci_host *isci_host,
142 enum isci_status status)
146 dev_dbg(&isci_host->pdev->dev,
147 "%s: isci_host = %p, state = 0x%x",
151 spin_lock_irqsave(&isci_host->state_lock, flags);
152 isci_host->status = status;
153 spin_unlock_irqrestore(&isci_host->state_lock, flags);
157 static inline int isci_host_can_queue(
158 struct isci_host *isci_host,
164 spin_lock_irqsave(&isci_host->queue_lock, flags);
165 if ((isci_host->can_queue - num) < 0) {
166 dev_dbg(&isci_host->pdev->dev,
167 "%s: isci_host->can_queue = %d\n",
169 isci_host->can_queue);
170 ret = -SAS_QUEUE_FULL;
173 isci_host->can_queue -= num;
175 spin_unlock_irqrestore(&isci_host->queue_lock, flags);
180 static inline void isci_host_can_dequeue(
181 struct isci_host *isci_host,
186 spin_lock_irqsave(&isci_host->queue_lock, flags);
187 isci_host->can_queue += num;
188 spin_unlock_irqrestore(&isci_host->queue_lock, flags);
191 static inline void wait_for_start(struct isci_host *ihost)
193 wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags));
196 static inline void wait_for_stop(struct isci_host *ihost)
198 wait_event(ihost->eventq, !test_bit(IHOST_STOP_PENDING, &ihost->flags));
201 static inline void wait_for_device_start(struct isci_host *ihost, struct isci_remote_device *idev)
203 wait_event(ihost->eventq, !test_bit(IDEV_START_PENDING, &idev->flags));
206 static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev)
208 wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags));
211 static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
213 return dev->port->ha->lldd_ha;
216 static inline struct isci_host *scic_to_ihost(struct scic_sds_controller *scic)
218 /* XXX delete after merging scic_sds_contoller and isci_host */
219 struct isci_host *ihost = container_of(scic, typeof(*ihost), sci);
225 * isci_host_scan_finished() -
227 * This function is one of the SCSI Host Template functions. The SCSI midlayer
228 * calls this function during a target scan, approx. once every 10 millisecs.
230 int isci_host_scan_finished(
236 * isci_host_scan_start() -
238 * This function is one of the SCSI Host Template function, called by the SCSI
239 * mid layer berfore a target scan begins. The core library controller start
240 * routine is called from here.
242 void isci_host_scan_start(
246 * isci_host_start_complete() -
248 * This function is called by the core library, through the ISCI Module, to
249 * indicate controller start status.
251 void isci_host_start_complete(
255 void isci_host_stop_complete(
256 struct isci_host *isci_host,
257 enum sci_status completion_status);
259 int isci_host_init(struct isci_host *);
261 void isci_host_init_controller_names(
262 struct isci_host *isci_host,
263 unsigned int controller_idx);
265 void isci_host_deinit(
268 void isci_host_port_link_up(
270 struct scic_sds_port *,
271 struct scic_sds_phy *);
272 int isci_host_dev_found(struct domain_device *);
274 void isci_host_remote_device_start_complete(
276 struct isci_remote_device *,
279 #endif /* !defined(_SCI_HOST_H_) */