ARM: Do early I/O mapping if spinlock debugging is enabled

[linux-2.6-omap-h63xx.git] / include / scsi / libfc.h

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index a2e126b86e3e9069961684d638ef30b53616f715..0303a6a098cc2f8a7124adcf60167a6bf5ad919d 100644 (file)
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -22,6 +22,7 @@
 
 #include <linux/timer.h>
 #include <linux/if.h>
+#include <linux/percpu.h>
 
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_transport_fc.h>
@@ -245,6 +246,7 @@ struct fc_fcp_pkt {
         */
        struct fcp_cmnd cdb_cmd;
        size_t          xfer_len;
+       u16             xfer_ddp;       /* this xfer is ddped */
        u32             xfer_contig_end; /* offset of end of contiguous xfer */
        u16             max_payload;    /* max payload size in bytes */
 
@@ -267,6 +269,15 @@ struct fc_fcp_pkt {
        u8              recov_retry;    /* count of recovery retries */
        struct fc_seq   *recov_seq;     /* sequence for REC or SRR */
 };
+/*
+ * FC_FCP HELPER FUNCTIONS
+ *****************************/
+static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
+{
+       if (fsp && fsp->cmd)
+               return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE;
+       return false;
+}
 
 /*
  * Structure and function definitions for managing Fibre Channel Exchanges
@@ -399,6 +410,21 @@ struct libfc_function_template {
                                                           void *arg),
                                        void *arg, unsigned int timer_msec);
 
+       /*
+        * Sets up the DDP context for a given exchange id on the given
+        * scatterlist if LLD supports DDP for large receive.
+        *
+        * STATUS: OPTIONAL
+        */
+       int (*ddp_setup)(struct fc_lport *lp, u16 xid,
+                        struct scatterlist *sgl, unsigned int sgc);
+       /*
+        * Completes the DDP transfer and returns the length of data DDPed
+        * for the given exchange id.
+        *
+        * STATUS: OPTIONAL
+        */
+       int (*ddp_done)(struct fc_lport *lp, u16 xid);
        /*
         * Send a frame using an existing sequence and exchange.
         *
@@ -636,7 +662,8 @@ struct fc_lport {
        unsigned long           boot_time;
 
        struct fc_host_statistics host_stats;
-       struct fcoe_dev_stats   *dev_stats[NR_CPUS];
+       struct fcoe_dev_stats   *dev_stats;
+
        u64                     wwpn;
        u64                     wwnn;
        u8                      retry_count;
@@ -654,6 +681,7 @@ struct fc_lport {
        u16                     link_speed;
        u16                     link_supported_speeds;
        u16                     lro_xid;        /* max xid for fcoe lro */
+       unsigned int            lso_max;        /* max large send size */
        struct fc_ns_fts        fcts;           /* FC-4 type masks */
        struct fc_els_rnid_gen  rnid_gen;       /* RNID information */
 
@@ -668,11 +696,6 @@ struct fc_lport {
 /*
  * FC_LPORT HELPER FUNCTIONS
  *****************************/
-static inline void *lport_priv(const struct fc_lport *lp)
-{
-       return (void *)(lp + 1);
-}
-
 static inline int fc_lport_test_ready(struct fc_lport *lp)
 {
        return lp->state == LPORT_ST_READY;
@@ -696,6 +719,42 @@ static inline void fc_lport_state_enter(struct fc_lport *lp,
        lp->state = state;
 }
 
+static inline int fc_lport_init_stats(struct fc_lport *lp)
+{
+       /* allocate per cpu stats block */
+       lp->dev_stats = alloc_percpu(struct fcoe_dev_stats);
+       if (!lp->dev_stats)
+               return -ENOMEM;
+       return 0;
+}
+
+static inline void fc_lport_free_stats(struct fc_lport *lp)
+{
+       free_percpu(lp->dev_stats);
+}
+
+static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lp)
+{
+       return per_cpu_ptr(lp->dev_stats, smp_processor_id());
+}
+
+static inline void *lport_priv(const struct fc_lport *lp)
+{
+       return (void *)(lp + 1);
+}
+
+/**
+ * libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
+ * @sht: ptr to the scsi host templ
+ * @priv_size: size of private data after fc_lport
+ *
+ * Returns: ptr to Scsi_Host
+ */
+static inline struct Scsi_Host *
+libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
+{
+       return scsi_host_alloc(sht, sizeof(struct fc_lport) + priv_size);
+}
 
 /*
  * LOCAL PORT LAYER
@@ -820,6 +879,11 @@ int fc_change_queue_type(struct scsi_device *sdev, int tag_type);
  */
 void fc_fcp_destroy(struct fc_lport *);
 
+/*
+ * Set up direct-data placement for this I/O request
+ */
+void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid);
+
 /*
  * ELS/CT interface
  *****************************/