[SCSI] qla2xxx: Add iIDMA support.

iIDMA (Intelligent Interleaved Direct Memory Access) allows for
the HBA hardware to send FC frames at the rate at which they can
be received by a target device.  By taking advantage of the
higher link rate, the HBA can maximize bandwidth utilization in a
heterogeneous multi-speed SAN.

Within a fabric topology, port speed detection is done via a Name
Server command (GFPN_ID) followed by a Fabric Management command
(GPSC).  In an FCAL/N2N topology, port speed is based on the HBA
link-rate.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 34 insertions, 5 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 0930260aec2c..6d677b0fb551 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -608,6 +608,7 @@ typedef struct {
  */
 #define MBC_SERDES_PARAMS               0x10    /* Serdes Tx Parameters. */
 #define MBC_GET_IOCB_STATUS             0x12    /* Get IOCB status command. */
+#define MBC_PORT_PARAMS                 0x1A    /* Port iDMA Parameters. */
 #define MBC_GET_TIMEOUT_PARAMS          0x22    /* Get FW timeouts. */
 #define MBC_TRACE_CONTROL               0x27    /* Trace control command. */
 #define MBC_GEN_SYSTEM_ERROR            0x2a    /* Generate System Error. */
@@ -1497,6 +1498,9 @@ typedef struct {
         port_id_t d_id;
         uint8_t node_name[WWN_SIZE];
         uint8_t port_name[WWN_SIZE];
+        uint8_t fabric_port_name[WWN_SIZE];
+        uint16_t fp_speeds;
+        uint16_t fp_speed;
 } sw_info_t;
 
 /*
@@ -1524,6 +1528,9 @@ typedef struct fc_port {
         uint16_t loop_id;
         uint16_t old_loop_id;
 
+        uint8_t fabric_port_name[WWN_SIZE];
+        uint16_t fp_speed;
+
         fc_port_type_t port_type;
 
         atomic_t state;
@@ -1635,6 +1642,15 @@ typedef struct fc_port {
 #define RSNN_NN_REQ_SIZE (16 + 8 + 1 + 255)
 #define RSNN_NN_RSP_SIZE 16
 
+#define GFPN_ID_CMD     0x11C
+#define GFPN_ID_REQ_SIZE (16 + 4)
+#define GFPN_ID_RSP_SIZE (16 + 8)
+
+#define GPSC_CMD        0x127
+#define GPSC_REQ_SIZE   (16 + 8)
+#define GPSC_RSP_SIZE   (16 + 2 + 2)
+
+
 /*
  * HBA attribute types.
  */
@@ -1748,7 +1764,7 @@ struct ct_sns_req {
         uint8_t reserved[3];
 
         union {
-                /* GA_NXT, GPN_ID, GNN_ID, GFT_ID */
+                /* GA_NXT, GPN_ID, GNN_ID, GFT_ID, GFPN_ID */
                 struct {
                         uint8_t reserved;
                         uint8_t port_id[3];
@@ -1823,6 +1839,10 @@ struct ct_sns_req {
                 struct {
                         uint8_t port_name[8];
                 } dpa;
+
+                struct {
+                        uint8_t port_name[8];
+                } gpsc;
         } req;
 };
 
@@ -1886,6 +1906,15 @@ struct ct_sns_rsp {
                         uint8_t port_name[8];
                         struct ct_fdmi_hba_attributes attrs;
                 } ghat;
+
+                struct {
+                        uint8_t port_name[8];
+                } gfpn_id;
+
+                struct {
+                        uint16_t speeds;
+                        uint16_t speed;
+                } gpsc;
         } rsp;
 };
 
@@ -2182,11 +2211,11 @@ typedef struct scsi_qla_host {
         uint16_t        max_public_loop_ids;
         uint16_t        min_external_loopid;    /* First external loop Id */
 
+#define PORT_SPEED_UNKNOWN 0xFFFF
+#define PORT_SPEED_1GB  0x00
+#define PORT_SPEED_2GB  0x01
+#define PORT_SPEED_4GB  0x03
         uint16_t        link_data_rate;         /* F/W operating speed */
-#define LDR_1GB         0
-#define LDR_2GB         1
-#define LDR_4GB         3
-#define LDR_UNKNOWN     0xFFFF
 
         uint8_t         current_topology;
         uint8_t         prev_topology;