cxgb3 - Add iscsi support

Add iSCSI (S3xx) support.

Signed-off-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

5 files changed, 59 insertions, 8 deletions

diff --git a/drivers/net/cxgb3/cxgb3_ctl_defs.h b/drivers/net/cxgb3/cxgb3_ctl_defs.h
index 6c4f32066919..d38e6cc92668 100644
--- a/drivers/net/cxgb3/cxgb3_ctl_defs.h
+++ b/drivers/net/cxgb3/cxgb3_ctl_defs.h
@@ -110,10 +110,7 @@ struct ulp_iscsi_info {
         unsigned int llimit;
         unsigned int ulimit;
         unsigned int tagmask;
-        unsigned int pgsz3;
-        unsigned int pgsz2;
-        unsigned int pgsz1;
-        unsigned int pgsz0;
+        u8 pgsz_factor[4];
         unsigned int max_rxsz;
         unsigned int max_txsz;
         struct pci_dev *pdev;
diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c
index ae6ff5df779c..c69f4c0187d9 100644
--- a/drivers/net/cxgb3/cxgb3_offload.c
+++ b/drivers/net/cxgb3/cxgb3_offload.c
@@ -207,6 +207,17 @@ static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req,
                 break;
         case ULP_ISCSI_SET_PARAMS:
                 t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask);
+                /* set MaxRxData and MaxCoalesceSize to 16224 */
+                t3_write_reg(adapter, A_TP_PARA_REG2, 0x3f603f60);
+                /* program the ddp page sizes */
+                {
+                        int i;
+                        unsigned int val = 0;
+                        for (i = 0; i < 4; i++)
+                                val |= (uiip->pgsz_factor[i] & 0xF) << (8 * i);
+                        if (val)
+                                t3_write_reg(adapter, A_ULPRX_ISCSI_PSZ, val);
+                }
                 break;
         default:
                 ret = -EOPNOTSUPP;
diff --git a/drivers/net/cxgb3/regs.h b/drivers/net/cxgb3/regs.h
index 567178879345..4bda27c551c9 100644
--- a/drivers/net/cxgb3/regs.h
+++ b/drivers/net/cxgb3/regs.h
@@ -1517,16 +1517,18 @@
 
 #define A_ULPRX_ISCSI_TAGMASK 0x514
 
-#define S_HPZ0    0
-#define M_HPZ0    0xf
-#define V_HPZ0(x) ((x) << S_HPZ0)
-#define G_HPZ0(x) (((x) >> S_HPZ0) & M_HPZ0)
+#define A_ULPRX_ISCSI_PSZ 0x518
 
 #define A_ULPRX_TDDP_LLIMIT 0x51c
 
 #define A_ULPRX_TDDP_ULIMIT 0x520
 #define A_ULPRX_TDDP_PSZ 0x528
 
+#define S_HPZ0    0
+#define M_HPZ0    0xf
+#define V_HPZ0(x) ((x) << S_HPZ0)
+#define G_HPZ0(x) (((x) >> S_HPZ0) & M_HPZ0)
+
 #define A_ULPRX_STAG_LLIMIT 0x52c
 
 #define A_ULPRX_STAG_ULIMIT 0x530
diff --git a/drivers/net/cxgb3/t3_cpl.h b/drivers/net/cxgb3/t3_cpl.h
index a666c5d51cc0..917970ed24a1 100644
--- a/drivers/net/cxgb3/t3_cpl.h
+++ b/drivers/net/cxgb3/t3_cpl.h
@@ -191,6 +191,9 @@ union opcode_tid {
 #define G_OPCODE(x) (((x) >> S_OPCODE) & 0xFF)
 #define G_TID(x)    ((x) & 0xFFFFFF)
 
+#define S_QNUM 0
+#define G_QNUM(x) (((x) >> S_QNUM) & 0xFFFF)
+
 #define S_HASHTYPE 22
 #define M_HASHTYPE 0x3
 #define G_HASHTYPE(x) (((x) >> S_HASHTYPE) & M_HASHTYPE)
@@ -779,6 +782,12 @@ struct tx_data_wr {
         __be32 param;
 };
 
+/* tx_data_wr.flags fields */
+#define S_TX_ACK_PAGES  21
+#define M_TX_ACK_PAGES  0x7
+#define V_TX_ACK_PAGES(x) ((x) << S_TX_ACK_PAGES)
+#define G_TX_ACK_PAGES(x) (((x) >> S_TX_ACK_PAGES) & M_TX_ACK_PAGES)
+
 /* tx_data_wr.param fields */
 #define S_TX_PORT    0
 #define M_TX_PORT    0x7
@@ -1452,4 +1461,35 @@ struct cpl_rdma_terminate {
 #define M_TERM_TID    0xFFFFF
 #define V_TERM_TID(x) ((x) << S_TERM_TID)
 #define G_TERM_TID(x) (((x) >> S_TERM_TID) & M_TERM_TID)
+
+/* ULP_TX opcodes */
+enum { ULP_MEM_READ = 2, ULP_MEM_WRITE = 3, ULP_TXPKT = 4 };
+
+#define S_ULPTX_CMD     28
+#define M_ULPTX_CMD     0xF
+#define V_ULPTX_CMD(x)  ((x) << S_ULPTX_CMD)
+
+#define S_ULPTX_NFLITS  0
+#define M_ULPTX_NFLITS  0xFF
+#define V_ULPTX_NFLITS(x) ((x) << S_ULPTX_NFLITS)
+
+struct ulp_mem_io {
+        WR_HDR;
+        __be32 cmd_lock_addr;
+        __be32 len;
+};
+
+/* ulp_mem_io.cmd_lock_addr fields */
+#define S_ULP_MEMIO_ADDR        0
+#define M_ULP_MEMIO_ADDR        0x7FFFFFF
+#define V_ULP_MEMIO_ADDR(x)     ((x) << S_ULP_MEMIO_ADDR)
+#define S_ULP_MEMIO_LOCK        27
+#define V_ULP_MEMIO_LOCK(x)     ((x) << S_ULP_MEMIO_LOCK)
+#define F_ULP_MEMIO_LOCK        V_ULP_MEMIO_LOCK(1U)
+
+/* ulp_mem_io.len fields */
+#define S_ULP_MEMIO_DATA_LEN    28
+#define M_ULP_MEMIO_DATA_LEN    0xF
+#define V_ULP_MEMIO_DATA_LEN(x) ((x) << S_ULP_MEMIO_DATA_LEN)
+
 #endif                          /* T3_CPL_H */
diff --git a/drivers/net/cxgb3/t3cdev.h b/drivers/net/cxgb3/t3cdev.h
index 8556628fd5af..0a21cfbd2b21 100644
--- a/drivers/net/cxgb3/t3cdev.h
+++ b/drivers/net/cxgb3/t3cdev.h
@@ -64,6 +64,7 @@ struct t3cdev {
         void *l3opt;            /* optional layer 3 data */
         void *l4opt;            /* optional layer 4 data */
         void *ulp;              /* ulp stuff */
+        void *ulp_iscsi;        /* ulp iscsi */
 };
 
 #endif                          /* _T3CDEV_H_ */