[SCSI] cxgb4i: add support for T5 adapter

Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 128 insertions, 31 deletions

diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 3fecf35ba292..e659febaedcb 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -20,6 +20,7 @@
 #include <net/dst.h>
 #include <linux/netdevice.h>
 
+#include "t4_regs.h"
 #include "t4_msg.h"
 #include "cxgb4.h"
 #include "cxgb4_uld.h"
@@ -32,13 +33,12 @@ static unsigned int dbg_level;
 #include "../libcxgbi.h"
 
 #define DRV_MODULE_NAME         "cxgb4i"
-#define DRV_MODULE_DESC         "Chelsio T4 iSCSI Driver"
-#define DRV_MODULE_VERSION      "0.9.1"
-#define DRV_MODULE_RELDATE      "Aug. 2010"
+#define DRV_MODULE_DESC         "Chelsio T4/T5 iSCSI Driver"
+#define DRV_MODULE_VERSION      "0.9.4"
 
 static char version[] =
         DRV_MODULE_DESC " " DRV_MODULE_NAME
-        " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+        " v" DRV_MODULE_VERSION "\n";
 
 MODULE_AUTHOR("Chelsio Communications, Inc.");
 MODULE_DESCRIPTION(DRV_MODULE_DESC);
@@ -175,10 +175,56 @@ static inline int is_ofld_imm(const struct sk_buff *skb)
                         sizeof(struct fw_ofld_tx_data_wr));
 }
 
+
+#define VLAN_NONE 0xfff
+#define FILTER_SEL_VLAN_NONE 0xffff
+#define FILTER_SEL_WIDTH_P_FC (3+1) /* port uses 3 bits, FCoE one bit */
+#define FILTER_SEL_WIDTH_VIN_P_FC \
+        (6 + 7 + FILTER_SEL_WIDTH_P_FC) /* 6 bits are unused, VF uses 7 bits*/
+#define FILTER_SEL_WIDTH_TAG_P_FC \
+        (3 + FILTER_SEL_WIDTH_VIN_P_FC) /* PF uses 3 bits */
+#define FILTER_SEL_WIDTH_VLD_TAG_P_FC (1 + FILTER_SEL_WIDTH_TAG_P_FC)
+
+static unsigned int select_ntuple(struct cxgbi_device *cdev,
+                                struct l2t_entry *l2t)
+{
+        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev);
+        unsigned int ntuple = 0;
+        u32 viid;
+
+        switch (lldi->filt_mode) {
+
+        /* default filter mode */
+        case HW_TPL_FR_MT_PR_IV_P_FC:
+                if (l2t->vlan == VLAN_NONE)
+                        ntuple |= FILTER_SEL_VLAN_NONE << FILTER_SEL_WIDTH_P_FC;
+                else {
+                        ntuple |= l2t->vlan << FILTER_SEL_WIDTH_P_FC;
+                        ntuple |= 1 << FILTER_SEL_WIDTH_VLD_TAG_P_FC;
+                }
+                ntuple |= l2t->lport << S_PORT | IPPROTO_TCP <<
+                          FILTER_SEL_WIDTH_VLD_TAG_P_FC;
+                break;
+        case HW_TPL_FR_MT_PR_OV_P_FC: {
+                viid = cxgb4_port_viid(l2t->neigh->dev);
+
+                ntuple |= FW_VIID_VIN_GET(viid) << FILTER_SEL_WIDTH_P_FC;
+                ntuple |= FW_VIID_PFN_GET(viid) << FILTER_SEL_WIDTH_VIN_P_FC;
+                ntuple |= FW_VIID_VIVLD_GET(viid) << FILTER_SEL_WIDTH_TAG_P_FC;
+                ntuple |= l2t->lport << S_PORT | IPPROTO_TCP <<
+                          FILTER_SEL_WIDTH_VLD_TAG_P_FC;
+                break;
+        }
+        default:
+                break;
+        }
+        return ntuple;
+}
+
 static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
                                 struct l2t_entry *e)
 {
-        struct cpl_act_open_req *req;
+        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
         int wscale = cxgbi_sock_compute_wscale(csk->mss_idx);
         unsigned long long opt0;
         unsigned int opt2;
@@ -195,29 +241,58 @@ static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
                 RCV_BUFSIZ(cxgb4i_rcv_win >> 10);
         opt2 = RX_CHANNEL(0) |
                 RSS_QUEUE_VALID |
-                (1 << 20) | (1 << 22) |
+                (1 << 20) |
                 RSS_QUEUE(csk->rss_qid);
 
-        set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
-        req = (struct cpl_act_open_req *)skb->head;
+        if (is_t4(lldi->adapter_type)) {
+                struct cpl_act_open_req *req =
+                                (struct cpl_act_open_req *)skb->head;
 
-        INIT_TP_WR(req, 0);
-        OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
+                req = (struct cpl_act_open_req *)skb->head;
+
+                INIT_TP_WR(req, 0);
+                OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
                                         qid_atid));
-        req->local_port = csk->saddr.sin_port;
-        req->peer_port = csk->daddr.sin_port;
-        req->local_ip = csk->saddr.sin_addr.s_addr;
-        req->peer_ip = csk->daddr.sin_addr.s_addr;
-        req->opt0 = cpu_to_be64(opt0);
-        req->params = 0;
-        req->opt2 = cpu_to_be32(opt2);
+                req->local_port = csk->saddr.sin_port;
+                req->peer_port = csk->daddr.sin_port;
+                req->local_ip = csk->saddr.sin_addr.s_addr;
+                req->peer_ip = csk->daddr.sin_addr.s_addr;
+                req->opt0 = cpu_to_be64(opt0);
+                req->params = cpu_to_be32(select_ntuple(csk->cdev, csk->l2t));
+                opt2 |= 1 << 22;
+                req->opt2 = cpu_to_be32(opt2);
 
-        log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
-                "csk 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n",
-                csk, &req->local_ip, ntohs(req->local_port),
-                &req->peer_ip, ntohs(req->peer_port),
-                csk->atid, csk->rss_qid);
+                log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
+                        "csk t4 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n",
+                        csk, &req->local_ip, ntohs(req->local_port),
+                        &req->peer_ip, ntohs(req->peer_port),
+                        csk->atid, csk->rss_qid);
+        } else {
+                struct cpl_t5_act_open_req *req =
+                                (struct cpl_t5_act_open_req *)skb->head;
+
+                req = (struct cpl_t5_act_open_req *)skb->head;
+
+                INIT_TP_WR(req, 0);
+                OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
+                                        qid_atid));
+                req->local_port = csk->saddr.sin_port;
+                req->peer_port = csk->daddr.sin_port;
+                req->local_ip = csk->saddr.sin_addr.s_addr;
+                req->peer_ip = csk->daddr.sin_addr.s_addr;
+                req->opt0 = cpu_to_be64(opt0);
+                req->params = cpu_to_be32(select_ntuple(csk->cdev, csk->l2t));
+                opt2 |= 1 << 31;
+                req->opt2 = cpu_to_be32(opt2);
 
+                log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
+                        "csk t5 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n",
+                        csk, &req->local_ip, ntohs(req->local_port),
+                        &req->peer_ip, ntohs(req->peer_port),
+                        csk->atid, csk->rss_qid);
+        }
+
+        set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
         cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t);
 }
 
@@ -632,6 +707,7 @@ static void csk_act_open_retry_timer(unsigned long data)
 {
         struct sk_buff *skb;
         struct cxgbi_sock *csk = (struct cxgbi_sock *)data;
+        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
 
         log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
                 "csk 0x%p,%u,0x%lx,%u.\n",
@@ -639,7 +715,10 @@ static void csk_act_open_retry_timer(unsigned long data)
 
         cxgbi_sock_get(csk);
         spin_lock_bh(&csk->lock);
-        skb = alloc_wr(sizeof(struct cpl_act_open_req), 0, GFP_ATOMIC);
+        skb = alloc_wr(is_t4(lldi->adapter_type) ?
+                                sizeof(struct cpl_act_open_req) :
+                                sizeof(struct cpl_t5_act_open_req),
+                        0, GFP_ATOMIC);
         if (!skb)
                 cxgbi_sock_fail_act_open(csk, -ENOMEM);
         else {
@@ -871,7 +950,7 @@ static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb)
 
         if (!csk->skb_ulp_lhdr) {
                 unsigned char *bhs;
-                unsigned int hlen, dlen;
+                unsigned int hlen, dlen, plen;
 
                 log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_PDU_RX,
                         "csk 0x%p,%u,0x%lx, tid %u, skb 0x%p header.\n",
@@ -890,11 +969,15 @@ static void do_rx_iscsi_hdr(struct cxgbi_device *cdev, struct sk_buff *skb)
                 hlen = ntohs(cpl->len);
                 dlen = ntohl(*(unsigned int *)(bhs + 4)) & 0xFFFFFF;
 
-                if ((hlen + dlen) != ISCSI_PDU_LEN(pdu_len_ddp) - 40) {
+                plen = ISCSI_PDU_LEN(pdu_len_ddp);
+                if (is_t4(lldi->adapter_type))
+                        plen -= 40;
+
+                if ((hlen + dlen) != plen) {
                         pr_info("tid 0x%x, CPL_ISCSI_HDR, pdu len "
                                 "mismatch %u != %u + %u, seq 0x%x.\n",
-                                csk->tid, ISCSI_PDU_LEN(pdu_len_ddp) - 40,
-                                hlen, dlen, cxgbi_skcb_tcp_seq(skb));
+                                csk->tid, plen, hlen, dlen,
+                                cxgbi_skcb_tcp_seq(skb));
                         goto abort_conn;
                 }
 
@@ -1154,7 +1237,10 @@ static int init_act_open(struct cxgbi_sock *csk)
         }
         cxgbi_sock_get(csk);
 
-        skb = alloc_wr(sizeof(struct cpl_act_open_req), 0, GFP_KERNEL);
+        skb = alloc_wr(is_t4(lldi->adapter_type) ?
+                                sizeof(struct cpl_act_open_req) :
+                                sizeof(struct cpl_t5_act_open_req),
+                        0, GFP_ATOMIC);
         if (!skb)
                 goto rel_resource;
         skb->sk = (struct sock *)csk;
@@ -1193,6 +1279,8 @@ rel_resource:
         return -EINVAL;
 }
 
+#define CPL_ISCSI_DATA          0xB2
+#define CPL_RX_ISCSI_DDP        0x49
 cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = {
         [CPL_ACT_ESTABLISH] = do_act_establish,
         [CPL_ACT_OPEN_RPL] = do_act_open_rpl,
@@ -1202,8 +1290,10 @@ cxgb4i_cplhandler_func cxgb4i_cplhandlers[NUM_CPL_CMDS] = {
         [CPL_CLOSE_CON_RPL] = do_close_con_rpl,
         [CPL_FW4_ACK] = do_fw4_ack,
         [CPL_ISCSI_HDR] = do_rx_iscsi_hdr,
+        [CPL_ISCSI_DATA] = do_rx_iscsi_hdr,
         [CPL_SET_TCB_RPL] = do_set_tcb_rpl,
         [CPL_RX_DATA_DDP] = do_rx_data_ddp,
+        [CPL_RX_ISCSI_DDP] = do_rx_data_ddp,
 };
 
 int cxgb4i_ofld_init(struct cxgbi_device *cdev)
@@ -1234,14 +1324,20 @@ int cxgb4i_ofld_init(struct cxgbi_device *cdev)
  * functions to program the pagepod in h/w
  */
 #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */
-static inline void ulp_mem_io_set_hdr(struct ulp_mem_io *req,
+static inline void ulp_mem_io_set_hdr(struct cxgb4_lld_info *lldi,
+                                struct ulp_mem_io *req,
                                 unsigned int wr_len, unsigned int dlen,
                                 unsigned int pm_addr)
 {
         struct ulptx_idata *idata = (struct ulptx_idata *)(req + 1);
 
         INIT_ULPTX_WR(req, wr_len, 0, 0);
-        req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) | (1 << 23));
+        if (is_t4(lldi->adapter_type))
+                req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) |
+                                        (ULP_MEMIO_ORDER(1)));
+        else
+                req->cmd = htonl(ULPTX_CMD(ULP_TX_MEM_WRITE) |
+                                        (V_T5_ULP_MEMIO_IMM(1)));
         req->dlen = htonl(ULP_MEMIO_DATA_LEN(dlen >> 5));
         req->lock_addr = htonl(ULP_MEMIO_ADDR(pm_addr >> 5));
         req->len16 = htonl(DIV_ROUND_UP(wr_len - sizeof(req->wr), 16));
@@ -1257,6 +1353,7 @@ static int ddp_ppod_write_idata(struct cxgbi_device *cdev, unsigned int port_id,
                                 unsigned int gl_pidx)
 {
         struct cxgbi_ddp_info *ddp = cdev->ddp;
+        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(cdev);
         struct sk_buff *skb;
         struct ulp_mem_io *req;
         struct ulptx_idata *idata;
@@ -1276,7 +1373,7 @@ static int ddp_ppod_write_idata(struct cxgbi_device *cdev, unsigned int port_id,
         req = (struct ulp_mem_io *)skb->head;
         set_queue(skb, CPL_PRIORITY_CONTROL, NULL);
 
-        ulp_mem_io_set_hdr(req, wr_len, dlen, pm_addr);
+        ulp_mem_io_set_hdr(lldi, req, wr_len, dlen, pm_addr);
         idata = (struct ulptx_idata *)(req + 1);
         ppod = (struct cxgbi_pagepod *)(idata + 1);