cxgb3 - detect NIC only adapters

Differentiate NIC only adapters from RNICs.
Initialize offload capabilities for RNICs only.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

5 files changed, 29 insertions, 14 deletions

diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
index 38a0565ad1c1..97128d88eaef 100644
--- a/drivers/net/cxgb3/common.h
+++ b/drivers/net/cxgb3/common.h
@@ -112,8 +112,7 @@ enum {
 };
 
 enum {
-        SUPPORTED_OFFLOAD = 1 << 24,
-        SUPPORTED_IRQ = 1 << 25
+        SUPPORTED_IRQ      = 1 << 24
 };
 
 enum {                          /* adapter interrupt-maintained statistics */
@@ -405,6 +404,7 @@ struct adapter_params {
         unsigned int stats_update_period;       /* MAC stats accumulation period */
         unsigned int linkpoll_period;   /* link poll period in 0.1s */
         unsigned int rev;       /* chip revision */
+        unsigned int offload;
 };
 
 enum {                                      /* chip revisions */
@@ -605,7 +605,7 @@ static inline int is_10G(const struct adapter *adap)
 
 static inline int is_offload(const struct adapter *adap)
 {
-        return adapter_info(adap)->caps & SUPPORTED_OFFLOAD;
+        return adap->params.offload;
 }
 
 static inline unsigned int core_ticks_per_usec(const struct adapter *adap)
diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index b82544e08689..145b67cc1d2e 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -407,7 +407,7 @@ static void quiesce_rx(struct adapter *adap)
 static int setup_sge_qsets(struct adapter *adap)
 {
         int i, j, err, irq_idx = 0, qset_idx = 0, dummy_dev_idx = 0;
-        unsigned int ntxq = is_offload(adap) ? SGE_TXQ_PER_SET : 1;
+        unsigned int ntxq = SGE_TXQ_PER_SET;
 
         if (adap->params.rev > 0 && !(adap->flags & USING_MSI))
                 irq_idx = -1;
@@ -922,7 +922,7 @@ static int cxgb_open(struct net_device *dev)
                 return err;
 
         set_bit(pi->port_id, &adapter->open_device_map);
-        if (!ofld_disable) {
+        if (is_offload(adapter) && !ofld_disable) {
                 err = offload_open(dev);
                 if (err)
                         printk(KERN_WARNING
@@ -2270,9 +2270,9 @@ static void __devinit print_port_info(struct adapter *adap,
 
                 if (!test_bit(i, &adap->registered_device_map))
                         continue;
-                printk(KERN_INFO "%s: %s %s RNIC (rev %d) %s%s\n",
+                printk(KERN_INFO "%s: %s %s %sNIC (rev %d) %s%s\n",
                        dev->name, ai->desc, pi->port_type->desc,
-                       adap->params.rev, buf,
+                       is_offload(adap) ? "R" : "", adap->params.rev, buf,
                        (adap->flags & USING_MSIX) ? " MSI-X" :
                        (adap->flags & USING_MSI) ? " MSI" : "");
                 if (adap->name == dev->name && adap->params.vpd.mclk)
diff --git a/drivers/net/cxgb3/mc5.c b/drivers/net/cxgb3/mc5.c
index 644d62ea86a6..84c1ffa8e2d3 100644
--- a/drivers/net/cxgb3/mc5.c
+++ b/drivers/net/cxgb3/mc5.c
@@ -328,6 +328,9 @@ int t3_mc5_init(struct mc5 *mc5, unsigned int nservers, unsigned int nfilters,
         unsigned int tcam_size = mc5->tcam_size;
         struct adapter *adap = mc5->adapter;
 
+        if (!tcam_size)
+                return 0;
+
         if (nroutes > MAX_ROUTES || nroutes + nservers + nfilters > tcam_size)
                 return -EINVAL;
 
diff --git a/drivers/net/cxgb3/sge.c b/drivers/net/cxgb3/sge.c
index c23783432e51..027ab2c3825c 100644
--- a/drivers/net/cxgb3/sge.c
+++ b/drivers/net/cxgb3/sge.c
@@ -2631,7 +2631,7 @@ int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports,
         q->txq[TXQ_ETH].stop_thres = nports *
             flits_to_desc(sgl_len(MAX_SKB_FRAGS + 1) + 3);
 
-        if (ntxq == 1) {
+        if (!is_offload(adapter)) {
 #ifdef USE_RX_PAGE
                 q->fl[0].buf_size = RX_PAGE_SIZE;
 #else
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index 791ed6dc1943..d83f075ef2d7 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -438,23 +438,23 @@ static const struct adapter_info t3_adap_info[] = {
         {2, 0, 0, 0,
          F_GPIO2_OEN | F_GPIO4_OEN |
          F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, F_GPIO3 | F_GPIO5,
-         SUPPORTED_OFFLOAD,
+         0,
          &mi1_mdio_ops, "Chelsio PE9000"},
         {2, 0, 0, 0,
          F_GPIO2_OEN | F_GPIO4_OEN |
          F_GPIO2_OUT_VAL | F_GPIO4_OUT_VAL, F_GPIO3 | F_GPIO5,
-         SUPPORTED_OFFLOAD,
+         0,
          &mi1_mdio_ops, "Chelsio T302"},
         {1, 0, 0, 0,
          F_GPIO1_OEN | F_GPIO6_OEN | F_GPIO7_OEN | F_GPIO10_OEN |
          F_GPIO1_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL, 0,
-         SUPPORTED_10000baseT_Full | SUPPORTED_AUI | SUPPORTED_OFFLOAD,
+         SUPPORTED_10000baseT_Full | SUPPORTED_AUI,
          &mi1_mdio_ext_ops, "Chelsio T310"},
         {2, 0, 0, 0,
          F_GPIO1_OEN | F_GPIO2_OEN | F_GPIO4_OEN | F_GPIO5_OEN | F_GPIO6_OEN |
          F_GPIO7_OEN | F_GPIO10_OEN | F_GPIO11_OEN | F_GPIO1_OUT_VAL |
          F_GPIO5_OUT_VAL | F_GPIO6_OUT_VAL | F_GPIO10_OUT_VAL, 0,
-         SUPPORTED_10000baseT_Full | SUPPORTED_AUI | SUPPORTED_OFFLOAD,
+         SUPPORTED_10000baseT_Full | SUPPORTED_AUI,
          &mi1_mdio_ext_ops, "Chelsio T320"},
 };
 
@@ -2900,6 +2900,9 @@ static int mc7_init(struct mc7 *mc7, unsigned int mc7_clock, int mem_type)
         struct adapter *adapter = mc7->adapter;
         const struct mc7_timing_params *p = &mc7_timings[mem_type];
 
+        if (!mc7->size)
+                return 0;
+
         val = t3_read_reg(adapter, mc7->offset + A_MC7_CFG);
         slow = val & F_SLOW;
         width = G_WIDTH(val);
@@ -3100,8 +3103,10 @@ int t3_init_hw(struct adapter *adapter, u32 fw_params)
         do {                    /* wait for uP to initialize */
                 msleep(20);
         } while (t3_read_reg(adapter, A_CIM_HOST_ACC_DATA) && --attempts);
-        if (!attempts)
+        if (!attempts) {
+                CH_ERR(adapter, "uP initialization timed out\n");
                 goto out_err;
+        }
 
         err = 0;
 out_err:
@@ -3201,7 +3206,7 @@ static void __devinit mc7_prep(struct adapter *adapter, struct mc7 *mc7,
         mc7->name = name;
         mc7->offset = base_addr - MC7_PMRX_BASE_ADDR;
         cfg = t3_read_reg(adapter, mc7->offset + A_MC7_CFG);
-        mc7->size = mc7_calc_size(cfg);
+        mc7->size = mc7->size = G_DEN(cfg) == M_DEN ? 0 : mc7_calc_size(cfg);
         mc7->width = G_WIDTH(cfg);
 }
 
@@ -3228,6 +3233,7 @@ void early_hw_init(struct adapter *adapter, const struct adapter_info *ai)
                      V_I2C_CLKDIV(adapter->params.vpd.cclk / 80 - 1));
         t3_write_reg(adapter, A_T3DBG_GPIO_EN,
                      ai->gpio_out | F_GPIO0_OEN | F_GPIO0_OUT_VAL);
+        t3_write_reg(adapter, A_MC5_DB_SERVER_INDEX, 0);
 
         if (adapter->params.rev == 0 || !uses_xaui(adapter))
                 val |= F_ENRGMII;
@@ -3326,7 +3332,13 @@ int __devinit t3_prep_adapter(struct adapter *adapter,
                 p->tx_num_pgs = pm_num_pages(p->chan_tx_size, p->tx_pg_size);
                 p->ntimer_qs = p->cm_size >= (128 << 20) ||
                     adapter->params.rev > 0 ? 12 : 6;
+        }
+
+        adapter->params.offload = t3_mc7_size(&adapter->pmrx) &&
+                                  t3_mc7_size(&adapter->pmtx) &&
+                                  t3_mc7_size(&adapter->cm);
 
+        if (is_offload(adapter)) {
                 adapter->params.mc5.nservers = DEFAULT_NSERVERS;
                 adapter->params.mc5.nfilters = adapter->params.rev > 0 ?
                     DEFAULT_NFILTERS : 0;