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>

diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
index 38a0565..97128d8 100644 (file)
--- 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 b82544e..145b67c 100644 (file)
--- 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 644d62e..84c1ffa 100644 (file)
--- 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 c237834..027ab2c 100644 (file)
--- 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 791ed6d..d83f075 100644 (file)
--- 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;