myri10ge: use DCA if DCA is compiled as a module

Use DCA in myri10ge when CONFIG_DCA_MODULE is set as well.

And thus force INTEL_IOATDMA to =y so that DCA=y if we are =y.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/Kconfig

@@ -2464,6 +2464,7 @@ config MYRI10GE
 	select FW_LOADER
 	select CRC32
 	select INET_LRO
+	select INTEL_IOATDMA
 	---help---
 	  This driver supports Myricom Myri-10G Dual Protocol interface in
 	  Ethernet mode. If the eeprom on your board is not recent enough,

drivers/net/myri10ge/myri10ge.c

@@ -183,7 +183,7 @@ struct myri10ge_slice_state {
 	dma_addr_t fw_stats_bus;
 	int watchdog_tx_done;
 	int watchdog_tx_req;
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	int cached_dca_tag;
 	int cpu;
 	__be32 __iomem *dca_tag;
@@ -215,7 +215,7 @@ struct myri10ge_priv {
 	int msi_enabled;
 	int msix_enabled;
 	struct msix_entry *msix_vectors;
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	int dca_enabled;
 #endif
 	u32 link_state;
@@ -891,7 +891,7 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
 	struct myri10ge_slice_state *ss;
 	int i, status;
 	size_t bytes;
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	unsigned long dca_tag_off;
 #endif
 
@@ -986,7 +986,7 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
 	}
 	put_be32(htonl(mgp->intr_coal_delay), mgp->intr_coal_delay_ptr);
 
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_DCA_OFFSET, &cmd, 0);
 	dca_tag_off = cmd.data0;
 	for (i = 0; i < mgp->num_slices; i++) {
@@ -1025,7 +1025,7 @@ static int myri10ge_reset(struct myri10ge_priv *mgp)
 	return status;
 }
 
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 static void
 myri10ge_write_dca(struct myri10ge_slice_state *ss, int cpu, int tag)
 {
@@ -1458,7 +1458,7 @@ static int myri10ge_poll(struct napi_struct *napi, int budget)
 	struct net_device *netdev = ss->mgp->dev;
 	int work_done;
 
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	if (ss->mgp->dca_enabled)
 		myri10ge_update_dca(ss);
 #endif
@@ -1687,7 +1687,7 @@ static const char myri10ge_gstrings_main_stats[][ETH_GSTRING_LEN] = {
 	"tx_boundary", "WC", "irq", "MSI", "MSIX",
 	"read_dma_bw_MBs", "write_dma_bw_MBs", "read_write_dma_bw_MBs",
 	"serial_number", "watchdog_resets",
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	"dca_capable_firmware", "dca_device_present",
 #endif
 	"link_changes", "link_up", "dropped_link_overflow",
@@ -1766,7 +1766,7 @@ myri10ge_get_ethtool_stats(struct net_device *netdev,
 	data[i++] = (unsigned int)mgp->read_write_dma;
 	data[i++] = (unsigned int)mgp->serial_number;
 	data[i++] = (unsigned int)mgp->watchdog_resets;
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	data[i++] = (unsigned int)(mgp->ss[0].dca_tag != NULL);
 	data[i++] = (unsigned int)(mgp->dca_enabled);
 #endif
@@ -3764,7 +3764,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		dev_err(&pdev->dev, "failed reset\n");
 		goto abort_with_slices;
 	}
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	myri10ge_setup_dca(mgp);
 #endif
 	pci_set_drvdata(pdev, mgp);
@@ -3867,7 +3867,7 @@ static void myri10ge_remove(struct pci_dev *pdev)
 	netdev = mgp->dev;
 	unregister_netdev(netdev);
 
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	myri10ge_teardown_dca(mgp);
 #endif
 	myri10ge_dummy_rdma(mgp, 0);
@@ -3912,7 +3912,7 @@ static struct pci_driver myri10ge_driver = {
 #endif
 };
 
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 static int
 myri10ge_notify_dca(struct notifier_block *nb, unsigned long event, void *p)
 {
@@ -3944,7 +3944,7 @@ static __init int myri10ge_init_module(void)
 		       myri10ge_driver.name, myri10ge_rss_hash);
 		myri10ge_rss_hash = MXGEFW_RSS_HASH_TYPE_SRC_PORT;
 	}
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	dca_register_notify(&myri10ge_dca_notifier);
 #endif
 
@@ -3955,7 +3955,7 @@ module_init(myri10ge_init_module);
 
 static __exit void myri10ge_cleanup_module(void)
 {
-#ifdef CONFIG_DCA
+#if (defined CONFIG_DCA) || (defined CONFIG_DCA_MODULE)
 	dca_unregister_notify(&myri10ge_dca_notifier);
 #endif
 	pci_unregister_driver(&myri10ge_driver);