X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Finfiniband%2Fhw%2Fmthca%2Fmthca_reset.c;h=91934f2d9dbafeedb0e8cba7a180957ec4baa885;hb=refs%2Fheads%2Fvserver;hp=35df81c85df26fe9b859c85c175c28f5e6fc0b6e;hpb=87fc8d1bb10cd459024a742c6a10961fefcef18f;p=linux-2.6.git

diff --git a/drivers/infiniband/hw/mthca/mthca_reset.c b/drivers/infiniband/hw/mthca/mthca_reset.c
index 35df81c85..91934f2d9 100644
--- a/drivers/infiniband/hw/mthca/mthca_reset.c
+++ b/drivers/infiniband/hw/mthca/mthca_reset.c
@@ -32,11 +32,11 @@
  * $Id: mthca_reset.c 1349 2004-12-16 21:09:43Z roland $
  */
 
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 
 #include "mthca_dev.h"
 #include "mthca_cmd.h"
@@ -48,9 +48,15 @@ int mthca_reset(struct mthca_dev *mdev)
 	u32 *hca_header    = NULL;
 	u32 *bridge_header = NULL;
 	struct pci_dev *bridge = NULL;
+	int bridge_pcix_cap = 0;
+	int hca_pcie_cap = 0;
+	int hca_pcix_cap = 0;
+
+	u16 devctl;
+	u16 linkctl;
 
 #define MTHCA_RESET_OFFSET 0xf0010
-#define MTHCA_RESET_VALUE  cpu_to_be32(1)
+#define MTHCA_RESET_VALUE  swab32(1)
 
 	/*
 	 * Reset the chip.  This is somewhat ugly because we have to
@@ -63,7 +69,7 @@ int mthca_reset(struct mthca_dev *mdev)
 	 * header as well.
 	 */
 
-	if (mdev->hca_type == TAVOR) {
+	if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE)) {
 		/* Look for the bridge -- its device ID will be 2 more
 		   than HCA's device ID. */
 		while ((bridge = pci_get_device(mdev->pdev->vendor,
@@ -71,8 +77,8 @@ int mthca_reset(struct mthca_dev *mdev)
 						bridge)) != NULL) {
 			if (bridge->hdr_type    == PCI_HEADER_TYPE_BRIDGE &&
 			    bridge->subordinate == mdev->pdev->bus) {
-				mthca_dbg(mdev, "Found bridge: %s (%s)\n",
-					  pci_pretty_name(bridge), pci_name(bridge));
+				mthca_dbg(mdev, "Found bridge: %s\n",
+					  pci_name(bridge));
 				break;
 			}
 		}
@@ -83,8 +89,8 @@ int mthca_reset(struct mthca_dev *mdev)
 			 * assume we're in no-bridge mode and hope for
 			 * the best.
 			 */
-			mthca_warn(mdev, "No bridge found for %s (%s)\n",
-				  pci_pretty_name(mdev->pdev), pci_name(mdev->pdev));
+			mthca_warn(mdev, "No bridge found for %s\n",
+				  pci_name(mdev->pdev));
 		}
 
 	}
@@ -109,6 +115,9 @@ int mthca_reset(struct mthca_dev *mdev)
 		}
 	}
 
+	hca_pcix_cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
+	hca_pcie_cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
+
 	if (bridge) {
 		bridge_header = kmalloc(256, GFP_KERNEL);
 		if (!bridge_header) {
@@ -128,6 +137,13 @@ int mthca_reset(struct mthca_dev *mdev)
 				goto out;
 			}
 		}
+		bridge_pcix_cap = pci_find_capability(bridge, PCI_CAP_ID_PCIX);
+		if (!bridge_pcix_cap) {
+				err = -ENODEV;
+				mthca_err(mdev, "Couldn't locate HCA bridge "
+					  "PCI-X capability, aborting.\n");
+				goto out;
+		}
 	}
 
 	/* actually hit reset */
@@ -177,6 +193,20 @@ int mthca_reset(struct mthca_dev *mdev)
 good:
 	/* Now restore the PCI headers */
 	if (bridge) {
+		if (pci_write_config_dword(bridge, bridge_pcix_cap + 0x8,
+				 bridge_header[(bridge_pcix_cap + 0x8) / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA bridge Upstream "
+				  "split transaction control, aborting.\n");
+			goto out;
+		}
+		if (pci_write_config_dword(bridge, bridge_pcix_cap + 0xc,
+				 bridge_header[(bridge_pcix_cap + 0xc) / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA bridge Downstream "
+				  "split transaction control, aborting.\n");
+			goto out;
+		}
 		/*
 		 * Bridge control register is at 0x3e, so we'll
 		 * naturally restore it last in this loop.
@@ -202,6 +232,35 @@ good:
 		}
 	}
 
+	if (hca_pcix_cap) {
+		if (pci_write_config_dword(mdev->pdev, hca_pcix_cap,
+				 hca_header[hca_pcix_cap / 4])) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI-X "
+				  "command register, aborting.\n");
+			goto out;
+		}
+	}
+
+	if (hca_pcie_cap) {
+		devctl = hca_header[(hca_pcie_cap + PCI_EXP_DEVCTL) / 4];
+		if (pci_write_config_word(mdev->pdev, hca_pcie_cap + PCI_EXP_DEVCTL,
+					   devctl)) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI Express "
+				  "Device Control register, aborting.\n");
+			goto out;
+		}
+		linkctl = hca_header[(hca_pcie_cap + PCI_EXP_LNKCTL) / 4];
+		if (pci_write_config_word(mdev->pdev, hca_pcie_cap + PCI_EXP_LNKCTL,
+					   linkctl)) {
+			err = -ENODEV;
+			mthca_err(mdev, "Couldn't restore HCA PCI Express "
+				  "Link control register, aborting.\n");
+			goto out;
+		}
+	}
+
 	for (i = 0; i < 16; ++i) {
 		if (i * 4 == PCI_COMMAND)
 			continue;