Merge branch 'misc' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc...

[pandora-kernel.git] / drivers / infiniband / hw / mthca / mthca_main.c

diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 8b00d9a..9b9ff7b 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -52,6 +52,14 @@ MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(DRV_VERSION);
 
+#ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
+
+int mthca_debug_level = 0;
+module_param_named(debug_level, mthca_debug_level, int, 0644);
+MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
+
+#endif /* CONFIG_INFINIBAND_MTHCA_DEBUG */
+
 #ifdef CONFIG_PCI_MSI
 
 static int msi_x = 0;
@@ -69,6 +77,10 @@ MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero");
 
 #endif /* CONFIG_PCI_MSI */
 
+static int tune_pci = 0;
+module_param(tune_pci, int, 0444);
+MODULE_PARM_DESC(tune_pci, "increase PCI burst from the default set by BIOS if nonzero");
+
 static const char mthca_version[] __devinitdata =
        DRV_NAME ": Mellanox InfiniBand HCA driver v"
        DRV_VERSION " (" DRV_RELDATE ")\n";
@@ -90,6 +102,9 @@ static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
        int cap;
        u16 val;
 
+       if (!tune_pci)
+               return 0;
+
        /* First try to max out Read Byte Count */
        cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
        if (cap) {
@@ -155,6 +170,13 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim
                return -ENODEV;
        }
 
+       if (dev_lim->uar_size > pci_resource_len(mdev->pdev, 2)) {
+               mthca_err(mdev, "HCA reported UAR size of 0x%x bigger than "
+                         "PCI resource 2 size of 0x%lx, aborting.\n",
+                         dev_lim->uar_size, pci_resource_len(mdev->pdev, 2));
+               return -ENODEV;
+       }
+
        mdev->limits.num_ports          = dev_lim->num_ports;
        mdev->limits.vl_cap             = dev_lim->max_vl;
        mdev->limits.mtu_cap            = dev_lim->max_mtu;
@@ -169,6 +191,7 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim
        mdev->limits.reserved_srqs      = dev_lim->reserved_srqs;
        mdev->limits.reserved_eecs      = dev_lim->reserved_eecs;
        mdev->limits.max_desc_sz        = dev_lim->max_desc_sz;
+       mdev->limits.max_srq_sge        = mthca_max_srq_sge(mdev);
        /*
         * Subtract 1 from the limit because we need to allocate a
         * spare CQE so the HCA HW can tell the difference between an
@@ -184,6 +207,18 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim
        mdev->limits.port_width_cap     = dev_lim->max_port_width;
        mdev->limits.page_size_cap      = ~(u32) (dev_lim->min_page_sz - 1);
        mdev->limits.flags              = dev_lim->flags;
+       /*
+        * For old FW that doesn't return static rate support, use a
+        * value of 0x3 (only static rate values of 0 or 1 are handled),
+        * except on Sinai, where even old FW can handle static rate
+        * values of 2 and 3.
+        */
+       if (dev_lim->stat_rate_support)
+               mdev->limits.stat_rate_support = dev_lim->stat_rate_support;
+       else if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
+               mdev->limits.stat_rate_support = 0xf;
+       else
+               mdev->limits.stat_rate_support = 0x3;
 
        /* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
           May be doable since hardware supports it for SRQ.
@@ -928,13 +963,19 @@ enum {
 
 static struct {
        u64 latest_fw;
-       int is_memfree;
-       int is_pcie;
+       u32 flags;
 } mthca_hca_table[] = {
-       [TAVOR]        = { .latest_fw = MTHCA_FW_VER(3, 3, 3), .is_memfree = 0, .is_pcie = 0 },
-       [ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 7, 0), .is_memfree = 0, .is_pcie = 1 },
-       [ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 1, 0), .is_memfree = 1, .is_pcie = 1 },
-       [SINAI]        = { .latest_fw = MTHCA_FW_VER(1, 0, 1), .is_memfree = 1, .is_pcie = 1 }
+       [TAVOR]        = { .latest_fw = MTHCA_FW_VER(3, 4, 0),
+                          .flags     = 0 },
+       [ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 7, 400),
+                          .flags     = MTHCA_FLAG_PCIE },
+       [ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 1, 0),
+                          .flags     = MTHCA_FLAG_MEMFREE |
+                                       MTHCA_FLAG_PCIE },
+       [SINAI]        = { .latest_fw = MTHCA_FW_VER(1, 0, 800),
+                          .flags     = MTHCA_FLAG_MEMFREE |
+                                       MTHCA_FLAG_PCIE    |
+                                       MTHCA_FLAG_SINAI_OPT }
 };
 
 static int __devinit mthca_init_one(struct pci_dev *pdev,
@@ -976,8 +1017,7 @@ static int __devinit mthca_init_one(struct pci_dev *pdev,
                err = -ENODEV;
                goto err_disable_pdev;
        }
-       if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) ||
-           pci_resource_len(pdev, 2) != 1 << 23) {
+       if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
                dev_err(&pdev->dev, "Missing UAR, aborting.\n");
                err = -ENODEV;
                goto err_disable_pdev;
@@ -1025,12 +1065,9 @@ static int __devinit mthca_init_one(struct pci_dev *pdev,
 
        mdev->pdev = pdev;
 
+       mdev->mthca_flags = mthca_hca_table[id->driver_data].flags;
        if (ddr_hidden)
                mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN;
-       if (mthca_hca_table[id->driver_data].is_memfree)
-               mdev->mthca_flags |= MTHCA_FLAG_MEMFREE;
-       if (mthca_hca_table[id->driver_data].is_pcie)
-               mdev->mthca_flags |= MTHCA_FLAG_PCIE;
 
        /*
         * Now reset the HCA before we touch the PCI capabilities or