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Subject[git pull] please pull infiniband.git
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Date
Linus, please pull from

master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

This tree is also available from kernel.org mirrors at:

git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

This has a couple of mthca driver bug fixes:

Michael S. Tsirkin:
IB/mthca: restore missing PCI registers after reset
IB/mthca: memfree completion with error FW bug workaround

drivers/infiniband/hw/mthca/mthca_cq.c | 11 +++++
drivers/infiniband/hw/mthca/mthca_reset.c | 59 +++++++++++++++++++++++++++++
2 files changed, 69 insertions(+), 1 deletions(-)


diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c
index 205854e..87a8f11 100644
--- a/drivers/infiniband/hw/mthca/mthca_cq.c
+++ b/drivers/infiniband/hw/mthca/mthca_cq.c
@@ -540,8 +540,17 @@ static inline int mthca_poll_one(struct
entry->wr_id = srq->wrid[wqe_index];
mthca_free_srq_wqe(srq, wqe);
} else {
+ s32 wqe;
wq = &(*cur_qp)->rq;
- wqe_index = be32_to_cpu(cqe->wqe) >> wq->wqe_shift;
+ wqe = be32_to_cpu(cqe->wqe);
+ wqe_index = wqe >> wq->wqe_shift;
+ /*
+ * WQE addr == base - 1 might be reported in receive completion
+ * with error instead of (rq size - 1) by Sinai FW 1.0.800 and
+ * Arbel FW 5.1.400. This bug should be fixed in later FW revs.
+ */
+ if (unlikely(wqe_index < 0))
+ wqe_index = wq->max - 1;
entry->wr_id = (*cur_qp)->wrid[wqe_index];
}

diff --git a/drivers/infiniband/hw/mthca/mthca_reset.c b/drivers/infiniband/hw/mthca/mthca_reset.c
index df5e494..f4fddd5 100644
--- a/drivers/infiniband/hw/mthca/mthca_reset.c
+++ b/drivers/infiniband/hw/mthca/mthca_reset.c
@@ -49,6 +49,12 @@ 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 swab32(1)
@@ -110,6 +116,9 @@ #define MTHCA_RESET_VALUE swab32(1)
}
}

+ 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) {
@@ -129,6 +138,13 @@ #define MTHCA_RESET_VALUE swab32(1)
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 */
@@ -178,6 +194,20 @@ #define MTHCA_RESET_VALUE swab32(1)
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.
@@ -203,6 +233,35 @@ 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;
-
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