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    Subject[PATCH][11/26] IB/mthca: mem-free EQ initialization
    Date
    From
    Add code to initialize EQ context properly in both Tavor and mem-free mode.

    Signed-off-by: Roland Dreier <roland@topspin.com>


    --- linux-export.orig/drivers/infiniband/hw/mthca/mthca_eq.c 2005-03-03 14:12:56.154732247 -0800
    +++ linux-export/drivers/infiniband/hw/mthca/mthca_eq.c 2005-03-03 14:12:57.462448386 -0800
    @@ -54,10 +54,10 @@
    u32 flags;
    u64 start;
    u32 logsize_usrpage;
    - u32 pd;
    + u32 tavor_pd; /* reserved for Arbel */
    u8 reserved1[3];
    u8 intr;
    - u32 lost_count;
    + u32 arbel_pd; /* lost_count for Tavor */
    u32 lkey;
    u32 reserved2[2];
    u32 consumer_index;
    @@ -75,6 +75,7 @@
    #define MTHCA_EQ_STATE_ARMED ( 1 << 8)
    #define MTHCA_EQ_STATE_FIRED ( 2 << 8)
    #define MTHCA_EQ_STATE_ALWAYS_ARMED ( 3 << 8)
    +#define MTHCA_EQ_STATE_ARBEL ( 8 << 8)

    enum {
    MTHCA_EVENT_TYPE_COMP = 0x00,
    @@ -467,10 +468,16 @@
    MTHCA_EQ_OWNER_HW |
    MTHCA_EQ_STATE_ARMED |
    MTHCA_EQ_FLAG_TR);
    - eq_context->start = cpu_to_be64(0);
    - eq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24 |
    - dev->driver_uar.index);
    - eq_context->pd = cpu_to_be32(dev->driver_pd.pd_num);
    + if (dev->hca_type == ARBEL_NATIVE)
    + eq_context->flags |= cpu_to_be32(MTHCA_EQ_STATE_ARBEL);
    +
    + eq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24);
    + if (dev->hca_type == ARBEL_NATIVE) {
    + eq_context->arbel_pd = cpu_to_be32(dev->driver_pd.pd_num);
    + } else {
    + eq_context->logsize_usrpage |= cpu_to_be32(dev->driver_uar.index);
    + eq_context->tavor_pd = cpu_to_be32(dev->driver_pd.pd_num);
    + }
    eq_context->intr = intr;
    eq_context->lkey = cpu_to_be32(eq->mr.ibmr.lkey);

    -
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