static int mlx4_ib_alloc_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int nent)
{
int err;
err = mlx4_buf_alloc(dev->dev, nent * sizeof(struct mlx4_cqe),
PAGE_SIZE * 2, &buf->buf);
if (err)
goto out;
err = mlx4_mtt_init(dev->dev, buf->buf.npages, buf->buf.page_shift,
&buf->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev->dev, &buf->mtt, &buf->buf);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev->dev, &buf->mtt);
err_buf:
mlx4_buf_free(dev->dev, nent * sizeof(struct mlx4_cqe),
&buf->buf);
out:
return err;
}
int mlx4_alloc_hwq_res(struct mlx4_dev *dev, struct mlx4_hwq_resources *wqres,
int size, int max_direct)
{
int err;
err = mlx4_db_alloc(dev, &wqres->db, 1);
if (err)
return err;
*wqres->db.db = 0;
err = mlx4_buf_alloc(dev, size, max_direct, &wqres->buf);
if (err)
goto err_db;
err = mlx4_mtt_init(dev, wqres->buf.npages, wqres->buf.page_shift,
&wqres->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev, &wqres->mtt, &wqres->buf);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev, &wqres->mtt);
err_buf:
mlx4_buf_free(dev, size, &wqres->buf);
err_db:
mlx4_db_free(dev, &wqres->db);
return err;
}
static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *context,
struct mlx4_ib_cq_buf *buf, struct ib_umem **umem,
u64 buf_addr, int cqe)
{
int err;
*umem = ib_umem_get(context, buf_addr, cqe * sizeof (struct mlx4_cqe),
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(*umem))
return PTR_ERR(*umem);
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(*umem),
ilog2((*umem)->page_size), &buf->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &buf->mtt, *umem);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev->dev, &buf->mtt);
err_buf:
ib_umem_release(*umem);
return err;
}
static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_udata *udata,
struct mlx4_ib_cq_buf *buf,
struct ib_umem **umem, u64 buf_addr, int cqe)
{
int err;
int cqe_size = dev->dev->caps.cqe_size;
int shift;
int n;
*umem = ib_umem_get(udata, buf_addr, cqe * cqe_size,
IB_ACCESS_LOCAL_WRITE, 1);
if (IS_ERR(*umem))
return PTR_ERR(*umem);
n = ib_umem_page_count(*umem);
shift = mlx4_ib_umem_calc_optimal_mtt_size(*umem, 0, &n);
err = mlx4_mtt_init(dev->dev, n, shift, &buf->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &buf->mtt, *umem);
if (err)
goto err_mtt;
return 0;
err_mtt:
mlx4_mtt_cleanup(dev->dev, &buf->mtt);
err_buf:
ib_umem_release(*umem);
return err;
}
struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
struct ib_srq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx4_ib_dev *dev = to_mdev(pd->device);
struct mlx4_ib_srq *srq;
struct mlx4_wqe_srq_next_seg *next;
struct mlx4_wqe_data_seg *scatter;
u32 cqn;
u16 xrcdn;
int desc_size;
int buf_size;
int err;
int i;
/* Sanity check SRQ size before proceeding */
if (init_attr->attr.max_wr >= dev->dev->caps.max_srq_wqes ||
init_attr->attr.max_sge > dev->dev->caps.max_srq_sge)
return ERR_PTR(-EINVAL);
srq = kmalloc(sizeof *srq, GFP_KERNEL);
if (!srq)
return ERR_PTR(-ENOMEM);
mutex_init(&srq->mutex);
spin_lock_init(&srq->lock);
srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
srq->msrq.max_gs = init_attr->attr.max_sge;
desc_size = max(32UL,
roundup_pow_of_two(sizeof (struct mlx4_wqe_srq_next_seg) +
srq->msrq.max_gs *
sizeof (struct mlx4_wqe_data_seg)));
srq->msrq.wqe_shift = ilog2(desc_size);
buf_size = srq->msrq.max * desc_size;
if (pd->uobject) {
struct mlx4_ib_create_srq ucmd;
if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
err = -EFAULT;
goto err_srq;
}
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
buf_size, 0, 0);
if (IS_ERR(srq->umem)) {
err = PTR_ERR(srq->umem);
goto err_srq;
}
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(srq->umem),
ilog2(srq->umem->page_size), &srq->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &srq->mtt, srq->umem);
if (err)
goto err_mtt;
err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err)
goto err_mtt;
} else {
err = mlx4_db_alloc(dev->dev, &srq->db, 0, GFP_KERNEL);
if (err)
goto err_srq;
*srq->db.db = 0;
if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &srq->buf,
GFP_KERNEL)) {
err = -ENOMEM;
goto err_db;
}
srq->head = 0;
srq->tail = srq->msrq.max - 1;
srq->wqe_ctr = 0;
for (i = 0; i < srq->msrq.max; ++i) {
next = get_wqe(srq, i);
next->next_wqe_index =
cpu_to_be16((i + 1) & (srq->msrq.max - 1));
for (scatter = (void *) (next + 1);
(void *) scatter < (void *) next + desc_size;
++scatter)
scatter->lkey = cpu_to_be32(MLX4_INVALID_LKEY);
}
err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,
&srq->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev->dev, &srq->mtt, &srq->buf, GFP_KERNEL);
if (err)
goto err_mtt;
srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL);
if (!srq->wrid) {
err = -ENOMEM;
goto err_mtt;
}
}
cqn = (init_attr->srq_type == IB_SRQT_XRC) ?
to_mcq(init_attr->ext.xrc.cq)->mcq.cqn : 0;
xrcdn = (init_attr->srq_type == IB_SRQT_XRC) ?
to_mxrcd(init_attr->ext.xrc.xrcd)->xrcdn :
(u16) dev->dev->caps.reserved_xrcds;
err = mlx4_srq_alloc(dev->dev, to_mpd(pd)->pdn, cqn, xrcdn, &srq->mtt,
srq->db.dma, &srq->msrq);
if (err)
goto err_wrid;
srq->msrq.event = mlx4_ib_srq_event;
srq->ibsrq.ext.xrc.srq_num = srq->msrq.srqn;
if (pd->uobject)
if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof (__u32))) {
err = -EFAULT;
goto err_wrid;
}
init_attr->attr.max_wr = srq->msrq.max - 1;
return &srq->ibsrq;
err_wrid:
if (pd->uobject)
mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
else
kfree(srq->wrid);
err_mtt:
mlx4_mtt_cleanup(dev->dev, &srq->mtt);
err_buf:
if (pd->uobject)
ib_umem_release(srq->umem);
else
mlx4_buf_free(dev->dev, buf_size, &srq->buf);
err_db:
if (!pd->uobject)
mlx4_db_free(dev->dev, &srq->db);
err_srq:
kfree(srq);
return ERR_PTR(err);
}
struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
struct ib_srq_init_attr *init_attr,
struct ib_udata *udata)
{
struct mlx4_ib_dev *dev = to_mdev(pd->device);
struct mlx4_ib_srq *srq;
struct mlx4_wqe_srq_next_seg *next;
int desc_size;
int buf_size;
int err;
int i;
if (init_attr->attr.max_wr >= dev->dev->caps.max_srq_wqes ||
init_attr->attr.max_sge > dev->dev->caps.max_srq_sge)
return ERR_PTR(-EINVAL);
srq = kmalloc(sizeof *srq, GFP_KERNEL);
if (!srq)
return ERR_PTR(-ENOMEM);
mutex_init(&srq->mutex);
spin_lock_init(&srq->lock);
srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
srq->msrq.max_gs = init_attr->attr.max_sge;
desc_size = max(32UL,
roundup_pow_of_two(sizeof (struct mlx4_wqe_srq_next_seg) +
srq->msrq.max_gs *
sizeof (struct mlx4_wqe_data_seg)));
srq->msrq.wqe_shift = ilog2(desc_size);
buf_size = srq->msrq.max * desc_size;
if (pd->uobject) {
struct mlx4_ib_create_srq ucmd;
if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
err = -EFAULT;
goto err_srq;
}
srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
buf_size, 0, 0);
if (IS_ERR(srq->umem)) {
err = PTR_ERR(srq->umem);
goto err_srq;
}
err = mlx4_mtt_init(dev->dev, ib_umem_page_count(srq->umem),
ilog2(srq->umem->page_size), &srq->mtt);
if (err)
goto err_buf;
err = mlx4_ib_umem_write_mtt(dev, &srq->mtt, srq->umem);
if (err)
goto err_mtt;
err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
ucmd.db_addr, &srq->db);
if (err)
goto err_mtt;
} else {
err = mlx4_db_alloc(dev->dev, &srq->db, 0);
if (err)
goto err_srq;
*srq->db.db = 0;
if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
err = -ENOMEM;
goto err_db;
}
srq->head = 0;
srq->tail = srq->msrq.max - 1;
srq->wqe_ctr = 0;
for (i = 0; i < srq->msrq.max; ++i) {
next = get_wqe(srq, i);
next->next_wqe_index =
cpu_to_be16((i + 1) & (srq->msrq.max - 1));
}
err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,
&srq->mtt);
if (err)
goto err_buf;
err = mlx4_buf_write_mtt(dev->dev, &srq->mtt, &srq->buf);
if (err)
goto err_mtt;
srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL);
if (!srq->wrid) {
err = -ENOMEM;
goto err_mtt;
}
}
err = mlx4_srq_alloc(dev->dev, to_mpd(pd)->pdn, &srq->mtt,
srq->db.dma, &srq->msrq);
if (err)
goto err_wrid;
srq->msrq.event = mlx4_ib_srq_event;
if (pd->uobject)
if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof (__u32))) {
err = -EFAULT;
goto err_wrid;
}
init_attr->attr.max_wr = srq->msrq.max - 1;
return &srq->ibsrq;
err_wrid:
if (pd->uobject)
mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
else
kfree(srq->wrid);
err_mtt:
mlx4_mtt_cleanup(dev->dev, &srq->mtt);
err_buf:
if (pd->uobject)
ib_umem_release(srq->umem);
else
mlx4_buf_free(dev->dev, buf_size, &srq->buf);
err_db:
if (!pd->uobject)
mlx4_db_free(dev->dev, &srq->db);
err_srq:
kfree(srq);
return ERR_PTR(err);
}
/* CQ allocation and modification test */
int cq_test(struct mlx4_dev *dev, char* log) {
struct mlx4_cq *cq;
struct mlx4_mtt *mtt;
struct mlx4_uar *uar;
struct mlx4_db *db;
int err;
int expected_rc = 0;
int collapsed = 0;
int timestamp_en = 0;
int npages = 1;
int page_shift = get_order(dev->caps.cqe_size) + PAGE_SHIFT;
int ret_val = FAIL;
int vector = 0;
int nent = 2 * MLX4_NUM_TUNNEL_BUFS;
u16 count = 88;
u16 period = 0;
u64 mtt_addr;
uar = malloc(sizeof *uar ,M_CQ_VAL, M_WAITOK );
VL_CHECK_MALLOC(uar, goto without_free, log);
mtt = malloc(sizeof *mtt ,M_CQ_VAL, M_WAITOK );
VL_CHECK_MALLOC(mtt, goto free_uar, log);
cq = malloc(sizeof *cq ,M_CQ_VAL, M_WAITOK );
VL_CHECK_MALLOC(cq, goto free_mtt, log);
db = malloc(sizeof *db ,M_CQ_VAL, M_WAITOK );
VL_CHECK_MALLOC(db, goto free_cq, log);
err = mlx4_mtt_init(dev, npages, page_shift, mtt);
VL_CHECK_RC(err, expected_rc, goto free_db , log, "failed to initialize MTT");
uprintf("MTT was initialized successfuly\n");
VL_CHECK_INT_VALUE(mtt->order, 0, goto cleanup_mtt, log, "mtt->order is wrong");
VL_CHECK_INT_VALUE(mtt->page_shift, 12, goto cleanup_mtt, log, "mtt->page_shift is wrong");
mtt_addr = mlx4_mtt_addr(dev, mtt);
uprintf("MTT address is: %lu\n", mtt_addr);
err = mlx4_uar_alloc(dev, uar);
VL_CHECK_RC(err, expected_rc, goto cleanup_mtt , log, "failed to allocate UAR");
uprintf("UAR was allocated successfuly\n");
err = mlx4_db_alloc(dev, db, 1);
VL_CHECK_RC(err, expected_rc, goto dealloc_uar , log, "failed to allocate DB");
uprintf("DB was allocated successfuly\n");
err = mlx4_cq_alloc(dev, nent, mtt, uar, db->dma, cq, vector, collapsed, timestamp_en);
VL_CHECK_RC(err, expected_rc, goto dealloc_db , log, "failed to allocate CQ");
uprintf("CQ allocated successfuly\n");
VL_CHECK_INT_VALUE(cq->cons_index, 0, goto dealloc_cq, log, "cq->cons_index is wrong");
VL_CHECK_INT_VALUE(cq->arm_sn, 1, goto dealloc_cq, log, "cq->arm_sn is wrong");
uprintf("cq->cqn = %d, cq->uar->pfn = %lu, cq->eqn = %d, cq->irq = %u\n", cq->cqn, cq->uar->pfn, cq->eqn, cq->irq );
VL_CHECK_UNSIGNED_INT_VALUE(cq->cons_index, (unsigned int)0, goto dealloc_cq, log, "cq->cons_index != 0");
VL_CHECK_INT_VALUE(cq->arm_sn, 1, goto dealloc_cq, log, "cq->arm_sn != 1");
err = mlx4_cq_modify(dev, cq, count, period);
VL_CHECK_RC(err, expected_rc, goto dealloc_cq , log, "failed to modify CQ");
uprintf("CQ was modifyed successfuly\n");
ret_val = SUCCESS;
dealloc_cq:
mlx4_cq_free(dev, cq);
uprintf("CQ was freed successfuly\n");
dealloc_db:
mlx4_db_free(dev, db);
uprintf( "DB free was successful\n");
dealloc_uar:
mlx4_uar_free(dev,uar);
uprintf("UAR free was successful\n");
cleanup_mtt:
mlx4_mtt_cleanup(dev, mtt);
uprintf( "mtt clean-up was successful\n");
free_db:
free(db, M_CQ_VAL);
free_cq:
free(cq, M_CQ_VAL);
free_mtt:
free(mtt, M_CQ_VAL);
free_uar:
free(uar, M_CQ_VAL);
without_free:
return ret_val;
}
/*
static void mlx4_unmap_uar(struct mlx4_priv *priv)
{
struct mlx4_priv *priv = mlx4_priv(&priv->dev);
int i;
for (i = 0; i < mlx4_num_eq_uar(&priv->dev); ++i)
if (priv->eq_table.uar_map[i]) {
iounmap(priv->eq_table.uar_map[i]);
priv->eq_table.uar_map[i] = NULL;
}
}
*/
static int mlx4_create_eq(struct mlx4_priv *priv, int nent, u8 intr,
struct mlx4_eq *eq) {
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_eq_context *eq_context;
int npages;
u64 *dma_list = NULL;
genpaddr_t t = 0;
u64 mtt_addr;
int err = -ENOMEM;
int i;
eq->priv = priv;
eq->nent = roundup_pow_of_two(max(nent, 2));
/* CX3 is capable of extending the CQE\EQE from 32 to 64 bytes*/
npages = PAGE_ALIGN(
eq->nent * (MLX4_EQ_ENTRY_SIZE << priv->dev.caps.eqe_factor))
/ BASE_PAGE_SIZE;
eq->page_list = malloc(npages * sizeof *eq->page_list);
if (!eq->page_list)
goto err_out;
for (i = 0; i < npages; ++i)
eq->page_list[i].buf = NULL;
dma_list = malloc(npages * sizeof *dma_list);
if (!dma_list)
goto err_out_free;
mailbox = mlx4_alloc_cmd_mailbox();
if (IS_ERR(mailbox))
goto err_out_free;
eq_context = mailbox->buf;
for (i = 0; i < npages; ++i) {
eq->page_list[i].buf = dma_alloc(BASE_PAGE_SIZE, &t);
if (!eq->page_list[i].buf)
goto err_out_free_pages;
dma_list[i] = t;
eq->page_list[i].map = t;
memset(eq->page_list[i].buf, 0, BASE_PAGE_SIZE);
}
eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap);
if (eq->eqn == -1)
goto err_out_free_pages;
eq->doorbell = mlx4_get_eq_uar(priv, eq);
if (!eq->doorbell) {
err = -ENOMEM;
goto err_out_free_eq;
}
err = mlx4_mtt_init(&priv->dev, npages, PAGE_SHIFT, &eq->mtt);
if (err)
goto err_out_free_eq;
err = mlx4_write_mtt(&priv->dev, &eq->mtt, 0, npages, dma_list);
if (err)
goto err_out_free_mtt;
memset(eq_context, 0, sizeof *eq_context);
eq_context->flags = cpu_to_be32(MLX4_EQ_STATUS_OK |
MLX4_EQ_STATE_ARMED);
eq_context->log_eq_size = ilog2(eq->nent);
eq_context->intr = intr;
eq_context->log_page_size = PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT;
/*printf("mtt_addr: %lx\n", mlx4_mtt_addr(&priv->dev, &eq->mtt));
printf("off: %d\n", eq->mtt.offset);
printf("size: %d\n", priv->dev.caps.mtt_entry_sz);*/
mtt_addr = mlx4_mtt_addr(&priv->dev, &eq->mtt);
eq_context->mtt_base_addr_h = mtt_addr >> 32;
eq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
err = mlx4_SW2HW_EQ(priv, mailbox, eq->eqn);
if (err) {
MLX4_DEBUG("SW2HW_EQ failed (%d)\n", err);
goto err_out_free_mtt;
}
free(dma_list);
mlx4_free_cmd_mailbox(mailbox);
eq->cons_index = 0;
return err;
/*TODO*/
err_out_free_mtt: /*mlx4_mtt_cleanup(&priv->dev, &eq->mtt);*/
err_out_free_eq: /*mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn,
MLX4_USE_RR);*/
err_out_free_pages: /*for (i = 0; i < npages; ++i)
if (eq->page_list[i].buf)
dma_free(&priv->dev.pdev->dev, PAGE_SIZE,
eq->page_list[i].buf, eq->page_list[i].map);*/
mlx4_free_cmd_mailbox(mailbox);
err_out_free: free(eq->page_list);
free(dma_list);
err_out: return err;
}
