in hw/mthca/mthca_cmd.c [988:1238]
int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
struct mthca_dev_lim *dev_lim)
{
struct mthca_mailbox *mailbox;
u32 *outbox;
u8 field;
u16 size;
u16 stat_rate;
int err;
#define QUERY_DEV_LIM_OUT_SIZE 0x100
#define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET 0x10
#define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET 0x11
#define QUERY_DEV_LIM_RSVD_QP_OFFSET 0x12
#define QUERY_DEV_LIM_MAX_QP_OFFSET 0x13
#define QUERY_DEV_LIM_RSVD_SRQ_OFFSET 0x14
#define QUERY_DEV_LIM_MAX_SRQ_OFFSET 0x15
#define QUERY_DEV_LIM_RSVD_EEC_OFFSET 0x16
#define QUERY_DEV_LIM_MAX_EEC_OFFSET 0x17
#define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET 0x19
#define QUERY_DEV_LIM_RSVD_CQ_OFFSET 0x1a
#define QUERY_DEV_LIM_MAX_CQ_OFFSET 0x1b
#define QUERY_DEV_LIM_MAX_MPT_OFFSET 0x1d
#define QUERY_DEV_LIM_RSVD_EQ_OFFSET 0x1e
#define QUERY_DEV_LIM_MAX_EQ_OFFSET 0x1f
#define QUERY_DEV_LIM_RSVD_MTT_OFFSET 0x20
#define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET 0x21
#define QUERY_DEV_LIM_RSVD_MRW_OFFSET 0x22
#define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET 0x23
#define QUERY_DEV_LIM_MAX_AV_OFFSET 0x27
#define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET 0x29
#define QUERY_DEV_LIM_MAX_RES_QP_OFFSET 0x2b
#define QUERY_DEV_LIM_MAX_RDMA_OFFSET 0x2f
#define QUERY_DEV_LIM_RSZ_SRQ_OFFSET 0x33
#define QUERY_DEV_LIM_ACK_DELAY_OFFSET 0x35
#define QUERY_DEV_LIM_MTU_WIDTH_OFFSET 0x36
#define QUERY_DEV_LIM_VL_PORT_OFFSET 0x37
#define QUERY_DEV_LIM_MAX_GID_OFFSET 0x3b
#define QUERY_DEV_LIM_RATE_SUPPORT_OFFSET 0x3c
#define QUERY_DEV_LIM_MAX_PKEY_OFFSET 0x3f
#define QUERY_DEV_LIM_FLAGS_OFFSET 0x44
#define QUERY_DEV_LIM_RSVD_UAR_OFFSET 0x48
#define QUERY_DEV_LIM_UAR_SZ_OFFSET 0x49
#define QUERY_DEV_LIM_PAGE_SZ_OFFSET 0x4b
#define QUERY_DEV_LIM_MAX_SG_OFFSET 0x51
#define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET 0x52
#define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET 0x55
#define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
#define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET 0x61
#define QUERY_DEV_LIM_RSVD_MCG_OFFSET 0x62
#define QUERY_DEV_LIM_MAX_MCG_OFFSET 0x63
#define QUERY_DEV_LIM_RSVD_PD_OFFSET 0x64
#define QUERY_DEV_LIM_MAX_PD_OFFSET 0x65
#define QUERY_DEV_LIM_RSVD_RDD_OFFSET 0x66
#define QUERY_DEV_LIM_MAX_RDD_OFFSET 0x67
#define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET 0x80
#define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET 0x82
#define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET 0x84
#define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET 0x86
#define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET 0x88
#define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET 0x8a
#define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET 0x8c
#define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET 0x8e
#define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET 0x90
#define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET 0x92
#define QUERY_DEV_LIM_PBL_SZ_OFFSET 0x96
#define QUERY_DEV_LIM_BMME_FLAGS_OFFSET 0x97
#define QUERY_DEV_LIM_RSVD_LKEY_OFFSET 0x98
#define QUERY_DEV_LIM_LAMR_OFFSET 0x9f
#define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET 0xa0
mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
if (IS_ERR(mailbox))
return PTR_ERR(mailbox);
outbox = mailbox->buf;
err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
CMD_TIME_CLASS_A);
if (err)
goto out;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
dev_lim->reserved_qps = 1 << (field & 0xf);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
dev_lim->max_qps = 1 << (field & 0x1f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
dev_lim->reserved_srqs = 1 << (field >> 4);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
dev_lim->max_srqs = 1 << (field & 0x1f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
dev_lim->reserved_eecs = 1 << (field & 0xf);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
dev_lim->max_eecs = 1 << (field & 0x1f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
dev_lim->max_cq_sz = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
dev_lim->reserved_cqs = 1 << (field & 0xf);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
dev_lim->max_cqs = 1 << (field & 0x1f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
dev_lim->max_mpts = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
dev_lim->reserved_eqs = 1 << (field & 0xf);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
dev_lim->max_eqs = 1 << (field & 0x7);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
if (mthca_is_memfree(dev))
dev_lim->reserved_mtts = ALIGN((1 << (field >> 4)) * sizeof(u64),
dev->limits.mtt_seg_size) / dev->limits.mtt_seg_size;
else
dev_lim->reserved_mtts = 1 << (field >> 4);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
dev_lim->max_mrw_sz = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
dev_lim->reserved_mrws = 1 << (field & 0xf);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
dev_lim->max_mtt_seg = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
dev_lim->max_rdma_global = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
dev_lim->local_ca_ack_delay = field & 0x1f;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
dev_lim->max_mtu = field >> 4;
dev_lim->max_port_width = field & 0xf;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
dev_lim->max_vl = field >> 4;
dev_lim->num_ports = field & 0xf;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
dev_lim->max_gids = 1 << (field & 0xf);
MTHCA_GET(stat_rate, outbox, QUERY_DEV_LIM_RATE_SUPPORT_OFFSET);
dev_lim->stat_rate_support = stat_rate;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
dev_lim->max_pkeys = 1 << (field & 0xf);
MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
dev_lim->reserved_uars = field >> 4;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
dev_lim->min_page_sz = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
dev_lim->max_sg = field;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
dev_lim->max_desc_sz = size;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
dev_lim->max_qp_per_mcg = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
dev_lim->reserved_mgms = field & 0xf;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
dev_lim->max_mcgs = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
dev_lim->reserved_pds = field >> 4;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
dev_lim->max_pds = 1 << (field & 0x3f);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
dev_lim->reserved_rdds = field >> 4;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
dev_lim->max_rdds = 1 << (field & 0x3f);
MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
dev_lim->eec_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
dev_lim->qpc_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
dev_lim->eeec_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
dev_lim->eqpc_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
dev_lim->eqc_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
dev_lim->cqc_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
dev_lim->srq_entry_sz = size;
MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
dev_lim->uar_scratch_entry_sz = size;
if (mthca_is_memfree(dev)) {
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
dev_lim->max_srq_sz = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
dev_lim->max_qp_sz = 1 << field;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
dev_lim->hca.arbel.resize_srq = field & 1;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET);
dev_lim->max_desc_sz = min_t(int, size, dev_lim->max_desc_sz);
MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
dev_lim->mpt_entry_sz = size;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
dev_lim->hca.arbel.lam_required = field & 1;
MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
if (dev_lim->hca.arbel.bmme_flags & 1)
mthca_dbg(dev, "Base MM extensions: yes "
"(flags %d, max PBL %d, rsvd L_Key %08x)\n",
dev_lim->hca.arbel.bmme_flags,
dev_lim->hca.arbel.max_pbl_sz,
dev_lim->hca.arbel.reserved_lkey);
else
mthca_dbg(dev, "Base MM extensions: no\n");
mthca_dbg(dev, "Max ICM size %lld MB\n",
(unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
} else {
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
dev_lim->max_srq_sz = (1 << field) - 1;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
dev_lim->max_qp_sz = (1 << field) - 1;
MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
}
mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
dev_lim->reserved_mrws, dev_lim->reserved_mtts);
mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
dev_lim->max_pds, dev_lim->reserved_mgms);
mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
out:
mthca_free_mailbox(dev, mailbox);
return err;
}