[SCSI] bfa: Brocade BFA FC SCSI driver
Add new driver for Brocade Hardware
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/bfa_fcxp.c b/drivers/scsi/bfa/bfa_fcxp.c
new file mode 100644
index 0000000..4754a0e
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_fcxp.c
@@ -0,0 +1,782 @@
+/*
+ * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <bfa.h>
+#include <bfi/bfi_uf.h>
+#include <cs/bfa_debug.h>
+
+BFA_TRC_FILE(HAL, FCXP);
+BFA_MODULE(fcxp);
+
+/**
+ * forward declarations
+ */
+static void __bfa_fcxp_send_cbfn(void *cbarg, bfa_boolean_t complete);
+static void hal_fcxp_rx_plog(struct bfa_s *bfa, struct bfa_fcxp_s *fcxp,
+ struct bfi_fcxp_send_rsp_s *fcxp_rsp);
+static void hal_fcxp_tx_plog(struct bfa_s *bfa, u32 reqlen,
+ struct bfa_fcxp_s *fcxp, struct fchs_s *fchs);
+static void bfa_fcxp_qresume(void *cbarg);
+static void bfa_fcxp_queue(struct bfa_fcxp_s *fcxp,
+ struct bfi_fcxp_send_req_s *send_req);
+
+/**
+ * fcxp_pvt BFA FCXP private functions
+ */
+
+static void
+claim_fcxp_req_rsp_mem(struct bfa_fcxp_mod_s *mod, struct bfa_meminfo_s *mi)
+{
+ u8 *dm_kva = NULL;
+ u64 dm_pa;
+ u32 buf_pool_sz;
+
+ dm_kva = bfa_meminfo_dma_virt(mi);
+ dm_pa = bfa_meminfo_dma_phys(mi);
+
+ buf_pool_sz = mod->req_pld_sz * mod->num_fcxps;
+
+ /*
+ * Initialize the fcxp req payload list
+ */
+ mod->req_pld_list_kva = dm_kva;
+ mod->req_pld_list_pa = dm_pa;
+ dm_kva += buf_pool_sz;
+ dm_pa += buf_pool_sz;
+ bfa_os_memset(mod->req_pld_list_kva, 0, buf_pool_sz);
+
+ /*
+ * Initialize the fcxp rsp payload list
+ */
+ buf_pool_sz = mod->rsp_pld_sz * mod->num_fcxps;
+ mod->rsp_pld_list_kva = dm_kva;
+ mod->rsp_pld_list_pa = dm_pa;
+ dm_kva += buf_pool_sz;
+ dm_pa += buf_pool_sz;
+ bfa_os_memset(mod->rsp_pld_list_kva, 0, buf_pool_sz);
+
+ bfa_meminfo_dma_virt(mi) = dm_kva;
+ bfa_meminfo_dma_phys(mi) = dm_pa;
+}
+
+static void
+claim_fcxps_mem(struct bfa_fcxp_mod_s *mod, struct bfa_meminfo_s *mi)
+{
+ u16 i;
+ struct bfa_fcxp_s *fcxp;
+
+ fcxp = (struct bfa_fcxp_s *) bfa_meminfo_kva(mi);
+ bfa_os_memset(fcxp, 0, sizeof(struct bfa_fcxp_s) * mod->num_fcxps);
+
+ INIT_LIST_HEAD(&mod->fcxp_free_q);
+ INIT_LIST_HEAD(&mod->fcxp_active_q);
+
+ mod->fcxp_list = fcxp;
+
+ for (i = 0; i < mod->num_fcxps; i++) {
+ fcxp->fcxp_mod = mod;
+ fcxp->fcxp_tag = i;
+
+ list_add_tail(&fcxp->qe, &mod->fcxp_free_q);
+ bfa_reqq_winit(&fcxp->reqq_wqe, bfa_fcxp_qresume, fcxp);
+ fcxp->reqq_waiting = BFA_FALSE;
+
+ fcxp = fcxp + 1;
+ }
+
+ bfa_meminfo_kva(mi) = (void *)fcxp;
+}
+
+static void
+bfa_fcxp_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *ndm_len,
+ u32 *dm_len)
+{
+ u16 num_fcxp_reqs = cfg->fwcfg.num_fcxp_reqs;
+
+ if (num_fcxp_reqs == 0)
+ return;
+
+ /*
+ * Account for req/rsp payload
+ */
+ *dm_len += BFA_FCXP_MAX_IBUF_SZ * num_fcxp_reqs;
+ if (cfg->drvcfg.min_cfg)
+ *dm_len += BFA_FCXP_MAX_IBUF_SZ * num_fcxp_reqs;
+ else
+ *dm_len += BFA_FCXP_MAX_LBUF_SZ * num_fcxp_reqs;
+
+ /*
+ * Account for fcxp structs
+ */
+ *ndm_len += sizeof(struct bfa_fcxp_s) * num_fcxp_reqs;
+}
+
+static void
+bfa_fcxp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
+ struct bfa_meminfo_s *meminfo, struct bfa_pcidev_s *pcidev)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+
+ bfa_os_memset(mod, 0, sizeof(struct bfa_fcxp_mod_s));
+ mod->bfa = bfa;
+ mod->num_fcxps = cfg->fwcfg.num_fcxp_reqs;
+
+ /**
+ * Initialize FCXP request and response payload sizes.
+ */
+ mod->req_pld_sz = mod->rsp_pld_sz = BFA_FCXP_MAX_IBUF_SZ;
+ if (!cfg->drvcfg.min_cfg)
+ mod->rsp_pld_sz = BFA_FCXP_MAX_LBUF_SZ;
+
+ INIT_LIST_HEAD(&mod->wait_q);
+
+ claim_fcxp_req_rsp_mem(mod, meminfo);
+ claim_fcxps_mem(mod, meminfo);
+}
+
+static void
+bfa_fcxp_initdone(struct bfa_s *bfa)
+{
+}
+
+static void
+bfa_fcxp_detach(struct bfa_s *bfa)
+{
+}
+
+static void
+bfa_fcxp_start(struct bfa_s *bfa)
+{
+}
+
+static void
+bfa_fcxp_stop(struct bfa_s *bfa)
+{
+}
+
+static void
+bfa_fcxp_iocdisable(struct bfa_s *bfa)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+ struct bfa_fcxp_s *fcxp;
+ struct list_head *qe, *qen;
+
+ list_for_each_safe(qe, qen, &mod->fcxp_active_q) {
+ fcxp = (struct bfa_fcxp_s *) qe;
+ if (fcxp->caller == NULL) {
+ fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
+ BFA_STATUS_IOC_FAILURE, 0, 0, NULL);
+ bfa_fcxp_free(fcxp);
+ } else {
+ fcxp->rsp_status = BFA_STATUS_IOC_FAILURE;
+ bfa_cb_queue(bfa, &fcxp->hcb_qe,
+ __bfa_fcxp_send_cbfn, fcxp);
+ }
+ }
+}
+
+static struct bfa_fcxp_s *
+bfa_fcxp_get(struct bfa_fcxp_mod_s *fm)
+{
+ struct bfa_fcxp_s *fcxp;
+
+ bfa_q_deq(&fm->fcxp_free_q, &fcxp);
+
+ if (fcxp)
+ list_add_tail(&fcxp->qe, &fm->fcxp_active_q);
+
+ return (fcxp);
+}
+
+static void
+bfa_fcxp_put(struct bfa_fcxp_s *fcxp)
+{
+ struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
+ struct bfa_fcxp_wqe_s *wqe;
+
+ bfa_q_deq(&mod->wait_q, &wqe);
+ if (wqe) {
+ bfa_trc(mod->bfa, fcxp->fcxp_tag);
+ wqe->alloc_cbfn(wqe->alloc_cbarg, fcxp);
+ return;
+ }
+
+ bfa_assert(bfa_q_is_on_q(&mod->fcxp_active_q, fcxp));
+ list_del(&fcxp->qe);
+ list_add_tail(&fcxp->qe, &mod->fcxp_free_q);
+}
+
+static void
+bfa_fcxp_null_comp(void *bfad_fcxp, struct bfa_fcxp_s *fcxp, void *cbarg,
+ bfa_status_t req_status, u32 rsp_len,
+ u32 resid_len, struct fchs_s *rsp_fchs)
+{
+ /**discarded fcxp completion */
+}
+
+static void
+__bfa_fcxp_send_cbfn(void *cbarg, bfa_boolean_t complete)
+{
+ struct bfa_fcxp_s *fcxp = cbarg;
+
+ if (complete) {
+ fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
+ fcxp->rsp_status, fcxp->rsp_len,
+ fcxp->residue_len, &fcxp->rsp_fchs);
+ } else {
+ bfa_fcxp_free(fcxp);
+ }
+}
+
+static void
+hal_fcxp_send_comp(struct bfa_s *bfa, struct bfi_fcxp_send_rsp_s *fcxp_rsp)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+ struct bfa_fcxp_s *fcxp;
+ u16 fcxp_tag = bfa_os_ntohs(fcxp_rsp->fcxp_tag);
+
+ bfa_trc(bfa, fcxp_tag);
+
+ fcxp_rsp->rsp_len = bfa_os_ntohl(fcxp_rsp->rsp_len);
+
+ /**
+ * @todo f/w should not set residue to non-0 when everything
+ * is received.
+ */
+ if (fcxp_rsp->req_status == BFA_STATUS_OK)
+ fcxp_rsp->residue_len = 0;
+ else
+ fcxp_rsp->residue_len = bfa_os_ntohl(fcxp_rsp->residue_len);
+
+ fcxp = BFA_FCXP_FROM_TAG(mod, fcxp_tag);
+
+ bfa_assert(fcxp->send_cbfn != NULL);
+
+ hal_fcxp_rx_plog(mod->bfa, fcxp, fcxp_rsp);
+
+ if (fcxp->send_cbfn != NULL) {
+ if (fcxp->caller == NULL) {
+ bfa_trc(mod->bfa, fcxp->fcxp_tag);
+
+ fcxp->send_cbfn(fcxp->caller, fcxp, fcxp->send_cbarg,
+ fcxp_rsp->req_status, fcxp_rsp->rsp_len,
+ fcxp_rsp->residue_len, &fcxp_rsp->fchs);
+ /*
+ * fcxp automatically freed on return from the callback
+ */
+ bfa_fcxp_free(fcxp);
+ } else {
+ bfa_trc(mod->bfa, fcxp->fcxp_tag);
+ fcxp->rsp_status = fcxp_rsp->req_status;
+ fcxp->rsp_len = fcxp_rsp->rsp_len;
+ fcxp->residue_len = fcxp_rsp->residue_len;
+ fcxp->rsp_fchs = fcxp_rsp->fchs;
+
+ bfa_cb_queue(bfa, &fcxp->hcb_qe,
+ __bfa_fcxp_send_cbfn, fcxp);
+ }
+ } else {
+ bfa_trc(bfa, fcxp_tag);
+ }
+}
+
+static void
+hal_fcxp_set_local_sges(struct bfi_sge_s *sge, u32 reqlen, u64 req_pa)
+{
+ union bfi_addr_u sga_zero = { {0} };
+
+ sge->sg_len = reqlen;
+ sge->flags = BFI_SGE_DATA_LAST;
+ bfa_dma_addr_set(sge[0].sga, req_pa);
+ bfa_sge_to_be(sge);
+ sge++;
+
+ sge->sga = sga_zero;
+ sge->sg_len = reqlen;
+ sge->flags = BFI_SGE_PGDLEN;
+ bfa_sge_to_be(sge);
+}
+
+static void
+hal_fcxp_tx_plog(struct bfa_s *bfa, u32 reqlen, struct bfa_fcxp_s *fcxp,
+ struct fchs_s *fchs)
+{
+ /*
+ * TODO: TX ox_id
+ */
+ if (reqlen > 0) {
+ if (fcxp->use_ireqbuf) {
+ u32 pld_w0 =
+ *((u32 *) BFA_FCXP_REQ_PLD(fcxp));
+
+ bfa_plog_fchdr_and_pl(bfa->plog, BFA_PL_MID_HAL_FCXP,
+ BFA_PL_EID_TX,
+ reqlen + sizeof(struct fchs_s), fchs, pld_w0);
+ } else {
+ bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP,
+ BFA_PL_EID_TX, reqlen + sizeof(struct fchs_s),
+ fchs);
+ }
+ } else {
+ bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP, BFA_PL_EID_TX,
+ reqlen + sizeof(struct fchs_s), fchs);
+ }
+}
+
+static void
+hal_fcxp_rx_plog(struct bfa_s *bfa, struct bfa_fcxp_s *fcxp,
+ struct bfi_fcxp_send_rsp_s *fcxp_rsp)
+{
+ if (fcxp_rsp->rsp_len > 0) {
+ if (fcxp->use_irspbuf) {
+ u32 pld_w0 =
+ *((u32 *) BFA_FCXP_RSP_PLD(fcxp));
+
+ bfa_plog_fchdr_and_pl(bfa->plog, BFA_PL_MID_HAL_FCXP,
+ BFA_PL_EID_RX,
+ (u16) fcxp_rsp->rsp_len,
+ &fcxp_rsp->fchs, pld_w0);
+ } else {
+ bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP,
+ BFA_PL_EID_RX,
+ (u16) fcxp_rsp->rsp_len,
+ &fcxp_rsp->fchs);
+ }
+ } else {
+ bfa_plog_fchdr(bfa->plog, BFA_PL_MID_HAL_FCXP, BFA_PL_EID_RX,
+ (u16) fcxp_rsp->rsp_len, &fcxp_rsp->fchs);
+ }
+}
+
+/**
+ * Handler to resume sending fcxp when space in available in cpe queue.
+ */
+static void
+bfa_fcxp_qresume(void *cbarg)
+{
+ struct bfa_fcxp_s *fcxp = cbarg;
+ struct bfa_s *bfa = fcxp->fcxp_mod->bfa;
+ struct bfi_fcxp_send_req_s *send_req;
+
+ fcxp->reqq_waiting = BFA_FALSE;
+ send_req = bfa_reqq_next(bfa, BFA_REQQ_FCXP);
+ bfa_fcxp_queue(fcxp, send_req);
+}
+
+/**
+ * Queue fcxp send request to foimrware.
+ */
+static void
+bfa_fcxp_queue(struct bfa_fcxp_s *fcxp, struct bfi_fcxp_send_req_s *send_req)
+{
+ struct bfa_s *bfa = fcxp->fcxp_mod->bfa;
+ struct bfa_fcxp_req_info_s *reqi = &fcxp->req_info;
+ struct bfa_fcxp_rsp_info_s *rspi = &fcxp->rsp_info;
+ struct bfa_rport_s *rport = reqi->bfa_rport;
+
+ bfi_h2i_set(send_req->mh, BFI_MC_FCXP, BFI_FCXP_H2I_SEND_REQ,
+ bfa_lpuid(bfa));
+
+ send_req->fcxp_tag = bfa_os_htons(fcxp->fcxp_tag);
+ if (rport) {
+ send_req->rport_fw_hndl = rport->fw_handle;
+ send_req->max_frmsz = bfa_os_htons(rport->rport_info.max_frmsz);
+ if (send_req->max_frmsz == 0)
+ send_req->max_frmsz = bfa_os_htons(FC_MAX_PDUSZ);
+ } else {
+ send_req->rport_fw_hndl = 0;
+ send_req->max_frmsz = bfa_os_htons(FC_MAX_PDUSZ);
+ }
+
+ send_req->vf_id = bfa_os_htons(reqi->vf_id);
+ send_req->lp_tag = reqi->lp_tag;
+ send_req->class = reqi->class;
+ send_req->rsp_timeout = rspi->rsp_timeout;
+ send_req->cts = reqi->cts;
+ send_req->fchs = reqi->fchs;
+
+ send_req->req_len = bfa_os_htonl(reqi->req_tot_len);
+ send_req->rsp_maxlen = bfa_os_htonl(rspi->rsp_maxlen);
+
+ /*
+ * setup req sgles
+ */
+ if (fcxp->use_ireqbuf == 1) {
+ hal_fcxp_set_local_sges(send_req->req_sge, reqi->req_tot_len,
+ BFA_FCXP_REQ_PLD_PA(fcxp));
+ } else {
+ if (fcxp->nreq_sgles > 0) {
+ bfa_assert(fcxp->nreq_sgles == 1);
+ hal_fcxp_set_local_sges(send_req->req_sge,
+ reqi->req_tot_len,
+ fcxp->req_sga_cbfn(fcxp->caller,
+ 0));
+ } else {
+ bfa_assert(reqi->req_tot_len == 0);
+ hal_fcxp_set_local_sges(send_req->rsp_sge, 0, 0);
+ }
+ }
+
+ /*
+ * setup rsp sgles
+ */
+ if (fcxp->use_irspbuf == 1) {
+ bfa_assert(rspi->rsp_maxlen <= BFA_FCXP_MAX_LBUF_SZ);
+
+ hal_fcxp_set_local_sges(send_req->rsp_sge, rspi->rsp_maxlen,
+ BFA_FCXP_RSP_PLD_PA(fcxp));
+
+ } else {
+ if (fcxp->nrsp_sgles > 0) {
+ bfa_assert(fcxp->nrsp_sgles == 1);
+ hal_fcxp_set_local_sges(send_req->rsp_sge,
+ rspi->rsp_maxlen,
+ fcxp->rsp_sga_cbfn(fcxp->caller,
+ 0));
+ } else {
+ bfa_assert(rspi->rsp_maxlen == 0);
+ hal_fcxp_set_local_sges(send_req->rsp_sge, 0, 0);
+ }
+ }
+
+ hal_fcxp_tx_plog(bfa, reqi->req_tot_len, fcxp, &reqi->fchs);
+
+ bfa_reqq_produce(bfa, BFA_REQQ_FCXP);
+
+ bfa_trc(bfa, bfa_reqq_pi(bfa, BFA_REQQ_FCXP));
+ bfa_trc(bfa, bfa_reqq_ci(bfa, BFA_REQQ_FCXP));
+}
+
+
+/**
+ * hal_fcxp_api BFA FCXP API
+ */
+
+/**
+ * Allocate an FCXP instance to send a response or to send a request
+ * that has a response. Request/response buffers are allocated by caller.
+ *
+ * @param[in] bfa BFA bfa instance
+ * @param[in] nreq_sgles Number of SG elements required for request
+ * buffer. 0, if fcxp internal buffers are used.
+ * Use bfa_fcxp_get_reqbuf() to get the
+ * internal req buffer.
+ * @param[in] req_sgles SG elements describing request buffer. Will be
+ * copied in by BFA and hence can be freed on
+ * return from this function.
+ * @param[in] get_req_sga function ptr to be called to get a request SG
+ * Address (given the sge index).
+ * @param[in] get_req_sglen function ptr to be called to get a request SG
+ * len (given the sge index).
+ * @param[in] get_rsp_sga function ptr to be called to get a response SG
+ * Address (given the sge index).
+ * @param[in] get_rsp_sglen function ptr to be called to get a response SG
+ * len (given the sge index).
+ *
+ * @return FCXP instance. NULL on failure.
+ */
+struct bfa_fcxp_s *
+bfa_fcxp_alloc(void *caller, struct bfa_s *bfa, int nreq_sgles,
+ int nrsp_sgles, bfa_fcxp_get_sgaddr_t req_sga_cbfn,
+ bfa_fcxp_get_sglen_t req_sglen_cbfn,
+ bfa_fcxp_get_sgaddr_t rsp_sga_cbfn,
+ bfa_fcxp_get_sglen_t rsp_sglen_cbfn)
+{
+ struct bfa_fcxp_s *fcxp = NULL;
+ u32 nreq_sgpg, nrsp_sgpg;
+
+ bfa_assert(bfa != NULL);
+
+ fcxp = bfa_fcxp_get(BFA_FCXP_MOD(bfa));
+ if (fcxp == NULL)
+ return (NULL);
+
+ bfa_trc(bfa, fcxp->fcxp_tag);
+
+ fcxp->caller = caller;
+
+ if (nreq_sgles == 0) {
+ fcxp->use_ireqbuf = 1;
+ } else {
+ bfa_assert(req_sga_cbfn != NULL);
+ bfa_assert(req_sglen_cbfn != NULL);
+
+ fcxp->use_ireqbuf = 0;
+ fcxp->req_sga_cbfn = req_sga_cbfn;
+ fcxp->req_sglen_cbfn = req_sglen_cbfn;
+
+ fcxp->nreq_sgles = nreq_sgles;
+
+ /*
+ * alloc required sgpgs
+ */
+ if (nreq_sgles > BFI_SGE_INLINE) {
+ nreq_sgpg = BFA_SGPG_NPAGE(nreq_sgles);
+
+ if (bfa_sgpg_malloc
+ (bfa, &fcxp->req_sgpg_q, nreq_sgpg)
+ != BFA_STATUS_OK) {
+ /* bfa_sgpg_wait(bfa, &fcxp->req_sgpg_wqe,
+ nreq_sgpg); */
+ /*
+ * TODO
+ */
+ }
+ }
+ }
+
+ if (nrsp_sgles == 0) {
+ fcxp->use_irspbuf = 1;
+ } else {
+ bfa_assert(rsp_sga_cbfn != NULL);
+ bfa_assert(rsp_sglen_cbfn != NULL);
+
+ fcxp->use_irspbuf = 0;
+ fcxp->rsp_sga_cbfn = rsp_sga_cbfn;
+ fcxp->rsp_sglen_cbfn = rsp_sglen_cbfn;
+
+ fcxp->nrsp_sgles = nrsp_sgles;
+ /*
+ * alloc required sgpgs
+ */
+ if (nrsp_sgles > BFI_SGE_INLINE) {
+ nrsp_sgpg = BFA_SGPG_NPAGE(nreq_sgles);
+
+ if (bfa_sgpg_malloc
+ (bfa, &fcxp->rsp_sgpg_q, nrsp_sgpg)
+ != BFA_STATUS_OK) {
+ /* bfa_sgpg_wait(bfa, &fcxp->rsp_sgpg_wqe,
+ nrsp_sgpg); */
+ /*
+ * TODO
+ */
+ }
+ }
+ }
+
+ return (fcxp);
+}
+
+/**
+ * Get the internal request buffer pointer
+ *
+ * @param[in] fcxp BFA fcxp pointer
+ *
+ * @return pointer to the internal request buffer
+ */
+void *
+bfa_fcxp_get_reqbuf(struct bfa_fcxp_s *fcxp)
+{
+ struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
+ void *reqbuf;
+
+ bfa_assert(fcxp->use_ireqbuf == 1);
+ reqbuf = ((u8 *)mod->req_pld_list_kva) +
+ fcxp->fcxp_tag * mod->req_pld_sz;
+ return reqbuf;
+}
+
+u32
+bfa_fcxp_get_reqbufsz(struct bfa_fcxp_s *fcxp)
+{
+ struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
+
+ return mod->req_pld_sz;
+}
+
+/**
+ * Get the internal response buffer pointer
+ *
+ * @param[in] fcxp BFA fcxp pointer
+ *
+ * @return pointer to the internal request buffer
+ */
+void *
+bfa_fcxp_get_rspbuf(struct bfa_fcxp_s *fcxp)
+{
+ struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
+ void *rspbuf;
+
+ bfa_assert(fcxp->use_irspbuf == 1);
+
+ rspbuf = ((u8 *)mod->rsp_pld_list_kva) +
+ fcxp->fcxp_tag * mod->rsp_pld_sz;
+ return rspbuf;
+}
+
+/**
+ * Free the BFA FCXP
+ *
+ * @param[in] fcxp BFA fcxp pointer
+ *
+ * @return void
+ */
+void
+bfa_fcxp_free(struct bfa_fcxp_s *fcxp)
+{
+ struct bfa_fcxp_mod_s *mod = fcxp->fcxp_mod;
+
+ bfa_assert(fcxp != NULL);
+ bfa_trc(mod->bfa, fcxp->fcxp_tag);
+ bfa_fcxp_put(fcxp);
+}
+
+/**
+ * Send a FCXP request
+ *
+ * @param[in] fcxp BFA fcxp pointer
+ * @param[in] rport BFA rport pointer. Could be left NULL for WKA rports
+ * @param[in] vf_id virtual Fabric ID
+ * @param[in] lp_tag lport tag
+ * @param[in] cts use Continous sequence
+ * @param[in] cos fc Class of Service
+ * @param[in] reqlen request length, does not include FCHS length
+ * @param[in] fchs fc Header Pointer. The header content will be copied
+ * in by BFA.
+ *
+ * @param[in] cbfn call back function to be called on receiving
+ * the response
+ * @param[in] cbarg arg for cbfn
+ * @param[in] rsp_timeout
+ * response timeout
+ *
+ * @return bfa_status_t
+ */
+void
+bfa_fcxp_send(struct bfa_fcxp_s *fcxp, struct bfa_rport_s *rport,
+ u16 vf_id, u8 lp_tag, bfa_boolean_t cts, enum fc_cos cos,
+ u32 reqlen, struct fchs_s *fchs, bfa_cb_fcxp_send_t cbfn,
+ void *cbarg, u32 rsp_maxlen, u8 rsp_timeout)
+{
+ struct bfa_s *bfa = fcxp->fcxp_mod->bfa;
+ struct bfa_fcxp_req_info_s *reqi = &fcxp->req_info;
+ struct bfa_fcxp_rsp_info_s *rspi = &fcxp->rsp_info;
+ struct bfi_fcxp_send_req_s *send_req;
+
+ bfa_trc(bfa, fcxp->fcxp_tag);
+
+ /**
+ * setup request/response info
+ */
+ reqi->bfa_rport = rport;
+ reqi->vf_id = vf_id;
+ reqi->lp_tag = lp_tag;
+ reqi->class = cos;
+ rspi->rsp_timeout = rsp_timeout;
+ reqi->cts = cts;
+ reqi->fchs = *fchs;
+ reqi->req_tot_len = reqlen;
+ rspi->rsp_maxlen = rsp_maxlen;
+ fcxp->send_cbfn = cbfn ? cbfn : bfa_fcxp_null_comp;
+ fcxp->send_cbarg = cbarg;
+
+ /**
+ * If no room in CPE queue, wait for
+ */
+ send_req = bfa_reqq_next(bfa, BFA_REQQ_FCXP);
+ if (!send_req) {
+ bfa_trc(bfa, fcxp->fcxp_tag);
+ fcxp->reqq_waiting = BFA_TRUE;
+ bfa_reqq_wait(bfa, BFA_REQQ_FCXP, &fcxp->reqq_wqe);
+ return;
+ }
+
+ bfa_fcxp_queue(fcxp, send_req);
+}
+
+/**
+ * Abort a BFA FCXP
+ *
+ * @param[in] fcxp BFA fcxp pointer
+ *
+ * @return void
+ */
+bfa_status_t
+bfa_fcxp_abort(struct bfa_fcxp_s *fcxp)
+{
+ bfa_assert(0);
+ return (BFA_STATUS_OK);
+}
+
+void
+bfa_fcxp_alloc_wait(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe,
+ bfa_fcxp_alloc_cbfn_t alloc_cbfn, void *alloc_cbarg)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+
+ bfa_assert(list_empty(&mod->fcxp_free_q));
+
+ wqe->alloc_cbfn = alloc_cbfn;
+ wqe->alloc_cbarg = alloc_cbarg;
+ list_add_tail(&wqe->qe, &mod->wait_q);
+}
+
+void
+bfa_fcxp_walloc_cancel(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+
+ bfa_assert(bfa_q_is_on_q(&mod->wait_q, wqe));
+ list_del(&wqe->qe);
+}
+
+void
+bfa_fcxp_discard(struct bfa_fcxp_s *fcxp)
+{
+ /**
+ * If waiting for room in request queue, cancel reqq wait
+ * and free fcxp.
+ */
+ if (fcxp->reqq_waiting) {
+ fcxp->reqq_waiting = BFA_FALSE;
+ bfa_reqq_wcancel(&fcxp->reqq_wqe);
+ bfa_fcxp_free(fcxp);
+ return;
+ }
+
+ fcxp->send_cbfn = bfa_fcxp_null_comp;
+}
+
+
+
+/**
+ * hal_fcxp_public BFA FCXP public functions
+ */
+
+void
+bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
+{
+ switch (msg->mhdr.msg_id) {
+ case BFI_FCXP_I2H_SEND_RSP:
+ hal_fcxp_send_comp(bfa, (struct bfi_fcxp_send_rsp_s *) msg);
+ break;
+
+ default:
+ bfa_trc(bfa, msg->mhdr.msg_id);
+ bfa_assert(0);
+ }
+}
+
+u32
+bfa_fcxp_get_maxrsp(struct bfa_s *bfa)
+{
+ struct bfa_fcxp_mod_s *mod = BFA_FCXP_MOD(bfa);
+
+ return mod->rsp_pld_sz;
+}
+
+