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path: root/drivers/scsi/bfa/bfa_port.c
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-rw-r--r--drivers/scsi/bfa/bfa_port.c460
1 files changed, 460 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_port.c b/drivers/scsi/bfa/bfa_port.c
new file mode 100644
index 00000000..3f8e9d60
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_port.c
@@ -0,0 +1,460 @@
+/*
+ * Copyright (c) 2005-2010 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 "bfad_drv.h"
+#include "bfa_defs_svc.h"
+#include "bfa_port.h"
+#include "bfi.h"
+#include "bfa_ioc.h"
+
+
+BFA_TRC_FILE(CNA, PORT);
+
+#define bfa_ioc_portid(__ioc) ((__ioc)->port_id)
+
+static void
+bfa_port_stats_swap(struct bfa_port_s *port, union bfa_port_stats_u *stats)
+{
+ u32 *dip = (u32 *) stats;
+ __be32 t0, t1;
+ int i;
+
+ for (i = 0; i < sizeof(union bfa_port_stats_u)/sizeof(u32);
+ i += 2) {
+ t0 = dip[i];
+ t1 = dip[i + 1];
+#ifdef __BIG_ENDIAN
+ dip[i] = be32_to_cpu(t0);
+ dip[i + 1] = be32_to_cpu(t1);
+#else
+ dip[i] = be32_to_cpu(t1);
+ dip[i + 1] = be32_to_cpu(t0);
+#endif
+ }
+}
+
+/*
+ * bfa_port_enable_isr()
+ *
+ *
+ * @param[in] port - Pointer to the port module
+ * status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_port_enable_isr(struct bfa_port_s *port, bfa_status_t status)
+{
+ bfa_trc(port, status);
+ port->endis_pending = BFA_FALSE;
+ port->endis_cbfn(port->endis_cbarg, status);
+}
+
+/*
+ * bfa_port_disable_isr()
+ *
+ *
+ * @param[in] port - Pointer to the port module
+ * status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_port_disable_isr(struct bfa_port_s *port, bfa_status_t status)
+{
+ bfa_trc(port, status);
+ port->endis_pending = BFA_FALSE;
+ port->endis_cbfn(port->endis_cbarg, status);
+}
+
+/*
+ * bfa_port_get_stats_isr()
+ *
+ *
+ * @param[in] port - Pointer to the Port module
+ * status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_port_get_stats_isr(struct bfa_port_s *port, bfa_status_t status)
+{
+ port->stats_status = status;
+ port->stats_busy = BFA_FALSE;
+
+ if (status == BFA_STATUS_OK) {
+ struct timeval tv;
+
+ memcpy(port->stats, port->stats_dma.kva,
+ sizeof(union bfa_port_stats_u));
+ bfa_port_stats_swap(port, port->stats);
+
+ do_gettimeofday(&tv);
+ port->stats->fc.secs_reset = tv.tv_sec - port->stats_reset_time;
+ }
+
+ if (port->stats_cbfn) {
+ port->stats_cbfn(port->stats_cbarg, status);
+ port->stats_cbfn = NULL;
+ }
+}
+
+/*
+ * bfa_port_clear_stats_isr()
+ *
+ *
+ * @param[in] port - Pointer to the Port module
+ * status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_port_clear_stats_isr(struct bfa_port_s *port, bfa_status_t status)
+{
+ struct timeval tv;
+
+ port->stats_status = status;
+ port->stats_busy = BFA_FALSE;
+
+ /*
+ * re-initialize time stamp for stats reset
+ */
+ do_gettimeofday(&tv);
+ port->stats_reset_time = tv.tv_sec;
+
+ if (port->stats_cbfn) {
+ port->stats_cbfn(port->stats_cbarg, status);
+ port->stats_cbfn = NULL;
+ }
+}
+
+/*
+ * bfa_port_isr()
+ *
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return void
+ */
+static void
+bfa_port_isr(void *cbarg, struct bfi_mbmsg_s *m)
+{
+ struct bfa_port_s *port = (struct bfa_port_s *) cbarg;
+ union bfi_port_i2h_msg_u *i2hmsg;
+
+ i2hmsg = (union bfi_port_i2h_msg_u *) m;
+ bfa_trc(port, m->mh.msg_id);
+
+ switch (m->mh.msg_id) {
+ case BFI_PORT_I2H_ENABLE_RSP:
+ if (port->endis_pending == BFA_FALSE)
+ break;
+ bfa_port_enable_isr(port, i2hmsg->enable_rsp.status);
+ break;
+
+ case BFI_PORT_I2H_DISABLE_RSP:
+ if (port->endis_pending == BFA_FALSE)
+ break;
+ bfa_port_disable_isr(port, i2hmsg->disable_rsp.status);
+ break;
+
+ case BFI_PORT_I2H_GET_STATS_RSP:
+ /* Stats busy flag is still set? (may be cmd timed out) */
+ if (port->stats_busy == BFA_FALSE)
+ break;
+ bfa_port_get_stats_isr(port, i2hmsg->getstats_rsp.status);
+ break;
+
+ case BFI_PORT_I2H_CLEAR_STATS_RSP:
+ if (port->stats_busy == BFA_FALSE)
+ break;
+ bfa_port_clear_stats_isr(port, i2hmsg->clearstats_rsp.status);
+ break;
+
+ default:
+ WARN_ON(1);
+ }
+}
+
+/*
+ * bfa_port_meminfo()
+ *
+ *
+ * @param[in] void
+ *
+ * @return Size of DMA region
+ */
+u32
+bfa_port_meminfo(void)
+{
+ return BFA_ROUNDUP(sizeof(union bfa_port_stats_u), BFA_DMA_ALIGN_SZ);
+}
+
+/*
+ * bfa_port_mem_claim()
+ *
+ *
+ * @param[in] port Port module pointer
+ * dma_kva Kernel Virtual Address of Port DMA Memory
+ * dma_pa Physical Address of Port DMA Memory
+ *
+ * @return void
+ */
+void
+bfa_port_mem_claim(struct bfa_port_s *port, u8 *dma_kva, u64 dma_pa)
+{
+ port->stats_dma.kva = dma_kva;
+ port->stats_dma.pa = dma_pa;
+}
+
+/*
+ * bfa_port_enable()
+ *
+ * Send the Port enable request to the f/w
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return Status
+ */
+bfa_status_t
+bfa_port_enable(struct bfa_port_s *port, bfa_port_endis_cbfn_t cbfn,
+ void *cbarg)
+{
+ struct bfi_port_generic_req_s *m;
+
+ if (bfa_ioc_is_disabled(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_DISABLED);
+ return BFA_STATUS_IOC_DISABLED;
+ }
+
+ if (!bfa_ioc_is_operational(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_FAILURE);
+ return BFA_STATUS_IOC_FAILURE;
+ }
+
+ if (port->endis_pending) {
+ bfa_trc(port, BFA_STATUS_DEVBUSY);
+ return BFA_STATUS_DEVBUSY;
+ }
+
+ m = (struct bfi_port_generic_req_s *) port->endis_mb.msg;
+
+ port->msgtag++;
+ port->endis_cbfn = cbfn;
+ port->endis_cbarg = cbarg;
+ port->endis_pending = BFA_TRUE;
+
+ bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_ENABLE_REQ,
+ bfa_ioc_portid(port->ioc));
+ bfa_ioc_mbox_queue(port->ioc, &port->endis_mb);
+
+ return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_port_disable()
+ *
+ * Send the Port disable request to the f/w
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return Status
+ */
+bfa_status_t
+bfa_port_disable(struct bfa_port_s *port, bfa_port_endis_cbfn_t cbfn,
+ void *cbarg)
+{
+ struct bfi_port_generic_req_s *m;
+
+ if (bfa_ioc_is_disabled(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_DISABLED);
+ return BFA_STATUS_IOC_DISABLED;
+ }
+
+ if (!bfa_ioc_is_operational(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_FAILURE);
+ return BFA_STATUS_IOC_FAILURE;
+ }
+
+ if (port->endis_pending) {
+ bfa_trc(port, BFA_STATUS_DEVBUSY);
+ return BFA_STATUS_DEVBUSY;
+ }
+
+ m = (struct bfi_port_generic_req_s *) port->endis_mb.msg;
+
+ port->msgtag++;
+ port->endis_cbfn = cbfn;
+ port->endis_cbarg = cbarg;
+ port->endis_pending = BFA_TRUE;
+
+ bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_DISABLE_REQ,
+ bfa_ioc_portid(port->ioc));
+ bfa_ioc_mbox_queue(port->ioc, &port->endis_mb);
+
+ return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_port_get_stats()
+ *
+ * Send the request to the f/w to fetch Port statistics.
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return Status
+ */
+bfa_status_t
+bfa_port_get_stats(struct bfa_port_s *port, union bfa_port_stats_u *stats,
+ bfa_port_stats_cbfn_t cbfn, void *cbarg)
+{
+ struct bfi_port_get_stats_req_s *m;
+
+ if (!bfa_ioc_is_operational(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_FAILURE);
+ return BFA_STATUS_IOC_FAILURE;
+ }
+
+ if (port->stats_busy) {
+ bfa_trc(port, BFA_STATUS_DEVBUSY);
+ return BFA_STATUS_DEVBUSY;
+ }
+
+ m = (struct bfi_port_get_stats_req_s *) port->stats_mb.msg;
+
+ port->stats = stats;
+ port->stats_cbfn = cbfn;
+ port->stats_cbarg = cbarg;
+ port->stats_busy = BFA_TRUE;
+ bfa_dma_be_addr_set(m->dma_addr, port->stats_dma.pa);
+
+ bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_GET_STATS_REQ,
+ bfa_ioc_portid(port->ioc));
+ bfa_ioc_mbox_queue(port->ioc, &port->stats_mb);
+
+ return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_port_clear_stats()
+ *
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return Status
+ */
+bfa_status_t
+bfa_port_clear_stats(struct bfa_port_s *port, bfa_port_stats_cbfn_t cbfn,
+ void *cbarg)
+{
+ struct bfi_port_generic_req_s *m;
+
+ if (!bfa_ioc_is_operational(port->ioc)) {
+ bfa_trc(port, BFA_STATUS_IOC_FAILURE);
+ return BFA_STATUS_IOC_FAILURE;
+ }
+
+ if (port->stats_busy) {
+ bfa_trc(port, BFA_STATUS_DEVBUSY);
+ return BFA_STATUS_DEVBUSY;
+ }
+
+ m = (struct bfi_port_generic_req_s *) port->stats_mb.msg;
+
+ port->stats_cbfn = cbfn;
+ port->stats_cbarg = cbarg;
+ port->stats_busy = BFA_TRUE;
+
+ bfi_h2i_set(m->mh, BFI_MC_PORT, BFI_PORT_H2I_CLEAR_STATS_REQ,
+ bfa_ioc_portid(port->ioc));
+ bfa_ioc_mbox_queue(port->ioc, &port->stats_mb);
+
+ return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_port_hbfail()
+ *
+ *
+ * @param[in] Pointer to the Port module data structure.
+ *
+ * @return void
+ */
+void
+bfa_port_hbfail(void *arg)
+{
+ struct bfa_port_s *port = (struct bfa_port_s *) arg;
+
+ /* Fail any pending get_stats/clear_stats requests */
+ if (port->stats_busy) {
+ if (port->stats_cbfn)
+ port->stats_cbfn(port->stats_cbarg, BFA_STATUS_FAILED);
+ port->stats_cbfn = NULL;
+ port->stats_busy = BFA_FALSE;
+ }
+
+ /* Clear any enable/disable is pending */
+ if (port->endis_pending) {
+ if (port->endis_cbfn)
+ port->endis_cbfn(port->endis_cbarg, BFA_STATUS_FAILED);
+ port->endis_cbfn = NULL;
+ port->endis_pending = BFA_FALSE;
+ }
+}
+
+/*
+ * bfa_port_attach()
+ *
+ *
+ * @param[in] port - Pointer to the Port module data structure
+ * ioc - Pointer to the ioc module data structure
+ * dev - Pointer to the device driver module data structure
+ * The device driver specific mbox ISR functions have
+ * this pointer as one of the parameters.
+ * trcmod -
+ *
+ * @return void
+ */
+void
+bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
+ void *dev, struct bfa_trc_mod_s *trcmod)
+{
+ struct timeval tv;
+
+ WARN_ON(!port);
+
+ port->dev = dev;
+ port->ioc = ioc;
+ port->trcmod = trcmod;
+
+ port->stats_busy = BFA_FALSE;
+ port->endis_pending = BFA_FALSE;
+ port->stats_cbfn = NULL;
+ port->endis_cbfn = NULL;
+
+ bfa_ioc_mbox_regisr(port->ioc, BFI_MC_PORT, bfa_port_isr, port);
+ bfa_ioc_hbfail_init(&port->hbfail, bfa_port_hbfail, port);
+ list_add_tail(&port->hbfail.qe, &port->ioc->hb_notify_q);
+
+ /*
+ * initialize time stamp for stats reset
+ */
+ do_gettimeofday(&tv);
+ port->stats_reset_time = tv.tv_sec;
+
+ bfa_trc(port, 0);
+}
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