[SCSI] bfa: Added support for CEE info and stats query.

- Added CEE sub-module.
- Added support to collect stats/cee module info
  using BSG interface.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 365 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_port.c b/drivers/scsi/bfa/bfa_port.c
index 8bb6d75f9160..f382a475a09d 100644
--- a/drivers/scsi/bfa/bfa_port.c
+++ b/drivers/scsi/bfa/bfa_port.c
@@ -480,3 +480,368 @@ bfa_port_attach(struct bfa_port_s *port, struct bfa_ioc_s *ioc,
 
 	bfa_trc(port, 0);
 }
+
+/*
+ *	CEE module specific definitions
+ */
+
+/*
+ * bfa_cee_get_attr_isr()
+ *
+ * @brief CEE ISR for get-attributes responses from f/w
+ *
+ * @param[in] cee - Pointer to the CEE module
+ *		    status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_cee_get_attr_isr(struct bfa_cee_s *cee, bfa_status_t status)
+{
+	struct bfa_cee_lldp_cfg_s *lldp_cfg = &cee->attr->lldp_remote;
+
+	cee->get_attr_status = status;
+	bfa_trc(cee, 0);
+	if (status == BFA_STATUS_OK) {
+		bfa_trc(cee, 0);
+		memcpy(cee->attr, cee->attr_dma.kva,
+			sizeof(struct bfa_cee_attr_s));
+		lldp_cfg->time_to_live = be16_to_cpu(lldp_cfg->time_to_live);
+		lldp_cfg->enabled_system_cap =
+				be16_to_cpu(lldp_cfg->enabled_system_cap);
+	}
+	cee->get_attr_pending = BFA_FALSE;
+	if (cee->cbfn.get_attr_cbfn) {
+		bfa_trc(cee, 0);
+		cee->cbfn.get_attr_cbfn(cee->cbfn.get_attr_cbarg, status);
+	}
+}
+
+/*
+ * bfa_cee_get_stats_isr()
+ *
+ * @brief CEE ISR for get-stats responses from f/w
+ *
+ * @param[in] cee - Pointer to the CEE module
+ *	      status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_cee_get_stats_isr(struct bfa_cee_s *cee, bfa_status_t status)
+{
+	u32 *buffer;
+	int i;
+
+	cee->get_stats_status = status;
+	bfa_trc(cee, 0);
+	if (status == BFA_STATUS_OK) {
+		bfa_trc(cee, 0);
+		memcpy(cee->stats, cee->stats_dma.kva,
+			sizeof(struct bfa_cee_stats_s));
+		/* swap the cee stats */
+		buffer = (u32 *)cee->stats;
+		for (i = 0; i < (sizeof(struct bfa_cee_stats_s) /
+				 sizeof(u32)); i++)
+			buffer[i] = cpu_to_be32(buffer[i]);
+	}
+	cee->get_stats_pending = BFA_FALSE;
+	bfa_trc(cee, 0);
+	if (cee->cbfn.get_stats_cbfn) {
+		bfa_trc(cee, 0);
+		cee->cbfn.get_stats_cbfn(cee->cbfn.get_stats_cbarg, status);
+	}
+}
+
+/*
+ * bfa_cee_reset_stats_isr()
+ *
+ * @brief CEE ISR for reset-stats responses from f/w
+ *
+ * @param[in] cee - Pointer to the CEE module
+ *            status - Return status from the f/w
+ *
+ * @return void
+ */
+static void
+bfa_cee_reset_stats_isr(struct bfa_cee_s *cee, bfa_status_t status)
+{
+	cee->reset_stats_status = status;
+	cee->reset_stats_pending = BFA_FALSE;
+	if (cee->cbfn.reset_stats_cbfn)
+		cee->cbfn.reset_stats_cbfn(cee->cbfn.reset_stats_cbarg, status);
+}
+
+/*
+ * bfa_cee_meminfo()
+ *
+ * @brief Returns the size of the DMA memory needed by CEE module
+ *
+ * @param[in] void
+ *
+ * @return Size of DMA region
+ */
+u32
+bfa_cee_meminfo(void)
+{
+	return BFA_ROUNDUP(sizeof(struct bfa_cee_attr_s), BFA_DMA_ALIGN_SZ) +
+		BFA_ROUNDUP(sizeof(struct bfa_cee_stats_s), BFA_DMA_ALIGN_SZ);
+}
+
+/*
+ * bfa_cee_mem_claim()
+ *
+ * @brief Initialized CEE DMA Memory
+ *
+ * @param[in] cee CEE module pointer
+ *            dma_kva Kernel Virtual Address of CEE DMA Memory
+ *            dma_pa  Physical Address of CEE DMA Memory
+ *
+ * @return void
+ */
+void
+bfa_cee_mem_claim(struct bfa_cee_s *cee, u8 *dma_kva, u64 dma_pa)
+{
+	cee->attr_dma.kva = dma_kva;
+	cee->attr_dma.pa = dma_pa;
+	cee->stats_dma.kva = dma_kva + BFA_ROUNDUP(
+			     sizeof(struct bfa_cee_attr_s), BFA_DMA_ALIGN_SZ);
+	cee->stats_dma.pa = dma_pa + BFA_ROUNDUP(
+			     sizeof(struct bfa_cee_attr_s), BFA_DMA_ALIGN_SZ);
+	cee->attr = (struct bfa_cee_attr_s *) dma_kva;
+	cee->stats = (struct bfa_cee_stats_s *) (dma_kva + BFA_ROUNDUP(
+			sizeof(struct bfa_cee_attr_s), BFA_DMA_ALIGN_SZ));
+}
+
+/*
+ * bfa_cee_get_attr()
+ *
+ * @brief
+ *   Send the request to the f/w to fetch CEE attributes.
+ *
+ * @param[in] Pointer to the CEE module data structure.
+ *
+ * @return Status
+ */
+
+bfa_status_t
+bfa_cee_get_attr(struct bfa_cee_s *cee, struct bfa_cee_attr_s *attr,
+		 bfa_cee_get_attr_cbfn_t cbfn, void *cbarg)
+{
+	struct bfi_cee_get_req_s *cmd;
+
+	WARN_ON((cee == NULL) || (cee->ioc == NULL));
+	bfa_trc(cee, 0);
+	if (!bfa_ioc_is_operational(cee->ioc)) {
+		bfa_trc(cee, 0);
+		return BFA_STATUS_IOC_FAILURE;
+	}
+	if (cee->get_attr_pending == BFA_TRUE) {
+		bfa_trc(cee, 0);
+		return  BFA_STATUS_DEVBUSY;
+	}
+	cee->get_attr_pending = BFA_TRUE;
+	cmd = (struct bfi_cee_get_req_s *) cee->get_cfg_mb.msg;
+	cee->attr = attr;
+	cee->cbfn.get_attr_cbfn = cbfn;
+	cee->cbfn.get_attr_cbarg = cbarg;
+	bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_GET_CFG_REQ,
+		bfa_ioc_portid(cee->ioc));
+	bfa_dma_be_addr_set(cmd->dma_addr, cee->attr_dma.pa);
+	bfa_ioc_mbox_queue(cee->ioc, &cee->get_cfg_mb);
+
+	return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_cee_get_stats()
+ *
+ * @brief
+ *   Send the request to the f/w to fetch CEE statistics.
+ *
+ * @param[in] Pointer to the CEE module data structure.
+ *
+ * @return Status
+ */
+
+bfa_status_t
+bfa_cee_get_stats(struct bfa_cee_s *cee, struct bfa_cee_stats_s *stats,
+		  bfa_cee_get_stats_cbfn_t cbfn, void *cbarg)
+{
+	struct bfi_cee_get_req_s *cmd;
+
+	WARN_ON((cee == NULL) || (cee->ioc == NULL));
+
+	if (!bfa_ioc_is_operational(cee->ioc)) {
+		bfa_trc(cee, 0);
+		return BFA_STATUS_IOC_FAILURE;
+	}
+	if (cee->get_stats_pending == BFA_TRUE) {
+		bfa_trc(cee, 0);
+		return  BFA_STATUS_DEVBUSY;
+	}
+	cee->get_stats_pending = BFA_TRUE;
+	cmd = (struct bfi_cee_get_req_s *) cee->get_stats_mb.msg;
+	cee->stats = stats;
+	cee->cbfn.get_stats_cbfn = cbfn;
+	cee->cbfn.get_stats_cbarg = cbarg;
+	bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_GET_STATS_REQ,
+		bfa_ioc_portid(cee->ioc));
+	bfa_dma_be_addr_set(cmd->dma_addr, cee->stats_dma.pa);
+	bfa_ioc_mbox_queue(cee->ioc, &cee->get_stats_mb);
+
+	return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_cee_reset_stats()
+ *
+ * @brief Clears CEE Stats in the f/w.
+ *
+ * @param[in] Pointer to the CEE module data structure.
+ *
+ * @return Status
+ */
+
+bfa_status_t
+bfa_cee_reset_stats(struct bfa_cee_s *cee,
+		    bfa_cee_reset_stats_cbfn_t cbfn, void *cbarg)
+{
+	struct bfi_cee_reset_stats_s *cmd;
+
+	WARN_ON((cee == NULL) || (cee->ioc == NULL));
+	if (!bfa_ioc_is_operational(cee->ioc)) {
+		bfa_trc(cee, 0);
+		return BFA_STATUS_IOC_FAILURE;
+	}
+	if (cee->reset_stats_pending == BFA_TRUE) {
+		bfa_trc(cee, 0);
+		return  BFA_STATUS_DEVBUSY;
+	}
+	cee->reset_stats_pending = BFA_TRUE;
+	cmd = (struct bfi_cee_reset_stats_s *) cee->reset_stats_mb.msg;
+	cee->cbfn.reset_stats_cbfn = cbfn;
+	cee->cbfn.reset_stats_cbarg = cbarg;
+	bfi_h2i_set(cmd->mh, BFI_MC_CEE, BFI_CEE_H2I_RESET_STATS,
+		bfa_ioc_portid(cee->ioc));
+	bfa_ioc_mbox_queue(cee->ioc, &cee->reset_stats_mb);
+
+	return BFA_STATUS_OK;
+}
+
+/*
+ * bfa_cee_isrs()
+ *
+ * @brief Handles Mail-box interrupts for CEE module.
+ *
+ * @param[in] Pointer to the CEE module data structure.
+ *
+ * @return void
+ */
+
+void
+bfa_cee_isr(void *cbarg, struct bfi_mbmsg_s *m)
+{
+	union bfi_cee_i2h_msg_u *msg;
+	struct bfi_cee_get_rsp_s *get_rsp;
+	struct bfa_cee_s *cee = (struct bfa_cee_s *) cbarg;
+	msg = (union bfi_cee_i2h_msg_u *) m;
+	get_rsp = (struct bfi_cee_get_rsp_s *) m;
+	bfa_trc(cee, msg->mh.msg_id);
+	switch (msg->mh.msg_id) {
+	case BFI_CEE_I2H_GET_CFG_RSP:
+		bfa_trc(cee, get_rsp->cmd_status);
+		bfa_cee_get_attr_isr(cee, get_rsp->cmd_status);
+		break;
+	case BFI_CEE_I2H_GET_STATS_RSP:
+		bfa_cee_get_stats_isr(cee, get_rsp->cmd_status);
+		break;
+	case BFI_CEE_I2H_RESET_STATS_RSP:
+		bfa_cee_reset_stats_isr(cee, get_rsp->cmd_status);
+		break;
+	default:
+		WARN_ON(1);
+	}
+}
+
+/*
+ * bfa_cee_notify()
+ *
+ * @brief CEE module IOC event handler.
+ *
+ * @param[in] Pointer to the CEE module data structure.
+ * @param[in] IOC event type
+ *
+ * @return void
+ */
+
+void
+bfa_cee_notify(void *arg, enum bfa_ioc_event_e event)
+{
+	struct bfa_cee_s *cee = (struct bfa_cee_s *) arg;
+
+	bfa_trc(cee, event);
+
+	switch (event) {
+	case BFA_IOC_E_DISABLED:
+	case BFA_IOC_E_FAILED:
+		if (cee->get_attr_pending == BFA_TRUE) {
+			cee->get_attr_status = BFA_STATUS_FAILED;
+			cee->get_attr_pending  = BFA_FALSE;
+			if (cee->cbfn.get_attr_cbfn) {
+				cee->cbfn.get_attr_cbfn(
+					cee->cbfn.get_attr_cbarg,
+					BFA_STATUS_FAILED);
+			}
+		}
+		if (cee->get_stats_pending == BFA_TRUE) {
+			cee->get_stats_status = BFA_STATUS_FAILED;
+			cee->get_stats_pending  = BFA_FALSE;
+			if (cee->cbfn.get_stats_cbfn) {
+				cee->cbfn.get_stats_cbfn(
+				cee->cbfn.get_stats_cbarg,
+				BFA_STATUS_FAILED);
+			}
+		}
+		if (cee->reset_stats_pending == BFA_TRUE) {
+			cee->reset_stats_status = BFA_STATUS_FAILED;
+			cee->reset_stats_pending  = BFA_FALSE;
+			if (cee->cbfn.reset_stats_cbfn) {
+				cee->cbfn.reset_stats_cbfn(
+				cee->cbfn.reset_stats_cbarg,
+				BFA_STATUS_FAILED);
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+}
+
+/*
+ * bfa_cee_attach()
+ *
+ * @brief CEE module-attach API
+ *
+ * @param[in] cee - Pointer to the CEE 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.
+ *
+ * @return void
+ */
+void
+bfa_cee_attach(struct bfa_cee_s *cee, struct bfa_ioc_s *ioc,
+		void *dev)
+{
+	WARN_ON(cee == NULL);
+	cee->dev = dev;
+	cee->ioc = ioc;
+
+	bfa_ioc_mbox_regisr(cee->ioc, BFI_MC_CEE, bfa_cee_isr, cee);
+	bfa_q_qe_init(&cee->ioc_notify);
+	bfa_ioc_notify_init(&cee->ioc_notify, bfa_cee_notify, cee);
+	list_add_tail(&cee->ioc_notify.qe, &cee->ioc->notify_q);
+}