diff options
Diffstat (limited to 'drivers/scsi/bfa/bfa_port.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_port.c | 460 |
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 000000000000..cab19028361a --- /dev/null +++ b/drivers/scsi/bfa/bfa_port.c @@ -0,0 +1,460 @@ +/* + * 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 <defs/bfa_defs_port.h> +#include <cs/bfa_trc.h> +#include <cs/bfa_log.h> +#include <cs/bfa_debug.h> +#include <port/bfa_port.h> +#include <bfi/bfi.h> +#include <bfi/bfi_port.h> +#include <bfa_ioc.h> +#include <cna/bfa_cna_trcmod.h> + +BFA_TRC_FILE(CNA, PORT); + +#define bfa_ioc_portid(__ioc) ((__ioc)->port_id) +#define bfa_lpuid(__arg) bfa_ioc_portid(&(__arg)->ioc) + +static void +bfa_port_stats_swap(struct bfa_port_s *port, union bfa_pport_stats_u *stats) +{ + u32 *dip = (u32 *) stats; + u32 t0, t1; + int i; + + for (i = 0; i < sizeof(union bfa_pport_stats_u) / sizeof(u32); + i += 2) { + t0 = dip[i]; + t1 = dip[i + 1]; +#ifdef __BIGENDIAN + dip[i] = bfa_os_ntohl(t0); + dip[i + 1] = bfa_os_ntohl(t1); +#else + dip[i] = bfa_os_ntohl(t1); + dip[i + 1] = bfa_os_ntohl(t0); +#endif + } + + /** todo + * QoS stats r also swapped as 64bit; that structure also + * has to use 64 bit counters + */ +} + +/** + * 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_assert(0); +} + +/** + * 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_assert(0); +} + +/** + * 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) { + memcpy(port->stats, port->stats_dma.kva, + sizeof(union bfa_pport_stats_u)); + bfa_port_stats_swap(port, port->stats); + } + + 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) +{ + port->stats_status = status; + port->stats_busy = BFA_FALSE; + + 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: + bfa_assert(0); + } +} + +/** + * bfa_port_meminfo() + * + * + * @param[in] void + * + * @return Size of DMA region + */ +u32 +bfa_port_meminfo(void) +{ + return BFA_ROUNDUP(sizeof(union bfa_pport_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; + + /** todo Not implemented */ + bfa_assert(0); + + 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; + + /** todo Not implemented */ + bfa_assert(0); + + 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_pport_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->dev, 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->dev, 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 - + * logmod - + * + * @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 bfa_log_mod_s *logmod) +{ + bfa_assert(port); + + port->dev = dev; + port->ioc = ioc; + port->trcmod = trcmod; + port->logmod = logmod; + + port->stats_busy = port->endis_pending = BFA_FALSE; + port->stats_cbfn = 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); + bfa_ioc_hbfail_register(port->ioc, &port->hbfail); + + bfa_trc(port, 0); +} + +/** + * bfa_port_detach() + * + * + * @param[in] port - Pointer to the Port module data structure + * + * @return void + */ +void +bfa_port_detach(struct bfa_port_s *port) +{ + bfa_trc(port, 0); +} |