+++ /dev/null
-/*
- * QLogic Fibre Channel HBA Driver
- * Copyright (c) 2003-2005 QLogic Corporation
- *
- * See LICENSE.qla2xxx for copyright and licensing details.
- */
-#include "qla_def.h"
-
-/**
- * IO descriptor handle definitions.
- *
- * Signature form:
- *
- * |31------28|27-------------------12|11-------0|
- * | Type | Rolling Signature | Index |
- * |----------|-----------------------|----------|
- *
- **/
-
-#define HDL_TYPE_SCSI 0
-#define HDL_TYPE_ASYNC_IOCB 0x0A
-
-#define HDL_INDEX_BITS 12
-#define HDL_ITER_BITS 16
-#define HDL_TYPE_BITS 4
-
-#define HDL_INDEX_MASK ((1UL << HDL_INDEX_BITS) - 1)
-#define HDL_ITER_MASK ((1UL << HDL_ITER_BITS) - 1)
-#define HDL_TYPE_MASK ((1UL << HDL_TYPE_BITS) - 1)
-
-#define HDL_INDEX_SHIFT 0
-#define HDL_ITER_SHIFT (HDL_INDEX_SHIFT + HDL_INDEX_BITS)
-#define HDL_TYPE_SHIFT (HDL_ITER_SHIFT + HDL_ITER_BITS)
-
-/* Local Prototypes. */
-static inline uint32_t qla2x00_to_handle(uint16_t, uint16_t, uint16_t);
-static inline uint16_t qla2x00_handle_to_idx(uint32_t);
-static inline uint32_t qla2x00_iodesc_to_handle(struct io_descriptor *);
-static inline struct io_descriptor *qla2x00_handle_to_iodesc(scsi_qla_host_t *,
- uint32_t);
-
-static inline struct io_descriptor *qla2x00_alloc_iodesc(scsi_qla_host_t *);
-static inline void qla2x00_free_iodesc(struct io_descriptor *);
-static inline void qla2x00_init_io_descriptors(scsi_qla_host_t *);
-
-static void qla2x00_iodesc_timeout(unsigned long);
-static inline void qla2x00_add_iodesc_timer(struct io_descriptor *);
-static inline void qla2x00_remove_iodesc_timer(struct io_descriptor *);
-
-static inline void qla2x00_update_login_fcport(scsi_qla_host_t *,
- struct mbx_entry *, fc_port_t *);
-
-static int qla2x00_send_abort_iocb(scsi_qla_host_t *, struct io_descriptor *,
- uint32_t, int);
-static int qla2x00_send_abort_iocb_cb(scsi_qla_host_t *, struct io_descriptor *,
- struct mbx_entry *);
-
-static int qla2x00_send_adisc_iocb(scsi_qla_host_t *, struct io_descriptor *,
- int);
-static int qla2x00_send_adisc_iocb_cb(scsi_qla_host_t *, struct io_descriptor *,
- struct mbx_entry *);
-
-static int qla2x00_send_logout_iocb(scsi_qla_host_t *, struct io_descriptor *,
- int);
-static int qla2x00_send_logout_iocb_cb(scsi_qla_host_t *,
- struct io_descriptor *, struct mbx_entry *);
-
-static int qla2x00_send_login_iocb(scsi_qla_host_t *, struct io_descriptor *,
- port_id_t *, int);
-static int qla2x00_send_login_iocb_cb(scsi_qla_host_t *, struct io_descriptor *,
- struct mbx_entry *);
-
-/**
- * Mailbox IOCB callback array.
- **/
-static int (*iocb_function_cb_list[LAST_IOCB_CB])
- (scsi_qla_host_t *, struct io_descriptor *, struct mbx_entry *) = {
-
- qla2x00_send_abort_iocb_cb,
- qla2x00_send_adisc_iocb_cb,
- qla2x00_send_logout_iocb_cb,
- qla2x00_send_login_iocb_cb,
-};
-
-
-/**
- * Generic IO descriptor handle routines.
- **/
-
-/**
- * qla2x00_to_handle() - Create a descriptor handle.
- * @type: descriptor type
- * @iter: descriptor rolling signature
- * @idx: index to the descriptor array
- *
- * Returns a composite handle based in the @type, @iter, and @idx.
- */
-static inline uint32_t
-qla2x00_to_handle(uint16_t type, uint16_t iter, uint16_t idx)
-{
- return ((uint32_t)(((uint32_t)type << HDL_TYPE_SHIFT) |
- ((uint32_t)iter << HDL_ITER_SHIFT) |
- ((uint32_t)idx << HDL_INDEX_SHIFT)));
-}
-
-/**
- * qla2x00_handle_to_idx() - Retrive the index for a given handle.
- * @handle: descriptor handle
- *
- * Returns the index specified by the @handle.
- */
-static inline uint16_t
-qla2x00_handle_to_idx(uint32_t handle)
-{
- return ((uint16_t)(((handle) >> HDL_INDEX_SHIFT) & HDL_INDEX_MASK));
-}
-
-/**
- * qla2x00_iodesc_to_handle() - Convert an IO descriptor to a unique handle.
- * @iodesc: io descriptor
- *
- * Returns a unique handle for @iodesc.
- */
-static inline uint32_t
-qla2x00_iodesc_to_handle(struct io_descriptor *iodesc)
-{
- uint32_t handle;
-
- handle = qla2x00_to_handle(HDL_TYPE_ASYNC_IOCB,
- ++iodesc->ha->iodesc_signature, iodesc->idx);
- iodesc->signature = handle;
-
- return (handle);
-}
-
-/**
- * qla2x00_handle_to_iodesc() - Retrieve an IO descriptor given a unique handle.
- * @ha: HA context
- * @handle: handle to io descriptor
- *
- * Returns a pointer to the io descriptor, or NULL, if the io descriptor does
- * not exist or the io descriptors signature does not @handle.
- */
-static inline struct io_descriptor *
-qla2x00_handle_to_iodesc(scsi_qla_host_t *ha, uint32_t handle)
-{
- uint16_t idx;
- struct io_descriptor *iodesc;
-
- idx = qla2x00_handle_to_idx(handle);
- iodesc = &ha->io_descriptors[idx];
- if (iodesc)
- if (iodesc->signature != handle)
- iodesc = NULL;
-
- return (iodesc);
-}
-
-
-/**
- * IO descriptor allocation routines.
- **/
-
-/**
- * qla2x00_alloc_iodesc() - Allocate an IO descriptor from the pool.
- * @ha: HA context
- *
- * Returns a pointer to the allocated io descriptor, or NULL, if none available.
- */
-static inline struct io_descriptor *
-qla2x00_alloc_iodesc(scsi_qla_host_t *ha)
-{
- uint16_t iter;
- struct io_descriptor *iodesc;
-
- iodesc = NULL;
- for (iter = 0; iter < MAX_IO_DESCRIPTORS; iter++) {
- if (ha->io_descriptors[iter].used)
- continue;
-
- iodesc = &ha->io_descriptors[iter];
- iodesc->used = 1;
- iodesc->idx = iter;
- init_timer(&iodesc->timer);
- iodesc->ha = ha;
- iodesc->signature = qla2x00_iodesc_to_handle(iodesc);
- break;
- }
-
- return (iodesc);
-}
-
-/**
- * qla2x00_free_iodesc() - Free an IO descriptor.
- * @iodesc: io descriptor
- *
- * NOTE: The io descriptors timer *must* be stopped before it can be free'd.
- */
-static inline void
-qla2x00_free_iodesc(struct io_descriptor *iodesc)
-{
- iodesc->used = 0;
- iodesc->signature = 0;
-}
-
-/**
- * qla2x00_remove_iodesc_timer() - Remove an active timer from an IO descriptor.
- * @iodesc: io descriptor
- */
-static inline void
-qla2x00_remove_iodesc_timer(struct io_descriptor *iodesc)
-{
- if (iodesc->timer.function != NULL) {
- del_timer_sync(&iodesc->timer);
- iodesc->timer.data = (unsigned long) NULL;
- iodesc->timer.function = NULL;
- }
-}
-
-/**
- * qla2x00_init_io_descriptors() - Initialize the pool of IO descriptors.
- * @ha: HA context
- */
-static inline void
-qla2x00_init_io_descriptors(scsi_qla_host_t *ha)
-{
- uint16_t iter;
-
- for (iter = 0; iter < MAX_IO_DESCRIPTORS; iter++) {
- if (!ha->io_descriptors[iter].used)
- continue;
-
- qla2x00_remove_iodesc_timer(&ha->io_descriptors[iter]);
- qla2x00_free_iodesc(&ha->io_descriptors[iter]);
- }
-}
-
-
-/**
- * IO descriptor timer routines.
- **/
-
-/**
- * qla2x00_iodesc_timeout() - Timeout IO descriptor handler.
- * @data: io descriptor
- */
-static void
-qla2x00_iodesc_timeout(unsigned long data)
-{
- struct io_descriptor *iodesc;
-
- iodesc = (struct io_descriptor *) data;
-
- DEBUG14(printk("scsi(%ld): IO descriptor timeout, index=%x "
- "signature=%08x, scheduling ISP abort.\n", iodesc->ha->host_no,
- iodesc->idx, iodesc->signature));
-
- qla2x00_free_iodesc(iodesc);
-
- qla_printk(KERN_WARNING, iodesc->ha,
- "IO descriptor timeout. Scheduling ISP abort.\n");
- set_bit(ISP_ABORT_NEEDED, &iodesc->ha->dpc_flags);
-}
-
-/**
- * qla2x00_add_iodesc_timer() - Add and start a timer for an IO descriptor.
- * @iodesc: io descriptor
- *
- * NOTE:
- * The firmware shall timeout an outstanding mailbox IOCB in 2 * R_A_TOV (in
- * tenths of a second) after it hits the wire. But, if there are any request
- * resource contraints (i.e. during heavy I/O), exchanges can be held off for
- * at most R_A_TOV. Therefore, the driver will wait 4 * R_A_TOV before
- * scheduling a recovery (big hammer).
- */
-static inline void
-qla2x00_add_iodesc_timer(struct io_descriptor *iodesc)
-{
- unsigned long timeout;
-
- timeout = (iodesc->ha->r_a_tov * 4) / 10;
- init_timer(&iodesc->timer);
- iodesc->timer.data = (unsigned long) iodesc;
- iodesc->timer.expires = jiffies + (timeout * HZ);
- iodesc->timer.function =
- (void (*) (unsigned long)) qla2x00_iodesc_timeout;
- add_timer(&iodesc->timer);
-}
-
-/**
- * IO descriptor support routines.
- **/
-
-/**
- * qla2x00_update_login_fcport() - Update fcport data after login processing.
- * @ha: HA context
- * @mbxstat: Mailbox command status IOCB
- * @fcport: port to update
- */
-static inline void
-qla2x00_update_login_fcport(scsi_qla_host_t *ha, struct mbx_entry *mbxstat,
- fc_port_t *fcport)
-{
- if (le16_to_cpu(mbxstat->mb1) & BIT_0) {
- fcport->port_type = FCT_INITIATOR;
- } else {
- fcport->port_type = FCT_TARGET;
- if (le16_to_cpu(mbxstat->mb1) & BIT_1) {
- fcport->flags |= FCF_TAPE_PRESENT;
- }
- }
- fcport->login_retry = 0;
- fcport->port_login_retry_count = ha->port_down_retry_count *
- PORT_RETRY_TIME;
- atomic_set(&fcport->port_down_timer, ha->port_down_retry_count *
- PORT_RETRY_TIME);
- fcport->flags |= FCF_FABRIC_DEVICE;
- fcport->flags &= ~FCF_FAILOVER_NEEDED;
- fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
- atomic_set(&fcport->state, FCS_ONLINE);
-}
-
-
-/**
- * Mailbox IOCB commands.
- **/
-
-/**
- * qla2x00_get_mbx_iocb_entry() - Retrieve an IOCB from the request queue.
- * @ha: HA context
- * @handle: handle to io descriptor
- *
- * Returns a pointer to the reqest entry, or NULL, if none were available.
- */
-static inline struct mbx_entry *
-qla2x00_get_mbx_iocb_entry(scsi_qla_host_t *ha, uint32_t handle)
-{
- uint16_t cnt;
- struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
- struct mbx_entry *mbxentry;
-
- mbxentry = NULL;
-
- if (ha->req_q_cnt < 3) {
- cnt = qla2x00_debounce_register(ISP_REQ_Q_OUT(ha, reg));
- if (ha->req_ring_index < cnt)
- ha->req_q_cnt = cnt - ha->req_ring_index;
- else
- ha->req_q_cnt = ha->request_q_length -
- (ha->req_ring_index - cnt);
- }
- if (ha->req_q_cnt >= 3) {
- mbxentry = (struct mbx_entry *)ha->request_ring_ptr;
-
- memset(mbxentry, 0, sizeof(struct mbx_entry));
- mbxentry->entry_type = MBX_IOCB_TYPE;
- mbxentry->entry_count = 1;
- mbxentry->sys_define1 = SOURCE_ASYNC_IOCB;
- mbxentry->handle = handle;
- }
- return (mbxentry);
-}
-
-/**
- * qla2x00_send_abort_iocb() - Issue an abort IOCB to the firmware.
- * @ha: HA context
- * @iodesc: io descriptor
- * @handle_to_abort: firmware handle to abort
- * @ha_locked: is function called with the hardware lock
- *
- * Returns QLA_SUCCESS if the IOCB was issued.
- */
-static int
-qla2x00_send_abort_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- uint32_t handle_to_abort, int ha_locked)
-{
- unsigned long flags = 0;
- struct mbx_entry *mbxentry;
-
- /* Send marker if required. */
- if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS)
- return (QLA_FUNCTION_FAILED);
-
- if (!ha_locked)
- spin_lock_irqsave(&ha->hardware_lock, flags);
-
- /* Build abort mailbox IOCB. */
- mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature);
- if (mbxentry == NULL) {
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- return (QLA_FUNCTION_FAILED);
- }
- mbxentry->mb0 = __constant_cpu_to_le16(MBC_ABORT_COMMAND);
- mbxentry->mb1 = mbxentry->loop_id.extended =
- cpu_to_le16(iodesc->remote_fcport->loop_id);
- mbxentry->mb2 = LSW(handle_to_abort);
- mbxentry->mb3 = MSW(handle_to_abort);
- wmb();
-
- qla2x00_add_iodesc_timer(iodesc);
-
- /* Issue command to ISP. */
- qla2x00_isp_cmd(ha);
-
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- DEBUG14(printk("scsi(%ld): Sending Abort IOCB (%08x) to [%x], aborting "
- "%08x.\n", ha->host_no, iodesc->signature,
- iodesc->remote_fcport->loop_id, handle_to_abort));
-
- return (QLA_SUCCESS);
-}
-
-/**
- * qla2x00_send_abort_iocb_cb() - Abort IOCB callback.
- * @ha: HA context
- * @iodesc: io descriptor
- * @mbxstat: mailbox status IOCB
- *
- * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc
- * will be used for a retry.
- */
-static int
-qla2x00_send_abort_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- struct mbx_entry *mbxstat)
-{
- DEBUG14(printk("scsi(%ld): Abort IOCB -- sent to [%x/%02x%02x%02x], "
- "status=%x mb0=%x.\n", ha->host_no, iodesc->remote_fcport->loop_id,
- iodesc->d_id.b.domain, iodesc->d_id.b.area, iodesc->d_id.b.al_pa,
- le16_to_cpu(mbxstat->status), le16_to_cpu(mbxstat->mb0)));
-
- return (QLA_SUCCESS);
-}
-
-
-/**
- * qla2x00_send_adisc_iocb() - Issue a Get Port Database IOCB to the firmware.
- * @ha: HA context
- * @iodesc: io descriptor
- * @ha_locked: is function called with the hardware lock
- *
- * Returns QLA_SUCCESS if the IOCB was issued.
- */
-static int
-qla2x00_send_adisc_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- int ha_locked)
-{
- unsigned long flags = 0;
- struct mbx_entry *mbxentry;
-
- /* Send marker if required. */
- if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS)
- return (QLA_FUNCTION_FAILED);
-
- if (!ha_locked)
- spin_lock_irqsave(&ha->hardware_lock, flags);
-
- /* Build Get Port Database IOCB. */
- mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature);
- if (mbxentry == NULL) {
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- return (QLA_FUNCTION_FAILED);
- }
- mbxentry->mb0 = __constant_cpu_to_le16(MBC_GET_PORT_DATABASE);
- mbxentry->mb1 = mbxentry->loop_id.extended =
- cpu_to_le16(iodesc->remote_fcport->loop_id);
- mbxentry->mb2 = cpu_to_le16(MSW(LSD(ha->iodesc_pd_dma)));
- mbxentry->mb3 = cpu_to_le16(LSW(LSD(ha->iodesc_pd_dma)));
- mbxentry->mb6 = cpu_to_le16(MSW(MSD(ha->iodesc_pd_dma)));
- mbxentry->mb7 = cpu_to_le16(LSW(MSD(ha->iodesc_pd_dma)));
- mbxentry->mb10 = __constant_cpu_to_le16(BIT_0);
- wmb();
-
- qla2x00_add_iodesc_timer(iodesc);
-
- /* Issue command to ISP. */
- qla2x00_isp_cmd(ha);
-
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- DEBUG14(printk("scsi(%ld): Sending Adisc IOCB (%08x) to [%x].\n",
- ha->host_no, iodesc->signature, iodesc->remote_fcport->loop_id));
-
- return (QLA_SUCCESS);
-}
-
-/**
- * qla2x00_send_adisc_iocb_cb() - Get Port Database IOCB callback.
- * @ha: HA context
- * @iodesc: io descriptor
- * @mbxstat: mailbox status IOCB
- *
- * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc
- * will be used for a retry.
- */
-static int
-qla2x00_send_adisc_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- struct mbx_entry *mbxstat)
-{
- fc_port_t *remote_fcport;
-
- remote_fcport = iodesc->remote_fcport;
-
- /* Ensure the port IDs are consistent. */
- if (remote_fcport->d_id.b24 != iodesc->d_id.b24) {
- DEBUG14(printk("scsi(%ld): Adisc IOCB -- ignoring, remote port "
- "id changed from [%02x%02x%02x] to [%02x%02x%02x].\n",
- ha->host_no, remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa));
-
- return (QLA_SUCCESS);
- }
-
- /* Only process the last command. */
- if (remote_fcport->iodesc_idx_sent != iodesc->idx) {
- DEBUG14(printk("scsi(%ld): Adisc IOCB -- ignoring, sent to "
- "[%02x%02x%02x], expected %x, received %x.\n", ha->host_no,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa, remote_fcport->iodesc_idx_sent,
- iodesc->idx));
-
- return (QLA_SUCCESS);
- }
-
- if (le16_to_cpu(mbxstat->status) == CS_COMPLETE) {
- DEBUG14(printk("scsi(%ld): Adisc IOCB -- marking "
- "[%x/%02x%02x%02x] online.\n", ha->host_no,
- remote_fcport->loop_id, remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa));
-
- atomic_set(&remote_fcport->state, FCS_ONLINE);
- } else {
- DEBUG14(printk("scsi(%ld): Adisc IOCB -- marking "
- "[%x/%02x%02x%02x] lost, status=%x mb0=%x.\n", ha->host_no,
- remote_fcport->loop_id, remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa,
- le16_to_cpu(mbxstat->status), le16_to_cpu(mbxstat->mb0)));
-
- if (atomic_read(&remote_fcport->state) != FCS_DEVICE_DEAD)
- atomic_set(&remote_fcport->state, FCS_DEVICE_LOST);
- }
- remote_fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
-
- return (QLA_SUCCESS);
-}
-
-
-/**
- * qla2x00_send_logout_iocb() - Issue a fabric port logout IOCB to the firmware.
- * @ha: HA context
- * @iodesc: io descriptor
- * @ha_locked: is function called with the hardware lock
- *
- * Returns QLA_SUCCESS if the IOCB was issued.
- */
-static int
-qla2x00_send_logout_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- int ha_locked)
-{
- unsigned long flags = 0;
- struct mbx_entry *mbxentry;
-
- /* Send marker if required. */
- if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS)
- return (QLA_FUNCTION_FAILED);
-
- if (!ha_locked)
- spin_lock_irqsave(&ha->hardware_lock, flags);
-
- /* Build fabric port logout mailbox IOCB. */
- mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature);
- if (mbxentry == NULL) {
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- return (QLA_FUNCTION_FAILED);
- }
- mbxentry->mb0 = __constant_cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
- mbxentry->mb1 = mbxentry->loop_id.extended =
- cpu_to_le16(iodesc->remote_fcport->loop_id);
- wmb();
-
- qla2x00_add_iodesc_timer(iodesc);
-
- /* Issue command to ISP. */
- qla2x00_isp_cmd(ha);
-
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- DEBUG14(printk("scsi(%ld): Sending Logout IOCB (%08x) to [%x].\n",
- ha->host_no, iodesc->signature, iodesc->remote_fcport->loop_id));
-
- return (QLA_SUCCESS);
-}
-
-/**
- * qla2x00_send_logout_iocb_cb() - Fabric port logout IOCB callback.
- * @ha: HA context
- * @iodesc: io descriptor
- * @mbxstat: mailbox status IOCB
- *
- * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc
- * will be used for a retry.
- */
-static int
-qla2x00_send_logout_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- struct mbx_entry *mbxstat)
-{
- DEBUG14(printk("scsi(%ld): Logout IOCB -- sent to [%x/%02x%02x%02x], "
- "status=%x mb0=%x mb1=%x.\n", ha->host_no,
- iodesc->remote_fcport->loop_id,
- iodesc->remote_fcport->d_id.b.domain,
- iodesc->remote_fcport->d_id.b.area,
- iodesc->remote_fcport->d_id.b.al_pa, le16_to_cpu(mbxstat->status),
- le16_to_cpu(mbxstat->mb0), le16_to_cpu(mbxstat->mb1)));
-
- return (QLA_SUCCESS);
-}
-
-
-/**
- * qla2x00_send_login_iocb() - Issue a fabric port login IOCB to the firmware.
- * @ha: HA context
- * @iodesc: io descriptor
- * @d_id: port id for device
- * @ha_locked: is function called with the hardware lock
- *
- * Returns QLA_SUCCESS if the IOCB was issued.
- */
-static int
-qla2x00_send_login_iocb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- port_id_t *d_id, int ha_locked)
-{
- unsigned long flags = 0;
- struct mbx_entry *mbxentry;
-
- /* Send marker if required. */
- if (qla2x00_issue_marker(ha, ha_locked) != QLA_SUCCESS)
- return (QLA_FUNCTION_FAILED);
-
- if (!ha_locked)
- spin_lock_irqsave(&ha->hardware_lock, flags);
-
- /* Build fabric port login mailbox IOCB. */
- mbxentry = qla2x00_get_mbx_iocb_entry(ha, iodesc->signature);
- if (mbxentry == NULL) {
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- return (QLA_FUNCTION_FAILED);
- }
- mbxentry->mb0 = __constant_cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
- mbxentry->mb1 = mbxentry->loop_id.extended =
- cpu_to_le16(iodesc->remote_fcport->loop_id);
- mbxentry->mb2 = cpu_to_le16(d_id->b.domain);
- mbxentry->mb3 = cpu_to_le16(d_id->b.area << 8 | d_id->b.al_pa);
- mbxentry->mb10 = __constant_cpu_to_le16(BIT_0);
- wmb();
-
- qla2x00_add_iodesc_timer(iodesc);
-
- /* Issue command to ISP. */
- qla2x00_isp_cmd(ha);
-
- if (!ha_locked)
- spin_unlock_irqrestore(&ha->hardware_lock, flags);
-
- DEBUG14(printk("scsi(%ld): Sending Login IOCB (%08x) to "
- "[%x/%02x%02x%02x].\n", ha->host_no, iodesc->signature,
- iodesc->remote_fcport->loop_id, d_id->b.domain, d_id->b.area,
- d_id->b.al_pa));
-
- return (QLA_SUCCESS);
-}
-
-/**
- * qla2x00_send_login_iocb_cb() - Fabric port logout IOCB callback.
- * @ha: HA context
- * @iodesc: io descriptor
- * @mbxstat: mailbox status IOCB
- *
- * Returns QLA_SUCCESS if @iodesc can be freed by the caller, else, @iodesc
- * will be used for a retry.
- */
-static int
-qla2x00_send_login_iocb_cb(scsi_qla_host_t *ha, struct io_descriptor *iodesc,
- struct mbx_entry *mbxstat)
-{
- int rval;
- fc_port_t *fcport, *remote_fcport, *exist_fcport;
- struct io_descriptor *abort_iodesc, *login_iodesc;
- uint16_t status, mb[8];
- uint16_t reuse;
- uint16_t remote_loopid;
- port_id_t remote_did, inuse_did;
-
- remote_fcport = iodesc->remote_fcport;
-
- /* Only process the last command. */
- if (remote_fcport->iodesc_idx_sent != iodesc->idx) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- ignoring, sent to "
- "[%02x%02x%02x], expected %x, received %x.\n",
- ha->host_no, iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa, remote_fcport->iodesc_idx_sent,
- iodesc->idx));
-
- /* Free RSCN fcport resources. */
- if (remote_fcport->port_type == FCT_RSCN) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- Freeing RSCN "
- "fcport %p [%x/%02x%02x%02x] given ignored Login "
- "IOCB.\n", ha->host_no, remote_fcport,
- remote_fcport->loop_id,
- remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa));
-
- list_del(&remote_fcport->list);
- kfree(remote_fcport);
- }
- return (QLA_SUCCESS);
- }
-
- status = le16_to_cpu(mbxstat->status);
- mb[0] = le16_to_cpu(mbxstat->mb0);
- mb[1] = le16_to_cpu(mbxstat->mb1);
- mb[2] = le16_to_cpu(mbxstat->mb2);
- mb[6] = le16_to_cpu(mbxstat->mb6);
- mb[7] = le16_to_cpu(mbxstat->mb7);
-
- /* Good status? */
- if ((status == CS_COMPLETE || status == CS_COMPLETE_CHKCOND) &&
- mb[0] == MBS_COMMAND_COMPLETE) {
-
- DEBUG14(printk("scsi(%ld): Login IOCB -- status=%x mb1=%x pn="
- "%02x%02x%02x%02x%02x%02x%02x%02x.\n", ha->host_no, status,
- mb[1], mbxstat->port_name[0], mbxstat->port_name[1],
- mbxstat->port_name[2], mbxstat->port_name[3],
- mbxstat->port_name[4], mbxstat->port_name[5],
- mbxstat->port_name[6], mbxstat->port_name[7]));
-
- memcpy(remote_fcport->node_name, mbxstat->node_name, WWN_SIZE);
- memcpy(remote_fcport->port_name, mbxstat->port_name, WWN_SIZE);
-
- /* Is the device already in our fcports list? */
- if (remote_fcport->port_type != FCT_RSCN) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- marking "
- "[%x/%02x%02x%02x] online.\n", ha->host_no,
- remote_fcport->loop_id,
- remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa));
-
- qla2x00_update_login_fcport(ha, mbxstat, remote_fcport);
-
- return (QLA_SUCCESS);
- }
-
- /* Does the RSCN portname already exist in our fcports list? */
- exist_fcport = NULL;
- list_for_each_entry(fcport, &ha->fcports, list) {
- if (memcmp(remote_fcport->port_name, fcport->port_name,
- WWN_SIZE) == 0) {
- exist_fcport = fcport;
- break;
- }
- }
- if (exist_fcport != NULL) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- found RSCN "
- "fcport in fcports list [%p].\n", ha->host_no,
- exist_fcport));
-
- /* Abort any ADISC that could have been sent. */
- if (exist_fcport->iodesc_idx_sent != iodesc->idx &&
- exist_fcport->iodesc_idx_sent <
- MAX_IO_DESCRIPTORS &&
- ha->io_descriptors[exist_fcport->iodesc_idx_sent].
- cb_idx == ADISC_PORT_IOCB_CB) {
-
- abort_iodesc = qla2x00_alloc_iodesc(ha);
- if (abort_iodesc) {
- DEBUG14(printk("scsi(%ld): Login IOCB "
- "-- issuing abort to outstanding "
- "Adisc [%x/%02x%02x%02x].\n",
- ha->host_no, remote_fcport->loop_id,
- exist_fcport->d_id.b.domain,
- exist_fcport->d_id.b.area,
- exist_fcport->d_id.b.al_pa));
-
- abort_iodesc->cb_idx = ABORT_IOCB_CB;
- abort_iodesc->d_id.b24 =
- exist_fcport->d_id.b24;
- abort_iodesc->remote_fcport =
- exist_fcport;
- exist_fcport->iodesc_idx_sent =
- abort_iodesc->idx;
- qla2x00_send_abort_iocb(ha,
- abort_iodesc, ha->io_descriptors[
- exist_fcport->iodesc_idx_sent].
- signature, 1);
- } else {
- DEBUG14(printk("scsi(%ld): Login IOCB "
- "-- unable to abort outstanding "
- "Adisc [%x/%02x%02x%02x].\n",
- ha->host_no, remote_fcport->loop_id,
- exist_fcport->d_id.b.domain,
- exist_fcport->d_id.b.area,
- exist_fcport->d_id.b.al_pa));
- }
- }
-
- /*
- * If the existing fcport is waiting to send an ADISC
- * or LOGIN, then reuse remote fcport (RSCN) to
- * continue waiting.
- */
- reuse = 0;
- remote_loopid = remote_fcport->loop_id;
- remote_did.b24 = remote_fcport->d_id.b24;
- if (exist_fcport->iodesc_idx_sent ==
- IODESC_ADISC_NEEDED ||
- exist_fcport->iodesc_idx_sent ==
- IODESC_LOGIN_NEEDED) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- "
- "existing fcport [%x/%02x%02x%02x] "
- "waiting for IO descriptor, reuse RSCN "
- "fcport.\n", ha->host_no,
- exist_fcport->loop_id,
- exist_fcport->d_id.b.domain,
- exist_fcport->d_id.b.area,
- exist_fcport->d_id.b.al_pa));
-
- reuse++;
- remote_fcport->iodesc_idx_sent =
- exist_fcport->iodesc_idx_sent;
- exist_fcport->iodesc_idx_sent =
- IODESC_INVALID_INDEX;
- remote_fcport->loop_id = exist_fcport->loop_id;
- remote_fcport->d_id.b24 =
- exist_fcport->d_id.b24;
- }
-
- /* Logout the old loopid. */
- if (!reuse &&
- exist_fcport->loop_id != remote_fcport->loop_id &&
- exist_fcport->loop_id != FC_NO_LOOP_ID) {
- login_iodesc = qla2x00_alloc_iodesc(ha);
- if (login_iodesc) {
- DEBUG14(printk("scsi(%ld): Login IOCB "
- "-- issuing logout to free old "
- "loop id [%x/%02x%02x%02x].\n",
- ha->host_no, exist_fcport->loop_id,
- exist_fcport->d_id.b.domain,
- exist_fcport->d_id.b.area,
- exist_fcport->d_id.b.al_pa));
-
- login_iodesc->cb_idx =
- LOGOUT_PORT_IOCB_CB;
- login_iodesc->d_id.b24 =
- exist_fcport->d_id.b24;
- login_iodesc->remote_fcport =
- exist_fcport;
- exist_fcport->iodesc_idx_sent =
- login_iodesc->idx;
- qla2x00_send_logout_iocb(ha,
- login_iodesc, 1);
- } else {
- /* Ran out of IO descriptiors. */
- DEBUG14(printk("scsi(%ld): Login IOCB "
- "-- unable to logout to free old "
- "loop id [%x/%02x%02x%02x].\n",
- ha->host_no, exist_fcport->loop_id,
- exist_fcport->d_id.b.domain,
- exist_fcport->d_id.b.area,
- exist_fcport->d_id.b.al_pa));
-
- exist_fcport->iodesc_idx_sent =
- IODESC_INVALID_INDEX;
- }
-
- }
-
- /* Update existing fcport with remote fcport info. */
- DEBUG14(printk("scsi(%ld): Login IOCB -- marking "
- "existing fcport [%x/%02x%02x%02x] online.\n",
- ha->host_no, remote_loopid, remote_did.b.domain,
- remote_did.b.area, remote_did.b.al_pa));
-
- memcpy(exist_fcport->node_name,
- remote_fcport->node_name, WWN_SIZE);
- exist_fcport->loop_id = remote_loopid;
- exist_fcport->d_id.b24 = remote_did.b24;
- qla2x00_update_login_fcport(ha, mbxstat, exist_fcport);
-
- /* Finally, free the remote (RSCN) fcport. */
- if (!reuse) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- "
- "Freeing RSCN fcport %p "
- "[%x/%02x%02x%02x].\n", ha->host_no,
- remote_fcport, remote_fcport->loop_id,
- remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa));
-
- list_del(&remote_fcport->list);
- kfree(remote_fcport);
- }
-
- return (QLA_SUCCESS);
- }
-
- /*
- * A new device has been added, move the RSCN fcport to our
- * fcports list.
- */
- DEBUG14(printk("scsi(%ld): Login IOCB -- adding RSCN fcport "
- "[%x/%02x%02x%02x] to fcports list.\n", ha->host_no,
- remote_fcport->loop_id, remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area, remote_fcport->d_id.b.al_pa));
-
- list_del(&remote_fcport->list);
- remote_fcport->flags = (FCF_RLC_SUPPORT | FCF_RESCAN_NEEDED);
- qla2x00_update_login_fcport(ha, mbxstat, remote_fcport);
- list_add_tail(&remote_fcport->list, &ha->fcports);
- set_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags);
- } else {
- /* Handle login failure. */
- if (remote_fcport->login_retry != 0) {
- if (mb[0] == MBS_LOOP_ID_USED) {
- inuse_did.b.domain = LSB(mb[1]);
- inuse_did.b.area = MSB(mb[2]);
- inuse_did.b.al_pa = LSB(mb[2]);
-
- DEBUG14(printk("scsi(%ld): Login IOCB -- loop "
- "id [%x] used by port id [%02x%02x%02x].\n",
- ha->host_no, remote_fcport->loop_id,
- inuse_did.b.domain, inuse_did.b.area,
- inuse_did.b.al_pa));
-
- if (remote_fcport->d_id.b24 ==
- INVALID_PORT_ID) {
- /*
- * Invalid port id means we are trying
- * to login to a remote port with just
- * a loop id without knowing about the
- * port id. Copy the port id and try
- * again.
- */
- remote_fcport->d_id.b24 = inuse_did.b24;
- iodesc->d_id.b24 = inuse_did.b24;
- } else {
- remote_fcport->loop_id++;
- rval = qla2x00_find_new_loop_id(ha,
- remote_fcport);
- if (rval == QLA_FUNCTION_FAILED) {
- /* No more loop ids. */
- return (QLA_SUCCESS);
- }
- }
- } else if (mb[0] == MBS_PORT_ID_USED) {
- /*
- * Device has another loop ID. The firmware
- * group recommends the driver perform an
- * implicit login with the specified ID.
- */
- DEBUG14(printk("scsi(%ld): Login IOCB -- port "
- "id [%02x%02x%02x] already assigned to "
- "loop id [%x].\n", ha->host_no,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa, mb[1]));
-
- remote_fcport->loop_id = mb[1];
-
- } else {
- /* Unable to perform login, try again. */
- DEBUG14(printk("scsi(%ld): Login IOCB -- "
- "failed login [%x/%02x%02x%02x], status=%x "
- "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
- ha->host_no, remote_fcport->loop_id,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa, status, mb[0], mb[1],
- mb[2], mb[6], mb[7]));
- }
-
- /* Reissue Login with the same IO descriptor. */
- iodesc->signature =
- qla2x00_iodesc_to_handle(iodesc);
- iodesc->cb_idx = LOGIN_PORT_IOCB_CB;
- iodesc->d_id.b24 = remote_fcport->d_id.b24;
- remote_fcport->iodesc_idx_sent = iodesc->idx;
- remote_fcport->login_retry--;
-
- DEBUG14(printk("scsi(%ld): Login IOCB -- retrying "
- "login to [%x/%02x%02x%02x] (%d).\n", ha->host_no,
- remote_fcport->loop_id,
- remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa,
- remote_fcport->login_retry));
-
- qla2x00_send_login_iocb(ha, iodesc,
- &remote_fcport->d_id, 1);
-
- return (QLA_FUNCTION_FAILED);
- } else {
- /* No more logins, mark device dead. */
- DEBUG14(printk("scsi(%ld): Login IOCB -- failed "
- "login [%x/%02x%02x%02x] after retries, status=%x "
- "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
- ha->host_no, remote_fcport->loop_id,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa, status, mb[0], mb[1],
- mb[2], mb[6], mb[7]));
-
- atomic_set(&remote_fcport->state, FCS_DEVICE_DEAD);
- if (remote_fcport->port_type == FCT_RSCN) {
- DEBUG14(printk("scsi(%ld): Login IOCB -- "
- "Freeing dead RSCN fcport %p "
- "[%x/%02x%02x%02x].\n", ha->host_no,
- remote_fcport, remote_fcport->loop_id,
- remote_fcport->d_id.b.domain,
- remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa));
-
- list_del(&remote_fcport->list);
- kfree(remote_fcport);
- }
- }
- }
-
- return (QLA_SUCCESS);
-}
-
-
-/**
- * IO descriptor processing routines.
- **/
-
-/**
- * qla2x00_alloc_rscn_fcport() - Allocate an RSCN type fcport.
- * @ha: HA context
- * @flags: allocation flags
- *
- * Returns a pointer to the allocated RSCN fcport, or NULL, if none available.
- */
-fc_port_t *
-qla2x00_alloc_rscn_fcport(scsi_qla_host_t *ha, gfp_t flags)
-{
- fc_port_t *fcport;
-
- fcport = qla2x00_alloc_fcport(ha, flags);
- if (fcport == NULL)
- return (fcport);
-
- /* Setup RSCN fcport structure. */
- fcport->port_type = FCT_RSCN;
-
- return (fcport);
-}
-
-/**
- * qla2x00_handle_port_rscn() - Handle port RSCN.
- * @ha: HA context
- * @rscn_entry: RSCN entry
- * @fcport: fcport entry to updated
- *
- * Returns QLA_SUCCESS if the port RSCN was handled.
- */
-int
-qla2x00_handle_port_rscn(scsi_qla_host_t *ha, uint32_t rscn_entry,
- fc_port_t *known_fcport, int ha_locked)
-{
- int rval;
- port_id_t rscn_pid;
- fc_port_t *fcport, *remote_fcport, *rscn_fcport;
- struct io_descriptor *iodesc;
-
- remote_fcport = NULL;
- rscn_fcport = NULL;
-
- /* Prepare port id based on incoming entries. */
- if (known_fcport) {
- rscn_pid.b24 = known_fcport->d_id.b24;
- remote_fcport = known_fcport;
-
- DEBUG14(printk("scsi(%ld): Handle RSCN -- process RSCN for "
- "fcport [%02x%02x%02x].\n", ha->host_no,
- remote_fcport->d_id.b.domain, remote_fcport->d_id.b.area,
- remote_fcport->d_id.b.al_pa));
- } else {
- rscn_pid.b.domain = LSB(MSW(rscn_entry));
- rscn_pid.b.area = MSB(LSW(rscn_entry));
- rscn_pid.b.al_pa = LSB(LSW(rscn_entry));
-
- DEBUG14(printk("scsi(%ld): Handle RSCN -- process RSCN for "
- "port id [%02x%02x%02x].\n", ha->host_no,
- rscn_pid.b.domain, rscn_pid.b.area, rscn_pid.b.al_pa));
-
- /*
- * Search fcport lists for a known entry at the specified port
- * ID.
- */
- list_for_each_entry(fcport, &ha->fcports, list) {
- if (rscn_pid.b24 == fcport->d_id.b24) {
- remote_fcport = fcport;
- break;
- }
- }
- list_for_each_entry(fcport, &ha->rscn_fcports, list) {
- if (rscn_pid.b24 == fcport->d_id.b24) {
- rscn_fcport = fcport;
- break;
- }
- }
- if (remote_fcport == NULL)
- remote_fcport = rscn_fcport;
- }
-
- /*
- * If the port is already in our fcport list and online, send an ADISC
- * to see if it's still alive. Issue login if a new fcport or the known
- * fcport is currently offline.
- */
- if (remote_fcport) {
- /*
- * No need to send request if the remote fcport is currently
- * waiting for an available io descriptor.
- */
- if (known_fcport == NULL &&
- (remote_fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED ||
- remote_fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED)) {
- /*
- * If previous waiting io descriptor is an ADISC, then
- * the new RSCN may come from a new remote fcport being
- * plugged into the same location.
- */
- if (remote_fcport->port_type == FCT_RSCN) {
- remote_fcport->iodesc_idx_sent =
- IODESC_LOGIN_NEEDED;
- } else if (remote_fcport->iodesc_idx_sent ==
- IODESC_ADISC_NEEDED) {
- fc_port_t *new_fcport;
-
- remote_fcport->iodesc_idx_sent =
- IODESC_INVALID_INDEX;
-
- /* Create new fcport for later login. */
- new_fcport = qla2x00_alloc_rscn_fcport(ha,
- ha_locked ? GFP_ATOMIC: GFP_KERNEL);
- if (new_fcport) {
- DEBUG14(printk("scsi(%ld): Handle RSCN "
- "-- creating RSCN fcport %p for "
- "future login.\n", ha->host_no,
- new_fcport));
-
- new_fcport->d_id.b24 =
- remote_fcport->d_id.b24;
- new_fcport->iodesc_idx_sent =
- IODESC_LOGIN_NEEDED;
-
- list_add_tail(&new_fcport->list,
- &ha->rscn_fcports);
- set_bit(IODESC_PROCESS_NEEDED,
- &ha->dpc_flags);
- } else {
- DEBUG14(printk("scsi(%ld): Handle RSCN "
- "-- unable to allocate RSCN fcport "
- "for future login.\n",
- ha->host_no));
- }
- }
- return (QLA_SUCCESS);
- }
-
- /* Send ADISC if the fcport is online */
- if (atomic_read(&remote_fcport->state) == FCS_ONLINE ||
- remote_fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED) {
-
- atomic_set(&remote_fcport->state, FCS_DEVICE_LOST);
-
- iodesc = qla2x00_alloc_iodesc(ha);
- if (iodesc == NULL) {
- /* Mark fcport for later adisc processing */
- DEBUG14(printk("scsi(%ld): Handle RSCN -- not "
- "enough IO descriptors for Adisc, flag "
- "for later processing.\n", ha->host_no));
-
- remote_fcport->iodesc_idx_sent =
- IODESC_ADISC_NEEDED;
- set_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags);
-
- return (QLA_SUCCESS);
- }
-
- iodesc->cb_idx = ADISC_PORT_IOCB_CB;
- iodesc->d_id.b24 = rscn_pid.b24;
- iodesc->remote_fcport = remote_fcport;
- remote_fcport->iodesc_idx_sent = iodesc->idx;
- qla2x00_send_adisc_iocb(ha, iodesc, ha_locked);
-
- return (QLA_SUCCESS);
- } else if (remote_fcport->iodesc_idx_sent <
- MAX_IO_DESCRIPTORS &&
- ha->io_descriptors[remote_fcport->iodesc_idx_sent].cb_idx ==
- ADISC_PORT_IOCB_CB) {
- /*
- * Receiving another RSCN while an ADISC is pending,
- * abort the IOCB. Use the same descriptor for the
- * abort.
- */
- uint32_t handle_to_abort;
-
- iodesc = &ha->io_descriptors[
- remote_fcport->iodesc_idx_sent];
- qla2x00_remove_iodesc_timer(iodesc);
- handle_to_abort = iodesc->signature;
- iodesc->signature = qla2x00_iodesc_to_handle(iodesc);
- iodesc->cb_idx = ABORT_IOCB_CB;
- iodesc->d_id.b24 = remote_fcport->d_id.b24;
- iodesc->remote_fcport = remote_fcport;
- remote_fcport->iodesc_idx_sent = iodesc->idx;
-
- DEBUG14(printk("scsi(%ld): Handle RSCN -- issuing "
- "abort to outstanding Adisc [%x/%02x%02x%02x].\n",
- ha->host_no, remote_fcport->loop_id,
- iodesc->d_id.b.domain, iodesc->d_id.b.area,
- iodesc->d_id.b.al_pa));
-
- qla2x00_send_abort_iocb(ha, iodesc, handle_to_abort,
- ha_locked);
- }
- }
-
- /* We need to login to the remote port, find it. */
- if (known_fcport) {
- remote_fcport = known_fcport;
- } else if (rscn_fcport && rscn_fcport->d_id.b24 != INVALID_PORT_ID &&
- rscn_fcport->iodesc_idx_sent < MAX_IO_DESCRIPTORS &&
- ha->io_descriptors[rscn_fcport->iodesc_idx_sent].cb_idx ==
- LOGIN_PORT_IOCB_CB) {
- /*
- * Ignore duplicate RSCN on fcport which has already
- * initiated a login IOCB.
- */
- DEBUG14(printk("scsi(%ld): Handle RSCN -- ignoring, login "
- "already sent to [%02x%02x%02x].\n", ha->host_no,
- rscn_fcport->d_id.b.domain, rscn_fcport->d_id.b.area,
- rscn_fcport->d_id.b.al_pa));
-
- return (QLA_SUCCESS);
- } else if (rscn_fcport && rscn_fcport->d_id.b24 != INVALID_PORT_ID &&
- rscn_fcport != remote_fcport) {
- /* Reuse same rscn fcport. */
- DEBUG14(printk("scsi(%ld): Handle RSCN -- reusing RSCN fcport "
- "[%02x%02x%02x].\n", ha->host_no,
- rscn_fcport->d_id.b.domain, rscn_fcport->d_id.b.area,
- rscn_fcport->d_id.b.al_pa));
-
- remote_fcport = rscn_fcport;
- } else {
- /* Create new fcport for later login. */
- remote_fcport = qla2x00_alloc_rscn_fcport(ha,
- ha_locked ? GFP_ATOMIC: GFP_KERNEL);
- list_add_tail(&remote_fcport->list, &ha->rscn_fcports);
- }
- if (remote_fcport == NULL)
- return (QLA_SUCCESS);
-
- /* Prepare fcport for login. */
- atomic_set(&remote_fcport->state, FCS_DEVICE_LOST);
- remote_fcport->login_retry = 3; /* ha->login_retry_count; */
- remote_fcport->d_id.b24 = rscn_pid.b24;
-
- iodesc = qla2x00_alloc_iodesc(ha);
- if (iodesc == NULL) {
- /* Mark fcport for later adisc processing. */
- DEBUG14(printk("scsi(%ld): Handle RSCN -- not enough IO "
- "descriptors for Login, flag for later processing.\n",
- ha->host_no));
-
- remote_fcport->iodesc_idx_sent = IODESC_LOGIN_NEEDED;
- set_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags);
-
- return (QLA_SUCCESS);
- }
-
- if (known_fcport == NULL || rscn_pid.b24 != INVALID_PORT_ID) {
- remote_fcport->loop_id = ha->min_external_loopid;
-
- rval = qla2x00_find_new_loop_id(ha, remote_fcport);
- if (rval == QLA_FUNCTION_FAILED) {
- /* No more loop ids, failed. */
- DEBUG14(printk("scsi(%ld): Handle RSCN -- no available "
- "loop id to perform Login, failed.\n",
- ha->host_no));
-
- return (rval);
- }
- }
-
- iodesc->cb_idx = LOGIN_PORT_IOCB_CB;
- iodesc->d_id.b24 = rscn_pid.b24;
- iodesc->remote_fcport = remote_fcport;
- remote_fcport->iodesc_idx_sent = iodesc->idx;
-
- DEBUG14(printk("scsi(%ld): Handle RSCN -- attempting login to "
- "[%x/%02x%02x%02x].\n", ha->host_no, remote_fcport->loop_id,
- iodesc->d_id.b.domain, iodesc->d_id.b.area, iodesc->d_id.b.al_pa));
-
- qla2x00_send_login_iocb(ha, iodesc, &rscn_pid, ha_locked);
-
- return (QLA_SUCCESS);
-}
-
-/**
- * qla2x00_process_iodesc() - Complete IO descriptor processing.
- * @ha: HA context
- * @mbxstat: Mailbox IOCB status
- */
-void
-qla2x00_process_iodesc(scsi_qla_host_t *ha, struct mbx_entry *mbxstat)
-{
- int rval;
- uint32_t signature;
- fc_port_t *fcport;
- struct io_descriptor *iodesc;
-
- signature = mbxstat->handle;
-
- DEBUG14(printk("scsi(%ld): Process IODesc -- processing %08x.\n",
- ha->host_no, signature));
-
- /* Retrieve proper IO descriptor. */
- iodesc = qla2x00_handle_to_iodesc(ha, signature);
- if (iodesc == NULL) {
- DEBUG14(printk("scsi(%ld): Process IODesc -- ignoring, "
- "incorrect signature %08x.\n", ha->host_no, signature));
-
- return;
- }
-
- /* Stop IO descriptor timer. */
- qla2x00_remove_iodesc_timer(iodesc);
-
- /* Verify signature match. */
- if (iodesc->signature != signature) {
- DEBUG14(printk("scsi(%ld): Process IODesc -- ignoring, "
- "signature mismatch, sent %08x, received %08x.\n",
- ha->host_no, iodesc->signature, signature));
-
- return;
- }
-
- /* Go with IOCB callback. */
- rval = iocb_function_cb_list[iodesc->cb_idx](ha, iodesc, mbxstat);
- if (rval != QLA_SUCCESS) {
- /* IO descriptor reused by callback. */
- return;
- }
-
- qla2x00_free_iodesc(iodesc);
-
- if (test_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags)) {
- /* Scan our fcports list for any RSCN requests. */
- list_for_each_entry(fcport, &ha->fcports, list) {
- if (fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED ||
- fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED) {
- qla2x00_handle_port_rscn(ha, 0, fcport, 1);
- return;
- }
- }
-
- /* Scan our RSCN fcports list for any RSCN requests. */
- list_for_each_entry(fcport, &ha->rscn_fcports, list) {
- if (fcport->iodesc_idx_sent == IODESC_ADISC_NEEDED ||
- fcport->iodesc_idx_sent == IODESC_LOGIN_NEEDED) {
- qla2x00_handle_port_rscn(ha, 0, fcport, 1);
- return;
- }
- }
- }
- clear_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags);
-}
-
-/**
- * qla2x00_cancel_io_descriptors() - Cancel all outstanding io descriptors.
- * @ha: HA context
- *
- * This routine will also delete any RSCN entries related to the outstanding
- * IO descriptors.
- */
-void
-qla2x00_cancel_io_descriptors(scsi_qla_host_t *ha)
-{
- fc_port_t *fcport, *fcptemp;
-
- clear_bit(IODESC_PROCESS_NEEDED, &ha->dpc_flags);
-
- /* Abort all IO descriptors. */
- qla2x00_init_io_descriptors(ha);
-
- /* Reset all pending IO descriptors in fcports list. */
- list_for_each_entry(fcport, &ha->fcports, list) {
- fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
- }
-
- /* Reset all pending IO descriptors in rscn fcports list. */
- list_for_each_entry_safe(fcport, fcptemp, &ha->rscn_fcports, list) {
- DEBUG14(printk("scsi(%ld): Cancel IOs -- Freeing RSCN fcport "
- "%p [%x/%02x%02x%02x].\n", ha->host_no, fcport,
- fcport->loop_id, fcport->d_id.b.domain, fcport->d_id.b.area,
- fcport->d_id.b.al_pa));
-
- list_del(&fcport->list);
- kfree(fcport);
- }
-}
projects / linux-2.6 / commitdiff