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6abf98de6f
Fixes the following W=1 kernel build warning(s): drivers/scsi/esas2r/esas2r_int.c: In function ‘esas2r_doorbell_interrupt’: drivers/scsi/esas2r/esas2r_int.c:692:22: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] drivers/scsi/esas2r/esas2r_int.c: In function ‘esas2r_send_reset_ae’: drivers/scsi/esas2r/esas2r_int.c:868:44: warning: suggest braces around empty body in an ‘else’ statement [-Wempty-body] Link: https://lore.kernel.org/r/20201102142359.561122-14-lee.jones@linaro.org Cc: Bradley Grove <linuxdrivers@attotech.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
945 lines
24 KiB
C
945 lines
24 KiB
C
/*
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* linux/drivers/scsi/esas2r/esas2r_int.c
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* esas2r interrupt handling
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*
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* Copyright (c) 2001-2013 ATTO Technology, Inc.
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* (mailto:linuxdrivers@attotech.com)
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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* NO WARRANTY
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* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
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* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
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* solely responsible for determining the appropriateness of using and
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* distributing the Program and assumes all risks associated with its
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* exercise of rights under this Agreement, including but not limited to
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* the risks and costs of program errors, damage to or loss of data,
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* programs or equipment, and unavailability or interruption of operations.
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*
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* DISCLAIMER OF LIABILITY
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* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
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* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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#include "esas2r.h"
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/* Local function prototypes */
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static void esas2r_doorbell_interrupt(struct esas2r_adapter *a, u32 doorbell);
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static void esas2r_get_outbound_responses(struct esas2r_adapter *a);
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static void esas2r_process_bus_reset(struct esas2r_adapter *a);
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/*
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* Poll the adapter for interrupts and service them.
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* This function handles both legacy interrupts and MSI.
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*/
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void esas2r_polled_interrupt(struct esas2r_adapter *a)
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{
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u32 intstat;
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u32 doorbell;
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esas2r_disable_chip_interrupts(a);
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intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT);
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if (intstat & MU_INTSTAT_POST_OUT) {
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/* clear the interrupt */
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esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT,
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MU_OLIS_INT);
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esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT);
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esas2r_get_outbound_responses(a);
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}
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if (intstat & MU_INTSTAT_DRBL) {
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doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
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if (doorbell != 0)
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esas2r_doorbell_interrupt(a, doorbell);
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}
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esas2r_enable_chip_interrupts(a);
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if (atomic_read(&a->disable_cnt) == 0)
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esas2r_do_deferred_processes(a);
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}
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/*
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* Legacy and MSI interrupt handlers. Note that the legacy interrupt handler
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* schedules a TASKLET to process events, whereas the MSI handler just
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* processes interrupt events directly.
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*/
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irqreturn_t esas2r_interrupt(int irq, void *dev_id)
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{
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struct esas2r_adapter *a = (struct esas2r_adapter *)dev_id;
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if (!esas2r_adapter_interrupt_pending(a))
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return IRQ_NONE;
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set_bit(AF2_INT_PENDING, &a->flags2);
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esas2r_schedule_tasklet(a);
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return IRQ_HANDLED;
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}
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void esas2r_adapter_interrupt(struct esas2r_adapter *a)
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{
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u32 doorbell;
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if (likely(a->int_stat & MU_INTSTAT_POST_OUT)) {
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/* clear the interrupt */
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esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT,
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MU_OLIS_INT);
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esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT);
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esas2r_get_outbound_responses(a);
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}
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if (unlikely(a->int_stat & MU_INTSTAT_DRBL)) {
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doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
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if (doorbell != 0)
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esas2r_doorbell_interrupt(a, doorbell);
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}
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a->int_mask = ESAS2R_INT_STS_MASK;
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esas2r_enable_chip_interrupts(a);
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if (likely(atomic_read(&a->disable_cnt) == 0))
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esas2r_do_deferred_processes(a);
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}
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irqreturn_t esas2r_msi_interrupt(int irq, void *dev_id)
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{
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struct esas2r_adapter *a = (struct esas2r_adapter *)dev_id;
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u32 intstat;
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u32 doorbell;
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intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT);
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if (likely(intstat & MU_INTSTAT_POST_OUT)) {
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/* clear the interrupt */
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esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT,
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MU_OLIS_INT);
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esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT);
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esas2r_get_outbound_responses(a);
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}
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if (unlikely(intstat & MU_INTSTAT_DRBL)) {
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doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
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if (doorbell != 0)
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esas2r_doorbell_interrupt(a, doorbell);
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}
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/*
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* Work around a chip bug and force a new MSI to be sent if one is
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* still pending.
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*/
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esas2r_disable_chip_interrupts(a);
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esas2r_enable_chip_interrupts(a);
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if (likely(atomic_read(&a->disable_cnt) == 0))
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esas2r_do_deferred_processes(a);
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esas2r_do_tasklet_tasks(a);
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return 1;
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}
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static void esas2r_handle_outbound_rsp_err(struct esas2r_adapter *a,
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struct esas2r_request *rq,
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struct atto_vda_ob_rsp *rsp)
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{
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/*
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* For I/O requests, only copy the response if an error
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* occurred and setup a callback to do error processing.
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*/
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if (unlikely(rq->req_stat != RS_SUCCESS)) {
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memcpy(&rq->func_rsp, &rsp->func_rsp, sizeof(rsp->func_rsp));
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if (rq->req_stat == RS_ABORTED) {
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if (rq->timeout > RQ_MAX_TIMEOUT)
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rq->req_stat = RS_TIMEOUT;
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} else if (rq->req_stat == RS_SCSI_ERROR) {
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u8 scsistatus = rq->func_rsp.scsi_rsp.scsi_stat;
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esas2r_trace("scsistatus: %x", scsistatus);
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/* Any of these are a good result. */
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if (scsistatus == SAM_STAT_GOOD || scsistatus ==
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SAM_STAT_CONDITION_MET || scsistatus ==
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SAM_STAT_INTERMEDIATE || scsistatus ==
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SAM_STAT_INTERMEDIATE_CONDITION_MET) {
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rq->req_stat = RS_SUCCESS;
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rq->func_rsp.scsi_rsp.scsi_stat =
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SAM_STAT_GOOD;
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}
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}
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}
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}
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static void esas2r_get_outbound_responses(struct esas2r_adapter *a)
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{
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struct atto_vda_ob_rsp *rsp;
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u32 rspput_ptr;
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u32 rspget_ptr;
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struct esas2r_request *rq;
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u32 handle;
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unsigned long flags;
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LIST_HEAD(comp_list);
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esas2r_trace_enter();
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spin_lock_irqsave(&a->queue_lock, flags);
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/* Get the outbound limit and pointers */
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rspput_ptr = le32_to_cpu(*a->outbound_copy) & MU_OLC_WRT_PTR;
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rspget_ptr = a->last_read;
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esas2r_trace("rspput_ptr: %x, rspget_ptr: %x", rspput_ptr, rspget_ptr);
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/* If we don't have anything to process, get out */
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if (unlikely(rspget_ptr == rspput_ptr)) {
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_trace_exit();
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return;
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}
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/* Make sure the firmware is healthy */
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if (unlikely(rspput_ptr >= a->list_size)) {
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_bugon();
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esas2r_local_reset_adapter(a);
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esas2r_trace_exit();
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return;
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}
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do {
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rspget_ptr++;
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if (rspget_ptr >= a->list_size)
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rspget_ptr = 0;
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rsp = (struct atto_vda_ob_rsp *)a->outbound_list_md.virt_addr
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+ rspget_ptr;
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handle = rsp->handle;
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/* Verify the handle range */
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if (unlikely(LOWORD(handle) == 0
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|| LOWORD(handle) > num_requests +
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num_ae_requests + 1)) {
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esas2r_bugon();
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continue;
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}
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/* Get the request for this handle */
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rq = a->req_table[LOWORD(handle)];
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if (unlikely(rq == NULL || rq->vrq->scsi.handle != handle)) {
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esas2r_bugon();
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continue;
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}
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list_del(&rq->req_list);
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/* Get the completion status */
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rq->req_stat = rsp->req_stat;
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esas2r_trace("handle: %x", handle);
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esas2r_trace("rq: %p", rq);
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esas2r_trace("req_status: %x", rq->req_stat);
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if (likely(rq->vrq->scsi.function == VDA_FUNC_SCSI)) {
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esas2r_handle_outbound_rsp_err(a, rq, rsp);
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} else {
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/*
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* Copy the outbound completion struct for non-I/O
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* requests.
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*/
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memcpy(&rq->func_rsp, &rsp->func_rsp,
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sizeof(rsp->func_rsp));
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}
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/* Queue the request for completion. */
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list_add_tail(&rq->comp_list, &comp_list);
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} while (rspget_ptr != rspput_ptr);
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a->last_read = rspget_ptr;
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_comp_list_drain(a, &comp_list);
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esas2r_trace_exit();
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}
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/*
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* Perform all deferred processes for the adapter. Deferred
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* processes can only be done while the current interrupt
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* disable_cnt for the adapter is zero.
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*/
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void esas2r_do_deferred_processes(struct esas2r_adapter *a)
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{
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int startreqs = 2;
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struct esas2r_request *rq;
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unsigned long flags;
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/*
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* startreqs is used to control starting requests
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* that are on the deferred queue
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* = 0 - do not start any requests
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* = 1 - can start discovery requests
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* = 2 - can start any request
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*/
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if (test_bit(AF_CHPRST_PENDING, &a->flags) ||
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test_bit(AF_FLASHING, &a->flags))
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startreqs = 0;
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else if (test_bit(AF_DISC_PENDING, &a->flags))
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startreqs = 1;
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atomic_inc(&a->disable_cnt);
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/* Clear off the completed list to be processed later. */
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if (esas2r_is_tasklet_pending(a)) {
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esas2r_schedule_tasklet(a);
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startreqs = 0;
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}
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/*
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* If we can start requests then traverse the defer queue
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* looking for requests to start or complete
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*/
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if (startreqs && !list_empty(&a->defer_list)) {
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LIST_HEAD(comp_list);
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struct list_head *element, *next;
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spin_lock_irqsave(&a->queue_lock, flags);
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list_for_each_safe(element, next, &a->defer_list) {
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rq = list_entry(element, struct esas2r_request,
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req_list);
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if (rq->req_stat != RS_PENDING) {
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list_del(element);
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list_add_tail(&rq->comp_list, &comp_list);
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}
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/*
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* Process discovery and OS requests separately. We
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* can't hold up discovery requests when discovery is
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* pending. In general, there may be different sets of
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* conditions for starting different types of requests.
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*/
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else if (rq->req_type == RT_DISC_REQ) {
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list_del(element);
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esas2r_disc_local_start_request(a, rq);
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} else if (startreqs == 2) {
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list_del(element);
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esas2r_local_start_request(a, rq);
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/*
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* Flashing could have been set by last local
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* start
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*/
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if (test_bit(AF_FLASHING, &a->flags))
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break;
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}
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}
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_comp_list_drain(a, &comp_list);
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}
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atomic_dec(&a->disable_cnt);
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}
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/*
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* Process an adapter reset (or one that is about to happen)
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* by making sure all outstanding requests are completed that
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* haven't been already.
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*/
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void esas2r_process_adapter_reset(struct esas2r_adapter *a)
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{
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struct esas2r_request *rq = &a->general_req;
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unsigned long flags;
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struct esas2r_disc_context *dc;
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LIST_HEAD(comp_list);
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struct list_head *element;
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esas2r_trace_enter();
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spin_lock_irqsave(&a->queue_lock, flags);
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/* abort the active discovery, if any. */
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if (rq->interrupt_cx) {
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dc = (struct esas2r_disc_context *)rq->interrupt_cx;
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dc->disc_evt = 0;
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clear_bit(AF_DISC_IN_PROG, &a->flags);
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}
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/*
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* just clear the interrupt callback for now. it will be dequeued if
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* and when we find it on the active queue and we don't want the
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* callback called. also set the dummy completion callback in case we
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* were doing an I/O request.
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*/
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rq->interrupt_cx = NULL;
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rq->interrupt_cb = NULL;
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rq->comp_cb = esas2r_dummy_complete;
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/* Reset the read and write pointers */
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*a->outbound_copy =
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a->last_write =
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a->last_read = a->list_size - 1;
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set_bit(AF_COMM_LIST_TOGGLE, &a->flags);
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/* Kill all the requests on the active list */
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list_for_each(element, &a->defer_list) {
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rq = list_entry(element, struct esas2r_request, req_list);
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if (rq->req_stat == RS_STARTED)
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if (esas2r_ioreq_aborted(a, rq, RS_ABORTED))
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list_add_tail(&rq->comp_list, &comp_list);
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}
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_comp_list_drain(a, &comp_list);
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esas2r_process_bus_reset(a);
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esas2r_trace_exit();
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}
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|
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static void esas2r_process_bus_reset(struct esas2r_adapter *a)
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{
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struct esas2r_request *rq;
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struct list_head *element;
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unsigned long flags;
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LIST_HEAD(comp_list);
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esas2r_trace_enter();
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esas2r_hdebug("reset detected");
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spin_lock_irqsave(&a->queue_lock, flags);
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/* kill all the requests on the deferred queue */
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list_for_each(element, &a->defer_list) {
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rq = list_entry(element, struct esas2r_request, req_list);
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if (esas2r_ioreq_aborted(a, rq, RS_ABORTED))
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list_add_tail(&rq->comp_list, &comp_list);
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}
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spin_unlock_irqrestore(&a->queue_lock, flags);
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esas2r_comp_list_drain(a, &comp_list);
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if (atomic_read(&a->disable_cnt) == 0)
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esas2r_do_deferred_processes(a);
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clear_bit(AF_OS_RESET, &a->flags);
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esas2r_trace_exit();
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}
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|
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static void esas2r_chip_rst_needed_during_tasklet(struct esas2r_adapter *a)
|
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{
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|
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clear_bit(AF_CHPRST_NEEDED, &a->flags);
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clear_bit(AF_BUSRST_NEEDED, &a->flags);
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clear_bit(AF_BUSRST_DETECTED, &a->flags);
|
|
clear_bit(AF_BUSRST_PENDING, &a->flags);
|
|
/*
|
|
* Make sure we don't get attempt more than 3 resets
|
|
* when the uptime between resets does not exceed one
|
|
* minute. This will stop any situation where there is
|
|
* really something wrong with the hardware. The way
|
|
* this works is that we start with uptime ticks at 0.
|
|
* Each time we do a reset, we add 20 seconds worth to
|
|
* the count. Each time a timer tick occurs, as long
|
|
* as a chip reset is not pending, we decrement the
|
|
* tick count. If the uptime ticks ever gets to 60
|
|
* seconds worth, we disable the adapter from that
|
|
* point forward. Three strikes, you're out.
|
|
*/
|
|
if (!esas2r_is_adapter_present(a) || (a->chip_uptime >=
|
|
ESAS2R_CHP_UPTIME_MAX)) {
|
|
esas2r_hdebug("*** adapter disabled ***");
|
|
|
|
/*
|
|
* Ok, some kind of hard failure. Make sure we
|
|
* exit this loop with chip interrupts
|
|
* permanently disabled so we don't lock up the
|
|
* entire system. Also flag degraded mode to
|
|
* prevent the heartbeat from trying to recover.
|
|
*/
|
|
|
|
set_bit(AF_DEGRADED_MODE, &a->flags);
|
|
set_bit(AF_DISABLED, &a->flags);
|
|
clear_bit(AF_CHPRST_PENDING, &a->flags);
|
|
clear_bit(AF_DISC_PENDING, &a->flags);
|
|
|
|
esas2r_disable_chip_interrupts(a);
|
|
a->int_mask = 0;
|
|
esas2r_process_adapter_reset(a);
|
|
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"Adapter disabled because of hardware failure");
|
|
} else {
|
|
bool alrdyrst = test_and_set_bit(AF_CHPRST_STARTED, &a->flags);
|
|
|
|
if (!alrdyrst)
|
|
/*
|
|
* Only disable interrupts if this is
|
|
* the first reset attempt.
|
|
*/
|
|
esas2r_disable_chip_interrupts(a);
|
|
|
|
if ((test_bit(AF_POWER_MGT, &a->flags)) &&
|
|
!test_bit(AF_FIRST_INIT, &a->flags) && !alrdyrst) {
|
|
/*
|
|
* Don't reset the chip on the first
|
|
* deferred power up attempt.
|
|
*/
|
|
} else {
|
|
esas2r_hdebug("*** resetting chip ***");
|
|
esas2r_reset_chip(a);
|
|
}
|
|
|
|
/* Kick off the reinitialization */
|
|
a->chip_uptime += ESAS2R_CHP_UPTIME_CNT;
|
|
a->chip_init_time = jiffies_to_msecs(jiffies);
|
|
if (!test_bit(AF_POWER_MGT, &a->flags)) {
|
|
esas2r_process_adapter_reset(a);
|
|
|
|
if (!alrdyrst) {
|
|
/* Remove devices now that I/O is cleaned up. */
|
|
a->prev_dev_cnt =
|
|
esas2r_targ_db_get_tgt_cnt(a);
|
|
esas2r_targ_db_remove_all(a, false);
|
|
}
|
|
}
|
|
|
|
a->int_mask = 0;
|
|
}
|
|
}
|
|
|
|
static void esas2r_handle_chip_rst_during_tasklet(struct esas2r_adapter *a)
|
|
{
|
|
while (test_bit(AF_CHPRST_DETECTED, &a->flags)) {
|
|
/*
|
|
* Balance the enable in esas2r_initadapter_hw.
|
|
* Esas2r_power_down already took care of it for power
|
|
* management.
|
|
*/
|
|
if (!test_bit(AF_DEGRADED_MODE, &a->flags) &&
|
|
!test_bit(AF_POWER_MGT, &a->flags))
|
|
esas2r_disable_chip_interrupts(a);
|
|
|
|
/* Reinitialize the chip. */
|
|
esas2r_check_adapter(a);
|
|
esas2r_init_adapter_hw(a, 0);
|
|
|
|
if (test_bit(AF_CHPRST_NEEDED, &a->flags))
|
|
break;
|
|
|
|
if (test_bit(AF_POWER_MGT, &a->flags)) {
|
|
/* Recovery from power management. */
|
|
if (test_bit(AF_FIRST_INIT, &a->flags)) {
|
|
/* Chip reset during normal power up */
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"The firmware was reset during a normal power-up sequence");
|
|
} else {
|
|
/* Deferred power up complete. */
|
|
clear_bit(AF_POWER_MGT, &a->flags);
|
|
esas2r_send_reset_ae(a, true);
|
|
}
|
|
} else {
|
|
/* Recovery from online chip reset. */
|
|
if (test_bit(AF_FIRST_INIT, &a->flags)) {
|
|
/* Chip reset during driver load */
|
|
} else {
|
|
/* Chip reset after driver load */
|
|
esas2r_send_reset_ae(a, false);
|
|
}
|
|
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"Recovering from a chip reset while the chip was online");
|
|
}
|
|
|
|
clear_bit(AF_CHPRST_STARTED, &a->flags);
|
|
esas2r_enable_chip_interrupts(a);
|
|
|
|
/*
|
|
* Clear this flag last! this indicates that the chip has been
|
|
* reset already during initialization.
|
|
*/
|
|
clear_bit(AF_CHPRST_DETECTED, &a->flags);
|
|
}
|
|
}
|
|
|
|
|
|
/* Perform deferred tasks when chip interrupts are disabled */
|
|
void esas2r_do_tasklet_tasks(struct esas2r_adapter *a)
|
|
{
|
|
|
|
if (test_bit(AF_CHPRST_NEEDED, &a->flags) ||
|
|
test_bit(AF_CHPRST_DETECTED, &a->flags)) {
|
|
if (test_bit(AF_CHPRST_NEEDED, &a->flags))
|
|
esas2r_chip_rst_needed_during_tasklet(a);
|
|
|
|
esas2r_handle_chip_rst_during_tasklet(a);
|
|
}
|
|
|
|
if (test_bit(AF_BUSRST_NEEDED, &a->flags)) {
|
|
esas2r_hdebug("hard resetting bus");
|
|
|
|
clear_bit(AF_BUSRST_NEEDED, &a->flags);
|
|
|
|
if (test_bit(AF_FLASHING, &a->flags))
|
|
set_bit(AF_BUSRST_DETECTED, &a->flags);
|
|
else
|
|
esas2r_write_register_dword(a, MU_DOORBELL_IN,
|
|
DRBL_RESET_BUS);
|
|
}
|
|
|
|
if (test_bit(AF_BUSRST_DETECTED, &a->flags)) {
|
|
esas2r_process_bus_reset(a);
|
|
|
|
esas2r_log_dev(ESAS2R_LOG_WARN,
|
|
&(a->host->shost_gendev),
|
|
"scsi_report_bus_reset() called");
|
|
|
|
scsi_report_bus_reset(a->host, 0);
|
|
|
|
clear_bit(AF_BUSRST_DETECTED, &a->flags);
|
|
clear_bit(AF_BUSRST_PENDING, &a->flags);
|
|
|
|
esas2r_log(ESAS2R_LOG_WARN, "Bus reset complete");
|
|
}
|
|
|
|
if (test_bit(AF_PORT_CHANGE, &a->flags)) {
|
|
clear_bit(AF_PORT_CHANGE, &a->flags);
|
|
|
|
esas2r_targ_db_report_changes(a);
|
|
}
|
|
|
|
if (atomic_read(&a->disable_cnt) == 0)
|
|
esas2r_do_deferred_processes(a);
|
|
}
|
|
|
|
static void esas2r_doorbell_interrupt(struct esas2r_adapter *a, u32 doorbell)
|
|
{
|
|
if (!(doorbell & DRBL_FORCE_INT)) {
|
|
esas2r_trace_enter();
|
|
esas2r_trace("doorbell: %x", doorbell);
|
|
}
|
|
|
|
/* First clear the doorbell bits */
|
|
esas2r_write_register_dword(a, MU_DOORBELL_OUT, doorbell);
|
|
|
|
if (doorbell & DRBL_RESET_BUS)
|
|
set_bit(AF_BUSRST_DETECTED, &a->flags);
|
|
|
|
if (doorbell & DRBL_FORCE_INT)
|
|
clear_bit(AF_HEARTBEAT, &a->flags);
|
|
|
|
if (doorbell & DRBL_PANIC_REASON_MASK) {
|
|
esas2r_hdebug("*** Firmware Panic ***");
|
|
esas2r_log(ESAS2R_LOG_CRIT, "The firmware has panicked");
|
|
}
|
|
|
|
if (doorbell & DRBL_FW_RESET) {
|
|
set_bit(AF2_COREDUMP_AVAIL, &a->flags2);
|
|
esas2r_local_reset_adapter(a);
|
|
}
|
|
|
|
if (!(doorbell & DRBL_FORCE_INT)) {
|
|
esas2r_trace_exit();
|
|
}
|
|
}
|
|
|
|
void esas2r_force_interrupt(struct esas2r_adapter *a)
|
|
{
|
|
esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_FORCE_INT |
|
|
DRBL_DRV_VER);
|
|
}
|
|
|
|
|
|
static void esas2r_lun_event(struct esas2r_adapter *a, union atto_vda_ae *ae,
|
|
u16 target, u32 length)
|
|
{
|
|
struct esas2r_target *t = a->targetdb + target;
|
|
u32 cplen = length;
|
|
unsigned long flags;
|
|
|
|
if (cplen > sizeof(t->lu_event))
|
|
cplen = sizeof(t->lu_event);
|
|
|
|
esas2r_trace("ae->lu.dwevent: %x", ae->lu.dwevent);
|
|
esas2r_trace("ae->lu.bystate: %x", ae->lu.bystate);
|
|
|
|
spin_lock_irqsave(&a->mem_lock, flags);
|
|
|
|
t->new_target_state = TS_INVALID;
|
|
|
|
if (ae->lu.dwevent & VDAAE_LU_LOST) {
|
|
t->new_target_state = TS_NOT_PRESENT;
|
|
} else {
|
|
switch (ae->lu.bystate) {
|
|
case VDAAE_LU_NOT_PRESENT:
|
|
case VDAAE_LU_OFFLINE:
|
|
case VDAAE_LU_DELETED:
|
|
case VDAAE_LU_FACTORY_DISABLED:
|
|
t->new_target_state = TS_NOT_PRESENT;
|
|
break;
|
|
|
|
case VDAAE_LU_ONLINE:
|
|
case VDAAE_LU_DEGRADED:
|
|
t->new_target_state = TS_PRESENT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (t->new_target_state != TS_INVALID) {
|
|
memcpy(&t->lu_event, &ae->lu, cplen);
|
|
|
|
esas2r_disc_queue_event(a, DCDE_DEV_CHANGE);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&a->mem_lock, flags);
|
|
}
|
|
|
|
|
|
|
|
void esas2r_ae_complete(struct esas2r_adapter *a, struct esas2r_request *rq)
|
|
{
|
|
union atto_vda_ae *ae =
|
|
(union atto_vda_ae *)rq->vda_rsp_data->ae_data.event_data;
|
|
u32 length = le32_to_cpu(rq->func_rsp.ae_rsp.length);
|
|
union atto_vda_ae *last =
|
|
(union atto_vda_ae *)(rq->vda_rsp_data->ae_data.event_data
|
|
+ length);
|
|
|
|
esas2r_trace_enter();
|
|
esas2r_trace("length: %d", length);
|
|
|
|
if (length > sizeof(struct atto_vda_ae_data)
|
|
|| (length & 3) != 0
|
|
|| length == 0) {
|
|
esas2r_log(ESAS2R_LOG_WARN,
|
|
"The AE request response length (%p) is too long: %d",
|
|
rq, length);
|
|
|
|
esas2r_hdebug("aereq->length (0x%x) too long", length);
|
|
esas2r_bugon();
|
|
|
|
last = ae;
|
|
}
|
|
|
|
while (ae < last) {
|
|
u16 target;
|
|
|
|
esas2r_trace("ae: %p", ae);
|
|
esas2r_trace("ae->hdr: %p", &(ae->hdr));
|
|
|
|
length = ae->hdr.bylength;
|
|
|
|
if (length > (u32)((u8 *)last - (u8 *)ae)
|
|
|| (length & 3) != 0
|
|
|| length == 0) {
|
|
esas2r_log(ESAS2R_LOG_CRIT,
|
|
"the async event length is invalid (%p): %d",
|
|
ae, length);
|
|
|
|
esas2r_hdebug("ae->hdr.length (0x%x) invalid", length);
|
|
esas2r_bugon();
|
|
|
|
break;
|
|
}
|
|
|
|
esas2r_nuxi_ae_data(ae);
|
|
|
|
esas2r_queue_fw_event(a, fw_event_vda_ae, ae,
|
|
sizeof(union atto_vda_ae));
|
|
|
|
switch (ae->hdr.bytype) {
|
|
case VDAAE_HDR_TYPE_RAID:
|
|
|
|
if (ae->raid.dwflags & (VDAAE_GROUP_STATE
|
|
| VDAAE_RBLD_STATE
|
|
| VDAAE_MEMBER_CHG
|
|
| VDAAE_PART_CHG)) {
|
|
esas2r_log(ESAS2R_LOG_INFO,
|
|
"RAID event received - name:%s rebuild_state:%d group_state:%d",
|
|
ae->raid.acname,
|
|
ae->raid.byrebuild_state,
|
|
ae->raid.bygroup_state);
|
|
}
|
|
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_LU:
|
|
esas2r_log(ESAS2R_LOG_INFO,
|
|
"LUN event received: event:%d target_id:%d LUN:%d state:%d",
|
|
ae->lu.dwevent,
|
|
ae->lu.id.tgtlun.wtarget_id,
|
|
ae->lu.id.tgtlun.bylun,
|
|
ae->lu.bystate);
|
|
|
|
target = ae->lu.id.tgtlun.wtarget_id;
|
|
|
|
if (target < ESAS2R_MAX_TARGETS)
|
|
esas2r_lun_event(a, ae, target, length);
|
|
|
|
break;
|
|
|
|
case VDAAE_HDR_TYPE_DISK:
|
|
esas2r_log(ESAS2R_LOG_INFO, "Disk event received");
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Silently ignore the rest and let the apps deal with
|
|
* them.
|
|
*/
|
|
|
|
break;
|
|
}
|
|
|
|
ae = (union atto_vda_ae *)((u8 *)ae + length);
|
|
}
|
|
|
|
/* Now requeue it. */
|
|
esas2r_start_ae_request(a, rq);
|
|
esas2r_trace_exit();
|
|
}
|
|
|
|
/* Send an asynchronous event for a chip reset or power management. */
|
|
void esas2r_send_reset_ae(struct esas2r_adapter *a, bool pwr_mgt)
|
|
{
|
|
struct atto_vda_ae_hdr ae;
|
|
|
|
if (pwr_mgt)
|
|
ae.bytype = VDAAE_HDR_TYPE_PWRMGT;
|
|
else
|
|
ae.bytype = VDAAE_HDR_TYPE_RESET;
|
|
|
|
ae.byversion = VDAAE_HDR_VER_0;
|
|
ae.byflags = 0;
|
|
ae.bylength = (u8)sizeof(struct atto_vda_ae_hdr);
|
|
|
|
if (pwr_mgt) {
|
|
esas2r_hdebug("*** sending power management AE ***");
|
|
} else {
|
|
esas2r_hdebug("*** sending reset AE ***");
|
|
}
|
|
|
|
esas2r_queue_fw_event(a, fw_event_vda_ae, &ae,
|
|
sizeof(union atto_vda_ae));
|
|
}
|
|
|
|
void esas2r_dummy_complete(struct esas2r_adapter *a, struct esas2r_request *rq)
|
|
{}
|
|
|
|
static void esas2r_check_req_rsp_sense(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq)
|
|
{
|
|
u8 snslen, snslen2;
|
|
|
|
snslen = snslen2 = rq->func_rsp.scsi_rsp.sense_len;
|
|
|
|
if (snslen > rq->sense_len)
|
|
snslen = rq->sense_len;
|
|
|
|
if (snslen) {
|
|
if (rq->sense_buf)
|
|
memcpy(rq->sense_buf, rq->data_buf, snslen);
|
|
else
|
|
rq->sense_buf = (u8 *)rq->data_buf;
|
|
|
|
/* See about possible sense data */
|
|
if (snslen2 > 0x0c) {
|
|
u8 *s = (u8 *)rq->data_buf;
|
|
|
|
esas2r_trace_enter();
|
|
|
|
/* Report LUNS data has changed */
|
|
if (s[0x0c] == 0x3f && s[0x0d] == 0x0E) {
|
|
esas2r_trace("rq->target_id: %d",
|
|
rq->target_id);
|
|
esas2r_target_state_changed(a, rq->target_id,
|
|
TS_LUN_CHANGE);
|
|
}
|
|
|
|
esas2r_trace("add_sense_key=%x", s[0x0c]);
|
|
esas2r_trace("add_sense_qual=%x", s[0x0d]);
|
|
esas2r_trace_exit();
|
|
}
|
|
}
|
|
|
|
rq->sense_len = snslen;
|
|
}
|
|
|
|
|
|
void esas2r_complete_request(struct esas2r_adapter *a,
|
|
struct esas2r_request *rq)
|
|
{
|
|
if (rq->vrq->scsi.function == VDA_FUNC_FLASH
|
|
&& rq->vrq->flash.sub_func == VDA_FLASH_COMMIT)
|
|
clear_bit(AF_FLASHING, &a->flags);
|
|
|
|
/* See if we setup a callback to do special processing */
|
|
|
|
if (rq->interrupt_cb) {
|
|
(*rq->interrupt_cb)(a, rq);
|
|
|
|
if (rq->req_stat == RS_PENDING) {
|
|
esas2r_start_request(a, rq);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (likely(rq->vrq->scsi.function == VDA_FUNC_SCSI)
|
|
&& unlikely(rq->req_stat != RS_SUCCESS)) {
|
|
esas2r_check_req_rsp_sense(a, rq);
|
|
esas2r_log_request_failure(a, rq);
|
|
}
|
|
|
|
(*rq->comp_cb)(a, rq);
|
|
}
|