![Raghava Aditya Renukunta](/assets/img/avatar_default.png)
Ideally driver needs to wait for IO to be submitted or responded to before shutdown. Move code to wait for IO completion into shutdown path Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
671 lines
20 KiB
C
671 lines
20 KiB
C
/*
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* Adaptec AAC series RAID controller driver
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* (c) Copyright 2001 Red Hat Inc.
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*
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* based on the old aacraid driver that is..
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* Adaptec aacraid device driver for Linux.
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*
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* Copyright (c) 2000-2010 Adaptec, Inc.
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* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
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* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
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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; either version 2, or (at your option)
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* any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Module Name:
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* comminit.c
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*
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* Abstract: This supports the initialization of the host adapter commuication interface.
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* This is a platform dependent module for the pci cyclone board.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/completion.h>
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#include <linux/mm.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_cmnd.h>
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#include "aacraid.h"
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struct aac_common aac_config = {
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.irq_mod = 1
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};
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static inline int aac_is_msix_mode(struct aac_dev *dev)
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{
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u32 status = 0;
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if (aac_is_src(dev))
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status = src_readl(dev, MUnit.OMR);
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return (status & AAC_INT_MODE_MSIX);
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}
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static inline void aac_change_to_intx(struct aac_dev *dev)
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{
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aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
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aac_src_access_devreg(dev, AAC_ENABLE_INTX);
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}
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static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
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{
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unsigned char *base;
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unsigned long size, align;
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const unsigned long fibsize = dev->max_fib_size;
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const unsigned long printfbufsiz = 256;
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unsigned long host_rrq_size, aac_init_size;
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union aac_init *init;
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dma_addr_t phys;
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unsigned long aac_max_hostphysmempages;
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if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
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(dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
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(dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
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!dev->sa_firmware)) {
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host_rrq_size =
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(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
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* sizeof(u32);
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aac_init_size = sizeof(union aac_init);
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} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
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dev->sa_firmware) {
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host_rrq_size = (dev->scsi_host_ptr->can_queue
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+ AAC_NUM_MGT_FIB) * sizeof(u32) * AAC_MAX_MSIX;
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aac_init_size = sizeof(union aac_init) +
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(AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
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} else {
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host_rrq_size = 0;
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aac_init_size = sizeof(union aac_init);
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}
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size = fibsize + aac_init_size + commsize + commalign +
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printfbufsiz + host_rrq_size;
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base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
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if (base == NULL) {
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printk(KERN_ERR "aacraid: unable to create mapping.\n");
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return 0;
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}
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dev->comm_addr = (void *)base;
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dev->comm_phys = phys;
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dev->comm_size = size;
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if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
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(dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
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(dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
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dev->host_rrq = (u32 *)(base + fibsize);
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dev->host_rrq_pa = phys + fibsize;
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memset(dev->host_rrq, 0, host_rrq_size);
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}
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dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
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dev->init_pa = phys + fibsize + host_rrq_size;
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init = dev->init;
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if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
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int i;
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u64 addr;
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init->r8.init_struct_revision =
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cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
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init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
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INITFLAGS_DRIVER_USES_UTC_TIME |
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INITFLAGS_DRIVER_SUPPORTS_PM);
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init->r8.init_flags |=
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cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
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init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
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init->r8.max_io_size =
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cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
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init->r8.max_num_aif = init->r8.reserved1 =
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init->r8.reserved2 = 0;
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for (i = 0; i < dev->max_msix; i++) {
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addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
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sizeof(u32);
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init->r8.rrq[i].host_addr_high = cpu_to_le32(
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upper_32_bits(addr));
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init->r8.rrq[i].host_addr_low = cpu_to_le32(
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lower_32_bits(addr));
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init->r8.rrq[i].msix_id = i;
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init->r8.rrq[i].element_count = cpu_to_le16(
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(u16)dev->vector_cap);
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init->r8.rrq[i].comp_thresh =
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init->r8.rrq[i].unused = 0;
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}
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pr_warn("aacraid: Comm Interface type3 enabled\n");
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} else {
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init->r7.init_struct_revision =
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cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
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if (dev->max_fib_size != sizeof(struct hw_fib))
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init->r7.init_struct_revision =
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cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
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init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
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init->r7.fsrev = cpu_to_le32(dev->fsrev);
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/*
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* Adapter Fibs are the first thing allocated so that they
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* start page aligned
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*/
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dev->aif_base_va = (struct hw_fib *)base;
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init->r7.adapter_fibs_virtual_address = 0;
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init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
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init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
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init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
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/*
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* number of 4k pages of host physical memory. The aacraid fw
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* needs this number to be less than 4gb worth of pages. New
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* firmware doesn't have any issues with the mapping system, but
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* older Firmware did, and had *troubles* dealing with the math
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* overloading past 32 bits, thus we must limit this field.
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*/
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aac_max_hostphysmempages =
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dma_get_required_mask(&dev->pdev->dev) >> 12;
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if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
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init->r7.host_phys_mem_pages =
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cpu_to_le32(aac_max_hostphysmempages);
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else
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init->r7.host_phys_mem_pages =
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cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
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init->r7.init_flags =
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cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
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INITFLAGS_DRIVER_SUPPORTS_PM);
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init->r7.max_io_commands =
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cpu_to_le32(dev->scsi_host_ptr->can_queue +
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AAC_NUM_MGT_FIB);
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init->r7.max_io_size =
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cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
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init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
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init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
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if (dev->comm_interface == AAC_COMM_MESSAGE) {
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init->r7.init_flags |=
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cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
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pr_warn("aacraid: Comm Interface enabled\n");
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} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
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init->r7.init_struct_revision =
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cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
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init->r7.init_flags |=
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cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
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INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
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INITFLAGS_FAST_JBOD_SUPPORTED);
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init->r7.host_rrq_addr_high =
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cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
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init->r7.host_rrq_addr_low =
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cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
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pr_warn("aacraid: Comm Interface type1 enabled\n");
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} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
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init->r7.init_struct_revision =
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cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
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init->r7.init_flags |=
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cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
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INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
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INITFLAGS_FAST_JBOD_SUPPORTED);
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init->r7.host_rrq_addr_high =
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cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
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init->r7.host_rrq_addr_low =
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cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
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init->r7.no_of_msix_vectors =
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cpu_to_le32(dev->max_msix);
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/* must be the COMM_PREFERRED_SETTINGS values */
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pr_warn("aacraid: Comm Interface type2 enabled\n");
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}
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}
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/*
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* Increment the base address by the amount already used
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*/
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base = base + fibsize + host_rrq_size + aac_init_size;
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phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
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aac_init_size);
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/*
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* Align the beginning of Headers to commalign
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*/
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align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
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base = base + align;
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phys = phys + align;
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/*
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* Fill in addresses of the Comm Area Headers and Queues
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*/
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*commaddr = base;
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if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
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init->r7.comm_header_address = cpu_to_le32((u32)phys);
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/*
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* Increment the base address by the size of the CommArea
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*/
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base = base + commsize;
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phys = phys + commsize;
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/*
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* Place the Printf buffer area after the Fast I/O comm area.
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*/
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dev->printfbuf = (void *)base;
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if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
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init->r7.printfbuf = cpu_to_le32(phys);
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init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
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}
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memset(base, 0, printfbufsiz);
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return 1;
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}
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static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
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{
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atomic_set(&q->numpending, 0);
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q->dev = dev;
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init_waitqueue_head(&q->cmdready);
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INIT_LIST_HEAD(&q->cmdq);
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init_waitqueue_head(&q->qfull);
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spin_lock_init(&q->lockdata);
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q->lock = &q->lockdata;
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q->headers.producer = (__le32 *)mem;
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q->headers.consumer = (__le32 *)(mem+1);
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*(q->headers.producer) = cpu_to_le32(qsize);
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*(q->headers.consumer) = cpu_to_le32(qsize);
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q->entries = qsize;
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}
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static void aac_wait_for_io_completion(struct aac_dev *aac)
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{
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unsigned long flagv = 0;
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int i = 0;
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for (i = 60; i; --i) {
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struct scsi_device *dev;
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struct scsi_cmnd *command;
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int active = 0;
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__shost_for_each_device(dev, aac->scsi_host_ptr) {
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spin_lock_irqsave(&dev->list_lock, flagv);
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list_for_each_entry(command, &dev->cmd_list, list) {
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if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
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active++;
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break;
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}
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}
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spin_unlock_irqrestore(&dev->list_lock, flagv);
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if (active)
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break;
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}
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/*
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* We can exit If all the commands are complete
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*/
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if (active == 0)
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break;
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ssleep(1);
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}
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}
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/**
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* aac_send_shutdown - shutdown an adapter
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* @dev: Adapter to shutdown
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*
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* This routine will send a VM_CloseAll (shutdown) request to the adapter.
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*/
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int aac_send_shutdown(struct aac_dev * dev)
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{
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struct fib * fibctx;
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struct aac_close *cmd;
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int status = 0;
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if (aac_adapter_check_health(dev))
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return status;
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if (!dev->adapter_shutdown) {
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mutex_lock(&dev->ioctl_mutex);
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dev->adapter_shutdown = 1;
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mutex_unlock(&dev->ioctl_mutex);
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}
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aac_wait_for_io_completion(dev);
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fibctx = aac_fib_alloc(dev);
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if (!fibctx)
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return -ENOMEM;
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aac_fib_init(fibctx);
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cmd = (struct aac_close *) fib_data(fibctx);
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cmd->command = cpu_to_le32(VM_CloseAll);
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cmd->cid = cpu_to_le32(0xfffffffe);
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status = aac_fib_send(ContainerCommand,
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fibctx,
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sizeof(struct aac_close),
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FsaNormal,
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-2 /* Timeout silently */, 1,
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NULL, NULL);
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if (status >= 0)
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aac_fib_complete(fibctx);
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/* FIB should be freed only after getting the response from the F/W */
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if (status != -ERESTARTSYS)
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aac_fib_free(fibctx);
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if (aac_is_src(dev) &&
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dev->msi_enabled)
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aac_set_intx_mode(dev);
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return status;
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}
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/**
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* aac_comm_init - Initialise FSA data structures
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* @dev: Adapter to initialise
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*
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* Initializes the data structures that are required for the FSA commuication
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* interface to operate.
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* Returns
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* 1 - if we were able to init the commuication interface.
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* 0 - If there were errors initing. This is a fatal error.
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*/
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static int aac_comm_init(struct aac_dev * dev)
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{
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unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
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unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
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u32 *headers;
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struct aac_entry * queues;
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unsigned long size;
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struct aac_queue_block * comm = dev->queues;
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/*
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* Now allocate and initialize the zone structures used as our
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* pool of FIB context records. The size of the zone is based
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* on the system memory size. We also initialize the mutex used
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* to protect the zone.
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*/
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spin_lock_init(&dev->fib_lock);
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/*
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* Allocate the physically contiguous space for the commuication
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* queue headers.
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*/
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size = hdrsize + queuesize;
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if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
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return -ENOMEM;
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queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
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/* Adapter to Host normal priority Command queue */
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comm->queue[HostNormCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
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queues += HOST_NORM_CMD_ENTRIES;
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headers += 2;
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/* Adapter to Host high priority command queue */
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comm->queue[HostHighCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
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queues += HOST_HIGH_CMD_ENTRIES;
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headers +=2;
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/* Host to adapter normal priority command queue */
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comm->queue[AdapNormCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
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queues += ADAP_NORM_CMD_ENTRIES;
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headers += 2;
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/* host to adapter high priority command queue */
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comm->queue[AdapHighCmdQueue].base = queues;
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aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
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queues += ADAP_HIGH_CMD_ENTRIES;
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headers += 2;
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/* adapter to host normal priority response queue */
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comm->queue[HostNormRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
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queues += HOST_NORM_RESP_ENTRIES;
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headers += 2;
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/* adapter to host high priority response queue */
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comm->queue[HostHighRespQueue].base = queues;
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aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
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queues += HOST_HIGH_RESP_ENTRIES;
|
|
headers += 2;
|
|
|
|
/* host to adapter normal priority response queue */
|
|
comm->queue[AdapNormRespQueue].base = queues;
|
|
aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
|
|
|
|
queues += ADAP_NORM_RESP_ENTRIES;
|
|
headers += 2;
|
|
|
|
/* host to adapter high priority response queue */
|
|
comm->queue[AdapHighRespQueue].base = queues;
|
|
aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
|
|
|
|
comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
|
|
comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
|
|
comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
|
|
comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void aac_define_int_mode(struct aac_dev *dev)
|
|
{
|
|
int i, msi_count, min_msix;
|
|
|
|
msi_count = i = 0;
|
|
/* max. vectors from GET_COMM_PREFERRED_SETTINGS */
|
|
if (dev->max_msix == 0 ||
|
|
dev->pdev->device == PMC_DEVICE_S6 ||
|
|
dev->sync_mode) {
|
|
dev->max_msix = 1;
|
|
dev->vector_cap =
|
|
dev->scsi_host_ptr->can_queue +
|
|
AAC_NUM_MGT_FIB;
|
|
return;
|
|
}
|
|
|
|
/* Don't bother allocating more MSI-X vectors than cpus */
|
|
msi_count = min(dev->max_msix,
|
|
(unsigned int)num_online_cpus());
|
|
|
|
dev->max_msix = msi_count;
|
|
|
|
if (msi_count > AAC_MAX_MSIX)
|
|
msi_count = AAC_MAX_MSIX;
|
|
|
|
if (msi_count > 1 &&
|
|
pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
|
|
min_msix = 2;
|
|
i = pci_alloc_irq_vectors(dev->pdev,
|
|
min_msix, msi_count,
|
|
PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
|
|
if (i > 0) {
|
|
dev->msi_enabled = 1;
|
|
msi_count = i;
|
|
} else {
|
|
dev->msi_enabled = 0;
|
|
dev_err(&dev->pdev->dev,
|
|
"MSIX not supported!! Will try INTX 0x%x.\n", i);
|
|
}
|
|
}
|
|
|
|
if (!dev->msi_enabled)
|
|
dev->max_msix = msi_count = 1;
|
|
else {
|
|
if (dev->max_msix > msi_count)
|
|
dev->max_msix = msi_count;
|
|
}
|
|
if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
|
|
dev->vector_cap = dev->scsi_host_ptr->can_queue +
|
|
AAC_NUM_MGT_FIB;
|
|
else
|
|
dev->vector_cap = (dev->scsi_host_ptr->can_queue +
|
|
AAC_NUM_MGT_FIB) / msi_count;
|
|
|
|
}
|
|
struct aac_dev *aac_init_adapter(struct aac_dev *dev)
|
|
{
|
|
u32 status[5];
|
|
struct Scsi_Host * host = dev->scsi_host_ptr;
|
|
extern int aac_sync_mode;
|
|
|
|
/*
|
|
* Check the preferred comm settings, defaults from template.
|
|
*/
|
|
dev->management_fib_count = 0;
|
|
spin_lock_init(&dev->manage_lock);
|
|
spin_lock_init(&dev->sync_lock);
|
|
spin_lock_init(&dev->iq_lock);
|
|
dev->max_fib_size = sizeof(struct hw_fib);
|
|
dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
|
|
- sizeof(struct aac_fibhdr)
|
|
- sizeof(struct aac_write) + sizeof(struct sgentry))
|
|
/ sizeof(struct sgentry);
|
|
dev->comm_interface = AAC_COMM_PRODUCER;
|
|
dev->raw_io_interface = dev->raw_io_64 = 0;
|
|
|
|
|
|
/*
|
|
* Enable INTX mode, if not done already Enabled
|
|
*/
|
|
if (aac_is_msix_mode(dev)) {
|
|
aac_change_to_intx(dev);
|
|
dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
|
|
}
|
|
|
|
if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
|
|
0, 0, 0, 0, 0, 0,
|
|
status+0, status+1, status+2, status+3, status+4)) &&
|
|
(status[0] == 0x00000001)) {
|
|
dev->doorbell_mask = status[3];
|
|
if (status[1] & AAC_OPT_NEW_COMM_64)
|
|
dev->raw_io_64 = 1;
|
|
dev->sync_mode = aac_sync_mode;
|
|
if (dev->a_ops.adapter_comm &&
|
|
(status[1] & AAC_OPT_NEW_COMM)) {
|
|
dev->comm_interface = AAC_COMM_MESSAGE;
|
|
dev->raw_io_interface = 1;
|
|
if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
|
|
/* driver supports TYPE1 (Tupelo) */
|
|
dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
|
|
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
|
|
/* driver supports TYPE2 (Denali, Yosemite) */
|
|
dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
|
|
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
|
|
/* driver supports TYPE3 (Yosemite, Thor) */
|
|
dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
|
|
} else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
|
|
/* not supported TYPE - switch to sync. mode */
|
|
dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
|
|
dev->sync_mode = 1;
|
|
}
|
|
}
|
|
if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
|
|
(status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
|
|
dev->sa_firmware = 1;
|
|
else
|
|
dev->sa_firmware = 0;
|
|
|
|
if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
|
|
(status[2] > dev->base_size)) {
|
|
aac_adapter_ioremap(dev, 0);
|
|
dev->base_size = status[2];
|
|
if (aac_adapter_ioremap(dev, status[2])) {
|
|
/* remap failed, go back ... */
|
|
dev->comm_interface = AAC_COMM_PRODUCER;
|
|
if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
|
|
printk(KERN_WARNING
|
|
"aacraid: unable to map adapter.\n");
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
dev->max_msix = 0;
|
|
dev->msi_enabled = 0;
|
|
dev->adapter_shutdown = 0;
|
|
if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
|
|
0, 0, 0, 0, 0, 0,
|
|
status+0, status+1, status+2, status+3, status+4))
|
|
&& (status[0] == 0x00000001)) {
|
|
/*
|
|
* status[1] >> 16 maximum command size in KB
|
|
* status[1] & 0xFFFF maximum FIB size
|
|
* status[2] >> 16 maximum SG elements to driver
|
|
* status[2] & 0xFFFF maximum SG elements from driver
|
|
* status[3] & 0xFFFF maximum number FIBs outstanding
|
|
*/
|
|
host->max_sectors = (status[1] >> 16) << 1;
|
|
/* Multiple of 32 for PMC */
|
|
dev->max_fib_size = status[1] & 0xFFE0;
|
|
host->sg_tablesize = status[2] >> 16;
|
|
dev->sg_tablesize = status[2] & 0xFFFF;
|
|
if (aac_is_src(dev)) {
|
|
if (host->can_queue > (status[3] >> 16) -
|
|
AAC_NUM_MGT_FIB)
|
|
host->can_queue = (status[3] >> 16) -
|
|
AAC_NUM_MGT_FIB;
|
|
} else if (host->can_queue > (status[3] & 0xFFFF) -
|
|
AAC_NUM_MGT_FIB)
|
|
host->can_queue = (status[3] & 0xFFFF) -
|
|
AAC_NUM_MGT_FIB;
|
|
|
|
dev->max_num_aif = status[4] & 0xFFFF;
|
|
}
|
|
if (numacb > 0) {
|
|
if (numacb < host->can_queue)
|
|
host->can_queue = numacb;
|
|
else
|
|
pr_warn("numacb=%d ignored\n", numacb);
|
|
}
|
|
|
|
if (aac_is_src(dev))
|
|
aac_define_int_mode(dev);
|
|
/*
|
|
* Ok now init the communication subsystem
|
|
*/
|
|
|
|
dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
|
|
if (dev->queues == NULL) {
|
|
printk(KERN_ERR "Error could not allocate comm region.\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (aac_comm_init(dev)<0){
|
|
kfree(dev->queues);
|
|
return NULL;
|
|
}
|
|
/*
|
|
* Initialize the list of fibs
|
|
*/
|
|
if (aac_fib_setup(dev) < 0) {
|
|
kfree(dev->queues);
|
|
return NULL;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&dev->fib_list);
|
|
INIT_LIST_HEAD(&dev->sync_fib_list);
|
|
|
|
return dev;
|
|
}
|
|
|