/*
* linux / drivers / scsi / esas2r / esas2r_init . c
* For use with ATTO ExpressSAS R6xx SAS / SATA RAID controllers
*
* Copyright ( c ) 2001 - 2013 ATTO Technology , Inc .
* ( mailto : linuxdrivers @ attotech . com ) mpt3sas / mpt3sas_trigger_diag .
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN " AS IS " BASIS , WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND , EITHER EXPRESS OR IMPLIED INCLUDING , WITHOUT
* LIMITATION , ANY WARRANTIES OR CONDITIONS OF TITLE , NON - INFRINGEMENT ,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE . Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement , including but not limited to
* the risks and costs of program errors , damage to or loss of data ,
* programs or equipment , and unavailability or interruption of operations .
*
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT , INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING WITHOUT LIMITATION LOST PROFITS ) , HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR
* TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Fifth Floor , Boston , MA 02110 - 1301 ,
* USA .
*/
#include "esas2r.h"
static bool esas2r_initmem_alloc(struct esas2r_adapter *a,
struct esas2r_mem_desc *mem_desc,
u32 align)
{
mem_desc->esas2r_param = mem_desc->size + align;
mem_desc->virt_addr = NULL;
mem_desc->phys_addr = 0 ;
mem_desc->esas2r_data = dma_alloc_coherent(&a->pcid->dev,
(size_t)mem_desc->
esas2r_param,
(dma_addr_t *)&mem_desc->
phys_addr,
GFP_KERNEL);
if (mem_desc->esas2r_data == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate %lu bytes of consistent memory!" ,
(long
unsigned
int )mem_desc->esas2r_param);
return false ;
}
mem_desc->virt_addr = PTR_ALIGN(mem_desc->esas2r_data, align);
mem_desc->phys_addr = ALIGN(mem_desc->phys_addr, align);
memset(mem_desc->virt_addr, 0 , mem_desc->size);
return true ;
}
static void esas2r_initmem_free(struct esas2r_adapter *a,
struct esas2r_mem_desc *mem_desc)
{
if (mem_desc->virt_addr == NULL)
return ;
/*
* Careful ! phys_addr and virt_addr may have been adjusted from the
* original allocation in order to return the desired alignment . That
* means we have to use the original address ( in esas2r_data ) and size
* ( esas2r_param ) and calculate the original physical address based on
* the difference between the requested and actual allocation size .
*/
if (mem_desc->phys_addr) {
int unalign = ((u8 *)mem_desc->virt_addr) -
((u8 *)mem_desc->esas2r_data);
dma_free_coherent(&a->pcid->dev,
(size_t)mem_desc->esas2r_param,
mem_desc->esas2r_data,
(dma_addr_t)(mem_desc->phys_addr - unalign));
} else {
kfree(mem_desc->esas2r_data);
}
mem_desc->virt_addr = NULL;
}
static bool alloc_vda_req(struct esas2r_adapter *a,
struct esas2r_request *rq)
{
struct esas2r_mem_desc *memdesc = kzalloc(
sizeof (struct esas2r_mem_desc), GFP_KERNEL);
if (memdesc == NULL) {
esas2r_hdebug("could not alloc mem for vda request memdesc\n" );
return false ;
}
memdesc->size = sizeof (union atto_vda_req) +
ESAS2R_DATA_BUF_LEN;
if (!esas2r_initmem_alloc(a, memdesc, 256 )) {
esas2r_hdebug("could not alloc mem for vda request\n" );
kfree(memdesc);
return false ;
}
a->num_vrqs++;
list_add(&memdesc->next_desc, &a->vrq_mds_head);
rq->vrq_md = memdesc;
rq->vrq = (union atto_vda_req *)memdesc->virt_addr;
rq->vrq->scsi.handle = a->num_vrqs;
return true ;
}
static void esas2r_unmap_regions(struct esas2r_adapter *a)
{
if (a->regs)
iounmap((void __iomem *)a->regs);
a->regs = NULL;
pci_release_region(a->pcid, 2 );
if (a->data_window)
iounmap((void __iomem *)a->data_window);
a->data_window = NULL;
pci_release_region(a->pcid, 0 );
}
static int esas2r_map_regions(struct esas2r_adapter *a)
{
int error;
a->regs = NULL;
a->data_window = NULL;
error = pci_request_region(a->pcid, 2 , a->name);
if (error != 0 ) {
esas2r_log(ESAS2R_LOG_CRIT,
"pci_request_region(2) failed, error %d" ,
error);
return error;
}
a->regs = (void __force *)ioremap(pci_resource_start(a->pcid, 2 ),
pci_resource_len(a->pcid, 2 ));
if (a->regs == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"ioremap failed for regs mem region\n" );
pci_release_region(a->pcid, 2 );
return -EFAULT;
}
error = pci_request_region(a->pcid, 0 , a->name);
if (error != 0 ) {
esas2r_log(ESAS2R_LOG_CRIT,
"pci_request_region(2) failed, error %d" ,
error);
esas2r_unmap_regions(a);
return error;
}
a->data_window = (void __force *)ioremap(pci_resource_start(a->pcid,
0 ),
pci_resource_len(a->pcid, 0 ));
if (a->data_window == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"ioremap failed for data_window mem region\n" );
esas2r_unmap_regions(a);
return -EFAULT;
}
return 0 ;
}
static void esas2r_setup_interrupts(struct esas2r_adapter *a, int intr_mode)
{
int i;
/* Set up interrupt mode based on the requested value */
switch (intr_mode) {
case INTR_MODE_LEGACY:
use_legacy_interrupts:
a->intr_mode = INTR_MODE_LEGACY;
break ;
case INTR_MODE_MSI:
i = pci_enable_msi(a->pcid);
if (i != 0 ) {
esas2r_log(ESAS2R_LOG_WARN,
"failed to enable MSI for adapter %d, "
"falling back to legacy interrupts "
"(err=%d)" , a->index,
i);
goto use_legacy_interrupts;
}
a->intr_mode = INTR_MODE_MSI;
set_bit(AF2_MSI_ENABLED, &a->flags2);
break ;
default :
esas2r_log(ESAS2R_LOG_WARN,
"unknown interrupt_mode %d requested, "
"falling back to legacy interrupt" ,
interrupt_mode);
goto use_legacy_interrupts;
}
}
static void esas2r_claim_interrupts(struct esas2r_adapter *a)
{
unsigned long flags = 0 ;
if (a->intr_mode == INTR_MODE_LEGACY)
flags |= IRQF_SHARED;
esas2r_log(ESAS2R_LOG_INFO,
"esas2r_claim_interrupts irq=%d (%p, %s, %lx)" ,
a->pcid->irq, a, a->name, flags);
if (request_irq(a->pcid->irq,
(a->intr_mode ==
INTR_MODE_LEGACY) ? esas2r_interrupt :
esas2r_msi_interrupt,
flags,
a->name,
a)) {
esas2r_log(ESAS2R_LOG_CRIT, "unable to request IRQ %02X" ,
a->pcid->irq);
return ;
}
set_bit(AF2_IRQ_CLAIMED, &a->flags2);
esas2r_log(ESAS2R_LOG_INFO,
"claimed IRQ %d flags: 0x%lx" ,
a->pcid->irq, flags);
}
int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid,
int index)
{
struct esas2r_adapter *a;
u64 bus_addr = 0 ;
int i;
void *next_uncached;
struct esas2r_request *first_request, *last_request;
bool dma64 = false ;
if (index >= MAX_ADAPTERS) {
esas2r_log(ESAS2R_LOG_CRIT,
"tried to init invalid adapter index %u!" ,
index);
return 0 ;
}
if (esas2r_adapters[index]) {
esas2r_log(ESAS2R_LOG_CRIT,
"tried to init existing adapter index %u!" ,
index);
return 0 ;
}
a = (struct esas2r_adapter *)host->hostdata;
memset(a, 0 , sizeof (struct esas2r_adapter));
a->pcid = pcid;
a->host = host;
if (sizeof (dma_addr_t) > 4 &&
dma_get_required_mask(&pcid->dev) > DMA_BIT_MASK(32 ) &&
!dma_set_mask_and_coherent(&pcid->dev, DMA_BIT_MASK(64 )))
dma64 = true ;
if (!dma64 && dma_set_mask_and_coherent(&pcid->dev, DMA_BIT_MASK(32 ))) {
esas2r_log(ESAS2R_LOG_CRIT, "failed to set DMA mask" );
esas2r_kill_adapter(index);
return 0 ;
}
esas2r_log_dev(ESAS2R_LOG_INFO, &pcid->dev,
"%s-bit PCI addressing enabled\n" , dma64 ? "64" : "32" );
esas2r_adapters[index] = a;
sprintf(a->name, ESAS2R_DRVR_NAME "_%02d" , index);
esas2r_debug("new adapter %p, name %s" , a, a->name);
spin_lock_init(&a->request_lock);
spin_lock_init(&a->fw_event_lock);
mutex_init(&a->fm_api_mutex);
mutex_init(&a->fs_api_mutex);
sema_init(&a->nvram_semaphore, 1 );
esas2r_fw_event_off(a);
a->fw_event_q =
alloc_ordered_workqueue("esas2r/%d" , WQ_MEM_RECLAIM, a->index);
init_waitqueue_head(&a->buffered_ioctl_waiter);
init_waitqueue_head(&a->nvram_waiter);
init_waitqueue_head(&a->fm_api_waiter);
init_waitqueue_head(&a->fs_api_waiter);
init_waitqueue_head(&a->vda_waiter);
INIT_LIST_HEAD(&a->general_req.req_list);
INIT_LIST_HEAD(&a->active_list);
INIT_LIST_HEAD(&a->defer_list);
INIT_LIST_HEAD(&a->free_sg_list_head);
INIT_LIST_HEAD(&a->avail_request);
INIT_LIST_HEAD(&a->vrq_mds_head);
INIT_LIST_HEAD(&a->fw_event_list);
first_request = (struct esas2r_request *)((u8 *)(a + 1 ));
for (last_request = first_request, i = 1 ; i < num_requests;
last_request++, i++) {
INIT_LIST_HEAD(&last_request->req_list);
list_add_tail(&last_request->comp_list, &a->avail_request);
if (!alloc_vda_req(a, last_request)) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate a VDA request!" );
esas2r_kill_adapter(index);
return 0 ;
}
}
esas2r_debug("requests: %p to %p (%d, %d)" , first_request,
last_request,
sizeof (*first_request),
num_requests);
if (esas2r_map_regions(a) != 0 ) {
esas2r_log(ESAS2R_LOG_CRIT, "could not map PCI regions!" );
esas2r_kill_adapter(index);
return 0 ;
}
a->index = index;
/* interrupts will be disabled until we are done with init */
atomic_inc(&a->dis_ints_cnt);
atomic_inc(&a->disable_cnt);
set_bit(AF_CHPRST_PENDING, &a->flags);
set_bit(AF_DISC_PENDING, &a->flags);
set_bit(AF_FIRST_INIT, &a->flags);
set_bit(AF_LEGACY_SGE_MODE, &a->flags);
a->init_msg = ESAS2R_INIT_MSG_START;
a->max_vdareq_size = 128 ;
a->build_sgl = esas2r_build_sg_list_sge;
esas2r_setup_interrupts(a, interrupt_mode);
a->uncached_size = esas2r_get_uncached_size(a);
a->uncached = dma_alloc_coherent(&pcid->dev,
(size_t)a->uncached_size,
(dma_addr_t *)&bus_addr,
GFP_KERNEL);
if (a->uncached == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate %d bytes of consistent memory!" ,
a->uncached_size);
esas2r_kill_adapter(index);
return 0 ;
}
a->uncached_phys = bus_addr;
esas2r_debug("%d bytes uncached memory allocated @ %p (%x:%x)" ,
a->uncached_size,
a->uncached,
upper_32_bits(bus_addr),
lower_32_bits(bus_addr));
memset(a->uncached, 0 , a->uncached_size);
next_uncached = a->uncached;
if (!esas2r_init_adapter_struct(a,
&next_uncached)) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to initialize adapter structure (2)!" );
esas2r_kill_adapter(index);
return 0 ;
}
tasklet_init(&a->tasklet,
esas2r_adapter_tasklet,
(unsigned long )a);
/*
* Disable chip interrupts to prevent spurious interrupts
* until we claim the IRQ .
*/
esas2r_disable_chip_interrupts(a);
esas2r_check_adapter(a);
if (!esas2r_init_adapter_hw(a, true )) {
esas2r_log(ESAS2R_LOG_CRIT, "failed to initialize hardware!" );
} else {
esas2r_debug("esas2r_init_adapter ok" );
}
esas2r_claim_interrupts(a);
if (test_bit(AF2_IRQ_CLAIMED, &a->flags2))
esas2r_enable_chip_interrupts(a);
set_bit(AF2_INIT_DONE, &a->flags2);
if (!test_bit(AF_DEGRADED_MODE, &a->flags))
esas2r_kickoff_timer(a);
esas2r_debug("esas2r_init_adapter done for %p (%d)" ,
a, a->disable_cnt);
return 1 ;
}
static void esas2r_adapter_power_down(struct esas2r_adapter *a,
int power_management)
{
struct esas2r_mem_desc *memdesc, *next;
if ((test_bit(AF2_INIT_DONE, &a->flags2))
&& (!test_bit(AF_DEGRADED_MODE, &a->flags))) {
if (!power_management) {
timer_delete_sync(&a->timer);
tasklet_kill(&a->tasklet);
}
esas2r_power_down(a);
/*
* There are versions of firmware that do not handle the sync
* cache command correctly . Stall here to ensure that the
* cache is lazily flushed .
*/
mdelay(500 );
esas2r_debug("chip halted" );
}
/* Remove sysfs binary files */
if (a->sysfs_fw_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fw);
a->sysfs_fw_created = 0 ;
}
if (a->sysfs_fs_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fs);
a->sysfs_fs_created = 0 ;
}
if (a->sysfs_vda_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_vda);
a->sysfs_vda_created = 0 ;
}
if (a->sysfs_hw_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_hw);
a->sysfs_hw_created = 0 ;
}
if (a->sysfs_live_nvram_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj,
&bin_attr_live_nvram);
a->sysfs_live_nvram_created = 0 ;
}
if (a->sysfs_default_nvram_created) {
sysfs_remove_bin_file(&a->host->shost_dev.kobj,
&bin_attr_default_nvram);
a->sysfs_default_nvram_created = 0 ;
}
/* Clean up interrupts */
if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) {
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->pcid->dev),
"free_irq(%d) called" , a->pcid->irq);
free_irq(a->pcid->irq, a);
esas2r_debug("IRQ released" );
clear_bit(AF2_IRQ_CLAIMED, &a->flags2);
}
if (test_bit(AF2_MSI_ENABLED, &a->flags2)) {
pci_disable_msi(a->pcid);
clear_bit(AF2_MSI_ENABLED, &a->flags2);
esas2r_debug("MSI disabled" );
}
if (a->inbound_list_md.virt_addr)
esas2r_initmem_free(a, &a->inbound_list_md);
if (a->outbound_list_md.virt_addr)
esas2r_initmem_free(a, &a->outbound_list_md);
list_for_each_entry_safe(memdesc, next, &a->free_sg_list_head,
next_desc) {
esas2r_initmem_free(a, memdesc);
}
/* Following frees everything allocated via alloc_vda_req */
list_for_each_entry_safe(memdesc, next, &a->vrq_mds_head, next_desc) {
esas2r_initmem_free(a, memdesc);
list_del(&memdesc->next_desc);
kfree(memdesc);
}
kfree(a->first_ae_req);
a->first_ae_req = NULL;
kfree(a->sg_list_mds);
a->sg_list_mds = NULL;
kfree(a->req_table);
a->req_table = NULL;
if (a->regs) {
esas2r_unmap_regions(a);
a->regs = NULL;
a->data_window = NULL;
esas2r_debug("regions unmapped" );
}
}
/* Release/free allocated resources for specified adapters. */
void esas2r_kill_adapter(int i)
{
struct esas2r_adapter *a = esas2r_adapters[i];
if (a) {
unsigned long flags;
struct workqueue_struct *wq;
esas2r_debug("killing adapter %p [%d] " , a, i);
esas2r_fw_event_off(a);
esas2r_adapter_power_down(a, 0 );
if (esas2r_buffered_ioctl &&
(a->pcid == esas2r_buffered_ioctl_pcid)) {
dma_free_coherent(&a->pcid->dev,
(size_t)esas2r_buffered_ioctl_size,
esas2r_buffered_ioctl,
esas2r_buffered_ioctl_addr);
esas2r_buffered_ioctl = NULL;
}
if (a->vda_buffer) {
dma_free_coherent(&a->pcid->dev,
(size_t)VDA_MAX_BUFFER_SIZE,
a->vda_buffer,
(dma_addr_t)a->ppvda_buffer);
a->vda_buffer = NULL;
}
if (a->fs_api_buffer) {
dma_free_coherent(&a->pcid->dev,
(size_t)a->fs_api_buffer_size,
a->fs_api_buffer,
(dma_addr_t)a->ppfs_api_buffer);
a->fs_api_buffer = NULL;
}
kfree(a->local_atto_ioctl);
a->local_atto_ioctl = NULL;
spin_lock_irqsave(&a->fw_event_lock, flags);
wq = a->fw_event_q;
a->fw_event_q = NULL;
spin_unlock_irqrestore(&a->fw_event_lock, flags);
if (wq)
destroy_workqueue(wq);
if (a->uncached) {
dma_free_coherent(&a->pcid->dev,
(size_t)a->uncached_size,
a->uncached,
(dma_addr_t)a->uncached_phys);
a->uncached = NULL;
esas2r_debug("uncached area freed" );
}
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->pcid->dev),
"pci_disable_device() called. msix_enabled: %d "
"msi_enabled: %d irq: %d pin: %d" ,
a->pcid->msix_enabled,
a->pcid->msi_enabled,
a->pcid->irq,
a->pcid->pin);
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->pcid->dev),
"before pci_disable_device() enable_cnt: %d" ,
a->pcid->enable_cnt.counter);
pci_disable_device(a->pcid);
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->pcid->dev),
"after pci_disable_device() enable_cnt: %d" ,
a->pcid->enable_cnt.counter);
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->pcid->dev),
"pci_set_drv_data(%p, NULL) called" ,
a->pcid);
pci_set_drvdata(a->pcid, NULL);
esas2r_adapters[i] = NULL;
if (test_bit(AF2_INIT_DONE, &a->flags2)) {
clear_bit(AF2_INIT_DONE, &a->flags2);
set_bit(AF_DEGRADED_MODE, &a->flags);
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->host->shost_gendev),
"scsi_remove_host() called" );
scsi_remove_host(a->host);
esas2r_log_dev(ESAS2R_LOG_INFO,
&(a->host->shost_gendev),
"scsi_host_put() called" );
scsi_host_put(a->host);
}
}
}
static int __maybe_unused esas2r_suspend(struct device *dev)
{
struct Scsi_Host *host = dev_get_drvdata(dev);
struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata;
esas2r_log_dev(ESAS2R_LOG_INFO, dev, "suspending adapter()" );
if (!a)
return -ENODEV;
esas2r_adapter_power_down(a, 1 );
esas2r_log_dev(ESAS2R_LOG_INFO, dev, "esas2r_suspend(): 0" );
return 0 ;
}
static int __maybe_unused esas2r_resume(struct device *dev)
{
struct Scsi_Host *host = dev_get_drvdata(dev);
struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata;
int rez = 0 ;
esas2r_log_dev(ESAS2R_LOG_INFO, dev, "resuming adapter()" );
if (!a) {
rez = -ENODEV;
goto error_exit;
}
if (esas2r_map_regions(a) != 0 ) {
esas2r_log(ESAS2R_LOG_CRIT, "could not re-map PCI regions!" );
rez = -ENOMEM;
goto error_exit;
}
/* Set up interupt mode */
esas2r_setup_interrupts(a, a->intr_mode);
/*
* Disable chip interrupts to prevent spurious interrupts until we
* claim the IRQ .
*/
esas2r_disable_chip_interrupts(a);
if (!esas2r_power_up(a, true )) {
esas2r_debug("yikes, esas2r_power_up failed" );
rez = -ENOMEM;
goto error_exit;
}
esas2r_claim_interrupts(a);
if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) {
/*
* Now that system interrupt ( s ) are claimed , we can enable
* chip interrupts .
*/
esas2r_enable_chip_interrupts(a);
esas2r_kickoff_timer(a);
} else {
esas2r_debug("yikes, unable to claim IRQ" );
esas2r_log(ESAS2R_LOG_CRIT, "could not re-claim IRQ!" );
rez = -ENOMEM;
goto error_exit;
}
error_exit:
esas2r_log_dev(ESAS2R_LOG_CRIT, dev, "esas2r_resume(): %d" ,
rez);
return rez;
}
SIMPLE_DEV_PM_OPS(esas2r_pm_ops, esas2r_suspend, esas2r_resume);
bool esas2r_set_degraded_mode(struct esas2r_adapter *a, char *error_str)
{
set_bit(AF_DEGRADED_MODE, &a->flags);
esas2r_log(ESAS2R_LOG_CRIT,
"setting adapter to degraded mode: %s\n" , error_str);
return false ;
}
u32 esas2r_get_uncached_size(struct esas2r_adapter *a)
{
return sizeof (struct esas2r_sas_nvram)
+ ALIGN(ESAS2R_DISC_BUF_LEN, 8 )
+ ALIGN(sizeof (u32), 8 ) /* outbound list copy pointer */
+ 8
+ (num_sg_lists * (u16)sgl_page_size)
+ ALIGN((num_requests + num_ae_requests + 1 +
ESAS2R_LIST_EXTRA) *
sizeof (struct esas2r_inbound_list_source_entry),
8 )
+ ALIGN((num_requests + num_ae_requests + 1 +
ESAS2R_LIST_EXTRA) *
sizeof (struct atto_vda_ob_rsp), 8 )
+ 256 ; /* VDA request and buffer align */
}
static void esas2r_init_pci_cfg_space(struct esas2r_adapter *a)
{
if (pci_is_pcie(a->pcid)) {
u16 devcontrol;
pcie_capability_read_word(a->pcid, PCI_EXP_DEVCTL, &devcontrol);
if ((devcontrol & PCI_EXP_DEVCTL_READRQ) >
PCI_EXP_DEVCTL_READRQ_512B) {
esas2r_log(ESAS2R_LOG_INFO,
"max read request size > 512B" );
devcontrol &= ~PCI_EXP_DEVCTL_READRQ;
devcontrol |= PCI_EXP_DEVCTL_READRQ_512B;
pcie_capability_write_word(a->pcid, PCI_EXP_DEVCTL,
devcontrol);
}
}
}
/*
* Determine the organization of the uncached data area and
* finish initializing the adapter structure
*/
bool esas2r_init_adapter_struct(struct esas2r_adapter *a,
void **uncached_area)
{
u32 i;
u8 *high;
struct esas2r_inbound_list_source_entry *element;
struct esas2r_request *rq;
struct esas2r_mem_desc *sgl;
spin_lock_init(&a->sg_list_lock);
spin_lock_init(&a->mem_lock);
spin_lock_init(&a->queue_lock);
a->targetdb_end = &a->targetdb[ESAS2R_MAX_TARGETS];
if (!alloc_vda_req(a, &a->general_req)) {
esas2r_hdebug(
"failed to allocate a VDA request for the general req!" );
return false ;
}
/* allocate requests for asynchronous events */
a->first_ae_req =
kcalloc(num_ae_requests, sizeof (struct esas2r_request),
GFP_KERNEL);
if (a->first_ae_req == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate memory for asynchronous events" );
return false ;
}
/* allocate the S/G list memory descriptors */
a->sg_list_mds = kcalloc(num_sg_lists, sizeof (struct esas2r_mem_desc),
GFP_KERNEL);
if (a->sg_list_mds == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate memory for s/g list descriptors" );
return false ;
}
/* allocate the request table */
a->req_table =
kcalloc(num_requests + num_ae_requests + 1 ,
sizeof (struct esas2r_request *),
GFP_KERNEL);
if (a->req_table == NULL) {
esas2r_log(ESAS2R_LOG_CRIT,
"failed to allocate memory for the request table" );
return false ;
}
/* initialize PCI configuration space */
esas2r_init_pci_cfg_space(a);
/*
* the thunder_stream boards all have a serial flash part that has a
* different base address on the AHB bus .
*/
if ((a->pcid->subsystem_vendor == ATTO_VENDOR_ID)
&& (a->pcid->subsystem_device & ATTO_SSDID_TBT))
a->flags2 |= AF2_THUNDERBOLT;
if (test_bit(AF2_THUNDERBOLT, &a->flags2))
a->flags2 |= AF2_SERIAL_FLASH;
if (a->pcid->subsystem_device == ATTO_TLSH_1068)
a->flags2 |= AF2_THUNDERLINK;
/* Uncached Area */
high = (u8 *)*uncached_area;
/* initialize the scatter/gather table pages */
for (i = 0 , sgl = a->sg_list_mds; i < num_sg_lists; i++, sgl++) {
sgl->size = sgl_page_size;
list_add_tail(&sgl->next_desc, &a->free_sg_list_head);
if (!esas2r_initmem_alloc(a, sgl, ESAS2R_SGL_ALIGN)) {
/* Allow the driver to load if the minimum count met. */
if (i < NUM_SGL_MIN)
return false ;
break ;
}
}
/* compute the size of the lists */
a->list_size = num_requests + ESAS2R_LIST_EXTRA;
/* allocate the inbound list */
a->inbound_list_md.size = a->list_size *
sizeof (struct
esas2r_inbound_list_source_entry);
if (!esas2r_initmem_alloc(a, &a->inbound_list_md, ESAS2R_LIST_ALIGN)) {
esas2r_hdebug("failed to allocate IB list" );
return false ;
}
/* allocate the outbound list */
a->outbound_list_md.size = a->list_size *
sizeof (struct atto_vda_ob_rsp);
if (!esas2r_initmem_alloc(a, &a->outbound_list_md,
ESAS2R_LIST_ALIGN)) {
esas2r_hdebug("failed to allocate IB list" );
return false ;
}
/* allocate the NVRAM structure */
a->nvram = (struct esas2r_sas_nvram *)high;
high += sizeof (struct esas2r_sas_nvram);
/* allocate the discovery buffer */
a->disc_buffer = high;
high += ESAS2R_DISC_BUF_LEN;
high = PTR_ALIGN(high, 8 );
/* allocate the outbound list copy pointer */
a->outbound_copy = (u32 volatile *)high;
high += sizeof (u32);
if (!test_bit(AF_NVR_VALID, &a->flags))
esas2r_nvram_set_defaults(a);
/* update the caller's uncached memory area pointer */
*uncached_area = (void *)high;
/* initialize the allocated memory */
if (test_bit(AF_FIRST_INIT, &a->flags)) {
esas2r_targ_db_initialize(a);
/* prime parts of the inbound list */
element =
(struct esas2r_inbound_list_source_entry *)a->
inbound_list_md.
virt_addr;
for (i = 0 ; i < a->list_size; i++) {
element->address = 0 ;
element->reserved = 0 ;
element->length = cpu_to_le32(HWILSE_INTERFACE_F0
| (sizeof (union
atto_vda_req)
/
sizeof (u32)));
element++;
}
/* init the AE requests */
for (rq = a->first_ae_req, i = 0 ; i < num_ae_requests; rq++,
i++) {
INIT_LIST_HEAD(&rq->req_list);
if (!alloc_vda_req(a, rq)) {
esas2r_hdebug(
"failed to allocate a VDA request!" );
return false ;
}
esas2r_rq_init_request(rq, a);
/* override the completion function */
rq->comp_cb = esas2r_ae_complete;
}
}
return true ;
}
/* This code will verify that the chip is operational. */
bool esas2r_check_adapter(struct esas2r_adapter *a)
{
u32 starttime;
u32 doorbell;
u64 ppaddr;
u32 dw;
/*
* if the chip reset detected flag is set , we can bypass a bunch of
* stuff .
*/
if (test_bit(AF_CHPRST_DETECTED, &a->flags))
goto skip_chip_reset;
/*
* BEFORE WE DO ANYTHING , disable the chip interrupts ! the boot driver
* may have left them enabled or we may be recovering from a fault .
*/
esas2r_write_register_dword(a, MU_INT_MASK_OUT, ESAS2R_INT_DIS_MASK);
esas2r_flush_register_dword(a, MU_INT_MASK_OUT);
/*
* wait for the firmware to become ready by forcing an interrupt and
* waiting for a response .
*/
starttime = jiffies_to_msecs(jiffies);
while (true ) {
esas2r_force_interrupt(a);
doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
if (doorbell == 0 xFFFFFFFF) {
/*
* Give the firmware up to two seconds to enable
* register access after a reset .
*/
if ((jiffies_to_msecs(jiffies) - starttime) > 2000 )
return esas2r_set_degraded_mode(a,
"unable to access registers" );
} else if (doorbell & DRBL_FORCE_INT) {
u32 ver = (doorbell & DRBL_FW_VER_MSK);
/*
* This driver supports version 0 and version 1 of
* the API
*/
esas2r_write_register_dword(a, MU_DOORBELL_OUT,
doorbell);
if (ver == DRBL_FW_VER_0) {
set_bit(AF_LEGACY_SGE_MODE, &a->flags);
a->max_vdareq_size = 128 ;
a->build_sgl = esas2r_build_sg_list_sge;
} else if (ver == DRBL_FW_VER_1) {
clear_bit(AF_LEGACY_SGE_MODE, &a->flags);
a->max_vdareq_size = 1024 ;
a->build_sgl = esas2r_build_sg_list_prd;
} else {
return esas2r_set_degraded_mode(a,
"unknown firmware version" );
}
break ;
}
schedule_timeout_interruptible(msecs_to_jiffies(100 ));
if ((jiffies_to_msecs(jiffies) - starttime) > 180000 ) {
esas2r_hdebug("FW ready TMO" );
esas2r_bugon();
return esas2r_set_degraded_mode(a,
"firmware start has timed out" );
}
}
/* purge any asynchronous events since we will repost them later */
esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_DOWN);
starttime = jiffies_to_msecs(jiffies);
while (true ) {
doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
if (doorbell & DRBL_MSG_IFC_DOWN) {
esas2r_write_register_dword(a, MU_DOORBELL_OUT,
doorbell);
break ;
}
schedule_timeout_interruptible(msecs_to_jiffies(50 ));
if ((jiffies_to_msecs(jiffies) - starttime) > 3000 ) {
esas2r_hdebug("timeout waiting for interface down" );
break ;
}
}
skip_chip_reset:
/*
* first things first , before we go changing any of these registers
* disable the communication lists .
*/
dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG);
dw &= ~MU_ILC_ENABLE;
esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw);
dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG);
dw &= ~MU_OLC_ENABLE;
esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw);
/* configure the communication list addresses */
ppaddr = a->inbound_list_md.phys_addr;
esas2r_write_register_dword(a, MU_IN_LIST_ADDR_LO,
lower_32_bits(ppaddr));
esas2r_write_register_dword(a, MU_IN_LIST_ADDR_HI,
upper_32_bits(ppaddr));
ppaddr = a->outbound_list_md.phys_addr;
esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_LO,
lower_32_bits(ppaddr));
esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_HI,
upper_32_bits(ppaddr));
ppaddr = a->uncached_phys +
((u8 *)a->outbound_copy - a->uncached);
esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_LO,
lower_32_bits(ppaddr));
esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_HI,
upper_32_bits(ppaddr));
/* reset the read and write pointers */
*a->outbound_copy =
a->last_write =
a->last_read = a->list_size - 1 ;
set_bit(AF_COMM_LIST_TOGGLE, &a->flags);
esas2r_write_register_dword(a, MU_IN_LIST_WRITE, MU_ILW_TOGGLE |
a->last_write);
esas2r_write_register_dword(a, MU_OUT_LIST_COPY, MU_OLC_TOGGLE |
a->last_write);
esas2r_write_register_dword(a, MU_IN_LIST_READ, MU_ILR_TOGGLE |
a->last_write);
esas2r_write_register_dword(a, MU_OUT_LIST_WRITE,
MU_OLW_TOGGLE | a->last_write);
/* configure the interface select fields */
dw = esas2r_read_register_dword(a, MU_IN_LIST_IFC_CONFIG);
dw &= ~(MU_ILIC_LIST | MU_ILIC_DEST);
esas2r_write_register_dword(a, MU_IN_LIST_IFC_CONFIG,
(dw | MU_ILIC_LIST_F0 | MU_ILIC_DEST_DDR));
dw = esas2r_read_register_dword(a, MU_OUT_LIST_IFC_CONFIG);
dw &= ~(MU_OLIC_LIST | MU_OLIC_SOURCE);
esas2r_write_register_dword(a, MU_OUT_LIST_IFC_CONFIG,
(dw | MU_OLIC_LIST_F0 |
MU_OLIC_SOURCE_DDR));
/* finish configuring the communication lists */
dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG);
dw &= ~(MU_ILC_ENTRY_MASK | MU_ILC_NUMBER_MASK);
dw |= MU_ILC_ENTRY_4_DW | MU_ILC_DYNAMIC_SRC
| (a->list_size << MU_ILC_NUMBER_SHIFT);
esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw);
dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG);
dw &= ~(MU_OLC_ENTRY_MASK | MU_OLC_NUMBER_MASK);
dw |= MU_OLC_ENTRY_4_DW | (a->list_size << MU_OLC_NUMBER_SHIFT);
esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw);
/*
* notify the firmware that we ' re done setting up the communication
* list registers . wait here until the firmware is done configuring
* its lists . it will signal that it is done by enabling the lists .
*/
esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_INIT);
starttime = jiffies_to_msecs(jiffies);
while (true ) {
doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
if (doorbell & DRBL_MSG_IFC_INIT) {
esas2r_write_register_dword(a, MU_DOORBELL_OUT,
doorbell);
break ;
}
schedule_timeout_interruptible(msecs_to_jiffies(100 ));
if ((jiffies_to_msecs(jiffies) - starttime) > 3000 ) {
esas2r_hdebug(
"timeout waiting for communication list init" );
esas2r_bugon();
return esas2r_set_degraded_mode(a,
"timeout waiting for communication list init" );
}
}
/*
* flag whether the firmware supports the power down doorbell . we
* determine this by reading the inbound doorbell enable mask .
*/
doorbell = esas2r_read_register_dword(a, MU_DOORBELL_IN_ENB);
if (doorbell & DRBL_POWER_DOWN)
set_bit(AF2_VDA_POWER_DOWN, &a->flags2);
else
clear_bit(AF2_VDA_POWER_DOWN, &a->flags2);
/*
* enable assertion of outbound queue and doorbell interrupts in the
* main interrupt cause register .
*/
esas2r_write_register_dword(a, MU_OUT_LIST_INT_MASK, MU_OLIS_MASK);
esas2r_write_register_dword(a, MU_DOORBELL_OUT_ENB, DRBL_ENB_MASK);
return true ;
}
/* Process the initialization message just completed and format the next one. */
static bool esas2r_format_init_msg(struct esas2r_adapter *a,
struct esas2r_request *rq)
{
u32 msg = a->init_msg;
struct atto_vda_cfg_init *ci;
a->init_msg = 0 ;
switch (msg) {
case ESAS2R_INIT_MSG_START:
case ESAS2R_INIT_MSG_REINIT:
{
esas2r_hdebug("CFG init" );
esas2r_build_cfg_req(a,
rq,
VDA_CFG_INIT,
0 ,
NULL);
ci = (struct atto_vda_cfg_init *)&rq->vrq->cfg.data.init;
ci->sgl_page_size = cpu_to_le32(sgl_page_size);
/* firmware interface overflows in y2106 */
ci->epoch_time = cpu_to_le32(ktime_get_real_seconds());
rq->flags |= RF_FAILURE_OK;
a->init_msg = ESAS2R_INIT_MSG_INIT;
break ;
}
case ESAS2R_INIT_MSG_INIT:
if (rq->req_stat == RS_SUCCESS) {
u32 major;
u32 minor;
u16 fw_release;
a->fw_version = le16_to_cpu(
rq->func_rsp.cfg_rsp.vda_version);
a->fw_build = rq->func_rsp.cfg_rsp.fw_build;
fw_release = le16_to_cpu(
rq->func_rsp.cfg_rsp.fw_release);
major = LOBYTE(fw_release);
minor = HIBYTE(fw_release);
a->fw_version += (major << 16 ) + (minor << 24 );
} else {
esas2r_hdebug("FAILED" );
}
/*
* the 2 . 71 and earlier releases of R6xx firmware did not error
* unsupported config requests correctly .
*/
if ((test_bit(AF2_THUNDERBOLT, &a->flags2))
|| (be32_to_cpu(a->fw_version) > 0 x00524702)) {
esas2r_hdebug("CFG get init" );
esas2r_build_cfg_req(a,
rq,
VDA_CFG_GET_INIT2,
sizeof (struct atto_vda_cfg_init),
NULL);
rq->vrq->cfg.sg_list_offset = offsetof(
struct atto_vda_cfg_req,
data.sge);
rq->vrq->cfg.data.prde.ctl_len =
cpu_to_le32(sizeof (struct atto_vda_cfg_init));
rq->vrq->cfg.data.prde.address = cpu_to_le64(
rq->vrq_md->phys_addr +
sizeof (union atto_vda_req));
rq->flags |= RF_FAILURE_OK;
a->init_msg = ESAS2R_INIT_MSG_GET_INIT;
break ;
}
fallthrough;
case ESAS2R_INIT_MSG_GET_INIT:
if (msg == ESAS2R_INIT_MSG_GET_INIT) {
ci = (struct atto_vda_cfg_init *)rq->data_buf;
if (rq->req_stat == RS_SUCCESS) {
a->num_targets_backend =
le32_to_cpu(ci->num_targets_backend);
a->ioctl_tunnel =
le32_to_cpu(ci->ioctl_tunnel);
} else {
esas2r_hdebug("FAILED" );
}
}
fallthrough;
default :
rq->req_stat = RS_SUCCESS;
return false ;
}
return true ;
}
/*
* Perform initialization messages via the request queue . Messages are
* performed with interrupts disabled .
*/
bool esas2r_init_msgs(struct esas2r_adapter *a)
{
bool success = true ;
struct esas2r_request *rq = &a->general_req;
esas2r_rq_init_request(rq, a);
rq->comp_cb = esas2r_dummy_complete;
if (a->init_msg == 0 )
a->init_msg = ESAS2R_INIT_MSG_REINIT;
while (a->init_msg) {
if (esas2r_format_init_msg(a, rq)) {
unsigned long flags;
while (true ) {
spin_lock_irqsave(&a->queue_lock, flags);
esas2r_start_vda_request(a, rq);
spin_unlock_irqrestore(&a->queue_lock, flags);
esas2r_wait_request(a, rq);
if (rq->req_stat != RS_PENDING)
break ;
}
}
if (rq->req_stat == RS_SUCCESS
|| ((rq->flags & RF_FAILURE_OK)
&& rq->req_stat != RS_TIMEOUT))
continue ;
esas2r_log(ESAS2R_LOG_CRIT, "init message %x failed (%x, %x)" ,
a->init_msg, rq->req_stat, rq->flags);
a->init_msg = ESAS2R_INIT_MSG_START;
success = false ;
break ;
}
esas2r_rq_destroy_request(rq, a);
return success;
}
/* Initialize the adapter chip */
bool esas2r_init_adapter_hw(struct esas2r_adapter *a, bool init_poll)
{
bool rslt = false ;
struct esas2r_request *rq;
u32 i;
if (test_bit(AF_DEGRADED_MODE, &a->flags))
goto exit ;
if (!test_bit(AF_NVR_VALID, &a->flags)) {
if (!esas2r_nvram_read_direct(a))
esas2r_log(ESAS2R_LOG_WARN,
"invalid/missing NVRAM parameters" );
}
if (!esas2r_init_msgs(a)) {
esas2r_set_degraded_mode(a, "init messages failed" );
goto exit ;
}
/* The firmware is ready. */
clear_bit(AF_DEGRADED_MODE, &a->flags);
clear_bit(AF_CHPRST_PENDING, &a->flags);
/* Post all the async event requests */
for (i = 0 , rq = a->first_ae_req; i < num_ae_requests; i++, rq++)
esas2r_start_ae_request(a, rq);
if (!a->flash_rev[0 ])
esas2r_read_flash_rev(a);
if (!a->image_type[0 ])
esas2r_read_image_type(a);
if (a->fw_version == 0 )
a->fw_rev[0 ] = 0 ;
else
sprintf(a->fw_rev, "%1d.%02d" ,
(int )LOBYTE(HIWORD(a->fw_version)),
(int )HIBYTE(HIWORD(a->fw_version)));
esas2r_hdebug("firmware revision: %s" , a->fw_rev);
if (test_bit(AF_CHPRST_DETECTED, &a->flags)
&& (test_bit(AF_FIRST_INIT, &a->flags))) {
esas2r_enable_chip_interrupts(a);
return true ;
}
/* initialize discovery */
esas2r_disc_initialize(a);
/*
* wait for the device wait time to expire here if requested . this is
* usually requested during initial driver load and possibly when
* resuming from a low power state . deferred device waiting will use
* interrupts . chip reset recovery always defers device waiting to
* avoid being in a TASKLET too long .
*/
if (init_poll) {
u32 currtime = a->disc_start_time;
u32 nexttick = 100 ;
u32 deltatime;
/*
* Block Tasklets from getting scheduled and indicate this is
* polled discovery .
*/
set_bit(AF_TASKLET_SCHEDULED, &a->flags);
set_bit(AF_DISC_POLLED, &a->flags);
/*
* Temporarily bring the disable count to zero to enable
* deferred processing . Note that the count is already zero
* after the first initialization .
*/
if (test_bit(AF_FIRST_INIT, &a->flags))
atomic_dec(&a->disable_cnt);
while (test_bit(AF_DISC_PENDING, &a->flags)) {
schedule_timeout_interruptible(msecs_to_jiffies(100 ));
/*
* Determine the need for a timer tick based on the
* delta time between this and the last iteration of
* this loop . We don ' t use the absolute time because
* then we would have to worry about when nexttick
* wraps and currtime hasn ' t yet .
*/
deltatime = jiffies_to_msecs(jiffies) - currtime;
currtime += deltatime;
/*
* Process any waiting discovery as long as the chip is
* up . If a chip reset happens during initial polling ,
* we have to make sure the timer tick processes the
* doorbell indicating the firmware is ready .
*/
if (!test_bit(AF_CHPRST_PENDING, &a->flags))
esas2r_disc_check_for_work(a);
/* Simulate a timer tick. */
if (nexttick <= deltatime) {
/* Time for a timer tick */
nexttick += 100 ;
esas2r_timer_tick(a);
}
if (nexttick > deltatime)
nexttick -= deltatime;
/* Do any deferred processing */
if (esas2r_is_tasklet_pending(a))
esas2r_do_tasklet_tasks(a);
}
if (test_bit(AF_FIRST_INIT, &a->flags))
atomic_inc(&a->disable_cnt);
clear_bit(AF_DISC_POLLED, &a->flags);
clear_bit(AF_TASKLET_SCHEDULED, &a->flags);
}
esas2r_targ_db_report_changes(a);
/*
* For cases where ( a ) the initialization messages processing may
* handle an interrupt for a port event and a discovery is waiting , but
* we are not waiting for devices , or ( b ) the device wait time has been
* exhausted but there is still discovery pending , start any leftover
* discovery in interrupt driven mode .
*/
esas2r_disc_start_waiting(a);
/* Enable chip interrupts */
a->int_mask = ESAS2R_INT_STS_MASK;
esas2r_enable_chip_interrupts(a);
esas2r_enable_heartbeat(a);
rslt = true ;
exit :
/*
* Regardless of whether initialization was successful , certain things
* need to get done before we exit .
*/
if (test_bit(AF_CHPRST_DETECTED, &a->flags) &&
test_bit(AF_FIRST_INIT, &a->flags)) {
/*
* Reinitialization was performed during the first
* initialization . Only clear the chip reset flag so the
* original device polling is not cancelled .
*/
if (!rslt)
clear_bit(AF_CHPRST_PENDING, &a->flags);
} else {
/* First initialization or a subsequent re-init is complete. */
if (!rslt) {
clear_bit(AF_CHPRST_PENDING, &a->flags);
clear_bit(AF_DISC_PENDING, &a->flags);
}
/* Enable deferred processing after the first initialization. */
if (test_bit(AF_FIRST_INIT, &a->flags)) {
clear_bit(AF_FIRST_INIT, &a->flags);
if (atomic_dec_return(&a->disable_cnt) == 0 )
esas2r_do_deferred_processes(a);
}
}
return rslt;
}
void esas2r_reset_adapter(struct esas2r_adapter *a)
{
set_bit(AF_OS_RESET, &a->flags);
esas2r_local_reset_adapter(a);
esas2r_schedule_tasklet(a);
}
void esas2r_reset_chip(struct esas2r_adapter *a)
{
if (!esas2r_is_adapter_present(a))
return ;
/*
* Before we reset the chip , save off the VDA core dump . The VDA core
* dump is located in the upper 512 KB of the onchip SRAM . Make sure
* to not overwrite a previous crash that was saved .
*/
if (test_bit(AF2_COREDUMP_AVAIL, &a->flags2) &&
!test_bit(AF2_COREDUMP_SAVED, &a->flags2)) {
esas2r_read_mem_block(a,
a->fw_coredump_buff,
MW_DATA_ADDR_SRAM + 0 x80000,
ESAS2R_FWCOREDUMP_SZ);
set_bit(AF2_COREDUMP_SAVED, &a->flags2);
}
clear_bit(AF2_COREDUMP_AVAIL, &a->flags2);
/* Reset the chip */
if (a->pcid->revision == MVR_FREY_B2)
esas2r_write_register_dword(a, MU_CTL_STATUS_IN_B2,
MU_CTL_IN_FULL_RST2);
else
esas2r_write_register_dword(a, MU_CTL_STATUS_IN,
MU_CTL_IN_FULL_RST);
/* Stall a little while to let the reset condition clear */
mdelay(10 );
}
static void esas2r_power_down_notify_firmware(struct esas2r_adapter *a)
{
u32 starttime;
u32 doorbell;
esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_POWER_DOWN);
starttime = jiffies_to_msecs(jiffies);
while (true ) {
doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT);
if (doorbell & DRBL_POWER_DOWN) {
esas2r_write_register_dword(a, MU_DOORBELL_OUT,
doorbell);
break ;
}
schedule_timeout_interruptible(msecs_to_jiffies(100 ));
if ((jiffies_to_msecs(jiffies) - starttime) > 30000 ) {
esas2r_hdebug("Timeout waiting for power down" );
break ;
}
}
}
/*
* Perform power management processing including managing device states , adapter
* states , interrupts , and I / O .
*/
void esas2r_power_down(struct esas2r_adapter *a)
{
set_bit(AF_POWER_MGT, &a->flags);
set_bit(AF_POWER_DOWN, &a->flags);
if (!test_bit(AF_DEGRADED_MODE, &a->flags)) {
u32 starttime;
u32 doorbell;
/*
* We are currently running OK and will be reinitializing later .
* increment the disable count to coordinate with
* esas2r_init_adapter . We don ' t have to do this in degraded
* mode since we never enabled interrupts in the first place .
*/
esas2r_disable_chip_interrupts(a);
esas2r_disable_heartbeat(a);
/* wait for any VDA activity to clear before continuing */
esas2r_write_register_dword(a, MU_DOORBELL_IN,
DRBL_MSG_IFC_DOWN);
starttime = jiffies_to_msecs(jiffies);
while (true ) {
doorbell =
esas2r_read_register_dword(a, MU_DOORBELL_OUT);
if (doorbell & DRBL_MSG_IFC_DOWN) {
esas2r_write_register_dword(a, MU_DOORBELL_OUT,
doorbell);
break ;
}
schedule_timeout_interruptible(msecs_to_jiffies(100 ));
if ((jiffies_to_msecs(jiffies) - starttime) > 3000 ) {
esas2r_hdebug(
"timeout waiting for interface down" );
break ;
}
}
/*
* For versions of firmware that support it tell them the driver
* is powering down .
*/
if (test_bit(AF2_VDA_POWER_DOWN, &a->flags2))
esas2r_power_down_notify_firmware(a);
}
/* Suspend I/O processing. */
set_bit(AF_OS_RESET, &a->flags);
set_bit(AF_DISC_PENDING, &a->flags);
set_bit(AF_CHPRST_PENDING, &a->flags);
esas2r_process_adapter_reset(a);
/* 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 );
}
/*
* Perform power management processing including managing device states , adapter
* states , interrupts , and I / O .
*/
bool esas2r_power_up(struct esas2r_adapter *a, bool init_poll)
{
bool ret;
clear_bit(AF_POWER_DOWN, &a->flags);
esas2r_init_pci_cfg_space(a);
set_bit(AF_FIRST_INIT, &a->flags);
atomic_inc(&a->disable_cnt);
/* reinitialize the adapter */
ret = esas2r_check_adapter(a);
if (!esas2r_init_adapter_hw(a, init_poll))
ret = false ;
/* send the reset asynchronous event */
esas2r_send_reset_ae(a, true );
/* clear this flag after initialization. */
clear_bit(AF_POWER_MGT, &a->flags);
return ret;
}
bool esas2r_is_adapter_present(struct esas2r_adapter *a)
{
if (test_bit(AF_NOT_PRESENT, &a->flags))
return false ;
if (esas2r_read_register_dword(a, MU_DOORBELL_OUT) == 0 xFFFFFFFF) {
set_bit(AF_NOT_PRESENT, &a->flags);
return false ;
}
return true ;
}
const char *esas2r_get_model_name(struct esas2r_adapter *a)
{
switch (a->pcid->subsystem_device) {
case ATTO_ESAS_R680:
return "ATTO ExpressSAS R680" ;
case ATTO_ESAS_R608:
return "ATTO ExpressSAS R608" ;
case ATTO_ESAS_R60F:
return "ATTO ExpressSAS R60F" ;
case ATTO_ESAS_R6F0:
return "ATTO ExpressSAS R6F0" ;
case ATTO_ESAS_R644:
return "ATTO ExpressSAS R644" ;
case ATTO_ESAS_R648:
return "ATTO ExpressSAS R648" ;
case ATTO_TSSC_3808:
return "ATTO ThunderStream SC 3808D" ;
case ATTO_TSSC_3808E:
return "ATTO ThunderStream SC 3808E" ;
case ATTO_TLSH_1068:
return "ATTO ThunderLink SH 1068" ;
}
return "ATTO SAS Controller" ;
}
const char *esas2r_get_model_name_short(struct esas2r_adapter *a)
{
switch (a->pcid->subsystem_device) {
case ATTO_ESAS_R680:
return "R680" ;
case ATTO_ESAS_R608:
return "R608" ;
case ATTO_ESAS_R60F:
return "R60F" ;
case ATTO_ESAS_R6F0:
return "R6F0" ;
case ATTO_ESAS_R644:
return "R644" ;
case ATTO_ESAS_R648:
return "R648" ;
case ATTO_TSSC_3808:
return "SC 3808D" ;
case ATTO_TSSC_3808E:
return "SC 3808E" ;
case ATTO_TLSH_1068:
return "SH 1068" ;
}
return "unknown" ;
}
Messung V0.5 in Prozent C=96 H=92 G=93
¤ Dauer der Verarbeitung: 0.28 Sekunden
(vorverarbeitet am 2026-09-28)
¤
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