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scsi: mpt3sas: Don't change the DMA coherent mask after allocations

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The DMA layer does not allow changing the DMA coherent mask after there are
outstanding allocations.

Link: https://lore.kernel.org/r/1587626596-1044-2-git-send-email-suganath-prabu.subramani@broadcom.com
Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-04-23 03:23:12 -04:00 committed by Martin K. Petersen
parent bc834e074e
commit ba27c5cf28
2 changed files with 19 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
drivers/scsi/mpt3sas/mpt3sas_base.c
View File

@ -2806,58 +2806,38 @@ _base_build_sg_ieee(struct MPT3SAS_ADAPTER *ioc, void *psge,
static int
_base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
{
u64 required_mask, coherent_mask;
struct sysinfo s;
int dma_mask;
if (ioc->is_mcpu_endpoint ||
sizeof(dma_addr_t) == 4 ||
dma_get_required_mask(&pdev->dev) <= 32)
dma_mask = 32;
/* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */
int dma_mask = (ioc->hba_mpi_version_belonged > MPI2_VERSION) ? 63 : 64;
if (ioc->is_mcpu_endpoint)
goto try_32bit;
required_mask = dma_get_required_mask(&pdev->dev);
if (sizeof(dma_addr_t) == 4 || required_mask == 32)
goto try_32bit;
if (ioc->dma_mask)
coherent_mask = DMA_BIT_MASK(dma_mask);
else if (ioc->hba_mpi_version_belonged > MPI2_VERSION)
dma_mask = 63;
else
coherent_mask = DMA_BIT_MASK(32);
dma_mask = 64;
if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(dma_mask)) ||
dma_set_coherent_mask(&pdev->dev, coherent_mask))
goto try_32bit;
ioc->base_add_sg_single = &_base_add_sg_single_64;
ioc->sge_size = sizeof(Mpi2SGESimple64_t);
ioc->dma_mask = dma_mask;
goto out;
try_32bit:
if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(dma_mask)))
return -ENODEV;
ioc->base_add_sg_single = &_base_add_sg_single_32;
ioc->sge_size = sizeof(Mpi2SGESimple32_t);
ioc->dma_mask = 32;
out:
if (dma_mask > 32) {
ioc->base_add_sg_single = &_base_add_sg_single_64;
ioc->sge_size = sizeof(Mpi2SGESimple64_t);
} else {
ioc->base_add_sg_single = &_base_add_sg_single_32;
ioc->sge_size = sizeof(Mpi2SGESimple32_t);
}
si_meminfo(&s);
ioc_info(ioc, "%d BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n",
ioc->dma_mask, convert_to_kb(s.totalram));
dma_mask, convert_to_kb(s.totalram));
return 0;
}
static int
_base_change_consistent_dma_mask(struct MPT3SAS_ADAPTER *ioc,
struct pci_dev *pdev)
{
if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(ioc->dma_mask))) {
if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
return -ENODEV;
}
return 0;
}
/**
* _base_check_enable_msix - checks MSIX capabable.
* @ioc: per adapter object
@ -5169,14 +5149,6 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc)
total_sz += sz;
} while (ioc->rdpq_array_enable && (++i < ioc->reply_queue_count));
if (ioc->dma_mask > 32) {
if (_base_change_consistent_dma_mask(ioc, ioc->pdev) != 0) {
ioc_warn(ioc, "no suitable consistent DMA mask for %s\n",
pci_name(ioc->pdev));
goto out;
}
}
ioc->scsiio_depth = ioc->hba_queue_depth -
ioc->hi_priority_depth - ioc->internal_depth;
@ -7158,7 +7130,6 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
ioc->smp_affinity_enable = smp_affinity_enable;
ioc->rdpq_array_enable_assigned = 0;
ioc->dma_mask = 0;
if (ioc->is_aero_ioc)
ioc->base_readl = &_base_readl_aero;
else

2
drivers/scsi/mpt3sas/mpt3sas_base.h
View File

@ -1026,7 +1026,6 @@ typedef void (*MPT3SAS_FLUSH_RUNNING_CMDS)(struct MPT3SAS_ADAPTER *ioc);
* @ir_firmware: IR firmware present
* @bars: bitmask of BAR's that must be configured
* @mask_interrupts: ignore interrupt
* @dma_mask: used to set the consistent dma mask
* @pci_access_mutex: Mutex to synchronize ioctl, sysfs show path and
* pci resource handling
* @fault_reset_work_q_name: fw fault work queue
@ -1205,7 +1204,6 @@ struct MPT3SAS_ADAPTER {
u8 ir_firmware;
int bars;
u8 mask_interrupts;
int dma_mask;
/* fw fault handler */
char fault_reset_work_q_name[20];