From: Sreekanth Reddy sreekanth.reddy@broadcom.com
[ Upstream commit 208cc9fe6f21112b5cc6cb87065fb8ab66e79316 ]
The driver must perform its 4GB boundary check using the pool's DMA address instead of using the virtual address.
Link: https://lore.kernel.org/r/20220303140230.13098-1-sreekanth.reddy@broadcom.co... Fixes: d6adc251dd2f ("scsi: mpt3sas: Force PCIe scatterlist allocations to be within same 4 GB region") Signed-off-by: Sreekanth Reddy sreekanth.reddy@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/mpt3sas/mpt3sas_base.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 76229b839560..fb5a3a348dbe 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -5736,14 +5736,13 @@ _base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc) */
static int -mpt3sas_check_same_4gb_region(long reply_pool_start_address, u32 pool_sz) +mpt3sas_check_same_4gb_region(dma_addr_t start_address, u32 pool_sz) { - long reply_pool_end_address; + dma_addr_t end_address;
- reply_pool_end_address = reply_pool_start_address + pool_sz; + end_address = start_address + pool_sz - 1;
- if (upper_32_bits(reply_pool_start_address) == - upper_32_bits(reply_pool_end_address)) + if (upper_32_bits(start_address) == upper_32_bits(end_address)) return 1; else return 0; @@ -5804,7 +5803,7 @@ _base_allocate_pcie_sgl_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) }
if (!mpt3sas_check_same_4gb_region( - (long)ioc->pcie_sg_lookup[i].pcie_sgl, sz)) { + ioc->pcie_sg_lookup[i].pcie_sgl_dma, sz)) { ioc_err(ioc, "PCIE SGLs are not in same 4G !! pcie sgl (0x%p) dma = (0x%llx)\n", ioc->pcie_sg_lookup[i].pcie_sgl, (unsigned long long) @@ -5859,8 +5858,8 @@ _base_allocate_chain_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) GFP_KERNEL, &ctr->chain_buffer_dma); if (!ctr->chain_buffer) return -EAGAIN; - if (!mpt3sas_check_same_4gb_region((long) - ctr->chain_buffer, ioc->chain_segment_sz)) { + if (!mpt3sas_check_same_4gb_region( + ctr->chain_buffer_dma, ioc->chain_segment_sz)) { ioc_err(ioc, "Chain buffers are not in same 4G !!! Chain buff (0x%p) dma = (0x%llx)\n", ctr->chain_buffer, @@ -5896,7 +5895,7 @@ _base_allocate_sense_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) GFP_KERNEL, &ioc->sense_dma); if (!ioc->sense) return -EAGAIN; - if (!mpt3sas_check_same_4gb_region((long)ioc->sense, sz)) { + if (!mpt3sas_check_same_4gb_region(ioc->sense_dma, sz)) { dinitprintk(ioc, pr_err( "Bad Sense Pool! sense (0x%p) sense_dma = (0x%llx)\n", ioc->sense, (unsigned long long) ioc->sense_dma)); @@ -5929,7 +5928,7 @@ _base_allocate_reply_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) &ioc->reply_dma); if (!ioc->reply) return -EAGAIN; - if (!mpt3sas_check_same_4gb_region((long)ioc->reply_free, sz)) { + if (!mpt3sas_check_same_4gb_region(ioc->reply_dma, sz)) { dinitprintk(ioc, pr_err( "Bad Reply Pool! Reply (0x%p) Reply dma = (0x%llx)\n", ioc->reply, (unsigned long long) ioc->reply_dma)); @@ -5964,7 +5963,7 @@ _base_allocate_reply_free_dma_pool(struct MPT3SAS_ADAPTER *ioc, u32 sz) GFP_KERNEL, &ioc->reply_free_dma); if (!ioc->reply_free) return -EAGAIN; - if (!mpt3sas_check_same_4gb_region((long)ioc->reply_free, sz)) { + if (!mpt3sas_check_same_4gb_region(ioc->reply_free_dma, sz)) { dinitprintk(ioc, pr_err("Bad Reply Free Pool! Reply Free (0x%p) Reply Free dma = (0x%llx)\n", ioc->reply_free, (unsigned long long) ioc->reply_free_dma)); @@ -6003,7 +6002,7 @@ _base_allocate_reply_post_free_array(struct MPT3SAS_ADAPTER *ioc, GFP_KERNEL, &ioc->reply_post_free_array_dma); if (!ioc->reply_post_free_array) return -EAGAIN; - if (!mpt3sas_check_same_4gb_region((long)ioc->reply_post_free_array, + if (!mpt3sas_check_same_4gb_region(ioc->reply_post_free_array_dma, reply_post_free_array_sz)) { dinitprintk(ioc, pr_err( "Bad Reply Free Pool! Reply Free (0x%p) Reply Free dma = (0x%llx)\n", @@ -6068,7 +6067,7 @@ base_alloc_rdpq_dma_pool(struct MPT3SAS_ADAPTER *ioc, int sz) * resources and set DMA mask to 32 and allocate. */ if (!mpt3sas_check_same_4gb_region( - (long)ioc->reply_post[i].reply_post_free, sz)) { + ioc->reply_post[i].reply_post_free_dma, sz)) { dinitprintk(ioc, ioc_err(ioc, "bad Replypost free pool(0x%p)" "reply_post_free_dma = (0x%llx)\n",