On Thu, 2022-03-03 at 19:32 +0530, Sreekanth Reddy wrote:
> Driver has to do a 4gb boundary check using the pool's
> dma address instead of using a virtual address.
>
> Fixes: d6adc251dd2f("mpt3sas: Force PCIe scatterlist allocations to
> be within same 4 GB region")
> Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
> ---
> 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 ebb61b47dc2f..a10ceaa8f881 100644
> --- a/drivers/scsi/mpt3sas/mpt3sas_base.c
> +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
> @@ -5723,14 +5723,13 @@ _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;
> @@ -5791,7 +5790,7 @@ _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)
> @@ -5846,8 +5845,8 @@ _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,
> @@ -5883,7 +5882,7 @@ _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));
> @@ -5916,7 +5915,7 @@ _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));
> @@ -5951,7 +5950,7 @@ _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));
> @@ -5990,7 +5989,7 @@ _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",
> @@ -6055,7 +6054,7 @@ 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",
Please add
Suggested-by: David Jeffery <djeffery@xxxxxxxxxx>
