| Message ID | 20210205162346.2847165-1-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | sdhci: stop poking into swiotlb internals | expand |
On 05. 02. 21, 19:43, Adrian Hunter wrote: > + Jiri Slaby <jslaby@suse.cz> > > On 5/02/21 6:23 pm, Christoph Hellwig wrote: >> Use the proper API to query the max mapping size instead of guessing >> it based on swiotlb internals. >> >> Signed-off-by: Christoph Hellwig <hch@lst.de> >> --- >> drivers/mmc/host/sdhci.c | 9 ++------- >> 1 file changed, 2 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c >> index 646823ddd31715..2d73407ee52ec7 100644 >> --- a/drivers/mmc/host/sdhci.c >> +++ b/drivers/mmc/host/sdhci.c >> @@ -20,7 +20,6 @@ >> #include <linux/slab.h> >> #include <linux/scatterlist.h> >> #include <linux/sizes.h> >> -#include <linux/swiotlb.h> >> #include <linux/regulator/consumer.h> >> #include <linux/pm_runtime.h> >> #include <linux/of.h> >> @@ -4582,12 +4581,8 @@ int sdhci_setup_host(struct sdhci_host *host) >> mmc->max_segs = SDHCI_MAX_SEGS; >> } else if (host->flags & SDHCI_USE_SDMA) { >> mmc->max_segs = 1; >> - if (swiotlb_max_segment()) { >> - unsigned int max_req_size = (1 << IO_TLB_SHIFT) * >> - IO_TLB_SEGSIZE; >> - mmc->max_req_size = min(mmc->max_req_size, >> - max_req_size); >> - } >> + mmc->max_req_size = min_t(size_t, mmc->max_req_size, >> + dma_max_mapping_size(mmc_dev(mmc))); dma_max_mapping_size() should return the same for swiotlb (swiotlb_max_mapping_size()), right? I don't have the laptop, it was ThinkPad X230 if anyone wants to test this... thanks,
On Wed, Feb 17, 2021 at 01:10:48PM +0100, Jiri Slaby wrote: > dma_max_mapping_size() should return the same for swiotlb > (swiotlb_max_mapping_size()), right? Yes.
On 5/02/21 6:23 pm, Christoph Hellwig wrote: > Use the proper API to query the max mapping size instead of guessing > it based on swiotlb internals. > > Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Adrian Hunter <adrian.hunter@intel.com> > --- > drivers/mmc/host/sdhci.c | 9 ++------- > 1 file changed, 2 insertions(+), 7 deletions(-) > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > index 646823ddd31715..2d73407ee52ec7 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -20,7 +20,6 @@ > #include <linux/slab.h> > #include <linux/scatterlist.h> > #include <linux/sizes.h> > -#include <linux/swiotlb.h> > #include <linux/regulator/consumer.h> > #include <linux/pm_runtime.h> > #include <linux/of.h> > @@ -4582,12 +4581,8 @@ int sdhci_setup_host(struct sdhci_host *host) > mmc->max_segs = SDHCI_MAX_SEGS; > } else if (host->flags & SDHCI_USE_SDMA) { > mmc->max_segs = 1; > - if (swiotlb_max_segment()) { > - unsigned int max_req_size = (1 << IO_TLB_SHIFT) * > - IO_TLB_SEGSIZE; > - mmc->max_req_size = min(mmc->max_req_size, > - max_req_size); > - } > + mmc->max_req_size = min_t(size_t, mmc->max_req_size, > + dma_max_mapping_size(mmc_dev(mmc))); > } else { /* PIO */ > mmc->max_segs = SDHCI_MAX_SEGS; > } >
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 646823ddd31715..2d73407ee52ec7 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -20,7 +20,6 @@ #include <linux/slab.h> #include <linux/scatterlist.h> #include <linux/sizes.h> -#include <linux/swiotlb.h> #include <linux/regulator/consumer.h> #include <linux/pm_runtime.h> #include <linux/of.h> @@ -4582,12 +4581,8 @@ int sdhci_setup_host(struct sdhci_host *host) mmc->max_segs = SDHCI_MAX_SEGS; } else if (host->flags & SDHCI_USE_SDMA) { mmc->max_segs = 1; - if (swiotlb_max_segment()) { - unsigned int max_req_size = (1 << IO_TLB_SHIFT) * - IO_TLB_SEGSIZE; - mmc->max_req_size = min(mmc->max_req_size, - max_req_size); - } + mmc->max_req_size = min_t(size_t, mmc->max_req_size, + dma_max_mapping_size(mmc_dev(mmc))); } else { /* PIO */ mmc->max_segs = SDHCI_MAX_SEGS; }
Use the proper API to query the max mapping size instead of guessing it based on swiotlb internals. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/mmc/host/sdhci.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)