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[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Sep 01

2

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

On Wed, Aug 19, 2020 at 08:55:49AM +0200, Christoph Hellwig wrote: > Use the proper modern API to transfer cache ownership for incoherent DMA. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > drivers/net/ethernet/seeq/sgiseeq.c | 12 ++++++++---- > 1 file changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c > index 39599bbb5d45b6..f91dae16d69a19 100644 > --- a/drivers/net/ethernet/seeq/sgiseeq.c > +++ b/drivers/net/...

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Sep 01

3

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

...; On Wed, Aug 19, 2020 at 08:55:49AM +0200, Christoph Hellwig wrote: > > > Use the proper modern API to transfer cache ownership for incoherent DMA. > > > > > > Signed-off-by: Christoph Hellwig <hch at lst.de> > > > --- > > > drivers/net/ethernet/seeq/sgiseeq.c | 12 ++++++++---- > > > 1 file changed, 8 insertions(+), 4 deletions(-) > > > > > > diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c > > > index 39599bbb5d45b6..f91dae16d69a19 100644 > > > --- a/drivers/n...

Function for computing the difference between 2 dates in months

2006 Apr 17

1

Function for computing the difference between 2 dates in months

Folks: With the help of David L. Reiner, I've developed a function that computes the number of months between 2 dates, x and y. num.months <- function ( x , y ) { x <- as.Date( x ) y <- as.Date( y ) seeq <- seq(from=x , to=y , by="months") ans <- length( seeq ) - 1 if ( max( seeq) > y ) ans <- ans -1 ans } To ease your reading this function, I've left out some data cleaning issues, and it is assumed that x <= y and that x and y were output from as.date function (...

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Aug 19

0

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

Use the proper modern API to transfer cache ownership for incoherent DMA. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/net/ethernet/seeq/sgiseeq.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c index 39599bbb5d45b6..f91dae16d69a19 100644 --- a/drivers/net/ethernet/seeq/sgiseeq.c +++ b/drivers/net/ethernet/seeq/sgiseeq.c @@ -11...

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Sep 01

0

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

...s Bogendoerfer wrote: > On Wed, Aug 19, 2020 at 08:55:49AM +0200, Christoph Hellwig wrote: > > Use the proper modern API to transfer cache ownership for incoherent DMA. > > > > Signed-off-by: Christoph Hellwig <hch at lst.de> > > --- > > drivers/net/ethernet/seeq/sgiseeq.c | 12 ++++++++---- > > 1 file changed, 8 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c > > index 39599bbb5d45b6..f91dae16d69a19 100644 > > --- a/drivers/net/ethernet/seeq/sgiseeq....

[PATCH 12/18] sgiseeq: convert to dma_alloc_noncoherent

2020 Sep 15

0

[PATCH 12/18] sgiseeq: convert to dma_alloc_noncoherent

...MA API including proper ownership transfers. This includes adding additional calls to dma_sync_desc_dev as the old syncing was rather ad-hoc. Thanks to Thomas Bogendoerfer for debugging the ownership transfer issues. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/net/ethernet/seeq/sgiseeq.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c index 8507ff2420143a..37ff25a84030eb 100644 --- a/drivers/net/ethernet/seeq/sgiseeq.c +++ b/drivers/net/ethernet/see...

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Sep 03

1

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

On Tue, Sep 01, 2020 at 07:38:10PM +0200, Thomas Bogendoerfer wrote: > this is the problem: > > /* Always check for received packets. */ > sgiseeq_rx(dev, sp, hregs, sregs); > > so the driver will look at the rx descriptor on every interrupt, so > we cache the rx descriptor on the first interrupt and if there was > $no rx packet, we will only see it, if cache line gets flushed for > some other reason. That means a transfer ba...

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

2020 Sep 02

1

[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device

...seems like > > we are missing one (or more) ownership transfers to the device. I'll > > try to look at the the ownership management in a little more detail > > tomorrow. > > this is the problem: > > /* Always check for received packets. */ > sgiseeq_rx(dev, sp, hregs, sregs); > > so the driver will look at the rx descriptor on every interrupt, so > we cache the rx descriptor on the first interrupt and if there was > $no rx packet, we will only see it, if cache line gets flushed for > some other reason. kick_tx() does a busy loo...

Function for computing the difference between 2 dates inmonths

2006 Apr 19

0

Function for computing the difference between 2 dates inmonths

....ch Subject: [R] Function for computing the difference between 2 dates in months Folks: With the help of David L. Reiner, I've developed a function that computes the number of months between 2 dates, x and y. num.months <- function ( x , y ) { x <- as.Date( x ) y <- as.Date( y ) seeq <- seq(from=x , to=y , by="months") ans <- length( seeq ) - 1 if ( max( seeq) > y ) ans <- ans -1 ans } To ease your reading this function, I've left out some data cleaning issues, and it is assumed that x <= y and that x and y were output from as.date function (...

[PATCH 11/17] sgiseeq: convert to dma_alloc_noncoherent

2020 Sep 14

2

[PATCH 11/17] sgiseeq: convert to dma_alloc_noncoherent

...debugging the ownership transfer issues. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/net/ethernet/i825xx/lasi_82596.c | 25 ++--- drivers/net/ethernet/i825xx/lib82596.c | 114 ++++++++++++++--------- drivers/net/ethernet/i825xx/sni_82596.c | 4 - drivers/net/ethernet/seeq/sgiseeq.c | 28 ++++-- drivers/scsi/53c700.c | 9 +- 5 files changed, 103 insertions(+), 77 deletions(-) diff --git a/drivers/net/ethernet/i825xx/lasi_82596.c b/drivers/net/ethernet/i825xx/lasi_82596.c index a12218e940a2fa..96c6f4f36904ed 100644 --- a/drivers/net/etherne...

[PATCH 19/28] dma-mapping: replace DMA_ATTR_NON_CONSISTENT with dma_{alloc, free}_pages

2020 Aug 19

0

[PATCH 19/28] dma-mapping: replace DMA_ATTR_NON_CONSISTENT with dma_{alloc, free}_pages

[PATCH 11/17] sgiseeq: convert to dma_alloc_noncoherent

2020 Sep 14

0

[PATCH 11/17] sgiseeq: convert to dma_alloc_noncoherent

On Mon, Sep 14, 2020 at 04:44:27PM +0200, Christoph Hellwig wrote: > drivers/net/ethernet/i825xx/lasi_82596.c | 25 ++--- > drivers/net/ethernet/i825xx/lib82596.c | 114 ++++++++++++++--------- > drivers/net/ethernet/i825xx/sni_82596.c | 4 - > drivers/net/ethernet/seeq/sgiseeq.c | 28 ++++-- > drivers/scsi/53c700.c | 9 +- > 5 files changed, 103 insertions(+), 77 deletions(-) I think your patch slicing-and-dicing went wrong here ;-(

a saner API for allocating DMA addressable pages

2020 Aug 19

39

a saner API for allocating DMA addressable pages

[PATCH 19/28] dma-mapping: replace DMA_ATTR_NON_CONSISTENT with dma_{alloc, free}_pages

2020 Aug 19

1

[PATCH 19/28] dma-mapping: replace DMA_ATTR_NON_CONSISTENT with dma_{alloc, free}_pages

[net-next V3 0/2] drivers: net: virtio_net: implement

2019 Nov 26

9

[net-next V3 0/2] drivers: net: virtio_net: implement