| Message ID | 1392804931-30671-6-git-send-email-agordeev@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Wed, Feb 19, 2014 at 3:15 AM, Alexander Gordeev <agordeev@redhat.com> wrote: > As result of deprecation of MSI-X/MSI enablement functions > pci_enable_msix() and pci_enable_msi_block() all drivers > using these two interfaces need to be updated to use the > new pci_enable_msi_range() and pci_enable_msix_range() > interfaces. > > Signed-off-by: Alexander Gordeev <agordeev@redhat.com> > Cc: Bjorn Helgaas <bhelgaas@google.com> > Cc: linux-pci@vger.kernel.org > --- > drivers/pci/pcie/portdrv_core.c | 17 ++++++++++------- > 1 files changed, 10 insertions(+), 7 deletions(-) > > diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c > index 986f8ea..4e46eca 100644 > --- a/drivers/pci/pcie/portdrv_core.c > +++ b/drivers/pci/pcie/portdrv_core.c > @@ -99,8 +99,9 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) > for (i = 0; i < nr_entries; i++) > msix_entries[i].entry = i; > > - status = pci_enable_msix(dev, msix_entries, nr_entries); > - if (status) > + status = pci_enable_msix_range(dev, > + msix_entries, nr_entries, nr_entries); This is a place we could use pci_enable_msix_exact(), isn't it? (Also below.) > + if (status < 0) > goto Exit; > > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) > @@ -159,21 +160,23 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) > idx[PCIE_PORT_SERVICE_AER_SHIFT] = i; > } > > + status = 0; > + > /* > * If nvec is equal to the allocated number of entries, we can just use > * what we have. Otherwise, the port has some extra entries not for the > * services we know and we need to work around that. > */ > - if (nvec == nr_entries) { > - status = 0; > - } else { > + if (nvec != nr_entries) { > /* Drop the temporary MSI-X setup */ > pci_disable_msix(dev); > > /* Now allocate the MSI-X vectors for real */ > - status = pci_enable_msix(dev, msix_entries, nvec); > - if (status) > + nvec = pci_enable_msix_range(dev, msix_entries, nvec, nvec); > + if (nvec < 0) { > + status = nvec; > goto Exit; > + } > } > > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) > -- > 1.7.7.6 > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Feb 19, 2014 at 03:09:41PM -0700, Bjorn Helgaas wrote: > On Wed, Feb 19, 2014 at 3:15 AM, Alexander Gordeev <agordeev@redhat.com> wrote: > > As result of deprecation of MSI-X/MSI enablement functions > > pci_enable_msix() and pci_enable_msi_block() all drivers > > using these two interfaces need to be updated to use the > > new pci_enable_msi_range() and pci_enable_msix_range() > > interfaces. > > > > Signed-off-by: Alexander Gordeev <agordeev@redhat.com> > > Cc: Bjorn Helgaas <bhelgaas@google.com> > > Cc: linux-pci@vger.kernel.org > > --- > > drivers/pci/pcie/portdrv_core.c | 17 ++++++++++------- > > 1 files changed, 10 insertions(+), 7 deletions(-) > > > > diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c > > index 986f8ea..4e46eca 100644 > > --- a/drivers/pci/pcie/portdrv_core.c > > +++ b/drivers/pci/pcie/portdrv_core.c > > @@ -99,8 +99,9 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) > > for (i = 0; i < nr_entries; i++) > > msix_entries[i].entry = i; > > > > - status = pci_enable_msix(dev, msix_entries, nr_entries); > > - if (status) > > + status = pci_enable_msix_range(dev, > > + msix_entries, nr_entries, nr_entries); > > This is a place we could use pci_enable_msix_exact(), isn't it? (Also below.) Yes, absolutely. I posted it (and other updates) as is, since I understood pci_enable_msix_exact() is not going to make it into 3.14. Was I wrong here? I think more time in testing with either pci_enable_msix_range() or pci_enable_msix_exact() is good. And a follow-up switch from pci_enable_msix_range() to pci_enable_msix_exact() should be easy eigher. What do you think is the best course of action now? > > + if (status < 0) > > goto Exit; > > > > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) > > @@ -159,21 +160,23 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) > > idx[PCIE_PORT_SERVICE_AER_SHIFT] = i; > > } > > > > + status = 0; > > + > > /* > > * If nvec is equal to the allocated number of entries, we can just use > > * what we have. Otherwise, the port has some extra entries not for the > > * services we know and we need to work around that. > > */ > > - if (nvec == nr_entries) { > > - status = 0; > > - } else { > > + if (nvec != nr_entries) { > > /* Drop the temporary MSI-X setup */ > > pci_disable_msix(dev); > > > > /* Now allocate the MSI-X vectors for real */ > > - status = pci_enable_msix(dev, msix_entries, nvec); > > - if (status) > > + nvec = pci_enable_msix_range(dev, msix_entries, nvec, nvec); > > + if (nvec < 0) { > > + status = nvec; > > goto Exit; > > + } > > } > > > > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) > > -- > > 1.7.7.6 > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
On Thu, Feb 20, 2014 at 5:44 AM, Alexander Gordeev <agordeev@redhat.com> wrote: > On Wed, Feb 19, 2014 at 03:09:41PM -0700, Bjorn Helgaas wrote: >> On Wed, Feb 19, 2014 at 3:15 AM, Alexander Gordeev <agordeev@redhat.com> wrote: >> > As result of deprecation of MSI-X/MSI enablement functions >> > pci_enable_msix() and pci_enable_msi_block() all drivers >> > using these two interfaces need to be updated to use the >> > new pci_enable_msi_range() and pci_enable_msix_range() >> > interfaces. >> > >> > Signed-off-by: Alexander Gordeev <agordeev@redhat.com> >> > Cc: Bjorn Helgaas <bhelgaas@google.com> >> > Cc: linux-pci@vger.kernel.org >> > --- >> > drivers/pci/pcie/portdrv_core.c | 17 ++++++++++------- >> > 1 files changed, 10 insertions(+), 7 deletions(-) >> > >> > diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c >> > index 986f8ea..4e46eca 100644 >> > --- a/drivers/pci/pcie/portdrv_core.c >> > +++ b/drivers/pci/pcie/portdrv_core.c >> > @@ -99,8 +99,9 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) >> > for (i = 0; i < nr_entries; i++) >> > msix_entries[i].entry = i; >> > >> > - status = pci_enable_msix(dev, msix_entries, nr_entries); >> > - if (status) >> > + status = pci_enable_msix_range(dev, >> > + msix_entries, nr_entries, nr_entries); >> >> This is a place we could use pci_enable_msix_exact(), isn't it? (Also below.) > > Yes, absolutely. > > I posted it (and other updates) as is, since I understood > pci_enable_msix_exact() is not going to make it into 3.14. Was I wrong here? Ooh, sorry, I do plan to merge pci_enable_msix_exact() and some of the other infrastructure patches for v3.14. They've been in my for-linus branch for a week or so, and I plan to ask Linus to pull them today. Sorry I didn't make that more clear. > I think more time in testing with either pci_enable_msix_range() or > pci_enable_msix_exact() is good. And a follow-up switch from > pci_enable_msix_range() to pci_enable_msix_exact() should be easy eigher. > > What do you think is the best course of action now? You should be able to post patches that use pci_enable_msix_exact(); that's been in -next for a while now. Maybe include a cover note saying what they depend on. Bjorn >> > + if (status < 0) >> > goto Exit; >> > >> > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) >> > @@ -159,21 +160,23 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) >> > idx[PCIE_PORT_SERVICE_AER_SHIFT] = i; >> > } >> > >> > + status = 0; >> > + >> > /* >> > * If nvec is equal to the allocated number of entries, we can just use >> > * what we have. Otherwise, the port has some extra entries not for the >> > * services we know and we need to work around that. >> > */ >> > - if (nvec == nr_entries) { >> > - status = 0; >> > - } else { >> > + if (nvec != nr_entries) { >> > /* Drop the temporary MSI-X setup */ >> > pci_disable_msix(dev); >> > >> > /* Now allocate the MSI-X vectors for real */ >> > - status = pci_enable_msix(dev, msix_entries, nvec); >> > - if (status) >> > + nvec = pci_enable_msix_range(dev, msix_entries, nvec, nvec); >> > + if (nvec < 0) { >> > + status = nvec; >> > goto Exit; >> > + } >> > } >> > >> > for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) >> > -- >> > 1.7.7.6 >> > >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > > -- > Regards, > Alexander Gordeev > agordeev@redhat.com -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 986f8ea..4e46eca 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -99,8 +99,9 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) for (i = 0; i < nr_entries; i++) msix_entries[i].entry = i; - status = pci_enable_msix(dev, msix_entries, nr_entries); - if (status) + status = pci_enable_msix_range(dev, + msix_entries, nr_entries, nr_entries); + if (status < 0) goto Exit; for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) @@ -159,21 +160,23 @@ static int pcie_port_enable_msix(struct pci_dev *dev, int *vectors, int mask) idx[PCIE_PORT_SERVICE_AER_SHIFT] = i; } + status = 0; + /* * If nvec is equal to the allocated number of entries, we can just use * what we have. Otherwise, the port has some extra entries not for the * services we know and we need to work around that. */ - if (nvec == nr_entries) { - status = 0; - } else { + if (nvec != nr_entries) { /* Drop the temporary MSI-X setup */ pci_disable_msix(dev); /* Now allocate the MSI-X vectors for real */ - status = pci_enable_msix(dev, msix_entries, nvec); - if (status) + nvec = pci_enable_msix_range(dev, msix_entries, nvec, nvec); + if (nvec < 0) { + status = nvec; goto Exit; + } } for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++)
As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() and pci_enable_msix_range() interfaces. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-pci@vger.kernel.org --- drivers/pci/pcie/portdrv_core.c | 17 ++++++++++------- 1 files changed, 10 insertions(+), 7 deletions(-)