Re: [RFC] use pci_find_ext_capability everywhere

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I was applying the file 1115-001.bin file at
http://article.gmane.org/gmane.linux.kernel.pci/1115

Apologies but I'm a hardware guy and not much of a Linux expert ->
where would I get the latest pci tree and can I simply copy this into
my current 2.6.26.5 kernel source directories, apply the patch, and
compile that way?

Thanks for the help.
Tomasz

On 10/6/08, Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote:
> You're applying this one?  Would be best to try with the linux-next branch of
>  my pci-2.6 tree; I don't have a backport to 2.6.26.5 handy...
>
>
>  Jesse
>
>
>  On Monday, October 6, 2008 2:11 pm Tomasz Czernecki wrote:
>  > Hi Yanmin,
>  >
>  > When I attempt to apply the patch to a freshly extracted, uncompiled,
>  > clean 2.6.26.5 kernel using cat <file> | patch -p1, I get errors.
>  > Please see the attached screen capture.  Can you comment?  Is this
>  > patch only for newer kernels, or is there another version available
>  > that works for mine?
>  >
>  > Thanks.
>  > Tomasz
>  >
>  > On Sun, Oct 5, 2008 at 9:12 PM, Tomasz Czernecki <czernecki@xxxxxxxxx>
>  wrote:
>  > > I'll try to give this a run tomorrow - thanks Yanmin & others.
>  > >
>  > > Tomasz
>  > >
>  > > On 10/5/08, Zhang, Yanmin <yanmin_zhang@xxxxxxxxxxxxxxx> wrote:
>  > >> Tomasz,
>  > >>
>  > >>  Matthew and Jesse have a better patch to fix the AER issue on your
>  > >> machine. Would you like to help test the new patch? You could get the
>  > >> new patch at:
>  > >>  http://article.gmane.org/gmane.linux.kernel.pci/1115.
>  > >>
>  > >>  Thanks,
>  > >>  Yanmin
>  > >>
>  > >>  On Fri, 2008-10-03 at 09:24 -0700, Jesse Barnes wrote:
>  > >>  > On Friday, October 3, 2008 8:39 am Jesse Barnes wrote:
>  > >>  > > On Friday, October 3, 2008 7:50 am Matthew Wilcox wrote:
>  > >>  > > > On Thu, Oct 02, 2008 at 11:50:24AM -0700, Jesse Barnes wrote:
>  > >>  > > > > +++ b/drivers/pci/pcie/aer/aerdrv.c
>  > >>  > > > > @@ -105,7 +105,7 @@ static irqreturn_t aer_irq(int irq, void
>  > >>  > > > > *context) unsigned long flags;
>  > >>  > > > >         int pos;
>  > >>  > > > >
>  > >>  > > > > -       pos = pci_find_aer_capability(pdev->port);
>  > >>  > > > > +       pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  > > > >         /*
>  > >>  > > > >          * Must lock access to Root Error Status Reg, Root
>  > >>  > > > > Error ID Reg, * and Root error producer/consumer index
>  > >>  > > >
>  > >>  > > > Waitaminute ... you didn't actually compile this, did you?  pdev
>  > >>  > > > changes
>  > >>  > > >
>  > >>  > > > to dev in three other hunks:
>  > >>  > >
>  > >>  > > Doh!  You caught me. :)  That's why I was careful to put [RFC]
>  > >>  > > rather than [PATCH] on the subject.
>  > >>  > >
>  > >>  > > But since you're looking... I'll respin and include a change to do
>  > >>  > > something similar to get_port_device_capability(), please check it
>  > >>  > > out when you get a chance.
>  > >>  >
>  > >>  > Ok, here's an updated version that fixes the qla_os.c change (Andrew,
>  > >>  > how does this look?) and also fixes up the portdrv_core.c stuff
>  > >>  > (Yanmin can you take a look at that to see if it'll fix your
>  > >>  > problem?).
>  > >>  >
>  > >>  > Thanks,
>  > >>  > --
>  > >>  > Jesse Barnes, Intel Open Source Technology Center
>  > >>  >
>  > >>  >
>  > >>  > diff --git a/drivers/pci/pcie/aer/aerdrv.c
>  > >>  > b/drivers/pci/pcie/aer/aerdrv.c index 77036f4..e390707 100644
>  > >>  > --- a/drivers/pci/pcie/aer/aerdrv.c
>  > >>  > +++ b/drivers/pci/pcie/aer/aerdrv.c
>  > >>  > @@ -105,7 +105,7 @@ static irqreturn_t aer_irq(int irq, void
>  > >>  > *context) unsigned long flags;
>  > >>  >       int pos;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(pdev->port);
>  > >>  > +     pos = pci_find_ext_capability(pdev->port, PCI_EXT_CAP_ID_ERR);
>  > >>  >       /*
>  > >>  >        * Must lock access to Root Error Status Reg, Root Error ID
>  > >>  > Reg, * and Root error producer/consumer index
>  > >>  > @@ -252,7 +252,7 @@ static pci_ers_result_t aer_root_reset(struct
>  > >>  > pci_dev *dev)
>  > >>  >       u32 status;
>  > >>  >       int pos;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(dev);
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >
>  > >>  >       /* Disable Root's interrupt in response to error messages */
>  > >>  >       pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, 0);
>  > >>  > @@ -316,7 +316,7 @@ static void aer_error_resume(struct pci_dev *dev)
>  > >>  >       pci_write_config_word(dev, pos + PCI_EXP_DEVSTA, reg16);
>  > >>  >
>  > >>  >       /* Clean AER Root Error Status */
>  > >>  > -     pos = pci_find_aer_capability(dev);
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >       pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS,
>  > >>  > &status); pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER,
>  > >>  > &mask); if (dev->error_state == pci_channel_io_normal)
>  > >>  > diff --git a/drivers/pci/pcie/aer/aerdrv_core.c
>  > >>  > b/drivers/pci/pcie/aer/aerdrv_core.c
>  > >>  > index 6f5244b..2ef8bbd 100644
>  > >>  > --- a/drivers/pci/pcie/aer/aerdrv_core.c
>  > >>  > +++ b/drivers/pci/pcie/aer/aerdrv_core.c
>  > >>  > @@ -28,35 +28,6 @@
>  > >>  >  static int forceload;
>  > >>  >  module_param(forceload, bool, 0);
>  > >>  >
>  > >>  > -int pci_find_aer_capability(struct pci_dev *dev)
>  > >>  > -{
>  > >>  > -     int pos;
>  > >>  > -     u32 reg32 = 0;
>  > >>  > -
>  > >>  > -     /* Check if it's a pci-express device */
>  > >>  > -     pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
>  > >>  > -     if (!pos)
>  > >>  > -             return 0;
>  > >>  > -
>  > >>  > -     /* Check if it supports pci-express AER */
>  > >>  > -     pos = PCI_CFG_SPACE_SIZE;
>  > >>  > -     while (pos) {
>  > >>  > -             if (pci_read_config_dword(dev, pos, &reg32))
>  > >>  > -                     return 0;
>  > >>  > -
>  > >>  > -             /* some broken boards return ~0 */
>  > >>  > -             if (reg32 == 0xffffffff)
>  > >>  > -                     return 0;
>  > >>  > -
>  > >>  > -             if (PCI_EXT_CAP_ID(reg32) == PCI_EXT_CAP_ID_ERR)
>  > >>  > -                     break;
>  > >>  > -
>  > >>  > -             pos = reg32 >> 20;
>  > >>  > -     }
>  > >>  > -
>  > >>  > -     return pos;
>  > >>  > -}
>  > >>  > -
>  > >>  >  int pci_enable_pcie_error_reporting(struct pci_dev *dev)
>  > >>  >  {
>  > >>  >       u16 reg16 = 0;
>  > >>  > @@ -66,6 +37,10 @@ int pci_enable_pcie_error_reporting(struct pci_dev
>  > >>  > *dev) if (!pos)
>  > >>  >               return -EIO;
>  > >>  >
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  > +     if (!pos)
>  > >>  > +             return -EIO;
>  > >>  > +
>  > >>  >       pci_read_config_word(dev, pos+PCI_EXP_DEVCTL, &reg16);
>  > >>  >       reg16 = reg16 |
>  > >>  >               PCI_EXP_DEVCTL_CERE |
>  > >>  > @@ -101,7 +76,7 @@ int pci_cleanup_aer_uncorrect_error_status(struct
>  > >>  > pci_dev *dev)
>  > >>  >       int pos;
>  > >>  >       u32 status, mask;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(dev);
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >       if (!pos)
>  > >>  >               return -EIO;
>  > >>  >
>  > >>  > @@ -122,7 +97,7 @@ int pci_cleanup_aer_correct_error_status(struct
>  > >>  > pci_dev *dev)
>  > >>  >       int pos;
>  > >>  >       u32 status;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(dev);
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >       if (!pos)
>  > >>  >               return -EIO;
>  > >>  >
>  > >>  > @@ -501,7 +476,7 @@ static void handle_error_source(struct
>  > >>  > pcie_device * aerdev,
>  > >>  >                * Correctable error does not need software
>  > >>  > intevention. * No need to go through error recovery process. */
>  > >>  > -             pos = pci_find_aer_capability(dev);
>  > >>  > +             pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >               if (pos)
>  > >>  >                       pci_write_config_dword(dev, pos +
>  > >>  > PCI_ERR_COR_STATUS, info.status);
>  > >>  > @@ -541,7 +516,7 @@ void aer_enable_rootport(struct aer_rpc *rpc)
>  > >>  >       reg16 &= ~(SYSTEM_ERROR_INTR_ON_MESG_MASK);
>  > >>  >       pci_write_config_word(pdev, pos + PCI_EXP_RTCTL, reg16);
>  > >>  >
>  > >>  > -     aer_pos = pci_find_aer_capability(pdev);
>  > >>  > +     aer_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
>  > >>  >       /* Clear error status */
>  > >>  >       pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS,
>  > >>  > &reg32); pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS,
>  > >>  > reg32); @@ -578,7 +553,7 @@ static void disable_root_aer(struct
>  > >>  > aer_rpc *rpc) u32 reg32;
>  > >>  >       int pos;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(pdev);
>  > >>  > +     pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
>  > >>  >       /* Disable Root's interrupt in response to error messages */
>  > >>  >       pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, 0);
>  > >>  >
>  > >>  > @@ -617,7 +592,7 @@ static int get_device_error_info(struct pci_dev
>  > >>  > *dev, struct aer_err_info *info)
>  > >>  >  {
>  > >>  >       int pos;
>  > >>  >
>  > >>  > -     pos = pci_find_aer_capability(dev);
>  > >>  > +     pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
>  > >>  >
>  > >>  >       /* The device might not support AER */
>  > >>  >       if (!pos)
>  > >>  > diff --git a/drivers/pci/pcie/portdrv_core.c
>  > >>  > b/drivers/pci/pcie/portdrv_core.c index 18bb811..6cdd41f 100644
>  > >>  > --- a/drivers/pci/pcie/portdrv_core.c
>  > >>  > +++ b/drivers/pci/pcie/portdrv_core.c
>  > >>  > @@ -196,23 +196,10 @@ static int get_port_device_capability(struct
>  > >>  > pci_dev *dev)
>  > >>  >       if (((reg16 >> 4) & PORT_TYPE_MASK) == PCIE_RC_PORT)
>  > >>  >               services |= PCIE_PORT_SERVICE_PME;
>  > >>  >
>  > >>  > -     pos = PCI_CFG_SPACE_SIZE;
>  > >>  > -     while (pos) {
>  > >>  > -             pci_read_config_dword(dev, pos, &reg32);
>  > >>  > -             switch (reg32 & 0xffff) {
>  > >>  > -             case PCI_EXT_CAP_ID_ERR:
>  > >>  > -                     services |= PCIE_PORT_SERVICE_AER;
>  > >>  > -                     pos = reg32 >> 20;
>  > >>  > -                     break;
>  > >>  > -             case PCI_EXT_CAP_ID_VC:
>  > >>  > -                     services |= PCIE_PORT_SERVICE_VC;
>  > >>  > -                     pos = reg32 >> 20;
>  > >>  > -                     break;
>  > >>  > -             default:
>  > >>  > -                     pos = 0;
>  > >>  > -                     break;
>  > >>  > -             }
>  > >>  > -     }
>  > >>  > +     if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR))
>  > >>  > +             services |= PCIE_PORT_SERVICE_AER;
>  > >>  > +     if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC))
>  > >>  > +             services |= PCIE_PORT_SERVICE_VC;
>  > >>  >
>  > >>  >       return services;
>  > >>  >  }
>  > >>  > diff --git a/drivers/scsi/qla2xxx/qla_os.c
>  > >>  > b/drivers/scsi/qla2xxx/qla_os.c index 26afe44..7e79835 100644
>  > >>  > --- a/drivers/scsi/qla2xxx/qla_os.c
>  > >>  > +++ b/drivers/scsi/qla2xxx/qla_os.c
>  > >>  > @@ -1567,9 +1567,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const
>  > >>  > struct pci_device_id *id)
>  > >>  >                       goto probe_out;
>  > >>  >       }
>  > >>  >
>  > >>  > -     if (pci_find_aer_capability(pdev))
>  > >>  > -             if (pci_enable_pcie_error_reporting(pdev))
>  > >>  > -                     goto probe_out;
>  > >>  > +     if (!pci_enable_pcie_error_reporting(pdev))
>  > >>  > +             printk(KERN_INFO "qla2xxx: Enabled error reporting\n");
>  > >>  >
>  > >>  >       host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
>  > >>  >       if (host == NULL) {
>
>
>
>
> --
>
> Jesse Barnes, Intel Open Source Technology Center
>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux