| Message ID | 3dca6f956342707fb69cba94a771f3d4d2f5f3b4.1674468099.git.lukas@wunner.de |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Collection of DOE material | expand |
Lukas Wunner wrote: > The PCI core has just been amended to create a pci_doe_mb struct for > every DOE instance on device enumeration. CXL (the only in-tree DOE > user so far) has been migrated to use those mailboxes instead of > creating its own. > > That leaves pcim_doe_create_mb() and pci_doe_for_each_off() without any > callers, so drop them. > > pci_doe_supports_prot() is now only used internally, so declare it > static. > > pci_doe_flush_mb() and pci_doe_destroy_mb() are no longer used as > callbacks for devm_add_action(), so refactor them to accept a > struct pci_doe_mb pointer instead of a generic void pointer. > > Because pci_doe_create_mb() is only called on device enumeration, i.e. > before driver binding, the workqueue name never contains a driver name. > So replace dev_driver_string() with dev_bus_name() when generating the > workqueue name. > > Tested-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> > Signed-off-by: Lukas Wunner <lukas@wunner.de> > --- > .clang-format | 1 - > drivers/pci/doe.c | 52 ++++------------------------------------- > include/linux/pci-doe.h | 14 ----------- > 3 files changed, 5 insertions(+), 62 deletions(-) > > diff --git a/.clang-format b/.clang-format > index b62836419ea3..cb1c17c7fcc9 100644 > --- a/.clang-format > +++ b/.clang-format > @@ -520,7 +520,6 @@ ForEachMacros: > - 'of_property_for_each_string' > - 'of_property_for_each_u32' > - 'pci_bus_for_each_resource' > - - 'pci_doe_for_each_off' > - 'pcl_for_each_chunk' > - 'pcl_for_each_segment' > - 'pcm_for_each_format' > diff --git a/drivers/pci/doe.c b/drivers/pci/doe.c > index 06c57af05570..0263bcfdddd8 100644 > --- a/drivers/pci/doe.c > +++ b/drivers/pci/doe.c > @@ -414,10 +414,8 @@ static int pci_doe_cache_protocols(struct pci_doe_mb *doe_mb) > return 0; > } > > -static void pci_doe_flush_mb(void *mb) > +static void pci_doe_flush_mb(struct pci_doe_mb *doe_mb) > { > - struct pci_doe_mb *doe_mb = mb; > - > /* Stop all pending work items from starting */ > set_bit(PCI_DOE_FLAG_DEAD, &doe_mb->flags); > > @@ -457,7 +455,7 @@ static struct pci_doe_mb *pci_doe_create_mb(struct pci_dev *pdev, > xa_init(&doe_mb->prots); > > doe_mb->work_queue = alloc_ordered_workqueue("%s %s DOE [%x]", 0, > - dev_driver_string(&pdev->dev), > + dev_bus_name(&pdev->dev), > pci_name(pdev), > doe_mb->cap_offset); > if (!doe_mb->work_queue) { > @@ -501,56 +499,17 @@ static struct pci_doe_mb *pci_doe_create_mb(struct pci_dev *pdev, > /** > * pci_doe_destroy_mb() - Destroy a DOE mailbox object > * > - * @ptr: Pointer to DOE mailbox > + * @doe_mb: DOE mailbox > * > * Destroy all internal data structures created for the DOE mailbox. > */ > -static void pci_doe_destroy_mb(void *ptr) > +static void pci_doe_destroy_mb(struct pci_doe_mb *doe_mb) > { > - struct pci_doe_mb *doe_mb = ptr; > - > xa_destroy(&doe_mb->prots); > destroy_workqueue(doe_mb->work_queue); > kfree(doe_mb); > } > > -/** > - * pcim_doe_create_mb() - Create a DOE mailbox object > - * > - * @pdev: PCI device to create the DOE mailbox for > - * @cap_offset: Offset of the DOE mailbox > - * > - * Create a single mailbox object to manage the mailbox protocol at the > - * cap_offset specified. The mailbox will automatically be destroyed on > - * driver unbinding from @pdev. > - * > - * RETURNS: created mailbox object on success > - * ERR_PTR(-errno) on failure > - */ > -struct pci_doe_mb *pcim_doe_create_mb(struct pci_dev *pdev, u16 cap_offset) > -{ > - struct pci_doe_mb *doe_mb; > - int rc; > - > - doe_mb = pci_doe_create_mb(pdev, cap_offset); > - if (IS_ERR(doe_mb)) > - return doe_mb; > - > - rc = devm_add_action(&pdev->dev, pci_doe_destroy_mb, doe_mb); > - if (rc) { > - pci_doe_flush_mb(doe_mb); > - pci_doe_destroy_mb(doe_mb); > - return ERR_PTR(rc); > - } > - > - rc = devm_add_action_or_reset(&pdev->dev, pci_doe_flush_mb, doe_mb); > - if (rc) > - return ERR_PTR(rc); > - > - return doe_mb; > -} > -EXPORT_SYMBOL_GPL(pcim_doe_create_mb); > - > /** > * pci_doe_supports_prot() - Return if the DOE instance supports the given > * protocol > @@ -560,7 +519,7 @@ EXPORT_SYMBOL_GPL(pcim_doe_create_mb); > * > * RETURNS: True if the DOE mailbox supports the protocol specified > */ > -bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) > +static bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) > { > unsigned long index; > void *entry; > @@ -575,7 +534,6 @@ bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) > > return false; > } > -EXPORT_SYMBOL_GPL(pci_doe_supports_prot); > > /** > * pci_doe_submit_task() - Submit a task to be processed by the state machine > diff --git a/include/linux/pci-doe.h b/include/linux/pci-doe.h > index d6192ee0ac07..1f14aed4354b 100644 > --- a/include/linux/pci-doe.h > +++ b/include/linux/pci-doe.h > @@ -15,20 +15,6 @@ > > struct pci_doe_mb; > > -/** > - * pci_doe_for_each_off - Iterate each DOE capability > - * @pdev: struct pci_dev to iterate > - * @off: u16 of config space offset of each mailbox capability found > - */ > -#define pci_doe_for_each_off(pdev, off) \ > - for (off = pci_find_next_ext_capability(pdev, off, \ > - PCI_EXT_CAP_ID_DOE); \ > - off > 0; \ > - off = pci_find_next_ext_capability(pdev, off, \ > - PCI_EXT_CAP_ID_DOE)) > - > -struct pci_doe_mb *pcim_doe_create_mb(struct pci_dev *pdev, u16 cap_offset); > -bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type); > struct pci_doe_mb *pci_find_doe_mailbox(struct pci_dev *pdev, u16 vendor, > u8 type); > > -- > 2.39.1 >
On Mon, 23 Jan 2023 11:19:00 +0100 Lukas Wunner <lukas@wunner.de> wrote: > The PCI core has just been amended to create a pci_doe_mb struct for > every DOE instance on device enumeration. CXL (the only in-tree DOE > user so far) has been migrated to use those mailboxes instead of > creating its own. > > That leaves pcim_doe_create_mb() and pci_doe_for_each_off() without any > callers, so drop them. > > pci_doe_supports_prot() is now only used internally, so declare it > static. > > pci_doe_flush_mb() and pci_doe_destroy_mb() are no longer used as > callbacks for devm_add_action(), so refactor them to accept a > struct pci_doe_mb pointer instead of a generic void pointer. > > Because pci_doe_create_mb() is only called on device enumeration, i.e. > before driver binding, the workqueue name never contains a driver name. > So replace dev_driver_string() with dev_bus_name() when generating the > workqueue name. > > Tested-by: Ira Weiny <ira.weiny@intel.com> > Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
diff --git a/.clang-format b/.clang-format index b62836419ea3..cb1c17c7fcc9 100644 --- a/.clang-format +++ b/.clang-format @@ -520,7 +520,6 @@ ForEachMacros: - 'of_property_for_each_string' - 'of_property_for_each_u32' - 'pci_bus_for_each_resource' - - 'pci_doe_for_each_off' - 'pcl_for_each_chunk' - 'pcl_for_each_segment' - 'pcm_for_each_format' diff --git a/drivers/pci/doe.c b/drivers/pci/doe.c index 06c57af05570..0263bcfdddd8 100644 --- a/drivers/pci/doe.c +++ b/drivers/pci/doe.c @@ -414,10 +414,8 @@ static int pci_doe_cache_protocols(struct pci_doe_mb *doe_mb) return 0; } -static void pci_doe_flush_mb(void *mb) +static void pci_doe_flush_mb(struct pci_doe_mb *doe_mb) { - struct pci_doe_mb *doe_mb = mb; - /* Stop all pending work items from starting */ set_bit(PCI_DOE_FLAG_DEAD, &doe_mb->flags); @@ -457,7 +455,7 @@ static struct pci_doe_mb *pci_doe_create_mb(struct pci_dev *pdev, xa_init(&doe_mb->prots); doe_mb->work_queue = alloc_ordered_workqueue("%s %s DOE [%x]", 0, - dev_driver_string(&pdev->dev), + dev_bus_name(&pdev->dev), pci_name(pdev), doe_mb->cap_offset); if (!doe_mb->work_queue) { @@ -501,56 +499,17 @@ static struct pci_doe_mb *pci_doe_create_mb(struct pci_dev *pdev, /** * pci_doe_destroy_mb() - Destroy a DOE mailbox object * - * @ptr: Pointer to DOE mailbox + * @doe_mb: DOE mailbox * * Destroy all internal data structures created for the DOE mailbox. */ -static void pci_doe_destroy_mb(void *ptr) +static void pci_doe_destroy_mb(struct pci_doe_mb *doe_mb) { - struct pci_doe_mb *doe_mb = ptr; - xa_destroy(&doe_mb->prots); destroy_workqueue(doe_mb->work_queue); kfree(doe_mb); } -/** - * pcim_doe_create_mb() - Create a DOE mailbox object - * - * @pdev: PCI device to create the DOE mailbox for - * @cap_offset: Offset of the DOE mailbox - * - * Create a single mailbox object to manage the mailbox protocol at the - * cap_offset specified. The mailbox will automatically be destroyed on - * driver unbinding from @pdev. - * - * RETURNS: created mailbox object on success - * ERR_PTR(-errno) on failure - */ -struct pci_doe_mb *pcim_doe_create_mb(struct pci_dev *pdev, u16 cap_offset) -{ - struct pci_doe_mb *doe_mb; - int rc; - - doe_mb = pci_doe_create_mb(pdev, cap_offset); - if (IS_ERR(doe_mb)) - return doe_mb; - - rc = devm_add_action(&pdev->dev, pci_doe_destroy_mb, doe_mb); - if (rc) { - pci_doe_flush_mb(doe_mb); - pci_doe_destroy_mb(doe_mb); - return ERR_PTR(rc); - } - - rc = devm_add_action_or_reset(&pdev->dev, pci_doe_flush_mb, doe_mb); - if (rc) - return ERR_PTR(rc); - - return doe_mb; -} -EXPORT_SYMBOL_GPL(pcim_doe_create_mb); - /** * pci_doe_supports_prot() - Return if the DOE instance supports the given * protocol @@ -560,7 +519,7 @@ EXPORT_SYMBOL_GPL(pcim_doe_create_mb); * * RETURNS: True if the DOE mailbox supports the protocol specified */ -bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) +static bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) { unsigned long index; void *entry; @@ -575,7 +534,6 @@ bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type) return false; } -EXPORT_SYMBOL_GPL(pci_doe_supports_prot); /** * pci_doe_submit_task() - Submit a task to be processed by the state machine diff --git a/include/linux/pci-doe.h b/include/linux/pci-doe.h index d6192ee0ac07..1f14aed4354b 100644 --- a/include/linux/pci-doe.h +++ b/include/linux/pci-doe.h @@ -15,20 +15,6 @@ struct pci_doe_mb; -/** - * pci_doe_for_each_off - Iterate each DOE capability - * @pdev: struct pci_dev to iterate - * @off: u16 of config space offset of each mailbox capability found - */ -#define pci_doe_for_each_off(pdev, off) \ - for (off = pci_find_next_ext_capability(pdev, off, \ - PCI_EXT_CAP_ID_DOE); \ - off > 0; \ - off = pci_find_next_ext_capability(pdev, off, \ - PCI_EXT_CAP_ID_DOE)) - -struct pci_doe_mb *pcim_doe_create_mb(struct pci_dev *pdev, u16 cap_offset); -bool pci_doe_supports_prot(struct pci_doe_mb *doe_mb, u16 vid, u8 type); struct pci_doe_mb *pci_find_doe_mailbox(struct pci_dev *pdev, u16 vendor, u8 type);