From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1icUDP-0001Gd-FF for barebox@lists.infradead.org; Wed, 04 Dec 2019 12:57:14 +0000 From: Ahmad Fatoum Date: Wed, 4 Dec 2019 13:56:56 +0100 Message-Id: <20191204125659.22506-7-a.fatoum@pengutronix.de> In-Reply-To: <20191204125659.22506-1-a.fatoum@pengutronix.de> References: <20191204125659.22506-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 6/9] PCI: copy over some Linux PCI helpers To: barebox@lists.infradead.org Cc: Ahmad Fatoum Linux PCI drivers, like the incoming 8250_pci, make use of these helpers. Port them over from Linux v5.4. Signed-off-by: Ahmad Fatoum --- drivers/pci/bus.c | 26 ++++++++++++++++++++++++++ include/linux/pci.h | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index ac1562330788..251be4fffa6e 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -23,6 +23,32 @@ pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) return NULL; } +/** + * pci_match_id - See if a pci device matches a given pci_id table + * @ids: array of PCI device id structures to search in + * @dev: the PCI device structure to match against. + * + * Used by a driver to check whether a PCI device present in the + * system is in its list of supported devices. Returns the matching + * pci_device_id structure or %NULL if there is no match. + * + * Deprecated, don't use this as it will not catch any dynamic ids + * that a driver might want to check for. + */ +const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, + struct pci_dev *dev) +{ + if (ids) { + while (ids->vendor || ids->subvendor || ids->class_mask) { + if (pci_match_one_device(ids, dev)) + return ids; + ids++; + } + } + return NULL; +} +EXPORT_SYMBOL(pci_match_id); + static int pci_match(struct device_d *dev, struct driver_d *drv) { struct pci_dev *pdev = to_pci_dev(dev); diff --git a/include/linux/pci.h b/include/linux/pci.h index d92d70b6bd68..c742570e3684 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -115,6 +115,17 @@ struct pci_dev { }; #define to_pci_dev(d) container_of(d, struct pci_dev, dev) +#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) +#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) +#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) +#define pci_resource_len(dev,bar) \ + ((pci_resource_start((dev), (bar)) == 0 && \ + pci_resource_end((dev), (bar)) == \ + pci_resource_start((dev), (bar))) ? 0 : \ + \ + (pci_resource_end((dev), (bar)) - \ + pci_resource_start((dev), (bar)) + 1)) + enum { PCI_BUS_RESOURCE_IO = 0, PCI_BUS_RESOURCE_MEM = 1, @@ -210,6 +221,20 @@ struct pci_driver { .vendor = (vend), .device = (dev), \ .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID +/** + * PCI_DEVICE_SUB - macro used to describe a specific PCI device with subsystem + * @vend: the 16 bit PCI Vendor ID + * @dev: the 16 bit PCI Device ID + * @subvend: the 16 bit PCI Subvendor ID + * @subdev: the 16 bit PCI Subdevice ID + * + * This macro is used to create a struct pci_device_id that matches a + * specific device with subsystem information. + */ +#define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ + .vendor = (vend), .device = (dev), \ + .subvendor = (subvend), .subdevice = (subdev) + /** * PCI_DEVICE_CLASS - macro used to describe a specific pci device class * @dev_class: the class, subclass, prog-if triple for this device @@ -350,4 +375,13 @@ enum pci_fixup_pass { void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); +#ifdef CONFIG_PCI +const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, + struct pci_dev *dev); +#else +static inline const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, + struct pci_dev *dev) +{ return NULL; } +#endif + #endif /* LINUX_PCI_H */ -- 2.24.0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox