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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.18.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:04 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 1/9] PCI: Make pcim_iounmap_region() a public function Date: Wed, 21 Aug 2024 09:18:34 +0200 Message-ID: <20240821071842.8591-3-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The function pcim_iounmap_regions() is problematic because it uses a bitmask mechanism to release / iounmap multiple BARs at once. It, thus, prevents getting rid of the problematic iomap table mechanism which was deprecated in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Make pcim_iounmap_region() public as the successor of pcim_iounmap_regions(). Signed-off-by: Philipp Stanner Reviewed-by: Damien Le Moal --- drivers/pci/devres.c | 3 ++- include/linux/pci.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/devres.c b/drivers/pci/devres.c index b97589e99fad..4dbba385e6b4 100644 --- a/drivers/pci/devres.c +++ b/drivers/pci/devres.c @@ -771,7 +771,7 @@ EXPORT_SYMBOL(pcim_iomap_region); * Unmap a BAR and release its region manually. Only pass BARs that were * previously mapped by pcim_iomap_region(). */ -static void pcim_iounmap_region(struct pci_dev *pdev, int bar) +void pcim_iounmap_region(struct pci_dev *pdev, int bar) { struct pcim_addr_devres res_searched; @@ -782,6 +782,7 @@ static void pcim_iounmap_region(struct pci_dev *pdev, int bar) devres_release(&pdev->dev, pcim_addr_resource_release, pcim_addr_resources_match, &res_searched); } +EXPORT_SYMBOL(pcim_iounmap_region); /** * pcim_iomap_regions - Request and iomap PCI BARs (DEPRECATED) diff --git a/include/linux/pci.h b/include/linux/pci.h index 01b9f1a351be..9625d8a7b655 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2297,6 +2297,7 @@ void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); int pcim_request_region(struct pci_dev *pdev, int bar, const char *name); void __iomem *pcim_iomap_region(struct pci_dev *pdev, int bar, const char *name); +void pcim_iounmap_region(struct pci_dev *pdev, int bar); int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:09 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 2/9] fpga/dfl-pci.c: Replace deprecated PCI functions Date: Wed, 21 Aug 2024 09:18:35 +0200 Message-ID: <20240821071842.8591-4-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 pcim_iomap_regions() and pcim_iomap_table() have been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Port dfl-pci.c to the successor, pcim_iomap_region(). Consistently, replace pcim_iounmap_regions() with pcim_iounmap_region(). Signed-off-by: Philipp Stanner --- drivers/fpga/dfl-pci.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/fpga/dfl-pci.c b/drivers/fpga/dfl-pci.c index 80cac3a5f976..2099c497feec 100644 --- a/drivers/fpga/dfl-pci.c +++ b/drivers/fpga/dfl-pci.c @@ -41,10 +41,13 @@ struct cci_drvdata { static void __iomem *cci_pci_ioremap_bar0(struct pci_dev *pcidev) { - if (pcim_iomap_regions(pcidev, BIT(0), DRV_NAME)) + void __iomem *bar0; + + bar0 = pcim_iomap_region(pcidev, 0, DRV_NAME); + if (IS_ERR(bar0)) return NULL; - return pcim_iomap_table(pcidev)[0]; + return bar0; } static int cci_pci_alloc_irq(struct pci_dev *pcidev) @@ -296,7 +299,7 @@ static int find_dfls_by_default(struct pci_dev *pcidev, } /* release I/O mappings for next step enumeration */ - pcim_iounmap_regions(pcidev, BIT(0)); + pcim_iounmap_region(pcidev, 0); return ret; } From patchwork Wed Aug 21 07:18:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Stanner X-Patchwork-Id: 1974673 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:14 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 3/9] block: mtip32xx: Replace deprecated PCI functions Date: Wed, 21 Aug 2024 09:18:36 +0200 Message-ID: <20240821071842.8591-5-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 pcim_iomap_regions() and pcim_iomap_table() have been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). In mtip32xx, these functions can easily be replaced by their respective successors, pcim_request_region() and pcim_iomap(). Moreover, the driver's calls to pcim_iounmap_regions() in probe()'s error path and in remove() are not necessary. Cleanup can be performed by PCI devres automatically. Replace pcim_iomap_regions() and pcim_iomap_table(). Remove the calls to pcim_iounmap_regions(). Signed-off-by: Philipp Stanner --- drivers/block/mtip32xx/mtip32xx.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index c6ef0546ffc9..fcd5806621c7 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -2716,7 +2716,9 @@ static int mtip_hw_init(struct driver_data *dd) int rv; unsigned long timeout, timetaken; - dd->mmio = pcim_iomap_table(dd->pdev)[MTIP_ABAR]; + dd->mmio = pcim_iomap(dd->pdev, MTIP_ABAR, 0); + if (!dd->mmio) + return -ENOMEM; mtip_detect_product(dd); if (dd->product_type == MTIP_PRODUCT_UNKNOWN) { @@ -3726,9 +3728,9 @@ static int mtip_pci_probe(struct pci_dev *pdev, } /* Map BAR5 to memory. */ - rv = pcim_iomap_regions(pdev, 1 << MTIP_ABAR, MTIP_DRV_NAME); + rv = pcim_request_region(pdev, MTIP_ABAR, MTIP_DRV_NAME); if (rv < 0) { - dev_err(&pdev->dev, "Unable to map regions\n"); + dev_err(&pdev->dev, "Unable to request regions\n"); goto iomap_err; } @@ -3849,8 +3851,6 @@ static int mtip_pci_probe(struct pci_dev *pdev, drop_cpu(dd->work[2].cpu_binding); } setmask_err: - pcim_iounmap_regions(pdev, 1 << MTIP_ABAR); - iomap_err: kfree(dd); pci_set_drvdata(pdev, NULL); @@ -3925,7 +3925,6 @@ static void mtip_pci_remove(struct pci_dev *pdev) pci_disable_msi(pdev); - pcim_iounmap_regions(pdev, 1 << MTIP_ABAR); pci_set_drvdata(pdev, NULL); put_disk(dd->disk); From patchwork Wed Aug 21 07:18:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Stanner X-Patchwork-Id: 1974674 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=AEJGcVCM; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:4601:e00::3; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:20 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev, Bartosz Golaszewski Subject: [PATCH v2 4/9] gpio: Replace deprecated PCI functions Date: Wed, 21 Aug 2024 09:18:37 +0200 Message-ID: <20240821071842.8591-6-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 pcim_iomap_regions() and pcim_iomap_table() have been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Replace those functions with calls to pcim_iomap_region(). Signed-off-by: Philipp Stanner Reviewed-by: Andy Shevchenko Acked-by: Bartosz Golaszewski --- drivers/gpio/gpio-merrifield.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-merrifield.c b/drivers/gpio/gpio-merrifield.c index 421d7e3a6c66..274afcba31e6 100644 --- a/drivers/gpio/gpio-merrifield.c +++ b/drivers/gpio/gpio-merrifield.c @@ -78,24 +78,24 @@ static int mrfld_gpio_probe(struct pci_dev *pdev, const struct pci_device_id *id if (retval) return retval; - retval = pcim_iomap_regions(pdev, BIT(1) | BIT(0), pci_name(pdev)); - if (retval) - return dev_err_probe(dev, retval, "I/O memory mapping error\n"); - - base = pcim_iomap_table(pdev)[1]; + base = pcim_iomap_region(pdev, 1, pci_name(pdev)); + if (IS_ERR(base)) + return dev_err_probe(dev, PTR_ERR(base), "I/O memory mapping error\n"); irq_base = readl(base + 0 * sizeof(u32)); gpio_base = readl(base + 1 * sizeof(u32)); /* Release the IO mapping, since we already get the info from BAR1 */ - pcim_iounmap_regions(pdev, BIT(1)); + pcim_iounmap_region(pdev, 1); priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = dev; - priv->reg_base = pcim_iomap_table(pdev)[0]; + priv->reg_base = pcim_iomap_region(pdev, 0, pci_name(pdev)); + if (IS_ERR(priv->reg_base)) + return dev_err_probe(dev, PTR_ERR(base), "I/O memory mapping error\n"); priv->pin_info.pin_ranges = mrfld_gpio_ranges; priv->pin_info.nranges = ARRAY_SIZE(mrfld_gpio_ranges); From patchwork Wed Aug 21 07:18:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Stanner X-Patchwork-Id: 1974677 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=fcCh/7jo; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:25 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 5/9] ethernet: cavium: Replace deprecated PCI functions Date: Wed, 21 Aug 2024 09:18:38 +0200 Message-ID: <20240821071842.8591-7-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 pcim_iomap_regions() and pcim_iomap_table() have been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Replace these functions with the function pcim_iomap_region(). Signed-off-by: Philipp Stanner --- drivers/net/ethernet/cavium/common/cavium_ptp.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/cavium/common/cavium_ptp.c b/drivers/net/ethernet/cavium/common/cavium_ptp.c index 9fd717b9cf69..1849c62cde1d 100644 --- a/drivers/net/ethernet/cavium/common/cavium_ptp.c +++ b/drivers/net/ethernet/cavium/common/cavium_ptp.c @@ -239,11 +239,11 @@ static int cavium_ptp_probe(struct pci_dev *pdev, if (err) goto error_free; - err = pcim_iomap_regions(pdev, 1 << PCI_PTP_BAR_NO, pci_name(pdev)); - if (err) + clock->reg_base = pcim_iomap_region(pdev, PCI_PTP_BAR_NO, pci_name(pdev)); + if (IS_ERR(clock->reg_base)) { + err = PTR_ERR(clock->reg_base); goto error_free; - - clock->reg_base = pcim_iomap_table(pdev)[PCI_PTP_BAR_NO]; + } spin_lock_init(&clock->spin_lock); @@ -292,7 +292,7 @@ static int cavium_ptp_probe(struct pci_dev *pdev, clock_cfg = readq(clock->reg_base + PTP_CLOCK_CFG); clock_cfg &= ~PTP_CLOCK_CFG_PTP_EN; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:30 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 6/9] ethernet: stmicro: Simplify PCI devres usage Date: Wed, 21 Aug 2024 09:18:39 +0200 Message-ID: <20240821071842.8591-8-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 stmicro uses PCI devres in the wrong way. Resources requested through pcim_* functions don't need to be cleaned up manually in the remove() callback or in the error unwind path of a probe() function. Moreover, there is an unnecessary loop which only requests and ioremaps BAR 0, but iterates over all BARs nevertheless. Furthermore, pcim_iomap_regions() and pcim_iomap_table() have been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"). Replace these functions with pcim_iomap_region(). Remove the unnecessary manual pcim_* cleanup calls. Remove the unnecessary loop over all BARs. Signed-off-by: Philipp Stanner --- .../ethernet/stmicro/stmmac/dwmac-loongson.c | 25 +++++-------------- .../net/ethernet/stmicro/stmmac/stmmac_pci.c | 18 +++++-------- 2 files changed, 12 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c index 9e40c28d453a..5d42a9fad672 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -50,7 +50,7 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id struct plat_stmmacenet_data *plat; struct stmmac_resources res; struct device_node *np; - int ret, i, phy_mode; + int ret, phy_mode; np = dev_of_node(&pdev->dev); @@ -88,14 +88,11 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id goto err_put_node; } - /* Get the base address of device */ - for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (pci_resource_len(pdev, i) == 0) - continue; - ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); - if (ret) - goto err_disable_device; - break; + memset(&res, 0, sizeof(res)); + res.addr = pcim_iomap_region(pdev, 0, pci_name(pdev)); + if (IS_ERR(res.addr)) { + ret = PTR_ERR(res.addr); + goto err_disable_device; } plat->bus_id = of_alias_get_id(np, "ethernet"); @@ -116,8 +113,6 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id loongson_default_data(plat); pci_enable_msi(pdev); - memset(&res, 0, sizeof(res)); - res.addr = pcim_iomap_table(pdev)[0]; res.irq = of_irq_get_byname(np, "macirq"); if (res.irq < 0) { @@ -158,18 +153,10 @@ static void loongson_dwmac_remove(struct pci_dev *pdev) { struct net_device *ndev = dev_get_drvdata(&pdev->dev); struct stmmac_priv *priv = netdev_priv(ndev); - int i; of_node_put(priv->plat->mdio_node); stmmac_dvr_remove(&pdev->dev); - for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (pci_resource_len(pdev, i) == 0) - continue; - pcim_iounmap_regions(pdev, BIT(i)); - break; - } - pci_disable_msi(pdev); pci_disable_device(pdev); } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c index 352b01678c22..f89a8a54c4e8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c @@ -188,11 +188,11 @@ static int stmmac_pci_probe(struct pci_dev *pdev, return ret; } - /* Get the base address of device */ + /* Request the base address BAR of device */ for (i = 0; i < PCI_STD_NUM_BARS; i++) { if (pci_resource_len(pdev, i) == 0) continue; - ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev)); + ret = pcim_request_region(pdev, i, pci_name(pdev)); if (ret) return ret; break; @@ -205,7 +205,10 @@ static int stmmac_pci_probe(struct pci_dev *pdev, return ret; memset(&res, 0, sizeof(res)); - res.addr = pcim_iomap_table(pdev)[i]; + /* Get the base address of device */ + res.addr = pcim_iomap(pdev, i, 0); + if (!res.addr) + return -ENOMEM; res.wol_irq = pdev->irq; res.irq = pdev->irq; @@ -231,16 +234,7 @@ static int stmmac_pci_probe(struct pci_dev *pdev, */ static void stmmac_pci_remove(struct pci_dev *pdev) { - int i; - stmmac_dvr_remove(&pdev->dev); - - for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (pci_resource_len(pdev, i) == 0) - continue; - pcim_iounmap_regions(pdev, BIT(i)); - break; - } } static int __maybe_unused stmmac_pci_suspend(struct device *dev) From patchwork Wed Aug 21 07:18:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Stanner X-Patchwork-Id: 1974680 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=Z05fVVsE; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=139.178.88.99; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:36 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev, stable@vger.kernel.org, Christophe JAILLET Subject: [PATCH v2 7/9] vdpa: solidrun: Fix potential UB bug with devres Date: Wed, 21 Aug 2024 09:18:40 +0200 Message-ID: <20240821071842.8591-9-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In psnet_open_pf_bar() a string later passed to pcim_iomap_regions() is placed on the stack. Neither pcim_iomap_regions() nor the functions it calls copy that string. Should the string later ever be used, this, consequently, causes undefined behavior since the stack frame will by then have disappeared. Fix the bug by allocating the string on the heap through devm_kasprintf(). Cc: stable@vger.kernel.org # v6.3 Fixes: 51a8f9d7f587 ("virtio: vdpa: new SolidNET DPU driver.") Reported-by: Christophe JAILLET Closes: https://lore.kernel.org/all/74e9109a-ac59-49e2-9b1d-d825c9c9f891@wanadoo.fr/ Suggested-by: Andy Shevchenko Signed-off-by: Philipp Stanner --- drivers/vdpa/solidrun/snet_main.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c index 99428a04068d..4d42a05d70fc 100644 --- a/drivers/vdpa/solidrun/snet_main.c +++ b/drivers/vdpa/solidrun/snet_main.c @@ -555,7 +555,7 @@ static const struct vdpa_config_ops snet_config_ops = { static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet) { - char name[50]; + char *name; int ret, i, mask = 0; /* We don't know which BAR will be used to communicate.. * We will map every bar with len > 0. @@ -573,7 +573,10 @@ static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet) return -ENODEV; } - snprintf(name, sizeof(name), "psnet[%s]-bars", pci_name(pdev)); + name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "psnet[%s]-bars", pci_name(pdev)); 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:41 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 8/9] vdap: solidrun: Replace deprecated PCI functions Date: Wed, 21 Aug 2024 09:18:41 +0200 Message-ID: <20240821071842.8591-10-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 solidrun utilizes pcim_iomap_regions(), which has been deprecated by the PCI subsystem in commit e354bb84a4c1 ("PCI: Deprecate pcim_iomap_table(), pcim_iomap_regions_request_all()"), among other things because it forces usage of quite a complicated bitmask mechanism. The bitmask handling code can entirely be removed by replacing pcim_iomap_regions() and pcim_iomap_table(). Replace pcim_iomap_regions() and pcim_iomap_table() with pci_iomap_region(). Signed-off-by: Philipp Stanner --- drivers/vdpa/solidrun/snet_main.c | 53 +++++++++++-------------------- 1 file changed, 18 insertions(+), 35 deletions(-) diff --git a/drivers/vdpa/solidrun/snet_main.c b/drivers/vdpa/solidrun/snet_main.c index 4d42a05d70fc..ce336f261649 100644 --- a/drivers/vdpa/solidrun/snet_main.c +++ b/drivers/vdpa/solidrun/snet_main.c @@ -556,36 +556,25 @@ static const struct vdpa_config_ops snet_config_ops = { static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet) { char *name; - int ret, i, mask = 0; - /* We don't know which BAR will be used to communicate.. - * We will map every bar with len > 0. - * - * Later, we will discover the BAR and unmap all other BARs. - */ - for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (pci_resource_len(pdev, i)) - mask |= (1 << i); - } - - /* No BAR can be used.. */ - if (!mask) { - SNET_ERR(pdev, "Failed to find a PCI BAR\n"); - return -ENODEV; - } + unsigned short i; name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "psnet[%s]-bars", pci_name(pdev)); if (!name) return -ENOMEM; - ret = pcim_iomap_regions(pdev, mask, name); - if (ret) { - SNET_ERR(pdev, "Failed to request and map PCI BARs\n"); - return ret; - } - + /* We don't know which BAR will be used to communicate.. + * We will map every bar with len > 0. + * + * Later, we will discover the BAR and unmap all other BARs. + */ for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (mask & (1 << i)) - psnet->bars[i] = pcim_iomap_table(pdev)[i]; + if (!pci_resource_len(pdev, i)) + continue; + psnet->bars[i] = pcim_iomap_region(pdev, i, name); + if (IS_ERR(psnet->bars[i])) { + SNET_ERR(pdev, "Failed to request and map PCI BARs\n"); + return PTR_ERR(psnet->bars[i]); + } } return 0; @@ -594,18 +583,15 @@ static int psnet_open_pf_bar(struct pci_dev *pdev, struct psnet *psnet) static int snet_open_vf_bar(struct pci_dev *pdev, struct snet *snet) { char name[50]; - int ret; snprintf(name, sizeof(name), "snet[%s]-bar", pci_name(pdev)); /* Request and map BAR */ - ret = pcim_iomap_regions(pdev, BIT(snet->psnet->cfg.vf_bar), name); - if (ret) { + snet->bar = pcim_iomap_region(pdev, snet->psnet->cfg.vf_bar, name); + if (IS_ERR(snet->bar)) { SNET_ERR(pdev, "Failed to request and map PCI BAR for a VF\n"); - return ret; + return PTR_ERR(snet->bar); } - snet->bar = pcim_iomap_table(pdev)[snet->psnet->cfg.vf_bar]; - return 0; } @@ -653,15 +639,12 @@ static int psnet_detect_bar(struct psnet *psnet, u32 off) static void psnet_unmap_unused_bars(struct pci_dev *pdev, struct psnet *psnet) { - int i, mask = 0; + int i; for (i = 0; i < PCI_STD_NUM_BARS; i++) { if (psnet->bars[i] && i != psnet->barno) - mask |= (1 << i); + pcim_iounmap_region(pdev, i); } - - if (mask) - pcim_iounmap_regions(pdev, mask); } /* Read SNET config from PCI BAR */ From patchwork Wed Aug 21 07:18:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Stanner X-Patchwork-Id: 1974685 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a4ff013ef2sm596207885a.11.2024.08.21.00.19.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 00:19:46 -0700 (PDT) From: Philipp Stanner To: Jonathan Corbet , Jens Axboe , Wu Hao , Tom Rix , Moritz Fischer , Xu Yilun , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Bjorn Helgaas , Alvaro Karsz , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Richard Cochran , Mark Brown , David Lechner , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Philipp Stanner , Damien Le Moal , Hannes Reinecke , Keith Busch Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-fpga@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, virtualization@lists.linux.dev Subject: [PATCH v2 9/9] PCI: Remove pcim_iounmap_regions() Date: Wed, 21 Aug 2024 09:18:42 +0200 Message-ID: <20240821071842.8591-11-pstanner@redhat.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240821071842.8591-2-pstanner@redhat.com> References: <20240821071842.8591-2-pstanner@redhat.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 All users of pcim_iounmap_regions() have been removed by now. Remove pcim_iounmap_regions(). Signed-off-by: Philipp Stanner Reviewed-by: Andy Shevchenko Reviewed-by: Damien Le Moal --- .../driver-api/driver-model/devres.rst | 1 - drivers/pci/devres.c | 21 ------------------- include/linux/pci.h | 1 - 3 files changed, 23 deletions(-) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index ac9ee7441887..525f08694984 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -397,7 +397,6 @@ PCI pcim_iomap_regions_request_all() : do request_region() on all and iomap() on multiple BARs pcim_iomap_table() : array of mapped addresses indexed by BAR pcim_iounmap() : do iounmap() on a single BAR - pcim_iounmap_regions() : do iounmap() and release_region() on multiple BARs pcim_pin_device() : keep PCI device enabled after release pcim_set_mwi() : enable Memory-Write-Invalidate PCI transaction diff --git a/drivers/pci/devres.c b/drivers/pci/devres.c index 4dbba385e6b4..022c0bb243ad 100644 --- a/drivers/pci/devres.c +++ b/drivers/pci/devres.c @@ -1013,27 +1013,6 @@ int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, } EXPORT_SYMBOL(pcim_iomap_regions_request_all); -/** - * pcim_iounmap_regions - Unmap and release PCI BARs - * @pdev: PCI device to map IO resources for - * @mask: Mask of BARs to unmap and release - * - * Unmap and release regions specified by @mask. - */ -void pcim_iounmap_regions(struct pci_dev *pdev, int mask) -{ - int i; - - for (i = 0; i < PCI_STD_NUM_BARS; i++) { - if (!mask_contains_bar(mask, i)) - continue; - - pcim_iounmap_region(pdev, i); - pcim_remove_bar_from_legacy_table(pdev, i); - } -} -EXPORT_SYMBOL(pcim_iounmap_regions); - /** * pcim_iomap_range - Create a ranged __iomap mapping within a PCI BAR * @pdev: PCI device to map IO resources for diff --git a/include/linux/pci.h b/include/linux/pci.h index 9625d8a7b655..6c60f063c672 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2301,7 +2301,6 @@ void pcim_iounmap_region(struct pci_dev *pdev, int bar); int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, const char *name); -void pcim_iounmap_regions(struct pci_dev *pdev, int mask); void __iomem *pcim_iomap_range(struct pci_dev *pdev, int bar, unsigned long offset, unsigned long len);