From: Christoph Hellwig <hch@lst.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Gavin Li <git@thegavinli.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Minas Harutyunyan <hminas@synopsys.com>,
Alan Stern <stern@rowland.harvard.edu>,
Geoff Levand <geoff@infradead.org>,
Michal Simek <michal.simek@xilinx.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Olav Kongas <ok@artecdesign.ee>,
Tony Prisk <linux@prisktech.co.nz>,
Mathias Nyman <mathias.nyman@intel.com>, Bin Liu <b-liu@ti.com>,
linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 6/6] driver core: initialize a default DMA mask for platform device
Date: Sun, 11 Aug 2019 10:05:20 +0200 [thread overview]
Message-ID: <20190811080520.21712-7-hch@lst.de> (raw)
In-Reply-To: <20190811080520.21712-1-hch@lst.de>
We still treat devices without a DMA mask as defaulting to 32-bits for
both mask, but a few releases ago we've started warning about such
cases, as they require special cases to work around this sloppyness.
Add a dma_mask field to struct platform_object so that we can initialize
the dma_mask pointer in struct device and initialize both masks to
32-bits by default. Architectures can still override this in
arch_setup_pdev_archdata if needed.
Note that the code looks a little odd with the various conditionals
because we have to support platform_device structures that are
statically allocated.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/base/platform.c | 15 +++++++++++++--
include/linux/platform_device.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ec974ba9c0c4..b216fcb0a8af 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -264,6 +264,17 @@ struct platform_object {
char name[];
};
+static void setup_pdev_archdata(struct platform_device *pdev)
+{
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dma_mask)
+ pdev->dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &pdev->dma_mask;
+ arch_setup_pdev_archdata(pdev);
+};
+
/**
* platform_device_put - destroy a platform device
* @pdev: platform device to free
@@ -310,7 +321,7 @@ struct platform_device *platform_device_alloc(const char *name, int id)
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
- arch_setup_pdev_archdata(&pa->pdev);
+ setup_pdev_archdata(&pa->pdev);
}
return pa ? &pa->pdev : NULL;
@@ -512,7 +523,7 @@ EXPORT_SYMBOL_GPL(platform_device_del);
int platform_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);
- arch_setup_pdev_archdata(pdev);
+ setup_pdev_archdata(pdev);
return platform_device_add(pdev);
}
EXPORT_SYMBOL_GPL(platform_device_register);
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9bc36b589827..a2abde2aef25 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,6 +24,7 @@ struct platform_device {
int id;
bool id_auto;
struct device dev;
+ u64 dma_mask;
u32 num_resources;
struct resource *resource;
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: linux-arch@vger.kernel.org, Olav Kongas <ok@artecdesign.ee>,
Gavin Li <git@thegavinli.com>,
linuxppc-dev@lists.ozlabs.org,
Mathias Nyman <mathias.nyman@intel.com>,
Geoff Levand <geoff@infradead.org>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-usb@vger.kernel.org, Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org, Tony Prisk <linux@prisktech.co.nz>,
iommu@lists.linux-foundation.org,
Alan Stern <stern@rowland.harvard.edu>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Minas Harutyunyan <hminas@synopsys.com>,
Shawn Guo <shawnguo@kernel.org>, Bin Liu <b-liu@ti.com>,
linux-arm-kernel@lists.infradead.org,
Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [PATCH 6/6] driver core: initialize a default DMA mask for platform device
Date: Sun, 11 Aug 2019 10:05:20 +0200 [thread overview]
Message-ID: <20190811080520.21712-7-hch@lst.de> (raw)
In-Reply-To: <20190811080520.21712-1-hch@lst.de>
We still treat devices without a DMA mask as defaulting to 32-bits for
both mask, but a few releases ago we've started warning about such
cases, as they require special cases to work around this sloppyness.
Add a dma_mask field to struct platform_object so that we can initialize
the dma_mask pointer in struct device and initialize both masks to
32-bits by default. Architectures can still override this in
arch_setup_pdev_archdata if needed.
Note that the code looks a little odd with the various conditionals
because we have to support platform_device structures that are
statically allocated.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/base/platform.c | 15 +++++++++++++--
include/linux/platform_device.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ec974ba9c0c4..b216fcb0a8af 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -264,6 +264,17 @@ struct platform_object {
char name[];
};
+static void setup_pdev_archdata(struct platform_device *pdev)
+{
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dma_mask)
+ pdev->dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &pdev->dma_mask;
+ arch_setup_pdev_archdata(pdev);
+};
+
/**
* platform_device_put - destroy a platform device
* @pdev: platform device to free
@@ -310,7 +321,7 @@ struct platform_device *platform_device_alloc(const char *name, int id)
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
- arch_setup_pdev_archdata(&pa->pdev);
+ setup_pdev_archdata(&pa->pdev);
}
return pa ? &pa->pdev : NULL;
@@ -512,7 +523,7 @@ EXPORT_SYMBOL_GPL(platform_device_del);
int platform_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);
- arch_setup_pdev_archdata(pdev);
+ setup_pdev_archdata(pdev);
return platform_device_add(pdev);
}
EXPORT_SYMBOL_GPL(platform_device_register);
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9bc36b589827..a2abde2aef25 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,6 +24,7 @@ struct platform_device {
int id;
bool id_auto;
struct device dev;
+ u64 dma_mask;
u32 num_resources;
struct resource *resource;
--
2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: linux-arch@vger.kernel.org, Olav Kongas <ok@artecdesign.ee>,
Gavin Li <git@thegavinli.com>,
linuxppc-dev@lists.ozlabs.org,
Mathias Nyman <mathias.nyman@intel.com>,
Geoff Levand <geoff@infradead.org>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-usb@vger.kernel.org, Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org, Tony Prisk <linux@prisktech.co.nz>,
iommu@lists.linux-foundation.org,
Alan Stern <stern@rowland.harvard.edu>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Minas Harutyunyan <hminas@synopsys.com>,
Shawn Guo <shawnguo@kernel.org>, Bin Liu <b-liu@ti.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/6] driver core: initialize a default DMA mask for platform device
Date: Sun, 11 Aug 2019 10:05:20 +0200 [thread overview]
Message-ID: <20190811080520.21712-7-hch@lst.de> (raw)
In-Reply-To: <20190811080520.21712-1-hch@lst.de>
We still treat devices without a DMA mask as defaulting to 32-bits for
both mask, but a few releases ago we've started warning about such
cases, as they require special cases to work around this sloppyness.
Add a dma_mask field to struct platform_object so that we can initialize
the dma_mask pointer in struct device and initialize both masks to
32-bits by default. Architectures can still override this in
arch_setup_pdev_archdata if needed.
Note that the code looks a little odd with the various conditionals
because we have to support platform_device structures that are
statically allocated.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/base/platform.c | 15 +++++++++++++--
include/linux/platform_device.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ec974ba9c0c4..b216fcb0a8af 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -264,6 +264,17 @@ struct platform_object {
char name[];
};
+static void setup_pdev_archdata(struct platform_device *pdev)
+{
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dma_mask)
+ pdev->dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &pdev->dma_mask;
+ arch_setup_pdev_archdata(pdev);
+};
+
/**
* platform_device_put - destroy a platform device
* @pdev: platform device to free
@@ -310,7 +321,7 @@ struct platform_device *platform_device_alloc(const char *name, int id)
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
- arch_setup_pdev_archdata(&pa->pdev);
+ setup_pdev_archdata(&pa->pdev);
}
return pa ? &pa->pdev : NULL;
@@ -512,7 +523,7 @@ EXPORT_SYMBOL_GPL(platform_device_del);
int platform_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);
- arch_setup_pdev_archdata(pdev);
+ setup_pdev_archdata(pdev);
return platform_device_add(pdev);
}
EXPORT_SYMBOL_GPL(platform_device_register);
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9bc36b589827..a2abde2aef25 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,6 +24,7 @@ struct platform_device {
int id;
bool id_auto;
struct device dev;
+ u64 dma_mask;
u32 num_resources;
struct resource *resource;
--
2.20.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: linux-arch@vger.kernel.org, Olav Kongas <ok@artecdesign.ee>,
Gavin Li <git@thegavinli.com>,
linuxppc-dev@lists.ozlabs.org,
Mathias Nyman <mathias.nyman@intel.com>,
Geoff Levand <geoff@infradead.org>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
linux-usb@vger.kernel.org, Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org, Tony Prisk <linux@prisktech.co.nz>,
iommu@lists.linux-foundation.org,
Alan Stern <stern@rowland.harvard.edu>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Minas Harutyunyan <hminas@synopsys.com>,
Shawn Guo <shawnguo@kernel.org>, Bin Liu <b-liu@ti.com>,
linux-arm-kernel@lists.infradead.org,
Laurentiu Tudor <laurentiu.tudor@nxp.com>
Subject: [PATCH 6/6] driver core: initialize a default DMA mask for platform device
Date: Sun, 11 Aug 2019 10:05:20 +0200 [thread overview]
Message-ID: <20190811080520.21712-7-hch@lst.de> (raw)
In-Reply-To: <20190811080520.21712-1-hch@lst.de>
We still treat devices without a DMA mask as defaulting to 32-bits for
both mask, but a few releases ago we've started warning about such
cases, as they require special cases to work around this sloppyness.
Add a dma_mask field to struct platform_object so that we can initialize
the dma_mask pointer in struct device and initialize both masks to
32-bits by default. Architectures can still override this in
arch_setup_pdev_archdata if needed.
Note that the code looks a little odd with the various conditionals
because we have to support platform_device structures that are
statically allocated.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/base/platform.c | 15 +++++++++++++--
include/linux/platform_device.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ec974ba9c0c4..b216fcb0a8af 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -264,6 +264,17 @@ struct platform_object {
char name[];
};
+static void setup_pdev_archdata(struct platform_device *pdev)
+{
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dma_mask)
+ pdev->dma_mask = DMA_BIT_MASK(32);
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &pdev->dma_mask;
+ arch_setup_pdev_archdata(pdev);
+};
+
/**
* platform_device_put - destroy a platform device
* @pdev: platform device to free
@@ -310,7 +321,7 @@ struct platform_device *platform_device_alloc(const char *name, int id)
pa->pdev.id = id;
device_initialize(&pa->pdev.dev);
pa->pdev.dev.release = platform_device_release;
- arch_setup_pdev_archdata(&pa->pdev);
+ setup_pdev_archdata(&pa->pdev);
}
return pa ? &pa->pdev : NULL;
@@ -512,7 +523,7 @@ EXPORT_SYMBOL_GPL(platform_device_del);
int platform_device_register(struct platform_device *pdev)
{
device_initialize(&pdev->dev);
- arch_setup_pdev_archdata(pdev);
+ setup_pdev_archdata(pdev);
return platform_device_add(pdev);
}
EXPORT_SYMBOL_GPL(platform_device_register);
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9bc36b589827..a2abde2aef25 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -24,6 +24,7 @@ struct platform_device {
int id;
bool id_auto;
struct device dev;
+ u64 dma_mask;
u32 num_resources;
struct resource *resource;
--
2.20.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-08-11 8:06 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-11 8:05 next take at setting up a dma mask by default for platform devices Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 1/6] usb: don't create dma pools for HCDs with a localmem_pool Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 2/6] usb: add a hcd_uses_dma helper Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 3/6] usb: add a HCD_DMA flag instead of guestimating DMA capabilities Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-12 11:57 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 4/6] usb/max3421: remove the dummy {un,}map_urb_for_dma methods Christoph Hellwig
2019-08-11 8:05 ` [PATCH 4/6] usb/max3421: remove the dummy {un, }map_urb_for_dma methods Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` [PATCH 5/6] dma-mapping: remove is_device_dma_capable Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig [this message]
2019-08-11 8:05 ` [PATCH 6/6] driver core: initialize a default DMA mask for platform device Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-11 8:05 ` Christoph Hellwig
2019-08-14 15:49 ` Robin Murphy
2019-08-14 15:49 ` Robin Murphy
2019-08-14 15:49 ` Robin Murphy
2019-08-14 15:49 ` Robin Murphy
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:32 ` Christoph Hellwig
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:03 ` Greg Kroah-Hartman
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 13:38 ` Christoph Hellwig
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 13:23 ` next take at setting up a dma mask by default for platform devices Greg Kroah-Hartman
2019-08-15 13:23 ` Greg Kroah-Hartman
2019-08-15 13:23 ` Greg Kroah-Hartman
2019-08-15 13:23 ` Greg Kroah-Hartman
2019-08-15 13:23 ` Greg Kroah-Hartman
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 13:25 ` Christoph Hellwig
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:05 ` Greg Kroah-Hartman
2019-08-15 14:39 ` Alan Stern
2019-08-15 14:39 ` Alan Stern
2019-08-15 14:39 ` Alan Stern
2019-08-15 14:39 ` Alan Stern
2019-08-15 14:39 ` Alan Stern
2019-08-15 14:39 ` Alan Stern
2019-08-16 6:24 next take at setting up a dma mask by default for platform devices v2 Christoph Hellwig
2019-08-16 6:24 ` [PATCH 6/6] driver core: initialize a default DMA mask for platform device Christoph Hellwig
2019-08-16 6:24 ` Christoph Hellwig
2019-08-16 6:24 ` Christoph Hellwig
2019-08-16 6:24 ` Christoph Hellwig
2019-08-16 7:39 ` Geert Uytterhoeven
2019-08-16 7:39 ` Geert Uytterhoeven
2019-08-16 7:39 ` Geert Uytterhoeven
2019-08-16 7:39 ` Geert Uytterhoeven
2019-08-16 7:39 ` Geert Uytterhoeven
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