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authorChristoph Hellwig <hch@lst.de>2019-01-29 21:13:04 +0300
committerHelge Deller <deller@gmx.de>2019-02-21 22:37:11 +0300
commit9b8eeab019762fa43c5ffa6e2f8e1039f8e99157 (patch)
treedadc3daa2d3b4213c6ad59c81420e5230f3da777 /drivers/parisc
parent3e803d3ed87738a1d883480d629152c904205d6e (diff)
downloadlinux-9b8eeab019762fa43c5ffa6e2f8e1039f8e99157.tar.xz
parisc: move internal implementation details out of <asm/dma-mapping.h>
Move everything that is not required for the public facing DMA API out of <asm/dma-mapping.h> and into a new drivers/parisc/iommu.h header. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'drivers/parisc')
-rw-r--r--drivers/parisc/ccio-dma.c2
-rw-r--r--drivers/parisc/dino.c1
-rw-r--r--drivers/parisc/eisa.c2
-rw-r--r--drivers/parisc/hppb.c2
-rw-r--r--drivers/parisc/iommu.h51
-rw-r--r--drivers/parisc/lba_pci.c2
-rw-r--r--drivers/parisc/sba_iommu.c2
7 files changed, 62 insertions, 0 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 8d2fc84119c6..b17e81cf77d5 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -55,6 +55,8 @@
#include <asm/hardware.h> /* for register_module() */
#include <asm/parisc-device.h>
+#include "iommu.h"
+
/*
** Choose "ccio" since that's what HP-UX calls it.
** Make it easier for folks to migrate from one to the other :^)
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index dfeea458a789..6f348c75687c 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -59,6 +59,7 @@
#include <asm/hardware.h>
#include "gsc.h"
+#include "iommu.h"
#undef DINO_DEBUG
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 9ff434f354bd..5657a1d3eb2b 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -45,6 +45,8 @@
#include <asm/eisa_bus.h>
#include <asm/eisa_eeprom.h>
+#include "iommu.h"
+
#if 0
#define EISA_DBG(msg, arg...) printk(KERN_DEBUG "eisa: " msg, ## arg)
#else
diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c
index ebc7b617e5d0..3b3481c0d81d 100644
--- a/drivers/parisc/hppb.c
+++ b/drivers/parisc/hppb.c
@@ -23,6 +23,8 @@
#include <asm/hardware.h>
#include <asm/parisc-device.h>
+#include "iommu.h"
+
struct hppb_card {
unsigned long hpa;
struct resource mmio_region;
diff --git a/drivers/parisc/iommu.h b/drivers/parisc/iommu.h
new file mode 100644
index 000000000000..5a38b635e963
--- /dev/null
+++ b/drivers/parisc/iommu.h
@@ -0,0 +1,51 @@
+#ifndef _IOMMU_H
+#define _IOMMU_H 1
+
+#include <linux/pci.h>
+
+struct parisc_device;
+struct ioc;
+
+static inline void *parisc_walk_tree(struct device *dev)
+{
+ struct device *otherdev;
+
+ if (likely(dev->platform_data))
+ return dev->platform_data;
+
+ /* OK, just traverse the bus to find it */
+ for (otherdev = dev->parent;
+ otherdev;
+ otherdev = otherdev->parent) {
+ if (otherdev->platform_data) {
+ dev->platform_data = otherdev->platform_data;
+ break;
+ }
+ }
+
+ return dev->platform_data;
+}
+
+#define GET_IOC(dev) ({ \
+ void *__pdata = parisc_walk_tree(dev); \
+ __pdata ? HBA_DATA(__pdata)->iommu : NULL; \
+})
+
+#ifdef CONFIG_IOMMU_CCIO
+void *ccio_get_iommu(const struct parisc_device *dev);
+int ccio_request_resource(const struct parisc_device *dev,
+ struct resource *res);
+int ccio_allocate_resource(const struct parisc_device *dev,
+ struct resource *res, unsigned long size,
+ unsigned long min, unsigned long max, unsigned long align);
+#else /* !CONFIG_IOMMU_CCIO */
+#define ccio_get_iommu(dev) NULL
+#define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res)
+#define ccio_allocate_resource(dev, res, size, min, max, align) \
+ allocate_resource(&iomem_resource, res, size, min, max, \
+ align, NULL, NULL)
+#endif /* !CONFIG_IOMMU_CCIO */
+
+void *sba_get_iommu(struct parisc_device *dev);
+
+#endif /* _IOMMU_H */
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index d376201bc6a0..dcea15588833 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -49,6 +49,8 @@
#include <asm/parisc-device.h>
#include <asm/io.h> /* read/write stuff */
+#include "iommu.h"
+
#undef DEBUG_LBA /* general stuff */
#undef DEBUG_LBA_PORT /* debug I/O Port access */
#undef DEBUG_LBA_CFG /* debug Config Space Access (ie PCI Bus walk) */
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 42172eb32235..afaf8e6aefe6 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -49,6 +49,8 @@
#include <asm/pdcpat.h> /* for is_pdc_pat() */
#include <asm/parisc-device.h>
+#include "iommu.h"
+
#define MODULE_NAME "SBA"
/*