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powerpc/dma: use the generic direct mapping bypass

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Now that we've switched all the powerpc nommu and swiotlb methods to
use the generic dma_direct_* calls we can remove these ops vectors
entirely and rely on the common direct mapping bypass that avoids
indirect function calls entirely.  This also allows to remove a whole
lot of boilerplate code related to setting up these operations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christoph Hellwig
2019-02-13 08:01:30 +01:00
committed by Michael Ellerman
parent 461db2bdbf
commit 68005b67d1
25 changed files with 16 additions and 222 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/platforms/44x/warp.c
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@@ -47,7 +47,7 @@ static int __init warp_probe(void)
if (!of_machine_is_compatible("pika,warp"))
return 0;
/* For __dma_nommu_alloc_coherent */
/* For arch_dma_alloc */
ISA_DMA_THRESHOLD = ~0L;
return 1;

4
arch/powerpc/platforms/85xx/corenet_generic.c
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@@ -223,7 +223,3 @@ define_machine(corenet_generic) {
};
machine_arch_initcall(corenet_generic, corenet_gen_publish_devices);
#ifdef CONFIG_SWIOTLB
machine_arch_initcall(corenet_generic, swiotlb_setup_bus_notifier);
#endif

2
arch/powerpc/platforms/85xx/ge_imp3a.c
View File

@@ -202,8 +202,6 @@ static int __init ge_imp3a_probe(void)
machine_arch_initcall(ge_imp3a, mpc85xx_common_publish_devices);
machine_arch_initcall(ge_imp3a, swiotlb_setup_bus_notifier);
define_machine(ge_imp3a) {
.name = "GE_IMP3A",
.probe = ge_imp3a_probe,

2
arch/powerpc/platforms/85xx/mpc8536_ds.c
View File

@@ -57,8 +57,6 @@ static void __init mpc8536_ds_setup_arch(void)
machine_arch_initcall(mpc8536_ds, mpc85xx_common_publish_devices);
machine_arch_initcall(mpc8536_ds, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened
*/

4
arch/powerpc/platforms/85xx/mpc85xx_ds.c
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@@ -174,10 +174,6 @@ machine_arch_initcall(mpc8544_ds, mpc85xx_common_publish_devices);
machine_arch_initcall(mpc8572_ds, mpc85xx_common_publish_devices);
machine_arch_initcall(p2020_ds, mpc85xx_common_publish_devices);
machine_arch_initcall(mpc8544_ds, swiotlb_setup_bus_notifier);
machine_arch_initcall(mpc8572_ds, swiotlb_setup_bus_notifier);
machine_arch_initcall(p2020_ds, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened
*/

4
arch/powerpc/platforms/85xx/mpc85xx_mds.c
View File

@@ -367,10 +367,6 @@ machine_arch_initcall(mpc8568_mds, mpc85xx_publish_devices);
machine_arch_initcall(mpc8569_mds, mpc85xx_publish_devices);
machine_arch_initcall(p1021_mds, mpc85xx_common_publish_devices);
machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier);
machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier);
machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier);
static void __init mpc85xx_mds_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |

1
arch/powerpc/platforms/85xx/p1010rdb.c
View File

@@ -55,7 +55,6 @@ static void __init p1010_rdb_setup_arch(void)
}
machine_arch_initcall(p1010_rdb, mpc85xx_common_publish_devices);
machine_arch_initcall(p1010_rdb, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened

2
arch/powerpc/platforms/85xx/p1022_ds.c
View File

@@ -548,8 +548,6 @@ static void __init p1022_ds_setup_arch(void)
machine_arch_initcall(p1022_ds, mpc85xx_common_publish_devices);
machine_arch_initcall(p1022_ds, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened
*/

2
arch/powerpc/platforms/85xx/p1022_rdk.c
View File

@@ -128,8 +128,6 @@ static void __init p1022_rdk_setup_arch(void)
machine_arch_initcall(p1022_rdk, mpc85xx_common_publish_devices);
machine_arch_initcall(p1022_rdk, swiotlb_setup_bus_notifier);
/*
* Called very early, device-tree isn't unflattened
*/

1
arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
View File

@@ -121,7 +121,6 @@ static int __init declare_of_platform_devices(void)
return 0;
}
machine_arch_initcall(mpc86xx_hpcn, declare_of_platform_devices);
machine_arch_initcall(mpc86xx_hpcn, swiotlb_setup_bus_notifier);
define_machine(mpc86xx_hpcn) {
.name = "MPC86xx HPCN",

3
arch/powerpc/platforms/cell/iommu.c
View File

@@ -600,8 +600,6 @@ static int cell_of_bus_notify(struct notifier_block *nb, unsigned long action,
if (cell_iommu_enabled)
dev->dma_ops = &dma_iommu_ops;
else
dev->dma_ops = &dma_nommu_ops;
cell_dma_dev_setup(dev);
return 0;
}
@@ -727,7 +725,6 @@ static int __init cell_iommu_init_disabled(void)
unsigned long base = 0, size;
/* When no iommu is present, we use direct DMA ops */
set_pci_dma_ops(&dma_nommu_ops);
/* First make sure all IOC translation is turned off */
cell_disable_iommus();

2
arch/powerpc/platforms/pasemi/iommu.c
View File

@@ -186,7 +186,7 @@ static void pci_dma_dev_setup_pasemi(struct pci_dev *dev)
*/
if (dev->vendor == 0x1959 && dev->device == 0xa007 &&
!firmware_has_feature(FW_FEATURE_LPAR)) {
dev->dev.dma_ops = &dma_nommu_ops;
dev->dev.dma_ops = NULL;
/*
* Set the coherent DMA mask to prevent the iommu
* being used unnecessarily

51
arch/powerpc/platforms/pasemi/setup.c
View File

@@ -411,55 +411,6 @@ out:
return !!(srr1 & 0x2);
}
#ifdef CONFIG_PCMCIA
static int pcmcia_notify(struct notifier_block *nb, unsigned long action,
void *data)
{
struct device *dev = data;
struct device *parent;
struct pcmcia_device *pdev = to_pcmcia_dev(dev);
/* We are only intereted in device addition */
if (action != BUS_NOTIFY_ADD_DEVICE)
return 0;
parent = pdev->socket->dev.parent;
/* We know electra_cf devices will always have of_node set, since
* electra_cf is an of_platform driver.
*/
if (!parent->of_node)
return 0;
if (!of_device_is_compatible(parent->of_node, "electra-cf"))
return 0;
/* We use the direct ops for localbus */
dev->dma_ops = &dma_nommu_ops;
return 0;
}
static struct notifier_block pcmcia_notifier = {
.notifier_call = pcmcia_notify,
};
static inline void pasemi_pcmcia_init(void)
{
extern struct bus_type pcmcia_bus_type;
bus_register_notifier(&pcmcia_bus_type, &pcmcia_notifier);
}
#else
static inline void pasemi_pcmcia_init(void)
{
}
#endif
static const struct of_device_id pasemi_bus_ids[] = {
/* Unfortunately needed for legacy firmwares */
{ .type = "localbus", },
@@ -472,8 +423,6 @@ static const struct of_device_id pasemi_bus_ids[] = {
static int __init pasemi_publish_devices(void)
{
pasemi_pcmcia_init();
/* Publish OF platform devices for SDC and other non-PCI devices */
of_platform_bus_probe(NULL, pasemi_bus_ids, NULL);

2
arch/powerpc/platforms/powernv/npu-dma.c
View File

@@ -220,7 +220,7 @@ static void pnv_npu_dma_set_32(struct pnv_ioda_pe *npe)
* their parent device so drivers shouldn't be doing DMA
* operations directly on these devices.
*/
set_dma_ops(&npe->pdev->dev, NULL);
set_dma_ops(&npe->pdev->dev, &dma_dummy_ops);
}
/*

7
arch/powerpc/platforms/pseries/vio.c
View File

@@ -1699,3 +1699,10 @@ int vio_disable_interrupts(struct vio_dev *dev)
}
EXPORT_SYMBOL(vio_disable_interrupts);
#endif /* CONFIG_PPC_PSERIES */
static int __init vio_init(void)
{
dma_debug_add_bus(&vio_bus_type);
return 0;
}
fs_initcall(vio_init);