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ssb: remove the ssb DMA API
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Now they are unnecessary.  We can use the generic DMA API with any bus.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Gary Zambrano <zambrano@broadcom.com>
Cc: Stefano Brivio <stefano.brivio@polimi.it>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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FUJITA Tomonori authored and John W. Linville committed Jun 4, 2010
1 parent 39a6f4b commit 467429b
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Showing 2 changed files with 0 additions and 231 deletions.
74 changes: 0 additions & 74 deletions drivers/ssb/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1228,80 +1228,6 @@ u32 ssb_dma_translation(struct ssb_device *dev)
}
EXPORT_SYMBOL(ssb_dma_translation);

int ssb_dma_set_mask(struct ssb_device *dev, u64 mask)
{
#ifdef CONFIG_SSB_PCIHOST
int err;
#endif

switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
err = pci_set_dma_mask(dev->bus->host_pci, mask);
if (err)
return err;
err = pci_set_consistent_dma_mask(dev->bus->host_pci, mask);
return err;
#endif
case SSB_BUSTYPE_SSB:
return dma_set_mask(dev->dev, mask);
default:
__ssb_dma_not_implemented(dev);
}
return -ENOSYS;
}
EXPORT_SYMBOL(ssb_dma_set_mask);

void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp_flags)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
if (gfp_flags & GFP_DMA) {
/* Workaround: The PCI API does not support passing
* a GFP flag. */
return dma_alloc_coherent(&dev->bus->host_pci->dev,
size, dma_handle, gfp_flags);
}
return pci_alloc_consistent(dev->bus->host_pci, size, dma_handle);
#endif
case SSB_BUSTYPE_SSB:
return dma_alloc_coherent(dev->dev, size, dma_handle, gfp_flags);
default:
__ssb_dma_not_implemented(dev);
}
return NULL;
}
EXPORT_SYMBOL(ssb_dma_alloc_consistent);

void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
gfp_t gfp_flags)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
if (gfp_flags & GFP_DMA) {
/* Workaround: The PCI API does not support passing
* a GFP flag. */
dma_free_coherent(&dev->bus->host_pci->dev,
size, vaddr, dma_handle);
return;
}
pci_free_consistent(dev->bus->host_pci, size,
vaddr, dma_handle);
return;
#endif
case SSB_BUSTYPE_SSB:
dma_free_coherent(dev->dev, size, vaddr, dma_handle);
return;
default:
__ssb_dma_not_implemented(dev);
}
}
EXPORT_SYMBOL(ssb_dma_free_consistent);

int ssb_bus_may_powerdown(struct ssb_bus *bus)
{
struct ssb_chipcommon *cc;
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157 changes: 0 additions & 157 deletions include/linux/ssb/ssb.h
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Original file line number Diff line number Diff line change
Expand Up @@ -470,14 +470,6 @@ extern u32 ssb_dma_translation(struct ssb_device *dev);
#define SSB_DMA_TRANSLATION_MASK 0xC0000000
#define SSB_DMA_TRANSLATION_SHIFT 30

extern int ssb_dma_set_mask(struct ssb_device *dev, u64 mask);

extern void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp_flags);
extern void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
gfp_t gfp_flags);

static inline void __cold __ssb_dma_not_implemented(struct ssb_device *dev)
{
#ifdef CONFIG_SSB_DEBUG
Expand All @@ -486,155 +478,6 @@ static inline void __cold __ssb_dma_not_implemented(struct ssb_device *dev)
#endif /* DEBUG */
}

static inline int ssb_dma_mapping_error(struct ssb_device *dev, dma_addr_t addr)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
return pci_dma_mapping_error(dev->bus->host_pci, addr);
#endif
break;
case SSB_BUSTYPE_SSB:
return dma_mapping_error(dev->dev, addr);
default:
break;
}
__ssb_dma_not_implemented(dev);
return -ENOSYS;
}

static inline dma_addr_t ssb_dma_map_single(struct ssb_device *dev, void *p,
size_t size, enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
return pci_map_single(dev->bus->host_pci, p, size, dir);
#endif
break;
case SSB_BUSTYPE_SSB:
return dma_map_single(dev->dev, p, size, dir);
default:
break;
}
__ssb_dma_not_implemented(dev);
return 0;
}

static inline void ssb_dma_unmap_single(struct ssb_device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
pci_unmap_single(dev->bus->host_pci, dma_addr, size, dir);
return;
#endif
break;
case SSB_BUSTYPE_SSB:
dma_unmap_single(dev->dev, dma_addr, size, dir);
return;
default:
break;
}
__ssb_dma_not_implemented(dev);
}

static inline void ssb_dma_sync_single_for_cpu(struct ssb_device *dev,
dma_addr_t dma_addr,
size_t size,
enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
size, dir);
return;
#endif
break;
case SSB_BUSTYPE_SSB:
dma_sync_single_for_cpu(dev->dev, dma_addr, size, dir);
return;
default:
break;
}
__ssb_dma_not_implemented(dev);
}

static inline void ssb_dma_sync_single_for_device(struct ssb_device *dev,
dma_addr_t dma_addr,
size_t size,
enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
size, dir);
return;
#endif
break;
case SSB_BUSTYPE_SSB:
dma_sync_single_for_device(dev->dev, dma_addr, size, dir);
return;
default:
break;
}
__ssb_dma_not_implemented(dev);
}

static inline void ssb_dma_sync_single_range_for_cpu(struct ssb_device *dev,
dma_addr_t dma_addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
/* Just sync everything. That's all the PCI API can do. */
pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
offset + size, dir);
return;
#endif
break;
case SSB_BUSTYPE_SSB:
dma_sync_single_range_for_cpu(dev->dev, dma_addr, offset,
size, dir);
return;
default:
break;
}
__ssb_dma_not_implemented(dev);
}

static inline void ssb_dma_sync_single_range_for_device(struct ssb_device *dev,
dma_addr_t dma_addr,
unsigned long offset,
size_t size,
enum dma_data_direction dir)
{
switch (dev->bus->bustype) {
case SSB_BUSTYPE_PCI:
#ifdef CONFIG_SSB_PCIHOST
/* Just sync everything. That's all the PCI API can do. */
pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
offset + size, dir);
return;
#endif
break;
case SSB_BUSTYPE_SSB:
dma_sync_single_range_for_device(dev->dev, dma_addr, offset,
size, dir);
return;
default:
break;
}
__ssb_dma_not_implemented(dev);
}


#ifdef CONFIG_SSB_PCIHOST
/* PCI-host wrapper driver */
extern int ssb_pcihost_register(struct pci_driver *driver);
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