diff options
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/ssb/main.c | 75 |
2 files changed, 60 insertions, 17 deletions
diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig index cd845b8acd1..307b1f62d94 100644 --- a/drivers/ssb/Kconfig +++ b/drivers/ssb/Kconfig @@ -2,7 +2,7 @@ menu "Sonics Silicon Backplane" config SSB_POSSIBLE bool - depends on HAS_IOMEM + depends on HAS_IOMEM && HAS_DMA default y config SSB diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index d184f2aea78..d831a2beff3 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -462,18 +462,15 @@ static int ssb_devices_register(struct ssb_bus *bus) #ifdef CONFIG_SSB_PCIHOST sdev->irq = bus->host_pci->irq; dev->parent = &bus->host_pci->dev; - sdev->dma_dev = &bus->host_pci->dev; #endif break; case SSB_BUSTYPE_PCMCIA: #ifdef CONFIG_SSB_PCMCIAHOST sdev->irq = bus->host_pcmcia->irq.AssignedIRQ; dev->parent = &bus->host_pcmcia->dev; - sdev->dma_dev = &bus->host_pcmcia->dev; #endif break; case SSB_BUSTYPE_SSB: - sdev->dma_dev = dev; break; } @@ -1156,36 +1153,82 @@ u32 ssb_dma_translation(struct ssb_device *dev) { switch (dev->bus->bustype) { case SSB_BUSTYPE_SSB: - case SSB_BUSTYPE_PCMCIA: return 0; case SSB_BUSTYPE_PCI: return SSB_PCI_DMA; + default: + __ssb_dma_not_implemented(dev); } return 0; } EXPORT_SYMBOL(ssb_dma_translation); -int ssb_dma_set_mask(struct ssb_device *ssb_dev, u64 mask) +int ssb_dma_set_mask(struct ssb_device *dev, u64 mask) { - struct device *dma_dev = ssb_dev->dma_dev; - int err = 0; + int err; -#ifdef CONFIG_SSB_PCIHOST - if (ssb_dev->bus->bustype == SSB_BUSTYPE_PCI) { - err = pci_set_dma_mask(ssb_dev->bus->host_pci, mask); + switch (dev->bus->bustype) { + case SSB_BUSTYPE_PCI: + err = pci_set_dma_mask(dev->bus->host_pci, mask); if (err) return err; - err = pci_set_consistent_dma_mask(ssb_dev->bus->host_pci, mask); + err = pci_set_consistent_dma_mask(dev->bus->host_pci, mask); return err; + case SSB_BUSTYPE_SSB: + return dma_set_mask(dev->dev, mask); + default: + __ssb_dma_not_implemented(dev); } -#endif - dma_dev->coherent_dma_mask = mask; - dma_dev->dma_mask = &dma_dev->coherent_dma_mask; - - return err; + 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: + 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); + 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: + 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; + 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; |