diff options
Diffstat (limited to 'drivers/dma/ioatdma.h')
| -rw-r--r-- | drivers/dma/ioatdma.h | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h index bf4dad70e0f5..2a319e124ece 100644 --- a/drivers/dma/ioatdma.h +++ b/drivers/dma/ioatdma.h @@ -28,25 +28,35 @@ #include <linux/cache.h> #include <linux/pci_ids.h> +enum ioat_interrupt { + none = 0, + msix_multi_vector = 1, + msix_single_vector = 2, + msi = 3, + intx = 4, +}; + #define IOAT_LOW_COMPLETION_MASK 0xffffffc0 /** - * struct ioat_device - internal representation of a IOAT device + * struct ioatdma_device - internal representation of a IOAT device * @pdev: PCI-Express device * @reg_base: MMIO register space base address * @dma_pool: for allocating DMA descriptors * @common: embedded struct dma_device - * @msi: Message Signaled Interrupt number + * @version: version of ioatdma device */ -struct ioat_device { +struct ioatdma_device { struct pci_dev *pdev; void __iomem *reg_base; struct pci_pool *dma_pool; struct pci_pool *completion_pool; - struct dma_device common; - u8 msi; + u8 version; + enum ioat_interrupt irq_mode; + struct msix_entry msix_entries[4]; + struct ioat_dma_chan *idx[4]; }; /** @@ -84,7 +94,7 @@ struct ioat_dma_chan { int pending; - struct ioat_device *device; + struct ioatdma_device *device; struct dma_chan common; dma_addr_t completion_addr; @@ -95,6 +105,7 @@ struct ioat_dma_chan { u32 high; }; } *completion_virt; + struct tasklet_struct cleanup_task; }; /* wrapper around hardware descriptor format + additional software fields */ @@ -117,4 +128,16 @@ struct ioat_desc_sw { struct dma_async_tx_descriptor async_tx; }; +#if defined(CONFIG_INTEL_IOATDMA) || defined(CONFIG_INTEL_IOATDMA_MODULE) +struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev, + void __iomem *iobase); +void ioat_dma_remove(struct ioatdma_device *device); +struct dca_provider *ioat_dca_init(struct pci_dev *pdev, + void __iomem *iobase); +#else +#define ioat_dma_probe(pdev, iobase) NULL +#define ioat_dma_remove(device) do { } while (0) +#define ioat_dca_init(pdev, iobase) NULL +#endif + #endif /* IOATDMA_H */ |