diff options
Diffstat (limited to 'drivers/dma/ioatdma.h')
| -rw-r--r-- | drivers/dma/ioatdma.h | 69 |
1 files changed, 43 insertions, 26 deletions
diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h index bf4dad70e0f..b668234ef65 100644 --- a/drivers/dma/ioatdma.h +++ b/drivers/dma/ioatdma.h @@ -1,5 +1,5 @@ /* - * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved. + * Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free @@ -28,46 +28,47 @@ #include <linux/cache.h> #include <linux/pci_ids.h> +#define IOAT_DMA_VERSION "2.04" + +enum ioat_interrupt { + none = 0, + msix_multi_vector = 1, + msix_single_vector = 2, + msi = 3, + intx = 4, +}; + #define IOAT_LOW_COMPLETION_MASK 0xffffffc0 +#define IOAT_DMA_DCA_ANY_CPU ~0 + /** - * 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 + * @irq_mode: which style irq to use + * @msix_entries: irq handlers + * @idx: per channel data */ -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]; }; /** * struct ioat_dma_chan - internal representation of a DMA channel - * @device: - * @reg_base: - * @sw_in_use: - * @completion: - * @completion_low: - * @completion_high: - * @completed_cookie: last cookie seen completed on cleanup - * @cookie: value of last cookie given to client - * @last_completion: - * @xfercap: - * @desc_lock: - * @free_desc: - * @used_desc: - * @resource: - * @device_node: */ - struct ioat_dma_chan { void __iomem *reg_base; @@ -83,8 +84,10 @@ struct ioat_dma_chan { struct list_head used_desc; int pending; + int dmacount; + int desccount; - struct ioat_device *device; + struct ioatdma_device *device; struct dma_chan common; dma_addr_t completion_addr; @@ -95,6 +98,7 @@ struct ioat_dma_chan { u32 high; }; } *completion_virt; + struct tasklet_struct cleanup_task; }; /* wrapper around hardware descriptor format + additional software fields */ @@ -111,10 +115,23 @@ struct ioat_desc_sw { struct ioat_dma_descriptor *hw; struct list_head node; int tx_cnt; - DECLARE_PCI_UNMAP_LEN(len) - DECLARE_PCI_UNMAP_ADDR(src) - DECLARE_PCI_UNMAP_ADDR(dst) + size_t len; + dma_addr_t src; + dma_addr_t dst; 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); +struct dca_provider *ioat2_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 +#define ioat2_dca_init(pdev, iobase) NULL +#endif + #endif /* IOATDMA_H */ |